CN212388183U

CN212388183U - Thread trimming mechanism and sewing machine with same

Info

Publication number: CN212388183U
Application number: CN202021572656.8U
Authority: CN
Inventors: 易相瑞; 鲍增金; 郭超恒; 严海军; 黄贤木
Original assignee: Zhejiang Zoje Sewing Machine Co Ltd
Current assignee: Zhejiang Zoje Sewing Machine Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-01-22
Anticipated expiration: 2030-07-31

Abstract

The utility model provides a thread trimming mechanism and have its sewing machine, thread trimming mechanism for cut sewing machine's bottom line and upper thread, thread trimming mechanism includes: the first cutter is provided with a line hooking part, the first cutter can be rotatably arranged around a preset axis so as to hook a bottom line and an upper line through the line hooking part, and the line hooking part is provided with a first cutting surface which is horizontally arranged; the second cutter is at least partially positioned on the side of the first cutter and is provided with a second cutting surface which is horizontally arranged, so that the first cutting surface and the second cutting surface are contacted with each other to cut a bottom line and an upper line in the process that the first cutter rotates towards the direction close to the second cutter; the fixing seat, the second knife spare is installed on the fixing seat, and the second knife spare sets up for the position of fixing seat is adjustable to solve the problem that sewing machine's among the prior art production efficiency is low.

Description

Thread trimming mechanism and sewing machine with same

Technical Field

The utility model relates to the field of mechanical design, particularly, relate to a thread trimming mechanism and have its sewing machine.

Background

At present, in the working process of a sewing machine, the lengths of a bottom thread and an upper thread on a sewing material after a sewing thread is cut are determined by the distance from a needle hole to a cutting edge.

According to the existing thread cutting mechanism, the cutting edge of thread cutting is far away from the hole of the needle plate, so that the residual overlong of a bottom thread and an upper thread on a sewing material after thread cutting is caused, manual secondary thread cutting is required, the labor intensity of workers is increased, and the production efficiency of a sewing machine is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a thread trimming mechanism and have its sewing machine to solve the problem that sewing machine's among the prior art production efficiency is low.

In order to achieve the above object, according to an aspect of the present invention, there is provided a thread trimmer mechanism for trimming a bobbin thread and an upper thread of a sewing machine, the thread trimmer mechanism comprising: the first cutter is provided with a line hooking part, the first cutter can be rotatably arranged around a preset axis so as to hook a bottom line and an upper line through the line hooking part, and the line hooking part is provided with a first cutting surface which is horizontally arranged; the second cutter is at least partially positioned on the side of the first cutter and is provided with a second cutting surface which is horizontally arranged, so that the first cutting surface and the second cutting surface are contacted with each other to cut a bottom line and an upper line in the process that the first cutter rotates towards the direction close to the second cutter; the second knife piece is arranged on the fixed seat and adjustably arranged relative to the fixed seat.

Further, the thread trimming mechanism further comprises: the bobbin thread clamping assembly is at least partially installed on the fixing seat and provided with a clamping space so as to clamp the bobbin thread through the clamping space, and the size of the clamping space is adjustably set.

Further, the bobbin thread clamping assembly comprises: the clamping piece is installed on the fixing seat, a clamping space is formed between the clamping piece and the fixing seat, and the clamping piece is adjustably arranged relative to the position of the fixing seat so as to adjust the size of the clamping space.

Further, the first cutter comprises a cutter body which is rotatably arranged around a preset axis, and the line hooking part is arranged on the cutter body; collude line portion includes: the transition plate extends towards the direction far away from the knife body, and a preset interval is reserved between the transition plate and the knife body so as to form a first line passing part between the knife body and the transition plate.

Further, the thread hooking part further comprises: and the wire passing plate extends towards the direction far away from the knife body so as to form a second wire passing part between the wire passing plate and the transition plate and form a third wire passing part between the wire passing plate and the knife body.

Further, the thread hooking part further comprises: and the thread passing groove is arranged on the first cutting surface and is communicated with the second thread passing part and the third thread passing part, so that the upper thread passing through the second thread passing part and the bottom thread passing through the third thread passing part are pressed into the thread passing groove in the rotating process of the first cutter.

Furthermore, an opening is formed in the side wall of the wire passing groove, and at least part of the wire passing plate is connected with the knife body through the opening.

Further, the transition plate is provided with a transition end face, the transition end face is obliquely arranged relative to the horizontal plane, and the transition end face is connected with the first cutting face so that the transition end face is in contact with the second cutting piece in preference to the first cutting face in the moving process of the first cutting piece.

Further, the thread trimming mechanism further comprises: the adjusting plate is at least partially arranged on the fixing seat, and the second knife piece is arranged on the adjusting plate so as to drive the second knife piece to move through the adjusting plate and adjust the position of the second knife piece.

According to the utility model discloses an on the other hand provides a sewing machine, including thread trimming mechanism and faller, thread trimming mechanism's at least part sets up in the below of faller, and thread trimming mechanism is foretell thread trimming mechanism.

By applying the technical scheme of the utility model, the thread cutting mechanism is used for cutting the bottom thread and the upper thread of the sewing machine, wherein the thread cutting mechanism comprises a first cutter, a second cutter and a fixed seat, a thread hooking part is arranged on the first cutter, the first cutter can be rotationally arranged around a preset axis so as to hook the bottom thread and the upper thread through the thread hooking part, and the thread hooking part is provided with a first cutting surface which is horizontally arranged; at least part of the second cutter is positioned at the side of the first cutter, the second cutter is provided with a second cutting surface which is horizontally arranged, so that the first cutting surface and the second cutting surface are contacted with each other to cut a bottom line and an upper line in the process that the first cutter rotates towards the direction close to the second cutter; the second knife element is arranged on the fixed seat, and the position of the second knife element relative to the fixed seat is adjustably arranged. Set up to the level through the first cutting plane with first cutter and the second cutting plane of second cutter, can make between first cutter and the second cutter the cooperation inseparabler, the equal perpendicular and rotating shuttle of the cutting edge face of first cutter and the cutting edge face of second cutter rotates ground axis, thereby make the utility model provides a trimming mechanism can guarantee the sharp of trimming, is convenient for adjust the position of first cutter and second cutter, makes the shearing position of first cutter and second cutter be close to the faller more, makes the length of bottom line and facial suture on the sewing material shorter behind the trimming, need not to carry out the secondary trimming, has improved sewing machine's sewing efficiency.

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 sewing machine according to the present invention;

fig. 2 shows a schematic structural view of an embodiment of a thread trimming mechanism according to the present invention;

fig. 3 shows a schematic view of a first state of the thread trimming mechanism according to the invention;

figure 4 shows a schematic view of a second state of the thread trimming mechanism according to the invention;

fig. 5 shows an enlarged view of part a according to fig. 3; and

fig. 6 shows a schematic structural view of the first knife of the thread trimming mechanism according to the present invention.

Wherein the figures include the following reference numerals:

1. a first insert; 10. a hook line part; 2. a second insert; 3. a fixed seat; 4. a bobbin thread clamping assembly; 40. a clamping piece; 11. a cutter body; 101. a transition plate; 12. a first wire passing portion; 102. a wire passing plate; 13. a second wire passing portion; 14. a third wire passing part; 103. a wire passing groove; 5. an adjusting plate; 6. a needle plate; 7. a rotating shaft; 8. a rotating shuttle; 100. noodle; 200. a bottom line.

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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The utility model provides a thread trimming mechanism please refer to fig. 1 to 6 for cut sewing machine's bottom line and upper thread, thread trimming mechanism includes: the first knife element 1 is provided with a line hooking part 10, the first knife element 1 is rotatably arranged around a preset axis so as to hook a bottom line and an upper line through the line hooking part 10, and the line hooking part 10 is provided with a first cutting surface which is horizontally arranged; the second knife element 2, at least part of the second knife element 2 is positioned at the side of the first knife element 1, the second knife element 2 is provided with a second cutting surface which is horizontally arranged, so that the first cutting surface and the second cutting surface are contacted with each other to cut a bottom line and an upper line in the process that the first knife element 1 rotates towards the direction close to the second knife element 2; fixing base 3, second knife spare 2 are installed on fixing base 3, and second knife spare 2 sets up for fixing base 3's position is adjustable.

According to the utility model provides a thread cutting mechanism for cut the bottom line and the upper thread of sewing machine, wherein, thread cutting mechanism includes first cutter 1, second cutter 2 and fixing base 3, is provided with the department of colluding 10 on the first cutter 1, and first cutter 1 sets up around predetermined axis is rotatable to collude through the department of colluding 10 and get the bottom line and the upper thread, and the department of colluding 10 has the first cutting surface of horizontal setting; at least part of the second cutter 2 is positioned at the side of the first cutter 1, and the second cutter 2 is provided with a second cutting surface which is horizontally arranged, so that the first cutting surface and the second cutting surface are contacted with each other to cut a bottom line and an upper line in the process that the first cutter 1 rotates towards the direction close to the second cutter 2; the second knife 2 is mounted on the fixing base 3, and the position of the second knife 2 relative to the fixing base 3 is adjustably set. Set up to the level through the first cutting plane with first cutter 1 and the second cutting plane of second cutter 2, can make between first cutter 1 and the second cutter 2 the cooperation inseparabler, the equal perpendicular and rotating shuttle 8 ground axis of edge of first cutter 1 and second cutter 2, thereby make the utility model provides a trimming mechanism can guarantee the sharp of trimming, is convenient for adjust the position of first cutter 1 and second cutter 2, makes the shearing position of first cutter 1 and second cutter 2 be close to faller 6 more, makes the length of bottom line 200 and face line 100 on the sewing material behind the trimming shorter, need not to carry out the secondary trimming, has improved sewing machine's sewing efficiency.

Specifically, the thread trimming mechanism further includes: the bobbin thread clamping component 4, at least part of the bobbin thread clamping component 4 is installed on the fixing seat 3, the bobbin thread clamping component 4 is provided with a clamping space, so that the bobbin thread is clamped through the clamping space, and the size of the clamping space can be adjustably set. So as to adjust the clamping force to the bottom thread 200 and avoid the bottom thread 200 being cut off in advance due to overlarge tension.

In particular implementation, the thread gripping assembly 4 comprises: the clamping piece 40, the clamping piece 40 is installed on fixing base 3, constitutes the centre gripping space between clamping piece 40 and the fixing base 3, and the position of clamping piece 40 for fixing base 3 adjustably sets up to adjust the size in centre gripping space. The utility model provides an among the trimming mechanism, fixing base 3 sets up for the position of faller is adjustable to in the trimming position of adjusting first cutter 1 and second cutter 2.

In the embodiment provided by the present invention, the first insert 1 includes an insert body 11, the insert body 11 is rotatably disposed around a predetermined axis, and the hook portion 10 is disposed on the insert body 11; the hook portion 10 includes: and the transition plate 101, the transition plate 101 extends towards the direction far away from the knife body 11, and a preset interval is formed between the transition plate 101 and the knife body 11 so as to form a first transition part 12 between the knife body 11 and the transition plate 101. Wherein, the first thread passing part 12 is an arc-shaped groove to avoid cutting off the sewing thread.

In order to facilitate the hooking of the bobbin thread and the upper thread, the thread hooking portion 10 further includes: and the wire passing plate 102 extends towards the direction far away from the knife part body 11, so that a second wire passing part 13 is formed between the wire passing plate 102 and the transition plate 101, and a third wire passing part 14 is formed between the wire passing plate 102 and the knife part body 11. The wire passing surfaces of the second wire passing part 13 and the third wire passing part 14 are both arc-shaped surfaces.

In order to facilitate the spacing that the bottom line goes on in the trimming process, collude line portion 10 and still include: and the threading groove 103 is arranged on the first cutting surface, and the threading groove 103 is communicated with the second threading part 13 and the third threading part 14 so that the upper thread passing through the second threading part 13 and the bottom thread passing through the third threading part 14 are pressed into the threading groove 103 in the rotating process of the first cutter element 1. Wherein, the groove bottom surface of the wire passing groove 103 is parallel to the first cutting surface.

The side wall of the wire passing groove 103 is provided with an opening, and at least part of the wire passing plate 102 is connected with the knife body 11 through the opening. Set up like this and collude the line in-process, as shown in fig. 5, can make the bottom line pass the third through line portion through the opening, the facial line passes the second through line portion, sets up like this and to make first cutter 1 and second cutter 2 cooperation inseparabler, is directed against the utility model discloses a first cutting face is the improvement that the horizontal plane goes on to first cutter 1, preferably, the cutting edge of first cutter 1 is located the tip of wire casing 103.

The utility model provides an in the embodiment, cross cab apron 101 has the transition terminal surface, and the transition terminal surface sets up for the horizontal plane slope, and the transition terminal surface is connected with first cutting surface to in-process at first cutting member 1 removal makes the transition terminal surface be in priority to first cutting surface and the contact of second cutting member 2. It should be noted here that, in order to avoid the first insert 1 and the second insert 2 from colliding with each other or stopping each other during the rotation of the first insert 1, a transition end surface is provided on the first insert 1, so that the second insert 2 passes through the transition end surface and then comes into contact with the first cutting surface. Wherein, the first knife element 1 is arranged on the rotating shaft 7, and the rotating shaft 7 drives the first knife element 1 to rotate.

In order to facilitate the adjustment of the position of the second blade 2, the thread trimming mechanism further comprises: the adjusting plate 5, at least part of adjusting plate 5 is installed on fixing base 3, and second knife 2 is installed on adjusting plate 5 to drive second knife 2 through adjusting plate 5 and remove, with the position of adjusting second knife 2. Wherein, be provided with a plurality of first connecting holes on the fixing base 3, be provided with on the regulating plate 5 with a plurality of first connecting hole one-to-one second connecting hole, after first connecting hole and second connecting hole are passed in proper order to at least part of connecting piece, install second knife spare 2 on fixing base 3.

The utility model provides a sewing machine, including thread trimming mechanism and faller 6, thread trimming mechanism's at least part sets up in the below of faller 6, and thread trimming mechanism is the thread trimming mechanism of above-mentioned embodiment.

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

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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. The utility model provides a thread cutting mechanism for cut bottom line and the upper thread of sewing machine, its characterized in that, thread cutting mechanism includes:

the first knife piece (1), a line hooking part (10) is arranged on the first knife piece (1), the first knife piece (1) is rotatably arranged around a preset axis so as to hook a bottom line and an upper line through the line hooking part (10), and the line hooking part (10) is provided with a first cutting surface which is horizontally arranged;

a second knife (2), at least part of the second knife (2) is positioned at the side of the first knife (1), the second knife (2) is provided with a second cutting surface which is horizontally arranged, so that the first cutting surface and the second cutting surface are contacted with each other to cut the bottom line and the upper line in the process that the first knife (1) rotates towards the direction close to the second knife (2);

the second knife part (2) is mounted on the fixed seat (3), and the position of the second knife part (2) relative to the fixed seat (3) can be adjustably arranged.

2. The thread trimming mechanism of claim 1, further comprising:

the bobbin thread clamping component (4), at least part of the bobbin thread clamping component (4) is installed on the fixing seat (3), the bobbin thread clamping component (4) is provided with a clamping space so as to clamp the bobbin thread through the clamping space, and the size of the clamping space is adjustably set.

3. The thread trimming mechanism according to claim 2, wherein the bobbin thread gripping assembly (4) comprises:

the clamping piece (40), the clamping piece (40) is installed on the fixing base (3), a clamping space is formed between the clamping piece (40) and the fixing base (3), and the clamping piece (40) is adjustably arranged relative to the position of the fixing base (3) so as to adjust the size of the clamping space.

4. The thread trimming mechanism according to claim 1, wherein the first insert (1) comprises an insert body (11), the insert body (11) being rotatably arranged about a predetermined axis, the thread hooking portion (10) being arranged on the insert body (11); the hook portion (10) includes:

a transition plate (101), the transition plate (101) extending away from the insert body (11), the transition plate (101) and the insert body (11) having a predetermined spacing therebetween to form a first crossover portion (12) between the insert body (11) and the transition plate (101).

5. The thread trimming mechanism according to claim 4, wherein the thread hooking portion (10) further comprises:

the wire passing plate (102) extends towards the direction far away from the knife body (11) so as to form a second wire passing part (13) between the wire passing plate (102) and the transition plate (101) and form a third wire passing part (14) between the wire passing plate (102) and the knife body (11).

6. The thread trimming mechanism according to claim 5, wherein the thread hooking portion (10) further comprises:

the thread passing groove (103) is formed in the first cutting surface, the thread passing groove (103) is communicated with the second thread passing part (13) and the third thread passing part (14), and therefore in the rotating process of the first knife piece (1), a facial thread passing through the second thread passing part (13) and a bottom thread passing through the third thread passing part (14) are pressed into the thread passing groove (103).

7. The thread trimming mechanism according to claim 6, wherein the thread passing groove (103) has an opening on a side wall thereof, and at least a part of the thread passing plate (102) is connected with the knife body (11) through the opening.

8. The thread trimming mechanism according to claim 4, wherein the transition plate (101) has a transition face which is arranged obliquely with respect to the horizontal plane and which is connected to the first cutting face for bringing the transition face into contact with the second insert (2) in preference to the first cutting face during the movement of the first insert (1).

9. The thread trimming mechanism according to any one of claims 1 to 8, further comprising:

adjusting plate (5), the at least part of adjusting plate (5) is installed on fixing base (3), second knife spare (2) are installed on adjusting plate (5), in order to pass through adjusting plate (5) drive second knife spare (2) remove, in order to adjust the position of second knife spare (2).

10. A sewing machine comprising a thread trimming mechanism and a needle board (6), at least part of the thread trimming mechanism being arranged below the needle board (6), characterized in that the thread trimming mechanism is a thread trimming mechanism according to any one of claims 1 to 9.