Feeder system and method for supplying electrical components to a pickup location

• US 6,039,512 A
• Filed: 09/18/1997
• Issued: 03/21/2000
• Est. Priority Date: 09/18/1997
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Teoh, Ping Chow, Lim, Ka Tiek, Chooi, Kon Hing
• Primary Examiner(s): Ellis, Christopher P.
• Assistant Examiner(s): Bower, Kenneth W
• Application Number:
  US08/933,190
• Time in Patent Office: 915 Days
• Field of Search: 406/85, 406/86, 406/88, 406/93, 406/94, 406/95, 406/137, 406/192, 406/194, 221/278
• US Class Current: 406/85
• CPC Class Codes: H05K 13/028 Simultaneously loading a plurality of loose objects, e.g. by means of vibrations, pressure differences, magnetic fields

Abstract

A feeder system (1) and method supplies electrical components (20) to a pick-and-place machine (14). The feeder system (1) has a hopper (2) coupled by a passage (4) to a pickup location (3). The electrical components (20) are provided by air blasts to a first air outlet (6a) associated with the hopper (2) to agitate the components (20). Air blasts are concurrently supplied to a second and third air outlets (6b, 6c) located in the passage (6b) to thereby retain at least some of the components (20) therebetween. The third air outlet (6c) is disposed between the pickup location (3) and the second air outlet (6b) and in use an air blast from said third air outlet (6c) is effected immediately before an air blast from said second outlet (6b) is effected.

Claims

1. A feeder system for supplying electrical components to a pick-and-place machine, the feeder system comprising:

at least one storage means for storing said components;

a pickup location for supplying said components to said pick-and-place machine;

a passage providing communication between said storage means and said pickup location;

a first air outlet associated with said storage means for providing air blasts to agitate said components stored therein;

a second air outlet located in a surface of said passage for providing air blasts to move said components along said passage towards said pickup location;

a third air outlet located in a surface of said passage for providing air blasts, said third air outlet being disposed between said pickup location and said second air outlet;

a pressurised air supply means operatively coupled to said first, second, and third outlets by respective valves; and

a controller for selectively controlling said valves to concurrently supply air blasts to said second and third air outlets to thereby retain at least at least one of said components therebetween.

2. A feeder system as claimed in claim 1, wherein said controller selectively controls said valves such that said air blasts from said third air outlet will be effected immediately before said air blasts from said second air outlet is effected.

3. A feeder system as claimed in claim 1, wherein said controller selectively controls said valves such that pulsed said air blasts to said first air outlet occur only when there are no said air blasts being supplied from said second outlet.

4. A feeder system as claimed in claim 1, wherein said controller selectively controls said valves such that air blasts are concurrently supplied to said second and third air outlets when removal of one of said components from said pickup location is required.

5. A feeder system as claimed in claim 3, wherein said controller controls said valves to thereby concurrently cease supplying said air blasts from said second and third air outlets.

6. A feeder system as claimed in claim 5, wherein said passage comprises an inclined portion which is upwardly inclined towards said pickup location.

7. A feeder system as claimed in claim 6, wherein there is an intermediate portion of said passage between said pickup location and said upwardly inclined portion.

8. A feeder system as claimed in claim 7, wherein said intermediate portion has a component supporting surface angled relative to a component supporting surface of said upwardly inclined portion.

9. A method for supplying electrical components to a pick-and-place machine by a feeder system having a storage device coupled by a passage to a pickup location, the method comprising the steps of:

providing air blasts to a first air outlet associated with said storage device to agitate said components stored therein; and

concurrently supplying air blasts to second and third air outlets located in a said passage to thereby retain at least one of said components therebetween, wherein said third air outlet is disposed between said pickup location and said second air outlet and said air blasts from said third air outlet is effected immediately before air blasts from said second outlet is effected.

10. A method as claimed in claim 9, wherein said air blasts from said second and third outlets are effected when said pick-and-place machine requires to remove one said component from said pickup location.