Abstract: A strip of wrapping material is fed and cut into leaves by a unit comprising first and second contrarotating rollers equipped with respective first and second blades of which the first blades operate as a pair to cut the strip transversely into leaves, and the second blades operate as a pair to impress a transverse line on each leaf, this line combining with a longitudinal line, impressed by a further disc cutter, to create a “pull” portion removable from the leaf by tearing. The timing of the second blades can be controlled, so as to adjust the position of the transverse tear-off line on the leaf, by components interacting with the strip along a predetermined feed path extending between two decoiling rollers and a cutting zone that coincides with the line of substantially tangential proximity between the two cutter rollers.

Abstract: A rotating shearing device for cropping fast-running rolling stock, in particular wire, includes two axially cutting annular knives which rotate about their axes at the same rotational speed. The two axially cutting annular knives include end cutting edges directed toward one another which converge to the clearance required for separating running stock during the cutting operation and lie in planes which are arranged at an acute angle to one another and intersect one another in a line. The rolling stock is guided toward the shearing device by a front guide and guided away from the shearing device by a rear guide. The front guide is pivotable to change in the relative position between the rolling stock and the cutting body so that the rolling stock may be guided either through the space between the annular knives which is free for the cut-free passage of the rolling stock or into the wedge-shaped cutting region of the annular knives.

Abstract: An automatic single crystal ingot disconnector which is mounted on the uppermost chuck of the conventional single crystal ingot removing assembly, which uppermost chuck assembly is adapted to shift in the axial direction of the ingot being chucked; the proposed single crystal ingot disconnector includes: (a) a neck clamper for clamping the neck of the single crystal ingot, (b) a neck cutter for cutting through the neck of the ingot to thereby disconnect the ingot from the seed crystal to which the ingot is connected, and (c) a TV camera to view the position where the neck cutter applies a cutting operation on the neck of the ingot.

Abstract: A bloom is heated and rolled by the flying shear system so as to produce a semi-finish rolled billet having a reduced cross section. A CLSI value, which is indicative of the uniform length of each of a number of product billets that can be cut from the length of the semi-finish rolled billet while maintaining predetermined optimum head and tail scrap lengths, is then calculated by the flying shear system. The cross section of the semi-finish rolled billet is corrected, so as to produce a finish rolled billet having an adjusted length, when the CLSI value is not within a safety billet length range, to thereby obtain a new CLSI value that falls within the safety billet length range. A flying shear cuts the semi-finish rolled billet or the finish rolled billet into the number of product billets when the CLSI value is within the safety billet length range.

Abstract: Plant to perform cropping and to take samples, which is suitable to crop the head and tail of a rolled product which may travel at high or very high speeds, the head and tail being discharged through an independent discharge conduit (15), the plant comprising at least one flying shears (11) at least for the shearing and correct delivery of the head and tail, the discharge conduit (15) cooperating with a flying shears (18) to take samples, at least one container (19) for the portions collected as samples being located downstream of the sampling flying shears (18).

Abstract: The front and tail ends of fast travelling rolled goods (3) such as wire rod are cropped by leading the rolled goods into a guide groove (2) extending around the periphery of a circular disc (1). The disc rotates at the same peripheral speed as the linear speed of the rolled goods. The rolled goods are positively guided in this position and are caused to accompany the disc over a sector (24). The rolled goods are sheared by a cam-operated punch (8) carried by the disc, the punch moving parallel to the axis of the disc. The separated end pieces (22) of the rolled goods are lead away in one direction, and the cropped rolled goods (23) are lead away in another direction.

Abstract: Compact shearing machine (10) with scrap shears which comprises a shears means (15) that cuts to size, a scrap shears means (17), a deviator means (12) to deviate rolled products (33) and a motor means (19), the scrap shears means (17) being positioned immediately downstream from the shears means (15) that cuts to size, in the direction of sliding of the rolled products (33).

Abstract: A controller for cutting sheet material so that inferior or incomplete sheet material is eliminated is characterized by the provision of means for detecting a length of sheet passing through a rotary cutter which continuously cuts the sheet material, means for calculating a length of sheet moving until the sheet is cut after a shear is started, and means for controlling the start timing of the shear so that a cut portion of sheet cut first by the shear coincides with a cut portion of sheet cut by the rotary cutter.

Abstract: The invention relates to a process for cropping the head of self-luminous rolled material, especially metal strips when it passes a rolling train. A line scanning camera is used for detecting the shape of the head by repeatedly generating optical images of the rolled material immediately downstream of the last roughing stand. The distance separating the cutting line from the beginning of the head is determined in accordance with the shape of the head. Immediately upstream a pair of shears the velocity and the beginning of the head are detected. A control signal for the shears is generated in accordance with the signals for the beginning of the head and for its velocity and with the distance of the cutting line from the beginning of the head.

Abstract: At a transition between first and second sets of index marks on a web, a target is applied adjacent the initial mark of the second set. The target is sensed and as a result the web is severed transversely at the transition between the sets of marks. A gap is formed in the web. A microcomputer synchronizes a cut-off machine with the second set of marks while the cut-off machine is in the gap whereby operator intervention is eliminated and scrap minimized.

Abstract: A moving web is divisible into a leader having a first set of registration marks and a trailer having a second set of registration marks. At a transition between the first and second sets of registration marks, a target is applied adjacent the initial mark of the second set. The target is sensed and tracked electronically to a shear. During an order change or a roll-to-roll change within an order, the web is automatically severed transversely by the shear two or more times to chop out a portion of the leader and trailer including the transition between the sets of marks. The leading edge of the trailer is tracked to a station intermediate the shear and the cut-off machine. The cut-off machine knives "crop" cut the trailer at the first registration mark following the leading edge of the trailer and thereafter cut the trailer automatically into blanks in synchronization with the second set of marks.

Abstract: At a transition between first and second sets of registration marks on a web, a target is applied adjacent the initial mark of the second set. The target is sensed and tracked electronically to a shear station. During an order change or a roll-to-roll change within an order, the web is automatically severed transversely by the shear at the transition between the sets of marks, and the target is tracked to a station intermediate the shear and the cut-off machine. The cut-off machine knives "crop" cut the web at the target and thereafter cut the web automatically in synchronization with the second set of marks. Operation of the cut-off machine knives in the cut-to-mark mode is maintained without loss of synchronization across the transition in the web. Operator intervention is eliminated, and scrap is minimized.

Abstract: A bar end dropper for forging machines or the like is disclosed which automatically operates to reject blanks cut from the end of the piece of stock which are of unsatisfactory length and to adjust the feed when necessary to ensure that the ends of pieces of stock being fed into the machine are a sufficient distance from the shear plane of the cutter to ensure a clean cutting operation. As sequential pieces of stock are fed to the machine, they are positioned in the measuring position and the measuring carriage moves in to position a sensor a distance from the shear plane determined by the length of the stock. This automatically positions the sensor.

Abstract: An improved control system for the cutting of spirally wound composite can "sticks" with accurate registration. Cutting knives, which cut a wound tube into sticks, are mounted on a servo-driven sled, which is in turn mounted on a reciprocating carriage. The point of cutting is controlled by adjusting the position of the carriage (for long term errors) and the sled (for short term errors). Factors analyzed to determine where the carriage and sled should be positioned include the phase relationship between the label and the carriage, the angle at which the label is wound onto the tube, the point at which the label is wound onto the tube, label stretch, and misprinting of reference marks on the label. Means may be included for automatically rejecting sticks which are out of registration.

Abstract: Flying cropping shears for hot strip for two horizontally spaced pairs of cutters. The cutters are driven by parallel crank drives through connecting members which maintain parallelism of the cutters. Means are provided for selectively bringing the pairs of cutters into and out of the cutting position. In this way only one pair of cutters is operative during rotation of the crank drives so as to crop either the front or the rear end of the hot strip.