Analysis of the Causes Affecting the Accuracy of Electronic Capsule Counting Machine

Analysis of the Causes Affecting the Accuracy of Electronic Capsule Counting Machine

1. Human factors:

① The operator did not preheat the machine before starting according to the requirements of the operating procedures.

② the operator did not timely replenish the materials in the silo during the operation of the machine, which directly affected the separation state of the materials on the oscillating plate, resulting in inaccurate product counting.

2. Factors of electronic capsule counting machine:

(1) The design of the bin of the capsule counting machine does not take into account the influence of the change of gravity on the fluidity and sequencing of the materials in the oscillating plate. Because the more materials, the higher the center of gravity of the materials, the greater the fluidity of the materials, leading to overlapping materials entering the detection channel before they can be separated, resulting in inaccurate number of particles. As the material decreases, its center of gravity decreases, which will reduce the fluidity of the material and may slow down the speed of several particles.

(2) The drop between the baffle plate of the capsule counting machine and the blanking opening is too large, and the falling time of the material is too long. The material rotates in the blanking opening and cannot fall into the packaging bottle in time, resulting in inaccurate counting.

(3) Since the blanking port of the capsule counting machine is made of organic glass, when the material falls freely from the detection channel, it will rotate and rub at high speed in the shield to generate static electricity. Another reason is that some traditional Chinese medicine ingredients are particularly prone to generate static electricity during friction. Due to the static electricity, the material is adsorbed on the blanking port, reducing the effective number of particles falling into the bottle, resulting in inaccurate number of particles.

(4) If the baffle is not pushed out in place, it cannot completely block the materials. When the baffle is opened, there are still materials passing through the baffle, causing inaccurate number of particles.

(5) The position of the feed opening of the capsule counting machine is not correct, and the mouth of the bottle cannot be blocked completely, so that all the materials cannot fall into the packaging bottle smoothly, leading to inaccurate counting.

(6) During the installation and adjustment of the capsule counting machine, the horizontal adjustment of the oscillating plate inclines forward, so that when the oscillating plate stops vibrating, the material will naturally slide into the detection channel, causing false counting.

3. Material factors:

① The set oscillation frequency of the three-stage oscillating plate for producing capsules, tablets and pills is completely different.

② Due to the large amount of dust carried by materials during the production of tablets and capsules, the accumulation of dust in the detection channel blocks the infrared ray, making the counting circuit unable to work normally.