Centering equipment for use in a blow molding machine
AssigneeTahara Machinery Limited
InventorsMikio Uchiyama, Tatsuo Suzuki
Life of this patent
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Abstract
A method of controlling a blow molding machine from a completion of production of one product to a start of production of a next product comprises controlling a temperature of a resin within the blow molding machine, controlling an operation of devices from the completion of production of the one product to the start of production of the next product, controlling a sequent transport of some of the devices in predetermined positions, and controlling a change of the resin in accordance with a supply stop thereof and a data on the next product.
Claims1
An automatic centering equipment for use in a blow molding machine, comprising:
- a mold having an upper portion formed with a plurality of openings which are opposite to each other in the diametrical direction;
- a source of a fluid;
- passage means for providing said fluid to said plurality of openings of said upper portion of said mold;
- a sensor arranged in said passage means, said sensor serving to sense predetermined variables of said fluid provided from said plurality of openings;
- a blow pin having a centering member, said centering member facing said upper portion of said mold with a predetermined distance when said blow pin is inserted into said mold;
- a control unit connected to said sensor, said control unit serving to compare said predetermined variables with each other to obtain differences between every opposite two of said plurality of openings;
- and
- an actuator connected to said control unit, said actuator serving to moving said blow pin so that said differences are null.
Dependencies are inferred from the claim text.