Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Means responsive to abnormal condition completely stop...
Patent
1988-05-02
1989-05-02
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Means responsive to abnormal condition completely stop...
425143, 425144, 425170, B29C 4578
Patent
active
048264180
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a purely electronic type injection molding machine equipped with a numerical control system having incorporated therein a computer.
2. Description of the Related Art
In an injection molding machine of the hydraulic type, an electromagnetic valve or the like is controlled by commands from a control system to drive an actuator, thereby working the injection molding machine. This type, however, does not store operating conditions of the injection molding machine. Information on a state as to whether or not the injection molding machine is capable of being operated, is not also stored in the injection molding machine per se. On the other hand, in an injection molding machine of a purely electronic type which is controlled by a numerical control system having incorporated therein a computer and which is driven by a servomotor, a memory device has stored therein all of the various kinds of setting values and operating conditions of the injection molding machine. The operating conditions include an operating condition when malfunction occurs during operation of the machine so that an alarm is issued and the operation of the machine is interrupted, and other operating conditions.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an injection molding machine in which when a start-up command is received, the injection molding machine per se judges whether or not the machine is capable of being operated, and can start and stop in operation.
In order to achieve the above-mentioned object, in an injection molding machine of a purely electronic type comprising a numerical control system having incorporated therein a computer, the invention comprises: means for transmitting and receiving an external remote signal; pre-processing control means for controlling a pre-processing operation for working of the injection molding machine when an injection molding machine working command is inputted from the transmitting and receiving means; detecting means for detecting abnormalities of the injection molding machine; abnormal location storing means for storing abnormal locations detected by the detecting means; abnormality judging means for judging, after completion of the pre-processing operation, whether or not the abnormalities are restorable, on the basis of the abnormal locations stored in the abnormal location storing means; restoring means for restoring restorable ones of the abnormalities judged by the abnormality judging means; means for automatically controlling an operation of the injection molding machine when the abnormal locations are eliminated; and post-processing means for executing a termination processing of the operation of the injection molding machine as a stop signal is inputted into the transmitting and receiving means, and then halting the operation of the injection molding machine.
As described above, in the injection molding machine of a purely electronic type which is controlled by the numerical control system having incorporated therein the computer, the arrangement of the invention is such that, by utilizing the fact that the injection molding machine is controlled in a purely electronic fashion, as the start-up signal is received from a remote location, the injection molding machine automatically executes the pre-processing and, subsequently, starts in operation, and as the stop signal is received, the injection molding machine automatically executes the post-processing and, subsequently, stops in operation. With such an arrangement, it is made possible to start and stop operation of the injection molding machine from the remote location, and a plurality of injection molding machines can be controlled from the remote location.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram showing a principal portion of an embodiment of the present invention; and
FIG. 2 is an operation processing flow chart for the embodiment of FIG. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In F
Fanuc Ltd
Heitbrink Timothy W.
Woo Jay H.
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