Patent GB-1316824-A (GB)
Title: Automatic machine for cutting cooling drying and piling rubbersheets
IPC: B29B9/00
Filed: 1970-06-30
Abstract: 1316824 Feeding and delivering sheets SCHIESSER AG RUBBER & RAILROAD RESEARCH 30 June 1970 [30 June 1969] 31593/70 Heading B8R An automatic machine for cutting into short lengths, cooling, drying and stacking long rubber sheets delivered from a roller mill comprises an intake section, a spray and cooling section, and a receiving and stacking section, defined respectively by frames 1, Fig. 1; 2, 3, Fig. 5, comprising side beams joined by screw fastenings 4 and enclosed by casing components 5,6, 7 formingan open-endedtunnel. The intake section comprises a platform 11 pivoted at 12 and when inoperative assuming a vertical position within the frame 1, being moved for operation by an air piston 23 into a sloping position against a conveyer belt 8 driven by an electric motor 38. Each sheet from the roller mill is delivered to the belt 8 and fed over the platform beneath a pressure roller 26, under a roller 29, actuated by a piston 32, which stamps it with a marking, and underneath a sensing roller 35 which is raised by the sheet and operates a pre-set length measuring device. The sheet then passes a roller 41 carrying a knife 42 which cuts the sheet into shorter sheet parts A each time the roller 41 is rotated under control of the measuring device when a required length of sheet has been fed. The spray and cooling section comprises chain conveyers 45, Figs. 1, 3 and 5, intermittently advanced by a motor 52 under control of the measuring device. The conveyers 45 carry spaced carriers 54 each pair of which supports a transport rod 55. Each cut part A is draped over a rod 55 and held thereon by a roller 71. The loaded rods 55 are moved past sprinkler tubes 76 supplied with liquid from a tank 72, which is caught in a basin 77 and flows to a container 78 from where it is returned to the tank 72 by a pump 80 controlled by a float 79. The rods then pass through a cooling chamber having ventilators 83, 84, 85. After the carriers pass chain sprockets 48, the rods 55 are removed therefrom by rails 56, and the front rod comes to rest in notches 56a in the rails. The receiving and stacking section comprises chain conveyers 57 driven intermittently by a motor 64 under the control of the measuring device and carrying two pairs of hooks 57a. The front rod is engaged by the hooks and carried to a position adjacent chain sprockets 59. A boom 92 supports an arm 93 on which a cylinder 94 is reciprocated by means of a continuously driven chain 97 through a device 101. The cylinder supports a plate 107 carrying a plurality of gripper tongs 104 opened and closed under the control of two cylinders 105<SP>1</SP> actuated by contact with the rod 55 and a stop 106, in such a way that the part A is gripped by the tongs near its folded edge, withdrawn from the rod, carried over a pallet 91, and released and dropped thereon. The pallet is supported on a platform 88, which is rotated through 180 degrees after securing each part A under the control of a switch 107 actuated by the device 101. When the stack interrupts a beam from a light source 108 to a photo-electric cell, a piston-cylinder assembly 87 is actuated to lower the platform 88 by one step. The rods 55 are returned to their receiving position by the conveyers 45 and a guide plate 68.