Molding die projection mechanism and molding die comprising same projection mechanism

A projection mechanism of a molding die configured to mold a molded article by a fixed-side die and a movable-side die, the projection mechanism comprising:

• a projection pin using a reaction force of a spring as a drive source;
• and
• a first spring and a second spring configured to project the projection pin,
• wherein
• the first spring has a maximum reaction force in a die clamping state, and projects the projection pin while gradually reducing the reaction force in a projection process, and
• the second spring projects the projection pin with a constant reaction force while projecting the projection pin from the die clamping state,
• where stop of movement of the projection pin during the projection process causes compression of the second spring to increase the reaction force of the second spring, thereby energizing the projection pin to further project the projection pin, wherein
• the projection pin has a lower flange at a bottom or a lower portion of the projection pin and an upper flange at an intermediate portion or an upper portion of the projection pin,
• the first spring is arranged below the lower flange such that the first spring at a compressed state is in contract with the lower flange, and
• the second spring is arranged below the upper spring such that the second spring at a compressed state is in contact with the upper flange,
• where a projection direction of the projection pin is defined as upper direction, and a direction opposite to the projection direction is defined as lower direction.