Metal print laser engraving equipment

Abstract

The invention relates to the technical field of metal processing, in particular to metal print laser engraving equipment which comprises a main body unit, a rack, a moving module arranged on the rack, a processing unit, a cleaning unit and a cleaning mechanism arranged on the processing unit and used for cleaning processing dust. By constructing a dynamic adaptation mechanism of the carving depth and the scrap removing system, precise scrap removing of different-depth machining is achieved, air is effectively isolated, high-temperature oxidation of metal is avoided, the consistency of texture color and luster and the surface cleanliness of the metal print are guaranteed, the problems that dust is not thoroughly removed and residues are adhered in different-depth carving scenes can be solved, and the working efficiency is improved. Through cooperative protection of the conical protective cover and the cleaning mechanism, the problems of lens ablation, scratching and light path deviation are avoided, the service life of the laser head is prolonged, the equipment maintenance cost is reduced, and the stability and safety of equipment operation are improved.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and specifically to a laser engraving device for metal prints. Background Technology

[0002] Metal printmaking, as a traditional art form that combines artistic and collectible value, is characterized by its delicate texture, long-lasting preservation, and unique visual texture. With the development of laser processing technology, laser engraving has gradually become the mainstream technology for metal printmaking due to its advantages such as non-contact processing, high positioning accuracy, fast engraving speed, and strong pattern plasticity. Through the thermal effect of the laser beam, the surface of the metal plate can be precisely ablated and melted, enabling diversified processing from shallow texture outlining to deep groove engraving. However, during laser engraving, the metal sheet is subjected to high temperatures, which generates a large amount of metal dust and debris. These dust particles are small and easily suspended. Some debris is also hot. If they are not cleaned in time, they will directly adhere to the focusing lens and reflecting lens of the laser head. This will not only scatter the laser energy and cause the focus to shift, resulting in blurred engraving texture and uneven depth, but may also cause the lens to be burned and scratched due to the dust absorbing the laser heat, which will greatly shorten the life of the lens and increase the equipment maintenance cost. In view of this, we propose a laser engraving device for metal prints. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides a metal engraving laser engraving device that effectively solves the problems of metal dust and debris generated during engraving easily adhering to the laser head lens, leading to focus shift, blurred texture, uneven depth, and lens wear, thus increasing maintenance costs.

[0004] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a laser engraving device for metal prints, comprising a main unit, a frame, and a movable module mounted on the frame, including... The processing unit includes a processing mechanism mounted on a mobile module, and a protective mechanism mounted on the processing mechanism to shield the processing mechanism from processing dust. The cleaning unit includes a cleaning mechanism mounted on the processing mechanism for cleaning processing dust, an air supply mechanism mounted on the moving module, and a control mechanism mounted on the processing mechanism. The control mechanism is used to adjust the cleaning intensity and mode of the cleaning mechanism according to the engraving depth of the processing mechanism.

[0005] Furthermore, the processing mechanism includes a fixed base mounted on the movable module, an electric telescopic rod fixedly connected to the top of the fixed base, a sliding base fixedly connected to the output end of the electric telescopic rod, the surface of the sliding base being slidably connected to the inner wall of the fixed base, and a laser head for engraving processing fixedly connected to the inner wall of the sliding base.

[0006] Furthermore, the protective mechanism includes multiple sets of support rods fixedly connected to the surface of the laser head, with a conical protective cover fixedly connected to the end of the support rod away from the laser head.

[0007] Furthermore, the gas supply mechanism includes two sets of gas storage tanks mounted on the mobile module, which are used to store inert gas and conventional dry compressed air, respectively.

[0008] Furthermore, the output ends of the two sets of gas storage tanks are fixedly connected to three-way solenoid valves, and the output ends of the three-way solenoid valves are fixedly connected to electric nozzles via hoses.

[0009] Furthermore, the cleaning mechanism includes a side block fixedly connected to the surface of the laser head, a fixing rod rotatably connected to the inner wall of the side block, and the end of the fixing rod away from the side block fixedly connected to the surface of the electric nozzle.

[0010] Furthermore, a gear is fixedly connected to the side of the fixing rod away from the side block, a rack is meshed with the radial side of the gear, and the rack is fixedly connected to the bottom of the fixing base by a tripod on the side away from the gear.

[0011] Furthermore, the control mechanism includes a photoelectric sensor fixedly connected to one side of the fixed base, with the detection end of the photoelectric sensor facing the sliding base, for real-time detection of the vertical descent position of the sliding base; The photoelectric sensor is electrically connected to the main controller of the equipment via a wire. The main controller is then electrically connected to the three-way solenoid valve to control the three-way solenoid valve to switch the gas storage tank passage.

[0012] Furthermore, the control mechanism also includes a sliding rheostat fixedly connected to one side of the fixed base. The sliding rheostat is fixedly connected to a fixed shaft via a sliding contact. The end of the fixed shaft away from the sliding rheostat is fixedly connected to one side of the sliding base.

[0013] Furthermore, the sliding rheostat is electrically connected to the main controller of the equipment and the electric nozzle in sequence through wires to form a power regulation circuit, which is used to adjust the output power of the electric nozzle.

[0014] The technical solution provided by this invention has the following advantages compared with known public technologies: This invention constructs a dynamic adaptation mechanism between engraving depth and the chip removal system. Combining depth detection by photoelectric sensors and gas switching control by a three-way solenoid valve, conventional dry compressed air is supplied to meet basic chip removal needs during shallow engraving, while inert gas is automatically switched during deep groove engraving. This achieves precise chip removal for different depths of processing and effectively isolates the metal from high-temperature oxidation, ensuring the consistency of texture and color and surface cleanliness of the metal print. Furthermore, by using a power linkage design between a sliding rheostat and an electric nozzle, the jet power is linearly adjusted according to the engraving depth. Combined with the adaptive adjustment of the nozzle angle achieved by the gear and rack transmission, high-power, wide-angle airflow is used to precisely impact the dust accumulated in the groove during deep groove processing, while low-power, narrow-angle airflow is used to precisely clean the surface dust during shallow processing. This reduces the problems of incomplete dust removal and residual adhesion in different engraving scenarios, and further improves the flatness and precision of the print engraving. Through the coordinated protection of the conical protective cover and the cleaning mechanism, dust and debris are effectively prevented from splashing onto the laser head lens without obstructing the laser beam path or affecting the heat dissipation of the core components. This avoids lens ablation, scratches, and beam path misalignment, extends the lifespan of the laser head, reduces equipment maintenance costs, and improves the stability and safety of equipment operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cleaning unit and processing unit of the present invention; Figure 3 This is a schematic diagram of the gas supply mechanism and processing mechanism of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 This is a schematic diagram of the cleaning mechanism and the gas supply mechanism of the present invention; Figure 6 This is a schematic diagram of the control mechanism and processing mechanism of the present invention.

[0017] The labels in the diagram represent: 100, main unit; 101, frame; 102, mobile module; 200. Cleaning unit; 201. Air supply mechanism; 2011. Air tank; 2012. Three-way solenoid valve; 2013. Hoses; 2014. Electric nozzles; 202. Cleaning mechanism; 2021. Fixing rod; 2022. Side block; 2023. Gear; 2024. Rack; 2025. Tripod; 203. Control mechanism; 2031. Photoelectric sensor; 2032. Fixed shaft; 2033. Sliding rheostat; 300. Processing unit; 301. Processing mechanism; 3011. Fixed base; 3012. Electric telescopic rod; 3013. Sliding base; 3014. Laser head; 302. Protective mechanism; 3021. Conical protective cover; 3022. Support rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] like Figures 1 to 6 As shown, a metal engraving laser engraving device includes a main unit 100, a frame 101, and a movable module 102 mounted on the frame 101. The device includes a processing unit 300, comprising a processing mechanism 301 mounted on the movable module 102, and a protective mechanism 302 mounted on the processing mechanism 301 to shield the processing mechanism 301 from processing dust. A cleaning unit 200 includes a cleaning mechanism 202 mounted on the processing mechanism 301 for cleaning processing dust, and an air supply mechanism 200 mounted on the movable module 102. 01, and a control mechanism 203 set on the processing mechanism 301, the control mechanism 203 is used to adjust the cleaning intensity and mode of the cleaning mechanism 202 according to the engraving depth of the processing mechanism 301; the frame 101 is made of steel plate welded to ensure the structural stability of the equipment during operation, the moving module 102 is fixedly installed on the top of the frame 101 by bolts, and adopts XY axis linear module to provide power and guidance for the movement of the processing unit 300. The processing unit 300 is assembled on the moving module 102 and is detachably fixed by high-strength bolts; Specifically, refer to Figures 2 to 4The processing mechanism 301 includes a fixed base 3011 mounted on the movable module 102. An electric telescopic rod 3012 is fixedly connected to the top of the fixed base 3011. A sliding base 3013 is fixedly connected to the output end of the electric telescopic rod 3012. The surface of the sliding base 3013 is slidably connected to the inner wall of the fixed base 3011. A laser head 3014 for engraving is fixedly connected to the inner wall of the sliding base 3013. The protective mechanism 302 includes multiple sets of support rods 3022 fixedly connected to the surface of the laser head 3014. A conical protective cover 3021 is fixedly connected to the end of each support rod 3022 away from the laser head 3014. The fixed base 3011 is integrally formed from aluminum alloy and is secured to the slide of the movable module 102 by T-bolts. The inner wall of the fixed seat 3011 is equipped with a high-precision guide rail groove. The electric telescopic rod 3012 is a DC electric push rod of model DTZ300. The output shaft end is rigidly connected to the sliding seat 3013 through a coupling. The two side bosses of the sliding seat 3013 are in clearance fit with the guide rail groove of the fixed seat 3011 to ensure that the sliding seat 3013 slides vertically and smoothly along the inner wall of the fixed seat 3011. The laser head 3014 is a fiber laser head 3014, which is fixed in the mounting hole on the inner wall of the sliding seat 3013. The laser output direction of the laser head 3014 is vertically downward and perpendicular to the worktable surface. When the electric telescopic rod 3012 extends and retracts, it drives the sliding seat 3013 to move synchronously, thereby realizing the lifting and lowering adjustment of the laser head 3014 to meet the engraving needs of different depths. It should be noted that the protective mechanism 302 is assembled around the laser head 3014. Multiple sets of support rods 3022 are evenly distributed on the side wall of the laser head 3014. One end of the support rod 3022 is fixedly connected to the outer shell of the laser head 3014 by argon arc welding, and the other end is fixed to the upper end face of the conical protective cover 3021. The conical protective cover 3021 is made of polytetrafluoroethylene injection molding material, with a conical lower end, a small opening facing downwards, a smooth inner wall and anti-static treatment. After installation, it maintains a corresponding distance from the laser output end of the laser head 3014, which neither obstructs the laser beam path nor hinders the dust and metal debris splashed during the engraving process, thus preventing dust and debris from adhering to the lens surface of the laser head 3014 and playing a protective role. Specifically, refer to Figure 2 , Figure 3 , Figure 5The gas supply mechanism 201 includes two sets of gas storage tanks 2011 mounted on the mobile module 102. The two sets of gas storage tanks 2011 are used to store inert gas and conventional dry compressed air, respectively. A three-way solenoid valve 2012 is fixedly connected to the output end of each set of gas storage tanks 2011. An electric nozzle 2014 is fixedly connected to the output end of the three-way solenoid valve 2012 via a hose 2013. The cleaning mechanism 202 includes a side block 2022 fixedly connected to the surface of the laser head 3014. A fixing rod 2021 is rotatably connected to the inner wall of the side block 2022. One end of the fixing rod 2021 away from the side block 2022 is fixedly connected to the surface of the electric nozzle 2014. A gear 2023 is fixedly connected to the side of the fixing rod 2021 away from the side block 2022. A rack 2024 is meshed with the radial side of the gear 2023. The rack 2024 is located away from the gear... One side of wheel 2023 is fixedly connected to the bottom of fixed base 3011 via tripod 2025; the two sets of air storage tanks 2011 of the air supply mechanism 201 are both high-pressure air storage tanks 2011, which are symmetrically fixed above the mobile module 102 by brackets. One set is used to store high-purity nitrogen, and the other set is used to store compressed air that has been dried and filtered. The output ports of both sets of air storage tanks 2011 are equipped with pressure reducing valves, which are connected to the input end of three-way solenoid valve 2012 through seamless steel pipe. The three-way solenoid valve 2012 is a two-position three-way solenoid directional valve with model VQZ3120-5L1-C6. The output end is connected to hose 2013 through quick connector. The hose 2013 is a high-pressure hose made of PU material. The other end is fixed to the air inlet of electric nozzle 2014 through quick connector to achieve stable gas delivery. It should be noted that the side block 2022 is fixed to the side wall of the laser head 3014 by bolts. One end of the fixing rod 2021 is connected to the inner ring of the bearing inside the side block 2022 by interference fit, and the other end is fixed to the outer shell of the electric nozzle 2014 by welding, allowing the electric nozzle 2014 to rotate flexibly. The electric nozzle 2014 is a fan-shaped high-pressure nozzle with an initial spray angle of 30°. The spray direction is aligned with the engraving work point of the laser head 3014. The side of the fixing rod 2021 away from the side block 2022 is connected to the gear 20 by a flat key. 23 Fixed connection, gear 2023 meshes with rack 2024 on one radial side for transmission, rack 2024 is fixed to the bottom of fixed base 3011 by tripod 2025. When sliding base 3013 drives laser head 3014 to rise and fall, side block 2022 moves synchronously with laser head 3014, thereby driving fixed rod 2021 and gear 2023 to move. Gear 2023 meshes with fixed rack 2024 to generate rotation, thereby driving electric nozzle 2014 to adjust spray angle and always maintain precise air blowing to the engraving work point; Specifically, refer to Figure 6The control mechanism 203 includes a photoelectric sensor 2031 fixedly connected to one side of the fixed base 3011. The detection end of the photoelectric sensor 2031 is set facing the sliding base 3013 for real-time detection of the vertical descent position of the sliding base 3013. The photoelectric sensor 2031 is electrically connected to the main controller of the equipment via a wire. The main controller is then electrically connected to the three-way solenoid valve 2012 for controlling the three-way solenoid valve 2012 to switch the passage of the gas storage tank 2011. The control mechanism 203 also includes a sliding rheostat 203 fixedly connected to one side of the fixed base 3011. 3. A fixed shaft 2032 is fixedly connected to the sliding rheostat 2033 via a sliding contact. The end of the fixed shaft 2032 away from the sliding rheostat 2033 is fixedly connected to the side of the sliding base 3013. The sliding rheostat 2033 is electrically connected to the main controller of the equipment and the electric nozzle 2014 in sequence via wires, forming a power regulation circuit used to adjust the output power of the electric nozzle 2014. The photoelectric sensor 2031 is a diffuse reflection laser displacement sensor of model E3Z-LS63, which is fixed to the fixed base 3013 via a sensor bracket. On one side of 1, the detection end faces the end face of the sliding seat 3013 vertically. The sensor and the sliding seat 3013 maintain a horizontal distance to ensure that the detection signal is not interfered with. The power supply pin of the photoelectric sensor 2031 is connected to the DC power supply of the equipment through a wire, and the signal output pin is connected to the digital input port of the main controller of the equipment model PLCS7-200SMARTSR60 through a wire. The digital output port of the main controller is connected to the coil pin of the three-way solenoid valve 2012 through a wire to form a complete electrical control circuit. The photoelectric sensor 2031 detects the vertical position of the sliding seat 3013 in real time, converts the position signal into an electrical signal and transmits it to the main controller. The main controller determines the engraving depth according to the preset height threshold. When the sliding seat 3013 descends to the preset threshold, the main controller outputs a control signal to switch the three-way solenoid valve 2012 to the inert gas storage tank 2011 passage to provide inert gas for deep groove engraving. When the sliding seat 3013 rises above the threshold, the main controller controls the three-way solenoid valve 2012 to switch back to the compressed air passage to meet the chip removal requirements of shallow engraving. It should be noted that the sliding rheostat 2033 is a WX112-10 linear adjustable resistor, which is fixed to one side of the mounting base 3011 with screws, arranged on the same side as the photoelectric sensor 2031. The two fixed pins of the sliding rheostat 2033 are connected to the analog output port of the main controller and the negative power supply terminal of the device via wires, respectively. The sliding contact is fixedly connected to the fixed shaft 2032 via a conductive connecting rod. One end of the fixed shaft 2032 is fixed to one side of the sliding base 3013 via a threaded connection, and the other end is rigidly connected to the sliding contact, ensuring that when the sliding base 3013 moves, it drives the sliding contact to slide synchronously along the resistance track of the sliding rheostat 2033. The control terminal of the electric nozzle 2014 is connected to the power drive module of the main controller via wires. The sliding end of the sliding rheostat 2033 is connected to the signal input terminal of the power drive module, forming a power regulation loop. As the sliding seat 3013 descends deeper, the amount of dust and debris generated during engraving increases. At this point, the sliding seat 3013 moves the sliding contact via the fixed shaft 2032, reducing the resistance of the sliding rheostat 2033 connected to the circuit. The main controller detects the resistance change signal and controls the power drive module to increase the power supply current of the electric nozzle 2014, thereby increasing the jet power of the electric nozzle 2014 and enhancing the dust removal effect. Conversely, when the sliding seat 3013 rises, the engraving depth becomes shallower, the resistance of the sliding rheostat 2033 increases, and the jet power of the electric nozzle 2014 decreases accordingly, thus achieving dynamic matching between jet power and dust generation.

[0021] The working principle of the present invention is as follows: After the equipment is started, the main unit 100's moving module 102 first drives the processing unit 300 to move to the preset engraving starting position. At the same time, the electric telescopic rod 3012 is in the initial retracted state, the sliding seat 3013 is located in the upper area of ​​the fixed seat 3011, and the laser head 3014 maintains a large distance from the worktable. At this time, the equipment enters the shallow engraving preparation state. The photoelectric sensor 2031 in the control mechanism 203 detects the initial position of the sliding seat 3013 in real time and transmits the high-level signal to the main controller of the equipment. The main controller controls the three-way solenoid valve 2012 to switch to the air tank 2011 passage that stores conventional dry compressed air. At the same time, because the sliding seat 3013 is in a high position, the sliding contact of the sliding rheostat 2033 is located at the high resistance end of the resistance rail. The current connected to the circuit of the electric nozzle 2014 is small, and the jet power is at a low level, which meets the basic chip removal requirements of shallow carving. When the engraving operation begins, the laser head 3014 emits a laser, and the moving module 102 drives the processing unit 300 to move along the XY axis according to the preset pattern trajectory. At the same time, the electric telescopic rod 3012 extends gradually according to the engraving program, pushing the sliding seat 3013 to slide vertically downward along the guide groove on the inner wall of the fixed seat 3011. The laser head 3014 descends synchronously with the sliding seat 3013, and the engraving depth gradually increases. The photoelectric sensor 2031 continuously detects the descending position of the sliding seat 3013, and accurately calculates the current engraving depth of the laser head 3014 through the fixed connection between the sliding seat 3013 and the laser head 3014. When the sliding seat 3013 is detected to have descended to a preset height threshold, the photoelectric sensor 2031 sends a trigger signal to the main controller. Upon receiving the signal, the main controller immediately controls the three-way solenoid valve 2012 to switch, cutting off the supply path of conventional dry compressed air and switching to the path of the gas storage tank 2011 storing inert gas. The inert gas can not only efficiently blow away dust, but also isolate air, preventing the metal from discoloring due to high-temperature oxidation during deep groove carving, and ensuring the color consistency of the groove and surrounding area. Conversely, when the deep groove carving of a certain area is completed, the electric telescopic rod 3012 retracts, causing the sliding seat 3013 to rise. When the photoelectric sensor 2031 detects that the position is higher than the threshold, it sends a reset signal to the main controller. The main controller controls the three-way solenoid valve 2012 to switch back to the conventional dry compressed air path, restoring the gas supply mode for shallow carving. Meanwhile, the sliding rheostat 2033 is rigidly connected to the sliding seat 3013 through the fixed shaft 2032. When the sliding seat 3013 descends as the engraving depth increases, it will drive the fixed shaft 2032 to move downward synchronously, thereby driving the sliding contact of the sliding rheostat 2033 to slide along the resistance track to the low resistance end. Since the sliding rheostat 2033, the main controller, and the electric nozzle 2014 form a closed power regulation circuit, the decrease in resistance will cause the current through the electric nozzle 2014 in the circuit to increase linearly, and the jet power will increase accordingly. Because the deeper the engraving depth, the greater the amount of dust and metal debris generated by laser ablation of metal, and the more difficult it is to remove dust from the deep groove, by increasing the jet power of the electric nozzle 2014, a stronger airflow impact force can be formed to quickly blow the dust and debris accumulated in the deep groove away from the processing area, preventing dust from sticking to the groove wall or flowing back to the laser head 3014 lens. Conversely, when the sliding seat 3013 rises and the engraving depth becomes shallower, the sliding contact moves in the opposite direction to the high resistance end, and the jet power of the electric nozzle 2014 decreases linearly, which ensures the chip removal effect and avoids energy waste. The cleaning mechanism 202 achieves precise matching between the spray angle and the carving depth through the meshing transmission of the gear 2023 and the rack 2024. The rack 2024 is fixed to the bottom of the fixed base 3011 by the tripod 2025 and its position remains fixed. The gear 2023 is fixed on the fixed rod 2021 of the cleaning mechanism 202 and cooperates with the bearing on the inner wall of the side block 2022, so that the fixed rod 2021 can rotate flexibly. When the sliding seat 3013 descends, the laser head 3014 descends synchronously, causing the side block 2022, the fixing rod 2021, and the electric nozzle 2014 fixed on the side wall of the laser head 3014 to move downward as a whole. At this time, the gear 2023 moves downward with the fixing rod 2021 and meshes with the fixed rack 2024. The gear 2023 rotates and drives the fixing rod 2021 and the electric nozzle 2014 to rotate around the bearing of the side block 2022, and the spray angle gradually increases. When the engraving depth reaches its maximum, the sliding seat 3013 descends to the lowest limit of the fixed seat 3011, the gear 2023 moves to the end of the rack 2024, and the spray angle of the electric nozzle 2014 is adjusted to its maximum. At this time, the airflow can cover the deep groove processing area from a wider angle, directly impacting the dust at the bottom and side walls of the groove, forming a directional strong airflow channel to efficiently blow away a large amount of accumulated dust, preventing dust from remaining in the deep groove or rebounding to the laser head 3014. When the sliding seat 3013 rises, the gear 2023 moves upward with the fixed rod 2021 and meshes with the rack 2024 in the opposite direction. The spray angle of the electric nozzle 2014 decreases synchronously, returning to the narrow angle spray state suitable for shallow engraving, ensuring that the airflow accurately acts on the surface dust without interfering with the surrounding engraved texture. Meanwhile, the conical protective cover 3021 is fixed to the outside of the laser head 3014 by multiple sets of support rods 3022, and rises and falls synchronously with the laser head 3014. The conical structure does not block the laser beam path, and can form a ring-shaped protective barrier to block the dust and debris splashed during the engraving process in the area below the lens of the laser head 3014. With the directional airflow of the electric nozzle 2014, the dust is quickly removed from the processing area, avoiding dust from adhering to the surface of the lens of the laser head 3014 and causing ablation or optical path interference. Moreover, the conical protective cover 3021 is fixed to the laser head 3014 by the support rods 3022. The conical protective cover 3021 is a hollow structure, which does not affect the normal heat dissipation of the core components such as the laser head 3014.

[0022] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser engraving device for metal prints, comprising a main unit (100), a frame (101), and a movable module (102) disposed on the frame (101), characterized in that, include, The processing unit (300) includes a processing mechanism (301) disposed on the mobile module (102) and a protective mechanism (302) disposed on the processing mechanism (301) for blocking processing dust from the processing mechanism (301). The cleaning unit (200) includes a cleaning mechanism (202) disposed on the processing mechanism (301) for cleaning processing dust, an air supply mechanism (201) disposed on the moving module (102), and a control mechanism (203) disposed on the processing mechanism (301). The control mechanism (203) is used to adjust the cleaning intensity and mode of the cleaning mechanism (202) according to the engraving depth of the processing mechanism (301).

2. The metal engraving laser engraving equipment according to claim 1, characterized in that, The processing mechanism (301) includes a fixed seat (3011) disposed on the movable module (102), an electric telescopic rod (3012) fixedly connected to the top of the fixed seat (3011), a sliding seat (3013) fixedly connected to the output end of the electric telescopic rod (3012), the surface of the sliding seat (3013) being slidably connected to the inner wall of the fixed seat (3011), and a laser head (3014) for engraving processing fixedly connected to the inner wall of the sliding seat (3013).

3. The laser engraving equipment for metal prints according to claim 1, characterized in that, The protective mechanism (302) includes multiple sets of support rods (3022) fixedly connected to the surface of the laser head (3014), and a conical protective cover (3021) is fixedly connected to the end of the support rod (3022) away from the laser head (3014).

4. The metal print laser engraving equipment according to claim 1, characterized in that, The gas supply mechanism (201) includes two sets of gas storage tanks (2011) mounted on the mobile module (102), which are used to store inert gas and conventional dry compressed air, respectively.

5. A laser engraving device for metal prints according to claim 4, characterized in that, The output ends of the two sets of gas storage tanks (2011) are fixedly connected to a three-way solenoid valve (2012), and the output end of the three-way solenoid valve (2012) is fixedly connected to an electric nozzle (2014) through a hose (2013).

6. The laser engraving equipment for metal prints according to claim 1, characterized in that, The cleaning mechanism (202) includes a side block (2022) fixedly connected to the surface of the laser head (3014), and a fixing rod (2021) rotatably connected to the inner wall of the side block (2022). The end of the fixing rod (2021) away from the side block (2022) is fixedly connected to the surface of the electric nozzle (2014).

7. A laser engraving device for metal prints according to claim 6, characterized in that, A gear (2023) is fixedly connected to the side of the fixed rod (2021) away from the side block (2022). A rack (2024) is meshed with the radial side of the gear (2023). The rack (2024) is fixedly connected to the bottom of the fixed base (3011) by a tripod (2025) on the side away from the gear (2023).

8. The laser engraving equipment for metal prints according to claim 1, characterized in that, The control mechanism (203) includes a photoelectric sensor (2031) fixedly connected to one side of the fixed base (3011). The detection end of the photoelectric sensor (2031) is set facing the sliding base (3013) and is used to detect the vertical descent position of the sliding base (3013) in real time. The photoelectric sensor (2031) is electrically connected to the main controller of the equipment via a wire. The main controller is then electrically connected to the three-way solenoid valve (2012) to control the three-way solenoid valve (2012) to switch the passage of the gas storage tank (2011).

9. A laser engraving device for metal prints according to claim 1, characterized in that, The control mechanism (203) also includes a sliding rheostat (2033) fixedly connected to one side of the fixed base (3011). The sliding rheostat (2033) is fixedly connected to a fixed shaft (2032) via a sliding contact. The end of the fixed shaft (2032) away from the sliding rheostat (2033) is fixedly connected to one side of the sliding base (3013).

10. A laser engraving device for metal prints according to claim 9, characterized in that, The sliding rheostat (2033) is electrically connected to the main controller of the equipment and the electric nozzle (2014) in sequence through wires to form a power regulation circuit, which is used to adjust the output power of the electric nozzle (2014).

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