Control device of injection molding machine and injection molding machine
AssigneeSumitomo Heavy Industries, Ltd.
InventorsDaigo Hotta, Hajime Ono, Naoki Kitaguchi
Life of this patent
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Abstract
A control device controls an operation of an injection molding machine that advances and retracts an ejector rod of an ejector unit. The control device is configured to set a plurality of operation modes including a first operation mode and a second operation mode in which the injection molding machine is operated. The control device sets, at different positions from each other, a first retraction position where the ejection rod retracts to and waits in the first operation mode and a second retraction position where the ejection rod retracts to and waits in the second operation mode.
Claims18
A control device configured to control an operation of an injection molding machine, the control device comprising:
- processing circuitry configured to
- set a plurality of operation modes including a first operation mode and a second operation mode in which the injection molding machine is operated, the injection molding machine including a stationary platen, a movable platen, a mold unit, a mold clamping unit configured to open and close the mold unit, and an ejector unit attached to the movable platen, the ejector unit including an ejector rod configured to move in the movable platen and advance to eject a molding product from the mold unit, and
- set, at different positions from each other, a first retraction position to which the ejector rod retracts and at which the ejector rod waits in the first operation mode and a second retraction position to which the ejector rod retracts and at which the ejector rod waits in the second operation mode, the first retraction position and the second retraction position being closer to the stationary platen than a mechanical retraction limit position of the ejector rod,
- wherein a tip of the ejector rod at the first retraction position is prevented from protruding from a front end surface of the movable platen, the front end surface facing towards the stationary platen.
A control device configured to control an operation of an injection molding machine, the control device comprising:
- processing circuitry configured to
- set a plurality of operation modes including a first operation mode and a second operation mode in which the injection molding machine is operated, the injection molding machine including a stationary platen, a movable platen, a mold unit, a mold clamping unit configured to open and close the mold unit, and an ejector unit attached to the movable platen, the ejector unit including an ejector rod configured to move in the movable platen and advance to eject a molding product from the mold unit, and
- set, at different positions from each other, a first retraction position to which the ejector rod retracts and at which the ejector rod waits in the first operation mode and a second retraction position to which the ejector rod retracts and at which the ejector rod waits in the second operation mode, the first retraction position and the second retraction position being closer to the stationary platen than a mechanical retraction limit position of the ejector rod,
- wherein the processing circuitry is configured to, in the second operation mode, operate the mold clamping unit to close the mold unit after moving the ejector rod to the second retraction position during a single molding cycle of producing the molding product.
A control device configured to control an operation of an injection molding machine, the control device comprising:
- processing circuitry configured to
- set a plurality of operation modes including a first operation mode and a second operation mode in which the injection molding machine is operated, the injection molding machine including a stationary platen, a movable platen, a mold unit, a mold clamping unit configured to open and close the mold unit, and an ejector unit attached to the movable platen, the ejector unit including an ejector rod configured to move in the movable platen and advance to eject a molding product from the mold unit, and
- set, at different positions from each other, a first retraction position to which the ejector rod retracts and at which the ejector rod waits in the first operation mode and a second retraction position to which the ejector rod retracts and at which the ejector rod waits in the second operation mode, the first retraction position and the second retraction position being closer to the stationary platen than a mechanical retraction limit position of the ejector rod,
- wherein a tip of the ejector rod at the second retraction position is out of contact with a movable structure of the mold unit, the movable structure being configured to be pushed to eject the molding product from the mold unit, and
- the processing circuitry is configured to, in the second operation mode, control the ejector unit to advance the ejector rod from the second retraction position so that the tip of the ejector rod directly contacts and pushes the movable structure to eject the molding product from the mold unit.
Dependencies are inferred from the claim text.