Processing craft for thermoplastics pipes of copper bar suit

Abstract

A processing craft for thermoplastics pipes of copper bar suit is characterized in that the length of each end of the thermoplastics pipes is 10mm shorter than that of the copper bars when the thermoplastics pipes are sleeved on the copper bars, and an air heater operates at a second gear at 630 DEG C in the processes of baking, heating, contracting and forming each section of the thermoplastics pipe sleeved on each section of the copper bar by using a heat gun, wherein the hot blast rate is 28-300 liters per minute. By overcoming the prejudice of the prior art and saving raw materials of the thermoplastics pipes with simple operation, the processing craft for thermoplastics pipes of copper bar suit disclosed by the invention has the advantages that the phenomena of overlarge local contraction amount or burning and burning through are barely caused when the sleeved thermoplastics pipes are baked, heated, contracted and formed by the heat gun, the abnormally-shaped copper bars containing bending angles are not easy to generate folds during thermal shrinkage, redundant noses of the thermoplastics pipes are removed from two ends of the copper bars after the sleeved thermoplastics pipes are baked, heated, contracted and formed so that the thermoplastics pipes are easily gathered in the thermoplastics pipe cutting process, and is simple in cutting operation and high in production efficiency.

Description

technical field [0001] The invention relates to a processing technology for thermoplastic tubes with copper bars, which is suitable for processing thermoplastic tubes with conductive copper bars of various structures, especially suitable for processing thermoplastic tubes with low-voltage copper bars with a width of 10-120 mm. Background technique [0002] At present, in the existing conventional processing technology of thermoplastic tubes for copper bars, due to the prejudice in this technical field and the production process requirements of enterprises, after the thermoplastic tubes are worn on the copper bars, the processing allowance on each end of the copper bars At least 10mm of copper bar should be grown; then, when using a hot air gun to bake, heat, shrink and shape the threaded thermoplastic pipe, the heat gun can only use the hot air at level Ⅲ. At this time, the temperature of the hot air blown by the heat gun is 630°C. The hot air volume is 500 liters per minute...

AI Technical Summary

Problems solved by technology

It can be seen that when using the above conventional process kits to process thermoplastic pipes, the consumption of thermoplastic pipe raw materials is large, and the amount of hot air blown by the heat gun is large, and the shrinkage rate of thermoplastic pipes is high, which often causes excessive local shrinkage or burning of thermoplastic pipes , Burn-through phenomenon, when the copper bar is a special-shaped copper bar with a bending angle, especially when the copper bar contains a bending angle of 45° to 90°, the second surface of the thermoplastic tube (that is, the copper that is heated first) The opposite side of the plastic tube surface) is also prone to wrinkles during the heat shrinking process. Therefore, the above situations often cause the end of the worn thermoplastic tube to shrink and deform greatly or be scrapped, or the copper bar must be re-passed through the thermoplastic tube and re-baked. Roasting and shrinking the thermoplastic tube, the production efficiency is low; in addition, after the hot air gun is baked and heated, and the thermoplastic tube is tightened and shaped, redundant thermoplastic tube warping will appear at both ends of the copper bar, so when cutting copper It is not suitable to align the thermoplastic pipes at the overlapping holes, the operation is cumbersome, labor-intensive, and it is easy to cause cutting errors, waste thermoplastic pipe raw materials, and high production costs

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