Novel coiling machine pinch roll

Abstract

The invention discloses a novel coiler pinch roll, and relates to the technical field of hot rolling production equipment. The novel coiling machine pinch roll comprises a rack, a pinch roll system, an upper pinch roll hydraulic cylinder, a locking mechanism, a guide device, a water cutting device and a polishing system, the novel coiling machine pinch roll upgrades a traditional swing arm type structure into a memorial archway type structure, and the novel coiling machine pinch roll has the remarkable advantages that firstly, the control precision is improved, the hydraulic cylinder drives an upper pinch roll body to vertically lift, and the upper pinch roll body is driven by the locking mechanism; the fixed lower assembly is cooperatively operated, so that swinging during high-speed rolling is avoided, uniform clamping force is ensured, and the coiling quality is improved; secondly, the coil shape of the plate strip is optimized, accurate guiding and deviation rectifying are conducted through a stable structure and a guiding device, and coil shape irregularity and edge warping are prevented; and thirdly, the maintenance cost is reduced, an integrated welding rack and a mature hydraulic technology are adopted, the structure is simplified, fault points are reduced, maintenance and overhaul are facilitated, the downtime is shortened, and the operation cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hot rolling production equipment, in particular to a novel coiler pinch roller. Background Art

[0002] In hot rolling production lines, the coiler pinch rolls are critical equipment for ensuring smooth coiling of the strip. Traditional pinch roll designs often utilize a swing-arm structure, which, in previous production scenarios, barely met basic coiling requirements. However, with increasingly stringent production requirements, particularly in the high-precision process environments of high-speed rolling, the limitations of traditional swing-arm pinch rolls in terms of control accuracy and ensuring excellent strip coil shape have been exacerbated, ultimately becoming a key bottleneck restricting product quality improvement and production efficiency optimization.

[0003] First, control accuracy is severely insufficient. Due to the inherent characteristics of the swing-arm structure, the arm is prone to a certain degree of swing under the complex conditions of high-speed rolling. This seemingly minor swing directly causes the pinch roll's clamping force on the strip to become unstable and uneven. This uneven clamping force affects the coiling quality of the strip, making it difficult to ensure product quality.

[0004] Secondly, achieving ideal coil shape is difficult. Due to the oscillation of the pinch rollers, coil shape issues frequently occur during the coiling process. Common manifestations include uneven coiling and warping defects at the edges. These issues not only affect the product's appearance but also compromise subsequent processing compatibility, increasing the defective rate during production and resulting in financial losses for the company.

[0005] Furthermore, traditional coiler pinch rollers are expensive to maintain. The inherently complex swing-arm structure makes troubleshooting and repairs difficult and time-consuming, leading to significant equipment downtime. This significantly increases production and operating costs. To address these shortcomings of the existing technology, the present invention provides a novel coiler pinch roller that addresses these issues. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a new type of coiler pinch roller, upgrading the traditional swing-arm structure to a arch-style structure. This offers significant advantages: First, control precision is improved. A hydraulic cylinder drives the upper pinch roller body vertically up and down, working in conjunction with a fixed lower assembly to prevent swinging during high-speed rolling, ensuring uniform clamping force and improving coiling quality. Second, the coil shape of the strip is optimized. Precise guidance and correction through a stable structure and guide device prevents uneven coil shape and edge warping. Third, maintenance costs are reduced. The use of an integrated welded frame and mature hydraulic technology simplifies the structure, reduces failure points, facilitates maintenance and repair, shortens downtime, and reduces operating costs. This design fully meets the requirements of modern hot rolling production lines for high efficiency, high quality, and low energy consumption.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A new type of coiler pinch roller, comprising:

[0008] The frame is composed of columns and beams;

[0009] A pinch roller system, comprising an upper pinch roller body and a lower pinch roller body arranged in parallel, wherein the lower pinch roller body is fixed to the bottom of the frame;

[0010] An upper pinch roller hydraulic cylinder is provided on the frame, and the upper pinch roller body is provided at the output end of the upper pinch roller hydraulic cylinder and realizes vertical lifting;

[0011] A locking mechanism for hydraulically locking the position of the lower pinch roller body;

[0012] Guide device, including:

[0013] A front guide plate hydraulic cylinder is provided on the frame;

[0014] The pinch roller front guide plate body is arranged at the output end of the front guide plate hydraulic cylinder;

[0015] A valve guide plate hydraulic cylinder is provided on the frame;

[0016] The valve guide plate body is arranged at the output end of the valve guide plate hydraulic cylinder;

[0017] Water cutting device, installed at the outlet end of the pinch roller system;

[0018] Grinding system, including:

[0019] A hydraulic cylinder of a grinding device is arranged on the frame;

[0020] A balancing hydraulic cylinder is provided at the output end of the hydraulic cylinder of the grinding device;

[0021] The upper grinding device is arranged at the output end of the balancing hydraulic cylinder.

[0022] Preferably, the roller surface of the upper pinch roller body is covered with an upper pinch roller clamping plate, and the upper pinch roller clamping plate adopts a wear-resistant lining plate.

[0023] Preferably, a pressure sensor and a displacement sensor are fixedly connected to the upper pinch roller hydraulic cylinder, and both the pressure sensor and the displacement sensor are connected to the PLC.

[0024] Preferably, the front guide plate body of the pinch roller and the valve guide plate body are both controlled collaboratively by PLC, the front guide plate hydraulic cylinder is used to adjust the opening degree of the front guide plate and guide the plate strip to the center, and the valve guide plate hydraulic cylinder is used to drive the valve guide plate to correct deviation and reduce edge wear.

[0025] Preferably, the water cutting device includes an upper pinch roller water cutting device and an upper pinch roller water cutting plate body arranged on the frame. The upper pinch roller water cutting device and the upper pinch roller water cutting plate body respectively rotate synchronously with the pinch roller system to drain water, thereby reducing cooling water residue.

[0026] Preferably, the balancing hydraulic cylinder provides constant pressure for the upper grinding device.

[0027] Preferably, the hydraulic cylinder of the grinding device drives the upper grinding device to perform local operations only on the defective area of ​​the plate strip.

[0028] Preferably, the upright column and the crossbeam of the frame are formed by integral welding, the pinch roller system is changed from a traditional swing arm structure to an arch structure, and the upper pinch roller body and the lower pinch roller body are installed on the crossbeam.

[0029] Preferably, the locking mechanism comprises a lower pinch roller locking cylinder provided on the frame, and the lower pinch roller locking cylinder locks the lower pinch roller body at a preset position of the frame through hydraulic pressure.

[0030] Preferably, the PLC regulates the upper pinch roller hydraulic cylinder in real time according to the data from the pressure sensor and the displacement sensor and controls the fluctuation range of the clamping force within ±5%.

[0031] The present invention discloses a novel pinch roller for a coiler, which has the following beneficial effects:

[0032] 1. The new coiler's pinch rollers feature a tassel-style design. A hydraulic cylinder drives the upper pinch roller body vertically upward and downward, working in conjunction with the fixed lower pinch roller body to achieve precise pinching of the strip. The hydraulic cylinder's highly stable telescopic motion effectively prevents uneven clamping force caused by structural swing during high-speed rolling. This ensures stable strip tension during coiling, significantly improving coiling quality and resolving the issue of insufficient control precision associated with conventional swing-arm pinch rollers at high speeds.

[0033] 2. The new coiler's pinch rollers, thanks to their stable arch-like structure and precise hydraulic control, ensure uniform force on the strip during the coiling process, eliminating defects such as uneven coil shape and edge warping caused by the swinging pinch rollers. Furthermore, the front guide and valve guide in the guide mechanism, coordinated under PLC control, guide the strip to the center of the conveyor and correct deviations in real time, further ensuring the regularity of the strip's coil shape. This effectively improves the product's appearance quality and dimensional accuracy, overcoming the flaws of traditional swing-arm pinch rollers that can easily lead to poor strip coil shape.

[0034] 3. The new coiler's pinch roller frame utilizes an integrally welded column and crossbeam, resulting in a simple structure and excellent rigidity. This significantly reduces potential failure points compared to the complex linkage mechanisms of traditional swing-arm systems. Furthermore, components such as the hydraulic cylinder and locking mechanism utilize proven and reliable hydraulic technology, simplifying maintenance and overhaul. The hydraulic locking system is convenient to operate, reducing maintenance associated with complex mechanical structures, lowering equipment downtime and maintenance costs. This offers significant economic advantages compared to the complex maintenance requirements of traditional swing-arm pinch rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 This is a front view of the overall structure of the present invention;

[0037] Figure 2 It is a side view of the overall structure of the present invention;

[0038] Figure 3 It is a cross-sectional view of the overall structure of the present invention.

[0039] In the figure: 1. Frame; 2. Lower pinch roller body; 3. Upper pinch roller body; 4. Upper pinch roller hydraulic cylinder; 5. Upper grinding device; 6. Grinding device hydraulic cylinder; 7. Balance hydraulic cylinder; 8. Valve guide plate body; 9. Upper pinch roller clamping plate; 10. Upper pinch roller water cutting device; 11. Front guide plate hydraulic cylinder; 12. Lower pinch roller locking cylinder; 13. Upper pinch roller water cutting plate body; 14. Valve guide plate hydraulic cylinder; 15. Pinch roller front guide plate body. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] The embodiment of the present application solves the problem that traditional pinch rollers mostly adopt a swing arm structure by providing a new type of pinch roller for the coiler. Although it can meet the basic coiling requirements, in the high-precision production scenario of high-speed rolling, first of all, the control accuracy of the swing arm structure is insufficient. During high-speed rolling, the swing arm is easy to swing, resulting in extremely unstable and uneven clamping force of the pinch roller on the plate and strip, which seriously affects the coiling quality and makes it difficult to ensure the product qualification rate. Secondly, it is difficult to ideally control the coil shape of the plate and strip. Due to the swinging of the pinch roller, the coil shape of the plate and strip is not neat and the edges are prone to warping, which not only affects the appearance, but also increases the defective rate and brings trouble to subsequent processing. Furthermore, the swing arm structure is complex and difficult to maintain and repair. Once a fault occurs, it is difficult to troubleshoot and the repair time is long. The equipment downtime is greatly extended and the maintenance cost is high.

[0042] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0043] Example 1: The embodiment of the present invention discloses a new type of coiler pinch roller, according to the attached Figure 1-3 As shown, it includes a frame 1, a pinch roller system, an upper pinch roller hydraulic cylinder 4, a locking mechanism, a guide device, a water cutting device and a grinding system;

[0044] Frame 1 is the basic support part of the entire device. It is composed of columns and beams welded together. Frame 1 has a rigid integrated welded structure that withstands and transmits the forces generated by various components, ensuring the strength and stability of the entire coiler pinch roller during operation and preventing other components from malfunctioning due to structural deformation.

[0045] The upper pinch roller hydraulic cylinder 4 is arranged on the frame 1, and the upper pinch roller body 3 is arranged at the output end of the upper pinch roller hydraulic cylinder 4 and realizes vertical lifting.

[0046] The pinch roller system consists of an upper pinch roller body 3 and a lower pinch roller body 2 arranged in parallel. The lower pinch roller body 2 is fixed to the bottom of the frame 1, and the upper pinch roller body 3 is located at the output end of the upper pinch roller hydraulic cylinder 4, which can achieve vertical lifting. The upper pinch roller body 3 is driven up and down by the extension and contraction of the upper pinch roller hydraulic cylinder 4. In conjunction with the fixed lower pinch roller body 2, it pinches the strip, achieving functions such as conveying the strip and controlling its tension.

[0047] The roller surface of the upper pinch roller body 3 is covered with the upper pinch roller clamping plate 9. The upper pinch roller clamping plate 9 adopts a wear-resistant lining, which can effectively enhance the clamping ability of different types of plates and strips, reduce roller surface wear, and increase service life. In addition, the upper pinch roller body 3 is driven vertically by the hydraulic cylinder to adjust the distance between the pinch rollers according to parameters such as the thickness of the plate and strip, so as to achieve precise pinching of plates and strips of different specifications and ensure the stability and quality of plate and strip transportation.

[0048] The pinch roller system is changed from a traditional swing arm structure to an arch structure, and the upper pinch roller body 3 and the lower pinch roller body 2 are installed on the crossbeam.

[0049] The locking mechanism includes a lower pinch roller locking cylinder 12 mounted on the frame 1 and connected to the lower pinch roller body 2. Using hydraulic pressure, the lower pinch roller locking cylinder 12 locks the lower pinch roller body 2 in a preset position on the frame 1, ensuring its positional stability during operation. This hydraulic locking mechanism securely secures the lower pinch roller body 2, preventing it from shifting due to external forces and other factors. This ensures the pinch roller system's stable handling of the strip, improving product quality. Furthermore, hydraulic locking is simple and quick to operate, making it easily integrated with automated control systems.

[0050] The guide device consists of a front guide plate hydraulic cylinder 11, a pinch roller front guide plate body 15, a valve guide plate hydraulic cylinder 14, and a valve guide plate body 8. Both the front guide plate hydraulic cylinder 11 and the valve guide plate hydraulic cylinder 14 are mounted on the frame 1. The output end of the front guide plate hydraulic cylinder 11 is connected to the pinch roller front guide plate body 15, while the output end of the valve guide plate hydraulic cylinder 14 is connected to the valve guide plate body 8. Both are controlled collaboratively by a PLC.

[0051] The front guide hydraulic cylinder 11 drives the pinch roller front guide body 15 to adjust the front guide opening and guide the strip to the center of the conveyor. The valve guide hydraulic cylinder 14 drives the valve guide body 8 to correct the strip from straying and reduce edge wear. The guide mechanism uses a PLC to coordinate control of the independent hydraulic cylinders of the front guide and valve guide, achieving precise guidance and correction of the strip during conveying, effectively reducing strip edge wear and improving yield. The hydraulically driven guide mechanism offers flexible adjustment and fast response, adapting to strips of different specifications and materials, enhancing the versatility and reliability of the equipment.

[0052] The water removal device is installed at the outlet of the pinch roller system and includes an upper pinch roller water removal device 10 and an upper pinch roller water removal plate body 13, which are arranged on the frame 1. The upper pinch roller water removal device 10 and the upper pinch roller water removal plate body 13 rotate synchronously with the pinch roller system to drain water, effectively removing residual cooling water from the surface of the strip.

[0053] The water cutting device uses a synchronous rotating drainage design to promptly and efficiently remove cooling water from the surface of the plate and strip, reduce residual water stains, improve the surface quality of the plate and strip, and provide a good foundation for subsequent processing steps. It is also beneficial to the cleaning and maintenance of the equipment and reduces problems such as equipment corrosion caused by residual water.

[0054] The grinding system includes a grinding device hydraulic cylinder 6, a balancing hydraulic cylinder 7, and an upper grinding device 5. The grinding device hydraulic cylinder 6 is mounted on the frame 1. Its output is connected to the balancing hydraulic cylinder 7, which also has the upper grinding device 5 mounted on its output. The grinding device hydraulic cylinder 6 drives the upper grinding device 5 to the defective area of ​​the strip. The balancing hydraulic cylinder 7 provides constant pressure to the upper grinding device 5, enabling it to perform localized grinding of the defective area.

[0055] The grinding system is driven by a hydraulic cylinder and the balance hydraulic cylinder 7 provides constant pressure, which can accurately perform local operations on defective areas of the plate and strip, thereby improving the grinding efficiency and avoiding excessive grinding of normal areas, thereby extending the service life of the plate and strip. Moreover, the hydraulically driven grinding device has good stability and can ensure the consistency of the grinding quality.

[0056] When using the device, the operating steps are as follows:

[0057] First, according to the specifications and process requirements of the plate strip, the distance between the upper pinch roller body 3 and the lower pinch roller body 2 is adjusted by the upper pinch roller hydraulic cylinder 4 to put the pinch roller system in a suitable working state.

[0058] Then the locking mechanism is started, that is, the lower pinch roller body 2 is locked at a preset position of the frame 1 through the lower pinch roller locking cylinder 12 to ensure that the lower pinch roller body 2 is in a stable position during operation.

[0059] Before the strip is conveyed, the front guide plate hydraulic cylinder 11 in the guide device is used to adjust the opening degree of the front guide plate body 15 of the pinch roller to prepare for the centered conveying of the strip. At the same time, the valve guide plate hydraulic cylinder 14 drives the valve guide plate body 8 to the initial working position, ready to correct the deviation of the strip at any time.

[0060] When the strip begins to be conveyed, the pinch roller system is driven by the hydraulic cylinder to pinch and convey the strip. At this time, the water cutting device rotates synchronously to drain water, removing the cooling water residue on the surface of the strip to ensure the cleanliness of the strip during conveying.

[0061] If a defective area of ​​the plate is detected, the grinding device hydraulic cylinder 6 drives the upper grinding device 5 to move to the area, and the balancing hydraulic cylinder 7 provides it with constant pressure to start local grinding of the defective area until the defect is repaired or meets the process requirements.

[0062] During the entire working process, the pressure sensors and displacement sensors on each hydraulic cylinder monitor data in real time and transmit signals to the PLC. Based on this data, the PLC automatically adjusts the operation of components such as the upper pinch roller hydraulic cylinder 4, so that parameters such as clamping force fluctuation are controlled within the specified range, ensuring stable and efficient operation of the entire device.

[0063] In summary, the new coiler pinch roller has the following advantages:

[0064] First, significantly improve control accuracy

[0065] This invention abandons the traditional swing-arm structure and adopts a memorial arch design. The upper pinch roller body 3 is driven vertically by an upper pinch roller hydraulic cylinder 4, working in conjunction with the fixed lower pinch roller body 2 to achieve precise pinching of the strip. The hydraulic cylinder's highly stable telescopic motion effectively prevents uneven clamping force caused by structural swing during high-speed rolling, ensuring stable strip tension during coiling and significantly improving coiling quality. This solves the problem of insufficient control precision of traditional swing-arm pinch rollers during high-speed production.

[0066] Second, optimize the coil quality of the plate and strip

[0067] Thanks to its stable arch-shaped structure and precise hydraulic control, the strip is evenly stressed during the coiling process, eliminating defects such as uneven coil shape and edge warping caused by the swinging pinch rollers. Furthermore, the front guide and valve guide in the guide mechanism, coordinated under PLC control, guide the strip to the center of the conveyor and correct deviations in real time, further ensuring the regularity of the strip coil shape, effectively improving the product's appearance quality and dimensional accuracy, and overcoming the defects of traditional swing-arm pinch rollers that can easily lead to poor strip coil shape.

[0068] Third, reduce equipment maintenance costs

[0069] The frame 1 of the present invention utilizes integrally welded columns and crossbeams, resulting in a simple structure and excellent rigidity. Compared to the complex linkage mechanisms of conventional swing-arm systems, this significantly reduces potential failure points. Furthermore, components such as the hydraulic cylinder and locking mechanism utilize proven and reliable hydraulic technology, simplifying maintenance and overhaul. The hydraulic locking method offers convenient operation, reducing maintenance difficulties associated with complex mechanical structures, lowering equipment downtime and maintenance costs. This offers significant economic advantages compared to the complex maintenance requirements of conventional swing-arm pinch rollers.

[0070] Example 2: The embodiment of the present invention discloses a new type of coiler pinch roller, according to the attached Figure 1-3 As shown, it includes a frame 1, a pinch roller system, an upper pinch roller hydraulic cylinder 4, a locking mechanism, a guide device, a water cutting device and a grinding system;

[0071] The frame 1 is composed of columns and beams; the columns and beams are welded together with Q460D high-strength steel plates, and the welds are tested by ultrasonic testing;

[0072] The pinch roller system comprises an upper pinch roller body 3 and a lower pinch roller body 2 arranged in parallel, and the lower pinch roller body 2 is fixed to the bottom of the frame 1;

[0073] The upper pinch roller hydraulic cylinder 4 is arranged on the frame 1, and the upper pinch roller body 3 is arranged at the output end of the upper pinch roller hydraulic cylinder 4 and realizes vertical lifting;

[0074] The locking mechanism is used to hydraulically lock the position of the lower pinch roller body 2;

[0075] The guide device includes:

[0076] The front guide plate hydraulic cylinder 11 is provided on the frame 1;

[0077] The pinch roller front guide plate body 15 is provided at the output end of the front guide plate hydraulic cylinder 11;

[0078] The valve guide plate hydraulic cylinder 14 is provided on the frame 1;

[0079] The valve guide plate body 8 is arranged at the output end of the valve guide plate hydraulic cylinder 14;

[0080] The water cutting device is installed at the outlet end of the pinch roller system;

[0081] The grinding system includes:

[0082] The hydraulic cylinder 6 of the grinding device is arranged on the frame 1;

[0083] The balancing hydraulic cylinder 7 is provided at the output end of the grinding device hydraulic cylinder 6;

[0084] The upper grinding device 5 is arranged at the output end of the balancing hydraulic cylinder 7.

[0085] The upper pinch roller hydraulic cylinder 4 is fixedly connected to a pressure sensor and a displacement sensor, both of which are connected to a PLC. The PLC controls the upper pinch roller hydraulic cylinder 4 in real time based on the data from the pressure sensor and displacement sensor, keeping the clamping force fluctuation range within ±5%.

[0086] The PLC controls the upper pinch roller hydraulic cylinder 4 in real time to manage clamping force fluctuations. This primarily relies on sensor data collection. A pressure sensor, installed within the hydraulic cylinder, sensitively senses the pressure within the cylinder or acting on the strip, converting it into an electrical signal. A displacement sensor monitors the displacement of the hydraulic cylinder piston, also converting it into an electrical signal. These analog signals are amplified and filtered by the signal conditioning module before being converted to digital signals by an analog-to-digital converter and transmitted to the PLC. The PLC processes this data according to a pre-set procedure, comparing the current pressure and displacement values ​​with the target values ​​and calculating the deviation, which provides a basis for subsequent control decisions.

[0087] Based on the calculated deviation, the PLC uses the PID control algorithm to make decisions. Proportional control adjusts output based on the deviation, ensuring rapid response. Integral control eliminates steady-state errors and ensures long-term accuracy. Differential control adjusts in advance based on the rate of change of the deviation, improving response speed and stability. The PLC uses this algorithm to generate appropriate control signals and transmits them to the hydraulic system control valves, which adjust the hydraulic oil flow and pressure accordingly, thereby controlling the speed and force of the hydraulic cylinder's extension and retraction. Simultaneously, sensors continuously provide feedback, forming a closed-loop control loop that enables the PLC to make real-time adjustments, precisely controlling the clamping force fluctuation within ±5%.

[0088] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0089] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of coiler pinch roller, characterized in that: include: A frame (1) is composed of columns and beams; A pinch roller system comprises an upper pinch roller body (3) and a lower pinch roller body (2) arranged in parallel, wherein the lower pinch roller body (2) is fixed on a frame (1); An upper pinch roller hydraulic cylinder (4) is arranged on the frame (1), and the upper pinch roller body (3) is arranged at the output end of the upper pinch roller hydraulic cylinder (4) and realizes vertical lifting; A locking mechanism for hydraulically locking the position of the lower pinch roller body (2); Guide device, including: A front guide plate hydraulic cylinder (11) is arranged on the frame (1); A pinch roller front guide plate body (15) is arranged at the output end of the front guide plate hydraulic cylinder (11); A valve guide plate hydraulic cylinder (14) is arranged on the frame (1); A valve guide plate body (8) is arranged at the output end of the valve guide plate hydraulic cylinder (14); Water cutting device, installed at the outlet end of the pinch roller system; Grinding system, including: A grinding device hydraulic cylinder (6) is arranged on the frame (1); A balancing hydraulic cylinder (7) is provided at the output end of the grinding device hydraulic cylinder (6); The upper grinding device (5) is arranged at the output end of the balancing hydraulic cylinder (7).

2. A novel pinch roller for a coiler according to claim 1, characterized in that: The roller surface of the upper pinch roller body (3) is covered with an upper pinch roller clamping plate (9), and the upper pinch roller clamping plate (9) adopts a wear-resistant lining plate.

3. The novel pinch roller of the coiler according to claim 1 is characterized in that: A pressure sensor and a displacement sensor are fixedly connected to the upper pinch roller hydraulic cylinder (4), and both the pressure sensor and the displacement sensor are connected to the PLC.

4. A novel pinch roller for a coiler according to claim 3, characterized in that: The pinch roller front guide plate body (15) and the valve guide plate body (8) are both controlled in coordination by PLC; the front guide plate hydraulic cylinder (11) is used to adjust the opening degree of the front guide plate and guide the plate strip to the center; the valve guide plate hydraulic cylinder (14) is used to drive the valve guide plate to correct deviation and reduce edge wear.

5. The novel pinch roller of the coiler according to claim 1, characterized in that: The water cutting device comprises an upper pinch roller water cutting device (10) and an upper pinch roller water cutting plate body (13) arranged on a frame (1); the upper pinch roller water cutting device (10) and the upper pinch roller water cutting plate body (13) respectively rotate synchronously with the pinch roller system to drain water, thereby reducing residual cooling water.

6. The novel pinch roller of the coiler according to claim 1, characterized in that: The balancing hydraulic cylinder (7) provides constant pressure for the upper grinding device (5).

7. The novel pinch roller of the coiler according to claim 1, characterized in that: The grinding device hydraulic cylinder (6) drives the upper grinding device (5) to perform local operation only on the defective area of ​​the plate strip.

8. The novel pinch roller of the coiler according to claim 1, characterized in that: The upright column and the crossbeam of the frame (1) are integrally welded, the pinch roller system is changed from a traditional swing arm structure to an arch structure, and the upper pinch roller body (3) and the lower pinch roller body (2) are mounted on the crossbeam.

9. The novel pinch roller of the coiler according to claim 4, characterized in that: The locking mechanism comprises a lower pinch roller locking cylinder (12) arranged on the frame (1), and the lower pinch roller locking cylinder (12) locks the lower pinch roller body (2) at a preset position of the frame (1) through hydraulic pressure.

10. The novel pinch roller of the coiler according to claim 1, characterized in that: The PLC regulates the upper pinch roller hydraulic cylinder (4) in real time according to data from the pressure sensor and the displacement sensor, and controls the fluctuation range of the clamping force within ±5%.

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