Patent ID: 11897178
Assignee: DAI NIPPON PRINTING CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A plastic bottle manufacturing device comprising:
a preform heating part that heats a preform and that includes a plurality of heating bodies disposed in a longitudinal direction of the preform;
a blow-molding part that molds a plastic bottle by blow-molding the preform heated by the preform heating part;
a preform temperature measuring part that is provided between the preform heating part and the blow-molding part and that measures temperatures of the preform at a plurality of measurement points in the longitudinal direction of the preform; and
a control unit that is connected to the preform temperature measuring part and that controls the preform heating part,
wherein positions of the plurality of measurement points are provided in correspondence with positions of the plurality of heating bodies,
wherein the control unit controls an output of each heating body of the preform heating part based on an optimal temperature distribution at each measurement point of the preform that has been predetermined and an actually measured temperature distribution at each measurement point of the preform measured by the preform temperature measuring part, and
wherein the control unit divides the preform into a plurality of zones in the longitudinal direction, wherein a number of the zones, a number of the measurement points and a number of the heating bodies are the same each other, and wherein the control unit sets each measurement point at a location at which a temperature is highest in the corresponding one of the zones.