EP0274722B1 - Richtmaschine für Bleche und Bänder - Google Patents

Richtmaschine für Bleche und Bänder Download PDF

Info

Publication number: EP0274722B1
Authority: EP; European Patent Office
Prior art keywords: straightening; rolls; cassette; rollers; straightening rolls
Prior art date: 1987-01-10
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.): Expired - Lifetime

Application number

EP87118938A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0274722A2 (de

EP0274722A3 (en

Inventor

Willi Benz

Walter Eltinger

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 Siemag AG

Original Assignee

SMS Schloemann Siemag AG

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.)

1987-01-10

Filing date

1987-12-21

Publication date

1991-09-25

1987-12-21 Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG

1987-12-21 Priority to AT87118938T priority Critical patent/ATE67696T1/de

1988-07-20 Publication of EP0274722A2 publication Critical patent/EP0274722A2/de

1989-12-20 Publication of EP0274722A3 publication Critical patent/EP0274722A3/de

1991-09-25 Application granted granted Critical

1991-09-25 Publication of EP0274722B1 publication Critical patent/EP0274722B1/de

2007-12-21 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

the invention relates to a straightening machine for sheets and strips, in particular for cold-rolled sheets and strips, according to the preamble of claim 1, and is therefore based on a prior art known from practice, the so-called "tilting yoke adjustment".
Straightening machines of this type as are known from EP-A-0 005 760, have upper and lower transverse yokes or crossheads and exchangeable cassettes which are divided in the central vertical transverse plane of the straightening rollers and are connected to one another by articulated connections such that the cross-head and cassette parts together with the groups of support rollers for the straightening rollers that they support can be easily tilted or turned into a V-shape under no-load conditions.
the crossheads and interchangeable cassettes should bend so far that the preset V-shape disappears, the groups of support rollers are axially aligned and, accordingly, the straightening rollers are straight. This is to compensate for the deflection of the crossheads.
the crossheads or at least the upper crosshead as a whole can be adjusted obliquely in the feed direction of the straightening goods by means of two pairs of adjusting devices which are supported on stands, in order, as is known, to decrease the immersion depth of the offset straightening rollers for hyperextension distribution from the infeed side of the straightening goods to the outlet side adjust.
the bending behavior of the divided crossheads of known sheet metal straightening machines with the tilting yoke described is determined in that the crossheads are to be understood as supports with two supports on which the bending force acts at least initially in the central plane of symmetry until the straightening rollers are straight due to the deflection of the crossheads. With a given bending stiffness of the crossheads, the deflection is thus optimal. However, the size of the preset V-shape of the divided crossheads also depends on the degree of deflection.
the straightening rollers should now bear against the groups of support rollers, which are likewise V-shaped, under idling conditions, the straightening rollers must also be pre-bent in a V-shape by forces acting on their ends. Since the extent of the straightening roller pre-bending due to the strong kink position and the groups of support rollers to the right and left of the central vertical transverse plane of the crossheads must be considerable, the straightening rollers - until they are bent under the straightening force - are subjected to considerable bending stress.
the invention has for its object to improve the known "Kippjochtex" in a straightening machine for sheets and strips in such a way that the straightening rollers have to be less pre-bent before the straightening force occurs, i. H. the straightening rollers are treated more gently.
the crossheads are made in one piece in a conventional manner, the interchangeable cassettes no longer being made in two parts, but instead being made in three parts by two intermediate joints each with a central part which is divided into two Spaced rigid supports supported on the associated crosshead.
this leads to improved bending behavior of the one-piece crossheads, which can thus be carried out more easily.
the actuating devices which represent limit stops to a certain extent, consist expediently of adjusting wedges which extend transversely to the straightening rollers and which, in any adjustment position, extend over the length of the cassette, as seen in the direction of advance of the straightened material, the cassettes being counter-tensioned by tension members attached to the associated crosshead the rigid supports and the adjustment wedges are pressed on.
These prestressed tension members represent a kind of balancing, at least for the upper cassette, in that not only the middle part is pressed against the two rigid supports on the crosshead, but also the outer side parts are pressed against the adjustment wedges in their upward pivoting position before straightening under idle conditions .
the straightening rollers already under idle conditions i. H. diverging pairs of upper and lower side parts, along with support rollers, also rest on the outer support rollers, thereby avoiding blows when the straightening material enters the roller arrangement.
the "Double Chock Bending" system known from rolling mill construction is used in rolling mill construction applied, d. H. the bearing housings are under bending moments which the upper straightening rollers at their ends upwards and the lower straightening rollers at their ends downwards, i. H. bend against the recessed outer support rollers carried by the diverging side part pairs.
the bending moments are generated by internal second preloaded tension members, which are connected to the bearing housings in a tensile manner, and by external preloaded pressure members, so that a pair of forces acts on each bearing housing, which bends the straightening rollers at the ends as described.
the cassette together with the support rollers and the associated straightening rollers constitute a coherent structural unit which can be removed axially for changing the straightening rollers.
exchangeable cassettes are created, which can be removed together with the associated straightening rollers, for which purpose, according to claim 4, the tensile connections between the transversely tensioned tension members and the box-shaped cassettes can be released, as described in the drawing description is explained.
the main components of the straightening machine partially shown in FIG. 1 are two pairs of stand-like frames 1, of which only the outlet-side frame can be seen in FIG. 1 when the direction of advance of the straightening good runs in the viewing direction.
Extending between the frame parts are an upper and a not shown lower rigid crosshead 2, on which the straightening rollers 3, which are offset in the feed direction and are supported in bearing housings 4, are ultimately supported.
the straightening rolls 3 are driven in a manner not shown via the pins 5 on the left, so that the removal side for changing the rolls is on the right in the drawing.
the crossheads 2 can be adjusted up and down by four adjusting devices 6 in order to influence the relative position of the upper and lower straightening rollers 3 offset from one another transversely to the direction of advance of the straightening material.
the crossheads 2 and thus the straightening rollers 3 are set on the inlet side to a larger overstretching amount than on the outlet side, ie the crossheads 2 are set to be somewhat divergent in the feed direction.
the bearing blocks 12 for a group of support rollers 13 are supported by the central part 7a, each supporting a straightening roller 3.
the side part 7b carries bearing blocks 14 for two further support rollers 15 for each straightening roller 3, and the side part 7a carries bearing blocks 16 for two further support rollers 17.
the straightening machine thus comprises three groups of support rollers 13, 15 and 17, of which the outer groups 15 and 17 can be adjusted independently of the central group of support rollers 13 by the articulated connection of the side parts 7b, 7c to the central part 7a.
all support rollers 13, 15, 17 are arranged in the vertical axis plane of the straightening rollers 3. This requires that the chocks 4 of the straightening rollers are fixed in position in the horizontal plane, for example in that adjacent bearing housings 4 abut one another.
each straightening roller is supported in a saddle-like manner by means of a V-shaped arrangement of support rollers and is thus fixed in the horizontal plane.
the middle part 7a is supported in the region of its ends symmetrically to the central transverse plane Q of the rigid crosshead 2 and the straightening rollers 3 via two rigid supports 20 which are arranged at a relatively large distance from one another and which distribute the straightening force transmitted by the support rollers 13 in a relatively broad distribution into the crosshead 2 transfer, which has a favorable influence on the deflection of the crosshead.
Rigid webs 2a of crosshead 2 are expediently assigned to rigid supports 20 in their vertical planes.
Each outer side part 7b, 7c of the non-rigid cassette 7 is assigned in the region of the outermost support rollers 15, 17 an adjusting device 21 or 22 which limits the pivoting position of the side part with respect to the crosshead 2.
the adjusting devices consist of adjusting wedges 21a, 22a extending transversely to the leveling rollers 3, which in each adjustment position extend over the length of the cassette 7 - seen in the direction of advance of the leveling material - and are supported on counter wedges 21b, 22b fixed in the crosshead 2.
the cassette 7 is pressed against the rigid supports 20 and the adjusting wedges 21a, 22a by prestressed first tension members 23, 24 and 25 which are fixed to the crosshead 2. This is imperative for the upper cassette 7 for reasons of balancing, but is also provided for the lower cassette for reasons of stabilization, for the following reason as far as the outer elastic tension members 24 and 25 are concerned:
Fig. 1 namely, the cassette 7 is shown in the straight stretched position, which it is supposed to take under consideration of the deflection of the crosshead 2 under the directional force. Without this deflection, i.e.
FIG. 4 shows, in solid lines, schematically the bending position of the side parts 7b and 7c relative to the middle part 7a under idle conditions. The same representation also applies to the lower part of the machine. It is expedient that the side parts 7b and 7c of the lower cassette are also held pressed by (then directed downwards) tensile forces on the lower adjusting wedges 21a, 22a, so that the pairs of side parts 7b and 7c lying one above the other diverge by the same angle.
the bearing housings 4 are pulled at their inner ends facing the straightening rollers 3 by prestressed second tension members 26 in the direction of the side parts 7b and 7c and pressed at their outer ends by prestressed pressure members 27, the tension members 26 and the pressure members 27 are both supported on the side parts 7b and 7c of the cassette 7.
packets of disc springs are used which act on tie rods 26a and push rods 27a.
the tie rods 26a are connected to the bearing housings 4 in a tensile manner.
the construction of the straightening rollers 3 to the right for regrinding the straightening rollers is possible in the construction according to FIG. 1 in a conventional manner if the tensile connections between the tension rods 26a of the prestressed tension members 26 are released and the pressure rods 27a of the elastic ones Pressure members 27 are released.
the manual work associated with this can, however, be avoided if the entire cassette 7, including support rollers and upper and lower rollers, is designed as an exchangeable cassette.
the tension members 23, 24 and 25 are designed as piston-cylinder units, the pistons 30 of which are spring-loaded in the pulling direction by plate springs 31 and can be acted upon by a pressure medium in the opposite direction.
the piston rods 32 (FIG.
elongated holes 33 pass through the outer wall of the box-shaped cassette parts in elongated holes 33 and are provided at the free ends with collars 34 which transmit the tensile force.
the elongated holes 33 are expanded against the direction of removal A of the cassette to a diameter B which is larger than the diameter of the collar 34.
the crosshead 2 is raised or lowered by the adjusting devices 6, so that the upper or lower Cassette 7 together with the parts connected to it can be removed.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Straightening Metal Sheet-Like Bodies (AREA)
Structure Of Belt Conveyors (AREA)
Delivering By Means Of Belts And Rollers (AREA)

EP87118938A 1987-01-10 1987-12-21 Richtmaschine für Bleche und Bänder Expired - Lifetime EP0274722B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT87118938T ATE67696T1 (de)	1987-01-10	1987-12-21	Richtmaschine fuer bleche und baender.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19873700555 DE3700555A1 (de)	1987-01-10	1987-01-10	Richtmaschine fuer bleche und baender
DE3700555		1987-01-10

Publications (3)

Publication Number	Publication Date
EP0274722A2 EP0274722A2 (de)	1988-07-20
EP0274722A3 EP0274722A3 (en)	1989-12-20
EP0274722B1 true EP0274722B1 (de)	1991-09-25

Family

ID=6318640

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87118938A Expired - Lifetime EP0274722B1 (de)	1987-01-10	1987-12-21	Richtmaschine für Bleche und Bänder

Country Status (6)

Country	Link
US (1)	US4811586A (es)
EP (1)	EP0274722B1 (es)
JP (1)	JPS63180324A (es)
AT (1)	ATE67696T1 (es)
DE (2)	DE3700555A1 (es)
ES (1)	ES2025131B3 (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4216686A1 (de) *	1992-05-21	1993-11-25	Schloemann Siemag Ag	Verfahren und Richtmaschine zum Richten von Blechen und Bändern
DE4218138A1 (de) *	1992-06-02	1993-12-09	Schloemann Siemag Ag	Walzenanstellvorrichtung
DE4308744A1 (de) *	1993-03-19	1994-09-22	Schloemann Siemag Ag	Richtmaschine, insbesondere zum Richten von Blechen und Bändern
DE4333880C2 (de) *	1993-10-05	2003-03-06	Sms Demag Ag	Rollenlagerung
US5461895A (en) *	1993-12-09	1995-10-31	Danieli United, Inc.	High capacity hydraulic leveller
FR2732912A1 (fr) *	1995-04-14	1996-10-18	Clecim Sa	Planeuse a rouleaux imbriques
FR2718661B1 (fr) *	1994-04-15	1996-07-12	Clecim Sa	Installation de planage d'une bande métallique.
FR2732913B1 (fr) *	1995-04-14	1999-06-11	Clecim Sa	Planeuse a rouleaux imbriques et procede de mise en oeuvre d'une telle planeuse
US7637132B2 (en) *	2006-02-06	2009-12-29	Butech Bliss	Work roll scraper for roller levelers
DE202007015406U1 (de) *	2007-09-27	2008-02-14	Kohler Maschinenbau Gmbh	Wechselkassettenanordnung für eine Richtmaschine und Richtmaschine
CN103551437B (zh) *	2013-10-31	2016-08-17	武汉钢铁(集团)公司	一种微应力百米高速重轨生产方法
DE102015216387A1 (de) *	2015-08-27	2017-03-02	Sms Group Gmbh	Richtmaschine mit modular aufgebautem Wechselkassettensystem
CN113877988A (zh) *	2021-10-14	2022-01-04	中冶南方工程技术有限公司	矫直机弯辊调整装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB326033A (en) *	1929-03-21	1930-03-06	Ungerer Fritz	An adjustable supporting mechanism for straightening rolls of plate straightening machines
DE631997C (de) *	1934-01-16	1936-07-01	Sack Gmbh Maschf	Blechrichtmaschine
GB432258A (en) *	1935-02-11	1935-07-23	Friedrich Karl Maeussnest	Improvements in sheet and plate straightening machine
US2132426A (en) *	1935-09-04	1938-10-11	Hedweg Maussnest	Method and apparatus for straightening sheet material
US2219163A (en) *	1937-04-30	1940-10-22	Friedrich K Maussnest	Sheet straightening machine
US2429142A (en) *	1944-05-12	1947-10-14	Youngstown Foundry And Machine	Roller leveler machine
US2491782A (en) *	1948-07-26	1949-12-20	United Eng Foundry Co	Apparatus for straightening strip material
US2945530A (en) *	1955-11-04	1960-07-19	Frederick K Maust	Method of treating sheet and strip material
US2949147A (en) *	1955-12-30	1960-08-16	Frederick K Maust	Roller leveler with driven backup rolls
US3301031A (en) *	1964-06-23	1967-01-31	Voss Engineering Company	Roller leveler
GB1210674A (en) *	1967-11-21	1970-10-28	Davy & United Eng Co Ltd	Apparatus for processing sheet and strip material
DE2747331C2 (de) *	1977-10-21	1982-07-22	SMS Schloemann-Siemag AG, 4000 Düsseldorf	Vorrichtung zum Verstellen von Stützrollen
DE2824217A1 (de) *	1978-06-02	1979-12-06	Schloemann Siemag Ag	Richtmaschine fuer bleche und baender
AT365485B (de) *	1980-02-21	1982-01-25	Voest Alpine Ag	Vorrichtung zum abstuetzen einer arbeitswalze einer blechbiege- oder -richtmaschine
US4454738A (en) *	1981-06-29	1984-06-19	The Paxson Machine Company	Roller leveler and method of operating same
DE3337957A1 (de) *	1983-10-19	1985-05-02	SMS Schloemann-Siemag AG, 4000 Düsseldorf	Blechrichtmaschine

1987
- 1987-01-10 DE DE19873700555 patent/DE3700555A1/de not_active Withdrawn
- 1987-12-21 EP EP87118938A patent/EP0274722B1/de not_active Expired - Lifetime
- 1987-12-21 ES ES87118938T patent/ES2025131B3/es not_active Expired - Lifetime
- 1987-12-21 AT AT87118938T patent/ATE67696T1/de active
- 1987-12-21 DE DE8787118938T patent/DE3773360D1/de not_active Expired - Lifetime
1988
- 1988-01-07 JP JP63000797A patent/JPS63180324A/ja active Pending
- 1988-01-11 US US07/142,503 patent/US4811586A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
EP0274722A2 (de)	1988-07-20
ATE67696T1 (de)	1991-10-15
DE3700555A1 (de)	1988-07-21
EP0274722A3 (en)	1989-12-20
DE3773360D1 (de)	1991-10-31
US4811586A (en)	1989-03-14
JPS63180324A (ja)	1988-07-25
ES2025131B3 (es)	1992-03-16

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EP0005760B1 (de)	1982-10-20	Richtmaschine für Bleche und Bänder
EP0274722B1 (de)	1991-09-25	Richtmaschine für Bleche und Bänder
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DE69512758T2 (de)	2000-04-06	Verfahren und Vorrichtung zum Führen von Rundstahlstäben
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DE2038114A1 (de)	1971-02-18	Verbesserte Richtmaschine fuer Formstahlstuecke
DE3308673A1 (de)	1984-09-20	Mehrwalzengeruest
DE2747331A1 (de)	1979-04-26	Vorrichtung zum verstellen von stuetzrollen
DE19705457B4 (de)	2006-01-12	Blechrichtmaschine
DE69924466T2 (de)	2005-09-01	Abstreifvorrichtung für flüssigkeiten
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DE202019005662U1 (de)	2021-05-07	Richtaggregat für eine Walzen-Richtmaschine
AT390741B (de)	1990-06-25	Walzwerk, insbesondere kaltwalzwerk