CN217026312U - Composite driving mechanism of sewing machine and sewing machine with same - Google Patents
Composite driving mechanism of sewing machine and sewing machine with same Download PDFInfo
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- CN217026312U CN217026312U CN202122998042.7U CN202122998042U CN217026312U CN 217026312 U CN217026312 U CN 217026312U CN 202122998042 U CN202122998042 U CN 202122998042U CN 217026312 U CN217026312 U CN 217026312U
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Abstract
The utility model relates to the technical field of sewing equipment and discloses a compound driving mechanism of a sewing machine and the sewing machine with the compound driving mechanism, which comprises a driving shaft, an adjusting cam and a presser foot lifting cam, wherein the adjusting cam and the presser foot lifting cam are respectively fixedly sleeved on the driving shaft and synchronously rotate with the driving shaft; the needle pitch adjusting mechanism further comprises a first rocker arm part, a swinging seat connecting rod and a feeding shaft which are sequentially connected, wherein when the needle pitch is adjusted, one end of the first rocker arm part, far away from the swinging seat connecting rod, is abutted against the adjusting cam; the presser foot lifting mechanism further comprises a second rocker arm component, a push rod and a rear lever which are sequentially connected, and when the presser foot is lifted, one end, far away from the push rod, of the second rocker arm component is abutted to the presser foot lifting cam. The utility model simplifies the structure and operation of the sewing machine, ensures the control precision, effectively reduces the cost and improves the quality of the sewn stitches.
Description
Technical Field
The utility model relates to the technical field of sewing equipment, in particular to a compound driving mechanism of a sewing machine and the sewing machine with the compound driving mechanism.
Background
The traditional sewing machine is provided with a presser foot lifting mechanism and a needle pitch adjusting and backstitching mechanism, and the two mechanisms are independently driven and used and are auxiliary mechanisms of the sewing machine. The presser foot lifting mechanism has the following functions: the seam material is compressed, the stitch quality is improved, and meanwhile, the counter-acting force of the feeding teeth of the feeding mechanism is provided. The needle pitch adjusting and backstitching mechanism has the following functions: the length of the sewing needle pitch and the reinforcement through local reciprocating threads are conveniently adjusted by adjusting the movement distance and the movement direction of the feeding teeth of the feeding mechanism during the backstitch operation. The two mechanisms independently execute relevant mechanical actions to assist the main mechanism to work.
In recent years, along with the continuous improvement of people to the dress demand, the sewing machine is used as a necessary machine in the dress manufacturing industry, and the traditional sewing machine has the defects of various manual operation actions, low efficiency and rough sewing stitches, so that the market demand cannot be met. Along with the application of the electric control technology on the sewing machine is mature day by day, a presser foot lifting mechanism, a needle pitch adjusting and backstitching mechanism and two independent mechanical actuating mechanisms of the traditional sewing machine are complex in structure and multiple in parts, so that the cost is increased, and the quality of sewn stitches needs to be further improved. The chinese patent of invention (application publication No. 105821597a, application publication No. 2016.08.03) discloses an automatic presser foot lifting and backward and forward sewing device of a sewing machine. The lifting and pressing foot driver is provided with a first straight rod capable of reciprocating, and the first straight rod is connected with one end of a pull rope of the pull rope component; the other end of the pull rope is connected with one end of the swinging rod; the swing rod can swing around the swing center; the other end of the swinging rod is in contact with one end of a pressure foot lifting rear lever, and the pressure foot lifting rear lever can swing around the axis of the pressure foot lifting rear lever; the other end of the lever after lifting the presser foot is connected with the presser foot lifting mechanism, and the operation of the presser foot lifting mechanism can be driven through the swing of the lever after lifting the presser foot; the backward and forward sewing driver is provided with a second straight rod capable of reciprocating, the second straight rod is connected with one end of a pull rod, and the other end of the pull rod is connected with the swinging plate seat; the swing plate seat can swing around the swing axis of the swing plate seat, and the operation of backward and forward seams can be realized through the swing of the swing plate seat. It can be known from the above that the above patent includes two drivers, be respectively lift presser foot driver and two down and up seam drivers, has the defect such as complicated structure, with high costs.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a compound driving mechanism of a sewing machine and the sewing machine with the same.
In order to solve the technical problems, the utility model is solved by the following technical scheme:
a composite driving mechanism of a sewing machine comprises a driving shaft, an adjusting cam and a presser foot lifting cam, wherein the adjusting cam and the presser foot lifting cam are respectively fixedly sleeved on the driving shaft and synchronously rotate with the driving shaft;
the needle pitch adjusting mechanism is characterized by also comprising a first rocker arm part, a connecting rod of the swing seat and a feeding shaft which are sequentially connected, wherein when the needle pitch is adjusted, one end of the first rocker arm part, which is far away from the connecting rod of the swing seat, is abutted against an adjusting cam;
the presser foot lifting mechanism further comprises a second rocker arm component, a push rod and a rear lever which are sequentially connected, and when the presser foot is lifted, one end, far away from the push rod, of the second rocker arm component is abutted to the presser foot lifting cam.
Preferably, the swing seat further comprises a return spring, one end of the return spring is connected with the machine body, and the other end of the return spring is connected to the swing seat connecting rod.
Preferably, the feeding device further comprises a swinging seat, a connecting rod of the swinging seat is vertically arranged between the first rocker arm component and the swinging seat, and the lower end of the connecting rod of the swinging seat is connected with the feeding shaft through the swinging seat.
Preferably, the first rocker arm component is transversely arranged between the adjusting cam and the swing seat connecting rod, and the end part of the first rocker arm component is rotatably connected with the upper end of the swing seat connecting rod; the second rocker arm component is transversely arranged between the pressure raising foot cam and the ejector rod, and the end part of the second rocker arm component is rotatably connected with the lower end of the ejector rod.
Preferably, the rocking device further comprises a rocking arm shaft fixedly arranged on the machine body, the rocking arm shaft is positioned between the driving shaft and the rocking seat connecting rod, the first rocking arm part and the second rocking arm part are arranged side by side and are respectively and rotatably sleeved on the rocking arm shaft, and the rocking arm shaft penetrates through the middles of the first rocking arm part and the second rocking arm part.
Preferably, the needle gauge adjusting mechanism further comprises a first roller and a second roller, the first roller is rotatably arranged at one end, far away from the connecting rod of the swinging seat, of the first rocker arm part, and when the needle gauge is adjusted, the first roller abuts against the adjusting cam; the second roller is rotatably arranged at one end of the second rocker arm component far away from the ejector rod, and when the presser foot is lifted, the second roller is abutted against the presser foot lifting cam.
Preferably, the driving shaft, the adjusting cam and the pressure raising and pressing foot cam are of an integrated structure.
A sewing machine comprises the composite driving mechanism of the sewing machine.
Due to the adoption of the technical scheme, the utility model has the remarkable technical effects that:
1. the same power drive control source is used for controlling the presser foot lifting action of the sewing machine and adjusting the size of the sewing needle pitch or performing backstitch operation, so that the structure and the operation of the sewing machine are simplified, the control precision is ensured, the cost is effectively reduced, and the quality of the sewn stitches is improved.
2. The first rocker arm component and the second rocker arm component rotate around a rocker shaft in the middle of the first rocker arm component and the second rocker arm component, the adjusting cam and the presser foot lifting cam can respectively correspondingly push the first rocker arm component and the second rocker arm component to swing through small pushing force, and the load of the driving motor is reduced according to the arrangement of a lever principle.
Drawings
Fig. 1 is a schematic view of a first perspective structure of the driving mechanism of the present invention.
Fig. 2 is a schematic perspective view of a second embodiment of the driving mechanism of the present invention.
Fig. 3 is a schematic perspective view of the presser foot drive mechanism.
Fig. 4 is a perspective view of the pitch adjustment drive mechanism.
The names of the parts indicated by the numerical references in the drawings are as follows: 1-driving shaft, 2-adjusting cam, 3-pressure foot lifting cam, 4-rocker arm component I, 5-swing seat connecting rod, 6-feeding shaft, 7-rocker arm component II, 8-ejector rod, 9-rear lever, 10-reset spring, 11-swing seat, 12-rocker arm shaft, 13-roller I, 14-roller II.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A compound driving mechanism of a sewing machine is disclosed, as shown in fig. 1 to 4, comprising a driving shaft 1, an adjusting cam 2 and a presser foot lifting cam 3, wherein the adjusting cam 2 and the presser foot lifting cam 3 are respectively fixedly sleeved on the driving shaft 1 and synchronously rotate with the driving shaft 1. The needle pitch adjusting mechanism further comprises a first rocker arm part 4, a swing seat connecting rod 5 and a feeding shaft 6 which are sequentially connected, and when the needle pitch is adjusted, one end, far away from the swing seat connecting rod 5, of the first rocker arm part 4 abuts against the adjusting cam 2. The presser foot lifting mechanism further comprises a second rocker arm component 7, a mandril 8 and a rear lever 9 which are connected in sequence, and when the presser foot is lifted, one end of the second rocker arm component 7, which is far away from the mandril 8, is abutted against the presser foot lifting cam 3. The driving shaft 1 is driven to rotate by the driving motor, the driving motor is a stepping motor or a servo motor, the adjusting cam 2 and the presser foot lifting cam 3 synchronously rotate along with the driving shaft 1, when the adjusting cam 2 abuts against the first rocker arm part 4 by controlling the rotating direction of the driving motor, the presser foot lifting cam 3 is separated from the second rocker arm part 7, when the adjusting cam 2 is matched with the first rocker arm part 4, the needle pitch can be adjusted by controlling the rotating angle of the adjusting cam 2, and the backstitch adjustment of the sewing machine can also be controlled; when the presser foot lifting cam 3 abuts against the second rocker arm component 7, the adjusting cam 2 and the first rocker arm component 4 are in a separated state, and mutual interference of needle gauge adjusting action and presser foot lifting action is avoided. The structure of the driving mechanism is simplified, the cost of the driving mechanism is effectively reduced, and meanwhile, the quality of the sewn stitches is improved.
The device also comprises a return spring 10 with one end connected with the machine body, and the other end of the return spring 10 is connected with the swing seat connecting rod 5. The lower end of the return spring 10 is connected to the machine body and is positioned on the inner side of the swing seat connecting rod 5, and the upper end of the return spring 10 is connected between the middle part and the upper end part of the swing seat connecting rod 5. The return spring 10 rotates towards the first rocker arm part 4 by pulling the upper end of the connecting rod 5 of the swinging seat, so that the end part of the first rocker arm part 4 is tightly attached to the adjusting cam 2 during needle pitch adjustment, and the precision of needle pitch adjustment is improved.
The device further comprises a swing seat 11, a swing seat connecting rod 5 is vertically arranged between the first rocker arm component 4 and the swing seat 11, and the lower end of the swing seat connecting rod 5 is connected with the feeding shaft 6 through the swing seat 11. When the needle pitch is adjusted, the adjusting cam 2 rotates and abuts against the first rocker arm part 4 to push the first rocker arm part 4 to act, and the swing seat connecting rod 5 pushes the swing seat 11 to swing under the driving of the first rocker arm part 4, so that the position of the feeding shaft 6 is adjusted, and the adjustment of the needle pitch or the adjustment of backstitch is realized.
The first rocker arm part 4 is transversely arranged between the adjusting cam 2 and the swing seat connecting rod 5, the end part of the first rocker arm part 4 is rotatably connected with the upper end of the swing seat connecting rod 5, the flexibility between the first rocker arm part 4 and the swing seat connecting rod 5 is improved, and during needle pitch adjustment, the adjusting cam 2 controls the first rocker arm part 4 to swing so as to drive the swing seat connecting rod 5 to swing. The second rocker arm component 7 is transversely arranged between the second pressure lifting pin cam 3 and the ejector rod 8, the end part of the second rocker arm component 7 is rotatably connected with the lower end of the ejector rod 8, the flexibility between the second rocker arm component 7 and the ejector rod 8 is improved, and when the pressure lifting pin acts, the second rocker arm component 7 is controlled by the second pressure lifting pin cam 3 to swing, so that the ejector rod 8 is driven to swing.
The swing mechanism further comprises a rocker arm shaft 12 fixedly mounted on the machine body, the rocker arm shaft 12 is located between the driving shaft 1 and the swing seat connecting rod 5, the rocker arm part I4 and the rocker arm part II 7 are arranged side by side and are respectively sleeved on the rocker arm shaft 12 in a rotatable mode, and the rocker arm shaft 12 penetrates through the middles of the rocker arm part I4 and the rocker arm part II 7. The first rocker arm component 4 and the second rocker arm component 7 rotate around the rocker arm shaft 12, so that the swing seat connecting rod 5 and the ejector rod 8 are correspondingly driven to swing respectively, the adjusting cam 2 and the pressure foot lifting cam 3 can correspondingly push the first rocker arm component 4 and the second rocker arm component 7 to swing respectively through smaller thrust, and the load of the driving motor is reduced according to the arrangement of a lever principle. The swing mode of the first rocker arm component 4 and the second rocker arm component 7 is simplified, and meanwhile, the swing structure of the first rocker arm component 4 and the second rocker arm component 7 is improved.
The needle pitch adjusting mechanism further comprises a first roller 13 and a second roller 14, the first roller 13 is rotatably arranged at one end, far away from the swing seat connecting rod 5, of the first rocker arm part 4, when the needle pitch is adjusted, the first roller 13 abuts against the adjusting cam 2, the end portion of the first rocker arm part 4 is attached to the profile surface of the adjusting cam 2 through the first roller 13, friction between the first rocker arm part 4 and the adjusting cam 2 is reduced, and the matching flexibility of the first rocker arm part 4 and the adjusting cam 2 is improved. The roller II 14 is rotatably arranged at one end, far away from the ejector rod 8, of the rocker arm component II 7, when the presser foot is lifted, the roller II 14 abuts against the presser foot lifting cam 3, the end portion of the rocker arm component II 7 is matched with the presser foot lifting cam 3 through the roller II 14, friction between the rocker arm component II 7 and the presser foot lifting cam 3 is reduced, and the flexibility of matching of the rocker arm component II 7 and the presser foot lifting cam 3 is improved.
Example 2
In the compound driving mechanism of a sewing machine, as shown in fig. 1 to 4, a driving shaft 1, an adjusting cam 2 and a presser foot lifting cam 3 are integrated in embodiment 1. The structure of the driving assembly is simplified, and the driving shaft 1, the adjusting cam 2 and the pressure raising and pressing foot cam 3 are convenient to assemble on the machine body.
Example 3
A sewing machine, as shown in figures 1 to 4, comprises a compound driving mechanism of the sewing machine.
Claims (8)
1. The utility model provides a compound actuating mechanism of sewing machine which characterized in that: the device comprises a driving shaft (1), an adjusting cam (2) and a presser foot lifting cam (3), wherein the adjusting cam (2) and the presser foot lifting cam (3) are respectively fixedly sleeved on the driving shaft (1) and synchronously rotate with the driving shaft (1);
the needle pitch adjusting mechanism further comprises a first rocker arm part (4), a swing seat connecting rod (5) and a feeding shaft (6) which are sequentially connected, wherein during needle pitch adjustment, one end, far away from the swing seat connecting rod (5), of the first rocker arm part (4) is abutted against the adjusting cam (2);
the presser foot lifting mechanism is characterized by further comprising a second rocker arm component (7), a push rod (8) and a rear lever (9) which are connected in sequence, wherein when the presser foot is lifted, one end, far away from the push rod (8), of the second rocker arm component (7) is abutted to the presser foot lifting cam (3).
2. The compound drive mechanism of a sewing machine according to claim 1, characterized in that: the device also comprises a return spring (10) with one end connected with the machine body, and the other end of the return spring (10) is connected to the swinging seat connecting rod (5).
3. The compound drive mechanism of a sewing machine according to claim 1, characterized in that: the device is characterized by further comprising a swinging seat (11), a swinging seat connecting rod (5) is vertically arranged between the first rocker arm component (4) and the swinging seat (11), and the lower end of the swinging seat connecting rod (5) is connected with the feeding shaft (6) through the swinging seat (11).
4. A compound drive mechanism of a sewing machine according to claim 1, characterized in that: the first rocker arm component (4) is transversely arranged between the adjusting cam (2) and the swinging seat connecting rod (5), and the end part of the first rocker arm component (4) is rotatably connected with the upper end of the swinging seat connecting rod (5); the second rocker arm component (7) is transversely arranged between the pressure raising and pressing foot cam (3) and the push rod (8), and the end part of the second rocker arm component (7) is rotatably connected with the lower end of the push rod (8).
5. A compound drive mechanism of a sewing machine according to claim 1, characterized in that: the swing mechanism is characterized by further comprising a rocker arm shaft (12) fixedly installed on the machine body, the rocker arm shaft (12) is located between the driving shaft (1) and the swing seat connecting rod (5), the rocker arm component I (4) and the rocker arm component II (7) are arranged side by side and are respectively and rotatably sleeved on the rocker arm shaft (12), and the rocker arm shaft (12) penetrates through the middles of the rocker arm component I (4) and the rocker arm component II (7).
6. The compound drive mechanism of a sewing machine according to claim 1, characterized in that: the needle pitch adjusting mechanism further comprises a first roller (13) and a second roller (14), wherein the first roller (13) is rotatably arranged at one end, far away from the swing seat connecting rod (5), of the first rocker arm component (4), and when the needle pitch is adjusted, the first roller (13) is abutted against the adjusting cam (2); the second roller (14) is rotatably arranged at one end of the second rocker arm component (7) far away from the ejector rod (8), and when the presser foot is lifted, the second roller (14) is abutted against the presser foot lifting cam (3).
7. A compound drive mechanism of a sewing machine according to claim 1, characterized in that: the driving shaft (1), the adjusting cam (2) and the presser foot lifting cam (3) are of an integrated structure.
8. A sewing machine characterized in that: a compound drive mechanism comprising a sewing machine as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122998042.7U CN217026312U (en) | 2021-11-30 | 2021-11-30 | Composite driving mechanism of sewing machine and sewing machine with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122998042.7U CN217026312U (en) | 2021-11-30 | 2021-11-30 | Composite driving mechanism of sewing machine and sewing machine with same |
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| CN217026312U true CN217026312U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122998042.7U Active CN217026312U (en) | 2021-11-30 | 2021-11-30 | Composite driving mechanism of sewing machine and sewing machine with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108532135A (en) * | 2018-05-28 | 2018-09-14 | 池州市旭豪机械有限公司 | A kind of sewing machine feed wheel adjustment mechanism |
-
2021
- 2021-11-30 CN CN202122998042.7U patent/CN217026312U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108532135A (en) * | 2018-05-28 | 2018-09-14 | 池州市旭豪机械有限公司 | A kind of sewing machine feed wheel adjustment mechanism |
| CN108532135B (en) * | 2018-05-28 | 2023-11-24 | 池州市旭豪机械有限公司 | Feeding wheel adjusting mechanism of sewing machine |
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