US3398564A - Arrangement for counter-balancing the working rollers of a roller stand - Google Patents

Arrangement for counter-balancing the working rollers of a roller stand Download PDF

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US3398564A
US3398564A US384691A US38469164A US3398564A US 3398564 A US3398564 A US 3398564A US 384691 A US384691 A US 384691A US 38469164 A US38469164 A US 38469164A US 3398564 A US3398564 A US 3398564A
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rollers
working rollers
piston
arrangement
bearing blocks
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Expired - Lifetime
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US384691A
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Barten Ernst Heinrich
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Achenbach Buschhetten GmbH and Co KG
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Achenbach Buschhetten GmbH and Co KG
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    • 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
    • B21B31/203—Balancing rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends

Definitions

  • the present invention concerns a roller stand comprising two working rollers and two backing rollers therefor.
  • Two pairs of bearing blocks for the working rollers are respectively slidably supported by two supporting means for the backing rollers
  • the arrangement furthermore comprises two pairs of double acting fluid operable cylinder piston means respectively operatively connected to said two pairs of bearing blocks and operable respectively to positively adjust said pairs of bearing blocks independently of each other toward and away from each other while each of said double acting cylinder piston means comprises a single cylinder only which is movable in opposite directions with regard to the respective adjacent supporting means and also comprises a single double acting piston stationarily arranged with regard to the respec tive adjacent supporting means and extending into the cylinder pertaining thereto.
  • This invention relates to an arrangement for counterbalancing the working rollers of a roller stand, particularly a roller stand such as a four-high stand having backing up rollers on opposite sides of the working rollers. More particularly still, the present invention relates to a special arrangement of the balancing cylinders pertaining to the working rollers.
  • Roller frames of the general type the present invention is concerned with which include devices for lifting and lowering the upper rollers and in which the fluid opreated balancing pistons act on tiltable thrust members arranged in window-like openings of a bearing block.
  • the arrangement includes thrust elements operated by the pistons and having nose pieces, or the like, in engagement with recesses formed in the bearing blocks for the working rollers for exerting forces on the bearing blocks.
  • the bearing blocks for the working rollers are connected to tiltable levers against which bear piston rods of pistons in the bearing blocks for the back up rollers.
  • FIGURE 1 is a'vertical sectional view somewhat schematic showing a four-high roller stand constructed according to this invention and showing the control piston and cylinder arrangements at one end of the stand;
  • FIGURE 2 is a schematic view showing the working rollers bent so as to be concave toward each other;
  • FIGURE 3 is a view similar to that of FIGURE 2 showing the rollers bent so as to be convex toward each other.
  • the present invention is based on a device for balancing the working rollers of a four-high stand with balancing cylinders arranged in the lateral portions or legs of the bearing blocks for the back up rollers.
  • the cylinder-piston devices are provided. with extensions which are effective in both directions of adjustment of the bearing blocks for the working rollers and which, in a manner known per se engage recesses in the said bearing blocks. Both end faces ofthe pistons are adapted for receiving fluid pressure and the pistons are, therefore, double acting.
  • Blocks 3 and 4 have their opposite side faces provided with recesses 9 for receiving projections on the piston rods of the actuating cylinder piston systems.
  • the lateral leg portions 10 on bearing blocks 3 and 4 have bores formed therein and mounted in the bores are guiding piston sleeves or bushings 11 in which pistons 12 are reciprocably mounted.
  • Each piston 12 has a lateral projection 13 engaging one of the aforementioned recesses 9.
  • Each piston 12 is hollow and has an inner chamber in which is stationarily arranged a piston 15 that divides the said chamber into the two fluid pressure chamber sections I and II. These pressure chambers communicate through the piston rod 16 connected to piston 15 with respective fluid inlet and outlet conduits 17 and 18. Piston rod 16 is fixed to the pertaining one of bearing blocks 3, 4 to hold piston 15 stationary.
  • piston 12 is relatively long so that tilting of the piston in its guiding cylinder sleeve 11 is substantially prevented.
  • Chamber I, II in being located in piston 12, does not occupy space which is required for the bearing blocks forming a part of the structure.
  • FIGURE 2 the arrows 12 show the direction and location of the thrust of pistons 12 on the supporting shaft ends 7' and 8 of the rollers 7 and 8.
  • each cylindenpiston system permits an adjusting movement of the pertaining bearing block for the working rollers in respectively opposite directions soras to control the formation of the roller gap between the working rollers.
  • each bearing block of which there is one at each end of each working roller, requires two cylinders and pistons only, whereby the total number of pistons and cylinders is reduced by at least a third over heretofore known arrangements with an accompanying reduction in the conduits and control valves requires, and the like.
  • the invention has for its purpose the bending of the working rollers to produce a predetermined shape in cross section of material passed between the rollers.
  • This predetermined shape might be perfectly uniform in thickness across its entire width, and in which case, the bending of the rollers is done to offset the counter bending thereof that occurs when work is passed between the rollers.
  • a roller stand which comprises in combination:
  • double acting piston stationarily arranged with regard to the respective adjacent su porting means and extending into the cylinderpertaining thereto, and means respectively associated with said pairs of fluid operable cylinder piston means for supplying pressure fluid selectively mom or the other side of the respective piston pertaining thereto.
  • a roller stand according to claim 1 in which each of said cylinders and the respective bearing blocks pertaining thereto positively interengage each other by protrusions and recesses.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Description

Aug. 27, 1968 E. H. BARTEN 3,
ARRANGEMENT FOR COUNTER-BALANCING THE WORKING ROLLERS OF A ROLLER STAND Filed July 23, 1964 United States Patent ARRANGEMENT FOR COUNTER-BALANCING THE WORKING ROLLERS OF A ROLLERSTAND Ernst Heinrich Barteu, Buschhutten, Germany, assignor to Achenbach Sohne G.m.b.H., Buschhutten, Germany Filed July 23, 1964, Ser. No. 384,691 Claims priority, application Germany, July 29, 1963,
A 43,699 2 Claims. (Cl. 72-243) ABSTRACT OF THE DISCLOSURE" The present invention concerns a roller stand comprising two working rollers and two backing rollers therefor. Two pairs of bearing blocks for the working rollers are respectively slidably supported by two supporting means for the backing rollers, The arrangement furthermore comprises two pairs of double acting fluid operable cylinder piston means respectively operatively connected to said two pairs of bearing blocks and operable respectively to positively adjust said pairs of bearing blocks independently of each other toward and away from each other while each of said double acting cylinder piston means comprises a single cylinder only which is movable in opposite directions with regard to the respective adjacent supporting means and also comprises a single double acting piston stationarily arranged with regard to the respec tive adjacent supporting means and extending into the cylinder pertaining thereto.
This invention relates to an arrangement for counterbalancing the working rollers of a roller stand, particularly a roller stand such as a four-high stand having backing up rollers on opposite sides of the working rollers. More particularly still, the present invention relates to a special arrangement of the balancing cylinders pertaining to the working rollers.
Roller frames of the general type the present invention is concerned with are known which include devices for lifting and lowering the upper rollers and in which the fluid opreated balancing pistons act on tiltable thrust members arranged in window-like openings of a bearing block.
The arrangement includes thrust elements operated by the pistons and having nose pieces, or the like, in engagement with recesses formed in the bearing blocks for the working rollers for exerting forces on the bearing blocks.
In a similar arrangement, the bearing blocks for the working rollers are connected to tiltable levers against which bear piston rods of pistons in the bearing blocks for the back up rollers.
The various devices known in the prior art all provide that the working rollers have their ends pressed against each other so that only a concave bend of the rollers with respect to each other is obtained. Such a concave bend requires two additional cylinders and pistons for each of the four bearing blocks of the two working rollers.
If, on the other hand, it is desired additionally to impart upon the working rollers a bend of the rollers which is convex with regard to the roller gap, it is necessary to provide two additional cylinders and piston systems for each bearing block.
From the foregoing, it will be seen that for the purpose of obtaining selective bending of the rollers to form either a convex or concave gap, a total of 12 cylinders and pistons and attendant hydraulic lines and control devices, are required.
With the foregoing in mind, it is a primary object of the present invention to provide devices for counter-bal- "ice ancing the working rollers of a four-high roller stand in which the number of cylinders and pistons required for effecting selective bending of the working rollers is substantially reduced.
It is also an object to provide means for bending the working rollers in either direction with a minimum number of piston-cylinder systems.
'Another object of. the present invention is the provision of an arrangement of the nature referred to which will-be extremely simple and compact in construction, but nevertheless, highly efficient and reliable.
These and other objects and advantages of the present invention will become more clearly apparent upon reference to the following specification, taken in connection with the accompanying drawings, in which:
FIGURE 1 is a'vertical sectional view somewhat schematic showing a four-high roller stand constructed according to this invention and showing the control piston and cylinder arrangements at one end of the stand;
FIGURE 2 is a schematic view showing the working rollers bent so as to be concave toward each other; and
FIGURE 3 is a view similar to that of FIGURE 2 showing the rollers bent so as to be convex toward each other. I
In general, the present invention is based on a device for balancing the working rollers of a four-high stand with balancing cylinders arranged in the lateral portions or legs of the bearing blocks for the back up rollers.
According to the present invention, the cylinder-piston devices are provided. with extensions which are effective in both directions of adjustment of the bearing blocks for the working rollers and which, in a manner known per se engage recesses in the said bearing blocks. Both end faces ofthe pistons are adapted for receiving fluid pressure and the pistons are, therefore, double acting.
- Referring to the drawings, somewhat more in detail, there is shown therein a housing H of a four-high roller stand. Back up rollers 1 and 2 are journalled in bearing blocks 3 and 4 in a known manner. Moveably mounted in rectangular recesses in bearing blocks 3 and 4 are bearing blocks 5 and 6 for the working rollers 7 and 8.
Blocks 3 and 4 have their opposite side faces provided with recesses 9 for receiving projections on the piston rods of the actuating cylinder piston systems.
The lateral leg portions 10 on bearing blocks 3 and 4 have bores formed therein and mounted in the bores are guiding piston sleeves or bushings 11 in which pistons 12 are reciprocably mounted. Each piston 12 has a lateral projection 13 engaging one of the aforementioned recesses 9. Each piston 12 is hollow and has an inner chamber in which is stationarily arranged a piston 15 that divides the said chamber into the two fluid pressure chamber sections I and II. These pressure chambers communicate through the piston rod 16 connected to piston 15 with respective fluid inlet and outlet conduits 17 and 18. Piston rod 16 is fixed to the pertaining one of bearing blocks 3, 4 to hold piston 15 stationary.
It will be apparent that piston 12 is relatively long so that tilting of the piston in its guiding cylinder sleeve 11 is substantially prevented. Chamber I, II, in being located in piston 12, does not occupy space which is required for the bearing blocks forming a part of the structure.
When sections II are subjected to fluid under pressure while sections I are exhausted, pistons 12 are urged toward each other, and this will result in a concave bending of the working rollers 7 and 8 as illustrated in FIGURE 2.
In FIGURE 2 the arrows 12 show the direction and location of the thrust of pistons 12 on the supporting shaft ends 7' and 8 of the rollers 7 and 8.
When, on the other hand, if pressure fluid is conveyed into sections I, while sections II are exhausted, pistons 12 are urged away from each other and this concave bending of therollers 7 and 8, as illustrated in FIGURE 3 and wherein the arrows 12" indicate the direction and location of the thrust of pistons 12 on the supporting shaft ends 7' and 8' of working ro1lers.7 and 8.
From the foregoing, it will be appreciated that each cylindenpiston system permits an adjusting movement of the pertaining bearing block for the working rollers in respectively opposite directions soras to control the formation of the roller gap between the working rollers.,For this purpose each bearing block, of which there is one at each end of each working roller, requires two cylinders and pistons only, whereby the total number of pistons and cylinders is reduced by at least a third over heretofore known arrangements with an accompanying reduction in the conduits and control valves requires, and the like.
It will be understood that the invention has for its purpose the bending of the working rollers to produce a predetermined shape in cross section of material passed between the rollers. This predetermined shape might be perfectly uniform in thickness across its entire width, and in which case, the bending of the rollers is done to offset the counter bending thereof that occurs when work is passed between the rollers.
It will be understood that this invention is susceptible to modification in order to adapt it to difierent usages and conditions; and accordingly, it is desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.
What is claimed is:'
1. A roller stand which comprises in combination:
a frame, a pair of working rollers arranged within said frame and defining a bight with each other for receiving material to be rolled between said working rollers, a pair of backing rollers respectively engaging said working rollers, the axes of rotation of all of said rollers being substantially parallel to each other while being located substantially in one and the same plane, two pairs of supporting means supported by said frame in spaced relationship to each other and respectively rotatably supporting the ends of said backing "'rolle'is, two pairs of bearing'block's respectively slidably supported by said twopairs of supporting means and respectively rotatably supporting the ends of said working rollers, two pairs of double acting fluid operable cylinder piston means respectively operatively connected to said two pairs of bearing blocks and operable respectively to positivelyadjust said airs of bearing blocks independently of'- each other-relative toward andaway from each other, each of said double: acting cylinder "pi ston'm'eans comprising a single cylinder only connected to one end of a respective bearing block and which is reciprocably mounted inarespective adjacent supporting means and is moveable in opposite directions with regard to the respective adjacent supporting means and also comprising a single. double acting piston ,stationarily arranged with regard to the respective adjacent su porting means and extending into the cylinderpertaining thereto, and means respectively associated with said pairs of fluid operable cylinder piston means for supplying pressure fluid selectively mom or the other side of the respective piston pertaining thereto.
I. A roller stand according to claim 1, in which each of said cylinders and the respective bearing blocks pertaining thereto positively interengage each other by protrusions and recesses.
References Cited UNITED STATES PATENTS 1,935,091 11/1933 Iversen 72-243 3,242,711 3/1966 Fox 72-243 1,898,007 2/1933 Ewart 72-243 FOREIGN" PATENTS 888,816 9/1943 France.
CHARLES w. LANHAM, Primary Examiner. K. C. DECKER, Assistant Examiner.
US384691A 1963-07-29 1964-07-23 Arrangement for counter-balancing the working rollers of a roller stand Expired - Lifetime US3398564A (en)

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DEA43699A DE1289811B (en) 1963-07-29 1963-07-29 Device for balancing and bending the work rolls of a four-high framework

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864955A (en) * 1973-12-04 1975-02-11 Blaw Knox Foundry Mill Machine Rolling mill stand
US4194382A (en) * 1976-11-26 1980-03-25 Hitachi, Ltd. Rolling mill
US4606208A (en) * 1984-05-16 1986-08-19 Kaiser Steel Corporation Pipe forming apparatus
FR2594359A1 (en) * 1986-02-14 1987-08-21 Clecim Sa METHOD OF ADJUSTING THE PROFILE OF DISPLACABLE CYLINDERS IN A ROLLING MILL AND IMPROVED ROLLING MILL FOR IMPLEMENTING THE METHOD
EP0340504A2 (en) * 1988-05-06 1989-11-08 Sms Schloemann-Siemag Aktiengesellschaft Device for bending and balancing axial movable rolls of a rolling stand
US20140205826A1 (en) * 2011-07-07 2014-07-24 Dsm Ip Assets B.V. Process for making a polymeric film

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059417B1 (en) * 1981-02-28 1985-01-02 Sms Schloemann-Siemag Aktiengesellschaft Roll stand
DE3145526C2 (en) * 1981-11-17 1985-10-31 Sulzer-Escher Wyss AG, Zürich Roll stand
DE4041290A1 (en) * 1990-12-21 1992-07-02 Achenbach Buschhuetten Gmbh DEVICE FOR BALANCING AND VERTICAL BENDING THE WORK ROLLERS OF A QUARTO ROLLING DEVICE
DE4203189A1 (en) * 1992-02-05 1993-08-12 Achenbach Buschhuetten Gmbh DEVICE FOR BALANCING AND BOWING THE WORK ROLLS OF A ROLLING STAND
US5842368A (en) * 1996-02-23 1998-12-01 Achenbach Buschhutten Gmbh Multiroll stand

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1898007A (en) * 1931-10-21 1933-02-21 United Eng Foundry Co Working roll balance for a backed-up rolling mill
US1935091A (en) * 1932-07-22 1933-11-14 Mesta Machine Co Apparatus for balancing rolls
FR888816A (en) * 1942-01-16 1943-12-23 Bandeisenwalzwerke Ag hydraulic balancing of rolling mill rolls
US3242711A (en) * 1961-06-28 1966-03-29 Fox Ind Inc Rolling mill structures

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE449493A (en) * 1942-02-16
US3024679A (en) * 1957-07-01 1962-03-13 Thomas A Fox Skin pass mills and methods of rolling
GB870777A (en) * 1958-08-25 1961-06-21 United Eng Foundry Co Method of and apparatus for rolling strip material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1898007A (en) * 1931-10-21 1933-02-21 United Eng Foundry Co Working roll balance for a backed-up rolling mill
US1935091A (en) * 1932-07-22 1933-11-14 Mesta Machine Co Apparatus for balancing rolls
FR888816A (en) * 1942-01-16 1943-12-23 Bandeisenwalzwerke Ag hydraulic balancing of rolling mill rolls
US3242711A (en) * 1961-06-28 1966-03-29 Fox Ind Inc Rolling mill structures

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864955A (en) * 1973-12-04 1975-02-11 Blaw Knox Foundry Mill Machine Rolling mill stand
US4194382A (en) * 1976-11-26 1980-03-25 Hitachi, Ltd. Rolling mill
US4606208A (en) * 1984-05-16 1986-08-19 Kaiser Steel Corporation Pipe forming apparatus
FR2594359A1 (en) * 1986-02-14 1987-08-21 Clecim Sa METHOD OF ADJUSTING THE PROFILE OF DISPLACABLE CYLINDERS IN A ROLLING MILL AND IMPROVED ROLLING MILL FOR IMPLEMENTING THE METHOD
EP0238377A1 (en) * 1986-02-14 1987-09-23 Clecim Roll bending control in a rolling mill with axially shiftable rolls
US4773246A (en) * 1986-02-14 1988-09-27 Clecim Process for adjusting the profile of rolls movable in a rolling mill and improved rolling mill for carrying out the process
EP0340504A2 (en) * 1988-05-06 1989-11-08 Sms Schloemann-Siemag Aktiengesellschaft Device for bending and balancing axial movable rolls of a rolling stand
EP0340504A3 (en) * 1988-05-06 1990-06-06 Sms Schloemann-Siemag Aktiengesellschaft Device for bending and balancing axial movable rolls of a rolling stand
US20140205826A1 (en) * 2011-07-07 2014-07-24 Dsm Ip Assets B.V. Process for making a polymeric film
US10384408B2 (en) * 2011-07-07 2019-08-20 Dsm Ip Assets B.V. Process for making a polymeric film

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DE1289811B (en) 1969-02-27
DE1289811C2 (en) 1973-07-05
GB1045605A (en) 1966-10-12

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