JPH0361518A - Mold fitting device in injection molding machine - Google Patents

Abstract

PURPOSE:To eliminate the need for standarization of a mold supporting plate and to utilize an existing mold by equipping both a first fitting and a second fitting which have the mutually abutting tapered faces and equipping a means for relatively moving both fittings along the tapered faces. CONSTITUTION:The title mold fitting device is equipped with both a first fitting 12 fixed to a mold supporting plate 8 by bolts 11 and a second fitting 18 fixed to die clamps 9. The first fitting 12 is constituted of a rodlike body and the outward tapered faces 12a, 12b are formed to the right and left ends thereof. On the other hand, the second fitting 18 has a pair of wedge type members 13a, 13b provided movably right and left in the positions correspondent to the tapered faces 12a, 12b. The wedge type members 13a, 13b of the second fitting 18 are formed by tilting the tapered faces 13a, 13b so that the central side is made low. The first fitting 12 is provided so as to be energized to the central side along the inclination thereof. Therefor positioning of the molds 3, 4 can also be performed by a regulating mechanism 10 at a time for inserting the molds 3, 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a mold mounting device for mounting a mold at a predetermined position in an injection molding machine.

(Prior art) Conventionally, a molding material that has been heated and fluidized in a heating cylinder is injected into a mold under high pressure, cooled and solidified or hardened therein, and then the mold is opened to take out the molded product. The injection molding machine is equipped with a mold clamping device and an injection device, and the mold clamping device includes a fixed die plate and a movable die plate.

Then, when the mold clamping cylinder reciprocates the movable die plate along the tie bar, the fixed mold and the movable mold come into contact with and separate from each other.

Further, the injection device includes a reciprocating nozzle that heats and melts and injects the molding material, ie, resin, in the hopper, and the molten resin is injected into the mold cavity from the nozzle. On the other hand, the molded product is designed to fall and be discharged from the discharge port below the machine stand.

In the above-mentioned injection molding machine, the fixed mold and the movable mold are respectively attached to the fixed die plate 1 and the movable die plate, so that both molds are clamped via both die plates. It has become. Therefore, it is necessary that the nozzle insertion port provided in the fixed mold be provided at a position that accurately corresponds to the nozzle insertion port provided in the fixed die plate.

Therefore, when a fixed die is attached to a fixed die plate, the fixed die is attached to a predetermined die support plate,
The mold support plate is attached to a fixed die plate via a die clamp.

That is, by selecting a predetermined mold support plate, the position of the fixed mold is adjusted so that the position of the nozzle insertion port of the fixed mold corresponds to the position of the nozzle insertion port of the fixed die plate. .

(Problem to be Solved by the Invention) However, in the mold mounting device of the above-mentioned +a-power injection molding machine, various It is necessary to prepare a mold support plate, and if you try to standardize the mold support temporary, it is necessary to standardize the position of the nozzle insertion hole of the fixed mold, so it is not possible to use the existing mold. It disappears.

Therefore, there has been proposed a system in which a liner of a predetermined size is interposed at the lower end of the stationary mold, and the position of the stationary mold is adjusted by the liner (Japanese Utility Model Publications No. 176610/1982 and No. 176611/1989). reference).

However, according to this method, it is necessary to manufacture six or more liners for each type of mold or type of injection molding machine, and to select an appropriate liner, resulting in an increase in cost.

Furthermore, there is a method in which the entire die clamp is supported so as to be movable in the vertical direction, and the die clamp is moved up and down depending on the type of mold or type of injection molding machine. The molding machine becomes larger and the manufacturing cost increases.

The present invention solves the problems of the conventional mold mounting device of an injection molding machine, and has easy maintenance and management, low manufacturing cost, and
The purpose of the present invention is to provide a mold mounting device for an injection molding machine that does not require standardization of mold support plates, allows existing molds to be used as they are, and is compatible with various molding machines. shall be.

(Means for Solving the Problems) To achieve this, the present invention provides a mold mounting device for an injection molding machine that mounts a mold by attaching a mold to a mold support plate and attaching the mold support plate to a die plate. The die clamp has a die clamp fixed to the die plate, and an adjustment mechanism disposed between the die clamp and the mold support plate to support the mold support plate in a vertically movable manner.

The adjustment mechanism includes a first metal fitting and a second metal fitting having tapered surfaces that abut each other, and temporarily fixes the first metal fitting to the mold support and the second metal fitting to the die clamp. A means for relatively moving both metal fittings along the tapered surface is provided.

(Function) According to the present invention, in the mold mounting device for an injection molding machine, the mold is mounted by temporarily mounting the mold as a mold support and attaching the mold support plate to the die plate as described above. The die clamp is fixed to the die plate, and the adjustment mechanism is disposed between the die clamp and the mold support plate and supports the mold support plate in a vertically movable manner. a first metal fitting and a second metal fitting having tapered surfaces that abut, the first metal fitting being attached to a mold support plate;
Since the second metal fitting is fixed to the die clamp and also has a means for relatively moving both metal fittings along the tapered surface, the mold support plate is moved up and down by the adjustment mechanism, and the fixed mold is fixed. The position of the nozzle insertion port can be made to correspond to the position of the nozzle insertion port of the fixed die plate.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

Fig. 1 is a side view of a mold mounting device of an injection molding machine showing an embodiment of the present invention, Fig. 2 is a cross-sectional view taken along line A-A in Fig. 1, and Fig. 3 is a mold of the injection molding machine of the present invention. FIG. 4 is a side view of the adjustment mechanism of the mounting device.

In the figure, 1 is a fixed die plate arranged on the fixed platen side, 2 is a movable die plate arranged on the movable platen side, and both are arranged facing each other.

3 is a die plate l fixed by a mold mounting device to be described later.
4 is a movable mold that is mounted on the movable die plate 2 by a similar mold mounting device. Molten resin material is injected from a nozzle 5 into a cavity formed between both molds 3 and 4, and is cooled to form a molded product.

For this reason, a nozzle insertion port (not shown) is formed in the fixed mold 3 at a position corresponding to the nozzle 5, and a nozzle insertion port 6 is also formed in the fixed die plate 1 at a position corresponding to the nozzle 5.

Both molds 3 and 4 are fixed to a mold support plate 8. The mold support plate 8 has different dimensions depending on the type of molds 3 and 4 or the type of injection molding machine.

Therefore, when using the mold support plate 8 of the various dimensions mentioned above, the nozzle insertion opening of the fixed mold 3 is connected to the fixed die plate l.
An adjustment mechanism 1O is provided to make the position of the mold 3.4 movable in order to correspond to the nozzle insertion port 6 of the mold 3.4.

The adjustment 41 structure 10 is connected to the mold support plate 8 as shown in FIG.
The first metal fitting 12 is fixed by the pole [1] and the second metal fitting 18 is fixed to the die clamp 9 (see Fig. 2).
have. The first metal fitting 12 is constituted by a rod-shaped body, and as shown in the figure, outwardly tapered surfaces 12a and 12b are formed at the left and right ends thereof.

On the other hand, the second metal fitting 18 has the tapered surfaces 12a, 12
It has a pair of wedge-shaped members 13a and 13b which are arranged to be movable left and right at positions corresponding to b.

The wedge-shaped members 13a and 13b are connected to the tapered surface 12.
It has tapered surfaces 13a and 13b that are formed facing the center at positions where they abut against the surfaces a and 12b.

The wedge-shaped members 13a, 13b have screw holes formed therein so that the screws 15 can be engaged with each other and passed through the wedge-shaped members 13a, 13b. A head 16 is formed at the tip of the screw 15. Left and right wedge-shaped members 13a that rotate the screw 15 by rotating the head 16 and engage with it;
13b can be placed close to the center or separated from the left and right ends.

Therefore, the screw 15 is attached to the left side 15a and the right side 15a.
The winding directions of the screws are reversed in FIG. 1B, and the support member 18 rotatably supports the screws. Then, when the screw 15 is rotated in the six directions of the arrows, the left and right wedge-shaped members 13a,
13b moves toward the center in the direction of arrow C, and the first metal fitting 12 moves in the direction of arrow E in response thereto. On the other hand, when the screw 15 is rotated in the direction of arrow B, the left and right wedge-shaped members 13a and 13b move toward the left and right ends as shown by the arrow, and the first metal fitting 12 follows this and moves in the direction of arrow F. .

Therefore, it is possible to move the mold support plate 8 in the vertical direction simply by rotating the screw 15 in either direction. Then, rotate the screw 15 to
is set at a predetermined position, the nut 17 is tightened to the right flange 18a of the second metal fitting 18, thereby preventing the screw 15 from rotating unnecessarily.

Further, as described above, the wedge-shaped members 13a, 13b of the second metal fitting 18 are formed with tapered surfaces 13a, 13b inclined so that the center side is lower, and the first metal fitting I2
is arranged so as to be biased towards the center along the inclination. Therefore, the adjustment mechanism 10 can also be used to position the molds 3 and 4 when the molds 3 and 4 are inserted.

Note that 19 is a stopper located at the left end of the screw 15 to prevent the screw 15 from coming off. In addition, in Figure 2, 21
is a bottle provided between the first metal fitting 12 and the second metal fitting 18 to receive the mold opening force when opening the mold, but it does not necessarily have to be composed of a pin, and it may be formed by a groove or the like to receive the mold opening force. You can also do this.

Mf, -122 is a stopper for suppressing movement of the second metal fitting 18, and 23 is a guide roller.

Furthermore, in FIG. 1, 25 is a locate ring.

Until now, when centering a mold, the opening trick 2
However, since the adjustment mechanism 10 is provided, the locating ring 25 can be used to center the mold.

Note that the present invention is not limited to the above embodiments,
Various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

(Effects of the Invention) As explained above, according to the present invention, the mold of an injection molding machine is equipped with a mold by attaching a mold to a mold support plate and attaching the mold support plate to a die plate. The mounting device includes a die clamp fixed to the die plate, and an adjustment mechanism disposed between the die clamp and the mold support plate to support the mold support plate in a vertically movable manner. The adjustment mechanism includes a first metal fitting and a second metal fitting that have tapered surfaces that abut each other, and fixes the first metal fitting to the mold support plate and the second metal fitting to the die clamp, and fixes the first metal fitting to the mold support plate and the second metal fitting to the die clamp. The adjustment mechanism moves the mold support plate up and down to change the position of the nozzle inlet of the fixed die to the nozzle inlet of the fixed die plate. It can be made to correspond to the position of

Therefore, there is no need to standardize the mold support plate, and existing molds can be used. Furthermore, by standardizing the dimensions of the first metal fitting, the adjustment mechanism can be shared by various molds.

[Brief explanation of drawings]

Fig. 1 is a side view of a mold mounting device of an injection molding machine showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-^ in Fig. 1, and Fig. 3 is a mold of the injection molding machine of the present invention. FIG. 4 is a side view of the adjustment mechanism of the mounting device. l... Fixed die plate, 2... Movable die plate, 3... Fixed mold, 4... Movable mold, 8... Mold support plate, 9... Die clamp, 10.・Adjustment mechanism,】
2...First metal fitting, 13...Second metal fitting, 15...
·screw.

Claims (1)

[Scope of Claims] A mold mounting device for an injection molding machine that mounts a mold by attaching a mold to a mold support plate and attaching the mold support plate to a die plate, comprising: (a) a mold mounted on the die plate; a fixed die clamp; (b) an adjustment mechanism disposed between the die clamp and the mold support plate to support the mold support plate in a vertically movable manner; (c) the adjustment mechanism: a first metal fitting and a second metal fitting having tapered surfaces that abut each other; (d) the first metal fitting is fixed to the mold support plate and the second metal fitting to the die clamp; and (e) the above-mentioned A mold mounting device for an injection molding machine, comprising means for relatively moving both metal fittings along a tapered surface.