Injection molding method and mold mechanism

An injection mold mechanism comprising:

• a male mold including a base plate, and an embedding portion disposed on said base plate and formed with an embedding groove;
• a pushing system including a push rod that is actuatable to move through said male mold along a pushing direction;
• and
• a male mold core disposed in said embedding groove and including
• a forming member having a first mold cavity, and
• a positioning module including a plurality of positioning pin units each of which has a slide member, at least one positioning pin fixed on said slide member, and a drive member to drive movement of said slide member;
• wherein, prior to actuation of said push rod, said slide members of said positioning pin units are spaced apart from each other and said positioning pins of said positioning pin units extend into said first mold cavity;
• and
• wherein, when said push rod is actuated, said push rod pushes said drive members of said positioning pin units to respectively engage said slide members and drive said slide members to move toward each other to thereby retract said positioning pins from said first mold cavity.

An injection mold mechanism comprising:

• a male mold core including
• a forming member having a first mold cavity, and
• a positioning module including a plurality of inner positioning pin units each of which has an inner slide member, at least one inner positioning pin fixed on said inner slide member, and an inner drive member to drive movement of said inner slide member;
• a male mold including abase plate, and an embedding portion disposed on said base plate, and a plurality of outer positioning pin units, said embedding portion being formed with an embedding groove in a surface that is opposite to an interface between said embedding portion and said base plate for receiving said male mold core, each of said outer positioning pin units having an outer slide member with a through hole, an outer positioning pin fixed on said outer slide member, and an outer drive member to drive movement of said outer slide member, said outer drive member having an outer abutment portion and an inclined insert portion that is inclined with respect to said outer abutment portion and that is movable into said through hole in said outer slide member;
• and
• a pushing system including an inner push rod that is actuatable to move through said male mold along a pushing direction, a first push plate connected to said push rod, a plurality of springs that are disposed on said first push plate and that extend toward said male mold core, a second push plate that is connected to said springs opposite to said first push plate and that is parallel to said first push plate, and a plurality of outer push rods that are connected to said second push plate and that extend through said male mold, said inner push rod abutting against said inner drive member, each of said outer push rods abutting against said outer drive member of a respective one of said outer positioning pin units;
• wherein, prior to actuation of said inner and outer push rods, said inner slide members of said inner positioning pin units are spaced apart from each other, said outer slide members of said outer positioning pin units are also spaced apart from each other, and said inner positioning pins of said inner positioning pin units and said outer positioning pins of said outer positioning pin units extend into said first mold cavity;
• wherein, when said inner push rods are actuated, said inner push rod pushes said inner drive members of said inner positioning pin units to respectively engage said inner slide members and drive said inner slide members to move toward each other to thereby retract said inner positioning pins from said first mold cavity;
• and
• wherein, when said outer push rods are actuated, said outer push rod pushes said outer drive members of said outer positioning pin units to respectively engage said outer slide members and drive said outer slide members to move toward each other to thereby retract said outer positioning pins from said first mold cavity.