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1. 发明专利

JPH10258319A ROLLER STRAIGHTENING MACHINE 失效
公开(公告)号：JPH10258319A
公开(公告)日：1998-09-29
申请号：JP6318897
申请日：1997-03-17
申请人： HITACHI LTD , NIPPON KOKAN KK
发明人： SEKIYA TERUO , KIMURA TOMOAKI , FUJII YUKIO , KOMATSUBARA MINORU , TOMITA SHOGO , WATANABE MAKOTO
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To remove a residual stress on a radiused part by constituting a lower horizontal roller to vertically move a roller shaft in a vertical direction and a pair of vertical rollers to move in the roller axial direction of a horizontal direction to conduct fine rolling for rediused part of a wide flange shape. SOLUTION: A wide flange shape 11 rolled by a rolling mill is carried into an inlet side table, while a web is brought into contact with #1, #2 horizontal rollers from up/down, a flange part is pressed from outside with a vertical roller 13 arranged to a bearing box of the #2 horizontal roller to be subjected fine rolling. Further, after warp/bending is straightened by #3-#9 horizontal rollers, the wide flange shape is carried out by an outlet side table. At this time, a #0 lower horizontal roller is used to take out straightening reaction of the #3-#19 horizontal rollers. Thus, fine rolling and straightening are simultaneously conducted, improvement of efficiency and productivity are made possible.

2. 发明专利

JPH09248628A ROLLER STRAIGHTENING MACHINE WITH AUTOMATIC ZERO-POINT ADJUSTING SYSTEM 失效
公开(公告)号：JPH09248628A
公开(公告)日：1997-09-22
申请号：JP5790696
申请日：1996-03-14
申请人： HITACHI LTD , NIPPON KOKAN KK
发明人： KIMURA TOMOAKI , SEKIYA TERUO , FUJII YUKIO , KOMATSUBARA MINORU , TOMITA SHOGO , WATANABE MAKOTO
IPC分类号： B21D3/05 , H01S3/00
摘要： PROBLEM TO BE SOLVED: To improve positional precision of a roller by emitting and receiving a beam on the passing line of a bar stock as a reference for setting a roller, positioning plural rollers on the basis of the beam, and thereby effectively aligning plural rollers precisely. SOLUTION: A floodlamp 54 and a light receiver 55 using a laser beam are provided on the entrance and the exit side of a stand 1. With the entire roller shaft moved from the lower to upper part by a motor, the position where the reference part crosses the laser beam becomes the reference position of a position measuring apparatus for the four lines of straightening rollers. The reference position of each position detector is stored in a control panel. Rolling reduction is calculated for each straightening roller based on the reference position, with only the necessary part manipulated by an actuator, thus setting positions of each straightening roller.

3. 发明专利

JPH10258317A ROLLER SLEEVE ASSEMBLING UNIT, ROLLER CHANGING DEVICE AND ROLLER CHANGING METHOD 失效
公开(公告)号：JPH10258317A
公开(公告)日：1998-09-29
申请号：JP6318697
申请日：1997-03-17
申请人： HITACHI LTD , NIPPON KOKAN KK
发明人： SEKIYA TERUO , KIMURA TOMOAKI , FUJII YUKIO , KOMATSUBARA MINORU , TOMITA SHOGO , WATANABE MAKOTO
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To easily and continuously execute work for taking out a roller from a roller sleeve assembling unit and changing it without depending on manual work. SOLUTION: A work-side roller sleeve 30 is provided with a collar part 30A, small- diameter part 30B, outer pawls 30Ba and intermediate part 30C. At the time of assembling the roller sleeve assembling unit, the inside diameter of the work-side split roller 27a is inserted on the intermediate part 30C, the inside diameter of an extendable screw ring 28 is inserted on the intermediate part 30C, a stopper ring 29a on which inner pawls 29aA are formed is inserted on the small-diameter part 30B so that the inner pawls 29aA do not interfere with the outer pawls 30Ba in the small-diameter part 30B and the split roller 27a is abutted on the collar part 30A through the extendable screw ring 28a. Then, after rotating the stopper ring 29a in the peripheral direction so that the end face of the inner pawl 29a is abutted on the end face of the outer pawl 30Ba, the split roller 27a is firmly fixed to the work-side roller sleeve 30 by rotating an outer cylinder 28ao to the inner cylinder 28ai of the extendable screw ring 28a and extending the length in the axial direction of an extendable screw ring 28a.

4. 发明专利

JPH10258318A ROLLER STRAIGHTENER 失效
公开(公告)号：JPH10258318A
公开(公告)日：1998-09-29
申请号：JP6318797
申请日：1997-03-17
申请人： HITACHI LTD , NIPPON KOKAN KK
发明人： SEKIYA TERUO , KIMURA TOMOAKI , FUJII YUKIO , KOMATSUBARA MINORU , TOMITA SHOGO , WATANABE MAKOTO
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To miniaturize a vertical-roller supporting device and to obviate a vertical-roller moving device and angle adjusting mechanism by making the shaft of the straightening roller into both end supporting type and also connecting the vertical-roller supporting device to two those bearing mechanisms. SOLUTION: In a roller straightener for executing straightening while preventing the inclination of the flanges of the wide flange shape 11 which has an upper roller and bearing component which are provided with horizontal rollers which are alternately arranged up and down along the longitudinal direction of the wide flange shape and vertical rollers 13a, 13b which are brought into contact with the outside surfaces of the wide flange shape and whose center axes are respectively located on a plane including a center axis of each horizontal roller, the shaft of each horizontal roller is respectively supported at both ends with bearing boxes 113a, 113b and two chocks 67a, 67b for rotatably supporting each pair of vertical rollers 13a, 13b are respectively connected to two bearing boxes 113a, 113b in both end parts of corresponding horizontal rollers 27a, 27b.

5. 发明专利

JPH10258316A ROLLER STRAIGHTENER FOR SHAPE HAVING VARIABLE PITCH TYPE DRIVE UNIT 失效
公开(公告)号：JPH10258316A
公开(公告)日：1998-09-29
申请号：JP6318597
申请日：1997-03-17
申请人： HITACHI LTD , NIPPON KOKAN KK
发明人： MAEKAWA YOSHIHIRO , SEKIYA TERUO , ITO RYOJI , FUJII YUKIO , KOMATSUBARA MINORU , TOMITA SHOGO , WATANABE MAKOTO
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To provide a roller straightener for shapes with which the restrictions of a biting speed and straightening speed of a material to be straightened are not provided and, without making the a universal joint into large diameter, to enable manufacturing the high quality of straightened material. SOLUTION: With the controllers 27a, 27c of this straightener, even when the difference is generated between the respective amounts of travel of an upper straightening roller unit 8a and a driving unit 3a caused by load difference or the like, the drive amount of the drive unit moving motor 11a is calculated so that the angle formed by a universal joint 5a and the roller shaft 16a of the upper roller 6a is within the normal value and so that a drive unit 3a is interlocked with the upper straightening roller unit 8a. Based on the calculated drive amount, by driving a drive unit moving motor 11a, rotating a screw shaft 44a which is worked into multithread screw and moving a nut 54b which is engaged with the screw shaft 44a, the drive unit 3a having the nut 54b is interlocked with the upper straightening roller unit 8a.

6. 发明专利

JPH09248627A ROLLER STRAIGHTENING MACHINE FOR BAR STOCK 失效
公开(公告)号：JPH09248627A
公开(公告)日：1997-09-22
申请号：JP5728996
申请日：1996-03-14
申请人： HITACHI LTD , NIPPON KOKAN KK
发明人： KIMURA TOMOAKI , SEKIYA TERUO , FUJII YUKIO , KOMATSUBARA MINORU , TOMITA SHOGO , WATANABE MAKOTO
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To repeatedly bend a bar stock even in a horizontal plane with a simple structure, to cope with various dimensional change of the bar stock, and to provide excellent correction accuracy and quality. SOLUTION: Correction rollers 2, 3 are fitted to a roller shaft 23 through sleeves 21, 22. The correction roller 2 is held at the position in the axial direction of the roller relative to a bearing box 4, while the correction roller 3 is advanced/retracted to/from the bearing box 4 in the axial direction by the effect of a motor, a worm wheel 38, and a screw 37. The clearance between the correction rollers 2, 3 is adjusted. The bearing boxes 4, 5 are fixed to a slider, and a roller assembly is moved in the axial direction of the roller as the slider is moved by a motor and a worm reduction gear.

7. 发明专利

JP2000190016A WIDE-FLANGE SHAPE STEEL FLANGE COOLING EQUIPMENT 失效
公开(公告)号：JP2000190016A
公开(公告)日：2000-07-11
申请号：JP36712898
申请日：1998-12-24
申请人： NIPPON KOKAN KK
发明人： FUJIBAYASHI TERUO , NAKASEKO MAKOTO , MAKINOHARA MISAO , ARIMURA TSURUWA , FUJII YUKIO
IPC分类号： B21B45/02 , C21D1/00 , C21D9/00
摘要： PROBLEM TO BE SOLVED: To perform accelerated stable cooling with high cooling efficiency and prevent excessive cooling of a web while preventing the cooling water from running over by inclining, downward from the level, nozzle axes of many nozzles formed in side guides to sandwich both flanges from both sides of the line and guide them. SOLUTION: From guides provided with many cooling water nozzles 3 which also act as side guides 4, cooling water is sprayed to the outside surface of flanges 2 of a wide-flange shape steel 1. This sprayed cooling water is divided into multiple blocks 5 which can independently make flow control and on/off control, and each block 5 is provided with a flow rate valve 6 for flow control and an on/off control valve 7. With this cooling equipment, it is possible to move the side guide 4, a cooler itself, close to the flange 2 to be cooled, and since the side guide 4 itself is provided with the cooling water nozzles 3, the nozzles will not be broken even when the cooling water nozzles 3 are brought into contact with the wide-flange shape steel 1. The pitch of the cooling water nozzles 3 can be optionally selected and high-density cooling can be done.

8. 发明专利

JPH11254037A METHOD FOR CORRECTING SHAPE STEEL WITH ROLLER AND DEVICE THEREFOR 失效
公开(公告)号：JPH11254037A
公开(公告)日：1999-09-21
申请号：JP5812698
申请日：1998-03-10
申请人： NIPPON KOKAN KK
发明人： FUJII YUKIO , KATAOKA NAOKI
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To prevent the defective correction of round part in a wide flange shape steel by calculating a correcting load and varied quantities of one pair of roll widths from the necessary intermesh quantity to the correction, adjusting the roll width so that the rolling reduction quantities with one pair of rolls equalize and executing the rolling reduction and the correction. SOLUTION: The wide-flange shape steel is passed between each two pieces of an upper roll and a lower roll disposed zigzag state and the corrective load Fi added to arbitrary correcting roll shaft from the necessary intermesh quantity to the correction of the wide flange shape steel, is set. The width varied quantity ΔWi between each of two pieces of the rolls is calculated with the equalities 3 and 4 from Fi and this roll width is adjusted so that the rolling reduction quantities with each of two pieces of the rolls are equalized from ΔWi to execute the rolling reduction and the correction to the wide flange shape steel. Wherein, ψi1, ψi2 are the inclining angles in each of two pieces of rolls, Li1, Li2 are the distances between each two pieces of rolls and each bearing ri is the radius of the roll, αi is looseness in the roll axial direction and the intermesh quantity is the quantity subtracting the plate thickness of the correcting material from the intruding quantity at the north pole (one end side) of the lower roll to the straight line connected with the south pole (other end side) of the upper roll.

9. 发明专利

JPH09108707A MANUFACTURING DEVICE OF T-STEEL 失效
公开(公告)号：JPH09108707A
公开(公告)日：1997-04-28
申请号：JP27250295
申请日：1995-10-20
申请人： NIPPON KOKAN KK
发明人： TOMITA SHOGO , MIYASATO TOSHIO , FUJITA YONEAKI , WATANABE MAKOTO , MORISANE TORU , KOMATSUBARA MINORU , FUJII YUKIO , OMORI KIYOO
IPC分类号： B21B15/00 , B21B1/08 , B21B1/092 , B21C37/00 , B21D3/05
摘要： PROBLEM TO BE SOLVED: To reduce the number of processes and the period of production so as to make a T-steel efficiently by decreasing residual stress of an H-steel, applying web cutting or preliminary working to it, correcting its shape vertically and horizontally, and thereby securing the post-cutting straightness of T-steel. SOLUTION: A light screw-down type universal rolling mill 10 removes residual stress while rolling down the root of the web of an H-steel 1 through the reduction by its vertical roll 12, and also cuts the web by the pre-working roll. A roller straightener 20, performing repeated bend and left/right bend by the upper and lower rolls while pinching the web and flange by the horizontal rolls 21, 22 and the vertical roll 23, cuts the web, straightens the T-steel thus cut to produce a cut T-steel. In addition, with the purpose of fully demonstrating this effect, the light screw-down type universal rolling mill 10 is equipped with a driving unit 15 and a reduction gear 16, as is the roller straightener 20 with a driving unit 25 and a reduction gear 26, so that both driving units 15, 25 are properly controlled.

10. 发明专利

JPH07173656A METHOD FOR PREVENTING DISCOLORATION OF STEEL SHEET 失效
公开(公告)号：JPH07173656A
公开(公告)日：1995-07-11
申请号：JP31961393
申请日：1993-12-20
申请人： NIPPON KOKAN KK
发明人： NASU SHOGO , MORI TOSHIKAZU , FUJII YUKIO , SOUDEN NAOKI , YAMAMOTO KAZUO
IPC分类号： C25F1/00 , C23F11/00 , C23G1/19
摘要： PURPOSE:To prevent the discoloration of a high-quality and highly economical steel sheet which has been cleaned or electrolytically cleaned with an alkali. CONSTITUTION:In this method, a discoloration preventive agent or a cleaning water mixed with the agent is applied on a traveling steel sheet which has been cleaned and/or electrolytically cleaned with alkali, when the sheet is stopped or travels at a speed of

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