CN105113152A - Sewing machine - Google Patents

Sewing machine Download PDF

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Publication number
CN105113152A
CN105113152A CN201510640000.2A CN201510640000A CN105113152A CN 105113152 A CN105113152 A CN 105113152A CN 201510640000 A CN201510640000 A CN 201510640000A CN 105113152 A CN105113152 A CN 105113152A
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China
Prior art keywords
axle
retainer
rod
feed
shaft
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Granted
Application number
CN201510640000.2A
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Chinese (zh)
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CN105113152B (en
Inventor
李创
潘建国
洪志敏
杨斌
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Jack Sewing Machine Co Ltd
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Jack Sewing Machine Co Ltd
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Priority to CN201510640000.2A priority Critical patent/CN105113152B/en
Publication of CN105113152A publication Critical patent/CN105113152A/en
Application granted granted Critical
Publication of CN105113152B publication Critical patent/CN105113152B/en
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Abstract

The invention provides a sewing machine. The sewing machine comprises an upper shaft driven by a first motor, a needle bar take-up mechanism arranged at one end of the upper shaft, a lower shaft parallel to the upper shaft, a thread take-off mechanism arranged at one end of the lower shaft, a feed dog frame and a feed dog fixed to the feed dog frame. The upper shaft is connected with the lower shaft through a drive unit. The upper shaft is connected with one end of the feed dog frame through a feed dog lifting mechanism. The sewing machine further comprises a second motor connected with the other end of the feed dog frame through a cloth feed mechanism. The feed dog lifting mechanism and the cloth feed mechanism which form a feed mechanism are driven by the two motors respectively, and therefore the output amount of the cloth feed mechanism can be regulated by regulating the output amount of the second motor, the movement tracks of the feed dog frame and the feed dog can be conveniently changed, and sewing of various patterns can be achieved.

Description

Sewing machines
Technical field
The present invention relates to a kind of garment sewing equipment, particularly relate to a kind of Sewing machines.
Background technology
Sewing machines is of a great variety, and comprise flat seam machine, overlock machine, chain seam machine, flat seaming machine etc., wherein the utilization rate of flat seam machine is the highest.Sewing machines comprises needle bar mechanism, hook line mechanism, thread take-up mechanism, feed mechanism, winding mechanism, feeding pressure mechanism etc., and the mutual reasonably routing motion of each mechanism, periodic duty, unites by a seam sewing.At present, most of Sewing machines only uses a motor to drive each mechanism kinematic, therefore the movement locus of feeding tooth also just only has one, therefore, the Sewing machines of this structure can only realize a kind of sewing track, therefore freely can not control cloth feed amount, is also just not easy to sew various pattern.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of feeding toilet article to have the Sewing machines of multi-motion track.
For achieving the above object, the invention provides a kind of Sewing machines, comprise by the first motor-driven upper axle, the shank thread take-up mechanism being located at upper shaft end, the lower shaft paralleled with upper axle, the hook line mechanism being located at lower shaft end, retainer and the feeding tooth that is fixed on retainer, described upper axle is connected with lower shaft by driver element, upper axle is connected with one end of retainer by Tai Ya mechanism, also comprise the second motor, described second motor is connected with the other end of retainer by cloth feeding mechanism.
Further, described Tai Ya mechanism comprises the feed lifting rock shaft paralleled with upper axle, described upper axle to be connected with feed lifting rock shaft by the first gear unit and to drive feed lifting rock shaft line centered by own axes to swing back and forth, and described feed lifting rock shaft to be connected with retainer by the second gear unit and to drive retainer to move back and forth up and down.
In technique scheme, described first gear unit has two kinds of preferred embodiments, is respectively:
Described first gear unit comprises the first eccentric cam or the capacity eccentric bearing be fixed on axle, is fixed on lifting tooth rear crank and lifting tooth connecting rod on feed lifting rock shaft, described lift tooth connecting rod upper end and described first eccentric cam or capacity eccentric bearing rotatable engagement, lower end and the described tooth rear crank of lifting of lifting tooth connecting rod are hinged.
Or, described first gear unit comprises first connecting rod, second connecting rod and the first slide block, one end of described first connecting rod is fixed on axle, one end of described second connecting rod is fixed on feed lifting rock shaft, and described first slide block is articulated with the other end of first connecting rod and is enclosed within slidably on second connecting rod.
In technique scheme, described second gear unit also has two kinds of preferred embodiments, is respectively:
Described second gear unit comprises feed lifting rock fork-shaped crank and is articulated with the second slide block of retainer end, one end of described feed lifting rock fork-shaped crank is fixed on feed lifting rock shaft, the other end of feed lifting rock fork-shaped crank offers the chute that the radial direction along feed lifting rock shaft extends, and described second slide block to be located in chute and can be moved around along the bearing of trend of chute.
Or described second gear unit comprises and is fixed on the second eccentric cam on feed lifting rock shaft and third connecting rod, and one end and second eccentric cam of described third connecting rod are hinged, and the other end and the retainer of third connecting rod are hinged.
Further, described cloth feeding mechanism comprises the feed spool, drive rod, intermediate bar, take-off lever and the retainer seat that parallel with feed lifting rock shaft, one end of described drive rod is fixed on the output shaft of the second motor, the two ends of described intermediate bar respectively at the other end of drive rod and one end of take-off lever hinged, the described take-off lever other end and retainer seat are all fixed on feed spool, described retainer seat and retainer hinged.
Preferably, described retainer seat and retainer are hinged by a cam pin, described cam pin comprises the first axle part, the second axle part and the 3rd axle portion successively, described the first axle part and the 3rd axle portion are arranged with one heart, the first axle part and the second axle part eccentric setting, described the first axle part and the 3rd axle portion are all rotatably connected in retainer seat, and described the second axle part is rotatably connected in retainer.
Preferably, described take-off lever is fixedly connected with retainer seat.
Further, described cloth feeding mechanism can also by the following technical solutions: cloth feeding mechanism comprises drive rod, intermediate bar and is rotatably supported in the retainer seat in baseplate of sewing machine, one end of described drive rod is fixed on the output shaft of the second motor, and the two ends of described intermediate bar are hinged respectively at the other end of drive rod and retainer seat.
Preferably, towards a direction and the unidirectional swing of opposite direction once, before and after described retainer, reciprocating swing once for the output shaft of described second motor.
As mentioned above, the Sewing machines that the present invention relates to, has following beneficial effect:
This Sewing machines uses the first motor driving needle linkage, thread take-up mechanism, rotary shuttle mechanism and Tai Ya mechanism simultaneously, use the second motor to drive cloth feeding mechanism separately simultaneously, namely two motors are used to drive the Tai Ya mechanism and cloth feeding mechanism forming feed mechanism respectively in the application, therefore, by regulating the output quantity of the second motor to regulate the output quantity of cloth feeding mechanism, and then the movement locus of retainer and feeding tooth can be changed easily, realize making of multiple patterns.
Accompanying drawing explanation
Fig. 1 is the structural representation of the application.
Fig. 2 is that the A of Fig. 1 encloses enlarged drawing.
Fig. 3 is the connection diagram of feed spool, feed lifting rock shaft and retainer in Fig. 1.
Fig. 4 is another embodiment of the first gear unit in the application.
Fig. 5 is another embodiment of the second gear unit in the application.
Fig. 6 is that the B of Fig. 1 encloses enlarged drawing.
Fig. 7 is the structural representation of thread take-up crank in Fig. 1.
Fig. 8 is the structural representation of thread take-up tension lever in Fig. 1.
Fig. 9 is another embodiment of the application.
Figure 10 is that the C of Fig. 9 encloses enlarged drawing.
Element numbers explanation
Axle 19 pin on 1
2 first eccentric cam 20 first connecting rods
3 first motor 21 second connecting rods
4 lift tooth connecting rod 22 first slide block
5 lift tooth rear crank 23 second eccentric cam
6 feed lifting rock shaft 24 third connecting rods
7 feed lifting rock fork-shaped crank 25 lower shafts
71 chute 26 vertical pivots
8 retainer 27 first bevel gears
9 feeding tooth 28 second bevel gears
10 retainer seat 29 third hand tap gears
11 cam pins 30 the 4th bevel gear
111 the first axle part 31 thread take-up cranks
112 the second axle parts 311 the 4th axle portion
113 the 3rd axle portions of axle portion 312 the 5th
114 rotation slot 32 needle bar cranks
12 needle plate 33 thread take-up tension levers
121 tooth hole 331 through wires holes
122 pin hole 34 line-choosing connecting rods
13 take-off lever 35 bearing pins
14 intermediate bar 36 shank connecting rods
15 drive rod 37 guide rails
16 second motor 371 gathering sills
17 feed spools 38 the 3rd slide block
18 second slide block 39 anchor ears
181 slider body 40 eedles
182 slide block flange 41 rotating shuttles
42 shank 100 first gear units
300 driver element 200 second gear units
101 retainer seat body 102 transmission arms
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present invention and effect easily.
Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
In following examples, all directions are defined as follows: described front is to referring to the direction of Sewing machines in the face of people, described rear is to referring to the direction of Sewing machines back to people, described left direction is towards the direction of head of sewing machine, described right direction refers to the direction towards Sewing machines tail, described upper direction refers to towards the direction of Sewing machines upper end, and described lower direction refers to towards the direction of Sewing machines lower end.
The application provides a kind of Sewing machines, as Fig. 1, shown in Fig. 2 and Fig. 6, comprise axially extended upper axle 1 in the lateral direction, the lower shaft 25 paralleled with upper axle 1, needle plate 12, retainer 8, be fixed on the feeding tooth 9 on retainer 8, and the first motor 3 for driving upper axle 1 to rotate, described needle plate 12 offers the pin hole 122 holding eedle 40 and penetrate or upwards pass downwards, and the tooth hole 121 to be oppositely arranged with feeding tooth about 9, described tooth hole 121 length is in the longitudinal direction greater than feeding tooth 9 length in the longitudinal direction, move back and forth to allow and move back and forth up and down before and after feeding tooth 9 is in tooth hole 121, thus realize feeding tooth 9 and drive sewing to move forward or backward.Further, the end of described upper axle 1 is provided with shank thread take-up mechanism, for driving shank 42 and eedle 40 to move back and forth up and down and drive thread take-up tension lever 33 to do the circumvallate motion of similar willow leaf, to realize for line and take-up; The end of described lower shaft 25 is provided with hook line mechanism, upper axle 1 is connected with lower shaft 25 by driver element 300, rotate for driving the rotating shuttle 41 in hook line mechanism, upper axle 1 to be connected with the front end of retainer 8 by Tai Ya mechanism and to drive retainer 8 to move back and forth up and down, also comprise the second motor 16, described second motor 16 is connected by cloth feeding mechanism with the rear end of retainer 8 and drives before and after retainer 8 and moves back and forth, and described Tai Ya mechanism and cloth feeding mechanism form the feed mechanism of Sewing machines.
This Sewing machines uses the first motor 3 driving needle lever take-up mechanism, hook line mechanism and Tai Ya mechanism simultaneously, use the second motor 16 to drive cloth feeding mechanism separately simultaneously, namely two motors are used to drive the Tai Ya mechanism and cloth feeding mechanism forming feed mechanism respectively in the application, therefore, by regulating the output quantity of the second motor 16 to regulate the output quantity of cloth feeding mechanism, and then the movement locus of retainer 8 and feeding tooth 9 can be changed easily, realize making of multiple patterns.In addition, by regulate the output quantity of the second motor 16 also can realize easily needle gage regulate, just stitch time transfer sewing backward, refund seam time transfer the actions such as sewing forward.
Further, as shown in Figure 1, described Tai Ya mechanism comprises the feed lifting rock shaft 6 paralleled with upper axle 1, upper axle 1 is rotatably supported in sewing machine case, upper axle 1 to be connected with feed lifting rock shaft 6 by the first gear unit 100 and to drive feed lifting rock shaft 6 line centered by own axes to swing back and forth, and described feed lifting rock shaft 6 to be connected with retainer 8 by the second gear unit 200 and to drive retainer 8 to move back and forth up and down.
In technique scheme, described first gear unit 100 has two kinds of preferred embodiments, is respectively:
Embodiment one, as shown in Figure 1, described first gear unit 100 comprise be fixed on the first eccentric cam 2 on axle 1 or capacity eccentric bearing, one end is fixed on lifting tooth rear crank 5 and lifting tooth connecting rod 4 on feed lifting rock shaft 6, described lift tooth connecting rod 4 upper end and described first eccentric cam 2 or capacity eccentric bearing rotatable engagement, lower end and the described other end lifting tooth rear crank 5 of lifting tooth connecting rod 4 are hinged.In the application, upper axle 1 sets firmly described first eccentric cam 2; First eccentric cam 2 comprise the first connecting portion of being connected with upper axle 1 and with the second connecting portion lifted tooth connecting rod 4 and be connected, described first connecting portion and the second connecting portion eccentric setting, thus the center of lifting tooth connecting rod 4 upper end is not overlapped with the center of upper axle 1, therefore when the first motor 3 drives upper axle 1 to rotate, upper axle 1 drives the first eccentric cam 2 synchronous axial system, rotate centered by the above axle 1 in the upper end of lifting tooth connecting rod 4 be connected with the first eccentric cam 2, therefore lift tooth connecting rod 4 and do approximate moving back and forth up and down; Lifting tooth connecting rod 4 drives the end of lifting tooth rear crank 5 synchronously to move back and forth up and down, thus makes feed lifting rock shaft 6 line swinging back and forth in certain angular range centered by own axes.
Embodiment two, as shown in Figure 4, described first gear unit 100 comprises first connecting rod 20, second connecting rod 21 and the first slide block 22, one end of described first connecting rod 20 is fixed on axle 1, one end of described second connecting rod 21 is fixed on feed lifting rock shaft 6, described first slide block 22 is articulated with the other end of first connecting rod 20 and is enclosed within second connecting rod 21 slidably, and described second connecting rod 21 extends along the radial direction of feed lifting rock shaft 6.Upper axle 1 drives the upper end of first connecting rod 20 to rotate, therefore line swings back and forth centered by the axis of the above axle 1 in the lower end of first connecting rod 20, and drive second connecting rod 21 line centered by the axis of feed lifting rock shaft 6 to swing back and forth by the first slippage of slide block 22 on second connecting rod 21, thus drive feed lifting rock shaft 6 line swinging back and forth in certain angular range centered by own axes, namely go up axle 1 and swung by slider-crank mechanism driving feed lifting rock shaft 6.
Described second gear unit 200 also has following two kinds of preferred embodiments:
Embodiment one, as shown in Figure 2, described second gear unit 200 comprises feed lifting rock fork-shaped crank 7 and is articulated with the second slide block 18 of retainer 8 end, one end of described feed lifting rock fork-shaped crank 7 is fixed on feed lifting rock shaft 6, the other end of feed lifting rock fork-shaped crank 7 offers the chute 71 that the radial direction along feed lifting rock shaft 6 extends, and described second slide block 18 to be located in chute 71 and can be moved around along the bearing of trend of chute 71.Feed lifting rock shaft 6 drives one end synchronous hunting of feed lifting rock fork-shaped crank 7, synchronously, drives retainer 8 synchronously to move back and forth up and down together with feeding tooth 9 by the second slide block 18 with cooperatively interacting of chute 71.
Embodiment two, as shown in Figure 5, described second gear unit 200 comprises and is fixed on the second eccentric cam 23 on feed lifting rock shaft 6 and third connecting rod 24, one end and second eccentric cam 23 of described third connecting rod 24 are hinged, and the other end and the retainer 8 of third connecting rod 24 are hinged.Second eccentric cam 23 comprises the 3rd connecting portion be connected with feed lifting rock shaft 6 and the 4th connecting portion be connected with third connecting rod 24, described 3rd connecting portion and the 4th connecting portion eccentric setting, thus the center of third connecting rod 24 lower end is not overlapped with the center of feed lifting rock shaft 6; Therefore when feed lifting rock shaft 6 drives the second eccentric cam 23 to swing back and forth, the lower end of third connecting rod 24 swings back and forth centered by feed lifting rock shaft 6, the lower end of third connecting rod 24 is swung back and forth centered by feed lifting rock shaft 6, therefore third connecting rod 24 does approximate moving back and forth up and down, thus retainer 8 is driven synchronously to move back and forth up and down together with feeding tooth 9.
In above-mentioned Tai Ya mechanism, the rotation of the first motor 3 can be directly delivered on retainer 8, to ensure the synchronism between the moving back and forth up and down of the rotation of the first motor 3 and retainer 8.In addition, the application drives retainer 8 and feeding tooth 9 action by swinging up and down of feed lifting rock shaft 6 jointly with the swing of feed spool 17, therefore when turning needle gage and big needle distance down the work feed time started and the work feed end time substantially constant, as when Sewing machines is turned down to 3 needle gage by 5 needle gages, the work feed time started shifts to an earlier date 5 °/360 °, and the work feed end time delays 2 °/360 °; When Sewing machines is turned down to 1 needle gage by 5 needle gages, the work feed time started shifts to an earlier date 5 °/360 °, and the work feed end time delays 4 °/360 °.If jointly drive retainer 8 and feeding tooth 9 action by the rotation of feed lifting rock shaft 6 and the swing of feed spool 17, then when Sewing machines is turned down to 3 needle gage by 5 needle gages, the work feed time started shifts to an earlier date 10 °/360 °, and the work feed end time delays 15 °/360 °; When Sewing machines is turned down to 1 needle gage by 5 needle gages, the work feed time started shifts to an earlier date 20 °/360 °, and the work feed end time delays 25 °/360 °.Can draw thus: after adopting the feed mechanism that relates to of the application to carry out work feed, total work feed time recruitment is less, thus effectively avoids the skew of feeding time point, prevent the phenomenons such as the bad or broken needle fault of take-up, finally improve sewing quality.In addition, Tai Ya mechanism is link transmission, so even if Sewing machines low cruise, its noise all can not be very large, and the fault rate of link transmission is lower compared to toothed belt transmission, maintenance is also more convenient.
Preferably, as shown in Figure 3, described second slide block 18 comprises slider body 181 and is located at the slide block flange 182 of slider body 181 right-hand member, described slider body 181 as in chute 71, slider body 181 is plane contact with chute 71, therefore the second slide block 18 can not rotate, can only move in chute 71 in chute 71, thus, when feed lifting rock fork-shaped crank 7 swings up and down, retainer 8 is driven synchronously to swing up and down by the second slide block 18; Described second slide block 18 is hinged with retainer 8 by a pin 19, and the head of described pin 19 and slide block flange 182 are positioned at the left and right sides of feed lifting rock fork-shaped crank 7 rear end, can limit the second slide block 18, relative to feed lifting rock fork-shaped crank 7, left and right play occur.
Further, described cloth feeding mechanism has two kinds of preferred embodiments, embodiment one, see Fig. 1 and Fig. 2, described cloth feeding mechanism comprises the feed spool 17, drive rod 15, intermediate bar 14, take-off lever 13 and the retainer seat 10 that parallel with feed lifting rock shaft 6, one end of described drive rod 15 is fixed on the output shaft of the second motor 16, the two ends of described intermediate bar 14 respectively with the other end of drive rod 15 and one end of take-off lever 13 hinged, described take-off lever 13 other end and retainer seat 10 are all fixed on feed spool 17, and the rear end of described retainer seat 10 and retainer 8 is hinged.The output shaft of described second motor 16 carrys out back rotation in certain angular range, thus drives drive rod 15 swing in certain angular range; Drive rod 15 drives feed spool 17 and the synchronous front and back of retainer seat 10 to move back and forth by intermediate bar 14 and take-off lever 13, thus drives retainer 8 front and back together with feeding tooth 9 to move back and forth.Moved forward and backward the size of amplitude by the input quantity adjustable retainer 8 and feeding tooth 9 adjusting the second motor 16, and then realize the change of feeding tooth 9 multi-motion track, to realize the variation of sewing track.Preferably, described second motor 16 is a stepper motor, can be changed the input quantity of stepper motor by encoder easily, so that the movement locus of adjustment feeding tooth 9.In addition, described feed lifting rock shaft 6 is positioned at the front side of feeding tooth 9, and described feed spool 17 is positioned at the rear side of feeding tooth 9, and namely feed lifting rock shaft 6 is at front, feed spool 17 rear, is first upwards lifted by sewing like this dragged backward by sewing, advantageously in feeding again when feeding.
Embodiment two, as shown in Figure 9 and Figure 10, the retainer seat 10 that described cloth feeding mechanism comprises drive rod 15, intermediate bar 14 and is rotatably supported in baseplate of sewing machine, the transmission arm 102 that described retainer seat 10 comprises the axially extended retainer seat body 101 in left and right and extends along retainer seat body 101 radial direction, the base plate of described Sewing machines is fixed with about one axially extended bearing pin 35, this bearing pin 35 is located in retainer seat body 101, therefore bearing pin 35 is the fixing swing pivot of retainer seat body 101; One end of described drive rod 15 is fixed on the output shaft of the second motor 16, and the two ends of described intermediate bar 14 are hinged respectively at the other end of drive rod 15 and the transmission arm 102 of retainer seat 10.The output shaft of described second motor 16 carrys out back rotation in certain angular range, thus drives drive rod 15 swing in certain angular range; Drive rod 15 is driven before and after retainer seat 10 by intermediate bar 14 and moves back and forth, thus drives retainer 8 front and back together with feeding tooth 9 to move back and forth.This embodiment eliminates feed spool, and retainer seat 10 Direct driver retainer 8, it can ensure the accuracy of Movement transmit, also simplify cloth feeding mechanism, reduces it and takes up room.
In two embodiments of above-mentioned cloth feeding mechanism, the output shaft of described second motor 16 towards a direction and the unidirectional swing of opposite direction once, before and after described retainer 8, reciprocating swing once, therefore the gearratio between the output shaft of the second motor 16 and retainer seat 10 is 2:1, the frequency that the rotation direction reducing the second motor 16 output shaft successively switches, improves sewing quality.
Further, see Fig. 1 and Fig. 3, described retainer seat 10 and retainer 8 are hinged by a cam pin 11, described cam pin 11 comprises the first axle part 111, the second axle part 112 and the 3rd axle portion 113 successively, described the first axle part 111 and the 3rd axle portion 113 are arranged with one heart, the first axle part 111 and the second axle part 112 eccentric setting, described the first axle part 111 and the 3rd axle portion 113 are all rotatably connected in retainer seat 10, and described the second axle part 112 is rotatably connected in retainer 8.Employing cam pin 11 realizes retainer seat 10 and the hinged of retainer 8 has following two advantages: 1, rotate cam pin 11 and can realize the adjustment that retainer 8 moves forward and backward amplitude, be convenient to the adjustment of feeding tooth 9 movement locus further; 2, all there is certain foozle in the part such as drive rod 15, intermediate bar 14, take-off lever 13, feed spool 17, retainer seat 10 and retainer 8, therefore cloth feeding mechanism has assembled rear entirety also can there is certain foozle, this foozle can cause the rotation of the second motor 16 that retainer 8 can not be driven exactly to move forward and backward; After cam pin 11 is set, can offset because of the transmission deviation caused by the foozle of each part by rotating cam pin 11, ensure that the rotation of the second motor 16 can be passed to before and after retainer 8, exactly drive retainer 8 exactly to move back and forth, to guarantee the accuracy of feeding tooth 9 movement locus, improve sewing quality.In addition, for the ease of rotating cam pin 11, the left end of described cam pin 11 offers in-line or criss-cross rotation slot 114, is convenient to screwdriver and rotates cam pin 11.
Preferably, in the embodiment one of above-mentioned cloth feeding mechanism, take-off lever 13 and retainer seat 10 are separately fixed at the two ends of feed spool 17, and described take-off lever 13 is fixedly connected with retainer seat 10, guarantee the accuracy transmitted between the second motor 16 and retainer 8 further, without time lag.Described take-off lever 13 has two kinds of preferred embodiments with the fixed structure of retainer seat 10, embodiment one, arrange between take-off lever 13 and retainer seat 10 left and right extend steady pin, right-hand member and the take-off lever 13 of steady pin are tightly fixed, the left end retainer seat 10 of steady pin is tightly fixed, to be fixedly connected with retainer seat 10 by take-off lever 13.Embodiment two, wear in take-off lever 13 and retainer seat 10 left and right extend trip bolt, the end thread of this trip bolt is connected with a clamp nut, described take-off lever 13 and retainer seat 10 between the head and clamp nut of trip bolt, so that take-off lever 13 is fixedly connected with retainer seat 10.
Further, in order to Appropriate application Sewing machines inner space and reduce taking up room of Sewing machines, described first motor 3 directly adopts the mair motor of Sewing machines, described upper axle 1 is the main shaft of Sewing machines, described second motor 16 is positioned at the below of the first motor 3, and the first motor 3 is fixed on the casing right-hand member of Sewing machines, the second motor 16 is fixed on the base plate of Sewing machines.
In addition, the structure of described hook line mechanism and driver element 300 is as follows: as depicted in figs. 1 and 2, hook line mechanism comprises the rotating shuttle 41 being installed in lower shaft 25 end, driver element 300 comprises vertical pivot 26 and four bevel gears of downward-extension: described upper axle 1 is fixed with the first bevel gear 27, and the upper end of vertical pivot 26 is fixed with the second bevel gear 28 be meshed with the first bevel gear 27; Described lower shaft 25 is fixed with third hand tap gear 29, and the lower end of vertical pivot 26 is fixed with the 4th bevel gear 30 be meshed with third hand tap gear 29.Upper axle 1 drives the first bevel gear 27 synchronous axial system, vertical pivot 26 is driven to rotate by the first bevel gear 27 and engaging each other of the second bevel gear 28, lower shaft 25 is driven to rotate by third hand tap gear 29 and engaging each other of the 4th bevel gear 30 again, the left end of lower shaft 25 is fixed with the rotating shuttle 41 be positioned at below needle plate 12, thus drives rotating shuttle 41 to rotate; Can realize upper axle 1 easily with the gearratio of lower shaft 25 by said gear drive mechanism is 1:2, and gear transmission structure is reliable stable.
The structure of described shank thread take-up mechanism is as follows: as Fig. 1, shown in Fig. 6 to Fig. 8, comprise the thread take-up tension lever 33 being provided with through wires hole 331, thread take-up crank 31 and the needle bar crank 32 being fixed on axle 1 left end, described thread take-up crank 31 is provided with the 4th axle portion 311 with upper axle 1 eccentric setting, 4th axle portion 311 is fixed in needle bar crank 32, 4th axle portion 311 is also hinged with described thread take-up tension lever 33, the line-choosing connecting rod 34 extended back is hinged with in the position at the general middle part of thread take-up tension lever 33, the rear end of line-choosing connecting rod 34 connects a bearing pin 35 rotationally, this bearing pin 35 is fixed in the casing of Sewing machines, therefore bearing pin 35 is the fixed pivot that line-choosing connecting rod 34 swings.When shank 42 moves down thorn cloth, thread take-up tension lever 33 is for line; When shank 42 moves up, thread take-up tension lever 33 take-up fast.
Described shank thread take-up mechanism also comprises shank 42, be fixed on the eedle 40 of shank 42 lower end, shank connecting rod 36, be fixed on the guide rail 37 in sewing machine case, 3rd slide block 38 and the anchor ear 39 be fixed on shank 42, described thread take-up crank 31 is provided with and upper axle 1, 5th axle portion 312 of the 4th axle portion 311 all eccentric setting, described 5th axle portion 312 passes through the upper end thereof of a needle bearing and shank connecting rod 36, hinged 3rd slide block 38 to some extent in right side of shank connecting rod 36 lower end, the left side of shank connecting rod 36 lower end is connected with described anchor ear 39, the gathering sill 371 of downward-extension on is offered in described guide rail 37, described 3rd slide block 38 is arranged in gathering sill 371, and can slide up and down in gathering sill 371, synchronously move back and forth up and down to drive shank 42 and eedle 40.
Preferably, the left end of described upper axle is also provided with one and is fixed on upper axle protheca in sewing machine case, and described upper axle is rotatably supported in axle protheca.
In sum, the Sewing machines that the present invention relates to has following beneficial effect:
1, the rotation of the first motor 3 directly accurately and synchronously drive retainer 8 and feeding tooth 9 to move back and forth up and down, thus can avoid the skew of feeding time point, to improve sewing quality;
2, the first motor 3 drives retainer 8 and feeding tooth 9 to move back and forth up and down by linkage, compared to toothed belt transmission of the prior art, and noise low, failure rate is low during operation, and be also convenient to maintenance;
3, feed lifting rock shaft 6 is at front, feed spool 17 rear, is more conducive to work feed;
4, retainer seat 10 and retainer 8 hinged by cam pin 11, it is convenient to the movement locus adjusting feeding tooth 9, can also offset the transmission deviation that the foozle because of part causes, ensure transmission accuracy.
So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.

Claims (11)

1. a Sewing machines, comprise the upper axle (1) driven by the first motor (3), be located at the shank thread take-up mechanism of axle (1) end, the lower shaft (25) paralleled with upper axle (1), be located at the hook line mechanism of lower shaft (25) end, retainer (8), and the feeding tooth (9) be fixed on retainer (8), described upper axle (1) is connected with lower shaft (25) by driver element (300), upper axle (1) is connected with one end of retainer (8) by Tai Ya mechanism, it is characterized in that: also comprise the second motor (16), described second motor (16) is connected by the other end of cloth feeding mechanism with retainer (8).
2. Sewing machines according to claim 1, it is characterized in that: described Tai Ya mechanism comprises the feed lifting rock shaft (6) paralleled with upper axle (1), described upper axle (1) to be connected with feed lifting rock shaft (6) by the first gear unit (100) and to drive feed lifting rock shaft (6) line centered by own axes to swing back and forth, and described feed lifting rock shaft (6) to be connected with retainer (8) by the second gear unit (200) and to drive retainer (8) to move back and forth up and down.
3. Sewing machines according to claim 2, it is characterized in that: described first gear unit (100) comprises the first eccentric cam (2) or the capacity eccentric bearing be fixed on axle (1), is fixed on lifting tooth rear crank (5) and lifting tooth connecting rod (4) on feed lifting rock shaft (6), described lift tooth connecting rod (4) upper end and described first eccentric cam (2) or capacity eccentric bearing rotatable engagement, lower end and the described tooth rear crank (5) of lifting of lifting tooth connecting rod (4) are hinged.
4. Sewing machines according to claim 2, it is characterized in that: described first gear unit (100) comprises first connecting rod (20), second connecting rod (21) and the first slide block (22), one end of described first connecting rod (20) is fixed on axle (1), one end of described second connecting rod (21) is fixed on feed lifting rock shaft (6), and described first slide block (22) is articulated with the other end of first connecting rod (20) and is enclosed within slidably on second connecting rod (21).
5. Sewing machines according to claim 2, it is characterized in that: described second gear unit (200) comprises feed lifting rock fork-shaped crank (7) and is articulated with second slide block (18) of retainer (8) end, one end of described feed lifting rock fork-shaped crank (7) is fixed on feed lifting rock shaft (6), the other end of feed lifting rock fork-shaped crank (7) offers the chute (71) that the radial direction along feed lifting rock shaft (6) extends, and described second slide block (18) to be located in chute (71) and can be moved around along the bearing of trend of chute (71).
6. Sewing machines according to claim 2, it is characterized in that: described second gear unit (200) comprises and is fixed on the second eccentric cam (23) on feed lifting rock shaft (6) and third connecting rod (24), one end and second eccentric cam (23) of described third connecting rod (24) are hinged, and the other end and the retainer (8) of third connecting rod (24) are hinged.
7. Sewing machines according to claim 1, it is characterized in that: described cloth feeding mechanism comprises the feed spool (17) paralleled with feed lifting rock shaft (6), drive rod (15), intermediate bar (14), take-off lever (13) and retainer seat (10), one end of described drive rod (15) is fixed on the output shaft of the second motor (16), the two ends of described intermediate bar (14) respectively at the other end of drive rod (15) and one end of take-off lever (13) hinged, described take-off lever (13) other end and retainer seat (10) are all fixed on feed spool (17), described retainer seat (10) and retainer (8) hinged.
8. Sewing machines according to claim 7, it is characterized in that: described retainer seat (10) and retainer (8) are hinged by a cam pin (11), described cam pin (11) comprises the first axle part (111) successively, the second axle part (112) and the 3rd axle portion (113), described the first axle part (111) and the 3rd axle portion (113) are arranged with one heart, the first axle part (111) and the second axle part (112) eccentric setting, described the first axle part (111) and the 3rd axle portion (113) are all rotatably connected in retainer seat (10), described the second axle part (112) is rotatably connected in retainer (8).
9. Sewing machines according to claim 7, is characterized in that: described take-off lever (13) is fixedly connected with retainer seat (10).
10. Sewing machines according to claim 1, it is characterized in that: the retainer seat (10) that described cloth feeding mechanism comprises drive rod (15), intermediate bar (14) and is rotatably supported in baseplate of sewing machine, one end of described drive rod (15) is fixed on the output shaft of the second motor (16), and the two ends of described intermediate bar (14) are hinged respectively at the other end of drive rod (15) and retainer seat (10).
11. Sewing machiness according to claim 7 or 10, is characterized in that: towards a direction and the unidirectional swing of opposite direction once, before and after described retainer (8), reciprocating swing once for the output shaft of described second motor (16).
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CN108998899A (en) * 2018-08-16 2018-12-14 杰克缝纫机股份有限公司 A kind of cloth feeding mechanism of automatic improvement take-up
CN109930305A (en) * 2019-04-08 2019-06-25 杰克缝纫机股份有限公司 A kind of encryption seam adjustment structure of sewing machine
CN110438668A (en) * 2019-07-10 2019-11-12 南京铁道职业技术学院 A kind of split type traction paving seam device
CN110761003A (en) * 2018-07-27 2020-02-07 拓卡奔马机电科技有限公司 Needle shuttle clearance automatic regulating mechanism and sewing machine
CN111118759A (en) * 2018-10-31 2020-05-08 拓卡奔马机电科技有限公司 Needle and shuttle cooperation automatic regulating mechanism and sewing machine
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CN111197202A (en) * 2020-03-19 2020-05-26 杰克缝纫机股份有限公司 Feed lifting shaft assembly and sewing machine with same
CN111304838A (en) * 2020-03-10 2020-06-19 杰克缝纫机股份有限公司 Cloth feeding mechanism with adjustable cloth feeding time sequence and sewing machine
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CN105442195A (en) * 2015-12-29 2016-03-30 杰克缝纫机股份有限公司 Sewing machine
CN105624932A (en) * 2015-12-29 2016-06-01 杰克缝纫机股份有限公司 Sewing machine
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CN108625048A (en) * 2017-03-20 2018-10-09 杰克缝纫机股份有限公司 The lift tooth material feeding driving mechanism and sewing machine of sewing machine
CN110761003A (en) * 2018-07-27 2020-02-07 拓卡奔马机电科技有限公司 Needle shuttle clearance automatic regulating mechanism and sewing machine
CN108998899A (en) * 2018-08-16 2018-12-14 杰克缝纫机股份有限公司 A kind of cloth feeding mechanism of automatic improvement take-up
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CN111118758A (en) * 2018-10-31 2020-05-08 拓卡奔马机电科技有限公司 Needle and shuttle cooperation automatic regulating mechanism and sewing machine
CN111118759A (en) * 2018-10-31 2020-05-08 拓卡奔马机电科技有限公司 Needle and shuttle cooperation automatic regulating mechanism and sewing machine
CN111118758B (en) * 2018-10-31 2021-08-27 拓卡奔马机电科技有限公司 Needle and shuttle cooperation automatic regulating mechanism and sewing machine
CN109930305A (en) * 2019-04-08 2019-06-25 杰克缝纫机股份有限公司 A kind of encryption seam adjustment structure of sewing machine
CN110438668A (en) * 2019-07-10 2019-11-12 南京铁道职业技术学院 A kind of split type traction paving seam device
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WO2021128842A1 (en) * 2019-12-25 2021-07-01 杰克缝纫机股份有限公司 Feeding mechanism of sewing machine and sewing machine comprising feeding mechanism
WO2021159622A1 (en) * 2020-02-12 2021-08-19 大连理工大学 Handheld paper embroidery packaging machine
CN111304838A (en) * 2020-03-10 2020-06-19 杰克缝纫机股份有限公司 Cloth feeding mechanism with adjustable cloth feeding time sequence and sewing machine
CN111197202A (en) * 2020-03-19 2020-05-26 杰克缝纫机股份有限公司 Feed lifting shaft assembly and sewing machine with same

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