CN219045018U - Pneumatic interaction quantity fast switching mechanism - Google Patents
Pneumatic interaction quantity fast switching mechanism Download PDFInfo
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- CN219045018U CN219045018U CN202223612807.XU CN202223612807U CN219045018U CN 219045018 U CN219045018 U CN 219045018U CN 202223612807 U CN202223612807 U CN 202223612807U CN 219045018 U CN219045018 U CN 219045018U
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- presser foot
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- switching mechanism
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- connecting rod
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Abstract
The utility model belongs to the technical field of sewing machines, in particular to a pneumatic interaction quantity quick switching mechanism; the automatic presser foot lifting device comprises an inner presser foot, an outer presser foot and a cylinder, wherein the upper end of the cylinder is connected with a cylinder support, the lower end of the cylinder is a piston rod, the outer end of the piston rod is provided with a cylinder joint, a chute seat is arranged on the cylinder joint, a chute is arranged on the chute seat, one end of an eccentric connecting rod adjusting crank is arranged in the chute in a sliding manner, the other end of the eccentric connecting rod adjusting crank is connected with the cylinder support and is arranged on a presser foot lifting shaft, the cylinder joint is also connected with a presser foot swinging shaft through an eccentric connecting rod assembly, the presser foot lifting shaft is connected with one end of the presser foot lifting crank, and the other end of the presser foot lifting crank is connected with an inner presser foot component and an outer presser foot component; according to the utility model, the quick switching of the interaction quantity is realized through the extension and contraction of the piston rod of the air cylinder, and the switching is quick and convenient, so that the normal and orderly execution of the sewing work is ensured.
Description
Technical field:
the utility model belongs to the technical field of sewing machines, and particularly relates to a pneumatic interaction quantity quick switching mechanism.
The background technology is as follows:
the presser foot of the sewing machine presses the cloth before starting the sewing and presses the cloth to the teeth of the cloth feeding during the sewing, so that the teeth and the cloth have enough friction force to convey the cloth, and the normal sewing is ensured. When a plurality of layers of thicker sewing materials are sewn, the feeding requirement cannot be met by singly relying on the cloth feeding teeth, the conditions that cloth slips and the cloth is fed still can occur, so that the feeding of the presser foot needs to be realized by alternately arranging the inner presser foot and the outer presser foot, when the outer presser foot is contacted with the cloth feeding teeth to feed together, the inner presser foot is lifted, and when the outer presser foot is not contacted with the cloth feeding teeth, the inner presser foot is pressed, so that the feeding of the presser foot is realized. When the cloth is folded for multiple layers in the sewing process, the thickness of one section of cloth is inconsistent, the height difference forms a step, the relative height of the inner presser foot and the outer presser foot is required to be adjusted when the presser foot passes through the step, namely the interaction quantity, so that the outer presser foot can pass through the step, and the sewing is normal. At present, the switching structure of presser foot interaction quantity in the market is various.
The utility model comprises the following steps:
the utility model aims to provide a pneumatic interaction quantity rapid switching mechanism which is compact in structure and convenient to switch.
The utility model is realized in the following way:
the utility model provides a pneumatic interaction volume quick switch mechanism, includes outer presser foot, interior presser foot and cylinder, the upper end and the cylinder leg joint of cylinder, lower extreme are the piston rod, and the outer end of piston rod is provided with the cylinder and connects, be provided with the spout seat on the cylinder connects, be provided with the spout on the spout seat, eccentric link adjusts the cranked one end and slides to establish in the spout, the other end and cylinder leg joint and set up on the presser foot lift shaft, the cylinder connects still to be connected with the presser foot oscillating axle through eccentric wheel link assembly, the presser foot lift shaft is connected with the cranked one end of presser foot lift, and the cranked other end of presser foot lift is connected with outer presser foot, interior presser foot.
In the pneumatic interaction quantity quick switching mechanism, the cylinder support is provided with the strip-shaped holes arranged in the vertical direction, one end of the threaded pin is arranged in the strip-shaped holes, and the other end of the threaded pin is connected with the cylinder.
In the pneumatic interaction quantity quick switching mechanism, the mounting plate is arranged at the lower end of the cylinder support, the other end of the eccentric link rod adjusting crank is provided with the presser foot lifting shaft hole and the open slot which is radially communicated with the presser foot lifting shaft hole, and the screw sequentially penetrates through the mounting plate and the open slot to be in threaded connection with the other end of the eccentric link rod adjusting crank, so that the connection between the eccentric link rod adjusting crank and the mounting plate and the connection between the eccentric link rod adjusting crank and the presser foot lifting shaft are realized.
In the pneumatic interaction quantity quick switching mechanism, the upper end of the air cylinder is provided with the air cylinder upper joint, and the other end of the threaded pin is connected with the air cylinder upper joint.
In the pneumatic interaction quantity quick switching mechanism, the cylinder joint comprises two side arms arranged at intervals, the chute seat is provided with the connecting pin, and the connecting pin is arranged on the two side arms in a penetrating manner.
In the pneumatic interaction quantity quick switching mechanism, the eccentric wheel connecting rod assembly comprises a connecting rod and an eccentric wheel, one end of the connecting rod is connected to a connecting pin between two side arms, and the other end of the connecting rod is connected with the presser foot swinging shaft through the eccentric wheel.
In the pneumatic interaction quantity quick switching mechanism, a needle bearing is arranged between the connecting pin and one end of the connecting rod.
In the pneumatic interaction quantity quick switching mechanism, one end of the eccentric connecting rod adjusting crank extends out of the chute seat, and a limit screw is arranged at the extending end.
Compared with the prior art, the utility model has the outstanding advantages that:
1. according to the utility model, the quick switching of the interaction quantity is realized through the extension and contraction of the piston rod of the air cylinder, and the switching is quick and convenient, so that the normal and orderly operation of the sewing work is ensured;
2. the utility model can set the initial interaction value by adjusting the position of the threaded pin in the bar-shaped hole.
Description of the drawings:
FIG. 1 is one of the perspective views of the present utility model;
FIG. 2 is a second perspective view of the present utility model;
FIG. 3 is a third perspective view of the present utility model;
fig. 4 is a schematic view of the cylinder bracket of the present utility model.
In the figure: 1. an outer presser foot; 2. an inner presser foot; 3. a cylinder; 4. a cylinder bracket; 5. a piston rod; 6. a cylinder joint; 7. a chute seat; 8. an eccentric connecting rod adjusting crank; 9. a presser foot lifting shaft; 10. a presser foot swing shaft; 11. a presser foot lifting crank; 12. a bar-shaped hole; 13. a threaded pin; 14. a mounting plate; 15. a screw; 16. an upper joint of the air cylinder; 17. a connecting rod; 18. an eccentric wheel; 19. a limit screw; 20. a presser foot feeding crank connecting rod; 21. a presser foot feeding crank; 22. a presser foot connecting rod; 23. a hold-down bar guide; 24. and a pressing rod.
The specific embodiment is as follows:
the utility model is further described below with reference to the specific examples, see fig. 1-4:
the utility model provides a pneumatic interaction quantity quick switching mechanism which comprises an outer presser foot 1, an inner presser foot 2 and a cylinder 3, wherein the upper end of the cylinder 3 is connected with a cylinder bracket 4, the lower end of the cylinder is a piston rod 5, the outer end of the piston rod 5 is provided with a cylinder joint 6, the cylinder joint 6 is provided with a chute seat 7, the chute seat 7 is provided with a chute, one end of an eccentric link adjusting crank 8 is slidably arranged in the chute of the chute seat 7, the other end of the eccentric link adjusting crank 8 is connected with the cylinder bracket 4 and is arranged on a presser foot lifting shaft 9, the cylinder joint 6 is also connected with a presser foot swinging shaft 10 through an eccentric wheel link assembly, the lifting shaft 9 is connected with one end of a presser foot lifting crank 11, the other end of the lifting crank 11 is hinged with one end of a presser foot crank link 20, the other end of the presser foot feeding crank link 20 is hinged with a first end of a presser foot feeding crank 21, the second end of the presser foot crank 21 is connected with the outer presser foot 1 through a presser foot link 22, the third end of the presser foot crank 21 is connected with a pressing bar 24 through a pressing bar guide 23, and the lower end of the pressing bar 24 is provided with the inner presser foot 2.
In the inactive state of the cylinder 3, the piston rod 5 of the cylinder 3 is extended into position. At this time, the chute seat 7 is at the largest distance from the presser foot lifting shaft 9. When the interaction amount is required to be switched, only the piston rod 5 of the air cylinder 3 is controlled to retract through the controller, and the chute seat 7 is driven to move upwards along the eccentric connecting rod adjusting crank 8 until the distance from the presser foot lifting shaft 9 is minimum. At this time, the larger the swing amplitude of the presser foot lifting crank 11 is, the quick switching of the interaction amount is realized.
The utility model realizes the rapid switching of the interaction quantity through the extension and contraction of the piston rod of the air cylinder 3, and has compact structure and rapid and convenient switching.
Further, the cylinder bracket 4 is provided with a bar-shaped hole 12 arranged in the up-down direction, and one end of a threaded pin 13 is arranged in the bar-shaped hole 12, and the other end is connected with the cylinder 3.
By adjusting the position of the threaded pin 13 within the bar-shaped hole 12, an initial interaction magnitude can be set.
In order to facilitate disassembly and assembly, the lower end of the cylinder bracket 4 is provided with a mounting plate 14, the other end of the eccentric link adjusting crank 8 is provided with a presser foot lifting shaft hole and an open slot which is radially communicated with the presser foot lifting shaft hole, and a screw 15 sequentially penetrates through the mounting plate and the open slot to be screwed on the other end of the eccentric link adjusting crank 8, so that the connection between the eccentric link adjusting crank 8 and the mounting plate 14 and the connection between the eccentric link adjusting crank 8 and the presser foot lifting shaft 9 are realized. That is, the connection of the eccentric link adjusting crank 8 and the presser foot lifting shaft 9, and the connection of the eccentric link adjusting crank 8 and the cylinder bracket 4 are realized by only one screw 15, so that the structure is compact and the assembly is simplified.
Further, an upper end of the cylinder 3 is provided with a cylinder upper joint 16, and the other end of the threaded pin 13 is connected with the cylinder upper joint 16. The cylinder upper joint 16 is fixedly arranged at the top end of the cylinder 3 through a screw.
In the present utility model, the cylinder joint 7 includes two side arms disposed at intervals, and the chute base 8 is provided with a connecting pin, and the connecting pin is disposed on the two side arms in a penetrating manner.
The eccentric wheel connecting rod assembly comprises a connecting rod 17 and an eccentric wheel 18, one end of the connecting rod 17 is connected to a connecting pin between two side arms, and the other end of the connecting rod is connected with the presser foot swinging shaft 10 through the eccentric wheel 18.
In order to make the rotation flexible, a needle bearing is provided between the connecting pin and one end of the connecting rod 17.
In order to prevent the eccentric link adjusting crank 8 from being separated from the chute seat 7, one end of the eccentric link adjusting crank 8 protrudes out of the chute seat 7 and is provided with a limit screw 19 at the protruding end.
The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model, therefore: all equivalent changes in shape, structure and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. A pneumatic interaction quantity fast switching mechanism is characterized in that: including outer presser foot (1), interior presser foot (2) and cylinder (3), the upper end and the cylinder support (4) of cylinder (3) are connected, the lower extreme is piston rod (5), and the outer end of piston rod (5) is provided with cylinder joint (6), be provided with spout seat (7) on cylinder joint (6), be provided with the spout on spout seat (7), the one end of eccentric link regulation crank (8) is slided and is established in the spout, the other end is connected with cylinder support (4) and set up on presser foot lift shaft (9), cylinder joint (6) are still connected with presser foot oscillating axle (10) through eccentric wheel link assembly, lift shaft (9) are connected with the one end presser foot of lifting crank (11), and the other end and outer presser foot (1), interior presser foot (2) of lifting crank (11) are connected.
2. The pneumatic interaction quantity fast switching mechanism according to claim 1, wherein: the cylinder bracket (4) is provided with a strip-shaped hole (12) arranged along the up-down direction, one end of a threaded pin (13) is arranged in the strip-shaped hole (12), and the other end of the threaded pin is connected with the cylinder (3).
3. The pneumatic interaction volume fast switching mechanism of claim 2, wherein: the lower extreme of cylinder support (4) is provided with mounting panel (14), the other end of eccentric link regulation crank (8) is provided with presser foot lifting shaft hole and radial open slot that communicates presser foot lifting shaft hole, and screw (15) pass mounting panel, open slot spiro union in proper order on the other end of eccentric link regulation crank (8) realize simultaneously that eccentric link regulation crank (8) is connected with mounting panel (14) and eccentric link regulation crank (8) is connected with presser foot lifting shaft (9).
4. The pneumatic interaction volume fast switching mechanism of claim 2, wherein: the upper end of the air cylinder (3) is provided with an air cylinder upper joint (16), and the other end of the threaded pin (13) is connected with the air cylinder upper joint (16).
5. The pneumatic interaction quantity fast switching mechanism according to claim 1, wherein: the cylinder joint (6) comprises two side arms arranged at intervals, the chute seat (7) is provided with a connecting pin, and the connecting pin is arranged on the two side arms in a penetrating way.
6. The pneumatic interaction volume fast switching mechanism of claim 5, wherein: the eccentric wheel connecting rod assembly comprises a connecting rod (17) and an eccentric wheel (18), one end of the connecting rod (17) is connected to a connecting pin between two side arms, and the other end of the connecting rod is connected with the presser foot swinging shaft (10) through the eccentric wheel (18).
7. The pneumatic interaction volume fast switching mechanism of claim 6, wherein: a needle bearing is arranged between the connecting pin and one end of the connecting rod (17).
8. The pneumatic interaction quantity fast switching mechanism according to claim 1, wherein: one end of the eccentric connecting rod adjusting crank (8) extends out of the chute seat (7), and a limit screw (19) is arranged at the extending end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223612807.XU CN219045018U (en) | 2022-12-30 | 2022-12-30 | Pneumatic interaction quantity fast switching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223612807.XU CN219045018U (en) | 2022-12-30 | 2022-12-30 | Pneumatic interaction quantity fast switching mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219045018U true CN219045018U (en) | 2023-05-19 |
Family
ID=86320310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223612807.XU Active CN219045018U (en) | 2022-12-30 | 2022-12-30 | Pneumatic interaction quantity fast switching mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219045018U (en) |
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2022
- 2022-12-30 CN CN202223612807.XU patent/CN219045018U/en active Active
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