Heat-shrinkable tube clamp mechanism and heat-shrinkable tube positive compression expansion device using the same

Abstract

The invention discloses a clamping mechanism and a heat shrink tubing positive companding device using the same. Compared with the spraying mode, the provided device can heat a heat shrink tubing more evenly, the thermal efficiency is higher, the required liquid temperature can be reduced by roughly 20 to 40 DEG C, the energy consumption is reduced, more importantly, the heat shrink tubing is completely soaked in the oil and is synchronously pulled out with the clamp, the wall of the heat shrink tubing is uniform, and no beveled edge is generated in the cross section. In the conventional method, a heat shrink tubing is soaked in hot liquid in an iron oil-bath tube with an opening, while in the provided method, the clamping mechanism can pull the heat shrink tubing to move in the liquid, and thus the heated and soft heat shrink tubing will not be pulled upwards.

Description

technical field [0001] The invention relates to heat-shrinkable tube processing equipment, in particular to a heat-shrinkable tube clamp mechanism and a heat-shrinkable tube positive pressure expansion device using the clamp mechanism. Background technique [0002] Heat-shrinkable tubes are widely used, and they are very important in the connection wires, wires, cables, etc. of electronic equipment that people come into contact with in daily life. [0003] Before the heat-shrinkable tube is applied to the end product, it needs to be heated to expand the diameter of the tube so that the tube wall can be changed from thick to thin. The traditional heating expansion is to spray 150-180°C liquid on the heat-shrinkable tube in a closed box, such as glycerin, ethylene glycol, etc. When this kind of heating expansion is in progress, the heat-shrinkable tube floats on the surface of the liquid to receive the spray. [0004] The traditional positive pressure expansion of heat-shrink...

AI Technical Summary

Problems solved by technology

This method of immersing the heat-shrinkable tube in the hot liquid with the perforated iron oil bath tube can solve the technical problem of uneven heating caused by the heat-shrinkable tube floating on the liquid surface, but there is a problem that the heat-shrinkable tube is in the iron oil bath. The inside of the tube is heated and becomes soft, and there is no traction force during the axial movement process. It is easy to stretch the softened heat-shrinkable tube, which causes the stretching of the heat-shrinkable tube in the axial direction. The tube wall of some pulling parts is relatively thin, and more seriously, there will be fracture defects of the heat-shrinkable tube, and it does not meet the requirement of thermal processing for the axial length of the heat-shrinkable tube to remain unchanged.

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