A roller straightening machine and straightening method

Abstract

The invention discloses a roller straightening machine and a straightening method, wherein the pinch roller pressing cylinder, the pinch roller, the upper straightening roller pressing cylinder, the upper straightening roller and the lower straightening roller system are all installed on a frame, a plurality of upper straightening rollers are arranged at the upper end of the lower straightening roller system, wherein there are a plurality of upper straightening roller pressing cylinders, wherein the upper straightening roller pressing cylinders are arranged at and connected to the corresponding upper ends of the upper straightening rollers, the pinch rollers include an upper pinch roller roller and a lower pinch roller roller, wherein the upper pinch roller roller is arranged at the upper end of the lower pinch roller roller, wherein the top height of the lower pinch roller roller is in the same horizontal plane as the top height of the lower straightening roller system, the pinch roller pressing cylinder is arranged at and connected to the top of the upper pinch roller roller, the straightening roller transmission assembly is respectively connected to the plurality of upper straightening rollers and the lower straightening roller system, wherein the pinch roller transmission assembly is respectively connected to the upper pinch roller roller and the lower pinch roller roller, wherein the pinch roller pressing cylinder and the plurality of upper straightening roller pressing cylinders are respectively connected to a control assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of straightening machines, and specifically relates to a 5-roller, 7-roller or 9-roller straightening machine used in an unwinding section of a pickling and continuous rolling unit, a galvanizing unit or other similar units in a cold rolling mill in the steel field, and more particularly to a roller straightening machine and a straightening method. Background Art

[0002] In the steel industry, the unwinding section of the continuous rolling unit, galvanizing unit or other similar units of the cold rolling mill is usually equipped with a roller straightener (3-roller, 5-roller, 7-roller or 9-roller form) to straighten the head of the raw strip or continuously straighten the strip to improve the plate shape of the raw material and facilitate its entry into the subsequent process. Under the existing technical conditions, if the overlap of this straightener is adjusted by the lifting and lowering of the upper straightening roller, the upper straightening roller must rely on the upper straightening roller bearing seat to guide each other when lifting and lowering. In addition, the straightening machine frame under the existing technical conditions is generally an open frame or a two-piece frame.

[0003] Under existing technical conditions, the problems existing in straightening machines are: 1) The bearing seat is used for guidance, which has poor force and often damages the bearings and working rolls; 2) The upper working rolls cannot be replaced independently. When replacing a certain upper working roll, all upper working rolls must be removed; 3) When replacing the upper working rolls, the assembly workload is large; 4) The open frame or two-piece frame has poor rigidity and large frame deformation, which affects the straightening quality; 5) When the working speed is higher than 300 meters / minute, faults occur frequently; 6) The motor-driven worm gear reducer is used for pressing down, which cannot achieve overload protection and high-frequency vibration impact, and the worm gear reducer is frequently damaged. The technology of the present invention can solve the above-mentioned shortcomings and meet market demand. Utility Model Content

[0004] The object of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a roller straightening machine and a straightening method, which overcome the problems in the prior art that 1: bearing seat guidance is adopted, the force is not good, and the bearings and working rolls are often damaged; 2: the upper working rolls cannot be replaced independently, and when replacing a certain upper working roll, all the upper working rolls must be removed; 3: the assembly workload is large when replacing the upper working rolls; 4: the open frame or the two-piece frame has poor rigidity and the frame deformation is large, which affects the straightening quality; 5: when the working speed is higher than 300 meters / minute, faults occur frequently; 6: the pressing adopts the form of a motor-driven worm gear reducer, which cannot achieve overload protection and high-frequency vibration impact, and the worm gear reducer is frequently damaged.

[0005] In order to solve the technical problem, the technical solution of the present invention is: a roller straightening machine, including a pinch roller pressing cylinder, a frame, a pinch roller, an upper straightening roller pressing cylinder, an upper straightening roller, a lower straightening roller system, a straightening roller transmission assembly, a pinch roller transmission assembly and a control assembly, wherein the pinch roller pressing cylinder, the pinch roller, the upper straightening roller pressing cylinder, the upper straightening roller, and the lower straightening roller system are all installed on the frame, the upper straightening roller is multiple, wherein multiple upper straightening rollers are arranged at the upper end of the lower straightening roller system, wherein the upper straightening roller pressing cylinder is multiple, wherein the upper straightening roller pressing cylinder is arranged at the upper end of the corresponding upper straightening roller and connected Then, the axis of the pinch roller is parallel to the axis of the lower straightening roller system, wherein the pinch roller includes an upper pinch roller and a lower pinch roller, wherein the upper pinch roller is arranged at the upper end of the lower pinch roller, wherein the top height of the lower pinch roller is in the same horizontal plane as the top height of the lower straightening roller system, the pinch roller pressing cylinder is arranged at the top of the upper pinch roller and connected, the straightening roller transmission assembly is respectively connected to multiple upper straightening rollers and the lower straightening roller system, wherein the pinch roller transmission assembly is respectively connected to the upper pinch roller and the lower pinch roller, wherein the pinch roller pressing cylinder and multiple upper straightening roller pressing cylinders are respectively connected to the control assembly.

[0006] Preferably, the frame includes a connecting plate, an operating side arch, a base, a first crossbeam, a second crossbeam, a third crossbeam, a fourth crossbeam, a transmission side arch, a pinch roller guide window, a lower straightening roller system installation window, an upper straightening roller independent guide window, a pinch roller pressure cylinder installation hole and an upper straightening roller pressure cylinder installation hole, wherein the operating side arch and the transmission side arch are relatively fixed to the base by bolts, wherein the base is installed on the equipment foundation, the first crossbeam, the second crossbeam, the third crossbeam and the fourth crossbeam respectively connect the sides of the operating side arch and the transmission side arch from top to bottom by bolts and locating pins, wherein the connecting plate connects the tops of the operating side arch and the transmission side arch by bolts and locating pins, the pinch roller guide window is arranged between the operating side arch and the transmission side arch for installing the pinch roller upper roller and the pinch roller lower roller, wherein the pinch roller guide window is in the shape of an "8" structure The structure is as follows: the lower straightening roller system installation window is arranged between the operating side archway and the transmission side archway, and the lower straightening roller system installation window is arranged in parallel with the pinch roller guide window, wherein the lower straightening roller system installation window is used to install the lower straightening roller system, the upper straightening roller independent guide window is arranged at the top of the lower straightening roller system installation window, wherein the upper straightening roller independent guide window is used to install the upper straightening roller, the pinch roller pressing cylinder installation hole is arranged at the top of the pinch roller guide window, wherein the pinch roller pressing cylinder installation hole is used to install the pinch roller pressing cylinder, the upper straightening roller pressing cylinder installation hole is arranged at the top of the upper straightening roller independent guide window, wherein the upper straightening roller pressing cylinder installation hole is used to install the upper straightening roller pressing cylinder, and the pinch roller guide window, the lower straightening roller system installation window, the upper straightening roller independent guide window The operating side and the transmission side are all provided with a pressure plate to prevent the pinch roller or the straightening roller from axially stringing.

[0007] Preferably, the steel plate thickness of the operating side arch and the transmission side arch is 50 to 150 mm, and can be processed from a whole piece of steel plate or integrally cast. The third crossbeam is arranged at the upper straightening roller independent guide window to improve the rigidity and strength of the upper straightening roller independent guide window, wherein the fourth crossbeam is arranged at the bottom of the lower straightening roller system installation window to provide support for the lower straightening roller system installation window.

[0008] Preferably, the lower end of the pinch roller pressing cylinder is flange-mounted and fixed in the pinch roller pressing cylinder mounting hole by bolts, wherein the lower end of the pinch roller pressing cylinder is connected to the pinch roller cylinder joint by a thread, and the bottom of the pinch roller cylinder joint is connected to the top of the transition joint by a pin, wherein the bottom of the transition joint is connected to the bearing seats on both sides of the pinch roller upper roller by bolts, wherein the bearing seats on both sides of the pinch roller upper roller and the upper part of the pinch roller guide window form a sliding pair with a clearance fit, and the pinch roller lower roller is installed on the lower part of the pinch roller guide window, wherein the bearing seats on both sides of the pinch roller lower roller and the lower part of the pinch roller guide window form a sliding pair with a clearance fit, and the operation side and transmission side of the pinch roller guide window are both provided with pinch roller pressure plates, wherein the pinch roller pressure plates are fixed to the frame by bolts to constrain the axial stringing of the pinch roller upper roller and the pinch roller lower roller, and the pinch roller upper roller will rise or fall as the pinch roller pressing cylinder extends and retracts.

[0009] Preferably, the lower end of the upper straightening roller pressing cylinder is flange-mounted and fixed in the upper straightening roller pressing cylinder mounting hole by bolts, wherein the lower end of the upper straightening roller pressing cylinder is connected to the upper straightening roller pressing cylinder joint passing through the graphite sleeve, wherein the graphite sleeve is fixed in the frame by bolts, one end of the upper straightening roller pressing cylinder joint passes through the inner hole of the graphite sleeve and forms a sliding pair with a clearance fit therewith and is connected to the lower end of the upper straightening roller pressing cylinder by threads inside the frame, wherein the other end of the upper straightening roller pressing cylinder joint is connected to the bearing seat of the upper straightening roller through a pressure block, wherein the pressure block is fixed on the bearing seat of the upper straightening roller by bolts, the graphite sleeve, the upper straightening roller pressing cylinder The joint, the pressure block and the upper straightening roller are arranged inside the upper straightening roller independent guide window, and the upper straightening roller is composed of an upper straightening roller working roller and two upper straightening roller bearing seats, wherein the two upper straightening roller bearing seats are respectively arranged on the operation side and the transmission side of the upper straightening roller working roller, wherein the two sides of the upper straightening roller bearing seat form a clearance fitting sliding pair with the upper straightening roller independent guide window, and upper straightening roller pressure plates are provided on both sides of the upper straightening roller independent guide window, wherein the upper straightening roller pressure plates are fixed to the frame by bolts to constrain the axial stringing of the upper straightening roller, and the upper straightening roller pressing cylinder can drive the upper straightening roller to rise or fall independently in the upper straightening roller independent guide window, thereby adjusting the overlap required for straightening.

[0010] Preferably, the lower straightening roller system is installed as a whole in the lower straightening roller system installation window, wherein the lower straightening roller system comprises lower straightening roller system working rollers and two groups of lower straightening roller system bearing seats, wherein the two groups of lower straightening roller system bearing seats are respectively arranged on the operation side and the transmission side of the lower straightening roller system working rollers, wherein both sides of the lower straightening roller system bearing seats form a sliding pair with a clearance fit with the lower straightening roller system installation window, lower straightening roller system pressure plates are provided on both sides of the lower straightening roller system installation window, wherein the lower straightening roller system pressure plates are fixed to the frame by bolts to constrain the axial stringing of the lower straightening roller system, the lower straightening roller system does not rise or fall as a whole, wherein the lower straightening roller system bearing seats are an integral structure.

[0011] Preferably, the straightening roller transmission assembly includes a frequency conversion motor, a reducer, a gear distribution box and a universal coupling, wherein the frequency conversion motor is connected to the reducer through a coupling, wherein the reducer is connected to the gear distribution box through a coupling, wherein the gear distribution box is connected to multiple upper straightening rollers and lower straightening rollers through universal couplings respectively; the pinch roller transmission assembly includes a pinch roller transmission frequency conversion motor, a pinch roller reducer and a pinch roller universal coupling, wherein the pinch roller transmission frequency conversion motor is connected to the pinch roller reducer through a coupling, wherein the pinch roller reducer is connected to the upper pinch roller and the lower pinch roller through the pinch roller universal couplings respectively.

[0012] Preferably, the control component includes a servo valve, a pressure sensor, a displacement sensor and a controller, wherein an upper straightening roller pressing cylinder is provided above the transmission side and the operating side of each upper straightening roller, wherein the upper straightening roller pressing cylinder is connected to the servo valve through a pipeline, wherein the servo valve and the controller are connected through a cable, and a pressure sensor is provided on the oil inlet pipeline of the rodless cavity of the upper straightening roller pressing cylinder for measuring the pressure of the rodless cavity, wherein a displacement sensor is provided inside for accurately measuring the extension amount of the cylinder, and the controller is a single-chip microcomputer.

[0013] Preferably, a straightening method of a roller straightening machine as described in any one of the above items comprises the following steps:

[0014] Step 1) calibrate the upper straightening roller and the lower straightening roller system at the "zero position" state, set the "open" state value, the "roller gap open" state value and the "roller gap closed" state value, and set the protection pressure value;

[0015] Step 2) Press the upper roller of the pinch roller down to hold the head of the strip, and rotate and drag the strip into the frame, so that the upper straightening roller and the lower straightening roller system enter the "closed roller gap" state, and then let the strip to be straightened enter the straightening machine for straightening. During the straightening process, the control component continuously adjusts the overlap amount so that the change does not exceed 0.05mm. At the same time, the control component measures the pressure measurement value in the rodless cavity of the upper straightening roller pressing cylinder in real time. The sum of the pressure measurement values ​​on the transmission side and the operating side of the same upper straightening roller is the straightening pressure of the upper straightening roller;

[0016] Step 3) When the straightening pressure is greater than the set protection pressure value, the roller quickly enters the "roller gap opening" state, and an alarm is sounded to remind the staff to check whether the straightened strip is out of range;

[0017] Step 4) When a certain upper straightening roller fails to work, the control component is operated to put it in the "open" state, and the other upper straightening rollers work normally without being affected;

[0018] Step 5) When it is necessary to replace an upper straightening roller, the upper straightening roller is lowered onto the lower straightening roller system by operating the control component, and then it is pulled out of the line together with the lower straightening roller system, and the new upper straightening roller is placed at the corresponding position of the lower straightening roller system and pushed into the straightening machine frame.

[0019] Preferably, the "zero position" state calibration method in step 1) is to place a calibration plate between the upper straightening roller and the lower straightening roller system, and operate the upper straightening roller to press the oil cylinder piston rod to extend through the control component to make the upper straightening roller descend, so that the upper straightening roller contacts the upper surface of the calibration plate, and confirm that the operating side and the transmission side of the upper straightening roller are in contact with the calibration plate without a gap, and read and record the measured value from the control component. The measured value plus the thickness value of the calibration plate is the zero position state, and the control component records this position and uses it as a reference for controlling the adjustment of the overlap amount of the upper straightening roller and the lower straightening roller system. In the "zero position" state, the upper straightening roller presses the oil cylinder piston rod to extend, but the overlap amount of the upper straightening roller and the lower straightening roller system is zero;

[0020] Set the "open" state value, that is, the upper straightening roller rises to the highest position, at which time the piston rod of each upper straightening roller pressing down cylinder is fully retracted;

[0021] To set the "roll gap opening" state value, you need to set the "roll gap opening" value in the control component and make the control component record the value. The "roll gap opening" state is 2mm to 3mm larger than the maximum thickness of the strip that the straightening machine can straighten. At this time, the piston rod of the upper straightening roller pressing down cylinder also extends;

[0022] Set the "closed roll gap" state value, that is, the upper straightening roll and the lower straightening roll overlap each other to produce an overlap amount, set the overlap amount required by the process in the control component, and make the control component record the value. The overlap amount can be adjusted in real time as needed;

[0023] Set the protection pressure value. Set the protection pressure value in the control component, that is, when the straightening pressure is greater than the protection pressure value, adjust the straightening machine to enter the "open roll gap" state.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] (1) Each upper straightening roller of the straightening machine of the present invention has an independent guide window, namely, an upper straightening roller independent guide window. The upper straightening roller can be driven to rise or fall independently in the upper straightening roller independent guide window by pressing the oil cylinder down, thereby adjusting the overlap required for straightening. The lifting and lowering does not require the upper straightening roller bearing seat to guide, thus achieving true independent adjustment, so that the lifting and lowering of each upper straightening roller is not affected by other upper straightening rollers, thereby increasing the flexibility of the straightening machine and reducing the maintenance workload. At the same time, the straightening roller bearing seat has good force, and the axial stringing of the upper straightening roller is constrained by fixing it on the frame through the upper straightening roller pressure plate, so that the axial stringing is small.

[0026] (2) In the present invention, when a certain upper straightening roller fails to work, the control component is operated to be in the "open" state, and other upper straightening rollers work normally without being affected. When a certain upper straightening roller needs to be replaced, the control component is operated to lower the upper straightening roller onto the lower straightening roller system, and then the upper straightening roller is pulled out of the line together with the lower straightening roller system, and the new upper straightening roller is placed at the corresponding position of the lower straightening roller system and pushed into the straightening machine frame. This process does not require disassembling other upper straightening rollers, thereby improving work efficiency and reducing workload.

[0027] (3) The straightening machine of the present invention adopts a closed frame, the sides of the operating side archway and the transmission side archway are connected by a crossbeam, and the top is connected by a connecting plate to form a complete frame. The thickness of the steel plate of the operating side archway and the transmission side archway is 50 to 150 mm, and can be processed from a whole piece of steel plate or integrally cast. The frame of the present invention has good rigidity, high precision, small deformation, and can significantly improve the straightening quality;

[0028] (4) The operating side and the transmission side of each upper straightening roller of the present invention are designed with an upper straightening roller pressing cylinder, a servo valve, a displacement sensor and a pressure sensor for accurately and independently controlling the pressing amount and the straightening pressure closed-loop control. The oil inlet pipeline of the rodless chamber of the upper straightening roller pressing cylinder of the present invention is designed with a pressure sensor to realize the closed-loop control of the straightening pressure and overload protection, thereby avoiding damage to the equipment due to overload. At the same time, a control component is used to realize the adjustment of the pressing amount, which can adapt to the high-speed operation of the equipment on the one hand, and realize overload protection on the other hand;

[0029] (5) The present invention has a simple structure, is easy to use, has a good control effect, is highly practical, has a low assembly cost, and is safe and reliable during operation. The maximum operating speed can reach 500 m / min. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 , a schematic diagram of the main structure of a roller straightening machine of the present invention;

[0031] Figure 2 , a schematic diagram of the structure of a roller straightening machine according to the present invention, viewed from the top on the right side;

[0032] Figure 3 , a schematic diagram of the control principle of the upper straightening roller pressing down cylinder of a roller straightening machine of the present invention;

[0033] Figure 4 The present invention Figure 1 A-direction view;

[0034] Figure 5 , a schematic diagram of the frame structure of a roller straightening machine of the present invention;

[0035] Figure 6 The present invention Figure 5 K-direction view;

[0036] Figure 7 , a schematic diagram of the structure of an upper straightening roller of a roller straightening machine of the present invention;

[0037] Figure 8 , a schematic diagram of the structure of the lower straightening roller system of a roller straightening machine of the present invention;

[0038] Fig. 9 , a schematic diagram of the calibration of the upper straightening roller and the lower straightening roller system of a roller straightening machine of the present invention.

[0039] Description of Reference Numerals

[0040] 1-pinch roller pressing cylinder, 2-frame, 3-pinch roller cylinder joint, 4-transition joint, 5-pinch roller upper roller, 6-pinch roller lower roller, 7-upper straightening roller pressing cylinder, 8-graphite sliding sleeve, 9-upper straightening roller pressing cylinder joint, 10-pressing block, 11-upper straightening roller, 12-lower straightening roller system, 13-straightening roller transmission assembly, 14-pinch roller transmission assembly, 15-pinch roller pressure plate, 16-upper straightening roller pressure plate, 17-lower straightening roller system pressure plate, 18-calibration plate, 19-servo valve, 20-pressure sensor, 21-displacement sensor, 22-controller;

[0041] 2-1-connecting plate, 2-2-operating side arch, 2-3-base, 2-4-first beam, 2-5-second beam, 2-6-third beam, 2-7-fourth beam, 2-8-transmission side arch, 2-9-pinch roller guide window, 2-10-lower straightening roller system installation window, 2-11-upper straightening roller independent guide window, 2-12-pinch roller pressing cylinder installation hole, 2-13-upper straightening roller pressing cylinder installation hole;

[0042] 11-1-upper straightening roller working roller, 11-2-upper straightening roller bearing seat;

[0043] 12-1-lower straightening roller is the working roller, 12-2-lower straightening roller is the bearing seat;

[0044] 13-1- frequency conversion motor, 13-2- speed reducer, 13-3- gear distribution box, 13-4- universal coupling;

[0045] 14-1-pinch roller drive frequency conversion motor, 14-2-pinch roller reducer, 14-3-pinch roller universal coupling. DETAILED DESCRIPTION

[0046] The specific implementation mode of the present invention is described below in conjunction with embodiments:

[0047] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0048] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0049] Example 1

[0050] like Figure 1 , 2 As shown, the present invention discloses a roller straightening machine, comprising a pinch roller pressing cylinder 1, a frame 2, a pinch roller, an upper straightening roller pressing cylinder 7, an upper straightening roller 11, a lower straightening roller system 12, a straightening roller transmission assembly 13, a pinch roller transmission assembly 14 and a control assembly, wherein the pinch roller pressing cylinder 1, the pinch roller, the upper straightening roller pressing cylinder 7, the upper straightening roller 11, and the lower straightening roller system 12 are all installed on the frame 2, the upper straightening roller 11 is multiple, wherein multiple upper straightening rollers 11 are arranged at the upper end of the lower straightening roller system 12, wherein the upper straightening roller pressing cylinder 7 is multiple, wherein the upper straightening roller pressing cylinder 7 is arranged at the upper end of the corresponding upper straightening roller 11 and connected, The axis of the pinch roller is parallel to the axis of the lower straightening roller system 12, wherein the pinch roller includes an upper pinch roller 5 and a lower pinch roller 6, wherein the upper pinch roller 5 is arranged at the upper end of the lower pinch roller 6, wherein the top height of the lower pinch roller 6 is in the same horizontal plane as the top height of the lower straightening roller system 12, the pinch roller pressing cylinder 1 is arranged at the top of the upper pinch roller 5 and connected, the straightening roller transmission assembly 13 is respectively connected to multiple upper straightening rollers 11 and the lower straightening roller system 12, wherein the pinch roller transmission assembly 14 is respectively connected to the upper pinch roller 5 and the lower pinch roller 6, wherein the pinch roller pressing cylinder 1 and multiple upper straightening roller pressing cylinders 7 are respectively connected to the control assembly.

[0051] Example 2

[0052] like Figure 1 , 2 As shown, the present invention discloses a roller straightening machine, comprising a pinch roller pressing cylinder 1, a frame 2, a pinch roller, an upper straightening roller pressing cylinder 7, an upper straightening roller 11, a lower straightening roller system 12, a straightening roller transmission assembly 13, a pinch roller transmission assembly 14 and a control assembly, wherein the pinch roller pressing cylinder 1, the pinch roller, the upper straightening roller pressing cylinder 7, the upper straightening roller 11, and the lower straightening roller system 12 are all installed on the frame 2, the upper straightening roller 11 is multiple, wherein multiple upper straightening rollers 11 are arranged at the upper end of the lower straightening roller system 12, wherein the upper straightening roller pressing cylinder 7 is multiple, wherein the upper straightening roller pressing cylinder 7 is arranged at the upper end of the corresponding upper straightening roller 11 and connected, The axis of the pinch roller is parallel to the axis of the lower straightening roller system 12, wherein the pinch roller includes an upper pinch roller 5 and a lower pinch roller 6, wherein the upper pinch roller 5 is arranged at the upper end of the lower pinch roller 6, wherein the top height of the lower pinch roller 6 is in the same horizontal plane as the top height of the lower straightening roller system 12, the pinch roller pressing cylinder 1 is arranged at the top of the upper pinch roller 5 and connected, the straightening roller transmission assembly 13 is respectively connected to multiple upper straightening rollers 11 and the lower straightening roller system 12, wherein the pinch roller transmission assembly 14 is respectively connected to the upper pinch roller 5 and the lower pinch roller 6, wherein the pinch roller pressing cylinder 1 and multiple upper straightening roller pressing cylinders 7 are respectively connected to the control assembly.

[0053] Preferably, Figure 5 , 6As shown, the frame 2 includes a connecting plate 2-1, an operating side archway 2-2, a base 2-3, a first crossbeam 2-4, a second crossbeam 2-5, a third crossbeam 2-6, a fourth crossbeam 2-7, a transmission side archway 2-8, a pinch roller guide window 2-9, a lower straightening roller system installation window 2-10, an upper straightening roller independent guide window 2-11, a pinch roller pressing cylinder installation hole 2-12 and an upper straightening roller pressing cylinder installation hole 2-13, wherein the operating side archway 2-2 and the transmission side archway 2-8 are relatively fixed to the base 2-3 by bolts, wherein the base 2 -3 is installed on the equipment foundation, the first crossbeam 2-4, the second crossbeam 2-5, the third crossbeam 2-6 and the fourth crossbeam 2-7 respectively use bolts and positioning pins to connect the sides of the operating side archway 2-2 and the transmission side archway 2-8 from top to bottom, wherein the connecting plate 2-1 uses bolts and positioning pins to connect the top of the operating side archway 2-2 and the transmission side archway 2-8, and the pinch roller guide window 2-9 is set between the operating side archway 2-2 and the transmission side archway 2-8, and is used to install the pinch roller upper roller 5 and the pinch roller lower roller 6, wherein the pinch roller guide window 2 -9 is in the shape of an "8" type structure, wherein the lower straightening roller system installation window 2-10 is arranged between the operating side archway 2-2 and the transmission side archway 2-8, and the lower straightening roller system installation window 2-10 is arranged in parallel with the pinch roller guide window 2-9, wherein the lower straightening roller system installation window 2-10 is used to install the lower straightening roller system 12, and the upper straightening roller independent guide window 2-11 is arranged at the top of the lower straightening roller system installation window 2-10, wherein the upper straightening roller independent guide window 2-11 is used to install the upper straightening roller 11, and the pinch roller pressing cylinder installation hole 2 -12 is arranged at the top of the pinch roller guide window 2-9, wherein the pinch roller pressing cylinder mounting hole 2-12 is used to install the pinch roller pressing cylinder 1, the upper straightening roller pressing cylinder mounting hole 2-13 is arranged at the top of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressing cylinder mounting hole 2-13 is used to install the upper straightening roller pressing cylinder 7, the pinch roller guide window 2-9, the lower straightening roller system mounting window 2-10 and the upper straightening roller independent guide window 2-11 are all provided with pressure plates on the operating side and the transmission side to prevent the pinch roller or the straightening roller from axially moving in series.

[0054] Example 3

[0055] like Figure 1 , 2As shown, the present invention discloses a roller straightening machine, comprising a pinch roller pressing cylinder 1, a frame 2, a pinch roller, an upper straightening roller pressing cylinder 7, an upper straightening roller 11, a lower straightening roller system 12, a straightening roller transmission assembly 13, a pinch roller transmission assembly 14 and a control assembly, wherein the pinch roller pressing cylinder 1, the pinch roller, the upper straightening roller pressing cylinder 7, the upper straightening roller 11, and the lower straightening roller system 12 are all installed on the frame 2, the upper straightening roller 11 is multiple, wherein multiple upper straightening rollers 11 are arranged at the upper end of the lower straightening roller system 12, wherein the upper straightening roller pressing cylinder 7 is multiple, wherein the upper straightening roller pressing cylinder 7 is arranged at the upper end of the corresponding upper straightening roller 11 and connected, The axis of the pinch roller is parallel to the axis of the lower straightening roller system 12, wherein the pinch roller includes an upper pinch roller 5 and a lower pinch roller 6, wherein the upper pinch roller 5 is arranged at the upper end of the lower pinch roller 6, wherein the top height of the lower pinch roller 6 is in the same horizontal plane as the top height of the lower straightening roller system 12, the pinch roller pressing cylinder 1 is arranged at the top of the upper pinch roller 5 and connected, the straightening roller transmission assembly 13 is respectively connected to multiple upper straightening rollers 11 and the lower straightening roller system 12, wherein the pinch roller transmission assembly 14 is respectively connected to the upper pinch roller 5 and the lower pinch roller 6, wherein the pinch roller pressing cylinder 1 and multiple upper straightening roller pressing cylinders 7 are respectively connected to the control assembly.

[0056] Preferably, Figure 5 , 6As shown, the frame 2 includes a connecting plate 2-1, an operating side archway 2-2, a base 2-3, a first crossbeam 2-4, a second crossbeam 2-5, a third crossbeam 2-6, a fourth crossbeam 2-7, a transmission side archway 2-8, a pinch roller guide window 2-9, a lower straightening roller system installation window 2-10, an upper straightening roller independent guide window 2-11, a pinch roller pressing cylinder installation hole 2-12 and an upper straightening roller pressing cylinder installation hole 2-13, wherein the operating side archway 2-2 and the transmission side archway 2-8 are relatively fixed to the base 2-3 by bolts, wherein the base 2 -3 is installed on the equipment foundation, the first crossbeam 2-4, the second crossbeam 2-5, the third crossbeam 2-6 and the fourth crossbeam 2-7 respectively use bolts and positioning pins to connect the sides of the operating side archway 2-2 and the transmission side archway 2-8 from top to bottom, wherein the connecting plate 2-1 uses bolts and positioning pins to connect the top of the operating side archway 2-2 and the transmission side archway 2-8, and the pinch roller guide window 2-9 is set between the operating side archway 2-2 and the transmission side archway 2-8, and is used to install the pinch roller upper roller 5 and the pinch roller lower roller 6, wherein the pinch roller guide window 2 -9 is in the shape of an "8" type structure, wherein the lower straightening roller system installation window 2-10 is arranged between the operating side archway 2-2 and the transmission side archway 2-8, and the lower straightening roller system installation window 2-10 is arranged in parallel with the pinch roller guide window 2-9, wherein the lower straightening roller system installation window 2-10 is used to install the lower straightening roller system 12, and the upper straightening roller independent guide window 2-11 is arranged at the top of the lower straightening roller system installation window 2-10, wherein the upper straightening roller independent guide window 2-11 is used to install the upper straightening roller 11, and the pinch roller pressing cylinder installation hole 2 -12 is arranged at the top of the pinch roller guide window 2-9, wherein the pinch roller pressing cylinder mounting hole 2-12 is used to install the pinch roller pressing cylinder 1, the upper straightening roller pressing cylinder mounting hole 2-13 is arranged at the top of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressing cylinder mounting hole 2-13 is used to install the upper straightening roller pressing cylinder 7, the pinch roller guide window 2-9, the lower straightening roller system mounting window 2-10 and the upper straightening roller independent guide window 2-11 are all provided with pressure plates on the operating side and the transmission side to prevent the pinch roller or the straightening roller from axially moving in series.

[0057] Preferably, Figure 5 , 6 As shown, the steel plate thickness of the operating side arch 2-2 and the transmission side arch 2-8 is 50 to 150 mm, and can be processed from a whole piece of steel plate or integrally cast. The third crossbeam 2-6 is arranged at the upper straightening roller independent guide window 2-11, and is used to improve the rigidity and strength of the upper straightening roller independent guide window 2-11. The fourth crossbeam 2-7 is arranged at the bottom of the lower straightening roller system installation window 2-10, and is used to provide support for the lower straightening roller system installation window 2-10.

[0058] Example 4

[0059] like Figure 1 , 2 As shown, the present invention discloses a roller straightening machine, comprising a pinch roller pressing cylinder 1, a frame 2, a pinch roller, an upper straightening roller pressing cylinder 7, an upper straightening roller 11, a lower straightening roller system 12, a straightening roller transmission assembly 13, a pinch roller transmission assembly 14 and a control assembly, wherein the pinch roller pressing cylinder 1, the pinch roller, the upper straightening roller pressing cylinder 7, the upper straightening roller 11, and the lower straightening roller system 12 are all installed on the frame 2, the upper straightening roller 11 is multiple, wherein multiple upper straightening rollers 11 are arranged at the upper end of the lower straightening roller system 12, wherein the upper straightening roller pressing cylinder 7 is multiple, wherein the upper straightening roller pressing cylinder 7 is arranged at the upper end of the corresponding upper straightening roller 11 and connected, The axis of the pinch roller is parallel to the axis of the lower straightening roller system 12, wherein the pinch roller includes an upper pinch roller 5 and a lower pinch roller 6, wherein the upper pinch roller 5 is arranged at the upper end of the lower pinch roller 6, wherein the top height of the lower pinch roller 6 is in the same horizontal plane as the top height of the lower straightening roller system 12, the pinch roller pressing cylinder 1 is arranged at the top of the upper pinch roller 5 and connected, the straightening roller transmission assembly 13 is respectively connected to multiple upper straightening rollers 11 and the lower straightening roller system 12, wherein the pinch roller transmission assembly 14 is respectively connected to the upper pinch roller 5 and the lower pinch roller 6, wherein the pinch roller pressing cylinder 1 and multiple upper straightening roller pressing cylinders 7 are respectively connected to the control assembly.

[0060] Preferably, Figure 5 , 6As shown, the frame 2 includes a connecting plate 2-1, an operating side archway 2-2, a base 2-3, a first crossbeam 2-4, a second crossbeam 2-5, a third crossbeam 2-6, a fourth crossbeam 2-7, a transmission side archway 2-8, a pinch roller guide window 2-9, a lower straightening roller system installation window 2-10, an upper straightening roller independent guide window 2-11, a pinch roller pressing cylinder installation hole 2-12 and an upper straightening roller pressing cylinder installation hole 2-13, wherein the operating side archway 2-2 and the transmission side archway 2-8 are relatively fixed to the base 2-3 by bolts, wherein the base 2 -3 is installed on the equipment foundation, the first crossbeam 2-4, the second crossbeam 2-5, the third crossbeam 2-6 and the fourth crossbeam 2-7 respectively use bolts and positioning pins to connect the sides of the operating side archway 2-2 and the transmission side archway 2-8 from top to bottom, wherein the connecting plate 2-1 uses bolts and positioning pins to connect the top of the operating side archway 2-2 and the transmission side archway 2-8, and the pinch roller guide window 2-9 is set between the operating side archway 2-2 and the transmission side archway 2-8, and is used to install the pinch roller upper roller 5 and the pinch roller lower roller 6, wherein the pinch roller guide window 2 -9 is in the shape of an "8" type structure, wherein the lower straightening roller system installation window 2-10 is arranged between the operating side archway 2-2 and the transmission side archway 2-8, and the lower straightening roller system installation window 2-10 is arranged in parallel with the pinch roller guide window 2-9, wherein the lower straightening roller system installation window 2-10 is used to install the lower straightening roller system 12, and the upper straightening roller independent guide window 2-11 is arranged at the top of the lower straightening roller system installation window 2-10, wherein the upper straightening roller independent guide window 2-11 is used to install the upper straightening roller 11, and the pinch roller pressing cylinder installation hole 2 -12 is arranged at the top of the pinch roller guide window 2-9, wherein the pinch roller pressing cylinder mounting hole 2-12 is used to install the pinch roller pressing cylinder 1, the upper straightening roller pressing cylinder mounting hole 2-13 is arranged at the top of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressing cylinder mounting hole 2-13 is used to install the upper straightening roller pressing cylinder 7, the pinch roller guide window 2-9, the lower straightening roller system mounting window 2-10 and the upper straightening roller independent guide window 2-11 are all provided with pressure plates on the operating side and the transmission side to prevent the pinch roller or the straightening roller from axially moving in series.

[0061] Preferably, Figure 5 , 6 As shown, the steel plate thickness of the operating side arch 2-2 and the transmission side arch 2-8 is 50 to 150 mm, and can be processed from a whole piece of steel plate or integrally cast. The third crossbeam 2-6 is arranged at the upper straightening roller independent guide window 2-11, and is used to improve the rigidity and strength of the upper straightening roller independent guide window 2-11. The fourth crossbeam 2-7 is arranged at the bottom of the lower straightening roller system installation window 2-10, and is used to provide support for the lower straightening roller system installation window 2-10.

[0062] Preferably, Figure 1 ,5 As shown, the lower end of the pinch roller pressing cylinder 1 is flange-mounted and fixed in the pinch roller pressing cylinder mounting hole 2-12 by bolts, wherein the lower end of the pinch roller pressing cylinder 1 is connected to the pinch roller cylinder joint 3 by threads, and the bottom of the pinch roller cylinder joint 3 is connected to the top of the transition joint 4 by a pin, wherein the bottom of the transition joint 4 is connected to the bearing seats on both sides of the pinch roller upper roller 5 by bolts, wherein the two sides of the bearing seats of the pinch roller upper roller 5 form a sliding pair with a clearance fit with the upper part of the pinch roller guide window 2-9, The lower pinch roller 6 is installed on the lower part of the pinch roller guide window 2-9, wherein both sides of the bearing seat of the lower pinch roller 6 form a sliding pair with a clearance fit with the lower part of the pinch roller guide window 2-9, and the operation side and transmission side of the pinch roller guide window 2-9 are provided with a pinch roller pressure plate 15, wherein the pinch roller pressure plate 15 is fixed to the frame 2 by bolts to constrain the axial movement of the upper pinch roller 5 and the lower pinch roller 6. As the pinch roller pressure cylinder 1 extends and retracts, the upper pinch roller 5 will rise or fall.

[0063] Example 5

[0064] like Figure 1 , 2 As shown, the present invention discloses a roller straightening machine, comprising a pinch roller pressing cylinder 1, a frame 2, a pinch roller, an upper straightening roller pressing cylinder 7, an upper straightening roller 11, a lower straightening roller system 12, a straightening roller transmission assembly 13, a pinch roller transmission assembly 14 and a control assembly, wherein the pinch roller pressing cylinder 1, the pinch roller, the upper straightening roller pressing cylinder 7, the upper straightening roller 11, and the lower straightening roller system 12 are all installed on the frame 2, the upper straightening roller 11 is multiple, wherein multiple upper straightening rollers 11 are arranged at the upper end of the lower straightening roller system 12, wherein the upper straightening roller pressing cylinder 7 is multiple, wherein the upper straightening roller pressing cylinder 7 is arranged at the upper end of the corresponding upper straightening roller 11 and connected, The axis of the pinch roller is parallel to the axis of the lower straightening roller system 12, wherein the pinch roller includes an upper pinch roller 5 and a lower pinch roller 6, wherein the upper pinch roller 5 is arranged at the upper end of the lower pinch roller 6, wherein the top height of the lower pinch roller 6 is in the same horizontal plane as the top height of the lower straightening roller system 12, the pinch roller pressing cylinder 1 is arranged at the top of the upper pinch roller 5 and connected, the straightening roller transmission assembly 13 is respectively connected to multiple upper straightening rollers 11 and the lower straightening roller system 12, wherein the pinch roller transmission assembly 14 is respectively connected to the upper pinch roller 5 and the lower pinch roller 6, wherein the pinch roller pressing cylinder 1 and multiple upper straightening roller pressing cylinders 7 are respectively connected to the control assembly.

[0065] Preferably, Figure 5 , 6As shown, the frame 2 includes a connecting plate 2-1, an operating side archway 2-2, a base 2-3, a first crossbeam 2-4, a second crossbeam 2-5, a third crossbeam 2-6, a fourth crossbeam 2-7, a transmission side archway 2-8, a pinch roller guide window 2-9, a lower straightening roller system installation window 2-10, an upper straightening roller independent guide window 2-11, a pinch roller pressing cylinder installation hole 2-12 and an upper straightening roller pressing cylinder installation hole 2-13, wherein the operating side archway 2-2 and the transmission side archway 2-8 are relatively fixed to the base 2-3 by bolts, wherein the base 2 -3 is installed on the equipment foundation, the first crossbeam 2-4, the second crossbeam 2-5, the third crossbeam 2-6 and the fourth crossbeam 2-7 respectively use bolts and positioning pins to connect the sides of the operating side archway 2-2 and the transmission side archway 2-8 from top to bottom, wherein the connecting plate 2-1 uses bolts and positioning pins to connect the top of the operating side archway 2-2 and the transmission side archway 2-8, and the pinch roller guide window 2-9 is set between the operating side archway 2-2 and the transmission side archway 2-8, and is used to install the pinch roller upper roller 5 and the pinch roller lower roller 6, wherein the pinch roller guide window 2 -9 is in the shape of an "8" type structure, wherein the lower straightening roller system installation window 2-10 is arranged between the operating side archway 2-2 and the transmission side archway 2-8, and the lower straightening roller system installation window 2-10 is arranged in parallel with the pinch roller guide window 2-9, wherein the lower straightening roller system installation window 2-10 is used to install the lower straightening roller system 12, and the upper straightening roller independent guide window 2-11 is arranged at the top of the lower straightening roller system installation window 2-10, wherein the upper straightening roller independent guide window 2-11 is used to install the upper straightening roller 11, and the pinch roller pressing cylinder installation hole 2 -12 is arranged at the top of the pinch roller guide window 2-9, wherein the pinch roller pressing cylinder mounting hole 2-12 is used to install the pinch roller pressing cylinder 1, the upper straightening roller pressing cylinder mounting hole 2-13 is arranged at the top of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressing cylinder mounting hole 2-13 is used to install the upper straightening roller pressing cylinder 7, the pinch roller guide window 2-9, the lower straightening roller system mounting window 2-10 and the upper straightening roller independent guide window 2-11 are all provided with pressure plates on the operating side and the transmission side to prevent the pinch roller or the straightening roller from axially moving in series.

[0066] Preferably, Figure 5 , 6 As shown, the steel plate thickness of the operating side arch 2-2 and the transmission side arch 2-8 is 50 to 150 mm, and can be processed from a whole piece of steel plate or integrally cast. The third crossbeam 2-6 is arranged at the upper straightening roller independent guide window 2-11, and is used to improve the rigidity and strength of the upper straightening roller independent guide window 2-11. The fourth crossbeam 2-7 is arranged at the bottom of the lower straightening roller system installation window 2-10, and is used to provide support for the lower straightening roller system installation window 2-10.

[0067] Preferably, Figure 1 ,5 As shown, the lower end of the pinch roller pressing cylinder 1 is flange-mounted and fixed in the pinch roller pressing cylinder mounting hole 2-12 by bolts, wherein the lower end of the pinch roller pressing cylinder 1 is connected to the pinch roller cylinder joint 3 by threads, and the bottom of the pinch roller cylinder joint 3 is connected to the top of the transition joint 4 by a pin, wherein the bottom of the transition joint 4 is connected to the bearing seats on both sides of the pinch roller upper roller 5 by bolts, wherein the two sides of the bearing seats of the pinch roller upper roller 5 form a sliding pair with a clearance fit with the upper part of the pinch roller guide window 2-9, The lower pinch roller 6 is installed on the lower part of the pinch roller guide window 2-9, wherein both sides of the bearing seat of the lower pinch roller 6 form a sliding pair with a clearance fit with the lower part of the pinch roller guide window 2-9, and the operation side and transmission side of the pinch roller guide window 2-9 are provided with a pinch roller pressure plate 15, wherein the pinch roller pressure plate 15 is fixed to the frame 2 by bolts to constrain the axial movement of the upper pinch roller 5 and the lower pinch roller 6. As the pinch roller pressure cylinder 1 extends and retracts, the upper pinch roller 5 will rise or fall.

[0068] Preferably, Figure 1 , 5 As shown in , 7, the lower end of the upper straightening roller pressing cylinder 7 is flange-mounted and fixed in the upper straightening roller pressing cylinder mounting hole 2-13 by bolts, wherein the lower end of the upper straightening roller pressing cylinder 7 is connected to the upper straightening roller pressing cylinder joint 9 passing through the graphite sleeve 8, wherein the graphite sleeve 8 is fixed in the frame 2 by bolts, one end of the upper straightening roller pressing cylinder joint 9 passes through the inner hole of the graphite sleeve 8 and forms a sliding pair with a clearance fit therewith and is connected to the lower end of the upper straightening roller pressing cylinder 7 by threads inside the frame 2, wherein the other end of the upper straightening roller pressing cylinder joint 9 is connected to the bearing seat of the upper straightening roller 11 through a pressure block 10, wherein the pressure block 10 is fixed on the bearing seat of the upper straightening roller 11 by bolts, the graphite sleeve 8, the upper straightening roller pressing cylinder joint 9, the pressure block 10 and the upper straightening roller 1 1 is arranged inside the upper straightening roller independent guide window 2-11, the upper straightening roller 11 is composed of an upper straightening roller working roller 11-1 and two upper straightening roller bearing seats 11-2, wherein the two upper straightening roller bearing seats 11-2 are respectively arranged on the operation side and the transmission side of the upper straightening roller working roller 11-1, wherein the two sides of the upper straightening roller bearing seat 11-2 form a clearance fit sliding pair with the upper straightening roller independent guide window 2-11, and upper straightening roller pressure plates 16 are arranged on both sides of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressure plates 16 are fixed to the frame 2 by bolts to constrain the axial stringing of the upper straightening roller 11, and the upper straightening roller pressing cylinder 7 can drive the upper straightening roller 11 to rise or fall independently in the upper straightening roller independent guide window 2-11, thereby adjusting the overlap required for straightening.

[0069] Example 6

[0070] like Figure 1 ,2 As shown, the present invention discloses a roller straightening machine, comprising a pinch roller pressing cylinder 1, a frame 2, a pinch roller, an upper straightening roller pressing cylinder 7, an upper straightening roller 11, a lower straightening roller system 12, a straightening roller transmission assembly 13, a pinch roller transmission assembly 14 and a control assembly, wherein the pinch roller pressing cylinder 1, the pinch roller, the upper straightening roller pressing cylinder 7, the upper straightening roller 11, and the lower straightening roller system 12 are all installed on the frame 2, the upper straightening roller 11 is multiple, wherein multiple upper straightening rollers 11 are arranged at the upper end of the lower straightening roller system 12, wherein the upper straightening roller pressing cylinder 7 is multiple, wherein the upper straightening roller pressing cylinder 7 is arranged at the upper end of the corresponding upper straightening roller 11 and connected, The axis of the pinch roller is parallel to the axis of the lower straightening roller system 12, wherein the pinch roller includes an upper pinch roller 5 and a lower pinch roller 6, wherein the upper pinch roller 5 is arranged at the upper end of the lower pinch roller 6, wherein the top height of the lower pinch roller 6 is in the same horizontal plane as the top height of the lower straightening roller system 12, the pinch roller pressing cylinder 1 is arranged at the top of the upper pinch roller 5 and connected, the straightening roller transmission assembly 13 is respectively connected to multiple upper straightening rollers 11 and the lower straightening roller system 12, wherein the pinch roller transmission assembly 14 is respectively connected to the upper pinch roller 5 and the lower pinch roller 6, wherein the pinch roller pressing cylinder 1 and multiple upper straightening roller pressing cylinders 7 are respectively connected to the control assembly.

[0071] Preferably, Figure 5 , 6As shown, the frame 2 includes a connecting plate 2-1, an operating side archway 2-2, a base 2-3, a first crossbeam 2-4, a second crossbeam 2-5, a third crossbeam 2-6, a fourth crossbeam 2-7, a transmission side archway 2-8, a pinch roller guide window 2-9, a lower straightening roller system installation window 2-10, an upper straightening roller independent guide window 2-11, a pinch roller pressing cylinder installation hole 2-12 and an upper straightening roller pressing cylinder installation hole 2-13, wherein the operating side archway 2-2 and the transmission side archway 2-8 are relatively fixed to the base 2-3 by bolts, wherein the base 2 -3 is installed on the equipment foundation, the first crossbeam 2-4, the second crossbeam 2-5, the third crossbeam 2-6 and the fourth crossbeam 2-7 respectively use bolts and positioning pins to connect the sides of the operating side archway 2-2 and the transmission side archway 2-8 from top to bottom, wherein the connecting plate 2-1 uses bolts and positioning pins to connect the top of the operating side archway 2-2 and the transmission side archway 2-8, and the pinch roller guide window 2-9 is set between the operating side archway 2-2 and the transmission side archway 2-8, and is used to install the pinch roller upper roller 5 and the pinch roller lower roller 6, wherein the pinch roller guide window 2 -9 is in the shape of an "8" type structure, wherein the lower straightening roller system installation window 2-10 is arranged between the operating side archway 2-2 and the transmission side archway 2-8, and the lower straightening roller system installation window 2-10 is arranged in parallel with the pinch roller guide window 2-9, wherein the lower straightening roller system installation window 2-10 is used to install the lower straightening roller system 12, and the upper straightening roller independent guide window 2-11 is arranged at the top of the lower straightening roller system installation window 2-10, wherein the upper straightening roller independent guide window 2-11 is used to install the upper straightening roller 11, and the pinch roller pressing cylinder installation hole 2 -12 is arranged at the top of the pinch roller guide window 2-9, wherein the pinch roller pressing cylinder mounting hole 2-12 is used to install the pinch roller pressing cylinder 1, the upper straightening roller pressing cylinder mounting hole 2-13 is arranged at the top of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressing cylinder mounting hole 2-13 is used to install the upper straightening roller pressing cylinder 7, the pinch roller guide window 2-9, the lower straightening roller system mounting window 2-10 and the upper straightening roller independent guide window 2-11 are all provided with pressure plates on the operating side and the transmission side to prevent the pinch roller or the straightening roller from axially moving in series.

[0072] Preferably, Figure 5 , 6 As shown, the steel plate thickness of the operating side arch 2-2 and the transmission side arch 2-8 is 50 to 150 mm, and can be processed from a whole piece of steel plate or integrally cast. The third crossbeam 2-6 is arranged at the upper straightening roller independent guide window 2-11, and is used to improve the rigidity and strength of the upper straightening roller independent guide window 2-11. The fourth crossbeam 2-7 is arranged at the bottom of the lower straightening roller system installation window 2-10, and is used to provide support for the lower straightening roller system installation window 2-10.

[0073] Preferably, Figure 1 ,5 As shown, the lower end of the pinch roller pressing cylinder 1 is flange-mounted and fixed in the pinch roller pressing cylinder mounting hole 2-12 by bolts, wherein the lower end of the pinch roller pressing cylinder 1 is connected to the pinch roller cylinder joint 3 by threads, and the bottom of the pinch roller cylinder joint 3 is connected to the top of the transition joint 4 by a pin, wherein the bottom of the transition joint 4 is connected to the bearing seats on both sides of the pinch roller upper roller 5 by bolts, wherein the two sides of the bearing seats of the pinch roller upper roller 5 form a sliding pair with a clearance fit with the upper part of the pinch roller guide window 2-9, The lower pinch roller 6 is installed on the lower part of the pinch roller guide window 2-9, wherein both sides of the bearing seat of the lower pinch roller 6 form a sliding pair with a clearance fit with the lower part of the pinch roller guide window 2-9, and the operation side and transmission side of the pinch roller guide window 2-9 are provided with a pinch roller pressure plate 15, wherein the pinch roller pressure plate 15 is fixed to the frame 2 by bolts to constrain the axial movement of the upper pinch roller 5 and the lower pinch roller 6. As the pinch roller pressure cylinder 1 extends and retracts, the upper pinch roller 5 will rise or fall.

[0074] Preferably, Figure 1 , 5 As shown in , 7, the lower end of the upper straightening roller pressing cylinder 7 is flange-mounted and fixed in the upper straightening roller pressing cylinder mounting hole 2-13 by bolts, wherein the lower end of the upper straightening roller pressing cylinder 7 is connected to the upper straightening roller pressing cylinder joint 9 passing through the graphite sleeve 8, wherein the graphite sleeve 8 is fixed in the frame 2 by bolts, one end of the upper straightening roller pressing cylinder joint 9 passes through the inner hole of the graphite sleeve 8 and forms a sliding pair with a clearance fit therewith and is connected to the lower end of the upper straightening roller pressing cylinder 7 by threads inside the frame 2, wherein the other end of the upper straightening roller pressing cylinder joint 9 is connected to the bearing seat of the upper straightening roller 11 through a pressure block 10, wherein the pressure block 10 is fixed on the bearing seat of the upper straightening roller 11 by bolts, the graphite sleeve 8, the upper straightening roller pressing cylinder joint 9, the pressure block 10 and the upper straightening roller 1 1 is arranged inside the upper straightening roller independent guide window 2-11, the upper straightening roller 11 is composed of an upper straightening roller working roller 11-1 and two upper straightening roller bearing seats 11-2, wherein the two upper straightening roller bearing seats 11-2 are respectively arranged on the operation side and the transmission side of the upper straightening roller working roller 11-1, wherein the two sides of the upper straightening roller bearing seat 11-2 form a clearance fit sliding pair with the upper straightening roller independent guide window 2-11, and upper straightening roller pressure plates 16 are arranged on both sides of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressure plates 16 are fixed to the frame 2 by bolts to constrain the axial stringing of the upper straightening roller 11, and the upper straightening roller pressing cylinder 7 can drive the upper straightening roller 11 to rise or fall independently in the upper straightening roller independent guide window 2-11, thereby adjusting the overlap required for straightening.

[0075] Preferably, Figure 1 , 5As shown in , 8, the lower straightening roller system 12 is installed as a whole in the lower straightening roller system installation window 2-10, wherein the lower straightening roller system 12 includes a lower straightening roller system working roller 12-1 and two groups of lower straightening roller system bearing seats 12-2, wherein the two groups of lower straightening roller system bearing seats 12-2 are respectively arranged on the operation side and the transmission side of the lower straightening roller system working roller 12-1, wherein the two sides of the lower straightening roller system bearing seats 12-2 form a sliding pair with a clearance fit with the lower straightening roller system installation window 2-10, and lower straightening roller system pressure plates 17 are provided on both sides of the lower straightening roller system installation window 2-10, wherein the lower straightening roller system pressure plates 17 are fixed to the frame 2 by bolts to constrain the axial stringing of the lower straightening roller system 12, and the lower straightening roller system 12 does not rise or fall as a whole, wherein the lower straightening roller system bearing seats 12-2 are an integral structure.

[0076] Example 7

[0077] like Figure 1 , 2 As shown, the present invention discloses a roller straightening machine, comprising a pinch roller pressing cylinder 1, a frame 2, a pinch roller, an upper straightening roller pressing cylinder 7, an upper straightening roller 11, a lower straightening roller system 12, a straightening roller transmission assembly 13, a pinch roller transmission assembly 14 and a control assembly, wherein the pinch roller pressing cylinder 1, the pinch roller, the upper straightening roller pressing cylinder 7, the upper straightening roller 11, and the lower straightening roller system 12 are all installed on the frame 2, the upper straightening roller 11 is multiple, wherein multiple upper straightening rollers 11 are arranged at the upper end of the lower straightening roller system 12, wherein the upper straightening roller pressing cylinder 7 is multiple, wherein the upper straightening roller pressing cylinder 7 is arranged at the upper end of the corresponding upper straightening roller 11 and connected, The axis of the pinch roller is parallel to the axis of the lower straightening roller system 12, wherein the pinch roller includes an upper pinch roller 5 and a lower pinch roller 6, wherein the upper pinch roller 5 is arranged at the upper end of the lower pinch roller 6, wherein the top height of the lower pinch roller 6 is in the same horizontal plane as the top height of the lower straightening roller system 12, the pinch roller pressing cylinder 1 is arranged at the top of the upper pinch roller 5 and connected, the straightening roller transmission assembly 13 is respectively connected to multiple upper straightening rollers 11 and the lower straightening roller system 12, wherein the pinch roller transmission assembly 14 is respectively connected to the upper pinch roller 5 and the lower pinch roller 6, wherein the pinch roller pressing cylinder 1 and multiple upper straightening roller pressing cylinders 7 are respectively connected to the control assembly.

[0078] Preferably, Figure 5 , 6As shown, the frame 2 includes a connecting plate 2-1, an operating side archway 2-2, a base 2-3, a first crossbeam 2-4, a second crossbeam 2-5, a third crossbeam 2-6, a fourth crossbeam 2-7, a transmission side archway 2-8, a pinch roller guide window 2-9, a lower straightening roller system installation window 2-10, an upper straightening roller independent guide window 2-11, a pinch roller pressing cylinder installation hole 2-12 and an upper straightening roller pressing cylinder installation hole 2-13, wherein the operating side archway 2-2 and the transmission side archway 2-8 are relatively fixed to the base 2-3 by bolts, wherein the base 2 -3 is installed on the equipment foundation, the first crossbeam 2-4, the second crossbeam 2-5, the third crossbeam 2-6 and the fourth crossbeam 2-7 respectively use bolts and positioning pins to connect the sides of the operating side archway 2-2 and the transmission side archway 2-8 from top to bottom, wherein the connecting plate 2-1 uses bolts and positioning pins to connect the top of the operating side archway 2-2 and the transmission side archway 2-8, and the pinch roller guide window 2-9 is set between the operating side archway 2-2 and the transmission side archway 2-8, and is used to install the pinch roller upper roller 5 and the pinch roller lower roller 6, wherein the pinch roller guide window 2 -9 is in the shape of an "8" type structure, wherein the lower straightening roller system installation window 2-10 is arranged between the operating side archway 2-2 and the transmission side archway 2-8, and the lower straightening roller system installation window 2-10 is arranged in parallel with the pinch roller guide window 2-9, wherein the lower straightening roller system installation window 2-10 is used to install the lower straightening roller system 12, and the upper straightening roller independent guide window 2-11 is arranged at the top of the lower straightening roller system installation window 2-10, wherein the upper straightening roller independent guide window 2-11 is used to install the upper straightening roller 11, and the pinch roller pressing cylinder installation hole 2 -12 is arranged at the top of the pinch roller guide window 2-9, wherein the pinch roller pressing cylinder mounting hole 2-12 is used to install the pinch roller pressing cylinder 1, the upper straightening roller pressing cylinder mounting hole 2-13 is arranged at the top of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressing cylinder mounting hole 2-13 is used to install the upper straightening roller pressing cylinder 7, the pinch roller guide window 2-9, the lower straightening roller system mounting window 2-10 and the upper straightening roller independent guide window 2-11 are all provided with pressure plates on the operating side and the transmission side to prevent the pinch roller or the straightening roller from axially moving in series.

[0079] Preferably, Figure 5 , 6 As shown, the steel plate thickness of the operating side arch 2-2 and the transmission side arch 2-8 is 50 to 150 mm, and can be processed from a whole piece of steel plate or integrally cast. The third crossbeam 2-6 is arranged at the upper straightening roller independent guide window 2-11, and is used to improve the rigidity and strength of the upper straightening roller independent guide window 2-11. The fourth crossbeam 2-7 is arranged at the bottom of the lower straightening roller system installation window 2-10, and is used to provide support for the lower straightening roller system installation window 2-10.

[0080] Preferably, Figure 1 ,5 As shown, the lower end of the pinch roller pressing cylinder 1 is flange-mounted and fixed in the pinch roller pressing cylinder mounting hole 2-12 by bolts, wherein the lower end of the pinch roller pressing cylinder 1 is connected to the pinch roller cylinder joint 3 by threads, and the bottom of the pinch roller cylinder joint 3 is connected to the top of the transition joint 4 by a pin, wherein the bottom of the transition joint 4 is connected to the bearing seats on both sides of the pinch roller upper roller 5 by bolts, wherein the two sides of the bearing seats of the pinch roller upper roller 5 form a sliding pair with a clearance fit with the upper part of the pinch roller guide window 2-9, The lower pinch roller 6 is installed on the lower part of the pinch roller guide window 2-9, wherein both sides of the bearing seat of the lower pinch roller 6 form a sliding pair with a clearance fit with the lower part of the pinch roller guide window 2-9, and the operation side and transmission side of the pinch roller guide window 2-9 are provided with a pinch roller pressure plate 15, wherein the pinch roller pressure plate 15 is fixed to the frame 2 by bolts to constrain the axial movement of the upper pinch roller 5 and the lower pinch roller 6. As the pinch roller pressure cylinder 1 extends and retracts, the upper pinch roller 5 will rise or fall.

[0081] Preferably, Figure 1 , 5 As shown in , 7, the lower end of the upper straightening roller pressing cylinder 7 is flange-mounted and fixed in the upper straightening roller pressing cylinder mounting hole 2-13 by bolts, wherein the lower end of the upper straightening roller pressing cylinder 7 is connected to the upper straightening roller pressing cylinder joint 9 passing through the graphite sleeve 8, wherein the graphite sleeve 8 is fixed in the frame 2 by bolts, one end of the upper straightening roller pressing cylinder joint 9 passes through the inner hole of the graphite sleeve 8 and forms a sliding pair with a clearance fit therewith and is connected to the lower end of the upper straightening roller pressing cylinder 7 by threads inside the frame 2, wherein the other end of the upper straightening roller pressing cylinder joint 9 is connected to the bearing seat of the upper straightening roller 11 through a pressure block 10, wherein the pressure block 10 is fixed on the bearing seat of the upper straightening roller 11 by bolts, the graphite sleeve 8, the upper straightening roller pressing cylinder joint 9, the pressure block 10 and the upper straightening roller 1 1 is arranged inside the upper straightening roller independent guide window 2-11, the upper straightening roller 11 is composed of an upper straightening roller working roller 11-1 and two upper straightening roller bearing seats 11-2, wherein the two upper straightening roller bearing seats 11-2 are respectively arranged on the operation side and the transmission side of the upper straightening roller working roller 11-1, wherein the two sides of the upper straightening roller bearing seat 11-2 form a clearance fit sliding pair with the upper straightening roller independent guide window 2-11, and upper straightening roller pressure plates 16 are arranged on both sides of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressure plates 16 are fixed to the frame 2 by bolts to constrain the axial stringing of the upper straightening roller 11, and the upper straightening roller pressing cylinder 7 can drive the upper straightening roller 11 to rise or fall independently in the upper straightening roller independent guide window 2-11, thereby adjusting the overlap required for straightening.

[0082] Preferably, Figure 1 , 5As shown in , 8, the lower straightening roller system 12 is installed as a whole in the lower straightening roller system installation window 2-10, wherein the lower straightening roller system 12 includes a lower straightening roller system working roller 12-1 and two groups of lower straightening roller system bearing seats 12-2, wherein the two groups of lower straightening roller system bearing seats 12-2 are respectively arranged on the operation side and the transmission side of the lower straightening roller system working roller 12-1, wherein the two sides of the lower straightening roller system bearing seats 12-2 form a sliding pair with a clearance fit with the lower straightening roller system installation window 2-10, and lower straightening roller system pressure plates 17 are provided on both sides of the lower straightening roller system installation window 2-10, wherein the lower straightening roller system pressure plates 17 are fixed to the frame 2 by bolts to constrain the axial stringing of the lower straightening roller system 12, and the lower straightening roller system 12 does not rise or fall as a whole, wherein the lower straightening roller system bearing seats 12-2 are an integral structure.

[0083] Preferably, Figure 2 , 4 As shown, the straightening roller transmission assembly 13 includes a variable frequency motor 13-1, a reducer 13-2, a gear distribution box 13-3 and a universal coupling 13-4, wherein the variable frequency motor 13-1 is connected to the reducer 13-2 through a coupling, wherein the reducer 13-2 is connected to the gear distribution box 13-3 through a coupling, wherein the gear distribution box 13-3 is connected to multiple upper straightening rollers 11 and the lower straightening roller system 12 through the universal coupling 13-4 respectively; the pinch roller transmission assembly 14 includes a pinch roller transmission variable frequency motor 14-1, a pinch roller reducer 14-2 and a pinch roller universal coupling 14-3, wherein the pinch roller transmission variable frequency motor 14-1 is connected to the pinch roller reducer 14-2 through a coupling, wherein the pinch roller reducer 14-2 is connected to the pinch roller upper roller 5 and the pinch roller lower roller 6 through the pinch roller universal coupling 14-3 respectively.

[0084] Preferably, Figure 3 As shown, the control component includes a servo valve 19, a pressure sensor 20, a displacement sensor 21 and a controller 22, wherein an upper straightening roller pressing cylinder 7 is provided above the transmission side and the operating side of each upper straightening roller 11, wherein the upper straightening roller pressing cylinder 7 is connected to the servo valve 19 through a pipeline, wherein the servo valve 19 and the controller 22 are connected through a cable, and a pressure sensor 20 is provided on the oil inlet pipeline of the rodless cavity of the upper straightening roller pressing cylinder 7 for measuring the pressure of the rodless cavity, wherein a displacement sensor 21 is provided in the upper straightening roller pressing cylinder 7 for accurately measuring the extension amount of the cylinder, and the controller 22 is a single-chip microcomputer.

[0085] Example 8

[0086] like Figure 1 , 2As shown, the present invention discloses a roller straightening machine, comprising a pinch roller pressing cylinder 1, a frame 2, a pinch roller, an upper straightening roller pressing cylinder 7, an upper straightening roller 11, a lower straightening roller system 12, a straightening roller transmission assembly 13, a pinch roller transmission assembly 14 and a control assembly, wherein the pinch roller pressing cylinder 1, the pinch roller, the upper straightening roller pressing cylinder 7, the upper straightening roller 11, and the lower straightening roller system 12 are all installed on the frame 2, the upper straightening roller 11 is multiple, wherein multiple upper straightening rollers 11 are arranged at the upper end of the lower straightening roller system 12, wherein the upper straightening roller pressing cylinder 7 is multiple, wherein the upper straightening roller pressing cylinder 7 is arranged at the upper end of the corresponding upper straightening roller 11 and connected, The axis of the pinch roller is parallel to the axis of the lower straightening roller system 12, wherein the pinch roller includes an upper pinch roller 5 and a lower pinch roller 6, wherein the upper pinch roller 5 is arranged at the upper end of the lower pinch roller 6, wherein the top height of the lower pinch roller 6 is in the same horizontal plane as the top height of the lower straightening roller system 12, the pinch roller pressing cylinder 1 is arranged at the top of the upper pinch roller 5 and connected, the straightening roller transmission assembly 13 is respectively connected to multiple upper straightening rollers 11 and the lower straightening roller system 12, wherein the pinch roller transmission assembly 14 is respectively connected to the upper pinch roller 5 and the lower pinch roller 6, wherein the pinch roller pressing cylinder 1 and multiple upper straightening roller pressing cylinders 7 are respectively connected to the control assembly.

[0087] Preferably, Figure 5 , 6As shown, the frame 2 includes a connecting plate 2-1, an operating side archway 2-2, a base 2-3, a first crossbeam 2-4, a second crossbeam 2-5, a third crossbeam 2-6, a fourth crossbeam 2-7, a transmission side archway 2-8, a pinch roller guide window 2-9, a lower straightening roller system installation window 2-10, an upper straightening roller independent guide window 2-11, a pinch roller pressing cylinder installation hole 2-12 and an upper straightening roller pressing cylinder installation hole 2-13, wherein the operating side archway 2-2 and the transmission side archway 2-8 are relatively fixed to the base 2-3 by bolts, wherein the base 2 -3 is installed on the equipment foundation, the first crossbeam 2-4, the second crossbeam 2-5, the third crossbeam 2-6 and the fourth crossbeam 2-7 respectively use bolts and positioning pins to connect the sides of the operating side archway 2-2 and the transmission side archway 2-8 from top to bottom, wherein the connecting plate 2-1 uses bolts and positioning pins to connect the top of the operating side archway 2-2 and the transmission side archway 2-8, and the pinch roller guide window 2-9 is set between the operating side archway 2-2 and the transmission side archway 2-8, and is used to install the pinch roller upper roller 5 and the pinch roller lower roller 6, wherein the pinch roller guide window 2 -9 is in the shape of an "8" type structure, wherein the lower straightening roller system installation window 2-10 is arranged between the operating side archway 2-2 and the transmission side archway 2-8, and the lower straightening roller system installation window 2-10 is arranged in parallel with the pinch roller guide window 2-9, wherein the lower straightening roller system installation window 2-10 is used to install the lower straightening roller system 12, and the upper straightening roller independent guide window 2-11 is arranged at the top of the lower straightening roller system installation window 2-10, wherein the upper straightening roller independent guide window 2-11 is used to install the upper straightening roller 11, and the pinch roller pressing cylinder installation hole 2 -12 is arranged at the top of the pinch roller guide window 2-9, wherein the pinch roller pressing cylinder mounting hole 2-12 is used to install the pinch roller pressing cylinder 1, the upper straightening roller pressing cylinder mounting hole 2-13 is arranged at the top of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressing cylinder mounting hole 2-13 is used to install the upper straightening roller pressing cylinder 7, the pinch roller guide window 2-9, the lower straightening roller system mounting window 2-10 and the upper straightening roller independent guide window 2-11 are all provided with pressure plates on the operating side and the transmission side to prevent the pinch roller or the straightening roller from axially moving in series.

[0088] Preferably, Figure 5 , 6 As shown, the steel plate thickness of the operating side arch 2-2 and the transmission side arch 2-8 is 50 to 150 mm, and can be processed from a whole piece of steel plate or integrally cast. The third crossbeam 2-6 is arranged at the upper straightening roller independent guide window 2-11, and is used to improve the rigidity and strength of the upper straightening roller independent guide window 2-11. The fourth crossbeam 2-7 is arranged at the bottom of the lower straightening roller system installation window 2-10, and is used to provide support for the lower straightening roller system installation window 2-10.

[0089] Preferably, Figure 1 ,5 As shown, the lower end of the pinch roller pressing cylinder 1 is flange-mounted and fixed in the pinch roller pressing cylinder mounting hole 2-12 by bolts, wherein the lower end of the pinch roller pressing cylinder 1 is connected to the pinch roller cylinder joint 3 by threads, and the bottom of the pinch roller cylinder joint 3 is connected to the top of the transition joint 4 by a pin, wherein the bottom of the transition joint 4 is connected to the bearing seats on both sides of the pinch roller upper roller 5 by bolts, wherein the two sides of the bearing seats of the pinch roller upper roller 5 form a sliding pair with a clearance fit with the upper part of the pinch roller guide window 2-9, The lower pinch roller 6 is installed on the lower part of the pinch roller guide window 2-9, wherein both sides of the bearing seat of the lower pinch roller 6 form a sliding pair with a clearance fit with the lower part of the pinch roller guide window 2-9, and the operation side and transmission side of the pinch roller guide window 2-9 are provided with a pinch roller pressure plate 15, wherein the pinch roller pressure plate 15 is fixed to the frame 2 by bolts to constrain the axial movement of the upper pinch roller 5 and the lower pinch roller 6. As the pinch roller pressure cylinder 1 extends and retracts, the upper pinch roller 5 will rise or fall.

[0090] Preferably, Figure 1 , 5 As shown in , 7, the lower end of the upper straightening roller pressing cylinder 7 is flange-mounted and fixed in the upper straightening roller pressing cylinder mounting hole 2-13 by bolts, wherein the lower end of the upper straightening roller pressing cylinder 7 is connected to the upper straightening roller pressing cylinder joint 9 passing through the graphite sleeve 8, wherein the graphite sleeve 8 is fixed in the frame 2 by bolts, one end of the upper straightening roller pressing cylinder joint 9 passes through the inner hole of the graphite sleeve 8 and forms a sliding pair with a clearance fit therewith and is connected to the lower end of the upper straightening roller pressing cylinder 7 by threads inside the frame 2, wherein the other end of the upper straightening roller pressing cylinder joint 9 is connected to the bearing seat of the upper straightening roller 11 through a pressure block 10, wherein the pressure block 10 is fixed on the bearing seat of the upper straightening roller 11 by bolts, the graphite sleeve 8, the upper straightening roller pressing cylinder joint 9, the pressure block 10 and the upper straightening roller 1 1 is arranged inside the upper straightening roller independent guide window 2-11, the upper straightening roller 11 is composed of an upper straightening roller working roller 11-1 and two upper straightening roller bearing seats 11-2, wherein the two upper straightening roller bearing seats 11-2 are respectively arranged on the operation side and the transmission side of the upper straightening roller working roller 11-1, wherein the two sides of the upper straightening roller bearing seat 11-2 form a clearance fit sliding pair with the upper straightening roller independent guide window 2-11, and upper straightening roller pressure plates 16 are arranged on both sides of the upper straightening roller independent guide window 2-11, wherein the upper straightening roller pressure plates 16 are fixed to the frame 2 by bolts to constrain the axial stringing of the upper straightening roller 11, and the upper straightening roller pressing cylinder 7 can drive the upper straightening roller 11 to rise or fall independently in the upper straightening roller independent guide window 2-11, thereby adjusting the overlap required for straightening.

[0091] Preferably, Figure 1 , 5As shown in , 8, the lower straightening roller system 12 is installed as a whole in the lower straightening roller system installation window 2-10, wherein the lower straightening roller system 12 includes a lower straightening roller system working roller 12-1 and two groups of lower straightening roller system bearing seats 12-2, wherein the two groups of lower straightening roller system bearing seats 12-2 are respectively arranged on the operation side and the transmission side of the lower straightening roller system working roller 12-1, wherein the two sides of the lower straightening roller system bearing seats 12-2 form a sliding pair with a clearance fit with the lower straightening roller system installation window 2-10, and lower straightening roller system pressure plates 17 are provided on both sides of the lower straightening roller system installation window 2-10, wherein the lower straightening roller system pressure plates 17 are fixed to the frame 2 by bolts to constrain the axial stringing of the lower straightening roller system 12, and the lower straightening roller system 12 does not rise or fall as a whole, wherein the lower straightening roller system bearing seats 12-2 are an integral structure.

[0092] Preferably, Figure 2 , 4 As shown, the straightening roller transmission assembly 13 includes a variable frequency motor 13-1, a reducer 13-2, a gear distribution box 13-3 and a universal coupling 13-4, wherein the variable frequency motor 13-1 is connected to the reducer 13-2 through a coupling, wherein the reducer 13-2 is connected to the gear distribution box 13-3 through a coupling, wherein the gear distribution box 13-3 is connected to multiple upper straightening rollers 11 and the lower straightening roller system 12 through the universal coupling 13-4 respectively; the pinch roller transmission assembly 14 includes a pinch roller transmission variable frequency motor 14-1, a pinch roller reducer 14-2 and a pinch roller universal coupling 14-3, wherein the pinch roller transmission variable frequency motor 14-1 is connected to the pinch roller reducer 14-2 through a coupling, wherein the pinch roller reducer 14-2 is connected to the pinch roller upper roller 5 and the pinch roller lower roller 6 through the pinch roller universal coupling 14-3 respectively.

[0093] Preferably, Figure 3 As shown, the control component includes a servo valve 19, a pressure sensor 20, a displacement sensor 21 and a controller 22, wherein an upper straightening roller pressing cylinder 7 is provided above the transmission side and the operating side of each upper straightening roller 11, wherein the upper straightening roller pressing cylinder 7 is connected to the servo valve 19 through a pipeline, wherein the servo valve 19 and the controller 22 are connected through a cable, and a pressure sensor 20 is provided on the oil inlet pipeline of the rodless cavity of the upper straightening roller pressing cylinder 7 for measuring the pressure of the rodless cavity, wherein a displacement sensor 21 is provided in the upper straightening roller pressing cylinder 7 for accurately measuring the extension amount of the cylinder, and the controller 22 is a single-chip microcomputer.

[0094] Preferably, a straightening method of a roller straightening machine as described in any one of the above items comprises the following steps:

[0095] Step 1) calibrate the upper straightening roller 11 and the lower straightening roller system 12 to the "zero position" state, set the "open" state value, the "open roll gap" state value and the "closed roll gap" state value, and set the protection pressure value;

[0096] Step 2) Press down the upper roller 5 of the pinch roller to hold the head of the strip, and rotate and drag the strip into the frame 2, so that the upper straightening roller 11 and the lower straightening roller system 12 enter the "closed roller gap" state, and then let the strip to be straightened enter the straightening machine for straightening. During the straightening process, the control component continuously adjusts the overlap amount so that the change in the amount does not exceed 0.05mm. At the same time, the control component measures the pressure measurement value in the rodless cavity of the upper straightening roller pressing cylinder 7 in real time. The sum of the pressure measurement values ​​on the transmission side and the operating side of the same upper straightening roller 11 is the straightening pressure of the upper straightening roller 11;

[0097] Step 3) When the straightening pressure is greater than the set protection pressure value, the roller quickly enters the "roller gap opening" state, and an alarm is sounded to remind the staff to check whether the straightened strip is out of range;

[0098] Step 4) When a certain upper straightening roller 11 fails to work, the control component is operated to put it in the "open" state, and the other upper straightening rollers 11 work normally without being affected;

[0099] Step 5) When it is necessary to replace an upper straightening roller 11, the upper straightening roller 11 is lowered onto the lower straightening roller system 12 by operating the control component, and then it is pulled out of the line together with the lower straightening roller system 12, and the new upper straightening roller 11 is placed at the corresponding position of the lower straightening roller system 12 and pushed into the straightening machine frame 2.

[0100] Preferably, Fig. 9 As shown, the calibration method of the "zero position" state in the step 1) is to place the calibration plate 18 between the upper straightening roller 11 and the lower straightening roller system 12, and operate the upper straightening roller to press the piston rod of the oil cylinder 7 to extend through the control component, so that the upper straightening roller 11 is lowered, and the upper straightening roller 11 is in contact with the upper surface of the calibration plate 18, and it is confirmed that the operating side and the transmission side of the upper straightening roller 11 are in contact with the calibration plate 18 without a gap, and the measurement value is read and recorded from the control component. The measurement value plus the thickness value of the calibration plate 18 is the zero position state, and the control component records this position and uses it as a reference for controlling the adjustment of the overlap amount of the upper straightening roller 11 and the lower straightening roller system 12. In the "zero position" state, the piston rod of the upper straightening roller pressing the oil cylinder 7 is extended, but the overlap amount of the upper straightening roller 11 and the lower straightening roller system 12 is zero;

[0101] Set the "open" state value, that is, the upper straightening roller 11 is raised to the highest position, at which time the piston rod of each upper straightening roller pressing cylinder 7 is completely retracted;

[0102] To set the "roll gap opening" state value, the required "roll gap opening" value is set in the control component and the control component records the value. The "roll gap opening" state is 2mm to 3mm larger than the maximum thickness of the strip that the straightening machine can straighten. At this time, the piston rod of the upper straightening roller pressing down cylinder 7 also extends;

[0103] Set the "closed roll gap" state value, that is, the upper straightening roll 11 and the lower straightening roll system 12 overlap each other to produce an overlap amount, set the overlap amount required by the process in the control component, and make the control component record the value, and the overlap amount can be adjusted in real time as needed;

[0104] Set the protection pressure value. Set the protection pressure value in the control component, that is, when the straightening pressure is greater than the protection pressure value, adjust the straightening machine to enter the "open roll gap" state.

[0105] The working states of the straightening roller of the present invention are as follows:

[0106] 1 "Open" state, that is, the upper straightening roller 11 rises to the highest position, at which time the piston rod of each upper straightening roller pressing cylinder 7 is fully retracted.

[0107] 2 "Zero position" state, that is, confirm the zero position of each upper straightening roller and use it as the basis for adjustment. In the zero position state, the piston rod of the upper straightening roller pressing down the oil cylinder 7 extends a certain length, but the overlap between the upper straightening roller 11 and the lower straightening roller system 12 is zero.

[0108] 3 "Open roll gap" state, that is, the roll gap reaches the set roll gap value, which is 2mm to 3mm larger than the maximum thickness of the steel plate that the straightening machine can straighten; at this time, the piston rod of the upper straightening roller pressing down cylinder 7 also extends to a certain length.

[0109] 4 "Closed roll gap" state, that is, the roll gap disappears, the upper straightening roll 11 and the lower straightening roll system 12 overlap each other, resulting in an overlap, which is set from the controller 22.

[0110] When the straightening roller of the present invention is put into operation for the first time, the following preparations should be made:

[0111] 1. Calibrate the system to the "zero position" state by placing the calibration plate 18 between the upper straightening roller 11 and the lower straightening roller system 12 (see Fig. 9 ), operate the upper straightening roller to press down the oil cylinder 7 to extend the piston rod, so that the upper straightening roller 11 descends, and the upper straightening roller working roller 11-1 in the upper straightening roller 11 contacts the upper surface of the calibration plate 18, and confirm that the operating side and the transmission side of the upper straightening roller 11 are in contact with the calibration plate 18 without a gap, and read and record the measurement value of the displacement sensor 21 from the controller 22. The measurement value plus the thickness value of the calibration plate 18 is the zero position, so that the controller 22 records this position and uses it as a reference for controlling the overlap adjustment.

[0112] 2. Set the "roller gap opening" state value. Set the required "roller gap opening" value in the controller and make the controller 22 record the value.

[0113] 3. Set the overlap value in the "closed roll gap" state, set the overlap required by the process in the controller 22, and make the controller 22 record the value. The overlap can be adjusted in real time within a certain range as needed.

[0114] 4. Set a protection pressure value. Set a protection pressure value in the controller 22. That is, when the measured value of the pressure sensor 20 is greater than this value, the straightening machine is in an "open roll gap" state.

[0115] The working principle of the present invention is as follows:

[0116] like Figure 1 As shown, first, the upper roller 5 of the clamping roller presses down to hold the head of the strip, and rotates and drags it into the frame 2 of the straightening machine. The roll gap value of each upper straightening roller 11 is set in advance according to the process requirements, and it is put into the "closed roll gap" state, and then the strip to be straightened enters the straightening machine for straightening. During the straightening process, the controller 22 continuously adjusts the opening degree of the servo valve 19 so that the change in the overlap amount does not exceed 0.05mm. At the same time, the pressure sensor 20 measures the pressure measurement value in the rodless cavity of the upper straightening roller pressing cylinder 7 in real time. The sum of the measurement values ​​of the pressure sensors 20 on the transmission side and the operating side of the same upper straightening roller 11 is the straightening pressure of the upper straightening roller 11.

[0117] When the straightening pressure is greater than the set protection pressure value, the straightening machine quickly enters the "open roll gap" state and sounds an alarm to remind the staff to check whether the straightened steel plate is out of range, which further protects the equipment from damage.

[0118] When a certain upper straightening roller 11 fails to work, it is operated to be in the "open" state, and the other upper straightening rollers 11 work normally without being affected.

[0119] When it is necessary to replace an upper straightening roller 11, operate it to lower it onto the lower straightening roller system 12, then pull it out of the line together with the lower straightening roller system 12, put the new upper straightening roller 11 at the corresponding position of the lower straightening roller system 12 and push it into the straightening machine frame. This process does not require disassembly of other upper straightening rollers, thereby improving work efficiency and reducing workload.

[0120] Each upper straightening roller of the straightening machine of the present invention has an independent guide window, namely, the upper straightening roller independent guide window. The upper straightening roller can be driven to rise or fall independently in the upper straightening roller independent guide window by pressing down the oil cylinder, thereby adjusting the overlap required for straightening. The lifting and lowering does not require the guidance of the upper straightening roller bearing seat, thereby realizing true independent adjustment, so that the lifting and lowering of each upper straightening roller is not affected by other upper straightening rollers, thereby increasing the flexibility of the straightening machine and reducing the maintenance workload. At the same time, the straightening roller bearing seat is well stressed, and is fixed on the frame through the upper straightening roller pressure plate to constrain the axial stringing of the upper straightening roller, resulting in less axial stringing.

[0121] When an upper straightening roller fails to work due to a malfunction, the present invention operates the upper straightening roller to be in an "open" state through the control component, and other upper straightening rollers work normally without being affected. When an upper straightening roller needs to be replaced, the upper straightening roller is lowered onto the lower straightening roller system through the control component, and then pulled out of the line together with the lower straightening roller system, and the new upper straightening roller is placed at the corresponding position of the lower straightening roller system and pushed into the straightening machine frame. This process does not require disassembling other upper straightening rollers, thereby improving work efficiency and reducing workload.

[0122] The straightening machine of the present invention adopts a closed frame, the sides of the operating side archway and the transmission side archway are connected by a crossbeam, and the tops are connected by a connecting plate, so as to form a complete frame. The steel plate thickness of the operating side archway and the transmission side archway is 50-150mm, and can be processed by a whole piece of steel plate or integrally cast. The frame of the present invention has good rigidity, high precision, small deformation, and can significantly improve the straightening quality.

[0123] The operating side and transmission side of each upper straightening roller of the present invention are designed with an upper straightening roller pressing cylinder, a servo valve, a displacement sensor and a pressure sensor for accurately and independently controlling the pressing amount and the closed-loop control of the straightening pressure. The oil inlet pipeline of the rodless chamber of the upper straightening roller pressing cylinder of the present invention is designed with a pressure sensor to realize closed-loop control of the straightening pressure and overload protection, thereby avoiding damage to the equipment due to overload. At the same time, a control component is used to realize the adjustment of the pressing amount, which can adapt to the high-speed operation of the equipment on the one hand, and realize overload protection on the other hand.

[0124] The invention has the advantages of simple structure, convenient use, good control effect, strong practicability, low assembly cost, safe and reliable operation process, and the maximum working speed can reach 500 meters per minute.

[0125] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

[0126] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A straightening method for a roller straightening machine, characterized in that: The straightening process is carried out using a roller straightening machine, which includes the following steps: Step 1) calibrating the upper straightening roller (11) and the lower straightening roller system (12) to a "zero position" state, setting an "open" state value, an "open roll gap" state value, and a "closed roll gap" state value, and setting a protection pressure value; Step 2) The upper roller (5) of the pinch roller is pressed down to hold the head of the strip, and the strip is dragged and fed into the frame (2) by rotation, so that the upper straightening roller (11) and the lower straightening roller system (12) enter a "closed roller gap" state, and then the strip to be straightened enters the straightening machine for straightening. During the straightening process, the control component continuously adjusts the overlap amount so that the change in the overlap amount does not exceed 0.05 mm. At the same time, the control component measures the pressure measurement value in the rodless cavity of the upper straightening roller pressing cylinder (7) in real time. The sum of the pressure measurement values ​​on the transmission side and the operating side of the same upper straightening roller (11) is the straightening pressure of the upper straightening roller (11); Step 3) When the straightening pressure is greater than the set protection pressure value, the "roll gap opening" state is quickly entered, and an alarm is sounded to remind the staff to check whether the straightened strip is out of range; Step 4) when a certain upper straightening roller (11) fails to work, the control component is operated to put it in an "open" state, and the other upper straightening rollers (11) work normally without being affected; Step 5) When a certain upper straightening roller (11) needs to be replaced, the upper straightening roller (11) is lowered onto the lower straightening roller system (12) by operating the control component, and then it is pulled out of the line together with the lower straightening roller system (12), and a new upper straightening roller (11) is placed at a corresponding position of the lower straightening roller system (12) and pushed into the straightening machine frame (2); The roller straightening machine comprises a pinch roller pressing cylinder (1), a frame (2), pinch rollers, an upper straightening roller pressing cylinder (7), an upper straightening roller (11), a lower straightening roller system (12), a straightening roller transmission assembly (13), a pinch roller transmission assembly (14) and a control assembly, wherein the pinch roller pressing cylinder (1), the pinch rollers, the upper straightening roller pressing cylinder (7), the upper straightening roller (11) and the lower straightening roller system (12) are all mounted on the frame (2), the upper straightening roller (11) is in plurality, wherein the plurality of upper straightening rollers (11) are arranged at the upper end of the lower straightening roller system (12), the upper straightening roller pressing cylinder (7) is in plurality, wherein the upper straightening roller pressing cylinder (7) is arranged at the upper end of the corresponding upper straightening roller (11) and is connected to the pinch roller transmission assembly (13), and the upper straightening roller transmission assembly (14) is arranged at the upper end of the corresponding upper straightening roller (11). The axis of the roller is parallel to the axis of the lower straightening roller system (12), wherein the pinch roller comprises an upper pinch roller roller (5) and a lower pinch roller roller (6), wherein the upper pinch roller roller (5) is arranged at the upper end of the lower pinch roller roller (6), wherein the top height of the lower pinch roller roller (6) is in the same horizontal plane as the top height of the lower straightening roller system (12), the pinch roller pressing cylinder (1) is arranged at the top of the upper pinch roller roller (5) and is connected, the straightening roller transmission assembly (13) is respectively connected to a plurality of upper straightening rollers (11) and the lower straightening roller system (12), wherein the pinch roller transmission assembly (14) is respectively connected to the upper pinch roller roller (5) and the lower pinch roller roller (6), wherein the pinch roller pressing cylinder (1) and the plurality of upper straightening roller pressing cylinders (7) are respectively connected to the control assembly.

2. The straightening method of the roller straightening machine according to claim 1, characterized in that: The "zero position" state calibration method in step 1) is to place the calibration plate (18) between the upper straightening roller (11) and the lower straightening roller system (12), and to operate the upper straightening roller to press the oil cylinder (7) through the control component to extend the piston rod, so that the upper straightening roller (11) is lowered, and the upper straightening roller (11) is in contact with the upper surface of the calibration plate (18), and it is confirmed that the operating side and the transmission side of the upper straightening roller (11) are in contact with the calibration plate (18) without a gap, and the measurement value is read and recorded from the control component. The measurement value plus the thickness value of the calibration plate (18) is the zero position state, and the control component records this position and uses it as a reference for adjusting the overlap amount of the upper straightening roller (11) and the lower straightening roller system (12). In the "zero position" state, the piston rod of the upper straightening roller pressing the oil cylinder (7) is extended, but the overlap amount of the upper straightening roller (11) and the lower straightening roller system (12) is zero; The "open" state value is set, that is, the upper straightening roller (11) is raised to the highest position, at which time the piston rod of each upper straightening roller pressing cylinder (7) is completely retracted; To set the "roll gap opening" state value, the control component is set to the required "roll gap opening" value and the control component is made to record the value. The "roll gap opening" state is 2mm to 3mm greater than the maximum thickness of the strip that the straightening machine can straighten. At this time, the piston rod of the upper straightening roller pressing down cylinder (7) is also extended. Setting a "closed roll gap" state value, that is, the upper straightening roll (11) and the lower straightening roll system (12) overlap each other to produce an overlap amount, setting the overlap amount required by the process in the control component, and making the control component record the value, and the overlap amount can be adjusted in real time according to needs; Set the protection pressure value. Set the protection pressure value in the control component, that is, when the straightening pressure is greater than the protection pressure value, adjust the straightening machine to enter the "open roll gap" state.

3. The straightening method of the roller straightening machine according to claim 1, characterized in that: The frame (2) comprises a connecting plate (2-1), an operating side archway (2-2), a base (2-3), a first crossbeam (2-4), a second crossbeam (2-5), a third crossbeam (2-6), a fourth crossbeam (2-7), a transmission side archway (2-8), a pinch roller guide window (2-9), a lower straightening roller system installation window (2-10), an upper straightening roller independent guide window (2-11), a pinch roller pressing cylinder installation hole (2-12) and an upper straightening roller pressing cylinder installation hole (2-13), wherein the operating side archway (2-2) and the transmission side archway (2-8) are relatively fixed to the base (2-3) by bolts, wherein The middle base (2-3) is installed on the equipment foundation, the first crossbeam (2-4), the second crossbeam (2-5), the third crossbeam (2-6) and the fourth crossbeam (2-7) respectively connect the sides of the operating side archway (2-2) and the transmission side archway (2-8) from top to bottom by bolts and positioning pins, wherein the connecting plate (2-1) connects the tops of the operating side archway (2-2) and the transmission side archway (2-8) by bolts and positioning pins, and the pinch roller guide window (2-9) is arranged between the operating side archway (2-2) and the transmission side archway (2-8) for installing the pinch roller upper roller (5) and the pinch roller lower roller (6), wherein The shape of the pinch roller guide window (2-9) is an "8"-shaped structure. The lower straightening roller system installation window (2-10) is arranged between the operation side archway (2-2) and the transmission side archway (2-8), and the lower straightening roller system installation window (2-10) is arranged in parallel with the pinch roller guide window (2-9), wherein the lower straightening roller system installation window (2-10) is used to install the lower straightening roller system (12). The upper straightening roller independent guide window (2-11) is arranged on the top of the lower straightening roller system installation window (2-10), wherein the upper straightening roller independent guide window (2-11) is used to install the upper straightening roller (11), and the pinch roller pressure oil The cylinder mounting hole (2-12) is arranged at the top of the pinch roller guide window (2-9), wherein the pinch roller pressing cylinder mounting hole (2-12) is used to install the pinch roller pressing cylinder (1), the upper straightening roller pressing cylinder mounting hole (2-13) is arranged at the top of the upper straightening roller independent guide window (2-11), wherein the upper straightening roller pressing cylinder mounting hole (2-13) is used to install the upper straightening roller pressing cylinder (7), and the operating side and the driving side of the pinch roller guide window (2-9), the lower straightening roller system mounting window (2-10), and the upper straightening roller independent guide window (2-11) are all provided with a pressure plate for preventing the pinch roller or the straightening roller from axially moving.

4. The straightening method of the roller straightening machine according to claim 3, characterized in that: The thickness of the steel plates of the operating side archway (2-2) and the transmission side archway (2-8) is 50 to 150 mm, and they can be processed from a whole piece of steel plate or integrally cast. The third crossbeam (2-6) is arranged at the upper straightening roller independent guide window (2-11) to improve the rigidity and strength of the upper straightening roller independent guide window (2-11), wherein the fourth crossbeam (2-7) is arranged at the bottom of the lower straightening roller system installation window (2-10) to provide support for the lower straightening roller system installation window (2-10).

5. The straightening method of the roller straightening machine according to claim 3, characterized in that: The lower end of the pinch roller pressing cylinder (1) is flange-mounted and fixed in the pinch roller pressing cylinder mounting hole (2-12) by bolts, wherein the lower end of the pinch roller pressing cylinder (1) is threadedly connected to the pinch roller cylinder joint (3), and the bottom of the pinch roller cylinder joint (3) is connected to the top of the transition joint (4) by a pin, wherein the bottom of the transition joint (4) is connected to the bearing seats on both sides of the pinch roller upper roller (5) by bolts, wherein the two sides of the bearing seats of the pinch roller upper roller (5) form a sliding pair with clearance fit with the upper part of the pinch roller guide window (2-9), and the pinch roller The lower roller (6) is installed on the lower part of the pinch roller guide window (2-9), wherein the bearing seat of the lower roller (6) forms a sliding pair with clearance fit with the lower part of the pinch roller guide window (2-9) on both sides, and the operation side and transmission side of the pinch roller guide window (2-9) are provided with a pinch roller pressure plate (15), wherein the pinch roller pressure plate (15) is fixed to the frame (2) by bolts to constrain the axial movement of the upper roller (5) and the lower roller (6), and as the pinch roller pressure cylinder (1) extends and retracts, the upper roller (5) will rise or fall.

6. The straightening method of a roller straightening machine according to claim 3, characterized in that: The lower end of the upper straightening roller pressing cylinder (7) is flange-mounted and fixed in the upper straightening roller pressing cylinder mounting hole (2-13) by bolts, wherein the lower end of the upper straightening roller pressing cylinder (7) is connected to the upper straightening roller pressing cylinder joint (9) passing through the graphite sleeve (8), wherein the graphite sleeve (8) is fixed in the frame (2) by bolts, and one end of the upper straightening roller pressing cylinder joint (9) passes through the inner hole of the graphite sleeve (8) and is in a flange-mounted manner with the graphite sleeve (8). The sliding pair is formed into a clearance fit and is connected to the lower end of the upper straightening roller pressing cylinder (7) through a thread inside the frame (2), wherein the other end of the upper straightening roller pressing cylinder joint (9) is connected to the bearing seat of the upper straightening roller (11) through a pressure block (10), wherein the pressure block (10) is fixed to the bearing seat of the upper straightening roller (11) through bolts, and the graphite sliding sleeve (8), the upper straightening roller pressing cylinder joint (9), the pressure block (10) and the upper straightening roller (11) are connected to the upper straightening roller (11) through a pressure block (10). 1) is arranged inside the upper straightening roller independent guide window (2-11), the upper straightening roller (11) is composed of an upper straightening roller working roller (11-1) and two upper straightening roller bearing seats (11-2), wherein the two upper straightening roller bearing seats (11-2) are respectively arranged on the operation side and the transmission side of the upper straightening roller working roller (11-1), wherein the two sides of the upper straightening roller bearing seat (11-2) form a clearance fit sliding pair with the upper straightening roller independent guide window (2-11), and upper straightening roller pressure plates (16) are provided on both sides of the upper straightening roller independent guide window (2-11), wherein the upper straightening roller pressure plates (16) are fixed to the frame (2) by bolts to constrain the axial stringing of the upper straightening roller (11), and the upper straightening roller pressing cylinder (7) can drive the upper straightening roller (11) to rise or fall independently in the upper straightening roller independent guide window (2-11), thereby adjusting the overlap required for straightening.

7. The straightening method of a roller straightening machine according to claim 3, characterized in that: The lower straightening roller system (12) is installed as a whole in the lower straightening roller system installation window (2-10), wherein the lower straightening roller system (12) comprises a lower straightening roller system working roller (12-1) and two groups of lower straightening roller system bearing seats (12-2), wherein the two groups of lower straightening roller system bearing seats (12-2) are respectively arranged on the operation side and the transmission side of the lower straightening roller system working roller (12-1), wherein both sides of the lower straightening roller system bearing seats (12-2) form a sliding pair with clearance fit with the lower straightening roller system installation window (2-10), and lower straightening roller system pressure plates (17) are provided on both sides of the lower straightening roller system installation window (2-10), wherein the lower straightening roller system pressure plates (17) are fixed to the frame (2) by bolts to restrict the axial stringing of the lower straightening roller system (12), and the lower straightening roller system (12) does not rise or fall as a whole, wherein the lower straightening roller system bearing seats (12-2) are an integral structure.

8. The straightening method of a roller straightening machine according to claim 1, characterized in that: The straightening roller transmission assembly (13) comprises a variable frequency motor (13-1), a reducer (13-2), a gear distribution box (13-3) and a universal coupling (13-4), wherein the variable frequency motor (13-1) is connected to the reducer (13-2) via a coupling, wherein the reducer (13-2) is connected to the gear distribution box (13-3) via a coupling, wherein the gear distribution box (13-3) is connected to the plurality of upper straightening rollers (11) and the lower straightening roller system (12) via universal couplings. The pinch roller transmission assembly (14) comprises a pinch roller transmission variable frequency motor (14-1), a pinch roller reducer (14-2) and a pinch roller universal coupling (14-3), wherein the pinch roller transmission variable frequency motor (14-1) and the pinch roller reducer (14-2) are connected via a coupling, wherein the pinch roller reducer (14-2) and the pinch roller upper roller (5) and the pinch roller lower roller (6) are respectively connected via the pinch roller universal coupling (14-3).

9. The straightening method of a roller straightening machine according to claim 1, characterized in that: The control component comprises a servo valve (19), a pressure sensor (20), a displacement sensor (21) and a controller (22), wherein an upper straightening roller pressing cylinder (7) is provided above the transmission side and the operating side of each upper straightening roller (11), wherein the upper straightening roller pressing cylinder (7) is connected to the servo valve (19) via a pipeline, wherein the servo valve (19) and the controller (22) are connected via a cable, and a pressure sensor (20) is provided on the oil inlet pipeline of the rodless cavity of the upper straightening roller pressing cylinder (7) for measuring the pressure of the rodless cavity, wherein a displacement sensor (21) is provided in the upper straightening roller pressing cylinder (7) for accurately measuring the extension amount of the cylinder.

10. The straightening method of a roller straightening machine according to claim 9, characterized in that: The controller (22) is a single chip microcomputer.

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