Analysis of the reasons affecting the counting accuracy of capsule counting machine

1 Human factors: ① the operator did not preheat the machine before starting the machine according to the requirements of the operating procedures; ② the operator did not supplement the materials in the bin in time during the operation of the machine, which directly affected the separation state of the materials on the oscillating plate, and Zui eventually led to inaccurate product count 2 Factors of the machine: ① the change of gravity is not considered in the bin design, which will affect the fluidity and material sequencing of the materials in the oscillating plate Because the more materials, the higher the center of gravity of materials will increase the fluidity of materials, resulting in the overlapping materials entering the detection channel before they can be separated, resulting in the inaccuracy of the number of particles With the decrease of the material's center of gravity, the fluidity of the material will be reduced, which may cause the speed of the number of particles to slow down ② the drop between the memory baffle and the falling shield is too large, the falling time of the material is too long, and the material rotates in the falling shield and cannot fall into the packaging bottle in time, resulting in the inaccurate number of particles (3) as the capsule pelletizer is made of plexiglass material, static electricity is generated by high-speed rotating friction when the material falls freely from the detection channel Another reason is that some components of traditional Chinese medicine are prone to generate static electricity in the process of friction Because of static electricity, the material is adsorbed on the falling shield, which reduces the effective number of particles falling into the bottle, resulting in inaccurate number of particles (4) when the memory baffle is not pushed out in place, it can not completely block the material When the memory baffle is opened, there is still material passing through the memory baffle, resulting in several incorrect particles (5) if the position of the dropping shield is not right, the bottle mouth cannot be blocked completely, so that the materials cannot all fall into the packaging bottle smoothly, resulting in the inaccurate number of particles (6) during the installation and adjustment of the machine, the horizontal adjustment and forward tilt of the oscillating plate make the material slide into the detection channel naturally when the oscillating plate stops vibrating, resulting in false counting 3 Material factors: ① the setting oscillation frequency of the three-stage oscillation plate for the production of capsules, tablets and pills is completely different (2) in the production of tablets and capsules, the infrared ray is blocked by the accumulation of dust in the detection channel due to the large amount of dust carried by the materials, so that the counting circuit can not work normally 4 Medium factor: ① the influence of environment factor on counting accuracy mainly comes from the quality of compressed air Compressed air with high water content has great influence on the sensitivity of actuator cylinder Once the sensitivity of cylinder decreases, the accuracy of counting cannot be guaranteed 5 Parameter setting factors of capsule granulator: ① the setting size of the bin gate has a great influence on the separation state of the material on the oscillating plate The gate is too large, the material flows out too fast, the material flows out too fast, there will be overlapping phenomenon When the overlapped material passes through the detection channel, it will affect the accuracy of the count It will also affect the speed of the count ② setting of the oscillation frequency of the third stage oscillating plate The set too fast material cannot be separated effectively, which has an effect on the counting accuracy too slow and affects the production speed ③ setting of product length and Zui small parameters The appearance of the product is directly related to the brightness time and blackout time of the infrared ray of the detection channel Light time is the time between particles The shorter the light time is, the higher the resolution is The light blocking time is determined by the appearance size of the product If the setting of light blocking time is too long, it will produce fewer counts Setting the shading time too short will make the counter indistinct and the elimination will affect the counting speed ④ the value setting of the predicted number is to make the machine continue to count the number of bottles after the completion of the number of particles dropping shield to increase the production capacity When a drug is detected after Zui, all the drug particles will fall into the detection track, the memory tablet will hold them, the empty bottle will arrive at the dropping shield, and the pre counted drug particles will fall into the bottle Too small parameter setting of the predicted number has an effect on the counting speed too large also has an effect on the accuracy of counting ⑤ setting of counting speed If the parameter is set too small, the product will get sufficient separation on the oscillating plate, which is beneficial to improve the accuracy of counting But it is not conducive to improving the production speed If the setting is too large, the separation of the product on the oscillating plate is not good, which has a serious impact on the accuracy of counting ⑥ setting of separation speed Separation speed refers to the separation speed between the last Zui product and the next * product Separation speed is too fast memory baffle will not be able to separate the products between the previous bottle and the next bottle, resulting in one more or less particles Separation speed is too slow and affects the production speed 6 Factors of sensitivity reduction of cylinder: as the executive component of capsule counting machine, reaction time directly affects the accuracy of counting The main reasons for the decrease of cylinder sensitivity are: the moisture content in the compressed air, the non cylinder special grease, the impurities entering into the cylinder, the seals of the cylinder, etc.