CN210684165U

CN210684165U - Automatic thread end shearing device of bar tacking machine

Info

Publication number: CN210684165U
Application number: CN201921368783.3U
Authority: CN
Inventors: 江坤富
Original assignee: Jintai Industry Co Ltd; Ningbo Zhenhai Tongxin Electromechanical Technology Co Ltd
Current assignee: Jintai Industry Co ltd; Ningbo Tongxin Sewing Machine Automation Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-06-05
Anticipated expiration: 2029-08-22

Abstract

The utility model provides an automatic thread end cutting device of a bar tacking machine. The automatic thread end shearing device comprises a needle plate, wherein the needle plate is provided with a shearing device, a power device and a vacuum suction device, the shearing device comprises an axial screw, a fixed blade, a movable blade, an elastic pressure plate and a nut, the fixed blade, the movable blade, the elastic pressure plate and the nut are sequentially sleeved on the axial screw from bottom to top, the fixed blade is 2.4 mm thick and is further fixed through the screw so as not to rotate, the nut enables the elastic pressure plate to tightly press the movable blade, the power device drives the movable blade to rotate so that the movable blade and the fixed blade form a thread shearing opening, the needle plate at the bottom of the thread shearing opening is also provided with a bottom plate thread end hole, a long thread passes through the bottom plate thread end hole and is sheared by the thread shearing opening, and meanwhile, a dropped thread end is sucked by the vacuum suction device, and the defects that the original thread end is not short enough and is not trimmed are overcome due, the labor is saved, and meanwhile, the working efficiency is greatly improved.

Description

Automatic thread end shearing device of bar tacking machine

Technical Field

The utility model relates to a noose machine, specific automatic thread end cutting device of noose machine that says so.

Background

The knotting machine is also called a date sewing machine or a knotting machine, is usually used for stitch reinforcement and is generally suitable for the clothing manufacturing industry, a section of redundant long thread end is reserved after the clothes are sewn to the bottom of each time by the knotting machine on the market, and the redundant long thread end is usually cut off by the knotting machine in order to prevent the redundant long thread end from being fried. The existing bar tacking machine consists of a power device, a shearing device, a vacuum suction device and a needle plate, wherein the shearing device comprises an axis screw which is fixed on the needle plate, a fixed blade, a movable blade and a spring are sequentially sleeved on the axis screw from bottom to top, a nut for limiting and fixing is further screwed on the axis screw, the fixed blade is further fixed through a bolt, so that the fixed blade cannot rotate, the power device is used for driving the movable blade to rotate, so that the movable blade is matched with the fixed blade to form a wire shearing port for shearing wires, the vacuum suction device comprises a sucker, an air pipe and a negative pressure air nozzle, the sucker is opposite to the wire shearing port formed by the movable blade and the fixed blade, redundant long wire ends are sucked to a bottom plate wire end hole of the needle plate through the sucker, the long wire ends can hang down from the bottom plate wire end hole on the needle plate, and the movable blade is matched with the fixed blade, the cut thread ends are smoothly cut off, and the cut long thread ends are sucked into a designated collecting barrel along an air pipe by a vacuum suction device to finish an automatic cutting action.

However, in the existing shearing device, the movable blade is pressed by a common compression spring and works together with the fixed blade to shear the thread end, and when the thread is actually sheared, the phenomena of occasional continuous shearing, irregular shearing and the like exist because the movable blade and the fixed blade are not compactly matched; in addition, the fixed blade of the existing automatic thread end shearing device is too thick to be 7.4 mm, so that the situation that the residual thread end after shearing is too long is caused, the thread end needs to be manually sheared for two times, and the labor intensity is increased.

SUMMERY OF THE UTILITY MODEL

In view of the defect that the automatic thread end cutting device of the existing bar tacking machine exists, the utility model aims to solve the technical problem that: the automatic thread trimmer head device with the movable blade and the fixed blade matched more compactly is provided; meanwhile, the automatic thread end shearing device can not cause thread end residue after being used.

In order to achieve the above object, according to one aspect of the present invention, the present invention is realized by the following technical measures: an automatic thread end trimming device of a bar tacking machine, comprising:

a needle plate, wherein the needle plate is provided with a shearing device, a power device and a vacuum suction device,

the shearing device comprises an axial screw which is fixed on the needle plate, the axial screw is sequentially sleeved with a fixed blade, a movable blade and an elastic pressure plate from bottom to top, the axial screw at the top of the elastic pressure plate is also screwed with a nut, parts are fastened through the nut, the fixed blade is fixed through a screw, so that the fixed blade is directly fixed on the needle plate and cannot move,

the power device is used for driving the movable blade to rotate so that the movable blade is matched with the fixed blade to cut the thread,

the vacuum suction device enables the thread end to be positioned at a thread cutting port formed by the fixed blade and the movable blade,

the needle plate is also provided with a bottom plate thread head hole which is arranged at the bottom of the thread cutting opening.

According to the automatic thread end shearing device of the bar tacking machine, the movable blade can press the fixed blade tightly through the design of the elastic pressing plate, so that the shearing force of the shearing edge is larger.

Further, the thickness of the stationary blade was 2.4 mm. The remaining length of the thread end after cutting is shorter because the fixed blade is thinner.

Further, power device includes cylinder, cylinder transmission connecting block and special-shaped connecting rod, cylinder transmission connecting block is fixed with the cylinder, is connected through the connector between cylinder transmission connecting block and the special-shaped connecting rod, and special-shaped connecting rod still is fixed with movable blade.

Compared with the prior art, the utility model has the advantages of: the defects that the original thread ends are not short enough and are not trimmed are overcome, labor is saved, and meanwhile the working efficiency is greatly increased.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 is a schematic view of the parts of an automatic thread end cutting device of a bar tacking machine of the present invention.

Description of reference numerals: 1. a needle plate; 2. an axial screw; 3. fixing a blade; 4. a movable blade; 5. an elastic pressure plate; 6. a nut; 7. a cylinder; 8. the cylinder transmission connecting block; 9. a connector; 10. a special-shaped connecting rod; 11. a suction cup; 12. an air duct; 13. a negative pressure air nozzle; 14. bottom plate line head hole.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1, the automatic thread trimmer head device of the bar tacking machine provided by this embodiment includes a needle plate 1, a shearing device, a power device and a vacuum suction device are fixed on the needle plate 1, the shearing device is composed of an axis screw 2, a fixed blade 3, a movable blade 4, an elastic pressure plate 5 and a nut 6, wherein the axis screw 2 is vertically fixed on the needle plate 1, the fixed blade 3, the movable blade 4, the elastic pressure plate 5 and the nut 6 are sequentially sleeved on the axis screw 2 from bottom to top, and are fastened by the nut 6, the fixed blade 3 is selected from a thinner thickness of 2.4 mm, the rear side of the fixed blade 3 is further fixed by the screw to prevent the fixed blade 3 from rotating, the power device is composed of a cylinder 7, a cylinder transmission connecting block 8, a connector 9 and a special-shaped connecting rod 10, one side of the cylinder transmission connecting block 8 is fixed with the cylinder 7, connect through connector 9 between 8 opposite sides of cylinder transmission connecting block and the special-shaped connecting rod 10, special-shaped connecting rod 10 still is fixed with movable blade 4, the drive through cylinder 7 finally makes movable blade 4 can rotate round axle position screw 2, make movable blade 4 and fixed blade 3 form the mouth of cutting of a trimming, still be equipped with a bottom plate thread end hole 14 on the faller 1 of mouth of cutting bottom and be used for crossing the line, above-mentioned vacuum getter device is from up including sucking disc 11 down in proper order, tuber pipe 12 and negative pressure air cock 13, sucking disc 11 is relative and is fixed on faller 1 with the mouth of cutting that movable blade 4 and fixed blade 3 formed.

When the tacking work is finished to the tail part every time, redundant long thread ends are sucked to a bottom plate thread end hole 14 of the needle plate 1 through the sucking disc 11, the long thread ends can hang down from the bottom plate thread end hole 14 on the needle plate 1, at the moment, an electromagnetic valve of the tacking machine receives a signal instruction to control the air cylinder 7, a piston of the air cylinder 7 moves forwards once, the air cylinder transmission connecting block 8 drives the special-shaped connecting rod 10, the special-shaped connecting rod 10 pushes the movable blade 4, the movable blade 4 is matched with the fixed blade 3 to smoothly cut the thread ends under the thrust of the air cylinder 7 and the pressing of the elastic pressing plate 5, and the cut long thread ends can be sucked into a specified collecting barrel along the air pipe 12 by the vacuum suction device to finish an automatic cutting action.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various changes and modifications may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automatic thread trimmer head device of bar tacking machine which characterized in that includes:

2. The automatic thread trimmer according to claim 1, wherein the fixed blade has a thickness of 2.4 mm.

3. The automatic thread trimming head device of a bar tacking machine according to claim 1, wherein the power device comprises a cylinder, a cylinder transmission connecting block and a special-shaped connecting rod, the cylinder transmission connecting block is fixed with the cylinder, the cylinder transmission connecting block and the special-shaped connecting rod are connected through a connector, and the special-shaped connecting rod is further fixed with the movable blade.