EP0464625B1 - Cutting head for sheet-like products, particularly fabrics for the clothing industry - Google Patents

Cutting head for sheet-like products, particularly fabrics for the clothing industry Download PDF

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Publication number
EP0464625B1
EP0464625B1 EP91110543A EP91110543A EP0464625B1 EP 0464625 B1 EP0464625 B1 EP 0464625B1 EP 91110543 A EP91110543 A EP 91110543A EP 91110543 A EP91110543 A EP 91110543A EP 0464625 B1 EP0464625 B1 EP 0464625B1
Authority
EP
European Patent Office
Prior art keywords
cutting head
head according
movable
slider
cutting
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
EP91110543A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0464625A2 (en
EP0464625A3 (en
Inventor
Alberto Peron
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.)
PERON, ALBERTO
TAMIELLO, ALESSANDRO
Original Assignee
Tamiello Alessandro
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 Tamiello Alessandro filed Critical Tamiello Alessandro
Publication of EP0464625A2 publication Critical patent/EP0464625A2/en
Publication of EP0464625A3 publication Critical patent/EP0464625A3/en
Application granted granted Critical
Publication of EP0464625B1 publication Critical patent/EP0464625B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/086—Electric, magnetic, piezoelectric, electro-magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
    • B26F1/3813—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work
    • B26F1/382—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge

Definitions

  • the present invention relates to a cutting head for sheet-like products, particularly fabrics for the clothing industry.
  • Machines for cutting flexible sheet-like products with a mechanically actuated cutting head are known.
  • the head supports a cutting blade which is subjected to a reciprocating motion by means of mechanical transmission means which are in turn connected to an electric motor of preset power.
  • Each type of machine has to be provided with an adapted motor having technical characteristics adequate to the physical and qualitative characteristics of the material to be cut, as well as to the thickness and number of layers of the products being processed.
  • the moving mechanical parts furthermore require frequent maintenance in order to prevent the failures and wear to which they are normally subject.
  • a cutting apparatus which comprises all the features mentioned in claim 1.
  • the driving mechanism of this known apparatus comprises eccentric members suitable for transforming the rotary motion of a motor into linear reciprocating motion of the cutting blade and therefore it suffers the typical disadvantages of the conventional driving mechanisms.
  • a punching machine which has an electromagnetic driving mechanism including a solenoid assembly enclosing a fixed core and a movable core captive to a plunger carrying the punch.
  • the structure of the solenoid assembly is such that the movable core is only partially permeated by the electromagnetic field thus resulting in a reduced efficiency.
  • the control means for the driving mechanism is responsive to the movement of the housing with respect to the workpiece and cannot be adjusted at will.
  • the aim of the present invention is to eliminate the disadvantages described above by providing a cutting head which, by virtue of its peculiar characteristics, has considerable flexibility and readiness in use, reduced operating costs, limited power losses and, the greatest reliability and safety in use.
  • a particular object of the invention is to reduce the number of mechanical moving parts to be subjected to adjustment.
  • a further object is to provide a cutting head having component parts that can be obtained easily and can furthermore be rapidly assembled without requiring constructive complications.
  • the cutting head according to the invention is adapted to be associated with an element M of a per se known machine, which can move bidirectionally in a direction which is parallel to the plane of arrangement G of the products to be cut, following a path which is defined by the cutting plane.
  • the head can be removably fixed to the element M by means of an anchoring head 2 which is fixed by means of bolts 3 or of other equivalent elements.
  • the head 1 furthermore comprises an upper fixed body 4 and a lower slider 5 which can move in a direction which is substantially perpendicular to the plane of arrangement G of the products P, along guides 6 which are rigidly associated with the plate 2.
  • a stop element 7 for a cutting blade 8 which protrudes beyond the anchoring plate 2 is provided at the free end of the slider 5.
  • the blade 8 thus follows the movements of the slider 5 so as to interact with the products P to be cut.
  • electromagnetic means which act directly on the blade 8 to cause its controlled oscillation.
  • Said electromagnetic means comprise a fixed element, which is rigidly associated with the body of the head and is generally indicated by A, and a movable element, which is mounted on the slider 5 and is generally indicated by B.
  • the fixed element A is enclosed within the upper body 4, which has a cylindrical symmetry, and comprises a central core 9, which also has a cylindrical shape and is provided with an axial through cavity 10.
  • a substantially torus-like permanent magnet 11 is inserted between the body 4 and the core 9, and its constant internal diameter defines, together with the outer diameter of the core 9, an annular interspace 12.
  • the permanent magnet 11 can be made of highly stable ferromagnetic materials, such as for example those belonging to the series of rare earths or lanthanoids.
  • the movable element B is formed by a support 13 made of insulating material having a substantially cylindrical shape, on which a certain number of turns n of a conductor made of copper or the like is wound so as to define a solenoid 14.
  • the assembly constituted by the solenoid 14 wound on the support 13 has such dimensions as to slide freely and within the annular cavity 12 coaxially thereto.
  • the support 13 is furthermore rigidly fixed to the end of the slider 5 which is opposite to the blade 8 in a position which is approximately coaxial to said blade.
  • the number of turns n, the diameter ⁇ of the conductor and the diameter D of the solenoid 14 can be determined as a function of the required power, by means of calculations which are within the capabilities of any expert in the field.
  • the terminals of the solenoids 14 are connected, by means of conductors 15, 16, to a source of electric current L. If the energization current is alternating, the magnetic field generated by the solenoid 14 varies in a cyclic manner in direction and intensity, causing an oscillation in the slider 5 which in turn causes a reciprocating motion of the blade 8 with a frequency which is equal to that of the current and an extent which is variable according to the frequency and the cutting resistance opposed by the products P.
  • control unit 17 which connects the movable electromagnet 10 to the electric power supply line L.
  • the control unit 17 has, inside it, per se known circuits for adjusting the frequency and the current, as well as possible external indication elements, such as a digital display 18, and actuation means such as buttons or keys 19.
  • the electric parts of the head can of course be provided with the usual safety devices provided for the equipment of machine tools.
  • Elastic means constituted by a spring 20 which is anchored to the slider 5 so as to support it in a position of equilibrium, can be interposed between the fixed part and the movable part of the electromagnetic means.
  • a central rod 21 which is rigidly associated with the slider and can slide within the axial cavity 10 of the core 9, with the optional interposition of a sliding sheath 22 made of antifriction material.
  • Adjustable abutments, made of shock-absorbing material can be provided in the wall of the core which faces the slider, in order to avoid unwanted overrunning strokes.
  • the element M of the cutting machine is moved by per se known motor means, pulling the head 1 along the plane of arrangement G along the contour of the products P to be cut.
  • the control unit is adjusted beforehand so as to select the most appropriate values for the frequency and intensity of the solenoid's energization current.
  • the blade oscillates about its equilibrium position, exploiting the principle of electromotive forces typical of electric motors.
  • the materials employed may be any according to the requirements and to the state of the art.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Control Of Cutting Processes (AREA)
EP91110543A 1990-06-29 1991-06-26 Cutting head for sheet-like products, particularly fabrics for the clothing industry Expired - Lifetime EP0464625B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8559290 1990-06-29
IT08559290A IT1243125B (it) 1990-06-29 1990-06-29 Testa di taglio per prodotti laminari, particolarmente tessuti per la industria delle confezioni

Publications (3)

Publication Number Publication Date
EP0464625A2 EP0464625A2 (en) 1992-01-08
EP0464625A3 EP0464625A3 (en) 1992-05-20
EP0464625B1 true EP0464625B1 (en) 1995-09-20

Family

ID=11328625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91110543A Expired - Lifetime EP0464625B1 (en) 1990-06-29 1991-06-26 Cutting head for sheet-like products, particularly fabrics for the clothing industry

Country Status (3)

Country Link
EP (1) EP0464625B1 (it)
DE (1) DE69113138D1 (it)
IT (1) IT1243125B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109910085A (zh) * 2019-04-01 2019-06-21 杭州爱科自动化技术有限公司 一种图文刀装置及其工作方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306356A (en) * 1980-06-09 1981-12-22 Eastman Machine Company Punching machine
DE3446899C1 (de) * 1984-12-21 1986-12-18 G. O. Stumpf GmbH & Co KG, 7421 Mehrstetten Stossmessermaschine
US4653362A (en) * 1985-05-22 1987-03-31 Gerber Scientific Inc. Cutting apparatus with heated blade for cutting thermoplastic fabrics and related method of cutting
JPS63115170A (ja) * 1986-10-31 1988-05-19 Dainippon Screen Mfg Co Ltd カツテイングヘツドを備えた自動描画機

Also Published As

Publication number Publication date
IT9085592A1 (it) 1991-12-29
DE69113138D1 (de) 1995-10-26
IT9085592A0 (it) 1990-06-29
EP0464625A2 (en) 1992-01-08
EP0464625A3 (en) 1992-05-20
IT1243125B (it) 1994-05-24

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