Apparatus for enlarging tube used in heat exchanger

Abstract

A tube expander for heat exchangers is capable of organizing an ideal production line where the transportation efficiency is increased and the productivity is improved by having a transportation path in a straight line, that is, applying a method where the heat exchangers are carried into one end of the tube expander (in the left and right direction) and carried out from the opposite end, that is, the other end (so called through-the-center method). The left and right ends of the end plate 9 at the front side are inserted with a pair of first guide bars 10 , and the left and right ends at the back side are inserted with a pair of second guide bars 11 . A guide path 2a for a carrying device 23 or a guide path 2a to install a transportation device, in either case, the heat exchangers are transported from one end to the other of the base 2 , is established on the base 2 that supports the first guide bars 10 and the second guide bars 11 in a clearance between the first guide bars 10 and the ball screw 20.

Description

technical field [0001] The present invention relates to the expansion of a heat exchanger tube capable of manufacturing a heat exchanger by pressing a tube expanding mandrel for expanding the tube diameter into the tube, and integrating multi-layered cooling fins with a plurality of tubes passing through the cooling fins. diameter device. Background technique [0002] Now, the general structure of the expanding device for heat exchanger tubes is, for example, as shown in FIG. The cylinder 53 is provided with a plurality of pipe expanding mandrels 55 on an operating plate 54 that can be freely raised and lowered by the extension and contraction of the cylinder 53 . [0003] Because the above-mentioned tube expansion mandrel 55 is to be suitable for the pipe diameter and tube length of the heat exchanger (not shown) positioned on the base portion 50 and is formed with a rod body with a small diameter and long size, it is necessary to use the tube expansion mandrel 55 The sup...

AI Technical Summary

Problems solved by technology

[0016] Therefore, it is necessary to form a structure in which the guide rod 58 completely blocks the left and right sides of the base portion 50. Furthermore, various hydraulic units and control panels (not shown) are usually arranged on the rear side of the pipe diameter expanding device. Therefore, it is necessary to create a structure in which the heat exchanger can only be carried in and out from the front of the base portion 50 (arrow P) of the diameter expanding device during diameter expansion.

[0017] In this way, when building a heat exchanger production line that should improve production efficiency, when the heat exchanger is moved to the diameter expanding device, or when the heat exchanger is transported from the diameter expanding device to other places and devices, although it is necessary to be on the left and right sides of the diameter expanding device direction (arrow Q), but due to the above reasons, a returning part (reciprocating conveying route) is generated on the conveying route of the production line. Various problems such as increased manufacturing cost of the device itself