KR200292815Y1 - The manufacturing device of header pipe - Google Patents

Abstract

The present invention relates to a method and apparatus for manufacturing a heat exchanger header pipe. In the conventional header pipe, a lot of debris is generated in the manufacturing process, resulting in an increase in material cost, and in order to manufacture the header pipe having a different length, most devices are replaced. It was developed in order to solve the problem that the length change was virtually impossible and the manufacturing process became a single process and to obtain the effect of easy joining between materials.The circumferential length of the material after processing has a predetermined width to match the design dimension. A feed roller for supplying sheet material, a forming apparatus for processing the sheet material supplied from the feed roller into a pipe having a circular cross section by a roll forming machine, a cutter for conveying the finished pipe and cutting it to a desired size; In order to drill the tube insertion hole of the multistage into the pipe which went through the said cutter, The present invention relates to a heat exchanger header pipe manufacturing apparatus comprising a punching press.

Description

Heat exchanger header pipe manufacturing apparatus

The present invention relates to a heat exchanger header pipe manufacturing apparatus, the conventional header pipe has a lot of debris generated during the manufacturing process has resulted in an increase in the material cost, and in order to manufacture the header pipe having a different length need to replace most devices Therefore, the present invention relates to a heat exchanger header pipe manufacturing apparatus developed to solve the problem that the length change is virtually impossible and the manufacturing process becomes a single process and to obtain the effect of easy joining between materials.

Heat Exchanger Header Pipes In particular, heat exchanger header pipes for automobiles are one of the representative air conditioning products today, connecting two pipes with a plurality of tubes.

FIG. 6 is a view illustrating a change of the plate member 21 according to the conventional manufacturing process of the heat exchanger header pipe, which is manufactured according to the progress of the arrow. First, the tube insertion hole 23 is drilled in the plate member 21 and one header is provided. Each plate 51 forming a pipe is formed and each plate 51 is made by bending.

At this time, between the adjacent diaphragm 51 has a minimum clearance (d) for processing and also has a connecting piece 52 for continuous operation at both ends.

The plate and the connecting piece 52 for such a minimum clearance (d) eventually becomes a waste material and has a problem in that the mold of the press must be replaced in order to change the length of the article because it works with a standardized press. .

7A and 7B are a partial perspective view and a cross-sectional view showing the coupling of the header pipe and the tube manufactured by the above method, in which the tube 4 is inserted into the tube insertion hole 23 and the header pipe 2 and the tube 4 are respectively. ) Is assembled into a furnace after assembly, and the joint is heated. However, in the conventional process, the area of the peripheral end of the tube insertion hole 23 is small. If there are, repeat the process of putting them back into the furnace to ensure the perfect combination of products.

Therefore, in order to effectively join the header pipe 2 and the tube 4, a method of increasing the circumferential end area of the tube insertion hole 23 should be studied, and the effect is to reduce the repetitive work according to the defective rate of the product. You will be able to get

In addition, the joint part of the conventional header pipe is joined so that the cut part 28 cut | disconnected at right angles, respectively.

These cuts 28 are also joined by heat in the furnace, but refrigerant is often leaked due to torsional stress or pressure applied directly to the joints, and thus the cuts 28 are prevented. It is preferable to form the inclined portion to widen the joint area and reduce damage caused by external force, but the conventional process is not easy to process the inclined surface of the joint.

The present invention is designed to solve the above problems, the purpose is to minimize the generation of crushed material according to the manufacturing.

In addition, it is to develop a device that can actively cope with the change of length with a little work without changing the processing device according to the change of the length of the header pipe.

In addition, the periphery end area of the tube insertion hole is widened to facilitate joining with the tube.

Another object of the present invention is to provide a header pipe which can be easily joined to the header pipe and has a strong resistance to external force.

In order to achieve the above object, the present invention provides a feed roller for supplying a plate having a predetermined width so that the circumferential length of the material matches the design dimension after processing, and a circular cross section of the plate supplied from the feed roller by a roll forming machine. Forming apparatus for processing into an excavated pipe, a cutter for transporting the pipe after the forming work and cut into a desired size, and a punching press for drilling a multi-stage tube insertion hole in the pipe through the cutter It relates to a heat exchanger header pipe manufacturing apparatus.

1 is a block diagram showing a manufacturing method according to an embodiment of the present invention

Figure 2 is a perspective view showing a variation of the header pipe according to the present invention

3 is a schematic view showing the configuration of an apparatus according to an embodiment of the present invention

Figure 4 is a cross-sectional view showing the drilling process of the tube insertion hole by the punching press of the present invention

Figure 5 is a partial cross-sectional view showing the tube inserted into the tube insertion hole

6 is a view showing the change of the plate according to the conventional manufacturing process of the heat exchanger header pipe

Figure 7a is a partial perspective view showing the combination of the conventional header pipe and the tube

Figure 7b is a partial cross-sectional view showing the combination of the conventional header pipe and the tube

<Explanation of symbols for main parts of the drawings>

11: supply process 12: forming process

13: Baffle Cutting Process 14: Press Process

15: cutting process

2: header pipe

21: plate 22: pipe

23: tube insertion hole 24: baffle insertion hole

25: seam 26: inclined surface

27: Burr 28: cutout

31: supply roller 32: forming apparatus

33: punching press 34: cutting machine

35: baffle cutter

4: tube

51: plate 52: connecting piece

d: minimum play

Accordingly, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce.

1 is a block diagram showing a manufacturing method according to an embodiment of the present invention and Figure 2 is a perspective view showing a change of the header pipe according to the present invention, a predetermined width so that the circumferential length of the material after processing matches the design dimensions Supply process 11 for supplying a plate 21 having a, and

Forming process 12 for processing the supplied sheet material 21 into a pipe 22 having a circular cross section by a roll forming machine,

Cutting process 15 for cutting the produced pipe 22 to the desired size,

The heat exchanger header pipe manufacturing method is characterized in that a series of processes of the press process 14 for drilling the tube insertion hole 23 of the multi-stage by punching press is continuously performed.

This makes it possible to treat a conventional process that requires several press operations and high material loss in a single process consisting of cutting in a series of feeds.

In addition, the tube inserting hole 23 is drilled after the forming operation 12 manufactured in the form of a pipe, and the bending process by the forming machine or the press is processed in one forming process 12, and the tube inserting hole 23 is formed. Before drilling), the continuous pipe 22 may be cut by a desired length so that products having different lengths may be easily produced with a simple operation.

In addition, between the cutting process 15 and the press process 14, a baffle cutting process 13 for cutting the baffle insertion hole 24 is further formed, wherein the baffle insertion hole 24 is a pipe-shaped joint portion. It will be a preferred embodiment to be formed in the (25) and the tube insertion hole 23 to be formed on the other side to minimize the change of the shape of the pipe 22 or the gap of the joint 25 by the press work.

In addition, the forming process 12 includes a joint forming step of processing both side ends into inclined surfaces 26 having opposite inclinations, respectively, so that the inclined surfaces 26 on both sides are joined to each other to increase the joint area. Bonding will be facilitated even if a force acting to cause the joint to open during operation.

Figure 3 is a schematic diagram showing the configuration of the apparatus according to an embodiment of the present invention, the supply roller 31 for supplying a plate 21 having a predetermined width so that the circumferential length of the raw material after processing and the design dimensions,

Forming apparatus 32 for processing the plate material 1 supplied from the supply roller 31 into a pipe 22 having a circular cross section by a roll forming machine,

Cutter 34 for transporting the pipe 22 through the forming device 32 and cut to a desired size

The heat exchanger header pipe manufacturing apparatus is characterized by consisting of a punching press 33 for drilling the tube insertion hole 23 of the multi-stage in the pipe 22 passed through the cutter 34.

In addition, between the cutter 34 and the punching press 33 is further provided with a baffle cutting machine 35 for cutting the baffle insertion hole 24 and the forming device 32 has opposite ends of each of the opposite ends It may be to include a joint forming roller to be processed to the inclined surface (26).

Therefore, the joint portion 25 is treated with the inclined surface 26 so that the joining area is widened, thereby facilitating joining and increasing durability. In this case, the baffle insertion hole 24 is punched in the joint portion 25 by a cutting operation by a cutter. It will be a preferred embodiment so that the external force by the punching press 33 so as not to weaken the bonding of the joint 25.

4 is a cross-sectional view showing the drilling process of the tube insertion hole 23 by the punching press of the present invention, Figure 5 is a partial cross-sectional view showing a state in which the tube 4 is inserted into the tube insertion hole (23).

Conventionally, the tube insertion hole 23 is drilled prior to the forming process and is subjected to a forming process, so the circumferential end of the tube insertion hole 23 is almost equal to the thickness of the pipe, in this case, the joint surface with the tube 4. Since is the area of the peripheral end, it was well known that increasing the area of the peripheral end in the manufacturing process is a means for facilitating the bonding.

In the present invention, in order to solve this problem, the punching press 33 is punched into the pipe 22 which has been formed to form a burr that is attached to the edge when punched. 27 may be effectively used as a means of widening the joint surface upon engagement with the tube 4.

In addition, it is preferable to perform the punching work after the pipe forming work, that is, the forming work, in consideration of the mechanical principle that the burrs 27 are generated more in the punching work on the curved surface than the conventional punching work in the plane. .

As described above, the present invention has the effect of minimizing the occurrence of the shredding according to the production to reduce the material and the treatment cost due to the shredding.

In addition, it is possible to produce products of different standards in one device by providing a device that can cope with the length change with a slight operation without changing the processing device according to the change of the length of the header pipe.

In addition, the circumferential end area of the tube insertion hole is widened to facilitate the joining with the tube, thereby reducing the number of repeated inspections and heating operations by the furnace, thereby reducing the time required and the defective rate.

Claims (3)

A supply roller 31 for supplying a plate member 21 having a predetermined width so that the circumferential length of the raw material after processing matches the design dimension; Forming apparatus 32 for processing the plate material 21 supplied from the supply roller 31 into a pipe 22 having a circular cross section by a roll forming machine, A cutter 34 for transferring the pipe 22 through the forming apparatus 32 and cutting the pipe 22 to a desired size; Heat exchanger header pipe manufacturing apparatus, characterized in that consisting of a punching press (33) for drilling a multi-stage tube insertion hole (23) in the pipe (22) passed through the cutter (34). The heat exchanger header pipe manufacturing apparatus according to claim 1, further comprising a baffle cutter (35) for cutting the baffle insertion hole (24) between the cutter (34) and the punching press (33). The heat exchanger header pipe manufacturing apparatus according to claim 1, wherein the forming apparatus (32) includes a joint forming roller for processing both end portions into inclined surfaces (26) having opposite slopes, respectively.