Device and methods for picking and placing hot 3D glass

• US 8,924,006 B2
• Filed: 11/28/2012
• Issued: 12/30/2014
• Est. Priority Date: 11/30/2011
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Amsden, Jeffrey Michael, Dyer, Gail, Kabel, Scott Michael, Liu, Stephen Kuo-Rui, Wasson, Kevin Lee, Anderson, Michael J
• Primary Examiner(s): CUMBESS, YOLANDA RENEE
• Application Number:
  US13/687,510
• Publication Number:
  US 20130136565A1
• Time in Patent Office: 762 Days
• Field of Search: None
• US Class Current: 700/228
• CPC Class Codes: B25J 15/0052 multiple gripper units or multiple end effectors
• CPC Class Codes: B25J 15/0616 with vacuum
• CPC Class Codes: B25J 17/0208 Compliance devices
• CPC Class Codes: B65G 2249/04 Arrangements of vacuum systems or suction cups
• CPC Class Codes: B65G 2249/045 Details of suction cups suction cups
• CPC Class Codes: B66C 1/0237 Multiple lifting units; More than one suction area
• CPC Class Codes: C03B 23/035 using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
• CPC Class Codes: C03B 23/0357 by suction without blowing, e.g. with vacuum or by venturi effect
• CPC Class Codes: C03B 35/005 Transporting hot solid glass products other than sheets or rods, e.g. lenses, prisms, by suction or floatation
• CPC Class Codes: C03B 35/14 Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
• CPC Class Codes: C03B 35/145 by top-side transfer or supporting devices, e.g. lifting or conveying using suction

Abstract

A system for picking and placing glass articles from a first location to a second location, the second location including a thermal reforming apparatus for transforming the glass articles from 2D glass articles to 3D glass articles includes a robot having an end effector, the end effector including a compliance assembly having at least six degrees of freedom. The compliance assembly is in fluid communication with both an open pneumatic system and a closed pneumatic system, the open pneumatic system providing a partial vacuum to a portion of the compliance assembly for grabbing the glass article, and the closed pneumatic system for activating a centering function for a portion of the compliance assembly.

Claims

1. A system for handling a glass article that is being transported to and from a thermal reforming apparatus, comprising:

at least one robot;

at least one input nest assembly, the input nest assembly including at least one input cross bar receiving frame, at least one input cross bar for inserting into the at least one input cross bar receiving frame and at least one compound angle nest frame for receiving the at least one input cross bar receiving frame, the at least one input cross bar receiving frame and at least one input cross bar comprising a polymer;

an output nest assembly, the output nest assembly including at least one output cross bar receiving frame, at least one output cross bar for inserting into the at least one output cross bar receiving frame and another of the at least one compound angle nest frames for receiving the at least one output cross bar receiving frame, the at least one output cross bar receiving frame and at least one output cross bar comprising a heat resistant material;

a manifold, the manifold having at least one connecting means for connecting the manifold to the robot, at least one adapter plate and at least one chamber;

at least one wedge adapter plate;

at least one compound angle adapter plate, the at least one compound angle adapter plate having a compound angle that corresponds to the at least one compound angle nest frame;

at least one open pneumatic system, the at least one open pneumatic system adapted to apply a fluid pressure that is lower than an ambient pressure through the at least one chamber, creating a partial vacuum in the at least one chamber;

at least one closed pneumatic system, the at least one closed pneumatic system adapted to apply another fluid pressure, the other fluid pressure including a positive fluid pressure greater than the ambient pressure and a negative fluid pressure less than the ambient pressure;

at least one compliance assembly, the compliance assembly including at least one first portion in fluid communication with the at least one closed pneumatic system, and at least one second portion in fluid communication with the at least one open pneumatic system, the at least one first portion comprising a compliance device for accommodating a positional error between a target location and an actual location, at least a portion of the compliance device capable of at least three degrees of freedom, and the at least one second portion comprising a compliance device adapter for interfacing between the compliance device and at least one glass article, at least a portion of the compliance device adapter capable of at least three other degrees of freedom.

2. The system of claim 1, the system cooperating with a thermal reforming apparatus for thermally reforming the glass article from a first shape to a second shape, the thermal reforming apparatus including at least one heating system and at least one mold.

3. The system of claim 2, the at least one mold including a receiving surface and a second-shape profile surface.

4. The system of claim 3, the second-shape profile surface corresponding to the second shape of the at least one glass article, and further including at least one port through the second-shape profile surface, the at least one port being suitable for applying a vacuum to draw the glass against the second-shape profile surface during a thermal reforming process.

5. A method of picking and placing an article, the method comprising the steps of:

positioning an end effector having at least one compliance assembly proximate to at least one article at a first location;

applying at least one fluid pressure to at least one portion of the at least one compliance assembly;

picking the at least one article;

moving the end effector in at least three axes simultaneously toward a second location, the second location having at least one locating reference feature associated with at least one article receiving surface;

placing the at least one article at the second location; and

moving the end effector in a single axis for locating the at least one article to a preheating location proximate to the second location, the preheating location being substantially above the second location.

6. The method of claim 5, further including the step of moving the end effector in a single axis for locating the at least one article at a pre-placement location, whereby the at least one article is offset from the at least one locating reference feature by a first article offset distance in an X-axis and by a second article offset distance in a Y-axis, and offset from the at least one article receiving surface by a third article offset distance in a Z-axis.

7. The method of claim 6, the first article offset distance being equal to the second article offset distance, and the third article offset distance being greater than the first and second article offset distances.

8. The method of claim 6, the step of moving the end effector in at least three axes simultaneously including moving the end effector in the X-axis, the Y-axis and the Z-axis simultaneously, the end effector moving toward the at least one locating reference feature by an amount greater than the first offset distance in the X-axis, an amount greater than the second offset distance in the Y-axis, and an amount less than the third offset distance in the Z-axis.

9. The method of claim 8, the step of moving the end effector in at least three axes simultaneously including moving the end effector in the X-axis and the Y-axis at a first velocity, and moving the end effector in the Z-axis at a second velocity.

10. The method of claim 8, the step of moving the end effector in at least three axes simultaneously including moving the at least one article along the first offset distance and the second offset distance causing the at least one article to make contact with the at least one locating reference feature in the X-axis and the Y-axis.

11. The method of claim 8, the step of moving the end effector in at least three axes simultaneously including moving the at least one article along a portion of the third offset distance leaving the at least one article offset from the at least one receiving surface by a fourth offset distance in the Z-axis that is smaller than the third offset distance.

12. The method of claim 11, the step of placing the at least one article at the second location including releasing the at least one article and allowing the at least one article to freely descend along the fourth offset distance for contacting the at least one receiving surface.

13. The method of claim 5, the first location being at least one input nest and the second location being at least one mold.

14. The method of claim 5, further including the steps of:

repositioning the end effector having the at least one compliance assembly proximate to the at least one article at the second location;

reapplying the at least one fluid pressure to the at least one portion of the at least one compliance assembly;

picking the at least one article from the second location;

moving the end effector toward a third location, the third location including at least one output nest; and

placing the at least one article at the third location.

15. The method of claim 14, the step of reapplying the at least one fluid pressure to the at least one portion of the at least one compliance assembly including reapplying the first positive fluid pressure for locking the at least one compliance assembly.

16. The method of claim 15, the step of repositioning the end effector including moving the end effector toward the at least one article in the Z-axis so the compliance assembly is vertically offset from the at least one article by a fifth offset distance.

17. The method of claim 16, the step of reapplying the at least one fluid pressure to at least one portion of the at least one compliance assembly including reapplying the second negative fluid pressure for picking the at least one article.

18. The method of claim 16, the step of picking the at least one article including the at least one article moving vertically and traversing the fifth offset distance in response to the second negative fluid pressure.

19. The method of claim 5, the at least one article comprising a glass article being at least one member of the group consisting of a glass plate, a glass preform and a 3-dimensionally shaped glass article.

20. The method of claim 5, the step of applying the at least one fluid pressure to the at least one portion of the at least one compliance assembly including applying at least one first fluid pressure to a first portion of the at least one compliance assembly, the first portion having a closed pneumatic system for locking and unlocking the at least one compliance assembly.

21. The method of claim 20, the at least one first fluid pressure including a first positive fluid pressure for locking the at least one compliance assembly and a first negative fluid pressure for unlocking the at least one compliance assembly.

22. A method of picking and placing an article, the method comprising the steps of:

positioning an end effector having at least one compliance assembly proximate to at least one article at a first location;

applying at least one fluid pressure to at least one portion of the at least one compliance assembly and applying at least one second fluid pressure to a second portion of the at least one compliance assembly;

picking the at least one article;

moving the end effector in at least three axes simultaneously toward a second location, the second location having at least one locating reference feature associated with at least one article receiving surface;

placing the at least one article at the second location,

wherein the second portion has an open pneumatic system for picking and placing the at least one article.

23. The method of claim 22, the at least one second fluid pressure being lower than an ambient fluid pressure.

24. The method of claim 23, the open pneumatic system being adapted to apply the at least one second fluid pressure for picking the at least one article, and adapted to withhold the at least one second fluid pressure for placing the at least one article.