CN220079398U - Thread cutting mechanism for sewing machine - Google Patents
Thread cutting mechanism for sewing machine Download PDFInfo
- Publication number
- CN220079398U CN220079398U CN202320238773.8U CN202320238773U CN220079398U CN 220079398 U CN220079398 U CN 220079398U CN 202320238773 U CN202320238773 U CN 202320238773U CN 220079398 U CN220079398 U CN 220079398U
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- knife
- thread cutting
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- sewing machine
- hole
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- 238000009958 sewing Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model relates to a thread cutting mechanism for a sewing machine, which comprises an upper thread cutting knife, a lower thread cutting knife, a thread cutting driver, a fixing seat and a thread protecting knife assembly; the lower tangent knife is arranged opposite to the upper tangent knife; the upper tangent knife is in transmission connection with the tangent driver, and the tangent driver drives the upper tangent knife to move so as to enable the side surface of the upper tangent knife to be engaged with the side surface of the lower tangent knife to realize tangent; the lower thread cutting knife is arranged on the sewing machine through the fixing seat; the lower tangent line sword is installed on the fixing base through protecting the sword subassembly, protects the sword subassembly and includes cutter holder, telescopic link, protects blade holder, butt spare and elastic component, and lower tangent line sword is installed on the cutter holder, cutter holder and telescopic link fixed connection, telescopic link telescopically installs on protecting the blade holder, protects blade holder fixed connection fixing base, and the butt spare suit is outside the telescopic link, and the one end and the butt spare butt of elastic component, the other end and the butt of protecting the blade holder of elastic component. The utility model can effectively prolong the service life of the lower thread cutting knife and effectively improve the working stability of the thread cutting mechanism for the sewing machine.
Description
Technical Field
The utility model relates to the technical field of sewing machine equipment, in particular to a thread cutting mechanism for a sewing machine.
Background
The automatic sewing machine is provided with a thread cutting mechanism for automatically cutting threads. The cutting action of the cutting mechanism is completed by the cooperation of the fixed knife and the movable knife. In the prior art, the fixed knife and the movable knife are positioned at two sides of the needle, in the process of occlusion, the movement track of the movable knife is deviated due to mechanical vibration, and the position of the fixed knife is fixed, so that the movable knife and the fixed knife collide and are damaged, parts are required to be frequently replaced, and the production is influenced to a certain extent.
Disclosure of Invention
Based on the above, it is necessary to provide a thread cutting mechanism for a sewing machine, which aims at the problems that the existing moving knife is mechanically vibrated during the working process to cause the movement track of the moving knife to deviate, and the position of the fixed knife is fixed, so that the moving knife collides with the fixed knife to be damaged, and parts are required to be frequently replaced to cause certain influence on the production.
A thread cutting mechanism for a sewing machine, comprising:
a thread cutting knife is arranged;
the lower tangent knife is arranged opposite to the upper tangent knife;
the upper tangent knife is in transmission connection with the tangent driver, and the tangent driver drives the upper tangent knife to move so as to enable the side face of the upper tangent knife to be engaged with the side face of the lower tangent knife to realize tangent;
the lower thread cutting knife is arranged on the sewing machine through the fixing seat; and
the cutter protection assembly is arranged on the fixing base through the cutter protection assembly, the cutter protection assembly comprises a cutter holder, a telescopic rod, a cutter protection base, an abutting part and an elastic part, the cutter holder is fixedly connected with the telescopic rod, the telescopic rod is telescopically arranged on the cutter protection base, the cutter protection base is fixedly connected with the fixing base, the abutting part is sleeved outside the telescopic rod, one end of the elastic part is abutted to the abutting part, and the other end of the elastic part is abutted to the cutter protection base.
Above-mentioned tangent line mechanism for sewing machine through last tangent line sword, lower tangent line sword, tangent line driver, fixing base and protect the cooperation of sword subassembly and can effectively avoid going up the tangent line sword and take place the phenomenon emergence that the tiny deviation leads to going up tangent line sword and lower tangent line sword to collide and damage because of mechanical vibration in the course of the work to effectively prolong the life of lower tangent line sword, simultaneously, can make the side of going up the tangent line sword and the side moment butt of lower tangent line sword when tangent line, effectively improve the job stabilization nature of tangent line mechanism for sewing machine.
In one embodiment, the guard seat comprises a base part and two sleeving parts connected with the base part, and the two sleeving parts are arranged at two ends of the base part.
In one embodiment, the tool guard assembly further comprises an adjusting nut, a through hole is formed in the sleeve joint portion in the axial direction, threads are formed in the end portion, away from the tool holder, of the telescopic rod, and the end portion, away from the tool holder, of the telescopic rod penetrates through the through hole and is in threaded connection with the adjusting nut.
In one embodiment, the knife protecting assembly further comprises a sliding sleeve, wherein the sliding sleeve is fixedly arranged in the through hole in a penetrating mode, and the sliding sleeve is sleeved outside the telescopic rod.
In one embodiment, the abutting piece and the elastic piece are arranged between the two sleeved parts, and one end of the elastic piece, which is far away from the abutting piece, abuts against the sleeved part, which is close to the adjusting nut.
In one embodiment, the tool holder comprises a connecting plate and a tool holder, wherein the connecting plate is provided with a connecting hole, the telescopic rod penetrates through the connecting hole to be matched with the nut, the connecting plate is fixedly connected with the telescopic rod, the end part, far away from the telescopic rod, of the connecting plate is provided with a transverse adjusting hole, the tool holder and the lower tangent cutter are provided with perforations, and the lower tangent cutter and the tool holder are installed on the connecting plate through bolts penetrating through the perforations and the transverse adjusting hole to be matched with the nut.
In one embodiment, the thread cutting mechanism for a sewing machine further comprises a guide rod, the base portion is provided with a mounting hole, the connecting plate is provided with a guide hole, and the guide rod passes through the guide hole to be in threaded connection with the mounting hole.
In one embodiment, the fixing base is provided with a longitudinal adjustment hole, the base part is provided with a fixing hole, and the tool apron is connected with the fixing base through the nut after penetrating through the longitudinal adjustment hole and the fixing hole through a bolt.
In one embodiment, the abutment is a clip.
Drawings
FIG. 1 is an assembled structure view of a thread cutting mechanism for a sewing machine according to an embodiment of the present utility model;
fig. 2 is an exploded view of the thread cutting mechanism for the sewing machine shown in fig. 1.
The meaning of the reference numerals in the drawings are:
100-a thread cutting mechanism for a sewing machine;
10-feeding a wire cutter;
20-cutting a line;
30-fixing seats, 31-longitudinal adjusting holes;
40-knife protection components, 41-knife holders, 411-connecting plates, 412-knife holders, 413-transverse adjusting holes, 414-guide holes, 415-connecting holes, 42-knife holders, 421-base parts, 422-sleeving parts, 423-fixing holes, 424-through holes, 425-mounting holes, 43-telescopic rods, 431-clamping grooves, 44-adjusting nuts, 45-sliding sleeves, 46-abutting pieces and 47-elastic pieces;
50-guide bar.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 2, a thread cutting mechanism 100 for a sewing machine according to an embodiment of the present utility model includes an upper thread cutting blade 10, a lower thread cutting blade 20, a thread cutting driver, a fixing seat 30, and a cutter protecting assembly 40, wherein the upper thread cutting blade 10 and the lower thread cutting blade 20 are disposed up and down correspondingly, the thread cutting driver is mounted on the sewing machine, the upper thread cutting blade 10 is in transmission connection with the thread cutting driver, and the thread cutting driver drives the upper thread cutting blade 10 to move up and down so as to enable the side surface of the upper thread cutting blade 10 to be meshed with the side surface of the lower thread cutting blade 20 to achieve thread cutting. The fixed seat 30 is mounted on the sewing machine, and the lower thread cutting knife 20 is mounted on the fixed seat 30 through a knife protecting assembly 40.
Referring to fig. 1 and 2, the knife protecting assembly 40 includes a knife holder 41, a knife protecting seat 42, a telescopic rod 43, an adjusting nut 44, a sliding sleeve 45, a abutting piece 46 and an elastic piece 47, the knife holder 41 includes a connecting plate 411 and a knife seat 412, a connecting hole 415 is formed in the connecting plate 411, the telescopic rod 43 passes through the connecting hole 415 to be matched with the nut, the connecting plate 411 is fixedly connected with the telescopic rod 43, a transverse adjusting hole 413 is formed in the end portion, far away from the telescopic rod 43, of the connecting plate 411, the transverse adjusting hole 413 is formed in the left-right direction, perforations are formed in the knife seat 412 and the lower tangent knife 20, the knife seat 412 are assembled on the connecting plate 411 in a matched mode through bolts passing through the perforations and the transverse adjusting hole 413 and the nut, so that the position of the lower tangent knife 20 on the connecting plate 411 can be adjusted in the left-right direction according to actual conditions, the side face of the lower tangent knife 20 can be mutually meshed with the side face of the upper tangent knife 10, and the running stability of the tangent mechanism 100 for a sewing machine is effectively improved.
As shown in fig. 1 and 2, the guard holder 42 includes a base portion 421 and a socket portion 422 connected to the base portion 421, the fixing base 30 is provided with a longitudinal adjustment hole 31, the longitudinal adjustment hole 31 is disposed along a front-rear direction, the base portion 421 is provided with a fixing hole 423, the guard holder 42 passes through the longitudinal adjustment hole 31 and the fixing hole 423 through a bolt and then is engaged with a nut to be connected with the fixing base 30, so that a position of the guard holder 42 can be adjusted along the front-rear direction, thereby adjusting a position between the lower tangential knife 20 and the upper tangential knife 10.
As shown in fig. 1 and fig. 2, the number of the sleeving parts 422 is two, the sleeving parts 422 are respectively arranged at two ends of the base part 421, the sleeving parts 422 are axially provided with through holes 424, the ends of the telescopic rods 43, which are far away from the tool holder 41, are provided with threads, the ends of the telescopic rods 43, which are far away from the tool holder 41, pass through the through holes 424 and are in threaded connection with the adjusting nuts 44, so that the positions of the lower tangent knife 20 along the front-rear direction can be slightly adjusted through the adjusting nuts 44, and the position between the lower tangent knife 20 and the upper tangent knife 10 can be adjusted by a user more conveniently. The sliding sleeve 45 is fixedly arranged in the through hole 424 in a penetrating way, the sliding sleeve 45 is sleeved outside the telescopic rod 43, and the telescopic rod 43 is telescopically arranged on the tool guard holder 42 through the sliding sleeve 45.
As shown in fig. 1 and 2, the telescopic rod 43 is provided with a locking groove 431, and the abutment 46 is locked in the locking groove 431. The abutment 46 is a clip. The elastic member 47 is sleeved outside the telescopic rod 43, the abutting member 46 and the elastic member 47 are arranged between the two sleeved parts 422, one end of the elastic member 47 abuts against the abutting member 46, and the other end of the elastic member 47 abuts against the sleeved part 422 close to the adjusting nut 44. The elastic member 47 is a spring.
As shown in fig. 1 and 2, the thread cutting mechanism 100 for a sewing machine further includes a guide rod 50, the base portion 421 is provided with a mounting hole 425, the connection plate 411 is provided with a guide hole 414, and the guide rod 50 is screwed with the mounting hole 425 through the guide hole 414.
The thread cutting mechanism 100 for a sewing machine in this embodiment operates according to the following principle: before working, the tangent driver drives the upper tangent cutter 10 to move downwards to the lowest point, the side surface of the lower tangent cutter 20 is close to the side surface of the upper tangent cutter 10 through the cooperation of the longitudinal adjusting hole 31 and the fixing hole 423 and the cooperation of the transverse adjusting hole 413 and the connecting hole 415, and the side surface of the lower tangent cutter 20 is propped against the side surface of the upper tangent cutter 10 through the adjusting bolt; when the sewing machine is in operation, the upper thread cutting knife 10 is driven to move downwards by the thread cutting driver, when the upper thread cutting knife 10 is in contact with the lower thread cutting knife 20, the lower thread cutting knife 20 can move backwards under the action of the elastic piece 47 and the telescopic rod 43, the phenomenon that the upper thread cutting knife 10 and the lower thread cutting knife 20 are damaged due to the collision of the upper thread cutting knife 10 and the lower thread cutting knife 20 caused by the tiny deviation of mechanical vibration in the operation process can be effectively avoided, the service life of the lower thread cutting knife 20 is effectively prolonged, and meanwhile, the side face of the upper thread cutting knife 10 is enabled to be in contact with the side face of the lower thread cutting knife 20 at any time during thread cutting, and the working stability of the thread cutting mechanism 100 for the sewing machine is effectively improved.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (9)
1. A thread cutting mechanism for a sewing machine, comprising:
a thread cutting knife is arranged;
the lower tangent knife is arranged opposite to the upper tangent knife;
the upper tangent knife is in transmission connection with the tangent driver, and the tangent driver drives the upper tangent knife to move so as to enable the side face of the upper tangent knife to be engaged with the side face of the lower tangent knife to realize tangent;
the lower thread cutting knife is arranged on the sewing machine through the fixing seat; and
the cutter protection assembly is arranged on the fixing base through the cutter protection assembly, the cutter protection assembly comprises a cutter holder, a telescopic rod, a cutter protection base, an abutting part and an elastic part, the cutter holder is fixedly connected with the telescopic rod, the telescopic rod is telescopically arranged on the cutter protection base, the cutter protection base is fixedly connected with the fixing base, the abutting part is sleeved outside the telescopic rod, one end of the elastic part is abutted to the abutting part, and the other end of the elastic part is abutted to the cutter protection base.
2. The thread cutting mechanism for a sewing machine of claim 1, wherein the guard holder comprises a base portion and two socket portions connected to the base portion, the number of socket portions being two, the two socket portions being provided at both ends of the base portion.
3. The thread cutting mechanism for a sewing machine of claim 2, wherein the knife guard assembly further comprises an adjustment nut, a through hole is provided in an axial direction of the sleeve joint portion, a thread is provided at an end of the telescopic rod away from the holder, and the end of the telescopic rod away from the holder is threaded through the through hole and is connected with the adjustment nut.
4. The thread cutting mechanism for a sewing machine of claim 3, wherein the knife guard assembly further comprises a sliding sleeve fixedly disposed through the through hole, the sliding sleeve being disposed outside the telescoping rod.
5. The thread cutting mechanism for a sewing machine of claim 4, wherein the abutting member and the elastic member are provided between the two socket portions, and an end of the elastic member away from the abutting member abuts against the socket portion adjacent to the adjusting nut.
6. The thread cutting mechanism for a sewing machine according to claim 2, wherein the tool holder comprises a connecting plate and a tool holder, a connecting hole is formed in the connecting plate, the telescopic rod penetrates through the connecting hole to be matched with a nut, the connecting plate is fixedly connected with the telescopic rod, a transverse adjusting hole is formed in the end portion, far away from the telescopic rod, of the connecting plate, perforations are formed in the tool holder and the lower thread cutting tool, and the lower thread cutting tool and the tool holder penetrate through the perforations and the transverse adjusting hole to be matched with the nut through bolts to be mounted on the connecting plate.
7. The thread cutting mechanism for a sewing machine of claim 6, further comprising a guide bar, wherein the base portion is provided with a mounting hole, wherein the connecting plate is provided with a guide hole, and wherein the guide bar is screwed with the mounting hole through the guide hole.
8. The thread cutting mechanism for a sewing machine according to claim 2, wherein the fixing base is provided with a longitudinal adjustment hole, the base portion is provided with a fixing hole, and the guard holder is coupled to the fixing base by being engaged with a nut after passing through the longitudinal adjustment hole and the fixing hole by a bolt.
9. The thread cutting mechanism for a sewing machine of claim 1, wherein the abutment member is a yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320238773.8U CN220079398U (en) | 2023-02-17 | 2023-02-17 | Thread cutting mechanism for sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320238773.8U CN220079398U (en) | 2023-02-17 | 2023-02-17 | Thread cutting mechanism for sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220079398U true CN220079398U (en) | 2023-11-24 |
Family
ID=88830446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320238773.8U Active CN220079398U (en) | 2023-02-17 | 2023-02-17 | Thread cutting mechanism for sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220079398U (en) |
-
2023
- 2023-02-17 CN CN202320238773.8U patent/CN220079398U/en active Active
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