Method and apparatus for loading electronic components

• US 5,984,079 A
• Filed: 07/12/1996
• Issued: 11/16/1999
• Est. Priority Date: 07/12/1996
• Status: Expired due to Term

• Current Assignee: Electro Scientific Industries Incorporated (MKS Instruments Incorporated)
• Original Assignee: Electro Scientific Industries Incorporated (MKS Instruments Incorporated)
• Inventors: Garcia, Douglas J.
• Primary Examiner(s): Terrell, William E.
• Assistant Examiner(s): DILLON JR, JOSEPH A
• Application Number:
  US08/679,134
• Time in Patent Office: 1,222 Days
• Field of Search: 198/397, 198/392, 198/406, 221/157, 221/167, 221/168, 221/169, 221/265, 221/278, 193/48, 193/44
• US Class Current: 198/397.02
• CPC Class Codes: G01R 31/013 Testing passive components testing relays G01R31/3278; testing electrical windings, e.g. inductors G01R31/72

Abstract

A method and an apparatus for loading and positioning of elongate terminated electronic components include a load plate having vertical slots extending therethrough, the slots being spaced apart at regular intervals and each slot having parallel opposing sidewalls. Components are positioned and retained in the load plate slots with the long axes of the components in an orientation transverse to the upper surface of the load plate. At a predetermined time, each component is allowed to drop out of the slot and through a curved chute, the chute bending from an upper opening to a medial point and flaring outwardly from the medial point to a lower opening, and having a width at the medial point larger than the short axis of the component and a width at the lower opening slightly larger than the long axis of the component so that the component is rotated through about 90° on passage through the chute. As the component exits the bottom of the chute, it enters and is retained in a shallow rectangular pocket in a test plate. Because of the 90° rotation, the long axis of the component is oriented generally parallel to the upper surface of the test plate and is thus making the component available for testing and processing by conventional means.

Claims

1. Apparatus for loading and positioning multiple elongate components, each of which having unequal length and width dimensions that define a short axis and a long axis of the component, the apparatus comprising:

a load plate having at least one slot extending therethrough, the slot having two opposing sidewalls and being sized to receive and hold the component with its long axis in an orientation transverse to an upper surface of the load plate;

a guide element delivering the component to the slot;

at least one curved chute, the chute being positioned immediately below and in communication with the slot, the chute bending from an upper opening to a medial point and flaring outwardly from the medial point to a lower opening, the chute having a width at the medial point larger than the short axis of the component and a width at the lower opening slightly larger than the long axis of the component so that the component is rotated through an angle of about 90°

during passage through the chute;

a test plate having upper and lower surfaces and at least one pocket, the pocket being positionable immediately below and in communication with the curved chute, and being shaped to receive and hold the component with its long axis generally parallel to the upper and lower surfaces of the test plate; and

a drive mechanism for imparting synchronous motion to the load plate, the curved chute, and the test plate in response to an applied motive force.

2. The apparatus of claim 1, in which the chute is formed in a chute plate positioned immediately below and parallel to the load plate.

3. The apparatus of claim 2, additionally comprising a stationary film plate positioned between the load plate and the chute plate for retaining the component in the slot during alignment of the load plate, chute plate, and test plate.

4. The apparatus of claim 1 in which the component has opposite sides that extend along the long axis and in which the pocket extends through the test plate from the upper surface to the lower surface so that the component is retained in the pocket with a lower long axis side of the component exposed from the lower surface of the test plate.

5. The apparatus of claim 4, in which the test plate additionally comprises at least one vacuum passageway that is in communication with the pocket for application of vacuum pressure for retaining the component in the pocket.

6. Apparatus for loading and positioning multiple elongate components, each of which having unequal length and width dimensions that define a short axis and a long axis corresponding to respective opposing short axis sides and opposing long axis sides of the component, the apparatus comprising:

a circular load plate having at least one slot positioned on an outer circumference of the load plate and extending therethrough, the slot having two opposing sidewalls and being sized to receive and hold the component with its long axis in an orientation transverse to an upper surface of the load plate;

a guide element delivering the component to the slot;

at least one curved chute, the chute being positioned immediately below and in communication with the slot, the chute additionally bending from an upper opening to a medial point and flaring outwardly from the medial point to a lower opening, the chute having a width at the medial point larger than the short axis of the component and a width at the lower opening larger than the long axis of the component so that the component is rotated through an angle of about 90°

during passage through the chute;

a circular test plate having upper and lower surfaces and at least one pocket positioned on an outer circumference of the chute plate, the pocket being positionable immediately below and in communication with the curved chute, and being shaped to receive and hold the component with its long axis generally parallel to the upper and lower surfaces of the test plate; and

a drive mechanism for imparting synchronous motion to the load plate, the curved chute, and the test plate in response to an applied motive force;

whereby, upon exiting the chute, the component is received and retained in the pocket with an upper long axis side of the component exposed from one of the surfaces of the test plate.

7. The apparatus of claim 6, in which the pocket extends through the test plate from the upper surface to the lower surface so that the component is retained in the pocket with a lower long axis side of the component exposed from the lower surface of the test plate.

8. The apparatus of claim 7, in which the test plate additionally comprises at least one vacuum passageway that is in communication with the pocket for application of vacuum pressure for retaining the component in the pocket.

9. The apparatus of claim 6, in which the chute is formed in an outer circumference of a circular chute plate positioned immediately below and parallel to the load plate.

10. The apparatus of claim 9, in which the drive mechanism rotates the load plate, chute plate, and test plate in the same direction and at the same speed, the test plate being angled away from the load plate and the chute plate to provide access to the component on the upper surface of the test plate following retention of the component in the pocket.

11. The apparatus of claim 9, additionally comprising a stationary film plate positioned between the load plate and the chute plate for retaining the component in the slot during alignment of the load plate, chute plate, and test plate.

12. A method for loading and positioning multiple elongate components, each of which having unequal length and width dimensions that define a short axis and a long axis corresponding to respective opposing short axis sides and opposing long axis sides of the component, the method comprising:

providing a load plate having at least one slot extending therethrough, the slot having two opposing sidewalls and being sized to receive and hold the component with its long axis in an orientation transverse to an upper surface of the load plate;

delivering the component to the slot;

placing and retaining the component in the slot with long axis sides of the component facing the sidewalls;

positioning a curved chute immediately below and in communication with the slot, the chute bending from an upper opening to a medial point and flaring outwardly from the medial point to a lower opening, the chute having a width at the medial point larger than the short axis of the component and a width it the lower opening larger than the long axis of the component so that the component is rotated through an angle of about 90°

during passage through the chute;

providing a test plate having upper and lower surfaces and at least one pocket, the pocket being, positionable immediately below and in communication with the curved chute, and being shaped to receive and hold the component;

imparting motion to the load plate, curved chute, and test plate to cause the component to drop out of the slot of the load plate, pass through the curved chute, and drop into the pocket of the test plate; and

retaining the component in the pocket with the long axis of the component generally parallel to the upper and lower surfaces of the test plate and an upper long axis side of the component exposed from the upper surface of the test plate.

13. The method of claim 12, in which the chute is formed in a chute plate and the method additionally comprises positioning the chute plate immediately below and parallel to the load plate.

14. The method of claim 13, additionally comprising positioning a stationary film plate between the load plate and the chute plate to retain the component in the slot during alignment of the load plate, chute plate and test plate.

15. The method of claim 12, in which the pocket extends through the test plate from the upper surface to the lower surface so that the component is retained in the pocket with a lower long axis side of the component exposed from the lower surface of the test plate.

16. The method of claim 15, in which the component is retained in the pocket by means of vacuum pressure.

17. A method for loading and positioning multiple elongate components, each of which having unequal length and width dimensions that define a short axis and a long axis corresponding to respective opposing short axis sides and opposing long axis sides of the component, the method comprising:

providing a circular load plate having at least one slot positioned on an outer circumference of the load plate and extending therethrough, the slot having two opposing sidewalls and being sized to receive and hold the component with its long axis in an orientation transverse to an upper surface of the load plate;

delivering the component to the slot;

placing and retaining the component in the slot with the long axis sides of the component facing the sidewalls;

positioning a cursed chute immediately below and in communication with the slot, the chute bending from an upper opening to a medial point and flaring outwardly from the medial point to a lower opening, the chute having a width at the medial point larger than the short axis of the component and a width at the lower opening larger than the long axis of the component so that the component is rotated through an angle of about 90°

during passage through the chute;

providing a circular test plate having upper and a lower surfaces and at least one pocket positioned on an outer circumference of the chute plate, the pocket being positionable immediately below and in communication with the curved chute, and being shaped to receive and hold the component;

imparting rotary motion to the load plate, curved chute, and test plate to cause the component to drop out of the slot of the load plate, pass through the curved chute, and drop into the pocket of the test plate; and

retaining the component in the pocket with the long axis of the component generally parallel to the upper and lower surfaces of the test plate and an upper long axis side of the component exposed from the upper surface of the test plate.

18. The method of claim 17, in which the pocket extends through the test plate from the upper surface to the lower surface so that the component is retained in the pocket with a lower long axis side of the component exposed from the lower surface of the test plate.

19. The method of claim 18, in which the component is retained in the pocket by means of vacuum pressure.

20. The method of claim 17, in which the chute is formed in an outer circumference of a circular chute plate and the method additionally comprises positioning the chute plate immediately below and parallel to the load plate.

21. The method of claim 20, in which the rotary motion imparted to the load plate, chute plate, and test plate rotates them in the same direction and at the same speed, the test plate being angled away from the load plate and the chute plate to provide access to the component from the upper surface of the test plate following retention of the component in the pocket.

22. The method of claim 20, additionally comprising positioning a stationary film plate between the load plate and the chute plate for retaining the component in the slot during alignment of the load plate, chute plate, and test plate.