Method for molding and forming flip-flop and mold thereof

Abstract

A main technical feature of a method for molding and forming a flip-flop and a mold thereof provided by the invention is that when a polymer raw material is filled into a mold chamber space of the mold, the filled raw material is preferentially flowed in a direction of a strap area space used to mold a V-shaped strap portion of the flip-flop to ensure that the slender V-shaped strap portion of the flip-flop can be integrally formed.

What is claimed is: 
     
         1 . A mold for molding and forming a flip-flop comprising:
 a first mold plate and a second mold plate capable of displacing relative to each other between a mold clamping position when attaching and connecting with each other and a mold opening position when separating from each other under an action of an external force;   a mold chamber being a closed space defined between the first mold plate and the second mold plate when the first mold plate and the second mold plate locating in the mold clamping position, the mold chamber having a spatial shape the same as that of the flip-flop and being divided into a sole area corresponding to a shape of a sole of the flip-flop, a strap area corresponding to a shape of an elongated V-shaped strap of the flip-flop, and three hole-shaped connecting areas communicating with the sole area and the strap area respectively and corresponding to positions of three end points of the V-shape; and   three hole-shaped material filling channels respectively provided on the first mold plate and communicating with the mold chamber for an external raw material to enter the mold chamber through each of the material filling channels, and an outlet orifice of each of the material filling channels located on a chamber wall of the mold chamber being respectively facing toward each of the connecting areas.   
     
     
         2 . The mold for molding and forming the flip-flop as claimed in  claim 1 , wherein the strap area of the mold chamber is located on the second mold plate, and the material filling channels are located on the first mold plate. 
     
     
         3 . The mold for molding and forming the flip-flop as claimed in  claim 1 , wherein a virtual outlet area extending along a hole axis of each of the outlet orifices in a direction of the mold chamber respectively forms a virtual intersection with a virtual connecting area extending along a hole axis of each of the corresponding connecting areas in a direction of the mold chamber within a boundary of the mold chamber. 
     
     
         4 . The mold for molding and forming the flip-flop as claimed in  claim 3 , wherein a virtual extension line of a hole axis of each of the outlet orifices passes through each of the corresponding connecting areas respectively. 
     
     
         5 . The mold for molding and forming the flip-flop as claimed in  claim 1 , further comprising at least one gas channel capable of being controlled to open and close provided on the first mold plate and/or the second mold plate to communicate the mold chamber with outside.