SEAMING ROLLER FOR A CLOSING APPARATUS

Abstract

A seaming roll for sealing a container includes a rotation body rotatable on a bolt for sealing the container. The rotation body includes a first basic side and a second basic side different from the first basic side and a bearing. The bolt is arranged on the bearing via the first basic side such that the rotation body can be rotated about the bolt in the circumferential direction of the second basic side when the container is sealed. The seaming roll further includes an exchangeable seaming profile for seaming a container lid with a body of the container and a fastening mechanism. The exchangeable seaming profile is detachably connected to the rotation body via the fastening mechanism.

Claims

1. A seaming roll for sealing a container comprising: a rotation body rotatable on a bolt configured to seal the container, the rotation body comprising a first basic side and a second basic side different from the first basic side and a bearing, the bearing arranged on the bolt via the first basic side such that the rotation body is capable of being rotated about the bolt in a circumferential direction of the second basic side when the container is sealed; an exchangeable seaming profile configured to seam a container lid with a body of the container; and a fastener, the exchangeable seaming profile is detachably connected to the rotation body via the fastener.

2. The seaming roll according to claim 1, wherein the fastener comprises a pin on the rotation body and a notch on the seaming profile, and the seaming profile with the notch is capable of being connected to the pin on the rotation body in a torque-proof and force-locking manner.

3. The seaming roll according to claim 1, wherein the rotation body comprises a cover configured to seal the bearing and the cover is detachably arranged on the second basic side of the rotation body.

4. The seaming roll according to claim 2, wherein the rotation body comprises a cover configured to seal the bearing and the cover is detachably arranged on the second basic side of the rotation body, the cover comprises the pin and the cover is rotatably arranged on the second basic side of the rotation body in such a way that the seaming profile is capable of being can be placed with the notch over the cover onto the rotation body in a first cover position and, after rotation of the cover from the first cover position to a second cover position, is connected to the rotation body in a torque-proof and force-locking manner.

5. The seaming roll according to claim 4, wherein the cover is a polygon, and one corner of the polygon is a pin of the fastener.

6. The seaming roll according to claim 3, wherein the fastener comprises a thread arranged on the rotation body and a counter thread is arranged on the cover, the seaming profile fastened to the rotation body over the cover.

7. The seaming roll according to claim 3, further comprising a safety mechanism arranged between the rotation body and the cover so that the rotation of the cover is delimited.

8. The seaming roll according to claim 1, wherein the fastener comprises a thread arranged on the rotation body and a counter thread arranged on the seaming profile.

9. The seaming roll according to claim 7, wherein the safety mechanism is a safety pin.

10. The seaming roll according to claim 1, wherein the first basic side or the second basic side is round.

11. The seaming roll according to claim 1, wherein the rotation body is a cylindrical rotation body and the seaming profile is a seaming profile ring.

12. The seaming roll according to claim 1, wherein the bearing is a ball bearing or a cylindrical roller bearing.

13. The seaming roll according to claim 1, wherein a seal is arranged between the cover and the rotation body to prevent leakage of lubricants from the bearing.

14. A sealer comprising: the seaming roll according to claim 1.

15. The sealer according to claim 14, further comprising a clamping device.

16. The sealer according to claim 14, wherein the seaming roll is one of at least two seaming rolls.

17. The seaming roll according to claim 5, wherein the cover is a symmetrical polygon.

18. The seaming roll according to claim 5, wherein the cover is an asymmetrical polygon.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0040] The invention will be explained in more detail hereinafter with reference to the drawings.

[0041] FIG. 1 is a schematic representation of the state of the art;

[0042] FIG. 2 is a schematic representation of a seaming roll according to an embodiment of the invention;

[0043] FIG. 3 is a schematic representation of a top view on a second basic side of a seaming roll according to an embodiment of the invention;

[0044] FIG. 4 is a schematic representation of a further embodiment of a seaming roll according to an embodiment of the invention in cross-section;

[0045] FIG. 5 is a schematic representation of the seaming roll according to an embodiment of the invention of FIG. 4 as a partial section;

[0046] FIG. 6 is a schematic representation of a further seaming roll according to an embodiment of the invention in cross-section;

[0047] FIG. 7 is a schematic representation of a can sealer according to an embodiment of the invention.

DETAILED DESCRIPTION

[0048] FIG. 1 shows a schematic representation of the state of the art, which has already been described above. As already mentioned above, the reference signs in FIG. 1 have an inverted comma, since they refer to the known state of the art.

[0049] FIG. 2 shows a schematic representation of a seaming roll according to the invention, which is designated in the following with the reference sign 1.

[0050] According to FIG. 2, the seaming roll 1 comprises a cylindrical rotation body 10 rotatable on a bolt 11 for sealing a can (not shown here), wherein the cylindrical rotation body 10 comprises a first round basic side 111 and a second round basic side 101 different from the first basic side 111 as well as a bearing (not shown here). The bolt is arranged in the bearing via the first basic side 111, so that, in the operating state, the rotation body 10 can rotate about the bolt 11 in the circumferential direction of the second basic side 101 when the container is sealed.

[0051] The seaming roll 1 has an exchangeable seaming profile 12, which is shown separately, i.e. not fixed to the rotation body. According to an embodiments of the invention, the seaming roll 1 comprises a fastening mechanism, wherein the exchangeable seaming profile 12 is detachably connected to the rotation body 10 via the fastening mechanism. The seaming profile 12 can be placed onto the rotation body 10 from the second basic side 101 and is then connected to the rotation body 10 by the fastening mechanism in a torque-proof and force-locking manner.

[0052] In the present embodiment, the seaming profile 12 is designed as seaming profile ring 12. To seam a can lid with a can body of the can, the seaming roll 10 is brought into contact with the can lid flange via the seaming profile 12. Here, the can flange and the can lid flange are pressed together by means of a force acting substantially radially via the seaming roll 10. The pressing is achieved by a continuous rolling of the seaming roll 10 in the circumferential direction along the circumference of a can opening.

[0053] FIG. 3 shows a schematic representation of a top view on the second basic side 101 of the seaming roll according to an embodiment of the invention 1.

[0054] According to FIG. 3, the seaming roll 1 comprises a cover 13 for sealing the bearing, wherein the cover 13 is arranged detachably on the second basic side 101 of the rotation body 10.

[0055] In the embodiment according to FIG. 3, the fastening mechanism (fastener) 15, 16 comprises a pin 15 on the cover 13 of the rotation body 10 and a notch 16 on the seaming profile ring 12.

[0056] The cover 13 is designed as a polygon, i.e. as a polygon-shaped plate 13. Corners 15 of the polygon serve as pins 15 for the fastening mechanism 15, 16, which is used for fixing the seaming profile ring 12 with the notch 16. The notches 16 of the seaming profile ring 12 are corresponding to the pins 15 of the cover 13 and are located on an inner circumference of the sealing profile ring 12.

[0057] When attaching the seaming profile ring 12, the seaming profile ring 12 is placed with the notch over the cover 13 onto the rotation body 10 in a first cover position. The seaming profile ring 12 has a shape corresponding to the polygonal cover 13, so that the seaming profile ring 12 fits over the cover 13 as exactly as possible. After attaching the seaming profile ring 12 to the rotation body 10, the cover 13 is rotated from a first cover position to a second cover position, wherein the corner (or corners) of the polygon is moved as pin 15 away from the notches 16, so that the seaming profile ring 12 is connected to the rotation body 10 in a torque-proof and force-locking manner. The fastening mechanism 15, 16 is designed as a bayonet lock.

[0058] The bayonet lock therefore works in such a way that the cover 13 is designed as a polygon 13 and is attached to the second basic side 101 of the rotation body 10, whereby the bearing is sealed by the cover 13. In principle, by rotating the cover 13, the corners 15 of the cover 13 are rotated from the notches 16 of the seaming profile ring 12 onto the edges (between two notches 16) of the seaming profile ring 12, whereby the seaming profile ring 12 is fixed to the rotation body 10, since a force exerted by the cover 13 acts on the seaming profile ring 12 in the direction of the rotation body 10, by which the seaming profile ring is clamped.

[0059] Particularly preferred, the fastening mechanism 15, 16 can additionally comprise a thread arranged on the rotation body 10 and a corresponding counter-thread arranged on the cover 13, so that the cover 13 can be screwed onto the second basic side 101 of the rotation body 10 and wherein the rotation for fixing the seaming profile ring 12 is achieved via the thread/counter-thread.

[0060] FIG. 4 shows a schematic representation of a further embodiment of the seaming roll 1 according to the invention in cross-section.

[0061] According to FIG. 4, the rotation body 10 comprises the bearing 14 on the inside, whereby the bolt 11 is arranged in the bearing 14 via the first basic side 111.

[0062] In addition, a sealing ring 18 is arranged between the cover 13 and the rotation body 10, which closes and seals the bearing 14 to prevent leakage of lubricants.

[0063] The sealing ring 18 is preferably an elastic element, which is pressed together when closing the bearing 14 with the cover 13.

[0064] FIG. 5 shows a schematic representation of the seaming roll 10 according to the embodiment of the invention of FIG. 4 as a partial section.

[0065] FIG. 6 shows a schematic representation of a further embodiment of the seaming roll 1 according to the invention in cross-section.

[0066] According to FIG. 6, the seaming roll 1 comprises the sealing ring 18 between the cover 13 and the rotation body 10. The seaming roll 1 additionally comprises a safety mechanism 17, wherein the safety mechanism 17 is also arranged between the rotation body 10 and the cover 13, so that the rotation of the cover 13 is delimited, in particular delimited to a rotation from the first cover position to the second cover position.

[0067] The safety mechanism 17 is designed as a safety pin 17, which is arranged in a recess 19 of the cover 13. The recess 19 has a recess expansion in the direction of rotation of the cover 13 or in the circumferential direction of the second basic side, so that the rotation of the cover 13 is delimited to the recess expansion. In this way, the cover 13 is prevented from becoming completely detached from the rotation body 10 and thus from the beating (not shown here) in order to prevent leakage of lubricants and thus contamination of the cans. To remove the cover 13 completely, the locking pin 17 consequently has to be removed first. For this purpose, suitable openings for inserting the safety pin 17 can be provided in the rotation body 10 and also in the seaming profile 12.

[0068] FIG. 7 shows a schematic representation of a can sealer 1000 according to an embodiment of the invention, in which a can 200 to be sealed with a can lid 202 and a can body 201 is arranged.

[0069] According to FIG. 7, the can sealer 1000 according to an embodiment of the invention comprises a clamping device 20, 22 comprising a can support 22 and a seaming head 20, and the seaming roll 10 with the exchangeable seaming roll profile 12 rotatably mounted around the bolt 11. The can lid 202 is arranged in a centered way above the opening of the can 200. The can body 201 has a circumferential can flange in the area of the can opening and the can lid 202 has a circumferential can lid flange. In the operating state of the can sealer 1000, the can 200 is rotated around its axis of symmetry X by the clamping device 20, 22.

[0070] During the sealing process, the seaming roll 1 is brought into contact with the can lid flange via the seaming roll profile 12. Here, the can flange and the can lid flange are pressed together via the seaming roll 1 by a force acting substantially radially. The pressing is achieved by a continuous rolling of the seaming roll 1 in the circumferential direction along the circumference of the can opening.

[0071] The seaming roll 1 according to an embodiment of the invention for sealing the can 200 comprises the bolt 11 and the rotation body 10, which is attached to the can 200 with the seaming profile 12. The rotation body 10 is cylindrical and the cover 13, which is arranged on the second basic side of the rotation body 10, fixes the exchangeable seaming profile 12 to the rotation body 10 with the fastening mechanism 15.