Apparatus for surface embossing man-made lignocellulosic board
AssigneeAB Motala Verkstad
InventorNils E. E. Book, deceased
Life of this patent
Estimating the term…
Abstract
Apparatus for embossing preformed particle board retains the board in a desired position after insertion between a first and a second press plate (4;3) in a press and releases after pressing the board from the press plates. The product (7) is sucked tight against the first press plate (4) after being placed in a desired position in the press. The suction process takes place either directly or via an intermediate permeable means (12; 14) and is so adjusted that it will be sufficient to stip off the board from the second press plate (3). Subsequently, the suction force may be replaced by a pressure force, for releasing the board (7) from the first press plate (4) or the intermediate means (12; 14).
Claims10
In an apparatus for embossing a preformed particle board or the like comprising:
- press means including
- a first press plate shaped to support a preformed board and a cooperating opposed member,
- said press plate and opposed member being adapted to be moved towards and away from one another to close and open said press means, respectively,
- the improvement comprising
- means to establish suction between a board positioned on said first press plate and an adjacent supporting surface thereof to retain the board in fixed position on said first press plate, wherein said board is stripped away from said opposed member when the press is opened following an embossing operation, and
- means for releasing said suction and establishing fluid pressure between said board and the adjacent supporting surface of the press plate when the press is opened and the board and opposed member are in nearby closely spaced relation, to free the board from the adjacent supporting surface of the press plate.
In a method for embossing a preformed particle board or the like in press means including a first press plate shaped to support a preformed board and a cooperating opposed member mounted for relative movement towards and away from one another to close and open said press means, the steps of establishing suction between a surface of said first press means and a preformed board thereon to retain the board thereon so that the board is stripped away from said opposed member when the press is opened after an embossing operation, and releasing said suction and establishing fluid pressure between said board and the adjacent supporting surface of the press plate when the board and said opposed member are in nearby closely spaced relation after the press has been opened, to free the board from the adjacent supporting surface of the press plate.
Dependencies are inferred from the claim text.