Optical path of a double-swing handheld laser welding head

Abstract

The present invention relates to the field of laser welding technology, specifically to a double-swing handheld laser welding head optical path, including a laser welding gun, a welding system is fixedly arranged inside the laser welding gun, the welding system includes a focusing mechanism and a lens fixing bracket and a second galvanometer mechanism, a first galvanometer mechanism and a collimator, the second galvanometer mechanism includes a second galvanometer and a second rotating motor, the first galvanometer mechanism includes a first galvanometer and a first galvanometer motor, and a collimator is arranged in the middle of the first galvanometer and the second galvanometer. The present invention is provided with two galvanometers on the welding system, and the direction of the light is changed to a certain extent, so as to achieve the purpose of changing different shapes, and projecting any shape, with five lenses of a collimator and a focusing lens, to reduce loss, save cost, and improve efficiency, and the damper can play a certain supporting and fixing role on the galvanometer, prevent the galvanometer from shaking, and improve the stability of the galvanometer.

Description

Technical Field

[0001] The invention relates to a laser welding head optical path, in particular to a double-swing handheld laser welding head optical path, and belongs to the technical field of laser welding. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts. The optical path of the double-swing handheld laser welding head is designed to achieve more flexible and complex welding control to meet the welding needs with higher precision requirements and more demanding processing conditions.

[0003] Currently, the double-swing handheld laser welding guns on the market have 6 or 7 lenses, but the effect is the same as that of 5 oscillators. Moreover, as the number of lenses increases, the loss will also increase. Once a lens is broken, the entire device will become unusable, so it cannot meet the needs of users.

[0004] Therefore, it is urgent to improve the double-swing handheld laser welding head to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a double-swing handheld laser welding head optical path. Two galvanometers are arranged on the welding system, and the direction of the light is changed to a certain extent, so as to achieve the purpose of changing different shapes and projecting arbitrary shapes. In combination with five lenses including a collimating lens and a focusing lens, the loss is reduced, the cost is saved, and the efficiency is improved. The damper can play a certain supporting and fixing role on the galvanometer, prevent the galvanometer from shaking, and improve the stability of the galvanometer.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A double-swing handheld laser welding head optical path, comprising a laser welding gun, wherein a welding system is fixedly arranged inside the laser welding gun, wherein the welding system comprises a focusing mechanism and a lens fixing bracket, and a second galvanometer mechanism, a first galvanometer mechanism and a collimating mirror fixed on the lens fixing bracket, wherein the lens fixing bracket is fixedly arranged inside the laser welding gun;

[0008] The second galvanometer mechanism includes a second galvanometer and a second rotating motor arranged at one end of the second galvanometer, the second rotating motor is used to rotate the second galvanometer, a plurality of evenly distributed second dampers are fixedly arranged on the upper side of the second galvanometer, and the second dampers are fixedly arranged on the lens fixing bracket;

[0009] The first galvanometer mechanism includes a first galvanometer and a first galvanometer motor disposed on one side of the first galvanometer, the first galvanometer motor is used to rotate the first galvanometer, a first damper is fixedly disposed on the upper side of the first galvanometer, and the first damper is fixedly disposed inside the laser welding gun;

[0010] A collimator mirror is fixedly arranged in the middle of the first galvanometer mirror and the second galvanometer mirror, and the collimator mirror is fixedly arranged on the lens fixing bracket;

[0011] A focusing cylinder is fixedly arranged inside the laser welding gun. The focusing cylinder and the collimating lens are on the same axis. The focusing cylinder is connected to an optical fiber via a wiring terminal.

[0012] Preferably, a first galvanometer rotating shaft is fixedly disposed at the other end of the first galvanometer, the first galvanometer rotating shaft is rotatably connected to a first transmission shaft fixing block, and the first transmission shaft fixing block is fixedly disposed inside the laser welding gun;

[0013] The lens fixing bracket includes a first galvanometer fixing frame and a second galvanometer fixing frame. The upper end of the first galvanometer fixing frame is connected to a first motor fixing block. The first galvanometer motor is fixedly arranged on the first motor fixing block.

[0014] Preferably, a damper fixing block is fixedly arranged on the second galvanometer fixing frame, and the second damper is fixedly arranged on the second galvanometer fixing frame;

[0015] A second galvanometer rotating shaft is fixedly arranged on the other side of the second galvanometer, and the second galvanometer rotating shaft is rotatably arranged on the second galvanometer fixing frame;

[0016] A collimator mirror fixing frame is fixedly arranged on both the first galvanometer mirror fixing frame and the second galvanometer mirror fixing frame, and the collimator mirror is fixedly arranged on the collimator mirror fixing frame.

[0017] Preferably, the focusing mechanism comprises a focusing drive mechanism and a first lens and a second lens arranged on the focusing drive mechanism, the focusing drive mechanism comprises a lens driving motor and a transmission screw arranged on the lens driving motor, the upper and lower ends of the first lens are fixedly provided with a first lens fixing block, and the transmission screw is rotatably connected to the first lens fixing block through a bearing;

[0018] Second lens fixing blocks are fixedly arranged at both upper and lower ends of the second lens, and the transmission screw is screwed and connected to the second lens fixing block via threads.

[0019] Preferably, a guide rod is fixedly provided on the first lens fixing block at the lower end, and the guide rod is slidably connected to the second lens fixing block at the lower end;

[0020] One end of the guide rod away from the first lens is connected to a guide rod fixing block, and the guide rod fixing block and the lens driving motor are both fixedly arranged inside the laser welding gun.

[0021] Preferably, a dust removal air intake valve is fixedly provided at the bottom of the laser welding gun, the dust removal air intake valve is communicated with the interior of the laser welding gun, the dust removal air intake valve comprises an air intake valve top cover and an air intake valve base which are screwed together, and the air intake valve base is screwed together with the laser welding gun through a thread;

[0022] The intake valve top cover is connected to the interior of the laser welding gun through an intake hole, an activated carbon layer is arranged inside the intake valve top cover, and a sponge layer is arranged inside the intake valve base;

[0023] The bottom of the air intake valve base is connected with an air intake valve handle, and the air intake valve handle is arranged outside the laser welding gun.

[0024] Preferably, a heat dissipation chamber is provided at the upper end of the laser welding gun, the heat dissipation chamber is connected to the inside of the laser welding gun through an exhaust hole, and the heat dissipation chamber is connected to the outside of the laser welding gun through an exhaust hole;

[0025] A heat dissipation mechanism is fixedly arranged inside the heat dissipation bin.

[0026] Preferably, the heat dissipation mechanism comprises a heat dissipation bracket, a plurality of heat dissipation motors are arranged on the heat dissipation mechanism, and a heat dissipation impeller is arranged on the heat dissipation motor.

[0027] Preferably, semiconductor cooling sheets are fixedly arranged on both sides of the laser welding gun, and the semiconductor cooling sheets correspond to the focusing mechanism;

[0028] A welding gun head is fixedly arranged at one end of the laser welding gun, and the welding gun head corresponds to the focusing mechanism.

[0029] Preferably, a battery is fixedly provided at the upper end of the laser welding gun, the battery is provided directly above the focusing mechanism, and the welding system, the focusing mechanism and the semiconductor cooling sheet are all electrically connected to the battery through wires;

[0030] A fine-tuning switch is fixedly provided on one side of the laser welding gun above the focusing cylinder, and the fine-tuning switch is electrically connected to the welding system;

[0031] An infrared calibrator electrically connected to the battery is fixedly arranged on the upper side of the laser welding gun at one side of the battery.

[0032] The present invention has at least the following beneficial effects:

[0033] 1. Two galvanometers are set on the welding system, and the direction of the light is changed to a certain extent to achieve the purpose of changing different shapes. The arbitrary shape of the projection is matched with five lenses, including a collimator and a focusing lens, to reduce losses, save costs and improve efficiency. The damper can support and fix the galvanometer to a certain extent, prevent the galvanometer from shaking, and improve the stability of the galvanometer.

[0034] 2. While the transmission screw is rotating, the second lens is driven to translate to achieve the purpose of adjusting the distance between the second lens and the second lens. A guide rod is slidably arranged at the bottom of the second lens to prevent the second lens from shaking during movement and improve the stability of the second lens. The guide rod fixing block and the lens driving motor are fixedly arranged inside the laser welding gun to improve the stability of the guide rod fixing block and the guide rod.

[0035] 3. An activated carbon layer is fixed inside the top cover of the air intake valve, and a sponge layer is fixed inside the base of the air intake valve. Therefore, the air entering the laser welding gun can be filtered to prevent dust in the air from contaminating the components inside the laser welding gun. The hot air inside the laser welding gun is drawn into the heat dissipation bin through the exhaust hole through the heat dissipation impeller and then discharged to the outside of the laser welding gun through the exhaust hole, so as to achieve the purpose of heat dissipation of the laser welding gun through airflow and improve the service life of the internal components of the laser welding gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0037] Figure 1 It is a structural diagram of the welding system of the present invention;

[0038] Figure 2 The cross-sectional view of the present invention Figure 1 ;

[0039] Figure 3 is the optical path diagram of the present invention;

[0040] Figure 4 A perspective view of the present invention;

[0041] Figure 5 It is a structural diagram of the first galvanometer mechanism of the present invention;

[0042] Figure 6is a structural diagram of the focusing mechanism of the present invention;

[0043] Figure 7 A cross-sectional view of a dust removal air inlet valve according to the present invention;

[0044] Figure 8 It is a structural diagram of the heat dissipation mechanism of the present invention;

[0045] Fig. 9 The cross-sectional view of the present invention Figure 2 .

[0046] In the figure, 1, laser welding gun; 101, heat sink; 102, exhaust hole; 103, exhaust hole; 200, welding system; 2, lens fixing bracket; 201, first galvanometer fixing bracket; 202, second galvanometer fixing bracket; 203, damper fixing block; 204, first motor fixing block; 205, first transmission shaft fixing block; 206, collimator fixing bracket; 3, second galvanometer mechanism; 301, second galvanometer; 302, second rotating motor; 303, second galvanometer shaft; 304, second damper; 4, first galvanometer mechanism; 401, first galvanometer; 402, first galvanometer motor; 403, first galvanometer shaft; 404, first damper; 5, collimator; 6, focusing mechanism; 601, Focusing drive mechanism; 602, first lens; 603, second lens; 604, lens drive motor; 605, second lens fixing block; 606, first lens fixing block; 607, transmission screw; 608, guide rod; 609, guide rod fixing block; 7, heat dissipation mechanism; 701, heat dissipation bracket; 702, heat dissipation motor; 703, heat dissipation impeller; 8, dust removal inlet valve; 801, inlet valve top cover; 802, inlet valve base; 803, inlet valve handle; 804, inlet hole; 805, activated carbon layer; 806, sponge layer; 9, focusing tube; 10, battery; 11, infrared calibrator; 12, welding gun head; 15, fine-tuning switch; 16, semiconductor refrigeration plate; 17, wiring terminal. DETAILED DESCRIPTION

[0047] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0048] like Figure 1-Figure 9As shown, the optical path of the double-swing handheld laser welding head provided in this embodiment includes a laser welding gun 1, a welding system 200 is fixedly arranged inside the laser welding gun 1, and the welding system 200 includes a focusing mechanism 6 and a lens fixing bracket 2, and a second galvanometer mechanism 3, a first galvanometer mechanism 4 and a collimating mirror 5 fixed on the lens fixing bracket 2, the lens fixing bracket 2 is fixedly arranged inside the laser welding gun 1, and two galvanometers are arranged on the welding system 200, and the projected light can be circular, eight-shaped, or any shape, which reduces loss, saves cost, and improves efficiency;

[0049] The second galvanometer mechanism 3 includes a second galvanometer 301 and a second rotating motor 302 arranged at one end of the second galvanometer 301, the second rotating motor 302 is used to rotate the second galvanometer 301, and a plurality of evenly distributed second dampers 304 are fixedly arranged on the upper side of the second galvanometer 301, and the second dampers 304 are fixedly arranged on the lens fixing bracket 2, and the second galvanometer 301 can be driven to rotate accordingly by the second rotating motor 302. In order to prevent the second galvanometer 301 from shaking and affecting the reflection effect, a plurality of second dampers 304 are fixedly arranged on the upper side of the second galvanometer 301, which can play a certain supporting and fixing role, and can also prevent the second galvanometer 301 from shaking after the second rotating motor 302 stops, thereby improving the stability of the second galvanometer 301;

[0050] The first galvanometer mechanism 4 includes a first galvanometer 401 and a first galvanometer motor 402 arranged on one side of the first galvanometer 401. The first galvanometer motor 402 is used to rotate the first galvanometer 401. A first damper 404 is fixedly arranged on the upper side of the first galvanometer 401. The first damper 404 is fixedly arranged inside the laser welding gun 1. The second galvanometer 301 can receive the light reflected by the first galvanometer 401 and change the direction of the light to a certain extent, so as to achieve the purpose of changing different shapes. At the same time, driven by the first galvanometer motor 402, the first galvanometer 401 will rotate to a certain extent, so that the direction of the light will change again. The first damper 404 also plays a certain supporting and fixing role on the first galvanometer 401, thereby improving the stability of the first galvanometer 401, so as to achieve the problem of changing the shape of light projection, thereby achieving the problem of reducing energy consumption.

[0051] A collimator 5 is fixedly arranged in the middle of the first galvanometer 401 and the second galvanometer 301. The collimator 5 is fixedly arranged on the lens fixing bracket 2. A focusing tube 9 is fixedly arranged inside the laser welding gun 1. The focusing tube 9 and the collimator 5 are on the same axis. The focusing tube 9 is connected to an optical fiber through a wiring terminal 17. After the optical fiber is fixed to the wiring terminal 17, the light of the optical fiber is reflected inside the focusing tube 9 and projected onto the collimator 5 for focusing, thereby improving the focusing effect and thus improving the processing efficiency. The collimator 5 is fixedly arranged inside the laser welding gun 1 through the lens fixing bracket 2, thereby improving the stability of the collimator 5.

[0052] In order to ensure the stability of the first galvanometer 401 during rotation, a first galvanometer shaft 403 is fixedly provided at the other end of the first galvanometer 401, and the first galvanometer shaft 403 is rotatably connected to the first transmission shaft fixing block 205, and the first transmission shaft fixing block 205 is fixedly provided inside the laser welding gun 1, and the first galvanometer shaft 403 at one end of the first galvanometer 401 is fixedly provided inside the laser welding gun 1 through the first transmission shaft fixing block 205, and the lens fixing bracket 2 includes a first galvanometer fixing frame 201 and a second galvanometer fixing frame 202, and the upper end of the first galvanometer fixing frame 201 is connected to a first motor fixing block 204, and the first galvanometer motor 402 is fixedly provided on the first motor fixing block 204, and the first galvanometer motor 402 is fixedly provided on the first galvanometer fixing frame 201 through the first motor fixing block 204, and the first galvanometer fixing frame 201 is fixedly provided inside the laser welding gun 1, so as to improve the rotation stability of the first galvanometer 401;

[0053] In order to ensure the stability of the second galvanometer 301 during rotation, a damper fixing block 203 is fixedly arranged on the second galvanometer fixing frame 202, a second damper 304 is fixedly arranged on the second galvanometer fixing frame 202, a second damper 304 on the second galvanometer 301 is fixedly arranged on the second rotating motor 302, a second galvanometer rotating shaft 303 is fixedly arranged on the other side of the second galvanometer 301, the second galvanometer rotating shaft 303 is rotatably arranged on the second galvanometer fixing frame 202, and at the same time, the second galvanometer rotating shaft 303 on the other side of the second galvanometer 301 is rotatably arranged on the second galvanometer fixing frame 202, so as to improve the rotation stability of the second galvanometer 301;

[0054] The first galvanometer fixing frame 201 and the second galvanometer fixing frame 202 are both fixedly provided with a collimator mirror fixing frame 206, and the collimator mirror 5 is fixedly provided on the collimator mirror fixing frame 206. The collimator mirror 5 is fixedly provided on the first galvanometer fixing frame 201 and the second galvanometer fixing frame 202 through the collimator mirror fixing frame 206, so as to improve the stability of the collimator mirror 5. At the same time, it does not contact with the laser welding gun 1 and can also play a role of heat insulation.

[0055] Further, such as Figure 1 and Figure 6As shown, the focusing mechanism 6 includes a focusing drive mechanism 601 and a first lens 602 and a second lens 603 arranged on the focusing drive mechanism 601. The distance between the focusing drive mechanism 601 and the first lens 602 can be adjusted accordingly to improve the scope of use and flexibility. The focusing drive mechanism 601 includes a lens driving motor 604 and a transmission screw 607 arranged on the lens driving motor 604. The upper and lower ends of the first lens 602 are fixedly provided with a first lens fixing block 606. The transmission screw 607 is rotatably connected to the first lens fixing block 606 through a bearing. In the adjustment process, specifically:

[0056] The transmission screw 607 is driven to rotate by the lens driving motor 604, and the second lens 603 is driven to translate while the transmission screw 607 rotates, so as to adjust the distance between the first lens 602 and the second lens 603. The second lens fixing blocks 605 are fixedly provided at the upper and lower ends of the second lens 603, and the transmission screw 607 is connected to the second lens fixing block 605 by screw thread engagement. The second lens fixing blocks 605 are fixedly provided at the upper and lower ends of the second lens 603 to improve the stability of the second lens 603. At the same time, the transmission screw 607 is connected to the second lens fixing block 605 by screw thread engagement to improve the second lens 603. To ensure the stability of the movement of the lens 603, a guide rod 608 is fixedly arranged on the first lens fixing block 606 at the lower end, and the guide rod 608 is slidably connected to the second lens fixing block 605 at the lower end. A guide rod 608 is slidably arranged at the bottom of the second lens 603 to prevent the second lens 603 from shaking during movement and improve the stability of the second lens 603. A guide rod fixing block 609 is connected to the end of the guide rod 608 away from the first lens 602. The guide rod fixing block 609 and the lens driving motor 604 are both fixedly arranged inside the laser welding gun 1 to improve the stability of the guide rod fixing block 609 and the guide rod 608.

[0057] Furthermore, if Figure 7 , Figure 8 as well as Fig. 9As shown, a dust removal air intake valve 8 is fixedly provided at the bottom of the laser welding gun 1, and the dust removal air intake valve 8 is connected to the interior of the laser welding gun 1. The dust removal air intake valve 8 includes an air intake valve top cover 801 and an air intake valve base 802 that are screwed together. The air intake valve base 802 is screwed together with the laser welding gun 1 by threads. During the welding process, a large amount of heat will be generated inside the laser welding gun 1. Once the temperature is too high, it will affect the quality of welding. Therefore, it is necessary to dissipate the heat inside the laser welding gun 1. The dust removal air intake valve 8 is connected to the interior of the laser welding gun 1, and the heat inside the laser welding gun 1 can be dissipated by airflow. The air intake valve top cover 801 is connected to the interior of the laser welding gun 1 through the air intake hole 804. The interior of the air intake valve top cover 801 is provided with an activated carbon layer 805, and the interior of the air intake valve base 802 is provided with a sponge layer 806. The air intake valve top cover 801 is screwed together with the air intake valve base 802 by means of threads, and an activated carbon layer 805 is fixedly arranged inside the air intake valve top cover 801, and a sponge layer 806 is fixedly arranged inside the air intake valve base 802, so that the air entering the laser welding gun 1 can be filtered to prevent dust in the air from contaminating the components inside the laser welding gun 1. The air intake valve top cover 801 and the air intake valve base 802 connected by threads are convenient to open, and the activated carbon layer 805 and the sponge layer 806 inside the dust removal air intake valve 8 can be replaced, so as to improve the convenience of use and service life. The bottom of the air intake valve base 802 is connected with an air intake valve handle 803, and the air intake valve handle 803 is arranged outside the laser welding gun 1. The dust removal air intake valve 8 is installed on the laser welding gun 1 through the air intake valve handle 803, which has a simple structure and improves the convenience of use.

[0058] During exhaust, a heat dissipation chamber 101 is provided at the upper end of the laser welding gun 1. The heat dissipation chamber 101 is connected to the inside of the laser welding gun 1 through an exhaust hole 102. The heat dissipation chamber 101 is connected to the outside of the laser welding gun 1 through an exhaust hole 103. The heat dissipation chamber 101 is connected to both the inside and the outside of the laser welding gun 1. A heat dissipation mechanism 7 is fixedly provided inside the heat dissipation chamber 101. The heat dissipation mechanism 7 includes a heat dissipation bracket 701. A plurality of heat dissipation motors 702 are provided on the heat dissipation mechanism 7. A heat dissipation impeller 703 is provided on the heat dissipation motor 702. The hot air inside the laser welding gun 1 is drawn into the heat dissipation chamber 101 through the exhaust hole 103 by the heat dissipation impeller 703 on the heat dissipation motor 702, and then discharged to the outside of the laser welding gun 1 through the exhaust hole 102, so as to achieve the purpose of heat dissipation. Therefore, the airflow can enter the inside of the laser welding gun 1 through the dust removal air inlet valve 8, and then be discharged to the outside of the laser welding gun 1 through the heat dissipation mechanism 7, so as to achieve the purpose of heat dissipation through airflow, thereby improving the service life of the components inside the laser welding gun 1.

[0059] To further dissipate heat, Figure 4As shown, semiconductor refrigeration sheets 16 are fixedly provided on both sides of the laser welding gun 1, and the semiconductor refrigeration sheets 16 correspond to the focusing mechanism 6. A welding gun head 12 is fixedly provided at one end of the laser welding gun 1, and the welding gun head 12 corresponds to the focusing mechanism 6. A semiconductor refrigeration sheet 16 is fixedly provided on the outer side of the laser welding gun 1, and the semiconductor refrigeration sheet 16 can absorb the heat inside the laser welding gun 1 and dissipate it to the outside of the laser welding gun 1, so as to achieve the purpose of cooling.

[0060] Further, if Figure 4 As shown, a battery 10 is fixedly provided at the upper end of the laser welding gun 1, and the battery 10 is arranged just above the focusing mechanism 6. The welding system 200, the focusing mechanism 6 and the semiconductor cooling sheet 16 are all electrically connected to the battery 10 through wires, and the welding system 200 is powered by the battery 10, which improves the convenience of use. A fine-tuning switch 15 is fixedly provided above the focusing tube 9 on one side of the laser welding gun 1, and the fine-tuning switch 15 is electrically connected to the welding system 200. During use, the second galvanometer mechanism 3, the first galvanometer mechanism 4 and the focusing mechanism 6 are adjusted by pressing the fine-tuning switch 15, which greatly improves the convenience of use;

[0061] In addition, an infrared calibrator 11 electrically connected to the battery 10 is fixedly installed on the upper side of the laser welding gun 1 on one side of the battery 10. The infrared calibrator 11 is fixedly installed on the laser welding gun 1, which plays a certain auxiliary role and further improves the convenience of use and processing efficiency.

[0062] like Figure 1-Figure 9 As shown, the principle of the optical path of the double-swing handheld laser welding head provided in this embodiment is as follows:

[0063] The second rotating motor 302 can drive the second galvanometer 301 to rotate accordingly. In order to prevent the second galvanometer 301 from shaking and affecting the reflection effect, a plurality of second dampers 304 are fixedly arranged on the upper side of the second galvanometer 301, which can play a certain supporting and fixing role, and can also prevent the second galvanometer 301 from shaking after the second rotating motor 302 stops, thereby improving the stability of the second galvanometer 301.

[0064] The first galvanometer mechanism 4 includes a first galvanometer 401 and a first galvanometer motor 402 arranged on one side of the first galvanometer 401. The first galvanometer motor 402 is used to rotate the first galvanometer 401. A first damper 404 is fixedly arranged on the upper side of the first galvanometer 401. The first damper 404 is fixedly arranged inside the laser welding gun 1. The first galvanometer 401 can receive the light reflected by the second galvanometer 301 and change the direction of the light to a certain extent, so as to achieve the purpose of changing different shapes. At the same time, driven by the first galvanometer motor 402, the first galvanometer 401 will rotate to a certain extent, so that the direction of the light will change again. The first damper 404 also supports and fixes the first galvanometer 401 to a certain extent, thereby improving the stability of the first galvanometer 401. Therefore, the problem of changing the projection shape of the light can be achieved, thereby achieving the problem of reducing energy consumption.

[0065] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0066] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0067] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A double-swing handheld laser welding head optical path, comprising a laser welding gun (1), characterized in that: A welding system (200) is fixedly arranged inside the laser welding gun (1), the welding system (200) comprising a focusing mechanism (6) and a lens fixing bracket (2), and a second galvanometer mechanism (3), a first galvanometer mechanism (4) and a collimator (5) fixed to the lens fixing bracket (2), the lens fixing bracket (2) being fixedly arranged inside the laser welding gun (1); The second galvanometer mechanism (3) comprises a second galvanometer (301) and a second rotating motor (302) arranged at one end of the second galvanometer (301), the second rotating motor (302) being used to rotate the second galvanometer (301), a plurality of evenly distributed second dampers (304) being fixedly arranged on the upper side surface of the second galvanometer (301), the second dampers (304) being fixedly arranged on the lens fixing bracket (2); The first galvanometer mechanism (4) comprises a first galvanometer (401) and a first galvanometer motor (402) arranged on one side of the first galvanometer (401), the first galvanometer motor (402) being used to rotate the first galvanometer (401), a first damper (404) being fixedly arranged on the upper side of the first galvanometer (401), and the first damper (404) being fixedly arranged inside the laser welding gun (1); A collimator mirror (5) is fixedly arranged in the middle of the first galvanometer mirror (401) and the second galvanometer mirror (301), and the collimator mirror (5) is fixedly arranged on the lens fixing bracket (2); A focusing cylinder (9) is fixedly arranged inside the laser welding gun (1), the focusing cylinder (9) and the collimating lens (5) are on the same axis, and the focusing cylinder (9) is connected to an optical fiber via a wiring terminal (17); A first galvanometer rotating shaft (403) is fixedly arranged at the other end of the first galvanometer (401), the first galvanometer rotating shaft (403) is rotatably connected to a first transmission shaft fixing block (205), and the first transmission shaft fixing block (205) is fixedly arranged inside the laser welding gun (1); The lens fixing bracket (2) comprises a first galvanometer fixing frame (201) and a second galvanometer fixing frame (202); the upper end of the first galvanometer fixing frame (201) is connected to a first motor fixing block (204); and the first galvanometer motor (402) is fixedly arranged on the first motor fixing block (204); A damper fixing block (203) is fixedly arranged on the second galvanometer fixing frame (202), and the second damper (304) is fixedly arranged on the second galvanometer fixing frame (202); A second galvanometer rotating shaft (303) is fixedly arranged on the other side of the second galvanometer (301), and the second galvanometer rotating shaft (303) is rotatably arranged on the second galvanometer fixing frame (202); A collimator mirror fixing frame (206) is fixedly arranged on both the first galvanometer mirror fixing frame (201) and the second galvanometer mirror fixing frame (202), and the collimator mirror (5) is fixedly arranged on the collimator mirror fixing frame (206).

2. According to claim 1, the optical path of a double-swing handheld laser welding head is characterized in that: The focusing mechanism (6) comprises a focusing drive mechanism (601) and a first lens (602) and a second lens (603) arranged on the focusing drive mechanism (601); the focusing drive mechanism (601) comprises a lens driving motor (604) and a transmission screw (607) arranged on the lens driving motor (604); first lens fixing blocks (606) are fixedly arranged at both upper and lower ends of the first lens (602); the transmission screw (607) is rotatably connected to the first lens fixing block (606) via a bearing; Second lens fixing blocks (605) are fixedly provided at both upper and lower ends of the second lens (603), and the transmission screw (607) is screwed and connected to the second lens fixing block (605) via a thread.

3. The optical path of a double-swing handheld laser welding head according to claim 2 is characterized in that: A guide rod (608) is fixedly arranged on the first lens fixing block (606) at the lower end, and the guide rod (608) is slidably connected to the second lens fixing block (605) at the lower end; One end of the guide rod (608) away from the first lens (602) is connected to a guide rod fixing block (609), and the guide rod fixing block (609) and the lens driving motor (604) are both fixedly arranged inside the laser welding gun (1).

4. The optical path of a double-swing handheld laser welding head according to claim 1 is characterized in that: A dust removal air intake valve (8) is fixedly arranged at the bottom of the laser welding gun (1), the dust removal air intake valve (8) is communicated with the interior of the laser welding gun (1), the dust removal air intake valve (8) comprises an air intake valve top cover (801) and an air intake valve base (802) which are screwed together, and the air intake valve base (802) is screwed together with the laser welding gun (1) via a thread; The air intake valve top cover (801) is connected to the interior of the laser welding gun (1) via an air intake hole (804); an activated carbon layer (805) is provided inside the air intake valve top cover (801); and a sponge layer (806) is provided inside the air intake valve base (802); The bottom of the air intake valve base (802) is connected to an air intake valve handle (803), and the air intake valve handle (803) is arranged outside the laser welding gun (1).

5. The optical path of a double-swing handheld laser welding head according to claim 1 is characterized in that: A heat dissipation chamber (101) is provided at the upper end of the laser welding gun (1); the heat dissipation chamber (101) is connected to the interior of the laser welding gun (1) via an exhaust hole (102); and the heat dissipation chamber (101) is connected to the exterior of the laser welding gun (1) via an exhaust hole (103); A heat dissipation mechanism (7) is fixedly arranged inside the heat dissipation bin (101).

6. The optical path of a double-swing handheld laser welding head according to claim 5 is characterized in that: The heat dissipation mechanism (7) comprises a heat dissipation bracket (701), a plurality of heat dissipation motors (702) are arranged on the heat dissipation mechanism (7), and a heat dissipation impeller (703) is arranged on the heat dissipation motor (702).

7. The optical path of a double-swing handheld laser welding head according to claim 1 is characterized in that: Semiconductor cooling sheets (16) are fixedly arranged on both sides of the laser welding gun (1), and the semiconductor cooling sheets (16) correspond to the focusing mechanism (6); A welding gun head (12) is fixedly provided at one end of the laser welding gun (1), and the welding gun head (12) corresponds to the focusing mechanism (6).

8. The optical path of a double-swing handheld laser welding head according to claim 7 is characterized in that: A storage battery (10) is fixedly mounted on the upper end of the laser welding gun (1); the storage battery (10) is arranged directly above the focusing mechanism (6); the welding system (200), the focusing mechanism (6) and the semiconductor cooling sheet (16) are all electrically connected to the storage battery (10) via wires; A fine-tuning switch (15) is fixedly provided on one side of the laser welding gun (1) above the focusing cylinder (9), and the fine-tuning switch (15) is electrically connected to the welding system (200); An infrared calibrator (11) electrically connected to the storage battery (10) is fixedly arranged on the upper side of the laser welding gun (1) on one side of the storage battery (10).

Images