JPS6195741A - Molding device - Google Patents

Abstract

PURPOSE:To simplify the construction of a molding device by providing a converting mechanism which converts the moving direction of movable cores, engaging the same with the plural movable cores and actuating simultaneously the movable cores to form cavities. CONSTITUTION:The movable cores 5 forming the cavities 7 consist of the dividable movable cores 5a-5d which are detained via a moving member 4 to a core driving shaft 6 to constitute a metallic mold 3. The shaft 6 is driven in the direction X in the stage of casting, then the member 4 is guided and slid by operating members 19 in an oblong hold 18 along a slope 17 and the cores 5a are actuated by the members 19 in the direction A cooperatively therewith. The cavities 7 are thus formed in the mold 3 and in this stage a molten metal is cast into the cavities 7 and is cooled. The mold construction of the molding device is thus simplified and the need for a shell core, etc. is eliminated, by which the cost of manufacturing the metallic mold and the molding cost are reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a casting mold apparatus for simultaneously casting a plurality of products using a mold consisting of a plurality of mutually separable component parts.

b. Prior Art A conventional two-cavity casting mold apparatus is shown in FIG. 5 or 6. The casting mold apparatus 50 shown in FIG. 5 forms a part 51a, which is a part of the wall surface forming a cavity 51 that becomes a product shape, with a shell core 52, etc. other than the mold, and the other part 51b is formed with a mold. It is formed by a movable core 53 that constitutes.

Further, in the casting mold apparatus 50 shown in FIGS. 6 and 7, a portion 51a, which is a part of the wall surface forming a cavity 51 that becomes a product shape, is operated by opening and closing a movable mold 54 with respect to a fixed mold 55. It is formed by a second movable core 56. The other portion 51b of the cavity 51 is formed by a first movable core 53 that constitutes a mold.

The second movable core 56 constitutes a mold, and is slidably assembled to the movable mold 54 and reciprocated in the direction of the arrow in the figure via an angular pin 57 assembled to the fixed mold 55. It is arranged like this.

Problems to be Solved by the C0 Invention However, the casting mold device 50 shown in FIG.
2, etc., which increases the cost of the casting mold by the cost of the core, and also causes the casting surface of the part where the shell core etc. is used to be different from the casting surface of the part where the mold is used. However, there was a problem that the appearance quality was not uniform and the product value was inferior. Furthermore, there is a risk that defects caused by the core, such as core gas and breakage, may occur, and the product lacks credibility.

On the other hand, in the casting mold apparatus 50 shown in FIGS. 6 and 7, the mold structure is complicated, and the setup time for disassembling and assembling the mold is long, resulting in a decrease in work efficiency. Furthermore, if the movable core 56 sticks together due to cracks or the like occurring in the sliding portion of the second movable core 56, the movable mold 54 and the fixed mold 55 cannot be opened, and if the mold is forcibly opened, the angular pin 57 There was a risk of it breaking. Furthermore, the movable type 54
Since the second movable core 56 cannot be operated in the open state, there is a problem in that it is difficult to correct the mold alignment and the work is time-consuming.

The present invention has been made to solve the problems of the prior art described above, and its gist is to provide a casting mold device for simultaneously casting a plurality of products using a mold consisting of a plurality of mutually separable component parts. , a conversion mechanism for converting movement in the left and right direction into movement in the front and back direction is provided between the teeth formed by the plurality of movable cores constituting the mold, and the conversion mechanism is engaged with the movable core between the cavities. The purpose is to simultaneously operate these movable cores.

Means for solving the d9 problem The present invention will be explained in detail below based on the illustrated embodiments.

FIGS. 1 to 3 show one embodiment of the present invention, and a casting vehicle assembly W1 is an apparatus for simultaneously manufacturing two products, and includes a die base 2 and a die base 2 disposed on the upper surface of the die base 2. The mold 3 includes a pair of molds 3, and a moving member 4 configured to be linearly movable by a predetermined driving means.

The mold 3 has four movable cores 5a that can be separated from each other,
5b, 5c, and 5d, and the movable core 5 composed of these movable cores is movably arranged at a predetermined position by a core drive shaft 6 and a moving member 4, thereby forming a cavity 7 in the shape of a product. (See Figure 2)
As shown in FIGS. 1 and 3, the movable core 5a is arranged so that its bottom surface and both side surfaces slide smoothly while being guided by core guides 8.9.

The moving member 4 is disposed between the two cavities 7, and both ends are slidably supported by the support base 10. The support stand 10 has a bottom portion 11 fixed to the upper surface of the die base 2. The movable member 4 consists of a planar trapezoidal actuating part 12 provided at the center and a shaft part 13, and a part of the shaft part 13 is integrally attached to the upper side part 12a of the actuating part 12 with a port 14. It is composed of a guide bar 15. A drive shaft 16 for linearly moving the moving member 4 is connected to one end of the shaft portion 13.

Slanted portions 17 are provided on both sides of the actuating portion 12 and are inclined with respect to the linear direction of the shaft portion 13.
A long hole 18 is formed along. A pair of actuating members, which will be described later, are attached to the elongated hole 18 so as to be slidable relative to the inclined portion 17. The operating member 19 is fitted into the movable core 5a, and the stud bolt 2
It is fixed by screwing in 0.

In order to manufacture a product using the casting mold apparatus 1 having the above configuration, the following operations are performed.

First, the core drive shaft 6 is driven toward the center to arrange the movable cores 5b, 5c, and 5d at predetermined positions, and the drive shaft 16 is driven in the Y direction indicated by the arrow in the figure. Then, the moving part #4 slides while being guided by the actuating member 19 in the long hole 18 provided along the inclined part 17. In conjunction with the movement of the moving member 4, the movable core 5a operates in the direction A via the operating member 19, closing the mold 3 and forming the cavity 7. The molten material in this state is poured into the cavity 7 and cooled.

When demolding, the core drive shaft 6 is driven in the opposite direction to the above to place the movable cores 5b, 5c, and 5d in their original positions, and the drive shaft 16 is driven in the Y direction.

Then, the moving member 4 slides while being guided by the actuating member 19 within the elongated hole 18. In conjunction with this movement of the moving member 4, the movable core 5a operates in the direction B opposite to the above via the operating member 19, thereby opening the mold 3. Remove the product in this state.

In this embodiment, two movable cores 5a are simultaneously actuated by one movable member 40 actuating section 12, so that the forces applied to the actuating section 12 are well balanced and the movable cores 5a can be smoothly operated. I can do it.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and various modifications and changes can be made based on the technical idea of the present invention.

For example, in the previously described embodiment, the movable core 5a moves in the A direction to close the mold 3 when the drive shaft 16 is driven in the Y direction. As shown in FIG. 4, the inclined direction of the inclined portion 17 may be reversed by disposing it in the opposite direction to that of the previously described embodiment. In this case, the movable core 5a is moved in the B direction with respect to the drive of the drive shaft in the X direction. The configuration is such that the mold 3 is opened by moving to .

e1 Effects of the Invention As described above, the casting mold device according to the present invention engages a conversion mechanism that changes the direction of movement with predetermined movable cores constituting a mold, and operates these movable cores to form a cavity that forms a product shape. As a result, compared to a conventional casting mold apparatus using a shell core or the like, the cost of the core becomes unnecessary, and the cost of the casting mold can be reduced. Moreover, since defects caused by the core are eliminated, the defective rate of products can be reduced. Furthermore, the entire surface of the product becomes a molded surface, improving the appearance quality and increasing the commercial value.

Furthermore, the present invention has a simpler mold structure than conventional casting mold devices using angular pins, and can reduce mold manufacturing costs. Moreover, since the movable core can be operated independently, it is easy to confirm that the mold is closed.

Furthermore, since the setup for disassembling and assembling the mold can be done in a short time, recovery can be done quickly in the event of a problem.
Work efficiency can be improved.

[Brief explanation of drawings]

1 to 3 show one embodiment of the casting mold device according to the present invention, FIG. 1 is a perspective view showing the relationship between the movable member and the movable core, and FIG. 2 is a plan view thereof. 3 is a sectional view taken in the direction of the arrow in FIG. 2, FIG. 4 is a plan view conceptually showing a modification of the movable member of the casting mold device, and FIGS. 5 to 7 are conventional casting mold devices. FIG. 5 is a plan view of a casting mold device using a core etc., FIG. 6 is a plan view of a casting mold device using an angular pin, and FIG. It is an A-line sectional view. 1... Casting mold device, 3... Mold, 4...
・Movable member, 5... Movable core, 7...
・Cavity, 12... Operating part, 16...
・Drive shaft, 17... Inclined part, 19...
・Operating parts. Figure 7

Claims (1)

[Claims] In a casting mold device that simultaneously casts a plurality of products using a mold consisting of a plurality of component parts that can be separated from each other, horizontal movement is caused between cavities formed by a plurality of movable cores constituting the mold. 1. A casting mold apparatus characterized in that a conversion mechanism for converting movement in the back and forth direction is provided, the conversion mechanism is engaged with movable cores between the cavities, and these movable cores are operated simultaneously.