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Device for expanding thermal shrinkage tube

A technology of expansion device and heat-shrinkable tube, which is applied to tubular objects, other household appliances, household appliances, etc., can solve the problems of short service life, poor cooling effect, and low expansion efficiency of sizing tubes, so as to improve service life, Improve cooling effect and reduce friction

Active Publication Date: 2010-06-02
CHANGYUAN ELECTRONICS DONGGUAN +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the poor cooling effect when using the existing heat-shrinkable tube expansion device to produce the heat-shrinkable tube, the friction between the heat-shrinkable tube and the sizing tube, the low expansion efficiency and the slow speed, and the use of the sizing tube Short life, large axial shrinkage of the product, providing a good cooling effect, small friction between the heat shrinkable tube and the sizing tube, high expansion efficiency and fast speed, long service life of the sizing tube, and small axial shrinkage of the product heat shrink tubing expansion device

Method used

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  • Device for expanding thermal shrinkage tube
  • Device for expanding thermal shrinkage tube

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Embodiment Construction

[0014] see figure 1 , a heat shrink tube expansion device, which includes an expansion mold 100, a water absorber 200.

[0015] The expansion die 100 includes a jacket 1, a fixed diameter pipe 2, a front sealing plate 3, a rear sealing plate 4, a partition 5, a die nozzle 6, several water inlet holes 7, a water inlet jacket 8, a fixed diameter Pipe water inlet 9, a connecting pipe 10.

[0016] The jacket 1 is a body with two ends open.

[0017] The sizing pipe 2 is a straight cylinder made of bronze or stainless steel with two ends open. The sizing pipe 2 is installed inside the casing 1 . The inner diameter of the sizing tube 2 is the same as or slightly larger than the outer diameter of the expanded heat-shrinkable tube (not shown).

[0018] The front sealing plate 3 is fixedly installed between the outer cover 1 and the front end of the sizing tube 2 (that is, the end where the heat-shrinkable tube to be expanded (not shown) enters the sizing tube 2), and the outer cove...

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PUM

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Abstract

The invention discloses a thermal shrinkage pipe expansion device which comprises an expansion die. The expansion die comprises an outer casing and a sizing tube. The sizing tube is arranged in the outer casing. The space between the outer casing and the sizing tube is separated into a vacuum chamber and a cooling chamber. The outer casing on the cooling chamber is provided with at least one waterinlet and at least one water outlet. The expansion die also comprises a plurality of water inlet holes which are arranged on the sizing tube of the cooling chamber. Cooled water can enter the insideof the sizing tube through the water inlet holes. The thermal shrinkage pipe expansion device of the invention has the advantages of good cooling effect, light friction between the thermal shrinkage pipe and the sizing tube, high expansion efficiency, fast speed, long service life of the sizing tube and small axial shrinkage rate of products.

Description

technical field [0001] The invention relates to heat-shrinkable tube manufacturing equipment, in particular to a heat-shrinkable tube expansion device. Background technique [0002] At present, the known expansion molds for heat-shrinkable tubes are generally composed of a vacuum chamber and a cooling chamber. There are no water holes in the wall of the sizing tube in the cooling chamber. During the expansion process, water cannot enter the interior of the mold, and water cannot directly contact the heat-shrinkable tube. Causes poor cooling effect. After the heat-shrinkable tube expands, under the action of vacuum or vacuum and internal pressure, a large friction occurs between the heat-shrinkable tube and the inner wall of the sizing tube. At this time, the heat-shrinkable tube has not been fully cooled and is still in a softened state. Under the action of external traction, it is easy to produce axial stretching, the axial shrinkage rate of the heat shrinkable tube cannot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C51/10B29C51/42B29L23/00
Inventor 李可涛赵成刚鲁尔兵刘军汪厚勇
Owner CHANGYUAN ELECTRONICS DONGGUAN
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