Single slice waste removing device of high-speed ration type preforming machine and operating procedure thereof

Abstract

The invention relates to a single-chip waste-rejection device of high-speed rotary performing machine and the working method. The device comprises central control unit, chip-weight measuring mechanism for recording main pressure values of all dies of performing machine by the central control unit, yield disk combination set under the rotary table of performing machine and generating counterpoint signals corresponding with main pressure actions of all dies, and pneumatic waste-rejection system. The device also comprises advance disk combination set on main electromotor of performing machine and generating compensation pulse signal corresponding with angle speed of output shaft of main electromotor. The central control unit estimate if waste-rejection program runs according to all main pressure values. When the waste-rejection program runs the central control unit calculates the time point when die with waste chip runs to the nozzle position of pneumatic waste-rejection system as the performing machine runs by said compensation pulse signals and counterpoint points and touches pneumatic waste-rejection system off at the time point. Waste-rejection accurate ratio of device is high and adaptability is good.

Description

technical field [0001] The invention relates to a single-chip rejecting device of a high-speed rotary tablet press used in the pharmaceutical machinery industry and its working method, in particular to a pharmaceutical device for removing waste tablets during the tablet pressing process of the tablet press. Machinery and its working methods. Background technique [0002] The working principle of the high-speed rotary tablet press to press powdery and granular raw materials into tablets is that the main motor drives the turntable to rotate through the transmission mechanism (that is, the pulley and the worm gear pair). Under the cooperation of the upper and lower guide rails, the reciprocating motion of the upper and lower punches is controlled, and the cycle action is completed: filling material-quantitative-pre-pressing-main pressing-discharging. [0003] Regarding the high-speed rotary tablet press, see: a kind of rotary tablet press disclosed in Chinese patent document C...

AI Technical Summary

Problems solved by technology

[0007] 1. Low rejection rate

In the prior art, the single-chip rejection pulse signal with the number of dies as the input variable has low resolution, which limits its applicable maximum tablet production speed (the single-discharge model does not exceed 140,000 tablets per hour), and the single-chip The structure of the hole nozzle and the control of the single electromagnetic reversing valve will cause the movement state of the waste film to be unstable before entering the recycling channel, which cannot meet the higher requirements of single-chip rejection and continuous two-piece or multi-piece rejection, resulting in waste The probability of mixing in qualified products is high, which affects the quality of tablets; in addition, more qualified tablets are entrained into the waste tablet recycling channel by the rejecting action, which affects production costs and efficiency

[0008] 2. Poor adaptability

The existing single-chip reject system with the number of dies as the input variable cannot dynamically adjust the width of the single-chip reject pulse signal when the production speed changes, especially in the process of continuous speed regulation of the turntable. The pulse width between the two dies cannot be accurately calculated, resulting in a large error in the positioning of waste pieces, that is, the control parameters of single piece rejection cannot automatically adapt to changes in production speed, and must be recalibrated

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