CN103173942B - Sewing machines - Google Patents

Sewing machines Download PDF

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Publication number
CN103173942B
CN103173942B CN201210574935.1A CN201210574935A CN103173942B CN 103173942 B CN103173942 B CN 103173942B CN 201210574935 A CN201210574935 A CN 201210574935A CN 103173942 B CN103173942 B CN 103173942B
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still
turntable
needle bar
gear
motor
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CN103173942A (en
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月冈高志
公文哲
柳泽理人
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Juki Corp
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Juki Corp
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Abstract

The invention provides a kind of Sewing machines, it realizes the high speed of miniaturization around still and action.Sewing machines has: needle bar; Still; Sewing machine electromotor; Still drive motor; Needle bar rotating mechanism; Still turntable; Pin rotating motor, it makes needle bar rotate; Still rotating motor, it makes still turntable rotate; And differential transmission mechanism, it has the power shaft and output shaft that transmit still rotatory force.Differential transmission mechanism has: carriage, and it rotates around the power shaft be configured on center line and output shaft; Carrier, it is supported on carriage, transmits revolving force each other between power shaft and output shaft; Slave unit, it is arranged on in still turntable or carriage, is rotated by still rotating motor; And rotation link gear, it utilizes the rotatory force from slave unit, still turntable and carriage is rotated to equidirectional, and still turntable is rotated with the amount of spin of two of carriage times.

Description

Sewing machines
Technical field
The present invention relates to a kind of Sewing machines carrying out the rotational action of container mechanism entirety.
Background technology
Current, known a kind of Sewing machines, it is forming stitching while any direction conveying sewn object on X-Y direction.When there is the single needle sewing machine of a suture needle as this Sewing machines use, exist along with its throughput direction, namely make direction and make to reach the standard grade and become helical form and form the situation of stitching, namely, exist and produce the so-called situation adding coiling mark, in order to prevent this phenomenon, and form so-called desirable stitching, and setting makes needle bar and container mechanism centered by the axis of needle bar, rotate the mechanism of (rotation).Such as, when carrying sewn object for each pin along any direction on X-Y direction, easily produce add coiling mark make direction is made time, must be set as, rotate (rotation) around above-mentioned axis by making suture needle and still, thus the seizure direction that the reach the standard grade wire loop of the tip of still to suture needle front end is caught, become the direction preventing from adding the generation of coiling mark.
In addition, when use has the two-needle sewing machine of 2 suture needles, except preventing above-mentioned adding except coiling mark, when utilize X-Y feed mechanism to make arbitrarily direction conveying sewn object, carry out the needle bar rotational action for making the orientation of 2 pins orthogonal with making direction, thus no matter relative to which direction, all the interval of stitching can be maintained regularly, but must accompany with the rotational action of above-mentioned 2 needle bars, 2 stills are rotated in the same manner, carries out compulsory exercise to make the tip of still relative to the through wires hole of suture needle.
In addition, as the Sewing machines making needle bar and still rotate (rotation), such as, shown in the record of patent document 1, propose a kind of Sewing machines, it has: needle bar pedestal, and it can keep 2 needle bars up or down, and can be supported on sewing machine stand around vertical axes; And still pedestal, it can support 2 stills around vertical axes, this Sewing machines by controlling, with relative to the cloth carried to any direction by cloth holding frame, make the direction that the orientation of 2 pins becomes orthogonal all the time with making direction, thus form 2 stitchings along predetermined shape.
In the Sewing machines described in above-mentioned patent document 1, have: container mechanism, it has 2 stills in the downside of needle plate; And still rotating mechanism, it makes the still pedestal of container mechanism rotate centered by the axis identical with suture needle, and the rotational synchronization ground of this Sewing machines and 2 needle bars carries out the rotation of container mechanism.
In addition, in this conventional example, two-needle sewing machine is illustrated, but by removing a suture needle and still respectively, thus easily can realize the single needle sewing machine carrying out still rotation.
Patent document 1: Chinese patent application discloses No. 101845718 description
In the Sewing machines of above-mentioned patent document 1, if from carry out spinning movement still pedestal externally to the still transmitting rotary power be mounted in still pedestal, then by the rotation of still pedestal, make the phase offset that the rotation generation of still is corresponding with rotational angle, therefore, by carrying the motor that still rotates on still pedestal, thus accommodating transmission system on still pedestal, preventing the generation of phase offset.But if adopt above-mentioned structure, then the weight of still pedestal entirety increases, and the rotary driving source as still needs the large-scale and motor of high output, and, require the intensity to the structure that still pedestal supports, Sewing machines is maximized, re-quantization greatly.In addition, because the weight of still pedestal increases, so be difficult to make still carry out High Rotation Speed, produce the problem cannot carrying out high-speed sewing.
In addition, in the Sewing machines of above-mentioned patent document 1, the motor that still is rotated departs from from the rotary centerline of still pedestal and is mounted in outer edge, and therefore, the moment of inertia of still pedestal becomes large, and this becomes the reason of the high speed motion hindering still to rotate further.
In addition, the still pedestal carrying out rotating carries still turning motor, the collecting ring as self-cleaning contact is needed in order to carry out power supply supply to motor, but the collecting ring being applicable to still turning motor is mostly large component, owing to carrying this collecting ring, and produce following problems, that is, make the weight of still pedestal become large, maximize and make to make low speed further.
Summary of the invention
The object of the invention is to, high speed and the high precision int of still spinning movement can be realized, and realize miniaturization.
The present invention is a kind of Sewing machines, and it has:
Needle bar, it keeps suture needle, can be arranged on up or down on Sewing machines arm;
Sewing machine electromotor (21), it makes described needle bar move up and down;
Needle bar rotating mechanism, it utilizes the action of pin rotating motor, and described needle bar is rotated around the center line parallel with described needle bar;
Still (801), it keeps rolling off the production line, and catches reaching the standard grade from suture needle by spinning movement, makes to reach the standard grade to be wound around with rolling off the production line;
Still turntable (130), it carries described still, is supported on sewing machine stand, can rotate around described center line;
Still drive motor (401), it makes described still rotate;
Still turning motor (402), it makes described still turntable rotate; And
Differential transmission mechanism (400), it has the power shaft (411) linked with described still drive motor and the output shaft (412) linked with described still, and described power shaft and described output shaft are all configured on described center line,
The feature of this Sewing machines is,
Described differential transmission mechanism has:
Differential attachment portion (430), it has the carriage (431) being rotatably supported on the surrounding of described power shaft and output shaft relative to described still turntable and the carrier (434) be rotatably supported on described carriage, by the rotation of carrier, thus by the rotation of described power shaft to output shaft transmission;
Slave unit (422), it is arranged on in described still turntable or described carriage, from described still turning motor input rotatory force; And
Rotate link gear (440), it utilizes the rotatory force inputted from described slave unit, and described still turntable and described carriage are rotated to equidirectional, and, described still turntable is rotated with the amount of spin of two of described carriage times.
In addition, " still " mentioned here can be all-round rotating kettle or half cycle rotating kettle.
In said structure, described rotation link gear also can be made to have gear mechanism, this gear mechanism has the gear on that is separately positioned in described still turntable and described carriage and on described sewing machine stand.
In addition, also can be configured to, described rotation link gear has: fixed gear, and it is fixed on described sewing machine stand; Driven gear, it is fixed on described carriage; Back shaft, it is supported on described still turntable rotationally; 1st gear, it is fixed on described back shaft, engages with described fixed gear; And the 2nd gear, it is fixed on described back shaft, engages with described driven gear.
In addition, also can be configured to, utilize the structure that described sewing machine electromotor is linked via Poewr transmission mechanism and described power shaft, or making described still drive motor via Poewr transmission mechanism and the structure for driving the upper axle of described needle bar to link, making described sewing machine electromotor and described still drive motor share 1 motor.
In addition, also can be configured to, utilize the structure that described still turning motor is linked via Poewr transmission mechanism and described needle bar rotating mechanism, or the structure making described pin rotating motor (32) link via Poewr transmission mechanism and described still turntable, makes described pin rotating motor and described still turning motor share 1 motor.
In addition, also can be configured to, described Sewing machines is single needle sewing machine, has: travel mechanism, and it can make sewn object move along any direction in the plane orthogonal with described center line; And make control unit, it is before utilizing described travel mechanism to make sewn object move, when the moving direction of this sewn object is included in predetermined adding in the generation scope of coiling mark, in the mode making described moving direction depart from this scope, described pin rotating motor and described still turning motor are driven.
In addition, also can be configured to, described Sewing machines is two-needle sewing machine, has: still rotary transfer machine, and it is mounted on described still turntable, rotates from described output shaft to 2 still transmission; Travel mechanism, it can make sewn object in the plane orthogonal with the described center line be positioned in the middle of 2 suture needles, moves along any direction; And make control unit, it is when utilizing described travel mechanism to make sewn object move, described pin rotating motor and described still turning motor are controlled, arranges along the direction orthogonal with the moving direction of described sewn object in the plane orthogonal with described center line respectively to make described 2 suture needles and described 2 stills.
The effect of invention
Foregoing invention can apply spinning movement by power shaft and output shaft to still, change still towards time, utilize still turning motor that still turntable is rotated.
Now, differential transmission mechanism makes carriage to the direction identical with still turntable, rotates with the angle of rotation tolerance of 1/2nd.Its result, the carrier of differential transmission mechanism to the phase difference of amount of spin two times applying carriage between power shaft and output shaft, can eliminate the phase difference produced due to the rotational action of still.
That is, still drive motor be not equipped on still turntable, from still turntable externally to still apply spinning movement, the generation of phase difference when still being rotated by the rotation of still turntable can be avoided.
Thus, do not need still drive motor to be mounted on still turntable, therefore, the lightweight of still turntable can be realized, can use and export little miniature motor as still turning motor, and, also can make the miniaturizations such as the support structure of still turntable.
In addition, the moment of inertia of still turntable can be reduced, the error of the rotational action of still can be reduced, accurate action control and still rotational action at a high speed can be realized.
In addition, due to still drive motor need not be carried on still turntable, so there is no need for carrying out the particular component such as the collecting ring of power supply supply to this still drive motor, the reduction of Sewing machines manufacturing cost and the miniaturization of Sewing machines can be realized.
In addition, still turning motor applies rotational action by slave unit to any one in still turntable or carriage, at still turntable and carriage each other, rotation link gear is utilized to rotate to equidirectional with the ratio transmission of 2:1, further, still turntable and carriage are configured to carry out rotational action on the same axis.
On the other hand, as a comparison case, when comparing with the structure using Timing Belt to apply rotational action with above-mentioned ratio from still turning motor to still turntable respectively with carriage, may on the Timing Belt rotated to the transmission of still turntable and the Timing Belt rotated to carriage transmission, produce with different amounts respectively and extend, therefore, in said structure, when carrying out the rotational action of still, easily produce the problem cannot carrying out phase offset correction accurately.
On the other hand, in the present invention, owing to applying rotational action to any one in still turntable or carriage, link via rotation link gear each other at still turntable and carriage, so compared with using the situation of above-mentioned Timing Belt, phase offset correction when still rotates can be carried out accurately.Therefore, the generation of bouncing pilotage etc. can be reduced when still rotates, can making of high quality of sewing be carried out.
When using the structure of gear mechanism as rotary transfer machine, can more precisely to as used Timing Belt to apply the situation of rotational action respectively to still turntable and carriage, the phase offset caused by the difference of the stroke of each Timing Belt corrects.
When being configured to make sewing machine electromotor and drive motor share 1 motor, the number of motor can be reduced, realizing the productive raising of Sewing machines.
In addition, do not need the Synchronization Control of each motor, the structure of control circuit etc. can be made simpler.
In addition, even if when making sewing machine electromotor and still drive motor shares 1 motor, owing to having rotation link gear, so such as in the halted state of Sewing machines, maintenance etc. time, when the still turntable of still is rotated, do not move up and down to needle bar transmission, the contact etc. between suture needle and other objects can be prevented.
When being configured to make pin rotating motor and still turning motor share 1 motor, the number of motor can being reduced, realize the productive raising of Sewing machines.
In addition, the Synchronization Control of each motor can be implemented, make the structure of control circuit etc. simpler.
Have in single needle sewing machine and make control unit, it is utilizing travel mechanism to make before sewn object moves, when the moving direction of this sewn object is included in predetermined adding in the generation scope of coiling mark, in the mode making moving direction depart from this scope, rotating motor is driven, therefore, in the making of the pin that carries out to optional position falling, the generation adding coiling mark can be prevented.
In two-needle sewing machine, when utilizing travel mechanism to make sewn object move, may be controlled to make 2 suture needles and 2 stills to arrange along the direction orthogonal with the moving direction of sewn object respectively, can be parallel and maintain certain interval and form 2 stitchings.
Accompanying drawing explanation
Fig. 1 is the oblique view of the Sewing machines of the first embodiment.
Fig. 2 is the structure chart of the mechanism construction roughly illustrating Sewing machines.
Fig. 3 is the oblique view of container mechanism and differential transmission mechanism.
Fig. 4 is the center line along needle bar of container mechanism and differential transmission mechanism and the profile of Y-Z plane.
Fig. 5 is rotation by still turntable and carriage and state description figure still being rotated by still transfer part, and Fig. 5 (A) represents the state before the rotation of still turntable and carriage, and Fig. 5 (B) represents the state after the rotation of still turntable and carriage.
Fig. 6 is the top view of container mechanism.
Fig. 7 is the oblique view of the turned parts mechanism mainly representing container mechanism.
Fig. 8 is the oblique view of the cutter mechanism mainly representing container mechanism.
Fig. 9 (A) is the profile of the horizontal direction of oil supply mechanism, and Fig. 9 (B) is the profile of the vertical direction of oil supply mechanism.
Figure 10 is the block diagram of the control system system representing Sewing machines.
Figure 11 represents on an x-y plane, produces the key diagram making direction adding coiling mark when using the center line from needle bar towards the direction of still as benchmark.
Figure 12 adds the flow chart that coiling mark avoids control.
Figure 13 is the oblique view of the differential transmission mechanism of the second embodiment.
Figure 14 is the center line along needle bar of the differential transmission mechanism of the second embodiment and the profile of Y-Z plane.
Figure 15 is the oblique view of the structure in the Sewing machines arm of the Sewing machines representing the 3rd embodiment.
Figure 16 is the side view of the peripheral structure of the needle bar representing the 3rd embodiment.
Figure 17 is the profile of the peripheral construction of the needle bar utilizing the section along the center of the needle bar of the 3rd embodiment to represent.
Figure 18 is the position switching mechanism of the 3rd embodiment and the oblique view of action component.
The key diagram of the change in location of the minor sprocket of the differential transmission mechanism in needle bar side when Figure 19 (A) is the rotational action representing needle bar turntable, Figure 19 (B) is the key diagram of the change in location representing linkage gear, and Figure 19 (C) is the key diagram of the change in location representing differential component.
Figure 20 represents the differential transmission mechanism of the 3rd embodiment and the oblique view of container mechanism.
Figure 21 is the illustrated oblique view eliminating bracing frame and still pedestal for the differential transmission mechanism of the 3rd embodiment and container mechanism.
Figure 22 is the block diagram of the control system system of the Sewing machines representing the 3rd embodiment.
Figure 23 is the figure of the example representing the tailoring pattern forming TWICE STITCH.
Figure 24 is the flow chart making control of the TWICE STITCH represented for the formation of the tailoring pattern shown in Figure 23.
The explanation of symbol
11 suture needles
12,12B needle bar
20,20B pin reciprocating mechanism
21 sewing machine electromotors
30,30B needle bar rotating mechanism
31,31B needle bar turntable
32,32B pin rotating motor
101 sewing machine stands
102 cloth travel mechanisms (travel mechanism)
102a holding frame
102cX axle motor
102dY axle motor
103 cloth loading plates (needle plate)
105 bracing frames
110,110B control device (making control unit)
130 still turntables
400, the differential transmission mechanism of 400A, 400B
401 still drive motors
402 still turning motors
410,410B rotary power portion
411 driving shafts (power shaft)
412 driven shafts (output shaft)
420,420A spinning movement portion (still rotary transfer machine)
421 drive sprockets
422,422A driven sprocket (slave unit)
430,430A differential attachment portion
431,431A carriage
432 gears
432A spur gear
433 gears
433A spur gear
434,434A carrier
435 gears
435A spur gear
436,436A axle portion
437A spur gear
440,440A rotates linkage portion (rotation link gear)
441 fixed gears
441A planetary gear
442 back shafts
443 gear wheels
443A driven gear (sun gear)
444 pinions
445 driven gears
445A driving gear
800,800A, 800B container mechanism
801 stills
803a fitting portion
803b engages projection
804 still pedestals
806 turned partss
810 torque-transmitting mechanisms (transmission mechanism)
811 still axles
812 driving gears
813 driven gears
820 turned parts mechanisms
821 turned parts driving shafts
830 cutter mechanisms
831 fixed cutting tools
832 cutting knife pedestals
833 movable cutting knifes
836 cutter driving cams (cam)
837a roller
840 oil feed pumps
841 rotary bodies (action body)
844 plungers
C center line
Detailed description of the invention
[the first embodiment]
Based on Fig. 1 ~ Figure 12, the first embodiment of the present invention is described.
The Sewing machines 100 recorded below as present embodiment, it is so-called electronic cycle sewing machine, there is the holding frame as cloth maintaining part, this holding frame keeps the made cloth as sewn object, by making the relative movement relative to suture needle of this holding frame, thus on the cloth kept in holding frame, form the tailoring pattern of the stitch data based on regulation.
Here, the direction that suture needle 11 described later carries out moving up and down is defined as Z-direction (above-below direction), orthogonal with this direction horizontal direction is defined as X-direction (left and right directions), another horizontal direction orthogonal with X-direction is defined as Y direction (fore-and-aft direction).
As shown in Figures 1 and 2, Sewing machines 100 has sewing machine stand 101, and this sewing machine stand 101 is made up of following part: sewing machine base portion 101b, and it has smooth seating plane (upper surface) in the horizontal direction; Sewing machines arm 101a, it corresponding thereto, extends along Y direction above sewing machine base portion 101b; And longitudinal body portion 101c, Sewing machines arm 101a and sewing machine base portion 101b links by it.
Above-mentioned Sewing machines 100 has: needle bar 12, and it keeps suture needle 11 in bottom, is supported on Sewing machines arm 101a front end, can carries out moving up and down along Z-direction and can rotate around Z axis; Pin reciprocating mechanism 20, it is configured in Sewing machines arm 101a, using sewing machine electromotor 21 as drive source, suture needle is moved up and down; Needle bar rotating mechanism 30, it is configured in Sewing machines arm 101a, and needle bar 12 is rotated around Z axis; And cloth travel mechanism (travel mechanism 102, it keeps cloth (sewn object) on the seating plane of sewing machine base portion 101b, at random moves relative to the moving up and down position of suture needle 11 and positions along X-Y plane.
In addition, Sewing machines 100 has in sewing machine base portion 101: container mechanism 800, and it has the still (horizontal container) 801 forming flat stitch with suture needle 11 co-operating; Differential transmission mechanism 400, it has from the still drive motor 401 as driver element to the driving shaft 411(power shaft of container mechanism 800 transmitting rotary power) and driven shaft 412(output shaft), and change can be carried out to the phase difference between these axles and regulate; And as the control device 110 of action control unit, it carries out action control to above-mentioned each structure.Horizontal container 801 has and carries out by around the Z-axis direction direction the outer still 802 that rotates and be rotatably configured in outer still 802 and accommodate the known construction that in bobbin, still 803 is formed, in interior still 803, being provided with the fitting portion 803a(protruded to radiation direction from outer peripheral edge is protuberance in this example).
[cloth travel mechanism]
As shown in Figure 1, cloth travel mechanism 102 has; Holding frame 102a, it keeps sewn object on the upper surface of sewing machine base portion 101b; Support arm 102b, it liftably supports holding frame 102a; And X-axis motor 102c and Y-axis motor 102d(is with reference to Figure 10), it is configured in the inside of sewing machine base portion 101b, links with support arm 102b, and holding frame 102a is moved along X-direction and Y direction.X-axis motor 102c and Y-axis motor 102d is made up of pulse motor.
Cloth travel mechanism 102 utilizes said structure, sewn object can be made to move to the optional position of X-Y plane and locate via holding frame 102a, when each pin, can carry out falling pin to the optional position on the sewn object in holding frame 102a, freely can form stitching.
[needle bar mechanism]
As shown in Figure 2, needle bar 12 can freely be supported on needle bar turntable 31 described later up or down.
Pin reciprocating mechanism 20 has: upper axle 22, and the output shaft of itself and sewing machine electromotor 21 links, and is supported on above-mentioned Sewing machines arm 101a, can rotates centered by Y direction axis; Needle bar crank 23, it is supported on the other end of axle 22, eccentric relative to pivot; Toggle-action lever 24, the eccentric part of its base end part and needle bar crank 23 links; Needle bar clasps portion 25, and it is fixed on needle bar 12, forms groove 25a in the circumferential direction in periphery; And square link stopper 26, it is supported on the other end of toggle-action lever 24, can rotate centered by Y direction axis.
Upper axle 22 and sewing machine electromotor 21 link and rotate, upper axle 22 be rotated through needle bar crank 23 and toggle-action lever 24 is transformed to upper and lower reciprocating action, clasp portion 25 via square link stopper 26 and needle bar and transmit to needle bar 12.Needle bar is clasped portion 25 and is transmitted from toggle-action lever 24 to needle bar 12 and move up and down.
For needle bar 12, chimeric by making square link stopper 26 and needle bar clasp the above-mentioned groove 25a in portion 25, thus toggle-action lever 24 and needle bar are clasped portion 25 link.
Needle bar rotating mechanism 30 has: needle bar turntable 31, it is configured in the facing side end of Sewing machines arm 101a, as shown in Figure 2, needle bar 12 can be supported up or down, the place of axle portion of lower end thereon, in the mode that can rotate around the center line parallel with sewing machine stand 101, specifically, supported in the mode that can rotate centered by the rotation (center line C) on the extended line being positioned at the axle center of needle bar 12; Pin rotating motor (pulse motor) 32, it is fixed in Sewing machines arm 101a frame, as the source of rotational drive of needle bar 12; And transmission mechanism 33,34,35, it transmits rotatory force from pin rotating motor 32 to needle bar turntable 31.
In addition, on needle bar turntable 31, form guiding groove 36 along Z-direction, insert in this guiding groove 36 and clasp from above-mentioned needle bar the spline parts (not shown) that portion 25 extends along Y direction, thus, needle bar 12 and needle bar turntable 31 rotate integratedly centered by above-mentioned center line C.
Transmission mechanism has: drive sprocket 33, and it is fixed on the output shaft of pin rotating motor 32; Driven sprocket 34, it is concentric and be fixed in the upper shaft portion of needle bar turntable 31 with center line C; And Timing Belt 35, it is hung on above-mentioned sprocket wheel 33,34.Further, by making pin rotating motor 32 carry out driving adjustment, thus needle bar turntable 31 and needle bar 12 can be adjusted to any anglec of rotation around its center line C.Now, rotate together with needle bar 12 even if needle bar clasps portion 25, the square link stopper 26 engaged with groove 25a also can be made to slide and keep linking, while allowing that needle bar 12 rotates, link with toggle-action lever 24 and move up and down.
[still turntable]
In Fig. 2 to Fig. 4, still turntable 130 utilizes its upper and lower, on the supported underneath portion 105A being supported on the bracing frame 105 of the part forming sewing machine stand 101 and upper support portion 105B, can rotate via bearing 134,135 centered by center line C.
Still turntable 130 has the upper surface along X-Y plane, to make to be configured on above-mentioned upper support portion 105B and carry on this upper surface support container mechanism 800 board mounting 131, to be configured between above-mentioned upper support portion 105B and supported underneath portion 105A and the upper frame 132 be arranged on the lower surface of board mounting 131 and the lower frame 133 that is arranged on upper frame 132 bottom are formed integratedly.
[differential transmission mechanism]
Differential transmission mechanism 400 has following function, that is, apply the function of revolving force to the still 801 of container mechanism 800 from still drive motor 401; The function of rotatory force is applied from still turning motor 402 to still turntable 130; And the function corrected is changed to the phase place around still axle 811 produced by rotating of this still 801.
Differential transmission mechanism 400 has: as the rotary power portion 410 of power source, and it is supported on above-mentioned supported underneath portion 105A, and still axle 811 and turned parts driving shaft 821 are rotated; Spinning movement portion 420, it is supported on above-mentioned upper support portion 105B, and still turntable 130 is rotated, and still 801 is rotated around center line C; Differential attachment portion 430, it is supported on upper frame 132, and the change of the phase place around still axle 811 produced making still 801 by rotating corrects; As the rotation linkage portion 440 of rotating link gear, it utilizes the rotatory force inputted from rotary power portion 410, still turntable 130 and carriage described later 431 is rotated to equidirectional, and still turntable 130 is rotated with the amount of spin of two of carriage 431 times.
Rotary power portion 410 has: still drive motor 401, and it is as the rotary driving source of still axle 811 and turned parts driving shaft 821; Driving shaft 411, its input is from the moment of torsion of still drive motor 401; Drive sprocket 413, it is fixed on the output shaft 401A of still drive motor 401; Driven sprocket 414, it is fixed on the bottom of driving shaft 411; Timing Belt 415, it is hung on above-mentioned two sprocket wheels 413,414; Driven shaft 412, it, and to export to container mechanism 800 from driving shaft 411 via differential attachment portion 430 transmitting torque; Outlet side sprocket wheel 416, it is fixed on the upper end of driven shaft 412; And Timing Belt 417, it is hung between this outlet side sprocket wheel 416 and input side sprocket wheel 822 of container mechanism 800.In addition, for drive sprocket 413, show the example be set directly on output shaft 401A, but also can be arranged on and to link with output shaft 401A and to have on the rotating shaft that parallels to the axis with driving shaft 411.
Still drive motor 401 is made up of pulse motor, is fixed on bracing frame 105 with output shaft 401A state downward.
Driving shaft 411 and driven shaft 412 are rotatably supported on the carriage 431 in differential attachment portion 430 described later, and driving shaft 411, driven shaft 412 are all configured on the extended line of center line C.Driving shaft 411 and driven shaft 412 form still rotating shaft.
In addition, driving shaft 411 rotates from still drive motor 401 input torque via drive sprocket 413 and Timing Belt 415.
In addition, the driven shaft 412 rotated in linkage with driving shaft 411 via differential attachment portion 430, via outlet side sprocket wheel 416, input side sprocket wheel 822, Timing Belt 417 directly to turned parts driving shaft 821 output torque, indirectly to still axle 811 output torque.Wherein, outlet side sprocket wheel 416, input side sprocket wheel 822, Timing Belt 417 form the power transfering part (connect mechanism) 450 turned parts driving shaft and still rotating shaft linked.
[container mechanism]
As shown in Fig. 2 ~ Fig. 4, Fig. 6 ~ Fig. 8, the container mechanism 800 with above-mentioned horizontal container 801 is mounted on the upper surface of board mounting 131 of still turntable 130.
This container mechanism 800 has: still pedestal 804, and it is fixed on board mounting 131 upper surface; Still axle 811, it is supported on still pedestal 804, can rotate centered by Z-direction axis; And spline parts 805(Fig. 6), it is arranged on still pedestal 804, forms the gap slightly wider than the width of fitting portion 803a, with can be relative with the mode that fitting portion 803a engages, allows that the trace of interior still 803 rotates.The upper end support level still 801 of still axle 811.Specifically, the outer still 802 of horizontal container 801 is fixed on the upper end of still axle 811.
In addition, container mechanism 800 has: turned parts 806, its with needle bar 12 move up and down the identical cycle, abut with interior still 803, between spline parts 805 and the fitting portion 803a of interior still 803, formed and be used for the gap of extracting reaching the standard grade; Turned parts mechanism 820, it has turned parts driving shaft 821, and this turned parts driving shaft 821 inputs revolving force, periodically abuts action to make turned parts 806; Torque-transmitting mechanisms 810, the moment of torsion from turned parts driving shaft 821 transmits to still axle 811 by it; Cutter mechanism 830, it is mounted on still pedestal 804, cuts off roll off the production line when carrying out action; And the oil feed pump 840 of oil supply mechanism, it is to the internal feed lubricating oil of still pedestal 804.
The speed of two times that outer still 802 and still axle 811 move up and down with pin integratedly rotates, and often rotates the ratio of carrying out for 2 weeks once with the tip be arranged on outer still 802, catches reach the standard grade from suture needle 11.
Outer still 802 is arranged on the periphery of interior still 803, while slidingly contacting with interior still 803, is fixed the continuous all-round rotation in direction around vertical center line.
On the other hand, in order to not make interior still 803 produce rotation together with outer still 802, and have the fitting portion 803a protruded upward on top, interior still 803 periphery, this protuberance 803a is chimeric with the spline parts 805 close to the direction of rotation both sides being arranged on this protuberance 803a.In addition, as fitting portion 803a, be not limited to the protuberance of protrusion as shown in this example, such as, also can adopt concavity, and make spline parts 805 be formed as convex and be fitted together to.
Turned parts mechanism 820 has: turned parts 806, its with needle bar 12 move up and down the identical cycle, abut with interior still 803, formed between spline parts 805 and the protuberance 803a of interior still and be used for the gap of extracting reaching the standard grade; Turned parts driving shaft 821, still pedestal about 804 runs through by it, is rotatably supported under the state parallel with Z-direction; Input side sprocket wheel 822, it is fixedly mounted on the bottom of turned parts driving shaft 821; Eccentric shaft 823, it is in the upper end of turned parts driving shaft 821, is arranged on from the position of the rotation centerline bias of this turned parts driving shaft 821; Toggle-action lever 824, one end and eccentric shaft 823 link; Rotate wrist 825, it keeps turned parts 806, and links with the other end of toggle-action lever 824.
Input side sprocket wheel 822 is as noted above, from the outlet side sprocket wheel 416 of differential transmission mechanism 400 via Timing Belt 417 input torque.This input side sprocket wheel 822 is less with outlet side sprocket wheel 416 phase diameter group, to make input side sprocket wheel 822 carry out the mode rotated with the identical rotary speed that moves up and down of needle bar 12, will rotate speedup and input torque.
In addition, near input side sprocket wheel 822, be provided with not shown jockey pulley simultaneously.Still pedestal 804 is fixed by carrying out screw via elongated hole, thus is fixedly mounted on the upper surface of board mounting 131 of still turntable 130, by unclamping screw, thus can carry out position adjustments, carrying out the position adjustments of still 801.By the position adjustments of this still 801, thus make jockey pulley press Timing Belt 417 constantly, apply tension force to Timing Belt, do not relax to make the Timing Belt 417 be hung between input side sprocket wheel 822 and outlet side sprocket wheel 416.
Rotate wrist 825 is supported on still pedestal 804 top in the mode can rotated around Z axis, an end of this rotation wrist 825 and the other end of toggle-action lever 824 link.Toggle-action lever 824 is as noted above, and one end and eccentric shaft 823 link, and are applied in rotary motion, therefore, in its other end, rotation wrist 825 can be made to rotate with the cycle identical with the rotation of turned parts driving shaft 821.
Therefore, being fixedly mounted on the turned parts 806 of rotating on wrist 825 also makes its leading section carry out reciprocating rotation together with rotation wrist 825.Turned parts 806 is by its rotational action, and contact with the protruding 803b of the locking extended outside its radial direction from the top, periphery of interior still 803, can when still 802 rotates outside, the fitting portion 803a of interior still 803 be separated with the position of spline parts 805 close contact, thus make to reach the standard grade and pass through.
Torque-transmitting mechanisms 810 has: as the still axle 811 of still rotating shaft, it fixedly mounts the bottom center of still 802 outside; Driving gear 812, it is fixedly mounted on the centre of turned parts driving shaft 821; And driven gear 813, be fixedly mounted on still axle 811.
The number of teeth ratio of driving gear 812 and driven gear 813 is 2:1.That is, torque-transmitting mechanisms 810 is by the rotary speed speedup to two times of turned parts driving shaft 821, the rotation of turned parts driving shaft 821 is transmitted to still axle 811.That is, the outer still 802 of still 801 and the number of times moved up and down of suture needle corresponding, rotate with the speed of two times.
In addition, in this torque-transmitting mechanisms 810, have employed gear mechanism, but also can use the transmission mechanism that can carry out other kinds of moment of torsion transmission, such as belt mechanism.In the case, still drive motor 401 is preferably made to drive in the mode reversely rotated, or the moment of torsion transmission replacing Timing Belt 417 and use gear mechanism to carry out between outlet side sprocket wheel 416 and input side sprocket wheel 822.
Spinning movement portion 420 has: still turning motor 402, and it has the output shaft parallel with above-mentioned driven shaft 412, becomes the rotary driving source of still 801; Drive sprocket 421, it is fixed on the output shaft of above-mentioned still turning motor 402; As the driven sprocket 422 of slave unit, it is fixedly mounted on still turntable 130; And Timing Belt 423, it is hung on above-mentioned sprocket wheel 421,422.Still turning motor 402 is made up of pulse motor, is fixedly supported on upper support portion 105B.
Utilize said structure, from still turning motor 402 via each sprocket wheel 421,422 and Timing Belt 423 to still turntable 130 input torque, at the upper surface of the board mounting 131 of still turntable 130, to being arranged on from the still 801 position of above-mentioned center line C bias, apply the spinning movement rotated around center line C.
Differential attachment portion 430 has: carriage 431, and it, under the state making the upper end of driving shaft 411 relative with the bottom of driven shaft 412, rotatably supports them; First bevel gear 432, it is fixedly mounted on the upper end of driving shaft 411; Second bevel gear 433, it is fixedly mounted on the bottom of driven shaft 412; And carrier 434, it has transmission bevel gear 435, and this transmission bevel gear 435 engages with both the first and second bevel gears 432,433 respect to one another.
Carriage 431 is supported on this still turntable 130, can rotate around center line C.That is, this carriage 431 and still turntable 130 can rotate around center line C respectively.
In the lower central of carriage 431, with same heart shaped, via bearing, axle support is carried out to driving shaft 411, at the center on top, with same heart shaped, via bearing, axle support is carried out to driven shaft 412.
In addition, the above-below direction pars intermedia of carriage 431 becomes the frame-shaped structure of roughly quadrangle, in this frame-shaped portion, rotatably supports carrier 434.
Carrier 434 is made up of following part: axle portion 436, and it is arranged on by the horizontal line orthogonal with center line C, being rotatably supported on carriage 431 via bearing between driving shaft 411 and the opposed end of driven shaft 412; And transmitting bevel gear 435, it is fixedly mounted in this axle portion 436.
Transmit bevel gear 435 to engage with both the first and second bevel gears 432,433, transmit in the mode making driving shaft 411 and driven shaft 412 carry out rotation reverse each other.
Utilize above-mentioned structure, differential attachment portion 430 forms differential gear train.
In Figure 5, the number of teeth of the first bevel gear 432 and the second bevel gear 433 is equal, and transmission speed is than being 1:1.
Such as, when transmitting rotation from driving shaft 411 to driven shaft 412, if carriage 431 is rotational angle α centered by driving shaft 411 and driven shaft 412, then transmit bevel gear 435 and produce the rotation corresponding with the number of teeth of the angle [alpha] of the first bevel gear 432, thus, the second bevel gear 433 is corresponding with angle [alpha] and rotate.Further, due to carriage 431 rotational angle α, so the second bevel gear 433 produces and the transmission rotation amount of bevel gear 435 and the total of the amount of spin of carriage 431, rotation that namely angle 2 α is corresponding.That is, by the rotation of the certain orientation of carriage 431, thus driven shaft 412 produces the differential seat angle corresponding with the rotational angle of two times relative to driving shaft 411 along the rotation direction of carriage 431.
Rotate linkage portion (rotation link gear) 440 when still turntable 130 rotates, with its interlock and make carriage 431 rotate to equidirectional with the ratio specified.
This rotation linkage portion 440 has: fixed gear 441, and it is fixed on bracing frame 105 with the state that cannot rotate; Back shaft 442, it is supported on still turntable 130 rotationally; Gear wheel 443(the 1st gear), it is fixed on back shaft 442, engages with fixed gear 441; Pinion 444(the 2nd gear), it is fixed on back shaft 442, engages with driven gear 445; And driven gear 445, it is fixedly mounted on carriage 431, rotates together with this carriage 431 around center line C.
Fixed gear 441 adopts the configuration centered by center line C, is spur gear, and gear wheel 443, when still turntable 130 rotates, engages with fixed gear 441 and rotates, simultaneously around this fixed gear 441 surrounding and move.That is, in this rotation linkage portion 440, form planetary gears, wherein, fixed gear 441 becomes sun gear, and gear wheel 443 becomes planetary gear.
Here, fixed gear 441 is identical with the number of teeth of gear wheel 443, and gearratio is set as 1:1.In addition, the number of teeth of pinion 444 and driven gear 445 is 1:2, corresponding with the rotation of pinion 444, transmits the rotation of half to driven gear 445 in reverse direction.
If make still turntable 130 rotate to fixed-direction, then above-mentioned gear wheel 443 by carrying out around movement together with still turntable 130 centered by center line C, thus the generation angle equal with the rotational angle of still turntable 130 changes, in addition, by with engaging between fixed gear 441, thus change around the back shaft 442 generation angle equal with the rotational angle of still turntable 130 relative to still turntable 130, therefore, be aggregated in the angle direction identical with still turntable 130 producing two times to change.
On the other hand, if make still turntable 130 rotate to fixed-direction, then pinion 444 by carrying out around movement together with still turntable 130 centered by center line C, thus the generation angle equal with the rotational angle of still turntable 130 changes, in addition, link with gear wheel 443 and produce the angle equal with the rotational angle of still turntable 130 relative to still turntable 130 around back shaft 442 and change, therefore, the angle that pinion 444 also produces two times on the direction identical with still turntable 130 changes.
On the other hand, if pinion 444 carries out around movement along with the rotation of still turntable 130, then driven gear 445 produces the angle equal with its rotational angle and changes on the direction identical with still turntable 130.But, because gear wheel 443 is along with the rotation produced because engaging with fixed gear 441, pinion 444 is rotated around back shaft 442, so in the opposite direction contrary with still turntable 130, corresponding with gearratio and produce the rotation of the rotational angle half of still turntable 130.Its result, for driven gear 445, is aggregated in the rotation of the rotational angle half direction identical with still turntable 130 producing still turntable 130.
That is, if make still turntable 130 rotate, then utilize this rotation linkage portion 440, relative to carriage 431, the direction identical with still turntable 130 is carried out the rotational action of the rotational angle half of still turntable 130 in linkage.
Differential transmission mechanism 400 is above-mentioned structure, if by the driving of still drive motor 401, driving shaft 411 is inputted along fixed-direction and the rotation of fixing rotary speed, then via differential attachment portion 430, rotate to driven shaft 412 transmission with identical rotary speed in reverse direction.
In addition, if inputted along fixed-direction by still turning motor 402 pairs of still turntables 130 and the rotation of fixing rotational angle, then utilize and rotate linkage portion 440, by carriage 431 along the direction identical with still turntable 130, transmit rotational action with the rotational angle of the half of still turntable 130.
If carriage 431 rotates with the rotational angle of the half of still turntable 130, then utilize differential attachment portion 430, make driven shaft 412 along the direction identical with carriage 431, produce the anglec of rotation change of two times of the rotational angle of driving shaft 411.
That is, relative to driving shaft 411, along the direction identical with still turntable 130, the anglec of rotation identical with the rotational angle of still turntable 130 can be applied to driven shaft 412 and change.Therefore, when still turntable 130 rotates, driven shaft 412 does not produce angle change relative to still turntable 130.
Therefore, on still turntable 130, under the state that the still 801 of container mechanism 800 is driven in rotation, even if carry out the rotation of still turntable 130, also apply the angle identical with the rotation of container mechanism 800 to driven shaft 412 to change, therefore, become following structure, namely, even if do not carrying out on the position of rotational action relative to the container mechanism 800 carried out on the still turntable 130 of rotational action, still drive motor 401 is set, also when still turntable 130 rotates, does not make the spinning movement inputted to the container mechanism 800 on still turntable 130 produce phase difference.
By the simple case specifically determined, the action of above-mentioned rotation linkage portion 440 and rotational angle are described.
If still turntable 130 revolves turnback counterclockwise, be then fixed on the gear wheel 443 on back shaft 442 and pinion 444, centered by center line C, revolve turnback counterclockwise together with still turntable 130.In addition, utilize fixed gear 441, make gear wheel 443 and pinion 444 revolve turnback counterclockwise around back shaft 442.
In addition, if pinion 444 revolves turnback counterclockwise together with still turntable 130 centered by center line C, then the driven gear 445 engaged with pinion 444 revolves turnback counterclockwise centered by center line C.
In addition, if pinion 444 revolves turnback counterclockwise around back shaft 442, then because the number of teeth of pinion 444 and driven gear 445 is 1:2, and make driven gear 445 90-degree rotation clockwise centered by center line C.
Its result, makes driven gear 445 produce the rotation of 90 degree counterclockwise, and this rotation is carried out adding up to obtaining with 90 degree of rotations clockwise by being rotated 180 counterclockwise degree.
Driven gear 445 is fixed on carriage 431, carriage 431 also 90-degree rotation counterclockwise.If carriage 431 90-degree rotation counterclockwise, then the second bevel gear 433 revolves turnback counterclockwise, and the rotation amount (self clockwise 90 degree) of bevel gear 435 and rotation amount (the anticlockwise 90 degree) total of carriage 431 are transmitted in this rotation.Because the second bevel gear 433 is fixed on driven shaft 412, so driven shaft 412 also revolves turnback counterclockwise.
As shown in Figure 2, on the input side sprocket wheel 822 of the outlet side sprocket wheel 416 be fixed on driven shaft 412 and container mechanism 800, Timing Belt 417 is hung.
But if still turntable 130 revolves turnback counterclockwise, then driven shaft 412 also revolves turnback counterclockwise.Therefore, along with the rotation of still turntable 130, do not make input side sprocket wheel 822 produce and rotate, so do not produce phase difference in container mechanism 800.
[oil supply mechanism]
In Fig. 9 (A) and Fig. 9 (B), oil supply mechanism is provided with: not shown fuel tank, and it is arranged on still pedestal 804, stores lubricating oil; And the oil feed pump 840 of plunger pump type.Oil feed pump 840 is made up of following parts: rotating part 841, and it is formed in the centre position of turned parts driving shaft 821; As the pump chamber 844 in oil supply space, it is formed by the notch 841a of still pedestal 804 inner circumferential and rotating part 841; Oil sealing 845,846, it is arranged on the upper and lower of pump chamber 844; The introducing port 843 of lubricating oil, it is communicated with pump chamber 844; The outlet 842 of lubricating oil, it is communicated with pump chamber 844; And plunger 847, it abuts with the periphery of rotating part 841, moves back and forth.
One lateral incision is that ellipticity is formed by the notch 841a of rotating part 841.In addition, introducing port 843 is connected with fuel tank via oil pipe.In addition, outlet 842 is connected with still axle 811 and still orbital plane via oil pipe.
If from top view, then turned parts driving shaft 821 rotates counterclockwise, makes introducing port 843 produce negative pressure, utilizes this negative pressure to produce attraction, in fuel tank, attracts lubricating oil.For the lubricating oil be attracted in pump chamber, by the rotation of turned parts driving shaft 821 and the effect of plunger 847, to still axle and still orbital plane pressurized delivered (supply) lubricating oil.
In addition, in this oil supply mechanism, be illustrated plunger displacement pump as oil feed pump 840, but also can adopt the other forms of pump that can use rotary driving source.
[cutter mechanism]
Cutter mechanism 830 has: cutting knife pedestal 832, and it is fixed maintenance to fixedly cutting 831; Movable cutting knife 833, it is by the co-operating with fixed cutting tool 831, by reaching the standard grade of being connected with suture needle 11 and from bobbin pull out roll off the production line at least one cut off; Cutting knife keeps wrist 834, and it keeps movable cutting knife 833; Cutting knife back shaft 835, it can make cutting knife keep wrist 834 to rotate around Z axis; Cutter driving cam (tangential cam) 836, it keeps wrist 834 to apply rotational power to cutting knife; And connecting member, above-mentioned tangential cam and above-mentioned cutting knife back shaft link by it.Above-mentioned connecting member has: cutter driving wrist 837, and it is arranged on the bottom of cutting knife back shaft 835, inputs rotational power from cutter driving cam 836; And roller 837a, its rotatable earth's axis is supported on the end of cutter driving wrist 837, abuts with the periphery of cutter driving cam 836.Further, have in cutter mechanism 830: the cylinder 838 of cutter driving, it switches from cutter driving cam 836 to the connection of the power of cutter driving wrist 837 input and cut-out; And transmitting wrist 839, it transmits the switching action of cylinder 838.
Cutting knife back shaft 835 and still axle 811 configure abreast, are rotatably supported on still pedestal 804, and fixed cutting tool keeps the base end part of wrist 834 at its upper end.Keep the leading section of wrist 834 to fix at cutting knife and movably cut 833, by the reciprocating rotary of cutting knife back shaft 835, make movable cutting knife 833 above still 801 and the below reciprocating action of sewn object, movable cutting knife 833 is capturing after this reaches the standard grade and roll off the production line, with fixedly cut 831 co-operatings, reach the standard grade and roll off the production line cut off what capture.
Drive wrist 837 at the lower end fixed cutting tool of cutting knife back shaft 835, make the roller 837a be supported on the end of cutter driving wrist 837, the periphery of the cutter driving cam 836 formed with by periphery cam abuts.By the rotation of cutter driving cam 836, corresponding with the peripheral shape of cutter driving cam 836 and input rotational action.In addition, as cutter driving cam (tangential cam) 836, show the example be made up of periphery cam, but also can adopt grooved cam.
Cutter driving cam 836 is fixed on the bottom of turned parts driving shaft 821, rotates together with turned parts driving shaft 821.Further, the distance that a part for its periphery is formed as at a distance of pivot is comparatively large, applies rotational action from this position via roller 837a to cutter driving wrist 837.
As noted above, cutter mechanism 830 obtains the power of thread cutting action from turned parts driving shaft 821.
The cylinder 838 that fixed cutting tool drives on above-mentioned still pedestal 804, the take-off lever (not shown) of cylinder 838 links with cutting knife back shaft 835 via transmission wrist 839.Because turned parts driving shaft 821 rotates to fixed-direction continuously in making, so cutter driving cam 836 also carries out continuous rotation in the same manner.Therefore, in cutter mechanism 830, in making, cylinder 838 is controlled, roller 837a is made to retreat to the position do not contacted with cutter driving cam 836 via transmission wrist 839, during execution tangent line when sewing finishing etc., make cylinder 838 action, roller 837a is abutted with cutter driving cam 836.
[control system of Sewing machines: control device]
Figure 10 is the block diagram of the control system representing Sewing machines 100.Sewing machines 100 has the control device 110 as action control unit, and it is for controlling the action of above-mentioned each several part, each parts.Further, control device 110 has: ROM112, and it stores the program for the action control in making; RAM113, it becomes the operating area of calculation process; As non-volatile data storage 114 of memory cell, it stores stitch data; And CPU111, it performs the program in ROM112.
In addition, CPU111 is via not shown interface and sewing machine electromotor drive circuit 21a, X-axis motor drive circuit 102e, Y-axis motor drive circuit 102f, drive motor drive circuit 401a, still rotary electric drive circuit 402a, pin rotating motor drive circuit 32a connects, via them further with sewing machine electromotor 21, X-axis motor 102c, Y-axis motor 102d, still drive motor 401, still turning motor 402, pin rotating motor 32 connects respectively, to each motor 21, 102c, 102d, 401, 402, the driving of 32 controls.
In addition, sewing machine electromotor 21 has not shown encoder, its detection angles is exported to CPU111.
In addition, the not shown initial point retrieval unit be arranged on above-mentioned each motor 102c, 102d, 401,402,32 is connected with CPU111, and export according to it, CPU111 can identify the origin position of each motor.
In addition, CPU111 is connected with drive circuit 838b via interface, carries out the control of electromagnetic valve 838a via this drive circuit 838b, and the opening and closing of this drive circuit 838b to the electromagnetic valve 838a making cutter driving cylinder 838 action of container mechanism 800 switches.
In the stitch data that data storage 114 stores, store in order the tailoring pattern for making regulation, for the X-axis motor 102c of each pin and the actuating quantity of Y-axis motor 102d, CPU111 is when making, for each pin, carry out the action control that X-axis motor 102c and Y-axis motor 102d is driven.
In addition, control device 110 implements Synchronization Control when making to sewing machine electromotor 21 and still drive motor 401, to make the cycle that moves up and down of needle bar 12 consistent with the swing circle of still 801.Therefore, on sewing machine electromotor 21 and still drive motor 401, arrange simultaneously and eliminate illustrated encoder respectively.
In addition, together, execution adds coiling mark and avoids controlling for CPU111 and the execution of making control based on above-mentioned stitch data.As shown in figure 11, on an x-y plane, using the position of the center line C from needle bar towards the datum line P(of the position of the rotation centerline of still 801 with reference to Fig. 2) direction as benchmark (0 °) when, produce add coiling mark make the region H that direction becomes oblique line.That is, as shown in the figure, if handled the needle in the angular range of direction formation θ 1 to the θ 2 of still 801 relative to the position from needle bar center line C, then produce and add coiling mark.Because the above-mentioned generation direction adding coiling mark changes along with the kind of still and the difference of other each conditions, thus also can for every platform Sewing machines determine carry out try seam etc. after obtain angle θ 1, θ 2 numerical value.The value of these θ 1, θ 2 logs in data storage 114 in advance.
In addition, in CPU111, read the actuating quantity of the X-axis motor 102c for each pin in stitch data and Y-axis motor 102d when making after, according to this each actuating quantity, the direction of making of next time handling the needle is calculated, to the position of current still 801 for judging in making of going out of the benchmark angular range whether direction be in θ 1 to θ 2.Further, time in scope, before the pin that carries out falling, till the angle departed from from the angular range of θ 1 to θ 2, pin rotating motor 32 and still turning motor 402 are synchronously driven, thus needle bar 12 and still pedestal 804 are rotated around center line C.In addition, outside the angular range making direction and be in θ 1 to θ 2, current needle bar 12 and the turned position of still pedestal 804 is maintained.
Avoid controlling by implementing the above-mentioned coiling mark that adds to the whole pins in stitch data, thus the generation adding coiling mark can be avoided in tailoring pattern entirety.
That is, this control device 110 works as making control unit.
Based on Figure 12, specifically describe add coiling mark avoid control.
First, when making, CPU111 reads in the amount of movement of X-direction and Y direction and reads in the stored angle (step S1) centered by the center line C of current still 801 from stitch data.
Then, the angle θ 0(step S3 of direction relative to the datum line P linked the center of the position of center line C and still 801 is made in calculating).
Then, judge (step S5) in the angular range that whether CPU111 is in θ 1 to θ 2 to the angle θ 0 making direction calculated.
Further, outside angular range, directly end process, carry out falling pin, time in angular range, judgement should make still 801 rotate (step S7) to which direction positive and negative.
Namely, the absolute value whether absolute value of θ 1-θ 0 being less than to θ 2-θ 0 judges, when the absolute value of θ 1-θ 0 is less, be added obtained angle with this value with the angle [alpha] becoming surplus, make still 801 and needle bar 12 carry out rotating (step S9) to forward.
In addition, when the absolute value of θ 2-θ 0 is less, the angle be added with the angle [alpha] becoming surplus with this value, makes still 801 and needle bar 12 carry out rotating (step S11) to opposite direction.
In addition, the angle [alpha] preferably becoming surplus can set arbitrarily, and its setting value is stored in data storage 114.In addition, this α is also absolute value.
In addition, CPU111 judges to add coiling mark angular regions next time, and stores still 801 angle of rotating around center line after rotating.
Then, terminate to add coiling mark to avoid controlling.In addition, above-mentioned control implements before the pin that falls of every pin.
Thus, by corresponding with the rotation of needle bar 12 and make still 801 rotate, thus the tip of still 801 is made to become the state forming desirable stitching all the time relative to the position relationship of the through wires hole of suture needle 11.
In addition, in above-mentioned control, can after the initial point retrieval carrying out still turning motor 402, all the time the angle that still 801 rotates around center line C is grasped by successively storing control action amount, but also angular transducer can be set on still turntable 130 or needle bar turntable 31, be obtained the angle of still 801 by its detection.
[action effect of the first embodiment]
Utilize above structure, in Sewing machines 100, control device 110 is utilizing cloth travel mechanism 102 to make before sewn object moves, when the moving direction of this sewn object is included in predetermined adding in the generation scope of coiling mark, in the mode making moving direction depart from this scope, still turning motor 402 is driven, still pedestal 804 and needle bar 12 are rotated around center line C, thus, effectively can avoid the generation adding coiling mark, by stitching of realizing ideal in the whole process of making, thus significantly can improve quality of sewing.
In addition, owing to utilizing differential transmission mechanism 400, even if make still pedestal 804 rotate around center line C, also maintain still 801 and fix relative to the phase place of suture needle 11, so the tip of still 801 can be made to reach the standard grade from suture needle 11 seizure in suitable timing, stable making can be carried out.
In addition, owing to utilizing differential transmission mechanism 400, the still drive motor 401 becoming the rotary driving source of still 801 need not be carried on still pedestal 804, phase difference still 801 produced when still pedestal 804 rotates can be prevented, so the lightweight of still turntable 130 can be realized, as still turning motor 402, can use and export little miniature motor, further, the support structure etc. of still turntable 130 also can be miniaturized.
In addition, the moment of inertia of still turntable 130 can be reduced, the error of the rotational action of still can be reduced, the rotational action of accurate action control and still 801 at a high speed can be realized.Therefore, the high speed made can also be realized.
In addition, as other examples of differential transmission mechanism, also can not use and rotate linkage portion 440, and the driven sprocket that external diameter is 1:2 is installed respectively on still turntable 130 and carriage 431, by above-mentioned driven sprocket concentric arrangement, further, by carrying out rotary actuation via Timing Belt respectively from still turning motor 402, thus still turntable 130 and carriage 431 is made to carry out linkage rotation to equidirectional with the anglec of rotation of 2:1.
But, there is following possibility under the above structure, namely, the Timing Belt corresponding with still turntable 130 and the Timing Belt corresponding with carriage 431, error is produced, thus, when still pedestal 804 rotates due to respective extension, make still 801 produce phase difference, tip cannot be made to reach the standard grade at suitable timed capture.
On the other hand, in Sewing machines 100, rotate linkage portion 440 owing to arranging between still turntable 130 and carriage 431, if so rotate to the some applyings still turntable 130 or carriage 431 from still turning motor 402, then also can apply to rotate to another.Therefore, the situation as utilized 2 Timing Belts to apply respectively to rotate to still turntable 130 and carriage 431 can be suppressed such, the development length difference produced due to 2 Timing Belts and the phase offset of still 801 that causes.
In addition, when Sewing machines 100, also exist and rotate the possibility that linkage portion 440 produces skew between still turntable 130 and carriage 431, but because still turntable 130 and carriage 431 are with the close configuration of same heart shaped, so the skew of rotating linkage portion 440 can be reduced fully.Especially, by making rotation linkage portion 440 be made up of gear mechanism, thus the skew that caused by the extension of Timing Belt can be avoided, the tip of still 801 can be made to reach the standard grade at more suitable timed capture.Therefore, the generation of bouncing pilotage etc. can be reduced when still rotates, can making of high quality of sewing be carried out.
In addition, the pin rotating motor 32 of above-mentioned needle bar rotating mechanism 30 and the still turning motor 402 of differential transmission mechanism 400, also can realize sharing by 1 motor.Such as, also can be configured to, by the power of still turning motor 402, via the known Poewr transmission mechanism be made up of the axle be configured in sewing machine stand 101, gear mechanism, belt mechanism or their combination, to the needle bar turntable 31 of needle bar 12 can be kept up or down to link (transmission), it is made to rotate centered by above-mentioned center line C.In addition, on the contrary, also can be configured to, by the power of pin rotating motor 32, utilize known Poewr transmission mechanism to transmit to still turntable 130 side of differential transmission mechanism 400.Specifically, also can be configured to, on sewing machine stand 101, arrange from Sewing machines arm 101a to the rotating shaft along Z-direction of sewing machine base portion 101b, independent motor (pin rotating motor 32 or still turning motor 402) is utilized to apply rotational power to this rotating shaft, further, this rotating shaft is installed drive sprocket 33,421, also can link (transmission) rotational action via belt mechanism or gear mechanism to drive sprocket 33,421 from this rotating shaft.
As noted above, when adopting pin rotating motor 32 and still turning motor 402 shares the structure of 1 motor, the number of motor can be reduced, realize the productive raising of Sewing machines.In addition, do not need the Synchronization Control of each motor 32,402, the structure of control circuit etc. can be made simpler.
In addition, in above-mentioned Sewing machines 100, directly rotation is not transmitted from differential transmission mechanism 400 to the still axle 811 of container mechanism 800, but carry out moment of torsion input to turned parts driving shaft 821, from turned parts driving shaft 821 via torque-transmitting mechanisms 810, by the rotary speed speedup to two times of turned parts driving shaft 821, and rotate to still axle 811 transmission.
Due to the axle that above-mentioned turned parts driving shaft 821 is for making turned parts 806 periodic rotary, as long as so to carry out rotating with the identical cycle that moves up and down of needle bar 12, rotate with the speed of the rotary speed half of still axle 811.Therefore, with situation from still drive motor 401 to still axle 811 input torque compared with, as long as carry out rotating with the speed of half, can use and export little miniature motor.
In addition, be configured to, to turned parts driving shaft 821 input torque carrying out rotating with the speed of the half of still axle 811, apply moment of torsion from this turned parts driving shaft 821 to the oil feed pump 840 of each structure of container mechanism 800, i.e. oil supply mechanism, cutter mechanism 830, still 801.In the case, with be configured to still axle 811 input torque, from still axle 811 to oil feed pump 840, cutter mechanism 830, situation that each structure of turned parts mechanism 820 applies moment of torsion compare, reduce the parts carrying out spinning movement with the speed (two speeds of needle bar 12) identical with still 801, therefore, the power for making container mechanism 800 entirety carry out action can being reduced, from this starting point, also can use and exporting little miniature motor as still drive motor 401.
In addition, owing to being configured to oil feed pump 840 from from turned parts driving shaft 821 to container mechanism 800, cutter mechanism 830, still 801 apply moment of torsion, so can power be concentrated, the minimizing of the number realizing necessary drive source and the power transmission member transmitting power to each several part.
[modification of each several part of the first embodiment]
Also the still drive motor 401 of sewing machine electromotor 21 and differential transmission mechanism 400 can be made to share 1 motor.Such as, also can be configured to, by the power of still drive motor 401, via the known Poewr transmission mechanism be made up of the axle be configured in sewing machine stand 101, gear mechanism, belt mechanism or their combination, linking (transmission) to the upper axle 22 for making needle bar move up and down, carrying out moving up and down of needle bar 12.In addition, on the contrary, also can be configured to, by the power of sewing machine electromotor 21, utilize known Poewr transmission mechanism to link (transmission) to driving shaft 411 side of differential transmission mechanism 400.
Specifically, also can be configured to, on sewing machine stand 101, arrange from Sewing machines arm 101a to the rotating shaft along Z-direction of sewing machine base portion 101b, bevel gear mechanism is utilized to link in the mode can carrying out power transmission on this rotating shaft and upper axle 22, utilize belt mechanism or gear mechanism, driving shaft 411 and this rotating shaft are linked in the mode can carrying out power transmission, omit still drive motor 401.
In addition, also can be configured to, apply revolving force from still drive motor 401 to above-mentioned rotating shaft, rotary actuation is carried out to upper axle 22, omit sewing machine electromotor 21.
As noted above, when being configured to make sewing machine electromotor 21 and still drive motor 401 share the structure of 1 motor, the number of motor can being reduced, realize the productive raising of Sewing machines.
In addition, do not need the Synchronization Control of each motor, the structure of control circuit etc. can be made simpler.
In addition, even if when making sewing machine electromotor 21 and still drive motor 401 shares 1 motor, linkage portion 440 is rotated owing to having, so such as under the halted state of Sewing machines, when carrying out making the still turntable 130 of still 801 rotate when safeguarding and wait, do not move up and down to needle bar 12 transmission, the contact etc. between suture needle 11 and other objects can be prevented.To be configured to from sewing machine electromotor 21 via gear mechanism etc. to driving shaft 411 input torque, and when applying moment of torsion to turned parts driving shaft 821, different from the situation that two speeds of this above axle of situation such as applying moment of torsion to still axle carry out moment of torsion applying, as long as carry out moment of torsion with the speed equal with upper axle to apply, therefore, the wearing and tearing etc. of the transferring elements such as gear can be reduced, the raising of durability can be realized.
In addition, in above-mentioned Sewing machines 100, be illustrated the still 801 be made up of the all-round rotating kettle of level, but also can use the vertical still of all-round rotation, also can use the vertical still that half cycle rotates.
When using vertical still, preferred following structure, that is, on the midway (such as still pedestal 804) of the power transfer path till still drive motor 401 to still 801, arrange bevel gear mechanism etc., transmits revolving force to still axle in the horizontal direction.In addition, in the case, owing to not needing turned parts, so preferably do not apply revolving force via turned parts axle to still axle.
In addition, when using half cycle rotating kettle, preferred following structure, namely, on the midway (such as still pedestal 804) of the power transfer path till still drive motor 401 to still 801, arranging all-round rotation transformation is the known mapping device (such as, Eccentric earn mechamism or crank mechanism etc.) of reciprocating rotation.
In addition, by the modification that above-mentioned motor shares, other embodiments shown below or other variation is substantially also applicable to.
[the second embodiment]
Second embodiment of the present invention is described.In the Sewing machines involved by this second embodiment, carry the differential transmission mechanism 400A that there is spinning movement portion 420A, differential attachment portion 430A and rotate linkage portion 440A, wherein, spinning movement portion 420A, differential attachment portion 430A and rotation linkage portion 440A have employed from the spinning movement portion 420 of above-mentioned Sewing machines 100, differential attachment portion 430 and rotate the different structure of linkage portion 440.
In the following description, be only described the difference of differential transmission mechanism 400A and differential transmission mechanism 400, for identical structure, mark identical label, the repetitive description thereof will be omitted.
In Figure 13 and Figure 14, spinning movement portion 420A is different from above-mentioned spinning movement portion 420, is not apply rotatory force to still turntable 130, but becomes the structure applying rotatory force to carriage 431A.That is, spinning movement portion 420A, the driven sprocket 422A as slave unit from still turning motor 402 to the top being arranged on carriage 431A applies rotatory force.
Differential attachment portion 430A has: carriage 431A, and it is supported by bracing frame 105, can rotate around center line C, and, under the state making the upper end of driving shaft 411 relative with the bottom of driven shaft 412, rotatably they are supported; First spur gear 432A, it is fixedly mounted on the upper end of driving shaft 411; Second spur gear 433A, it is fixedly mounted on the bottom of driven shaft 412; And carrier 434A, it has spur gear 435A, 437A of engaging respectively with first and second spur gear 432A, 433A respect to one another.
Carrier 434A has under the state of Z-direction, is rotatably being supported in the axle portion 436A on carriage 431A, and on this axle portion 436A, 2 spur gears 435A, 437A vertically fixedly mount, and can rotate simultaneously.
First spur gear 432A and the gear ratio of spur gear 435A engaged with it are 3:1, by the rotation from the first spur gear 432A to spur gear 435A in reverse direction with at triple speed transmission.
Second spur gear 433A and the gear ratio of spur gear 437A engaged with it are 1:1, the rotation from spur gear 437A are transmitted with equal velocity in reverse direction to the second spur gear 433A.
Such as, in said structure, if under the state making driving shaft 411 stop, carriage 431A is rotated to prescribed direction, then on 2 spur gears 435A, 437A, along the direction identical with carriage 431A, produce with the angle of four of carriage 431A times and rotate.Its result, along the opposite direction contrary with carriage 431A, with the angle of two of carriage 431A times, transmits to the second spur gear 433A and rotates.Utilize above-mentioned structure, differential attachment portion 430A forms so-called differential gear train.
The angle change of above-mentioned second spur gear 433A is described in detail.
On the second spur gear 433A, produce the angle equal with the anglec of rotation of carriage 431A along the direction identical with carriage 431A and change.On this basis, on the second spur gear 433A, 3 speeds of rotating around axle portion 436A with spur gear 437A, along the second spur gear 433A with carriage 431A opposite direction, produce 3 speeds angle change.After these 2 kinds of angle change superpositions, edge and carriage 431A opposite direction, with the angle of two of carriage 431A times, transmit to the second spur gear 433A and rotate.
Therefore, when making still turntable 130 rotate, in order to make the rotation of transmitting from driving shaft 411 to driven shaft 412 not produce phase place change, as long as make carriage 431A edge and still turntable 130 opposite direction, with the angular turn of the half of still turntable 130.
Based on above-mentioned prerequisite, rotation linkage portion 440A has makes carriage 431A edge with still turntable 130 opposite direction with the function of the angular turn of the half of still turntable 130.In other words, apply from still turning motor 402 to carriage 431A to rotate if rotate linkage portion 440A, then edge and carriage 431A opposite direction, with the rotational angle of two times, still turntable 130 is linked and rotate.
That is, rotate linkage portion 440A to have: 3 planetary gear 441A, it is supported on bracing frame 105 with rotatable state; The driven gear 443A of external tooth, it is fixedly mounted on still turntable 130 with same heart shaped; And the driving gear 445A of internal tooth, it is fixedly mounted on carriage 431A with same heart shaped.
Driven gear 443A is fixed on the bottom of still turntable 130 with same heart shaped, rotates together with this still turntable 130 around center line C.
Driving gear 445A is fixed on the top of carriage 431A with same heart shaped, rotates together with this carriage 431A around center line C.
In addition, the driven gear 443A of external tooth is configured in the inner side of the driving gear 445A of internal tooth with same heart shaped, between said gear 443A, 445A, with the state distributing planetary gear 441A engaged with both.
In addition, the number of teeth ratio of the driving gear 445A of internal tooth and the driven gear 443A of external tooth is 2:1, if apply from still turning motor 402 to carriage 431A to rotate, then edge and carriage 431A opposite direction, rotate to still turntable 130 transmission with the rotational angle of two times.
Thus, rotate linkage portion 440A by the co-operating with differential attachment portion 430A, when still turntable 130 rotates, transmitting rotation from driving shaft 411 to driven shaft 412, the phase offset rotated can be prevented.
In addition, because the planetary gear 441A rotating linkage portion 440A is supported on bracing frame 105, so do not carrying out around movement as around the driven gear 443A of sun gear, if but from driven gear 443A angle, then because planetary gear 441A relatively carries out around movement around driven gear 443A, so can say that rotating linkage portion 440A substantially constitutes planetary gears.
The differential transmission mechanism 400A be made up of said structure, also can obtain the effect identical with differential transmission mechanism 400.
[the 3rd embodiment]
Based on Figure 15 to Figure 24, the two-needle sewing machine illustrated as the 3rd embodiment is described.
In the following description, be only described with the difference of Sewing machines 100 in two-needle sewing machine, for identical structure, mark identical label, the repetitive description thereof will be omitted.
Have in two-needle sewing machine: along 2 needle bars 12B, 12B of left-right situs; And 2 container mechanisms 800A, 800B, they with 2 pins 11 be supported on 2 needle bars 12B, 12B, 11 corresponding.
In two-needle sewing machine, when along centered by needle bar make arbitrarily direction conveying sewn object, needle bar is rotated, and the orientation maintaining the 2 piece pins corresponding with making direction is constant, to make no matter for which direction, the interval that all can maintain stitching is constant, and corresponding and carry out the spinning movement of 2 stills.
In addition, above-mentioned as in the Sewing machines 100 of single needle sewing machine, be configured to needle bar is rotated and still is rotated, to avoid the generation adding coiling mark, but in two-needle sewing machine, for the purpose of the interval maintaining 2 stitchings is constant, need to make needle bar and still rotate around the center line C of regulation or rotate.
In above-mentioned Sewing machines 100, using by the plumb line of the suture needle 11 center line C as the rotation of needle bar 12B and still 801, but in this two-needle sewing machine, by the plumb line of the middle of the suture needle 11,11 of 2 arrangements, become the center line C of the rotary motion of 2 needle bar 12B and 2 stills 801.
In Figure 15 and Figure 16, above-mentioned two-needle sewing machine mainly has: 2 needle bars 12B, 12B, and their bottom keeps suture needle 11 respectively, moves up and down along Z-direction; Pin reciprocating mechanism 20B, sewing machine electromotor 21 as drive source, makes suture needle move up and down by it; Needle bar rotating mechanism 30B, it is via the needle bar turntable 31B that can support 2 needle bars 12B, 12B up or down, and 2 needle bars 12B, 12B are rotated around the center line C along Z-direction; Bolt lock mechanism 50B, it keeps 2 needle bars 12B, 12B, transmits the action that moves up and down of pin reciprocating mechanism 20B; Stop mechanism 90B, it keeps by the needle bar 12B after the releasing of the hold mode of bolt lock mechanism 50B; Action component 16B, it switches the hold mode to each needle bar 12B, 12B of bolt lock mechanism 50B and disarm state; Position switching mechanism 60B, its position of carrying out action component 16B switches; Container mechanism 800B, it has reaching the standard grade and 2 stills 801,801 be wound around that roll off the production line by each suture needle 11,11; Differential transmission mechanism 400B, it transmits power from still drive motor 401 to still 801,801; As the cloth travel mechanism 102 of travel mechanism, it keeps cloth, carries out running fix arbitrarily along X-Y plane; Sewing machine stand 101; And control device 110B(is with reference to Figure 22), it controls each structure.
As noted above, in two-needle sewing machine, for by the arbitrary needle bar 12B in 2 needle bars 12B, 12B with the way selection of the pin that do not fall remain on top bolt lock mechanism 50B and stop mechanism 90B be necessary, further, the position switching mechanism 60B etc. for the hold mode to needle bar 12B, 12B and disarm state switching bolt lock mechanism 50B and stop mechanism 90B is needed.In addition, needing for making 2 stills 801 carry out the structure this point rotating and rotate, is the main difference point with above-mentioned Sewing machines 100.
[pin reciprocating mechanism]
As shown in Figure 15 and Figure 16, pin reciprocating mechanism 20B has: upper axle 22; Sewing machine electromotor 21; Needle bar crank 23; Toggle-action lever 24; Needle bar clasps portion 25B, and it links via bolt lock mechanism 50B and needle bar 12B, 12B; And endless member 26B, it is clasped portion 25B in the mode can rotated around Z axis to needle bar and keeps.
Support the needle bar turntable 31B of needle bar 12B, 12B, supported in the mode can rotated around Z axis by sewing machine stand 101, need allowing that from toggle-action lever 24 to needle bar 12B, 12B transmission is while the rotation of Z axis, transmits and moves up and down action.
Therefore, needle bar is clasped portion 25B and is formed as roughly ring-type, entreat in opening portion wherein and insert needle bar 12B, 12B, bolt lock mechanism 50B and needle bar turntable 31B, and, clasp 2 back shafts 251B, 251B along Y direction of linking with the both sides of the bolt lock mechanism 50B keeping needle bar 12B, 12B within it.Utilize this back shaft 251B, 251B, needle bar is clasped portion 25B and can be become be integrated with needle bar 12B, 12B via bolt lock mechanism 50B, moves up and down.
In addition, clasp on the outer peripheral face of portion 25B at needle bar, form groove 252B along whole circumference, this groove 252B is chimeric with endless member 26B, and needle bar 12B can slide along this groove 252B.This endless member 26B is semicircle shape.A diametric end of endless member 26B and the bottom of toggle-action lever 24 link, and can rotate around Y-axis, on the other end, can install the square link stopper 261B of rectangle around Y-axis rotationally.In addition, the opposition side of the endless member 26B in the bottom of toggle-action lever 24, also can install square link stopper 241B around Y-axis rotationally.Further, above-mentioned square link stopper 241B, 261B are chimeric with the not shown guiding groove along Z-direction be formed in sewing machine stand 101, endless member 26B and needle bar clasp portion 25B maintenance level towards state under, guide moving up and down action.In addition, endless member 26B is semicircle shape when top view, but also can be formed as the ring-type of crossing over whole circumference.
Utilize this structure, the bottom of toggle-action lever 24 moved up and down action, clasp portion 25B, bolt lock mechanism 50B via endless member 26B, needle bar and transmit to 2 needle bars 12B, 12B, and, the rotational action around Z axis of needle bar turntable 31B can be allowed.
[needle bar turntable]
Needle bar turntable 31B is as shown in Figure 15 and Figure 16, and its top 311B and bottom 312B is formed as block, and, utilized this upper and lower 2 sidewall portions 313B, 314B along Z-direction to link.
In addition, top 311B and bottom 312B, all run through the through hole being formed and 2 needle bars 12B, 12B are inserted along Z-direction, and they is supported rotationally by sewing machine stand 101.Further, the rotary centerline C of this needle bar turntable 31B is parallel with Z-direction, in addition, from top view, is designed to the roughly centre by 2 needle bars 12B, 12B.
In addition, on sidewall portion 313B, form the elongated hole 315B along Z-direction, the back shaft 251B above-mentioned needle bar being clasped portion 25B and bolt lock mechanism 50B link is inserted.
[bolt lock mechanism]
As shown in figure 17, above-mentioned needle bar 12B forms the groove portion 121B along Z-direction, in the bottom of this groove portion 121B, forms the connecting hole 122B for making bolt lock mechanism 50B keep needle bar 12B, on the top of groove portion 121B, form the connecting hole 123B for making stop mechanism 90B keep needle bar 12B.In addition, arrange oscillating deck 124B swingably in the inside of groove portion 121B, it is for switching to the needle bar hold mode of bolt lock mechanism 50B by the needle bar hold mode of stop mechanism 90B.
Bolt lock mechanism 50B has: holder 51B, and it forms 2 patchholes that 2 needle bars 12B, 12B are inserted along Z-direction; 2 latch 52B, it is through in the circular support hole of each patchhole to the front from holder 51B and inserts; 2 follower link 53B, it makes each latch 52B separately retreat movement; Press pressing spring 54B for 2, it applies the locomotivity of direction of advance respectively to each latch 52B via each follower link 53B; 2 engagement pawl 55B, it, under the state (retreating position) making each latch 52B retreat, engages respectively; Press pressing spring 56B for 2, each engagement pawl 55B presses to the direction of carrying out engaging by respectively; And remove pin 57B, it can from outside input for removing the operation of the locking of each engagement pawl 55B.
2 patchholes of holder 51B are formed along X-direction, support roughly columned latch 52B in the mode can slided along X-direction.
Rearward end and the follower link 53B of this latch 52B link, and follower link 53B utilization is pressed pressing spring 54B and pressed to needle bar 12B side by latch 52B.The leading section of latch 52B is formed as the shape can inserted in the connecting hole 122B of needle bar 12B, maintain the fastening state between latch 52B and the connecting hole 122B of needle bar 12B by the pressing force of pressing spring 54B, become the confining force that bolt lock mechanism 50B keeps needle bar 12B.
In addition, if the upper end of follower link 53B presses, then latch 52B can be made to retreat downwards, the hold mode to needle bar 12B of bolt lock mechanism 50B can be removed.
In addition, when above-mentioned latch 52B retreats, by the engagement pawl 55B pressed upward constantly by pressing spring 56B, the leading section of latch 52B is engaged, the advance of this latch 52B is moved and limits.In addition, 2 engagement pawl 55B all can remove the locking state of latch 52B by being pressed by releasing pin 57B downwards.
The upper end of follower link 53B, when arriving needle bar top dead centre in the moving up and down of needle bar 12B, can by with can be slidingly supported at the protruding 161B(of the action component 16B shown on the top 311B of needle bar turntable 31B, Figure 15 along Y direction shown in Figure 17) collide and press.Namely, the solenoid 61B that action component 16B can utilize the position can carrying out 3 positions to switch, realize the movement to Y direction, carry out following control, that is, the position P1 collided to the follower link 53B of the hold mode with a releasing needle bar 12B, position P3 collide with the follower link 53B of the hold mode removing another needle bar 12B, to sell the position P2 that 57B collides with releasing and carry out position switching.Action component 16B passes through in the enterprising line position switching action of needle bar turntable 31B, thus is removed the hold mode of each needle bar by bolt lock mechanism 50B.
Thus, the maintenance to 2 needle bars 12B, 12B and the releasing of bolt lock mechanism 50B can be carried out respectively.
[stop mechanism]
Stop mechanism 90B has: 2 stop dog part 91B, and it is at the top 311B of needle bar turntable 31B, is through to the insertion that inserts in the hole that 2 of the patchhole of needle bar 12B are circular to the front from this needle bar turntable 31; Press pressing spring 92B for 2, each stop dog part 91B individually presses to needle bar 12B side by it; And cover body 93B, it supports in the wings respectively by pressing spring 92B, and covers the patchhole of stop dog part 91B and carry out obturation.
The patchhole of each stop dog part 91B is all formed along X-direction, can be slidably supported roughly columned stop dog part 91B along X-direction.
The leading section of stop dog part 91B is formed as the shape can inserted in the connecting hole 123B of needle bar 12B, maintain the fastening state between stop dog part 91B and the connecting hole 123B of needle bar 12B by the pressing force of pressing spring 92B, become the confining force that needle bar 12B is kept of stop mechanism 90B.
But, stop dog part 91B presses pressing spring 92B, with latch 52B by compared with pressing spring 54B, pressing force is set fully little, only otherwise under the disarm state of latch 52B, then press oscillating deck 124B by latch 52B, do not utilize stop mechanism 90B to carry out the maintenance of needle bar 12B.That is, in stop mechanism 90B, only the protruding 161B of follower link 53B and action component 16B is collided and remove by bolt lock mechanism 50B the needle bar 12B kept and keep.
[needle bar rotating mechanism]
Needle bar rotating mechanism 30B, as shown in Figure 15 and Figure 16, has: above-mentioned needle bar turntable 31B; Pin rotating motor 32; Drive sprocket 33; Driven sprocket 34, it is fixedly mounted on the upper end of needle bar turntable 31B; And Timing Belt 35.In addition, if pin rotating motor 32 drives, then needle bar turntable 31B can be made to rotate around it center line C by drive sprocket 33, Timing Belt 35 and driven sprocket 34 and rotate.
[position switching mechanism]
In figure 18, position switching mechanism 60B is that the solenoid 61B as actuator for being fixedly mounted on sewing machine stand 101 inside to utilization carries out that rotate, that needle bar turntable 31B carries action component 16B, transmits the mechanism applying position switching action.
This position switching mechanism 60B has: solenoid 61B, and it can stop 3 positions; Rack member 62B, it is arranged on the plunger of solenoid 61B; And the differential transmission mechanism 63B in needle bar side, it transmits position switching action by rack member 62B to action component 16B from solenoid 61B.
Solenoid 61B can control in the mode optionally stopped on 3 positions, and each stop position is corresponding with the switching position P1 ~ P3 of above-mentioned action component 16B.
Rack member 62B can utilize solenoid 61B and retreat along Y direction mobile, forms rack tooth along this advance and retreat moving direction.
The differential transmission mechanism in needle bar side (differential transmission mechanism) 63B has: as the input gear 631B of input block, and it inputs rotational action from the solenoid 61B as actuator via rack member 62B; As the output gear 632B of output block, it applies position switching action by rotational action to action component 16B; Carrier 64B, revolving force reversion is transmitted by it between input gear 631B and output gear 632B; And rotational support body 65B(is shown in Figure 16), it supports carrier 64B, and the rotary centerline C of carrier 64B cast-over rod turntable 31B is carried out around movement.
In addition, above-mentioned input gear 631B, output gear 632B and rotational support body 65B, the shaft-like portion 316B by the upper end being formed in needle bar turntable 31B supports, and can rotate around rotary centerline C.In addition, input gear 631B has the 1st gear part 631Ba of upside and the 2nd gear part 631Bb of downside, and the profile of tooth of each gear part 631Ba, 631Bb is different, but is formed as one.1st gear part 631Ba engages with rack member 62B, at the 2nd gear part 631Bb(input sprocket) on hang driving belt 644B described later.
Input gear 631B is positioned at the downside of above-mentioned driven sprocket 34B, and the 1st gear part 631Ba being formed in the upside on its outer peripheral face engages with above-mentioned rack member 62B.In addition, this input gear 631B can be separated with needle bar turntable 31B and rotate.
Rotational support body 65B shown in Figure 16 has: gripper shoe 651B, and it can support carrier 64B rotatably around Z axis; And sprocket wheel 652B(omits diagram in figure 18), it is fixed on the upper surface of gripper shoe 651B, and inputs rotation by above-mentioned pin rotating motor 32B.
Gripper shoe 651B is circular, is positioned at the downside of input gear 631B, is rotatably supported on the shaft-like portion 316B of needle bar turntable 31B.
In addition, above-mentioned carrier 64B has: along the rotating shaft 641B of Z-direction; Minor sprocket 642B, it is fixed on the upper end of rotating shaft 641B; And linkage gear 643B, it is fixed on the bottom of rotating shaft 641B.
Gripper shoe 651B rotatably supports the rotating shaft 641B of carrier 64B, and the minor sprocket of face side configuration thereon 642B, at its lower face side configuration linkage gear 643B.Further, in the upper surface side of gripper shoe 651B, the 2nd gear part 631Bb of minor sprocket 642B and input gear 631B hangs driving belt 644B, and minor sprocket 642B carries out linkage rotation with input gear 631B to identical direction of rotation.Further, if minor sprocket 642B rotates, then the linkage gear 643B linked by rotating shaft 641B also rotates to equidirectional with identical angular metric.
At the central portion of sprocket wheel 652B, there is opening portion, be loosely inserted with input gear 631B.
In addition, sprocket wheel 652B utilizes not shown screw to be fixed on the upper surface of gripper shoe 651B.In addition, above-mentioned minor sprocket 642B is configured in the inner side of the recess that the upper surface of gripper shoe 651B is formed, and utilizes the 2nd gear part 631Bb of driving belt 644B and input gear 631B to link in the downside of sprocket wheel 652B.
In addition, this sprocket wheel 652B utilizes Timing Belt 653B and the drive sprocket 333 be arranged on the pin rotating motor 32 of needle bar rotating mechanism 30B to link.
That is, pin rotating motor 32B is when it drives, and driven sprocket 34B and sprocket wheel 652B is rotated simultaneously, and wherein, driven sprocket 34B makes needle bar turntable 31B rotate, and sprocket wheel 652B makes rotational support body 65B rotate.In addition, the anglec of rotation tolerance inputted from pin rotating motor 32B with rotational support body 65B become the anglec of rotation tolerance that needle bar turntable 31B inputs just in time 1/2 mode, the effective diameter of setting driven sprocket 34B and sprocket wheel 652B.In addition, their rotation direction is set as identical direction.That is, pin rotating motor 32B is when inputting rotational action to needle bar turntable 31B, by the rotational angle of the half of rotational angle inputted to needle bar turntable 31B, inputs to rotational support body 65B.
As noted above, by applying from pin rotating motor 32 to sprocket wheel 652B to rotate, thus the carrier 64B that gripper shoe 651B can be made to support carries out around movement around rotary centerline C.
Output gear 632B is positioned at the downside of gripper shoe 651B, engages with the linkage gear 643B of carrier 64B.In addition, be designed to, ratio and the output gear 632B of input gear 631B and the effective diameter of minor sprocket 642B are consistent with the ratio of the effective diameter of linkage gear 643B.
Thus, under the state not making rotational support body 65B rotate, if input the rotation of predetermined angular to input gear 631B, then output gear 632B reverse rotation direction rotates with identical angle.
In addition, as shown in figure 18, above-mentioned action component 16B at an upper portion thereof one side forms rack tooth, engages with output gear 632B.In addition, action component 16B is supported on the groove portion 311Ba of the top 311B of needle bar turntable 31B, can slide along the circumscribed tangential direction of output gear 632B.
Solenoid 61B can make rack member 62B stop 3 positions, when making rack member 62B stop at each position, the lug boss 161B of action component 16B must be made to stop at each position of above-mentioned P1 ~ P3.
On the other hand, action component 16B is mounted in and carries out when making on the needle bar turntable 31B of rotational action, but the solenoid 61B as drive source that the position for carrying out this action component 16B switches, be fixed on sewing machine stand 101.Therefore, if carry out the rotational action of needle bar turntable 31B, then the input gear 631B engaged with rack member 62B cannot rotate together with needle bar turntable 31, and its result relatively carries out rotational action between needle bar turntable 31B and input gear 631B.
For the differential transmission mechanism 63B in needle bar side, even if it is poor to produce relative rotational angle due to the rotational action of needle bar turntable 31B between this needle bar turntable 31B and input gear 631B, also action component 16B can be remained unchanged relative to the position of needle bar turntable 31B.
Below, based on Figure 19 (A) ~ Figure 19 (C), the operating state of the differential transmission mechanism 63B in needle bar side during rotational action to needle bar turntable 31B is described.
Here, needle bar turntable 31B is made to carry out 180 ° of situations of rotating clockwise under being illustrated the state stopped at solenoid 61B.
First, as shown in Figure 19 (A), if needle bar turntable 31B applies 180 ° of rotations clockwise by pin rotating motor 32B, then apply 90 ° of rotations by sprocket wheel 652B to rotational support body 65B along equidirectional.Thus, minor sprocket 642B carry out clockwise 90 ° around movement.Now, because the input gear 631B of minor sprocket 642B and halted state utilizes driving belt 644B to link, so minor sprocket 642B self carries out the rotation of (diameter of the diameter/minor sprocket of input gear 631B) × 90 ° counterclockwise.
Thus, as shown in Figure 19 (B), linkage gear 643B carries out identical with minor sprocket 642B around mobile and rotate.Its result, with the output gear 632B that linkage gear 643B engages be applied in linkage gear 643B around mobile corresponding clockwise rotation (=90 °) and the clockwise rotation (=90 °) that utilizes the rotation of linkage gear 643B and carry out, output gear 632B carries out the rotation of 180 ° clockwise.
That is, when with needle bar turntable 31B for benchmark, input gear 631B becomes and relatively rotates the state of 180 ° counterclockwise relative to needle bar turntable 31B, but output gear 632B becomes the state not producing rotation relative to needle bar turntable 31B.
Its result, as shown in Figure 19 (C), owing to also not producing the relative angle change between output gear 632B and action component 16B, so on needle bar turntable 31B, action component 16B does not move, this lug boss 161B can maintain fixed position.
In addition, even if solenoid 61B action in the rotational action of needle bar turntable 31B, when making input gear 631B rotate, due to same as described above, so can be corresponding with the operating position of solenoid 61B, the lug boss 161B of action component 16B be located in position.
[container mechanism]
As shown in Figure 20 and Figure 21, configure a pair container mechanism 800A, 800B.Two container mechanisms 800A, 800B, wherein one relative under another state of revolving turnback across center line C(pivot) and balanced configuration.That is, the horizontal container 801,801 on a pair still pedestal 804,804 is supported on respectively, across center line C(pivot under the state of revolving turnback each other) and balanced configuration.
Container mechanism 800A, 800B mounting is arranged on the upper surface of the board mounting 131 of still turntable 130, in Figure 20, Figure 21, omit diagram by the oil feed pump 840(of still 801, still pedestal 804, spline parts 805, turned parts 806, torque-transmitting mechanisms 810, turned parts mechanism 820, cutter mechanism 830, oil supply mechanism) unit that forms structure, this unit structure is identical with the container mechanism 800 illustrated by the first embodiment above.
Each horizontal container 801,801 rotates to equidirectional, can catch the interval configuration of reaching the standard grade respectively from 2 suture needles 11,11.
[differential transmission mechanism]
Differential transmission mechanism 400B becomes the structure of power transfering part 450B, namely, can by rotary power portion 410B to 2 input side sprocket wheels 822 input torque respectively, these 2 input side sprocket wheels 822 are for transmitting the moment of torsion of rotation respectively to 2 horizontal containers 801,801, in addition structure and spinning movement portion 420, differential attachment portion 430 and rotation linkage portion 440 are the structure identical with differential transmission mechanism 400.That is, each container mechanism 800A, 800B has the link turned parts driving shaft 821 of turned parts 806 and the still axle (not shown) of support level still 801 respectively.
Therefore, here, only the power transfering part 450B of rotary power portion 410B is described.
Power transfering part 450B has: Timing Belt 417B, it forms tooth on both faces, the tooth within it formed on the surface, engages with 2 the input side sprocket wheels 822 be rotatably supported on board mounting 131, further, the tooth its outer surface formed engages with outlet side sprocket wheel 416; And jockey pulley 418B, it applies tension force to this Timing Belt 417B.
If outlet side sprocket wheel 416 rotates, then the Timing Belt 417B of this double cog transmits constant speed rotation in reverse direction to each input side sprocket wheel 822,822 and turned parts driving shaft 821,821.Therefore, need to reversely rotate with the still drive motor 401 in the rotary power portion 410 in above-mentioned 1st embodiment and still drive motor 401 is driven.
In addition, also can replace this Timing Belt 417B and utilize gear to link.Therefore, using Timing Belt 417B or replace the gear of Timing Belt as union body.
[the making action of Sewing machines]
The control device 110B of the Sewing machines shown in Figure 22 works as the control unit of making making control performed according to tailoring pattern formation TWICE STITCH, the solenoid 61B carrying out the switching of needle bar 12B, 12B connects this point via not shown interface and drive circuit 61Ba and CPU111B, different from the control system of above-mentioned Sewing machines 100.
Based on the flow chart of Figure 24, the action of making forming TWICE STITCH according to the tailoring pattern of Figure 23 is described.
First, as prerequisite, the control device 110B of Sewing machines preserves the data of the position coordinates of the tailoring pattern of an expression suture needle 11 in its data storage 114B, according to this position coordinate data, calculate for making a suture needle 11 fall the X-axis motor 102c of pin and the drive actions amount (step S21) of Y-axis motor 102d to the needle downing position of every pin.
In addition, according to the X-axis motor 102c of every pin and the drive actions amount data of Y-axis motor 102d, that obtains every pin makes direction of advance, computing is carried out to the anglec of rotation of needle bar 12B, 12B and still 801,801, to make needle bar 12B, 12B and still 801,801 along the direction orthogonal with direction of advance arrangement (step S23).
Then, sewing machine electromotor 21 is driven, start to make, for each pin, X-axis motor 102c and Y-axis motor 102d is driven, the direction of making along regulation is made, and, for each pin, each pin rotating motor 32 and still turning motor 402 are controlled, to make needle bar 12B, 12B and still 801,801 with predetermined towards arrangement (step S25).
In addition, when current sewing position is some in the fixed summit A1 ~ A4 of tailoring pattern (step S27), the position of solenoid 61B is controlled, so that (step S29) is removed in the maintenance of bolt lock mechanism 50B to the needle bar 12B made carrying out inner side.
Thus, the needle bar 12B only becoming outside carries out making (step S31).Namely, in midway, each pin rotating motor 32 and still turning motor 402 are driven, carry out 90 ° of rotations, single needle-shaped is utilized to become the stitching in bight, then, the position of solenoid 61B is controlled, again to utilize bolt lock mechanism 50B, the needle bar 12B relieving maintenance is kept (step S33).
Then, to whether the final pin reached in tailoring pattern judges (step S35), when carrying out making and reaching final pin, the driving of all motor being stopped, terminating to make.In addition, when not yet reaching final pin, returning step S5, proceeding to make.
[effect of the 3rd embodiment]
In above-mentioned Sewing machines, differential transmission mechanism 400B works identically with above-mentioned differential transmission mechanism 400, thus, at 2 needle bar 12B, when 12B rotates, make still 801, 801 synchronously rotate, and, the still drive motor 401 becoming the rotary driving source of still 801 need not be carried on still pedestal 804, the phase difference that each still 801 produces when still pedestal 804 rotates can be prevented, therefore, the lightweight of still turntable 130 can be realized, as still turning motor 402, can use and export little miniature motor, and, the miniaturizations such as the support structure of still turntable 130 can also be made.
In addition, the moment of inertia of still turntable 130 can be reduced, the error of the rotational action of still can be reduced, the rotational action of accurate action control and still 801 at a high speed can be realized.Therefore, the high speed made, the high precision int of formation 2 stitchings can be realized.
In addition, in above-mentioned two-needle sewing machine, as noted above, the differential transmission mechanism 63B in needle bar side of position switching action is transmitted from solenoid 61B to action component 16B, chien shih revolving force at input gear 631B and output gear 632B is reversed and the rotational support body 65B that supports of the carrier 64B transmitted, when needle bar turntable 31B rotates, rotate with the angle of the half of this needle bar turntable 31B, therefore, do not rotate together with needle bar turntable 31 with the input gear 631B that rack member 62B engages, even if when producing rotational angle difference to each other, also can in output gear 632B side, utilize carrier 64B to needle bar turntable 31B equidirectional, rotate with identical rotational angle.Therefore, be mounted in the action component 16B on needle bar turntable 31B, position skew can not be produced due to the rotation of needle bar turntable 31B.
Therefore, even if do not carry solenoid 61B and pin rotating motor 32 on needle bar turntable 31B, also action component 16B can be held in the correct position, correctly can perform maintenance and the releasing of needle bar 12B.
Further, thus, the rotating weight of needle bar turntable 31B can be alleviated, the pin rotating motor 32 carrying out spinning movement need not be made to maximize, just can carry out high speed motion, the high speed made can be realized.The rotating weight of needle bar turntable 31B can be alleviated, the moment of inertia of needle bar turntable 31B can be reduced, high-precision making can be realized.
In addition, due to solenoid need not be carried on needle bar turntable 31B, so there is no need for the particular component such as the collecting ring carrying out power supply supply to this solenoid, the reduction of Sewing machines manufacturing cost and the miniaturization of Sewing machines can be realized.
According to above-mentioned first ~ three embodiment, Sewing machines has: needle bar 12,12B, and it keeps suture needle, moves up and down; Still 801, it catches reaching the standard grade, and by spinning movement, will reach the standard grade is wound around with rolling off the production line; Sewing machine electromotor 21, it becomes the drive source moved up and down of needle bar; Still drive motor 401, it becomes for making still catch the rotary driving source of reaching the standard grade; Needle bar rotating mechanism 30,30B, it makes needle bar rotate around the regulation center line parallel with this needle bar; Still turntable 130, it carries still, is supported on sewing machine stand 101, can rotate around the center line identical with above-mentioned needle bar; Pin rotating motor 32,32B, it becomes the drive source of needle bar rotational action; And still rotating motor 402, it becomes the drive source of the rotational action of still turntable, there is differential transmission mechanism 400,400A, 400B in this Sewing machines, this differential transmission mechanism 400,400A, 400B have the power shaft 411 from still drive motor to still and output shaft 412 that transmit power from, in differential transmission mechanism, power shaft and output shaft are configured on the rotation centerline of needle bar, and have: carriage 431, and it rotates around power shaft and output shaft; Carrier 434,434A, it is supported on carriage rotationally, and by this rotation, transmits revolving force each other between described power shaft and output shaft; Slave unit 422,422A, it is arranged in any one in still turntable or described carriage, from described still rotating motor input rotatory force; And rotate link gear 440,440A, it utilizes the rotatory force from slave unit input, still turntable and carriage are rotated to equidirectional when observing from described sewing machine stand, and described still turntable 130 is rotated with the amount of spin of two times of described carriage 431.
In addition, describe in the above-described embodiment: rotate link gear and use gear mechanism, this gear mechanism is made up of the gear be separately positioned on still turntable and sewing machine stand or carriage and sewing machine stand.
In addition, according to above-mentioned embodiment, rotation link gear also can be made to have: fixed gear 441, it is fixed on sewing machine stand; Driven gear 445, it is fixed on carriage; Back shaft 442, it is supported on still turntable rotationally; 1st gear 443, it is fixed on back shaft, engages with fixed gear; And the 2nd gear 444, it is fixed on back shaft, engages with driven gear.
In addition, according to above-mentioned embodiment, sewing machine electromotor and still drive motor also can be made to share 1 motor.
According to this structure, when being configured to make sewing machine electromotor and drive motor share 1 motor, the number of motor can be reduced, realizing the productive raising of Sewing machines.
In addition, according to above-mentioned embodiment, pin rotating motor and still turning motor is made to share 1 motor.
According to this structure, when being configured to make pin rotating motor and still turning motor share 1 motor, the number of motor can being reduced, realize the productive raising of Sewing machines.
In addition, the Synchronization Control of each motor can be implemented, make the structure of control circuit etc. simpler.
In addition, according to above-mentioned embodiment, Sewing machines 100 is single needle sewing machines, has: travel mechanism 102, and it can make sewn object move to any direction in the plane vertical with rotary centerline; And make control unit (110,110B), it is utilizing travel mechanism to make before sewn object moves, when the moving direction of this sewn object is included in predetermined adding in the generation scope of coiling mark, in the mode making moving direction depart from this scope, above-mentioned pin rotating motor (32,32B) and above-mentioned still turning motor 402 are driven.
According to this structure, have in single needle sewing machine and make control unit, it is utilizing travel mechanism to make before sewn object moves, when the moving direction of this sewn object is included in predetermined adding in the generation scope of coiling mark, in the mode making moving direction depart from this scope, rotating motor is driven, therefore, in the making of the pin that carries out to optional position falling, the generation adding coiling mark can be prevented.
In addition, according to above-mentioned embodiment, Sewing machines is two-needle sewing machine, has: still rotary transfer machine, and it is mounted on turntable, rotates from output shaft to 2 still transmission; Travel mechanism 102, it can make sewn object in the plane vertical with the rotary centerline be positioned in the middle of 2 suture needles, moves along any direction; And make control unit (110,110B), it is when utilizing travel mechanism to make sewn object move, pin rotating motor (32,32B) and still turning motor 402 are controlled, to make 2 suture needles and above-mentioned 2 stills respectively in the plane vertical with rotary centerline, arrange along the direction orthogonal with the moving direction of sewn object.
According to said structure, in two-needle sewing machine, when utilizing travel mechanism to make sewn object move, may be controlled to make 2 suture needles and 2 stills to arrange along the direction orthogonal with the moving direction of sewn object respectively, can be parallel and maintain certain interval and form 2 stitchings.
In addition, in the above-described embodiment, show the Sewing machines with the structure of rotating linkage portion 440 and actuating mechanism portion 430, but the present invention also can implement in the Sewing machines without rotation linkage portion 440 and actuating mechanism portion 430.Namely, also the structure by driving shaft 411 and driven shaft 412 integration can be adopted, or by the structure of turned parts driving shaft 821 and driven shaft 412 integration, or turned parts driving shaft 821 and driving shaft 411 are directly combined or the structure of integration, or by structure that turned parts driving shaft 821 directly links with the output shaft 401A of still drive motor 401.

Claims (7)

1. a Sewing machines, it has:
Needle bar, it keeps suture needle, can be arranged on up or down on Sewing machines arm;
Sewing machine electromotor, it makes described needle bar move up and down;
Needle bar rotating mechanism, it utilizes the action of pin rotating motor, and described needle bar is rotated around the center line parallel with described needle bar;
Still, it keeps rolling off the production line, and catches reaching the standard grade from suture needle by spinning movement, makes to reach the standard grade to be wound around with rolling off the production line;
Still turntable, it carries described still, is supported on sewing machine stand, can rotate around described center line;
Still drive motor, it makes described still rotate; And
Still turning motor, it makes described still turntable rotate,
The feature of this Sewing machines is,
Described Sewing machines has differential transmission mechanism, and this differential transmission mechanism has the power shaft linked with described still drive motor and the output shaft linked with described still, and described power shaft and described output shaft are all configured on described center line,
Described differential transmission mechanism has:
Differential attachment portion, it has the carriage being rotatably supported on the surrounding of described power shaft and output shaft relative to described still turntable and the carrier be rotatably supported on described carriage, by the rotation of carrier, thus by the rotation of described power shaft to output shaft transmission;
Slave unit, it is arranged on in described still turntable or described carriage, from described still turning motor input rotatory force; And
Rotate link gear, it utilizes the rotatory force inputted from described slave unit, and described still turntable and described carriage are rotated to equidirectional, and, described still turntable is rotated with the amount of spin of two of described carriage times.
2. Sewing machines according to claim 1, is characterized in that,
Described rotation link gear has gear mechanism, and this gear mechanism has the gear on that is separately positioned in described still turntable and described carriage and on described sewing machine stand.
3. Sewing machines according to claim 1, is characterized in that,
Described rotation link gear has:
Fixed gear, it is fixed on described sewing machine stand;
Driven gear, it is fixed on described carriage;
Back shaft, it is supported on described still turntable rotationally;
1st gear, it is fixed on described back shaft, engages with described fixed gear; And
2nd gear, it is fixed on described back shaft, engages with described driven gear.
4. Sewing machines according to any one of claim 1 to 3, is characterized in that,
Utilize the structure that described sewing machine electromotor is linked via Poewr transmission mechanism and described power shaft, or making described still drive motor via Poewr transmission mechanism and the structure for driving the upper axle of described needle bar to link, making described sewing machine electromotor and described still drive motor share 1 motor.
5. Sewing machines according to any one of claim 1 to 3, is characterized in that,
Utilize the structure that described still turning motor is linked via Poewr transmission mechanism and described needle bar rotating mechanism, or the structure making described pin rotating motor link via Poewr transmission mechanism and described still turntable, makes described pin rotating motor and described still turning motor share 1 motor.
6. Sewing machines according to any one of claim 1 to 3, is characterized in that,
Described Sewing machines is single needle sewing machine, has:
Travel mechanism, it can make sewn object move along any direction in the plane orthogonal with described center line; And
Make control unit, it is before utilizing described travel mechanism to make sewn object move, when the moving direction of this sewn object is included in predetermined adding in the generation scope of coiling mark, in the mode making described moving direction depart from this scope, described pin rotating motor and described still turning motor are driven.
7. Sewing machines according to any one of claim 1 to 3, is characterized in that,
Described Sewing machines is two-needle sewing machine, has:
Still rotary transfer machine, it is mounted on described still turntable, rotates from described output shaft to 2 still transmission;
Travel mechanism, it can make sewn object in the plane orthogonal with the described center line be positioned in the middle of 2 suture needles, moves along any direction; And
Make control unit, it is when utilizing described travel mechanism to make sewn object move, described pin rotating motor and described still turning motor are controlled, arranges along the direction orthogonal with the moving direction of described sewn object in the plane orthogonal with described center line respectively to make described 2 suture needles and described 2 stills.
CN201210574935.1A 2011-12-26 2012-12-26 Sewing machines Active CN103173942B (en)

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