Sheet feeding or delivering – Feeding – With means to align sheet
Patent
1987-11-12
1989-06-13
Schacher, Richard A.
Sheet feeding or delivering
Feeding
With means to align sheet
B65H 904
Patent
active
048385387
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
This invention relates to a sheet material centering and positioning apparatus adapted to be located between a destacker and a press machine and adapted to supply sheet materials conveyed by the destacker one by one to the press machine for working.
BACKGROUND TECHNIQUE OF THE INVENTION
When feeding the sheet material conveyed by the stacker into the press machine, it is necessary to correspond the centre or a predetermined point of the sheet material with the centre of the press machine and correspond the position of the sheet material with the stroke of feed thereof to the press machine. To achieve this, a sheet material positioning apparatus has so far been located between the destacker and the press machine.
For example, as disclosed in Japanese Patent Publication No. 54-11190, Japanese Utility Model Application Laid-open Specification No. 57-11635, Japanese Patent Application Laid-open Specification No. 59-24537, and further in Japanese Patent Application Laid-open Specification No. 61-38725, etc., a sheet material positioning apparatus is known which comprises a body frame having a pair of side guides, at least a front gauge and at least a rear gauge mounted, respectively, on the body frame, the arrangement being made such that the centering of a sheet material is made by these pair of side guides to correspond the centre of the sheet material with that of the press machine and the position of the sheet material in the feeding direction is controlled by the front and rear gauges.
Such a conventional sheet material positioning apparatus has been disadvantageous in that, since the above-mentioned pair of side guides are disposed oppositely and in parallel relationship in the direction at right angles to the sheet material feeding direction and arranged to be moved towards and away from each other, the sheet materials which can be subjected to centering are limited only to those whose both side surfaces in the feeding direction are parallel, and therefore centering of sheet materials of various configurations can not be made.
SUMMARY OF THE INVENTION
The present invention has been made in view of the above-mentioned situation of the conventional apparatus and has for its object to provide a sheet material positioning apparatus which enables centering and positioning of sheet materials of any shapes in the feeding direction to be achieved.
To achieve the above-mentioned object, according to the present invention, there is provided a sheet material positioning apparatus comprising a body frame; at least each one pair of skid bars on the left and right sides, respectively, each pair consisting of a plurality of skid bars extending longitudinally in the sheet material feeding direction and mounted on said frame in parallel with each other so that each pair may be moved freely up and down; at least a pair of left and right front gauges mounted on said frame so that they may be moved freely and independently with each other in the sheet material feeding direction and also in the vertical direction so as to receive the leading end of the sheet material in the feeding direction thereof; at least a pair of left and right rear gauges mounted on said frame so that they may be moved freely and independently with each other in the sheet material feeding direction and also in the vertical direction so as to abut against the trailing end of the sheet material in the feeding direction thereof thereby achieving the positioning of the sheet material; and at least a pair of left and right side gauges mounted oppositely on said frame so that they may be moved freely and independently with each other towards and away from each other in the direction at right angles to the sheet material feeding direction, characterized in that said pair of side guides are mounted in such a manner that they can be turned freely and independently with each other in a horizontal plane.
Further, according to the present invention, there is provided a sheet material positioning apparatus, characterized in
REFERENCES:
patent: 3408140 (1968-10-01), Hemphill
patent: 4493412 (1985-01-01), Krehnovi
Kabushiki Kaisha Komatsu Seisakusho
Kananen Ronald P.
Schacher Richard A,.
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