Importance

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Abstract

A calender for thermoplastic material sheets has a frame (1) with rolls (8, 9, 14) for smoothing and cooling the thermoplastic material sheets. The rolls (8, 9, 14) are coupled with the frame (1). The roll (8) is held rotatably stationary. The rotatable roll (9) is radially adjustable with respect to the stationary roll (8). Additionally, the adjustable roll (14) is circumferenitially adjustable around the axis of rotation (X) of the stationary roll by guide cars (15, 16). The guide cars (15, 16) are provided at both ends on circular running paths of guide rails (2', 2', 3', 3'). The guide rails (2', 2', 3', 3') are connected to the frame or are part of it. Accordingly, a rigid support is achieved for the adjustable roll (14). Furthermore, an advantageous ease of access to the area of intake of the material sheet from the sheet die (B) into the calender is achieved. The frame (1) together with the guide rails (2', 2', 3', 3') pivot around a swivel axis which runs parallel to the axis of rotation (X) of the stationary roll (8). This enables adjustment of the frame (1) to different extrusion directions depending on the material used.

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First Claim