CN221544967U - Top arm driving device of sewing machine - Google Patents
Top arm driving device of sewing machine Download PDFInfo
- Publication number
- CN221544967U CN221544967U CN202420032105.4U CN202420032105U CN221544967U CN 221544967 U CN221544967 U CN 221544967U CN 202420032105 U CN202420032105 U CN 202420032105U CN 221544967 U CN221544967 U CN 221544967U
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- top arm
- driving
- fixed
- driving piece
- pin
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- 238000009958 sewing Methods 0.000 title claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 23
- 238000007906 compression Methods 0.000 claims abstract description 23
- 239000004744 fabric Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model provides a top arm driving device of a sewing machine, the driving device comprises a fixed seat, a telescopic motor, a driving piece and a compression spring. Wherein, the driving piece is fixed in the one end that the top arm kept away from the pay-off area, and the one end of driving piece sets up waist shape hole, and this waist shape hole is located in the fixing base. The telescopic motor is fixed on the machine base, and the telescopic motor is provided with a telescopic rod, a driving pin is fixed at the end part of the telescopic rod, and the driving pin penetrates through the kidney-shaped hole. In addition, the compression spring is connected with the driving piece and the connecting plate of the machine base, so that the elastic acting force of the compression spring forms a pulling force for lifting the driving piece, and the feeding belt at the other end of the top arm compresses the cloth downwards. When the feeding belt lifting device works, the telescopic rod of the telescopic motor is lifted to enable the driving pin to move in the kidney-shaped hole and drive the driving piece to act, so that the top arm is driven to swing, and lifting and pressing of the feeding belt at the other end of the top arm are realized. Compared with the mode of an air cylinder, the mode of adopting the telescopic motor to drive does not need to be provided with an air compressor, so that the use cost can be saved.
Description
Technical Field
The utility model relates to the structural field of a sewing machine, in particular to a top arm driving device of the sewing machine.
Background
In the clothing processing process, after two layers of cloth are sewn together, the sewn seam is required to be subjected to blind seam drawing processing, so that the seam pattern is more attractive. This process is typically carried out by a stitcher, such as the one disclosed in 202221261988.3, which lifts the top arm to create a gap between the feed belt and the bottom wheel to place the fabric. The swing driving mechanism for controlling the lifting of the top arm is an air cylinder, and the air cylinder needs an air compressor to provide an air source to work, so that the air cylinder is used as a power source for driving, and additional use cost is also required.
In addition, the cylinder pushes the straight line motion of straight up and down, and the end is the arc motion track when the top arm swings, so the seam scraping machine can not drive the top arm to swing in practice according to the disclosure.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a top arm driving device of a sewing machine.
The utility model adopts the following technical scheme:
a top arm drive for a sewing machine, wherein the drive comprises:
The driving piece is fixed at one end of the top arm far away from the feeding belt, and a kidney-shaped hole is formed in one end of the driving piece;
The telescopic motor is provided with a telescopic rod, a driving pin is fixed at the end part of the telescopic rod, the telescopic motor is fixed on the operating platform, the telescopic rod vertically moves, and the driving pin penetrates through the kidney-shaped hole;
The base is fixed with the connecting plate above the driving piece, and two ends of the pressing spring are respectively fixed with the connecting plate and the driving piece, so that the elastic acting force of the pressing spring compression pulls up the driving piece.
In one possible implementation manner, the driving device further comprises a fixing seat, the fixing seat is fixed on the base, one end of the driving piece, which is provided with the kidney-shaped hole, is located in the fixing seat, the telescopic motor is fixed on the base, and the telescopic rod is located downwards in the fixing seat to vertically move.
In one possible implementation manner, the connecting plate is provided with a through connecting hole, an adjusting bolt is penetrated through the connecting hole, the adjusting bolt is in threaded connection with an adjusting nut, the adjusting nut is located on the connecting plate, the connecting plate supports the adjusting bolt, and one end of the compression spring is hooked at the lower end of the adjusting bolt.
In one possible implementation manner, the driving member fixes a connecting pin, the connecting pin is provided with a through rotating hole, the rotating hole is penetrated with the rotating pin, one end of the rotating pin below the connecting pin is provided with a limiting part, the width of the limiting part is larger than that of the rotating hole, and the lower end of the compression spring is hooked at the upper end of the rotating pin.
In one possible implementation, the connecting plate is fixedly connected with a buffer, and the end part of a pressure rod of the buffer is propped against the top arm.
As can be seen from the above description of the structure of the present utility model, compared with the prior art, the present utility model has the following advantages: according to the utility model, the driving pin is fixed under the telescopic rod of the telescopic motor, passes through the kidney-shaped hole of the driving piece, and moves in the kidney-shaped hole and drives the driving piece to act through the lifting of the telescopic rod of the telescopic motor, so that the top arm swings, and the lifting and pressing of the feeding belt at the other end of the top arm are realized. Compared with the mode of an air cylinder, the mode of adopting the telescopic motor to drive does not need to be provided with an air compressor, so that the use cost can be saved. And the tension for lifting the driving piece is formed by the elastic force of compression of the compression spring, so that the feeding belt at the other end of the top arm compresses the cloth downwards.
Drawings
Fig. 1 is a schematic view of the front structure of the present utility model after the top arm is lifted.
Fig. 2 is a schematic perspective view of the front face of the present utility model after the top arm is lowered.
Fig. 3 is an enlarged schematic view at a in fig. 2.
Fig. 4 is an enlarged schematic view at B in fig. 2.
Fig. 5 is a schematic view of the driving member coupled to the telescopic rod.
Description of the embodiments
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings.
Hereinafter, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature.
Furthermore, in the present application, directional terms such as "upper", "lower", and the like are defined with respect to a schematically positioned orientation of components in the drawings, and it should be understood that these directional terms are relative concepts, which are used for description and clarity with respect thereto, and which may be correspondingly varied according to variations in the orientation in which the components are positioned in the drawings.
The utility model discloses a top arm driving device of a sewing machine, which comprises a fixed seat 2, a telescopic motor 3, a driving piece 4, a compression spring 5 and a buffer 6 as shown in figures 1 and 2. Wherein, the fixing seat 2 is fixed on the frame 13 of the sewing machine, and the structure of the fixing seat 2 can be a Chinese character 'ji' shape structure, so that a cavity is formed inside the fixing seat.
As shown in fig. 5, the driving member 4 is fixed at one end of the top arm 11 away from the feeding belt 12 of the sewing machine, and the driving member 4 may be fixed at a side surface of the top arm 11 by a bolt penetrating manner, and the fixing structures in this embodiment may be bolts penetrating. One end of the driving member 4 is provided with a kidney-shaped hole 401, the kidney-shaped hole 401 is located in the fixing base 2, preferably, the driving member 4 has a zigzag structure, the kidney-shaped hole 401 is provided at the lower end of the driving member 4, and the lower end of the driving member 4 extends into the cavity of the fixing base 2.
As shown in fig. 1, the telescopic motor 3 is fixed at the top outside the fixed seat 2, the telescopic motor 3 may be an electric push rod with a telescopic rod 31, the lower end of the telescopic rod 31 of the telescopic motor 3 extends to the fixed seat 2 to fix the driving pin 32, and the driving pin 32 passes through the kidney-shaped hole 401. Referring again to fig. 5, the lower end of the telescopic rod 31 of the telescopic motor 3 is fixed with the connection member 33, the kidney-shaped hole 401 of the driving member 4 partially penetrates the connection member 33, and the driving pin 32 penetrates the kidney-shaped hole 401 while penetrating the connection member 33, thereby forming a structure in which the driving pin 32 is fixed under the telescopic rod 31 and penetrates the kidney-shaped hole 401. In addition, the driving pin 32 can be provided with snap springs at both ends outside the connecting piece 33, so that the driving pin 32 cannot move relative to the connecting piece 33.
When the telescopic rod 31 of the telescopic motor 3 descends, the driving member 4 is moved in the kidney-shaped hole 401 by the driving pin 32 and pushed downward, so that the feeding belt 12 at the other end of the top arm 11 is lifted. When the telescopic rod 31 of the telescopic motor 3 is lifted, the driving member 4 is moved in the kidney-shaped hole 401 by the driving pin 32 and pushed upward, so that the feeding belt 12 at the other end of the top arm 11 is pressed down. In this way, the telescopic motor 3 is driven without an air compressor, compared with a cylinder, so that the use cost can be saved.
As shown in fig. 5, the driving pin 32 penetrates through the kidney-shaped hole 401 to have a gap, so that the driving pin 32 can move relative to the kidney-shaped hole 401, and therefore, in order to enable the feeding belt 12 to press the cloth, the pressing spring 5 pulls up the driving piece 4, so that the feeding belt 12 keeps a pressing force. Referring to fig. 2 and 3 again, the base 13 fixes the connection plate 14 above the driving member 4, two ends of the compression spring 5 respectively fix the connection plate 14 and the driving member 4, and the elastic force of compression of the compression spring 5 forms a pulling force for lifting the driving member 4, so that the feeding belt 12 at the other end of the top arm 11 compresses the cloth downward. In addition, when one end of the feeding belt 12 of the top arm 11 is lifted and swings, the compression spring 5 can also form resistance to the swinging of the top arm 11, so that the driving pin 32 and the side wall of the kidney-shaped hole 401 are prevented from quickly striking to form larger noise in the upward swinging process of the top arm 11, and the noise reduction effect can be achieved.
As shown in fig. 3, the connection plate 14 is provided with a through connection hole (not shown) through which the adjusting bolt 51 is inserted, the adjusting bolt 51 is screwed with the adjusting nut 52, and the adjusting nut 52 is positioned on the connection plate 14, so that the connection plate 14 supports the adjusting bolt 51, and one end of the compression spring 5 is hooked at the first connection hole 521 at the lower end of the adjusting bolt 51. In use, the adjusting nut 52 is rotated to adjust the position of the adjusting nut 52 on the adjusting bolt 51, so that the lower end of the adjusting bolt 52 moves upwards or downwards, thereby adjusting the pulling force of the pressing spring 5 to pull the driving member 4 upwards. Referring again to fig. 4, the driving member 4 fixes the connection pin 53, the connection pin 53 is provided with a through rotation hole (not shown) through which the rotation pin 54 is installed, the rotation pin 54 is provided with a limit portion 541 at one end under the connection pin, the width of the limit portion 541 is larger than that of the rotation hole, the lower end of the compression spring 5 is hooked at the second connection hole 542 at the upper end of the rotation pin 54, and the connection structure enables the lower end of the compression spring 5 to rotate relative to the driving member 4, so that the compression spring 5 can smoothly rotate when the adjustment bolt 51 rotates.
With continued reference to fig. 3, the connecting plate 14 is fixedly connected to the damper 6, which may be a hydraulic damper of the prior art, and the end of the compression rod 61 of the damper 6 abuts against the top arm 11. After adopting this structure, when the feeding belt 12 one end of the top arm 11 is lifted and then in the swing process of lowering, the top arm 11 is lifted upwards to push the pressure bar 61 of the buffer 6, at this time, the buffer 6 can form the buffer resistance to the swing of the top arm 11, and the driving pin 32 and the side wall of the kidney-shaped hole 401 can be prevented from quickly striking to form larger noise in the downward swing process of the top arm 11, so that the noise reduction effect can be achieved.
In addition, the utility model can be provided with a set of controllers, which can be PLC controllers, for controlling the operation of the telescopic motor 3. Further, the controller is also connected with a foot switch, and the foot switch is triggered to send a signal to the controller so as to control the telescopic rod 31 of the telescopic motor 3 to move in a telescopic way.
In summary, the utility model drives the driving member 4 at one end of the top arm 11 to move along with the lifting of the telescopic rod 31 of the telescopic motor 3, so as to lift and press the feeding belt 12 at the other end of the top arm 11. In addition, the elastic force of the compression spring 5 connecting the driving member 4 and the connecting plate 14 can form a pulling force for lifting the driving member 4 so that the feeding belt 12 at the other end of the top arm 11 compresses the cloth downward, and the compression spring 5 and the buffer 6 also form a buffer resistance for the swing of the top arm 11, so that noise generated by rapid impact of the driving pin 32 and the side wall of the kidney-shaped hole 401 during the upward swing and the downward swing of the top arm 11 is reduced, and thus the noise reduction effect can be achieved.
The foregoing is merely illustrative of specific embodiments of the present utility model, but the design concept of the present utility model is not limited thereto, and any insubstantial modification of the present utility model by using the design concept shall fall within the scope of the present utility model.
Claims (5)
1. A top arm drive for a sewing machine, wherein the drive comprises:
The driving piece is fixed at one end of the top arm far away from the feeding belt, and a kidney-shaped hole is formed in one end of the driving piece;
The telescopic motor is provided with a telescopic rod, a driving pin is fixed at the end part of the telescopic rod, the telescopic motor is fixed on the operating platform, the telescopic rod vertically moves, and the driving pin penetrates through the kidney-shaped hole;
The base is fixed with the connecting plate above the driving piece, and two ends of the pressing spring are respectively fixed with the connecting plate and the driving piece, so that the elastic acting force of the pressing spring compression pulls up the driving piece.
2. The top arm driving device of a sewing machine of claim 1, further comprising a fixing base, wherein the fixing base is fixed on the base, one end of the driving member provided with the kidney-shaped hole is positioned in the fixing base, the telescopic motor is fixed on the base, and the telescopic rod is positioned downwards in the fixing base to move vertically.
3. The top arm driving device of a sewing machine according to claim 1, wherein the connecting plate is provided with a through connecting hole, an adjusting bolt is inserted through the connecting hole, the adjusting bolt is connected with an adjusting nut in a screwed mode, the adjusting nut is located on the connecting plate, the connecting plate supports the adjusting bolt, and one end of the compression spring is hooked at the lower end of the adjusting bolt.
4. A top arm driving device of a sewing machine according to claim 3, wherein the driving member fixes a connecting pin provided with a through rotating hole, the rotating hole is provided with a rotating pin, one end of the rotating pin below the connecting pin is provided with a limit part, the width of the limit part is larger than that of the rotating hole, and the lower end of the compression spring is hooked at the upper end of the rotating pin.
5. The top arm driving device of the sewing machine according to claim 1, wherein the connecting plate is fixedly connected with a buffer, and the end part of a pressing rod of the buffer is propped against the top arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420032105.4U CN221544967U (en) | 2024-01-08 | 2024-01-08 | Top arm driving device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420032105.4U CN221544967U (en) | 2024-01-08 | 2024-01-08 | Top arm driving device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221544967U true CN221544967U (en) | 2024-08-16 |
Family
ID=92226374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420032105.4U Active CN221544967U (en) | 2024-01-08 | 2024-01-08 | Top arm driving device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221544967U (en) |
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2024
- 2024-01-08 CN CN202420032105.4U patent/CN221544967U/en active Active
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