JPH02251322A - Exchanging device of die for press - Google Patents

Abstract

PURPOSE:To greatly reduce a housing space, to enable taking die and housing of a used die in a short time and to enable shortening of exchange time by housing many dies in a magazine, indexing and controlling the magazine. CONSTITUTION:When a die 2 is exchanged, at first, a slide is lowered and the die 2 attached to the slide is placed on a die 2 on a bolster and the slide is lifted after a hydraulic clamp is released. Next, the die 2 is lifted until the rear face of the die 2 is lifted over the upper face of the bolster with a die lifter in the bolster and, under that state, the die 2 is drawn out in the direction of a lifter 10 by engaging the pin of a putting in and out device for the die to the hook of the die 2. Then die housing parts 10a, 10b are lifted with a lift cylinder 12 and the lower side die housing part 10b is stopped at the same height to the guide rail of the press body 1 and a stopper 15 is released. The die 2 is delivered along the guide rail to the die exchange position and is positioned with a positioning pin 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mold changing device for a press that enables automatic mold changing.

[Conventional technology]

Conventionally, automatic warehouse systems and the like have been known as this type of mold changing device.

In the above automated warehouse system, a rack for storing molds is installed near the press body, and after a crane takes out the molds to be used from this rack, a lift device moves the taken out molds to a mold exchange position. The used molds are then lowered to a predetermined position on the rack and carried into the press body using a push-pull device, and the used molds are stored in a predetermined position on the rack by performing the reverse operation to the above.

[Problem to be solved by the invention]

However, mold changing equipment such as the automated warehouse system described above requires a large floor space to install the racks, cranes, lift equipment, etc. that house the molds, and the equipment as a whole is expensive. Ta.

This invention has been made to improve the above-mentioned problems, and is intended to provide a press die changing device that can be installed in a small space.

[Means and operations for solving the problem] In order to achieve the above object, the present invention is provided with a press body installed near the press body,
and a magazine housing a plurality of molds in gondolas that can be rotated vertically, and a mold storage that is vertically movable and is provided between the press body and the magazine and that stores the mold to be used next. a push-pull device table for loading and unloading the mold into the gondola provided in the magazine and indexed at the mold take-out position; The mold mounting device is equipped with a mold loading/unloading device that takes the mold in and out of the press body, allowing the mold indexed by the magazine to be transported to the mold mounting position of the press body via the lifter. .

Furthermore, the present invention provides a press mold exchange device that stores used molds in a magazine and stores them three-dimensionally, thereby making it possible to store a large number of molds in a small space.

〔Example〕

An embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes a press body, and behind this press body 1, a magazine 3 containing a large number of molds 2 is installed.

The magazine 3 has sprockets 4 spaced apart in the vertical direction, two endless chains 5 are wound between these sprockets 4, and the mold 2 is wound between these chains 5. The upper part of the gondola 6 that stores the gondola 6 is suspended via a support shaft 7 so as to be swingable.

Also, among the upper sprockets 4, the upper sprocket 4
A drive motor 8 is linked to the lower sprocket 4, and the chain 5 is rotated by the drive motor 8 via the sprocket 4. An encoder 9 is linked to the lower sprocket 4. , the position of each gondola 6 can be detected by this encoder 9.

On the other hand, a push-pull device 11 is installed between the lower sprockets 4 to push the mold 2 on the gondola 6 indexed to the mold removal position toward the lifter.

The lifter 10 is installed between the press body 1 and the magazine 3, and is provided with mold storage sections 10a and 10b in two stages, upper and lower, which are moved up and down by a lift cylinder 12.

Further, a cart 13 is provided between the lifter 10 and the magazine 3, and is movable in a direction perpendicular to the mold loading/unloading direction. A stopper 1 that appears in the vertical direction in the portion 10b
4.15 are provided respectively.

Further, inside the press body 1, a guide rail 17 for guiding the mold 2 pushed out from the magazine 3 to the mold mounting position of the press body 1, and a mold loading/unloading device 18 are installed between these guide rails 17. ing.

The mold loading/unloading device 18 has a moving member 20 having a pin 19 that engages with a hook 2a provided at the bottom of the mold 2.

The movable member 20 is driven by a cylinder 21, and the mold is attached to the position by the action described later.
The used mold 2 is brought in and the used mold 2 is pulled out from the mold mounting position.

In addition, in the figure, 22 is a positioning pin provided at a position for mounting the mold, 23 is a hydraulic clamp that fixes the mold 2 to the upper surface of the bolster 1a of the press body 1 and the lower surface of the slide 1b, respectively, and 24 is a hydraulic clamp provided inside the bolster la. This is a mold lifter.

Next, to explain the effect of die exchange, when exchanging the die 2 already used in the press body 1 with another die 2, first lower the slide 1b and remove the die attached to the slide 1b. Place the mold (upper mold) 2 on the mold (lower mold) 2 on the bolster 1a.
When the hydraulic clamp 23 is released in this state, the slide 1b is raised.

Next, the mold 2 is raised by the mold lifter 24 on the bolster 1a until the lower surface of the mold 2 is lifted above the upper surface of the bolster 1a. 2a and pull out the mold 2 toward the lifter 10.

At this time, the mold 2 to be used next is selected from the magazine 3 and stored in the mold storage part 10b on the lower side of the slip lid 10, and the mold 2 pulled out from the press body 1 is stored in the mold storage part 10b on the lower side of the slip lid 10. It passes through the mold storage section 10a and reaches the top of the carriage 13, where it is temporarily stopped by the stopper 14.

Next, the lift cylinder 12 lifts the mold storage parts 10a and 10.
b is raised and the lower mold storage part 10b is stopped at the same height as the guide rail 17 in the press body 1, the stopper 15 is opened and the mold 2 is moved along the guide rail 17. It is sent out to the mold exchange position and is positioned by the positioning bin 22.

Thereafter, as the mold lifter 24 descends, the slide 1b descends, and the upper mold is moved by the hydraulic clamp 23 to the slide 1b.
Then, the lower molds are respectively clamped to the bolsters 1a, and the installation of the mold 2 is completed.

On the other hand, the used mold 2 temporarily stopped on the trolley 13 is moved to the stopper 1 after a predetermined gondola 6 of the magazine 3 is indexed.
With the release of 4, push.

While being pulled into the gondola 6 by the pull device 11,
Thereafter, the gondola 6 containing the mold 2 to be used next is indexed to the mold exchange position.

Then, this mold 2 is pushed out by the push-pull device 11 and stored in the mold storage section 10b below the lifter 10,
It waits in the mold storage part 10b until the next exchange.

Thereafter, by repeating the above operations, the mold 2 can be automatically replaced.

In addition, if multiple magazines 3 are installed, these magazines 3
By connecting the space between them with a transport carrier, it is possible to easily cope with an increase in the number of molds, and it is also possible to easily increase the number of magazines 3.

〔Effect of the invention〕

As described in detail above, this invention stores a large number of molds in a magazine, so the storage space can be significantly reduced compared to conventional racks, and the magazine can be indexed. By controlling the mold, the mold to be used next can be taken out at the mold removal position.
It also eliminates the need for conventional cranes and reduces equipment costs.

Furthermore, since the mold can be taken out and the used mold can be stored in a short time, the mold replacement time can be shortened.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall configuration diagram, Fig. 2 is a view taken from the direction of ■ in Fig. 1, and Fig. 3 is along the line - - ■ in Fig. Arrow view, Fig. 4 is Fig. 1 IV, -
FIG. 3 is a cross-sectional view taken along the rV line. 1 is a press body, 2 is a mold, 3 is a magazine, 6 is a gondola, 10 is a lifter, 10b is a mold storage section, 11 is a push-pull device, and 21 is a mold take-out device.

Claims (2)

[Claims] (1) A magazine 3 installed near the press body 1 and housing a plurality of molds 2 in a vertically rotatable gondola 6, and a magazine 3 provided between the press body 1 and the magazine 3; and a lifter 10 having a vertically movable mold storage section 10b that accommodates the mold 2 to be used next, and a gondola 6 provided in the magazine 3 and indexed to the mold removal position. A press comprising a push-pull device 11 for taking in and taking out the mold 2, and a mold loading/unloading device 21 provided in the press body 1 and for taking the mold 2 in and out of the mold mounting position of the press body. Mold changing device. (2) The mold changing device according to claim 1, wherein the number of molds 2 can be increased by connecting a plurality of magazines 3 with a transport carrier.