Fastener stacking and removal system

• US 7,040,506 B2
• Filed: 06/15/2005
• Issued: 05/09/2006
• Est. Priority Date: 07/11/2003
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Bloch, Daniel D., Miller, William P., McGahey, Jason D.
• Primary Examiner(s): NOLAND, KENNETH W
• Application Number:
  US11/153,102
• Publication Number:
  US 20050242106A1
• Time in Patent Office: 328 Days
• Field of Search: 221/278, 221/165, 221/298, 221/95, 227/112, 227/111, 227/110, 227/107, 227/109, 227/119, 406/191, 406/86, 406/192
• US Class Current: 221/278
• CPC Class Codes: B21J 15/32 Devices for inserting or holding rivets in position with or without feeding arrangements
• CPC Class Codes: B23P 19/002 orientating the articles
• CPC Class Codes: B23P 19/003 Escapement mechanisms used therewith

Abstract

A system is provided for delivering fasteners to a work station. The system includes at least one fastener storage device than has at least one storage tube. The system additionally includes at least one fastener spacer that is adapted to properly orient at least one fastener stored in the storage tube. The system further includes at least one unloading mechanism that includes at least one extractor catcher. The unloading mechanism is adapted to remove the spacer and the fastener from the storage tube in a single operation.

Claims

1. A method for delivering fasteners to a work station, said method comprising:

loading at least one storage tube of at least one storage device with at least one fastener and at least one spacer adapted to properly orient the fastener within the storage tube;

substantially simultaneously retrieving the fastener and the fastener spacer from the storage tube utilizing an unloading mechanism;

substantially simultaneously retaining the fastener within an extractor catcher of the unloading mechanism and transporting the spacer to a spacer storage receptacle; and

depositing the fastener in a delivery conduit adapted to transport the fastener to a work station.

2. The method of claim 1, wherein retrieving a fastener and spacer from the storage tube comprises utilizing a vacuum force that removes the fastener and spacer from the storage tube.

3. The method of claim 1, wherein utilizing a vacuum force comprises creating the vacuum force utilizing at least one vacuum generator included in the unloading mechanism.

4. The method of claim 2, wherein retaining the fastener within the extractor catcher and transporting the spacer to the storage receptacle comprises:

retaining the fastener within the extractor catcher utilizing the vacuum force;

substantially simultaneously transporting the spacer through the extractor catcher and the vacuum generator utilizing the vacuum force; and

propelling the spacer through a spacer transport tube to the storage receptacle utilizing a vacuum exhaust created by the vacuum generator.

5. The method of claim 4, wherein retaining the fastener within the extractor catcher and transporting the spacer to the storage receptacle further comprises:

retaining the fastener within a chamfered opening in a first end of the extractor catcher, whereby the chamfered opening leads into a channel extending through the extractor catcher; and

drawing air into the extractor catcher after the fastener has been stopped by the chamfered opening via an intake port that is in communication with the channel, thereby allowing air to flow through the extractor catcher so that the spacer is substantially simultaneously transported through the extractor catcher.

6. The method of claim 4, wherein retaining the fastener within the extractor catcher and transporting the spacer to the storage receptacle further comprises:

retaining the fastener within a chamfered portion of an opening in a first end of the extractor catcher, whereby the chamfered portion of the opening leads into a channel extending through the extractor catcher; and

drawing air into the extractor catcher after the fastener has been stopped by the chamfered portion via an intake port that is in communication with the channel, thereby allowing air to flow through the extractor catcher so that the spacer is substantially simultaneously transported through the extractor catcher.

7. The method of claim 1, wherein loading at least one storage tube comprises:

inserting the fastener into the storage tube;

subsequently inserting the spacer into the storage tube whereby a recess in the spacer having a chamfered upper portion self-locates on a mandrel of the fastener such that the mandrel is positioned loosely within the recess without manipulation of the fastener and the spacer.

8. A method for delivering fasteners to a work station, said method comprising:

substantially simultaneously retrieving a fastener and a fastener spacer from the storage tube utilizing an unloading mechanism;

substantially simultaneously retaining the fastener within an extractor catcher of the unloading mechanism and transporting the spacer to a spacer storage receptacle; and

depositing the fastener in a delivery conduit adapted to transport the fastener to a work station.

9. The method of claim 8, wherein retrieving a fastener and spacer from the storage tube comprises utilizing a vacuum force that removes the fastener and spacer from the storage tube.

10. The method of claim 8, wherein utilizing a vacuum force comprises creating the vacuum force utilizing at least one vacuum generator included in the unloading mechanism.

11. The method of claim 9, wherein retaining the fastener within the extractor catcher and transporting the spacer to the storage receptacle comprises:

retaining the fastener within the extractor catcher utilizing the vacuum force;

substantially simultaneously transporting the spacer through the extractor catcher and the vacuum generator utilizing the vacuum force; and

propelling the spacer through a spacer transport tube to the storage receptacle utilizing a vacuum exhaust created by the vacuum generator.

12. The method of claim 11, wherein retaining the fastener within the extractor catcher and transporting the spacer to the storage receptacle further comprises:

retaining the fastener within a chamfered opening in a first end of the extractor catcher, whereby the chamfered opening leads into a channel extending through the extractor catcher; and

drawing air into the extractor catcher after the fastener has been stopped by the chamfered opening via an intake port that is in communication with the channel, thereby allowing air to flow through the extractor catcher so that the spacer is substantially simultaneously transported through the extractor catcher.

13. The method of claim 11, wherein retaining the fastener within the extractor catcher and transporting the spacer to the storage receptacle further comprises:

retaining the fastener within a chamfered portion of an opening in a first end of the extractor catcher, whereby the chamfered portion of the opening leads into a channel extending through the extractor catcher; and

drawing air into the extractor catcher after the fastener has been stopped by the chamfered portion via an intake port that is in communication with the channel, thereby allowing air to flow through the extractor catcher so that the spacer is substantially simultaneously transported through the extractor catcher.

14. A method for delivering fasteners to a work station, said method comprising:

loading at least one storage tube of at least one storage device with at least one fastener and at least one spacer adapted to properly orient the fastener within the storage tube;

substantially simultaneously retrieving the fastener and the fastener spacer from the storage tube using an unloading mechanism that provides a vacuum force from a vacuum generator to remove the fastener and spacer from the storage tube;

retaining the fastener within the extractor catcher of the unloading mechanism utilizing the vacuum force;

transporting the spacer through the extractor catcher and the vacuum generator utilizing the vacuum force;

propelling the spacer through a spacer transport tube to a storage receptacle utilizing a vacuum exhaust created by the vacuum generator; and

depositing the fastener in a delivery conduit adapted to transport the fastener to a work station.

15. The method of claim 14, wherein retaining the fastener within the extractor catcher and transporting the spacer to the storage receptacle further comprises:

retaining the fastener within a chamfered opening in a first end of the extractor catcher, whereby the chamfered opening leads into a channel extending through the extractor catcher; and

drawing air into the extractor catcher after the fastener has been stopped by the chamfered opening via an intake port that is in communication with the channel, thereby allowing air to flow through the extractor catcher so that the spacer is substantially simultaneously transported through the extractor catcher.

16. The method of claim 14, wherein retaining the fastener within the extractor catcher and transporting the spacer to the storage receptacle further comprises:

retaining the fastener within a chamfered portion of an opening in a first end of the extractor catcher, whereby the chamfered portion of the opening leads into a channel extending through the extractor catcher; and

drawing air into the extractor catcher after the fastener has been stopped by the chamfered portion via an intake port that is in communication with the channel, thereby allowing air to flow through the extractor catcher so that the spacer is substantially simultaneously transported through the extractor catcher.

17. The method of claim 14, wherein loading at least one storage tube comprises:

inserting the fastener into the storage tube;

subsequently inserting the spacer into the storage tube whereby a recess in the spacer having a chamfered upper portion self-locates on a mandrel of the fastener such that the mandrel is positioned loosely within the recess without manipulation of the fastener and the spacer.