CN219079809U

CN219079809U - Needle bar connecting shaft of sewing machine

Info

Publication number: CN219079809U
Application number: CN202223313076.9U
Authority: CN
Inventors: 毛寓阳; 陈浩; 周传华
Original assignee: Zhangjiagang Jincaiyang Machinery Co ltd
Current assignee: Zhangjiagang Jincaiyang Machinery Co ltd
Priority date: 2022-12-11
Filing date: 2022-12-11
Publication date: 2023-05-26
Anticipated expiration: 2032-12-11

Abstract

The utility model discloses a needle bar connecting shaft of a sewing machine, which comprises a needle bar fixing piece, wherein one side of the needle bar fixing piece is fixedly connected with a connecting rod, a fixing hole is formed in the needle bar fixing piece, a mounting groove is formed in the front side of the inner wall of the needle bar fixing piece, and positioning grooves are formed in the top and the bottom of the mounting groove; the anti-skid mounting device comprises an abutting block, wherein the abutting block is arranged in the mounting groove, the top and the bottom of the abutting block are fixedly connected with positioning blocks, and an anti-skid pad is arranged on the rear side of the abutting block. According to the utility model, the front end of the adjusting screw is pinched, the adjusting screw is rotated, so that the adjusting screw moves backwards in the adjusting screw hole, the rear end of the adjusting screw can rotate in the mounting cavity under the cooperation of the sliding block and the sliding groove, so that the abutting block is pushed to move backwards in the mounting groove, the needle bars positioned in the fixing holes are fixed, the needle bars with different sizes are conveniently fixed in the needle bar fixing piece, and the applicability of the needle bar fixing piece is improved.

Description

Needle bar connecting shaft of sewing machine

Technical Field

The utility model relates to the technical field of sewing machines, in particular to a needle bar connecting shaft of a sewing machine.

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. The sewing machine can sew cotton, hemp, silk, wool, artificial fiber and other fabrics, leather, plastic, paper and other products, and the sewn stitch is neat, beautiful, flat, firm, fast in sewing speed and simple and convenient to use. When the sewing machine adopts two sewing threads to carry out sewing, the bottom thread is arranged on the rotating shuttle below the needle bar of the sewing machine, the upper thread is arranged in the needle hole at the lower end of the needle bar in a penetrating way, the needle bar drives the needle and the upper thread to move downwards, the needle bar penetrates through a to-be-sewn product between the needle bar and the rotating shuttle, and then the needle and the rotating shuttle are matched to enable the upper thread and the bottom thread to be intersected to form a sewing stitch. The needle bar of the sewing machine needs to be fixed by a connecting shaft when in use.

However, it is inconvenient to fix the needle bars of different sizes in actual use, so that the needle bars of specified sizes can be fixed only when the connecting shaft is used, resulting in lower applicability of the connecting shaft.

Therefore, it is necessary to invent a needle bar connecting shaft of a sewing machine to solve the above problems.

Disclosure of Invention

The utility model aims to provide a needle bar connecting shaft of a sewing machine, which is characterized in that the front end of an adjusting screw is pinched, the adjusting screw is rotated, the adjusting screw moves backwards in an adjusting screw hole, and the rear end of the adjusting screw can rotate in a mounting cavity under the cooperation of a sliding block and a sliding groove, so that an abutting block is pushed to move backwards in the mounting groove, needle bars positioned in a fixing hole are fixed, the needle bars with different sizes are conveniently fixed in a needle bar fixing piece, and the applicability of the needle bar fixing piece is improved, so that the defects in the technology are overcome.

In order to achieve the above object, the present utility model provides the following technical solutions: a needle bar connecting shaft of a sewing machine comprises

The needle bar fixing piece is fixedly connected with a connecting rod at one side of the needle bar fixing piece, a fixing hole is formed in the needle bar fixing piece, a mounting groove is formed in the front side of the inner wall of the needle bar fixing piece, and positioning grooves are formed in the top and the bottom of the mounting groove;

the anti-skid mounting device comprises an abutting block, wherein the inside of the mounting groove is provided with the abutting block, the top and the bottom of the abutting block are fixedly connected with positioning blocks, the rear side of the abutting block is provided with an anti-skid pad, the front side of the abutting block is provided with a mounting cavity, the inner side of the mounting cavity is provided with a sliding groove, and both sides of the front side of the mounting cavity are provided with clamping grooves;

the adjusting screw is arranged in the installation cavity, the rear ends of the two sides of the adjusting screw are fixedly connected with sliding blocks, the sliding blocks are located on the inner sides of the sliding grooves, the adjusting screw is close to the rear side of the abutting block and is sleeved with a locating ring, two sides of the rear side of the locating ring are fixedly connected with clamping blocks, and the front side of the needle bar fixing piece is provided with an adjusting screw hole.

Preferably, anti-skid patterns are formed in the inner wall of the fixing hole, and the anti-skid patterns are arranged in a crisscross mode.

Preferably, the abutting block is in sliding connection with the mounting groove through a positioning groove and a positioning block, and the outer side of the positioning block is attached to the inner side of the positioning groove.

Preferably, the adjusting screw is rotationally connected with the abutting block through a sliding groove and a sliding block, the longitudinal section of the sliding groove is circular, the outer end of the sliding block is attached to the inner side of the sliding groove, the number of the sliding blocks is two, and the two sliding blocks are symmetrically distributed about the vertical central line of the adjusting screw.

Preferably, the front end in the adjusting screw outside has seted up the arc tangent plane, the quantity of arc tangent plane sets up to three, and is three the arc tangent plane distributes along the one end annular array in the adjusting screw outside, the opening has been seted up to the front end of adjusting screw, the opening sets up to the cross.

Preferably, the positioning ring is connected with the abutting block through clamping blocks and clamping grooves in a clamping mode, and the inner sides of the clamping grooves are attached to the outer sides of the clamping blocks.

In the technical scheme, the utility model has the technical effects and advantages that:

1. through holding the front end of adjusting screw, rotate adjusting screw, make adjusting screw at the inside backward running of adjusting screw, under the cooperation of slider and spout, make adjusting screw rear end can rotate at the installation cavity inside to promote the butt piece and move backward at the inside of mounting groove, fix the needle bar that is located the fixed orifices inside, thereby conveniently fix the needle bar of equidimension inside the needle bar mounting, promote the suitability of needle bar mounting.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a left side cross-sectional view of the present utility model;

FIG. 3 is a top cross-sectional view of the present utility model;

FIG. 4 is a front cross-sectional view of the present utility model;

fig. 5 is a schematic view of the expansion structure of the abutment block and the adjusting screw of the present utility model.

Reference numerals illustrate:

1. a needle bar fixing member; 2. a connecting rod; 3. a fixing hole; 4. anti-skid lines; 5. a mounting groove; 6. a positioning groove; 7. an abutment block; 8. an anti-slip pad; 9. a mounting cavity; 10. a chute; 11. a clamping groove; 12. adjusting a screw; 13. a slide block; 14. arc-shaped section; 15. an opening; 16. a positioning ring; 17. a clamping block; 18. a positioning block; 19. and adjusting the screw hole.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The utility model provides a needle bar connecting shaft of a sewing machine as shown in figures 1-5, which comprises

The needle bar fixing piece 1, one side of the needle bar fixing piece 1 is fixedly connected with a connecting rod 2, a fixing hole 3 is formed in the needle bar fixing piece 1, a mounting groove 5 is formed in the front side of the inner wall of the needle bar fixing piece 1, and positioning grooves 6 are formed in the top and the bottom of the mounting groove 5;

the anti-slip device comprises an abutting block 7, wherein an abutting block 7 is arranged in an installation groove 5, positioning blocks 18 are fixedly connected to the top and the bottom of the abutting block 7, an anti-slip pad 8 is arranged on the rear side of the abutting block 7, an installation cavity 9 is formed in the front side of the abutting block 7, a sliding groove 10 is formed in the inner side of the installation cavity 9, and clamping grooves 11 are formed in the two sides of the front side of the installation cavity 9;

the adjusting screw 12 is arranged in the installation cavity 9, the rear ends of the two sides of the adjusting screw 12 are fixedly connected with sliding blocks 13, the sliding blocks 13 are located on the inner side of the sliding groove 10, the adjusting screw 12 is sleeved with a locating ring 16 close to the rear side position of the abutting block 7, two sides of the rear side of the locating ring 16 are fixedly connected with clamping blocks 17, and the front side of the needle bar fixing piece 1 is provided with an adjusting screw hole 19.

Furthermore, in the above technical scheme, the inner wall of the fixing hole 3 is provided with the anti-skidding lines 4, the anti-skidding lines 4 are arranged in a crisscross manner, and the friction force between the fixing hole 3 and the needle bar contact surface is increased through the anti-skidding lines 4 arranged in the crisscross manner, so that the needle bar is fixed more firmly.

Further, in the above technical scheme, the abutting block 7 is slidably connected with the mounting groove 5 through the positioning groove 6 and the positioning block 18, the outer side of the positioning block 18 is attached to the inner side of the positioning groove 6, and the stability of the abutting block 7 running in the mounting groove 5 is improved through the positioning groove 6 and the positioning block 18.

Further, in the above technical scheme, the adjusting screw 12 is rotationally connected with the abutting block 7 through the sliding groove 10 and the sliding block 13, the longitudinal section of the sliding groove 10 is in a circular shape, the outer end of the sliding block 13 is attached to the inner side of the sliding groove 10, the number of the sliding blocks 13 is two, the two sliding blocks 13 are symmetrically distributed about the vertical center line of the adjusting screw 12, the adjusting screw 12 can rotate in the abutting block 7 through the matching of the sliding groove 10 and the sliding block 13, and the adjusting screw 12 can run more stably in the rotation process through the sliding blocks 13 symmetrically distributed about the vertical center line of the adjusting screw 12.

Further, in the above technical scheme, arc tangent planes 14 have been seted up to the front end in the adjusting screw 12 outside, and the quantity of arc tangent planes 14 sets up to three, and three arc tangent planes 14 are distributed along the one end annular array in the adjusting screw 12 outside, through the three arc tangent planes 14 that annular array set up, conveniently manual rotation adjusting screw 12, opening 15 has been seted up to the front end of adjusting screw 12, and opening 15 sets up to the cross, conveniently rotates adjusting screw 12 through the opening 15 that the cross set up.

Further, in the above technical scheme, the locating ring 16 is connected with the abutting block 7 through the clamping block 17 and the clamping groove 11 in a clamping way, the inner side of the clamping groove 11 is attached to the outer side of the clamping block 17, the locating ring 16 is conveniently sleeved on the outer side of the adjusting screw rod 12 through the clamping block 17 and the clamping groove 11 and then is fixed on the front side of the abutting block 7, the locating ring 16 is conveniently and subsequently further fixed through screws, the clamping groove 11 can be sealed through the clamping block 17, the sliding block 13 is prevented from falling from the inside of the sliding groove 10, and the adjusting screw rod 12 is conveniently connected with the abutting block 7.

The working principle of the utility model is as follows:

referring to fig. 1-5 of the specification, firstly, a needle bar is inserted into a fixing hole 3, then the front end of an adjusting screw 12 is pinched to rotate the adjusting screw 12, so that the adjusting screw 12 rotates and moves backwards in the adjusting screw hole 19, and under the cooperation of a sliding block 13 and a sliding groove 10, the adjusting screw 12 pushes an abutting block 7 to move backwards in the mounting groove 5 while rotating, so that the distance between the abutting block 7 and the inner wall of the rear side of the fixing hole 3 is adjusted, the needle bars with different sizes are fixed, and the applicability of the device is improved.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. A sewing machine needle bar connecting axle which characterized in that: comprising

The needle bar fixing device comprises a needle bar fixing piece (1), wherein a connecting rod (2) is fixedly connected to one side of the needle bar fixing piece (1), a fixing hole (3) is formed in the needle bar fixing piece (1), a mounting groove (5) is formed in the front side of the inner wall of the needle bar fixing piece (1), and positioning grooves (6) are formed in the top and the bottom of the mounting groove (5);

the anti-slip device comprises an abutting block (7), wherein the abutting block (7) is arranged in an installation groove (5), positioning blocks (18) are fixedly connected to the top and the bottom of the abutting block (7), an anti-slip pad (8) is arranged on the rear side of the abutting block (7), an installation cavity (9) is formed in the front side of the abutting block (7), a sliding groove (10) is formed in the inner side of the installation cavity (9), and clamping grooves (11) are formed in the two sides of the front side of the installation cavity (9);

adjusting screw (12), the inside of installation cavity (9) is provided with adjusting screw (12), the equal fixedly connected with slider (13) of rear end of adjusting screw (12) both sides, slider (13) are located spout (10) inboard, adjusting screw (12) are close to butt piece (7) rear side position department and have cup jointed holding ring (16), the equal fixedly connected with fixture block (17) in both sides of holding ring (16) rear side, adjusting screw (19) have been seted up to the front side of needle bar mounting (1).

2. The needle bar connecting shaft of a sewing machine according to claim 1, wherein: the inner wall of the fixing hole (3) is provided with anti-skidding patterns (4), and the anti-skidding patterns (4) are arranged in a crisscross manner.

3. The needle bar connecting shaft of a sewing machine according to claim 1, wherein: the abutting block (7) is in sliding connection with the mounting groove (5) through the positioning groove (6) and the positioning block (18), and the outer side of the positioning block (18) is attached to the inner side of the positioning groove (6).

4. The needle bar connecting shaft of a sewing machine according to claim 1, wherein: the adjusting screw (12) is rotationally connected with the abutting block (7) through the sliding groove (10) and the sliding blocks (13), the longitudinal section of the sliding groove (10) is circular, the outer ends of the sliding blocks (13) are attached to the inner sides of the sliding groove (10), the number of the sliding blocks (13) is two, and the two sliding blocks (13) are symmetrically distributed about the vertical central line of the adjusting screw (12).

5. The needle bar connecting shaft of a sewing machine according to claim 1, wherein: the front end in adjusting screw (12) outside has seted up arc tangent plane (14), the quantity of arc tangent plane (14) sets up to three, and is three the one end annular array distribution in adjusting screw (12) outside is followed in arc tangent plane (14), opening (15) have been seted up to the front end in adjusting screw (12), opening (15) set up to the cross.

6. The needle bar connecting shaft of a sewing machine according to claim 1, wherein: the positioning ring (16) is connected with the abutting block (7) in a clamping mode through the clamping block (17) and the clamping groove (11), and the inner side of the clamping groove (11) is attached to the outer side of the clamping block (17).