JPH0796227B2 - Mold temporary clamp device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary clamping device used when mounting a die of a molding machine such as an injection molding machine.

[0002]

2. Description of the Related Art Conventional die attachment is performed by attaching the die to a movable platen, and then attaching the die to a fixed platen. Further, the fixing to the fixed plate is performed by bolting at four points or by providing clamps at four points on the left, right, upper and lower sides of the die mounting plate and individually fastening the clamps to the die.

Even when the molds are fixed in place, there is a slight misalignment between the molds, which may cause mold closing failure. Therefore, when the molds are mounted, the molds are first positioned relative to each other. There is a need.

This positioning is carried out on the mold on the side of the stationary platen, and most of them are loosened to some extent by tightening the mold with bolts or clamps, and the mold is temporarily clamped at a fixed position to the side of the mold. It is done after matching the mold after giving the flexibility of.

[0005]

In the temporary clamp for this positioning, it is difficult to tighten and tighten the mold, and if the tightening is too loose, the mold shifts too far below the fixed position and it becomes difficult to perform mold matching. When it is over-tightened, it is difficult for the mold to escape to the side, so biting occurs due to mold matching,
In some cases, the mold may be damaged.

It is also conceivable to use both the temporary clamp and the main clamp, but it is difficult to provide both of them on a mold placing board whose installation space is limited, and the work of removing the temporary clamp after the main clamp is performed while avoiding the mold. It is difficult to use because it requires time and effort and the mold replacement work is complicated.

The present invention was conceived in order to solve the above-mentioned problems of the prior art, and the purpose thereof is to facilitate provisional clamping of the fixed mold to the side of the fixed mold by the internal installation of the spring member. It is an object of the present invention to provide a new mold temporary clamping device that can be easily removed regardless of the mold.

The present invention according to the above-mentioned object is provided with a screw at the center.
Make a semi-circular recess at both ends of the required length seat plate with holes.
A mounting portion in which a pair of divided members are provided to form a lateral hole
The material is inwardly fixed by fixing only one side of the divided member to the seat plate.
On the inside of the seat plate where the screw holes are opened.
A case is provided and the operating rod is screwed into the screw hole.
It is projected on the outside of the seat plate, and its operating rod is touched to the handle on the side of the mold.
Make sure that the clamp member that is in contact with
A spring member that elastically presses outward is interposed and the guide
It is housed in a case and bolted.
It

[0009]

[Operation] In the above configuration, the temporary clamp device can be installed vertically on the side of the mold by fitting the attachment members into the upper and lower tie bars. After inserting the fixed mold from the lateral direction into the fixed plate at the fixed position, fix the seat plate to the tie bar on the side of the mold, and screw in the operating rod, the clamp member is pushed out through the spring member, The fixed mold is pressed while being in contact with the mold side part, and the mold side part on the insertion side is elastically pressed against the receiving member provided on the fixed platen.

Due to this pressing force, the fixed mold is temporarily clamped between itself and the receiving member, and since the temporary clamp has flexibility in the lateral direction, a slight misalignment of the fixed mold is caused by the mold alignment. It is corrected by the lateral relief, which results in automatic positioning. After positioning,
In this state, the clamp provided on the stationary platen can be used to permanently clamp the stationary mold to the stationary platen.

[0011]

1 is a thick seat plate formed slightly longer than the tie bar interval, and block-shaped mounting members 2 and 2 are integrally fixed to both ends thereof. The mounting members 2 and 2 are formed by bolting a pair of split members having semi-circular recesses, and the recesses allow the fitting members 2 and 2 to be fitted into tie bars or upper and lower shaft members protruding toward the fixed plate. It has holes 3.

Further, as shown in FIG. 2, a screw hole 4 is formed in the central portion of the seat plate 1, and a guide case 5 is vertically fixed to the inside of the seat plate where the screw hole 4 is opened. is there. In this guide case, a clamp member 7 having a block shape and a clamp groove 6 provided in the longitudinal direction on the end surface is screwed into the screw hole 4 and is rotatably provided on the outside of the seat plate with a bolt at the tip of the operating rod 8. It is attached and housed.

A bolt 9 for connecting the clamp member 7 and the operating rod 8 is screwed to a core 11 provided in the operating rod with a bolt 10, and a spring member 12 clamps one end around the connecting bolt. And the other end is provided in contact with the operating rod side.
Is constantly oppressed outward.

FIG. 3 shows a temporary clamped state of a fixed mold. The fixed platen 13 has clamps 14 which also function as guide plates in parallel above and below a mold mounting plate provided on the inner side surface, and between the guide plates. The fixed mold 15 can be inserted from the side. Also, on one side of the inner surface of the fixed board 13, a coupler 1 for temperature control is provided.
A die receiving member 17 made of a long block having 6 extending therethrough is vertically mounted.

The temporary clamping device is provided on the side opposite to the die receiving member 17, and the upper and lower tie bars 2 whose one end is connected to the fixing plate 13 are provided.
The mounting members 2 and 2 are inserted vertically over 9 and 29.

The fixed mold 15 and the movable mold 19 attached to the movable plate 18 (see FIG. 2) have circular recesses 21 and 22 on opposite surfaces thereof, which form a cavity 20 for CD molding. The recess 21 on the fixed mold side is the recess 22 of the movable mold 19.
It is formed by leaving the fitting peripheral edge 24 in the surface of the convex portion that fits in the peripheral edge 23 of the concave portion 21, and the stamper 25 is formed in the peripheral edge of the concave portion 21.
The holding ring 26 of is fitted.

Further, a coupler 27 is provided on the side of the fixed mold 15 on the insertion side, and a handle 28 is provided on the side of the push-in side so that the clamp 6 contacts the handle 28. Has become.

When contacting the temporary clamp of the fixed mold 15,
First, before inserting the fixed mold 15, the temporary clamping device is placed sideways in advance, and the clamp 14 is loosely placed. To insert the fixed mold 15, the upper and lower step portions 15a are fitted into the clamps 14 from the side of the temporary clamping device side as shown in FIG.
To the point where you approach.

Next, the position of the temporary clamping device is corrected to the side of the mold, and the operating rod 8 is rotated by the handle 8a to clamp the clamp.
The member 7 is brought into contact with the handle 28, and the clamp groove 6 is attached to the handle side.
Put the face . Further, when the spring member 12 is appropriately compressed by the rotation, the fixed mold 15 is pushed laterally via the handle 28.
To be done. The pressing force at this time is preferably such that it is suspended by the reaction force at the time of fitting the couplers 16 and 27, and an appropriate compression force is generated against the O-ring 16a.

Due to this pressing force, the fixed mold 15 is temporarily clamped between itself and the mold receiving member 17, and since the temporary clamp provides flexibility to the side, a slight misalignment is fixed by the mold alignment. It is corrected by the lateral escape of the mold, which results in automatic positioning. Further, after the positioning, the fixed mold 15 can be fully clamped to the fixed platen 13 by the clamp provided on the fixed platen side as it is.

Although the above embodiment has been described with respect to a fixed mold, the present invention is not limited to the temporary clamp of the fixed mold because the fixed mold can also be temporarily clamped. .

[0022]

As described above, according to the present invention, since the temporary clamping device is configured, it can be mounted on a support shaft or the like protruding from a tie bar or a fixed plate, and the mounting is simple and space-saving. Since it is not necessary, it is suitable as a temporary clamping device for a small mold that has a limited installation space for the clamp.

Further, since the mold is laterally elastically supported by the internally provided spring member, the mold has flexibility with respect to the side, which facilitates the positioning of the mold, and the clamp member is applied to the mold. Since they are only in contact with each other, there is no need to remove the mold after the main clamp, and the time required for mold replacement can be shortened as compared to the past.

Further, since the pressing force against the mold can be adjusted by adjusting the elastic force of the spring member by the rotation of the operating rod, it is easier to adjust than the temporary clamping by tightening the bolts. By using it together with the clamp on the mold platen, you can switch to the main clamp as a temporary clamp.
This has the advantage that no positional deviation occurs during the process.

[Brief description of drawings]

FIG. 1 is a perspective view of a temporary clamp device for a mold according to the present invention.

FIG. 2 is a plan cross-sectional view of a main part showing a temporary clamped state.

FIG. 3 is a front view of the stationary plate side.

[Explanation of symbols]

 1 seat plate 2 mounting member 3 lateral hole 4 screw hole 5 guide case 7 clamp member 8 operating rod 9 connecting bolt 10 bolt 11 core 12 spring member 13 fixing plate 14 clamp 15 fixing mold 17 mold receiving member 19 movable mold 28 grip

Claims (1)

[Claims] 1. A seat plate of a required length having a screw hole in the center thereof.
Pair a pair of split members with semi-circular recesses
Install the mounting member with a lateral hole formed on one side of the split member.
Only the chisel is fastened to the seat plate and facing inward, and the screw hole is opened.
A guide case is provided at the center of the inside of the seat plate.
, The operating rod is screwed into the screw hole, and is projected outside the seat plate.
A clamp member that comes into contact with the handle on the side of the mold is attached to the operating rod.
A spring part that constantly presses the clamp member outward between both sides
With the material intervening, and by accommodating it in the guide case, bolt
A temporary clamping device for a die, which is characterized by being attached .