JP3275104B2 - Multi-section corrugated fin forming roll - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forming roll capable of simultaneously supplying a plurality of corrugated fins of an appropriate width by supplying one strip-shaped metal plate.

[0002]

2. Description of the Related Art Conventionally, in order to manufacture a corrugated fin by a forming roll, a long metal plate cut in advance to the width of the corrugated fin to be manufactured is supplied, and one corrugated fin is formed by one forming roll. I was making it.

[0003]

If a plurality of relatively small corrugated fins can be manufactured simultaneously with a pair of forming rolls, it goes without saying that productivity is dramatically improved. Therefore, the present invention employs the following configuration in order to solve such a problem.

[0004]

The forming roll of the present invention comprises:
A plurality of thin disk-shaped forming elements each having a forming tooth formed on the outer periphery are coaxially laminated to form a pair of forming rolls 1 and 2 that mesh with each other. By supplying the strip-shaped metal plate 3 between such a pair of forming rolls, in the forming roll for forming the corrugated fins 5, a plurality of stacked forming elements are arranged at appropriate intervals in the stacking direction in a plurality of element groups A. ＣC. Then, adjacent element groups are phase-shifted from each other in the circumferential direction, and a fin cut surface 4 is formed at a boundary between the element groups.

[0005]

Therefore, according to the forming roll of the present invention, a plurality of corrugated fins having an arbitrary width can be produced at the same time, depending on where the boundaries between the element groups are located.

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing an example of a corrugated fin manufactured by a main forming roll, and FIG. 2 is an enlarged view of a tooth portion of a pair of forming rolls 1 and 2 used for the forming. FIG. 3 is a schematic side view of the space between the elements A and B, FIG. 4 is a conceptual diagram of forming by a main forming roll, and FIG. 5 shows a cutting state of the corrugated fin 5 at the boundary between the element groups. FIG. 6 is a schematic cross-sectional view taken along line IV-IV in FIG. In the forming roll of this embodiment, as shown in FIG. 4, when the pair of forming rolls 1 and 2 are rotated in a meshing relationship with each other, the corrugated fin 5 is manufactured by supplying the strip-shaped metal plate 3 therebetween. Is what is done.

Each of the forming rolls 1 and 2 is shown in FIGS.
As shown in the figure, a number of thin disk-shaped forming elements L1 to L
37 and others and a laminate of U1 to U37 and others. As shown in FIG. 4, on the outer periphery of each forming element,
Numerous molded teeth are formed. The tip surfaces of the molded teeth include a flat surface such as L1 and L18 in FIG. 2 and a sawtooth-shaped surface such as L3 in FIG. What is formed in a saw blade shape is a portion for forming the louver 6 shown in FIGS. The louvers 6, except for the tops 7 and the valleys 8 of the corrugated fins 5, are cut and raised obliquely in parallel in the width direction between them. Each forming roll 1, 2
As shown in FIG. 3, each element group is divided into A to C in the stacking direction. In this embodiment, for example, an element group B located in the middle has a phase in the circumferential direction relative to the other element groups A and C. It is slightly advanced. This phase difference of about 1 mm is sufficient as an example.

As described above, by advancing the phase of the element group B as a whole, the fin cut surface 4 is formed at the boundary of each element group. Then, the phases of the respective element groups of the forming roll 2 are shifted in accordance with the forming roll 1. In this embodiment, the element group A shown in FIG.
Are L1 to L18, and the forming roll 2 meshing therewith
Are U1 to U18. Element group B is L19 ~
L36, and the element group of the forming roll 2 meshing with L36 is U19 to U36. And the element group C
Is not less than L37, and the element group of the forming roll 2 meshing therewith is also not less than U37. put it here,
The fin cut surface 4 is formed on the side end surface of L19 and the side end surface of U18. Similarly, the fin cut surface 4 is formed on the side end surfaces of L36 and U37. When one strip-shaped metal plate 3 is supplied to the pair of forming rolls 1 and 2 in such a state, a strip-shaped metal plate 3 is formed at the boundary between the element group A and the element group B due to the presence of the fin cut surface 4 as shown in FIG. Metal plate 3
Is disconnected. Thereby, in this embodiment, as shown in FIG. 1, three corrugated fins 5 are formed at the same time.

[0009]

According to the forming roll of the present invention, a plurality of element groups are divided at appropriate intervals in the laminating direction of a large number of elements, and adjacent element groups are phase-shifted in the circumferential direction with respect to each other. Since the fin cut surface 4 is formed at the boundary, a plurality of corrugated fins having an appropriate width can be simultaneously manufactured from a single band-shaped metal plate with a very simple configuration. As a result, mass productivity can be increased, and the conventional forming roll can be used as it is, which can contribute to a reduction in equipment costs. Moreover,
By adjusting the number of forming elements included in each element group, a corrugated fin having a desired width can be formed.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of manufacturing a plurality of corrugated fins 5 manufactured by a forming roll of the present invention.

FIG. 2 is a cross-sectional view of forming teeth on a pair of forming rolls 1 and 2.

FIG. 3 is a side view of an element group A and an element group B in the molded tooth.

FIG. 4 is a conceptual diagram of a corrugated fin 5 manufactured from a band-shaped metal plate 3 by a pair of forming rolls 1 and 2;

FIG. 5 shows a strip-shaped metal plate 3 at the boundary between the element groups.
Explanatory cross-section showing the cutting state of FIG.

FIG. 6 is a sectional view taken along line IV-IV in FIG. 1;

[Explanation of symbols]

 1, 2 forming rolls 3 strip-shaped metal plate 4 fin cut surface 5 corrugated fin 6 louver 7 top 8 valley

Continuation of the front page (56) References JP-A-50-49784 (JP, A) JP-A-52-49960 (JP, A) JP-A-56-36340 (JP, A) JP-A-61-20632 (JP) JP-A-2-89523 (JP, A) JP-A-4-262829 (JP, A) JP-A-4-12326 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB B21D 13/04 B21D 13/08 B21D 28/10-28/12 B21D 22/08 B21D 53/04

Claims (1)

(57) [Claims] 1. A plurality of thin disk-shaped forming elements (L1 to L37, U1 to U1) each having a forming tooth formed on the outer periphery.
37) are stacked on the same axis to form a pair of forming rolls 1 and 2 meshing with each other, and the forming metal rolls 3 are supplied between the pair of forming rolls to form the corrugated fins 5. And a plurality of element groups A at appropriate intervals in the laminating direction.
And C. A forming roll of a multi-row corrugated fin in which adjacent element groups are phase-shifted in the circumferential direction with respect to each other to form a fin cut surface 4 at a boundary between the element groups.