Some factors affecting the working accuracy of fully automatic digital granulator/digital microcomputer

The fully automatic number of grains relies on photoelectric sensors for counting
.

On both sides of the counting channel are placed a pair of components of the photoelectric sensor, one end is the optical signal transmitter, the other end is the signal receiving end, receiving the beam
emitted by the former.

As the particles pass through the counting channel, the beam is obscured, and the photoelectric sensor thus generates an electrical pulse signal
.

When working, the particles are poured into the top hopper, and by properly adjusting the primary, intermediate and final vibration feeders, the stacked particles in the hopper gradually slide down the vibration groove plate into a continuous strip straight line to the blanking port
.

Then, the particle drop detection channel is adopted, and the working signal generated by the infrared dynamic scanning sensor when the particle falls is input to the FPGA high-speed microprocessor, and the counting function
is realized through the combination of circuits and programs.

The following is a brief discussion of several factors
that affect the accuracy of fully automatic counting machines.

First, human factors The operator did not preheat the machine before starting the machine
in accordance with the requirements of the operating procedures.

Or during the operation of the machine, the operator does not replenish the material in the silo in time, affecting the separation state of the material on the oscillating plate, which will lead to inaccurate
product counting.

For example, the design of the silo does not take into account the change of gravity, which will affect the fluidity and material sequencing of the materials in the oscillating plate; The difference between the memory baffle and the question of the falling grain shield is too large, the material falls for too long, and the material rotates in the falling grain shield and cannot fall into the packaging bottle in time, resulting in several grains being inaccurate; The automatic number of grain falling shields is made of plexiglass material, the material from the detection channel free fall in the shield in the high-speed rotation friction to produce static electricity, or some Chinese medicine components in the friction process will also produce static electricity, the material is adsorbed on the falling grain shield so that it falls into the bottle The effective number is reduced, which will also cause several particles to be inaccurate
.

In addition, when the adjustment machine is installed, the horizontal adjustment of the oscillation plate is tilted forward, so that the material naturally slides into the detection channel when the oscillation plate stops, which will also cause miscounting
.

Third, material factors The setting oscillation frequency of the three-stage oscillation plate for the production of capsules, tablets and pills is completely different
.

Or when producing tablets and capsules, due to the large amount of dust carried by the material, the accumulation of dust in the detection channel obscures the infrared rays, so that the counting circuit cannot work
normally.