JPS6145938Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a die mounting device for attaching a die to the lower surface of a slide of a press machine.

Conventionally, when attaching a mold to the slide of a press machine, a hydraulic clamper is used, but the hydraulic piping and cables (hereinafter referred to as piping) that supply hydraulic pressure to the hydraulic clamper are adjusted according to the size of the mold. A margin is provided in advance to allow the clamper to move.

For this reason, when a large mold is installed, there are problems such as the piping loosens and becomes a hindrance to the press operation, or the piping comes into contact with other equipment and wears out prematurely.

This idea was made with the aim of improving this problem.The hydraulic clamper can be moved according to the size of the mold, and by installing piping along the chain that moves the hydraulic clamper, it is possible to An object of the present invention is to provide a mold mounting device for a press machine in which piping does not loosen downward from the slide, thereby facilitating mold installation and eliminating the possibility that piping may interfere with work. .

This invention will now be described in detail with reference to an embodiment shown in the drawings. In the figure, 1 is the main body of a press machine, and a crown 4 is provided on the top of an upright 3 that stands up from a corner of a bed 2. A slide 5 is provided below the crown 4 and is moved up and down by a slide drive mechanism (not shown) housed within the crown 4. A plurality of T-shaped grooves 5a are formed at equal intervals on the lower surface of the slide 5.
A head 6a of a hydraulic clamper 6 is movably fitted into the groove 5a. The hydraulic clamper 6 has a mold 7 attached to the lower surface of the slide 5, and includes a cylinder portion 6b that engages with a flange portion 7a of the mold 7, and a piston (not shown) housed in the cylinder portion 6b. The piston rod 6c includes a piston rod 6c and the head 6a projecting from the tip of the piston rod 6c, and hydraulic pressure can be supplied to the cylinder portion 6b through piping 8, which will be described later.

On the other hand, a block 10 rotatably supporting a pulley 9 is fixed by a fixing member 11 to the center side of the T-shaped groove 5a that accommodates the head 6a of the hydraulic clamper 6.

The pulley 9 has one end attached to the hydraulic clamper 6.
The middle of the cable 14a, such as a wire, tied to the piston rod 6c is detoured. The other end of the cable 14a passes through the T-shaped groove 5a and extends forward and backward of the slide 5, and after bypassing the pulley 13 of the guide member 12 installed at the bottom of the slide 5, one end of the chain 14 It is tied together. In the middle of the chain 14, each sprocket 17 of a drive shaft 16 is supported horizontally on the front and rear surfaces of the slide 5 via bearings 15.
After bypassing the chain guide portion 12a of the guide member 12, it is extended toward the hydraulic clamper 6, and its end portion is tied to the piston rod 6c of the hydraulic clamper 6. The sprocket 17 is attached to a drive shaft 16 for each hydraulic clamper 6, and one end of the drive shaft 16 is connected to a drive source 19 via a worm reducer 18. The drive source 19 is, for example, an electric motor, and the slide 5
A torque limiter 21 is installed between each sprocket 17 and the drive shaft 16 to cut off the connection between the drive shaft 16 and the sprocket 17 when a torque exceeding a certain level is applied. It is provided.

Pipes 8 such as flexible tubes 8a and cables 8b that supply hydraulic pressure to the hydraulic clamper 6 are connected to the chain 14 by cable bands 22.
4, and a part of the piping 8 is installed along the hydraulic clamper 6 to allow movement of the hydraulic clamper 6.
After forming a loop below the sprocket 17, it is connected to a hydraulic power source and an electrical system (not shown). In the figure, 23 is a proximity switch that detects the position of the mold 7, and 24 is a proximity switch that detects the retreated position of the hydraulic clamper 6.

As described in detail above, this invention moves the hydraulic clamper 6, which is movable along the T-shaped groove 5a formed on the lower surface of the slide 5, via the chain 14 and the cable 14a, which are rotated by the drive source 19. Therefore, even if the size of the mold 7 to be attached to the slide 5 changes, hydraulic pressure is supplied to the hydraulic clamper 6 after the hydraulic clamper 6 is moved by the drive source 19 until it comes into contact with the mold 7. Since the mold 7 can be attached to the slide 5 by simply moving the hydraulic clamper 6, the mold 7 can be attached more easily and safely than in the conventional case where the mold 7 was attached by manually moving the hydraulic clamper 6. In addition, piping 8 such as a flexible tube 8a that supplies hydraulic pressure to the hydraulic clamper 6 and cables 8b wired to proximity switches 23, 24, etc. are connected to a chain 8 that moves the hydraulic clamper 6 in the direction toward and away from the mold 7. Since the piping 8 is installed and extends from the lower surface of the slide 5 to the front and rear sides of the slide 5, there is a risk that the piping 8 may hang down during work and become a hindrance to the work, or may interfere with other equipment and wear out prematurely. There is no such thing. Moreover, by looping a part of the piping 8 between the guide member 12 that guides the chain 14 from the lower surface of the slide 5 to the front and back sides and the drive source 19, even if the size of the mold 7 changes, this loop can be maintained. In addition, problems such as the hydraulic clamper 6 becoming unable to move due to the piping 8 being caught in the drive source 19 and the piping 8 being damaged will not occur.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, and Fig. 1 is a front view of the entire press machine, Fig. 2 is a side view of the same, and Fig. 3 is a front view of the entire press machine.
The figure is an enlarged side view of this device, Figure 4 is a front view of the same,
FIG. 5 is a cross-sectional view taken along the line in FIG. 3, and FIG. 6 is a cross-sectional view taken along the line in FIG. 3. 1 is the press machine body, 5 is the slide, 5a is T
groove, 6 is a hydraulic clamper, 7 is a mold, 8 is piping,
14 is a chain, and 19 is a drive source.

Claims (1)

[Scope of utility model registration request] A plurality of hydraulic clampers 6 are mounted on the lower surface of the slide 5 of the press machine body 1 and are movable along the T-shaped groove 5a.
are provided, and the slide 5 is moved by these hydraulic clampers 6.
In the case where the mold 7 is attached to the lower surface, a chain 14 rotated by a drive source 19 provided on the front and rear surfaces of the slide 5 is connected to the hydraulic clamper 6, and the hydraulic clamper 6 is rotated by the drive source 19. The mold 7 is movable in the direction of approach and separation, and the piping 8 provided to the hydraulic clamper 6 is attached to the chain 14 connected to the hydraulic clamper 6, and a part of the piping 8 is moved to the slide 5. A mold mounting device for a press machine, which is formed by looping between the drive source 19 and a guide member 12 that guides the chain 8 from the bottom side to the front and rear sides.