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EP3110619B1 - Procédé et appareil de formage d'articles profilés - Google Patents

Procédé et appareil de formage d'articles profilés Download PDF

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Publication number
EP3110619B1
EP3110619B1 EP15755660.6A EP15755660A EP3110619B1 EP 3110619 B1 EP3110619 B1 EP 3110619B1 EP 15755660 A EP15755660 A EP 15755660A EP 3110619 B1 EP3110619 B1 EP 3110619B1
Authority
EP
European Patent Office
Prior art keywords
die members
body forming
forming die
path
forming
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.)
Active
Application number
EP15755660.6A
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German (de)
English (en)
Other versions
EP3110619A4 (fr
EP3110619A1 (fr
Inventor
Shichao Ding
Shipeng DING
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.)
Sns Unicorp Pty Ltd
Original Assignee
Sns Unicorp Pty Ltd
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
Priority claimed from AU2014900602A external-priority patent/AU2014900602A0/en
Application filed by Sns Unicorp Pty Ltd filed Critical Sns Unicorp Pty Ltd
Publication of EP3110619A1 publication Critical patent/EP3110619A1/fr
Publication of EP3110619A4 publication Critical patent/EP3110619A4/fr
Application granted granted Critical
Publication of EP3110619B1 publication Critical patent/EP3110619B1/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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/06—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by positive or negative engaging parts co-operating with corresponding parts of the sheet or the like to be processed, e.g. carrier bolts or grooved section in the carriers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band

Definitions

  • the present invention relates to a method and apparatus for forming profiled articles, according to the preamble of claim 1 and 11 respectively, the profiled articles being generally irregular in their body profile.
  • the invention relates to a method and apparatus in which at least one body forming die block is employed to form at least part of the profiled article.
  • the invention is thought to provide an alternative to current stamping techniques.
  • Known systems for forming deformable materials such as sheet metal into a desired profile, particularly a desired uniform profile include roll forming processes. These processes involve passing the sheet metal through a sequence of roll sets, each further deforming the sheet beyond the profile achieved at the previous roll set.
  • the disadvantages of roll forming include redundant deformation resulting from non-uniform strain paths as the strip passes each roll set. This in turn leads to high residual stresses which result in product defects such as edge wave, flare, twist, and so on.
  • Another disadvantage of roll forming is that the distance between the first roll set and the last roll set is relatively large. Consequently, the space needed to house a roll forming assembly is substantial, particularly when forming complex profiles.
  • Chain-die forming has been proposed as an alternative in the production of articles having uniform profiles.
  • Chain-die forming may be considered an extension of roll forming that involves forming the product gradually through at least one pass through a plurality of relatively short die blocks that incrementally form a blank into a final uniform profiled article. That is, as the blank moves through each die pair its cross-sectional profile is changed until the final desired cross-sectional profile is achieved.
  • the roll radii used in chain-die forming are very large and, therefore, the longitudinal strain imparted to the material being formed is generally very small or negligible. As such, chain-die formed articles may have only a small amount of residual stress resulting from the forming process.
  • stamping which is also known as pressing, generally includes a variety of sheet-metal forming manufacturing processes. For example, this may include punching using a machine press or stamping press, blanking, embossing, bending, flanging, and coining. Stamping may involve a single stage operation where every stroke of the press produces the desired form on the sheet metal part, or may alternatively involve a series of stages. The process is usually carried out on sheet metal, but can also be used on other materials, such as polystyrene.
  • Stamping is also discontinuous and requires a blank-holder to hold the blank in place during processing.
  • United States Patent Publication No. 2013/174630 describes an apparatus for forming the profile of deformable materials including tubular sections according to the preamble of claim 1.
  • the apparatus includes at least two sets of die elements, each set including a plurality of die elements respectively arranged to travel along corresponding endless path.
  • the paths each include a forming portion in which die elements of each set are opposed to define a forming space there between.
  • the forming portion of each path is configured so that one or more dimensions of the forming space reduce along the length of the forming portion to simultaneously apply lateral forces to material progressing through the forming portion.
  • the present invention aims to provide an alternative to the aforementioned forming techniques, for the production of articles which may be irregular in profile.
  • the present invention relates to a method and apparatus for forming profiled articles, the profiled articles being generally irregular in their body profile.
  • the invention relates to a method and apparatus in which at least one body forming die block is employed to form at least part of the profiled article.
  • One aspect of the present invention provides an apparatus for forming a profiled article comprising:
  • the apparatus may comprise any number of pairs of body forming die members
  • the apparatus comprises a plurality of pairs of body forming die members, each pair of body forming die members being adapted to act on a respective blank of deformable material independently to form a desired profile on each respective blank.
  • neighbouring body forming die members of the plurality of pairs of body forming die members are generally hingedly connected to one another.
  • neighbouring body forming die members are hingedly connected with minimal clearance therebetween. This ensures a relatively strong structure and a simplified structure compared with, for example, chain-die forming.
  • the apparatus comprises locating elements mounted between adjacent body forming die members, the locating elements being adapted to locate the blanks prior to engagement of the blanks with the body forming die members.
  • adjacent blanks may be connected to one another with a web and the locating elements may be disposed between adjacent body forming die members on a lower section of the forming path and, in use, locate on one or both sides of respective webs.
  • an upper section of the forming path comprises gaps between adjacent body forming die members, the gaps cooperating with and receiving respective locating elements in use.
  • the locating elements may be of any suitable form, provided they serve to substantially restrict movement of the blanks relative to the die members when the locating elements are engaged with the blanks.
  • the locating elements may comprise blocks, cylinders, hooks, bolts or pins.
  • the locating elements comprise pins.
  • each pair of body forming die members is adapted to form the blank of deformable material into the profiled article in a single pass along the forming path. Depending on the complexity of the profile, two or more passes may be required.
  • each pair of body forming die members may be adapted to form the blank of deformable material into a profiled intermediate in a single pass along the forming path, the apparatus comprising at least one additional pair of body forming die members adapted to independently act on the profiled intermediate in at least one additional pass along the forming path, or along an additional forming path of the apparatus, to form the profiled article. If the forming path is that used in the initial forming process, the additional pair of body forming die members is inserted into the forming path, thereby replacing the initial pair of body forming die members. Generally, though, the apparatus will comprise at least one additional forming path along which a respective pair of the at least one additional pair of body forming die members travels.
  • each pair of body forming die members is of a length substantially equivalent to that of the blank of deformable material and acts along the length of the blank. That is, the body forming die members effectively "stamp" the length of the blank with the desired profile.
  • a forming surface of the die member with which the blank comes into contact may be configured with at least a portion of the desired profile.
  • the apparatus preferably comprises first and second mounts that define the forming path therebetween and which mount first and second body forming die members of the pair of body forming die members.
  • the first and second mounts may comprise drive cogs that engage the first and second body forming die members and that are driven by the drive.
  • the first and second mounts may define first and second endless paths along which a first set of first body forming die members and a second set of second body forming die members respectively travel.
  • the first and second mounts may define a limited path along which the pair of body forming die members travel in forward, forming, motion and reverse, resetting, motion.
  • the form of the first and second mounts is not particularly limited.
  • at least one of the first and second mounts may comprise a large radial surface through the forming path.
  • Each of the first and second mounts may comprise a large radius surface through the forming path.
  • the respective radii of the large radius surfaces may be substantially equal, or are different.
  • the curvature centres of radii may be on respective opposite sides of the forming path, or may be on the same side of the forming path.
  • One of the first and second mounts may comprise a large radius surface through the forming path and the other of the first and second mounts may comprise a substantially flat surface through the forming path.
  • the blanks for deformable material may be of any suitable dimensions, dictated by the article to be formed. Generally, it is envisaged that the apparatus will primarily be suitable for use on blanks having a length of from about 100mm to 3,000mm, although the invention is not bound to these dimensions.
  • the locating elements preferably comprise locating pins, although the above option and others may also be appropriate.
  • the pairs of body forming die members may form the blanks of deformable material into the profiled article in a single pass along the forming path.
  • the pairs of body forming die members may form the blanks of deformable material into profiled intermediates in a single pass along the forming path, the method further comprising:
  • the pair of body forming die members may be of a length substantially equivalent to that of the blank of deformable material and acts along the length of the blank.
  • blanks having a length of from about 100mm to 3,000mm will be suitable for use in the method, although the invention is not bound to these dimensions.
  • the present invention relates to a method and apparatus for forming profiled articles, the profiled articles being generally irregular in their body profile.
  • the invention relates to a method and apparatus in which at least one body forming die block is employed to form at least part of the profiled article.
  • FIG 1 a simplified diagram of a forming method 10 from a blank 11 (as shown in Figure 2 ) to a final product 12 (shown in Figure 3 ) is illustrated.
  • the blank 11 experiences 'n' forming passes through body forming die block pairs 13 to gradually achieve the final product 12.
  • the proposed method 10 differs to conventional stamping, which can form the final product in a single stroke, as the proposed method 10 involved rolling of the blank 11 between the die block pairs 13. This does not require a blank-holder, as is the case with stamping, and does not result in the need to trim off earring.
  • each of the die block pairs 13 imparts a desired profile to the blank 11.
  • Each die block pair 13 acts on the blank 11 to facilitate production of a final product 12 having an irregular profile.
  • the proposed method 10 employs whole body forming die blocks 13 instead of discrete die-blocks seen in chain-die forming. It is considered that the use of whole body forming die blocks 13 in the proposed method 10 advantageously ensures that the forming dies have higher strengths than those used in chain-die forming and are free of gaps between the dies. As such, it is envisaged that the surface finish of the final product 12 will be improved. Also, from the mechanical implementation stand point, the structure of the apparatus, discussed below, is simpler and much more robust compared with chain-die forming.
  • the apparatus 40 includes a forming path 41 disposed between a first mount 42 and a second mount 43. Additional mounts may be provided, although this will not be described here in any detail.
  • the first and second mounts 42, 43 include drive gears 44, 44' that engage cooperating first die members 45 and second die members 45' respectively.
  • the first and second mounts 42, 43 may form endless paths (e.g. these may be large radii elliptical mounts) or large radii semi-elliptical mounts. Blanks of deformable material travel along the forming path 41 between the cooperating first and second die members 45, 45' to form final products 46.
  • Each pair of cooperating first and second die members 45, 45' acts on a respective blank to impart the characteristics of the pairs of die members 45, 45' to the blank.
  • each pair of die members 45, 45' acts as a whole body die block that acts on the length of a respective blank independent of any subsequent processing with further die pairs. Therefore, the pairs of die members 45, 45' do not act in a similar way to die pairs in chain-die forming, in which a length of deformable material is sequentially deformed to a desired cross-sectional profile. Rather, the pairs of die members 45, 45' effectively act in a similar way to a conventional stamping mechanism. As illustrated, the profiles of the pairs of die members 45, 45' act independently on a respective blank to form this into the desired profile of the final product 46, which may be generally irregular or may be uniform.
  • the die members 45, 45' are provided in figure 5 .
  • the first die member 45 includes a first profile 55 and the second die member 45' includes a second profile 55'.
  • the first and second profiles 55, 55' are complementary and impart a desired profile to the final product as the blank or intermediate passes between the pair of die members 45, 45'.
  • the pair of die members 45, 45' draws a blank 61 into the apparatus 60 and moves the blank 61 forward 62 to facilitate forming. Once the process is complete, the final product 63 is produced and the apparatus 60 reverses and moves the die members 45, 45' backwards 64 and returns to the start position.
  • FIG. 7 A preferred embodiment of the apparatus of the invention is illustrated in figures 7 and 8 .
  • the apparatus 70 is substantially as described above in that a blank 71 of deformable material is passed between sets of die members 45, 45' to form a final product 73.
  • the apparatus 70 includes locating pins 75 on one side or on opposing sides of the die members 45, 45', generally located in lower gaps between the die members 45, 45' and in cooperation with upper gaps 77 between the die members 45, 45'.
  • the locating pins 75 engage recesses 76 between blanks 71, the blanks 71 in this embodiment being joined by webs 78. This advantageously ensures that the blanks 71 are correctly positioned between respective die members 45, 45' as they pass through the apparatus 70.
  • die members 45, 45' act independently on a respective blank 71 passing through the apparatus 70.
  • Figures 9a to 9c show some exemplary ways in which the apparatus 90 can operate.
  • the system is provided with driving gears 91 which drive the two sets of die elements 45, 45' in phase so as to draw a section through the forming portion.
  • a separate set of driving rolls 92 is provided to propel this section through the forming portion.
  • Figure 9c shows a similar configuration in which a separate set of driving rolls 93 are used to push a section through the forming portion.
  • Figures 10a to 10c show some of the possible configurations of the forming path in the forming portion of the apparatus.
  • each of the opposed forming portions has a large radius and the centres of the radii are respectively on the opposite sides of the forming space.
  • Figure 10b shows a configuration in which one of the forming portions has a large radius and another has an infinite radius or in other words is flat.
  • Figure 10c shows a configuration in which the centres of the radii are both on one side of the forming space and large radii are used for the respective forming portions to provide converging paths between the opposed dies. It is also considered that a configuration may be provided in which the radii of the forming portion are not constant, for example to provide a converging track between the opposed dies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Confectionery (AREA)

Claims (13)

  1. Appareil (40) pour former un article profilé (46) comprenant :
    un chemin de formage (41) à travers lequel passent une pluralité d'ébauches (11) de matériau déformable à former en ledit article profilé ;
    une pluralité de paires d'éléments de matrice de formage (45, 45') de corps opposés et complémentaires adaptés pour se déplacer le long dudit chemin de formage (41) ; et
    un entraînement (44, 44') qui facilite un déplacement desdits éléments de matrice de formage de corps le long dudit chemin de formage (41) ;
    dans lequel chaque paire d'éléments de matrice de formage (45, 45') de corps est adaptée pour agir sur une ébauche (11) respective de matériau déformable indépendamment pour former un profil souhaité sur chaque ébauche (11) respective ;
    caractérisé en ce que ledit appareil comprend des éléments de positionnement montés entre des éléments de matrice de formage (45, 45') de corps adjacents, lesdits éléments de positionnement étant adaptés pour positionner lesdites ébauches avant la mise en prise desdites ébauches (11) avec lesdits éléments de matrice de formage (45, 45') de corps adjacents.
  2. Appareil (40) selon la revendication 1, dans lequel des éléments de matrice de formage de corps voisins de ladite pluralité de paires d'éléments de matrice de formage (45, 45') de corps s'articulent les uns aux autres (48).
  3. Appareil selon la revendication 1, dans lequel lesdits éléments de positionnement comprennent des broches de positionnement (75).
  4. Appareil (40) selon la revendication 1, dans lequel une section supérieure dudit chemin de formage (41) comprend des espaces (47) entre des éléments de matrice de formage (45, 45') de corps adjacents, lesdits espaces (47) coopérant avec et recevant des éléments de positionnement (75) respectifs lors de l'utilisation.
  5. Appareil (40) selon l'une quelconque des revendications précédentes, dans lequel chacun de ladite paire d'éléments de matrice de formage (45, 45') de corps est adapté pour former ladite ébauche (11) de matériau déformable en ledit article profilé (46) en un seul passage le long dudit chemin de formage (41).
  6. Appareil (40) selon l'une quelconque des revendications 1 à 4, dans lequel chacun de ladite paire d'éléments de matrice de formage (45, 45') de corps est adapté pour former ladite ébauche (11) de matériau déformable en un intermédiaire profilé en un seul passage le long dudit chemin de formage (41), ledit appareil (40) comprenant au moins une paire supplémentaire d'éléments de matrice de formage (45, 45') de corps adaptés pour agir indépendamment sur ledit intermédiaire profilé en au moins un passage supplémentaire le long dudit chemin de formage (41), ou le long d'un chemin de formage supplémentaire dudit appareil, pour former ledit article profilé (46).
  7. Appareil (40) selon la revendication 6, dans lequel ledit appareil (40) comprend au moins un chemin de formage supplémentaire le long duquel se déplace une paire respective de ladite au moins une paire supplémentaire d'éléments de matrice de formage (45, 45') de corps.
  8. Appareil (40) selon l'une quelconque des revendications précédentes, comprenant des première (42) et deuxième (43) montures qui définissent ledit chemin de formage (41) entre elles et sur lesquelles sont montés des premier et deuxième éléments de matrice de formage de corps de ladite paire d'éléments de matrice de formage (45, 45') de corps, dans lequel lesdites première et deuxième montures (42, 43) comprennent des dents d'entraînement (44, 44') qui entrent en prise avec lesdits premier et deuxième éléments de matrice de formage (45, 45') de corps et qui sont entraînées par ledit entraînement (44, 44').
  9. Appareil (40) selon la revendication 8, dans lequel lesdites première et deuxième montures (42, 43) définissent des premier et second chemins sans fin le long desquels un premier jeu de premiers éléments de matrice de formage (45, 45') de corps et un deuxième jeu de deuxièmes éléments de matrice de formage (45, 45') de corps se déplacent respectivement.
  10. Appareil (40) selon la revendication 8 ou 9, dans lequel chacune des première et deuxième montures (42, 43) comprend une surface à grand rayon à travers ledit chemin de formage (41), ou dans lequel l'une des première et deuxième montures (42, 43) comprend une surface à grand rayon à travers ledit chemin de formage (41) et l'autre desdites première et deuxième montures (42, 43) comprend une surface sensiblement plate à travers ledit chemin de formage (41).
  11. Procédé (10) de formation d'un article profilé (12) comprenant :
    le passage d'une pluralité d'ébauches (11) de matériau déformable à former en ledit article profilé (12) à travers un chemin de formage (41) comprenant une pluralité de paires d'éléments de matrice de formage (45, 45') de corps opposés et complémentaires adaptés pour se déplacer le long dudit chemin de formage (41) ; et
    la mise en prise progressive d'une ébauche (11) respective de ladite pluralité d'ébauches avec une paire respective d'éléments de matrice de formage (45, 45') de corps opposés et complémentaires pour former indépendamment un profil souhaité sur chaque ébauche (11) respective ;
    caractérisé en ce que ledit procédé (10) comprend en outre le positionnement desdites ébauches avant la mise en prise desdites ébauches (11) avec lesdits éléments de matrice de formage (45, 45') de corps, ledit positionnement étant réalisé avec des éléments de positionnement montés entre des éléments de matrice de formage de corps adjacents (13).
  12. Procédé (10) selon la revendication 11, dans lequel lesdits éléments de positionnement comprennent des broches de positionnement (75).
  13. Procédé (10) selon la revendication 11 ou 12, dans lequel :
    lesdites paires d'éléments de matrice de formage (45, 45') de corps forment lesdites ébauches (11) de matériau déformable en ledit article profilé (12) en un seul passage le long dudit chemin de formage (41) ; ou
    lesdites paires d'éléments de matrice de formage (45, 45') de corps forment lesdites ébauches (11) de matériau déformable en intermédiaires profilés en un seul passage le long dudit chemin de formage (41), ledit procédé (10) comprenant en outre :
    le passage desdits intermédiaires profilés à travers au moins un chemin de formage (41) supplémentaire comprenant une au moins une paire supplémentaire respective d'éléments de matrice de formage (45, 45') de corps opposés et complémentaires adaptés pour se déplacer le long dudit au moins un chemin de formage (41) supplémentaire respectif ; et
    la mise en prise progressive desdits intermédiaires profilés avec ladite au moins une paire supplémentaire d'éléments de matrice de formage (45, 45') de corps,
    dans lequel ladite au moins une paire supplémentaire d'éléments de matrice de formage (45, 45') de corps agit indépendamment sur lesdits intermédiaires profilés en au moins un passage supplémentaire le long dudit au moins un chemin de formage (41) supplémentaire pour former ledit article profilé (12).
EP15755660.6A 2014-02-25 2015-02-24 Procédé et appareil de formage d'articles profilés Active EP3110619B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2014900602A AU2014900602A0 (en) 2014-02-25 Method and apparatus for forming profiled articles
PCT/AU2015/050071 WO2015127509A1 (fr) 2014-02-25 2015-02-24 Procédé et appareil de formage d'articles profilés

Publications (3)

Publication Number Publication Date
EP3110619A1 EP3110619A1 (fr) 2017-01-04
EP3110619A4 EP3110619A4 (fr) 2017-10-18
EP3110619B1 true EP3110619B1 (fr) 2019-04-10

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EP15755660.6A Active EP3110619B1 (fr) 2014-02-25 2015-02-24 Procédé et appareil de formage d'articles profilés

Country Status (6)

Country Link
US (1) US20170066031A1 (fr)
EP (1) EP3110619B1 (fr)
JP (1) JP6502391B2 (fr)
CN (1) CN106103071B (fr)
AU (1) AU2015222693B2 (fr)
WO (1) WO2015127509A1 (fr)

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JP5565168B2 (ja) * 2010-07-26 2014-08-06 住友電装株式会社 異型コルゲートチューブ製造装置及び異型コルゲートチューブ製造方法
JP2012166222A (ja) * 2011-02-14 2012-09-06 Toyota Boshoku Corp プレス装置

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EP3110619A4 (fr) 2017-10-18
AU2015222693B2 (en) 2019-12-05
EP3110619A1 (fr) 2017-01-04
CN106103071A (zh) 2016-11-09
JP6502391B2 (ja) 2019-04-17
AU2015222693A1 (en) 2016-08-18
CN106103071B (zh) 2018-08-24
US20170066031A1 (en) 2017-03-09
WO2015127509A1 (fr) 2015-09-03

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