CN102560914A - Rotating thread take-up lever device for sewing machine - Google Patents
Rotating thread take-up lever device for sewing machine Download PDFInfo
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- CN102560914A CN102560914A CN2011103636208A CN201110363620A CN102560914A CN 102560914 A CN102560914 A CN 102560914A CN 2011103636208 A CN2011103636208 A CN 2011103636208A CN 201110363620 A CN201110363620 A CN 201110363620A CN 102560914 A CN102560914 A CN 102560914A
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- parts
- libra
- standard grade
- reaching
- rotation
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B49/00—Take-up devices, e.g. levers, for the needle thread
- D05B49/04—Take-up devices, e.g. levers, for the needle thread rotary
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B63/00—Devices associated with the loop-taker thread, e.g. for tensioning
- D05B63/02—Loop-taker thread take-up levers
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/30—Details
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention relates to a rotating thread take-up lever device for a sewing machine, which can adjust upper thread obtaining amount generated by a thread take-up lever part in a proper main shaft angle range. The thread take-up lever device for a sewing machine is provided with a thread take-up lever part; a first thread guide device which insert an upper thread from an upper thread supply source to a thread take-up lever part; and a second thread guide part, which insert the upper thread from the thread take-up lever part to a needle, wherein periodic upper lifting and releasing synchronized with the rotation of a main shaft are performed through using the rotation of the thread take-up lever part. The rotating thread take-up lever device is provided with an adjuster, one side in a direction of enabling the angle of the upper thread to change due to the rotation of the thread take-up lever part and the rotation using the first or second thread guide devices as a center, of the upper thread path, of which abuts against the upper thread, thereby changing the path length of the upper thread, and adjusting the upper thread obtaining amount generated by the thread take-up lever part; and a position adjusting unit, which performs position adjustment on the adjuster in a plane where the upper thread path rotates.
Description
Technical field
The present invention relates to a kind of rotation sky scale device of Sewing machines.
Background technology
In the Zigzag sewing machine that the pin swing takes place, adopting with the main shaft is the Libra of the rotation Libra formula that is rotated of center.
This rotation Libra (Libra parts) is arranged on the facing side of sewing machine stand, has the wrist that prolongs along the radiation direction.And; Supply with the suture (reach the standard grade) of the line guide member of source via the line guide member of wrist to the suture needle side of rotation Libra from line; Through with the rotation of rotation Libra accordingly, between the base end part of wrist and radiation direction leading section, move back and forth, thus path of reaching the standard grade and tension variation; Thus, promote from the extraction of the supply source of reaching the standard grade and the knotting of stitching.
But; As shown in (variation of the amount of drawing in of reaching the standard grade that still produces) K of still curve among Fig. 9 and Libra curve (variation of the line taking amount of reaching the standard grade that the rotation Libra produces) T; When still breaks away from, produce the surplus A that reaches the standard grade rotation Libra reaching the standard grade of lifting that still captured in the interval of reaching the standard grade.And, under the situation of under low-tension, making especially,, therefore, produce following problems because suture is easy to be drawn out, that is, the amount of the surplus A that this is reached the standard grade increases, and the disorder of reaching the standard grade, the winding of reaching the standard grade, contacts with the parts of Sewing machines and produces broken string.
Therefore; Interval that need be in said Libra curve from the bottom dead centre M of rotation Libra to top dead-centre J; Through reaching the standard grade the amount of drawing in accordingly, the line taking amount of reaching the standard grade that the rotation Libra produces is suitably adjusted, thereby the suture surplus that is implemented in when crossing still reduces with still produces.
Therefore, in the Zigzag sewing machine of record, shown in figure 10 in patent documentation 1, be provided with at the facing side that is provided with the Sewing machines 200 that rotates Libra 201: first suture guiding portion 202, wherein insert from the supply source of reaching the standard grade to the T that reaches the standard grade that rotates Libra 201; And second suture guiding portion 203, wherein insert from rotation Libra 201 to the set in brickwork T of reaching the standard grade of suture needle.And; One of them person of first suture guiding portion 202 and second suture guiding portion 203 is provided with rotationally; Therefore; Adjusting is changed, the line taking amount of T thereby adjustment is reached the standard grade in the suture path that forms between the suture guiding portion 203 to the suture needle side on the suture guiding portion 202 of supplying with source reaching the standard grade on the suture path, rotation Libra 201, the suture path.
Patent documentation 1: real the opening of Japan put down the 04-125873 communique
Summary of the invention
But, in the Sewing machines of patent documentation 1 record, be used for suture guiding portion 202,203 that the opposite joint thread path changes adjusting and adopt the T that will reach the standard grade to insert the structure of through wires hole, shown in figure 11, reach the standard grade and limit by through wires hole 202A all the time.Therefore; If suture guiding portion 202 is carried out position adjustments, then produces following problems, promptly; Shown in the rotation Libra curve Ta shown in the double dot dash line of Fig. 9; Because the influence that the suture route diversion is regulated, in main axis rotation all angles in one week, the line taking amount of reaching the standard grade that the rotation Libra carries out changes.
For example; Libra top dead-centre J is that its phase place is set in the timing of thrusting cloth with suture needle accordingly with falling a R; But in the Sewing machines of patent documentation 1; If change through the opposite joint thread path and to regulate and the line taking amount of reaching the standard grade is adjusted, the phase place that then might make Libra top dead-centre J or fall a R also changes, and stitching is formed exert an influence and quality of sewing is reduced.
The object of the present invention is to provide a kind of rotation sky scale device of Sewing machines, it can be in a part of scope of main shaft angle, and the line taking amount of reaching the standard grade when the rotation Libra is lifted is regulated.
The invention of technical scheme 1 record is a kind of rotation sky scale device of Sewing machines, and it has: the Libra parts, and the rotation of itself and machine spindle synchronously is rotated, and has the hook of reaching the standard grade portion at leading section; The first suture guiding parts wherein insert reaching the standard grade from supply source to the said Libra parts of reaching the standard grade; And the second suture guiding parts; Wherein insert from the reaching the standard grade of said Libra parts to suture needle,, thereby synchronously periodically lift with said main axis rotation and discharge reaching the standard grade through said Libra parts rotation; The rotation sky scale device of this Sewing machines is characterised in that; Have: control agent, it is that the side on the direction that produces the angle variation is rotated at the center from go up thread path owing to said Libra parts rotation with the said first or second suture guiding parts only, with the said butt of reaching the standard grade; Change the path that this is reached the standard grade thus, the line taking amount of reaching the standard grade that said Libra parts produce is regulated; And position regulating unit, in its plane that thread path rotates on said, said control agent is carried out position adjustments.
The invention of technical scheme 2 record is characterised in that, has the identical structure of invention with technical scheme 1 record, and, said control agent be configured to can with the butt of reaching the standard grade from the said first suture guiding parts to said Libra parts.
The invention of technical scheme 3 record is characterised in that, has the identical structure of invention with technical scheme 1 record, and, said control agent be configured to have can with the butt of reaching the standard grade from said Libra parts to the said second suture guiding parts.
The invention of technical scheme 4 records is characterised in that; Has the identical structure of invention with technical scheme 1 record; And; Said control agent is set to be configured to; To through the reaching the standard grade of the last thread path between the said Libra parts and the first or second suture guiding parts, since said Libra parts from begin through bottom dead centre to be about to make through the rotation till the top dead-centre suture path from the first suture guiding parts to said Libra parts, or the zone that changes from the suture path of said Libra parts to the second suture guiding parts in, can with the butt of reaching the standard grade.
Technical scheme 5 described inventions are characterised in that; Have with technical scheme 1 to 4 in the identical structure of each described invention; And; Said position regulating unit only in scope from the bottom dead centre of Libra parts to the main shaft angle that is about to arrive top dead-centre, said control agent can with the moving range of the said butt of reaching the standard grade in carry out the position adjustments of this control agent.
The invention of technical scheme 6 records is rotation sky scale devices of a kind of Sewing machines, and it has: the Libra parts, and the main shaft of its base end part and Sewing machines links, and has the hook of reaching the standard grade portion at leading section, and these Libra parts are that the center is rotated with the base end part; The first suture guiding parts; It is positioned at the front end of Sewing machines arm; Below the rotating range of said Libra parts and with compare through the plumb line of pivot to side direction fixed configurations discretely, wherein insert reaching the standard grade from supply source to the said Libra parts of reaching the standard grade; And the second suture guiding parts; It is positioned at the front end bottom of said Sewing machines arm of the rotating range below of said Libra parts; Fixed configurations is relative with the path up and down of needle bar, wherein inserts from the reaching the standard grade of said Libra parts to suture needle, through said Libra parts rotation; Thereby synchronously periodically lift with said main axis rotation and discharge reaching the standard grade
The rotation sky scale device of this Sewing machines is characterised in that to have: control agent, and it has the holding section, and this holding section is to reaching the standard grade between the said first suture guiding parts or the second suture guiding parts and the Libra parts, only from a side and the said butt of reaching the standard grade; And position regulating unit, its can since the rotation of said Libra parts and between the said first suture guiding parts or the second suture guiding parts and the Libra parts in the plane that changes of thread path, the position of said control agent is regulated.
The effect of invention
The present invention is owing to utilizing the control agent that only rotates the side on the direction that produces the angle variation and the butt of reaching the standard grade from last thread path; Can regulate the line taking amount of reaching the standard grade that the Libra parts produce; Therefore; Can easily in the gamut that rotates of reaching the standard grade through the Libra parts, only in a part of scope, make control agent carry out butt.Therefore; Can carry out suitable adjusting; Promptly; To the main shaft angle of not expecting to change the line taking amount of reaching the standard grade that the Libra parts produce, to control agent carry out the position adjustment with not with the butt of reaching the standard grade, perhaps avoid expecting to avoid the main shaft angle of Libra top dead-centre, still point equiphase change more and carry out the position adjustments etc. of control agent.
In addition; Constitute at position regulating unit; Only can be in scope from the Libra bottom dead centre to the main shaft angle that is about to arrive the Libra top dead-centre; With the moving range of the butt of reaching the standard grade in this control agent is carried out under the situation of position adjustments, under the situation that the line taking amount of reaching the standard grade that the Libra parts is produced moving control agent is regulated, can be only in the scope till the main shaft angle through the Libra bottom dead centre to the main shaft angle that is about to arrive the Libra top dead-centre; The line taking amount of reaching the standard grade that the Libra parts are produced changes adjusting, can regulate and can or not fall at the Libra top dead-centre and locate to produce the phase place change the line taking amount of reaching the standard grade that the Libra parts produce.
Description of drawings
Fig. 1 is a side view of observing the Zigzag sewing machine this embodiment from facing side.
Fig. 2 is the profile along the face of the W-W line of Fig. 1.
Fig. 3 is the state description figure of the variation of the shortest path of reaching the standard grade till first suture guiding parts to the second suture guiding parts in this embodiment of expression, the state when the main shaft angle (A)～(G) being shown respectively being 80 °, 90 °, 150 °, 180 °, 210 °, 240 °, 270 °.
Fig. 4 is the state description figure of the variation of the shortest path of reaching the standard grade till first suture guiding parts to the second suture guiding parts in this embodiment of expression, the state when the main shaft angle (A)～(F) being shown respectively being 310 °, 330 °, 0 °, 30 °, 60 °, 70 °.
Fig. 5 is the corresponding still curve of the main shaft phase place with Sewing machines and the curve map that rotates Libra curve T in this embodiment of expression.
Fig. 6 explains in the control agent of this embodiment, the main shaft angular range is regulated the key diagram of regulating with the line taking amount of reaching the standard grade that the Libra parts are produced.
Fig. 7 is the key diagram of scope that expression should be disposed the control agent of this embodiment.
Fig. 8 is illustrated in second embodiment, with the key diagram of the configuration example of the control agent of the butt of reaching the standard grade that passes the second suture guiding parts from the Libra parts.
Fig. 9 be illustrate the amount of drawing in of reaching the standard grade that the still in the existing sewing machine produces variation the still curve and the curve map of rotation Libra curve of the variation of the line taking amount of reaching the standard grade that the Libra parts produce is shown.
Figure 10 is a side view of observing existing Zigzag sewing machine from facing side.
Figure 11 is illustrated in the suture guiding portion of patent documentation 1, reaches the standard grade all the time by the key diagram of suture guiding parts restriction.
The specific embodiment
(overall structure of working of an invention mode)
Below, based on Fig. 1 to Fig. 7, the Zigzag sewing machine 10 that has as the rotation Libra formula sky scale device of first embodiment is described.In addition, in following explanation, the level and the direction of carrying out the cloth feeding are made as X-direction, will be made as Y direction, vertical direction is made as Z-direction with the horizontal direction of cloth direction of feed quadrature.
Described Zigzag sewing machine 10 has the known gantry configuration that is made up of base portion (not shown), arm 10A and vertical body portion (not shown); Wherein, This base portion disposes container mechanism and feed mechanism; This arm 10A is configured in this base portion top, and this vertical body portion is with this base portion and arm combination.
Length direction (Y direction) leading section at said arm 10A disposes: needle bar 12 keeps suture needle 11 in its bottom; Pin swing mechanism 20, it swings needle bar 12 edges and the direction of its length direction quadrature; Reciprocating mechanism 30, it moves up and down needle bar; And rotation day scale device 40, it has Libra parts 41.
Pin swing mechanism 20 has: swing platform 22, its with link along the back shaft of Y direction 21; And known action transmission mechanism, it is not shown, utilizes the special-purpose drive source or the driving force of lower shaft, and back shaft 21 and swing platform 22 are moved back and forth along Y direction.
In addition, swing platform 22 can be slidably supported needle bar 12 along Z-direction via metal bearing.
Said main shaft 31 links with not shown sewing machine electromotor and is driven in rotation.
In addition, needle bar abut 34 can rotate and can be slidably supported on the bottom of needle bar toggle-action lever 33 along Y direction around the Y axle.Therefore, even utilizing pin swing mechanism 20 to apply along under the situation of the reciprocating action of Y direction to needle bar 12 via swing platform 22, also can be when allowing this reciprocating action, apply by 34 pairs of needle bars 12 of needle bar abut and to move up and down.
In addition, though omit explanation, this Zigzag sewing machine 10 has the mechanism that carries out the known configurations such as cloth feed mechanism of cloth feeding with the container mechanism of winding of reaching the standard grade and roll off the production line, along X-direction.
(day scale device)
A rotation day scale device 40 has Libra parts 41, armature 42, connection shaft 43, the first suture guiding parts 44, the second suture guiding parts 45, over cap 46, control agent 51, and position regulating unit 52.
The two ends of connection shaft 43 link armature 42 and main shaft 31, and armature 42 and main shaft 31 are rotated with linking.
The base end part of Libra parts 41 is fixedly supported on the armature 42, with clockwise direction (the arrow R direction) rotation of armature 42 along Fig. 1.The leading section of Libra parts 41 extends to radial outside from pivot.
In addition, have a pair of pawl 41a, 41b as suture hook portion at the leading section of Libra parts 41, its both direction to the tangential direction of rotation circular arc extends.Each pawl 41a, 41b are along with being bent to form to the direction away from panel 60 towards leading section.Through forming said shape, thus the leading section of Libra parts 41 towards below the time, the T that reaches the standard grade is around the rear side of going into each pawl 41a, 41b and by hook, the T that prevents to reach the standard grade comes off from Libra parts 41.
The first suture guiding parts 44 are positioned at the front end of Sewing machines arm and with respect on right-hand sewing machine frame surface of Fig. 1 of operator; Be positioned at the below of the rotating range of said Libra parts 41, and compare with the plumb line of pivot through Libra parts 41 to side fixed configurations discretely.In other words, the first suture guiding parts 44 with after the second suture guiding parts 45 stated compare to a side direction and dispose discretely.Insert the T that reaches the standard grade in the 1st suture guiding parts 44 from supply source to the Libra parts 41 of reaching the standard grade.
In addition, the 2nd suture guiding parts 45 be positioned at said Libra parts 41 rotating range below said panel 60 the bottom, be the front end bottom of the arm of Sewing machines, fixed configurations is roughly relative with the path up and down of needle bar 12.Insert from the T that reaches the standard grade of the needle bar stringing portion 13 of Libra parts 41 to suture needle 12 in the second suture guiding parts 45.
Above-mentioned suture guiding parts 44,45 all form configurations, that is, the T that reaches the standard grade is inserted along in the through wires hole (not shown) of the path opening of reaching the standard grade, and guiding is reached the standard grade so that its scope through fixed width all the time.
In addition, in Libra parts 41, the end edge portion place of (downstream) side is formed with recess 41c before near the direction of rotation being positioned at its base end part.Said recess 41c does; Near the main axis rotation angle is about to be 90 °, (the main axis rotation angle of needle bar top dead-centre is made as 0 °), is the timing that suture needle 11 begins to run through cloth; Through reaching the standard grade the T built on recess 41c via what the side edge part of Libra parts 41 passed the second suture guiding parts 45 from the first suture guiding parts 44; Thereby when discharging the tension force of the T that reaches the standard grade that lifts by Libra parts 41; Make the T that reaches the standard grade surplus occur, thus, the T that reaches the standard grade when making suture needle 11 run through cloth has surplus (with reference to Fig. 3 (B)).Reaching the standard grade the T built in recess 41c the time, and the main axis rotation angle that the tension force of the T that reaches the standard grade that Libra parts 41 are lifted discharges is for falling a R (with reference to Fig. 5).
Carry out control agent 51 position adjustments position regulating unit 52 by base portion 53, slotted hole 53a, hold-down screw 54, and spline pin 55 constitute.
The slotted hole 53a that base portion 53 forms along its length inserts said hold-down screw 54 in this slotted hole 53a.In addition, the chimeric spline pin 55 that the convex that protrudes from the panel 60 is arranged in slotted hole 53a.Through hold-down screw 54 is lax; Utilize spline pin 55 with hold-down screw 54 channeling conducts and control agent 51 is moved along slotted hole 53a, thus can with the position of control agent 51 the rotation owing to said Libra parts 41 make said path change of reaching the standard grade the plane, be to regulate in the plane of panel 60.
Based on Fig. 3 to Fig. 6, the variation in the shortest suture path of reaching the standard grade that utilizes 41 generations of Libra parts is described here.
In addition, the double dot dash line of each figure is to suppose not exist the shortest path of reaching the standard grade that illustrates under the situation of control agent 51 among Fig. 4, in addition, in Fig. 3 and Fig. 4, omits shown position regulon 52.
In addition, in Fig. 5, rotation Libra curve T illustrates the situation that does not have control agent 51, and rotation Libra curve Tx (chain-dotted line) illustrates the situation that the line taking amount of reaching the standard grade of utilizing 51 pairs of Libra parts of control agent to produce is regulated.
In addition, in the explanation in the shortest suture path of this paragraph, do not consider the influence that produces owing to the control agent 51 (holding section 51A) and the T butt of reaching the standard grade.
And; In this Sewing machines 10; The shortest suture path from first suture guiding parts 44 to the Libra parts 41 (being designated hereinafter simply as " the shortest suture path ") at Libra bottom dead centre M place is set at, (consistent with the line segment L1 that pivot with the first suture guiding parts 44 and Libra parts 41 links with the direction in the about 70 ° of the shortest suture paths located of main shaft angle.With reference to Fig. 6) just in time overlap.
And; Through the shortest suture path behind the Libra bottom dead centre M; Its slope with respect to line segment L1 is left (counterclockwise) variation of middle mind-set Fig. 6 with the first suture guiding parts 44; Locate for about 0 ° in the main shaft angle, the angle that the shortest suture path forms with respect to line segment L1 is that the variation of left (counterclockwise) angle becomes maximum.The straight line in the shortest suture path when the θ a of Fig. 6 representes to be changed to maximum along the angle to left (counterclockwise).
And if surpass maximum left angle change location θ a, the slope in then the shortest suture path right-hand (clockwise direction) in Fig. 6 thereafter changes; Locate for about 80 ° in the main shaft angle; Through Libra top dead-centre J (the θ b of Fig. 6 is the line segment along the suture path of Libra top dead center), after this, through the angle variation of right-hand (clockwise direction) and left (counterclockwise); Locate for about 270 ° in the main shaft angle; Angle promptly right-hand (clockwise direction) angle that the shortest suture path forms with respect to line segment L1 changes and becomes maximum, and then, the shortest suture path arrives Libra bottom dead centre M to left (counterclockwise) through the over-angle variation once more.
Require control agent 51 in the following manner the line taking amount of Libra parts 41 to be regulated; Promptly; Avoid at Libra top dead-centre J and fall a R place T that reaches the standard grade is exerted an influence, and reduce the T amount of drawing in of reaching the standard grade of the still generation at still point (still discharges the main axis rotation angle of reaching the standard grade) G place more and the poor of T line taking amount of reaching the standard grade that Libra parts 41 produce as far as possible.
In this Sewing machines 10, be set at, control agent 51 for example is configured to and can is beginning from Libra bottom dead centre M to the scope that is about to arrive Libra top dead-centre J and reach the standard grade butt.
In Fig. 7, θ c is along the straight line in the shortest suture path of the T that reaches the standard grade under the anglec of rotation of still point G (Fig. 5) more.
In order to make control agent 51 before and after the position adjustments, control agent 51 is configured in the zone by straight line θ b and straight line θ c clamping beginning from Libra bottom dead centre M to the rotation angle range that is about to arrive Libra top dead-centre J and reaching the standard grade butt.
In addition, preferably control agent 51 is configured in the outside of the rotating range H of Libra parts 41, interferes with Libra parts 41 avoiding.
According to the above, preferred control agent 51 was configured in by (the line top that comprises straight line L1 and straight line θ c does not comprise the line top of circular arc H) in straight line L1, straight line θ c and the region surrounded E of circular arc H institute.In addition, preferred holding section 51A can adjusting position scope also drop in the scope of area E.
In this embodiment, make control agent 51 to carry out position adjustments along the line top of straight line L1.
In addition, slotted hole 53a is parallel with line segment L1.Control agent 51 can make the holding section 51A edge direction parallel with line segment L1 all the time hold-down screw 54 being relaxed and carrying out under the situation of position adjustments, in the scope that does not break away from area E, moves adjusting.
Shown in above-mentioned, be configured; Control agent 51 can make holding section 51A only in about 310 °～70 ° scope of main shaft angle with from the T butt of reaching the standard grade of first suture guiding parts 44 to the Libra parts 41, the line taking amount of the T that reaches the standard grade that can only produce Libra parts 41 in this main axis rotation angle interval is regulated.
In addition; Can regulate at the enterprising line position of above-mentioned direction through making control agent 51 (holding section 51A); Thereby can regulate the increase and decrease of the line taking amount of reaching the standard grade that the Libra parts produce so that it increases, and need not to be used in the main shaft angular interval change that the line taking amount of reaching the standard grade that the Libra parts are produced is regulated.
(action effect of day scale device)
Based on Fig. 5, the concrete application and the effect thereof of the line taking amount adjustment of the T that reaches the standard grade that rotation day scale device 40 is produced is described.
In Zigzag sewing machine 10, special under the situation that the tension force of the T that will reach the standard grade is set lowlyer, cross still (the G point among the rotation Libra curve K of Fig. 5: be easy to generate the suture disorder in the time of about 350 ° of main shaft angle) what still discharged the T that reaches the standard grade.Therefore, need cross still and regularly in the scope of interior regulation main axis rotation angle, adjust comprising, the difference of the T amount of drawing in of reaching the standard grade that the line taking amount of reaching the standard grade that Libra parts 41 produce produces with respect to still is further diminished.
On the other hand; Because at the maximum Libra top dead-centre J of the T line taking amount of reaching the standard grade that Libra parts 41 are produced and the fall some R place of T built that reach the standard grade at the recess 41c place of Libra parts 41; Easily stitching is formed and exert an influence; Therefore, require to carry out the phase place (main axis rotation angle) of above-mentioned action and the T line taking amount of reaching the standard grade that produces at these phase place place Libra parts does not produce change.In addition, in this Sewing machines 10, be about 80 ° with the phase settings of Libra top dead-centre J, will fall a R and be set at about 90 °.
Lax hold-down screw 54 moves 51 along the line sections L1 of control agent and adjusts the position, and the line taking amount of the T that reaches the standard grade that thus Libra parts 41 is produced increases and decreases adjusting.In this case, increase, reduce through move the line taking amount of reaching the standard grade that Libra parts 44 are produced to direction near the first suture guiding parts 44 through move the T line taking amount of reaching the standard grade that Libra parts 41 are produced to direction away from first guide member 44.
And, after confirming the position of control agent 51, fastening hold-down screw 54 and the position of secured adjusted body 51.
When making; From the main shaft angle about 310 ° to the scope of 70 ° of main shaft angles; Holding section 51A with from the T butt of reaching the standard grade of first suture guiding parts 44 to the Libra parts 41; Through the shortest suture path distance being increased, thereby the line taking amount of the T that reaches the standard grade that Libra parts 41 produce is increased because the T that reaches the standard grade is crooked.Therefore, can obtain rotation Libra curve Tx shown in Figure 5, can when crossing still, reduce the reach the standard grade amount of drawing in and the poor of T line taking amount of reaching the standard grade that Libra parts 41 produce that still produces, suppress the generation that suture moves.
As stated; In Zigzag sewing machine 10; Make when being utilized in Libra through bottom dead centre holding section 51A from Libra direction of rotation downstream (Fig. 1 left) with from the T butt of reaching the standard grade of first suture guiding parts 44 to the Libra parts 41; Thereby the line taking amount of the T that reaches the standard grade that can produce Libra parts 41 is regulated, and therefore, for example can avoid Libra top dead-centre J and only (for example comprise the main shaft angle wanting the line taking amount that the Libra parts produce is regulated with falling a R; Main axis rotation angle when crossing still) in interior a part of scope, easily make holding section 51A carry out butt.
Therefore, can suitably regulate by the carrying out corresponding, and can not produce unnecessary influence making with avoiding purposes such as suture moves.
In addition; Because the base portion 53 of position regulating unit 52 can be supported movably along the prescribed direction straight line with respect to hold-down screw 54; So can increase and decrease adjusting to the line taking amount of reaching the standard grade that the Libra parts produce; And need not to be used in the main shaft angular interval change that the line taking amount of reaching the standard grade of Libra parts generation is regulated, thus, can more convenient and promptly regulate operation.
(second embodiment)
Said control agent 51 be configured to from the butt of reaching the standard grade of first suture guiding parts 44 to the Libra parts 41, but be not limited thereto.
That is, also can second embodiment as shown in Figure 8 shown in, control agent 51 is configured to, holding section 51A is to the T that reaches the standard grade from Libra parts 41 to second suture guiding parts 45, (Fig. 1 left) carries out butt from Libra direction of rotation downstream.
And; In this case; Also can by along Libra bottom dead centre place from Libra parts 41 to second suture guiding parts 45 the shortest thread path straight line (comprising this straight line top), in the straight line (comprising this straight line top) of going up thread path from Libra parts 41 to second suture guiding parts 45 the shortest of still point more and the zone that surrounds into along the circular arc (the line top that does not comprise this circular arc) of the rotating range of Libra parts 41; Configuration adjustment body 51, and in this zone, carry out position adjustments.
Specifically; Position regulating unit 52A constitutes has base portion 53A, the hold-down screw 54A of fastening base portion 53A and the spline pin 55A of base portion 53A that supports control agent 51; The straight line L2 direction that base portion 53A can link along the pivot with the fixed position of control agent 51 and said Libra parts is carried out the shift position of control agent 51 and is regulated.
And; Preferably constitute, partly locate to dispose holding section 51A, and base portion 53A can move with above-mentioned straight line L2 abreast at straight line L2; Wherein, this straight line L2 is for to locate from the shortest path of reaching the standard grade of Libra parts 41 to second suture guiding parts 45 for about 70 ° in the main shaft angle.
And; Even make under holding section 51A and the situation constituting as stated, also can obtain and across the roughly the same effect of situation of the butt of reaching the standard grade between the Libra parts 41 and the first suture guiding parts 44 across the butt of reaching the standard grade between the Libra parts 41 and the second suture guiding parts 45.
(other)
In addition, position regulating unit 52 only forms can move adjusting to control agent 51 along fixing straight ahead direction, but also can form on the plane of panel, in area E, at random carries out position adjustments.In this case, can more easily utilize the scope of the main shaft angle that control agent 51 change is used for the line taking amount of reaching the standard grade that the Libra parts produce is regulated.
Claims (6)
1. the rotation sky scale device of a Sewing machines, it has:
The Libra parts, the rotation of the main shaft of itself and Sewing machines synchronously is rotated, and has the hook of reaching the standard grade portion at leading section;
The first suture guiding parts wherein insert reaching the standard grade from supply source to the said Libra parts of reaching the standard grade; And
The second suture guiding parts wherein insert from the reaching the standard grade of said Libra parts to suture needle,
Through the rotation of said Libra parts, thereby synchronously periodically lift with said main axis rotation and discharge reaching the standard grade,
The rotation sky scale device of this Sewing machines is characterised in that to have:
Control agent; It is that the side on the direction that produces the angle variation is rotated at the center from go up thread path owing to said Libra parts rotation with the said first or second suture guiding parts only; With the said butt of reaching the standard grade; Change the path that this is reached the standard grade thus, the line taking amount of reaching the standard grade that said Libra parts produce is regulated; And
Position regulating unit in its plane that thread path rotates on said, carries out position adjustments to said control agent.
2. the rotation sky scale device of Sewing machines according to claim 1 is characterized in that,
Said control agent be configured to can with from the said first suture guiding parts to the butt of reaching the standard grade of said Libra parts.
3. the rotation sky scale device of Sewing machines according to claim 1 is characterized in that,
Said control agent be configured to have can with the butt of reaching the standard grade from said Libra parts to the said second suture guiding parts.
4. the rotation sky scale device of Sewing machines according to claim 1 is characterized in that,
Said control agent is set is configured to,
To through the reaching the standard grade of the last thread path between the said Libra parts and the first or second suture guiding parts,
Since said Libra parts from begin through bottom dead centre to be about to make through the rotation till the top dead-centre suture path from the first suture guiding parts to said Libra parts, or the zone that changes from the suture path of said Libra parts to the second suture guiding parts in, can with the butt of reaching the standard grade.
5. according to the rotation sky scale device of each described Sewing machines in the claim 1 to 4, it is characterized in that,
Said position regulating unit only in scope from the bottom dead centre of Libra parts to the main shaft angle that is about to arrive top dead-centre, said control agent can with the moving range of the said butt of reaching the standard grade in carry out the position adjustments of this control agent.
6. the rotation sky scale device of a Sewing machines, it has:
The Libra parts, the main shaft of its base end part and Sewing machines links, and has the hook of reaching the standard grade portion at leading section, and the main shaft of these Libra parts and said Sewing machines links and is that the center is rotated with the base end part;
The first suture guiding parts; It is positioned at the front end of Sewing machines arm; Below the rotating range of said Libra parts and with compare through the plumb line of pivot to side direction fixed configurations discretely, wherein insert reaching the standard grade from supply source to the said Libra parts of reaching the standard grade; And
The second suture guiding parts, it is positioned at the front end bottom of said Sewing machines arm of the rotating range below of said Libra parts, and fixed configurations is relative with the path up and down of needle bar, wherein inserts from the reaching the standard grade of said Libra parts to suture needle,
Through the rotation of said Libra parts, thereby synchronously periodically lift with said main axis rotation and discharge reaching the standard grade,
The rotation sky scale device of this Sewing machines is characterised in that to have:
Control agent, it has the holding section, and this holding section is to reaching the standard grade between the said first suture guiding parts or the second suture guiding parts and the Libra parts, only from a side and the said butt of reaching the standard grade; And
Position regulating unit, its can since the rotation of said Libra parts and between the said first suture guiding parts or the second suture guiding parts and the Libra parts in the plane that changes of thread path, the position of said control agent is regulated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010255437A JP5740140B2 (en) | 2010-11-16 | 2010-11-16 | sewing machine |
| JP2010-255437 | 2010-11-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102560914A true CN102560914A (en) | 2012-07-11 |
| CN102560914B CN102560914B (en) | 2015-08-12 |
Family
ID=46269356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110363620.8A Active CN102560914B (en) | 2010-11-16 | 2011-11-16 | The rotation sky scale device of Sewing machines |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5740140B2 (en) |
| KR (1) | KR20120052889A (en) |
| CN (1) | CN102560914B (en) |
| TW (1) | TWI589748B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108085885A (en) * | 2016-03-07 | 2018-05-29 | 南安市鑫灿品牌运营有限公司 | Sewing machine with swing arm wire picking device |
| CN111172678A (en) * | 2018-11-09 | 2020-05-19 | Juki株式会社 | Staggered sewing machine |
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| US4757776A (en) * | 1986-03-20 | 1988-07-19 | Brother Kogyo Kabushiki Kaisha | Thread pull-out mechanism for a sewing machine |
| JPH0779897B2 (en) * | 1990-01-10 | 1995-08-30 | ジューキ株式会社 | Thread tension control device for button sewing cycle sewing machine |
| JPH08309063A (en) * | 1995-05-22 | 1996-11-26 | Juki Corp | Blade type rotary needle thread take-up |
| CN1600933A (en) * | 2003-09-24 | 2005-03-30 | 兄弟工业株式会社 | Thread ram means of sewing machine |
| CN101220548A (en) * | 2007-01-11 | 2008-07-16 | Juki株式会社 | Sewing line guide member of sewing machine |
| CN101372796A (en) * | 2007-08-20 | 2009-02-25 | 大和缝纫机制造株式会社 | Thread adjusting device of sewing machine |
-
2010
- 2010-11-16 JP JP2010255437A patent/JP5740140B2/en not_active Expired - Fee Related
-
2011
- 2011-11-16 TW TW100141819A patent/TWI589748B/en not_active IP Right Cessation
- 2011-11-16 CN CN201110363620.8A patent/CN102560914B/en active Active
- 2011-11-16 KR KR1020110119467A patent/KR20120052889A/en not_active Application Discontinuation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4757776A (en) * | 1986-03-20 | 1988-07-19 | Brother Kogyo Kabushiki Kaisha | Thread pull-out mechanism for a sewing machine |
| JPH0779897B2 (en) * | 1990-01-10 | 1995-08-30 | ジューキ株式会社 | Thread tension control device for button sewing cycle sewing machine |
| JPH08309063A (en) * | 1995-05-22 | 1996-11-26 | Juki Corp | Blade type rotary needle thread take-up |
| CN1600933A (en) * | 2003-09-24 | 2005-03-30 | 兄弟工业株式会社 | Thread ram means of sewing machine |
| CN101220548A (en) * | 2007-01-11 | 2008-07-16 | Juki株式会社 | Sewing line guide member of sewing machine |
| CN101372796A (en) * | 2007-08-20 | 2009-02-25 | 大和缝纫机制造株式会社 | Thread adjusting device of sewing machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108085885A (en) * | 2016-03-07 | 2018-05-29 | 南安市鑫灿品牌运营有限公司 | Sewing machine with swing arm wire picking device |
| CN108103679A (en) * | 2016-03-07 | 2018-06-01 | 南安市鑫灿品牌运营有限公司 | Sewing machine with swing arm wire picking device |
| CN108103679B (en) * | 2016-03-07 | 2020-10-27 | 嘉兴市良友制衣有限公司 | Sewing machine with swing arm type thread take-up device |
| CN111172678A (en) * | 2018-11-09 | 2020-05-19 | Juki株式会社 | Staggered sewing machine |
| CN111172678B (en) * | 2018-11-09 | 2024-03-01 | Juki株式会社 | Staggered sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI589748B (en) | 2017-07-01 |
| KR20120052889A (en) | 2012-05-24 |
| TW201241262A (en) | 2012-10-16 |
| CN102560914B (en) | 2015-08-12 |
| JP5740140B2 (en) | 2015-06-24 |
| JP2012105741A (en) | 2012-06-07 |
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