Metal working – Plural diverse manufacturing apparatus including means for... – Binding or covering and cutting
Patent
1989-09-05
1991-04-09
Bishop, Steven C.
Metal working
Plural diverse manufacturing apparatus including means for...
Binding or covering and cutting
29 33T, 295641, 29711, 29282, B23P 2300
Patent
active
050052748
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an apparatus for the arrangement, or preparation, of cores intended for use as reel cores in paper-making, in a number of stations, with tools for executing a number of working operations, for example expanding the inner diameter of the core by a milling machine or the like, providing a radial slot in the end edge of the core by means of a saw or slot milling cutter, orientation of end mountings, movement of the end mounting to the end of the core and expansion of the end mounting for fixation thereof in the end of the core, etc., in and/on each one of the ends of the cores, the stations being disposed in side-by-side relationship and being provided with opening and closing grabber claws or grippers for retaining that core which is to be prepared, in each respective station, during the execution of one or more working operations therein.
A previously known apparatus for the arrangement, or preparation, of cores for use as reel cores for winding up the paper web in paper-making is provided with a number of working stations for executing a number of working operations simultaneously on each one of the ends of the core. In the prior art apparatus, it is, int. al., necessary to execute an orientation of the core and, primarily, a rotational orientation of the core in each working station before the working operation proper may be commenced. Since the rotational orientation phase must be executed automatically, this not only entails an extremely complicated construction of each working station, but also implies a serious source of faults and deficient accuracy in the finished, end fitted cores. Not least as a result of these inconveniences, the prior art apparatus has failed to achieve any appreciable success on the market.
The task forming the basis of the present invention is to improve the prior art apparatus and, above all, to eliminate the requirement of execution of an orientation phase before the execution of a working operation in most of the different working stations.
This task is solved according to the present invention in the apparatus disclosed by way of introduction, in that the opening and closing grippers are disposed on the one, free end of an arm which is located at each end of the core and which, at the opposite end in relation to the opening and closing grippers, is pivotal about a shaft disposed beside the station; and that the arms with the opening and closing grippers are interconnected with one another for simultaneous pivoting about the shaft for transferal of a core substantially non-rotatably retained by means of the grippers from the above-mentioned station to the immediately subsequent station, in which open grippers are arranged to be closed about the core and thereby grasp and retain the core in an orientationally controlled position before the preceding grippers are opened for release of the core. The one arm located at one end of the core with its opening and closing grippers is reciprocally displaceable in relation to the other arm disposed at the opposite end of the core with its opening and closing grippers, for adaptation of the distance between the arms to accommodate the length of the core. The shiftable arm is coupled to a carriage which mounts the tool or tools for executing the working operations in and/or on the one end of the core and is in its turn displaceable on rails for adaptation to the length of each and every core, like the corresponding carriage in the other stations, in which the carriages in the subsequent stations are arranged to adjust in compliance with the carriage in the preceding station. The carriage is displaceable by means of a screw which is located on substantially the same level as the rails and proximal to the longitudinal axis of the core located in the working position. The stations are disposed in parallel with one another in such a manner that the travel between the centre of a core fixedly retained by the grippers and the centre of the pivotal shaft of the arms is equal in and between the stations. The piv
REFERENCES:
patent: 3774282 (1973-11-01), Hooper
patent: 3874048 (1975-04-01), Millar et al.
patent: 4716646 (1988-01-01), Jarreby
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