DE3429690A1 - TOOL WITH DIRECT OPERATION - Google Patents

Description

PATENT LAWYERS DIERK HANSMANN - GEORG HANSMANN

DlPL-INQ. EUROPEAN PATENT ATTORNEY (t 1977)

JESSENSTFtASSE 4 2000 HAMBURG 50 TELEPHONE (040) 38 24 57

P.4445

Applicant; Dieter Blum
Grasweg 3
2300 Altenholz / Klausdorf

Direct actuation tool

The invention relates to a tool with direct actuation, for example for punching, bending or drawing of sheet metal, consisting of a lower tool part with base plate and a cutting and / or mold plate, a guide frame, a holding plate for fastening the tools, such as Cutting and shaping stamps, connected to a pressure plate to be actuated, which in the rest position outside the cutting or shaped plate is held by elements such as springs or cylinders and one Tool head with a head plate.

It is already known to use mechanically operated tools on presses, especially with single and Small series production to use. It has been shown that presses of this type are relatively

VEREINS- UND WESTBANK AG 11/14230 (BLZ 200 300 00) DEUTSCHE BANK AG 65 06 224 (BLZ 200 700 00) POST CHECK: HAMBURG .76 65-205 (BLZ 200 100 20)

are expensive due to the permanently assigned drive cylinder, which act with their ram on the tool. This makes it common to only create dedicated tools.

The object of the invention is to create a generic tool that can be used independently made possible by the drive cylinder and thus ensures versatile use.

This object is achieved according to the invention in that between the pressure plate and the head plate a film-like separating element is arranged for the sealing formation of separate spaces and the head plate has a pressure connection leading to the separating element, which is connected to a hydraulic supply or a pneumatic pressure supply can be connected.

This makes it possible to use the printing plate directly as a stamp for the printing medium and the space to be filled with pressure medium above the separating element as a correspondingly expanding space. at this inventive training a relatively small amount is required, and furthermore, the The advantage created that each tool in a production line or at each other workstation without a separate one Press can be switched on.

A simple design is created in that the separating element between the head plate and the guide frame can be clamped in a sealing manner.

Alternatively, for simple replacement, it is proposed that the separating element seal on the head plate is arranged.

The drawing shows an exemplary embodiment of the invention as a sectional illustration in the form of a punching tool shown schematically with punch and die.

In the arrangement shown, a tool frame is made up of a base plate 1 with a cutting plate 2 formed while the upper tool frame is supported by a guide frame 3 and by a head plate 4 is formed. A vertically movable pressure plate 5 is provided below the head plate a punch holding plate 6 is arranged. The punch holding plate 6 carries as processing tools in this In the case of a punch 7 and a forming punch 8, there is also a stripper plate 9 over springs 14 assigned to the punch holding plate 6.

Between the machining tools 7, 8 and the stripper plate 9, there is a space 10 for a workpiece holder arranged, which has a guide bar 11 for a sheet metal strip to be processed.

To operate the pressure plate 5, the head plate 4 is provided with a bore 12 as a pressure connection, the is connected to a hydraulic unit. Via a between the guide frame 3 and the top plate 4 clamped separating element 13 and a film-like, flexible material, separate spaces are created, so that when hydraulic fluid is supplied through the bore 12, the space between the separating element 13 and Head plate 4 enlarged and the pressure plate 5, the processing tools 8, 9 over the punch holding plate 6 presses down for the machining process.

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Claims (3)

PATENT ADVOCATE DIERK HANSMANN - GEORG HANSMANN DlPL-ING. EUROPEAN PATENTATTORNEY (t 1977) JESSENSTRASSE 4 ■ 2000 HAMBURG 50 · TELEPHONE (040) 38 24 57 P.4445 Applicant: Dieter Blum
Grasweg 3
2300 Altenholz / Klausdorf Claims Tool with direct actuation, e.g. for punching, bending or drawing sheet metal from a lower tool part with a base plate and a cutting and / or shaped plate, a Guide frame, a holding plate for fastening the tools, such as cutting and shaping punches, connected with a pressure plate to be actuated, which in the rest position outside of the cutting or forming plate is held by elements such as springs or cylinders and a tool upper part with a Head plate, characterized in that between the pressure plate (5) and the head plate (4) there is a sheet-like Separating element (13) is arranged for the sealing formation of separate spaces and the The head plate (4) has a pressure connection (12) which leads to the separating element (13) and which is connected to a hydraulic supply or a pneumatic pressure supply can be connected. VEREINS- UND WESTBANK AG 11/14230 (BLZ 200 300 00) DEUTSCHE BANK AG 65 06 224 (BLZ 200 700 00) POST CHECK: HAMBURG 176 66-205 (BLZ 200 100 20) 2. Tool according to claim 1, characterized in that the separating element (13) between the head plate (4) and the guide frame (3) can be clamped in a sealing manner. 3. Tool according to claim 1, characterized in that the separating element (13) on the head plate (4)
is arranged sealingly.