CN220166404U - Zigzag sewing machine - Google Patents
Zigzag sewing machine Download PDFInfo
- Publication number
- CN220166404U CN220166404U CN202321539127.1U CN202321539127U CN220166404U CN 220166404 U CN220166404 U CN 220166404U CN 202321539127 U CN202321539127 U CN 202321539127U CN 220166404 U CN220166404 U CN 220166404U
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- lifting
- thread cutting
- sewing machine
- pressing
- connecting rod
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- 238000009958 sewing Methods 0.000 title claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model belongs to the technical field of sewing machines, and particularly relates to a zigzag sewing machine, which comprises a first stepping motor arranged on the side surface of the sewing machine, wherein a driving cam is arranged on an output shaft of the first stepping motor, a lifting and pressing push rod and a thread cutting connecting rod are respectively arranged on the side surface of the driving cam, a lifting and pressing rear lever is arranged on the other side of the lifting and pressing push rod, the lifting and pressing rear lever is rotatably arranged in the sewing machine, the other end of the lifting and pressing rear lever is connected with a presser foot lifting mechanism, the upper end of the thread cutting connecting rod is rotatably connected with the sewing machine, a thread cutting driving part for driving the driving cam to push is formed in the middle of the thread cutting connecting rod, and the lower end of the thread cutting connecting rod is connected with the thread cutting mechanism.
Description
Technical Field
The utility model relates to the technical field of sewing machines, in particular to a zigzag sewing machine.
Background
At present, the thread cutting function used in the working process of the sewing machine is generally realized through an electromagnet, the problems of low response speed and high noise exist, the stroke of the electromagnet cannot be flexibly changed, the vibration is easy to generate in the action, and the problems of continuous thread cutting and locking are easy to cause.
According to the Chinese utility model, the publication number is CN217678054U, and the zigzag sewing machine with integrated automatic thread cutting and presser foot lifting comprises a stepping motor assembly and a cam mechanism, wherein the cam mechanism is driven by the stepping motor assembly to rotate and is provided with a thread cutting crank, the thread cutting structure further comprises a needle plate thread cutting assembly, a movable cutter, a thread cutting guide rail assembly and a thread cutting transmission assembly, the movable cutter is linearly and slidably arranged on the needle plate thread cutting assembly, the thread cutting guide rail assembly is fixedly arranged on one side of the stepping motor assembly, the thread cutting guide rail assembly comprises a guide rail and a sliding block which is slidably arranged on the guide rail, the sliding block is connected with one end of the thread cutting transmission assembly, the movable cutter is connected with the other end of the thread cutting transmission assembly, and the thread cutting crank is provided with a thread cutting driving stroke for driving the sliding block to act.
The wire cutting and presser foot lifting mechanisms are controlled through the cranks arranged at the two ends of the motor respectively, the structure is complex, and the assembly and debugging are troublesome, so that the structure is further improved.
Disclosure of Invention
The utility model aims to provide a zigzag sewing machine, which solves the problem of complex structure in the prior art through a novel transmission mechanism.
The purpose of the utility model is realized in the following way: a zigzag sewing machine comprises a back cover plate arranged on the side face of the sewing machine, a first stepping motor is arranged on the outer side face of the back cover plate, a driving cam is arranged on an output shaft of the first stepping motor, a lifting and pressing push rod and a thread cutting connecting rod are respectively arranged on the side face of the driving cam, and the driving cam, the lifting and pressing push rod and the thread cutting connecting rod are respectively arranged on the inner side face of the back cover plate;
the other side of the lifting and pressing push rod is provided with a lifting and pressing rear lever, the lifting and pressing rear lever is rotatably arranged in the sewing machine, the other end of the lifting and pressing rear lever is connected with a lifting and pressing foot mechanism, the lower end of the lifting and pressing push rod is provided with an arc-shaped driving part for driving a driving cam, the upper end of the lifting and pressing push rod is provided with a pushing block, and one end of the lifting and pressing rear lever is provided with a lifting and pressing driving part for pushing the pushing block;
the upper end of the thread cutting connecting rod is rotationally connected with the sewing machine, the middle part of the thread cutting connecting rod is provided with a thread cutting driving part for driving the cam to push, and the lower end of the thread cutting connecting rod is connected with a thread cutting mechanism.
Preferably, a second stepping motor is further arranged in the sewing machine, a first feeding crank is arranged on an output shaft of the second stepping motor, a first feeding connecting rod is connected with the first feeding crank, the second feeding crank is connected with a second feeding crank, the second feeding crank is connected with a feeding shaft, and the other end of the feeding shaft is connected with a feeding assembly.
Preferably, a bar-shaped limiting hole is formed in the lifting and pressing push rod, and a limiting piece is arranged in the bar-shaped limiting hole, so that the lifting and pressing push rod can be movably fixed on the sewing machine.
Preferably, one end of the post-lifting and pressing lever is provided with a lifting and pressing driving part for pushing by the pushing block.
Preferably, the thread cutting mechanism comprises a thread cutting push plate connected with the thread cutting assembly, and a thread cutting push rod is connected between the thread cutting push plate and the thread cutting connecting rod.
Preferably, a reset spring is connected between the thread cutting push rod and the sewing machine.
Preferably, the end face of the thread cutting push plate is provided with a sliding block, and a sliding rail for the sliding block to linearly move is arranged in the sewing machine.
Preferably, the thread cutting driving part is a convex plane on the side surface of the thread cutting connecting rod.
Preferably, the presser foot lifting mechanism comprises a front presser foot lifting lever connected with the presser foot lifting assembly, and a presser foot lifting pull rod is connected between the front presser foot lifting lever and the rear presser foot lifting lever.
Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:
according to the utility model, the cam is arranged to control thread cutting and presser foot lifting, so that the cost is reduced, and the stepping motor is arranged at the bottom by utilizing the space of the side surface of the sewing machine, so that the sewing machine is not required to be disassembled and overhauled after being inverted in the prior art, and the assembly and disassembly are convenient.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a schematic perspective view of a second embodiment of the present utility model.
Fig. 3 is a schematic structural view of the driving cam, the lifting and pressing push rod and the wire cutting connecting rod.
Reference numerals: 1-a first stepping motor; 2-driving a cam; 3-lifting and pressing the push rod; 4-a wire cutting connecting rod; 5-lifting and pressing the rear lever; 6-a presser foot lifting mechanism; 7-a wire cutting driving part; 8-a wire cutting mechanism; 9-an arc-shaped driving part; 10-pushing blocks; 11-a bar-shaped limiting hole; 12-limiting parts; 13-a lifting and pressing driving part; 14-a wire cutting push plate; 15-cutting a push rod; 16-a slider; 17-slide rails; 18-a step motor II; 19-a first feeding crank;
20-a feeding connecting rod; 21-a second feeding crank; 22-a feeding assembly; 23-lifting and pressing a front lever; 24-lifting and pressing a pull rod; 25-feeding shaft; 26-a return spring; 27-a back cover plate.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.
Referring to fig. 1-3, a zigzag sewing machine comprises a back cover plate 27 arranged on the side surface of the sewing machine, a first stepping motor 1 is arranged on the outer side surface of the back cover plate 27, a driving cam 2 is arranged on an output shaft of the first stepping motor 1, a lifting and pressing push rod 3 and a thread cutting connecting rod 4 are respectively arranged on the side surface of the driving cam 2, and compared with the prior art, the first stepping motor 1 is arranged at the bottom by utilizing the space of the side surface of the sewing machine, and is convenient to assemble and disassemble without reversely arranging the sewing machine, and the lifting and pressing push rod 3 and the thread cutting connecting rod 4 are respectively driven to act by the driving cam 2 so as to drive a thread cutting mechanism to cut threads or drive a presser foot lifting mechanism to lift presser feet.
The outer side shaping of back shroud has the installation cavity that is used for installing step motor one 1, and step motor one 1 sets up in the installation cavity, can reduce step motor one 1's occupation space, the space in the rational utilization organism reduces the volume, and drive cam 2, lift and press push rod 3 and cut line connecting rod 4 are located the medial surface of back shroud 27 respectively, convenient assembling.
The other side of the lifting and pressing push rod 3 is provided with a lifting and pressing rear lever 5, the lifting and pressing rear lever 5 is rotatably arranged in the sewing machine, the other end of the lifting and pressing rear lever 5 is connected with a lifting and pressing foot mechanism 6, the upper end of the thread cutting connecting rod 4 is rotatably connected with a rear cover plate 27 through a fastener, the middle part of the thread cutting connecting rod 4 is formed with a thread cutting driving part 7 for driving the cam 2 to push, and the lower end of the thread cutting connecting rod 4 is connected with a thread cutting mechanism 8.
In the actual working process, when the stepping motor drives the driving cam 2 to rotate, the convex arc part at one end of the driving cam 2 touches the lower end part of the presser foot lifting push rod 3 and pushes the presser foot lifting push rod 3 to move upwards, the presser foot lifting push rod 3 pushes the presser foot lifting rear lever 5 to rotate in the upward moving process, and then the presser foot lifting pull rod 24 drives the presser foot lifting front lever 23 to rotate, so that the presser foot lifting mechanism 6 finally executes the presser foot lifting action.
The lower extreme shaping of lifting and pressing push rod 3 has the arc drive portion 9 that supplies drive cam 2 drive, the upper end shaping of lifting and pressing push rod 3 has ejector pad 10, can improve area of contact, reduces wearing and tearing, makes the work more stable.
The lifting and pressing push rod 3 is internally provided with a bar-shaped limiting hole 11, a limiting piece 12 is arranged in the bar-shaped limiting hole 11, one end of the limiting piece 12 is connected with the rear cover plate 27, so that the lifting and pressing push rod 3 can be movably fixed on a sewing machine to prevent an offset position, and the lifting and pressing rear lever 5 can be pushed after moving upwards.
One end of the lifting and pressing rear lever 5 is provided with a lifting and pressing driving part 13 for pushing the pushing block 10, and the lifting and pressing driving part 13 is cylindrical, so that the contact abrasion between the lifting and pressing driving part and the pushing block can be reduced, and the service life is prolonged.
Referring specifically to fig. 2, the thread cutting mechanism 8 includes a thread cutting push plate 14 connected to the thread cutting assembly, and a thread cutting push rod 15 is connected between the thread cutting push plate 14 and the thread cutting connecting rod 4.
In the actual working process, when the stepping motor drives the driving cam 2 to rotate, the convex arc part at one end of the driving cam 2 will touch the wire cutting driving part 7 arranged on the side surface of the wire cutting connecting rod 4 and push the wire cutting driving part to rotate to one side, and in the process of rotating the wire cutting connecting rod 4, the wire cutting push rod 15 will drive the wire cutting push plate 14 to linearly move, so that the wire cutting mechanism 8 executes the wire cutting action.
A reset spring 26 is connected between the thread cutting push rod 15 and the sewing machine, and when the driving cam 2 leaves the thread cutting driving part 7, the thread cutting push rod 15 is pulled to reset through the reset spring 26, so that automatic reset is realized.
The end face of the thread cutting push plate 14 is provided with a sliding block 16, and a sliding rail 17 for the sliding block 16 to linearly move is arranged in the sewing machine, so that the thread cutting push plate 14 can be kept to linearly reciprocate, and the thread cutting mechanism is conveniently driven to act.
The wire cutting driving part 7 is a convex plane on the side surface of the wire cutting connecting rod 4, so that the driving cam can conveniently push the wire cutting driving part, and then the wire cutting driving part can be arranged as a roller for pushing the driving cam in the actual use process.
The sewing machine is internally provided with a second stepping motor 18, an output shaft of the second stepping motor 18 is provided with a first feeding crank 19, the first feeding crank 19 is connected with a feeding connecting rod 20, the feeding connecting rod 20 is connected with a second feeding crank 21, the second feeding crank 21 is connected with a feeding shaft 25, and the other end of the feeding shaft 25 is connected with a feeding assembly 22.
The presser foot lifting mechanism 6 comprises a front presser foot lifting lever 23 connected with the presser foot lifting assembly, and a presser foot lifting pull rod 24 is connected between the front presser foot lifting lever 23 and the rear presser foot lifting lever 5.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The zigzag sewing machine is characterized by comprising a rear cover plate (27) arranged on the side surface of the sewing machine, wherein a first stepping motor (1) is arranged on the outer side surface of the rear cover plate (27), a driving cam (2) is arranged on an output shaft of the first stepping motor (1), a lifting and pressing push rod (3) and a thread cutting connecting rod (4) are respectively arranged on the side surface of the driving cam (2), and the driving cam (2), the lifting and pressing push rod (3) and the thread cutting connecting rod (4) are respectively positioned on the inner side surface of the rear cover plate (27);
the other side of the lifting and pressing push rod (3) is provided with a lifting and pressing rear lever (5), the lifting and pressing rear lever (5) is rotatably arranged in the sewing machine, the other end of the lifting and pressing rear lever (5) is connected with a lifting and pressing foot mechanism (6), the lower end of the lifting and pressing push rod (3) is formed with an arc-shaped driving part (9) for driving the driving cam (2), the upper end of the lifting and pressing push rod (3) is formed with a push block (10), and one end of the lifting and pressing rear lever (5) is provided with a lifting and pressing driving part (13) for pushing the push block (10);
the upper end of the thread cutting connecting rod (4) is rotationally connected with the sewing machine, a thread cutting driving part (7) for driving the cam (2) to push is formed in the middle of the thread cutting connecting rod (4), and the lower end of the thread cutting connecting rod (4) is connected with a thread cutting mechanism (8).
2. The zigzag sewing machine according to claim 1, wherein: the sewing machine is characterized in that a second stepping motor (18) is further arranged in the sewing machine, a first feeding crank (19) is arranged on an output shaft of the second stepping motor (18), a first feeding connecting rod (20) is connected to the first feeding crank (19), a second feeding crank (21) is connected to the first feeding connecting rod (20), the second feeding crank (21) is connected with a feeding shaft (25), and a feeding assembly (22) is connected to the other end of the feeding shaft (25).
3. The zigzag sewing machine according to claim 1, wherein: a bar-shaped limiting hole (11) is formed in the lifting and pressing push rod (3), and a limiting piece (12) is arranged in the bar-shaped limiting hole (11), so that the lifting and pressing push rod (3) can be movably fixed on the sewing machine.
4. The zigzag sewing machine according to claim 1, wherein: the thread cutting mechanism (8) comprises a thread cutting push plate (14) connected with the thread cutting assembly, and a thread cutting push rod (15) is connected between the thread cutting push plate (14) and the thread cutting connecting rod (4).
5. The zigzag sewing machine according to claim 4, wherein: the end face of the thread cutting push plate (14) is provided with a sliding block (16), and a sliding rail (17) for the sliding block (16) to linearly move is arranged in the sewing machine.
6. The zigzag sewing machine according to claim 4, wherein: a reset spring (26) is connected between the thread cutting push rod (15) and the sewing machine.
7. The zigzag sewing machine according to claim 1, wherein: the thread cutting driving part (7) is a convex plane on the side surface of the thread cutting connecting rod (4).
8. The zigzag sewing machine according to claim 1, wherein: the presser foot lifting mechanism (6) comprises a front presser foot lifting lever (23) connected with the presser foot lifting assembly, and a presser foot lifting pull rod (24) is connected between the front presser foot lifting lever (23) and the rear presser foot lifting lever (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321539127.1U CN220166404U (en) | 2023-06-15 | 2023-06-15 | Zigzag sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321539127.1U CN220166404U (en) | 2023-06-15 | 2023-06-15 | Zigzag sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220166404U true CN220166404U (en) | 2023-12-12 |
Family
ID=89056554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321539127.1U Active CN220166404U (en) | 2023-06-15 | 2023-06-15 | Zigzag sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220166404U (en) |
-
2023
- 2023-06-15 CN CN202321539127.1U patent/CN220166404U/en active Active
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