JPS6253280B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a die set changing device for a powder molding press, and in particular, to a die set installed in a press machine, and a simulator for simulating a replacement die set installed in parallel with the press machine, for removing and inserting the die set. The present invention relates to a device that simultaneously performs the above operations and always orients a die set storage box in a fixed direction.

In recent years, it has become necessary to increase the operating time of presses with the intention of increasing the efficiency of powder compacting, and as part of this, it has become important to shorten the time for replacing molds and die sets.However, as molded products become larger and more complex, As die sets have become larger and more complex, there is a limit to their weight-bearing capacity and the work is dangerous when loading and unloading die sets using forklifts, chain blocks, or manually. .

Based on the above, the applicant
According to the configuration of this powder molding press, firstly, the removal of the old die set and the insertion of the new die set must be performed separately in different processes. I was frustrated that I couldn't shorten the replacement time. Secondly, when the box, which is swingably provided on the side of the press via an arm, is in the die set adjustment position, the die set inside the box is pushed out toward the rotational movement path of the box by the hydraulic cylinder. If you want to adjust this die set in a simulator in the same factory or in another mold factory, a transportation means such as a forklift or a wagon or a simulator should be permanently installed on the extrusion side of the die set, that is, near the rotating movement path of the box. As a result, the working surface area of the press is unnecessarily restricted, which is an obstacle to the press operation.

Therefore, the present invention firstly takes out an old die set and inserts a new die set into a press machine and a simulator installed in parallel with the press machine at the same time in one process, thereby efficiently shortening the die set replacement work. The purpose is to Second, even when the die set storage box is located on the side of the simulator where replacement die sets are adjusted, the opening of the box should not face the moving path of the box, regardless of the layout of each factory.
The purpose is to make press work more efficient.

The structure of the present invention will be explained based on the illustrated embodiment. In FIGS. 1 to 6, reference numeral 1 is a press body of a crank press. It is open on the front and rear sides and is provided with a series of rollers 3 on both bolsters 2, 2 to facilitate sliding of the die set. A bracket 6 having a U-shaped cross section and having upper and lower bearings 4 and 5 at one end is integrally fixed to the front and rear surfaces of the press body 1. Between the bearing parts 4 and 5 of each bracket, there is provided a support arm 8 which projects horizontally from the lower part of the outer periphery of the shaft body and has a bearing part 7 at its tip, and a reinforcing rib 9 which connects the outer periphery of the shaft body and the support arm 8. The stepped vertical shaft 10 is rotatably inserted. In addition, the support shaft 11 of a die set storage box 12, which is a box with an open front and a support shaft 11 hanging from the bottom surface, is inserted into the tip bearing portion 7 of the support arm 8. The die set storage box is made to be able to rotate and revolve, and a hydraulic cylinder 13 is provided at a suitable position on the back side of the die set storage box 12 facing toward the opening side of the box. Here, the length of the support arm 8 is adjusted so that the die set storage box 12 attached to the tip of the frame is located in front of the die set of the press body 1 when replacing the die set. Note that numerals 14 and 15 in FIGS. 2 and 4 are clamps for fixing the die set, and numeral 16 in FIGS.
is an operation handle for a connecting tool 17 for fixing the die set storage box 12 to the press body 1.

Next, as clearly shown in FIGS. 2 to 7, particularly in FIG. 7, the die set storage box 12 is equipped with constant direction motion means for always orienting the opening of the box in a constant direction. That is, this constant direction indicating movement means is constructed by suspending a chain 21 between a sprocket 18 fixed to the lower bearing portion 5 of the bracket 6 and a sprocket 20 secured to a key 19 on the support shaft 11 of the die set storage box 12. The numbers of teeth of the fixed sprocket 18 and the movable sprocket 20 are determined so that the opening of the rotating die set storage box 12 is always oriented in a fixed direction. 1st
Another embodiment is shown in FIG. 2, and in this embodiment, a sun gear 23 is attached to one end of a link 22 provided directly below the support arm 8, and this is attached to the lower bearing portion 5 of the bracket 6. fixed, and two planetary gears 24 at the center and other ends of the link 22,
25 and the outer planetary gear 25 is fixed to the support shaft 11 of the die set storage box 12. Although not shown, a belt may be used in other embodiments. In either embodiment, when the die set storage box 12 is rotated about the longitudinal axis 10, the die set storage box 12
By rotating the movable sprocket 20 or the movable planetary gear 25 fixed to the support shaft 11 at a predetermined speed in the direction M opposite to the rotation direction L of the box, the opening of the die set storage box 12 is always oriented in a fixed direction. It is something.

Further, a simulator 26 is disposed on the die set adjustment side of the press body 1 at a position outside the central horizontal axis. As shown in FIG. 13, this simulator 26 is a miniaturized version of the press body 1, and has almost the same structure except for the die set. That is, a bolster 26b serving as a die set fixing surface is provided approximately in the center of the frame 26a, an upper punch holder 26c that can be raised and lowered is provided above the bolster 26b, and a pull-down yoke 26d is provided below. In the figure, the reference numeral 26e indicates a clamp, and the reference numeral 26f indicates a transfer cylinder. Therefore, by attaching the die set D to the simulator 26 and operating it, it is possible to check whether the die set molds a specified molded product, and if an abnormality is confirmed, the die set is adjusted as appropriate.

The operation of the present invention having the above configuration will be explained with reference to FIGS. 8 to 11.
When a malfunction of the old die set D ₁ fixed on the bolster ₂ of
2 and 12 are pushed into the die set of the press main body and rotated so as to be positioned on the take-out surface, and then the handle 16 is operated to connect each die set storage box 12 and 12 to the press main body 1 with the connecting tool 17.
In this way, the die set storage box 12 is moved by the reaction force.
Hold it so that it does not separate from the press body 1 (Fig. 8).

Next, press the hydraulic cylinder 1 of the die set storage box 12 on which the adjusted new die set D ₂ is placed.
3 and feed the new die set D ₂ onto the bolster 2 of the press body, the clamp 14,
The old die set D ₁ released from the die set 15 is automatically fed onto the die set storage box 12 on the opposite side by a convex action. After that, disconnect the connector 17 and remove both die set storage boxes 12 and 1.
2 is turned over again to the die set adjustment position (FIG. 9).

Furthermore, remove the old die set from the die set storage box 12 on one side which has returned to the die set adjustment position.
D ₁ is transferred to the simulator 26, but in this case, the pair of front and rear die set storage boxes 12, 12 and the intermediate simulator 26 are aligned in a vertical line on the outside of the press body.
Moreover, since the front opening of the die set storage box 12 is oriented toward the cart, the die set can be moved simply by operating the hydraulic cylinder 13 on the back of the box, without using a forklift or the like as in the conventional case. Yes (Figure 10).

Old die set transferred to simulator 26
After adjusting D ₁ with the prescribed operation, if you place this adjusted old die set D ₁ on the die set storage box 12 on one side, you can easily transfer it to the die set D ₂ on the bolster 2 when necessary. Moreover, it can be replaced quickly (Fig. 11). In the illustrated embodiment, the die set is pushed in and taken out from the front to the rear of the press body, but it may be pushed in and taken out from the opposite direction.

Although FIG. 14 shows an embodiment in which the die set adjustment position is provided on the left side of the press body, the only difference from the first embodiment is in the placement location on the left and right sides, and the other configurations are exactly the same.

The present invention consists of the above configuration and operation,
A die set storage box is provided on the front and rear surfaces of one side of the press body via a support arm so that it can rotate and revolve, and a sliding member such as a roller is provided on the bolster of the press body, making it easy to take out the die set,
The insertion work can be performed simultaneously in one process, which has the effect of efficiently shortening die set replacement work. Next, since the die set storage box can always be oriented in a fixed direction, even when the box is located on the simulator side where replacement die sets are adjusted, the box opening will not be oriented toward the box movement path. Therefore, the die set can be easily adjusted by the simulator on the side of the press body away from the box movement path, and the die set can be replaced without interfering with the press operation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view of the powder molding press, FIG. 2 is a front view of the same, FIG. 3 is a right side view of the same, and FIG. FIG. 5 is a partially longitudinal sectional front view showing the installation state of the die set storage box in the die set push-in position, FIG. 6 is a vertical sectional side view taken along the line of FIG.
The figures are Fig. 5 - line cross-sectional plan view, Fig. 8 to 1
Fig. 1 is an explanatory diagram showing the process of exchanging and adjusting the die set, Fig. 12 is a plan view showing other constant direction movement means of the die set storage box, Fig. 13 is a front view showing the schematic structure of the simulator, and Fig. 14. FIG. 3 is a plan view showing another embodiment in which the arrangement of the die set storage box is changed. Explanation of symbols, 1... Press body, 2... Bolster, 3... Roller, 4, 5, 7... Bearing part,
6... Bracket, 8... Support arm, 9... Reinforcement rib, 10... Vertical shaft, 11... Support shaft, 12...
Die set storage box, 13... cylinder,
14, 15... Clamp, 16... Handle, 1
7... Connector, 18, 20... Sprocket, 2
1...Chain, 22...Link, 23...Sun gear, 24, 25...Planetary gear, 26...Simulator, L...Rotation direction of the die set storage box, M...Rotation direction of the die set storage box.

Claims (1)

[Claims] 1. A simulator for simulating a die set attached to a press machine for powder compaction is fixedly arranged in parallel with the press machine, and the press machine has a pair of supports each having a die set storage box at its tip. Arms are provided, one of which extends between one side of the simulator and one side of the press, and one of which extends between the other side of the simulator and the other side of the press. The base ends serving as fulcrums of the support arms are pivotally connected to the press machine so that they are arranged between the sides and sandwich the simulator or press machine. Each die set storage box is equipped with a cylinder capable of pushing out the stored die set onto the bolster of the simulator or press machine, and each of the support arms has an inner extension direction of each cylinder at each alignment position. 1. A die set changing device for a powder molding press, characterized in that a die set changing device for a powder forming press is provided with a fixed direction directing means for maintaining the attitude of a die set storage box so as to face each other.