公开(公告)号：US20030236157A1

公开(公告)日：2003-12-25

申请号：US10174922

申请日：2002-06-19

Applicant: CONTOUR FABRICATORS, INC.

Inventor： Richard A. Weaver ,  John W. Schaefer ,  Michael G. Howe

IPC: B31B019/26

CPC classification number: D06J1/06 ,  B31B70/982 ,  B65H19/2207 ,  B65H19/28 ,  B65H45/12

Abstract: Methods and apparatus for folding pliable sheet material wherein the sheet material is wound on a mandrel to form a roll which subsequently is stripped off the mandrel and transferred to a pleating station at which successive creases are formed in the roll to produce a pleated packet. During the winding of the sheet material the latter is adhered to the mandrel by the application of negative air pressure to the material via the mandrel. Following the formation of the roll, the application of negative air pressure is discontinued and positive air pressure is applied to the interior of the roll so as to facilitate stripping of the roll from the mandrel. At the pleating station the roll is creased successively to form a plurality of pleats and the direction in which the creasing proceeds is such as to facilitate the escape of air from the roll as it is pleated.

Abstract translation: 用于折叠柔韧片材的方法和装置，其中片材被卷绕在心轴上以形成辊，随后将其从心轴上剥离并转移到打褶台，在该打褶台处在辊中形成连续的褶皱以产生打褶的包。 在片材卷绕期间，后者通过经由心轴对材料施加负空气压力而粘附到心轴。 在辊的形成之后，停止施加负空气压力，并且将正空气压力施加到辊的内部，以便于从心轴剥离辊。 在打褶站处，辊被连续地折皱以形成多个褶皱，并且压痕进行的方向是为了便于在打褶时从空气中排出空气。