Ferag Ag

Feramatic Ag

Bruno Weber

Jurg Eberle

A winding core for winding printed products. The core includes two coil parts, each of which includes at least one coiled profile and a step on each of an inner face and an outer face thereof. The step is formed by a corresponding one of two ends of the at least one coiled profile, each coiled profile further including coil windings having cooperating first joining components disposed on axial sides thereof for joining the windings to one another, each coiled profile having a freely selectable axial extension thereby allowing a free selection of an axial extension of the hollow cylinder. Two end rings of the core include second joining components thereon cooperating with the first joining components for axially joining the two end rings to the coil parts, each inner face of each end ring facing a corresponding coil part including a step thereon juxtaposed against and having an axial extension substantially equal to an axial extension of a corresponding step of the corresponding coil part. A middle ring of the core includes third joining components thereon cooperating with the first joining components for axially joining the middle ring to the coil parts, each of two faces of the middle ring facing a corresponding coil part and having a step thereon juxtaposed against and having an axial extension substantially equal to an axial extension of a corresponding step of the corresponding coil part.

Hollow cylinder with freely selectable axial extension

A gripper for conveying printed products is disclosed. The gripper has two gripper parts mounted so as to be pivotable on a shaft which, in turn, is mounted rotatably in a holder. Connected to this shaft so as to be fixed against rotation is closing lever which bears at its end a follower roller which interacts with fixed closing links or cams. Furthermore, a resting part for a compression spring is connected to the shaft via a spreader ring so as to be fixed against rotation. This compression spring is supported at its other end on a bearing part which is integral with the one gripper part. A pivot movement of the closing lever results in a corresponding clockwise pivoting of the resting part. As a result, pivoting of the one gripper part into the clamping position is brought about via the compression spring. This one gripper part is blocked in its clamping position in which the compression spring is compressed and exerts a corresponding clamping force.

Gripper for a conveying device for conveying single-sheet or

A conveying system has at least two equidistant conveyor chains. In order that the chain links of the conveyor chains also move synchronously on conveying path portions in which the radii of curvature of the individual chain paths differ from one another, the chain link spacings can be adapted by corresponding control means to the ratio of the radii of curvature of the individual chain paths.

Conveying system with conveyor chains

The invention relates to a drive, particularly a push and pull drive, which has a cylinder with a cylinder inner chamber (Z) and a cylinder axis (F) and a piston movably arranged in the cylinder and to which is fixed a flexible force transfer means (U). For a double-action drive the cylinder inner chamber (Z) or the piston must have a larger cross-sectional surface than the force transfer means (U). In order that, despite this, the cylinder wall can serve as a guidance means for the flexible force transfer means, either the cylinder inner chamber or the force transfer means has a non-circular cross-section, so that on a cross-section there are at least two points (A1 to A3), on which the cylinder inner wall can guide the force transfer means.

Fluid-operated drive

A gripper for use in a conveying device which conveys printed products is disclosed. The gripper has two gripper parts which are mounted so as to be freely pivotable on a shaft. The first gripper part can be pivoted between an open position and a clamping position. This purpose is served by a closing lever which is seated on the shaft so as to be fixed against rotation. The rotary movement of the shaft is transmitted via a resting part, which is connected to said shaft so as to be fixed against rotation, and a compression spring which is supported on the resting part and, at the other end, acts on the first gripper part. The closing lever supports a follower roller which is mounted so as to be freely rotatable and interacts with closing links or cams. A locking device is provided for locking the first gripper part in the clamping position. In order to allow the first gripper part to close in any pivot position of the gripper and with the gripper moving in opposite directions, the closing lever encloses an angle .alpha. which is less than 90.degree. with the first gripper part.

Growing community of inventors

Berg, Switzerland

Bruno Weber