Process for Hot Bending Forming of Plastic Wire Rods for Nested Structures

Abstract

The invention relates to a process for hot bending forming of plastic wire rods with nested structure. The plastic wire rod with nested structure is has a central cavity; and the process includes the steps of: (1) filling the cavity at the hot bending position of the plastic wire rod with nested structure with a silicone rubber material; (2) heating the plastic wire rod with nested structure on a molding mould for bending, wherein the heating temperature is 160-170 DEG C; and (3) after bending forming, taking out the filler to obtain the product. The plastic wire rod with nested structure obtained by the hot bending process does not have the phenomena of disengagement, distortion deformation.

Description

technical field [0001] The invention relates to a hot-bending forming process, in particular to a hot-bending forming process for plastic wire rods. Background technique [0002] At present, the hot-bending process of solid plastic wires generally involves placing the wires on a forming mold, and then heating the wires evenly, so that the wires can be bent and formed. [0003] However, for the nested structure plastic wire, the effect of the above method is very unsatisfactory. The reason is that the nested structure plastic wire is generally formed by fastening two plastic inserts, and a cavity is formed in the center. When heating, it is difficult to ensure The two plastic inserts are evenly heated, which easily causes the two inserts to disengage. Moreover, due to the poor thermal conductivity of the air in the cavity, the wire rod and the central cavity are easily twisted and deformed during heating. Contents of the invention [0004] The technical problem to be solve...

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Problems solved by technology

[0003] However, for the nested structure plastic wire, the effect of the above method is very unsatisfactory. The reason is that the nested structure plastic wire is generally formed by fastening two plastic inserts, and a cavity is formed in the center. When heating, it is difficult to ensure The two plastic inserts are heated evenly, which may easily cause the two inserts to disengage. Moreover, due to the poor thermal conductivity of the air in the cavity, the wire and the central cavity may be distorted and deformed when heated.

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