EP1327488A2 - Filière d'étirage pour des barres en fer ou en acier - Google Patents

Filière d'étirage pour des barres en fer ou en acier Download PDF

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Publication number
EP1327488A2
EP1327488A2 EP02026780A EP02026780A EP1327488A2 EP 1327488 A2 EP1327488 A2 EP 1327488A2 EP 02026780 A EP02026780 A EP 02026780A EP 02026780 A EP02026780 A EP 02026780A EP 1327488 A2 EP1327488 A2 EP 1327488A2
Authority
EP
European Patent Office
Prior art keywords
die
core
engaged
iron
steel rods
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.)
Withdrawn
Application number
EP02026780A
Other languages
German (de)
English (en)
Other versions
EP1327488A3 (fr
Inventor
Ferruccio Bellina
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.)
Tecnovo Srl
Original Assignee
Tecnovo Srl
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 Tecnovo Srl filed Critical Tecnovo Srl
Publication of EP1327488A2 publication Critical patent/EP1327488A2/fr
Publication of EP1327488A3 publication Critical patent/EP1327488A3/fr
Withdrawn legal-status Critical Current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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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 for metal drawing
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/12—Die holders; Rotating dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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 for metal drawing
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/04—Dies; Selection of material therefor; Cleaning thereof with non-adjustable section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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 for metal drawing
    • 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 drawing die for drawing iron and steel rods, having a comparatively large diameter.
  • the iron or steel rod is subjected to a plastic deformation operation, to reduce its diameter to a set size.
  • Prior Italian patents IT 1,295,286 and IT 1,295,287 in the name of the same Applicant disclose an improved drawing die, including a drawing core, which can be easily replaced as it is worn by a different size core: said drawing core, in particular, can also be replaced with another similar drawing core for mating it with changing working conditions.
  • the aim of the present invention is to overcome the above mentioned problems, by providing a drawing die for drawing iron and steel rods having a comparatively large diameter, allowing to properly compensate for the stresses or efforts applied to the drawing core, so as to optimally distribute said efforts, without damaging the die.
  • a main object of the present invention is to provide such a drawing die, allowing to easily and quickly replace the drawing core, without generating undesired seizure conditions.
  • Another object of the present invention is to provide such a drawing die which, owing to its specifically designed features and constructions, is very reliable and safe in operation.
  • Yet another object of the present invention is to provide a drawing die for drawing iron and steel rods, having a comparatively large diameter, which can be easily made from easily commercially available elements and materials and which, moreover, is very competitive from a mere economic standpoint.
  • a drawing die for drawing iron and steel rods of a comparatively large diameter
  • said drawing die comprising a framework body defining a throughgoing opening housing herein an upper inlet element and a drawing core, said upper inlet element and drawing core being axially aligned with respect to one another, characterized in that said drawing die comprises moreover a lower outlet element which can be removably coupled to said framework body and axially engaged with said drawing core.
  • the drawing die for drawing iron and steel rods of a comparatively large diameter which has been generally indicated by the reference number 1, comprises a framework body 2, which defines in its inside a throughgoing opening which, at the top or upper portion thereof, is provided with a female thread 3, in which can be engaged a male thread 4 of an upper inlet element 5, which is provided with an outer polygonal portion 6 to be engaged by a wrench.
  • a drawing die In said upper inlet element, a drawing die, generally indicated by the reference number 10, and including a drawing die flange 11, can be housed.
  • Said drawing die in particular, is axially engaged with the lower end portion of the upper or top inlet element, thereby providing a lead-in feature for the introduction of the rod.
  • a drawing core 20 having a frustum-of-cone shaped inner bore 22, and comprising, on the outside thereof, with a frustum-of-cone shaped tapering portion 23, engaging with a corresponding tapering recess 24, formed on said throughgoing opening defined by the framework or supporting body 2.
  • a lower or bottom outlet element which comprises an outlet hole 31 axially aligned with said bore or hole 22 of the drawing core, and including moreover a threaded enlarged portion having a male thread 32 engaging with a recess 33 including a female thread, thereby allowing a removable engagement with the framework body 2 to be easily made.
  • the bottom or lower outlet element is axially engaged with the drawing core, thereby cooperating with the latter to resist against axially directed efforts applied by the rods being drawn.
  • the polygonal end piece 35 could be easily engaged by a suitably designed disassembling tool.
  • the used materials, as well as the contingent size and shapes can be any, depending on requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
EP02026780A 2002-01-10 2002-12-02 Filière d'étirage pour des barres en fer ou en acier Withdrawn EP1327488A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20020035 2002-01-10
IT2002MI000035A ITMI20020035A1 (it) 2002-01-10 2002-01-10 Filiera per la trafilatura di vergelle di ferro e di acciaio

Publications (2)

Publication Number Publication Date
EP1327488A2 true EP1327488A2 (fr) 2003-07-16
EP1327488A3 EP1327488A3 (fr) 2003-11-19

Family

ID=11448833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02026780A Withdrawn EP1327488A3 (fr) 2002-01-10 2002-12-02 Filière d'étirage pour des barres en fer ou en acier

Country Status (2)

Country Link
EP (1) EP1327488A3 (fr)
IT (1) ITMI20020035A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2796218A1 (fr) * 2013-04-24 2014-10-29 Ceratizit Italia S.p.A. Outil de filière d'étirage et procédé de fabrication d'un tel outil
CN104456049A (zh) * 2014-11-17 2015-03-25 攀钢集团成都钢钒有限公司 钢管及其加工工艺和钢管的加工模具
CN107597864A (zh) * 2017-08-25 2018-01-19 无锡金宸合环机械装备有限公司 一种锥形拉丝模

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB382821A (en) * 1931-01-31 1932-11-03 British Thomson Houston Co Ltd Improvements in or relating to apparatus for drawing wire, rods, tubes, ornamental beading, and the like
DE2934222A1 (de) * 1979-08-24 1981-03-12 Verein deutscher Eisenhüttenleute VDEh, 4000 Düsseldorf Vorrichtung zum hydrostatischen ziehen.
GB2077647B (en) * 1980-06-18 1983-06-29 Uralsky Inst Chernykh Metall Drawing tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2796218A1 (fr) * 2013-04-24 2014-10-29 Ceratizit Italia S.p.A. Outil de filière d'étirage et procédé de fabrication d'un tel outil
CN104456049A (zh) * 2014-11-17 2015-03-25 攀钢集团成都钢钒有限公司 钢管及其加工工艺和钢管的加工模具
CN107597864A (zh) * 2017-08-25 2018-01-19 无锡金宸合环机械装备有限公司 一种锥形拉丝模

Also Published As

Publication number Publication date
EP1327488A3 (fr) 2003-11-19
ITMI20020035A1 (it) 2003-07-10
ITMI20020035A0 (it) 2002-01-10

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