Auger roll device for air removal of rubber sheet

摘要

The present invention relates to an improvement of a pricking roll apparatus used when pricking to discharge air in a ply manufactured in a rolling process of a tire to the outside. A groove 7a is formed on the main surface of the awl roll body 7 to insert a spring 10 into the groove 7a, and the groove is formed on the main surface of the awl roll body 7. The lower flange 8a of the awl is latched at a position corresponding to the position 7a so as to extrapolate a pipe-type bushing 15 in which the upper part of the awl 8 slides.