CN118273012A - Branching sheet structure of sewing machine - Google Patents

Abstract

The invention provides a branching sheet structure of a sewing machine, and belongs to the technical field of sewing machines. The problem of the relatively poor performance stability of sewing machine among the prior art has been solved to it. The branching piece structure of the sewing machine comprises a branching piece body, wherein the branching piece body comprises a sheet-shaped installation part and a branching part which is bent relative to the installation part, an extending baffle is connected to the branching piece body, a limiting groove for accommodating a bottom line is formed between the extending baffle and the branching part of the branching piece body, the limiting groove is provided with limiting hooks on the groove wall on any side or two sides of the groove opening, and the limiting hooks extend towards the groove wall on the opposite side. The invention has the advantage of improving the stability of the performance of the sewing machine.

Description

Branching sheet structure of sewing machine

Technical Field

The invention belongs to the technical field of sewing machines, and relates to a branching sheet structure of a sewing machine.

Background

The thread separation blade is a component for separating threads when the threads are cut off on the sewing machine, as disclosed in Chinese patent literature, a thread separation mechanism capable of separating upper threads and lower threads and the sewing machine (application number: 202321401978. X) are used for being arranged at a rotating shuttle of the sewing machine to perform thread separation, and the thread separation mechanism comprises a first thread separation blade and a second thread separation blade, wherein the first thread separation blade is provided with a first cutting edge, the second thread separation blade is provided with a second cutting edge and a thread separation hook used for hooking the lower threads and enabling the upper threads to move towards the first thread separation blade, the second thread separation blade can rotate relative to the first thread separation blade to enable the second cutting edge to be meshed with or separated from the first cutting edge, the thread separation mechanism further comprises a thread separation blade which is arranged below the second thread separation blade, namely is positioned on the side surface of the second thread separation blade, which is close to the rotating shuttle, and is inserted above the thread separation blade when the upper threads are cut.

The thread cutting mechanism capable of separating the upper thread from the lower thread and the sewing machine have the following defects in the using process: although the bottom thread containing groove and the upper thread containing groove are formed in the movable knife, after thread cutting is completed, the movable knife is reset to leave the fixed knife, so that the bottom thread containing groove and the upper thread containing groove formed in the movable knife cannot well play the role of positioning the bottom thread and the upper thread when the next starting sewing is performed, at the moment, the branching piece is required to be abutted against the fixed knife again under the elastic action, the bottom thread ends are caught to ensure the stability of the positions of the bottom thread ends after thread cutting, after the actual thread cutting is completed, the upper thread can be pulled when a user takes away the cloth, the bottom thread is easy to drive to move, or when the next starting sewing is performed, the rotating tatter tail hook rotating at a high speed can hit the bottom thread to cause messy swinging, the phenomenon that the existing branching piece cannot catch the bottom thread ends sometimes occurs, the bottom thread cannot be sleeved normally when the next starting sewing is caused, the needle skipping phenomenon occurs, and therefore the performance stability of the sewing machine is poor.

Disclosure of Invention

The invention aims at solving the problems in the prior art and provides a branching sheet structure of a sewing machine. The technical problem to be solved by the invention is how to improve the stability of the performance of the sewing machine.

The aim of the invention can be achieved by the following technical scheme:

The utility model provides a branching piece structure of sewing machine, includes the branching piece body, and the branching piece body is including being flaky installation department and being the branching portion of buckling the form for the installation department, a serial communication port, be connected with the extension separation blade on the branching piece body, extend and form the spacing groove that is used for supplying the bobbin thread holding between the branching portion of separation blade body, the spacing groove has spacing hook portion on the cell wall of arbitrary one side or both sides of being close to the notch, just spacing hook portion extends towards the cell wall of contralateral setting.

This sewing machine's separated time piece structure creatively is connected with the separation blade through on the separated time piece body for form the spacing groove that is used for supplying the bobbin thread holding between the separated time portion of extension separation blade and separated time piece body, and set up spacing hook portion in order to shelter from the most of notch in notch one side or both sides of spacing groove, make after the cut line is accomplished, the bobbin thread is restricted in the spacing inslot, thereby make separated time piece body can catch the position random pendulum of bobbin thread smoothly in order to avoid the bobbin thread when again with stationary knife butt under the elastic action, thereby guarantee that the upper thread can be normal cover to play the bobbin thread when playing the seam next time, and then improve the stability of sewing machine performance.

In the branching sheet structure of the sewing machine, the upper side of the limiting hook part is provided with a wire surface which is obliquely arranged from top to bottom, and the extension surface of the wire surface is intersected with the groove wall surface of the opposite limiting groove. Because the one strand of the bottom line or/and the upper line enters from the side of the branching part, when the limit hook part is positioned on the branching part, the wire surface on the limit hook part can guide the one strand of the bottom line and the upper line, when the limit hook part is positioned on the extending baffle, the wire surface on the limit hook part can guide the one strand of the bottom line or/and the upper line when the one strand of the bottom line or the upper line swings to the side of the extending baffle under the interference of external factors, and the extension surface of the wire surface is intersected with the groove wall surface of the opposite limit groove, so that the groove wall surface of the opposite limit groove can play a blocking role, and when the one strand of the bottom line or/and the upper line reaches the gap, the one strand of the bottom line or/and the upper line can be better guided into the limit groove.

In the branching sheet structure of the sewing machine, a gap for the entry of a suture is formed between the lower end of the wire surface and the wall surface of the opposite limiting groove. The gap can supply a strand of bobbin thread and facial line to get into the spacing inslot smoothly, and after a strand of bobbin thread and facial line gets into the spacing inslot, the three structures that form of spacing hook portion, extension separation blade and separated time portion three surround only a gap can effectively block bobbin thread and facial line of being kept somewhere in the spacing inslot in order to avoid it to break away from the spacing inslot to with the position restriction of bobbin thread in certain limit, the facial line can be normal cover play the bobbin thread when guaranteeing next play seam, and then improves the stability of sewing machine performance.

In the branching piece structure of the sewing machine, the limiting groove is in a cone shape with large outside and small inside, and the connection part of the limiting hook part and the groove wall of the limiting groove and the lower end of the limiting hook part are all arc-shaped. Through setting the spacing groove to be the awl shape of big outside and small inside for after a strand wire of bottom line and facial line got into the spacing inslot, have certain activity space, simultaneously because the activity space apart from the notch is great, make a strand wire of bottom line and facial line be difficult to deviate from the spacing groove through less gap, in addition, will the junction of spacing hook portion and spacing groove wall and the lower extreme of spacing hook portion all set to be the arc form, avoid damaging a strand wire of bottom line and facial line.

In the above-mentioned branching sheet structure of a sewing machine, the limiting hook portion is integrally formed on the extending baffle sheet, the branching portion has a branching point for branching, and the upper end of the wire surface is higher than the branching point. When branching is carried out by the branching part of the branching sheet body, after a suture thread enters the limiting groove, the limiting hook part arranged on the extending baffle sheet can play a role of shielding a part of notch of the limiting groove, so that a bottom thread can be better limited in the limiting groove, in addition, the upper end of the wire surface is higher than the branching tip, so that the bottom thread or/and one strand of the upper thread enter from the branching part side, when the bottom thread or one strand of the upper thread swings to the extending baffle sheet side under the interference of external factors, the upper end of the wire surface is higher than the branching tip, so that the bottom thread or/and one strand of the upper thread swings to the wire surface and then smoothly enters the limiting groove along the wire surface, the upper thread can be normally sleeved up when the next starting seam, and the stability of the sewing machine performance is further improved.

In the above-mentioned branching sheet structure of a sewing machine, the branching portion of the branching sheet body is integrally formed with the limiting hook portion, and a space is provided between the limiting hook portion and the extending baffle sheet, and the upper end of the extending baffle sheet is higher than the upper end of the limiting hook portion. When the separated time, the wire face of the spacing hook portion that sets up on separated time portion can play the guide effect to the suture, is favorable to the suture to get into the spacing inslot, simultaneously, the spacing hook portion also can play the effect of sheltering from partly spacing groove notch for the bottom line can be better by limiting in the spacing inslot, in addition, spacing has the interval between spacing hook portion and the extension separation blade can be convenient for the suture get into the spacing inslot, through will the upper end of extension separation blade sets up to be higher than the upper end of spacing hook portion for extend the separation blade can play the barrier effect, avoid a strand of bottom line and upper thread to cross spacing hook portion and extension separation blade simultaneously, thereby can get into the spacing inslot smoothly.

In the above-mentioned branching sheet structure of the sewing machine, the branching portion of the extending baffle sheet and the branching sheet body is uniformly and integrally formed with the spacing hook portions, and a space is provided between the two spacing hook portions. Through all set up spacing hook portion on the both sides wall of notch department in spacing groove, can be better to be located the bottom line in the spacing groove and a strand wire of facial line forms spacingly through setting up two spacing hook portions to avoid the bottom line to break away from spacing groove and take place the indiscriminate pendulum in position, thereby guarantee better that facial line can be normal cover to play the bottom line when playing the seam next time, and then improve the stability of sewing machine performance better.

In the above-mentioned branching sheet structure of the sewing machine, the extending baffle sheet is integrally formed on the branching portion of the branching sheet body. Through with extension separation blade integrated into one piece on the separated time piece body, can once make the shaping, improve the intensity and the durability of part by a wide margin simultaneously.

In the branching sheet structure of the sewing machine, the extending baffle sheet is welded and fixed on the branching part of the branching sheet body. Through with extension separation blade welded fastening on the separated time piece body for structural strength after both are connected is higher, is difficult for producing too big deformation under the exogenic action, does not need additional connecting piece simultaneously, and the quality after both are connected is lighter.

In the branching sheet structure of the sewing machine, the extending baffle sheet is arranged on the branching sheet body in a stacked manner. The structure enables the extension baffle to be manufactured separately from the branching piece, reduces manufacturing difficulty, and simultaneously, the extension baffle can be replaced after being damaged by any branching piece.

Compared with the prior art, the branching piece structure of the sewing machine has the advantages that: this sewing machine's separated time piece structure creatively is connected with the separation blade through on the separated time piece body for form the spacing groove that is used for supplying the bobbin thread holding between the separated time portion of extension separation blade and separated time piece body, and set up spacing hook portion in notch one side of spacing groove, make after cutting the line and accomplish, the bobbin thread is restricted in spacing inslot, make the separated time piece body catch the position of bobbin thread smoothly in order to avoid the random pendulum of bobbin thread when being in the time of the fixed knife butt again under elastic action, thereby guarantee that the upper thread can be normal cover to play the bobbin thread when playing the seam next time, and then improve the stability of sewing machine performance.

Drawings

Fig. 1 is a schematic perspective view of a branching piece structure of a sewing machine according to the first embodiment, wherein an extending baffle is integrally formed on a branching portion.

Fig. 2 is a schematic perspective view of another angle of the thread-splitting sheet structure of the sewing machine in the first embodiment.

Fig. 3 is a schematic perspective view of a branching piece structure extension baffle of the sewing machine according to the first embodiment welded and fixed on a branching portion.

Fig. 4 is a schematic perspective view of a branching sheet structure of the sewing machine in the second embodiment.

Fig. 5 is an exploded view of the branching sheet structure of the present sewing machine in the third embodiment.

Fig. 6 is a schematic perspective view of a branching sheet structure of the sewing machine in the fourth embodiment.

In the figure, 1, a branching sheet body; 1a, an installation part; 1b, a branching part; 1b1, branching point; 2. extending the baffle; 3. a limit groove; 4. a limit hook part; 4a, wire surface; 5. a slit.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

Example 1

The utility model provides a branching piece structure of sewing machine, refers to fig. 1 and 2, includes branching piece body 1, and branching piece body 1 is including being flaky installation department 1a and being the branching portion 1b of buckling form for installation department 1a, has seted up the mounting hole on the installation department 1a, be connected with on the branching piece body 1 and extend separation blade 2, extend and form between separation blade 2 and the branching portion 1b of branching piece body 1 and be used for supplying the spacing groove 3 of bobbin thread holding, and extend separation blade 2 on the position that is close to the notch integrated into one piece have spacing hook portion 4, spacing hook portion 4 extends towards branching portion 1b and sets up, specifically, the upside of spacing hook portion 4 has the wire face 4a that from top to bottom slope set up, and the extension face of wire face 4a intersects with the cell wall face of spacing groove 3 of contralateral side. Further, the branching portion 1b has a branching tip 1b1 for branching, the upper end of the wire surface 4a is higher than the branching tip 1b1, a gap 5 for allowing a suture to enter is formed between the lower end of the wire surface 4a and the wall surface of the opposite limit groove 3, and the gap 5 facilitates a strand of a bottom thread and an upper thread to enter the limit groove 3; the limiting groove 3 is in a cone shape with large outside and small inside, and the joint of the limiting hook part 4 and the groove wall of the limiting groove 3 and the lower end of the limiting hook part 4 are arc-shaped.

In this embodiment, the extension baffle 2 is preferably integrally formed or welded to the branching portion 1b of the branching piece body 1.

Working principle: when cutting the thread, the movable knife moves towards the fixed knife with the bottom thread and the upper thread loop, the movable knife is continuously close to the fixed knife after rotating, so that the branching point 1b of the branching part 1b of the thread dividing piece body 1 can branch two threads of the upper thread loop, then the movable knife enters between the fixed knife and the branching piece body, and the movable knife is pressed against the branching part 1b of the branching piece body 1to deform downwards, so that the branching piece body 1 is far away from the fixed knife, the movable knife and the fixed knife are meshed with the cut thread, at the same time, one strand of the bottom thread and the upper thread loop is continuously moved inwards on the branching part 1b and moves into the limiting groove 3 through the gap 5, a wire surface 4a is arranged on the upper side of the limiting hook part 4 because the gap 5 is smaller, when the bottom thread or/and one strand of the upper thread loop swings to the wire surface 4a before passing through the gap 5, the wire surface 4a can guide a stranded wire of a bottom wire or/and a wire loop to move into the limit groove 3 along the wire surface 4a which is obliquely arranged from top to bottom, and the three-surface surrounding structure formed by the limit hook part 4, the extension baffle 2 and the parting part 1b can effectively block the bottom wire and the upper wire which are reserved in the limit groove 3 so as to prevent the bottom wire and the upper wire from separating from the limit groove 3, so that after the wire cutting is completed, the movable knife is reset to leave the fixed knife, the thread head formed after the bottom wire cutting is reserved in the limit groove 3, and the bottom wire reserved in the limit groove 3 can be smoothly caught when the parting sheet body 1 is abutted against the fixed knife again under the elastic action, so that the stability of the position of the bottom wire after the wire cutting is ensured, the upper wire can be normally sleeved on the bottom wire when the next seam is lifted, and the stability of the performance of the sewing machine is further improved.

Example two

The present embodiment is basically the same in structure and principle as the first embodiment, except that: referring to fig. 4, the parting line portion 1b of the parting line sheet body 1 is integrally formed with the limiting hook portion 4, and a space is provided between the limiting hook portion 4 and the extending baffle 2, the space is convenient for a strand of a base line and a surface line to enter the limiting groove 3, and in this embodiment, the upper end of the extending baffle 2 is preferably higher than the upper end of the limiting hook portion 4, so that the strand of the base line and the surface line enters from the side of the limiting hook portion 4 on the parting line portion 1b, and by setting the upper end of the extending baffle 2 to be higher than the upper end of the limiting hook portion 4, the extending baffle 2 can play a blocking role, so that the strand of the base line and the surface line is prevented from simultaneously crossing the limiting hook portion 4 and the extending baffle 2, and thus can smoothly enter the limiting groove 3.

Example III

The present embodiment is basically the same in structure and principle as the first or second embodiment, except that: referring to fig. 5, the extension baffle 2 is stacked on the branching sheet body 1. It should be noted that, in the specific implementation, the extension baffle 2 may be disposed above the branching sheet body 1 in a stacked manner, or may be disposed below the branching sheet body 1 in a stacked manner.

Example IV

The present embodiment is basically the same in structure and principle as the first embodiment or the second embodiment or the third embodiment, except that: referring to fig. 6, the limiting hooks 4 are formed on the branching portion 1b of the extending baffle 2 and the branching portion body 1 in a uniform and integrated manner, and a space is provided between the two limiting hooks 4, and the space is convenient for a strand of the bottom wire and the surface wire loop to enter the limiting groove 3. In specific implementation, the two limit hooks 4 may be disposed opposite to each other or may be disposed in a staggered manner (not shown in the figure), in this embodiment, the upper end of the limit hook 4 located on the extension baffle 2 is preferably higher than the upper end of the limit hook 4 located on the branching portion 1b, on the one hand, one strand of the base thread and the upper thread enters from the side of the limit hook 4 located on the branching portion 1b, and by setting the upper end of the limit hook 4 located on the extension baffle 2 to be higher than the upper end of the limit hook 4 located on the branching portion 1b, the limit hook 4 on the extension baffle 2 can play a blocking role, so that one strand of the base thread and the upper thread is prevented from crossing the two limit hooks 4 at the same time, and thus can enter the limit groove 3 smoothly; on the other hand, two dislocation-arranged limit hooks 4 can form double insurance, even if the bottom thread is separated from the first limit hook 4, the second limit hook 4 can block the bottom thread, and the setting position of the second limit hook 4 is just consistent with the direction that the bottom thread is separated from the first limit hook 4, so that the blocking effect can be better exerted, the final bottom thread is still kept in the limit groove 3, the upper thread can be normally sleeved on the bottom thread when the next seam is formed, and the stability of the performance of the sewing machine is further improved.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. The utility model provides a branching piece structure of sewing machine, includes branching piece body (1), branching piece body (1) including being flaky installation department (1 a) and being separated time portion (1 b) of buckling form for installation department (1 a), a serial communication port, be connected with on branching piece body (1) and extend separation blade (2), extend and form spacing groove (3) that are used for supplying the bobbin thread holding between separated time portion (1 b) of separation blade body (1), spacing groove (3) have spacing hook portion (4) on the cell wall of arbitrary one side or both sides of being close to the notch, just spacing hook portion (4) extend towards the cell wall of contralateral setting.

2. The branching piece structure of a sewing machine according to claim 1, wherein the upper side of the limit hook portion (4) is provided with a wire surface (4 a) which is inclined from top to bottom, and an extension surface of the wire surface (4 a) intersects with a groove wall surface of the opposite limit groove (3).

3. The branching piece structure of a sewing machine according to claim 2, wherein a slit (5) for the entry of a thread is formed between the lower end of the thread guide surface (4 a) and the wall surface of the opposite limiting groove (3).

4. A branching piece structure of a sewing machine according to claim 3, wherein the limiting groove (3) is in a cone shape with a large outside and a small inside, and the connection part of the limiting hook part (4) and the groove wall of the limiting groove (3) and the lower end of the limiting hook part (4) are arc-shaped.

5. The branching piece structure of a sewing machine according to claim 2, 3 or 4, wherein the limiting hook portion (4) is integrally formed on the extending baffle (2), the branching portion (1 b) has a branching tip (1 b 1) for branching, and the upper end of the wire guide surface (4 a) is higher than the branching tip (1 b 1).

6. The thread-separating sheet structure of a sewing machine according to claim 1,2, 3 or 4, wherein the thread-separating hook portion (4) is integrally formed on the thread-separating portion (1 b) of the thread-separating sheet body (1), a space is provided between the thread-separating hook portion (4) and the extending baffle sheet (2), and the upper end of the extending baffle sheet (2) is higher than the upper end of the thread-separating hook portion (4).

7. The thread-separating sheet structure of a sewing machine according to claim 1,2, 3 or 4, wherein the thread-separating portion (1 b) of the thread-separating sheet body (1) and the extending baffle sheet (2) are integrally formed with the spacing hooks (4), and a space is provided between the two spacing hooks (4).

8. The branching sheet structure of a sewing machine according to claim 1 or 2 or 3 or 4, wherein the extension baffle (2) is integrally formed on the branching portion (1 b) of the branching sheet body (1).

9. A branching piece structure of a sewing machine according to claim 1 or 2 or 3 or 4, wherein the extension flap (2) is welded to the branching portion (1 b) of the branching piece body (1).

10. A thread-splitting structure of a sewing machine according to claim 1 or 2 or 3 or 4, characterized in that the extension flap (2) is arranged in a stack on the thread-splitting body (1).