EP4117835B1 - Outil et procédé de changement de cylindre de travail dans laminoir - Google Patents

Outil et procédé de changement de cylindre de travail dans laminoir Download PDF

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Publication number
EP4117835B1
EP4117835B1 EP21717140.4A EP21717140A EP4117835B1 EP 4117835 B1 EP4117835 B1 EP 4117835B1 EP 21717140 A EP21717140 A EP 21717140A EP 4117835 B1 EP4117835 B1 EP 4117835B1
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EP
European Patent Office
Prior art keywords
work roll
metal strip
branches
roll
rolling members
Prior art date
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Active
Application number
EP21717140.4A
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German (de)
English (en)
French (fr)
Other versions
EP4117835C0 (fr
EP4117835A1 (fr
Inventor
Conrad ERNST DE LA GRAETE
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.)
Fives DMS SA
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Fives DMS SA
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Application granted granted Critical
Publication of EP4117835C0 publication Critical patent/EP4117835C0/fr
Publication of EP4117835B1 publication Critical patent/EP4117835B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/103—Manipulators or carriages therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/106—Vertical displacement of rolls or roll chocks during horizontal roll changing

Definitions

  • the invention relates to a method for changing the working rolls of a rolling mill in the presence of a metal strip intended to be rolled between the two working rolls, including an upper working roll and a lower working roll. suitable for extracting work rolls from the rolling mill stand.
  • the invention also relates to a method for changing the working rolls of a rolling mill in the presence of a metal strip intended to be rolled between the two working rolls, including an upper working roll and a lower working roll, suitable for the insertion and installation of lower or upper work cylinders, in particular new or ground.
  • a method according to the preamble of claims 1 and 12 is known from the document EP 0 684 089 A2 .
  • the present disclosure also relates to a work roll change tool configured for the implementation of the method suitable for the extraction of work rolls and/or for the insertion and placement in the stand of the rolling mill of rolls of working, inferior and/or superior, in particular new or rectified.
  • a cart equipped with a fork system comprising two branches, the branches being movable relative to the support of the fork system is known from the document US 2019/337781 A1 .
  • the present invention thus finds an advantageous application for multi-roll rolling mills, such rolling mills typically being “Sendzimir” rolling mills.
  • Cold rolling makes it possible to obtain the final thickness of a metal strip by successive passages of this strip between cylinders in the presence of high forces simultaneously in pressure and traction.
  • a “Sendzimir” type rolling mill comprises a plurality of cylinders, or rollers, which are arranged relative to each other to allow the mechanical characteristics of a metal strip to change and obtain a strip thickness which can be less than 3 millimeters .
  • a “Sendzimir” rolling mill which can have twenty cylinders; an example of production of such a rolling mill with twenty cylinders is illustrated in the documents US 5,193,377 And US 5,471,859 .
  • FIG. 12 represents a schematic view of a cross section of a twenty-roll rolling mill.
  • the cylinders are divided into a lower group GI and an upper group Gs; more precisely, these groups GI and Gs have a symmetrical structure and each comprise ten cylinders including: a working cylinder 12, two first intermediate cylinders 13, three second intermediate cylinders 14 and 15, and four support cylinders, or rollers support, which are outside the arrangement and which are noted A, B, C and D for the upper group GS and E, F, G, H for the lower group GI.
  • the present disclosure thus finds a particular application for changing the working rolls of a cold rolling mill, typically used to carry out bright annealing.
  • the work rolls have a surface condition with very low roughness, called mirror polish.
  • robotic systems are known from the state of the art, such as a multi-axis arm provided with a gripper configured to ensure the removal of rolls from a rolling mill.
  • These robotic systems make it possible to change the rolls of the rolling mill while limiting the risk of injury for the operators, and in comparison to the change methods with hoist, requiring the physical presence of an operator near the working roll being handled, to carry out the extraction of the cylinder and its replacement with a new or rectified cylinder.
  • This disclosure improves the situation.
  • a mobile support connected by a second actuator to the fork support is configured to ensure blocking of the end of the working cylinder gripped and pulled by the gripping device, pinched between the mobile support and a counter -support in the vicinity of the fork support, when the branches are in a close position.
  • the present disclosure relates first of all to a method for changing the working rolls 12 of a rolling mill marked 10, in the presence of a metal strip BM intended to be rolled between the two working rolls 12, including a roll upper working cylinder, and a lower working cylinder.
  • the working rolls 12 each have a contact generator with the metal strip, the contact generators and the axes of the working cylinders 12 being in a plane substantially perpendicular to a direction of travel of the metal strip.
  • rolling members such as first intermediate cylinders 13 are in contact along two contact generators between each of the working cylinders 12 and the rolling members, the rolling members ensuring the transmission of a rolling force to the working rolls 12, lower and upper, in contact with the metal strip BM.
  • the method comprises an insertion step a), prior to the withdrawal step b), with robotic insertion of the mechanical separation means guaranteeing the elimination of contact between the working cylinder 12 and the strip metal BM, in the separation position PS1, and alternatively or preferably additionally, with a robotic insertion of mechanical separation means guaranteeing the elimination of contact between the working cylinder 12 and the rolling members, in the separation position PS2.
  • the withdrawal step b) is then implemented while said mechanical separation means are in said separation position PS1 in which the working cylinder 12 and the metal strip BM are physically separated or/and preferably in said position of separation PS2 in which the working cylinder 12 and the support members are physically separated.
  • the method according to the present disclosure advantageously makes it possible, during the removal step b) to avoid any friction between the working cylinder, on the one hand, and the metal strip and/or the rolling members, during the movement of the working roll for its removal from the rolling mill stand.
  • the process according to the present disclosure finds a particular application in a 20Hi rolling mill as shown schematically in the Figure 12 .
  • the method according to the present disclosure can be advantageously implemented by a cylinder changing tool 8, comprising a fork system, with two branches 20, 21.
  • a cylinder changing tool 8 comprising a fork system, with two branches 20, 21.
  • the insertion step a) and the extraction step b) can be implemented for the upper working cylinder 12, and as visible from the figures 5 to 9 , the separation means 1 between said upper working cylinder 12 and the metal strip BM comprising said fork system 2 with its two branches 20, 21, parallel to each other, held to the same fork support 22.
  • the two branches 20, 21 of the fork system are movable relative to said fork support, to take, on the one hand, a spaced position PE, visible at the Figure 6 , configured to ensure the insertion of the two branches 20, 21 of the fork system, on either side of the upper working cylinder, without friction with said upper working cylinder 12, then always in contact by the contact generator with the metal strip, and on the other hand a close position PR, visible at the figure 7 in which the two branches of the fork system are brought closer to each other.
  • a spaced position PE visible at the Figure 6
  • a close position PR visible at the figure 7 in which the two branches of the fork system are brought closer to each other.
  • the two branches are advantageously configured so as to come into contact respectively with two generators of the upper working cylinder 12 to separate the upper working cylinder from the metal strip BM by lifting it, thus eliminating the contact between the upper working cylinder with the metal strip, and as visible at the Figure 7 .
  • the two branches 20, 21 of the fork system 2 can advantageously have a section, following a plane perpendicular to the direction of the branches 20, 21, comprising two slopes 25, 26, belonging respectively to the two branches 20, 21 facing each other, inclined relative to the plane of the metal strip BM following the direction of travel of the metal strip.
  • the two slopes 25, 26 are configured to come into contact with two generators of the upper working cylinder 12 to ensure the lifting of the upper working cylinder, forming a cradle for maintaining the upper working cylinder 12, in the close position PR of the branches 20, 21 of the fork system 2.
  • the branches 20, 21 of the fork system can have a metal body machined to form the slopes 25, 26.
  • a protective coating for example plastic, or Teflon can cover the metal body at least at the level of the slopes. 25, 26 intended to come into contact with the working cylinder 12.
  • Such a coating makes it possible to protect the surface condition of the working cylinder when it is caused to roll or slide on the slopes 25, 26 of the branches, and thus avoiding marking/scratching of the work cylinder.
  • the two branches 20 and 21 of the fork system are provided respectively with a first wing 3, and with a second wing 4.
  • the first wing 3 extends longitudinally to the branch 20, and is articulated along a pivot axis 30 to said branch 20 and the second wing 4 extends longitudinally to the branch 21, and is articulated along a pivot axis 40 to the other branch 21.
  • the two wings 3 and 4 extend, following a section perpendicular to the direction of the branches of the fork system, from their pivot axis 30 or 40, one towards the other, each being inclined relative to to the plane passing through the axes of two branches, at an angle allowing the introduction of a free edge 31, or 41 of each of the wings 3 or 4 between the working cylinder and the corresponding rolling members, namely the one and the other of the first intermediate rolls in the case of a 20Hi rolling mill.
  • the insertion step a) and the extraction step b) are implemented for the lower working cylinder, and in which said separation means between said working cylinder and the metal strip comprise the fork system 2 comprising the two branches 20, 21 parallel to each other, held to the same fork support 22 and in which the two branches of said fork system have free ends 23, advantageously provided with slopes 24 .
  • slopes 24 are particularly visible at figures 3 and 4 and are inclined relative to the plane of the metal strip BM, in the direction perpendicular to the direction of travel of the metal strip, when the two branches 20, 21 of the fork system have axes contained in a plane parallel to the plane of the BM metal strip.
  • these slopes 24 are advantageously configured to cooperate with the edge of the metal strip BM in order to lift the metal strip during the insertion of the branches 20, 21 following a movement parallel to the direction of the lower working cylinder, causing the spacing of the metal strip BM from the lower working cylinder 12 and therefore the elimination of contact between the lower working cylinder 12 and the metal strip BM.
  • the two branches can be inserted directly into their close position PR when the working cylinder changing tool does not have wings 3, 4 with insert function. Otherwise and when the two branches 20, 21 are provided with said wings 3 and 4, said branches 20, 21 are inserted during the insertion step a), in their spaced position PE between the metal strip BM, and the cylinder of work 12 lower, and as visible at the Figure 10 .
  • the wings 3, 4 with insert function can be made of a plastic material, or similar, at least at the level of its surfaces intended to come into contact with the working cylinder and the rolling members, in particular the first intermediate cylinders.
  • the gripping of the end of the working cylinder during the withdrawal step b) is implemented by a gripping device 5 configured to grip the end of the working cylinder comprising a gripper 50 with an electromagnetic suction cup, or else a pneumatic suction cup cooperating with a base of the cylinder, or else presenting a clamp whose jaws engage with the periphery cylindrical from the end of the cylinder.
  • the withdrawal step b) is implemented by moving the gripper 50 of the gripping device 5 in the direction of the working cylinder so as to ensure traction of the working cylinder 12.
  • the gripping device 5 comprises said gripper 50, but also an actuator 51 connecting the fork support 22 to the gripper 50, configured to move the gripper 50 relative to the fork support 22, following a direction parallel to the branches of the fork system.
  • the gripping device comprises a gripper 50, in particular an electromagnetic suction cup, and the actuator comprises a rack 52.
  • This rack 52 supports the gripper 50, at one of its ends.
  • a motor, 53 secured to the fork support 22, includes a pinion (not visible because it is interior) which meshes with the teeth of the rack.
  • the motorized drive of the pinion in one direction of rotation makes it possible to pull the gripper 50, following the direction of the branches 20, 21 of the fork system 2.
  • the motorized drive of the pinion in the opposite direction makes it possible to push the working cylinder in the rolling mill stand, when inserting a new or ground work roll.
  • a movable support 6 connected by a second actuator 60 to the fork support 22 is configured to ensure the blocking of the end of the working cylinder gripped and towed by the gripping device 5, the cylinder being blocked, pinched between the movable support 6 and a counter-support 7 in the vicinity of the fork support, when the branches are in the close position PR.
  • Such blocking makes it possible to completely remove the working cylinder 12 by moving the fork system assembly and the working cylinder blocked between the movable support 6 and the counter-support 7, in particular when the working cylinder is the upper working cylinder which then held by gravity against the branches 20, 21 during withdrawal, or when the working cylinder is a lower working cylinder then positioned under the branches 20, 21 of the fork system.
  • the fork system 2 comprising in addition to said gripper 50, the actuator 51 connecting the support of the fork system to the gripper and the support 6 connected to the support by said second actuator 60 is a self-supporting assembly forming the same tool 8 for changing the working cylinder, manipulated by robotic means Ro.
  • the robotic means Ro comprising a motorized carriage, movable along Rai rails oriented in the x direction.
  • the change tool 8 is oriented during the insertion step a) (or the withdrawal step), in the axis of the working cylinder 12 to be gripped, the parallel branches 20, 21, substantially contained in a plane parallel to the plane of the metal strip BM, oriented parallel to the axis of the working cylinder to be gripped.
  • the gripping device For gripping the upper working cylinder 12, the gripping device is positioned above the branches 20, 21 and while for gripping the lower working cylinder, the two branches are located above the gripping device 5.
  • the working cylinder changing tool 8 is mounted on a support S mounted movable in a motorized manner along a column C carried by the carriage of the robotic means.
  • the vertical movement when raising (or lowering) the support S along the column C allows the height of the tool to be adjusted.
  • the inclination of the longitudinal axis of the changing tool parallel to the axis of the branches can be adjusted by a pivot P between the tool 8 and the support S via a motorization. Another degree of freedom in pivoting allows the tool to be rotated change tool 8 around its longitudinal axis, and in order to allow the change tool to be turned over by 180°.
  • robotic means can take many other forms such as for example a six-axis robotic arm, manipulating the working cylinder changing tool 8.
  • the process according to the present disclosure finds a particular application in a 20Hi rolling mill as shown schematically in the Figure 12 .
  • the present disclosure also concerns such a tool 8 suitable for changing work cylinders configured to be manipulated by motorized means Ro.
  • This tool 8 comprises the fork system 2 comprising two branches 20, 21 configured to be inserted into the stand of a rolling mill in a spaced position PE from the branches, on either side of an upper working cylinder 12 of the rolling mill , said branches 20, 21 being movable relative to a fork support 22, said branches 20, 21 being configured to pass from their spaced position PE up to a close position PR in which the branches 20, 21 ensure the lifting of the upper working cylinder 12 by guaranteeing the physical separation between the working cylinder 12 and the metal strip BM during extraction of a working cylinder.
  • the tool further comprises the gripping device 5 comprising the gripper 50 connected by an actuator 51 to the fork support, configured to grip one end of the working cylinder 12 and pull the working cylinder 12 along the branches 20, 21 of the system fork
  • the tool 8 for changing the working cylinder can also include the movable support 6 connected by a second actuator 60 to the fork support 22 configured to ensure blocking of the end of the working cylinder gripped and pulled by the gripping device 5, pinched between the movable support 6 and a counter-support 7 in the vicinity of the fork support, when the branches 20, 21 are in the close position PR.
  • this work roll changing tool is suitable not only for extracting the work roll, but also for gripping and inserting a new or ground work roll into the rolling mill as a replacement. of the upper working cylinder.
  • the new or rectified working cylinder is jointly inserted, blocked along the two branches 20, 21 of the fork system then in the close position PR, which allows the new working cylinder 12 to be inserted. or ground, without risk of marking with the metal strip BM, or even without risk of marking with the rolling members, in particular the first two intermediate cylinders 13 when the tool also includes the wings 3 and 4 with insert function .
  • Said branches 20, 21 are movable relative to a fork support 22, configured to move from their close position PR to their spaced position PE to cause the removal of the working cylinder 12, upper on the metal strip BM. This causes a controlled removal of the upper working cylinder 12, without falling, and in particular thanks to the slopes 25, 26 of the branches, which ensure a gentle descent of the working cylinder when the branches 20, 21 are separated.
  • Wings 3 and 4 with insert function are thus of interest when extracting the work cylinder; the two wings are inserted between the working cylinder 12, lower or upper, and the rolling members, in particular the two first intermediate cylinders 13, any marking of the working cylinder and the first two intermediate cylinders during movement is advantageously avoided of the working roll, whether by the gripping device, or by the movement caused by the robotic means when the working roll is completely extracted from the rolling mill stand.
  • the new or rectified cylinder is placed on the rolling members, in particular the first intermediate cylinders, by moving the branches from their close position visible at the Figure 11 up to their separated position, which leads to the withdrawal of the wings 3, 4, respectively between the working cylinder, and the first two intermediate cylinders, and as visible in the Figure 10 .
  • Such a tool thus advantageously makes it possible not only to extract the working cylinders without risk of marking the working cylinder, but also to insert a new or ground working cylinder, in particular mirror polished, and advantageously without risk of marking the new or rectified working cylinder, which is a great advantage.
  • the present disclosure also relates to a process for changing the working cylinder suitable for ensuring the insertion of a working roll in the rolling mill stand, in the presence of the metal strip and the rolling members.
  • this process is advantageous in that it eliminates or even greatly limits the risk of friction of the working cylinder, new or rectified, and therefore of scratching of the working cylinder.
  • the method comprises an insertion step c), prior to or combined with the insertion step d), with robotic insertion of the mechanical separation means guaranteeing the elimination of contact between the working cylinder 12 and the metal strip BM, in the separation position PS1, and alternatively or preferably additionally, with a robotic insertion of mechanical separation means guaranteeing the elimination of contact between the working cylinder 12 and the rolling members, in the position separation PS2.
  • the step of inserting d) of the working cylinder is then implemented while said mechanical separation means are in said separation position PS1 in which the working cylinder 12 and the metal strip BM are physically separated or/and from preferably in said separation position PS2 in which the working cylinder 12 and the support members are physically separated.
  • the method according to the present disclosure advantageously makes it possible, during the insertion step d) to avoid any friction between the working cylinder, to be inserted new, or rectified, on the one hand, and the metal strip and/or the rolling members, when moving the working roll for its insertion into the rolling mill stand.
  • the method can present the insertion step c) comprising the robotic insertion of the mechanical separation means between said working cylinder 12 to be inserted, upper or lower, and the metal strip BM up to the separation position PS1 in which the metal strip BM and said upper or lower working cylinder 12 are physically separated along the length of the working cylinder, guaranteeing elimination of contact between the working cylinder and the metal strip, and the insertion in which one carries out said insertion of the working cylinder in a robotic manner, by moving said working cylinder 12 along its axis relative to the metal strip and the rolling members, in said separation position PS1 in which the working cylinder 12, upper or lower and the metal strip BM are physically separated so as to avoid any friction between the working cylinder and the metal strip during movement.
  • the method according to the present disclosure can be advantageously implemented by a tool 8 for changing the cylinder in particular as previously described for extraction, comprising a fork system, with two branches 20, 21.
  • a tool 8 for changing the cylinder in particular as previously described for extraction comprising a fork system, with two branches 20, 21.
  • the insertion step c) and the insertion step d) can be implemented for the upper working cylinder 12, and by inversion of the steps described for the extraction and as visible from the figures 5 to 9 , the separation means 1 between said upper working cylinder 12 and the metal strip BM comprising said fork system 2 with its two branches 20, 21, parallel to each other, held to the same fork support 22.
  • Said separation means 1 between said upper working cylinder 12 and the metal strip BM may comprise a fork system 2 comprising two parallel branches 20, 21 between them, held at the same fork support 22.
  • the two branches of the fork system are movable relative to said fork support, to take, on the one hand, during the insertion step c) and the step insertion d) a close position PR in which the two branches of the fork system are brought closer to each other, configured so as to come into contact respectively with two generators of the upper working cylinder 12 to separate the cylinder from upper working of the metal strip BM, then on the other hand, a spaced position PE, configured to ensure the removal of the upper working cylinder 12 on the metal strip with the presence of a contact generator between the upper working cylinder and the metal strip, the two branches then placed on either side of the upper working cylinder.
  • the two branches 20, 21 of the fork system 2 can have the section, following a plane perpendicular to the direction of the branches 20, 21, comprising two slopes 25, 26, belonging respectively to the two branches 20, 21 facing each other, inclined relative to the plane of the metal strip BM following the direction of travel of the metal strip, the two slopes 25, 26 being configured to come into contact with two generators of the upper working cylinder 12 to ensure maintaining the upper work, by forming a cradle for maintaining the upper working cylinder 12, in the close position PR of the branches 20, 21 of the fork system 2, then a controlled removal of the upper working cylinder on the metal strip, thanks to slopes 25, 26 when the two branches are moved to their spaced position PE.
  • the insertion step c) and the insertion step d) can be implemented for the lower working cylinder, and in which said mechanical separation means between said cylinder working and the metal strip comprise a fork system 2 comprising two branches 20, 21, parallel to each other, held to the same fork support 22 and in which the two branches of said fork system have free ends 23, provided with slopes 24 , which when the two branches 20, 21 of the fork system have axes contained in a plane parallel to the plane of the metal strip BM, are inclined relative to the plane of the metal strip BM, in the direction perpendicular to the direction of travel metal strip.
  • said mechanical separation means between said cylinder working and the metal strip comprise a fork system 2 comprising two branches 20, 21, parallel to each other, held to the same fork support 22 and in which the two branches of said fork system have free ends 23, provided with slopes 24 , which when the two branches 20, 21 of the fork system have axes contained in a plane parallel to the plane of the metal strip BM, are inclined relative to the plane of the metal strip
  • the slopes 24 at the ends of the branches 21 are configured to cooperate with the edge of the metal strip BM to lift the metal strip during the insertion of the branches 20, 21 following a movement parallel to the direction of the lower working cylinder, with spacing of the metal strip BM of the lower working cylinder 12.
  • the insertion of the branches of the fork system, with the slopes 24 at the ends of branches 20, 21 makes it possible to lift the metal strip BM, and to provide the two branches 20, 21 as a mechanical separation preventing any friction between the working cylinder lower and the metal strip when it is inserted.
  • the lifting of the metal strip, by the work of the slopes 24, can be carried out in the close position PR of the branches 20, 21 of the fork system, or even in conjunction with the insertion of the lower working cylinder then positioned just below the branches 20, 21 of the fork system during the insertion step d), and like the work of the slopes during the extraction of the working cylinder ( figures 13 And 14 ).
  • the method not only makes it possible to avoid friction between the working cylinder 12 to be inserted (upper or lower) and the metal strip BM, but also to avoid friction between said working cylinder (lower or upper) and the rolling members, in particular between the upper working cylinder 12 and the first upper intermediate cylinders 13, or even between the lower working cylinder 12 and the first lower intermediate cylinders 13.
  • the separation means between said working cylinder and the metal strip may comprise said fork system 2, including the two branches 20, 21, movable one relative to the another to move from a close position PR in which the two branches 20, 21 of the fork system are interposed between said upper working cylinder 12 or lower, and the metal strip BM guaranteeing the elimination of contact between the working cylinder 12 and the metal strip BM during the insertion step c) and the insertion step d) and in which the separation means mechanics between said working cylinder 12 and the rolling members comprise, in addition, two wings 3, 4, with insert function, respectively secured in an articulated manner to said two branches 20, 21 of the fork system and jointly ensuring, in a close position PR the mechanical separation between the working cylinder and the rolling members in which said working cylinder 12 and the rolling members are physically separated along the length of the working cylinder, by said wings 3, 4 in insert, guaranteeing the elimination of contact between the working cylinder 12 and the rolling members during the insertion step c) and the insertion step d).
  • the insertion step c) and the insertion step d) are implemented for the upper working cylinder 12, and in which said separation means 1 between said upper working cylinder 12 and the metal strip BM comprise the fork system 2 comprising two branches 20, 21, parallel to each other, held to the same fork support 22.
  • the two branches of the fork system are movable relative to said fork support, to take, on the one hand, during the insertion step c) and the insertion step d), a close position PR in which the two branches 20, 21 of the fork system are brought closer to each other, configured so as to come into contact respectively with two generators of the upper working cylinder 12 to separate the upper working cylinder from the metal strip BM, the two wings 3.4 jointly ensuring the mechanical separation between the working cylinder 12 and the rolling members, and then on the other hand, a spaced position PE, configured to ensure the removal of the upper working cylinder 12 on the metal strip BM with contact generator between the upper working cylinder 12 and the metal strip. In their spaced position PE the two branches are then arranged on either side of the upper working cylinder, which jointly causes the wings 3, 4 to be retracted into a spaced position where the latter free the inter-spaces between the working cylinder and the rolling members.
  • the pushing of the end of the working cylinder 12 during the insertion step d) is implemented by a gripping device 5 comprising a gripper 50 configured to push the end of the working cylinder and in which the insertion step d) is implemented by a movement of the gripper 50 of the gripping device in the direction of the working cylinder ensuring a thrust of the working cylinder 12.
  • the removal of the upper working cylinder 12 is ensured by the spacing of the branches 20, 21 from their close position PR to their spaced position EP, which also causes the wings 3, 4 to be retracted, with release of the inter-space between the working cylinder, and the rolling members, in particular the first two upper intermediate cylinders 13.
  • the removal of the lower working cylinder 12 is ensured by the spacing of the branches 20, 21, and thus jointly the spacing of the wings 3, 4 in insert up to their spaced position PE for which the working cylinder, 12, lower comes into contact with the rolling members, in particular with the two first intermediate cylinders 13, lower, and according to the two generators of contact between the working cylinder and respectively the two first intermediate cylinders 13, lower.
  • the tool 8 for changing the working cylinder, manipulated by robotic means Ro, as previously described may be suitable for implementing the insertion steps a) and the withdrawal step b) for extraction working cylinders.
  • the tool 8 for changing the working cylinder, manipulated by robotic means Ro, as previously described may still be suitable for implementing the insertion steps c) and the insertion step d) for the insertion of working cylinders, new or ground.
  • the present disclosure makes it possible to avoid degradation of the metal strip, of the rolling members such as the first intermediate rolls, but also of the working roll, not only when extracting the working roll from the rolling mill stand, but even advantageously when inserting a new or ground working cylinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Turning (AREA)
EP21717140.4A 2020-03-10 2021-03-09 Outil et procédé de changement de cylindre de travail dans laminoir Active EP4117835B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2002381A FR3108047B1 (fr) 2020-03-10 2020-03-10 Outil et procédé de changement de cylindre de travail dans laminoir
PCT/FR2021/050394 WO2021181039A1 (fr) 2020-03-10 2021-03-09 Outil et procédé de changement de cylindre de travail dans laminoir

Publications (3)

Publication Number Publication Date
EP4117835A1 EP4117835A1 (fr) 2023-01-18
EP4117835C0 EP4117835C0 (fr) 2024-01-24
EP4117835B1 true EP4117835B1 (fr) 2024-01-24

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EP21717140.4A Active EP4117835B1 (fr) 2020-03-10 2021-03-09 Outil et procédé de changement de cylindre de travail dans laminoir

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US (1) US20230119712A1 (zh)
EP (1) EP4117835B1 (zh)
CN (1) CN115243807A (zh)
ES (1) ES2973090T3 (zh)
FR (1) FR3108047B1 (zh)
WO (1) WO2021181039A1 (zh)

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FR3144530A1 (fr) 2023-01-03 2024-07-05 Fives Dms Outil et procédé de changement de cylindre de travail dans un laminoir
FR3147725A1 (fr) 2023-04-14 2024-10-18 Fives Dms Installation de laminage comprenant un système robotisé configuré pour l’extraction de cylindres d’un laminoir et un magasin de changement d’outils

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019059C2 (de) * 1980-05-19 1985-05-02 Maschinen- Und Werkzeugbau Gmbh, 4600 Dortmund Vorrichtung zum Auswechseln der Arbeitswalzen von Walzgerüsten
JPS59202107A (ja) * 1983-04-28 1984-11-15 Nisshin Steel Co Ltd タンデムクラスタミルにおける走間ワ−クロ−ル交換法
JPH0832336B2 (ja) * 1988-08-15 1996-03-29 三菱重工業株式会社 圧延機のロール組替装置
US5193377A (en) 1991-08-23 1993-03-16 T. Sendzimir, Inc. Crown adjustment systems on cluster mills
US5471859A (en) 1992-07-20 1995-12-05 T. Sendzimir, Inc. Cluster mill crown adjustment system
GB9410408D0 (en) * 1994-05-23 1994-07-13 Davy Mckee Poole Roll change device for cluster mill
JPH10263634A (ja) * 1997-03-26 1998-10-06 Ishikawajima Harima Heavy Ind Co Ltd 多段ミルのロール組替装置
FR2769525B1 (fr) * 1997-10-10 1999-12-31 Kvaerner Metals Clecim Dispositif de changement des cylindres de travail et/ou des cylindres intermediaires d'une cage de laminoir, et ratelier de stockage pour un tel dispositif
DE102016014454A1 (de) * 2016-12-06 2018-06-07 Kaup GmbH & Co. KG Gesellschaft für Maschinenbau Vorrichtung zum Transportieren eines Transportgutes und Verfahren
CN109264637A (zh) * 2018-09-12 2019-01-25 刘道灵 一种用于智能制造车间的无人操作叉车

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Publication number Publication date
EP4117835C0 (fr) 2024-01-24
EP4117835A1 (fr) 2023-01-18
FR3108047B1 (fr) 2022-04-01
ES2973090T3 (es) 2024-06-18
WO2021181039A1 (fr) 2021-09-16
CN115243807A (zh) 2022-10-25
FR3108047A1 (fr) 2021-09-17
US20230119712A1 (en) 2023-04-20

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