Patent GB-1086913-A (GB)
Title: Improvements in or relating to methods of and apparatus for forming and wrapping kneadable material
IPC: A01J21/02
Filed: 1964-10-09
Abstract: 1,086,913. Moulding and wrapping up. ALOFIN VERWALTUNGS & FINANZIERUNGS A.G. Oct. 9, 1964 [Oct. 9, 1963], No. 41357/64. Heading B8C. In order to wrap blocks of kneadable material while reducing inadvertent deformation of the blocks during wrapping, end flaps of the wrapper are folded downwards and upwards by the pivoted movement of elements which remain parallel to the respective flaps during folding. As described, a travelling mould 1 is filled with butter at a filling station (not shown) and moved to the position shown in Fig. 1. A ram 2 ejects the formed block on to a paper wrapper (not shown) and on to a carrier 4, whose walls 4b . . . 4d are inclined outwardly to prevent damaging the block. The ram is retracted, the middle portion thereof rising first, as shown in chain lines, to prevent sticking. Carrier 4 then moves in the direction of the arrow, rollers 4f moving out of a depression 3a causing walls 4b, 4c to assume a vertical position so that the wrapper assumes a U-shape. Folding means 5 overtake carrier 4 so that plate 5a folds down the rear upwardly extending flap and cams 5b the rear sideways and vertically extending flaps. Subsequently rod 6 folds down the forward upwardly extending flap and cams 7 the forward sideways and vertically extending flaps. A plate 8 then travels synchronously with carrier 4, riding on rails 8b so that plate 8c descends and applies pressure to the block top surface. Simultaneously control means 8f, 8g cause side wings 8d to pivot downwards to fold down the top sideways horizontally extending flaps. After plate 8 has risen from the block, the carrier 4 encounters cams 9 which cause side walls 4d to assume the vertical position, thus folding up the bottom sideways and horizontally extending flaps. Finally the walls 4b . . . 4d again assume their " open " position and the wrapped block is delivered to a stop 10. In a second embodiment illustrated in Figs 2a . . . 3b (not shown) and Fig. 4, the same principle is applied, the main modifications being: (i) ram 16 carries a frame plate 21 so that on disengagement ram plate 19 rises first and plate 21 follows, to prevent sticking; (ii) instead of folding cams 5b, levers (27) which are usually normal to the direction of motion pivot inwards through 90 degrees to fold the rear sideways and vertically extending flaps; (iii) folding rod 6 and wings 8d are replaced by a sliding frame (28) the trailing edge of which folds back the forward upwardly extending flap; thereafter the frame moves with the carrier and flaps (29), pivoted about horizontal axes extending longitudinally in the frame, are swung down to fold downwards the upper sideways and horizontally extending flaps. Thus there is no means to apply sustained pressure to the block top and the upper sideways and horizontally extending flaps are folded before, instead of after, the folding of the forward sideways and vertically extending flaps; and (iv) the lower sideways and horizontally extending flaps are folded by stationary control flaps (35), the carrier having no side walls to effect this.