A metal plate grinding and polishing device

Abstract

The application provides a metal plate grinding and polishing device, and belongs to the technical field of metal plate grinding. The device comprises a rack, an adjusting frame vertically sliding on the upper end of the rack, two belt conveyors for conveying the plate fixedly installed on the upper end of the rack, the belt conveyors being located between the rack and the adjusting frame, a plurality of grinding rollers rotatably connected in the rack and the adjusting frame, the grinding rollers in the rack vertically corresponding to the grinding rollers in the adjusting frame, air pipes arranged in the rack and the adjusting frame, the air pipes being distributed at intervals with the corresponding grinding rollers in the transverse direction, and conveying rollers rotatably connected to the outer sides of the air pipes. The device can simultaneously complete the grinding of the upper and lower surfaces of the plate, clean the dust on the surface and the assembling hole, and clean the rubber sleeves of the belt conveyor, the grinding roller and the conveying roller.

Description

Technical Field

[0001] This application relates to the field of metal plate grinding technology, specifically to a metal plate grinding and polishing device. Background Technology

[0002] In the processing of metal sheet connectors used in power transmission towers, stringent requirements are placed on structural strength and surface precision. Laser cutting has become the mainstream material cutting method due to its advantages such as high cutting precision, high efficiency, and wide applicability to materials. However, during the laser cutting process, irregular burrs and slag are formed at the cut edge of the sheet metal due to localized high-temperature melting and cooling solidification. These burrs have high hardness, which not only affects the appearance quality of the metal sheet metal, but also leads to problems such as loose fit and reduced connection strength in subsequent assembly and welding processes. They may even scratch operators. Therefore, it is necessary to use specialized grinding and polishing equipment to grind and polish the cut metal sheet metal to remove burrs, improve surface smoothness and flatness, and ensure the quality of subsequent processing and safety of use.

[0003] In existing technologies, the grinding and polishing methods for metal sheets mainly include manual grinding and polishing and automatic grinding and polishing. Manual grinding and polishing relies on operators holding grinding tools to complete the work, which has the disadvantages of low processing efficiency, unstable grinding quality and high labor intensity. It is only suitable for processing small batches of workpieces with special shapes. For flat metal sheet connectors with large quantities and relatively regular shapes used in the processing of power transmission towers, the industry generally uses conveyor belt-type flat polishing and grinding machines for automatic polishing. This type of surface polishing and grinding machine is driven by a power system to rotate grinding rollers, abrasive belts, and other grinding tools at high speed. At the same time, the metal plate is conveyed by a conveyor belt. During the conveying process, the grinding tools come into contact with the surface of the metal plate. Through the cutting action of the abrasive particles, burrs, oxide layers, scratches, and other defects on the surface of the metal plate are removed. At the same time, by changing the grinding tools (such as wool polishing rollers), rough grinding and fine polishing processes can be achieved simultaneously. However, due to the influence of the conveyor belt, the grinding tools are only set above the conveyor belt, and only one side of the metal plate can be ground. After grinding one side, the plate needs to be flipped over manually or by additional equipment, and the grinding operation on the other side is repeated, resulting in low overall grinding efficiency.

[0004] To address the aforementioned issues, targeted improvements have emerged in existing technologies. For example, Chinese invention patent application CN120244712A discloses a grinding device for surface treatment of bearing plates. The core of this device includes a fixed base, a sealing cover, a dual-grinding assembly, and a matching correction and dust collection system. The sealing cover houses a first and second grinder. Through the coordinated drive of a lifting rod and a lifting top rod, simultaneous grinding of both sides of the plate is achieved. The dust collection cover, in conjunction with a vacuum cleaner and dual fans, simultaneously cleans grinding debris and metal powder adhering to the surface of the grinding belt, ensuring effective grinding. This technical solution, through structural optimization, to a certain extent solves the problems of traditional flat grinding and polishing equipment being unable to perform simultaneous double-sided grinding and dust pollution during grinding.

[0005] Although the aforementioned equipment has significantly improved the metal sheet grinding technology, there are still many unresolved defects when grinding power tower connectors. First, to avoid interference between the upper and lower grinders and ensure smooth sheet material transport, the design uses a staggered arrangement of the upper and lower grinding components, which significantly increases the overall grinding stroke of the equipment, prolonging the grinding time of a single workpiece and restricting the improvement of single-cycle grinding efficiency. Moreover, during the grinding of metal materials, the high-speed friction between the grinding wheel and the sheet material generates static electricity. Fine metal debris easily carries static electricity and adheres to the surface of the sheet material and the inner wall of the assembly hole through electrostatic attraction, requiring a separate cleaning process afterward, further increasing processing costs and reducing overall production efficiency. Summary of the Invention

[0006] In view of this, this application provides a metal sheet grinding and polishing device to solve the problem that metal debris is difficult to remove from the pores on the surface of the sheet during grinding.

[0007] To solve the above-mentioned technical problems, this application provides a metal sheet grinding and polishing device, including a frame and an adjusting frame that can slide vertically at the upper end of the frame. Two belt conveyors for conveying the sheet are fixedly installed at the upper end of the frame. The belt conveyors are located between the frame and the adjusting frame. Multiple grinding rollers are rotatably connected inside the frame and the adjusting frame. The grinding rollers inside the frame and the grinding rollers inside the adjusting frame are vertically aligned one-to-one. Air pipes are provided inside the frame and the adjusting frame. The air pipes are spaced apart from the horizontally corresponding grinding rollers. Conveying rollers are rotatably connected to the outer side of each air pipe. A strip-shaped nozzle for air jet is opened on the outer side of the air pipe. Air holes that can communicate with the strip-shaped nozzle are evenly opened on the outer side of the conveying roller.

[0008] By adopting the above technical solution, the belt conveyor provides a stable bearing and conveying path for the metal sheet. The vertically corresponding grinding rollers in the frame and adjusting frame can act on the upper and lower surfaces of the sheet simultaneously, eliminating the need for secondary flipping and grinding, thus increasing grinding efficiency. The air pipe and the perforated conveying roller are coaxially arranged. When the conveying roller rotates, its perforations can periodically connect with the air pipe's slot, reserving a stable channel for high-pressure gas conduction and providing continuous conveying force to the sheet during the grinding process. This structural design not only lays a reliable foundation for subsequent high-pressure air blowing cleaning and cooling functions but also achieves functional linkage and compact layout of various components, significantly improving the overall integration and space utilization of the device and effectively reducing equipment footprint costs.

[0009] Optionally, the outer surface of the conveying roller is fitted with a rubber sleeve, the surface of which is uniformly distributed with conical protrusions, and the rubber sleeve is provided with through holes corresponding to the positions of the air holes.

[0010] By adopting the above technical solutions, the rubber sleeve can increase the friction between the conveying roller and the metal sheet, preventing the sheet from slipping during the conveying process. The conical protrusion further enhances the anti-slip effect. The through-hole design ensures that the high-pressure gas is ejected normally, which does not affect the cleaning function and can also protect the surface of the sheet from being scratched through the buffering effect of the rubber sleeve.

[0011] Optionally, there are three strip-shaped openings on the outside of the trachea, and the three strip-shaped openings on the same outside of the trachea are arranged in a triangular pattern.

[0012] By adopting the above technical solution, the three strip nozzles act on the metal sheet, the belt conveyor, and the grinding roller respectively, so that a single air blowing system can simultaneously complete multiple functions such as sheet cleaning, equipment cleaning, and sheet cooling, thereby improving resource utilization and work efficiency.

[0013] Optionally, both the frame and the adjustment frame are equipped with dust collection hoods. The dust collection port of the dust collection hood is connected to an external vacuum cleaner through a pipe. The grinding roller and conveying roller inside the frame correspond to the position of the bottom dust collection hood, and the grinding roller and conveying roller inside the adjustment frame correspond to the position of the upper dust collection hood.

[0014] By adopting the above technical solution, dust generated during grinding and dust blown out by high-pressure air can be collected in an all-round and comprehensive manner, avoiding dust diffusion and pollution of the working environment. At the same time, it facilitates centralized dust treatment and improves the environmental protection and operational safety of the device.

[0015] Optionally, the inside left side of the adjusting frame is hinged to a tilting frame by a torsion spring. The bottom end of the tilting frame is provided with an inclined surface that can abut against the metal side. Limiting strips are provided on the surface array of the conveyor belt of the belt conveyor on the left side.

[0016] By adopting the above technical solution, the limiting strip achieves the initial positioning of the metal sheet, and the flipping frame continuously squeezes and limits the sheet during the conveying process through the torsion of the torsion spring and the inclined structure, dynamically corrects the skew of the sheet, greatly improves the stability of the sheet conveying and grinding process, and ensures the grinding accuracy.

[0017] Optionally, a distance sensor for detecting the thickness of the metal plate is provided on the left side inside the adjustment frame, and an adjustment component for adjusting the height of the adjustment frame is provided inside the frame.

[0018] By adopting the above technical solution, the distance sensor can acquire and feed back the plate thickness data in real time, providing a precise basis for the adjustment component, making the height adjustment of the adjustment frame more targeted, ensuring that the distance between the upper and lower grinding rollers is adapted to the plate thickness, and ensuring that plates of different thicknesses can be ground properly.

[0019] Optionally, the adjustment assembly includes threaded sleeves rotatably connected to the four corners of the frame. Each of the four bottom corners of the adjustment frame is fixedly provided with a screw that is threadedly connected to the threaded sleeve. The drive motor installed inside the frame can drive the four threaded sleeves to rotate synchronously through a chain, thereby driving the adjustment frame to adjust up and down.

[0020] By adopting the above technical solution, the drive motor drives the four threaded sleeves to rotate synchronously via the chain, which drives the screw and the adjustment frame to rise and fall smoothly, realizes the synchronous displacement of the four corners of the adjustment frame, avoids the deviation of the parallelism of the upper and lower grinding rollers caused by the tilt of the adjustment frame, and improves the spacing adjustment accuracy.

[0021] Optionally, the two belt conveyors inside the frame are connected to the conveying rollers inside the frame via belts, so that the conveying rollers inside the frame and the two belt conveyors can drive synchronously and in the same direction.

[0022] By adopting the above technical solutions, it is ensured that the belt conveyor and the conveying rollers have the same conveying speed and the same direction, thus guaranteeing the continuity and stability of the sheet material conveying.

[0023] Optionally, the frame is equipped with a grinding motor, which can drive the grinding rollers inside the frame to rotate via belt drive, so that the horizontally adjacent grinding rollers rotate synchronously in opposite directions.

[0024] Optionally, the grinding roller inside the frame is connected to the corresponding vertical grinding roller inside the adjusting frame via a synchronous belt. A tensioning shaft is hinged to the outside of the frame via a torsion spring. The tensioning shaft is L-shaped, and a tensioning wheel that can abut against the outside of the synchronous belt is rotatably connected to the outer end of the tensioning shaft. The torsion spring can keep the tensioning wheel in contact with the outer side of the synchronous belt to maintain the normal transmission of the grinding roller.

[0025] By adopting the above technical solution, the lateral adjacent grinding rollers rotate in opposite directions, which can grind the burrs tilted at the edge of the board and the assembly hole in the opposite direction, and completely remove the residual burrs. At the same time, the opposing grinding forces cancel each other out, reducing the displacement of the board caused by the grinding force and improving the grinding quality. The synchronous belt enables the vertical corresponding grinding rollers to rotate in the same direction, avoiding displacement of the upper and lower surfaces of the board due to the opposite rotation of the grinding rollers. Under the action of the torsion spring, the tensioning shaft keeps the tensioning wheel in contact with the synchronous belt, ensuring that the synchronous belt is always in a taut state, preventing slippage, and ensuring the transmission stability and speed consistency of the grinding rollers.

[0026] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0027] 1. The upper and lower surfaces of the metal sheet are polished simultaneously by corresponding upper and lower grinding rollers, which can more thoroughly polish the burrs on the edges of the metal sheet and inside the assembly holes; at the same time, a triangularly distributed strip-shaped high-pressure air blowing structure is adopted to ensure the conveying of the metal sheet while simultaneously cleaning the dust on the surface of the sheet and inside the assembly holes, as well as cleaning the belt conveyor, grinding rollers and conveyor roller rubber sleeves. It also has the function of cooling the sheet during polishing, and can also achieve centralized dust treatment when used with a dust collection component.

[0028] 2. By monitoring the thickness of the sheet metal in real time through a distance sensor, and combining it with an external processor and a threaded transmission mechanism, the automatic drive adjustment frame drives the grinding roller to achieve vertical displacement, thereby completing the adaptive and precise adjustment of the distance between the upper and lower grinding rollers. It can flexibly adapt to metal sheets of different thicknesses and specifications, ensuring that both sides of the sheet metal can be ground evenly, while effectively balancing the grinding force on both sides, thus preventing the sheet metal from shifting due to uneven force.

[0029] 3. The system employs a coordinated limiting structure combining a limiting strip and a torsion spring-driven tilting frame. Initial positioning is achieved by the contact between the end of the sheet metal and the limiting strip. Then, during the sheet metal conveying process, the contact between the inclined surface at the bottom of the tilting frame and the sheet metal, along with the torsion spring force, creates a continuous lateral compressive force, further pressing the sheet metal against one side of the limiting strip. This system can constrain the conveying posture of the sheet metal throughout the process, significantly reducing the probability of skewing during the grinding process, effectively controlling displacement errors, ensuring consistent grinding depth in all areas of the sheet metal, and significantly improving the flatness of the finished product surface and the consistency of grinding quality. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a metal sheet grinding and polishing device according to this application;

[0031] Figure 2 This is a schematic cross-sectional view of the structure on the right side of this application;

[0032] Figure 3 This is a schematic diagram of the radial cross-sectional structure of the trachea in this application;

[0033] Figure 4 This is a schematic diagram of the axial cross-sectional structure of the trachea in this application;

[0034] Figure 5 This is a schematic diagram of the internal left-side cross-sectional structure of this application;

[0035] Figure 6 This is a schematic diagram of the transmission structure of the belt conveyor in this application;

[0036] Figure 7 This is a partial structural diagram of the adjustment component of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Frame; 101. Adjusting frame; 102. Distance sensor; 2. Belt conveyor; 21. Limit bar; 3. Grinding roller; 4. Air pipe; 41. Strip opening; 42. Conveying roller; 421. Air hole; 422. Rubber sleeve; 5. Dust hood; 6. Tilting frame; 61. Inclined surface; 7. Adjusting assembly; 71. Threaded sleeve; 72. Screw; 73. Drive motor; 8. Grinding motor; 9. Tensioning shaft; 91. Tensioning wheel. Detailed Implementation

[0038] The following will be described in conjunction with embodiments of this application. Figures 1-7 The technical solutions of the embodiments of this application are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of this application are within the scope of protection of this application.

[0039] Reference Figure 1 and Figure 2 This embodiment provides a metal sheet grinding and polishing device, including a frame 1, an adjusting frame 101, a grinding roller 3, and a dust collection component. The frame 1, as the load-bearing part of the device, is composed of multiple welded rectangular tubes. Two belt conveyors 2 for conveying the sheet are fixedly installed inside the frame 1. The adjusting frame 101 is installed on the upper end of the frame 1 via an adjusting component 7. Air pipes 4 are arrayed inside both the frame 1 and the adjusting frame 101. Conveying rollers 42 for conveying the sheet are rotatably connected to the outer side of each air pipe 4. The conveying rollers 42 are located between the two belt conveyors 2. The two belt conveyors 2 inside the frame 1 are connected to the conveying rollers 42 inside the frame 1 via belts (see reference). Figure 6 The conveyor roller 42 inside the frame 1 is used to drive synchronously and in the same direction with the two belt conveyors 2. The frame 1 and the adjusting frame 101 are equipped with a grinding component and a dust collection component.

[0040] In use, the metal sheet to be ground is placed on the carrying end of the belt conveyor 2 on the left side of the equipment. The belt conveyor 2 drives the metal sheet to the right. When the metal sheet is transported to the gap between the upper and lower opposing grinding rollers 3, the conveying roller 42, which is rotatably connected to the outside of the air pipe 4, provides a continuous and stable feeding driving force for the metal sheet, causing the upper and lower grinding rollers 3 to uniformly grind the upper and lower surfaces of the metal sheet at the same time. During this process, the matching dust collection component is started at the same time, which can efficiently adsorb and collect the metal dust generated by the grinding operation, effectively avoiding the dust from spreading and affecting the working environment and operators.

[0041] Reference Figure 2 and Figure 3 The air pipes 4 and the corresponding horizontal grinding rollers 3 are distributed at intervals. The outer side of the air pipes 4 has three strip-shaped openings 41 for air jetting, and these three openings 41 are arranged in a triangular pattern. The outer side of the conveying rollers 42 has evenly distributed air holes 421 that can communicate with the strip-shaped openings 41 (see reference). Figure 4 The outer side of the conveying roller 42 is fitted with a rubber sleeve 422. The surface of the rubber sleeve 422 is evenly distributed with conical protrusions, which can reduce the probability of reduced friction due to metal dust adhering to the surface of the rubber sleeve 422. The rubber sleeve 422 is provided with through holes corresponding to the positions of the air holes 421.

[0042] When the grinding operation is carried out, air is continuously supplied to the air pipe 4 from an external air source. The high-pressure gas is discharged through the pre-set strip-shaped opening 41 on the side wall of the air pipe 4. As the metal sheet is fed and conveyed, when the air hole 421 on the outside of the conveying roller 42 is aligned with the strip-shaped opening 41 on the wall of the air pipe 4, the high-pressure gas is discharged in a jet-like manner through the corresponding air hole 421 on the surface of the conveying roller 42.

[0043] The three strip-shaped openings 41 on the outside of the air tube 4 are arranged in a triangular array. The high-pressure airflow ejected from the strip-shaped opening 41 facing the metal plate can quickly blow away the metal dust remaining on the surface of the plate after polishing, and can also strongly push away the fine dust particles adsorbed by electrostatic effect in the assembly holes of the plate. This not only ensures the surface cleanliness of the metal plate after polishing, but also provides an immediate cooling effect on the metal plate during the polishing process, preventing the plate from deforming due to the temperature rise during polishing.

[0044] The other two strip-shaped nozzles 41 are precisely aligned with the working surface of the belt conveyor 2 and the surface of the grinding roller 3, respectively. The high-pressure airflow ejected from them can efficiently clean the dust and impurities adhering to the surface of the belt conveyor 2 and the grinding debris remaining on the surface of the grinding roller 3 (see reference). Figure 2This ensures the grinding precision and surface quality of the metal sheet; at the same time, the high-pressure airflow can also clean the surface of the rubber sleeve 422 on the outside of the conveying roller 42, preventing dust accumulation on the surface of the rubber sleeve 422 from affecting the conveying friction, and ensuring the stability and continuity of the metal sheet feeding and conveying.

[0045] Reference Figure 2 The dust collection assembly includes a dust collection hood 5. Two dust collection hoods 5 are respectively installed inside the frame 1 and the adjustment frame 101. The dust collection port of the dust collection hood 5 is connected to an external vacuum cleaner through a pipe. The grinding roller 3 and the conveying roller 42 inside the frame 1 correspond to the positions of the bottom dust collection hood 5, and the grinding roller 3 and the conveying roller 42 inside the adjustment frame 101 correspond to the positions of the upper dust collection hood 5.

[0046] During operation, the dust hood 5, which is compatible with the equipment, can cover and collect the metal dust blown out by the strip nozzle 41 in all directions. At the same time, the external vacuum cleaner is started simultaneously. Through negative pressure adsorption, the metal dust inside the dust hood 5 is efficiently extracted through the connecting pipe, realizing the centralized collection and unified treatment of grinding dust, effectively avoiding the adverse effects of dust dispersion on the working environment and the operating accuracy of the equipment.

[0047] Reference Figure 2 The inside left side of the adjusting frame 101 is hinged to a tilting frame 6 by a torsion spring. The bottom end of the tilting frame 6 is provided with an inclined surface 61 that can abut against the metal side. The conveyor belt surface array of the belt conveyor 2 on the left side is provided with limit strips 21.

[0048] When feeding the metal sheet, it is placed stably on the conveyor belt surface on the left side of the belt conveyor 2, and one end of the sheet abuts against the preset limiting strip 21 on the surface of the conveyor belt, thereby achieving the initial limiting and positioning of the sheet. When the metal sheet is fed by the belt conveyor 2 until its end abuts against the inclined surface 61 at the bottom of the tilting frame 6, the tilting frame 6 can form a continuous lateral extrusion force on the metal sheet under the torsion drive of the torsion spring, further pressing and positioning the sheet towards the limiting strip 21, greatly reducing the probability of the metal sheet shifting or tilting during the grinding operation, ensuring uniform grinding force on the upper and lower surfaces of the sheet, and effectively improving the final grinding accuracy and surface consistency.

[0049] Reference Figure 2 and Figure 5 The left side of the inner side of the adjusting frame 101 is equipped with a distance sensor 102 for detecting the thickness of the metal plate. The inner side of the frame 1 is equipped with an adjusting assembly 7 for adjusting the height of the adjusting frame 101. The adjusting assembly 7 includes threaded sleeves 71 rotatably connected to the four corners of the frame 1. Each of the four bottom corners of the adjusting frame 101 is fixedly equipped with a screw 72 threadedly connected to the threaded sleeve 71. The drive motor 73 installed inside the frame 1 can simultaneously drive the four threaded sleeves 71 to rotate synchronously via a chain (see reference). Figure 7), used to drive the adjustment frame 101 to adjust up and down.

[0050] During the conveying of metal sheets, the distance sensor 102 accurately monitors the thickness of the metal sheets on the upper surface of the belt conveyor 2 in real time and transmits the collected thickness data to the external processor in real time. After analyzing and calculating the thickness data, the processor automatically sends control commands to the drive motor 73. The drive motor 73 starts and drives the four threaded sleeves 71 to rotate synchronously in the same direction through the chain transmission mechanism. Then, the screws 72 that are threaded with the threaded sleeves 71 drive the adjusting frame 101 to move up and down, realizing the adaptive and precise adjustment of the distance between the upper and lower opposing grinding rollers 3. This ensures that both sides of metal sheets of different thicknesses can be ground evenly, effectively guaranteeing the consistency of grinding quality.

[0051] Reference Figure 5 and Figure 6 The frame 1 is equipped with a grinding motor 8, which can drive the grinding rollers 3 inside the frame 1 to rotate via belt drive, so that the horizontally adjacent grinding rollers 3 rotate synchronously in opposite directions. The grinding rollers 3 inside the frame 1 are connected to the vertically corresponding grinding rollers 3 inside the adjusting frame 101 via a synchronous belt. The outer side of the frame 1 is hinged with a tensioning shaft 9 via a torsion spring. The tensioning shaft 9 is L-shaped. The outer end of the tensioning shaft 9 is rotatably connected to a tensioning wheel 91 that can abut against the outer side of the synchronous belt. When the adjusting frame 101 is adjusted in height, the synchronous belt is always kept in a taut state through the tensioning shaft 9 and the tensioning wheel 91 to maintain the normal transmission of the grinding rollers 3.

[0052] During the grinding operation, the two grinding motors 8 start synchronously and drive the corresponding grinding rollers 3 to rotate synchronously via the belt drive mechanism. The two sets of vertically opposed grinding rollers 3 are connected by synchronous belt drive, which can achieve rotation in the same direction. When grinding the upper and lower surfaces of the metal sheet at the same time, the grinding force on both sides of the sheet can be kept balanced, effectively offsetting the risk of sheet movement caused by uneven grinding force on both sides, and ensuring the stability of the grinding process.

[0053] Meanwhile, the vertically opposed grinding rollers 3 can be driven independently, thereby achieving synchronous reverse rotation between horizontally adjacent grinding rollers 3. In response to the problem that burrs generated on the edge of the board or the edge of the assembly hole during the grinding process are prone to tilting to one side or even getting stuck in the assembly hole, the adjacent grinding rollers 3 rotating in opposite directions can perform secondary grinding on the tilted burrs, effectively removing the residual burrs stuck in the assembly hole, and further improving the grinding accuracy and surface cleanliness of the board.

[0054] The metal sheet to be ground is placed on the upper end of the left belt conveyor 2, so that one end of the sheet abuts against the conveyor belt limit strip 21 to complete the initial limit. After the belt conveyor 2 starts, it conveys the sheet to the right. When the sheet enters the gap between the upper and lower opposing grinding rollers 3, the conveying roller 42 provides the feed driving force, and the grinding mechanism starts simultaneously to grind both sides of the sheet.

[0055] When the end of the plate abuts against the bottom inclined surface 61 of the flipping frame 6, the torsion spring torque drives the flipping frame 6 to press the plate against the limiting strip 21, which helps to limit the plate and reduce the probability of grinding deviation. During the conveying process, the distance sensor 102 monitors the plate thickness in real time and feeds it back to the processor. The processor controls the drive motor 73, which drives the threaded sleeve 71 to rotate synchronously through the chain. With the help of the screw 72 and the threaded sleeve 71, the adjustment frame 101 is driven to rise and fall, so as to achieve precise adjustment of the spacing between the grinding rollers 3.

[0056] The grinding motor 8 drives the grinding roller 3 to rotate via belt drive. The vertically opposed grinding rollers 3 rotate in the same direction via synchronous belt to balance the grinding force and prevent the plate from shifting. The vertical grinding roller 3 can be driven independently to make the horizontally adjacent grinding rollers 3 rotate in opposite directions to remove burrs that have been poured onto the edge of the plate or into the assembly hole.

[0057] During simultaneous grinding, an external air source supplies air. When the air holes 421 of the conveyor roller 42 are aligned with the strip openings 41 of the air pipe 4, high-pressure air is ejected. The triangularly distributed strip openings 41 clean the dust from the board, the conveyor, and the grinding roller 3, and cool them down. At the same time, the dust collection component is activated, the dust collection hood 5 collects the dust, and the external vacuum cleaner uses negative pressure to extract the dust for centralized processing.

[0058] The implementation principle of a metal sheet grinding and polishing device according to an embodiment of this application is as follows:

[0059] In use, the metal sheet to be ground is first placed on the upper end of the left-side belt conveyor 2, with one end of the metal sheet abutting against the limiting strip 21 on the surface of the conveyor belt of belt conveyor 2, thus achieving initial limiting of the metal sheet. Subsequently, belt conveyor 2 starts and conveys the metal sheet to the right. When the metal sheet is conveyed to the gap between the upper and lower corresponding grinding rollers 3, the conveying roller 42 provides continuous conveying driving force for the metal sheet, and at the same time, the grinding mechanism starts, and the upper and lower surfaces of the metal sheet are simultaneously ground by the upper and lower corresponding grinding rollers 3.

[0060] When the metal sheet is conveyed to one end and comes into contact with the inclined surface 61 at the bottom of the flipping frame 6, the flipping frame 6 will further press the metal sheet towards the limiting strip 21 under the torsion of the torsion spring. Through the synergistic effect of the flipping frame 6 and the limiting strip 21, the probability of the metal sheet becoming skewed during the grinding process is greatly reduced, and the grinding effect is further improved.

[0061] During the conveying of metal sheets, the distance sensor 102 monitors the thickness of the metal sheets on the upper surface of the belt conveyor 2 in real time and feeds back the monitored thickness data to the external processor in real time. After receiving the data, the external processor processes and analyzes it, and controls the drive motor 73 to work based on the analysis results. The drive motor 73 drives the four threaded sleeves 71 to rotate synchronously through the chain. Since the screw 72 is threadedly connected to the threaded sleeves 71, the rotation of the threaded sleeves 71 is converted into the linear lifting motion of the screw 72, which in turn drives the adjusting frame 101 to move up and down, so as to achieve precise adjustment of the distance between the corresponding upper and lower grinding rollers 3, ensuring that the front and back sides of metal sheets of different thicknesses can be ground in place.

[0062] During the grinding operation, the two grinding motors 8 work synchronously, driving the corresponding grinding rollers 3 to rotate via belt drive. At the same time, the two vertically corresponding grinding rollers 3 are connected by synchronous belt drive, so that the two vertically corresponding grinding rollers 3 rotate in the same direction, thereby avoiding displacement of the metal sheet when the upper and lower surfaces are subjected to grinding force at the same time, ensuring grinding stability. In addition, the vertically corresponding grinding rollers 3 can be driven independently, so that the two horizontally adjacent grinding rollers 3 can achieve synchronous reverse rotation. When the burrs on the edge of the metal sheet or the edge of the assembly hole tilt to one side under the grinding action of the grinding rollers 3, the adjacent reverse rotating grinding rollers 3 can effectively remove some of the burrs that have tilted into the assembly hole, improving the grinding accuracy.

[0063] Simultaneously with the grinding operation, an external air source continuously supplies air into the air pipe 4. After being transported through the air pipe 4, the gas is ejected through the strip-shaped opening 41 on its outer side. Since the conveying roller 42 has an air hole 421 on its outer side, as the metal sheet is conveyed, when the air hole 421 on the outer side of the conveying roller 42 corresponds to the position of the strip-shaped opening 41 of the air pipe 4, high-pressure gas is ejected from the air hole 421 on the surface of the conveying roller 42. The three strip-shaped openings 41 on the outside of the air pipe 4 are arranged in a triangle. The high-pressure gas ejected from the strip-shaped opening 41 closest to the metal plate can clean the dust remaining on the surface of the metal plate during the grinding process, blow out the metal dust adsorbed by electrostatics inside the assembly holes of the metal plate, and also cool down the metal plate that has risen in temperature during the grinding process. The other two strip-shaped openings 41 correspond to the positions of the belt conveyor 2 and the grinding roller 3, respectively. The high-pressure gas ejected from them can clean the metal dust adhering to the surface of the belt conveyor 2 and the surface of the grinding roller 3, and also clean the surface of the rubber sleeve 422 on the outer side of the conveyor roller 42. This ensures both the grinding quality of the metal plate and the normal conveying of the metal plate.

[0064] At the same time, the dust collection components are activated simultaneously. The dust collection hood 5 can effectively collect the metal dust blown out of the strip nozzle 41 and the dust directly generated during the grinding operation. The external vacuum cleaner forms a negative pressure through the pipe to quickly extract the metal dust collected inside the dust collection hood 5, realizing the centralized collection and subsequent treatment of grinding dust, and avoiding dust diffusion that pollutes the environment and affects the normal operation of the equipment.

[0065] Furthermore, in the description of this application, the terms "installation", "connection", "linking", and "setting" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

Claims

1. A metal sheet grinding and polishing device, comprising a frame and an adjusting frame that can slide vertically at the upper end of the frame, wherein two belt conveyors for conveying the sheet are fixedly installed at the upper end of the frame, the belt conveyors being located between the frame and the adjusting frame, characterized in that: Multiple grinding rollers are rotatably connected inside the frame and the adjusting frame. The grinding rollers inside the frame and the grinding rollers inside the adjusting frame are vertically aligned one-to-one. Air pipes are installed inside the frame and the adjusting frame. The air pipes are spaced apart from the horizontally corresponding grinding rollers. Conveying rollers are rotatably connected to the outside of the air pipes. The outer side of the air pipes has a strip-shaped opening for air jetting. The outer side of the conveying rollers has evenly distributed air holes that can communicate with the strip-shaped openings. The outer side of the conveying roller is covered with a rubber sleeve. The surface of the rubber sleeve is evenly distributed with conical protrusions, and the rubber sleeve is provided with through holes corresponding to the positions of the air holes. There are three strip-shaped openings on the outside of the trachea, and the three strip-shaped openings on the outside of the same trachea are arranged in a triangle. The two belt conveyors inside the frame are connected to the conveyor rollers inside the frame via belts, so that the conveyor rollers inside the frame can drive synchronously and in the same direction as the two belt conveyors. The machine frame is equipped with a grinding motor, which can drive the grinding rollers inside the machine frame to rotate via belt drive, so that the adjacent grinding rollers rotate synchronously in opposite directions. The grinding rollers inside the frame are connected to the corresponding vertical grinding rollers inside the adjusting frame via a synchronous belt. A tensioning shaft is hinged to the outside of the frame via a torsion spring. The tensioning shaft is L-shaped, and a tensioning wheel is rotatably connected to the outer end of the tensioning shaft, which can abut against the outer side of the synchronous belt. The torsion spring ensures that the tensioning wheel is always in contact with the outer side of the synchronous belt, thus maintaining the normal transmission of the grinding rollers.

2. The metal sheet grinding and polishing device according to claim 1, characterized in that: Both the frame and the adjustment frame are equipped with dust collection hoods. The dust collection port of the dust collection hood is connected to an external vacuum cleaner through a pipe. The grinding roller and conveying roller inside the frame correspond to the position of the bottom dust collection hood, and the grinding roller and conveying roller inside the adjustment frame correspond to the position of the top dust collection hood.

3. The metal sheet grinding and polishing device according to claim 1, characterized in that: The inside left side of the adjustment frame is hinged to a tilting frame by a torsion spring. The bottom end of the tilting frame is provided with an inclined surface that can abut against the metal side. The conveyor belt surface array of the left belt conveyor is provided with limit strips.

4. The metal sheet grinding and polishing device according to claim 1, characterized in that: The inside left side of the adjustment frame is equipped with a distance sensor for detecting the thickness of the metal plate, and the inside of the frame is equipped with an adjustment component for adjusting the height of the adjustment frame.

5. The metal sheet grinding and polishing device according to claim 4, characterized in that: The adjustment assembly includes threaded sleeves that are rotatably connected to the four corners of the frame. Each of the four bottom corners of the adjustment frame is fixedly provided with a screw that is threadedly connected to the threaded sleeve. The drive motor installed inside the frame can drive the four threaded sleeves to rotate synchronously through a chain, thereby driving the adjustment frame to adjust up and down.

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