The utility model relates to the technical fields of injection mold, especially to a mold structure of in-mold forming anti-pressing base material, including front mould
assembly and back mould
assembly, back mould
assembly is equipped with line position mechanism, inner lining mould core, back mould fixed plate, back mould movable plate and pre -
topping spring, inner lining mould core is fixedly connected in back mould fixed plate, and inner lining mould core is equipped with base material, line position mechanism is equipped with line position cylinder and line position sliding block, and line position sliding block slidingly connects in back mould movable plate, and is transmission connection in
piston rod end of line position cylinder, and one end of pre -
topping spring is connected in back mould movable plate and is contacted, thereby making the elastic force of pre -
topping spring drive back mould movable plate and back mould fixed plate and form certain gap between, above all, can realize the protection to base material, and the yield is greatly promoted, and the movement of accurate restriction part is guaranteed, and the stable operation is guaranteed, and the ejection reset process is optimized, and the production efficiency is improved, and the precision of double -guide promotion sliding block is guaranteed, and the product quality is guaranteed, and the comprehensive benefit is remarkable.