Method of production using an electronic assembly pallet

• US 5,781,004 A
• Filed: 07/10/1996
• Issued: 07/14/1998
• Est. Priority Date: 07/10/1996
• Status: Expired due to Fees

• Current Assignee: PFI Vacuum Forming, Inc.
• Original Assignee: PFI Vacuum Forming, Inc.
• Inventors: Gaete, Jorge Robinson
• Primary Examiner(s): Nguyen, Vinh P.
• Assistant Examiner(s): KOBERT, RUSSELL MARC
• Application Number:
  US08/677,497
• Time in Patent Office: 734 Days
• Field of Search: 198/340, 198/349, 198/349.5-349.8, 29/430, 414/222, 324/158.1
• US Class Current: 324/757.01
• CPC Class Codes: G07C 3/00 Registering or indicating the condition or the working of machines or other apparatus, other than vehicles

Abstract

A pallet and a method of operation is provided with electrical signal and power connections so that burn-in and other quality assurance testing can be completed without removing the product unit from the pallet and the pallet can be redirected to subsequent, modified production operations based upon the results of the testing. The pallet is also fitted with a memory device that retains inventory and testing information related to the product unit placed on the pallet. The memory device can be read by, or written to, a router at various locations along the assembly process. The router can access the inventory and testing information about the product unit and can write unit-specific instructions to the memory device to redirect the product unit for subsequent unit-specific production operations. The pallet is also provided with electrical, fluid, and gas connections in order to facilitate testing of the product units placed on the pallet.

Claims

1. A process for using an electronic pallet comprising the steps of:

securing a product unit onto an electronic pallet;

writing inventory information about said unit to said pallet;

storing said inventory message in a storage memory in said pallet;

writing production operation information about said unit to said pallet;

storing said production operation information in said storage memory of said pallet;

placing said pallet on a conveyer system;

moving said pallet to a first location for a first production operation;

writing documentary information to said pallet with a router;

storing said documentary information in said storage memory of said pallet;

reading said documentary information from said pallet with a router;

writing modified production information about said unit to said pallet from said router; and

moving said pallet to a second location for a second production operation on said unit based upon said documentary information read by said router;

moving said pallet to a testing location;

connecting said unit to first electrical terminals on said pallet;

connecting factory electrical terminals to second electrical terminals on said pallet in order to establish electrical connections from said factory to said unit; and

testing said unit.

2. A process for using an electronic pallet as in claim 1 comprising the additional steps of:

moving said pallet to a testing location;

connecting said unit to first fluid connection fittings on said pallet;

connecting factory fluid connection fittings to second fluid connection on said pallet in order to establish fluid connections from said factory to said unit; and

testing said unit.

3. A process for using an electronic pallet as in claim 1 comprising the additional steps of:

moving said pallet to a testing location;

connecting said unit to first gas connection fittings on said pallet;

connecting factory gas connection fittings to second gas connection on said pallet in order to establish gas connections from said factory to said unit; and

testing said unit.

4. A process for using an electronic pallet as in claim 1 comprising the additional steps of:

interpreting the result of said testing of said unit;

writing said interpreted test results to said memory of said pallet;

writing modified production information about said unit to memory of said pallet; and

moving said pallet to a third location for a third production operation on said unit based upon said documentary information read by said router.

5. A process for using an electronic pallet as in claim 1 comprising the additional steps of:

stopping said pallet at a predetermined point along an assembly line;

reading said inventory information about said unit from said memory;

moving said pallet to a third location for a third production operation on said unit based upon said inventory information read by said router.