CN212560682U

CN212560682U - Thread releasing device and sewing machine with same

Info

Publication number: CN212560682U
Application number: CN201921002803.5U
Authority: CN
Inventors: 傅万滨
Original assignee: Zhejiang Dole Sewing Machine Co ltd
Current assignee: Zhejiang Dole Sewing Machine Co ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2021-02-19
Anticipated expiration: 2029-06-28

Abstract

The utility model provides a thread slackening device and have its sewing machine, wherein, thread slackening device is used for compressing tightly or releasing the thread trapper to make the thread trapper realize the thread trapper or the action of loosing the thread, thread slackening device includes: the loosening plate is arranged on the side of the wire clamping device and is abutted against a wire clamping sheet of the wire clamping device; the thread loosening assembly comprises a thread loosening thimble, the ejection end face of the thread loosening thimble is opposite to the thread loosening plate, at least part of the thread loosening thimble is movably arranged relative to the thread loosening plate to push the thread loosening plate to move towards the direction far away from the thread clamping device so as to loosen threads, and the problem that a thread loosening device in the prior art is complex in structure is solved.

Description

Thread releasing device and sewing machine with same

Technical Field

The utility model relates to a sewing machine field particularly, relates to a thread take-up device and have its sewing machine.

Background

At present, in the sewing process of a sewing machine, the condition that sewing threads are wound together usually called as a bird nest occurs, so that most sewing machines are provided with bird nest prevention devices; the existing bird's nest prevention device causes the sewing thread to be tensed, and the sewing thread is easily broken during the rising process of the machine needle, so that the thread needs to be loosened by an auxiliary device.

However, most of the existing auxiliary thread releasing devices are complex in structure, occupy a large amount of installation space of the sewing machine, and reduce the installation efficiency of operators.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a thread take-up device and have its sewing machine to solve the complicated problem of thread take-up device structure among the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided a thread releasing device for pressing or releasing a thread gripper so that the thread gripper realizes a thread gripping or releasing action, the thread releasing device comprising: the loosening plate is arranged on the side of the wire clamping device and is abutted against a wire clamping sheet of the wire clamping device; the thread loosening assembly comprises a thread loosening thimble, the ejection end face of the thread loosening thimble is opposite to the thread loosening plate, and at least part of the thread loosening thimble is movably arranged relative to the thread loosening plate to push the thread loosening plate to move towards the direction far away from the thread clamping device so as to loosen threads.

Further, the thread releasing assembly further comprises: the magnetic part, magnetic part and pine line thimble cooperate to make the direction motion of the line loosening board of orientation under the magnetic force effect of magnetic part of pine line thimble and with the line loosening board butt in order to promote the line loosening board.

Furthermore, the magnetic part is an electromagnet, and at least part of the thread releasing thimble is positioned in a cavity of the electromagnet.

Furthermore, the magnetic part is a magnet block, and one end of the thread loosening thimble far away from the thread loosening plate is opposite to the magnet block so as to push the thread loosening thimble to move through the magnetic force generated by the magnet block.

Furthermore, one end, far away from the thread loosening plate, of the thread loosening thimble is provided with an operating groove, so that the thread loosening thimble is pushed to move towards the direction of the thread loosening plate by pressing an operating piece matched with the operating groove.

Further, the thread releasing device further comprises: the installation axle, the line trapper and loose line board are all established and are established on the installation axle, are equipped with the installation department on the installation axle, and the at least part of pine line thimble is installed in the installation department, and the extension direction removal of pine line thimble along the installation department is in order to promote loose line board.

Further, the mounting portion includes: mounting holes; the first axis body and the second axis body, first axis body and second axis body set up relatively, constitute accommodation space between the first axis body and the second axis body, mounting hole and accommodation space intercommunication, stretch into to accommodation space behind the mounting hole is passed to at least part of pine line thimble.

Further, be provided with the first through hole that corresponds with the first axis body on the loose line board, the first axis body at least partly pass first through hole in order to install the loose line board on the installation axle.

Further, a second through hole corresponding to the second shaft body is formed in the thread loosening plate, and at least part of the second shaft body penetrates through the second through hole to install the thread loosening plate on the installation shaft.

Further, a supporting beam is arranged between the first through hole and the second through hole, two ends of the supporting beam are connected with the thread loosening plate, at least part of the supporting beam is located in the accommodating space, the ejection end face of the thread loosening thimble is abutted against the supporting beam, and the thread loosening thimble moves by pushing the supporting beam to push the thread loosening plate.

Further, the thread releasing device further comprises: the knob is sleeved on the first shaft body and the second shaft body; and the pressing spring is positioned between the knob and the thread loosening plate, and when the thread loosening action is completed, the elastic restoring force of the pressing spring pushes the thread loosening plate to move towards the direction of the thread clamping device so as to clamp the sewing thread.

Further, the thread releasing device further comprises: the tightening piece is sleeved on the mounting shaft and attached to the knob, and one end, far away from the wire loosening plate, of the compression spring is abutted to the tightening piece.

According to the utility model discloses a further aspect provides a sewing machine, including thread take-off and anti-bird's nest device, when anti-bird's nest device carried out the action of pressing from both sides the line, thread take-off was carried out in step and is taken off the line action, and thread take-off is foretell thread take-off.

Use the technical scheme of the utility model, the thread take-up device includes thread take-up and loose line subassembly, the thread take-up install in the side of thread clamp and with the thread tension piece butt of thread clamp, the thread take-up subassembly includes the thread take-up thimble, the ejecting terminal surface of thread take-up thimble is relative with the thread take-up, the direction motion of thread clamp is kept away from in order to promote the thread take-up orientation to the at least part of thread take-up thimble for the movably setting of thread take-up, in order to loosen the line, need not external routing device and loosen the line, the installation space of sewing machine has been saved, and compress tightly or release thread clamp through the thread take-up, so that the thread clamp realizes thread take-up or thread loosening action, has avoided external thread take-up mechanism to collude disconnected condition with the sewing thread easily, and the utility model provides a thread take-up device simple structure and be convenient for the installation, has.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a thread slacking off device according to the present invention;

fig. 2 shows a schematic structural view of an embodiment of the sewing machine according to the present invention; and

fig. 3 shows a schematic structural diagram of an embodiment of the thread loosening plate according to the present invention.

Wherein the figures include the following reference numerals:

10. loosening the thread plate; 101. a first through hole; 102. a second through hole; 103. a support beam;

20. a wire clamping device; 21. a wire clamping sheet;

30. a thread releasing assembly; 31. a thread releasing thimble; 301. an operation slot; 32. a magnetic member;

40. installing a shaft; 41. an installation part; 410. mounting holes; 411. a first shaft body; 412. a second shaft body; 413. an accommodating space;

50. a knob; 60. a compression spring; 70. screwing the sheet; 80. prevent bird's nest device.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides a thread releasing device please refer to fig. 1 to 3 for compress tightly or release thread gripper 20, so that thread gripper 20 realizes the thread clamping or the action of loosing the thread, and the thread releasing device includes: the loosening plate 10 is mounted on the side of the wire holder 20, and the loosening plate 10 is abutted with the wire holding sheet 21 of the wire holder 20; the thread loosening assembly 30 comprises a thread loosening thimble 31, the ejection end face of the thread loosening thimble 31 is opposite to the thread loosening plate 10, and at least part of the thread loosening thimble 31 is movably arranged relative to the thread loosening plate 10 to push the thread loosening plate 10 to move towards a direction far away from the thread clamp 20 so as to loosen threads.

According to the utility model, the thread releasing device comprises a thread releasing plate 10 and a thread releasing component 30, the thread releasing plate 10 is arranged at the side of the thread clamping device 20 and is abutted against a thread clamping sheet 21 of the thread clamping device 20, the thread releasing component 30 comprises a thread releasing thimble 31, the ejection end surface of the thread releasing thimble 31 is opposite to the thread releasing plate 10, at least part of the thread releasing thimble 31 is movably arranged relative to the thread releasing plate 10 to push the thread releasing plate 10 to move towards the direction far away from the thread clamping device 20, so as to loosen the thread without an external routing device, thereby saving the installation space of the sewing machine, and the thread clamping device 20 is pressed or released through the thread releasing plate 10, so that the thread clamping device 20 realizes the thread clamping or releasing action, the condition that an external thread releasing mechanism is easy to hook and break the sewing thread is avoided, and the utility model provides a thread take-off device simple structure and the installation of being convenient for have solved the complicated problem of thread take-off device structure among the prior art.

In a specific implementation, in order to facilitate pushing the thread releasing thimble 31 to move, the thread releasing assembly 30 further includes: the magnetic piece 32 and the magnetic piece 32 are matched with the thread loosening thimble 31, so that the thread loosening thimble 31 moves towards the direction of the thread loosening plate 10 under the action of the magnetic force of the magnetic piece 32 and is abutted against the thread loosening plate 10 to push the thread loosening plate 10.

The magnetic part 32 is an electromagnet, at least part of the thread releasing thimble 31 is positioned in a cavity of the electromagnet, the thread releasing thimble 31 is arranged in the cavity of the electromagnet, the installation space is saved, at least part of the installation shaft 40 can be arranged in the cavity, and the installation process and the installation position of the installation shaft 40 do not need to be independently arranged during installation, so that the installation efficiency is improved, and the structure of the thread releasing device is simplified.

Alternatively, the magnetic member 32 is a magnet block, and one end of the thread releasing thimble 31 far away from the thread releasing plate 10 is opposite to the magnet block so as to push the thread releasing thimble 31 to move by the magnetic force generated by the magnet block.

In order to prevent the thread releasing thimble 31 from being incapable of moving in the power failure, one end of the thread releasing thimble 31 far away from the thread releasing plate 10 is provided with an operating groove 301, so that the thread releasing thimble 31 is pushed to move towards the direction of the thread releasing plate 10 by pressing an operating piece matched with the operating groove 301, and the position of the thread releasing thimble 31 can be adjusted by the operating groove 301.

In order to facilitate the installation of the thread tension device 20 and the thread releasing plate 10, the thread releasing device further comprises: the installation shaft 40, the thread clamping device 20 and the thread loosening plate 10 are all sleeved on the installation shaft 40, an installation part 41 is arranged on the installation shaft 40, at least part of the thread loosening thimble 31 is installed in the installation part 41, and the thread loosening thimble 31 moves along the extension direction of the installation part 41 to push the thread loosening plate 10.

Specifically, the mounting portion 41 includes: the thread loosening device comprises an installation hole 410, a first shaft body 411 and a second shaft body 412, wherein the first shaft body 411 and the second shaft body 412 are arranged oppositely, an accommodating space 413 is formed between the first shaft body 411 and the second shaft body 412, the installation hole 410 is communicated with the accommodating space 413, at least part of the thread loosening thimble 31 penetrates through the installation hole 410 and then extends into the accommodating space 413, so that the thread loosening thimble 31 is located in the accommodating space 413, and the ejection end face of the thread loosening thimble 31 is abutted to the thread loosening plate 10.

In a specific implementation, as shown in fig. 3, the thread loosening plate 10 is provided with a first through hole 101 corresponding to the first shaft body 411, and at least a part of the first shaft body 411 passes through the first through hole 101 to mount the thread loosening plate 10 on the mounting shaft 40; the thread loosening plate 10 is provided with a second through hole 102 corresponding to the second shaft body 412, and at least a portion of the second shaft body 412 passes through the second through hole 102 to mount the thread loosening plate 10 on the mounting shaft 40.

A supporting beam 103 is arranged between the first through hole 101 and the second through hole 102, two ends of the supporting beam 103 are connected with the thread loosening plate 10, at least part of the supporting beam 103 is located in the accommodating space 413, the ejection end face of the thread loosening thimble 31 is abutted to the supporting beam 103, the thread loosening thimble 31 pushes the supporting beam 103 to push the thread loosening plate 10 to move, meanwhile, the supporting beam 103 is located in the accommodating space 413 and can also limit the thread loosening plate 10 in the circumferential direction, and the thread loosening plate 10 is prevented from rotating around the mounting shaft 40.

In the embodiment provided by the utility model, the thread releasing device still includes: the knob 50 is sleeved on the first shaft body 411 and the second shaft body 412; and a pressing spring 60, the pressing spring 60 being located between the knob 50 and the thread releasing plate 10, when the thread releasing action is completed, the thread releasing plate 10 being pushed by the elastic restoring force of the pressing spring 60 to move toward the thread clamp 20 to clamp the sewing thread.

In order to increase the contact area between the end surface of the pressing spring 60 and the knob 50, the thread releasing device further includes: the screwing piece 70 is sleeved on the mounting shaft 40, the screwing piece 70 is attached to the knob 50, and one end of the compression spring 60, which is far away from the wire loosening plate 10, is abutted to the screwing piece 70.

The utility model also provides a sewing machine, including thread slacking device and anti-bird nest device 80, when anti-bird nest device 80 carried out the action of pressing from both sides the line, thread slacking device carried out the action of slacking in step, and thread slacking device is the thread slacking device of above-mentioned embodiment.

When a sewing machine starts to sew or is about to finish sewing, the bird nest prevention device 80 is needed to prevent a sewing thread from being tangled and generating bird nests, so the sewing thread is often prevented from generating bird nests by arranging the bird nest prevention device 80, but when a thread cutting mechanism of the sewing machine lifts a needle to a position away from a knife edge in the bird nest prevention device 80 in the thread cutting process, a thread clamping knife in the bird nest prevention device 80 extends to clamp the sewing thread and cut the sewing thread at a suction opening, the bird nest prevention device 80 clamps the sewing thread in the thread cutting process, but a thread take-up lever is moved upwards to supply the thread from the outside, so that the sewing thread is prevented from being separated or broken at the thread clamping knife, therefore, the thread clamping device 20 loosens the sewing thread through the thread loosening device, the tension on the sewing thread is damaged, and the external sewing thread is taken up by the thread take-up lever without pressure.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

thread take-up device, including thread take-up 10 and thread take-up subassembly 30, thread take-up 10 install in the side of thread take-up 20 and with the thread take-up 21 butt of thread take-up 20, thread take-up subassembly 30 includes thread take-up thimble 31, the ejecting terminal surface of thread take-up thimble 31 is relative with thread take-up 10, the at least part of thread take-up thimble 31 is for the movably setting of thread take-up 10 orientation motion of keeping away from thread take-up 20 of promotion, in order to loosen the thread, need not external routing device and loosen the thread, the installation space of sewing machine has been saved, and compress tightly or release thread take-up 20 through thread take-up 10, so that thread take-up 20 realizes the line take-up or the action of loosing, avoided external thread take-up mechanism to collude the disconnected condition with the sewing thread easily, and the utility model provides a thread take-up device simple structure and be convenient for the installation, the complicated problem of.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A thread releasing device for pressing or releasing a thread gripper (20) to enable the thread gripper (20) to perform a thread gripping or releasing action, characterized in that it comprises:

the loosening plate (10) is mounted on the side of the wire clamping device (20) and is abutted against a wire clamping sheet (21) of the wire clamping device (20);

the thread loosening assembly (30) comprises a thread loosening thimble (31), the ejection end face of the thread loosening thimble (31) is opposite to the thread loosening plate (10), at least part of the thread loosening thimble (31) is movably arranged relative to the thread loosening plate (10) to push the thread loosening plate (10) to move towards the direction far away from the thread clamp (20) so as to loosen threads.

2. The thread slacking off device of claim 1, wherein said thread slacking off assembly (30) further comprises:

magnetic part (32), magnetic part (32) with loose line thimble (31) cooperatees, so that loose line thimble (31) is in the magnetic force of magnetic part (32) acts on down the orientation motion of loose line board (10) and with loose line board (10) butt is in order to promote loose line board (10).

3. The thread releasing device according to claim 2, wherein the magnetic member (32) is an electromagnet, and at least a portion of the thread releasing thimble (31) is located in a cavity of the electromagnet.

4. The thread releasing device according to claim 2, wherein the magnetic member (32) is a magnet block, and an end of the thread releasing pin (31) away from the thread releasing plate (10) is opposite to the magnet block so as to push the thread releasing pin (31) to move by a magnetic force generated by the magnet block.

5. The thread releasing device according to claim 1, characterized in that an end of the thread releasing thimble (31) far away from the thread releasing plate (10) is provided with an operating groove (301) so as to push the thread releasing thimble (31) to move towards the direction of the thread releasing plate (10) by pressing an operating member matched with the operating groove (301).

6. The thread slacking off device of claim 1, further comprising:

installation axle (40), thread tension ware (20) with loose line board (10) are all established the cover and are established on installation axle (40), be equipped with installation department (41) on installation axle (40), the at least part of loose line thimble (31) is installed in installation department (41), loose line thimble (31) are followed the extending direction of installation department (41) removes in order to promote loose line board (10).

7. The thread slacking off device according to claim 6, wherein said mounting portion (41) comprises:

a mounting hole (410);

the thread releasing thimble comprises a first shaft body (411) and a second shaft body (412), wherein the first shaft body (411) and the second shaft body (412) are arranged oppositely, an accommodating space (413) is formed between the first shaft body (411) and the second shaft body (412), the mounting hole (410) is communicated with the accommodating space (413), and at least part of the thread releasing thimble (31) penetrates through the mounting hole (410) and then extends into the accommodating space (413).

8. The thread slacking device according to claim 7, characterized in that said thread slacking off plate (10) is provided with a first through hole (101) corresponding to said first shaft body (411), at least a portion of said first shaft body (411) passing through said first through hole (101) to mount said thread slacking off plate (10) on said mounting shaft (40).

9. The thread slacking device according to claim 8, wherein a second through hole (102) corresponding to the second shaft body (412) is provided on the thread slacking plate (10), and at least a portion of the second shaft body (412) passes through the second through hole (102) to mount the thread slacking plate (10) on the mounting shaft (40).

10. The thread slacking device according to claim 9, wherein a support beam (103) is provided between the first passing hole (101) and the second passing hole (102), both ends of the support beam (103) are connected to the thread slacking plate (10), at least a part of the support beam (103) is located in the accommodating space (413), an ejecting end surface of the thread slacking thimble (31) abuts against the support beam (103), and the thread slacking thimble (31) pushes the thread slacking plate (10) to move by pushing the support beam (103).

11. The thread slacking off device of claim 10, further comprising:

the knob (50), the knob (50) is sleeved on the first shaft body (411) and the second shaft body (412);

the pressing spring (60) is positioned between the knob (50) and the thread loosening plate (10), and when the thread loosening action is finished, the thread loosening plate (10) is pushed to move towards the direction of the thread clamping device (20) by the elastic restoring force of the pressing spring (60) to clamp the sewing thread.

12. The thread slacking off device of claim 11, further comprising:

screwing sheet (70), screwing sheet (70) cover is established installation axle (40) go up and with knob (50) laminating, pressure spring (60) are kept away from the one end of pine line board (10) with screwing sheet (70) butt.

13. A sewing machine comprising a thread slacking off device and a bird's nest prevention device (80), which are synchronized to perform a thread slacking off action when the bird's nest prevention device (80) performs a thread pinching action, characterized in that the thread slacking off device is the thread slacking off device of any one of claims 1 to 12.