CN220846527U

CN220846527U - Foot lifting device

Info

Publication number: CN220846527U
Application number: CN202322677862.5U
Authority: CN
Inventors: 叶梦启; 罗一明; 陈吉鸿
Original assignee: Precious Science And Technology Group Corp ltd
Current assignee: Precious Science And Technology Group Corp ltd
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2024-04-26
Anticipated expiration: 2033-10-07

Abstract

The application relates to the field of sewing machines, in particular to a presser foot lifting device which comprises a machine head, a driving motor, a presser foot shaft, a transmission assembly, a connecting seat, a pressing rod, a presser foot, a swinging rod, a manual control assembly, a crank and a pin shaft. Is convenient for people to operate.

Description

Foot lifting device

Technical Field

The application relates to the field of sewing machines, in particular to a presser foot lifting device.

Background

A sewing machine is a machine that interweaves or sews one or more layers of stitching material by forming one or more stitches on the stitching material with one or more stitching threads.

In order to sew out high-quality stitch and enable the feeding tooth to have good feeding quality, the existing sewing machine needs to press the stitch with proper presser foot pressure, different stitch materials need different presser foot pressures, and the presser foot is lifted manually, so that the presser foot lifting mode is easy to control and does not consume energy.

However, when the pressure of the presser foot is relatively high, the operator can be relatively hard to lift the presser foot manually, so that the labor intensity of workers is relatively high.

Disclosure of utility model

In order to facilitate operation of operators, the application provides a presser foot lifting device.

The application provides a presser foot lifting device which adopts the following technical scheme:

The utility model provides a lift presser foot, includes aircraft nose, driving motor, presser foot axle, drive assembly, connecting seat, depression bar, presser foot, pendulum rod, manual control assembly, crank and round pin axle, driving motor fixed connection is in the aircraft nose, the presser foot axle rotates around self axis and sets up on the aircraft nose, the axis of rotation level of presser foot axle, driving motor passes through drive assembly and drives the presser foot axle and rotate, the connecting seat slides from top to bottom in the casing, the upper end fixed connection of depression bar is in the connecting seat, presser foot fixed connection is in the lower extreme of depression bar, the pendulum rod is equipped with the connector, the coaxial rotation of presser foot axle is connected in the inner wall of connector, the one end that the connecting seat was kept away from to the pendulum rod is connected with the connecting block, the upper end butt in manual control assembly of connecting block, the one end that the pendulum rod is close to the connecting seat is connected with the butt piece, the upper end butt in the connecting seat of butt, crank fixed connection is in the presser foot axle, the one end that the crank is close to the connecting seat is equipped with the mouth, the axis of axis parallel to the axle of presser foot, the round pin axle runs through the mouth, the lower extreme in the butt of butt piece.

Through adopting above-mentioned technical scheme, can also drive the presser foot axle through manual control subassembly control connecting seat lifting, also can use driving motor to rotate, through round pin axle control connecting seat lifting after the synchronous rotation of crank, use different modes to lift the presser foot according to different presser foot pressures, when the presser foot pressure is less, use manual control subassembly to lift the presser foot, reduce energy consumption, when the presser foot pressure is great, use driving motor to lift the presser foot, reduce operating personnel's intensity of labour, the operating personnel of being convenient for operate.

Preferably, the transmission assembly comprises a first gear and a second gear, the first gear is coaxially and fixedly connected with a motor shaft of the driving motor, the second gear is coaxially and fixedly connected with the presser foot shaft, the motor shaft axis of the driving motor is parallel to the axis of the presser foot shaft, and the first gear is meshed with the second gear.

Through adopting above-mentioned technical scheme, driving motor drive first gear and second gear drive presser foot axle rotation, simple structure uses stably, the operating personnel operation of being convenient for.

Preferably, the manual control assembly comprises a rotating rod and a cam, a rotating opening is formed in the outer wall of the shell, the rotating rod is coaxially connected to the inner wall of the rotating opening in a rotating mode, the cam is coaxially and fixedly connected to one end, close to the swing rod, of the rotating rod, and the outer wall of the cam is abutted to the upper end of the connecting block.

Through adopting above-mentioned technical scheme, the dwang rotates and makes the cam synchronous rotation, uses the cam to push down the connecting block, and the synchronous rising of butt piece realizes the lifting with the connecting seat for presser foot lifting, simple structure, easy and simple to handle.

Preferably, the manual control assembly further comprises a wrench, and one end of the wrench is fixedly connected to one end of the rotating rod, which is far away from the swing rod.

Through adopting above-mentioned technical scheme, the pivoted spanner can control the dwang and rotate, and operating personnel operates laborsaving, reduces operating personnel's intensity of labour, the operating personnel of being convenient for operates.

Preferably, the presser foot lifting device further comprises a presser spring sleeve, a presser foot inner sleeve and a spring, wherein the upper end of the machine head is provided with a fixing opening, the outer wall of the presser spring sleeve is fixedly connected with the inner wall of the fixing opening, the presser foot inner sleeve is slidably connected with the inner wall of the pressure spring sleeve, the lower end of the presser foot inner sleeve is provided with a mounting groove, the upper end of the connecting seat is connected with a mounting rod, one end of the spring is abutted to the bottom of the mounting groove, and the other end of the spring is sleeved on the periphery of the mounting rod.

By adopting the technical scheme, the spring is convenient for the presser foot to reset, and the spring enables the presser foot to have certain presser foot pressure, so that the stitching materials are convenient to compress, and the stitching quality is improved.

Preferably, the pressure lifting foot further comprises a pressure adjusting rod, one side of the pressure spring sleeve is provided with a through hole, the upper end of the pressure adjusting rod is abutted to the upper end of the inner sleeve of the pressure foot after penetrating through the through hole, the lower end of the pressure adjusting rod is provided with a pin hole, and the pin shaft penetrates through the pin hole.

By adopting the technical scheme, the presser foot shaft rotates, so that the crank rotates, the pin shaft moves downwards to drive the pressure adjusting rod to move downwards, the pressure of the presser foot is increased, the pressure of the presser foot is convenient to adjust, and the operation is simple and convenient.

Preferably, one end of the crank, which is close to the connecting seat, is provided with a limiting groove, the groove wall of the limiting groove is provided with a through hole, and the lower end of the pressure regulating rod is arranged in the limiting groove.

Through adopting above-mentioned technical scheme, the spacing groove is spacing to the position of pressure regulation pole for pressure regulation pole is difficult for droing, improves the stability of using.

Preferably, the presser foot lifting device further comprises a sleeve, the machine head is provided with a positioning opening, the axis of the positioning opening is vertical, the sleeve is fixedly connected to the inner wall of the positioning opening, and the pressing rod axially slides in the sleeve.

Through adopting above-mentioned technical scheme, the sleeve is fixed a position and spacing to the upper and lower slip of depression bar for the depression bar is difficult for the skew position.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The connecting seat can be controlled to be lifted by the manual control assembly, the driving motor can be used for driving the presser foot shaft to rotate, the connecting seat is controlled to be lifted by the pin shaft after the crank synchronously rotates, the presser foot is lifted in different modes according to different presser foot pressures, when the presser foot pressure is smaller, the presser foot is lifted by the manual control assembly, the energy consumption is reduced, and when the presser foot pressure is larger, the presser foot is lifted by the driving motor, the labor intensity of operators is reduced, and the operation of the operators is facilitated;

2. The spring is convenient for resetting the presser foot, and the presser foot has certain presser foot pressure, so that the stitching material is convenient to compress, and the stitching quality is improved;

3. The presser foot shaft rotates to enable the crank to rotate, the pin shaft moves downwards to drive the pressure adjusting rod to move downwards, so that the pressure of the presser foot is increased, the pressure of the presser foot is convenient to adjust, and the operation is simple and convenient.

Drawings

Fig. 1 is a schematic view of the whole structure of a presser foot.

Fig. 2 is a schematic diagram of the whole structure of the presser foot, mainly used for showing the groove and the driving motor.

Fig. 3 is a schematic view of the overall structure of the drive motor, presser foot shaft, transmission assembly, pressure adjustment assembly, connecting seat, presser foot assembly, lifting assembly and manual control assembly.

FIG. 4 is a schematic illustration of the internal structure of the pressure adjustment assembly, the connection block, the presser foot assembly, the lifting assembly, and the manual control assembly, shown broken away.

FIG. 5 is a schematic view of the overall structure of the pressure adjustment lever, lift assembly and manual control assembly.

Reference numerals illustrate: 1. a machine head; 11. a receiving chamber; 12. a groove; 121. a driving port; 13. a fixed port; 14. a positioning port; 15. a rotating port; 2. a driving motor; 3. a presser foot shaft; 4. a transmission assembly; 41. a first gear; 42. a second gear; 5. a pressure regulating assembly; 51. a pressure spring sleeve; 511. a clasp; 512. a through port; 52. a presser foot inner sleeve; 521. a mounting groove; 53. a spring; 54. a pressure adjusting lever; 541. a pressing plate; 542. a connecting rod; 543. a limit rod; 5431. a pin opening; 6. a connecting seat; 61. a mounting rod; 62. a driving block; 7. a presser foot assembly; 71. a compression bar; 72. a sleeve; 73. a presser foot; 8. a lifting assembly; 81. swing rod; 811. a connection port; 812. a connecting block; 813. an abutment block; 82. a crank; 821. a limit groove; 822. a through hole; 83. a pin shaft; 9. a manual control assembly; 91. a rotating lever; 92. a cam; 93. and (5) a spanner.

Detailed Description

The application is described in further detail below with reference to fig. 1-5.

The embodiment of the application discloses a presser foot lifting device. Referring to fig. 1 and 2, the presser foot lifting device comprises a machine head 1, a driving motor 2, a presser foot shaft 3, a transmission assembly 4, a pressure adjusting assembly 5, a connecting seat 6, a presser foot assembly 7, a lifting assembly 8 and a manual control assembly 9.

The aircraft nose 1 is equipped with and holds chamber 11, and the one end of aircraft nose 1 is equipped with recess 12, and the tank bottom of recess 12 is equipped with drive mouth 121, and drive mouth 121 communicates in holding chamber 11, and driving motor 2 is fixed to inlay in recess 12, and driving motor 2's motor shaft passes drive mouth 121 and stretches into holding intracavity 11. The presser foot shaft 3 is arranged in the accommodating cavity 11, the presser foot shaft 3 is rotatably arranged on the machine head 1 around the axis of the presser foot shaft 3, the rotation axis of the presser foot shaft 3 is parallel to the axis of the motor shaft of the driving motor 2, and the axis of the presser foot shaft 3 is horizontal.

Referring to fig. 1 and 3, the transmission assembly 4 is disposed in the accommodating cavity 11, the transmission assembly 4 includes a first gear 41 and a second gear 42, the first gear 41 is coaxially and fixedly connected to the motor shaft of the driving motor 2, the second gear 42 is coaxially and fixedly connected to the presser foot shaft 3, and the first gear 41 is engaged with the second gear 42. The transmission assembly 4 can also be a synchronous wheel and synchronous belt.

Referring to fig. 1 and 4, the pressure adjusting assembly 5 comprises a pressure spring sleeve 51, a presser foot inner sleeve 52 and a spring 53, wherein a fixing opening 13 is formed in the upper end of the machine head 1, the axis of the fixing opening 13 is vertical, the fixing opening 13 is communicated with the accommodating cavity 11, a clamping ring 511 is coaxially and fixedly connected to the outer wall of the pressure spring sleeve 51, the outer diameter of the pressure spring sleeve 51 is equal to the diameter of the fixing opening 13, the outer diameter of the clamping ring 511 is larger than the diameter of the fixing opening 13, the lower end of the clamping ring 511 abuts against the upper end of the machine head 1, and the outer wall of the pressure spring sleeve 51 is fixedly connected to the inner wall of the fixing opening 13.

Referring to fig. 4, the presser foot inner sleeve 52 is coaxially and slidably connected to the inner wall of the pressure spring sleeve 51, the lower end of the presser foot inner sleeve 52 is coaxially provided with a mounting groove 521, the upper end of the connection base 6 is connected with a mounting rod 61, the upper end of the spring 53 abuts against the bottom of the mounting groove 521, the spring 53 is sleeved on the outer periphery of the mounting rod 61, and the lower end of the spring 53 abuts against the upper end of the connection base 6.

Referring to fig. 1 and 4, the presser foot assembly 7 includes a pressing rod 71, a sleeve 72 and a presser foot 73, wherein the upper end of the pressing rod 71 is fixedly connected to the lower end of the connecting seat 6, the machine head 1 is provided with a positioning opening 14, the axis of the positioning opening 14 is parallel to the axis of the fixing opening 13, the sleeve 72 is fixedly connected to the inner wall of the positioning opening 14, the pressing rod 71 slides up and down along the axis of the positioning opening 14 in the sleeve 72, and the presser foot 73 is fixedly connected to the lower end of the pressing rod 71.

Referring to fig. 1 and 5, the lifting assembly 8 comprises a swing rod 81, a crank 82 and a pin shaft 83, the outer wall of the machine head 1 is provided with a rotating opening 15, the axis of the rotating opening 15 is horizontal and vertical to the axis of the presser foot shaft 3, the presser foot shaft 3 is arranged between the rotating opening 15 and the connecting seat 6, the swing rod 81 is provided with a connecting port 811, the presser foot shaft 3 is coaxially and rotatably connected to the inner wall of the connecting port 811, one end of the swing rod 81 away from the connecting seat 6 is connected with a connecting block 812, and one end of the swing rod 81 close to the connecting seat 6 is connected with a butt block 813.

Referring to fig. 1 and 4, the manual control assembly 9 includes a rotation lever 91, a cam 92 and a wrench 93, wherein the rotation lever 91 is coaxially and rotatably connected to an inner wall of the rotation opening 15, the cam 92 is coaxially and fixedly connected to an end of the rotation lever 91 near the swing link 81, an outer periphery of the cam 92 abuts against an upper end of the connection block 812, and an end of the wrench 93 is fixedly connected to an end of the rotation lever 91 far from the swing link 81.

Referring to fig. 3 and 4, the driving block 62 is fixedly connected to the outer wall of the connection base 6 facing the driving motor 2, and the upper end of the abutment block 813 abuts the lower end of the driving block 62. The crank 82 is fixedly connected to the presser foot shaft 3, and the crank 82 is arranged between the swing rod 81 and the second gear 42.

Referring to fig. 1 and 5, a limit groove 821 is provided at an end of the crank 82 away from the rotation port 15, a through hole 822 is provided at a groove wall of the limit groove 821, the through hole 822 penetrates the crank 82, an axis of the through hole 822 is parallel to an axis of the presser foot shaft 3, a pin 83 penetrates the through hole 822, and an end of the pin 83 facing the connecting seat 6 is used for abutting against a lower end of the abutment block 813.

Referring to fig. 4 and 5, the outer wall of the pressure spring sleeve 51 facing the crank 82 is provided with a through hole 512, the pressure adjusting assembly 5 further comprises a pressure adjusting rod 54, the pressure adjusting rod 54 comprises a pressing plate 541, a connecting rod 542 and a limiting rod 543, the pressing plate 541 is fixedly connected to one end of the connecting rod 542, the limiting rod 543 is fixedly connected to the other end of the connecting rod 542, the limiting rod 543 is provided with a pin hole 5431, the limiting rod 543 is arranged in the limiting groove 821, and the pin shaft 83 penetrates through the pin hole 5431 and is connected to the inner wall of the pin hole 5431. The pressing plate 541 passes through the through-hole 512 and then abuts against the upper end of the presser foot inner housing 52, and the pressing plate 541 slides up and down in the through-hole 512.

The implementation principle of the embodiment of the application for lifting the presser foot is as follows: when the presser foot 73 is required to be lifted, the manual rotation wrench 93 controls the rotation of the rotation rod 91, the cam 92 synchronously rotates, the pressing connection block 812 is pressed down, the swing rod 81 rotates, the abutting block 813 is lifted, the connecting seat 6 is lifted, when manual operation is hard, the driving motor 2 controls the presser foot shaft 3 to rotate through the transmission assembly 4, the crank 82 synchronously rotates, the pin shaft 83 drives the abutting block 813 to synchronously lift, the connecting seat 6 is lifted, and when the driving motor 2 rotates in the opposite direction, the pin shaft 83 drives the pressure adjusting rod 54 to press down, so that the pressure of the spring 53 is increased, and the presser foot pressure is adjusted.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. A lift presser foot which is characterized in that: including aircraft nose (1), driving motor (2), presser foot axle (3), drive assembly (4), connecting seat (6), depression bar (71), presser foot (73), pendulum rod (81), manual control assembly (9), crank (82) and round pin axle (83), driving motor (2) fixed connection is in aircraft nose (1), presser foot axle (3) rotate around self axis and set up on aircraft nose (1), the axis of rotation of presser foot axle (3) is horizontal, driving motor (2) drive presser foot axle (3) rotation through drive assembly (4), connecting seat (6) slide from top to bottom in the casing, the upper end fixed connection of depression bar (71) is in connecting seat (6), presser foot (73) fixed connection is in the lower extreme of depression bar (71), pendulum rod (81) are equipped with connector (811), the coaxial rotation of presser foot axle (3) is connected in the inner wall of connector (811), the one end that connecting seat (6) were kept away from to pendulum rod (81) is connected with connecting block (812), the upper end butt subassembly (9) of connecting block (812) is in the butt joint seat (813) is connected to one end butt joint seat (6), the crank (82) is fixedly connected to the presser foot shaft (3), a through hole (822) is formed in one end, close to the connecting seat (6), of the crank (82), the axis of the through hole (822) is parallel to the axis of the presser foot shaft (3), the pin shaft (83) penetrates through the through hole (822), and the lower end of the abutting block (813) abuts against the pin shaft (83).

2. The lift foot as set forth in claim 1 wherein: the transmission assembly (4) comprises a first gear (41) and a second gear (42), the first gear (41) is coaxially and fixedly connected with a motor shaft of the driving motor (2), the second gear (42) is coaxially and fixedly connected with the presser foot shaft (3), the motor shaft axis of the driving motor (2) is parallel to the axis of the presser foot shaft (3), and the first gear (41) is meshed with the second gear (42).

3. The lift foot as set forth in claim 1 wherein: the manual control assembly (9) comprises a rotating rod (91) and a cam (92), a rotating opening (15) is formed in the outer wall of the machine shell, the rotating rod (91) is coaxially and rotatably connected to the inner wall of the rotating opening (15), the cam (92) is coaxially and fixedly connected to one end, close to the swing rod (81), of the rotating rod (91), and the outer wall of the cam (92) is abutted to the upper end of the connecting block (812).

4. A lift foot as set forth in claim 3 wherein: the manual control assembly (9) further comprises a spanner (93), and one end of the spanner (93) is fixedly connected to one end, far away from the swing rod (81), of the rotating rod (91).

5. The lift foot as set forth in claim 1 wherein: the presser foot lifting device comprises a machine head (1), and is characterized by further comprising a presser spring sleeve (51), a presser foot inner sleeve (52) and a spring (53), wherein the upper end of the machine head (1) is provided with a fixing opening (13), the outer wall of the pressure spring sleeve (51) is fixedly connected with the inner wall of the fixing opening (13), the presser foot inner sleeve (52) is slidably connected with the inner wall of the pressure spring sleeve (51), the lower end of the presser foot inner sleeve (52) is provided with a mounting groove (521), the upper end of the connecting seat (6) is connected with a mounting rod (61), one end of the spring (53) is abutted to the groove bottom of the mounting groove (521), and the other end of the spring (53) is sleeved on the periphery of the mounting rod (61).

6. The lift foot as set forth in claim 5 wherein: the pressure lifting foot further comprises a pressure adjusting rod (54), one side of the pressure spring sleeve (51) is provided with a through hole (512), the upper end of the pressure adjusting rod (54) is abutted against the upper end of the pressure inner sleeve (52) after penetrating through the through hole (512), the lower end of the pressure adjusting rod (54) is provided with a pin hole (5431), and the pin shaft (83) penetrates through the pin hole (5431).

7. The lift foot as set forth in claim 6 wherein: one end of the crank (82) close to the connecting seat (6) is provided with a limit groove (821), the groove wall of the limit groove (821) is provided with a through hole (822), and the lower end of the pressure regulating rod (54) is arranged in the limit groove (821).

8. The lift foot as set forth in claim 1 wherein: the presser foot lifting device comprises a machine head (1), and is characterized by further comprising a sleeve (72), wherein the machine head (1) is provided with a positioning opening (14), the axis of the positioning opening (14) is vertical, the sleeve (72) is fixedly connected to the inner wall of the positioning opening (14), and the pressing rod (71) axially slides in the sleeve (72).