Patent GB-994317-A (GB)
Title: Apparatus for feeding multi-layer paper tube portions from a tube-forming device to a bottom-laying device
Inventor: DAMBRACHER XAVER
IPC: B65H31/30
Filed: 1962-06-06
Abstract: 994,317. Feeding and delivering sheets. M. GENNERICH, and A. WINDMOLLER, [trading as WINDMOLLER & HOLSCHER]. June 18, 1962, No. 23304/62. Headings B6B and B6H. [Also in Division B8] Delivery apparatus.-An apparatus for making cross-bottom valve bags consists of a tube-forming device and a bottom-laying device and a pivotable delivery table 6 upon which batches of tubes 19 are formed and which deliver the batches on to a horizontal portion of a conveyer. The table 6, Fig. 4, is longitudinally slotted and is rotatably mounted by means of a pair of brackets 14 on a shaft 16. A pair of levers 32 is fixed to the shaft 14 and projects through slots 34 in the table, each lever having a crosspiece 36 which is slightly inclined towards the lower surface of the table. Two supporting bars 38 of a rake 41 are adjustably mounted in the crosspieces 36. A pair of side walls 21 and an end wall 23 are adjustably mounted on the upper surface of the table and a shaking motor 24 on the lower surface ensures that the tubes are properly aligned in a batch as they are delivered on to the table from a conveyer 18. A continuously driven cam disc 25 is formed with a camtrack 26 in which a follower-roller 27 carried by a pivoted lever 28 is engaged. The lever 28 has an arm 29 carrying a toothed segment 30 which meshes with a gear 31 mounted on the shaft 16. When a complete batch has been deposited on the table 6 the shaft 16 is oscillated by means of the cam disc 25 whereby first the rake 41 is caused to rise through slots in the table 6 and grip the rear or upper end of the batch, and then the table itself, owing to the engagement of the surfaces 42 of the crosspieces 36 with the underside thereof, is pivoted about the shaft 16 in an anticlockwise direction until it assumes a horizontal position in which the batch of tubes is deposited upon the conveyer which feeds it to the bottomlaying device. The movements of the rake and table are then reversed until the parts have returned to the Fig. 4 position in readiness to receive the next batch. In a modification, Fig. 19, the delivery table has two working surfaces, each fitted with grippers 219. When a batch of tubes has been delivered to one surface the grippers 219 are closed and the table is pivoted about its axis 192 until it assumes a horizontal position with the batch of tubes underneath. The whole table is then moved horizontally until it overlies a conveyer 9, when the grippers are opened and the batch is deposited on the conveyer. The table is then repositioned beneath the delivery end of the conveyer 18 with the other working surface in the receiving position. In a further modification, Figs. 17, 18, a tube-forming device 1 supplies two bottomlaying devices 7, 8 via conveyers 160, 161, 166, 167. The conveyer 160 has two delivery tables 162, 163 associated therewith which are pivotally mounted on vertically movable brackets 170, 171 respectively on a carriage 172 which is horizontally slidable in a direction transverse to the conveyer 160 on rails 174. A similarly mounted pair of tables 164, 165 is associated with the conveyer 161. When the tables 162, 165 have received batches from their respective conveyers 160, 161 they are moved by means of their slidable carriages to positions overlying the conveyers 166, 167 respectively. They are simultaneously rotated to a horizontal position shown in chain-dotted lines in Fig. 18, the tubes being held thereon by grippers similar to the grippers 219, Fig. 19, and are also rotated through 90 degrees in a horizontal plane as is indicated in Fig. 17. The latter rotation serves correctly to orientate the batches for feeding into the machines 7, 8. The tables are then lowered the grippers are opened and the batches are deposited on the conveyers. The tables 163, 164 are now in position to receive tubes and when a batch has been assembled on each the carriages are moved in the opposite directions so that the tables 163, 164 can deposit the batches on the conveyers 167, 166 respectively. A device for delivering successive batches of tubes to different conveyers 91, 92 after delivery by a table 6 to a conveyer 44 is shown in Fig. 9. The conveyers 91, 92 are guided round rollers 89, 90, 96, 97, the axes of which form pivot points for pairs of rods 83, 84, 85. The rods 85 are reciprocated by a crank 86 whereby the conveyers 91, 92 are oscillated between the full-line and chain-dotted line positions and batches of tubes are fed alternately to them from the conveyer 44. Feeding sheets.-The batches can be overlapped on an intermittently driven conveyer 51, 52, as shown in Fig. 6, to which they are transferred from a continuously driven conveyer 44 fed by the table 6. Fingers 54 carried by a shaft 57 reciprocated in a pair of guides 55, 56 by means of oscillating arms 60, 61 are moved forward so as to raise the rear end of the rearmost batch on the conveyer 51, 52 while the leading end of a batch 65 on the conveyer 44 is moved thereunder. The fingers are then moved back to the dotted line position in readiness for raising the rear end of the batch 65 when it has advanced on to the conveyer 51, 52. The tubes in the leading batch 45 on the conveyer 51, 52 are separated by a suction separator 46 and fed between feed rollers 47, 48 into the bottom-laying machine. Movement of the conveyer 51, 52 is controlled by a feeler 50 which initiates the drive when the leading batch is exhausted and discontinues it when the succeeding batch reaches the end position. As shown in Fig. 11, batches are deposited on an intermittently driven conveyer 128 by the table 6, the steps of movement of the conveyer being such as to effect the overlapped disposition of the batches shown. The batches are then transferred to an intermittently driven conveyer 130 which conveys them to the suction separator 46.