JPH06207673A - Manufacture of metal laminated gasket - Google Patents

Abstract

PURPOSE:To provide a method of manufacturing a metal laminated gasket, which can avoid affection upon surface pressure distribution, management for lamination, complication and erroneous working, by forming a planar metal gasket in which at least two thin metal sheet gasket members are connected together with a line-symmetric relationship, and they by folding the metal gasket along the connected part for lamination. CONSTITUTION:A plurality of metal gasket members 2 are punched out from a thin metal sheet material. In this stage, different layers of a metal laminated gasket, that is, two adjacent layers are formed. The metal gasket members 2 which are connected together are superposed with each other by folding a connected part 3 positioned on the center line with which the gasket members 2 are symmetric with each other, so as to form the two adjacent layers of the metal laminated gasket. The superposed metal gasket members 2 are directly used as the metal laminated gasket, or are combined with another metal gasket member so as to form a metal laminated gasket. Accordingly, it is possible to eliminate the necessity of a conventionally required positioning work for members.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a metal laminated gasket formed by stacking metal gasket members made of a plurality of sheet metal materials on each other.

[0002]

2. Description of the Related Art A metal laminated gasket is formed by punching metal gasket members to be laminated from a thin metal plate material and stacking the metal gasket members on top of each other.
It was created by connecting with a connecting means such as eyelet processing or spot welding.

However, when a joining member for eyelet processing is used, the influence on the surface pressure distribution of the metal laminated gasket caused by the presence of the joining member cannot be ignored, and the joining member is attached at the design stage. I had to consider the position as well.

Further, the metal gasket members constituting one metal laminated gasket have subtly different shapes in each layer, and it is always strict which metal gasket member is laminated in what order and in what direction. It was necessary to manage and work in.

Further, in order to stack and bond the respective metal gasket members, it is possible to perform the bonding only after the mounting holes provided in the respective metal gasket members are superposed so as to match each other. In addition to the above-mentioned parts management, the work of superposing the metal gasket members becomes complicated, and the connecting members cannot be easily attached due to misalignment of positions and the like.

In addition, in recent years, the metal laminated gasket has a large number of metal gasket members, and since different metal gasket members are used for each layer, the assembly work of the metal laminated gasket is complicated, and the metal gasket is complicated. It was easy to make an assembly error such as an excess or deficiency in the number of members or the use of a metal gasket member in the wrong layer.

[0007]

SUMMARY OF THE INVENTION The present invention eliminates the need for a step for joining metal gasket members, such as eyelet processing and spot welding, to prevent parts from being out of stock due to work mistakes. An object of the present invention is to provide a method capable of easily manufacturing a metal laminated gasket.

[0008]

According to the method of manufacturing a metal laminated gasket formed by laminating a plurality of metal gasket members according to the present invention, first, at least two metal gasket members are made of a thin metal material. A metal gasket member having a planar shape is formed so as to be connected in a line-symmetrical manner. Then, the connected metal gasket members are bent around the connecting portion to stack the metal gasket members on each other.

[0009]

Function: A plurality of metal gasket members are produced by one punching operation. If necessary, the bead provided around the bore hole is formed by this punching operation.
Then, by bending each metal gasket member around the connecting portion, the metal gasket members connected in a line-symmetrical relationship are overlapped with each other in a mutually matched positional relationship, and at the same time, a metal gasket member matched with each layer is arranged. It When grommets are provided on the periphery of bore holes, etc., this overlapping state is held by the bent connecting parts, no positional deviation occurs, and the stacking relationship of the metal gasket members is maintained. Will not occur.

[0010]

EXAMPLE As shown in FIGS. 1 and 2, a method for manufacturing a metal laminated gasket according to an example of the present invention is performed by using a plurality of (two in the illustrated case) metal gasket members from a thin sheet metal material 1 as a raw material. 2 is punched out to form. Each metal gasket member 2 is formed so as to form different layers of the metal laminated gasket to be made, more preferably two adjacent layers. The metal gasket members 2 are also connected to each other by a connecting portion 3, and are located on both sides of the connecting portion 3 in a line-symmetrical relationship with each other. Two are formed on top of each other to form a metal laminated gasket or part thereof.

Beads 5 around generally used bore holes 4 and other required parts, and various holes 6 such as water holes and oil holes
Is preferably created at the time of this punching formation,
At this time, the bead 5 on the surface of the metal gasket member 2
It should be noted that the direction of is formed in a predetermined direction in the subsequent bending step.

The metal gasket members 2 connected to each other are
As shown in FIG. 3, the portion of the connecting portion 3 located on the center line L which is line-symmetric with respect to the metal gasket members is bent,
One metal gasket member is overlaid on the other metal gasket member to form adjacent layers of the metal laminated gasket.

In this case, it is preferable that the connecting portion 3 for connecting and holding the metal gasket members is formed so that the folded-back portion thereof is located outside the flange surface during use. Avoid adversely affecting the surface pressure distribution of the shaped gasket.

When the metal gasket members 2 formed in a line-symmetrical relationship do not form layers adjacent to each other of the metal laminated gasket but another metal gasket member is interposed therebetween, the connecting portion 3 is used. It can be dealt with by forming it relatively long or by bending the connecting portion 3 at two positions on both sides of the center line L. In addition, when three or more metal gasket members are simultaneously formed, they should be formed by bending each center line L in the opposite direction, sequentially folding in the same direction, or by appropriately mixing and bending both. Is also possible.

The metal gasket member 2 laminated as described above is used as it is or in combination with another metal gasket member to form a metal laminated gasket. Here, when it is necessary to perform grommet processing or the like on the bore hole 4 or the like, the superposed metal gasket members 2 are maintained in a state of being connected to each other by the connecting portion 3, and the metal gasket members between No positioning work is required.

[0016]

According to the present invention, a plurality of metal gasket members 2 are made from a thin metal material by a single punching operation, and the connecting portion 3 is bent along the center line L, so that a predetermined positional relationship is obtained. The metal gasket members can be formed in a state of being overlapped with each other, and the metal laminated gasket can be formed as it is or in combination with another metal gasket member.

Further, since at least the bent portion of the connecting portion 3 is formed outside the flange surface, the connecting portion 3 does not adversely affect the surface pressure distribution of the metal laminated gasket.

Further, each metal gasket member 2 is connected to the connecting portion 3.
Since the metal laminated gasket is created in the state of being joined by, the positioning work to match the positional relationship between each metal gasket member and the eyelet processing and the dot processing to maintain the positional relationship between each metal gasket member. There is no need to perform welding, etc., and the number of parts used and the number of steps can be reduced. Furthermore, there is an excess or shortage of metal gasket members, the use of metal gasket members of the wrong layer, or the wrong placement of the front and back. It is possible to prevent work mistakes during assembly,
The metal laminated gasket can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a plan view for explaining a process of punching and making a metal gasket member from a thin plate metal material in an embodiment of the present invention.

FIG. 2 is a plan view showing an example of a punched metal gasket member.

FIG. 3 is a cross-sectional view for explaining a step of bending the metal gasket member shown in FIG. 2 to create a metal laminated gasket or an overlapped metal gasket member.

[Explanation of symbols]

 1 Thin metal material 2 Metal gasket member 3 Connection part L Center line

Claims (1)

[Claims] 1. A method of manufacturing a metal laminated gasket formed by stacking a plurality of metal gasket members, wherein at least two metal gasket members are connected from a thin metal material in a line-symmetrical relationship with each other. And a metal gasket member having a flat shape is formed, and the metal gasket members connected to each other are bent around a connecting portion, and the metal gasket members are laminated on each other.