Patent GB-1143052-A (GB)
Title: Container handling apparatus
IPC: B65B43/44
Filed: 1967-01-27
Abstract: 1,143,052. Dispensing egg cartonsendless conveyers; egg-packaging machines. FMC CORP. 27 Jan., 1967 [3 Feb., 1966], No. 4051/67. Headings B8A, B8C and B8S. Egg cartons C (Fig. 2) are dropped one by one from stack 20 on to endless chain conveyer 21 the pushers 258 of which push the carton beneath egg delivering device 23. The carton is filled one row at a time and is indexed forward till it arrives at carton closing device 30 by which the carton is closed. The device is adapted to deal both with egg cartons and with egg flats and accordingly the conveyer is adapted to two different speeds and to two different indexing movements. Dispensing device 20 for cartons, Fig. 9.- The device includes three pairs of fingers 47, 48 and 49. In operation, fingers 47 are inserted into the penultimate carton C, and fingers 48 are moved inwards to engage the lowermost carton, the fingers 49 supporting the latter. In the second stage, fingers 48 and 49 are moved down together to displace downwards the lowermost carton C and are then moved outwards to release the carton on to the endless conveyer. In order to perform this separating movement fingers 47 and 48 are carried by a separate pivot housing 106. Fingers 49 carry supporting elements 110, 111 for use with egg flats and egg cartons respectively. Operation of dispensing device 20, Fig. 8.- The fingers 47, 48 and 49 are operated via levers from cams 79, 98 and 132 formed on cam 78. Pivotal housing 106 of device 20, Fig. 13.- The fingers 48 and 49 are carried by the pivotal housing 106 pivoted at 157 and the pivoting movement about 157 is effected by driven shaft 165 carried by said housing 106 in conjunction with arm 196 pivoted at 192. Arm 196 is provided with slot 201 and with rollers 205 and 206, and the shaft 165 is provided with a roller 202 and cam 210. Accordingly when shaft 165 is rotated the cam 210 bears against roller 206 to force the arm 196 downwards to pivot clockwise about 192 and since the roller 202 of shaft 165 is confined within slot 201 the housing 106 is likewise forced to pivot clockwise so that arms 48 and 49 move downwards to deliver the carton on to the conveyer 21. Indexing movement of endless conveyer 21, Figs. 3 and 31.-The movement is controlled by a single revolution clutch 268, Fig. 3, which is controlled by ratchets 274, 275, Fig. 31. Pawl 285 may engage either ratchet 274 or 275. If it engages 274 the conveyer makes a short movement followed by a longer movement. If it engages 275 the conveyer makes four short movements followed by a long movement. The change from one ratchet to another is effected by a movement of arm 301 about pivot 300 effected by the operator. The selection of ratchet having been made, the movement of pawl 285 from notch to notch is effected by solenoid 295 which moves arm 296 coupled to pawl 285. In this way the conveyer is adapted for either cartons or flats. Additionally, the driving shaft 265 of the conveyer may be driven either from large sprocket 317 via chain 315 or from small sprocket 318 via chain 316, shaft 323 being driven by chain 338 and the change from sprocket 318-317 is made by an axial movement along shaft 323 effected by handle 333. Carton closing device 30, Fig. 34. This is used for cartons not for flats. This is effected by a rotary and an upward movement of plate 350, and by an upward movement of lifter arms 351 and 352. Thus, the front and the back of the carton are lifted upwards into interlocking position, Fig. 35, not shown. Shaft 355 is driven to rotate cams 365, 366 and 367. Cam 365 is driven so as to drive shaft 371 via arm 370 and the oscillating movement of shaft 371 is transmitted to shaft 377 via sector 372, chain 375 and gear 376 so that cam 380 secured on shaft 377 displaces roller 381 to move the jaws 384 inwards to secure the carton. Cam 366 rotates so as to rotate blade 350 about its shaft 408 via bellcrank 400, levers 401, arm 402 pivoted at 403 and levers 405 and 407. Additionally cam 367 operates to oscillate shaft 412 via arm 418 and since blade 350 is carried by arms 410 secured to shaft 412 the effect of cam 367 is to move blade 350 and arms 410 upwards to engage the front panel of the egg carton. Additionally, cams 380 and 379 carry respective lifter fingers 351 and 352 to move them upwards and engage the rear of the carton. In this way the carton is gripped by jaws 384 whilst plate 350 and fingers 351 and 352 co-operate to close the carton.