CN213357918U

CN213357918U - Presser foot lifting mechanism of button sewing machine

Info

Publication number: CN213357918U
Application number: CN202022249873.XU
Authority: CN
Inventors: 张启朋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-06-04
Anticipated expiration: 2030-10-10

Abstract

The utility model provides a presser foot lifting mechanism of button sewing machine belongs to button sewing machine technical field. The problems that the transmission noise of a presser foot lifting mechanism of the existing button sewing machine is large, the precision is low, and the transmission stability is poor are solved. The presser foot lifting mechanism of the button sewing machine comprises a button sewing machine shell, a presser foot lifting main shaft which is transversely penetrated is arranged in the button sewing machine shell, a presser foot component is arranged at the front end of the button sewing machine shell and is positioned below the presser foot lifting main shaft, a linkage structure which enables the presser foot component to be lifted or put down along with the rotation of the presser foot lifting main shaft is arranged between the presser foot lifting main shaft and the presser foot component, a stepping motor is fixedly arranged at the rear end of the button sewing machine shell, and a transmission connecting device which drives the presser foot lifting main shaft to rotate is arranged between the stepping motor and the presser foot lifting main shaft. The utility model discloses lifting the rotatory more stable of presser foot main shaft, transmission noise is less, and whole transmission structure is comparatively stable, and the transmission position is accurate, has improved the precision of lifting the presser foot greatly.

Description

Presser foot lifting mechanism of button sewing machine

Technical Field

The utility model belongs to the technical field of the button sewing machine, a lift presser foot mechanism of button sewing machine is related to.

Background

The button sewing machine belongs to a special sewing machine, and the technology is mature; the traditional presser foot lifting mechanism of the button sewing machine is driven by manpower, so that the working intensity of workers is increased, and the long-time frequent presser foot lifting can cause body ache and the reduction of the working efficiency.

In response to the above problem, a button sewing machine has appeared on the market; for example, Chinese patent numbers are: 201520006239.X, the publication number is: "CN 204474916U" a button sewing machine and automatic presser foot mechanism that lifts thereof, its concrete structure is: a cross shaft is rotatably arranged in the shell, a connecting rod assembly which rotates along with the cross shaft and lifts or puts down the lifting foot of the button sewing machine is arranged on the cross shaft, one end of the cross shaft extends out of the shell and is fixedly provided with an outer rotating arm, an electromagnetic driver is arranged on the rear side in the shell, and a driving rod of the electromagnetic driver is abutted against the outer rotating arm.

The structure adopts the electromagnetic driver to drive the cross shaft to rotate, and the connecting rod assembly is driven to move through the rotation of the cross shaft to realize the lifting or the lowering of the pressure foot; the rotation of the cross shaft has disturbance, so that the pressure foot lifting is influenced to a certain extent, and the pressure foot lifting has the defects of delay and the like; and the cross shaft is driven to rotate by the electromagnetic driver, so that the transmission noise is high, the precision is low, the transmission stability is poor, and the service life is short.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, the transmission precision is higher, and transmission noise is little, long service life's button sewing machine lift presser foot mechanism.

The purpose of the utility model can be realized by the following technical proposal: the presser foot lifting mechanism of the button sewing machine comprises a button sewing machine shell, wherein a presser foot lifting main shaft which penetrates through the button sewing machine shell in the transverse direction is arranged in the button sewing machine shell, the presser foot lifting main shaft is matched with the button sewing machine shell in a rotating mode, a presser foot component is arranged at the front end of the button sewing machine shell and is located below the presser foot lifting main shaft, and a linkage structure which enables the presser foot component to be lifted or put down along with the rotation of the presser foot lifting main shaft is arranged between the presser foot lifting main shaft and the presser foot component.

The presser foot lifting mechanism of the button sewing machine is mainly provided with a transmission connecting device between a stepping motor and a presser foot lifting main shaft, when the stepping motor rotates along a pointer, the presser foot lifting main shaft is driven by the transmission connecting device to rotate along the pointer, and a presser foot assembly is lifted upwards under the driving of a linkage structure; when the stepping motor rotates against the pointer, the pressure foot lifting main shaft is driven by the transmission connecting device to rotate against the pointer, and the pressure foot component is pressed downwards under the driving of the linkage structure; through setting up step motor, transmission connecting device, the lifting or putting down stable in structure of presser foot subassembly, the transmission noise is less, lifts the rotatory angle control of presser foot main shaft accurate, and the lifting or putting down position of presser foot subassembly is accurate, convenient to use.

In the presser foot lifting mechanism of the button sewing machine, the transmission connecting device comprises a transmission connecting rod, a main shaft of the stepping motor is fixedly connected with a driving rocker arm which is radially arranged, the rear end of the presser foot lifting main shaft extends out of a shell of the button sewing machine, the extending end of the rear end of the presser foot lifting main shaft is fixedly connected with a driven rocker arm which is radially arranged, the transmission connecting rod is positioned between the driving rocker arm and the driven rocker arm, one end of the transmission connecting rod is hinged with the free end of the driving rocker arm, and the other end of the transmission connecting rod is hinged with the free end of the driven rocker arm. The purpose that sets up like this is when the main shaft rotation of initiative rocking arm along with step motor and circumference swing, drives the circumference swing of driven rocking arm through the articulated of transmission connecting rod, makes and lifts presser foot main shaft and rotate along with the circumference swing of driven rocking arm, and transmission stable in structure.

In the presser foot lifting mechanism of the button sewing machine, a first ball pin is fixedly arranged at the free end of the driving rocker arm, a second ball pin is fixedly arranged at the free end of the driven rocker arm, one end of the transmission connecting rod is hinged with the ball head of the first ball pin, the rod part of the first ball pin is fixedly connected with the free end of the driving rocker arm, the other end of the transmission connecting rod is hinged with the ball head of the second ball pin, and the rod part of the second ball pin is fixedly connected with the free end of the driven rocker arm. The purpose that sets up like this makes transmission connecting rod and initiative rocking arm, driven rocking arm stably articulated, avoids appearing transmission connecting rod and initiative rocking arm, driven rocking arm articulated card dead phenomenon, and structural stability is high.

In the presser foot lifting mechanism of the button sewing machine, the rear end of the shell of the button sewing machine is fixedly provided with the connecting seat, and the stepping motor is fixedly arranged on the connecting seat. The purpose of setting up like this is the connection assembly of convenient step motor on button sewing machine casing, avoids the interference of step motor mounted position.

In the presser foot lifting mechanism of the button sewing machine, the connecting seat is provided with the position sensor, the driving rocker arm is provided with the sensing bulge, and the sensing bulge and the position sensor are distributed relatively. This position sensor is prior art, can directly purchase on the market, and position sensor has two kinds, divide into: the presser foot lifting mechanism of the button sewing machine adopts the proximity sensor, the button sewing machine is provided with a controller, the position sensor and the stepping motor are connected with the controller through electric wires, and the initial position of the rotation of the stepping motor is determined through the setting of the position sensor.

In the presser foot lifting mechanism of the button sewing machine, the connecting seat is further provided with a limiting column, the limiting column is distributed on one side of the main shaft of the stepping motor in parallel, and when the sensing bulge of the driving rocker arm and the position sensor are distributed relatively, the driving rocker arm is abutted against the limiting column. The initial position of the rotation of the main shaft of the stepping motor is further ensured by arranging the limiting columns, and the structural stability is high.

In the presser foot lifting mechanism of the button sewing machine, the presser foot component comprises a presser foot spring plate and a presser foot plate fixedly connected to the presser foot spring plate, the presser foot spring plate is horizontally distributed, one end of the presser foot spring plate is fixedly connected to the shell of the button sewing machine, and the presser foot plate is positioned at the other end of the presser foot spring plate. The purpose of the arrangement is to enable the foot pressing plate to have elastic abutting effect when the foot pressing plate abuts against the base of the button sewing machine.

In the presser foot lifting mechanism of the button sewing machine, the linkage structure comprises hook-shaped hanging rods which are vertically distributed, the upper ends of the hook-shaped hanging rods extend into the shell of the button sewing machine, a connecting shaft sleeve is arranged between the extending end of the upper ends of the hook-shaped hanging rods and the presser foot lifting main shaft, the hook-shaped hanging rods and the presser foot lifting main shaft are vertically connected through the connecting shaft sleeve, a hanging piece is fixedly connected to the presser foot spring plate, and a hook part at the lower end of the hook-shaped hanging rods is hooked on the hanging piece. The purpose of setting up like this is conveniently to lift the connection of presser foot main shaft and presser foot spring board, and convenient assembling.

Compared with the prior art, the presser foot lifting mechanism of the button sewing machine has the advantages that: the presser foot lifting mechanism is reasonable and simple in structural design, the stepping motor drives the transmission to enable the presser foot lifting main shaft to rotate stably, the transmission noise is low, the whole transmission structure is stable, the transmission position is accurate, and the precision of the presser foot lifting is greatly improved.

Drawings

Fig. 1 is a schematic perspective view of a presser foot lifting mechanism of the button sewing machine.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a button sewing machine shell; 2. lifting the presser foot main shaft; 3. a stepping motor; 4. a transmission connecting rod; 5. an active rocker arm; 6. a driven rocker arm; 7. a ball stud I; 8. a ball stud II; 9. a connecting seat; 10. a position sensor; 11. sensing the bulge; 12. a limiting column; 13. a presser foot spring plate; 14. a foot pressing plate; 15. a hook-shaped hanging rod; 16. connecting the shaft sleeve; 17. and (7) hanging and connecting pieces.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the presser foot lifting mechanism of the button sewing machine mainly comprises a button sewing machine shell 1, a presser foot lifting main shaft 2 transversely penetrating through the button sewing machine shell 1 is arranged in the button sewing machine shell 1, the presser foot lifting main shaft 2 is matched with the button sewing machine shell 1 in a rotating manner, a presser foot component is arranged at the front end of the button sewing machine shell 1, and the presser foot component is positioned below the presser foot lifting main shaft 2; in practical application, the presser foot assembly mainly comprises a presser foot spring plate 13 and a presser foot plate 14 fixedly connected to the presser foot spring plate 13, wherein the presser foot spring plate 13 is horizontally distributed, one end of the presser foot spring plate 13 is fixedly connected to the casing 1 of the button sewing machine, and the presser foot plate 14 is located at the other end of the presser foot spring plate 13.

A linkage structure which enables the presser foot component to be lifted or put down along with the rotation of the presser foot lifting main shaft 2 is arranged between the presser foot lifting main shaft 2 and the presser foot component.

In actual manufacturing, the specific implementation mode of the linkage structure is as follows: the device mainly comprises a hook-shaped hanging rod 15, the hook-shaped hanging rod 15 is vertically distributed, the upper end of the hook-shaped hanging rod 15 extends into a casing 1 of the button sewing machine, a connecting shaft sleeve 16 is arranged between the extending end of the upper end of the hook-shaped hanging rod 15 and a presser foot lifting spindle 2, the hook-shaped hanging rod 15 and the presser foot lifting spindle 2 are vertically connected through the connecting shaft sleeve 16, a hanging piece 17 is fixedly connected to a presser foot spring plate 13, and a hook part at the lower end of the hook-shaped hanging rod 15 is hooked on the hanging piece 17.

The rear end of the button sewing machine shell 1 is fixedly provided with a connecting seat 9, a stepping motor 3 is fixedly arranged on the connecting seat 9, and a transmission connecting device for driving the presser foot lifting main shaft 2 to rotate is arranged between the stepping motor 3 and the presser foot lifting main shaft 2.

In actual manufacturing, the specific implementation mode of the transmission connecting device is as follows: the automatic sewing machine is mainly composed of a transmission connecting rod 4, a main shaft of a stepping motor 3 is fixedly connected with a driving rocker arm 5 which is arranged in a radial direction, the rear end of a pressure foot lifting main shaft 2 extends out of a sewing machine shell 1, the extending end of the rear end of the pressure foot lifting main shaft 2 is fixedly connected with a driven rocker arm 6 which is arranged in the radial direction, the transmission connecting rod 4 is positioned between the driving rocker arm 5 and the driven rocker arm 6, one end of the transmission connecting rod 4 is hinged with the free end of the driving rocker arm 5, and the other end of the transmission connecting rod 4 is hinged with the free end of the driven; specifically speaking: the free end of the driving rocker arm 5 is fixedly provided with a ball pin I7, the free end of the driven rocker arm 6 is fixedly provided with a ball pin II 8, one end of the transmission connecting rod 4 is hinged with the ball of the ball pin I7, the rod part of the ball pin I7 is fixedly connected with the free end of the driving rocker arm 5, the other end of the transmission connecting rod 4 is hinged with the ball of the ball pin II 8, and the rod part of the ball pin II 8 is fixedly connected with the free end of the driven rocker arm 6.

In practical application, a position sensor 10 is arranged on the connecting seat 9, an induction bulge 11 is arranged on the active rocker arm 5, and the induction bulge 11 and the position sensor 10 are distributed oppositely; the connecting base 9 is further provided with a limiting column 12, the limiting column 12 is distributed on one side of the spindle of the stepping motor 3 in parallel, and when the sensing protrusion 11 of the driving rocker arm 5 and the position sensor 10 are distributed relatively, the driving rocker arm 5 abuts against the limiting column 12.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the button sewing machine housing 1 is used more herein; lifting the presser foot main shaft 2; a stepping motor 3; a transmission connecting rod 4; an active rocker arm 5; a driven rocker arm 6; a ball stud I7; a second ball stud 8; a connecting seat 9; a position sensor 10; an induction protrusion 11; a stopper post 12; a presser foot spring plate 13; a presser foot plate 14; a hook-shaped hanging rod 15; a connecting boss 16; hanger 17, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The presser foot lifting mechanism of the button sewing machine comprises a button sewing machine shell (1), wherein a presser foot lifting main shaft (2) transversely penetrating is arranged in the button sewing machine shell (1), the presser foot lifting main shaft (2) is matched with the button sewing machine shell (1) in a rotating mode, a presser foot component is arranged at the front end of the button sewing machine shell (1) and located below the presser foot lifting main shaft (2), and a linkage structure enabling the presser foot component to be lifted up or put down along with the rotation of the presser foot lifting main shaft (2) is arranged between the presser foot lifting main shaft (2) and the presser foot component.

2. The presser foot lifting mechanism of the button sewing machine according to claim 1, wherein the transmission connecting device comprises a transmission connecting rod (4), a driving rocker (5) which is radially arranged is fixedly connected to the spindle of the stepping motor (3), the rear end of the presser foot lifting spindle (2) extends out of the button sewing machine shell (1), a driven rocker (6) which is radially arranged is fixedly connected to the extending end of the rear end of the presser foot lifting spindle (2), the transmission connecting rod (4) is positioned between the driving rocker (5) and the driven rocker (6), one end of the transmission connecting rod (4) is hinged to the free end of the driving rocker (5), and the other end of the transmission connecting rod (4) is hinged to the free end of the driven rocker (6).

3. The presser foot lifting mechanism of the button sewing machine as claimed in claim 2, wherein a first ball stud (7) is fixedly arranged at the free end of the driving rocker arm (5), a second ball stud (8) is fixedly arranged at the free end of the driven rocker arm (6), one end of the transmission connecting rod (4) is hinged with the ball head of the first ball stud (7), the rod part of the first ball stud (7) is fixedly connected with the free end of the driving rocker arm (5), the other end of the transmission connecting rod (4) is hinged with the ball head of the second ball stud (8), and the rod part of the second ball stud (8) is fixedly connected with the free end of the driven rocker arm (6).

4. The presser foot lifting mechanism of a button sewing machine as claimed in claim 3, wherein a connecting seat (9) is fixedly arranged at the rear end of the button sewing machine housing (1), and the stepping motor (3) is fixedly arranged on the connecting seat (9).

5. The presser foot lifting mechanism of a button sewing machine according to claim 4, wherein a position sensor (10) is provided on the connecting seat (9), and a sensing protrusion (11) is provided on the active rocker arm (5), and the sensing protrusion (11) and the position sensor (10) are distributed oppositely.

6. The presser foot lifting mechanism of a button sewing machine according to claim 5, characterized in that the connecting seat (9) is further provided with a limiting column (12), the limiting column (12) is distributed in parallel on one side of the main shaft of the stepping motor (3), and when the sensing protrusion (11) of the driving rocker arm (5) and the position sensor (10) are distributed oppositely, the driving rocker arm (5) abuts against the limiting column (12).

7. The presser foot lifting mechanism of a button sewing machine as claimed in claim 1, wherein said presser foot assembly comprises a presser foot spring plate (13) and a presser foot plate (14) attached to the presser foot spring plate (13), said presser foot spring plate (13) being horizontally disposed, one end of the presser foot spring plate (13) being attached to the button sewing machine housing (1), said presser foot plate (14) being located at the other end of the presser foot spring plate (13).

8. The presser foot lifting mechanism of the button sewing machine as claimed in claim 7, wherein the linkage structure comprises hook-shaped hanging rods (15), the hook-shaped hanging rods (15) are vertically distributed, the upper ends of the hook-shaped hanging rods (15) extend into the shell (1) of the button sewing machine, a connecting shaft sleeve (16) is arranged between the extending end of the upper ends of the hook-shaped hanging rods (15) and the presser foot lifting main shaft (2), the hook-shaped hanging rods (15) and the presser foot lifting main shaft (2) are vertically connected through the connecting shaft sleeve (16), a hanging piece (17) is fixedly connected to the presser foot spring plate (13), and hook portions of the lower ends of the hook-shaped hanging rods (15) are hooked on the hanging piece (17).