Abstract: A composer clipper apparatus that includes a composer for producing a composed ribbon of veneer from veneer pieces disposed edge-to-edge. A conveyor system transports the ribbon of veneer downstream from the composer. The ribbon of veneer is cut into sheets of predetermined length at a clipping station downstream from the composer. A sensor sensing a cut lead edge in the ribbon of veneer, and a coordinated tracking device, controls operation of the clipping station.

Abstract: An apparatus for cutting running workpiece includes a cutter for cutting, while the workpiece is running, the workpiece continuously supplied to run in a direction, and a travel member secured to the cutter, movable along the workpiece in contact with the workpiece. Since the travel member movable along the workpiece in contact with the workpiece is secured to the cutter, the cutter can follow a workpiece which is straight, curving or curving with a changing curvature. The cutter can be supported to be two-dimensionally movable to cut the workpiece in any form.

Abstract: An apparatus for the dimensionally accurate cutting of a product carrier (1) which is in the form of a strip, is transported further in a cyclic or continuous manner in the longitudinal direction and has cells which are arranged one behind the other and are sealed in an airtight manner comprises a rotating cutter roller (15), which severs the product carrier (1) in each case in the region of a sealing web (4) which is situated between two cells (2), is arranged transversely with respect to the longitudinal direction and is provided with a lattice-like embossing (19). In order to identify and localise the sealing web (4), an optical reflection sensor (6) is arranged above and/or below the product carrier (1) and generates an AC voltage signal which corresponds to the lattice structure when the sealing web (4) is located in the region of the reflection sensor (6), the number of periods being a measure of the width b of the sealing web (4).

Abstract: An apparatus for cutting the peripheral portion of a film projecting from the peripheral edge of a laminated glass plate having the film sandwiched between a pair of glass plates has a robot arm and a robot hand connected to the the robot arm. The robot hand has a releasable cutting blade, a device for biasing the cutting blade against the peripheral edge of a laminated glass plate, a device for biasing the cutting blade away from the peripheral edge of the laminated glass plate when the resistance force acting on the cutting edge of the cutting blade becomes larger than a predetermined level, and a device for biasing the cutting blade close to the peripheral edge of the laminated glass plate.

Abstract: A continuous web of sheet material is fed through the lip of a first pair of driven pull rolls around a series of idler rollers and through the nip of a second pair of driven pull rolls. The pairs of pull rolls are selectively rotated to exert a desired tension on the web in a tension zone formed between the pairs of rolls. One pair of pull rolls operates as feed rolls to advance a preselected length of the web to a rotating cutter mechanism so that envelope blanks of a selected length are cut from the web for each revolution of the cutter mechanism. The feed rolls are operated by a servo-controlled motor responsive to an operator initiated signal to adjust the feed length without interrupting the feed of the web to the cutter mechanism. The second pair of pull rolls operates as tension rolls and is servo-motor controlled to maintain a preselected tension on the web fed to the cutter mechanism.

Abstract: A rotary punching device for punching a hole on a sheet includes: a first rotary shaft having an outer peripheral surface; a punch mounted on the outer peripheral surface of the first rotary shaft; a second rotary shaft arranged in parallel with the first rotary shaft, the second rotary shaft having an outer peripheral surface; a die mounted on the outer peripheral surface of second rotary shaft; a motor connected to the first and second rotary shafts to synchronously drive the first and second rotary shafts such that the punch and the die are engaged with each other within a predetermined rotational angle range; a sheet feeding mechanism for feeding the sheet into between the first and second rotary shafts at a constant sheet feeding speed to punch the sheet by the punch and the die; and controller for controlling the rotation speed of the motor referring to the sheet feeding speed.

Abstract: The present invention relates to a cutting device for cutting continuous webs, whereby a draw roller (29) with pulling surfaces (42) and a rotating cutting means (33) are rotatable by separate drive units (28 and 32 respectively) so that the speed of rotation of the draw roller (29) and the rotatable cutting means (33) can be varied relative to each other, whereby the relationship between the transport speed of the web and the speed of rotation of the rotatable cutting means (33) can be varied.

Abstract: During a remaining time which is defined by excluding a positioning settling time t.sub.s and a cutting time interval t.sub.T during which a cutting edge is brought into contact with a stock from a period of time T allotted to a cutting operation which is determined by a preset length L.sub.0 and a stock running speed V.sub.A, the cutting edge maintains a speed difference .DELTA. which is as small as possible relative to V.sub.A during a fraction of the remaining time which is as long as possible. An acceleration which causes the speed difference .DELTA. is chosen to be as less as possible below a maximum acceleration which is demanded by the machine specification.

Abstract: A direct drive cut-off has a pair of cylinders, each having a helical knife blade. The path of the knife blade around the cylinder defines a synchronous length. A corrugated board is passed in a board path direction between the cylinders at a production rate. The knife blades move in proximity to each other in the board direction to cut the continuous board into sheets. The knife blades enter the board path and engage the continuous board at a beginning of engagement position of a knife blade entering edge and depart the board path at an end of engagement position of a knife blade exiting edge. The sheets are accelerated downstream of the cylinders. The cylinders are controlled by a control unit for accelerating and decelerating the rotational speed of the cylinders so that the knife blades engage the continuous board at the specific length cutting the board into sheets. The control unit is responsive to the production rate, and the sheet length.

Abstract: An electrically heated knife blade is mounted on a carriage for moving the blade across a strip of elastomeric material. The carriage is propelled by a constant force provided by a pneumatic cylinder in communication with a source of constant air pressure so that the cutting speed is automatically increased at sections of strip material which are relatively thin and the cutting speed is automatically decreased at sections of strip material which are relatively thick. Sensors for determining the position of the relatively thick sections may be connected to the source of electricity for heating the knife blade to increase the voltage while cutting the relatively thick sections and thereby provide for a substantially constant cutting speed across the strip of elastomeric material. A tire tread is bent at the location the knife blade is moved across the tread to provide matching cut ends for splicing on a tire building drum.

Abstract: A slitting machine including a first slitting stage for producing a plurality of interrupted cut slits in an advancing sheet having a leading edge and a trailing edge includes a drive pulley, a driven pulley, and a belt engaging the drive pulley and the driven pulley to provide a power path and a return path between the drive pulley and the driven pulley. The slitting machine also includes a mechanism translating rotation of the driven pulley to drive an upper slitting assembly and notched blades of a lower slitting assembly in synchronization with the advancing of the sheet by a sheet feeder.

Abstract: A pair of pull rolls unwind web material from a roll and advance the web at a preselected linear feed rate to a web cutting mechanism. The pull rolls are rotated at a preselected speed to generate the desired linear speed rate for cutting the web at selected intervals to produce blanks of a preselected length. The feed rolls are driven by a servo-motor which is operated by a controller that is microprocessor controlled. The controller is electrically connected to an encoder that is drivingly connected to a rotating knife cylinder of the web cutting mechanism. A selected length of blank to be cut from the web is inputted by the operator through a keypad to transmit a corresponding signal to the controller. In addition, the controller receives a signal from the servo-motor that drives the pull rolls, which signal is representative of the rate of rotation of the pull rolls.

Abstract: An method and an apparatus for high speed cutting, a predetermined repetitive pattern in a continuous moving web of material. The web is supported and displaced in a flat plane, and a sensor is utilized to detect the lateral position of the web on this plane. At least one cutting element, herein a high pressure water jet, is displaceably supported for movement on two transverse axes in a horizontal plane adjacent a face of the web and generates a cutting beam to cut a predetermined repetitive pattern through the web. The cutting element is secure to a guide member which is displaced in the horizontal plane adjacent the web, and its displacement and rate of speed are controlled by a control device.

Abstract: A cut-off machine adapted to be positioned downstream from a source, such as a tube mill, for receiving a moving length of tube stock from the mill and severing plural predetermined lengths from the moving length. The machine comprises a plurality of cut-off assemblies that are reciprocated longitudinally of the moving length of material and operated during the movement of sever plural predetermined lengths. Each cut-off assembly comprises a cutter blade that is supported for movement in an arcuate path and for radial movement. A cam in the path of each blade is engaged by a cam follower movable with the blade to cause the blade to move in a straight line transversely of the flattened tubing while severing the tube length.

Abstract: The load applied to a scoring wheel to the combined load of a first predetermined constant load and a second variable load. The second load is varied in response to changes in the scoring speed to provide a uniform scoring depth.

Abstract: A rod cut-off in a cigarette making machine includes a cutting device 32 having a first drive 34, a ledger 10 for supporting the rod during cutting and having a second drive 22, separate from the first drive, a device for synchronizing (prefereably electronically) the first and second drives during normal operation, and a device 40 for mechanically displacing the ledger or cutting device (preferably the former) from the normal position in which it co-operates with the other member to perform rod cutting, the displacement being arranged to occur while the machine is being accelerated from start; that is, during the time while the two drives are being brough into synchronization.

Abstract: A control system is established wherein, when there is a flow of continuous web material (2), an identification phase is provided by increasing the torque signal to a pull roll motor (13) until slippage between the pull roll (12) and continuous web is created at a breakaway torque point, the value of which is measurable. The pull roll motor is then caused to be driven by a signal which creates a motor torque output which is of a value less than the breakaway torque point. Thus, no slippage can occur. As the motor is driven at the lower torque value, a calibration phase is entered wherein an encoder output of the pull roll is properly equated with that of a measuring wheel (9), this phase occuring at a time when there can be no slip between the web-roll interface. The identification-calibration process can be repeated as often as desired.

Abstract: A method and apparatus for controlling the phasing of repeat length portions of a moving web to an operating machine along the web including method and apparatus for measuring instantaneous phasing error between web portions being operated on and the operating machine; method and apparatus for measuring repeat length error in web portions upstream of the operating station; method and apparatus for determining the total distance by which a web portion is out of phase with the operating machine before the web portion is operated on by the operating machine, method and apparatus for adjusting the movement of a web portion relative the movement of the operating machine during the last repeat length of web travel of the web portion before it is operated on by the operating machine; and method and apparatus for monitoring and correcting the phasing adjustment response.

Abstract: Apparatus for severing sections from a web by transverse severing cuts at locations related to printed marks on the web. The apparatus includes a rotary cutter and pair of feed rollers, a differential transmission by which the feed rollers are operatively connected to a common drive motor for driving the rotary cutter and the feed rolls. A servomotor is provided for imparting a correcting rotation to the transmission. A mark detector for detecting the printed marks, a sensor for detecting the position of the rotary cutter, and a controller for controlling the servomotor in dependence on the deviation of the spacing of the printed marks from the predetermined web section length are also provided. The servomotor is a stepping motor which receives stepping pulses in a number which represents the difference between the theoretical length of each web section and the actual distance between the printed marks.

Abstract: A method of generating a signal indicative of the passage of indicia on a moving web of material at a preselected reference station along the web without use of an indicia sensing device at the selected reference station comprising locating an indicia sensing device at a sensing station at a preselected distance of web travel upstream of the reference station; generating an indicia detection signal having sensing pulses coinciding with the passage of indicia at the sensing station; measuring the distance of web travel occurring after each sensing pulse in the indicia detection signal; generating an indicia reference signal having reference pulses coinciding with the passage of indicia at the selected reference station by providing a reference pulse corresponding to each sensing pulse and occurring thereafter at a point in time at which the measured distance of web travel after a corresponding sensing pulse is equal to the preselected distance of web travel between the sensing station and the preselected refer

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 correction circuit automatically calculates a distribution of actual cut lengths, cut from a workpiece by a cutting machine and automatically corrects the cutting operation when the center value of the distribution of a plurality of cut lengths differs from the desired cut length by a predetermined amount.

Abstract: The invention relates to a method for operating a shredding machine with high power for the comminution of multilayered paper, data carriers and the like with at least one drive motor and a stator winding, which upon overloading of the shredding machine automatically is switched to reverse. The operation of the machine is possible without fear of overloading the machine and the user has no need to nor temptation to grip with one's hand paper jammed into the shredding machine. The object of the invention is achieved by providing a second stator winding, which upon overloading of the shredding machine is initially connected in parallel to the one stator winding. Therefor, in case of overloading no switching into reverse occurs, but for a limited time of, for example, 10 seconds a second stator winding is connected in parallel to the first stator winding.

Abstract: Device for bringing into register a tool mounted on a rotary cylinder for processing products in sheet form, such as a tool for cutting out, creasing, or printing sheets of cardboard in a machine for making and printing corrugated cardboard boxes, comprising a coder (22) providing information representing the theoretical advance of the sheets (10, 11), a coder (23) providing information representing the angle of adjustment given to the tool holder (1), a detector (20) of the passage of a reference mark (15) on the sheet (11) to a point situated upstream of the tool holder, a detector (36) of the theoretical passage of this reference mark at a selected distance slightly downstream of the first detector (20), and a computer (33) supplying correction commands to the correction motor (8) of the tool holder in order that the tool will arrive in phase with the incident sheet (11).

Abstract: Apparatus for severing a continuous web at preselected locations spaced lengthwise of the web which includes a first drive for advancing the web at substantially uniform velocity in the direction of its length through a predetermined fixed path. A circular mandrel is mounted for rotation adjacent to the web path and has a plurality of cutter blades at uniform angular intervals around the periphery thereof. A differential transmission couples the mandrel to the web drive and is controlled by a stepper motor to advance or retard angular velocity of the cutter mandrel as compared with linear velocity of the web. A pair of sensors are respectively responsive to motion of the web and rotation of the cutter blades toward the position of cutting engagement.

Abstract: A method and apparatus for longitudinally slitting metal strip under tension is provided. The method includes driving the strip forward and controlling the speed thereof through frictional engagement with the strip and slitting the strip under tension while further driving the strip, winding coils of slit strip while still further driving the strip and measuring the speed of the strip before slitting, the speed of slitting and the speed of winding the coils of slit strip and controlling those speeds as a function of the driving speed for providing a predetermined tension during slitting and for winding tighter coils of metal strip. An apparatus is also provided which includes a driven roll means before the slitter, a slitting means which is driven and a take-up winder means which is driven, as well as speed controls for slitting the strip under tension in order to provide tightly wound coils of slit metal strip ranging from light to heavy gauge.

Abstract: Motor 17 through gears 15 drives rotary knife 18 to cut continuous wallboard line 10 into predetermined lengths 26. Microprocessor 34 monitors the position of wallboard line 10 by way of roller 28 and pulse generator 30. Microprocessor 34 also monitors the position of rotary knife 18 as measured from a park position by way of pulse generator 36. The position of wallboard line 10 is compared to the distance of travel of knife 18 from the park position and a control signal proportional to the difference in positions is generated to control motor 17 and in turn drive rotary knife 18 to sever a predetermined length 26.

Abstract: A cylindrical, rotating knife is positioned to cut a moving body of flat sheet into predetermined lengths. An electric motor rotates the cylindrical knife. The knife motor is controlled by a system responsive to the travel of the sheet passing under the knife and the rotation of the knife, itself. The two measurements are fed to a control circuit to produce an output analog electrical signal to the knife motor which varies the rotational speed of the knife during the cutting cycle to avoid wastage of the sheet as it is cut.

Abstract: Driving a dividing shear to a home position after cutting a workpiece is done without oscillations at the home position. Control uses shear position feedback signal to shape nonlinearly a variable shear velocity reference signal such that no overshoot occurs. Adaptive control procedure automatically adjusts variable shear velocity reference signal to compensate for dynamic changes in cutting operation.

Abstract: A registration control circuit for a printed label cutoff machine controls both the location of the cut by performing a phase adjustment and the length of the individual labels by performing a base speed adjustment. A strip of labels have eyemarks printed thereon for defining the location at which the individual labels are to be cut. An optical scanner is positioned adjacent the labels and generates a scanner pulse upon detection of an eyemark. The control circuit includes a setup control for automatically running the machine into registration from an initial setup position. The setup control functions to generate a reference pulse a predetermined distance before the scanner is expected to see an eyemark. When the eyemark is detected within a designated window area the control utilizes the scanner pulse and the reference pulse to calculate the phase error for each label and generate a phase correction signal proportional to the actual phase error.

Abstract: Die cutter and process for die cutting blanks by a blade unit and an anvil opposed to each other are proposed in which either the blank feed speed or the horizontal component of speed of the blade and the anvil is controlled mechanically or electronically to make them equal to each other during the cutting operation.

Abstract: Herein disclosed is a cutting device for use in a tag printer or the like, in which a tag web being fed is cut, while its cut position is continuously corrected by a rotary blade so that it can cut a variety of price tag webs having different cutting pitches or intervals. The rotary blade is rotated continuously through a differential gear mechanism by a first motor. Its cutting timing is suitably corrected by a second motor which is connected to the differential gear mechanism. Before the cutting operation, moreover, both the price tag web and the rotary blade are positioned at their respective reference positions. During cutting, information as to the positions of the tags on the web and the rotary blade are fed to a processor which adjusts the rotation of the blade for effecting cutting at the proper positions along the web.

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: A registration control circuit for a printed label cutoff machine controls both the location of the cut by performing a phase adjustment and the length of the individual labels by performing a base speed adjustment. A strip of labels have eyemarks printed thereon for defining the location at which the individual labels are to be cut. An optical scanner is positioned adjacent the labels and generates a scanner pulse upon detection of an eyemark. The control circuit includes a setup control for automatically running the machine into registration from an initial setup position. The setup control functions to generate a reference pulse a predetermined distance before the scanner is expected to see an eyemark. When the eyemark is detected within a designated window area the control utilizes the scanner pulse and the reference pulse to calculate the phase error for each label and generate a phase correction signal proportional to the actual phase error.

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 process and arrangement for controlling a pipe-cutting device for cutting pipe formed on a continuously operating spiral winding machine which forms a pipe from a band of wound sheet material such as paper. The pipe-cutting device is adapted to move along the formed pipe at a speed corresponding to the feeding speed of the band which is being guidingly fed at a predetermined feed angle toward the pipe-forming spindle of the spiral winding machine. An arrangement is provided in a continuous spiral pipe-winding machine for controlling the movement of a cutting member.

Abstract: Driving a dividing shear to a home position after cutting a workpiece is done without oscillations at the home position. Control uses shear position feedback signal to shape nonlinearly a variable shear velocity reference signal such that no overshoot occurs. Adaptive control procedure automatically adjusts variable shear velocity reference signal to compensate for dynamic changes in cutting operation.

Abstract: A bacon slicing machine having a rotating slicing blade and a feed bed adjacent said blade across which it moves forwardly into the path of the blade by a conveyor arrangement; a hold down device laterally disposed above said bed and send product when thereon comprising rotatable grippers biased toward said bed into engagement with the upper surface of the product during operation to provide for a controlled feed of the product adjacent the blade, compensating for the pull of the blade, with the rotation of the gripper sychronized with the feed of the product via the conveyor arrangement.

Abstract: A device for feeding, adjusting and cutting a continuous web in predetermined zones to obtain portions is described. The device comprises periodically cutting apparatus, apparatus for feeding the web to said cutting apparatus, and a device for detecting at least one reference mark for the zone on the web. The main characteristic of the device is to comprise first device for checking the position of the predetermined cutting zone relative to a cutting apparatus and to quantify any diversity between the two zones, and second apparatus driven by the first device for controlling and correcting any diversity relative to each portion cutting operation, to act on the feed device and/or on the cutting apparatus in order to eliminate any diversity relative to each portion cutting operation.

Abstract: A system for setting the sheet length on a cross-cutter for webs of material includes a computer which delivers to the positioning element of a speed changing mechanism, the positioning signal for one speed corresponding to the desired sheet length and to a controlled group for the positioning element of an irregular motion mechanism and to a control loop for the positioning element of a continuously variable speed transmission. The desired values correspond to the desired sheet length and the control loop for the continuously variable speed mechanism receives as a actual value, the sheet length and specifies to the positioning element, the positioning time on the basis of the deviation of the actual value from the desired value and of the speed selected. Another comparison of actual value with desired value is made only at the completion of each positioning operation.

Abstract: A paper sheeter for cutting two or more webs simultaneously into sheets has a rotary knife to make the cuts in desired register with marks (e.g. watermarks) carried by the web. A sensor is provided for detecting the marks on each web and a further sensor monitors the knife rotation; signals from the several sensors are fed to a control unit in which the signals from each mark sensor are compared with signals from the knife sensor to produce feed control signals for the respective web. These control signals may be applied to brakes associated with the web supply reels to vary the tension in each web; alternatively one web may be controlled by using the control signals to vary the speed ratio between the knife and pull rolls feeding the webs to the knife.

Abstract: A cutting control apparatus for cutting, by a rotary type flying cutter, a sheet, pipe or like material fed by a feeder. On the basis of a synchronous cutting length corresponding to setting of a blade speed change mechanism of the flying cutter and one of a travelling speed signal of the material and the revolving speed of a blade of the cutter, a reference speed signal is produced for the other of the material travelling speed and the blade revolving speed. One of a signal related to length-measuring pulses corresponding to the distance of travel of the material and a signal related to rotation pulses corresponding to the rotation of the blade is applied as an additive input to an adder, and the other is applied as a subtractive input to the adder.

Abstract: A slice control circuit senses the angular position of a blade employed to slice products, such as bacon or cheese. The position information is utilized to correctly position the product relative to the blade to obtain uniform slices. When slicing is interrupted the product is withdrawn from the blade to prevent nonuniform slices. When slicing is resumed the circuit inserts the product into the blade path at the correct point of blade rotation to resume production of uniform slices. A voltage controlled oscillator maintains the product movement in synchronism with blade velocity.

Abstract: A cross cutter for a web of goods comprises 2 coupled cutter rolls which are driven at the moment of cutting in synchronism with the webs of goods. The driving of the rolls is carried out by a driving motor, an adjustable asymmetrical coupler mechanism and a mechanism for controlling the number of revolutions per unit time of the driving motor. The cutter rolls are directly driven by the driving motor and parallel to the asymmetrical mechanism and the control mechanism is receptive of the actual number of revolutions as a control input from the asymmetrical mechanism.

Abstract: A method and apparatus for cutting a web into a specified length in which an upper cutting edge and a lower cutting edge are provided respectively above and below the web run at a constant speed. The web is cut into the specified length by moving said upper cutting edge vertically while said upper and lower cutting edges are swung in the web movement direction. The swinging and vertical movements of said cutting edges are accomplished by rotation of an eccentric crank shaft driven by a DC motor. A rotation angle of the eccentric crank shaft and a movement length of said web are outputs provided in the form of pulses, respectively, in order to coincide a movement speed of the web with a swinging speed of the cutting edges in cutting said web.

Abstract: In a horizontal bandsaw machine of the type having a base with a worktable for supporting a material, and a cutting head assembly carrying a cutting blade which is operable at varying speeds and which is arranged to perform a cutting operation on the material, the cutting head assembly being movable in one direction away from the material by a fluid-actuated mechanism fed by a pump from a fluid reservoir, and being movable in the opposite direction by means of gravity when feeding the cutting blade into the material, a control system for controlling the movement of the cutting head assembly in the aforesaid opposite direction, comprising a plurality of control valves and associated conduits for returning hydraulic fluid from the fluid actuated mechanism to the reservoir during movement of the cutting assembly in its opposite direction, the control valves being responsive in part to changes in the operating speed of the cutting blade.

Abstract: A system for controlling the speed of a DC motor so that the material fed to a rotary cutter is successively cut to desired lengths. The speed of the rotary cutter driving DC motor is controlled in accordance with a rotary cutter speed control pattern which is determined by the relation between the length of the rotary cutter circumference and the length to which the material is to be cut. This rotary cutter speed control pattern is provided in the form of speed command signals in accordance with a function output derived by setting the length of the rotary cutter circumference, the length to which the material is to be cut and the cutting distance during which the rotary cutter speed and the material travel speed synchronize with each other. The system also accomplishes the necessary control for correcting any error caused between the speed control pattern and the actual rotary cutter speed as well as the required acceleration control of the motor in accordance with the speed control pattern.

Abstract: In a servomechanism in which a cutter is rotated by a servomotor to cut a moving member in a predetermined rotational angular range of the cutter and the servomotor is controlled in accordance with the difference between the number of length measuring pulses generated corresponding to the distance of movement of the moving member and the number of rotation measuring pulses generated corresponding to the rotation of the cutter, a correcting signal is read out of a memory with respect to each rotational angular position of the cutter in the above said predetermined rotational angular range. The correcting signal corresponds to the component of unit rotational distance of the cutter in the direction of travel of the moving member at each rotational angular position of the cutter in its predetermined rotational angular range.

Abstract: A web cutting control system controlling the speed of a rotary cutter for automatic, continuous and precise cutting of a web fed at a constant speed into predetermined lengths or on the marks on the web. Two transducers generate pulses the number of which corresponds to the web feed length and the rotating angle of the rotary cutter, respectively. Three sensors detect the marks on the web, the completion of cutting, and the arrival of the cutter blades, respectively, to control the flow of signals. A desired cutting length or the distance between the mark detection point and the point of completion of cutting is preset. A reversible counter receives the pulses from these two transducers and the difference signal between the preset value and a reference signal and performs reversible counting thereof, the result of which is used to control the speed of motor for the rotary cutter to bring its speed into synchronization with the web feed speed for accurate cutting.

Abstract: A high speed automatic cold cut feeding, slicing and weighing system which is completely electrical in operation and control to provide cleanliness in operation, high speed, simplified control of all functions of the machine, and extreme accuracy in weight during high speed operation. In the system the rate of feed of the meat feeder is synchronized with the speed of rotation of the slicing blade shaft thereby automatically adjusting the speed of the slicing knife to maintain constant scaling rate.