CN201031302Y

CN201031302Y - Trapping mechanism of computer flush joint machine

Info

Publication number: CN201031302Y
Application number: CN 200720147542
Authority: CN
Inventors: 邱卫明; 蔡敏华
Original assignee: ZHEJIANG XINJIEKE SEWING MACHINE CO Ltd
Current assignee: Jack Technology Co Ltd
Priority date: 2007-04-28
Filing date: 2007-04-28
Publication date: 2008-03-05
Anticipated expiration: 2017-04-28

Abstract

The utility model pertains to sewing machine technology, particularly relates to a thread-clamping device for a computerized lockstitch sewing machine, comprising a holding frame (12), a small thread-clamping nut (9), a thread-clamper (6), a right pass device (8), a take-up lever (7), a pass device (4), a left pass device (5), a machine needle (2) and a sewing machine ram-head (3). The utility model is characterized in that a thread grip is arranged near the thread clamper (6); the thread grip comprises a grip head and a drive unit for the grip head, the grip head of the drive unit makes side-to-side movement; and the sewing thread passes through the small thread-clamping nut (9) to the thread clamper (6). The utility model is capable to draw back the extra sewing thread remained in the sewing track by side-to-side movements of the thread grip, therefore, and the sewed product is free of rough needling track and the appearance is nice.

Description

A kind of wire-clamping device of computer flat seam machine

Technical field:

The utility model belongs to sewing machine technique, has particularly designed a kind of wire-clamping device of special use, stitching not attractive in appearance when starting at the computer flat seam machine and the improvement carried out.

Background technology:

Common computer flat seam machine stitching when starting generally all is to be wound in one bulk, this be since the computer flat seam machine after last automatic shearing when once stopping, the end of a thread is retained in the eedle hole long, when computer controlled sewing machine starts, when eedle down moves, drive suture thorn cloth, long the end of a thread is retained in the cloth below, this long the end of a thread will form the stitching of a nest like on cloth in ensuing sewing process, influences the attractive in appearance and sewing quality of stitchbonded fabric.

The utility model content:

The purpose of this utility model is the wire-clamping device of a kind of special use of design, is a kind of wire-clamping device that forms the computer flat seam machine of nest like stitching can stop the computer flat seam machine to start the time.

The wire-clamping device of a kind of computer flat seam machine of the utility model, comprise bracing frame, little tension regulating thumb nut, rightly cross line, thread take-up tension lever, tension disk, cross line, line, eedle, head of sewing machine are crossed in a left side, it is characterized in that a wire grip being set on the tension disk side, this wire grip comprises pull wire head and drive unit thereof, drive unit drives pull wire head and does side-to-side movement, and the suture that comes out from little tension regulating thumb nut leads to tension disk through pull wire head.

Described drive unit can be made of air cylinder device, comprises cylinder, air inlet pipe joint, air inlet pipe, escape pipe joint, escape pipe, and the pull wire head that is loaded on the cylinder piston rod top has the radial direction through hole that passes for suture.

Described drive unit can be made of stepper motor, and an end of fork is fixed on motor shaft, and the other end is a pull wire head, and it is made of the structure that the roller of walking around for suture is housed in the prong.

Described drive unit can be made of electromagnet, and the pull wire head that is loaded on armature top has the radial direction through hole that passes for suture.

The utility model is owing to utilize the drive unit that can produce side-to-side movement to drive the pull wire head side-to-side movement of pile warp suture, and the side-to-side movement that utilizes pull wire head retracts and remains in suture unnecessary in the suture operating path, can not stay the nest like stitching, reach stitching purpose attractive in appearance.Because drive unit is installed in by the tension disk of head of sewing machine, make it keep stable, simple in structure, it is few to improve number of spare parts, and the stitching of formation is attractive in appearance, has improved the attractive in appearance and sewing quality of stitchbonded fabric, and has reduced production cost.

Description of drawings:

Fig. 1 is the schematic diagram of the utility model embodiment 1 normal sewing state.

Fig. 2 is the schematic diagram of the utility model embodiment 1 starting state.

Fig. 3 is the schematic diagram of the utility model embodiment 2 starting states.

Fig. 4 looks enlarged drawing for the stepper motor device right side among Fig. 3.

Fig. 5 is the schematic diagram of the utility model embodiment 3 starting states.

The specific embodiment:

With reference to Fig. 1, Fig. 2, embodiment 1 adopts cylinder as drive unit, comprise cylinder 14, tracheae 13, left gas-tpe fitting 11, right gas-tpe fitting 15, air inlet pipe joint 20, air inlet pipe 21, escape pipe joint 19, escape pipe 18, the pull wire head 16 that is made of slide block that is loaded on cylinder piston rod 17 tops has the radial direction through hole (not shown) that passes for suture.Cylinder 14 is fixed on the other bracing frame 12 of the tension disk that is positioned at head of sewing machine, reinstates screw together with bracing frame 12 1 again and be fastened on the head of sewing machine 3, make radial direction through hole on the pull wire head 16 just in time between little tension regulating thumb nut 9 and tension disk 6.Suture 1 operating path position as shown passes little tension regulating thumb nut 9 successively, and pull wire head 16, tension disk 6, slow line collude 4, the right line 8, thread take-up tension lever 7, a left side crossed crossed line 5, eedle 2.

With reference to Fig. 3, Fig. 4, embodiment 2 adopts stepper motor 23 as drive unit, and stepper motor 23 is fixed on the seat board 24, and seat board 24 is fixed on the support plate 22, reinstates screw together with seat board 24 1 again and is fastened on the head of sewing machine 3.One end of fork 25 is fixed in the rotating shaft of stepper motor 23, and it is pull wire head that the other end is made prong, and its structure by the roller 26 that the confession suture that is sleeved in the prong on the bearing pin 27 is walked around constitutes.Among the figure mark 28 for be used for fixing fork 25, with the nut of motor shaft threaded engagement.

With reference to Fig. 5, embodiment 3 adopts electromagnet 31 as drive unit, and the pull wire head 16 that is loaded on the top of electromagnet armature 30 is constructed identical with embodiment 1.

During the starting of computer flat seam machine, tension disk 6 clamps suture 1, eedle 2 is being with suture 1 to move downward, after the computer flat seam machine is rotated a circle, when just eedle 2 is once got back to initial position back and forth, cylinder or electromagnet or stepper motor are started working, order about pull wire head 16 or roller 26 moves right, this moment, tension disk 6 unclamped, the suture 1 that passes pull wire head 16 simultaneously is also and then toward right motion, and tension suture 1 also back spurs one section suture, makes suture produce one section labyrinth, the end of a thread residual behind the trimming that stopped last time is regained the formation of nest like stitching in the time of to stop the starting that suture 1 causes owing to the end of a thread is long like this.When eedle 2 down motion once more, cylinder or electromagnet or stepper motor reset, and when eedle 2 stung lowermost end, pull wire head 16 reset to the original place left, and the computer flat seam machine begins operate as normal.

Claims

1. the wire-clamping device of a computer flat seam machine, comprise bracing frame (12), little tension regulating thumb nut (9), tension disk (6), rightly cross line (8), thread take-up tension lever (7), cross line (4), line (5), eedle (2), head of sewing machine (3) are crossed in a left side, it is characterized in that a wire grip being set on tension disk (6) side, wire grip comprises pull wire head and drive unit thereof, drive unit drives pull wire head and does side-to-side movement, and the suture that comes out from little tension regulating thumb nut (9) leads to tension disk (6) through pull wire head.

2. the wire-clamping device of a kind of computer flat seam machine according to claim 1, it is characterized in that described drive unit is made of air cylinder device, comprise cylinder (14), air inlet pipe joint (20), air inlet pipe (21), escape pipe joint (19), escape pipe (18), the pull wire head (16) that is made of slide block that is loaded on cylinder piston rod (17) top has the radial direction through hole that passes for suture.

3. the wire-clamping device of a kind of computer flat seam machine according to claim 1, it is characterized in that described drive unit is made of stepper motor, one end of fork (25) is fixed on motor shaft, and the other end is a pull wire head, and it is made of the structure that the roller of walking around for suture (26) is housed in the prong.

4. the wire-clamping device of a kind of computer flat seam machine according to claim 1 is characterized in that described drive unit is made of electromagnet, and the pull wire head (16) that is loaded on armature top has the radial direction through hole that passes for suture.