A sheet leveling machine with a roll stress balance function

Abstract

The present invention discloses a sheet flattening machine with a roll stress balancing function, which relates to the technical field of sheet flattening. It includes a bracket, an electric heating plate, and a driving telescopic rod. A number of driving telescopic rods are installed inside the bracket. An electric heating plate is installed on one side of the bracket. A slider is arranged on one side of the electric heating plate. Main springs are installed at the upper and lower ends of the slider. A fork arm is arranged at one end of the main spring. A pressure roll is installed in the middle of the fork arm. A sheet is installed between the pressure rolls. In the present invention, the pressure rolls repeatedly press the sheet through the cooperation between the slider and the limiting component. Among them, the electric heating plate heats the sheet, reducing the pressing difficulty of the pressure rolls on the sheet, thereby reducing the damage suffered by the pressure rolls during pressing. Among them, the driving component cooperates with the pressure rolls to realize the automatic feeding of the sheet, improving the automation degree of the device. Secondly, the targeted heat dissipation of the heat dissipation component maintains the surface strength of the pressure rolls during pressing, improving the surface quality of the sheet after pressing.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet flattening, and specifically to a sheet flattening machine with a roll stress balance function. Background Art

[0002] The flattening device is called a flattening machine, which is applicable to strip flattening machines and cold rolling skin pass mills. The strip after recrystallization annealing and galvanizing often needs to be flattened to endow the strip with necessary properties and surface quality to meet the requirements of subsequent process machining. For the flattening machine on a continuous hot-dip galvanizing line, the essence of flattening is a rolling deformation with a small reduction. The purpose of the flattening machine is to eliminate the flatness defects of the strip after hot rolling or cold rolling.

[0003] Most of the existing flattening machines are multi-roll flattening machines, which achieve sheet flattening by using multiple roll pressing technologies. However, the sheets mostly enter from one side. After long-term use of the multi-roll flattening machine, the pressing rolls near the entry side bear most of the flattening work. During the flattening work of the pressing rolls, the pressing rolls are mostly stressed in a single area, resulting in deformation of the pressing rolls after use, affecting the pressing effect of the sheet surface. At the same time, the replacement cycle of the pressing rolls is short, leading to an increase in production costs. Secondly, the labor cost required for replacement also increases synchronously. Summary of the Invention

[0004] The purpose of the present invention is to provide a sheet flattening machine with a roll stress balance function to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A sheet leveling machine with a roll stress balance function, comprising a bracket, an electric heating plate and a driving telescopic rod. A number of driving telescopic rods are installed inside the bracket. An electric heating plate is installed on one side of the bracket. A slider is arranged on one side of the electric heating plate. The slider is movably connected to the bracket through the driving telescopic rod. Main springs are installed at the upper and lower ends of the slider. A fork arm is arranged at one end of the main spring. A pressing roll is installed in the middle of the fork arm. A sheet is installed between the pressing rolls. A limiting component is installed on the side of the pressing roll away from the fork arm. The limiting component is used to control the rotation of the pressing roll. A driving component is arranged on the outer wall of the pressing roll. The driving component is used to control the sliding of the sheet. A heat dissipation component is arranged inside the pressing roll. The heat dissipation component is used to accelerate the heat loss inside the pressing roll. The slider drives the pressing roll to make reciprocating horizontal sliding under the action of the driving telescopic rod. Among them, the driving telescopic rod can be replaced with other reciprocating driving structures; the main spring and the fork arm cooperate with each other to make the toothed plates on both sides of the pressing roll fit with the limiting component. When the toothed plates and the limiting component are engaged in motion, the slider drives the pressing roll to roll along the surface of the sheet, thereby realizing the pressing of the sheet by the pressing roll. Before the leveling machine is used, the linear distance between the limiting components is changed through the driving telescopic rod, thereby changing the thickness of the pressed sheet. The pressed thickness is equal to the gap between the adjusted pressing rolls. The pressing roll only processes the area where the thickness of the sheet is greater than the gap, thereby making the thickness of each part of the pressed sheet the same and avoiding the situation of over-pressing of the sheet.

[0006] Further, toothed plates are arranged on both sides of the pressing roll. The toothed plate includes an equal-width plate, a tapered plate and a flat plate. A main shaft is arranged on one side of the equal-width plate. The equal-width plate, the tapered plate and the flat plate are circumferentially distributed about the main shaft. The equal-width plate is connected to the limiting component. The main shaft is connected to the fork arm. A pipeline is arranged in the middle of the main shaft. The main shaft is movably connected to the pipeline. The pipeline is connected to the heat dissipation component.

[0007] Further, the limiting component includes a limiting plate installed on one side of the equal-width plate. A meshing plate is arranged on one side of the limiting plate. The limiting plate is meshed and connected with the equal-width plate and the tapered plate through the meshing plate. The length of the meshing plate is less than the length of the limiting plate. Driving telescopic rods are arranged at both ends of the limiting plate. The limiting plate forms a lifting structure relative to the bracket through the driving telescopic rod. The sum of the outer wall circumferences of the equal-width plate and the tapered plate is equal to the length of the meshing plate. After the equal-width plate and the tapered plate are respectively meshed, the pressing roll is connected to the limiting component through the flat plate. The limiting component does not have driving power for the flat plate. Under the push of the main spring, the pressing roll starts to slide horizontally at this time, but the pressing roll cannot roll on the outer wall of the sheet. At this time, the pressing roll is connected to the sheet through the driving component.

[0008] Further, the driving assembly includes a groove formed on the outer wall of the pressure roller. A clamping groove is arranged inside the groove, and an eccentric plate is arranged inside the clamping groove. The eccentric plate is movably connected to the clamping groove through a spring shaft. The clamping groove limits the angular deflection range of the eccentric plate. After the slider moves to the upper limit driven by the driving telescopic rod, the slider retracts driven by the driving telescopic rod, and the slider drives the pressure roller to retract synchronously. At this time, the pressure roller is connected to the plate through the driving assembly. The eccentric plate fits against the plate under the action of the spring shaft. The eccentric plate slides relative to the plate driven by the slider, and the frictional force generated between the eccentric plate and the plate causes the eccentric plate to deflect around the spring shaft. Since the distances between different parts of the outer wall of the eccentric plate and the spring shaft are different, as the eccentric plate deflects, the pressure of the outer wall of the eccentric plate on the plate gradually increases, thereby achieving relative rest between the eccentric plate and the plate. The plate moves synchronously with the pressure roller under the action of the slider until a section where the asymptotic plate is connected to the flat plate contacts the meshing plate again, causing the pressure roller to start rotating and rolling. Subsequently, the pressure of the eccentric plate on the plate disappears, and the pressure roller rolls relative to the plate again.

[0009] Further, the heat dissipation assembly includes a partition installed on one side of the pipeline. The partition is located inside the pressure roller. An arc-shaped plate is arranged on one side of the partition, a grid is arranged on one side of the arc-shaped plate, and a heat dissipation plate is installed on the inner wall of the grid. The pipelines on both sides of the pressure roller are respectively a water inlet and a water outlet. The cavity inside the pressure roller is separated into two spaces by the partition. The space close to the plate is the water inlet space, and the other space is the water outlet space. The angle between the pipeline and the slider does not deflect as the pressure roller rolls, and the pipeline, the partition, and the slider are relatively fixed. The opening of the partition faces the plate. The water inlet space is communicated with the water outlet space. The water flow moves in the gap formed among the partition, the arc-shaped plate, and the pressure roller, enters the water inlet space through the gap from the water inlet pipe, and finally leaves the pressure roller through the water outlet space and the water outlet pipe.

[0010] Further, bumps are provided on the outer wall of the electric heating plate. The length of the bumps is greater than the length of the electric heating plate. The electric heating plate is of an arc structure. The electric heating plate is movably connected to the bracket. The deflection center of the electric heating plate is located on one side of the arc structure. The electric heating plate heats the plate, performs heat treatment on the plate, and at the same time weakens the strength required for plate pressing, facilitating the pressing of the plate by the pressing roller. During the pressing of the plate by the pressing roller, the pressing roller has a driving force to push the plate in the horizontal movement state, and the pushing direction is the same as the movement direction of the pressing roller. The plate moves toward the side close to the electric heating plate under the action of the pressing roller. Bumps are provided between the electric heating plates. The electric heating plate makes the bumps fit with the plate under the action of the spring shaft. During the movement of the plate, the electric heating plate is driven by the bumps to deflect around the spring shaft. Since the electric heating plate is an eccentric structure, the pressure of the electric heating plate on the plate continuously increases during the deflection. Due to the factor of the plate thickness, the electric heating plate is prevented from continuing to deflect, and the electric heating plate cannot continue to deflect, resulting in the plate being unable to continue sliding relative to the bumps. The electric heating plate and the plate restrict each other, realizing that during the pressing of the pressing roller, the plate is in a static state under the restriction of the electric heating plate.

[0011] Further, the equal-width plate is of a circular arc structure, and the center of the equal-width plate coincides with the center of the pressing roller. The asymptotic plate is of a spiral line segment structure. One end of the spiral line segment is connected to the equal-width plate. The end of the spiral line segment connected to the equal-width plate is farther from the center of the pressing roller. The other end of the spiral line segment is connected to the flat plate. The end of the spiral line segment connected to the flat plate is closer to the center of the pressing roller. The connection line between the center of the pressing roller and the midpoint of the flat plate is perpendicular to the flat plate. One side surface of the flat plate is a smooth plane. Since the center of the equal-width plate coincides with the center of the pressing roller, during the meshing of the meshing plate and the equal-width plate, the vertical cross-section of the plate after being pressed by the pressing roller is rectangular, and the thickness of each part of the pressed plate is the same. Among them, the asymptotic plate is a spiral asymptotic line segment. The connection line formed between the center of the pressing roller and the contact point between the pressing roller and the plate intersects with the spiral asymptotic line segment, and the distance between the intersection point and the center of the pressing roller decreases in an arithmetic progression as the pressing roller rolls. During the meshing of the meshing plate and the asymptotic plate, the vertical cross-section of the plate after being pressed by the pressing roller is trapezoidal, and the thin end of the trapezoidal plate is close to the rectangular plate. After the meshing of the meshing plate and the asymptotic plate is completed, it is connected to the flat plate. The centers of the driving assembly and the pressing roller are respectively located on both upper limits of the flat plate. At this time, the slider continues to move a certain distance toward the side where the electric heating plate is located under the drive of the driving expansion rod. Since the side of the flat plate connected to the limiting plate is a smooth plane, the pressing roller only slides horizontally under the drive of the slider and does not have the power to roll, facilitating the feeding of the plate by a certain distance by the driving assembly during the recovery of the slider.

[0012] Further, the inside of the pressure roller is a cylindrical cavity. The partition divides the cavity into upper and lower space parts. The pipeline includes a water inlet pipe and a water outlet pipe. The water inlet pipe is located inside the space on the side of the partition close to the plate. The water outlet pipe is connected to the space on the side away from the plate. The radius of the arc-shaped plate is smaller than the inner wall radius of the pressure roller. A notch is provided in the middle of the partition. The upper and lower spaces are connected through the notch. The gap between the arc-shaped plate and the pressure roller is small. Under the condition of stable water flow, the flow velocity is greater in the place with a small gap. At the same time, the contact area between the water and the pressure roller remains unchanged, thereby increasing the heat dissipation efficiency between the arc-shaped plate and the pressure roller. The orientation of the arc-shaped plate is the side where the pressure roller does work on the plate, avoiding the heat of the plate in the high-temperature state from being conducted to the pressure roller, resulting in an increase in the outer wall temperature of the pressure roller, and then reducing the hardness of the outer wall of the pressure roller, making the outer surface of the plate processed by the pressure roller uneven; the partition is provided to separate the water inlet space and the water outlet space. Due to the high thickness of the partition, the heat exchange efficiency between the water flows in the water inlet space and the water outlet space during movement is weak. The water flow in the water inlet space mainly cools the pressure roller; secondly, the setting of the grid and the heat dissipation plate increases the cross-sectional area inside the water outlet space and prolongs the time of the water in the water outlet space, thereby increasing the heat absorbed by the water from the residual heat on the pressure roller.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0014] 1. For the plate flattening machine with a roll stress balance function, through the setting of the pressure roller and the limiting component, the slider and the limiting component control the movement of the pressure roller, realizing a pressing method that combines reciprocating and rolling methods. The pressure roller repeatedly presses the same area on the plate, and the gap distance of the next pressing decreases until the pressure roller presses the plate to the required thickness, improving the error tolerance rate of the pressure roller during pressing. During the repeated pressing of the plate by the pressure roller, at the same time, through the feeding pressing method of the pressure roller, the stress inside the plate is gradually released. The combined pressing method makes the protruding area of each plate contact different areas of the outer wall of the pressure roller each time, thereby sharing the stress area to each area of the pressure roller, reducing the probability of deformation of some areas of the pressure roller during pressing, and maximizing the reduction of the processing difficulty of the pressure roller on the plate through the separate pressing method, thereby improving the pressing effect of the pressure roller, avoiding relatively large losses suffered by the pressure roller during pressing the protruding area of the plate, resulting in uneven surface of the pressed plate. The separate pressing method prolongs the service life of the pressure roller and reduces the processing cost of the plate;

[0015] 2. The sheet leveling machine with a roll stress balance function realizes the short-distance feeding of the sheet through the setting of the driving component. The driving component cooperates with the slider and the pressure roll to achieve the feeding of the sheet, and the feeding length of the sheet is less than the rolling distance of the pressure roll driven by the equal-width plate cooperating with the limiting component. This enables the pressure roll to achieve the feeding effect of the sheet during pressing without installing other feeding structures, and the driving component cooperates with the state of the pressure roll to further achieve the feeding effect of the sheet, improving the cooperation between the internal structures of the device and the automation degree of the device.

[0016] 3. The sheet leveling machine with a roll stress balance function realizes the acceleration of water flow in some areas by changing the cross-sectional area of water flow through the arc-shaped plate through the setting of the heat dissipation component, thereby accelerating the heat loss in this area. Through the connection method between the pipeline and the slider, it is realized that the accelerated heat dissipation area is located at the connection between the pressure roll and the sheet, making the heat dissipation component have regional targeting. The water is in the lowest temperature state before entering the heat dissipation area, so that the water contacts the area with the highest temperature of the pressure roll during the time period with the lowest temperature, further enhancing the heat dissipation effect of the heat dissipation component, accelerating the heat loss inside the pressure roll, and avoiding the reduction of the hardness of the outer wall of the pressure roll due to too high temperature of the pressure roll, which affects the subsequent pressing effect of the pressure roll on the sheet and the surface quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0018] Figure 1 is the front view full-section structure schematic diagram of the present invention;

[0019] Figure 2 is the front view structure schematic diagram of the bracket of the present invention;

[0020] Figure 3 is the top view full-section structure schematic diagram of the present invention;

[0021] Figure 4 is the Figure 3 magnified structure schematic diagram at A in the present invention;

[0022] Figure 5 is the right side view structure schematic diagram of the present invention;

[0023] Figure 6 is the Figure 5 magnified structure schematic diagram at B in the present invention;

[0024] Figure 7 is the front view structure schematic diagram of the pressure roll of the present invention;

[0025] Figure 8 is theFigure 7 Schematic enlarged structure diagram at position C;

[0026] Figure 9 It is a schematic front full-section structure diagram of the pressure roller of the present invention;

[0027] Figure 10 It is a schematic front full-section structure diagram of the electric heating plate of the present invention;

[0028] Figure 11 It is a schematic front structure diagram of the limiting component of the present invention.

[0029] In the figure: 1. Slide block; 2. Electric heating plate; 201. Protrusion; 3. Main spring; 4. Fork arm; 5. Pressure roller; 501. Tooth plate; 5011. Equal-width plate; 5012. Asymptotic plate; 5013. Flat plate; 502. Main shaft; 503. Pipe; 6. Limiting component; 601. Limiting plate; 602. Engaging plate; 7. Driving component; 701. Groove; 702. Card slot; 703. Eccentric plate; 8. Heat dissipation component; 801. Partition plate; 802. Arc plate; 803. Grid; 804. Heat dissipation plate. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1-11 , the present invention provides a technical solution: a sheet flattening machine with a roll stress balance function, including a bracket, an electric heating plate 2 and a driving telescopic rod. A number of driving telescopic rods are installed inside the bracket, an electric heating plate 2 is installed on one side of the bracket, a slide block 1 is arranged on one side of the electric heating plate 2, the slide block 1 is movably connected to the bracket through the driving telescopic rod, main springs 3 are installed at the upper and lower ends of the slide block 1, a fork arm 4 is arranged at one end of the main spring 3, a pressure roller 5 is installed in the middle of the fork arm 4, a sheet is installed between the pressure rollers 5, a limiting component 6 is installed on the side of the pressure roller 5 away from the fork arm 4, the limiting component 6 is used to control the rotation of the pressure roller 5, a driving component 7 is arranged on the outer wall of the pressure roller 5, the driving component 7 is used to control the sliding of the sheet, and a heat dissipation component 8 is arranged inside the pressure roller 5, and the heat dissipation component 8 is used to accelerate the heat loss inside the pressure roller 5;

[0032] On both sides of the pressing roller 5, there are tooth plates 501. The tooth plate 501 includes an equal-width plate 5011, a tapered plate 5012, and a flat plate 5013. On one side of the equal-width plate 5011, there is a main shaft 502. The equal-width plate 5011, the tapered plate 5012, and the flat plate 5013 are circumferentially distributed with respect to the main shaft 502. The equal-width plate 5011 is connected to the limiting component 6, the main shaft 502 is connected to the fork arm 4, a pipe 503 is arranged in the middle of the main shaft 502, and the main shaft 502 is movably connected to the pipe 503. The pipe 503 is connected to the heat dissipation component 8;

[0033] The limiting component 6 includes a limiting plate 601 installed on one side of the equal-width plate 5011. On one side of the limiting plate 601, there is an engaging plate 602. The limiting plate 601 is meshed and connected to the equal-width plate 5011 and the tapered plate 5012 through the engaging plate 602. The length of the engaging plate 602 is less than the length of the limiting plate 601. At both ends of the limiting plate 601, there are driving telescopic rods. The limiting plate 601 forms a lifting structure relative to the bracket through the driving telescopic rods. The slider 1 and the limiting component 6 control the movement of the pressing roller 5, realizing a pressing method that combines reciprocating and rolling methods for the pressing roller 5. The pressing roller 5 repeats pressing on the same area of the plate, and the gap distance of the next pressing decreases until the pressing roller 5 presses the plate to the required thickness, improving the error tolerance rate of the pressing roller 5 during pressing. During the repeated pressing of the plate by the pressing roller 5, at the same time, through the feeding pressing method of the pressing roller 5, the stress inside the plate is gradually released. Among them, the hybrid pressing method enables the protruding area of each plate to contact different areas on the outer wall of the pressing roller 5 each time, thereby sharing the stress-bearing area to each area on the pressing roller 5, reducing the probability of deformation of some areas of the pressing roller 5 during pressing, and through the separate pressing method, maximizing the reduction of the processing difficulty of the pressing roller 5 on the plate, thereby improving the pressing effect of the pressing roller 5, avoiding relatively large losses suffered by the pressing roller 5 during the pressing of the protruding area of the plate, resulting in uneven surfaces of the pressed plate. The separate pressing method prolongs the service life of the pressing roller 5 and reduces the processing cost of the plate;

[0034] The driving component 7 includes a groove 701 opened on the outer wall of the pressing roller 5. Inside the groove 701, there is a clamping groove 702. Inside the clamping groove 702, there is an eccentric plate 703. The eccentric plate 703 is movably connected to the clamping groove 702 through a spring shaft. The clamping groove 702 limits the angular deflection range of the eccentric plate 703. The driving component 7 cooperates with the slider 1 and the pressing roller 5 to realize the short-distance feeding of the plate, and the feeding length of the plate is less than the rolling distance of the pressing roller 5 driven by the equal-width plate 5011 in cooperation with the limiting component 6. During the pressing of the pressing roller, it is not necessary to install other feeding structures to achieve the feeding effect of the plate during pressing, and the driving component 7 cooperates with the state of the pressing roller 5 to realize the feeding effect of the plate, improving the cooperation between the internal structures of the device and the automation degree of the device;

[0035] The heat dissipation component 8 includes a partition plate 801 installed on one side of the pipeline 503. The partition plate 801 is located inside the pressure roller 5. An arc-shaped plate 802 is provided on one side of the partition plate 801, a grid 803 is provided on one side of the arc-shaped plate 802, and a heat dissipation plate 804 is installed on the inner wall of the grid 803. By changing the cross-sectional area of the water flow through the arc-shaped plate 802, the water flow speed in some areas is accelerated, thereby accelerating the heat loss in this area. Through the connection method between the pipeline 503 and the slider 1, it is realized that the accelerated heat dissipation area is located at the connection between the pressure roller 5 and the sheet material, making the heat dissipation component 8 have regional targeting. Among them, the water is in the lowest temperature state before entering the heat dissipation area, so that the water contacts the area with the highest temperature of the pressure roller 5 during the time period with the lowest temperature, further improving the heat dissipation effect of the heat dissipation component 8, accelerating the heat loss inside the pressure roller 5, and avoiding the reduction of the hardness of the outer wall of the pressure roller 5 due to the too high temperature of the pressure roller 5, which affects the subsequent pressing effect of the pressure roller 5 on the sheet material and the surface quality of the finished product;

[0036] Convex blocks 201 are provided on the outer wall of the electric heating plate 2. The length of the convex blocks 201 is greater than the length of the electric heating plate 2. The electric heating plate 2 is of an arc-shaped structure. The electric heating plate 2 is movably connected to the bracket, and the deflection center of the electric heating plate 2 is located on one side of the arc-shaped structure;

[0037] The equal-width plate 5011 is of a circular arc structure, and the center of the equal-width plate 5011 coincides with the center of the pressure roller 5. The asymptotic plate 5012 is of a spiral line segment structure. One end of the spiral line segment is connected to the equal-width plate 5011. The end of the spiral line segment connected to the equal-width plate 5011 is farther from the center of the pressure roller 5. The other end of the spiral line segment is connected to the flat plate 5013. The end of the spiral line segment connected to the flat plate 5013 is closer to the center of the pressure roller 5. The connection line between the center of the pressure roller 5 and the midpoint of the flat plate 5013 is perpendicular to the flat plate 5013, and one side surface of the flat plate 5013 is a smooth plane;

[0038] The inside of the pressure roller 5 is a cylindrical cavity. The partition plate 801 divides the cavity into upper and lower space parts. The pipeline 503 includes a water inlet pipe and a water outlet pipe. The water inlet pipe is located inside the space on the side of the partition plate 801 close to the sheet material, and the water outlet pipe is connected to the space on the side far from the sheet material. The radius of the arc-shaped plate 802 is smaller than the inner wall radius of the pressure roller 5. A notch is provided in the middle of the partition plate 801, and the upper and lower spaces are connected through the notch.

[0039] Working principle of the present invention: Place the plate to be processed on the bracket of the electric heating plate 2. Adjust the vertical distance between the limiting components 6 by driving the telescopic rod. The pressure roller 5 is jointly controlled by the limiting components 6 and the main spring 3. Under the action of the main spring 3, the toothed plates 501 at both ends of the pressure roller 5 are connected to the limiting components 6. By changing the distance between the limiting components 6, the clearance difference between the pressure rollers 5 is changed. The plate is extruded by the pressure rollers 5, and at the same time, the thickness of the plate after extrusion is changed. Connect the pipes 503 at both ends of the pressure roller 5 to the water pipe. Among them, the slider 1 is horizontally slid along the inner wall of the bracket by driving the telescopic rod;

[0040] After the plate is heated, extend one end of the plate into the gap between the pressure rollers 5. The driving telescopic rod is connected to the main shaft 502 through the fork arm 4, so as to realize the synchronous horizontal movement of the slider 1 driving the pressure roller 5. Among them, the toothed plates 501 at both ends of the pressure roller 5 are engaged with the limiting components 6. The limiting plate 601 is respectively engaged with the equal-width plate 5011 and the asymptotic plate 5012 through the engaging plate 602, so as to realize the rolling of the pressure roller 5 along the outer wall of the plate during the horizontal movement;

[0041] Since the center of the equal-width plate 5011 coincides with the center of the pressure roller 5, when the engaging plate 602 is engaged with the equal-width plate 5011, the vertical section of the plate pressed by the pressure roller 5 is rectangular, and the thickness of each part of the pressed plate is the same. The asymptotic plate 5012 is in a spiral asymptotic line segment. The connection line formed between the center of the pressure roller 5 and the contact point between the pressure roller 5 and the plate intersects with the spiral asymptotic line segment, and the distance between the intersection point and the center of the pressure roller 5 decreases in an arithmetic progression as the pressure roller 5 rolls. When the engaging plate 602 is engaged with the asymptotic plate 5012, the vertical section of the plate pressed by the pressure roller 5 is trapezoidal, and the thin end of the trapezoidal plate is close to the rectangular plate. After the engaging plate 602 is engaged with the asymptotic plate 5012, it is connected to the flat plate 5013. The driving component 7 and the center of the pressure roller 5 are respectively located on both sides of the upper limit of the flat plate 5013. At this time, the slider 1 continues to move a certain distance towards the side where the electric heating plate 2 is located under the drive of the telescopic rod. Since the side of the flat plate 5013 connected to the limiting plate 601 is a smooth plane, the pressure roller 5 only slides horizontally under the drive of the slider 1 and does not have the power to roll;

[0042] After the slider 1 moves to the upper limit driven by the driving telescopic rod, the slider 1 retracts driven by the driving telescopic rod, and the slider 1 drives the pressure roller 5 to retract synchronously. At this time, the pressure roller 5 is connected to the plate through the driving assembly 7. The eccentric plate 703 is in contact with the plate under the action of the spring shaft. The eccentric plate 703 slides relative to the plate driven by the slider 1. The frictional force generated between the eccentric plate 703 and the plate causes the eccentric plate 703 to deflect around the spring shaft. Since the distances between different parts of the outer wall of the eccentric plate 703 and the spring shaft are different, as the eccentric plate 703 deflects, the pressure of the outer wall of the eccentric plate 703 on the plate gradually increases, thereby realizing relative rest between the eccentric plate 703 and the plate. The plate moves synchronously with the pressure roller 5 under the action of the slider 1 until a section where the asymptotic plate 5012 is connected to the flat plate 5013 contacts the meshing plate 602 again, causing the pressure roller 5 to start rotating and rolling. Subsequently, the pressure of the eccentric plate 703 on the plate disappears, and the pressure roller 5 rolls relative to the plate again;

[0043] The slider 1 is fixedly connected to the pipe 503. During the movement of the slider 1 driving the pressure roller 5, the angle between the pipe 503 and the partition 801 relative to the bracket remains fixed. The opening of the partition 801 faces the plate. During the processing of the plate by the pressure roller 5, cooling water enters the space on one side of the partition 801 through the pipe 503. The space on the side where the cooling water enters is the side where the pressure roller 5 is close to the plate. After the water enters the pressure roller 5 through the pipe 503, it flows along the gap between the arc-shaped plate 802 and the pressure roller 5 towards the inner wall of the space on the other side of the partition 801. The water after passing through the arc-shaped plate 802 enters the other side space of the partition 801 through the grid 803 and the notch respectively. Part of the cooling water passing through the grid 803 will contact the heat dissipation plate 804, and then form a confluence with the water at the notch, and finally leave through the water outlet on the other side of the pressure roller 5;

[0044] During the pressing of the plate by the pressure roller 5, the pressure roller 5 has a driving force to push the plate in the horizontal movement state, and the pushing direction is the same as the movement direction of the pressure roller 5. The plate moves towards the side close to the electric heating plate 2 under the action of the pressure roller 5. There are bumps 201 between the electric heating plates 2. The electric heating plates 2 make the bumps 201 contact the plate under the action of the spring shaft. During the movement of the plate, the plate drives the electric heating plates 2 to deflect around the spring shaft through the bumps 201. Since the electric heating plates 2 are eccentric structures, the pressure of the electric heating plates 2 on the plate continuously increases during the deflection. Due to the factor of the plate thickness, the electric heating plates 2 are prevented from continuing to deflect, and the electric heating plates 2 cannot continue to deflect, resulting in the plate being unable to continue sliding relative to the bumps 201. The electric heating plates 2 and the plate restrict each other, realizing that during the pressing of the pressure roller 5, the plate is in a stationary state under the restriction of the electric heating plates 2.

[0045] It should be noted that in this text, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sheet flattening machine with a roll stress balance function, comprising a bracket, an electric heating plate (2) and a driving telescopic rod, characterized in that: Several driving telescopic rods are installed inside the bracket. An electric heating plate (2) is installed on one side of the bracket. A slider (1) is arranged on one side of the electric heating plate (2). The slider (1) is movably connected to the bracket through the driving telescopic rod. Main springs (3) are installed at the upper and lower ends of the slider (1). One end of the main spring (3) is provided with a fork arm (4). A pressure roller (5) is installed in the middle of the fork arm (4). A plate is installed between the pressure rollers (5). A limiting component (6) is installed on the side of the pressure roller (5) away from the fork arm (4). The limiting component (6) is used to control the rotation of the pressure roller (5). A driving component (7) is arranged on the outer wall of the pressure roller (5). The driving component (7) is used to control the sliding of the plate. A heat dissipation component (8) is arranged inside the pressure roller (5). The heat dissipation component (8) is used to accelerate the heat loss inside the pressure roller (5); Tooth plates (501) are arranged on both sides of the pressure roller (5). The tooth plate (501) includes an equal-width plate (5011), an asymptotic plate (5012) and a flat plate (5013). A main shaft (502) is arranged on one side of the equal-width plate (5011). The equal-width plate (5011), the asymptotic plate (5012) and the flat plate (5013) are circumferentially distributed about the main shaft (502). The equal-width plate (5011) is connected to the limiting component (6). The main shaft (502) is connected to the fork arm (4). A pipeline (503) is arranged in the middle of the main shaft (502). The main shaft (502) is movably connected to the pipeline (503). The pipeline (503) is connected to the heat dissipation component (8); The driving component (7) includes a groove (701) opened on the outer wall of the pressure roller (5). A clamping groove (702) is arranged inside the groove (701). An eccentric plate (703) is arranged inside the clamping groove (702). The eccentric plate (703) is movably connected to the clamping groove (702) through a spring shaft. The clamping groove (702) limits the angular deflection range of the eccentric plate (703); Protrusions (201) are arranged on the outer wall of the electric heating plate (2). The length of the protrusion (201) is greater than the length of the electric heating plate (2). The electric heating plate (2) is of an arc structure. The electric heating plate (2) is movably connected to the bracket. The deflection center of the electric heating plate (2) is located on one side of the arc structure; The equal-width plate (5011) is of a circular arc structure. The center of the equal-width plate (5011) coincides with the center of the pressure roller (5). The asymptotic plate (5012) is of a spiral line segment structure. One end of the spiral line segment is connected to the equal-width plate (5011). The end of the spiral line segment connected to the equal-width plate (5011) is farther from the center of the pressure roller (5). The other end of the spiral line segment is connected to the flat plate (5013). The end of the spiral line segment connected to the flat plate (5013) is closer to the center of the pressure roller (5). The connection line between the center of the pressure roller (5) and the midpoint of the flat plate (5013) is perpendicular to the flat plate (5013). One side surface of the flat plate (5013) is a smooth plane.

2. The sheet flattening machine with a roll stress balance function according to claim 1, characterized in that: The limiting component (6) includes a limiting plate (601) installed on one side of the equal-width plate (5011). One side of the limiting plate (601) is provided with a meshing plate (602). The limiting plate (601) is meshingly connected to the equal-width plate (5011) and the asymptotic plate (5012) through the meshing plate (602). The length of the meshing plate (602) is less than the length of the limiting plate (601). The two ends of the limiting plate (601) are provided with driving telescopic rods, and the limiting plate (601) forms a lifting structure relative to the bracket through the driving telescopic rods.

3. A sheet leveling machine with a roll stress balance function according to claim 1, characterized in that: The heat dissipation component (8) includes a partition plate (801) installed on one side of the pipeline (503). The partition plate (801) is located inside the pressure roller (5). One side of the partition plate (801) is provided with an arc-shaped plate (802). One side of the arc-shaped plate (802) is provided with a grid (803). A heat dissipation plate (804) is installed on the inner wall of the grid (803).

4. A sheet flattening machine with a roll stress balance function according to claim 3, characterized in that: The inside of the pressure roller (5) is a cylindrical cavity. The partition plate (801) divides the cavity into upper and lower spaces. The pipeline (503) includes a water inlet pipe and a water outlet pipe. The water inlet pipe is located inside the space on the side of the partition plate (801) close to the plate. The water outlet pipe is connected to the space on the side away from the plate. The radius of the arc-shaped plate (802) is less than the inner wall radius of the pressure roller (5). A notch is provided in the middle of the partition plate (801), and the upper and lower spaces are connected through the notch.

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