Method and apparatus for manufacturing metal plate chip resistors

摘要

The object of the invention is to provide a method and an apparatus that allow production of metal plate chip resistors having a relatively low resistance with high accuracy and yield through simple process. The object is achieved by apparatus for manufacturing metal plate chip resistors including cutting mold for cutting intermediate product strip transversely to obtain worked product chip, ohm meter for measuring the resistance of the worked product chip, control device having a calculating part for performing a calculation using the resistance measured by the ohm meter to work out a width in which the strip is to be cut transversely so as to obtain a worked product chip of a desired resistance, and cutting width adjustor for making an adjustment so that the strip is to be cut transversely in the width obtained from the calculating part.

主权项

1. An apparatus for manufacturing metal plate chip resistors from an intermediate product strip, said intermediate product strip having a resistive metal plate strip provided with a protective film on each of a front and rear surfaces longitudinally along a center thereof and an electrode film along each longitudinal edge of said resistive metal plate strip, said apparatus comprising:
cutting means for cutting said intermediate product strip transversely twice in a width to obtain first and second resistive metal plate chips, measuring means for measuring a resistance of each of said first and second resistive metal plate chips and working out an average, calculating means for performing a calculation using said average to work out a cutting width of said intermediate product strip to be cut transversely in a subsequent cutting step so that resulting third and fourth resistive metal plate chips will have a desired resistance, and cutting width adjusting means for making an adjustment so that said intermediate product strip is to be cut transversely in said subsequent cutting step in said cutting width determined by said calculating means.