With Tool Speed Regulator Patents (Class 83/311)
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Patent number: 4240312Abstract: A method and apparatus for extending the useful life of resilient covers on anvil rolls of rotary die cutters by causing the die cutting rules to penetrate the covers at sequential incrementally small circumferentially spaced locations around the cover by adding to the speed of rotation of the anvil roll relative to the speed of the die holder roll. Lateral reciprocation of the anvil roll is translated to rotary motion by a gear and pivot lever arrangement, such rotary motion being added to the normal speed of the anvil roll.Type: GrantFiled: May 15, 1979Date of Patent: December 23, 1980Assignee: The Ward Machinery CompanyInventor: William F. Ward, Sr.
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Patent number: 4208932Abstract: A cutting mechanism including a backing roller having a longitudinal axis of rotation and a rotatably mounted cutting member having a cutting edge and a longitudinal axis of rotation disposed parallel to the axis of rotation of the roller member. The backing roller is freely rotatably mounted about its axis of rotation. Thus, the cutting member cuts at different locations along the circumferential surface of the backing roller each time. The backing roller is resiliently mounted to float in a direction transverse to a plane extending vertically through its axis of rotation. The roller is mounted on a carrier body that is laterally movable to effect movement of the roller in a direction parallel to the axis of rotation of the roller. Unique timing belt and gear drive mechanisms are used to effect driving of the draw rollers and cutting devices. A particular guide mechanism is used to direct the tear strip from a supply to the point where it is superimposed on a web of wrapping material.Type: GrantFiled: March 11, 1977Date of Patent: June 24, 1980Assignee: Scandia Packaging Machinery CompanyInventor: Andrew W. Anderson
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Patent number: 4202229Abstract: Cutting or perforating apparatus for a web of material enabling at least one knife on at least one rotary knife shaft to cut the web at adjustable intervals comprises mounting plates for the knife shaft that are fixed on a rotatable plate shaft. The knife shaft is driven by a central gear freely rotatable on the plate shaft. An operative connection between the plate shaft and control gear comprises a first gear fixed to the plate shaft and engaging a second gear rotatable on a fixed pin, a third gear rotatable on said pin and engaging a fourth gear fixed to said central gear. Said second and third gears are coupled by a mechanism comprising a first gear segment connected to said third gear and engaging a second gear segment secured to a freely rotatable pin eccentrically positioned on said second gear, said rotatable pin also carrying a slotted link slidable on a fixed projection.Type: GrantFiled: October 4, 1978Date of Patent: May 13, 1980Assignee: Windmoller & HolscherInventor: Richard Feldkamper
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Patent number: 4196645Abstract: 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.Type: GrantFiled: October 4, 1978Date of Patent: April 8, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Shigehisa Shimizu, Shigemitsu Mizutani, Noboru Shimmra, Hisahiro Tanigawa
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Patent number: 4114489Abstract: A control arrangement for a dividing apparatus for dividing or cutting continuously fed strip stock of variable thickness. The dividing apparatus includes a drive arrangement for driving a cutting unit in a horizontal and vertical direction with an arrangement being provided for vertically adjusting the height of the cutting unit. A control arrangement is provided which includes a measuring device arranged in the dividing apparatus at a position upstream of the cutting unit, as viewed in the feed direction of the strip stock, with the measuring device dividing an output signal indicative of the measured thickness of the strip stock, which output signal is directed to control elements so as to correlate the speed of the drive arrangement and adjust the height of the cutting unit between minimum and maximum values in correspondence with the measure thickness of the strip stock.Type: GrantFiled: August 26, 1977Date of Patent: September 19, 1978Assignee: L. Schuler GmbHInventors: Franz Schneider, Helmut Braitinger, Burkhard Schumann
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Patent number: 4056994Abstract: The flying shear is designed as a crank rocker shear for crosscutting metal strips continuously fed thereto, with the crank effecting entrainment of strip cutting knives in the direction of strip movement and return of the knives in the opposite direction, and with the crank radius being adjustable in accordance with different cutting lengths of the strip. A cylindrical drum is rotatably mounted in the shear frame, and the crank axle is mounted within the drum to extend parallel to the axis thereof and for adjustment radially of the drum. Cooperating wedge surfaces are provided on the inner surface of the drum and on the crank axle, and the wedges on the crank axle are adjustable by a threaded spindle, having right hand and left hand threads, threaded through the wedges and rotatable, to adjust the crank radius, by a hydraulic motor.Type: GrantFiled: September 21, 1976Date of Patent: November 8, 1977Assignee: Irma Ungerer geb. DollingerInventor: Josef Ihle
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Patent number: 4034635Abstract: An improved cut-off control for operating a cut-off mechanism to cut sheets of uniform length from a moving web. The cut-off control comprises means for computing actual sheet length and sheet length error and for generating separate signals indicative thereof. Digital means cylically increment and decrement the actual sheet length signal. Digital means determine whether the sheet length error is within prescribed limits of the uniform sheet length in response to the cylically incremented and decremented actual sheet length signal. A positioning motor corrects the sheet length error if it is determined to be outside the prescribed limits. Digital means simulate the correction of sheet length error effected by the positioning motor and correct the actual sheet length signal as a function thereof.Type: GrantFiled: April 20, 1976Date of Patent: July 12, 1977Assignee: Molins Machine Company, Inc.Inventor: Allan Brent Woolston
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Patent number: 4024780Abstract: An improved flying saw of simplified and more economical construction is disclosed which operates smoothly with reduced vibration and which performs in an improved manner at higher operating speeds. The machine has a main crank arm with a rotary saw blade at one end and an adjustable counterweight at the opposite end, a stabilizing crank arm with a counterweight, and a connecting rod causing the arms to rotate in unison. Both arms telescope to permit simultaneous adjustments of arm radius while screw jacks adjust the height of the crank axis relative to the work. The work is supported on a wheel having a special sliding-block eccentric which moves the wheel in a vertical direction to deflect the work into the path of the rotary saw blade. A quickdrop support bracket permits lowering of the wheel and its eccentric away from the path of the work in an emergency situation so that flow from the mill need not be interrupted.Type: GrantFiled: June 17, 1975Date of Patent: May 24, 1977Assignee: Aetna-Standard Engineering CompanyInventor: Jerzy F. Patejak
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Patent number: 3965785Abstract: An apparatus for accurately and efficiently cutting a web of sheet material into individual cut segments, and which comprises a pivotal rocker arm, and means for periodically oscillating the rocker arm which includes an endless chain having one or more cams carried thereby. Each cam is positioned to operatively engage the rocker arm during its traverse of a portion of the trackway followed by the chain to thereby oscillate the rocker arm. The rocker arm is operatively connected to a pair of cutting knives so the knives oscillate therewith, and toggle means is provided for actuating the cutting knives during each forward oscillation thereof.Type: GrantFiled: February 26, 1975Date of Patent: June 29, 1976Assignee: Medical Specialties, Inc.Inventor: Herman S. Johns
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Patent number: 3962942Abstract: The cutoff mechanism repetitively cuts a moving web into sheets by at least one cutting blade movable in the direction of travel of the web at web speed at the instant of cutting. The cutting blade is controlled by a cyclic mechanism. The cyclic mechanism has a uniform input speed or a cyclic input speed. When the cyclic mechanism is driven with a cyclic input speed, the normal range of sheet length is doubled.Type: GrantFiled: November 29, 1974Date of Patent: June 15, 1976Assignee: Molins Machine Company, Inc.Inventor: James T. Ferara
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Patent number: 3958481Abstract: An apparatus for cutting a moving object into pieces of a fixed length, wherein an upper cutter base disposed at a specified distance from a lower cutter base is installed on the upper portion of rods supported to be vertically movable through vertical holes formed in the lower cutter base which is supported transversely on the frame in a rotatable fashion, said upper and lower cutter bases are respectively equipped with the upper and lower cutters confronting each other, the lower ends of said rods are pivotally connected to eccentric positions on the crank discs which are supported vertically on the frame in a rotatable fashion, and said crank discs are rotated by a driving mechanism.Type: GrantFiled: July 10, 1975Date of Patent: May 25, 1976Assignee: Eisai Co., Ltd.Inventor: Mamoru Arai
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Patent number: 3946630Abstract: A pendulum shear for a continuous casting installation wherein the shear is provided with a mechanical drive for a pulse-like cutting operation, a knife or cutter rigidly connected with the pendulum and movable by a driven crank towards a second knife. Further, there is provided mechanism for accelerating the pendulum out of its rest position at approximately the maximum knife opening in the direction of travel of the strand, this mechanism, prior to the cutting operation, accelerating the pendulum at its cutting region to a speed approximately corresponding to the speed of travel of the strand. The mechanism for the acceleration of the pendulum consists of a guide arranged at the stand or housing and guides the pendulum along its path between the rest position and the start of the cutting operation, and the cooperation of this guide with the pendulum moved by the crank controls such acceleration.Type: GrantFiled: October 29, 1974Date of Patent: March 30, 1976Assignee: Concast AGInventors: Adalbert Roehrig, Josef Zeller, Adrian Stilli
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Patent number: 3943809Abstract: A continuously moving web passes over a fixed female die, which die is slotted to define a U-shaped cutting edge. A cylindrical punch rotates on an axis above the path of the web so that a cutting edge defined at the free end of the punch moves into the slot defined in the fixed die to cut a tab in the web. The length of the tab so cut can be varied by changing the relative speed of movement between the punch and that of the web, and the punch is mounted at an offset to its rotational axis. If such offset is positive, that is in the direction of rotation, the tab can be formed to "lead" the web. Providing the offset in the opposite or negative direction, the tab "trails" the web.Type: GrantFiled: June 17, 1975Date of Patent: March 16, 1976Assignee: Package Machinery CompanyInventors: Lawrence W. Schoppee, Alfred D'Antonio