JPH02235528A - Variable die device - Google Patents

Abstract

PURPOSE:To enable to deal with various shapes with one variable die device by providing plural rod-like dowel members arranged in projectable and a clamping mean which fixes at least one of those dowel members in a projecting state so as to constitute a prescribed shape. CONSTITUTION:Plural dowel members 16 are provided in an upper die and a part of dowel members 16a is made to project and the dowel members 16 are clamped wholly with fixing guides 18 for upper die. Similarly, plural dowel members 20 are provided on a lower die 14 and each dowel member 20 consists of dowel members 20a with the wider upper face than the upper die 12 and dowel members 20b, 20c projecting downward corresponding to the dowel members of the upper die 12. The dowel members 20 are clamped and fixed with a fixing guide 22 for lower die. The fixing guides 18, 22 clamp sides B, D in the direction that members 24, 26 are approached mutually with clamping bolts 28 through clamping members 24, 26 and energize two sides A, C in the direction of compression through tapered faces 24a, 26a. Thus various shapes of die can be dealt with one variable die device.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a variable die device for forming a mold to have a concave portion of a predetermined shape, or a variable die for punching to have a punched shape of a predetermined shape. Regarding Apparatus [Prior Art] Conventionally, when a flat plate as a workpiece e is drawn to produce a workpiece f having a concave portion as shown in FIG. 5, the process shown in FIG. As shown, it is configured to use a mold device having a mold machined into a required mold shape. Here, in the figure, reference numeral a indicates an upper molding mold, reference numeral b indicates a lower molding mold, reference numeral C indicates a gusset, and reference numeral d indicates a stripper plate.

[Problems to be Solved by the Invention] The conventional mold device configured as described above must be provided with a molding upper mold and a molding lower mold according to the mold shape of the workpiece. It has been pointed out that when there are many types of molds, the processing costs for the molds are high and the processing time is long.

In particular, in an environment where product production periods have become shorter in recent years and new product development periods have to be shortened accordingly, the former can lead to higher product costs, while the latter can lead to slower start-up of new product production. This could lead to a situation where you will not be able to make it in time.

This invention was made in view of the above-mentioned problems, and an object of the invention is to provide a variable type device that is inexpensive and can shorten processing time. [Means for Solving the Problems] In order to solve the above-mentioned problems and achieve the objects, a variable mold device according to the first aspect of the present invention is a variable mold device for molding to have a recessed part of a predetermined shape. There is a plurality of rod-shaped bridge members disposed so as to be protrusive, and a bridge member for fixing the protruding state with at least one of these bridge members protruding so as to constitute the predetermined shape. It is characterized by comprising a tightening means for tightening.

Further, a variable type device according to a second aspect of the present invention is a variable type device for punching out a punched shape having a predetermined shape, and includes a plurality of upper piece members arranged so as to be able to protrude from each other;
The present invention is characterized in that at least one of these bridge members is provided with a tightening means for tightening the bridge member in order to fix the protruding state of at least one of the bridge members so as to form the predetermined shape.

[Function] In the variable type device configured as described above, at least one of the plurality of bridge members is made to protrude depending on the predetermined shape of the recess or the predetermined shape of the punched shape to be machined,
The shape of the mold is defined by fixing the protruding state with the tightening means. In this way, it becomes possible to adapt to various mold shapes using one variable mold device, thereby reducing mold forming costs and shortening the machining time for machining the mold.

[Embodiment] The configuration of an embodiment of the variable mold device according to the present invention will be described in detail below with reference to the accompanying drawings when applied to a mold device.

This forming mold device IO is a device for drawing a metal plate, and as shown in FIG.
It is equipped with 4. This forming die apparatus 10 is configured to draw a workpiece indicated by the symbol W from a flat metal plate so that a part thereof has a deep drawing part. Here, in this embodiment, the drawn shape includes a rectangular first recess W1 directly formed on the surface of the metal plate, as shown in the illustrated workpiece W, and a rectangular first recess W1 formed directly on the surface of the metal plate. A second recess W2 is formed to be further recessed from a part of Wl.

On the other hand, the upper mold 12 includes a plurality of rod-shaped bridge members 16, and adjacent bridge members 16 can slide and protrude from each other.

In this embodiment, some of the corresponding bridge members lea protrude downward to define the second recess W2, and the remaining bridge members 16b directly define the first recess W1. It is set as follows. In this state in which some of the bridge members 16a are protruded, the upper die fixing guide 18 tightens the bridge members 16 as a whole, so that the projected shape shown in the figure is fixed. Further, like the upper mold 12, the lower mold 14 also includes a plurality of rod-shaped bridge members 20, and adjacent bridge members 20 can slide and protrude from each other. In this embodiment, each piece member 20 is connected to the upper mold 1.
A bridge member 20a as a base end portion having an upper surface wider than that of the bridge member 20a.
, a piece member 20b protruding downward corresponding to the remaining piece member 16b of the upper mold 12, and a part of the piece member 16 of the upper mold l2.
Corresponding to the bridge member 20c, the bridge member 20c further projects downward from the bridge member 20b. In addition, these piece members 20 are in a partially protruded state as shown in the figure, by the lower mold fixing guide 22,
These bridge members 20 are tightened as a whole and are set to be fixed in the illustrated protruding shape.

Here, as shown in FIG. 2, the above-mentioned upper mold fixing guide 18 and lower mold fixing guide 22 are arranged on three sides A, B, within the periphery of the corresponding piece member 16.20. A first tightening member 24 formed to surround C, a second tightening member 26 formed to surround the remaining side D and both end sides of the first tightening member 24, and a tightening bolt 28 as a biasing member that draws the second tightening members 24, 26 toward each other.
It is composed of:

The outer surface at both ends of the first tightening member 24 and the inner surface at both ends of the second tightening member 26 come into sliding contact with each other. configured, and these tapered surfaces 24a. 26a are set to be biased inwardly by coming close to each other.

In this way, by tightening the first and second tightening members 24, 26 in the direction closer to each other via the tightening bolt 28, the center side of the first tightening member 24 comes into contact with the bridge member 16. 20 and the central side of the second tightening member 26 come into contact with the bridge member 16.
One side D of 20 is biased in the compression direction. Also, due to the proximity of these first and second tightening members 24, 26, through the tapered surfaces 24a, 26a,
Both end sides of the first tightening member 24 are connected to the bridge member 16.20.
The remaining mutually opposing sides A and C are also biased in the compression direction. As a result, the bridge members 16, 20 are entirely tightened from the periphery, and are held fixed in their assembled state, that is, in their protruding state.

Since the upper die 12 and the lower die 14 are configured in this way, in this embodiment, they are set to draw a concave shape having two stages of concave portions W, W2.
It is now possible to change and set the dent shape to any desired shape.
This pair of upper mold 12 and lower mold 14 can accommodate various shapes.

As a result, in this embodiment, the molding cost is reduced, the molding time is shortened, and a situation in which the molding is not completed in time for manufacturing the product is reliably avoided.

Incidentally, the upper mold 12 and lower mold 14 configured in this manner are attached to a press die set 30 shown in FIG. 3 to be specifically used for a molding operation.

That is, this breath die set 30 includes a die set 32 and a stripper plate 34.

That is, when drawing with this press die set 30, a flat metal plate W is inserted into the upper die 12 and the lower die l4.
and is fixed onto the upper surface of the lower mold 14 via a fixing means (not shown). Then, by applying a downward load to the upper die 12 by a drive source (not shown),
The upper mold 12 is processed, and the metal plate W as the workpiece is drawn. Note that FIG. 3 shows the state at the time when the drawing process is completed.

It goes without saying that this invention is not limited to the configuration of the embodiments described above, and can be modified in various ways without departing from the gist of the invention.

For example, in the above-mentioned embodiment, the molding device 10 is described as being used as a molding device for drawing, but the present invention is not limited to such application, and can be applied to a punching molding device. The same applies to In this case, each piece member 16.20 has a punch member 16', 20 having a similar shape and whose lower end periphery functions as a cutting edge.
', and as shown in FIG. 4, for example, when punching a metal plate W as a workpiece with a U-shaped opening w3, the upper die l2 has a punch member 16' corresponding to this punching shape. partially protrude downward, lower side 1
4, the punch member 2o' corresponding to the protruding punch member 16' is set to protrude downward. In this way, this die device can also be used as a punching die.

[Effects of the Invention] As detailed above, the variable type device according to the first aspect of the present invention is a variable type device for molding to have a recessed portion of a predetermined shape, and includes a plurality of variable type devices arranged so as to be able to protrude from each other. and a tightening means for tightening the bridge member to fix the protruding state of at least one of the bridge members in a protruding state so as to constitute the predetermined shape. It is a feature. Further, a variable type device according to a second aspect of the present invention is a variable type device for punching out a punched shape having a predetermined shape, and includes a plurality of upper piece members arranged so as to be able to protrude from each other;
The present invention is characterized by comprising a tightening means for tightening the bridge member to fix at least one of the bridge members in the protruding state so as to constitute the predetermined shape. Therefore, according to the present invention, a variable type device is provided which is inexpensive and can shorten processing time.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the configuration of one embodiment of the variable device according to the present invention; Fig. 2 is a top view showing the tightened state by the fixed guide; Fig. 3 is the variable device shown in Fig. 1; A front sectional view schematically showing the configuration of the attached press die set; Fig. 4 is an exploded perspective view showing the state in which the variable type device shown in Fig. 1 is used as a punching die; Fig. 5 is a conventional drawing of a workpiece. Perspective view showing the shape:
FIG. 6 is a front sectional view schematically showing the configuration of a conventional workpiece squeezing device. In the figure, lower mold, 1 id, 2 id, 2 pass surface, 2 pass surface, 2 10...molding mold device, 12...upper die, 14...6
... Upper die piece member, 18... Upper die fixing gas O...
Lower die piece member, 22... Lower die fixing gage 4... First tightening member, 24a... Tee 6... Second tightening member, 26a... Tee 8... Tightening bolt, 3
0...Press die set, 32...Die set, 3
4... Stritzba plate. Figure 1 Figure 2 Figure 3 Figure 1') +6 (20) Figure 4

Claims (2)

[Claims] (1) A variable type device for molding a recessed portion of a predetermined shape, comprising: a plurality of rod-shaped bridge members disposed so as to be able to protrude from each other; and at least one of these bridge members arranged in the predetermined shape. 1. A variable type device comprising a tightening means for tightening a bridge member to fix the protruding state in a protruding state to form a shape. (2) A variable type device for punching out a punch having a predetermined shape, which includes a plurality of upper piece members arranged so as to be able to protrude from each other, and at least one of these piece members arranged in the predetermined shape. 1. A variable type device comprising a tightening means for tightening a bridge member to fix the protruding state in a protruding state to form a shape.