CN216891503U

CN216891503U - Upper thread cutting mechanism of lockstitch sewing machine

Info

Publication number: CN216891503U
Application number: CN202220613708.4U
Authority: CN
Inventors: 张勇; 宋长安; 魏金华
Original assignee: Wuhan Huacheng Textile Clothing Co ltd
Current assignee: Wuhan Huacheng Textile Clothing Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-07-05
Anticipated expiration: 2032-03-21

Abstract

The utility model relates to an upper thread cutting mechanism of a lockstitch sewing machine, which comprises a support frame, wherein the support frame is provided with a sliding seat, a first sliding rod is arranged in the sliding seat, the first sliding rod is provided with a fixing component, the support frame is provided with a hole matched with the fixing component, the fixing component is provided with a cutting knife and a first rotating shaft, the first rotating shaft is provided with a first connecting component, the first connecting component is provided with a second rotating shaft, the second rotating shaft is connected with a second connecting component, the second connecting component is provided with a third rotating shaft, the third rotating shaft is connected with a third connecting component, the support frame is provided with a supporting component, the supporting component is provided with a fifth rotating shaft, the fifth rotating shaft is provided with a driven bevel gear, the fifth rotating shaft is connected with a third connecting component, and the supporting component is provided with a motor, and a driving bevel gear meshed with the driven bevel gear is mounted at the power output end of the motor.

Description

Upper thread cutting mechanism of lockstitch sewing machine

Technical Field

The utility model relates to the technical field of facial line cutting equipment of a flush joint machine, in particular to a facial line cutting mechanism of the flush joint machine.

Background

A flat bed sewing machine, also known as a flatbed sewing machine, is a machine that uses a single sewing thread to form a stitch on a material to be sewn, thereby interweaving or stitching one or more layers of material to be sewn. The flat sewing machine is the most basic type of sewing equipment, and is the simplest stitch during sewing, and the sewn stitch is neat and beautiful, uniform, flat and firm, fast in sewing speed, simple and convenient to operate, and simple and easy to understand in use.

The existing lockstitch sewing machines are all provided with automatic thread cutting devices, but the automatic thread cutting devices only cut off sewing threads, do not cut off redundant thread ends on cloth, and need manual treatment of the thread ends.

SUMMERY OF THE UTILITY MODEL

In view of the problems raised by the above background art, the present invention is directed to: the utility model provides an upper thread cutting mechanism of flush joint machine, solves the problem that exists among the prior art.

In order to achieve the technical purpose, the technical scheme adopted by the utility model is as follows:

an upper thread cutting mechanism of a flat sewing machine comprises a support frame, wherein the support frame is provided with a sliding seat, a first sliding rod is arranged in the sliding seat, a fixing member is arranged on the first sliding rod, the support frame is provided with a hole matched with the fixing member, the fixing member is provided with a cutting knife and a first rotating shaft, the first rotating shaft is provided with a first connecting member, the first connecting member is provided with a second rotating shaft, the second rotating shaft is connected with a second connecting member, the second connecting member is provided with a third rotating shaft, the third rotating shaft is connected with a third connecting member, the support frame is provided with a supporting member, the supporting member is provided with a fifth rotating shaft, the fifth rotating shaft is provided with a driven bevel gear, the fifth rotating shaft is connected with a third connecting member, and the supporting member is provided with a sliding groove, the supporting component is provided with a sliding block matched with the sliding groove, the sliding block is provided with a fourth rotating shaft, the fourth rotating shaft is connected with a second connecting component, the supporting component is provided with a motor, the power output end of the motor is provided with a driving bevel gear meshed with a driven bevel gear, and the supporting frame is provided with a cutting seat matched with the cutting knife;

the support frame is installed the second slide bar, second fixed block and diaphragm are installed to the second slide bar, the rotary rod is installed to the diaphragm, the threaded rod is installed to the rotary rod, threaded rod and support frame threaded connection, rotatory handle is installed to the rotary rod.

Further limit, the first sliding rod is provided with a limiting block matched with the sliding seat. The structure is designed to limit the movement of the first sliding rod within a certain range.

Further inject, the support frame install with the first fixed block of second fixed block assorted, the threaded rod passes through the bearing and installs on first fixed block. Such structural design makes the upper thread can obtain better fixed height when being cut, makes cutting knife cutting effect better.

Further, the cutting seat is provided with a screw, and the screw penetrates through the cutting seat and is arranged on the supporting frame. Such structural design makes the installation of cutting seat more stable, makes cutting knife cutting effect better.

Further, the fixing component is provided with a limiting groove matched with the first connecting component. The structure is designed to limit the rotation angle of the first connecting component within a certain range.

Further limit, the cutting seat is provided with the cutting groove that matches with the cutting knife. Due to the structural design, the cutting knife is smoother to cut.

By adopting the technical scheme of the utility model, the utility model has the following beneficial effects:

according to the utility model, through the design of the cutting knife, redundant thread ends on the cloth can be cut off, and the process of manually processing the thread ends is omitted.

Drawings

The utility model is further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic structural view of an upper thread cutting mechanism of a lockstitch sewing machine according to the present invention;

FIG. 2 is a cross-sectional view of the upper thread cutting mechanism of the lockstitch sewing machine according to the present invention;

FIG. 3 is a front view of a cutter and associated components of the upper thread cutting mechanism of the lockstitch sewing machine of the present invention;

FIG. 4 is a rear view of the cutter and associated components of the upper thread cutting mechanism of the present invention.

The main component symbols are as follows: a support frame 1; a sliding seat 2; a first slide lever 3; a limiting block 4; a fixing member 5; a cutting knife 6; a first rotation shaft 7; a first connecting member 8; a second rotation shaft 9; a second connecting member 10; a third rotation shaft 11; a third connecting member 12; a support member 13; a fifth rotation shaft 14; a driven bevel gear 15; a slide groove 16; a slide block 17; a fourth rotation shaft 18; a motor 19; a drive bevel gear 20; a cutting base 21; a screw 22; a second slide lever 23; a first fixing block 24; a second fixing block 25; a transverse plate 26; a rotating lever 27; a threaded rod 28; a rotating grip 29; a hole 30; a limiting groove 31.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in fig. 1 to 4, an upper thread cutting mechanism of a lockstitch sewing machine comprises a support frame 1, the support frame 1 is provided with a sliding seat 2, a first sliding rod 3 is arranged in the sliding seat 2, the first sliding rod 3 is provided with a fixing member 5, the support frame 1 is provided with a hole 30 matched with the fixing member 5, the fixing member 5 is provided with a cutting knife 6 and a first rotating shaft 7, the first rotating shaft 7 is provided with a first connecting member 8, the first connecting member 8 is provided with a second rotating shaft 9, the second rotating shaft 9 is connected with a second connecting member 10, the second connecting member 10 is provided with a third rotating shaft 11, the third rotating shaft 11 is connected with a third connecting member 12, the support frame 1 is provided with a support member 13, the support member 13 is provided with a fifth rotating shaft 14, the fifth rotating shaft 14 is provided with a driven bevel gear 15, the fifth rotating shaft 14 is connected with the third connecting member 12, the supporting member 13 is provided with a sliding groove 16, the supporting member 13 is provided with a sliding block 17 matched with the sliding groove 16, the sliding block 17 is provided with a fourth rotating shaft 18, the fourth rotating shaft 18 is connected with a second connecting member 10, the supporting member 13 is provided with a motor 19, the power output end of the motor 19 is provided with a driving bevel gear 20 meshed with the driven bevel gear 15, and the supporting frame 1 is provided with a cutting seat 21 matched with the cutting knife 6;

the second sliding rod 23 is installed on the support frame 1, the second fixing block 25 and the transverse plate 26 are installed on the second sliding rod 23, the rotary rod 27 is installed on the transverse plate 26, the threaded rod 28 is installed on the rotary rod 27, the threaded rod 28 is in threaded connection with the support frame 1, and the rotary handle 29 is installed on the rotary rod 27.

Description of the working principle:

firstly, placing the cloth to be subjected to facial line cutting in the support frame 1, operating the rotating handle 29 to rotate the rotating rod 27, rotating the threaded rod 28, and enabling the second sliding rod 23 to play a role in limiting the moving range, so that the second fixing block 25 vertically moves, wherein the second fixing block 25 at one end fixes the cloth, and the second fixing block 25 at the other end fixes the facial line; the motor 19 is started, the power output end of the motor 19 enables the driving bevel gear 20 to rotate to drive the driven bevel gear 15 to rotate, the fifth rotating shaft 14 is further driven to rotate, the third connecting component 12 moves along with the driving bevel gear to drive the second connecting component 10 to move, the first connecting component 8 is driven to move, the fixing component 5 is finally driven to move up and down, the cutting knife 6 is driven to move up and down, and the cutting knife 6 is inserted into the cutting seat 21 to cut the surface wire.

Preferably, the first sliding rod 3 is provided with a limit block 4 matched with the sliding seat 2. The structure is designed so that the movement of the first sliding rod 3 is limited within a certain range.

Preferably, the support frame 1 is provided with a first fixing block 24 matched with the second fixing block 25, and the threaded rod 28 is mounted on the first fixing block 24 through a bearing. Such structural design makes the facial line can obtain better fixed height when being cut, makes 6 cutting effects of cutting knife better.

Preferably, the cutting block 21 is provided with a screw 22, and the screw 22 is installed on the support frame 1 through the cutting block 21. Such structural design makes the installation of cutting seat 21 more stable, makes cutting knife 6 cutting effect better.

Preferably, the fixing member 5 is provided with a stopper groove 31 that matches the first coupling member 8. The structure is designed such that the rotation angle of the first coupling member 8 is limited within a certain range.

Preferably, the cutting block 21 is provided with a cutting groove 32 matching the cutting blade 6. Due to the structural design, the cutting knife 6 can cut more smoothly.

The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a flush joint machine's facial line thread cutting mechanism, includes support frame (1), its characterized in that: the supporting frame is characterized in that a sliding seat (2) is installed on the supporting frame (1), a first sliding rod (3) is installed in the sliding seat (2), a fixing component (5) is installed on the first sliding rod (3), the supporting frame (1) is provided with a hole (30) matched with the fixing component (5), a cutting knife (6) and a first rotating shaft (7) are installed on the fixing component (5), a first connecting component (8) is installed on the first rotating shaft (7), a second rotating shaft (9) is installed on the first connecting component (8), the second rotating shaft (9) is connected with a second connecting component (10), a third rotating shaft (11) is installed on the second connecting component (10), the third rotating shaft (11) is connected with a third connecting component (12), a supporting component (13) is installed on the supporting frame (1), and a fifth rotating shaft (14) is installed on the supporting component (13), a driven bevel gear (15) is mounted on the fifth rotating shaft (14), the fifth rotating shaft (14) is connected with a third connecting component (12), a sliding groove (16) is formed in the supporting component (13), a sliding block (17) matched with the sliding groove (16) is mounted on the supporting component (13), a fourth rotating shaft (18) is mounted on the sliding block (17), the fourth rotating shaft (18) is connected with a second connecting component (10), a motor (19) is mounted on the supporting component (13), a driving bevel gear (20) meshed with the driven bevel gear (15) is mounted at the power output end of the motor (19), and a cutting seat (21) matched with the cutting knife (6) is mounted on the supporting frame (1);

second slide bar (23) are installed in support frame (1), second fixed block (25) and diaphragm (26) are installed in second slide bar (23), rotary rod (27) are installed in diaphragm (26), threaded rod (28) are installed in rotary rod (27), threaded rod (28) and support frame (1) threaded connection, rotatory handle (29) are installed in rotary rod (27).

2. The upper thread cutting mechanism of a lockstitch sewing machine according to claim 1, wherein: and the first sliding rod (3) is provided with a limiting block (4) matched with the sliding seat (2).

3. The upper thread cutting mechanism of a lockstitch sewing machine according to claim 2, wherein: the supporting frame (1) is provided with a first fixing block (24) matched with the second fixing block (25), and the threaded rod (28) is arranged on the first fixing block (24) through a bearing.

4. The upper thread cutting mechanism of a lockstitch sewing machine according to claim 3, wherein: the cutting seat (21) is provided with a screw (22), and the screw (22) penetrates through the cutting seat (21) and is arranged on the support frame (1).

5. The upper thread cutting mechanism of the flush joint machine according to claim 4, characterized in that: the fixing component (5) is provided with a limiting groove (31) matched with the first connecting component (8).

6. The upper thread cutting mechanism of a lockstitch sewing machine according to claim 5, wherein: the cutting seat (21) is provided with a cutting groove (32) matched with the cutting knife (6).