A manufacturing process of one-piece magnetic isolation tube for pilot head of solenoid valve
A manufacturing process and technology of magnetic isolation pipes, which are applied in valve operation/release devices, valve details, valve devices, etc., and can solve problems such as leakage, unqualified solenoid valve quality, and poor pressure resistance.
Active Publication Date: 2018-09-18
王建良
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Problems solved by technology
[0003] At present, due to the limitation of technology, equipment and other conditions, the base and the magnetic isolation tube are made separately first, and then the two are welded into a whole pilot socket by welding process. This structure is simple in process, but it is limited by welding, so There are defects such as leakage caused by welding, poor pressure resistance, rough appearance, etc., resulting in substandard quality of the solenoid valve
Method used
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[0024] Below in conjunction with the accompanying drawings, the specific embodiments of the present invention will be further described, so as to make the technical solution of the present invention easier to understand and grasp.
[0025] like figure 1 As shown, a manufacturing process of a solenoid valve pilot head conjoined magnetic isolation tube, which sequentially includes the blank forming of the tube body and the finishing treatment of the blank after forming, wherein the blank forming includes the following steps:
[0026] Step 1: Select non-magnetic material stainless steel discs, such as 316L stainless steel discs or 305 stainless steel discs or 304 stainless steel discs or 202 stainless steel discs as blanks, and go through forming machines or cold heading machines or nut machines for high-temperature heat treatment;
[0027] The second step: the blank material after high temperature heating treatment enters the blank forming mold, and then goes through blanking, b...
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The invention discloses a manufacturing process of an electromagnetic valve pilot head connected magnetic shielding tube. The manufacturing process sequentially comprises tube body blank forming and precise processing, and is characterized in that the blank forming comprises the following steps that 1, a stainless steel disc made of non-magnetic materials is used as blank materials to be subjected to high-temperature heating treatment; 2, the blank materials subjected to high-temperature heating treatment enter a blank forming mold, and blanking, blank mold forming, punching stretching and discharging are sequentially carried out; during the blanking, a material cutting cutter is adopted for cutting the heated and stretched blank materials to the length required by a processed product, the blank materials subjected to the material cutting enter the blank forming mold, the magnetic shielding tube and a base are integrally formed into a connected structure, then, the connected magnetic shielding tube is subjected to punching stretching by a stretching punching head in the blank forming mold, and the punching stretching sequentially comprises base punching stretching and magnetic shielding tube punching stretching. The manufacturing process adopting the technical scheme has the advantages that the welding is not needed, the magnetic shielding tube and the base are integrally formed and are of the connected structure, and the problems of influence on the firmness and leakage caused by welding are solved.
Description
technical field [0001] The invention relates to a manufacturing process of a magnetic isolation tube connected to a pilot head of an electromagnetic valve, and belongs to the technical field of electromagnetic valve processing technology. Background technique [0002] The pilot head is an actuator matched with the solenoid valve. It has a base connected to the valve body and a magnetic isolation tube for installing the static and moving iron core components. The magnetic isolation tube is an important part of the magnetic isolation tube assembly in the solenoid valve. The magnetic isolation tube assembly is the heart component of the solenoid valve. It has two functions. One is to form the main working magnetic circuit, that is, the working stroke (air gap) With the magnetic circuit of the iron core, the surroundings of the working stroke should be non-magnetic, so that the working magnetic flux beam can lead to the iron core with less magnetic flux leakage; the iron core sh...
Claims
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IPC IPC(8): B23P15/00
CPCB23P15/001F16K31/06
Inventor 王建良
Owner 王建良