EP0504846B1 - Die-holder box with rotating die particularly for drawing metal wires - Google Patents

Die-holder box with rotating die particularly for drawing metal wires Download PDF

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Publication number
EP0504846B1
EP0504846B1 EP92104698A EP92104698A EP0504846B1 EP 0504846 B1 EP0504846 B1 EP 0504846B1 EP 92104698 A EP92104698 A EP 92104698A EP 92104698 A EP92104698 A EP 92104698A EP 0504846 B1 EP0504846 B1 EP 0504846B1
Authority
EP
European Patent Office
Prior art keywords
die
cooling
wall
cooling chamber
holder box
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
EP92104698A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0504846A1 (en
Inventor
Marco Frigerio
Luigi Arnoldi
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.)
Mario Frigerio SpA
Original Assignee
Mario Frigerio SpA
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 Mario Frigerio SpA filed Critical Mario Frigerio SpA
Publication of EP0504846A1 publication Critical patent/EP0504846A1/en
Application granted granted Critical
Publication of EP0504846B1 publication Critical patent/EP0504846B1/en
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
    • 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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/12—Die holders; Rotating dies
    • B21C3/14—Die holders combined with devices for guiding the drawing material or combined with devices for cooling heating, or lubricating

Definitions

  • the present invention relates to a die-holder box with rotating die particularly for drawing metal wires.
  • BE-A-524,858 is a machine for drawing metal wire having a die-holder which is mounted rotatably, and means for positively driving the die-holder.
  • the wire to be drawn is fed, preferably substantially tangentially, to the die holder.
  • the machine has conduits for feeding cooling water to a circular opening provided on the die holder, and a vessel containing powdered soap lubricant for lubrication of the wire being drawn.
  • a wire drawing machine wherein wire to be drawn is lubricated by being passed through a box containing powdered soap.
  • the box is rotatably mounted and rotation of the box is used to impart rotary motion to a rotatably mounted die casing.
  • a supporting bearing for the die casting is provided with a first annular chamber surrounding the casing and a series of ports which connect the first annular chamber to a second annular chamber in a stationary ring surrounding the bearing and provided with a wager inlet and an outlet.
  • the lubricant which is usually a viscous compound based on soapwort with the addition of various additives, furthermore causes various problems to the moving parts of rotating-die drawing machines. As the temperature rises, the lubricant in fact tends to solidify, and its penetration for example in the gears for transmitting motion from the reduction units to the die causes their seizure, with evident problems of production halting and of increase in the costs of said production.
  • the aim of the present invention is to eliminate the disadvantages described above in known types of die-holder box by providing a box with a rotating die particularly for drawing metal wires which eliminates the problems related to the cooling of the die, facilitates the operations for inserting and removing the die and allows continuous inspection.
  • an object of the present invention is to provide a die-holder box which eliminates the problems related to the penetration of lubricant in the moving mechanical parts.
  • Another object of the present invention is to provide a die-holder box which provides an easy and simple access for the inspection of the drawing region.
  • Not least object of the present invention is to provide a drawing machine which is relatively easy to manufacture and at competitive costs.
  • a die-holder box with rotating die particularly for drawing metal wires, according to the invention, comprises a metal wire lubrication chamber 2 which is fixed on a base 1, a drawing and cooling chamber 3 and a gearmotor 4.
  • a lubricating substance 16 is stored in the lubrication chamber 2 and is composed for example of additive soapwort.
  • the drawing and cooling chamber 3 is separated from the lubrication chamber 2 by means of a first wall which is divided into three layers: a first layer 5 which faces the chamber 2 and has a hole 6 in a median position; a second layer 7 which has a step-shaped cavity 8; and a third layer 9 which also has, in a median position, a step-shaped cavity 10.
  • the layers 5, 7 and 9 are assembled in a per se known manner, for example by means of bolts, and can thus be easily disassembled in order to perform any repair or maintenance intervention.
  • a second wall 11 of the chamber 3 also has a hole 12 in a median position.
  • the first wall, made of the wall layers 5,7 and 9, and the second wall 11 are interconnected by a third wall 13 and fourth wall 14, to thereby delimit the cooling chamber 3.
  • the first wall and the second wall 11 are substantially parallel, whereas the third wall 13 and the fourth wall 14 are not mutually parallel. Indeed, as more clearly illustrated in figures 1 and 4, the third wall 13 is inclined toward the outside of the chamber 3 so as to conveniently allow better access to said chamber 3.
  • Rotating supporting means for a double pressure die or for a single die immersed within a cooling liquid 15 are furthermore comprised within the cooling chamber 3.
  • Said rotating supporting means comprise means for connection to the gearmotor 4 and are sealingly inserted within the first wall and the second wall 11 of the drawing and cooling chamber 3.
  • the rotating supporting means comprise a first cup-shaped element 17 which has a cavity 18 which is connected, by means of the hole 6, to the lubrication chamber 2; the metal wire, indicated by a double dashed line in figure 2, penetrates in said cup-shaped element 17, which is provided with a wire exit hole 19.
  • the first cup-like element 17 is inserted, so as to define a seal ensured by gaskets 20 and 21 interposed between the outer surface of the first cup-like element 17 and the inner surface of the cavities 8 and 10, within the first wall, as previously described, of the drawing and cooling chamber 3.
  • Said first cup-shaped element 17 supports, on its own outer surface, the means for connection to the gearmotor 4, which are constituted by a gear 22, and bearings 23 for its own rotation with respect to the first wall.
  • the gear 22 and the bearings 23 are kept in position on the first cup-shaped element 17 by means of a fixing element 41, such as a snap ring or a split ring, which is inserted within the outer surface of said cup 17.
  • the gearmotor 4 comprises a motor 24 and a reducer 25 which has, as illustrated in figures 3 and 4, motion transmission gears 26 and 27; the gear 27 meshes with the gear 22 so as to rotate the first cup-shaped element 17.
  • Cross-members 28 protrude, preferably monolithically, from the first cup-like element 17 and connect said element 17 to a support 29 which is inserted, so as to define a seal ensured by gaskets 30, within the hole 12 of the second wall 11 and supports, on its own outer surface, bearings 31 for the rotation of the support 29.
  • the cross-members 28 define an accommodation seat for a single or double interchangeable die, which is formed by a first die 34, which can be inserted within a recess 35 of the first cup-shaped element 17, and by a second die 36, which sealingly rests on a plug 39 associated with the support 29; a wire guiding block 37 is inserted between the first die 34 and the second die 36.
  • the single or double pressure die can be inserted on the cup 17 in a radial direction with respect to the axis of said cup, simply by acting on the plug 39, which is then locked, creating the packing force for the fixing and sealing of the die.
  • the cooling fluid 15 makes direct contact with the die or dies 34 and 36 so as to remove therefrom the heat caused by the traction of a winding drum, not illustrated, on the metal wire being processed.
  • the support 29 bears, in an axial portion, the plug 39 which protrudes from the second wall 11; said plug 39 has a plurality of holes 40 for engagement with a screwing tool.
  • the drawing and cooling chamber 3 has, on a bottom 42, means for feeding a cooling liquid or fluid 15 into said chamber 3; said means, as illustrated in figure 4, can be either a simple liquid feed or a spray nozzle 43.
  • the drawing and cooling chamber 3 has an upper cover 44 which is provided with a removable handle 45 which constitutes an access for inspecting said chamber.
  • Said cover can be advantageously partially transparent so as to be able to inspect the chamber.
  • Inspection of the chamber 3 is particularly important, since it is thus possible to intervene in the drawing operations as soon as lubricant 16 leaks into the cooling liquid 15 occurs. If a lubricant leak occurs, maintenance actions are immediately taken in order to correct it.
  • the interchangeable single or double pressure die can advantageously be replaced by means of the removable upper cover 44 without having to perform interventions for the axial insertion and removal of the die as occurred up to now.
  • a liquid drain 46 is inserted within the drawing and cooling chamber 3 and protrudes from the bottom 42, passing through the base 1 in order to discharge excess fluid 15 from said chamber.
  • centering screws 50 and 51 which are fixed in the lower portions of the lateral walls which rest on the base 1 and affect lateral walls of a reference protrusion 52 which is fixed to the base 1 and the lateral faces whereof are inclined so as to approach the axis of said protrusion from the top downward.
  • the die-holder box according to the invention achieves the intended aim and objects, constituting an extremely advantageous alternative to known machines, since it in fact provides a rotating drawing machine with direct cooling and with a single or double pressure die, which so far has never been provided.
  • the die-holder box therefore combines, in itself, the advantages related to an optimum drawing, which are due to the rotation of the dies, with the advantages of durability and maintenance at optimum temperature related to the use of direct die cooling.
  • the materials employed, as well as the dimensions, may be any according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
EP92104698A 1991-03-21 1992-03-18 Die-holder box with rotating die particularly for drawing metal wires Expired - Lifetime EP0504846B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI910768 1991-03-21
ITMI910768A IT1245572B (it) 1991-03-21 1991-03-21 Scatola portafiliera con filiera rotante particolarmente per trafilare fili metallici

Publications (2)

Publication Number Publication Date
EP0504846A1 EP0504846A1 (en) 1992-09-23
EP0504846B1 true EP0504846B1 (en) 1995-08-02

Family

ID=11359176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92104698A Expired - Lifetime EP0504846B1 (en) 1991-03-21 1992-03-18 Die-holder box with rotating die particularly for drawing metal wires

Country Status (4)

Country Link
EP (1) EP0504846B1 (it)
DE (1) DE69203762T2 (it)
ES (1) ES2075507T3 (it)
IT (1) IT1245572B (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1273273B (it) * 1994-03-25 1997-07-07 M P Societa Per Azioni Meccani Porta-trafila con contenitore di polvere lubrificante, ad infilaggio rapido
EP0734798A1 (fr) * 1995-03-28 1996-10-02 R. LISCIANI TRAFILERIE E DIVISIONE DYN AUTOMAZIONE INDUSTRIALE S.n.c. Machine à terfiler pour fil métallique lubrifié à sec
ITMI20020737A1 (it) * 2002-04-08 2003-10-08 Tecnosider S R L Impianto meccanico rotativo motorizzato a velocita' variabile per la pulizia di vergella e fili metallici
CN101947565A (zh) * 2010-06-02 2011-01-19 天津市银龙预应力钢材集团有限公司 一种φ5.08、φ5.33高碳钢丝专用旋转拉丝机
CN201744515U (zh) * 2010-07-16 2011-02-16 费兰英 用于拉拔线材的模座装置
RU2467816C2 (ru) * 2011-02-28 2012-11-27 Михаил Витальевич Чукин Способ получения ультрамелкозернистых полуфабрикатов волочением с кручением
CN102319755A (zh) * 2011-06-29 2012-01-18 无锡市常欣机电科技有限公司 拉丝机除结焦模盒
CN102240687A (zh) * 2011-06-29 2011-11-16 无锡市常欣机电科技有限公司 节能型拉丝机旋转搅拌模盒
CN102319753A (zh) * 2011-06-29 2012-01-18 无锡市常欣机电科技有限公司 拉丝机旋转搅拌模盒
CN102319754A (zh) * 2011-06-29 2012-01-18 无锡市常欣机电科技有限公司 拉丝机搅拌模盒
CN102430604A (zh) * 2011-11-02 2012-05-02 贵州建新南海科技股份有限公司 一种拉丝模具冷却机构
CN102430605B (zh) * 2011-12-08 2014-03-12 常州耐尔特精密工具有限公司 拉丝粉盒搅拌装置
RU2489219C1 (ru) * 2012-06-01 2013-08-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный политехнический университет" (ФГБОУ ВПО "СПбГПУ") Способ получения заготовок с мелкозернистой структурой при прокатке
CN102773295A (zh) * 2012-07-25 2012-11-14 无锡平盛科技有限公司 直进式拉丝机模盒总装部件
CN103464495B (zh) * 2013-09-15 2015-07-29 无锡平盛科技有限公司 拉丝机模盒装置
RU170774U1 (ru) * 2016-07-14 2017-05-10 Федеральное государственное бюджетное образовательное учреждение высшего образования "Магнитогорский государственный технический университет им. Г.И. Носова" (ФГБОУ ВО "МГТУ им. Г.И. Носова") Устройство для изготовления проволоки с ультрамелкозернистой структурой
CN110773587A (zh) * 2019-12-02 2020-02-11 无锡熠卿锋金属科技有限公司 一种高稳定琴钢丝干拉生产用模盒

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE524858A (it) *
FR483895A (fr) * 1916-10-27 1917-08-17 Louis Herman Brinkman Appareil pour l'étirage des métaux
GB563828A (en) * 1943-05-10 1944-08-31 Charles Arnold Barron Improvements in or relating to wire-drawing machines
FR1081760A (fr) * 1953-07-30 1954-12-22 Dispositif d'étirage de fil

Also Published As

Publication number Publication date
EP0504846A1 (en) 1992-09-23
IT1245572B (it) 1994-09-29
ES2075507T3 (es) 1995-10-01
ITMI910768A1 (it) 1992-09-21
ITMI910768A0 (it) 1991-03-21
DE69203762D1 (de) 1995-09-07
DE69203762T2 (de) 1996-04-04

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