Filling unit for a rotary press and a method for providing an optimized rotary press

Patent metadata

Field	Value
Publication number	US-12420511-B2
Application number	US-202118249650-A
Country	US
Kind code	B2
Filing date	Oct 6, 2021
Priority date	Oct 23, 2020
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A filling unit (10) for a rotary press (12) includes a filling wheel (14), a metering wheel (24), a feeding wheel (30) and a medium unit (36). The filling unit (10) is designed in such a way that the feeding wheel (30) can be connected to and disconnected from a delivery path of the medium to be metered, in particular by having a pivoting device (33) perform a pivoting movement, in particular about an axis of rotation (42) of the metering wheel (24), which is in the form of an impeller (20, 26, 32).

First claim

What is claimed is:

1. A filling unit ( 10 ) for a rotary press ( 12 ), the filling unit ( 10 ) comprising:
a filling wheel ( 14 ) configured to fill a medium to be metered into die holes ( 16 ) of a die plate ( 18 ) of the rotary press ( 12 );

wherein the filling wheel ( 14 ) is configured as an impeller ( 20 ) and is configured to deliver the medium to be metered via a rotating movement by its vanes ( 22 );
a metering wheel ( 24 ) configured to meter a quantity of medium to be metered into the respective die holes ( 16 ) of the die plate ( 18 ), wherein the metering wheel ( 24 ) is configured as an impeller ( 26 ) and is configured to meter the quantity of the medium to be metered and to remove excess medium by scraping over the die holes ( 16 ) of the die plate ( 18 ) with its vanes ( 28 ) via a rotating movement;
a feeding wheel ( 30 ) configured to feed the medium to be metered to the filling wheel ( 14 ),
wherein the feeding wheel ( 30 ) is configured as an impeller ( 32 ) and is configured to deliver the medium to be supplied to the filling wheel ( 14 ) via a rotating movement by its vanes ( 34 );
at least one medium supply unit ( 36 ) which is designed to supply the medium to the filling wheel ( 14 ) and/or the feeding wheel ( 30 ),
wherein the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) each have a delivery surface ( 40 ) with which each of the impellers ( 20 , 26 , 32 ) delivers the medium,
wherein the filling unit ( 10 ) is configured in such a manner that the feeding wheel ( 30 ) is configured to connect and disconnect from a delivery path of the medium to be metered by movement created by a device.

2. The filling unit ( 10 ) according to claim 1 , wherein the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) are configured such that a delivery surface ( 40 ) of the respective vanes ( 22 , 28 , 34 ) can be varied in shape.

3. The filling unit ( 10 ) according to claim 2 , wherein the shape of the delivery surface ( 40 ) can be modified by a rotation of the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) about respective axes of extension ( 38 ),
or by a variable inclination of the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) with respect to a radial direction ( 45 ) extending from an axis of rotation ( 42 ) of the respective impellers ( 20 , 26 , 32 ),
or by a variable curvature of the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ).

4. The filling unit ( 10 ) according to claim 1 , wherein the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) are configured to be displaceable parallel to an axis of rotation ( 42 ) of the given impeller ( 20 , 26 , 32 ).

5. The filling unit ( 10 ) according to claim 1 , wherein the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) have a triangular, rectangular, or at least partially rounded cross section.

6. The filling unit ( 10 ) according to claim 1 , wherein the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) have a consistent cross section along at least one region of their respective axes of extension ( 38 ).

7. The filling unit ( 10 ) according to claim 1 , wherein the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) are configured to be exchangeable.

8. The filling unit ( 10 ) according to claim 1 , wherein the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) each has/have vanes ( 22 , 28 , 34 ) with a different cross section along their respective axes of extension ( 38 ).

9. The filling unit ( 10 ) according to claim 1 , wherein the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) are arranged such that an extension of respective axes of extension ( 38 ) runs at a distance from an axis of rotation ( 42 ) of the given impeller ( 20 , 26 , 32 ).

10. The filling unit ( 10 ) according to claim 1 , wherein the filling unit ( 10 ) is designed such that a direction of rotation and/or a rotational speed of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) can be varied.

11. The filling unit ( 10 ) according to claim 1 , wherein the filling unit ( 10 ) has at least one electric motor ( 50 ), and the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) is/are driven directly or via at least one gearwheel ( 48 ) by the electric motor ( 50 ), and/or a rotational position of the vanes ( 22 , 28 , 34 ) and/or an inclination of the vanes ( 22 , 28 , 34 ) is varied directly or via at least one gearwheel ( 46 ) by the electric motor ( 50 ), with respect to a radial direction ( 45 ) extending from an axis of rotation ( 42 ) of the respective impeller ( 20 , 26 , 32 ).

12. The filling unit ( 10 ) according to claim 1 , wherein the device for moving the feeding wheel ( 30 ) is a pivoting device ( 33 ) for creating a pivoting movement.

13. The filling unit ( 10 ) according to claim 12 , wherein the pivoting movement is about an axis of rotation ( 42 ) of the metering wheel ( 24 ).

14. The filling unit ( 10 ) according to claim 6 , wherein the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) have a consistent cross section along their entire respective axes of extension ( 38 ).

15. The filling unit ( 10 ) according to claim 11 , wherein the at least one electric motor ( 50 ) is a servomotor ( 52 ).

16. The filling unit ( 10 ) according to claim 7 , wherein the vanes ( 22 , 28 , 34 ) of the filling wheel ( 14 ), the metering wheel ( 24 ) and/or the feeding wheel ( 30 ) are configured to be exchangeable elements between the individual impellers ( 20 , 26 , 32 ).

17. A method for providing an optimized rotary press, comprising the steps of:
providing a first rotary press ( 12 ) having an adjustable filling unit ( 10 ), the adjustable filling unit ( 10 ) having at least one element with at least one adjustable configuration parameter;
producing a plurality of tablets with the first rotary press ( 12 ) with different settings of the configuration parameter;
analyzing the produced tablets for desired properties to identify a tablet with preferred properties among the produced tablets;
identifying a setting of the configuration parameter in which the tablet with preferred properties was produced;
providing at least one second rotary press having an optimized filling unit, wherein the optimized filling unit has at least one element with a fixed, prespecified configuration parameter with which the tablet with preferred properties was produced,
wherein the adjustable filling unit comprises:
a filling wheel ( 14 ) configured to fill a medium to be metered into die holes ( 16 ) of a die plate ( 18 ) of the rotary press ( 12 ); wherein the filling wheel ( 14 ) is configured as an impeller ( 20 ) and is configured to deliver the medium to be metered via a rotating movement by its vanes ( 22 );
a metering wheel ( 24 ) configured to meter a quantity of medium to be metered into the respective die holes ( 16 ) of the die plate ( 18 ), wherein th

Assignees

• Syntegon Tech Gmbh

Inventors

• Brinz Thomas
• Werner Fabian
• Grass Torsten
• Mössinger Matthias

Classifications

• B29C43/34

  Feeding the material to the mould or the compression means {(B29C43/085 takes precedence)} · CPC title

• B30B11/08 Primary

  co-operating with moulds carried by a turntable · CPC title

• B30B15/0023

  Drive arrangements for movable carriers, e.g. turntables · CPC title

• B30B15/308

  in a continuous manner, e.g. for roller presses, screw extrusion presses · CPC title

• B30B15/304 Primary

  by using feed frames or shoes with relative movement with regard to the mould or moulds · CPC title