Wire shearing machine

Abstract

The utility model provides a thread trimming machine, which belongs to the technical field of sewing and thread trimming and comprises a machine body, the machine body is provided with a thread trimming table and a sewing frame, a sewing device is mounted on the sewing frame, a sewing needle is arranged on the sewing device, a first mounting plate is further mounted on one side, far away from the sewing frame, of the thread trimming table, and a first guide rail is arranged on a connecting frame. A first driving motor is mounted on one side of the first mounting plate, a lead screw is in transmission connection with an output shaft of the first driving motor and connected with a first sliding block, an upper trimming frame is fixedly connected to the first sliding block, second guide rails are arranged on the left side wall and the right side wall in the upper trimming frame, and a first hydraulic cylinder is further fixed in the upper trimming frame. And a first lifting plate is fixed to the first hydraulic cylinder, the first lifting plate is in sliding fit with the second guide rails on the two sides, a first thread trimming frame is fixedly connected to the bottom of the first lifting plate, and a first thread trimming knife is arranged on the first thread trimming frame. The utility model has the advantage of higher processing efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing thread trimming, in particular to a thread trimming machine. Background Art

[0002] As the main machine for sewing cloth, the sewing device plays an important and huge role in sewing. The existing sewing device is generally equipped with a thread trimmer to cut off the excess thread ends after sewing. The existing thread trimmer is fixedly arranged on the sewing table of the sewing device and cannot be flexibly adjusted according to the width of the cloth. Some narrow cloths still have long excess thread ends after being trimmed by the thread trimmer after sewing, and manual thread trimming operation is required later, which affects the efficiency and quality of processing and sewing production. Summary of the invention

[0003] The utility model aims to solve the above problems in the prior art and proposes a wire cutting machine which has the advantage of higher processing efficiency.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a thread trimming machine, comprising a machine body, the machine body having a thread trimming platform and a sewing frame, the sewing frame is equipped with a sewing device, the sewing device has a sewing needle,

[0005] A first mounting plate is also installed on the side of the thread trimming table away from the sewing frame, and a connecting frame is installed between the first mounting plate and the sewing frame, the connecting frame is provided with a first guide rail, and a first sliding block is slidably arranged on the first guide rail, a first driving motor is installed on one side of the first mounting plate, a screw rod is transmission-connected to the output shaft of the first driving motor, the screw rod is connected to the first sliding block, an upper thread trimming frame is fixedly connected to the first sliding block, and second guide rails are provided on the left and right side walls of the upper thread trimming frame, a first hydraulic cylinder is also fixed in the upper thread trimming frame, a first lifting plate is fixed on the first hydraulic cylinder, the first lifting plate is slidably matched with the second guide rails on both sides, the bottom of the first lifting plate is fixedly connected to the first thread trimming frame, and the first thread trimming frame is provided with a first thread trimming knife;

[0006] The wire cutting table is provided with a first groove, the first groove has two symmetrical front-to-back step portions, each of the step portions has a third guide rail, a lower wire cutting frame is slidably arranged on the third guide rail, and fourth guide rails are arranged on the left and right inner walls of the lower wire cutting frame, a second hydraulic cylinder is installed at the bottom of the lower wire cutting frame, a second lifting plate is fixed on the second hydraulic cylinder, the second lifting plate is slidably matched with the fourth guide rail, a second wire cutting knife is arranged on the second lifting plate, and the first wire cutting knife and the second wire cutting knife can overlap and be mutually limited and clamped.

[0007] Preferably, the sewing device further includes a first lifting motor, a sewing cylinder, and a sewing presser foot. The first lifting motor is installed on the sewing frame. A sewing cylinder is fixedly connected to the lifting rod of the first lifting motor. A sewing presser foot and a sewing needle are fixed on the sewing cylinder, and a first through hole is provided on the sewing needle.

[0008] Preferably, the first thread cutting frame further has protruding limiting parts located on both sides of the first thread cutting knife, and second through holes for passing the sewing thread are provided on the protruding limiting parts.

[0009] Preferably, the machine body includes a conveying mechanism located behind the thread cutting table. The conveying mechanism includes a conveying frame box, which has a feeding port and a discharging port. A first conveying roller located on the upper surface of the fabric and a second conveying roller located on the lower surface of the fabric are further provided inside the conveying frame box.

[0010] Preferably, a limiting frame is further provided on the inner side walls of the sewing frame and the first mounting plate. A limiting plate is provided at the bottom of the limiting frame for limiting.

[0011] Preferably, the fabric passes through the limiting plate of the limiting frame, the sewing device, the first thread cutting knife and the second thread cutting knife, and the conveying frame box in sequence.

[0012] Compared with the prior art, the advantages of the present utility model are as follows: By adding an upper thread cutting frame behind the sewing device, which can be adjusted in the front-back direction according to the length of the excess sewing thread, and a lower thread cutting frame with a synchronous moving path is arranged in the first groove below it. The first thread cutting knife and the second thread cutting knife on the thread cutting frame can cut the excess sewing thread of the fabric once, which is beneficial to automatically adjust the upper thread cutting frame and the lower thread cutting frame in the front-back direction according to the length of the excess sewing thread, and cut the thread as much as possible, which is convenient for cutting the thread, and has stronger practicability. At the same time, it is not necessary to perform manual fine re-cutting again because the excess sewing thread after cutting is too long, which greatly improves the processing efficiency and quality, and reduces the processing cost. Description of the Drawings

[0013] Figure 1 is the front view of the present utility model.

[0014] Figure 2 is the side sectional view of the present utility model.

[0015] Figure 3 is the structural diagram of the sewing frame part, the thread cutting table and the first mounting plate in the present utility model.

[0016] Figure 4 is the enlarged view of part A in the present utility model.

[0017] In the figure, 2 is the wire cutting table; 21 is the first mounting plate; 22 is the connecting frame; 23 is the first guide rail; 24 is the first sliding block; 25 is the first driving motor; 26 is the lead screw; 27 is the upper wire cutting frame, 271 is the second guide rail, 272 is the first hydraulic cylinder, 273 is the first lifting plate, 274 is the first wire cutting frame, 275 is the first wire cutting knife; 31 is the first groove; 32 is the step portion; 33 is the third guide rail; 34 is the lower wire cutting frame, 341 is the fourth guide rail, 342 is the second hydraulic cylinder, 343 is the second lifting plate, 344 is the second wire cutting knife; 4 is the sewing frame; 41 is the first lifting motor; 42 is the sewing cylinder; 43 is the sewing presser foot; 44 is the sewing needle; 51 is the protruding limiting portion; 52 is the second through hole; 6 is the conveying frame box, 61 is the feeding port, 62 is the discharging port, 63 is the first conveying roller, 64 is the second conveying roller; 71 is the limiting frame; 72 is the limiting plate. Detailed implementation manner

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0019] Such as Figures 1 to 4As shown, a thread trimmer comprises a machine body, wherein the machine body has a thread trimming platform 2 and a sewing frame 4, a sewing device is installed on the sewing frame 4, and the sewing device has a sewing needle 44, a first mounting plate 21 is also installed on the side of the thread trimming platform 2 away from the sewing frame 4, a connecting frame 22 is installed between the first mounting plate 21 and the sewing frame 4, a first guide rail 23 is provided on the connecting frame 22, a first sliding block 24 is slidably arranged on the first guide rail 23, a first driving motor 25 is installed on one side of the first mounting plate 21, a screw rod 26 is transmission-connected to the output shaft of the first driving motor 25, the screw rod 26 is connected to the first sliding block 24, an upper thread trimming frame 27 is fixedly connected to the first sliding block 24, a second guide rail 271 is provided on the left and right side walls of the upper thread trimming frame 27, a first hydraulic cylinder 272 is also fixed in the upper thread trimming frame 27, a first lifting plate 273 is fixed on the first hydraulic cylinder 272, The first lifting plate 273 is slidably matched with the second guide rails 271 on both sides, and the first lifting plate 273 is fixedly connected to the bottom of the first lifting plate 273. The first wire cutting frame 274 is provided with a first wire cutting knife 275; the wire cutting platform 2 is provided with a first groove 31, and the first groove 31 has two symmetrical front and rear step portions 32, each of the step portions 32 has a third guide rail 33, and a lower wire cutting frame 34 is slidably arranged on the third guide rail 33. The inner walls on the left and right sides of the lower wire cutting frame 34 are provided with fourth guide rails 341, and a second hydraulic cylinder 342 is installed at the bottom of the lower wire cutting frame 34, and a second lifting plate 343 is fixed on the second hydraulic cylinder 342, and the second lifting plate 343 is slidably matched with the fourth guide rail 341, and the second lifting plate 343 is provided with a second wire cutting knife 344, and the first wire cutting knife 275 and the second wire cutting knife 344 can overlap and limit each other.

[0020] With the above structure, the fabric first undergoes a sewing operation on the thread cutting table 2 of the machine body, and then passes through the upper thread cutting frame 27 that can move forward or backward and is added behind the sewing device. A lower thread cutting frame 34 with a synchronous movement path is arranged in the first groove 31 below it. After the sewing device performs a sewing operation and needs to cut off the excess sewing thread, the first drive motor 25 is started to drive the lead screw 26 to rotate. At the same time, the lead screw 26 can be converted from rotary motion to linear motion, driving the first sliding block 24 to move forward or backward until it approaches the sewing thread. At the same time, the first lifting motor 41 arranged in the upper thread cutting frame 27 and the second lifting motor arranged on the lower thread cutting frame 34 lift or lower towards each other during thread cutting, causing the first lifting plate 273 to descend and the second lifting plate 343 to lift upwards, so that the first thread cutting knife 275 arranged on the upper thread cutting frame 27 and the second thread cutting knife 344 on the thread cutting frame can overlap and be limited and clamped. Since the sewing thread passes through the sewing cylinder 42 from the sewing device, then passes through the sewing needle 44 and the first thread cutting frame 274 in sequence, the first thread cutting knife 275 and the second thread cutting knife 344 on the thread cutting frame can cut the excess sewing thread of the fabric once. The setting of this structure is beneficial for the upper thread cutting frame 27 and the lower thread cutting frame 34 that can be automatically adjusted in the front-back direction according to the length of the excess sewing thread to cut the excess sewing thread as much as possible, facilitating thread cutting, with stronger practicability. At the same time, it is not necessary to perform manual fine re-thread cutting again because the excess sewing thread is too long after thread cutting, greatly improving the processing efficiency and quality, and reducing the processing cost at the same time.

[0021] Specifically, as Figures 1 to 4 shown, the sewing device further includes a first lifting motor 41, a sewing cylinder 42, and a sewing presser foot 43. The first lifting motor 41 is installed on the sewing frame 4. A sewing cylinder 42 is fixedly connected to the lifting rod of the first lifting motor 41. A sewing presser foot 43 and a sewing needle 44 are fixed on the sewing cylinder 42. The sewing needle 44 has a first through hole.

[0022] With the above structure, by setting the sewing presser foot 43 and the sewing needle 44, the sewing operation is automatically performed, with high automation efficiency and high mechanization degree.

[0023] As Figures 1 to 4 shown, the first thread cutting frame 274 also has protruding limiting parts 51 located on both sides of the first thread cutting knife 275. Second through holes 52 for passing the sewing thread are provided on the protruding limiting parts 51.

[0024] By having second through-holes 52 for passing sewing threads on the protruding limiting portions 51, the second through-holes 52 are used to thread the sewing threads. When thread cutting is required, automatic thread cutting can be performed by the first thread cutter 275 and the second thread cutter 344, which is beneficial for the upper thread cutting frame 27 and the lower thread cutting frame 34 that can be automatically adjusted in the front-back direction according to the length of the excess sewing thread, so as to cut the excess sewing thread as much as possible, making it convenient for thread cutting and more practical. At the same time, it is not necessary to perform manual and delicate re-thread cutting again due to the excessive length of the excess sewing thread after thread cutting, which greatly improves the processing efficiency and quality, and reduces the processing cost at the same time.

[0025] As Figures 1 to 4 shown, the machine body includes a conveying mechanism located behind the thread cutting table 2. The conveying mechanism includes a conveying frame box 6, the conveying frame box 6 has a feeding port 61 and a discharging port 62, and the conveying frame box 6 also has a first conveying roller 63 located on the upper surface of the fabric and a second conveying roller 64 located on the lower surface of the fabric.

[0026] By arranging the first conveying roller 63 and the second conveying roller 64, it is beneficial to improve the conveying speed of the fabric, thereby improving the processing efficiency of the fabric.

[0027] As Figures 1 to 4 shown, the sewing frame 4 and the inner side wall of the first mounting plate 21 also have a limiting frame 71. The bottom of the limiting frame 71 has a limiting plate 72 for limiting. By arranging the limiting plate 72, it is beneficial to facilitate the conveying of the fabric during fabric conveying, and is beneficial to limit the fabric to prevent it from swinging upward or downward during cutting, thereby improving the processing quality.

[0028] As Figures 1 to 4 shown, the fabric sequentially passes through the limiting plate 72 of the limiting frame 71, the sewing device, the first thread cutter 275 and the second thread cutter 344, and the conveying frame box 6. Through the above steps, automatic thread cutting treatment is immediately performed after sewing, and the degree of processing integration is high, which is beneficial to improving the processing efficiency.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indication also changes accordingly.

[0030] In addition, the descriptions involving "first", "second", etc. in the present invention are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. At the same time, the meaning of "and / or" appearing throughout the text is that it includes three scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] The above components are all common standard parts or parts known to those skilled in the art, and their structures and principles can all be known to those skilled in the art through technical manuals or by conventional experimental methods.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A thread cutting machine, comprising a machine body, characterized in that, The machine body comprises a thread trimming platform (2) and a sewing frame (4), a sewing device is mounted on the sewing frame (4), and the sewing device has a sewing needle (44). A first mounting plate (21) is also installed on a side of the thread trimming platform (2) away from the sewing frame (4); a connecting frame (22) is installed between the first mounting plate (21) and the sewing frame (4); the connecting frame (22) has a first guide rail (23); a first sliding block (24) is slidably arranged on the first guide rail (23); a first driving motor (25) is installed on one side of the first mounting plate (21); a screw rod (26) is transmission-connected to the output shaft of the first driving motor (25); the screw rod (26) is connected to the first sliding block (24); the first sliding An upper thread trimming frame (27) is fixedly connected to the block (24); the left and right side walls of the upper thread trimming frame (27) are provided with second guide rails (271); a first hydraulic cylinder (272) is also fixed in the upper thread trimming frame (27); a first lifting plate (273) is fixed on the first hydraulic cylinder (272); the first lifting plate (273) is slidably matched with the second guide rails (271) on both sides; a first thread trimming frame (274) is fixedly connected to the bottom of the first lifting plate (273); and a first thread trimming knife (275) is provided on the first thread trimming frame (274); The thread cutting platform (2) is provided with a first groove (31), the first groove (31) has two symmetrical front-to-back step portions (32), each of the step portions (32) has a third guide rail (33), a lower thread cutting frame (34) is slidably provided on the third guide rail (33), the left and right inner walls of the lower thread cutting frame (34) are provided with fourth guide rails (341), a second hydraulic cylinder (342) is installed at the bottom of the lower thread cutting frame (34), a second lifting plate (343) is fixed on the second hydraulic cylinder (342), the second lifting plate (343) is slidably matched with the fourth guide rail (341), a second thread cutting knife (344) is provided on the second lifting plate (343), the first thread cutting knife (275) and the second thread cutting knife (344) can overlap and be mutually limited and clamped.

2. The wire cutting machine according to claim 1, characterized in that, The sewing device further comprises a first lifting motor (41), a sewing cylinder (42) and a sewing foot (43); the first lifting motor (41) is mounted on a sewing frame (4); a lifting rod of the first lifting motor (41) is fixedly connected to the sewing cylinder (42); a sewing foot (43) and a sewing needle (44) are fixed on the sewing cylinder (42); and the sewing needle (44) has a first through hole.

3. A wire cutting machine according to claim 1, characterized in that, The first thread cutting frame (274) also has protruding limiting parts (51) located on both sides of the first thread cutting knife (275), and the protruding limiting parts (51) are each provided with a second through hole (52) for passing the sewing thread.

4. A wire cutting machine according to claim 1, wherein, The machine body includes a conveying mechanism located behind the thread cutting table (2). The conveying mechanism includes a conveying frame box (6). The conveying frame box (6) has a feeding port (61) and a discharging port (62). The conveying frame box (6) also has a first conveying roller (63) located on the upper surface of the fabric and a second conveying roller (64) located on the lower surface of the fabric.

5. A wire cutting machine according to claim 1, characterized in that, There is also a limiting frame (71) on the inner side wall of the sewing frame (4) and the first mounting plate (21). The bottom of the limiting frame (71) has a limiting plate (72) for limiting.

6. A wire cutting machine according to claim 5, characterized in that, The fabric passes through the limiting plate (72) of the limiting frame (71), the sewing device, the first thread cutting knife (275) and the second thread cutting knife (344), and the conveying frame box (6) in sequence.

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