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Vacuum one-way valve

A one-way valve, vacuum technology, applied in the field of valves, can solve the problem of no magnetic conductive workpiece fixing and so on

Inactive Publication Date: 2018-05-04
XIAN AERONAUTICAL POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the process of processing some ultra-thin metal products, the clamping requirements are high. Not only the clamping must be fast and convenient, but also no scratches or clamping marks on the surface of the workpiece are allowed. Therefore, the vacuum negative pressure clamping technology is applied in the field of precision manufacturing. Showing a trend of rapid development, but the existing technology does not have fully matching parts for fast fixing of magnetically permeable workpieces

Method used

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] The structure of a vacuum check valve provided by the present invention is as follows: figure 1 As shown, it includes a valve body 1 with a through-cavity. The outer surface of the valve body 1 is provided with external threads for easy installation. The valve body 1 is made of non-metal or non-magnetic material. The cavity forms a gas flow channel, and the cavity A spool 4 for sealing it is arranged inside, and a magnet 3 is fixedly attached to the top of the spool 3 . Exemplarily, the magnetic body 3 is a magnet. The valve core 4 is made of plastic material, the sealing body 5 is a rubber sealing body, and the dustproof net 2 is a nonmagnetic metal mesh.

[0020] In order to enhance the sealing effect, a sealing body 5 is provided at the bottom of the valve core 3, and the cavity has a tapered surface adapted to the shape of the se...

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Abstract

The invention discloses a vacuum one-way valve. The vacuum one-way valve comprises a valve body with a through cavity, wherein external threads are arranged on the outer surface of the valve body, a gas flow channel is formed in the cavity, a valve core used for sealing the cavity is arranged in the cavity, and the top end of the valve core is fixedly connected with a magnet. The vacuum one-way valve is connected with a workpiece clamping vacuum cavity, and under normal conditions, the vacuum one-way valve is sealed by itself through the dead weight and the negative pressure; and when a magnetic conducting workpiece is placed on the vacuum one-way valve, the magnetic conducting workpiece attracts the valve core and a sealing body to rise through magnetic force, so that an airflow channel is opened, and the magnetic conducting workpiece is fixed through the negative pressure. According to the vacuum one-way valve, the structure is simple and stable, the use is convenient, and the surface of the workpiece cannot be damaged.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a vacuum check valve. Background technique [0002] In recent years, quick clamping fixtures have become more and more widely used in the field of CNC machining. Especially in the process of processing some ultra-thin metal products, the clamping requirements are high. Not only the clamping must be fast and convenient, but also no scratches or clamping marks on the surface of the workpiece are allowed. Therefore, the vacuum negative pressure clamping technology is applied in the field of precision manufacturing. It presents a rapid development trend, but the prior art does not have fully matched parts to quickly fix the magnetically permeable workpiece. Contents of the invention [0003] The object of the present invention is to provide a vacuum one-way valve, which is connected with the workpiece clamping vacuum chamber and sealed by its own weight and negative pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/08
CPCB23Q3/088
Inventor 李军法邓志博
Owner XIAN AERONAUTICAL POLYTECHNIC INST