EP0696486B1 - Verfahren und Vorrichtung zum Runden von Blechstücken - Google Patents

Verfahren und Vorrichtung zum Runden von Blechstücken Download PDF

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Publication number
EP0696486B1
EP0696486B1 EP95108993A EP95108993A EP0696486B1 EP 0696486 B1 EP0696486 B1 EP 0696486B1 EP 95108993 A EP95108993 A EP 95108993A EP 95108993 A EP95108993 A EP 95108993A EP 0696486 B1 EP0696486 B1 EP 0696486B1
Authority
EP
European Patent Office
Prior art keywords
rounding
sheet metal
metal blank
rounded
section
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
EP95108993A
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German (de)
English (en)
French (fr)
Other versions
EP0696486A1 (de
Inventor
Michael Baumgartner
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.)
Elpatronic AG
Original Assignee
Elpatronic AG
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Filing date
Publication date
Application filed by Elpatronic AG filed Critical Elpatronic AG
Publication of EP0696486A1 publication Critical patent/EP0696486A1/de
Application granted granted Critical
Publication of EP0696486B1 publication Critical patent/EP0696486B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
    • B21D5/146—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers one roll being covered with deformable material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2676—Cans or tins having longitudinal or helical seams

Definitions

  • the invention relates to a method and a device according to the corresponding Claims for rounding sheet metal pieces.
  • the piece of sheet metal is turned into a curved shape in a round apparatus brought in that, for example, by a round wedge to an inner Round roller is guided and immediately thereafter runs through a press station the inner round roller and an outer round roller, which two rollers are pressed together.
  • the bent sheet essentially runs along the entire rounding circle, so that the one lying in the rounding position Sheet presented as an almost closed cylinder jacket. In practice it can Rounding circle or the rounding layer by the weight and the elasticity of the curved sheet can be slightly deformed, which is due to guide means for the rounded Sheet metal section is avoidable.
  • the radius of the rounding circle is determined by the radius of the inner round roller, by the position of the round wedge and by the elasticity of the sheet material (Sheet thickness and yield strength). It is usually used in the manufacture of can frames set so that it is rather smaller than the radius of the welded Frame so that the rounded plate is a cylinder jacket, whereby the axially running edges slightly overlap each other.
  • the guide means usually consist of the rounded sheet metal section an essentially cylindrical internal round mandrel and an essentially hollow cylindrical outer guide, the space in between the the round gap lying in the rounding circle. After the rounding is completed the piece of sheet metal is ejected from the round gap in the axial direction and another Sheet piece inserted into the bending device and the round gap.
  • the cycle time required for rounding a piece of sheet metal is set at the above known methods described together from the time taken for the rounding is necessary and from the time necessary for the expulsion.
  • the Rounding time determined by the feed rate and the rounding Length of the sheet.
  • the ejection time is determined, among other things, by the axial Length of the rounded piece of sheet metal. In other words, that means the sheets the round apparatus with a minimum distance from each other not from the rounding process itself, but from the axial expansion the rounded piece of sheet metal and the ejection mechanism used is dependent
  • US-2 719 562 shows a round apparatus in which the finished rounded sheets in caught in a collecting tray and removed in batches from the round apparatus.
  • the sheets can be stored temporarily in the catch tray, as widen the curve back a little bit elastically. This leaves between Round roller and intermediate sheet metal some space for the new to be rounded Sheet.
  • the cycle time for rounding is reduced somewhat on average, because it is not Sheet by sheet must be ejected individually and so rounding only is interrupted when the stack is removed.
  • the object of the invention is now to further increase the cycle time for rounding reduce and in particular to enable the cycle time reduction even then comes into being when the sheets come out of the Round apparatus can be removed.
  • the rounding quality should not be reduced in any way and there should also be no significantly higher expenditure on equipment, e.g. with a view to a faster ejection mechanism. This The problem is solved by the method and the device as described in the corresponding Claims are defined.
  • means are provided to bring the rear part of the rounded plate into the transport position. This is possible by elastic deformation of the front part of the rounded sheet through the guide means so that the rounded rear part of the sheet is under load and, as soon as released by the pressing point, into the transport position jumps. It is also possible to remove the sheet immediately after finishing Braking the front rounding process so abruptly that the rear area thrown out of the rounded position into the transport position by its inertia becomes.
  • a piece of sheet metal 1 is in a direction designated Z Pressing point P (indicated by a double arrow) is fed to a rounding device
  • the rounding device itself is not shown in FIG. 1a.
  • Rounding devices are known per se; an embodiment of such a rounding device, which are part of a rounding apparatus shown in FIGS. 2 and 3 80 forms is described in more detail below with reference to FIG. 3.
  • the sheet metal piece 1 which has been flat until now, is plastically deformed in an arcuate manner, such that after leaving the press point P there is a desired has a constant radius of curvature.
  • the leading, curved part of the sheet metal piece 1 thus runs into a natural rounding position after leaving the press point P.
  • the corresponding rounding circle is dash-dotted in Fig. 1a shown and labeled A.
  • an ejection circle B shown in dash-dotted lines.
  • the middle-point B's ejection circle B is opposite the center point A 'of the rounding circle A in Offset towards Z.
  • the intersections of the two circles A and B are designated M, M '.
  • the ejection circle B defines a transport position for the rounded Piece of sheet metal 1; as soon as the sheet metal piece 1 is in this transport position (as this happens, is described below), it can also be done by itself known, not shown in the drawing ejection mechanism in axial, i.e. direction perpendicular to the plane of the drawing from the rounding apparatus ejected and transported, for example, to a welding device are no longer related to the subject of the present invention.
  • the sheet metal piece 1 is according to the invention on Intersection M 'from the rounding circle A into the ejection circle B, which does not correspond to the rounding position, in a later described with reference to FIG. 2 Directed way.
  • the rear area of the sheet metal piece 1 is through the press point P still fixed, which has the consequence that the between the press point P and the Intersection M 'lying sheet metal section elastically deformed.
  • FIGS. 1a-1d are only exemplary.
  • the space for the subsequent sheet is larger or should be smaller, the leading sheet later or earlier from the rounding circle be directed away;
  • it is not mandatory (but inexpensive) as an ejection circle B. a circle as such or the same radius of curvature as in the rounding circle A to be provided.
  • Fig. 2 shows schematically and very simplified a device or a rounding apparatus 80 for performing the method according to FIGS. 1a to 1c.
  • the rounding apparatus 80 has a rounding device 10 with the aforementioned press point P assigned to rounding circle A.
  • the well-known Rounding device 10 itself is not closer to FIG. 2 for the sake of simplicity shown.
  • the rounding apparatus 80 has guide means 70 for guidance of the rounded piece of sheet metal 1.2; an inner round mandrel 20 and an outer guide 30 together form a round gap 40, which is closed by an end stop 31 is.
  • the rounding apparatus 80 is open with the one already mentioned the ejection circuit B aligned ejection mechanism, of which only two ejection cams 50.1 and 50.2 are shown in FIG.
  • the exhaust cams 50.1 and 50.2 act axially, i.e. perpendicular to the drawing plane Direction.
  • ejection cam 50.1 and 50.2 are in the guide surfaces of the Internal round mandrel 20 or the outer guide 30 corresponding recesses 22, 37, 36 provided.
  • ejection cams 50.1, 50.2 instead of the ejection cams 50.1, 50.2 other means of ejection are used.
  • the circular gap 40 has two sections 41, 42.
  • the first section 41 allows to run the piece of sheet metal 1 or 2 into its rounding position, so it corresponds the rounding position and contains a section of the rounding circle A; it ends at the intersection M 'of the two circles A and B.
  • the second section 42 begins at the intersection M ', contains a section of the ejection circle B and ends in End stop 31.
  • the sections 41, 42 are through the inner dome 20 and External guide 30 limited.
  • the inner round dome 20 is lemon-shaped in cross section formed, which corresponds to the overlap area of circles A and B.
  • the outside tour 30 is substantially hollow-cylindrical and follows in its Cross section of the ejection circle B.
  • the shift between rounding circle A and ejection circle B i.e. the distance between center points A 'and B' can e.g. then be chosen that a piece of sheet metal 1 or 2 entering the rounding circle A is not included the inlet-side discharge cam 50.2 comes into conflict.
  • the rounding method described in connection with FIGS. 1a to 1c, that can be carried out with a device according to FIG. 2 represents the simplest variant of the method according to the invention and required in the area of the round gap 40 a minimum of guide surfaces (theoretically only the final guide after the Intersection M ').
  • This variant is for sheet metal pieces with sufficient inherent stability and elasticity applicable.
  • the inherent stability essentially depends on the modulus of elasticity the sheet metal used, the sheet thickness and sheet size and from the desired rounding radius.
  • Such an expanded method and a corresponding device are described in connection with Figures 3 to 9.
  • FIG. 3 shows a further embodiment of the device according to the invention Rounding of pieces of sheet metal.
  • the outer guide 30 has a central part 34 and an end part 35 which carries the end stop 31.
  • the outer guide 30 has a retaining element 32 equipped.
  • the retaining element 32 has a guide surface 33, a hook-shaped locking groove 38 and an arcuate support surface 39.
  • the mode of operation of the retaining element 32 is described below with reference to FIG Figures 6 to 9 described.
  • Between the retention element 32 and the middle one Part 34 or between the middle part 34 and the end part 35 are the recesses 36 and 37 are arranged, in which the ejection cams 50.1 and 50.2 move.
  • the recess in the inner round dome opposite the recess 37 20 is again designated with 22.
  • Guide surfaces of the outer guide 30 are everywhere outside the ejection circle B, which defines the transport position of the rounded sheet metal piece. According to 3, these guide surfaces are designed polygonal.
  • the inner round dome 20 has one over the rounding circle A area 21 projecting into the circular gap 40.
  • FIG. 3 The mode of operation of the device according to FIG. 3 will be explained in the following with the aid of figures 4 to 9, which schematically illustrate another, analogous to FIGS. 1a to 1c, variant of the method according to the invention which can be carried out in this device, but this time in six consecutive phases.
  • the in the Active guide surfaces in each phase are indicated with hatching and in Based on Fig. 3 with the apostrophized reference numerals of the corresponding device parts designated.
  • the leading part of the sheet metal piece 1 already has the press point P. happens and is through the area 21 of the inner dome projecting over the rounding circle A. 20 led.
  • the rounded sheet metal part is easily deformed and pressed against the guide surface 21 'by its elasticity. It follows from this a precisely defined position of the leading one even with one-sided guidance Piece of sheet metal part.
  • the guide surface 11 'of the is also active in this phase Rounding wedge.
  • the leading part of the sheet metal piece 1 has the second section 42 of the circular gap 40 (Fig. 3) reached and is there mainly by the outer Guide surface 34 'guided on the ejection circle B and thereby from the guide surface 21 'pushed away
  • Fig. 6 shows the phase of the rounding process immediately after the end edge of the rounded sheet metal piece 1 has left the press point P.
  • the end area of the Sheet metal piece 1 is always through the guide surface 33 'of the retaining element 32 still led on rounding circle A.
  • the sheet metal piece 1 moves thanks its kinetic energy continues in the circular gap 40, on the ejection circle B. through the inner and outer guide surfaces 20 ', 34', 35 'of the inner dome 20 or the outer guide 30.
  • the guide surface 33 of the retaining element 32 is designed so that the end edge of the sheet metal piece 1 has not yet reached its end has when the front edge abuts the end stop 31.
  • Figures 7 and 8 show how the sheet metal piece 1 by the action of the impact the end stop 31 is compressed (Fig. 7), thereby the end edge of the sheet metal piece 1 slides over the guide surface 33 'and finally leaves it, after which the trailing part of the sheet metal piece 1 against the ejection circle B. relaxed (Fig. 8). It is expected that the trailing part over the discharge circle B springs out and it is advantageous to move this spring through the arc Limit the support surface 39 'of the retaining element 32. Will that Sheet piece 1 strongly compressed by the impact on the end stop 31, is the polygonal Design of the outer guide surfaces 34 'and 35' as in FIG. 3 represented of particular advantage, since the sheet metal piece 1 in the resulting Extensions of the circular gap 40 can dodge and spring back better.
  • the sheet runs on the rounding circle A until it is braked abruptly by an end stop or other suitable means is what the rear end only because of its kinetic energy slides over the surface 33 'and reaches the retaining element.
  • An elastic Deformation of the front part of the sheet is not necessary, but it can supportive.
  • the method according to FIGS. 4 to 9 is due to the additional Guiding in the infeed area and by guiding the trailing edge in the end area advantageous for sheet metal pieces with relatively low inherent rigidity in particular 7 to 9 show that the method according to this variant (in contrast to the variant according to Fig. 1a to 1c) in addition to the resilient tension of the rounded Sheet metal piece also uses its kinetic energy to the trailing Part on the output circle B, i.e. to move to the transport position. For this Basically, this method is also to be preferred for less resilient pieces of sheet metal.
  • the front sheet metal section to the inside could also have a different transport position to get voted; for example, instead of the outer guide 30 an internal guide, e.g. a correspondingly trained inner round dome, the front Steer the sheet metal section outwards and deform it elastically, whereby then likewise the end section which has run out of the rounding device 10 is spring-loaded follow into the transplant position opposite the rounding position and the Rounding position for the subsequent sheet would clear.
  • an internal guide e.g. a correspondingly trained inner round dome

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP95108993A 1994-08-10 1995-06-12 Verfahren und Vorrichtung zum Runden von Blechstücken Expired - Lifetime EP0696486B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CH2473/94 1994-08-10
CH247394 1994-08-10
CH247394 1994-08-10
CH324294 1994-10-31
CH3242/94 1994-10-31
CH324294 1994-10-31

Publications (2)

Publication Number Publication Date
EP0696486A1 EP0696486A1 (de) 1996-02-14
EP0696486B1 true EP0696486B1 (de) 2002-05-22

Family

ID=25690543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108993A Expired - Lifetime EP0696486B1 (de) 1994-08-10 1995-06-12 Verfahren und Vorrichtung zum Runden von Blechstücken

Country Status (8)

Country Link
US (1) US5592844A (enrdf_load_stackoverflow)
EP (1) EP0696486B1 (enrdf_load_stackoverflow)
JP (1) JP2655635B2 (enrdf_load_stackoverflow)
KR (1) KR100344746B1 (enrdf_load_stackoverflow)
CN (1) CN1057948C (enrdf_load_stackoverflow)
BR (1) BR9503589A (enrdf_load_stackoverflow)
DE (1) DE59510211D1 (enrdf_load_stackoverflow)
TW (1) TW281647B (enrdf_load_stackoverflow)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6167737B1 (en) * 2000-04-17 2001-01-02 Duro Dyne Corporation Vane forming apparatus
US20030120127A1 (en) * 2001-11-07 2003-06-26 Wylie Ian Gordon Norman Process for destruction of halogenated organic compounds in solids
US7360386B2 (en) * 2003-10-14 2008-04-22 Century, Inc. Sweep unit assembly
EP2172327A4 (en) * 2007-07-12 2017-01-04 Sekisui Chemical Co., Ltd. Device for curling strip member with reinforcing material, method for making spiral pipe, and device for making spiral pipe
KR100964327B1 (ko) 2008-01-31 2010-06-17 황찬오 금속용기의 성형장치 및 그 방법
ES2359193T3 (es) * 2008-04-18 2011-05-19 Soudronic Ag Aparato de redondeo con un elementeo articulado de redondeo previo en la estación de redondeo y procedimiento de redondeo de chapas.
CH700092A2 (de) * 2008-12-09 2010-06-15 Soudronic Ag Vorrund-Element an einem Rundapparat.
CN102218457B (zh) * 2011-01-15 2013-07-03 安徽艾可蓝节能环保科技有限公司 一种净化器壳体封装装置的工作方法
WO2015003276A1 (de) * 2013-07-08 2015-01-15 Andritz Soutec Ag Verfahren zur herstellung von ringförmigen teilen und eine anwendung des verfahrens
CN103495626B (zh) * 2013-10-09 2015-04-29 郑州金泰制罐有限公司 上气缸全自动卷圆机
CN103495625B (zh) * 2013-10-09 2015-06-10 郑州金泰制罐有限公司 五轴全自动卷圆机
CN104001764B (zh) * 2014-05-29 2016-01-20 陕西科技大学 一种螺旋卷管机
CN108555078A (zh) * 2018-04-09 2018-09-21 汕头市信力制罐设备有限公司 一种马口铁成圆方法及装置
CN119368596A (zh) * 2024-12-30 2025-01-28 新乡市和德包装材料有限公司 一种烤漆桶加工用智能化成型设备及其方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR815979A (fr) * 1936-01-21 1937-07-27 Schuler L Ag Procédé et dispositif pour recevoir les corps de boîtes métalliques et pour les porter à un mandrin à souder ou à agrafer
US2719562A (en) * 1950-07-15 1955-10-04 Raymond E Beegle Apparatus for forming metal channels and tubes
CH289744A (de) * 1950-09-25 1953-03-31 Lechner Margarete Elektrizitätszähler.
CH671893A5 (enrdf_load_stackoverflow) * 1987-05-05 1989-10-13 Elpatronic Ag
CH671945A5 (enrdf_load_stackoverflow) * 1987-05-07 1989-10-13 Elpatronic Ag
CH680714A5 (enrdf_load_stackoverflow) * 1989-08-22 1992-10-30 Elpatronic Ag
EP0574670B1 (de) * 1992-06-18 1996-12-11 Elpatronic Ag Verfahren und Vorrichtung zum Formen von Blechen zu Dosenzargen und Zuführen der Dosenzargen zu einer Schweissstation

Also Published As

Publication number Publication date
KR100344746B1 (ko) 2002-11-02
DE59510211D1 (de) 2002-06-27
US5592844A (en) 1997-01-14
BR9503589A (pt) 1996-04-09
CN1057948C (zh) 2000-11-01
JPH0866733A (ja) 1996-03-12
TW281647B (enrdf_load_stackoverflow) 1996-07-21
EP0696486A1 (de) 1996-02-14
JP2655635B2 (ja) 1997-09-24
CN1121448A (zh) 1996-05-01

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