Presses – Automatic or material triggered control – Of actuating means
Patent
1994-12-27
1996-07-23
Gerrity, Stephen F.
Presses
Automatic or material triggered control
Of actuating means
100 93RP, 100 99, 100154, 156378, 1565835, 425171, 425371, B30B 506
Patent
active
055379192
ABSTRACT:
A continuously operating press for the production of particle boards, fiber boards and similar wood boards and plastic boards, wherein a spherical geometrical deformation of the press/heating platen in the longitudinal and transverse directions with the hydraulic actuators in positive or non-positive engagement with the press/heating platen is set during start-up or production by means of different actuating forces in the longitudinal and transverse directions, the setting process being independent of the reaction forces of pressing stock, wherein, to allow a convex bending deformation to be set at the maximum pressing force, the central actuators in each row of actuators are dimensioned to give 105% to about 150% of the maximum pressing force in relation to the outer actuators, and wherein each row of actuators has a position sensor system comprising a feeler rod, a reference gauge bar, a lever mechanism and a measured-value transmitter with a position sensor for the press-nip actual value in the center of the press/heating platen arranged between the web plates, underneath the actuators and outside the area in which the heat might exert a critical influence.
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Bielfeldt Friedrich B.
Graf Matthias
Gerrity Stephen F.
Maschinenfabrik J. Dieffenbacher GmbH & Co.
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