CN114775175A - Presser foot interactive quantity adjusting and presser foot lifting mechanism - Google Patents
Presser foot interactive quantity adjusting and presser foot lifting mechanism Download PDFInfo
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- CN114775175A CN114775175A CN202210600005.2A CN202210600005A CN114775175A CN 114775175 A CN114775175 A CN 114775175A CN 202210600005 A CN202210600005 A CN 202210600005A CN 114775175 A CN114775175 A CN 114775175A
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- presser foot
- crank
- foot lifting
- cam
- interaction
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention belongs to the technical field of sewing equipment, in particular to a presser foot interaction quantity adjusting and presser foot lifting mechanism; the presser foot lifting crank is respectively connected with the presser foot lifting shaft and the base circle or the cam surface in a contact way, the presser foot interaction quantity adjusting assembly is respectively connected with one end of the adjusting shaft and the presser foot assembly, and the other end of the adjusting shaft is connected with the driving cam through the adapter part; when the other end of the presser foot lifting crank is in contact connection with the base circular surface, the presser foot lifting assembly does not act, and the adapter component drives the presser foot interaction amount adjusting assembly to adjust the interaction amount along with the action of the driving cam; when the other end of the presser foot lifting crank is in contact connection with the cam surface, the presser foot lifting crank swings to drive the presser foot lifting assembly to lift the presser foot, and the interaction amount of the presser foot is changed from maximum to minimum; according to the invention, the drive motor and the drive cam are used for respectively realizing adjustment of the interaction quantity of the presser foot lifting and the presser foot, the structure is compact, and the production cost is effectively reduced.
Description
The technical field is as follows:
the invention belongs to the technical field of sewing equipment, and particularly relates to a presser foot interaction amount adjusting and presser foot lifting mechanism.
The background art comprises the following steps:
the presser foot of the sewing machine compresses the cloth before starting sewing, presses the cloth onto the cloth feeding teeth during sewing, and enables the teeth and the cloth to have enough friction force to convey the cloth, thereby ensuring normal sewing. When multilayer thick sewing materials are sewn, the feeding requirement cannot be met by feeding of the feed dog alone, the cloth slips and is not fed, so that the pressing foot feeding is realized by alternately arranging the inner pressing foot and the outer pressing foot, when the outer pressing foot is contacted with the feed dog for feeding, the inner pressing foot is lifted, and when the outer pressing foot is not contacted with the feed dog, the inner pressing foot is used for pressing, so that the pressing foot feeding is realized. When the sewing process includes the steps of folding the cloth in multiple layers, wherein the thickness of one section of the cloth is inconsistent, the height difference forms the steps, and the relative height of the inner presser foot and the outer presser foot, namely the interaction amount, needs to be adjusted when the presser foot needs to pass through the steps, so that the outer presser foot can step through the steps to realize normal sewing.
The Chinese invention patent (grant publication No. CN 113279156A, published as 2021.08.20) discloses a mechanism for adjusting interaction quantity of press feet of a comprehensive thick material feeding machine and rapidly switching. The above patent documents disclose a mechanism for adjusting the interaction amount of the presser foot by using an air cylinder or an electromagnet or an oil cylinder as a driver, which cannot be accurately adjusted. In addition, when an automatic presser foot lifting mechanism needs to be arranged, an additional presser foot lifting mechanism needs to be arranged for realizing the automatic presser foot lifting mechanism, so that the whole machine is complex in structure and high in cost.
The invention content is as follows:
the invention aims to provide a presser foot interaction amount adjusting and presser foot lifting mechanism which is compact in structure, effectively reduces production cost and is high in control accuracy.
The invention is realized by the following steps:
a presser foot interaction amount adjusting and presser foot lifting mechanism comprises a driving motor, a driving cam, a presser foot lifting assembly, a presser foot interaction amount adjusting assembly and a presser foot assembly, wherein the driving cam is driven by the driving motor to rotate and comprises a base circle part and a cam part, the base circle part comprises a base circle surface, and the cam part comprises a cam surface; the input end of the presser foot lifting assembly is connected with the presser foot lifting shaft, the output end of the presser foot lifting assembly is connected with the presser foot assembly, one end of the presser foot lifting crank is fixedly connected with the presser foot lifting shaft, and the other end of the presser foot lifting crank is in contact connection with the base circle surface or the cam surface of the driving cam; the input end of the presser foot interaction amount adjusting assembly is connected with one end of the adjusting shaft, the output end of the presser foot interaction amount adjusting assembly is connected with the presser foot assembly, the other end of the adjusting shaft is connected with the driving cam through the adapter part, and the adapter part is eccentrically connected to the base circle part of the driving cam; the drive motor drives the drive cam to rotate, when the other end of the presser foot lifting crank is in contact connection with the base circular surface, the presser foot lifting assembly does not act, and the adapter part drives the presser foot interaction amount adjusting assembly to adjust the interaction amount along with the action of the drive cam; when the other end of the presser foot lifting crank is in contact connection with the cam surface, the presser foot lifting crank swings to drive the presser foot lifting assembly to lift the presser foot, and the interaction amount of the presser foot is changed from maximum to minimum.
In the presser foot interaction amount adjusting and presser foot lifting mechanism, the presser foot assembly comprises a triangular plate, an inner presser foot component and an outer presser foot component, the first connecting end of the triangular plate is connected with the input ends of the outer presser foot component and the presser foot lifting component, the second connecting end is connected with the inner presser foot component, and the third connecting end is connected with the output end of the presser foot interaction amount adjusting assembly.
In the presser foot interaction amount adjusting and presser foot lifting mechanism, the adapting component comprises an interaction amount adjusting crank and an interaction amount adjusting connecting rod, one end of the interaction amount adjusting crank is fixedly connected with the adjusting shaft, the other end of the interaction amount adjusting crank is connected with one end of the interaction amount adjusting connecting rod, and the other end of the interaction amount adjusting connecting rod is rotatably connected to the end face of the base circle part through a screw.
In the presser foot interaction amount adjusting and presser foot lifting mechanism, the other end of the presser foot lifting crank is provided with a swing rod roller or a bearing or a roller, and the swing rod roller or the bearing or the roller is in contact connection with the base circle surface and the cam surface of the driving cam.
In the presser foot interaction amount adjusting and presser foot lifting mechanism, the outer end of the cam portion is provided with a concentric circle portion concentrically arranged with the base circle portion, and the concentric circle portion includes a concentric circle surface.
In the presser foot interaction amount adjusting and presser foot lifting mechanism, the connecting end of the cam surface and the base circular surface and the outer end part of the concentric circular surface are located at the zero position.
In the presser foot interaction amount adjusting and presser foot lifting mechanism, the driving motor is a stepping motor.
In the presser foot interactive quantity adjusting and lifting mechanism, the presser foot lifting assembly comprises a presser foot pressing plate, one end of the presser foot pressing plate is fixedly connected with a presser foot lifting shaft, the other end of the presser foot pressing plate is provided with a first pin shaft, the first connecting end of the external presser foot component and the triangular plate is hinged with the first pin shaft, the other end of the presser foot pressing plate is provided with a pressing plate part, a reset rod is arranged above the pressing plate part, the reset rod is sleeved with a reset spring, the lower end of the reset rod penetrates through the lower spring baffle and is limited below the lower spring baffle, the upper end of the reset rod is provided with an upper spring baffle, the two ends of the reset spring respectively abut against the upper spring baffle and the lower spring baffle, the lower spring baffle abuts against the pressing plate part under the action of the reset spring, a through hole for the lower end of the reset rod to penetrate is formed in the pressing plate part, and the reset spring drives the presser foot pressing plate to reset.
In the presser foot interaction amount adjusting and presser foot lifting mechanism, the outer presser foot component is hinged to one end of a first hinge component, the other end of the first hinge component is hinged to a first pin shaft, and a second connecting end of the triangular plate is hinged to the inner presser foot component through a second hinge component.
Compared with the prior art, the invention has the outstanding advantages that:
1. according to the invention, the adjustment of the mutual quantity of the presser foot lifting and the presser foot is respectively realized by the driving motor and the driving cam, the structure is compact, the automation and the intellectualization are realized, and the production cost is effectively reduced;
2. the controller controls the clockwise and anticlockwise rotation angles of the output shaft of the driving motor, so that the height and the interaction amount of the pressure raising foot can be controlled, the precision is high, and the sewing occasions of fabrics with different thicknesses and different materials can be met.
Description of the drawings:
FIG. 1 is one of the schematic perspective views of the pendulum roller of the present invention in the zero position;
FIG. 2 is a second schematic perspective view of the pendulum roller of the present invention in a zero position;
FIG. 3 is one of the schematic perspective views of the rocker roller of the present invention in a foot lift condition;
FIG. 4 is a second schematic perspective view of the rocker roller of the present invention in a pressure foot raising position;
FIG. 5 is a perspective view of the drive cam of the present invention;
FIG. 6 is a front view of the drive cam of the present invention;
FIG. 7 is a schematic view of a set square of the present invention.
In the figure: 1. a drive motor; 2. a drive cam; 3. a presser foot lifting assembly; 4. a presser foot interaction amount adjusting assembly; 5. an external presser foot member; 6. an inner presser foot member; 7. a set square; 8. a first connection end; 9. a second connection end; 10. a base circle portion; 11. a cam portion; 12. a base circle surface; 13. a cam surface; 14. a presser foot lift shaft; 15. lifting a presser foot crank; 16. an adjustment shaft; 17. a third connection end; 18. an interaction amount adjustment crank; 19. an interaction amount adjusting link; 20. a swing rod roller; 21. a concentric circle portion; 22. a concentric circular surface; 23. a cam bearing housing; 24. a screw; 25. a knuckle bearing; 26. pressing a presser foot plate; 27. a reset lever; 28. a return spring; 29. a lower spring baffle; 30. an upper spring baffle plate; 31. a pressing plate portion; 32. a first hinge member; 33. a second hinge member; 34. a swing bracket; 35. a first crank; 36. a second crank; 37. a third crank; 38. a second pin shaft; 39. a first link; 40. a second link; 41. a presser foot shaft; 42. a swing lever.
The specific implementation mode is as follows:
the invention will now be further described by way of specific examples, with reference to figures 1 to 7:
the invention provides a presser foot interaction amount adjusting and presser foot lifting mechanism, which comprises a driving motor 1, a driving cam 2, a presser foot lifting assembly 3, a presser foot interaction amount adjusting assembly 4 and a presser foot assembly, wherein in the embodiment, the presser foot assembly comprises a triangular plate 7, an outer presser foot component 5 and an inner presser foot component 6, the outer presser foot component 5 and the inner presser foot component 6 are respectively connected to a first connecting end 8 and a second connecting end 9 of the triangular plate 7, the driving cam 2 is arranged on an output shaft of the driving motor 1, the driving cam 2 comprises a base circle part 10 and a cam part 11, the base circle part 10 comprises a base circle surface 12, and the cam part 11 comprises a cam surface 13; the input end of the presser foot lifting assembly 3 is connected with a presser foot lifting shaft 14, the output end of the presser foot lifting assembly is connected with a first connecting end 8 of a triangular plate 7 of the presser foot assembly, one end of a presser foot lifting crank 15 is arranged on the presser foot lifting shaft 14, and the other end of the presser foot lifting crank is in contact connection with a base circular surface 12 or a cam surface 13 of the driving cam 2; the input end of the presser foot interaction amount adjusting assembly 4 is connected with an adjusting shaft 16, the output end of the presser foot interaction amount adjusting assembly is connected with a third connecting end 17 of the triangular plate 7, the adjusting shaft 16 is connected with the driving cam 2 through a switching component, and the switching component is eccentrically connected to a base circle portion 10 of the driving cam 2. The switching component comprises an interaction quantity adjusting crank and an interaction quantity adjusting connecting rod 19, one end of the interaction quantity adjusting crank 18 is fixedly connected with the adjusting shaft 16, the other end of the interaction quantity adjusting crank is connected with one end of the interaction quantity adjusting connecting rod 19, and the other end of the interaction quantity adjusting connecting rod 19 is rotatably connected to the end face of the base circle portion 10 through a screw 24. The driving motor 1 of the invention can be a stepping motor or a servo motor. In the present embodiment, a stepping motor is preferable.
The invention respectively realizes the adjustment of the interaction quantity of the presser foot lifting and the presser foot through one motor, and has compact structure. The stepping motor is used for driving, so that the height of the pressure foot can be accurately controlled, and the interaction amount can be accurately adjusted.
The drive motor 1 is controlled by a controller to act, the drive motor 1 drives the drive cam 2 to rotate, when the other end of the presser foot lifting crank 15 is in contact connection with the base circular surface 12 of the drive cam 2, the presser foot lifting crank 15 cannot swing due to the equal radius of the base circular surface 12, so that the presser foot lifting shaft 14 cannot swing, finally, the presser foot lifting assembly 3 does not act, and the outer presser foot component 5 and the inner presser foot component 6 do not perform the presser foot lifting action. At this time, the interaction amount adjusting link 19 rotates with the driving cam 2, and drives the adjusting shaft 16 to operate, thereby driving the presser interaction amount adjusting assembly 4 to operate and adjust the interaction amount of the outer presser member 5 and the inner presser member 6. When the other end of the presser foot lifting crank 15 is in contact connection with the cam surface 13 of the driving cam 2, the presser foot lifting crank 15 drives the presser foot lifting crank 15 to swing under the action of different diameters on the cam surface 13, and further drives the presser foot lifting shaft 14 to swing to drive the presser foot lifting assembly 3, so that the function of lifting the presser foot is achieved (namely the outer presser foot component 5 and the inner presser foot component 6 are lifted simultaneously), the presser foot lifting height is ensured, and the presser foot interaction amount is changed from maximum to minimum.
Specifically, in the present embodiment, when the output shaft of the driving motor 1 rotates clockwise, the base circular surface 12 of the driving cam 2 is in contact connection with the other end of the presser foot lifting crank 15, and at this time, the presser foot interaction amount is adjusted. When the output shaft of the driving motor 1 rotates counterclockwise, the cam surface 13 of the driving cam 2 contacts and connects with the other end of the presser foot lifting crank 15, and at this time, the presser foot lifting action is performed.
Further, in order to make the driving cam 2 rotate flexibly, the other end of the pressure raising and pressing foot crank 15 is provided with a rocker roller 20 or a bearing or a roller, and the rocker roller 20 or the bearing or the roller is in contact connection with the base circular surface 12 and the cam surface 13 of the driving cam 2. When the drive cam 2 rotates, the rocker roller 20 or the bearing or the roller rolls on the base circle 12 or the cam surface 13.
As shown in fig. 5 and 6, the outer end of the cam portion 11 is provided with a concentric circular portion 21 disposed concentrically with the base circular portion 10, and the concentric circular portion 21 includes a concentric circular surface 22. One end of the concentric circular surface 22 is connected to the end of the cam surface 13. The connecting end of the cam surface 13 and the base circular surface 12 and the outer end of the concentric circular surface 22 are located at the zero position. The present invention provides the concentric circular portion 21 to reduce the output torque of the drive motor 1. When the rocker roller 20 abuts on the concentric circular surface 22, the rocker roller 20 does not fall down even if the motor does not output.
As shown in fig. 6, the base circular surface 12 of the present invention has an arc of 180 °. The outer end of the concentric circular portion 21 is taken as a zero position. The cam surface 13 has an end point at the connection with the base circular surface 12 and an end point at the connection with the base circular surface, and has a radius gradually increasing from the start point to the end point. The presser foot lifting mechanism rotates anticlockwise, the interaction amount of the presser foot is adjusted within 0-180 degrees, and the presser foot lifting mechanism rotates clockwise by 170 degrees to control the action of the presser foot lifting mechanism.
As shown in fig. 1 to 4, the output shaft of the driving motor 1 is provided with a cam bearing sleeve 23 and a driving cam 2 in this order along the axial direction. The cam bearing sleeve 23 and the driving cam 2 can be of an integrated structure, and during installation, the driving cam 2 is fixedly connected with an output shaft of the driving motor 1 through the cam bearing sleeve 23. In the present embodiment, the cam bearing sleeve 23 and the drive cam 2 are formed in a split structure for the sake of convenience in processing. The cam bearing sleeve 23 and the drive cam 2 are connected by an axially and eccentrically arranged screw 24. The screw 24 is also used for the connection of the interaction amount adjusting link 19 to the drive cam 2. In order to make the rotation flexible, a joint bearing 25 is provided between the screw 24 and one end of the interaction amount adjusting link 19.
As shown in fig. 1-4, the driving motor 1 is disposed on the casing through a motor mounting plate 26, an output shaft through hole is disposed on the motor mounting plate 26, the output shaft of the driving motor 1 passes through the output shaft through hole and extends out of the motor mounting plate 26, the cam bearing sleeve 23 and the driving cam 2 are disposed at the outer end of the output shaft, and a bearing is disposed between the output shaft and the output shaft through hole.
Specifically, the presser foot lifting assembly 3 has the following structure: the presser foot lifting mechanism comprises a presser foot pressing plate 26, wherein one end of the presser foot pressing plate 26 is fixedly connected with a presser foot lifting shaft 14, the other end of the presser foot pressing plate 26 is provided with a first pin shaft, a first connecting end 8 of an outer presser foot component 5 and a triangular plate 7 are hinged to the first pin shaft, the other end of the presser foot pressing plate 26 is provided with a pressing plate part 31, a reset rod 27 is arranged above the pressing plate part 31, a reset spring 28 is sleeved on the reset rod 27, the lower end of the reset rod 27 penetrates through a lower spring baffle 29 and is limited below the lower spring baffle 29, an upper spring baffle 30 is arranged at the upper end of the reset rod 27, two ends of the reset spring 28 are respectively pressed against the lower spring baffle 29 and the upper spring baffle 30, the lower spring baffle 29 is abutted against the pressing plate part 31 under the action of the reset spring 28, a through hole for the lower end of the reset rod to penetrate is arranged on the pressing plate part, and the reset spring 28 drives the presser foot pressing plate 26 to reset. The other end of the presser foot lifting crank 15 or the rocker roller 20 can be always in contact connection with the drive cam 2 under the action of the return spring 28.
Further, the outer presser foot component 5 is hinged to one end of a first hinge 32, the other end of the first hinge 32 is hinged to a first pin, and the second connection end 9 of the triangle 7 is hinged to the inner presser foot component 6 through a second hinge 33.
Specifically, the presser foot interaction amount adjusting assembly 4 has the following structure: comprises a swing bracket 34, a first crank 35, a second crank 36 and a third crank 37, wherein the swing bracket 34 comprises a first support arm and a second support arm, the first support arm is fixedly connected with the adjusting shaft 16, the second support arm is connected on the machine shell in a swinging way through a second pin shaft 38, the adjacent side walls of the first support arm and the second support arm are respectively hinged with a first connecting rod 39 and a second connecting rod 40, the other ends of the first connecting rod 39 and the second connecting rod 40 are hinged on a third pin shaft, one end of the first crank 35 is hinged with the third pin shaft, the other end is fixedly connected with one end of the presser foot shaft 41, the other end of the presser foot shaft 41 is connected with the second crank 36, the other end of the second crank 36 is hinged with one end of the swinging rod 42, the other end of the swinging rod 42 is hinged with the third connecting end 17 of the triangular plate 7, one end of the third crank 35 is hinged with the third pin shaft, and the other end of the third crank is fixedly connected with the main shaft.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: equivalent changes made according to the shape, structure and principle of the invention are all covered by the protection scope of the invention.
Claims (10)
1. The utility model provides a presser foot mutual volume is adjusted and is lifted presser foot mechanism, includes driving motor (1), driving cam (2), presser foot lifting unit (3), presser foot mutual volume adjusting part (4), presser foot subassembly, driving cam (2) are driven by driving motor (1) and are rotated its characterized in that: the drive cam (2) comprises a base circle part (10) and a cam part (11), the base circle part (10) comprises a base circle surface (12), and the cam part (11) comprises a cam surface (13); the input end of the presser foot lifting assembly (3) is connected with the presser foot lifting shaft (14), the output end of the presser foot lifting assembly is connected with the presser foot assembly, one end of a presser foot lifting crank (15) is fixedly connected with the presser foot lifting shaft (14), and the other end of the presser foot lifting crank is in contact connection with the base circular surface (12) or the cam surface (13) of the driving cam (2); the input end of the presser foot interaction amount adjusting component (4) is connected with one end of an adjusting shaft (16), the output end of the presser foot interaction amount adjusting component is connected with the presser foot component, the other end of the adjusting shaft (16) is connected with the driving cam (2) through a switching component, and the switching component is eccentrically connected to a base circle part (10) of the driving cam (2); the pressing foot lifting component (3) does not act when the other end of the pressing foot lifting crank (15) is in contact connection with the base circular surface (12), and the switching component drives the pressing foot interaction amount adjusting component (4) to adjust the interaction amount along with the action of the driving cam (2); when the other end of the presser foot lifting crank (15) is in contact connection with the cam surface (13), the presser foot lifting crank (15) swings to drive the presser foot lifting assembly (3) to lift the presser foot, and the interaction amount of the presser foot is changed from maximum to minimum.
2. The presser foot interaction amount adjustment and presser foot lifting mechanism according to claim 1, wherein: the presser foot component comprises a triangular plate (7), an inner presser foot component (6) and an outer presser foot component (5), wherein a first connecting end (8) of the triangular plate (7) is connected with input ends of the outer presser foot component (5) and the presser foot lifting component (3), a second connecting end (9) is connected with the inner presser foot component (6), and a third connecting end (17) is connected with an output end of the presser foot interaction amount adjusting component (4).
3. A presser foot interaction amount adjustment and presser foot lifting mechanism according to claim 1 or 2, characterized in that: the switching component comprises an interaction quantity adjusting crank (18) and an interaction quantity adjusting connecting rod (19), one end of the interaction quantity adjusting crank (18) is fixedly connected with the adjusting shaft (16), the other end of the interaction quantity adjusting crank is connected with one end of the interaction quantity adjusting connecting rod (19), and the other end of the interaction quantity adjusting connecting rod (19) is rotatably connected to the end face of the base circle portion (10) through a screw.
4. A presser foot interaction amount adjustment and presser foot lifting mechanism according to claim 1 or 2, characterized in that: the other end of the pressure foot lifting crank (15) is provided with a swing rod roller (20) or a bearing or a roller, and the swing rod roller (20) or the bearing or the roller is in contact connection with the base circle surface (12) and the cam surface (13) of the driving cam (2).
5. A presser foot interaction amount adjustment and presser foot lifting mechanism according to claim 1 or 2, characterized in that: the outer end of the cam part (11) is provided with a concentric circle part (21) which is concentric with the base circle part (10), and the concentric circle part (21) comprises a concentric circle surface (22).
6. The presser foot interaction amount adjustment and presser foot lifting mechanism according to claim 5, wherein: the connecting end of the cam surface (13) and the base circular surface (12) and the outer end part of the concentric circular surface (22) are positioned at zero positions.
7. A presser foot interaction amount adjusting and presser foot lifting mechanism according to claim 1 or 2, characterized in that: the driving motor (1) is a stepping motor.
8. A presser foot interaction amount adjustment and presser foot lifting mechanism according to claim 2, characterized in that: the presser foot lifting assembly (3) comprises a presser foot pressing plate (26), one end of the presser foot pressing plate (26) is fixedly connected with a presser foot lifting shaft (14), the other end of the presser foot pressing plate (26) is provided with a first pin shaft, a first connecting end (8) of an outer presser foot component (5) and a triangular plate (7) is hinged with the first pin shaft, the other end of the presser foot pressing plate (26) is provided with a pressing plate part (31), a reset rod (27) is arranged above the pressing plate part (31), the reset rod (27) is sleeved with a reset spring (28), the lower end of the reset rod penetrates through a lower spring baffle plate (29) and is limited below the lower spring baffle plate (29), the upper end of the reset rod is provided with an upper spring baffle plate (30), two ends of the reset spring (28) respectively prop against the upper spring baffle plate (30) and the lower spring baffle plate (29), the lower spring baffle plate (29) is abutted against the pressing plate (31) under the action of the reset spring (28), the pressure plate part (31) is provided with a through hole for the lower end of the reset rod (27) to pass through, and the reset spring (28) drives the pressure foot pressure plate (26) to reset.
9. The presser foot interaction volume adjustment and presser foot lifting mechanism of claim 8, wherein: the outer presser foot component (5) is hinged to one end of a first hinge piece (32), the other end of the first hinge piece (32) is hinged to a first pin shaft, and a second connecting end (9) of the triangular plate (7) is hinged to the inner presser foot component (6) through a second hinge piece (33).
10. A presser foot interaction amount adjustment and presser foot lifting mechanism according to claim 2, characterized in that: the presser foot interactive quantity adjusting assembly (4) comprises a swinging support (34), a first crank (35), a second crank (36) and a third crank (37), wherein the swinging support (34) comprises a first support arm and a second support arm, the first support arm is fixedly connected with an adjusting shaft (16), the second support arm is connected to the shell in a swinging mode through a second pin shaft (38), a first connecting rod (39) and a second connecting rod (40) are respectively hinged to the adjacent side walls of the first support arm and the second support arm, the other ends of the first connecting rod (39) and the second connecting rod (40) are hinged to the third pin shaft, one end of the first crank (35) is hinged to the third pin shaft, the other end of the first crank is fixedly connected with one end of a presser foot shaft (41), the other end of the presser foot shaft (41) is connected with the second crank (36), the other end of the second crank (36) is hinged to one end of a swinging rod (42), the other end of the swinging rod (42) is hinged with a third connecting end (17) of the triangular plate (7), one end of a third crank (36) is hinged with a third pin shaft, and the other end of the third crank is fixedly connected with the main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600005.2A CN114775175A (en) | 2022-05-26 | 2022-05-26 | Presser foot interactive quantity adjusting and presser foot lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600005.2A CN114775175A (en) | 2022-05-26 | 2022-05-26 | Presser foot interactive quantity adjusting and presser foot lifting mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN114775175A true CN114775175A (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210600005.2A Pending CN114775175A (en) | 2022-05-26 | 2022-05-26 | Presser foot interactive quantity adjusting and presser foot lifting mechanism |
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| Country | Link |
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| CN (1) | CN114775175A (en) |
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- 2022-05-26 CN CN202210600005.2A patent/CN114775175A/en active Pending
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