EP3356063B1 - Vorrichtung und verfahren zum richtpressen eines metallischen flachproduktes - Google Patents

Vorrichtung und verfahren zum richtpressen eines metallischen flachproduktes Download PDF

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Publication number
EP3356063B1
EP3356063B1 EP16770787.6A EP16770787A EP3356063B1 EP 3356063 B1 EP3356063 B1 EP 3356063B1 EP 16770787 A EP16770787 A EP 16770787A EP 3356063 B1 EP3356063 B1 EP 3356063B1
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EP
European Patent Office
Prior art keywords
press frame
roll
straightening
roll stand
flat product
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
EP16770787.6A
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German (de)
English (en)
French (fr)
Other versions
EP3356063A1 (de
Inventor
Hans-Jürgen Bender
Manfred DINGENOTTO
Peter Schmitz
Günther THÜS
Gerhard Horn
Achim Klein
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.)
SMS Group GmbH
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SMS Group GmbH
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Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3356063A1 publication Critical patent/EP3356063A1/de
Application granted granted Critical
Publication of EP3356063B1 publication Critical patent/EP3356063B1/de
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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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/06—Removing local distortions
    • 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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling

Definitions

  • the invention relates to a device for straightening a metallic flat product, a rolling stand, in particular a horizontal rolling mill, with this device and a method for operating such a roll stand.
  • Roll stands in particular horizontal rolling stands, for preferably horizontal rolling of flat metal products are well known in the art.
  • quarto scaffolds with two work rolls and two back-up rolls are commonplace.
  • rolling stands are used exclusively for rolling steel or non-ferrous metals on a flat track.
  • Known means for straightening typically have an upper pressing frame with a plunger and a lower press frame with a table for supporting the flat product to be straightened, wherein the upper press frame is arranged above the lower press frame and both press frames are movable in the vertical direction relative to each other.
  • the invention has for its object to provide a device for straightening a metallic flat product, a rolling mill with this device and a method for operating such a rolling stand, which allow an economically efficient straightening of flat products.
  • the upper press frame has support elements in the region of its two narrow sides as points of application for a balancing device for the upper work roll in a roll stand; and that the lower press frame has in the region of its two narrow sides supporting elements for supporting on the uprights of the roll stand.
  • metallic flat product means in the context of the present description, for example, a metal plate or a metal sheet or a metal strip.
  • balancing device may not only mean separate balancing cylinders for the work rolls, but also includes a bending device, in particular bending cylinders, which perform a balancing function for the work rolls.
  • the term table basically means a plate.
  • the trough in the table or the plate is in the simplest case a recess.
  • the table with the trough is typically attached to the lower press frame and the plunger to the upper press frame; but also the reverse arrangement is possible.
  • the apparatus also called directional cassette
  • a slot for a rolling stand which instead of the Work rolls can be inserted into the mill stand.
  • the rolling stand is operable not only in a "rolling" mode (with built-in work rolls), but alternatively also in a "straightening press” operating mode (with a built-in insert instead of the work rolls).
  • the hydraulic setting cylinders available in the (horizontal) rolling stand for the support rolls are used meaningfully to provide large straightening forces which can bring about a fundamental improvement in the straightening, in particular of thick sheets.
  • the upper pressing frame is supported via supporting bolts on the lower pressing frame.
  • the support pins are immersed in associated holes in the opposite pressing frame. In this way, an undesired lateral displacement of the plunger is prevented during straightening.
  • the vertical positioning of the upper and lower pressing frames relative to one another takes place over those cylinders which in the rolling operation serve for bending or balancing the work rolls.
  • a coupling element may be mounted for releasably coupling the straightening cassette to a roll changing device.
  • roll changing device in particular a pulling or pushing device
  • the Straightening cassette advantageously quite simple - typically on the operating side - in the rolling stand and retracted.
  • rails are laid in the longitudinal direction of the upper and / or the lower pressing frame and the plunger and / or the table are formed on the pressing frame each as a carriage for moving on the rails in the longitudinal direction of the pressing frame.
  • the upper press frame has on one of its narrow sides an upper drive device, preferably an upper spindle drive, for moving the carriage in the form of the pressure ram or the table on the rails of the upper press frame.
  • an upper drive device preferably an upper spindle drive
  • the lower pressing frame on one of its narrow sides, a lower drive means, preferably a lower spindle drive, for moving the carriage in the form of the table or the plunger on the rails of the lower pressing frame.
  • the narrow sides of the pressing frame, where the drive devices are mounted are preferably those sides which lie on the operating side after insertion of the straightening cassette into the rolling stand, since relatively simple energy and media connections can be reversed there.
  • a control device of the rolling stand is designed to provide both operating modes, that is to say the “rolling operation” and the “directional pressing operation”.
  • the rolling mill operator has the option of selecting one of the two operating modes as required.
  • FIG. 1 shows a perspective view of the device 100 according to the invention, also called directional cassette, for straightening a metallic flat product, For example, a sheet in a rolling stand.
  • the device 100 consists of an upper pressing frame 110 and a lower pressing frame 120.
  • Fig. 1 shows the straightening cassette in a disassembled state, ie not installed in a roll stand.
  • the upper press frame 110 is disposed longitudinally offset from the lower press frame 120.
  • the upper press frame 110 typically rests on support pins 130 on the lower press frame 120.
  • the support bolts 130 are arranged in the region of the narrow sides of the press frames 110, 120 and are preferably fixedly mounted on the upper press frame.
  • the upper pressing frame 110 has formed in the region of its narrow sides supporting elements 114, which serve as points of application for a balancing device, for example Balancierzylinder for the upper work roll in the rolling stand when installed in a rolling stand.
  • the lower pressing frame 120 has formed in the region of its narrow sides supporting elements 124, which serve when mounted in the roll stand for supporting on the uprights of the roll stand.
  • the support elements 124 are sliding elements or rollers which, during installation of the straightening cassette into the rolling stand and during removal of the straightening cassette from the rolling stand, slide onto the rails 370 for the installation and removal of the work rolls which are present anyway in the rolling stand . roll; see also Fig. 3 ,
  • the longitudinal extent of the upper and lower pressing frame corresponds at least approximately to the width of the rolling stand from the drive to the operating side.
  • a coupling element 140 on one end face of the device 100 can be seen for releasably coupling the device or straightening cassette to a pulling or pushing device 400.
  • the pulling or pushing device 400 serves to align the straightening cassette 100 with the upper and lower pressing frames out of the frame region to move into the framework area.
  • the pulling or pushing device is preferably a (rolling) changing device, in particular a roller changing locomotive, see Fig. 5 ,
  • FIG. 2 shows a longitudinal section through the inventive device 100.
  • Fig. 2 shows the straightening cassette in a dismantled state with staggered upper and lower pressing frames, as described above with respect to Fig.1 described.
  • rails 150-1 are preferably laid in the longitudinal direction of the upper pressing frame on its side facing the lower pressing frame.
  • a plunger 112 which is designed as a carriage, arranged movable.
  • rails 150-2 are also preferably arranged on the upper side facing the upper pressing frame in the longitudinal direction of the lower pressing frame.
  • the rails 150-2 designed as a slide table 122 for placing the flat product to be straightened is arranged movable; see the horizontal arrows in Fig. 2 ,
  • the table points, as in Fig. 1 can be seen, a trough 123, as a space in which the material of the flat product during the straightening process can be pushed in or overstretched.
  • the upper press frame 110 has an upper drive 210 for moving the plunger 112 formed on the rails 150-1 of the upper press frame.
  • the lower pressing frame 120 has a lower drive device 220 for moving the designed as a slide table 122.
  • the drive means 210, 220 are preferably attached to those end faces of the press frames 110, 120, which in installation of the device 100 in a Roll stand on the operating side of the rolling stand.
  • the drive means 210, 220 which are preferably each formed as a spindle drives, then the table 122 and the plunger 112, preferably independently of each other, along the rails 150-1, 150-2 are each suitably positioned.
  • Positioning suitable means in particular, that the table 122 and the plunger 112 are moved relative to one another in such a way that the plunger 112 is positioned precisely in the region of the unevenness to be straightened in the flat product.
  • Fig. 3 shows the rolling mill 300 according to the invention, here by way of example a four-high rolling stand with two back-up rolls 310, 320 and normally also two work rolls, which, however, in Figure 3 not shown because expanded.
  • the upper back-up roll 310 and the lower back-up roll 320 are both raised.
  • the inventive device 100 that is, the straightening cassette is installed in the mill stand 300.
  • the lower pressing frame 120 is supported with its support elements 124 on the rails 370 for the change of the work rolls.
  • the upper pressing frame 110 is detachably coupled via its supporting elements 114 to a balancing device 330 and is supported by this in the vertical direction.
  • the balancer 330 normally serves to balance, that is, to compensate for the weight of the upper work roll, when the mill is operated in a rolling mode.
  • Fig. 3 shows the rolling stand 300 with the built-in straightening cassette retrofitted for an inventive operating mode "straightening".
  • the balancer serves for carrying, that is, for compensating the weight of the upper press frame 110 Fig. 3 initially, the raised upper support roller 310 still has no contact with the upper pressing frame 110, and the lower supporting roller 320 initially has no contact with the lower pressing frame 120; insofar shows Fig. 3 the rolling stand in a preparation state for the Richtpress memori.
  • Fig. 4 shows the mill 300 according to the invention also with built-in straightening cassette 100.
  • the lower support roller 320 employed by means of a vertical adjusting device 340 from below against the lower pressing frame 120.
  • the lower press frame 120 is at least slightly lifted off the rails 370 for the work roll change and supported against acting in the directional pressing operation acting in the vertical direction straightening forces.
  • the upper support roller 310 is placed in a predetermined abutment position for the upper press frame 110 by means of the mechanical adjustment 360.
  • the upper pressing frame 110 is employed with the aid of the balancing device 330 in a non-positive and clearance-free manner against the upper support roller 310 in the stop position.
  • Said straightening of the flat product by pressing the flat product from below is selected when the hydraulic vertical adjusting device is provided at the bottom of the rolling stand for pushing the lower supporting roll 320 upwards.
  • the position of plunger and trough compared to the embodiment according to the FIGS. 1 to 4 be reversed, so that in this case, theriolunotede unevenness extends downwards.
  • a plan for straightening the flat product can be prepared considering data on the flat product, such as material grade, thickness and width, taking into account information about the bump, such as location of the defect, size / depth and type of defect as well optionally including a process model.
  • the unevenness to be straightened in the flat product can be automatically detected, for example, with the aid of a scanner in the form of images.
  • the information about the bump may then be obtained by evaluating the images of the scanner preferably be determined at least partially automatically.
  • the respective current position of the flat product can be regularly monitored and corrected in the event of a detected deviation from a respective desired position.
  • the result of the straightening process can be monitored and compared with a predetermined desired result. That is, it can be checked to what extent the original unevenness in the flat product has already been eliminated. With a detected insufficient quality of the judging result, i. a still insufficient removal of the unevenness, the judging can be repeated.
  • the two support rollers 310, 320 and the upper and the lower pressing frame are raised again.
  • the steps described above for the installation of the straightening cassette into the rolling stand are carried out in reverse order.
  • All steps of the process can be performed manually or controlled. Preferably, however, they are at least partially executed automatically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Press Drives And Press Lines (AREA)
  • Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP16770787.6A 2015-10-02 2016-09-27 Vorrichtung und verfahren zum richtpressen eines metallischen flachproduktes Active EP3356063B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015219127.3A DE102015219127A1 (de) 2015-10-02 2015-10-02 Vorrichtung zum Richtpressen eines metallischen Flachproduktes
PCT/EP2016/072943 WO2017055258A1 (de) 2015-10-02 2016-09-27 Vorrichtung und verfahren zum richtpressen eines metallischen flachproduktes

Publications (2)

Publication Number Publication Date
EP3356063A1 EP3356063A1 (de) 2018-08-08
EP3356063B1 true EP3356063B1 (de) 2019-08-07

Family

ID=56997509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16770787.6A Active EP3356063B1 (de) 2015-10-02 2016-09-27 Vorrichtung und verfahren zum richtpressen eines metallischen flachproduktes

Country Status (8)

Country Link
US (1) US10987713B2 (zh)
EP (1) EP3356063B1 (zh)
JP (1) JP6703099B2 (zh)
KR (1) KR102064477B1 (zh)
CN (1) CN108136467B (zh)
DE (1) DE102015219127A1 (zh)
RU (1) RU2694306C1 (zh)
WO (1) WO2017055258A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116393504A (zh) * 2022-12-29 2023-07-07 陕西天成航空材料有限公司 一种小规格棒材组织优化轧制设备
CN116060482B (zh) * 2023-03-06 2023-06-27 沈阳忠威金属制品有限公司 一种金属加工设备

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SU1423215A1 (ru) * 1986-11-26 1988-09-15 С. Н. Ясаков и В. М. Михеев Штамп дл правки плоских деталей
DE3736628A1 (de) 1987-10-29 1989-05-11 Schuler Gmbh L Presse mit einem zum wechseln von werkzeugen verfahrbaren schiebetisch
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Also Published As

Publication number Publication date
US20180272403A1 (en) 2018-09-27
DE102015219127A1 (de) 2017-04-06
JP6703099B2 (ja) 2020-06-03
US10987713B2 (en) 2021-04-27
EP3356063A1 (de) 2018-08-08
KR20180043801A (ko) 2018-04-30
KR102064477B1 (ko) 2020-01-09
WO2017055258A1 (de) 2017-04-06
JP2018531153A (ja) 2018-10-25
CN108136467A (zh) 2018-06-08
RU2694306C1 (ru) 2019-07-11
CN108136467B (zh) 2020-07-14

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