Abstract: A semiconductor wafer saw and method of using the same for dicing semiconductor wafers comprising a wafer saw including variable lateral indexing capabilities and multiple blades. The wafer saw, because of its variable indexing capabilities, can dice wafers having a plurality of differently sized semiconductor devices thereon into their respective discrete components. In addition, the wafer saw with its multiple blades, some of which may be independently laterally or vertically movable relative to other blades, can more efficiently dice silicon wafers into individual semiconductor devices.

Abstract: A device for shortening translucent double-walled plate material (20) which shortens the plate material with a substantially rectilinear cut. The plate material comprises two basically parallel synthetic plates (21, 22) which are separated from each other at a basically constant distance by a number of parallel dividing walls, enclosing a number of elongated channels (24). To avoid too much pressure on the plate material, when it is shortened, and to avoid too large an amount of chips and too much electrostatic charging of the plate material the device comprises two rotating knives (4, 5) to work into the plate material (20) from both sides. The rotating knives in accordance with the invention, have been placed slantwise behind each other and their combined penetration equals at least the thickness of the plate material (20) ensuring a complete cut through the plate material.

Abstract: A semiconductor wafer saw and method of using the same for dicing semiconductor wafers comprising a wafer saw including variable lateral indexing capabilities and multiple blades. The wafer saw, because of its variable indexing capabilities, can dice wafers having a plurality of differently sized semiconductor devices thereon into their respective discrete components. In addition, the wafer saw with its multiple blades, some of which may be independently laterally or vertically movable relative to other blades, can more efficiently dice silicon wafers into individual semiconductor devices.

Abstract: A method is described for changing between jobs in a device for slitting a web (N) into a plurality of lengthwise strips (L1, L3, L5, L1', L3', L5') with two series of slitting tools (25, 25B). At the moment of the job changeover, the tools of a first series are moved from a slitting position to an inactive position and the tools of the second series are moved from an inactive position to a slitting position. The passage from one position to the other is delayed for one of the tools of each series in order to generate two slit lines (L3', L5) extending into the job changeover zone (CA), and these lines are subsequently joined up by a transverse slit (L9). (FIG.

Abstract: An apparatus for trimming the edges of a fabric panel. The apparatus includes a holding fixture for holding the panel such that the edges to be trimmed hang freely in the holding fixture. A trimming apparatus is insertable into the holding fixture for trimming the edges of the panels together while the panels are held in the holding fixture. The trimming apparatus includes a frame having a movable slide and at least one trimming assembly attached to the slide. A fixture drive engages the holding fixture holding the edges of the panels to be trimmed and repositions the holding fixture prior to trimming the edges of the panel.

Abstract: A semiconductor wafer saw and method of using the same for dicing semiconductor wafers comprising a wafer saw including variable lateral indexing capabilities and multiple blades. The wafer saw, because of its variable indexing capabilities, can dice wafers having a plurality of differently sized semiconductor devices thereon into their respective discrete components. In addition, the wafer saw with its multiple blades, some of which may be independently laterally or vertically movable relative to other blades, can more efficiently dice silicon wafers into individual semiconductor devices.

Abstract: A method and apparatus for cutting sheet material upon an apertured support surface, the apparatus including a pair of spaced apart parallel cutters. The cutters are spaced apart by a distance greater than a dimension of the apertures, but less than an inter aperture distance so that at least one of the cutters remains in cutting contact with the support surface when the remaining cutter passes over an aperture. The method includes selectively overcutting and undercutting the line segments at an intersection to ensure continuity of cut paths of both cutters.

Abstract: A base mount supports a secondary mount in surface facing relation and a pair of these mount assemblies are positioned in spaced relation to receive a pallet stringer between them. The mounts support circular cutter discs which are disposed in axially aligned pairs and also in laterally aligned pairs whereby to be capable of severing nails on opposite edges of a stringer in a single pass of a stringer through the space between the laterally spaced mounts. The base mounts support the secondary mounts and are capable of being retrofitted to existing machines. The base and secondary mounts are secured by cross plates that have a cutting edge to form a backup cutter for the cutter discs. The secondary mounts are hingedly supported on the base mounts by a cross hinge at the rear of the mounts and a spring and limit assembly is provided between the mounts to allow adjustment of the mounts for different dimensioned stringers.

Abstract: When a material having two straight lines is cut into a plurality of series of strips along a plurality of predetermined curves, one series of strips is in direct contact with another adjacent series of strips.

Abstract: A rotatable cylinder to which is secured a unitary sleeve having cutting lands for cutting and creasing sheet material such as paper and cardboard. The sleeve is secured to the cylinder to prevent relative movement during the cutting process.

Abstract: A circular saw shaft for cutting wood comprises a motor-driven shaft and a ircular saw blade mounted on the shaft. A support disk is mounted on the shaft in spaced relationship to the saw blade to apply to the wood a supporting force in a direction extending parallel to the axis of rotation of the shaft. The support disk can be fixed to the shaft, or biased along the shaft axis by springs. In lieu of springs, the support disk could be elastically flexible.

Abstract: A web of paper, cardboard, foil or textile material is pulled against and between two rotary knives which sever the web longitudinally and form a slot as well as dust. Such dust is removed by a pneumatic mechanism having one or more nozzles which discharge one or more streams of compressed ionized air against the upper side of the web in the region of the slot, and a suction chamber disposed beneath the path for the web, extending across the slot beneath the nozzle or nozzles, and having one or more suction ports which enable the chamber to collect the particles of dust. The port or ports further enable the chamber to collect those fragments of the web which adhere to the separated sections of the web in the region of the slot between such sections.

Abstract: A rotary knife assembly includes a rotary shaft, a flange, a rotary knife of an annular shape and a resilient member. The flange includes a radially-outwardly protruding flange portion having opposite end faces and a reduced diameter portion disposed adjacent to the flange portion. The rotary knife has opposite faces and is fitted on the reduced-diameter portion of the flange with one of the opposite faces directed toward one of the opposite end faces of the flange portion. The resilient member is mounted on the flange for urging the rotary knife toward the flange portion. There is also provided a shifting mechanism mounted on the flange for shifting the rotary knife in a direction away from the flange portion against the urging force of the resilient member.

Abstract: A method of cutting blanks from an elastic paper comprises the following steps: removing a single elastic paper web of indefinite length from a mother roll; longitudinally cutting the single web, as it runs off the mother roll, into a plurality of paper panels; guiding the running paper panels in pairs into a superposed, face-to-face relationship to form at least one running superposed paper panel pair; guiding the running paper panel pair between cooperating cutting rollers of a rotary cutter and cutting the blanks from the running paper panel pair by the cutting rollers alternatingly from opposite sides of the paper panel pair while countersupporting the paper panel pair by the momentarily non-cutting cutting roller.

Abstract: An apparatus for removing the bead wires from a scrap tire having a pair of overlapping and counterrotating shearing members mounted on a movable carriage. The carriage provides reciprocating motion to the shearing members between two shearing work stations. While shearing action takes place at a first work station a scrap tire is fed into the adjacent work station, whereafter the bead wires of the scrap tire are first elongated and then compressed into overlying adjacent positions. Advancement of the shearing members into the tire produces a first tire shear that is at least closely tangential to the bead wires. When the pinch point of the shearing members is proximate the bead wires forward movement of the carriage is ceased. However, the tire is caused to rotate about its axis by the shearing members to produce a second shear that is substantially concentric with the bead wires, the first and second shears being a single continuous motion.

Abstract: A device separates attached multiple printed circuit boards without damaging solder connections and delicate surface mounted components attached to the boards. The device comprises a pair of disc cutters positioned in opposed alignment and minimally spaced apart for providing a bifurcated cutting edge through which commonly attached sections of the printed circuit boards are conveyed while supported by a transporter. The contact pressure on the boards is limited to the commonly attached sections as they are engaged and conveyed by the cutting edge. Minimal stress and vibrations are imparted to the boards and therefore the components connected thereon with this device. The boards are thus separated while avoiding damage to the solder connections or the surface mounted components.

Abstract: A slitter scorer including a pair of rotating shafts and roll heads fixedly mounted opposite to each other on said rotating shafts, thereby working a sheet carried between said roll heads, comprises plurality of pairs of head holding shafts having the same diameter as that of said pair of rotating shafts and capable of being disposed on an extension of an end of said pair of rotating shafts concentrically to said pair of rotating shafts, head exchanging means for exchanging said plurality of pairs of head holding shafts, roll heads held to said head holding shafts and means for moving said roll heads axially, whereby said roll heads on the rotating shafts and said roll heads on said head holding shafts are exchanged by slidably moving said rotating shafts and said head holding shafts.

Abstract: A slim knife unit includes a guide member having an L-shaped body which supports an elongated fluid actuator comprising a piston connected by piston rods to a base member having a sliding track connection to a removable knife holder. The knife holder has spaced walls defining a slot which receives a circular knife supported by a bearing mounted on a spacer bushing clamped between the walls by a center support screw. The guide member has a linear track which cooperates with the rods to guide the knife holder, and a releasable latch secures the knife holder to the base member. The guide member also has a linear track which guides a clamp member movable by a screw for securing the knife unit to a support bar.

Abstract: A cutter for sheet materials such as plasterboard and the like which employs a pair of axially spaced, copolanar circular blades with circumferential edges in adjacent noncontacting relationship. Both blades are driven but under conditions such that an edge speed differential exists between the blades. Supported sheet material is passed between the nip region between the blades to effectuate cutting. During cutting, the sheet material is self-propelled through the nip region by the action of the blades. Very little dust is produced during such sheet cutting.

Abstract: Die-cutting roll assemblies are provided which utilize a shaftless die roll. In certain embodiments, stability in the press is provided by an assist adaptor which has flanged bearings that cooperatively support the die roll laterally and transversely. In other embodiments, the roll is supported in a frame that has removable centers, which permit the use of rolls of various lengths in the assembly.

Abstract: An apparatus for the longitudinal cutting into stripes of a tape of sheet material fed to be forwarded continuously while it is pinched between a blade and a counter-blade; said blade is a circular disc idly pivoted on a first supporting structure and said counter-blade is a ball supported to turn about its own center by a second supporting structure.

Abstract: A sheet metal slitter of the type having a pair of parallel shafts journalled at spaced axial points and a slitter roll on each shaft, the rolls cooperatively defining a cutting nip. The invention resides in a bearing assembly with bearings cantilevered from a support element. The bearings are positioned, respectively, adjacent the pair of slitter rolls on the shafts to resist forces tending to separate the shafts during metal cutting. The support element is slotted to accommodate the cut portions of the workpiece without spreading or tearing and with substantially no bending.

Abstract: A slitting machine for longitudinally slitting sheet tinplate to form blanks for can bodies has two parallel horizontal shafts carrying cutter rolls conventionally arranged in pairs of overlapping rolls so as by a shearing action to slit the sheet tinplate driven to pass between the shafts. The shafts also carry further rolls which may be identical to the cutter rolls but are of a smaller diameter. Like the cutter rolls, these further rolls are arranged in pairs; however, by virtue of their smaller diameter they have a small radial clearance. By partially shearing the tinplate they therefore form the tinplate with lines of weakness parallel to the lines of slitting simultaneously made by the cutter rolls. To accommodate the machine to different thicknesses of tinplate the shaft spacing may be adjustable and/or the rolls may be readily removable for replacement by similar rolls of a different diameter.

Abstract: Creasing and slotting apparatus for use in producing carton blanks from a moving sheet of material, the apparatus comprising a pair of driven shafts one of which carries rotary creasing heads each having a formation adapted to engage the moving sheet to crease same, and the other carries rotary slotting heads aligned respectively with said creasing heads in the direction of travel of the sheet and each having a pair of spaced arcuate slotting blades one of which is movable with respect to the other around the axis of the associated shaft such that the distance between the blades and thus the slots cut thereby is adjustable, there being a first compensator means for selectively rotating the slotting heads while the associated shaft is stationary or in motion, to enable the heads to be positioned in register relative to the moving sheet, and second compensator means for selectively rotating the shaft carrying the creasing heads in a likewise manner, there being a driving connection between said creasing head sh

Abstract: In that type of sheet metal shear having upper and lower rotary cutters to which power is supplied, both to cut a sheet of metal overhanging a work table edge and to propel the shear along the line of cut, unexpected capacity is achieved. The upper and lower cutters are powered each with separate motor. The cutters are driven through bevel gear sets; the upper motor is positioned with clearance above the work table, with its shaft slanting downward to the bevel gear intersection. Using the separate upper motor eliminates the transmission of power along and across the upward slanting bridge portion of the frame aft of the cutters. With this function eliminated, the bridge portion may be lower, requiring less power to deflect the scrap being cut off. With this saving of power added to the saving from using the efficient bevel gear sets, heavier gauge sheets are slit with less power than heretofore required for thinner sheets.

Abstract: This invention relates to compact slitting mechanism units structured so to enable a plurality of such units to be positioned in abutting, close, parallel relation, for narrow width cutting, slitting or other operations, said units including pressure chambers and knife holding and aligning mechanisms with structural features enabling knife elements and actuator cylinder mechanisms of the units to be mounted in essentially unitary axially aligned relation, and having novel means for mounting and actuating the knives and for enabling removal and replacement of any knife of any unit without disassembly of parts, in a safe convenient and simple manner, the pressure chamber-knife-holding mechanism assemblies being structured of equal widths, to facilitate side-by-side positioning of plural assemblies thereof, enabling narrow width contacting operations to be performed on surfaces to be slitted or otherwise multiply so contacted thereby.