DE2723848A1 - Press with rams on which press tools are mounted - has at least one central table with press tools mounted on its top and bottom - Google Patents

Abstract

The press consists of a cross beam (3) supported on two pillars (2). A ram (4) is mounted in the cross beam, while a press table (5) is mounted on the base of the machine. Both ram and press table have a number of swallow tail grooves on which press tools (6, 7) can be mounted. A centre table (8) is mounted between the ram and the press table. The height of the centre table can be adjusted. Press tools are mounted on the top and bottom face of the centre table. These tools complement the tools which are mounted on ram and press table.

Description

"Press"

The invention relates to a press, each with pressing tools Ram and lower press table as well as with at least one middle table that is attached to his Top and bottom pressing tools carries.

The DT-OS 22 47 093 is a particular one for the production of chipboard Or the like. Serving plate press as known to be found, which an upper yoke, a Has lower yoke and a stationary center hole on its top and bottom is acted upon by separate pre-stamps. With such a press is true the production of two pressed parts in one operation is possible, but this is necessary The structural effort required is very large, because both in the upper yoke and in the lower yoke separate press stamps must be arranged.

The present invention was therefore based on the object of a press of the type described in such a way that with only little structural Additional effort in one work step, the production of two work pieces or workpiece sets is possible.

This object is achieved according to the invention in that the center table is arranged variable in height and moved during the pressing process by the ram will.

In a preferred embodiment of the invention, a lifter is provided, through which the center table returns to its normal position after a pressing process has been completed is traceable.

The lifter can either be controlled by pressure cylinders or but are spring-loaded.

Such a press can advantageously after two different Processes that only require a different control are operated. and although it is once possible that the upper part of the upper tool attached to the ram after the production of the upper pressed part on a stop in the lower part of the upper Tool moves and only then does the center table to manufacture the lower pressed part is moved. The prerequisite for this process is that the lifter on the Exercise center table a support force that is at least slightly greater than that during the actual prening process through the ram on the top of the center table force exerted. Furthermore, the holding force must then be used to manufacture the second pressed part of the lifter due to the impact force iiherwindon.

Another possible method of operating such a press can be seen in the fact that the plunger takes the center table with it during its downward movement and both pressed parts are manufactured in the region of the bottom dead center of the ram.

The object of the invention is to be based on one in the Drawing illustrated embodiment will be explained in more detail. The drawing shows a press according to the invention in a front view4 partially in section.

The press t shown in the drawing has in a known manner a press head 3 resting on a pair of lateral uprights 2, in which the ram 4 is stored. The bottom of the ram 4 and the top of the lower press table 5 have dovetail guides for receiving pressing tools 6, 7. Between The ram 4 and lower press table 5 is a height-adjustable, as a press tool carrier Serving middle table 8 is arranged, the lower part 6b of the upper pressing tool 6 and on its underside daa upper part 7a of the lower pressing tool 7 wears. To guide the middle table 8 rods 9 are provided, which the middle table 8 penetrate and for the guide hole also in the upper part 6a of the upper press tool 6 are provided.

The lifter 10 is formed in the illustrated embodiment of columns 11, which are supported on a pressure cheek 12, on the controllable pressure cylinder 13 act.

As stops for the limitation of the paths in the individual phases stop surfaces 14 are used in each case for the pressing process.

Of course, instead of a height-adjustable central table several middle tables can also be provided without affecting the basic The structure and the possible working methods of such a press would change something.

The center table can be an integral part of the press or be formed by the tool, possibly with the addition of an intermediate plate.

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Claims (6)

"Press" claims press with each ram carrying pressing tools and lower press table as well as with at least one middle table, which is at its upper. and underside carries pressing tools, characterized in that the center table (8) is arranged to be adjustable in height and during the pressing process by the ram (4) is moved. 2. Press according to claim 1, characterized in that a lifter (10) is provided through which the center table (8) after completion of a pressing process can be returned to its normal position. 3. Press according to the response 1 and 2, characterized in that the lifter (10) can be actuated via controlled pressure cylinders (13). Press according to claims 1 and 2, characterized in that the Lifter is spring loaded. 5. The method for operating a press according to claim 1, characterized in that that the ram (ti) attached upper part (6a) of the upper tool (6) after Manufacture of the upper pressed part on a stop (14) in the lower part (6b) of the upper Tool moves and only then does the center table (8) for the production of the lower pressed part is moved. 6. The method for operating a press according to claim 1, characterized in that that the plunger (1i) entrains the center table (8) during its downward movement and both pressed parts are manufactured in the area of the bottom dead center of the plunger (4).