Abstract:
This is a rotary sheet material cutter and creaser, particularly intended for cutting and creasing cartons out of rolls of sheet cardboard. It includes a rotary cutting and creasing die geared together with a rotary anvil and particularly provided as an attachment for or end part of a carton-printing printing press, which printing press is conventional, and which may be multi-color.The cutter and creaser of this device is synchronized with the printing press by having its gearing geared to the printing press gearing in a conventional manner, and may be provided in gangs for operation on a wide roll of material, thus providing a multiplicity of cut-out cartons simultaneously. The sheet material is fed through the conventional printing press in a conventional manner from a roll, then through this device to cut out and crease the folds of the carton blank.As thus completed, the blanks are deposited in a collecting station, and the waste from which the blanks are cut is then collected in a waste roll for disposal.
Abstract:
Apparatus such as a paperboard printer slotter is provided with a device to quickly reposition a slotter knife by moving the same in a circumferential direction with respect to an annular head which supports the same. During such positioning of the slotter knife, it is held stationary while the annular support head is rotated. This slotter knife is releaseably mounted on its head and a means is provided to selectively release the lock when it is desired to reposition the knife.
Abstract:
Rigid packets of the type with a hinged lid are fashioned from diecut blanks presenting a central longitudinal portion flanked by two lateral portions, each consisting in a series of longitudinally disposed flaps. The method of manufacture involves directing the blanks singly and in succession between a pair of contrarotating rollers with dies shaped and positioned to engage each lateral portion; the dies are designed to modify a pair of adjoining flaps on each side, which ultimately will be bent through a right angle to form an internal layer of the relative flank face of the packet, by producing at least one bend in one flap at an end adjacent to the other flap, and forming a projection on the longer flap which in the finished packet will be breasted permanently in contact with an inner reinforcing frame.
Abstract:
A strip steel punching and indenting tool (15) and a method for preparing this type of tool wherein the tool, arranged between a ram (12) and an anvil (14) of a punching machine (10), comprises a supporting plate (16) with slots (18) extending from the lower side of the supporting plate facing the anvil (14) to its upper side facing the ram (12). Each of the slots (18) accommodates a cutter of strip steel for punching (20a, 20b) and indenting (20c), in such a way that the hardened cutting edge (22) of a cutter protrudes from the lower side of the supporting plate (16) and the rounded non-cutting backs (24) thereof face a first intermediate plate (26) of metal mounted on the upper side of the supporting plate. To be able to prepare the punching and indenting tool within a short period of time without impairing the punching performance of the punching machine, the first intermediate plate (26) is between 0.8 and 1.5 mm thick, consists of a metal with a 0.2-tensile yield strength R.sub.p0.2 of 20 to 90 N/mm.sup.2, has a tensile strength R.sub.m of 65 to 150 N/mm.sup.2 and a breaking elongation .delta. of 3 to 35%. For preparation there is mounted on the first intermediate plate (26) an elastomer plate (28) which is 0.5 to 1.5 mm thick with a hardness of 60 to 100 Shore A and which is replaced by a second metal intermediate plate during normal operation of the punching machine.
Abstract:
A safety fringe is formed around the edge of paper products in order to reduce the likelihood of people receiving cuts. A softened and weakened fringe is formed by pressing a hard-surfaced mechanical member against a narrow strip near the edge of the paper. Many commonly-available machine parts are suitable for this purpose. A safety fringe can be formed at the mill or at any other stage in the processing or handling of paper.
Abstract:
A cut and score die apparatus is provided for progressively converting a sheet of material into blanks. The apparatus includes a punching section for punching scrap material from the sheet of material to define an array of interconnected blanks arranged in a grid of rows and columns on the sheet of material. A scoring section is provided for simultaneously scoring a first predetermined pattern on a trailing portion of a first row of blanks and a second predetermined pattern on the leading portion of a second, succeeding row of blanks on the sheet of material. A blanking section is also provided for piercing the sheet of material in a predetermined pattern to cut blanks from the sheet of material without producing any additional scrap material.
Abstract:
The notching device effects transverse cuts in strip wrapping material, and in particular, along the length of a continuous strip of transparent outer wrapping material incorporating a longitudinal tear-open ribbon, which is severed with each cut. Use is made of an incision roller fitted with at least one peripheral blade, and a pressure roller mounted rotatably to a shaft having two distinct, coaxial end sections that are carried by a support in such a way as to permit adjustment of their angular position; the shaft also has an intermediate section which is embodied skew in relation to the two end sections, and it is to this skew section that the pressure roller is mounted.
Abstract:
Apparatus for processing a sheet of material such as cardboard intended for making a folding box or case, comprises a stamping plate for carrying the sheet and co-operable with a tool. The stamping plate lies on a table plate of a frame structure which has holders for releasably carrying a form which extends parallel to the table plate, and at least one bridge assembly which extends movably above the table plate. A carriage is carried on the bridge assembly and moves transversely with respect to the direction of travel thereof. The carriage carries at least one vertically movable pressure member directed towards the table plate.
Abstract:
A cutting device for a cutting machine for use in the corrugated box industry is disclosed. Cooperating rollers or heads are positioned on opposed rotatable shafts. The heads are disposed for cutting or scoring material passed through the heads. A hub assembly is connected to each of the heads for releasably securing the heads to the shaft. The hub assembly is resiliently biased in a manner to secure the rollers on the shaft. A rotatable cam is positioned adjacent the hub assembly. The rotatable cam is rotatable to engage and move the hub assembly in a manner whereby the hub assembly disengages from the shaft and allows the heads to be moved along the shaft to a new position.
Abstract:
Blanks (10) for producing folding boxes, etc., are severed from an advancing sheet (11), conveyed continuously, at a constant speed by first drawing rollers specifically by partial severing cuts (cutting lines 33, 34) supplementing one another and made in successive work cycles. The blanks (10) are severed from the sheet (11), with the exception of residual connections (35), and are separated completely from the sheet (11) by tearing as a result of a higher speed of additional drawing roller located downstream of the first rollers.