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Process and apparatus for melting and welding plastic sheet to produce pipe

A technology for manufacturing equipment and plastic sheets, which is applied to tubular items, other household appliances, household appliances, etc., can solve the problems of the limitation of the diameter of the round pipe, the limitation of the production volume, and the high production cost, and achieves a simple processing method, improves efficiency, and improves production. Efficient effect

Inactive Publication Date: 2007-08-22
东莞中志鞋材有限公司
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AI Technical Summary

Problems solved by technology

At present, the main production process of this type of air bag type strap is as follows. Seam plastic tubes are used, generally circular tubes, and the plastic tubes are filled with air through an external gas filling device, and are pressed by a mold to form multiple closed air bags in the middle of the circular tube; The production cost of seamed plastic pipes is relatively high, and generally only straight plastic pipes can be used for production. The production of straight round pipes has three major defects. One is that the diameter of the round pipe is limited by the mold, and the other is limited by the production volume. , the cost is high, and the third is that it is flat when stored, so it needs to be inflated to make it bulge during processing and then processed

Method used

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  • Process and apparatus for melting and welding plastic sheet to produce pipe
  • Process and apparatus for melting and welding plastic sheet to produce pipe
  • Process and apparatus for melting and welding plastic sheet to produce pipe

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Embodiment Construction

[0024] See accompanying drawing 1-6, the present invention provides the manufacturing equipment of seam welding of plastic sheet material into tubular shape, and it comprises material frame 10, bending guiding device, press-fit welding combination mould; Plastic substrate 12; two semicircular grooves 22, 24 penetrating the bending guide are formed on the bending guide, and the two semicircular grooves 22, 24 form an unclosed circle, and the two semicircular grooves 22, The ends of 24 have misplaced overlapping parts, and the said curved guiding device has two large and small ones, and the two curved guiding devices 20, 21 are placed side by side, and the curved guiding device 21 with the larger radius of the semicircular groove is close to the material rack 10 , through this arrangement, the plastic substrate 12 can be moved stably, and the misaligned overlapping parts of each section of the plastic substrate 12 processed by the press-fit welding combination mold can be kept un...

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Abstract

The present invention relates to process and apparatus for melting and welding plastic sheet to produce pipe. The process includes the following steps: 1. bending two plastic sheets to constitute one pipe with overlapped edges; 2. melting and welding in a combined mold to form integral plastic pipe; 3. feeding air to the plastic pipe for reducing resistance and drawing out the pipe; and 4. discharging the plastic sheet. The present invention has simple fast production process, high product quality, high production efficiency and other advantages.

Description

Technical field: [0001] The invention relates to the technical field of a plastic pipe manufacturing process and its manufacturing equipment, in particular to a manufacturing process and equipment for seam-welding plastic sheets into a tube shape. Background technique: [0002] In order to reduce the pressure of the backpack on the user, the existing straps generally have two structures, one is made of pure soft material, and the other is made of an airbag structure. Among them, the straps made of pure soft materials are not very comfortable, and many materials are used, the manufacturing process is complicated, and the production cost is relatively high. The air bag structure strap, that is, there is an air bag in the strap, and the air bag is used to bear the pressure of the backpack, and the air in the air bag will be deformed after being pressed, so the air bag strap can not only bear greater pressure but also can be used in a large area. Disperses the pressure within, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C53/36B29C53/80B29C65/08B29L23/00
Inventor 刘永忠
Owner 东莞中志鞋材有限公司
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