Laser engraving device and beam quality detection method

Abstract

The present invention discloses a laser engraving device and a beam quality detection method, which belongs to the field of laser engraving calibration technology, including a laser transmitter, a laser head, a rotating rod and a laser timing positioning and calibration mechanism; wherein the laser timing positioning and calibration mechanism includes a gear, a rack, a sleeve block, a screw and a slide frame; and also includes a laser offset self-checking and calibration mechanism and a laser multi-point intensity self-checking and calibration mechanism. The present invention has the advantages of timely providing self-checking and calibration data through the laser timing positioning and calibration mechanism, and maintenance personnel can quickly determine the cause of the fault according to the laser beam fault calibration data, greatly improving the maintenance efficiency of the laser engraving device in the later stage of processing, and greatly shortening the duration of the laser engraving device processing fault, thereby solving the problem that the laser engraving device cannot be quickly repaired, resulting in a significant reduction in the maintenance efficiency of the laser engraving device in the later stage of processing, and a significant extension of the duration of the laser engraving device processing fault.

Description

Technical Field

[0001] The invention relates to the technical field of laser engraving calibration, and in particular to a laser engraving device and a beam quality detection method. Background Art

[0002] The principle of laser engraving is mainly based on the interaction between laser and matter and the high energy density characteristics of laser beam. First of all, the generation of laser: laser is generated by laser, and the atoms or molecules are in a high energy state through specific excitation methods such as electrical excitation, optical excitation, and thermal excitation. When these atoms or molecules in the high energy state transition back to the low energy level, photons are released. These photons are reflected, amplified and focused inside the laser, and finally form a high-intensity laser beam, so as to realize laser engraving and laser etching operations on the workpiece, thereby leaving the specified image.

[0003] In the existing public documents, the utility model patent with patent announcement number CN217727504U discloses an engraving head for a laser engraving machine. The technology has a connecting block connected between two sliders, a connecting rod connected to the lower end of the connecting block, an engraving head body connected to the lower end of the connecting rod, and a connecting assembly connected to the lower end of the connecting block. The engraving head body in the utility model is easy to adjust the horizontal position and height position, making the entire engraving head more flexible, and the engraving head body in the engraving head is easy to replace, which improves the practicality of the entire engraving head. However, the technology still has the following problems.

[0004] The laser engraving device mainly generates a laser beam to contact and etch the workpiece. During the laser beam processing, there will be laser intensity failures at different positions, and there will also be failures at the vertical offset position of the laser beam. This will lead to failure problems in laser beam etching, and it is difficult to perform self-checking and calibration on the intensity of different positions of the laser beam at a timely and synchronous manner, and it is difficult to perform accurate self-checking and calibration on different offset positions of the laser beam at a timely manner. As a result, after the laser engraving device fails, it is difficult to know its own failure problem in a timely and accurate manner. Therefore, the laser beam failure problem is not discovered until multiple workpieces are completed, which not only wastes the workpiece cost, but also requires maintenance personnel to arrive at the site and perform fault point detection and identification one by one. It is difficult to provide self-checking and calibration data for laser beam processing, and it takes a long time to complete the maintenance of the laser engraving device. Therefore, the post-maintenance efficiency of the laser engraving device during processing is low, and the failure duration of the laser engraving device during processing is long. Therefore, a laser engraving device and a beam quality detection method are needed. Summary of the invention

[0005] To this end, the present invention provides a laser engraving device, including a laser transmitter, the bottom end of the laser transmitter is fixedly connected to a laser head, one side of the outer wall of the laser head is rotatably connected to a rotating rod, and the outer wall of the rotating rod is provided with a laser timing positioning and proofreading mechanism; the laser timing positioning and proofreading mechanism includes a gear fixedly arranged on the outer wall of the rotating rod, the outer wall of the gear is meshingly connected to a rack, the upper surface of the rack is fixedly connected to a sleeve block, and the inner wall of the sleeve block is threadedly connected to a screw; the outer wall of the sleeve block is slidably connected to a sliding frame, and the sliding frame is rotatably connected to the screw, so that A first micro motor is fixedly installed at one end of the sliding frame, and the first micro motor is used to drive the screw to rotate. A socket block is fixedly connected to one side of the gear, and a linkage bar is fixedly installed on the lower surface of the socket block; a positioning groove block is slidably connected to one side of the outer wall of the linkage bar, and a positioning sensor is fixedly installed on the inner wall of the positioning groove block; a support bar is fixedly connected to one side of the positioning groove block, and the support bar is fixedly connected to the laser head; a laser offset self-checking and calibration mechanism is provided at the bottom end of the linkage bar; a laser multi-point intensity self-checking and calibration mechanism is provided on the other side of the outer wall of the linkage bar.

[0006] Preferably, the outer wall of the sleeve block and the inner wall of the sliding frame are both smooth surfaces, and the output end of the first micro-motor is fixedly connected to the screw rod; the sleeve block is fixedly connected to the rotating rod. A support block is provided on the upper surface of the sliding frame, and the laser head and the sliding frame are fixedly connected to the support block. A connecting plate fixedly connected to the laser head is provided above the sleeve block, and a wireless controller is fixedly installed on one side of the connecting plate; an angle sensor is fixedly installed on the bottom end of the connecting plate, and the output end of the angle sensor is fixedly connected to the rotating rod; a mounting plate is fixedly connected to one side of the laser emitter.

[0007] When this technology is used, after the laser beam processing self-check calibration time is reached, the first micro motor is started through the wireless controller, the first micro motor drives the screw to rotate forward, the sleeve block moves left along the inner wall of the slide frame, the sleeve block drives the rack to move left, the gear drives the rotating rod to rotate counterclockwise, the gear drives the sleeve block to rotate counterclockwise, the linkage bar slides along the inner wall of the positioning slot block, and the positioning slot block limits the linkage bar. At the same time, when the linkage bar contacts the sensing end of the positioning sensor, the distance value sensed by the positioning sensor is zero, and the angle sensor senses the angle of the rotating rod. When the angle value sensed by the angle sensor is zero, the first micro motor is turned off through the wireless controller to ensure that the center point of the position calibration hole and the bottom center point of the laser head are on the same vertical line.

[0008] Preferably, the laser offset self-checking and calibration mechanism comprises a ceramic orifice plate fixedly arranged at the bottom end of the linkage bar; a position calibration hole is provided inside the ceramic orifice plate, the cross-sectional shape of the position calibration hole is circular, the center point of the position calibration hole is in the same vertical line as the center point of the bottom end of the laser head, the outer wall of the position calibration hole is fixedly connected with two limit rings, a large tooth ring is rotatably connected between the two limit rings, and the large tooth ring is rotatably connected with the ceramic orifice plate; the outer wall of the large tooth ring is meshingly connected with a small tooth ring, the inner wall of the small tooth ring is fixedly connected with a rotating shaft, a second micro motor is fixedly installed at the bottom end of the rotating shaft, and a fixing bar is installed at the bottom end of the second micro motor; a sleeve plate is fixedly installed on the upper surface of the large tooth ring and located at one side of the limit ring, and a laser displacement distance sensor is fixedly installed inside the sleeve plate. The two limit rings are symmetrically arranged about the large tooth ring, and the cross-sectional shape of the limit ring is circular. The second micro motor and the linkage bar are both fixedly connected to the fixing bar, and the second micro motor is used to drive the rotating shaft to rotate.

[0009] When this technology is in use, the second micro motor drives the shaft to rotate, the small gear ring drives the large gear ring to rotate, the large gear ring rotates along the outer wall of the ceramic orifice plate, and the laser displacement distance sensor senses the distance of the laser beam at the position of the position calibration hole. When the laser displacement distance sensor rotates one circle, the laser displacement distance sensor will sense the longest distance and the shortest distance of the laser beam. When the difference between the two distances exceeds the calibration range set by the wireless controller, the specific value of the fault offset of the laser beam is known.

[0010] Preferably, the laser multi-point intensity self-checking and calibration mechanism includes a micro-positioning motor fixedly arranged on the other side of the outer wall of the linkage bar; the output end of the micro-positioning motor is fixedly connected with a position shifting shaft, and one end of the position shifting shaft is fixedly connected with a position shifting frame, both sides of the position shifting frame are slidably connected with slip rings, the inner wall of the slip ring is installed with a guide shaft, the two slip rings are fixedly connected with the guide shaft, and the guide shaft and the position shifting frame are slidably connected; a sleeve slider is fixedly installed at one end of the guide shaft, a bar code identifier is fixedly connected to one side of the sleeve slider, a guide column is slidably connected to the inner wall of the sleeve slider, and the guide column is fixedly connected to the linkage bar, and the sleeve slider is slidably connected to the linkage bar;

[0011] The bottom end of the sleeve slider is fixedly connected with a linkage plate, and a plurality of depth barcodes are arranged on one side of the linkage plate. The plurality of depth barcodes are fixedly connected to the linkage bar, and the plurality of depth barcodes are arranged equidistantly from top to bottom; a laser intensity sensor is fixedly installed at the bottom end of the linkage plate, and a gap is provided between the displacement frame and the sleeve slider, and the two slip rings are symmetrically arranged about the displacement frame, and the vertical cross-section shape of the two slip rings is a circular ring.

[0012] When this technology is in use, when the laser beam shines on the laser intensity sensor through the position calibration hole, the micro-positioning motor drives the position axis to rotate clockwise, and at the same time the position frame drives the guide axis to slide downward, and the sleeve slider can slide downward along the outer wall of the guide column, and the sleeve slider drives the linkage plate to move downward, and the sleeve slider will drive the barcode reader to move downward. When the barcode reader moves to the first depth barcode position, it identifies the depth position value on the first depth barcode and the laser beam intensity value set here. When the intensity detected by the laser intensity sensor is the intensity value set by the wireless controller, the wireless controller continues to start the micro-positioning motor to drive the position axis to rotate clockwise, and the sleeve slider continues to drive the barcode reader to move downward to the second depth barcode position. When the laser intensity sensor sensing value is the same as the intensity value set by the wireless controller, the micro-positioning motor is started again to drive the position axis to rotate clockwise, and the barcode reader continues to identify the third depth barcode. When the laser beam intensity values ​​identified at the three depth barcode positions are different from those sensed by the laser intensity sensor, there is a laser intensity fault in the laser beam at this position, and the fault depth position can be accurately known, as well as the specific difference between the laser intensity value at this depth position and the standard value.

[0013] A method for detecting light beam quality, the method comprising the following steps:

[0014] Step 1: During the laser timing positioning calibration, the first micro motor drives the screw to rotate forward, and the rotating rod rotates counterclockwise on the laser head to ensure that the center point of the position calibration hole and the bottom center point of the laser head are in the same vertical line;

[0015] Step 2: During the laser offset self-check and calibration, the second micro motor drives the shaft to rotate, and the laser displacement distance sensor will sense the longest distance and the shortest distance of the laser beam. If the difference exceeds the set value, there is a problem with the beam quality.

[0016] Step 3: During the self-check and calibration of the laser multi-point intensity, the wireless controller starts the micro-positioning motor. When the sensed intensity value is different from the intensity value set by the wireless controller, there is a problem with the beam quality.

[0017] The present invention has the following advantages:

[0018] 1. The present invention uses a laser timing positioning and proofreading mechanism. When the self-checking and proofreading time is reached, the first micro motor is started through a wireless controller. The first micro motor drives the screw to rotate forward, and the screw sleeve block moves left under the action of the thread transmission force. The gear drives the rotating rod to rotate counterclockwise, and the sleeve block drives the linkage bar to rotate counterclockwise. When the linkage bar contacts the sensing end of the positioning sensor, the distance value sensed by the positioning sensor is zero, and the angle value sensed by the angle sensor is zero, the wireless controller turns off the first micro motor to ensure that the center point of the position proofreading hole and the bottom center point of the laser head are on the same vertical line, and can perform accurate self-checking and proofreading of the laser beam at a timely manner. The self-checking and proofreading data can be provided in time. The maintenance personnel can quickly determine the cause of the fault according to the laser beam fault data, thereby greatly reducing the maintenance time and quickly completing the maintenance of the laser engraving device. Therefore, the maintenance efficiency of the laser engraving device in the later stage of processing is greatly improved, and the duration of the laser engraving device processing fault is greatly shortened.

[0019] 2. The present invention uses a laser offset self-checking and proofreading mechanism. The laser beam moves downward along the position proofreading hole inside the ceramic orifice plate. The wireless controller starts the second micro motor. The shaft drives the small gear ring to rotate. The small gear ring drives the large gear ring to rotate. The large gear ring rotates along the outer wall of the ceramic orifice plate. At the same time, the sleeve plate drives the laser displacement distance sensor to rotate. The laser displacement distance sensor senses the distance of the laser beam at the position of the position proofreading hole. After the laser displacement distance sensor rotates one circle, the laser displacement distance sensor senses a longest distance and a shortest distance of the laser beam. When the difference between the two distances is zero, the laser beam has not undergone an offset failure. When the difference between the two distances exceeds a set difference, the laser beam has undergone an offset failure. The specific value of the laser beam offset failure is known in time, and the self-checking and proofreading data of the laser beam offset failure can be provided in time. The maintenance personnel can quickly determine the cause of the failure based on the laser beam failure data. The maintenance efficiency of the laser engraving device in the later stage of processing is greatly improved, and the duration of the laser engraving device processing failure is greatly shortened.

[0020] 3. The present invention uses a laser multi-point intensity self-checking and calibration mechanism. The laser beam is irradiated on the laser intensity sensor through the position calibration hole. The micro-positioning motor drives the position-changing shaft to rotate clockwise. The position-changing shaft drives the two slip rings to slide downward. The sleeve slider can slide downward along the outer wall of the guide column. The sleeve slider drives the linkage plate to move downward. The barcode identifier moves to the first depth barcode position, identifies the depth position value and the laser beam intensity value set here, and then continues to collect the depth value on the second depth barcode and the laser beam intensity value at this position. The barcode identifier continues to identify the third depth barcode. When the laser beam intensity values ​​identified at the three depth barcode positions are different from those sensed by the laser intensity sensor, the laser beam has a laser intensity fault at this position. The fault depth position can be accurately known, and the specific difference between the laser intensity value at this depth position and the standard value can be accurately known. The self-checking and calibration data of the intensity faults of the laser beam at different points can be provided in time. The maintenance personnel can quickly determine the cause of the fault based on the laser beam fault data. The maintenance efficiency of the laser engraving device in the later stage of processing is greatly improved, and the duration of the laser engraving device processing fault is greatly shortened.

[0021] The interaction of the above-mentioned multiple functions first ensures that the center point of the position calibration hole and the center point of the bottom end of the laser head are in the same vertical line at the specified time, and can regularly locate and accurately self-check and calibrate the laser beam. At the same time, it can timely know the specific value of the fault offset of the laser beam, and at the same time know that there is a laser intensity fault at this position of the laser beam, and can accurately know the depth position of the fault, and accurately know the specific difference between the laser intensity value at this depth position and the standard value. In summary, the self-check and calibration data of the laser beam offset fault and the self-check and calibration data of the laser beam intensity fault at different points can be provided in time. The maintenance personnel can quickly determine the cause of the fault based on the laser beam fault data, thereby greatly reducing the maintenance time and quickly completing the maintenance of the laser engraving device. Therefore, the maintenance efficiency of the laser engraving device in the later stage of processing is greatly improved, and the duration of the fault of the laser engraving device processing is greatly shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0024] Figure 1 This is a schematic diagram of the main structure of the laser engraving device of the present invention;

[0025] Figure 2 It is a schematic diagram of the partial structure of the connection between the laser head and the rotating rod of the present invention;

[0026] Figure 3 It is a schematic diagram of a partial structure of the connection between the rotating rod and the gear of the present invention;

[0027] Figure 4 This is a schematic diagram of the partial structure of the main view of the connection between the positioning groove block and the positioning sensor of the present invention;

[0028] Figure 5 A schematic diagram of the cross-sectional top view of the laser engraving device of the present invention;

[0029] Figure 6 It is a schematic diagram of the cross-section structure of the laser engraving device of the present invention when viewed from above;

[0030] Figure 7 It is a schematic diagram of the partial structure of the cross section of the connection between the linkage bar and the micro-positioning motor of the present invention;

[0031] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0032] Fig. 9 It is a schematic diagram of a partial structure of the connection between the laser intensity sensor and the linkage plate of the present invention;

[0033] In the figure: 1, laser transmitter; 2, laser head; 3, gear; 4, rack; 5, sleeve block; 6, screw; 7, slide frame; 8, first micro motor; 9, sleeve block; 10, linkage bar; 11, positioning slot block; 12, positioning sensor; 13, support bar; 14, support block; 15, connecting plate; 16, wireless controller; 17, angle sensor; 18, mounting plate; 19, ceramic orifice plate; 20, position calibration hole; 21, limit ring; 22. Large gear ring; 23. Small gear ring; 24. Rotating shaft; 25. Second micro motor; 26. Fixed bar; 27. Sleeve plate; 28. Laser displacement distance sensor; 29. ​​Micro displacement motor; 30. Displacement shaft; 31. Displacement frame; 32. Slip ring; 33. Guide shaft; 34. Sleeve slider; 35. Barcode reader; 36. Guide column; 37. Linkage plate; 38. Depth barcode; 39. Laser intensity sensor; 40. Rotating rod. DETAILED DESCRIPTION

[0034] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.

[0035] As attached Figure 1 - Attachment Fig. 9 A laser engraving device is shown, which is provided with a laser timing positioning calibration mechanism, a laser offset self-checking calibration mechanism, and a laser multi-point strength self-checking calibration mechanism. The settings of each mechanism and component can timely provide self-checking calibration data of laser beam offset failure and timely provide self-checking calibration data of laser beam intensity failure at different points. The maintenance personnel can quickly determine the cause of the failure based on the laser beam failure data, thereby greatly reducing the maintenance time and quickly completing the maintenance of the laser engraving device. Therefore, the maintenance efficiency of the laser engraving device in the later stage of processing is greatly improved, and the duration of laser engraving failure is greatly shortened. The specific structural settings of each mechanism and component are as follows:

[0036] In this embodiment, as shown in the attached Figure 1 - Attachment Figure 4As shown, the laser timing positioning and correction mechanism includes a gear 3 fixedly arranged on the outer wall of the rotating rod 40, the outer wall of the gear 3 is meshingly connected with a rack 4, the upper surface of the rack 4 is fixedly connected with a sleeve block 5, and the inner wall of the sleeve block 5 is threadedly connected with a screw 6; the outer wall of the sleeve block 5 is slidably connected with a slide frame 7, the slide frame 7 and the screw 6 are rotatably connected, one end of the slide frame 7 is fixedly installed with a first micro motor 8, the first micro motor 8 is used to drive the screw 6 to rotate, one side of the gear 3 is fixedly connected with a sleeve block 9, and the lower surface of the sleeve block 9 is fixedly installed with a linkage bar 10; one side of the outer wall of the linkage bar 10 is slidably connected with a positioning groove block 11, the inner wall of the positioning groove block 11 is fixedly installed with a positioning sensor 12, one side of the positioning groove block 11 is fixedly connected with a support bar 13, and the support bar 13 is fixedly connected to the laser head 2; the bottom end of the linkage bar 10 is provided with a laser offset self-checking and correction mechanism; the other side of the outer wall of the linkage bar 10 is provided with a laser multi-point intensity self-checking and correction mechanism.

[0037] In this embodiment, as shown in the attached Figure 1 - Attachment Figure 3 As shown, a support block 14 is provided on the upper surface of the slide frame 7, and the laser head 2 and the slide frame 7 are fixedly connected to the support block 14, so that the laser head 2 supports the support block 14, and the support block 14 supports the slide frame 7, thereby increasing the stability of the slide frame 7. A connecting plate 15 fixedly connected to the laser head 2 is provided above the sleeve block 5, and a wireless controller 16 is fixedly installed on one side of the connecting plate 15; an angle sensor 17 is fixedly installed on the bottom end of the connecting plate 15, and the output end of the angle sensor 17 is fixedly connected to the rotating rod 40; a mounting plate 18 is fixedly connected to one side of the laser transmitter 1, so that the mounting plate 18 is first docked on the laser engraving mobile machine, and the self-checking and calibration time is set by the wireless controller 16. When the self-checking and calibration time is reached, the first micro motor 8 is started by the wireless controller 16, and the laser head 2 supports the connecting plate 15, and the connecting plate 15 supports the angle sensor 17.

[0038] In this embodiment, as shown in the attached Figure 5 As shown, the laser offset self-checking and correcting mechanism includes a ceramic orifice plate 19 fixedly arranged at the bottom end of the linkage bar 10; a position correction hole 20 is opened inside the ceramic orifice plate 19, and the cross-sectional shape of the position correction hole 20 is circular, and the center point of the position correction hole 20 is on the same vertical line as the center point of the bottom end of the laser head 2, and the outer wall of the position correction hole 20 is fixedly connected to two limit rings 21, and a large tooth ring 22 is rotatably connected between the two limit rings 21, and the large tooth ring 22 is rotatably connected to the ceramic orifice plate 19; the outer wall of the large tooth ring 22 is meshingly connected to a small tooth ring 23, and the inner wall of the small tooth ring 23 is fixedly connected to a rotating shaft 24, and a second micro motor 25 is fixedly installed at the bottom end of the rotating shaft 24, and a fixing bar 26 is installed at the bottom end of the second micro motor 25.

[0039] A sleeve plate 27 is fixedly installed on the upper surface of the large toothed ring 22 and located on one side of the limit ring 21, and a laser displacement distance sensor 28 is fixedly installed inside the sleeve plate 27. The two limit rings 21 are symmetrically arranged about the large toothed ring 22, and the cross-sectional shape of the limit ring 21 is a circular ring. The second micro motor 25 and the linkage bar 10 are both fixedly connected to the fixed bar 26, and the second micro motor 25 is used to drive the rotating shaft 24 to rotate.

[0040] In this embodiment, as shown in the attached Figure 6 - Attachment Fig. 9 As shown, the laser multi-point intensity self-checking and calibration mechanism includes a micro-positioning motor 29 fixedly arranged on the other side of the outer wall of the linkage bar 10; the output end of the micro-positioning motor 29 is fixedly connected to a position-changing shaft 30, and one end of the position-changing shaft 30 is fixedly connected to a position-changing frame 31, both sides of the position-changing frame 31 are slidably connected to slip rings 32, the inner wall of the slip ring 32 is installed with a guide shaft 33, the two slip rings 32 are fixedly connected to the guide shaft 33, and the guide shaft 33 is slidably connected to the position-changing frame 31; one end of the guide shaft 33 is fixedly installed with a sleeve slider 34, A barcode reader 35 is fixedly connected to one side of the slider 34, a guide column 36 is slidably connected to the inner wall of the sleeve slider 34, and the guide column 36 is fixedly connected to the linkage bar 10, and the sleeve slider 34 is slidably connected to the linkage bar 10; a linkage plate 37 is fixedly connected to the bottom end of the sleeve slider 34, and a plurality of depth barcodes 38 are arranged on one side of the linkage plate 37, and the plurality of depth barcodes 38 are fixedly connected to the linkage bar 10, and the plurality of depth barcodes 38 are arranged equidistantly from top to bottom; a laser intensity sensor 39 is fixedly installed at the bottom end of the linkage plate 37. A gap is provided between the displacement frame 31 and the sleeve slider 34, and two slip rings 32 are symmetrically arranged about the displacement frame 31, and the vertical cross-section shape of the two slip rings 32 is circular.

[0041] The use process of the laser engraving device of the present invention is as follows:

[0042] First, when the present invention performs laser timing positioning calibration, the mounting plate 18 is first fixed and docked on the laser engraving mobile machine with bolts, and the laser beam processing self-check calibration time is set through the wireless controller 16. When the laser beam processing self-check calibration time is reached, the first micro motor 8 is started through the wireless controller 16, and the first micro motor 8 drives the screw 6 to rotate forward, and the screw 6 drives the sleeve block 5 to move left under the action of the thread transmission force, and the sleeve block 5 moves left along the inner wall of the slide frame 7. At the same time, the laser head 2 supports the support block 14, and the support block 14 supports the slide frame 7 to increase the stability of the slide frame 7. At the same time, the sleeve block 5 drives the rack 4 to move left, the rack 4 drives the gear 3 to rotate counterclockwise, the gear 3 drives the rotating rod 40 to rotate counterclockwise, and the rotating rod 40 rotates counterclockwise on the laser head 2.

[0043] At the same time, the gear 3 drives the socket block 9 to rotate counterclockwise, the socket block 9 drives the linkage bar 10 to rotate counterclockwise, the linkage bar 10 slides along the inner wall of the positioning groove block 11, and the support bar 13 is supported by the laser head 2, the support bar 13 supports the positioning groove block 11, and the positioning groove block 11 limits the linkage bar 10. At the same time, when the linkage bar 10 contacts the sensing end of the positioning sensor 12, the distance value sensed by the positioning sensor 12 is zero, and the angle sensor 17 senses the angle of the rotating rod 40. At the same time, the laser head 2 supports the connecting plate 15, and the connecting plate 15 supports the angle sensor 17. When the angle value sensed by the angle sensor 17 is zero, the first micro motor 8 is turned off through the wireless controller 16 to ensure that the center point of the position calibration hole 20 and the bottom center point of the laser head 2 are in the same vertical line, so as to perform a timed positioning calibration operation on the laser beam emitted by the laser head 2, turn on the laser emitter 1, and emit the laser beam downward along the laser head 2 through the laser emitter 1.

[0044] Secondly, when the present invention performs laser offset self-checking and calibration, the laser beam moves downward along the position calibration hole 20 inside the ceramic orifice plate 19, the wireless controller 16 starts the second micro motor 25, and the linkage bar 10 supports the fixed bar 26, the fixed bar 26 provides support force for the second micro motor 25, the second micro motor 25 drives the rotating shaft 24 to rotate, the rotating shaft 24 drives the small gear ring 23 to rotate, the small gear ring 23 drives the large gear ring 22 to rotate, the large gear ring 22 rotates between the two limit rings 21, the large gear ring 22 rotates along the outer wall of the ceramic orifice plate 19, and at the same time the sleeve plate 27 drives the laser displacement distance sensor 28 to rotate, the laser displacement distance sensor 28 performs distance sensing on the laser beam at the position of the position calibration hole 20, when the laser displacement distance sensor 28 rotates one circle, the laser displacement distance sensor 28 will sense a longest distance and a shortest distance of the laser beam, when the difference between the two distances is zero, the laser beam is in a vertical state and moves downward along the position calibration hole 20, then there is no offset problem in the laser beam position. When the difference between the two distances exceeds the calibration range set by the wireless controller 16, the specific fault offset value of the laser beam self-check calibration is known.

[0045] At the same time, when the laser multi-point position intensity self-checking and calibration is performed by the present invention, when the laser beam passes through the position calibration hole 20 and irradiates the laser intensity sensor 39, the micro-positioning motor 29 is started through the wireless controller 16, and the micro-positioning motor 29 drives the position shifting shaft 30 to rotate clockwise, and the position shifting shaft 30 drives the two slip rings 32 to slide downward, and at the same time, the position shifting frame 31 drives the guide shaft 33 to slide downward, and the guide shaft 33 drives the sleeve slider 34 to slide downward, and the sleeve slider 34 can guide the slide downward along the outer wall of the guide column 36, and the sleeve slider 34 can guide the slide downward along the outer wall of the guide column 36. At the same time, the sleeve slider 34 drives the linkage plate 37 to move downward, the linkage plate 37 drives the laser intensity sensor 39 to move downward, and the sleeve slider 34 will drive the barcode identifier 35 to move downward.

[0046] When the barcode reader 35 moves to the position of the first depth barcode 38, the depth position value on the first depth barcode 38 and the laser beam intensity value set therein are identified, and the micro-positioning motor 29 is turned off through the wireless controller 16, so that the laser intensity sensor 39 detects the laser intensity at the laser beam position at this time. When the intensity detected by the laser intensity sensor 39 is the intensity value set by the wireless controller 16, the micro-positioning motor 29 is continued to be started through the wireless controller 16 to drive the position shaft 30 to rotate clockwise, and the sleeve slider 34 continues to drive the barcode reader 35 downward to the second depth barcode 38 position, and continues to collect the depth value on the second depth barcode 38 and the laser beam intensity value at this position, and the driving of the micro-positioning motor 29 is stopped through the wireless controller 16.

[0047] When the sensing value of the laser intensity sensor 39 is the same as the intensity value set by the wireless controller 16, the micro-positioning motor 29 is started to drive the position-shifting shaft 30 to rotate clockwise, and the sleeve slider 34 continues to drive the barcode identifier 35 to move downward, and the barcode identifier 35 continues to identify the third depth barcode 38, identify the depth and the intensity value of this position, and then transmit the intensity value of the laser beam through the laser intensity sensor 39. When the intensity value of the sensing is the same as the intensity value set by the wireless controller 16, the laser intensity of the laser beam at different positions of multiple points is normal. When the laser beam intensity values ​​identified by the three depth barcodes 38 are different from those sensed by the laser intensity sensor 39, there is a laser intensity fault at the laser beam at this position, and the fault depth position can be accurately known, as well as the specific difference between the laser intensity value at this depth position and the standard value. In this way, the data is displayed on the wireless controller 16 and wirelessly sent to the maintenance technician remotely, so that the maintenance technician can quickly know the problem according to the specific fault value of the laser beam after arriving at the site, so as to quickly perform maintenance operations.

[0048] Then, when the present invention is reset, after the maintenance is completed, the first micro motor 8 drives the screw 6 to reverse, the screw 6 drives the sleeve 5 to move right under the action of the thread transmission force, the sleeve 5 moves right along the inner wall of the slide frame 7, the sleeve 5 drives the rack 4 to move right, the rack 4 drives the gear 3 to rotate clockwise, the gear 3 drives the rotating rod 40 to rotate clockwise, and the rotating rod 40 rotates clockwise on the laser head 2.

[0049] At the same time, the gear 3 drives the socket block 9 to rotate clockwise, the socket block 9 drives the linkage bar 10 to rotate counterclockwise, and the linkage bar 10 drives the ceramic orifice plate 19 to rotate clockwise to one side of the laser head 2. When the ceramic orifice plate 19 rotates ninety degrees, the angle of the rotating rod 40 is sensed by the angle sensor 17. When the angle value sensed by the angle sensor 17 is the same as the ninety-degree value set by the wireless controller 16, the first micro motor 8 is turned off by the wireless controller 16, so that the laser head 2 can perform laser etching operations normally.

[0050] Finally, when the present invention performs laser etching, the laser emitter 1 is turned on so that the laser beam is emitted to the workpiece through the laser head 2, thereby performing a laser etching operation on the workpiece.

[0051] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0052] The present invention has been described in detail above by general description and specific embodiments, but it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A laser engraving device, comprising a laser emitter (1), the bottom end of the laser emitter (1) being fixedly connected to a laser head (2), and one side of an outer wall of the laser head (2) being rotatably connected to a rotating rod (40), characterized in that: The outer wall of the rotating rod (40) is provided with a laser timing positioning and calibration mechanism; The laser timing positioning and calibration mechanism comprises a gear (3) fixedly arranged on the outer wall of a rotating rod (40); the outer wall of the gear (3) is meshingly connected to a rack (4); the upper surface of the rack (4) is fixedly connected to a sleeve block (5); the inner wall of the sleeve block (5) is threadedly connected to a screw rod (6); The outer wall of the sleeve block (5) is slidably connected to a sliding frame (7), the sliding frame (7) is rotationally connected to the screw rod (6), a first micro motor (8) is fixedly mounted on one end of the sliding frame (7), the first micro motor (8) is used to drive the screw rod (6) to rotate, a sleeve block (9) is fixedly connected to one side of the gear (3), and a linkage bar (10) is fixedly mounted on the lower surface of the sleeve block (9); A positioning groove block (11) is slidably connected to one side of the outer wall of the linkage bar (10), a positioning sensor (12) is fixedly installed on the inner wall of the positioning groove block (11), a support bar (13) is fixedly connected to one side of the positioning groove block (11), and the support bar (13) is fixedly connected to the laser head (2); A laser offset self-checking and calibration mechanism is provided at the bottom end of the linkage bar (10); A laser multi-point intensity self-checking and calibration mechanism is provided on the other side of the outer wall of the linkage bar (10).

2. The laser engraving device according to claim 1, characterized in that: The outer wall of the sleeve block (5) and the inner wall of the slide frame (7) are both smooth surfaces, and the output end of the first micro motor (8) is fixedly connected to the screw rod (6); The sleeve block (9) is fixedly connected to the rotating rod (40).

3. The laser engraving device according to claim 2, characterized in that: A support block (14) is provided on the upper surface of the sliding frame (7), and the laser head (2) and the sliding frame (7) are both fixedly connected to the support block (14).

4. The laser engraving device according to claim 3, characterized in that: A connecting plate (15) fixedly connected to the laser head (2) is provided above the sleeve block (5), and a wireless controller (16) is fixedly mounted on one side of the connecting plate (15); An angle sensor (17) is fixedly mounted on the bottom end of the connecting plate (15), and an output end of the angle sensor (17) is fixedly connected to the rotating rod (40); A mounting plate (18) is fixedly connected to one side of the laser emitter (1).

5. The laser engraving device according to claim 4, characterized in that: The laser offset self-checking and calibration mechanism comprises a ceramic orifice plate (19) fixedly arranged at the bottom end of the linkage bar (10); A position calibration hole (20) is provided inside the ceramic orifice plate (19), the cross-sectional shape of the position calibration hole (20) is circular, the center point of the position calibration hole (20) and the center point of the bottom end of the laser head (2) are located on the same vertical line, the outer wall of the position calibration hole (20) is fixedly connected to two limit rings (21), a large toothed ring (22) is rotatably connected between the two limit rings (21), and the large toothed ring (22) is rotatably connected to the ceramic orifice plate (19); The outer wall of the large gear ring (22) is meshingly connected to the small gear ring (23), the inner wall of the small gear ring (23) is fixedly connected to the rotating shaft (24), the bottom end of the rotating shaft (24) is fixedly mounted with a second micro motor (25), and the bottom end of the second micro motor (25) is mounted with a fixing bar (26); A sleeve plate (27) is fixedly mounted on the upper surface of the large toothed ring (22) and located on one side of the limiting ring (21), and a laser displacement distance sensor (28) is fixedly mounted inside the sleeve plate (27).

6. The laser engraving device according to claim 5, characterized in that: The two limiting rings (21) are symmetrically arranged with respect to the large toothed ring (22), and the cross-sectional shape of the limiting ring (21) is annular.

7. The laser engraving device according to claim 6, characterized in that: The second micro motor (25) and the linkage bar (10) are both fixedly connected to the fixed bar (26), and the second micro motor (25) is used to drive the rotating shaft (24) to rotate.

8. The laser engraving device according to claim 7, characterized in that: The laser multi-point intensity self-checking and calibration mechanism comprises a micro-positioning motor (29) fixedly arranged on the other side of the outer wall of the linkage bar (10); The output end of the micro-positioning motor (29) is fixedly connected to a position-changing shaft (30), and one end of the position-changing shaft (30) is fixedly connected to a position-changing frame (31), both sides of the position-changing frame (31) are slidably connected to slip rings (32), the inner wall of the slip ring (32) is installed with a guide shaft (33), the two slip rings (32) are fixedly connected to the guide shaft (33), and the guide shaft (33) is slidably connected to the position-changing frame (31); A sleeve slider (34) is fixedly mounted on one end of the guide shaft (33), a barcode reader (35) is fixedly connected to one side of the sleeve slider (34), a guide column (36) is slidably connected to the inner wall of the sleeve slider (34), the guide column (36) is fixedly connected to the linkage bar (10), and the sleeve slider (34) is slidably connected to the linkage bar (10); The bottom end of the sleeve sliding block (34) is fixedly connected to a linkage plate (37), a plurality of depth barcodes (38) are provided on one side of the linkage plate (37), the plurality of depth barcodes (38) are fixedly connected to the linkage bar (10), and the plurality of depth barcodes (38) are arranged in sequence and equidistantly from top to bottom; A laser intensity sensor (39) is fixedly mounted on the bottom end of the linkage plate (37).

9. The laser engraving device according to claim 8, characterized in that: A gap is provided between the displacement frame (31) and the sleeve sliding block (34); the two slip rings (32) are symmetrically arranged with respect to the displacement frame (31); and the vertical cross-sections of the two slip rings (32) are both in the shape of a circular ring.

10. A beam quality detection method, using the laser engraving device according to claim 9, characterized in that: The method comprises the following steps: Step 1: During laser timing positioning calibration, the first micro motor (8) drives the screw rod (6) to rotate forward, and the rotating rod (40) rotates counterclockwise on the laser head (2) to ensure that the center point of the position calibration hole (20) and the bottom center point of the laser head (2) are on the same vertical line; Step 2: During the laser offset self-check and calibration, the second micro motor (25) drives the rotating shaft (24) to rotate, and the laser displacement distance sensor (28) senses a maximum distance and a shortest distance of the laser beam. If the difference exceeds a set value, there is a problem with the beam quality; Step 3: During the self-check and calibration of the laser multi-point intensity, the wireless controller (16) starts the micro-positioning motor (29). When the intensity value sensed is different from the intensity value set by the wireless controller (16), there is a problem with the beam quality.

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