CN216891502U - Thread releasing device of sewing machine - Google Patents
Thread releasing device of sewing machine Download PDFInfo
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- CN216891502U CN216891502U CN202220522775.5U CN202220522775U CN216891502U CN 216891502 U CN216891502 U CN 216891502U CN 202220522775 U CN202220522775 U CN 202220522775U CN 216891502 U CN216891502 U CN 216891502U
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Abstract
The utility model provides a thread releasing device of a sewing machine, and belongs to the technical field of sewing machines. The thread releasing device solves the technical problems that an existing thread releasing device of a sewing machine is complex in structure, inconvenient to assemble and the like. The thread releasing device comprises a swinging plate and a swinging seat, wherein the swinging seat is fixed on a thread clamping device or a machine shell of a sewing machine, a shaft position screw is fixedly arranged on the side surface of the swinging seat, a strip-shaped hole corresponding to the shaft position screw is formed in the swinging plate, the shaft position screw penetrates through the strip-shaped hole, and the swinging plate can reciprocate on the shaft position screw along the length direction of the strip-shaped hole; a driving piece for driving the swinging plate to move is fixedly arranged on the swinging seat; one side of the swing plate is provided with a toggle strip which protrudes and extends outwards, and the toggle strip is provided with an inclined surface. The thread releasing device is simple and stable, has few parts and convenient installation, only one installation surface is needed, and the occupied space is small: the number of mounting surfaces is large, requirements on a driving piece are low, and the overall cost is low; the maintenance is convenient; but also more beautiful.
Description
Technical Field
The utility model belongs to the technical field of sewing machines, and relates to a thread releasing device of a sewing machine.
Background
A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material. The sewing machine is generally provided with a thread clamping device, and the thread clamping device is used for clamping a thread when the sewing machine works so that the thread has proper tightness; when the sewing is finished and the thread is automatically cut, the thread clamping device cannot be automatically loosened, and a thread loosening device is required to be arranged to control the automatic loosening of the thread clamping device; the thread needs to be loosened when the presser foot is lifted. The time and state of the thread loosening process affect not only the shearing quality, but also the labor intensity of operators.
Chinese patent (grant publication No. CN 202007317U; grant publication No. 2011-10-12) discloses a pneumatic thread releasing device of a overedger: the device comprises a thread releasing jack catch inserted into the side surface of each facial suture pressing plate, a micro piston cylinder mechanism is fixedly arranged on the overedger shell near the facial suture pressing plate, the piston shaft of the micro piston cylinder mechanism is vertical to the rotating shaft of the facial suture pressing plate, the piston stroke is 5-10mm, the air inlet hole of the cylinder is communicated with a compressed air source and is controlled by an electromagnetic pneumatic control valve; the jack catch is fixedly arranged on the piston shaft and moves axially along with the push of the piston to release the upper thread jack catch. When the electromagnetic pneumatic control valve obtains a required thread loosening instruction sent by the control system, the air inlet valve is immediately opened, compressed air enters the cylinder to move the piston, and the clamping jaw fixedly arranged on the piston shaft pushes the upper thread tension plate to move along with the movement of the piston, so that the upper thread is in a loose state and is convenient to cut.
The thread releasing device in the above document is complicated to install and occupies a large space because it is composed of a plurality of parts: the number of mounting surfaces is required, namely, the number of processing surfaces is large; the required air cylinder needs large force and is high in cost; the overall maintenance is inconvenient.
Disclosure of Invention
The utility model provides a thread releasing device of a sewing machine according to the problems in the prior art, and the technical problems to be solved by the utility model are as follows: how to provide a compact, low-cost thread releasing device.
The purpose of the utility model can be realized by the following technical scheme:
the thread loosening device of the sewing machine comprises a swinging plate and a swinging seat, and is characterized in that the swinging seat is fixed on a thread clamp or a machine shell of the sewing machine, a shaft position screw is fixedly arranged on the side surface of the swinging seat, a strip-shaped hole corresponding to the shaft position screw is formed in the swinging plate, the shaft position screw penetrates through the strip-shaped hole, and the swinging plate can reciprocate on the shaft position screw along the length direction of the strip-shaped hole; a driving piece for driving the swinging plate to move is fixedly arranged on the swinging seat; one side of the swinging plate is provided with a poking strip which protrudes and extends outwards, and the poking strip is provided with an inclined surface.
The working principle is as follows: the thread clamping device on the sewing machine clamps the thread when the sewing machine works, so that the thread has proper tightness; when the thread is automatically cut before sewing is started, or after the sewing is finished, or when the presser foot is lifted, the thread clamping sheet on the thread clamping device needs to loosen the thread. The swing seat is fixed on a mounting surface, generally a shell, through a wire clamp. The output shaft of the driving piece pushes the swing plate to move, the inclined plane of the swing plate is inserted into the wire clamp to realize wire loosening, the output shaft of the driving piece drives the swing plate to reset, or the swing plate is reset through resetting, and the wire clamp finishes wire loosening.
In the promotion and the reset process of drive swing board among this technical scheme, the axis position screw passes the strip hole of swing board and fixes on swing seat, and swing board moves along the length direction in strip hole, and the length direction in strip hole is parallel with the drive direction of driving piece, through the motion of axis position screw restriction swing board other directions, prevents that swing board from moving. This thread releasing device is simple stable, and spare part is few, simple to operate, and the installation face only needs one, and occupation space is little: the number of mounting surfaces is large, requirements on a driving piece are low, and the overall cost is low; and the maintenance is convenient. But also more beautiful.
In the thread releasing device of the sewing machine, the number of the shaft position screws is two, the shaft position screws are screwed on the side surface of the swinging seat at intervals, and the two strip-shaped holes in the swinging plate are arranged in one-to-one correspondence with the shaft position screws. Therefore, the limit of the swing plate is more reliable, and the swing plate moves more smoothly.
In the thread releasing device of the sewing machine, the number of the poking strips is two and the poking strips are arranged at intervals. Thus, the wire clamping device can be applied to a group of wire clamping structures with a plurality of wire clamping sheets.
In the thread releasing device of the sewing machine, one side of the swing seat is provided with two connecting plates which protrude outwards and extend, the two connecting plates are arranged side by side at intervals, and the end parts of the connecting plates are provided with waist-shaped holes for adjusting the installation positions of the swing seat. The wire clamping device can be used for wire clamps with various center distances by adjusting the installation position of the swinging seat.
In the thread loosening device of the sewing machine, the swing seat is provided with a first mounting plate formed after bending, the first mounting plate is provided with a first mounting hole, the driving piece is fixedly connected to the first mounting plate through a first locking nut, and an output shaft of the driving piece penetrates through the first mounting hole; the swing plate is provided with a second mounting plate formed after bending, the second mounting plate is provided with a second mounting hole, and the output shaft of the driving piece penetrates through the second mounting hole and is fixedly connected to the second mounting plate through a second locking nut.
The swing plate and the swing seat are provided with bending angles, so that the threading and the threading are facilitated.
In the thread releasing device of the sewing machine, the driving member is a cylinder, a hydraulic cylinder or an electromagnet; or connected to a driving source by a wire for driving.
In the thread releasing device of the sewing machine, a return spring is further arranged between the swinging seat and the swinging plate. The reset spring can be a tension spring, the end part of the swing plate is provided with a spring hook, a pin is arranged on the swing seat, and two ends of the swing seat are respectively connected to the spring hook and the pin to reset the swing plate.
The driving piece in the technical scheme is preferably an air cylinder, and preferably, the swinging seat and the swinging plate are provided with return springs for return in one-way driving and auxiliary return in two-way driving. The working principle is the same when the one-way driving piece is selected, but the return spring is needed to be used for returning.
Compared with the prior art, the thread releasing device is simple and stable, has few parts and convenient installation, only one mounting surface is needed, and the occupied space is small: the number of mounting surfaces is large, requirements on a driving piece are low, and the overall cost is low; the maintenance is convenient; but also more beautiful.
Drawings
Fig. 1 is a schematic perspective view of the thread releasing device.
Fig. 2 is a schematic diagram I of the explosive structure of the thread releasing device.
Fig. 3 is a schematic diagram of the explosive structure of the thread releasing device II.
In the figure, 1, a swing plate; 11. a strip-shaped hole; 12. the bar is stirred; 12a, an inclined surface; 13. a second mounting plate; 13a and a second mounting hole; 2. a swing seat; 21. a connecting plate; 21a, a kidney-shaped hole; 22. a first mounting plate; 22a, a first mounting hole; 3. an axial screw; 4. a drive member; 5. locking the first nut; 6. locking a second nut; 7. a return spring.
Detailed Description
The following is a detailed description of the present invention and is further described with reference to the accompanying drawings, but the present invention is not limited to these examples.
The thread clamping device on the sewing machine clamps the thread when the sewing machine works, so that the thread has proper tightness; when the thread is automatically cut before sewing is started, or after the sewing is finished, or when the presser foot is lifted, the thread clamping sheet on the thread clamping device needs to loosen the thread. As shown in fig. 1, 2 and 3, the thread releasing device of the sewing machine comprises a swinging plate 1 and a swinging seat 2, wherein the swinging seat 2 is fixed on a thread clamping device or a machine shell of the sewing machine, a shaft position screw 3 is fixedly arranged on the side surface of the swinging seat 2, a strip-shaped hole 11 corresponding to the shaft position screw 3 is formed in the swinging plate 1, the shaft position screw 3 passes through the strip-shaped hole 11, and the swinging plate 1 can reciprocate on the shaft position screw 3 along the length direction of the strip-shaped hole 11; a driving piece 4 for driving the swinging plate 1 to move is fixedly arranged on the swinging seat 2; the swing plate 1 has a toggle bar 12 protruding outward from one side thereof, and the toggle bar 12 has an inclined surface 12 a.
The swing seat 2 is fixed on a mounting surface, generally a shell, through a wire clamp. The output shaft of the driving piece 4 pushes the swing plate 1 to move, the inclined surface 12a of the swing plate 1 is inserted into the wire clamping device to realize wire loosening, the output shaft of the driving piece 4 drives the swing plate 1 to reset, or the swing plate 1 is reset through resetting, and the wire clamping device finishes the wire loosening. In the pushing and resetting process of driving the swing plate 1 in the embodiment, the shaft position screw 3 penetrates through the strip-shaped hole 11 of the swing plate 1 and is fixed on the swing seat 2, the swing plate 1 moves along the length direction of the strip-shaped hole 11, the length direction of the strip-shaped hole 11 is parallel to the driving direction of the driving piece 4, and the shaft position screw 3 limits the movement of the swing plate 1 in other directions to prevent the swing plate 1 from running. This thread releasing device is simple stable, and spare part is few, simple to operate, and the installation face only needs one, and occupation space is little: the number of mounting surfaces is large, the requirement on the driving piece 4 is low, and the overall cost is low; and the maintenance is convenient. But also more beautiful.
As shown in fig. 1, 2 and 3, the number of the axial screws 3 is two, and the two axial screws are screwed on the side surface of the swing seat 2 at intervals, and two strip-shaped holes 11 on the swing plate 1 are provided and are arranged in one-to-one correspondence with the axial screws 3; therefore, the limit of the swing plate 1 is more reliable, and the swing plate 1 moves more smoothly; the number of the toggle strips 12 is also two and the toggle strips are arranged at intervals; thus, the wire clamping device can be applied to a group of wire clamping structures with a plurality of wire clamping sheets. One side of swing seat 2 has two connecting plates 21 that outwards stand out and extend, and two connecting plates 21 set up at interval side by side, and waist type hole 21a that is used for adjusting swing seat 2 mounted position is seted up to the tip of connecting plate 21, through the mounted position of adjustment swing seat 2, can be used for the tension disc of multiple centre-to-centre spacing.
As shown in fig. 2 and 3, the swing seat 2 is provided with a first mounting plate 22 formed by bending, the first mounting plate 22 is provided with a first mounting hole 22a, the driving member 4 is fixedly connected to the first mounting plate 22 through a first locking nut 5, and an output shaft of the driving member 4 passes through the first mounting hole 22 a; the swing plate 1 is provided with a second mounting plate 13 formed after bending, the second mounting plate 13 is provided with a second mounting hole 13a, and an output shaft of the driving piece 4 penetrates through the second mounting hole 13a and is fixedly connected to the second mounting plate 13 through a second locking nut 6. The swing plate 1 and the swing seat 2 are provided with bending angles, so that the threading and the threading are facilitated.
In the embodiment, the driving part 4 is a cylinder, a hydraulic cylinder or an electromagnet; or connected to a driving source by a wire for driving.
Preferably, in the present embodiment, a return spring 7 is further provided between the swing seat 2 and the swing plate 1. This reset spring 7 can be the extension spring, and the tip of swing board 1 sets up the spring hanger, sets up the pin on the swing seat 2, and the both ends of swing seat 2 are connected respectively on spring hanger and pin, play the reset action to swing board 1. The return spring 7 arranged between the swing seat 2 and the swing plate 1 can be used for return in one-way driving and can also be used for auxiliary return in two-way driving. The principle of operation is the same when selecting the one-way driver 4, but the return spring 7 described above must be used for return.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (7)
1. The thread releasing device of the sewing machine comprises a swinging plate (1) and a swinging seat (2), and is characterized in that the swinging seat (2) is fixed on a thread clamp or a shell of the sewing machine, a shaft position screw (3) is fixedly arranged on the side surface of the swinging seat (2), a strip-shaped hole (11) corresponding to the shaft position screw (3) is formed in the swinging plate (1), the shaft position screw (3) penetrates through the strip-shaped hole (11), and the swinging plate (1) can reciprocate on the shaft position screw (3) along the length direction of the strip-shaped hole (11); a driving piece (4) for driving the swinging plate (1) to move is fixedly arranged on the swinging seat (2); one side of the swinging plate (1) is provided with a toggle strip (12) which protrudes and extends outwards, and the toggle strip (12) is provided with an inclined surface (12 a).
2. The thread releasing device of a sewing machine according to claim 1, characterized in that the number of the shaft screws (3) is two and the two shaft screws are screwed on the side surface of the swing seat (2) at intervals, and the two strip-shaped holes (11) on the swing plate (1) are arranged corresponding to the shaft screws (3) one by one.
3. The thread slackening device of a sewing machine according to claim 1 or 2, characterized in that the number of the striking bars (12) is two and spaced apart.
4. The thread slackening device of a sewing machine according to claim 1 or 2, characterized in that one side of the swing seat (2) is provided with two connecting plates (21) which protrude and extend outwards, the two connecting plates (21) are arranged side by side at intervals, and the end of the connecting plate (21) is provided with a waist-shaped hole (21a) for adjusting the installation position of the swing seat (2).
5. The thread releasing device of the sewing machine according to claim 1 or 2, wherein the swinging seat (2) is provided with a first mounting plate (22) formed after bending, the first mounting plate (22) is provided with a first mounting hole (22a), the driving member (4) is fixedly connected to the first mounting plate (22) through a first lock nut (5), and an output shaft of the driving member (4) penetrates through the first mounting hole (22 a); have mounting panel two (13) that form after buckling on swing board (1), mounting hole two (13a) have been seted up on mounting panel two (13), the output shaft of driving piece (4) passes mounting hole two (13a) and link firmly through lock nut two (6) on mounting panel two (13).
6. The thread slackening device of a sewing machine according to claim 1 or 2, characterized in that said driving member (4) is a pneumatic cylinder, a hydraulic cylinder, or an electromagnet; or connected to a driving source by a wire for driving.
7. The thread slacking off device of a sewing machine according to claim 1 or 2, characterized in that a return spring (7) is further provided between the oscillating seat (2) and the oscillating plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220522775.5U CN216891502U (en) | 2022-03-11 | 2022-03-11 | Thread releasing device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220522775.5U CN216891502U (en) | 2022-03-11 | 2022-03-11 | Thread releasing device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216891502U true CN216891502U (en) | 2022-07-05 |
Family
ID=82188589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220522775.5U Active CN216891502U (en) | 2022-03-11 | 2022-03-11 | Thread releasing device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216891502U (en) |
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2022
- 2022-03-11 CN CN202220522775.5U patent/CN216891502U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 317502 No.8 Jinxiu Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Meiji Technology Group Co.,Ltd. Address before: 317502 Zhongxiang Industrial Zone, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd. |
|
| CP03 | Change of name, title or address |