Double-laser processing device

Abstract

The invention relates to the technical field of laser processing, in particular to a double-laser processing device. Comprising a first laser transmitter and a second laser transmitter, the laser engraving machine further comprises a laser engraving head, a rear reflector switching mechanism, a middle reflector switching mechanism and a front reflector adjusting mechanism. The front reflector adjusting mechanism comprises a first front reflector, a second front reflector and a front adjusting mechanism; the middle reflector switching mechanism comprises a first middle reflector, a second middle reflector and a middle switching mechanism; the rear reflector switching mechanism comprises a first rear reflector, a second rear reflector and a rear switching mechanism. By arranging the reflector switching mechanism, when different lasers need to be used, the corresponding reflectors are switched, the absorption loss of the lasers can be effectively reduced, and the laser utilization rate is improved.

Description

[0001] This application is application number: CN202510086355.5, and the invention name is: A divisional application for a dual laser processing device. Technical Field

[0002] The present invention relates to the technical field of laser processing, and in particular to a dual-laser processing device. Background Art

[0003] Lasers of different wavelengths perform differently on workpieces of different materials during processing and cutting. For example, lasers with longer wavelengths have better penetration and can cut wood and leather better. Lasers with shorter wavelengths are better absorbed by metal when cutting metal. In order to facilitate cutting a wider range of materials, many laser processing machines use two laser light sources, such as carbon dioxide laser transmitters and fiber laser transmitters. However, after using two laser light sources, they share a light source reflection system through a beam combiner, that is, the two lasers are introduced into the light source reflection system through the beam combiner and projected onto the laser processing head.

[0004] When reflecting laser light, the reflector also absorbs the laser energy. The same material has different absorption rates for lasers of different wavelengths. To reduce the absorption loss of dual-light source lasers, a reflector material with low absorption for both lasers is generally used. Even so, after multiple reflections, the laser loss is relatively large. Summary of the Invention

[0005] The purpose of the present invention is to provide a dual laser processing device to address the deficiencies of the prior art. The dual laser processing device has a reflector switching mechanism that can effectively reduce the absorption loss of the laser.

[0006] A dual laser processing device, comprising: The first laser emitter and the second laser emitter emit a first laser and a second laser respectively. It also includes: a laser engraving head, a rear reflector switching mechanism, an intermediate reflector switching mechanism, and a front reflector adjustment mechanism; The front reflector adjustment mechanism includes a first front reflector and a second front reflector respectively used to reflect the first laser and the second laser to the intermediate reflector switching mechanism, and a front adjustment mechanism used to adjust the position of the first front reflector; The intermediate reflector switching mechanism includes a first intermediate reflector and a second intermediate reflector for reflecting the first laser and the second laser to the rear reflector switching mechanism respectively, and an intermediate switching mechanism for switching the first intermediate reflector and the second intermediate reflector into an intermediate reflecting position; The rear reflector switching mechanism includes a first rear reflector and a second rear reflector for reflecting the first laser and the second laser to the laser engraving head respectively, and a rear switching mechanism for switching the first rear reflector and the second rear reflector into a rear reflection position.

[0007] Furthermore, the front adjustment mechanism includes a linear mechanism for driving the first front reflector to move or a rotation mechanism for driving the first front reflector to rotate.

[0008] Furthermore, the intermediate switching mechanism includes: an intermediate rotating disk, a rotating sleeve and a base plate, the intermediate rotating disk is provided with two installation positions set at intervals and are respectively used to connect the first intermediate reflector and the second intermediate reflector; the base plate is provided with an axial hole and is rotatably connected to the intermediate rotating shaft, the lower end of the rotating sleeve is open, the upper end of the rotating sleeve is fixedly connected to the intermediate rotating disk, the inner bottom surface of the rotating sleeve is provided with an axial hole and is rotatably connected to the upper end of the intermediate rotating shaft, an elastic transmission part is connected between the rotating sleeve and the intermediate rotating shaft, and the intermediate rotating shaft drives the rotating sleeve to rotate through the elastic transmission part; the intermediate rotating disk is connected to a positioning module, when one of the first intermediate reflector and the second intermediate reflector is located in the intermediate reflection position, the intermediate rotating disk is temporarily positioned by the positioning module, and the elastic transmission part is deformed.

[0009] Furthermore, the inner side surface of the rotating sleeve is provided with a plurality of inner protrusions, the side surface of the rotating shaft is provided with a plurality of outer protrusions, and the elastic transmission member is connected between adjacent inner protrusions and outer protrusions.

[0010] Furthermore, the positioning module includes a positioning sleeve, the lower end of the positioning sleeve is connected to the base plate, the upper end of the positioning sleeve is provided with a mounting hole, a positioning ball and a second elastic member for pushing the positioning ball outward are provided in the mounting hole, the upper end of the positioning ball abuts the lower end surface of the intermediate rotating disk, and the lower end surface of the intermediate rotating disk is provided with two positioning holes, which are arranged corresponding to the first middle reflector and the second middle reflector; when the first middle reflector is located in the middle reflection position, the upper end of the positioning ball enters one of the positioning holes; when the second middle reflector is located in the middle reflection position, the upper end of the positioning ball enters the other positioning hole.

[0011] Furthermore, an intermediate wheel is connected to the lower end of the rotating shaft, and the intermediate wheel is connected to the front adjustment mechanism through a transmission rope assembly. A third elastic member is provided between the intermediate wheel and the base plate for assisting the intermediate wheel in resetting. When the first intermediate reflector is located at the intermediate reflection position, the elastic potential energy of the third elastic member is the smallest. When the second intermediate reflector is located at the intermediate reflection position, the elastic potential energy of the third elastic member is the largest.

[0012] Furthermore, the rear switching mechanism includes: The rear rotating disk is provided with two rotating arms, and the two rotating arms are respectively connected to the first rear reflector and the second rear reflector; The rear base plate is arranged vertically; the upper end of the rear base plate is provided with an axis hole and is rotatably connected to the rear rotating shaft, one end of the rear rotating shaft passes through the axis hole and is connected to the rear rotating disk, and the lower end of the rear base plate is connected to the laser engraving head; An intermediate shaft and a rear transmission shaft, wherein both ends of the intermediate shaft are rotatably connected to the rear transmission shaft and the rear rotating shaft respectively, and a rear elastic transmission member is connected between the rear transmission shaft and the rear rotating shaft; The rear positioning unit is arranged on the rear substrate, and the rear rotating disk is provided with two rear positioning holes for positioning with the positioning unit; when the first rear reflector or the second rear reflector is in the reflecting position, the rear positioning unit is connected to the rear rotating disk through a corresponding rear positioning hole and prevents the rear rotating disk from rotating.

[0013] Furthermore, the outer end of the rear transmission shaft is connected to a rear rotating wheel, which is connected to the front adjustment mechanism or the intermediate switching mechanism through a transmission rope assembly. The back of the rear substrate is connected to a cover body, and the rear bottom plate of the cover body is provided with an axial hole matching the rear transmission shaft. The rear transmission shaft is rotatably connected to the rear bottom plate. A fourth elastic member is connected between the rear bottom plate and the rear rotating wheel. When the first rear reflector is in the rear reflection position, the elastic potential energy of the fourth elastic member is the smallest, and when the second rear reflector is in the rear reflection position, the elastic potential energy of the fourth elastic member is the largest.

[0014] Furthermore, the rear substrate is provided with a rear mounting hole, and the rear positioning unit includes a fifth elastic member and a positioning ball arranged in the rear mounting hole. When the first rear reflector is located in the reflecting position, a part of the positioning ball enters one of the positioning holes; when the second rear reflector is located in the reflecting position, a part of the positioning ball enters the other positioning hole.

[0015] Furthermore, lugs are provided on both sides of the cover body, the lugs are provided with connecting grooves, the rear substrate is provided with connecting holes, and the cover body is fixedly connected to the rear substrate through a connecting piece.

[0016] Furthermore, an XY moving mechanism is included, which includes an X moving mechanism and Y moving mechanisms located on both sides of the X moving mechanism, the X moving mechanism is connected to the Y moving mechanisms on both sides, the rear substrate is connected to the X moving mechanism, and the intermediate reflector switching mechanism is provided on the X moving mechanism. The transmission rope assembly includes a flexible sleeve and a core wire, and the middle portion of the core wire is sleeved with the flexible sleeve and can move relative to the flexible sleeve.

[0017] Furthermore, the linear mechanism includes a bracket, which is provided with a fixedly connected base plate and a vertical support plate, the front of the vertical support plate is connected to a vertical guide rail and a vertically arranged servo motor, the vertical guide rail is slidably connected to a vertical slider, the servo motor is driven and connected to a lead screw, the lead screw is threadedly connected to a nut block, the nut block is fixedly connected to a lifting block, one end of the lifting block is fixedly connected to the vertical slider, and the other end of the lifting block is fixedly connected to the first front reflector.

[0018] Furthermore, N dimming reflectors are provided between the first laser emitter and the first front reflector, and / or N dimming reflectors are provided between the second laser reflector and the second front reflector.

[0019] Beneficial effects of the present invention: The present invention provides a reflector switching mechanism, which switches to a corresponding reflector when different lasers are used, thereby effectively reducing the absorption loss of the laser and improving the laser utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the working principle of the laser engraving machine of this embodiment.

[0021] Figure 2 This is a schematic diagram of the second working principle of the laser engraving machine in this embodiment.

[0022] Figure 3 Schematic diagram of the structure of the laser engraving machine of this embodiment.

[0023] Figure 4 for Figure 3 Another perspective structural diagram.

[0024] Figure 5 Schematic diagram of the structure of the middle reflector switching mechanism in this embodiment.

[0025] Figure 6 for Figure 5 A schematic diagram of the structure without the positioning sleeve.

[0026] Figure 7 This is a schematic diagram of the coordination between the middle rotating disk, the middle rotating shaft and the rotating sleeve of this embodiment.

[0027] Figure 8 for Figure 7 A decomposition diagram of .

[0028] Figure 9 for Figure 8 Schematic diagram from another perspective.

[0029] Figure 10 A structural diagram of a positioning sleeve.

[0030] Figure 11 This is a structural diagram of the rear reflector switching mechanism and the laser engraving head in accordance with this embodiment.

[0031] Figure 12 for Figure 11 Schematic diagram from another perspective.

[0032] Figure 13 for Figure 12 A schematic diagram of the structure without the cover.

[0033] Figure 14 for Figure 13 Enlarged schematic diagram of point A in the middle.

[0034] Figure 15 A schematic diagram of the cooperation between the rear positioning unit and the rear rotating disk.

[0035] Figure 16 A structural diagram of the front reflector adjustment mechanism.

[0036] Reference numerals: 1 - Laser engraving head; 2 - Rear reflector switching mechanism; 3 - Intermediate reflector switching mechanism; 4 - Front reflector adjustment mechanism; 5 - First laser emitter; 6 - Second laser emitter; 7 - Dimming reflector; 10 - Transmission rope assembly; 21 - First rear reflector; 22 - Second rear reflector; 23 - Rear rotating disk; 24 - Rotating arm; 25 - Rear base plate; 26 - Cover; 27 - Fourth elastic member; 28 - Rear rotating wheel; 29 - Rear transmission shaft; 210 - Intermediate shaft; 211 - Rear elastic transmission member; 212 - Rear rotating shaft; 213 - Positioning ball; 214 - Fifth elastic member; 261 - Lug; 262 - Connecting groove; 31 - First intermediate reflector; 32 - Second intermediate reflector; 33 - Base plate; 34 - Intermediate rotating disk; 35 - Positioning sleeve; 36 - Rotating sleeve; 37 - Third elastic member; 38 - Intermediate wheel ;39—elastic transmission part;310—transfer shaft;311—external protrusion;341—positioning hole;342—connecting column;351—positioning column;352—positioning ball;353—second elastic part;361—inner protrusion;362—axis hole;363—connecting hole;41—first front reflector;42—second front reflector;43—screw;44—lifting block;45—nut block;46—servo motor;47—vertical guide rail;48—vertical slider;49—vertical support plate;410—base plate;8—XY moving mechanism;81—X moving mechanism;82—Y moving mechanism. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0038] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0041] The present invention will be described in detail below with reference to the accompanying drawings. Figures 1 to 16 shown.

[0042] Example 1: See Figures 1 to 4 A dual-laser processing device comprises: a first laser emitter 5 and a second laser emitter 6 for emitting a first laser and a second laser respectively; further comprising: a laser engraving head 1, a rear reflector switching mechanism 2, an intermediate reflector switching mechanism 3 and a front reflector adjustment mechanism 4; wherein: the front reflector adjustment mechanism 4 comprises a first front reflector 41 and a second front reflector 42 for reflecting the first laser and the second laser respectively to the intermediate reflector switching mechanism 3, and a front adjustment mechanism for adjusting the position of the first front reflector 41; the intermediate reflector switching mechanism 3 comprises a first intermediate reflector 31 and a second intermediate reflector 32 for reflecting the first laser and the second laser respectively to the rear reflector switching mechanism 2, and an intermediate switching mechanism for switching the first intermediate reflector 31 and the second intermediate reflector 32 into an intermediate reflection position; the rear reflector switching mechanism 2 comprises a first rear reflector 21 and a second rear reflector 22 for reflecting the first laser and the second laser respectively to the laser engraving head 1, and a rear switching mechanism for switching the first rear reflector 21 and the second rear reflector 22 into a rear reflection position.

[0043] This technical solution improves the existing dual-light source laser processing machine, and replaces the existing single intermediate reflector and single rear reflector with an intermediate reflector mechanism and a rear reflector mechanism respectively; when in use, in the initial state: the front reflector is located at the first front reflection position, the first intermediate reflector is located at the intermediate reflection position, and the first rear reflector 21 is located at the rear reflection position; at this time, if the first laser emitter 5 is working and the second laser emitter 6 is not working; the front adjustment mechanism, the intermediate switching mechanism, and the rear switching mechanism do not need to be operated; the first laser is projected onto the first front reflector 41, and then reflected sequentially to the first intermediate reflector, the first rear reflector 21 and the laser engraving head 1. When the second laser emitter 6 is switched to operation, the first laser emitter 5 stops operating. At this time, the front adjustment mechanism moves the first front reflector 41 out of the first front reflective position. The second front reflector 42 remains in the second front reflective position, with the first front reflector 41 positioned between the second front reflector 42 and the intermediate reflector switching mechanism 3. The intermediate switching mechanism activates, moving the first intermediate reflector 31 out of the intermediate reflective position and the second intermediate reflector 32 into the intermediate reflective position. The rear switching mechanism also activates, moving the first rear reflector 21 out of the rear reflective position and the second rear reflector 22 into the rear reflective position. The second laser beam is projected onto the second front reflector 42, then reflected onto the second intermediate reflector 32, then onto the second rear reflector 22, and finally onto the laser engraving head 1. When the first laser emitter 5 is switched back to operation, the second laser emitter 6 stops operating. The front adjustment mechanism moves the first front reflector 41 into the first front reflective position, the intermediate switching mechanism moves the first intermediate reflector 31 into the intermediate reflective position, and the rear switching mechanism moves the first rear reflector 21 into the rear reflective position.

[0044] It can be seen that when the first laser emitter 5 is working, the first laser is reflected in sequence by the first front reflector 41, the first middle reflector 31 and the first rear reflector 21; when the second laser emitter 6 is working, the second laser is reflected in sequence by the second front reflector 42, the second middle reflector 32 and the second rear reflector 22; therefore, in the specific setting, the first front reflector 41, the first middle reflector 31 and the first rear reflector 21 can select the reflective material with the lowest absorption rate for the first laser; similarly, the second front reflector 42, the second middle reflector 32 and the second rear reflector 22 can select the reflective material with the lowest absorption rate for the second laser; thereby effectively reducing the absorption of laser energy, reducing absorption loss, and improving laser utilization.

[0045] The front adjustment mechanism includes a linear mechanism for driving the first front reflector 41 to move or a rotation mechanism for driving the first front reflector 41 to rotate.

[0046] The front adjustment mechanism is used to adjust the position of the first front reflector 41, and is used to move the first front reflector 41 into or out of the first front reflection position; when moving in or out, a movable linear mechanism can be used; and a rotating mechanism can be used; when using a linear mechanism, a linear module can be used, such as a linear motor, a cylinder, etc., to drive the first front reflector 41 to move linearly; secondly, when moving, it can move in any horizontal direction, or it can move in the vertical direction and the inclined direction, and can be adjusted according to actual needs; when rotating, an eccentric rotation method can be used, such as fixing the first front reflector 41 at the eccentric position of the turntable, and the motor drives the turntable to rotate.

[0047] See also Figures 5 to 9 The intermediate switching mechanism includes: an intermediate rotating disk 34, a rotating sleeve 36 and a base plate 33. The intermediate rotating disk 34 is provided with two installation positions arranged at intervals and is respectively used to connect the first intermediate reflector 31 and the second intermediate reflector 32; the base plate 33 is provided with an axial hole and is rotatably connected to the intermediate rotating shaft 310. The lower end of the rotating sleeve 36 is open, and the upper end of the rotating sleeve 36 is fixedly connected to the intermediate rotating disk 34. The inner bottom surface of the rotating sleeve 36 is provided with an axial hole 362 and is rotatably connected to the upper end of the intermediate rotating shaft 310. An elastic transmission member 39 is connected between the rotating sleeve 36 and the rotating shaft 310, and the rotating shaft 310 drives the rotating sleeve 36 to rotate through the elastic transmission member 39; the intermediate rotating disk 34 is connected to a positioning module. When one of the first intermediate reflector 31 and the second intermediate reflector 32 is in the intermediate reflection position, the intermediate rotating disk 34 is temporarily positioned by the positioning module, and the elastic transmission member 39 is deformed.

[0048] When designing the switching between the first and second intermediate reflectors 31 and 32, the present embodiment adopts a combination of the intermediate rotating disk 34 and the intermediate rotating disk 34. The first and second intermediate reflectors 31 and 32 are fixed to the intermediate rotating disk 34. The intermediate rotating disk 34 is indirectly connected to the intermediate rotating disk 310, and the intermediate rotating disk 34 is driven by an external force to rotate the intermediate rotating disk 34, thereby realizing the position switching of the first and second intermediate reflectors 31 and 32, and switching to the intermediate reflecting position. When the intermediate rotating disk 34 is driven to rotate by the intermediate rotating disk 34 via the intermediate rotating disk 310 for position switching, due to laser reflection, the angular position requirement of the rotation of the intermediate rotating disk 34 is extremely strict, and the current transmission mechanism and driving mechanism have certain errors. For this reason, technicians in this field generally adopt high-precision transmission mechanism and driving mechanism, but this is bound to lead to a sharp increase in cost. For this reason, the present embodiment adopts The positioning and buffering technologies are combined, and a positioning module is used to position the intermediate reflection position of the intermediate rotating disk 34. When the intermediate rotating disk 34 rotates to the point where one of the first intermediate reflector 31 and the second intermediate reflector 32 is located at the intermediate reflection position, the positioning module positions the intermediate rotating disk 34, temporarily fixing the intermediate rotating disk 34 and meeting the laser reflection requirements. At the same time, a rotating sleeve 36 is added. The rotating sleeve 36 is fixedly connected to the intermediate rotating disk 34, and the rotating sleeve 36 is rotatably connected to the central rotating shaft 310 so that they can rotate freely with each other. At the same time, the central rotating shaft 310 is connected to the rotating sleeve 36 via an elastic transmission member 39. When the central rotating shaft 310 rotates, the rotating sleeve 36 is driven to rotate by the elastic transmission member 39. When the rotating sleeve 36 drives the intermediate rotating disk 34 to rotate to the point where one of the first intermediate reflector 31 and the second intermediate reflector 32 is located at the intermediate reflection position, the intermediate rotating disk 34 and the rotating sleeve 36 stop rotating. The elastic transmission member 39 may still retain elastic potential energy, but this elastic potential energy is insufficient to cause the positioning module to release the intermediate rotating disk 34. Secondly, the rotating sleeve 36 and the intermediate rotating disk 34 can be fixedly connected by bonding or other methods. In this embodiment, see Figure 8 . Figure 9 The middle rotating disk 34 has a connecting column 342 extending downward, and the rotating sleeve 36 has a connecting hole 363. The connecting column 342 is inserted into the connecting hole 363 to fix the middle rotating disk 34 and the rotating sleeve 36. The connecting column 342 and the connecting hole 363 can be an interference fit connection.

[0049] It is understandable that, in order to facilitate driving the rotating sleeve 36 and the intermediate rotating disk 34 to rotate to the predetermined position, the rotation angle of the intermediate rotating shaft 310 can be slightly larger than the rotation angle of the rotating sleeve 36, such as the rotation angle of the intermediate rotating shaft 310 is 1-5 degrees larger than the rotation angle of the rotating sleeve 36. For the convenience of description, the initial setting is: the first intermediate reflector 31 is located at the intermediate reflection position, and the starting rotation angles of the intermediate rotating shaft 310 and the rotating sleeve 36 are both 0; when switching, the intermediate rotating shaft 310 rotates under external force, and the intermediate rotating shaft 310 applies a pulling force to the rotating sleeve 36 through the elastic transmission member 39. Initially, since the positioning force of the positioning module on the intermediate rotating disk 34 is relatively large, the elastic potential energy of the elastic transmission member 39 cannot be overcome; when the intermediate rotating shaft 310 rotates a certain angle, such as 20 or 30 degrees, the elastic transmission member When the elastic potential energy accumulated by the 39 is able to overcome the positioning force of the positioning module on the intermediate rotating disk, the elastic transmission member 39 drives the rotating sleeve 36 and the intermediate rotating disk 34 to rotate, the positioning module releases the intermediate rotating disk, and the potential energy of the elastic transmission member 39 gradually decreases and approaches 0; when the second intermediate reflector 32 on the intermediate rotating disk 34 enters the intermediate reflection position, the positioning module positions the intermediate rotating disk 34 again, the intermediate rotating disk 34 and the rotating sleeve 36 stop rotating, and the angle of rotation of the rotating shaft 310 exceeds the angle of rotation of the rotating sleeve 36. If the rotation angle of the rotating sleeve 36 is A degrees at this time, the rotation angle of the rotating shaft 310 is (A+B) degrees; B is 1-5, and A can be 90-180, such as 90, 135 or 180; the elastic transmission member 39 maintains a slight deformation and always exerts a pulling force on the rotating sleeve 36.

[0050] When switching again, the rotating shaft 310 rotates in the opposite direction under the external force, and the elastic potential energy of the elastic transmission member 39 first decreases to 0 and then increases. When the elastic potential energy of the elastic transmission member 39 can once again overcome the positioning resistance of the positioning module to the intermediate rotating disk 34, the elastic transmission member 39 drives the rotating sleeve 36 to rotate, and the intermediate rotating disk 34 also rotates; the elastic potential energy of the elastic transmission member 39 gradually decreases and approaches 0; when the first intermediate reflector 31 on the intermediate rotating disk 34 enters the intermediate reflection position, the positioning module positions the intermediate rotating disk 34 again, the intermediate rotating disk 34 and the rotating sleeve 36 stop rotating, and the rotation angle of the rotating shaft 310 will successively exceed the rotation angle of the rotating sleeve 36. At this time, the position of the rotating sleeve 36 corresponds to an angle of 0 degrees, and the position of the rotating shaft 310 corresponds to an angle of -B degrees; the elastic transmission member 39 still has a slight deformation. The range of B can be 1-5.

[0051] During the switching process, regardless of whether the first intermediate reflector 31 or the second intermediate reflector is switched to the intermediate reflective position, the elastic transmission member 39 always maintains a slight deformation; the rotation angle of the intermediate rotating shaft 310 is greater than the rotation angle of the rotating sleeve 36, thereby ensuring that the intermediate rotating disk 34 can smoothly switch the first intermediate reflector 31 or the second intermediate reflector 32. Secondly, the intermediate rotating shaft 310 can be rotatably connected to the rotating sleeve 36 and the base plate 33 respectively through the intermediate rotating shaft 310.

[0052] See also Figure 8 The inner side surface of the rotating sleeve 36 is provided with a plurality of inner protrusions 361 , the side surface of the rotating shaft 310 is provided with a plurality of outer protrusions 311 , and the elastic transmission member 39 is connected between adjacent inner protrusions 361 and outer protrusions 311 .

[0053] To enable the rotating sleeve 36 to rotate with the rotating shaft 310, this embodiment employs a tracking mechanism. Internal protrusions 361 are provided on the inner side of the rotating sleeve 36, and external protrusions 311 are provided on the side of the rotating shaft 310. Elastic transmission members 39, such as elastic cords, tension springs, are connected between adjacent internal and external protrusions 361 and 311. Upon rotation of the rotating shaft 310, the external protrusions 311, via the elastic transmission members 39, drive the internal protrusions 361, thereby driving the rotating platform to rotate. In this embodiment, two internal and external protrusions 361 and 311 are provided; however, three or more internal and external protrusions may also be provided.

[0054] See also Figure 5 、 Figure 7 as well as Figure 10 The positioning module includes a positioning sleeve 35, the lower end of the positioning sleeve 35 is connected to the base plate 33, and a plurality of positioning posts 351 are provided at the lower end of the positioning sleeve 35, and the base plate 33 is provided with a plug-in hole that matches the positioning posts 351; the upper end of the positioning sleeve 35 is provided with a mounting hole, and a positioning ball 352 and a second elastic member 353 for pushing the positioning ball 213 outward are provided in the mounting hole, and the upper end of the positioning ball 352 abuts against the lower end surface of the intermediate rotating disk 34, and the lower end surface of the intermediate rotating disk 34 is provided with two positioning holes 341, and the two positioning holes 341 are correspondingly arranged with the first middle reflector 31 and the second middle reflector 32; when the first middle reflector 31 is in the middle reflecting position, the upper end of the positioning ball 213 enters one of the positioning holes 341; when the second middle reflector 32 is in the middle reflecting position, the upper end of the positioning ball 352 enters the other positioning hole 341.

[0055] The positioning module can only position the intermediate rotating disk 34 when one of the first intermediate reflector 31 or the second intermediate reflector 32 enters the intermediate reflective position. At other times, it exerts little or no force on the intermediate rotating disk 34 to avoid hindering the rotation of the intermediate rotating disk 34. In this embodiment, the positioning ball 213 cooperates with the positioning hole 341. Two corresponding positioning holes 341 are provided on the lower end surface of the intermediate rotating disk 34. A mounting hole is provided on the upper end of the positioning sleeve 35. A second elastic member 353 and a positioning ball 352 are disposed within the mounting hole. When the first laser emitter 5 is operating, the first middle reflector 31 is located at the intermediate reflective position, and the positioning ball 352 is engaged with one of the positioning holes 341. When switching is required, the first elastic member applies tension to the rotating sleeve 36, and the intermediate rotating disk 34 overcomes the resistance of the positioning ball 352. The intermediate rotating disk 34 pushes the positioning ball 213 toward the positioning hole 341 and rotates until the other positioning hole 341 on the intermediate rotating disk 34 faces the positioning ball 352, and the positioning ball 352 engages the other positioning hole 341. The positioning hole 341 is a spherical crown hole, and its volume is no larger than 1 / 2 of the positioning ball 352; it can be 1 / 4, 1 / 3, 1 / 2, etc., of the positioning ball 352.

[0056] See also Figure 6 The lower end of the rotating shaft 310 is connected to an intermediate wheel 38, which is connected to the front adjustment mechanism through a transmission rope assembly 10. A third elastic member 37 is provided between the intermediate wheel 38 and the base plate 33 for assisting the intermediate wheel 38 in resetting. When the first intermediate reflector 31 is located at the intermediate reflection position, the elastic potential energy of the third elastic member 37 is the smallest; when the second intermediate reflector 32 is located at the intermediate reflection position, the elastic potential energy of the third elastic member 37 is the largest.

[0057] During switching, the front adjustment mechanism, the middle switching mechanism, and the rear switching mechanism may all be activated or deactivated simultaneously. These three mechanisms can be driven individually by three drive devices, which results in high costs. Furthermore, since these three mechanisms may be located relatively far apart, wiring is difficult, and wireless signal control would also inevitably increase costs. Therefore, this embodiment employs a linkage structure, with the front adjustment mechanism connected to the middle wheel 38 via a transmission rope assembly 10. When adjusting the position of the first front reflector 41, the front adjustment mechanism rotates the middle wheel 38 via the transmission rope assembly 10, which in turn rotates the middle shaft 310, thereby achieving switching between the first middle reflector 31 and the second middle reflector 32.

[0058] During operation, the details are as follows: 1. In the initial state, the first laser emitter 5 is working, the first front reflector 41 is in the front reflective position, and the first middle reflector 31 is in the middle reflective position; 2. When the second laser emitter 6 is switched to work, the first emitter does not work; the front adjustment mechanism drives the first front reflector 41 to leave the first front reflective position, and at the same time drives the intermediate wheel 38 to rotate through the transmission rope assembly 10, and when the intermediate wheel 38 rotates, it drives the rotating shaft 310 to rotate, and at the same time, the deformation of the third elastic member 37 increases, and the elastic potential energy increases; the potential energy of the second elastic member 353 also increases. When the resistance of the positioning ball 213 to the intermediate rotating disk 34 can be overcome, the rotating shaft 310 drives the rotating sleeve 36 and the intermediate rotating disk 34 to rotate through the second elastic member 353. When the second intermediate reflector 32 is in the intermediate reflection position, the other positioning hole 341 of the intermediate rotating disk 34 cooperates with the positioning ball 213 to form an insertion, the intermediate rotating disk 34 and the rotating sleeve 36 stop rotating, the intermediate wheel 38 and the rotating shaft 310 still rotate forward a small angle and stop, at this time the elastic potential energy of the third elastic member 37 reaches the maximum, and the second elastic member 353 still maintains a small elastic potential energy. 3. When the first laser emitter 5 is switched back to work again, the second laser emitter 6 stops working, the front adjustment mechanism drives the first front reflector 41 into the first front reflection position, the front adjustment mechanism will release the transmission rope assembly 10, the transmission rope assembly 10 no longer applies power to the intermediate wheel 38, the intermediate wheel 38 loses power, at this time the third elastic member 37 releases its own elastic potential energy, the third elastic member 37 drives the intermediate wheel 38 and the rotating shaft 310 to rotate, the elastic potential energy of the second elastic member 353 begins to gradually decrease to 0 and then increases, when the elastic force of the second elastic member 353 is sufficient to overcome the positioning ball 352 on the intermediate rotating disk 34 When the resistance is met, the rotating sleeve 36 and the intermediate rotating disk 34 rotate under the pull of the second elastic member 353; the elastic force of the second elastic member 353 decreases; when the positioning ball 352 cooperates with the positioning hole 341 of the intermediate rotating disk 34 to form an insertion, the rotating sleeve 36 and the intermediate rotating disk 34 stop rotating, and the third elastic member 37 continues to release elastic potential energy. The intermediate rotating wheel and the intermediate rotating shaft 310 continue to rotate a small angle, and the elastic potential energy of the second elastic member 353 increases slightly. Finally, the third elastic member 37 still maintains the minimum elastic potential energy, and the pulling force of the third elastic member 37 and the second elastic member 353 on the intermediate rotating shaft 310 reaches a balance. By providing the third elastic member 37 and the transmission rope assembly 10, physical linkage can be achieved.

[0059] See also Figures 11 to 15 , the rear switching mechanism includes: a rear rotating disk 23 and a rear base plate 25; the rear rotating disk 23 is provided with two rotating arms 24, the two rotating arms 24 are respectively connected to the first rear reflector 21 and the second rear reflector 22; the rear base plate 25 is vertically arranged, see Figure 14The upper end of the rear substrate 25 is provided with an axial hole and is rotatably connected to a rear rotating shaft 212. One end of the rear rotating shaft 212 passes through the axial hole and is connected to the rear rotating disk 23. The lower end of the rear substrate 25 is connected to the laser engraving head 1; it also includes an intermediate shaft 210, a rear transmission shaft 29 and a rear positioning unit arranged on the rear substrate 25. The two ends of the intermediate shaft 210 are rotatably connected to the rear transmission shaft 29 and the rear rotating shaft 212 respectively. A rear elastic transmission member 211 is connected between the rear transmission shaft 29 and the rear rotating shaft 212; the rear rotating disk 23 is provided with two rear positioning holes for positioning with the positioning unit; when the first rear reflector 21 or the second rear reflector 22 is in the reflecting position, the rear positioning unit is connected to the rear rotating disk 23 through a corresponding rear positioning hole and prevents the rear rotating disk 23 from rotating.

[0060] The rear switching mechanism adopts two rotating arms 24 of the rear rotating disk 23 to connect with the first rear reflector 21 and the second rear reflector 22, and the first rear reflector 21 and the second rear reflector 22 are switched to the rear reflection position by the rotation of the rear rotating disk 23; secondly, the rear rotating disk 23 is connected with the rear rotating shaft 212, and the rear rotating shaft 212 is rotatably connected with the rear base plate 25, and the rear rotating shaft 212 can rotate freely relative to the rear base plate 25; in specific implementation, the rear rotating shaft 212 can be connected with the rear base plate 25 through a bearing to achieve free rotation; it can be understood that: the rotation of the rear rotating shaft 212 can be directly controlled to control the switching of the first rear reflector 21 and the second rear reflector 22; but Since laser reflection requires very high precision, if the rotation of the rear shaft 212 is directly controlled, a higher driving device is required, which is more expensive; if the precision is low, laser reflection cannot be accurately achieved; for this reason, the present application adopts a combination of the rear positioning unit, the rear drive shaft 29 and the rear elastic transmission member 211. The rear drive shaft 29 rotates after being driven by an external force, and the rear drive shaft 29 drives the rear shaft 212 to rotate through the rear elastic transmission member 211, and then drives the rear rotating disk 23 to rotate. When the first rear reflector 21 or the second rear reflector 22 enters the rear reflection position, the rear positioning unit positions the rear rotating disk 23 and prevents the rear rotating disk from rotating, thereby ensuring the accuracy of the optical path.

[0061] In the initial state: the first rear reflector 21 is in the rear reflection position, and the rear positioning unit positions the rear rotating disk 23; when switching, the rear transmission shaft 29 rotates under the drive of an external force. In the initial stage, the resistance of the rear positioning unit to the rear rotating disk 23 is relatively large, the rear rotating shaft 212 remains stationary, and the rear elastic transmission member continues to deform and accumulate elastic potential energy; when the elastic potential energy accumulated by the rear elastic transmission member can overcome the resistance of the rear positioning unit to the rear rotating disk 23, the rear rotating disk 23 breaks away from the positioning point and rotates, and the rear rotating shaft 212 quickly The rear transmission shaft 29 rotates and closely catches up with the rear reflection mirror 22, and the elastic potential energy of the rear elastic transmission member 211 gradually decreases; when the second rear reflector 22 enters the rear reflection position, the rear positioning unit positions the rear rotating disk 23 again. At this time, the elastic potential energy of the rear elastic transmission member 211 cannot overcome the resistance of the rear positioning unit to the rear rotating disk 23, and the rear rotating disk 23 and the rear rotating shaft 212 stop rotating. At this time, the rear transmission shaft 29 also stops rotating or continues to rotate at a very small angle and then stops. The elastic potential energy of the rear elastic transmission member 211 finally remains in a relatively small potential energy state. When switching again, the rear transmission shaft 29 rotates in the opposite direction under the drive of external force. Similarly, in the initial stage, the resistance of the rear positioning unit to the rear rotating disk 23 is relatively large, the rear shaft 212 and the rear rotating disk 23 remain stationary, and the elastic potential energy of the rear elastic transmission member 211 first decreases to 0 and then continues to increase and accumulate elastic potential energy; when the elastic potential energy accumulated by the rear elastic transmission member 211 is able to overcome the resistance of the rear positioning unit to the rear rotating disk 23, the rear rotating disk 23 breaks away from the positioning point and rotates, and the rear shaft 212 rotates rapidly and tightly The rear transmission shaft 29 is caught up, and the elastic potential energy of the rear elastic transmission member 211 gradually decreases; when the first rear reflector 21 enters the rear reflection position, the rear positioning unit positions the rear rotating disk 23 again. At this time, the elastic potential energy of the rear elastic transmission member 211 cannot overcome the resistance of the rear positioning unit to the rear rotating disk 23, and the rear rotating disk 23 and the rear rotating shaft 212 stop rotating. At this time, the rear transmission shaft 29 also stops rotating or continues to rotate at a very small angle and then stops. The elastic potential energy of the rear elastic transmission member 211 finally maintains a relatively small potential energy state.

[0062] When the first rear reflector 21 or the second rear reflector 22 enters the rear reflection position, the rear positioning unit positions the rear rotating disk 23 again. In order to ensure that the rear rotating disk 23 can drive the first rear reflector 21 and the second rear reflector 22 to enter the rear reflection position, the rear transmission elastic unit 211 always maintains elastic potential energy, i.e., deformation, to prevent the rear transmission shaft 29 from being unable to drive the rear rotating shaft 212 and the rear rotating disk 23 to rotate to the predetermined position. Secondly, the rotation angle range of the rear transmission shaft 29 is greater than the rotation range of the rear rotating shaft 212, and the rotation angle of the rear transmission shaft 29 has lower requirements on accuracy. Generally speaking, when switching, it is only necessary for the rotation angle of the rear transmission shaft 29 to be greater than 0-10 degrees of the rotation angle of the rear rotating shaft 212, so as to ensure that when the positioning unit positions the rear rotating disk 23, the rear transmission elastic member 211 has a smaller elastic potential energy, which cannot drive the rotating disk out of the positioning point.

[0063] The ends of the intermediate shaft 210 can be connected to the rear transmission shaft 29 and the rear rotating shaft 212 respectively through bearings, so that the rotation of the rear transmission shaft 29 and the rear rotating shaft 212 does not interfere with each other. The rear transmission elastic member 211 can be: a torsion spring, a rubber band, a tension spring, etc.

[0064] See also Figure 13 、 Figure 14 The outer end of the rear transmission shaft 29 is connected to the rear rotating wheel 28, and the rear rotating wheel 28 is connected to the front adjustment mechanism or the middle switching mechanism through the transmission rope assembly 10. Figure 12 The back of the rear substrate 25 is connected to a cover body 26. The rear bottom plate of the cover body 26 is provided with an axial hole that cooperates with the rear transmission shaft 29. The rear transmission shaft 29 is rotatably connected to the rear bottom plate. A fourth elastic member 27 is connected between the rear bottom plate and the rear rotating wheel 28. When the first rear reflector 21 is in the rear reflection position, the elastic potential energy of the fourth elastic member 27 is the smallest. When the second rear reflector 22 is in the rear reflection position, the elastic potential energy of the fourth elastic member 27 is the largest.

[0065] During switching, the rear switching mechanism can be driven by an independent drive mechanism; for example, a servo motor 46 is connected to the rear shaft 212. This servo motor 46 drives the rear shaft 212, thereby driving the rear rotating disk 23. However, in this embodiment, to simplify the structure and reduce costs, a linkage structure is employed. The front adjustment mechanism directly drives the rear rotating wheel 28 via the transmission rope assembly 10, or the front adjustment mechanism drives the rear rotating wheel 28 via an intermediate switching mechanism. Furthermore, the transmission rope assembly 10 is unidirectional when transmitting power, so this embodiment also employs a fourth elastic member 27.

[0066] In the initial state, since the fourth elastic member 27 has a smaller elastic potential energy, the rear transmission shaft 29 rotates a smaller angle toward the side close to the fourth elastic member 27, and the rear transmission elastic member 211 also has a smaller elastic potential energy and maintains balance with the fourth elastic member 27. At this time, the first rear reflector 21 is located in the rear reflection position, the rear positioning unit positions the rear rotating disk 23, and the rear rotating disk 23 shifts to the first positioning point. The rear transmission elastic member 211 cannot drive the rear rotating shaft 212 and the rear rotating disk 23 to rotate. When switching, driven by the front adjustment mechanism, the rear rotating wheel 28 is driven to rotate through the transmission rope assembly 10, the rear rotating shaft 212 rotates, and the elastic potential energy of the fourth elastic member 27 continues to increase; the elastic potential energy of the rear transmission elastic member 211 first decreases to 0 and then increases and accumulates until the elastic potential energy of the rear transmission elastic member 211 can drive the rear rotating disk 23 to rotate, and the rear rotating disk 23 leaves the positioning point. Driven by the rear transmission elastic member, the rear rotating disk 23 rotates along with the rear rotating shaft 212; the elastic potential energy of the rear transmission elastic member 211 decreases and may approach 0; when the second rear reflector 22 enters the rear reflection position, the rear rotating disk 23 and the rear rotating shaft 310 stop rotating; at this time, the rear rotating wheel 28 stops rotating or continues to rotate a smaller angle, such as 1-3 degrees; the elastic potential energy of the rear transmission elastic member 211 increases slightly, but is still very small and not enough to drive the rear rotating disk 23 to leave the second positioning point; at the same time, the deformation of the fourth elastic member 27 reaches the maximum, and it has the maximum elastic potential energy.

[0067] When switching again, the front adjustment mechanism releases the transmission rope assembly 10, and the transmission rope assembly 10 no longer applies force to the rotating wheel. The fourth elastic member 27 applies a reverse force to the rotating wheel, which drives the rear transmission shaft 29 to rotate in the opposite direction. The elastic potential energy of the rear transmission elastic member 211 decreases to 0 and then increases until it can drive the rear rotating disk 23 away from the second positioning point. The elastic potential energy of the rear transmission elastic member 211 decreases again, and drives the rear rotating shaft 212 and the rear rotating disk 23 to rotate. When the first rear reflector 21 enters the rear reflective position, the rear rotating disk 23 reaches the first positioning point, and the rear rotating disk 23 and the rear rotating shaft 212 stop rotating. The elastic potential energy of the rear transmission elastic member 211 is too small to drive, and the fourth elastic member 27 continues to drive the rear transmission shaft 29 to rotate a very small angle. The elastic potential energy of the rear transmission elastic member 211 increases and reaches equilibrium with the fourth elastic member 27 again, and the fourth elastic member 27 returns to the minimum elastic potential energy state, which is greater than 0. The fourth elastic member 27 can be a torsion spring, a tension spring, an elastic rope, etc. The cover body 26 can support the rear transmission shaft 29 and assist in connecting the fourth elastic member 27. The cover body 26 can be connected to the rear transmission shaft 29 through a bearing to form a rotational connection.

[0068] See also Figure 15The rear substrate 25 is provided with a rear mounting hole, and the rear positioning unit includes a fifth elastic member 214 and a positioning ball 352 provided in the rear mounting hole. When the first rear reflector 21 is located in the reflecting position, a part of the positioning ball 352 enters one of the rear positioning holes; when the second rear reflector 22 is located in the reflecting position, a part of the positioning ball 352 enters the other rear positioning hole.

[0069] Pushed by the fifth elastic member 214, the positioning ball 352 has a tendency to leave the rear mounting hole. The positioning hole is a spherical crown hole, with 1 / 4-1 / 2 of the positioning ball 352; when the first rear reflector 21 and the second rear reflector 22 are not in the reflection position, the positioning ball 352 abuts against the rear substrate 25. When the rear substrate 25 rotates, the positioning ball 352 can also rotate. The friction between the two is relatively small and can be ignored. When the first rear reflector 21 or the second rear reflector 22 is in the reflection position, the positioning ball 352 enters the rear positioning hole, and the positioning ball 352 forms a snap connection with the rear vertical substrate 33, thereby preventing the rotation of the rear rotating disk 23. Preferably, the positioning hole is 2 / 5, 3 / 7, etc. of the positioning ball 352. Of course, the rear positioning unit can also be directly a positioning protrusion set on the rear substrate 25, and the positioning protrusion cooperates with the rear positioning hole.

[0070] See also Figure 12 , lugs 261 are provided on both sides of the cover body 26 , the lugs 261 are provided with connecting grooves 262 , the rear substrate 25 is provided with connecting holes, and the cover body 26 is fixedly connected to the rear substrate 25 through a connecting piece.

[0071] To facilitate the connection between the cover body 26 and the rear substrate 25 , in this embodiment, lugs 261 are provided on both sides of the cover body 26 , and the lugs 261 are connected to the rear substrate 25 via connectors, which may be screws or bolts.

[0072] See also Figure 3 、 Figure 4 , further comprising an XY moving mechanism 8, the XY moving mechanism 8 comprising an X moving mechanism 81 and Y moving mechanisms 82 located on both sides of the X moving mechanism 81, the X moving mechanism 81 being connected to the Y moving mechanisms 82 on both sides, the rear substrate 25 being connected to the X moving mechanism 81, the intermediate reflector switching mechanism 3 being disposed on the X moving mechanism 81, the transmission rope assembly 10 comprising a flexible sleeve and a core wire, the middle portion of the core wire being sleeved with the flexible sleeve and being movable relative to the flexible sleeve.

[0073] In order to facilitate the planar movement of the laser engraving head 1, this embodiment further provides an XY moving mechanism 8. The Y moving mechanism 82 can drive the X moving mechanism 81 to move longitudinally, and the X moving mechanism 81 drives the rear substrate 25 and the laser engraving head 1 to move laterally, thereby realizing the planar two-dimensional movement of the laser engraving head 1. When the laser engraving head 1 moves in a plane, the intermediate reflector switching mechanism 3 will also move longitudinally along with the X-moving mechanism 81, and the laser engraving head 1 and the rear substrate 25 will move laterally under the drive of the X-moving mechanism 81. Therefore, the rear reflector switching mechanism 2 will move laterally under the drive of the X-moving mechanism 81. It can be seen that the distance between the intermediate reflector switching mechanism 3 and the front reflector adjustment mechanism 4 will change, and the distance between the rear reflector switching mechanism 2 and the intermediate reflector switching mechanism 3 and the front reflector adjustment mechanism 4 will also change. These changes will directly affect the transmission rope assembly 10. In order to ensure that the front reflector adjustment mechanism 4 can still drive the rear reflector switching mechanism 2 and the intermediate reflector switching mechanism 3 through the transmission rope assembly 10 during these changes, the transmission rope assembly 10 in this embodiment is configured as a combination of a flexible sleeve and a core wire. The flexible sleeve is fixed to the frame. If necessary, a drag chain can be provided. The flexible sleeve is connected to the drag chain. The flexible sleeve is deformed along with the drive of the XY moving mechanism 8. The front adjustment mechanism of the front reflector adjustment mechanism 4 is connected to the reflector switching mechanism and the intermediate reflector switching mechanism 3 respectively through the core wire. It is understood that the front adjustment mechanism is switchably connected to the intermediate reflector via a transmission cable assembly 10, wherein the front adjustment mechanism is connected to the intermediate rotating wheel via a core wire. The front adjustment mechanism is switchably connected to the rear reflector via another transmission cable assembly 10, wherein the front adjustment mechanism is connected to the rear rotating wheel 28 via a corresponding core wire. Alternatively, the intermediate reflector switching mechanism 3 is switchably connected to the rear reflector via another transmission cable assembly 10, wherein the intermediate rotating wheel is connected to the rear rotating wheel 28 via a corresponding core wire. When the XY movement mechanism 8 drives the laser engraving head 1 in a two-dimensional planar motion, the flexible sleeve and the core wire change accordingly. When switching, the core wire moves relative to the flexible sleeve. For example, the front adjustment mechanism drives the intermediate rotating wheel and the rear rotating wheel 28 to rotate via the core wire; or the front adjustment mechanism releases the core wire, which is then wound around the intermediate rotating wheel and the rear rotating wheel 28. The flexible sleeve can be made of plastic, silicone, rubber, or other materials, and the core wire can be made of metal wire, such as copper or steel.

[0074] The X-moving mechanism 81 and the Y-moving mechanism 82 can both adopt linear modules, such as linear motors, lead screw 43 nut mechanisms, etc., which can adopt existing technologies.

[0075] See also Figure 16The linear mechanism includes a bracket, which is provided with a fixedly connected base plate 410 and a vertical support plate 49. The front of the vertical support plate 49 is connected to a vertical guide rail 47 and a vertically arranged servo motor 46. The vertical guide rail 47 is slidably connected to a vertical slider 48. The servo motor 46 is driven by a lead screw 43. The lead screw 43 is threadedly connected to a nut block 45. The nut block 45 is fixedly connected to a lifting block 44. One end of the lifting block 44 is fixedly connected to the vertical slider 48, and the other end of the lifting block 44 is fixedly connected to the first front reflector 41.

[0076] In this embodiment, the front adjustment mechanism adopts a linear mechanism, specifically a vertically arranged linear module. The linear module adopts a screw 43 and nut structure to drive the screw 43 to rotate through a servo motor 46. When the screw 43 rotates, the nut block 45 moves up and down along the screw 43. To ensure that its movement is linear, this embodiment also provides a vertical guide rail 47 and a vertical slider 48. The vertical slider 48 and the nut block 45 are respectively connected to the lifting block 44. The lifting block 44 moves up and down linearly under the drive of the nut block 45 and the guidance of the vertical slider 48. At the same time, the lifting block 44 drives the first front reflector 41 to move up and down. Secondly, since the position of the second front reflector 42 is always in a fixed state, it is set on the vertical support plate 49 in this embodiment for convenience. Of course, it can also be set on the frame. At the same time, the lifting block 44 is also fixedly connected to the core wire. When the lifting block 44 is lifted and lowered, it drives the core wire to move, and drives the intermediate switching mechanism and the rear switching mechanism to work together through the core wire. In this embodiment, the first front reflector 41 is initially located at the first front reflective position. When switching, the lifting block 44 drives the first front reflector 41 away from the first front reflective position. The lifting block 44 pulls the core wires, driving the intermediate switching mechanism and the rear switching mechanism to operate synchronously, thereby performing the corresponding switching. The core wires can be arranged according to actual needs.

[0077] See also Figure 2 N dimming reflectors 7 are provided between the first laser emitter 5 and the first front reflector 41 , and / or N dimming reflectors 7 are provided between the second laser reflector and the second front reflector 42 .

[0078] During the specific setting, the positions of the first laser emitter 5 and the second laser emitter 6 are not fixed and can be set according to the setting of the rack. In order to facilitate the adjustment of the optical path so that the first laser or the second laser is projected onto the first front reflector 41 or the second front reflector 42 in a predetermined direction, a dimming reflector 7 can be set to improve the optical path.

[0079] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A dual laser processing device comprising: The first laser emitter and the second laser emitter emit a first laser and a second laser respectively. It is characterized by: further comprising: a laser engraving head, a rear reflector switching mechanism, an intermediate reflector switching mechanism and a front reflector adjusting mechanism; The front reflector adjustment mechanism includes a first front reflector and a second front reflector respectively used to reflect the first laser and the second laser to the intermediate reflector switching mechanism, and a front adjustment mechanism used to adjust the position of the first front reflector; The intermediate reflector switching mechanism includes a first intermediate reflector and a second intermediate reflector for reflecting the first laser and the second laser to the rear reflector switching mechanism respectively, and an intermediate switching mechanism for switching the first intermediate reflector and the second intermediate reflector into an intermediate reflecting position; The rear reflector switching mechanism includes a first rear reflector and a second rear reflector for reflecting the first laser and the second laser to the laser engraving head respectively, and a rear switching mechanism for switching the first rear reflector and the second rear reflector into a rear reflection position; The rear switching mechanism includes: The rear rotating disk is provided with two rotating arms, and the two rotating arms are respectively connected to the first rear reflector and the second rear reflector; The rear base plate is arranged vertically; the upper end of the rear base plate is provided with an axis hole and is rotatably connected to the rear central shaft, one end of the rear central shaft passes through the axis hole and is connected to the rear rotating disk, and the lower end of the rear base plate is connected to the laser engraving head; The intermediate shaft and the rear transmission shaft, the two ends of the intermediate shaft are respectively connected to the rear transmission shaft and the rear intermediate shaft for rotation, and a rear elastic transmission member is connected between the rear transmission shaft and the rear intermediate shaft; The rear positioning unit is provided on the rear substrate, and the rear rotating disk is provided with two rear positioning holes for positioning with the positioning unit; when the first rear reflector or the second rear reflector is in the reflecting position, the rear positioning unit is connected to the rear rotating disk through the corresponding rear positioning hole and prevents the rear rotating disk from rotating; The outer end of the rear transmission shaft is connected to a rear rotating wheel, which is connected to the front adjustment mechanism or the intermediate switching mechanism through a transmission rope assembly. The back of the rear base plate is connected to a cover body. The rear bottom plate of the cover body is provided with an axial hole that matches the rear transmission shaft. The rear transmission shaft is rotatably connected to the rear bottom plate. A fourth elastic member is connected between the rear bottom plate and the rear rotating wheel. When the first rear reflector is in the rear reflection position, the elastic potential energy of the fourth elastic member is minimum. When the second rear reflector is in the rear reflection position, the elastic potential energy of the fourth elastic member is maximum. The rear substrate is provided with a rear mounting hole, and the rear positioning unit includes a fifth elastic member and a positioning ball arranged in the rear mounting hole. When the first rear reflector is located in the reflecting position, a part of the positioning ball enters one of the positioning holes; when the second rear reflector is located in the reflecting position, a part of the positioning ball enters the other positioning hole.

2. The dual laser processing device according to claim 1, characterized in that: Lugs are provided on both sides of the cover body, and the lugs are provided with connecting grooves. The rear substrate is provided with connecting holes, and the cover body is fixedly connected to the rear substrate through a connecting piece.

3. The dual laser processing device according to claim 1, wherein: The front adjustment mechanism includes a linear mechanism for driving the first front reflector to move or a rotation mechanism for driving the first front reflector to rotate.

4. The dual laser processing device according to claim 1, wherein: The intermediate switching mechanism includes: an intermediate rotating disk, a rotating sleeve and a base plate. The intermediate rotating disk is provided with two installation positions set at intervals and are respectively used to connect the first intermediate reflector and the second intermediate reflector; the base plate is provided with an axial hole and is rotatably connected to the intermediate rotating shaft. The lower end of the rotating sleeve is open, and the upper end of the rotating sleeve is fixedly connected to the intermediate rotating disk. The inner bottom surface of the rotating sleeve is provided with an axial hole and is rotatably connected to the upper end of the intermediate rotating shaft. An elastic transmission part is connected between the rotating sleeve and the intermediate rotating shaft, and the intermediate rotating shaft drives the rotating sleeve to rotate through the elastic transmission part; the intermediate rotating disk is connected to a positioning module. When one of the first intermediate reflector and the second intermediate reflector is located in the intermediate reflection position, the intermediate rotating disk is temporarily positioned by the positioning module, and the elastic transmission part is deformed.

5. The dual laser processing device according to claim 4, characterized in that: The inner side surface of the rotating sleeve is provided with a plurality of inner convex blocks, the side surface of the rotating shaft is provided with a plurality of outer convex blocks, and the elastic transmission member is connected between adjacent inner convex blocks and adjacent outer convex blocks.

6. The dual laser processing device according to claim 5, characterized in that: The positioning module includes a positioning sleeve, the lower end of the positioning sleeve is connected to the base plate, the upper end of the positioning sleeve is provided with a mounting hole, a positioning ball and a second elastic member for pushing the positioning ball outward are provided in the mounting hole, the upper end of the positioning ball abuts the lower end surface of the intermediate rotating disk, the lower end surface of the intermediate rotating disk is provided with two positioning holes, and the two positioning holes are arranged corresponding to the first middle reflector and the second middle reflector; when the first middle reflector is located in the middle reflection position, the upper end of the positioning ball enters one of the positioning holes; when the second middle reflector is located in the middle reflection position, the upper end of the positioning ball enters the other positioning hole.

7. The dual laser processing device according to claim 6, characterized in that: The lower end of the rotating shaft is connected to an intermediate wheel, which is connected to the front adjustment mechanism through a transmission rope assembly. A third elastic member is provided between the intermediate wheel and the base plate for assisting the intermediate wheel in resetting. When the first intermediate reflector is located at the intermediate reflection position, the elastic potential energy of the third elastic member is the smallest. When the second intermediate reflector is located at the intermediate reflection position, the elastic potential energy of the third elastic member is the largest.

8. The dual laser processing device according to claim 5, characterized in that: The system further includes an XY moving mechanism, which includes an X moving mechanism and Y moving mechanisms located on both sides of the X moving mechanism. The X moving mechanism is connected to the Y moving mechanisms on both sides. The rear substrate is connected to the X moving mechanism. The intermediate reflector switching mechanism is provided on the X moving mechanism. The transmission rope assembly includes a flexible sleeve and a core wire. The middle portion of the core wire is sleeved with the flexible sleeve and can move relative to the flexible sleeve.

9. The dual laser processing device according to claim 3, characterized in that: The linear mechanism includes a bracket, which is provided with a fixedly connected base plate and a vertical support plate, the front of the vertical support plate is connected to a vertical guide rail and a vertically arranged servo motor, the vertical guide rail is slidably connected to a vertical slider, the servo motor is driven and connected to a lead screw, the lead screw is threadedly connected to a nut block, the nut block is fixedly connected to a lifting block, one end of the lifting block is fixedly connected to the vertical slider, and the other end of the lifting block is fixedly connected to the first front reflector.

10. The dual laser processing device according to claim 1, wherein: N dimming reflectors are provided between the first laser emitter and the first front reflector, and / or N dimming reflectors are provided between the second laser reflector and the second front reflector, where N is a positive integer.

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