EP0306608A2 - Machine de tréfilage - Google Patents

Machine de tréfilage Download PDF

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Publication number
EP0306608A2
EP0306608A2 EP88106243A EP88106243A EP0306608A2 EP 0306608 A2 EP0306608 A2 EP 0306608A2 EP 88106243 A EP88106243 A EP 88106243A EP 88106243 A EP88106243 A EP 88106243A EP 0306608 A2 EP0306608 A2 EP 0306608A2
Authority
EP
European Patent Office
Prior art keywords
lever
curve
slide
tongue
clamping jaws
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
EP88106243A
Other languages
German (de)
English (en)
Other versions
EP0306608B1 (fr
EP0306608A3 (en
Inventor
Elefterios Dipl.-Ing. Paraskevas
Original Assignee
Konig Werner E Dipl-Ing
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 Konig Werner E Dipl-Ing filed Critical Konig Werner E Dipl-Ing
Publication of EP0306608A2 publication Critical patent/EP0306608A2/fr
Publication of EP0306608A3 publication Critical patent/EP0306608A3/de
Application granted granted Critical
Publication of EP0306608B1 publication Critical patent/EP0306608B1/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
    • 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
    • B21C1/27—Carriages; Drives
    • B21C1/28—Carriages; Connections of grippers thereto; Grippers

Definitions

  • the invention relates to a drawing machine according to the preamble of claim 1. It relates in particular to the control of the jaws in the carriage.
  • the invention is primarily used in continuously operating drawing machines which work with 2 drawing slides which pull wire through a drawing nozzle without interruption and in alternation.
  • the invention relates in particular to the control of wedge-shaped clamping jaws on drawing machines, which are usually mounted on a roller in a wedge-shaped cutout in the drawing slide, which, once clamped with the workpiece under tension, no longer require any clamping force supplied from the outside and which are self-releasing when the Open traction.
  • other clamping devices can also be controlled with the solution according to the invention.
  • Both tensioning carriages have a short distance with overlapping pulling task to ensure a continuous pulling of the wire. This distance of overlap is made as short as possible because it shortens the effective drawing length of each drawing slide. The shorter the overlap distance, the more precise the tension and the loosening of the wire must be.
  • the cam is designed and aligned so that in the dead center position of the slide, immediately before the start of drawing, the lever almost moves up to the cam and that when the slide starts to work, the control cam moves the lever back again due to its shape, still in the overlap phase, catches up and actuated so that the clamping jaws are pressed against the workpiece.
  • a curve can be understood to mean any type of obstacle or control element that actuates the lever on the slide.
  • the invention is therefore based on the object of finding a control of the clamping jaws on the drawing slide, which works precisely with a minimum of effort and is independent of the drawing speed.
  • the control and function of the clamping jaws should be easily manageable.
  • the main advantage of this solution is its structural simplicity and the fact that the pulling sled does not need any supply lines connect the moving slides to the machine body.
  • this evasive movement takes place against the force of a spring, which allows this evasive movement and initiates the snapping back of the lever and curve into the same plane as soon as the guardrail clears the way.
  • Evasion can take place on the control cam side as well as on the guide surface side. Provision is preferably made for the curve and the guide surface to be formed on a tongue bearing both and to be arranged on the machine frame.
  • the lever Shortly before the dead center position of the slide is reached, the lever has passed the guide surface and the lever and the curve jump into the same plane using the spring action.
  • the term spring is to be understood in such a way that it can mean any energy store or energy source.
  • the overload spring in the kinematic chain between the machine body and the clamping jaws is preferably designed as a torsion bar, which is arranged in a bridge across the drawing slide.
  • a further embodiment of the invention is shown in claim 7. Basically, this unlocking would be unnecessary for the wedge-shaped jaws described at the beginning, since these automatically open when the pulling force ceases to exist. This automatism can, however, be disturbed by wear or contamination of the wedge-shaped drawing jaws.
  • the unlocking device is used in this case for emergency "release" of the jaws. With different types of clamping devices, unlocking may also be necessary for normal operation of the clamping jaws.
  • Fig. 1 shows a Conti - drawing machine 1 with a machine body 2, a drawing nozzle 3 and two clamping carriages 5, 25, which are movable in slide tracks 4, 40 in the machine body 2 in the drawing direction 15 and moved back and forth by an actuator 9 in an alternating sequence will.
  • the drive takes place via a rotating shaft 23 mounted in the machine body parallel to the drawing direction.
  • On this shaft sleeves are fastened in a known manner, which bear curves 24, 25 approximately elliptically around their circumference, on which the slides 5, 35 are guided with rollers (not shown).
  • the movements of the drawing slides 5, 35 are usually in opposite directions during operation of the drawing machine. When the carriage 5 pulls, the carriage 35 runs back and vice versa. In order to ensure a continuous extraction of the wire-shaped workpiece 8, both drawing slides have to work together in the drawing direction 15 for as short a time as possible of a few milliseconds. During this time, the train is handed over by one tension wagon and taken over by the other tension wagon.
  • FIG. 1 Such a situation is shown in Fig. 1.
  • the tensioning carriage 35 is at the end of its working distance and the tensioning carriage 5 is at the beginning of its working distance. So that the clamping carriage 5 can take over the pull-out force, its clamping jaws 6, 7 must be closed.
  • the clamping jaws 6, 7 are closed with the aid of the curve 11 on the tongue 16 and the clamping lever 10 with the roller 22 guided above it.
  • the clamping of the workpiece 8 is basically released automatically when the clamping carriage 5 takes over the pull-out force and the wire length between the two clamping carriages becomes stress-free.
  • an unlocking device 21 is provided with which the clamping jaws 26, 27 of the clamping carriage 35 are forcibly released if the automatic release of the Jaws should not have worked.
  • a bridge extends across each tensioning carriage and is fastened to it in bearing blocks 28, 30. This bridge extends with the control levers 10 and 20 for the clamping jaws 6, 7 and 26, 27 to in the area of the machine body or the slide tracks 4, 40.
  • the tensioning carriage 25 has the same structure.
  • a rotatable clamping tube 39 is guided through the bearing blocks 28, 30, from which a clamping lever 38 projects downwards in the region of the clamping jaws 6, 7 and engages in recesses 41 in the clamping jaws 6, 7.
  • Rotation of the clamping tube 39 causes the clamping jaws to move in or against the direction of drawing. Due to the wedge-shaped design of the clamping jaws, the clamping jaws are also moved radially towards the wire 8.
  • the clamping of the wire 8 achieved in this way is self-locking as soon as the drawing slide exerts tension on the wire. The pressing force exerted by the tensioning levers 38 is unnecessary during the train.
  • the pivoting of the tensioning tube 38 and the tensioning lever 28 arranged thereon in a rotationally fixed manner takes place with the aid of the control lever 10 and the roller 22 mounted on its free end.
  • the working or pivoting plane of the lever 10 is designated by 17.
  • the lever 10 with the roller 22 is controlled by a curve 11.
  • the curve 11 is formed on the tongue 16.
  • the clamping jaws 6, 7 are closed.
  • the tongue 16 on which the curve 11 is formed is attached to the machine body 2 with a joint 37. It is located directly next to the drawing slide 5 within the reach of the roller 22. It extends only over the last part of the drawing section of the drawing slide 5.
  • the lever 10 When the curve 11 travels through the roller 22, the lever 10, the tensioning tube 39 and the tensioning lever 38 are pivoted .
  • the clamping jaws 6, 7 which are thereby displaced counter to the drawing direction 15 thereby clamp the wire 8.
  • the pulling slide 5 pulls the wire 8 through the drawing nozzle 3 by about 1 meter and transfers it to the pulling slide 35. After the clamping jaws 6, 7 have detached from the wire 8, the tensioning carriage 5 moves back.
  • the roller 22 On the way back, the roller 22 does not travel over the curve 11, but pushes the tongue 16 aside against the force of the spring 14 fastened to the machine body 2 and thereby slides along the guide surface 12 on the side of the tongue 16 like on a guardrail.
  • the tongue 16 is pivoted in the joint 37 (Fig. 3). As soon as the roller 22 has passed the mountain formed by the curve 11, the tongue 16 snaps back from the side under the action of the spring 14 and the bottom of the valley before the mountain of the curve 11 comes to rest under the roller 22 on the lever 10. The curve 16 is thus again in the working plane 17 of the lever 10 which is slightly offset by the roller. The pivoting of the tongue 16 is limited by the stop 18 on the machine body 2.
  • An essential advantage of the invention is that this snap-back of the tongue 16 with the curve 11 is so precise and punctual that the accuracy of this point in time cannot be surpassed by any electronic, hydraulic or pneumatic control.
  • the control of the jaws can begin immediately after the tongue snaps back, practically simultaneously with the start of the working stroke. Basically, there is no dead end at the beginning of the work stroke.
  • a spring is provided in the kinematic chain up to the clamping jaws 6, 7.
  • the spring is designed as a torsion bar 19.
  • the lever 10 itself is rotatably connected to the torsion bar 19 at one end.
  • the torsion bar extends over the entire width of the drawing slide 5 within the tension tube 39.
  • the torsion bar is connected in a rotationally fixed manner to the tension tube 39 by the locking pin 13.
  • the unlocking device 21 shown in FIG. 6 is provided.
  • the lever 20 moves past a curve piece 42 fastened to the machine body 2, which extends over the roller 32 which projects from the lever 20.
  • the tension of the jaws 26, 27 is already released automatically at this point in the pull-out movement.
  • the roller 32 is then already at a lowered level shown with 32 a, so that it no longer touches the curve piece 42. With worn wedge surfaces of the jaws 26, 27 and with thin workpiece diameters, it can happen that the jaws 26, 27 have not yet been loosened.
EP88106243A 1987-09-07 1988-04-20 Machine de tréfilage Expired - Lifetime EP0306608B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3729892 1987-09-07
DE19873729892 DE3729892A1 (de) 1987-09-07 1987-09-07 Ziehmaschine

Publications (3)

Publication Number Publication Date
EP0306608A2 true EP0306608A2 (fr) 1989-03-15
EP0306608A3 EP0306608A3 (en) 1990-08-22
EP0306608B1 EP0306608B1 (fr) 1994-03-30

Family

ID=6335395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106243A Expired - Lifetime EP0306608B1 (fr) 1987-09-07 1988-04-20 Machine de tréfilage

Country Status (4)

Country Link
US (1) US4879892A (fr)
EP (1) EP0306608B1 (fr)
JP (1) JPS6471516A (fr)
DE (2) DE3729892A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1938912A1 (fr) * 2006-12-29 2008-07-02 Elite Machine and Design Ltd. Dispositif d'étirage
CN113714316A (zh) * 2021-07-23 2021-11-30 江苏华程工业制管股份有限公司 一种轴承钢管加工用冷拔装置

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU631118B2 (en) * 1988-11-22 1992-11-19 Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti Method and device for making profiled pipes used for well construction
DE4108848A1 (de) * 1991-03-18 1992-09-24 Elefterios Dipl Ing Paraskevas Ziehanlage
DE19544383C1 (de) * 1995-11-15 1997-04-10 Mannesmann Ag Verfahren und Vorrichtung zum Geradeausziehen und Einfädeln langen Ziehgutes in mehreren Schritten
DE10122657B4 (de) * 2001-05-10 2006-07-13 Sms Meer Gmbh Zugeinheit für eine Ziehmaschine sowie Verfahren zum Ziehen eines Ziehgutes mit dieser Zugeinheit und diskontinuierlich arbeitende Ziehmaschine
US7073363B2 (en) * 2003-05-20 2006-07-11 Schumag Ag Method for processing drawn material and drawn material production installation
US7661285B2 (en) * 2006-12-29 2010-02-16 Elite Machine And Design Ltd. Drawing machine
US20080156060A1 (en) * 2006-12-29 2008-07-03 Po-Lin Ho Drawing machine
CN104525601B (zh) * 2014-12-16 2016-05-25 西安交通大学 一种立式机械振动液压挤压机
DE102016113686A1 (de) * 2016-07-25 2018-01-25 Ejp Maschinen Gmbh Ziehschlitten für eine Ziehmaschine
CN110681914A (zh) * 2019-10-18 2020-01-14 宝丰钢业集团有限公司 一种不锈钢钢管用卧式高效拉床

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840381A (en) * 1953-07-02 1958-06-24 Ajax Mfg Co Wire gripping mechanism
DE2806380A1 (de) * 1978-02-13 1979-08-23 Mannesmann Ag Schlittenziehmaschine mit zwei in gleitbahnen am maschinenrahmen parallel zur ziehrichtung gefuehrten ziehschlitten

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138243A (en) * 1962-04-02 1964-06-23 Oakley Ind Inc Drawing apparatus
DE1930700B2 (fr) * 1969-06-18 1971-01-28

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840381A (en) * 1953-07-02 1958-06-24 Ajax Mfg Co Wire gripping mechanism
DE2806380A1 (de) * 1978-02-13 1979-08-23 Mannesmann Ag Schlittenziehmaschine mit zwei in gleitbahnen am maschinenrahmen parallel zur ziehrichtung gefuehrten ziehschlitten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MACHINERY. vol. 61, no. 9, September 1954, NEW YORK US Seiten 203 - 204; KASPER: "Ingenious Mechanisms - Reciprocating cam with half-cycle dwell" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1938912A1 (fr) * 2006-12-29 2008-07-02 Elite Machine and Design Ltd. Dispositif d'étirage
CN113714316A (zh) * 2021-07-23 2021-11-30 江苏华程工业制管股份有限公司 一种轴承钢管加工用冷拔装置
CN113714316B (zh) * 2021-07-23 2022-09-13 江苏华程工业制管股份有限公司 一种轴承钢管加工用冷拔装置

Also Published As

Publication number Publication date
EP0306608B1 (fr) 1994-03-30
US4879892A (en) 1989-11-14
DE3729892A1 (de) 1989-03-23
EP0306608A3 (en) 1990-08-22
DE3888762D1 (de) 1994-05-05
JPS6471516A (en) 1989-03-16

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