JPH0237280B2 - FUNMATSUSEIKEIPURESUNODAISETSUTOKOKANSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exchange device for extremely simplifying die set exchange in a powder molding press.

The structure of a conventional powder molding press body will be explained based on FIGS. 1 to 3.

In FIG. 1, a powder molding press main body 1 includes a frame 3 having a bottom stand 2, a table holder 5 which is attached to the bottom stand 2 so as to be movable up and down and moved up and down by a cylinder 4, and a table holder 5 which is movable up and down by a cylinder 4. A die set 6 is removably installed on the holder 5, an upper ram 8 is attached above the die set 6 so as to be movable up and down with respect to the rod 7 for the product extrusion cam m on the bottom stand 2, and the upper ram 8 (see Japanese Utility Model Publication No. 50-2141).

The die set 6 includes a base-like holder 10 fixed at a constant height within the powder molding press main body 1;
A guide rod 1 that vertically passes through the base-like holder 10
a table 12 fixed to the lower end of the guide rod 11; and a die holder 13 fixed to the upper end of the guide rod 11.
and the die 14 mounted in the die holder 13.
and a lower punch P mounted on the base-like holder 10 so as to be inserted into the die 14, and a lower punch P mounted so as to be slidable up and down with respect to the guide rod 15 planted on the die holder 13, It also consists of an upper punch 16 attached to an upper punch holder H that is moved up and down by the upper ram 8.

In this die set 6, the table 12
is the bolt 17 facing upward as shown in Figures 1-2.
Through a nut-cum-bolt 18 screwed into this bolt 17 from below, and a height adjustment ring 19 screwed around the nut-cum-bolt 18,
It is placed and fixed on the table holder 5.

A locking plate E is fixed to the upper end of the bolt 17, and the table 12 is attached to the locking plate E so that it can be slid in the horizontal direction and removed from the table. In this case, ring 1
Numeral 9 is in contact with the top surface of the table holder 5 and acts as a lock nut between the table 12 and the die holder 13. When the screwing position of the bolt 18 that also serves as a nut and the ring 19 around it is changed with respect to the table holder 5, The lowermost positions of the table 12 and the die holder 13 can be changed via the nut/bolt 18 and the bolt 17.

In the conventional powder molding press body configured as described above, when replacing the die set 6,
The table 12 is moved to slide horizontally and is removed from the locking plate E fixed to the upper end of the bolt 17. At this time, the upper punch holder H for the upper punch 16 is also moved in the horizontal direction and removed from the upper ram 8. Therefore, everything from the table 12 to the upper punch 16 can be replaced at once in an integrated state.

Conventionally, in order to replace the die set 6 in this way, a trolley (not shown) of a predetermined height is used when the die set 6 is removed from or brought close to the powder molding press main body 1, and the die set 6 is placed on this trolley. It is made to slide so that the table 12 is placed on it. However, since the height of the mounting surface of the cart is constant, the vertical position of the mounting surface of the table 12 must match the mounting surface of the cart. Therefore, when the table 12 and die holder 13 are at the lowest position h (Fig. 3), that is, when the molded product A is knocked out, the mounting surface of the table 12 and the cart It is made to match the mounting surface.

However, if the threading height of the bolt 18 that also serves as a nut for height adjustment is changed, the lowest position of the mounting surface of the table 12 and the height of the mounting surface of the cart will not match. , there is a problem that it is extremely difficult to place it on a trolley. The reason for changing the threading height of the nut/bolt 18 is to change the level of the lower punch P at its lowest end when the lower punch P is chipped and re-ground and its dimensions are changed. This is because adjustments need to be made. Another reason is that the dimensions of each die set 6 differ slightly due to machining errors in the lower punch P and the die set 6 itself, so it is necessary to adjust the installation level (height) of the entire die set 6 each time. Because there is. In reality, the level h changes by ±several mm.

Therefore, it is necessary to perform an operation to align the mounting surface of the table 12 with the mounting surface of the cart.

For this reason, conventionally, blocks (not shown) of various sizes are prepared, and blocks of the required size are selected from these blocks to be mounted on the base-like holder 1.
0 and the die holder 13 to finely adjust the height of the table 12 at its lowest end.

However, it is uneconomical to prepare blocks of various dimensions, and it is time-consuming to select a block with appropriate dimensions and insert it between the base-like holder 10 and the die holder 13. However, there is a problem in that the task of replacing the die set 6 is extremely troublesome.

The present invention has been made to solve these conventional problems, and it is an object of the present invention to provide a die set changing device for a powder molding press that makes it extremely easy to attach and detach the die set.

The present invention will be described below based on an embodiment shown in FIGS. 4 to 6. Note that the same reference numerals will be used to describe the same parts as in the prior art.

The die set changing device for a powder molding press according to the present invention includes a powder molding press main body 1, a die set 6 that is removably installed in the powder molding press main body 1, and a die set that is configured to replace the die set so that the die set 6 can be placed thereon. The powder molding press body 1 in a lateral position of 6
a pantograph-shaped transfer table 30 attached to the
It comprises a driving device 32 such as a cylinder that raises and lowers the transfer table 30 so that the height of the mounting surface 31 of the transfer table 30 matches the height of the mounting surface of the die set 6.

The transfer table 30 is attached to the powder molding press main body 1 via a table-shaped bracket 33.
Since the transfer table 30 is moved up and down by the drive device 32, its mounting surface 31 can be aligned with the mounting surface of the table 12 at a desired height. In this embodiment, a positioning plate 34 is provided integrally with the locking plate E fixed to the upper end of the bolt 17, and the surface of the plate 34 is in contact with the bottom surface of the table 12.
When the lower surface of the transfer table 30 comes into contact with the surface of the table 12, the placement surface 31 of the transfer table 30 and the placement surface of the table 12 are automatically aligned.

Further, in this embodiment, the transfer table 30 is connected to the drive device 32.
It is stopped at various points in the horizontal direction by . For example, as shown in FIG. 4, there is a first position closest to the side of the die set 6 installed in the powder molding press main body 1, and a second position that is laterally away from the die set 6 as shown in FIG. 2 and a third position further laterally away from the second position as shown in FIG. At the first position, the die set 6 is transferred between the transfer table 6 and the powder molding press main body 1, and at the second position, the transfer table 30 is transferred by a crane (not shown) or the like.
Work such as suspending the die set 6 from or onto the transfer table 30 is performed. Further, at the third position, the die set 6 is transferred between the transfer table 30 and the cart 35, etc. Note that the second position may be omitted. Moreover, the trolley 35 is connected to the rail 3
The carriage 35 can also be provided with a plate similar to the positioning plate 34.

In addition, when the die set 6 is transferred in the lateral direction on the transfer table 30, the die set 6 is placed on the guide rail 3, for example.
The middle part may be supported by 7,
Further, rollers may be provided on the mounting surface 31 of the transfer table 30 and the guide rails 37.

The reference numeral 40 indicates a guide block, which guides the die set 6 from the tip of the upper ram 8 when the die set 6 is mounted on the press body 1.
This is a rod for positioning the die set 6 so that the upper surface thereof is slightly lower, and is removed after the die set 6 is mounted on the press body 1.

As is clear from the configuration of the above embodiment, since the transfer table 30 is moved up and down vertically or diagonally,
It is possible to freely align the mounting surface 31 with the mounting surface of the die set 6, and there is no need to prepare blocks of various sizes as in the conventional case.

Furthermore, when the transfer platform 30 is movable laterally and can be stopped at various locations, the die set 6 can be transferred between cranes, carts, etc. as desired.

As explained above, according to the present invention, a pantograph-shaped transfer table that moves up and down is attached to the powder molding press body, so the die set can be placed at any height, making die set replacement extremely easy. You will get the advantage of

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of a conventional powder molding press main body, Fig. 2 is an explanatory view of the main parts of Fig. 1, and Fig. 3 is an explanatory view of the main parts of the press main body of Fig. 1 showing a molded product knocked out state. 4 are schematic explanatory diagrams of a die set exchanging device according to an embodiment of the present invention, and FIGS. 5 and 6 are explanatory diagrams of the operation of the exchanging device of FIG. 4, respectively. 1... Powder molding press main body, 6... Die set, 10... Base-like holder, 11... Guide rod,
12...Table, 13...Die holder, 14
...Die, 15...Guide rod, 16...Top punch,
30...Transfer table, 31...Placement surface, 32...Drive device, 33...Bracket, 34...Positioning plate, 35...Dolly, 36...Rail, E...
Locking plate, H... Upper punch holder, P...
Lower punch.

Claims (1)

[Scope of Claims] 1. A powder molding press main body, a die set removably installed in the powder molding press main body, and the powder molding press main body at a side position of the die set so that the die set can be placed thereon. A powder molding press comprising a pantograph-shaped transfer table attached to a powder molding press, and a drive device that raises and lowers the transfer table so that the height of the mounting surface of the transfer table matches the height of the mounting surface of the die set. die set converter. 2. The transfer table is moved by a drive device to two positions: a first position closest to the side of the die set installed in the powder molding press, and a third position furthest to the side from the die set. 2. Device according to claim 1, characterized in that it can be stopped at . 3. The transfer table is moved by a drive device to a first position closest to the side of the die set installed in the powder molding press, a third position furthest laterally from the die set, and 2. Device according to claim 1, characterized in that it can be stopped at three second positions between the first and third positions of the apparatus.