Double-layer tablet press and method for preparing double-layer tablets by adopting double-layer tablet press

Abstract

The invention belongs to the technical field of double-layer tablet pressing in the pharmaceutical machinery industry and particularly relates to a double-layer tablet press. The double-layer tablet press comprises a first layer metering component, a first layer prepressing component and a second layer metering component, wherein the first layer prepressing component comprises a prepressing cylinder, an upper prepressing wheel and a lower prepressing wheel; a piston rod of the prepressing cylinder faces downward and is connected with an adjusting base below the piston rod; the lower prepressing wheel is arranged on a cylinder body of the prepressing cylinder; the second layer metering component comprises a metering track and a metering cylinder; the end part of a piston rod of the meteringcylinder is connected with the metering track; the end close to the lower prepressing wheel, of the metering track is provided with an inclined guiding table; and the cylinder body of the prepressingcylinder in the first layer metering component is connected with a cylinder body of the metering cylinder in the second layer metering component to form a whole body. The invention further provides amethod for preparing double-layer tablets by adopting the double-layer tablet press. By use of the method disclosed by the invention, synchronous adjustment of first layer prepressing and second layer metering in the preparation process of the double-layer tablets can be realized, the adjusting difficulty is reduced, the production efficiency and the finished product rate are improved, and the operating safety of equipment is also improved.

Description

technical field [0001] The invention relates to a double-layer tablet pressing machine and a method for preparing a double-layer tablet by using the double-layer tablet pressing machine, and belongs to the technical field of double-layer tablet pressing in the pharmaceutical machinery industry. Background technique [0002] The main work of the double-layer tablet press includes the first layer of powder filling, metering, pre-pressing and the second layer of powder filling, metering, main pressing, tableting and other processes. During the working process, the upper punch, lower punch, The middle die plate will move synchronously with the turntable, at the same time, the upper punch runs up and down along the upper track and the upper pressure wheel, and the lower punch runs up and down along the lower track and the lower pressure wheel. The specific steps of using a traditional double-layer tablet press to perform double-layer tablet compression are as follows: [0003] T...

AI Technical Summary

Problems solved by technology

The entire operation process is cumbersome, which greatly affects the production efficiency of the double-layer film. At the same time, some waste films will naturally appear during the adjustment and operation process, which affects the yield

[0007] In addition to the above, since the first layer of preloading and the second layer of metering are adjusted separately, especially when the position of the lower preloading wheel moves down or the metering track in the second layer of metering assembly moves up, it is easy to cause the undershoot and the second layer of metering The collision of the metering track in the component will cause damage to the equipment and pose a great safety hazard

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