Laser welding head and handheld laser welding device

Abstract

This application discloses a laser welding head and a handheld laser welding device, relating to the field of laser welding device technology. The laser welding head includes: a motor mounting base with a light inlet, a light outlet, a receiving cavity, and a first connecting hole, all of which communicate with the receiving cavity; a galvanometer assembly including a galvanometer motor and a reflecting mirror, the galvanometer motor being connected to the reflecting mirror, and the galvanometer motor being at least partially inserted through the first connecting hole so that the reflecting mirror is located within the receiving cavity, and the light inlet is located on the incident light path of the reflecting mirror, and the light outlet is located on the reflected light path of the reflecting mirror; a fixing component connected to the galvanometer motor and the motor mounting base; and an insulating component, with an insulating component provided between the first connecting hole and the galvanometer motor, and an insulating component provided between the fixing component and the galvanometer motor. The laser welding head of this application can reduce the influence of electromagnetic interference on the galvanometer motor.

Description

Technical Field

[0001] This utility model relates to the field of laser welding equipment technology, and more specifically, to a laser welding head and a handheld laser welding device. Background Technology

[0002] The laser welding head is the core component of a handheld laser welding device. It typically includes a laser generator, an optical path system, and a galvanometer system to control the optical path. The galvanometer system consists of a galvanometer motor and a reflecting mirror. Its function is to control the laser beam path by adjusting the position of the galvanometer motor to change the angle of the reflecting mirror, thereby ensuring that the laser beam is accurately focused on the welding target. In traditional laser welding heads, the galvanometer motor is susceptible to electromagnetic interference during operation. This interference can cause irregular oscillations in the galvanometer motor, affecting the positioning accuracy of the reflecting mirror and ultimately causing the laser beam to deviate from the target position, thus impacting the welding quality. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a laser welding head that can reduce the impact of electromagnetic interference on the galvanometer motor.

[0004] This application also provides a handheld laser welding device.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, this application provides a laser welding head, comprising: a motor mounting base having a light inlet, a light outlet, a receiving cavity, and a first connecting hole, wherein the light inlet, the light outlet, and the first connecting hole are all connected to the receiving cavity; a galvanometer assembly including a galvanometer motor and a reflecting mirror, wherein the galvanometer motor is connected to the reflecting mirror, and the galvanometer motor is at least partially disposed through the first connecting hole so that the reflecting mirror is located within the receiving cavity, and the light inlet is located on the incident light path of the reflecting mirror, and the light outlet is located on the reflected light path of the reflecting mirror; a fixing assembly connected to the galvanometer motor and the motor mounting base; and an insulating assembly disposed between the first connecting hole and the galvanometer motor, and between the fixing assembly and the galvanometer motor.

[0007] In an optional embodiment, the galvanometer motor has a motor body and a connecting part. The two ends of the motor body are respectively connected to the connecting part and the reflecting mirror. The motor body is at least partially inserted into the first connecting hole. The connecting part is exposed outside the motor mounting base and is connected to the motor mounting base through the fixing component.

[0008] In an optional embodiment, the motor mounting base is further provided with a first fixing groove, which is opened at one end of the first connecting hole near the connecting part and communicates with the first connecting hole. The insulating component includes a first insulating member, which is disposed in the first fixing groove and between the connecting part and the motor mounting base.

[0009] In an optional embodiment, the insulating assembly further includes a second insulating member, which is sleeved on the motor body and disposed between the outer surface of the motor body and the wall of the first connecting hole.

[0010] In an optional embodiment, the insulating assembly further includes a third insulating member disposed between the fixing assembly and the connecting portion.

[0011] In an optional embodiment, the fixing component includes a fixing member, the connecting portion is connected to the motor mounting base through the fixing member, and the third insulating member is disposed between the fixing member and the connecting portion.

[0012] In an optional embodiment, the fixing component further includes an elastic locking member. The motor mounting base is also provided with a second connecting hole and a third connecting hole. The second connecting hole and the third connecting hole communicate with each other, and the third connecting hole is located at the end of the second connecting hole away from the connecting portion. The fixing member passes through both the second connecting hole and the third connecting hole and is threadedly connected to the third connecting hole. The elastic locking member is sleeved on the fixing member and located in the second connecting hole. Both ends of the elastic locking member abut against the hole wall of the second connecting hole and the connecting portion, respectively.

[0013] In an optional embodiment, the fastener has a fixing part and a screwing part. The screwing part is connected to one end of the fixing part along the axial direction of the fixing part and protrudes from the fixing part radially. The connecting part is provided with a fourth connecting hole. The fixing part passes through the fourth connecting hole. The third insulating member is sleeved on the fixing part and located between the connecting part and the screwing part.

[0014] The diameter of the fourth connecting hole is larger than the diameter of the fixing part.

[0015] In an optional embodiment, there are multiple fixing components, which are arranged circumferentially around the galvanometer motor, and each fixing component is provided with an insulating component between itself and the galvanometer motor.

[0016] Secondly, this application provides a handheld laser welding device, comprising: a laser welding head as described in any of the foregoing embodiments.

[0017] The laser welding head of this application has the following advantages:

[0018] In the laser welding head of this application, the galvanometer motor is at least partially disposed through the first connecting hole, so that the reflector is located within the receiving cavity, and the light inlet is located on the incident light path of the reflector, while the light outlet is located on the reflected light path of the reflector. Thus, when the laser beam enters the receiving cavity through the light inlet, it is reflected to the light outlet and emitted into the nozzle of the laser welding head, thereby achieving laser welding of the workpiece. Since the fixing component is connected to the galvanometer motor and the motor mounting base, the fixing component enables a fixed connection between the galvanometer motor and the motor mounting base. An insulating component is provided between the first connecting hole and the galvanometer motor, and an insulating component is provided between the fixing component and the galvanometer motor. In this way, the insulating components can insulate the galvanometer motor from the motor mounting base, and also from the galvanometer motor to the fixing component. The insulation can prevent current from flowing in unnecessary places, thereby reducing the electromagnetic field generated by the current flow and reducing electromagnetic interference. This reduces the electromagnetic interference of the motor mounting base and the fixing component to the galvanometer motor, thereby reducing the erratic movement of the galvanometer motor, improving the positioning accuracy of the reflecting mirror, and improving the welding quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural schematic diagram of the laser welding head in this application is shown;

[0021] Figure 2 A schematic cross-sectional view of the laser welding head in this application is shown. Figure 1 ;

[0022] Figure 3 It shows Figure 2 Enlarged structural diagram at point A;

[0023] Figure 4 A schematic cross-sectional view of the laser welding head in this application is shown. Figure 2 ;

[0024] Figure 5 It shows Figure 4 Enlarged structural diagram at point B;

[0025] Figure 6 A three-dimensional structural diagram of the galvanometer assembly and the fixing assembly in this application is shown.

[0026] Explanation of key component symbols:

[0027] 100 - Motor mounting base; 110 - Light inlet; 120 - Light outlet; 130 - Receiving cavity; 140 - First connecting hole; 150 - First fixing groove; 160 - Second connecting hole; 170 - Third connecting hole;

[0028] 200 - Galvanometer assembly; 210 - Galvanometer motor; 211 - Motor body; 212 - Connecting part; 2121 - Fourth connecting hole; 2122 - Second fixing slot; 220 - Reflecting lens;

[0029] 300 - Fixing component; 310 - Fixing element; 311 - Fixing part; 312 - Tightening part; 320 - Elastic locking element; 301 - First fixing component; 302 - Second fixing component; 303 - Third fixing component; 304 - Fourth fixing component;

[0030] 410 - First insulating component; 420 - Second insulating component; 430 - Third insulating component. Detailed Implementation

[0031] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0032] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] Reference Figure 1 , Figure 2 as well as Figure 4 As shown, the laser welding head involved in the embodiments of this application includes: a motor mounting base 100, a galvanometer assembly 200, a fixing assembly 300, and an insulating assembly.

[0037] Specifically, the motor mounting base 100 is provided with a light inlet 110, a light outlet 120, a receiving cavity 130, and a first connecting hole 140. The light inlet 110, the light outlet 120, and the first connecting hole 140 are all connected to the receiving cavity 130. The galvanometer assembly 200 includes a galvanometer motor 210 and a reflecting mirror 220. The galvanometer motor 210 is connected to the reflecting mirror 220. The galvanometer motor 210 is at least partially inserted through the first connecting hole 140 so that the reflecting mirror 220 is located inside the receiving cavity 130, and the light inlet 110 is located on the incident light path of the reflecting mirror 220, and the light outlet 120 is located on the reflected light path of the reflecting mirror 220. The fixing assembly 300 is connected to the galvanometer motor 210 and the motor mounting base 100. An insulating component is provided between the first connecting hole 140 and the galvanometer motor 210, and an insulating component is provided between the fixing assembly 300 and the galvanometer motor 210.

[0038] In the laser welding head of this application, the galvanometer motor 210 is at least partially disposed through the first connecting hole 140, such that the reflector 220 is located within the receiving cavity 130, and the light inlet 110 is located on the incident light path of the reflector 220, while the light outlet 120 is located on the reflected light path of the reflector 220. Thus, when the laser beam enters the receiving cavity 130 through the light inlet 110, the laser beam is reflected to the light outlet 120 and emitted into the nozzle of the laser welding head, thereby achieving laser welding of the workpiece. Since the fixing component 300 is connected to the galvanometer motor 210 and the motor mounting base 100, the fixing component 300 can be used to connect the galvanometer motor 210 to the motor mounting base 100. The fixed connection is achieved by providing an insulating component between the first connecting hole 140 and the galvanometer motor 210, and between the fixing component 300 and the galvanometer motor 210. This insulating component provides insulation between the galvanometer motor 210 and the motor mounting base 100, and also between the galvanometer motor 210 and the fixing component 300. This insulation prevents current from flowing in unwanted places, thereby reducing the electromagnetic field generated by current flow and reducing electromagnetic interference. As a result, the electromagnetic interference from the motor mounting base 100 and the fixing component 300 to the galvanometer motor 210 is reduced, thus reducing the random movement of the galvanometer motor 210, improving the positioning accuracy of the reflecting mirror 220, and improving the welding quality.

[0039] Reference Figure 3 As shown, the galvanometer motor 210 has a motor body 211 and a connecting part 212. The two ends of the motor body 211 are respectively connected to the connecting part 212 and the reflecting mirror 220. The motor body 211 is at least partially inserted into the first connecting hole 140. The connecting part 212 is exposed outside the motor mounting base 100 and is connected to the motor mounting base 100 through the fixing component 300.

[0040] In this embodiment, the motor body 211 is used to connect with the reflector 220 to drive the reflector 220, so that the laser beam can hit the workpiece to be welded according to a preset trajectory during the welding process. The connecting part 212 is used to connect the motor body 211 with the motor mounting base 100, and the fixing component 300 realizes the fixed connection between the connecting part 212 and the motor mounting base 100, so as to realize the fixed connection between the motor body 211 and the motor mounting base 100.

[0041] Continue to refer to Figure 3As shown, the motor mounting base 100 is also provided with a first mounting groove 150. The first mounting groove 150 is opened at one end of the first connecting hole 140 near the connecting part 212 and communicates with the first connecting hole 140. The insulating component includes a first insulating member 410, which is disposed in the first mounting groove 150 and between the connecting part 212 and the motor mounting base 100.

[0042] In this embodiment, since the first fixing groove 150 is opened at one end of the first connecting hole 140 near the connecting portion 212, and the first insulating member 410 is disposed in the first fixing groove 150 and between the connecting portion 212 and the motor mounting base 100, the first insulating member 410 can insulate the ends of the connecting portion 212 and the motor mounting base 100 near the first connecting hole 140, thereby reducing the electromagnetic interference of the motor mounting base 100 to the galvanometer motor 210. At the same time, the first insulating member 410 can also play a vibration isolation role between the motor mounting base 100 and the galvanometer motor 210, reducing the resonance phenomenon between the motor mounting base 100 and the galvanometer motor 210, thereby reducing the impact on the positioning accuracy of the reflector 220 during the welding process. Furthermore, the first fixing groove 150 can improve the structural stability of the first insulating member 410, ensuring that the first insulating member 410 can be stably located between the connecting portion 212 and the motor mounting base 100.

[0043] Specifically, in this embodiment, the first insulating element 410 is a first sealing ring, which is sleeved on the connecting part 212 to insulate and seal the end of the motor mounting base 100 near the first connecting hole 140, thereby improving the protection of the reflective lens 220 in the receiving cavity 130 and preventing the reflective lens 220 from being contaminated and damaged.

[0044] Continue to refer to Figure 3 As shown, the insulation assembly also includes a second insulating member 420, which is sleeved on the motor body 211 and disposed between the outer surface of the motor body 211 and the wall of the first connecting hole 140.

[0045] In this embodiment, since the second insulating member 420 is sleeved on the motor body 211 and disposed between the outer surface of the motor body 211 and the hole wall of the first connecting hole 140, the first insulating member 410 can insulate the connection part 212 from the hole wall of the first connecting hole 140, thereby further improving the insulation effect between the galvanometer motor 210 and the motor mounting base 100, reducing the electromagnetic interference of the motor mounting base 100 to the galvanometer motor 210. At the same time, the second insulating member 420 can also play a vibration isolation role between the motor mounting base 100 and the galvanometer motor 210, reducing the resonance phenomenon between the motor mounting base 100 and the galvanometer motor 210, thereby reducing the impact on the positioning accuracy of the reflector 220 during the welding process.

[0046] Specifically, in this embodiment, the second insulating element 420 is a second sealing ring, which is sleeved on the connecting part 212 to insulate and seal between the connecting part 212 and the first connecting hole 140, thereby further improving the protection of the reflective lens 220 in the receiving cavity 130 and preventing the reflective lens 220 from being contaminated and damaged.

[0047] Specifically, refer to Figure 3 As shown, in this embodiment, a second fixing groove 2122 is provided on the surface of the connecting part 212, and a second sealing ring is disposed in the second fixing groove 2122 to fix the second sealing ring, improve the structural stability of the second sealing ring, and ensure that the second sealing ring can be stably located between the connecting part 212 and the first connecting hole 140.

[0048] Reference Figure 5 As shown, the insulation assembly also includes a third insulating member 430, which is disposed between the fixing assembly 300 and the connecting portion 212.

[0049] In this embodiment, since the third insulating member 430 is disposed between the fixing component 300 and the connecting part 212, the connecting part 212 and the fixing component 300 can be insulated by the third insulating member 430, thereby improving the insulation effect between the galvanometer motor 210 and the fixing component 300, reducing the electromagnetic interference of the fixing component 300 to the galvanometer motor 210. At the same time, the third insulating member 430 can also play a vibration isolation role between the fixing component 300 and the galvanometer motor 210, reducing the resonance phenomenon between the fixing component 300 and the galvanometer motor 210, thereby reducing the impact on the positioning accuracy of the reflector 220 during the welding process.

[0050] Reference Figure 6 As shown, the fixing component 300 includes a fixing member 310, the connecting part 212 is connected to the motor fixing base 100 through the fixing member 310, and the third insulating member 430 is disposed between the fixing member 310 and the connecting part 212.

[0051] In this embodiment, the connecting part 212 can be fixed to the motor mounting base 100 by the fixing member 310, thereby fixing the galvanometer motor 210 to the motor mounting base 100. At the same time, since the third insulating member 430 is disposed between the fixing member 310 and the connecting part 212, the connecting part 212 and the fixing member 310 can be insulated by the third insulating member 430.

[0052] Reference Figure 5 as well as Figure 6 As shown, the fixing component 300 also includes an elastic locking member 320. The motor mounting base 100 is also provided with a second connecting hole 160 and a third connecting hole 170. The second connecting hole 160 and the third connecting hole 170 are connected, and the third connecting hole 170 is located at the end of the second connecting hole 160 away from the connecting part 212. The fixing member 310 passes through both the second connecting hole 160 and the third connecting hole 170 and is threadedly connected to the third connecting hole 170. The elastic locking member 320 is sleeved on the fixing member 310 and is located inside the second connecting hole 160. The two ends of the elastic locking member 320 abut against the hole wall of the second connecting hole 160 and the connecting part 212, respectively.

[0053] In this embodiment, the fixing member 310 can be simultaneously inserted into both the second connecting hole 160 and the third connecting hole 170, and threadedly connected to the third connecting hole 170, thereby achieving a fixed connection between the fixing member 310 and the motor mounting base 100. Simultaneously, since the elastic locking member 320 is sleeved on the fixing member 310 and located within the second connecting hole 160, and both ends of the elastic locking member 320 abut against the hole wall of the second connecting hole 160 and the connecting portion 212 respectively, when the fixing member 310 and... When the third connecting hole 170 is threaded, the hole wall of the second connecting hole 160 and the connecting part 212 will both compress the elastic locking member 320, so that the elastic locking member 320 has elastic potential energy to drive the fixing member 310 to move away from the third connecting hole 170. Thus, the elastic locking member 320 provides pre-tightening force to the fixing member 310, improves the stability of the threaded connection between the fixing member 310 and the third connecting hole 170, and prevents the fixing member 310 from loosening during long-term use.

[0054] Specifically, in this embodiment, the fixing member 310 is a bolt, the elastic locking member 320 is a spring, the bolt is threadedly connected to the wall of the third connecting hole 170, the spring is sleeved on the fixing member 310, and the two ends of the spring abut against the wall of the second connecting hole 160 and the connecting part 212, respectively. When the bolt is screwed into the third connecting hole 170, the spring is compressed so that the spring has elastic potential energy to drive the bolt to move away from the third connecting hole 170, thereby providing preload force to the bolt through the spring and improving the stability of the threaded connection between the bolt and the wall of the third connecting hole 170.

[0055] Reference Figure 5 As shown, the fastener 310 has a fixing part 311 and a screwing part 312. The screwing part 312 is connected to one end of the fixing part 311 along the axial direction of the fixing part 311 and protrudes from the fixing part 311 radially. The connecting part 212 is provided with a fourth connecting hole 2121. The fixing part 311 passes through the fourth connecting hole 2121. The third insulating member 430 is sleeved on the fixing part 311 and is located between the connecting part 212 and the screwing part 312. The diameter of the fourth connecting hole 2121 is larger than the diameter of the fixing part 311.

[0056] Specifically, in this embodiment, the fixing part 311 is simultaneously inserted into the second connecting hole 160, the third connecting hole 170 and the fourth connecting hole 2121, and is threadedly connected to the third connecting hole 170 to fix the connecting part 212 onto the motor mounting base 100.

[0057] In this embodiment, when the fixing part 311 is threadedly connected to the third connecting hole 170, the fixing part 311 can be installed and removed by screwing the screwing part 312. Since the screwing part 312 protrudes radially from the fixing part 311, when the fixing part 311 passes through the fourth connecting hole 2121, the screwing part 312 can abut against the connecting part 212, thereby limiting the fixing part 311 and facilitating accurate installation of the fixing part 311. Furthermore, since the third insulating member 430 is sleeved on the fixing part 311 and located at... Between the connecting part 212 and the screwing part 312, the third insulating member 430 can insulate the connecting part 212 and the screwing part 312 from direct contact, thereby preventing the screwing part 312 from directly contacting the connecting part 212 and thus providing insulation between the fixing member 310 and the galvanometer motor 210. Furthermore, since the diameter of the fourth connecting hole 2121 is larger than the diameter of the fixing part 311, the possibility of contact between the fixing part 311 and the connecting part 212 can be reduced, further improving the insulation performance between the fixing member 310 and the galvanometer motor 210.

[0058] Specifically, in this embodiment, the third insulating member 430 is an insulating washer, which is sleeved on the fixing part 311 and located between the connecting part 212 and the screwing part 312 to insulate the connecting part 212 and the screwing part 312.

[0059] Reference Figure 1 As shown, there are multiple fixing components 300, which are arranged circumferentially around the galvanometer motor 210. Each fixing component 300 is provided with an insulating component between itself and the galvanometer motor 210.

[0060] In this embodiment, since multiple fixing components 300 are arranged circumferentially around the galvanometer motor 210, the connection stability between the galvanometer motor 210 and the motor mounting base 100 can be improved by using multiple fixing components 300. Furthermore, since each fixing component 300 is provided with an insulating component between itself and the galvanometer motor 210, the insulating component can be used to insulate the galvanometer motor 210 from each fixing component 300.

[0061] Specifically, refer to Figure 1 As shown, in this embodiment, the fixing component 300 includes a first fixing component 301, a second fixing component 302, a third fixing component 303, and a fourth fixing component 304. The first fixing component 301, the second fixing component 302, the third fixing component 303, and the fourth fixing component 304 are arranged at equal distances around the galvanometer motor 210 in the circumferential direction. The first fixing component 301 is located at the upper left corner of the galvanometer motor 210, the second fixing component 302 is located at the upper right corner of the galvanometer motor 210, the third fixing component 303 is located at the lower right corner of the galvanometer motor 210, and the fourth fixing component 304 is located at the lower left corner of the galvanometer motor 210.

[0062] During the installation of the galvanometer assembly 200, the galvanometer motor 210 is pre-fixed using the first fixing component 301, the second fixing component 302, the third fixing component 303, and the fourth fixing component 304, and then a laser beam is introduced into the laser welding head. If the laser beam at the exit port 120 is below the central axis of the exit port 120, the fixing members 310 of the first fixing component 301 and the second fixing component 302 are slightly loosened, while the fixing members 310 of the third fixing component 303 and the fourth fixing component 304 are slowly tightened, so that the galvanometer motor 210 is secured by the third fixing component 303 and the fourth fixing component 304. Under the elastic force of the elastic locking member 320 of the fourth fixing component 304, it tends to swing towards the central axis above the light output port 120. At the same time, the galvanometer motor 210 can swing towards the central axis above the light output port 120 through the first insulating member 410 as a fulcrum, thereby driving the reflecting mirror 220 to swing towards the central axis above the light output port 120. This causes the laser beam at the light output port 120 to swing towards the central axis above the light output port 120. Finally, the fixing members 310 of the first fixing component 301 and the second fixing component 302 are slowly locked to ensure that the laser beam at the light output port 120 is aligned with the central axis of the light output port 120. The central axes of the exit port 120 are aligned, improving the positioning accuracy of the laser beam during the welding process. If the laser beam at the exit port 120 is above the central axis of the exit port 120, the fixing members 310 of the third fixing component 303 and the fourth fixing component 304 are slightly loosened, while the fixing members 310 of the first fixing component 301 and the second fixing component 302 are slowly tightened. This allows the galvanometer motor 210 to tend to swing below the central axis of the exit port 120 under the elastic force of the elastic locking members 320 of the first fixing component 301 and the second fixing component 302. The laser beam at the output port 120 can swing downwards towards the central axis of the output port 120 by using the first insulating member 410 as a fulcrum, thereby causing the reflector 220 to swing downwards towards the central axis of the output port 120. This causes the laser beam at the output port 120 to swing downwards towards the central axis of the output port 120. Finally, by slowly locking the fixing members 310 of the third fixing component 303 and the fourth fixing component 304, the laser beam at the output port 120 is made to coincide with the central axis of the output port 120, thereby improving the positioning accuracy of the laser beam during the welding process. In this way, the debugging convenience of the laser welding head of this application can be improved.

[0063] The handheld laser welding device involved in the embodiments of this application includes: the laser welding head described above.

[0064] In the handheld laser welding device of this application, since the laser welding head can reduce the influence of electromagnetic interference on the galvanometer motor 210, the positioning accuracy of the reflector 220 during the welding process can be improved, thereby improving the welding quality of the handheld laser welding device of this application.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A laser welding head, characterized in that, include: The motor mounting base is provided with a light inlet, a light outlet, a receiving cavity, and a first connecting hole, wherein the light inlet, the light outlet, and the first connecting hole are all connected to the receiving cavity; A galvanometer assembly includes a galvanometer motor and a reflector. The galvanometer motor is connected to the reflector and at least partially passes through the first connection hole, so that the reflector is located in the receiving cavity, and the light inlet is located in the incident light path of the reflector and the light outlet is located in the reflected light path of the reflector. A fixing component is connected to the galvanometer motor and the motor mounting base; An insulating component is provided between the first connecting hole and the galvanometer motor, and between the fixing component and the galvanometer motor.

2. The laser welding head according to claim 1, characterized in that, The galvanometer motor has a motor body and a connecting part. The two ends of the motor body are respectively connected to the connecting part and the reflecting mirror. The motor body is at least partially inserted into the first connecting hole. The connecting part is exposed outside the motor mounting base and is connected to the motor mounting base through the fixing component.

3. The laser welding head according to claim 2, characterized in that, The motor mounting base is further provided with a first fixing groove, which is opened at one end of the first connecting hole near the connecting part and communicates with the first connecting hole. The insulating component includes a first insulating member, which is disposed in the first fixing groove and between the connecting part and the motor mounting base.

4. The laser welding head according to claim 2, characterized in that, The insulation component further includes a second insulating element, which is sleeved on the motor body and disposed between the outer surface of the motor body and the wall of the first connecting hole.

5. The laser welding head according to claim 2, characterized in that, The insulating assembly further includes a third insulating element disposed between the fixing assembly and the connecting portion.

6. The laser welding head according to claim 5, characterized in that, The fixing component includes a fixing member, the connecting part is connected to the motor mounting base through the fixing member, and the third insulating member is disposed between the fixing member and the connecting part.

7. The laser welding head according to claim 6, characterized in that, The fixing component further includes an elastic locking member. The motor mounting base is also provided with a second connecting hole and a third connecting hole. The second connecting hole and the third connecting hole communicate with each other, and the third connecting hole is located at the end of the second connecting hole away from the connecting part. The fixing member passes through both the second connecting hole and the third connecting hole and is threadedly connected to the third connecting hole. The elastic locking member is sleeved on the fixing member and located in the second connecting hole. Both ends of the elastic locking member abut against the hole wall of the second connecting hole and the connecting part, respectively.

8. The laser welding head according to claim 6, characterized in that, The fastener has a fixing part and a screwing part. The screwing part is connected to one end of the fixing part along the axial direction of the fixing part and protrudes from the fixing part radially. The connecting part is provided with a fourth connecting hole. The fixing part passes through the fourth connecting hole. The third insulating member is sleeved on the fixing part and is located between the connecting part and the screwing part. The diameter of the fourth connecting hole is larger than the diameter of the fixing part.

9. The laser welding head according to claim 1, characterized in that, There are multiple fixing components, which are arranged circumferentially around the galvanometer motor, and each fixing component is provided with an insulating component between itself and the galvanometer motor.

10. A handheld laser welding device, characterized in that, include: The laser welding head as described in any one of claims 1-9.

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