摘要:
A bearing assembly for supporting a rotatable and axially reciprocable shaft comprising: a housing surrounding a central axis and enclosing an interior space, the housing being subdivided into a top section separable from a bottom section; a journal block located in the interior housing space and having a bore aligned on the central axis, the bore being dimensioned to receive and rotatably support the shaft, and the journal block having a top section separable from a bottom section; and rollers for supporting the journal block within the housing for reciprocal movement with the shaft in the direction of the central axis, the journal block and the housing being configured such that by separating their top sections from their respective bottom sections, the rollers may be accessed for replacement without disturbing the position of the bottom housing section.
摘要:
An apparatus for doctoring a cylindrical rotating surface, comprising a doctor back mounted for rotation about a first axis, and a blade carrier assembly mounted on the doctor back for rotation about a second parallel axis. A doctor blade is removably supported by the blade carrier assembly and is loaded against the rotating surface by a force applied to rotate the doctor back about the first axis. A liquid filled flexible walled tube extends along the second axis between the doctor back and the blade carrier assembly. The blade angle is adjusted by expanding and contracting the liquid filled tube to rotate the blade carrier about the second axis.
摘要:
An apatus for doctoring a roll in a paper machine, comprising a doctor blade and an integral blade holder including a support tray carrying fluid actuated tubes for applying the doctor blade to the roll. The blade holder is removably mounted on and releasably secured to the doctor back.
摘要:
In a pull through doctor blade transfer system, blade edge loading is controlled along the sides of the surface being doctored to relieve loading forces and to achieve a gradual feathering of the blade during its initial application.
摘要:
In a pull through doctor blade transfer system wherein a coiled blade is payed off one rotatable reel while simultaneously being taken up on another rotatable reel, with an intermediate portion of the blade between the reels being supported in a blade holder arranged to apply the blade to a moving surface to be doctored, each reel is driven by a hydraulic motor. In operation, hydraulic fluid discharged from the motor driving the take up reel is fed to the motor connected to the pay off reel. This fluid is pumped to a high pressure by blade induced rotation of the pay off motor, thus creating a braking torque.
摘要:
An apparatus for doctoring a roll surface including a pivot bar adapted to be mounted on a doctor back and which the pivot bar defines an upwardly projecting fulcrum. A first shelf projects forwardly beyond the fulcrum and a top plate pivotally supported on and projecting forwardly beyond the fulcrum overlies the first shelf. The top platen is held downwardly against the fulcrum. Blade support members are carried by and cooperate with the top plate to define forwardly open slots, which slots are configured and dimensioned to receive a rear edge of a forwardly projecting doctor blade. The blade support members have rearwardly projecting second shelves underlying the first shelf and a loading mechanism is interposed between the first and second shelves for pivoting the top plate on the fulcrum in a direction urging the doctor blade against the roll surface.
摘要:
An apparatus for doctoring a roll in a paper machine, comprising a doctor blade and an integral blade holder including a support tray carrying fluid actuated tubes for applying the doctor blade to the roll. The blade holder is removably mounted on and releasably secured to the doctor back.
摘要:
An apparatus for doctoring a cylindrical rotating surface, comprising a doctor back mounted for rotation about a first axis, and a blade carrier assembly mounted on the doctor back for rotation about a second parallel axis. A doctor blade is removably supported by the blade carrier assembly and is loaded against the rotating surface by a force applied to rotate the doctor back about the first axis. A liquid filled flexible walled tube extends along the second axis between the doctor back and the blade carrier assembly. The blade angle is adjusted by expanding and contracting the liquid filled tube to rotate the blade carrier about the second axis.
摘要:
A doctoring apparatus employs a doctor blade having a length greater than the face length of the surface being doctored. A blade holder applies an intermediate portion of the blade to the doctored surface. The blade is movable longitudinally through the blade holder, and has continuing portions extending beyond the ends of the holder. At least one clamp acts on one of the continuing blade portions. The clamp is adjustable between a closed setting preventing relative movement between it and the blade, and the open setting permitting such relative movement. A drive reciprocates either the blade holder or the clamp in one direction when the clamp is closed and in the opposite direction when the clamp is opened, thereby causing the blade to move incrementally in one direction across the surface being doctored.