LED strip marking equipment

Abstract

This application relates to the technical field of LED light strip processing equipment, and discloses an LED light strip marking device, including a processing platform. A conveyor mechanism, specifically a conveyor belt type, is installed on the upper surface of the processing platform. The upper surface of the processing platform is fully welded with columns, and a laser is bolted to the side surface of each column. In this application, a flue pipe, in conjunction with a negative pressure fan, forms directional exhaust, quickly drawing the marking-generated fumes into a purification chamber. After being filtered through a multi-layer composite purification filter, the fumes are discharged, reducing the concentration of pollutants in the fumes. Meanwhile, a positive pressure fan introduces clean airflow into the protective cover through an air duct and a first nozzle, forming an air curtain between the laser emitting lens and the LED light strip. This prevents residual fumes that have not been promptly removed from approaching the lens. By reducing fumes adhesion, the marking quality degradation caused by high-temperature aging and energy consumption loss of the lens is reduced, extending the lens replacement cycle and reducing downtime for maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of LED light strip processing equipment, and in particular to an LED light strip marking device. Background Technology

[0002] As a core component in the field of energy-saving lighting and decoration, LED light strips require laser marking technology to mark information such as model, QR code, and production date on the surface or substrate during their production process. Due to its advantages such as non-contact, high precision, and high speed, laser marking has become a key process in the mass production of LED light strips.

[0003] However, when LED substrates are exposed to high-energy laser irradiation, they undergo high-temperature vaporization and decomposition reactions, producing fumes containing carbon particles, volatile organic compounds, and other components. These fumes have strong adhesion and easily diffuse into the equipment and deposit on the surface of the laser lens, thereby accelerating the aging of the laser lens. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an LED light strip marking device.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an LED light strip marking device, including a processing platform, a conveying mechanism installed on the upper surface of the processing platform, the conveying mechanism being a conveyor belt type conveyor, a column fully welded to the upper surface of the processing platform, a laser mounted on the side surface of the column by bolts, a laser emitting lens connected to the side surface of the laser, a protective cover installed between the laser emitting lens and the processing platform, a flue pipe connected through the side surface of the protective cover, a purification box connected through the side surface of the flue pipe, and a multi-layer composite purification filter installed inside the purification box, a negative pressure fan connected through the side surface of the purification box, a positive pressure fan connected to the outer side of the protective cover, the positive pressure fan connected to the air duct through a pipe, and first air nozzles evenly arranged on the side surface of the air duct.

[0006] By adopting the above technical solution, the flue pipe, together with the negative pressure fan, forms a directional exhaust system, which can quickly draw the marking fumes into the purification chamber. After being filtered by a multi-layer composite purification filter, the fumes are discharged, reducing the concentration of pollutants in the fumes. Meanwhile, the positive pressure fan introduces clean airflow into the protective cover through the air duct and the first air nozzle, forming an air curtain between the laser emitting lens and the LED light strip. This prevents residual fumes that have not been extracted in time from approaching the lens. By reducing the adhesion of fumes, the marking quality deterioration caused by high-temperature aging and energy consumption loss of the lens is reduced, extending the lens replacement cycle and reducing downtime for maintenance.

[0007] Furthermore, the side surface of the laser emitting lens is connected to a hollow annular air guide tube via a bracket, and a second air nozzle is connected to the inner side of the hollow annular air guide tube in an inclined direction. The side surface of the hollow annular air guide tube is connected to the air duct via a pipe.

[0008] By adopting the above technical solution, the air-guiding annular hollow tube is set around the laser emitting lens, and with the evenly distributed second air nozzles, an annular airflow can be formed on the lens surface. The airflow is ejected at high speed from the air nozzles, which can quickly remove the heat generated by the laser irradiation of the lens, reduce the lens temperature, directly delay the aging of the coating caused by high temperature, and further extend the lens replacement cycle.

[0009] Furthermore, a fixing sleeve is fixed to the side surface of the processing platform by bolts, a C-shaped frame is slidably connected to the surface of the fixing sleeve, and a limit plate is welded to the end of the C-shaped frame. A damping spring is sleeved on the surface of the C-shaped frame, and a tension roller is connected to the inner side of the C-shaped frame through a sealed bearing seat.

[0010] By adopting the above technical solution, the C-shaped frame is elastically connected to the fixed sleeve through a damping spring, and the tension roller can automatically adjust its height according to the thickness of the light strip and the conveying tension to avoid the light strip from becoming loose or overstretched, thus ensuring the stability of the workpiece position during marking.

[0011] Furthermore, the protective cover has an observation window on its front side, with a scratch-resistant layer on the outer side and an anti-glare layer on the inner side.

[0012] By adopting the above technical solutions, the anti-scratch layer improves the wear resistance of the observation window surface, avoids scratches caused by wiping and collision during daily operation, and ensures clear observation over a long period of time. The anti-glare layer reduces the glare formed on the window surface by laser reflection light and ambient light, enabling operators to clearly observe marking details (such as character clarity and positional accuracy), making it easier to adjust parameters in a timely manner and reduce the defect rate.

[0013] Furthermore, the air inlet of the positive pressure fan is equipped with a fine metal filter.

[0014] By adopting the above technical solution, the fine metal filter can intercept dust, fibers and other particulate matter in the air, preventing the airflow drawn in by the positive pressure fan from carrying pollutants into the protective cover and preventing secondary contamination of the laser lens or the surface of the marked workpiece.

[0015] Furthermore, an integrated controller is bolted to the front of the processing platform.

[0016] By adopting the above technical solution, the integrated controller can integrate control modules such as laser power, conveying speed, negative / positive pressure fan air volume, and marking pattern parameters, so as to realize the coordinated operation of various components.

[0017] In summary, this utility model has the following beneficial effects: 1. In this application, the flue pipe, in conjunction with the negative pressure fan, forms a directional exhaust system, which can quickly draw the marking-generated fumes into the purification box. After being filtered by a multi-layer composite purification filter, the fumes are discharged, reducing the concentration of pollutants in the fumes. Meanwhile, the positive pressure fan introduces clean airflow into the protective cover through the air duct and the first air nozzle, forming an air curtain between the laser emitting lens and the LED light strip. This prevents residual fumes that have not been extracted in time from approaching the lens. By reducing the adhesion of fumes, the marking quality degradation caused by high-temperature aging and energy consumption loss of the lens is reduced, extending the lens replacement cycle and reducing downtime for maintenance. 2. In this application, the air-guiding annular hollow tube is arranged around the laser emitting lens, and with the uniformly distributed second air nozzles, an annular airflow can be formed on the lens surface. The airflow is ejected at high speed from the air nozzles, which can quickly remove the heat generated by the laser irradiation of the lens, reduce the temperature of the lens, directly delay the aging of the coating caused by high temperature, and further extend the lens replacement cycle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the protective cover and its connection structure according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the purification box and its connection structure according to an embodiment of the present utility model.

[0019] In the diagram: 1. Processing platform; 2. Conveying mechanism; 3. Column; 4. Laser; 5. Laser emitting lens; 6. Protective cover; 7. Flue; 8. Purification box; 9. Multi-layer composite purification filter; 10. Negative pressure fan; 11. Positive pressure fan; 12. Air duct; 13. First air nozzle; 14. Observation window; 15. Air guide annular hollow tube; 16. Second air nozzle; 17. Integrated controller; 18. Tensioning roller; 19. C-shaped frame; 20. Fixing sleeve; 21. Limiting plate; 22. Damping spring. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] like Figure 1-3As shown in the embodiment of this application, an LED light strip marking device is disclosed, including a processing platform 1. A conveying mechanism 2 is installed on the upper surface of the processing platform 1, and the conveying mechanism 2 is a conveyor belt type conveyor. The upper surface of the processing platform 1 is fully welded with columns 3. A laser 4 is installed on the side surface of the columns 3 by bolts. A laser emitting lens 5 is connected to the side surface of the laser emitting lens 5. A protective cover 6 is installed between the laser emitting lens 5 and the processing platform 1. A flue pipe 7 is connected through the side surface of the protective cover 6. A purification box 8 is connected through the side surface of the flue pipe 7. A multi-layer composite purification filter 9 is installed inside the purification box 8. A negative pressure fan 10 is connected through the side surface of the purification box 8. A positive pressure fan 11 is connected to the outer side of the protective cover 6. The positive pressure fan 11 is connected to the air duct 12 through a pipe. First air nozzles 13 are arranged at equal intervals on the side surface of the air duct 12.

[0022] Processing platform 1, conveyor mechanism 2, column 3, laser 4, and ventilation system: Processing platform 1 serves as the load-bearing foundation of the entire equipment, welded from steel plates with a thickness of ≥10mm. Its upper surface is rigidly connected to the frame of the conveyor belt mechanism 2 via countersunk bolts. Column 3, made of square steel, is vertically fixed to the upper surface of processing platform 1 using a full welding process. A slotted hole is pre-drilled on its side surface. Laser 4 is connected to the slotted hole via bolts, allowing for fine-tuning within a ±50mm range. A protective cover 6 is installed between the laser emitting lens 5 and processing platform 1. Flue pipe 7 is sealed to a round hole via a flange (with a heat-resistant silicone sealing ring). The other end of flue pipe 7 connects to the purification chamber 8 (internal layered activated carbon + HEPA filters). The composite filter is connected by a flange. The air outlet of the purification box 8 is connected to the negative pressure fan 10 through a hose. The positive pressure fan 11 is fixed to the outside of the protective cover 6 by a bracket. Its air outlet is connected to the air duct 12. The air duct 12 is arranged horizontally along the inner side of the protective cover 6. Holes are opened at equal intervals at the bottom. The first nozzle 13 is fixed to the hole through a threaded connection. When the negative pressure fan 10 is started, a negative pressure environment is formed inside the protective cover 6. The smoke generated by marking is forced into the flue pipe 7 under the action of air pressure difference. After being filtered by the purification box 8, it meets the emission standards and prevents the smoke from spreading into the equipment. The positive pressure fan 11 simultaneously delivers clean air to the air duct 12. The airflow ejected by the first nozzle 13 forms a "horizontal air curtain" between the laser emitting lens 5 and the LED light strip. This air curtain works synergistically with the negative pressure of the protective cover 6: it not only blocks the smoke from spreading towards the lens, but also "pushes" the residual smoke towards the intake of the flue pipe 7, realizing the dual pollution control of "active smoke exhaust + passive isolation".

[0023] The side surface of the laser emitting lens 5 is connected to the air guide annular hollow tube 15 via a bracket, and the inner side of the air guide annular hollow tube 15 is connected to the second air nozzle 16 in an inclined direction. The side surface of the air guide annular hollow tube 15 is connected to the air duct 12 via a pipe.

[0024] The air-guiding annular hollow tube 15 and the second air nozzle 16: The air-guiding annular hollow tube 15 is made of bent aluminum alloy round tube and is fixed to the outer shell of the laser emitting lens 5 by a stainless steel bracket. The second air nozzle 16 is evenly distributed along the inner side of the annular tube, and each air nozzle is inclined inward with the axis of the annular tube (pointing to the lens surface). It is sealed to the annular tube by a hot-melt process. The annular tube is connected to the branch interface of the main air duct 12 through a pipe. After the clean airflow of the main air duct 12 flows into the annular tube, it is ejected at high speed through the second air nozzle 16, forming a 360° annular airflow field on the lens surface. This can quickly remove the heat generated by the absorption of laser energy by the lens and avoid the aging of the coating caused by the "hot spot effect".

[0025] A fixing sleeve 20 is fixed to the side surface of the processing platform 1 by bolts. A slidable frame 19 is connected to the surface of the fixing sleeve 20. A limit plate 21 is welded to the end of the slid frame 19. A damping spring 22 is sleeved on the surface of the slid frame 19. A tension roller 18 is connected to the inner side of the slid frame 19 through a sealed bearing seat.

[0026] Tensioning roller 18 and adjusting mechanism: Fixed sleeve 20 is horizontally fixed to the side surface of processing platform 1 by bolts. C-shaped frame 19 is made of steel plate bent and is clearance-fitted with fixed sleeve 20. Limiting plate 21 is welded to the end of C-shaped frame 19 to prevent it from coming out of the sleeve. Damping spring 22 is sleeved on the cross bar of C-shaped frame 19, with both ends in contact with the end face of fixed sleeve 20 and the vertical bar of C-shaped frame 19, respectively. Tensioning roller 18 is connected to the inner side of C-shaped frame 19 through sealed bearing seat to ensure that it can rotate flexibly around the axis. When the LED light strip passes between tensioning roller 18 and conveying mechanism 2, the preload of damping spring 22 makes tensioning roller 18 always fit the surface of light strip and can adaptively expand and contract with the thickness of light strip. If slack occurs during conveying, the spring rebounds and pushes tensioning roller 18 down to maintain stable light strip tension and improve the accuracy of marking position.

[0027] The outer surface of the observation window 14 is provided with a scratch-resistant layer, and the inner surface of the observation window 14 is provided with an anti-glare layer.

[0028] Observation window 14: The observation window 14 is located on the front of the protective cover 6 and is made of double-layer tempered glass. The outer surface is coated with a scratch-resistant layer by magnetron sputtering, and the inner surface is coated with an anti-glare layer by dip coating. The glass edge is embedded in the mounting groove of the protective cover 6 by silicone strips and is pressed and fixed with pressure strips. The scratch-resistant layer can resist daily wiping and slight impacts, ensuring clear observation for a long time. The anti-glare layer scatters laser light through microstructures, allowing operators to clearly identify the edge clarity of the marked characters and the integrity of the QR code, facilitating real-time adjustment of laser parameters.

[0029] The air inlet of the positive pressure fan 11 is equipped with a fine metal filter.

[0030] Fine metal filter: Installed at the air inlet of the positive pressure fan 11, it is connected to the fan housing by a clip; its function is to filter dust and fibers in the air, prevent pollutants from entering the air duct 12 with the airflow, and prevent secondary contamination of the lens surface.

[0031] An integrated controller 17 is bolted to the front of the processing platform 1.

[0032] Integrated controller 17: It adopts a touch screen PLC all-in-one machine, which is fixed to the front of the processing platform 1 by bolts. Its internal circuit is connected to the laser 4, the servo motor of the conveying mechanism 2, the negative pressure fan 10, and the positive pressure fan 11 through cables, which can realize parameter linkage control: such as setting the conveying speed, the system automatically matches the laser marking frequency, realizes intelligent operation of the equipment, and reduces manual intervention.

[0033] The operating principle of the LED strip marking device in this embodiment is as follows: The LED strip is introduced into the device by the conveyor belt type conveyor mechanism 2 and is conveyed forward through the gap between the tension roller 18 and the conveyor mechanism 2. Under the elastic action of the damping spring 22, the tension roller 18 always adheres to the surface of the LED strip with a preset pressure. Through "adaptive expansion and contraction", it compensates for the thickness fluctuation or conveying slack of the LED strip, ensuring that the LED strip maintains a straight tension state in the marking area and avoids marking misalignment caused by positional deviation. The integrated controller 17 sends a marking signal to the laser 4. The high-energy laser beam generated by the laser 4 is transmitted to the laser emitting lens 5 through the optical path. The lens focuses the laser beam into a high-energy spot, which acts on the surface of the LED strip. The high temperature of the laser spot causes the surface material of the LED strip to vaporize, oxidize or undergo a phase change reaction, forming a permanent mark. The fumes generated by marking are sealed in a local space by the protective cover 6. The negative pressure fan 10 forces the fumes into the purification box 8 through the negative pressure formed in the protective cover 6 by the flue pipe 7. After the flue gas is adsorbed by the activated carbon layer and the particulate matter is filtered by the HEPA filter, it is finally discharged from the equipment by the fan. The positive pressure fan 11 delivers clean air filtered by the fine metal filter to the air duct 12. The first air nozzle 13 forms a horizontal air curtain between the laser lens and the light strip to prevent the flue gas from spreading upward. The second air nozzle 16 of the air guide annular hollow tube 15 sprays out annular airflow, which flows along the tangential direction of the lens surface, blowing away the attached tiny pollutants and carrying away the heat generated by the laser absorption of the lens, thus delaying the aging of the lens coating.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An LED light strip marking device, comprising a processing platform (1), characterized in that: The upper surface of the processing platform (1) is equipped with a conveyor mechanism (2), and the conveyor mechanism (2) is a conveyor belt type conveyor. The upper surface of the processing platform (1) is fully welded with columns (3). A laser (4) is installed on the side surface of the column (3) by bolts. A laser emitting lens (5) is connected to the side surface of the laser (4). A protective cover (6) is installed between the laser emitting lens (5) and the processing platform (1). A flue pipe (7) is connected through the side surface of the protective cover (6). A purification box (8) is connected through the side surface of the flue pipe (7). A multi-layer composite purification filter (9) is installed inside the purification box (8). A negative pressure fan (10) is connected through the side surface of the purification box (8). A positive pressure fan (11) is connected to the outer side of the protective cover (6). The positive pressure fan (11) is connected to the air duct (12) through a pipe. First air nozzles (13) are set at equal intervals on the side surface of the air duct (12).

2. The LED strip marking equipment according to claim 1, characterized in that: The side surface of the laser emitting lens (5) is connected to a hollow annular tube (15) for air delivery via a bracket, and a second air nozzle (16) is connected to the inner side of the hollow annular tube (15) in an inclined direction. The side surface of the hollow annular tube (15) is connected to the air duct (12) via a pipe.

3. The LED strip marking equipment according to claim 2, characterized in that: The side surface of the processing platform (1) is fixed with a fixing sleeve (20) by bolts. The surface of the fixing sleeve (20) is slidably connected with a C-shaped frame (19), and the end of the C-shaped frame (19) is welded with a limit plate (21). The surface of the C-shaped frame (19) is fitted with a damping spring (22), and the inner side of the C-shaped frame (19) is connected with a tension roller (18) through a sealed bearing seat.

4. The LED strip marking equipment according to claim 1, characterized in that: The protective cover (6) has an observation window (14) on its front side. The outer side of the observation window (14) is provided with a scratch-resistant layer, and the inner side of the observation window (14) is provided with an anti-glare layer.

5. The LED strip marking equipment according to claim 4, characterized in that: The positive pressure fan (11) is equipped with a fine metal filter screen at its air inlet.

6. The LED strip marking equipment according to claim 5, characterized in that: An integrated controller (17) is bolted to the front of the processing platform (1).

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