EP1165265B1 - Procede pour cintrer une tole et dispositif a plusieurs rouleaux pour mettre en oeuvre ledit procede - Google Patents

Procede pour cintrer une tole et dispositif a plusieurs rouleaux pour mettre en oeuvre ledit procede Download PDF

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Publication number
EP1165265B1
EP1165265B1 EP00901464A EP00901464A EP1165265B1 EP 1165265 B1 EP1165265 B1 EP 1165265B1 EP 00901464 A EP00901464 A EP 00901464A EP 00901464 A EP00901464 A EP 00901464A EP 1165265 B1 EP1165265 B1 EP 1165265B1
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EP
European Patent Office
Prior art keywords
sheet
rounding
rounded
plate
edge
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
EP00901464A
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German (de)
English (en)
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EP1165265A1 (fr
Inventor
Eugen Mueller
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
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Elpatronic AG
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Publication date
Application filed by Elpatronic AG filed Critical Elpatronic AG
Publication of EP1165265A1 publication Critical patent/EP1165265A1/fr
Application granted granted Critical
Publication of EP1165265B1 publication Critical patent/EP1165265B1/fr
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Classifications

    • 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
    • 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

Definitions

  • the present invention relates to a method for rounding a panel, preferably a sheet, and a two-roll rounding machine for carrying out the method.
  • a method or such a rounding machine are known, for example, from US-A-4,706,488.
  • round process sheet metal parts for the production of particular tubular bodies such as ventilation ducts or filter housings are bent round and fed to the rounding of a subsequent processing station for fixed connection of the adjacent longitudinal edges.
  • Sheets for the stated purpose can be designed differently, as for example for ventilation channels recesses for later connection of a branching pipe or filter housings an actual sieve structure is provided in the sheet, which complicates the processing and makes significant demands on the rounding process.
  • such sheets typically have a thickness of 0.3 to 3mm, the diameter after rounding is between 25 and 500mm. Thinner or even thicker sheets are also processed by round machines to form bodies with other diameters.
  • the two guide rollers were reduced in diameter, so that the distance of the axes of the guide rollers and thus the length of the poorly rounded portion could be reduced.
  • the resulting risk of deflection of the guide rollers was collected by a fourth roller, which rolls as a support roller on the opposite side of the sheet metal path on the guide rollers, this supports and thus prevents unwanted deflection.
  • This four-roll rounding machine has improved properties; the basic problem of insufficient rounding of the leading portion of a sheet is not solved.
  • the leading edge of the sheet is collected at the end of the passage through the rounding machine in a catch rail with appropriately trained grooves, as well as after completion of rounding then resiliently latching subsequent sheet edge, so that the rounded plate of the catch rail can be moved along to the subsequent processing station.
  • two-roll rotary apparatuses are known with which a sheet is rounded between a round roller and a single guide roller provided with a pressure-elastic coating.
  • Such round processes allow, in contrast to the above-mentioned three-spool or four-roll round process perfect rounding of a sheet. If, during the rounding process, the round rollers are spaced apart from each other in phases with uninterrupted feed, straight areas remain between curved points.
  • a sheet metal body can be made with a triangular profile; In the present case, such designs are referred to as tubular.
  • the rounded sheet metal parts are removed axially from the round roller and not fixed in a safety rail.
  • a tether has its place as close to the entry point as possible, but for geometric reasons, it can only lie approximately in the path of the leading edge, and not at the end, but set back. This then leads, at the end of the round process, to a widening of the just-rounded sheet, which is disadvantageous in view of the perfect rounding by the two-roll machine and depending on the subsequent application of the sheet metal body.
  • the present invention is therefore an object of the invention to provide a method and a two-roll rounding machine for bending sheet metal, which do not have the disadvantages mentioned above, ie ensures a perfect rounding quality with secure orientation of the sheet metal body for subsequent processing in a simple manner without additional processing station.
  • leading edge is understood to mean the edge detected first at the inlet and “trailing edge” the opposite edge of the sheet, corresponding to a conventional passage through a circular apparatus. This designation is - unless this is expressly mentioned - maintained, even if by inventive reversal of the feed direction, the original leading edge actually trailing. Also, regarding “feed”, the direction in which the sheet with the leading edge is detected by the entry point, while the opposite direction is referred to as "returning feed”.
  • the leading edge travels around the guide roll by one-half turn around the guide roll by a full 360 °, which is also intended to make a tubular body by 360 ° rounding and then the abutting edges connect to.
  • the leading edge is located after the rounding again immediately before the inlet of the round rollers.
  • the edges of the rounded body have a different end position: As soon as the further portion is rounded such that it runs against the first portion, the leading edge moves away from the inlet point, and runs contrary to the system on her Path backwards.
  • the complete rounding can be achieved in a general and predeterminable position of the edges. This makes it possible to position a safety catch where subsequent deformation of the flawlessly rounded sheet is omitted, with the result that the orientation of the sheet is not lost and a subsequent processing station is eliminated.
  • the entire sheet is rounded into two sections.
  • the rollers are removed from each other until the further advanced sheet metal reaches the inlet point with the following edge.
  • the rounding of the second portion of the trailing edge takes place against the first portion.
  • the rounding is complete. The center of the sheet, and no longer the leading edge, is now at the entry point, the edges of this opposite, on the other side of the round roller.
  • the effect of the above-described embodiment occurs when, after the first partial region has been created, the second partial region according to the invention is rounded. It is not essential under which feed direction, the first portion was rounded; it is conceivable to pass the sheet through the spaced rolls to the center thereof, to close the rolls and then to round the first portion from the center to the "leading edge". Then the feed direction during the rounding of the first and the second portion is the same.
  • the last rounded region is rounded such that the edge leading in this last (here: the second) rounding operatively cooperates with a device for defining the edge position upon completion of the rounding.
  • Fig. 1 shows a conventional Zweiwalzenrundapparat 1 with a round roller 2 and a guide roller 3; the guide roller has a pressure-elastic coating 4, by which a sheet 10 can be pressed against the circular roller 2, such that the sheet comes to rest on the circular roller 2 and is thereby plastically deformed.
  • the sheet 10 has a leading edge V and a trailing edge N.
  • the trailing Edge N is in the inlet 5, the leading edge V immediately before it; the rounding process is completed.
  • the direction of rotation of the rollers 2, 3 with feed of the sheet 10 are marked by the arrows shown.
  • feed refers to the direction of transport of the sheet 10 from left to right through the round apparatus 1 through and "returning feed” the opposite direction.
  • the sheet 10 has curved portions 11 (shown in bold) and straight portions 12 (shown by a double line). Curved areas are created by compressed rollers 2,3 and straight areas by spaced rollers 2,3 during feed.
  • Fig. 2 shows a sheet 10 before rounding with recesses 15 for a future branch pipe, a filter structure 16 and other recesses 17.
  • Such a sheet is difficult to round and lead, as the various structures represent weakenings or stiffening, which as irregularities the Processing.
  • FIG. 3a to 3d shows an exemplary embodiment of the rounding process according to the invention:
  • the sheet metal 10 is positioned with its leading edge V in front of the inlet point 5.
  • a first (shown in bold in the figure) portion 20 of the sheet 10 is already rounded, while a second (shown in the figure by double lines) portion 21 the round apparatus 1 has not yet happened.
  • the first portion 20 extends over half the sheet length, so that the curvature obtained corresponds to a semicircle.
  • FIG. 3 c shows that the feed has been continued until the trailing edge N has reached the inlet point 5.
  • a curvature of the second time range 21 is omitted, since the rollers have been kept 2.3 during the feed at a distance.
  • Fig. 3d shows the sheet 10 after completed rounding process.
  • the second portion 21 has been rounded under retrograde feed from the trailing edge N ago.
  • the rounding in the second partial region has begun at the edge N and has developed towards the first partial region 20 until the second partial region has been completely rounded.
  • Figs. 3a to 3d is schematically illustrated means 30 for defining the edge position of the edges V and N.
  • the means 30 holds the position of the edges V and N when the sheet 10 for further processing e.g. is withdrawn axially from the round apparatus 1. Due to the fact that the edges V and N are not located at the inlet point 5 after rounding, the device 30 can be arranged in the path of the edges V and N, so that a deformation of the rounded sheet 10 is omitted.
  • the device 30 may be located anywhere on the path of the edges V and N; the possibilities are limited only by the space requirement of the device 30 in view of the proximity to the inlet point 5. Likewise, the device 30 may be equipped with not shown in the figures guide grooves for the edges V and N or other guide means.
  • the sheet 10 has been rounded into the device 30, wherein the curves of the second portion 21 has ended as soon as the actually leading edge of the portion 21 cooperated with the means 30 in an operative manner.
  • FIGS. 4a to 4c show a further embodiment of the method according to the invention.
  • Fig. 4a is shown how the sheet 10 by half the round apparatus 1 has been advanced; with spaced rollers 2,3, since a rounding has not occurred.
  • a first portion 25 is in a rounding, which develops from the center of the sheet to the leading edge V out. After completion of the rounding of the first portion 25, the leading edge V is in the inlet 5. A second portion 26 of the sheet 10 remains untouched.
  • the sheet 10 is pulled through the round apparatus with feed until the trailing edge N has reached the inlet point 5.
  • the second portion 26 passes through the rollers 2,3 in a spaced position.
  • FIG. 4c shows how the second partial region 26 is rounded, starting from the trailing edge N toward the beginning 27 of the first partial region 25. After completion of the rounding, the situation corresponds to Fig. 3d.
  • the second (and last) portion 26 has been rounded until the actually leading edge during these rounds cooperates with the means 30.
  • the invention extends over sheet metal, in particular with the masses mentioned in the introduction, to any metallic or non-metallic, plastically deformable material whose rounding is the object of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wire Processing (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Claims (10)

  1. Dispositif pour cintrer un panneau, de préférence une tôle (10) en une position d'éjection définie mécaniquement, au moyen d'une machine de roulage à deux rouleaux (1) présentant un rouleau de roulage (2a), avec un dispositif (30) pour définir la position d'arête des arêtes V et N du panneau (10), sachant que a) une autre zone partielle (21,26) prédéterminée du panneau (10) est cintrée, après qu'une première zone partielle (20,25) prédéterminée ait déjà été cintrée, b) un sens d'avancement du panneau (10) pour cintrer l'autre zone partielle (21,26) est choisi de manière que la zone (21,26), se trouvant dans le cintrage, évolue vers la première zone partielle (20,25) déjà cintrée et c) le cintrage de la dernière zone à cintrer étant effectué de manière que l'arête, située à l'avant pendant le dernier cintrage, à la fin du processus de cintrage coopère fonctionnellement avec le dispositif (30).
  2. Procédé selon la revendication 1, caractérisé en ce que les sens d'avancement, lors du cintrage des zones partielles (20,25) et (21,26), sont opposés.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on cintre globalement trois zones partielles (20,21) et (25,26), les deux zones partielles étant de tailles différentes et de préférence couvrant chacune 50 % de la surface de tôle.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la tôle, cintrée depuis une arête V avant dans la première zone partielle (20), après cintrage de cette zone partielle (20) est avancée plus encore en direction d'une arête arrière N, avec le même sens d'avancement, sachant qu'alors les rouleaux (2,3) installés dans l'appareil de cintrage (1) sont maintenus sans effet, de manière à cesser un processus de cintrage.
  5. Procédé selon la revendication 3, caractérisé en ce que le cintrage de la deuxième zone partielle (21,22) est continué jusqu'à ce que l'arête arrière N vienne en appui sur un dispositif (30) pour définir la position d'arête.
  6. Procédé selon la revendication 1, caractérisé en ce que, pour un cintrage continu de l'ensemble du panneau (10), la première zone partielle (20), qui de préférence va jusqu'à la moitié du panneau (10), en partant d'une première arête avant du panneau (V), est cintrée vers le centre du panneau (10) et, ensuite, le panneau (10) avec le même sens d'avancement, sans qu'il y ait d'autre déformation plastique, est avancé plus encore jusqu'à une arête arrière du panneau (N), suite à quoi il est avancé en sens opposé par celui-ci en partant d'un sens d'avancement de retour, pour effectuer un cintrage de la deuxième zone partielle (25) jusqu'à ce que, d'une part, l'arête arrière du panneau (N) coopère fonctionnellement avec un dispositif (30) de définition de la position d'arête et que, d'autre part, au moins le cintrage complet du panneau (10) soit obtenu.
  7. Machine de cintrage à deux rouleaux pour cintrer un panneau, de préférence une tôle (10), pour la mise en oeuvre du procédé selon l'une des revendications 1 à 6, avec une commande, coopérant fonctionnellement avec les organes de la machine (1), pour le changement du sens d'avancement et la modification de la position active des rouleaux de cintrage (2,3), caractérisé par un dispositif (30) pour la définition d'une position d'arête du panneau cintré, de préférence d'une tôle (10) cintrée.
  8. Machine de cintrage à deux rouleaux selon la revendication 7, caractérisé en ce qu'est prévu un rouleau de guidage (3) muni d'un couche (4) élastique, servant au pressage.
  9. Machine de cintrage à deux rouleaux selon l'une des revendications 7 à 8, caractérisé en ce que le dispositif (30) devant définir la position d'arête est réalisé de manière que, après cintrage du panneau (10), les arêtes. (V,N) soient saisies dans des éléments de guidage, tels que des rainures de guidage, pour assurer la continuation du transport axial du corps (10) cintré.
  10. Machine de cintrage à deux rouleaux selon l'une des revendications 7 à 10, caractérisé en ce que le dispositif (30) devant définir la position d'arête est disposé dans un plan, formé par les axes de rotation des rouleaux de cintrage et de guidage (2,3).
EP00901464A 1999-03-05 2000-02-07 Procede pour cintrer une tole et dispositif a plusieurs rouleaux pour mettre en oeuvre ledit procede Expired - Lifetime EP1165265B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH41099 1999-03-05
CH41099 1999-03-05
PCT/CH2000/000065 WO2000053353A1 (fr) 1999-03-05 2000-02-07 Procede pour cintrer une tole et dispositif a plusieurs rouleaux pour mettre en oeuvre ledit procede

Publications (2)

Publication Number Publication Date
EP1165265A1 EP1165265A1 (fr) 2002-01-02
EP1165265B1 true EP1165265B1 (fr) 2006-03-01

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ID=4186413

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EP00901464A Expired - Lifetime EP1165265B1 (fr) 1999-03-05 2000-02-07 Procede pour cintrer une tole et dispositif a plusieurs rouleaux pour mettre en oeuvre ledit procede

Country Status (6)

Country Link
US (1) US6725699B1 (fr)
EP (1) EP1165265B1 (fr)
AT (1) ATE318663T1 (fr)
AU (1) AU2274800A (fr)
DE (1) DE50012312D1 (fr)
WO (1) WO2000053353A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4439573B2 (ja) * 2008-07-29 2010-03-24 株式会社富士機械工作所 円筒成形装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719562A (en) * 1950-07-15 1955-10-04 Raymond E Beegle Apparatus for forming metal channels and tubes
FR2140317A1 (en) * 1971-06-10 1973-01-19 Masunori Mori Bending appts - bends ends of steel plate
US3879994A (en) * 1973-08-16 1975-04-29 Kenneth Michael Hume Plate rolling
US3899911A (en) * 1974-03-27 1975-08-19 Anvar Sheetmetal rolling machine
FI74414C (fi) 1980-08-18 1988-02-08 Sl Tuotanto Oy Anordning foer framstaellning av ett metallroer.
KR870001074B1 (en) * 1980-09-19 1987-06-04 Kenneth Michael Hume Method for rolling to plate
US4606208A (en) * 1984-05-16 1986-08-19 Kaiser Steel Corporation Pipe forming apparatus
US4706488A (en) * 1984-05-16 1987-11-17 Kaiser Steel Corporation Method of roll forming cylindrical pipe
US4628721A (en) * 1984-05-16 1986-12-16 Kaiser Steel Corporation Method of roll forming cylindrical pipe
CH688437A5 (de) * 1990-04-12 1997-09-30 Haeusler Ag Chr Zum Zylindrisch-Biegen einer Platte dienende Umformmaschine.

Also Published As

Publication number Publication date
ATE318663T1 (de) 2006-03-15
DE50012312D1 (de) 2006-04-27
WO2000053353A1 (fr) 2000-09-14
AU2274800A (en) 2000-09-28
EP1165265A1 (fr) 2002-01-02
US6725699B1 (en) 2004-04-27

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