Device and method for forming a uniform or profiled fleece or a uniform or profiled fiber flock mat

摘要

The device for producing a uniform or profiled fleece or a fiber flock mat includes a material dispensing device which produces a fleece and a transport device for the further transport of the fleece. The device also includes a measuring device to determine a transverse profile and a longitudinal profile of the fleece by measuring the mass per unit area of the fleece across its width, and a profile-changing device for supplying individualized fibers or fiber flocks to the fleece. A control unit controls the profile-changing device on the basis of the results of the measuring device in such a way that the profile-changing device supplies the individualized fibers or fiber flocks section by section in a targeted manner. Thus, depending on the purpose of the application, a uniform fleece or a fleece with a nonuniform transverse profile or longitudinal profile can be produced.

主权项

1. A device for forming a uniform or profiled fleece or a uniform or profiled fiber flock mat, comprising:
a material dispensing device, which produces a fleece or a fiber flock mat of a predetermined width; a transport device downstream from the material dispensing device for further transport of the fleece or fiber flock mat in a transport direction; a measuring device for measuring a mass per unit area of the fleece or fiber flock mat across the width of the fleece or fiber flock mat transversely to the transport direction in a measuring area of the transport device to determine a transverse profile and a longitudinal profile of the fleece or fiber flock mat; a profile-changing device in a profile-changing area downstream from the measuring area, wherein the profile-changing device comprises a feed device for supplying individualized fibers or fiber flocks to the fleece or the fiber flock mat or a removal device for removing individualized fibers or fiber flocks from the fleece or from the fiber flock mat; and a control unit for controlling the profile-changing device on the basis of results of the measuring device in such a way that, to make the fleece uniform, the profile-changing device supplies individualized fibers or fiber flocks to identified thin sections in the fleece or fiber flock mat or removes individualized fibers or fiber flocks from identified thick sections in the fleece or fiber flock mat, or in such a way that, to form a desired nonuniform transverse profile or longitudinal profile of the fleece or of the fiber flock mat with thin sections and thick sections, the profile-changing device supplies or removes individualized fibers or fiber flocks in targeted fashion.