CN211304292U

CN211304292U - Five-roller straightener with floating pinch roller upper roller

Info

Publication number: CN211304292U
Application number: CN201920691889.0U
Authority: CN
Inventors: 费新; 周晓兵; 杭永海; 虞海东; 季忠海
Original assignee: Jiangyin Comat Metal Products Co ltd
Current assignee: Jiangyin Comat Metal Products Co ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-08-21
Anticipated expiration: 2029-05-15

Abstract

The utility model relates to a five-roller straightener with floating pinch roller upper rollers, which comprises a frame, a straightening roller group, a pinch roller group, a large oil cylinder, a small oil cylinder, a lifter, a motor, a speed reducer and a universal joint; the straightening roller group is fixed on the frame and comprises an upper straightening roller and a lower straightening roller, the lower straightening roller is arranged on the frame, two ends of the upper straightening roller are respectively fixed with a movable bearing seat, a lifting device is connected with the movable bearing seats, the upper part of the upper straightening roller is provided with a large oil cylinder fixed on the frame, and the large oil cylinder is connected with the lifting device through a fixing plate; the pinch roll set is arranged at an inlet of the straightener and comprises a lower pinch roll and an upper pinch roll, small oil cylinders are respectively arranged on small bearing blocks at two ends of the upper pinch roll, and a sliding rail for the small bearing blocks to move is arranged on the rack; the outer side of the frame is provided with a universal joint which is connected with a speed reducer, and the speed reducer is connected with a motor; the five straightening rolls of the straightening roll group are all connected with universal joints, and the upper pinch roll and the lower pinch roll of the pinch roll group are all connected with universal joints.

Description

Five-roller straightener with floating pinch roller upper roller

Technical Field

The utility model relates to a belted steel finishing field, especially a five roller straightener that roller floated on pinch roll.

Background

According to the large deformation straightening method in the parallel roll straightening theory, the straightening effect can be achieved by three times of reverse bending, so that the straightening requirement can be met by setting the straightening machine with at least five rolls. In the production process of cold-rolled strip steel, the plate shape quality of the cold-rolled strip steel is improved through the finishing of a double temper mill, and a five-roller straightener is additionally arranged between an uncoiler and the double temper mill, so that the double temper mill can be effectively assisted to improve the flatness of the cold-rolled strip steel; during uncoiling, the five-roller straightener can effectively improve the head condition of the strip steel and is convenient for threading; when the rolling is normally leveled, the plate shape can be improved and the inlet tension can be effectively controlled by properly adjusting the rolling reduction of the straightening roll in cooperation with a leveler; when the machine is stopped, the five-roller straightener can effectively clamp the strip steel and maintain the tension of the machine set; although the five-roller straightener has poor straightening precision, the five-roller straightener has a simple structure and flexible use, can carry out primary treatment on obvious buckling, wave bending and the like on the surface of the strip steel, and can greatly improve the working efficiency of the double flattener; according to the characteristic that the strip steel can be reversely bent for many times, the oxide layer on the surface of the strip steel is loosened before the procedure of removing the oxide layer, and the rust and the like are more effectively removed.

Through long-term use, five-roller straightener or nine-roller straightener, eleven-roller straightener and the like are also continuously improved, such as the Chinese utility model patent: nine-roll straightening machine (No. CN201147766Y) with different roll diameters provides a nine-roll straightening machine for adjusting the rolling reduction of a pinch roll and an upper straightening roll, which can adjust the rolling reduction of the gaps of an upper pinch roll, a lower pinch roll and an upper straightening roll group according to the thickness and the width of a strip steel, can relatively improve the straightening precision of the straightening machine, but still adopts the conventional arrangement of an upper machine base and a lower machine base, the upper machine base is opened through a large-scale oil cylinder, and a certain angle is formed between the opened upper machine base and the lower machine base; after the strip steel enters the upper part of the lower straightening roll, when the upper seat is closed, the upper straightening roll is sequentially contacted with the surface of the strip steel, the strip steel is easily displaced or the surface of the strip steel is easily scratched, a large oil cylinder and a corresponding driving device are needed for opening and closing the upper seat, the resource waste is caused, and the production cost is increased.

Chinese utility model patent: an automatic threading device (No. CN201579341U) of a pinch roll straightening machine discloses a structure of a pinch roll lower roll floating type pinch roll straightening machine, wherein a pinch roll lower roll is driven by an independent air cylinder, and an upper roll of a straightening roll adopts another driving device, so that the problem of automatic threading of a steel strip which is coiled downwards is solved, but the structure increases the complexity of the system, and the straightening precision and the like cannot be improved.

Other enterprises with straightening requirements have also researched and developed straightening machines, for example, the chinese utility model patent applied by Jp Steel platform Co: the roller straightening machine (No. CN202921693U) can straighten the cut metal plate back and forth, it adopts eleven roller structures, there is a pinch roller structure at both ends, the upper roller of the pinch roller adopts the oil cylinder to control alone, six upper straightening rollers adopt the structure of the multi-layer frame oil cylinder control, upper supporting roller to compress tightly to adjust the reduction, mainly solve the sheet straightening problem with large yield strength, its straightened sheet size is generally between 6-8mm, the driving force requirement to oil cylinder, drive unit, etc. is relatively large, it is difficult to be used in the straightening of the cold-rolled strip steel below 2 mm.

Therefore, further development of the five-roll leveler is necessary.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a five-roller straightener, its pinch roll and straightener roll separately control, can prevent belted steel scotch, reduce the power requirement, and the amount of rolling down of going up the straightener roll can accurate control, has improved the straightening precision.

In order to achieve the aim, the utility model provides a five-roller straightener with floating pinch roller upper rollers, which comprises a frame, a straightening roller group, a pinch roller group, a large oil cylinder, a small oil cylinder, a lifter, a motor, a speed reducer and a universal joint; the straightening roll group is fixedly arranged on the rack and comprises two upper straightening rolls and three lower straightening rolls with the same roll diameter, the lower straightening rolls are fixedly arranged on the rack through bearing seats, the upper roll surfaces of the three lower straightening rolls are positioned on the same horizontal plane, two ends of each upper straightening roll are respectively fixed with a movable bearing seat, a guide rail for the movable bearing seats to move up and down is arranged on the rack, the movable bearing seats can be fixed on the rack, two ends of each movable bearing seat are respectively connected with a lifting device, the upper part of each movable bearing seat is provided with a large oil cylinder fixed on the rack, and the large oil cylinder is connected with the lifting devices through fixing plates; the pinch roll set is arranged at an inlet of the straightener and comprises a fixedly arranged lower pinch roll and a floating upper pinch roll, small oil cylinders are respectively arranged on small bearing blocks at two ends of the upper pinch roll, a slide rail for the small bearing blocks to move is arranged on the rack, and a fixed guide plate is arranged between the pinch roll set and the straightening roll set and used for a steel strip to be straightened to transit; a universal joint connected with the straightening roller set and the pinch roller set is arranged on the outer side of the frame along the axial direction of the straightening roller set and the pinch roller set, the universal joint is connected with the speed reducer, and the speed reducer is connected with the motor; the five straightening rollers of the straightening roller group are all connected with universal joints, and the upper pinch roller and the lower pinch roller of the pinch roller group are all connected with the universal joints.

Further, the lifting device is a lifter.

Furthermore, the lifter is a turbine screw type lifter or a lifter controlled by a servo motor.

Furthermore, the lifting device is a screw rod lifting device.

Furthermore, the straightening roll and the universal joint are connected through flanges, and the upper pinch roll, the lower pinch roll and the universal joint are also connected through flanges.

Further, the movable bearing seat is fixed on the rack through bolts and nuts.

When the utility model is used, when the strip steel 10 to be straightened is put down from the uncoiler, the upper pinch roll and the upper straightening roll are both in an open state, after the strip steel 10 to be straightened is sent into the position of the straightening roll group, the upper pinch roll is put down through the small oil cylinder, the strip steel 10 to be straightened is fixed at the pinch roll group, the large oil cylinder is started, the upper straightening roll is put down and is contacted with the strip steel 10 to be straightened, then the gap between the upper straightening roll and the lower straightening roll is adjusted through adjusting the height of the lifter, the straightening precision is improved as much as possible, after the straightening roll group is adjusted in place, the small oil cylinder of the upper pinch roll is loosened, the strip steel 10 to be straightened is adjusted, the position and the tension of the strip steel 10 are in the best state, then the small oil cylinder is put down, the strip steel 10 to be straightened is pressed, the uncoiler and the straightener are started simultaneously after the strip steel 10 to be straightened is pressed in place, the motor drives, the strip steel 10 to be straightened is driven to move forwards, so that the straightening of the strip steel is completed.

Compared with the prior art, the utility model has the following advantages:

(1) the inlet pinch roll set and the straightening roll set of the straightener separately act, and are respectively provided with a pressing oil cylinder, so that the requirement on the power of a driving device is low, and the situation that the strip steel is displaced to cause scratches in the closing process of the straightening roll set can be prevented;

(2) the pinch roll group and the straightening roll group move vertically, so that the plate shape correction is improved to a certain extent;

(3) the rolling reduction of the upper straightening roller can be controlled by a servo motor through a lifter, so that the working efficiency can be improved, and the precision is improved.

Drawings

FIG. 1 is a front view of a five-roll straightener with floating upper rolls of pinch rolls of the present invention;

FIG. 2 is a side view of the five-roll straightener with floating upper rolls of the pinch rolls of the present invention;

FIG. 3 is an enlarged view of the A part of the five-roller straightener with floating upper rollers of the pinch rollers of the utility model;

fig. 4 is the schematic view of the working state of the five-roller straightener with floating upper rollers of the pinch rollers.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, the five-roller straightener with floating pinch roller comprises a frame 1, a straightening roller group 2, a pinch roller group 3, a large oil cylinder 4, a small oil cylinder 5, a lifter 6, a motor 7, a speed reducer 8 and a universal joint 9; the straightening roller group 2 is fixedly arranged on the frame 1 and comprises two upper straightening rollers 21 and three lower straightening rollers 22 with the same roller diameter, the lower straightening rollers 22 are fixedly arranged on the frame 1 through bearing seats 23, the upper roller surfaces of the three lower straightening rollers 22 are positioned on the same horizontal plane, two ends of each upper straightening roller 21 are respectively fixed with a movable bearing seat 24, the movable bearing seats 24 can move up and down along a guide rail 101 arranged on the frame 1, the movable bearing seats 24 can be fixed on the frame through fixing bolts and nuts after moving to the right position, two ends of each movable bearing seat 24 are respectively connected with a lifter 6, the upper part of each movable bearing seat 24 is provided with a large oil cylinder 4 fixed on the frame 1, and the large oil cylinders 4 are connected with the lifters 6 through fixing plates (not shown); the pinch roll set 3 is arranged at an inlet of the straightener and comprises a fixedly arranged lower pinch roll 31 and a floating upper pinch roll 32, small oil cylinders 5 are respectively arranged on small bearing blocks at two ends of the upper pinch roll 32 and can drive the small bearing blocks to move along a slide rail arranged on the rack, and a fixed guide plate is arranged between the pinch roll set 3 and the straightening roll set 2 and used for a steel strip to be straightened to transit; the outer side of the rack 1 is provided with a universal joint 9 in flange connection with the straightening roll group 2 and the pinch roll group 3 along the axial direction of the straightening roll group 2 and the pinch roll group 3, the universal joint 9 is connected with a speed reducer 8, and the speed reducer 8 is connected with a motor 7; five straightening rolls of the straightening roll group 2 are all connected with universal joints 9, and an upper pinch roll 32 and a lower pinch roll 31 of the pinch roll group 3 are both connected with the universal joints 9 through flanges.

In other embodiments, the elevator 6 may also adopt other elevating devices, such as a screw rod elevating device, and the like, and the elevator 6 may adopt a worm gear screw type elevator, and may also adopt a servomotor controlled elevator.

The position control of the upper pinch roll 32 and the upper straightening roll 21 may be performed by other driving mechanisms such as an air cylinder instead of the oil cylinder.

The utility model relates to a five-roller straightener with floating pinch roll upper roll, as shown in figure 4, when a strip steel 10 to be straightened is put down from an uncoiler 11, an upper pinch roll 32 and an upper straightening roll 21 are both in an open state, after the strip steel 10 to be straightened is sent to the position of a straightening roll group 2, the upper pinch roll 32 is put down through a small oil cylinder 5, the strip steel 10 to be straightened is fixed at the position of the pinch roll group 3, a large oil cylinder 4 is started, the upper straightening roll 21 is put down and is contacted with the strip steel 10 to be straightened, then the gap between the upper and lower straightening rolls is adjusted by adjusting the height of a lifter 6, the straightening precision is improved as much as possible, after the straightening roll group 2 is adjusted in place, the small oil cylinder 5 of the upper pinch roll 32 is loosened, the strip steel 10 to be straightened is adjusted, the position and the tension are in the best state, then the small oil cylinder 5 is put down, the strip steel 10 to be straightened is pressed, after the strip steel is tightly pressed in place, the uncoiler and the straightening machine are started at the same time, the motor 7 drives the speed reducer 8 to drive the straightening roll and the pinch roll to move through the universal joint 9, and the strip steel 10 to be straightened is driven to move forwards, so that the straightening of the strip steel is completed.

In the utility model, the inlet pinch roll set 3 and the straightening roll set 2 of the straightener are separately operated, the self pressing oil cylinders are respectively arranged, after the strip steel extends into a certain length, the inlet pinch roll set 3 is closed, and the strip steel is prevented from generating displacement and causing scratch in the process of closing the straightening roll set 2; the pinch roll group 3 and the straightening roll group 2 move vertically, so that the plate shape is corrected to a certain extent; the amount of reduction of the upper straightening roll 21 can be controlled by the elevator 6 using a servo motor, so that the working efficiency can be improved and the accuracy can be improved.

In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The five-roller straightener with the floating pinch roller upper roller is characterized by comprising a rack, a straightening roller set, a pinch roller set, a large oil cylinder, a small oil cylinder, a lifter, a motor, a speed reducer and a universal joint; the straightening roll group is fixedly arranged on the rack and comprises two upper straightening rolls and three lower straightening rolls with the same roll diameter, the lower straightening rolls are fixedly arranged on the rack through bearing seats, the upper roll surfaces of the three lower straightening rolls are positioned on the same horizontal plane, two ends of each upper straightening roll are respectively fixed with a movable bearing seat, a guide rail for the movable bearing seats to move up and down is arranged on the rack, the movable bearing seats can be fixed on the rack, two ends of each movable bearing seat are respectively connected with a lifting device, the upper part of each movable bearing seat is provided with a large oil cylinder fixed on the rack, and the large oil cylinder is connected with the lifting devices through fixing plates; the pinch roll set is arranged at an inlet of the straightener and comprises a fixedly arranged lower pinch roll and a floating upper pinch roll, small oil cylinders are respectively arranged on small bearing blocks at two ends of the upper pinch roll, a slide rail for the small bearing blocks to move is arranged on the rack, and a fixed guide plate is arranged between the pinch roll set and the straightening roll set and used for a steel strip to be straightened to transit; a universal joint connected with the straightening roller set and the pinch roller set is arranged on the outer side of the frame along the axial direction of the straightening roller set and the pinch roller set, the universal joint is connected with the speed reducer, and the speed reducer is connected with the motor; the five straightening rollers of the straightening roller group are all connected with universal joints, and the upper pinch roller and the lower pinch roller of the pinch roller group are all connected with the universal joints.

2. The pinch roll upper roll floating five roll straightener of claim 1, wherein the lifting means is an elevator.

3. The pinch roll upper roll floating five roll straightener of claim 2, wherein the elevator is a turbine screw elevator or an elevator controlled by a servo motor.

4. The upper roll floating five roll straightener of pinch rolls as claimed in claim 1 wherein the lifting means is a lead screw lifting means.

5. The pinch roll upper roll floating five roll straightener as claimed in claim 1, wherein the straightening roll and the universal joint are flange connected, and the upper pinch roll, the lower pinch roll and the universal joint are flange connected.

6. The pinch roll upper roll floating five roll straightener of claim 1, wherein the movable bearing blocks are secured to the frame by bolts and nuts.