CN1372029A

CN1372029A - Sewing machine for sewing bottonhole

Info

Publication number: CN1372029A
Application number: CN02105278A
Authority: CN
Inventors: 石井一明; 春日俊明; 绪方孝宏
Original assignee: Juki Corp
Current assignee: Juki Corp
Priority date: 2001-02-23
Filing date: 2002-02-25
Publication date: 2002-10-02
Anticipated expiration: 2022-02-25
Also published as: KR20020069133A; CN1213184C; CZ2002666A3; CZ304418B6; KR100843364B1; CZ303869B6

Abstract

A buttonholing sewing machine is characterized by comprising the parts of: a needle thread cutter with needle thread cutting scissors for cutting and holding a needle thread; a bobbin thread cutter with bobbin thread cutting scissors for cutting and holding a bobbin thread; solenoids for releasing the holding of the needle thread and the bobbin thread; a control panel for inputting and setting the form of buttonholing and the starting position and ending position of sewing; the RAM for storing data inputted from the control panel; and a CPU. The CPU reads out the data in the RAM, relatively moves a needle and a presser means by a Y feeding drive means and a needle oscillating mechanism, and after sewing from the starting position to the ending position, operates and controls the needle thread cutter and the bobbin thread cutter to cut, hold and release the hold of the needle thread and the bobbin thread. The buttonholing sewing machine satisfies requests for various methods of sewing and designs by making the drive source for a thread cutter independent from other mechanisms.

Description

Sewing machine for binding buttonhole

Technical field

The present invention relates to a kind of sewing machine for binding buttonhole.

Background technology

A kind of buttonhole opening that forms on sewn object, the sewing machine for binding buttonhole that carries out eyelet simultaneously around it is widely known by the people.Sewing machine for binding buttonhole is will be carried to the direction of regulation by the sewn object that presser feet is fixed on one side by cloth-feeding device, form by upper thread, bottom line hook and connect and the stitch that constitute on one side.

On described Sewing machines, be provided with the cutting facility of having cut off upper thread and bottom line behind the stitch respectively with scissors having formed.Face in the past, bottom line clipping apparatus by constituting interlock to the operation of lever and with the mechanism that promotes presser feet, are cut off suture with scissors.After cutting off, former state ground keeps upper thread and bottom line by the state of scissors clamping, thereafter make beginning the time, by with the mechanical interlock of cloth-feeding device, open scissors in certain moment, suture ends is twisted in naturally makes in the stitch.That is, sewing machine for binding buttonhole in the past, be cloth-feeding plate by making cutting facility and cloth-feeding device making the mobile formation interlock of beginning back to assigned position, remove the clamping of opposite, bottom line.

But, described Sewing machines, when with regulation make different position, starting position when finishing to make, cloth-feeding plate and cloth-feeding device can not mechanically revert to the origin-location.When beginning to carry out next step when making under this state, it is constantly punctual to form opening of scissors, can not control the broken string length that remains on the cloth, suture ends fitly can not be twisted in the defective mode in the stitch.

In addition, if for example can emission surface, cut off upper thread and bottom line on the work feed position of bottom line, then owing to be released at the rising moment of presser feet upper thread and bottom line, so can cause the clamping of suture bad, as the feature of this Sewing machines, do not form the state that is held if exist suture, then line end can be deviate from from eedle, cause to begin to carry out eyelet, can not carry out the problem of next step eyelet.

For this reason, in described Sewing machines in the past, exist the problem that must make the sewing finishing position consistent with making the starting position.

And, people know in recent years a kind of electronically controlled sewing machine for binding buttonhole, though this Sewing machines is provided with the multiple transformable shape pattern of making, but owing to handle for the line that begins eyelet reliably as described above, must be sewn into and make the starting position, so after finishing the making of required pattern, also must carry out making up to making the invalid of starting position, therefore, exist the stitch price that reduces commodity not attractive in appearance, the problem that has prolonged the eyelet cycle simultaneously owing to sewings.

And, at different object to be sewn, better make effect in order to reach, need before eyelet, form buttonhole opening (first otch) earlier sometimes.In addition, when a kind of length when the buttonhole that will form is arranged greater than the incision length of the cloth otch that forms buttonhole,, carry out the Sewing machines that cloth otch repeatedly moves on one side on one side carry cloth by cloth-feeding device.

And, when carrying out making of first otch,, can not form stitch so make when beginning next time because when in order to carry out the cloth otch when carrying cloth, scissors forms the open configuration that discharges suture, can not clamp suture by such Sewing machines.Therefore, even wish to carry out making of first otch, also must after finishing eyelet, form the buttonhole opening again.

In addition, make the situations such as layout of thing according to difference, need carry out the trimming action under presser feet is pushed down the state of cloth even have, it is impossible that this also becomes.

Therefore, because the cutting facility of sewing machine for binding buttonhole in the past and other device form interlock,, can not fully satisfy diversified method of sewing and design needs so be subjected to restriction in many ways actuation time etc.

The purpose of this invention is to provide a kind of and other devices mutually independently, compare, can satisfy the sewing machine for binding buttonhole of diversified method of sewing and designing requirement with Sewing machines in the past.

Summary of the invention

In order to solve the above problems, the present invention's 1 sewing machine for binding buttonhole, for example as Fig. 1～shown in Figure 21, comprise: pass the eedle (9) that upper thread and the rotation by a main shaft (go up spool 6) move up and down with respect to sewn object, with the below that is positioned at sewn object and supply with the rotating shuttle (12) of bottom line, with the foot device of pushing down sewn object (presser feet 15, cloth-feeding plate 14), with the mobile device (Y work feed drive unit 13 and needle vibrating mechanism) that eedle and foot device is relatively moved for stitch is made in formation around the buttonhole opening, with have the upper thread of cutting off upper thread and clamping the upper thread after cutting off and cut the upper thread clipping apparatus of (80) (upper thread clipping apparatus 70), with have the bottom line of cutting off bottom line and clamping the bottom line of being cut off and cut the bottom line clipping apparatus of (52) (bottom line clipping apparatus 50), it is characterized in that, have: carry out cutting releasing respectively and cut the movement device (solenoid 76 of releasing the clamping of bottom line to the clamping of upper thread and by bottom line by upper thread, 66), with input as the bight shape of bight data with make the input unit (guidance panel 100) of starting position and sewing finishing position, with the storage device of preserving by the bight data of input unit input (RAM113), with from storage device, read the bight data and make eedle and foot device carry out relative move and carrying out from making the starting position after the making of sewing finishing position by mobile device, control upper thread clipping apparatus and the action of bottom line clipping apparatus make it carry out cutting off of upper thread and bottom line respectively, the control device of clamping and release movement (CPU111).

1 described sewing machine for binding buttonhole according to the present invention, owing to have and cut release by upper thread respectively and cut the movement device of release to the clamping of bottom line to the clamping of upper thread with by bottom line, so constitute the release movement of carrying out upper thread, bottom line by drive source independently, broken away from the restriction that is subjected to cloth-feeding device as before.Therefore can set by input unit and make starting position and sewing finishing position, and under the control of control device, form the stitch of making starting position and sewing finishing position diverse location as the present invention's 1.

Thereby saved just in order to make the sewing finishing position and to make the starting position consistent and invalid the making of carrying out can be improved aesthetic property thus and be improved sewing quality, also can shorten stitch cycle.

In addition, owing to make the drive source that discharges suture be independent of cloth-feeding device in this wise, so on one side can carry out the first opening that making before one side work feed forms the buttonhole opening and make.

As mentioned above, 1 described sewing machine for binding buttonhole according to the present invention can fully be applicable to various design and method of sewing.

The present invention's 2 sewing machine for binding buttonhole, be based on the present invention's 1 described sewing machine for binding buttonhole, it is characterized in that: can set moment respectively by input unit by upper thread is cut and bottom line is cut emission surface, bottom line, control device is according to the moment drive actions device that sets, makes its emission surface, bottom line immediately after making beginning.

2 described sewing machine for binding buttonhole according to the present invention, be on the basis of the present invention's 1 invention effect, because under the control of control device, discharge upper thread, bottom line respectively at the time point of importing by input unit, so can be corresponding to sewing condition, the for example length of the kind of cloth and suture, buttonhole lock seaming and width etc. fitly are hidden in the end of a thread naturally and form bight in the stitch, can further improve sewing quality.

Here, as the concrete input value of time point, be pointer number and time, or the distance of work feed etc.

The present invention's 3 sewing machine for binding buttonhole, be based on the present invention's 2 described sewing machine for binding buttonhole, it is characterized in that: have the checkout gear (TG generator 123) that detects main axis rotation speed, the control device correspondence is reasonably revised and is controlled the release time that sets by input unit and put and release upper thread and bottom line by the detected main axis rotation speed of checkout gear.

3 described sewing machine for binding buttonhole according to the present invention, when making, under the control of control device, point release time that sets by input unit is reasonably revised and controlled to the rotating speed of corresponding main shaft, by discharging upper thread and bottom line, discharging suture, can further improve sewing quality corresponding to the actual moment of making situation.

Owing to can freely set as the present invention's 1～3 and make starting position and sewing finishing position, can be set in the stitch formation position on the presser feet arbitrarily.

Therefore, the present invention's 4 sewing machine for binding buttonhole, be based on any described sewing machine for binding buttonhole among the present invention 1～3, it is characterized in that: foot device, have the presser feet (15,15 ') of pushing down sewn object and can surrounding bight place that is formed on the sewn object, can set the bight position of relative presser feet by input unit.

According to the present invention's 4 described sewing machine for binding buttonhole, because can be according to the sewing position of changes such as the size of presser feet, the state of cloth (sewn object) on presser feet, so can the suitable state of making of corresponding actual state adjustment.For example, the next door that is used in the bight of avoiding forming exists the flanging or the joint-cutting of cloth, makes the situation of presser feet compacting cloth.

The present invention's 5 sewing machine for binding buttonhole, be based on the present invention 1～3 in any described sewing machine for binding buttonhole, it is characterized in that: foot device, have to push down sewn object and can surround and comprise a plurality of presser feets (15 ') of making the position that carry out bight that are formed on the sewn object, can set a plurality of positions of making by input unit, and can set and a plurality of relevant data of each sewing position of making the position, control device is under the state that does not promote presser feet, when eedle and foot device are relatively moved, carry out making making continuously on the position a plurality of.

According to the present invention's 5 described sewing machine for binding buttonhole, can surround a plurality of big presser feets of making the position owing to use, can under the state that does not promote presser feet, carry out making making continuously on the position a plurality of, enhance productivity so can shorten stitch cycle.

Here, do " data relevant with each sewing position " can be the positions of directly making, and also can be the sewing positions for initial stitch input, can import the distance of initial relatively stitch or the interval of adjacent stitches for the stitch after the 2nd.

In the present invention's 5 sewing machine for binding buttonhole, do " comprising a plurality of positions of making of carrying out bight ", promptly can as shirt or the preceding of overcoat buckle, form identical bight continuously, also can be combined a kind of buttonhole stitch and embroidery pattern.

In addition, the present invention's 6 sewing machine for binding buttonhole, be in the present invention's 4 described sewing machine for binding buttonhole, it is characterized in that: the pattern data that can set the different bights that comprise a plurality of different bight pattern datas by input unit, according to the bight data of different pattern, form multiple different bight continuously.

According to the present invention's 6 described sewing machine for binding buttonhole, owing to can form the bight of different pattern continuously, so applicable to multifarious design.

Here, as " the bight data of different pattern ", promptly can a data constitute by multiple bight stitch, also can be on the basis of bight pattern, comprise the tailoring pattern different, for example the drawing or the embroidery pattern of literal etc. with bight.

Description of drawings

Fig. 1 is the stereogram of expression as the sewing machine for binding buttonhole outward appearance of one embodiment of the invention.

Fig. 2 is the cloth-feeding device of sewing machine for binding buttonhole of main presentation graphs 1 and the perspective view of eedle elevating mechanism.

Fig. 3 is the eedle elevating mechanism of sewing machine for binding buttonhole of main presentation graphs 1 and the perspective view of balancing point device.

Fig. 4 is the vertical view of expression upper thread clipping apparatus.

Fig. 5 is the exploded perspective view of expression upper thread clipping apparatus and bottom line clipping apparatus.

Fig. 6 is the side view of expression upper thread clipping apparatus.

Fig. 7 is the schematic diagram for the action that upper thread clipping apparatus and bottom line clipping apparatus are described.

Fig. 8 is the upward view of expression bottom line clipping apparatus.

Fig. 9 is the block diagram of control circuit of the sewing machine for binding buttonhole of presentation graphs 1.

Figure 10 is the front view of guidance panel.

Figure 11 is the tables of data of the parameter that expression can be by guidance panel input.

Figure 12 is the key diagram of the explanation bight corresponding with each data item.

Figure 13 is that the different key diagrams of making starting position and sewing finishing position is set in explanation.

Figure 14 is the schematic diagram that is illustrated under the situation of using large-scale presser feet, and (a) the expression situation of making 2 buttonholes continuously (b) is illustrated in the situation that any desired location of relative presser feet is made.

Figure 15 explanation is at the stereogram of the advantage that any desired location of presser feet is made.

Figure 16 is the tables of data that the corresponding rotating speed of expression compensated the moment of removing clamping upper thread and bottom line.

Figure 17 is a data drawing list of representing to make continuously the difformity buttonhole.

Figure 18 is the overview flow chart that bight is carried out in expression.

Figure 19 is the flow chart of making processing among Figure 18.

Figure 20 is illustrated in the flow chart that the release of the upper thread of making when beginning, bottom line is handled.

Figure 21 is the flow chart that the processing of difformity buttonhole is made in expression continuously.

Figure 22 is the vertical view of upper thread clipping apparatus in the sewing machine for binding buttonhole of expression embodiment 2.

Figure 23 is the exploded perspective view of the upper thread clipping apparatus of Figure 22.

Figure 24 is the vertical view of bottom line clipping apparatus in the sewing machine for binding buttonhole of expression embodiment 2.

Figure 25 is the exploded perspective view of the disconnected device of end trimming of Figure 24.

Among the figure: the 1-sewing machine for binding buttonhole, the 5-electrical motor of sewing machine, the last axle of 6-(main shaft), 9-eedle, the 12-rotating shuttle, 13-Y work feed drive unit, 15,15 '-presser feet, 50,230-bottom line clipping apparatus, the 52-bottom line is cut, 66-solenoid (movement device), 70,200-upper thread clipping apparatus, 76-solenoid (movement device), the 80-upper thread is cut, the 100-guidance panel, 110-control circuit, 111-CPU (control device), 112-ROM, 113-RAM (storage device), 122-eedle vertex position sensor, 123-TG generator (checkout gear).

The specific embodiment

Below, with reference to accompanying drawing embodiments of the invention are described in detail.

Embodiment 1

Sewing machine for binding buttonhole 1 as one embodiment of the invention is made of support portion 2, vertical body 3 and transverse arm portion 4.This Sewing machines 1 has: the eedle 9 that carries out the action of lifting action and left and right sides balancing point, push down the presser feet 15 of cloth (sewn object), at downside fixedly cloth and the cloth-feeding plate 14 that on cloth feeding direction (Y direction), seesaws, cut off the upper thread clipping apparatus 70 (Fig. 4) of upper thread at the upside of presser feet 15, below needle plate 55, cut off the bottom line clipping apparatus 50 (Fig. 8) of bottom line, cut the cloth cutting knife 16 that cloth forms the buttonhole opening, as the guidance panel 100 (Figure 10) of the input unit of input various setting datas etc. and the control circuit 110 (Fig. 9) etc. of controlling this sewing machine for binding buttonhole 1.

Constitute the presser feet 15 and the cloth-feeding plate 14 of cloth-pressing device of the present invention, cloth is clamped between the two, simultaneously,, carry out the cloth conveying of direction (Y direction) forwards, backwards by the driving of Y work feed drive unit 13.As shown in Figure 2, presser feet 15 is fixed on the linking arm 24 that is connected with work feed parts 23, and cloth-feeding plate 14 directly is connected on the work feed parts 23.These work feed parts 23 are fixed on the conveying axis 22 with rack rails 22a, when 20 rotations of Y work feed pulse motor, by the driving to pinion 20a, seesaw with presser feet 15 and cloth-feeding plate 14.That is, constitute Y work feed drive unit 13 by Y work feed pulse motor 20, conveying axis 22, work feed parts 23 and linking arm 24.

In addition, as shown in Figure 4, at the front end of linking arm 24, be fixed with closure plate 25 described later, and fixing presser feet 15 in its front side.Presser feet 15 is connected with presser feet rising solenoid 127 (Fig. 9) by depression bar 27 grades, when this solenoid 127 when connecting, form state towards the release cloth of upside, when solenoid is disconnection, towards downside clamp cloth.Owing to constitute technique known, the explanation that the Therefore, omited is detailed with the presser feet 15 of solenoid-activated.

As shown in Figures 2 and 3, the elevating mechanism of lifting eedle 9 is by formations such as last axle (main shaft) 6, electrical motor of sewing machine 5 and bent axle cams 7, convert elevating movement to and shank 8 is given in transmission by the rotation of electrical motor of sewing machine 5 being driven, make eedle 9 carry out elevating movement by bent axle cam 7.Last axle 6 is connected with lower shaft 11 formations by dispose the connecting axle 10 of bevel gear 10a, 10b at upper and lower side, and forms interlocks with the rotating shuttle 12 that is connected on this lower shaft 11.

The needle vibrating mechanism that eedle 9 is swung to the left and right is by eedle 9 is constituted certain baseline as initial point and with the amplitude main needle vibrating mechanism of swinging of regulation, the balancing point amplitude change mechanism that changes this balancing point amplitude and the baseline change mechanism etc. that changes described baseline at left and right directions.

As shown in Figure 3, main needle vibrating mechanism, constitute by shank shaketable 18, balancing point galianconism 49, connecting axle 48, connecting rod 47, balancing point cam link 46, triangular cam 35, gear 42a, 42b etc., drive to triangular cam 35 by the rotation that will go up axle 6, balancing point cam link 46 is swung with the amplitude of regulation, by this swing is conducted to shank shaketable 18, making it is that rotate at the center with fulcrum 18a, constitutes to make eedle 9 carry out the swing of direction to the left and right.Main needle vibrating mechanism, the moment that descends in the first time of eedle 9 makes shank 8 that it is taken on the baseline, makes shank 8 take it to the apart position of the baseline regulation amplitude of oscillation in the moment that descends for the second time.

Amplitude of fluctuation change mechanism by making 41 rotations of balancing point work feed pulse motor, and changes the amplitude of fluctuation of balancing point cam link 46 by connecting rod 36,37 and connecting rod 45, changes the amplitude of fluctuation tolerance of eedle 9 thus.

Baseline change mechanism, by making 40 rotations of baseline work feed pulse motor, making the baseline change is that rotate at the center with connecting rod 43 with fulcrum 43a, changes the fulcrum 44a position of baseline with connecting rod 44.Because fulcrum 44a is the fulcrum of the oscillating motion initial point of decision balancing point cam link 46, so, by the change of fulcrum 44a position, can the initial point of the oscillating motion of balancing point cam link 46 be changed by connecting rod 45, thereby form the change of the balancing point baseline position of eedle 9.

In addition, constitute mobile device of the present invention by above needle vibrating mechanism and described Y work feed drive unit 13.

Near eedle 9, be provided with upper thread clipping apparatus 70 and bottom line clipping apparatus 50.

Below, with reference to Fig. 4～Fig. 7 upper thread clipping apparatus 70 is described.Upper thread clipping apparatus 70 has upper thread and cuts 80, and 80 actions of this scissors are carried out the cutting off of upper thread, clamping and release.As Fig. 4, shown in Figure 5, on the leading section 24a of linking arm 24, be fixed with closure plate 25.

As shown in Figure 5, upper thread clipping apparatus 70 is cut off the upper thread of action and is cut off portion 71 and drive upper thread and cut off the upper thread of portion 71 and cut off drive division 72 and constitute by carrying out upper thread.

Upper thread is cut off portion 71, has switching upper thread freely and cuts 80, supports upper thread and cut 80 support arm 81 and support arm 81 is configured in axial region 82 on its leading section.Bearing 84 constitutes rotating connections with

shaft supporting part

83,83 on being fixed on arm 4 bottoms, and axial region 82 connects bearings 84, and can be free to slide and rotate with respect to bearing 84.

Leading section at axial region 82 is fixed with support arm 81, on the leading section 81a of this support arm 81, is fixing upper thread in the face of presser feet 15 1 sides and is cutting 80.

It is that the movable sword 86 that rotate freely at the center constitutes by the fixed blade 85 (Fig. 4) that is fixed with pressing plate 85a and relative fixed sword 85 with pivot pin 86b that upper thread cuts 80, is being provided with the outstanding flange contact site 86a of face from it on movable sword 86.

Below, upper thread is cut off drive division 72 describe.Upper thread is cut off drive division 72, cuts off upper thread that portion 71 carries out closed action (cutting off the action of upper thread) and cuts closing device and make upper thread cut the 80 upper thread releasing devices formations of opening action (discharging the action of upper thread) by making upper thread cut 80 relative upper threads.

At first, upper thread being cut closing device is described in detail.The base end part (right part) of the lever 87 that can freely sway at fore-and-aft direction is housed on vertical body 3.Connecting an end of extension spring 31 at the pars intermedia of lever 87, the other end of extension spring 31 hangs in the transverse arm portion 4.Extension spring 31 along clockwise direction (opposite direction of the d of arrow shown in Fig. 5) to lever 87 application of forces.In addition, lever 87 also can be by operator's direct control, and the drive unit that drives lever 87 also can be set, and when the operator carries out the operation of button etc., by this drive unit lever 87 is rotated.

Fixing on the base end part of lever 87 towards above roller installation portion 88, in the upper end of roller installation portion 88 roller 89 is set.Rock body 28 is set to be contacted with this roller 89.The base end part of rock body 28 (right part) can be installed in the transverse arm portion 4 freely to rotate around the axle of above-below direction.And, being formed with cam 28a in the back of rock body 28, this cam 28a contacts with roller 89.In addition, the front portion of rock body 28 contacts with the top of handler 29.The top of handler 29 is fixed on the rearward end of described axial region 82.Between handler 29 and bearing portion 84, be provided with the compression spring 30 that is enclosed within on the axial region 82.Compression spring 30 and handler 29 are together with axial region 82 application of force rearward.

At the pars intermedia of lever 87, connecting the right part of the cam part 32 that can freely rotate around the axle of fore-and-aft direction.The left part of cam part 32 is rotated and is connected the pars intermedia that bottom line is cut off bar 33 freely.Bottom line is cut off bar 33 and is provided with certain-length along the vertical direction, and its underpart is in the inside of support portion 2.The upper end that bottom line is cut off bar 33 is configured on the vertical body 3 and can freely rotates along the axle of fore-and-aft direction.Cut off at bottom line on the pars intermedia of bar 33 and fixing pressing body 34, the leading section 34a of pressing body 34 extends to right, is provided with locked part 73 on the next door of its leading section 34a.

Locked part 73 has supporter 73a, buckling body 73b and compression spring 73d (Fig. 7).It is hook-shaped shape that supporter 73a is formed its section, is screwed on the base portion 24a of linking arm.On supporter 35a, rotate and connecting buckling body 73b freely.Form on the leading section of buckling body 73b towards above the crooked 73c of padlock portion.Compression spring 73d is housed between supporter 73a and buckling body 73b, and the relative supporter 73a of compression spring 73d is to the buckling body 73b application of force upward.

Here, the leading section 34a of pressing body 34 is near the upside of buckling body 73b.And when bottom line was cut off bar 33 and carried out clockwise rotating on the front view, the spring force that the leading section 34a of pressing body 34 overcomes compression spring 73d was pressed to the below to buckling body 73b.

On the other hand, the pars intermedia at handler 29 is provided with roller 74.And an end of hooking extension spring 75 above near the roller 74 of handler 29, the other end of extension spring 75 is hooked on bottom line and cuts off on the upper end of bar 33.The clockwise direction application of force of 75 pairs of handlers 29 of extension spring on front view.

And roller 74 contacts with

cam part

32a, 32b on the right part that is formed on cam part 32.Like this, can limit handler 29 to clockwise rotation.Form bight 32c on cam part 32 right-hand members by cam part 32a and cam part 32b here.And, on the bottom of handler 29, be provided with forwards outstanding padlock pawl 29a.This padlock pawl 29a can be buckled in the 35c of padlock portion of buckling body 73b.

Below, the upper thread releasing device that the release upper thread is cut describes.The upper thread releasing device is cut 80 upper thread releasing driving device and is made upper thread cut 80 upper threads that move to the 1st position of readiness from the 2nd position of readiness after having finished the trimming action and cut mobile device and constitute by opening upper thread.

The upper thread releasing driving device has the extension spring 78 of the solenoid 76 as movement device of the present invention, the lever arm that can rotate 77 that is installed in pars intermedia on the described support arm 81 and pulling lever arm 77.

Solenoid 76 is fixed on the bottom of transverse arm portion 4, moving before and after the solenoid-activated bar 76a that it forwards extends out can carry out.One end of the front end engagement lever arm 77 of solenoid-activated bar 76a.Hang with an end of extension spring 78 on lever arm 77, the other end of extension spring 78 hangs in the sewing machine stand.And an end of 78 pairs of lever arms 77 of extension spring and solenoid-activated bar 76a be the application of force rearward together.Be formed with in the other end of lever arm 77 and open scissors flange surface 77a to right-hand extension.Open the left that scissors flange surface 77a is configured in flange contact site 86a.Form the 1st flange surface 77b and the 2nd flange surface 77c in the right part of opening scissors flange surface 77a.

In addition, open scissors 80 by the upper thread releasing driving device.Cut 80 when being closure state at upper thread, when solenoid 76 when off-state changes on-state into, the spring force that solenoid-activated bar 76a overcomes extension spring 78 is pushed to the place ahead.Like this, lever arm 77 is rotated to counter-clockwise direction (direction of arrow f among Fig. 5).Along with the rotation of lever arm 77, the 2nd flange surface 77c is contacted with flange contact site 86a, when lever arm 77 further rotated, the 1st flange surface 77b formed with contact site 86a with flange surface and contacts.Like this, by promoting flange contact site 86a, make movable sword 86 rotations (direction of the arrow g among Fig. 4) open upper thread and cut 80 by opening scissors flange surface 77a.When solenoid 76 was off-state, though extension spring 78 and solenoid-activated bar 76a revert to previous status, upper thread was cut 80 and is also kept open state.

Upper thread is cut mobile device, has solenoid 79, the attaching parts 90 that are connected with the solenoid-activated bar 79a front end of solenoid 79, is connected pressing body 91 and extension spring 75 on the attaching parts 90.

Solenoid 79 is fixed on the top (Fig. 7) of support portion 2.Solenoid-activated bar 79a gives prominence on the right side of the main body of solenoid 79, and moving of can advancing and retreat.One end of attaching parts 90 can be rotated up and down on the leading section that is connected solenoid-activated bar 79a freely.The other end of attaching parts 90 can be rotated up and down on the base end part that is connected pressing body 91 freely.Pressing body 91, the direction extension is then to right-hand bending up and down from its base end part, and the intermediate portion is installed in rotation on the vertical body 3.And the leading section 91a of pressing body 91 is near above the described buckling body 73b.

In addition, when padlock pawl 29a is positioned at the below of the 73c of padlock portion of locked part 73, and when being buckled in padlock pawl 29a in the 73c of padlock portion by the spring force of extension spring 75, upper thread is cut mobile device moves the scissors 80 that discharges behind the upper thread by following action.That is, when solenoid 79 when off-state changes on-state into, solenoid-activated bar 79a is pulled to left (the arrow e direction among Fig. 5).At this moment, pressing body 91 carries out clockwise rotating on front view.Along with the rotation of pressing body 91, the leading section 91a of pressing body 91 is pressed to the below to buckling body 73b.Therefore, buckling body 73b forms clockwise rotation, thereby removes the padlock of padlock 73c of portion and padlock pawl 29a.After padlock was disengaged, handler 29 carried out clockwise rotation together with axial region 82 under the spring force effect of extension spring 75.The rotation of handler 29 and axial region 82 makes the upper thread that is installed on support arm 81 leading sections cut 80 and moves from the 1st position of readiness of the 2nd position of readiness to left.In addition, at this moment after roller 74 touches vibrating part 32, the rotation of the handle 29 that stops operating.

Below, with reference to Fig. 5 and Fig. 8 the structure of bottom line clipping apparatus 50 is described.Bottom line clipping apparatus 50 by needle plate platform 51, be arranged on bottom lines below the needle plate platform 51 and cut 52, make the bottom line of open configuration cut 52 bottom lines that become closure state to cut closing device 53 and make the bottom line of closure state cut 52 bottom lines that become open configuration and cut deploying device 54 and constitute.

Needle plate platform 51 is the plate-shaped members that are fixed in the support portion 2, is fixed with needle plate 55 in the above.On needle plate 55, be formed with the inserting hole that passes eedle 9, below needle plate platform 51, be provided with rotating shuttle device.

Bottom line is cut 52 and is had upper cutter 56, lower cutter 57 and leaf spring 58.Though upper cutter 56 be set at lower cutter 57 below, according to Fig. 8 as upward view, for convenience's sake, downside as upper cutter 56.Lower cutter 57 is installed on the front portion below the needle plate platform 51, and constituting with this base end part 57a is that the axle center can rotated in the generally horizontal plane.Upper cutter 56 is installed to be with respect to lower cutter 57 rotating states.On upper cutter 56, be provided with outstanding bearing pin 56a downwards.In the front portion of upper cutter 56, form the extension 56b that forwards extends.And leaf spring 58 is fixed on the lower cutter 57.

Below, bottom line is cut closing device 53 describe.Bottom line is cut closing device 53 and is had that drive rod 60, attaching parts 61, bottom line are cut off connecting rod 62, the bottom line of pouring out bottom line from bobbin is poured out bar 63, attaching parts 64 and attaching parts 65.In the bottom that described bottom line is cut off bar 33, be provided with the ball stud 59 that forwards extends.And the rearward end of the drive rod 60 that fore-and-aft direction extends is connected on the ball stud 59 with the ball connected mode.Drive rod 60 is that axle center axle along the vertical direction rotates and is arranged on freely in the support portion 2 with the intermediate portion.

The leading section of drive rod 60 is connected with the left part of attaching parts 61, and the other end of attaching parts 61 is connected with the rearward end that bottom line is cut off connecting rod 62.Bottom line cut off connecting rod 62 with this pars intermedia be the axle center rotate be arranged on freely needle plate platform 51 below.

The pars intermedia that bottom line is poured out bar 63 rotates and to be installed in the leading section that bottom line is cut off connecting rod 62 freely, and the pars intermedia that an end and the bottom line of attaching parts 64 poured out bar 63 constitutes rotation being connected freely.The other end of attaching parts 64 and lower cutter 57 constitutes and rotates being connected freely.The rearward end that bottom line is poured out bar 63 and an end of attaching parts 65 constitute rotates being connected freely.The other end of attaching parts 65 and needle plate platform 51 constitutes and rotates being connected freely.

Bottom line cut closing device 53 as described below like that the bottom line of open configuration is cut 52 closures.Promptly, cut at the bottom line of Fig. 8 under 52 the open configuration (the rearward open state of the relative upper cutter 56 of the front end of lower cutter 57 and leaf spring 58), when drive rod 60 rotates, by attaching parts 61, bottom line cut off connecting rod 62, bottom line is poured out bar 63 and attaching parts 64, lower cutter 57 is that forwards rotate at the center with this base portion 57a.Therefore, upper cutter 56 together forwards moves with lower cutter 57, and the extension 56b of upper cutter 56 contacts with the edge part 51b that forms needle plate platform 51 peristome 51a.So, limit upper cutter 56 moving forwards, this moment, lower cutter 57 continued forwards to rotate, and made the front end closure of front end and the lower cutter 57 of upper cutter 56, made bottom line cut 52 closures, thereby cut off from the bottom line of bobbin derivation.In addition, cut 52 o'clock, maintain bottom line by leaf spring 58 and upper cutter 56 at closed bottom line.

Bottom line is cut deploying device 54, is to open bottom line and cut 52 device by promoting described bearing pin 56a.Bottom line is cut deploying device 54 and is had solenoid 66 as movement device of the present invention, attaching parts 67, action galianconism 68 and extension spring 69.Solenoid 66 is fixed in the support portion 2, can make as the solenoid-activated bar 66a of its output shaft forwards, backwards direction move.Connecting the rearward end of attaching parts 67 at the leading section of solenoid-activated bar 66a, constituting attaching parts 67 can rotate in generally horizontal plane.Leading section in attaching parts 67 is connecting the action galianconism 68 that rotates freely.And, on an end of action galianconism 68, connecting an end of extension spring 69.Move the rotatable needle plate platform 51 that connecting freely in the other end of galianconism 68 in addition, and form the stretching pin 68a that can contact that extends out from this other end with described bearing pin 56a.The other end of extension spring 69 is fixed in the support portion 2, to (among Fig. 8) clockwise direction tension action galianconism 68 of seeing from the below.

So, cut deploying device 54 by bottom line and make scissors 52 make release bottom line as described below.When solenoid 66 when off-state forwards on-state to, solenoid-activated bar 66a is ejected.Thereby the spring force that makes action galianconism 68 overcome extension spring 69 carries out inhour to rotate, and makes the stretching pin 68a of action galianconism 68 promote bearing pin 56a.Do not touch at extension 56b under the state (that is, the advanceable state of upper cutter) of edge part 51b, when bearing pin 56a was pushed, upper cutter 56 carried out rotating forwards relative to lower cutter 57.So just, cut in 52 opening bottom line, discharged the bottom line that is held.And, when solenoid 66 when on-state transfers off-state to, under the effect of the spring force of extension spring 69, action galianconism 68 is rotated to clockwise direction.

Below, the upper thread clipping apparatus 70 with above-mentioned formation and the action of bottom line clipping apparatus 50 are described.Making in the process of Sewing machines, the original state of upper thread clipping apparatus 70 and bottom line clipping apparatus 50 is shown in the solid line among Fig. 7.That is,

1. lever 87 is positioned at the A position under the spring force effect of extension spring 31.

2. axial region 82 and handler 29 are positioned at the rear position under the spring force effect of compression spring 30.

3. as shown in Figure 7, the flange surface 32b's by roller 74 and vibrating part 32 contacts to limit by extension spring 75 and makes handler 29 to clockwise rotation.

4. solenoid 79 is an off-state, and pressing body 91 is not pushed buckling body 73b to the state of below.Push body 34 is not pushed buckling body 73b to below yet.

5. padlock pawl 29a is positioned at the top side of buckling body 73b.

6. solenoid 76 is an off-state, and upper thread is cut 80 and is open state, is positioned at the 1st position of readiness (from the top, the position of the left flange rear side of lower railway on eedle 9).

7. solenoid 66 is for disconnecting, and bottom line is cut 52 and is open state.

8. the extension 56b of upper cutter 56 does not contact with the edge part 51b of needle plate platform 51, and bottom line is cut 52 and is positioned at initial position.

After bight finished, during operator's operating operation handle 87, lever 87 was the rotation that counter-clockwise direction (direction of arrow d among Fig. 5) carried out at the center with its base end part, and turns to the B position among Fig. 7 always.During this action, upper thread clipping apparatus 70 carries out following action.That is, when making roller 89 when the flange surface 28a of rock body 28 moves to counterclockwise rotation by lever 87, the rotations that rock body 28 forms forwards.At this moment, rock body 28 is together pushed axial region 82 to the place ahead with handler 29.Because axial region 82 moving forwards makes upper thread cut 80 and also forwards moves.

On the other hand, to make vibrating part 32 be that clockwise direction among middle mind-set Fig. 7 rotates with its left part to the rotation by lever 87.It is that the center clockwise rotates with its upper end that rotation by vibrating part 32 makes bottom line cut off bar 33, and flange surface 32b pushes to roller 74 right-hand simultaneously.

Along with the rotation that bottom line is cut off bar 33, push body 34 is pushed buckling body 73b to below.On the other hand, be pushed to right-handly by roller 74, axial region 82 and handler 29 together carry out the counterclockwise rotation in Fig. 7., buckling body 73b is pushed to the below here, the action of padlock pawl 29a is not interfered with buckling body 73b by push body 34.And axial region 82 carries out counterclockwise rotation, turns to make roller 74 touch the bight 32c of vibrating part 32 always., make upper thread cut 80 and move to right-hand position of cutting off to counterclockwise rotation by axial region 82.

When upper thread cut 80 since the 1st position of readiness to cutting off the position when moving, the flange contact site 86a of movable sword 86 contact with closure plate 25, formation flange contact site 86a is closed the state of plate 25 promotions.Thereby movable sword 86 relative fixed swords 85 are carried out to counterclockwise rotation of seeing from the top.By the rotation of movable sword 86, make upper thread cut 80 closures, when cutting off upper thread, clamp the upper thread that is connected on the eedle 9.

And when further carrying out to lever 87 operation from the B position to the C position, upper thread clipping apparatus 70 carries out following action.That is, roller 89 is crossed the flange surface 28a top of rock body 28, makes rock body 28 can not continue to be pushed to the place ahead.At this moment, under the spring force effect of compression spring 30 axial region 82 and handler 29 are rearward returned, the while upper thread is cut 80 and is rearward moved under the state that remains closed.

On the other hand, by the rotation of lever 87, making vibrating part 32 is that clockwise rotation is carried out at the center with its left part.By the rotation of vibrating part 32, make bottom line cut off bar 33 and further clockwise rotate, the roller 74 that contacts with bight 32c simultaneously touches flange surface 32a.When roller 74 touches flange surface 32a, make under the spring force effect of extension spring 75 axial region 82 and handler 29 1 in the same way the clockwise direction on the front view carry out a spot of rotation, by axial region 82 to clockwise rotation, make upper thread cut 80 and under the state of closure, carry out a spot of move to left.

Here, during lever 87 moved to the C position from the A position, bottom line clipping apparatus 50 carried out following action.

As mentioned above, by the rotation of lever 87, making bottom line cut off bar 33 is that the center clockwise rotates with its upper end.Cut off clockwise rotating of bar 33 by bottom line, drive rod 60 is that the center clockwise rotates with its pars intermedia in Fig. 8.By clockwise rotating of drive rod 60, making bottom line cut off connecting rod 62 by attaching parts 61 is that middle mind-set counter-clockwise direction is rotated with the intermediate portion.Cut off the counter-clockwise direction of connecting rod 62 by bottom line and rotate, making bottom line pour out bar 63 is that the center is carried out counter-clockwise direction and rotated with the intermediate portion.Bottom line is poured out bar 63, the bottom line line falling that will draw from bobbin by counterclockwise rotation.On the other hand, by counterclockwise rotation that bottom line is cut off bar 62, making lower cutter 57 is that clockwise rotation is carried out at the center with its base end part.When lower cutter 57 rotates, when the extension 56b of upper cutter 56 contacts with the edge part 51b of needle plate platform 51, and stop the rotation of upper cutter 56, and lower cutter 57 is rotated further.Like this, pouring out bottom line that bar 63 pours out by bottom line is cut 52 by bottom line and cuts off.Then, the bottom line that is closure state is cut 52 and is clamped and cutting off the bottom line that the back is linking to each other with bobbin.

Then, after the operator decontroled lever 87, under the spring force effect of extension spring 31, lever 87 turned back to the A position.At this moment, upper thread clipping apparatus 70 carries out following action.

By the rotation of lever 87, roller 89 turns back to initial position.Therefore, rock body 28 rearward rotates after formerly forwards rotating again, turns back to original state.When rotating with this rock body 28, axial region 82 and handler 29 also forwards move earlier, rearward move then, turn back to original state.Thereby it is identical with the 1st position of readiness to make upper thread cut 80 front and back position relation.

On the other hand, by the return action of lever 87, making vibrating part 32 is the rotation that counter-clockwise direction (Fig. 7) carried out at the center with its left part.Along with the rotation of vibrating part 32, it is that counterclockwise rotation is carried out at the center with its base end part that bottom line is cut off bar 33.Along with counterclockwise rotation that bottom line is cut off bar 33, removed the promotion of 34 couples of buckling body 73b of push body, make buckling body 73b turn back to original state.In addition, along with vibrating part 32 to counterclockwise rotation, roller 74 moves to flange surface 32b to bight 32c then from flange surface 32a, simultaneously handler 29 rotates to clockwise direction under the spring force effect of extension spring 75.Meanwhile, making upper thread cut 80 by axial region 82 moves to the left.Here since at roller 74 when flange surface 32b moves, buckling body 73b turns back to original state, so the padlock pawl 29a of handler 29 is locked in the latch part 35c of buckling body 73b.Therefore, limited handler 29 to clockwise rotation, releasing roller 74 contacts with flange surface 32b's.Thereby, also can limit upper thread and cut 80 moving of direction left.

As mentioned above, when the C position turned back to the A position, upper thread 80 the front and back position relation of cutting turned back to the 1st position of readiness, and does not return its position, left and right sides relation at lever 87.This position is above-mentioned the 2nd position of readiness of cutting off after the end.Being positioned at upper thread on the 2nd position of readiness cuts 80 and is the closed state that clamps upper thread.

Here, during lever 87 turned to the A position from the C position, bottom line clipping apparatus 50 carried out following action.

As described above, by the rotation of lever 87, making bottom line cut off bar 33 is that the inhour rotation is carried out at the center with its upper end.Cut off bar 33 to anticlockwise rotation by bottom line, making drive rod 60 is that the counter-clockwise direction rotation is carried out at the center with its pars intermedia at upward view.Inhour by drive rod 60 is rotated, and making bottom line cut off connecting rod 62 by attaching parts 61 is that the center clockwise rotates with the intermediate portion.Cut off clockwise rotating of connecting rod 62 by bottom line, making bottom line pour out bar 63 is that the center clockwise rotates with the intermediate portion, and turns back to original state.On the other hand, cut off clockwise rotating of connecting rod 62 by bottom line, making lower cutter 57 and upper cutter 56 is that the inhour rotation is carried out at the center with its base end part together, and the extension 56b of releasing upper cutter 56 contacts with the edge part 51b's of needle plate platform 51.Thereby make bottom line cut 52 and under closure state, turn back to initial position.

Then, by the operation of operator to initiate key 125, Sewing machines begins to carry out making of next cycle.Sewing machines make beginning after, upper thread clipping apparatus 70 and bottom line clipping apparatus 50 carry out following action.

In upper thread clipping apparatus 70, solenoid 76 changes on-state into from off-state, and connecting rod 77 inhours (the f direction among Fig. 5) are rotated.Along with the rotation of connecting rod 77, the 2nd flange surface 77c is contacted with flange contact site 86a, flange surface contact site 86 contacts with the 1st flange surface 77b thereupon.Thereby make flared lip face 77a (the 2nd flange surface 77c and the 1st flange surface 77b) promote flange contact site 86a, make movable sword 86 carry out the rotation of clockwise direction (g direction) as shown in Figure 4.Thereby cut the 80 open upper threads that make simultaneously at upper thread and cut the upper thread that 80 releases are held.Upper thread cut 80 open after by making solenoid 76 be transformed into off-state, make solenoid-activated bar 76a and connecting rod 77 return reset condition, keep open state and make upper thread cut 80.

Then, solenoid 79 changes on-state into by off-state, and solenoid-activated bar 79a is pulled to left side (the e direction among Fig. 5).Thus, pressing body 91 is rotated, and promote buckling body 73b downwards, remove the padlock of padlock pawl 29a and buckling body 73b.Thus, handler 29 is clockwise rotated under the spring force effect of extension spring 75, touch the flange surface 32b of vibrating part 32 up to roller 74.When handler 29 rotated, axial region 82 also rotated, and made upper thread cut 80 and moved to left, turned back to the 1st position of readiness.Upper thread cut 80 turn back to the 1st position of readiness after, solenoid 79 changes off-state into, removes pressing body 91 promotion downwards.

And when beginning to make, in bottom line clipping apparatus 50, solenoid 66 changes on-state into by off-state, and solenoid-activated bar 66a forwards ejects.Thus, the counter-clockwise direction of action galianconism 68 in Fig. 8 rotated, and makes the stretching pin 68a of action galianconism 68 promote bearing pin 56a.Thus, make upper cutter 56 carry out clockwise direction relative to lower cutter 57 and rotate, the bottom line under the opening and closing state cuts 52, discharges bottom line simultaneously.After opening bottom line and cutting 52, solenoid 66 changes off-state into, and action galianconism 68 clockwise rotates under the effect of spring 69, makes action galianconism 68 turn back to original state.

Fig. 9 is the block diagram of control circuit 110 main compositions of expression sewing machine for binding buttonhole 1.

As shown in Figure 9, control circuit 110 is by CPU (central processing unit) 111, ROM (read-only storage) 112, RAM (random access memory) 113, drive the Y work feed pulse motor driver 114 of each pulse motor, baseline work feed pulse motor driver 115, and balancing point work feed pulse motor driver 116, it (is solenoid 76 here that the driving upper thread is cut movement device, 69) upper thread is cut driver 117, the driving bottom line is cut the bottom line of movement device (being solenoid 66) here and is cut driver 118, the electrical motor of sewing machine driver 119 of drive controlling electrical motor of sewing machine 5, the last presser foot lifter solenoid driver 126 of drive controlling presser feet rising solenoid 127, drive cylinder barrel driver 120 formations such as grade of the rag knife decline driving cylinder 19 of rag knife 16 declines.

Described electrical motor of sewing machine driver 119, except with electrical motor of sewing machine 5, also with the encoder 121 that axle 6 rotational angle more than the amount of spin of electrical motor of sewing machine 5 is encoded, detect eedle 9 be positioned at the top position eedle position sensor 122, be connected as TG (tachometer generator) generator 123 of the velocity of rotation of axle 6 in the detection of checkout gear of the present invention etc.

And CPU111 also is connected with the firing switch 125 that indication electrical motor of sewing machine 5 begins to drive with the button 124 of guidance panel 100 described later with 15 rise and fall of indication presser feet parts.

CPU111 is as the working region the regulation zone among the RAM102, according to the control program that is stored among the ROM112, according to from the data of guidance panel 100 input with from the detection signal of connected various sensors inputs, the control device of each drive division being controlled by each driver.

In ROM112, store and comprise from the input of guidance panel 100 and handle and carry out the calculation process of bight control data (beginning to all needle downing positions of sewing finishing etc.) computing and make the control program of making processing etc. of action according to the control data that calculates from making according to various stitch datas by guidance panel 100 inputs.

In ROM112, store corresponding each data item shown in Figure 11 the data value setting range, add and subtract and obtain data sheet place value and normal data value etc. by Substract key 103b described later and add key 103c being carried out once-through operation.

And, in ROM112, also store a plurality of in order to carry out the bight of regulation shape pattern, and the buttonhole pattern of setting according to all data values (sequence number No.1～sequence number No.23) of Figure 11.

As the RAM113 of storage device of the present invention, in computing zone, also be used to store various data by the stitched buttonhole pattern of guidance panel 100 inputs as CPU111.

Figure 10 represents to be configured in the guidance panel (input unit) 100 on the sewing machine for binding buttonhole 1.

Guidance panel 100 for example, is set on the sewing machine table that is loaded on the sewing machine for binding buttonhole 1, is to be used for carrying out the demonstration output of various settings of making parameter, setting value and to make the device shown of makeing mistakes of control procedure.

On guidance panel 100, be provided with beginning operating portion 101, sequence number operating portion 102, data value input operation part 103 and pattern handover operation portion 104.

On beginning operating portion 101, be provided with and make that preparation finishes and the preparation key 101a that desires to operate when setting again and by the display part 101b of formations such as the LED (light emitting diode) that shows its state as the operator.

Be provided with sequence number display part 102a on the sequence number operating portion 102, descending line unit 102b to reach line unit 102c.Sequence number display part 102a is made of 27 n segment display ns, shows the data item sequence number and the pattern sequence number of input data values.

Following line unit 102b and go up line unit 102c is the shift key of translation data item sequence number and pattern sequence number successively one by one, and following line unit 102b is the button of conversion downwards successively, and last line unit 102c is the button of upwards changing successively.Content about data item will be elaborated in the back.

On data value input operation part 103, be provided with data value display part 103a, Substract key 103b and add key 103c.Data value display part 103a is made of 47 n segment display ns, is used to show the data value of each data item.Substract key 103b and add key 103c are the buttons that in turn increases and decreases data value with the unit value of regulation.Like that to the unit value and the setting range of each data item decision regulation, press Substract key 103b as described later, then make data value reduce by 1 unit value, press add key 103c, then make data value increase by 1 unit value.

In pattern handover operation portion 104, be provided with the pattern serial number key 104a and the data key 104b that switches to data entry mode of the setting pattern that switches to the pattern sequence number.Above pattern serial number key 104a and data key 104b, be respectively equipped with display 104c, the 104d of LED etc., constitute the operator and can judge that being in pattern sequence number setting pattern still is in data entry mode by the light on and off of these displays.

The operator is at first by the operation to pattern serial number key 104a, pattern sequence number No.1,2,3,4 from Figure 11 ... in select required pattern sequence number, select each data item by operating data key 104b then, carry out the setting and the change of data value by data value input operation part 103.In addition, because by selecting the pattern sequence number, to its each pattern preliminary setting data value, so when this data value is desired value, there is no need to change.

Here, stitch data kind and the content to shape that can be by guidance panel 100 input and decision buttonhole stitch, size etc. describes.

Figure 11 is that expression can be from the tables of data of the data item of guidance panel 100 input, and Figure 12 is the represented key diagram of the length of various piece in bight of each data item of explanation Figure 11.In Figure 12, on the various piece of bight stitch u0, express data item title and data sequence number.

About bight stitch u0, it can show the tables of data of Figure 11 from the data item of guidance panel 100 inputs.

That is, data sequence number 1～16th, expression buttonhole length cut cloth length data (length of buttonhole otch u1), the right width of cloth data (distance of the left end of the u2 of portion is made on buttonhole otch u1 and right side) of otch, otch left side width of cloth data (distance of the right-hand member of the u2 of portion is made in buttonhole otch u1 and left side), lock seaming amplitude data (left and right sides amplitude of the u2 of latasuture system portion), eyelet tip lengths data (longitudinal length of eyelet end u3), represent the gap data (the upward distance of the upper end of the lower end of eyelet end u3 and buttonhole otch u1) of gap length, and the 2nd gap data (distance of the lower end of the upper end of following eyelet end u3 and buttonhole otch u1), parallel portion pitch interval data (the longitudinal direction distances between 2 pins of the u2 of latasuture system portion), eyelet end pitch interval data (the longitudinal direction distances between 2 pins of eyelet end u3), the right offset data (length that staggers of the right-hand member of the u2 of portion is made on the right-hand member of eyelet end u3 and right side) of eyelet end amplitude, an amplitude left side, eyelet end offset data (length that staggers of the left end of the u2 of portion is made in the left end of eyelet end u3 and left side), left side parallel portion tension data (line tension when making of the u2 of portion made in the left side), right parallel portion tension data (line tension when making of the u2 of portion made on the right side), the 1st eyelet end tension data (line tension when going up the making of eyelet end u3), the 2nd eyelet end tension data (line tension during the making of following eyelet end u3), each of maximum speed restricting data (the maximum limit speed of Sewing machines rotating speed) etc.

In addition, the data sequence number 17～23rd of Figure 11 has the data item of feature of the present invention.Sewing machines in the past begins to carry out under the situation of bight shown in Figure 12 at the A point of the portion of making from the left side like that shown in Figure 13 (a), must be shown in Figure 13 (b) end at identical A point like that.But the present invention is owing to be provided with

solenoid

76,79,66, make the upper thread clipping apparatus 70 cut off behind the suture and bottom line clipping apparatus 50 independent, so there is no need to make as before the sewing finishing position and to make the starting position consistent with respect to other mechanisms that work feed and presser feet lift etc.Therefore, can set respectively and make starting position and sewing finishing position.

That is, can carry out data sequence number No.19 to Sewing machines 1 and " make the starting position ", the setting of sequence number No.20 " sewing finishing position ".For example, can set the A point and be " making the starting position ", the B point of setting among Figure 13 (c) is " sewing finishing position ".These data are that formation is made origin position on the Y` direction (direction opposite with cloth feeding direction) of stitch direction as " 0 ", can set at the interval with 0.1mm in the scope of " 0.00～5.00 " mm.In addition, make starting position and sewing finishing position here all is positioned at the inboard that portion is made in left side on the baseline.

In addition, because being the trimming action, formation in the past forms interlock, so when finishing 1 bight, can not lift presser feet at every turn with the action of lifting presser feet.And, because work feed parts and release suture associated, so when making beginning, must be arranged on the mechanical origin position to cloth-feeding device (Y work feed drive unit).

Yet,,, also can freely set the sewing position of relative presser feet so can once form a plurality of bights (making continuously) continuously owing to do not have such connection among the present invention.

For example, as long as use the very long presser feet that can surround adjacent 2 buttonhole zones, then after having made 1 buttonhole, need not lift presser feet and just can carry out bight in next buttonhole position.

That is, to Sewing machines 1 can setting data sequence number No.17 " making number ", " making at interval " and " sewing position " of sequence number No.23 of sequence number No.18.Can in " 1～5 " individual scope, set for " making number ".For example, as shown in figure 14, use the fully long presser feet 15 of Y direction ', form under the situation of 2 buttonhole B1, B2 shown in Figure 14 (a), be set at " 2 ".And under the situation that forms 1 buttonhole B3 shown in Figure 14 (b), be set at " 1 ".

" make at interval " is under the situation that forms a plurality of buttonholes shown in Figure 14 (a), is used to set the distance W between the initial point of making stitch of adjacent 2 buttonholes, can set at the interval with 1mm in the scope of " 0～100mm ".

" sewing position " of data sequence number No.23 is that the mechanical origin position with Y work feed drive unit 13 is a benchmark, beginning most the formed origin position (becoming the position of the initial point of described " making the starting position ") of making stitch, promptly, if Figure 14 (a), Figure 14 (b) then is set at " 01 ", if then can be set at " 02 ".Value can be set at the interval with 1mm in the scope of " 0～100mm " hereto.Set by this, can be set in any locational the making in presser feet 15 ' frame.

Because " sewing position " by data sequence number No.23 can freely be set in the interior sewing position of presser feet, so can carry out in good condition making near the flanging of cloth.But if constituted in the past, suppose to use long presser feet 15 ', because the position of formation bight and the fixed-site of work feed are constant, so when near the bight B4 the S1 of flanging portion that is positioned at cloth S that is forming shown in Figure 15 (a), presser feet 15 ' formation is floated, at the next presser feet that must change than presser feet 15 ' weak point of this situation.

Yet, if as in the present invention can presser feet 15 ' frame in freely set sewing position, be set in the S1 of the flanging portion of getting out of the way like that can be shown in Figure 15 (b) presser feet 15 ' on sewing position, and needn't change presser feet 15 '.

And, because in upper thread clipping apparatus 70 and bottom line clipping apparatus 50, use is carried out the release of upper thread, bottom line by the independently movement device that solenoid 76, solenoid 66 constitute, so can freely be set in the upper thread when making beginning, some release time of bottom line.Therefore, can in the scope of " 1～20 " of making beginning pin number, set for the data sequence number No.21 of Figure 11 " upper thread discharges constantly ", sequence number No.22 " bottom line discharges constantly ".

And, in described ROM112, store tables of data t1 shown in Figure 16.In this tables of data t1, set corresponding respectively upper thread, the bottom line of going up the axle rotating speed, discharge compensation pin number constantly.For example, when rotating speed is " 400 ", no matter be that the compensation pin number to upper thread or bottom line is " 0 ", under this situation, discharge suture in the moment of setting by data sequence number No.21 " upper thread discharges constantly ", sequence number No.22 " bottom line discharges constantly ".When rotating speed was " 3000 ", the value from setting by data sequence number No.21, sequence number No.22 deducted " 3 " pin to upper thread, and bottom line is deducted " 2 " pin, and the amount that deducts with this quilt discharges suture in advance.That is, tables of data t1 is used under the high situation of sewing speed, adjusts setting value, makes to discharge suture a little in advance.

In the pattern sequence number of Figure 11, sequence number No. " 60 ", " 61 " are the patterns of " different pattern is made continuously " that different patterns is made continuously.For example, when having selected pattern " 60 ", replace the setting of data item, but picture carries out the content of each operation and the setting of its sewing position as the tables of data t2 of Figure 17 of routine different pattern bight data by guidance panel 100.To each operation, set 1 pattern sequence number of making shape, this operation is made according to the stitch data of selected pattern sequence number." sewing position " is distance apart from the origin position of work feed for operation 1 and described data sequence number No.23 " sewing position " equally, is distance with previous operation for other operation.

In Figure 17, for example in operation 1, be " 1 ", in operation 2, be " 2 ", carry out repeatedly in this wise, till operation 5,, operation 1 is made as " 30 " for sewing position, other are set at " 70 ".After having carried out such setting, carry out bight repeatedly, and the spacing of each eyelet is 70mm according to pattern sequence number No.1 and pattern sequence number No.2 with forming exchange.

Figure 18～Figure 21 is sewing machine for binding buttonhole 1 with above-mentioned formation is carried out various processing under the control of CPU111 a flow chart.

Figure 18 represents to carry out the summary flow process of bight.

The flow process of Figure 18 for example is when Sewing machines 1 is connected power supply.At first, in step S1, the operator sets processing on guidance panel 100.In step S2, judge whether prepare key 101a is pressed, if, then enter step S3, if not, then return step S1.

In step S3, the processing according to the data of setting by guidance panel 100 are calculated needle downing position in step S4, judges whether to have been pressed preparation key 101a then.At this moment,, then return step S1 once more, can set again if pressed preparation key 101a.Do not pressed if prepare key 101a at step S4, then enter step S5, placed by the operator and make thing this moment.Then, in step S6, judge whether to have connected firing switch 125.If the operation by the operator is connected firing switch 125, then enter step S7, the processing of making that comprises bight, buttonhole opening this moment and cut off suture etc.If be judged as access failure firing switch 125, then return step S4 at step S6.

Figure 19 represents the flow process of making processing of described step S7.At first, in step J1,, count and be " M=1 " as the initial value of the data sequence number No.17 of Figure 11 " making number ", then in step J2, on the Y direction, cloth delivered to " sewing position " set by data sequence number No.23 by Y work feed pulse motor 20.And, in step J3, on the Y direction, cloth delivered to " making the starting position " of setting by data sequence number No.19.

Enter step J4 then, drive electrical motor of sewing machine 5 grades this moment, fall eedle 9 on the needle downing position of in described step S3, obtaining, form whipstitch, drive the buttonhole opening that rag knife 16 forms specific length (the data sequence number No.1 of Figure 11) simultaneously, and drive upper thread clipping apparatus 70 and bottom line clipping apparatus 50 as described above, carry out trimming and handle.

Then, in step J5, judge whether the M value of described step J1 equals data sequence number No.17 " making number ".If equal to make number, then enter step J8, drive presser feet rising solenoid 127, presser feet 15 is risen, this processing leaves it at that.

And, then in step J6, carry out the counting of " M=M+1 " when being judged as M at step J5 for also not reaching when making number.Then in step J7, carry out work feed according to " making at interval " distance of setting at described data sequence number No.18, in step J9, on the Y direction, cloth is delivered to " making the starting position ", return step J4 then, carry out making next time.

Figure 20 is the flow chart that the release of the expression upper thread of making when beginning, bottom line is handled.This is handled at first in step J10, is used to detect the insertion signal that eedle arrives pin upper position sensor 122 outputs of going up vertex position by input and begins to carry out.In step J11, form the counting that adds " 1 " then.

Then, in step J12, obtain current rotating speed from TG generator 123.Then, in step J13, deduct according to the pin number (compensation of pin number) of among the tables of data t1 of rotating speed that step J12 obtains, trying to achieve from the pin number in " the upper thread release moment " that the data sequence number No.21 by Figure 11 sets, obtain release upper thread pin number constantly at Figure 16.

Step J14 is identical with step J13, deduct according to the pin number (compensation of pin number) of among the tables of data t1 of rotating speed that step J12 obtains, trying to achieve from the pin number in " the bottom line release moment " that the data sequence number No.22 by Figure 11 sets, obtain release bottom line pin number constantly at Figure 16.

Then, in step J15, judge whether the current pin number of making surpasses the pin number of trying to achieve at step J13, if the judgment is Yes, then enters step J16, drive the clamping of upper thread clipping apparatus 70 (solenoids 76) releasing, enter step J17 upper thread.

Do not reach the pin number of obtaining at step J13 if in step J15, be judged as, then directly enter step J17.At step J17, judge whether the current pin number of making surpasses the pin number of trying to achieve at step J14, if the judgment is Yes, then enters step J18, at this moment drives bottom line clipping apparatus 50 (solenoid 66), removes the clamping to bottom line, finishes this processing.Do not reach the pin number of trying to achieve if be judged as, then directly finish this processing at step J14 at step J17.

Figure 21 be the expression as the tables of data t2 of Figure 17, set different pattern is made the flow chart of processing continuously.This is handled by operation firing switch 125 and begins to carry out, and at first in step J20, process number is begun counting from " N=1 ".Then, in step J21, N here is that cloth is delivered to the 1st sewing procedure position on the Y direction, in step J22, is that cloth is delivered to " making the starting position " on the Y direction.

Then, entering step J23, carry out N, here is to carry out making of the 1st pattern, in step J24, adds 1 on N, carries out new N counting, and enters step J25.In step J25, judge the N operation of in tables of data t2, whether having set by step J24 counting, if, then return step J21, the pattern of N operation is made.At step J25, do not set " N " individual operation if be judged as, then finish this processing.

According to above-mentioned sewing machine for binding buttonhole 1, make upper thread cut 80 by solenoid 76 and discharge upper thread, make bottom line cut 52 by solenoid 66 and discharge bottom line.The release that is upper thread, bottom line is to use separate drive source, rather than forms interlocks with other devices of cloth-feeding device etc. as before.Therefore, be not subjected to the restriction of cloth-feeding device.

Thereby constituted the setting that to make starting position (the data sequence number No.19 of Figure 11) and sewing finishing position (data sequence number No.20) by guidance panel 100, under the control of CPU111, can form the stitch of making starting position and sewing finishing position diverse location.

Thereby saved invalid the making as in the past, can improve aesthetic property and sewing quality, and can shorten stitch cycle with this.

In addition, by making the solenoid 76,66 that discharges suture independent like this, make on one side can carry out the first opening that before making one side work feed forms the buttonhole opening with cloth-feeding device.

As mentioned above, Sewing machines 1 can fully be applicable to various stitch design and method of sewing.

And, because by discharging suture with different upper threads, bottom line movement device respectively, and (data sequence number No.21), bottom line discharge the setting of (data sequence number No.22) constantly constantly can to carry out upper thread release to upper thread, bottom line respectively by guidance panel 100, so can corresponding sewing condition, the for example length and the width of the kind of cloth and suture and eyelet buttonhole, discharge suture so that the end of a thread fitly is hidden in the suitable moment of making in the stitch naturally, can further improve sewing quality.

And, because according to tables of data t1 shown in Figure 16, the fast more ahead relieving more of rotating speed so considered the actual situation of making, can further improve sewing quality to the clamping of suture when making beginning.

And, because " sewing position " by guidance panel 100 setting data sequence number No.23, can set the formation position of making stitch on the presser feet 15 (15 ') thus, can on presser feet, change sewing position according to the size of presser feet and the state of cloth (sewn object) etc., even so need to change under the situation of presser feet in the past, also can only need to change sewing position and obtain the good state of making, improve operability.

And, owing to can make continuously, can in data sequence number No.17, set value more than " 2 " by guidance panel 100, can use as described presser feet 15 ' big presser feet, presser feet need not be lifted and just a plurality of bights can be formed continuously, so can shorten stitch cycle, enhance productivity.

If particularly, form the bight of different pattern serially, applicable to multifarious design according to the continuous stitch mode of different pattern that sets at tables of data t2 (Fig. 7).

In addition, in embodiment 1, be to adopt by making back operating operation handle 87, cut off upper thread and bottom line with the transmission of this mechanical action, then as movement device, upper thread is cut 80 mobile use solenoid 79, the release movement of upper thread, bottom line is used the structure of solenoid 76,66, yet the invention is not restricted to this.

Promptly, also can use solenoid to drive the exercises of upper thread clipping apparatus, bottom line clipping apparatus as drive source, at this moment moving and discharge all actions such as suture behind trimming action just, the trimming also can drive action more than 2 with 1 solenoid.

And under the situation that different pattern is made continuously, bight also can comprise different tailoring patterns, for example comprises making continuously of tailoring pattern that embroidery pattern is such.

Embodiment 2

Figure 22～Figure 25 represents embodiments of the invention 2.The Sewing machines of this embodiment 2, the Sewing machines of its primary structure and embodiment 1 is basic identical, and just therefore upper thread clipping apparatus and bottom line clipping apparatus difference, describe this difference below.

Movement device as upper thread clipping apparatus of the present invention, bottom line clipping apparatus is not limited to described solenoid, so long as the device that can carry out electronic control just can, for example also can as following upper thread clipping apparatus 200 and bottom line clipping apparatus 230, use pulse motor.In Figure 22～Figure 25, use identical symbol for the parts identical with described embodiment.

As Figure 22 and shown in Figure 23, upper thread clipping apparatus 200 has upper thread and cuts 80 and make upper thread cut 80 with pulse motor 201 as drive source to make upper thread cut 80 upper threads that move when opening and closing to cut driving mechanism 202.

Upper thread is cut driving mechanism 202 and is had pulse motor 201, lever arm 77, flange mechanism 204, upper thread and cut off base station 205, vibrating part 207,210, flange lock 208,211 and extension spring 209,212.

In transverse arm portion 4, be provided with base station 203, upper thread be installed on base station 203 cut driving mechanism 202.The driving shaft 201a of pulse motor 201 gives prominence to right-hand from base station 203, and rotates freely relative to base station 203.

On the rearward end of the bottom of base station 203, rotation rotating base 206 freely is set.The rearward end of cutting off base station 205 with the upper thread of base station 203 almost parallel settings is connected with rotating base 206, forms to relatively rotate pedestal 206 along the fore-and-aft direction slip freely.

In addition, be fixed with vibrating part 207 on the left side of base station 203.On the leading section of vibrating part 207, form flange surface 207a.

And,, connecting an end of the flange lock 208 of hook shape rotationally on the left side of base station 203.Connecting an end of extension spring 209 on flange lock 208, the other end of extension spring 209 is connected with base station 203.Extension spring 209 pulls to the counter-clockwise direction that (Figure 23) sees from the right side to flange lock 208.Bottom at flange lock 208 forms flange surface 208a.

On the other hand, on cutting off the right side of base station 205, upper thread is fixed with the vibrating part 210 that forms flange surface 210a.And the flange surface 210a opposing flanges face that the moves forward and backward 207a that cuts off base station 205 along with upper thread forms contact or separation.

And, cut off at upper thread on the left side of base station 205, be fixed with flange lock 211, forming flange surface 211a on this upper end, to cut off base station 205 from upper thread outstanding upward.

Under the contacted state of flange surface 208a of this flange surface 211a and flange lock 208, when flange lock 211 when left moves, the spring force of flange lock 208 opposing extension springs 209 is that rotate upward at the center with end thereafter.And final flange surface 208a forms with contacting of flange surface 211a and staggers, and forms the right side of flange lock 211 and the left side state of contact of flange lock 208.

In addition, cut off the pars intermedia of base station 205, be connected with the extension spring 212 that hand-pulled noodles line is to the right cut off base station 205 at upper thread.By this extension spring 212, upper thread is cut off base station 205, and to pull to rotating base 206 be the direction that rotate to the right at the center.Yet,, limit upper thread and cut off base station 205 rotation to the right when the right side and the left side of flange lock 208 of flange lock 211 form when contacting.

And the lever arm 77 identical with embodiment 1 is that the axle center is rotated and is installed in upper thread freely and cuts off on the right side of base station 205 with the intermediate portion.Lever arm 77 pulls to the rear by extension spring 78.

Cut off the leading section of base station 205 at upper thread, be provided with upper thread and cut 80.And the leading section of cutting off base station 205 at upper thread is provided with closure plate 25.

In addition, on the driving shaft 201a of pulse motor 201, be connected with cam mechanism 204.Cam mechanism 204 by be installed in the driving cam 213 on the driving shaft 201a, front and back cam lever 214 and the weft cutter cam bar 215 that is installed on the driving cam 213 constitutes.

Driving cam 213 is arranged on roughly discoid parts of being of base station 203 right sides, and this central portion is fixed on the described driving shaft 201, can together rotate with driving shaft 201a.On driving cam 213, be formed with the 1st cam hole 213b and the 2nd cam hole 213c.Form the test section 213a that stretches out laterally on driving cam 213, the edge part 213d to this test section 213a detects by sensor 218.By the detection of sensor 218, detect the original state of the rotational angle of driving cam 213 to this edge part 213d.

Rotate and freely the pars intermedia of front and back cam lever 214 is connected on the base station 203.Be provided with the cam following axle 214a that slidably embeds freely in the 2nd cam hole 213c on the top of front and back cam lever 214, and bearing pin 216 be set in the bottom.Bearing pin 216 embeds sliding freely and is formed on upper thread and cuts off in the elongated through hole 205a on the base station 205.Rotate and freely the pars intermedia of weft cutter cam bar 215 is connected on the base station 203.The top of weft cutter cam bar 215 is provided with the cam following axle 215a that slidably embeds freely in the 1st cam hole 213b, is provided with the bearing pin 217 near lever arm 77 the other end in the bottom of weft cutter cam bar 215.

In addition, though it is not represented in Figure 22, say that exactly the first cam hole 213b and the second cam hole 213c are made of the circular arc cam groove that a plurality of centers continuous and driving cam 213 keep the circular arc cam groove of certain distances and change distance gradually.Therefore, rotate to the direction of regulation by the driving cam 213 that is driven by pulse motor 201, make the center of the cam following axle 215a that embeds the first cam hole 213b and the second cam hole 213c, the relative driving cam 213 of 214a or maintain a certain distance, or away from, or approaching.This away from or near the time, by cam following axle 215A, 214a, weft cutter cam bar 215, front and back cam lever 214 are rotated to the direction of regulation.

And, by the rotation of front and back cam lever 214, and make upper thread cut off base station 205 by bearing pin 216 to move forward and backward.In addition, by the rotation of weft cutter cam bar 215, and lever arm 77 is rotated by bearing pin 217.

Below, bottom line clipping apparatus 230 is described.As Figure 24 and shown in Figure 25, bottom line clipping apparatus 230 is basic identical with the structure of the bottom line clipping apparatus 50 of embodiment 1, have that bottom line cuts 52, bottom line with closing device 240, bottom line with releasing device 245 and drive unit 233.

Drive unit 233 has pulse motor 231, second driving cam 234, L font the 1st connection handle 235 and L font the 2nd connection handle 236.

Pulse motor 231 is fixed below the base station 232 that is fixed on support portion 2 inside (not shown in Figure 24).The driving shaft 231a of pulse motor 231 is outstanding upward from base station 232, rotates freely relative to base station 232.

Second driving cam 234 is set at the top of base station 232.Second driving cam 234 is parts roughly in the form of annular discs, and its central portion (center of rotation) is fixed on the driving

shaft

231a, and 231a together rotates with driving shaft.Peripheral part at second driving cam 234 forms test section 234a, is detected the edge part 234d of this test section 234a by sensor 237.By this edge part 234d being detected, detect the original state of the rotational angle of second driving cam 234 by sensor 237.

On second driving cam 234, be formed with the first cam hole 234b and the second cam hole 234c.

First connection handle 235 of L font, its bend can rotate around the axle of above-below direction and be installed in freely in the support portion.On an end of first connection handle 235, be provided with the cam following axle 235a that slidably embeds freely in the first cam hole 234b.The rearward end of its other end and the attaching parts 241 of bottom line closing device 240 forms rotates being connected freely.The end that the leading section of attaching parts 241 and bottom line are cut off linking arm 242 constitutes rotates being connected freely.

Second connection handle 236 of L font, its bend can rotate around the axle of above-below direction and be installed in freely in the support portion.On an end of second connection handle 236, be provided with the cam following axle 236a that slidably embeds freely in the second cam hole 234c.Its other end and bottom line constitute with the rearward end of the attaching parts 67 of releasing device 245 and rotate being connected freely.

The first cam hole 234b and the second cam hole 234c of second driving cam 234 are respectively as shown in figure 25, and the circular arc cam groove that is kept the cam path of certain distances and changed distance gradually by a plurality of centers continuous and driving cam 234 is constituted.Therefore, rotate to the direction of regulation by the driving cam 234 that drives by pulse motor 231, make the center of the cam following axle 235a that embeds the first cam hole 234b and the second cam hole 234c, relative second driving cam 234 of 236a or maintain a certain distance, or away from, or approaching.This away from or near the time, by

cam following axle

235a, 236a, second connection handle 236 of first connection handle 235, the L font of L font is rotated to the direction of regulation.

And, by the rotation of first connection handle 235, make bottom line cut 52 closures, by the rotation of second connection handle 236, make bottom line cut 52 and open.

Below, the action of upper thread clipping apparatus 200, bottom line clipping apparatus 230 is described.Making in the process of Sewing machines, the original state of upper thread clipping apparatus 200 is as described below.

1. detect edge part 213 by sensor 218, pulse motor 201 and driving cam 213 are positioned at the turned position of original state.Cam following axle 214a, cam following axle 215a lay respectively at the second cam hole 213c, the approximate centre portion of the first cam hole 213b.

2. lever arm 77 is positioned at the rear under the effect of extension spring 78.And upper thread is cut 80 position of readiness in regulation and is open state.

3. the left side of the right side of flange lock 211 and flange lock 208 forms state of contact.Thus, limit upper thread by extension spring 212 and cut off the rotation of base station 205 to right.

4. the flange surface 210a of vibrating part 210 does not form with the flange surface 207a of vibrating part 207 and contacts.

In addition, the original state of bottom line clipping apparatus 230 is as follows.

1. sensor 237 detects edge part 234d, and the pulse motor 231 and second driving cam 234 are positioned at the turned position of original state.

2. cam following axle 235a, cam following axle 236a lay respectively at the approximate centre portion (the S point among Figure 24, R point) of the first cam hole 234b, the second cam hole 234c.

3. the extension 56b of upper cutter 56 does not form with the edge part 51b of needle plate platform 51 and contacts, and bottom line is cut 52 and is positioned at the position of readiness of regulation and is open state.

So, after the sewing finishing when pulse motor 201 carries out forward rotation, driving cam 213 carries out inhour (the arrow k direction among Figure 23) and rotates, though cam following axle 215a slides along the first cam hole 213b, but the distance at cam following axle 215a at this moment and driving cam 213 centers keeps certain, so weft cutter cam bar 215 does not rotate.

On the other hand, the rotation of driving cam 213 makes cam following axle 214a slide along the second cam hole 213c.At this moment along the shape of the second cam hole 213c, the distance of the center of driving cam 213 and cam following axle 214a strengthens.Thereby cam following axle 214a is rearward moved, and cam lever 214 carries out (the arrow h among Figure 23) rotation clockwise before and after making.

Like this, bearing pin 216 is forwards rotated, make upper thread cut off base station 205 and forwards move.When flange lock 211 and upper thread are cut off base station 205 when together forwards mobile, the contact condition that the right side of flange lock 211 and flange are locked 208 the left side is disengaged, and the distance between flange surface 207a and the flange surface 210a also strengthens.After the contact condition of locking 208 the left side with flange when the right side of flange lock 211 was disengaged, under the effect of extension spring 212, the leading section that upper thread is cut off base station 205 was that the center is to right-hand rotation with rotating base 206.By upper thread cut off base station 205 to right-hand rotation, flange contact site 86a and closure plate 25 forms and contacts.So identical with embodiment 1, upper thread is cut 80 closures.Cut 80 closure by upper thread and cut off upper thread, clamp the upper thread of being cut off simultaneously.

Though proceed inhour and rotate cutting off upper thread rear drive cam 213, the distance at cam following axle 214a and driving cam 213 centers keeps necessarily.Thereby cam lever 214 stops operating before and after making, and also makes upper thread cut off base station 205 simultaneously and stops forwards to move.

Then, pulse motor 201 carries out contrary rotation, stops the rotation when the driving shaft 201a of pulse motor 201 turns back to original state.By this contrary rotation, make driving cam 213 carry out the rotation of clockwise direction (the arrow j direction among Figure 23), can not make weft cutter cam bar 215 rotate by cam following axle 215a this moment, rotate but can make front and back cam lever 214 carry out counter-clockwise direction, make upper thread cut off base station 205 and rearward move by cam following axle 214a.

Cut off base station 205 when together rearward mobile when vibrating part 210 and upper thread, flange surface 210a contacts with flange surface 207a formation.When vibrating part 210 and upper thread are cut off base station 205 when together further rearward mobile,, make upper thread cut off the spring force direction rotation left of the leading section opposing extension spring 212 of base station 205 by contacting of vibrating part 210 and vibrating part 207.

In addition, after sewing finishing, when the pulse motor 231 of bottom line clipping apparatus 230 was rotated in the forward, second driving cam 234 carried out clockwise direction (the n direction among Figure 24) and rotates.Like this, though cam following axle 236a slide along the second cam hole 234c because the distance at cam following axle 236a and second driving cam, 234 centers keeps necessarily, so second connection handle 236 does not rotate.On the other hand, cam following axle 235a slides along the first cam hole 234b, along the shape of the first cam hole 234b, forms the center of second driving cam 234 and the distance of cam following axle 235a and diminishes.Thereby, cam following axle 235a is moved to right-hand, first connection handle 235 is rotated to the counter-clockwise direction of upward view (state of Figure 24).

Along with the rotation of first connection handle 235, with bottom line line falling bar 63 when counter-clockwise direction is rotated, lower cutter 57 rotates to clockwise direction.Bottom line line falling bar 63 rotates on one side, on one side bottom line is poured out a side of lower cutter 57.On the other hand,, make bottom line cut 52 closures, cut off poured-out bottom line by the rotation of lower cutter 57, and with its clamping.

After cutting off bottom line, though proceeding clockwise direction, second driving cam 234 rotates, but the cam following axle 235a of this moment and the center of rotation of second driving cam 234 maintain a certain distance, so first connection handle 235 does not rotate, therefore, bottom line is cut 52 and is not also rotated, and is positioned under the state of closure and cuts off the position.

Afterwards, pulse motor 231 carries out contrary rotation, stops operating after the driving shaft 231a of pulse motor 231 turns back to original state.Move when pulse motor 231 carries out contrary rotation, second driving cam 234 though by cam following axle 236a second connection handle 236 is rotated, can make first connection handle 235 clockwise rotate by cam following axle 235a to counterclockwise rotation.Along with making bottom line cut 52, the rotation of first connection handle 235 under the state of closure, turns back to initial position.

Afterwards, carried out the operation of firing switch as the operator after, Sewing machines begins to carry out making of following one-period.When making beginning, pulse motor 201 carries out contrary rotation, and driving cam 213 carries out clockwise direction (the J direction among Figure 23) and rotates.

Because when this rotated, the distance of the center of rotation of cam following axle 214a and driving cam 213 kept certain, so front and back cam lever 214 does not rotate, upper thread is cut off base station 205 and is not also moved.And the distance of the center of rotation of cam following axle 215a and driving cam 213 diminishes.Thereby cam following axle 215a is rearward moved.Like this, the clockwise direction of weft cutter cam bar 215 in Figure 23 rotated, bearing pin 217 is forwards moved.Therefore, bearing pin 217 is pushed the other end of lever arm 77 to the place ahead, and the spring force of lever arm 77 opposing extension springs 78 rotates to counter-clockwise direction (direction of arrow among Figure 23).By the rotation of lever arm 77, open scissors flange part 77a and promote flange contact site 86a, make upper thread cut 80 and open, discharge upper thread.

After discharging upper thread, though driving cam 213 continues to rotate to clockwise direction, because the distance of the center of rotation of cam following axle 215a and driving cam 213 is certain, so, weft cutter cam bar 215 does not rotate, and weft cutter cam bar 215 stops with the state of lever arm 77 being pushed to the place ahead.

Simultaneously, cam following axle 214a also slides along the second cam hole 213c, but this moment, the distance of the center of rotation of driving cam 213 and cam following axle 214a diminishes.Therefore, front and back cam lever 214 rotates to counter-clockwise direction, and bearing pin 216 rearward rotates.Therefore, vibrating part 210 is cut off base station 205 with upper thread and is together rearward moved, and forms with vibrating part 207 to contact.Thereby the spring force that makes upper thread cut off base station 205 opposing extension springs 212 rotates to left.

When upper thread is cut off base station 205 when left rotates, the flange surface 211a of flange lock 211 and flange are locked 208 flange surface 208a and are contacted.Cut off base station 205 when upper thread and continue when left rotates, flange surface 211a promotes flange surface 208a, and making flange lock 208 is that rotate upward at the center with end thereafter.Finally make flange lock 211 move to the left of flange lock 208, releasing flange surface 211a contacts with flange surface 208a's.Afterwards, flange lock 208 is that rotate downwards at the center with end thereafter under the spring force effect of extension spring 209.

Cut off base station 205 when left rotates at this upper thread, the left side of flange lock 208 contacts with the right side of flange lock 211.Under this state,, also can form the restriction upper thread and cut off base station 205 to right-hand rotation even motor 201 stops contrary rotation.Here, it is identical with original state that upper thread is cut off the position, the left and right sides of base station 205.As mentioned above, make upper thread cut 80 and under open state, turn back to position of readiness, form original state.

Then, when pulse motor 201 was rotated in the forward, driving cam 213 rotated to counter-clockwise direction.At this moment, by cam following axle 215a weft cutter cam bar 215 is rotated.So weft cutter cam bar 215 stops lever arm 77 is pushed to the state in the place ahead.

In addition, by cam following axle 214a front and back cam lever 214 is clockwise rotated, and bearing pin 216 is forwards rotated.Therefore, vibrating part 210 is cut off base station 205 with upper thread and is together forwards moved, and the front and back position that finally makes upper thread cut off base station 205 moves to the position identical with original state.

Though driving cam 213 rotates to counter-clockwise direction, because the distance of the center of rotation of cam following axle 214a and driving cam 213 keeps certain, so front and back cam lever 214 does not rotate.Thereby, making upper thread cut off base station 205 and keep original states and do not move, upper thread is cut 80 and is also rested on position of readiness and do not move.

On the other hand, make weft cutter cam bar 215 carry out counter-clockwise direction by cam following axle 215a and rotate, bearing pin 217 is rearward rotated.Thereby lever arm 77 is clockwise rotated under the spring force effect of extension spring 78, make and open scissors flange part 77a and separate with flange contact site 86a.

Then, when control device makes pulse motor 231 carry out contrary rotation, second driving cam 234 is rotated to counter-clockwise direction (the m direction among Figure 24).

When carrying out this when rotating, because the distance of cam following axle 235a and the center of rotation of second driving cam 234 keeps certain, so first connection handle 235 does not rotate, it is 52 also mobile that bottom line is cut.

On the other hand, the distance of the center of rotation of second driving cam 234 and cam following axle 236a diminishes, so second connection handle 236 rotates to the clockwise direction of upward view.Along with the rotation of second connection handle 236, action galianconism 68 rotates to the counter-clockwise direction of upward view.Make the stretching pin 68a of action galianconism 68 leading sections promote bearing pin 56a like this.Thereby upper cutter 56 is rotated, and make the bottom line of closure state cut 52 to open, discharge bottom line simultaneously.

When second driving cam 234 when counter-clockwise direction is rotated, because the distance of the center of rotation of cam following axle 236a and second driving cam 234 of this moment keeps necessarily, so second connection handle 236 does not rotate.Thereby make bottom line cut 52 and keep open state.

Then, when pulse motor 231 was rotated in the forward, second driving cam 234 rotated to clockwise direction.By this rotation, can not first connection handle 235 be rotated by cam following axle 235a, bottom line is cut 52 and is not also moved.And second connection handle 236 is rotated to the counter-clockwise direction of upward view by cam following axle 236a.Along with the rotation of second connection handle 236, action galianconism 68 rotates to the clockwise direction of upward view, removes action the stretching pin 68a of galianconism 68 and contacting of bearing pin 56a.As mentioned above, make bottom line clipping apparatus 230 return original state.

According to top embodiment 2, pulse motor 201 is set on upper thread clipping apparatus 200, pulse motor 231 is set on bottom line clipping apparatus 230, carries out the cutting off of suture, clamping and release, constitute driving to these actions and be independent of driving other mechanisms such as work feeds with 1 motor.Thereby, can realize effect and the effect identical with described embodiment 1.

In addition, as movement device, though shown motor, solenoid, in addition, also can the usage operation cylinder barrel etc., and can to upper thread with and bottom line with being provided with respectively, also can constitute 1 movement device of release use to both sides.

As the representative effect of the present invention, for example owing to have the movement device that carries out the bottom line that upper thread discharges and bottom line the is cut release that upper thread cuts respectively, drive source carries out the release of upper thread, bottom line so used independently respectively, and forms interlocks with other mechanisms such as cloth feeding mechanism unlike in the past.Therefore, can make the setting of starting position and sewing finishing position, and under the control of control device, can form and make the starting position stitch different with the sewing finishing position by input unit.

Therefore, can save invalid making, can improve aesthetic property thus and improve sewing quality, shorten stitch cycle.

And, because the drive source that suture is discharged is independent of cloth feeding mechanism, thus can carry out before making work feed on one side, Yi Bian form the making of first otch of buttonhole opening.

In sum, according to formation of the present invention, can fully be applicable to various design and method of sewing.

Claims

1. sewing machine for binding buttonhole comprises:

Pass eedle that upper thread and the rotation by main shaft move up and down with respect to sewn object and

Be positioned at the below of sewn object and provide bottom line rotating shuttle and

Push down sewn object foot device and

Make in order around the buttonhole opening, to form whipstitch mobile device that eedle and foot device relatively move and

Have cut off upper thread and grip shears have no progeny upper thread clipping apparatus that the upper thread of upper thread cuts and

Have and cut off bottom line and the grip shears bottom line clipping apparatus that the bottom line of bottom line cuts of having no progeny;

It is characterized in that: have:

Carry out respectively by upper thread cut remove that the opposite wire clamp is held and by bottom line cut releasing to the movement device of bottom line clamping and

Input as the bight shape of bight data and make starting position and sewing finishing position input unit and

Preservation by the bight data of input unit input storage device and

From storage device, read the bight data that deposit in and make eedle and foot device carry out relative move and carrying out from making the starting position after the making of sewing finishing position by mobile device, the action of control upper thread clipping apparatus and bottom line clipping apparatus makes it carry out the control device of the cutting off of upper thread and bottom line, clamping and release movement respectively.

2. sewing machine for binding buttonhole according to claim 1 is characterized in that:

Can set respectively by upper thread by input unit and cut and bottom line is cut some release time of opposite, bottom line;

Control device makes it discharge upper thread and bottom line immediately respectively after making beginning according to the time point drive actions device that sets.

3. sewing machine for binding buttonhole according to claim 2 is characterized in that:

Has the checkout gear that detects the speed of mainshaft;

The control device correspondence is reasonably changed by the detected speed of mainshaft of checkout gear and controls some release time that sets by input unit, and discharges upper thread and bottom line.

4. according to any described sewing machine for binding buttonhole in the claim 1～3, it is characterized in that:

Foot device has the presser feet of pushing down sewn object in order to surround the bight position that is formed on the sewn object; Can set the bight position of relative presser feet by input unit.

5. according to any described sewing machine for binding buttonhole in the claim 1～3, it is characterized in that:

Foot device has in order to surround that comprise the bight that is formed on the sewn object a plurality of make the position and the presser feet of pushing down sewn object;

A plurality of positions of making can be set by input unit, and relevant a plurality of data of making each sewing position at position can be set;

Control device when not promoting presser feet and by mobile device eedle and presser feet being relatively moved, carries out making making continuously on the position a plurality of.

6. sewing machine for binding buttonhole according to claim 4 is characterized in that:

Control device can be set the bight data of the variety classes pattern of the pattern data comprise a plurality of different bights by input unit;

Bight data according to the variety classes pattern form the bight of multiple class continuously.