ITMI20090428A1 - MOTORIZED CUTTING BENCH OF SHEETS OF COMPOSITE FABRICS ACCORDING TO A DESIRED SHAPING - Google Patents
MOTORIZED CUTTING BENCH OF SHEETS OF COMPOSITE FABRICS ACCORDING TO A DESIRED SHAPING Download PDFInfo
- Publication number
- ITMI20090428A1 ITMI20090428A1 IT000428A ITMI20090428A ITMI20090428A1 IT MI20090428 A1 ITMI20090428 A1 IT MI20090428A1 IT 000428 A IT000428 A IT 000428A IT MI20090428 A ITMI20090428 A IT MI20090428A IT MI20090428 A1 ITMI20090428 A1 IT MI20090428A1
- Authority
- IT
- Italy
- Prior art keywords
- sheet
- composite fabric
- cutting table
- fabric according
- motorized
- Prior art date
Links
- 238000005520 cutting process Methods 0.000 title claims description 48
- 239000002131 composite material Substances 0.000 title claims description 22
- 239000004744 fabric Substances 0.000 title claims description 19
- 238000007493 shaping process Methods 0.000 title 1
- 230000033001 locomotion Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
- B23Q1/5468—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed parallelly by a single rotating pair
-
- 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
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
-
- 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
-
- 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
- B26D7/01—Means for holding or positioning work
- B26D7/018—Holding the work by suction
-
- 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
- B26D7/20—Cutting beds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Treatment Of Fiber Materials (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
Descrizione della domanda di brevetto per invenzione industriale avente per titolo: Description of the patent application for industrial invention entitled:
“Banco di taglio motorizzato di fogli di tessuti compositi secondo una desiderata sagomatura” "Motorized cutting table for sheets of composite fabrics according to a desired shape"
CAMPO DELL’INVENZIONE FIELD OF THE INVENTION
Il presente trovato ha come oggetto un banco di taglio motorizzato per eseguire il taglio di un foglio di tessuto composito secondo una desiderata sagomatura. The present invention relates to a motorized cutting table for cutting a sheet of composite fabric according to a desired shape.
Questo banco di taglio trova uno specifico e vantaggioso impiego nel settore del taglio sagomato di tessuti compositi da usare per la preparazione di pezzi, particolarmente leggeri e resistenti agli urti, di carrozzeria di autoveicoli e di aeromobili, scafi di imbarcazioni e similari che vengono ottenuti sovrapponendo strati di fibre su uno stampo di modellatura formando così i cosiddetti materiali compositi. This cutting table finds a specific and advantageous use in the sector of shaped cutting of composite fabrics to be used for the preparation of particularly light and impact-resistant pieces of vehicle and aircraft bodywork, boat hulls and the like which are obtained by overlapping layers of fibers on a molding mold thus forming so-called composite materials.
SFONDO TECNICO DELL’INVENZIONE TECHNICAL BACKGROUND OF THE INVENTION
Come noto, i materiali compositi, vengono ottenuti con strati sovrapposti di fibre che vengono saldati insieme per mezzo di calore o pressione, in modo da formare un unico materiale composito. As known, composite materials are obtained with superimposed layers of fibers which are welded together by means of heat or pressure, so as to form a single composite material.
In particolare, per la realizzazione dei manufatti in materiale composito, vengono impiegati diversi prodotti quali ad esempio fibre di carbonio, vetro, kevlar e tessuti pre-impregnati di resina avvolti in bobine di notevole peso e dimensioni dalle quali vengono ritagliate fogli o pezze di cosiddetto tessuto composito le quali vengono sottoposte ad una taglio per ottenere dei manufatti opportunamente sagomati. In particular, for the production of composite material products, various products are used such as carbon fibers, glass, Kevlar and pre-impregnated resin fabrics wound in reels of considerable weight and size from which sheets or pieces of so-called composite fabric which are subjected to a cut to obtain suitably shaped products.
Comunemente per eseguire l’operazione di taglio sagomato di un materiale composito si utilizza un semplice tavolo in ferro sul quale viene adagiato il materiale composito il quale viene sagomato mediante un taglierino azionato manualmente. Commonly, to perform the shaped cutting operation of a composite material, a simple iron table is used on which the composite material is placed, which is shaped using a manually operated cutter.
Sono noti anche sistemi di taglio completamente automatizzati che impiegano un plotter controllato da un sistema computerizzato; questo tipo di sistema si presta bene per lavorazioni in grande serie ma risulta estremamente costoso e laborioso per lavori artigianali o in piccola serie. Fully automated cutting systems are also known which use a plotter controlled by a computerized system; this type of system is suitable for large series production but is extremely expensive and laborious for small series or artisan works.
SCOPI DELL’INVENZIONE AIMS OF THE INVENTION
Il banco da taglio motorizzato del presente trovato nasce dall’esigenza di ridurre la fatica, il rischio e migliorare la manualità dell’operatore durante la fase produttiva del taglio dei tessuti,aumentandone l’efficienza e quindi anche la produttività. La sua funzione é quella di offrire un comodo e sicuro supporto per tagliare il tessuto composito tramite una lama a movimento alternativo. Secondo questo trovato l’operatore comanda manualmente il percorso di taglio da eseguire per mezzo di un pomolo situato sulla parte finale di un braccio snodato autoportante fissato al basamento. The motorized cutting table of the present invention arises from the need to reduce fatigue, risk and improve the operator's dexterity during the production phase of cutting fabrics, increasing their efficiency and therefore also productivity. Its function is to offer a comfortable and safe support for cutting the composite fabric using a reciprocating blade. According to this invention, the operator manually controls the cutting path to be performed by means of a knob located on the final part of a self-supporting articulated arm fixed to the base.
Su un’estremità di tale braccio snodato é ubicata la motorizzazione che permette il movimento alternativo della lama di taglio. Il materiale da tagliare viene appoggiato sul piano di lavoro al di sotto del braccio e trattenuto da una depressione ottenuta tramite un apposito aspiratore. L’operatore quindi non deve più esercitare una forza di traino del taglierino come in precedenza, ma deve solo guidare il braccio snodato lungo il percorso tracciato sul tessuto. On one end of this articulated arm there is the motorization that allows the alternative movement of the cutting blade. The material to be cut is placed on the work surface under the arm and held by a depression obtained by means of a special aspirator. The operator therefore no longer has to exert a pulling force of the cutter as before, but only has to guide the articulated arm along the path marked on the fabric.
La macchina é inoltre dotata di tutti i dispositivi di sicurezza nel pieno rispetto delle norme vigenti. The machine is also equipped with all safety devices in full compliance with current regulations.
SOMMARIO DELL’INVENZIONE SUMMARY OF THE INVENTION
Il sistema di taglio di materiali compositi qui descritto é costituito, come di norma, da un banco forato ricoperto da un tappeto di gomma che presenta sulla sua superficie superiore peduncoli che durante l’operazione di taglio si piegano a seguito del contatto con la lama di taglio senza essere tagliati da quest’ultima. Al di sotto del banco viene realizzato un effetto di aspirazione per la trattenuta del foglio di materiale da tagliare. The system for cutting composite materials described here is constituted, as usual, by a perforated bench covered with a rubber mat which has peduncles on its upper surface which during the cutting operation bend as a result of contact with the cutting blade. cut without being cut by the latter. Below the bench, a suction effect is created to hold the sheet of material to be cut.
In conformità all’invenzione, il dispositivo di taglio è montato su un’estremità di un primo braccio di una coppia di bracci tra loro articolati dove l’estremità libera del secondo braccio è vincolata al banco di taglio di modo che il dispositivo di taglio può assumere qualsiasi posizione in un piano orizzontale. A sua volta il dispositivo di taglio è costituito da una lama a moto alternativo comandata da un motore ad eccentrico e la lama è orientabile nella migliore direzione di taglio mediante una manopola ruotabile comandata dalla mano dell’operatore che la manovra in modo da seguire le linee di taglio sagomato tracciate sul tessuto. In accordance with the invention, the cutting device is mounted on one end of a first arm of a pair of mutually articulated arms where the free end of the second arm is constrained to the cutting table so that the cutting device can assume any position in a horizontal plane. In turn, the cutting device consists of a reciprocating-motion blade controlled by an eccentric motor and the blade can be oriented in the best cutting direction by means of a rotatable knob controlled by the hand of the operator who maneuvers it in order to follow the lines. of shaped cut traced on the fabric.
BREVE DESCRIZIONE DEI DISEGNI BRIEF DESCRIPTION OF THE DRAWINGS
Il trovato viene qui di seguito dettagliatamente descritto, a titolo esemplificativo e non limitativo, con riferimento agli allegati disegni, nei quali: The invention is described in detail below, by way of non-limiting example, with reference to the attached drawings, in which:
la figura 1 è una vista in alzato laterale del banco di taglio in conformità alla presente invenzione; Figure 1 is a side elevation view of the cutting table in accordance with the present invention;
la Figura 2 é una vista in pianta dall’alto di tale banco di taglio; Figure 2 is a top plan view of this cutting table;
la Figura 3 mostra in sezione verticale il dispositivo di comando della lama di taglio a movimento alternativo verticale; Figure 3 shows in vertical section the control device of the cutting blade with vertical reciprocating movement;
la Figura 4 mostra tale dispositivo di taglio in alzato frontale; e Figure 4 shows this cutting device in front elevation; And
la Figura 5 mostra un particolare del sistema di creazione del moto alternativo verticale per la lama di taglio in scala maggiore rispetto alla Figura 3. Figure 5 shows a detail of the system for creating the vertical reciprocating motion for the cutting blade on a larger scale than in Figure 3.
Facendo riferimento alle Figure 1 e 2 in esse é rappresentata una forma di realizzazione esemplificativa ma non limitativa di un banco di taglio in conformità alla presente invenzione. With reference to Figures 1 and 2 there is shown an exemplary but non-limiting embodiment of a cutting table in accordance with the present invention.
I tale forma di realizzazione il piano di lavoro forato 10 è supportato da una base 12 mobile su rotelle pivotanti 14, la quale base 12 può contenere un sistema aspirante collegato ad un tubo di scarico dell’aria 16 oppure tale tubo 16 può un tubo di collegamento ad un sistema aspirante esterno. In this embodiment, the perforated worktop 10 is supported by a base 12 movable on pivoting wheels 14, which base 12 can contain a suction system connected to an air exhaust pipe 16 or said pipe 16 can a connection to an external suction system.
In conformità all’invenzione al piano di lavoro 10 è collegato un braccio snodato 18 costituito da un primo braccio 20 collegato ad una sua estremità al piano di lavoro 10 mediante un perno 19 supportato da una mensola 21 mentre l’altra sua estremità è collegata ad un secondo braccio 22 mediante un perno di snodo 24 la cui altra estremità supporta un sistema 26 di comando della lama di taglio 28 che passa attraverso una fessura praticata in un piattello premitessuto 62. In accordance with the invention, an articulated arm 18 is connected to the work surface 10 consisting of a first arm 20 connected at one end to the work surface 10 by means of a pin 19 supported by a shelf 21 while its other end is connected to a second arm 22 by means of an articulation pin 24 whose other end supports a control system 26 for the cutting blade 28 which passes through a slot made in a fabric-holding plate 62.
Con riferimento in particolare alle Figure 3 e 4, l’estremità del braccio 22 opposta al perno di snodo 24 supporta una bussola forata 30 entro la quale è inserita a scorrimento una colonnetta 32 supportata in modo elastico da una molla ad elica cilindrica di compressione 34 che si appoggia inferiormente sulla bussola 30 e superiormente su una spalla 36 di un ingrossamento 38 di detta colonnetta 32. La colonnetta 32, guidata da bussole superiore ed inferiore 31, presenta un foro 33 presentante lungo il suo asse verticale diametri di alesaggio diversi ed accoglie un’asta verticale 40 la quale, in corrispondenza della sua estremità inferiore supporta la lama di taglio 28 tramite un mandrino di bloccaggio 42 al di sopra del quale è previsto un collarino 44 di limitazione del movimento alternativo verticale di taglio mentre sulla sua estremità superiore è fissato un pomolo 46 mediante un grano o simile 48. Un cuscinetto a sfere 50 è inserito nella parte inferiore del pomolo 46 e montato su una bussola 52 per esercitare una funzione di guida per il pomolo 46. Pertanto la rotazione angolare del pomolo 46 provoca la rotazione angolare della lama 28 per consentire la sua orientazione ottimale nella direzione della linea di taglio da seguire durante l’operazione di taglio sagomato. With reference in particular to Figures 3 and 4, the end of the arm 22 opposite the articulation pin 24 supports a perforated bush 30 into which a column 32 is slidably supported by a cylindrical compression helical spring 34 which rests below on the bush 30 and above on a shoulder 36 of an enlargement 38 of said column 32. The column 32, guided by upper and lower bushings 31, has a hole 33 having different bore diameters along its vertical axis and accommodates a vertical rod 40 which, in correspondence with its lower end, supports the cutting blade 28 by means of a locking mandrel 42 above which a collar 44 is provided for limiting the reciprocating vertical cutting movement while on its upper end is fixed a knob 46 by means of a dowel or the like 48. A ball bearing 50 is inserted in the lower part of the knob 46 and mounted on a bush 52 to exercise a guiding function for the knob 46. Therefore the angular rotation of the knob 46 causes the angular rotation of the blade 28 to allow its optimal orientation in the direction of the cutting line to be followed during the shaped cutting operation.
Il movimento alternativo verticale della lama di taglio 28 è ottenuto da un motore elettrico 54 ad eccentrico in cui il moto rotatorio del suo albero di uscita 56 su cui è montato il cuscinetto a sfere 58 viene trasformato in moto alternativo mediante un eccentrico il cui asse di rotazione è leggermente disassato rispetto all’asse di rotazione dell’albero di detto motore elettrico. L’anello esterno del cuscinetto a sfere 60 dell’eccentrico è in costante contatto con due spalle anulari contrapposte e distanziate 62 formate su detta asta 40 per cui il disassamento dei cuscinetti a sfere 58 e 60 viene trasformato in un movimento alternativo con spostamento dell’asta 40 pari a due volte il valore di detto disassamento. Un’asta di guida 57, é fissata al detto secondo braccio 22, e scorre entro un foro passante verticale 59 previsto ad un’estremità del corpo del motore elettrico 54. The vertical reciprocating movement of the cutting blade 28 is obtained by an eccentric electric motor 54 in which the rotary motion of its output shaft 56 on which the ball bearing 58 is mounted is transformed into reciprocating motion by means of an eccentric whose axis of rotation is slightly offset with respect to the axis of rotation of the shaft of said electric motor. The outer ring of the ball bearing 60 of the eccentric is in constant contact with two opposite and spaced annular shoulders 62 formed on said rod 40 so that the offset of the ball bearings 58 and 60 is transformed into a reciprocating movement with displacement of the rod 40 equal to twice the value of said offset. A guide rod 57 is fixed to said second arm 22, and slides within a vertical through hole 59 provided at one end of the body of the electric motor 54.
Avendo descritto una forma di realizzazione esemplificativa ma non limitativa dell’invenzione, é chiaro che il presente trovato è suscettibile di numerose modifiche e varianti tutte rientranti nel concetto inventivo espresso nelle rivendicazioni allegate, mentre i dettagli tecnici potranno variare a seconda delle particolari esigenze e dello stato della tecnica. Having described an exemplary but non-limiting embodiment of the invention, it is clear that the present invention is susceptible of numerous modifications and variations, all of which are within the inventive concept expressed in the attached claims, while the technical details may vary according to the particular needs and requirements. state of the art.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000428A ITMI20090428A1 (en) | 2009-03-20 | 2009-03-20 | MOTORIZED CUTTING BENCH OF SHEETS OF COMPOSITE FABRICS ACCORDING TO A DESIRED SHAPING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000428A ITMI20090428A1 (en) | 2009-03-20 | 2009-03-20 | MOTORIZED CUTTING BENCH OF SHEETS OF COMPOSITE FABRICS ACCORDING TO A DESIRED SHAPING |
Publications (1)
Publication Number | Publication Date |
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ITMI20090428A1 true ITMI20090428A1 (en) | 2010-09-21 |
Family
ID=41445541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT000428A ITMI20090428A1 (en) | 2009-03-20 | 2009-03-20 | MOTORIZED CUTTING BENCH OF SHEETS OF COMPOSITE FABRICS ACCORDING TO A DESIRED SHAPING |
Country Status (1)
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IT (1) | ITMI20090428A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US245149A (en) * | 1881-08-02 | fowler | ||
GB2103987A (en) * | 1981-08-14 | 1983-03-02 | Reichert Gmbh And Co Kg Spezia | A cutting machine for sheet material |
EP0159526A1 (en) * | 1984-04-14 | 1985-10-30 | Krauss u. Reichert GmbH + Co. KG Spezialmaschinenfabrik | Apparatus for cutting flat materials |
EP0325283A1 (en) * | 1988-01-22 | 1989-07-26 | Km Cloth Cutting Machine Co. Ltd. | Cloth cutting apparatus |
-
2009
- 2009-03-20 IT IT000428A patent/ITMI20090428A1/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US245149A (en) * | 1881-08-02 | fowler | ||
GB2103987A (en) * | 1981-08-14 | 1983-03-02 | Reichert Gmbh And Co Kg Spezia | A cutting machine for sheet material |
EP0159526A1 (en) * | 1984-04-14 | 1985-10-30 | Krauss u. Reichert GmbH + Co. KG Spezialmaschinenfabrik | Apparatus for cutting flat materials |
EP0325283A1 (en) * | 1988-01-22 | 1989-07-26 | Km Cloth Cutting Machine Co. Ltd. | Cloth cutting apparatus |
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