CN211227611U

CN211227611U - Presser foot structure in adaptability electron

Info

Publication number: CN211227611U
Application number: CN201922203643.7U
Authority: CN
Inventors: 王跃; 陈星�; 朱锦洲; 季时星
Original assignee: Bullmer Electromechanical Technology Co Ltd
Current assignee: Bullmer Electromechanical Technology Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-08-11
Anticipated expiration: 2029-12-10

Abstract

The utility model belongs to the technical field of sewing equipment, in particular to presser foot structure in adaptability electron, including well presser foot support and the step motor who is the driving source, be provided with the shift fork on step motor's the output shaft, be provided with vertical spout on the well presser foot support, the spout internal slip is equipped with top shoe and lower slider, a pair of freely slidable guide post is worn to be equipped with in the both sides of top shoe, and the lower extreme and the lower slider of guide post are fixed, and the cover is equipped with the spring on the guide post between top shoe and the lower slider, the top shoe passes through link mechanism and shift fork connection, be fixed with well presser foot subassembly on the slider down. The utility model provides a presser foot structure in adaptability electron, well presser foot can the flexonics with the cloth to effectively protect the motor, and better solution skip needle problem.

Description

Presser foot structure in adaptability electron

Technical Field

The utility model belongs to the technical field of sewing equipment, in particular to presser foot structure in adaptability electron.

Background

When a traditional sewing machine lifts a needle on a sewing material, the needle can easily drive the sewing material to lift together, so that the problem of thread jumping is caused. In order to realize the thread skipping prevention function of the sewing machine, the existing method is to add a middle presser foot mechanism on the sewing machine, but the middle presser foot mechanism of the existing sewing machine has the defects of complex structure, more parts, high manufacturing and maintenance cost and the following defects: in the sewing process, the middle presser foot only plays the effect of smoothing out the cloth, and not compress tightly the cloth, if touch the cloth and have the height drop moreover, will lead to the part of low too big with middle presser foot distance for the middle presser foot loses the effect of itself, and the high part can be higher than the raising height of middle presser foot, makes middle presser foot and cloth direct rigid contact, and on conducting pressure to the middle presser foot motor, leads to the motor not to operate the set angle, can damage the motor or the run position phenomenon appears.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a presser foot structure in adaptability electron, well presser foot can the flexonics with the cloth to effectively protect the motor, and better solution skip needle problem.

The purpose of the utility model is realized like this:

the utility model provides a presser foot structure in adaptability electron, includes well presser foot support and the step motor who is the driving source, is provided with the shift fork on step motor's the output shaft, be provided with vertical spout on the well presser foot support, the spout internal slip is equipped with top shoe and lower slider, a pair of guide post that can freely slide is worn to be equipped with in the both sides of top shoe, and the lower extreme and the lower slider of guide post are fixed, and the cover is equipped with the spring on the guide post between top shoe and the lower slider, the top shoe passes through link mechanism and is connected with the shift fork, be fixed with well presser foot subassembly on the slider down.

The stepping motor is installed on the motor installation plate, the motor installation plate comprises an upper plate and a side plate which are perpendicular to each other, the upper plate is fixedly connected with the sewing equipment, and the side plate is fixedly connected with the stepping motor.

The connecting rod mechanism comprises an upper connecting rod and a lower connecting rod, wherein the upper end of the upper connecting rod is hinged with the shifting fork, the middle part of the upper connecting rod is hinged with the middle presser foot bracket, the lower end of the upper connecting rod is hinged with the upper end of the lower connecting rod, and the lower end of the lower connecting rod is hinged with the upper sliding block.

The upper connecting rod and the shifting fork are hinged through a hinge shaft and a deep groove ball bearing, and the other positions are hinged through a hinge shaft and a screw.

The middle presser foot assembly comprises a guide rod fixed on the lower sliding block, a connecting block is fixed at the lower end of the guide rod, and a middle presser foot is installed on the connecting block.

The connecting block is connected with the middle presser foot through a pressing rod, the lower end of the middle presser foot is correspondingly provided with a machine needle, and the machine needle is arranged on a machine needle rod.

The guide rods are arranged between the guide columns, namely fixed in the center of the lower sliding block, and the upper ends of the guide rods penetrate through the upper sliding block and can freely slide.

The middle presser foot bracket below the lower sliding block is provided with a convex block, a guide sleeve is arranged in the convex block, and the guide rod is arranged in the guide sleeve in a penetrating mode.

The upper end of the guide post is provided with a limiting guide post head, and the size of the guide post head is larger than that of a through hole of the upper sliding block for penetrating through the guide post.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses the flexonics of presser foot and cloth in can realizing to effectively protect the motor, the while flexonics makes the better cloth that compresses tightly of middle presser foot, effectual solution jump needle problem. The method specifically comprises the following steps: the middle presser foot moves downwards and is subjected to upward resistance when encountering the protrusion, at the moment, force is transmitted to the lower slider through the middle presser foot, the connecting block and the guide rod, the lower slider is forced to move upwards, the compression spring is compressed through the spring, the force is transmitted to the upper slider, and the force is transmitted to the stepping motor through the link mechanism and the shifting fork. The resistance of the stepping motor is determined by the compression amount of the spring, the compression amount of the spring depends on the height of the protrusion touched by the top of the middle presser foot, the stepping motor can still rotate to a program set angle, the motor is not directly prevented from rotating by rigid force, and the purpose of flexible contact is achieved by the buffer action of the spring.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a rear view of the present invention;

1, a middle presser foot bracket; 2. a stepping motor; 3. a shifting fork; 4. a chute; 5. an upper slide block; 6. a lower slide block; 7. a guide post; 8. a spring; 9. a motor mounting plate; 10. an upper connecting rod; 11. a lower connecting rod; 12. a guide bar; 13. connecting blocks; 14. a middle presser foot; 15. a bump; 16. a guide sleeve; 17. and (5) guiding the column head.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 3:

the utility model provides a presser foot structure in adaptability electron, includes well presser foot support 1 and step motor 2 as the driving source, is provided with shift fork 3 on step motor 2's the output shaft, be provided with vertical spout 4 on well presser foot support 1, the spout 4 internal slip is equipped with top shoe 5 and lower slider 6, a pair of guide post 7 that can freely slide is worn to be equipped with in the both sides of top shoe 5, and the lower extreme and the lower slider 6 of guide post 7 are fixed, and the cover is equipped with spring 8 on the guide post 7 between top shoe 5 and the lower slider 6, top shoe 5 is connected with shift fork 3 through link mechanism, be fixed with well presser foot subassembly on the lower slider 6.

The connecting rod mechanism comprises an upper connecting rod 10 and a lower connecting rod 11, wherein the upper end of the upper connecting rod 10 is hinged with the shifting fork 3, the middle part of the upper connecting rod is hinged with the middle presser foot bracket 1, the lower end of the upper connecting rod is hinged with the upper end of the lower connecting rod 11, and the lower end of the lower connecting rod 11 is hinged with the upper sliding block 5.

The middle presser foot assembly comprises a guide rod 12 fixed on the lower sliding block 6, a connecting block 13 is fixed at the lower end of the guide rod 12, and a middle presser foot 14 is installed on the connecting block 13.

The working process of the structure is as follows: the stepping motor 2 rotates back and forth to drive the shifting fork 3 to rotate back and forth, the rotation of the shifting fork 3 drives the upper sliding block 5 to move up and down in the sliding groove 4 through the conversion of the link mechanism, and then drives the lower sliding block 6 to move up and down synchronously, and finally drives the middle presser foot component fixed with the lower sliding block 6 to move up and down.

The middle presser foot 14 moves downwards to touch the sudden bulge, the top of the middle presser foot is subjected to upward resistance, at the moment, force is transmitted to the lower slide block 6 through the middle presser foot 14, the connecting block 13 and the guide rod 12, the lower slide block 6 is forced to move upwards, the spring 8 is compressed, the force is transmitted to the upper slide block 5 through the compression of the spring 8, and then the force is transmitted to the stepping motor 2 through the link mechanism and the shifting fork 3. The cushioning effect of the spring 8 ensures a flexible contact of the above-mentioned structure.

The mounting structure of the stepping motor 2 is as follows: above-mentioned step motor 2 is installed on motor mounting panel 9, motor mounting panel 9 includes mutually perpendicular's upper plate and curb plate, upper plate and sewing equipment fixed connection, curb plate and step motor 2 fixed connection.

The hinge structure is as follows: the upper connecting rod 10 and the shifting fork 3 are hinged through a hinge shaft and a deep groove ball bearing, and the other positions are hinged through a hinge shaft and a screw.

The middle presser foot assembly further comprises: the connecting block 13 is connected with the middle presser foot 14 through a pressing rod, the lower end of the middle presser foot 14 is correspondingly provided with a machine needle, and the machine needle is arranged on a machine needle rod.

In order to stabilize the movement structure of the guide rod 12, the guide rod 12 is disposed between the guide posts 7, i.e., fixed at the center of the lower slider 6, and the upper end of the guide rod 12 is inserted into the upper slider 5 and can freely slide. A convex block 15 is arranged on the middle presser foot bracket 1 below the lower slide block 6, a guide sleeve 16 is arranged in the convex block 15, and the guide rod 12 is arranged in the guide sleeve 16 in a penetrating way.

The upper end of the guide post 7 is provided with a limiting guide post head 17, the size of the guide post head 17 is larger than the through hole of the upper sliding block 5 for penetrating the guide post 7, and the guide post head 17 prevents the guide post 7 from being separated.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a presser foot structure in adaptability electron, includes well presser foot support (1) and step motor (2) as the driving source, is provided with shift fork (3) on the output shaft of step motor (2), its characterized in that, be provided with vertical spout (4) on well presser foot support (1), spout (4) internal slip is equipped with top shoe (5) and lower slider (6), the both sides of top shoe (5) are worn to be equipped with a pair of guide post (7) that can freely slide, and the lower extreme and lower slider (6) of guide post (7) are fixed, and the cover is equipped with spring (8) on guide post (7) between top shoe (5) and lower slider (6), top shoe (5) are connected with shift fork (3) through link mechanism, be fixed with well presser foot subassembly on lower slider (6).

2. An adaptive electronic presser foot structure according to claim 1, wherein said stepping motor (2) is mounted on a motor mounting plate (9), said motor mounting plate (9) comprises an upper plate and a side plate perpendicular to each other, said upper plate is fixedly connected with the sewing machine, and said side plate is fixedly connected with the stepping motor (2).

3. The adaptive electronic middle presser foot structure according to claim 1, wherein the link mechanism comprises an upper link (10) and a lower link (11), the upper end of the upper link (10) is hinged to the shifting fork (3), the middle part is hinged to the middle presser foot support (1), the lower end is hinged to the upper end of the lower link (11), and the lower end of the lower link (11) is hinged to the upper slider (5).

4. The adaptive electronic middle presser foot structure according to claim 1, wherein the middle presser foot assembly comprises a guide rod (12) fixed on the lower slide block (6), a connecting block (13) is fixed at the lower end of the guide rod (12), and a middle presser foot (14) is mounted on the connecting block (13).

5. The adaptive electronic center presser structure according to claim 4, wherein the guide rod (12) is disposed between the guide posts (7), and the upper end of the guide rod (12) is inserted into the upper slider (5) and is capable of freely sliding.

6. The adaptive electronic middle presser foot structure according to claim 4, wherein a projection (15) is arranged on the middle presser foot bracket (1) below the lower slider (6), a guide sleeve (16) is arranged in the projection (15), and the guide rod (12) is arranged in the guide sleeve (16) in a penetrating manner.

7. An adaptive electronic center presser structure according to claim 1, wherein an upper end of said guide post (7) is provided with a limiting guide post head (17).