EP0572829B1 - Dispositif de serrage des cylindres - Google Patents

Dispositif de serrage des cylindres Download PDF

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Publication number
EP0572829B1
EP0572829B1 EP93107709A EP93107709A EP0572829B1 EP 0572829 B1 EP0572829 B1 EP 0572829B1 EP 93107709 A EP93107709 A EP 93107709A EP 93107709 A EP93107709 A EP 93107709A EP 0572829 B1 EP0572829 B1 EP 0572829B1
Authority
EP
European Patent Office
Prior art keywords
adjusting device
roll
piston
adjusting
cylinder
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.)
Expired - Lifetime
Application number
EP93107709A
Other languages
German (de)
English (en)
Other versions
EP0572829A1 (fr
Inventor
Willi Benz
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
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.)
Filing date
Publication date
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0572829A1 publication Critical patent/EP0572829A1/fr
Application granted granted Critical
Publication of EP0572829B1 publication Critical patent/EP0572829B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
    • 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
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting

Definitions

  • the invention relates to a roller adjustment device with hydraulic adjustment cylinders of a straightening machine for sheets and strips with offset upper and lower straightening rollers, which are supported over their length by means of cross-braces supported in turn, arranged in roller mills, at least the upper crossbar for positioning the straightening rollers is and in the cylinder space of each adjusting cylinder two pistons which can be acted upon independently of one another and which carry out an overall stroke with a small working stroke and a large idle stroke are arranged.
  • a roll adjusting device for the adjustment of the rolls of a roll stand, which has two pistons which can be acted upon independently of one another in a positioning cylinder and which on the one hand allows the rolls to be widely separated with a large idle stroke and on the other hand to keep the working stroke of the rollers small in operation.
  • the invention has for its object to make a roller adjustment device of the type mentioned reliable, especially in the event of anomalies such as in the case of tilting movements of the upper crossbar of a straightening machine.
  • the lower piston executing the working stroke has an extension designed as an adjusting piston rod and the adjusting piston rods are supported on a hydraulic cushion by spherical bearings.
  • the adjusting cylinders misalignments are possible without the disadvantageous chatter marks of the self-locking spherical bearings, both with the small adjusting strokes by means of the lower piston and with working strokes of both pistons that add up to the total stroke.
  • the upper crossmember can be tilted transversely in the direction of sheet travel. If the positioning cylinders are advantageously connected to one another in terms of control technology via measuring sensors, parallel positioning can be achieved.
  • the spherical bearing consists of a pair of spherical spheres which lie against one another and which is arranged between a cover and a base plate facing the flat piston of the hydraulic cushion and extending upwards over the adjusting piston rod.
  • the adjusting piston rod is thus movably connected to the crossbar via a spherical suspension.
  • the pressure medium (oil) acting on the flat piston from below lifts the installation unit (flat piston, base plate, etc.) up to the stop position of the suspension so that the components lie against each other without play.
  • the hydraulic cushion / the flat piston is connected to an accumulator and a pressure measuring device and a controlled check valve are arranged in the accumulator line.
  • the controlled check valve opens and thus enables the spring forces to relax. Any leaks are compensated for by replenishing pressure medium from the accumulator.
  • the machine frame is formed by two stands 2, 3 anchored to the foundation, which are rigidly connected by an upper frame cross member 4a and a lower and upper crossbar 4, 5.
  • An upper roller mill 6 is held on the upper crossbar 4; a lower roller mill 7 is movably arranged on the lower crossbar 5.
  • the upper crossmember can be adjusted against the lower crossmember 5 by means of the setting cylinder 10; each arranged on the inlet and outlet sides at the corners and thus a total of four positioning cylinders 10 engage the upper crossmember 4.
  • Roller positioning wedges 8 are mounted on the lower roller mill 7 and can be displaced by one pressure medium cylinder 9 each.
  • a bearing carrier wedge 11 for lower straightening rollers 12 and support rollers 13 associated therewith is supported on each wedge 8; webs 14 are arranged between the support rollers 13.
  • several upper straightening rollers 15 are supported on their bales, namely by means of support rollers 17, which are located between webs 16.
  • the upper straightening and support rollers 15, 17 are mounted on a bearing carrier wedge 18.
  • Each of the adjacent bearing bracket keys 18 is supported on a wedge 21, the other side of which rests on the upper roller mill 6.
  • the adjusting wedges 21 can be displaced by one pressure medium cylinder 22 each.
  • the upper and lower straightening rollers 15, 12 are individually driven and connected to a drive (not shown) via cardan shafts 23.
  • the adjusting cylinders 10 are formed with a divided total stroke, which is composed of an idle stroke 24 and a working stroke 25.
  • an upper piston 26 and a lower piston 27 are arranged in the cylinder space 34 of the positioning cylinder 10 for this purpose, which can be acted upon independently of one another.
  • the lower piston 27 executes the working stroke 25; it is extended downwards by an adjusting piston rod 28, which has a spherical bearing 29 at its lower end (cf. FIG. 2).
  • a cylinder cover 33 placed on the cylinder housing 31 and fastened with cylinder screws 32 arranged on a circle closes off the cylinder chamber 34 at the top.
  • a sealing plate 36 delimiting the pressure chamber 35 for the upper piston 26 is arranged below the cylinder cover 33. This serves at the same time for guiding supply pipes 37, 38 penetrating the cylinder cover 33, via which the pressure medium (oil) flows into the upper and lower pressure chambers 35 and 39, respectively.
  • the supply pipe 37 assigned to the upper or idle stroke pressure chamber 35 ends in the sealing plate 36, while the supply pipe 38 assigned to the lower or working stroke pressure chamber 39 dips into a through bore 41 of the upper piston 26.
  • the feed pipe 38 is of such a length that in the position of the upper piston 26 shown in FIG. 3, in which it rests against a lower fixed stop 42 in the form of an annular inner collar of the cylinder housing, it is at a distance corresponding to the path of the idle stroke 24 the mouth 43 of the through hole 41 ends.
  • the upper piston 26 is moved with excess force against the fixed stop 42, so that the oil column in the upper pressure chamber 35 is no longer subject to oil elasticity.
  • both feed pipes 37, 38 i.e. associated valves, not shown, are opened.
  • the pistons 26 and 27 can then move upward in the direction of arrow 44, the oil displaced from the pressure chambers 39 and 35 escaping via the feed lines 37, 38.
  • the adjusting piston rods 28 of the adjusting cylinders 10, which have the spherical bearing 29 at their lower ends, are - as shown in FIG. 2 - supported on a hydraulic cushion 45, which is formed under a flat piston 46 arranged in the crossbar 4.
  • the hydraulic cushion 45 is connected via an accumulator line 47 to an accumulator 48 which is preceded by a pressure measuring device 49 and a controlled check valve 51 in the accumulator line 47. Due to the support of the flat piston 46 via the hydraulic cushion 45, the transverse crossbeam 4 can be tilted relative to the adjusting piston rods 28 without these having a disadvantageous effect on a pair of spherical caps 54 consisting of two individual parts 52, 53 facing one another with spherical surfaces.
  • the pair of calottes 54 is arranged on a tie bolt 56, which is screwed into the adjusting piston rod 28 on the one hand and in the crossbar 4 on the other hand and is surrounded by a bush 55, between a cover 57 and a base plate 58 facing the flat piston 46 and extending upwards over the adjusting piston rod 28.
  • a split ring 59 screwed to the base plate 58 ultimately establishes the coupling to the crossbar 4.
  • the one on the pair of calottes 54 put on cover 57 is acted upon by a spring assembly 61, which acts on a nut 63 screwed onto the tension bolt 56 via a pressure ring 62.
  • the base plate 58 with the pair of caps 54 lifts up to the stop position of the spherical suspension against the cover 57 acted upon from the other side by the plate spring assembly 61.
  • the crossbar 4 can also be tilted.
  • the pair of calottes 54 is thus firmly clamped, although inclined positions of the crossbar with respect to the adjusting piston rods 28 are possible via the rounded surfaces lying against one another.
  • the check valve 51 opens so that the excess amount of pressure medium can flow out until the plate spring assemblies 61 are relaxed as far as they will go.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (8)

  1. Dispositif de serrage de cylindres équipé de vérins de positionnement (10), pour une machine à dresser des plaques et feuillards comportant des cylindres de dressage supérieur et inférieur (12,15) décalés l'un par rapport à l'autre qui sont supportés, sur leur longueur, moyennant des galets d'appui (13, 17) logés sur un ratelier à galets (6,7) et appuyés sur des traverses transversales (4,5), au moins la traverse transversale supérieure (4) étant réglable en vue du positionnement des cylindres de dressage, et deux pistons (26,27) commandables indépendemment l'un de l'autre et effectuant une course totale composée d'une petite course efficace et d'une grande course à vide étant agencés dans le cylindre (34) de chaque vérin de positionnement (10), caractérisé en ce que
    le piston inférieur (27) qui effectue la
    course efficace (25) présente une extension sous forme de tige de piston de positionnement (28) et en ce que les tiges de piston de positionnement (28) prennent appui sur un coussin hydraulique (45) par l'intermédiaire de paliers à calottes (29).
  2. Dispositif de serrage de cylindres selon la revendication 1 caractérisé en ce que le palier à calottes (29) comporte une paire de calottes (54) dont les pièces (52,53) sont en contact par les surfaces sphériques et qui est agencée entre un couvercle (57) et une plaque de socle (8) orientée vers un piston plat (46) du coussin hydraulique (45), et entourant vers le haut la tige de piston de positionnement.
  3. Dispositif de serrage de cylindres selon la revendication 1 ou 2 caractérisé en ce que la plaque de socle (5O) est reliée à la traverse transversale (4) par l'intermédiaire d'une bague en plusieurs parties.
  4. Dispositif de serrage de cylindres selon l'une des revendications 1 à 3 caractérisé par un paquet de ressorts (61) qui agit sur le couvercle (57).
  5. Dispositif de serrage de cylindres selon la revendication 4 caractérisé en ce que le paquet de ressorts (61) est agencé entre une bague de pression (62) et le couvercle (57).
  6. Dispositif de serrage de cylindres selon l'une des revendications 1 à 5 caractérisé en ce que le coussin hydraulique (45) est raccordé à un accumulateur (48) et en ce qu'un dispositif de mesure de pression (49) et une vanne anti-retour commandée (51) sont agencés dans la conduite (47) de l'accumulateur.
  7. Dispositif de serrage de cylindres selon l'une des revendications 1 à 6 caractérisé en ce que les vérins de positionnement (10) sont reliés l'un à l'autre du point de vue régulation par des capteurs de mesure.
  8. Dispositif de serrage de cylindres selon l'une des revendications 1 à 7 caractérisé en ce que la traverse supérieure (4) est basculable transversalement par rapport à la direction de passage des feuillards, dans les limites du jeu de guidage du piston plat (46).
EP93107709A 1992-06-02 1993-05-12 Dispositif de serrage des cylindres Expired - Lifetime EP0572829B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4218138 1992-06-02
DE4218138A DE4218138A1 (de) 1992-06-02 1992-06-02 Walzenanstellvorrichtung

Publications (2)

Publication Number Publication Date
EP0572829A1 EP0572829A1 (fr) 1993-12-08
EP0572829B1 true EP0572829B1 (fr) 1996-08-14

Family

ID=6460207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93107709A Expired - Lifetime EP0572829B1 (fr) 1992-06-02 1993-05-12 Dispositif de serrage des cylindres

Country Status (4)

Country Link
EP (1) EP0572829B1 (fr)
AT (1) ATE141194T1 (fr)
DE (2) DE4218138A1 (fr)
ES (1) ES2091519T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111451284A (zh) * 2020-04-22 2020-07-28 山东钢铁集团日照有限公司 一种热轧精轧机支撑辊平衡系统液压平衡回路改善方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103008400A (zh) * 2012-12-03 2013-04-03 太原重工股份有限公司 一种伸缩旋转液压装置及液压锁紧装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285972B (de) * 1966-05-27 1969-01-02 Neumann Ohg Richtwalzen-Antrieb fuer Blech-Richtmaschinen
GB1216546A (en) * 1968-02-09 1970-12-23 Paterson Candy Internat Ltd Three-position ram
DE3700555A1 (de) * 1987-01-10 1988-07-21 Schloemann Siemag Ag Richtmaschine fuer bleche und baender
DE3939124A1 (de) * 1989-11-25 1991-05-29 Sundwiger Eisen Maschinen Vielwalzengeruest mit hydraulischer anstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111451284A (zh) * 2020-04-22 2020-07-28 山东钢铁集团日照有限公司 一种热轧精轧机支撑辊平衡系统液压平衡回路改善方法

Also Published As

Publication number Publication date
DE4218138A1 (de) 1993-12-09
DE59303409D1 (de) 1996-09-19
EP0572829A1 (fr) 1993-12-08
ES2091519T3 (es) 1996-11-01
ATE141194T1 (de) 1996-08-15

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