Color-coated sheet laser processing equipment and control system thereof

Abstract

The invention discloses color-coated sheet laser processing equipment and a control system thereof, and relates to the field of color-coated sheet laser processing, the color-coated sheet laser processing equipment comprises a processing table, symmetrically arranged fixing assemblies are arranged in the processing table, a cover plate is rotatably connected to the top of the processing table, and a controller is fixedly mounted on one side of the processing table; and the controller is used for controlling the output power of the laser. According to the method, the output power of the laser is automatically adjusted, so that the coating on the surface of the color-coated sheet is prevented from being damaged by the laser, meanwhile, the previous measurement data is substituted into a calculation formula in each calculation, the previous data is taken as a reference in each adjustment amount, the accuracy of the adjustment data is ensured, and the accuracy of the color-coated sheet is improved. The output power of laser is adjusted according to the machining requirement and the actual situation, and the effect of protecting the color-coated sheet can be achieved during cutting, welding and cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of laser processing of color-coated plates, and in particular to color-coated plate laser processing equipment and a control system thereof. Background Art

[0002] Color-coated steel sheet laser processing is a process that uses laser technology to perform cutting, punching, engraving, welding and cleaning operations on color-coated steel sheets.

[0003] For example, the "Laser welding method and system for color-coated plates" with publication number CN113210875B includes the following steps: step one, splicing two color-coated plates to be welded together; step two, using a laser to burn the color coating of the plates near the joint to form color-coated slag, wiping off the color-coated slag to expose the galvanized layer under the color coating; step three, removing the exposed galvanized layer with a laser; step four, welding the two color-coated plates to be welded together by laser welding.

[0004] However, in the prior art, during the laser processing, when the laser power is improperly set and exceeds the temperature limit that the coating can withstand, the organic components in the coating will undergo a carbonization reaction, causing the color to become black or darker, affecting the aesthetics of the color-coated plate. At present, there is a certain error in the control of the laser output power by the laser processing device, and the output mode cannot be switched, resulting in the inability to complete the cutting, welding and cleaning tasks during actual processing. Different processing methods require specific fixing methods, and in this process, the stability of the color-coated plate plays a vital role in the final processing quality. During the laser cutting process, the temperature of the part where the color-coated plate contacts the laser is relatively high. At this time, fixing the color-coated plate will cause the separated color-coated plates to continue to maintain contact, and the color-coated plate at the cut part is in a molten state, which makes it easy for the color-coated plates to be reconnected. Summary of the invention

[0005] The purpose of the present invention is to provide a color-coated plate laser processing equipment and a control system thereof, so as to solve the problem raised in the above-mentioned background technology that when the laser power is improperly set and exceeds the temperature limit that the coating can withstand, the organic components in the coating will undergo a carbonization reaction, causing the color to become black or darker, affecting the aesthetics of the color-coated plate. At present, there is a certain error in the control of the laser output power of the laser processing device, and the output mode cannot be switched, resulting in the inability to complete the cutting, welding and cleaning tasks during actual processing.

[0006] To achieve the above object, the present invention provides the following technical solution: a color-coated plate laser processing equipment, comprising a processing table, wherein a symmetrically arranged fixing assembly is arranged inside the processing table, a cover plate is rotatably connected to the top of the processing table, and a controller is fixedly installed on one side of the processing table, wherein the controller is used to control the output power of the laser; The fixing assembly includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are symmetrically distributed on both sides of the processing table, one side of the first connecting plate and one side of the second connecting plate are fixedly installed with a limit plate, the limit plate is overlapped inside the processing table, one end of the first connecting plate and one end of the second connecting plate are fixedly connected with a bending rod, the other end of the bending rod is fixedly connected with a gear rod, the two gear rods are horizontally arranged in an up-and-down symmetrical state, and an adjustment assembly is meshed and connected between the two gear rods.

[0007] Preferably, the adjustment assembly includes a positioning shell and a reduction motor, the two gear rods are slidably connected inside the positioning shell, and the gear rods penetrate the positioning shell, and the reduction motor is fixedly installed at the bottom of one side of the processing table.

[0008] Preferably, the output end of the reduction motor is fixedly connected to a belt transmission assembly, a pulley in the belt transmission assembly is rotatably mounted on the shell of the positioning shell, one end of the shaft of the pulley of the belt transmission assembly is fixedly connected to a connecting gear, and the connecting gear is meshingly connected with the two gear rods.

[0009] Preferably, support plates are fixedly mounted on both ends of the positioning shell, and the gear rod is overlapped at the corners of the support plates.

[0010] Preferably, a guide rod is fixedly mounted on the outer wall of the processing table, both ends of the first connecting plate and the second connecting plate are slidably connected to the outer wall of the guide rod, and a blocking plate is fixedly mounted at the end of the guide rod.

[0011] Preferably, a reinforcement frame is fixedly installed inside the processing table, guide rails are fixedly installed on the upper surfaces of both sides of the reinforcement frame, cross bars are slidably connected to the upper surfaces of the guide rails, the cross bars and the guide rails are perpendicular to each other, and a first servo motor is fixedly installed on one end of the cross bar, a fiber laser is slidably connected to the upper surface of the cross bar, a second servo motor is fixedly installed on one side of the fiber laser housing, a material receiving table is fixedly installed inside the processing table, and a support rod is fixedly installed on the upper surface of the material receiving table.

[0012] A control system for color-coated plate laser processing equipment, comprising a user interaction module, a control module, a power adjustment module, a laser generation module, and a power detection module; The user interaction module is used to input a target laser power value instruction, send a power signal to the control module, and display the current laser power status information of the system; The control module is used to receive the power value instruction from the user interaction module, the power value instruction is set according to the processing requirements, and waits for the laser power data from the power detection module, compares the signal from the power detection module with the preset power value instruction, substitutes the comparison result into the control algorithm to calculate the control amount to be adjusted, and then sends a control signal to the power adjustment module; The power adjustment module is used to adjust the working parameters of the laser generating module according to the control amount transmitted by the control module; The laser generating module is used to generate a laser beam to process the color-coated plate, and a part of the laser beam is collected by the power detecting module; The power detection module includes a power sensor unit and a signal conditioning unit. The power sensor unit is used to measure the laser power received by the color-coated plate in real time. The signal conditioning unit is used to amplify and filter the signal output by the power sensor unit and transmit the processed measurement signal to the control module.

[0013] Preferably, the control module comprises the following steps: S1. Start: Start the system and initialize the power sensor unit; S2. Set target power: After inputting the desired laser power value, the fiber laser outputs laser; S3, real-time power detection: the power detection module detects the current laser output power; S4. Calculate power error: Compare the current power and target power, calculate the error and make a judgment. If the error is within the acceptable range, go to "maintain current output". If the error exceeds the range, go to "adjust output" and send an adjustment instruction.

[0014] Preferably, the control algorithm in the control module includes the following contents: Set three parameters , and ,in is the proportionality coefficient, is the integration coefficient, is the differential coefficient. The three parameters are adjusted according to the processing objectives. During the processing, multiple sampling cycles are continuously set. ; Through formula 1: Calculate the current power error ; Through formula 2: Calculate the proportional output ; Through formula three: Calculate the integral output ; Through formula 4: Calculate the differential output ; Through formula 5: Calculate the control signal adjustment ; Adjust the control signal Convert it into an actual control signal and output it to the power regulation module to adjust the power output of the laser generating module. Repeat the above steps continuously to achieve real-time dynamic adjustment of the power. Formula 1 is the target power value, For the The actual power value at the sampling moment, formula 3 is the integral output of the previous sampling moment, in formula 4 is the power error at the previous sampling moment.

[0015] Preferably, the laser generating module further comprises a mode switching unit, an optical focusing unit, a motion control unit and a gas supply unit; The mode switching unit is used to simultaneously control the optical focusing unit, the motion control unit and the gas supply unit, and controls the working mode of the fiber laser, the parameter adjustment of the optical focusing unit, the motion mode of the motion control unit and the gas switching of the gas supply unit according to the instructions; The optical focusing unit includes a focusing mirror, a spacing adjuster, a beam expander, a homogenizer and a beam mode converter, wherein the focusing mirror is used to focus the laser beam on the surface of the workpiece, the spacing adjuster is used to adjust the position of the focusing mirror, the beam mode converter is used to shape the laser beam into a specific shape, the beam expander is used to expand the laser beam, the homogenizer is used to ensure that the laser energy acts evenly on the surface of the workpiece, and the beam mode converter is used to convert the multi-mode laser into the fundamental mode laser, and convert the fundamental mode beam into a high-order mode beam; The motion control unit is used to control the first servo motor and the second servo motor to drive the crossbar to move in the X-axis and Z-axis directions to process different positions of the workpiece; The gas supply unit includes a gas storage container, a pressure sensor, an electromagnetic switching valve and a flow meter. The gas storage container is equipped with argon and oxygen. The pressure sensor is installed in the pipeline to feed back the pressure signal to the mode switching unit. The electromagnetic switching valve is used to control the opening and closing of the valve and switch different gases. The flow meter is used to control the gas flow.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the output power of the laser is adjusted by setting a control module. When it is actually used, the power of the laser shot onto the color-coated plate is detected at regular intervals, and the control amount is calculated in combination with the actual input power value instruction, and then the output power of the laser is automatically adjusted to ensure that the laser will not damage the coating on the surface of the color-coated plate. At the same time, each calculation will substitute the previous measurement data into the calculation formula to ensure that each adjustment will use the previous data as a reference to ensure the accuracy of the adjustment data. By adjusting the output power of the laser according to the processing requirements and actual conditions, it can protect the color-coated plate during cutting, welding and cleaning.

[0017] 2. In the present invention, a mode switching unit is provided to adjust the output mode of the laser, so that the device can perform welding, cutting and cleaning operations on the color-coated plates, wherein the optical focusing unit is used to adjust the spacing of the lasers. When welding, the size and energy density of the light spot are adjusted to be suitable for color-coated plates of different thicknesses. When cutting, the laser beam is shaped into a specific shape and the laser energy is ensured to be concentrated on the cutting line. When cleaning, the beam expander can expand the light beam, thereby expanding the single cleaning area. These methods can improve processing efficiency and quality.

[0018] 3. In the present invention, by setting a fixing component whose fixing degree can be freely controlled, when cutting, the first connecting plate and the second connecting plate move to the two sides of the processing table to achieve the purpose of quickly releasing the color-coated plate, thereby avoiding the color-coated plates from being in too close contact during the cutting process to prevent the color-coated plates from being reconnected together. When welding, the first connecting plate and the second connecting plate can be moved to the center of the processing table at the same time, so that the color-coated plates are fixed on both sides, so that the two color-coated plates are stably in contact with each other, thereby ensuring the quality of welding, and this method can also be applied to laser cleaning of color-coated plates, so that the device can perform laser cutting, welding and cleaning processing methods, expanding the processing range of a single device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a color-coated plate laser processing equipment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a processing table of a color-coated plate laser processing equipment of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of a reinforcement frame, a fixing component and an adjusting component of a color-coated plate laser processing equipment of the present invention; Figure 4 This is a schematic diagram of the connection and structure of a fixed component and an adjusting component of a color-coated plate laser processing equipment of the present invention; Figure 5This is a schematic diagram of the planar structure of a fixing component and an adjusting component of a color-coated plate laser processing device of the present invention; Figure 6 This is a schematic diagram of the structural changes of the fixed components of a color-coated plate laser processing equipment of the present invention; Figure 7 This is a schematic diagram of a system module of a control system of a color-coated plate laser processing equipment of the present invention; Figure 8 This is a schematic diagram of the operation flow of a control system of a color-coated plate laser processing equipment of the present invention; Fig. 9 The present invention is a schematic diagram of a laser generating module of a control system of a color-coated plate laser processing equipment.

[0020] In the figure: 1, processing table; 2, controller; 3, fixing component; 4, adjustment component; 5, cover plate; 6, guide rod; 7, reinforcement frame; 8, guide rail; 9, cross bar; 10, first servo motor; 11, fiber laser; 12, second servo motor; 13, receiving table; 14, support rod; 15, blocking plate; 201, user interaction module; 202, control module; 203, power adjustment module; 204, laser generation module; 205, power detection module; 206, power sensor unit; 207, signal conditioning unit; 208, mode switching unit; 209, optical focusing unit; 210, motion control unit; 211, gas supply unit; 31, first connecting plate; 32, limit plate; 33, second connecting plate; 34, bending rod; 35, gear rod; 41, positioning shell; 42, reduction motor; 43, support plate; 44, belt drive assembly; 45, connecting gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1: According to Figure 7 and Figure 8 As shown, a control system of a color-coated plate laser processing equipment includes a user interaction module 201, a control module 202, a power adjustment module 203, a laser generation module 204, and a power detection module 205; The user interaction module 201 is used to input the target laser power value instruction and send the power signal to the control module 202, and display the current laser power status information of the system; The control module 202 is used to receive the power value instruction from the user interaction module 201, the power value is set according to the processing requirements, and wait for the laser power data from the power detection module 205, compare the signal from the power detection module 205 with the preset power value instruction, substitute the comparison result into the control algorithm to calculate the control amount to be adjusted, and then send a control signal to the power adjustment module 203; The power adjustment module 203 is used to adjust the working parameters of the laser generating module 204 according to the control amount transmitted by the control module 202; The laser generating module 204 is used to generate a laser beam to process the color-coated plate, and a part of the laser beam is collected by the power detecting module 205; The power detection module 205 includes a power sensor unit 206 and a signal conditioning unit 207. The power sensor unit 206 is used to measure the laser power received by the color-coated plate in real time. The signal conditioning unit 207 is used to amplify and filter the signal output by the power sensor unit 206, and transmit the processed measurement signal to the control module 202. The control module 202 includes the following steps: S1. Start: Start the system and initialize the power sensor unit 206; S2, setting target power: after inputting the desired laser power value, the fiber laser 11 outputs laser; S3, real-time power detection: the power detection module 205 detects the current laser output power; S4. Calculate power error: compare the current power and the target power, calculate the error and make a judgment. If the error is within the acceptable range, go to "maintain current output". If the error is out of the range, go to "adjust output" and send an adjustment instruction. The control algorithm in the control module 202 includes the following: Set three parameters , and ,in is the proportionality coefficient, is the integration coefficient, is the differential coefficient. The three parameters are adjusted according to the processing objectives. During the processing, multiple sampling cycles are continuously set. ; Through formula 1: Calculate the current power error ; Through formula 2: Calculate the proportional output ; Through formula three: Calculate the integral output ; Through formula 4: Calculate the differential output ; Through formula 5: Calculate the control signal adjustment ; Adjust the control signal Converted into actual control signal and output to power adjustment module 203 to adjust the power output of laser generating module 204, and the above steps are repeated continuously to realize real-time dynamic adjustment of power; Formula 1 is the target power value, For the The actual power value at the sampling moment, formula 3 is the integral output of the previous sampling moment, in formula 4 is the power error at the previous sampling moment.

[0023] In this embodiment, the user sets the target power value through the user interaction module 201, the control module 202 receives the set value and the laser power data monitored in real time by the power detection module 205, and sends a control instruction to the power adjustment module 203 after analysis and calculation. The power adjustment module 203 adjusts the power of the laser generating module 204, and the power detection module 205 continuously monitors the laser power and feeds back to the control module 202, thereby forming a closed-loop power control circuit to achieve precise control of the laser output power.

[0024] Embodiment 2: According to Fig. 9 As shown, the laser generating module 204 further includes a mode switching unit 208, an optical focusing unit 209, a motion control unit 210 and a gas supply unit 211; The mode switching unit 208 is used to simultaneously control the optical focusing unit 209, the motion control unit 210 and the gas supply unit 211, and controls the working mode of the fiber laser 11, the parameter adjustment of the optical focusing unit 209, the motion mode of the motion control unit 210 and the gas switching of the gas supply unit 211 according to the instructions; The optical focusing unit 209 includes a focusing mirror, a spacing regulator, a beam expander, a homogenizer, and a beam mode converter. The focusing mirror is used to focus the laser beam on the surface of the workpiece. The spacing regulator is used to adjust the position of the focusing mirror. The beam mode converter is used to shape the laser beam into a specific shape. The beam expander is used to expand the laser beam. The homogenizer is used to ensure that the laser energy acts evenly on the surface of the workpiece. The beam mode converter is used to convert the multi-mode laser into the fundamental mode laser and convert the fundamental mode beam into a high-order mode beam. The motion control unit 210 is used to control the first servo motor 10 and the second servo motor 12 to drive the crossbar 9 to move in the X-axis and Z-axis directions to process different positions of the workpiece; The gas supply unit 211 includes a gas storage container, a pressure sensor, an electromagnetic switching valve and a flow meter. The gas storage container is equipped with argon and oxygen. The pressure sensor is installed in the pipeline to feed back the pressure signal to the mode switching unit 208. The electromagnetic switching valve is used to control the opening and closing of the valve to switch different gases. The flow meter is used to control the gas flow; In this embodiment, the focusing mirror can focus the laser beam onto the surface of the workpiece. During welding, the spot size and energy density can be changed by adjusting the position of the focusing mirror through the spacing regulator. For thin plate welding, a larger spot and lower energy density are used, and for thick plate welding, the spot is reduced and the energy density is increased. During cutting, the beam mode converter is used to shape the laser beam into a specific shape, and is used in conjunction with the focusing mirror to concentrate the laser energy on the cutting line. When laser cleaning large metal surfaces, the beam expander expands the laser beam to cover a larger cleaning area. During the entire process, the homogenizer is used to ensure that the laser energy acts evenly on the workpiece surface. In laser micromachining, the beam mode converter is used to convert multi-mode lasers into fundamental mode lasers and convert fundamental mode beams into high-order mode beams. In laser micro-drilling applications, the fundamental mode beam can drill smaller and higher-quality holes, and the high-order mode beam can increase the effective area of ​​welding. The gas storage container is equipped with argon and oxygen. During welding, nitrogen is used as a protective gas to prevent oxidation of the cut surface. During cutting, oxygen is used to assist combustion. The pressure sensor is installed in the pipeline to feed back the pressure signal to the mode switching unit. The electromagnetic switching valve controls the opening and closing of the valve through the action of electromagnetic force, thereby switching different gases. When switching from welding mode to cutting mode, the mode switching unit 208 sends a signal to make the electromagnetic switching valve close the argon channel and open the oxygen channel at the same time. The flow meter is used to control the gas flow.

[0025] Example 3: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown: a color-coated plate laser processing equipment, including a processing table 1, a symmetrically arranged fixing assembly 3 is arranged inside the processing table 1, a cover plate 5 is rotatably connected to the top of the processing table 1, and a controller 2 is fixedly installed on one side of the processing table 1, and the controller 2 is used to control the output power of the laser; The fixing assembly 3 includes a first connecting plate 31 and a second connecting plate 33, which are symmetrically distributed on both sides of the processing table 1. A limit plate 32 is fixedly installed on one side of the first connecting plate 31 and one side of the second connecting plate 33. The limit plate 32 is overlapped inside the processing table 1. One end of the first connecting plate 31 and one end of the second connecting plate 33 are fixedly connected with a bending rod 34, and the other end of the bending rod 34 is fixedly connected with a toothed rod 35. The two toothed rods 35 are horizontally arranged in an up-and-down symmetrical state, and an adjustment assembly 4 is meshed and connected between the two toothed rods 35. The adjustment component 4 includes a positioning shell 41 and a reduction motor 42. The two gear rods 35 are slidably connected to the inside of the positioning shell 41, and the gear rods 35 penetrate the positioning shell 41. The reduction motor 42 is fixedly installed at the bottom of one side of the processing table 1. The output end of the reduction motor 42 is fixedly connected to a belt transmission component 44. A pulley in the belt transmission component 44 is rotatably installed on the shell of the positioning shell 41. One end of the shaft of the pulley of the belt transmission component 44 is fixedly connected to a connecting gear 45. The connecting gear 45 is meshed with the two gear rods 35. Support plates 43 are fixedly installed at both ends of the positioning shell 41. The gear rods 35 are overlapped at the corners of the support plates 43. A guide rod is fixedly installed on the outer wall of the processing table 1 6. Both ends of the first connecting plate 31 and the second connecting plate 33 are slidably connected to the outer wall of the guide rod 6. A blocking plate 15 is fixedly installed at the end of the guide rod 6. A reinforcement frame 7 is fixedly installed inside the processing table 1. Guide rails 8 are fixedly installed on the upper surfaces of both sides of the reinforcement frame 7. A cross bar 9 is slidably connected to the upper surface of the guide rail 8. The cross bar 9 and the guide rail 8 are perpendicular to each other, and a first servo motor 10 is fixedly installed at one end of the cross bar 9. A fiber laser 11 is slidably connected to the upper surface of the cross bar 9. A second servo motor 12 is fixedly installed on one side of the outer shell of the fiber laser 11. A material receiving table 13 is fixedly installed inside the processing table 1, and a support rod 14 is fixedly installed on the upper surface of the material receiving table 13.

[0026] In this embodiment, a receiving platform 13 is provided inside the processing table 1 to receive the debris, and a support rod 14 is arranged on the upper surface of the receiving platform 13 to support the color-coated plate to be processed. During processing, the color-coated plate to be processed is placed flat on the support rod 14, and then the color-coated plate is fixed using the fixing component 3. When fixing, the fixing force is selected according to the demand, and the fixing force is controlled by the adjustment component 4; The first connecting plate 31 and the second connecting plate 33 are respectively arranged on both sides of the processing table 1. The side of the first connecting plate 31 and the side of the second connecting plate 33 are both provided with a limit plate 32. The first connecting plate 31 and the second connecting plate 33 are both connected with a gear rod 35 through a bending rod 34. The gear rod 35 is meshed and connected with the connecting gear 45 in the adjustment component 4. The reduction motor 42 drives the connecting gear 45 through the belt transmission component 44, and the connecting gear 45 is used to push the gear rod 35 to achieve the purpose of adjusting the position of the first connecting plate 31 and the second connecting plate 33. The closer the distance between the first connecting plate 31 and the second connecting plate 33, the greater the pressure on the color-coated plate. At this time, the stability of the color-coated plate is stronger, which is suitable for cleaning and welding the color-coated plate. When cutting, the first connecting plate 31 and the second connecting plate 33 are first pulled close to fix the color-coated plate. Then, after the cutting is completed, the first connecting plate 31 and the second connecting plate 33 are immediately moved away from each other to contact the fixation of the color-coated plate to avoid the two color-coated plates from being reconnected together. The positioning shell 41 is installed on the side of the processing table 1 and is used to determine the position of the gear rod 35. Support plates 43 are provided at both ends of the positioning shell 41 to determine the position of the gear rod 35 to ensure that the gear rod 35 will not be tilted or misaligned. A guide rod 6 is installed on the shell of the processing table 1. The first connecting plate 31 and the second connecting plate 33 are both sleeved on the guide rod 6 to determine their own moving routes. A blocking plate 15 is provided at the end of the guide rod 6 to prevent the first connecting plate 31 and the second connecting plate 33 from falling off. The fiber laser 11 is slidably mounted on the crossbar 9, and a gear is provided at the output end of the second servo motor 12 on the housing thereof to mesh with the crossbar 9. A first servo motor 10 is provided at one end of the crossbar 9, and a gear is provided at the output end of the first servo motor 10 to mesh with the guide rail 8. When laser processing is performed, the operation of the second servo motor 12 drives the fiber laser 11 to move along the direction of the crossbar 9, and the operation of the first servo motor 10 drives the crossbar 9 to move along the direction of the guide rail 8. During the welding, cutting and cleaning process, the generated debris will fall into the receiving table 13; A reinforcement frame 7 is provided inside the processing table 1, and a guide rail 8 is installed on the reinforcement frame 7, which can ensure the overall structural strength of the equipment. During operation, the cover plate 5 needs to be placed above the processing table 1 to prevent external dust from entering, and at the same time, a power value instruction is input at the controller 2.

[0027] The use method and working principle of the device: during processing, the color-coated plate to be processed is placed flat on the support rod, and then the color-coated plate is fixed by the fixing component 3. When fixing, the fixing force is selected according to the demand, and the fixing force is controlled by the adjustment component 4. The reduction motor 42 drives the connecting gear 45 through the belt transmission component 44, and the connecting gear 45 is used to push the gear rod 35 to achieve the purpose of adjusting the position of the first connecting plate 31 and the second connecting plate 33. The closer the distance between the first connecting plate 31 and the second connecting plate 33, the greater the fixing force of the color-coated plate, which is suitable for cleaning and welding the color-coated plate. The farther the distance between the first connecting plate 31 and the second connecting plate 33, the smaller the fixing force of the color-coated plate, which is suitable for cutting the color-coated plate. Input the power value command at the controller 2. When laser processing is performed, the operation of the second servo motor 12 drives the fiber laser 11 to move along the direction of the crossbar 9, while the operation of the first servo motor 10 drives the crossbar 9 to move along the direction of the guide rail 8. During the welding, cutting and cleaning process, the generated debris will fall into the receiving table 13. During the processing, the control module 202 receives the set value and the laser power data monitored in real time by the power detection module 205, and sends a control instruction to the power adjustment module 203 after analysis and calculation. The power adjustment module 203 adjusts the power of the laser generating module 204, and the power detection module 205 continuously monitors the laser power and feeds back to the control module 202, thereby forming a closed-loop power control circuit to achieve precise control of the laser output power.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A color-coated plate laser processing device, comprising a processing table (1), characterized in that: The processing table (1) is provided with symmetrically arranged fixing components (3) inside, the top of the processing table (1) is rotatably connected to a cover plate (5), and a controller (2) is fixedly installed on one side of the processing table (1), and the controller (2) is used to control the output power of the laser; The fixing assembly (3) comprises a first connecting plate (31) and a second connecting plate (33), the first connecting plate (31) and the second connecting plate (33) being symmetrically arranged on both sides of the processing table (1), a limiting plate (32) being fixedly mounted on one side of the first connecting plate (31) and one side of the second connecting plate (33), the limiting plate (32) being overlapped inside the processing table (1), one end of the first connecting plate (31) and one end of the second connecting plate (33) being fixedly connected to a bending rod (34), the other end of the bending rod (34) being fixedly connected to a toothed rod (35), the two toothed rods (35) being horizontally arranged in an up-and-down symmetrical state, and an adjusting assembly (4) being meshedly connected between the two toothed rods (35).

2. The color-coated plate laser processing equipment according to claim 1 is characterized in that: The adjustment assembly (4) comprises a positioning shell (41) and a reduction motor (42), the two gear rods (35) are slidably connected inside the positioning shell (41), and the gear rods (35) penetrate the positioning shell (41), and the reduction motor (42) is fixedly mounted on the bottom of one side of the processing table (1).

3. The color-coated plate laser processing equipment according to claim 2 is characterized in that: The output end of the reduction motor (42) is fixedly connected to a belt transmission assembly (44), a pulley in the belt transmission assembly (44) is rotatably mounted on the housing of the positioning shell (41), one end of the shaft of the pulley of the belt transmission assembly (44) is fixedly connected to a connecting gear (45), and the connecting gear (45) is meshingly connected to the two gear rods (35).

4. The color-coated plate laser processing equipment according to claim 3 is characterized in that: Support plates (43) are fixedly mounted on both ends of the positioning shell (41), and the gear rod (35) is overlapped at the corners of the support plate (43).

5. The color-coated plate laser processing equipment according to claim 4 is characterized in that: A guide rod (6) is fixedly mounted on the outer wall of the processing table (1), both ends of the first connecting plate (31) and the second connecting plate (33) are slidably connected to the outer wall of the guide rod (6), and a blocking plate (15) is fixedly mounted at the end of the guide rod (6).

6. The color-coated plate laser processing equipment according to claim 5 is characterized in that: A reinforcement frame (7) is fixedly installed inside the processing table (1), and guide rails (8) are fixedly installed on the upper surfaces of both sides of the reinforcement frame (7). A cross bar (9) is slidably connected to the upper surface of the guide rail (8), and the cross bar (9) and the guide rail (8) are perpendicular to each other. A first servo motor (10) is fixedly installed at one end of the cross bar (9), and a fiber laser (11) is slidably connected to the upper surface of the cross bar (9). A second servo motor (12) is fixedly installed on one side of the outer shell of the fiber laser (11). A material receiving table (13) is fixedly installed inside the processing table (1), and a support rod (14) is fixedly installed on the upper surface of the material receiving table (13).

7. A control system for color-coated plate laser processing equipment, using the color-coated plate laser processing equipment as described in any one of claims 1 to 5, characterized in that: It comprises a user interaction module (201), a control module (202), a power adjustment module (203), a laser generation module (204), and a power detection module (205); The user interaction module (201) is used to input a target laser power value instruction, and send a power signal to the control module (202), while displaying the current laser power status information of the system; The control module (202) is used to receive a power value instruction transmitted from the user interaction module (201), wherein the power value is set according to processing requirements, and wait for laser power data transmitted from the power detection module (205), compare the signal transmitted from the power detection module (205) with the preset power value instruction, substitute the comparison result into the control algorithm to calculate the control amount to be adjusted, and then send a control signal to the power adjustment module (203); The power adjustment module (203) is used to adjust the working parameters of the laser generating module (204) according to the control amount transmitted by the control module (202); The laser generating module (204) is used to generate a laser beam to process the color-coated plate, and a part of the laser beam is collected by the power detecting module (205); The power detection module (205) comprises a power sensor unit (206) and a signal conditioning unit (207); the power sensor unit (206) is used to measure the laser power received by the color-coated plate in real time; the signal conditioning unit (207) is used to amplify and filter the signal output by the power sensor unit (206), and transmit the processed measurement signal to the control module (202).

8. The control system of the color-coated plate laser processing equipment according to claim 7 is characterized in that: The control module (202) comprises the following steps: S1. Start: start the system and initialize the power sensor unit (206); S2, setting target power: after inputting the desired laser power value, the fiber laser (11) outputs laser; S3, real-time power detection: the power detection module (205) detects the current laser output power; S4. Calculate power error: Compare the current power and target power, calculate the error and make a judgment. If the error is within the acceptable range, go to "maintain current output". If the error is out of the range, go to "adjust output" and send an adjustment instruction.

9. The control system of the color-coated plate laser processing equipment according to claim 8 is characterized in that: The control algorithm in the control module (202) includes the following contents: Set three parameters , and ,in is the proportionality coefficient, is the integration coefficient, is the differential coefficient. The three parameters are adjusted according to the processing objectives. During the processing, multiple sampling cycles are continuously set. ; Through formula 1: Calculate the current power error ; Through formula 2: Calculate the proportional output ; Through formula three: Calculate the integral output ; Through formula 4: Calculate the differential output ; Through formula 5: Calculate the control signal adjustment ; Adjust the control signal Converting into an actual control signal and outputting it to the power adjustment module (203) to adjust the power output of the laser generating module (204), and continuously repeating the above steps to achieve real-time dynamic adjustment of the power; Formula 1 is the target power value, For the The actual power value at the sampling moment, formula 3 is the integral output of the previous sampling moment, in formula 4 is the power error at the previous sampling moment.

10. The control system of the color-coated plate laser processing equipment according to claim 8, characterized in that: The laser generating module (204) further comprises a mode switching unit (208), an optical focusing unit (209), a motion control unit (210) and a gas supply unit (211); The mode switching unit (208) is used to simultaneously control the optical focusing unit (209), the motion control unit (210) and the gas supply unit (211), and controls the working mode of the fiber laser (11), the parameter adjustment of the optical focusing unit (209), the motion mode of the motion control unit (210), and the gas switching of the gas supply unit (211) according to instructions; The optical focusing unit (209) comprises a focusing mirror, a spacing regulator, a beam expander, a light homogenizer and a beam mode converter, wherein the focusing mirror is used to focus the laser beam onto the surface of the workpiece, the spacing regulator is used to adjust the position of the focusing mirror, the beam mode converter is used to shape the laser beam into a specific shape, the beam expander is used to expand the laser beam, the light homogenizer is used to ensure that the laser energy acts evenly on the surface of the workpiece, and the beam mode converter is used to convert the multi-mode laser into the fundamental mode laser, and convert the fundamental mode beam into a high-order mode beam; The motion control unit (210) is used to control the first servo motor (10) and the second servo motor (12) to drive the crossbar (9) to move in the X-axis and Z-axis directions to process different positions of the workpiece; The gas supply unit (211) comprises a gas storage container, a pressure sensor, an electromagnetic switching valve and a flow meter. The gas storage container is provided with argon and oxygen. The pressure sensor is installed in the pipeline and is used to feed back a pressure signal to the mode switching unit (208). The electromagnetic switching valve is used to control the opening and closing of the valve and switch between different gases. The flow meter is used to control the gas flow.

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