Patent GB-1382729-A (GB)
Title: Slitterscorer apparatus
IPC: B26D1/00
Filed: 1972-12-22
Abstract: 1382729 Slitting and scoring apparatus RENGO CO Ltd 22 Dec 1972 [25 Feb 1972 5 April 1972] 59505/72 Heading B4B A slitting and scoring apparatus for elongate material 7 comprises a rotary shear 1, Fig. 1, for cutting the material transversely to the direction of travel of the material, an upper and a lower slitter-scorer unit 2 downstream of the rotary shear, guide means 501 for guiding the material from the rotary shear to either one of the slitter-scorer units or to an opening between the units and rear guide means 601 for guiding  the material away from either one of the slitterscorer units or from the opening therebetween. The rotary shear 1 comprises an upper roll 14, Figs. 2 and 3, provided with a blade having angular projecting cutting edges and a lower roll 15 having a back-up member 151 thereon made, e.g. of hard rubber. The roller 14 is rotatably mounted in arms 13 which are pivotably mounted in the side frames 11, 12 of the shear, the lower roll 15 being rotatably mounted directly in the side frames. The rolls are rotated by an electric motor 192 via a variablespeed gear unit 19, gears 161, 162, 163, 164 and a chain-and-sprocket drive 171, 172, 173; the rolls may be "inched" round manually by means of handwheel 197. The upper roll 14 is raised and lowered in order to bring the blade into or out of contact with the anvil by means of a pair of pneumatic cylinders 185 acting through pivoted links 182, 183. Each slitter-scorer unit 2 comprises slitting rolls 221, 222 on which are mounted co-operating cutting discs 2211 and 2221 respectively and scoring rolls 223, 224 on which are mounted co-operating scoring tools 2231 and 2241 respectively. The upper rolls 221 and 223 are rotatably and eccentrically mounted in bearing housings 23 which are rotatable in side plates 21 and the lower rolls 222, 226 are rotatably mounted in bearing housings 24 fixed in the side plates. The eccentricallymounted bearing housings are provided with gear 261 meshing with gears 264, Fig. 5.; the gears 264 are engaged with worm gears 265. In order to bring the cutting discs 221 and scoring tools 2231 out of contact with the cooperating cutting and scoring members 2221 and 2241 respectively, the worm gears are rotated by means of shafts 267. The co-operating cutting and scoring rolls are rotated by an electric motor 30 via gears as shown in Figs. 4 and 6. As shown in Figs. 8 and 9, a pair of cutting and scoring units 2 are mounted in a frame structure 31, 32, 325 which is movably mounted on rails 331 via wheels 311. The units are each provided with rollers 214 and gears 215, Fig. 6, for respective engagement with racks 324 and the frame structure. The upper unit is raised and lowered by means of an electric motor 43 driving through a gear-box 38, shaft 39 and lead screws 36 connected to the frame of the upper unit by means of releasable pawls 35; the lower limit of movement of the upper unit is determined by stops 44 and the upper limit by switches APS 14. The lower unit is raised and lowered by means of hydraulic rams 45, the upper and lower limits being determined by the stops 44 and a switch APS 16. The frame structure is movable laterally on the wheels 311 by means of an hydraulic ram (34), Fig. 9 (not shown), in order to compensate for misalignment in the travel of the material. The material 7 is delivered to either the upper or lower units via a guide unit 501 comprising guide plates 52, 53 or between the units through an opening determined by the stops 44, by means of a guide plate 51. The material is directed to one or other of the guide plates by means of a plate 54 which can be rocked to the desired position by means of a pneumatic ram 542. The material can, additionally, be directed to either of the guide plates 51, 52 by means of a further pivotable plate 523 actuated by a pneumatic ram 524. The material is delivered from either of the units 2 by means of guide plates 61, 62, 63 and then directed to a further cut-off machine 9 by means of pivotable guide plates 641, 642 actuated by respective pneumatic rams 643, 644. In the alternative embodiment shown in Fig. 21, a pair of slitter-scorer units 2 are mounted in a similar frame to that previously described except that the stops 44 are dispensed with, the upper unit being arranged to rest directly on the lower unit. The upper unit can be connected to the lower unit by means of releasable pawls (47), Fig. 22 (not shown), so that by lowering the lead screws 36 and connecting the latter to the upper unit by the pawls 35, both units may be raised together by operation of the motor 43. Alternatively, with both units in the raised position, the pawls 47 may be disengaged and the lower unit lowered by actuating rams 49. A gap or opening is thereby provided between the units so that the cut-off material may be fed therethrough without being operated on by the slitter-scorer units. Hydraulic pneumatic and electrical circuits are described for controlling the operation of the various motors and rams in correct sequence such that the material may be fed as required to one or other of the slitter-scorer units or between such units for non-operation on the material.