JPS5890334A - Manufacture of radiator fin - Google Patents

Abstract

PURPOSE:To manufacture radiator fins having different pitches according to draft by continuously forming a plate to corrugated form by gearlike forming rolls having constant pitch, and properly stretching necessary part of corrugation. CONSTITUTION:A corrugated plate 7a of a fixed pitch is obtained by continuously working a bandlike metallic plate 7 pulled out from a reel 6 to corrugated form between gearlike forming rolls 8, 9 and cutting to proper length by a cutter 10. Then, radiator fins 4 of different fin pitches are obtained by grasping the middle of the corrugated plate 7a by a fixing jig 11 and pulling an end by a stretcher 12. A radiator core having small ventilation resistance in the part where outside airflow is small by incorporating the fins 4 between washers 13, 14 and soldering them. Stretching process can be omitted by making the forming rolls gearlike form having specified pitch circumference length and different pitch.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing radiator fins with varying fin pitch.

For the fugiator core of conventional vehicle radiators.

is equipped with constant pitch O radiator fins,
Particularly in cab-over type vehicles, there are parts where the amount of outside air introduced into the radiator core is small, resulting in poor heat dissipation in those parts, making it impossible to obtain a sufficient cooling effect. .

It is believed that the above interlayer point can be achieved by increasing the fin pitch in the area where the amount of outside air introduced into the fugiator core is small and making the ventilation paper resistance in that area easier.

Therefore, the present invention provides a method for manufacturing radiator fins with different fin pitches, thereby making it possible to provide a vehicle radiator with high cooling efficiency in areas where the air volume of introduced outside air is small (D74 pitch) is large. With the goal.

This purpose is to produce bales made by continuously processing plate material into a corrugated shape by forming the plate material into a substantially gear-like shape with a constant pitch.
A method for manufacturing a radiator fin, which is characterized by cutting the sheet material, and then stretching the required section of the plate material using a stretching machine to change the pitch of that section, and which is achieved by the method, A plate material is continuously processed into a wave shape between substantially gear-shaped forming rolls having a circumferential length and a pitch. This is achieved by a method for manufacturing radiator fins.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

111E shows an example in which the radiator fin manufactured according to the invention of 1111 is applied to a vehicle radiator.

Here, the tank 1 and the lower tank 21 are communicated via several tubes 3, and radiator fins 4 having a fin pitch are soldered to the outer wall of the tubes 3. The tube 3 constitutes a radiator core. 1 Tank IK is provided with a cooling water inlet 5, and upper tank 1 and lower tank 2 are provided with piping connections (not shown) for circulating cooling water. In the case of this vehicle radiator, Since the fin pitch of the upper part of the sides of the radiator core is larger than that of the lower part, the ventilation resistance of the upper part is smaller than that of the lower part. Therefore, sufficient heating effect can be obtained even if less outside air is introduced into the upper part of the Fujiator core.

1I2 and 3 show the manufacturing process of the radiator fin 40, in which the band-shaped metal plate 7 pulled out from the reel 6 is rolled into a T& shape roll 8 in the form of a gear wheel with a constant pitch.
The sheet is continuously processed into a corrugated plate with a cutter 10, and then cut into appropriate lengths with a cutter 10 to form a corrugated sheet 7 with a constant pitch.

Thereafter, as shown in FIG. 3, the middle of the corrugated plate 7m is grasped with the fixing tool 11, one end of the corrugated plate 7m0 is pulled by the stretching machine 12, and the fixing jig 11 is stretched. Machine 12
and lengthen the section between O and O. As a result, the radiator fin 4 with increased eye and pitch in that section has a positive result. The range of the fin pitch of the completed radiator fins 4 is usually about 1.8 to 2.1.

The completed radiator fins 4 are stacked alternately with the tubes 3 and assembled on the seat plates 13 and 14, as shown in FIG. In addition, the height of the radiator fin 4 in the part with a large fin pitch is slightly lower due to the fin pitch, but when it is assembled to the seat plate 13, 14, it should be Since an appropriate compressive force is applied, there is no gap between the tip 3 and the radiator fin 4.

The radiator fins 4 and chews 3 assembled on the seat plates 13 and 14 are attached to a baking jig 15 shown in FIG. 5, and the baking process is carried out. In this case, the tube 310mMt
During the process, the solder applied to the surface of the tube 30 melts and the tube 3 and the radiator fin 4 are soldered together.

After baking, attach the tanks to the seat plates 13 and 14 to complete the vehicle radiator.

As explained above, the invention of III t is characterized in that the required section of a plate material that has been continuously processed and cut into a wavy shape with a constant pitch is stretched using a stretching machine. In addition, it has become possible to manufacture radiator fins of various lengths without having to change the fin pitch. Since the roll is used, it has the advantage that the existing approximately gear-shaped forming roll can be used as is.

FIGS. 6 to 8 show an embodiment of the second invention, in which the distance between approximately gear-shaped forming rolls 15° and 16 having a predetermined pitch circumferential length and different pitches is shown in FIGS. , the plate material 18 from the reel 17 is continuously processed into a corrugated shape.
%The plate material 18 is formed into a substantially gear shape a by the cutter 19.
-1k It is cut to a length corresponding to the pitch circumference of 15.16, and a radiator in-line 4 with a fin pitch of 5 different as shown in No. 5W7A is completed. Here, the fin pitch of the radiator fins 4 gradually increases from the center, but it can be changed to any desired fin pitch by changing the substantially gear-shaped forming row 115.160Ill shape.

Here, since the approximately gear-shaped forming rows #15 and #16 have different pitches, their diameters are not constant. For this reason, as shown in FIG. III7, the approximately gear-shaped forming roll 1
One of the support shafts 20 of 5 and 16 is fixed support shaft 21 of the other.
However, it is movable, thereby making it possible to change the distance between the axes of the double-way gear-shaped forming rolls 15 and 16. In addition, a pressure adjustment device n using spring force is provided for the support shaft application, and this pressure adjustment device 22 allows both gear-shaped molding p-rules 15, 1
The radiator fins 6 are always engaged at a desired pressure degree, and the engagement can be corrected for different pitches.The radiator fins 4 manufactured by the above method are the radiator fins manufactured by the first invention It is assembled to the seat plate of a vehicle radiator in the same manner as above. According to the second invention, the "drawing" step can be omitted, so radiator fins can be manufactured in a short time.
Furthermore, since a drawing machine is not required, the apparatus can be simplified.

In addition to the above-mentioned method, the method for manufacturing the vehicle radiator shown in the first WJ includes separately manufacturing radiator fins with a small fin pitch and radiator fins with a large fin pitch, and aligning them in the longitudinal direction Kll. - It may also be arranged at the entrance. The G1 strip C) material may have a fixed width or may have a width that gradually changes.

As is clear from the above explanation, the invention of 111 and
According to the invention, it is possible to easily manufacture radiator fins with different fin pitches, so it is easy to manufacture a vehicle radiator that increases the cooling efficiency by increasing the fin pitch for tin, which has a small amount of outside air. It will be possible to produce it.

[Brief explanation of the drawing]

JIIIWJ is a perspective view showing an example in which the radiator fin manufactured by the manufacturing method according to the present invention is applied to a radiator for a vehicle. Figures 112 and 3 are schematic front views of the manufacturing apparatus showing the middle of the process of an embodiment of the tenth invention, respectively. Fig. 4 is a front view showing the process of assembling the completed radiator fin, Fig. IIs is a perspective view showing the process of baking the radiator fin and chip, and Fig. 6wA is a front view showing the process of assembling the completed radiator fin. Figure 117 is a schematic front view of the manufacturing equipment showing the middle of the process of one embodiment. iI
I figure 0 4...Radiator fin, 7.18...Plate material, 8,
9.15.16--Gear shaped molded rail, 12...
Drawing machine〇Figures 1-2 Figure 2Figure 3Figure 4Figure 5

Claims (1)

[Claims] (1) After the plate material is continuously processed into a corrugated shape between the gear-shaped molded rails with a constant pitch, the plate material is cut to the desired length, and then the required section of the plate material is stretched using a stretching machine. A radiator fin OML that manufactures the 74-inch Fujini-74 by changing the pitch of the 74-inch! Method. Q) After continuous processing of the plate material into a corrugated shape with a four-wheel gear-shaped forming wheel with a predetermined pitch circumference length and pitch rise, 1
A method for manufacturing a fugiator fin, in which a radiator fin with a high fin pitch is manufactured by cutting the plate material into a length corresponding to the pitch circumference of the approximately gear-shaped T&-shaped roll.