High-thickness gap welding device for airplane reinforcing bracket

Abstract

The invention relates to the technical field of welding devices, in particular to an aircraft reinforcing support high-thickness gap welding device which comprises a welding gun for aircraft reinforcing support high-thickness gap welding, a wire feeding shell and a wire winding disc detachably installed on the wire feeding shell. A wire feeding mechanism is arranged on the wire feeding frame; the wire feeding mechanism comprises a lower installation frame, an upper installation frame, an upper wire feeding wheel installed on the upper installation frame, a lower wire feeding wheel installed on the lower installation frame and a driving structure installed on the back face of the lower installation frame and used for driving the lower wire feeding wheel, and adjusting mechanisms used for adjusting the welding speed are arranged on the outer portion of the welding gun and the wire feeding shell. By means of the connecting rod matching mode, air supply of the nozzle is controlled, the welding speed is controlled in cooperation with friction force of the wire feeding wheel, meanwhile, the wire feeding wheel is cleaned, abrasion of the wire feeding wheel is reduced, and therefore the welding quality and efficiency are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding devices, in particular to a high-thickness gap welding device for an aircraft reinforcement bracket. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that uses heating, high temperature or high pressure to join metals or other thermoplastic materials such as plastics. Welding technology can simplify the production process of large equipment and reduce manufacturing costs. In addition, due to the high stability of welded parts, welding technology is widely used at present. Aircraft reinforcement bracket high-thickness gap welding refers to the process of welding the high-thickness gaps in the reinforcement brackets on the aircraft. This process is particularly important in aircraft manufacturing and maintenance, because the reinforcement bracket is a key component of the aircraft structure, and its 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 science and technology, a large number of welding technologies need to be used in the production industry. Welding machines are needed for welding. In order to be able to perform welding operations quickly and facilitate workers to perform fast welding, wire feeders are crucial. They can automatically feed wire to the welding machine, facilitate the welding machine to work quickly, and improve work efficiency.

[0004] Chinese invention patent publication number CN115570241A discloses "a wire feeding device for a welding machine, which relates to the technical field of welding equipment, comprising a casing, wherein a wire reel for loading welding wire is arranged inside the casing, wherein the wire reel is rotatably arranged inside the casing, and a wire feeding assembly is arranged inside the casing. The application has the effects of high degree of automation and stable wire feeding."

[0005] The above patent has the following shortcomings: the wire feeding mechanism cannot adjust the wire feeding speed. When welding workpieces, feeding the wire too fast or too slow will result in poor welding. In addition, 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 cost of equipment use.

[0006] Therefore, it is urgent to improve welding equipment to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to provide a high-thickness gap welding device for an aircraft reinforcement bracket, which controls the air supply of the nozzle and cooperates with the friction force of the wire feeding wheel through the cooperation of a connecting rod to achieve control of the welding speed. At the same time, the wire feeding wheel is cleaned to reduce the wear of the wire feeding wheel, thereby improving the welding quality and efficiency.

[0008] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present invention includes: a high-thickness gap welding device for an aircraft reinforcement bracket, comprising a welding gun for high-thickness gap welding of an aircraft reinforcement bracket, a wire feeding housing and a wire winding disk detachably mounted on the wire feeding housing, a wire feeding rack fixedly mounted on the inner bottom wall of the wire feeding housing, and a wire feeding mechanism provided on the wire feeding rack; The wire feeding mechanism comprises 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 adjustment mechanism for adjusting the welding speed is provided on the outside of the welding gun and the wire feeding housing, and the adjustment mechanism includes a connecting seat fixedly mounted on the right side of the wire feeding frame, a connecting rod hingedly mounted on the connecting seat, a first connecting structure and a second connecting structure hingedly mounted on the left and right ends of the connecting rod, and 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 slidingly connected to the inner wall of the welding gun, a baffle and a reset telescopic rod hingedly mounted on the inner wall of the welding gun are hingedly mounted at the bottom end of the second connecting structure, and the other end of the reset telescopic rod is hingedly mounted to the lower surface of the baffle, and an electric telescopic rod is hingedly mounted between the inner top wall of the wire feeding housing and the connecting rod.

[0009] Preferably, a fixing column for mounting the wire winding disc is rotatably mounted on the inner wall of the wire feeding housing, and a through hole and a wire outlet hole are opened on the right side of the wire feeding housing.

[0010] Preferably, the number of the upper wire feeding wheels and the number of the lower wire feeding wheels are both two, and the driving structure includes a first motor fixedly mounted on the back of the lower mounting frame, the two lower wire feeding wheels are respectively connected to the first motor output shaft and the lower mounting frame through shafts, and the ends of the two shafts are both equipped with first transmission wheels, and a first belt is used for transmission connection between the two first transmission wheels.

[0011] Preferably, the first connection structure 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.

[0012] Preferably, the top ends of the first connecting structure and the second connecting structure are both installed with connecting shafts, and the left and right ends of the connecting rod are both installed with annular connecting frames that are slidably matched with the connecting shafts; There are two baffles, and the two baffles are symmetrically installed on the inner side of the welding gun. The two baffles are provided with matching steps on the opposite side for sealing the inside of the welding gun. The back of the welding gun is fixedly connected with an air supply pipe, and the air supply pipe is higher than the baffle.

[0013] Preferably, the wire feeding frame is provided with a cleaning structure for cleaning the upper wire feeding wheel and the lower wire feeding wheel, and the cleaning structure is composed of a shell, a cleaning brush slidably arranged in the shell, and a first return spring fixedly installed outside the shell; Among them, the first return spring at the top and bottom is respectively fixed to the inner top wall and inner bottom wall of the wire feeding frame on one side away from the shell, and the upper and lower shells are both installed with a guide rod extending to the outside of the wire feeding frame on one side away from the upper wire feeding wheel and the lower wire feeding wheel, and the first return spring is wrapped around the outside of the guide rod.

[0014] Preferably, the cleaning brush is pressed 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, thereby cleaning the upper wire feeding wheel and the lower wire feeding wheel.

[0015] Preferably, a dust suction structure used in conjunction with a cleaning brush is provided inside the shell, the dust suction structure includes a dust suction fan and a partition, a dust suction hole is provided on a side of the shell close to the upper wire feeding wheel and the lower wire feeding wheel, and the dust suction fan is installed on a side of the shell away from the dust suction hole; A cavity, a sliding groove and an installation groove are provided inside the shell, the partition is slidably installed in the cavity, and the dust suction hole is connected with the cavity.

[0016] Preferably, a wire feed wheel groove wear detection structure is provided on the side of the cleaning brush close to the shell and in the mounting groove. The wire feed wheel groove wear detection structure consists of a pressure sensing block and an abutment block. The pressure sensing block is installed in the mounting groove by bolts, and the abutment block is installed on the side of the cleaning brush close to the shell.

[0017] Preferably, the installation groove is opened in the slide groove, and a second return spring is installed between the slide groove and the cleaning brush to cooperate with the pressure sensing block and the abutment block to detect the groove of the wire feeding wheel.

[0018] The present invention has at least the following beneficial effects: 1. The high-thickness gap welding device for the aircraft reinforcement bracket, when in use, controls the friction between the upper wire feeding wheel and the lower wire feeding wheel through the up-and-down movement range of the first connecting structure and the second connecting structure, and the piston block moves upward to generate suction or moves downward to generate impulse, so that the two baffles fit together or unfold, and the pipeline in the spray gun is opened and closed, and the gas entry is controlled, so that the flame in the welding gun can be controlled, and the welding speed is controlled by slowing down the conveying speed of the welding wire and controlling the amount of gas entering; In addition, by installing the cleaning brush, when the upper wire feeding wheel and the lower wire feeding wheel 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 delivery of the welding wire.

[0019] 2. The high-thickness gap welding device of the aircraft reinforcement bracket, when adjusting the spacing between the upper wire feeding wheel and the lower wire feeding wheel, utilizes the elasticity of the first return spring so that the cleaning brush can always be cleaned, and the cleaning function of the cleaning brush can be ensured without installing a telescopic device; When the cleaning brush is cleaning, the abutment cooperation between the second return spring, the pressure sensing block and the abutment block can facilitate the staff to detect the parallelism of the grooves of the upper wire feed wheel and the lower wire feed wheel, which is convenient for the staff to inspect and repair, and avoids the situation where the staff cannot replace the upper wire feed wheel and the lower wire feed wheel in time when they are damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the wire feeding housing of the present invention; Figure 3 It is a schematic diagram of the structure of the wire winding disk of the present invention; Figure 4 It is a partial structural schematic diagram of the present invention; Figure 5 A schematic diagram of the structure of the first connection structure and the second connection structure of the present invention; Figure 6 It is a schematic diagram of the structure of the baffle and the piston block of the present invention; Figure 7 It is a schematic diagram of the structure of the lower mounting frame of the present invention; Figure 8 It is a schematic diagram of the internal structure of the housing of the present invention; Fig. 9 It is a schematic diagram of the structure of the pressure sensing block of the present invention; Fig.10 It is a cross-sectional view of the shell of the present invention.

[0021] In the figure, 1, welding gun; 2, wire feeding housing; 3, fixing column; 4, wire winding reel; 5, wire feeding frame; 6, lower mounting frame; 7, upper mounting frame; 8, upper wire feeding wheel; 9, lower wire feeding wheel; 10, first motor; 11, first transmission wheel; 12, first belt; 13, connecting seat; 14, connecting rod; 15, first connecting structure; 16, second connecting structure; 17, electric telescopic rod; 18, annular connecting frame; 19, connecting shaft; 20, piston block; 21, baffle; 22, reset telescopic rod; 23, housing; 24, cleaning brush; 25, first reset spring; 26, guide rod; 27, slide groove; 28, mounting groove; 29, second reset spring; 30, pressure sensing block; 31, abutment block; 32, dust suction fan; 33, dust suction hole; 34, partition; 35, cavity. DETAILED DESCRIPTION

[0022] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] like Figure 1-Figure 3 As 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 housing 2 and a wire winding disc 4 detachably mounted on the wire feeding housing 2, a wire feeding frame 5 is fixedly mounted on the inner bottom wall of the wire feeding housing 2, a fixed column 3 for mounting the 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 opened on the right side of the wire feeding housing 2. A cleaning sleeve is installed in the wire outlet hole to scrape off impurities on the outer surface of the welding wire.

[0024] In order to cooperate with the welding gun 1, in this embodiment, as Figure 1 , Figure 4 and Figure 7 As shown, 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; the number of the upper wire feeding wheels 8 and 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 respectively provided with first transmission wheels 11, and a first belt 12 for transmission connection between the two first transmission wheels 11.

[0025] Specifically, the outer surfaces of the upper wire feeding wheel 8 and the lower wire feeding wheel 9 are both installed with anti-skid pads, which can enhance the friction with the welding wire. When in use, the upper wire feeding wheel 8 and the lower wire feeding wheel 9 are pressed against each other, and then the first motor 10 is started, and the lower wire feeding wheel 9 is driven through the transmission cooperation between the first transmission wheel 11 and the first belt 12, so as to transport the welding wire. Wire outlet holes are opened on both sides of the wire feeding frame 5, and cleaning sleeves are also installed in the two wire outlet holes to scrape off impurities on the outer surface of the welding wire.

[0026] In order to control the welding speed, in this embodiment, Figure 1 , Figure 4-Figure 6 As 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, and the adjusting mechanism includes 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, and 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, a baffle 21 and a reset telescopic rod 22 hingedly mounted on the inner wall of the welding gun 1 are hingedly mounted at the bottom end of the second connecting structure 16, 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.

[0027] Specifically, Figure 5 and Figure 6 As shown, the top of the first connection structure 15 and the second connection structure 16 are both installed with a connecting shaft 19, and the left and right ends of the connecting rod 14 are both installed with an annular connecting frame 18 that slides with the connecting shaft 19; there are two baffles 21, and the two baffles 21 are symmetrically installed on the inner side of the welding gun 1, and the two baffles 21 are provided with matching steps on the opposite side for sealing the inside of the welding gun 1. The back of the welding gun 1 is fixedly connected with a gas supply pipe, and the gas supply pipe is higher than the baffle 21. The second connection structure 16 drives the piston block 20 to move upward to generate suction so that the two baffles 21 fit together to seal the pipeline in the spray gun, slow down the gas from entering, and reduce the flame in the welding gun 1. The welding gun consists of a gun body, a gun head and a gun barrel. A sealing plate is installed on the top of the gun barrel, and a through hole is opened in the sealing plate for the extension and contraction of the second connection structure 16. When the two baffles 21 are in a horizontal plane, a gap is left between the two baffles 21 to facilitate the delivery of gas and avoid the welding gun 1 from stopping.

[0028] In order to improve the adjustment stability of the upper mounting frame 7, a guide structure for limiting the upper mounting frame 7 can be installed on the inner wall of the wire feeding frame 5 to ensure the upper mounting frame 7 to move linearly up and down. The resetting telescopic rod 22 is composed of a telescopic sleeve and a telescopic rod. The outer wall of the telescopic rod is equipped with a slide bar that is slidably connected to the inside of the telescopic sleeve. The slide bar can limit the baffle 21 to prevent the baffle 21 from turning over too much when it returns to its original state. A spring connected to the bottom end of the telescopic rod is installed in the telescopic sleeve, so that the baffle 21 can better cover the pipeline. The connecting seat 13 is located in the middle of the connecting rod 14.

[0029] In order to improve the wire drawing effect, in this embodiment, Figure 8-Figure 10 As shown, the wire feeding frame 5 is equipped with a cleaning structure for cleaning the upper wire feeding wheel 8 and the lower wire feeding wheel 9, and the cleaning structure is composed of a housing 23, a cleaning brush 24 slidably arranged in the housing 23, and a first return spring 25 fixedly installed on the outside of the housing 23; wherein, the top and bottom first return springs 25 are respectively fixed to the inner top wall and the inner bottom wall of the wire feeding frame 5 on the side away from the housing 23, and the upper and lower housings 23 are both equipped 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. The guide rod 26 can guide the housing 23 so that it can be linearly displaced, and at the same time can ensure that the first return spring 25 is fully deformed to improve the deformation effect.

[0030] It should be noted that the cleaning brush 24 is against the outer surface of the upper wire feed wheel 8 and the lower wire feed wheel 9 through the elastic force of the first return spring 25, so as to clean the upper wire feed wheel 8 and the lower wire feed wheel 9. The elasticity of the first return spring 25 allows the cleaning brush 24 to always be able to clean, and the cleaning function of the cleaning brush 24 can be guaranteed without installing a telescopic device. The cleaning brush 24 is composed of a mounting block and a brush plate, and the brush plate is connected and fixed to the mounting block by bolts for subsequent replacement. At the same time, the installation of the first return spring 25 avoids the situation where the cleaning brush 24 cannot be against the upper wire feed wheel 8 and the lower wire feed wheel 9 after long-term use, thereby further improving the utilization of the cleaning brush 24.

[0031] In order to further clean the upper wire feeding wheel 8 and the lower wire feeding wheel 9, as shown in FIG. Fig.10As shown, the interior of the housing 23 is provided with a dust suction structure used in conjunction with the cleaning brush 24, and the dust suction structure includes a dust suction fan 32 and a partition 34. A dust suction hole 33 is provided on the 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; wherein, the interior of the housing 23 is provided with a cavity 35, a slide groove 27 and a mounting groove 28, and the partition 34 is slidably installed in the cavity 35, and the dust suction hole 33 is connected to the cavity 35. The partition 34 is an adhesive plate, and the dust suction fan 32 forms a negative pressure in the cavity 35. The dust suction hole 33 can absorb the dust cleaned by the cleaning brush 24 and bond the dust through the partition 34 to prevent the dust from floating, improve the wire output environment, and also prevent the dust from remaining on the outside of the welding wire. An inspection plate is installed on the outside of the housing 23 by bolts to facilitate the disassembly and inspection of the partition 34.

[0032] In order to further improve the applicability of the device, Figure 8 and Fig. 9 As shown, a wire feed wheel groove wear detection structure is provided on one side of the cleaning brush 24 close to the shell 23 and in the mounting groove 28. The wire feed wheel groove wear detection structure consists of a pressure sensing block 30 and an abutment block 31. The pressure sensing block 30 is installed in the mounting groove 28 by bolts, and the abutment block 31 is installed on one side of the cleaning brush 24 close to the shell 23.

[0033] Specifically, the installation groove 28 is opened 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 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.

[0034] When the present embodiment is in use, through the abutment cooperation of the second return spring 29, the pressure sensing block 30 and the abutment 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 convenient for the staff to inspect and repair, and 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.

[0035] like Figure 1-Figure 10 As shown, the principle of the high-thickness gap welding device for aircraft reinforcement brackets provided in this embodiment is as follows: 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 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, slowing 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; 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.

[0036] 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.

[0037] 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.

[0038] 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).

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 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).

5. The high-thickness gap welding device for aircraft reinforcement bracket according to claim 1, characterized in that: 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).

6. 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).

7. The high-thickness gap welding device for aircraft reinforcement bracket according to claim 6, 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).

8. The high-thickness gap welding device for aircraft reinforcement bracket according to claim 7, 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).

9. The high-thickness gap welding device for aircraft reinforcement bracket according to claim 8, 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).

10. The high thickness gap welding device for aircraft reinforcement bracket according to claim 9, 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.

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