Mechanical pay-off automatic switching mechanism

Abstract

According to the disclosed mechanical pay-off automatic switching mechanism, a center shaft is vertically arranged, the center shaft is sleeved with a shaft sleeve, and the shaft sleeve can rotate along the axis of the shaft sleeve; the middle part of the pay-off shaft is connected with the top end of the shaft sleeve through a bracket; the limiting disc is fixedly connected with the shaft sleeve, and two symmetrically arranged limiting holes or limiting notches are formed in the limiting disc; a pin barrel is vertically arranged below the limiting disc, a limiting pin is arranged in the pin barrel, a spring is arranged between the lower end of the limiting pin and the inner bottom face of the pin barrel, and the upper end of the limiting pin can be located in the limiting hole or the limiting notch under the action of the elastic force of the spring; a deflection through hole is formed in the side face of the pin cylinder, a trigger rod is fixedly connected to the side face of the limiting pin and penetrates through the deflection through hole, and a heavy hammer rod is hung above the trigger rod. The automatic switching mechanism is of a pure mechanical structure, automatic switching between the full-disc spool and the empty-disc spool can be achieved as well, production efficiency is improved, and the pure mechanical structure can further save energy consumption and reduce manufacturing cost of equipment.

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