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After we have decided to buy a punch feeder, we should go to some large-scale factories to buy the punch feeder. The main specifications should match the processing size of the workpiece. The feeder manufacturer information is for high-tech industries. Coming, computer closed-loop feedback control is adopted to ensure that the precision of the punch feeder is less than 2.5 to 3 times the maximum block size when conveying the screened material within ±0.02mm. The largest block can be taken when transported without screening Twice the degree. That is, small workpieces should be selected with small specifications of automatic feeders, while large workpieces should be selected with large specifications of automatic feeders, so that the equipment can be used reasonably.​