US 9,849,499 B2Granted

Device and method for transferring workpieces into and out of a tool

AssigneeFeintool International Holding AG

InventorsAndreas Marti, Patrick Hofer

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Abstract

A rotary slide moves blanks cyclically from stage to stage of a cutting and processing tool. Work pieces are transferred in and out of the tool, without moving the slide in and out of the tool. The slide has a plurality of transfer openings and a discharge opening. Individual processing stages, including a discharge stage, are designed as separate components that support one another. The stages are arranged about a rotating axis of the slide. The transfer openings and the discharge opening lie in a circular path that coincides with circular paths of active elements of the cutting stage, the processing stages and the discharge stage. The openings have a distance from one another that is identical to the distance of the active elements in the circular paths.

Claims16

Dependent claims

A device for transferring work pieces into and out of a multi-staged cutting and processing tool, comprising:

an upper part having a cutting stage with at least one cutting punch, a guide plate and pressure plate;
a lower part having at least one cutting plate and pressure plate for cutting out a blank from a flat strip;
and
a plurality of processing stages lying in a circular path and comprising active elements of the upper and lower parts, the active elements of the upper part comprising at least one selected from the group consisting of the at least one cutting punch and frames of the upper part, the active elements of the lower part comprising at least one selected from the group consisting of the at least one cutting plate, an embossing anvil, the at least one pressure plate and frames for a processing cycle involving processes comprising at least one selected from the group consisting of hole punching, embossing, pre-shaping, drawing, and tooth-cutting;
and
wherein the flat strip is configured to be clamped in between the cutting plate and the guide plate when the upper and lower parts are closed and can be moved in a direction of travel of the strip when the upper and lower parts are in an open position, and
wherein blanks are configured to be moved cyclically from stage to stage by way of a slide, the slide being designed as a rotary slide comprising a plurality of transfer openings and a discharge opening, and the cutting stage and individual processing stages of said multi-staged cutting and processing tool being designed with a discharge stage as separate mutually-supporting components arranged about a rotating axis of the rotary slide supported at a lower block of the lower part, and
wherein the transfer openings and the discharge opening lie in a circular path that coincides with circular paths of the active elements of the cutting stage and the processing stages and active elements of the discharge stage, the transfer openings having a distance from one another that is identical to a distance between the active elements in the circular paths.

5 more elements

A method for transferring work pieces in a a multi-staged cutting and processing tool, in which blanks are cut out of a clamped flat strip in an upper part, which includes a cutting stage made up of at least one cutting punch, a guide plate and pressure plate, and a lower part, which includes at least one cutting plate and a pressure plate, the blanks being subjected to at least one selected from the group consisting of hole punching, embossing, pre-shaping, drawing, and tooth-cutting in succession in a plurality of processing stages lying in a circular path and including active elements of the upper and lower parts, the active elements of the upper part comprising at least one selected from the group consisting of the at least one cutting punch such as punches and frames of the upper part, and the active elements of the lower part comprising at least one selected from the group consisting of the at least one cutting plate, an ejector, an embossing anvil, the at least one pressure plate and frames, the method comprising:

moving the blanks by a rotary slide;
and
moving the flat strip cyclically in a direction of travel of the flat strip, when the upper and lower parts are open, wherein the blanks are transferred between the cutting stage and the processing stages when the tool is open by way of a reversible slide plate of the rotary slide, the reversible slide plate comprising transfer openings and a discharge opening, the rotary slide seizing the cut blanks by making first pivot motions by an amount equal to an arc distance between the cutting stage and the processing stages and bringing the cut blanks to a first processing stage for processing in second motions that are opposite to the first pivot motions and of identical arc distance, wherein at the same time the blanks from the first processing stage and other processing stages are shifted to subsequent respective processing stages, and respective and the finished work pieces are discharged.

Dependencies are inferred from the claim text.

Facts

Application: 14/467,427Filed 25 Aug 2014
Priority: EP 1300419326 Aug 2013
Published: US 2015/0053059 A126 Feb 2015
Granted: 26 Dec 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

B21D 45/003
Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass: in punching machines or punching tools
B21D 28/00
Shaping by press-cutting
B21D 43/05
By means in mechanical engagement with the work: specially adapted for multi-stage presses
B21D 43/14
By means in mechanical engagement with the work: by turning devices, e.g. turn-tables