JPH0716880A - Mold equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] The present invention relates to a mold device including a fixed mold and a movable mold that are assembled so as to be openable and closable via guide pins, and an object thereof is to require complicated work during setting. Without doing so, it is to prevent accidentally the opening operation of the mold under the vibration condition. According to the present invention, in the fixed die 10, the clamp lever 31 is freely moved between a locked position for engaging the guide pin 22 and an unlocked position separated from the guide pin 22 when the die is closed. And a compression spring 33 for urging the clamp lever 31 to occupy the lock position. Further, when the fixed mold 10 is set on the die 100, the clamp lever 31 is urged by the compression spring 33. An operation block 35 that moves the lock block 35 to the unlock position is provided in association with the clamp lever 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold device, and more particularly, to a mold device including a fixed mold and a movable mold which are openably and closably mounted via guide pins.

[0002]

2. Description of the Related Art When a conventional mold apparatus of this type is mounted on a vehicle for transportation, the fixed mold and the movable mold are separated by vibration, or the fixed mold and the movable mold are slightly separated from each other. In order to prevent damage due to repeated opening and closing, a plurality of fixed molds B and movable molds C in the mold apparatus A are fixed to each other via coupling plates D and D as shown in FIG. There is.

[0003]

By the way, in the above-mentioned conventional configuration, when the mold apparatus A is set on the die of the injection molding machine or the like, it is necessary to remove the plurality of connecting plates D, D, respectively. Further, in order to remove the connecting plate D attached to the back side of the mold apparatus A, it has to go around the back of the apparatus, which complicates the work. Also,
If the connecting plate D is forgotten to be removed when the mold device A is set, the mold may be damaged during operation, and if the connecting plate D is forgotten to be attached when the mold device A is transported, It cannot prevent the damage of the mold due to the vibration inside. In view of the above situation, it is an object of the present invention to provide a mold apparatus capable of reliably preventing careless opening operation of a mold under vibration conditions without requiring complicated work during setting. .

[0004]

In view of the above, in the mold device according to the present invention, attention is paid to the fact that the guide pin provided on the movable mold is inserted into the fixed mold, and the mold is closed to the fixed mold. The clamp member is provided so as to freely move between the locked position that engages with the guide pin and the unlock position that is separated from the guide pin in the closed state, and the clamp member is urged to occupy the locked position. By providing a biasing means, and further providing a lock releasing member linked to the clamp member for moving the clamp member to the unlock position against the biasing force of the biasing means when the fixed die is set in the die. , Achieves the above purpose.

[0005]

According to the above construction, when the fixed die and the movable die are detached from the die in a closed state, the guide pin provided on the movable die is engaged with the clamp member urged by the urging means. As a result, the fixed die and the movable die are fixedly locked to each other, while when the fixed die is set on the die, the clamp member is moved to the unlocked position via the lock release member, and The lock with the movable type will be released.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing one embodiment. 1 to 5 show an example in which the mold apparatus according to the present invention is applied to an injection molding mold. The injection molding mold 1 includes a fixed mold 10 and a movable mold 20.
It has and.

As shown in FIG. 1, the movable mold plate 21 of the movable mold 20 has guide pins 22 extending in the right direction in the drawing.
Is fixed, while the fixed-side mold plate 1 of the fixed mold 10 is fixed.
1, a guide pin bush 12 is fixedly provided so as to extend in the left-right direction in the drawing.

The guide pin 21 is slidably inserted into the guide pin bush 11, so that the fixed die 10 and the movable die 20 are assembled so as to be openable and closable with respect to each other.

In the figure, reference numeral 13 is a mounting plate, 14 is a locate ring, 15 is a sprue bush, and 2
3 is a mounting plate, 24 is a receiving plate, 25 is an ejector pin, 26
Is the return pin.

An engaging groove 22a is formed over the entire circumference at the end of the guide pin 22 (right end in FIG. 1), while the fixed-side mold plate 11 of the fixed mold 10 has the above-mentioned structure. The casing 30 is attached so as to face the end of the guide pin 22.

The casing 30 has a substantially cylindrical shape as shown in FIG. 2 to FIG. 4, in which clamp levers 31, 31 as clamp members sandwich the end portion of the guide pin 22. It is arranged opposite.

Each of the clamp levers 31 has a claw portion 31a and a lever portion 31b, and swings via a shaft 32 between a locked position indicated by a solid line in the figure and an unlocked position indicated by a broken line. The compression spring 33 is movably supported and is biased toward the lock position by a compression spring 33 as a biasing means interposed between the compression spring 33 and the casing 30. Reference numeral 32A in FIG. 4 is a spacer.

As shown in FIG. 2, a lid plate 34 is screwed into the opening of the end portion (the right end portion in the drawing) of the casing 30, and a through hole 34A is formed in the center of the lid plate 34. And the through port 34
Around A, a plurality of tool holes 34a are formed.

On the other hand, as shown in FIG. 2, a spherical operation block 35 is interposed between the lever portion 31b of each clamp lever 31 and the lid plate 34, and this operation block 35 is provided. As shown by the solid line in the figure, it is free from the position where a part is projected outward from the through hole 34A of the lid plate 34 toward the inside of the casing 30 (left side in the figure) as shown by the chain line. Can be moved to.

The casing 30 and the casing 30
The lock unit 50 is configured by the clamp lever 31, the compression spring 33, the lid plate 34, the actuation block 35, and the like that are housed and installed inside.

As shown in FIG. 2, the lock unit 50 has a structure in which the flange 30a of the casing 30 is fixed to the fixed-side mold plate 11 with bolts 36, so that the fixed mold 1 is formed.
It is detachably attached to 0, and can be easily replaced in the case of malfunction or the like.

As shown in FIG. 1, when the mold apparatus 1 is removed from the injection molding machine, the compression spring 33 is used.
The clamp levers 31 are urged toward each other by the lever block 31b as shown in FIG. It occupies the locked position shown by the solid line while pushing it to the position that projects outward.

By occupying each of the clamp levers 31 at the lock position, the claw portion 31 of each clamp lever 31 is held.
a enters into the engaging groove 22a of the guide pin 22, whereby the guide pin 22 and each clamp lever 31 are engaged with each other.

As described above, when the mold apparatus 1 is detached from the die of the injection molding machine, the clamp provided on the fixed die 10 is fitted into the fitting groove 22a of the guide pin 22 provided on the movable die 20. Since the locking claws 31a of the lever 31 are engaged, the fixed mold 10 and the movable mold 20 are locked to each other immovably, so that the fixed mold 10 and the movable mold 20 can move even under vibration conditions such as transportation by a vehicle. Inadvertent opening of the mold 20 is prevented.

On the other hand, when the mold apparatus 1 is mounted on an injection molding machine (not shown), as shown in FIG. 2, the working block 35 is moved by the die 100 that is in close contact with the mounting plate 13 of the fixed mold 10. It is pushed into the position shown by the chain line.

When setting the mold apparatus 1 in the injection molding machine,
When the operation block 35 is pushed from the position shown by the solid line to the position shown by the chain line, the lever portion 31b of each clamp lever 31 is pushed to the left in the drawing,
As a result, each clamp lever 31 moves from the lock position shown by the solid line to the unlock position shown by the chain line.

When each of the clamp levers 31 moves to the unlocked position, the claw portion 31a of each clamp lever 31 is disengaged from the engaging groove 22a of the guide pin 22,
As a result, the guide pin 22 and each clamp lever 3
The engagement with 1 is released.

As described above, when the mold apparatus 1 is attached to the die 100 of the injection molding machine, each clamp lever 31 moves from the lock position to the unlock position based on the movement of the operation block 35, so that the fixed mold 10 is moved. Therefore, the mutual lock between the movable mold 20 and the movable mold 20 is released, and therefore, when the mold device 1 is set in the injection molding machine, a complicated work for unlocking is not required.

When it is necessary to split the fixed mold 10 and the movable mold 20 in a state where the mold apparatus 1 is not attached to the injection molding machine such as when the mold is modified, the lid plate 34 is attached. It is rotated by a tool fitted in the tool hole 34a, and as shown in FIG. 5, the inside of the casing 30 is screwed to the left in the drawing.

By doing so, each clamp lever 3
The lever portion 31b of No. 1 is pushed to the left in the figure, and each clamp lever 31 is occupied at the unlock position shown by the solid line,
When the claw portion 31a of each clamp lever 31 is disengaged from the engagement groove 22a of the guide pin 22, the lock between the guide pin 22 and each clamp lever 31 is released, and the fixed die 10 and the movable die 20 are broken. It becomes possible.

In the mold apparatus 1'shown in FIG. 6, instead of the compression spring 33 of the mold apparatus 1 described above, a tension spring 3 is attached to a pin 31A 'provided on each clamp lever 31'.
By extending 3 ', each clamp lever 3
1'is configured to be urged to the respective lock positions shown by the solid lines in the figure, and in the mold apparatus 1 ', instead of the spherical operation block 35 in the mold apparatus 1, the small diameter portion 35a is used. A working block 35 'having a large diameter portion 35b' and a large diameter portion 35b 'is employed.

The structure of the mold apparatus 1'other than the tension spring 33 'and the operation block 35' is basically the same as that of the mold apparatus 1 shown in FIGS. There is no change in the operation mode in which the fixed mold and the movable mold are locked / unlocked based on the attaching / detaching operation of the mold device to / from the molding machine.

Therefore, in the mold apparatus 1 ', as shown in FIG.
1 to 5, the elements having the same functions as those of the mold apparatus 1 shown in FIG.
, The detailed description of the mold apparatus 1 ′ will be omitted.

It is needless to say that the present invention can be effectively applied not only to the injection molding die shown in the embodiment but also to various die devices such as die casting die. .

[0030]

As described above in detail, in the mold apparatus according to the present invention, the fixed mold is provided with the clamp member that freely moves between the locked position and the unlocked position, and the clamp member is biased. And a lock release member for moving the clamp member to the unlock position against the biasing force of the biasing means when the fixed die is set on the die. When the fixed die and the movable die are removed from the die in a closed state, the clamp member is engaged with the guide pin provided on the movable die to lock the fixed die and the movable die, When the fixed die is set on the die, the clamp member is moved to the unlock position via the lock release member, and the lock between the fixed die and the movable die is released. That is, according to the mold apparatus of the present invention,
Since the locking and unlocking of the fixed mold and the movable mold is performed along with the attaching / detaching operation of the die device to / from the die,
It is possible to reliably prevent inadvertent opening of the mold under vibration conditions without requiring complicated work during setting.

[Brief description of drawings]

FIG. 1 is an overall side sectional view showing a mold device according to the present invention.

FIG. 2 is a side sectional view of a main part of a mold device according to the present invention.

FIG. 3 is a bottom view of essential parts showing a lock unit of the mold device according to the present invention.

4 is a sectional view taken along line XX of FIG.

FIG. 5 is a side sectional view of a main part of a mold device according to the present invention.

FIG. 6 is a side sectional view of a main part showing another embodiment of the mold device according to the present invention.

FIG. 7 is an overall side view showing a conventional mold device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Injection-molding die (molding device), 10 ... Fixed type, 12 ... Guide pin bush, 20 ... Movable type, 22 ... Guide pin, 22a, ... Engaging groove, 30 ... Casing, 31 ... Clamp lever ( Clamping member), 33 ... compression spring (biasing means), 34 ... lid plate, 35 ... operating block (lock releasing member), 50 ... locking unit, 100 ... die.

Claims (2)

[Claims] 1. A mold apparatus comprising a fixed mold and a movable mold, wherein the fixed mold and the movable mold are assembled in a freely openable and closable manner through a guide pin provided on the movable mold. A clamp member movably provided between a lock position that engages the guide pin and an unlock position that separates from the guide pin when the fixed mold and the movable mold are closed; A biasing means for biasing and occupying the locked position, and the clamp member provided in association with the clamp member, in a state where the fixed mold is set in the die,
A lock releasing member for moving the clamp member to an unlock position against the biasing force of the biasing means. 2. A lock unit comprising a casing detachably attached to the fixed mold, the clamp member provided on the casing, the urging means, and the lock release member. The mold apparatus according to claim 1, wherein: