Manufacturing method of plastic fuel tank

A manufacturing method and fuel tank technology are applied in the manufacturing field of plastic fuel tanks, which can solve the problems of low production efficiency of single-station blow molding machines, reduce investment in tooling equipment and production space, reduce energy consumption, and improve drying effect. Effect

Active Publication Date: 2009-12-30
YAPP AUTOMOTIVE PARTS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for manufacturing a plastic fuel tank to solve the problem of low production efficiency of a single-station blow molding machine in the prior art, so that the output of the single-station blow molding machine can be doubled

Method used

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  • Manufacturing method of plastic fuel tank
  • Manufacturing method of plastic fuel tank
  • Manufacturing method of plastic fuel tank

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Experimental program
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Embodiment Construction

[0021] The manufacture method of plastic fuel tank of the present invention comprises the following steps:

[0022] (1) Inhale high-density polyethylene, adhesive material, barrier material, and flash material into the storage tanks with sufficient reserves through the vacuum feeding system;

[0023] (2) Dry the barrier material and flash material particles, and control the drying temperature at 90±5°C;

[0024] (3) Use six special extruders with automatic weighing control to pump out qualitative and quantitative melt materials, and continuously extrude a 6-layer parison downward through the co-extrusion die head, and the parison is a cylinder with an open lower end Shaped and vertically hung under the die head, the thickness ratio of each layer from the inside to the outside is: high-density polyethylene: adhesive material: barrier material: adhesive material: recycled material: high-density polyethylene = 37:1.5 : 2: 1.5: 46: 12; Add black color masterbatch to the outer lay...

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Abstract

The invention discloses a manufacturing method of a plastic fuel tank, which comprises the following steps: six special extruding machines with automatic weighing control are used to pump out qualitative and quantitative melting stocks and continuously extrude out a molding blank by a coextrusion mold head, the molding blank comprises six layers from inside to outside, and the ratio of the thicknesses of the six layers which are respectively high density polyethylene, sizing, barrier material, sizing, returns and high density polyethylene is 37:1.5:2:1.5:46:12; a blowing mold is internally provided with mold cavities of two fuel tanks, each mold cavity is respectively provided with an air inlet hole and an air return hole, a material overflow area is arranged between the two mold cavities, and the middle part of the material overflow area is provided with a split line. The manufacture method adopts a single-station blow molding machine and can manufacture two fuel tanks in one mold in a blow molding way once, thereby greatly enhancing the production efficiency, reducing the occupation of production space, lowering the investment and energy-consumption of the blow molding machine and also reducing the raw material consumption of single fuel tank.

Description

technical field [0001] The invention relates to a manufacturing method of a plastic fuel tank. Background technique [0002] At present, in the manufacture of plastic fuel tanks, in order to double the output, a double-station blow molding machine is used, and two sets of molds are installed at the same time. During blow molding, ultra-low temperature gas of -40°C or even -180°C is injected into the fuel tank, which can increase the production efficiency by 15%. Productivity. Double-station equipment is 15 million RMB more expensive than single-station equipment, and requires two sets of molds. It needs to add gas refrigeration equipment, which increases energy consumption and production costs. In addition, all ventilation pipes and control valves must have thermal insulation performance and low temperature resistance. Contents of the invention [0003] The invention provides a method for manufacturing a plastic fuel tank to solve the problem of low production efficiency ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/04B29C49/78B29C49/48B29C49/42B29B13/06
Inventor 孙岩姜林徐松俊吴陆顺高德俊刘萍
Owner YAPP AUTOMOTIVE PARTS
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