CN2498175Y

CN2498175Y - Rotary hook-straight needle disc sewing machine with wire clipper

Info

Publication number: CN2498175Y
Application number: CN 01255815
Authority: CN
Inventors: 李木吉
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-19
Filing date: 2001-09-19
Publication date: 2002-07-03
Anticipated expiration: 2011-09-19

Abstract

The utility model relates to knitting machinery technique field, in particular to a rotary hook straight needle desk type sewing machine having a thread tension mechanism. The utility model has technique proposals that: a thread tension mechanism comprising an edge cam, a bearing, an upper arm, a lower arm, a mandrel, a lever seat, a thread tension rod, a compression spring, a thread tension seat and a thread tension sleeve is arranged additionally on the sewing machine, wherein, the edge cam, the upper arm, the lower arm, the mandrel and the lever seat also form a lever mechanism, the edge cam fixedly arranged on a drive shaft of the sewing machine drives the lever to sway through the bearing fixedly arranged on the upper arm and contacting therewith, while the swaying of the lever drives the expansion and contraction of the thread tension rod in the thread tension seat, as so to drive the movement of the thread tension sleeve. When adopting the structure, the thread tension sleeve will clip on the seaming line instantly when required, thus the seaming line can form a stable thread loop during the stitching and withdrawing of the needle process and at the instant of taking up the thread by the thread taking-up hook, then the thread taking-up hook can take up the thread accurately.

Description

A kind of have a clamp mechanism revolve the desk-top sewing machine of hook staight needle

Technical field:

The utility model relates to technical field of knitting machinery, refer in particular to a kind of have a clamp mechanism revolve the desk-top sewing machine of hook staight needle.

Background technology:

Sewing machine be knitting industry one of visual plant, in order to sew up knitting garment piece, neck, cuff etc.In order to simplify the structure of sewing machine, improve the operating efficiency of sewing machine, people have done a lot of effort, have obtained very big effect.But along with the continuous appearance of novel chemical ﹠ blended fabric and the continuous variation of people's demand, the performance of sewing machine has also been proposed more and more higher requirement, original various sewing machine structures are showed its drawback gradually.As my " revolving the desk-top sewing machine of hook staight needle " in application on April 5 this year, though than before common looper shape sewing machine compare, it is more reliable to work, efficient also improves thereupon greatly, but also still exist some problems, as suture needle in the process of the withdraw of the needle, moment of take-up hook hook line, suture but is difficult to form stable wire loop, make take-up hook take-up accurately, thereby have influence on the quality of fabric.

Summary of the invention:

The purpose of this utility model just is at the deficiencies in the prior art part, and propose a kind of can make suture in the process of line is moved back in suture needle, moment of take-up hook hook yarn forms stable coil, thereby be convenient to the take-up hook accurately the hook line have a clamp mechanism revolve the desk-top sewing machine of hook staight needle.

The utility model is achieved by the following technical solution: install additional by edge cam on the sewing machine main body, bearing, upper arm, underarm, axle, lever seat, thread tension stud, the compression spring, tension seat, the clamp mechanism that the clamp cover is formed, wherein, edge cam, upper arm, underarm, axle and lever seat are formed a leverage again, edge cam is installed on the main shaft of sewing machine main body, bearing is fixedly arranged on the front end of upper arm by centering screw and contacts with the cross section curve of edge cam, lever seat is fixed on the support of sewing machine main body by screw, offering one on the lever seat runs through on it, the through hole of lower surface, the rear end of upper arm and the front end of underarm are by passing the through hole of upper arm rear end, the axle of the through hole of through hole on the lever seat and underarm front end and hinged with lever seat, the front end of thread tension stud that is arranged with the compression spring passes the tension seat on the pin arm that is fixed in the sewing machine main body and is connected with the clamp cover that is positioned at the tension seat other end, and the rear end of thread tension stud withstands on the rear end end face of underarm.

After adopting said structure, the clamp cover can be clamped suture in the moment of needs, thus make suture in the process of the suture needle withdraw of the needle, moment of take-up hook hook line forms stable wire loop, makes take-up hook hook line accurately.The utility model is simple in structure, compact, has good use value.

Description of drawings:

Accompanying drawing 1 is the utility model three-dimensional combination figure

Accompanying drawing 2 is the three-dimensional combination figure of the utility model clamp mechanism

Accompanying drawing 3 is the three-dimensional exploded view of the utility model clamp mechanism

See accompanying drawing 1-3, the utility model comprises: sewing machine main body A and clamp mechanism, clamp mechanism is by edge cam 1, bearing 2, upper arm 3, underarm 4, axle 5, lever seat 6, thread tension stud 7, compression spring 8, tension seat 9, the clamp mechanism that clamp cover 10 is formed, wherein, edge cam 1, upper arm 3, underarm 4, axle 5 and lever seat 6 are formed a leverage again, edge cam 1 is installed on the principal axis A 1 of sewing machine main body A, bearing 2 is fixedly arranged on the front end of upper arm 3 by centering screw 11 and contacts with the cross section curve of edge cam 1, lever seat 6 is fixed on the support A2 of sewing machine main body A by screw 12, offering one on the lever seat 6 runs through on it, the through hole 61 of lower surface, the front end of the rear end of upper arm 3 and underarm 4 is by passing the through hole 31 of upper arm 3 rear ends, the axle 5 of the through hole 41 of through hole 61 on the lever seat 6 and underarm 4 front ends and hinged with lever seat 6, the front end that is arranged with the thread tension stud 7 of compression spring 8 passes the tension seat 9 on the pin arm A3 that is fixed in sewing machine A main body and overlaps 10 with the clamp that is positioned at tension seat 9 other ends and is connected, and the rear end of thread tension stud 7 withstands on the rear end end face of underarm 4.

The specific embodiment:

After the edge cam 1 of driving shaft A1 one end that is installed in the sewing machine main body A rotates with driving shaft A1, edge cam 1 promptly drives the leverage swing by the bearing 2 that is in contact with it, during the swing of leverage, because of the rear end end face of the underarm 4 of leverage and the back end in contact of thread tension stud 7, make thread tension stud 7 flexible back and forth in tension seat 9, drive 10 actions of clamp cover, after the angle of adjusting edge cam 1 in advance, clamp cover 10 just can be clamped suture in needs, thereby make suture needle in withdraw of the needle process, the moment of take-up hook hook line, suture can form stable wire loop, makes the take-up hook purpose of hook line exactly thereby reach.

Claims

One kind have a clamp mechanism revolve the desk-top sewing machine of hook staight needle, comprise sewing machine main body (A), it is characterized in that: also include by edge cam (1), bearing (2), upper arm (3), underarm (4), axle (5), lever seat (6), thread tension stud (7), compression spring (8), tension seat (9), the clamp mechanism that clamp cover (10) is formed, wherein, edge cam (1), upper arm (3), underarm (4), axle (5) and lever seat (6) are formed a leverage again, edge cam (1) is installed on the main shaft (A1) of sewing machine (A) main body, bearing (2) is fixedly arranged on the front end of upper arm (3) by centering screw (11) and contacts with the cross section curve of edge cam (1), lever seat (6) is fixed on the support (A2) of sewing machine (A) main body by screw (12), offering one on the lever seat (6) runs through on it, the through hole of lower surface (61), the front end of the rear end of upper arm (3) and underarm (4) is by passing the through hole (31) of upper arm (3) rear end, the axle (5) of the through hole (41) of through hole (61) on the lever seat (6) and underarm (4) front end and hinged with lever seat (6), the front end of thread tension stud (7) that is arranged with compression spring (8) passes the tension seat (9) on the pin arm (A3) that is fixed in sewing machine (A) main body and is connected with the clamp cover (10) that is positioned at tension seat (9) other end, and the rear end of thread tension stud (7) withstands on the rear end end face of underarm (4).