JP2000225493A - Press device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press device whose die and a raw material can be automatically changed or in which a charger device can be easily cleaned and whose construction is simple. SOLUTION: In a press device equipping with a die automatic changing device C performing automatic changing by attaching and detaching a die set D having been composed of a metallic frame 6 equipping with an upper plunger 7 and a lower plunger 8 and a raw material supply device F supplying a raw material from a raw material hopper 17 to the inside of the metallic frame 6, by forming a floating frame holder 5 movable in the up- and -down directions supporting the metallic frame 6 to a square shape whose one side is opened, and by providing the die automatic changing device C in the opening direction, the press device is constituted so that the die set is inserted and supported.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic mold exchanging apparatus for automatically exchanging a mold set constituted by a mold frame having an upper plunger and a lower plunger by attaching and detaching the mold set, and from a material hopper into the mold frame. The present invention relates to a press device provided with a raw material supply device for supplying a raw material.

[0002]

2. Description of the Related Art Conventionally, in a floating mold type press apparatus, a great deal of time has been required for exchanging dies, switching raw materials, and cleaning chargers and the like. In particular,
Regarding the latter, it is possible to cut through by adopting a policy that does not switch the raw material as much as possible, or to rotate the charger itself upward to clean the charger box,
Some special measures such as cleaning the charger box by applying a special stroke in front of the press and projecting the charger box were required.

Accordingly, the applicant of the present invention has disclosed a raw material supply device for automatically mounting and dismounting a mold set composed of a metal frame having an upper plunger and a lower plunger, and for exchanging raw materials into the metal frame from a raw material hopper. A technique for performing automatic replacement is disclosed in Japanese Utility Model Laid-Open No. 5-405.

However, this technique is effective, but has a problem that the structure of the connection between the frame holder and the charger device is complicated, and that the control mechanism for the vertical operation is complicated.

[0005]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a press device which can easily exchange a mold and a raw material or clean a charger device and has a simple structure. .

[0006]

According to the present invention, there is provided an automatic mold exchanging apparatus for automatically exchanging a mold set comprising a mold frame having an upper plunger and a lower plunger, and a material hopper. In a press apparatus provided with a raw material supply device for supplying a raw material into the metal frame, a vertically movable floating frame holder that supports the metal frame is formed in a quadrangular shape with one side opened, and the opening direction is changed. The mold automatic changer is provided to insert and support the mold set.

A first traverser capable of moving the automatic die changing device along a press device is provided, and a die changing carriage having an electric wheel driving device is provided on the traverser to perform automatic die changing. It is configured to be possible.

Therefore, according to the present invention, the floating frame holder is opened at the front and the automatic die changing device having the electric wheel driving device is provided in the opening direction, so that the automatic die changing can be easily performed. In addition, since there is no protrusion to the rear part of the press, the structure is simple and a moving device of the raw material supply device can be easily constructed at the rear part of the press.

Also, an automatic die changing apparatus for automatically mounting and removing a die set constituted by a die frame having an upper plunger and a lower plunger, and a raw material supply for supplying raw materials into the die frame from a raw material hopper. In a press device equipped with a device, a second traverser movable along the press device is provided on the side opposite to the automatic die changing device, and the raw material supply device is mounted on the traverser, and the raw material supply device is mounted on the traverser. Is provided with a charger device which can be connected to and disconnected from the press device so that the material supply device can be automatically replaced.

A vertically movable floating frame holder for supporting the mold frame is formed in a quadrangular shape with one side opened, and the automatic mold changing device is provided in the opening direction to set a mold set. It is configured to insert and support, and the automatic die changing device is provided with a first traverser movable along a pressing device, and a die changing carriage having an electric wheel driving device is provided on the traverser, and a die changing truck is provided. It is configured to be capable of automatic exchange, the charger device is configured to be connectable / disconnectable to the floating frame holder, and a second traverser movable along a press device is provided on the opposite side of the mold automatic exchange device, The raw material supply device is mounted on the traverser, and the raw material supply device is connected to a press device.
A detachable charger device is provided to enable automatic replacement of the raw material supply device.

Therefore, according to the present invention, the exchange of the mold and the raw material is fully automatic, the interlock operation is performed mechanically and electrically, and the speed of the bogie, the rising and lowering speed of the frame holder, etc. Is pre-programmed to be optimal and fully automatic operation is possible. Further, since the charger device can be separated from the press, cleaning work and the like can be easily performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a pressurizing piston 2 is fitted in an upper frame 1 of a press, which is generally designated by a reference character M, and a hydraulic cylinder is formed therein. The pressure block 3 to which the plunger clamp device 4 is fixed is fixed.

A lower plunger clamp device 11 is fixed to the upper surface of the lower frame 10, and the floating frame holder 5 is supported via a plurality of frame floating cylinders 9. The floating frame holder 5
A mold set D is attached to the base unit by a lock device (not shown). The mold set D includes an upper plunger 7 and a lower plunger 8 held by a mold frame 6 and its lining liner 24. The floating frame holder 5 is formed in a quadrangular shape with one side open as shown in FIG. 4, that is, in a so-called U-shape, and the metal frame 6 is easily inserted from the open portion E as described later. And can be supported.

At the rear of the floating frame holder 5, a bracket portion 5a is integrally formed so as to protrude therefrom, and a charger device 19 is fixedly mounted above the bracket portion 5a by a lock device (not shown).

Next, an automatic die changing apparatus C will be described with reference to FIG.
This will be described with reference to FIG. On the front surface of the press M, rails 16 are laid in a horizontal direction (up and down direction in FIG. 2), and a plurality of first traversers 14 are provided so as to be able to run. A rail 15 is provided on the upper surface of the traverser 14 in the direction of the press M, that is, in a direction perpendicular to the rail 16, and the mold exchanging truck 12 is mounted on the rail 15 so as to be able to travel by an electric wheel driving device 13. ing.

The mold set D set on the press M
The empty cart 12 moves forward to the center of the press M, is housed in the cart 12, is pulled out, and
Is moved to the standby place by the traverser 14. Next, in a state where the new mold set is prepared on the exchange cart 12A, the exchange cart 1 is transported to the front of the press M by the traverser 14A and is placed in the empty frame holder 5 of the press M.
Automatically mounted by 2A. Note that the first traversers 14 and 14A may be a mechanism that sequentially moves as an integrated body.

The process of automatic mold replacement will be described in more detail with reference to FIGS. FIG. 3 and FIG.
5 shows the state of the confirmation step in which the traverser 14 stops at a predetermined position on the front surface of the press M. In this state, the exchange trolley 12 is driven by the driving device 13 to move forward, and the mold set D
Is inserted from the open portion E of the frame holder 5 and reaches the center of the press M, the lower surface of the metal frame 6 is positioned at a height of δ from the receiving surface A of the frame holder 5 as shown in FIG. It is supported by the carriage 12 in a floating state.

Next, the floating piston 9 is raised, and as shown in FIG. 5, the frame holder 5 is made slightly higher than the aforementioned δ, and the metal frame 6 is fixed to the holder 5 by a positioning pin clamp device (not shown). Then, the piston 2 is lowered while the metal frame 6 is fixed, and the upper plunger 7 is held by the clamp device 4 provided below the pressure block 3 and is pulled up to above the metal frame 6 as shown in the figure.

Further, the lower plunger 8 is moved by the push-up cylinder 27 built in the lower frame 10 into the bogie 1.
2 and is stopped in the state shown in the figure.

Then, the carriage 12 is returned onto the traverser 14 by the driving of the driving device 13. The lower plunger 8 lowers the push-up cylinder 27 from the above-mentioned raised state by fine movement to the upper surface of the lower frame 10, and also moves the frame holder 5 to a relatively appropriate position by fine movement, that is, to a position where the forming operation can be started. , Lower each to stop. In this state, the lower plunger clamp device 11 is operated, and the lower plunger 8 is fixed.

The above operations are fully automatically operated, all of which are mechanically and electrically interlocked, and the speed of the trolley 12, the rising and lowering speed of the frame holder 5 and the like are programmed in advance to optimal ones, and Automatic die exchange is performed.

Hereinafter, an automatic exchange device for the raw material supply device F will be described. As shown in FIGS. 1 and 2, a rail 31 is laid along the rear surface of the press M, and a plurality of second traversers 26 are provided on the rail 31 so as to run freely. On the traverser 26, a charger device 19, a raw material hopper 17, a conveyor 18, and the like are mounted.

That is, referring also to FIG. 7, a rail 32 is provided on the second traverser 26 in the direction of the press M, and the charger receiving trolley 20 is movable on the rail 32 by the trolley driving cylinder 21 in the forward and backward directions. Is provided. Above them, a hopper 17
The raw material is conveyed to a charger device 19 by a conveyor 18 from below the hopper 17. The space between the raw material discharge port of the conveyor 18 and the receiving port of the charger device 19 is automatically detachable at a position indicated by reference numeral B, and a bellows is mounted on the charger device 19 side.

As described above, in FIG. 1, the charger device 19 is shown as being fixed to the bracket portion 5a of the floating frame holder 5 by the lock device. Is separated from the press M, and the next hopper 17 for blending new raw materials is connected to the rear portion of the empty frame holder 5 coming to the rear of the press M together with the cleaned charger device 19.

Hereinafter, a step of separating the charger device 19 from the press M will be described with reference to FIGS. When the second traverser 26 is at a fixed position in front of the press M and the molding in the hopper 17 is completed in an empty state using the raw material in the hopper 17, first, the charger receiving carriage 20
The frame holder 5 is stopped at a height position at which the frame can be advanced. FIG.
Shows a state in which the receiving cart 20 has come to a position directly below the charger device 19 and has stopped.

Then, as shown in FIG. 9, the frame holder 5 is lowered and the charger device 19 is transferred from the bracket portion 5a to the receiving carriage 20. At this time, the lock of the lock device (not shown) of the charger device 19 is released. Further, the positioning pins 23 of the receiving cart 20 fit into the fitting holes of the support plate 22 of the charger device 19, and are accurately and firmly fixed. On the other hand, the connection between the bellows at the top of the charger device 19 and the discharge port of the conveyor 18 is separated by a separate circuit (not shown) by another circuit. FIG. 10 shows a state in which the charger device 19 is separated from the press M. Thus, the raw material supply device F including the charger device 19 is separated from the press M by the movement of the second traverser 26.

Next, the hopper 17 in which new raw materials are stored
Then, the traverser 26 equipped with the charger device 19 cleaned in another place comes to the rear fixed position of the press M and is stopped. Then, the frame holder 5 of the charger device 19
Is mounted in the reverse order of the above-described separation step. In this way, the press M can be fed automatically, quickly and accurately from a new raw material hopper.

[0028]

The present invention is configured as described above, and has the following effects. (1) Since the front part of the floating frame holder is open, the mold can be easily exchanged automatically. (2) The automatic die changing device having the electric wheel driving device does not protrude to the rear of the press, has a simple structure, and is capable of constructing a moving device of the raw material supply device at the rear of the press. Therefore, it is possible to perform automatic material exchange, which was difficult in the past. (3) The above-mentioned mold and raw material exchange is automatically operated,
The interlock operation is performed mechanically and electrically, and the speed of the bogie, the ascent / descent speed of the frame holder, and the like are preliminarily programmed to be optimal, and complete automatic operation is possible. (4) Since the charger device can be separated from the press, cleaning work and the like can be easily performed.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a side sectional view showing a state of a checking step of the automatic die changing apparatus.

FIG. 4 is a sectional view taken along line YY of FIG. 3;

FIG. 5 is a side sectional view showing a state of a mold replacement step.

FIG. 6 is a side sectional view showing a state of a replacement completion step.

FIG. 7 is a sectional view taken along line XX of FIG. 1;

FIG. 8 is a side view showing a state in which the receiving cart approaches the charger device.

FIG. 9 is a side view showing a state where the charger device is mounted on a receiving cart.

FIG. 10 is a side view showing a state where the charger device is separated from the press.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Press upper frame 2 ... Pressure piston 3 ... Pressure block 4 ... Clamping device for upper plungers 5 ... Floating frame holder 6 ... Metal frame 7 ... Upper plunger 8. ..Lower plunger 9 ... Floating piston rod 10 ... Lower frame 11 ... Clamp device for lower plunger 12 ... Exchange truck 13 ... Electric wheel drive device 14 ... First traverser 15, 16, 31 ... Rail 17 ... Hopper 18 ... Conveyor 19 ... Charger device 20 ... Charger receiving car 21 ... Carriage drive cylinder 22 ... Support plate 23 ... Positioning pin 24 ·················································································· D Tsu door C ··· mold automatic exchange apparatus F ··· material supply device

Claims (4)

[Claims] 1. An automatic mold changing device for automatically changing a mold set comprising a mold frame having an upper plunger and a lower plunger and detaching the mold set, and a material for supplying a material into the mold frame from a material hopper. In a press device equipped with a supply device, a vertically movable floating frame holder supporting the metal frame is formed in a quadrangular shape with one side opened, and the automatic die changing device is provided in the opening direction. A press device configured to insert and support a mold set. 2. A first traverser capable of moving the automatic mold exchanging device along a press device, and a mold exchanging truck having an electric wheel driving device is provided on the traverser for automatic mold exchanging. The press device according to claim 1, wherein the press device is configured to be capable. 3. An automatic die changing device for automatically mounting and removing a die set comprising a die frame having an upper plunger and a lower plunger, and a raw material supply for supplying a raw material into the die frame from a raw material hopper. In a press device equipped with a device, a second traverser movable along the press device is provided on the side opposite to the automatic die changing device, and the raw material supply device is mounted on the traverser, and the raw material supply device is mounted on the traverser. Is a press device characterized by providing a charger device that can be connected to and disconnected from the press device so that the material supply device can be automatically replaced. 4. A floating frame holder that supports the mold frame and that can move in the vertical direction is formed in a quadrangular shape with one side opened, and the mold automatic changing device is provided in the opening direction to set a mold set. It is configured to insert and support, and the automatic die changing device is provided with a first traverser movable along a pressing device, and a die changing carriage having an electric wheel driving device is provided on the traverser, and a die changing truck is provided. 4. The press device according to claim 3, wherein the press device is configured to be capable of automatic exchange, and configured to be able to connect and disconnect the charger device to and from the floating frame holder.