CN213142402U

CN213142402U - Thread trimming mechanism of sewing machine

Info

Publication number: CN213142402U
Application number: CN202021921863.XU
Authority: CN
Inventors: 朱庆联
Original assignee: Jiashan Lianyu Clothing Co ltd
Current assignee: Jiashan Lianyu Clothing Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-05-07
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a sewing machine thread trimming mechanism, including fixed knot structure, drive structure, transmission structure, shearing mechanism, stopper, third pivot, spout, blade holder, blade, pulley and bearing structure, the beneficial effects of the utility model are that: fixed connection between blade holder and the stopper, it is perpendicular between blade holder and the stopper, fixed connection between blade holder and the blade, and then be convenient for fix the device in the assigned position through fixed knot structure, it is fixed with drive structure through bearing structure, control drive structure, drive structure drives transmission structure, transmission structure drives the stopper, make and take place to rotate between stopper and the fixed box, two stoppers rotate opposite direction, and then make the blade holder take place to rotate along with the stopper, the blade holder drives the blade and takes place to rotate, two blades rotate opposite direction, and then make two blades draw close, and then cut off the fine rule, thread trimming speed has been improved greatly, sewing efficiency is improved.

Description

Thread trimming mechanism of sewing machine

Technical Field

The utility model relates to a thread trimming mechanism specifically is a sewing machine thread trimming mechanism, belongs to sewing equipment technical field.

Background

Garment design is one of the fastest changing design industries in the world today, and the requirements of modern people on garments are not limited to cold defense, but pursue fashion and beauty, so that the garments have integrated a large number of fashion elements according to incomplete statistics: the industrial chain of the whole clothing industry lives 1.7 hundred million people in China, which is more than 12 percent of the total population in China, thus the employment is easy and the income is stable, and the sewing machine is an essential tool in the clothing design process.

However, when the conventional sewing machine sews clothes, the fine thread is generally required to be cut off by scissors, and the thread is generally required to be pulled outwards for a certain distance and then cut off, so that materials are wasted, the thread cutting process is time-consuming and labor-consuming, and the sewing efficiency is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sewing machine thread trimming mechanism just in order to solve above-mentioned problem, make the thread trimming convenient succinct more, saved the material, improved sewing efficiency greatly.

The utility model achieves the above purpose through the following technical proposal, the thread trimming mechanism of the sewing machine comprises a fixed box, the top end of the fixed box is provided with a fixed structure, the inside of the fixed box is provided with a transmission structure, the transmission structure is connected with a driving structure, the driving structure is provided with a supporting structure, the transmission structure is connected with a shearing structure, the shearing structure comprises a limiting block, a third rotating shaft, a sliding chute, a tool apron, a blade and a pulley, the third rotating shaft is fixedly connected with the fixed box, the third rotating shaft is rotatably connected with the limiting block, the fixed box is provided with two symmetrical limiting blocks, the rotating directions of the two limiting blocks are opposite, the tool apron is fixedly connected with the limiting block, the tool apron is vertical to the limiting block, and the tool apron is fixedly connected with the blade, two be equipped with two relatively on the stopper the pulley, the pulley with rotate between the stopper and be connected, be equipped with on the stopper the spout, the shape of pulley is the cylinder that the diameter degressive to the centre.

Preferably, in order to fix the fixing box conveniently, the fixing structure includes a fixing plate and an empty slot, the empty slot is disposed inside the fixing plate, and the fixing plate is fixedly connected with the fixing box.

Preferably, in order to facilitate the driving structure, the supporting structure includes a supporting plate, a supporting block and a fourth rotating shaft, the supporting plate is fixedly connected to the supporting block, and the fourth rotating shaft is rotatably connected to the supporting block.

Preferably, in order to facilitate the pedal to reset, the driving structure comprises a pedal, a driving rod and a first reset spring, the pedal is fixedly connected with the driving rod, the driving rod is rotatably connected with the fourth rotating shaft, one end of the first reset spring is fixed on the supporting plate, and the other end of the first reset spring is fixed on the driving rod.

Preferably, for the convenience of making the stopper rotates, transmission structure includes first pivot, fixed block, driving rope, transfer line, driving plate and second pivot, first pivot with fixed connection between the actuating lever, first pivot with rotate between the fixed block and be connected, the one end of driving rope is fixed in the fixed block, the other end of driving rope is fixed in the transfer line, the transfer line with sliding connection between the fixed box, the transfer line with fixed connection between the driving plate, the driving plate with rotate between the second pivot and be connected, the second pivot in the inside of spout with rolling connection between the stopper, the driving plate with the shape that the transfer line is connected is "Y" shape.

Preferably, in order to facilitate the reset of the transmission rod, the transmission structure further comprises a second reset spring, the second reset spring is arranged on the periphery of the transmission rod, one end of the second reset spring is fixed on the transmission plate, and the other end of the second reset spring is fixed on the fixing box.

The utility model has the advantages that: the top end of the fixed box is provided with a fixed structure, the inside of the fixed box is provided with a transmission structure, the transmission structure is connected with a driving structure, the driving structure is provided with a supporting structure, the transmission structure is connected with a shearing structure, the third rotating shaft is fixedly connected with the fixed box, the third rotating shaft is rotatably connected with a limiting block, the fixed box is provided with two symmetrical limiting blocks, the rotating directions of the two limiting blocks are opposite, the tool apron is fixedly connected with the limiting blocks, the tool apron is vertical to the limiting blocks, the tool apron is fixedly connected with the blade, the two limiting blocks are provided with two opposite pulleys, the pulleys are rotatably connected with the limiting blocks, the limiting blocks are provided with chutes, the device is conveniently fixed at a designated position through the fixed structure, the driving structure is fixed through the supporting structure, the driving structure is controlled, the driving, the limiting block and the fixing box are rotated, the cutter holder is rotated along with the limiting block, the cutter holder drives the blades to rotate, the two blades are closed, the thin line is cut off, the line cutting speed is greatly improved, and the sewing efficiency is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a coupling structure of the transmission structure and the fixing case shown in FIG. 1;

FIG. 3 is a schematic view of the linkage of the drive structure and the shear structure shown in FIG. 2;

fig. 4 is an enlarged view of the portion a shown in fig. 2.

In the figure: 1. fixed knot constructs, 11, the fixed plate, 12, the dead slot, 2, fixed box, 3, drive structure, 31, the footboard, 32, the actuating lever, 33, first reset spring, 4, transmission structure, 41, first pivot, 42, the fixed block, 43, the driving rope, 44, the transfer line, 45, second reset spring, 46, the driving plate, 47, the second pivot, 5, the shear structure, 51, the stopper, 52, the third pivot, 53, the spout, 54, the blade holder, 55, the blade, 56, the pulley, 6, bearing structure, 61, the backup pad, 62, the supporting shoe, 63, the fourth pivot.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a thread trimming mechanism of a sewing machine includes a fixing box 2, a fixing structure 1 is disposed at the top end of the fixing box 2, a transmission structure 4 is disposed inside the fixing box 2, the transmission structure 4 is connected with a driving structure 3, the driving structure 3 is provided with a supporting structure 6, the transmission structure 4 is connected with a shearing structure 5, the shearing structure 5 includes a limiting block 51, a third rotating shaft 52, a sliding chute 53, a tool apron 54, a blade 55 and a pulley 56, the third rotating shaft 52 is fixedly connected with the fixing box 2, the third rotating shaft 52 is rotatably connected with the limiting block 51, the fixing box 2 is provided with two symmetrical limiting blocks 51, the rotating directions of the two limiting blocks 51 are opposite, the tool apron 54 is fixedly connected with the limiting blocks 51, and the tool apron 54 is perpendicular to the limiting blocks 51, the tool apron 54 is fixedly connected with the blade 55, two opposite pulleys 56 are arranged on the two limiting blocks 51, the pulleys 56 are rotatably connected with the limiting blocks 51, the sliding grooves 53 are arranged on the limiting blocks 51, and the pulleys 56 are cylinders with diameters gradually decreasing towards the middle.

As a technical optimization scheme of the utility model, fixed knot constructs 1 including fixed plate 11 and dead slot 12, dead slot 12 is located the inside of fixed plate 11, fixed plate 11 with fixed connection between the fixed box 2.

As a technical optimization scheme of the utility model, bearing structure 6 includes backup pad 61, supporting shoe 62 and fourth pivot 63, backup pad 61 with fixed connection between the supporting shoe 62, fourth pivot 63 with rotate between the supporting shoe 62 and connect.

As a technical optimization scheme of the utility model, drive structure 3 includes footboard 31, actuating lever 32 and first reset spring 33, footboard 31 with fixed connection between the actuating lever 32, actuating lever 32 with rotate between the fourth pivot 63 and connect, the one end of first reset spring 33 is fixed in backup pad 61, the other end of first reset spring 33 is fixed in actuating lever 32.

As a technical optimization scheme of the utility model, drive structure 4 includes first pivot 41, fixed block 42, driving rope 43, transfer line 44, driving plate 46 and second pivot 47, first pivot 41 with fixed connection between the actuating lever 32, first pivot 41 with rotate between the fixed block 42 and connect, the one end of driving rope 43 is fixed in fixed block 42, the other end of driving rope 43 is fixed in transfer line 44, transfer line 44 with sliding connection between the fixed box 2, transfer line 44 with fixed connection between the driving plate 46, driving plate 46 with rotate between the second pivot 47 and connect, second pivot 47 in the inside of spout 53 with roll connection between stopper 51, driving plate 46 with the shape that transfer line 44 connects is "Y" shape.

As a technical optimization scheme of the utility model, transmission structure 4 still includes second reset spring 45, second reset spring 45 locates the periphery of transfer line 44, second reset spring 45's one end is fixed in driving plate 46, second reset spring 45's the other end is fixed in fixed box.

As a technical optimization scheme of the utility model, first drive structure 3 includes first actuating lever 31, first pivot 32, slider 33 and fixture block 34, rotates between first actuating lever 31 and the first pivot 32 to be connected, and first pivot 32 is fixed in slider 33, sliding connection between slider 33 and the first solid fixed ring 21, and fixture block 34 is fixed in first actuating lever 31, and first actuating lever 31's shape is convex, and the portable distance of slider 33 is greater than the width of dead slot 23.

When the utility model is used, firstly, the fixing plate 11 is fixed at a designated position by screws, then the supporting plate 61 is fixed, the pedal 31 is treaded by feet, the pedal 31 moves to drive the driving rod 32 to rotate around the fourth rotating shaft 63, meanwhile, the driving rod 32 compresses the first reset spring 33 downwards, the driving rod 32 drives the fixing block 42 to move, the fixing block 42 pulls the driving rope 43, the middle of the driving rope 43 is provided with a guide wheel, the driving rope 43 pulls the driving rod 44, the driving rod 44 slides with the fixing box 2 to drive the driving plate 46, the driving plate 46 compresses the second reset spring 45, the driving plate 46 drives the second rotating shaft 47, the second rotating shaft 47 rolls with the limiting block 51, thereby the two limiting blocks 51 rotate with the fixing box 2, the rotating directions of the two limiting blocks 51 are opposite, the limiting block 51 drives the cutter holder 54 to rotate, thereby the blade 55 rotates, the two blades 55 are close to each other to cut the thin line, the pedal 31 is reset under the action of the first reset spring 33, the transmission rod 44 is reset under the action of the second reset spring 45, the blades 55 are reset, the limiting block 51 is provided with the pulley 56, the pulley 56 is a cylinder with the diameter gradually reduced towards the middle, the thin line is convenient to fix, the line cutting speed is greatly improved, and the sewing efficiency is improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a sewing machine thread trimming mechanism, includes fixed box (2), its characterized in that: the top end of the fixed box (2) is provided with a fixed structure (1), the inside of the fixed box (2) is provided with a transmission structure (4), the transmission structure (4) is connected with a driving structure (3), the driving structure (3) is provided with a supporting structure (6), the transmission structure (4) is connected with a shearing structure (5), the shearing structure (5) comprises a limiting block (51), a third rotating shaft (52), a sliding groove (53), a tool apron (54), a blade (55) and a pulley (56), the third rotating shaft (52) is fixedly connected with the fixed box (2), the third rotating shaft (52) is rotatably connected with the limiting block (51), the fixed box (2) is provided with two symmetrical limiting blocks (51), the rotating directions of the two limiting blocks (51) are opposite, the tool apron (54) is fixedly connected with the limiting block (51), the cutter holder (54) is perpendicular to the limiting blocks (51), the cutter holder (54) is fixedly connected with the blades (55), two opposite pulleys (56) are arranged on the limiting blocks (51), the pulleys (56) are rotatably connected with the limiting blocks (51), the sliding grooves (53) are formed in the limiting blocks (51), and the pulleys (56) are cylinders with diameters gradually decreased towards the middle.

2. The thread trimming mechanism of a sewing machine as claimed in claim 1, wherein: fixed knot constructs (1) including fixed plate (11) and dead slot (12), dead slot (12) are located the inside of fixed plate (11), fixed plate (11) with fixed connection between fixed box (2).

3. The thread trimming mechanism of a sewing machine as claimed in claim 1, wherein: the supporting structure (6) comprises a supporting plate (61), a supporting block (62) and a fourth rotating shaft (63), the supporting plate (61) is fixedly connected with the supporting block (62), and the fourth rotating shaft (63) is rotatably connected with the supporting block (62).

4. The thread trimming mechanism of a sewing machine as claimed in claim 3, wherein: drive structure (3) are including footboard (31), actuating lever (32) and first reset spring (33), footboard (31) with fixed connection between actuating lever (32), actuating lever (32) with rotate between fourth pivot (63) and be connected, the one end of first reset spring (33) is fixed in backup pad (61), the other end of first reset spring (33) is fixed in actuating lever (32).

5. The thread trimming mechanism of a sewing machine as claimed in claim 4, wherein: the transmission structure (4) comprises a first rotating shaft (41), a fixed block (42), a transmission rope (43), a transmission rod (44), a transmission plate (46) and a second rotating shaft (47), the first rotating shaft (41) is fixedly connected with the driving rod (32), the first rotating shaft (41) is rotatably connected with the fixed block (42), one end of the transmission rope (43) is fixed on the fixed block (42), the other end of the transmission rope (43) is fixed on the transmission rod (44), the transmission rod (44) is slidably connected with the fixed box (2), the transmission rod (44) is fixedly connected with the transmission plate (46), the transmission plate (46) is rotatably connected with the second rotating shaft (47), and the second rotating shaft (47) is connected with the inside of the sliding groove (53) and the limiting block (51) in a rolling manner, the shape of the connection between the transmission plate (46) and the transmission rod (44) is Y-shaped.

6. The thread trimming mechanism of a sewing machine as claimed in claim 5, wherein: the transmission structure (4) further comprises a second reset spring (45), the second reset spring (45) is arranged on the periphery of the transmission rod (44), one end of the second reset spring (45) is fixed on the transmission plate (46), and the other end of the second reset spring (45) is fixed on the fixed box (2).