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A kind of tight sewing method of sewing machine

A sewing machine and tight seam technology, which is applied in the field of tight sewing of sewing machines, can solve problems such as loose thread ends, unadjustable stitch distance, and falling off, so as to achieve the effect of increasing aesthetics, improving sewing effect, and not easy to fall off

Active Publication Date: 2019-12-10
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when the lockstitch sewing machine trims the thread at the end of sewing, because the stitch length cannot be adjusted, the bottom thread end of a stitch length cannot form self-locking, and two thread ends, one long and one short, appear at the trimming place of the material to be sewn, and two The thread ends are one long and one short, one front and one back, resulting in the thread ends left after thread trimming are not firm, and will fall off with a slight pull, affecting the sewing effect
In addition, the thread ends are long and lack aesthetic feeling

Method used

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  • A kind of tight sewing method of sewing machine
  • A kind of tight sewing method of sewing machine
  • A kind of tight sewing method of sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: The method of two drivers working at the same time:

[0034] Such as Figure 1-5 shown. A method for close seaming of a sewing machine, comprising the steps of:

[0035] A. The controller issues a thread trimming command.

[0036] B. The controller controls the action of the driver to drive the action of the sealing device; the stitch distance of the seal is set when the driver is installed.

[0037] C. The operation of the sewing machine is based on the set number of stitches for tight sewing, and the number of stitches is preset by the controller.

[0038] D. The controller controls the second action of the driver and then drives the thread trimmer to complete the thread trimming action, and then controls the first stop of the driver.

[0039] The tight seam method of this embodiment can reduce the amount of cloth feeding during thread trimming, and the thread end becomes shorter. Due to a small section of close stitching or variable needle pitch se...

Embodiment 2

[0058] Embodiment 2: The structure of this embodiment 1 is the same, but the sealing method is different. The difference is that this embodiment is a method in which two drivers do not work at the same time:

[0059] Such as Figure 1-5 shown. The concrete steps of this embodiment are as follows:

[0060] A. The controller issues a thread trimming command;

[0061] B. The controller controls the movement of the electromagnet assembly 10, drives the connecting rod 1 to rotate, and then drives the connecting rod 2 3 to move to the designated position, and keeps moving;

[0062] C. The sewing machine runs the number of stitches set by the controller again;

[0063] The controller controls the electromagnet assembly 10 to stop;

[0064] D. The controller controls the thread trimming electromagnet 7 to perform the thread trimming action.

Embodiment 3

[0065] Embodiment 3: The difference between this embodiment and Embodiment 1 lies in the tight seam structure, which leads to the difference in the tight seam method:

[0066] The tight seam structure of the present embodiment is as follows:

[0067] Such as Figure 6 and Figure 7 shown. Described sealing device comprises crank one 23 that is connected on the driver one, and crank one 23 is connected with crank two 25 by connecting rod three 24, and crank two 25 is connected on the feeding shaft 26, and on the feeding shaft 26 also passes tooth bracket Seat 27 is connected with tooth frame 28, drives crank one 23, connecting rod three 24, crank two 25 to control feed shaft 26 to rotate by driver one during normal sewing, and feed shaft 26 controls tooth frame 28 motion by tooth frame seat 27, with this Control the stitch length when sewing. When tight seaming is required, the controller controls the driver to stop feeding or perform micro-feeding to achieve the purpose of...

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Abstract

The invention belongs to the technical field of sewing equipment and particularly relates to a dense stitching method of a sewing machine. The method includes the following steps that firstly, a controller sends out a thread cutting instruction; secondly, the controller controls a first driver to act so as to drive a dense stitching device to move; thirdly, the sewing machine conducts dense stitching according to the number, set by the controller, of stitches; fourthly, the controller controls a second driver to act so as to drive a thread cutting device to complete a thread cutting action. The method can solve the problems that in the prior art, thread ends are different in length and not attractive after thread cutting and the thread ends are too long after thread cutting, and can adjust the stitch length during sewing through a mechanical structure. A small section of dense stitching or variable-stitch-length sewing is conducted before thread cutting, so that the thread ends become short after thread cutting, the left thread ends are firmly connected and not likely to fall off after being pulled, the sewing effect is improved, and the attractiveness is improved.

Description

technical field [0001] The invention belongs to the technical field of sewing equipment, in particular to a method for tight sewing of a sewing machine. Background technique [0002] A lockstitch sewing machine is mainly a machine that uses a sewing thread to form a stitch on the sewing material to interweave or sew one or more layers of sewing material. It is usually divided into thin material and thick material. Lockstitch sewing machine can sew fabrics such as cotton, linen, silk, wool, artificial fiber and leather, plastic, paper and other products. Thin material is generally used for knitting, underwear, shirts, Uniforms, etc., thick materials are generally used in all kinds of sportswear, jeans, fashion, coats, shoes and hats, leather jeans, bags, etc. Lockstitch sewing machine is the most basic type of sewing equipment. [0003] At present, when the lockstitch sewing machine trims the thread at the end of sewing, because the stitch length cannot be adjusted, the bott...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B69/00D05B69/10D05B69/08
CPCD05B69/00D05B69/08D05B69/10
Inventor 丁建明潘建国
Owner JACK SEWING MASCH CO LTD