CN210481707U

CN210481707U - Needle plate assembly of double-thread arching stitch of flat seaming machine

Info

Publication number: CN210481707U
Application number: CN201920966038.2U
Authority: CN
Inventors: 王雪贵; 郑路; 王雪平; 余光明; 徐眉; 蔡雨贵
Original assignee: High Fashion China Co ltd
Current assignee: High Fashion China Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-05-08
Anticipated expiration: 2029-06-25

Abstract

The utility model relates to a sewing machine accessory. The needle plate component can enable the middle of a fabric to arch when double lines are pressed quickly, so that the product quality is improved, and the production efficiency is improved. The technical scheme is as follows: a needle plate component of a double-thread arch stitch of a flat seaming machine comprises a needle plate which is fixed on a flat seaming machine platen through screws and is matched with a flat seaming machine needle, and a presser foot which is fixed on a flat seaming machine pressure bar and is matched with a cloth feeding rack on the flat seaming machine platen; the method is characterized in that: a cantilever-shaped stop lever which extends backwards and hangs at the center of the needle hole is manufactured on the needle plate, and the width of the stop lever is smaller than that of a needle thread stop lever of a presser foot of the flat seaming machine) so that the width of a flat seam stitch formed by a sewing bottom thread is smaller than the distance of two flat seam stitches formed by needle threads, thereby forming the arching effect of the central parts of the two needle thread stitches.

Description

Needle plate assembly of double-thread arching stitch of flat seaming machine

Technical Field

The utility model relates to a sewing machine annex, concretely relates to faller subassembly with arching in the middle of the surface fabric when can press the double-line fast.

Background

The high-grade knitted product has a decorative process of 'convex strips', specifically, two upper threads are sewn on the fabric at one time, and an arch is formed between the stitches of the two upper threads, so that the decorative process has the effect of 'convex strips'. The prior art is that the garment piece is folded and ironed manually, the bottom line of a machine is adjusted to be very tight, and then shrinkage and ironing are carried out after the line is pressed, so that the process is complex, the effect is not ideal, and the process requirements of customers cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough in the above-mentioned background, provide a faller subassembly that makes arching in the middle of the surface fabric when can press the double-line fast to improve product quality, improve production efficiency.

The utility model provides a technical scheme is:

a needle plate component of a double-thread arch stitch of a flat seaming machine comprises a needle plate which is fixed on a flat seaming machine platen through screws and is matched with a flat seaming machine needle, and a presser foot which is fixed on a flat seaming machine pressure bar and is matched with a cloth feeding rack on the flat seaming machine platen; the method is characterized in that: a cantilever-shaped stop lever which extends backwards and hangs at the center of the needle hole is manufactured on the needle plate, and the width of the stop lever is smaller than that of a needle thread stop lever of a presser foot of the flat seaming machine) so that the width of a flat seam stitch formed by a sewing bottom thread is smaller than the distance of two flat seam stitches formed by needle threads, thereby forming the arching effect of the central parts of the two needle thread stitches.

The width and the height of the stop lever are both smaller than 1 mm.

The upper surface of the stop lever is flush with the upper surface of the needle plate.

The thickness of the needle plate is 2-3mm.

The utility model has the advantages that: the needle plate component of the double-thread arching stitch of the flat seaming machine can effectively make a convex strip on the fabric, can ensure the sewing quality (the stitches of two upper threads can be ensured to be parallel to each other and the distance is constant), and greatly improves the working efficiency; in addition, use the utility model discloses do not increase operating personnel's the operation degree of difficulty, convenient popularization receives the welcome of enterprise.

Drawings

Fig. 1 is a schematic view of the structure of the needle plate in the present invention.

Fig. 2 is a schematic sectional structure view of a-a in fig. 1.

Fig. 3 is a front view of the middle presser foot of the present invention.

Fig. 4 is a schematic top view of the middle presser foot of the present invention.

Fig. 5 is a schematic view of the middle presser foot of the present invention.

FIG. 6 is a schematic view showing the fitting state of the presser foot and the needle plate according to the present invention (a top view, wherein the needle plate is shielded by the presser foot and only a little is exposed at the needle hole of the presser foot).

Fig. 7 is a front view structure diagram (front view) of the fabric after double sewing.

FIG. 8 is a bottom view of the fabric after the bi-thread stitching.

Figure 9 is a rear view structural schematic (back view) of the panel after stitching the bi-thread.

FIG. 10 is a schematic illustration of the "boss" step-forming process.

Detailed Description

The following further description is made with reference to the embodiments shown in the drawings.

In the fabric 10 of fig. 7 to 9, two flat stitches 11 (upper stitches) with a constant gauge are provided on the front side, and a flat stitch 12 (lower stitch) is provided on the back side. The middle of the two flat stitches is a protruding boss 10-1.

The utility model provides a flat seaming machine double-thread arch-forming stitch needle plate component, including with flat seaming machine needle matched with needle plate 1 and with the presser foot of the work feed rack matched with on the flat seaming machine platen. The needle plate is fixed on the flat seaming machine platen through screws (the middle part of the needle plate is provided with a needle hole 3 for the needle to pass through for sewing matching, and the edge of the needle plate is provided with a through hole 4 for the screw to pass through for fixing the needle plate); the presser foot is fixed on the flat seaming machine pressure lever. The presser foot comprises a connector 5 connected with a presser bar of the flat seaming machine and a presser foot plate 6 hinged with the connector; the presser foot plate is provided with a needle hole 8 for inserting a needle, and an upper thread stop rod which is suspended backwards for a certain distance (about 2cm) is arranged in the needle hole. These are all similar to the existing structures.

The utility model discloses an improvement lies in: the needle plate is provided with a cantilever-shaped stop lever 3-1 which extends backwards (back to the direction of operators) and is suspended in the center of the needle hole, and the width of the stop lever (the distance in the vertical direction of the figure 1) is smaller than the width of the upper thread stop lever 6-1 on the presser foot plate (also smaller than the distance between two needles of the flat seaming machine). When the sewing machine is in work, the two needles respectively puncture and sew the fabric on the left side and the right side of the upper thread stop lever (when sewing, the fabric gradually advances towards the left side direction of the figure 6), so that the transverse width of a flat seam stitch (formed by a bottom thread) formed after sewing is smaller than the distance between flat seam stitches formed by two upper threads (the distance between the two flat seam stitches is about 3 mm), and the effect that the fabric at the central parts of the two upper threads is arched upwards (the arching height is determined according to requirements) is formed.

Preferably, the width and height (the dimension in the left-right direction of fig. 2) of the stop lever are both less than 1mm (preferably 0.8 mm).

The needle plate is arranged on the flat seaming machine platen and then is matched with the position of the presser foot; FIG. 6 shows the presser foot just pressing on the upper surface of the needle board after the presser bar of the flat seaming machine moves downwards. As can be seen from the figure: the needle hole position on the foot pressing plate is just corresponding to the needle hole position of the needle plate up and down, and the stop lever is also just shielded by the surface line stop lever.

The working principle of the utility model is (see fig. 10): the flat seaming machine is electrified to start, and the sewn fabric advances under the driving force exerted by the cooperation of the presser foot and the cloth feeding rack; the sewing process of each needle puncture after the sewn fabric enters the bottom end of the presser foot is as follows: the two needles carry upper threads 11 respectively to perform lower puncture sewing on the fabric at the left side and the right side of the upper thread stop lever, and the bottom threads 12 are hooked and penetrated back and forth between the two upper threads (the lower part passes through the fabric and the part acted by the rotating shuttle) exposed on the lower surface of the fabric under the action of the rotating shuttle (a picture of a picture 10); then when the two needles lift upwards to drive the upper thread to be tightened and the bottom thread to be tightened simultaneously, the upper thread retracts to the position of the puncture hole of the fabric to form a flat seam stitch, and the bottom thread is tightened to a degree corresponding to the width of the blocking rod so as to form a flat seam stitch (see the b, c and d pictures of figure 10; the width of the flat seam stitch is determined by the width of the blocking rod); because the width of the flat seaming stitch is smaller than the distance between the two flat seaming stitches, the fabric between the two upper threads is protruded upwards.

The above processes are repeated and circulated, and the sewing process is continuously carried out; the protrusion between the two facial threads is connected to form a convex strip.

Finally, it should be noted that the above-mentioned embodiments illustrate only specific embodiments of the invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims

1. A needle plate component of a double-thread arch stitch of a flat seaming machine comprises a needle plate (1) which is fixed on a flat seaming machine platen through screws so as to be matched with a flat seaming machine needle and a presser foot which is fixed on a flat seaming machine pressure bar so as to be matched with a cloth feeding rack on the flat seaming machine platen; the method is characterized in that: the needle plate is provided with a cantilever-shaped stop lever (3-1) which extends backwards and is suspended in the center of the needle hole, and the width of the stop lever is smaller than that of an upper thread stop lever (6-1) of the presser foot of the flat seaming machine, so that the width of a flat seam stitch formed by a sewing bottom thread is smaller than the distance of two flat seam stitches formed by the upper thread, and the arching effect of the central part of the two upper thread stitches is formed.

2. The needle bar assembly for double-looping stitches of a flat seaming machine as recited in claim 1, wherein: the width and the height of the stop lever are both smaller than 1 mm.

3. The needle bar assembly for double-looping stitches of a flat seaming machine as recited in claim 2, wherein: the upper surface of the stop lever is flush with the upper surface of the needle plate, and the bottom end surface of the stop lever is 1.5-2mm higher than the bottom end surface of the needle plate.

4. A needle plate assembly for double-looping stitches of a flat seaming machine as recited in claim 3, wherein: the thickness of the needle plate is 2-3mm.