Gripping head of a sheet stretcher with a centering device

A gripping head (2) of a sheet stretcher has a centering device (4) for centering a sheet (1) to be stretched in the middle of the gripping head (2) before the sheet is gripped and stretched. The centering device comprises two centering arms (5) which move with their edges towards the longitudinal s...

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Bibliographic Details
Main Authors KUTZ; HEINRICH, JUNG; GERD
Format Patent
LanguageEnglish
Published 17.07.1984
Subjects
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Summary:A gripping head (2) of a sheet stretcher has a centering device (4) for centering a sheet (1) to be stretched in the middle of the gripping head (2) before the sheet is gripped and stretched. The centering device comprises two centering arms (5) which move with their edges towards the longitudinal sides of the sheet and are synchronously displaced in opposite directions and at right angles to the axis of stretching. In order to facilitate optimum gripping of the sheet automatically, guide rods (9) having engaging members (10) sliding thereon are provided on the centering arms (5) and extend parallel to the axis of stretching. The ends of the engaging members (10) have stops (14), against which the front end of the sheet (1) bears when fully inserted. A distance-measuring device (18), is provided on the centering arm (5) and has a cable drum (22) and a potentiometer (20) on the same shaft (21). The end of the cable is secured to the engaging member ( 10). In this way the depth of insertion may be measured and controlled by the potentiometer (20).
Bibliography:Application Number: US19820359357