Table with carrier balls designed to rotate in directions extending along two parallel orthogonal lines

• US 5,240,102 A
• Filed: 03/13/1992
• Issued: 08/31/1993
• Est. Priority Date: 03/15/1991
• Status: Expired due to Term

• Current Assignee: Lausanne Bobst SA
• Original Assignee: Bobst SA (JBF Finance SA)
• Inventors: Lucas, Jean-Jacques
• Primary Examiner(s): Valenza, Joseph E.
• Application Number:
  US07/850,820
• Time in Patent Office: 536 Days
• Field of Search: 98/371, 98/418.5, 98/431, 98/436, 98/456, 98/468.01, 98/468.9, 98/750, 98/779, 98/782, 98/787, 98/497, 193/35 MD
• US Class Current: 198/456
• CPC Class Codes: B65G 13/10 Switching arrangements
• CPC Class Codes: B65G 17/24 comprising a series of rollers which are moved , e.g. over a supporting surface, by the traction element to effect conveyance of loads or load-carriers
• CPC Class Codes: B65G 2207/18 Crossing conveyors
• CPC Class Codes: B65G 47/244 by turning them about an axis substantially perpendicular to the conveying plane
• CPC Class Codes: B65H 2701/176 Cardboard
• CPC Class Codes: B65H 31/3054 by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers

Abstract

A table for orthogonally sorting flat workpieces comprising a tray with freely rotatable carrier balls protruding from both surfaces of the tray, an arrangement engaging the balls to support the balls and to rotate them in either direction along a first line of motion, this arrangement being either a continuously moving belt or a plurality of parallel positioned rollers. The table also includes an arrangement for obtaining relative movement between the belt or parallel rollers and the tray to cause a rotation of the balls along a second line extending perpendicular to the first line.

Claims

1. A table with crosswise operating motor-driven carrier balls designed for orthogonally sorting of flat workpieces, said table comprising a horizontal tray with freely rotatable carrier balls arranged within said tray so as to protrude from both upper and lower surfaces of the tray;

means arranged underneath the tray for supporting said carrier balls;

aligning plates being adjustably positioned above the tray to allow movement of the tray therebeneath;

first means for imparting rotary motion in a first horizontal direction along a first line to the carrier balls being supported on said supporting means;

second means for imparting to the carrier balls a second rotary motion in a second horizontal direction along a second line extending perpendicular to the first direction;

means for controlling and checking the application and amplitude of said first and second rotary motions so as to impart to the carrier balls at contact points of the balls with the workpiece a rotary motion resulting from a variable amplitude in any direction of the reference plane defined by said first and second lines;

means for carrying the workpieces onto the balls of the tray for processing; and

means for collecting the workpieces at an outlet of the tray after processing.

2. A table according to claim 1, wherein the means for supporting the carrier balls consists of an endless belt, itself supported by appropriate support means, said first means consisting of the endless belt having an upper part in contact with the carrier balls as well as an arrangement for driving said belt in either direction along said first line, said second means being means for proving a relative motion at right angles to the motion of the belt between said belt and tray.

3. A table according to claim 2, wherein the means for generating rotary motion between the tray and belt consists of means for shifting the tray on the belt which moves on rollers each rotating on a fixed axle, and means for guiding movement of the tray along a direction along said second line.

4. A table according to claim 1, wherein the aligning plates extend above lateral edges of the first means used for driving the carrier balls, said first means having support trays along each side so that when the tray with the carrier balls is shifted sideways the first means protruding edge is supported on one of said support trays.

5. A table according to claim 1, wherein the first means is a belt and said table includes means for removing dirt and particles from said belt.

6. A table with crosswise operating motor-driven carrier balls designed for orthogonally sorting of flat workpieces, said table comprising a horizontal tray with freely rotatable carrier balls arranged within said tray so as to protrude from both upper and lower surfaces of the tray, means arranged underneath the tray for supporting said carrier balls;

first means for imparting rotary motion in a first horizontal direction along a first line to the carrier balls being supported on said supporting means, said first means comprising a continuous belt being supported on support rollers and having means for driving the belt, second means for imparting to the carrier balls a second rotary motion in a second horizontal direction along a second line extending perpendicular to the first direction, said second means consisting of means of shifting the tray relative to the belt and including a fixed horizontal jack arranged between the upper and lower runs of the belt and linked to one edge of the tray, said belt having a width corresponding to the effective width of the movement for a batch on the table, said belt having an extension tray on each side with one of said extension trays adjacent the connection of the jack to the tray having a slot for receiving said connection, means for controlling and checking the application and amplitude of said first and second rotary motions so as to impart to the carrier balls at contact points of the balls with a workpiece a rotary motion resulting from a variable amplitude in any direction of the reference plane defined by said first and second lines, means for carrying the workpieces onto the balls of the tray for processing, and means for collecting the workpieces at an outlet of the tray after processing.

7. A table according to claim 6, which includes means for removing dirt and particles from said belt.

8. A table according to claim 6, which includes aligning plates being adjustably positioned above the tray to allow movement of the tray therebeneath.

9. A table according to claim 8, wherein the aligning plates extend above lateral edges of the belt used for driving the carrier balls.