Reversible high-precision asynchronous rolling mill

Abstract

The utility model relates to a reversible high-precision asynchronous rolling mill, which belongs to the field of metal product precision machining technical equipment and comprises a rolling mill body, an uncoiling mechanism and a coiling mechanism, the uncoiling mechanism and the coiling mechanism are arranged on the left side and the right side of the rolling mill body, and the rolling mill body comprises an archway, a rolling mill base arranged at the bottom of the archway, a roller set and a transmission roller set. The roller set comprises an upper supporting roller, an upper working roller in transmission connection with the upper supporting roller, a lower supporting roller and a lower working roller in transmission connection with the lower supporting roller. The two ends of the rolling mill body are provided with a first driving mechanism and a second driving mechanism which are used for driving the upper working roller and the lower working roller respectively. Each of the uncoiling mechanism and the coiling mechanism comprises a winding drum, an ironing roller and a base, a groove is formed in the winding drum, and a torsion bar for adjusting the position of the base is arranged on the winding drum; through contact transmission of the supporting rollers and the working rollers, the rotating stability and rolling precision of the working rollers are improved; the winding and unwinding positions are adjusted by rotating the torsion bar, the thin strip is rectified to be wound in order, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of metal product precision processing technology equipment, and relates to a reversible high-precision asynchronous rolling mill, in particular to a reversible high-precision asynchronous rolling mill suitable for thin strips. Background Art

[0002] Rolling mills are equipment that implement metal processing processes, including synchronous rolling mills and asynchronous rolling mills. Synchronous rolling mills use powerful rolling forces to deform metal materials into the desired shape, and can be used to manufacture various profiles and blanks. Synchronous rolling mills are more difficult to produce for difficult-to-process or thin-gauge materials, so a new rolling method is needed. This new rolling method is asynchronous rolling, which needs to be achieved using asynchronous rolling mills. Asynchronous rolling is a type of rolling with unequal speeds, where the upper and lower working rolls have different surface linear speeds. This reduces rolling forces, minimizes deformation of the rolling mill, and reduces roll wear.

[0003] However, traditional asynchronous rolling mills drive the working rolls by driving the support rolls. The transmission process is relatively complicated and the maintenance cost is too high. It is suitable for rolling thick materials, but for rolling thin materials, the rotation of the working rolls is unstable and the rolling accuracy is not high, which leads to uneven winding and low production efficiency. At the same time, when winding thin materials, the winding and unwinding sleeves are pasted with wire tape to prevent slipping. Although slipping is prevented, offset marks are left on the surface of the strip. Utility Model Content

[0004] In view of this, the utility model provides a reversible high-precision asynchronous rolling mill in order to solve the problems that the transmission process of traditional asynchronous rolling mill is relatively complicated and the maintenance cost is too high, and for thin material rolling, the rotation of the working roll is unstable and the rolling accuracy is not high, which leads to uneven winding and low production efficiency, as well as anti-slip problems of thin strip winding.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] A reversible high-precision asynchronous rolling mill comprises a rolling mill body, an uncoiling mechanism and a coiling mechanism arranged on the left and right sides of the rolling mill body, the rolling mill body comprising a memorial arch, a rolling mill base arranged at the bottom of the memorial arch, a roll group and a drive roll group, the roll group comprising an upper support roll, an upper working roll drivingly connected to the upper support roll, a lower support roll, and a lower working roll drivingly connected to the lower support roll, a first drive mechanism and a second drive mechanism for driving the upper working roll and the lower working roll respectively being arranged at both ends of the rolling mill body;

[0007] The unwinding mechanism and the winding mechanism both include a reel, an ironing roller, an unwinding reel, an unwinding reel and a base fixed under the unwinding mechanism and the winding mechanism. The reel is provided with a groove and a torsion rod for adjusting the position of the base.

[0008] The system also includes a pressure sensor, a roller-changing track, and a process platform. The drive roller assembly includes two pairs of flattening rollers and two pairs of steering rollers fixed to the process platform. A thickness gauge is located between the flattening and steering rollers. Beneficial effects: The thickness gauge uses X-rays to irradiate the strip, generating a voltage feedback signal, allowing real-time reading of the strip's thickness.

[0009] Furthermore, archways are symmetrically arranged at both ends of the rolling mill body. The upper and lower support rolls are fixedly mounted on the archways via bearing blocks. The lower work roll is fixedly mounted on the lower support roll bearing block via a stopper below the bearing block, and the upper work roll is fixed to the upper support roll bearing block via a stopper below the bearing block. Beneficial Effect: The upper and lower work rolls are driven to rotate by the first and second drive mechanisms, thereby driving the upper and lower support rolls to rotate.

[0010] Furthermore, the first drive mechanism and the second drive mechanism both include a coupling, a second reducer and a second private service AC motor that drives the second reducer; the upper working roll and the lower working roll are connected to the output ends of the second reducer in the first drive mechanism and the second drive mechanism through the first main coupling and the second main coupling respectively.

[0011] Furthermore, the second private service AC motor is connected to the second reducer through a pin coupling.

[0012] Furthermore, the unwinding mechanism and the rewinding mechanism also include a second reducer and a first private service AC motor driving the first reducer, and the first reducer motor is connected to the first private service AC motor through a belt.

[0013] Furthermore, the upper and lower work rolls are driven by second AC motors controlled by PLC at different frequencies. Beneficial Effect: The speed difference between the upper and lower work rolls creates a rolling zone to achieve the effect of thinning the thin strip.

[0014] Furthermore, a pulley adapted to the roller changing track is provided under the bearing seat of the lower support roller.

[0015] Furthermore, the ironing roller is pneumatically activated and deactivated, with PLC-controlled solenoid valves installed on both the unwinder and reel sides to indirectly control the pneumatic system. This has the following beneficial effects: the PLC-controlled solenoid valve on the unwinding mechanism controls the ironing roller away from the reel; the PLC-controlled solenoid valve on the reeling mechanism controls the ironing roller to contact the reel surface, squeezing out air and rolling oil from between the strips, achieving optimal rewinding performance.

[0016] Furthermore, the pressure sensor is fixedly installed under the flattening roller base.

[0017] Furthermore, the flattening roller is arranged on a side close to the roller group, and two pairs of direction rollers are respectively arranged on a side of the process platform close to the unwinding coiler and the unwinding coiler.

[0018] Furthermore, a slider is provided inside the drum, and the slider is pushed to move by rotating the torsion bar to adjust the expansion and contraction of the drum body. Beneficial effect: The strip in the groove is clamped.

[0019] The beneficial effects of the present invention are:

[0020] 1. The reversible high-precision asynchronous rolling mill disclosed in the present invention improves the stability of the working roll rotation during the rolling process and the rolling accuracy through contact transmission between the support roll and the working roll, and the transmission method of the working roll driving the support roll is also relatively simple.

[0021] 2. The reversible high-precision asynchronous rolling mill disclosed by the present invention has a base that adjusts the position of the winding and unwinding by rotating the torsion bar, corrects the deviation of the thin strip and makes the thin strip wound neatly, thereby improving production efficiency.

[0022] 3. In the reversible high-precision asynchronous rolling mill disclosed by the utility model, the pressure exerted by the thin strip on the flattening roller is transmitted to the industrial control host computer through a pressure sensor, thereby realizing real-time monitoring and adjustment of the thin strip tension and ensuring fine control of the rolling process. At the same time, by introducing a pneumatic device to intelligently control the start and stop of the ironing roller, the winding process is optimized, making the winding effect more ideal. In addition, an adjustable base and sleeve assembly is designed, and a torsion bar mechanism is used to adjust the expansion and contraction of the barrel and adjust the position of the base. This design not only enhances the flexibility of the equipment, but also greatly improves the uniformity of the winding.

[0023] 4. The reversible high-precision asynchronous rolling mill disclosed in the present invention adopts PLC (programmable logic controller) as the core control system to accurately control the servo AC motor to drive the upper and lower working rolls at differentiated frequencies; at the same time, the servo AC motor has the advantages of stable operation, rapid response, good controllability, and high sensitivity, which can ensure the stable progress of asynchronous rolling. The introduction of the servo AC motor greatly enhances the smoothness control during the asynchronous rolling process, effectively reduces the oscillation phenomenon, and thus significantly improves the production efficiency and the accuracy of position control.

[0024] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0026] Figure 1 This is a main view of a reversible high-precision asynchronous rolling mill of the utility model;

[0027] Figure 2 This is a front view of a rolling mill body in a reversible high-precision asynchronous rolling mill of the utility model;

[0028] Figure 3 This is a main view of a process platform in a reversible high-precision asynchronous rolling mill of the utility model;

[0029] Figure 4 This is a main view of a reversible high-precision thickness gauge for asynchronous rolling mills according to the present invention;

[0030] Figure 5 This is a front view of an uncoiling mechanism and a coiling mechanism in a reversible high-precision asynchronous rolling mill according to the present invention;

[0031] Figure 6 This is a main view of a reel in a reversible high-precision asynchronous rolling mill of the utility model;

[0032] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0033] Figure 8 This is a front view of a first drive mechanism and a second drive mechanism in a reversible high-precision asynchronous rolling mill of the utility model.

[0034] Figure numerals: rolling mill body 1, arch 110, rolling mill base 111, uncoiling mechanism 2, reel 21, groove 210, torsion bar 211, first reducer 22, first servo AC motor 23, base 24, belt 25, ironing roller 26, winding mechanism 3, pressure sensor 4, roll changing track 5, process platform 6, thickness gauge 7, upper support roller 8, upper working roller 9, lower working roller 10, lower support roller 11, flattening roller 12, direction roller 13, coupling 14, second servo AC motor 15, second reducer 16, pin coupling 17. DETAILED DESCRIPTION

[0035] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0036] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0037] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] like Figures 1-8 A reversible high-precision asynchronous rolling mill shown in FIG. 1 includes a rolling mill body 1, an uncoiling mechanism 2 and a coiling mechanism 3 arranged on the left and right sides of the rolling mill body 1, a pressure sensor 4, a roll-changing track 5 and a process platform 6; wherein the rolling mill body 1 includes an archway 110, a rolling mill base 111 arranged at the bottom of the archway 110, a rolling roller group and a transmission roller group.

[0039] The roll stack includes an upper support roll 8, an upper work roll 9 transmission-connected to the upper support roll 8, a lower support roll 11, and a lower work roll 10 transmission-connected to the lower support roll 11. A first drive mechanism and a second drive mechanism are provided at both ends of the rolling mill body 1, respectively, for driving the upper work roll 9 and the lower work roll 10. The lower work roll 10 is fixed to the bearing seat of the lower support roll 11 by a stopper under the bearing seat. The upper work roll 9 is fixed to the bearing seat of the upper support roll 8 by a stopper under the bearing seat. The first and second drive mechanisms drive the upper work roll 9 and the lower work roll 10 to rotate, thereby driving the upper support roll 8 and the lower support roll 11 to rotate.

[0040] The first and second drive mechanisms each include a coupling 14, a second reducer 16, and a second AC motor 15 driving the second reducer 16. The second AC motor 15 and the second reducer 16 are connected via a pin coupling 17. The upper and lower work rolls 9 and 10 are connected to the output ends of the second reducer 16 in the first and second drive mechanisms via a first and second main couplings, respectively. The second AC motor 15 offers advantages such as stable operation, rapid response, good controllability, and high sensitivity, ensuring stable asynchronous rolling. The upper and lower work rolls 9 and 10 are driven at different frequencies by the second AC motor 15 controlled by a PLC. The speed difference between the upper and lower work rolls creates a rolling zone, achieving the effect of thinning the thin strip.

[0041] A pulley adapted to the roller-changing track 5 is provided below the bearing seat of the lower support roller 11 .

[0042] The archways 110 are symmetrically arranged at both ends of the rolling mill body 1 , and the upper support roller 8 and the lower support roller 11 are fixedly mounted on the archways 110 via bearing seats.

[0043] The drive roller assembly consists of two pairs of flattening rollers 12 and two pairs of steering rollers 13, with bearing blocks fixed to the process platform 6. The flattening rollers 12 are located near the roll assembly, while the steering rollers 13 are located near the winder and unwinder. A thickness gauge 7 is installed between the flattening rollers 12 and the steering rollers 13. The gauge 7 uses X-rays to irradiate the strip, generating a voltage feedback signal, which allows real-time reading of the strip thickness.

[0044] The pressure sensor 4 is fixedly installed under the base of the flattening roller 12 close to the rewinding and unwinding side.

[0045] The unwinding mechanism 2 and the winding mechanism 3 each include a reel 21, an ironing roller 26, an unwinding machine, an unwinding machine, a base 24 fixed under the unwinding mechanism 2 and the winding mechanism 3, a second reducer 22, and a first private AC motor 23 driving the first reducer 22; a bottom rail 241 is provided under the base 24, the bottom rail 241 is arranged on the rolling mill base 111, and the base 24 can move along the bottom rail 241; the reel 21 is connected to the second reducer 22 through a flange, and the second reducer 22 is fixed on the bottom The first reduction motor 22 is connected to the first private AC motor 23 through a belt 25, and the ironing roller 26 is started and stopped by a pneumatic device. One side of the unwinding mechanism 2 and the winding mechanism 3 is provided with a PLC-controlled solenoid valve that indirectly controls the pneumatic device. The PLC-controlled solenoid valve on the unwinding mechanism 2 side controls the ironing roller 26 to move away from the reel 21; the PLC-controlled solenoid valve on the winding mechanism 3 side controls the ironing roller 26 to fit the surface of the reel 21, squeezing out the air and rolling oil between the thin strips to achieve a better winding effect.

[0046] The reel 21 is provided with a groove 210 and a torsion bar 211 for adjusting the position of the base 24. A slider is located inside the reel 21. Material is inserted into the groove 210, and the slider is moved by rotating the torsion bar 211, thereby adjusting the expansion and contraction of the drum body to clamp the material in the groove 210 and prevent material slippage. In the event of winding deviation, the torsion bar 211 can be rotated to form a threaded motion, causing the base 24 to move along the bottom track 241, preventing the winding of the thin strip from deviating and causing uneven winding.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A reversible high-precision asynchronous rolling mill, characterized in that: The rolling mill comprises a main body, an uncoiling mechanism and a coiling mechanism arranged on the left and right sides of the main body, the main body comprising an archway, a rolling mill base arranged at the bottom of the archway, a roll group and a drive roll group, the roll group comprising an upper support roll, an upper working roll drivingly connected to the upper support roll, a lower support roll and a lower working roll drivingly connected to the lower support roll, and a first drive mechanism and a second drive mechanism for driving the upper working roll and the lower working roll are respectively arranged at both ends of the main body; The unwinding mechanism and the winding mechanism both include a reel, an ironing roller, an unwinding reel, an unwinding reel and a base fixed under the unwinding mechanism and the winding mechanism. The reel is provided with a groove and a torsion bar for adjusting the position of the base.

2. The reversible high-precision asynchronous rolling mill according to claim 1, characterized in that: Also includes: Pressure sensor, roller changing track and process platform, the driving roller group includes two pairs of flattening rollers and two pairs of direction rollers fixed on the process platform, and a thickness gauge is set between the flattening rollers and the direction rollers.

3. The reversible high-precision asynchronous rolling mill according to claim 1, characterized in that: The arches are symmetrically arranged at both ends of the rolling mill body, the upper support roller and the lower support roller are fixedly mounted on the arches through bearing seats, the lower working roller is fixedly mounted on the lower support roller bearing seat through the limiter under the bearing seat, and the upper working roller is fixed on the upper support roller bearing seat through the limiter under the bearing seat.

4. The reversible high-precision asynchronous rolling mill according to claim 3, characterized in that: The first drive mechanism and the second drive mechanism both include a coupling, a second reducer and a second private service AC motor that drives the second reducer; the upper working roll and the lower working roll are connected to the output ends of the second reducers in the first drive mechanism and the second drive mechanism through the first main coupling and the second main coupling respectively.

5. The reversible high-precision asynchronous rolling mill according to claim 4, characterized in that: The second private service AC motor is connected to the second reducer through a pin coupling.

6. The reversible high-precision asynchronous rolling mill according to claim 1, characterized in that: The unwinding mechanism and the rewinding mechanism further include a second reducer and a first private service AC motor that drives the first reducer, and the first reducer motor is connected to the first private service AC motor through a belt.

7. The reversible high-precision asynchronous rolling mill according to claim 4, characterized in that: The upper working roll and the lower working roll are driven at different frequencies by the second private service AC motor controlled by PLC respectively.

8. The reversible high-precision asynchronous rolling mill according to claim 2, characterized in that: A pulley adapted to the roller-changing track is provided below the bearing seat of the lower support roller.

9. The reversible high-precision asynchronous rolling mill according to claim 1, characterized in that: The ironing roller is started and stopped by a pneumatic device, and one side of the unwinding mechanism and the winding mechanism is provided with a PLC-controlled solenoid valve that indirectly controls the pneumatic device.

10. The reversible high-precision asynchronous rolling mill according to claim 1, characterized in that: A slider is provided inside the reel, and the expansion and contraction of the reel body is adjusted by rotating the torsion bar to push the slider.

Images