Laser external optical shutter control device and laser processing equipment

Abstract

The utility model provides a laser external optical shutter control device and laser processing equipment, the laser external optical shutter control device comprises a shutter box, one side of the shutter box is provided with a light inlet, the other side of the shutter box is provided with a light outlet, the shutter box is further provided with a first installation position and a second installation position, and the first installation position is used for installing a power meter; the first light absorption part is arranged at the second mounting position; the light guide assembly comprises a first reflecting mirror and a second reflecting mirror, the first reflecting mirror and the second reflecting mirror are located between the light inlet and the light outlet, and the first reflecting mirror can rotate to avoid the propagation path of the incident laser or rotate to reflect the laser to the first light absorption part; the second reflecting mirror can rotate to avoid the propagation path of the incident laser or rotate to reflect the laser to the power meter; and the light spot test frame is used for installing a light spot test piece, and the light spot test frame is arranged in the brake box and located between the second reflector and the second installation position. According to the laser external optical shutter control device provided by the embodiment of the invention, control, power measurement and light spot size analysis of original light can be facilitated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of laser processing, and more particularly to a laser external light shutter control device and a laser processing equipment. BACKGROUND

[0002] The laser external light shutter control device is usually applied externally to a laser to control the transmission direction and switching state of original light output by the laser. However, in actual use, power measurement and spot size analysis monitoring of the original light are also required, and therefore other monitors also need to be used together, and the control operation is not convenient enough. CONTENT OF THE INVENTION

[0003] The application provides a laser external light shutter control device which can conveniently control, measure power and analyze spot size of original light.

[0004] The technical scheme adopted by the application is as follows: a laser external light shutter control device is provided, which comprises:

[0005] A shutter box is provided with an entrance on one side and an exit opposite to the entrance on the other side, and the shutter box is also provided with a first mounting position and a second mounting position, and the first mounting position is used for mounting a power meter.

[0006] A first light absorbing member is arranged in the second mounting position.

[0007] A light guide assembly comprises a first mirror and a second mirror, and the first mirror and the second mirror are arranged in the shutter box and located between the entrance and the exit, the first mirror is rotatably arranged in the shutter box and can rotate relative to the shutter box to have a first position and a second position, the first mirror can reflect laser to the first light absorbing member when the first mirror is located at the first position, and the first mirror can avoid the propagation path of incident laser when the first mirror is located at the second position; the second mirror is rotatably arranged in the shutter box and can rotate relative to the shutter box to have a third position and a fourth position, the second mirror can reflect laser to the power meter when the second mirror is located at the third position, and the second mirror can avoid the propagation path of incident laser when the second mirror is located at the fourth position.

[0008] A spot test frame is arranged in the shutter box and located between the second mirror and the second mounting position, and is used for mounting a spot test member.

[0009] Further, the light guide assembly further comprises a first driver and a second driver.

[0010] The first driver is arranged outside the shutter box, and the rotating shaft of the first driver is inserted into the shutter box and connected with the first mirror.

[0011] The second driver is arranged outside the shutter box, and a rotating shaft of the second driver is inserted into the shutter box and connected with the second mirror.

[0012] Further, the rotating shaft line of the first driver and the rotating shaft line of the second driver are perpendicular to each other, and the end faces where the first mounting position and the second mounting position are located are perpendicular to each other.

[0013] Further, the laser external light shutter control device further comprises a second light absorbing member, the light guide assembly further comprises a third mirror, the shutter box is further provided with a third mounting position, the third mirror is rotatably arranged in the shutter box and located between the third mirror and the light spot testing frame, the third mounting position corresponds to the position of the third mirror, the second light absorbing member is arranged in the third mounting position, the third mirror can rotate relative to the shutter box to have a fifth position and a sixth position, when the third mirror is located at the fifth position, the laser reflected by the second mirror can be reflected to the second light absorbing member, and when the third mirror is located at the sixth position, the laser reflected by the second mirror can be avoided from the propagation path.

[0014] Further, the light guide assembly further comprises a third driver, the third driver is arranged outside the shutter box, and a rotating shaft of the third driver is inserted into the shutter box and connected with the third mirror.

[0015] Further, the first light absorbing member comprises a cylinder and a cooling plate, one end of the cylinder is communicated with the second mounting position, the cooling plate closes the other end of the cylinder, a fluid passage is arranged in the cooling plate, and pipeline interfaces are formed on the cooling plate at both ends of the fluid passage.

[0016] Further, the light spot testing frame comprises a handle, a connecting block and at least two support rods, one end of each of the support rods is connected to one side of the connecting block, each of the support rods is parallel to each other, the handle is arranged on the side of the connecting block away from the support rods, and the shutter box is provided with through holes for the support rods.

[0017] Further, a maintenance opening is arranged on the outer wall of the shutter box corresponding to the position of the light spot testing frame, and the shutter box further comprises a cover plate detachably closing the maintenance opening.

[0018] Further, the laser external light shutter control device further comprises a first light guide cylinder and a second light guide cylinder, one end of the first light guide cylinder is connected with the light inlet, and the other end is used for connecting a laser; and one end of the second light guide cylinder is connected with the light outlet, and the other end is used for connecting an optical system.

[0019] The embodiment of the present application further provides a laser processing device, comprising a laser, an optical system and the laser external shutter control device.

[0020] The laser external shutter control device provided by the embodiment of the present application has the following advantages:

[0021] 1. In the laser external shutter control device of the embodiment of the present application, when the laser needs to pass through the device normally, the first mirror and the second mirror are rotated to the second position and the fourth position respectively to avoid the propagation path of the incident laser, and the laser can propagate along the straight light path from the light inlet on one side of the shutter box to the light outlet on the other side. If the laser light path needs to be cut off, the first mirror is rotated to the first position to reflect the incident laser to the first light absorption member at the second mounting position, so that the laser cannot normally reach the light outlet from the light inlet, thereby effectively controlling the on-off of the laser light path.

[0022] 2. When the power of the laser needs to be detected, the second mirror is rotated to the third position (at this time, the first mirror is in the second position to avoid the propagation path of the laser), and the reflected laser is shot to the power meter at the first mounting position, thereby measuring the power.

[0023] 3. When the spot characteristic detection is performed, the spot test member is installed on the spot test frame in advance, and then the second mirror is rotated to the third position (at this time, the first mirror is in the second position to avoid the propagation path of the laser), and the reflected laser is shot to the first mounting position. At this time, the spot test member installed on the test frame will block the laser and perform corresponding measurement on the spot.

[0024] 4. Whether the on-off switching of the laser light path, the monitoring of the laser power, or the test of the spot characteristics and the processing of the excess laser energy, etc. are performed, only the first mirror and the second mirror in the shutter box need to be rotated to the corresponding positions, so that the laser can be easily guided along different propagation paths, and the switching and activation of various functions can be achieved. The whole operation process is clear and simple. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The three-dimensional structure schematic diagram of the laser external shutter control device provided by the embodiment of the present application is shown in the figure.

[0027] Figure 2 A side view of the laser external shutter control device provided by the embodiment of the present application;

[0028] Figure 3 A schematic view of the first reflector reflecting the laser to the first light absorption member provided by the embodiment of the present application;

[0029] Figure 4 A schematic view of the second reflector reflecting the laser to the power meter provided by the embodiment of the present application;

[0030] Figure 5 A structural schematic view of the light spot test frame provided by the embodiment of the present application;

[0031] Figure 6 A structural schematic view of the first light absorption member provided by the embodiment of the present application.

[0032] In the drawings, various reference numerals refer to:

[0033] 10, shutter box; 11, light inlet; 12, light outlet; 13, first mounting position; 14, second mounting position; 15, third mounting position; 16, maintenance opening; 17, cover plate; 18, first support;

[0034] 20, first light absorption member; 21, cylinder; 22, cooling plate; 221, fluid passage; 222, pipeline interface;

[0035] 30, light guide assembly; 31, first reflector; 32, second reflector; 33, first driver; 34, second driver; 35, third reflector; 36, third driver;

[0036] 40, light spot test frame; 41, handle; 42, connecting block; 43, support rod; 50, power meter; 60, second light absorption member; 70, first light guide cylinder; 80, second light guide cylinder. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

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

[0039] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0040] In addition, the terms "first", "second" are only used for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0041] Please refer to Figure 1 , the laser external shutter control device provided by the embodiment of the present application will be described.

[0042] Referring to Figure 1 and Figure 2 , the laser external shutter control device provided by the embodiment of the present application is a comprehensive device for performing various control and detection operations on the laser light path. The laser external shutter control device comprises a shutter box 10, a first light absorbing member 20, a light guide assembly 30 and a light spot test frame 40.

[0043] The shutter box 10 is the shell structure of the whole device, which serves to accommodate and carry other components, and provides corresponding space and channels for laser propagation. It can be a rectangular cuboid-shaped metal box, and the material is selected to be aluminum alloy. This material is solid and has good heat dissipation performance, which can ensure stable operation of the device.

[0044] Referring to Figure 1 and Figure 2 , the shutter box 10 is provided with a light inlet 11 on one side and a light outlet 12 opposite to the light inlet 11 on the other side. The shutter box 10 is also provided with a first mounting position 13 and a second mounting position 14, and the first mounting position 13 is used to mount a power meter 50.

[0045] The light inlet 11 is an entrance channel for the laser to enter the inside of the shutter box 10. The laser beam emitted from the laser will first enter the laser external shutter control device through the light inlet 11. The shape of the light inlet 11 is usually circular, which facilitates the accurate shooting of the laser. The light outlet 12 corresponds to the light inlet 11 and is an exit channel for the laser to be normally emitted after a series of control and detection operations in the device. The laser will be emitted from the light outlet 12 and continue to propagate to the subsequent optical system. The shape of the light outlet 12 is also mostly circular, and the size is basically the same as that of the light inlet 11, so as to ensure that the laser can smoothly pass through the entire device.

[0046] Referring to Figure 1 The first installation site 13 is used to install the power meter 50, which can accurately measure the laser power passing through it. For example, in a laser processing device, in order to ensure that the output power of the laser meets the processing requirements, the power meter 50 installed at the first installation site 13 is needed to monitor in real time. In some embodiments, the first installation site 13 is an opening provided on the shutter box 10, and the power meter 50 is installed at the opening and located outside the shutter box 10, so that the size of the shutter box can be smaller. In some embodiments, the first installation site 13 is located inside the shutter box, and the power meter 50 is installed inside the shutter box 10.

[0047] The second installation site 14 is used to install the first light absorbing member 20. In some embodiments, the second installation site 14 is an opening provided on the shutter box 10, and the first light absorbing member 20 is installed at the opening and located outside the shutter box 10, so that the size of the shutter box can be smaller. In some embodiments, the second installation site 14 is located inside the shutter box, and the first light absorbing member 20 is installed inside the shutter box 10.

[0048] The first light absorbing member 20 is provided at the second installation site 14. The first light absorbing member 20 is mainly used to absorb laser to prevent the laser energy from continuing to propagate and causing potential harm and the like. The first light absorbing member 20 is installed at the second installation site 14 of the shutter box 10, and is fixed in position and tightly matched with the second installation site 14. When the laser is guided to this position according to the light path set in the device, the laser energy can be effectively absorbed, thereby ensuring the safety of the entire device and the surrounding environment.

[0049] Referring to Figure 3The light guide assembly 30 comprises a first mirror 31 and a second mirror 32, which are both arranged in the shutter box 10 and between the light inlet 11 and the light outlet 12. The first mirror 31 is rotatably arranged in the shutter box 10 and has a first position and a second position relative to the shutter box 10. When the first mirror 31 is in the first position, it reflects the laser light to the first light absorbing member 20. When the first mirror 31 is in the second position, it avoids the propagation path of the incident laser light. The second mirror 32 is rotatably arranged in the shutter box 10 and has a third position and a fourth position relative to the shutter box 10. When the second mirror 32 is in the third position, it reflects the laser light to the power meter 50. When the second mirror 32 is in the fourth position, it avoids the propagation path of the incident laser light.

[0050] With reference to Figure 3 The first mirror 31 is arranged inside the shutter box 10 and at a position between the light inlet 11 and the light outlet 12. The first mirror 31 can achieve different light path guiding effects by being rotated to the first position or the second position. For example, in normal laser transmission, it can be rotated to the second position to avoid the propagation path of the incident laser light, so that the laser light can propagate straight to the light outlet 12 without obstruction, ensuring that the laser light path is in the "on" state. In some cases where the laser light path needs to be cut off, it can be rotated to the first position to reflect the incident laser light to the first light absorbing member 20 arranged at the second mounting position 14, so that the laser light is absorbed, thereby achieving the effect of cutting off the laser light propagation, similar to a "switch".

[0051] With reference to Figure 4 Similarly, the second mirror 32 is also arranged in the shutter box 10 between the light inlet 11 and the light outlet 12. The second mirror 32 can also change the propagation path of the laser light by being rotated to the third position or the fourth position according to actual needs. For example, when the laser power needs to be detected, it can be rotated to the third position to reflect the incident laser light to the power meter 50 arranged at the first mounting position 13, facilitating the power meter 50 to measure the laser power. When the laser power does not need to be detected in normal laser transmission, it can be rotated to the fourth position to avoid the propagation path of the laser light, ensuring that the laser light propagates smoothly to the light outlet 12.

[0052] The light spot test frame 40 is used to install the light spot test piece, which is arranged in the shutter box 10 and between the second mirror 32 and the second mounting position 14. The light spot test frame 40 is a structural component for installing the light spot test piece, which is arranged in the shutter box 10 and in the area between the second mirror 32 and the second mounting position 14. For example, when performing a laser spot characteristic detection experiment, a special light spot test piece (such as thermal paper) needs to be installed on the light spot test frame 40. When the light spot does not need to be measured, the light spot test piece is removed.

[0053] Based on the above structure, the following is the working process of the laser external light shutter control device to realize each function:

[0054] When it is needed to make the laser light path in the "on" state, the first mirror 31 and the second mirror 32 in the light guide assembly 30 are rotated to the second position and the fourth position respectively, so that they are all away from the propagation path of the incident laser. In this way, the laser can pass through the internal space of the shutter box 10 along the straight line direction from the light inlet 11 of the shutter box 10, and then be emitted from the light outlet 12, realizing the normal transmission of the laser. Referring to Figure 3 , if the laser light path needs to be cut off, that is, the "off" function is realized, the first mirror 31 is operated to rotate to the first position to reflect the incident laser to the first light absorbing piece 20 located at the second mounting position 14, or the second mirror 32 is rotated to the third position to reflect the laser to other directions than the light outlet 12 (such as to the position where the power meter 50 is located, etc.). In this way, the laser cannot successfully reach the light outlet 12 from the light inlet 11 as planned, thereby realizing the control of the on-off of the laser light path.

[0055] Referring to Figure 4 When it is needed to monitor the laser power, the second mirror 32 in the light guide assembly 30 is rotated to the third position by using the rotatable feature, so that the second mirror 32 reflects the incident laser to the power meter 50 installed at the first mounting position 13 of the shutter box 10. After the laser is shot to the power meter 50, the power meter 50 detects the related parameters such as the light intensity of the laser based on the optical sensing and measuring principle built-in itself, and converts the detected physical quantity into data (such as specific power value display) that can be directly read through the corresponding conversion mechanism, thereby realizing the real-time monitoring of the laser power.

[0056] When the spot characteristic test is to be performed, first, according to the requirement of the laser propagation path, the first mirror 31 is rotated to the second position (to avoid the propagation path of the incident laser) and the second mirror 32 is rotated to the third position (to reflect the incident laser to the second mounting position 14), so that the laser propagates to the position of the spot test frame 40 located between the second mirror 32 and the second mounting position 14 in the shutter box 10. Then, the spot test piece (such as thermal paper) already installed on the spot test frame 40 is irradiated by the low-power laser original light to form a burn mark on the thermal paper, and the original light size can be measured and the original light irradiation to the power meter 50 probe position can be determined.

[0057] In some cases, such as when the laser does not need to continue to propagate or the excess laser energy needs to be processed, the first mirror 31 can be operated to rotate to the first position to reflect the incident laser to the direction of the first light absorption piece 20 located at the second mounting position 14, so that the laser is shot to the first light absorption piece 20. The first light absorption piece 20 can convert the light energy of the laser into heat energy or other forms of energy for dissipation, thereby achieving effective absorption of the laser energy and avoiding the laser energy from being scattered at will to cause potential harm or interfere with the operation of other equipment.

[0058] Referring to Figure 3 and Figure 4 , the light guide assembly 30 further comprises a first driver 33 and a second driver 34.

[0059] The first driver 33 is arranged outside the shutter box 10, and the rotating shaft of the first driver 33 is inserted into the shutter box 10 and connected with the first mirror 31.

[0060] The first driver 33 is a device capable of generating rotating power, which is arranged outside the shutter box 10. For example, it can be a servo motor or a stepping motor. The first driver 33 is stably mounted at a suitable position outside the shutter box 10, and has a rotating shaft which penetrates through the shell of the shutter box 10 and is inserted into the shutter box 10 and then connected with the first mirror 31. A special hole is reserved on the shell of the shutter box 10, and the rotating shaft is provided with a sealing and bearing structure when it penetrates through the hole, which can ensure the flexible rotation of the rotating shaft and prevent dust and other impurities from entering the shutter box 10 to affect the performance of the device. The rotating action of the first driver 33 can drive the first mirror 31 to rotate, so as to change the angular position of the first mirror 31 relative to the laser light path and achieve the adjustment of the laser propagation path.

[0061] Referring to Figure 4 , the second driver 34 is arranged outside the shutter box 10, and the rotating shaft of the second driver 34 is inserted into the shutter box 10 and connected with the second mirror 32.

[0062] The second driver 34 is also a device with rotating driving capability, and is similar to the first driver 33, and is also placed outside the shutter box 10. The second driver 34 can be a servo motor or a stepping motor. The second driver 34 is also installed at a corresponding position outside the shutter box 10, and its rotating shaft is inserted into the shutter box 10 to be connected with the second mirror 32. The shutter box 10 also has a suitable hole for the rotating shaft, and the hole is equipped with corresponding protection and rotation auxiliary structure to ensure that the rotating shaft can rotate smoothly. When the second driver 34 receives a corresponding control signal to start rotating, it can drive the second mirror 32 to rotate through the rotating shaft, so that the second mirror 32 can be rotated to a specific angle position according to the actual light path control requirement, thereby changing the propagation path of the laser, and realizing different light path guiding operations such as reflecting the laser to the power meter 50 or avoiding the laser propagation path.

[0063] With reference to Figure 3 , the rotating axis of the first driver 33 and the rotating axis of the second driver 34 are perpendicular to each other, and the end faces where the first mounting position 13 and the second mounting position 14 are located are perpendicular to each other.

[0064] The first mirror 31 can change the direction of the laser within the angle range related to the plane where the rotating axis of the first driver 33 is located, and the second mirror 32 can adjust the laser direction within the angle range related to the plane where the rotating axis of the second driver 34 is located. The two mirrors cooperate to change the propagation path of the laser in the shutter box 10, and the perpendicular rotating axes enable the two mirrors to control the laser in different plane dimensions.

[0065] The end faces where the first mounting position 13 and the second mounting position 14 are located are perpendicular to each other, and the first mounting position 13 where the power meter 50 is located cooperates with the first mirror 31 and the second mirror 32 to reflect and guide the laser in the plane dimension to realize power monitoring; and the second mounting position 14 where the first light absorbing member 20 is located can receive the laser guided by the mirror to absorb energy in another plane dimension based on the perpendicular position relationship.

[0066] In the spatial layout of the laser external shutter control device, described in three-dimensional orthogonal coordinate system (X, Y, Z axis): incident laser along the X axis into the shutter box 10. The first driver 33 rotation axis along the Y axis, its driven first mirror 31 can change the laser propagation path in the relevant plane dimension, for example, make the laser into the Z axis direction; the second driver 34 rotation axis along the Z axis, its driven second mirror 32 can change the laser path, for example, make the laser into the Y axis direction. The first light absorption piece 20 is located at the bottom of the shutter box 10, perpendicular to the Z axis, which can absorb the laser reflected by the first mirror 31; the second mounting site 14 is on the side wall perpendicular to the Y axis, and the laser can be reflected to this direction by the second mirror 32 to realize the corresponding function. The layout of each component is conducive to the realization of multiple functions of the device.

[0067] With reference to Figure 3 , the first support 18 is arranged in the shutter box 10, and the rotation axis of the first driver 33 is rotatably connected to the first support 18. The first support 18 is firmly mounted at a specific position inside the shutter box 10, which corresponds to the end point of the rotation axis of the first driver 33 inserted into the shutter box 10, so as to realize the rotation connection of the two. The end of the rotation axis of the first driver 33 inserted into the shutter box 10 is rotatably connected to the first support 18, for example, a bearing can be installed on the first support 18 corresponding to the position of the rotation axis, and the rotation axis is inserted into the inner ring of the bearing. In this way, the smoothness of the rotation of the rotation axis is ensured, and the weight of the rotation axis and the components driven by it, such as the first mirror 31, can be effectively borne, so that the first mirror 31 can be stably and accurately adjusted in angle around the rotation axis under the drive of the first driver 33, thereby changing the propagation path of the laser in the shutter box 10.

[0068] With reference to Figure 1 and Figure 3 The rotation axis of the second driver 34 is inserted into the shutter box 10 from one side of the shutter box 10 and penetrates out from the other side. At the place where the rotation axis of the second driver 34 penetrates through the two side walls of the shutter box 10, a series of measures are taken to ensure that it can smoothly penetrate and flexibly rotate. A precise hole can be reserved on the side wall of the shutter box 10, and the diameter of the hole is slightly larger than the outer diameter of the rotation axis, so that a certain rotation gap is left for the rotation axis, but it will not be too large to cause the rotation axis to sway.

[0069] Whether it is the rotation connection of the first support 18 and the rotation axis of the first driver 33, or the penetration of the rotation axis of the second driver 34 through the shutter box 10, it guarantees that the mirrors in the light guide assembly 30 can stably and accurately rotate under the drive of the driver, thereby realizing effective control of the laser light path, and cooperating with other components in the device to complete multiple functions such as laser on-off, power monitoring and spot testing.

[0070] With reference toFigure 1 and Figure 2 The laser external shutter control device further comprises a second light absorbing member 60, the light guide assembly 30 further comprises a third mirror 35, the shutter box 10 is further provided with a third mounting position 15, the third mirror 35 is rotatably arranged in the shutter box 10 and located between the third mirror 35 and the spot testing frame 40, the third mounting position 15 is located corresponding to the position of the third mirror 35, the second light absorbing member 60 is arranged in the third mounting position 15, the third mirror 35 can rotate relative to the shutter box 10 to have a fifth position and a sixth position, when the third mirror 35 is located at the fifth position, the laser reflected by the second mirror 32 can be reflected to the second light absorbing member 60, when the third mirror 32 is located at the sixth position, the propagation path of the laser reflected by the second mirror 32 can be avoided.

[0071] With reference to Figure 3 and Figure 4 The third mirror 35 is arranged inside the shutter box 10 and located between the second mirror 32 and the spot testing frame 40, and plays a role of re-directing or changing the laser light path. The third mirror 35 can be rotated to the fifth position or the sixth position, and can change the propagation path of the laser according to actual needs. When no special treatment is needed for the laser, that is, the laser continues to propagate along the predetermined route towards the spot testing frame 40, so as to perform subsequent spot characteristic testing and other operations, the third mirror 35 can be rotated to the sixth position to avoid the propagation path of the laser reflected by the second mirror 32, so that the laser can pass through unobstructed and reach the position of the spot testing frame 40 successfully. In some cases, such as cutting off the part of the laser light path to prevent the laser from continuing to propagate or to process the excess laser energy, the third mirror 35 can be rotated to the fifth position to accurately reflect the laser reflected by the second mirror 32 to the corresponding target position, that is, the second light absorbing member 60 located at the third mounting position 15, so as to change the propagation direction of the laser and realize effective control of the laser.

[0072] In some embodiments, the third mounting position 15 is an opening provided on the shutter box 10, and the second light absorbing member 60 is mounted at the opening and located outside the shutter box 10, so that the size of the shutter box can be smaller. In some embodiments, the third mounting position 15 is located inside the shutter box, and the second light absorbing member 60 is mounted inside the shutter box 10.

[0073] With reference to Figure 6The function of the second light absorption member 60 is to absorb laser energy, and the structure inside the shutter box 10 is closely matched to ensure that it can stably receive and absorb the laser reflected by the third mirror 35. The structure of the second light absorption member 60 can refer to the first light absorption member 20, and will not be described again.

[0074] The third mounting position 15 is provided on the shutter box 10, and its position corresponds to the position of the third mirror 35. For example, from the overall space of the shutter box 10, if the shutter box 10 is imagined as a cuboid box, the third mounting position 15 can be located at the bottom of the box, and is matched with the third mirror 35 in space, so that when the third mirror 35 reflects the laser, the laser can accurately pass through the third mounting position 15 and be shot at the second light absorption member 60 located here.

[0075] By adding the third mirror 35, the second light absorption member 60 and the third mounting position 15, not only the original functions such as laser path on-off control, power monitoring, spot characteristic testing can be continued to be realized, but also when needed, the third mirror 35 can be used to guide the laser again, and the second light absorption member 60 can be used to absorb the laser energy, so as to further optimize the control of the laser propagation path and energy processing, better meet the more complex needs in different laser application scenarios, and protect the safety and effectiveness of the device operation.

[0076] Referring to Figure 4 The light guide assembly 30 further comprises a third driver 36, the third driver 36 is arranged outside the shutter box 10, and the rotating shaft of the third driver 36 is inserted into the shutter box 10 and connected with the third mirror 35. The third driver 36 is installed outside the shutter box 10, the rotating shaft of the third driver 36 is inserted into the shutter box 10 and connected with the third mirror 35. The third driver 36 can be a small servo motor or a micro stepping motor, which is fixed on the outer wall of the shutter box 10 through a mounting bracket, the rotating shaft of the third driver 36 is inserted into the shutter box 10 and connected with the third mirror 35 through a shaft coupling, and the third driver 36 can drive the third mirror 35 to rotate, so as to more flexibly control the laser path.

[0077] Specifically, each driver (i.e. the first driver 33, the second driver 34 and the third driver 36) comprises a servo motor, a shaft coupling and a rotating shaft, the output shaft of the servo motor is connected with one end of the rotating shaft through the shaft coupling, and the other end of the rotating shaft is inserted into the shutter box 10 and connected with the mirror. The mirror is specifically installed on a mirror frame, and the mirror frame is connected and fixed with the rotating shaft. The mirror can be driven to rotate by the servo motor.

[0078] Referring to Figure 6The first light absorption member 20 includes a cylinder 21 and a cooling plate 22. One end of the cylinder 21 is communicated with the second mounting position 14, and the cooling plate 22 closes the other end of the cylinder 21. The cooling plate 22 is provided with a fluid passage 221, and the two ends of the fluid passage 221 form pipe interfaces 222 on the cooling plate 22 respectively.

[0079] The cylinder 21 is one of the main structures of the whole first light absorption member 20, which presents a hollow cylindrical shape. One end of the cylinder 21 is communicated with the second mounting position 14 on the shutter box 10, which ensures that the laser can smoothly enter the inside of the cylinder 21 from the inside of the shutter box 10. The communication can be sealed connection, such as sealing by welding or using a sealing rubber ring, to prevent leakage of laser during transmission and ensure that the laser energy is fully processed by the absorption structure corresponding to the cylinder 21.

[0080] The cooling plate 22 plays a role in closing the other end of the cylinder 21, so that the cylinder 21 forms a relatively closed space, which is conducive to the concentrated absorption of laser energy and subsequent heat management. The cooling plate 22 can also be made of metal materials with good heat conductivity, such as aluminum alloy materials, which not only have good heat conductivity, but also have relatively light weight, which is helpful for the overall layout and weight control of the whole device. Preferably, the surface of the cooling plate 22 is black plated to further improve the heat absorption capacity.

[0081] The cooling plate 22 is provided with a fluid passage 221, which is designed to allow the cooling liquid (such as water or special cooling oil) to flow therein, so as to remove the heat generated during the absorption of laser energy by the flow of cooling liquid, thereby maintaining the temperature of the whole light absorption member within a reasonable range and avoiding the influence of high temperature on its performance or even damaging the components. The fluid passage 221 can present a meandering shape inside the cooling plate 22, which can increase the contact area of the cooling liquid with the cooling plate 22 and improve the heat exchange efficiency. For example, the fluid passage 221 can be arranged in a shape similar to a "hui" or a spiral shape to increase the heat exchange area. The two ends of the fluid passage 221 form pipe interfaces 222 on the cooling plate 22 respectively, and the external cooling system is connected to the two pipe interfaces 222 through pipes. The cooling liquid flows into the fluid passage 221 of the cooling plate 22 from one interface, absorbs heat during the flow in the passage, and then flows out from the other interface to return to the cooling system for cooling circulation, which continuously cools and dissipates heat for the first light absorption member 20, ensuring that it can stably absorb laser energy for a long time and ensure the normal operation of the whole laser external shutter control device.

[0082] Further, the light spot testing frame 40 comprises a handle 41, a connecting block 42, and at least two support rods 43, one end of each of the support rods 43 is connected to one side of the connecting block 42, the support rods 43 are parallel to each other, the handle 41 is arranged on the side of the connecting block 42 away from the support rods 43, and the shutter box 10 is provided with through holes for the support rods 43 to pass through.

[0083] One end of the support rod 43 is connected to one side of the connecting block 42, and the connection between them is generally achieved by welding or threaded connection. The support rods 43 are arranged in parallel to each other, and the parallel support rods 43 can ensure that the light spot testing piece (such as thermal paper) hung thereon is in a relatively flat and stable plane, which is beneficial to accurately and uniformly detect the laser spot.

[0084] The connecting block 42 plays a role of connecting the support rods 43 and bearing the handle 41 in the light spot testing frame 40. It is between the support rods 43 and the handle 41, and is the "hub" part of the whole structure. The connecting block 42 is generally block-shaped, such as a cuboid shape.

[0085] The handle 41 is arranged on the side of the connecting block 42 away from the support rods 43, that is, on the other side of the light spot testing frame 40, which is convenient for the user to operate. The handle 41 is designed to facilitate the insertion and removal of the light spot testing frame 40 into or out of the shutter box 10, so that the user can hold it comfortably and exert force conveniently. For example, the handle 41 can be an arc-shaped strip structure with anti-slip lines on the surface, and the material can be plastic or rubber-coated metal, which can enable the user to smoothly insert the light spot testing frame 40 into the corresponding through hole in the shutter box 10 through the support rods 43, or pull out the support rods 43 from the through hole of the shutter box 10 by holding the handle 41 after the detection is completed, thereby achieving convenient installation and disassembly of the light spot testing frame 40.

[0086] The shutter box 10 is provided with through holes specially for the support rods 43 to pass through, and the positions, numbers and sizes of the through holes are matched with the support rods 43 of the light spot testing frame 40. The positions of the through holes are determined according to the ideal placement position of the light spot testing frame 40 in the shutter box 10, so that the light spot testing frame 40 is located in the appropriate light path position after being inserted, and the laser can accurately irradiate the light spot testing piece installed on the support rods 43 to detect the light spot characteristics.

[0087] Through such a structural design, when performing light spot testing, the light spot testing frame 40 can be inserted into the through hole of the shutter box 10 through the handle 41, the light spot testing piece is installed on the support rods 43, and then the laser is irradiated onto the light spot testing piece after being guided by the light guide assembly 30, thereby obtaining accurate light spot characteristic data to provide a strong basis for experimental research.

[0088] Referring to Figure 1 , the outer wall of the shutter box 10 is provided with a maintenance opening 16 corresponding to the position of the light spot testing frame 40, and the shutter box 10 further comprises a cover plate 17 detachably closing the maintenance opening 16.

[0089] The maintenance opening 16 corresponds to the position of the light spot testing frame 40 inside the shutter box 10, ensuring that the user can directly access the light spot testing frame 40 through the maintenance opening 16 when it is necessary to operate the light spot testing frame 40. The size of the maintenance opening 16 is determined according to the light spot testing frame 40 and the related operation to be performed. It must be large enough for the user's hand or corresponding tool to pass through smoothly and conveniently install the light spot testing piece on the light spot testing frame 40.

[0090] The main function of the cover plate 17 is to detachably close the maintenance opening 16. When it is not necessary to operate the light spot testing frame 40, it can tightly close the maintenance opening 16, playing a role in protecting the internal components of the shutter box 10 and preventing dust, impurities, etc. from entering the shutter box 10 to affect the normal operation of the device. There are various connection methods between the cover plate 17 and the shutter box 10, and the commonly used methods are screw fixation or buckle connection.

[0091] By setting such a maintenance opening 16 and providing a detachable cover plate 17, when the laser external shutter control device is actually used and it is necessary to perform light spot characteristic testing and install a light spot testing piece (such as thermal paper), the user only needs to open the cover plate 17 according to the corresponding disassembly method (such as unscrewing the screw or unfastening the buckle), and then easily install the light spot testing piece on the light spot testing frame 40 located in the shutter box 10 through the maintenance opening 16. After the operation is completed, the cover plate 17 is installed to close the maintenance opening 16, and the whole process is simple and convenient.

[0092] Referring to Figure 1 , the laser external shutter control device further comprises a first light guide cylinder 70 and a second light guide cylinder 80. One end of the first light guide cylinder 70 is connected to the light inlet 11, and the other end is used to connect a laser. One end of the second light guide cylinder 80 is connected to the light outlet 12, and the other end is used to connect an optical system.

[0093] The first light guide cylinder 70 has a hollow cylindrical structure, generally in the shape of a hollow cylinder. One end of the first light guide cylinder 70 is connected to the light inlet 11 of the laser external shutter control device, and the connection method generally uses a sealed and stable connection method to prevent laser leakage or light path deviation at the interface. For example, a high-precision threaded connection can be used in combination with a sealing ring. The other end of the first light guide cylinder 70 is used to connect the laser and adapt to the output port of the laser, ensuring that the laser can enter the first light guide cylinder 70 without any obstruction after being output from the laser, and then be transmitted to the laser external shutter control device. The main function of the first light guide cylinder 70 is to provide a stable and low-loss transmission channel for the laser, accurately guiding the laser generated by the laser to the laser external shutter control device.

[0094] The second light guide cylinder 80 has similar structure to the first light guide cylinder 70, also having a hollow cylindrical structure. Its shape is generally also in the shape of a hollow cylinder. One end of the second light guide cylinder 80 is connected to the light outlet 12 of the laser external shutter control device, and the connection method also focuses on sealing and stability, similar to the connection method of the first light guide cylinder 70 connecting the light inlet 11. Threaded connection in combination with a sealing ring can be used. The other end is used to connect the optical system. The function of the second light guide cylinder 80 is to accurately transmit the laser processed by the laser external shutter control device to the subsequent optical system according to the requirements, so that it can continue to play the corresponding function.

[0095] Through the setting of the first light guide cylinder 70 and the second light guide cylinder 80, the entire laser external shutter control device forms an organic whole with the laser and the optical system, and the laser can be efficiently and stably transmitted between each link. Each component works cooperatively to meet the diversified needs of different laser application scenarios.

[0096] In some embodiments, in the actual use of the laser external shutter control device, the three mirrors (i.e. the first mirror 31, the second mirror 32 and the third mirror 35) have a specific angle rule when reflecting the laser. Specifically, each time the laser is reflected, the direction of the laser propagation is changed by 90°. To achieve the effect of reflecting the laser by 90°, the corresponding angle between each mirror and the incident laser is 45° when reflecting the laser. For example, in a certain scenario, assuming that the initial laser propagates horizontally into the shutter box 10, when it encounters the first mirror 31, if the first mirror 31 is placed at an angle of 45° with the horizontally incident laser, after reflection by the first mirror 31, the laser will propagate vertically downward, and the direction of propagation is changed by 90°, reaching the first light absorber. By the same token, the second mirror 32 and the third mirror 35 also follow this angle rule when they are in action to reflect the laser. By adjusting the angle between themselves and the laser to 45°, the effect of changing the direction of laser propagation by 90° is achieved, thereby flexibly and accurately guiding the laser to propagate along the predetermined light path, achieving various functions required by the device, such as laser light path on-off control, guiding the laser to the power meter 50 for power monitoring, guiding the laser to the spot test frame 40 for spot characteristic test, or guiding the laser to the light absorber for energy absorption, etc.

[0097] It can be understood that the position of each mirror after rotation can be detected by a position sensor, i.e. each mirror is provided with two sensors, one of which is used to detect whether the mirror is in a position that avoids the propagation path of the laser, and the other is used to detect whether the mirror is in a position that reflects the laser to a specified direction.

[0098] The application also provides a laser processing device, which comprises a laser, an optical system and the laser external shutter control device as described above.

[0099] The laser processing device of the application has the beneficial effects of the laser external shutter control device of any of the embodiments described above, and thus will not be described here.

[0100] The above only describes the preferred embodiments of the application and should not be used to limit the application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the protection scope of the application.

Claims

1. A laser external shutter control device, characterized by, The laser external shutter control device comprises: a shutter box, one side of which is provided with a light inlet, the other side of which is provided with a light outlet opposite to the light inlet, the shutter box is further provided with a first mounting position and a second mounting position, and the first mounting position is used for mounting a power meter; a first light absorption member provided in the second mounting position; a light guide assembly comprising a first reflector and a second reflector, the first reflector and the second reflector are both provided in the shutter box and located between the light inlet and the light outlet, the first reflector is rotatably provided in the shutter box and has a first position and a second position by rotating relative to the shutter box, the first reflector is capable of reflecting laser to the first light absorption member when the first reflector is located at the first position, and the first reflector is capable of avoiding the propagation path of incident laser when the first reflector is located at the second position; the second reflector is rotatably provided in the shutter box and has a third position and a fourth position by rotating relative to the shutter box, the second reflector is capable of reflecting laser to the power meter when the second reflector is located at the third position, and the second reflector is capable of avoiding the propagation path of incident laser when the second reflector is located at the fourth position; a light spot test frame used for mounting a light spot test member, the light spot test frame is provided in the shutter box and located between the second reflector and the second mounting position.

2. The laser external shutter control device of claim 1, wherein, The light guide assembly further comprises a first driver and a second driver; the first driver is provided outside the shutter box, a rotating shaft of the first driver is inserted into the shutter box and connected with the first reflector; the second driver is provided outside the shutter box, a rotating shaft of the second driver is inserted into the shutter box and connected with the second reflector.

3. The laser external shutter control device of claim 2, wherein, the rotating shaft line of the first driver and the rotating shaft line of the second driver are perpendicular to each other, and the end faces where the first mounting position and the second mounting position are located are perpendicular to each other.

4. The laser external shutter control device of claim 1, wherein, The laser external shutter control device further comprises a second light absorption member, the light guide assembly further comprises a third reflector, the shutter box is further provided with a third mounting position, the third reflector is rotatably provided in the shutter box and located between the third reflector and the light spot test frame, the position of the third mounting position corresponds to the position of the third reflector, the second light absorption member is provided in the third mounting position, the third reflector has a fifth position and a sixth position by rotating relative to the shutter box, the third reflector is capable of reflecting laser reflected by the second reflector to the second light absorption member when the third reflector is located at the fifth position, and the third reflector is capable of avoiding the propagation path of laser reflected by the second reflector when the third reflector is located at the sixth position.

5. The laser external shutter control device of claim 4, wherein, The light guide assembly further comprises a third driver, the third driver is provided outside the shutter box, a rotating shaft of the third driver is inserted into the shutter box and connected with the third reflector.

6. The laser external shutter control device of claim 1, wherein, The first light absorption member comprises a cylinder and a cooling plate, one end of the cylinder is communicated with the second mounting position, the cooling plate closes the other end of the cylinder, a fluid passage is provided in the cooling plate, and pipe interfaces are formed on the cooling plate at both ends of the fluid passage.

7. The laser external shutter control device of claim 1, wherein, The light spot test frame comprises a handle, a connecting block and at least two support rods, one end of each of the support rods is connected to one side of the connecting block, each of the support rods is parallel to each other, the handle is arranged on the side of the connecting block away from the support rods, and the shutter box is provided with a through hole for each of the support rods.

8. The laser external shutter control device of claim 1, wherein, A maintenance opening is arranged on the outer wall of the shutter box corresponding to the position of the light spot test frame, and the shutter box further comprises a cover plate detachably closing the maintenance opening.

9. The laser external shutter control device according to any one of claims 1 to 8, wherein, The laser external light shutter control device further comprises a first light guide cylinder and a second light guide cylinder, one end of the first light guide cylinder is connected to the light inlet, and the other end is used for connecting a laser, one end of the second light guide cylinder is connected to the light outlet, and the other end is used for connecting an optical system.

10. A laser processing apparatus characterized by comprising: The laser external light shutter control device comprises a laser, an optical system and any one of the light spot test frames according to claims 1 to 9.

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