Boots – shoes – and leggings
Patent
1986-12-30
1988-09-27
Smith, Jerry
Boots, shoes, and leggings
364181, 364188, 318591, B29C 4576
Patent
active
047746742
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a manual operation system for a machine controlled by a numerical control apparatus, wherein manual operations can be performed according to the same operation pattern as in automatic operation.
BACKGROUND ART
In a conventional machine controlled by a numerical control apparatus, manual feed in the manual feed mode, i.e., jog feed allows feeding of a machine at a constant speed while a manual feed switch is kept on. For this reason, the operation in the manual feed mode differs from that in the automatic operation mode. Even if the same operation pattern as in automatic operation is required in manual operation, such a requirement cannot be satisfied.
In conventional injection molding machines, especially, in a conventional hydraulic injection molding machine, an actuator such as a hydraulic valve is operated in an identical pattern in both the manual and automatic operation modes. Under this assumption, demand has arisen for causing the injection molding machine controlled by a numerical control apparatus to perform the same operations in both automatic and manual operation modes.
DISCLOSURE OF INVENTION
It is an object of the present invention to provide a manual operation system for a machine controlled by a numerical control apparatus, wherein the same operation pattern as in the automatic operation mode can be performed in the manual operation mode.
In order to achieve the above object of the present invention, there is provided a numerically controlled machine, comprising selection switch means, switch discriminating means for discriminating an actuation state of the selection switch means, and memory means for storing a manual operation program including a predetermined portion of an automatic operation program, wherein the machine can perform the same operation as in the automatic operation mode from a current position according to the manual operation program as long as a manual instruction from the selection switch means is kept enabled.
According to the present invention, since the manual operation program including the predetermined portion of the automatic operation mode is executed upon actuation of the selection switch means, the numerically controlled injection molding machine can be operated manually by the same operation pattern as in the automatic operation mode.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a view showing the main part of an injection molding machine to which an embodiment of the present invention is applied; and FIG. 2 is a graph showing a mold opening operation pattern according to this embodiment.
BEST MODE OF CARRYING OUT THE INVENTION
FIG. 1 shows the construction of the main part of an injection molding machine to which an embodiment of the present invention is applied. A computer built-in numerical controller (to be referred to as a CNC controller) 1 is connected to an operation panel with a display (to be referred to as an MDI/CRT) 2, a main operation panel 3 arranged on the housing of the injection molding machine, and each axis servo circuit 4 for controlling and driving a corresponding one of servo motors for mold clamping, die height adjustment, ejector, injection, metering, and nozzle touch. The main control panel 3 includes a power switch 31, operation mode selection switches 32a to 32c for respectively setting the automatic, semi-automatic, and manual operations, manual operation object selection switches 33a to 33g for selecting mechanisms such as clamp (i.e., a mold clamping mechanism) of the injection molding machine which are set in the manual operation mode, and direction selection switches 34a and 34b for selecting a movement direction of the selected mechanism.
The CNC controller 1 includes an NC central processing unit (to be referred to as an NCCPU) 5 and a programmable controller central processing unit (to be referred to as a PCCPU) 6. The NCCPU 5 and the PCCPU 6 are connected to each other through an interface 7. The NCCPU 5 is connected to a ROM 8 for storing control programs for control
REFERENCES:
patent: 4521845 (1985-06-01), Schwefel
patent: 4674053 (1987-06-01), Bonnai et al.
Fanuc Ltd
MacDonald Allen
Smith Jerry
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