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Special air pressure regulating device for extrusion forming of sealing strip

A technology of extrusion molding and pressure regulating device, applied in the field of polymer extrusion molding, can solve the problems of outlet pressure fluctuation, poor precision and low precision, and achieve the effects of constant pressure, impact prevention and convenient pressure regulation

Pending Publication Date: 2018-09-07
HUNAN TECHN COLLEGE OF RAILWAY HIGH SPEED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two technical patents are equipped with pressure gauges to display the pressure of compressed air, but the control method of compressed air pressure is relatively simple and rough.
There are the following defects: 1. The outlet of the compressor is not equipped with a gas storage tank with stable gas pressure, and the outlet pressure fluctuates periodically. If the gas storage tank is not installed, it is difficult to maintain the stability of the outlet pressure; 2. The hose and liquid The relative position in the height direction affects the pressure of the compressed air, the change in liquid density and the drop of the liquid level due to evaporation will affect the stability of the compressed air pressure setting value; 3. The pressure adjustment is inconvenient and the accuracy is not high
To adjust the compressed air pressure, it is necessary to change the depth of the hose inserted into the liquid surface, which is inconvenient to operate and has poor precision

Method used

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  • Special air pressure regulating device for extrusion forming of sealing strip
  • Special air pressure regulating device for extrusion forming of sealing strip
  • Special air pressure regulating device for extrusion forming of sealing strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like Figure 1-4 As shown, a special air pressure regulating device for sealing strip extrusion molding, which includes a control box, the control box includes a bracket 101 and a mounting plate, the bracket 101 is welded by several angle steels, and the bracket 101 is divided into two parts by transverse angle steel There are two layers up and down, and the installation board includes a front board 102, a back board 107, a left side board 103, a top board 104, a right side board 105 and a bottom board 106, which are installed around and around the upper bracket 101, and the above installation board surrounds the upper bracket 101 into a box body, the front plate 102 is provided with two horizontal rows (viewed from the direction shown in the figure) of mounting holes, and each row of mounting holes runs from right to left ( figure 1 Seen from the direction) are: pressure reducing valve mounting hole 1021, pressure gauge mounting hole 1022, precision pressure reducing ...

Embodiment 2

[0030] like Figure 5 As shown, a special air pressure regulating device for sealing strip extrusion molding, which includes a control box, the control box includes a bracket 101 and a mounting plate, the bracket 101 is welded by several angle steels, and the bracket 101 is divided into two parts by transverse angle steel There are two layers up and down, and the installation board includes a front board 102, a back board 107, a left side board 103, a top board 104, a right side board 105 and a bottom board 106, which are installed around and around the upper bracket 101, and the above installation board surrounds the upper bracket 101 into a box Body, the front plate 102 is provided with three horizontal rows (viewed from the direction shown in the figure) of mounting holes, each row of mounting holes from right to left is: pressure reducing valve mounting hole 1021, pressure gauge mounting hole 1022, precision pressure reducing valve mounting hole 1023, differential pressure...

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Abstract

The invention discloses a special air pressure regulating device for extrusion forming of a sealing strip. The special air pressure regulating device for extrusion forming of the sealing strip comprises a control box, the control box comprises a support and a mounting plate, a box body is formed by the mounting plate and the support in an enclosed mode, an air pressure regulating system is installed in the box body, the air pressure regulating system comprises a precision pressure reducing valve, an inlet of the precision pressure reducing valve is connected with a pressure reducing valve, theother end of the pressure reducing valve is connected with an air storage tank, and the air storage tank is connected with a pneumatic triple part. An outlet of the precision pressure reducing valveis connected with a throttling valve, and an outlet of the throttling valve is connected with an extrusion die port through an air pipe. The special air pressure regulating device for extrusion forming of the sealing strip has the advantages of providing accurate and stable air pressure and achieving convenient pressure adjusting.

Description

technical field [0001] The invention relates to an air pressure regulating device in the field of polymer extrusion molding, in particular to a special air pressure regulating device for extrusion molding of sealing strips. Background technique [0002] With the rapid development of automobiles, railway rolling stock and EMUs, the requirements for the sealing performance of the sealing strips used on these devices are also getting higher and higher. In order to meet the sealing requirements of the movable parts on these devices, the supporting sealing strip generally adopts the section with hollow bubble tube A, such as Image 6 shown. The sealing strip is usually extruded by a mold. In order to ensure the inner and outer diameter of the hollow tube A with good precision, the traditional extrusion process is to set a mandrel in the hollow tube A of the sealing strip, and extrude the hollow tube A in the sealing strip. On the outer peripheral side of the mandrel, the hollow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/92B29C48/92
CPCB29C48/92
Inventor 曹楚君黄乐艳陈志刚伍春发陈惠
Owner HUNAN TECHN COLLEGE OF RAILWAY HIGH SPEED
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