Device for producing packaging comprising an independent mandrel wheel drive

Abstract

Shown and described is a device for producing packaging, in particular for processing package sleeves, comprising: a mandrel wheel with a mandrel wheel shaft with a central axis, a plurality of mandrels fastened to the mandrel wheel shaft, wherein the mandrels form at least one mandrel group, whose mandrels are arranged in a plane perpendicular to the central axis of the mandrel wheel shaft, at least one first processing station which is arranged on the mandrel wheel and comprises a drive, and a mandrel wheel drive to drive the mandrel wheel shaft. In order to facilitate a particular flexible mode of driving the device, it is proposed that the mandrel wheel drive is mechanically uncouple from the drive the at least one processing station.

Claims

1. A device for producing packaging comprising: a mandrel wheel with a mandrel wheel shaft with a central axis, a plurality of mandrels fastened to the mandrel wheel shaft, the plurality of mandrels forming at least one mandrel group, whose mandrels are arranged in a plane perpendicular to the central axis of the mandrel wheel shaft, a first processing station which is arranged on the mandrel wheel and comprising a drive, a second processing station which is arranged on the mandrel wheel and comprising a drive independent from the drive of the first processing station, wherein one of the processing stations is a press and one of the processing stations is a folding device, and a mandrel wheel drive to drive the mandrel wheel shaft, wherein the mandrel wheel drive is mechanically uncoupled and independent from the two independent drives of the first and second processing stations, wherein: i) a drive unit is used as the drive of at least one of the first and second processing stations, the drive unit comprising an electric motor, a transmission, and a controller or ii) a direct drive is used as the drive of at least one of the first and second processing stations, the direct drive comprising an electric motor having no separate transmission and a controller, wherein in the controller, at least one time course of a moment of inertia is stored, and wherein a position regulation of the electric motor takes place by torque pre-control of the time course of the moment of inertia stored in the controller.

2. The device according to claim 1, wherein a third processing station is arranged on the mandrel wheel and comprises a drive.

3. The device according claim 2, wherein the mandrel wheel drive is mechanically uncoupled and independent from the three independent drives of the first, second, and third processing stations.

4. The device according to claim 1, wherein the mandrel wheel drive is mechanically uncoupled from the drives of all processing stations.

5. The device according to claim 1, further comprising a third processing station configured to be a push-on device with respect to one of the mandrels.

6. The device according to claim 1, further comprising a third processing station configured to be a pull-off device with respect to one of the mandrels.

7. The device according to claim 1, wherein the mandrel wheel comprises at least two mandrel groups.

8. The device according to claim 7, wherein the mandrel wheel comprises at least four mandrels.

9. The device according to claim 1, wherein each mandrel group comprises at least four mandrels.

10. The device according to claim 9, wherein each mandrel group comprises at least six mandrels.

11. The device according to claim 1, wherein a drive unit is used as the mandrel wheel drive which comprises an electric motor and a transmission.

12. The device according to claim 1, wherein a direct drive is used as the mandrel wheel drive.

13. The device according to claim 1, wherein the device is for processing packaging sleeves.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is explained below on the basis of a drawing representing merely one preferred exemplary embodiment.

(2) FIG. 1: a device known from the prior art for producing packaging comprising a mandrel wheel in schematic representation and

(3) FIG. 2 a device according to the invention for producing packaging comprising a mandrel wheel in schematic representation.

DESCRIPTION OF THE INVENTION

(4) FIG. 1 shows a device 1 known from the prior art for producing packaging comprising a mandrel wheel 2 in schematic representation. Firstly, flat blanks 3 are introduced into a magazine 4 and then unfolded in a folding device 5 into package sleeves 6. The device 1 comprises a mandrel wheel 2 with a mandrel wheel shaft 7 with a central axis 8. Six mandrels 9 are fastened to the mandrel wheel shaft 7. The six mandrels 9 shown in FIG. 1 form a mandrel group, whose mandrels 9 are arranged in a plane perpendicular to the central axis 8 of the mandrel wheel shaft 7. The mandrel wheel 2 can be moved further in a clocked manner counter clockwise (represented by an arrow) and in doing so held in six different mandrel wheel positions I-VI. In each case one processing station B1-B5 is arranged in the mandrel wheel positions I-V before the end of the mandrels 9, at which stations the package sleeves 6 are supposed to be processed in their end regions 10, for example in their base regions.

(5) The device 1 shown in FIG. 1 also has a mandrel wheel drive 11 to drive the mandrel wheel shaft 7. The mandrel wheel drive 11 is mechanically coupled to the mandrel wheel shaft 7, for example via a timing belt 12. The mandrel wheel drive 11 drives not only the mandrel wheel shaft 7, but it also drives the processing stations B1-B5. To this end, the mandrel wheel drive 11 is mechanically coupled to each of the processing stations B1-B5, for example via timing belts 12 (represented only schematically in FIG. 1) and/or other suitable coupling elements such as shafts, gearwheels and the like.

(6) A device 1′ according to the invention is shown in FIG. 2 for producing packaging comprising a mandrel wheel 2 in schematic representation. Such regions of the device 1′, which were already described in relation to FIG. 1, are provided with corresponding reference numerals in FIG. 2. An essential difference with the device 1 known from the prior art (FIG. 1) is that the device 1′ according to the invention has a different drive design. In particular, in the case of the device shown in FIG. 2, it is provided that each processing station B1-B1 has its own drive A1 to A5 and that the mandrel wheel drive 11 is mechanically uncoupled from the drives A1-A5 of all processing stations B1-B5.

(7) On the basis of the device 1 shown in FIG. 2, the production of packaging (open on one side) is supposed to be represented by way of example. Firstly, the already unfolded package sleeves 6 are taken from the first processing station, which is a push-on device B1, and pushed onto the mandrel 9 which is located in the mandrel wheel position I. The push-on device B1 is to this end driven by its own drive A1 which is mechanically uncoupled from the mandrel wheel drive 11 (and the other drives A2, A3, A4, A5).

(8) The mandrel wheel 2 is then rotated from the mandrel wheel position I into the mandrel wheel position II. The mandrel wheel shaft 7 of the mandrel wheel 2 is to this end driven by the mandrel wheel drive 11 which is mechanically uncoupled from the drives A1-A5 of all processing stations B1-B5.

(9) In the second mandrel wheel position II, the package sleeves 6 are heated in their end regions 10 by the second processing station, which is a heating unit B2. The heating unit B2 is to this end moved by its own drive A2 which is mechanically uncoupled from the mandrel wheel drive 11 (and the other drives A1, A3, A4, A5).

(10) The mandrel wheel 2 is subsequently rotated from the mandrel wheel position II into the mandrel wheel position III. The mandrel wheel shaft 7 of the mandrel wheel 2 is to this end in turn driven by the mandrel wheel drive 11 which is mechanically uncoupled from the drives A1-A5 of all processing stations B1-B5.

(11) In the third mandrel wheel position III, the folding of the end regions 10 of the package sleeves 6 takes place through the third processing station which is a folding unit B3. In particular, it can be a longitudinal folder (folding movement in the circumferential direction of the mandrel wheel 2) or a lateral folder (folding movement in the direction of the central axis 8 of the mandrel wheel 2). The folding unit B3 is to this end moved by its own drive A3 which is mechanically uncoupled from the mandrel wheel drive 11 (and the other drives A1, A2, A4, A5).

(12) The mandrel wheel 2 is then rotated from the mandrel wheel position III into the mandrel wheel position IV. The mandrel wheel shaft 7 of the mandrel wheel 2 is to this end in turn driven by the mandrel wheel drive 11 which is mechanically uncoupled from the drives A1-A5 of all processing stations B1-B5.

(13) In the fourth mandrel wheel position IV, the compression of the end regions 10 of the package sleeves 6 takes place through the fourth processing station which is a press B4 which is also designated as “base press”. The press B4 is to this end moved by its own drive A4 which is mechanically uncoupled from the mandrel wheel drive 11 (and the other drives A1, A2, A3, A5).

(14) The mandrel wheel 2 is then rotated from the mandrel wheel position IV into the mandrel wheel position V. The mandrel wheel shaft 7 of the mandrel wheel 2 is to this end in turn driven by the mandrel wheel drive 11 which is mechanically uncoupled from the drives A1-A5 of all processing stations B1-B5.

(15) In the fifth mandrel wheel position V, the package sleeves 6 are pulled off the mandrel 9 by the fifth processing station which is a pull-off device B5 in order to be able to be supplied to further processing steps no longer taking place on the device 1′. The pull-off device B5 is to this end moved by its own drive A5 which is mechanically uncoupled from the mandrel wheel drive 11 (and the other drives A1, A2, A3, A4).

(16) After the package sleeves 6 have passed through the processing stations B1 to B6, the package sleeves 6 are sealed on one side (e.g. in the region of the base) and can be filled in subsequent work steps and sealed from the other side (e.g. in the region of the gable).

LIST OF REFERENCE NUMERALS

(17) 1, 1′: device 2: mandrel wheel 3: blank 4: magazine 5: unfolding device 6: package sleeve 7: mandrel wheel shaft 8: central axis 9: mandrel 10: end region (of the package sleeve 6) 11: mandrel wheel drive 12: timing belt A1-A5: drive (of a processing station B1-B1) B1-B5: processing station B1: push-on device B2: heating unit B3: folding unit B4: press B5: pull-off device I-VI: mandrel wheel position