DE202013105848U1 - Device for gripping a flat semifinished product and transport device - Google Patents

Abstract

Device for gripping a flat semifinished product (1), preferably for gripping a fiber mat (1), with a gripping unit (2), wherein the gripping unit (2) has a suction cup (3) with a peripheral edge (4) which extends over at least one Pressure line (5) by applying a negative pressure or an overpressure in an intake or a repulsion state can be brought and, wherein the peripheral edge (4) in the intake state includes a portion (1 ') of the sheet semifinished product (1), characterized in that the Gripping unit (2) further comprises at least one fixing needle (6), wherein the fixing needle (6) in the suction state at least partially penetrates into the semifinished product (1) and the fixing needle (6) is arranged in relation to the Sauglocke (3) that the fixing needle (6) in the suction state, the partial area (1 ') relative to the gripping unit (2) fixed in position.

Description

The present invention relates to a device for gripping a flat semifinished product, preferably for gripping a fiber mat, with a gripping unit, wherein the gripping unit has a suction cup with a peripheral edge, which via at least one pressure line by applying a negative or a positive pressure in a suction or a repelling state can be brought and, wherein the peripheral edge in the intake state includes a portion of the sheet semifinished product. Furthermore, part of the invention is a transport device with a device according to the invention.

A generic device can the DE 10 2011 056 033 A1 be removed. A disadvantage of such a device of the prior art, however, is that in particular in a horizontal to be included or to be held at an angle semis, the suction cup can be deformed due to a laterally acting gravity, resulting in positioning difficulties or positioning inaccuracies. The suction cup can even be deformed so that the suction cup can draw air and thereby lose its grip.

Object of the present invention is therefore to further develop an aforementioned device for gripping a flat semi-finished product of the prior art so that it allows a more reliable and positioning accurate gripping of flat semi-finished products.

This object is achieved in that the gripping unit further comprises at least one fixing needle, wherein the fixing needle at least partially penetrates the semi-finished product in the intake state and the fixing needle is arranged in relation to the Sauglocke, that the fixing needle in the intake state the portion opposite the gripping unit fixed in position. The additional support of the semifinished product via a fixing needle makes it possible to provide a device for gripping a flat semifinished product, which allows a more reliable and positionally accurate gripping of flat semi-finished products.

The at least one fixing needle is preferably disposed within the suction cup and enclosed by this. Alternatively or in combination, the at least one fixing needle or a plurality of fixing needles can be arranged next to the suction bell. In the event that the at least one fixing needle or the plurality of fixing needles is or are arranged next to the suction cup, the fixing needle or fixing needles is preferably removed from the peripheral edge of the suction cup at a distance of at most three times the suction cup diameter. Preferably, the at least one fixing needle or the Fixiernadeln then from the peripheral edge of the suction cup a distance of not more than three times the suction cup diameter. By a correspondingly dimensioned distance between the fixing needle or the fixing needles to the edge of the suction cup ensures that the fixing needle or the fixing needles fix the enclosed by the edge of the suction cup portion of the sheet semifinished against the gripping unit in position.

The suction cup can be designed to be elastic and yielding. The suction cup can in this case be designed in particular as bellows suction bell.

In the suction state, an end region of the fixing needle preferably projects beyond the edge of the suction bell. In the repulsive state, the end region of the fixing needle is preferably below the edge of the suction cup. Suction bell and length or protrusion of the fixing needle is in relation to the edge of the suction cup as above preferred to adjust, so that an optimal function of the device is ensured.

In an advantageous embodiment of the invention, the at least one fixing needle may be resiliently mounted in the loading direction. This ensures that the fixing needle penetrates into the semi-finished product with a respectively defined penetration force when the gripping unit is placed on the semi-finished product.

The flat semifinished product is preferably a semi-finished product made of a plastic material, wherein the semifinished product made of a plastic material preferably has a fiber reinforcement. The flat semi-finished product may be a semi-finished product made of a plastic material. The semifinished product made of a plastic material may in particular have a fiber reinforcement embedded in a plastic matrix. The fiber reinforcement may consist partially or completely of continuous fibers, which may be unidirectionally oriented or formed as a fabric. The plastic matrix may comprise a matrix of a thermoplastic plastic material or of a thermosetting plastic material. The fiber reinforcement can be formed by glass fibers, carbon fibers, aramid fibers, basalt fibers, mineral fibers, fibers from renewable resources, metal fibers and / or by polymer fibers. The thermoplastic material may include polyamide (PA), especially polyamide 6 and polyamide 6.6, polypropylene (PP), polyethylene (PE), POM (polyoxymethylene), polyphenylene sulfide (PPS), polyethersulfone (PES), polyetheretherketone (PEEK), polyetherimide (PEI) , Polyethylene terephthalate (PET), comparable engineering or high temperature plastic materials, or combinations of the aforementioned plastic materials. A thermoset Plastic material may include aminoplasts, phenolic resins, epoxy resins, crosslinked polyacrylates, polyurethanes, and other crosslinkable polymers.

When using a fiber mat as a flat semi-finished product, the fiber reinforcement of the fiber mat may partially or completely consist of continuous fibers, which may be unidirectionally aligned or formed as a fabric. The fiber mat may comprise a matrix of a thermoplastic plastic material or of a thermosetting plastic material. The fiber reinforcement of the fiber mat can be formed by glass fibers, carbon fibers, aramid fibers, basalt fibers, mineral fibers, fibers from renewable resources, metal fibers and / or by polymer fibers. The thermoplastic material may include polyamide (PA), in particular polyamide 6 and polyamide 6.6, polypropylene (PP), polyethylene (PE), POM (polyoxymethylene), polyphenylene sulfide (PPS), polyethersulfone (PES), polyetheretherketone (PEEK), polyetherimide (PEI) , Polyethylene terephthalate (PET), comparable engineering or high temperature plastic materials, or combinations of the aforementioned plastic materials. A thermoset plastic material may include aminoplasts, phenolic resins, epoxy resins, crosslinked polyacrylates, polyurethanes, and other crosslinkable polymers.

Part of the invention is further a transport device with a device according to the invention, in particular with a device according to one of claims 1 to 8, and at least one spatially movable handling unit connected to the gripping unit. The spatially movable handling unit may in particular be a multi-axis robot system.

In the following, the invention will be explained with reference to exemplary embodiments illustrative figures. Same or functionally identical elements have the same reference numerals.

Show it:

1 a three-dimensional view of a first embodiment of a device according to the invention;

2 a cross-sectional view along the section line AA 1 ;

3 a three-dimensional view of a second embodiment of a device according to the invention;

4 a cross-sectional view along the section line BB 3 ,

The 1 shows a three-dimensional schematic representation of a device according to the invention for gripping a flat semi-finished product 1 (not shown in this figure) with a gripping unit 2 , wherein the gripping unit 2 a suction cup 3 with a circumferential edge 4 having. The suction cup 3 is via at least one pressure line 5 by applying a negative pressure or a positive pressure in a suction state or a repelling state can be brought, wherein the peripheral edge 4 in the intake state, a partial area 1' of the flat semi-finished product 1 includes. The gripping unit 2 has at least one fixing needle 6 (Four fixing needles in this embodiment), wherein the fixing needles 6 in the intake state at least partially in the semifinished product 1 to penetrate (cf. 2 ) and the fixing needles 6 so in relation to the Sauglocke 3 are arranged that the fixing needles 6 in the intake state the sub-area 1' opposite the gripping unit 2 position fixing (cf. 2 ). The fixing needles 6 are next to the suction cup 3 arranged and point from the circumferential edge 4 the suction cup 3 a distance X of at most three times the suction block diameter D (see. 2 ). The suction cup 3 is elastic and yielding. The suction cup 3 is as bellows suction bell 3 educated.

In 2 can be seen in the cross-sectional representation that the fixing needles 6 about bolting points 22 in relation to the suction cup 3 on a plate-shaped needle holder 20 can be screwed. Overall, a plate-shaped needle holder 20 also via bolting points 21 in relation to the pressure line 5 be positioned and screwed.

The 3 shows a further embodiment of a device according to the invention, wherein the fixing needle 6 here within the suction cup 3 arranged and enclosed by this. The suction cup 3 is also an elastic and flexible bellows suction bell 3 educated. The fixing needle 6 can be resiliently mounted in the direction of loading.

In the 4 illustrated cross-sectional view along the section line BB 3 shows that inside the pressure line 5 the fixing needle 6 with the pressure line 5 is connected via a retaining ring and the retaining ring has openings for the outflow or suction of air. The fixing needle 6 penetrates at least partially into the semi-finished product 1 one and the fixing needle 6 is so in relation to the Sauglocke 3 arranged that the fixing needle 6 in the intake state the sub-area 1' opposite the gripping unit 2 fixed in position.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102011056033 A1 [0002]

Claims (9)

Device for gripping a flat semifinished product ( 1 ), preferably for gripping a fiber mat ( 1 ), with a gripping unit ( 2 ), wherein the gripping unit ( 2 ) a suction cup ( 3 ) with a peripheral edge ( 4 ), which via at least one pressure line ( 5 ) can be brought into a suction state or a repulsion state by applying a negative pressure or an overpressure and, wherein the peripheral edge ( 4 ) in the intake state, a partial area ( 1' ) of the flat semifinished product ( 1 ), characterized in that the gripping unit ( 2 ) at least one fixing needle ( 6 ), wherein the fixing needle ( 6 ) in the intake state at least partially into the semifinished product ( 1 ) penetrates and the fixing needle ( 6 ) in such a way in relation to the Sauglocke ( 3 ) is arranged that the fixing needle ( 6 ) in the intake state the subregion ( 1' ) opposite the gripping unit ( 2 ) fixed in position. Device according to claim 1, characterized in that the fixing needle ( 6 ) within the suction cup ( 3 ) is arranged and enclosed by this. Device according to claim 1, characterized in that the fixing needle ( 6 ) next to the suction cup ( 3 ) is arranged. Device according to claim 3, characterized in that the fixing needle ( 6 ) from the peripheral edge ( 4 ) of the suction bell ( 3 ) has a distance (X) of at most three times the suction block diameter (D). Device according to one of the preceding claims, characterized in that the suction cup ( 3 ) is designed to be elastic and yielding, in particular as bellows suction bell ( 3 ) is trained. Device according to one of the preceding claims, characterized in that in the suction state an end region ( 6 ' ) of the fixing needle ( 6 ) over the edge ( 4 ) of the suction bell ( 3 ) protrudes and in the repulsive state the end region ( 6 ' ) below the edge ( 4 ) lies. Device according to one of the preceding claims, characterized in that the fixing needle ( 6 ) is resiliently mounted in the loading direction. Device according to one of the preceding claims, characterized in that the flat semi-finished product ( 1 ) is a semi-finished product made of a plastic material, in particular a semi-finished product made of a plastic material having a fiber reinforcement. Transport device with a device according to one of claims 1 to 8 and at least one with the gripping unit ( 2 ) spatially movable handling unit.

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