CN215668494U

CN215668494U - Stepping motor driven thread trimming device for flat seaming machine

Info

Publication number: CN215668494U
Application number: CN202120846278.6U
Authority: CN
Inventors: 付和平; 潘小强; 靳松
Original assignee: Xian Typical Industry Co Ltd
Current assignee: Xian Typical Industry Co Ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2022-01-28
Anticipated expiration: 2031-04-23

Abstract

The utility model relates to a stepping motor driven thread trimming device for a flat seaming machine. The technical problem that the thread trimming structure driven by the electromagnet of the existing flat seaming machine is not stable enough is solved. The technical scheme adopted by the utility model comprises a stepping motor, wherein the swinging angle of a presser foot lifting cam is controlled by reversely rotating the stepping motor; the presser foot lifting cam drives the presser foot lifting guide rod to do linear motion, the presser foot lifting guide rod pushes the roller to lift the presser foot roller mounting plate seat to deflect for a certain angle so as to realize the presser foot lifting mechanism, the swing angle of the thread trimming cam is controlled through forward rotation of the stepping motor, the thread trimming cam drives the swing rod to swing, the swing rod drives the U-shaped swing rod crank so as to enable the thread trimming driving shaft to do linear motion and drive the thread trimming cutter connecting rod to do linear motion, the stepping motor rotates reversely, the thread trimming driving shaft is reset under the action of the spring, and the cutter outlet action of the thread trimming cutter is completed.

Description

Stepping motor driven thread trimming device for flat seaming machine

Technical Field

The utility model relates to the technical field of clothing manufacturing, in particular to a stepping motor driven thread trimming device for a flat seaming machine.

Background

A flat seaming machine is a machine that uses one or more sewing threads to form one or more stitches in a seam material, thereby interweaving or stitching one or more layers of the seam material. The flat seaming machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient.

The flat seaming machine thread trimming on the current market is mostly an electromagnet and cylinder driven thread trimming mechanism, and the operation is very inconvenient because the stroke of the electromagnet and the cylinder is not stable enough and the phenomena of continuous thread trimming or bottom thread trimming occur.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stepping motor driven thread trimming device for a flat seaming machine, which aims to solve the technical problems that the electromagnet driven thread trimming structure of the existing flat seaming machine is not stable enough and the like.

In order to achieve the purpose, the utility model adopts the following technical scheme: a stepping motor driven thread trimming device for a flat seaming machine comprises a stepping motor, wherein the stepping motor is arranged on a stepping motor base, a key is arranged in an on-shaft groove of the stepping motor, a presser foot lifting cam, a gasket, a detection magnetic ring and a thread trimming cam are sequentially arranged in the on-shaft groove of the stepping motor from top to bottom through the key, and the thread trimming cam is fixed on a shaft of the stepping motor through the gasket and a screw; the method is characterized in that: the pressure foot lifting roller mounting plate is characterized by further comprising a pressure foot lifting roller mounting plate, wherein one end of the pressure foot lifting roller mounting plate is fixedly arranged on the pressure foot lifting roller mounting plate seat; the other end is fixedly provided with a roller through an axial position screw;

the stepping motor base is a hollow special-shaped piece, the stepping motor is arranged in a groove in the upper surface of the stepping motor base, a through hole is formed in one side of the stepping motor base, a trimming drive shaft left shaft sleeve and a trimming drive shaft right shaft sleeve are respectively arranged at two ends of the through hole, trimming drive shafts are arranged in the trimming drive shaft left shaft sleeve and the trimming drive shaft right shaft sleeve in a penetrating mode, a spring and an oscillating bar crank are sleeved on the trimming drive shaft between the trimming drive shaft left shaft sleeve and the trimming drive shaft right shaft sleeve, and a trimming connecting rod is further arranged on the trimming drive shaft at the extending end; one side of the trimming cam is attached with a swing rod, and one end of the swing rod is arranged in a groove on one side of a swing rod crank;

the right side surface of the upper part of the stepping motor base is provided with a hole, a presser foot lifting guide rod sleeve is arranged in the hole and is fastened in the hole of the stepping motor base through a screw, a limiting pin is arranged on the presser foot lifting guide rod sleeve, a presser foot lifting guide rod with a groove on one side is arranged in the presser foot lifting guide rod sleeve, the limiting pin is arranged in the groove of the presser foot lifting guide rod in a sliding mode, one end of the presser foot lifting guide rod is tangent to a presser foot lifting cam, and the other end of the presser foot lifting guide rod is tangent to a roller.

Further, the swing rod is connected with the stepping motor base through an axial position screw.

Further, the presser foot lifting guide rod sleeve is fastened on the stepping motor base through screws.

Furthermore, the left shaft sleeve and the right shaft sleeve of the trimming drive shaft are fixed on the stepping motor base.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the thread trimming cutter set and the presser foot are controlled by the stepping motor, so that the response speed is high, the adjustment is convenient, the control is efficient and reliable, and the automation degree is high;

2. the utility model utilizes the stepping motor to control the wire cutting, thereby saving energy, reducing consumption and being green and environment-friendly.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection of a rocker crank and a rocker;

FIG. 3 is a schematic diagram of the present invention showing the elimination of the connection of the components of the stepper motor base;

FIG. 4 is a schematic view of the attachment of the present invention to a sewing machine housing;

FIG. 5 is a left side view of FIG. 4;

in the figure: 1. a vehicle shell 2 and a base; 3. a stepping motor; 4. a first screw; 5. a thread trimmer connecting rod; 6. a second screw; 7. a thread trimming drive shaft; 8. a stepping motor base; 9. a left shaft sleeve of the trimming drive shaft; 10. a right shaft sleeve of the trimming drive shaft; 11. a detector; 12. a third screw; 13. a key; 14. lifting a presser foot cam; 15. a gasket; 16. detecting a magnetic ring; 17. a trimming cam; 18. a gasket; 19. a fourth screw; 20. a fifth screw; 21. an axial screw; 22. a swing rod; 23. a gasket; 24, a limit pin; 25. lifting a guide rod sleeve of the presser foot; 26 lifting the presser foot guide bar; 27. lifting a presser foot roller mounting plate; 28. a pressure foot roller mounting plate seat is lifted; 29. a gasket; 30. a sixth screw; 31. an axial screw; 32. a nut; 33. lifting a presser foot roller; 34. a spring; 35. a swing rod crank; 36. a seventh screw; 37. eighthly, screwing; 38. and a cushion block.

The specific implementation mode is as follows:

the present invention will be described in detail below with reference to the drawings and examples.

The utility model relates to a stepping motor driven thread trimming device for a flat seaming machine, which is characterized in that as shown in figures 1-5, a thread trimming structure is arranged on a shell 1 of the sewing machine and comprises a stepping motor 3, a stepping motor seat 8, a thread trimming driving shaft 7, a presser foot lifting roller mounting plate 27, a presser foot lifting roller mounting plate seat 28 and a swing rod crank 35; the stepping motor base 8 is a hollow special-shaped piece, and the stepping motor base 8 is fixed on the sewing machine base 2 through a screw eight 37 and a cushion block 38; the stepping motor 3 is fixedly arranged in a groove on the upper surface of the stepping motor base 8 through a first screw 4, a key 13 is arranged in an axial groove of the stepping motor 3, a presser foot lifting cam 14, a gasket 15, a detection magnetic ring 16 and a trimming cam 17 are sequentially arranged in the axial groove of the stepping motor 3 from top to bottom through the key 13, and the stepping motor is fixed on the shaft of the stepping motor 3 through a gasket 18 and a fourth screw 19;

a through hole is formed in one side of the stepping motor base 8, a trimming drive shaft left shaft sleeve 9 and a trimming drive shaft right shaft sleeve 10 are fixedly arranged at two ends of the through hole respectively, a trimming drive shaft 7 penetrates through the trimming drive shaft left shaft sleeve 9 and the trimming drive shaft right shaft sleeve 10, a spring 34 and an oscillating bar crank 35 are sleeved on the trimming drive shaft 7 between the trimming drive shaft left shaft sleeve 9 and the trimming drive shaft right shaft sleeve 10, the oscillating bar crank 35 is fixedly arranged on the trimming drive shaft 7 through a screw seven 36, and a trimming connecting rod 5 is further arranged on the trimming drive shaft 7 at the extending end through a screw two 6; the trimming cam 17 is closely provided with a swing rod 22, the swing rod 22 is connected with the stepping motor base 8 through a shaft position screw 21, one end of the swing rod 22 is arranged in a groove at one side of a swing rod crank 35, and the swing rod crank 35 is pushed to move so as to drive the trimming driving shaft 7 to do linear motion;

the detector 11 is installed on the stepping motor base 8 through a third screw 12 and a gasket 23 and used for limiting the deflection angle of the motor.

A hole is formed in the right side surface of the stepping motor base 8, a presser foot lifting guide rod sleeve 25 is arranged in the hole, a pin 24 is fixedly arranged on the presser foot lifting guide rod sleeve 25, a presser foot lifting guide rod 26 with a groove at one side is arranged in the presser foot lifting guide rod sleeve 25, a limiting pin 24 is arranged in the groove of the presser foot lifting guide rod 26 in a sliding mode to prevent the presser foot lifting guide rod from rotating, one end of the presser foot lifting guide rod 26 is tangent to the presser foot lifting cam 14, and the other end of the presser foot lifting guide rod is tangent to the roller 33; one end of the pressure foot lifting roller mounting plate 27 is fixedly arranged on the pressure foot lifting roller mounting plate seat 28 through a screw six 30 and a gasket 29; the roller 33 is connected to the presser foot lifting roller mounting plate 27 by means of an axial screw 31 and a nut 32.

The presser foot lifting guide rod sleeve 25 is fastened on the stepping motor base 8 through a screw five 20.

The working process of the utility model is as follows:

the swinging angle of the presser foot lifting cam 14 is reversely rotated and controlled by the stepping motor 3; the presser foot lifting cam 14 drives the presser foot lifting guide rod 26 to make a linear motion, and the presser foot lifting guide rod 26 pushes the roller 33 to deflect the presser foot lifting roller mounting plate seat 28 by a certain angle so as to realize the presser foot lifting mechanism of the presser foot, which is the prior art and will not be described in detail herein. The swinging angle of the trimming cam 17 is controlled by the forward rotation of the stepping motor 3, the trimming cam 17 drives the swing rod 22 to swing, the swing rod 22 drives the U-shaped swing rod crank 35 so as to enable the trimming driving shaft 7 to do linear motion and drive the trimming cutter connecting rod 5 to do linear motion, the stepping motor 3 rotates reversely, the trimming driving shaft 7 is reset under the action of the spring 34, and the cutter discharging action of the trimming cutter is completed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. A stepping motor driven thread trimming device for a flat seaming machine comprises a stepping motor (3), wherein the stepping motor (3) is arranged on a stepping motor base (8), a key (13) is arranged in an on-shaft groove of the stepping motor (3), the key (13) is arranged in the on-shaft groove of the stepping motor (3), a presser foot lifting cam (14), a gasket (15), a detection magnetic ring (16) and a thread trimming cam (17) are sequentially arranged from top to bottom, and are fixed on a shaft of the stepping motor (3) through the gasket (18) and a screw (19); the method is characterized in that: the pressure foot lifting roller mounting plate is characterized by further comprising a pressure foot lifting roller mounting plate (27), wherein one end of the pressure foot lifting roller mounting plate (27) is fixedly arranged on a pressure foot lifting roller mounting plate seat (28); the other end is fixedly provided with a roller (33) through an axial screw (33);

the stepping motor base (8) is a hollow special-shaped piece, the stepping motor (3) is arranged in a groove in the upper surface of the stepping motor base (8), a through hole is formed in one side of the stepping motor base (8), a trimming drive shaft left shaft sleeve (9) and a trimming drive shaft right shaft sleeve (10) are respectively arranged at two ends of the through hole, a trimming drive shaft (7) penetrates through the trimming drive shaft left shaft sleeve (9) and the trimming drive shaft right shaft sleeve (10), a spring (34) and an oscillating bar crank (35) are sleeved on the trimming drive shaft (7) between the trimming drive shaft left shaft sleeve (9) and the trimming drive shaft right shaft sleeve (10), and a trimming connecting rod (5) is further arranged on the trimming drive shaft (7) at the extending end; one side of the trimming cam (17) is provided with a swing rod (22) in an attaching manner, and one end of the swing rod (22) is arranged in a groove at one side of a swing rod crank (35);

the stepping motor base is characterized in that a hole is formed in the right side face of the upper portion of the stepping motor base (8), a presser foot lifting guide rod sleeve (25) is arranged in the hole and is fastened in the hole of the stepping motor base (8) through a screw (20), a limiting pin (24) is arranged on the presser foot lifting guide rod sleeve (25), a presser foot lifting guide rod (26) with a groove in one side is arranged in the presser foot lifting guide rod sleeve (25), the limiting pin (24) is arranged in the groove of the presser foot lifting guide rod (26) in a sliding mode, one end of the presser foot lifting guide rod (26) is tangent to a presser foot lifting cam (14), and the other end of the presser foot lifting guide rod is tangent to a roller (33).

2. The stepping motor-driven thread trimming device for the flat seaming machine as claimed in claim 1, wherein: the swing rod (22) is connected with the stepping motor base (8) through a shaft position screw (21).

3. The stepping motor-driven thread trimming device for flat seaming machines according to claim 1 or 2, characterized in that: the presser foot lifting guide rod sleeve (25) is fastened on the stepping motor base (8) through a screw (20).

4. The stepping motor-driven thread trimming device for the flat seaming machine as claimed in claim 3, wherein: and the trimming drive shaft left shaft sleeve (9) and the trimming drive shaft right shaft sleeve (10) are fixed on the stepping motor base (8).