JPH0519146Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a device for positioning a mold on a machine bed in a press machine.

<Prior Art> A press die is positioned on a machine bed using a key block as a reference. As shown in FIGS. 7 and 8, the conventional positioning device has a key groove 2 in the X-Y axis direction on the bottom surface of the press die 1, and a key groove 2 in the X-Y axis direction on the top surface of the machine bed 3. A key groove 4 is provided, and a key block 5 which also fits into the key groove 2 on the press die 1 side is provided in the key groove 4 on the machine bed 3 side so as to be slidable along the key grooves 2 and 4. be.

<Problem to be solved by the invention> In the above-mentioned conventional device, the press mold 1 suspended by a crane is lowered onto the machine bed 3 while adjusting so that the keyway 2 matches the keyway 4, and the key block 5 is aligned with the keyway. The key block 5 moves into the key groove 4 to a position where it fits with the key grooves 2 and 4, and finally the key block 5 fits between the key grooves 2 and 4 to perform positioning.

In this case, at least three workers are required to operate each key block 5, and in order to move the key blocks 5, they have to reach close to where the press die 1 faces the machine bed 3, which is dangerous. It's on.

Furthermore, it is difficult to fit (insert) the key block 5 and lower it at the same time due to the parallelism of the press mold 1, the shaking of the crane, etc., and the key block 5 is set by repeatedly going up and down. Therefore, there are problems such as a long setup time and an increase in power consumption.

<Means for Solving the Problems> The present invention has improved the above-mentioned problems, and its characteristic configuration is a key groove provided in a press mold, and a key groove on which the press mold is placed. In a device for positioning a key block by fitting it between a key groove provided on a machine bed, the key block is positioned on the machine bed side by an elastic member so that the key block corresponds to the key groove of a press mold at a downward slope angle. The projectile is placed in a keyway so that it can be moved up and down in a floating state.

<Function> With the above-described structure, the present invention aligns and engages the key groove on the press mold side with the key block while the key block is floating at an angle, and then gradually lowers the press mold to reduce the elasticity of the elastic member. The key block is moved downward against the force, and when the bottom surface of the press mold comes into contact with the top surface of the machine bed, the key block is completely fitted between the key grooves and positioning is performed, and the press mold is raised. When the key block is released from the mold, the key block is automatically lifted up by the elastic member, and the key block is released from the complete engagement between the key grooves without the key block being pulled out.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIGS. 1 and 2, 1 is a press mold, and a key groove 2 is provided on the bottom surface of the press mold.
Reference numeral 3 denotes a machine bed on which the press die 1 is placed, and a keyway 4 is provided on the upper surface of the machine bed.
Reference numeral 10 denotes a positioning key block fitted between the key grooves 2 and 4.

In the present invention, the key block 10 is arranged so as to be movable up and down in the key groove 4 on the machine bed 3 using an elastic member in a floating state so that it corresponds to the key groove 2 of the press mold 1 at a downward slope angle θ. It is characterized by what it did.

As shown in FIGS. 1 and 2, the key block 10 is movable up and down at an inclination angle θ to bring the bullet into a floating state. As shown in FIGS. A coil spring 11 is inserted. Further, as shown in FIGS. 3 and 4, the coil spring 11 may be replaced with a plate spring 11a.

In any of the above-mentioned aircraft levitation means, the lower end of the key block 10 is made into a curved surface 12 in order to smoothly move up and down using the tip of the key block 10 as a fulcrum, and also to facilitate pushing and pulling operations of the key block 10. For this reason, it is desirable to provide a grip portion 13 on the rear end of the key block 10.

5 and 6 show other embodiments of the present invention. This device has the same basic structure as shown in FIGS. 1 to 4, but the other structure is as follows. One end of a substantially U-shaped handle 14 is pivotally attached to the rear end of the key block 10 by a support shaft 15, and a roller 20 is attached to the other end, and this roller 20 rollably abuts on the key groove 4.

A spring receiver 16 with the support shaft 15 as a fulcrum is integrally provided on the handle 14, and a curved guide shaft 17 is provided on the upper surface of the key block 10 so as to slide through the spring receiver 16. The guide shaft 17 has a stopper plate 1 on which the top surface of the spring receiver 16 comes into contact.
8 is fixed. Then, the guide shaft 17
This structure has a coil spring 18 interposed between the upper surface of the key block 10 and the lower surface of the spring receiver 16, with the coil spring 18 located at the center.

Next, the positioning operation of the press die 1 according to the present invention will be explained. In the embodiment shown in FIGS. 1 to 4, when the press die 1 is not placed on the machine bed 3, the key block 10 is moved around the curved surface 12 at the tip as a fulcrum within the keyway 4 on the machine bed 3 side. The rear end floats due to the elasticity of the coil spring 11 or the leaf spring 11a and is held at a predetermined inclination angle θ.

In this state, the press die 1 is moved downward, and once it has descended to approximately 50 mm from the top surface of the machine bed 3, it is stopped, and a part of the keyway 2 on the press die 1 side is engaged with a part of the key block 10. Adjust the set position accordingly. At this time, the key block 10 may be inserted by holding the grip portion 13.

Thereafter, by gradually lowering the press die 1, the coil spring 11 or leaf spring 11a is compressed or deformed, and the key block 10 pivots downward using the curved surface 12 at the tip as a fulcrum. When the mold 1 is placed on the machine bed 3, the key block 10 is completely fitted between the key grooves 2 and 4 for positioning, as shown in FIGS. 2 and 4.

In the case of the embodiments shown in FIGS. 5 and 6, the elasticity of the coil spring 19 is transmitted to the spring receiver 16, which causes the handle 14 to rotate to the left in FIG. 5 about the support shaft 15. When the key block 10 is pushed up, the rear end of the key block 10 is raised and operated. With this, the key block 10 is held at the tilt angle θ as shown in FIGS. 1 and 3. The engagement between the key block 10 and the key groove 2 of the press die 1 is the same as described above, and the gradual downward movement of the press die 1 causes the press die 1 to engage the key block 10 with the key groove 2 of the press die 1.
This push-down rotates the handle 14 to the right, and the spring receiver 16 compresses the coil spring 19, so that the key block 10 is completely fitted between the key grooves 2 and 4 as shown in FIG. It is something to do.

In any of the embodiments described above, when the press mold 1 is lifted and released, the key block 10 is lifted up by the elasticity of the coil spring 11, the plate spring 11a, or the coil spring 19, and automatically changes to the inclined angle state. Restore. If the key block 10 is stuck in the key grooves 2 and 4 at the time of demolding, the key block 10 is pulled out by holding the grip part 13 or the handle 14.

<Effects of the Invention> As described above, according to the present invention, a bullet is arranged so that the key block can be moved up and down by the bullet member so that it corresponds to the key groove on the machine bed side at a downward slope angle to the key groove of the press mold. Since it is arranged in a floating state, the key groove of the press mold is engaged with the key block during the descent before the press mold is completely placed on the machine bed, and a preliminary positioning operation can be obtained. When completely placed on the machine bed, the key block is completely fitted between both key grooves, which has the advantage of shortening the setting time, increasing safety, and allowing positioning work to be performed by a small number of workers.

[Brief explanation of the drawing]

FIG. 1 is a side view of the main parts of the present invention, FIG. 2 is a side view of the positioning completed state, FIG. 3 is a side view of a modified example of the design of FIG. 1, and FIG. 4 is a side view of the same positioning completed state. FIG. 5 is a side view of main parts of another embodiment of the present invention;
6 is a side view of the same positioning completed state, FIG. 7 is a perspective view showing the conventional device, and FIG. 8 is an enlarged view of section A in FIG. 7. 1...Press mold, 2...Keyway, 3...Machine bed, 4...Keyway, 10...Key block,
11... Coil spring, 11a... Leaf spring,
14... Handle, 15... Support shaft, 16... Spring receiver, 17... Guide shaft, 18... Stopper plate, 19... Coil spring, 20... Roller.

Claims (1)

[Scope of utility model registration request] In a device for positioning a key block by fitting it between a key groove provided in a press die and a key groove provided on a machine bed on which the press die is placed, the key block is inserted into the press die. 1. A positioning device for a press die, characterized in that the press die is disposed in a floating state so as to be movable up and down in a key groove on a machine bed side by means of an elastic member so as to correspond to the key groove at a downward slope angle.