High-speed tablet sorting machine

• US 5,240,118 A
• Filed: 09/18/1992
• Issued: 08/31/1993
• Est. Priority Date: 09/18/1992
• Status: Expired due to Term

• Current Assignee: Modern Controls, Inc. (Ametek Incorporated)
• Original Assignee: Modern Controls, Inc. (Ametek Incorporated)
• Inventors: Mayer, Daniel W.
• Primary Examiner(s): Olszewski, Robert P.
• Assistant Examiner(s): REICHARD, DEAN ALAN
• Application Number:
  US07/947,064
• Time in Patent Office: 347 Days
• Field of Search: 209/539, 209/644, 209/658, 209/660, 209/919, 209/932, 198/380, 198/392
• US Class Current: 209/539
• CPC Class Codes: A61J 2200/74 for weight
• CPC Class Codes: A61J 3/06 into the form of pills, lozenges or dragees
• CPC Class Codes: B07B 13/04 according to size
• CPC Class Codes: B07B 13/16 Feed or discharge arrangements
• CPC Class Codes: B07C 5/36 Sorting apparatus characterised by the means used for distribution sorting according to destination B07C3/003, B07C3/02
• CPC Class Codes: B07C 5/365 using a single separation means
• CPC Class Codes: G01G 17/00 Apparatus for or methods of weighing material of special form or property determining weight by measuring volume G01F
• CPC Class Codes: Y10S 209/919 Rotary feed conveyor
• CPC Class Codes: Y10S 209/932 Fluid applied to items

Abstract

An apparatus for feeding tablets in an aligned and uniformly oriented sequence onto a tablet measuring device, including a movable turntable having a deflector for guiding the tablets to a circumferential edge, a guide member and plow assembly respectively aligned in parallel and spaced apart relationship, the guide member having longitudinally-spaced air jets and the plow assembly having respective edge surfaces for slidably guiding tablets to a uniform orientation, and including a gate for removing particles and broken tablets from the channel to prevent them from being conveyed onto the measuring system.

Claims

1. An apparatus for conveying tablets in an aligned stream and uniform orientation, comprising,

a) a rotatable turntable and means for loading bulk quantities of tablets onto said turntable, including means for deflecting said tablets toward the outer periphery of said turntable;

b) a guide member positioned above and closely adjacent said turntable, said guide extending from a first outer periphery point to a second outer periphery point, and having a plurality of spaced apart air jets along its extent;

c) an adjustable gate positioned in parallel and spaced apart relation to said guide, said gate having a portion thereof positionable to slidably engage against top surfaces of said tablets; and

d) an opening in said gate, said opening being smaller than the height of a tablet and positioned in facing relation to said turntable.

2. The apparatus of claim 1, wherein said adjustable gate further comprises a forward plow portion and a rearward plow portion, said forward plow portion having an inclined surface portion positionable close to said turntable and inclined upwardly away from said guide.

3. The apparatus of claim 2, wherein said rearward plow portion further comprises an inclined surface portion inclined downwardly away from said guide.

4. The apparatus of claim 3, further comprising means for vertically adjusting said forward plow portion and said rearward plow portion.

5. The apparatus of claim 1, further comprising an air manifold adjacent said guide member, said air manifold having at least two channels therein, said channels being coupled to air passages for forming said air jets.

6. The apparatus of claim 5, wherein one of said channels is coupled to a plurality of first air passages, said plurality of first air passages aligned in respective parallel alignment with each other and with said turntable.

7. The apparatus of claim 6, wherein the other of said channels is coupled to a plurality of second air passages, said plurality of second air passages aligned in respective parallel alignment with each other and inclined downwardly toward said turntable.

8. The apparatus of claim 7, wherein said first and second passages are respectively alternately positioned along a portion of the elongate length of said air manifold.

9. The apparatus of claim 8, further comprising means for vertically adjusting said air manifold.

10. The apparatus of claim 9, wherein said manifold further comprises an elongate length proximate the elongate length of said adjustable gate.

11. An apparatus for conveying tablets in uniform alignment and orientation from the peripheral edge of a rotating turntable, comprising:

a guide channel formed from a first point on the peripheral edge of said turntable to a second point on the peripheral edge of said turntable, said guide channel formed between a guide member and an adjustable gate aligned parallel to said guide member;

said adjustable gate comprising a forward plow and a rearward plow, and means for vertically adjusting both of said plows;

an air manifold adjacent said guide member, said air manifold having a plurality of passages opening toward said channel; and

means on said adjustable gate for slidably contacting the upper surface of tablets conveyed along said channel.

12. The apparatus of claim 11, wherein said forward plow further comprises an inclined surface portion positionable adjacent to said turntable, said surface portion being inclined upwardly away from said channel.

13. The apparatus of claim 12, wherein said rearward plow further comprises an inclined surface portion which further comprises said means for slidably contacting the upper surface of tablets.

14. The apparatus of claim 13, wherein said rearward plow further comprises an open portion facing said turntable, said open portion being sized smaller than a tablet.

15. The apparatus of claim 14, wherein said plurality of air manifold passages further comprise a first set of passages aligned proximately parallel with said turntable and a second set of passages inclined toward said turntable and said guide channel.