EP3233317B1 - A roller guide and a method for guiding stock - Google Patents

A roller guide and a method for guiding stock Download PDF

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Publication number
EP3233317B1
EP3233317B1 EP15870447.8A EP15870447A EP3233317B1 EP 3233317 B1 EP3233317 B1 EP 3233317B1 EP 15870447 A EP15870447 A EP 15870447A EP 3233317 B1 EP3233317 B1 EP 3233317B1
Authority
EP
European Patent Office
Prior art keywords
stock
guide rollers
guide
guiding
roller
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
EP15870447.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3233317A4 (en
EP3233317A1 (en
Inventor
Ove Englund
Peter MÅRSTEDT
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.)
Morgardshammar AB
Original Assignee
Morgardshammar AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Morgardshammar AB filed Critical Morgardshammar AB
Priority to PL15870447T priority Critical patent/PL3233317T3/pl
Publication of EP3233317A1 publication Critical patent/EP3233317A1/en
Publication of EP3233317A4 publication Critical patent/EP3233317A4/en
Application granted granted Critical
Publication of EP3233317B1 publication Critical patent/EP3233317B1/en
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
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/18—Rolls or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/18—Presence of 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
    • 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
    • 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
    • B21B38/08—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-force

Definitions

  • the invention relates to a roller guide for guiding stock in a longitudinal feeding direction toward a pair of rolls for shaping the stock according to the preamble of claim 1 and to a method for guiding stock according to the preamble of claim 9, see for example JP H07 155820 .
  • the invention relates to a roller guide and to a method for use in the production of wire, rods and beams.
  • Roller guides are commonly used for guiding hot stock, such as wire stock or rod stock, in rolling mills.
  • roller guides are placed before a pair of rolls used to shape the stock, so called entry roller guides.
  • These roller guides guide the stock which is to be rolled toward a particular rolling groove.
  • the use of roller guides reduces the risk of damaging the stock upon entry between the pair of rolls and enables feeding the stock at high feeding rates.
  • US3935722 discloses a roller guide for guiding stock toward a pair of rolls.
  • the roller guide comprises a frame arrangement and a pair of guide rollers mounted on the frame arrangement, which guide rollers are configured to engage opposite surface portions of the stock.
  • the guide rollers are rotatable about parallel axes of rotation perpendicular to a longitudinal feeding direction.
  • roller guides further commonly comprise positioning means for adjusting a lateral distance between the guide rollers to be able to accommodate stock of different dimensions.
  • the lateral distance between the guide rollers is adjusted before operation of the roller guide, and the lateral distance is constant or essentially constant during operation of the roller guide.
  • the lateral distance between the guide rollers is set slightly smaller than the lateral dimension of the stock, such that the guide rollers press on the surface portions of the stock. This is necessary to achieve an efficient and accurate guiding of the stock.
  • a problem with such known roller guides is that the guide rollers are heavily worn due to the large forces resulting when the stock enters between the guide rollers.
  • JP H07 155820 discloses a roller guide wich comprises positioning means for adjusting the lateral distacnce between the guide rollers, and detection means configured to detect a longitudinal position of a piece of stock with respect to the guide rollers, wherein the positioning means is configured to adjust the lateral distance between the guide rollers in response to said detection.
  • the roller guide comprises detection means configured to detect a longitudinal position of a piece of stock with respect to the guide rollers, and positioning means configured to adjust the lateral distance between the guide rollers in response to said detection.
  • the positioning means is configured to move the guide rollers between the closed position and an open position, in which the lateral distance between the guide rollers is such as to allow free passage of the stock between the guide rollers.
  • the desired positions of the guide rollers in the open position and the closed position, respectively, can be predefined before operation of the roller guide.
  • the positioning means is configured to move the guide rollers to the open position when no stock is detected between the guide rollers.
  • the guide rollers are positioned such that the first end of each piece of stock entering the roller guide can pass freely between the guide rollers.
  • the positioning means is configured to move the guide rollers to the closed position when it is detected that a first end of the piece of stock has passed between the guide rollers. This provides a way to achieve efficient guiding once the piece of stock is already between the guide rollers, without risk of damaging the guide rollers as the first end of the piece of stock enters between them.
  • the roller guide further comprises primary guiding means configured to guide the stock toward the guide rollers.
  • the primary guiding means are useful for rough guiding of the stock toward the roller guides.
  • the primary guiding means are in the form of a guiding funnel which at least partly has the basic shape of a truncated cone.
  • the roller guide further comprises adjustment means for adjusting the primary guiding means between a guiding position, in which the primary guiding means is configured to guide the stock toward the guide rollers, and a non-guiding position, in which the primary guiding means is configured to allow free passage of the stock through the primary guiding means.
  • the primary guiding means can be used in the guiding position only when necessary in order to reduce wear on the primary guiding means resulting from contact with the fed stock.
  • the adjustment means is configured to adjust the primary guiding means to the non-guiding position when a piece of stock is detected between the guide rollers. In this way, the wear on the primary guiding means is minimized, since the stock is allowed free passage as soon as it has entered between the guide rollers.
  • the primary guiding means can for example be adjusted to the guiding position either when it is detected that a rear end of a stock exits the roller guide, or when it is detected that a first end of a stock is approaching the primary guiding means.
  • the positioning means is in the form of a mechanic, electric, hydraulic or pneumatic positioning means.
  • the hydraulic fluid used in the case of a hydraulic positioning means, as well as the pneumatic fluid used in the case of a pneumatic positioning means, should be a fluid which is suitable for power transfer at the conditions applicable in the roller guide.
  • Mechanic, electric, hydraulic and pneumatic positioning means are able to provide fast and efficient power transfer and are therefore suitable for use in the roller guide, where the travelling speed of fed stock necessitates fast reactions.
  • the positioning means is servo actuated.
  • This is particularly useful for electric positioning means and provides an excellent position control.
  • the servo actuation enables quick adjustments of the distance between the guide rollers and can be used for preadjustment of the lateral distance between the guide rollers, or if applicable of the primary guiding means, as a piece of stock is approaching. Fast adaptations to the dimension of the piece of stock are thereby possible.
  • the roller guide further comprises sensing means for sensing a force applied by the stock on the roller guide.
  • sensing means for sensing a force applied by the stock on the roller guide.
  • One or more force sensors or the like can be used to sense forces at various positions in the roller guide, such as in the primary guiding means or in the guide rollers.
  • the system may be configured such that an error code and/or an alarm signal is generated if the sensing means senses a force exceeding a predetermined threshold level, or a force deviating from an expected level by an amount exceeding a predetermined threshold level.
  • the positioning means is configured to move the guide rollers in response to a force sensed by the sensing means.
  • the positioning means may e.g. be configured to, in response to a sensed force exceeding a predetermined threshold level, temporarily move the guide rollers. In this way, it is possible to achieve a guiding with a constant or nearly constant force applied on the stock. This provides protection against too high forces applied on the roller guide by the stock and potentially increases the tool durability of the roller guide.
  • the roller guide further comprises dimension measurement means for determining a dimension of the stock.
  • dimension measurement means for determining a dimension of the stock. This is a practical way of obtaining the dimension of the stock and is particularly useful for roller guides placed between successive pairs of rolls in a continuous rolling mill. It is also useful in order to enable adaptation of the lateral distance between the guide rollers in the closed and in the open position, respectively. This can be achieved by arranging the dimension measurement means such that the dimension is measured before the piece of stock enters into the roller guide. In this way, the roller guide can be configured such that the force applied on the stock by means of the guide rollers is always of the same magnitude.
  • the method comprises the following steps:
  • the lateral distance between the guide rollers is reduced such that the guide rollers engage said opposite surface portions of the stock.
  • the lateral distance between the guide rollers is increased such that free passage of a first end of a piece of stock between the guide rollers is allowed.
  • the roller guide further comprises primary guiding means configured to guide the stock toward the guide rollers
  • the method further comprises the step:
  • FIG. 1-4 A schematic illustration of a roller guide 1 according to an embodiment of the present invention is shown in fig. 1-4 .
  • the roller guide 1 is intended for guiding stock in a longitudinal feeding direction A in a rolling mill, primarily toward a pair of rolls for shaping the stock.
  • the roller guide 1 comprises a frame arrangement 2 and a pair of guide rollers 3, 4, each guide roller 3, 4 being mounted on an arm 5, 6 of the frame arrangement 2.
  • the arms 5, 6 are pivotable and movable such that a lateral distance, i.e. in a direction perpendicular to the feeding direction A, between the guide rollers 3, 4 can be adjusted.
  • the guide rollers 3, 4 are rotatable about parallel axes of rotation C3, C4 perpendicular to the longitudinal feeding direction A and to the lateral direction.
  • the roller guide 1 further comprises a control unit 7 in which positioning means for adjusting the lateral distance between the guide rollers 3, 4 by means of moving and pivoting the arms 5, 6 is comprised.
  • Detection means 13 for detecting that a first end 20a of the piece of stock 20 is approaching the guide rollers 3, 4 is provided on the inside of the guiding part 11.
  • the roller guide further comprises primary guiding means 9 configured to guide the stock toward the guide rollers 3, 4.
  • the primary guiding means 9 is in the form of a guiding funnel comprising an entry funnel 10 and two guiding parts 11, 12.
  • Adjustment means for adjusting the primary guiding means 9 between a guiding position, in which the primary guiding means 9 is configured to guide the stock toward the guide rollers 3, 4, and a non-guiding position, in which the primary guiding means is configured to allow free passage of the stock through the primary guiding means 9, is provided in the control unit 7.
  • Fig. 1 shows the roller guide 1 before entry of a piece of stock 20 into the roller guide 1.
  • the guide rollers 3, 4 are positioned after the primary guiding means 9 in the longitudinal feeding direction A.
  • the control unit 7 comprises positioning means (not shown) for moving the guide rollers 3, 4 and adjustment means (not shown) for adjusting the position of the guiding parts 11, 12 of the primary guiding means 9.
  • the primary guiding means 9 are in the guiding position.
  • the guiding parts 11, 12 are positioned close to each other such that a narrow channel for guiding the piece of stock 20 between the guiding parts 11, 12 is formed.
  • the guide rollers 3, 4 are in an open position, in which the lateral distance between the guide rollers 3, 4 is sufficiently large to allow free passage of the piece of stock 20 without physical interaction with the guide rollers 3, 4.
  • the piece of stock 20 has entered into the primary guiding means 9 of the roller guide.
  • the primary guiding means 9 is still in the guiding position and the guide rollers 3, 4 are in the open position.
  • the first end 20a of the piece of stock 20 has just passed the detection means 13.
  • a signal is sent from the detection means 13 to the control unit 7 comprising the positioning means and the adjustment means. The positioning means and the adjustment means are thereby activated.
  • the positioning means has moved the guide rollers 3, 4 from the open position to a closed position, with a decreased lateral distance between the guide rollers 3, 4, and the front end 20a of the piece of stock 20 has passed between the guide rollers 3, 4.
  • the adjustment means has moved the primary guiding means 9 to the non-guiding position by increasing the lateral distance between the guiding parts 11, 12.
  • the guide rollers 3, 4 thus engage opposite surface portions of the piece of stock 20 and thereby apply a guiding force, while free passage is allowed through the primary guiding means 9.
  • means for measuring or estimating the travelling speed of the piece of stock 20 may be provided on the guide roller 1. Information about the travelling speed may also be obtained from some other, external source.
  • Alternative ways of determining that the first end 20a has passed between the guide rollers 3, 4 include placing a detector on the level of the guide rollers 3, 4 or just after the guide rollers 3, 4 in the feeding direction.
  • the positioning means and the adjustment means may be comprised in the same control unit as shown above, but may also be controlled separately.
  • the positioning means and the adjustment means may be mechanic, electric, hydraulic or pneumatic and may be servo actuated.
  • the positioning means are configured to effect adjustment of the lateral distance between the guide rollers 3, 4 by means of pivoting and displacing the arms 5, 6 on which the guide rollers 3, 4 are mounted.
  • the positioning means may instead be configured to effect adjustment of the lateral distance by lateral displacement only, without pivoting action.
  • the guide roller 1 is preferably displaceable in the lateral direction, for example along a guiding track, such that it can be used to guide stock toward different rolling grooves of a pair of rolls placed after the roller guide.
  • Sensing means for sensing a force applied by the stock on the roller guide 1, such as a force sensor, e.g. in the form of a strain gage placed on one or both arms 5, 6, is preferably provided on the roller guide 1.
  • the force sensor can be used for overload protection and should therefore preferably be connected to the positioning means.
  • protection measures are activated. For example, the lateral distance between the guide rollers 3, 4 can be temporarily increased, or the tension from the positioning means, keeping the guide rollers 3, 4 in the closed position, can be temporarily released. If the force sensed by the force sensor exceeds the threshold, an alarm signal may be generated to alert an operator of the roller guide.
  • the positioning means are preferably configured such that the stock is guided at a constant load, i.e. so that the force applied by the guide rollers on the stock is constant, or nearly constant, when the guide rollers are in the closed position.
  • the closed position may therefore not be static in terms of lateral distance between the guide rollers, but may be defined as a certain force applied by the guide rollers on the stock.
  • the roller guide may also comprise dimension measurement means for determining a dimension of the stock and means for measuring vibrations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Metal Extraction Processes (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)
EP15870447.8A 2014-12-18 2015-06-15 A roller guide and a method for guiding stock Active EP3233317B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15870447T PL3233317T3 (pl) 2014-12-18 2015-06-15 Prowadnica rolkowa i sposób prowadzenia surowca

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1451577A SE538558C2 (en) 2014-12-18 2014-12-18 A roller guide and a method for guiding stock
PCT/SE2015/050688 WO2016099370A1 (en) 2014-12-18 2015-06-15 A roller guide and a method for guiding stock

Publications (3)

Publication Number Publication Date
EP3233317A1 EP3233317A1 (en) 2017-10-25
EP3233317A4 EP3233317A4 (en) 2018-07-18
EP3233317B1 true EP3233317B1 (en) 2020-04-15

Family

ID=56127067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15870447.8A Active EP3233317B1 (en) 2014-12-18 2015-06-15 A roller guide and a method for guiding stock

Country Status (10)

Country Link
US (1) US20170341118A1 (ru)
EP (1) EP3233317B1 (ru)
JP (1) JP2017538584A (ru)
KR (1) KR20170096167A (ru)
CN (1) CN107000004B (ru)
ES (1) ES2804835T3 (ru)
PL (1) PL3233317T3 (ru)
RU (1) RU2695845C2 (ru)
SE (1) SE538558C2 (ru)
WO (1) WO2016099370A1 (ru)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE540328C2 (en) * 2016-10-19 2018-06-26 Morgaardshammar Ab A guide roller assembly and a roller guide
CN109834119B (zh) * 2019-04-02 2021-01-26 马鞍山钢铁股份有限公司 一种消除轧机导位磨损间隙的方法
US11701694B2 (en) * 2021-06-11 2023-07-18 Primetals Technologies USA LLC Automated calibration and realtime communication of data, problems, damage, manipulation, and failure from a network of battery powered smart guide nodes within a rolling mill

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Also Published As

Publication number Publication date
CN107000004B (zh) 2019-12-10
PL3233317T3 (pl) 2020-09-21
SE1451577A1 (en) 2016-06-19
ES2804835T3 (es) 2021-02-09
EP3233317A4 (en) 2018-07-18
KR20170096167A (ko) 2017-08-23
JP2017538584A (ja) 2017-12-28
RU2017125314A3 (ru) 2019-01-18
CN107000004A (zh) 2017-08-01
RU2695845C2 (ru) 2019-07-29
EP3233317A1 (en) 2017-10-25
SE538558C2 (en) 2016-09-20
WO2016099370A1 (en) 2016-06-23
US20170341118A1 (en) 2017-11-30
RU2017125314A (ru) 2019-01-18

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