Circuit board two-dimensional code automatic laser engraving machine

Abstract

The invention discloses a circuit board two-dimensional code automatic laser carving machine, and relates to the technical field of laser carving machines, the circuit board two-dimensional code automatic laser carving machine comprises a laser carving machine cabinet body, a working platform is arranged in the laser carving machine cabinet body, a laser carving rack is fixedly mounted on one side of the top surface of the working platform, and an electric control movable integrated support is fixedly mounted at the top of the laser carving rack through bolts; and laser etching operation equipment is detachably mounted on one side of the electric control movable integrated support in a sliding manner. Through the common arrangement of the elastic limiting rod, the electric control moving platform, the positioning frame and the top elastic extrusion rod, the position of a circuit board to be processed is rapidly fixed in multiple directions, transverse and longitudinal movement of the circuit board is limited through elastic contact, deviation caused by vibration or external force is avoided, the top elastic extrusion rod exerts uniform vertical pressure, and the machining precision is improved. And it is ensured that the circuit board is tightly attached to the surface of the platform, positioning errors caused by warping or gaps are reduced, and therefore laser etching position deviation caused by position deviation in the circuit board machining process is avoided.

Description

Technical Field

[0001] This invention relates to the field of laser engraving machine technology, specifically to an automatic laser engraving machine for QR codes on circuit boards. Background Technology

[0002] In the power control equipment manufacturing industry, PCB QR code information reading is used extensively and involves multiple stages. Traceability information is typically collected at the beginning of PCB production. The process mainly includes PCB silkscreen printing, serial peripheral interface testing, component surface mounting, reflow soldering, automatic optical inspection and debugging, etc. Laser engraving technology uses a laser engraving machine to etch the PCB surface layer with low power to form readable and valid information. The QR code contains technical information such as product barcode, model and version number.

[0003] In the existing technology, when a circuit board is transported to the laser engraving machine for QR code laser engraving, the conveying device is usually not equipped with a limiting device. Therefore, after the circuit board is transported into the laser engraving machine, the position of the circuit board and the laser engraving operation position are not on the same center line, which causes the circuit board to shift position during the processing operation and the QR code laser engraving position to deviate. To address this issue, we propose an automatic laser engraving machine for QR codes on circuit boards. Summary of the Invention

[0004] Technical problems to be solved In view of this, and to address the shortcomings of the prior art, the present invention provides an automatic laser engraving machine for QR codes on circuit boards, in order to solve the problems mentioned in the background art.

[0005] Technical solution To achieve the above objectives, the present invention provides the following technical solution: an automatic laser engraving machine for circuit board QR codes, including a laser engraving machine cabinet, an operating platform inside the laser engraving machine cabinet, a laser engraving machine frame fixedly installed on one side of the top surface of the operating platform, an electrically controlled movable integrated bracket fixedly installed on the top of the laser engraving machine frame by bolts, a laser engraving device detachably and slidably installed on one side of the electrically controlled movable integrated bracket, and also including a guide installation component, a plug-in positioning component, and an auxiliary component set on the operating platform; The guide installation assembly includes a slide rail fixedly installed on one side of the upper surface of the work platform. An electrically controlled moving platform is slidably installed on the surface of the slide rail. Slide cylinders are symmetrically fixedly installed on both sides of the upper surface of the electrically controlled moving platform. A moving frame plate is fixedly installed on the output shaft end of the two slide cylinders on the side closest to each other. Elastic limit rods are slidably installed at equal intervals inside the moving frame plate. The plug-in positioning component works in conjunction with the guide mounting component to quickly position the circuit board; The guide installation assembly includes a support frame symmetrically installed on the upper surface of the work platform. A positioning cylinder is fixedly installed at the middle of the top of each of the two support frames. The bottom output shaft ends of the two positioning cylinders are fixedly installed together with a positioning frame. A top elastic compression rod is slidably installed through the four corners of the inner surface of the positioning frame. During the process of the auxiliary components being plugged into and fitted with the guide mounting components, the surface of the circuit board is smoothed. The auxiliary components include support rods symmetrically fixedly installed on the upper surfaces of both sides of the positioning frame. Short shaft connecting rods are rotatably installed on the outer surface of the support rods in an axisymmetric manner, and long shaft connecting rods are rotatably installed on the ends of the short shaft connecting rods away from the support rods.

[0006] Preferably, the guide mounting assembly further includes a positioning plate symmetrically fixedly mounted on the upper surface of the middle part of the electrically controlled mobile platform, and push cylinders symmetrically fixedly mounted on the surfaces on both sides of the electrically controlled mobile platform, with sliders fixedly mounted on the top output shaft ends of the push cylinders.

[0007] Preferably, the guide installation assembly also includes plug-in positioning rods fixedly installed at the four corners of the bottom surface of the positioning frame, and plug-in positioning holes are symmetrically opened through the surface of the middle part of the electrically controlled moving platform.

[0008] Preferably, the auxiliary components also include roller connectors symmetrically slidably installed inside the positioning frame, with crossbars rotatably installed on the outer surfaces of both ends of the two roller connectors, and wedges fixedly installed on the upper surface of the electrically controlled moving platform in an axisymmetric manner.

[0009] Preferably, the middle part of the electrically controlled mobile platform is set as a mounting plate for snapping on the circuit board. The mounting plate has a snap-on groove for snapping on the circuit board. Sliding grooves are opened through the bottom of both sides of the snap-on groove on the mounting plate. Two sliding cylinders are set on both sides of the mounting plate. Positioning plates are fixedly installed on the upper surface of both sides of the mounting plate.

[0010] Preferably, the push cylinder is located at the bottom of both sides of the mounting plate, and the slider is slidably installed inside the sliding groove.

[0011] Preferably, the support frame is set on both sides of the slide rail, the positioning frame is set on the top of the mounting plate, and the size of the positioning frame is adapted to the mounting plate. The top elastic compression rod consists of a cylindrical rod with a rubber block at the bottom and a spring sleeved on the surface of the cylindrical rod.

[0012] Preferably, the insertion positioning holes are opened at the four corners of the mounting plate, and the insertion positioning rod is inserted and matched with the corresponding insertion positioning hole.

[0013] Preferably, a return spring is fixedly connected between the surface of the short shaft connecting rod and the corresponding long shaft connecting rod, and the roller connecting component consists of a frame plate and a roller rotatably installed inside the bottom end of the frame plate.

[0014] Preferably, the number of wedges is the same as the number of crossbars, and the surface of each wedge near the corresponding crossbar is set as an inclined plane.

[0015] Beneficial effects Compared with the prior art, the present invention provides an automatic laser engraving machine for QR codes on circuit boards, which has the following beneficial effects: By combining the elastic limiting rod, the electrically controlled moving platform, the positioning frame, and the top elastic pressing rod, the position of the circuit board to be processed is quickly fixed from multiple directions. The elastic contact restricts the lateral and longitudinal movement of the circuit board, avoiding displacement caused by vibration or external force. The top elastic pressing rod applies uniform vertical pressure to ensure that the circuit board is tightly attached to the platform surface, reducing positioning errors caused by warping or gaps, thereby avoiding laser engraving position deviation caused by positional shift during circuit board processing.

[0016] The design of the insertion positioning rod and insertion positioning hole facilitates the quick installation and fixation of the circuit board fixing device, thereby ensuring the positioning accuracy during each circuit board laser engraving and facilitating repetitive processing of the circuit board.

[0017] By using the roller connector, the surface of the circuit board is smoothed after the circuit board is positioned, making the surface flat and avoiding slight bending of the circuit board during transportation or clamping. Bending of the circuit board during transportation or clamping can cause the laser focus to shift. Roller smoothing controls the flatness of the board by applying uniform pressure, ensuring that the laser energy is accurately applied to the surface of the circuit board.

[0018] The elastic design of the top elastic compression rod and the elastic limiting rod will not affect the smoothing operation of the circuit board by the roller connector, nor will it affect the slight deformation of the circuit board after smoothing, thus quickly adjusting the flatness of the circuit board surface. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention; Figure 2 This is a schematic diagram of the top structure of the work platform of the present invention; Figure 3 This is a schematic diagram of the structure of the laser engraving equipment of the present invention; Figure 4 This is a schematic diagram showing the positional relationship of the slide rail in this invention; Figure 5 This is a schematic diagram showing the positional relationship at the positioning frame of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle; Figure 7This is a schematic diagram of the top plane of the electrically controlled mobile platform of the present invention; Figure 8 This is a schematic diagram showing the positional relationship of the support rod in this invention; Figure 9 This is a schematic diagram of the connection relationship at the slider of the present invention; Figure 10 This is a schematic diagram of the connection relationship at the insertion and positioning rod of the present invention.

[0020] In the diagram: 11. Laser engraving machine cabinet; 12. Working platform; 13. Laser engraving machine frame; 14. Electrically controlled mobile integrated support; 15. Laser engraving equipment; 21. Slide rail; 22. Electrically controlled moving platform; 23. Slide cylinder; 24. Moving frame plate; 25. Elastic limit rod; 26. Positioning plate; 27. Push cylinder; 28. Slider; 31. Support frame; 32. Positioning cylinder; 33. Positioning frame; 34. Top elastic compression rod; 35. Insertion positioning rod; 36. Insertion positioning hole; 41. Support rod; 42. Short shaft connecting rod; 43. Long shaft connecting rod; 44. Roller connector; 45. Crossbar; 46. Wedge block. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Embodiments of the present invention Please see Figures 1 to 10 An automatic laser engraving machine for QR codes on circuit boards includes a laser engraving machine cabinet 11, an operating platform 12 inside the laser engraving machine cabinet 11, a laser engraving machine frame 13 fixedly installed on one side of the top surface of the operating platform 12, an electrically controlled movable integrated bracket 14 fixedly installed on the top of the laser engraving machine frame 13 by bolts, and a laser engraving device 15 detachably and slidably installed on one side of the electrically controlled movable integrated bracket 14. It also includes a guide mounting component, a plug-in positioning component, and auxiliary components disposed on the operating platform 12.

[0023] The guide installation assembly includes a slide rail 21 fixedly installed on one side of the upper surface of the work platform 12. An electrically controlled moving platform 22 is slidably installed on the surface of the slide rail 21. Slide cylinders 23 are symmetrically fixedly installed on both sides of the upper surface of the electrically controlled moving platform 22. A moving frame plate 24 is fixedly installed on the output shaft end of the two slide cylinders 23 that are close to each other. Elastic limit rods 25 are slidably installed at equal intervals inside the moving frame plate 24.

[0024] The guide installation assembly also includes a positioning plate 26 symmetrically fixedly installed on the upper surface of the middle part of the electrically controlled mobile platform 22, and push cylinders 27 symmetrically fixedly installed on the surfaces on both sides of the electrically controlled mobile platform 22. Slider 28 is fixedly installed on the top output shaft end of each push cylinder 27.

[0025] The electric control mobile platform 22 has a mounting plate in the middle for mounting circuit boards. The mounting plate has a mounting groove for mounting circuit boards. Sliding grooves are provided on both sides of the mounting plate at the bottom of the mounting groove. Two sliding cylinders 23 are located on both sides of the mounting plate. Positioning plates 26 are fixedly installed on the upper surfaces of both sides of the mounting plate.

[0026] The push cylinder 27 is located at the bottom of both sides of the mounting plate, and the slider 28 is slidably installed inside the sliding groove.

[0027] The laser engraving machine cabinet 11 has a built-in control panel and PLC program, which are used to control the operation of existing equipment such as the electrical control integrated bracket, laser engraving equipment 15, and electrical control mobile platform 22.

[0028] Among them, the end of the elastic limit rod 25 away from the slide cylinder 23 is set as a rubber head, and a compression spring is sleeved on the surface of the elastic limit rod 25. One end of the compression spring is fixedly installed on the surface of the positioning plate 26, and the elastic limit rod 25 is slidably installed inside the positioning plate 26 at the corresponding position.

[0029] The slider 28 is used to push the circuit board out of the electrically controlled moving platform 22 after the laser engraving of the circuit board is completed.

[0030] Further embodiments Please see Figures 3 to 5 and Figures 8 to 10 The automatic laser engraving machine for QR codes on circuit boards also includes a plug-in positioning component. The plug-in positioning component works in conjunction with the guide mounting component to quickly position the circuit board.

[0031] The guide installation assembly includes a support frame 31 symmetrically installed on the upper surface of the work platform 12. A positioning cylinder 32 is fixedly installed at the middle of the top of each of the two support frames 31. A positioning frame 33 is fixedly installed at the bottom output shaft end of the two positioning cylinders 32. A top elastic compression rod 34 is slidably installed through the four corners of the inner surface of the positioning frame 33.

[0032] The guide installation assembly also includes plug-in positioning rods 35 fixedly installed at the four corners of the bottom surface of the positioning frame 33, and plug-in positioning holes 36 symmetrically opened through the surface of the middle part of the electrically controlled moving platform 22.

[0033] The support frame 31 is located on both sides of the slide rail 21, the positioning frame 33 is located above the mounting plate, and the size of the positioning frame 33 is adapted to the mounting plate. The top elastic compression rod 34 consists of a cylindrical rod with a rubber block at the bottom and a spring sleeved on the surface of the cylindrical rod.

[0034] The insertion positioning holes 36 are located at the four corners of the mounting plate, and the insertion positioning rods 35 are inserted and matched with the corresponding insertion positioning holes 36.

[0035] Among them, the positioning frame 33 plate is a frame structure, which does not affect the laser engraving processing of the laser engraving equipment 15.

[0036] Further embodiments Please see Figures 5 to 9 The automatic laser engraving machine for QR codes on circuit boards also includes auxiliary components. These auxiliary components smooth the surface of the circuit board by being connected and matched with the positioning and guide mounting components.

[0037] The auxiliary components include support rods 41 that are symmetrically fixedly installed on the upper surfaces of both sides of the positioning frame 33. Short shaft connecting rods 42 are rotatably installed on the outer surface of the support rods 41 in an axisymmetric manner. Long shaft connecting rods 43 are rotatably installed on the ends of the short shaft connecting rods 42 that are away from the support rods 41.

[0038] The auxiliary components also include roller connectors 44 that are symmetrically slidably installed inside the positioning frame 33. Crossbars 45 are rotatably installed on the outer surfaces of both ends of the two roller connectors 44. Wedges 46 are fixedly installed on the upper surface of the electrically controlled moving platform 22 in an axisymmetric manner.

[0039] The end of the long shaft connecting rod 43 away from the short shaft connecting rod 42 is rotatably mounted on the upper surface of the corresponding roller connecting member 44.

[0040] Among them, a return spring is fixedly connected between the surface of the short shaft connecting rod 42 and the corresponding long shaft connecting rod 43. The roller connecting piece 44 consists of a frame plate and a roller rotatably installed inside the bottom end of the frame plate.

[0041] The number of wedges 46 is the same as the number of crossbars 45, and the surface of the wedges 46 near the corresponding crossbars 45 is set as an inclined plane.

[0042] Among them, the long shaft connecting rod 43 and the short shaft connecting rod 42 are used to limit the position of the roller connecting member 44, so as to facilitate the movement and reset of the roller connecting member 44, and the crossbar 45 is located on the movement trajectory of the wedge block 46.

[0043] The overall working process and principle of the above embodiments are as follows: Circuit board installation: The circuit board to be laser-engraved is transported to one side of the laser engraving machine cabinet 11 via an external conveyor mechanism, and then transported to the mounting plate in the middle of the electronically controlled mobile platform 22 via the external conveyor mechanism. The circuit board is then initially fixed by the snap-fit ​​slots opened on the mounting plate.

[0044] It should be noted that in the above process, the external conveying mechanism is set flush with the surface of the work platform 12 to facilitate the conveying of the circuit board to the electrically controlled mobile platform 22 to complete the laser engraving operation of the circuit board. At the same time, the electrically controlled mobile platform 22 can reciprocate on the surface of the slide rail 21, and this movement can be controlled by the PLC program built into the laser engraving machine cabinet 11. The above steps are all existing technologies, so they will not be described in detail here.

[0045] At this time, the circuit board located on the electronically controlled moving platform 22 will move on the slide rail 21 under the action of the electronically controlled moving platform 22 to directly below the laser engraving equipment 15, and then the laser engraving operation of the QR code on the surface of the circuit board will be completed by the laser engraving equipment 15.

[0046] Fixing the circuit board position: In the above process, after the circuit board is transported to the electrically controlled moving platform 22 via the external conveying mechanism, the output shaft end of the slide cylinder 23 will move towards the circuit board under the control of the PLC program built into the laser engraving machine cabinet 11. At this time, the moving frame plate 24 fixedly installed on the output shaft end of the slide cylinder 23 will move towards the circuit board on the surface of the electrically controlled moving platform 22. At the same time, the elastic limit rod 25 fixedly installed on the moving frame plate 24 will move accordingly until the surface of the elastic limit rod 25 contacts the surface of the circuit board, completing the initial positioning operation of the circuit board.

[0047] When the circuit board moves with the electronically controlled mobile platform 22 to below the laser engraving equipment 15, the positioning cylinder 32 located on the support frame 31 will be activated, and the bottom output shaft end of the positioning cylinder 32 will cause the positioning frame 33 to move closer to the electronically controlled mobile platform 22.

[0048] It should be noted that during the above process, the four corners of the bottom of the positioning frame 33 will simultaneously move towards the electric mobile platform 22. Since the number and size of the positioning rods 35 and the positioning holes 36 are compatible, and the positioning rods 35 and the positioning holes 36 are compatible for insertion, when the positioning rods 35 move towards the electric mobile platform 22, when the bottom surface of the positioning frame 33 contacts the surface of the electric mobile platform 22, the positioning rods 35 will be inserted and installed inside the positioning holes 36, thus completing the insertion and installation of the positioning frame 33 and the electric mobile platform 22.

[0049] During this process, the starting of the positioning cylinder 32 is controlled by the PLC program built into the laser engraving machine cabinet 11, and the above steps are existing technology, so they will not be described in detail here.

[0050] Meanwhile, after the positioning frame 33 is fully engaged with the surface of the electronically controlled moving platform 22, the top elastic compression rod 34 located inside the positioning frame 33 will then contact the top of the four edges of the circuit board, thereby applying an elastic resisting force to the four corners of the circuit board surface, further completing the positioning of the circuit board.

[0051] Smoothing the surface of the circuit board: As the positioning frame 33 moves closer to the electrically controlled moving platform 22, the roller connector 44 and the crossbar 45 on the positioning frame 33 will move closer to the electrically controlled moving platform 22 simultaneously. At this time, the wedge 46 on the electrically controlled moving platform 22 will also gradually come into contact with the surface of the crossbar 45. Since the surface of the wedge 46 near the corresponding position of the crossbar 45 is set as an inclined plane, when the top of the inclined plane of the wedge 46 comes into contact with the surface of the crossbar 45, as the positioning frame 33 and the electrically controlled moving platform 22 gradually move closer, the crossbar 45 will move along the inclined plane of the wedge 46 and will be continuously pressed by the inclined plane of the wedge 46 during the movement.

[0052] During the above process, the crossbar 45 is squeezed by the wedge block 46 and will gradually move away from the center of the positioning frame 33. Since the positioning frame 33 has a transverse moving groove for the roller connector 44 to move, the roller connector 44 will move laterally within the positioning frame 33 under the restriction of the transverse moving groove.

[0053] It should be noted that the roller surface at the bottom of the roller connector 44 is set with an elastic rubber layer. Therefore, after the roller connector 44 moves laterally and comes into contact with the surface of the circuit board, it will move in close contact with the surface of the circuit board and apply a rolling downward rolling pressure to the surface of the circuit board, thereby smoothing the surface of the circuit board and avoiding slight deformation during the transportation and positioning of the circuit board, thus ensuring the flatness of the circuit board surface.

[0054] During the above process, the long shaft connecting rod 43, which is rotatably connected to the top of the roller connector 44, will move accordingly, and the position change of the long shaft connecting rod 43 will pull the position change of the short shaft connecting rod 42. At this time, the return spring fixedly installed between the long shaft connecting rod 43 and the short shaft connecting rod 42 will undergo elastic tensile deformation.

[0055] Finally, through the PLC program and control panel of the laser engraving machine cabinet 11, the electrically controlled mobile integrated bracket 14 is moved on the laser engraving machine frame 13, so that the laser engraving equipment 15 is moved to the position of the circuit board to be laser engraved with QR codes, and the QR code laser engraving operation on the surface of the circuit board is completed by the laser engraving equipment 15.

[0056] It should be noted that the starting of the electrically controlled mobile integrated support 14 and the laser engraving equipment 15 in the above process are existing technologies, so they will not be described in detail here.

[0057] After the laser engraving of the circuit board is completed, the output shaft of the positioning cylinder 32 will retract, causing the positioning frame 33 to disengage from the electronically controlled moving platform 22 and return to its initial state. Subsequently, the electronically controlled moving platform 22 will continue to move on the surface of the slide rail 21 and move to the other end of the slide rail 21. At this time, the output shaft of the slide cylinder 23 will retract synchronously, causing the elastic limit rod 25 to lose its clamping and positioning of the circuit board, and simultaneously opening the push cylinder 27. The extension of the top output shaft of the push cylinder 27 will push the slider 28 to move upward inside the electronically controlled moving platform 22, detaching the circuit board from the top of the snap-fit ​​slot on the electronically controlled moving platform 22, and then transporting the laser-engraved circuit board through the conveying mechanism set on the other side of the laser engraving machine cabinet 11. Subsequently, the electronically controlled moving platform 22 will move in the opposite direction on the surface of the slide rail 21, return to its initial position, and repeat the cycle to complete the batch laser engraving of the QR code on the circuit board.

[0058] It should be noted that, in this document, relational 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 these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic laser engraving machine for QR codes on circuit boards, comprising a laser engraving machine cabinet (11), an operating platform (12) provided inside the laser engraving machine cabinet (11), a laser engraving machine frame (13) fixedly installed on one side of the top surface of the operating platform (12), an electrically controlled movable integrated bracket (14) fixedly installed on the top of the laser engraving machine frame (13) by bolts, and a laser engraving device (15) detachably and slidably installed on one side of the electrically controlled movable integrated bracket (14), characterized in that: It also includes a guide installation component, a plug-in positioning component, and auxiliary components installed on the work platform (12); The guide installation assembly includes a slide rail (21) fixedly installed on one side of the upper surface of the work platform (12), an electrically controlled moving platform (22) slidably installed on the surface of the slide rail (21), and slide cylinders (23) symmetrically fixedly installed on both sides of the upper surface of the electrically controlled moving platform (22). A moving frame plate (24) is fixedly installed on the output shaft end of the two slide cylinders (23) on the side close to each other. Elastic limit rods (25) are equidistantly slidably installed inside the moving frame plate (24). The plug-in positioning component works in conjunction with the guide mounting component to quickly position the circuit board; The guide installation assembly includes a support frame (31) symmetrically installed on the upper surface of the work platform (12). A positioning cylinder (32) is fixedly installed at the middle of the top of each of the two support frames (31). A positioning frame (33) is fixedly installed at the bottom output shaft end of the two positioning cylinders (32). A top elastic compression rod (34) is slidably installed through the four corners of the inner surface of the positioning frame (33). During the process of the auxiliary components being plugged into and fitted with the guide mounting components, the surface of the circuit board is smoothed. The auxiliary components include support rods (41) that are symmetrically fixedly installed on the upper surfaces of both sides of the positioning frame (33). The outer surface of the support rods (41) is axially symmetrically mounted with short shaft connecting rods (42), and the end of the short shaft connecting rods (42) away from the support rods (41) is rotatably mounted with a long shaft connecting rod (43).

2. The automatic laser engraving machine for QR codes on circuit boards according to claim 1, characterized in that: The guide installation assembly also includes a positioning plate (26) symmetrically fixedly installed on the upper surface of the middle part of the electrically controlled mobile platform (22), and push cylinders (27) symmetrically fixedly installed on the surfaces on both sides of the electrically controlled mobile platform (22). Slider (28) is fixedly installed on the top output shaft end of each push cylinder (27).

3. The automatic laser engraving machine for QR codes on circuit boards according to claim 1, characterized in that: The guide installation assembly also includes plug-in positioning rods (35) fixedly installed at the four corners of the bottom surface of the positioning frame (33), and plug-in positioning holes (36) are symmetrically opened through the surface of the middle part of the electrically controlled moving platform (22).

4. The automatic laser engraving machine for QR codes on circuit boards according to claim 1, characterized in that: The auxiliary components also include roller connectors (44) that are symmetrically slidably installed inside the positioning frame (33). The outer surfaces of both ends of the two roller connectors (44) are rotatably mounted with crossbars (45), and the upper surface of the electrically controlled moving platform (22) is fixedly mounted with wedges (46) in an axisymmetric manner.

5. The automatic laser engraving machine for QR codes on circuit boards according to claim 3, characterized in that: The middle part of the electric control mobile platform (22) is set as a mounting plate for snapping on the circuit board. The mounting plate has a snap-on groove for snapping on the circuit board. Sliding grooves are opened through the bottom of both sides of the snap-on groove on the mounting plate. Two slide cylinders (23) are set on both sides of the mounting plate. The positioning plates (26) are fixedly installed on the upper surface of both sides of the mounting plate.

6. The automatic laser engraving machine for QR codes on circuit boards according to claim 5, characterized in that: The push cylinder (27) is located at the bottom of both sides of the mounting plate, and the slider (28) is slidably installed inside the sliding groove.

7. The automatic laser engraving machine for QR codes on circuit boards according to claim 1, characterized in that: The support frame (31) is set on both sides of the slide rail (21), the positioning frame (33) is set on the top of the mounting plate, and the size of the positioning frame (33) is adapted to the mounting plate. The top elastic compression rod (34) consists of a cylindrical rod with a rubber block at the bottom and a spring sleeved on the surface of the cylindrical rod.

8. The automatic laser engraving machine for QR codes on circuit boards according to claim 5, characterized in that: The insertion positioning holes (36) are opened at the four corners of the mounting plate, and the insertion positioning rod (35) is inserted and matched with the corresponding insertion positioning hole (36).

9. The automatic laser engraving machine for QR codes on circuit boards according to claim 4, characterized in that: A return spring is fixedly connected between the surface of the short shaft connecting rod (42) and the corresponding long shaft connecting rod (43). The roller connecting piece (44) consists of a frame plate and a roller rotatably installed inside the bottom end of the frame plate.

10. The automatic laser engraving machine for QR codes on circuit boards according to claim 4, characterized in that: The number of wedges (46) is the same as the number of crossbars (45), and the surface of the wedges (46) on the side of the crossbar (45) near the corresponding position is set as an inclined plane.

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