Insulating device for a variable thermal rim insulation of a roll
OwnerHeinz-Michael Zaoralekinventor
Life of this patent
Estimating the term…
Abstract
An insulating device of a roll for thermal and mechanical treatment of a web-shaped product, such as a paper web, provides a variable, thermal rim insulation in a peripheral thermal treatment conduit of the roll. The insulating device is formed in a peripheral thermal treatment conduit of a roll body at at least one end of the roll body and has a shifting insert coupled to a positioner. The insulating device is elongatable in the thermal treatment conduit in the longitudinal direction of the thermal treatment conduit. A roll incorporated the insulating device of the invention also includes a roll body, thermal treatment conduits, and a positioner for the insulating device.
Claims24
An insulating device of a roll for thermal and mechanical treatment of a web-shaped product, said device being formed in a peripheral thermal treatment conduit of a roll body at one end of the roll body and comprising at least one shifting insert which is coupled to a positioning means in such a way that a setting movement of the positioning means causes a shifting movement of the shifting insert from a rear position deeper into the thermal treatment conduit, to provide a variable, thermal rim insulation,
- characterized in that
- the insulating device is elongatable in the thermal treatment conduit in the longitudinal direction of the thermal treatment conduit.
The insulating device as set forth in the preceding claim, characterized in that the insulating insert consists of a thermally insulating material, preferably Teflon or a ceramic material, or comprises such a material as an insulating layer.
The insulating device as set forth in the preceding claim, characterized in that the insulating insert is made of stainless steel.
The insulating device as set forth in the preceding claim, characterized in that the thermally insulating longitudinal area is formed in a area of the thermal treatment conduit which elongates the thermal treatment conduit beyond an inlet or outlet of a thermal treatment fluid feeder, towards the end of the roll body.
The insulating device as set forth in the preceding claim, characterized in that the cam mechanism is formed in the thermal treatment conduit.
The insulating device as set forth in the preceding claim, characterized in that an insulating insert or positioning insert arranged movably in the thermal treatment conduit for coupling with the positioning means forms the guideway or the follower of the cam mechanism.
The insulating device as set forth in the preceding claim, characterized in that the insulating insert or the positioning insert forms the guideway and the shifting insert forms the follower, and in that the follower, penetrating the guideway, engages another guideway which forms a linear guide for the shifting insert.
The insulating device as set forth in the preceding claim, characterized in that the insulating insert forms a response member of the cam mechanism.
The insulating device as set forth in the preceding claim, characterized in that the positioning means comprises a positioning spindle which is non-shiftably rotatably mounted in the receiving bore of the trunnion flange and forms a spindle drive with the coupling member for shifting the shifting insert.
A roll for thermal and mechanical treatment of a web-shaped product, said roll comprising:
- a) a roll body;
- b) thermal treatment conduits for a thermal treatment fluid, said conduits running in the roll body near to the surface of the roll body;
- c) insulating devices formed in the thermal treatment conduits at one end of the roll body and comprising shifting inserts which may be moved deeper into the thermal treatment conduits from rear positions, to provide a variable, thermal rim insulation;
- and
- d) a positioning means for the insulating devices;
- characterized in that
- e) the insulating devices are elongatable in the thermal treatment conduits in the longitudinal direction of the thermal treatment conduits.
Dependencies are inferred from the claim text.