Expanding die and processing equipment

Abstract

The invention discloses an expansion die and processing equipment. The expansion die comprises a die main body and an adjusting structure, wherein the die main body is provided with an expansion cavity, and an air leakage channel and an inlet which are communicated with the expansion cavity. The adjusting structure comprises a die nozzle assembly and an adjusting cap which are arranged at the inlet, wherein the die nozzle assembly is provided with a passage communicated with the inlet and a ventilation channel communicated with the air leakage channel, the ventilation channel is communicated with the passage, the adjusting cap movably sleeves one end, away from the inlet, of the die nozzle assembly to seal or open the ventilation channel, and the adjusting cap is provided with an inlet corresponding to the passage. The adjusting cap can move relative to the die nozzle assembly, so that a gap communicating the inlet and the ventilation channel is formed between the adjusting cap and the die nozzle assembly. The expansion die provided by the invention not only effectively avoids the wall sticking phenomenon when a heat shrink tube enters the expansion die, but also can avoid axial tension fluctuation caused by wall sticking of the heat shrink tube, so that the production stability and the finished product quality of the heat shrink tube are improved.

Description

technical field [0001] The invention relates to the technical field of production and manufacturing equipment for heat-shrinkable tubes, in particular to an expansion mold and processing equipment using the expansion mold. Background technique [0002] In the related technology, when the heat-shrinkable tube is expanded and produced, due to the heat-shrinkable tube is easy to stick to the wall and the frictional resistance between the heat-shrinkable tube and the inner wall of the mold, it is easy to produce axial stretching. This phenomenon occurs at the mold nozzle and enters the mold. At the inner core, because the heat shrinkable tube is still in the state of expansion and deformation when the mold is at this stage, and has not been finalized, it is very easy to cause poor axial stretching at this time, which affects the stability and thermal stability of the expansion production of the heat shrinkable tube. The quality of the shrink tube. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] In the related technology, when the heat-shrinkable tube is expanded and produced, due to the heat-shrinkable tube is easy to stick to the wall and the frictional resistance between the heat-shrinkable tube and the inner wall of the mold, it is easy to produce axial stretching. This phenomenon occurs at the mold nozzle and enters the mold. At the inner core, because the heat shrinkable tube is still in the state of expansion and deformation when the mold is at this stage, and has not been finalized, it is very easy to cause poor axial stretching at this time, which affects the stability and thermal stability of the expansion production of the heat shrinkable tube. The quality of the shrink tube

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