CN210596553U

CN210596553U - Thread trimming mechanism of upper pulling machine

Info

Publication number: CN210596553U
Application number: CN201921526926.9U
Authority: CN
Inventors: 黄道生
Original assignee: Taizhou Jiajing Sewing Machine Co ltd
Current assignee: Taizhou Jiajing Sewing Machine Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-05-22
Anticipated expiration: 2029-09-12

Abstract

The utility model provides a draw trimming mechanism of group's machine belongs to mechanical technical field. It has solved the problem of current trimming mechanism inefficiency of drawing group's machine. Draw group's machine to include the casing and can mutually support and be used for pressing from both sides feed table and the presser foot wheel of putting between material spare, this thread trimming mechanism is including moving sword and fixing the stationary knife on the casing, and the stationary knife stretches into in the feed table and is close to feed table and presser foot wheel and puts between the department setting, moves the sword and rotates to be connected in the feed table, is fixed with the driving piece on the casing, and the driving piece with move the sword transmission and be connected and can drive and move the sword and rotate to realize the thread trimming with the stationary knife cooperation. The shearing point formed by mutually matching the fixed knife and the movable knife is directly positioned near the clamping position of the feeding disc and the presser foot wheel, the shearing of the suture can be directly realized near the suture sewing position of the material piece, an additional thread hooking component is not required to be arranged for hooking the thread, the head of the cut suture on the sewing material piece is also shorter, the manual shearing is not required, and the production efficiency is further improved.

Description

Thread trimming mechanism of upper pulling machine

Technical Field

The utility model belongs to the technical field of machinery, a draw trimming mechanism of group's machine is related to.

Background

The upper pulling machine is a special sewing machine suitable for sewing sports shoes, California type midsoles, working gloves, medium-thickness fur, diving suits, baby shoes and other articles. A belt pulley is arranged at the right side of the conventional upper pulling machine and can drive a main shaft to drive a needle bar shaft and a crochet needle shaft to generate sewing action and drive a feeding wheel to intermittently rotate for feeding, and a pressure caster is arranged adjacent to the top of the feeding wheel. When sewing the work material, can pull the moving frame outwards and move, insert two-layer work material between feed wheel and presser foot wheel, make the presser foot wheel follow the synchronous intermittent type of feed wheel and rotate, let the user hold the work material both ends with both hands, and cooperate its pay-off speed to pass, in order to accomplish the sewing operation.

Although the existing upper pulling machine is widely used, after the existing upper pulling machine plays a sewing operation, a user needs to cut off a suture in a manual mode, and therefore production efficiency is low.

Therefore, the Chinese patent application (application number: 201610531599.0) discloses a rib drawing machine with a thread cutting device, which mainly comprises a body, a feeding device, a driving device and a thread cutting device, wherein the feeding device is assembled on the body and is provided with a feeding shaft and a feeding wheel which are assembled with each other, the driving device can drive the feeding wheel to rotate, the thread cutting device is provided with a fixed seat assembled on the body, a cutting component and a driving source which are assembled on the fixed seat and a thread hooking component connected with the driving source, and the driving source can drive the thread hooking component to be drawn from a thread hooking position above the feeding wheel to a cutting position where a thread is contacted with the cutting component.

The thread cutting process of the upper drawing machine is that the thread hooking component hooks the thread and pulls the thread to the cutting component, and the contact end of the elastic sheet on the cutting component pushes the thread to the knife edge of the cutting component through elasticity to cut the thread, so that the thread can be automatically cut, but the thread cutting machine still has the following defects: 1. the thread hooking component needs to be additionally arranged, the stroke of the thread hooking component needs to be accurately controlled, the thread can be accurately hooked, the overall structure is complex, the precision requirement is high, if the thread cannot be accurately hooked, the subsequent thread shearing action cannot be completed, and the production efficiency is low; 2. the suture is cut by elastically pressing the thread hooking component by the contact end of the elastic sheet, so that the suture is pushed to the knife edge part of the cutting component by elastic thrust to be cut, but the elastic force of the elastic sheet is deteriorated after the elastic sheet is used for a long time, the elastic force for pushing the suture to the knife edge part to cut cannot be met, and the suture cannot be cut approximately, so that the production efficiency is influenced; 3. the suture is firstly hooked by the thread hooking component and pulled to the position of the cutting component for cutting, so that the head of the cut suture on the sewing material piece is longer, the sewing material piece still needs to be manually trimmed, and the production efficiency is low.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a draw trimming mechanism of group's machine, the utility model aims to solve the technical problem that: how to improve the production efficiency.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a draw trimming mechanism of group's machine, draws group's machine to include the casing, and can mutually support and be used for pressing from both sides feed table and presser foot wheel of putting material between, its characterized in that, this trimming mechanism is including moving the sword and fixing the stationary knife on the casing, the stationary knife stretches into in the feed table and be close to feed table and presser foot wheel are put between and are put the department and set up, move the sword and rotate to be connected in the feed table, be fixed with the driving piece on the casing, the driving piece with move the sword transmission and be connected and can drive and move the sword and rotate to realize the trimming with the stationary knife cooperation.

When the sewing machine is used for sewing, the material piece is clamped between the feeding disc and the presser foot wheel, sewing is realized at the position, the fixed knife and the movable knife are integrated at the feeding disc of the thread cutting mechanism, thread cutting can be realized through the cooperation of the movable knife and the fixed knife, the condition that the thread cannot be cut off due to elastic fatigue of the elastic sheet in the conventional thread cutting structure is avoided, the thread can be cut off all the time, and the production efficiency is improved. And the stationary knife directly stretches into the feed table and is located near the position where the feed table and the presser foot wheel are clamped, the movable knife is rotatably connected in the feed table, the arrangement of the stationary knife and the movable knife cannot influence the arrangement of peripheral components, the structure is simple and compact, and a shearing point formed by mutually matching the stationary knife and the movable knife is directly located near the position where the feed table and the presser foot wheel are clamped, so that the shearing of a suture can be directly realized near the suture sewing position of a material piece, an additional thread hooking component is not required to be arranged for hooking the suture, the head of the cut suture on the sewing material piece is also shorter, manual shearing is not required, and the production efficiency is further improved.

In the thread trimming mechanism of the upper drawing machine, the feeding disc is rotatably connected with the annular rotating frame, the movable cutter is fixed on the annular rotating frame, and the driving piece is in transmission connection with the annular rotating frame and can drive the annular rotating frame to rotate. The feeding tray is mainly used for realizing feeding by clamping the material piece with the cooperation of the presser foot wheel, therefore, the outer peripheral wall mainly generates the function, the annular rotating frame is arranged in the feeding tray in a rotating mode, the space on the feeding tray is reasonably utilized, the whole structure is more compact, the whole layout of the upper pulling machine does not need to be changed too much, and the convenience is good. The annular rotating frame is driven to rotate by the driving piece, so that the movable knife is driven to swing to complete thread shearing in cooperation with the fixed knife, and meanwhile, the fixed knife and the movable knife are integrated at the position of the feed plate, so that a shearing point can be directly arranged at an accessory at the sewing position, namely, the feed plate and the presser foot wheel are clamped near the position, the thread end of a cut thread on a sewing material piece is also short, manual trimming is not needed, and the production efficiency is further improved.

In the thread trimming mechanism of the upper pulling machine, the casing is fixed with a connecting shaft, the feeding disc is rotatably connected to the connecting shaft, the middle part of the feeding disc is provided with an annular concave shoulder, the annular rotating frame is embedded in the annular concave shoulder, and the annular rotating frame is sleeved on the connecting shaft and is connected with the connecting shaft through a bearing. Through foretell setting, the direct embedding of annular rotating turret is in the feed table, and spatial layout is compacter, simultaneously, can realize mutually independent rotation function again between annular rotating turret and the feed table, has both guaranteed the pay-off function of feed table, has realized again that the swing of moving the sword realizes the trimming with the stationary knife cooperation.

In foretell thread trimmer constructs of group's machine of drawing, move the sword and fix on annular rotating turret through moving the sword seat, move the sword including being curved fixed part, being curved cutting edge portion one and the transition portion of connecting fixed part and cutting edge portion one, it has the curved stationary blade to move on the sword seat, the fixed part pastes and fixes on the stationary blade, cutting edge portion one and stationary knife all are close to the circumference border setting of pay-off dish, cutting edge portion one, fixed part and pay-off dish all are in the same centre of a circle. The first knife edge part and the fixed knife are arranged close to the circumferential edge of the feeding disc, so that the cutting points of the movable knife and the fixed knife are located at the circumferential edge of the feeding disc and close to the sewing position of the suture, the suture can be directly cut at the position, the head of the cut suture on a sewing material piece is short, manual trimming is not needed, and the production efficiency is further improved.

In the thread trimming mechanism of the upper pulling machine, the movable cutter holder further comprises a fixed plate, a first embedded groove is formed in the annular rotating frame, the fixed plate is fixedly embedded in the first embedded groove, a second embedded groove is formed in the fixed plate, a connecting sheet which is bent relative to the fixed sheet is arranged on the fixed sheet, and the connecting sheet is fixedly embedded in the second embedded groove. Through the arrangement, the structure is more compact after installation, and the split type connecting structure is adopted, so that the installation is simpler and more convenient.

In the thread trimming mechanism of the upper pulling machine, the fixed cutter is fixed on the shell through the fixed cutter frame, the fixed cutter is provided with a second arc-shaped cutter edge part, and the second cutter edge part is positioned in the feeding disc and is close to the circumferential edge of the feeding disc. The arc-shaped knife edge part II and the arc-shaped knife edge part I are matched with each other to cut off a suture, and the arc-shaped knife edge part II is arranged at the edge of the feeding disc along the circumferential direction of the feeding disc, so that the arc-shaped knife edge part II can not protrude out of the feeding disc, the structure is more compact, and the influences on the peripheral parts and the sewing of the material parts can not be caused.

In the thread trimming mechanism of the upper pulling machine, the driving piece is provided with a telescopic ejector rod, a first connecting rod is hinged to the ejector rod, a second connecting rod is fixed to the annular rotating frame, and the first connecting rod is hinged to the second connecting rod. A connecting rod mechanism is formed between the first connecting rod and the second connecting rod, the driving piece operates, the ejector rod extends out, and the annular rotating frame can be pushed to rotate through the matching effect of the first connecting rod and the second connecting rod, so that the movable cutter swings to be matched with the fixed cutter to cut lines.

In the thread trimming mechanism of the upper pulling machine, the annular rotating frame is further provided with a third embedded groove, the second connecting rod is Z-shaped, one end of the second connecting rod is fixedly embedded in the third embedded groove, and the other end of the second connecting rod is hinged to the first connecting rod. And the second connecting rod and the annular rotating frame are also installed in an embedded mode, so that the structure is more compact.

Compared with the prior art, this draw trimming mechanism of group's machine has following advantage:

1. the thread cutting can be realized through the cooperation of the movable cutter and the fixed cutter, the condition that the thread cannot be cut off due to elastic fatigue of the elastic sheet in the conventional thread cutting structure is avoided, the thread can be cut off all the time, and the production efficiency is improved.

2. The fixed cutter and the movable cutter are integrated in the feeding tray, so that the arrangement of peripheral parts is not influenced, the structure is simple and compact, and the operation is more convenient.

3. The shearing point formed by mutually matching the fixed knife and the movable knife is directly positioned near the clamping position of the feeding disc and the presser foot wheel, the shearing of the suture can be directly realized near the suture sewing position of the material piece, an additional thread hooking component is not required to be arranged for hooking the thread, the head of the cut suture on the sewing material piece is also shorter, the manual shearing is not required, and the production efficiency is further improved.

Drawings

Fig. 1 is a structural diagram of a upper pulling machine with the thread cutting mechanism.

Fig. 2 is a first perspective view of the thread trimming mechanism.

Fig. 3 is a second perspective view of the thread trimming mechanism.

Fig. 4 is a partial cross-sectional view of the present thread trimming mechanism.

Fig. 5 is a perspective view of the annular turret.

In the figure, 1, a housing; 2. a feed tray; 2a, an annular concave shoulder; 3. pressing the caster; 4. moving a knife; 4a, a fixed part; 4b, a transition part; 4c, a first blade part; 5. fixing a cutter; 5a, a second blade part; 6. a drive member; 6a, a mandril; 7. an annular turret; 7a, inserting the groove I; 7b, a third embedded groove; 8. a connecting shaft; 9. a bearing; 10. a movable cutter seat; 10a, a fixing piece; 10b, fixing plates; 10b1, a second embedded groove; 10c, connecting sheets; 11. a fixed tool rest; 12. a first connecting rod; 13. a second connecting rod; 14. needle mount pad.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-5, the upper pulling machine comprises a machine shell 1, a machine needle mounting seat 14, a crochet hook, a feeding disc 2 and a presser foot wheel 3 which can be matched with each other for clamping a material piece, wherein the machine needle mounting seat 14 is used for mounting the machine needle, a driving mechanism is further arranged in the machine shell 1, and the driving mechanism drives the machine needle, the crochet hook, the feeding disc 2 and the presser foot wheel 3 to be matched together for completing sewing operation.

This thread trimming mechanism is including moving sword 4 and fixing stationary knife 5 on casing 1, and stationary knife 5 stretches into in the feed table 2 and is close to feed table 2 and the 3 position settings that sandwich of presser foot wheel, moves sword 4 and rotates and connect in feed table 2, and stationary knife 5 with move sword 4 and be located the both sides of eedle mount pad 14 respectively, is fixed with driving piece 6 on the casing 1, driving piece 6 with move the transmission of sword 4 and be connected and can drive and move sword 4 and rotate to realize the thread trimming with the cooperation of stationary knife 5.

Specifically speaking, decide sword 5 and fix on casing 1 through deciding knife rest 11, decide knife rest 11 including being massive base and the linking arm that is the L type, the one end lateral wall of linking arm pastes and leans on the base and passes linking arm and base in proper order through the fastener and fix on casing 1, decides sword 5 and fixes at the linking arm other end, decides sword 5 and has and be curved cutting edge portion two 5a, and cutting edge portion two 5a stretch into in the feed tray 2 and be close to the circumference border setting of feed tray 2.

A connecting shaft 8 is fixed on the machine shell 1, an annular convex edge is arranged on the connecting shaft 8, the feeding plate 2 is sleeved on the connecting shaft 8, and the bottom of the feeding plate 2 is connected with the annular convex edge through a plane ball bearing. An annular rotating frame 7 is arranged in the feeding plate 2, an annular concave shoulder 2a is arranged in the middle of the feeding plate 2, the annular rotating frame 7 is embedded in the annular concave shoulder 2a, and the annular rotating frame 7 is sleeved on the connecting shaft 8 and is connected with the connecting shaft 8 through a bearing 9.

The movable knife 4 is fixed on the annular rotating frame 7 through the movable knife holder 10, the movable knife holder 10 comprises a fixing plate 10b and an arc-shaped fixing plate 10a, an embedded groove 7a is formed in the annular rotating frame 7, the fixing plate 10b is embedded in the embedded groove 7a and fixed through a fastener, an embedded groove two 10b1 is formed in the fixing plate 10b, a connecting piece 10c bent and arranged relative to the fixing plate 10a is arranged on the fixing plate 10a, and the connecting piece 10c is embedded in the embedded groove two 10b1 and fixed through the fastener. The movable knife 4 comprises an arc-shaped fixing part 4a, an arc-shaped knife edge part 4c and a transition part 4b for connecting the fixing part 4a and the knife edge part 4c, and the knife edge part 4c and the transition part 4b and the fixing part 4a and the transition part 4b are in arc transition connection and are of an integrated structure. Fixed part 4a pastes and leans on stationary blade 10a, has seted up the bar hole on fixed part 4a, and fixed part 4a passes the bar hole through the fastener and fixes on stationary blade 10a, and the mounted position of moving sword 4 can be adjusted to the setting in bar hole. The first knife edge part 4c and the fixed knife 5 are arranged close to the circumferential edge of the feeding disc 2, and the first knife edge part 4c, the fixing part 4a and the feeding disc 2 are concentric. The two curved blade parts 5a and the first curved blade part 4c are mutually matched to realize cutting of a suture, and the two curved blade parts 5a and the first curved blade part 4c are arranged on the edge of the feeding disc 2 along the circumferential direction of the feeding disc 2, so that the two curved blade parts do not protrude out of the feeding disc 2, the structure is more compact, and the influence on the peripheral parts and the sewing of the parts is avoided.

The driving piece 6 is provided with a telescopic ejector rod 6a, an extension rod is fixed on the ejector rod 6a, a first connecting rod 12 is hinged to the extension rod, one end, away from the ejector rod 6a, of the first connecting rod 12 is hinged to a second connecting rod 13, a third embedded groove 7b is further formed in the annular rotating frame 7, the second connecting rod 13 is Z-shaped, one end of the second connecting rod 13 is fixedly embedded in the third embedded groove 7b, the other end of the second connecting rod is hinged to the first connecting rod 12, a connecting rod mechanism is formed between the first connecting rod 12 and the second connecting rod 13, the driving piece 6 runs, the ejector rod 6a extends out, the annular rotating frame 7 can be pushed to rotate through the matching effect of the first connecting rod 12 and the second connecting rod 13, and the movable knife 4 can. In this embodiment, the driving member 6 is a cylinder.

When sewing, the material piece is clamped between the feeding disc 2 and the presser foot wheel 3, and the driving mechanism drives the driving wheel, the machine needle and the crochet needle to operate at the position to realize sewing. After sewing is finished, the driving piece 6 drives the ejector rod 6a to extend out, the annular rotating frame 7 can be pushed to rotate through the action of the first connecting rod 12 and the second connecting rod 13, so that the first knife edge part 4c of the movable knife 4 is pushed to swing along the circumferential direction of the feeding disc 2, the first knife edge part 4c of the movable knife 4 and the second knife edge part 5a of the fixed knife 5 are matched with each other to directly cut off a suture, the problem that the suture cannot be cut off due to elastic fatigue of an elastic sheet in the existing thread cutting structure is avoided, the suture can be cut off all the time, and production efficiency is improved. And because the stationary knife 5 is directly arranged above the feed table 2 and is close to the position where the feed table 2 and the presser foot wheel 3 are clamped, the movable knife 4 is rotatably connected in the feed table 2, the shearing point formed by mutually matching the stationary knife 5 and the movable knife 4 is directly positioned near the position where the feed table 2 and the presser foot wheel 3 are clamped, the head of the cut suture on the sewing material piece is also shorter, manual trimming is not needed, and the production efficiency is further improved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although 1, a housing is used more herein; 2. a feed tray; 2a, an annular concave shoulder; 3. pressing the caster; 4. moving a knife; 4a, a fixed part; 4b, a transition part; 4c, a first blade part; 5. fixing a cutter; 5a, a second blade part; 6. a drive member; 6a, a mandril; 7. an annular turret; 7a, inserting the groove I; 7b, a third embedded groove; 8. a connecting shaft; 9. a bearing; 10. a movable cutter seat; 10a, a fixing piece; 10b, fixing plates; 10b1, a second embedded groove; 10c, connecting sheets; 11. a fixed tool rest; 12. a first connecting rod; 13. a second connecting rod; 14. needle mount, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a draw trimming mechanism of group's machine, draw group's machine to include casing (1) and can mutually support and be used for pressing from both sides feed table (2) and presser foot wheel (3) of putting material between, its characterized in that, this trimming mechanism is including moving sword (4) and fixing stationary knife (5) on casing (1), stationary knife (5) stretch into in feed table (2) and be close to feed table (2) and presser foot wheel (3) are put between and are located the setting, move sword (4) and rotate and connect in feed table (2), be fixed with driving piece (6) on casing (1), driving piece (6) with move sword (4) transmission and be connected and can drive and move sword (4) and rotate to realize the trimming with stationary knife (5) cooperation.

2. The thread trimming mechanism of the upper drawing machine according to claim 1, wherein an annular rotating frame (7) is rotatably connected to the feeding disc (2), the movable cutter (4) is fixed on the annular rotating frame (7), and the driving member (6) is in transmission connection with the annular rotating frame (7) and can drive the annular rotating frame (7) to rotate.

3. The thread trimming mechanism of the upper pulling machine according to claim 2, wherein a connecting shaft (8) is fixed on the machine shell (1), the feeding disc (2) is rotatably connected to the connecting shaft (8), an annular concave shoulder (2a) is arranged in the middle of the feeding disc (2), the annular rotating frame (7) is embedded in the annular concave shoulder (2a), and the annular rotating frame (7) is sleeved on the connecting shaft (8) and is connected with the connecting shaft (8) through a bearing (9).

4. The thread trimming mechanism of the upper drawing machine according to claim 2 or 3, wherein the movable knife (4) is fixed on the annular rotating frame (7) through a movable knife holder (10), the movable knife (4) comprises an arc-shaped fixing part (4a), an arc-shaped knife edge part I (4c) and a transition part (4b) connecting the fixing part (4a) and the knife edge part I (4c), an arc-shaped fixing piece (10a) is arranged on the movable knife holder (10), the fixing part (4a) is attached to and fixed on the fixing piece (10a), the knife edge part I (4c) and the fixed knife (5) are arranged close to the circumferential edge of the feeding disc (2), and the knife edge part I (4c), the fixing part (4a) and the feeding disc (2) are concentric.

5. The thread trimming mechanism of the upper pulling machine according to claim 4, wherein the movable cutter seat (10) further comprises a fixing plate (10b), the annular rotating frame (7) is provided with a first embedded groove (7a), the fixing plate (10b) is fixedly embedded in the first embedded groove (7a), the fixing plate (10b) is provided with a second embedded groove (10b1), the fixing plate (10a) is provided with a connecting piece (10c) which is bent relative to the fixing plate (10a), and the connecting piece (10c) is fixedly embedded in the second embedded groove (10b 1).

6. The thread trimming mechanism of the upper pulling machine according to claim 1, 2 or 3, wherein the fixed knife (5) is fixed on the machine shell (1) through a fixed knife rest (11), the fixed knife (5) is provided with a second arc-shaped knife edge part (5a), and the second knife edge part (5a) is positioned in the feed tray (2) and is arranged close to the circumferential edge of the feed tray (2).

7. The thread trimming mechanism of the upper drawing machine according to claim 2 or 3, wherein the driving member (6) is provided with a telescopic top rod (6a), the top rod (6a) is hinged with a first connecting rod (12), the annular rotating frame (7) is fixed with a second connecting rod (13), and the first connecting rod (12) is hinged with the second connecting rod (13).

8. The thread trimming mechanism of the upper pulling machine according to claim 7, wherein an embedded groove III (7b) is further formed in the annular rotating frame (7), the connecting rod II (13) is Z-shaped, one end of the connecting rod II (13) is fixedly embedded in the embedded groove III (7b), and the other end of the connecting rod II is hinged to the connecting rod I (12).