EP0596577A1 - Installation pour fabriquer des produits en fil - Google Patents

Installation pour fabriquer des produits en fil Download PDF

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Publication number
EP0596577A1
EP0596577A1 EP93203080A EP93203080A EP0596577A1 EP 0596577 A1 EP0596577 A1 EP 0596577A1 EP 93203080 A EP93203080 A EP 93203080A EP 93203080 A EP93203080 A EP 93203080A EP 0596577 A1 EP0596577 A1 EP 0596577A1
Authority
EP
European Patent Office
Prior art keywords
wire
carriage
supply
installation
wire material
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.)
Granted
Application number
EP93203080A
Other languages
German (de)
English (en)
Other versions
EP0596577B1 (fr
EP0596577B2 (fr
Inventor
Luc Hoorelbeke
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.)
Nedschroef Herentals NV
Original Assignee
Nedschroef Herentals NV
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19861467&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0596577(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nedschroef Herentals NV filed Critical Nedschroef Herentals NV
Publication of EP0596577A1 publication Critical patent/EP0596577A1/fr
Publication of EP0596577B1 publication Critical patent/EP0596577B1/fr
Application granted granted Critical
Publication of EP0596577B2 publication Critical patent/EP0596577B2/fr
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
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
    • B21K27/02—Feeding devices for rods, wire, or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/20—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes from stock of essentially unlimited length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus

Definitions

  • the invention relates to an installation used for making products of metal wire and in which installation they obtain their final shape by means of cold working.
  • Typical examples of such products are bolts, screws and sleeves.
  • Such installations are discontinuously fed with metal wire which is thereupon cut off in a so-called transfer press.
  • the cut off pieces are subsequently placed under various stamps and matrices by means of a transfer system, in which they are deformed.
  • it is very important that the volume of the cut off piece is highly constant. This is determined by constantly controlling the length of the cut off wire piece, as well as the diameter thereof.
  • Every transfer press has its own supply system operating discontinously and bringing the proper length of the wire under the cutting knife. After that the wire is cut off and brought into the actual press by the supply system. This supply system determines together with the cut off movement, that is to say of the knife, the accuracy of the length of the cut off wire piece.
  • the diameter of the wire is previously reduced by means of a draw plate. Reducing said diameter of the wire is effected in a wire drawing machine which may be either of the rotary or lineair type. In order to limit the number of necessary manoeuvres, these wire drawing machines were more and more positioned in alignment with the transfer press.
  • Rotary wire drawing machines supply wire to the transfer press with a constant lineair velocity, said transfer press discontinously working the wire.
  • This requires an intermediate reserve system continuously receiving the "wire input" of the wire drawing machine in relation to the pulsating working of the transfer press. Constructing such a reserve system encounters a great problem, particularly with wire diameters larger than 20 mm.
  • the concept with the lineair wire drawing machine is such that this is driven synchronously by the transfer press and continuously produces more drawn wire than the transfer press receives with its supply system.
  • This system is particularly used with large wire diameters, i.e. larger than 20 mm.
  • the invention aims at replacing the supply system of the transfer press by a much more powerful system which is capable of effecting the supply of the wire material and wire drawing directly in the transfer press. Then this new wire supplying and drawing system simultaneously delivers the exactly desired length of the cut off wire piece, as well as the precise wire diameter, these being two fundamendal conditions which should be met when cold working wire material in transfer presses.
  • the invention relates to an installation for making products of wire-shaped material, comprising a mechanism for intermittently supplying the wire material, a mechanism for reducing the diameter of the wire material, and a press mechanism for forming the wire material pieces into the desired shape, a cutting mechanism for the wire material pieces forming a part thereof.
  • this installation comprises a separate machine for intermittently supplying each time the desired length of the wire material, a separate machine for drawing the wire material to the desired diameter, and a separate machine for cutting off wire material pieces and pressing them into the desired products in the so-called transfer press.
  • the invention aims at removing these objections of the known installation.
  • the supply mechanism of the wire material is formed by a supply device incorporated in the press mechanism, said supply device also being provided with a wire drawing mechanism forming one unit therewith, one and another such that the supply mechanism, the wire drawing mechanism, the cutting mechanism and the press mechanism are combined into one single machine.
  • the present installation neither requires a coupling device nor the formation of a stock of wire material between the wire supply mechanism and the wire drawing mechanism and between the wire drawing mechanism and the press mechanism, respectively.
  • the entire installation has a much smaller number of parts than the known installation, thereby simplifying the maintenance of the installation.
  • the operation of the installation is much easier, because the operating person needs much less manoeuvres for putting in a new end of the wire stock. Since with the present installation the mass to be moved is much smaller than with the known installation, the production speed of the press mechanism can be increased.
  • the device formed by the supply and drawing mechanism comprises a carriage which is movable back and forth on first guides by means of a driving device, a wire clamp connected to the carriage, a fixedly positioned wire clamp and a draw plate mounted on the carriage.
  • the draw plate is mounted in a holder which is movable back and forth on second guides on the carriage, said guides being parallel to the first guides of the carriage.
  • the supply of wire material to the press mechanism may be interrupted, viz. by leaving open the wire clamp connected with the carriage and by keeping the fixedly positioned wire clamp closed.
  • this embodiment of the installation according to the invention it is also possible to draw back the wire material from the press mechanism, e.g. when the number of products to be produced is attained. This can be effected by changing the closing and opening movement of the wire clamp connected with the carriage and of the fixedly positioned wire clamp during the back and forth movement of the carriage.
  • the installation according to figure 1 is particularly meant for making products of metal wire and which in this installation obtain their final shape by means of cold working. Bolts, screws, sleeves and the like are typical examples of these products. However, the installation according to figure 1 could also, adapted or not, be used for making products of plastic wire or of other plastically deformable wire material.
  • the installation according to figure 1 comprises a wire supply mechanism 1, a wire drawing mechanism 2, a wire cutting mechanism 3 and a wire pressing mechanism 4 which according to the invention are combined into one machine.
  • the supply mechanism 1 (vide also figure 2) is provided with a carriage 5 which is movable back and forth on guides 6 which are mounted in an arm 7 of the frame 8 of the machine which is schematically drawn.
  • a "movable" clamp 9 is mounted, which means that the clamp 9 is fixedly positioned with respect to the carriage 5, but movably with respect to the frame 7, 8 of the machine.
  • the clamp 9 may be operated by a cylinder 10 which is mounted in the carriage 5 and serves for the transportation of the wire 11 in both directions.
  • the supply mechanism 1 further comprises a "fixed" clamp 12 attached to or fixedly connected to the frame 8 of the machine and which may be operated by means of a cylinder 13 through a toggle lever system 14.
  • One of the jaws of the fixed clamp 12, the lower jaw 12b, is slideably mounted in a guide 16 by means of an extension piece 15.
  • the jaws 9a and 9b of the movable clamp 9 and the jaws 12a and 12b of the fixed clamp 12 preferably operate in such a way that they simultaneously engage in pairs on the wire 11, i.e. alternately the jaws 9a, 9b simultaneously and the jaws 12a, 12b simultaneously.
  • the drawing mechanism 2 for reducing the diameter of the wire 11, comprising a holder 17 mounted on guides 18 which are parallel to the guides 6.
  • a draw plate 19 (or a different tool) is mounted for reducing the diameter of the wire 11.
  • the supply mechanism 1 further comprises a driving device 20 comprising a support 21 on the frame 8 of the machine, a shaft with a crank 22 driven intermittently by the press mechanism 4 or by a synchronous drive, on which crank an adjustable crank pin 23 is mounted which is pivotably connected with a connecting rod 24, a two-armed lever 25 being pivotably connected with the connecting rod 24 between its ends, which lever at its one end is pivotably connected with the carriage 5 and at its other end is slideably mounted with a rectangular recess 26 on a sliding block 27, which is pivotably mounted on an arm 28 attached to a worm wheel 29 being adjustable with a drive worm 30.
  • a driving device 20 comprising a support 21 on the frame 8 of the machine, a shaft with a crank 22 driven intermittently by the press mechanism 4 or by a synchronous drive, on which crank an adjustable crank pin 23 is mounted which is pivotably connected with a connecting rod 24, a two-armed lever 25 being pivotably connected with the connecting rod 24 between its ends, which lever at its one end is pivotably connected with the carriage 5
  • the wire cutting mechanism 3 comprising a back and forth movable cutting knife 31 perpendicularly to the wire 11, and a fixed opposing knife or anvil 32.
  • the cutting knife 32 is guided in a sleeve 33.
  • the press mechanism or the so-called transfer press 4 in the drawn embodiment is provided with four working stations 34, 35, 36 and 37, which number of stations, however, depending on the product to be produced, may be larger or smaller.
  • the four working stations 34-37 comprise matrices 34a-37a and stamps 34b-37b.
  • the transfer press 4 further comprises a discharge chute for the finished products.
  • the supply mechanism 1, i.e. the carriage 5, is drawn in figure 2 in its extreme left position and is moved in its extreme right position prior to the beginning of making products.
  • a pointed wire 11 is inserted through the draw plate 19 until the end portion of the wire 11 is inside the open clamp 9.
  • the clamp 12 is closed, meaning that the clamping jaws 12a and 12b are pressed onto the wire 11, whereafter the crank 22 is rotated about a half revolution and the carriage 5 is moved to the left, the diameter of the wire 11 being reduced to the desired size over the distance over which the carriage 5 is moved to the left.
  • the crank 22 stops rotating and the "movable" clamp 9 is closed and the clamp 12 is opened, whereafter the crank 22 again rotates about a half revolution and the carriage 5 is moved into its extreme right position and the wire 11 is transferred over the desired length further into the press mechanism.
  • the drivable knife 31 now cuts off a wire piece 11 a of the desired length and diameter from the wire 11.
  • the clamp 9 is opened and the carriage 5 is moved again to the left by means of the drive mechanism over the desired distance and the diameter of the wire 11 is reduced to the desired size by means of the draw plate 19 etc., as has been described above.
  • the length of the cut off wire piece 11 a is determined by the distance over which the carriage 5 is moved. This distance is roughly adjustable by moving the crank pin 22 on the crank 24 and can be adjusted more accurately, during operation of the machine, by adjusting the sliding block 27 in the recess 26 in the lever 25 by means of the worm and worm wheel mechanism 28-30.
  • the length of the cut off wire piece 11 a can be set very accurately. Because the diameter of the wire piece 11 a can be very accurately set to the desired value by means of the draw plate 19, wire pieces 11 a are obtained having exactly the proper volume, of which products 11 b are produced in the transfer press 4 and which leave the transfer press through the chute 38.
  • Both the movable clamp 9 and the fixed clamp 12 clamp onto the drawn wire end, i.e. wire which has precisely the proper diameter, so that the clamps can be adapted accurately to the wire diameter without causing damage to the wire.
  • the fixed clamp 12 is constructed heavier than the movable clamp 9, because the clamp 12 has to take the drawing force on the wire 11 when drawing the wire through the draw plate 19, and the clamp 9 merely has to transfer the wire 11.
  • the clamps 9 and 12 may be operated pneumatically, hydraulically or mechanically.
  • the draw plate 19 can be replaced by a roller system which then reduces the diameter of the wire 11 by means of a set of rollers.
  • the movement of the lever 25 could also be realized with a hydraulic or pneumatic cylinder, but such a cylinder is highly liable to wear and gives a much lesser accurate supply length, particularly at a high production speed of the transfer press 4, that is to say more than 30 products per minute.
  • the wire drawing supply system can also pull back the wire, supplied into the transfer press, from said transfer press. This is of particular importance in case not all wire should be supplied into the transfer press, e.g. when a predetermined number of products is attained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Forging (AREA)
  • Metal Extraction Processes (AREA)
EP93203080A 1992-11-03 1993-11-03 Installation pour fabriquer des produits en fil Expired - Lifetime EP0596577B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9201913A NL9201913A (nl) 1992-11-03 1992-11-03 Installatie voor de vervaardiging van producten uit draadvormig materiaal.
NL9201913 1992-11-03

Publications (3)

Publication Number Publication Date
EP0596577A1 true EP0596577A1 (fr) 1994-05-11
EP0596577B1 EP0596577B1 (fr) 1997-01-15
EP0596577B2 EP0596577B2 (fr) 2004-03-24

Family

ID=19861467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93203080A Expired - Lifetime EP0596577B2 (fr) 1992-11-03 1993-11-03 Installation pour fabriquer des produits en fil

Country Status (3)

Country Link
EP (1) EP0596577B2 (fr)
DE (1) DE69307461T3 (fr)
NL (1) NL9201913A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5724847A (en) * 1996-05-31 1998-03-10 The National Machinery Company Integrated wire feed and draw apparatus
WO1998035771A1 (fr) * 1997-02-17 1998-08-20 Besta Eisen- Und Stahlhandelsgesellschaft Mbh Installation pour le dressage, l'ecrouissage et le traitement ulterieur de fil metallique
KR100366554B1 (ko) * 2000-05-12 2002-12-31 김진배 볼트 성형을 위한 와이어 공급장치
EP1502675A2 (fr) * 1994-12-30 2005-02-02 Black & Decker Inc. Procédé et appareil de forgeage
EP1514617A1 (fr) * 2003-09-10 2005-03-16 SMS Meer GmbH Dispositif de tréfilage et méthode d'utilisation d'un dispositif de tréfilage
KR101180861B1 (ko) 2010-06-21 2012-09-07 (주)에스엠이엔지 봉합침 성형용 금형기
CN112045144A (zh) * 2020-08-26 2020-12-08 温州大学 一种多工位冷镦机主传动精准切料分割机构
EP3815805A1 (fr) * 2019-10-31 2021-05-05 Tecnopress s.r.l. Appareil de tréfilage linéaire continu pour une presse horizontale automatique de forgeage à froid
IT201900024412A1 (it) * 2019-12-18 2021-06-18 Tecnopress S R L Dispositivo per la realizzazione di un processo interconnesso di trascinamento e trafilatura lineare continua di un filo metallico in matassa, integrato con una pressa automatica orizzontale che produce fastener ed altri particolari metallici con la tecnica dello stampaggio a freddo
IT202200005141A1 (it) * 2022-03-16 2023-09-16 Tecnopress S R L “Impianto di trafilatura lineare continua perfezionato”

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2228746A (en) * 1938-06-27 1941-01-14 B W Mfg Company Combined feeding and cold drawing mechanism
US2740136A (en) * 1950-02-27 1956-04-03 Bulloneria E Viterie Italiana Method of producing blanks for roll threaded screws and the like by a combined forging and drawing action
FR2375928A1 (fr) * 1976-12-31 1978-07-28 Bernard Guy Machine destinee a la realisation de rayons de roues de cycles, motocycles ou autres vehicules, presentant une partie retreinte
EP0111800A2 (fr) * 1982-12-18 1984-06-27 R W M-Raster Werkzeugmaschinen GmbH Appareil d'alimentation par pinces pour feuillard ou fil

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2337881A (en) † 1941-09-16 1943-12-28 Ajax Mfg Co Wire drawing machine and method
US2728447A (en) † 1951-01-23 1955-12-27 Ajax Mfg Co Wire drawer
US2797779A (en) † 1954-09-01 1957-07-02 Mayfab Inc Travel bag with frame support
US2880054A (en) † 1956-05-21 1959-03-31 Joseph E Moore Process for reacting wool with organic diisocyanates in the presence of a tertiary amine
US3184943A (en) † 1960-09-06 1965-05-25 Ajax Mfg Co Wire shaping and drawing
US3273372A (en) † 1964-02-24 1966-09-20 Ajax Mfg Co Combined drawing and cut-off apparatus
US3599468A (en) † 1969-04-17 1971-08-17 Fastener Eng Inc Wire drawing and feeding apparatus
IT1214175B (it) † 1987-04-24 1990-01-10 Danieli Off Mecc Dispositivo di retrotrafilatura barre e procedimento relativo.
US4942796A (en) † 1988-08-03 1990-07-24 The National Machinery Company Stock feed apparatus for forging machines and the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2228746A (en) * 1938-06-27 1941-01-14 B W Mfg Company Combined feeding and cold drawing mechanism
US2740136A (en) * 1950-02-27 1956-04-03 Bulloneria E Viterie Italiana Method of producing blanks for roll threaded screws and the like by a combined forging and drawing action
FR2375928A1 (fr) * 1976-12-31 1978-07-28 Bernard Guy Machine destinee a la realisation de rayons de roues de cycles, motocycles ou autres vehicules, presentant une partie retreinte
EP0111800A2 (fr) * 1982-12-18 1984-06-27 R W M-Raster Werkzeugmaschinen GmbH Appareil d'alimentation par pinces pour feuillard ou fil

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1502675A2 (fr) * 1994-12-30 2005-02-02 Black & Decker Inc. Procédé et appareil de forgeage
EP1502675A3 (fr) * 1994-12-30 2005-04-20 Black & Decker Inc. Procédé et appareil de forgeage
DE19722287B4 (de) * 1996-05-31 2009-04-02 National Machinery LLC, Tiffin Drahtvorschub- und Ziehvorrichtung
BE1012430A5 (fr) * 1996-05-31 2000-11-07 Nat Machinery Co Dispositif d'etirage et d'alimentation de fil integre.
US5724847A (en) * 1996-05-31 1998-03-10 The National Machinery Company Integrated wire feed and draw apparatus
WO1998035771A1 (fr) * 1997-02-17 1998-08-20 Besta Eisen- Und Stahlhandelsgesellschaft Mbh Installation pour le dressage, l'ecrouissage et le traitement ulterieur de fil metallique
KR100366554B1 (ko) * 2000-05-12 2002-12-31 김진배 볼트 성형을 위한 와이어 공급장치
EP1514617A1 (fr) * 2003-09-10 2005-03-16 SMS Meer GmbH Dispositif de tréfilage et méthode d'utilisation d'un dispositif de tréfilage
US7096706B2 (en) 2003-09-10 2006-08-29 Sms Meer Gmbh Drawing apparatus and method of operating same
DE10341726B4 (de) * 2003-09-10 2008-09-04 Sms Meer Gmbh Ziehvorrichtung und Verfahren zum Betreiben einer Ziehvorrichtung
KR101180861B1 (ko) 2010-06-21 2012-09-07 (주)에스엠이엔지 봉합침 성형용 금형기
EP3815805A1 (fr) * 2019-10-31 2021-05-05 Tecnopress s.r.l. Appareil de tréfilage linéaire continu pour une presse horizontale automatique de forgeage à froid
IT201900024412A1 (it) * 2019-12-18 2021-06-18 Tecnopress S R L Dispositivo per la realizzazione di un processo interconnesso di trascinamento e trafilatura lineare continua di un filo metallico in matassa, integrato con una pressa automatica orizzontale che produce fastener ed altri particolari metallici con la tecnica dello stampaggio a freddo
CN112045144A (zh) * 2020-08-26 2020-12-08 温州大学 一种多工位冷镦机主传动精准切料分割机构
IT202200005141A1 (it) * 2022-03-16 2023-09-16 Tecnopress S R L “Impianto di trafilatura lineare continua perfezionato”

Also Published As

Publication number Publication date
NL9201913A (nl) 1994-06-01
DE69307461T3 (de) 2004-11-25
DE69307461T2 (de) 1997-08-14
EP0596577B1 (fr) 1997-01-15
EP0596577B2 (fr) 2004-03-24
DE69307461D1 (de) 1997-02-27

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