Abstract: A cutter assembly (82) for cutting web material such as paper (80) includes a circular cutter (100) having an endless peripheral blade (102) mounted on a frame (92) on which also is mounted a tension roller in the form of a pulley (94). A smaller pulley (98) is mounted on and co-axial with the circular cutter 100, and a belt (96) is trained around the pulleys (94 and 98). The portion of the belt (96) on the tension roller (94) provides an engagement surface adapted to engage the paper (80) so that movement of the cutter assembly (82) causes rotation of the tension roller (94) and thus faster rotation of the circular cutter (100). This results in efficient cutting of the paper (80) and high cut quality because the tension roller (94) prevents bunching of the paper (80) in the vicinity of the endless blade (102).
Abstract: A punch assembly is provided wherein individual punches may be quickly released and extracted from a punch ring by depressing an elongated retainer member positioned adjacent and transverse to each of the punches. The retainer member has walls defining a concave groove, and the retainer walls are selectively engageable with complemental, groove-defining walls of each punch. A spring normally biases the retainer member to a position where the retainer walls tightly engage the punch walls and thereby retain the punch within a bore of the punch ring. When the punch must be removed from the ring for repair or replacement, the retainer can be depressed against the bias of the spring and shifted to a position wherein the groove-defining retainer walls disengage the groove-defining punch walls, thereby enabling the release of the punch from the punch ring.
Abstract: A cutting device for a belt-like object is characterized by a pair of feed rollers and another pair of feed rollers which hold from both sides an object being supplied to be cut in succession. The rollers rotate at the same speed and are mounted in a horizontal direction respectively above and below the cutting position. The rotation of a main shaft driven by a motor is transmitted to a driving shaft of the pair of feed rollers placed above the cutting position through the main driving wheel of a one-way clutch. The rotation of the main shaft is also transmitted to a driving shaft of another pair of feed rollers placed below the cutting position through a subordinate driving wheel of said one-way clutch.
Abstract: The instant invention is particularly directed to a method and apparatus for automated handling of panels comprising a plurality of interconnected substrates in order to control and separate the circuit boards in a continuous processing line. One embodiment incorporates two shearing stations and a rotary transfer device therebetween in order to transfer a panel portion from the first station to the second station while controlling and rotating the panel for subsequent feed to the second station such that the panel portion is cut on a line of the substrate which is perpendicular to the original line of cut of the substrate. Throughout the handling of the panels and panel portions, sensing, gripping, and indexed feeding of the panels and panel portions are under the control of a programmable computer.
Abstract: Apparatus and method for forming disks or other articles from flexible sheet material. The disks can be used, for example, as substrates of magnetic recording disks known as floppy disks. The apparatus includes an upper die plate shiftably mounted above a lower die plate and having a die thereon so that a strip of material moveable between the die plates can be sequentially die-cut to form the disks. The upper die plate has quick release latches attaching the upper die plate to a support so that, when the latches are retracted, the upper die plate can be quickly and easily removed from the apparatus to permit the die to be sharpened or replaced. The apparatus includes air delivery ports near the upper and lower die plates to direct air under pressure against a disk after it has been die-cut from the strip so that the disk will be moved laterally and into a chute and onto a spindle which receives a stack of the disks.
Abstract: A scoring guide and glass cutter system is provided consisting of a guide assembly and a glass cutter holder. The guide consists of two L-shaped members to which are attached slide blocks which ride on slide block guides mounted on the side of the base members. A cutting board is placed between the base members and a guide bar is positioned on the slide blocks. The plate glass is positioned between the cutting board and the guide bar. The glass cutter holder has guide slots that ride on the guide bar. When in this position the glass cutter extends beyond the base of the holder and contacts the glass. The pressure of the cutter on the glass is constant.
Abstract: A truss component saw apparatus having multiple saws arranged in two sets for providing a variety of angular cut-offs for lumber lengths. The saws in each set are arranged for adjustment movements involving from 1 to 4 degrees of freedom of movement. An automatic control mechanism is provided for automated adjustment of the saws to predetermined positions. The degrees of freedom are linear, pivotal, and movement within an X-Y coordinate plane arranged substantially perpendicular with respect to the pivot axis established by the saws within a given set of saws. A lumber conveyor system is provided for the apparatus.
Abstract: A device with the aid of which the first workpiece bundle, in particular, of long and narrow configuration, severed on a panel splitting saw from a workpiece stack which is to be split up into single workpiece bundles, is held in such a way that upon termination of an advancing motion, it cannot tilt over in the direction of advance, is described. To this end, the device is characterized by a counter holding member which is drivable parallel to the cutting plane of the panel splitting saw which splits up the workpiece stack from a position of rest into a stop position engaging the workpiece bundle, and which is movable together with the workpiece bundle in the direction of advance.
Abstract: A pool light installation device is provided which quickly and easily cuts holes in the walls of above-ground pools. A cutting plate and a cutting base member are placed one on either side of the pool wall at the chosen location, joined together by a threaded bolt which passes through a small hole made previously in the pool wall. The threaded bolt is rotated by the use of a wrench or other tool causing the cutting plate to be drawn towards and into the cutting base member. The cutting plate has teeth formed therein which penetrate the pool wall and commence a shearing action between the cutting plate edge and the opening in the cutting base member, which then cuts a hole in the pool wall in the exact shape of the cutting plate.
Abstract: A perforating apparatus wherein two rolls define a nip for a running web of paper which is provided with rows of transverse perforations by tools at the periphery of one of the rolls. The rolls are driven in opposite directions by a timing shaft through the medium of a system of gears including an intermediate gear which indirectly drives the one roll and is directly or indirectly mounted on an eccentric. The eccentric is driven by a power train including a differential one output shaft of which carries the eccentric and another output shaft of which is normally held against rotation but can be turned by a worm to thereby change the phase of the one output shaft relative to the input shaft of the differential to thus compensate for eventual inaccuracies in the distribution of perforating tools at the periphery of the one roll.
Abstract: A band saw machine is provided with a fixed and movable blade guide arm which are set apart by a distance which is proportional to the width of workpiece to be cut. A detector mounted on one of the guide arms senses the lateral deviation of the saw blade during cutting and a control circuit outputs a termination signal to shut down the machine when the deviation is larger than a desired maximum value. When a workpiece of a different width is to be cut the guide arms are reset apart by a distance proportional to the width of the new workpiece and a detector is provided which senses the change of distance between the guide arms and outputs a signal to a revising circuit. The revising circuit then revises the maximum value of deviation to be allowed based on the change of distance between the guide arms.
Abstract: A device for feeding workstock to a saw blade. The device includes a friction drive adapted to engage a surface of the workstock to propel the same. The drive is mounted for a range of movement in a direction to accommodate workstock with varying dimensions. A gas spring holds the drive in any selected position within the range of movement and resiliently biases the same against movement away from that position. The gas spring includes a valve system which is operable at least to reduce the bias to facilitate selected adjustment of the drive and closable to hold the drive in a substantially fixed orientation throughout the range of movement.
November 20, 1985
Date of Patent:
June 23, 1987
National Research Development Corporation
Abstract: The scroll-saw disclosed is constructed so as to make the task of clamping and un-clamping the saw-blade very simple and very quick. The quick-change facility makes it possible for a craftsman to contemplate cutting intricate designs having myriads of internal shapes. The electric motor of the scroll-saw is connected to the blade by means of a clutch. The clutch is operated by a foot-pedal. The blade is kept in constant tension by a spring. The scroll-saw includes a shoe, which is guided from up/down movement--when up, the shoe is clear of the blade--when down, the shoe comes into contact with the blade, and allows the blade to be de-tensioned. Thus, the blade can be un-clamped, and moved to the next internal shape to be cut, while the vertical position of the blade is controlled by the shoe. The movement of the shoe also is controlled by the foot-pedal.
Abstract: A cutting blade is fixed to a supporting frame rotatable about an inlet applicator roller. Locator projections work together to stop said frame in a predetermined angular position, in which the blade carries out the cutting of the adhesive tape on the applicator roller.
Abstract: Successive watermarks on a running web of coherent paper sheets are monitored by a scanner which generates defect signals in response to detection of watermarks outside of selected portions of the respective sheets, and the cross cutter which severs the web to form discrete sheets is then adjusted to separate the respective sheets from the next-following sheets with a delay or prematurely so that the sheets bearing the improperly positioned watermarks are too short or too long. Such defective sheets are segregated from satisfactory sheets downstream of the cross cutter in properly delayed response to generation of defect signals by the scanner.
Abstract: A slitting machine of the type having a pair of spaced, parallel arbors and at least one pair of mating rotary knives, each arbor carrying one mate of each pair of rotary knives, each rotary knife being positioned in a desired axial relationship with its mate on the other arbor, this desired relationship being maintained by manual or automatic control of the relative positions of the arbors by rotatably mounting at least one end of at least one arbor in a slideable sleeve which may be cam driven in both axial directions. Axial backlash is reduced by maintaining the arbors in compression with a spring loaded tailstock.
Abstract: A construction for a paper or film cutter for use with strip printers or photo copiers working from continuous rolls of paper or film. It consists of a rotary blade and a stationary blade mounted in a sheet metal U-frame. The rotary blade is driven by a rotary solenoid which provides the inboard bearing for the rotary blade and which is resiliently mounted to the frame to allow for the alignment of the outboard bearing of the rotary blade. The stationary blade is loosely mounted in slots in the U frame. The slots are dimensioned and located to position the cutting edge of the stationary blade to be askew of and to intersect the cutting edge of the rotary blade to provide a cutting point of contact between the two blades. The cutting point of contact traverses the length of the two blades during the cutting stroke.
Abstract: At least two carriers (12, 13) are provided at the cross cutter (4) of a glass cutting table (1), these carriers, after termination of the scoring operation, being brought into contact with a glass sheet (2) and push the latter away from the glass cutting table (1). Ordinarily, at least one of the carriers (suction cups 12, 13) is movable in the direction of the longitudinal extension of the cross cutter (4).
Abstract: A sawmill in which a multi-log supporting mechanism is constructed wherein logs are grasped at spaced angular positions about the mechanism and rotated by it between an initial receiving position to a profile measurement position and then to a sawing position. The end-to-end axis of the supporting mechanism is adjustably oriented with respect to a saw in terms of profile measurements and size of lumber determined to be cut from a log. Directionally, this adjustment is made normal to the profile measurement dimension.