Pipe joints or couplings – With assembly means or feature
Reexamination Certificate
1999-03-30
2001-04-17
Nicholson, Eric K. (Department: 3627)
Pipe joints or couplings
With assembly means or feature
C285S124300, C285S026000
Reexamination Certificate
active
06217081
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a device for coupling and uncoupling the media supply lines at bearing chocks of rolls, particularly back-up rolls, mounted in roll housings.
2. Description of the Related Art
Coupling and uncoupling of media supply lines poses difficulties particularly in the flood lubricated bearings of cold rolling stands because the coupling connections of the bearing chocks are also always located on the drive side of the roll stand. Accordingly, access to these coupling connections is made difficult and requires substantial experience of the operating personnel. This is particularly true for the relatively large coupling elements of the oil discharge lines.
SUMMARY OF THE INVENTION
Therefore, it is the primary object of the present invention to provide a device of the above-described type which makes it possible in spite of the described difficulties to couple the media supply lines with the coupling elements thereof quickly in a semiautomatic process to the connections in the bearing chocks and to uncouple them in the same manner.
In accordance with the present invention, the coupling elements of the media supply lines are arranged commonly in a carrier member so as to face the media connections in the bearing chock, wherein the carrier member is guided in a guide frame so as to be movable parallel to the direction of the adjustment movement of the bearing chocks, and wherein the guide frame is mounted in guide members connected to the roll stand so as to be movable in the axial direction of the rolls toward the bearing chock and away from the bearing chock.
In accordance with a feature of the present invention, the guide frame is composed of a pair of guide groove rails for the carrier member of the coupling elements constructed as a rectangular support plate, wherein the guide groove rails are connected above and below the support plate through transverse webs and the guide groove rails are with their ends slidably mounted on cantilever projections which are rigidly connected to the roll housing. This movement can be effected by means of a piston/cylinder unit arranged on the roll housing and connected to the guide frame.
In accordance with another useful feature of the present invention, a fixed centering bolt is provided at the outer side of the bearing chock, wherein the centering bolt can engage in a corresponding centering recess in the support member on which the coupling elements are mounted. For facilitating the coupling process, the coupling elements are mounted in a floating manner so as to be slightly transversely movable.
The device operates practically automatically. After the roll has been inserted into the roll stand, the support member is aligned by means of the centering bolt engaging in the centering recess relative to the bearing chock in such a way that the coupling elements mounted on the carrier member are located opposite the coupling connections of the bearing chock. After subsequently locking the rolls, the guide frame with the carrier member is moved by means of the piston/cylinder unit in the axial direction of the rolls toward the bearing chock and simultaneously the coupling elements of the media supply lines are coupled to the connections in the bearing chock. The stop provided at the bearing chock limits the movement of the guide frame. After the roll is unlocked, the carrier member follows the adjusting movements of the roll within the guide members of the guide frame.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of the disclosure. For a better understanding of the invention, its operating advantages, specific objects attained by its use, reference should be had to the drawing and descriptive matter in which there are illustrated and described preferred embodiments of the invention.
REFERENCES:
patent: 3580615 (1971-05-01), Prosser
patent: 3776575 (1973-12-01), Gilvar et al.
patent: 4615546 (1986-10-01), Nash et al.
patent: 4915419 (1990-04-01), Smith, III
patent: 5333691 (1994-08-01), Dean et al.
patent: 5924741 (1999-07-01), Karlsen
Kueffner Friedrich
Nicholson Eric K.
SMS Schloemann--Siemag Aktiengesellschaft
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