Loosening prevention sewing machine needle rod fixing structure

An anti-loosening and sewing machine technology, which is applied to needle holders for sewing machines, sewing machine components, sewing equipment, etc., can solve problems such as loosening of needle clamp screws, damage to machine needles and sewing machine hardware, and movement of machine needles up and down, achieving a simple structure, Fixed and solid effect

Active Publication Date: 2015-10-07
WUJIANG ZHENYU SEWING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional method is to fix the sewing machine needle with the needle clamp screw. When the sewing machine is working, the needle clamp screw will loosen due to the vibration of the needle movement due to the continuous up and down movement of the sewing machine needle, causing the needle to move up and down and affecting the sewing machine. Sewing effect, even lead to damage to the needle, sewing machine hardware, so there are defects

Method used

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  • Loosening prevention sewing machine needle rod fixing structure
  • Loosening prevention sewing machine needle rod fixing structure
  • Loosening prevention sewing machine needle rod fixing structure

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Embodiment Construction

[0016] In order to deepen the understanding of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, which are only used to explain the present invention and do not limit the protection scope of the present invention.

[0017] Such as figure 1 As shown, a needle bar fixing structure for an anti-loosening sewing machine includes a needle bar 1, a sealing sleeve 2, a piston rod 3 and a piston 4; the interior of the needle bar 1 is designed as a cylindrical counterbore structure, and the needle bar 1 slides Assembled on the transmission shaft of the sewing machine; the sealing sleeve 2 is designed to be cylindrical, and the inside of the sealing sleeve 2 is designed as a conical counterbore structure, and the sealing sleeve 2 is fixedly installed on the cylindrical counterbore of the needle bar 1 hole; the piston 4 is slidably fitted in the cylindrical counterbore of the needle bar 1; ...

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Abstract

The invention relates to the field of sewing machines, in particular to a loosening prevention sewing machine needle rod fixing structure. The problem of machine needle loosening is solved. The loosening prevention sewing machine needle rod fixing structure comprises a needle rod, a sealing sleeve, a piston rod and a piston. The interior of the needle rod is designed to be of a columnar counter bore structure, and the needle rod is assembled on a transmission shaft of a sewing machine in a sliding mode. The sealing sleeve is designed to be cylindrical, the interior of the sealing sleeve is designed to be of a conical counter bore structure, and the sealing sleeve is fixedly arranged in a columnar counter bore of the needle rod. The piston is assembled in the columnar counter hole of the needle rod in a sliding mode. The piston rod is fixedly connected with the piston. Based on the principle of an injection syringe, the fixing state of the machine needle is controlled by changing the size and position of air pressure, the machine needle is fixed more firmly through a reverse sliding prevention rail, the influence of external factors is avoided, and the aim of preventing loosening is achieved through the simple structure.

Description

technical field [0001] The invention relates to the field of sewing machines, in particular to a sewing machine needle bar fixing structure. Background technique [0002] Machine needles, also known as sewing needles and car needles, are important components of sewing machines. During the sewing process, the machine needles penetrate the fabric thousands of times per minute. Needle contacts are subject to various loads, especially when used on thick or hard fabrics. [0003] The traditional method is to fix the sewing machine needle with the needle clamp screw. When the sewing machine is working, the needle clamp screw will loosen due to the vibration of the needle movement due to the continuous up and down movement of the sewing machine needle, causing the needle to move up and down and affecting the sewing machine. Sewing effect, and even cause damage to machine needles and sewing machine hardware, so there are defects. Contents of the invention [0004] In order to so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B55/02
Inventor 胡粉义
Owner WUJIANG ZHENYU SEWING EQUIP
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