Pipe insertion device

Abstract

To provide a tube inserting device capable of automatically inserting a long size metal tube into a through-hole communicating to integrated fins without manual work and cutting the tube to a prescribed length after inserting. This device is provide with feed-in devices 33, 38, in which a long size metal tube is fed in from one side into a through-hole of integrated fins, and a guide device, in which after a guide pin is inserted into the through-hole of the integrated fins from the other side, the guide pin is freely run in the axial direction, the inserted length of the metal tube is measured by measuring a retreating distance of the guide pin which is pushed out with sending-in the metal tube into one side of the through-hole, and when the retreated distance of the guide pin is turned to a prescribed length, the metal tube is cut by a cutter.

Description

technical field [0001] The present invention relates to a tube insertion device for inserting a metal tube into a through hole of a laminated fin formed by stacking a plurality of heat exchanger fins, and a tube insertion machine using the device. Background technique [0002] Fins 10 for heat exchangers (hereinafter simply referred to as fins) used for heat exchange in air conditioners, such as Figure 16 As shown, the through hole 15 with a sleeve formed by protruding to one side of the plate-shaped body 11 of the sleeve 14 surrounds the periphery of the through-hole 12 pierced on the strip-shaped plate-shaped body 11 and along the plate-shaped body. 11 are formed in the lengthwise direction. [0003] A heat exchanger using such fins 10 as Figure 17 As shown, a metal pipe made of a metal with high thermal conductivity such as copper is inserted into the communicating through-holes of the laminated fins 30 stacked by stacking a plurality of fins 10 . [0004] In addition...

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Problems solved by technology

[0005] However, the above-mentioned insertion of the metal tube 35 into the communicating through-hole 20 of the laminated fin 10 is performed manually, and the inserted metal tube 35 must be cut to a predetermined length in advance according to the size of the heat exchanger.

[0006] Since the insertion of the metal tube 35 into the laminated fin 30 in the prior art is performed manually, there is a problem that the insertion operation takes a lot of time and increases the manufacturing cost of the heat exchanger as a whole.

[0007] In addition, since the metal tube 35 must be cut into a predetermined length according to the size of the heat exchanger in advance, there is a problem that an additional cutting process must be provided to reduce the manufacturing efficiency of the heat exchanger. The problem of the space required for pipe making

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