Manufacturing method of large caliber direct through plastic pipe joint

A manufacturing method and technology of plastic pipes, which are applied in the field of manufacturing plastic pipe joints, can solve the problems that straight-through plastic pipe joints cannot be matched with large-diameter plastic winding pipes, etc., and achieve the effects of saving equipment investment, high economic benefits and social benefits

Inactive Publication Date: 2004-10-06
吴家其
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the straight-through plastic pipe joints manufactured by the existing manufacturing methods cannot be matched with the large-diameter plastic winding pipes for

Method used

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  • Manufacturing method of large caliber direct through plastic pipe joint
  • Manufacturing method of large caliber direct through plastic pipe joint
  • Manufacturing method of large caliber direct through plastic pipe joint

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Embodiment Construction

[0018] see figure 1 with Figure 2. The method for manufacturing large-diameter straight-through plastic pipe joints according to the present invention has the following solution: ①Take two forming molds 1 and 2 whose outer diameters are equal to the outer diameters of the connected pipes, which can be butted into one and can be disassembled, The two ends of the two butted forming molds 1 and 2 are respectively equipped with clamps 3 and 4 that can be rotated forward and reverse to drive the two molded molds 1 and 2 to rotate correspondingly, and one of the clamps 4 is installed on the guide rail 5 And it can move back and forth along the guide rail 5; on one side of the two forming molds 1 and 2, there is a winding machine 6 equipped with a winding reel 61, the winding reel 61 is equipped with resistance wire, and the winding machine 6 is installed on the guide rail 7 And can move back and forth along guide rail 7; Be provided with a plastic extruder 9 that is installed on th...

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Abstract

A technology for manufacturing the pipe joint of large-diameter straight plastic pipes includes providing mould, fixture, winder and plastic extruder, winding resistance wire on the mould, extruding out the hot-fusible plastics onto the surface of mould, and cooling to obtain the pipe joint for plastic blowdown pipes. For the joint of water-supplying plastic pipes, such additional steps are needed as winding the reinforcing wire, extruding out the hot-fusible plastics onto its surface, and cooling. After the plastic pipe is inserted in said joint, a current is flowing through said resistance wire to heat them until the plastic is fused, so ahdering them together.

Description

technical field [0001] The invention relates to a method for manufacturing a plastic pipe joint, in particular to a method for manufacturing a large-diameter straight-through plastic pipe joint. Background technique [0002] At present, the maximum pipe diameter of plastic water supply pipes and straight-through plastic pipe joints at home and abroad can only be Φ630mm. The reason is that there are no large enough plastic extruders, injection molding machines and large enough molds for production. Therefore, although people have realized that there are many shortcomings in reinforced concrete pipes and ductile iron pipes, they still have to be used as water supply network main pipes for a long time. [0003] The traditional manufacturing method of straight-through plastic pipe joints with a smaller diameter of Φ630mm and below usually adopts the injection molding method and the expansion tube expansion bell mouth method. The injection molding method is to use the injection ...

Claims

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Application Information

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IPC IPC(8): B29C65/34
Inventor 吴家其
Owner 吴家其
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