Apparatuses and methods for separating, feeding and mounting O-rings

Patent metadata

Field	Value
Publication number	US-11440170-B2
Application number	US-202016991541-A
Country	US
Kind code	B2
Filing date	Aug 12, 2020
Priority date	Feb 13, 2018
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

The present application discloses an apparatus for mounting an O-ring to a work piece, which includes a body including a plurality of connecting holes for connecting a pressure source to the body; an annular groove formed on the body and adapted to receive the O-ring; and a plurality of air channels formed in the body, the plurality of air channels being in fluid communication with the annular groove and the plurality of connecting holes to provide negative pressure with the pressure source in the annular groove to suck the O-ring in the annular groove, the annular groove is coaxial with a groove formed on a surface of the work piece during the mounting so that the O-ring is dropped into the groove when the pressure source is disconnected from the body or provides positive pressure to the plurality of air channels.

First claim

What is claimed is:

1. An apparatus for mounting an 0 -ring to a work piece, comprising:
a body comprising a plurality of connecting holes for connecting a pressure source to the body;
an annular groove formed on the body and adapted to receive the O-ring; and
a plurality of air channels formed in the body, the plurality of air channels being in fluid communication with the annular groove and the plurality of connecting holes to provide negative pressure with the pressure source in the annular groove to suck the O-ring in the annular groove,
wherein the annular groove is coaxial with a groove formed on a surface of the work piece during the mounting so that the 0 -ring is dropped into the groove when the pressure source is disconnected from the body or provides positive pressure to the plurality of air channels.

2. The apparatus of claim 1 , wherein a radial cross-section of the annular groove is of an arc shape, a radius of the arc being substantially the same as a wire diameter of the O-ring.

3. The apparatus of claim 2 , wherein at least one edge of the annular groove has chamfers.

4. The apparatus of claim 1 , wherein the body comprises a first portion, a second portion and at least one sealing component arranged between the first portion and the second portion, and
wherein the annular groove and the plurality of air channels are formed in the second portion, and the plurality of connecting holes are formed in the first portion.

5. The apparatus of claim 4 , further comprising a vacuum chamber formed on the first portion for connecting the plurality of air channels and the plurality of connecting holes.

6. The apparatus of claim 5 , wherein the vacuum chamber is ring-shaped and coaxial with the annular groove.

7. The apparatus of claim 6 , wherein the plurality of air channels are arranged evenly and circumferentially between the annular groove and the vacuum chamber.

8. The apparatus of claim 1 , further comprising at least one mounting portion arranged on the body and adapted to couple the body to a robot.

9. The apparatus of claim 1 , further comprising a positing positioning sensor mounted on the body and adapted to detect a position of the 0 -ring or the groove.

10. A method for mounting an 0 -ring to a work piece, comprising:
providing negative pressure in an annular groove formed on a body with a pressure source to suck the O-ring in the annular groove, wherein a plurality of connecting holes are formed on the body for connecting the pressure source to the body, and wherein a plurality of air channels are in fluid communication with the annular groove and the plurality of connecting holes;
moving the body over the work piece, wherein the annular groove is coaxial with a groove formed on a surface of the work piece; and
dropping the O-ring into the groove by disconnecting the pressure source from the body or providing positive pressure to the plurality of air channels using the pressure source.

11. The method of claim 10 , further comprising:
moving the body, before moving the body over the work piece, back and forth in multiple directions while moving the body towards and away from the O-ring to ensure the O-ring to be sucked in the annular groove.

12. The method of claim 10 , further comprising:
moving the body, after dropping the O-ring into the groove, back and forth in multiple directions while moving the body towards and away from the O-ring to ensure the O-ring to be in the groove.

13. A system, comprising:
a robot;
a pressure source; and
an apparatus operatively coupled with said robot for mounting an O-ring to a work piece, the apparatus comprising:
a body comprising a plurality of connecting holes for connecting the pressure source to the body;
an annular groove formed on the body and adapted to receive the O-ring; and
a plurality of air channels formed in the body, the plurality of air channels being in fluid communication with the annular groove and the plurality of connecting holes to provide negative pressure with the pressure source in the annular groove to suck the 0 -ring in the annular groove,
wherein the annular groove is coaxial with a groove formed on a surface of the work piece during the mounting so that the O-ring is dropped into the groove when the pressure source is disconnected from the body or provides positive pressure to the plurality of air channels.

14. The system of claim 13 , wherein a radial cross-section of the annular groove is an arc shape, a radius of the arc being substantially same as a wire diameter of the O-ring.

15. The system of claim 14 , wherein at least one edge of the annular groove has chamfers.

16. The system of claim 13 , wherein the body comprises a first portion, a second portion and at least one sealing component arranged between the first portion and the second portion, and wherein the annular groove and the plurality of air channels are formed in the second portion, and the plurality of connecting holes are formed in the first portion.

17. The system of claim 16 , further comprising a vacuum chamber formed on the first portion for connecting the plurality of air channels and the plurality of connecting holes.

18. The system of claim 17 , wherein the vacuum chamber is ring-shaped and coaxial with the annular groove.

19. The system of claim 18 , wherein the plurality of air channels are arranged evenly and circumferentially between the annular groove and the vacuum chamber.

20. The system of claim 13 further comprising at least one mounting portion arranged on the body and adapted to couple the body to a robot.

Assignees

• Abb Schweiz Ag

Inventors

• Li Cheng
• Zhao Feifei
• Mao Yichao

Classifications

• B25B27/0028 Primary

  Tools for removing or installing seals (B25B27/0092 takes precedence) · CPC title

• Y10T29/53657

  to apply or remove a resilient article [e.g., tube, sleeve, etc.] · CPC title

• B25J13/086

  Proximity sensors · CPC title

• B25J15/0616

  with vacuum · CPC title

• B23P19/084

  for placing resilient or flexible rings, e.g. O-rings, circlips · CPC title