Boots – shoes – and leggings
Patent
1991-12-18
1994-09-13
Gordon, Paul
Boots, shoes, and leggings
364470, 57264, 57265, G05B 902, G06F 1546, D01H 1314
Patent
active
053474490
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a method for eliminating malfunctions in machines, in particular in spinning machines, whereby fault signals are transmitted from the machine to the process control computer controlling the elimination of the malfunction.
In fully automatic yarn production plants, for example, there is only a minimum of service personnel present. They must be able to deal with the malfunctions directly, without delay and in accordance with the operational priorities in order to maintain the usefulness of the whole plant. Present alarm systems do not set the priorities of the required actions in accordance with operational necessities, resulting in delays and unnecessary stress to the personnel.
Alarm systems are known that comprise, for example, blinkers or pertinent acoustic signals in a spinning room or in an individual machine. These alarms are, however, unspecific and unnecessarily stress the operating personnel and in addition give no indication as to the type, place, and priority of the malfunction.
Optical alarm systems must be visible from all sides, whereas acoustic signals are difficult to hear due to the background noise caused by the machines.
Monitor supervising systems for whole groups of machines are known. These systems, however, requires a person who continuously monitors the screen or who, in the event of am alarm, first has to proceed to said screen.
From the DE-OS 31 35 333 a method is known for controlling the operator's or a mobile maintenance device's tasks in a spinning plant comprising a number of operating stations. According to this system, any cases requiring operator intervention are recorded with type and date, and are transmitted to a central data base. This central data base is then queried for cases requiring operator intervention. They are based on the priority of such operator intervention (disposition of causing damage), whereby at least the place and, optionally, the type of the action required according to the event of the highest priority is submitted to the operator or the mobile maintenance unit as the operating station to be serviced. This method has the disadvantage that any occurring malfunction is only recognized through the query itself.
OBJECTS AND SUMMARY OF THE INVENTION
It is a principal object of the present invention to provide a method of the type mentioned above with which recurring malfunctions are to be eliminated as quickly as possible according to their priority.
Additional objects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The solution to this problem consists in a system with a transmitter for emitting an alarm controlled by the process control computer that calls the desired specialist to a certain machine for eliminating the malfunction.
Classical maintenance planning of maintenance specialists distinguishes between planned maintenance, such as lubricating, cleaning, regular checking, preventive replacement or overhauling of components, and the elimination of inadvertent malfunctions. In general, the maintenance work is carried out by unskilled personnel trained on the respective machine. The organization is equivalent to a normal, productive work session. The supervision and control is performed by a qualified specialist, who also trains the personnel.
However, the diagnosis and the elimination of malfunctions requires specialists trained in this field of work. They must be permanently available and able to work according to priorities when malfunctions occur simultaneously. The use of such specialists requires, first of all, a high amount of availability, that can only be realized at the expense of the specialist's performance.
The present method as provided by the invention optimizes the use of such specialists. A principal job ("occupancy work") consists of high-quality maintenance work not subject to any kind of work schedule or of supervising the maintenan
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Beringer Roland
Meyer Urs
Gordon Paul
Maschinenfabrik Rieter AG
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