JP2840653B2 - Manufacturing method of metal corrugated plate - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method for manufacturing a metal corrugated plate, and more particularly, to the manufacture of a metal corrugated plate suitable for manufacturing concentric metal corrugated plates such as a metal diaphragm. It is about the method.

[Problems to be solved by conventional technology and invention]

The concentric wavy plate can be used as a metal diaphragm in the pressure-sensitive part of a pressure gauge or the pressure regulator of a gas pressure regulator, and the thickness of the metal diaphragm used in this field is extremely large. It is thin and uses its spring properties to control gas pressure to improve the safety of gas supply for LP gas and city gas.

2. Description of the Related Art Conventionally, the most common technology for processing a metal corrugated plate is mainly press molding, high energy rate molding such as electric discharge machining, electromagnetic molding, and explosion molding.

By the way, the hot working may deteriorate the physical and mechanical properties of the material and impair the spring property, whereas the cold working requires a large-sized and large-capacity apparatus. In addition, high-energy speed molding is poor in mass productivity and increases the number of processing steps.

As a forming method for solving the above-mentioned problems, a method of forming a thin metal plate into a corrugated plate by using rolling of steel balls is used. (3) has attracted attention because of its low molding cost.

However, simply forming the metal diaphragm by using the rolling of steel balls can form a normal shape only when the thickness of the plate material is at least 0.1 mm. Since wrinkles and cracks are generated on the surface of the corrugated plate, there is a problem that the surface does not reach a level practically used as a molded product.

Therefore, in view of the conventional problems described above, the present invention forms a metal corrugated plate using rolling of steel balls without causing wrinkles or cracks on the surface, even with a thin plate material. It is an object of the present invention to provide a method of manufacturing a metal corrugated plate that can be used.

[Means for solving the problem]

In order to solve the above-mentioned problems, a method of manufacturing a metal corrugated plate according to the present invention comprises fixing a material formed in a predetermined shape to a female mold, and fixing the material to a support member so as to be freely rotatable. A method of manufacturing a metal corrugated plate, in which a female mold or a support is rolled while pressing a steel ball revolving around a central axis while forming a waveform following the female mold to produce a metal corrugated plate. Wherein the material is formed by laminating a plurality of thin-film materials formed into a predetermined shape and fixing them together at a peripheral portion.

[Action]

In the above configuration, a plurality of thin-film materials formed into a predetermined shape are laminated, and the materials fixed to each other at the peripheral portion are fixed to a female mold, and the material is rotatably provided on a support. Rolling the female mold or support while pressing the steel ball, and forming a corrugated sheet following the female mold to produce the metal corrugated plate, each laminated material has a thickness of 0.1 Even in the case of a thin film material having a thickness of 0.1 mm or less, a plurality of layers are laminated and fixed to each other at the peripheral portion to be integrated, so that the laminated material 1 has the same rigidity as a material having a thickness of 0.1 mm or more. Even when the steel ball is formed by rolling, the peripheral portion of the material 1 hardly shrinks and the thrust load during the forming is small, so that no wrinkles or cracks occur in the formed product.

〔Example〕

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

FIG. 1 is a drawing for explaining an embodiment of a method of manufacturing a metal corrugated plate according to the present invention in which a concentric metal corrugated plate is formed by utilizing rolling of a steel ball, and is first shown in FIG. As described above, a material 1 having a predetermined shape such as a disc is formed from a thin metal plate having a thickness of 0.1 mm or less, and the outer portion of the material 1 outside the corrugated portion is circumferentially formed at three or more places in advance. After the determination, the through hole 1a or the groove is formed in that portion.

Then, as shown in FIG. 2B, a rivet 3 is provided on a mold (corrugated die) 2 holding a mold 2a for molding the material 1 and a plurality of laminated materials 1 are inserted through the through holes 1a.
And put the one integrated. In the drawings, the thickness of the laminated material 1 is exaggerated, and is actually thinner. The number of the materials 1 to be laminated is set so as to secure at least the rigidity required for molding. As a guide, it is possible to use a material of 0.1 mm or more in a case of one piece to obtain a reasonable result. The lamination of the raw materials can be performed at the stage of the thin metal plate before forming the raw material having a predetermined shape. This is preferable because the alignment of the raw materials at the time of lamination is not required.

When the preparation as described above is completed, the steel ball support (rolling portion) to which the steel ball 4 is attached from above as shown in FIG.
5 is pressed while rotating, the laminated material 1
Is molded following the mold 2a as shown in FIG. When the molding is completed, the plurality of blanks 1 are taken out from the female mold 2 and the rivets 3 are removed, thereby forming a molded product 1 having a molding groove 1b as shown in (d) (plan view) and (e) (cross-sectional view). Can be obtained, for example, by further shearing the portion indicated by the dotted line to remove the peripheral portion where the through hole 1a is formed. In addition, it is efficient to remove the peripheral portion by shearing in a state where a plurality of molded products 1 'are stacked.

In the example described above with reference to FIG. 1, the crimping with the rivets 3 is used to integrate the laminated materials 1, but the tightening with the bolts and nuts 7 may be used as shown in FIG. .

Further, simply, as shown in FIGS. 3 (a) and 3 (b) (enlarged partial view), the outer waste material portion is compressed and fixed by a lot 8 driven by a hydraulic press or the like, so that the raw material 1 is fixed. And positioning and fixing with respect to the female mold 2 may be performed.

Further, in the embodiment shown in FIGS. 1 to 3, the side of the steel ball 4 is rolled while the side of the die 2 for fixing the laminated material 1 is fixed. May be fixed, and the material may be fixed, and the trapezoid 2 may be rolled.

Furthermore, the number of the forming grooves 1b is one, but may be plural.

In the method of the present invention described above, since a plurality of thin film materials having a thickness of 0.1 mm or less are laminated and the materials fixed to each other at the peripheral portion are fixed in a female mold, the laminated material 1 has a thickness of 0.1 mm.
It has the same rigidity as the material with the above thickness, and even if it is formed by rolling steel balls, there is almost no shrinkage of the peripheral part of the material 1 and the thrust load at the time of forming is small. Wrinkles and cracks do not occur.

In the case of press molding, the height of the wave is limited to 10 times the material, but when the rolling of steel balls is used, the height can be increased to 30 times.

As the processing apparatus used in the above-described method, those shown in FIGS. 4 and 5, respectively, can be used.

In the apparatus shown in FIG. 4, a steel ball support 10b is fixed to a lower end of a main shaft 10a to which rotation and lowering force are given by a driving means (not shown) to form a rolling portion 10, and a steel ball support 10b is provided on the steel ball support 10b. 10c is installed. Steel ball 10c to steel ball support 10b
In order to allow the steel ball 10c to revolve around the main shaft 10a while rotating, as shown in FIG. 3 (b), the steel ball 10c is fixed to one shaft at a predetermined pitch like a skewered dumpling. Two of them are passed through 1d. In this manner, three shafts each having two steel balls mounted thereon are radially arranged at equal intervals of 120 °, and each end thereof is located at the center 10b ₁ and the outer edge 10b _{2 of the} steel ball support 10b. Each is supported. That is, six steel balls 10c are set in the rolling portion 10 which is a male mold.

On the other hand, the mold 11 that holds the mold to be molded is a male ring.
As shown in FIGS. 1 to 3, a plurality of blanks 1 are supported and fixed on the female mold 11, and a plurality of blanks 1 are integrated with each other. Is fixed to the female mold 11 by the presser plate 14 urged.

The apparatus of FIG. 4 has the advantage that each steel ball 10c rotates in a plane perpendicular to the axis 10d, and once set, the rolling part 10 is always integrated.

In the apparatus shown in FIG. 5, as shown in FIG. 5 (a), a female mold 20b is fixed to the lower end of a main shaft 20a to which a rotating and lowering force is applied by a driving means (not shown).
The rolling portion 20 is formed by fixing the peripheral portion of the material 1 via the disc spring 20d by 20c. As a result, the female mold 20b and the material 1 descend while rotating together with the main shaft 20a that descends while rotating.

On the other hand, the male mold constituted by the steel balls 21a is set under the raw material 1. The punch 21 is formed by providing the steel ball 21a on the upper surface of the steel ball support 21b. Specifically, as shown in (b), the radius of the wave of the female die 20b rotating on the upper surface of the male die 21b is reduced. At a certain interval on the combined concentric circles, a hole of a shape of a missing ball having a height smaller than the radius of the steel ball 21a is drilled by precision machining, and the steel ball 21a is arranged thereon, or (c)
As shown in the figure, the upper surface of the steel ball support 21b is provided with a corrugated shape 21c having a groove that is shallower than the radius of the steel ball 21a in accordance with the female wave, and the steel ball 21a is placed thereon. .

〔effect〕

As described above, according to the present invention, even if each of the laminated materials is a thin film material having a thickness of 0.1 mm or less, a plurality of the materials are integrated by being laminated and fixed to each other at a peripheral portion. Therefore, the laminated material 1 has the same rigidity as a material having a thickness of 0.1 mm or more. Even if the material is formed by rolling the steel balls, the peripheral portion of the material 1 hardly shrinks, and Since the thrust load is small, wrinkles and cracks do not occur in the molded product. Therefore, even if the thickness of the plate is thin, it does not cause wrinkles or cracks on the surface, and the rolling of the steel ball is used to form a metal corrugated plate with a large ratio of the wave height to the thickness of the material. Will be able to

[Brief description of the drawings]

FIG. 1 is a view for explaining one embodiment of a method for manufacturing a metal corrugated plate of the present invention, FIGS. 2 and 3 are views each showing a modification of a part of FIG. 1, FIG. FIG. 5 is a diagram showing an example of a processing apparatus used for carrying out the method of the present invention. 1 ... Material, 2,14,20b ... Female type, 1a, 10c, 21a ... Steel ball, 5,10b, 21b ... Steel ball support.

Claims (1)

(57) [Claims] 1. A method in which a material formed in a predetermined shape is fixed to a female mold, and the female mold or the support is rolled while pressing a steel ball rotatably provided on a support against the material. A method of manufacturing a metal corrugated plate by forming a waveform imitating a female die into a metal corrugated plate, wherein the material is formed by laminating a plurality of thin film materials formed into a predetermined shape, A method for manufacturing a metal corrugated plate, comprising: