Other

Bernal Rotary Systems, Inc.

Albert J Sarka

Jerry L Bell

A method and apparatus for piling a plurality of cut blanks of a flexible material in overlapped and shingled or stacked relationship. After being cut each blank is accelerated to increase its lineal speed to thereby produce a gap between the blank and an immediately succeeding blank. After acceleration, each blank is deflected, preferably by a plate, away from and out of its accelerated path of travel toward an underlying receiving surface such as a conveyor or platform. After being deflected, the trailing portion of each blank is displaced preferably by rotating cams so that when rapidly decelerated, an immediately succeeding blank passes into and is deposited in overlapping relationship with such blank. To deposit the blanks is stacked relationship with their leading edges substantially aligned, they are decelerated from their forward travel to a complete stop preferably by striking a positive stop. To deposit the blanks in shingled relationship with their leading edges spaced apart, they are rapidly decelerated to a relatively slow speed at which they continue to be advanced in their path of travel, preferably by a conveyor on which they are received.

Web cut blank piling method and apparatus

A piece of material cut from a web is removed by a stripper mechanism which is preferably embodied in a pair of die cylinders having coacting cutting blades which cut pieces from a web of material passing between the cylinders. As the cylinders rotate, a piece to be removed is releasably secured to one of the cylinders for rotation therewith, the secured piece is pivoted to lift its leading edge from the die by coaction with a finger on the other die which bears on a trailing portion of the piece. After the piece is carried away by the one die, it is removed by cooperation with a stripper plate which passes between the raised leading edge of the piece and the die and releases and removes the piece from the die.

Rotary stripper

There is disclosed a method and apparatus for accurately attaching a die plate to a cylinder segment in a manner that assures accurate registration of two die plates so attached to cylinder segments used in a cutting and creasing machine to cut or crease material passing through a nip formed therebetween. Pins on the arbor in the cutting and creasing machine accurately locate the cylinder segments. A 'Make Ready Machine' is used to accurately locate each die plate on a cylinder segment. The 'Make Ready Machine' includes axial and circumferential position indicators which are used to accurately place each cylinder segment in a predetermined position when it is mounted in the Make Ready Machine. Once the cylinder segment is in the predetermined position, the die plate is placed on the cylinder segment and moved until each of three lands on the die plate are in proper alignment with a view finder on the Make Ready Machine. The lands are formed on the die plate in a predetermined relationship with the lands which do the cutting and creasing. When the die plate is thus accurately located on the cylinder segment it is riveted in place, and any excess extending beyond the axial edges of the cylinder segment is removed. The cylinder segment with the die plate thus connected may then be placed in a cutting and creasing machine. When a second die plate is mounted to a second cylinder segment in the same manner, it may be mounted in a cutting and creasing machine to cooperate with the first die plate. Accurate registration of the die plates is assured because each is mounted in a predetermined position on a cylinder segment and each cylinder segment is in turn mounted in a predetermined position on the cutting and creasing machine.

Method for attaching die plates to cylinder segments

The disclosure relates to a method of making a pair of die plates having raised lands which cooperate to cut or crease material pressed between them. A line drawing of the desired pattern of cuts and creases is converted to coded information which is fed to the memory of an automatic machine tool. The automatic machine tool then produces a master image of the pattern of cuts and creases by selectively removing an opaque layer from a light transmitting substrate. The width of the lines on the master image are controlled according to whether cuts or creases are to be made, the height of the lands to be formed and the chemical properties of the material of which the die plates are to be formed. The master image is used to control chemical etching of the die plates, and thereafter the automatic machine tool, controlled by the same coded information, forms the desired profile for the lands. In addition, special machining is performed where cutting lands intersect each other.

Method of making die plates

A pair of cylinder arbors have a plurality of arcuate cylinder segments extending circumferentially around a portion of the arbor. The segments are adjustable relative to the arbors in a circumferential direction. Each of the segments has a respective cutting and/or scoring die plate secured thereto. The die plates are relatively thin plates having lands formed thereon which cooperate with lands formed on the die plates on the other arbor to cut material moving through a nip defined by the segments. The material is cut by the lands into carton blanks for example, and broke. The broke is suitably separated from the carton blanks. The segments on one of the cylinder arbors carries a movable broke removing mechanism which includes pins which engage the broke. The pins extend through openings in the segments and die plates thereon and are actuated by an axially movable cam bar which is situated from a suitable cam. Further, a mechanism adjusts the cylinder arbors toward and away from each other for various carton blank print lengths. The segments which are positioned on the arbors are changed also for different print lengths. Specifically, different radial thickness segments are mounted on the arbors. Further, the apparatus is provided with an on-the-run adjustment mechanism for adjusting the radial dimension between the dies at the cutting nip.

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Fairview Park, OH, United States of America

Albert J Sarka