Printed circuit board support

• US 6,962,248 B2
• Filed: 02/27/2003
• Issued: 11/08/2005
• Est. Priority Date: 11/01/2000
• Status: Expired due to Fees

• Current Assignee: Micron Technology, Inc.
• Original Assignee: Micron Technology, Inc.
• Inventors: Gordon, Brian F., Godfrey, John S., Teitenberg, Tony M.
• Primary Examiner(s): RIDLEY, RICHARD W L
• Application Number:
  US10/375,807
• Publication Number:
  US 20030136636A1
• Time in Patent Office: 985 Days
• Field of Search: 198/345.2, 298/40, 101/129, 101/485, 101/114, 101/123, 101/124, 101/126, 101/44, 101/43
• US Class Current: 198/345.2
• CPC Class Codes: H05K 13/0069 Holders for printed circuit boards
• CPC Class Codes: Y10T 29/49144 by metal fusion
• CPC Class Codes: Y10T 29/53174 Means to fasten electrical component to wiring board, base, or substrate
• CPC Class Codes: Y10T 29/53196 Means to apply magnetic force directly to position or hold work part
• CPC Class Codes: Y10T 29/53265 with work-holder for assembly

Abstract

A printed circuit board conveying and processing system. In accordance with the present invention, a printed circuit board conveying system is provided comprising a pair of conveyor rails and a printed circuit board support. The conveyor rails are positioned to engage opposite lateral edge portions of a printed circuit board along a conveyor path. The printed circuit board support is positioned to support a major portion of the printed circuit board between the lateral edge portions. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR §1.72(b).

Claims

1. A printed circuit board conveying system comprising:

a pair of conveyor rails positioned to engage opposite lateral edge portions of a printed circuit board and configured to convey said printed circuit board along a conveyor path; and

a printed circuit board support positioned to support a major portion of said printed circuit board between said lateral edge portions, said printed circuit board support comprising

a support base defining a support surface;

a spacer engaging said support surface; and

a spacer securement including a projection and a recess, wherein

said projection is mounted to or formed integrally with one of said support base and said spacer,

said recess is formed in the other of said support base and said spacer,

said projection extends into said recess,

said projection and said recess are configured such that said extension of said projection into said recess limits movement of said spacer relative to a plane parallel to said support surface, and

a thickness dimension of said spacer is selected to enable engagement of said spacer with said printed circuit board.

2. A printed circuit board conveying system as claimed in claim 1 wherein said projection is mounted to or formed integrally with said spacer and said recess is formed in said support base.

3. A printed circuit board conveying system as claimed in claim 1 wherein said printed circuit board support comprises at least two spacer securements.

4. A printed circuit board conveying system as claimed in claim 1 wherein said projection comprises a substantially cylindrical pin and said recess comprises a cylindrical recess having a diameter slightly larger than said pin.

5. A printed circuit board conveying system as claimed in claim 1 wherein said spacer defines an upper spacer surface spaced from and substantially parallel to said support surface.

6. A printed circuit board conveying system as claimed in claim 5 wherein said upper spacer surface is sized and configured to support and engage a major portion of said printed circuit board.

7. A printed circuit board conveying system comprising:

a pair of conveyor rails positioned to engage opposite lateral edge portions of a printed circuit board and configured to convey said printed circuit board along a conveyor path;

a printed circuit board support positioned to support a major portion of said printed circuit board between said lateral edge portions, said printed circuit board support comprising a support base wherein

said support base defines a support surface,

said support base defines a leading edge, a trailing edge, and a pair of lateral edges,

said support base defines a cut-out formed therein, and

said cut-out is positioned between said pair of lateral edges and extends from said leading edge in the direction of said trailing edge to a position between said leading edge and said trailing edge, wherein said cut-out transects the thickness of said support base; and

a stop mechanism positioned to engage said printed circuit board support at a point within said cut-out.

8. A printed circuit board conveying system as claimed in claim 7 wherein said leading edge, said trailing edge, and said pair of lateral edges are defined in a substantially planar surface of said support base.

9. A printed circuit board conveying system as claimed in claim 7 wherein said cut-out is formed in said support surface of said support base.

10. A printed circuit board conveying system as claimed in claim 7 wherein said printed circuit board support further comprises:

a spacer engaging said support surface and including an additional cut out formed therein, wherein said additional cut-out transects the thickness of said spacer; and

a spacer securement arranged to secure said spacer to said support surface with said additional cut-out aligned with said cut-out formed in said support base.

11. A printed circuit board conveying system as claimed in claim 10 wherein said additional cut-out and said cut-out in said support base are coextensive.

12. A printed circuit board conveying system as claimed in claim 10 wherein said additional cut-out is formed in an upper spacer surface of said spacer.

13. A printed circuit board conveying system as claimed in claim 7 wherein said stop mechanism includes an actuator and a pin and is configured to selectively extend and retract said pin to and from a position engaging said printed circuit board support at said point within said cut-out.

14. A printed circuit board processing system including a printed circuit board conveying system coupling a printed circuit board loader to a stencil printer, a pick and place machine, and a reflow oven, wherein said printed circuit board conveying system comprises:

a pair of conveyor rails positioned to engage opposite lateral edge portions of a printed circuit board and configured to convey said printed circuit board along a conveyor path; and

a printed circuit board support positioned to support a major portion of said printed circuit board between said lateral edge portions within an operating envelope of said pick and place machine, said printed circuit board support comprising

a support base defining a support surface;

a spacer engaging said support surface; and

a spacer securement including a projection and a recess, wherein

said projection is mounted to or formed integrally with one of said support base and said spacer,

said recess is formed in the other of said support base and said spacer,

said projection extends into said recess,

said projection and said recess are configured such that said extension of said projection into said recess limits movement of said spacer relative to a plane parallel to said support surface, and

a thickness dimension of said spacer is selected to enable engagement of said spacer with said printed circuit board.

15. A printed circuit board processing system including a printed circuit board conveying system coupling a printed circuit board loader to a stencil printer, a pick and place machine, and a reflow oven, wherein said printed circuit board conveying system comprises:

a pair of conveyor rails positioned to engage opposite lateral edge portions of a printed circuit board and configured to convey said printed circuit board along a conveyor path;

a printed circuit board support positioned to support a major portion of said printed circuit board between said lateral edge portions within an operating envelope of said pick and place machine, said printed circuit board support comprising a support base wherein

said support base defines a support surface,

said support base defines a leading edge, a trailing edge, and a pair of lateral edges,

said support base defines a cut-out formed therein, and

said cut-out is positioned between said pair of lateral edges and extends from said leading edge in the direction of said trailing edge to a position between said leading edge and said trailing edge, wherein said cut-out transects the thickness of said support base; and

a stop mechanism positioned to engage said printed circuit board support at a point within said cut-out.