EP1149642A1 - Verfahren zum Wringen eines metallischen Teiles, Wringvorrichtung und Folgewerkzeug mit solcher Vorrichtung - Google Patents

Verfahren zum Wringen eines metallischen Teiles, Wringvorrichtung und Folgewerkzeug mit solcher Vorrichtung Download PDF

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Publication number
EP1149642A1
EP1149642A1 EP01420092A EP01420092A EP1149642A1 EP 1149642 A1 EP1149642 A1 EP 1149642A1 EP 01420092 A EP01420092 A EP 01420092A EP 01420092 A EP01420092 A EP 01420092A EP 1149642 A1 EP1149642 A1 EP 1149642A1
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EP
European Patent Office
Prior art keywords
twisting device
metal part
stripper
jaws
rack
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
EP01420092A
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English (en)
French (fr)
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EP1149642B1 (de
Inventor
Dominique Pouilley-le-Francais Vendola
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EMT 25
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EMT 25
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Filing date
Publication date
Application filed by EMT 25 filed Critical EMT 25
Publication of EP1149642A1 publication Critical patent/EP1149642A1/de
Application granted granted Critical
Publication of EP1149642B1 publication Critical patent/EP1149642B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/14Twisting

Definitions

  • the present invention relates to a method for twisting a part metallic.
  • the invention also relates to a device for twisting a metal part.
  • the invention finally relates to a tool to be tracked equipped with a device for twisting.
  • a press forming machine comprising a "tool to follow" for which it is a metal strip which supports itself the stampings made in this strip.
  • the metal strip is supplied along the axis of the machine, and says this is a longitudinal feed.
  • This machine uses a press traditional, on which the devices of the tool to be tracked are mounted.
  • the precise succession of the various devices of the tool to be followed makes it possible to carry out a succession of operations, such as stamping, longitudinal, lateral folding, transverse, drilling, tapping, of semi-finished parts until a finished piece.
  • This machine performs several operations simultaneously at each press release, the device of the preceding tool feeding the device of the following tool to follow.
  • Twisting a metal part consists to twist it at a predetermined angle, that is to say to deform it under the action of two opposite couples acting in particular in planes parallel or also in divergent planes.
  • the twisting will be done by a rotation in opposite direction by two precise ends, or by rotation in one direction through one end, the other end being kept fixed.
  • twisting metal parts are carried out in recovery on a separate machine, with an operator or a robot feeding the machine parts to twist. It is clear that the costs are higher and that twisting rates are much lower than the known rates for tools to be continued.
  • the present invention aims to fill this gap in the prior art.
  • a twisting device in a method to twist a metal part on a press, is provided being part of a tool to follow, intended to print a predefined twist to the metal part.
  • the method comprises the steps consisting in: advancing the metal part at the twisting device; to block a anterior area and a posterior area of the metal part; to rotate at a predetermined angle the posterior zone of the metal part, while now blocked the anterior area, in order to print the twist according to the angle predetermined in an area between said anterior area and said area posterior; to relax the anterior and posterior zones of the part twisted metallic; to evacuate the twisted metal part from the device twisting and advancing the subsequent piece to be twisted.
  • a tool to follow which is intended to shape a metal part, has a static bottom sole, a movable top sole and a mobile stripper, both reciprocating up and down descent.
  • the tool to be followed is characterized in that it includes a twisting device for printing to the metal part a twist at a predetermined angle.
  • a twisting device intended to print a predefined twist to a metal part, is part of a tool to follow, which has a static bottom sole, an upper sole mobile and a mobile stripper, both with reciprocating uphill movement and downhill.
  • the twisting device is characterized in that it comprises a fixed front part of blocking and loosening of an anterior area of the metal part ; a rotating rear blocking and loosening part a posterior zone of the metal part; and means for rotating at a predetermined angle of the rear blocking and releasing part.
  • the difficulty of inserting a twisting device into a tool follow was resolved by the combination of a blocking movement and a rotational movement for twisting, at the translational movement of the strip and semi-finished parts, which scroll from one device to another.
  • the front part fixed may include an integral part of the stripper, and where appropriate, a integral part of the bottom sole.
  • the rotary rear part can comprise two jaws which can move towards and away from each other and which can turn together when closed to ensure twisting.
  • the two jaws are brought together and closed by the descent and the support of the stripper on the upper jaw.
  • the stripper went down so classic by the support of the upper sole which goes down. Conversely, in order to release the twisted metal part, the two jaws are separated from each other the other by return means, when the stripper is no longer pressing on the upper jaw, that is to say when the upper sole is raised.
  • the means for rotating comprise a rack rack meshing with a lateral toothing present on an element of pivoting, integral with the two jaws, and forming an axis of rotation for both jaws.
  • the rack which slides in a slide and which performs a alternating up and down movement, is lowered by a pusher present on the upper sole. The descent of the rack rotates the rotating rear part.
  • the rack is raised by a lifting lever present on the upper sole, catching a projection formed on it.
  • the two jaws open automatically thanks to the return means, which allows the release of the twisted part. Only after, the upper sole goes up completely, the ascent lever then rotating the part in the opposite direction rear blocking for resetting to zero.
  • the desired angle of twist for the metal part will be substantially equal to the angle of rotation of the two jaws of the posterior part blocking. To be able to adjust this angle of rotation of the two jaws, you can plan to vary the travel of the sliding rack, by adjusting the length of the pusher pressing on the top of the rack, using a nut, or any other adjustment device.
  • a tool to follow 1 (see Figure 2) includes a sole or plate static lower 2, fixed on a frame (not shown), and a sole or plate movable upper 3, moving back and forth from top to bottom.
  • This upper sole 3 is integral and is actuated by the slide of the press (not shown).
  • Under the movable upper sole 3 is fixed a punch holder 4, intended to carry out different shaping operations.
  • On the sole static lower 2 is fixed a matrix 6, the shapes of which correspond to the succession of the various aforementioned shaping operations.
  • the tool to follow is fed longitudinally continuously at one of its ends by a strip metal 7, the thickness of which corresponds to the thickness of the desired finished part.
  • a midsole or plate, also called stripper 8, is interposed between the lower sole 2 and the upper sole 3.
  • stripper moves back and forth from top to bottom bottom each time pushed by the upper sole 3, rising and falling.
  • gas springs or any other elastic device
  • Stripper 8 also helps maintain two continuous longitudinal ribbons 11a, 11b, left on each side in order to carry successive semi-finished parts 7a, 7b, 7c, 7d, 7e.
  • a finished metal part is for example in the form of a regular metal profile, elongated, U-section at right angles 12 (see Figure 1).
  • the metal profile 12 then comprises an anterior zone 12a and a posterior zone 12b.
  • This metal section 12 has been twisted at the angle ⁇ .
  • the twist was printed in an intermediate zone 12c of the profile 12, interposed between the anterior zone 12a and the posterior zone 12b.
  • Figures 2 to 8A have the twist of a semi-finished metal part in the form of a profile elongated U-shaped section, the bottom is substantially rounded.
  • a twisting device 13, intended to print a predefined twist to a metal part was inserted at the end of shaping, at the end 14 of the tool to follow, opposite the insertion end of the metal strip 7.
  • the twisting device 13 comprises a fixed front part 16, intended to block the anterior zone 12a of the semi-finished metal part 12.
  • the anterior part 16 itself comprises a first upper sub-part 17, attached under stripper 8, and a second lower sub-portion 18, attached to 1a bottom sole 2 of the tool to be followed.
  • Upper sub-part 17 and sub-part lower 18 have a substantially parallelepiped shape.
  • a groove 19 oriented downwards and extending transversely with respect to the tool to be followed.
  • This groove 19 constitutes a female socket for the flat top of the U and for the two lateral sides of the section 12. The section 12 is thus inserted at the bottom of the groove 19.
  • the outgrowth 21 constitutes a male plug for the bottom of the U and for the two lateral sides of the profile 12.
  • the protrusion 21 is thus plugged into the bottom of the U.
  • the spacing between the bottom surface of the upper sub-part 17 and the surface from the top of the projection 21, when the stripper 8 is in the high position, will be sufficient to allow the passage of a metal piece 12.
  • the groove 19 approaches the protrusion 21, the latter thus clipping and completely blocking the anterior zone 12a of the profile 12.
  • the zone front 12a of the profile 12 will be released.
  • the twisting device 13 comprises a rear part 22 mobile, simultaneously presenting a rotation function and a blocking.
  • the posterior part 22 comprises an upper jaw 23 and a lower jaw 24, both positioned transversely to the tool 1.
  • the upper jaw 23 is in the form of a half-cylinder, with a flat base facing down, dividing into two parts, front and back.
  • a groove 26 oriented downwards and extending transversely with respect to the tool to to follow.
  • This groove 26 constitutes a female socket for the flat top and for the lateral sides of the U-shaped profile 12.
  • the profile 12 is thus inserted at the bottom of the groove 26.
  • This groove has substantially the same dimensions as the groove 19 of the upper sub-part 17 of the front blocking part 16.
  • the lower jaw 24 is in the form of a half-cylinder with a base flat facing up, and dividing into two parts, front and rear. AT from the flat base of the front of the lower jaw 23, a protuberance, similar to a rib 27, extends upward, while extending transversely to the tool to follow.
  • the outgrowth 27 constitutes a male plug for the bottom and for the two lateral sides of the U-shaped profile 12. The protuberance 27 is thus plugged into the bottom of the U.
  • an upper retaining block 28 is fixed, having a concave notch in an arc of a circle, open downwards and intended to wedge the round part of the front of the upper jaw 23.
  • Three bearings of bearings 29a, 29b, 29c, inserted in three holes in the holding block 28, ensure regular rotation of the upper jaw 23.
  • a lower holding block 31 On the sole lower 2 of the tool to be followed, is fixed a lower holding block 31, having a concave notch in an arc open upwards, and intended to wedge the round part of the front of the lower jaw 24.
  • Three bearing bearings 32a, 32b, 32c, inserted into three holes in the lower holding block 31, provide support and regular rotation of the lower jaw 24.
  • the spacing between the flat base of the upper jaw 23 and the surface of the top of the protrusion 27 of the lower jaw 24, will be sufficient to allow the passage of a metal part, when the stripper 8 with its upper retaining block 28 are in the high position.
  • the groove 26 of the upper jaw 23 approaches the protuberance 27 of the lower jaw 24, these two last thus clipping and completely blocking the posterior zone 12b of the profile 12.
  • the posterior zone 12b of the profile 12 will be released.
  • the base of the front of the upper jaw 23 further has a clearance 33, located to the right of the throat 26.
  • the base of the front of the jaw upper 24 also has a clearance 34 located to the left of the projection 27.
  • each of the two jaws 23, 24 include the return means for the spacing of the two jaws, as well as the means for rotating said two jaws.
  • a pivoting element 36 is inserted, extending to the rear of the twisting device.
  • a front plate 37 forming part of the element 36 has a substantially parallelepipedal flat shape.
  • the element 36 is shaped like a cylinder 38.
  • the cylindrical rear 38 serves as a pivot axis by being inserted in a stud rotation 39. It rotates on bearings (not shown).
  • the eight retaining screws 41a, 41b, 41c, 41d allow, to secure the pivoting element 36 with the two jaws 23 and 24.
  • the two columns allow to guide by sliding on themselves, the movement of bringing together and moving the two jaws 23, 24 together and by compared to the front plate 37 of the element 36.
  • the four coil springs 42 constitute the return means ensuring the spacing of the two jaws 23, 24.
  • the jaw-pivot element assembly thus being cantilevered by compared to the pivot pad 39, we can better understand the value of the bearings 29a, 29b, 29c, 32a, 32b, 32c in the front holding blocks 28, 31.
  • the stud rotation 39 is mounted on four guide and sliding columns 47.
  • Four coil springs 48 allow the assembly to be recalled upwards jaw-pivot element-rotation stud.
  • a notch On a side edge of the front plate 37 of the pivoting element 36, we practice a notch, and we have a toothing 49 cut in a sector in an arc of a circle 51.
  • the sector in an arc of a circle 51 is positioned perpendicular to the plane of the front plate 37, so that the toothing 49 is facing outwards and towards the right longitudinal edge of the twisting device 13.
  • This toothing 49 meshes with a complementary toothing 52 of a rack straight 53.
  • the rack 53 slides from bottom to top in a slide 54 formed in a lateral block 56 fixed on the lower sole 2.
  • the rack 53 is lowered using a pusher 57 attached to the upper sole 3.
  • the pusher 57 is formed from a bar, and it projects down towards stripper 8.
  • Pusher 57 passes through stripper 8 through an opening 58 to reach the upper face of the rack 53.
  • the operator can use a adjusting nut 59, which allows the length of the pusher 57 to be varied by raising and lowering from the upper sole 3.
  • the rack 53 is pulled up by a lifting lever 61 also attached to the upper sole 3, next to the pusher 57, but towards outside, to the right of the twisting device.
  • the rack 53 is presented under the form of a rod projecting downwards towards stripper 8.
  • the ascent lever 61 completely crosses stripper 8 by the same opening 58 than that through which the pusher 57 passes, until it reaches the outer side of the rack 53.
  • the ascent lever 61 has at its lower end a protrusion forming a hook 62, oriented inwards, to the left of the twisting device. This protuberance 62 comes into contact with a projection 63 present on the rack 53, and oriented in the direction of the projection 62 that is to say towards the outside, to the right of the twisting device.
  • the method for twisting a metal part 12 is implemented in the twisting device 13 which operates in the following manner.
  • a band metal 7, introduced into the tool to be followed 1 undergoes the various operations successive steps to arrive at semi-finished parts 7a, 7b, 7c, 7d, 7e, at each of descents of the upper sole 3.
  • the strip 7, as well as the semi-finished parts 7a, 7b, 7c, 7d, 7e, have a direction of introduction and scrolling, according to the arrow T, longitudinal to the tool to be followed 1.
  • the upper sole 3 continues to descend, according to arrow D, and brings down, according to arrow D, the stripper 8 by pressing the four springs 9a, 9b, 9c, 9d.
  • the subpart upper 17 and lower sub-part 18 of the front part 16 come then imprison the anterior zone 12a of the metal part 12, by complementarity of the throat 19 with the projection 21.
  • the upper jaw 23 and the lower jaw 24 of the posterior part 22 close, according to the arrow C, and then come to trap the posterior zone 12b of the metal part 12, by complementarity of the groove 26 with the projection 27.
  • a fourth step ( Figures 8 and 8A) the upper sole 3 begins to rise, according to arrow U, canceling the pressure force which is exerted on stripper 8 which also rises, canceling the pressing force which is exerted on the upper jaw 23.
  • the two jaws 23, 24 open thus, according to arrow O, thanks to the springs 42.
  • the anterior zone 12a and the zone posterior 12b of the metal part are thus released.
  • the upper sole 3 rises, according to the arrow U, and the twisted metal part 12, still attached to the two ribbons 11a, 11b, will be evacuated by the advance, according to arrow T, of the strip 7.
  • the angular clearance 33 of the upper jaw 23 allows the circulation of exit from the twisted part 12, while keeping the two jaws and the element of pivoting still in the turned position.
  • the upper sole 3 completes its ascent stroke, according to arrow U.
  • the ascent lever 61 with its protrusion 62, hooks the projection 63 of the rack 53.
  • the rack 53 goes up, according to arrow E, which makes it turn in direction reverse, according to arrow S, and return to its initial point the whole element of pivoting 36-jaws upper 23 and lower 24 open.
  • the twisted piece 12 then completes its complete exit from the twisting device 13, and at the same moment a part to be twisted arrives and is placed between the two jaws open 23, 24 and practically returned to an angular position equal to zero.
  • This six-step cycle can start again.
  • the output rate of twisted parts is identical to that defined by the tool to follow, the drives being completely mechanical.
  • the angle ⁇ of rotation of the element set of pivoting 36-two jaws 23, 24 is equal to or slightly greater than the angle ⁇ desired for torsion, the latter case due to the return due to the elasticity of the metal constituting the part 12.
  • the twist angle ⁇ depends only on the part to be produced (its materials, its forms) and the clearance necessary for its outlet circulation outside the jaws 23, 24. By respecting these two criteria, all ranges for the twist angle ⁇ are possible.
  • the present invention is not limited to the method, by means of setting in work and in the embodiment which has just been described. All types of parts metal can be twisted, for example flat bars, profiles various. It is enough to adapt the conformation of the sockets 19, 21, 26, 27 on the parts anterior 16 and posterior 22. By modifying the transverse location and longitudinal, relative to the tool to be followed, of the fixed front locking part 16 and the rear locking and rotating part 22, the shape and extent of the twist zone 12c. Similarly, the axis of rotation of the pivoting element 36 can be different, and completely offset, from the axis of symmetry of the part to be twisted, by modifying the position of the grip elements 19, 21, 26, 27 on the front part 16 and rear part 22, this to obtain specific twisted parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Transmission Devices (AREA)
  • Forging (AREA)
  • Adornments (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP01420092A 2000-04-28 2001-04-12 Wringvorrichtung und Folgewerkzeug mit solcher Vorrichtung Expired - Lifetime EP1149642B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0005570 2000-04-28
FR0005570A FR2808231B1 (fr) 2000-04-28 2000-04-28 Procede pour vriller une piece metallique, dispositif de vrillage et outil a suivre equipe d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP1149642A1 true EP1149642A1 (de) 2001-10-31
EP1149642B1 EP1149642B1 (de) 2005-11-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01420092A Expired - Lifetime EP1149642B1 (de) 2000-04-28 2001-04-12 Wringvorrichtung und Folgewerkzeug mit solcher Vorrichtung

Country Status (5)

Country Link
EP (1) EP1149642B1 (de)
AT (1) ATE309058T1 (de)
DE (1) DE60114695T2 (de)
ES (1) ES2249399T3 (de)
FR (1) FR2808231B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104785595A (zh) * 2015-04-22 2015-07-22 重庆飞龙江利汽车部件有限公司 一种用于工件扭弯成型的装置
CN107116135A (zh) * 2017-05-24 2017-09-01 贵州天义电器有限责任公司 一种全自动捲圆切断装置
CN111250601A (zh) * 2020-01-17 2020-06-09 昆山新顺鑫精密模具有限公司 一种90°扭转连续模
WO2020257443A1 (en) * 2019-06-20 2020-12-24 Tsc, Llc Integrated pultruded composite profiles and method for making same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102847806A (zh) * 2012-09-17 2013-01-02 张家港市隆旌汽车零部件有限公司 换选档拉丝支架的扭弯成型模具
CN112170681A (zh) * 2020-09-22 2021-01-05 丁志军 一种铝型材打孔用推料装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1395617A (en) * 1920-06-03 1921-11-01 Stubbs William Apparatus for twisting metal bars
US3696654A (en) * 1971-01-25 1972-10-10 Karl A Bohn Band iron stock working tool with a twist device thereon

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1395617A (en) * 1920-06-03 1921-11-01 Stubbs William Apparatus for twisting metal bars
US3696654A (en) * 1971-01-25 1972-10-10 Karl A Bohn Band iron stock working tool with a twist device thereon

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104785595A (zh) * 2015-04-22 2015-07-22 重庆飞龙江利汽车部件有限公司 一种用于工件扭弯成型的装置
CN107116135A (zh) * 2017-05-24 2017-09-01 贵州天义电器有限责任公司 一种全自动捲圆切断装置
CN107116135B (zh) * 2017-05-24 2018-12-07 贵州天义电器有限责任公司 一种全自动捲圆切断装置
WO2020257443A1 (en) * 2019-06-20 2020-12-24 Tsc, Llc Integrated pultruded composite profiles and method for making same
CN111250601A (zh) * 2020-01-17 2020-06-09 昆山新顺鑫精密模具有限公司 一种90°扭转连续模

Also Published As

Publication number Publication date
ES2249399T3 (es) 2006-04-01
FR2808231A1 (fr) 2001-11-02
DE60114695D1 (de) 2005-12-15
ATE309058T1 (de) 2005-11-15
EP1149642B1 (de) 2005-11-09
DE60114695T2 (de) 2006-07-20
FR2808231B1 (fr) 2002-07-19

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