Device and piston for segregating articles

• US 20100070096A1
• Filed: 09/03/2009
• Published: 03/18/2010
• Est. Priority Date: 09/03/2008
• Status: Active Grant

• Current Assignee: Krones AG (Krones)
• Original Assignee: Krones AG (Krones)
• Inventors: Rauscher, Guenter, Duenzinger, Bernhard
• Granted Patent: US 8,438,966 B2
• Time in Patent Office: Days
• US Class Current: 700/282
• CPC Class Codes: F15B 15/1428 Cylinders F15B15/1438 takes precedence
• CPC Class Codes: F15B 15/1452 Piston sealings
• CPC Class Codes: F16J 1/003 with integral sealing lips
• CPC Class Codes: F16J 1/008 with sealing lips

Abstract

A device and a piston for segregating articles is being disclosed. The device encompasses a segregating element comprising at least one cylinder with a cylinder housing and a piston installed in the cylinder that has at least one valve. A medium can be fed into and discharged from the cylinder via at least one line. The at least one valve interacts with the at least one line so as to create a hard sealing, and a housing sealing element interacts with a piston sealing element so as to create a hard sealing. The piston can used in a device for segregating liquid containers.

Claims

1. A device for segregating articles, whereby a plurality of articles on a conveyor belt passes a detection unit in a conveying direction of the conveyor belt, whereby the conveyor belt is associated with a segregating element, the device comprising:

at least one cylinder with a cylinder housing and a piston installed in the cylinder that has at least one valve, so that, via a control unit, a medium can be fed into and discharged from the cylinder via at least one line, whereby the at least one valve and the at least one line interact with each other so as to create a hard sealing, as a result of which the piston can be moved into and out of the cylinder in a piston direction along at least one sliding surface of the cylinder housing, and so that a hard-sealing housing sealing element is arranged on the at least one sliding surface of the cylinder housing, and at least one piston sealing element is arranged on the piston, the at least one piston sealing element being likewise configured so as to create a hard sealing.

2. The device according to claim 1 wherein the at least one line comprises at least one

feed line and discharge line for the medium in each of which a valve is arranged, whereby the line is associated with at least one line sealing element and the valve is associated with at least one valve sealing element which are both configured so as to create a hard sealing.

3. The device according to claim 1 wherein least one of the housing sealing element and the piston sealing element is made of a metallic material.

4. The device according to claim 3 wherein the metallic material is steel.

5. The device according to claim 1 wherein at least one of the housing sealing element and the piston sealing element is made of Teflon-coated aluminum.

6. The device according to claim 1 wherein at least one of the housing sealing element and the piston sealing element is made of a plastic.

7. The device according to claim 1 wherein at least one of the housing sealing element and the piston sealing element is made of ceramic.

8. The device according to claim 1 wherein the piston sealing element and the housing sealing element are made of the same material.

9. The device according to claim 2 wherein the valve sealing element and the line sealing element are made of the same material.

10. The device according to claim 1 wherein the piston sealing element is integral with the piston.

11. A piston for segregating articles, whereby the piston can be moved in a cylinder with a cylinder housing in a piston direction along a sliding surface of the cylinder housing, whereby a hard-sealing housing sealing element is arranged on the sliding surface of the cylinder housing, comprising:

a piston body and a piston sealing element is arranged on the piston body so as to create a hard sealing.

12. The device according to claim 11 wherein least one of the housing sealing element and the piston sealing element is made of a metallic material.

13. The device according to claim 12 wherein the metallic material is steel.

14. The device according to claim 11 wherein at least one of the housing sealing element and the piston sealing element is made of Teflon-coated aluminum.

15. The device according to claim 11 wherein at least one of the housing sealing element and the piston sealing element is made of a plastic.

16. The device according to claim 11 wherein at least one of the housing sealing element and the piston sealing element is made of ceramic.

17. The device according to claim 11 wherein the piston sealing element and the housing sealing element are made of the same material.

18. A method comprising employing a piston according to claim 12 in a device for segregating liquid containers.