An aircraft reinforcement bracket high-thickness gap welding device

Abstract

The present invention relates to the technical field of welding devices, and specifically to a high-thickness gap welding device for aircraft reinforcement brackets, including a welding gun for high-thickness gap welding of aircraft reinforcement brackets, a wire feeding shell, and a wire winding disc detachably installed on the wire feeding shell. A wire feeding frame is fixedly installed on the inner bottom wall of the wire feeding shell, and a wire feeding mechanism is arranged on the wire feeding frame; the wire feeding mechanism includes a lower mounting frame, an upper mounting frame, an upper wire feeding wheel mounted on the upper mounting frame, a lower wire feeding wheel mounted on the lower mounting frame, and a driving structure mounted on the back of the lower mounting frame for driving the lower wire feeding wheel. An adjusting mechanism for adjusting the welding speed is arranged on the outside of the welding gun and the wire feeding shell. The present invention realizes the control of the air supply of the nozzle by means of the cooperation of connecting rods and cooperates with the friction force of the wire feeding wheels to control the welding speed. At the same time, the wire feeding wheels are cleaned to reduce the wear of the wire feeding wheels, thereby improving the welding quality and efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of welding devices, and specifically to a high-thickness gap welding device for aircraft reinforcement brackets. Background Art

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. Welding technology can simplify the production process of large equipment. At the same time, it can also reduce the manufacturing cost. And because the welded parts have high stability, welding technology is widely used at present. High-thickness gap welding of aircraft reinforcement brackets refers to the process of welding the high-thickness gaps existing in the reinforcement brackets on the aircraft. This process is particularly important in aircraft manufacturing and maintenance because the reinforcement brackets are key components of the aircraft structure, and their strength and stability are directly related to the safety and reliability of the aircraft.

[0003] Wire feeding is a very important operation link in the welding process. With the development of technology, a large number of welding technologies are required in the production industry. When welding, a welding machine is needed. Among them, in order to be able to perform welding operations quickly and facilitate the staff to carry out rapid welding, the wire feeder is crucial. It can automatically feed wire for the welding machine, facilitating the rapid operation of the welding machine and improving work efficiency.

[0004] Chinese Patent Publication No. CN115570241A discloses "a wire feeding device for a welding machine, which relates to the technical field of welding equipment and includes a machine shell. A wire spool for loading welding wire is arranged inside the machine shell. The wire spool is rotatably arranged in the machine shell, and a wire feeding assembly is arranged in the machine shell. This application has the effects of high automation degree and stable wire feeding".

[0005] The above patent has the following deficiencies: The wire feeding mechanism cannot adjust the wire feeding speed. When welding workpieces, too fast or too slow wire feeding speed will lead to poor welding. Moreover, the impurities on the wire feeding wheel cannot be cleaned. Over time, it will not only affect the wire feeding stability, but also damage the wire feeding wheel, increasing the equipment usage cost.

[0006] Therefore, it is urgent to improve the welding equipment to solve the above existing problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a high-thickness gap welding device for aircraft reinforcement brackets. By means of the cooperation of connecting rods, it realizes the control of the gas supply of the nozzle and cooperates with the friction force of the wire feeding wheel to control the welding speed. At the same time, it cleans the wire feeding wheel to reduce the wear of the wire feeding wheel, thereby improving the welding quality and efficiency.

[0008] To achieve the above object, the main technical solutions adopted by the present invention include: a high-thickness gap welding device for an aircraft reinforcement bracket, comprising a welding gun for high-thickness gap welding of the aircraft reinforcement bracket, a wire feeding shell, and a wire winding disc detachably mounted on the wire feeding shell. A wire feeding frame is fixedly installed on the inner bottom wall of the wire feeding shell, and a wire feeding mechanism is arranged on the wire feeding frame;

[0009] The wire feeding mechanism includes a lower mounting frame, an upper mounting frame, an upper wire feeding wheel mounted on the upper mounting frame, a lower wire feeding wheel mounted on the lower mounting frame, and a driving structure mounted on the back of the lower mounting frame for driving the lower wire feeding wheel;

[0010] An adjusting mechanism for adjusting the welding speed is arranged on the outside of the welding gun and the wire feeding shell. The adjusting mechanism includes a connecting seat fixedly installed on the right side of the wire feeding frame, a connecting rod hinged to the connecting seat, a first connecting structure and a second connecting structure hinged to the left and right ends of the connecting rod respectively. The first connecting structure extends into the wire feeding frame and is connected to the upper surface of the upper mounting frame. The second connecting structure extends into the welding gun, and a piston block slidably connected to the inner wall of the welding gun, a baffle plate hinged to the inner wall of the welding gun, and a reset telescopic rod are hinged to the bottom end of the second connecting structure. The other end of the reset telescopic rod is hinged to the lower surface of the baffle plate. An electric telescopic rod is hinged between the inner top wall of the wire feeding shell and the connecting rod.

[0011] Preferably, a fixing column for mounting the wire winding disc is rotatably installed on the inner wall of the wire feeding shell, and a perforation and a wire outlet hole are provided on the right side of the wire feeding shell.

[0012] Preferably, the number of the upper wire feeding wheels and the lower wire feeding wheels is two each. The driving structure includes a first motor fixedly installed on the back of the lower mounting frame. The two lower wire feeding wheels are respectively connected to the output shaft of the first motor and the lower mounting frame through a shaft rod, and first transmission wheels are installed at the ends of the two shaft rods. A first belt is connected between the two first transmission wheels.

[0013] Preferably, the first connecting structure is composed of a shaft rod, a connecting plate, and an elastic telescopic rod. The upper surface of the connecting plate is hinged to the bottom end of the shaft rod, and the elastic telescopic rod is fixedly installed between the connecting plate and the upper mounting frame.

[0014] Preferably, connecting shafts are installed at the tops of the first connecting structure and the second connecting structure, and annular connecting frames slidably matched with the connecting shafts are installed at the left and right ends of the connecting rod;

[0015] The number of the baffle plates is two, and the two baffle plates are symmetrically installed inside the welding gun. A step is provided on the opposite side of the two baffle plates for sealing the inside of the welding gun. An air supply pipe is fixedly communicated with the back of the welding gun, and the air supply pipe is higher than the baffle plate.

[0016] Preferably, a cleaning structure for cleaning the upper wire feeding wheel and the lower wire feeding wheel is installed on the wire feeding frame. The cleaning structure is composed of a housing, a cleaning brush slidably arranged in the housing, and a first return spring fixedly installed outside the housing.

[0017] Wherein, one side of the first return spring away from the housing at the top and the bottom is respectively fixed to the inner top wall and the inner bottom wall of the wire feeding frame, and guide rods extending to the outside of the wire feeding frame are installed on one side of the upper and lower housings away from the upper wire feeding wheel and the lower wire feeding wheel, and the first return spring is wound around the outside of the guide rod.

[0018] Preferably, the cleaning brush abuts against the outer surfaces of the upper wire feeding wheel and the lower wire feeding wheel by the elastic force of the first return spring to clean the upper wire feeding wheel and the lower wire feeding wheel.

[0019] Preferably, a dust suction structure for cooperating with the cleaning brush is arranged inside the housing. The dust suction structure includes a dust suction fan and a partition plate. Suction holes are opened on one side of the housing close to the upper wire feeding wheel and the lower wire feeding wheel, and the dust suction fan is installed on one side of the housing away from the suction holes.

[0020] Wherein, a cavity, a sliding groove and a mounting groove are opened inside the housing. The partition plate is slidably installed in the cavity, and the suction holes are communicated with the cavity.

[0021] Preferably, a wire feeding wheel groove wear detection structure is arranged on one side of the cleaning brush close to the housing and in the mounting groove. The wire feeding wheel groove wear detection structure is composed of a pressure sensing block and an abutting block. The pressure sensing block is installed in the mounting groove by bolts, and the abutting block is installed on one side of the cleaning brush close to the housing.

[0022] Preferably, the mounting groove is opened in the sliding groove, and a second return spring is installed between the sliding groove and the cleaning brush to cooperate with the pressure sensing block and the abutting block to detect the wire feeding wheel groove.

[0023] The present invention has at least the following beneficial effects:

[0024] 1. When the aircraft reinforcement bracket high-thickness gap welding device is in use, by controlling the up-and-down movement amplitude of the first connection structure and the second connection structure, the friction between the upper wire feeding wheel and the lower wire feeding wheel is controlled. The suction force generated when the piston block moves upward or the impact force generated when it moves downward causes the two baffles to fit or unfold, realizing the opening and closing of the pipeline in the spray gun, controlling the gas entry, enabling the flame in the welding gun to be controlled, and realizing the control of the welding speed by slowing down the wire feeding speed and controlling the gas entry amount.

[0025] Moreover, by installing the cleaning brush, when the upper wire feeding wheel and the lower wire feeding wheel rotate, the grooves and easily fouled parts can be cleaned, improving production efficiency, reducing equipment failure rate, ensuring the continuity of the production process, and at the same time ensuring the stable wire feeding.

[0026] 2. For the high-thickness gap welding device of the aircraft reinforcement bracket, when adjusting the distance between the upper wire feeding wheel and the lower wire feeding wheel, the elasticity of the first return spring is utilized to ensure that the cleaning brush can always perform cleaning. Without installing telescopic equipment, the cleaning function of the cleaning brush can be guaranteed.

[0027] When the cleaning brush is cleaning, through the abutting cooperation of the second return spring, the pressure sensing block and the abutting block, it is convenient for the staff to detect the parallelism of the grooves of the upper wire feeding wheel and the lower wire feeding wheel. This not only facilitates the maintenance of the staff but also avoids the situation where the staff cannot replace the upper wire feeding wheel and the lower wire feeding wheel in a timely manner when they are damaged. Brief Description of the Drawings

[0028] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0029] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 is a schematic diagram of the wire feeding shell structure of the present invention;

[0031] Figure 3 is a schematic diagram of the wire winding disc structure of the present invention;

[0032] Figure 4 is a schematic diagram of a partial structure of the present invention;

[0033] Figure 5 is a schematic diagram of the structures of the first connection structure and the second connection structure of the present invention;

[0034] Figure 6 is a schematic diagram of the baffle and piston block structures of the present invention;

[0035] Figure 7 is a schematic diagram of the lower mounting bracket structure of the present invention;

[0036] Figure 8 is a schematic diagram of the internal structure of the housing of the present invention;

[0037] Figure 9 is a schematic diagram of the pressure sensing block structure of the present invention;

[0038] Figure 10 is a cross-sectional view of the housing of the present invention.

[0039] In the figure, 1 is a welding gun; 2 is a wire feeding shell; 3 is a fixing column; 4 is a wire winding disc; 5 is a wire feeding frame; 6 is a lower mounting frame; 7 is an upper mounting frame; 8 is an upper wire feeding wheel; 9 is a lower wire feeding wheel; 10 is a first motor; 11 is a first driving wheel; 12 is a first belt; 13 is a connecting seat; 14 is a connecting rod; 15 is a first connecting structure; 16 is a second connecting structure; 17 is an electric telescopic rod; 18 is an annular connecting frame; 19 is a connecting shaft; 20 is a piston block; 21 is a baffle; 22 is a reset telescopic rod; 23 is a housing; 24 is a cleaning brush; 25 is a first reset spring; 26 is a guide rod; 27 is a sliding groove; 28 is a mounting groove; 29 is a second reset spring; 30 is a pressure sensing block; 31 is an abutting block; 32 is a dust suction fan; 33 is a dust suction hole; 34 is a partition; 35 is a cavity. Detailed implementation manners

[0040] The following will describe in detail the implementation manners of the present application in conjunction with the drawings and embodiments, so as to fully understand how the present application uses technical means to solve technical problems and achieve the implementation process of technical effects and implement accordingly.

[0041] As Figures 1-3 shown, the aircraft reinforcement bracket high-thickness gap welding device provided in this embodiment includes a welding gun 1 for aircraft reinforcement bracket high-thickness gap welding, a wire feeding shell 2, and a wire winding disc 4 detachably installed on the wire feeding shell 2. A wire feeding frame 5 is fixedly installed on the inner bottom wall of the wire feeding shell 2. A fixing column 3 for installing the wire winding disc 4 is rotatably installed on the inner wall of the wire feeding shell 2. A perforation and a wire outlet hole are opened on the right side of the wire feeding shell 2. A cleaning sleeve is installed in the wire outlet hole, which can scrape off the impurities on the outer surface of the welding wire.

[0042] In order to cooperate with the use of the welding gun 1, in this embodiment, as Figure 1 、 Figure 4 and Figure 7 shown, a wire feeding mechanism is provided on the wire feeding frame 5; the wire feeding mechanism includes a lower mounting frame 6, an upper mounting frame 7, an upper wire feeding wheel 8 installed on the upper mounting frame 7, a lower wire feeding wheel 9 installed on the lower mounting frame 6, and a driving structure installed on the back of the lower mounting frame 6 for driving the lower wire feeding wheel 9; the number of both the upper wire feeding wheel 8 and the lower wire feeding wheel 9 is two. The driving structure includes a first motor 10 fixedly installed on the back of the lower mounting frame 6. The two lower wire feeding wheels 9 are respectively connected to the output shaft of the first motor 10 and the lower mounting frame 6 through shaft rods, and first driving wheels 11 are installed at the ends of the two shaft rods. A first belt 12 is drivingly connected between the two first driving wheels 11.

[0043] Specifically, anti-slip pads are installed on the outer surfaces of the upper wire feeding wheel 8 and the lower wire feeding wheel 9, which can enhance the friction with the welding wire. During use, the upper wire feeding wheel 8 and the lower wire feeding wheel 9 are abutted against each other, and then the first motor 10 is started. Through the transmission cooperation of the first transmission wheel 11 and the first belt 12, the driving of the lower wire feeding wheel 9 is realized, so as to convey the welding wire. Wire outlet holes are provided on both the left and right sides of the wire feeding frame 5, and cleaning sleeves are also installed in the two wire outlet holes, which can scrape off the impurities on the outer surface of the welding wire.

[0044] In order to be able to control the welding speed, in this embodiment, as Figure 1 , Figures 4-6 shown, an adjusting mechanism for adjusting the welding speed is provided on the outside of the welding gun 1 and the wire feeding housing 2. The adjusting mechanism includes a connecting seat 13 fixedly installed on the right side of the wire feeding frame 5, a connecting rod 14 hingedly installed on the connecting seat 13, a first connecting structure 15 and a second connecting structure 16 hingedly installed at the left and right ends of the connecting rod 14. The first connecting structure 15 extends into the wire feeding frame 5 and is connected to the upper surface of the upper mounting frame 7, and the second connecting structure 16 extends into the welding gun 1. The bottom end of the second connecting structure 16 is hingedly installed with a piston block 20 slidably connected to the inner wall of the welding gun 1, a baffle 21 hingedly installed on the inner wall of the welding gun 1, and a reset telescopic rod 22. The other end of the reset telescopic rod 22 is hingedly connected to the lower surface of the baffle 21. An electric telescopic rod 17 is hingedly installed between the inner top wall of the wire feeding housing 2 and the connecting rod 14.

[0045] Specifically, as Figure 5 and Figure 6 shown, connecting shafts 19 are installed at the tops of both the first connecting structure 15 and the second connecting structure 16, and annular connecting frames 18 slidably matched with the connecting shafts 19 are installed at the left and right ends of the connecting rod 14; the number of the baffles 21 is two, and the two baffles 21 are symmetrically installed inside the welding gun 1. A step is provided on the opposite side of the two baffles 21 for sealing the inside of the welding gun 1. The back of the welding gun 1 is fixedly communicated with an air supply pipe, and the air supply pipe is higher than the baffle 21. By driving the piston block 20 to move upward through the second connecting structure 16 to generate suction, the two baffles 21 are made to fit together to seal the pipeline inside the spray gun, reducing the gas entry, so that the flame inside the welding gun 1 will decrease. The welding gun is composed of a gun body, a gun head and a gun barrel. A sealing plate is installed at the top end of the gun barrel, and a through hole is provided in the sealing plate for the telescopic movement of the second connecting structure 16. When the two baffles 21 are in a horizontal plane, there is a gap between the two baffles 21 to facilitate the gas transmission and prevent the welding gun 1 from stopping.

[0046] Among them, in order to improve the adjustment stability of the upper mounting bracket 7, a guiding structure for limiting the upper mounting bracket 7 can also be installed on the inner wall of the wire feeding bracket 5 to ensure the linear displacement of the upper mounting bracket 7 up and down. The reset telescopic rod 22 is composed of a telescopic sleeve and a telescopic rod. A sliding rod slidably connected to the inside of the telescopic sleeve is installed on the outer wall of the telescopic rod. The sliding rod can limit the baffle 21 to prevent the baffle 21 from flipping too much when restoring to its original state upward. A spring connected to the bottom end of the telescopic rod is installed inside the telescopic sleeve, enabling the baffle 21 to better block the pipeline. The connecting seat 13 is located at the middle of the connecting rod 14.

[0047] In order to improve the wire feeding effect, in this embodiment, as Figures 8-10 shown, a cleaning structure for cleaning the upper wire feeding wheel 8 and the lower wire feeding wheel 9 is installed on the wire feeding bracket 5. The cleaning structure is composed of a housing 23, a cleaning brush 24 slidably arranged inside the housing 23, and a first reset spring 25 fixedly installed outside the housing 23. Among them, one side of the top and bottom first reset springs 25 away from the housing 23 is respectively fixed to the inner top wall and the inner bottom wall of the wire feeding bracket 5, and guide rods 26 extending to the outside of the wire feeding bracket 5 are installed on one side of the upper and lower housings 23 away from the upper wire feeding wheel 8 and the lower wire feeding wheel 9, and the first reset spring 25 is wound around the outside of the guide rod 26. The guide rod 26 can guide the housing 23 to enable its linear displacement, and at the same time can ensure that the first reset spring 25 fully deforms, improving the deformation effect.

[0048] It should be noted that the cleaning brush 24 abuts against the outer surfaces of the upper wire feeding wheel 8 and the lower wire feeding wheel 9 through the elastic force of the first reset spring 25 to achieve the cleaning of the upper wire feeding wheel 8 and the lower wire feeding wheel 9. Through the elasticity of the first reset spring 25, the cleaning brush 24 can always perform cleaning. Without installing telescopic equipment, the cleaning function of the cleaning brush 24 can be ensured. The cleaning brush 24 is composed of a mounting block and a brush plate. The brush plate is connected and fixed to the mounting block by bolts for subsequent replacement. At the same time, through the installation of the first reset spring 25, the situation that the cleaning brush 24 cannot abut against the upper wire feeding wheel 8 and the lower wire feeding wheel 9 after long-term use is avoided, further improving the utilization of the cleaning brush 24.

[0049] In order to further clean the upper wire feeding wheel 8 and the lower wire feeding wheel 9, as Figure 10As shown, a dust suction structure for cooperating with the cleaning brush 24 is arranged inside the housing 23. The dust suction structure includes a dust suction fan 32 and a partition plate 34. A dust suction hole 33 is formed on one side of the housing 23 close to the upper wire feeding wheel 8 and the lower wire feeding wheel 9, and the dust suction fan 32 is installed on the side of the housing 23 away from the dust suction hole 33. Among them, a cavity 35, a sliding groove 27 and a mounting groove 28 are formed inside the housing 23. The partition plate 34 is slidably installed in the cavity 35, and the dust suction hole 33 is communicated with the cavity 35. The partition plate 34 is an adhesive plate. The dust suction fan 32 makes the cavity 35 form a negative pressure. The dust suction hole 33 can adsorb the dust cleaned by the cleaning brush 24 and bond the dust through the partition plate 34, avoiding the dispersion of dust, improving the wire feeding environment, and at the same time avoiding the dust remaining on the outside of the welding wire. The outside of the housing 23 is installed with a maintenance plate through bolts, which is convenient for disassembling and overhauling the partition plate 34.

[0050] In order to further improve the applicability of the device, as Figure 8 and Figure 9 shown, a wire feeding wheel groove wear detection structure is arranged on the side of the cleaning brush 24 close to the housing 23 and inside the mounting groove 28. The wire feeding wheel groove wear detection structure is composed of a pressure sensing block 30 and an abutting block 31. The pressure sensing block 30 is installed in the mounting groove 28 through bolts, and the abutting block 31 is installed on the side of the cleaning brush 24 close to the housing 23.

[0051] Specifically, the mounting groove 28 is formed in the sliding groove 27, and a second return spring 29 is installed between the sliding groove 27 and the cleaning brush 24 to cooperate with the pressure sensing block 30 and the abutting block 31 to detect the wire feeding wheel groove. The number of the second return springs 29 is four, and the four second return springs 29 are arranged in a rectangular shape.

[0052] When this embodiment is in use, through the abutting cooperation of the second return spring 29, the pressure sensing block 30 and the abutting block 31, it is convenient for the staff to detect the parallelism of the grooves of the upper wire feeding wheel 8 and the lower wire feeding wheel 9, which is not only convenient for the staff to overhaul, but also avoids the situation that the staff cannot replace the upper wire feeding wheel 8 and the lower wire feeding wheel 9 in time when they are damaged.

[0053] As Figures 1-10 shown, the principle of the aircraft reinforcement bracket high-thickness gap welding device provided by this embodiment is as follows:

[0054] When in use, the electric telescopic rod 17 is extended and retracted to make the two ends of the connecting rod 14 move respectively. When the right end of the connecting rod 14 is tilted up and the left end is moved down, the first connecting structure 15 adjusts the distance between the upper wire feeding wheel 8 and the lower wire feeding wheel 9, and the second connecting structure 16 drives the piston block 20 to move down. The piston block 20 is used to open the baffle 21, so that the external gas enters the welding gun through a preset channel to achieve welding. On the contrary, when the right end of the connecting rod 14 moves down and the left end is lifted, the friction between the upper wire feeding wheel 8 and the lower wire feeding wheel 9 is controlled, and the second connecting structure 16 drives the piston block 20 to move up to generate suction so that the two baffles 21 fit together to seal the pipeline in the spray gun, slow down the gas entry, so that the flame in the welding gun 1 will be reduced, thereby reducing the welding wire delivery speed and controlling the gas entry amount, thereby achieving the control of the welding speed;

[0055] Moreover, by installing the cleaning brush 24, when the upper wire feeding wheel 8 and the lower wire feeding wheel 9 rotate, the grooves and areas prone to dirt accumulation can be cleaned, thereby improving production efficiency, reducing equipment failure rate, ensuring the continuity of the production process, and ensuring stable transportation of the welding wire.

[0056] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0057] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0058] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A device for welding high-thickness gaps of aircraft reinforcement brackets, comprising a welding gun (1) for welding high-thickness gaps of aircraft reinforcement brackets, a wire feeding housing (2) and a wire winding disc (4) detachably mounted on the wire feeding housing (2), characterized in that: A wire feeding frame (5) is fixedly mounted on the inner bottom wall of the wire feeding housing (2), and a wire feeding mechanism is arranged on the wire feeding frame (5); The wire feeding mechanism comprises a lower mounting frame (6), an upper mounting frame (7), an upper wire feeding wheel (8) mounted on the upper mounting frame (7), a lower wire feeding wheel (9) mounted on the lower mounting frame (6), and a driving structure mounted on the back of the lower mounting frame (6) for driving the lower wire feeding wheel (9); An adjusting mechanism for adjusting the welding speed is arranged on the outside of the welding gun (1) and the wire feeding housing (2), the adjusting mechanism comprising a connecting seat (13) fixedly mounted on the right side of the wire feeding frame (5), a connecting rod (14) hingedly mounted on the connecting seat (13), a first connecting structure (15) and a second connecting structure (16) hingedly mounted on the left and right ends of the connecting rod (14), wherein the first connecting structure (15) extends into the wire feeding frame (5) and is connected to the upper surface of the upper mounting frame (7), the second connecting structure (16) extends into the welding gun (1), and a piston block (20) slidably connected to the inner wall of the welding gun (1) is hingedly mounted at the bottom end of the second connecting structure (16), a baffle (21) and a reset telescopic rod (22) are hingedly mounted on the inner wall of the welding gun (1), and the other end of the reset telescopic rod (22) is hingedly mounted to the lower surface of the baffle (21), and an electric telescopic rod (17) is hingedly mounted between the inner top wall of the wire feeding housing (2) and the connecting rod (14); The first connection structure (15) is composed of a shaft rod, a connection plate and an elastic telescopic rod, the upper surface of the connection plate is hinged to the bottom end of the shaft rod, and the elastic telescopic rod is fixedly installed between the connection plate and the upper mounting frame (7); A connecting shaft (19) is installed at the top of each of the first connecting structure (15) and the second connecting structure (16), and an annular connecting frame (18) which is slidably matched with the connecting shaft (19) is installed at both left and right ends of the connecting rod (14); The number of the baffles (21) is two, and the two baffles (21) are symmetrically mounted on the inner side of the welding gun (1); opposite sides of the two baffles (21) are provided with matching steps for sealing the inside of the welding gun (1); the back side of the welding gun (1) is fixedly connected to an air supply pipe, and the air supply pipe is higher than the baffle (21).

2. The high thickness gap welding device for aircraft reinforcement bracket according to claim 1 is characterized by: A fixing column (3) for mounting a wire winding disc (4) is rotatably mounted on the inner wall of the wire feeding housing (2), and a through hole and a wire outlet hole are provided on the right side of the wire feeding housing (2).

3. The high thickness gap welding device for aircraft reinforcement bracket according to claim 1, characterized in that: The number of the upper wire feeding wheels (8) and the number of the lower wire feeding wheels (9) are both two, the driving structure comprises a first motor (10) fixedly mounted on the back of the lower mounting frame (6), the two lower wire feeding wheels (9) are respectively connected to the output shaft of the first motor (10) and the lower mounting frame (6) through shafts, and the ends of the two shafts are both mounted with first transmission wheels (11), and the two first transmission wheels (11) are connected to each other by a first belt (12) for transmission.

4. The high-thickness gap welding device for aircraft reinforcement bracket according to claim 1, characterized in that: The wire feeding frame (5) is provided with a cleaning structure for cleaning the upper wire feeding wheel (8) and the lower wire feeding wheel (9), the cleaning structure comprising a housing (23), a cleaning brush (24) slidably arranged in the housing (23), and a first return spring (25) fixedly mounted on the outside of the housing (23); The first return spring (25) at the top and bottom, which is away from the housing (23), is respectively fixed to the inner top wall and the inner bottom wall of the wire feeding frame (5), and the upper and lower housings (23) are both provided with a guide rod (26) extending to the outside of the wire feeding frame (5) on the side away from the upper wire feeding wheel (8) and the lower wire feeding wheel (9), and the first return spring (25) surrounds the outside of the guide rod (26).

5. The high thickness gap welding device for aircraft reinforcement bracket according to claim 4, characterized in that: The cleaning brush (24) is pressed against the outer surfaces of the upper wire feeding wheel (8) and the lower wire feeding wheel (9) by the elastic force of the first return spring (25), thereby cleaning the upper wire feeding wheel (8) and the lower wire feeding wheel (9).

6. The high-thickness gap welding device for aircraft reinforcement bracket according to claim 5, characterized in that: A dust suction structure for use with a cleaning brush (24) is arranged inside the shell (23), the dust suction structure comprising a dust suction fan (32) and a partition (34); a dust suction hole (33) is provided on a side of the shell (23) close to the upper wire feeding wheel (8) and the lower wire feeding wheel (9), and the dust suction fan (32) is installed on a side of the shell (23) away from the dust suction hole (33); A cavity (35), a sliding groove (27) and a mounting groove (28) are provided inside the shell (23); the partition plate (34) is slidably mounted in the cavity (35); and the dust suction hole (33) is in communication with the cavity (35).

7. The high-thickness gap welding device for aircraft reinforcement bracket according to claim 6, characterized in that: A wire feed wheel groove wear detection structure is provided on one side of the cleaning brush (24) close to the housing (23) and in the mounting groove (28); the wire feed wheel groove wear detection structure is composed of a pressure sensing block (30) and an abutment block (31); the pressure sensing block (30) is installed in the mounting groove (28) by means of bolts, and the abutment block (31) is installed on one side of the cleaning brush (24) close to the housing (23).

8. The high-thickness gap welding device for aircraft reinforcement bracket according to claim 7, characterized in that: The installation groove (28) is formed in the slide groove (27), and a second return spring (29) is installed between the slide groove (27) and the cleaning brush (24), and cooperates with the pressure sensing block (30) and the abutment block (31) to detect the groove of the wire feeding wheel.

Images