Placement of electronic components

• US 20040193302A1
• Filed: 03/28/2003
• Published: 09/30/2004
• Est. Priority Date: 03/28/2003
• Status: Active Grant

• Current Assignee: Accu-Assembly Incorporated
• Original Assignee: Accu-Assembly Incorporated
• Inventors: Kou, Yuen-Foo Michael
• Granted Patent: US 6,879,869 B2
• Time in Patent Office: Days
• US Class Current: 700/114
• CPC Class Codes: H05K 13/0882 Control systems for mounting machines or assembly lines, e.g. centralized control, remote links, programming of apparatus and processes as such H05K13/083 takes precedence

Abstract

An electronic component placement machine is disclosed that includes a series of feeders adapted to supply discrete electronic components for subsequent placement onto a destination circuit board; at least one data module coupled to each feeder, each data module comprising a memory storage device; at least one communications module coupled to each feeder, each communications module comprising a data module-transceiver coupled to a memory storage device of the associated data module; a pick head, movable between selected feeders for sequentially picking the discrete electronic components from a respective feeders for subsequent placement onto a destination circuit board; and a pick head-transceiver secured to the pick head for movement therewith between feeders, the pick head-transceiver arranged to communicate over a duplex communications channel with a data module-transceiver of a selected feeder when the pick head is positioned to pick from the selected feeder.

Claims

1. An electronic component placement machine comprising:

a series of feeders adapted to supply discrete electronic components for subsequent placement onto a destination circuit board;

a data module coupled to each feeder, each data module comprising a memory storage device;

a communications module coupled to each feeder, each communications module comprising a data module transceiver that is coupled to the memory storage device;

a pick head, movable between selected feeders for sequentially picking the discrete electronic components from a respective feeders for subsequent placement onto a destination circuit board; and

a pick head transceiver secured to the pick head for movement therewith, the pick head transceiver adapted to communicate over a duplex communications channel with the data module transceiver of a selected feeder when the pick head is positioned to remove components from the selected feeder.

2. The electronic component placement machine of claim 1 wherein the data module is securely coupled to a reel of electronic components mounted to the feeder.

3. The electronic component placement machine of claim 1 wherein the data module is securely coupled to a tray of electronic components and wherein the tray of electronic components is coupled to the feeder.

4. The electronic component placement machine of claim 1 wherein the memory storage device is adapted to store a remaining inventory value that indicates the number of discrete electronic components that are available at the associated feeder;

and

wherein the data module transceiver is adapted to transmit the stored remaining inventory value to the pick head transceiver over the duplex communications channel.

5. The electronic component placement machine of claim 4:

wherein the data module further comprises a processing unit; and

wherein the pick head transceiver is adapted to transmit a signal to the data module transceiver to indicate that the pick head has removed a component from the selected feeder and the processing unit is adapted to update the remaining inventory value in the memory storage device in response to the received signal.

6. The electronic component placement machine of claim 4 wherein the pick head transceiver comprises:

a memory storage unit adapted to store values that indicate a minimum acceptable inventory of available electronic components at each feeder; and

a processing unit coupled to the memory storage unit;

wherein the processing unit is adapted to compare the transmitted remaining inventory value with the stored minimum acceptable inventory value associated with the selected feeder.

7. The electronic component placement machine of claim 1 wherein each data module further comprises:

a sensing element responsive to atmospheric moisture content; and

a processing unit adapted to store data associated with sensed atmospheric moisture content over time in the memory storage device.

8. The electronic component placement machine of claim 7 wherein the data module-transceiver is adapted to transmit the data associated with sensed atmospheric moisture content over time to the pick head transceiver over the duplex communications channel.

9. The electronic component placement machine of claim 7 wherein the processing unit is further adapted to determine, based on the stored data associated with the sensed atmospheric moisture content over time, whether the electronic components of the selected feeder are suitable for subsequent placement upon the destination circuit board.

10. The electronic component placement machine of claim 9 wherein the data module transceiver is adapted to transmit data indicating suitability for installation of the electronic components of the selected feeder to the pick head-transceiver over the duplex communications channel.

11. The electronic component placement machine of claim 1 wherein the duplex communications channel utilizes wireless technology.

12. The electronic component placement machine of claim 11 wherein the wireless technology comprises radio-frequency transmission.

13. The electronic component placement machine of claim 11 wherein the wireless technology comprises infrared transmission.

14. The electronic component placement machine of claim 1 wherein the memory storage device is adapted to store identification data associated with the discrete electronic components of the associated feeder.

15. The electronic component placement machine of claim 14 wherein the data module transceiver is adapted to transmit the stored component identification data to the pick head-transceiver.

16. The electronic component placement machine of claim 15 wherein the pick head transceiver comprises:

a memory unit; and

a processor coupled to the memory unit;

wherein the processor is adapted to store the transmitted component identification data in the memory unit.

17. The electronic component placement machine of claim 16 wherein the pick head transceiver is adapted to read data from an identification marker that is secured to the destination circuit board and to create an association between the stored component identification data and the circuit board identification data associated with the destination circuit board.

18. The electronic component placement machine of claim 16 wherein the memory unit is adapted to store a predetermined sequence of data associated with a desired parts installation;

and

wherein the processor is adapted to compare the communicated identification data with the predetermined sequence of data.

19. The electronic component placement machine of claim 18 wherein the processor is adapted to alert an operator if the communicated identification data does not match the predetermined sequence of data.

20. The electronic component placement machine of claim 7 wherein the data module is detachable from the communications module.

21. The electronic component placement machine of claim 1 wherein the data module comprises a first power source and the communications module comprises a second power source dedicated to the data module transceiver.

22. The electronic component placement machine of claim 1 further comprising a plurality of pick heads coupled to a periphery of a rotatable turret and wherein the plurality of feeders are arranged in linear fashion and are movable in a linear direction.

23. A method of operating an electronic component placement machine comprising:

positioning a pick head proximate a selected one of a plurality of electronic component feeders;

establishing a duplex communication channel between a pick head transceiver coupled to the pick head and a data module transceiver coupled to the selected feeder;

transmitting operational data between the pick head transceiver and the data module transceiver over the duplex communications channel;

disengaging the duplex communications channel; and

positioning the pick head proximate a second selected feeder.

24. The method of claim 23 wherein the plurality of feeders are arranged in a linear fashion and are stationary;

and

wherein positioning the pick head comprises moving the pick head.

25. The method of claim 23 wherein the pick head is one of a plurality of pick heads coupled to a periphery of a rotatable turret and wherein the plurality of feeders are arranged in linear fashion and are movable in a linear direction;

and

wherein positioning the pick head and the selected feeder proximate each other comprises rotating the turret and moving the plurality of feeders in the linear direction.

26. The method of claim 23 wherein the plurality of feeders comprises a plurality of trays;

and

wherein positioning the pick head and the selected feeder proximate each other comprises positioning the pick head above a selected tray.

27. The method of claim 23 wherein the duplex communications channel comprises a wireless communications channel.

28. The method of claim 27 wherein the wireless communications channel is adapted to implement infrared based communication technology.

29. The method of claim 27 wherein the wireless communications channel is adapted to implement radio-frequency based communication technology.

30. The method of claim 23 wherein the duplex communication channel is a hard wired communication channel.

31. The method of claim 23 wherein the duplex communications channel is established when the pick head and the selected feeder are proximate each other.

32. The method of claim 23 wherein transmitting the operational data comprises transmitting identification data associated with the electronic components of the selected feeder from the data module transceiver to the pick head transceiver.

33. The method of claim 32 further comprising determining whether the transmitted identification data matches a predetermined sequence of data associated with a desired parts installation.

34. The method of claim 23 wherein transmitting the operational data comprises transmitting moisture exposure data associated with the electronic components of the selected feeder from the data module transceiver to the pick head transceiver.

35. The method of claim 34 further comprising alerting an operator if the transmitted moisture exposure data is not acceptable.

36. The method of claim 34 further comprising preventing the pick head from picking a component from the selected feeder if the transmitted moisture exposure data is not acceptable.

37. The method of claim 23 wherein transmitting the operational data comprises transmitting data that indicates available inventory at the selected feeder from the data module transceiver to the pick head transceiver.

38. The method of claim 37 further comprising alerting an operator if the transmitted available inventory data indicates a value below a predetermined threshold value.

39. The method of claim 23 further comprising removing an electronic component from the selected feeder;

and

wherein transmitting the operational data comprises sending a signal from the pick head transceiver to the data module transceiver indicating that a component has been removed.

40. The method of claim 39 further comprising updating an available inventory value associated with the selected feeder and storing the updated value in a memory storage device coupled to the selected feeder.