GB1168502A - Transfer Device for Woodworking Machines - Google Patents

Abstract

1,168,502. Conveyers for timber. THOMAS ROBINSON & SON Ltd., and R. H. BUCKLEY. 25 March, 1968 [17 March, 1967], No. 12632/67. Heading B8A. In a timber transfer device used, for example, between a longitudinally-fed moulder and a tenoning and boring machine, timber lengths 19 from the moulder (not shown) pass through a tiering device 20 and, after actuating switches 28, drop on to a driven rollerway 14, 15. The switches cause dogged chains 29 to move in a direction 34 so that a timber length, now at position 100, moves laterally out of the path of the next successive timber length, as well as longitudinally towards a fair-ending fence 25 having a gate section 38. In normal operation, each timber length, on abutting the fence 25, is carried by a multi-belt conveyer 44 to a pick-up station provided with switch-operating members 48. The pick-up station includes pick-up arms 58, 59, the arm 59 being adjustable along a shaft 51 according to the longitudinal dimensions of the timber lengths. For gripping the lengths one of a pair of grip plates 64 is movable axially by a ram 65. Upon arrival at the pick-up station a timber length actuates the associated switches 45, 48 the length is gripped and, by means of a ram 80 whose operation is initiated by a dogged-chain conveyer 49, the pick-up arms 58, 59 are rotated through 180 degrees and the timber length deposited on the conveyer 49. The pick-up arms then return, through 180 degrees to their original position. An adjustable lost motion cam 81 permits the timber length, during its transfer in the arms 58, 59, to be turned over as necessary, to ensure that any desired face thereof is uppermost. The conveyer 49 may feed a double-ended tenoning cut-off and boring machine (not shown). If there is a build up of timber lengths in front of the pick-up device, a series of switches 41, if simultaneously actuated by the lengths for a continuous period, cause the gate section 38 of the fence 25 to swing to its inoperative position and excess-lengths such as the length 50 are withdrawn by escape rollers 42, 43 to a receiver or a second transfer device. The illustrated device is supported on wheels 12 and rails 13 and may be locked in position.