Gate of a tablet discharge of a tablet press

Patent metadata

Field	Value
Publication number	US-11267215-B2
Application number	US-201916512488-A
Country	US
Kind code	B2
Filing date	Jul 16, 2019
Priority date	Jul 18, 2018
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

A tablet discharge gate for a tablet press comprises a tablet channel having an inlet and an outlet and comprising one of a tube shape and a trough shape, a first outlet channel, and a second outlet channel. A gate chamber is positioned between the outlet of the tablet channel and the first and second outlet channels. A drive apparatus is configured to move the tablet discharge gate between a first position in which tablets are supplied from the tablet channel to the gate chamber and into the first outlet channel of the gate, and a second position in which tablets are supplied to the tablet discharge gate chamber and into the second outlet channel.

First claim

The invention claimed is:

1. A tablet discharge gate for a tablet press comprising:
a tablet channel defining a running surface and having an inlet and an outlet and comprising a tube shape;
a first outlet channel;
a second outlet channel;
a gate chamber positioned between the outlet of the tablet channel and the first and second outlet channels, wherein the gate chamber defines a gap between the tablet channel outlet and the first and second outlet channel that inhibits tablet push back and clamping during a gate switching process;
a drive apparatus configured to move the tablet discharge gate between a first position in which tablets are supplied from the tablet channel to the gate chamber and into the first outlet channel of the gate, and a second position in which tablets are supplied from the tablet channel to the gate chamber and into the second outlet channel; and
a guiding apparatus comprising a guiding element positioned in the gate chamber and defining a running surface, wherein the guiding element is configured to guide tablets from the tablet channel to the first outlet channel or the second outlet channel, wherein a portion of the running surface of the guiding element is overlapped by a portion of the running surface of the tablet channel.

2. The tablet discharge gate according to claim 1 , wherein the tablet channel is configured to rotate about a rotary axis, and wherein the inlet of the tablet channel is positioned coaxial to the rotary axis and the outlet of the tablet channel is positioned non-coaxial to the rotary axis.

3. The tablet discharge gate according to claim 1 , wherein the guiding element is configured to prevent tablets from unintentionally moving between the first outlet channel and the second outlet channel.

4. The tablet discharge gate according to claim 3 , wherein the guiding element is stationary in the gate chamber.

5. The tablet discharge gate according to claim 3 , wherein the guiding apparatus comprises at least one guide body configured to be adjusted between an active position and a passive position within the gate chamber, and wherein a guide body drive is configured to adjust the guide body into the passive position during movement of the tablet channel between the first and the second position.

6. The tablet discharge gate according to claim 5 , wherein the active positioned is defined when the at least one guide body separates the first outlet channel from the second outlet channel.

7. The tablet discharge gate according to claim 1 , wherein at least one of the first outlet channel and the second outlet channel comprises one of a trough-shape and a tube-shape.

8. The tablet discharge gate according to claim 2 , wherein the tablet channel comprises a curved tube.

9. The tablet discharge gate according to claim 8 , wherein the outlet of the tablet channel is defined on a rotary disk configured to be rotatably driven by the drive apparatus.

10. The tablet discharge gate according to claim 9 , wherein the rotary disk is configured to block one side of the gate chamber.

11. The tablet discharge gate according to claim 1 , wherein the drive apparatus comprises one of an electric motor, a pneumatic drive, and an electromagnetic drive.

12. The tablet discharge gate according to claim 1 , further comprising a housing.

13. A rotary tablet press comprising:
a tablet discharge comprising at least one gate, the at least one gate comprising,
a tablet channel defining a running surface and having an inlet and an outlet, wherein the tablet channel comprises a tube shape,
a first outlet channel,
a second outlet channel,
a gate chamber positioned between the outlet of the tablet channel and the first and second outlet channels,
a drive apparatus configured to move the at least one gate between a first position in which tablets are supplied from the tablet channel to the gate chamber and into the first outlet channel of the gate, and a second position in which tablets are supplied from the tablet channel to the gate chamber and into the second outlet channel, and
a guiding element positioned in the gate chamber and defining a running surface, wherein the guiding element is configured to guide tablets from the tablet channel to the first outlet channel or the second outlet channel, wherein a portion of the running surface of the guiding element is overlapped by a portion of the running surface of the tablet channel.

14. The rotary tablet press according to claim 13 , wherein the tablet discharge comprises a gate arrangement comprising at least two gates arranged consecutively along a direction of tablet flow.

15. The rotary tablet press according to claim 14 , wherein the gate arrangement is positioned within a housing.

16. The rotary tablet press according to claim 13 , wherein the gate chamber defines a gap between the tablet channel outlet and the first and second outlet channel that inhibits tablet push back and clamping during a gate switching process.

Assignees

• Fette Compacting Gmbh

Inventors

• Kolbe Sven
• Mallon Stefan
• Meissner Friedrich
• Naeve Jan
• Luedemann Stefan

Classifications

• B30B15/32 Primary

  Discharging presses · CPC title

• B29C43/08

  with circular movement {, e.g. mounted on rolls, turntables} · CPC title

• B30B15/26

  Program-control arrangements · CPC title

• B07C5/362

  Separating or distributor mechanisms (switches for postal sorting B07C3/065; particular discharging devices for B65G47/74) · CPC title

• B30B15/30

  Feeding material to presses · CPC title