| 摘要 |
970,108. Box making machines. CALEDEX MACHINE CO. Ltd., and A. H. WILLIAMS. Jan. 6, 1961 [Dec. 28, 1959], No. 43980/59. Heading B5D. [Also in Division B8] Apparatus comprising conveyer means and transfer means which presents a stayed box and a gummed blank therefor to a wrapping-machine is made as a self-contained unit so that it can be used with a number of different wrapping machines. A gummed blank W has a box B placed thereon by hand or automatically at station S1, a conveyer 11 comprising a perforated belt on which the box assembly is held by suction carries the assembly to an intermediate station S2 and subsequently to a transfer station S3 where jaws 63, 64 hold the box assembly by suction and present it beyond the end of the belt to a position beneath the ram of the wrapping machine 16. The jaws 63, 64 are adjustable to accommodate boxes of various sizes. The machine 16 has a rotating shaft 43 carrying cams 44-47 which trip switches LS3 -LS6 in the electrical circuits controlling the various movements of the apparatus. To commence the cycle, an arm 230 drops on completion of the previous cycle and closes a switch LS1 (Fig. 1), a motor 42 on the wrapping machine is started and shaft 43 rotates and a clutch thereby operated by cam 45 so that a cam-shaft 15b (Fig. 13) rotates. A cam 15c on shaft 15b operates the wrapper feed means 15f via link 16e so that a wrapper is fed to a gumming roller 15a and on to the conveyer 11. Next, the cam 47 operates switch LS6 whereby a solenoid 129 causes a clutch 24-26 to connect crank mechanism 21-23 (Fig. 3) to a motor 17 whereby the jaws 63, 64 are returned from beneath the wrapping machine ram to grip the box assembly. Rotation of shaft 20 on which the crank mechanism is mounted also causes a cam 34 to rotate and lower stops 40a behind an advanced box. The crank mechanism is then de-clutched. A peg 25a now operates a switch LS2 whereby an air valve is changed over and suction applied to the jaws 63, 64. Cam 45 again trips switch LS4 on next operation of the wrapping machine to commence another cycle and also to re-engage clutch 24-26 whereby the crank mechanism makes the second half of its revolution and the jaws 63, 64 present the box assembly beneath the wrapping machine. A dwell occurs while the wrapping machine operates. A foot pedal may control starting of the wrapping machine or control the conveyer and transfer apparatus. |
