A hot-dip galvanizing high-strength steel longitudinal cutting and slitting black oil printing elimination device

Abstract

The application relates to the technical field of metal plate shearing processing, and particularly discloses a hot-dip galvanizing high-strength steel longitudinal cutting and slitting black oil mark eliminating device, which comprises a tension table mechanism and a felt pad. The tension table mechanism comprises an upper pressing table and a lower pressing table which are vertically and separately installed on a tension table support frame. A hydraulic drive mechanism is vertically installed at the top end of the tension table support frame, and the upper pressing table slides along the tension table support frame in the vertical direction. The felt pad comprises upper felt and lower felt which are respectively installed on the adjacent surfaces of the upper pressing table and the lower pressing table. Two groups of PVC thin plates are arranged on the side of the upper felt and the lower felt close to the finished product narrow steel roll. A hot-dip galvanizing steel roll mother roll is cut by the longitudinal cutting and slitting machine to form the finished product narrow steel roll, and the finished product narrow steel roll is wound by the winding machine. The black oil mark defect in the longitudinal cutting and slitting process is eliminated from the source, the winding tension is stable, and the device can be directly matched with most existing longitudinal cutting and slitting production lines.

Description

Technical Field

[0001] This application relates to the field of metal sheet shearing technology, and in particular to a device for removing black ink stains from the longitudinal cutting of hot-dip galvanized high-strength steel. Background Technology

[0002] With the rapid development of the new energy vehicle industry, hot-dip galvanized high-strength steel, due to its excellent corrosion resistance and mechanical properties, is widely used in the manufacture of vehicle body structural components, and market demand continues to grow. Hot-dip galvanized steel coils need to be slit into narrow coils of a specified width before they can be used in subsequent production. Most existing slit production lines use felt-type tension tables to provide stable tension during the coiling process, ensuring that the steel coils are coiled tightly and flat.

[0003] However, in actual production, when the felt comes into direct contact with the surface of the hot-dip galvanized steel coil, the friction between them is significant. During the high-speed operation of the steel coil, a large amount of frictional heat is generated, causing the hot-dip galvanized layer to oxidize and turn black. Simultaneously, residual lubricating oil, shearing debris, and felt fibers shed during long-term use transfer to the surface of the steel coil, mixing with zinc oxide to form stubborn black oil stains. This defect severely affects the surface quality of the finished steel coil, leading to strong complaints from downstream customers. Manufacturers are forced to invest heavily in manual labor to wipe and clean each produced part individually, significantly increasing production costs and reducing production efficiency.

[0004] The aforementioned problems have long plagued the industry's production. Existing technologies lack an effective solution that can fundamentally solve the black ink printing defects caused by direct contact between the felt and the steel coil, while retaining the advantages of stable tensioning of the felt tension table. Summary of the Invention

[0005] This application provides a device for eliminating black ink marks during the slitting of hot-dip galvanized high-strength steel. This device solves the problems of black ink marks caused by direct contact and friction between the felt of the felt tension table and the hot-dip galvanized steel coil in the prior art, as well as the defects of existing alternatives such as scratching the plate surface and being unable to produce continuously. It eliminates the black ink mark defect in the slitting process from the root, while ensuring stable winding tension. It can be directly adapted to most existing slitting production lines.

[0006] In a first aspect, embodiments of the present invention provide a device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel, comprising: a tension table mechanism and a felt pad; wherein a slitting machine is provided on one side of the input end of the tension table mechanism, and a winding machine is provided on one side of the output end; the tension table mechanism includes: an upper pressure table and a lower pressure table, which are vertically spaced on a tension table support frame; a hydraulic drive mechanism is vertically installed on the top of the tension table support frame, and its extended end is connected to the upper pressure table, the upper pressure table sliding vertically along the tension table support frame; the felt pad includes: an upper felt and a lower felt, which are respectively installed on the adjacent surfaces of the upper pressure table and the lower pressure table; two sets of PVC sheets are provided, which are respectively placed on the side of the upper felt and the lower felt close to the finished narrow steel coil; the hot-dip galvanized steel coil is cut by the slitting machine to form the finished narrow steel coil, and the finished narrow steel coil is wound up by the winding machine.

[0007] In one possible implementation, anti-slip gaps are reserved between the four periphery of the PVC sheet and the four periphery of the corresponding upper and lower felts; when the hydraulic drive mechanism drives the upper pressure table to press down, the upper and lower felts are subjected to pressure and undergo planar extension deformation, so that the edge of the PVC sheet is embedded in the interior of the upper and lower felts.

[0008] In one possible implementation, square grooves are formed on the adjacent surfaces of the upper and lower pressing platforms; the upper and lower felts are respectively embedded in the square grooves; the upper and lower felts are respectively bonded to the inner wall of the square grooves.

[0009] In one possible implementation, the tension table support frame includes: at least four vertical columns, each of which has a vertically extending groove on its inner sidewall; at least two sets of limiting blocks, which are symmetrically arranged on both sides of the upper pressure table, and each limiting block has a slider on both sides, the slider being slidably embedded in the groove of the corresponding vertical column; mounting blocks are spaced apart on the upper part of each limiting block, the top of each mounting block being connected to the output end of the hydraulic drive mechanism, and a pressure sensor being provided between the mounting block and the limiting block.

[0010] In one possible implementation, the hydraulic drive mechanism further includes: at least two hydraulic cylinders, an electromagnetic directional valve assembly, and a hydraulic pump station. The two hydraulic cylinders are respectively vertically fixed on both sides of the top of the tension table support frame. The piston rods of the hydraulic cylinders extend downward and are connected to the top of the mounting blocks on the corresponding sides. The electromagnetic directional valve assembly is connected to the two hydraulic cylinders and the hydraulic pump station respectively. An electronic level is installed on the top surface of the upper pressure table. A control box is provided, in which the pressure sensors, the electronic level, and the electromagnetic directional valve assembly are all electrically connected. The control box is configured to: receive the pressure values ​​detected by the two pressure sensors and the horizontal tilt angle of the upper pressure table detected by the electronic level in real time; when the difference between the pressure values ​​on both sides is greater than a first preset threshold, or the horizontal tilt angle of the upper pressure table is greater than a second preset threshold, send an adjustment signal to the electromagnetic directional valve assembly to control the extension and retraction of the piston rods of the corresponding hydraulic cylinders until the pressure difference on both sides is less than the first preset threshold and the horizontal tilt angle of the upper pressure table is less than the second preset threshold.

[0011] In one possible implementation, it further includes: a deburring mechanism, of which multiple deburring mechanisms are provided and spaced apart on one side of the input end of the tension table mechanism, each deburring mechanism corresponding to a narrow steel bar; wherein the deburring mechanism includes: an L-shaped mounting bracket, a protective shell, an electric telescopic rod, and a scraper mechanism; one end of the L-shaped mounting bracket is mounted on the outer wall of the lower pressure table, and the other end extends horizontally away from the lower pressure table; the protective shell is disposed in the opening of the L-shaped mounting bracket, the electric telescopic rod is vertically fixed to the bottom surface of the opening of the L-shaped mounting bracket, and the top end is connected to the protective shell; the scraper mechanism is installed inside the protective shell.

[0012] In one possible implementation, the scraper mechanism includes: an opening and closing blade holder and a flexible blade assembly. The opening and closing blade holder is C-shaped and installed inside the protective housing. The flexible blade assembly is installed at both ends of the opening and closing blade holder. The opening and closing blade holder includes: a first mounting plate and a second mounting plate, symmetrically arranged inside the protective housing, with the bottoms of the first mounting plate and the second mounting plate close together; a first drive plate and a second drive plate, respectively disposed on the outer sides of the first mounting plate and the second mounting plate; the first drive plate, the second drive plate, the first mounting plate, and the second mounting plate are all C-shaped; the C-shaped first drive plate and the second drive plate slide along the outer walls of the first mounting plate and the second mounting plate; a first gear and a second gear are respectively fixedly installed on the first mounting plate and the second mounting plate. The scraper mechanism further includes: a second mounting plate with its bottom outer wall meshing with the first mounting plate; a first mounting rod with one end connected to the center of the first gear away from the first mounting plate, and the other end rotatably connected to the inner wall of the protective shell; a drive rod with one end connected to the center of the second gear away from the second mounting plate, and the other end passing through the outer wall of the protective shell and connected to a drive motor, the drive motor sliding vertically along the inner wall of the L-shaped mounting frame; the scraper mechanism also includes: a rocker arm assembly, provided in two sets, respectively installed between the first mounting plate and the first drive plate and between the second mounting plate and the second drive plate; wherein the first mounting plate and the second mounting plate cooperate with the two sets of rocker arm assemblies to drive the first drive plate and the second drive plate to slide on the outer walls of the first mounting plate and the second mounting plate.

[0013] In one possible implementation, the rocker arm assembly includes: a first rocker arm, one end of which is rotatably connected to the side of the first mounting plate or the second mounting plate near the drive rod, the first rocker arm being disposed on one side of the first mounting rod or the drive rod; a second mounting rod, one end of which is rotatably connected to the inner wall of the protective shell; a second rocker arm, one end of which is connected to the side of the second mounting rod away from the protective shell, and the other end of which is parallel to the plane of the first mounting plate or the second mounting plate; the other end of the first rocker arm is hinged to the end of the second rocker arm near the second mounting rod; a third rocker arm, one end of which is hinged to the end of the second rocker arm away from the second mounting rod; a third mounting rod, one end of which is rotatably mounted on the inner wall of the protective shell; a fourth rocker arm, one end of which is rotatably connected to the other end of the third mounting rod; the other end of the third rocker arm is hinged to the end of the fourth rocker arm near the third mounting rod; and an arc-shaped rod, one end of which is hinged to the end of the fourth rocker arm away from the third mounting rod, and the other end of which is hinged to the outer wall of the top of the first drive plate or the second drive plate.

[0014] In one possible implementation, the elastic blade assembly includes: a pull rope, one end of which is wound around the outer wall of the drive rod or the first mounting rod; a lower blade head and an upper blade head, the lower blade head being mounted on the inner wall of the top of the first drive plate or the second drive plate; a hinge plate, disposed on the end wall of the first drive plate or the second drive plate; wherein the mounting end of the upper blade head is hinged to the hinge plate, and the end of the pull rope away from the first mounting rod is connected to the side of the upper blade head near the hinge plate; a tension spring, disposed between the upper blade head and the lower blade head; the tension spring, in conjunction with the pull rope, is used to pull the upper blade head toward the lower blade head when the first mounting rod and the drive rod rotate.

[0015] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: This invention fundamentally solves the problem of frictional blackening caused by direct contact between the felt and the steel coil in traditional tensioning tables by setting a fixed PVC sheet as an isolation layer. The smooth surface of the PVC sheet results in a much lower frictional force between it and the hot-dip galvanized steel coil compared to that between the felt and the steel coil, significantly reducing the possibility of frictional heat generation and material transfer. Simultaneously, the PVC sheet itself does not contain oil or fiber impurities, preventing secondary contamination of the steel coil surface and completely eliminating all conditions that could lead to black ink stains. The tensioning table mechanism provides stable and uniform tension during the winding process, effectively preventing problems such as loose layers, misalignment, and tapering during the winding of finished narrow steel coils, ensuring winding quality. The overall structure is simple and can be directly adapted to most existing slitting production lines without requiring large-scale modifications to existing equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the elimination device structure provided in the embodiments of this application; Figure 2 This is a schematic diagram of the tension table mechanism provided in an embodiment of this application; Figure 3 This is a schematic diagram of the hydraulic drive mechanism structure provided in the embodiments of this application; Figure 4 This is a schematic diagram of the felt pad structure provided in an embodiment of this application; Figure 5 This is a schematic diagram of the deburring mechanism installation provided in an embodiment of this application; Figure 6This is a schematic diagram of the opening and closing tool holder structure provided in an embodiment of this application; Figure 7 This is a schematic diagram of the swing arm assembly structure provided in an embodiment of this application; Figure 8 This is a schematic diagram of the elastic blade assembly structure provided in an embodiment of this application.

[0018] icon: 100-Tension table mechanism; 110 - Upper pressure table; 120 - Lower pressure table; 130-Tension table support frame; 131-Vertical column; 132-Slide groove; 133-Limit block; 134-Slider; 135-Mounting block; 140 - Hydraulic drive mechanism; 141-Hydraulic cylinder; 142-Pressure sensor; 143-Electronic level; 150-square groove; 200-felt pad; 210 - Top felt; 220 - Bottom felt; 230 - PVC sheet; 240 - Anti-slip spacing; 300-Longitudinal Slitting Machine; 400 - Deburring mechanism; 410 - Mounting bracket; 420 - Protective housing; 430 - Electric telescopic pole; 440 - Scraper mechanism; 441-Opening / closing tool holder; 442-Elastic tool assembly; 443-First mounting plate; 444-Second mounting plate; 445-First drive plate; 446-Second drive plate; 447-First gear; 448-Second gear; 449-First mounting rod; 451-Drive rod; 452-Pull rope; 453-Upper tool head; 454-Hinge plate; 455-Tension spring; 456-Lower tool head; 460-Swing Arm Assembly; 461 - First swing arm; 462 - Second mounting arm; 463 - Second swing arm; 464 - Third swing arm; 465 - Third mounting arm; 466 - Fourth swing arm; 467 - Curved arm; 480 - Drive motor; 500- Narrow steel bar. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0021] Example 1 Please see Figures 1-8 A device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel includes: a tension table mechanism 100 and a felt pad 200; wherein a slitting machine 300 is provided on one side of the input end of the tension table mechanism 100, and a winding machine is provided on one side of the output end; the tension table mechanism 100 includes: an upper pressure table 110 and a lower pressure table 120, which are vertically spaced on a tension table support frame 130; a hydraulic drive mechanism 140 is vertically installed at the top of the tension table support frame 130, and its extended end is connected to the upper pressure table 110. 0. The upper pressure table 110 slides vertically along the tension table support frame 130; the felt pad 200 includes: an upper felt 210 and a lower felt 220, which are respectively installed on the adjacent surfaces of the upper pressure table 110 and the lower pressure table 120; two sets of PVC sheets 230 are provided, which are respectively placed on the side of the upper felt 210 and the lower felt 220 close to the finished narrow steel coil; the hot-dip galvanized steel coil master coil is cut by the slitting machine 300 to form the finished narrow steel coil, and the finished narrow steel coil is wound up by the winding machine.

[0022] In the above embodiments, in a traditional slitting production line, the felt of the tension table is in direct contact with the surface of the hot-dip galvanized steel coil. The friction between the felt and the steel coil is significant, generating a large amount of frictional heat during the high-speed sliding process. Simultaneously, residual lubricating oil, shearing debris, and detached felt fibers on the felt transfer to the surface of the steel coil. Under the influence of frictional heat, the zinc layer oxidizes and turns black, forming a difficult-to-remove black oil stain. In this device, the hot-dip galvanized steel coil is first conveyed to the feed end of the slitting machine 300. After being longitudinally cut by multiple sets of disc shears, it is slit into multiple finished narrow steel coils of uniform width. The slit finished narrow steel coils are output from the discharge end of the slitting machine 300, horizontally passing through the gap between the upper pressure table 110 and the lower pressure table 120 in the tension table mechanism 100, and finally continuously wound by the downstream winding machine. The hydraulic drive mechanism 140 is vertically fixed to... On the top crossbeam of the tension table support frame 130, its extended end extends downward, driving the upper pressure table 110 to slide smoothly down along the vertical guide structure, so that the upper pressure table 110 gradually moves closer to the lower pressure table 120. The adjacent surfaces of the upper pressure table 110 and the lower pressure table 120 are respectively fixed with completely immobile upper felt 210 and lower felt 220. Two sets of PVC sheets 230 are respectively laid flat on the side of the upper felt 210 and lower felt 220 close to the finished narrow steel coil, and the PVC sheets 230 are also completely immobile. As the upper pressure table 110 moves down, the upper felt 210 and lower felt 220 drive the upper and lower PVC sheets 230 to gradually clamp the finished narrow steel coil in the middle. Under the traction of the winding machine, the finished narrow steel coil slides at high speed between the smooth surfaces of the upper and lower PVC sheets 230. The PVC sheets 230 completely block the direct contact between the felt and the steel coil.

[0023] By placing a fixed PVC sheet 230 as an isolation layer between the felt and the steel coil, the problem of frictional blackening caused by direct contact between the felt and the steel coil in traditional tensioning tables is fundamentally solved. The smooth surface of the PVC sheet 230 results in a much lower frictional force between it and the hot-dip galvanized steel coil compared to that between the felt and the steel coil, significantly reducing the possibility of frictional heat generation and material transfer. Simultaneously, the PVC sheet 230 itself does not contain oil or fiber impurities, preventing secondary contamination of the steel coil surface and completely eliminating all conditions conducive to black ink stains. The tensioning table mechanism 100 provides stable and uniform tension during the winding process, effectively preventing problems such as loose layers, misalignment, and tapering during the winding of finished narrow steel coils, ensuring winding quality. The overall structure is simple and can be directly adapted to most existing slitting production lines without requiring large-scale modifications to existing equipment.

[0024] Example 2 Please see Figures 1-8The four edges of the PVC sheet 230 and the four edges of the corresponding upper felt 210 and lower felt 220 are reserved with anti-slip gaps 240. When the hydraulic drive mechanism 140 drives the upper pressure table 110 to press down, the upper felt 210 and lower felt 220 are subjected to pressure and undergo planar extension deformation, so that the edge of the PVC sheet 230 is embedded in the interior of the upper felt 210 and lower felt 220.

[0025] In the above embodiment, when installing the PVC sheet 230, the PVC sheet 230 is pre-cut to a size slightly smaller than the working surface of the upper felt 210 and the lower felt 220. Then, the PVC sheet 230 is placed centrally on the surface of the upper felt 210 and the lower felt 220, so that a uniform anti-slip gap 240 is formed between the four edges of the PVC sheet 230 and the four edges of the corresponding upper felt 210 and lower felt 220. This gap provides sufficient space for the planar extension of the felt after being compressed. When the hydraulic drive mechanism 140 drives the upper pressure table 110 to move downward, the upper pressure table 110 and the lower pressure table 120 apply vertical compressive force to the upper felt 210 and the lower felt 220 in the middle. Under the action of the compressive force, the upper felt 210 and the lower felt 220 undergo significant compression deformation in the thickness direction. At the same time, due to the porous elastic characteristics of the felt material, it will undergo uniform extension deformation in the planar direction. As the extrusion pressure gradually increases, the felt extends outwards, gradually filling the pre-reserved anti-slip gap 240. Ultimately, the edges of the felt rise above the surface of the PVC sheet 230, forming a continuous physical barrier that effectively blocks the edges of the PVC sheet 230. When the finished narrow steel coil slides at high speed on the surface of the PVC sheet 230, the forward frictional force generated by the steel coil on the PVC sheet 230 is completely offset by the barrier formed by the felt, thus preventing the PVC sheet 230 from being dragged and displaced by the steel coil. When the hydraulic drive mechanism 140 depressurizes and the upper pressure table 110 moves upwards, the upper felt 210 and lower felt 220 return to their original state, the barrier at the edge of the felt disappears, and the PVC sheet 230 can be directly removed for replacement.

[0026] Utilizing the physical property of felt material's planar expansion under pressure, and by pre-reserving an anti-slip gap of 240mm, the felt naturally forms a barrier wall, achieving fastener-free fixing of the PVC sheet 230. This completely eliminates the need for adhesives or additional clips, bolts, or other fasteners, significantly simplifying the installation and replacement process of the PVC sheet 230 and substantially reducing equipment downtime for maintenance. This physical barrier fixing method effectively resists the frictional force generated by the finished narrow steel coil on the PVC sheet 230 during high-speed movement, preventing the PVC sheet 230 from being dragged, shifted, curled, or even detached by the steel coil. This ensures that the PVC sheet 230 remains stably and flatly fixed to the felt surface, continuously providing isolation and protection. Furthermore, this fixing method does not cause any damage to the PVC sheet 230, allowing it to be reused multiple times, further reducing consumable costs.

[0027] Example 3 Please see Figures 1-8 The upper pressure table 110 and the lower pressure table 120 are provided with square grooves 150 on their adjacent surfaces; the upper felt 210 and the lower felt 220 are respectively embedded in the square grooves 150; the upper felt 210 and the lower felt 220 are respectively bonded to the inner wall of the square grooves 150.

[0028] In the above embodiment, square grooves 150, whose dimensions perfectly match the outer dimensions of the upper felt 210 and lower felt 220, are respectively machined on the adjacent surfaces of the upper pressure table 110 and the lower pressure table 120. The depth of the square grooves 150 is slightly less than the original thickness of the upper felt 210 and lower felt 220. When installing the felt pad 200, the upper felt 210 and lower felt 220 are first embedded into the square grooves 150 of the upper pressure table 110 and the lower pressure table 120 respectively, so that the bottom surface and the surrounding sidewalls of the felt are completely attached to the inner wall of the square groove 150. Then, an environmentally friendly adhesive is used to bond and fix the surrounding sidewalls of the upper felt 210 and lower felt 220 to the inner sidewall of the square groove 150, ensuring a firm connection between the felt pad 200 and the pressure table. Throughout the process, no movement occurs. When the hydraulic drive mechanism 140 drives the upper pressure table 110 to press down, the upper felt 210 and lower felt 220 are subjected to vertical compressive force. Due to the omnidirectional limitation of the felt by the side walls of the square groove 150, the felt can only undergo compression deformation inside the square groove 150 and can only extend in a planar direction towards the center of the square groove 150, without the edges curling outward or the whole sliding and shifting on the pressure table surface. The part of the felt extending towards the center evenly fills the anti-slip spacing 240 around the PVC sheet 230, forming a barrier wall of uniform height, ensuring that the blocking force on the four edges of the PVC sheet 230 is evenly distributed, making the fixation of the PVC sheet 230 more reliable. The clamping force is evenly transmitted to the PVC sheet 230 through the felt, and then evenly transmitted to the entire surface of the steel coil by the PVC sheet 230.

[0029] The combination of mechanical positioning of the square channel 150 and adhesive bonding forms a dual fixing mechanism, making the installation of the upper felt 210 and lower felt 220 more secure and reliable. This completely solves the problems of displacement, detachment, and edge lifting of the felt pad 200 under long-term repeated clamping and friction from the steel coil, which are common with traditional direct pasting methods. The square channel 150 ensures that the upper felt 210 and lower felt 220 remain flat, resulting in more uniform felt plane extension and a consistent barrier height. This avoids the displacement of the PVC sheet 230 caused by insufficient localized blocking force. Simultaneously, the square channel 150 ensures that the clamping force is evenly distributed across the entire width of the finished narrow steel coil, preventing uneven adhesion of the PVC sheet 230 and the generation of black ink marks due to excessive or insufficient localized pressure. The protective effect of the square channel 150 on the felt also reduces wear during use, significantly extending the service life of the felt pad 200.

[0030] Example 4 Please see Figures 1-8 The tension table support frame 130 includes: at least four vertical columns 131, each of which has a vertically extending groove 132 on its inner sidewall; at least two sets of limiting blocks 133, which are symmetrically arranged on both sides of the upper pressure table 110, and each limiting block 133 has a slider 134 on both sides, which is slidably embedded in the groove 132 of the corresponding vertical column 131; each limiting block 133 has a mounting block 135 spaced apart on its upper part, the top of which is connected to the output end of the hydraulic drive mechanism 140, and a pressure sensor 142 is provided between the mounting block 135 and the limiting block 133.

[0031] In the above embodiment, the tension table support frame 130 adopts a frame structure, which is welded together from at least four vertical columns 131, a top crossbeam, and a bottom base. The four vertical columns 131 are rectangularly distributed and located at the four corners of the upper pressure table 110. Each vertical column 131 has a vertically extending, continuous sliding groove 132 machined on its inner sidewall. The groove 132 has a rectangular cross-section and high machining precision. Two sets of limiting blocks 133 are symmetrically fixedly installed on the left and right sidewalls of the upper pressure table 110. Each limiting block 133 has a slider 134 fixedly connected to its front and rear sides by bolts. The size of the slider 134 matches the size of the groove 132 and is slidably embedded in the groove 132 of the corresponding vertical column 131, so that the limiting block 133 and the upper pressure table 110 can slide vertically along the groove 132 as a whole without horizontal offset. Each limiting block 133 has two mounting blocks 135 spaced apart on its upper surface. The top of each mounting block 135 is fixedly connected to the output end of the hydraulic drive mechanism 140. A pressure sensor 142 is sandwiched between the bottom surface of the mounting block 135 and the top surface of the limiting block 133. The detection surface of the pressure sensor 142 is in close contact with both the mounting block 135 and the limiting block 133. When the hydraulic drive mechanism 140 extends, the driving force is transmitted to the pressure sensor 142 through the mounting block 135, and then to the limiting block 133 through the pressure sensor 142. This ultimately drives the upper pressure table 110 to move vertically along the slide groove 132. The pressure sensor 142 detects the pressure value between the two in real time and transmits the signal to the control system.

[0032] The precise fit between slider 134 and slide groove 132 provides accurate guidance for the vertical movement of upper pressure table 110, ensuring that upper pressure table 110 slides smoothly in the vertical direction throughout the entire stroke. This effectively avoids tilting, jamming, and shaking of upper pressure table 110, ensuring that upper felt 210 and lower felt 220 can evenly clamp PVC sheet 230 and steel coil, so that the friction between PVC sheet 230 and steel coil is evenly distributed, and there will be no problem of black oil stains caused by excessive local friction. The limiting block 133 not only connects the slider 134 and the upper pressure table 110, but also limits the maximum downward stroke of the upper pressure table 110, preventing the hydraulic drive mechanism 140 from having too large a stroke and causing excessive pressure, which could damage the zinc layer on the surface of the hot-dip galvanized steel coil. The pressure sensor 142 can detect the clamping force of the upper pressure table 110 in real time and accurately, providing reliable data support for subsequent automatic pressure adjustment, ensuring that the clamping force is always within the optimal range, which can ensure the tight fit between the PVC sheet 230 and the steel coil, and prevent the steel coil from deforming or the zinc layer from falling off due to excessive pressure.

[0033] Example 5 Please see Figures 1-8The hydraulic drive mechanism 140 further includes: at least two hydraulic cylinders 141, an electromagnetic reversing valve assembly, and a hydraulic pump station. The two hydraulic cylinders 141 are vertically fixed to both sides of the top of the tension table support frame 130. The piston rods of the hydraulic cylinders 141 extend downwards and are connected to the top of the mounting blocks 135 on the corresponding sides. The electromagnetic reversing valve assembly is connected to the two hydraulic cylinders 141 and the hydraulic pump station. An electronic level 143 is mounted on the top surface of the upper pressure table 110. A control box contains the pressure sensor 142, the electronic level 143, and the electromagnetic reversing valve assembly. The magnetic directional valve assembly is electrically connected to the control box. The control box is configured to receive pressure values ​​detected by two pressure sensors 142 and horizontal tilt angle values ​​of the upper pressure platform 110 detected by an electronic level 143 in real time. When the difference between the pressure values ​​on both sides is greater than a first preset threshold, or the horizontal tilt angle value of the upper pressure platform 110 is greater than a second preset threshold, an adjustment signal is sent to the electromagnetic directional valve assembly to control the extension and retraction of the piston rod of the corresponding hydraulic cylinder 141 until the pressure difference on both sides is less than the first preset threshold and the horizontal tilt angle value of the upper pressure platform 110 is less than the second preset threshold.

[0034] In the above embodiment, the hydraulic drive mechanism 140 mainly consists of a hydraulic pump station, an electromagnetic directional valve assembly, and at least two hydraulic cylinders 141. The hydraulic pump station serves as a power source, providing pressurized oil to the entire hydraulic system. The electromagnetic directional valve assembly is installed on the output pipeline of the hydraulic pump station and is connected to the rodless chamber and rod chamber of the two hydraulic cylinders 141, respectively. By controlling the on / off state of the electromagnetic directional valve, the extension and retraction direction and speed of the piston rod of each hydraulic cylinder 141 can be independently controlled. The two hydraulic cylinders 141 are vertically fixed on the left and right sides of the top crossbeam of the tension table support frame 130, respectively, with their piston rods extending vertically downward and fixedly connected to the top of the mounting block 135 on the corresponding side. The electronic level 143 is fixedly installed at the center position of the top surface of the upper pressure platform 110 by bolts, and can detect the tilt angle of the upper pressure platform 110 relative to the horizontal plane in real time. The control box is installed on the side of the tension table support frame 130 and contains a PLC controller. The signal output terminals of the pressure sensor 142 and the electronic level 143 are electrically connected to the input terminal of the PLC controller, and the output terminal of the PLC controller is electrically connected to the control terminal of the solenoid directional valve group. The PLC controller receives the pressure values ​​detected by the two pressure sensors 142 and the horizontal tilt angle value detected by the electronic level 143 in real time. When the difference between the pressure values ​​on both sides is greater than the first preset threshold, or the horizontal tilt angle value of the upper pressure table 110 is greater than the second preset threshold, the PLC controller sends a corresponding adjustment signal to the solenoid directional valve group to individually control the piston rod extension and retraction of the corresponding side hydraulic cylinder 141, and fine-tunes the pressure and height on one side until the pressure difference on both sides is less than the first preset threshold and the horizontal tilt angle value of the upper pressure table 110 is less than the second preset threshold.

[0035] The system achieves independent automatic closed-loop adjustment of the clamping force and levelness on both sides of the upper pressure table 110. It automatically corrects uneven pressure and tilting issues that occur during operation, ensuring uniform clamping force throughout the upper pressure table 110. This avoids problems such as PVC sheet 230 misalignment, steel coil deformation, and excessive local friction leading to black oil stains caused by uneven pressure on one side. The automatic adjustment function requires no manual intervention, significantly improving the automation level and operational stability of the equipment, and reducing the labor intensity of operators. Simultaneously, the system can automatically adapt to hot-dip galvanized steel coils of different thicknesses and materials, ensuring consistent black oil stain removal effects across different batches and specifications of steel coils, significantly improving the quality stability and pass rate of finished steel coils. Uniform clamping force also extends the service life of the PVC sheet 230 and felt pad 200, reducing the frequency of consumable replacement.

[0036] Example 6 Please see Figures 1-8 It also includes: deburring mechanisms 400, of which multiple are provided and are installed at intervals on one side of the input end of the tension table mechanism 100, each of the deburring mechanisms 400 corresponding to a narrow steel strip 500; wherein the deburring mechanism 400 includes: an L-shaped mounting bracket 410, a protective shell 420, an electric telescopic rod 430 and a scraper mechanism 440; one end of the L-shaped mounting bracket 410 is installed on the outer wall of the lower pressure table 120, and the other end extends horizontally away from the lower pressure table 120; the protective shell 420 is disposed in the opening of the L-shaped mounting bracket 410, the electric telescopic rod 430 is vertically fixed to the bottom surface of the opening of the L-shaped mounting bracket 410, and the top end is connected to the protective shell 420; the scraper mechanism 440 is installed inside the protective shell 420.

[0037] In the above embodiment, multiple deburring mechanisms 400 are fixedly installed at intervals on one side of the input end of the tension table mechanism 100, with the same spacing as the slit narrow steel strips 500. The central axis of each deburring mechanism 400 coincides with the operating central axis of the corresponding narrow steel strip 500, ensuring that the scraper mechanism 440 can accurately align with the two sides of the narrow steel strip 500. The L-shaped mounting bracket 410 is welded from a horizontal section and a vertical section. The side wall of its vertical section is fixedly installed on the outer side wall of the lower pressure table 120 by bolts, and the horizontal section extends horizontally away from the lower pressure table 120, forming an upward-opening installation space. The electric telescopic rod 430 is vertically fixedly installed at the center of the top surface of the horizontal section of the L-shaped mounting bracket 410, and its top extension extends vertically upward and is fixedly connected to the bottom center of the protective shell 420. The protective shell 420 is a rectangular shell with an opening on one side, and the interior is used to install the scraper mechanism 440, which can prevent burrs from splashing and external dust from entering. When the height of the scraper mechanism 440 needs to be adjusted, the electric telescopic rod 430 is activated, and its extended end drives the protective shell 420 to rise and fall vertically, thereby driving the scraper mechanism 440 installed inside the protective shell 420 to rise and fall synchronously, so that the blade of the scraper mechanism 440 is accurately aligned with the height of the two sides of the narrow steel strip 500. After being cut by the slitting machine 300, the narrow steel strip 500 first passes through the deburring mechanism 400 to remove the shearing burrs on both sides, and then enters the tension table mechanism 100 to slide across the surface of the PVC sheet 230 for black ink stain removal.

[0038] Before the narrow steel strip 500 enters the tension table mechanism 100, the shearing burrs on both sides of its edges are removed. This effectively prevents the hard burrs from scratching the surface of the PVC sheet 230 when passing through the tension table. If the PVC sheet 230 is scratched by burrs, it will cause localized exposure of the felt, which will come into direct contact with the steel coil, resulting in the recurrence of black oil stains. At the same time, the damaged PVC sheet 230 will also wear down faster and require frequent replacement. Therefore, the deburring mechanism 400 avoids damage to the PVC sheet 230 from the source, significantly extending the service life of the PVC sheet 230 and reducing the number of downtime maintenance and costs. The electric telescopic rod 430 can flexibly and precisely adjust the height of the scraper mechanism 440 to adapt to narrow steel strips 500 of different thicknesses, ensuring that the cutter head is always accurately aligned with the edge of the narrow steel strip 500. Multiple independent deburring mechanisms 400 correspond to each narrow steel bar 500, without interfering with each other. They are highly targeted in deburring, have good processing effect, and can complete the deburring operation of multiple narrow steel bars 500 at the same time, meeting the production needs of high-speed production lines.

[0039] Example 7 Please see Figures 1-8The scraper mechanism 440 includes: a C-shaped blade holder 441 and an elastic blade assembly 442. The C-shaped blade holder 441 is installed inside the protective shell 420, and the elastic blade assembly 442 is installed at both ends of the blade holder 441. The blade holder 441 includes: a first mounting plate 443 and a second mounting plate 444, symmetrically arranged inside the protective shell 420, with the bottoms of the first mounting plate 443 and the second mounting plate 444 close to each other; a first drive plate 445 and a second drive plate 446, respectively disposed on the outer sides of the first mounting plate 443 and the second mounting plate 444; the first drive plate 445, the second drive plate 446, the first mounting plate 443, and the second mounting plate 444 are all C-shaped; the C-shaped first drive plate 445 and the second drive plate 446 slide along the outer walls of the first mounting plate 443 and the second mounting plate 444; a first gear 447 and a second gear 448 are respectively fixedly installed on the first mounting plate 443 and the second mounting plate 444. The second mounting plate 444 is attached to the outer wall of its bottom end and meshes with each other; the first mounting rod 449 is connected at one end to the center of the side of the first gear 447 away from the first mounting plate 443, and the other end is rotatably connected to the inner wall of the protective shell 420; the drive rod 451 is connected at one end to the center of the side of the second gear 448 away from the second mounting plate 444, and the other end passes through the outer wall of the protective shell 420 and is connected to the drive motor 480, which slides vertically along the inner wall of the L-shaped mounting bracket 410; the scraper mechanism 440 further includes: a rocker arm assembly 460, which is provided in two sets and is respectively installed between the first mounting plate 443 and the first drive plate 445 and between the second mounting plate 444 and the second drive plate 446; wherein the first mounting plate 443 and the second mounting plate 444 cooperate with the two sets of rocker arm assemblies 460 to drive the first drive plate 445 and the second drive plate 446 to slide on the outer wall of the first mounting plate 443 and the second mounting plate 444.

[0040] In the above embodiment, the opening and closing blade holder 441 of the scraper mechanism 440 is installed in the internal cavity of the protective shell 420. The first mounting plate 443 and the second mounting plate 444 are symmetrically arranged arc-shaped plates with their bottoms close to each other and their tops opening outwards, forming a C-shaped structure with the opening facing the running direction of the narrow steel bar 500. The first gear 447 and the second gear 448 are two identical sector gears, which are fixedly mounted on the bottom outer walls of the first mounting plate 443 and the second mounting plate 444 respectively by flat keys, and the teeth of the two sector gears mesh with each other. The first mounting rod 449 is a cylindrical optical shaft, one end of which is fixedly connected to the center position of the side of the first gear 447 away from the first mounting plate 443 by bolts, and the other end is rotatably connected to the inner side wall of the protective shell 420 by a deep groove ball bearing. The drive rod 451 is a shaft-like part with a square head at one end, one end of which is fixedly connected to the center position of the side of the second gear 448 away from the second mounting plate 444 by flat keys, and the other end passes through the bearing hole on the side wall of the protective shell 420 and is connected to the output shaft of the drive motor 480 fixedly mounted on the outer wall of the protective shell 420 by a coupling. The drive motor 480 moves vertically and synchronously with the protective shell 420. When the drive motor 480 starts, it drives the drive rod 451 to rotate. The drive rod 451 drives the second gear 448 to rotate. The second gear 448 drives the first gear 447 to rotate synchronously in the opposite direction through meshing transmission. This causes the first mounting plate 443 and the second mounting plate 444 to rotate relative to each other around the first mounting rod 449 and the drive rod 451, respectively, adjusting the opening size of the top opening of the opening and closing tool holder 441. At the same time, during the rotation of the first mounting plate 443 and the second mounting plate 444, they drive the two sets of rocker arm assemblies 460 to move. The two sets of rocker arm assemblies 460 then drive the first drive plate 445 and the second drive plate 446 to slide in an arc along the outer wall of the first mounting plate 443 and the second mounting plate 444, so that the top of the first drive plate 445 and the second drive plate 446 always faces the direction of the narrow steel bar 500, which is in conjunction with the opening adjustment of the opening and closing tool holder 441.

[0041] Through the meshing of the first gear 447 and the second gear 448, the two arms of the opening and closing tool holder 441 rotate precisely and synchronously, ensuring the accuracy and synchronicity of the opening adjustment of the tool holder 441. This allows it to adapt to narrow steel bars 500 of different widths, demonstrating strong versatility. The swing arm assembly 460 drives the first drive plate 445 and the second drive plate 446 to move synchronously with the opening and closing tool holder 441, ensuring that the elastic blade assembly 442 mounted on the top of the drive plate can always accurately align with the two sides of the narrow steel bar 500. This improves the precision and effect of deburring, ensuring that all burrs are completely removed and preventing residual burrs from scratching the PVC sheet 230. The completely removed burrs will not enter the subsequent tension table mechanism 100, preventing damage to the PVC sheet 230 and the surface of the steel coil from the source. This significantly extends the service life of the PVC sheet 230 and reduces maintenance costs. At the same time, the drive motor 480 is directly mounted on the outer wall of the protective shell 420, resulting in a compact structure, high transmission efficiency, and convenient maintenance.

[0042] Example 8 Please see Figures 1-8 The rocker arm assembly 460 includes: a first rocker arm 461, one end of which is rotatably connected to the side of the first mounting plate 443 or the second mounting plate 444 near the drive rod 451, and the first rocker arm 461 is disposed on one side of the first mounting rod 449 or the drive rod 451; a second mounting rod 462, one end of which is rotatably connected to the inner wall of the protective shell 420; a second rocker arm 463, one end of which is connected to the side of the second mounting rod 462 away from the protective shell 420, and the other end of which is parallel to the plane where the first mounting plate 443 or the second mounting plate 444 is located; the other end of the first rocker arm 461 is close to the side of the second rocker arm 463 near the drive rod 451. The second mounting rod 462 is hinged at one end; the third swing rod 464 is hinged at one end to the end of the second swing rod 463 away from the second mounting rod 462; the third mounting rod 465 is rotatably mounted on the inner wall of the protective shell 420 at one end; the fourth swing rod 466 is rotatably connected to the other end of the third mounting rod 465 at one end; the other end of the third swing rod 464 is hinged to the end of the fourth swing rod 466 near the third mounting rod 465; the arc-shaped rod 467 is hinged at one end to the end of the fourth swing rod 466 away from the third mounting rod 465, and the other end is hinged to the outer wall of the top of the first drive plate 445 or the second drive plate 446.

[0043] In the above embodiments, when the first mounting plate 443 or the second mounting plate 444 rotates around the pivot, it drives the first swing rod 461 to swing. The first swing rod 461 pulls the second swing rod 463 to rotate around the second mounting rod 462. The second swing rod 463 drives the fourth swing rod 466 to rotate around the third mounting rod 465 through the third swing rod 464. The fourth swing rod 466 then transmits the motion to the first drive plate 445 or the second drive plate 446 through the arc-shaped rod 467. The arc-shaped structure of the arc-shaped rod 467 can change the direction of force transmission and convert the small-angle swing of the swing rod into a large-stroke sliding of the drive plate, thereby achieving the effect of stroke amplification.

[0044] The transmission structure employs a multi-segment swing arm linkage, combined with the stroke amplification effect of the arc-shaped rod 467. This allows the first drive plate 445 and the second drive plate 446 to achieve a large sliding stroke even when the opening and closing blade holder 441 only rotates at a small angle. This ensures that the elastic blade assembly 442 can reliably fit the edges of narrow steel bars 500 of varying widths, even those with significant width variations. The entire transmission structure uses hinged connections, resulting in smooth movement, low impact, low noise, and uniform wear of all components, leading to a long service life. It eliminates the need for an additional large-stroke drive device, effectively reducing the overall size of the deburring mechanism 400 and making the equipment more compact. This allows for installation next to a confined longitudinal cutting production line. Furthermore, the purely mechanical transmission structure offers high reliability, a low failure rate, low maintenance costs, and adaptability to harsh production environments.

[0045] Example 9 Please see Figures 1-8 The elastic blade assembly 442 includes: a pull rope 452, one end of which is wound around the outer wall of the drive rod 451 or the first mounting rod 449; a lower blade head 456 and an upper blade head 453, wherein the lower blade head 456 is mounted on the inner wall of the top of the first drive plate 445 or the second drive plate 446; a hinge plate 454, which is disposed on the end wall of the first drive plate 445 or the second drive plate 446; wherein the mounting end of the upper blade head 453 is hinged to the hinge plate 454, and the end of the pull rope 452 away from the first mounting rod 449 is connected to the side of the upper blade head 453 near the hinge plate 454; and a tension spring 455, which is disposed between the upper blade head 453 and the lower blade head 456; the tension spring 455 cooperates with the pull rope 452 to pull the upper blade head 453 toward the lower blade head 456 when the first mounting rod 449 and the drive rod 451 rotate.

[0046] In the above embodiment, when the opening and closing cutter holder 441 is in the open state, the drive rod 451 and the first mounting rod 449 fully tighten the elastic pull rope 452. The tension of the elastic pull rope 452 is greater than the tension of the tension spring 455, pulling the upper cutter head 453 outward to the maximum opening angle, so that the upper cutter head 453 is completely retracted to the outside of the drive plate, forming a large opening with the lower cutter head 456, providing sufficient space for the narrow steel bar 500 to pass through, and avoiding collision between the cutter head and the steel bar during the closing process of the opening and closing cutter holder 441. When the drive motor 480 drives the drive rod 451 and the first mounting rod 449 to rotate in opposite directions, causing the opening and closing cutter holder 441 to retract towards the narrow steel bar 500, the drive rod 451 and the first mounting rod 449 synchronously and slowly release the elastic pull rope 452, and the tension of the elastic pull rope 452 gradually decreases. When the tension of the elastic cord 452 is less than that of the tension spring 455, the tension spring 455 slowly pulls the upper cutter head 453 to rotate around the hinge plate 454 toward the narrow steel bar 500. Simultaneously, as the opening / closing cutter holder 441 fully retracts and the lower cutter head 456 adheres to the lower surface of the narrow steel bar 500, the upper cutter head 453 smoothly adheres to the upper surface of the narrow steel bar 500, clamping both sides of the narrow steel bar 500 together with the lower cutter head 456. As the narrow steel bar 500 moves forward, the cutting edges of the upper and lower cutters 456 simultaneously scrape away the burrs from the edges of the narrow steel bar 500. When the opening / closing cutter holder 441 opens away from the narrow steel bar 500, the drive rod 451 and the first mounting rod 449 rotate in opposite directions, re-tightening the elastic cord 452 and overcoming the tension of the tension spring 455 to pull the upper cutter head 453 outwards to reset it to its initial open state.

[0047] Through the reverse linkage between the elastic pull rope 452 and the tension spring 455, the automatic avoidance and progressive clamping of the upper cutter head 453 are achieved, fundamentally solving the problem that traditional cutter heads are prone to bumping into the steel bar surface during opening and closing. When opening, the pull rope 452 completely retracts the cutter head to the outside, making ample space for the steel bar and ensuring that the opening and closing cutter holder 441 will not collide with the steel bar during rapid closing, effectively protecting the zinc layer of the hot-dip galvanized steel coil and the cutter head itself. When closing, the pull rope 452 slowly relaxes, and the tension spring 455 provides a stable clamping force, making... The upper cutter head 453 gently conforms to the surface of the steel strip, resulting in a smooth and impact-free deburring process that prevents zinc layer peeling or cutter head chipping. No separate cutter head drive device is required; the cutter head's avoidance and clamping actions are synchronously completed using the rotational power of the opening and closing cutter holder 441. The structure is simple and compact, with high transmission efficiency and strong reliability. The clamping force and opening angle of the cutter head can be flexibly adjusted by adjusting the elasticity of the tension spring 455 and the initial winding length of the elastic rope 452, making it adaptable to narrow steel strips 500 of varying thickness and hardness, thus offering strong versatility. Furthermore, the cutter head adopts a split design; after wear, only the cutter head needs to be replaced, eliminating the need to replace the entire cutter holder, further reducing maintenance costs.

[0048] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0049] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel, characterized in that, include: Tension table mechanism (100), felt pad (200); among which The tension table mechanism (100) has a slitting machine (300) on one side of its input end and a winding machine on one side of its output end; The tension table mechanism (100) includes: The upper pressure table (110) and the lower pressure table (120) are vertically spaced on the tension table support frame (130); A hydraulic drive mechanism (140) is vertically installed at the top of the tension table support frame (130), and its top end is connected to the upper pressure table (110). The upper pressure table (110) slides vertically along the tension table support frame (130). The felt pad (200) includes: Upper felt (210) and lower felt (220) are respectively installed on the adjacent surfaces of the upper pressure table (110) and the lower pressure table (120); Two sets of PVC sheet (230) are provided, which are placed on the side of the upper felt (210) and lower felt (220) close to the finished narrow steel coil, respectively; The hot-dip galvanized steel coil master coil is cut by the slitting machine (300) to form the finished narrow steel coil, and the finished narrow steel coil is wound up by the winding machine.

2. The device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel as described in claim 1, characterized in that, An anti-slip gap (240) is reserved between the four perimeters of the PVC sheet (230) and the four perimeters of the corresponding upper felt (210) and lower felt (220). When the hydraulic drive mechanism (140) drives the upper pressure table (110) to press down, the upper felt (210) and lower felt (220) are subjected to pressure and undergo planar extension deformation, so that the edge of the PVC sheet (230) is embedded in the interior of the upper felt (210) and lower felt (220).

3. The device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel as described in claim 2, characterized in that, The adjacent surfaces of the upper pressure table (110) and the lower pressure table (120) are provided with square grooves (150). The upper felt (210) and the lower felt (220) are respectively embedded in the square groove (150); The upper felt (210) and the lower felt (220) are respectively bonded to the inner wall of the square groove (150).

4. The device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel as described in claim 3, characterized in that, The tension table support frame (130) includes: At least four vertical columns (131), each of which has a vertically extending groove (132) on its inner sidewall. At least two sets of limiting blocks (133) are provided, and the two sets of limiting blocks (133) are symmetrically arranged on both sides of the upper pressure table (110). Each limiting block (133) has a slider (134) on both sides, and the slider (134) is slidably embedded in the groove (132) of the corresponding vertical column (131). Mounting blocks (135) are spaced apart on the upper part of the limiting block (133). The top of the mounting block (135) is connected to the output end of the hydraulic drive mechanism (140). A pressure sensor (142) is provided between the mounting block (135) and the limiting block (133).

5. The device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel as described in claim 4, characterized in that, The hydraulic drive mechanism (140) further includes: At least two hydraulic cylinders (141), an electromagnetic reversing valve assembly and a hydraulic pump station, wherein the two hydraulic cylinders (141) are respectively vertically fixed on both sides of the top of the tension table support frame (130), the piston rod of the hydraulic cylinder (141) extends downward and is connected to the top of the mounting block (135) on the corresponding side, and the electromagnetic reversing valve assembly is respectively connected to the two hydraulic cylinders (141) and the hydraulic pump station; An electronic level (143) is installed on the top surface of the upper pressure table (110); The pressure sensor (142), electronic level (143), and electromagnetic reversing valve assembly are all electrically connected to the control box. The control box is configured as follows: The pressure value detected by two pressure sensors (142) and the horizontal tilt angle value of the upper pressure platform (110) detected by the electronic level (143) are received in real time. When the pressure difference between the two sides is greater than the first preset threshold, or the horizontal tilt angle of the upper pressure platform (110) is greater than the second preset threshold, an adjustment signal is sent to the electromagnetic reversing valve group to control the extension and retraction of the piston rod of the corresponding hydraulic cylinder (141) until the pressure difference between the two sides is less than the first preset threshold and the horizontal tilt angle of the upper pressure platform (110) is less than the second preset threshold.

6. The device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel as described in claim 1, characterized in that, Also includes: Multiple deburring mechanisms (400) are provided and are installed at intervals on one side of the input end of the tension table mechanism (100). Each deburring mechanism (400) corresponds to a narrow steel bar (500). The deburring mechanism (400) includes: L-shaped mounting bracket (410), protective shell (420), electric telescopic rod (430) and scraper mechanism (440). One end of the L-shaped mounting bracket (410) is mounted on the outer wall of the lower pressure table (120), and the other end extends horizontally away from the lower pressure table (120); The protective shell (420) is disposed in the opening of the L-shaped mounting bracket (410), and the electric telescopic rod (430) is vertically fixed to the bottom surface of the opening of the L-shaped mounting bracket (410), with the top end connected to the protective shell (420). The scraper mechanism (440) is installed inside the protective housing (420).

7. The device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel as described in claim 6, characterized in that, The scraper mechanism (440) includes: The device comprises a C-shaped blade holder (441) and a flexible blade assembly (442). The C-shaped blade holder (441) is installed inside the protective shell (420), and the flexible blade assembly (442) is installed at both ends of the C-shaped blade holder (441). The opening and closing knife holder (441) includes: The first mounting plate (443) and the second mounting plate (444) are symmetrically arranged inside the protective shell (420), and the bottoms of the first mounting plate (443) and the second mounting plate (444) are close to each other; The first drive plate (445) and the second drive plate (446) are respectively disposed on the outside of the first mounting plate (443) and the second mounting plate (444); The first drive board (445), the second drive board (446), the first mounting plate (443), and the second mounting plate (444) are all C-shaped; The first drive plate (445) and the second drive plate (446) of the C type both slide along the outer walls of the first mounting plate (443) and the second mounting plate (444); The first gear (447) and the second gear (448) are fixedly installed on the bottom outer walls of the first mounting plate (443) and the second mounting plate (444), respectively, and mesh with each other; The first mounting rod (449) is connected at one end to the center of the side of the first gear (447) away from the first mounting plate (443), and at the other end is rotatably connected to the inner wall of the protective shell (420); The drive rod (451) is connected at one end to the center of the side of the second gear (448) away from the second mounting plate (444), and at the other end passes through the outer wall of the protective shell (420) and is connected to the drive motor (480), which slides vertically along the inner wall of the L-shaped mounting bracket (410); The scraper mechanism (440) further includes: The rocker arm assembly (460) has two sets, respectively installed between the first mounting plate (443) and the first drive plate (445) and between the second mounting plate (444) and the second drive plate (446); wherein The first mounting plate (443) and the second mounting plate (444) cooperate with the two sets of the swing arm assemblies (460) to drive the first drive plate (445) and the second drive plate (446) to slide on the outer wall of the first mounting plate (443) and the second mounting plate (444).

8. The device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel as described in claim 7, characterized in that, The rocker arm assembly (460) includes: The first swing arm (461) is rotatably connected at one end to the side of the first mounting plate (443) or the second mounting plate (444) near the drive rod (451), and the first swing arm (461) is located on one side of the first mounting rod (449) or the drive rod (451). The second mounting rod (462) is rotatably connected at one end to the inner wall of the protective shell (420); The second swing arm (463) has one end connected to the side of the second mounting rod (462) away from the protective shell (420), and the other end is parallel to the plane where the first mounting plate (443) or the second mounting plate (444) is located; The other end of the first swing arm (461) is hinged to the end of the second swing arm (463) near the second mounting rod (462); The third swing arm (464) is hinged at one end to the end of the second swing arm (463) away from the second mounting rod (462); The third mounting rod (465) is rotatably mounted on the inner wall of the protective shell (420) at one end; The fourth swing arm (466) is rotatably connected at one end to the other end of the third mounting rod (465); The other end of the third swing arm (464) is hinged to the end of the fourth swing arm (466) near the third mounting rod (465); The arc-shaped rod (467) is hinged at one end to the end of the fourth swing rod (466) away from the third mounting rod (465), and the other end is hinged to the outer wall of the top of the first drive plate (445) or the second drive plate (446).

9. The device for eliminating black ink stains from slitting hot-dip galvanized high-strength steel as described in claim 8, characterized in that, The elastic blade assembly (442) includes: A pull rope (452) is wrapped around the outer wall of the drive rod (451) or the first mounting rod (449); The lower cutter head (456) and the upper cutter head (453) are installed on the inner wall of the top of the first drive plate (445) or the second drive plate (446); A hinge plate (454) is disposed on the end wall of the first drive plate (445) or the second drive plate (446); wherein The upper cutter head (453) is hinged to the hinge plate (454) at the mounting end, and the pull rope (452) is connected to the side of the upper cutter head (453) near the hinge plate (454) at the end away from the first mounting rod (449). A tension spring (455) is disposed between the upper cutter head (453) and the lower cutter head (456); The tension spring (455) works in conjunction with the pull rope (452) to pull the upper cutter head (453) toward the lower cutter head (456) when the first mounting rod (449) and the drive rod (451) rotate.

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