Buss Ag

Other

Leistritz Extrusionstechnik Gmbh

Leistritz Aktiengesellschaft

Wolfgang Walter

Martin Schötzau

Cem Turan

Hans-J&ouml;rg R&uuml;sch

Wolfgang B&uuml;rger

Amadeus Wiesemann

Ilaka Mupende

Reinhold Holbein

Peter Dietz

Guenther Rduch

Guenter Schaefer

Robert Rein

A mixing and kneading machine for continuous preparation processes, such as for producing granules, extruded profiles, or molded articles, such as polymer granules, polymer extruded profiles, or polymer molded parts, having a feeding and mixing device () and a discharge device (), wherein the feeding and mixing device includes a housing (), a screw shaft (), and a connecting element (), wherein the connecting element is arranged at a front side of the housing and is also connected to the discharge device, wherein a hollow interior is formed in both the housing and the connecting element, and the screw shaft extends, at least sectionally, in the axial direction through the interior of the housing and, at least sectionally, in the axial direction through the interior of the connecting element, and wherein a plurality of kneading elements (), which extend from the inner circumferential surface of the housing into the interior, are provided in the housing, and wherein kneading elements () are also arranged on the inner circumferential surface of the connecting element and extend into the interior of the connecting element, and the discharge device has a degassing device ().

Mixing and kneading machine with a discharge device which has a degassing device

A worm shaft for a mixing and kneading machine in particular for continuous preparation processes, comprising a shaft rod, on the circumferential surface of which blade elements are arranged which are spaced apart from one another and which extend outward from the circumferential surface of the shaft rod, wherein the blade elements are arranged on the shaft rod, at least in one section extending in the axial direction of the worm shaft, in three rows extending in the axial direction of the worm shaft, wherein at least one of the blade elements of one of the rows is different from one of the blade elements of one of the other rows, and/or the rows of blade elements, viewed in cross-section of the shaft rod, are distributed irregularly over the circumference defined by the outer circumferential surface of the shaft rod, and wherein the angular distance between the midpoints M of the outer circumferential surfaces of the blade elements on the circumferential surface of the shaft rod of adjacent rows differs between at least two of the three rows of the at least other two rows, and including wherein, for example, each of the blade elements of the at least one section extending in the axial direction of the worm shaft has a longitudinal extension which extends in an angle of 45° to 135° to the axial direction of the worm shaft.

Asymmetrical three-blade screw-type shaft for a mixing and kneading machine

Mixing and plasticating machine () for continuous conditioning processes, comprising: a housing () in which a hollow interior () is formed that is delimited by the interior peripheral surface of the housing () and extends in the longitudinal direction of the mixing and plasticating machine (); a screw shaft () which extends through the interior () of the housing (), rotates in the interior () of the housing () during operation and simultaneously moves translationally back and forth; a drive which rotates the screw shaft () during operation; and a filling device () arranged on the housing (), for feeding at least one starting material into the interior () of the housing (), the filling device () extending through a cut-out () that extends through the housing wall () or being connected to a cut-out () that extends through the housing wall (), the filling device () comprising at least two cavities (') that each extend over the height of the filling device (), which cavities are separated from one another by at least one separating wall (′).

Mixing and plasticating machine having a filling device with a separating wall, where the filling device is arranged on a housing of the machine, and method related thereto

A worm shaft for a mixing and kneading machine particularly for continual processing having a shaft bar, on the circumferential surface of which blade elements are arranged to be spaced apart from one another extending outwards from the circumferential surface of the shaft bar, wherein the blade elements are arranged on the circumferential surface of the shaft bar, at least in one section extending in the axial direction of the worm shaft, in two rows extending in the axial direction of the worm shaft, and wherein each of the blade elements of the at least one section extending in the axial direction of the worm shaft has an elliptic, oval, or biconvex outer peripheral surface in the top view.

Double-bladed worm shaft for a mixing and kneading machine, wherein each of the blade elements has an elliptic, oval, or biconvex outer peripheral surface in the top view

A worm shaft for a mixing and kneading machine in particular for continuous preparation processes, comprising a shaft rod, on the circumferential surface of which blade elements are arranged which are spaced apart from one another and which extend outward from the circumferential surface of the shaft rod, wherein the blade elements are arranged on the shaft rod, at least in one section extending in the axial direction of the worm shaft, in three rows extending in the axial direction of the worm shaft, wherein at least one of the blade elements of one of the rows is different from one of the blade elements of one of the other rows, and/or the rows of blade elements, viewed in cross-section of the shaft rod, are distributed irregularly over the circumference defined by the outer circumferential surface of the shaft rod, and wherein the angular distance between the midpoints M of the outer circumferential surfaces of the blade elements on the circumferential surface of the shaft rod of adjacent rows differs between at least two of the three rows of the at least other two rows, and including wherein, for example, each of the blade elements of the at least one section extending in the axial direction of the worm shaft has a longitudinal extension which extends in an angle of 45&#xb0; to 135&#xb0; to the axial direction of the worm shaft.

Double-bladed worm shaft for a mixing and kneading machine, wherein each of the blade elements has an elliptic, oval, or bioconvex outer peripheral surface in the top view

Screw shaft element

With a mixing and kneading machine (), wherein a worm shaft () moves in a housing () in a rotating manner and moves back and forth in a translatory movement, receptacles for kneading elements () are distributed non-uniformly. It is thereby possible to equip the receptacles with varying numbers of kneading elements. Quick adaptation is also thereby possible. In one embodiment, the number of kneading elements even varies over the extension direction of the mixing and kneading machine ().

Mixing and kneading machine with receiving areas for kneading elements, said receiving areas being distributed over the inner circumferential surface of the housing in a non-uniform manner

An extruder screw includes a screw shaft with several screw elements which can be or have been detachably slipped onto this shaft, the screw shaft having an external gearing and the screw elements having an internal gearing which engage the external gearing. The profile of the teeth of the external and the internal gearing are asymmetric, whereby in relation to a preferred direction of rotation of the extruder screw, the torque-transferring flanks of the teeth of the external and the internal gearing make a smaller angle with the perpendicular to the axis of rotation than do respective opposing flanks, at the teeth, of the external and internal gearing.

Extruder screw, extruder and shaft-hub connection

A feeding device, particularly for feeding powdered materials into a device processing the same, in particular an extruder, the feeding device including a housing with a receiving region for receiving the material, which is movable laterally over at least one flexible wall, which is movable by at least one moving mechanical element acting thereon, wherein the element is movable along the wall. The wall exterior has bumps, is moved via the element, and/or the element is non-round in its motion.

Feeding device particularly for powdered materials into a device processing the same

The functioning of an aircraft is dependent on numerous mechanical, hydraulic and electronic systems. Access to these systems, for example for maintenance purposes, can often only be made from the outside or inside of the aircraft by removing panels. In order to protect the systems from environmental influences such as water ingress, a reliable panel sealant is required. A sealant material has been developed which before use consists essentially of a) 30-90% by weight porous base material and b) 10-70% by weight corrosion inhibitor having the requirements that it is compatible with saud porous material and has a group which is polar in nature. Preferably the porous base material is expanded polytetrafluorethylene. Further disclosed is a method for manufacturing sealantg material with anti-corrosion properties comprising the following steps: a) a first step of manufacturing a porous base sealant material (,), b) a second step of preparing a fluid (,) of a corrosion inhibitor, c) a third step of applying said fluid to said base sealant material (,) and d) a fourth step of drying the base sealant material to form the sealant material with anti-corrosion properties.

Growing community of inventors

Aalen, Germany

Wolfgang Walter