Mechanism for pressing materials into tablets

Abstract

The invention discloses a mechanism for pressing materials into tablets. The mechanism comprises a positioning shaft, an upper positioning plate, a middle positioning plate, a lower positioning plate, upper pressing rods and lower pressing rods. The upper positioning plate, the middle positioning plate and the lower positioning plate are sequentially arranged on the positioning shaft in a sleeving mode from top to bottom. Die holes are formed in the middle positioning plate, upper through holes are formed in the upper positioning plate, and the upper pressing rods penetrate through the upper through holes. Lower through holes are formed in the lower positioning plate, and the lower pressing rods penetrate through the lower through holes and are embedded into the die holes. The positions of openings of the lower ends of the upper through holes and the positions of openings of the upper ends of the lower through holes are all connected with annular dustproof sleeves. The upper pressing rods and the lower pressing rods all penetrate through the dustproof sleeves. The lower ends of the upper pressing rods and the upper ends of the lower pressing rods are all provided with limiting rings, and the diameters of outer rings of the limiting rings of the upper pressing rods are greater than the hole diameters of the upper through holes, and the diameters of outer rings of the limiting rings of the lower pressing rods are greater than the hole diameters of the lower through holes. When the mechanism is used, dust can be prevented from entering gaps between the positioning plates and the pressing rods, which influences normal motion of the pressing rods. Accordingly, the tabletting efficiency of the materials can be ensured.

Description

technical field [0001] The invention relates to a medicinal material processing technology, in particular to a mechanism for punching materials into tablets. Background technique [0002] At present, the production and application of tablet drugs have been rapidly developed, and have become one of the most widely used drug dosage forms in clinical practice, occupying an important position in the preparation production of countries all over the world. In the processing and production of tablets, it is necessary to compress dry granulated or powdered materials into tablets. Nowadays, the mechanism for stamping materials into tablets generally includes an upper positioning plate, a lower positioning plate, an upper stamping rod passing through the upper positioning plate, and a lower punching rod passing through the lower positioning plate. When the existing stamping mechanism is used, the upper positioning The gap between the disc and the upper punch rod, and the gap between ...

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