JPH087972Y2 - Safety hook device in mold clamping device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety hook device in a mold clamping device such as a die casting machine and an injection molding machine.

[0002]

2. Description of the Related Art A safety hook device in a conventional mold clamping device will be described with reference to a toggle type mold clamping device shown in FIG. In the figure, a fixed die 12 and a movable die 1 are respectively attached to a fixed die plate 10 and a movable die plate 11.
3 is attached, and the movable die plate 11 slidably inserted into a plurality of tie bars 15 connecting between the fixed link housing 14 and the fixed die plate 10 is toggle mechanism 1.
6 is a toggle type mold clamping device which is connected via 6 and is clamped by a mold clamping cylinder 17 fixed to the link housing 14, which shows a mold open state.

Therefore, an actuator 18 such as an air cylinder is fixedly attached to the link housing 14, and a movable portion thereof is provided with a safety hook 19 so as to advance and retreat. 14, the safety hook 18 is slidably supported, and when the mold is open, the safety hook 18 is fitted into the notch 21 provided at the position of the guide bar 20 facing the safety hook 18. And
This is a safety device that locks the movement of the movable die plate 11 to prevent a mold closing accident due to a malfunction of the mold clamping cylinder 17.

[0004]

However, in the conventional safety hook device, as shown in FIG. 3, an actuator 18 such as an air cylinder is projected from the side surface of the link housing 14, and in particular, a solenoid valve direct connection type. Since the air cylinders are considerably protruded, there is a risk of accidentally colliding and damaging the molds at the time of transferring the mold.

Therefore, an object of the present invention is to provide a safety hook device capable of providing an essentially safe working environment by eliminating the above-mentioned protruding portion.

[0006]

In order to achieve the above object, the present invention provides a beam member fixed to an upper portion of a movable die plate and slidably installed on an upper surface of a link housing, and an actuator fixed to the link housing. A safety hook that is connected to a movable part and moves forward when it is in the middle of mold opening or in a mold open limit state to be fitted into a hole or notch formed in the beam member, and the beam that is movable by also using the beam member as a part of a framework. A safety hook device in a mold clamping device, which includes a member, the actuator, and a safety cover that covers the safety hook.

[0007]

[Operation] When the mold clamping device is in the mold open state, when performing a mold transfer operation, the actuator is operated in the hole or notch formed in the beam member integrated with the moving die plate to advance the safety hook. The movement of the movable die plate is locked by inserting it as a safety device.Because these movable beam members, actuators and safety hooks are covered by the safety cover, there is no protruding part and accidentally collide. It provides a safe working environment with essentially no risk of breakage.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a safety hook device according to the present invention will be described below in detail with reference to the drawings. For convenience of explanation, the mold clamping device will be described in the case of the toggle type mold clamping device as in the above-mentioned conventional example, and the same parts as those in FIG. It is not limited to the mold clamping device.

In FIG. 1, a beam member 22 is fixed to the upper part of the movable die plate 11, and a sliding member 23 laid on the upper part of a link housing 14 standing on a base (not shown).
Is installed so that its surface can slide. The sliding member 23 is preferably an oil-free sliding material. FIG. 2 is a plan view taken along the arrow A in FIG. A safety hook 25 is connected to a movable part of the air cylinder 24 and is moved forward and backward by the operation of the air cylinder 24. The figure shows the mold open state, in which the safety hook 25 is advanced and fitted into a hole 26 formed at a position where the safety hook 25 of the beam member 22 retracted integrally with the moving die plate 11 faces. This is a safety device that locks the movement of the movable die plate 11 to prevent a mold closing accident due to a malfunction of the mold clamping cylinder 17. The hole 26 may be a notch as long as it engages the safety hook 25, and if a large number of saw blade-shaped notches are provided, the safety hook 25 is engaged at any position during the mold opening stroke to form a safety device. be able to. When the safety device is released, the lock of the mold clamping device is released by operating the air cylinder 24 and retracting the safety hook 25 to separate it from the hole 26 of the beam member 22.

Reference numeral 27 denotes a safety cover, which is attached while also using the beam member 22 as a part of the framework so as to move integrally with the movable die plate 11, and is attached to the link housing 14. It covers the air cylinder 24, the movable beam member 22 and the safety hook 25. Therefore, since there is no protruding portion, there is essentially no risk of accidentally colliding and damaging during die transfer work.

[0011]

As described above, according to the present invention, the safety hook device is constructed so that the actuator for operating the safety hook and the movable member with which the safety hook engages are covered with the safety cover so that there is no protruding portion. As a result, the risk of accidentally colliding and damaging heavy objects is eliminated, and an essentially safe working environment is obtained.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a safety hook device in a mold clamping device of the present invention.

FIG. 2 is a plan view taken along arrow A in FIG.

FIG. 3 is a plan view showing a safety hook device in a conventional mold clamping device.

[Explanation of symbols]

10 Fixed Die Plate 11 Moving Die Plate 12 Fixed Die 13 Moving Die 14 Link Housing 15 Tie Bar 16 Toggle Mechanism 17 Clamping Cylinder 18 Actuator 19 Safety Hook 20 Guide Bar 21 Notch 22 Beam Member 23 Sliding Member 24 Air Cylinder 25 Safety Hook 26 Hole 27 Safety cover

Claims (1)

[Scope of utility model registration request] 1. A beam member fixed to an upper portion of a movable die plate and slidably installed on an upper surface of a link housing and a movable member of an actuator fixed to the link housing, which is in the middle of mold opening or in a mold opening limit state. A safety hook that moves forward and fits into a hole or notch formed in the beam member, the beam member that also functions as the beam member and is movable as a part of a framework, the actuator, and a safety cover that covers the safety hook. A safety hook device in a mold clamping device characterized by the above.