Cutting device and laser processing equipment

Abstract

This application discloses a beam cutting device and laser processing equipment. The beam cutting device includes a cavity, a swing arm, an optical lens, and an extinction device. The cavity has an inlet and an outlet, forming an optical path between them. The swing arm is rotatably mounted in the cavity and has at least three phases. The optical lens and the extinction device are respectively mounted on the swing arm. A driving component drives the swing arm to rotate and switch between the three phases. In the first phase, the optical lens is located in the optical path to change the mode of the laser. In the second phase, the extinction device is located in the optical path to block the laser from passing through. In the third phase, the swing arm, optical lens, and extinction device allow the laser to pass through while avoiding the optical path. Therefore, this beam cutting device can be used to adjust the on / off state of the optical path and to adjust the mode of the laser, offering rich functionality.

Description

Technical Field

[0001] This application relates to the field of laser processing, and in particular to a laser cutting device and laser processing equipment. Background Technology

[0002] In the manufacturing process of 3C products, many steps require laser processing, such as laser welding. In some specific steps, it's necessary to adjust the laser beam in the optical path, such as blocking or reflecting it. This is typically achieved using an optical shutter. However, the function of such an optical shutter is relatively limited and cannot perform other laser adjustment operations. Utility Model Content

[0003] This application proposes a beam cutting device and laser processing equipment, which can be used to adjust the on / off state of the optical path and to perform mode adjustment of the laser, and has a wide range of functions.

[0004] This application proposes a light-cutting device, comprising:

[0005] The cavity is equipped with an inlet light hole and an outlet light hole, and an optical path is formed between the inlet light hole and the outlet light hole;

[0006] The swing arm is rotatably mounted in the cavity and has at least three phases;

[0007] A driving element is used to drive the swing arm to rotate and switch between three phases;

[0008] Optical lenses are mounted on the swing arm;

[0009] An extinction device is mounted on the swing arm and located on one side of the optical lens;

[0010] In the first phase, the optical lens is located in the optical path to change the mode of the laser.

[0011] In the second phase, the extinction device is located in the optical path to block the laser from passing through;

[0012] In the third phase, the swing arm, optical lens, and extinction device avoid the optical path.

[0013] In some embodiments, one end of the swing arm is disposed on the rotating shaft of the drive member, and the other end is provided with a mounting hole, in which the optical lens is disposed.

[0014] In some embodiments, the light-cutting device further includes a connector disposed on the swing arm and located on one side of the mounting hole, and the light-extinguishing device is located on the connector.

[0015] In some embodiments, the extinction device is tapered; when the swing arm is in the second phase, the tip of the extinction device is oriented opposite to the incident direction of the laser.

[0016] In some embodiments, the cavity includes a box with an opening and a cover plate at the opening of the box. The box has an internal chamber for mounting a swing arm. The drive member is disposed on the box, and the drive end of the drive member passes through the box and is connected to the swing arm.

[0017] In some embodiments, the light-cutting device further includes a heat sink disposed on the side of the connector away from the extinction element, and a cooling channel disposed on the housing.

[0018] In some embodiments, the cutting device further includes a sealing ring disposed on the outer periphery of the opening, the sealing ring being held by the cover plate and the box body.

[0019] In some embodiments, the light-cutting device further includes two limiting members disposed on the inner wall of the box, the limiting members being disposed on both sides of the swing arm to limit the swing angle of the swing arm.

[0020] In some embodiments, when one of the limiting members abuts against the swing arm, the swing arm is in the second phase; when the other limiting member abuts against the swing arm, the swing arm is in the third phase.

[0021] This application also proposes a laser processing device, which includes the above-mentioned cutting device, and the laser processing device further includes a machine base for mounting the cutting device.

[0022] The beam cutting device and laser processing equipment of this application include a cavity, a swing arm, optical lenses, and an extinction device. The cavity has an inlet and an outlet, forming an optical path between them. The swing arm is rotatably mounted in the cavity and has at least three phases. The optical lenses and the extinction device are respectively mounted on the swing arm. A driving component drives the swing arm to rotate and switch between the three phases. In the first phase, the optical lenses are located in the optical path to change the mode of the laser. In the second phase, the extinction device is located in the optical path to block the laser from passing through. In the third phase, the swing arm, optical lenses, and extinction device allow the laser to pass through while avoiding the optical path. Therefore, this beam cutting device can be used to adjust the on / off state of the optical path and to adjust the mode of the laser, offering rich functionality. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the light-cutting device in one embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the light-cutting device in another embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the structure of the light-cutting device in another embodiment of this application.

[0026] Label Explanation:

[0027] 10. Cavity; 11. Box; 12. Cover plate; 13. Light inlet; 14. Light outlet; 16. Limiting component; 20. Swing arm; 21. Optical lens; 22. Extinction device; 23. Connecting component; 30. Driving component.

[0028] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0031] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0032] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0033] This application proposes a light-cutting device, referring to... Figures 1 to 3The beam-cutting device includes: a cavity 10 with an inlet 13 and an outlet 14, forming an optical path between the inlet 13 and the outlet 14; a swing arm 20 rotatably disposed within the cavity 10, having at least three phases; a drive member 30 for driving the swing arm 20 to rotate and switch between the three phases; an optical lens 21 disposed on the swing arm 20; and an extinction device 22 disposed on the swing arm 20 and located to one side of the optical lens 21. In the first phase, the optical lens 21 is located in the optical path to change the mode of the laser; in the second phase, the extinction device 22 is located in the optical path to block the laser from passing through; and in the third phase, the swing arm 20, the optical lens 21, and the extinction device 22 avoid the optical path. The beam-cutting device in this embodiment can be used to adjust the on / off state of the optical path and to adjust the mode of the laser, offering rich functionality.

[0034] In some embodiments, one end of the swing arm 20 is disposed on the rotating shaft of the drive member 30, and the other end is provided with a mounting hole, in which the optical lens 21 is disposed. In this embodiment, one end of the swing arm 20 is disposed on the rotating shaft of the drive member 30, and the other end is provided with a mounting hole, in which the optical lens 21 is tightly embedded. Specifically, one end of the swing arm 20 is provided with a connection hole that precisely aligns with the rotating shaft, and the side of the swing arm 20 is also provided with a notch extending to the connection hole. The two side walls opposite to the notch are connected by screws, and the rotating shaft is firmly clamped by tightening the screws, ensuring a stable connection between the swing arm 20 and the rotating shaft of the drive member 30. In the first phase, the laser enters through the light inlet 13, passes through the optical lens 21, and exits through the connection hole, completing the adjustment of the laser mode. This installation structure design ensures, on the one hand, that the swing arm 20 has no relative displacement with the rotating shaft during rotation by using screw clamping, thus ensuring the stability of the optical lens 21 and guaranteeing the accuracy of laser mode adjustment; on the other hand, the modular installation method facilitates the replacement of the optical lens 21, allowing for quick replacement of suitable lenses according to different laser mode adjustment requirements, thereby improving the flexibility and versatility of the device.

[0035] Furthermore, the transformation between different optical modes is accomplished by the input laser and the optical lens 21 within the device working together. This includes, but is not limited to: laser linear / circular polarization switching, proportional laser energy attenuation, adjustment of the polarization angle of the linearly polarized laser, and laser optical path switching. The following are some basic optical configurations for different laser mode conversions. Laser linear / circular polarization switching: When the incident laser is linearly polarized, the module contains a quarter-wave plate; when both are at a specific angle, the output laser can be circularly polarized. When the incident laser is circularly polarized, the module contains a polarizer; the output laser is linearly polarized. When the incident laser is linearly polarized, the module contains a half-wave plate, and the polarization angle is α; the output laser is polarized by a 2α-angle deflection. When the module contains a 0D lens, the output laser can be attenuated at a fixed magnification.

[0036] This embodiment achieves precise control of various modes, such as laser polarization state and energy, through flexible combination of different optical lenses 21. In laser processing, the laser polarization state can be adjusted according to material properties and processing requirements to optimize processing effects, such as improving cutting efficiency and welding quality. Through energy attenuation, excessive damage to precision components by high-energy lasers can be avoided, improving processing accuracy and product quality, effectively meeting the diverse laser processing needs in industrial production.

[0037] In some embodiments, the beam cutting device further includes a connector 23 disposed on the swing arm 20 and located on one side of the mounting hole, with an extinction device 22 located on the connector 23. In this embodiment, the connector 23 is V-shaped, with two forks at one end disposed around the mounting hole, and the other end used to mount the extinction device 22. Further, the extinction device 22 is conical; when the swing arm 20 is in the second phase, the tip of the extinction device 22 faces opposite to the incident direction of the laser. Its core working principle is to achieve efficient attenuation and scattering of laser energy through a combination of geometric design and optical absorption characteristics, thereby avoiding interference, damage, or safety hazards caused by direct transmission or reflection of the laser beam. When the laser beam is incident on the tip of the conical extinction device 22, due to the gradually increasing cross-sectional area of ​​the cone, the laser will undergo multiple reflections on the conical surface. Each reflection causes some laser energy to be absorbed by the material of the extinction device 22, while the other part is diffusely scattered in all directions. The extinction element 22 is typically made of high-absorption materials, such as black anodized metal, ceramics, or composite materials. Its surface may have a rough texture or coating to enhance diffuse reflection and energy absorption. For example, black oxide films have high absorption rates for visible and near-infrared lasers, converting laser energy into heat and preventing reflected light from interfering with the optical system. The conical extinction element 22 disperses reflected light into a non-original path direction through diffuse scattering, preventing reflected light from returning along the incident path. This is particularly important for high-power laser systems such as industrial cutting machines and lidar.

[0038] In this embodiment, the V-shaped connector 23, with its unique mechanical structure, provides stable mounting support for the extinction device 22, ensuring its fixed position during optical path blocking and preventing vibration and other factors from affecting the extinction effect. The combination of the conical extinction device 22 with specific materials and surface treatments, based on geometric design and optical absorption characteristics, achieves efficient attenuation and scattering of laser energy. In high-power laser scenarios, it effectively avoids interference, damage, or safety hazards caused by direct transmission or reflection of the laser beam, such as preventing reflected light from damaging the laser source and optical components, and protecting operators from laser radiation harm, significantly improving the safety and reliability of the beam cutting device in complex laser environments.

[0039] In some embodiments, the cavity 10 includes a box 11 with an opening and a cover plate 12 disposed at the opening of the box 11. The box 11 has an internal chamber for mounting the swing arm 20. A drive member 30 is disposed on the box 11, and the drive end of the drive member 30 passes through the box 11 and is connected to the swing arm 20. The drive member 30 may be a stepper motor, and the drive end may be a motor shaft. The shaft passes through the box 11 and a seal is disposed between it and the box 11 to form a rotational seal. Of course, in order to facilitate the installation of the swing arm 20, an opening needs to be provided on the box 11, and the cover plate 12 is used to seal the opening. In order to enhance the sealing performance of the cover plate 12, a sealing gasket may also be provided at the opening. This mounting structure design of the cavity 10 and the drive component 30 effectively prevents external dust, moisture, and other impurities from entering the cavity 10 through seals and gaskets, avoiding contamination of optical components such as the optical lens 21 and the extinction device 22, which would affect the optical path performance and extinction effect. On the other hand, the stable mounting method of the drive component 30 ensures that the swing arm 20 rotates accurately and reliably, enabling the swing arm 20 to accurately switch to each phase under the control of the drive component 30. This ensures the stable operation of the optical path switching and laser mode adjustment functions of the beam cutting device, extends the service life of the device, and reduces maintenance costs.

[0040] Furthermore, the laser cutting device also includes a heat sink located on the side of the connector 23 away from the extinction element 22, and cooling channels on the housing 11. Since the extinction element 22 absorbs most of the laser light, its temperature will increase, creating a higher ambient temperature inside the cavity 10. The heat sink can be heat dissipation fins, and the cooling channels are located inside the cavity 10. By supplying coolant into the cooling channels, the ambient temperature is reduced, preventing overheating and extending the device's lifespan.

[0041] In some embodiments, the beam-cutting device further includes two limiting members 16 disposed on the inner wall of the housing 11. The limiting members 16 are respectively disposed on both sides of the swing arm 20 to limit the swing angle of the swing arm 20. When one limiting member 16 abuts against the swing arm 20, the swing arm 20 is in the second phase; when the other limiting member 24 abuts against the swing arm 20, the swing arm 20 is in the third phase. The aforementioned limiting member 16 may be a screw disposed on the inner wall of the housing 11. By setting the limiting member 16, mechanical limiting can be achieved to ensure that the swing arm 20 can be in the set phase. The setting of the mechanical limiting structure provides a reliable physical boundary for the phase switching of the swing arm 20, ensuring that the swing arm 20 can be accurately and stably in the set phase under the control of the drive member 30, and avoiding the optical lens 21 or the extinction device 22 from deviating from the predetermined optical path position due to excessive swing of the swing arm 20, which would affect the optical path switching and laser mode adjustment functions. Compared to relying solely on the drive component 30 for control, this limiting structure enhances the fault tolerance and stability of the device. Even when the drive component 30 exhibits slight control errors, it can still ensure that the swing arm 20 is in the correct working phase, thereby improving the overall reliability and working accuracy of the light cutting device.

[0042] This application also proposes a laser processing device, which includes the aforementioned cutting device. The laser processing device further includes a machine base for mounting the cutting device. In this embodiment, the cutting device is mounted on the machine base. Of course, the laser processing device may also include a laser processing head adapted to the cutting device, which can perform laser engraving, laser welding, or laser cutting on the workpiece below. Integrating the cutting device into the laser processing device achieves a deep fusion of optical path control and laser processing. During laser processing, the cutting device can adjust the laser optical path on / off and laser mode in real time according to the processing requirements. For example, during laser welding, adjusting the laser polarization state and energy improves welding strength and weld quality; during laser cutting, rapidly switching the optical path on / off achieves precise cutting path control. This integrated design significantly improves the intelligence and automation level of the laser processing equipment, expands its processing capabilities and application range, and brings higher efficiency and better economic benefits to industrial production.

[0043] In this embodiment, the working principle of the beam cutting device and laser processing equipment is as follows: The beam cutting device and laser processing equipment in this application include a cavity 10, a swing arm 20, an optical lens 21, and an extinction device 22. The cavity 10 is provided with an inlet hole 13 and an outlet hole 14, and an optical path is formed between the inlet hole 13 and the outlet hole 14. The swing arm 20 is rotatably disposed in the cavity 10 and has at least three phases. The optical lens 21 and the extinction device 22 are respectively disposed on the swing arm 20. The driving member 30 is used to drive the swing arm 20 to rotate and switch between the three phases. In the first phase, the optical lens 21 is located in the optical path and is used to change the mode of the laser. In the second phase, the extinction device 22 is located in the optical path and is used to block the laser from passing through. In the third phase, the swing arm 20, the optical lens 21, and the extinction device 22 allow the laser to pass through while avoiding the optical path. Therefore, this beam cutting device can be used to adjust the on / off state of the optical path and to adjust the mode of the laser, with rich functions.

[0044] The above are only some or preferred embodiments of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A light-cutting device, characterized in that, include: The cavity is provided with a light inlet and a light outlet, and an optical path is formed between the light inlet and the light outlet. The swing arm is rotatably mounted in the cavity and has at least three phases; A driving element is used to drive the swing arm to rotate and switch between three phases; Optical lenses are mounted on the swing arm; An extinction device is mounted on the swing arm and located on one side of the optical lens; In the first phase, the optical lens is located in the optical path to change the mode of the laser. In the second phase, the extinction device is located in the optical path to block the laser from passing through; In the third phase, the swing arm, optical lens, and extinction device avoid the optical path.

2. The light-cutting device according to claim 1, characterized in that, One end of the swing arm is located on the rotating shaft of the drive component, and the other end is provided with a mounting hole, in which the optical lens is located.

3. The light-cutting device according to claim 2, characterized in that, The light-cutting device also includes a connector disposed on the swing arm and located on one side of the mounting hole, and the light-extinguishing device is located on the connector.

4. The light-cutting device according to claim 3, characterized in that, The extinction device is conical in shape; when the swing arm is in the second phase, the tip of the extinction device is oriented opposite to the incident direction of the laser.

5. The light-cutting apparatus according to claim 4, characterized in that, The cavity includes a box with an opening and a cover plate at the opening of the box. The box has an internal chamber for mounting the swing arm. The drive unit is mounted on the box, and the drive end of the drive unit passes through the box and is connected to the swing arm.

6. The cutting device according to claim 5, characterized in that, The light-cutting device also includes a heat sink located on the side of the connector away from the extinction element, and a cooling channel located on the housing.

7. The cutting device according to claim 5, characterized in that, The light-cutting device also includes a sealing ring disposed on the outer periphery of the opening, the sealing ring being held by the cover plate and the box body.

8. The cutting device according to claim 7, characterized in that, The light-cutting device also includes two limiting members disposed on the inner wall of the box, which are respectively disposed on both sides of the swing arm to limit the swing angle of the swing arm.

9. The light-cutting apparatus according to claim 8, characterized in that, When one of the limiting members abuts against the swing arm, the swing arm is in the second phase; when the other limiting member abuts against the swing arm, the swing arm is in the third phase.

10. A laser processing device, characterized in that, The laser processing equipment includes the cutting device according to any one of claims 1 to 9, and further includes a machine base for mounting the cutting device.

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