Calibrating unit for a blow molding machine
Calibrating unit for a blow molding machine
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.
BACKGROUND OF THE INVENTION
The present invention relates generally to a blow moulding machine and particularly to an automatic operation control of the blow molding machine from a completion of production of one product to a start of production of a next product.
The injection molding machine is a machine which serves to make resin hollow moldings in accordance with the shape of a cavity formed in a mold held by a mold clamping unit. Upon molding operation, parisons as supplied from an extruder are received in the mold, and subjected to air blown out of a calibrating unit.
An installation of a plurality of blow molding machines to correspond to different types of resin hollow moldings is uneconomical, so that a single blow molding machine is generally used wherein different types of resin hollow moldings are formed by changing the molds and the molding jigs.
Conventionally, an exchange of the molds and the molding jigs are carried out manually, and not automatically. This does not allow a continuous operation of the blow molding machine.
SUMMARY OF THE INVENTION
According to one aspect of the present invention, there is provided a method of controlling a blow molding machine from a completion of production of one product of a resin to a start of production of a next product, the blow molding machine including a plurality of devices, the method comprising the steps of:
controlling a temperature of the resin within the blow molding machine;
controlling an operation of the plurality of devices from the completion of production of the one product of the resin to the start of production of the next product;
controlling a sequent transport of some of the plurality of devices in predetermined positions; and
controlling a change of the resin in accordance with a supply stop of the resin and data on the next product.
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Tags: blow molding machine, blow molding machines, blow moulding machine, injection molding machine