CN212895349U - Thread cutting device of sewing machine - Google Patents
Thread cutting device of sewing machine Download PDFInfo
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- CN212895349U CN212895349U CN202021592495.9U CN202021592495U CN212895349U CN 212895349 U CN212895349 U CN 212895349U CN 202021592495 U CN202021592495 U CN 202021592495U CN 212895349 U CN212895349 U CN 212895349U
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Abstract
The utility model relates to a sewing machine's wire cutting device, the package rubbing board body, install collude line sword, connection on the plate body collude line sword the driving piece, install collude line sword the line sword of cutting out and press from both sides the line shell fragment, the driving piece is used for the drive collude line arbor and move to the removal, cut out the line sword with press from both sides the line shell fragment and install respectively collude the relative both sides of line sword, the outermost terminal surface of pressing from both sides the line shell fragment is the inclined plane, the inclined plane with the angle that the axial motion orbit of colluding the line sword formed is the acute angle. The utility model discloses a be provided with the plate body, collude line sword, driving piece, wire cutter and press from both sides line shell fragment, will press from both sides line shell fragment and collude the axial motion orbit formation acute angle of line sword for collude line sword grab the line ability better, avoid the line to run the position.
Description
Technical Field
The utility model relates to a cloth processing equipment technical field especially relates to a sewing machine's wire cutting device.
Background
Multi-needle sewing machines are widely used at present, and are used in families or factories, while most of the multi-needle sewing machines are used for sewing by carrying a plurality of needles on a needle plate of the sewing machine, and a thread hooking knife is arranged below the needle plate and used for hooking the needles, when the sewing is finished, the threads need to be cut off once and then are occluded to continue the sewing machine. According to the traditional technology, one side of the thread hooking knife is provided with the thread clamping elastic sheet, and the motion tracks of the thread clamping elastic sheet and the thread hooking knife are vertically arranged, so that a thread is easy to move, and the thread grabbing capacity of the thread hooking knife is poor.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a thread cutting device of a sewing machine for solving the above-mentioned conventional problems by aiming at the problems existing in the conventional art, wherein the movement tracks of the thread clamping elastic sheet and the thread hooking knife are not vertically arranged but are at an included angle, so that the thread catching capability of the thread hooking knife is better, and the thread is prevented from running.
In order to realize the utility model discloses a purpose, the utility model discloses a following technical scheme:
the utility model provides a sewing machine's wire cutting device, includes the plate body, installs collude line sword, connection on the plate body collude line sword the driving piece, install collude line sword cut off line sword and the shell fragment of pressing from both sides of line sword, the driving piece is used for the drive collude the axial displacement of line sword, cut off line sword with the shell fragment of pressing from both sides is installed respectively collude the relative both sides of line sword, the outermost terminal surface of shell fragment of pressing from both sides is the inclined plane, the inclined plane with the angle that the axial motion orbit of colluding the line sword formed is the acute angle.
In one embodiment, the inclined surface forms an angle of 10-80 degrees with the axial motion track of the thread hooking knife.
In one embodiment, the inclined surface forms an angle ranging from 40 degrees to 80 degrees with the axial motion track of the thread hooking knife.
In one embodiment, the projection of the inclined surface on the thread hooking knife is not coincident with the projection of the thread cutting knife on the thread hooking knife.
In one embodiment, the angle formed by the outermost end surface of the thread cutting knife and the axial motion track of the thread hooking knife is an obtuse angle.
In one embodiment, the angle formed by the outermost end surface of the thread cutting knife and the axial motion track of the thread hooking knife ranges from 120 degrees to 160 degrees.
In one embodiment, the wire clamping elastic sheet comprises a fixing part, an elastic part and a connecting part for connecting the fixing part and the elastic part, the fixing part is fixed on the wire hooking knife, and one end of the elastic part close to the connecting part is inclined towards one end far away from the connecting part.
In one embodiment, the angle formed by the extension line of the elastic part and the thread hooking knife ranges from 3 degrees to 15 degrees.
In one embodiment, the thread cutting device of the sewing machine further comprises a limiting elastic sheet, and the limiting elastic sheet is located on one side, away from the thread hooking knife, of the thread clamping elastic sheet.
In one embodiment, the wire hooking cutter is provided with a first sliding cavity, a second sliding cavity and a third sliding cavity, wherein the second sliding cavity and the third sliding cavity are positioned on two opposite sides of the first sliding cavity, the first sliding cavity is in sliding connection with the driving piece, an upper positioning piece is in sliding connection with the second sliding cavity, a lower positioning piece is in sliding connection with the third sliding cavity, and the upper positioning piece and the lower positioning piece are matched with the driving piece to drive the wire hooking cutter to move axially.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a be provided with the plate body, collude line sword, driving piece, wire cutter and press from both sides line shell fragment, will press from both sides line shell fragment and collude the axial motion orbit formation acute angle of line sword for collude line sword grab the line ability better, avoid the line to run the position.
Drawings
Fig. 1 is a schematic structural view of a thread cutting device of a sewing machine according to a preferred embodiment of the present invention;
FIG. 2 is a top view of the thread cutting device of the sewing machine shown in FIG. 1;
FIG. 3 is a left side view of the thread cutting device of the sewing machine shown in FIG. 2;
FIG. 4 is an enlarged view of FIG. 2 at A;
fig. 5 is an enlarged view of fig. 3 at B.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 5, in order to implement the present invention, a thread cutting device of a sewing machine according to a preferred embodiment of the present invention is disposed under a needle plate of a multi-needle sewing machine mechanism, and includes a plate body 10, a thread hooking knife 20 mounted on the plate body 10, and a driving member 30 connected to the thread hooking knife 20, and a thread cutting knife 40 mounted on the thread hooking knife 20, and a thread clamping elastic piece 50, wherein the driving member 30 is used for driving the thread hooking knife 20 to move axially, the thread cutting knife 40 and the thread clamping elastic piece 50 are respectively mounted on opposite sides of the thread hooking knife 20, an outermost end surface of the thread clamping elastic piece 50 is an inclined surface 51, and an angle formed by the inclined surface 51 and an axial movement track of the thread hooking knife 20 is an acute angle.
The wire cutting device forms an acute angle between the axial movement tracks of the wire clamping elastic sheet 50 and the wire hooking knife 20, so that the movement tracks of the wire clamping elastic sheet 50 and the wire hooking knife 20 are not vertically arranged, the wire grabbing capacity of the wire hooking knife 20 is better, and the wire deviation is avoided.
In one embodiment, the inclined surface 51 forms an angle in the range of 10-80 ° with the axial movement track of the thread hooking cutter 20. Preferably, the angle formed by the inclined surface 51 and the axial motion track of the thread hooking knife 20 is in the range of 40-80 degrees, so that the thread hooking knife 20 has better thread grabbing capability.
In another embodiment, the projection of the inclined surface 51 on the thread hooking knife 20 is not coincident with the projection of the thread cutting knife 40 on the thread hooking knife 20, which means that the inclined surface 51 and the thread cutting knife 40 are not on the same horizontal plane, or the inclined surface 51 and the thread cutting knife 40 are arranged in a staggered manner.
Specifically, an angle formed by the outermost end surface of the thread cutter 40 and the axial movement track of the thread hooking cutter 20 is an obtuse angle, and the thread cutter 40 is matched with the thread clamping elastic sheet 50 to cut off the thread hooked back by the thread hooking cutter 20.
Preferably, the angle formed by the outermost end surface of the thread cutter 40 and the axial motion track of the thread hooking cutter 20 is 120-160 degrees.
In this embodiment, the wire clamping elastic sheet 50 includes a fixing portion 52, an elastic portion 53 and a connecting portion 54 connecting the fixing portion 52 and the elastic portion 53, the fixing portion 52 is fixed on the wire hooking knife 20, one end of the elastic portion 53 close to the connecting portion 54 is inclined toward the end far away from the connecting portion 54, so that the elastic portion 53 of the wire clamping elastic sheet 50 has elasticity, that is, the end close to the wire hooking knife 20 has elasticity, thereby preventing the wire clamping elastic sheet 50 from deviating from the wire hooking knife 20 due to the long working time.
In one embodiment, the angle formed by the extension line of the elastic part 53 and the thread hooking knife 20 is in the range of 3-15 °.
In another embodiment, the thread cutting device of the sewing machine further includes a limiting elastic sheet 60, and the limiting elastic sheet 60 is located on one side of the thread clamping elastic sheet 50 far away from the thread hooking knife 20 and is used for positioning the thread clamping elastic sheet 50. The shape of the limiting elastic sheet 60 is similar to that of the wire clamping elastic sheet 50.
In one embodiment, the thread hooking knife 20 is provided with a first sliding cavity 21, a second sliding cavity 22 and a third sliding cavity 23, the second sliding cavity 22 and the third sliding cavity 23 are located on two opposite sides of the first sliding cavity 21, the first sliding cavity 21 is slidably connected with the driving member 30, the second sliding cavity 22 is slidably connected with an upper positioning member 220, the third sliding cavity 23 is slidably connected with a lower positioning member 230, and the upper positioning member 220 and the lower positioning member 230 are matched with the driving member 30 to drive the thread hooking knife 20 to axially move.
The thread cutting device of the sewing machine has the working principle that: the driving member 30 is driven by an external driving mechanism to move up and down, the driving member 30 drives the thread hooking cutter 20 to move axially through the first sliding cavity 21, the thread hooking cutter 20 is not deviated due to the upper positioning member 220 and the lower positioning member 230, when the thread hooking cutter 20 moves back, a thread is hooked, and the thread is hooked on the thread clamping elastic sheet 50 and finally cut off by the thread cutting cutter 40, so that the thread hooking cutter moves back and forth.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a wire cutting device of sewing machine, its characterized in that, includes the plate body, installs collude line sword, connection on the plate body collude line sword the driving piece, install collude line sword cut out line sword and the shell fragment of pressing from both sides of line sword, the driving piece is used for the drive collude line arbor and move to one side, cut out line sword with the shell fragment of pressing from both sides is installed respectively collude the relative both sides of line sword, the outermost terminal surface of shell fragment of pressing from both sides is the inclined plane, the inclined plane with the angle that the axial motion orbit of colluding the line sword formed is the acute angle.
2. The thread cutting device of a sewing machine according to claim 1, wherein the inclined surface forms an angle in a range of 10 ° to 80 ° with an axial movement locus of the thread hooking knife.
3. The thread cutting device of a sewing machine according to claim 2, wherein the inclined surface forms an angle ranging from 40 ° to 80 ° with an axial movement locus of the thread hooking knife.
4. The thread cutting device of a sewing machine according to claim 1, wherein a projection of the inclined surface on the thread hooking knife does not coincide with a projection of the thread cutting knife on the thread hooking knife.
5. The thread cutting device of a sewing machine according to claim 4, wherein an angle formed by an outermost end surface of the thread cutting blade and an axial movement locus of the thread hooking blade is an obtuse angle.
6. The thread cutting device of a sewing machine according to claim 5, wherein an angle formed by an outermost end surface of the thread cutting blade and an axial movement locus of the thread hooking blade is in a range of 120 ° to 160 °.
7. The thread cutting device of a sewing machine according to claim 1, wherein the thread clamping elastic piece includes a fixing portion, an elastic portion and a connecting portion connecting the fixing portion and the elastic portion, the fixing portion is fixed on the thread hooking knife, and one end of the elastic portion close to the connecting portion is inclined toward one end away from the connecting portion.
8. The thread cutting device of a sewing machine according to claim 7, wherein an angle formed by an extension line of the elastic portion and the thread hooking knife is in a range of 3 ° to 15 °.
9. The thread cutting device of a sewing machine according to claim 7, further comprising a limiting elastic piece, wherein the limiting elastic piece is located on one side of the thread clamping elastic piece, which is far away from the thread hooking knife.
10. The thread cutting device of a sewing machine according to claim 1, wherein the thread hooking knife is provided with a first sliding cavity, a second sliding cavity and a third sliding cavity, the second sliding cavity and the third sliding cavity are located on two opposite sides of the first sliding cavity, the first sliding cavity is in sliding connection with the driving member, the second sliding cavity is in sliding connection with an upper positioning member, the third sliding cavity is in sliding connection with a lower positioning member, and the upper positioning member and the lower positioning member are matched with the driving member to drive the thread hooking knife to move axially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021592495.9U CN212895349U (en) | 2020-08-04 | 2020-08-04 | Thread cutting device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021592495.9U CN212895349U (en) | 2020-08-04 | 2020-08-04 | Thread cutting device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212895349U true CN212895349U (en) | 2021-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021592495.9U Active CN212895349U (en) | 2020-08-04 | 2020-08-04 | Thread cutting device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212895349U (en) |
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2020
- 2020-08-04 CN CN202021592495.9U patent/CN212895349U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 329, Fangyan Road, Camel Street, Zhenhai District, Ningbo City, Zhejiang Province, 315200 Patentee after: Ningbo Tongxin Sewing Machine Automation Co.,Ltd. Address before: 315000 No.66, Tongyuan North Road, Luotuo street, Zhenhai District, Ningbo City, Zhejiang Province Patentee before: Ningbo Zhenhai Tongxin Electromechanical Technology Co.,Ltd. |
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| CP03 | Change of name, title or address |