EP4180141A1 - Procédé de laminage destiné à la fabrication de produits profilés et dispositif de laminage - Google Patents

Procédé de laminage destiné à la fabrication de produits profilés et dispositif de laminage Download PDF

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Publication number
EP4180141A1
EP4180141A1 EP21207571.7A EP21207571A EP4180141A1 EP 4180141 A1 EP4180141 A1 EP 4180141A1 EP 21207571 A EP21207571 A EP 21207571A EP 4180141 A1 EP4180141 A1 EP 4180141A1
Authority
EP
European Patent Office
Prior art keywords
product
burnishing
profile
rollers
flat
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.)
Pending
Application number
EP21207571.7A
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German (de)
English (en)
Inventor
Stefan Zimmermann
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.)
Schmitz Cargobull AG
Original Assignee
Schmitz Cargobull AG
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 Schmitz Cargobull AG filed Critical Schmitz Cargobull AG
Priority to EP21207571.7A priority Critical patent/EP4180141A1/fr
Publication of EP4180141A1 publication Critical patent/EP4180141A1/fr
Pending legal-status Critical Current

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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
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
    • B21D5/083—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers for obtaining profiles with changing cross-sectional configuration
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • 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
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
    • 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
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers

Definitions

  • the invention relates to a rolling method for producing profile end products from a metal flat product by means of roll forming. Furthermore, the invention relates to a burnishing device for producing profile end products from a metal flat product by means of roll forming with a plurality of burnishing rollers arranged one behind the other in a burnishing direction for forming the metal flat product into an intermediate profile product.
  • Roll forming also known as rolling or roll profiling, is a manufacturing process that is regularly used to manufacture profiles and tubes from a flat metal product. Burnishing devices for carrying out such methods have also been known for a long time. Roll-formed components are used for a wide variety of purposes.
  • the flat metal product is typically provided as a coil and fed to the rolling device in an endless manner. Before the metal sheet is subjected to roll forming, recesses are often punched into the metal sheet. The flat metal product is then formed by roll forming. For this purpose, the flat metal product is gradually bent with the aid of several pairs of rollers arranged one behind the other in a line, through which the flat metal product is guided, until the desired final cross-section is reached. At the end of the line, the profile is cut to the desired length.
  • rolling devices are often relatively complex and expensive, but still only allow a limited throughput if the forces to be used for the roll forming are to be limited.
  • the present invention is therefore based on the object of designing and developing the burnishing method and the burnishing device of the type mentioned at the outset and previously explained in more detail in such a way that a higher throughput can be achieved without disproportionate effort.
  • the stated object is also achieved in a roller burnishing device according to the preamble of claim 13 in that a dividing device for dividing the intermediate profile product into at least two end profile products is arranged in the roller burnishing direction after the burnishing rollers.
  • the invention has thus recognized that it is expedient first to roll form an intermediate profile product and then to produce individual profile end products from this intermediate profile product. In this way, several work steps for rolling several profile end products can be combined efficiently, so that an increase in throughput can be achieved. If two profile end products are made from the profile intermediate product, the cycle times for the production of the profile end products can be reduced by about half.
  • a metal flat product for example in the form of a sheet metal strip or a sheet metal blank or blank, is used to produce an intermediate profile product which has a profile in cross section which corresponds to a profile of two or more profile end products.
  • an intermediate profile product which has a profile in cross section which corresponds to a profile of two or more profile end products.
  • roller burnishing process and the roller burnishing device for producing profile end products from a metal flat product by means of roll forming are described together below, without distinguishing between the roller burnishing process and the burnishing device in detail.
  • feature is particularly preferred in each case with regard to the burnishing method and in regard to the burnishing device.
  • the flat metal product is formed into an intermediate profile product that is at least essentially mirror-symmetrical and/or at least essentially point-symmetrical in cross section.
  • Burnishing a correspondingly symmetrical intermediate profile product can contribute to a significant reduction in component stresses.
  • a corresponding intermediate profile product can expediently be divided into two end profile products with a substantially identical cross section. In this way, two similar profile end products can be manufactured.
  • Profile end products manufactured in this way are particularly suitable for use as components in which it is particularly important that two components have the same length. This is the case, for example, with the frame construction of box bodies for commercial vehicles, in which the length of opposite frame elements should be as identical as possible.
  • the burnishing rollers are less heavily loaded when burnishing intermediate profile products with an at least essentially mirror-symmetrical and/or at least essentially point-symmetrical cross section. As a result, the burnishing rollers can be made smaller. This in turn leads to cost advantages for corresponding rolling devices.
  • the flat metal product can expediently be reshaped into an intermediate profile product that is essentially U-shaped in cross section.
  • a U-shaped profile intermediate product can be divided particularly easily into two L-shaped profile end products with essentially the same cross section, which are widely used in commercial vehicle construction.
  • particularly precise profile end products can be produced by guiding the flat metal product through a roller gap formed by a pair of roller burnishing rollers and thus forming it.
  • the metal product is formed at least in sections, so that by guiding the metal flat product through the pairs of rollers arranged one behind the other, the metal flat product is gradually formed into an intermediate profile product.
  • the flat metal product can be formed particularly precisely, so that profiled end products can be manufactured with close tolerance limits.
  • profile end products with particularly small bending radii can be realized.
  • the metal flat product is at least partially shaped by the burnishing rollers in such a way that an intermediate profile product with an at least partially double-layered trained cross-section is obtained. Due to this double layer, profiles with material thicknesses can be manufactured in a simple manner, which otherwise could not be manufactured or only with considerable effort.
  • the flat metal product is particularly preferably formed by the burnishing rollers in such a way that an intermediate profile product is obtained with a cross-section that is almost entirely double-layered. With an almost continuously double-layered cross-section, high flexural rigidity is ensured over the entire cross-section of the intermediate profile product.
  • the intermediate profile product is divided into two profile end products at a section that is not formed in two layers. Sharing can be done very easily, gently and with little effort.
  • the profile end products have a satisfactory flexural rigidity almost throughout, without the intermediate profile product being difficult to divide into the profile end products.
  • Recesses are preferably introduced by punching.
  • the recesses and/or indentations are made in the flat metal product before the flat metal product comes into contact with the burnishing rollers.
  • Recesses and/or indentations can be made comparatively easily in a flat metal product, so that it is advantageous to carry out this method step before the roller burnishing.
  • the advantages of the method according to the invention are particularly evident when the intermediate profile product is separated into at least two end profile products by cutting rollers.
  • the axis of rotation of the cutting roller used for this purpose is arranged transversely to the rolling direction. Using cutting rollers Long intermediate profile products can be continuously cut particularly easily and precisely. Alternatively, other cutting processes such as laser cutting can be used in this context.
  • the flat metal product can be pulled off a coil and brought into endless contact with the burnishing rollers. In this way, the cost of warehousing for stocking circuit boards can be saved. In addition, the packaging can take place very late in the process with regard to the component length, which can increase production flexibility.
  • the flat material product can be provided as a circuit board. The use of circuit boards when carrying out the method according to the invention offers advantages in terms of flexibility, but is also associated with losses in productivity.
  • the metal flat product is brought into contact with the burnishing rollers as a coated metal flat product.
  • a zinc layer can have an advantageous effect on the quality of the profile end products in question here.
  • a layer of zinc is suitable to protect the material of the profile end product from corrosion. Galvanizing of the profile end product is then typically no longer necessary.
  • Coated flat metal products are usually provided with the coating on their upper and lower surfaces.
  • the edges usually have no coating, so that these edges are particularly exposed to environmental influences. These environmental influences lead to corrosion, for example.
  • profile intermediate products which can have an almost continuously double-layered cross-section, at a non-double-layered section in a special way. This is because the severing can take place in such a way that the edge formed during the severing is at least partially bent around a previously existing edge.
  • the pre-existing edge is the edge of the coil or board. In other words the formed edge is bent in the direction of the other edge by dividing, whereby the edge is covered in sections. This reduces the environmental influences on the uncoated edge. The area potentially affected by corrosion is thus reduced.
  • the intermediate profile product can be cut to length transversely to the burnishing direction and/or the longitudinal extent of the intermediate profile product. This process step ensures that the profile end products have the desired length, and in particular the same length in pairs.
  • the profile end products resulting from an intermediate profile product are therefore particularly preferably cut to length together.
  • the dividing device comprises at least one cutting roller, the axis of rotation of which is arranged transversely to the rolling direction.
  • the forming of the flat metal product to form the intermediate profile product can be carried out particularly advantageously by a burnishing device whose burnishing rollers are arranged one behind the other as burnishing roller pairs, each with a roller gap between the burnishing rollers forming a pair.
  • a burnishing device whose burnishing rollers are arranged one behind the other as burnishing roller pairs, each with a roller gap between the burnishing rollers forming a pair.
  • Recesses and/or indentations can be introduced into the flat metal product in a particularly simple manner by means of a separating device arranged in front of the burnishing rollers in the burnishing direction.
  • a separating device arranged in front of the burnishing rollers in the burnishing direction.
  • the separating device is particularly preferably designed as a punch, which can efficiently introduce recesses into the flat metal product.
  • a cutting device for cutting the profile end product to length can be arranged after the dividing device in the rolling direction. With the cutting-to-length device, the profiled end products can be cut to the desired length transversely to the rolling direction and/or the longitudinal extension of the profiled end product, in particular in pairs.
  • roller-curling device 1 according to the invention is shown schematically in a side view.
  • the roller burnishing device 1 comprises, each arranged one behind the other, a separating device in the form of a punch 2, a plurality of pairs of rollers 4 each formed from two roller burnishing rollers 3, a dividing device in the form of a cutting roller 5 and a cutting device 6.
  • a flat metal product 8 provided as a coil 7 is transported through the rolling device 1 in the rolling direction RR.
  • the rolling direction RR corresponds to the longitudinal direction of the metal flat product 8.
  • the metal flat product 8 is pulled off the coil 7 and guided through the punch 2, in which recesses 9, for example in the form of holes, are made in the metal flat product 8.
  • the flat metal product 8 is then conveyed through the pairs of rollers 4 arranged one behind the other.
  • the device for transporting the flat metal product 8 is not shown for the sake of clarity.
  • the pairs of rollers 4 are arranged in such a way that the flat metal product 8 is gradually formed into an intermediate profile product 10 by contact with the pairs of rollers 4 .
  • the intermediate profile product 10 is separated in the longitudinal direction of the intermediate profile product 10 by the cutting roller 5 into two profile end products 11.
  • the cutting roller 5 rotates in the roller burnishing direction RR about an axis of rotation 12 aligned transversely to the roller burnishing direction RR.
  • the profile end products 11 are cut to the desired length by the cutting device 6.
  • the cutting-to-length device 6 comprises a cutting edge 13 which can be moved vertically up and down in the direction of the arrow, which is not identified in any more detail.
  • FIG. 2A-E is shown schematically the forming of the metal flat product 8 in the rolling device 1 in a profile end product 11 .
  • the forming takes place with a plurality of pairs of rollers 4, through which the flat metal product 8 is guided.
  • the burnishing rollers 3 are not shown for the sake of clarity. In addition, several forming steps are combined.
  • the metal flat product 8 is first fed with a flat, horizontal cross-section and, as it passes through a plurality of roller nips formed by the pairs 4 of roller burnishing rollers 3, stepwise into a U-shaped profile reshaped cross section. This is particularly in the Figure 2A
  • two outer sections 14 of the flat metal product 8 are bent upwards in the direction of the arrow, which is not identified in any more detail.
  • the metal flat product 8 after this forming step is indicated by a dashed line in Figure 2A shown.
  • the cross sections in the Figures 2A-C The profiles shown are essentially mirror-symmetrical at any point in time before the intermediate profile product 10 is divided into two end profile products 11 .
  • the plane of symmetry 17 of the profiles is in the Figures 2A-C each shown as a dotted line.
  • the U-shaped intermediate profile product 10 is then divided into two L-shaped end profile products 11 .
  • the intermediate profile product 10 is severed in the middle in the longitudinal direction of the intermediate profile product 10 with the cutting roller 5 and is thus divided, so that two end profile products 11 with the same cross section are produced.
  • the profile intermediate product 10 is divided along the area that is not double-layered.
  • the outer edges 18 of the flat metal product 8 that is shown and is preferred in this respect are uncoated. However, the top and bottom of the flat metal product 8 are coated, in particular galvanized. The coating of the metal flat product 8 is in the Figures 1-4 the better Not shown for the sake of clarity.
  • the edges 18 are arranged opposite one another on the lower side of the intermediate profile product 10 .
  • the cut edge 19 is in the direction of the edge 18 already present on the edge of the metal flat product 8 bent.
  • this edge 18 is placed at least in sections in contact with the edge formed during dividing.
  • the original edge 18 is shielded from environmental influences by the edge adjoining the subsequently formed cut edge 19 .
  • moisture can come into contact with the edge 18 in this way, so that the risk of corrosion can be reduced.
  • FIGS 3A-B are the profile intermediate product 10 and the profile end products 11 from the Fig. 2D-E shown in perspective view.
  • a dashed dividing line 20 is drawn in, which lies in the plane of symmetry of the intermediate profile product 10 .
  • the intermediate profile product 10 is separated into two end profile products 11 along this dividing line 20, so that two mirror-image end profile products 11 with the same cross section are produced.
  • An alternative method of making an intermediate profile product 10' is shown.
  • the cross section of this intermediate profile product 10' is essentially point-symmetrical with a center of symmetry 21.
  • the intermediate profile product 10' is thus designed to be axially symmetrical. It can therefore be divided along a separating cut 20', in which the axis of symmetry of the intermediate profile product 10' is arranged. This results in two L-shaped profile end products 11', which essentially have the same cross section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP21207571.7A 2021-11-10 2021-11-10 Procédé de laminage destiné à la fabrication de produits profilés et dispositif de laminage Pending EP4180141A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21207571.7A EP4180141A1 (fr) 2021-11-10 2021-11-10 Procédé de laminage destiné à la fabrication de produits profilés et dispositif de laminage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21207571.7A EP4180141A1 (fr) 2021-11-10 2021-11-10 Procédé de laminage destiné à la fabrication de produits profilés et dispositif de laminage

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EP4180141A1 true EP4180141A1 (fr) 2023-05-17

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EP21207571.7A Pending EP4180141A1 (fr) 2021-11-10 2021-11-10 Procédé de laminage destiné à la fabrication de produits profilés et dispositif de laminage

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58135704A (ja) * 1982-02-05 1983-08-12 Kawasaki Steel Corp Ｔ形鋼または山形鋼の製造方法および製造装置
US20130136942A1 (en) * 2011-11-29 2013-05-30 Sungwoo Hitech Co., Ltd. Roll forming method and shaped beam produced by using the same
EP2601362A1 (fr) * 2010-08-02 2013-06-12 USG Interiors, LLC Profilé à grille
WO2015056351A1 (fr) * 2013-10-18 2015-04-23 新日鐵住金株式会社 Procédé de fabrication pour acier mis en forme changeant de forme de section transversale dans la direction longitudinale, et dispositif de moulage par rouleau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58135704A (ja) * 1982-02-05 1983-08-12 Kawasaki Steel Corp Ｔ形鋼または山形鋼の製造方法および製造装置
EP2601362A1 (fr) * 2010-08-02 2013-06-12 USG Interiors, LLC Profilé à grille
US20130136942A1 (en) * 2011-11-29 2013-05-30 Sungwoo Hitech Co., Ltd. Roll forming method and shaped beam produced by using the same
WO2015056351A1 (fr) * 2013-10-18 2015-04-23 新日鐵住金株式会社 Procédé de fabrication pour acier mis en forme changeant de forme de section transversale dans la direction longitudinale, et dispositif de moulage par rouleau

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