A mirror switching assembly and dual laser engraver

Abstract

The utility model relates to laser processing device technical field especially, relates to a mirror switching assembly and double laser engraving machine.A kind of mirror switching assembly, it includes fixed frame, and fixed frame is fixedly connected with first reflector, and fixed frame is connected with moving mechanism, and the moving mechanism is drivenly connected with second reflector, and moving mechanism drives second reflector to enter or leave reflecting position.The utility model is switched to the laser of the emission of 2 laser emitters by setting mirror switching assembly, avoids that laser transmits lens and causes that laser loss is larger, is favorable for improving laser utilization.

Description

Technical Field

[0001] This utility model relates to the field of laser processing equipment technology, and in particular to a mirror switching assembly and a dual laser engraving machine. Background Technology

[0002] Currently, small and medium-sized laser engraving machines generally use a single light source. However, single-light-source laser engraving machines have limitations in material application when engraving. For example, longer-wavelength lasers have low absorption rates when cutting metals, but better penetration capabilities for non-metallic materials; shorter-wavelength lasers have better absorption rates when cutting metals. To make laser engraving machines suitable for most materials and to achieve higher laser utilization, many manufacturers have developed dual-light-source laser engraving machines. In dual-light-source laser engraving machines, the two lasers share a common reflection system. The two lasers are combined using a combining mirror. One laser is reflected through the combining mirror, and the other is transmitted through it, thus unifying the reflection and transmission paths. The other laser, during transmission, needs to pass through the interface between the combining mirror and air twice, resulting in relatively large energy losses due to refraction through the lens and interface. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a mirror switching assembly that can avoid laser transmission through lenses and reduce laser energy loss.

[0004] Another objective of this invention is to provide a dual laser engraving machine, which has two laser light sources and the aforementioned mirror switching assembly, thereby preventing laser penetration through the lens and improving laser utilization.

[0005] A reflector switching assembly includes a mounting bracket, a first reflector fixedly connected to the mounting bracket, and a moving mechanism connected to the mounting bracket. The moving mechanism drives a second reflector to enter or leave a reflecting position.

[0006] Furthermore, the fixing frame includes a base plate, a vertical support plate is connected to the middle of the base plate, the upper end of the vertical support plate is connected to the first reflector through a connecting frame, the moving mechanism is disposed on the front of the vertical support plate, the moving mechanism includes a linear module for driving the second reflector to move, the second reflector is connected to a connecting plate, an extension block is provided on one side of the connecting plate, and the extension block is connected to the linear module.

[0007] Preferably, the linear module includes a lead screw motor, a motor mounting base is connected to the lower front end of the vertical support plate, the motor mounting base is connected to the lead screw motor, a T-shaped nut block is threaded onto the lead screw of the lead screw motor, a vertical guide rail is connected to the front of the vertical support plate, a vertical slider is slidably connected to the vertical guide rail, the extension block is L-shaped, the vertical section of the extension block is fixedly connected to the vertical slider, the horizontal section of the extension block has a through hole that matches the head of the T-shaped nut block, the head of the T-shaped nut block passes through the through hole, and the tail of the T-shaped nut block is fixedly connected to the horizontal section.

[0008] Furthermore, position sensors are connected to the upper and lower ends of the back of the vertical support plate, and a sensing block that cooperates with the position sensors is connected to the back of the connecting plate.

[0009] Furthermore, the position sensor is connected to the vertical support plate via a position connecting piece. The position connecting piece is L-shaped, and its vertical section has a vertical connecting groove. The vertical support plate has a connecting hole corresponding to the vertical connecting groove. The position connecting piece is fixedly connected to the vertical support plate via a connector, and its horizontal section is connected to the position sensor.

[0010] Furthermore, the connecting frame includes an L-shaped plate, the vertical section of which has a vertical adjustment groove, and the vertical support plate has a connecting hole. A connector is provided in the vertical adjustment groove, and one end of the connector is inserted into the connecting hole and connected to the vertical support plate. Preferably, the horizontal section of the L-shaped plate has a horizontal adjustment groove, and a connector is provided in the horizontal adjustment groove. The L-shaped plate is connected to the first reflector through this connector.

[0011] Furthermore, a reinforcing plate connects the vertical support plate to the base plate.

[0012] Furthermore, a pad is provided below the base plate, and the base plate is provided with several horizontally or vertically arranged downward adjustment grooves. The pad is provided with connecting holes; the base plate is connected to the pad through a connector.

[0013] Preferably, the base plate has multiple threaded holes and is threadedly connected to an adjusting stud, the lower end of which abuts against the pad; more preferably, the adjusting stud is threadedly connected to a fastening nut.

[0014] A dual laser engraving machine includes a frame on which two laser emitters are mounted. The frame also includes the aforementioned mirror switching assembly, planar two-dimensional moving mechanism, and laser engraving head. The planar two-dimensional moving mechanism is connected to the laser engraving head and drives the laser engraving head to move laterally or longitudinally. One laser emitter is located on one side of a first mirror, and the other laser emitter is located below a second mirror. An intermediate mirror is provided between the other laser emitter and the second mirror.

[0015] The beneficial effects of this utility model are as follows: By setting up a reflector switching assembly, this utility model switches the laser emitted by two laser emitters, avoiding laser penetration through the lens and causing large laser loss, which is conducive to improving laser utilization. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one structure of the mirror switching assembly in this embodiment.

[0017] Figure 2 for Figure 1 A structural diagram from the second perspective.

[0018] Figure 3 This is a schematic diagram of one structure of the dual laser engraving machine in this embodiment.

[0019] Figure label:

[0020] 1—Connecting frame; 2—Horizontal adjustment slot; 3—First reflector; 4—Second reflector; 5—Motor; 6—Connecting plate; 7—Lead screw; 8—T-nut block; 9—Vertical support plate; 10—Connector; 11—Vertical slider; 12—Vertical guide rail; 13—Reinforcing plate; 14—Base plate; 15—Pad plate; 16—Lower adjustment slot; 17—Adjusting stud; 18—Fastening nut; 19—Vertical adjustment slot; 20—Reflector switching assembly; 21—Connecting piece; 22—Vertical connecting slot; 23—Position sensor; 24—Sensing block; 25—Extension block; 26—Motor mounting base; 30—Frame; 31—Second laser emitter; 32—First laser emitter; 33—Intermediate reflector; 40—Planar two-dimensional moving mechanism; 50—Laser engraving head; 100—Fixed frame. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] The present invention will now be described in detail with reference to the accompanying drawings. Figures 1 to 2 As shown.

[0026] Example 1: See Figure 1 , Figure 2 A reflector switching assembly 20 includes a mounting bracket 100, a first reflector 3 fixedly connected to the mounting bracket 100, and a moving mechanism connected to the mounting bracket 100. The moving mechanism drives the second reflector 4 to enter or leave the reflection position.

[0027] This technical solution combines with existing dual-light source laser engraving machines. Currently, existing dual-light source laser engraving machines operate with the two laser sources working in a staggered manner; that is, only one light source projects laser light outwards during laser engraving. Therefore, the reflector switching assembly 20 in this technical solution is located on the front side where the two laser beams are combined. The two laser sources are a first laser emitter and a second laser emitter, respectively, and correspond to the first reflector 3 and the second reflector 4, emitting the first laser and the second laser outwards respectively. The first reflector 3 reflects the first laser to the reflection system, and the second reflector 4 reflects the second laser to the reflection system. The reflection system reflects both the first and second lasers to the laser engraving head 50. The first laser emitter and the second laser emitter are located at different positions on the dual laser engraving machine. Since the light from the first and second lasers reflected by the first reflector 3 and the second reflector 4 enters the same optical path, the first reflector 3 can be located on the optical path of the second laser, or the second reflector 4 can be located on the optical path of the first laser. In this embodiment, the second reflector 4 is located on the optical path of the first laser.

[0028] During operation, when the first laser emitter is working, the first laser beam is projected onto the first reflector 3 and reflected by the first reflector 3 into the reflection system. If the second reflector 4 is located in the optical path at this time, it can be moved out of the reflection position and away from the optical path of the first laser beam by a moving mechanism. When switching to the second laser emitter, if the second reflector 4 is located outside the reflection position, it is moved to the reflection position by a moving mechanism, and the second laser beam is reflected by the second reflector 4 into the reflection system.

[0029] The two lasers are reflected by the first reflector 3 and the second reflector 4 respectively; the second reflector 4 is driven to enter or leave the reflection position by a moving mechanism, so as to switch between the two lasers. There is no need to penetrate the lens during use, which can effectively improve the utilization rate of the laser.

[0030] See Figure 1 , Figure 2 The fixing frame 100 includes a base plate 14, a vertical support plate 9 is connected to the middle of the base plate 14, the upper end of the vertical support plate 9 is connected to the first reflector 3 through a connecting frame 1, the moving mechanism is disposed on the front of the vertical support plate 9, the moving mechanism includes a linear module for driving the second reflector 4 to move, the second reflector 4 is connected to a connecting plate 6, an extension block 25 is provided on one side of the connecting plate 6, and the extension block 25 is connected to the linear module.

[0031] To facilitate connection with the first reflector 3 and the second reflector 4, a vertical support plate 9 is provided on the fixing frame 100 in this embodiment. The first reflector 3 is directly fixed to the upper end of the vertical support plate 9. A linear module is connected to the vertical support plate 9. The linear module is connected to the second reflector 4 through a connecting plate 6, and the second reflector 4 is driven to move up and down through the connecting plate 6, thereby moving into or out of the reflection position.

[0032] Preferably, the linear module includes a lead screw motor, a motor mounting base 26 is connected to the lower front end of the vertical support plate 9, the motor mounting base 26 is connected to the motor 5 of the lead screw motor, the lead screw 7 of the lead screw motor is threadedly connected to a T-shaped nut block 8, a vertical guide rail 12 is connected to the front of the vertical support plate 9, a vertical slider 11 is slidably connected to the vertical guide rail 12, the extension block 25 is L-shaped, the vertical section of the extension block 25 is fixedly connected to the vertical slider 11, the horizontal section of the extension block 25 is provided with a through hole that matches the head of the T-shaped nut block 8, the head of the T-shaped nut block 8 passes through the through hole, and the tail of the T-shaped nut block 8 is fixedly connected to the horizontal section.

[0033] The linear module can be made of cylinders, etc. Since laser reflection is used, high positional accuracy is required. Therefore, this embodiment uses a combination of a lead screw motor and a guide rail slider. The vertical guide rail 12 and the vertical slider 11 guide the extension block 25 to move linearly up and down, and also guide the connecting plate 6 and the second reflector 4 to move linearly up and down, ensuring no shaking or positional deviation during movement. To facilitate connection with the vertical slider 11 and the T-shaped nut block 8, the extension block 25 is L-shaped, with its vertical and horizontal sections connected to the vertical slider 11 and the T-shaped nut block 8, respectively. In specific connection, the vertical section is connected to the vertical slider 11 by bolts, and the horizontal section is also connected to the tail of the T-shaped nut block 8 by bolts. Setting the nut block as T-shaped results in a larger connection length in the middle of the nut block, making movement more stable.

[0034] See Figure 2 The vertical support plate 9 has position sensors 23 connected to its upper and lower ends on its back side, and the connecting plate 6 has a sensing block 24 connected to the back side of the connecting plate 6 to cooperate with the position sensors 23.

[0035] Two position sensors 23 and a sensing block 24 are provided to control the moving mechanism to drive the connecting plate 6 to move up and down. In specific implementation, when it is necessary to drive the second reflector 4 to move upward, the moving mechanism drives the connecting plate 6 to move upward until the position sensor 23 located above senses the sensing block 24. At this time, the second reflector 4 enters the reflection position. Similarly, when it is necessary to drive the second reflector 4 to leave the reflection position, the moving mechanism drives the connecting plate 6 to move downward until the position sensor 23 located below senses the sensing block 24. At this time, the second reflector 4 leaves the reflection position and does not interfere with the first laser.

[0036] See Figure 2 The position sensor 23 is connected to the vertical support plate 9 via a position connecting piece 21. The position connecting piece 21 is L-shaped, and the vertical section of the position connecting piece 21 is provided with a vertical connecting groove 22. The vertical support plate 9 is provided with a connecting hole corresponding to the vertical connecting groove 22. The position connecting piece 21 is fixedly connected to the vertical support plate 9 via a connector 10, and the horizontal section of the position connecting piece 21 is connected to the position sensor 23.

[0037] When installing the position sensor 23, its height needs to be adjusted. To facilitate this adjustment, this embodiment uses a vertical connecting groove 22 for connection. After setting the vertical connecting groove 22, the vertical section of the position connecting piece 21 can be adjusted up and down relative to the vertical support plate 9. The position sensor 23 can be a photoelectric sensor, a Hall sensor, a proximity switch, etc., which is existing technology. In this embodiment, the position sensor 23 is a photoelectric sensor. The photoelectric sensor has a sensing hole that cooperates with the sensing block 24. When the sensing block 24 enters or exits the sensing hole, the photoelectric sensor sends a sensing signal to the control system. The control system controls the movement mechanism.

[0038] See Figure 2 The connecting frame 1 includes an L-shaped plate. The vertical section of the L-shaped plate has a vertical adjustment groove 19, and the vertical support plate 9 has a connecting hole. A connector 10 is provided in the vertical adjustment groove 19, and one end of the connector 10 is inserted into the connecting hole and connected to the vertical support plate 9. Preferably, the horizontal section of the L-shaped plate has a horizontal adjustment groove 2, and the connector 10 is provided in the horizontal adjustment groove 2. The L-shaped plate is connected to the first reflector 3 through the connector 10.

[0039] The first reflector 3 is used to reflect the first laser. During installation, the position of the first reflector 3 needs to be adjusted. To facilitate adjustment, especially in the vertical direction, the connecting frame 1 of this technical solution is set as an L-shaped plate. The vertical section of the L-shaped plate is equipped with a connecting piece 10 via a vertical adjustment groove 19. The connecting piece 10 can move relative to the vertical adjustment. The connecting piece 10 can be bolts, etc., thereby allowing adjustment of the height of the L-shaped plate, and thus adjusting the height of the first reflector 3. Secondly, to facilitate horizontal or vertical adjustment, the horizontal section of the L-shaped plate is provided with a horizontal adjustment groove 2. The first reflector 3 can move along the horizontal adjustment groove 2, thereby allowing for horizontal or vertical adjustment.

[0040] See Figure 1 , Figure 2 A reinforcing plate 13 connects the vertical support plate 9 to the base plate 14.

[0041] To improve the structural strength of the fixing frame 100, a reinforcing plate 13 is provided in this embodiment. The reinforcing plate 13 is arranged in the shape of a right triangle, and the two right-angled sides of the reinforcing plate 13 are fixedly connected to the vertical support plate 9 and the base plate 14, respectively.

[0042] See Figure 1 , Figure 2 A pad 15 is provided below the base plate 14. The base plate 14 is provided with a plurality of horizontally or vertically arranged lower adjustment grooves 16. The pad 15 is provided with connection holes. The base plate 14 is connected to the pad 15 through a connector 10.

[0043] See Figure 1The base plate 14 is provided with multiple threaded holes and is threadedly connected to an adjusting stud 17, the lower end of which abuts against the pad 15; more preferably, the adjusting stud 17 is threadedly connected to a fastening nut 18.

[0044] A pad 15 is provided below the base plate 14, allowing the mounting to be placed on the frame 30 of the dual laser engraving machine. To further facilitate the adjustment of the fixed frame 100's position, a lower adjustment groove 16 is provided on the base plate 14, allowing the fixed frame 100 to be adjusted along the length of the lower adjustment groove 16. The adjusting stud 17 can be a bolt, or an adjusting sleeve can be provided at the upper end of the adjusting stud 17 for easy operation.

[0045] Secondly, during installation, the height of the fixing bracket 100 needs to be adjusted. To facilitate height adjustment, this embodiment is designed with an adjusting stud 17. The height of the base plate 14 is adjusted by the cooperation of the adjusting stud 17 and the connector 10.

[0046] Example 2: See Figure 3 A dual laser engraving machine includes a frame 30, on which two laser emitters are mounted. The frame 30 also includes the aforementioned mirror switching assembly 20, a planar two-dimensional moving mechanism 40, and a laser engraving head 50. The planar two-dimensional moving mechanism 40 is connected to the laser engraving head 50 and drives the laser engraving head 50 to move laterally or longitudinally. One laser emitter is located on one side of the first mirror 3, and the other laser emitter is located below the second mirror 4. An intermediate mirror 33 is provided between the other laser emitter and the second mirror 4.

[0047] The dual-laser engraving machine employs two laser emitters, which can be positioned in different locations as needed. In this embodiment, the two laser emitters are designated as a first laser emitter 32 and a second laser emitter 31. The first laser emitter 32 is positioned at the rear of the frame 30, and the second laser emitter 31 is positioned below and to the side. An intermediate reflector 33 is provided between the second laser emitter 31 and the second reflector 4 to change the projection direction of the second laser. The planar two-dimensional moving mechanism 40 includes a transverse moving mechanism and a longitudinal moving mechanism connected to each other. The transverse moving mechanism is connected to the laser engraving head 50, and the transverse and longitudinal moving mechanisms cooperate to drive the laser engraving head 50 to move laterally and longitudinally. Both the planar two-dimensional moving mechanism 40 and the laser engraving head 50 can be existing technologies.

[0048] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A mirror switching assembly, comprising a mounting bracket, wherein a first mirror is fixedly connected to the mounting bracket, characterized in that: The fixed frame is connected to a moving mechanism, which drives a second reflector to enter or leave the reflection position.

2. The mirror switching assembly according to claim 1, characterized in that: The fixed frame includes a base plate, a vertical support plate is connected to the middle of the base plate, the upper end of the vertical support plate is connected to the first reflector through a connecting frame, the moving mechanism is disposed on the front of the vertical support plate, the moving mechanism includes a linear module for driving the second reflector to move, the second reflector is connected to a connecting plate, an extension block is provided on one side of the connecting plate, and the extension block is connected to the linear module.

3. The mirror switching assembly according to claim 2, characterized in that: The linear module includes a lead screw motor. A motor mounting base is connected to the lower front end of the vertical support plate. The motor mounting base is connected to the lead screw motor. A T-shaped nut block is threaded onto the lead screw of the lead screw motor. A vertical guide rail is connected to the front of the vertical support plate. A vertical slider is slidably connected to the vertical guide rail. The extension block is L-shaped. The vertical section of the extension block is fixedly connected to the vertical slider. The horizontal section of the extension block has a through hole that matches the head of the T-shaped nut block. The head of the T-shaped nut block passes through the through hole, and the tail of the T-shaped nut block is fixedly connected to the horizontal section.

4. The mirror switching assembly according to claim 3, characterized in that: The vertical support plate has position sensors connected to its upper and lower ends on its back side, and a sensing block that cooperates with the position sensors is connected to the back side of the connecting plate.

5. The mirror switching assembly according to claim 4, characterized in that: The position sensor is connected to the vertical support plate via a position connecting piece. The position connecting piece is L-shaped, and the vertical section of the position connecting piece has a vertical connecting groove. The vertical support plate has a connecting hole corresponding to the vertical connecting groove. The position connecting piece is fixedly connected to the vertical support plate via a connector, and the horizontal section of the position connecting piece is connected to the position sensor.

6. The mirror switching assembly according to claim 2, characterized in that: The connecting frame includes an L-shaped plate. The vertical section of the L-shaped plate is provided with a vertical adjustment groove. The vertical support plate is provided with a connecting hole. A connector is provided in the vertical adjustment groove. One end of the connector is inserted into the connecting hole and connected to the vertical support plate. The horizontal section of the L-shaped plate is provided with a horizontal adjustment groove. A connector is provided in the horizontal adjustment groove. The L-shaped plate is connected to the first reflector through the connector.

7. The mirror switching assembly according to claim 2, characterized in that: A reinforcing plate connects the vertical support plate to the base plate.

8. The mirror switching assembly according to claim 2, characterized in that: A pad is provided below the base plate. The base plate has several horizontally or vertically arranged downward adjustment grooves, and the pad has connecting holes. The base plate is connected to the pad through a connector.

9. The mirror switching assembly according to claim 8, characterized in that: The base plate is provided with multiple threaded holes and threadedly connected to adjusting studs. The lower end of the adjusting studs abuts against the pad plate, and the adjusting studs are threadedly connected to fastening nuts.

10. A dual laser engraving machine, comprising a frame on which two laser emitters are mounted, characterized in that: The frame is also equipped with a mirror switching assembly, a planar two-dimensional moving mechanism, and a laser engraving head as described in any one of claims 1 to 9; the planar two-dimensional moving mechanism is connected to the laser engraving head and drives the laser engraving head to move laterally or longitudinally; one laser emitter is disposed on one side of the first mirror, the other laser emitter is disposed below the second mirror, and an intermediate mirror is provided between the other laser emitter and the second mirror.

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