Mannesmann Aktiengesellschaft

Demag Aktiengesellschaft

Helmut Kratz

Edgar Bonifer

Walter Duttine

Werner Jahns

Jahns, Werner

Harald Bosch

Gerhard Steigerwald

The invention concerns a conveyor for packages, especially a conveyor for flexible packages such as newspapers, textiles or sacks. The conveyor includes a plurality of sequential, parallel and spaced rollers, which form a conveying surface and are perpendicular to a direction of conveyance. Along their length, the rollers have alternating cylindrical sections and narrowing sections. The narrowing sections narrow to both sides of a highest point along the length of the roller toward the cylindrical sections. A plurality of continuous belts are guided around groups of sequential rollers and run in the direction of conveyance to bridge gaps between the spaced rollers. The belts are positioned around the narrowing sections at the maximum diameter thereof. In order to create a conveyor for packages that is less prone to disturbances, it is preferred that the diameters and the widths of the narrowing sections and the cylindrical sections of the rollers be selected in relation to a width and/or thickness of the belts, such that when a belt is deflected by a package from the highest point of the narrowing section toward the cylindrical section, the belt will lose contact with the package as the package remains on the neighboring belts or the highest point of the roller. The belt thus can independently return to the highest point of the narrowing section, as the belt is driven by its continuing contact with the narrowing section, before the belt is deflected to the neighboring narrowing section and after the package is transported further by the conveyor.

Conveyor for articles with wave-shaped rollers

A conveying roller device having holding locations for the material to be transported in which switch bars (4) extend above the supporting rolls (2) which are mounted between side plates (1) and are driven at the holding positions A, B and C by the drive belt (3). Drive belt (3) is pressed by the belt rolls (5), in raised position, against the supporting rolls (2). Holding position A is the frontmost holding position of the conveying device and switch plate (10A) thereof has been brought into preparatory position by an external control element in the form of a valve or limit switch, i.e. the external control element has, in a pneumatic or electrical logic circuit, created the prerequisite for the holding process which is to take place. This prerequisite can also be established in that a switch bar (4) has been displaced by a piece of material to be transported at a second holding position in front of a first holding position A. Switch bar 4 is developed as two-armed lever and actuates a control element (8) with the lower end (4a) thereof. The control element (8) is also connected to the logic circuit (15) via control lines (14).

Conveying roller apparatus

A hesitation device is provided in a material conveying roller conveyor system which is simple and inexpensive in construction, while at the same time allows accumulation of conveyed materials with any damaging or disturbing effect upon the conveyed material. This is achieved by providing unbalancing weights in the rollers of the conveyor in the stoppage or hesitation area in combination with a driving belt for the rollers having areas of differing coefficients of friction.

Roller conveyor

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Rodgau, Germany

Helmut Kratz