Laser engraving machine

Abstract

The utility model discloses a laser engraving machine and relates to the technical field of laser engraving, the laser engraving machine comprises a shell, an engraving machine body, an operating handle and a lens increasing module, a cavity is formed in the shell, and the shell is provided with a light outlet communicated with the cavity; the carving machine body is arranged in the cavity and comprises a laser module; the operating handle is fixedly arranged on one side of the shell; and the lens increasing module is arranged at the light outlet, and the mirror surface central axis of the lens increasing module is collinear with the light path output axis of the laser module. According to the technical scheme, the problem that an existing laser engraving machine is poor in focusing effect is solved.

Description

Technical Field

[0001] This utility model relates to the field of laser engraving technology, and in particular to a laser engraving machine. Background Technology

[0002] Laser engraving technology originated in the mid-20th century, gradually moving from initial laboratory research to widespread industrial applications. During this development, the use of laser engraving machines became increasingly common. To meet consumer demand for small, portable laser engraving machines, hammer-handle laser engraving machines were developed.

[0003] However, a key issue with this type of hammer-handle laser engraving machine is the focusing of the laser beam. Existing hammer-handle laser engraving machines typically exhibit poor laser beam focusing during operation. Since the degree of laser beam focusing directly affects the precision and quality of the engraving, poor focusing leads to unsatisfactory engraving results, such as unclear lines and insufficiently sharp edges, thus affecting the final engraving quality of the product and failing to fully meet users' demands for high-quality engraving. Utility Model Content

[0004] The main purpose of this invention is to propose a laser engraving machine that aims to solve the problem of poor focusing effect in existing laser engraving machines.

[0005] To achieve the above objectives, the present invention proposes a laser engraving machine, which includes:

[0006] The outer shell has an internal cavity, and the outer shell is provided with a light outlet communicating with the cavity;

[0007] The engraving machine body is disposed within the cavity, and the engraving machine body includes a laser module;

[0008] An operating handle is fixedly disposed on one side of the housing; and

[0009] An intensifying lens module is disposed at the light output port, and the central axis of the mirror surface of the intensifying lens module is collinear with the optical path output axis of the laser module.

[0010] In one embodiment, the lens enhancement module includes a lens assembly and a lens bracket. The lens bracket is fixedly disposed at the edge of the light output port, and the lens assembly is mounted on the lens bracket. The central axis of the mirror surface of the lens assembly is collinear with the optical path output axis of the laser module.

[0011] In one embodiment, the lens assembly includes a first lens and a second lens coaxially arranged, the first lens being disposed near the laser module and the second lens being disposed near the light outlet, wherein the first lens is a plano-concave lens and the second lens is a plano-convex lens.

[0012] In one embodiment, both surfaces of the first lens and both surfaces of the second lens are coated with an anti-reflective coating.

[0013] In one embodiment, the operating handle is positioned perpendicular to the housing.

[0014] In one embodiment, the outer casing is further provided with heat dissipation holes arranged in an array, the heat dissipation holes being honeycomb holes or waist-shaped holes.

[0015] In one embodiment, the housing includes a bottom plate and a side plate connected together, the bottom plate and the side plate together forming the cavity, and the bottom plate is provided with the light outlet; the laser engraving machine also includes a protective cover, which is detachably mounted on the bottom plate.

[0016] In one embodiment, a magnet is also provided on the base plate, and the protective cover is magnetically connected to the base plate through the magnet.

[0017] In one embodiment, the base plate is further provided with an air outlet, and the laser engraving machine further includes a filter plate, which is embedded in the air outlet and has ventilation holes communicating with the cavity.

[0018] In one embodiment, the laser engraving machine further includes:

[0019] Base;

[0020] The column structure is fixedly mounted on the base; and

[0021] The mounting box is slidably disposed along the axial direction of the column structure, and the mounting box is provided with a clamping cavity and a mounting port communicating with the clamping cavity. The mounting handle of the engraving machine body is detachably inserted into the clamping cavity through the mounting port.

[0022] In one embodiment, the column structure includes:

[0023] The column housing is fixedly mounted on the base; and

[0024] A lifting assembly is located inside the column housing. The lifting assembly is driven to the mounting box to drive the mounting box to slide along the axial direction of the column housing.

[0025] In one embodiment, the column housing is provided with scale lines, and the scale lines are located on the side of the column housing facing the engraving machine body.

[0026] This invention provides a light-emitting port on the outer casing to facilitate the emission of the laser beam emitted by the laser module. An intensifying lens module is placed at the light-emitting port. When the laser beam emitted by the laser module reaches the intensifying lens module along the optical path output axis, the intensifying lens module focuses and enhances the laser beam. For example, when engraving thicker or harder materials, the intensifying lens module can concentrate the laser energy, improving engraving efficiency and quality. Because the central axis of its mirror is collinear with the optical path output axis of the laser module, the laser beam can accurately pass through the intensifying lens module and exit from the light-emitting port according to a predetermined optical path, forming a suitable light spot on the target object for precise engraving. An operating handle is provided on one side of the outer casing, allowing the user to easily and simply perform the engraving operation after setting the engraving parameters. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a laser engraving machine according to an embodiment of the present invention;

[0029] Figure 2 This is a structural schematic diagram of another embodiment of the laser engraving machine provided by this utility model;

[0030] Figure 3 A schematic diagram of the internal structure of the laser engraving machine body in another embodiment of the present invention;

[0031] Figure 4 A side view of the structure of another embodiment of the laser engraving machine provided by this utility model;

[0032] Figure 5 A schematic diagram of the lens module in another embodiment of the laser engraving machine provided by this utility model;

[0033] Figure 6 A schematic diagram of another embodiment of the laser engraving machine provided by this utility model;

[0034] Figure 7 A schematic diagram of the structure of the protective cover and the base plate in another embodiment of the laser engraving machine provided by this utility model;

[0035] Figure 8A schematic diagram of the base plate in another embodiment of the laser engraving machine provided by this utility model.

[0036] Explanation of icon numbers:

[0037] 100. Laser engraving machine; 1. Outer shell; 11. Side plate; 111. Heat dissipation hole; 12. Base plate; 121. Magnet; 122. Light outlet; 13. Display screen; 2. Engraving machine body; 20. Power control board; 21. Laser module; 211. Pump source; 212. Heat dissipation structure; 22. Scanning galvanometer module; 3. Operating handle; 4. Intensifier lens module; 41. Lens assembly; 411. First lens; 412. Second lens; 42. Lens bracket; 5. Protective cover; 51. Pipe interface; 6. Filter plate; 61. Vent hole; 7. Base; 8. Column shell; 81. Scale line; 9. Mounting box.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0040] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] Existing hammer-handle laser engraving machines typically exhibit poor laser beam focusing during operation. Since the degree of laser beam focusing directly affects the precision and quality of engraving, poor focusing leads to unsatisfactory engraving results, such as unclear lines and insufficiently sharp edges, thus impacting the final engraving quality and failing to fully meet users' demands for high-quality engraving.

[0043] This utility model proposes a laser engraving machine.

[0044] Please see Figures 1 to 3 In one embodiment of this utility model, the laser engraving machine 100 includes:

[0045] The outer shell 1 has an internal cavity, and the outer shell 1 is provided with a light outlet 122 that communicates with the cavity;

[0046] The engraving machine body 2 is disposed in the cavity, and the engraving machine body 2 includes a laser module 21;

[0047] Operating handle 3 is fixedly disposed on one side of the outer casing 1; and

[0048] The lens enhancement module 4 is located at the light output port 122, and the central axis of the mirror of the lens enhancement module 4 is collinear with the optical path output axis of the laser module 21.

[0049] The technical solution of this utility model provides a channel for the laser beam emitted by the laser module 21 to exit through a light outlet 122 on the outer shell 1, and an intensifying lens module 4 is set at the light outlet 122. When the laser emitted by the laser module 21 reaches the intensifying lens module 4 along the optical path output axis, the intensifying lens module 4 focuses and enhances the laser. For example, when engraving thicker or harder materials, the intensifying lens module 4 can concentrate the laser energy, improving the efficiency and quality of engraving. Since the central axis of its mirror is collinear with the optical path output axis of the laser module 21, the laser can accurately pass through the intensifying lens module 4 and exit from the light outlet 122 according to the predetermined optical path, so that the laser forms a suitable spot on the target object to achieve a precise engraving effect. In addition, by setting an operating handle 3 on one side of the outer shell 1, the user can hold the operating handle 3 and perform the engraving action after setting the engraving parameters, making the operation convenient and simple.

[0050] Specifically, the outer casing 1 can be made of aluminum alloy or other metals, and its shape can be a cuboid or prism. A light outlet 122 is provided on one side of the outer casing 1; the light outlet 122 can be circular, square, or any other arbitrary shape. The other sides of the outer casing 1 are closed to protect the engraving machine body 2 inside the cavity. The engraving machine body 2 can be a carbon dioxide laser, mainly including a laser module 21 and a power control board 20. The operating handle 3 can be a cuboid or cylindrical three-dimensional structure, and can be fixed to the outer casing 1 by screws or bolts. The outer surface of the operating handle 3 can also be engraved with anti-slip textures to facilitate a firm grip. Optionally, the edges of the operating handle 3 can also be chamfered to reduce stress concentration at the edges, making the handle edges smoother and providing a better grip. It should be noted that the intensifying lens module 4 can use a combination of biconvex lenses. For example, the main lens has a focal length of 50mm and is made of BK7 glass, which has the characteristics of low chromatic aberration and high transparency; the secondary lens has a focal length of 30mm and is made of quartz glass, which has good high temperature resistance and laser damage resistance. In addition, the intensifying lens module 4 is installed in a metal lens barrel made of aluminum alloy, and the inner wall of the lens barrel is precision machined to ensure its flatness and smoothness, so as to reduce light reflection loss.

[0051] It should be noted that the laser module 21 includes a pump source 211, a heat dissipation structure 212, and a laser control card. The housing 1 also contains a scanning galvanometer module 22, a display screen 13, and a control card. The scanning galvanometer module 22 includes a galvanometer control card and a scanning galvanometer frame. The heat dissipation structure 212 includes a module heat sink and a cooling fan. The cooling fan can be mounted on top of the module heat sink using screws or bolts. X-axis and Y-axis scanning galvanometer motors and reflecting mirrors are mounted on the scanning galvanometer frame. The housing 1 also includes a display screen 13, status indicator lights, a power port, and a power switch. The specific working process is as follows: During engraving, the laser control card first sends a control signal to the pump source 211 according to the input engraving instructions (such as the engraving pattern, engraving speed, etc.) to adjust the power of the pump source 211, thereby determining the laser output power. Simultaneously, the laser control card sends instructions to the galvanometer control card, which controls the X-axis and Y-axis scanning galvanometer motors. The X-axis and Y-axis scanning galvanometer motors rotate according to the received instructions, causing the reflecting mirrors to change angles. The laser beam generated by the laser module 21 shines on the reflective lens, which reflects the laser beam onto the target object. By continuously adjusting the angle of the reflective lens, the laser beam forms a precise engraving path on the target object, thereby achieving the engraving of the pattern.

[0052] In the embodiments of this utility model, please refer to Figure 4 The lens module 4 includes a lens assembly 41 and a lens holder 42. The lens holder 42 is fixedly disposed on the edge of the light outlet 122, and the lens assembly 41 is mounted on the lens holder 42. The central axis of the mirror surface of the lens assembly 41 is collinear with the optical output axis of the laser module 21. The lens holder 42 can be a rectangular or circular frame. Optionally, a slot or threaded structure can be provided on the inner side of the frame to fix the lens assembly 41; it can also be a ring-shaped structure, similar to a cylinder, which rings and fixes the lens assembly 41. Inside the ring-shaped structure, there is an annular positioning step and fixing screw holes. When installing the lens assembly 41, the lens assembly 41 is first placed on the positioning step, and then the lens is fixed by screws passing through the screw holes, effectively preventing the lens from shifting during operation.

[0053] In the embodiments of this utility model, please refer to Figure 5The lens assembly 41 includes a first lens 411 and a second lens 412 coaxially arranged. The first lens 411 is positioned close to the laser module 21, and the second lens 412 is positioned close to the light outlet 122. The first lens 411 is a plano-concave lens, and the second lens 412 is a plano-convex lens. Thus, the laser beam emitted by the laser module 21 first passes through the concave surface of the first lens 411, where it undergoes appropriate laser and energy diffusion, preventing excessive concentration of laser energy in a localized area and reducing the risk of damage to the lens assembly 41. The diffused beam then reaches the second lens 412, where it is refocused by the convex surface. The plano-convex lens focuses the laser beam onto the target engraving area, increasing the laser energy density. This combination of convex and concave lenses allows the laser to form a suitable spot size and energy distribution when it reaches the target area, improving the engraving accuracy and efficiency.

[0054] In embodiments of this invention, both surfaces of the first lens 411 and both surfaces of the second lens 412 are coated with antireflective films. That is, antireflective films can be coated on the outer surfaces of both the first lens 411 and the second lens 412. These antireflective films can be multilayer composite films of titanium dioxide (TiO2) and silicon dioxide (SiO2). By alternating multilayer coatings, a very high antireflective effect can be achieved for specific laser wavelengths (such as the common 1064nm laser wavelength). In addition to the antireflective film, a protective film can also be coated on the outer surface of the second lens 412 on the side facing away from the first lens 411. The protective film can be made of polyethylene terephthalate (PET). PET protective films have good transparency, flexibility, and corrosion resistance, effectively protecting the lens surface and resisting environmental erosion without affecting laser transmission through the antireflective film.

[0055] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 The operating handle 3 is perpendicular to the outer casing 1. This allows the operator to apply force more easily during engraving and avoids interference between the operating handle 3 and other components (such as connecting pipes, circuit cables, etc.) on the same plane. For example, when rotation or push-pull operations are required, the vertical operating handle 3 provides an ergonomic operating direction, reducing wrist twisting and improving operating comfort and accuracy. Especially during prolonged operation, this design can effectively reduce operator fatigue.

[0056] In the embodiments of this utility model, please refer to Figure 2The outer casing 1 is also provided with an array of heat dissipation holes 111. The heat dissipation holes 111 are honeycomb holes or waist-shaped holes. Of course, the heat dissipation holes 111 can also be other shapes that enhance the aesthetics, such as diamond holes, triangular holes, or perforated racetrack holes. The specific arrangement of the heat dissipation holes 111 on the outer casing 1 is not specifically limited. It can be a rectangular array, a circular array, or a concentric circle array, etc., to increase the heat dissipation area of ​​the outer casing 1 and provide more heat dissipation channels within the limited area of ​​the outer casing 1. This helps to quickly dissipate heat inside the device and reduce the internal temperature of the device.

[0057] It should be noted that the laser module 21 also includes a heat dissipation structure 212, and the outer shell 1 is also provided with an air outlet. The arrangement of the heat dissipation hole 111 and the air outlet can form an air channel between the air outlet and the cavity, so that the external gas can enter the interior of the outer shell 1 through the heat dissipation hole 111, flow through the heat dissipation structure 212 and then be discharged from the air outlet. The cooling fan on the heat dissipation structure 212 can accelerate the flow rate of the gas inside the cavity and achieve efficient heat dissipation circulation.

[0058] In the embodiments of this utility model, please refer to Figure 4 , Figure 6 and Figure 7 The outer casing 1 includes a base plate 12 and a side plate 11 connected to each other, forming a cavity. The base plate 12 has a light outlet 122. The laser engraving machine 100 also includes a protective cover 5, which is detachably mounted on the base plate 12. The protective cover 5 can be horn-shaped or cubical in structure and can be made of transparent polycarbonate (PC) material. The protective cover 5 is detachably mounted on the base plate 12, for example, by means of a slot and threaded connection. When assembling the laser engraving machine 100, the engraving machine body 2 is first fixed to the base plate 12 with screws. Then, the side plate 11 is fitted over the outside of the engraving machine body 2, ensuring that internal components (such as the laser module 21, scanning galvanometer module 22, etc.) are installed within this cavity. When the laser engraving machine 100 is working, the light outlet 122 on the base plate 12 provides a channel for laser emission. The laser is emitted from the light outlet 122 according to a pre-calibrated optical path to perform the engraving work.

[0059] It should be noted that the protective cover 5 may also be equipped with a pipe interface 51, which can be integrally molded with the protective cover 5 body using injection molding. The pipe interface 51 is used to connect to an external fume purifier, which can effectively extract dust and smoke. Through the connection of an external fume purifier, smoke and dust can be removed in a timely manner, improving the air quality of the working environment and protecting the health of operators. For example, when carving materials such as wood and plastic, a large amount of wood dust and harmful gases are generated, and the fume purifier can effectively filter and purify these pollutants.

[0060] In the embodiments of this utility model, please refer to Figure 1 and Figure 8 The base plate 12 is also equipped with a magnet 121, and the protective cover 5 is magnetically connected to the base plate 12 via the magnet 121. The magnet 121 can be a neodymium iron boron magnet 121, etc. The protective cover 5 can be made of ferromagnetic material (such as a thin iron sheet) at the position corresponding to the magnet 121. The thin iron sheet can be set on the protective cover 5 by pasting or embedding, and when it is close to the magnet 121 on the base plate 12, it can generate sufficient magnetic attraction with the magnet 121. On the base plate 12, 2 to 4 magnets 121 can be evenly distributed according to the size and weight of the protective cover 5. The magnets 121 can be pasted on the base plate 12 with glue (such as epoxy resin glue) to ensure that the magnets 121 are firmly fixed to the base plate 12 and prevent them from falling off during use.

[0061] In the embodiments of this utility model, please refer to Figure 8 The base plate 12 is also equipped with an air outlet. The laser engraving machine 100 also includes a filter plate 6, which is embedded in the air outlet and has ventilation holes 61 communicating with the cavity. The shape of the air outlet is not specifically limited and can be square or oval; the edges of the air outlet are rounded to reduce airflow resistance. The filter plate 6 can have a multi-layer structure. For example, the innermost layer near the cavity can be a metal mesh (such as stainless steel mesh) with a mesh size of 1-2 mm, mainly used for initial blocking of larger particles; the middle layer can be an activated carbon fiber layer with a thickness of 2-3 mm, used to absorb odors and some small harmful substances; the outermost layer can be a high-efficiency filter membrane (such as a HEPA membrane), which can filter particles larger than 0.3 microns with an efficiency of up to 99.97%. In this way, when the air inside the laser engraving machine 100 needs to be discharged, the air will flow in the direction of the air outlet. First, the air comes into contact with the filter plate 6. When the air passes through the vents 61 on the filter plate 6, larger particles are intercepted by the innermost metal mesh. Then, odors and some tiny harmful substances in the air are adsorbed by the middle activated carbon fiber layer. Finally, the outermost high-efficiency filter membrane further filters out the tiny particles, ensuring that the air flowing out of the vents 61 is relatively clean.

[0062] In the embodiments of this utility model, please refer to Figure 6 The laser engraving machine 100 also includes:

[0063] Base 7;

[0064] The column structure is fixedly mounted on the base 7; and

[0065] Mounting box 9 is slidably arranged along the axial direction of the column structure, and mounting box 9 is provided with a clamping cavity and an installation port communicating with the clamping cavity. The mounting handle of the engraving machine body 2 is detachably inserted into the clamping cavity through the installation port.

[0066] Specifically, in this embodiment, a height-adjustable mounting box 9 is provided on the column structure, and the mounting box 9 has a mounting port for inserting and fixing the mounting handle of the engraving machine body 2. When installing the engraving machine body 2, the user only needs to align the mounting handle of the engraving machine body 2 with the mounting port of the mounting box 9, and then insert it into the clamping cavity along the mounting port. When it is necessary to disassemble the engraving machine body 2, the user only needs to gently pull the engraving machine body 2 outward to overcome the resistance of the elastic clamping device, and the mounting handle can be pulled out of the clamping cavity to complete the disassembly process. In addition, the sliding of the mounting box 9 in the axial direction of the column structure can drive the engraving machine body 2 to rise or fall, realizing the adjustment of the engraving height of the engraving machine body 2. That is to say, the laser engraving machine 100 can be manually adjusted for different angles and heights by holding the operating handle 3, or it can achieve automatic lifting function on the Z-axis by inserting the operating handle 3 into the mounting box 9. It should be noted that the base 7 can adopt a prism structure or a cylindrical structure, and the column structure can be a cylindrical metal rod with a guide groove or track inside to ensure that the mounting box 9 can slide stably along its axis.

[0067] In the embodiments of this utility model, please refer to Figure 6 The column structure includes:

[0068] The column housing 8 is fixedly mounted on the base 7; and

[0069] The lifting assembly is located inside the column housing 8. The lifting assembly is driven to connect with the mounting box 9 to drive the mounting box 9 to slide along the axial direction of the column housing 8.

[0070] Specifically, the lifting assembly can be a screw-nut mechanism or a hydraulic lifting mechanism, etc. When a hydraulic lifting mechanism is used, the cylinder body of the hydraulic cylinder is fixed inside the column housing 8, and the piston is fixedly connected to the mounting box 9. When hydraulic oil is input into the rodless chamber of the hydraulic cylinder, the piston moves upward under the action of oil pressure, driving the mounting box 9 to rise; when hydraulic oil is withdrawn from the rodless chamber, the mounting box 9 descends under its own weight and the action of the piston, thereby realizing the lifting and lowering of the mounting box 9. When a screw-nut mechanism is used, the screw is a slender rod with trapezoidal threads, which is mounted on the column housing 8 through bearings and can rotate freely around its own axis. The nut is used to connect the screw and the mounting box 9 and matches the thread of the screw. When it is necessary to raise the mounting box 9, the screw rotates in the forward direction, and the nut moves upward along the screw under the action of the screw thread, thereby driving the mounting box 9 to rise along the axial direction of the column structure; when it is necessary to lower, the screw rotates in the reverse direction, and the nut drives the mounting box 9 to move downward along the screw.

[0071] In the embodiments of this utility model, please refer to Figure 6The column housing 8 has scale lines 81, located on the side of the column housing 8 facing the engraving machine body 2. The column housing 8 can be made of aluminum alloy, and its length depends on the overall size of the engraving machine body 2, for example, 50-100 cm. The cross-sectional shape of the housing 8 can be square, with a side length of 5-10 cm. The scale lines 81 can be directly marked on the side of the column housing 8 facing the engraving machine body 2 using a laser etching process. The accuracy of the scale lines 81 can reach 1-2 mm; for example, one scale line 81 is marked every 1 mm. The length of the scale lines 81 is 3-5 mm, and the color can be white or yellow for easy identification. When it is necessary to adjust the height of the mounting box 9 on the column structure, the operator first observes the current distance between the engraving machine body 2 and the target product, as well as the distance requirement corresponding to the desired engraving effect. Then, according to the scale lines 81 on the column housing 8, the operator operates the raising or lowering of the mounting box 9 through the corresponding lifting components (such as a screw and nut mechanism or a hydraulic lifting mechanism). For example, if it is necessary to bring the engraving machine body 2 closer to the target product to obtain a deeper engraving depth, the operator can lower the mounting box 9 along the column housing 8 to the specified scale position according to the scale line 81, thereby precisely reducing the distance between the engraving machine body 2 and the target product.

[0072] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A laser engraving machine, characterized in that, The laser engraving machine includes: The outer shell has an internal cavity, and the outer shell is provided with a light outlet communicating with the cavity; The engraving machine body is disposed within the cavity, and the engraving machine body includes a laser module; An operating handle is fixedly disposed on one side of the housing; and An intensifying lens module is disposed at the light output port, and the central axis of the mirror surface of the intensifying lens module is collinear with the optical path output axis of the laser module.

2. The laser engraving machine as described in claim 1, characterized in that, The lens enhancement module includes a lens assembly and a lens bracket. The lens bracket is fixedly disposed on the edge of the light output port, and the lens assembly is mounted on the lens bracket. The central axis of the mirror surface of the lens assembly is collinear with the optical path output axis of the laser module.

3. The laser engraving machine as described in claim 2, characterized in that, The lens assembly includes a first lens and a second lens arranged coaxially. The first lens is positioned close to the laser module, and the second lens is positioned close to the light outlet. The first lens is a plano-concave lens, and the second lens is a plano-convex lens.

4. The laser engraving machine as described in claim 3, characterized in that, Both surfaces of the first lens and both surfaces of the second lens are coated with anti-reflective coatings.

5. The laser engraving machine as described in claim 1, characterized in that, The operating handle is positioned perpendicular to the housing; and / or, The outer casing is also provided with an array of heat dissipation holes, which are honeycomb holes or waist-shaped holes.

6. The laser engraving machine as described in claim 1, characterized in that, The outer casing includes a bottom plate and a side plate connected to each other, the bottom plate and the side plate together forming the cavity, and the bottom plate is provided with the light outlet; the laser engraving machine also includes a protective cover, which is detachably installed on the bottom plate.

7. The laser engraving machine as described in claim 6, characterized in that, The base plate is also provided with a magnet, and the protective cover is magnetically connected to the base plate through the magnet; and / or The base plate is also provided with an air outlet, and the laser engraving machine also includes a filter plate, which is embedded in the air outlet and has ventilation holes that communicate with the cavity.

8. The laser engraving machine as described in any one of claims 1 to 7, characterized in that, The laser engraving machine also includes: Base; The column structure is fixedly mounted on the base; and The mounting box is slidably disposed along the axial direction of the column structure, and the mounting box is provided with a clamping cavity and a mounting port communicating with the clamping cavity. The mounting handle of the engraving machine body is detachably inserted into the clamping cavity through the mounting port.

9. The laser engraving machine as described in claim 8, characterized in that, The column structure includes: The column housing is fixedly mounted on the base; and A lifting assembly is located inside the column housing. The lifting assembly is driven to the mounting box to drive the mounting box to slide along the axial direction of the column housing.

10. The laser engraving machine as described in claim 9, characterized in that, The column housing is provided with scale lines, and the scale lines are located on the side of the column housing facing the engraving machine body.

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