Plastic article or earthenware shaping or treating: apparatus – With indicator – signal – recorder – illuminator – or inspection...
Patent
1993-01-08
1994-09-06
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
With indicator, signal, recorder, illuminator, or inspection...
264 401, 425170, 425171, B29C 4576
Patent
active
053443012
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an operating time analyzing apparatus for measuring and totalizing elapsed times associated with specific operating conditions of an injection molding machine.
2. Description of the Related Art
In order to carry out periodical inspection, production management, etc. for injection molding machines in a rationalized manner, it is necessary to periodically analyze the times during which the injection molding machines are operated in various operating conditions.
In the case of a conventional injection molding machine, its operator manipulates a timer, stopwatch, or the like depending on the operating condition of the machine for manually measuring the automatic or manual operation time, time loss attributable to the generation of alarms, etc., and recording or writing down the obtained information in a daily work report or the like. Sometimes, however, the operator may erroneously operate the timer, stopwatch, or the like, so that it has been difficult to obtain accurate results of measurement at all times.
Moreover, in an ordinary injection molding operation, one operator is generally assigned to control about ten injection molding machines. Under such circumstances, however, it is not easy for the operator to operate the timer, stopwatch, etc., and keep the results of measurements on record for each and all such injection molding machines by making entries in the daily work report. Besides, the operator is likely to make interpretative and calculative errors in the processing of the operating time analysis as far as the analysis depends on the manual calculation based on the raw data recorded on the daily work report or the like. If the operating times are analyzed through manual calculation based on firsthand time data described in the work diary or the like, moreover, misreading of data or calculation errors are liable to be caused.
SUMMARY OF THE INVENTION
The object of the present invention is to provide an operating time analyzing apparatus for an injection molding machine, capable of accurately analyzing and storing an operating time for each operating condition without bothering an operator.
In order to achieve the above object, a first embodiment of the present invention comprises operating condition detecting means for detecting various operating conditions of an injection molding machine, a plurality of timer means for cumulatively recording times for various operating conditions detected by means of the operating condition detecting means, and data output means for displaying the cumulatively recorded times for the individual operating conditions cumulatively recorded by means of the timer means.
Preferably, the various operating conditions includes the power-on time of the injection molding machine; the apparatus further comprises means for calculating the respective ratios of the cumulative operation times for the individual operating conditions, determined by the timer means, to the power-on time cumulatively recorded by of the timer means, and the data output means for displaying the calculated operation time ratios for the individual operating conditions. Also, the various operating conditions include at least one of a heater heat-up time, alarm generation time, stopping time after the completion of production, manual operation time, and automatic operation time.
Further preferably, a centralized control computer 10 and a plurality of injection molding machines are connected through data transmission lines, with each of the injection molding machines provided only with the operating condition detecting means, while with the centralized control computer provided with the other means.
Furthermore, a second embodiment of the present invention comprises operating condition detecting means for detecting various operating conditions of an injection molding machine, clock means, totalization time output means for outputting a signal when an time output from the clock means agrees with a predetermined time, ti
REFERENCES:
patent: 5200126 (1993-04-01), Wenskus, Jr. et al.
Y. Tsuboi, "Applications of a minicomputer in labor serving and automation", Information Processing, vol. 15, No. 4, pp. 240-245, Apr. 1974, Tokyo.
Kamiguchi Masao
Kubota Kazuo
Saito Osamu
Takemoto Masanobu
Fanuc Ltd.
Heitbrink Tim
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