US3757621A - Guillotines and like shearing machines - Google Patents

Guillotines and like shearing machines Download PDF

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Publication number
US3757621A
US3757621A US00116041A US3757621DA US3757621A US 3757621 A US3757621 A US 3757621A US 00116041 A US00116041 A US 00116041A US 3757621D A US3757621D A US 3757621DA US 3757621 A US3757621 A US 3757621A
Authority
US
United States
Prior art keywords
blade
leaf spring
shearing machine
shearing
resting position
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
US00116041A
Other languages
English (en)
Inventor
E Breetvelt
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.)
INTERMENUA Ltd ZA
INTERMENUA Pty Ltd
Original Assignee
INTERMENUA Pty Ltd
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
Priority claimed from ZA701132A external-priority patent/ZA701132B/xx
Application filed by INTERMENUA Pty Ltd filed Critical INTERMENUA Pty Ltd
Application granted granted Critical
Publication of US3757621A publication Critical patent/US3757621A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/04—Shearing machines or shearing devices cutting by blades which move parallel to themselves having only one moving blade
    • 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
    • B23D17/00—Shearing machines or shearing devices cutting by blades pivoted on a single axis
    • B23D17/02—Shearing machines or shearing devices cutting by blades pivoted on a single axis characterised by drives or gearings therefor
    • B23D17/08—Shearing machines or shearing devices cutting by blades pivoted on a single axis characterised by drives or gearings therefor actuated by hand or foot operated lever mechanism
    • 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
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
    • B23D33/025—Guillotines with holding means behind the knives
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2198—Tiltable or withdrawable support
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9447—Shear type

Definitions

  • ABSTRACT [30] Foreign Application Priority Data Feb. 20, 1970 South Africa 1132 A guillotine machine for shearing metal, power driven Sept. 15, 1970 South Africa 6300 or hand operated, including a yieldable supporting ele- Oct. 5, 1970 South Africa 6732 ment located in a resting position adjacent the loading edge of the first blade in the path of the second blade [52] US. Cl. 83/157, 83/694 and a biasing mechanism acting to resist displacement [51] llnt.
  • Machines of this kind are generally characterized by a lower stationary blade and an upper moving blade which slides over the lower blade to provide a cutting or shearing action along the leading edges of the blades.
  • a metal plate shearing machine which has a lower fixed blade and a supporting table extending from adjacent the fixed blade.
  • a blade carrier is mounted for sliding movement over the lower fixed blade, the carrier being provided with a slot.
  • An upper edge of the slot constitutes the upper moving blade of the machine while the lower edge of the slot provides a support against which a plate to be sheared is held. During shearing operations the plate is therefore supported on either side of the line of severance.
  • a supporting table is pivotally mounted below the moving blade, the supporting table acting to force a billet against the upper cutting blade as it passes over the lower blade.
  • An object of the present invention is the provision of a shearing or cutting machine which will provide a guillotine for severing a plate substantially free from distortion, buckling and twisting and in which the disadvantages mentioned above are materially decreased.
  • a shearing machine including a first fixed blade and a second blade movable over the first blade to set up a shearing action along their leading edges, a continuous yieldable work support comprising a resilieht member which is located in a restingposition adjacent the leading edge of the first blade and in the path of the second blade and biasing means acting to resist displacement of the reslient member from its resting position as the second blade is advanced over thefirst blade.
  • the invention also provides for the resilient member to be a leaf spring, for the biasing means to be a resiliently loaded mounting, for the leaf spring to be curved in its relaxed condition, the leaf spring bowing with its convex surface facing the second blade and its extremities supported on the mounting and further loading means provided for drawing the spring to a substantially flat position on the mounting with the latter in a position most adjacent the leading edge of the first blade.
  • FIG. 1 is a diagrammatic representation of a guillotine provided with the combination of a resiliently loaded mounting supporting a leaf spring which provides the support;
  • FIG. 2 is a diagrammatic representation of the guillotine of FIG. 1 shown in the course of shearing a metal plate.
  • FIGS. 1 and 2 application of the invention to a guillotine is shown.
  • the guillotine comprises a first stationary blade 1 having a leading edge 2 and a second moving blade 3 having a leading edge 4.
  • a supporting surface 5 is provided along leading edge 2.
  • the supporting surface 5 comprises a spring blade 6 which rests on a substantially rigid bar 7.
  • the bar 7 is supported adjacent the side of the stationary blade 1 and is connected to the frame 8 of the guillotine at one end 10 and to the movable blade 3 at the other end 9.
  • bracket 11 At the end 10 of the bar 7 bracket 11 is provided to which is pivotally connected bolt 11A which passes through spring assembly 12 and mounting 13 fixed to frame 8. Nuts 14 are provided on the free end 15 of the bolt 11A so that the position of the upper supporting surface 5 of bar 7 relative to the leading edge 2 of blade 1 can be varied.
  • a guiding collar 16 is fitted in the mounting l3.
  • a bolt 17 is fitted through bracket 18 on frame 8 and through a pivot mounting 1'9 on bar 7.
  • the bolt 17 extends further through bracket 20 on the movable blade 3,-through spring assembly 21 and has adjusting nuts 22 on the end thereof.
  • the spring assemblies I2'and 21 are conveniently made up from a series of alternately inverted disc springs 23.
  • Spring blade 6 is bent longitudinally so that when located on bar 7 it is arched with its convex surface facing leading edge 4 of blade 3.
  • the spring 6 is constrained by an embracing bracket 24 which passes over spring 6 around bar 7 and which is pivotally attached to screw threaded rod 25 held in bracket 26 by nuts 27. Nuts 27 on the extremities of rod 25 are tightened to draw down blade 6 until its supporting surface 5 rests in a straight line adjacent leading edge 2 and against bar 7.
  • blade 3 advances over blade ll leading edge 4 moves into contact with supporting surface 5. Further movement of the blade 3 over blade 1 causes contact to be established between leading edge 4 and supporting surface 5 over an increasing length. Furthermore, as blade 3 moves over blade 1 supporting surface 5 is depressed in advance of blade 3.
  • Adjustment of springs 12 and 21 is made to ensure that the supporting surface 5 only moves after the advance end 28 of moving blade 3 has cut through whatever thickness of plate is being cut in the machine.
  • spring blade 6 The effect of spring blade 6 is that as a gap 29 naturally occurs between bar 7 and blade 3 as the cut is advanced across a sheet 30 of material being cut, the inherent resilience of the spring 6 causes the latter to bow upwardly as indicated in FIG. 2 and thus maintain a direct support for sheet 30 under blade 3.
  • bracket 24 is sufficient to maintain the correct operational relationship between spring blade 6 and support bar 7 but it will be understood that certain guides can be incorporated in the machine if this is deemed desirable.
  • a shearing machine including a first fixed blade and a second blade movable over the first blade to set up a shearing action along their leading edges, a continuous yieldable work supoort comprising a resilient member which is located in a resting position adjacent and along substantially the length of the leading edge of the first fixed blade in the path of the second blade and biasing means acting to resist displacement of the resilient member from its resting position as the second blade is advanced over the first blade.
  • a shearing machine including a first fixed blade and a second blade movable over the first blade to set up a shearing action along their leading edges, a continuous yieldable work support comprising a leaf spring located in a resting position adjacent to and along substantially the length of the leading edge of the first blade in the path of the second blade and biasing means comprising at least one resiliently loaded base member, which is adapted to resist displacement of the leaf spring from its resting position as the second blade is advanced over the first blade.
  • a shearing machine as claimed in claim 4 in which the leaf spring is bowed and supported in the region of its extremities on a single resiliently loaded base memher, the leaf spring having its convex surface facing the second blade and providing the supporting surface of the work support.
  • a shearing machine as claimed in claim 5 in which further loading means is provided which is adapted to draw the leaf spring into a substantially flat position on the base member.
  • a shearing machine as claimed in claim 6 in which the leaf spring is constrained to said substantially flat position by a bracket adjustably and pivotally attached to the fixed blade.
  • a shearing machine as claimed in claim 7 in which the base member is carried between resilient end mountings, one such end mounting being attached to the fixed blade and the other such end mounting being attached to the movable blade.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Food-Manufacturing Devices (AREA)
  • Knives (AREA)
  • Details Of Cutting Devices (AREA)
  • Scissors And Nippers (AREA)
US00116041A 1970-02-20 1971-02-17 Guillotines and like shearing machines Expired - Lifetime US3757621A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ZA701132A ZA701132B (en) 1970-02-20 1970-02-20 Cutting or shearing machines
ZA706300 1970-09-15
ZA706732 1970-10-05

Publications (1)

Publication Number Publication Date
US3757621A true US3757621A (en) 1973-09-11

Family

ID=27420846

Family Applications (2)

Application Number Title Priority Date Filing Date
US00116041A Expired - Lifetime US3757621A (en) 1970-02-20 1971-02-17 Guillotines and like shearing machines
US45257074 Expired USRE28345E (en) 1970-02-20 1974-03-19 Guillotines and like shearing machines

Family Applications After (1)

Application Number Title Priority Date Filing Date
US45257074 Expired USRE28345E (en) 1970-02-20 1974-03-19 Guillotines and like shearing machines

Country Status (13)

Country Link
US (2) US3757621A (sv)
JP (1) JPS5548923B1 (sv)
BE (1) BE763219A (sv)
CA (1) CA981180A (sv)
DE (1) DE2108064C3 (sv)
DK (1) DK144674C (sv)
FR (1) FR2078868A5 (sv)
GB (1) GB1346641A (sv)
IL (1) IL36242A (sv)
NL (1) NL168735C (sv)
NO (1) NO138476C (sv)
SE (1) SE403263B (sv)
SU (1) SU465770A3 (sv)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB389327I5 (sv) * 1973-08-17 1975-01-28
US3913433A (en) * 1974-06-19 1975-10-21 Magnasync Moviola Corp Film cutter
US4510841A (en) * 1982-12-10 1985-04-16 International Business Machines Corporation Mechanism for cutting single thickness paper or like sheet material and apparatus including such mechanism
WO1992016328A1 (en) * 1991-03-13 1992-10-01 Hannu Juhani Alitalo Shearing machine having a moving curved support surface
US5569146A (en) * 1994-01-28 1996-10-29 Ranpak Corp. Cushioning conversion machine including a cutting/aligning assembly
WO2006021112A1 (de) * 2004-08-24 2006-03-02 Elpatronic Ag Schlagschere für bleche
CN100525972C (zh) * 2007-10-23 2009-08-12 重庆齿轮箱有限责任公司 可调式板簧联轴器用青铜片剪切装置
ES2399117A1 (es) * 2010-10-18 2013-03-26 Maquinaria Geka, S.A. Sistema mejorado para cortar llantas en máquinas de corte.
CN104117726A (zh) * 2014-06-16 2014-10-29 张龙 一种铝基板原料板开料机
US11660771B2 (en) * 2018-08-30 2023-05-30 Sdd Holding B.V. Cutting device and method for cutting paper

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2238841C2 (de) * 1972-08-07 1984-08-23 Intermenua (Proprietary) Ltd., Johannesburg Maschinenschere
US4246816A (en) * 1978-12-21 1981-01-27 Ivanoff Osmo O Sheet cutting apparatus
DE3431111A1 (de) * 1984-08-24 1986-03-06 Steiner, Richard, 5901 Wilnsdorf Tafelschere
FR2588205B1 (fr) * 1985-10-07 1989-08-18 Gerard Michel Appareil de coupe de tiges filetees
US5363729A (en) * 1987-08-03 1994-11-15 Amada Company, Ltd. Shearing machine
GB2208363B (en) * 1987-08-03 1991-05-29 Amada Co Ltd Shearing machine
DK1534083T3 (da) * 2002-08-05 2011-12-12 Tetra Laval Holdings & Finance Indretning og fremgangsmåde til gennemskæring af en ekstruderet ismasse

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US294966A (en) * 1884-03-11 Haevey b
US1000789A (en) * 1910-09-29 1911-08-15 Fred L Elliott Printer's lead and rule cutter.
US2742087A (en) * 1954-05-25 1956-04-17 Rudolph O Smith Sheet severing equipment
US2814343A (en) * 1950-12-22 1957-11-26 Bliss E W Co Strip splicer
US2973678A (en) * 1957-04-25 1961-03-07 Proctor Silex Corp Cutting and transfer mechanism for gelatinous treating apparatus
US3600995A (en) * 1968-11-15 1971-08-24 Haemmerle Ag Maschf Plate shears

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7939C (de) * 1879-05-15 1879-11-04 R. B. jentzsch und H. zwanziger in Wien Combinirtes Werkzeug zum Schneiden, Lochen, Vernieten und dergl.
US3408888A (en) * 1965-09-17 1968-11-05 Buffalo Forge Co Shearing apparatus
GB1158187A (en) * 1966-04-19 1969-07-16 Emile Breetvelt Improved shearing machine for plates.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US294966A (en) * 1884-03-11 Haevey b
US1000789A (en) * 1910-09-29 1911-08-15 Fred L Elliott Printer's lead and rule cutter.
US2814343A (en) * 1950-12-22 1957-11-26 Bliss E W Co Strip splicer
US2742087A (en) * 1954-05-25 1956-04-17 Rudolph O Smith Sheet severing equipment
US2973678A (en) * 1957-04-25 1961-03-07 Proctor Silex Corp Cutting and transfer mechanism for gelatinous treating apparatus
US3600995A (en) * 1968-11-15 1971-08-24 Haemmerle Ag Maschf Plate shears

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB389327I5 (sv) * 1973-08-17 1975-01-28
US3924504A (en) * 1973-08-17 1975-12-09 Hill Acme Company Shearing apparatus
US3913433A (en) * 1974-06-19 1975-10-21 Magnasync Moviola Corp Film cutter
US4510841A (en) * 1982-12-10 1985-04-16 International Business Machines Corporation Mechanism for cutting single thickness paper or like sheet material and apparatus including such mechanism
WO1992016328A1 (en) * 1991-03-13 1992-10-01 Hannu Juhani Alitalo Shearing machine having a moving curved support surface
US5569146A (en) * 1994-01-28 1996-10-29 Ranpak Corp. Cushioning conversion machine including a cutting/aligning assembly
WO2006021112A1 (de) * 2004-08-24 2006-03-02 Elpatronic Ag Schlagschere für bleche
US7717022B2 (en) 2004-08-24 2010-05-18 Soudronic Ag Guillotine shears for sheet metal
CN100525972C (zh) * 2007-10-23 2009-08-12 重庆齿轮箱有限责任公司 可调式板簧联轴器用青铜片剪切装置
ES2399117A1 (es) * 2010-10-18 2013-03-26 Maquinaria Geka, S.A. Sistema mejorado para cortar llantas en máquinas de corte.
CN104117726A (zh) * 2014-06-16 2014-10-29 张龙 一种铝基板原料板开料机
US11660771B2 (en) * 2018-08-30 2023-05-30 Sdd Holding B.V. Cutting device and method for cutting paper

Also Published As

Publication number Publication date
IL36242A0 (en) 1971-04-28
FR2078868A5 (sv) 1971-11-05
BE763219A (fr) 1971-07-16
GB1346641A (sv) 1974-02-20
JPS5548923B1 (sv) 1980-12-09
SU465770A3 (ru) 1975-03-30
DK144674B (da) 1982-05-10
DE2108064A1 (de) 1971-08-26
DE2108064C3 (de) 1983-12-08
NL7102184A (sv) 1971-08-24
IL36242A (en) 1974-03-14
CA981180A (en) 1976-01-06
NO138476C (no) 1978-09-13
NL168735B (nl) 1981-12-16
NL168735C (nl) 1982-05-17
USRE28345E (en) 1975-02-25
NO138476B (no) 1978-06-05
SE403263B (sv) 1978-08-07
DE2108064B2 (de) 1977-03-31
DK144674C (da) 1982-10-11

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