CN215404891U - Crank feeding mechanism of sewing machine - Google Patents
Crank feeding mechanism of sewing machine Download PDFInfo
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- CN215404891U CN215404891U CN202121994915.0U CN202121994915U CN215404891U CN 215404891 U CN215404891 U CN 215404891U CN 202121994915 U CN202121994915 U CN 202121994915U CN 215404891 U CN215404891 U CN 215404891U
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- crank
- cloth feeding
- shaft
- motor
- sewing machine
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Abstract
The utility model belongs to the technical field of sewing machines, and relates to a crank feeding mechanism of a sewing machine, which comprises a main motor, a cloth feeding motor, a tooth frame and feeding teeth fixed on the upper end surface of the tooth frame, wherein the main motor is connected with one end of the tooth frame through a tooth lifting mechanism, the cloth feeding motor is connected with the other end of the tooth frame through a cloth feeding mechanism, the cloth feeding mechanism comprises a cloth feeding shaft, a cloth feeding swinging seat is fixed on the cloth feeding shaft, the cloth feeding swinging seat is hinged with one end of the tooth frame, an L-shaped crank is sleeved at one end of the cloth feeding shaft, a guide crank is sleeved on an output shaft of the cloth feeding motor, a T-shaped crank is arranged between the L-shaped crank and the guide crank, the guide crank is hinged with the T-shaped crank, and the L-shaped crank is fixedly connected with the T-shaped crank. The utility model provides a crank feeding mechanism of a sewing machine, which has simple structure, stable operation and high transmission accuracy.
Description
Technical Field
The utility model belongs to the technical field of sewing machines, and relates to a crank feeding mechanism of a sewing machine.
Background
The feeding mechanism of the sewing machine mainly comprises a tooth frame, feeding teeth fixedly arranged on the upper end surface of the middle of the tooth frame, a tooth lifting mechanism used for driving the tooth frame to do up-and-down reciprocating movement, a cloth feeding mechanism used for driving the tooth frame to do front-and-back reciprocating movement, and a motor used for driving the tooth lifting mechanism and the cloth feeding mechanism. At present, a motor, a tooth lifting mechanism and a cloth feeding mechanism mainly have two structures: the structure I is characterized in that a motor is used for simultaneously driving a feed lifting mechanism and a cloth feeding mechanism to realize a sewing function, the structure can realize sewing with different needle pitches through adjustment of a needle pitch mechanism, but only one sewing track can be realized; and the second structure is that two motors are used for respectively driving the tooth lifting mechanism and the cloth feeding mechanism, and the cloth feeding amount can be freely controlled, so that various patterns can be easily sewn. The existing cloth feeding mechanism has the defects of complex transmission structure, unstable operation and insufficient transmission accuracy.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the crank feeding mechanism of the sewing machine, which has the advantages of simple structure, stable operation and high transmission accuracy.
In order to solve the above technical problems, the object of the present invention is achieved by the following technical solutions:
a crank feeding mechanism of a sewing machine comprises a main motor, a cloth feeding motor, a tooth frame and feeding teeth fixed on the upper end face of the tooth frame, wherein the main motor is connected with one end of the tooth frame through a tooth lifting mechanism, the cloth feeding motor is connected with the other end of the tooth frame through the cloth feeding mechanism, the cloth feeding mechanism comprises a cloth feeding shaft, a cloth feeding swinging seat is fixed on the cloth feeding shaft, the cloth feeding swinging seat is hinged to one end of the tooth frame, an L-shaped crank is sleeved at one end of the cloth feeding shaft, a guide crank is sleeved on an output shaft of the cloth feeding motor, a T-shaped crank is arranged between the L-shaped crank and the guide crank, the guide crank is hinged to the T-shaped crank, and the L-shaped crank is fixedly connected with the T-shaped crank.
In the crank feeding mechanism of the sewing machine, the T-shaped crank comprises a crank sleeve and an insertion shaft, the insertion shaft is vertically connected to the middle of the crank sleeve, and the insertion shaft is arranged in parallel with an output shaft of the cloth feeding motor.
In the crank feeding mechanism of the sewing machine, the L-shaped crank comprises the crank sleeve and the insertion shaft which are vertically arranged, the crank sleeve is sleeved on the cloth feeding shaft, and the insertion shaft is inserted into the crank sleeve of the T-shaped crank.
In the above crank feeding mechanism of the sewing machine, the insertion shaft of the T-shaped crank is hinged to the guide crank, and one end of the L-shaped crank is inserted into and fixedly connected to the crank sleeve of the T-shaped crank.
In the crank feeding mechanism of the sewing machine, two ends of the L-shaped crank are respectively fastened and connected with the cloth feeding shaft and the T-shaped crank through a plurality of radial fixing pins, the T-shaped crank is rotatably connected with the guide crank through a sleeve or a bearing, and the guide crank is fastened and connected with an output shaft of the cloth feeding motor through a locking screw.
In the above crank feeding mechanism of a sewing machine, the cloth feeding motor is fixed in the sewing machine base through the motor bracket, a motor shaft of the cloth feeding motor is arranged towards the direction of the tooth frame, and the cloth feeding motor is preferably a stepping motor.
In the crank feeding mechanism of the sewing machine, a first cloth feeding sleeve is sleeved on one end, opposite to the cloth feeding motor, of the cloth feeding shaft, a second cloth feeding sleeve is sleeved on the cloth feeding shaft between the L-shaped crank and the cloth feeding swinging seat, and the cloth feeding shaft is rotatably supported in the sewing machine base through the first cloth feeding sleeve and the second cloth feeding sleeve.
In the crank feeding mechanism of the sewing machine, the output shaft of the main motor is in transmission connection with the main shaft, the main shaft is sleeved with the first synchronizing wheel, one end of the feed lifting shaft is sleeved with the second synchronizing wheel, the first synchronizing wheel and the second synchronizing wheel are in transmission connection through the synchronous belt, and the feed lifting shaft is rotatably supported in the sewing machine base through a bearing or a sleeve.
In the crank feeding mechanism of the sewing machine, a swing pin seat is sleeved at one end, opposite to the second synchronizing wheel, of the lifting tooth shaft, a swing pin is eccentrically arranged on the swing pin seat, the swing pin is hinged to the lifting tooth swing seat, the lifting tooth swing seat is hinged to the tooth frame, and the eccentric arrangement of the swing pin means that the axis of a pin shaft, hinged to the lifting tooth swing seat, of the swing pin is located at the eccentric position of the axis of the lifting tooth shaft.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model optimizes the transmission structure of the cloth feeding mechanism of the sewing machine, performs transmission through the L-shaped crank, the T-shaped crank and the guide crank which are connected with each other, further optimizes other cloth feeding mechanisms and feed lifting tooth mechanisms, and has the advantages of simple structure, stable operation and high transmission accuracy.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is another perspective view of the present invention;
FIG. 3 is a transmission structure diagram of the cloth feeding mechanism of the present invention;
reference numerals: 1. a main motor; 2. a cloth feeding motor; 3. a dental articulator; 4. feeding teeth; 5. a cloth feeding shaft; 6. a cloth feeding swing seat; 7. an L-shaped crank; 8. a guide crank; 9. a T-shaped crank; 10. a motor bracket; 11. a cloth feeding sleeve I; 12. a second cloth feeding sleeve; 13. a main shaft; 14. a first synchronizing wheel; 15. a feed lifting shaft; 16. a second synchronizing wheel; 17. a synchronous belt; 18. a rocking pin boss; 19. a swing pin; 20. and a swing seat for the lifting tooth.
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 crank feeding mechanism of a sewing machine comprises a main motor 1, a cloth feeding motor 2, a tooth frame 3 and feeding teeth 4 fixed on the upper end face of the tooth frame 3, wherein the main motor 1 is connected with one end of the tooth frame 3 through a tooth lifting mechanism, the cloth feeding motor 2 is connected with the other end of the tooth frame 3 through a cloth feeding mechanism, the cloth feeding mechanism comprises a cloth feeding shaft 5, a cloth feeding swing seat 6 is fixed on the cloth feeding shaft 5, the cloth feeding swing seat 6 is hinged to one end of the tooth frame 3, an L-shaped crank 7 is sleeved on one end of the cloth feeding shaft 5, a guide crank 8 is sleeved on an output shaft of the cloth feeding motor 2, a T-shaped crank 9 is arranged between the L-shaped crank 7 and the guide crank 8, the guide crank 8 is hinged to the T-shaped crank 9, and the L-shaped crank 7 is fixedly connected with the T-shaped crank 9.
The specific structure of the T-crank 9 in this embodiment is: the T-shaped crank 9 comprises a crank sleeve and an insertion shaft, the insertion shaft is vertically connected to the middle of the crank sleeve, and the insertion shaft is arranged in parallel with an output shaft of the cloth feeding motor 2.
The specific structure of the L-shaped crank 7 in this embodiment is: the L-shaped crank 7 comprises a crank sleeve and an insertion shaft which are vertically arranged, the crank sleeve is sleeved on the cloth feeding shaft 5, and the insertion shaft is inserted into the crank sleeve of the T-shaped crank 9.
The specific connection structure between each crank in this embodiment is: the inserting shaft of the T-shaped crank 9 is hinged with the guide crank 8, and one end of the L-shaped crank 7 is inserted into and fixedly connected with the crank sleeve of the T-shaped crank 9; furthermore, the two ends of the L-shaped crank 7 are respectively fastened and connected with the cloth feeding shaft 5 and the T-shaped crank 9 through a plurality of radial fixing pins, the T-shaped crank 9 is rotatably connected with the guide crank 8 through a sleeve or a bearing, and the guide crank 8 is fastened and connected with the output shaft of the cloth feeding motor 2 through a locking screw.
The cloth feeding motor 2 of the present embodiment is mounted in the following manner: the cloth feeding motor 2 is fixed in the sewing machine base through a motor support 10, a motor shaft of the cloth feeding motor 2 is arranged towards the direction of the tooth frame 3, and the cloth feeding motor 2 is preferably a stepping motor.
The cloth feed shaft 5 of the present embodiment is mounted in the following manner: one end of the cloth feeding shaft 5 opposite to the cloth feeding motor 2 is sleeved with a cloth feeding sleeve I11, a cloth feeding sleeve II 12 is sleeved on the cloth feeding shaft 5 between the L-shaped crank 7 and the cloth feeding swing seat 6, and the cloth feeding shaft 5 is rotatably supported in the sewing machine base through the cloth feeding sleeve I11 and the cloth feeding sleeve II 12.
The embodiment also optimizes the tooth lifting mechanism: the output shaft of the main motor 1 is in transmission connection with a main shaft 13, a first synchronizing wheel 14 is sleeved on the main shaft 13, a second synchronizing wheel 16 is sleeved at one end of a feed lifting shaft 15, the first synchronizing wheel 14 is in transmission connection with the second synchronizing wheel 16 through a synchronous belt 17, and the feed lifting shaft 15 is rotatably supported in a sewing machine base through a bearing or a sleeve.
Furthermore, a swing pin seat 18 is sleeved at one end, opposite to the second synchronizing wheel 16, of the feed lifting rock shaft 15, a swing pin 19 is eccentrically arranged on the swing pin seat 18, the swing pin 19 is hinged to the feed lifting rock swing seat 20, the feed lifting rock swing seat 20 is hinged to the tooth frame 3, and the eccentric arrangement of the swing pin 19 means that the axis of a pin shaft, hinged to the feed lifting rock swing seat 20, of the swing pin 19 is located at the eccentric position of the axis of the feed lifting rock shaft 15.
The specific working process is as follows: when the output shaft of the cloth feeding motor 2 rotates in a reciprocating manner within a certain angle range, the guide crank 8 rotates along with the output shaft, the cloth feeding shaft 5 is driven to rotate by the T-shaped crank 9 and the L-shaped crank when the guide crank 8 rotates, the cloth feeding swinging seat 6 is driven to swing when the cloth feeding shaft 5 rotates, and the tooth frame 3 is driven to swing back and forth when the cloth feeding swinging seat 6 swings; when the main motor 1 rotates circumferentially, the main shaft 13 rotates along with the main motor, the tooth lifting shaft 15 rotates along with the main motor through transmission of the synchronous belt pulley, the rotation of the tooth lifting shaft 15 drives the swing pin 19 to rotate eccentrically, the tooth lifting swing seat 20 swings up and down, the tooth frame 3 is driven to swing up and down, and the front and back swing and the up and down swing of the tooth frame 3 complete cloth feeding.
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 (8)
1. A crank feeding mechanism of a sewing machine comprises a main motor (1), a cloth feeding motor (2), a tooth frame (3) and feeding teeth (4) fixed on the upper end surface of the tooth frame (3), wherein the main motor (1) is connected with one end of the tooth frame (3) through a tooth lifting mechanism, the cloth feeding motor (2) is connected with the other end of the tooth frame (3) through a cloth feeding mechanism, the crank feeding mechanism is characterized in that the cloth feeding mechanism comprises a cloth feeding shaft (5), a cloth feeding swing seat (6) is fixed on the cloth feeding shaft (5), the cloth feeding swing seat (6) is hinged with one end of the tooth frame (3), an L-shaped crank (7) is sleeved at one end of the cloth feeding shaft (5), a guide crank (8) is sleeved on an output shaft of the cloth feeding motor (2), a T-shaped crank (9) is arranged between the L-shaped crank (7) and the guide crank (8), and the guide crank (8) is hinged with the T-shaped crank (9), the L-shaped crank (7) is fixedly connected with the T-shaped crank (9).
2. The crank feeding mechanism of a sewing machine according to claim 1, wherein the T-shaped crank (9) comprises a crank sleeve and an insertion shaft, the insertion shaft is vertically connected to the middle of the crank sleeve, and the insertion shaft is arranged in parallel with the output shaft of the cloth feeding motor (2).
3. The crank feeding mechanism of sewing machine according to claim 2, characterized in that the insertion shaft of the T-shaped crank (9) is hinged with the guide crank (8), and one end of the L-shaped crank (7) is inserted into and fixedly connected with the crank sleeve of the T-shaped crank (9).
4. The crank feeding mechanism of the sewing machine as claimed in claim 3, wherein the two ends of the L-shaped crank (7) are respectively fastened with the cloth feeding shaft (5) and the T-shaped crank (9) through a plurality of radial fixing pins, the T-shaped crank (9) is rotatably connected with the guide crank (8) through a sleeve or a bearing, and the guide crank (8) is fastened with the output shaft of the cloth feeding motor (2) through a locking screw.
5. The crank feeding mechanism of sewing machine according to claim 1, wherein the cloth feeding motor (2) is fixed in the sewing machine base through a motor bracket (10), and an output shaft of the cloth feeding motor (2) is arranged toward the direction of the tooth frame (3).
6. The crank feeding mechanism of the sewing machine as claimed in claim 1, wherein a first cloth feeding sleeve (11) is sleeved on one end of the cloth feeding shaft (5) opposite to the cloth feeding motor (2), a second cloth feeding sleeve (12) is sleeved on the cloth feeding shaft (5) between the L-shaped crank (7) and the cloth feeding swing base (6), and the cloth feeding shaft (5) is rotatably supported in the sewing machine base through the first cloth feeding sleeve (11) and the second cloth feeding sleeve (12).
7. The crank feeding mechanism of the sewing machine as claimed in claim 1, wherein the output shaft of the main motor (1) is in transmission connection with a main shaft (13), a first synchronizing wheel (14) is sleeved on the main shaft (13), a second synchronizing wheel (16) is sleeved at one end of the feed lifting shaft (15), and the first synchronizing wheel (14) and the second synchronizing wheel (16) are in transmission connection through a synchronous belt (17).
8. The crank feeding mechanism of the sewing machine as claimed in claim 7, wherein a swing pin seat (18) is sleeved on one end of the feed lifting rock shaft (15) opposite to the second synchronizing wheel (16), a swing pin (19) is eccentrically arranged on the swing pin seat (18), the swing pin (19) is hinged with the feed lifting rock swing seat (20), and the feed lifting rock swing seat (20) is hinged with the feed lifting rock rack (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121994915.0U CN215404891U (en) | 2021-08-23 | 2021-08-23 | Crank feeding mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121994915.0U CN215404891U (en) | 2021-08-23 | 2021-08-23 | Crank feeding mechanism of sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN215404891U true CN215404891U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121994915.0U Active CN215404891U (en) | 2021-08-23 | 2021-08-23 | Crank feeding mechanism of sewing machine |
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| CN (1) | CN215404891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960046A (en) * | 2022-06-17 | 2022-08-30 | 光宇针车(江西)有限公司 | Feeding device for industrial sewing machine |
-
2021
- 2021-08-23 CN CN202121994915.0U patent/CN215404891U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960046A (en) * | 2022-06-17 | 2022-08-30 | 光宇针车(江西)有限公司 | Feeding device for industrial sewing machine |
| CN114960046B (en) * | 2022-06-17 | 2023-09-12 | 光宇针车(江西)有限公司 | Material feeding unit for industrial sewing machine |
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