Method and Device for Inserting Inserts (Cores) into Female Molds of a Rotary Tableting Press

• US 20090260212A1
• Filed: 04/16/2009
• Published: 10/22/2009
• Est. Priority Date: 04/18/2008
• Status: Active Grant

• Current Assignee: Korsch AG
• Original Assignee: Korsch AG
• Inventors: Mies, Stephan, Schmett, Michael, Korsch, Wolfgang, Zeddies, Helmut
• Granted Patent: US 9,114,585 B2
• Time in Patent Office: Days
• US Class Current: 29/428
• CPC Class Codes: B30B 11/08 co-operating with moulds carried by a turntable
• CPC Class Codes: B30B 11/34 for coating articles, e.g. tablets
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/53 Means to assemble or disassemble

Abstract

The invention relates to a method for inserting inserts (cores) into female molds of a rotary tableting press. The inserts are inserted individually into one female mold each of a rotating rotor of the rotary tableting press by separating the inserts from a nonspecific quantity by means of a feeder mechanism, feeding them to a core distributor and aligning them from there with the female molds in a precisely defined position and delivering the inserts to the female molds in this position.

Claims

1. A method for inserting inserts into female molds of a rotary tableting press, whereby the inserts are inserted individually into one female mold each of a rotating rotor of the rotary tableting press, the method comprising:

separating the cores by means of a feeder mechanism from a nonspecific quantity,

feeding them to a core distributor and directing them from there into the female molds in a precisely definable position and

depositing the inserts in the female molds in this position.

2. A device for inserting inserts into female molds in a rotary tableting press, having a feeder mechanism by means of which the single-fed inserts are brought into alignment with a female mold of the rotary tableting press, wherein the feeder mechanism comprises a core distributor;

the core distributor has a drivable rotor comprising over its circumference at least one core receptacle; and

a path of movement of the core distributor of at least one core receptacle and a path of movement of the female molds of the rotary tableting press intersect in a partial circle, whereby the at least one core receptacle comprises restraining means which allow holding of the inserts, conveyance of the inserts and delivery of the inserts.

3. The device according to claim 2, wherein the core receptacle comprises gripper elements for receiving the inserts, for centering the inserts, for conveying the inserts and for ejecting the inserts.

4. The device according to claim 2, wherein the gripper elements are pneumatically controllable.

5. The device according to claim 2, wherein the core distributor comprises a pneumatic connection, which is operatively connected to valves controlling the gripper elements.

6. The device according to claim 2, wherein the valves can be controlled by a stationary control cam of the core distributor.

7. The device according to claim 2, wherein four valves are assigned to each gripper element for opening or closing gripper tongs and for receiving and ejecting the inserts.

8. The device according to claim 2, wherein the rotor of the core distributor can be driven by a controllable drive.

9. The device according to claim 8, wherein the rotor is drivable by a stepping motor.

10. The device according to claim 2, wherein the feeder mechanism comprises a core feeder mechanism which together with the core separator and the core distributor forms a feeder chain for the inserts.

11. The device according to claim 2, wherein the core feeder mechanism comprises a rotary conveyor which supplies the inserts individually to the core distributor in a defined manner.

12. The device according to claim 11, wherein the conveyor has positioning pockets for self-positioning of the single-fed inserts.