Profiled cylinder for teaseling and/or fluffing machines

Abstract: A profiled cylinder (10) for teaseling and/or fluffing machines of the type having generally a cylindrical lateral surface and provided at its ends with support hubs (11) for its rotation, in which the lateral surface has a particular profile consisting of a plurality of variously arranged geometrical forms or surface portions (13, 113) of any desired kind.

Description: This invention relates to a profiled cylinder for teaseling and/or fluffing machines. In machines for treating fabrics by fluffing or teaseling, cylinders are used carrying on their outer surface suitable coverings of specific material, for example abrasive material, to determine the final condition of the fabric. The material present on the outer surface determines the particular mechanical action on the fabric and hence enables its condition to be changed on the basis of the required form. DE-A-4 136 146 relates to a profiled cylinder according to the preamble of claim 1. The object of the present invention is to provide an element positionable in a teaseling and/or fluffing machine as an addition to those auxiliary elements which favour improved finishing and which optimize the appearance of the treated fabric. This object is attained according to the present invention by a profiled cylinder for teaseling and/or fluffing machines according to claim 1. The characteristics and advantages of a cylinder formed in accordance with the present invention will be more apparent from the description given hereinafter by way of non-limiting example, with reference to the accompanying schematic drawings, in which: Figure 1 is a side elevation of an embodiment of a profiled cylinder for teaseling and/or fluffing machines according to the present invention, taken in the direction of the arrow F of Figure 2; and Figure 2 is an end cross-section through the cylinder of Figure 1. The figures show a profiled cylinder for teaseling and/or fluffing machines formed in accordance with the present invention and indicated overall by 10. The cylinder 10 is generally of cylindrical shape with support hubs 11 extending from its ends for its rotations, about a longitudinal axis 14. According to the present invention, the lateral surface of the cylinder 10 has a particular profile which can be indicated as consisting of a plurality of geometrical forms of any desired kind. In a cylinder according to the invention, the various portions can be of mutually different extension, hence subjecting the fabric to different types of treatment in its various lateral, selvedge, central and other parts. Figures 1 and 2 show an embodiment of a cylinder according to the invention in which the geometrical forms are defined by milling the lateral surface of the cylinder 10. This milling forms recesses, indicated overall by 113, which are shaped as a triangle with a first side 16 straight and a second side 15 rounded. The third side is represented by the missing lateral surface portion. Specifically, Figures 1 and 2 show that the lateral surface of the cylinder according to the invention comprises four recesses 113. Any two successive recesses wind in mutually reverse directions so as to exert in succession on the fabric an essentially transverse widening action firstly in one direction and then in the other direction. Advantageously a teaseling and/or fluffing machine can comprise one cylinder constructed as shown in the embodiment which is sufficient to provide said complex treatment. In this respect, twisted portions winding in one direction and twisted portions winding in the opposite direction or differently winding recessed portions can be provided in the surface of one and the same cylinder or in part of the surface of a cylinder according to the invention. As stated, such an arrangement comprising one or more cylinders not only exerts the action deriving from the cylinders themselves but also provides a fabric widening action by virtue of the cylinders according to the invention. It should further be noted that the presence of recesses 113 results in a true mechanical action on the fabric. This action can be identified as actual beating of the fabric. Summarizing, the provision of cylinders according to the invention in a teaseling and/or fluffing machine optimizes its operation.

Claims: A profiled cylinder for teaseling and/or fluffing machines of the type having generally a cylindrical lateral surface and provided at its ends with support hubs (11) for its rotation about a longitudinal axis (14), said surface being arranged for abrading engagement with a fabric by turning of the cylinder about said axis, on said lateral surface being provided at least two recesses (113) which are winded on said lateral surface characterised in that said at least two recesses (113) have a triangular-shaped cross-section in a plane perpendicular to the axis of the cylinder, said triangular section having a first (16), a second (15) and a third side, wherein the third side is represented by a missing lateral surface portion, a first recess (113) being directed in first winding direction and a second recess (113) being directed in second opposite winding direction, the recesses generating a mechanical action on the fabric. Cylinder as claimed in claim 1, characterised in that said triangular-shaped section of each recess (113) has a first side (16) which is straight and a second side (15) which is rounded. Cylinder as claimed in claim 2, characterised in that said second rounded side (15) joins said lateral surface. Cylinder as claimed in claim 1, characterised in that said at least two recesses (113) are provided by milling said lateral surface.

Inventors: BERTOLDO FRANCO, DALLA VECCHIA GINO, BERTOLDO, FRANCO, DALLA VECCHIA, GINO
Applicants: SPEROTTO RIMAR SPA, SPEROTTO RIMAR S.P.A.
Application year: 1995
Main classification: D06C11
IPC codes: D06C11