EP3241627A1 - Cage à rouleaux pour une ligne de profilage - Google Patents

Cage à rouleaux pour une ligne de profilage Download PDF

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Publication number
EP3241627A1
EP3241627A1 EP17167231.4A EP17167231A EP3241627A1 EP 3241627 A1 EP3241627 A1 EP 3241627A1 EP 17167231 A EP17167231 A EP 17167231A EP 3241627 A1 EP3241627 A1 EP 3241627A1
Authority
EP
European Patent Office
Prior art keywords
roller
motor
cage
line
operating area
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.)
Granted
Application number
EP17167231.4A
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German (de)
English (en)
Other versions
EP3241627B1 (fr
Inventor
Andrea Anesi
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 Oto SpA
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Fives Oto SpA
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Filing date
Publication date
Application filed by Fives Oto SpA filed Critical Fives Oto SpA
Publication of EP3241627A1 publication Critical patent/EP3241627A1/fr
Application granted granted Critical
Publication of EP3241627B1 publication Critical patent/EP3241627B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D5/10—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 for making tubes
    • B21D5/12—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 for making tubes making use of forming-rollers
    • 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
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • 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
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • 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 present invention relates to a roller cage for a profiling line.
  • a profiling line substantially enables the production of longitudinally welded tubes, which are obtained by progressively bending a steel strip around a longitudinal axis, until bringing the longitudinal edges of the strip itself into contact. The longitudinal edges are welded together to obtain a tube. The tube is cut into sections of a pre-established length, according to known procedures. All production is carried out with a continuous process.
  • a profiling line substantially comprises a series of forming assemblies or roller cages, arranged in succession, each of which comprises at least two profiling rollers.
  • the roller cages are configured to progressively bend the steel strip around a longitudinal axis, until lending it a tubular shape.
  • the steel sheet is bent by passing the sheet itself between the rollers of the various cages, which, by contact, progressively deform the sheet.
  • the strip slides continuously through the roller cages, becoming progressively deformed.
  • the roller cages available on the market according to the ordinary technology have two uprights or shoulders, with which the rollers of the cage are associated.
  • the rollers of the cage are substantially positioned in the space comprised between the two shoulders.
  • the cage motor assembly Positioned at one side of the cage, i.e. next to one of the two shoulders, is the cage motor assembly, comprising one or two motors, one or two reduction gearboxes and one or two Cardan joints for driving, in rotation, at least two rollers of the cage.
  • the shoulder on the motor assembly side is normally fixed.
  • the other shoulder of the cage positioned on the opposite side of the motor assembly (operator side), is by contrast removable, both to enable access to the rollers and other components of the cage and allow them to be changed in the event of maintenance or in the event of a changeover in size of the product to be made.
  • In order to change the equipment of the cage it is necessary to remove the mobile shoulder, take out the equipment to be replaced and install the equipment intended for the new production.
  • quick changeover methods have been developed which involve the replacement, off line, of entire plates complete with cages. In this manner, an equipment changeover can take place off line during production downtimes.
  • roller cages available on the market according to the ordinary technology have several drawbacks.
  • a further drawback is represented by the danger of handling the cages mounted on the plate - which can reach an overall weight of 15-20 tonnes - with the use of overhead travelling cranes.
  • present-day technology envisages for each cage, in the simplest case, a transmission of power to the drive rollers by means of flanges, Cardan shafts, one divider per cage, speed change gearbox and an electric motor.
  • a section of the line for calibrating the profile, provided with four cages requires an electric motor, reduction gearbox, speed change gearbox, four dividers (splitters) (for distributing power to the four cages) and eight Cardan shafts (two per cage) with respective coupling flanges.
  • more advanced solutions envisage one electric motor per cage, one divider with gearbox per cage, and two shafts with respective coupling flanges per cage or even one reduction gearbox, with or without speed change, and one motor per individual axis.
  • the object of the present invention is to offer a roller cage for a profiling line which makes it possible to overcome the drawbacks of the roller cages available on the market according to the ordinary technology.
  • roller cage according to the present invention is that of being much more compact than the cages available on the market according to the ordinary technology.
  • roller cage according to the present invention is that of considerably facilitating access to the shaped rollers, as well as all maintenance and/or replacement operations.
  • a further advantage of the roller cage according to the present invention is that of not requiring the use of reduction gearboxes or transmission members, which enables considerable cost savings and a substantial reduction in power losses.
  • a profiling line ( figure 4 ) comprises a plurality of roller cages (G), arranged in succession along a longitudinal direction (Y), which is also the feed direction of the profile (P) being machined.
  • roller cages are configured to progressively bend the starting steel strip around the longitudinal axis (Y), until lending it a tubular shape.
  • the starting strip is bent by passing the strip itself between the rollers of the various cages which, by contact, progressively produce the deformation thereof. In other words, the strip slides continuously through the roller cages, becoming progressively deformed.
  • a welding device (W), which joins the abutting longitudinal edges of the starting strip.
  • the roller cage according to the present invention comprises a support frame (F1) that entirely delimits a non-operating area (A1) which is external to the line, that is, an area in which the profile does not pass and no machining is performed on the profile.
  • the support frame (F1) comprises, for example, two shoulders (S1,S2), or two weight-bearing structures that extend substantially in a vertical plane.
  • the shoulders (S1,S2) are associated at the bottom with a base (D) and at the top with a cross-member structure (T).
  • the support frame (F1) defines a rigid box-like structure that delimits the non-operating area (A1).
  • the cage comprises a motor (11) associated with the frame (F1) and provided with a spindle (12) protruding externally of the non-operating area (A1).
  • the spindle (12) protrudes from the motor (11) in cantilever fashion, that is, it is supported solely by the motor (11), and has a free end that is not supported by other structural parts.
  • a shaped roller (13) is mounted directly on the spindle (12) and arranged inside an operating area (B) of the line, i.e. the area in which the profile passes in order to undergo machining by the shaped roller (13).
  • the operating area (B) is located substantially at the side of the frame (F1) and of the non-operating area (A1).
  • the shaped roller (13) is cantilevered or protrudes from the outside of the support frame (F1). Furthermore, the shaped roller (13) has a free outer end (13a) facing the outside, in the operator's view, without obstacles or other front parts.
  • the shaped roller (13) is external to the frame (F1); in particular, it is on the outer side of the shoulder (S1), located on the side of the operating area (B), i.e. it is on the side of the shoulder (S1) that is not facing the other shoulder (S2). It is thus wholly evident that the shaped roller (13) can be accessed with considerable ease in case of need, for example for maintenance operations or disassembly and replacement operations.
  • the cage according to the invention can be provided with a second motor (21) provided with a spindle (22) protruding externally of the operating area (A1).
  • a second shaped roller (23) can be mounted directly on the spindle (22) of the second motor (21).
  • the second shaped roller (23) is also arranged inside the operating area (B) of the line.
  • the two shaped rollers (13,23) can be arranged in a vertically opposed position, as shown in figure 1 , or they can be offset from each other.
  • the second shaped roller (23) has a free outer end (23a) facing the outside, in the operator's view, without obstacles or other front parts.
  • the second shaped roller (23), too, is in fact external to the frame (F1); in particular, it is on the outer side of the shoulder (S1), located on the side of the operating area (B), i.e. it is on the side of the shoulder (S1) that is not facing the other shoulder (S2).
  • the direct coupling of the second shaped roller (23) to its spindle (22) makes it possible to avoid the use of reduction gearboxes and other transmission members, with the advantages already described previously, without increasing the overall area occupied by the cage.
  • the spindles (12,22) of the two motors (11,21) are substantially parallel to each other. Furthermore, the rotation axes of the two spindles (12,22) lie in the same vertical plane.
  • the motors (11,21), too, are substantially parallel to each other, thus enabling the overall dimensions to be reduced. This does not preclude that, given particular constructive or positioning requirements, the two motors and the two spindles may be arranged differently from what is illustrated in figure 1 ; for example, they could be inclined.
  • figure 1 shows two shaped rollers (12,22) which define overall, on a vertical sectional plane perpendicular to the longitudinal direction (Y), an outline (C1) which surrounds the section of the profile in the same vertical plane.
  • the outline is circular in shape.
  • the cage comprises a second support frame (F2), which entirely delimits a non-operating area (A2) which is external to the line.
  • the cage further comprises two additional motors (31,41), associated with the second frame (F2), provided with a respective spindle (32,42) protruding externally of the non-operating area (A2).
  • the spindles (32,42), too, are supported solely by the respective motor, and have a free end.
  • a shaped roller (33,43) is mounted directly on each spindle (32,42), so as to be located inside the operating area (B) of the line.
  • the shaped rollers (33,43) are located outside the second frame (F2); in particular they are on the outer side of the shoulder (S1), located on the side of the operating area (B), i.e. they are on the side of the shoulder (S1) that is not facing the other shoulder (S2).
  • the spindles (32,42) of the two motors (31,41) are substantially parallel to each other.
  • the rotation axes of the two spindles (32,42) lie in the same vertical plane.
  • the motors (31,41), too, are substantially parallel to each other. This does not preclude that, given particular constructive requirements and/or requirements related to the forming or positioning process, the two motors and the two spindles may be arranged differently from what is illustrated in figure 3 .
  • the shaped rollers (33,43) protruding from the second frame (F2) can be placed in a position that is horizontally opposed to a respective shaped roller (13,23) protruding from the first frame (F1).
  • two upper shaped rollers (13,33) can be aligned along a same horizontal rotation axis.
  • Two lower shaped rollers (23,43) can be aligned along a same horizontal rotation axis.
  • the shaped rollers (13,23,33,43) can also be offset from each other, that is, they can be arranged with rotation axes that are not aligned with each other.
  • the arrangement of the shaped rollers shown in figure 3 serves to define, in a vertical sectional plane perpendicular to the longitudinal direction (Y), an open outline (C2), with a concavity facing upward.
  • two upper shaped rollers (13,33) have an outer convex surface, tangent to the concave side of the outline (C2).
  • Two lower shaped rollers (23,43) have an outer concave surface, tangent to the convex side of the outline (C2).
  • each shaped roller (13,23,33,43) is positioned in cantilever fashion relative to their carrying frame (F1,F2). All of the shaped rollers are turned towards the centre of the line, and in the absence of a profile (that is, in cases where maintenance or size changeover operations are planned), they are in the operator's view, without any obstacles or other front parts, except for the safety guards required under current legislation.
  • each shaped roller (13,23,33,43) can be accessed with considerable ease in case of need, for example for maintenance operations or disassembly and replacement operations.
  • each shaped roller is directly coupled with its spindle, so that the cage overall requires neither a reduction gearbox nor any other additional transmission member.
  • each motor is adjustable along a vertical direction.
  • This is preferable in general, and in particular both in the embodiment of figure 1 , and in the embodiment of figure 3 .
  • the vertical adjustment enables the position of the shaped rollers to be adapted to the thickness of the sheet and/or dimensions or conformation of the profile.
  • the vertical adjustment of each motor can be obtained by means of guides and actuators, within the grasp of the person skilled in the art, interposed, for example, between each motor and the corresponding carrying frame (F1,F2).
  • the position of one or more shaped rollers can be adjusted along a horizontal direction.
  • the horizontal direction of adjustment of each roller is perpendicular to the longitudinal direction (Y) of the profiling line, for example it coincides with or is parallel to the rotation axis of the roller itself.
  • the adjustment of each shaped roller along the horizontal direction can be obtained, for example, by adjusting the position of the respective motor (11,21,31,41), or providing an adjustable coupling in an axial direction between each shaped roller (13,23,33,43) and the corresponding spindle (12,22,32,42).
  • the horizontal adjustment of each motor (11,21,31,41) can be obtained by means of guides and actuators, within the grasp of the person skilled in the art, interposed, for example, between each motor and the corresponding carrying frame (F1,F2).
  • each shaped roller (13,23,33,43) enables the position of the shaped rollers to be adapted to the thickness of the sheet and/or dimensions or conformation of the profile. Furthermore, the horizontal adjustment of each shaped roller (13,23,33,43) makes it possible to align, along a longitudinal direction of the profiling line, the various cages arranged in succession, and to align the upper rollers with the lower rollers. In a possible configuration, the lower shaped rollers (23,43) are fixed, whereas the upper shaped rollers (13,33) are horizontally movable so as to be adapted to the profile of the lower shaped rollers.
  • the carrying frame or frames (F1,F2) of each cage can be equipped with a horizontal adjustment means, which enables the position of each carrying frame to be adjusted along a horizontal direction perpendicular to the longitudinal direction (Y) of the profiling line.
  • the presence of the horizontal adjustment means enables the length of the spindles to be reduced. In fact, the smaller the profile to be made is, the more each cage will be shifted towards the centre of the line, thereby reducing the distance between the centre of the profile and the spindles. This makes it possible to increase the rigidity of the spindles and the precision of the line.
  • the horizontal adjustment means can comprise, for example, a guide interposed between the base (D) of each frame (F1,F2) and an actuator device for controlling the sliding of the carrying frame along the guide.
  • the adjustment means is within the grasp of the person skilled in the art and will thus not be described in further detail.
  • the profiling line comprising a plurality of roller cages (G) can be equipped with an automatic device for aligning the shaped rollers (13,23,33,43) relative to the longitudinal direction (Y).
  • the device is configured to adjust the position of each shaped roller (13,23,33,43) along a horizontal direction perpendicular to the longitudinal direction (Y) and along a vertical direction. This adjustment could be made, for example, by horizontally and/or vertically moving each motor (11,21,31,41), in the manner already described previously, or in combination with the horizontal movement of the support frames (F1,F2).
  • the alignment device can acquire the actual position of each shaped roller (13,23,33,43) by means of a detector of an optical type, for example by means of a laser detector.
  • each roller cage (G) can be equipped with a dimensional detector (not represented) placed preferably on the exit side, configured to detect and measure certain geometric parameters of the profile exiting the cage (G), for example a radius of curvature, or the height or width of the profile relative to a horizontal plane.
  • a dimensional detector can be connected to the automatic alignment device, which serves to adjust the position of each shaped roller in relation to the signal received, thus optimising the forming process.
  • each motor (11,21,31,41) is a permanent-magnet brushless motor.
  • each motor (11,21,31,41) is a motor of the torque type.
  • a torque motor lends itself particularly well to a direct coupling with the member to be driven in rotation, in this case a shaped roller.
  • roller cage according to the present invention achieves important advantages.
  • the cantilevered positioning of the shaped rollers (13,23,33,43) present considerably facilitates all roller maintenance, disassembly and replacement operations, since the rollers are facing the operator without obstacles or other front parts.
  • each shaped roller present and the respective spindle makes it possible to avoid the use of reduction gearboxes, joints and other transmissions which, in addition to increasing the costs of the cage, produce an appreciable reduction in the mechanical efficiency of the cage itself.
  • the version of the cage comprising two opposing support frames, each with its own shaped rollers, together with the possibility of adjusting the position of each shaped roller relative to the longitudinal direction of the profiling line, increases the conformations obtainable for the profile being machined.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP17167231.4A 2016-05-03 2017-04-20 Cage à rouleaux pour une ligne de profilage Active EP3241627B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUA2016A003098A ITUA20163098A1 (it) 2016-05-03 2016-05-03 Gabbia a rulli per linea profilatrice

Publications (2)

Publication Number Publication Date
EP3241627A1 true EP3241627A1 (fr) 2017-11-08
EP3241627B1 EP3241627B1 (fr) 2022-07-20

Family

ID=56740405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17167231.4A Active EP3241627B1 (fr) 2016-05-03 2017-04-20 Cage à rouleaux pour une ligne de profilage

Country Status (7)

Country Link
US (1) US20170320117A1 (fr)
EP (1) EP3241627B1 (fr)
JP (1) JP2017200706A (fr)
BR (1) BR102017009257A2 (fr)
CA (1) CA2966106A1 (fr)
IT (1) ITUA20163098A1 (fr)
MX (1) MX2017005722A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111185697A (zh) * 2020-03-04 2020-05-22 李火城 一种太阳能热水器水箱内胆滚圆焊接机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746216B (zh) * 2018-05-24 2019-09-27 首钢智新迁安电磁材料有限公司 一种确定冷轧机传动力矩的方法及装置
CN110508627B (zh) * 2019-08-27 2020-07-03 燕山大学 电磁调控轧辊调控能力综合测试平台及测试方法
CN111136109A (zh) * 2019-12-18 2020-05-12 大连富地重工机械制造有限公司 一种间距调整装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2439017A1 (de) * 1974-08-14 1976-02-26 Rueppel Geb Schwab Gertrud Profilwalzmaschine mit hilfsmittel zum auswechseln der profilwalzen
JPS5744403A (en) * 1980-08-28 1982-03-12 Daido Steel Co Ltd Shifting rolling apparatus
EP0122550A1 (fr) * 1983-04-14 1984-10-24 Fried. Krupp Gesellschaft mit beschränkter Haftung Dispositif d'entraînement de cylindres pour la coulée en continu
JPS62151019U (fr) * 1986-03-13 1987-09-25
EP0365976B1 (fr) * 1988-10-25 1993-07-21 Gerhard Dipl.-Ing. Krückels Machine de profilage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1105063A (fr) * 1954-07-20 1955-11-28 Est Aciers Fins Perfectionnements aux cylindres et cages de laminoirs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2439017A1 (de) * 1974-08-14 1976-02-26 Rueppel Geb Schwab Gertrud Profilwalzmaschine mit hilfsmittel zum auswechseln der profilwalzen
JPS5744403A (en) * 1980-08-28 1982-03-12 Daido Steel Co Ltd Shifting rolling apparatus
EP0122550A1 (fr) * 1983-04-14 1984-10-24 Fried. Krupp Gesellschaft mit beschränkter Haftung Dispositif d'entraînement de cylindres pour la coulée en continu
JPS62151019U (fr) * 1986-03-13 1987-09-25
EP0365976B1 (fr) * 1988-10-25 1993-07-21 Gerhard Dipl.-Ing. Krückels Machine de profilage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111185697A (zh) * 2020-03-04 2020-05-22 李火城 一种太阳能热水器水箱内胆滚圆焊接机

Also Published As

Publication number Publication date
US20170320117A1 (en) 2017-11-09
EP3241627B1 (fr) 2022-07-20
BR102017009257A2 (pt) 2017-11-07
MX2017005722A (es) 2018-08-20
CA2966106A1 (fr) 2017-11-03
JP2017200706A (ja) 2017-11-09
ITUA20163098A1 (it) 2017-11-03

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