JPH07178486A - Method and device for manufacturing header tank of heat exchanger - Google Patents

Abstract

PURPOSE:To continuously manufacture a header tank where the waste of the stock is eliminated, and the changing works of a die is reduced by feeding the stock in the longitudinal direction at the prescribed pitch, successively forming a tube inserting in this fed stock, and successively bend the plate-shaped stock to be fed. CONSTITUTION:A press 18 is provided with a lower plate 19 and an upper plate 20 which are arranged opposite to each other, and also provided with a driving device to press a lower plate 10 and an upper plate 20 so as to be opposite to each other. A lower die 21 of a press die 17 is fixed to the lower plate 19, and an upper die 22 is fixed to the upper plate 20, and a brazing sheet 4A which is a stock is fed between the lower die 21 and the upper die 22, and the brazing sheet is fed at the prescribed feeding pitch, the lower plate 19 and the upper plate 20 are pressed against each other to execute the press forming. A heater tank 4 continuous from the front side of the press 18 can be obtained by repeating the feeding of the brazing sheet 4A and the press.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a header tank of a heat exchanger, which is formed by rolling a flat material into a tubular shape by using a mold or the like.

[0002]

2. Description of the Related Art In a conventional heat exchanger, for example, a laminated heat exchanger, a plurality of tubes and fins are alternately laminated, and both ends of these laminated tubes are inserted into an insertion hole provided in a header tank. The header tanks are inserted and joined, and the openings at the upper and lower ends of each header tank are closed by blind caps.
Further, a partition plate is provided at a predetermined position of each header tank, and a plurality of heat exchange media meanders and flows between the inlet joint and the outlet joint attached to the header tank.

Conventionally, a header tank used in such a laminated heat exchanger has been formed in a circular tube shape by rolling a flat brazing sheet covered with a clad material and pressing the brazing sheet into a tubular shape. Known (for example, JP-A-2-55661 and JP-A-3-279795).
issue).

In this type of header tank, a brazing sheet whose both surfaces are covered with a brazing material is used, and as shown in FIG. 21, the same plane portion of the brazing sheet 32 is sequentially press-molded by a plurality of molds. It was formed by a progressive press.

In the progressive press, a plurality of dies (not shown) having different curvatures are sequentially installed in the feeding direction F of the brazing sheet 32, and the brazing sheet 32 is placed in these arranged dies. By sequentially transferring and stopping at predetermined intervals and press-molding with respective molds, as shown in FIGS. 22 (a) to 22 (d), the respective plate portions to be the header tank are sequentially It is rolled to form a circular tubular header tank.

Further, in such a manufacturing method, as shown in FIG. 21, the header tank is molded by each mold in the width direction within the brazing sheet 32, that is,
Header tanks are individually formed along a direction orthogonal to the feeding direction F of the brazing sheet 32.

[0007]

However, in the conventional method and apparatus for manufacturing the header tank of the heat exchanger, since the header tank is formed inside the brazing sheet, which is a raw material, it is basically required. , The entire surface of the brazing sheet is not used for forming the header tank,
The surrounding parts, which are unnecessary for forming the header tank, are wasted as a material, resulting in poor material yield and high manufacturing cost.

Further, since the header tanks are individually formed along the width direction of the brazing sheet, when the header tank is manufactured, the length dimension of the header tank is defined by the width dimension of the brazing sheet as a raw material. Therefore, in order to manufacture header tanks having different lengths depending on the type of vehicle to be mounted, it was necessary to manufacture them individually. In other words, if the header tanks to be manufactured have different lengths, it is necessary to prepare and prepare brazing sheets with widths corresponding to the header tanks, which complicates material management during header tank manufacture. It was an obstacle to improving productivity.

In this case, it is possible to always use a brazing sheet having a width dimension corresponding to the maximum length dimension of the header tank in order to avoid the complexity of managing the material when manufacturing the header tank. In that case, there is a problem that the waste of material that is not needed when manufacturing the header tank is significantly increased.

Furthermore, in the die for progressive press, in order to manufacture one type of header tank, it is necessary to provide a plurality of dies constituting the progressive press, so that the length dimension corresponding to the vehicle die is different. In order to manufacture the header tank, it is necessary to prepare each progressive press for each vehicle type, which increases the cost, and there is a disadvantage that the management of the vehicle type and the change work according to the vehicle type are complicated.

In this case, it is conceivable that a progressive press die corresponding to the header tank having the maximum length dimension is always used as the progressive press, but in this case, a progressive press machine is required more than necessary. There is a problem that requires a large one.

Therefore, according to the present invention, by forming the header tank along the material feeding direction, it is possible to eliminate the waste of the material, the work of changing the mold can be reduced, and the continuous header tank can be manufactured. It is an object of the present invention to provide a method and an apparatus for manufacturing a header tank of a heat exchanger that enables the above.

[0013]

SUMMARY OF THE INVENTION The present invention is a header tank manufacturing method for a heat exchanger in which a flat plate-shaped material is rolled to form a circular header tank, and the material is fed at a predetermined pitch in the longitudinal direction. A tube-shaped header tank is formed by sequentially forming tube insertion holes in the material to be fed and further bending the flat material to be fed sequentially at the same time as or after forming the tube insertion holes. Is formed.

Further, the present invention is a header tank manufacturing apparatus for a heat exchanger in which a flat plate-shaped material is rolled to form a circular header tank, the step of feeding the material at a predetermined pitch in the longitudinal direction, And a continuous pressing step in which various bending dies that are arranged along the feeding direction and that form a tube insertion hole and sequentially bend the fed flat material are provided. It is a thing.

Further, the present invention is a header tank manufacturing apparatus for a heat exchanger in which a flat plate-shaped material is rolled to form a circular header tank, the step of feeding the material at a predetermined pitch in the longitudinal direction, While being arranged along the feeding direction, the pressing step of forming a tube insertion hole, and along the feeding direction is arranged on the downstream side of the pressing step, and the flat plate-shaped material is sequentially formed by roll forming. And a roll forming step of bending.

Further, the present invention is a header tank manufacturing apparatus for a heat exchanger in which a flat plate-shaped material is rolled to form a circular header tank, the step of feeding the material at a predetermined pitch in the longitudinal direction, A pressing step of arranging along the feeding direction and forming a tube insertion hole and partially bending the fed flat material, and a downstream side of the pressing step along the feeding direction. And a roll forming step of sequentially bending the partially bent material by roll forming.

[0017]

[Operation] When the header tank is manufactured, the flat material is
For example, it is fed continuously between the lower die and the upper die of the die while feeding at a predetermined feeding pitch and stopping.

Then, when the material is stopped, the lower die and the upper die are press-formed to form necessary insertion holes and holes such as flat tubes by various punches, and a flat plate is formed by various continuous bending dies. The material is sequentially bent, and finally a round header tank is continuously formed along the feeding direction of the material.

Therefore, since the header tank is continuously formed along the feeding direction of the plate-shaped material, all the materials can be used when manufacturing the header tank, and the unnecessary parts as the material can be used. Does not occur, waste of the material is eliminated, the yield of the material is improved, and the manufacturing cost can be reduced.

If the header tanks to be manufactured have the same pipe diameter, even if the header tanks have different lengths, it is possible to use the flat material having the same width as it is. It is not necessary to change the material having different width dimensions for each vehicle model, which simplifies the management of the material when manufacturing the header tank, and enables multi-product production, thus improving productivity.

Further, since the header tank can be manufactured by one set of lower mold and upper mold, a plurality of molds for each step as in the conventional case is not required, the number of molds can be reduced, and the cost of mold manufacture can be reduced. And the management of the mold are simplified, and even when the header tank having the maximum size is manufactured, the mold and the press machine do not become larger than the conventional one.

In the present invention, only by the press,
It can also be carried out by combining pressing and roll forming. Further, even in the case of only pressing, the tube insertion hole forming step and the step of rolling the raw material to form the circular header tank can be performed simultaneously or at different times.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, in the heat exchanger 1 of this embodiment, a plurality of flat tubes 2 and wavy fins 3 are alternately laminated, and both ends of the laminated flat tubes 2 are header tanks 4, respectively. It is inserted into the insertion hole 5 and connected for communication. Reference numeral 6 denotes side plates having a U-shaped cross section disposed on the upper end side and the lower end side of the laminated flat tubes 2. Both ends of the side plate 6 are also dedicated insertion holes provided in the header tank 4. 7 is inserted and joined.

Partition plates 8 are provided at the upper and lower open end portions of each of the header tanks 4, whereby the upper and lower end openings are closed. Further, a partition plate 8 is provided at a required position of the header tank 4, and each hole 1 provided in the header tank 4
The inlet joint 12 and the outlet joint 13 are inserted into and joined to the ports 4 and 15, and the heat exchange medium is meandered a plurality of times between the inlet joint 12 and the outlet joint 13.

The flat tube 2 is formed by bending one plate or by stacking two plates, and has a structure in which a large number of beads whose tips are in contact with each other are provided on the flat surface. As shown in FIG. 2, it is inserted into the insertion hole 5 provided in the header tank 4 and joined by integral brazing. Further, the insertion hole is, as shown in FIG.
The flat tube 2 is formed in a shape that matches the cross-sectional shape of the flat tube 2.

As shown in FIG. 2, the header tank 4 is formed in a circular tube shape by brazing a brazing sheet 4A, which is a raw material, and joining both ends thereof, and the partition plates 8, the flat tubes 2, and Insertion holes 5, 7, 9 for inserting the side plate 6 and holes 14, 15 for inserting the inlet / outlet joints 12, 13 are provided. Further, as shown in FIG. 2, both joint surfaces of the brazing sheet 4A, which is a rolled material, are formed as slant joint surfaces that are obliquely inclined with respect to the circumferential direction of the header tank 4.
In this embodiment, a brazing sheet 4A whose inner and outer surfaces are covered with a brazing material is used as a flat plate member which is a material forming the header tank 4.

Such a header tank 4 is continuously formed along the feeding direction of the brazing sheet 4A, which is a raw material, by a press machine 18 equipped with a die 17 as shown in FIGS. .

The press machine 18 of this embodiment comprises a lower table 19 and an upper table 20 which are arranged so as to face each other.
And, as indicated by an arrow P in FIG. 5, a lower base 19 and an upper base 20.
Drive device (not shown) that presses and toward each other
Is equipped with.

A lower mold 21 of a mold 17 is fixed to the lower base 19, and an upper mold 22 is fixed to the upper base 20,
As shown in FIGS. 4 and 5, the brazing sheet 4A, which is a material, is fed between the lower die 21 and the upper die 22, and the brazing sheet 4A is fed at a predetermined feeding pitch. Are pressed against each other to perform press forming, and by repeating feeding and pressing of such a brazing sheet 4A, the header tank 4 continuous from the front side of the press machine 18 shown by the arrow F in FIGS. 4 and 5 is formed. can get.

As shown in FIG. 6, the lower mold 21 has a concave mold portion 21a whose curvature radius gradually decreases so that the brazing sheet supplied from the direction of the arrow is sequentially bent from a flat plate shape. , 21b, and the upper mold 22
As shown in FIG. 7, a convex mold part 22a fitted to the mold part 21a of the lower mold 21 and a concave mold part 22b corresponding to the mold part 21b of the lower mold 21 are formed. I have it. In these upper and lower molds 21 and 22, the mold parts 21a and 22
In a, the brazing sheet 4A is formed in a U shape, and in the mold parts 21b and 22b, the U shaped brazing sheet 4A is formed in an arc shape. That is, in the latter half of the die parts 21b and 22b, the upper part of the U-shaped brazing sheet 4A is formed in the arc shape of the die part 22b of the upper die 22, and together with the die part 21b of the lower die 21, The arc-shaped header tank having a predetermined shape is formed.

Further, in the lower mold 21 and the upper mold 22, as shown in FIGS. 8A to 8I, along the feeding side of the header tank 4 from the supply side of the brazing sheet 4A,
Sequentially, both ends die 23A for forming both ends of the brazing sheet 4A on an inclined surface, a partition plate punch 23B for forming an insertion hole 9 of the partition plate 8, an inlet / outlet joint hole 14 for connecting the inlet / outlet joints 12 and 13, A punch 23C for an inlet / outlet joint forming 15 is provided, and further, a brazing sheet 4A.
Is provided with an end bending die 23D for slightly bending both ends, a first bending die 23E for totally bending the brazing sheet 4A, and a flat tube punch 23F for forming an insertion hole 5 into which the flat tube 2 is inserted. And a second bending mold 23 for further bending the brazing sheet 4A.
G, a third bending die 23H that bends the brazing sheet 4A into a circle, and a final bending die 23I that finally bends the brazing sheet 4A into a circle are provided.

As described above, in the die 17, various insertion holes 5, 7, 9 and holes are formed so that the header tank 4 is continuously formed along the feeding direction of the brazing sheet 4A which is a material. 14 and 15 are formed, and the brazing sheet 4A is bent.

The burring is provided in the insertion hole 5 of the flat tube 2 in order to increase the brazing surface immersion with the flat tube 2 inserted in the insertion hole 5 to ensure brazing property. Is.

When manufacturing the header tank 4 in such a press machine 18, the brazing sheet 4 having a predetermined width corresponding to the pipe diameter as shown in FIGS. 11 (a) and 11 (b).
A is used, as shown in FIG. 5, a lower mold 21 and an upper mold 2
A brazing sheet 4A having a predetermined width is fed between the two.

In the feeding of the brazing sheet 4A, the brazing sheet 4A is fed depending on the distance between the insertion holes 5 of the flat tubes 2 provided in the lower mold 21 and the upper mold 22 and the distance between the punches 23F for forming the insertion holes. Although the feeding pitch is different, the feeding is performed at a feeding pitch set in advance corresponding to the interval of the flat tube insertion holes 5 and then stopped, and press molding by the lower die 21 and the upper die 22 is sequentially performed. .

Then, by press-forming while feeding at a predetermined feeding pitch, (a) to (i) in FIG.
The header tank 4 is formed in the order shown in FIG. It should be noted that the arrows a to i in FIG. 5 correspond to FIGS. 8A to 8I, and those formed by this are shown in FIGS. 9A to 9I. Specifically, the molding is performed in the order shown in FIGS.

That is, as shown in FIGS. 12 (a) to 12 (j), both ends of the brazing sheet 4A are formed as inclined surfaces: FIG. 12 (a), and the insertion hole 9 of the partition plate 8 is formed: 12 (b), the inlet / outlet joint holes 14 and 15 for connecting the inlet / outlet joints 12 and 13 are formed: FIG.
(C), both ends of the brazing sheet 4A are slightly bent: FIG. 12 (d), the brazing sheet 4A is roughly bent as a whole: FIG. 12 (e).

Further, the insertion hole 5 into which the flat tube 2 is inserted
12 (f), the brazing sheet 4A is further bent into a circle: FIGS. 12 (g) and (h), the brazing sheet 4A is finally bent into a circle in FIG. 12 (i), which is required by a cutter not shown. Cut to length: Figure 12
(J) Then, at the time of integral brazing, the header tank 4 is formed by joining both inclined surfaces.

Therefore, in this embodiment, since the header tank is continuously formed along the feeding direction of the brazing sheet which is the raw material, all the brazing sheets of the raw material are used when manufacturing the header tank. And then
Unnecessary parts do not occur in the material, waste of the material is eliminated, the yield of the material is improved, and the manufacturing cost can be reduced.

If the header tanks to be manufactured have the same pipe diameter, even if the header tanks have different lengths, the brazing sheet having the same width can be used as it is by simply changing the feeding pitch. Because it will be possible
It is no longer necessary to change brazing sheets with different width dimensions for each vehicle model, which simplifies the management of materials when manufacturing header tanks, and enables high-mix production, which can also improve productivity. Become.

Furthermore, since the header tank can be manufactured by one set of lower mold and upper mold, a plurality of molds for each step as in the conventional case is not required, the number of molds can be reduced, and the cost of mold manufacture can be reduced. And the management of the mold are simplified, and even when the header tank having the maximum size is manufactured, the mold and the press machine do not become larger than the conventional one.

In the above embodiment, a pair of lower die and upper die are provided with various bending dies that are continuous with punches for forming various insertion holes and holes. It is also possible to separate the bending process. In this case, a hole forming die for performing a punching step for forming various insertion holes and holes and a bending die for performing a bending step for bending a brazing sheet are used. It may be installed upstream of the mold.

Next, a second embodiment of the present invention will be described.

In the present embodiment, as shown in FIG. 13, a step of forming various insertion holes 5, 7, 9 and holes 14, 15;
An end bending step of slightly bending both ends of the brazing sheet 4A is performed by a hole forming die 25 including a lower die and an upper die, and a bending step of bending the brazing sheet 4A into a circle is performed by roll forming with rollers 26 and 27. This is done by

That is, as shown in FIG. 13 and FIGS. 14A to 14D corresponding to the arrows a to d in FIG. 13, various insertion holes 5, 7, A die 25A having the holes 9 and the holes 14 and a die 25B for slightly bending both sides of the brazing sheet 4A are provided, and a roller 26 for roughly bending the brazing sheet 4A is provided downstream of the die 25, and a brazing sheet. The roller 27 that bends 4A in a round shape is sequentially installed.

The various insertion holes 5, 7, 9 and the holes 14, 1
5, the lower die 21 and the upper die 22 of the die 25A for providing 5 are die for both ends which form both ends of the brazing sheet 4A on inclined surfaces, punches for partition plates which form the insertion holes 9 of the partition plate 8,
An inlet / outlet joint hole 14, which connects the inlet / outlet joints 12 and 13,
15 for punching inlet / outlet joints, punch 5 for inserting flat tube 2, punch for flat tube for forming burring in insertion hole 5, side plate for inserting side plate 7 for inserting side plate 6 Each punch is provided.

Further, the lower mold 21 and the upper mold 22 of the mold 25B for slightly bending both sides of the brazing sheet 4A,
An end-bending die for slightly bending both ends of the brazing sheet 4A is provided.

Further, the various insertion holes 5, 7, 9 and the hole 1 described above.
In the mold 25A provided with 4, 15,
As shown in (a) and (b), when the flat tube punch is used to form the insertion hole 5 into which the flat tube 2 is inserted, the burring 5a of the insertion hole 5 is simultaneously formed.

Further, in this embodiment, various insertion holes 5,
7 and 9 and punches that form holes 14 and 15,
5A and 25B are provided so as to be retractable, and in order to set and form the intervals of the various insertion holes 5, 7, 9 and the holes 14, 15, they are appropriately protruded to insert the insertion holes 5, 7, 9 respectively. And hole 1
4 and 15 can be formed.

Then, both ends of the brazing sheet 4A are formed into inclined surfaces by the mold 25A, the insertion holes 9 of the partition plate 8 are formed, and the inlet / outlet joint holes 14 and 15 for connecting the inlet / outlet joints 12 and 13 are formed. The burring 5a is formed in the insertion hole 5 and the insertion hole 5 into which the flat tube 2 is inserted, and the side plate insertion hole 7 into which the side plate 6 is inserted is formed.

Further, both ends of the brazing sheet 4A are slightly bent by the mold 25B, and then the roller 26
As a result, the brazing sheet 4A is roughly bent,
The brazing sheet 4A is bent into a round shape by the roller 27 and cut into a required length by a cutter (not shown).

The flat tube punch provided in the mold 25B to form the insertion hole 5 of the flat tube 2 is not limited to the punch shown in FIG. You may form in a shape as shown to (a), (b).

The flat tube insertion hole 5 having the shape shown in FIGS. 16 (a) and 16 (b) is formed in a punch type in which notches 5b are simultaneously formed at both ends of the elongated insertion hole 5.
After roll-forming into the final tubular shape as shown in FIG. 14 (d), as shown in FIG. 17, a die 30 including a lower die 21 and an upper die 22 provided with punches 29 for forming burring. Thus, the burring 5a is formed.

Therefore, in this embodiment, since the punches for forming the various insertion holes and holes are provided so as to be retractable in the respective molds, after the insertion holes and holes are formed, the punching and brazing are performed. By burying the punch when removing the sheet, it is possible to easily remove the brazing sheet from the punch. As a result, the productivity is increased and the same effect as that of the above-described embodiment is obtained.

[0056]

As described above, according to the present invention,
Since the header tank is continuously formed along the feeding direction of the flat material, it is possible to use all of the materials when manufacturing the header tank, and unnecessary parts do not occur as materials, Since the waste of the material is eliminated, the yield of the material is improved and the manufacturing cost can be reduced.

If the header tanks to be manufactured have the same pipe diameter, even if the header tanks have different lengths, it is possible to use the flat plate-shaped material having the same width as it is. It is not necessary to change the material having different width dimensions for each vehicle type, which simplifies the management of the material when manufacturing the header tank, and enables multi-product production, thus improving productivity.

Furthermore, since the header tank can be manufactured by using one set of the lower mold and the upper mold, and by using the roll if necessary, a plurality of molds for each step as in the conventional case becomes unnecessary, and the metal mold is not required. The number of molds can be reduced, the cost of mold manufacturing is reduced, and the management of molds is simplified, and even when manufacturing the header tank of the maximum size, the mold and press machine are more It has advantages such as no increase in size.

[Brief description of drawings]

FIG. 1 is a front view of a heat exchanger according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a header tank.

FIG. 3 is a front view showing an insertion hole of a flat tube provided in a header tank.

FIG. 4 is a side view showing the press machine.

FIG. 5 is a side view showing a mold.

FIG. 6 is a perspective view showing a lower mold.

FIG. 7 is a perspective view showing an upper mold.

8 (a) to (i) are schematic views showing various molds.

9A to 9I are schematic views showing brazing sheets that are sequentially formed.

FIG. 10 is a front view showing a brazing sheet that is sequentially formed into a circle.

11A is a plan view showing a brazing sheet, FIG.
(B) is a front view showing a brazing sheet.

12A to 12J are plan views showing brazing sheets that are successively formed.

FIG. 13 is a plan view showing a header tank molding apparatus according to the second embodiment of the present invention.

14 (a) and 14 (b) are schematic views showing a mold,
(C) And (d) is a front view which shows the roller which bends a brazing sheet.

15A is a front view showing an insertion hole formed in a brazing sheet, and FIG. 15B is a vertical sectional view of the insertion hole.

16A and 16B show another example of forming the insertion hole, FIG. 16A is a front view showing the insertion hole formed in the brazing sheet, and FIG.
FIG. 4 is a vertical sectional view of an insertion hole.

FIG. 17 is a front view showing a mold for forming burring in the flat tube insertion hole.

FIG. 18 is a front view of the brazing sheet showing the header tank forming process according to the conventional example.

19 (a) to 19 (d) are cross-sectional views showing a molding part molded in the brazing sheet.

[Explanation of Codes] 1 heat exchanger 2 flat tube 4 header tank 4A material 5,7,9 insertion hole 14,15 hole 17 mold 21 lower mold 22 upper mold 23A to 23I each mold 25A hole forming mold 26, 27 roller

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display area F28F 9/02 301 C

Claims (6)

[Claims] 1. A method for manufacturing a header tank of a heat exchanger, comprising rolling a flat material to form a circular header tank, wherein the material is fed at a predetermined pitch in the longitudinal direction, and the fed material is A tube insertion hole is sequentially formed, and at the same time as or after the tube insertion hole is formed, the flat material to be fed is sequentially bent to form a circular header tank. Heat exchanger header tank manufacturing method. 2. A header tank manufacturing apparatus for a heat exchanger in which a flat plate-shaped material is rolled to form a cylindrical header tank, wherein a step of feeding the material in a longitudinal direction at a predetermined pitch, and a step of feeding the material in a feeding direction. And a continuous pressing step in which various bending dies that form tube insertion holes and sequentially bend the fed flat plate material are continuously provided. Heat exchanger header tank manufacturing equipment. 3. A hole forming die comprising upper and lower dies provided with various punches for forming necessary insertion holes and holes such as a flat tube, and the flat plate arranged downstream of the hole forming die. 3. A header for a heat exchanger according to claim 2, wherein a bending die composed of an upper die and a lower die which are continuously provided with various bending dies for sequentially bending a strip-shaped material is provided. Tank manufacturing equipment. 4. A hole forming mold comprising upper and lower molds provided with various insertion holes such as a flat tube and various punches for forming the hole, and the flat plate arranged on the downstream side of the hole forming mold. 3. A header tank for a heat exchanger according to claim 2, further comprising a bending die composed of an upper die and a lower die which are continuously provided with various bending dies for sequentially bending a strip-shaped material. Manufacturing equipment. 5. A header tank manufacturing apparatus for a heat exchanger, wherein a flat plate-shaped material is rolled to form a circular header tank, wherein a step of feeding the material in a longitudinal direction at a predetermined pitch, and a step of feeding the material along a feeding direction. And a roll forming step of forming a tube insertion hole, and a roll forming step of bending the flat plate material sequentially by roll forming while being arranged downstream of the press step along the feeding direction. An apparatus for manufacturing a header tank of a heat exchanger, comprising: 6. A header tank manufacturing apparatus for a heat exchanger in which a flat plate-shaped material is rolled to form a cylindrical header tank, the step of feeding the material at a predetermined pitch in the longitudinal direction, and the step of feeding the material along the feeding direction. And a press step of forming a tube insertion hole and partially bending the flat material to be fed, and a press step that is arranged downstream of the press step along the feed direction. And a roll forming step of sequentially bending the partially bent raw material by roll forming, a header tank manufacturing apparatus for a heat exchanger.