JPH1190560A - Fin force-fitting method into base plate and its force-fitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To force-fit a fin by a relatively small load and moreover to improve fixing strength by obtaining a large fillet at the time of brazing after force- fitting. SOLUTION: Only one fin is taken out of a magazine 20 housing many fins 10 with a fin transferring body 38 and transferred, and the transferring fin is butted to a fin stopper and stopped at the intermediate position. Under this state, the tip end of the fin is worked into projecting and recessing parts with a punch and a female die, the fin is further transferred with the fin transferring body, and the worked projecting and recessing parts of the tip end of the fin are force-fitted into the groove of a base plate 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for press-fitting a fin into a base plate used in a heat exchanger such as a radiator for dissipating heat such as a heat sink or a thermosiphon or a heat receiver for removing heat from the surroundings. It relates to a press-fitting device.

[0002]

2. Description of the Related Art Generally, a radiator such as a heat sink or a heat exchanger such as a heat receiver used for thawing food has a structure in which a large number of metal plates are arranged at predetermined intervals on a metal substrate so as to be orthogonal to the metal substrate. It has a heat exchange section. The heat exchange section having the above-described configuration may be formed by casting into a mold and integrally forming the heat exchange section, or may be formed by inserting the tips of metal plates one by one into a large number of grooves formed in a metal substrate. Conventionally, the heat exchange portion having the structure in which the tips of the respective metal plates are inserted into the plurality of grooves of the latter metal substrate has been generally manufactured by the following method.

As shown in FIG. 18, a large number of grooves 2 are formed on the surface of a base plate (metal substrate) 1 in advance, and the tips of fins (metal plates) 3 are pressed into these grooves 2. Thereafter, the periphery of the groove 2 is plastically deformed by, for example, driving a punch 4 around the groove 2 to reduce the width of the groove 2 so that the fin 3 is prevented from coming off. And, if necessary, the tip press-fitting portion of the fin 3 was fixed by brazing.

[0004]

However, the above-mentioned method of press-fitting the fins into the base plate has the following drawbacks.

That is, the base plate 1 is plastically deformed,
The process of narrowing the width of the groove 2 is performed. A considerable load is required to plastically deform the base plate 1, and furthermore, the plastic deformation of the base plate 1 in the plane direction is difficult, and the processing is troublesome. was there. Further, since the processing is performed after press-fitting the fins 3, the fins 3 themselves become resistance and the width dimension of the groove 2 cannot be reduced as desired.
Had a drawback that the pull-out strength was low. Further, even in the subsequent brazing operation, only a small fillet F was obtained as shown in FIG. 19, and there was a disadvantage that the fixing strength was weak.

The present invention has been made in view of the above circumstances, and an object thereof is to perform a press-fitting operation of a fin with a relatively small load, and to obtain a large fin in a brazing after press-fitting. To provide a press-fitting method and apparatus.

[0007]

The present invention has the following features to attain the object mentioned above. That is, claim 1
The method of press-fitting the fins into the base plate described above is as follows: each of the tips of the fins is unevenly formed, and the unevenly processed portion is inserted into a number of grooves formed in advance on the base plate, and the base plate is inserted in a direction orthogonal to the grooves. It is characterized by being sequentially press-fitted and fixed while moving by one pitch of the groove.

According to a second aspect of the invention, there is provided a fin magazine for accommodating a large number of fins.
A fin moving mechanism that removes only one fin from the fin magazine and moves the fin, a fin stopper that stops the fin moved by the fin moving mechanism at an intermediate position in the moving direction, and a fin that stops at the intermediate position. A punch that abuts from one side and cooperates with a female mold on the opposite side with the fin interposed therebetween to form a concave and convex end of the fin, and after the concave and convex processing is completed, the fin is further moved by the fin moving mechanism. A base plate moving mechanism for intermittently moving a plurality of base plates formed in parallel with each other at predetermined intervals with grooves into which the concave-convex portion at the tip is press-fitted at predetermined intervals, in a direction perpendicular to the grooves, by one pitch of the grooves. It is characterized by having.

According to a third aspect of the present invention, the fin moving mechanism includes a reciprocating fin moving body made of a flat plate, and the fin moving mechanism is provided at a position facing the fin magazine of the fin moving body. A recess for accommodating only one fin is formed, and the recess is provided with an opening of a suction mechanism for suctioning the fin under negative pressure.

According to a fourth aspect of the present invention, the fin moving body reciprocates in synchronization with the base plate feeding of the base plate moving mechanism.

According to a fifth aspect of the present invention, in the apparatus for press-fitting a fin into a base plate, the fin moving mechanism moves the fin to an intermediate position, and moves the fin into a groove of the base plate by press-fitting. It is characterized in that a separate second moving means is provided.

According to a sixth aspect of the present invention, the fin stopper is arranged adjacent to the female mold, and the fin stopper is formed with a concave portion so as to avoid the punch. It is characterized by the following.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method and an apparatus for press-fitting a fin into a base plate according to the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the method of the present invention. As shown in the drawing, in the present invention, first, each tip 11 of a large number of fins 10 is processed to be uneven. As for the method of forming the unevenness, a metal flat plate serving as the fin 10 is sandwiched between a large number of punches and a female mold one by one immediately before the press-fitting process as described later, and is also dedicated separately from the press-fitting process. And the like, and a method of continuously embossing a metal flat plate using the above press machine, and other methods can be appropriately selected as needed, including other methods.

Further, when the concave and convex processing is performed, the side on which the convex portion is formed, that is, the side on which the protrusion protrudes, may be one side 10a and the other side 10b of the fin 10 or both may be protruded alternately. However, one side 10a and the other side 10
In the case of protruding to both sides, when pressed into a groove 13 of the base plate 12 described later, the press-fitted portion looks undulating, which is not preferable in design. For this reason, it is preferable that one of the sides on which the convex portion is formed is provided.

Next, the front end 11 having the unevenness is moved to a plurality of grooves 13 formed in advance on the base plate 12 by one pitch p of the grooves 13 in a direction orthogonal to the grooves 13. Then press in and fix. That is, while the base plate 12 is intermittently moved by a pitch p in the direction indicated by the arrow A in FIG. 1 by a base plate moving mechanism (not shown), the fins 10 are individually moved one by one from above into the grooves 13 by a suitable moving means such as a cylinder. Press-fit.

At this time, as shown in FIG.
The width Wa of the leading end 11 and the width Wb of the groove 13 are preferably set slightly larger than Wb in consideration of the press-fitting allowance. In other words, Wa-Wb is the press-fitting allowance.
mm is preferable. The larger R dimension of the groove 13 of the base plate 12 and the top 13a is 0.3 mm.
About 0.5 mm is preferable. If it is smaller than this, it becomes difficult to press-fit the fins 10, and if it is larger than this, engagement at the time of press-fitting of the fins becomes loose. Further, the pitch pa of the uneven portion of the fin 10 is preferably about 25 mm. If the pitch dimension is larger than this, the pull-out strength at the time of press-fitting is weakened, and if it is smaller than this, the rigidity of the tip of the fin 10 is increased and the press-fitting into the groove 13 becomes difficult. Thereafter, the fin press-fit portion is brazed as necessary (see FIG. 16).

FIGS. 2 to 14 show an embodiment of the apparatus of the present invention, in which the above-described invention method is suitably implemented. The press-fitting device according to the present invention is moved by a fin magazine 20 for accommodating a large number of fins 10, a fin moving mechanism 21 for holding only one fin 10 from the fin magazine 20 and moving the fin 10 downward, and a fin moving mechanism 21. And a fin stopper 22 for stopping the fin 10 to be moved at an intermediate position in the moving direction (downward) (FIGS. 11 and 12).
), A punch 24 that collides with the tip of the fin 10 stopped at the intermediate position and cooperates with the female mold 23 on the opposite side of the fin so as to make the tip of the fin 10 uneven, and finishes the uneven processing. Then, a large number of base plates 12 formed in parallel with each other at predetermined intervals with a large number of grooves 13 for press-fitting the uneven portions of the tips 11 of the fins 10 moved further downward by the fin moving mechanism 21 are orthogonal to the grooves 13. Groove 1 in the direction of
3, a base plate moving mechanism 25 for intermittently moving each one pitch p, and these are fixed on a base 30.

More specifically, the first frame 31 is fixed on the base 30.
A second frame 32 is fixed on the first frame 31 in an upright state. The base plate moving mechanism 25 is assembled inside the first frame 31, and the fin magazine 20, the fin moving mechanism 21, the punch 24, which can be moved forward and backward in the horizontal direction, and a pair with the second frame 32. The female die 23 and the fin stopper 22 are assembled.

The second frame 32 is mainly made of a flat plate having vertical ribs on both left and right sides, and an opening 32a is formed below the flat plate. The fin magazine 20 is mounted on the lower right side of the second frame 32 in FIG. This fin magazine 20
As shown in FIGS. 4 to 6, a large number of fins 10 are accommodated in a stacked state, and these fins 10 are opened by the fin pressing means 33 incorporated in the fin magazine 20 to form openings 32a. Direction. Here, the fin pressing means 33 is a pressing member 3 that presses the right side of the fin 10 in FIG.
3a, a guide bar 33b for guiding the pressing member 33a in the left-right direction in FIG. 4, and an air cylinder 33c for moving the pressing member 33a.

The fin moving mechanism 21 is mounted on the left side of the second frame 32 in FIG. The fin moving mechanism 21 includes a flat fin moving body 38 that can move in the vertical direction via guide rails 37 provided on the second frame 32, and two types of moving the fin moving body 38. Main cylinder 39 and auxiliary cylinder 4
0 and a suction mechanism 41 incorporated in the fin moving body 38 to suction-fix one fin to the fin moving body 38.

As shown in FIGS. 7 to 9, the fin moving body 38 is provided at a central main portion 38a and at a position slightly elevated from the main portion 38a.
And the guided portions 38b, 38b guided by the A recess 38c that can accommodate only one fin is formed at a position below the fin moving body 38 and facing the fin magazine 20 (see FIG. 9). This recess 3
The portion where 8c is formed is formed of a separate member 42 from the fin moving body 38 because the size of the recess 38c needs to be changed according to the size of the fin 10, and is fixed by a fixing means such as a bolt. It is detachably fixed to the fin moving body 38. The recess 38c is provided with a fin suction opening 43, and the opening 43 is connected to a negative pressure source (not shown) through the separate member 42 and the air passages 43a and 43b provided in the fin moving body 38. Thus, the suction mechanism 41 is configured.

As shown in FIGS. 2 and 3, the main cylinder 39 is mounted on the upper portion of the second frame 32 via a bracket 44, and a piston rod 39a extending from the main cylinder 39 is connected to a connecting member. The fin moving body 38 is connected to the fin moving body 38 through a line 45. When the fin moving body 38 is pressed downward by the main cylinder 39, the fin 10 is pressed into the groove 13 of the base plate 12.

The auxiliary cylinder 40 is mounted on the left and right of the second frame 32 at predetermined intervals via a bracket 46 via a bracket 46. A piston rod 40a extending from the auxiliary cylinder 40 is connected to an upper end of the fin moving body 38. And is not connected. That is, when the fin moving body 38 is pressed downward by the auxiliary cylinder 40, the fin 10 abuts on the fin stopper 22 that has been advanced forward in advance, and is stopped at that position. Thereafter, after the fin stopper 22 is retracted rearward, when the fin moving body 38 is further pressed downward by the main cylinder 39, the tip of the piston rod 40a is separated from the fin moving body 38.

As shown in FIGS. 10 to 12, the female mold is located at a position below the opening 32a of the second frame 32 and opposite to the fin 10 which is sucked by the fin moving body 38 under a negative pressure. The mold 23 is fixed. A large number of punches 24 are arranged horizontally at a predetermined interval in front of the female mold 23 (to the left in FIGS. 10 and 11) so as to face the female mold 23. The punches 24 are operated so as to advance toward or retract from the female mold 23 by air cylinders 47, 47 which are appropriately separated from each other. When the transfer operation is performed so as to advance to the 23 side, the tip of the fin 10 is processed to be uneven. That is, as shown in FIG. 1, one surface of the fin 10 is depressed to form a projection on the other surface of the fin 10.

Below the female mold 23, the fin stopper 22 is moved in the front-rear direction by an air cylinder 48 (FIG. 1).
0, left and right directions in FIG. 11). When the fin stopper 22 advances forward, as shown in FIG. 10 and FIG.
From one fin or a little less than that,
When it is stopped in a state of protruding forward, and when it retreats, it moves backward so as to be completely hidden from the female mold 23. That is, when the fin stopper 22 is in the advanced state, the fin 10 that is sucked by the fin moving body 38 and moved downward by the negative pressure is brought into contact with the fin stopper 22 so that the stop position is determined.

The tip of the fin stopper 22 is provided with irregularities corresponding to the pitch of the punch 24, and is positioned so that the tip of the punch 24 exactly matches the recess 22a of the fin stopper 22 (see FIG. 12). . Accordingly, even when the punch 24 protrudes toward the female mold 23 when the fin stopper 22 advances to the position where the fin 10 is stopped, the tip of the punch 24 does not interfere with the fin stopper 22 without abutting. It has become.

As shown in FIGS. 13 and 14, the base moving table 25 moves the base plate table 51 along the rails 50 provided on the lower portion of the first frame 31 in the left-right direction shown in FIG. A ball screw mechanism 52 is provided between the base plate table 51 and the first frame 31 so as to be movable, and the ball screw mechanism 52 is operated by a pulse motor 53, whereby the ball screw mechanism 52 is fixed on the base plate table 51. The base plate 12 is moved intermittently by one pitch of the groove 13.

When the base plate table 51 is stopped, the grooves 13 of the base plate 12 fixed on the base plate table 51, into which the fins 10 have not yet been pressed, are sucked and held by the fin moving body 38. It is set to be located directly below the fin 10. As a method of fixing the base plate 12 to the base plate table 51, a reference plate 51a at the right end of the base plate table 51 in FIG.
And pressing the side of the base plate 12 with the screw member 51b.

Next, the operation of the device for press-fitting the fin having the above structure into the base plate will be described. First, the required number of fins 10 are set in the fin magazine 20. The fin set may be performed manually or automatically by machine. And the fin 10 set in this way
Fin pressing means 33 using an air cylinder 33b.
As a result, the fin is moved toward the fin moving body 38 (see FIG. 4).

In parallel with the set of the fins 10, the base plate 12 is brought into contact with the base plate 12 at its tip against the reference surface 51a, and the opposite side of the base plate 12 is pressed against the reference surface 51a with the screw member 51b. It is set on the board table 51.

One of the fins 10 pressed leftward in FIG. 2 by the fin pressing means 33 is a recess 38c of the fin moving body 38 which is waiting in advance.
(See FIG. 9). At this time, the fin 10 is suctioned with a negative pressure by the fin suction opening 43, and
The state fitted in c is maintained. The fin 10 has a structure in which the fin moving body 38 is
When the fin 10 is pushed downward, the upper end of the fin 10 is pressed by the upper end engaging portion 38cc on the upper portion of the recess 38c while being fitted in the recess 38c, so that the fin 10 is integrally lowered with the fin moving body 38. I do.

The fins descending integrally with the fin moving body 38 come into contact with the fin stopper 22 which has been moved to the advanced position by the air cylinder 48 in advance, and positioning in the height direction is performed. Then, in this state, the fin moving body 3
8 stops. In this state, the air cylinder 47 is driven,
The plurality of punches 24 are advanced to the female mold 23 side. The tips of the punches 24 contact the lower part of the fin 10 at predetermined intervals, and the female mold 2 on the back side of the fin 10
In cooperation with 3, the tip of the fin 10 is made uneven. In other words, the tip of the fin 10 has one surface depressed at predetermined intervals and a projection formed on the other surface (see FIG. 1).

At this time, unevenness is provided at the tip of the fin stopper 22 corresponding to the pitch of the punches 24... And the tip of the punches 24 is positioned so as to match the recess 22 a of the fin stopper 22. (Fig. 1
2), even if the punch 24 moves forward, the tip of the punch 24 does not hit the fin stopper 22.

Next, the fin stopper 22 is retracted by the air cylinder 48 (to the left in FIGS. 10 and 11).
The engagement with the tip of the fin 10 is released. Then, the fin moving body 38 is further moved downward by the main cylinder 39. A base plate 12 fixed to the base plate table 51 is provided below the fin moving body 38. A groove 13 formed at the tip of the base plate 12 has a position directly below the fin moving body 38, specifically, the negative pressure suction to the fin moving body 38. The positioning is accurately performed by the pulse motor 53 and the ball screw mechanism 52 so that the fin 10 comes to a position directly below the fin 10. Therefore, the fin 10 descending integrally with the fin moving body 38
Is press-fitted into the foremost groove 13 of the base plate 12. The above is the step of press-fitting the fins 10 into the grooves 13 of the base plate 12.

Thereafter, after the negative pressure suction of the fins 10 by the suction mechanism 41 is released, the main cylinder 39 is driven to raise the fin moving body 38 to return to the initial position. At the same time, the pulse motor 53 is driven, and the base plate 12 together with the base plate table 51 is driven via the ball screw mechanism 52.
Is moved to the right in FIG. 2 by one pitch of the groove 13. Hereinafter, the above-described series of cycles is repeated, and the fins 10 are automatically pressed into the respective grooves 13 of the base plate 12. The movement of each component described above is controlled by a control unit (not shown) so that a completely automatic operation is performed. After the fin press-fitting, the fin press-fitting portion is brazed as necessary.

FIG. 16 shows a state in which the fin press-fitting portion is brazed. As described above, when the lower part of the fin 10 is pressed into the groove 13 of the base plate 12 after the concave and convex processing, the fillet F accumulates not only at the fin joint at the upper part of the groove but also at the concave and convex part at the lower end of the fin. As a result, a large fillet F can be obtained, and a strong fixing strength can be obtained. Further, since the mounting strength at the time of press-fitting the fin 10 is strong, it is not necessary to support the fin 10 using a dedicated jig at the time of brazing,
Brazing work becomes easy.

FIGS. 17A and 17B show a state in which the press-fitted portion is brazed, wherein FIG. 17A shows a state in which the concave and convex portion at the fin tip is accommodated in the groove 13, and FIG. This shows a state where the portion protrudes from the groove.
As shown in (a), the fin tip has a concave and convex portion
It is preferred that it completely fits within. This is because the brazed portion does not become large and is excellent in design.

The above-described embodiment is merely an example, and the design can be changed as needed unless the purpose of the invention is polarized. For example, in the embodiment of the method of the present invention, the convex portion is formed only on one side 10a of the fin as shown in FIG. 1. However, the present invention is not limited to this. For example, the convex portion may be alternately formed on one side 10a and the other side 10b. A part may be formed. In the embodiment of the present invention, the first frame 31
The fin magazines 20 are fixedly mounted on the fin magazines 20. However, the present invention is not limited to this.
May be selected according to the size of the first frame 31 and fixed to the first frame 31. Further, in the embodiment of the present invention, the suction mechanism 41 is used to take out and engage one fin 10 in the fin moving body 38, but when the fin is a magnetic material, the electromagnet is used. It may be engaged by utilizing.

[0040]

As described above, according to the present invention, the following excellent effects can be obtained. According to the first aspect of the present invention, each tip of a large number of fins is formed into a concave and convex shape, and the concave and convex portions are formed into a large number of grooves formed in the base plate in advance, and the base plate is formed in a direction perpendicular to the groove. This is a method in which the fins are sequentially press-fitted and fixed while being moved by one pitch. The deformation in the thickness direction of the fin can be performed with a much smaller load than in the case of processing a conventional base plate, so that processing is easy. . Further, since the press-fitting allowance can be freely set, the pull-out strength can be increased. Further, even when brazing is performed after press-fitting, a large fillet can be taken, so that a strong fixing strength can be obtained. According to the second aspect of the present invention, a fin magazine for accommodating a large number of fins, a fin moving mechanism for taking out only one fin from the fin magazine, and moving the fin moved by the fin moving mechanism in a moving direction A fin stopper that stops at an intermediate position of the fin, and a punch that abuts the tip of the fin stopped at the intermediate position from one side and cooperates with a female mold on the opposite side sandwiching the fin to process the tip of the fin. After the concave and convex processing is completed, a large number of base plates formed in parallel with each other at predetermined intervals with grooves for press-fitting the concave and convex processed portions at the tips of the fins further moved by the fin moving mechanism are orthogonal to the grooves. And a base plate moving mechanism for intermittently moving the grooves one pitch at a time in the direction in which the fins are formed. It is possible to implement a method of press-fitting the roughened portion of the the grooves of the base plate suitably. According to the third aspect of the present invention, the fin moving mechanism includes a reciprocating fin moving body made of a flat plate, and the fin moving body can receive only one fin at a position facing the fin magazine. Is formed, and an opening of a suction mechanism for sucking the fins under a negative pressure is provided in the recess, so that only one fin can be taken out from many fins without fail, and then the fins are subjected to uneven processing and press-fitting. Work can be performed smoothly. In addition, since the fin can be taken out and the fin can be moved by the same fin moving body, the number of components can be reduced, the configuration can be simplified, and the cost can be reduced. According to the fourth aspect of the present invention, since the fin moving body reciprocates in synchronization with the base plate feed of the base plate moving mechanism, it is easy to automate the operation of press-fitting a large number of fins into the grooves of the base plate. Can be planned. According to the invention described in claim 5,
The fin moving mechanism separately includes a first moving means for moving the fin to an intermediate position and a second moving means for moving the fin so as to press the fin into the groove of the base plate.
The fin moving force required for the moving means is completely different between the positioning, which is the premise of the fin unevenness processing by the moving means, and the press-fitting of the fins by the second moving mechanism. Therefore, both operations can be performed smoothly. According to the invention described in claim 6,
The fin stopper is arranged adjacent to the female mold, and the recess is formed in the fin stopper so as to avoid the punch. Therefore, the fin stopper is arranged close to the female mold without interfering with the punch. As a result, the accuracy of processing the fins can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the method of the present invention.

FIG. 2 is a front view showing an embodiment of the device of the present invention.

FIG. 3 is a side view showing the same embodiment.

FIG. 4 is a plan view of a fin magazine used in the embodiment.

FIG. 5 is a front view of a fin magazine used in the embodiment.

FIG. 6 is a left side view of the fin magazine used in the embodiment.

FIG. 7 is a side view of the fin moving body used in the embodiment.

FIG. 8 is a front view of a fin moving body used in the embodiment.

FIG. 9 is a sectional view of a main part of the fin moving body used in the embodiment.

FIG. 10 is a plan view showing a relationship among a punch, a female mold, and a fin stopper used in the embodiment.

FIG. 11 is a front view showing a relationship between a punch, a female mold, and a fin stopper used in the embodiment.

FIG. 12 is a perspective view showing a relationship between a punch, a female mold, and a fin stopper used in the embodiment.

FIG. 13 is a plan view of a base plate moving mechanism used in the embodiment.

FIG. 14 is a front view of a base plate moving mechanism used in the embodiment.

FIG. 15 is a cross-sectional view showing a state where fins are pressed into grooves of a base plate by the method of the present invention.

FIG. 16 is a cross-sectional view showing a state in which fins are press-fitted into grooves in a base plate and then press-fitted portions are brazed.

17A and 17B are views showing a state where the press-fitting portion is brazed, wherein FIG. 17A is a cross-sectional view showing a state where the concave and convex processed portion of the fin is fitted in the groove, and FIG. It is sectional drawing which shows a state.

FIG. 18 is a cross-sectional view showing a conventional method for press-fitting a fin into a base plate.

FIG. 19 is a cross-sectional view showing a state where a press-fit portion is brazed after press-fitting a fin into a base plate by a conventional press-fitting method.

[Explanation of symbols]

 Reference Signs List 10 fin 12 base plate 13 groove 20 fin magazine 21 fin moving mechanism 22 fin stopper 23 female mold 24 punch 25 base plate moving mechanism 33 fin pressing means 38 fin moving body 39 main cylinder (first moving means) 40 auxiliary cylinder (Second moving means) 41 Suction mechanism 51 Base plate table 52 Ball screw mechanism 53 Pulse motor

Claims (6)

[Claims] An end of each of a large number of fins is processed to be uneven, and the processed part is moved to a plurality of grooves formed in a base plate by one pitch of the grooves in a direction orthogonal to the grooves. A method of press-fitting fins into a base plate, wherein the fins are sequentially press-fitted and fixed. 2. A fin magazine for accommodating a large number of fins, a fin moving mechanism for taking out only one fin from the fin magazine and moving the fin, and stopping the fin moved by the fin moving mechanism at an intermediate position in the moving direction. A fin stopper, a punch that abuts the tip of the fin stopped at an intermediate position from one surface side, and cooperates with a female mold on the opposite side sandwiching the fin to process the tip of the fin. After finishing, a large number of base plates formed in parallel with each other at predetermined intervals with grooves for press-fitting the concave / convex processed portions of the tips of the fins further moved by the fin moving mechanism are formed in a direction perpendicular to the grooves. And a base plate moving mechanism for intermittently moving the fins one pitch at a time. 3. The fin moving mechanism includes a reciprocating fin moving body made of a flat plate, and a recess for accommodating only one fin is formed at a position of the fin moving body facing the fin magazine. 3. The device for press-fitting fins into a base plate according to claim 2, wherein an opening of a suction mechanism for sucking the fins under negative pressure is provided in the recess. 4. The apparatus for press-fitting fins into a base plate according to claim 3, wherein said fin moving body reciprocates in synchronization with a base plate feed of said base plate moving mechanism. 5. The fin moving mechanism separately includes a first moving means for moving the fin to an intermediate position and a second moving means for moving the fin so as to press-fit the groove into the base plate. The press-fitting device for a fin according to any one of claims 1 to 4, wherein the fin is inserted into a base plate. 6. The fin stopper according to claim 2, wherein the fin stopper is arranged adjacent to the female mold, and the fin stopper is formed with a recess so as to avoid the punch.
6. A device for press-fitting a fin into a base plate according to any one of the above items 5.