Continuous laser marking equipment and marking method thereof

Abstract

The invention relates to the technical field of laser marking, in particular to laser beam machining, and discloses continuous laser marking equipment which comprises a laser marking machine and a laser device shell, a mounting part is arranged in the laser device shell and comprises a mirror chamber, the mirror chamber is connected into the laser device shell, a laser part is mounted in the mirror chamber, and the laser part is connected with the laser device shell. The laser part comprises a first angle sensor and a second angle sensor, the first angle sensor is connected with an X-axis galvanometer, the second angle sensor is connected with a Y-axis galvanometer, a distance adjusting part is arranged in the mirror chamber and comprises a first supporting plate, the first supporting plate is fixedly connected in the mirror chamber, and the angle sensors are used for monitoring the galvanometer angle in real time. The adjusting and controlling part and the distance adjusting part achieve independent displacement compensation of the galvanometer, the compensation part corrects deviation through distance difference when a complex pattern is drawn, light spot overlapping is avoided, a high-expansion alloy column drives the galvanometer to be in synchronous linkage under high load, the relative position is corrected, aberration generated when a laser beam passes through the edge of a field lens is relieved, light spot distortion is reduced, and the marking quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to laser beam processing, in particular to the field of laser marking technology, and specifically to a continuous laser marking device and a marking method thereof. BACKGROUND

[0002] The continuous laser marking machine has been widely used in the fields of precision machining such as electronic manufacturing, automobile parts and medical devices, due to its high-speed and high-precision marking characteristics. The core working component is an X-axis and Y-axis laser galvanometer system, which controls the deflection angle of the mirror through closed-loop logic to realize high-speed scanning and pattern drawing of the laser beam on the workpiece surface.

[0003] In the prior art, the closed-loop control logic of the X-axis and Y-axis laser galvanometer mainly relies on real-time comparison of position feedback and target angle, and the deflection angle of the mirror is quickly adjusted by a servo motor to ensure that the laser beam moves along the preset trajectory.

[0004] However, in actual application, the technical scheme still has the problem of insufficient pattern drawing precision. When drawing complex patterns such as high-density dot matrix and fine curves, due to the slight difference in dynamic response speed of the X-axis and Y-axis galvanometers or the accumulation of lag error of the closed-loop control, the position deviation of adjacent light spots is easy to occur, resulting in light spot overlapping phenomenon. At the same time, when the deflection angle of the galvanometer is close to the maximum range, the aberration generated by the laser beam passing through the edge area of the field lens will intensify the light spot distortion such as the change of circular light spot into elliptical shape and uneven energy distribution, which seriously affects the marking quality.

[0005] Secondly, when different sizes of workpieces need to be adapted to the dynamic scaling of the marking pattern, the prior art usually expands the scanning range by increasing the deflection angle of the galvanometer or compensates for the energy attenuation of the edge light spot by increasing the laser power. This operation mode will make the galvanometer motor run in a high-load state for a long time, accelerate the wear of mechanical components, and the power fluctuation of the laser source will also shorten its service life and increase the equipment maintenance cost. Therefore, a continuous laser marking device and a marking method thereof are proposed to solve the above-mentioned problems. SUMMARY

[0006] (I) Technical problems solved In view of the deficiencies of the prior art, the application provides a continuous laser marking device and a marking method thereof, which solves the problems of light spot overlapping and distortion of the existing X-axis and Y-axis laser galvanometer system, and the long-term high-load state, thereby reducing the pattern precision and the service life of the equipment.

[0007] (II) Technical scheme To achieve the above object, the application provides the following technical scheme: a continuous laser marking equipment, comprising a laser marker and a laser shell, a mounting portion is arranged in the laser shell, the mounting portion comprises a mirror chamber, the mirror chamber is connected in the laser shell, a laser portion is arranged in the mirror chamber, the laser portion comprises an angle sensor one and an angle sensor two, an X-axis galvanometer is connected to the angle sensor one, a Y-axis galvanometer is connected to the angle sensor two, a distance adjusting portion is arranged in the mirror chamber, the distance adjusting portion comprises a supporting plate one, the supporting plate one is fixedly connected in the mirror chamber, a supporting ring is fixedly connected to the supporting plate one, a flange is rotatably sleeved to the supporting ring, a clamping hole is formed around the flange, a control portion is arranged in the mirror chamber, the control portion comprises a supporting plate three, the supporting plate three is arranged in the mirror chamber, a positioning column is slidably connected to the supporting plate three, a circular table is fixedly connected to one end of the positioning column, a rod sleeve is arranged around the circular table, clamping rods corresponding to the clamping holes are slidably connected in the rod sleeve, springs are elastically connected between the clamping rods and the inner walls of the rod sleeves, a compensation portion is arranged on the positioning column, the compensation portion comprises a micro linear motor, the micro linear motor is arranged in the mirror chamber, a cylinder sleeve is arranged on the moving end of the micro linear motor, a high-expansion alloy column is slidably connected in the cylinder sleeve, one end of the high-expansion alloy column is fixedly connected to the other end of the positioning column.

[0008] Preferably, a sliding channel one and a cooling channel are formed on one side of the mirror chamber, a sliding channel two is formed on the other side of the mirror chamber, a circuit mounting plate is arranged between the mirror chamber and the inner wall of the laser shell, and a metal support is arranged on the inner wall of the laser shell.

[0009] Preferably, sliding blocks and baffles are fixedly sleeved to the angle sensor one and the angle sensor two, a supporting arm one is fixedly connected to one side of the baffle on the angle sensor two, a supporting arm two is fixedly connected to one side of the baffle on the angle sensor one, threaded rings are fixedly connected to the end portions of the supporting arm one and the supporting arm two, and a focusing lens is arranged on one side of the mirror chamber.

[0010] Preferably, the angle sensor one is movably arranged through the sliding channel two, the sliding block on the angle sensor one is slidably connected to the sliding channel two, the angle sensor two is movably arranged through the sliding channel one, and the sliding block on the angle sensor two is slidably connected to the sliding channel one.

[0011] Preferably, a main control portion is arranged in the mirror chamber, the main control portion comprises a micro motor, the micro motor is arranged between the mirror chamber and the inner wall of the laser shell, a temperature sensor is arranged on the mirror chamber, the temperature sensor is aligned and electrically connected on the same side of the micro motor, a rotating shaft is connected to the output shaft of the micro motor, and the rotating shaft is movably arranged in the mirror chamber.

[0012] Preferably, the main control part further comprises two rotating rods, one of which is fixedly connected to the through end of the rotating shaft, and the other is rotatably connected to the inner wall of the mirror chamber, and the end of each rotating rod is provided with a sliding hole, and a limiting hole is formed in the inner wall of each sliding hole.

[0013] Preferably, the center of the circular table is fixedly connected with a sliding rod, and the sliding rod is fixedly connected with a limiting piece, the number of the control parts is two, the two control parts are symmetrically arranged, the sliding rods in the two control parts are respectively slidably connected to the inner walls of the sliding holes on the same side, the limiting pieces in the two control parts are respectively slidably connected to the inner walls of the limiting holes on the same side, and the other end of the high-expansion alloy column is fixedly connected with the end of the positioning column in the other control part.

[0014] Preferably, the inner wall of the mirror chamber is rotatably connected with a rod head on one side, the rod head is fixedly connected with a screw rod, the end of the screw rod is rotatably connected with a second supporting plate, the second supporting plate is fixedly connected in the mirror chamber, the flange and the smooth section of the screw rod are both sleeved with a transmission wheel, the transmission wheels are transmissionally connected with a transmission belt, and the number of the distance adjusting parts is two, and the two distance adjusting parts are symmetrically arranged.

[0015] Preferably, the rod head in the other distance adjusting part is rotatably connected to the inner wall of the mirror chamber on the other side, the first supporting arm and the second supporting arm are respectively threadedly connected to the threaded sections of the screw rods in the two distance adjusting parts, and the high-expansion alloy column is a Fe-Mn-Al-C low-density steel.

[0016] A marking method of a continuous laser marking device, according to the continuous laser marking device, comprising the following steps: Step one: start the laser marking machine, input the parameters of the pattern to be marked through the control system, at the same time, the temperature sensor starts to monitor the temperature in the mirror chamber in real time, and transmits the temperature data to the main control unit; Step two: the main control unit drives the micro motor to rotate through the rotating shaft, the limiting hole in the sliding hole cooperates with the limiting piece to drive the sliding rod and the circular table to rotate synchronously, the micro linear motor operates to drive the sleeve to move to one side, so that the sleeve hole contacts and pushes the positioning column on one side to slide along the third supporting plate, so that the clamping rod is clamped into the clamping hole of the flange under the action of the spring force, synchronously drives the transmission wheel on the flange to rotate, drives the screw rod connected with the transmission wheel to rotate, and drives the second supporting arm to move, so as to drive the angle sensor one to finely adjust in the second sliding groove, reset the initial coordinates of the X-axis galvanometer, on the contrary, the micro linear motor drives the sleeve to move to the other side, the other clamping rod is clamped into the clamping hole on the same side, so that the first supporting arm moves to reset the initial coordinates of the Y-axis galvanometer, and the angle sensor one and the angle sensor two detect the deflection angles of the X-axis galvanometer and the Y-axis galvanometer in real time, so as to ensure that the positions of the galvanometers match the preset track; Step three: the micro linear motor drives the cylinder sleeve to adjust the position in real time according to the processing requirements, so that the X-axis galvanometer and the Y-axis galvanometer are independently displaced, and the distance difference between the two galvanometers is compensated in real time to compensate the precision of complex pattern drawing; Step four: under the condition of continuous laser marking high load, the temperature sensor detects the temperature change in the mirror chamber, the Fe-Mn-Al-C high expansion alloy column generates thermal expansion due to the temperature change, pushes the two positioning columns to move slightly, and then inserts the two clamping rods into the corresponding clamping holes at the same time, so that the X-axis galvanometer and the Y-axis galvanometer can be synchronously displaced, the relative position of the X-axis galvanometer and the Y-axis galvanometer is corrected in real time, the drawing difficulty under high power load is further compensated, and the continuous marking pressure is reduced.

[0017] (Three) beneficial effects Compared with the prior art, the present application provides a continuous laser marking device and a marking method thereof, which has the following beneficial effects: 1. The continuous laser marking device uses an angle sensor to monitor the angle of the galvanometer in real time, the adjusting part and the distance adjusting part realize independent displacement compensation of the galvanometer, the compensation part corrects the deviation through the distance difference during complex pattern drawing, avoids spot overlap, the high expansion alloy column drives the galvanometer to synchronously move under high load, corrects the relative position, relieves the aberration generated by the laser beam passing through the edge of the field lens, reduces the spot distortion, and guarantees the marking quality.

[0018] 2. The continuous laser marking device does not need to expand the scanning range by increasing the deflection angle of the galvanometer or increase the laser power to compensate for energy attenuation under high load, but realizes precision correction through the thermal expansion linkage of the compensation part, reduces the high load operation of the galvanometer motor, reduces the wear of mechanical parts, the synergistic effect of the cooling channel and the high expansion alloy controls the temperature stability of the mirror chamber, reduces the power fluctuation of the laser source, prolongs the overall service life of the device, and reduces the maintenance cost.

[0019] 3. The continuous laser marking device uses the main control part as the center to coordinate each part, the micro linear motor and the high expansion alloy column realize active electric control compensation and passive thermal expansion compensation respectively, can automatically switch the compensation mode according to the complexity of the marking pattern and the load state, adapt to the marking requirements of workpieces and complex patterns of different sizes, and improve the universality and adaptability of the device.

[0020] 4. The continuous laser marking device uses each part to realize stable power transmission through a mechanical structure, cooperates with the real-time feedback of the sensor, reduces the control lag error, realizes the automation of the initial reset process, does not need manual adjustment, shortens the preparation time of the device, and at the same time, the dynamic compensation function during continuous marking guarantees the continuity of the process and improves the marking efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1A structure diagram of the inside of a laser head shell of a continuous laser marking equipment is provided in the present application. Figure 2 A structure diagram of the installation part is provided in the present application. Figure 3 A structure diagram of the inside of a mirror chamber is provided in the present application. Figure 4 A structure diagram of the laser part is provided in the present application. Figure 5 A connection diagram of the main control part, the regulation and control part and the distance regulation part is provided in the present application. Figure 6 A structure diagram of the main control part is provided in the present application. Figure 7 A structure diagram of the regulation and control part and the distance regulation part is provided in the present application. Figure 8 A sectional view of the compensation part is provided in the present application. Figure 9 A structure diagram of the laser marking machine is provided in the present application.

[0022] In the figure: 1, laser marking machine; 2, laser shell; 3, installation part; 31, mirror chamber; 32, slide one; 33, slide two; 34, cooling channel; 35, circuit installation plate; 36, sheet metal support; 4, laser part; 41, angle sensor one; 42, X-axis galvanometer; 43, angle sensor two; 44, Y-axis galvanometer; 45, sliding block; 46, baffle; 47, support arm one; 48, support arm two; 49, threaded ring; 410, focusing lens; 5, main control part; 51, micro motor; 52, rotating shaft; 53, rotating rod; 54, sliding hole; 55, limiting hole; 6, distance regulation part; 61, support plate one; 62, support ring; 63, flange; 64, clamping hole; 65, rod head; 66, screw rod; 67, support plate two; 68, transmission wheel; 69, transmission belt; 7, regulation and control part; 71, support plate three; 72, positioning column; 73, circular table; 74, rod sleeve; 75, clamping rod; 76, sliding rod; 77, limiting sheet; 8, compensation part; 81, micro linear motor; 82, cylinder sleeve; 83, high expansion alloy column. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-9The laser marking equipment belongs to laser beam processing, and provides a continuous laser marking equipment, which comprises a laser marking machine 1 and a laser shell 2, and the laser shell 2 is provided with a mounting part 3, which provides stable installation and protection environment for the core component of the equipment, and simultaneously assists heat dissipation and line arrangement, the mounting part 3 comprises a mirror chamber 31, the size of the mirror chamber 31 is 200 mm, the mirror chamber 31 is connected in the laser shell 2, a slide 32 and a cooling channel 34 are formed in one side of the mirror chamber 31, a special cooling system for laser can be installed in the cooling channel 34, so that the temperature in the mirror chamber 31 is less than 25 DEG C under normal working condition, a slide 33 is formed in the other side of the mirror chamber 31, a line mounting plate 35 is installed between the mirror chamber 31 and the inner wall of the laser shell 2, the line mounting plate 35 is used for installation of lines and galvanometer motors, a metal support 36 is installed on the inner wall of the laser shell 2, and a laser circuit board is arranged on the metal support 36, and the temperature in the laser shell 2 can reach 45 DEG C to 110 DEG C under continuous high-power mode.

[0025] In the application, the laser part 4 is installed in the mirror chamber 31, the deflection control and angle monitoring of the laser beam are realized, the basic laser track is provided for marking pattern drawing, the laser focusing precision is ensured, the laser part 4 comprises an angle sensor one 41 and an angle sensor two 43, the X-axis galvanometer 42 is connected to the angle sensor one 41, the Y-axis galvanometer 44 is connected to the angle sensor two 43, the sliding block 45 and the baffle 46 are fixedly arranged on the angle sensor one 41 and the angle sensor two 43, the branch arm one 47 is fixedly connected to one side of the baffle 46 on the angle sensor two 43, the branch arm two 48 is fixedly connected to one side of the baffle 46 on the angle sensor one 41, the threaded ring 49 is fixedly connected to the end of the branch arm one 47 and the branch arm two 48, the focusing lens 410 is installed in communication with one side of the mirror chamber 31, the angle sensor one 41 passes through the slide 33, the sliding block 45 on the angle sensor one 41 is in sliding connection with the slide 33, the angle sensor two 43 passes through the slide 32, and the sliding block 45 on the angle sensor two 43 is in sliding connection with the slide 32.

[0026] Further, the mirror chamber 31 is provided with a main control part 5, which receives temperature data and marking parameters as the equipment control center, realizes the linkage control trigger of the initial position reset of the galvanometer and the high load state, and the main control part 5 includes a micro motor 51, which is installed between the mirror chamber 31 and the inner wall of the laser shell 2. The temperature sensor is installed on the mirror chamber 31, which monitors the temperature in the mirror chamber 31 in real time. The temperature sensor is aligned and electrically connected with the micro motor 51 on the same side. The temperature threshold is set at 75°C, which can activate the micro motor 51 through the main control unit. The output shaft of the micro motor 51 is connected with a rotating shaft 52, which is movably penetrated into the mirror chamber 31. The main control part 5 further includes two rotating rods 53, one of which is fixedly connected to the penetrating end of the rotating shaft 52, and the other is rotatably connected to the inner wall of the mirror chamber 31. The end portions of the two rotating rods 53 are provided with sliding holes 54, and the sliding holes 54 are provided with limiting holes 55.

[0027] In the embodiment, the mirror chamber 31 is provided with a distance adjusting part 6, which converts the power of the regulating part 7 into the linear displacement of the galvanometer, realizes the independent position adjustment of the X-axis and Y-axis galvanometer, provides displacement driving for pattern accuracy compensation and initial reset, and the distance adjusting part 6 includes a first supporting plate 61 fixedly connected in the mirror chamber 31, a supporting ring 62 fixedly connected on the first supporting plate 61, a flange 63 rotatably sleeved on the supporting ring 62, a clamping hole 64 circumferentially provided on the flange 63, a rod head 65 rotatably connected on one side of the inner wall of the mirror chamber 31, a screw rod 66 fixedly connected on the rod head 65, a second supporting plate 67 rotatably connected on the end portion of the screw rod 66, the second supporting plate 67 is fixedly connected in the mirror chamber 31, the flange 63 and the smooth section of the screw rod 66 are sleeved with transmission wheels 68, the transmission wheels 68 are transmissionally connected with a transmission belt 69, the number of the distance adjusting part 6 is two, the two distance adjusting parts 6 are symmetrically arranged, the rod head 65 in the other distance adjusting part 6 is rotatably connected on the other side of the inner wall of the mirror chamber 31, and the first supporting arm 47 and the second supporting arm 48 are respectively threadedly connected on the threaded section of the screw rod 66 in the two distance adjusting parts 6.

[0028] It is worth noting that the mirror chamber 31 is provided with the regulating part 7, which controls the start and stop and the action direction of the distance regulating part, realizes the independent regulation or synchronous linkage of the galvanometer of X axis and Y axis, accurately controls the galvanometer displacement opportunity and amplitude, the regulating part 7 includes the supporting plate three 71, the supporting plate three 71 is installed in the mirror chamber 31, the supporting plate three 71 is slidably connected with the positioning column 72, one end of the positioning column 72 is fixedly connected with the circular table 73, the circular table 73 is circumferentially installed with the rod sleeve 74, the rod sleeve 74 is slidably connected with the clamping rod 75 corresponding to the clamping hole 64, the distance between the clamping rod 75 and the clamping hole 64 is less than 5mm, the clamping rod 75 and the inner wall of the rod sleeve 74 are elastically connected with the spring, the center of the circular table 73 is fixedly connected with the sliding rod 76, the sliding rod 76 is fixedly connected with the limiting sheet 77, the number of the regulating part 7 is two, the two regulating parts 7 are symmetrically arranged, the sliding rods 76 in the two regulating parts 7 are slidably connected with the inner walls of the slide holes 54 on the same side, the limiting sheets 77 in the two regulating parts 7 are slidably connected with the inner walls of the limiting holes 55 on the same side, the other end of the high-expansion alloy column 83 is fixedly connected with the end of the positioning column 72 in the other regulating part 7.

[0029] It is worth noting that the positioning column 72 is provided with the compensation part 8, which realizes the active precision compensation of the galvanometer, including the independent displacement compensation of complex patterns and the synchronous linkage compensation under high load, relieves the problems of spot distortion and high load of the equipment, the compensation part 8 includes the micro linear motor 81, the micro linear motor 81 is installed in the mirror chamber 31, the mover end of the micro linear motor 81 is installed with the cylinder sleeve 82, the cylinder sleeve 82 is slidably connected with the high-expansion alloy column 83, the high-expansion alloy column 83 is Fe-Mn-Al-C low-density steel, the size is 100mm, the two ends are synchronously expanded to 5mm at 75℃ high temperature, that is, the whole is expanded to 110mm, one end of the high-expansion alloy column 83 is fixedly connected with the other end of the positioning column 72, the micro linear motor 81 drives the cylinder sleeve 82 to move to adjust the locking or unlocking of the clamping rod 75 and the clamping hole 64 on one side, the affine transformation of the laser trajectory is adopted to stretch and distort, the compensation of the distortion of the complex pattern drawing scale is adopted, the high-expansion alloy column 83 is used to promote the simultaneous locking of the clamping rod 75 and the clamping hole 64 on both sides, the high-load drawing precision pressure is compensated, the similar transformation of the laser trajectory is adopted to scale, and the problems of spot overlap and distortion are reduced.

[0030] A marking method of a continuous laser marking device, according to the above-mentioned continuous laser marking device, comprising the following steps: Step one: start the laser marking machine 1, input the parameters of the pattern to be marked through the control system, at the same time, the temperature sensor starts to monitor the temperature in the mirror chamber 31 in real time, and transmits the temperature data to the main control unit; Step two: the main control unit drives the micro motor 51 to rotate through the rotating shaft 52, which drives the rotating rod 53 fixed thereto to rotate. The limiting hole 55 in the sliding hole 54 cooperates with the limiting piece 77 to drive the sliding rod 76 and the circular table 73 to rotate synchronously. The micro linear motor 81 drives the cylinder sleeve 82 to move to one side, so that the cylinder opening of the cylinder sleeve 82 contacts and pushes the one-side positioning column 72 to slide along the support plate three 71, so that the clamping rod 75 is clamped into the clamping hole 64 of the flange 63 under the action of the spring, and the transmission wheel 68 on the flange 63 is driven to rotate synchronously, which drives the connected screw 66 to rotate and drives the support arm two 48 to move, thereby driving the angle sensor one 41 to fine-tune in the slide two 33, and resetting the initial coordinates of the X-axis galvanometer 42. Conversely, the micro linear motor 81 drives the cylinder sleeve 82 to move to the other side, and the other clamping rod 75 is clamped into the clamping hole 64 on the same side, so that the support arm one 47 moves to reset the initial coordinates of the Y-axis galvanometer 44. The angle sensor one 41 and the angle sensor two 43 detect the deflection angle of the X-axis galvanometer 42 and the Y-axis galvanometer 44 in real time, so as to ensure that the position of the galvanometer matches the preset trajectory. Step three: the micro linear motor 81 drives the cylinder sleeve 82 to fine-tune the position in real time according to the processing requirement, so that the X-axis galvanometer 42 and the Y-axis galvanometer 44 independently displace, and the distance difference between the two galvanometers is compensated in real time to compensate the precision of drawing complex patterns. Step four: under the condition of continuous laser marking high load, when the temperature sensor detects that the temperature in the mirror chamber 31 changes, the Fe-Mn-Al-C high expansion alloy column 83 generates thermal expansion due to the temperature change, which drives the two positioning columns 72 to move slightly, so that the two clamping rods 75 are inserted into the corresponding clamping holes 64 at the same time, so that the X-axis galvanometer 42 and the Y-axis galvanometer 44 can displace synchronously, and the relative position of the X-axis galvanometer 42 and the Y-axis galvanometer 44 is corrected in real time, so as to further compensate the drawing difficulty under high power load, thereby reducing the continuous marking pressure.

[0031] Working principle: after the device is started, the micro motor 51 of the main control part 5 drives the rotating rod 53 to rotate through the rotating shaft 52. The sliding hole 54 of the rotating rod 53 cooperates with the limiting piece 77 of the regulating part 7 to drive the positioning column 72 to rotate.

[0032] The micro linear motor 81 drives the cylinder sleeve 82 to fine-tune, so that the one-side positioning column 72 slides in the support plate three 71, and the sliding rod 76 slides in the sliding hole 54, so as to realize the independent displacement of the X-axis or Y-axis galvanometer. The clamping rod 75 is clamped into the corresponding clamping hole 64 under the action of the spring, so that the side flange 63 and the screw 66 are connected through the transmission wheel 68 and the transmission belt 69, thereby driving the support arm one 47 or the support arm two 48 to push the Y-axis galvanometer 44 or the X-axis galvanometer 42 to move. At the same time, the angle sensor one 41 and the angle sensor two 43 detect the angle of the galvanometer in real time, so as to ensure that the initial position matches the preset trajectory.

[0033] According to the marking requirements, the precision deviation during the drawing of complex patterns is compensated by the distance difference of the two mirrors, and the light spot overlap is avoided. When continuous high-power marking is performed, the temperature sensor monitors the temperature change of the mirror chamber 31 to reach a threshold value of 75°C. The Fe-Mn-Al-C high-expansion alloy column 83 expands under heat, and its two ends expand and extend to both sides along the cylinder sleeve 82, thereby pushing the two side positioning columns 72 to move, and the two side clamping rods 75 are synchronously clamped into the corresponding clamping holes 64, realizing the linkage and synchronous displacement of the X-axis mirror 42 and the Y-axis mirror 44, correcting the relative position, and without further increasing the mirror angle or laser power, thereby reducing the load of the equipment, and at the same time, the cooling channel 34 maintains the temperature of the mirror chamber 31, and guarantees the service life of the equipment.

[0034] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or equipment including the element.

Claims

1. The invention is a continuous laser marking device, which belongs to the field of laser marking technology and comprises a laser marking machine and a laser shell, wherein the laser shell is provided with a mounting part, the mounting part comprises a mirror chamber, the mirror chamber is connected in the laser shell, a laser part is installed in the mirror chamber, the laser part comprises an angle sensor one and an angle sensor two, an X-axis galvanometer is connected to the angle sensor one, a Y-axis galvanometer is connected to the angle sensor two, a distance adjusting part is arranged in the mirror chamber, the distance adjusting part comprises a support plate one, the support plate one is fixedly connected in the mirror chamber, the angle sensor is used to monitor the angle of the galvanometer in real time, the adjusting part and the distance adjusting part realize independent displacement compensation of the galvanometer, the compensation part corrects the deviation through the distance difference when a complex pattern is drawn, avoids spot overlap, drives the galvanometer to synchronously link under high load and high expansion alloy column, corrects the relative position, relieves the aberration generated by the laser beam passing through the edge of the field lens, reduces the spot distortion, and guarantees the marking quality.

2. A continuous laser marking apparatus according to claim 1, characterized in that: One side of the mirror chamber (31) is provided with a slide one (32) and a cooling channel (34), the other side of the mirror chamber (31) is provided with a slide two (33), a circuit installation plate (35) is installed between the mirror chamber (31) and the inner wall of the laser shell (2), and a sheet metal support (36) is installed on the inner wall of the laser shell (2).

3. A continuous laser marking apparatus according to claim 2, wherein: The angle sensor one (41) and the angle sensor two (43) are both fixedly provided with a sliding block (45) and a baffle (46), one side of the baffle (46) on the angle sensor two (43) is fixedly connected with a support arm one (47), one side of the baffle (46) on the angle sensor one (41) is fixedly connected with a support arm two (48), the end portions of the support arm one (47) and the support arm two (48) are both fixedly connected with a threaded ring (49), and one side of the mirror chamber (31) is continuously provided with a focusing lens (410).

4. A continuous laser marking apparatus according to claim 3, wherein: The angle sensor one (41) movably passes through the slide two (33), the sliding block (45) on the angle sensor one (41) is in sliding connection with the slide two (33), the angle sensor two (43) movably passes through the slide one (32), and the sliding block (45) on the angle sensor two (43) is in sliding connection with the slide one (32).

5. A continuous laser marking apparatus according to claim 4, wherein: A main control part (5) is arranged in the mirror chamber (31), the main control part (5) comprises a micro motor (51), the micro motor (51) is installed between the mirror chamber (31) and the inner wall of the laser shell (2), a temperature sensor is installed on the mirror chamber (31), the temperature sensor is aligned and electrically connected with the micro motor (51) on the same side, an output shaft of the micro motor (51) is connected with a rotating shaft (52), and the rotating shaft (52) movably penetrates into the mirror chamber (31).

6. A continuous laser marking apparatus according to claim 5, wherein: The main control part (5) further comprises two rotating rods (53), one of the rotating rods (53) is fixedly connected to the penetrating end of the rotating shaft (52), the other rotating rod (53) is rotatably connected to the inner wall of the mirror chamber (31), the end portions of the two rotating rods (53) are both provided with sliding holes (54), and a limiting hole (55) is arranged in each sliding hole (54).

7. A continuous laser marking apparatus according to claim 6, wherein: The circular truncated cone (73) is fixedly connected with a sliding rod (76), the sliding rod (76) is fixedly connected with a limiting sheet (77), the number of the regulating parts (7) is two, the two regulating parts (7) are symmetrically arranged, the sliding rod (76) in the two regulating parts (7) is respectively slidably connected with the inner wall of the sliding hole (54) on the same side, the limiting sheet (77) in the two regulating parts (7) is respectively slidably connected with the inner wall of the limiting hole (55) on the same side, and the other end of the high-expansion alloy column (83) is fixedly connected with the end of the positioning column (72) in the other regulating part (7).

8. A continuous laser marking apparatus according to claim 7, wherein: The inner wall of the mirror chamber (31) is rotatably connected with a rod head (65), the rod head (65) is fixedly connected with a screw rod (66), the end of the screw rod (66) is rotatably connected with a second supporting plate (67), the second supporting plate (67) is fixedly connected in the mirror chamber (31), the flange (63) and the smooth section of the screw rod (66) are both sleeved with a transmission wheel (68), the transmission wheels (68) are transmissionally connected with a transmission belt (69), and the number of the distance adjusting parts (6) is two.

9. A continuous laser marking apparatus according to claim 8, wherein: The rod head (65) in the other distance adjusting part (6) is rotatably connected with the other side of the inner wall of the mirror chamber (31), the first supporting arm (47) and the second supporting arm (48) are respectively threadedly connected with the threaded section of the screw rod (66) in the two distance adjusting parts (6), and the high-expansion alloy column (83) is Fe-Mn-Al-C low-density steel.

10. A method of marking with a continuous laser marking apparatus according to claim 9, characterized in that The method comprises the following steps: Step one: start the laser marking machine (1), input the parameters of the pattern to be marked through the control system, and at the same time, the temperature sensor starts to monitor the temperature in the mirror chamber (31) in real time and transmits the temperature data to the main control unit; Step two: the main control unit drives the micro motor (51) to rotate through the rotating shaft (52) to drive the fixed rotating rod (53), the limiting hole (55) in the sliding hole (54) cooperates with the limiting sheet (77) to drive the sliding rod (76) and the circular truncated cone (73) to rotate synchronously, the micro linear motor (81) operates to drive the cylinder sleeve (82) to move to one side, so that the cylinder opening of the cylinder sleeve (82) contacts and pushes the one side positioning column (72) to slide along the third supporting plate (71), so that the clamping rod (75) is clamped into the clamping hole (64) of the flange (63) under the action of the spring force, synchronously drives the transmission wheel (68) on the flange (63) to rotate, drives the connected screw rod (66) to rotate through transmission, and drives the second supporting arm (48) to move, so as to drive the angle sensor one (41) to finely adjust in the sliding way two (33), reset the initial coordinates of the X-axis galvanometer (42), on the contrary, the micro linear motor (81) drives the cylinder sleeve (82) to move to the other side, the other clamping rod (75) is clamped into the clamping hole (64) on the same side, so that the first supporting arm (47) moves to reset the initial coordinates of the Y-axis galvanometer (44), the angle sensor one (41) and the angle sensor two (43) detect the deflection angle of the X-axis galvanometer (42) and the Y-axis galvanometer (44) in real time, so as to ensure that the position of the galvanometer matches the preset track. Step three: the micro linear motor (81) drives the cylinder sleeve (82) to adjust the position in real time according to the processing requirements, so that the X-axis galvanometer (42) and the Y-axis galvanometer (44) are independently displaced, and the distance difference between the two galvanometers is compensated in real time to compensate the precision of complex pattern drawing; Step four: under the condition of continuous laser marking high load, the temperature sensor detects the temperature change in the mirror chamber (31), the Fe-Mn-Al-C high expansion alloy column (83) generates thermal expansion due to temperature change, pushes the two positioning columns (72) to move slightly, and then inserts the two side clamping rods (75) into the corresponding clamping holes (64), so that the X-axis galvanometer (42) and the Y-axis galvanometer (44) can be synchronously displaced, the relative position of the X-axis galvanometer (42) and the Y-axis galvanometer (44) is corrected in real time, and the drawing difficulty under high power load is further compensated, so as to reduce the continuous marking pressure.

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