Hot melting connector capable of being quickly positioned, and water dissolving core injection molding process thereof

Abstract

The invention belongs to the technical field of pipe fitting plastics, and particularly relates to a hot melting connector capable of being quickly positioned, and a water dissolving core injection molding process thereof. The hot melting connector comprises a connector body provided with at least one installing end, wherein an installing site is arranged on an inner wall of the connector body; aguiding core is arranged on the installing site; an outer side wall of the guiding core is a guiding surface; a hot melting guiding part adaptive to the wall thickness of a hot melting pipe is formedbetween the guiding surface and an inner wall of the installing end; a guiding opening is formed in the outer end of the hot melting guiding part. The guiding core provided by the invention has the following effects that a, during heating, the guiding core can be prevented from being inclinedly or one-sidedly heated; b, during hot melting, a pipeline and the connector keep in a straight line, so that an annular fusion welding surface is uniformly fusion-welded, and the occurrence of the phenomenon of one-sided fusion welding is avoided.The injection molding process provided by the invention isapplied to the plastic industry and is mainly aimed at the plastic products which have complex inner cavity larger than the outer port and are not suitable for the core demoulding treatment. The plastic products produced by the injection molding process can integrally form a complex inner cavity, the core demoulding is not needed, the manufacturing cost is low and the water dissolving core can beeasily removed by water washing.

Description

technical field [0001] The invention belongs to the technical field of plastic pipe fittings, in particular to a fast-positioning hot-melt joint and its water-soluble core injection molding process. Background technique [0002] Hot-melt connection (hereinafter referred to as welding) is widely used in the connection of new pipes and fittings such as PP-R pipes, PB pipes, PE-RT pipes, metal composite pipes, and curved-elastic vector aluminum alloy-lined plastic composite pipe systems. After heating, the temperature rises to a liquid state A connection after melting point. In the traditional welding process, if the operator is inexperienced, the following problems are likely to occur: [0003] 1. When heating with a hot-melt machine, the hot-melt part will be heated obliquely or unilaterally, which will easily cause disadvantages such as inclined installation of water pipes and insufficient sealing. [0004] 2. When heating with a hot melt machine, inexperienced workers ten...

AI Technical Summary

Problems solved by technology

[0003] 1. When heating with a hot-melt machine, the hot-melt part will be heated obliquely or unilaterally, which will easily cause disadvantages such as inclined installation of water pipes and insufficient sealing

[0004] 2. When heating with a hot melt machine, inexperienced workers tend to shake their hands, and the welding position is too large, which is prone to leakage after extrusion, resulting in liquid leakage and other problems

[0005] 3. The traditional hot-melt joint has no limit structure, and it is not easy to control the depth of the welding position: if it is too long, it will waste time and cost; if it is too short, it is not easy to have problems such as insufficient strength and poor sealing.

[0006] 4. After welding, the molten plastic is easy to solidify on the inner wall of the water pipe, resulting in a reduction in the cross-section of the flow channel and affecting the normal use of the pipeline

Images