Winding – tensioning – or guiding – Helical or random winding of material – And severing
Patent
1999-05-28
2000-11-14
Walsh, Donald P.
Winding, tensioning, or guiding
Helical or random winding of material
And severing
2424172, B65H 6304, B65H 5471
Patent
active
061457760
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an arrangement in connection with a spooler, in which the cable to be spooled or the like is arranged to move onto the spooler or the like via an accumulator, the moving wheels of which are arranged to move between two extreme positions, depending on the line speed and the spooling speed, in such a manner that the moving wheels are arranged to move into the lower extreme position when the line speed is higher than the spooling speed and into the upper extreme position when the line speed is lower than the spooling speed. The term "cable" is intended herein to refer not only to a cable per se but to other elongated products as well.
When a cable or the like is spooled, such situations may occasionally arise in which the speed at which the cable or the like enters a spooler suddenly decreases due to some reason. Usually, the cable has stuck on the line, and thus the change in the speed is too abrupt for the spooler to adapt to it.
As a result of the situation described above either the cable is cut violently or the spooler or another line component is damaged due to too high a tension peak. In other words, such situations result in damage to the apparatus, e.g. to the guide wheels of the accumulator or, cable and may even cause severe physical injuries. The above situations are especially dangerous when thick cables are handled.
The above-mentioned dangerous situations which may result in damage have presented a problem, which is emphasized by the fact that no attempts have been made to provide existing spooling apparatus with a device which would help to eliminate the problem. An object of the invention is to provide an arrangement by means of which the problem related to the prior art can be obviated. This is achieved with the arrangement of the invention, which is characterized in that a cutting means is arranged in connection with the accumulator, the cutting means being arranged to touch the cable moving via the moving wheels when the moving wheels of the accumulator move into the upper extreme position and to move into a position for cutting the cable as a result of the motion of the cable.
The main advantage of the invention is that it allows to avoid possible damage to the spooler and other line components even when thick cables are spooled. Since damage can be avoided, probability of physical injuries also decreases substantially compared with the prior art. Further advantages of the invention are its simplicity and mechanical operation, and thus there is no need to control or synchronize the actuators electrically. Since the implementation of the invention is simple, the costs related to its introduction are relatively low.
In the following, the invention will be described in greater detail with reference to the accompanying drawings.
FIG. 1 shows a general side view an accumulator in connection with a spooler,
FIG. 2 shows an accumulator according to FIG. 1 seen from another side,
FIG. 3 shows on a larger scale the part of the accumulator according to FIG. 1 in which the arrangement of the invention is installed, and
FIG. 4 shows the part according to FIG. 3 seen from another side.
DETAILED DESCRIPTION OF THE DRAWINGS
FIGS. 1 and 2 show an accumulator of the dancer type arranged, for example, in connection with a spooler. In FIG. 1 reference number 3 denotes the point where the cable enters the accumulator from the line. Reference number 3a denotes the path of the cable or other elongated product in the normal operating position of the accumulator when the moving wheels of the accumulator 2 are in the middle position. The fixed wheels of the accumulator are denoted by reference number 1.
The cable moves from the accumulator to the spooler via point 3c around a wheel 5 measuring the circumferential speed. The spooler is not illustrated in the figures. The structure and function of a spooler are fully conventional technology to one skilled in the art. A pneumatic cylinder 4 maintains a desirable level of tension in the cable.
During normal spooling, the moving wheels 2 of
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Nextrom Holding S.A.
Walsh Donald P.
Webb Collin A.
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