US3922939A - Flying shears or stamp for traveling material - Google Patents

Flying shears or stamp for traveling material Download PDF

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Publication number
US3922939A
US3922939A US450786A US45078674A US3922939A US 3922939 A US3922939 A US 3922939A US 450786 A US450786 A US 450786A US 45078674 A US45078674 A US 45078674A US 3922939 A US3922939 A US 3922939A
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US
United States
Prior art keywords
rocker arms
knife
carrier
parallel
carriers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US450786A
Other languages
English (en)
Inventor
Walter Schlueter
Harald Dechow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HINRICHS GmbH
Original Assignee
HINRICHS GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HINRICHS GmbH filed Critical HINRICHS GmbH
Application granted granted Critical
Publication of US3922939A publication Critical patent/US3922939A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/028—Tools travelling with material, e.g. flying punching machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D25/00—Machines or arrangements for shearing stock while the latter is travelling otherwise than in the direction of the cut
    • B23D25/02—Flying shearing machines
    • B23D25/08—Flying shearing machines having two coacting shearing blades mounted independently
    • B23D25/10—Flying shearing machines having two coacting shearing blades mounted independently on co-operating beams moving parallel to each other and attached to lever mechanisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4693—With means to concurrently adjust flying frequency and retain flying speed of tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4749—Tool mounted on oscillating standard
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4783—Constantly oriented tool with arcuate cutting path
    • Y10T83/4786—Cutting couple type

Definitions

  • German Pat. No. 1,502,678 is provided with an upper and lower rocker arm whereby both knives are positively held in vertically positioned grooves.
  • the entire frame must be moved with the supports and grooves to and fro, such that the method of operation corresponds to that of a sliding shears. Due to high mass-accelerationforces, such construction does not favor higher speed operation.
  • German Pat. No. 1,627,288 features a lower knife fastened to a rocker arm which swings about a horizontal shaft.
  • the upper knife is fixed to a crankshaft, and when operating maps out a circular trejectory.
  • the lower knife is restricted to pendulum motion.
  • the crankshaft for the upper knife is adjustable, depending on the lengths to be cut off. As this adjustment of the eccentric must not influence the immersion depth of the upper knife, this system requires a very expensive manner of construction.
  • a further disadvantage of these shears lies in the fact that the knives upon cutting undergo a rotary motion which leads to untidy cut surfaces of the separate roller material.
  • German Pat. No. 1,652,789 provides for the alteration of the cutting length by moving the pivotal point of the thrust crank arm wherein said displacement results in a change of the knife path.
  • the knives function rotationally with similar results.
  • Said embodiment relates to a flying shears or stamp for traveling material with two knife carriers, which through drive means are held in motion in the direction of the traveling material.
  • the lower knife support is provided via the rocker-arms of the same length, with crank-gears of'some eccentricity, arranged in parallel and positioned in the stationary frame.
  • the embodiment provides a means for adjustment to the requisite cutting length. Such alterations, however, require independent adjustments on the connecting rods on both the lower and upper knives.
  • each knife carrier is driven in vertical direction by two cranks which are positioned adjacent one another in a frame and connected through a rod system with the knife carrier.
  • Such embodiment limits the unwanted rotational knife movement evident in prior embodiments.
  • the transfer of forces occurring in operation may result in pressure and tensile forces commensurate with variants in the cutting gap between the upper and lower knives.
  • the precise adjustment of the knife-cutting edges at the cutting point is difficult and requires a lengthy expenditure of time.
  • the invention allows high degree of accuracy in cutting materials traveling at high speeds, the attainment of clean cut cross sectional surfaces regardless of the thickness of material to be cut and the facility of adjustment to the requisite lengths. It is thus the object of the invention to produce a flying shear or stamp which allows both the high incident material speed and the maintenance of great accuracy of cut regardless of the lengths of the cut by providing for an efficient and substantially effortless adjustment of the requisite cutting lengths.
  • the invention comprises two knife carriers connected flexibly and tensionally with one another through a system of connecting rods. Adjustment of the horizontal movement of the two knife carriers is determined through a linking system to the guide or slide-bar and the setting of a carriage or slide which is slidably fastened, in the vertical, on one of the rocker arms.
  • crankgears of same eccentricity located in the lower part of the frame referenced with one another are set in rotation by a common drive.
  • the crankgears are connected flexibly or hingedly with the lower knife carrier by means of rocker-arms of equal length arranged parallel to one another.
  • the construction of the invention makes possible the utility of single and distinct structural elements which is thus made possible a rigid manner of construction which negates the elasticity problems indigenous to the prior art and thus benefits the attainment of clean cutting surfaces and a high degree of accuracy. This holds true both for the rocker arms and knife carriers as well as for the connecting rods of the knife carriers.
  • the cutting forces occurring upon cutting to length are transferred through the rocker-arms acting as pressrods directly to the crank-gears or supports of the rocker-arms and introduced into the stationary frames.
  • the invention permits the utilization of the points of rotation. By eliminating sliding bearings or sliding surfaces, roller bearings may be installed and adjusted free from play for greater accuracy.
  • the construction of the invention is extraordinarily favorable to the repetitive accuracy of the cutting operations.
  • the upper knife carrier is movably mounted by parallel rocker arms of the same length to move in supports rigidly secured to the stationary frame wherein said supports comprise the point of rotation.
  • Rocker-arms and the knife carrier form in each case a parallelogram.
  • the cutting edges of the cutting knives fixed to the knife carriers move during the operating or power stroke in each case in a straight line to one another and are always perpendicular to the axis of the material band.
  • the prevention of rotary movements of the knives during the cutting operation insures the at- 3 tainment of clean cutting surfaces upon the separating section.
  • both knife carriers are connected tensionally and flexibly with one another through connecting rods, the movement of the lower knife-carrier introduced by means of the crank-gear is positively transferred to the upper knife carrier. With this arrangement a synchronous movement of the upper and of the lower knife carrier is attained. Each rotation of the crank gear results in one cut. The requisite lengths of material are controlled by the interaction of the pre-determined band velocity and the harmonic period of the knives resulting from the pre-determined angular velocity of the crank gear.
  • the angular velocity of the crank gear is increased to pre-determined velocity.
  • the actuating velocity of the knives, generating a determined arc need be adjusted to correspond to the band speed by shifting the carriage on the guide rod system such that the guide continues to gen erate a straight line.
  • the carriage is adjustably secured on the rocker arm between the crank drive and the lower knife carrier.
  • the application points of the linking system are selected pursuant to the band velocity and the angular velocity of the crank gear. If properly selected, the motion of said point generates a straight line.
  • the invention allows the adjustment to be made solely at one point thus minimizing the requisite expenditure of time and potential inaccuracies compounded in adjustment of several points.
  • the cutting edges of the cutting knives on revolution generate harmonic trajectories of weak curvatures. In this manner, a more favorable rotation of the masses is brought about; making possible high band speeds and unlike the prior art, to undergo no distortion or deformation at requisite short blank lengths.
  • FIG. 1 is a functional view of the material to be cut traveling in direction of the arrow through the invention.
  • FIG. 2 is a vertical section detailed view depicting the elements of the invention.
  • FIG. 1 depicts the material, 1a, to be acted upon, traveling in the direction of the arrow through an apparatus l.
  • the apparatus 1 for cutting or stamping traveling materials comprises a rigid stationary frame lb (FIG. 2) providing support for a pair of crank gears 2 and 3.
  • a frame 1b further provides a pair of permanent supports 8, 9 for a pair of rocker arms l0, l1 movably secured via points 8a, 9a.
  • the rocker arms 10, 11 are of equal length and arranged in parallel.
  • the supports 8, 9, may comprise shafts fixed in the side supports of the frame lb or bearings mounted in said frame.
  • a knife carrier 12 with an upper knife 13 fixed thereon is hingedly connected with the rocker arms l0, 11.
  • a knife carrier 6 is hingedly connected with the knife carrier 12 via an arm 15 and a connecting rod 14.
  • crank gears 2, 3 have similar eccentricity and are connected fixed against rotation with one another. They are set in rotation by a drive shaft 16, which may be connected with a drive means.
  • An adjustablecarriage 17 is secured on the rocker arm 4. In operation, the motion of a linkage point 25 approximates a straight line.
  • a connecting rod 18 movably communicates said carriage 17 with a linkage 19.
  • a guide rod 20 is rotatably attached to a stationary bearing 24 and movably connected with the connecting rod 18.
  • crankgears 2, 3 rotate in counterclockwise direction. Such rotation induces vertical and angular movement in the rocker arms 4, 5.
  • the movement of the rocker arms 4, 5 is transferred to the knife carrier 6 resulting in actuation of the lower knife 7 both in the vertical and the direction of the traveling material.
  • a concomitant motion in the same direction and of equivalent velocity results in the knife carriage 12 and the upper knife 13 via said connecting arm 15 and said rod 14, thus resulting in synchronous velocities between the knives 7, l3 and the traveling material 13.
  • angular velocity of the crank gears 2, 3 is correspondingly decreased or increased.
  • the actuating speed of the knives 7, 13 is commensurately adapted, by changing the position of the carriage l7 referenced on the rocker arm 4.
  • the carriage 17 is adjusted in direction of the knife carrier 6.
  • the adjustment is made in direction of the crank gear 2.
  • the invention may be used in other processes. If the material 1b is to be stamped, suitable stamping or processing tools may be disposed on efficaciously constructed knife carriers 6, 12.
  • An apparatus for processing a continuously traveling web comprising, in combination,
  • said tool carriers having tools held in parallel and acting in concert to operate on incident material, rocker arms hingedly connected to said tool carrier,
  • upper rocker arms having equal length and arranged in parallel and hingedly connected to said upper tool carrier
  • lower rocker arms having equal length and arranged in parallel and hingedly connected to said lower tool carrier.
  • said adjustable means comprises a linkage system having a carriage means wherein said carriage means is adjusted by vertical displacement along a lower rocker arm and secured to said lower arm at a point, when motive, approximates a straight line.
  • a machine for cutting traveling material comprising:
  • said knife carriers having shearing knives, held in parallel and acting in concert to operate on incident material
  • rocker arms comprise:
  • upper rocker arms having equal length and arranged in parallel and hingedly connected to said upper knife carrier
  • lower rocker arms having equal length and arranged in parallel and hingedly connected to said lower knife carrier.
  • said adjustable means comprises a linkage system having a carriage means wherein said carriage means is adjusted by vertical displacement along said lower rocker arm and secured to said lower arm at a point when motive approximates a straight line.
  • a machine for cutting traveling material comprising:
  • said tool carriers held motive through said drive means in the direction of traveling material, upper rocker arms hingedly connected to said upper tool carrier,
  • said adjustable means comprises a linkage system having a carriage adjustably secured on said lower rocker arm,
  • said carriage being adjustable by vertical displacement along said lower rocker arm and secured to said lower rocker arm at a point which when in motion approximates a straight line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Cutting Processes (AREA)
  • Shearing Machines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Treatment Of Fiber Materials (AREA)
US450786A 1973-04-14 1974-03-13 Flying shears or stamp for traveling material Expired - Lifetime US3922939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2318970A DE2318970C3 (de) 1973-04-14 1973-04-14 Fliegende Schere oder Stanze für laufendes Material

Publications (1)

Publication Number Publication Date
US3922939A true US3922939A (en) 1975-12-02

Family

ID=5878141

Family Applications (1)

Application Number Title Priority Date Filing Date
US450786A Expired - Lifetime US3922939A (en) 1973-04-14 1974-03-13 Flying shears or stamp for traveling material

Country Status (9)

Country Link
US (1) US3922939A (de)
JP (1) JPS5311710B2 (de)
AT (1) AT325386B (de)
CH (1) CH554224A (de)
DD (1) DD105575A5 (de)
DE (1) DE2318970C3 (de)
GB (1) GB1415263A (de)
IT (1) IT993803B (de)
NL (1) NL153112B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083218A (en) * 1974-05-27 1978-04-11 Schloemann Siemag Aktiengesellschaft Arrangement for the further treatment of sectional steel
US4085641A (en) * 1975-12-30 1978-04-25 Kawasaki Jukogyo Kabushiki Kaisha Flying shear machine for cutting traveling stock
US5293795A (en) * 1990-12-21 1994-03-15 Bridgestone Corporation Method and apparatus for cutting and shaping belt-like members
US5679205A (en) * 1995-06-26 1997-10-21 The Goodyear Tire & Rubber Company Apparatus for severing and shaping a strip of elastomeric material
US6453784B1 (en) * 1999-05-05 2002-09-24 Robert Bosch Gmbh Apparatus for cutting individual pieces from a continuously moving extruded strand
US20170368592A1 (en) * 2016-06-24 2017-12-28 Aida Engineering, Ltd. Press machine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL181413C (nl) * 1975-11-18 1987-08-17 Wavin Bv Inrichting voor het continu aanbrengen van perforatie-openingen in een kunststofbuis.
DE2636738A1 (de) * 1976-08-14 1978-02-16 Schuler Gmbh L Zerteilvorrichtung fuer kontinuierlich laufendes bandmaterial mit einem gelenkantrieb
IT1128837B (it) * 1980-06-30 1986-06-04 Aspera Spa Perfezionamenti nei compressori per fluidi frigorigeni
JPS58185330U (ja) * 1982-06-01 1983-12-09 新日本製鐵株式会社 走行鋼板からのサンプル等打抜き駆動装置
JPS5981529U (ja) * 1982-11-24 1984-06-01 住友重機械工業株式会社 走間穿孔剪断機
JPS5981532U (ja) * 1982-11-25 1984-06-01 住友重機械工業株式会社 走間式型打ち機の同期装置
JPS5981531U (ja) * 1982-11-25 1984-06-01 住友重機械工業株式会社 走間式型打ち装置
DE19855524A1 (de) 1998-12-02 2000-06-08 Natec Reich Schneidvorrichtung
DE102016006407A1 (de) * 2016-05-31 2017-11-30 Kaibel & Sieber Gmbh Maschinen- Und Anlagenbau Trennvorrichtung zum Ablängen einer Materialbahn

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1505711A (en) * 1923-10-06 1924-08-19 United Eng Foundry Co Flying shears

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7229447U (de) * 1973-04-12 Schuler L Gmbh Fliegende Schere zum Unterteilen von laufendem Blechband
DE633092C (de) * 1931-08-14 1936-07-30 Johann Hahn Fliegende Schere zum Schneiden von laufendem Walzgut
DE959783C (de) * 1953-05-09 1957-03-14 Fritz Ungerer Dipl Ing Fliegende Schere zum Unterteilen von laufendem Schneidgut
DE1167106B (de) * 1962-05-02 1964-04-02 Georg Schweiger Vorrichtung zum Zubringen von Futter fuer Grossvieh
DE1926561U (de) * 1962-11-06 1965-11-04 Hoestemberghe & Kluetsch G M B Schere zum kontinuierlichen schneiden von in bewegung befindlichem walzgut in beliebige laengen.
CH429382A (de) * 1964-11-20 1967-01-31 Bbc Brown Boveri & Cie Schere für kontinuierliche Walzenstrassen
DE1552619A1 (de) * 1966-04-28 1970-04-09 Hallden Machine Company Fliegende Presse
DE1652789B1 (de) * 1968-01-19 1971-05-27 Ungerer Irma Fliegende schere zum unterteilen von durchlaufendem schneid gut

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1505711A (en) * 1923-10-06 1924-08-19 United Eng Foundry Co Flying shears

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083218A (en) * 1974-05-27 1978-04-11 Schloemann Siemag Aktiengesellschaft Arrangement for the further treatment of sectional steel
US4085641A (en) * 1975-12-30 1978-04-25 Kawasaki Jukogyo Kabushiki Kaisha Flying shear machine for cutting traveling stock
US5293795A (en) * 1990-12-21 1994-03-15 Bridgestone Corporation Method and apparatus for cutting and shaping belt-like members
US5679205A (en) * 1995-06-26 1997-10-21 The Goodyear Tire & Rubber Company Apparatus for severing and shaping a strip of elastomeric material
US6453784B1 (en) * 1999-05-05 2002-09-24 Robert Bosch Gmbh Apparatus for cutting individual pieces from a continuously moving extruded strand
US20170368592A1 (en) * 2016-06-24 2017-12-28 Aida Engineering, Ltd. Press machine

Also Published As

Publication number Publication date
DE2318970C3 (de) 1984-07-05
NL153112B (nl) 1977-05-16
JPS5042487A (de) 1975-04-17
DD105575A5 (de) 1974-05-05
NL7310686A (de) 1974-10-16
DE2318970B2 (de) 1975-11-13
IT993803B (it) 1975-09-30
CH554224A (de) 1974-09-30
AT325386B (de) 1975-10-27
DE2318970A1 (de) 1974-10-24
JPS5311710B2 (de) 1978-04-24
GB1415263A (en) 1975-11-26

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