Thread cutting device of multi-needle machine

Abstract

The utility model discloses a wire cutting device of a multi-needle machine, which comprises a mounting frame, the mounting frame comprises an upper mounting frame and a lower mounting frame, a connecting frame is fixedly connected between the upper mounting frame and the lower mounting frame, a first assembling groove is formed in the upper mounting frame, a second assembling groove is formed in the lower mounting frame, an upper cutting knife rest is fixedly assembled in the first assembling groove, and a lower cutting knife rest is fixedly assembled in the second assembling groove. A lower cutting knife rest is assembled in the second assembling groove, and a driving mechanism is assembled at the bottom of the lower cutting knife rest. The driving mechanism drives the lower cutting knife rest to act in the lower mounting frame, so that the lower cutting knife rest and the upper cutting knife rest are matched to complete cutting operation of sewing threads, the device is simple and convenient to use, the sewing threads can be effectively and intensively cut, the thread cutting efficiency of operators is improved, and the labor intensity of the operators is reduced. And in addition, the disassembly and assembly processes of the upper cutting knife and the lower cutting knife are simpler and more convenient, and the upper cutting knife and the lower cutting knife are convenient to maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of garment processing, in particular to a thread cutting device of a multi-needle machine. Background Art

[0002] In the process of garment processing, a multi-needle machine is needed to sew the fabric. The multi-needle machine is a kind of sewing machine, which is equipped with multiple needles inside, and correspondingly multiple sewing threads are also provided. Multiple sewing threads are transported simultaneously in the process of sewing garments. After the sewing of the fabric is completed, the sewn fabric needs to be taken out, and then the sewing threads on the fabric need to be cut. The existing cutting method is mostly to cut the sewing thread with handheld scissors. Due to the large number of sewing threads, the cutting process is time-consuming and laborious. To this end, we propose a cutting device for a multi-needle machine. Utility Model Content

[0003] The purpose of the utility model is to provide a thread trimming device for a multi-needle machine to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thread cutting device of a multi-needle machine, comprising a mounting frame, the mounting frame comprising an upper mounting frame and a lower mounting frame, a connecting frame fixedly connected between the upper mounting frame and the lower mounting frame, the left and right side walls of the lower mounting frame are integrally formed with a first fixing block, the side wall of the first fixing block is provided with a first fixing hole, the upper mounting frame is provided with a first assembly groove, the lower mounting frame is provided with a second assembly groove, an upper cutting knife holder is fixedly installed in the first assembly groove, a lower cutting knife holder is installed in the second assembly groove, and a driving mechanism is installed at the bottom of the lower cutting knife holder.

[0005] Preferably, the connecting frame is inclined forward by 30°-60°.

[0006] Preferably, the upper cutting tool holder comprises a first assembly frame, the first assembly frame is snap-fitted into a first assembly slot, a limiting frame is assembled on the top of the first assembly frame, and a first fixing screw is fixedly assembled between the limiting frame, the first assembly frame and the upper mounting frame.

[0007] Preferably, the lower cutting blade holder includes a second assembly frame, the second assembly frame is slidably connected in the second assembly slot, the side wall of the second assembly frame is integrally formed with a clamping frame, the lower cutting blade is clamped in the clamping frame, and a second fixing screw is fixedly assembled between the clamping frame and the lower cutting blade.

[0008] Preferably, the driving mechanism comprises a telescopic cylinder, the number of the telescopic cylinders is two, the two telescopic cylinders are symmetrically distributed on the left and right, and the side walls of the two telescopic cylinders are respectively fixedly connected with auxiliary fixing blocks.

[0009] Compared with the prior art, the beneficial effects of the utility model are: a thread cutting device for a multi-needle machine, a mounting frame is fixedly mounted on the rear side wall of the multi-needle machine body, and the lower cutting knife frame is driven by a driving mechanism to move in the lower mounting frame, so that the lower cutting knife frame cooperates with the upper cutting knife frame to complete the cutting operation of the sewing thread. The use process of this device is simple and convenient, and can effectively carry out centralized thread cutting of the sewing thread, thereby improving the thread cutting efficiency of the operator, and the process of disassembling and installing the upper cutting knife and the lower cutting knife is simpler and more convenient, which is convenient for maintenance and replacement of the upper cutting knife and the lower cutting knife, so that the upper cutting knife and the lower cutting knife maintain the thread cutting effect on the sewing thread. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional diagram of the utility model.

[0011] Figure 2 It is a structural schematic diagram of the mounting frame of the utility model.

[0012] Figure 3 It is a structural schematic diagram of the utility model.

[0013] Figure 4 It is a schematic diagram of the structure after the utility model is assembled with a multi-needle machine.

[0014] In the figure: 1. mounting frame; 11. upper mounting frame; 12. lower mounting frame; 13. connecting frame; 14. first fixing block; 15. first fixing hole; 16. first assembly slot; 17. second assembly slot; 2. upper cutting knife frame; 21. first assembly frame; 22. upper cutting knife; 23. limiting frame; 24. first fixing screw; 31. second assembly frame; 32. clamping frame; 33. lower cutting knife; 34. second fixing screw; 4. driving mechanism; 41. telescopic cylinder; 42. auxiliary fixing block. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0016] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The utility model provides a technical solution: a thread cutting device for a multi-needle machine, comprising a mounting frame 1, the mounting frame 1 is composed of an upper mounting frame 11 and a lower mounting frame 12, a connecting frame 13 is fixedly connected between the upper mounting frame 11 and the lower mounting frame 12, the connecting frame 13 is tilted forward by 30°-60°, and after the lower mounting frame 12 is assembled and fixed with the multi-needle machine body 5, a certain distance is provided between the upper mounting frame 11 and the side wall of the multi-needle machine body 5, so that the sewing thread to be cut can pass through;

[0017] The side walls of the lower mounting frame 12 are symmetrically fixed with first fixing blocks 14 on the left and right. A first fixing hole 15 is opened in the middle of the first fixing block 14. The first fixing hole 15 is used for assembling fixing bolts. The lower mounting frame 12 is assembled and fixed to the multi-needle machine body 5 by fixing bolts.

[0018] A first assembly groove 16 is provided in the upper mounting frame 11, and a second assembly groove 17 is provided in the lower mounting frame 12. The first assembly groove 16 is used for assembling the upper cutting knife frame 2, and the second assembly groove 17 is used for assembling the lower cutting knife frame 3. The bottom of the lower cutting knife frame 3 is equipped with a driving mechanism 4 fixedly connected thereto, and the driving mechanism 4 drives the lower cutting knife frame 3 to move upward to cut the sewing thread between the lower cutting knife frame 3 and the upper cutting knife frame 2.

[0019] like Figure 3 As shown in, the upper cutting knife holder 2 includes a first assembly frame 21, and the side wall of the first assembly frame 21 is welded and fixed with an upper cutting knife 22. The first assembly frame 21 is clamped into the first assembly groove 16. The top of the first assembly frame 21 is equipped with a limiting frame 23. The limiting frame 23, the first assembly frame 21 and the first assembly groove 16 are detachably fixedly connected by a first fixing screw 24. By arranging the limiting frame 23 on the top of the first assembly frame 21, the limiting frame 23 can limit the first assembly frame 21 in the first assembly groove 16, thereby increasing the stability of the connection between the first assembly frame 21 and the first assembly groove 16. The first assembly frame 21 and the first assembly groove 16 are detachably fixedly arranged by the first fixing screw 24, so that the upper cutting knife 22 is convenient to be replaced and maintained after it is not sharp, so that it can be kept sharp to improve the stability of cutting the sewing thread.

[0020] The lower cutting tool holder 3 includes a second assembly frame 31, which is slidably connected to the second assembly slot 17. The second assembly slot 17 runs through the lower mounting frame 12. The up and down movement strokes of the second assembly frame 31 are limited by the second assembly slot 17 to improve the accuracy of the up and down movement strokes of the second assembly frame 31. The side wall of the second assembly frame 31 is integrally formed with a clamping frame 32, and a lower cutting knife 33 is clamped and fixed in the clamping frame 32. A second fixing screw 34 is fixedly assembled between the lower cutting knife 33 and the clamping frame 32. The lower cutting knife 33 is detachably fixedly connected to the clamping frame 32 by setting the second fixing screw 34, thereby facilitating the disassembly and maintenance of the lower cutting knife 33.

[0021] The driving mechanism 4 includes a telescopic cylinder 41. There are two telescopic cylinders 41, which are symmetrically distributed on the left and right. The rear side walls of the two telescopic cylinders 41 are respectively fixedly connected with auxiliary fixing blocks 42. The auxiliary fixing blocks 42 are used to be connected and fixed to the base of the multi-needle machine body 5, thereby increasing the stability of the fixation of the telescopic cylinders 41. The output ends of the two telescopic cylinders 41 are fixedly connected to the bottom of the lower assembly frame 31. The lower assembly frame 31 is driven upward by the telescopic cylinder 41, so that the lower cutting knife 33 cooperates with the upper cutting knife 22 to cut the sewing thread. The two telescopic cylinders 41 are respectively connected to external air pumps, and the air pumps can be controlled by an external control button. Each time the control button is pressed, the output ends of the two telescopic cylinders 41 can be controlled to move synchronously once, and air is introduced into the telescopic cylinders 41 by the external air pump to synchronously control the movements of the output ends of the two telescopic cylinders 41.

[0022] Working principle: Figure 4 As shown in , the device is assembled and fixed on the rear side wall of the multi-needle machine body 5. After completing the sewing operation on the cloth, the sewing threads for sewing the cloth are unified and regular, and then the sewing threads are entered from the rear side wall of the upper mounting frame 11, and the sewing cloth is pulled, and the sewing threads pass through the upper cutting knife 22 and the lower cutting knife 33, and the telescopic cylinder 41 is controlled to drive the lower assembly frame 31 and the lower cutting knife 33 to move upward, and the cutting of the sewing thread is completed by the cooperation of the lower cutting knife 33 and the upper cutting knife 22. Through this device, multiple sewing threads can be cut uniformly, and the cutting process is simple and convenient. At the same time, the upper cutting knife 22 and the lower cutting knife 33 in the device are both detachable and fixedly assembled, which is convenient for replacement and maintenance, so that they remain sharp and the cutting effect of the sewing thread is improved.

Claims

1. A thread cutting device for a multi-needle machine, characterized in that: The invention comprises a mounting frame (1), wherein the mounting frame (1) comprises an upper mounting frame (11) and a lower mounting frame (12), a connecting frame (13) being fixedly connected between the upper mounting frame (11) and the lower mounting frame (12), a first fixing block (14) being integrally formed on the left and right side walls of the lower mounting frame (12), a first fixing hole (15) being provided on the side wall of the first fixing block (14), a first assembly groove (16) being provided in the upper mounting frame (11), a second assembly groove (17) being provided in the lower mounting frame (12), an upper cutting blade holder (2) being fixedly mounted in the first assembly groove (16), a lower cutting blade holder (3) being mounted in the second assembly groove (17), and a driving mechanism (4) being provided at the bottom of the lower cutting blade holder (3).

2. The thread cutting device of a multi-needle machine according to claim 1, characterized in that: The connecting frame (13) is inclined forward by 30°-60°.

3. The thread cutting device of a multi-needle machine according to claim 1, characterized in that: The upper cutting tool holder (2) comprises a first assembly frame (21), the first assembly frame (21) is clamped into a first assembly slot (16), a limiting frame (23) is assembled on the top of the first assembly frame (21), and a first fixing screw (24) is fixedly assembled between the limiting frame (23), the first assembly frame (21) and the upper mounting frame (11).

4. The thread cutting device of a multi-needle machine according to claim 1, characterized in that: The lower cutting blade frame (3) comprises a second assembly frame (31), the second assembly frame (31) is slidably connected in a second assembly slot (17), a clamping frame (32) is integrally formed on the side wall of the second assembly frame (31), a lower cutting blade (33) is clamped in the clamping frame (32), and a second fixing screw (34) is fixedly assembled between the clamping frame (32) and the lower cutting blade (33).

5. The thread cutting device of a multi-needle machine according to claim 1, characterized in that: The driving mechanism (4) comprises a telescopic cylinder (41), the number of the telescopic cylinders (41) being two, the two telescopic cylinders (41) being symmetrically distributed on the left and right, and the side walls of the two telescopic cylinders (41) being respectively fixedly connected with auxiliary fixing blocks (42).

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