JPS60121023A - Cutting method of aggregated heat exchanger - Google Patents

Abstract

PURPOSE:To cut off efficiently a leaving-end part by inserting a guiding bar into a small hole provided to both ends of the cutting line of the leaving-end width of a connecting part of aggregated fin of aggregated heat exchanger and cutting off the leaving-end part from the small-hole part to the outside. CONSTITUTION:Plural independent heat exchangers are manufactured, by inserting a guiding bar 17 of cutting tool 15 into a small hole 12 provided respectively to both ends of a leaving-end-width cutting line 6 of an aggregated heat exchanger 13, and moving the bar 17 to cut off a leaving-end part 7 of the laminated-layer-fin of heat exchanger 13 from the small hole 12 part to the outside. In this way, the cutting surface is prevented from deformation, because the part 7 is cut by a cutting blade part 16 by adding a tensile force to the part 7 to be cut with the aid of guiding bar 17.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for cutting a collective heat exchanger manufactured by combining a plurality of heat exchangers. [Background of the Invention] Cross-fin tube type heat exchanger The exchanger consists of a thin aluminum plate with multiple pipe insertion holes and a fin with an outer shape machined, multiple ``shaped'' pipes are inserted and fixed into the pipe insertion holes, and a connecting pipe is fixed to the ``shaped'' pipes. Manufactured with

On the other hand, a combination of multiple outer shapes of fins is used,
After manufacturing the heat-containing exchanger using the above-mentioned known manufacturing method, cut a part of the fin with a cutter knife and a laser.

There are also methods of cutting and separating using water jets, etc., but these cutting and separating methods have a certain amount of efficiency.

There were drawbacks in either the simplification of equipment or the appearance of the cut surface.

[Purpose of the invention]

The present invention has been made to overcome these drawbacks. That is, the present invention provides a method for cutting a collective heat exchanger, which allows the heat exchanger to be manufactured by efficiently cutting the collective heat exchanger with simple equipment and without impairing the appearance of the cut surface.

[Summary of the invention]

The present invention is manufactured by stacking collective fins 9 which are a combination of a plurality of desired heat exchanger plate fins having pipe insertion holes 2, inserting a square pipe 14 into the pipe insertion holes 2, and fixing them by expanding the pipes. Gathered heat exchange.

In the heat exchanger 16, insert and move the guide bar 17 of the cutting tool into the small holes 12 on both sides of the edge remaining width cutting line 6 provided at the connection part of the fin, and move the guide bar 17 of the cutting tool to cut the edge remaining part of the heat exchanger fin. The present invention relates to a method of cutting the collective heat exchanger 16 by cutting the heat exchanger 7 outward from the small hole 12 portion.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 is a diagram illustrating the process of manufacturing the collective fins 9. As shown in FIG. The collecting fins 9 are formed by forming a large number of pipe insertion holes 2 in the thin aluminum plate 1, and have a width cutting blade A5 and a width cutting blade B.
4. Cut along the continuous width cutting line 5 and the remaining width cutting line 6 that will yield the desired fin. Next, a small hole 12 is punched out in the left-end portion 7 to connect both ends of the left-end width cutting line 60, and the length cutting blade 8 is used to cut and separate the center portions of the adjacent left-end width cutting lines 60.

FIG. 6 is a diagram illustrating a method of manufacturing the collective heat exchanger 16. The collective heat exchanger 16 stacks a large number of joint fins 9,
It is manufactured by inserting the square shaped pipe 14 into the pipe insertion hole 2, fixing the collecting fin 9 with a pipe expansion press, and fixing the connecting pipe 19 by brazing, soldering, etc.

The desired independent heat exchanger 18 is the collective heat exchanger 160 described above.
Cut the remaining part 7 of the fin with a cutter knife.

Cut it using a laser, water jet, etc. and separate it into several 4i pieces.

FIG. 4 is a diagram illustrating a method of cutting a collective heat exchanger according to the present invention. The cutting method of the present invention involves inserting and moving a cutting tool 150 and guide bar 17 into the small holes 12 provided at both ends of the cutting line B, which has an end remaining width of the collective heat exchanger 16. A plurality of independent heat exchangers 18 are manufactured by cutting the section 7 outward from the small holes 12. Note that the mounting angle θ11 of the cutting blade 16 with respect to the guide bar 17 and the shape of the cutting blade 16 may be arbitrary, but in order to prevent fin deformation, the smaller the angle θ11, the better.
Further, it is preferable that the cutting edge portion 16 has a double-edged edge shape.

In this way, the guide bar 17 applies a tensile force to the edge remaining part 7 to be cut, and the cutting blade part 16 can cut it, so the cut surface is not deformed and the heat is collected at a low load. The exchanger 16 can be cut and separated.

As explained above, the method of the present invention allows the collective heat exchanger to be easily cut and separated using a simple cutting tool without deforming the cut portion of the collective heat exchanger.
This makes it possible to manufacture an automatic cutting device with a simple and efficient mechanism.

〔Effect of the invention〕

According to the present invention, the cutting tool 150 and the guide bar 17 are inserted and moved into the small holes 12 provided at both ends of the edge remaining width cutting line 6 provided at the connection portion of the end fin 9 of the collective heat exchanger 16, By cutting the remaining end portion 7 outward from the small hole 12, it is possible to cut and separate the remaining end portion 7 without deforming it.

As described above, if the method of the present invention is used, the collective heat exchanger 16
This provides a simple cutting device that can be easily automated, and this cutting method is particularly effective for factory automation. The industrial value of this invention is extremely large.

[Brief explanation of drawings]

Figure 1 is a perspective view illustrating the process of forming the fins;
Fig. 2 is a perspective view of a collective fin with round holes provided at both ends of the left-end width cut vIfTH, and Fig. 6 is a perspective view of a collective heat exchanger.
FIG. 4 is a cross-sectional view of the fin cutting method, and FIG. 5 is a perspective view of the collective heat exchanger after cutting. 1... Aluminum thin plate, 2... Pipe insertion hole, 6
...Width cutting blade A, 4...Width cutting blade B, 5...Continuous width cutting line, 6...Edge leaving width cutting line, 7...End leaving part, 8...Length Cutting blade, 9... Collective fin, 10.
...Stacking par, 11...Angle, 12...Small hole, 16...Collective heat exchanger, 14...0-shaped pipe,
15... Cutting tool, 16... Cutting blade portion, 17... Guide (-518... Independent heat exchanger, 19... Joint pipe. Patent attorney: Akio Takahashi)

Claims (1)

[Claims] 1. In a collective heat exchanger manufactured by stacking collective fins made by combining a plurality of desired heat exchanger plate-like fins having pipe insertion holes, inserting square pipes into the pipe insertion holes, and fixing them by pipe expansion, The guide cover of the cutting tool is inserted and moved into the small holes at both ends of the cutting part with an end remaining provided at the connection part of the fin, and the remaining end part of the heat exchanger fin is cut outward from the small hole part. How to cut a collective heat exchanger.