JPS6037132Y2 - Mold conveyance device in press machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a die conveying device in a press machine.

In general, the mold conveyance device set in a press machine mainly moves the bolster on which the mold is placed to change the mold, or the bolster is fixed to the top of the press machine and only the mold is moved. There are currently known methods for importing and exporting.

The conveying device that moves the bolster to replace the mold requires removing various equipment attached to the bottom surface of the bolster each time the bolster is moved, which increases the labor involved and reduces the number of press lines. This method has drawbacks such as lowering the operating rate of the mold, and is also uneconomical because the weight of the bolster is lost because the mold is moved together with the bolster.

Further, as a type of press machine in which a bolster is fixed to a press machine and a mold is moved, the type shown in FIGS. 1 and 2 is known.

This conveying device has a bendable guide arm a protruding from the front surface of a bolster C fixed to the head of a press machine so as to be rotatable about an axis d. The arm a is folded horizontally and stored on the side of the press machine, and Fig. 2 shows how to remove the support rod f of the guide arm a, which is hooked to the hook e of the press machine, and remove the guide arm a. The press is folded, rotated downward, and stored on the side of the press machine.

That is, the above-mentioned folding type conveying device uses a folded guide arm, rather than a tab type that moves the bolster to change the mold.
Stretch a horizontally, place the mold on it, and carry it out.
All you have to do is carry it in, and the replacement work can be done quickly.However, after the mold replacement work is completed, it is not necessary to leave the bendable guide arm exposed on the side (work surface) of the press machine. It had to be stored, which obstructed the worker and made workability unfavorable.

Therefore, this invention was developed in view of the conventional drawbacks of the mold conveyance device in the press machine mentioned above, and is an improvement on the conventional mold conveyance device.The guide arm is normally housed in a bolster fixed to the top surface of the press machine, and when changing molds, At the final pull-out position of the guide arm, the guide arm is raised due to the presence of the taper formed therein, and is aligned with the raised position of the die lifter, so that when the guide arm is retracted after the mold change operation is completed, the guide arm is no longer exposed. The purpose of this invention is to provide a conveying device that is quick and has good workability.

The configuration of this invention will be explained below according to the embodiment shown in the drawings.

3 to 7, 1 is a press machine, 2 is a bolster placed and fixed on the top surface of the press machine 1 with bolts (not shown), etc., and a mold 3 is mounted on the top surface with bolts etc. It is fixed.

Reference numeral 4 denotes a number of grooves bored parallel to each other on the upper surface of the bolster 2, and a die lifter 6 with a roller 5 supported in the groove 4 is provided.
It accommodates.

A die lifter 6 bearing this roller 5 is provided at the bottom of the groove 4 of the bolster 2 so as to be movable up and down by a pneumatic/hydraulic cylinder 7, etc. In normal conditions, it is housed at the bottom of the groove 4, that is, inside the bolster 2. Then, only when moving the mold 3 of the bolster 2 on the holster 2, the pneumatic/hydraulic cylinder 7 is extended, and the roller 5 supported on the die lifter 6 is moved.
The groove 4 is brought into contact with the bottom surface of the mold 3, and the groove 4 to be accommodated can be selected depending on the mounting position and size of the mold 3.

8 is a lower groove bored in the upper surface of the bolster 2 in parallel with the groove 4; 9 is a guide arm bearing a plurality of rollers 10 along the longitudinal direction, and is housed in the lower groove 8; When the guide arm reaches the end of being pulled out, the rear end of the guide arm springs upwards so as not to be pulled out from inside the TFta.

Reference numeral 11 denotes a stopper rotatably held at the tip of the guide arm 9 by a shaft 12 or the like; 13 a handle pivotably held at the tip of the stopper 11 via a hook 14; and 15 the rear end of the guide arm 9. A claw part 16 is formed to protrude from the lower part, a tapered part 16 is formed to connect the bottom surface of the guide arm 9 and the claw part 15, and 17 is a tapered part formed inside the bolster 2, that is, at the bottom of the lower groove 8 in which the guide arm 9 is stored. This is a rear stopper protruding and fixed at the rear end position, and the claw portion 15 of the guide arm 9 comes into contact with it.

18 is the rear stopper 17 at the tip of the bottom of the lower groove 8.
The front stopper is fixed and protrudes symmetrically.

That is, the guide arm 9, like the die lifter 6 described above,
In its normal state, a handle 11 pivotally attached to the tip of the guide arm 9 is used only when the mold 3 stored in the bottom of the lower groove 8 of the bolster 2 and placed on the bolster 2 is moved from the bolster 2. Grab it and pull it out towards you.

19 is a support stand formed protruding from a part of the front surface of the bolster 2;
Reference numeral 20 denotes a stopper pin 2 that is constantly pushed upward by a spring 21 interposed inside the support base 19.
Reference numeral 2 denotes a lock pin that penetrates and holds the stopper pin 21 at a predetermined position, and is fitted into a slit-shaped guide groove 19a drilled in the lower part of the support base 19, and locks the bundle of the stopper pin 20. By pinching the portion 20a and pulling it downward and rotating it 90 degrees, the lock pin 22 is locked to the bottom surface of the support base 19, and the head 20b of the stopper pin 20 is recessed into the support base 19. It is something.

23 is a locking hole drilled at a predetermined position on the bottom surface of the guide arm 9;
Reference numeral 4 denotes a removable stand that is erected and supported at the tip of the guide arm 9.

The above is the configuration of the die conveying device in the press machine according to the present invention, and the operation thereof will next be explained with reference to FIGS. 8 to 11.

First, when replacing the mold using this mold conveying device, as shown in FIG.
The bolts of the mold 3 mounted and fixed on the upper surface are loosened and held in a free state, and the pneumatic/hydraulic cylinder 7 installed at the bottom of the groove 4 of the bolster 2 is extended, and the roller 5 supported on the die lifter 6 is moved. is brought into contact with the bottom surface of the mold 3 placed on the upper surface of the bolster 2, and the mold 3 is held slightly elevated above the upper surface of the bolster 2.

Next, the stopper pin 20 of the support base 19 fixed on the front surface of the bolster 2 is pulled down by its bundle portion 20a, and the lock pin 22 held through the stopper pin 20 is inserted into the slit-shaped guide groove 19a of the support base 19. 90 to expose the bundle portion 20a of the stopper pin 20 to the bottom surface of the support stand 19.
The lock pin 22 is locked to the bottom surface of the support base 19 by rotating it.

As a result, the head 20b of the stopper pin 20 sinks into the support base 19, and the guide arm 9 is unlocked from the stopper 11.

Then, in the state shown in FIG. 9, the guide arm 9 stored in the TR 8 of the bolster 2 is held in the direction of the arrow in FIG. and pull it out.

At this time, the roller 10 of the guide arm 9 is located slightly below the top surface of the bolster 2, as described above, and therefore moves while maintaining a constant distance from the bottom surface of the mold 3 when it is pulled out.

When the guide arm 9 is moved to a predetermined position, the tapered portion 16 formed at the predetermined position of the guide arm 9 comes into contact with the front stopper 18 of the bolster 2, and pushes the guide arm 9 upward.

As a result, the roller 10 of the guide arm 9 is
6, it can be made to protrude from the upper surface of the bolster 2 at the final pull-out position, and the height can be made to match the height of the roller 5 of the die lifter 6 which has been raised first, and the lower part of the rear end of the guide arm 9 can be Due to the presence of the protruding claw portion 15, the claw portion 15 is engaged with the rear end portion of the stopper 18, thereby stopping the movement of the guide arm 9.

Next, the bundle portion 20 of the stopper pin 20 of the support stand 19
Lock pin 2 is rotated 90 degrees and held through it.
2 is fitted into the guide groove 19a of the support stand 19.

Then, the stopper pin 20 is pushed upward by the spring force of the spring 21, and its head 20b is inserted into the locking hole 23 provided at a predetermined position of the guide arm 9, thereby holding the guide arm 9 in a locked state. At the same time, a removable stand 24 is provided at the tip of the guide arm 9 to support the guide arm 9 so that it is bent by its own weight.

Next, when the mold 3 placed on the roller 5 of the die lifter 6 is transported in the direction of the arrow in FIG. 10, the mold 3 is transferred from the roller 5 of the die lifter 6 to the roller 10 of the guide arm 9 Can be carried out at the waist.

After replacing the mold 3 by appropriate means,
Guide the mold 3 from the roller 10 of the guide arm 9 to the roller 5 of the die lifter 6, carry it onto the upper surface of the bolster 2, and
Set it in a predetermined position on the press machine 1.

Next, the stopper pin 20 inserted into the locking hole 23 drilled at a predetermined position of the guide arm 9 is locked to the bottom surface of the support base 19 in the manner described above, and then the handle 13 of the guide arm 9 is locked. When the guide arm 9 is held and pushed along the TR8 of the bolster 2, the guide arm 9 will be
It is stored again inside the lower groove 8 and kept at a constant distance from the upper surface of the bolster 2.

During this storage, the guide arm 9 is stopped by the claw portion 15 of the guide arm 9 coming into contact with the rear stopper 17 formed protruding from the rear end of the bolster 2.

After that, the head 20b of the stopper pin 20 is projected in the above-described manner and is engaged with the tip of the stopper 11 of the guide arm 9, and the pneumatic/hydraulic cylinder 7 is shortened as shown in FIG. The roller 5 of the die lifter 6 on which the mold 3 is placed is housed in the groove 4 of the bolster 2.

Thereby, the mold 3 is placed on the upper surface of the bolster 2, and when it is tightened and fixed with bolts or the like, the replacement work of the mold 3 is completed.

By repeating the above-described operations, the mold 3 set in the press machine 1 can be quickly replaced.

Although the mold conveyance device for the press machine according to the present invention has been shown in which the guide arm is raised by a taper formed on the guide arm, it is not limited to this. Of course, it may be moved up and down.

As explained above, this device is installed in several parallel grooves on the top surface of the bolster so that it can be raised and lowered by a lifting means such as a pneumatic or hydraulic cylinder, and a large number of rollers are arranged on the top surface along the longitudinal direction of the grooves. The die lifter is housed in a lower groove on the upper surface of the bolster, which is bored parallel to the groove, so that it can be pulled out along the lower groove, and a number of rollers are attached to the upper surface of the die lifter.
A guide arm arranged along the longitudinal direction of R and having a tapered portion for raising the die lifter to the same height as the roller support surface at the end position of the drawer, and means for locking the guide arm to the bolster at the storage position and the drawer position. Therefore, when replacing the mold, the die lifter can be raised and the mold can be lifted above the upper surface of the bolster and supported by the rollers, and the mold can be easily moved and positioned on the bolster.

Then, when the guide arm stored in the bolster is pulled out, the roller supporting surface is raised by the tapered part to the same height as the roller supporting surface of the die lifter at the end of the drawing, and the mold is pulled out from above the die lifter. It can be carried out light and smoothly without any steps, and new molds can be carried in easily.

In particular, the roller support surface of the guide arm is sunk below the top surface of the bolster at positions other than the end position of the drawer, and even if there is a mold on the bolster, the weight of this mold does not act on the guide arm. Therefore, the guide arm can be easily pulled out and stored.

Moreover, after the mold is replaced, the guide arm can be stored in the bolster and does not protrude, so it does not interfere with press work, there are fewer restrictions on the installation location, and the installation area can be reduced.

[Brief explanation of drawings]

1 and 2 are schematic diagrams showing a mold conveyance device in a conventional press machine, and FIGS. 3 to 7 are diagrams showing a mold conveyance device in a press machine according to the present invention, Fig. 3 is a plan view of the entire assembly, Fig. 4 is a partially sectional plan view of the guide arm when it is pulled out, Fig. 5 is a partially sectional front view of the guide arm, and Fig. 6 shows the tip of the guide arm. FIG. 7 is an enlarged sectional view of the main part, FIG. 7 is a side view thereof, and FIGS. 8 to 11 are explanatory views of the operation of the mold conveying device in the press machine according to the present invention. 1... Press machine, 2... Bolster,
3...Mold, 4...Groove, 6...
・Die lifter, tail...T groove, 9...Guide arm, 5.10...Tara, 16...Tapered part.

Claims (1)

[Scope of utility model registration request] A die lifter is installed in several parallel grooves on the upper surface of the bolster so that it can be raised and lowered by a lifting means such as a pneumatic or hydraulic cylinder, and has a large number of rollers arranged along the longitudinal direction of the grooves on the upper surface of the die lifter. The die lifter is stored in a lower groove on the upper surface of the bolster bored parallel to the groove so that it can be pulled out along the lower groove, and a large number of rollers are arranged on the upper surface along the longitudinal direction of the lower groove, and the die lifter is Transport of a die in a press machine, characterized by comprising a guide arm having a tapered part for raising the roller to the same height as the roller support surface, and means for locking the guide arm to a bolster in a retracted position and a pulled-out position. Device.