Textiles: spinning – twisting – and twining – Apparatus and processes – Driving
Patent
1988-10-11
1990-02-13
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Driving
57 88, 57 93, 57104, 57263, 57406, D01H 126, D01H 1241, D01H 7882, D01H 1502
Patent
active
048995282
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The instant invention relates to a control device for driving and stopping an open-end spinning element, with a pivoted control lever capable of assuming a production position, a piecing position and a braking position, where it connects a first drive running at production speed when it is in its production position, a second drive running at a slower speed than the first drive when it is in its piecing position, and brings a brake to bear upon the open-end spinning element when it is in its braking position. The control device is provided with stops to hold the control lever in one of the three positions.
To be able to stop an open-end spinning element as desired or to drive it at a predetermined first or second speed, a pivoted control lever capable of assuming three different working positions is known (See WO No. 86/03792). In its production position, the control lever brings a first drive, running at production speed, into driving contact with the spinning element, in its piecing position it brings a drive running at a slower speed than the first drive into driving contact, and in its braking position it brings a brake into contact. The control lever is provided with stops, each of which holds the control lever in one of the three positions. At least the stops holding the control lever in production position and in piecing position are capable of being controlled. Control is effected by means of a solenoid which is controlled by a switching device which also controls the fiber feeding to the spinning device. In order to achieve the necessary time delay between the reinsertion of the fiber feed and the control of the stop, the switching device is followed by a control device. Such a device is expensive, especially if the actuating times for the resumption of fiber feeding and the activation of the stop vary because of different materials being used. Furthermore, such adaptations can only be carried out by trained personnel.
SUMMARY OF THE INVENTION
It is, therefore, the object of the instant invention to provide a device of the above-mentioned type which makes it possible for even untrained personnel to easily control the control lever, and the spinning element, independently of other elements.
This object is achieved through a device of the type mentioned above in that a common control element is provided with stops determining the production position and the piecing position of the control level. The control element is capable of being moved back and forth between at least two switching positions in the direction of movement of the free end of the control lever. The stops for the control lever are activated by means of the common control element, where the mobility of the control element in direction of the free end of the control lever makes it possible bring, alternately into or out, of contact the stop for the production position of the control lever and the stop for the piecing position of the control lever. Control of the control lever is entirely independent of the control of other elements of the open-end spinning device, such as for example, switching on fiber feeding, switching on the yarn monitor, etc., so that the desired activation of the control lever can be obtained without complicated resetting, even manually.
It is not necessary to provide separate stops for the production position and for the piecing position of the control lever. According to a preferred embodiment of the invention, a stop element which, depending upon the switching position of the control element, constitutes either the stop determining the production position or the stop to determine the piecing position of the control lever, is installed on the control element.
To provide a strong and simple embodiment of the invention, the stop element is an integral part of the control element. The control element has the role of determining, by means of its stop element, the applicable work position of the control lever. For that reason, the control element, in addition to being capable of movem
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Fahmuller Maximilian
Schneider Gottfried
Schuller Edmund
Petrakes John
Schubert & Salzer Maschinenfabrik Aktiengesellschaft
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