Apparatus for use in parts assembly

• US 5,781,443 A
• Filed: 10/30/1996
• Issued: 07/14/1998
• Est. Priority Date: 10/30/1996
• Status: Expired due to Fees

• Current Assignee: BRP US Incorporated (Bombardier Incorporated)
• Original Assignee: John G. Fruncek, William L. Street
• Inventors: Fruncek, John G., Street, William L.
• Primary Examiner(s): RUGGIERO, JOSEPH F
• Application Number:
  US08/741,260
• Time in Patent Office: 622 Days
• Field of Search: 364/478.02, 364/478.04, 364/468.01, 364/468.13, 414/273, 414/274, 29/701, 29/702, 29/703, 29/704, 29/707
• US Class Current: 700/214
• CPC Class Codes: G05B 19/41805 characterised by assembly
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
• CPC Class Codes: Y02P 90/80 Management or planning

Abstract

An apparatus for use in assembling kits of parts for use in manufacturing where workers pick the components or parts from bins that are stocked with the parts. The apparatus includes sensing means to detect the presence of a worker'"'"'s hand in a bin and a display indicates the number of components in a bin that are to be retrieved or picked for a kit for a particular product. Once the sensing means senses the presence of a worker'"'"'s hand in a bin, the display will be automatically dimmed for a predetermined time which is proportional to the number of components or parts which are to be taken from the bin. The apparatus is preferably configured so that adjacent modular units will not interfere with one another with respect to the sensing functionality and the sensing operation by the three detectors in each modular unit are also time multiplexed so that interference among the three is not experienced.

Claims

1. Apparatus for use in assembling multiple object assemblies, wherein various objects are located in individual bins, said apparatus comprising:

a frame structure adapted to define a plurality of bins located adjacent one another in at least one row;

a plurality of sensor means associated with preselected bins, said sensor means being adapted to detect the presence-and duration of access by a hand in an area of said associated bin, said sensor means generating an electrical signal responsive to a hand being detected;

a plurality of display means associated with preselected bins, said display means being adapted to provide a visual display of component quantities responsive to electrical signals being received, said display means being adapted to provide said visual display in at least first and second display modes upon activation;

processing means adapted to receive said signals from said sensor means and generate said signals and apply the same to said display means, and having a communication port for connecting a programming means to program said processing means so that a predetermined quantity is initially displayed at predetermined bins, said display means at each predetermined bin changing from said first display mode to said second display mode responsive to a hand being initially detected, said display means operating in said second display mode for a predetermined time that is directly proportional to the quantity visually displayed for each bin.

2. Apparatus as defined in claim 1 wherein each of said sensor means is supported by said frame structure.

3. Apparatus as defined in claim 1 wherein the size of each of said bins can be varied to accommodate different sized components, each bin having at least one of said display means associated therewith.

4. Apparatus as defined in claim 1 wherein said first display mode displays said quantity at a first intensity value, and said second display mode displays said quantity at a different intensity value.

5. Apparatus as defined in claim 1 wherein said first display mode displays said quantity at a first intensity value, and said second display mode displays a blinking quantity display at said first intensity value.

6. Apparatus as defined in claim 1 wherein said processing means is adapted to selectively activate and deactivate each of said display means.

7. Apparatus as defined in claim 1 wherein said sensor means comprises a light producing means adapted to direct a beam of light into at least a portion of each said preselected bin and a light detecting means adapted to detect the intensity of reflected light in said portion of said preselected bin, said light detecting means generating an electrical intensity signal proportional to said detected light intensity, said detecting means producing an intensity signal indicative of greater intensity when a hand is present in said preselected bin.

8. Apparatus as defined in claim 7 wherein said light producing means is capable of producing light having a variable intensity, said processing means being adapted to control said light producing means to produce a predetermined light intensity to result in a predetermined detected light intensity by said light detecting means during calibration of a stationary target for a predetermined time period.

9. Apparatus as defined in claim 8 wherein said light producing means comprises at least one variable intensity infrared light emitting diode.

10. Apparatus as defined in claim 9 wherein each of said light producing means and light detecting means have a programmable operating frequency, said light detecting means and light producing means for each bin being programmable, thereby enabling said light producing means and light detecting means to operated at a frequency in a subject bin that is different from the frequency of operation of said light producing means and light detecting means in an adjacent bin.

11. Apparatus as defined in claim 10 wherein said light detecting means is adapted to generate said electric signal when the detected light intensity is above an adjustable detected intensity threshold.

12. Apparatus as defined in claim 9 wherein said light producing means comprises a pair of said light emitting diodes located on opposite sides of said light detecting means operatively connected to said frame structure above said bin, said light emitting diodes producing a generally conical volume of light in said bin, said light detecting means being adapted to detect a steady state light intensity from light reflected from stationary objects and the uncovered bottom of said bin.

13. Apparatus as defined in claim 1 wherein said apparatus includes multiple rows of bins, said bins being of variable size to retain different quantities and sizes of objects, there being at least one sensor means and at least one display means for each bin, said processing means being adapted to extinguish selected display means that are associated with one of said bins that has more than one sensor means and display means associated therewith.

14. A system for use in assembling multiple component assemblies wherein various components are located in a plurality of bins arranged in at least one row of bins, said apparatus comprising:

a frame structure providing support for each row of bins, and providing vertical spacing between rows in the event more than one row of bins is provided;

a plurality of at least one type of modular unit connected to said frame structure, each unit being associated with a predetermined number of minimum sized bin areas, said unit comprising;

a sensor means for each of said bin areas, each said sensor means being adapted to detect the presence and duration of access of a transient object in said bin area, and generating an electrical signal indicative of a transient object being detected;

a display means for each of said bin areas, each said display means being selectively operable and adapted to provide a visual display of quantities of components to be removed for one of the assemblies responsive to display signals being received, said display means being adapted to provide said visual display in at least first and second display modes upon activation;

unit processing means adapted to receive said signals from said sensor means and generate said display signals and apply the same to said display means, and having a communication port for connecting to a concentrator processing means, each operable one of said display means at each predetermined bin area changing from said first display mode to said second display mode responsive to a transient object being initially detected, said display means operating in said second display mode for a predetermine time that is directly proportional to the quantity displayed for each bin;

concentrator processing means connected to each of said unit processing means and being adapted to program each of said unit processing means so that a predetermined quantity is initially displayed at predetermined bins.

15. A system as defined in claim 14 wherein the size of a bin can be increased to include multiple bin areas, extending beyond a single modular unit to accommodate different sized components.

16. A system as defined in claim 14 wherein said sensor means comprises a light producing means adapted to direct a beam of light into said bin area and a light detecting means adapted to detect reflected light in said area, said light detecting means generating an electrical intensity signal proportional to said detected light intensity, said detecting means producing an intensity signal indicative of greater intensity when a transient object is present in said bin area.

17. A system as defined in claim 14 wherein said concentrator processing means is adapted to selectively control each display means to be operable or inoperable so that a bin that is larger than minimum size and having more than one display means could be controlled to have only one operable display means.

18. A system as defined in claim 16 wherein said unit processing means receives said intensity signals generally continuously and detects a transient object when said intensity signals exceed a predetermined threshold intermittently over a predetermined number of successive times.

19. Apparatus for use in a worker assembling multiple component assemblies wherein various components are located in a plurality of bins arranged in at least one row of bins, said apparatus being adapted to provide a normal display of the number of components that are to be removed from each bin during an assembling process, and when a worker'"'"'s hand is in a bin, to provide an alterated display, comprising:

a sensor means for sensing generally predetermined sized areas of said bins, said sensor means being adapted to detect the presence and duration of access by a worker'"'"'s hand in said area, said sensor means generating an output signal that varies over time in proportion to the amount of reflected light detected at

at least one display means for each bin, said display means being adapted to provide said numerical display of component quantities, said display means being adapted to provide said altered display responsive to a control signal being received;

processing means adapted to receive said output signal from said sensor means and selectively generate said control signal and apply the same to said display means, said processing means measuring the magnitude and form of said output signal over a predetermined time period and producing said control signal when the magnitude and form satisfy predetermined criteria.

20. Apparatus as defined in claim 19 wherein said altered display is dimmer than said normal display.

21. Apparatus as defined in claim 19 wherein said sensor means comprises a light producing means adapted to direct a beam of light into said bin area and a light detecting means adapted to detect reflected light in said area, said light detecting means generating said output signal proportional to said detected light intensity.