C-shaped laser spot welding gun device with pressing mechanism

Abstract

The invention provides a C-shaped laser spot welding gun device with a pressing mechanism, and relates to the technical field of spot welding guns, the C-shaped laser spot welding gun device comprises a rack, a laser head, a gun head and an air knife, the laser head is fixedly arranged in the rack; two mounting holes are formed in the peripheral side of the gun head, and the two mounting holes are symmetrically arranged about the center line of the gun head; the air knife comprises a first air knife and a second air knife, and the first air knife and the second air knife are fixedly arranged in the two mounting holes respectively; the second air knife is located on the side, away from the rack, of the first air knife, and the output end of the second air knife inclines towards the side close to the first air knife. According to the spot welding gun, the first air knife and the second air knife are arranged in the two mounting holes correspondingly, an air curtain generated by the first air knife is matched with an air curtain generated by the second air knife, impurities from different directions can be blocked, a laser head and a laser path are comprehensively protected, and therefore safe operation of the spot welding gun is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of spot welding guns, in particular to a C-shaped laser spot welding gun device with a clamping mechanism. Background Art

[0002] A laser spot welding gun is a tool that uses a laser beam as a heat source to heat and spot weld tiny areas of a material. It has the advantages of fast welding speed, deep and narrow welds, and accurate positioning. It is widely used in the welding processing of automotive accessories and precision parts.

[0003] The utility model with announcement number CN215545793U discloses a welding nozzle for multifunctional protection of laser welding guns, including a connecting mounting plate, an upper air knife body, a lower connecting seat, a lower air knife body, an air knife tongue, an air knife cover and a barrier sheet arranged in sequence from top to bottom; the upper air knife body is connected to a first air joint on the side, and two protective gas joints are symmetrically connected to the side of the lower connecting seat; the lower air knife body is connected to a second air joint on the side. The utility model sets two protective gases on both sides of the nozzle, which can be sprayed through the welding nozzle respectively, and has a good protective effect on the area where the weld has just solidified; at the same time, two air paths are set to be sprayed through the air flow channel in the center of the nozzle respectively, forming a gas protection layer to protect the laser welding machine lens. The nozzle can ensure stable welding and prevent the lens from getting dirty, thereby ensuring welding stability and improving welding efficiency.

[0004] In the above technical solution, in order to protect the laser welding machine lens, a first air joint and a second air joint are set to form two gas protection layers in the nozzle. However, the two gas protection layers are independent of each other and can only be used to block impurities from below the nozzle, but cannot effectively deal with impurities from the side of the nozzle. Summary of the invention

[0005] In view of this, the present invention proposes a C-type laser spot welding gun device with a clamping mechanism, which improves the protective performance of the air curtain and ensures the safe operation of the spot welding gun.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a C-type laser spot welding gun device with a clamping mechanism, comprising a frame, a laser head, a gun head and an air knife, wherein:

[0007] The laser head is fixedly arranged in the frame;

[0008] The gun head is fixedly arranged on the frame and is coaxially arranged with the laser head. Two mounting holes are opened on the peripheral side of the gun head, and the two mounting holes are symmetrically arranged about the center line of the gun head.

[0009] The wind knife includes a first wind knife and a second wind knife, and the first wind knife and the second wind knife are respectively fixed in the two mounting holes; the first wind knife is located on a side of the mounting hole close to the frame, and an output end thereof is perpendicular to the axial direction of the gun head; the second wind knife is located on a side of the first wind knife away from the frame, and an output end thereof is inclined toward a side close to the first wind knife, so that the air curtain generated by the second wind knife intersects with the first wind knife or the air curtain generated by the first wind knife.

[0010] On the basis of the above technical solution, preferably, the flow rate of the air curtain generated by the first wind knife is greater than the flow rate of the air curtain generated by the second wind knife;

[0011] The angle between the axis of the output end of the first air knife and the axis of the mounting hole is θ, and 90°≥arctan[2(ya) / (x+d)]≥θ≥arctan[(ya) / x]≥0, wherein x is the inner diameter of the gun head along the axial direction of the mounting hole, y is the length of the mounting hole along the axial direction of the gun head, a is the distance between the first air knife and one end of the mounting hole away from the frame, and d is the outer diameter of the laser head emitting laser at the first air knife.

[0012] Further preferably, threaded holes are provided on the first wind knife and the second wind knife, and a plurality of connecting holes are provided on the side wall inside the mounting hole, and the threaded hole is fixedly connected to one of the connecting holes by a screw to adjust the fixed position and fixed angle of the first wind knife and the second wind knife.

[0013] On the basis of the above technical solution, preferably, the frame includes a housing and a linear module, wherein:

[0014] The gun head is fixedly arranged on the housing;

[0015] The linear module is fixedly arranged in the housing, and the laser head is fixedly arranged on the output end of the linear module.

[0016] More preferably, the linear module includes a screw and a slide, wherein:

[0017] The screw rod is rotatably disposed in the housing;

[0018] The slide seat is slidably arranged in the housing and is connected with the lead screw through threaded cooperation, and the laser head is fixedly arranged on the slide seat.

[0019] More preferably, the frame further comprises a pointer, the pointer penetrates and is slidably disposed on the shell and is fixedly connected to the slide seat.

[0020] More preferably, the frame further includes a window, and the window is detachably fixed to the shell.

[0021] On the basis of the above technical solution, preferably, it also includes a movable arm and a driving cylinder, wherein:

[0022] One end of the movable arm is slidably arranged on the frame, and the other end is located at a side of the gun head away from the frame;

[0023] The driving cylinder is fixedly arranged on the frame, and an output end thereof is fixedly connected to the movable arm.

[0024] More preferably, it also includes an air pipe, which is respectively fixedly arranged on one end of the circumference of the gun head away from the frame and on one end of the movable arm away from the frame;

[0025] Two air pipes are arranged on the gun head, and the two air pipes on the gun head are symmetrically arranged about the axis of the gun head.

[0026] On the basis of the above technical solution, preferably, the end of the gun head away from the frame is in a duckbill shape, and a plurality of heat dissipation holes are provided on the peripheral side of the end of the gun head away from the frame.

[0027] Compared with the prior art, the C-type laser spot welding gun device with a clamping mechanism of the present invention has the following advantages:

[0028] Beneficial effects:

[0029] (1) By arranging the first air knife and the second air knife in two mounting holes respectively, and allowing the air curtain generated by the first air knife to cooperate with the air curtain generated by the second air knife, impurities from different directions can be blocked, and the laser head and the laser path can be fully protected, thereby ensuring the safe operation of the spot welding gun;

[0030] (2) By setting a movable arm, the welding back side of the workpiece can be supported so that the distance between the workpiece and the gun head remains unchanged. By setting a driving cylinder, the distance between the movable arm and the gun head can be adjusted to adapt to different workpieces;

[0031] (3) By setting a linear module, the position of the laser head can be adjusted to control the position of the laser beam focus on the workpiece, so that the spot welding gun can be adapted to different processing conditions;

[0032] (4) By setting up an air pipe and utilizing its connection with the inert protective gas, the workpiece and the weld can be protected, further improving the welding quality of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A three-dimensional diagram of a C-shaped laser spot welding gun device with a clamping mechanism according to the present invention;

[0035] Figure 2 A three-dimensional view of a gun head in a C-shaped laser spot welding gun device with a clamping mechanism of the present invention;

[0036] Figure 3 It is a cross-sectional view of the air knife when the second air knife in a C-type laser spot welding gun device with a clamping mechanism of the present invention is in the first position;

[0037] Figure 4 It is a cross-sectional view of the air knife when the second air knife in a C-type laser spot welding gun device with a clamping mechanism of the present invention is in the second position;

[0038] Figure 5 It is an exploded view of the mounting hole in a C-type laser spot welding gun device with a clamping mechanism of the present invention;

[0039] Figure 6 It is a three-dimensional diagram of the linear module in a C-type laser spot welding gun device with a clamping mechanism of the present invention;

[0040] Figure 7 A three-dimensional diagram of the pointer in a C-type laser spot welding gun device with a clamping mechanism of the present invention;

[0041] Figure 8 A three-dimensional diagram of a driving cylinder in a C-type laser spot welding gun device with a clamping mechanism of the present invention;

[0042] Fig. 9 It is a partial stereoscopic view of a movable arm in a C-type laser spot welding gun device with a clamping mechanism according to the present invention.

[0043] Among them: 1. frame; 11. shell; 12. linear module; 121. screw rod; 122. slide seat; 13. pointer; 14. window; 2. laser head; 3. gun head; 301. mounting hole; 302. heat dissipation hole; 303. connecting hole; 4. air knife; 41. first air knife; 42. second air knife; 401. threaded hole; 5. boom; 6. driving cylinder; 7. air pipe. DETAILED DESCRIPTION

[0044] The following will be combined with the specific implementation of the present invention to clearly and completely describe the technical solution in the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementation. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figure 1-9 As shown, a C-type laser spot welding gun device with a clamping mechanism of the present invention includes a frame 1, a laser head 2, a gun head 3, an air knife 4, a movable arm 5, a driving cylinder 6 and an air pipe 7.

[0046] The laser head 2 is the core component of the welding equipment. It is responsible for emitting a laser beam and using optical elements to focus the laser beam onto the welding area of ​​the workpiece. The laser beam energy is highly concentrated, which can quickly melt the material and form a weld, thereby achieving precise welding of the workpiece.

[0047] The frame 1 is used to support and protect the laser head 2, which is a hollow frame structure. The laser head 2 is fixedly arranged inside the frame 1, and the gun head 3 is used to protect the path of the laser beam. The gun head 3 is also fixedly arranged on the frame 1. The gun head 3 is a tubular structure, and its center line coincides with the axis of the laser beam emitted by the laser head 2.

[0048] A flange plate is fixedly installed on the frame 1, which is used to connect and fix with a robotic arm capable of three-dimensional movement, thereby driving the laser beam to move to different welding positions. The laser head 2 adopts an oscillating laser head in the prior art, which can realize a variety of welding shapes such as spiral, linear, and infinity, thereby meeting different types of welding requirements.

[0049] The gun head 3 also has the effect of protecting the weld. An air pipe 7 is fixedly passed through the end of the gun head 3 away from the frame 1. After the air pipe 7 is connected to the inert gas, an inert gas flow is continuously input into the gun head 3. The inert gas flow passes through the gun head 3 and is then sprayed to the welding area. This can prevent the molten pool and the high-temperature area from reacting with the oxygen in the air to form oxides during welding, thereby ensuring the welding quality. At the same time, the inert gas flow can also take away the heat on the gun head 3, thereby achieving a certain cooling effect.

[0050] The laser head 2 is composed of many optical components and is easily damaged. The welding environment is relatively harsh and there are various impurities in the environment. In order to protect the laser head 2, an air knife 4 is set. Figure 2 and Figure 3As shown, two mounting holes 301 are provided on the peripheral side of the gun head 3, and the two mounting holes 301 are symmetrically arranged about the center line of the gun head 3, and the wind knife 4 includes a first wind knife 41 and a second wind knife 42, and the first wind knife 41 and the second wind knife 42 are both fixedly arranged in the mounting holes 301. When the first wind knife 41 and the second wind knife 42 are connected to the high-pressure air, two air curtains will be formed. The two air curtains are two protective barriers for the laser head 2, reducing the damage of the laser head 2 by external impurities.

[0051] The arrangement of the first wind knife 41 and the second wind knife 42 can be adjusted according to usage requirements. For example, the first wind knife 41 and the second wind knife 42 can be installed in the same mounting hole 301, or the first wind knife 41 and the second wind knife 42 can be fixed in two mounting holes 301 respectively, and the two are arranged at intervals along the axial direction of the gun head 3, so that the first wind knife 41 and the second wind knife 42 produce two parallel or inclined but non-intersecting air curtains. When impurities enter the gun head 3 away from the end of the frame 1, the two air curtains can block the impurities and prevent the impurities from hitting the laser head 2.

[0052] In order to install the first air knife 41 and the second air knife 42 and ensure the smooth discharge of the airflow in the air curtain, the inner diameter of the mounting hole 301 needs to be increased. However, this will cause impurities on the side of the gun head 3 to enter the gun head 3 along the edge of the mounting hole 301, causing damage to the laser head 2. In order to solve this problem, the first air knife 41 and the second air knife 42 are respectively fixed in the two mounting holes 301, so that the first air knife 41 is located on the side of the mounting hole 301 close to the frame 1, and its output end is perpendicular to the axial direction of the gun head 3, so that an air curtain is generated at the position above the mounting hole 301 in the gun head 3, effectively preventing impurities entering the mounting hole 301 from contacting the laser head 2.

[0053] At the same time, the second wind knife 42 is located on the side of the first wind knife 41 away from the frame 1, and the output end of the second wind knife 42 is inclined toward the side close to the first wind knife 41, so that the air curtain generated by the second wind knife 42 intersects with the first wind knife 41 or the air curtain generated by the first wind knife 41, as shown in FIG. Figure 3 As shown, by using this structural setting, not only two barriers can be generated for impurities coming from below the gun head 3, but also two barriers can be generated for impurities coming from the right mounting hole 301. Although there is only one barrier for impurities coming from the left mounting hole 301, a C-shaped flow cavity is formed between the two air curtains, which can speed up the discharge of impurities, thereby improving the protection effect of the laser head 2.

[0054] In order to ensure the effectiveness of the two air curtains, the flow rate of the air curtain generated by the first wind knife 41 should be greater than the flow rate of the air curtain generated by the second wind knife 42, and the former should even be 3-5 times that of the latter, so as to avoid the problem that the air curtain generated by the first wind knife 41 cannot pass through the air curtain generated by the second wind knife 42 when the two air curtains intersect.

[0055] When the first wind knife 41 and the second wind knife 42 are installed in the same mounting hole 301 and the two air curtains are parallel, a large amount of impurities will pass through the two mounting holes 301 along the flow direction of the airflow in the air curtains. When the first wind knife 41 and the second wind knife 42 are installed in the two mounting holes 301 respectively and the two air curtains are parallel, the impurities entering between the first wind knife 41 and the second wind knife 42 will rotate and remain between the two. Both of the above situations will increase the probability of impurities passing through the mounting hole 301, causing the impurities to flow through the irradiation path of the laser beam, and causing the energy of the laser beam irradiating the workpiece to be lost.

[0056] The situation where the air curtain generated by the second air knife 42 intersects with the first air knife 41 or the air curtain generated by the first air knife 41 can also reduce the shielding of the laser beam by impurities. Figure 3 and Figure 4 As shown, at this time, the second wind knife 42 rotates to the first position and the second position respectively, and the impurities from the right mounting hole 301 can only enter the laser path below the air curtain generated by the second wind knife 42, but cannot enter the laser path above the air curtain generated by the second wind knife 42, while the impurities from the left mounting hole 301 can be quickly discharged from the gun head 3 by the C-shaped flow cavity between the two air curtains. When the second wind knife 42 rotates between the first position and the second position, the above effect can be guaranteed.

[0057] Assume that the angle between the axis of the output end of the first wind knife 41 and the axis of the mounting hole 301 is θ, the inner diameter of the gun head 3 along the axial direction of the mounting hole 301 is x, the length of the mounting hole 301 along the axial direction of the gun head 3 is y, the distance between the first wind knife 41 and the end of the mounting hole 301 away from the frame 1 is a, and the outer diameter of the laser head 2 emitting the laser at the first wind knife 41 is d. Under ideal conditions such as the thickness of the air curtain and the specifications of the wind knife 4 are not considered, the second wind knife 42 is in the first position, θ=arctan[2(ya) / (x+d)], and the second When the wind knife 42 is in the second position, θ=arctan[(ya) / x], that is, when 90°≥arctan[2(ya) / (x+d)]≥θ≥arctan[(ya) / x]≥0, impurities from the right mounting hole 301 can be prevented from entering the laser path above the air curtain generated by the second wind knife 42. Although this limited range is derived under ideal conditions, if realistic factors are taken into consideration, the actual rotation range of θ will be greater than this limit range. Therefore, this limit range is also reliable.

[0058] like Figure 3As shown, this structural design has a better protection effect on impurities from the right mounting hole 301. Therefore, in practical applications, the right mounting hole 301 can be directed towards a relatively harsh environment, or the number of wind knives 4 can be increased to protect impurities from the left mounting hole 301.

[0059] When performing welding processing under different working conditions, it is necessary to adjust the installation position and installation angle of the first air knife 41 and the second air knife 42. In order to improve the adjustment convenience, Figure 5 As shown, a threaded hole 401 is opened on the first wind knife 41 and the second wind knife 42, and a plurality of connecting holes 303 are opened on the side wall inside the mounting hole 301, and the threaded hole 401 is fixedly connected to one of the connecting holes 303 by a screw, so that the fixed position of the first wind knife 41 and the second wind knife 42 can be adjusted by selecting the connecting holes 303 in different positions, and the fixed angle of the first wind knife 41 and the second wind knife 42 can be adjusted by loosening and tightening the screws.

[0060] like Figure 1 As shown, the frame 1 includes a shell 11, a linear module 12, a pointer 13 and a window 14, the gun head 3 is fixedly arranged on the shell 11, the linear module 12 is fixedly arranged in the shell 11, and the laser head 2 is fixedly arranged on the output end of the linear module 12 to drive the laser head 2 to move along a straight line, adjust the position of the focus of the laser beam generated by the laser head 2 on the workpiece, and realize different welding requirements.

[0061] As a preferred embodiment, the linear module 12 includes a screw rod 121 and a slide seat 122. Figure 6 As shown, the screw rod 121 is rotatably set in the housing 11, the slide 122 is slidably set in the housing 11, and is connected to the screw rod 121 through threaded cooperation, and the laser head 2 is fixedly set on the slide 122. When the screw rod 121 is rotated, the slide 122 and the laser head 2 can be driven to slide along a straight line. Of course, in order to facilitate the rotation of the screw rod 121, a hand wheel can be installed on the screw rod 121.

[0062] like Figure 6 and Figure 7 As shown, the pointer 13 penetrates and is slidably set on the shell 11, and is fixedly connected to the slide seat 122, so that the pointer 13 can move with the laser head 2, and the pointer 13 is used to reflect the position of the laser head 2. In order to reflect the position of the laser head 2 in the form of a numerical value, a ruler matching the pointer 13 can be set on the outside of the shell 11.

[0063] like Figure 1As shown, the window 14 is fixedly arranged on the shell 11, and the internal situation of the shell 11 can be observed in time through the window 14. At the same time, the window 14 is detachably connected to the shell 11, and the laser head 2 can be maintained by removing the window 14, thereby improving its maintenance convenience.

[0064] One end of the movable arm 5 is located on the side of the gun head 3 away from the frame 1, and is used to support the side of the workpiece away from the laser head 2, so that the distance between the workpiece and the laser head 2 remains unchanged, thereby improving the uniformity of welding; Figure 8 As shown, the other end of the movable arm 5 is slidably set on the frame 1 and fixedly connected to the output end of the driving cylinder 6 fixedly set on the frame 1, so that the distance between the movable arm 5 and the laser head 2 is adjusted by utilizing the telescopic control of the driving cylinder 6, so that the spot welding gun is suitable for different working conditions.

[0065] This spot welding gun is usually used for welding aluminum workpieces, such as Fig. 9 As shown, a copper block structure is installed on one end of the movable arm 5 close to the workpiece, which is not easy to adhere to the aluminum workpiece, thereby further improving the welding quality of the spot welding gun.

[0066] In order to improve the welding quality of the spot welding gun, an air pipe 7 is also fixedly provided on one end of the movable arm 5 away from the frame 1 to blow an inert gas flow toward the side of the workpiece away from the laser head 2 .

[0067] In order to fully protect the weld on the side of the workpiece close to the laser head 2, Figure 2 As shown, two air pipes 7 are provided on the gun head 3, and the two air pipes 7 on the gun head 3 are symmetrically arranged about the axis of the gun head 3, and the end of the gun head 3 away from the frame 1 is arranged in a duckbill shape.

[0068] A lot of heat will be generated during the welding process. In order to dissipate the heat of this device, Figure 2 As shown, a plurality of heat dissipation holes 302 are provided on the peripheral side of the end of the gun head 3 away from the frame 1 , and the plurality of heat dissipation holes 302 are preferably arranged in a circular array around the center line of the gun head 3 .

[0069] The method of using the C-type laser spot welding gun device with a clamping mechanism of the present invention is as follows:

[0070] First, install the air knife 4 at a suitable position in the mounting hole 301, then install the frame 1 on the robotic arm, connect the laser head 2 and the driving cylinder 6 to the control device, connect the air knife 4 and the air pipe 7 to the corresponding air paths respectively, and then adjust the positions of the laser head 2 and the movable arm 5 respectively by rotating the screw rod 121 and controlling the driving cylinder 6. Finally, use the robotic arm to move the spot welding gun to the welding position of the workpiece, and start the laser head 2 for welding.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A C-type laser spot welding gun device with a clamping mechanism, characterized in that: It comprises a frame (1), a laser head (2), a gun head (3) and an air knife (4), wherein: The laser head (2) is fixedly arranged in the frame (1); The gun head (3) is fixedly arranged on the frame (1) and is coaxially arranged with the laser head (2); two mounting holes (301) are provided on the circumference of the gun head (3), and the two mounting holes (301) are symmetrically arranged about the center line of the gun head (3); The wind knife (4) comprises a first wind knife (41) and a second wind knife (42), wherein the first wind knife (41) and the second wind knife (42) are respectively fixedly arranged in the two mounting holes (301); the first wind knife (41) is located on a side of the mounting hole (301) close to the frame (1), and its output end is perpendicular to the axial direction of the gun head (3); the second wind knife (42) is located on a side of the first wind knife (41) away from the frame (1), and its output end is inclined toward a side close to the first wind knife (41), so that the air curtain generated by the second wind knife (42) intersects with the first wind knife (41) or the air curtain generated by the first wind knife (41).

2. A C-shaped laser spot welding gun device with a clamping mechanism as claimed in claim 1, characterized in that: The flow rate of the air curtain generated by the first wind knife (41) is greater than the flow rate of the air curtain generated by the second wind knife (42); The angle between the axis of the output end of the first wind knife (41) and the axis of the mounting hole (301) is θ, and 90°≥arctan[2(ya) / (x+d)]≥θ≥arctan[(ya) / x]≥0, wherein x is the inner diameter of the gun head (3) along the axial direction of the mounting hole (301), y is the length of the mounting hole (301) along the axial direction of the gun head (3), a is the distance between the first wind knife (41) and one end of the mounting hole (301) away from the frame (1), and d is the outer diameter of the laser head (2) emitting laser at the first wind knife (41).

3. A C-shaped laser spot welding gun device with a clamping mechanism as claimed in claim 2, characterized in that: The first wind knife (41) and the second wind knife (42) are provided with threaded holes (401), and a plurality of connecting holes (303) are provided on the side wall inside the mounting hole (301). The threaded hole (401) is fixedly connected to one of the connecting holes (303) by means of screws so as to adjust the fixed position and fixed angle of the first wind knife (41) and the second wind knife (42).

4. A C-shaped laser spot welding gun device with a clamping mechanism as claimed in claim 1, characterized in that: The frame (1) comprises a housing (11) and a linear module (12), wherein: The gun head (3) is fixedly arranged on the housing (11); The linear module (12) is fixedly arranged in the housing (11), and the laser head (2) is fixedly arranged on the output end of the linear module (12).

5. A C-shaped laser spot welding gun device with a clamping mechanism as claimed in claim 4, characterized in that: The linear module (12) comprises a screw rod (121) and a slide seat (122), wherein: The screw rod (121) is rotatably disposed in the housing (11); The slide seat (122) is slidably arranged in the housing (11) and is connected to the lead screw (121) via a threaded fit, and the laser head (2) is fixedly arranged on the slide seat (122).

6. A C-shaped laser spot welding gun device with a clamping mechanism as claimed in claim 5, characterized in that: The frame (1) also includes a pointer (13), which penetrates and is slidably arranged on the housing (11) and is fixedly connected to the sliding seat (122).

7. A C-shaped laser spot welding gun device with a clamping mechanism as claimed in claim 6, characterized in that: The frame (1) further comprises a viewing window (14), wherein the viewing window (14) is detachably fixed on the housing (11).

8. A C-shaped laser spot welding gun device with a clamping mechanism as claimed in claim 1, characterized in that: It also includes a movable arm (5) and a driving cylinder (6), wherein: One end of the movable arm (5) is slidably arranged on the frame (1), and the other end is located on a side of the gun head (3) away from the frame (1); The driving cylinder (6) is fixedly arranged on the frame (1), and its output end is fixedly connected to the movable arm (5).

9. A C-shaped laser spot welding gun device with a clamping mechanism as claimed in claim 8, characterized in that: It also includes an air pipe (7), which is respectively fixedly arranged on one end of the circumference of the gun head (3) away from the frame (1) and on one end of the movable arm (5) away from the frame (1); The gun head (3) is provided with two air pipes (7), and the two air pipes (7) on the gun head (3) are symmetrically arranged with respect to the axis of the gun head (3).

10. A C-shaped laser spot welding gun device with a clamping mechanism as claimed in claim 1, characterized in that: The end of the gun head (3) away from the frame (1) is in a duckbill shape, and a plurality of heat dissipation holes (302) are provided on the peripheral side of the end of the gun head (3) away from the frame (1).

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