Article inspection and stabilizing system

• US 4,830,180 A
• Filed: 01/15/1988
• Issued: 05/16/1989
• Est. Priority Date: 01/15/1988
• Status: Expired due to Term

• Current Assignee: Key-Pak Technologies LLC
• Original Assignee: Key Technology, Inc. (Duravant LLC)
• Inventors: Ruthven, Robert E., Paulson, Howard E., Ferguson, W. Sheldon
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Kimms, Lyle K.
• Application Number:
  US07/144,497
• Time in Patent Office: 487 Days
• Field of Search: 198/446, 198/445, 198/454, 198/458, 198/469.1, 198/502.2, 198/503, 198/525, 198/526, 198/534, 198/604, 198/603, 198/605, 198/610-612, 198/620, 198/780, 198/836 , 198/383, 209/539
• US Class Current: 198/836.3
• CPC Class Codes: B65G 21/2054 comprising elements movable in the direction of load-transport
• CPC Class Codes: B65G 2207/14 Combination of conveyors

Abstract

An article inspection system is described wherein articles are fed to a working flight of a conveyor moving at high velocity. The articles are delivered through a stabilizer to an article inspection device. The articles are fed to the working flight of the conveyor in a laterally spaced relationship and at a velocity different than the high forward velocity of the continuously moving working flight. The stabilizer is utilized to adjust the velocity of the individual articles to match that of the working flight, and to stabilize the articles individually in laterally spaced orientations across the working flight. The stabilizer includes a flexible, open mesh surface that is mounted by a resilient core to a rotatable shaft. A drive wheel is mounted to the shaft and engages the working flight to rotate the open mesh surface at a velocity matching that of the working flight. Articles are engaged by the open mesh fabric and are gently brought into a stabilized condition against the working flight as it moves along. The stabilized articles are then moved at the high velocity of the working flight past an inspection device which then inspects each individual article.

Claims

1. An article inspection system for inspecting a plurality of laterally spaced articles while moving along a longitudinal path, comprising:

a conveying means having a working flight for movement at a prescribed high velocity along the longitudinal path from an infeed station toward an article inspection station;

feed means for depositing the articles in laterally spaced relation onto the working flight at the infeed station at a different velocity than the prescribed high velocity of the working flight thereby causing relative movement between one or more of the laterally spaced articles and the working flight;

article stabilizing means having a surface moving at the prescribed high velocity of the working flight for engaging and bringing the moving articles to rest against the working flight in the laterally spaced relation and stationary on the working flight such that the articles and working flight move in unison toward the inspection station at the prescribed high velocity of the working flight;

wherein the article stabilizing means is comprised of;

a shaft rotatably mounted to the conveyor means and extending laterally over the working flight;

an open flexible mesh sleeve defining the surface of the article stabilizing means;

resilient core means supporting the open flexible mesh and rotating therewith in a circular path adjacent the working flight and for resilient deflection responsive to engagement of the open flexible means and resilient core means with an article on the working flight; and

drive means for rotating the open flexible mesh about the axis of the shaft responsive to movement of the working flight at a velocity equal to that of the working flight; and

inspection means at the inspection station for inspecting the plurality of laterally spaced articles at the inspection station.

2. The article inspection system as claimed by claim 1 wherein the resilient core means is comprised of a plurality of elongated resilient core members operatively mounted to the drive means and mounting the surface for resilient engagement with articles on the working flight.

3. The article inspection system as claimed by claim 1 wherein the resilient core is comprised of:

a plurality of flexible resilient ribs having inward ends operatively mounted to the drive means and extending transversely across the working flight; and

wherein the resilient ribs having outward projecting ends supporting the flexible open mesh sleeve.

4. The article inspection system as claimed by claim 1 wherein the drive means is comprised of a friction member mounted on the shaft in rolling contact with the working flight for rotating the shaft responsive to movement of the working flight.

5. The article inspection system as claimed by claim 1 wherein the resilient core means supports the surface of the stabilizer means in a substantially cylindrical peripheral configuration adjacent to and extending transversely across the working flight.

6. The article inspection system as claimed by claim 1 wherein the open mesh sleeve is formed of a plastic material such as polypropylene.

7. The article inspection system as claimed by claim 3 wherein the resilient ribs are formed of neoprene.