JPH0231240Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" The present invention relates to a die casting mold.

``Conventional technology'' In conventional die casting molds, the product cast in the cavity and the solidified product in the runner are extruded from the movable mold using extrusion pins so that they adhere to the movable mold when the mold is opened. It was out of the mold. For this reason, the product removed from the die-casting mold has solidified material adhered to it in the runner, which has the drawback of requiring a lot of effort in post-processing work and increasing costs.

``Purpose of the present invention'' In view of the above-mentioned conventional drawbacks, the present invention is capable of automatically separating the product from the solidified material in the runner when opening the mold, thereby facilitating post-processing work. To obtain the die casting mold.

"Means for Achieving the Object of the Present Invention" The present invention includes a fixed mold, a movable mold that is provided on the fixed mold so as to be able to close and open the mold, and a combination of the movable mold and the fixed mold. A cavity for casting the product formed in between is formed so that the product adheres to the movable mold when the mold is opened, and a cavity formed in the fixed mold that guides the molten metal from the molten metal supply device into the cavity and solidifies it there. a runner formed to adhere to the fixed mold when the mold is opened; a product extrusion device that extrudes the cast product adhering to the movable mold and removes it from the movable mold when the mold is opened; It is characterized by comprising an extrusion device that extrudes the material solidified in the runners attached to the mold when the mold is opened, and removes it from the fixed mold.

"Embodiments of the present invention" The present invention will be described in detail below with reference to embodiments shown in the drawings.

In the embodiments shown in FIGS. 1 to 5, reference numeral 1 denotes a stationary mold fixed to a mold mounting frame (not shown) or the like. Reference numeral 2 denotes a movable mold which is movably attached to the mold mounting frame (not shown) or the like such that the mold can be clamped and opened to the fixed mold 1, and this movable mold 2 has a movable mold which can slide left and right. Slide cores 3, 3 are provided. 4 is the fixed mold 1;
This is a cavity formed between the movable mold 2 and the slide cores 3, 3 for casting and molding the product 5, and this cavity 4 is formed so as to adhere to the movable mold 2 when the mold is opened.

Reference numeral 6 denotes a runner that guides molten metal from a molten metal supply device (not shown) formed in the fixed mold 1 into the cavity 4, and this runner 6 carries the molten metal 7 that is solidified in the runner 6 when the mold is opened. is formed so as to adhere to the fixed mold 1. 8, 8 are inclined pins for sliding slide cores 3, 3 slidably provided in the movable mold 2 in the mold opening direction when the movable mold 2 fixed to the fixed mold 1 is opened; The inclined pins 8, 8 are inserted into the inclined pin insertion holes 9, 9 of the slide cores 3, 3.

Reference numeral 10 denotes a product extrusion device provided in the movable mold 2, and the product extrusion device 10 has a communication hole 11 formed in the movable mold 2 that communicates with the cavity 4, and is slidable into the communication hole 11. It consists of an inserted ejector pin 12 and a moving device 13 that closes the communication hole 11 during mold clamping and moves the ejector pin 12 so as to push it into the cavity 4 after the mold is opened or during the latter half of the mold opening.

The moving device 13 may be a cylinder device using hydraulic pressure or air, or it may be moved automatically by the movement of the movable mold 2 when the mold clamping mold is opened, as shown in the drawing. A structure may also be used.

14 is an extrusion device provided in the fixed mold 1, and this extrusion device 14 has a plurality of communication holes 16 formed in the fixed mold 1 and communicating with the runner 6 and the overflow chamber 15, and a plurality of communication holes 16 formed in the fixed mold 1. An extrusion pin 17 is slidably inserted into the communication hole 16, and the extrusion pin 17 closes the communication hole 16 when the mold is closed, and the runner 6 and the overflow chamber 1 after the mold opening is completed or during the latter half of the mold opening.
5, and a push-out plate 18 connected to a cylinder device (not shown) that moves the push-out plate 18 so as to push it into the inside of the push-out plate 18.

Note that the extrusion plate 18 may have a structure in which it is automatically moved by the movement of the movable mold 2 instead of the cylinder device.

In the die-casting mold 20 having the above configuration, the movable mold 2 is connected to a movable mold actuating device (not shown).
As shown in FIG. 1, the fixed mold 1 is pressed with a predetermined pressing force to clamp the mold. Thereafter, as shown in FIG. 2, a molten metal supply device (not shown) is operated to force the molten metal into the cavity 4 from the runner 6. When the molten metal press-fitted into the cavity 4 has solidified, the movable mold actuating device (not shown) is operated as shown in FIG. 3, and the movable mold 2 is separated from the fixed mold 1. At this time, the product 5 molded in the cavity 4 adheres to the movable mold 2 and comes off from the fixed mold 1, and also the runner 6 and overflow chamber 15.
The solidified materials 7 and 21 adhere to the fixed mold 1 and are removed from the movable mold 2. That is, in this state,
The product 5, the solidified product 7 in the runner, and the solidified product 21 in the overflow chamber are separated, respectively. Further, as the movable mold 2 moves in the mold opening direction, the slide cores 3, 3 slide outward by the inclined pins 8, 8, and the slide cores 3, 3 are removed from the outer periphery of the product 5. .

Next, as shown in FIG. 4, the product extrusion device 10 and the extrusion device 14 are operated, and the product 5 is removed from the movable mold 2 by extrusion of the extrusion pin 12, and the product 5 that has solidified in the runner and the overflow The material 21 solidified in the chamber is removed from the fixed mold 1 by extrusion with the extrusion pin 17. Thereafter, the product extrusion device 10 and the extrusion device 14 are returned to their original states, and the movable mold actuating device (not shown) is activated to press the movable mold 2 against the fixed mold 1 with a predetermined pressing force. and tighten the mold. After that, the same operations as described above are sequentially repeated to cast and mold the product.

"Different Embodiments of the Present Invention" Next, different embodiments of the present invention shown in FIGS. 6 and 7 will be described. In the description of this embodiment, the same components as those in the embodiment of the present invention are given the same reference numerals and redundant explanations will be omitted.

The main difference between the embodiments shown in FIGS. 6 and 7 from the embodiments of the present invention is that the extrusion device 14
A is configured to operate in conjunction with the product extrusion device 10, and by configuring it in this way, a moving device for the extrusion device 14A is unnecessary. In addition, 22 and 22 are pressed against the extrusion pin 12 by the mold clamping of the movable mold 2, and the extrusion pin 17
It is an operating rod that positions the 23,2
3 always urges the operating rods 22, 22 in the direction of the movable mold 2, and when the mold is opened, the solidified material 7 in the runner and the solidified material 21 in the overflow chamber are transferred to the fixed mold 1.
This is a spring that can be pushed out further.

"Effects of the Present Invention" As is clear from the above explanation, the present invention has the following effects.

(1) The product adheres to the movable mold when the mold is opened, and the solidified material in the runner adheres to the fixed mold, so the product and the solidified material in the runner can be automatically separated when the mold is opened. can. Therefore, post-casting work is only a matter of sorting the products, which can be done easily.

(2) According to (1) above, post-work can be done efficiently and in a short time, so costs can be reduced.

(3) Since the structure is simple, it can be implemented at low cost.

(4) Since only the die-casting mold needs to be improved, it can be carried out easily.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention;
Figure 2 is a schematic cross-sectional view showing the state in which molten metal is press-fitted;
Figure 3 is a schematic sectional view showing the mold open state, Figure 4 is a schematic sectional view showing the product and solidified material removed from the mold, and Figure 5 shows the slide core and movable mold. FIGS. 6 and 7 are explanatory views showing different embodiments of the present invention. 1: Fixed mold, 2: Movable mold, 3: Slide core, 4: Cavity, 5: Product, 6: Runway, 7:
Solidified in runner, 8: Inclined pin, 9: Inclined pin insertion hole, 10: Product extrusion device, 11: Communication hole, 12: Extrusion pin, 13: Moving device, 14,
14A: Extrusion device, 15: Overflow chamber,
16: Communication hole, 17: Extrusion pin, 18: Extrusion plate, 20: Die-casting mold, 21: Solidified in overflow chamber, 22: Operating rod, 23:
spring.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A fixed mold, a movable mold that is provided on the fixed mold so that the mold can be opened when the mold is clamped, and a movable mold that is movable when the mold is opened between the movable mold and the fixed mold. A cavity for casting the product is formed so that the product adheres to the mold, and a cavity is formed in the fixed mold to introduce the molten metal from the molten metal supply device into the cavity, and the solidified material is transferred to the fixed mold when the mold is opened. A runner formed to adhere to the mold; a product extrusion device that extrudes the cast product adhered to the movable mold when the mold is opened and removed from the movable mold; and a runner adhered to the fixed mold. What is claimed is: 1. A die-casting mold comprising: an extrusion device which extrudes the solidified material when the mold is opened and removes it from the fixed mold. 2. The die-casting mold according to claim 1, wherein the product extrusion device and the extrusion device are configured to be operated by a mold opening operation of a movable mold.