Handheld laser welding gun
By setting up an internal galvanometer drive circuit board and dual switch design in the laser welding gun, the problems of inconvenient fault maintenance and low safety in the prior art are solved, and the user experience and equipment stability are improved through display adjustment modules and protective covers.
Patent Information
- Application Number
- CN202421472016.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The galvanometer drive circuit board of the existing laser welding gun is set in the laser or control box. It needs to be disassembled and replaced in the same manner when the fault is faulty. Users cannot maintain it themselves, resulting in high after-sales cost; at the same time, the switch is set at the handle and it is easy to cause accidental touch, which is low in safety, and inconvenient to adjust the parameters.
The galvanometer drive circuit board is set inside the main body of the welding gun, and the user can replace it by himself; the dual switch design (first switch and second switch) is adopted to turn on the welding gun only when pressed simultaneously, improving safety and reliability; a display adjustment module is set on the main body of the welding gun to facilitate users to adjust parameters; and the window mirror assembly is protected through a protective cover to reduce dust entry and improve stability.
Users can replace the galvanometer drive circuit board by themselves to reduce after-sales cost; the dual-switch design improves safety and reliability; the display adjustment module simplifies the parameter adjustment process; and the protective cover improves the service life and stability of the window mirror assembly.
Smart Images
Figure CN222830920U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding devices, in particular to a handheld laser welding gun. Background Art
[0002] The laser welding gun uses high-energy laser to locally heat the material in a small area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, and the material is melted to form a specific molten pool. It is mainly used for welding small parts and thin-walled materials. It can realize spot welding, sealing welding, butt welding, lap welding, etc. The depth is higher than the width, the weld width is small, the heat-affected zone is small, the deformation is small, the welding speed is fast, the weld is flat and has no pores, no post-welding treatment or simple treatment is required, it can be accurately controlled, the focused light spot is small, the positioning accuracy is high, and automatic laser welding can be realized. When in use, the laser welding gun is connected to the laser or control box through the optical fiber tube. The laser and the optical fiber tube transmit the laser to the handheld welding gun. After the laser is transmitted along the optical path in the handheld welding gun, it is transmitted from the nozzle of the handheld welding gun to perform laser welding on the welding part to be welded.
[0003] Existing laser welding guns generally drive the reflector to swing by setting a galvanometer motor, thereby changing the width of the laser beam, making it easier for workers to align the weld for welding, and at the same time dispersing the energy density. The galvanometer drive of the existing technology is placed inside the laser or control box, because the galvanometer motor and the drive are used in conjunction with each other. When the galvanometer motor or the drive is damaged, the laser or the control box needs to be removed and replaced, which is very inconvenient. Customers cannot operate it by themselves and need to solve it with after-sales service, which has high after-sales costs. At the same time, the switch of the existing laser welding gun is set on the handle, which is easy to cause accidental touch, has a low safety factor, and is inconvenient to adjust parameters. Utility Model Content
[0004] The purpose of the utility model is to provide a handheld laser welding gun to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a handheld laser welding gun, comprising a welding gun body and a reflective galvanometer module arranged inside the welding gun body, wherein a galvanometer drive circuit board is also arranged inside the welding gun body.
[0006] Furthermore, the welding gun body includes a gun body portion and a gun handle portion which is arranged obliquely downward at one end of the gun body portion, and a first switch is arranged on a side of the gun handle portion close to the gun body portion, the galvanometer drive circuit board is arranged inside the gun handle portion, and a second switch is arranged on an end of the inner side of the gun handle portion close to the galvanometer drive circuit board, the second switch is installed on the galvanometer drive circuit board, and the welding gun is turned on by pressing the second switch and the first switch at the same time.
[0007] Furthermore, a laser emitting module is arranged inside the welding gun body, and an integrated porous tube for transmitting both light and electricity is arranged at one end of the laser emitting module.
[0008] Furthermore, the reflective galvanometer module includes a galvanometer motor fixed inside the welding gun body through a clamp and a reflector for reflecting the laser emitted by the laser emission module. The rotating shaft of the galvanometer motor is fixedly connected to the reflector for driving the reflector to swing.
[0009] Furthermore, a focusing mirror assembly for focusing the laser reflected by the reflective galvanometer module and a window mirror assembly for protecting the focusing mirror assembly are arranged inside the welding gun body, and a protective cover for shielding and sealing the window mirror assembly is opened and closed on one side of the top of the welding gun body.
[0010] Furthermore, a display adjustment module for displaying and adjusting welding gun parameters is provided on the welding gun body, and the display adjustment module includes a display screen and a micro switch for adjusting the welding gun parameters.
[0011] Furthermore, a transfer platform is provided on the outer side wall of the welding gun body.
[0012] Furthermore, the welding gun body is provided with an indicator light which displays the working status of the equipment and whether there is a fault.
[0013] Furthermore, the welding gun is provided with temperature protection.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] (1) By placing the galvanometer drive circuit board inside the welding gun body, users can replace it by themselves when a fault occurs, thus reducing after-sales costs;
[0016] (2) By setting the first switch and the second switch, the welding gun can be turned on only when they are pressed at the same time, thereby avoiding accidental touch, and having higher safety and reliability. At the same time, the second switch is set on the driving board of the galvanometer motor to reduce the size of the welding gun;
[0017] (3) By setting the display adjustment module, it is more convenient to use when the welding gun and the laser are not placed together;
[0018] (4) By providing a protective cover, dust is not easily accumulated around the window mirror assembly, and dust is prevented from entering the interior of the welding gun body when the window mirror assembly is replaced;
[0019] (5) By fixing the galvanometer motor directly on the welding gun through a clamp, the pitch cannot be adjusted, the stability is better, and installation, debugging and later correction are convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1This is a schematic diagram of the internal three-dimensional structure of the utility model;
[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of one side of the utility model;
[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the other side of the utility model;
[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamp of the utility model;
[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the integrated porous tube of the utility model;
[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the reflective galvanometer module of the utility model.
[0026] In the figure: 1. welding gun body; 101. gun body; 102. gun handle; 2. laser emission module; 3. reflective galvanometer module; 301. galvanometer motor; 302. reflector; 303. lens clamp; 4. focusing lens assembly; 5. window mirror assembly; 6. galvanometer drive circuit board; 7. second switch; 8. first switch; 9. display adjustment module; 901. display screen; 902. micro switch; 10. integrated porous tube; 11. transfer platform; 12. clamp; 121. fixing seat; 122. pressing part; 123. positioning part; 13. protective cover; 14. indicator light. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. In the description of the utility model, it should be noted that the terms "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In order to make the terms "including" and any variations of them in the specification and claims of the utility model and the above-mentioned drawings, it is intended to cover non-exclusive inclusions.
[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.
[0029] See also Figure 1-6 The utility model provides an embodiment: a handheld laser welding gun, comprising a welding gun body 1 and a laser emitting module 2, a reflection galvanometer module 3, a focusing mirror assembly 4 and a window mirror assembly 5 arranged inside the welding gun body 1. When working, the laser emitting module 2 emits laser which is reflected by the reflection galvanometer module 3, focused by the focusing mirror assembly 4 and then emitted by the window mirror assembly 5 in sequence to perform welding;
[0030] The welding gun body 1 includes a gun body 101 and a gun handle 102 which is arranged at one end of the gun body 101 and is tilted downward. A first switch 8 is arranged on one side of the gun handle 102 close to the gun body 101. A galvanometer drive circuit board 6 is arranged inside the gun handle 102, and a second switch 7 is arranged on one end of the inner side of the gun handle 102 close to the galvanometer drive circuit board 6. The second switch 7 is installed on the galvanometer drive circuit board 6. Pressing the second switch 7 and the first switch 8 at the same time turns on the welding gun. The second switch 7 and the first switch 8 are both mechanical switches and are arranged at the upper and lower ends of the inner side of the gun handle 102. The user holds the gun handle 102 to conveniently press the two switches at the same time. The galvanometer drive circuit board 6 is specifically arranged inside the gun handle 102. On the one hand, the laser welding gun is connected to the laser or the control box through the optical fiber tube. The galvanometer drive circuit board 6 of the prior art is placed in the laser or the control box. On the one hand, because the galvanometer motor 301 and the galvanometer drive circuit board 6 are used in conjunction with each other, when the galvanometer motor 301 or the galvanometer drive circuit board 6 is damaged, it is necessary to dismantle the laser or the control box for replacement, which is very inconvenient. Customers cannot operate by themselves and need to solve it by after-sales. The galvanometer drive circuit board 6 is placed in the welding gun, and the galvanometer motor 301 or the galvanometer drive circuit board 6 is replaced. Customers can operate by themselves, which is convenient for after-sales and reduces after-sales costs. On the other hand, in the prior art, the welding gun is generally a single switch, that is, only the first switch 8 is provided. During use, the user is prone to mis-triggering. In this embodiment, a double switch of the first switch 8 and the second switch 7 is provided. The second switch 7 and the first switch 8 need to be pressed at the same time to turn on the welding gun, which has higher safety and reliability. In addition, the second switch 7 is provided on the galvanometer drive circuit board 6, which reduces the size of the welding gun.
[0031] The laser emitting module 2 is installed inside the gun handle 102. One end of the laser emitting module 2 is provided with an integrated porous tube 10 for transmitting light and electricity. Specifically, the laser emitting module 2 includes an integrated laser output head and a collimator. The integrated porous tube 10 is inserted into the gun handle 102 from one end of the gun handle 102 away from the gun body 101, and one end of the integrated porous tube 10 is connected to the laser output head. A plurality of through holes are provided inside the integrated porous tube 10 along its length direction. The welding gun requires optical fiber, circuit and gas path to work. The purpose of blowing is to ensure Welding quality, forming a protection zone in the welding area to prevent welding oxidation and chemical reactions, and blowing can protect the window mirror assembly 5 to prevent welding smoke from contaminating the lens. The existing technology is optical and electrical separation, and there are only light and gas on the laser emission module 2, and the light and gas pipelines are separate. In this embodiment, by setting an integrated porous tube 10, the light and gas pipelines are integrated into one, which can reduce the volume and weight, and also facilitate the after-sales of the welding gun in the later stage. For example, if the laser emission module 2 is damaged, it can be dismantled and replaced together. The modular design reduces the weight of the welding gun and is convenient for users to use;
[0032] The reflective galvanometer module 3 is arranged at the turning point of the gun body 101 and the gun handle 102, and the reflective galvanometer module 3 includes a galvanometer motor 301 fixed inside the welding gun body 1 and a reflector 302 for reflecting the laser emitted by the laser emitting module 2. The rotating shaft of the galvanometer motor 301 is fixedly connected to the reflector 302 for driving the reflector 302 to swing. Specifically, refer to the attached Figure 6 , a lens clamp 303 is fixed at one end of the reflector 302, and the rotating shaft of the galvanometer motor 301 is inserted into the lens clamp 303 and then fixed by bolts, so that the connection is more firm and stable. In the prior art, the lens clamp is clamped at the edge of the reflector 302, and the clamping range is small. The precision is not enough when fixing, and it needs to be universally adjustable, which is achieved by top screws or other methods. The disadvantage is that it is unstable. If the position is incorrect, it is easy to burn the sealing ring on the side of the nozzle or the reflector 302, and frequent correction is required, which is troublesome. The present application arranges an extended motor shaft to be inserted into the lens clamp 303, and then fixed by bolts, so that the clamping range is relatively large, and the precision is relatively high after the reflector 302 is installed;
[0033] Further, see Attachment Figure 4 The galvanometer motor 301 is fixed inside the welding gun body 1 through a clamp 12. Specifically, the clamp 12 includes a fixing seat 121 fixed inside the welding gun body 1 and a pressing portion 122 integrally arranged at the top of the fixing seat 121. The fixing seat 121 and the pressing portion 122 are both provided with arc grooves on opposite sides. One end of the fixing seat 121 and the pressing portion 122 are fixedly connected by bolts, which are used to press the galvanometer motor 301 on the top of the fixing seat 121. A positioning portion 123 is provided at one end of the fixing seat 121, and a positioning portion 123 is provided in the middle of the positioning portion 123. Through holes that match each other, the fixing seat 121 and the pressing part 122 are directly fixed inside the welding gun body 1. When assembling, the galvanometer motor 301 is directly inserted into the fixing seat 121 and the pressing part 122, and then the bolts at the edge of the pressing part 122 are rotated to press the galvanometer motor 301 inside the fixing seat 121 to complete the installation. The pitch cannot be adjusted, the stability is better, and the installation and debugging and later correction are convenient. When working, the galvanometer motor 301 can only drive the reflector 302 to swing around its axis to change the width of the laser light, which is convenient for the staff to align the weld for welding;
[0034] The focusing mirror assembly 4 and the window mirror assembly 5 are arranged on the gun body 101, and their specific structure is the prior art and will not be described in detail here. The focusing mirror assembly 4 is used to focus the laser reflected by the reflective galvanometer module (3). A gun rod is arranged at the end of the gun body 101 away from the gun handle 102, and the window mirror assembly 5 is arranged at the end of the welding gun close to the gun rod, which is mainly used to protect the focusing mirror assembly 4 and prevent splashes from splashing onto the focusing mirror assembly 4 and causing damage to the lens. It is necessary to regularly replace the window mirror assembly 5 to ensure the processing accuracy requirements. In the prior art, the focusing mirror assembly 4 and the window mirror assembly 5 are generally inserted into the top of the gun body 101 from top to bottom, and then fixedly connected to the gun body 101 by bolts. During the use of the welding gun, dust is easily accumulated on its surface, so replacement is required. During the process of welding the window mirror assembly 5, dust is easily brought into the interior of the welding gun. In this embodiment, a protective cover 13 for shielding and sealing the window mirror assembly 5 is provided on one side of the top of the gun body 101, which can be opened and closed. The protective cover 13 covers the top of the focusing mirror assembly 4 and the window mirror assembly 5. Specifically, one side of the protective cover 13 is hinged to the gun body 101, and the other side is fixedly connected to the gun body 101 by a buckle. It is easy to open and close and not easy to lose. It can also be set to other connection methods as needed. In order to improve the sealing effect, a sealing gasket is provided on the abutting surface of the gun body 101 and the protective cover 13. When working, the laser emitted by the laser emitting module 2 is reflected by the reflecting galvanometer module 3 and then passes through the focusing mirror assembly 4 and the window mirror assembly 5 in sequence, and finally enters the gun rod for spraying out for welding;
[0035] The welding gun body 1 is provided with a display adjustment module 9 for displaying and adjusting welding gun parameters. The display adjustment module 9 includes a display screen 901 and a micro switch 902 for adjusting welding gun parameters. In the prior art, most welding guns do not have a display screen, and a few welding guns with a display screen cannot adjust parameters. However, the optical fiber tube of the welding gun is generally about 5 meters / 10 meters. When the welding gun and the laser are not placed together, the adjustment is more troublesome. In this embodiment, the display adjustment module 9 is provided to facilitate the adjustment of parameters. Specifically, refer to the attached Figure 1-2 The display adjustment module 9 is arranged on a side close to the reflective galvanometer module 3, and a shell detachably connected to the welding gun body 1 is arranged on the outside thereof. Due to space reasons, the display screen 901 is relatively small and is displayed through a digital tube. Two micro switches 902 are arranged next to it to adjust and switch parameters, one of which is "+" and the other is "-". Long press to enter or exit the editing state, and press "+-" to switch or set parameters. It is convenient to operate, and the power / wire feeding speed / swing width, etc. can be set. The structure is compact and more convenient to use;
[0036] In one embodiment, the welding gun body 1 is provided with an indicator light 14 which displays the working status of the device and whether it is faulty. Figure 2 The indicator light 14 is arranged on one side of the welding gun body 1 close to the display adjustment module 9, so that the user can understand the working status of the welding gun in real time;
[0037] In one embodiment, a transfer platform 11 is provided on the outer side wall of the welding gun body 1, which can be used for robot welding to meet different usage requirements;
[0038] In one embodiment, the welding gun is provided with temperature protection. Specifically, there is a temperature sensor on the welding gun, and there is also a temperature measuring resistor on the circuit board of the display adjustment module 9, both of which can measure the temperature and play a protective role. A high temperature indicates that the lens is dirty or lacks air, and corresponding operations need to be performed.
[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A handheld laser welding gun, comprising a welding gun body (1) and a reflective galvanometer module (3) arranged inside the welding gun body (1), characterized in that: A galvanometer drive circuit board (6) is also provided inside the welding gun body (1); The welding gun body (1) comprises a gun body (101) and a gun handle (102) arranged obliquely downward at one end of the gun body (101), and a first switch (8) is arranged on a side of the gun handle (102) close to the gun body (101), the galvanometer drive circuit board (6) is arranged inside the gun handle (102), and a second switch (7) is arranged on an end of the gun handle (102) close to the galvanometer drive circuit board (6), the second switch (7) is mounted on the galvanometer drive circuit board (6), and the welding gun is turned on by pressing the second switch (7) and the first switch (8) at the same time.
2. The handheld laser welding gun according to claim 1, characterized in that: A laser emission module (2) is arranged inside the welding gun body (1), and an integrated multi-hole tube (10) for transmitting both light and electricity is arranged at one end of the laser emission module (2).
3. The handheld laser welding gun according to claim 2, characterized in that: The reflective galvanometer module (3) comprises a galvanometer motor (301) fixed inside the welding gun body (1) via a clamp (12) and a reflector (302) used to reflect laser light emitted by the laser emission module (2); the rotating shaft of the galvanometer motor (301) is fixedly connected to the reflector (302) and is used to drive the reflector (302) to swing.
4. The handheld laser welding gun according to claim 3, characterized in that: A focusing mirror assembly (4) for focusing laser light reflected by the reflective galvanometer module (3) and a window mirror assembly (5) for protecting the focusing mirror assembly (4) are arranged inside the welding gun body (1); a protective cover (13) for shielding and sealing the focusing mirror assembly (4) and the window mirror assembly (5) is arranged on one side of the top end of the welding gun body (1) in an openable and closable manner.
5. The handheld laser welding gun according to claim 1, characterized in that: The welding gun body (1) is provided with a display adjustment module (9) for displaying and adjusting welding gun parameters, and the display adjustment module (9) comprises a display screen (901) and a micro switch (902) for adjusting welding gun parameters.
6. The handheld laser welding gun according to claim 1, characterized in that: A transfer platform (11) is provided on the outer side wall of the welding gun body (1).
7. The handheld laser welding gun according to claim 1, characterized in that: The welding gun body (1) is provided with an indicator light (14) for displaying the working status of the device and whether there is a fault.
8. The handheld laser welding gun according to claim 1, characterized in that: The welding gun is provided with a temperature protection.