US 4,726,871 AGranted

Continuously operable press for the manufacture of laminates

AssigneeG. Siempelkamp GmbH & Co.

InventorsWalter Husges, Wolfgang Gotz

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Abstract

A continuously operable press for the manufacture of laminates and similar products has a heated press roll, two guide rolls, and at least one tensioning roll. One end of the rolls is journaled in bearings at a fixed support wall and the other end of each roll is removably journaled in bearings of a movable support wall. A pressure belt is passing over the rolls, but a decorating roll sleeve can be slid on and of from the press roll, and this provides a decoration on the adjacent laminate surface. The press has a device for lifting the relaxed pressure belt so as to remove the decorating roll sleeve. The lifter device has at least two transverse lift bars with suction heads, and the lift bars are distributed about the upper circumferential region of the press roll. Compressed air can be introduced between the press roll and the decorating roll sleeve when taking the decorating roll sleeve from the press roll. The movable support wall comprises a clamping assembly for holding the decorating roll sleeve during removal from the press roll.

Claims16

Dependent claims

A press for the continuous treatment of a laminate web which is transported through the press, said press comprising:

a fixed support wall;
a movable support wall spaced from and opposite said fixed support wall;
means for selectively displacing said movable support wall with respect to said fixed support wall;
a heated press roll mounted in said fixed support wall and releasably mounted in said movable support wall;
a decorating roll sleeve on and removable from said press roll;
at least two guide rolls mounted in spaced relation with respect to said press roll in said fixed support wall and releasably mounted in said movable support wall;
a pressure belt wound about said at least two guide rolls and said press roll on top of the decorating roll sleeve;
at least one tensioning roll for subjecting said pressure belt to tension;
a lifter device for moving said pressure belt out of contact with said decorating roll sleeve, said lifter device including at least two transverse lift bars with suction heads, with said transverse lift bars being distributed about an upper circumferential region of said press roll;
means for supplying compressed air to said press roll at least when the respective decorating roll sleeve is to be removed from said press roll;
and
a clamping device at said movable support wall adapted to grip a decorating roll sleeve when said pressure belt has been raised by said lifter device, for slidingly displacing the decorating roll sleeve with the motion of said movable support wall relative to said press roll.

9 more elements

Dependencies are inferred from the claim text.