DE2945505A1 - LEVELING MACHINE FOR SHEETS AND TAPES - Google Patents

Description

PATENTANWÄLTE FW! - (EMMERICH GEPD MÜLLER · D. GROSSE ■ F. POLLMEIER

November 09, 1979 8.2688-the / kö

SCHLOEMANN-SIEMAG AKTIENGESELLSCHAFT, 4000 Düsseldorf 1

Straightening machine for sheets and strips

The invention relates to a straightening machine for sheets and strips with upper and lower individually adjustable intensive forming rollers and these downstream upper and lower straightening rolls. The invention is based on the DE-OS 27 31 2 34 known straightening machine.

When designing straightening machines for sheets and strips, sheet thickness, material yield point and sheet width are decisive. The straightening roll diameter and pitch are determined either from the maximum straightening force or from the force to be transmitted maximum torque determined. With the determination of the straightening roll pitch is taking into account the necessary maximum deformation (overstretching) of the sheet already given the minimum sheet thickness to be straightened and thus the to Directional thickness range is determined. To straighten very wide, thick sheets, e.g. because of the moments to be transferred, large drive spindles and, to achieve the required torsional rigidity, large roller diameters and thus a larger pitch than with narrower sheets can be selected. However, this increases the ability to straighten thin sheets highly limited.

13 0 0 21/0315

PATENT LAWYERS F.W. t-'EMVtRICH - GFhO MülLEP D. GROSSE F. POLLMEIER

November 09, 1979 - & - 8.2688-the / kö

It is already known that the straightening range of sheet metal straightening machines can be expanded to thinner sheets in that the sheet after a maximum bending by intensive deforming rollers is deformed by leaps and bounds less by downstream aligning rollers. In a known straightening machine are therefore the upper and lower straightening rolls can be individually adjusted vertically. To improve the sheet metal infeed between the Intensive forming rollers are preceded by a driver that gives the tip of the sheet a thrust.

The aim of the invention is a sheet metal straightening machine in which the straightening range can be expanded in a structurally simpler manner to even thinner sheets or thin sheets with higher strength and an improvement in the rigidity of the machine frame is achieved.

According to the invention, this is achieved in that one of at least one infeed roller, a thinner, non-driven, Intensive forming roller supported by support rollers and an intensive forming unit existing downstream of this pair of drive straightening rollers is received in a main frame of the straightening machine upstream special stand.

Due to the inventive arrangement of the intensive deformation unit Outside the main frame of the straightening machine, the main frame can be made shorter. The individual adjustment of the rollers of the intensive forming unit enables the straightening rollers to be adjusted together within the main frame and thus a reduction in the overall height. This leads to a compact main frame of great rigidity, which is particularly important for the Straightening thick metal sheets is required.

130021/0315

PATENT LAWYERS F.W. HEMMERICU G2RD MCLLER · D. GROSSE · F. POLLMEIER

November 09, 1979 - / - 8.2688-the / kö

The intensive forming unit is switched on to straighten thin sheets. This makes it possible to use an intensive deforming roller with considerably less for the maximum deformation of thin sheets Diameter than the straightening rolls stored in the main frame. The sheet is inside the intensive forming unit promoted by the pulling driver, whose rollers also act as straightening rollers. In this way the straightening area becomes considerably thinner sheets or thinner harder sheets compared to the known straightening machines expanded.

According to a further feature of the invention, an intensive forming roller and associated with the lower drive straightening roller mechanical adjustment devices. The adjustment devices can be advantageous adjustable wedges may be provided.

The infeed roller and the upper drive straightening roller can be adjustable by means of pressure cylinders, the adjustment path in The direction of the sheet metal surface can be limited by mechanical stops is.

Alternatively, the intensive forming roller can be mounted above and the infeed roller below the sheet metal passage. 25th

Another advantage is seen in the fact that the stand of the intensive straightening unit with the main frame of the straightening machine is releasably connected.

A particularly simple construction is achieved in a further embodiment of the invention in that the in the main frame stored straightening rolls can be adjusted together and the lower straightening rolls are fixedly mounted.

130021/0315

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PATENT LAWYERS F.W. HEMMERICH · GttiD MULLEri · D. GROSSE ■ F. POLLMEIER

November 09, 1979 - / - 8.2688-the / kö

In the drawing, an embodiment of the invention is shown. It shows the longitudinal section of a straightening machine with upstream intensive forming unit.

In the illustrated straightening machine, lower straightening rolls 1 with their support rolls 2 are mounted on a lower roll frame 3, which is anchored on a lower cross member 4 of a main frame 5. Upper straightening rollers 6 are equipped with support rollers 7 mounted on an upper roller frame 8, which is guided on an upper cross member 9 of the main frame 5 and arranged thereon Spindle drives 10, 11 is adjustable in height and tiltable.

A stand 12 of an intensive forming unit is on the outside of the main frame 5 connected. The intensive forming unit consists of an upper infeed roller 13, a lower, non-powered intensive forming roller supported by support rollers 14 15 with a smaller diameter than the straightening rollers 1, 6 and a downstream pair of drive straightening rollers 16, 17.

Chocks 18, 19 of the infeed roll 13 and the upper drive straightening roll 16 are jointly guided between each side wall of the stand 12 and the main frame 5. At the chocks 18, 19 piston rods 20, 21 of adjusting cylinders 22, 23 attached to the stand 12 are articulated. The employment the chocks 18 are limited in the direction of the sheet metal surface by stops 24.

The, Intensiwerformwalze 15 is mounted in chocks 25, which together with chocks 26 of the lower drive straightening roll 17 are guided between the stops 24 arranged on the stand 12 and the side wall of the main frame 5. The A-

130021/0315

PATENT LAWYERS F.W. HEMMERICH GERD MÜLLER D. GROSSE F. POLLMEIER

November 09, 1979 - ff'- 8.2688-the / kö

Building pieces 25 are via spacers 27 on a longitudinally displaceable Wedge 28 is adjustably supported, which is displaceable on a stationary wedge 29. In the same way are the chocks 26 supported adjustable via spacers 30 on a slidable wedge 31, which on a stationary wedge 32 slides.

The straightening machine is operated as follows: Thick metal sheets are removed from the roller table 33 through the open intensive forming unit promoted to the straightening rollers 1, 6 and directed there.

To straighten thinner sheets, the intensive forming unit is activated as soon as the tip of the sheet is in the area of the drive straightening rollers 16, 17 has arrived. Then the drive straightening rollers 16, 17 pull the sheet metal through the intensive forming unit and push the metal tip between the driven straightening rollers 1, 6 for final straightening.

130021/0315

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Claims (7)

PATENT LAWYERS F.W. ^ FMMtRICH · GFHO MöuLER · D. GROSSE · F. POLLMEIER November 09, 1979 -JiS- 8.2688-the / kö SCHLOEMANN-SIEMAG AKTIENGESELLSCHAFT, 4000 Düsseldorf Patent claims 1.J straightening machine for sheets and strips with upper and lower ^ - individually adjustable intensive forming rollers and these downstream upper and lower straightening rolls, characterized in that that one of an infeed roller (13), a thinner, non-powered, Intensive forming roller (15) supported by support rollers and a downstream pair of drive straightening rollers (16, 17) existing intensive deformation unit in a special one arranged in front of a main frame (5) of the straightening machine Stand (12) is added. 2. straightening machine according to claim 1, characterized in that that the intensive forming roller mounted below the sheet metal passage (15) and the lower drive straightening roller (17) are assigned mechanical adjustment devices. 3. straightening machine according to claims 1 and 2, characterized in that that the intensive deforming roller (15) and the lower drive straightening roller (17) are adjustable supported by adjustable wedges (28 or 31). 4. straightening machine according to claims 1 to 3, characterized in that that the infeed roller (13) and the upper drive straightening roller (16) can be adjusted by pressure cylinder (22 or 23), the adjustment path through in the direction of the sheet metal surface mechanical stops (24) can be limited. 130021/0315 PATENT Attorneys FW HEMMERICH · GERD MÜLLER · D. GROSSE ■ F. POLLMEIER November 09, 1979 - ^ - 8.2688-the / kö 5. straightening machine according to claim 1 _;
characterized, that the intensive forming roller above and the infeed roller are adjustably mounted below the sheet metal passage. 5 6. straightening machine according to one or more of claims 1 to 5, characterized, that the stand (12) of the intensive straightening unit is detachably connected to the main frame (5) of the straightening machine. 7. straightening machine according to one or more of claims 1 until 6, characterized, that the upper straightening rollers (6) mounted in the main frame (5) are jointly adjustable and the lower straightening rollers (1) are stored in a stationary manner. 130021/0315