GB1303892A - - Google Patents

Abstract

1303892 Roller conveyers STOHR FORDERANLAGEN SALZER GmbH 3 Aug 1970 [5 Aug 1969] 37380/70 Heading B8A An accumulating conveyer comprises rollers 12 driven by flexible elements 16a, preferably of plastics material, secured to a driven endless belt 13 supported on vertically adjustable rollers 14. When the elements 16a engage a group of rollers 12 which are prevented from rotating by a stationary conveyed article the elements brush only briefly against the rollers and additional loading on the drive motor is small. Close spacing of the elements 16a enables heavy articles to be readily set in motion and this motion is maintained by the widely spaced elements. Alternatively the elements may be evenly spaced. In Fig. 3 (not shown), although the conveyer is curved the driving belt run is rectilinear. In Fig. 4, elements 16b are in the form of loops, the-belt 13 sliding on a support 34. In place of the loops, flexible tubing may be used. A braking arrangement includes a plate 46 raisable into contact with a group of the rollers 12 and controlled by a pair of detector rollers 38, 39, sensors 42, 43 and a delay system 52. This system may include means for delaying operation and release of the brake. The control may be such as to cause spacing out of articles as they are conveyed, Fig. 6 (not shown). A number of parallel driving belts can be used and there may be rollers intermediate the belt and the conveying rollers. The conveying rollers may be extended to one side for engagement with the flexible elements.