EP1075338B1 - Method and device for machining cylindrical hollow bodies - Google Patents

Abstract

The invention relates to a method for producing or machining a work piece in the form of a cylindrical hollow body, especially a container (an outer wall of a container), a barrel or a cask. According to the inventive method, the work piece is held so that the longitudinal axis thereof is oriented vertically and is then machined, especially formed, edged and provided with beads, a bottom and a lid. The method is characterised in that the work piece is moved at the transfer level and is lowered into a working area of a machining device, especially a shaping machine, for machining. The machining device is arranged underneath the transfer level.

Description

The invention relates to a method for producing or processing barrels, in which the Barrels with a vertical longitudinal axis held and processed in this orientation, in particular deformed, flanged, provided with beads, bottom and lid. The invention further relates to a device according to the preamble of claim 11. The processing takes place on one or preferably at the same time on both front edges Barrels instead. It can be creasing, beading or connecting with a lid or bottom act. For example, a drum-shaped metal shell or container jacket can be used as Packaging for any filling material with loosely inserted bottom and lid tightly closed be, the closing of a cold or hot deformation can be, where above Metal edges are joined together or deformed and folded together.

In generic devices in which the central axes of the barrels during manufacture or machining or shaping are aligned vertically, there is one Transport or transfer line below the processing facilities, with those to be processed Barrels through the transport device or by hand into the work area of the tools placed or suspended above are brought.

From CH 668 732 a device for beading can bodies is known, in which the Processing level coincides with the transfer level. The can bodies are raised and placed on a processing tool from above. From US 5,150,594 is a Tool for processing cans known in which a mandrel and a can holding Holding tool are movable towards or away from each other. From DE 27 38 946 a method and a device for producing metal drums is known, provided for is that the barrels are processed simultaneously at both ends, for what Machining tools arranged in pairs are provided.

The disadvantage of the known procedure is that the heavy tools and drive units must be attached to appropriately stable portals, with which considerable costs are associated.

The object of the invention is a generic method or a corresponding one To make the device easier and cheaper.

This task is procedurally by claim 1 and device-wise Respect solved by claim 11. Advantageous embodiments of the invention are shown in the subclaims are shown.

Fig. 1 und 2 schematisch zur Erläuterung eines zu bearbeitenden Behälters dienen;

Fig. 3 schematisch eine erfindungsgemäße Vorrichtung zeigt;

Fig. 4 schematisch eine bekannte Vorrichtung zeigt, bei der ein Werkstück mit vertikal ausgerichteter Längsachse bearbeitet wird;

Fig. 5 schematisch eine bekannte Vorrichtung zeigt, bei der ein zylindrisches Werkstück mit horizontaler Werkstückachse bearbeitet wird, und

Fig. 6 eine Draufsicht auf ein bekanntes Formwerkzeug zeigt.

The invention is explained in more detail below with reference to a drawing, wherein

Figures 1 and 2 schematically serve to explain a container to be processed;

3 schematically shows a device according to the invention;

Fig. 4 shows schematically a known device in which a workpiece with a vertically aligned longitudinal axis is machined;

5 shows schematically a known device in which a cylindrical workpiece with a horizontal workpiece axis is machined, and

6 shows a top view of a known molding tool.

Fig. 1 shows a rounded and closed with a longitudinal weld or a longitudinal fold Container jacket, which can consist of steel or some other metal sheet, however also made of fiber (multi-layer glued cardboard) or multi-layer metal-plastic panels can be made. Fig. 2 shows a cylindrical made from the container shell of FIG. 1 Container with a longitudinal axis 1, the container consisting of a roller bead 2 and reinforcing beads 3 provided, cylindrical container jacket 4 with bottom 5.

Fig. 4 shows schematically a container manufacturing machine in which the middle or Longitudinal axis 1 of a container is vertical during the shaping or production, wherein the container jacket 4 for shaping from a transfer device 7 or by hand in the Working area of a processing tool hanging on a portal above the transfer device 8 is lifted.

Fig. 5 illustrates another known manufacturing method for containers, wherein a container jacket 4 is processed with the horizontal longitudinal axis 1, tools 8a covering the container jacket 4 from the inside and tools 8b process the container jacket from the outside, so that for example, beads can be introduced.

Fig. 3 explains the procedure according to the invention using a device in which the Workpieces or container sleeves 4 with a vertical longitudinal axis 1 from a transfer device 7 lowered between shaping tools 8a, 8b arranged on a machine bed 10 become.

Depending on the shape to be carried out, the lowering can take place with the full length of the container or graded over parts of it. The drive units are located here and shaping tools close to the ground, while the light transport or Transfer device 7 arranged above the machine. There can be a number of molding machines be arranged in series, with the individual machines for execution of flanging on both sides (upsetting the edge), flanging on one side and bordering on the other side (Roll edge), pressing any number of roll beads in different positions of the Container casing, roll shapes of any number of stiffening beads in different positions, Fold up floors and / or lids or to weld floors can. The ones on the transfer device 7 are moved in the transport direction (arrow 12) Containers or container jackets lowered over the tools of the respective machines (Arrow 14) and after the shaping or processing again on the transfer device lifted. When producing different container or shell shapes, individual ones can Forming machines run over and left out.

The container casing guide elements are (lowered) in the arrangement according to the invention Shaping level) simpler and less complicated and also enable shaping non-round or conical container shells.

6 shows an example of a device-like configuration of the molding tools 8a, 8b from the prior art (EP 0 356 269). The device has a rolling body 32 and a counter-rolling element 31, the two rolling elements being complementary to one another are and the counter-rolling body 31 is fixed in place. The rolling body 32 is one Pivot point 37 is pivotally held. The outer surfaces of the rolling elements are made up of a number annular discs 33a, 35a, 35b constructed.

LIST OF REFERENCE NUMBERS

1

longitudinal axis

2

roll Beading

3

reinforcing bead

4

container jacket

5

ground

7

transfer device

8th

processing tool

8a, 8b

Cutting Tools

10

machine bed

12

transport direction

14

lowering

31

Counter-roller

32

roll body

33a, 35a, 35b

annular discs

37

pivot point

Claims (15)

1. Method for manufacturing or working barrels (4), in which the barrels (4) are held with a vertically aligned longitudinal axis (1), and in this orientation they are worked, in particular shaped, beaded, equipped with headings, base and lid,
   characterised in that
   the barrels (4) are moved in a transfer plane, and for working they are lowered into a machining area, located below the transfer plane, of a machining device arranged below the transfer plane, in particular a forming machine (8a, 8b).
2. Method in accordance with claim 1, characterised in that for machining, the barrels are lowered with a vertical longitudinal axis.
3. Method in accordance with claim 1 or 2, characterised in that the barrels are moved in the transfer plane with a vertical longitudinal axis.
4. Method in accordance with one of the preceding claims, characterised in that the barrels are machined in the machining device (8a, 8b) from the inside and/or from the outside.
5. Method in accordance with one of the preceding claims, characterised in that the barrels in the machining device are machined on the entire axial length or a part thereof.
6. Method in accordance with one of the preceding claims, characterised in that the barrels are lowered and machined in a stepwise manner.
7. Method in accordance with one of the preceding claims, characterised in that after machining, the barrels are raised and moved back into the transfer plane.
8. Method in accordance with one of the preceding claims, characterised in that the barrels pass through several machining steps (lowering, machining, and lifting) at several machining devices, one after one another.
9. Method in accordance with claim 8, characterised in that the barrels are moved past selected machining devices without being machined.
10. Method in accordance with one of the preceding claims, characterised in that the barrels are produced from sheet steel or sheet metal, multi-layer sized paperboard (fibre) or multi-layer metal-plastic boards.
11. Arrangement for producing or machining barrels (4), in particular for carrying out the method in accordance with one of the preceding claims, with a transfer device (7) for moving the barrels (4) in a transfer plane and a machining device (8a, 8b) for manufacturing or machining the barrels in a machining area, in particular a device for shaping, beading and equipping with headings, base and lid, and with means for holding the barrels (4) during machining in an orientation with vertical longitudinal axis (1),
    characterised in that
    the transfer device (7) is designed such that the transfer plane lies above the machining area and the barrels (4) can be lowered into the machining area, with the machining device (8a, 8b) lying below the transfer plane.
12. Arrangement in accordance with claim 11, characterised in that the transfer device (7) moves and/or lowers the barrels (4) with vertical longitudinal axis.
13. Arrangement in accordance with claim 11 or 12, characterised in that the machining device (8a, 8b) works the work piece (4) from the inside and/or the outside, in particular beads it on both sides, or beads it on one side and borders it on the other side.
14. Arrangement in accordance with one of the claims 11 to 13, characterised in that the machining device (8a, 8b) equips the barrels (4) with rolling headings and/or reinforcement headings (2, 3).
15. Arrangement in accordance with one of the claims 11 to 14, characterised in that a number of machining devices are arranged in a row.

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