Abstract:
A control method for a cutting blade, particularly for cutting-off machines for logs of web material, interrupts operation of the cutting blade when deformation of the blade reaches a preset deformation value and resumes operation of the cutting blade when the deformation of the blade is less than another preset deformation value. The control method measures deformation values of at least a portion of the cutting blade, compares the measured deformation values with at least one preset deformation value set by an operator, and sends, according to signals coming from the result of the comparison, control signals to a motor of the machine to control the start up and/or the stop of the motor.
Abstract:
Elongated product is cut while the product moves longitudinally by a cutting blade which passes through the product and which also moves longitudinally with the product. The product is supported by first and second product supports which are spaced apart in the longitudinal direction to provide a gap through which the cutting blade passes. The product supports are mounted for movement in the longitudinal direction and move longitudinally as the cutting blade passes through the gap.
Abstract:
A control device for a cutting blade, particularly for cutting-off machines for logs of web material, interrupts operation of the cutting blade when deformation of the blade reaches a preset deformation value and resumes operation of the cutting blade when the deformation of the blade is less than another preset deformation value. The control device includes a measuring device for measuring deformation values of at least a portion of the cutting blade, at least one comparator for comparing the measured deformation values with at least one preset deformation value set by an operator, and an actuator which sends, according to signals coming from the comparator, control signals to a motor of the machine to control the start up and/or the stop of the motor.
Abstract:
A stack of folded sheets comprises first and second groups of folded sheets. Each of the sheets of each group includes a center panel, a second panel, and a V-shaped portion including third and fourth panels. The sheets of the two groups are alternately arranged so that the second panel of each sheet of each group is adjacent a fourth panel of a sheet of the other group. The adjacent second and fourth panels may or may not be interleaved.Adjustable folding boards are provided for folding elongated webs into the first and second folded sheets. Each of the folding boards includes a slidably mounted first plate which folds the fourth panel of the folded sheet. A second plate extends downwardly from the first plate and is also slidably mounted for movement transversely to the web. Third and fourth plates are mounted in front of the second plate.Adjusting the first and second plates relative to the web changes the width of the fourth panel. Adjusting the third panel relative to the web changes the widths of the central panel and the third panel. Adjusting the fourth plate relative to the web changes the widths of the central panel and the second panel.
Abstract:
A wrapping machine for wrapping products is provided with a product diverter for producing package formats which are greater in width than the number of lanes which deliver product to the wrapper machine. A plurality of metering belts advance product from an infeed conveyor along a plurality of infeed lanes. The metering belts are independently driven so that product can be advanced in each lane independently of the product in the other lanes. The metering belts deliver product to accelerator belts which speed up the product to create a gap between successive products in a lane. A first flighted conveyor advances product from the accelerator belts to a plurality of pivotally mounted diverting gates, corresponding in number to the number of infeed lanes. Each of the diverting gates direct the product to one of a plurality of output lanes. The number of output lanes is equal to, less than, or greater than the number of infeed lanes. The diverting gates are independently controlled so that each diverting gate can be pivoted independently of the other gates. A second flighted conveyor advances product from the discharge end of the diverter gates along the output lanes.
Abstract:
A robotic apparatus for a printing press transports components between the press and a staging or make-ready area so that components can be prepared for a new press run off-line from the press. The robotic apparatus includes a pair of lifting assemblies which are movable horizontally between the press and a support frame in the make-ready area. Each of the lifting assemblies includes a vertically movable lift mechanism, and each lift mechanism includes a plurality of lifting cups for engaging the ends of the components of the press which are to moved. The lifting cups can be operated independently, so that desired components can be moved from any printing deck to any position on the support frame. The press components which can be moved include a plate cylinder and a carriage assembly. The carriage assembly includes a frame, an anilox roll assembly mounted in the frame, and an ink container mounted on the frame.
Abstract:
An apparatus for feeding, stacking, and/or upending products includes a pair of indexing star wheels. A conveyor advances a row of products toward an upstream star wheel. One or more products are metered into one of the notches in the upstream star wheel, and the upstream star wheel indexes to transfer the products to the downstream star wheel. The upstream star wheel can stack products by indexing twice before the downstream star wheel indexes. The downstream star wheel indexes to upend the products, and the upended products are moved away from the downstream star wheel.
Abstract:
A method and apparatus for handling logs of convolutely wound webs which includes providing a rewinder-tail sealer wherein a glue stripe is applied to a predetermined circumferential location on a partially unwound log and the log rewound by rolling on itself toward and into a pair of spaced-apart rollers, providing a path from the roller pair to log receiver wherein logs sequentially roll in the path, the path having fixed dimensions, operating the rewinder-tail sealer to develop logs of a first nominal diameter to enable the roller pair to controllably rotate each log for positioning the glue stripe at a first angular orientation, which in combination with the fixed dimensioned path enables each log to be received in the receiver with its glue stripe in a second angular orientation, changing the operation of the rewinder to develop logs of a second nominal diameter, and by correlating the second nominal diameter with the fixed dimensioned path to enable each second nominal diameter log to be received in said receiver with its glue stripe in the second angular orientation and adjusting the spacing between the roller pair to be slightly less than the second nominal diameter.
Abstract:
A method and apparatus for sealing the tail of a convolutely wound log which includes the steps of providing a turret rotatably mounted in a frame and having a plurality of circumferentially spaced apart three-roll clusters, feeding a log into a first cluster while positioning an immediately previously fed log with a draped tail in another cluster adjacent glue apparatus and while ejecting an even earlier fed log now rewound from still another cluster, and providing a log infeed mechanism adjacent the turret and including a pair of relatively movable rollers, feeding logs sequentially into the pair of said rollers, rotating the infeed rollers to orient the log tail in a predetermined position, by providing a mark on said log prior to the feeding step, and detecting said mark to orient the tail in a predetermined position.
Abstract:
An apparatus and method for producing zipper closure bags from a continuous tube which includes advancing the tube along a continuous path for travel with a rotating metering roll, the metering roll having circumferentially spaced apart ports corresponding to a bag width, and a receiving conveyor having vacuum port-equipped sealing bars for receipt of the tube from the metering roll and for providing across seals defining adjacent paths.