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Rotary tablet press

a tablet press and rotary technology, applied in the direction of shaping presses, ceramic shaping apparatuses, manufacturing tools, etc., to achieve the effect of not exposing the user to dust leakag

Inactive Publication Date: 2008-02-07
COURTOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]An object of the present invention is to provide a rotary tablet press, whereby air intake to the compression chamber is enabled without the risk of dust leakage to the surroundings and without the above-mentioned disadvantages.
[0006]In view of this object, said compression chamber communicates with the surroundings of the tablet press through a non-return valve arranged to prevent outflow from the compression chamber to the surroundings of the tablet press. A non-return valve may allow air to enter the compression chamber and prevent dust from leaving the compression chamber; the valve may be of simple construction and does not need replacement on a regular basis.

Problems solved by technology

However, such filters have the disadvantage that they become clogged during use, and therefore they must be monitored and replaced when necessary.

Method used

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Examples

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Embodiment Construction

[0040]FIG. 1 shows a rotary tablet press 1 for compression of a feedstock in the form of powder or granular material into tablets, compacts or the like. The press shown is of a type suitable for use in the pharmaceutical industry, but the press according to the invention may as well be a so-called industrial press employed in the production of a variety of different products, such as vitamins, pet food, detergents, explosives, ceramics, batteries, balls, bearings, nuclear fuels, etc.

[0041]The rotary tablet press 1 has a press housing 2 comprising an internal frame 3, which supports various components located in the housing 2, and an outer lining 4, which is shown only at a lower section 5 of the press. The press housing 2 is composed of three sections, which are located on top of each other and are separated by means of partition walls. The lower section, designated the drive section 5, is separated from a central section, designated the compression section 6, by a lower partition w...

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PUM

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Abstract

A rotary tablet press comprises a housing and a rotary die table having dies arranged circumferentially. Each die is associated with a punch having an end receivable in the die and being arranged for compression of a powder or granular material in the die by reciprocation of the punch by rotation of the die table. The rotary tablet press comprises a feeding device and a tablet discharge device. Each die opening and its corresponding punch end are enclosed in a compression chamber comprising a dust extraction nozzle. The compression chamber communicates with the surroundings of the tablet press through a non-return valve arranged to prevent outflow from the compression chamber to the surroundings of the tablet press.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a rotary tablet press comprising a housing, a rotary die table having a number of dies arranged circumferentially, each die being associated with at least a first punch having a first end receivable in the die through an opening of the die and arranged for compression of a powder or granular material in the die by reciprocation of the punch, at least a cam for cooperation with a second end of the punches in order to effect axial displacement of the punches by rotation of the die table, a feeding device for the supply of material to be compressed into the dies, and a tablet discharge device for removal of compressed material in the form of tablets, wherein each die opening and its corresponding first punch end are enclosed in a compression chamber, said compression chamber comprising at least one dust extraction nozzle communicating with a dust extraction tube located outside the compression chamber.[0002]US 2004 / 02071...

Claims

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Application Information

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IPC IPC(8): B28B7/04
CPCB30B11/08B30B15/028B30B15/0082
Inventor WALDRON, MICHEL SIMON
Owner COURTOY
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