JPH04112018A - Multiple molding device - Google Patents

Abstract

PURPOSE:To release an article smoothly by providing an opening and closing pin that acts to open and close a resin conduit in a stationary mold, and also movably providing a driving pin that serves to move a communicating pin, an interconnecting pin that serves to move the opening and closing pin in the mold opening and closing direction, and a moving pin in the mold opening and closing direction. CONSTITUTION:The spaces among a stationary mold 10, an intermediate mold 20, and a movable mold 30 are closed, and the piston rod 212 of a hydraulic cylinder 213 is advanced, and then a communicating pin 208 and a driving pin 211 are moved in the right direction via communicating plates 210, 209, so that a communicating pin 112 is pressed to the side of a stationary securing plate 100 and then an opening and closing pin 111 moves to the side of the stationary securing plate 100. A stationary side resin conduit 114 is opened and thus an intermediate side resin conduit 207 is so communicated that the molten resin supplied from the nozzle of an injection molding machine mounted on a sprue bush 105 is filled in each cavity. After filling, a rod 212 is withdrawn so as to interrupt the outlet at the side of the intermediate mold 208 of the stationary side resin conduit 114 and the inlet at the side of the stationary mold 10 of the intermediate side resin conduit 207, thus the article cures and each mold is opened thereafter. Since respective pins 111, 112, 208, 211 do not project therefrom, mold releasing of the article becomes smooth thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multi-molding mold device having a plurality of product mating surfaces and configured to open each of these product mating surfaces to take out a product.

[Conventional technology]

Conventionally, in this type of multi-molding mold equipment, an intermediate mold was interposed between the fixed mold and the movable mold, and a sprue bush was installed from the fixed mounting plate of the fixed mold to the manifold in the intermediate mold. The molten resin that has passed through the sprue bush of the bracket and the inside of the manifold flows into the cavity formed at each product mating surface (parting line) between the intermediate mold and the fixed mold and between the intermediate mold and the movable mold. is being supplied to.

[Problem to be solved by the invention]

By the way, in the above-mentioned conventional multi-molding mold device, when opening the mold and taking out the product inside the cavity by opening the space between the fixed mold and the intermediate mold, a large diameter mold is inserted between the fixed mold and the intermediate mold. There was a problem in that the sprue was exposed and the product became an obstacle, making it difficult to remove the released product from the mold.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to prevent the large diameter stubble noche from being exposed when the mold is opened, which is an obstacle to removing the product. It is an object of the present invention to provide a multi-molding mold device which can release and take out products extremely smoothly and reliably.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a resin passage formed between a fixed mold and an intermediate mold, a communicating passage in the resin passage in the intermediate mold, and a resin passage between the fixed mold and the intermediate mold. A communication pin that communicates and blocks the resin passage is provided movably in the mold opening/closing direction, and an opening/closing pin that opens and closes the resin passage in the fixed mold is provided in the fixed mold opposite to the communication pin. A driving pin that is movable in the opening/closing direction and moves the communicating pin parallel to the communicating pin; or an interlocking pin that is provided in the mold opening/closing direction and moves the opening/closing pin parallel to the opening/closing pin. It is provided so as to be movable in the mold opening/closing direction, facing the drive pin.

[Effect]

In the multi-molding mold device of the present invention, the communication pin and the opening/closing pin are moved to the fixed mold side by the driving pin, and the resin passages of the fixed mold and intermediate mold are communicated through the communication path of the communication pin. At the same time, the communicating pin is returned to the intermediate mold by the drive pin to block the resin passage in the intermediate mold, and the opening/closing pin is moved by the interlocking pin to close the resin passage in the fixed mold to open the mold.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 and 2.

Reference numeral 10 in the figure is a fixed mold, and an intermediate mold 20 is provided to be openable and closable with respect to the fixed mold 10'.
A movable mold 30 is provided so as to be openable and closable with respect to the movable mold 30.

The fixed mold 10 includes a fixed mounting plate lOO provided with a locating ring lO' Oa, and a first mounting plate lOO attached to the fixed mounting plate 100. The second fixed receiving plates 101 and 102, the fixed mold plate 103 attached to the second fixed receiving plate 102, and the first fixed receiving plates 101 and 102, and the fixed mold plate 103 attached to the second fixed receiving plate 102. A fixed hollow body 104 is installed inside the second fixed receiving plate 101, 102 and the fixed mold plate 103, and a stub tube, which is installed inside the fixed mounting plate 100 and attached to the fixed hollow body 104 by a bolt 105a. 105, a filter 106 attached to the fixed hollow body 104 side in this sprue bush 105, and a pair of filters provided in a cavity 107 formed inside the fixed hollow body 104 so as to be movable in the mold opening/closing direction. mounting plates 108 and 109, a spring 110 that urges these mounting plates 108 and 109 toward the intermediate mold 20, and bases mounted on the mounting plates 108 and 109, respectively, and moving toward and away from the intermediate mold 20. The main components are an opening/closing pin 111 and an interlocking pin 112, and a coil heater 113 provided on the outer periphery of the fixed hollow body 104. A fixed-side resin passage 114 is formed passing through the sproop non-yu 105 and the fixed hollow body 104, and the intermediate mold 20 side of this fixed-side resin passage 114 is opened and closed by the opening/closing pin 111. It has become. Further, the tip of the interlocking pin 112 is adapted to protrude and retract from the fixed hollow body 104.

The intermediate mold 20 includes an intermediate member 200 with a manifold 200a mounted therein, and a fixed mold 1 of this intermediate member 200.
a first intermediate receiving plate 201 and a first intermediate template 202 attached to the 0 side; a second intermediate receiving plate 203 and a second intermediate template 204 attached to the movable mold 30 side of the intermediate member 200; An intermediate hollow body 205 installed inside the first intermediate mold plate 202 and the first intermediate receiving plate 201 and having one end in contact with the manifold 200a, a coil heater 206 provided on the outer periphery of this intermediate hollow body 205, and the above-mentioned intermediate hollow body 2
05 and an intermediate resin passage 207 formed in the manifold 20Oa, an iLl pin 208 inserted through the intermediate resin passage 207 and the intermediate member 200, and a connecting plate 209, 210 connected to the base of the communicating pin 208. The driving pin 211 is attached and inserted into the intermediate member 200 and the intermediate hollow body 205, and the piston mouth/nod 212 is connected to the connecting plate 210, and the second intermediate receiving plate 203 and the second intermediate mold plate 204 are connected to each other. It is mainly composed of an internal hydraulic cylinder 213. And the above communication pin 2
A reduced diameter portion is formed from the distal end side to the proximal end side of 08, and this reduced diameter portion is used as the communication path 214. Furthermore, when the mold is closed, the communicating pin 208 is arranged to face the opening/closing pin 111 with a slight clearance, and the intermediate resin passage 207 is communicated with and blocked by the tip of the communicating pin 208. It has become. Further, the driving pin 211 is brought into contact with the tip end surface of the interlocking pin 112 when the mold is closed.

The movable mold 30 is mainly composed of a movable mold plate 300 and a movable receiving plate and a movable mounting plate (not shown). Cavities for products are formed between the fixed mold plate 103 and the first intermediate mold plate 202 and between the second intermediate mold plate 2゜4 and the movable mold plate 300, respectively. Surface (parting line') P, L,
In addition, molten resin is supplied to each of the cavities through an intermediate resin passage 207 of the manifold 200a.

When molding a product in each cavity using the multi-molding mold apparatus configured as described above, first, the fixed mold 10. In the clamped state in which the intermediate mold 2o and the movable mold 30 are mutually closed, the piston opening of the hydraulic cylinder 213 and the door 2
12 is moved forward and the communication pin 208 and drive bin 211 are moved in the mold opening/closing direction (to the right in FIGS. 1 and 2) via the connecting plates 210 and 209, so that they come into contact with the drive bin 211. The interlocking pin 112 is pressed toward the fixed mounting plate 100, and the opening/closing bin 111 also moves toward the fixed mounting plate 100 via the mounting plates 108 and 109 against the biasing force of the spring 110.

As a result, the fixed side resin passage 114, which had been blocked by the tip of the opening/closing bottle 111, is opened, and the intermediate resin passage 207, which had been blocked by the tip of the communication pin 208, is now communicated. The molten resin supplied from the nozzle of the injection molding machine attached to the sprue bush 105 passes through the fixed side resin passage 114, the communication passage 214 of the communicating pin 208, and the intermediate side resin passage 207, and then reaches each intermediate receiving plate 201, 2.
03, each cavity is filled through the interior of each intermediate mold plate 202, 204.

Next, when the filling of the molten resin into each cavity is completed, the piston rod 212 of the hydraulic cylinder 213 is retreated, and the communicating pin 2 is inserted through the connecting plates 210 and 209.
08 and the drive bin 211 are moved to the movable mold 30 side.

As a result, until now the drive bin 211 has fixed the mounting plate l.
The interlocking pin 112 that was pressed toward the oo side is now attached to the mounting plate 10.
8 and 109, and is urged by the spring 110 to move toward the movable mold 30 together with the drive bin 211. Therefore, the mounting plate 108 is attached to the interlocking pin 112.
, 109, the opening/closing bin 111 also moves following the movement of the communication pin 208. As a result, the outlet of the fixed resin passage 114 on the intermediate mold 20 side is closed by the tip of the opening/closing bottle 111, and the entrance of the intermediate resin passage 207 on the fixed mold 10 side is blocked by the tip of the communicating pin 208. In this state, when the product in each cavity has cooled and solidified, the fixed mold 10. The intermediate mold 20 and the movable mold 30 are opened, and the product is released and taken out. In this case, when the mold is opened, the opening/closing bin 111. Each resin passage 114, 207 is closed by the communication pin 208, preventing resin leakage, and each pin 111, 112, 208.2 is connected between the fixed mold 10 and the intermediate mold 20.
Since No. 11 does not protrude, it does not become an obstacle to demolding or taking out the product.

Note that a fluid pressure cylinder may be provided in place of the spring 110, but since the inside of the fixed hollow body 104 becomes high temperature, it is desirable to use the spring 110.

〔Effect of the invention〕

As explained above, the present invention includes a resin passage formed between a fixed mold and an intermediate mold, a communicating passage in the resin passage in the intermediate mold, and a resin passage between the fixed mold and the intermediate mold. A communication pin that communicates with and blocks the passages is provided movably in the mold opening/closing direction, and is provided on the fixed mold, and is provided with an opening/closing pin that opens and closes the resin passage in the fixed mold, or an opening/closing pin that opens and closes the resin passage in the fixed mold, or is provided opposite to the communicating pin in the mold opening/closing direction. A driving pin for moving the communicating pin is provided in the mold opening/closing direction parallel to the communicating pin, and an interlocking pin for moving the opening/closing pin parallel to the opening/closing pin. Since it is provided so as to be movable in the mold opening/closing direction opposite to the driving pin, the communicating pin and the opening/closing pin are moved to the fixed mold side by the driving pin, and the resin passages of the fixed mold and intermediate mold are connected to the communicating pin. At the same time, the communicating pin is returned to the intermediate mold by the drive pin, the resin passage in the intermediate mold is blocked, and the opening/closing pin is moved by the interlocking pin to open the resin passage in the fixed mold. By closing the mold and opening the mold, when the mold is opened, there is no need to expose the large-diameter spoop or yut as in the conventional method, and there is no obstacle to removing the product, and it is extremely smooth. Moreover, the product can be reliably released from the mold and taken out, and resin can be easily supplied to the cavity when the mold is clamped, so that problems such as resin leakage do not occur.

[Brief explanation of the drawing]

Figures 1 and 2 show one embodiment of the present invention.
The figure is a sectional view, and FIG. 2 is a sectional view of the main part. 10...Fixed type, 20...Intermediate type, P, L
...Product mating surface (parting line), 111.
... Opening/closing pin, 112... Interlocking pin, 114... Fixed side resin passage 207... Intermediate side resin passage, 208...
Communication pin, 211... Drive pin, 214... Communication path.

Claims (1)

[Claims] In a multi-molding mold device having a plurality of product mating surfaces, opening each of these product mating surfaces to take out the product, and forming a resin passage between the fixed mold and the intermediate mold, the intermediate mold A communication pin is provided in the resin passageway in the mold, and is movable in the mold opening/closing direction, and has a communication passage and communicates and blocks the resin passages of the fixed mold and the intermediate mold.
Further, an opening/closing pin for opening and closing the resin passage in the fixed mold is provided on the fixed mold so as to be movable in the mold opening/closing direction opposite to the communicating pin, and the communicating pin is provided in parallel to the communicating pin. A driving pin for moving the opening/closing pin is provided in the mold opening/closing direction, and an interlocking pin for moving the opening/closing pin is provided in parallel to the opening/closing pin so as to be movable in the mold opening/closing direction opposite to the driving pin. Features a multi-molding mold device.