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The production method of spring air hole sleeve for tire molds
2020/3/24
Multiple exhaust holes are usually installed on the molding mold of rubber tires to allow the raw materials to form smoothly in the mold.In existing technology,a stainless steel vent sleeve is usually placed in the exhaust hole,which is a simple cylinder.During the tire forming process,a small amount of rubber material will overflow from the vent sleeve,causing multiple columnar burrs on the surface of the formed tire product.When trimming the burrs,it is easy to damage the tire pattern and reduce the aesthetics of the tire surface.
The technical problem to be solved by this utility model is to provide a spring air hole sleeve for tire molds that can replace the traditional stainless steel air hole sleeve installed in the exhaust hole of the tire mold and avoid generating burrs on the surface of the tire.
The spring air hole sleeve for tire molds includes an outer shell body,and the outer diameter of the rear section of the outer shell body is smaller than that of the front section;The center of the jacket body is equipped with a through hole,in which a core shaft is inserted;The rear end of the core shaft is located outside the through-hole and is connected to a rear stopper with a diameter larger than the front section of the core shaft,which blocks the rear end of the core shaft from outside the rear end of the outer shell body;The front end of the core shaft extends beyond the outer shell and is connected to a front stopper,and there is a closed surface that cooperates with the opening of the outer shell front end and the front stopper;The middle section of the core shaft is equipped with a pressure spring,with the front end of the pressure spring pressed against the front stopper and the rear end of the pressure spring pressed against the step in the through-hole.The spring force moves the core shaft forward and opens the above closed surface.
The back section of the jacket has holes or grooves that run through both inside and outside.The outer surface of the rear section of the outer jacket is a conical surface.The closed surface between the front opening of the outer jacket and the front stopper is a conical surface.This utility model is used on tire molds to replace the original stainless steel vent sleeve.During the exhaust stage of tire molding,the gas inside the mold can be discharged normally,and when the rubber material fills the mold,it can prevent the rubber material from overflowing from the exhaust hole,thereby avoiding the formation of burrs on the surface of the tire and improving product quality.
The technical problem to be solved by this utility model is to provide a spring air hole sleeve for tire molds that can replace the traditional stainless steel air hole sleeve installed in the exhaust hole of the tire mold and avoid generating burrs on the surface of the tire.
The spring air hole sleeve for tire molds includes an outer shell body,and the outer diameter of the rear section of the outer shell body is smaller than that of the front section;The center of the jacket body is equipped with a through hole,in which a core shaft is inserted;The rear end of the core shaft is located outside the through-hole and is connected to a rear stopper with a diameter larger than the front section of the core shaft,which blocks the rear end of the core shaft from outside the rear end of the outer shell body;The front end of the core shaft extends beyond the outer shell and is connected to a front stopper,and there is a closed surface that cooperates with the opening of the outer shell front end and the front stopper;The middle section of the core shaft is equipped with a pressure spring,with the front end of the pressure spring pressed against the front stopper and the rear end of the pressure spring pressed against the step in the through-hole.The spring force moves the core shaft forward and opens the above closed surface.
The back section of the jacket has holes or grooves that run through both inside and outside.The outer surface of the rear section of the outer jacket is a conical surface.The closed surface between the front opening of the outer jacket and the front stopper is a conical surface.This utility model is used on tire molds to replace the original stainless steel vent sleeve.During the exhaust stage of tire molding,the gas inside the mold can be discharged normally,and when the rubber material fills the mold,it can prevent the rubber material from overflowing from the exhaust hole,thereby avoiding the formation of burrs on the surface of the tire and improving product quality.
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