CN216237601U - Single-motor multifunctional sewing machine - Google Patents
Single-motor multifunctional sewing machine Download PDFInfo
- Publication number
- CN216237601U CN216237601U CN202120768499.6U CN202120768499U CN216237601U CN 216237601 U CN216237601 U CN 216237601U CN 202120768499 U CN202120768499 U CN 202120768499U CN 216237601 U CN216237601 U CN 216237601U
- Authority
- CN
- China
- Prior art keywords
- driving
- presser foot
- motor
- needle pitch
- foot lifting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 54
- 238000009966 trimming Methods 0.000 claims abstract description 53
- 230000009471 action Effects 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 description 11
- 239000004744 fabric Substances 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
The utility model belongs to the technical field of sewing machines, and relates to a single-motor multifunctional sewing machine which comprises a motor, a thread trimming component, a presser foot lifting component and a forward-stitching and backward-stitching needle pitch adjusting component, wherein the motor is a double-head motor, a conveying shaft at one end of the motor is sleeved with a presser foot lifting cam for driving the presser foot lifting to move, an output shaft at the other end of the motor is sleeved with a driving disc, a driving ball head for driving the thread trimming to move is arranged at the edge of one side of the driving disc, a groove is formed in the other side of the driving disc, a needle pitch adjusting cam sleeved on the output shaft is arranged in the groove, an annular slide way corresponding to the shape of the needle pitch adjusting cam is formed by the needle pitch adjusting cam and the outer wall of the groove in a surrounding manner, and a driving ball for driving the needle pitch adjusting to move is arranged in the annular slide way in a sliding manner. The single-motor multifunctional sewing machine provided by the utility model has a simple structure, reduces the assembly of parts, and simultaneously ensures that the tooth frame is not moved when the thread is cut and the presser foot is lifted, thereby ensuring that the stitch of clothes is uniform and unchanged.
Description
Technical Field
The utility model belongs to the technical field of sewing machines, and relates to a single-motor multifunctional sewing machine.
Background
The traditional stitch length adjusting mode of the flat sewing machine mostly uses a stepping motor. When the sewing machine is used for sewing, the stepping motor rotates anticlockwise for a certain angle, the crank at the end of the motor shaft drives the needle pitch adjusting connecting rod to move upwards for a certain distance, so that the needle pitch adjusting crank connected to the other end of the needle pitch adjusting connecting rod swings anticlockwise for a certain amplitude, the moving direction of the cloth feeding mechanism is the same as the moving direction of the main shaft, the forward feeding is adopted as the feeding, the maximum motion amount of the cloth feeding mechanism is the maximum needle pitch required by sewing, and the change of the needle pitch during the sewing can be realized by changing the anticlockwise rotating angle of the stepping motor; during backstitch, the stepping motor rotates clockwise by a certain angle, the crank at the end of the motor shaft drives the needle pitch adjusting connecting rod to move downwards by a certain distance, so that the needle pitch adjusting crank connected to the other end of the needle pitch adjusting connecting rod swings clockwise by a certain amplitude, the movement direction of the cloth feeding mechanism is opposite to that of the main shaft, reverse feeding is adopted for feeding, the maximum movement amount of the cloth feeding mechanism is the maximum needle pitch required by sewing, and the change of the needle pitch during backstitch can be realized by changing the clockwise rotation angle of the stepping motor. The thread cutting mechanism and the presser foot lifting mechanism mostly use electromagnets. And the thread trimming mechanism and the presser foot lifting mechanism are two mutually independent mechanisms which are respectively driven by two electromagnets.
Therefore, three independent mechanisms are required for realizing the functions of adjusting the stitch length of the front stitching and the back stitching, lifting the presser foot and trimming the thread. In order to solve the technical problem that the mechanism is too bulky, a multifunctional machine type with a single motor is available on the market at present, but in actual use, the tooth frame moves simultaneously when the thread is cut and the presser foot is lifted.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the single-motor multifunctional sewing machine which is simple in structure, reduces the assembly of parts, and ensures that the thread rack is not moved when the thread is cut and the presser foot is lifted, thereby ensuring that the stitches of clothes are uniform and unchanged.
In order to solve the above technical problems, the object of the present invention is achieved by the following technical solutions:
a single-motor multifunctional sewing machine comprises a motor, a thread trimming component, a presser foot lifting component and a backstitch stitch length adjusting component, wherein the motor is a double-head motor, a presser foot lifting cam for driving the presser foot lifting action is sleeved on a conveying shaft at one end of the motor, a driving disc is sleeved on an output shaft at the other end of the motor, a driving ball head for driving the thread trimming action is arranged at the edge of one side of the driving disc, a groove is formed in the other side of the driving disc, a stitch length adjusting cam sleeved on the output shaft is arranged in the groove, the stitch length adjusting cam and the outer wall of the groove are enclosed to form an annular slide way corresponding to the shape of the stitch length adjusting cam, and a driving ball for driving the stitch length adjusting action is arranged in the annular slide way in a sliding manner.
In the above-mentioned single-motor multifunctional sewing machine, the driving ball is fixed on the needle pitch swing crank, the needle pitch swing crank is connected with the needle pitch adjusting crank through the needle pitch adjusting shaft, the needle pitch adjusting crank is hinged with one end of the needle pitch adjusting connecting rod, the other end of the needle pitch adjusting connecting rod is hinged with the forward sewing and backstitch needle pitch adjusting assembly, and the forward sewing and backstitch needle pitch adjusting assembly comprises a swing connecting rod and a swing seat.
In foretell single motor multifunctional sewing machine, the drive bulb corresponds and is provided with the Y-shaped connecting rod of connection in trimming drive shaft one end, the Y-shaped connecting rod includes the flat portion of downside and the arc portion of upside, and the drive bulb drives the trimming drive shaft when the motion of flat portion rotates, does not drive the trimming drive shaft and rotates when the motion of arc portion, the other end of trimming drive shaft is connected with the trimming crank, the trimming crank is articulated with the trimming subassembly, the trimming subassembly includes trimming connecting rod, trimming swing seat and moves the knife stationary knife subassembly in proper order, and the trimming crank drives trimming connecting rod and the action of trimming swing seat in proper order, and the trimming swing seat drives and moves the knife and rotate and accomplish the trimming.
In the above single-motor multifunctional sewing machine, the driving ball is disposed on a side of the driving disc close to the motor, and the driving ball is disposed on a side of the driving disc far from the motor.
In the above mentioned single motor multifunctional sewing machine, the needle pitch adjusting cam and the driving disc are of an integral structure.
In the above single-motor multifunctional sewing machine, the presser foot lifting assembly comprises a presser foot lifting ejector rod vertically arranged above the presser foot lifting cam and a presser foot lifting connecting rod hinged on the sewing machine shell, the upper end of the presser foot lifting ejector rod is in contact connection with one end of the presser foot lifting connecting rod, the other end of the presser foot lifting connecting rod is connected with a pull rod for pulling the presser foot assembly, the presser foot assembly comprises a presser foot, a presser foot rod and a drive plate, and the pull rod pulls the drive plate to rotate, so that the presser foot rod rises along with the presser foot lifting action.
Further, the lower end of the presser foot lifting ejector rod is provided with an ejector block, and the lower end face of the ejector block is provided with a driving plane corresponding to the presser foot lifting cam.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model drives four actions of stitch length adjustment, thread cutting and presser foot lifting of the front stitching and the back stitching through one motor, thereby reducing the part structure, reducing the noise of the machine, improving the working benefit and saving the cost.
2. According to the utility model, the stitch length adjusting cam in the driving disc drives the forward sewing and backward sewing stitch length adjusting assembly, when the sewing machine performs the actions of cutting or lifting the presser foot, the stitch length adjusting cam does not touch the forward sewing and backward sewing stitch length adjusting action, so that the tooth frame is kept still when cutting or lifting the presser foot, and the uniform and unchanged stitches of clothes are ensured.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a first perspective view of the drive disk of the present invention in cooperation with various components;
FIG. 3 is a second perspective view of the drive disk of the present invention in cooperation with various components;
reference numerals: 1. a motor; 2. lifting a presser foot cam; 3. a drive disc; 4. a drive bulb; 5. a needle pitch adjustment cam; 6. an annular chute; 7. a drive ball; 8. a needle pitch swing crank; 9. a needle pitch adjusting shaft; 10. a needle pitch adjusting crank; 11. a needle pitch adjusting link; 12. a thread trimming drive shaft; 13. a forked connecting rod; 14. a thread cutting crank; 15. lifting a presser foot ejector rod; 16. lifting a presser foot connecting rod; 17. a pull rod; 18. and (7) a top block.
Detailed Description
The utility model is further described in the following with reference to specific embodiments in conjunction with the accompanying drawings, see fig. 1-3:
a single-motor 1 multifunctional sewing machine comprises a motor 1, a thread trimming assembly, a presser foot lifting assembly and a backstitch stitch pitch adjusting assembly, wherein the motor 1 is a double-head motor, a conveying shaft at one end of the motor 1 is sleeved with a presser foot lifting cam 2 for driving the presser foot lifting to move, an output shaft at the other end of the motor 1 is sleeved with a driving disc 3, a driving ball head 4 for driving the thread trimming to move is arranged at the edge of one side of the driving disc 3, a groove is formed in the other side of the driving disc 3, a stitch pitch adjusting cam 5 sleeved on the output shaft is arranged in the groove, the stitch pitch adjusting cam 5 and the outer wall of the groove are enclosed to form an annular slide way 6 corresponding to the stitch pitch adjusting cam 5 in shape, and a driving ball 7 for driving the stitch pitch adjusting to move is arranged in the annular slide way 6 in a sliding mode. The output shaft of the motor 1 rotates at different angles to respectively drive the thread trimming component, the presser foot lifting component and the forward sewing and backward sewing stitch length adjusting component to act. Through the circumferential layout of each driving component on the output shaft of the motor 1, the output shaft is respectively triggered to move at different angles, when the sewing machine performs the actions of shearing or lifting the presser foot, the non-protruding part of the needle pitch adjusting cam 5 is contacted with the driving ball 7, the needle pitch adjusting action of the forward sewing and backward sewing is not touched, the tooth frame is kept still when the sewing machine shears or lifts the presser foot, and the uniformity and invariance of the stitches of clothes are ensured.
The driving structure for the forward sewing and backward sewing needle pitch adjusting action is as follows: the driving ball 7 is fixed on the needle pitch swing crank 8, the needle pitch swing crank 8 is connected with the needle pitch adjusting crank 10 through the needle pitch adjusting shaft 9, the needle pitch adjusting crank 10 is hinged with one end of the needle pitch adjusting connecting rod 11, the other end of the needle pitch adjusting connecting rod 11 is hinged with the forward sewing backstitch needle pitch adjusting assembly, and the forward sewing backstitch needle pitch adjusting assembly comprises a swing connecting rod and a swing seat.
The driving structure of the thread cutting action is as follows: the driving bulb 4 is correspondingly provided with a fork-shaped connecting rod 13 connected to one end of a trimming driving shaft 12, the fork-shaped connecting rod 13 comprises a flat part on the lower side and an arc part on the upper side, the driving bulb 4 drives the trimming driving shaft 12 to rotate when the flat part moves, the trimming driving shaft 12 is not driven to rotate when the arc part moves, the other end of the trimming driving shaft 12 is connected with a trimming crank 14, the trimming crank 14 is hinged to a trimming component, the trimming component sequentially comprises a trimming connecting rod, a trimming swinging seat and a movable cutter fixed cutter component, the trimming crank 14 sequentially drives the trimming connecting rod and the trimming swinging seat to move, and the trimming swinging seat drives the movable cutter to rotate to complete trimming.
Further, the driving ball 4 is disposed on a side of the driving disc 3 close to the motor 1, and the driving ball 7 is disposed on a side of the driving disc 3 far from the motor 1.
Furthermore, the needle pitch adjusting cam 5 and the driving disc 3 are of an integrated structure.
The driving structure for the presser foot lifting action is as follows: the presser foot lifting assembly comprises a presser foot lifting ejector rod 15 vertically arranged above the presser foot lifting cam 2 and a presser foot lifting connecting rod 16 hinged on the sewing machine shell, the upper end of the presser foot lifting ejector rod 15 is connected with one end of the presser foot lifting connecting rod 16 in a contact mode, the other end of the presser foot lifting connecting rod 16 is connected with a pull rod 17 for pulling the presser foot assembly, the presser foot assembly comprises a presser foot, a presser foot rod and a driving plate, the pull rod 17 pulls the driving plate to rotate, and the presser foot rod rises along with the presser foot lifting action.
Further, in order to enable the tire pressure foot cam to drive the pressure foot lifting ejector rod 15 better, the lower end of the pressure foot lifting ejector rod 15 is provided with a top block 18, the lower end face of the top block 18 is provided with a driving plane corresponding to the pressure foot lifting cam 2, and the tire pressure foot cam drives the top block 18 to move upwards when rotating at a certain angle.
The working process of the utility model is as follows:
thread trimming: when the output shaft of the motor 1 rotates at the thread cutting angle, the output shaft drives the driving disc 3 and the presser foot lifting cam 2 to rotate along with the output shaft. The presser foot lifting cam 2 does not touch the presser foot lifting ejector rod 15 in the angle range, so that the action of the presser foot lifting is not touched; the convex part of the stitch length adjusting cam 5 is not contacted with the driving ball 7, so that the action of the stitch length adjusting component of the forward stitching and backward stitching is not triggered. The driving ball head 4 rotates in the angle range by driving the fork-shaped connecting rod 13, the fork-shaped connecting rod 13 drives the trimming driving rod to rotate, the trimming driving rod further drives the trimming crank 14 to drive the trimming swinging seat to move, and the trimming swinging seat finishes trimming by driving the movable cutter to move.
A presser foot lifting action: when the output shaft of the motor 1 rotates at the presser foot lifting angle, the output shaft drives the driving disc 3 to rotate along with the presser foot lifting angle. The driving ball head 4 does not touch the trimming swing rod in the angle range, so that the trimming action is not touched; the convex part of the stitch length adjusting cam 5 is not contacted with the driving ball 7, so that the action of the stitch length adjusting component of the forward stitching and backward stitching is not triggered. The presser foot lifting cam 2 drives the presser foot lifting ejector rod 15 to move upwards through the ejector block 18, the presser foot lifting ejector rod 15 drives the presser foot connecting rod to rotate, the rotary presser foot connecting rod pulls the pull rod 17, and the pull rod 17 pulls the presser foot assembly to complete presser foot lifting.
Adjusting the forward sewing and backward sewing stitch length: when the output shaft of the motor 1 rotates at the stitch length adjusting angle, the output shaft drives the driving disc 3 to rotate along with the output shaft. The driving ball head 4 does not touch the trimming swing rod in the angle range, so that the trimming action is not touched; the presser foot lifting cam 2 does not touch the presser foot lifting ram 15 in the angle range, and therefore does not touch the presser foot lifting operation. When the driving disc 3 rotates, the convex part of the needle pitch adjusting cam 5 drives the driving ball 7 to move in the annular slideway 6, so as to drive the needle pitch swinging crank 8 to rotate, the needle pitch swinging crank 8 drives the needle pitch adjusting crank 10 through the needle pitch adjusting shaft 9, the needle pitch adjusting crank 10 drives the needle pitch adjusting connecting rod 11 to rotate, and the needle pitch adjusting connecting rod 11 drives the swinging component to act, so that the forward sewing needle pitch adjustment and the backward sewing needle pitch adjustment are respectively completed.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.
Claims (7)
1. A single-motor multifunctional sewing machine, which comprises a motor (1), a thread trimming component, a presser foot lifting component and a forward-sewing backstitch stitch length adjusting component, it is characterized in that the motor (1) is a double-head motor, a presser foot lifting cam (2) for driving the presser foot lifting action is sleeved on a conveying shaft at one end of the motor (1), a driving disc (3) is sleeved on an output shaft at the other end of the motor (1), a driving ball head (4) for driving the trimming action is arranged at the edge of one side of the driving disc (3), a groove is arranged at the other side of the driving disc (3), a needle pitch adjusting cam (5) sleeved on the output shaft is arranged in the groove, the needle pitch adjusting cam (5) and the outer wall of the groove are enclosed to form an annular slide way (6) corresponding to the shape of the needle pitch adjusting cam (5), and a driving ball (7) for driving the needle pitch adjusting action is arranged in the annular slide way (6) in a sliding manner.
2. The single-motor multifunctional sewing machine according to claim 1, wherein the driving ball (7) is fixed on a needle pitch swing crank (8), the needle pitch swing crank (8) is connected with a needle pitch adjusting crank (10) through a needle pitch adjusting shaft (9), the needle pitch adjusting crank (10) is hinged with one end of a needle pitch adjusting connecting rod (11), and the other end of the needle pitch adjusting connecting rod (11) is hinged with a forward sewing and backstitch needle pitch adjusting assembly.
3. The single-motor multifunctional sewing machine as claimed in claim 1, characterized in that the driving bulb (4) is correspondingly provided with a fork-shaped connecting rod (13) connected to one end of a thread cutting driving shaft (12), the other end of the thread cutting driving shaft (12) is connected with a thread cutting crank (14), and the thread cutting crank (14) is hinged with a thread cutting assembly.
4. The single-motor multifunctional sewing machine according to claim 1, characterized in that the driving ball (4) is arranged on the side of the driving disc (3) close to the motor (1), and the driving ball (7) is arranged on the side of the driving disc (3) far away from the motor (1).
5. A single-motor multifunctional sewing machine according to claim 1, characterized in that the needle pitch adjusting cam (5) and the driving disc (3) are of an integral structure.
6. The single-motor multifunctional sewing machine according to claim 1, characterized in that the presser foot lifting assembly comprises a presser foot lifting ejector rod (15) vertically arranged above the presser foot lifting cam (2) and a presser foot lifting connecting rod (16) hinged on the sewing machine shell, the upper end of the presser foot lifting ejector rod (15) is in contact connection with one end of the presser foot lifting connecting rod (16), and the other end of the presser foot lifting connecting rod (16) is connected with a pull rod (17) for pulling the presser foot assembly.
7. The single-motor multifunctional sewing machine according to claim 6, wherein the lower end of the presser foot lifting ejector rod (15) is provided with an ejector block (18), and the lower end surface of the ejector block (18) is provided with a driving plane corresponding to the presser foot lifting cam (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120768499.6U CN216237601U (en) | 2021-04-14 | 2021-04-14 | Single-motor multifunctional sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120768499.6U CN216237601U (en) | 2021-04-14 | 2021-04-14 | Single-motor multifunctional sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216237601U true CN216237601U (en) | 2022-04-08 |
Family
ID=80939772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120768499.6U Expired - Fee Related CN216237601U (en) | 2021-04-14 | 2021-04-14 | Single-motor multifunctional sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216237601U (en) |
-
2021
- 2021-04-14 CN CN202120768499.6U patent/CN216237601U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109440312B (en) | Control method of thread trimming and presser foot lifting device on sewing machine | |
| CN109487454B (en) | Presser foot device is lifted to sewing machine's trimming | |
| CN111979654A (en) | Driving device for trimming, lifting presser foot and adjusting needle pitch in sewing machine | |
| CN111501214B (en) | Sewing machine thread trimming, presser foot lifting and needle distance adjusting device and sewing machine | |
| CN111501223B (en) | Cam wheel | |
| CN111501213B (en) | Method for adjusting needle distance by lifting and pressing thread of sewing machine | |
| CN216237601U (en) | Single-motor multifunctional sewing machine | |
| CN213538360U (en) | Single-motor flat car sewing machine | |
| CN210657425U (en) | Overedger | |
| CN210529222U (en) | Novel thread trimming mechanism for sewing machine | |
| WO2022213638A1 (en) | Sewing machine transmission structure and method | |
| CN216156106U (en) | Sewing machine | |
| CN214496731U (en) | Single-motor multifunctional sewing machine | |
| CN213538356U (en) | Single-motor flat car sewing machine | |
| CN213866784U (en) | Double-motor flat car sewing machine | |
| CN212357606U (en) | Driving device for trimming, lifting presser foot and adjusting needle pitch in sewing machine | |
| CN213624654U (en) | Single-motor flat car sewing machine | |
| CN221344891U (en) | Sewing machine | |
| CN214300655U (en) | Sewing device | |
| CN216193269U (en) | Single motor controlled multifunctional sewing machine | |
| CN105908397B (en) | The driving device and sewing machine of thread cutting mechanism of sewing machine | |
| CN214193705U (en) | Single-motor flat car sewing machine | |
| CN209836493U (en) | Driving device for trimming and lifting presser foot on sewing machine | |
| CN216663441U (en) | Sewing machine lifts integrative drive arrangement of presser foot and backstitch | |
| CN213896255U (en) | Sewing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220408 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |