CN107252822B - Eighteen-roller mill - Google Patents
Eighteen-roller mill Download PDFInfo
- Publication number
- CN107252822B CN107252822B CN201710602539.8A CN201710602539A CN107252822B CN 107252822 B CN107252822 B CN 107252822B CN 201710602539 A CN201710602539 A CN 201710602539A CN 107252822 B CN107252822 B CN 107252822B
- Authority
- CN
- China
- Prior art keywords
- roller
- working
- roll
- horizontal
- bearing
- 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
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 60
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000005097 cold rolling Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 238000004804 winding Methods 0.000 claims description 42
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000013072 incoming material Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 239000000839 emulsion Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
-
- 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
-
- 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
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
-
- 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
- B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
-
- 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
- B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
- B21B31/30—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by wedges or their equivalent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention relates to a eighty-eight rolling mill, which belongs to a cold rolling mill for rolling metal strips, and comprises a pair of working rolls and an intermediate roll which is contacted with the working rolls and is used for driving the working rolls, and is characterized in that: along the conveying direction of the strip, a pair of horizontal support rollers are respectively arranged at the inlet side and the outlet side of the rolling mill, and the horizontal support rollers are respectively contacted with the upper working roller and the lower working roller to support the rolling reaction force loaded on the respective working rollers, so that the working rollers are extruded by the middle roller and the respective pair of horizontal support rollers to be relatively fixed; each horizontal supporting roller is axially provided with a side pushing device which is used for supporting the horizontal supporting roller through a whole roller body from an operation side to a transmission side; when the horizontal support roller is in the working position, the horizontal support roller always keeps line contact with the working roller along the axial direction of the working roller. The relative layout is more reasonable, the roll replacement is more targeted, the lubrication and cooling are more sufficient, and the stress of the back lining bearing is more uniform.
Description
Technical Field
The invention belongs to the field of metallurgical equipment, and particularly relates to a novel eighteen-roller mill structure.
Background
The cold rolling mill is a key device for producing cold-rolled strip steel, and the surface quality, thickness tolerance, plate type index and the like of the finished strip steel play an important role except the relation with the steel coil of the supplied materials. Rolling mills for producing cold rolled steel strip are available in a variety of forms, such as four-high, six-high, eighteen-high, twenty-high, etc. However, for rolling difficult-to-deform materials and thin strips, eighteen rolls have obvious advantages, mainly expressed in the following aspects: (1) The working roll diameter of the eighteen-roller mill is smaller, and the ratio of the working roll diameter to the roll surface width can reach 1:10, the rolling deformation area is small, and the rolling force is small; (2) Because the working roller adopts multi-point support, the rigidity of the roller system is higher, the vertical deflection and the horizontal deflection of the roller are reduced, and a better plate shape can be obtained; (3) The small-diameter working roller can obtain larger pass reduction rate and rolling total reduction rate, and the thickness of a finished product can be achieved without intermediate annealing, so that the purposes of saving energy and reducing cost are achieved; (4) Compared with a twenty-high rolling mill which is the same as a multi-high rolling mill, the twenty-high rolling mill has no problem of small opening degree and difficult threading, is superior to the twenty-high rolling mill in service life of working rolls, and reduces the times of correspondingly replacing the working rolls, thereby improving the production efficiency and saving the consumption cost of the rolls.
The foreign Senkymill eighteen rolling mill (DE 3324562C2, US 4270377) has the advantages that: the rigidity of the rolling mill is high, the roller diameter of the working roller is small, and thinner products can be rolled. But it also has the disadvantages: the opening degree of the rolling mill is small, the lubrication and cooling effects are poor, the speed is low, the equipment maintenance is inconvenient, the equipment cost is high, and the like; the SMS company Z-high eighteen rolling mill (WO 2004052568) was further optimized on the basis of the sendzimir mill and was newly designed with a horizontal movement function of the work rolls, improving the beam arm assembly of the intermediate roll set (WO 2011003561). However, when the back-up bearing is replaced, the time and the labor are consumed, the middle roller and the side support roller boxes on two sides are firstly dragged out of the frame, and then a new set of middle roller and side support roller boxes are replaced, and the tedious disassembly and installation work is carried out under the line, so that the labor cost and the time cost are increased; the S-High eighty-roll mill (WO 0121334) of SUNDWIG corporation under the DRITZ corporation presents a more convenient and concise method for replacing the side supports by removing the side support roll cassettes mounted on the side support beams and then separately pulling out the side support roll cassettes for backing bearing replacement, thus simplifying the process of pulling out the middle roll to disassemble and mount the entire middle roll and side support roll cassettes, but still requiring the entire side support roll cassettes to be pulled out of the mill housing and then replacing the excessively worn or damaged backing bearings. Although only one backing bearing of one row of backing bearings needs to be replaced, the whole side supporting roller box needs to be pulled out, the mounting and fixing device shared by the two rows of backing bearings is removed, and then the bearing replacement is carried out, so that the replacement process is tedious and time-consuming. Most importantly, the three eighteen rolling mills have the common characteristic that two rows of backing bearings with the same outer diameter are arranged on the same side supporting beam, the positions of the backing bearings are relatively fixed, the same driving force is different (in the practical case, the force of the backing bearing of the row close to the strip steel is far greater than that of the other row), the service lives of the backing bearings are different, and the backing bearings which do not need to be replaced are frequently pulled out of the frame.
Disclosure of Invention
The invention aims to solve the technical problems that: in view of the technical defects and shortcomings, a novel eighteen rolling mill is designed, which is more reasonable in relative layout, more targeted in roll changing, more sufficient in lubrication and cooling and more uniform in stress of a backing bearing.
In order to solve the technical problems, the invention adopts the following technical scheme:
a eighty-high rolling mill, which belongs to a cold rolling mill for rolling metal strips, comprising a pair of working rolls and an intermediate roll which is contacted with the working rolls and is used for driving the working rolls, and is characterized in that: along the conveying direction of the strip, a pair of horizontal support rollers are respectively arranged at the inlet side and the outlet side of the rolling mill, and the horizontal support rollers are respectively contacted with the upper working roller and the lower working roller to support the rolling reaction force loaded on the respective working rollers, so that the working rollers are extruded by the middle roller and the respective pair of horizontal support rollers to be relatively fixed; each horizontal supporting roller is axially provided with a side pushing device which is used for supporting the horizontal supporting roller through a whole roller body from an operation side to a transmission side; when the horizontal support roller is in the working position, the horizontal support roller always keeps line contact with the working roller along the axial direction of the working roller.
The side pushing device comprises a rear end force generating device and a front end contact and pushing part of the horizontal supporting roller, wherein the pushing part of the horizontal supporting roller is arranged along the length of the roller body of the horizontal supporting roller by a plurality of backing bearings, namely a plurality of backing bearings are arranged on a shaft in series at intervals in a segmented mode and are arranged along the length of the roller body of the horizontal supporting roller to form a backing bearing roller; each backing bearing roller always keeps line contact with each corresponding horizontal supporting roller along the axial direction of each corresponding horizontal supporting roller when in a working state; the same horizontal support roller is supported by two backing bearing rollers; the force-generating device and the backing bearing roller are arranged in line with each other so as to apply lateral support forces to the respective work rolls by the force-generating device.
Further, the backing bearing roller has a length greater than or equal to the width of the rolled strip.
Further, the force-generating device of the side pushing device comprises two kinds, one is a side support assembly, and the other is an anti-winding guide plate, which are all arranged along the conveying direction of the metal stripRolling millThe left side and the right side of the working roller are respectively arranged and fixed on the sliding lining plate, and two backing bearing rollers are arranged at the outer sides of each horizontal supporting roller correspondingly to form an 18-roller system structure together; the device comprises two anti-winding guide plates, wherein each anti-winding guide plate is arranged along the axial direction of a working roll, one is arranged on the inlet side, and the other is arranged on the outlet side; four side support assemblies are arranged at the inlet side and the outlet side of the rolling mill, one side support assembly is arranged above and below each winding-preventing guide plate at each side, and the side support assemblies are arranged along the roll direction in a full length mode; the backing bearing roller is arranged at the front end of the anti-winding guide plate and the side support assembly.
Further, in the side support assembly structure, the whole back lining bearing roller is arranged on the side support beam and driven by a hydraulic cylinder with a displacement sensor; the sliding lining board is provided with a sliding key, the side surface of the anti-winding guide plate is provided with a sliding groove, and the anti-winding guide plate is driven by the driving cylinder to slide along the sliding key so as to drive the back lining bearing roller.
Further, a working roll box is correspondingly arranged above and below the belt material transmission line, and the transmission side and the operation side are respectively provided with four working roll boxes along the two ends of the roll axial direction; each working roll box comprises a bearing seat, a working roll, a horizontal supporting roll bearing seat and a horizontal supporting roll on two sides of the working roll, and a contact force adjusting device arranged on the horizontal supporting roll bearing seat; the contact force adjusting device is used for adjusting the position of the bearing seat of the horizontal support roller relative to the working roller so as to adjust the gap between the horizontal support roller and the working roller.
Further, the contact force adjusting device comprises a stop block, a pull rod and a compression spring; the stop block is arranged on the bearing seat, one end of the pull rod is movably blocked by the stop block, the other end of the pull rod passes through the stop block and is connected to the horizontal support roller bearing seat, an elastic piece and a nut are arranged on the pull rod between the stop block and the horizontal support roller bearing seat, and a pull rod section corresponding to the nut is provided with threads; the bearing seat is provided with a long hole, and the horizontal support roller bearing seat can slide along the long hole; the spring is preloaded between the stop block and the nut through the matching of the threads on the nut and the pull rod, the pre-pressure of the spring is controlled through adjusting the position of the nut, and the horizontal support roller and the working roller are ensured to be kept in contact at all times and support the working roller.
Further, the wedge-shaped adjusting device comprises four hydraulic cylinders which are respectively arranged on the operation side housing and the transmission side housing, the front ends of the hydraulic cylinders are connected with the sliding lining plate, and the anti-winding guide plate and the side support assembly are jointly arranged on the sliding lining plate, so that the sliding lining plate can slide up and down along the housing under the driving of the hydraulic cylinders of the wedge-shaped adjusting device; when the incoming material is a wedge-shaped plate, the hydraulic cylinder of the wedge-shaped adjusting mechanism pushes the sliding lining plate to move, the anti-winding guide plate and the side support assembly structure arranged on the sliding lining plate move along with the sliding lining plate, and the sliding distance between the transmission side sliding lining plate and the operation side sliding lining plate can be independently adjusted, so that the tilting of the working roller is corresponding, and the working roller is well supported on the horizontal side; so that the roll gap is suitable for rolling wedge strip.
Furthermore, the middle roller can axially float, and the middle roller is provided with a positive roller and a negative roller.
In summary, the main structure of the invention comprises a frame housing assembly, a pressing cylinder assembly, a roller assembly, a side support assembly, a wedge-shaped adjusting mechanism, an anti-entanglement guide plate and a rolling line adjusting device, wherein the roller assembly comprises an upper roller system and a lower roller system, and the upper roller system comprises an upper working roller box, an upper side support assembly, an upper middle roller assembly and an upper supporting roller assembly. The lower roll system comprises a lower working roll box, a lower side support assembly, a lower middle roll assembly and a lower support roll assembly. The upper working roll box and the lower working roll box respectively comprise a working roll, a transmission side bearing seat assembly, an operation side bearing seat assembly and horizontal supporting rolls arranged on two sides of the working roll, and an adjusting mechanism for adjusting the contact force between the horizontal supporting rolls and the working rolls is arranged on the working roll bearing seat. The inlet and outlet of the rolling mill are provided with anti-winding guide plates which can slide back and forth along sliding keys arranged on a sliding lining plate, emulsion spraying devices are arranged in the anti-winding guide plates, and the front ends of the anti-winding guide plates are provided with sectional backing bearing supporting structures for supporting horizontal supporting rollers. Side support assembly structures are arranged above and below the winding prevention guide plate, and the sectional backing bearing assembly is driven by a hydraulic cylinder (or other driving mode) to support the horizontal support roller. The winding-preventing guide plate and the side support assembly are jointly installed on the sliding lining plate, and the sliding lining plate can slide up and down along the housing under the driving of the hydraulic cylinder of the wedge-shaped adjusting mechanism. The following is a specific description of the various assemblies or mechanisms:
(1) Side support assembly and winding-proof guide plate back lining bearing support structure
Because the eighty-eighth rolling mill needs to adopt smaller working roll diameter when rolling high-strength strip steel such as silicon steel, stainless steel, special steel and the like, the horizontal deflection of the working roll is obviously increased along with the reduction of the roll diameter, the horizontal rigidity is obviously reduced, and the plate shape control is greatly influenced, the horizontal deflection of the working roll is reduced by designing lateral support and horizontal movement of the working roll, and the horizontal rigidity of the working roll is further increased. Specifically, the side supports are additionally arranged on two sides of the working roll, the side supports in the embodiment are divided into two parts, one of the side supports is a side support assembly, the side supports are arranged above the side of the horizontal support roll, the sectional backing bearing is arranged on a through shaft, the supporting force is ensured to be large enough through multi-point support, meanwhile, a proper roll-shaped curve is also arranged on the whole backing bearing roll (coaxially arranged by a plurality of backing bearings), the horizontal support roll is ensured to be supported in an omnibearing manner along the length of the roll body, and then the working roll is supported to reduce the horizontal deflection of the working roll. The whole back lining bearing roller is arranged on the side supporting beam, and is driven by a hydraulic cylinder with a displacement sensor, so that the position of the back lining bearing roller can be adjusted according to the change of the diameter of the working roller, and the position adjustment after the working roller moves horizontally can be adapted; the other is a backing bearing supporting structure of the anti-winding guide plate, the anti-winding guide plate can slide back and forth along a sliding key on a sliding lining plate, the whole anti-winding guide plate controls the advancing or retreating position of the anti-winding guide plate through a hydraulic cylinder (with a displacement sensor), and a backing bearing roller arranged at the front end of the anti-winding guide plate supports a horizontal supporting roller and bears most of horizontal force on a working roller during rolling, and the anti-winding guide plate can also adapt to the horizontal movement of the working roller and provide follow-up support for the working roller. The two side supports are used for reducing the horizontal deflection of the working roller, but the stress is quite different, and the horizontal force on the working roller and the included angle between the passing steel wires are smaller, so that the backing bearing supporting structure (closer to the passing steel wires) of the anti-winding guide plate is subjected to larger horizontal force, the backing bearing on the backing bearing supporting structure has larger bearing capacity, and the backing bearing on the side support assembly is smaller in bearing capacity, so that the sizes of the two backing bearings can be selected to be different (the same) so as to save cost. When the backing bearing on the backing bearing supporting structure of the side support assembly and the winding-preventing guide plate is damaged and needs to be replaced, only the side support assembly driving hydraulic cylinder and the winding-preventing guide plate driving hydraulic cylinder are required to be retracted to the roll changing position, the middle roll assembly is lifted to the roll changing position, at the moment, the backing roll of which the backing bearing needs to be replaced is directly pulled out through the backing roll changing equipment, the whole side is not required to be pulled out more smoothly, the roll changing is more targeted, convenient and free, time and labor are saved, and the working efficiency is improved.
(2) Work roll box structure
The work roll box structure comprises a transmission side bearing seat, an operation side bearing seat, a work roll, a horizontal supporting roll and a contact force adjusting device arranged on the bearing seat. The specific principle of the contact force adjusting device is as follows: the bearing seat is provided with a stop block, the pull rod (one end of the pull rod is provided with a thread) penetrates through the stop block and is connected to the bearing seat, the pull rod is provided with a compression spring (other elastic pieces), the spring is preloaded between the stop block and the nut through the matching of the threads on the nut and the pull rod, the bearing seat of the working roll is provided with a long hole, the bearing seat of the horizontal support roll can slide along the long hole, and therefore the magnitude of the pre-pressure of the spring can be controlled through adjusting the position of the nut, so that the horizontal support roll and the working roll are kept in contact and supported at all times. When the working roll needs to be replaced, the whole working roll box is pulled out of the frame along the roll replacing track, the nuts are loosened, a certain gap is reserved between the horizontal supporting roll and the roll surface of the working roll, and the working roll is convenient to replace. In order to further reduce the horizontal force of the working roll, a horizontal movement function is designed for the working roll, the horizontal support roll is supported by the side support assembly and the anti-winding guide plate back lining bearing, the whole working roll box is pushed to slide to a preset position, then the working roll is ensured to be clamped by the side supports at two sides, and then strip steel rolling is started. The horizontal rigidity of the working roller is increased by the working roller box structure, and meanwhile, the horizontal force is reduced by horizontal movement, so that good conditions are created for ensuring smooth rolling.
(3) Wedge-shaped adjusting mechanism
When the eighty-eighth rolling mill rolls, due to poor plate shape of incoming materials, wedge-shaped strips (the thickness difference of the two sides of the incoming materials along the cross section is larger) can appear sometimes, at the moment, the working rolls are required to be adjusted by an inclination angle, namely the inclination rollers are adjusted to improve the plate shape of finished products, when the working rolls are adjusted by the inclination rollers, the horizontal support rollers and the working rolls are jointly installed on a unified bearing seat, so that the horizontal support rollers can incline by a certain angle, if the back lining bearing rollers do not follow-up inclination, the working rolls are not completely supported along the roll body, the working rolls are broken when the horizontal force acts on the back lining bearing rollers, production accidents are generated, and the production efficiency is seriously influenced. In order to avoid the occurrence of the accident, the invention designs the wedge-shaped adjusting mechanism, and when the material is wedge-shaped plate, the working roll, the horizontal supporting roll and the back lining bearing roll can synchronously incline, so that the overall support of the roll body of the working roll is ensured. The sliding lining plate is driven to move by a driving hydraulic cylinder (with a displacement sensor) of the wedge-shaped adjusting mechanism, at the moment, the anti-winding guide plate arranged on the sliding lining plate moves with the side supporting structure, and the sliding distance between the driving side sliding lining plate and the operating side sliding lining plate can be independently adjusted, so that the tilting of the working roller is corresponding, and the working roller is well supported on the horizontal side. The design structure is simple, the operability is strong, and the occurrence of roller breakage accidents is reduced.
(4) Intermediate roll assembly and other structures
The middle roller is designed to axially float, so that the harmful contact area of the roller is reduced, the thinning of the edge of the strip is reduced, and meanwhile, the positive and negative bending rollers are designed on the middle roller, so that the shape of the strip can be better controlled. The rolling device, the supporting roller assembly and the rolling line adjusting device are similar to those of a common rolling mill, and the invention is not repeated.
The eighty-eighth rolling mill well solves the problem of horizontal deflection of the working roll, so that the back lining bearing is replaced more time-saving and labor-saving, and meanwhile, the wedge-shaped adjusting mechanism is added, so that the problem that the working roll is easy to break is solved, the safety and reliability of equipment are improved while the good plate shape is ensured, the cost is reduced, and the popularization prospect is wide.
Drawings
FIG. 1 is a cross-sectional view of a eighteen roll mill of the present invention;
FIG. 2 is an enlarged partial cross-sectional view of a eighteen roll mill according to the present invention;
FIG. 3 is a schematic view of a roll train of a eighteen roll mill according to the present invention;
FIG. 4 is a schematic view of the detail of the work roll cassette 12 of the eighteen-high mill of the present invention;
FIG. 5 is a schematic view of a backing bearing roller of a eighteen roll mill of the present invention;
the reference numerals in the drawings are as follows:
1-frame housing assembly 2-pressing cylinder assembly 3-wedge-shaped adjusting mechanism
4-upper supporting roller assembly 5-sliding lining plate 6-upper side supporting assembly
7-anti-entanglement guide plate driving cylinder 8-emulsion injection device 9-anti-entanglement guide plate
10-pass line adjusting device 11-upper intermediate roll assembly 12-upper work roll cartridge
13-anti-tangling guide backing bearing support 14-sliding key
15-lower work roll cassette 16-underside support assembly
17-lower intermediate roll assembly 18-lower support roll assembly
12-work roll box
12-1-roller bearing block 12-2-spring
12-3-pull rod 12-4-horizontal support roller bearing seat
12-5-working roll 12-6-horizontal supporting roll
12-7-nut 12-8-stop block
13-backing bearing support
13-1-backing bearing roller 13-2-supporting rib plate
13-3-backing bearing roller support 13-4-through shaft.
Detailed Description
Embodiments of the present invention are further described below in conjunction with fig. 1-5:
as shown in fig. 1-2, the eighteen-roller mill is a cold rolling mill for rolling metal strips, and the main structure of the mill comprises a frame housing assembly 1, a pressing cylinder assembly 2, a roller system assembly, a side support assembly 6, a wedge-shaped adjusting mechanism 3, an anti-winding guide plate 9 and a rolling line adjusting device 10, wherein the roller system assembly comprises an upper roller system and a lower roller system, and the upper roller system consists of an upper working roller box 12, an upper side support assembly 6, an upper middle roller assembly 11 and an upper supporting roller assembly 4. The lower roll system includes a lower work roll cassette 15, a lower side support assembly 16, a lower intermediate roll assembly 17 and a lower support roll assembly 18. The upper and lower work roll boxes each include a work roll 12-5, a bearing housing 12-1, and horizontal support rolls 12-6 disposed on both sides of the work roll 12-5, and an adjusting mechanism for adjusting the contact force between the horizontal support rolls 12-6 and the work roll 12-5 is designed on the bearing housing 12-1. Referring to fig. 3, the outermost 8 rolls are called backing bearing rolls 13-1, and the arrow represents the direction in which each backing bearing roll 13-1 moves at the time of replacement, and the following is considered with respect to the roll replacement problem: as shown in fig. 2, the upper support assemblies 6 and the lower support assemblies 16 are arranged near the front end of each backing bearing roller, each backing bearing roller 13-1 is arranged on a roller frame, the roller frames are connected with the rear support device through clamping plates, and the roller frames are pulled out by clamping the roller frames through special clamps when being replaced, unlike other eighteenth rollers, 8 backing bearing rollers can be replaced independently, and one backing bearing roller is problematic to replace. The main function of the horizontal support roller 12-6 is a transition roller, which is to apply a supporting force to the work roller through the backing bearing roller, and prevent the work roller from flexing under the action of horizontal force, so the horizontal support roller is called. The working roller is not provided with supporting points and driving mechanisms except for supporting bearings at two ends, so that the working roller is supported and driven by adopting a horizontal supporting roller and a middle roller in an extrusion way in order to avoid bending.
As shown in fig. 2, an anti-entanglement guide 9 is arranged at the inlet and outlet of the rolling mill (the left and right sides of the center in the length direction of the rolling mill), the anti-entanglement guide 9 can slide back and forth along a sliding key 14 arranged on a sliding lining plate 5, an emulsion spraying device 8 is arranged inside the anti-entanglement guide 9, and a backing bearing support 13 comprising a segmented backing bearing roller 13-1 is designed at the front end of the anti-entanglement guide 9 to support a horizontal support roller 12-6. Side support assemblies are arranged above and below the anti-wind guide 9 to drive the segmented backing bearing assemblies by hydraulic cylinders or other driving means to support the horizontal support rollers 12-6. The anti-winding guide plate 9 and the side support assemblies 6 and 16 are jointly arranged on the sliding lining plate 5, and the sliding lining plate 5 can slide up and down along the housing under the drive of the hydraulic cylinder of the wedge-shaped adjusting mechanism 3. In the axial direction of the work rolls (the operation side and the transmission side in the width direction of the rolling mill, which are arranged perpendicularly to the rolling direction, there are two anti-tangling plates, one arranged on the inlet side in the rolling direction, one arranged on the outlet side, the anti-tangling plates being arranged in the roll direction, there are two upper side support fittings 6, one for the work roll inlet and outlet, and one for the roll direction, there are two lower side support fittings 16, one for the work roll inlet and outlet, and one for the roll direction, and there are backing bearing supports 13 mounted on the front ends of the anti-tangling plates 9 and the side support fittings 6, 16, and each backing bearing roll 13-1 is composed of a plurality of backing bearings mounted on one shaft, as shown in fig. 5.
For a eighteen-roller mill, the roller diameter of the working roller is reduced relative to that of eight-roller and six-roller mills, the horizontal deflection of the working roller is obviously increased, the horizontal rigidity is obviously reduced, and the control of the plate shape is greatly influenced. The present invention reduces the horizontal deflection of the work rolls in two ways: on the one hand, the upper and lower work roll boxes 12, 15 are horizontally moved in advance before rolling, so that the horizontal force applied to the work rolls during rolling is reduced; on the other hand, the rigidity of the working roll in the horizontal direction is enhanced by adding a side support, which is illustrated at the inlet side, wherein the side support is derived from two directions, one is that a backing bearing support 13 arranged at the front end of the side support assembly 6 is pushed to move to the inlet side horizontal support roll 12-6 along the sliding track of the side support assembly 6 by a driving hydraulic cylinder in the side support assembly, the inlet horizontal support roll 12-6 is pressed in the direction, the other is that a backing bearing support 13 arranged at the front end of the anti-winding guide plate 9 is arranged, the backing bearing support 13 is integrated with the anti-winding guide plate 9, the side of the anti-winding guide plate is pushed along a sliding key 14 (not shown in the drawing, the sliding key is arranged on a sliding lining plate 5, a sliding groove is arranged at the side surface of the anti-winding guide plate, the anti-winding guide plate can slide back and forth on the sliding key 14) to move to the inlet side horizontal support roll 12-6, and the backing bearing support 13-6 is pressed in the direction, and the backing bearing support 13 with different stress sizes of the backing bearing support 13 on the side support 13 and the anti-winding guide plate 9 are selected to be differently treated. The working roll is supported by the supporting structures of the inlet and the outlet, so that the horizontal rigidity of the working roll is greatly improved, the roll diameter is reduced, and the shape of a finished product is ensured.
As shown in fig. 5, there are 8 specific configurations of backing bearing supports 13. Wherein the backing bearing roller support 13-3 connects the multi-segment backing bearing rollers 13-1 in series through a through shaft 13-4. Each backing bearing roller 13-1 is connected to the ridge of the backing bearing roller bracket 13-3 at intervals by comb-like support rib plates.
The work roll cassettes 12, 15 include a work roll housing 12-1, a work roll 12-5, a horizontal support roll 12-6, and a contact force adjusting device disposed on the housing. The specific principle of the contact force adjusting device is as follows: the working roll bearing seat 12-1 is provided with a stop block 12-8, one end of the pull rod 12-3 is blocked by the stop block 12-8, the other end of the pull rod 12-3 passes through the stop block 12-8 and is connected to the horizontal support roll bearing seat 12-4, the pull rod 12-3 can freely slide in a guide hole of the stop block 12-8, meanwhile, the pull rod 12-3 is provided with a compression spring 12-2 which can be other elastic parts, the spring 12-2 is preloaded between the stop block 12-8 and the nut 12-7 through the matching of threads on the nut 12-7 and the pull rod 12-3, the working roll bearing seat 12-1 is provided with a long hole, the horizontal support roll bearing seat 12-4 can slide along the long hole, and therefore the pre-compression force of the spring 12-2 can be controlled by adjusting the position of the nut 12-7, so that the horizontal support roll 12-6 is kept in contact with the working roll 12-5 at any time and the working roll 12-5 is supported. The function of the elongated holes is that when the side pushing device pushes the horizontal supporting roller, the horizontal supporting roller can freely slide along the elongated holes without being stressed to flex. During operation, the 8 backing bearing rollers 13-1 compress the horizontal support roller 12-6 under each driving force, so that the stability of the working roller 12-5 is ensured. When the working roll 12-5 needs to be replaced, all the anti-winding guide plates 9 and the side support assemblies 6 and 16 are required to be loosened firstly, a certain gap is reserved between the back lining bearing roll 13 and the horizontal support roll 12-6, then the whole working roll boxes 12 and 15 are pulled out of the frame along the roll replacing track, the nuts 12-7 are loosened, a certain gap is reserved between the horizontal support roll 12-6 and the roll surface of the working roll 12-5, and the working roll is convenient to replace. In order to further reduce the horizontal force of the working roll 12-5, a horizontal movement function is designed for the working roll 12-5, thrust is applied to the horizontal support roll 12-6 through the side support assembly 6 and the anti-winding guide plate back lining bearing support 13, the whole working roll boxes 12 and 15 are pushed to slide to a preset position, then the working roll 12-5 is ensured to be clamped by the horizontal support rolls 12-6 at two sides, and strip steel rolling is carried out. The structure of the work roll boxes 12, 15 increases the horizontal rigidity of the work roll 12-5, and reduces the horizontal force through horizontal movement, thereby creating good conditions for ensuring smooth rolling.
When the thicknesses of two sides of the finished strip steel are different, namely, the wedge-shaped plate shape appears during rolling, the invention solves the problem through the wedge-shaped adjusting device 3. The wedge-shaped adjusting device 3 is provided with four hydraulic cylinders which are respectively arranged on an operation side housing and a transmission side housing, the front ends of the hydraulic cylinders are connected with the sliding lining plate 5, and the sliding lining plate 5 can slide up and down along the housing under the driving of the hydraulic cylinders of the wedge-shaped adjusting mechanism 3 due to the fact that the anti-winding guide plate 9 and the side support assemblies 6 and 16 are jointly arranged on the sliding lining plate 5. The four hydraulic cylinders are respectively and independently controlled, the rolling mill can adjust the strokes of the four hydraulic cylinders according to the wedge angle, and the sliding lining plate 5 is pushed to enable the side support back lining bearing support 13 and the back lining bearing support roller 13-1 on the anti-winding guide plate 9 to support the working roller 12-5 in all directions, namely even if the axis of the back lining bearing roller 13-1 is parallel to the axis of the working roller 12-5, the situation that the working roller is not supported due to the crossing can not occur; meanwhile, the working roll bearing seat 12-1 on one side moves upwards, so that the roll gap is suitable for rolling wedge-shaped strips, good flatness of strip steel on the outlet side is ensured, and the problem of wedge-shaped rolling is solved.
The invention has the advantages of ingenious structure, convenient operation and maintenance, capability of ensuring good plate shape of the finished product, quick roll changing, time saving and labor saving, and wide market prospect. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A eighty-high rolling mill, which belongs to a cold rolling mill for rolling metal strips, comprising a pair of working rolls and an intermediate roll which is contacted with the working rolls and is used for driving the working rolls, and is characterized in that: along the conveying direction of the strip, a pair of horizontal support rollers are respectively arranged at the inlet side and the outlet side of the rolling mill, and the horizontal support rollers are respectively contacted with the upper working roller and the lower working roller to support the rolling reaction force loaded on the respective working rollers, so that the working rollers are extruded by the middle roller and the respective pair of horizontal support rollers to be relatively fixed; each horizontal supporting roller is axially provided with a side pushing device which is used for supporting the horizontal supporting roller through a whole roller body from an operation side to a transmission side; when the horizontal support roller is in a working position, the horizontal support roller always keeps line contact with the working roller along the axial direction of the working roller;
the side pushing device comprises a rear end force generating device and a front end contact and pushing part of the horizontal supporting roller, wherein the pushing part of the horizontal supporting roller is arranged along the length of the roller body of the horizontal supporting roller by a plurality of backing bearings, namely a plurality of backing bearings are arranged on a shaft in series at intervals in a segmented mode and are arranged along the length of the roller body of the horizontal supporting roller to form a backing bearing roller; each backing bearing roller always keeps line contact with each corresponding horizontal supporting roller along the axial direction of each corresponding horizontal supporting roller when in a working state; the same horizontal support roller is supported by two backing bearing rollers; the force-generating device and the backing bearing roller are arranged in line with each other so as to apply lateral supporting force to the corresponding working roller through the force-generating device;
the force generating device comprises two types, namely a side support assembly type and an anti-winding guide plate type, wherein the side support assembly type and the anti-winding guide plate type are respectively arranged on the left side and the right side of a working roller of a rolling mill along the conveying direction of a metal strip and are fixed on a sliding lining plate, and two backing bearing rollers are arranged on the outer sides of each horizontal support roller and form an 18-roller system structure together; the 18-roller system structure comprises two anti-winding guide plates, wherein each anti-winding guide plate is arranged along the axial direction of the working roller, one is arranged at the inlet side, and the other is arranged at the outlet side; four side support assemblies are arranged at the inlet side and the outlet side of the rolling mill, one side support assembly is arranged above and below each winding-preventing guide plate at each side, and the side support assemblies are arranged along the roll direction in a full length mode; the backing bearing roller is arranged at the front end of the anti-winding guide plate and the side support assembly.
2. The eighty-high mill of claim 1, wherein: the length of the backing bearing roller is greater than or equal to the width of the rolled strip.
3. The eighty-high mill of claim 1, wherein: in the side support assembly structure, the whole back lining bearing roller is arranged on a side support beam and driven by a hydraulic cylinder with a displacement sensor; the sliding lining board is provided with a sliding key, the side surface of the anti-winding guide plate is provided with a sliding groove, and the anti-winding guide plate is driven by the driving cylinder to slide along the sliding key so as to drive the back lining bearing roller.
4. The eighty-high mill of claim 1, wherein: the upper part and the lower part of the belt material transmission line are respectively provided with a working roll box corresponding to the transmission side and the operation side, namely four working roll boxes are arranged at two ends of the belt material transmission line along the axial direction of the roller; each working roll box comprises a bearing seat, a working roll, a horizontal supporting roll bearing seat and a horizontal supporting roll on two sides of the working roll, and a contact force adjusting device arranged on the horizontal supporting roll bearing seat; the contact force adjusting device is used for adjusting the position of the bearing seat of the horizontal support roller relative to the working roller so as to adjust the gap between the horizontal support roller and the working roller.
5. The eighty-high mill of claim 4, wherein: the contact force adjusting device comprises a stop block, a pull rod and a compression spring; the stop block is arranged on the bearing seat, one end of the pull rod is movably blocked by the stop block, the other end of the pull rod passes through the stop block and is connected to the horizontal support roller bearing seat, an elastic piece and a nut are arranged on the pull rod between the stop block and the horizontal support roller bearing seat, and a pull rod section corresponding to the nut is provided with threads; the bearing seat is provided with a long hole, and the horizontal support roller bearing seat can slide along the long hole; the spring is preloaded between the stop block and the nut through the matching of the threads on the nut and the pull rod, the pre-pressure of the spring is controlled through adjusting the position of the nut, and the horizontal support roller and the working roller are ensured to be kept in contact at all times and support the working roller.
6. The eighty-high mill of claim 1, wherein: the wedge-shaped adjusting device comprises four hydraulic cylinders which are respectively arranged on an operation side housing and a transmission side housing, the front ends of the hydraulic cylinders are connected with a sliding lining plate, and the sliding lining plate can slide up and down along the housing under the driving of the hydraulic cylinders of the wedge-shaped adjusting device due to the fact that the anti-winding guide plate and the side support assembly are jointly arranged on the sliding lining plate; when the incoming material is a wedge-shaped plate, the hydraulic cylinder of the wedge-shaped adjusting mechanism pushes the sliding lining plate to move, the anti-winding guide plate and the side support assembly structure arranged on the sliding lining plate move along with the sliding lining plate, and the sliding distance between the transmission side sliding lining plate and the operation side sliding lining plate can be independently adjusted, so that the tilting of the working roller is corresponding, and the working roller is well supported on the horizontal side; so that the roll gap is suitable for rolling wedge strip.
7. The eighty-high mill of claim 1, wherein: the middle roller can axially float, and the middle roller is provided with a positive and a negative bending roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602539.8A CN107252822B (en) | 2017-07-21 | 2017-07-21 | Eighteen-roller mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602539.8A CN107252822B (en) | 2017-07-21 | 2017-07-21 | Eighteen-roller mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107252822A CN107252822A (en) | 2017-10-17 |
| CN107252822B true CN107252822B (en) | 2023-11-21 |
Family
ID=60025694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710602539.8A Active CN107252822B (en) | 2017-07-21 | 2017-07-21 | Eighteen-roller mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107252822B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107790495A (en) * | 2017-11-28 | 2018-03-13 | 中冶南方工程技术有限公司 | A kind of metal strip rolling mill of the collateral runner of band |
| CN109500091B (en) * | 2018-12-06 | 2024-01-26 | 中冶南方工程技术有限公司 | Side supporting mechanism for working roll of eighteenth roll mill, using method of side supporting mechanism and eighteenth roll mill |
| CN111054752A (en) * | 2019-12-24 | 2020-04-24 | 西安艾蒙希科技有限公司 | High-precision annular strip mill |
| CN114570771A (en) * | 2022-02-11 | 2022-06-03 | 郑孝桐 | Multi-roll numerical control cold rolling mill |
| CN114769318A (en) * | 2022-03-30 | 2022-07-22 | 湖北工业大学 | Roller bearing seat structure capable of detecting horizontal force with high precision |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203370821U (en) * | 2013-07-11 | 2014-01-01 | 陶洪瑞 | Oil cylinder inclined iron adjusting device for supporting work roller side of eighteen-roller mill |
| CN104550239A (en) * | 2014-12-29 | 2015-04-29 | 一重集团大连设计研究院有限公司 | Novel eighteen-roller cold rolling mill |
-
2017
- 2017-07-21 CN CN201710602539.8A patent/CN107252822B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203370821U (en) * | 2013-07-11 | 2014-01-01 | 陶洪瑞 | Oil cylinder inclined iron adjusting device for supporting work roller side of eighteen-roller mill |
| CN104550239A (en) * | 2014-12-29 | 2015-04-29 | 一重集团大连设计研究院有限公司 | Novel eighteen-roller cold rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107252822A (en) | 2017-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107252822B (en) | Eighteen-roller mill | |
| CN102248029B (en) | Pre-straightener for medium and thick plates | |
| CN101522326A (en) | Rolling mill and method for controlling a rolling mill | |
| CN202087634U (en) | Medium plate prestraightening machine | |
| CN202079087U (en) | Adjustable vertical roll side compression device | |
| CN102228904A (en) | Novel twenty-roller cold-rolling mill | |
| CN104438318B (en) | The interchangeable cold-rolling mill of a kind of multiple roll | |
| CN104550239A (en) | Novel eighteen-roller cold rolling mill | |
| CN207138503U (en) | A kind of eighteen-high mill | |
| CN103157666B (en) | Plate strip rolling mill roller adjusting device | |
| CN105964691A (en) | Novel ten-roller steel plate cold-rolling mill structure | |
| CN108817087B (en) | Compact six-roller mill and working method | |
| CN203316490U (en) | Horizontal moving device of operation roll of mill | |
| CN103658191B (en) | Side supporting device of working roll of cold rolling machine | |
| CN115592082A (en) | Compression roller pressing device and continuous casting system | |
| CN202123101U (en) | Double-convexity-adjustor cold-rolling mill with twenty rolls | |
| CN107470359B (en) | Horizontal force supporting mechanism for working roller of eighteen-roller mill | |
| CN201244579Y (en) | Device for horizontally moving work roll of invertible cold rolling mill | |
| CN203556634U (en) | Multi-roller replaceable cold-rolling mill | |
| CN101780481A (en) | Five-roll tensioner | |
| CN109500101B (en) | Side guide device | |
| CN104907336A (en) | Multi-rack type multi-roller rolling mill | |
| CN202238886U (en) | Outer installation frame with upper rolling line adjusting device for roll box of cold-rolling mill | |
| CN202114065U (en) | HC six-roller mill | |
| CN201040286Y (en) | Four-column prestressing frame four-roller reversible cold mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |