JP6804804B2 - Metal plate assembly and metal plate assembly manufacturing method - Google Patents

Description

The present invention relates to a metal plate aggregate in which a plurality of metal plates having the same shape are arranged on top of each other with a gap, and a method for manufacturing the metal plate aggregate .

The pressed product may be used for a plurality of metal plates of the same shape arranged with a gap. For example, there is known a cooling device in which a fluid (for example, water or the like) is allowed to flow in a gap between metal plates of such a metal plate assembly to cool an electronic component or the like through a plurality of metal plates. The metal plate in the cooling device can have various shapes so that it can be efficiently cooled by a fluid. For example, in Patent Document 1, a plurality of holes are formed in a metal plate of a metal plate aggregate. Further, as shown in FIG. 6, the metal plate of the metal plate assembly is made to have a wavy portion, and the contact area with the fluid is increased in the wavy shape, so that cooling can be performed efficiently. In FIG. 6, the metal plate assembly is indicated by reference numeral 110, the metal plate is indicated by reference numeral 101, and the wave portion is indicated by reference numeral 104.

In such a metal plate assembly, in order to keep the gap between the metal plates accurately and constant, generally, after arranging each metal plate one by one on a jig for manufacturing the metal plate assembly, a rod or the like is used. The fixing member is fixed to each metal plate by welding or caulking. On the other hand, in the case of a device that does not use a manufacturing jig, for example, in Patent Document 2, a vibration damping device in which protrusions for accurately maintaining gaps between metal plates are formed on a plurality of metal plates constituting a metal plate aggregate. Is disclosed. Here, as shown in FIG. 7, a metal plate set in which a recess having a diameter larger than that of the protrusion and a shallow depth is formed on the surface opposite to the surface on which the columnar protrusion of the metal plate is formed. Examples of the body are also disclosed. In FIG. 7, the metal plate assembly is indicated by reference numeral 210, the metal plate is indicated by reference numeral 201, the protrusion is indicated by reference numeral 202, and the recess is indicated by reference numeral 206.

Japanese Unexamined Patent Publication No. 2004-270970 Japanese Unexamined Patent Publication No. 2003-4093

When the protrusions are formed on the metal plate as disclosed in Patent Document 2, manual work such as the arrangement of each metal plate in the manufacturing jig is not required, and the accuracy of the gap can be better maintained.

For the columnar protrusions as shown in FIG. 7, a die having a die hole corresponding to the protrusions is brought into contact with the surface on which the protrusions are formed by using a die and a punch of a press working machine. It can be formed by pressing a punch against the opposite surface and denting it by approximately the same integral as the protrusion to form a recess, and plastically flowing the metal material through the protrusion. The gap between the metal plates is the length obtained by subtracting the depth of the recess at the position of the protrusion (the position in the surface direction of the metal plate) from the height of the protrusion.

However, in a metal plate having a wavy portion as shown in FIG. 6, the area of the flat portion capable of forming the recess as shown in FIG. 7 is small, and it is difficult to increase the gap between the metal plates.

The present invention has been made in view of the circumstances of its purpose, there is a metal plate having the same shape Ru are plurality disposed to overlap a gap, the area of the flat portion of the metal plate small but is to provide the required metal plate assembly clearance Ru secured and the metal plate assembly manufacturing method.

To achieve the above object, the metal plate assembly according to claim 1, the projection to secure the projecting the gap in terms of hand is formed on the flat portion, the projection is a central recess in the end face forming On the surface opposite to the surface on which the protrusions are formed , metal plates of the same shape of the pressed product having recesses having a diameter smaller than the protrusions are overlapped with a gap. The peripheral portion of the end surface of the protrusion of the pressed product is in contact with a portion of the opposite surface of the adjacent other pressed product in which the recess is not formed. ..

Metal plate assembly according to claim 2 is the metal plate assembly according to claim 1, the height of the protrusions, and greater than the thickness of the flat portion.

Metal plate assembly according to claim 3 is the metal plate assembly according to claim 1 or 2, the inner circumferential surface of the central recess is characterized in that it has an inclined surface.

Metal plate assembly according to claim 4 is the metal plate assembly according to claim 3, the inner circumferential surface of the central recess is that it has a plurality of different inclined surface inclination angle It is a feature.

The metal plate assembly according to claim 5 has an opening recess having a diameter larger than that of the protrusion formed on the opening side of the recess in the metal plate assembly according to any one of claims 1 to 4. It is characterized by being done.

Metal board assembly manufacturing method according to claim 6 is a metal plate assembly manufacturing method for manufacturing a metal plate assembly according to any one of claims 1 to 5, wherein said stampings The die is provided with a die hole in which the shape of the outer peripheral surface of the protrusion is the shape of the inner peripheral surface, and a knockout having the shape of the inner peripheral surface and the bottom surface of the central recess is provided inside the die hole. The protrusion is formed by bringing a metal plate into contact with the metal plate, pressing a punch having the shape of the inner peripheral surface and the bottom surface of the recess, and plastically flowing the metal through the protrusion.

According to the metal plate assembly and the metal plate assembly manufacturing method according to the present invention, even with a small area of the flat portion of the metallic plate, the required clearance is Ru secured.

A pressed product of a metal plate assembly according to an embodiment of the present invention is shown, in which (a) is a plan view, (b) is a side view, and (c) is a bottom view. It is a side view which shows the metal plate assembly of the same above. It is sectional drawing which enlarges and shows the protrusion of the press-processed product of the said metal plate assembly and its periphery. It is a side view sectional view which shows the state of formation of the protrusion of the press-processed product of the metal plate assembly of the same above, and shows before the formation of the protrusion. It is a side view sectional view which shows the state of formation of the protrusion of the press-processed product of the said metal plate assembly, and shows after the formation of the protrusion. It is sectional drawing which enlarges and shows the protrusion of the modified example of the pressed product of the metal plate assembly of the above, and the periphery thereof. It is a side view which shows the example of the conventional metal plate assembly. It is a side view sectional view which shows another example of the conventional metal plate assembly.

Embodiments of the present invention will be described below. In the pressed product 1 of the metal plate assembly 10 according to the embodiment of the present invention, as shown in FIGS. 1A to 1C, a protrusion 2 protruding from one of the surfaces 1a is formed on the flat portion 3. It is a metal plate. In the present embodiment, the pressed product 1 has a wavy portion 4, and the flat portions 3 are provided at both ends of the corrugated portion 4 (in the figure, the left and right ends of the corrugated portion 4). There is. In the case of the one indicated by reference numeral 5 in the drawing, fixing members (not shown) such as rods are arranged orthogonally (orthogonally to one surface 1a and the other surface 1b described later) and welded or It is a hole for fixing by caulking or the like.

As shown in FIG. 2, the pressed product 1 is used for a metal plate of a metal plate assembly 10 in which a plurality of metal plates having the same shape are arranged on top of each other with a gap G. The protrusion 2 is for securing a required gap G, and the gap G can be kept constant only by stacking a plurality of pressed products 1.

The protrusion 2 is substantially columnar. Further, as shown in FIG. 3, the protrusion 2 has a central recess 20a formed on the end surface 20. Further, a recess 6 is formed on the surface (the other surface) 1b on the opposite side of one surface (the surface on which the protrusion 2 is formed) 1a. The recess 6 is formed concentrically with the protrusion 2. The diameter D _{6 of the} recess 6 is smaller than the diameter D _{2 of the} protrusion 2. Note that FIG. 3 is a cross-sectional view cut along a surface including the central axis of the protrusion 2.

Here, the press working when forming the protrusion 2 will be described. In this press working, a die 7 and a punch 8 as shown in FIG. 4A are used. The die 7 is provided with a die hole 7a in which the shape of the outer peripheral surface of the protrusion 2 is the shape of the inner peripheral surface, and a knockout having the shape of the inner peripheral surface 20aa of the central recess 20a and the bottom surface inside the die hole 7a. 7b is provided. The punch 8 has the shape of the inner peripheral surface 6a and the bottom surface of the recess 6. The metal plate, which is the pressed product 1, is placed in contact with the die 7, the punch 8 is pressed against the position where the recess 6 is formed, and as shown in FIG. 4B, the metal material plastically flows to the protrusion 2. .. Then, the metal material corresponding to the volume of the recess 6 is plastically flowed to the protrusion 2, so that the protrusion 2 is formed. The knockout 7b is coupled to the main body of the die 7 via a spring body so that the punch 8 can move a little when the punch 8 is pressed against the pressed product 1.

In this way, the protrusions 2 with high accuracy can be formed by one press working, and metal chips and scraps are not generated.

Since the central recess 20a is formed in the protrusion 2, the metal material plastically flows to the height of the central recess 20a and then plastically flows to the peripheral edge 20b of the end face 20 to form the protrusion 2. Therefore, smaller than the diameter D ₂ diameter D ₆ of the projection 2 of the recesses 6, i.e. even with a small volume of the recess 6, (in particular, the height of the peripheral portion 20b of the end surface 20 of the projection 2) Height H _A high (large) protrusion 2 can be formed. The height H ₂ of the protrusion 2 can be made larger than the thickness T ₃ of the flat portion 3.

In the metal plate assembly 10, the peripheral edge portion 20b of the end surface 20 of the protrusion 2 of the pressed product 1 is a portion where the recess 6 of the other surface 1b of the flat portion 3 of the other adjacent pressed product 1 is not formed. In contact with. Accordingly, the height _{H 2} of the projections 2, the distance _{L G} of the gap G of stampings 1.

Due to the structure of the protrusion 2 and the recess 6, the required gap G can be secured even if the area of the flat portion 3 of the metal plate (pressed product 1) is small.

The inner peripheral surface 20aa of the central recess 20a preferably has an inclined surface whose diameter increases as it approaches the peripheral edge 20b. By doing so, the strength of the protrusion 2 can be increased, and the metal flow can be made smooth when the protrusion 2 is formed so that defects and the like are less likely to occur.

Further, the inner peripheral surface 20aa of the central recess 20a has a plurality of inclined surfaces having different inclination angles so as to comprehensively improve the strength of the protrusion 2 and the flow of metal at the time of forming the protrusion 2 (FIG. It is also possible to have an inner peripheral surface 20aa) of 5.

Further, as shown in FIG. 5, an opening recess 9 can be formed on the opening side of the recess 6. The opening recess 9 is formed concentrically and continuously with the recess 6. The diameter of the opening recess 9 is slightly larger than the diameter D _{2 of the} protrusion 2. Then, in the metal plate assembly 10, the peripheral edge portion 20b of the end surface 20 of the protrusion 2 of the adjacent other pressed product 1 is a step between the inner peripheral surface of the opening recess 9 and the inner peripheral surface 6a of the recess 6. By allowing the pressed product 1 to be placed in contact with the portion 9a, it is possible to prevent the other pressed product 1 from shifting in the direction of the other surface 1b (direction along the other surface 1b). it can. In this case, when forming the press-processed protrusion 2, the punch 8 has a shape corresponding to the shapes of the recess 6 and the opening recess 9, and is equal to the volume of the recess 6 and the opening recess 9. The metal material of is plastically flowed to the protrusion 2.

Although the metal plate assembly according to the embodiment of the present invention has been described above, the present invention is not limited to the one described in the above-described embodiment, and various matters within the scope of the claims. Changes are possible.

1 Pressed product (metal plate)
1a One side of the stamped product 1b The other side of the pressed product 2 Protrusion 20 Protrusion end face 20a Central recess 20a Inner peripheral surface of the central recess 20b Peripheral part 3 Flat part 4 Wave part 6 Recess 6a Inner circumference of the recess Surface 7 Die 7a Die hole 7b Knockout 8 Punch 9 Opening recess 9a Step between the inner peripheral surface of the opening recess and the inner peripheral surface of the recess 10 Metal plate assembly G Gap of stamped product D ₂ Diameter of protrusion height L _G stampings distance T ₃ the thickness of the flat portion of the gap in the radial H ₂ projections D ₆ recess

Claims (6)

Is formed on the protruding flat portion to secure the projecting the gap in terms of hand, the projection is a central recess is formed on the end face, the surface opposite to the surface on which the projections are formed, A plurality of metal plates of the same shape of the pressed product having recesses having a diameter smaller than the protrusions are arranged so as to have a gap, and the peripheral edge of the end face of the protrusions of the pressed product is formed. A metal plate assembly characterized in that it is in contact with a portion of an adjacent other stamped product on the opposite surface where the recess is not formed . In the metal plate assembly according to claim 1,
A metal plate assembly characterized in that the height of the protrusion is larger than the thickness of the flat portion. In the metal plate assembly according to claim 1 or 2.
An aggregate of metal plates characterized in that the inner peripheral surface of the central recess portion has an inclined surface. In the metal plate assembly according to claim 3,
An aggregate of metal plates characterized in that the inner peripheral surface of the central recess portion has a plurality of inclined surfaces having different inclination angles. In the metal plate assembly according to any one of claims 1 to 4,
A metal plate assembly characterized in that an opening recess having a diameter larger than that of the protrusion is formed on the opening side of the recess. A metal plate assembly manufacturing method for manufacturing a metal plate assembly according to any one of claims 1 to 5,
A die hole is provided in which the shape of the outer peripheral surface of the protrusion of the pressed product is the shape of the inner peripheral surface, and a knockout having the shape of the inner peripheral surface and the bottom surface of the central recess is provided inside the die hole. metal die that is, the metal plate is brought into contact with, pressing a punch having an inner peripheral surface and the bottom surface of the shape of the recess, and forming the projection by plastic flow of metal to the protrusion Sheet assembly manufacturing method.

Images