A plate surface polishing machine based on a photoelectric probe

Abstract

The application discloses a plate surface polishing machine based on a photoelectric probe and belongs to the technical field of plate polishing equipment. The plate surface polishing machine based on the photoelectric probe comprises a fixed base, a supporting and conveying mechanism is fixedly installed at the top of the fixed base, and a conveying driving mechanism is installed at the rear end of the supporting and conveying mechanism. A plate limiting and adjusting mechanism is installed at the top front end of the supporting and conveying mechanism, a photoelectric detection mechanism is installed at one side of the top of the supporting and conveying mechanism, a supporting frame is fixedly connected to the center position of the rear end of the top of the fixed base, and an automatic polishing mechanism is installed on the supporting frame. The photoelectric detection mechanism and the automatic polishing mechanism are linked and controlled, selective self-adaptive polishing according to the actual state of a plate surface is realized, the polishing mode avoids excessive polishing of a non-protruding area and ensures effective removal of a protruding area, polishing quality and material utilization rate are greatly improved, and overall machining efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of plate polishing equipment, specifically relating to a plate surface polishing machine based on a photoelectric probe. Background Technology

[0002] Polishing is an important process for refining the surface of metal sheets, wood sheets, and other materials. It is widely used in machinery manufacturing, furniture manufacturing, and electronic component processing. As the manufacturing industry continues to demand higher surface quality from its products, the polishing process for sheet materials is developing towards higher precision, higher efficiency, and automation.

[0003] During the forming and processing of sheet metal, burrs, particles, weld points, and other protruding defects often remain on the surface, resulting in an uneven surface that fails to meet subsequent usage requirements. Therefore, polishing equipment is needed to polish the sheet metal surface to remove surface defects and improve surface flatness and smoothness. Currently, existing sheet metal polishing equipment mainly suffers from the following problems: First, most existing polishing equipment relies on manual visual inspection or simple online detection methods to determine the presence of defects on the sheet metal surface, resulting in low detection efficiency and poor accuracy, making it difficult to meet the needs of continuous industrial production. Second, the polishing process lacks specificity. The abrasive wheel polishing equipment used in existing technologies, due to the limited size of the abrasive wheel, requires back-and-forth grinding to complete the processing of the entire sheet metal, which not only results in low processing efficiency but also poor processing accuracy, often producing slight step-like defects on the surface of the processed sheet metal. Finally, most existing sheet metal grinding and polishing machines are not easy to adjust, often requiring manual replacement of grinding or polishing discs for different processing tasks, which is cumbersome. At the same time, existing equipment can usually only process a single type of sheet metal. When the width of the sheet metal changes, different polishing equipment needs to be replaced, increasing equipment costs and space occupation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a plate surface polishing machine based on photoelectric probe.

[0005] The technical solution adopted to solve the above technical problems is: a plate surface polishing machine based on photoelectric probe, including a fixed base, a support conveying mechanism for conveying the plate to be processed is fixedly installed on the top of the fixed base, and a conveying drive mechanism for driving it to work is installed at the rear end of the support conveying mechanism.

[0006] The top front end of the support conveying mechanism is equipped with a plate limiting adjustment mechanism, and one side of the top of the support conveying mechanism is equipped with a photoelectric detection mechanism for detecting the protrusion state of the plate to be processed.

[0007] A support frame is fixedly connected to the center of the top rear end of the fixed base, and an automatic polishing mechanism for polishing the surface of the material to be processed is installed on the support frame.

[0008] Furthermore, the supporting conveying mechanism includes a front bracket and a rear bracket respectively fixed to the front and rear ends of the top of the fixed base, and a plurality of evenly distributed conveying rollers are rotatably connected between the front bracket and the rear bracket.

[0009] Through the above technical solution, the supporting conveying mechanism is used to provide a stable conveying channel for the sheet material to be processed. The front support and the rear support are respectively fixed to the front end and the rear end of the top of the fixed base by bolts. Multiple conveying rollers are rotatably connected between the front support and the rear support. The surface of each conveying roller can be covered with an anti-slip rubber layer to increase the friction between it and the sheet material to be processed and prevent the sheet material from slipping during the conveying process.

[0010] Furthermore, the rear support has a groove at the top front end, and multiple evenly distributed rear limit rollers are rotatably connected to the bottom of the groove. The rolling direction of the rear limit rollers is consistent with the conveying direction of the material to be processed. The top of the rear limit rollers is slightly lower than the top plane of the material to be processed. When the material to be processed is placed on the conveying roller shaft, the rear edge of the material to be processed abuts against the multiple rear limit rollers. The rear limit rollers play a limiting and guiding role on the rear edge of the material to be processed. At the same time, when the material undergoes a small displacement in the front-back direction relative to the rear support, the rear limit rollers reduce resistance through rolling friction, preventing the edge of the material from being scratched.

[0011] Furthermore, the conveying drive mechanism includes synchronous pulleys fixed to the rear ends of multiple conveying roller shafts. The rear end of the rear support is also equipped with multiple sets of evenly distributed limiting pulleys, with two limiting pulleys in each set. Each set of limiting pulleys is located between two adjacent synchronous pulleys. The multiple synchronous pulleys are connected synchronously. A motor bracket is fixedly connected to one side of the top rear end of the fixed base. A first servo motor is installed on the motor bracket. The output shaft of the first servo motor is fixedly connected to the rear end of the outermost conveying roller shaft.

[0012] Through the above technical solution, the conveying drive mechanism is used to drive all conveying rollers to rotate synchronously, so as to achieve uniform conveying of the sheet material to be processed. Multiple synchronous wheels are fixedly installed at the rear ends of multiple conveying rollers, and each synchronous wheel is coaxially fixedly connected to the corresponding conveying roller. The synchronous wheel rotates synchronously with the conveying roller. Multiple sets of evenly distributed limit wheels are also installed at the rear end of the rear support. Each limit wheel is rotatably connected to the rear end face of the rear support through a wheel axle. The axis of the limit wheel is set in the horizontal direction and parallel to the axis of the conveying roller. The synchronous belt is wrapped around the multiple synchronous wheels and the multiple limit wheels in sequence. Specifically, the synchronous belt passes over the top of the first synchronous wheel, then passes downward between the two limit wheels in the first wheel set, and then passes upward over the second synchronous wheel. Above, and so on, the function of the limit wheel is to change the winding path of the synchronous belt, so that there is a sufficient wrap angle between the synchronous belt and each synchronous pulley, ensuring the reliability and synchronization of power transmission, while keeping the synchronous belt in an appropriate tension at all times; furthermore, the first servo motor is fixedly mounted on the motor bracket, and the output shaft of the first servo motor is fixedly connected to the rear end of the outermost conveyor roller shaft through a coupling. During operation, the first servo motor drives the outermost conveyor roller shaft to rotate, and the conveyor roller shaft transmits power to the synchronous pulleys on all other conveyor roller shafts through the synchronous pulleys and synchronous belt on it, thereby realizing the synchronous rotation of all conveyor roller shafts in the same direction. By controlling the speed of the first servo motor, the conveying speed of the material to be processed can be precisely adjusted.

[0013] Furthermore, the plate limiting adjustment mechanism includes an adjusting bracket slidably mounted on the top of the front bracket. The rear end of the adjusting bracket is fixedly connected to multiple evenly distributed mounting seats. Each mounting seat is rotatably connected to a front limiting roller. The front end of the adjusting bracket is fixedly connected to multiple adjusting plates. Each adjusting plate has a through-type elongated guide groove, and each guide groove is fitted with a locking screw.

[0014] Through the above technical solution, the plate limiting adjustment mechanism is used to limit the front side of the plate to be processed, and cooperates with the rear limiting roller to jointly limit the position of the plate to be processed in the width direction, preventing the plate from shifting laterally during the conveying process; the adjusting bracket can slide relative to the front bracket in the front-back direction, and multiple evenly distributed mounting seats are fixedly connected to the rear end of the adjusting bracket. Each mounting seat is rotatably connected to the front limiting roller. The rolling direction of the front limiting roller is consistent with the conveying direction of the plate to be processed, and the top of the front limiting roller is also slightly higher than the top surface of the plate to be processed. When the plate to be processed is placed on the conveying roller shaft, the front edge of the plate to be processed abuts against the multiple front limiting rollers. On the rollers, the front limiting rollers serve to limit and guide the front edge of the material to be processed. Furthermore, multiple adjusting plates are fixedly connected to the front end of the adjusting bracket. Each adjusting plate has a through-type elongated guide groove that extends in the front-back direction. Each guide groove is equipped with a locking screw, which passes through the guide groove and is screwed into a threaded hole at the top of the front bracket. When it is necessary to adjust the position of the front limiting rollers, loosen the locking screws, push the adjusting bracket in the front-back direction to the desired position, and then tighten the locking screws again. In this way, the distance between the front limiting rollers and the rear limiting rollers can be adjusted to accommodate materials of different widths to be processed.

[0015] Furthermore, the photoelectric detection mechanism includes a rear probe installed on one side of the rear end of the rear bracket, and a mounting block is fixedly installed on one side of the front end of the front bracket, on which a front probe matching the rear probe is installed.

[0016] Through the above technical solution, the photoelectric detection mechanism is used to detect the surface protrusion status of the material to be processed before polishing, and to provide data basis for the polishing scheme of the automatic polishing mechanism; the rear probe is a photoelectric sensor, specifically a laser displacement sensor or an infrared ranging sensor. The rear probe is installed on the rear end face of the rear bracket, with its detection end facing forward. The front probe is installed on the mounting block. The type of the front probe is the same as that of the rear probe, and the detection end of the front probe faces backward.

[0017] Furthermore, the central axes of the front probe and the rear probe are located on the same axis.

[0018] Through the above technical solution, the axis extends horizontally in the front-to-back direction, and the height of the axis is adapted to the height of the upper surface of the material to be processed; the distance between the front probe and the rear probe is slightly greater than the maximum width of the material to be processed, ensuring that the material to be processed can pass between them; during operation, the material to be processed is conveyed in a fixed direction, passing through the detection areas of the front probe and the rear probe in sequence. When the front probe detects that the front edge of the material has arrived, a timing signal is triggered; when the rear probe detects that the rear edge of the material has left, a termination signal is triggered; during the period when the front probe and the rear probe are simultaneously blocked by the material, the front probe and the rear probe continuously detect the height change of the upper surface of the material; when there is a protrusion on the surface of the material, the distance value detected by the front probe and / or the rear probe will change abruptly; by comparing and analyzing the detection data of the front probe and the rear probe, the position and height of the protrusion on the surface of the material can be accurately determined, and this data is transmitted to the control system to provide a control basis for the automatic polishing mechanism; since the central axes of the front probe and the rear probe are located on the same axis, their detection data can corroborate and supplement each other, improving the accuracy and reliability of the detection.

[0019] Furthermore, the automatic polishing mechanism includes a servo cylinder fixed to the center of the top of the support frame. A polishing bracket is fixedly connected to the bottom end of the piston rod of the servo cylinder. A polishing wheel is rotatably connected to the bottom of the polishing bracket. A second servo motor is installed at the rear end of the top of the polishing bracket. A transmission wheel is fixedly installed at the output end of the second servo motor and the rear end of the polishing wheel. A transmission belt is installed between the two transmission wheels.

[0020] Through the above technical solution, the automatic polishing mechanism is used to selectively and adaptively polish the surface of the material to be processed based on the detection results of the photoelectric detection mechanism. A servo cylinder is fixedly installed at the center of the top of the support frame, possessing precise position and speed control functions. Its piston rod extends downwards vertically. The servo cylinder is connected to an external air source via an air pipe, and the extension and retraction of the piston rod are controlled by a solenoid valve and a servo controller, allowing precise control of the extension length and speed. A polishing bracket is fixedly connected to the bottom end of the servo cylinder piston rod, and can rise and fall synchronously with the piston rod. The polishing bracket has an inverted U-shaped or portal frame structure, with its two side walls extending downwards. The polishing wheel is rotatably connected to the bottom of the polishing bracket. Specifically, the two ends of the polishing wheel's shaft are rotatably connected to the two side walls of the polishing bracket via bearings. The axis of the polishing wheel is horizontally set in the front-to-back direction, and the bottom end of the polishing wheel is lower than the bottom end of the polishing bracket. When the polishing bracket descends, the bottom surface of the polishing wheel contacts the upper surface of the material to be processed, achieving the polishing operation. The polishing wheel can be a flap wheel, a grinding wheel, or a polishing cloth wheel; the specific type and grit of the polishing wheel can be selected according to the material of the board and the polishing requirements. A second servo motor is installed at the rear end of the top of the polishing bracket. The second servo motor drives the polishing wheel to rotate at high speed through a transmission wheel and belt. By controlling the speed of the second servo motor, the rotation speed of the polishing wheel can be adjusted to adapt to different polishing process requirements. During operation, the servo cylinder controls the lifting height of the polishing bracket based on the detection data from the photoelectric detection mechanism. When there is no protrusion at the current polishing position of the board to be processed, the piston rod of the servo cylinder extends to the first height position, causing the polishing wheel to contact the board surface with the first pressure for polishing. When there is a protrusion at the current polishing position of the board to be processed, the piston rod of the servo cylinder extends further to the second height position, causing the polishing wheel to contact the protruding position on the board surface with the second pressure for focused polishing of the protrusion, in order to remove the protrusion and make the area flush with the surrounding surface. After the protrusion is polished away, the piston rod of the servo cylinder retracts to the first height position, restoring normal polishing pressure.

[0021] The beneficial effects of the present invention are as follows: (1) By setting up a photoelectric detection mechanism, the present invention utilizes two photoelectric sensors, front and rear probes, to work together and detect the height change of the upper surface of the board in real time during the board conveying process. When there is a protrusion on the board surface, the distance value detected by the probe will change abruptly. The control system can accurately calculate the front and rear position and left and right position of the protrusion on the board surface and the height of the protrusion, providing accurate data basis for subsequent adaptive polishing; (2) By setting up a photoelectric detection mechanism, the present invention utilizes two photoelectric sensors, front and rear probes, to work together and detect the height change of the upper surface of the board in real time during the board conveying process. When there is a protrusion on the board surface, the distance value detected by the probe will change abruptly. The control system can accurately calculate the front and rear position and left and right position of the protrusion on the board surface and the height of the protrusion, providing accurate data basis for subsequent adaptive polishing; (3) By setting up a board limit adjustment mechanism, the present invention utilizes the sliding cooperation between the adjustment bracket and the front bracket and the locking effect of the locking screw to conveniently adjust the distance between the front limit roller and the rear limit roller, thereby adapting to different widths of boards to be processed. The operation is simple and quick, and multiple specifications of boards can be processed without changing the equipment, reducing equipment costs and space occupation. Attached Figure Description

[0022] Figure 1 This is a first-view structural diagram of the present invention;

[0023] Figure 2 This is a second-view structural diagram of the present invention;

[0024] Figure 3 This is the front view of the present invention;

[0025] Figure 4 This is the right view of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the plate limiting adjustment mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the automatic polishing mechanism of the present invention;

[0028] Figure 7 yes Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 8 yes Figure 1 A magnified view of a section at point B.

[0030] Reference numerals: 1. Fixed base; 2. Supporting conveying mechanism; 201. Front support; 202. Rear support; 203. Conveying roller shaft; 204. Rear limit roller; 3. Conveying drive mechanism; 301. Synchronous pulley; 302. Limit roller; 303. Synchronous belt; 304. Motor support; 305. First servo motor; 4. Plate limit adjustment mechanism; 401. Adjusting support; 402. Mounting base; 403. Front limit roller; 404. Adjusting plate; 405. Guide groove; 406. Locking screw; 5. Photoelectric detection mechanism; 501. Rear probe; 502. Mounting block; 503. Front probe; 6. Support frame; 7. Automatic polishing mechanism; 701. Servo cylinder; 702. Polishing support; 703. Polishing wheel; 704. Second servo motor; 705. Transmission wheel; 706. Transmission belt; 8. Plate to be processed. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] like Figures 1-8 As shown, this embodiment of a plate surface polishing machine based on a photoelectric probe includes a fixed base 1. A support conveying mechanism 2 for conveying the plate to be processed 8 is fixedly installed on the top of the fixed base 1. The support conveying mechanism 2 includes a front bracket 201 and a rear bracket 202 respectively fixed to the front and rear ends of the top of the fixed base 1. A plurality of evenly distributed conveying rollers 203 are rotatably connected between the front bracket 201 and the rear bracket 202. The support conveying mechanism 2 is used to provide a stable conveying channel for the plate to be processed 8. The front bracket 201 and the rear bracket 202 are respectively fixedly connected to the front end and the rear end of the top of the fixed base 1 by bolts. The plurality of conveying rollers 203 are rotatably connected between the front bracket 201 and the rear bracket 202. The surface of each conveying roller 203 can be covered with an anti-slip rubber layer to increase the friction between it and the plate to be processed 8 and prevent the plate from slipping during the conveying process.

[0033] In this embodiment, a groove is provided at the top front end of the rear support 202, and a plurality of evenly distributed rear limit rollers 204 are rotatably connected to the bottom of the groove. The rolling direction of the rear limit rollers 204 is consistent with the conveying direction of the plate 8 to be processed. The top of the rear limit rollers 204 is slightly lower than the top plane of the plate 8 to be processed. When the plate 8 to be processed is placed on the conveying roller shaft 203, the rear edge of the plate 8 to be processed abuts against the plurality of rear limit rollers 204. The rear limit rollers 204 play a limiting and guiding role on the rear edge of the plate 8 to be processed. At the same time, when the plate undergoes a small displacement in the front-back direction relative to the rear support 202, the rear limit rollers 204 reduce resistance through rolling friction to prevent the edge of the plate from being scratched.

[0034] Regarding the transmission drive mechanism 3, refer to... Figure 1 , Figure 5 and Figure 7 The rear end of the supporting conveying mechanism 2 is equipped with a conveying drive mechanism 3 for driving its operation. The conveying drive mechanism 3 includes synchronous pulleys 301 fixed to the rear ends of multiple conveying roller shafts 203. Multiple sets of evenly distributed limiting pulleys 302 are also installed at the rear end of the rear support 202. Each set of limiting pulleys 302 consists of two pulleys, and each set of limiting pulleys 302 is located between two adjacent synchronous pulleys 301. A synchronous belt 303 connects the multiple synchronous pulleys 301. A motor bracket 304 is fixedly connected to one side of the top rear end of the fixed base 1. A first servo motor 305 is mounted on the motor bracket 304. The output shaft of the first servo motor 305 is fixedly connected to the rear end of the outermost conveying roller shaft 203. The conveying drive mechanism 3 drives all conveying roller shafts 203 to rotate synchronously, thereby achieving uniform speed conveying of the sheet material 8 to be processed. Multiple synchronous pulleys 301 are respectively fixedly installed at the rear ends of multiple conveying roller shafts 203. Each synchronous pulley 301 is connected to its corresponding conveying roller shaft. The roller shaft 203 is coaxially fixedly connected, and the synchronous pulley 301 rotates synchronously with the conveyor roller shaft 203. Multiple sets of evenly distributed limiting pulleys 302 are also installed at the rear end of the rear support 202. Each limiting pulley 302 is rotatably connected to the rear end face of the rear support 202 via an axle. The axis of the limiting pulley 302 is set horizontally and parallel to the axis of the conveyor roller shaft 203. The synchronous belt 303 sequentially wraps around the multiple synchronous pulleys 301 and the multiple limiting pulleys 302. Specifically, the synchronous belt 303 passes over the first synchronous pulley 301, then downwards between the two limiting pulleys 302 in the first pulley set, then upwards over the second synchronous pulley 301, and so on. The function of the limiting pulleys 302 is to change the winding path of the synchronous belt 303, ensuring sufficient wrap angle between the synchronous belt 303 and each synchronous pulley 301, guaranteeing the reliability and synchronicity of power transmission, while maintaining appropriate tension on the synchronous belt 303 at all times.

[0035] In this embodiment, the first servo motor 305 is fixedly mounted on the motor bracket 304. The output shaft of the first servo motor 305 is fixedly connected to the rear end of the outermost conveyor roller shaft 203 through a coupling. During operation, the first servo motor 305 drives the outermost conveyor roller shaft 203 to rotate. The conveyor roller shaft 203 transmits power to the synchronous pulleys 301 on all other conveyor roller shafts 203 through the synchronous pulleys 301 and synchronous belts 303, thereby realizing the synchronous rotation of all conveyor roller shafts 203 in the same direction. By controlling the rotation speed of the first servo motor 305, the conveying speed of the material to be processed 8 can be precisely adjusted.

[0036] Regarding the plate limit adjustment mechanism 4, please refer to... Figures 1-5 The top front end of the supporting conveying mechanism 2 is equipped with a plate limiting adjustment mechanism 4. The plate limiting adjustment mechanism 4 includes an adjustment bracket 401 slidably mounted on the top of the front bracket 201. The rear end of the adjustment bracket 401 is fixedly connected to multiple evenly distributed mounting seats 402. Each mounting seat 402 is rotatably connected to a front limiting roller 403. The front end of the adjustment bracket 401 is fixedly connected to multiple adjustment plates 404. Each adjustment plate 404 has a through-type elongated guide groove 405. Each guide groove 405 is equipped with a locking screw 406. The plate limiting adjustment mechanism 4 is used to limit the front side of the plate 8 to be processed. It cooperates with the rear limiting roller 204 to jointly limit the width of the plate 8 to be processed. The position of the plate in the front-back direction is to prevent the plate from shifting laterally during the conveying process. The adjusting bracket 401 can slide relative to the front bracket 201 in the front-back direction. The rear end of the adjusting bracket 401 is fixedly connected to multiple evenly distributed mounting seats 402. Each mounting seat 402 is rotatably connected to a front limiting roller 403. The rolling direction of the front limiting roller 403 is consistent with the conveying direction of the plate 8 to be processed. The top of the front limiting roller 403 is also slightly higher than the top surface of the plate 8 to be processed. When the plate 8 to be processed is placed on the conveying roller shaft 203, the front edge of the plate 8 to be processed abuts against the multiple front limiting rollers 403. The front limiting rollers 403 play a limiting and guiding role on the front edge of the plate 8 to be processed.

[0037] In this embodiment, the front end of the adjusting bracket 401 is fixedly connected to multiple adjusting plates 404. Each adjusting plate 404 has a through-type elongated guide groove 405 extending in the front-rear direction. Each guide groove 405 is equipped with a locking screw 406. The locking screw 406 passes through the guide groove 405 and is screwed into the threaded hole at the top of the front bracket 201. When it is necessary to adjust the position of the front limiting roller 403, loosen the locking screw 406, push the adjusting bracket 401 in the front-rear direction to the desired position, and then tighten the locking screw 406 again. In this way, the distance between the front limiting roller 403 and the rear limiting roller 204 can be adjusted to accommodate different widths of the sheet metal 8 to be processed.

[0038] Regarding photoelectric testing organization 5, see reference 5. Figure 1 , Figure 7 and Figure 8 A photoelectric detection mechanism 5 for detecting the protrusion state of the surface of the plate 8 to be processed is installed on one side of the top of the supporting conveying mechanism 2. The photoelectric detection mechanism 5 includes a rear probe 501 installed on one side of the rear end of the rear bracket 202, and a mounting block 502 fixedly installed on one side of the front end of the front bracket 201. A front probe 503 matching the rear probe 501 is installed on the mounting block 502. The photoelectric detection mechanism 5 is used to detect the protrusion state of the surface of the plate 8 to be processed before polishing, and to provide data basis for the polishing scheme of the automatic polishing mechanism 7. The rear probe 501 is a photoelectric sensor, specifically a laser displacement sensor or an infrared ranging sensor. The rear probe 501 is installed on the rear end face of the rear bracket 202, and its detection end faces forward. The front probe 503 is installed on the mounting block 502. The front probe 503 is of the same type as the rear probe 501, and its detection end faces backward.

[0039] In this embodiment, the central axes of the front probe 503 and the rear probe 501 are located on the same axis, which extends horizontally in the front-rear direction, and the height of this axis is adapted to the height of the upper surface of the workpiece 8 to be processed; the distance between the front probe 503 and the rear probe 501 is slightly larger than the maximum width of the workpiece 8 to be processed, ensuring that the workpiece 8 to be processed can pass between them; during operation, the workpiece 8 to be processed is conveyed in a fixed direction, passing through the detection areas of the front probe 503 and the rear probe 501 in sequence. When the front probe 503 detects that the front edge of the workpiece has arrived, a timing signal is triggered; when the rear probe 501 detects that the rear edge of the workpiece has left, a termination signal is triggered; when the front probe 503 and the rear probe 501... During the period when both probes 01 and 501 are simultaneously obscured by the plate, the front probe 503 and the rear probe 501 continuously detect the height change of the upper surface of the plate. When there are protrusions (such as weld points, burrs, particles, etc.) on the plate surface, the distance value detected by the front probe 503 or the rear probe 501 will change abruptly. By comparing and analyzing the detection data of the front probe 503 and the rear probe 501, the position (including front and rear position and left and right position) and height of the protrusions on the plate surface can be accurately determined, and these data are transmitted to the control system to provide control basis for the automatic polishing mechanism 7. Since the central axes of the front probe 503 and the rear probe 501 are located on the same axis, their detection data can corroborate and supplement each other, improving the accuracy and reliability of the detection.

[0040] Regarding the automatic polishing mechanism 7, please refer to... Figures 1-4 as well as Figure 6A support frame 6 is fixedly connected to the center of the top rear end of the fixed base 1. An automatic polishing mechanism 7 for polishing the surface of the material to be processed 8 is installed on the support frame 6. The automatic polishing mechanism 7 includes a servo cylinder 701 fixed to the center of the top of the support frame 6. A polishing bracket 702 is fixedly connected to the bottom end of the piston rod of the servo cylinder 701. A polishing wheel 703 is rotatably connected to the bottom of the polishing bracket 702. A second servo motor 704 is installed at the top rear end of the polishing bracket 702. A transmission wheel 70 is fixedly installed at the output end of the second servo motor 704 and the rear end of the polishing wheel 703. 5. A transmission belt 706 is installed between the two transmission wheels 705; the automatic polishing mechanism 7 is used to selectively and adaptively polish the surface of the sheet metal 8 to be processed according to the detection results of the photoelectric detection mechanism 5; the servo cylinder 701 is fixedly installed at the center of the top of the support frame 6, and has precise position control and speed control functions. Its piston rod extends downward in the vertical direction. The servo cylinder 701 is connected to an external air source through an air pipe, and controls the extension and retraction of the piston rod through a solenoid valve and a servo controller, and can precisely control the extension length and extension speed of the piston rod; The polishing bracket 702 is fixedly connected to the bottom end of the piston rod of the servo cylinder 701. The polishing bracket 702 can rise and fall synchronously with the piston rod. The polishing bracket 702 has an inverted U-shaped or portal frame structure with its two side walls extending downwards. The polishing wheel 703 is rotatably connected to the bottom of the polishing bracket 702. Specifically, the two ends of the rotating shaft of the polishing wheel 703 are rotatably connected to the two side walls of the polishing bracket 702 respectively through bearings. The axis of the polishing wheel 703 is set horizontally in the front-back direction, and the bottom end of the polishing wheel 703 is lower than the bottom end of the polishing bracket 702. When the polishing bracket 702 descends, the polishing wheel... The bottom surface of the polishing wheel 703 contacts the upper surface of the material to be processed 8 to achieve polishing. The polishing wheel 703 can be a flap wheel, a grinding wheel, or a polishing cloth wheel. The specific type and grit of the polishing wheel 703 can be selected according to the material of the material and the polishing requirements. The second servo motor 704 is installed at the rear end of the top of the polishing bracket 702. The second servo motor 704 drives the polishing wheel 703 to rotate at high speed through the transmission wheel 705 and the transmission belt 706. By controlling the speed of the second servo motor 704, the rotation speed of the polishing wheel 703 can be adjusted to adapt to different polishing process requirements.

[0041] In this embodiment, during operation, the servo cylinder 701 controls the lifting height of the polishing bracket 702 based on the detection data from the photoelectric detection mechanism 5. When there is no protrusion at the current polishing position of the workpiece 8, the piston rod of the servo cylinder 701 extends to the first height position, causing the polishing wheel 703 to contact the workpiece surface with the first pressure (normal polishing pressure) for polishing. When there is a protrusion at the current polishing position of the workpiece 8, the piston rod of the servo cylinder 701 extends further to the second height position, causing the polishing wheel 703 to contact the protruding position on the workpiece surface with the second pressure (increased polishing pressure) for focused polishing of the protrusion, so as to remove the protrusion and make the area flush with the surrounding surface. After the protrusion is polished away, the piston rod of the servo cylinder 701 retracts to the first height position, restoring the normal polishing pressure.

[0042] The working principle of this embodiment is as follows: During processing, the plate to be processed 8 is placed horizontally above multiple conveyor rollers 203. At this time, the conveyor drive mechanism 3 drives the conveyor rollers 203 to rotate synchronously, thereby driving the plate to be processed 8 to move in a directional and uniform speed. The plate to be processed 8 first passes through the detection area of ​​the photoelectric detection mechanism 5. The photoelectric detection mechanism 5 detects whether there are protrusions on the surface of the plate and records the position information of the protrusions. Then the plate to be processed 8 continues to move backward to the bottom of the automatic polishing mechanism 7. According to the protrusion position information fed back by the photoelectric detection mechanism 5, the automatic polishing mechanism 7 selectively presses down the polishing wheel 703 to focus on polishing the protrusion position, or performs ordinary polishing with lighter pressure in the area without protrusions. After polishing, the plate is conveyed to the other side of the supporting conveyor mechanism 2, and finally, it can be unloaded manually.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A plate surface polishing machine based on a photoelectric probe, comprising a fixed base (1), characterized in that: The top of the fixed base (1) is fixedly installed with a support conveying mechanism (2) for conveying the plate to be processed (8), and the rear end of the support conveying mechanism (2) is installed with a conveying drive mechanism (3) for driving it to work. The top front end of the support conveying mechanism (2) is equipped with a plate limiting adjustment mechanism (4), and a photoelectric detection mechanism (5) for detecting the protrusion state of the surface of the plate to be processed (8) is installed on one side of the top of the support conveying mechanism (2). A support frame (6) is fixedly connected to the center of the top rear end of the fixed base (1), and an automatic polishing mechanism (7) for polishing the surface of the plate (8) to be processed is installed on the support frame (6).

2. The plate surface polishing machine based on a photoelectric probe according to claim 1, characterized in that, The support conveying mechanism (2) includes a front bracket (201) and a rear bracket (202) respectively fixed to the front and rear ends of the top of the fixed base (1). A plurality of evenly distributed conveying rollers (203) are rotatably connected between the front bracket (201) and the rear bracket (202).

3. The plate surface polishing machine based on a photoelectric probe according to claim 2, characterized in that, The rear support (202) has a groove at the top front end, and a plurality of evenly distributed rear limit rollers (204) are rotatably connected to the bottom of the groove.

4. The plate surface polishing machine based on a photoelectric probe according to claim 2, characterized in that, The transmission drive mechanism (3) includes a synchronous wheel (301) fixed to the rear end of multiple transmission roller shafts (203). The rear end of the rear support (202) is also equipped with multiple sets of evenly distributed limiting wheels (302). Each set of limiting wheels (302) consists of two wheels, and each set of limiting wheels (302) is located between two adjacent synchronous wheels (301). The multiple synchronous wheels (301) are connected by a synchronous belt (303). A motor bracket (304) is fixedly connected to one side of the top rear end of the fixed base (1). A first servo motor (305) is installed on the motor bracket (304). The output shaft of the first servo motor (305) is fixedly connected to the rear end of the outermost transmission roller shaft (203).

5. The plate surface polishing machine based on a photoelectric probe according to claim 2, characterized in that, The plate limiting adjustment mechanism (4) includes an adjustment bracket (401) slidably mounted on the top of the front bracket (201). The rear end of the adjustment bracket (401) is fixedly connected to a plurality of evenly distributed mounting seats (402). Each mounting seat (402) is rotatably connected to a front limiting roller (403). The front end of the adjustment bracket (401) is fixedly connected to a plurality of adjustment plates (404). Each adjustment plate (404) is provided with a through-strip guide groove (405). Each guide groove (405) is equipped with a locking screw (406).

6. The plate surface polishing machine based on a photoelectric probe according to claim 2, characterized in that, The photoelectric detection mechanism (5) includes a rear probe (501) installed on one side of the rear end of the rear bracket (202), and a mounting block (502) is fixedly installed on one side of the front end of the front bracket (201). A front probe (503) matching the rear probe (501) is installed on the mounting block (502).

7. The plate surface polishing machine based on a photoelectric probe according to claim 6, characterized in that, The central axes of the front probe (503) and the rear probe (501) are located on the same axis.

8. The plate surface polishing machine based on a photoelectric probe according to claim 1, characterized in that, The automatic polishing mechanism (7) includes a servo cylinder (701) fixed at the top center of the support frame (6). The bottom end of the piston rod of the servo cylinder (701) is fixedly connected to a polishing bracket (702). The bottom of the polishing bracket (702) is rotatably connected to a polishing wheel (703). A second servo motor (704) is installed at the top rear end of the polishing bracket (702). The output end of the second servo motor (704) and the rear end of the polishing wheel (703) are both fixedly installed with transmission wheels (705). A transmission belt (706) is installed between the two transmission wheels (705).

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