JPH0623581A - Composite parts and manufacturing method and device therefor - Google Patents

Abstract

PURPOSE:To prevent the degradation or the melting-out of a soft material by completely enclosing the soft material between two metal layers. CONSTITUTION:In the case of a solder washer, an external periphery and an internal periphery 16a, 16b of one side solder layer (metal layer) are respectively elongated to an external periphery and an internal periphery 14a, 14b of the other solder layer 14, and an external. periphery and an internal periphery 12a, 12b of a flux (soft material) between both solder layers 14, 16 are enclosed. Therefore, the flux 12 can be completely enclosed between both solder layers 14, 16. As a result, the flux 12 can be prevented from degradation by oxidation due to contact with an air or from melting out to the outer side. Further, with this composition, the preparation of another closing member is not required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved method and an apparatus for punching a composite material in which two metal layers are laminated with a soft material sandwiched therebetween, and a composite part manufactured by the improved method.

[0002]

2. Description of the Related Art There are various composite parts formed by laminating a soft material between two metal layers. A so-called solder washer is shown in a perspective view of FIG. 5 and a sectional view of FIG. As shown, two solder layers (metal layers) 14, 1
It is formed by punching out a composite material formed by sandwiching a flux (soft material) 12 between 6 and is a typical composite part formed by laminating two metal layers sandwiching the soft material. It is a thing. As shown in FIG. 5, this solder washer has a through hole 18 through which a lead wire or the like is passed in the center thereof. When soldering an electronic component on a printed circuit board using the solder washer, The lead wire of the electronic component is heated while being passed through the through hole 18, so that the soldering work can be simplified.

In such a solder washer, a connecting portion 15 for unifying the upper and lower two solder layers 14, 16 is provided so as not to be decomposed. This connecting portion 15 is composed of two solder layers 14 and 16
And the solder layer 1 above and below which the flux 12 is sandwiched by the presence of the connecting portion 15.
The situation in which the four are displaced from each other or disassembled is prevented.

The solder washer having the above structure is shown in FIG.
The composite material 20 as shown in FIG. 1 is formed by punching into a donut disc shape. Here, FIG. 7 (B)
The composite material 20 shown in is formed by pressing a thread solder as shown in FIG. 7 (A) into a band shape. That is, in the thread solder shown in FIG. 7A, the flux 11 for improving the adhesiveness of the solder to the substrate exists inside the solder 13. When such a thread solder is pressed into a strip shape, the flux 11 extends laterally to form the flux layer 12,
The solder 13 extends laterally to form the solder layers 14 and 16 above and below the flux layer 12. Since the solder 13 is annularly arranged around the flux 11, the connecting portion 15 is formed at the end of the strip-shaped composite material 20 by the above press. Then, such a strip-shaped composite material 20 is punched out in a donut disc shape so as to include the connection portion 15 at the end portion, whereby a solder washer as shown in FIG. 5 is formed.

Here, the solder washer as described above is
It is formed using a manufacturing apparatus as shown in FIG.

The solder washer manufacturing apparatus shown in FIG. 8 includes a punch 22 for punching a composite material 20, and a punch 2 for punching the punch 22.
The die 24 has a punching hole 24a corresponding to the number 2. In such a solder washer manufacturing apparatus, the composite material 20 is placed on the die 24, the punch 22 is moved from above, and the punch 22 and the punched composite material 20 are fitted into the punching hole 24a. It will be. At this time, the composite material 20 is punched by the punch 22 and the die 24. Here, the punch 22 has an annular shape corresponding to the shape of the solder washer to be punched, and the punch hole 2 of the die 24 is used.
The shape of 4a is also formed in an annular shape corresponding to the shape of the punch 22.

[0007]

In the conventional solder washer manufactured as described above, both solder layers 14 and 16 of the outer edge 12a of the flux 12 sandwiched between the two solder layers 14 and 16 are provided. Most of the inner edge 12b except the connecting portion 15 for connecting
It was exposed. Therefore, in the conventional solder washer, the exposed portion of the flux 12 is deteriorated due to contact with air, or the flux 12 is changed due to an increase in temperature.
There was a problem that melted and flowed out.

If the flux 12 is deteriorated, the adhesiveness with the substrate deteriorates when the solder washer is used,
It will not be able to exert sufficient functions. On the other hand, when the flux 12 is melted out due to the rise in temperature, when a large number of solder washers are stacked and stored in a dedicated cartridge, the solder washers adhere to each other, or the solder washers adhere to the inner wall of the cartridge. As a result, the solder washers cannot be automatically supplied one by one from the cartridge to a predetermined position such as a printed circuit board, which hinders a smooth flow of work.

In order to prevent such alteration and melting of the flux 12, conventionally, the solder washer is manufactured by filling the cartridge containing the solder washer with nitrogen or by the temperature inside the vehicle carrying the cartridge. Also, the temperature inside the factory to be used must be kept below a certain temperature, which is very difficult to handle and at the same time extra cost is required.

The present invention has been made in order to solve the problems in the conventional composite parts as described above, and is formed by sandwiching a soft material between metal layers and preventing deterioration or melting of the soft material. It is an object of the present invention to provide a composite part having the same and a manufacturing method and a manufacturing apparatus capable of easily manufacturing the composite part.

[0011]

In order to achieve the above object, in a composite part according to the present invention, an edge of one metal layer is drawn toward an edge of the other metal layer to soften the metal layers. It is a composite part that covers the edges of the material and encloses the soft material between both metal layers.

Further, in the method of manufacturing a composite part according to the present invention, when punching out the composite material, the punched edge of one metal layer is
It is characterized in that it is stretched in the punching direction so as to cover the edges of the soft material between both metal layers.

The manufacturing apparatus for stretching the punched edge of the metal layer in the punching direction is a manufacturing apparatus for punching a composite material in which two metal layers are laminated with a soft material sandwiched therebetween, A punch having a shape of a part for punching out the composite material, and a die having a punching hole corresponding to the punch and having the composite material mounted thereon are formed, and the punch and the punching hole form the composite material. In the manufacturing apparatus for punching, the end of the punch or the end of the punched hole is rounded.

[0014]

In the composite component having the above structure, the edges of the soft material between both metal layers are covered, so that the soft material is in a state of being enclosed between both metal layers.

Further, according to the above manufacturing method, the composite part is punched while the soft material edge is covered by the punched edge of the one stretched metal layer.

Further, in the above manufacturing apparatus, the end of the punch or the end of the punched hole is rounded. As a result, the rounded end portion at the time of punching is cut by pulling the metal layer for a while and then tearing it off, without rapidly cutting the metal layer having large malleability and ductility. On the other hand, even if the edges are rounded,
Soft materials with low ductility are quickly cut during punching. At this time, the punched composite material will fit into the punched hole together with the punch, so that the torn metal layer forms a film covering the side surface of the soft material due to the presence of the wall of the punched hole. Then, the soft material is confined by this film, the contact with the air is shielded, and the melted soft material is prevented from flowing out.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings of the embodiment, the same components as those in the conventional example shown in FIGS. 6 and 4 are designated by the same reference numerals and the description thereof will be omitted.

First, the composite part according to the present invention will be described.

FIG. 1 is a perspective view showing a composite part according to a preferred embodiment of the present invention, and FIG. 2 is a sectional view showing the composite part according to a preferred embodiment of the present invention, taking a solder washer as an example. It is a thing.

The features of the solder washer according to this embodiment are as follows.
One solder layer (metal layer), the outer edge and the inner edge 16a, 16b of the lower solder layer 16 are respectively connected to the other solder layer 1
The outer edge 12a and the inner edge 12b of the flux (soft material) 12 between the solder layers 14 and 16 are extended toward the outer edges and the inner edges 14a and 14b of the No. 4 wire.

Thus, the outer edge 12 of the flux 12 is
By covering the a and the inner edge 12b with the stretched solder layer, the flux 12 is enclosed between the solder layers 14 and 16. Therefore, it is possible to prevent a situation in which the flux 12 is oxidized and deteriorated due to contact with air, or is melted to the outside. Furthermore, as a result, it is no longer necessary to fill the cartridge containing the solder washer with nitrogen, maintain the temperature inside the vehicle that carries the cartridge, or in the factory that manufactures and uses the solder washer below a certain temperature, as in the past. It becomes very easy to handle, and at the same time you can save extra cost. Moreover, in the solder washer having the above configuration, the outer edge of the solder layer 16 on one side,
Since the inner edges 16a and 16b are extended to cover the outer edge 12a and the inner edge 12b of the flux 12, it is not necessary to prepare separate coating members. Further, in the solder washer according to the present embodiment, the punching location is not limited, and for example, as shown in FIG. It becomes possible to punch and obtain a solder washer. As a result, the punching work can be performed in consideration of the convenience of recycling the punched composite material 20.

FIGS. 4 (A) and 4 (B) show the main part of the above-described solder washer manufacturing apparatus and its operation. Here, a specific method for manufacturing the above-mentioned solder washer will be described below with reference to FIGS. 4 (A) and 4 (B).

This manufacturing apparatus manufactures a solder washer by punching a strip-shaped composite material 20 using a punch 22 and a die 24, which is a characteristic of the solder washer manufacturing apparatus according to this embodiment. That is, the punched hole 24a provided in the die 24 is rounded at the edge portion 24b. In such a manufacturing apparatus, each layer of the composite material 20 is punched by the punch 22 and the rounded edge portion 24b.
In this case, since the edge portion 24b is rounded, the lower solder layer 16 is stretched and then torn off rather than cut quickly because of its large malleability and ductility. The solder layer 16 stretched at this time has the outer edge 12 a and the inner edge 12 b of the flux 12.
Will form a film that covers.

In the solder washer manufacturing apparatus according to this embodiment, first, as shown in FIG. 4 (A), the flux is placed on the die 24 having the rounded edges 24b of the punched holes 24a. A band-shaped composite material 20 formed by pressing 12-thread solder is placed. And FIG.
As shown in (B), when punching the composite material 20 with the punch 22 in this state, the outer edge 16a and the inner edge 16b, which are the punched edges of the lower solder layer 16, are not immediately cut. , The die 24 is drawn upward along the punching direction so as to be dragged into the hole 24a along the rounded edge portion 24b of the punching hole 24a. The stretched solder layer 16 becomes a film due to the clearance between the punch 22 and the punching hole 24a of the die 24, and the outer edge 1 of the flux 12 sandwiched between the solder layers 14 and 16 is formed.
2a and the inner edge 12b will be covered. The stretched solder layer 16 will be torn off when stretched when punching.

As a result, the solder washer punched and formed by the solder washer manufacturing apparatus of this embodiment is
Like the solder washer shown in FIGS. 1 and 2, the outer edge 12a and the inner edge 12b of the flux 12 are covered with the outer edge 16a and the inner edge 16b of the extended lower solder layer 16, respectively. Therefore, the flux 12 is enclosed by the film formed by the stretched solder layer 16, the contact with the air is shielded, and the melted soft material is prevented from flowing out. The outer edge 12a and the inner edge 1 of the flux 12 may be removed depending on the torn portion.
Not only 2b but also the outer edge 14a and the inner edge 14b of the upper solder layer 14 may be coated.

According to the manufacturing apparatus of this embodiment, the composite part having excellent features such as the above-mentioned solder washer can be easily punched, for example, the die 24 is punched in the above specific example. Edge portion 2 of hole 24a
It can be easily manufactured only by rounding 4b. Further, when the solder washer (composite component having a predetermined shape) is punched out from the composite material 20 according to the manufacturing method of the present embodiment, the punching edge of one solder layer (metal layer) is changed to both solder layers (metal layer). According to the manufacturing method of forming the film covering the edges of the flux 12 (soft material) by stretching in the punching direction so as to cover the edges of the flux 12 (soft material) between them, a separate coating member is prepared. It is possible to easily manufacture the solder washer according to the present embodiment without the need.

In this embodiment, the punched hole 24a provided in the die 24 is rounded at the edge 24b so that the punched edge of the lower solder layer 16 is extended. However, unlike this, it is possible to obtain the same effect as that of this embodiment by rounding the edge portion of the punch 22 and extending the punched edge of the upper solder layer 14.

Further, in the present embodiment, the solder washer is shown as a specific example as a composite part formed by punching a composite material in which two metal layers are laminated with a soft material sandwiched therebetween. The invention is not limited to this, and can be applied to any composite component as long as it is a composite component as described above, such as a soundproof and heat insulating composite component formed by sandwiching a heat insulating material between metal plates.

[0029]

As described above, in the composite part according to the present invention, since the soft material is completely enclosed between the two metal layers, alteration or melting of the soft material is prevented, and as a result, it is very easy to handle. At the same time, it is possible to save extra costs.

Further, according to the method and apparatus for manufacturing a composite part according to the present invention, a composite part having excellent characteristics in which the above-mentioned soft material is completely enclosed between both metal layers can be easily punched. Can be manufactured.

[Brief description of drawings]

FIG. 1 is a perspective view of a solder washer which is a composite component according to a preferred embodiment of the present invention.

FIG. 2 is a sectional view of a solder washer which is a composite component according to a preferred embodiment of the present invention.

FIG. 3 is a diagram for explaining punching points when punching a solder washer according to the present embodiment from a composite material.

4A and 4B are views for explaining a solder washer manufacturing apparatus and manufacturing method according to this embodiment.

FIG. 5 is a perspective view of a conventional solder washer.

FIG. 6 is a cross-sectional view of a conventional solder washer.

FIG. 7 is a diagram showing a composite material as a raw material for manufacturing a solder washer.

FIG. 8 is a diagram illustrating a manufacturing apparatus and a manufacturing method of a conventional solder washer.

[Explanation of symbols]

 12 flux (soft material) 12a outer edge of flux 12b inner edge of flux 14,16 solder layer (metal layer) 14a, 16a outer edge of solder layer 14b, 16b inner edge of solder layer 20 composite material 22 punch 24 die 24a punching hole 24b edge portion

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B21D 28/14 B 7425-4E B23K 35/40 340 C 7362-4E (72) Inventor Katsushika Hatakeyama Uchida Industry Co., Ltd. 2-6-2 Higashitabata, Kita-ku, Tokyo

Claims (3)

[Claims] 1. A composite part formed by punching out a composite material in which two metal layers are laminated with a soft material sandwiched therebetween, wherein an edge of one metal layer is drawn toward an edge of the other metal layer, A composite part characterized by covering the edges of a soft material between both metal layers. 2. A method for producing a composite part having a predetermined shape by punching a composite material in which two metal layers are laminated with a soft material sandwiched between them. When punching the composite material, one metal layer is punched out. A method of manufacturing a composite part, which comprises stretching the edge in the punching direction so as to cover the edge of the soft material between the metal layers, and manufacturing the composite part. 3. A manufacturing apparatus for punching a composite material in which two metal layers are laminated with a soft material sandwiched therebetween, the punch being configured in the shape of a composite part to be formed, and punching the composite material. And a die on which the composite material is placed, the punching hole corresponding to the punching hole is provided, and the punch and the punching hole punch the composite material, the end portion of the punch or the punching hole. Manufacturing equipment, characterized in that the edges of the are rounded.