Controlled compression winding method and apparatus
AssigneeIsover Saint-Gobain
InventorsBernard Bichot, Henri Lemaignen, Bernard Louis
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Abstract
A method and apparatus for forming rolls of compressible materials such as a mineral wool felt, wherein the felt is rolled up in a space defined by a pair of conveyors and a compression roll. The position of at least one of these elements, particularly the compression roll, is varied during the course of winding, according to a preset program and as a function of the length of felt already rolled, in such a way as to produce a predetermined thickness in each turn of the rolled felt, whereby it is possible to achieve particularly more uniform compression over the entire length of the rolled up felt strip.
Claims10
A method of forming rolls from strips of compressible material, comprising:
- continuously transporting the strip of material into a restricted space defined by at least three elements driven with a movement which causes the strip to be rolled onto itself;
- successively contacting the strip with each of these element such that rolling up of said strip occurs;
- varying a position of one of the elements to direct the rolling process during the successively contacting step;
- controlling the position varying step in accordance with a predetermined program as a function of the length of the strip rolled up, in such a way as to produce a predetermined thickness, which may vary during the course of the rolling up of said strip according to a predetermined algorithm, whereby said strip is uniformly compressed over a predetermined length of said strip.
An apparatus for forming rolls for strips of compressible material, comprising:
- an assembly of at least three elements defining a space in which said strip is subjected to a rolling process wherein said strip is rolled up into a roll;
- means for driving said elements such that upon contact therewith, the strip is adapted to be rolled onto itself within the space defined by said elements, at least one element being movable in relation to the others during the course of the operation;
- motor means for displacing said movable element;
- control means for controlling said motor means;
- plural sensors for monitoring the formation of said roll;
- and
- computing means having a memory and operative according to a predetermined program stored in said memory for processing measurement signals produced by said sensors to derive thickness signals applied to said control means to control the thickness of said strip during rolling as a function of the length of the strip rolled up so as to produce a predetermined thickness which may vary according to a predetermined algorithm whereby said strip is uniformly compressed over the length of said strip.
Dependencies are inferred from the claim text.