EP0596577B2 - Installation pour fabriquer des produits en fil - Google Patents

Installation pour fabriquer des produits en fil Download PDF

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Publication number
EP0596577B2
EP0596577B2 EP93203080A EP93203080A EP0596577B2 EP 0596577 B2 EP0596577 B2 EP 0596577B2 EP 93203080 A EP93203080 A EP 93203080A EP 93203080 A EP93203080 A EP 93203080A EP 0596577 B2 EP0596577 B2 EP 0596577B2
Authority
EP
European Patent Office
Prior art keywords
wire
carriage
supply
guides
clamp
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
EP93203080A
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German (de)
English (en)
Other versions
EP0596577A1 (fr
EP0596577B1 (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
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Filing date
Publication date
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Application filed by Nedschroef Herentals NV filed Critical Nedschroef Herentals NV
Publication of EP0596577A1 publication Critical patent/EP0596577A1/fr
Application granted granted Critical
Publication of EP0596577B1 publication Critical patent/EP0596577B1/fr
Publication of EP0596577B2 publication Critical patent/EP0596577B2/fr
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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 discontinuously 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 linear 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 linear velocity, said transfer press discontinuously 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 linear 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 relates to an installation for making products of wire-shaped material according to the preamble of claim 1.
  • Such an installation is known from US-A-2,228,746. This known installation occupies a great deal of space. Furthermore this installation operates inaccurately as far as the volume of the cut off wire material pieces is concerned.
  • the invention aims at removing these objections of the known installation.
  • 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. Furthermore, a compact and at the same time a robust supply and drawing mechanism for the wire material is obtained.
  • 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 mechanism 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 fixed on 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 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 38 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 dosed 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 11a 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 11a is determined by the distance over which the carriage 5 is moved. This distance is roughly adjustable by moving the crank pin 23 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.
  • 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 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 less 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)

Claims (5)

  1. Installation de fabrication de produits en matériaux en forme de fil, comprenant un mécamisme (1) pour fournir, de façon intermittente, du fil (11), un mécanisme (2) pour réduire le diamètre du fil et une presse (4) pur former des pièces de matériau en forme de fil avec la configuration désirée, un mécanisme de coupe (3) des pièces en fil, formant une partie de celle-ci, dans laquelle ledit mécanisme fournissant le fil (11) est formé d'un dispositif alimentation (1) incorporé à la presse (4), ledit dispositif d'alimentation étant également pourvu d'un mécanisme d'étirage (2) du fil, formant un ensemble avec clelui-ci, l'un et l'autre tels que le mécanisme d'alimentation (1), le mécanisme de traction de fil (2), le mécanisme de coupe (3) et la presse (4) composent une seule machine, caractèrisée en ce que le dispositif formé par les mécanismes d'alimentation et d'étirage (1,2) comprend un chariot (5), mobile vers l'arrieère et vers l'avant sur des premiers guides (6) au moyen d'un dispositif d'entraínement (20), d'une bride de maintien du fil (9) fixée au chariot (5), d'une bride fixe (12) de maintien du fil et d'une plaque d'etirage (19) montée sur le chariot (5) arrière et - dans la direction de fournissement - en amont de la bride de maintien du fil (9) qui est fixé au chariot (5), dans lequel les deux brides de maintien du fil (9 ; 12) sont chaques constituées par des paires de mâchoire de bride (9a, 9b ; 12a, 12b), chaque paire étant pourvu d'une mâchoire de bride qui est mobile par rapport au fil vers et retour par rapport au fil dans un plan radial, les brides etant actionnées de facon pneumatique, hydraulique ou méchanique.
  2. Installation selon la revendication 1, caractérisée en ce que la plaque d'etirage (19) est montée sur un support (17) mobile vers l'avant et vers l'arrière sur de seconds guides (18) du chariot (5), lesdits guides étant parallèles aux premiers guides (6) du chariot (5).
  3. Installation selon la revendication 1 ou 2, caractérisée en ce que les guides (6) du chariot (5) et la bride fixe (12) de maintien du fil sont montés sur le bâti de la presse (3,4).
  4. Installation selon une ou plusieurs des revendications précédentes, caractérisée en ce que le mécanisme d'alimentation (1) en fil (11) est pourvu d'un ensemble mainvelle et bielle (22-24), la longueur (l) du bras de manivelle étant variable, et d'un levier deux bras (25), relié en pivotement à la bielle (24) en un point situé entre ses extrémités, relié en pivotement par l'une de ses extrémités au chariot (5) et maintenu à son autre extrémité par un pivot réglable (27).
  5. Installation selon la revendication 4, caractérisée en ce que l'autre extrémité du levier à deux bras (25) est pourvue d'une fente longitudinale (26) dans laquelle est monté un bloc coulissant (27), relié en pivotement à un bras (28) réuni à une roue à vis (29) puvant être entraínée à láide d'une vis sans fin (30).
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 EP0596577A1 (fr) 1994-05-11
EP0596577B1 EP0596577B1 (fr) 1997-01-15
EP0596577B2 true 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)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5700113A (en) * 1994-12-30 1997-12-23 Black & Decker Inc. Spade-type boring bit and an associated method and apparatus for forming metallic parts
US5724847A (en) * 1996-05-31 1998-03-10 The National Machinery Company Integrated wire feed and draw apparatus
DE19705945A1 (de) * 1997-02-17 1998-08-20 Besta Eisen Und Stahlhandelsge Anlage zum Richten, Kaltverfestigen und anschließendem Bearbeiten von Drahtmaterial
KR100366554B1 (ko) * 2000-05-12 2002-12-31 김진배 볼트 성형을 위한 와이어 공급장치
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
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
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
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”

Citations (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
EP0288086A2 (fr) † 1987-04-24 1988-10-26 DANIELI & C. OFFICINE MECCANICHE S.p.A. Dispositif d'emboutissage de barres par retournement de l'ebauche et procédé pour cela
US4942796A (en) † 1988-08-03 1990-07-24 The National Machinery Company Stock feed apparatus for forging machines and the like

Family Cites Families (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
DE3247001A1 (de) * 1982-12-18 1984-06-20 RWM-Raster-Werkzeugmaschinen GmbH, 7136 Ötisheim Zangenvorschubeinrichtung fuer band- oder drahtmaterial

Patent Citations (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
EP0288086A2 (fr) † 1987-04-24 1988-10-26 DANIELI & C. OFFICINE MECCANICHE S.p.A. Dispositif d'emboutissage de barres par retournement de l'ebauche et procédé pour cela
US4942796A (en) † 1988-08-03 1990-07-24 The National Machinery Company Stock feed apparatus for forging machines and the like

Also Published As

Publication number Publication date
EP0596577A1 (fr) 1994-05-11
DE69307461D1 (de) 1997-02-27
NL9201913A (nl) 1994-06-01
EP0596577B1 (fr) 1997-01-15
DE69307461T2 (de) 1997-08-14
DE69307461T3 (de) 2004-11-25

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