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Forming method for end enclosure structure and lining of IV-type cylinder

A molding method and lining technology, which is applied to household components, household appliances, and other household appliances, can solve the problem that the extrusion blow molding parison cannot pass through the pole hole of the metal insert, so as to reduce the risk of falling off and failure The effect of low risk and good sealing

Active Publication Date: 2018-10-16
YAPP AUTOMOTIVE PARTS (KAIFENG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is aimed at the technical problems existing in the prior art, and provides a type IV gas cylinder head structure and lining molding method. Hole problem, and at the same time put forward the process method of engineering realization for this structure, so as to effectively play the advantages of extrusion blow molding process

Method used

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  • Forming method for end enclosure structure and lining of IV-type cylinder
  • Forming method for end enclosure structure and lining of IV-type cylinder
  • Forming method for end enclosure structure and lining of IV-type cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: see Figure 6 , a gas cylinder head lining structure, including a metal end cap 1, a metal insert 2, a plastic liner 4 and a sealing assembly, a sealing assembly is arranged between the metal insert 2 and the metal end cap 1, the A plastic lining 4 is provided under the metal insert 2, and a carbon fiber composite layer 3 is wound around the metal end cap. The metal insert 2 and the metal end cap 1 form an integral head. The rigidity of the head is good, which is conducive to reducing the amount of carbon fiber in the head section. The combination of lining and metal parts, the lining can be made into a multi-layer structure by blow molding technology, which is used to block small molecular gases.

Embodiment 2

[0026] Example 2: see Figure 6 , as an improvement of the present invention, the sealing assembly includes a first sealing ring 5, a second sealing ring 6 and a third sealing ring 7, the first and second sealing rings have a circular cross-sectional shape, and the material is rubber, The cross-sectional shape of the third sealing ring is set to be rectangular, and the material is rubber or silicone resin. The first sealing ring and the second sealing ring are arranged on the side of the metal end cap. As the metal end cap is tightened, the sealing ring is compressed; the double-layer protective gas does not leak, and the third sealing ring is arranged on the metal insert The connection between the upper part and the metal end cap prevents the failure of the first sealing ring and the second sealing ring, and at the same time prevents external resin, etc. from flowing into the thread gap. When the end cap is assembled, the inner liner assembly of the gas cylinder has a comple...

Embodiment 3

[0027] Embodiment 3: see Figure 1-Figure 5 , a type IV gas cylinder head structure and lining molding method, the method may further comprise the steps:

[0028] 1) The manipulator clamps the upper and lower metal inserts and places them at the corresponding positions in the mold, the billet is extruded, and the lower end of the billet passes through the pole holes of the upper and lower metal inserts;

[0029] 2) The mold is closed.

[0030] 3) The bottom blowing needle seat supplies air, blows the parison, and the parison blow molding is completed. The blowing needle in the upper blowing needle hole pierces the blow molding dummy, forming an air flow channel inside the parison, and the blowing needle seat Convective heat exchange cooling inside the mold with the blowing needle holes on the upper end, cooling to an appropriate temperature, opening the mold, removing the parison with inserts, cutting off the blow molding flash, and then cooling and shaping;

[0031] 4) Plac...

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Abstract

The invention relates to a forming method for an end enclosure structure and a lining of an IV-type cylinder. The method comprises the following steps that (1), mechanical arms clamp an upper metal insert and a lower metal insert and place the metal inserts at corresponding positions in a mould, a blank is extruded out, and the lower end of the blank penetrates through polar holes of the upper metal insert and the lower metal insert; (2), the mold is closed; (3), parison blow molding and forming is ended, convective heat exchange cooling inside the mold is performed, the blank is cooled to a proper temperature, the mold is opened, the parison with the inserts is removed, blow molding burrs are removed, and then cooling and shaping are performed; (4), the cooled and shaped parison is placedon a rack to be fixed, and a blow molding false head is cut off with a blade; (5), a metal end cover is assembled, the metal end cover is connected with the metal inserts through threads, and a groove in the neck of a metal end head allows a torque wrench to exert force; (6), fiber winding is performed. By means of the forming method, the problem that the extruded and blow molding parison cannotpenetrate through the polar holes of the metal inserts is solved; and meanwhile, the process method for implementing the engineering is proposed targeted to the structure, and thus the advantages of the extrusion and blow molding process are played effectively.

Description

technical field [0001] The invention relates to a molding method, in particular to a head structure and lining molding method of a IV-type gas cylinder, belonging to the technical field of fuel tank molding structural components. Background technique [0002] The inner lining of the Type III gas cylinder is formed by spinning aluminum alloy, which is characterized by seamlessness, but it is heavy. Fuel cell vehicles have high requirements on weight, and it is hoped to reduce the weight of the gas cylinder, so the IV type gas cylinder has outstanding advantages, because its inner lining is made of plastic and is lighter in weight. But the plastic lining also has two important difficulties, the first molding method, and the second sealing performance. [0003] There are two main methods of forming plastic linings: rotational molding and blow molding. The rotomolding process is simple, but the efficiency is very low, and it is difficult to meet the pace of industrial producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/04B29C49/20B29C49/42B29C70/30
CPCB29C49/04B29C49/20B29C49/4278B29C70/30B29C2049/2017B29L2031/7158
Inventor 姜林刘亮胡正云
Owner YAPP AUTOMOTIVE PARTS (KAIFENG) CO LTD
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