Vehicle body welding device for electro-tricycle production and welding method thereof

Abstract

The invention relates to the technical field of welding, and discloses a vehicle body welding device for electro-tricycle production and a welding method thereof.The vehicle body welding device comprises a fixing assembly, the fixing assembly comprises a supporting plate, the bottom of the supporting plate is fixedly connected with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected with a moving shaft. At the moment, a shielding rod can seal and block a through hole in the bottom of a first air guide hose, a sliding plate can be driven by a moving shaft to move downwards due to the fact that a sliding shell cannot continue to move any more, air in the sliding shell is stretched to generate negative pressure, and along with continuous movement of the sliding plate, negative pressure is generated; when the vehicle body rotates, air in the first air guide hose can be sucked into the sliding shell through the air guide branch pipe, the first air guide hose can suck out air in the air guide cavity, then negative pressure is generated in the air guide cavity, at the moment, the ventilation hole can generate adsorption force on the vehicle body due to the negative pressure in the air guide cavity, and transverse deviation in the vehicle body rotating process can be prevented.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a body welding device and a welding method for producing an electric tricycle. Background Art

[0002] In the manufacture of modern transportation vehicles, electric tricycles are increasingly favored by consumers due to their environmental protection, convenience and economy. The structure of an electric tricycle is usually composed of multiple parts such as the frame, body, and wheels, and the welding quality of the body directly affects the strength, durability and safety of the entire vehicle. Therefore, the development of efficient and precise welding equipment and welding methods is crucial to improving the production efficiency and product quality of electric tricycles.

[0003] Before the car body is welded, it is necessary to manually splice the car body and control the clamping assembly to clamp and fix it, and then the robot arm will perform the welding. After welding one side, the car body needs to be rotated for a circle and then welded on the back. During the rotation process, the car body is easily affected by the centrifugal force, which causes dynamic friction with the clamping assembly and causes displacement, thereby affecting the welding accuracy. In response to the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a body welding device for electric tricycle production, comprising a fixing assembly, the fixing assembly comprising a support plate, an electric telescopic rod is fixedly connected to the bottom of the support plate, and a movable shaft is fixedly connected to the output end of the electric telescopic rod;

[0005] A clamping assembly, the clamping assembly comprises an air guide hose 2 and a fixing plate arranged above the support plate, and a spring 3 is sleeved on the outer surface of the fixing plate;

[0006] The shielding component includes a fixing seat 1 arranged above the support plate, the outer wall of the fixing seat 1 is rotatably connected to a rotating block, and the bottom of the rotating block is fixedly connected to a spring 5.

[0007] The top of the sliding plate is fixedly connected to the sliding plate, and the top of the sliding plate is fixedly connected to the limited distance rod. The top of the sliding plate is fixedly connected to a spring 1, and the top of the spring 1 is fixedly connected to a sliding shell. The top of the limited distance rod contacts the top of the inner wall of the sliding shell. The outer surface of the sliding plate is slidably connected to the inner wall of the sliding shell. The outer surface of the sliding shell is slidably connected to the fixed shell. The bottom of the fixed shell is fixedly connected to the top of the supporting plate. The inner wall of the fixed shell is fixedly connected to a shielding rod. The outer wall of the sliding shell is fixedly connected to an air guide hose 1. When the vehicle body is to be fixedly welded, the electric telescopic rod is started to drive the moving shaft downward. The moving shaft will drive the sliding plate to move together during the movement. When the sliding plate moves, the sliding plate will drive the sliding shell as a whole to slide downward in the fixed shell through the spring 1. Due to the large elastic force of the spring 1, the sliding plate will not produce obvious relative sliding with the sliding shell. The sliding shell will squeeze the air inside the fixed shell during the downward movement, and the squeezed air will be pushed into the air guide hose 1.

[0008] Preferably, an air guide hose 1 is fixedly connected to a right-angle fixing plate at one end away from the sliding shell, an air guide cavity is provided inside the right-angle fixing plate, an air vent is provided on the outer wall of the right-angle fixing plate, a fixing rod is slidably connected to the inner wall of the right-angle fixing plate, a lifting plate is fixedly connected to the top of the fixing rod, a spring 2 is fixedly connected to the bottom of the lifting plate, the bottom of the spring 2 is fixedly connected to the top of the right-angle fixing plate, and a shield is fixedly connected to the right side of the lifting plate. Since the elastic force of the spring 1 is large enough, it is difficult for the air guide hose 1 to pass air into the interior of the sliding shell, so the air guide hose 1 will preferentially push the air into the air guide cavity provided in the right-angle fixing plate, and finally be discharged from the air vent, but due to the obstruction of the shield, the air cannot be discharged from the air vent on the lower part of the right-angle fixing plate, and can only be discharged from the air vent on the upper side, so that the upper part of the vehicle body to be clamped can be The air vents on the lower side of the vehicle body are exposed in sequence, and the air vents on the lower side are exposed in sequence, and the dust or particles that may exist on the side of the vehicle body are blown away during the downward movement of the right-angle fixing plate. This design can blow away the dust or particles that may be attached to the clamped part of the vehicle body, thereby preventing the dust or particles from being clamped between the vehicle body and the right-angle fixing plate, causing unstable clamping and affecting the subsequent adsorption effect.

[0009] Preferably, the outer surface of the shielding plate is slidably connected to the inner wall of the right-angle fixed plate, and the outer wall of the sliding shell is fixedly connected with an air guide branch pipe, and the air guide branch pipe is fixedly connected to the outer wall of the air guide hose 1 at one end away from the sliding shell. When the right-angle fixed plate contacts the vehicle body, the sliding shell will also contact the top of the shielding rod, thereby sealing and blocking the through hole at the bottom of the air guide hose 1. As the moving shaft continues to move downward, since the sliding shell can no longer move, the moving shaft will drive the sliding plate to overcome the elastic force of the spring 1 and continue to move downward. In the process of moving downward, the sliding plate will stretch the air inside the sliding shell, thereby causing the sliding Inside the shell, negative pressure is generated in the upper space of the sliding plate. As the sliding plate continues to move, it will suck the air inside the air hose into the sliding shell through the air branch pipe. The air hose will suck out the air in the air cavity, thereby generating negative pressure in the air cavity. At this time, the vent will generate an adsorption force on the vehicle body due to the negative pressure in the air cavity. This design can clamp the vehicle body while applying an adsorption force to the vehicle body, thereby improving the clamping effect of the vehicle body, and the adsorption force can apply a lateral pulling force to the vehicle body to prevent lateral displacement during the rotation of the vehicle body.

[0010] Preferably, the outer surface of the sliding shell is fixedly connected to one end of the air guide hose 2, and the air guide hose 2 is fixedly connected to the outer wall of the right-angle fixed plate at the end away from the sliding shell, the right side of the fixed plate is fixedly connected to the left side of the sliding shell, the outer surface of the fixed plate is slidably connected to the inner wall of the right-angle fixed plate, the right side of the spring three is fixedly connected to the inner wall of the right-angle fixed plate, and the left side of the spring three is fixedly connected to the outer wall of the fixed plate. In the process of the sliding plate moving downward relative to the sliding shell, the sliding plate will also compress the air at its bottom and push the air into the air guide hose 2, and the air guide hose 2 will pass the air into the interior of the right-angle fixed plate. The air passed into the interior of the right-angle fixed plate will first apply a leftward thrust to the right-angle fixed plate itself, and the right-angle fixed plate can compress the spring three by this thrust and move a certain distance to the left, so that the lower part of the right-angle fixed plate can be tightly attached to the vehicle body.

[0011] Preferably, a sealing plate is slidably connected to the inner wall of the right-angle fixed plate, a spring four is fixedly connected to the bottom of the sealing plate, the bottom of the spring four is fixedly connected to a limiting shell, the top of the limiting shell is fixedly connected to the outer wall of the right-angle fixed plate, the outer surface of the sealing plate is slidably connected to the inner wall of the limiting shell, the inner wall of the sealing plate is slidably connected to a limiting rod, the top of the limiting rod is fixedly connected to the outer wall of the right-angle fixed plate, the bottom of the limiting rod is fixedly connected to the inner wall of the limiting shell, and a one-way valve is fixedly connected to the inner wall of the sealing plate. When the right-angle fixed plate moves to the left and can no longer move, in order to prevent the right-angle fixed plate from entering, Too much air in the plate causes excessive pressure and damages the device. Excessive air can push the sealing plate downward and compress spring four. When the sealing plate moves to separate from the right-angle fixing plate, excessive air will be discharged from the gap caused by the separation of the right-angle fixing plate and the sealing plate, thereby preventing excessive pressure. This design can push the right-angle fixing plate to the left so that the lower side of the right-angle fixing plate is in close contact with the side of the vehicle body, thereby improving the adsorption effect of the right-angle fixing plate and preventing air leakage during the adsorption process, which results in ineffective adsorption.

[0012] Preferably, the right side of the fixing seat one is fixedly connected to the left side of the lifting plate, and the bottom of the spring five is fixedly connected to a connecting rotating rod, and the inner wall of the connecting rotating rod is rotatably connected to a fixing column, and the bottom of the fixing column is fixedly connected to the top of the right-angle fixing plate, and the inner wall of the connecting rotating rod is rotatably connected to a fixing seat two, and the bottom of the fixing seat two is fixedly connected to a protective plate, and the outer surface of the protective plate is slidably connected to the inner wall of the right-angle fixing plate. When the lifting plate moves upward, it will drive the rotating block to move upward together with the fixing seat one. During the movement of the rotating block, it will drive the connecting rotating rod to rotate with the fixing column as the center through the spring five. During the rotation, the connecting rotating rod will push the fixing seat two downward, thereby driving the protective plate to move downward to cover the adsorption pad on the outer wall of the right-angle fixing plate. When the protective plate moves to the point where it can no longer move, as the rotating block continues to be driven upward, the rotating block will stretch the spring five to continue to move upward. This design can protect and cover the adsorption pad on the outer wall of the right-angle fixing plate through the protective plate to prevent splashing sparks from hitting the adsorption pad during welding and causing damage to the adsorption pad.

[0013] A welding method for a body welding device for producing an electric tricycle comprises the following steps:

[0014] S1: When using this device, first install the device to the designated position, then start the electric telescopic rod when you want to perform fixed welding, and the vent will spray air to blow away the dust or particles that may exist on the surface of the vehicle body;

[0015] S2: When the right-angle fixing plate contacts the vehicle body, the sliding shell will also contact the top of the shielding rod, sealing and blocking the through hole at the bottom of the air guide hose. As the sliding plate continues to move, the air hole will generate an adsorption force on the vehicle body.

[0016] S3: When the sliding plate moves downward relative to the sliding shell, the right-angle fixing plate will be pushed to the left and closely attached to the side of the vehicle body. When the lifting plate moves upward, the protection plate will move downward to block the adsorption pad.

[0017] The present invention has the following beneficial effects:

[0018] When the cam is in contact with the vehicle body, the sliding shell will contact the top of the shielding rod, thereby sealing and blocking the through hole at the bottom of the air guide hose 1. As the moving shaft continues to move downward, since the sliding shell can no longer move, the moving shaft will drive the sliding plate to overcome the elastic force of the spring 1 and continue to move downward. In the process of the sliding plate moving downward, the air inside the sliding shell will be stretched, thereby generating negative pressure in the upper space of the sliding plate inside the sliding shell. As the sliding plate continues to move, the air inside the air guide hose 1 will be sucked into the sliding shell through the air guide branch pipe, and the air guide hose 1 will suck out the air in the air guide cavity, thereby generating negative pressure in the air guide cavity. At this time, the vent hole will generate an adsorption force on the vehicle body due to the negative pressure in the air guide cavity. This design can not only clamp the vehicle body, but also apply an adsorption force to the vehicle body, thereby improving the clamping effect on the vehicle body, and the adsorption force can apply a lateral pulling force to the vehicle body, thereby preventing lateral displacement during the rotation of the vehicle body.

[0019] 2. When the vehicle body is to be fixedly welded, the present invention starts the electric telescopic rod to drive the moving shaft to move downward. The moving shaft will drive the sliding plate to move together during the movement. When the sliding plate moves, the sliding shell will be driven by the spring to slide downward in the fixed shell as a whole. Since the elastic force of the spring is relatively large, the sliding plate will not have obvious relative sliding with the sliding shell. The sliding shell will squeeze the air inside the fixed shell during the downward movement, and the squeezed air will be pushed into the air guide hose. Since the elastic force of the spring is large enough, it is difficult for the air guide hose to pass the air into the interior of the sliding shell through the air guide branch pipe. Therefore, the air guide hose will first push the air into the air guide cavity opened in the right-angle fixed plate, and finally be discharged from the vent. However, due to the obstruction of the shield, the air cannot be discharged from the vent on the lower side of the right-angle fixed plate, and can only be discharged from the vent on the upper side. The air vents on the lower side of the vehicle body are exposed in sequence, and the air vents on the lower side are exposed in sequence, and the dust or particles that may exist on the side of the vehicle body are blown away during the downward movement of the right-angle fixing plate. This design can blow away the dust or particles that may be attached to the clamped part of the vehicle body, thereby preventing dust or particles from being clamped between the vehicle body and the right-angle fixing plate, causing unstable clamping and affecting the subsequent adsorption effect.

[0020] 3. In the process of the sliding plate moving downward relative to the sliding shell, the sliding plate will also compress the air at its bottom and push the air into the air guide hose 2. The air guide hose 2 will pass the air into the interior of the right-angle fixing plate. Since the elastic force of the spring 4 is greater than the elastic force of the spring 3, the air passing into the interior of the right-angle fixing plate will first apply a leftward thrust to the right-angle fixing plate itself. The right-angle fixing plate can compress the spring 3 through the thrust and move to the left a certain distance, thereby making the lower part of the right-angle fixing plate close to the vehicle body. When the right-angle fixing plate moves to the left to the point where it can no longer move, After the movement, in order to prevent excessive air from entering the right-angle fixing plate and causing excessive pressure, thereby damaging the device, excessive air can push the sealing plate downward and compress spring four. When the sealing plate moves to separate from the right-angle fixing plate, excessive air will be discharged from the gap caused by the separation of the right-angle fixing plate and the sealing plate, thereby preventing the pressure from being too high. This design can push the right-angle fixing plate to the left so that the lower side of the right-angle fixing plate is in close contact with the side of the vehicle body, thereby improving the adsorption effect of the right-angle fixing plate and preventing air leakage during the adsorption process, which would result in ineffective adsorption.

[0021] 4. In the process of the lifting plate moving upward, the present invention will drive the rotating block to move upward together with the fixed seat 1. In the process of the rotating block moving, it will drive the connecting rotating rod to rotate with the fixed column as the center through the spring 5. In the process of rotation, the connecting rotating rod will push the fixed seat 2 downward, thereby driving the protective plate to move downward to block the adsorption pad on the outer wall of the right-angle fixed plate. When the protective plate moves to the point where it can no longer move, as the rotating block continues to be driven upward, the rotating block will stretch the spring 5 to continue to move upward. This design can protect and block the adsorption pad on the outer wall of the right-angle fixed plate through the protective plate to prevent sparks from hitting the adsorption pad during welding and causing damage to the adsorption pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the internal cross-sectional structure of the fixed shell of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall structure of the sliding plate of the present invention;

[0026] Figure 4 This is a schematic diagram of the overall structure of the second air guide hose of the present invention;

[0027] Figure 5 For the present invention Figure 4 A is a schematic diagram of the enlarged structure of the middle part;

[0028] Figure 6 This is a schematic diagram of the overall structure of the protection plate of the present invention;

[0029] Figure 7 For the present invention Figure 1 Schematic diagram of the enlarged structure of B;

[0030] Figure 8 It is a schematic diagram of the working process of the present invention.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] In the figure: 1, fixed assembly; 101, support plate; 102, electric telescopic rod; 103, moving shaft; 104, sliding plate; 105, distance limiting rod; 106, spring 1; 107, sliding shell; 108, fixed shell; 109, shielding rod; 110, air guide hose 1; 111, right angle fixed plate; 1111, air guide cavity; 1112, vent hole; 112, lifting plate; 1121, fixed rod; 113, spring 2; 114, Shield; 115, air guide branch; 2, clamping assembly; 201, air guide hose 2; 202, fixing plate; 203, spring 3; 204, sealing plate; 205, spring 4; 206, limit shell; 207, limit rod; 208, one-way valve; 3, shielding assembly; 301, fixing seat 1; 302, rotating block; 303, spring 5; 304, connecting rotating rod; 305, fixing column; 306, fixing seat 2; 307, protective plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] For example, see Figure 1 - Figure 3 The present invention is a body welding device for electric tricycle production, comprising a fixing assembly 1, the fixing assembly 1 comprising a support plate 101, an electric telescopic rod 102 is fixedly connected to the bottom of the support plate 101, and a movable shaft 103 is fixedly connected to the output end of the electric telescopic rod 102;

[0035] The clamping assembly 2 includes an air guide hose 201 and a fixing plate 202 disposed above the support plate 101, and a spring 3 203 is sleeved on the outer surface of the fixing plate 202;

[0036] The shielding component 3 includes a fixing seat 301 arranged above the support plate 101, the outer wall of the fixing seat 301 is rotatably connected to a rotating block 302, and the bottom of the rotating block 302 is fixedly connected to a spring 5 303.

[0037] The outer surface of the moving shaft 103 is slidably connected to the inner wall of the support plate 101, the top of the moving shaft 103 is fixedly connected to a sliding plate 104, the top of the sliding plate 104 is fixedly connected to a limited distance rod 105, the top of the sliding plate 104 is fixedly connected to a spring 106, the top of the spring 106 is fixedly connected to a sliding shell 107, the top of the limited distance rod 105 contacts the top of the inner wall of the sliding shell 107, the outer surface of the sliding plate 104 is slidably connected to the inner wall of the sliding shell 107, the outer surface of the sliding shell 107 is slidably connected to a fixed shell 108, the bottom of the fixed shell 108 is fixedly connected to the top of the support plate 101, the inner wall of the fixed shell 108 is fixedly connected to a shielding rod 109, and the sliding shell An air guide hose 110 is fixedly connected to the outer wall of 107. When the vehicle body is to be fixedly welded, the electric telescopic rod 102 is started to drive the movable shaft 103 to move downward. The movable shaft 103 will drive the sliding plate 104 to move together during the movement. When the sliding plate 104 moves, it will drive the sliding shell 107 as a whole to slide downward in the fixed shell 108 through the spring 106. Since the elastic force of the spring 106 is relatively large, the sliding plate 104 will not produce obvious relative sliding with the sliding shell 107. The sliding shell 107 will squeeze the air inside the fixed shell 108 during the downward movement, and the squeezed air will be pushed into the air guide hose 110.

[0038] The air guide hose 110 is fixedly connected to a right angle fixing plate 111 at one end away from the sliding shell 107, an air guide cavity 1111 is provided inside the right angle fixing plate 111, an air vent 1112 is provided on the outer wall of the right angle fixing plate 111, a fixing rod 1121 is slidably connected to the inner wall of the right angle fixing plate 111, a lifting plate 112 is fixedly connected to the top of the fixing rod 1121, a spring 2 113 is fixedly connected to the bottom of the lifting plate 112, and the bottom of the spring 2 113 is fixedly connected to the top of the right angle fixing plate 111 , a shield plate 114 is fixedly connected to the right side of the lifting plate 112. Since the elastic force of the spring 106 is large enough, it is difficult for the air guide hose 110 to pass the air into the interior of the sliding shell 107. Therefore, the air guide hose 110 will first push the air into the air guide cavity 1111 opened inside the right-angle fixing plate 111, and finally discharge it from the vent 1112. However, due to the obstruction of the shield plate 114, the air cannot be discharged from the vent 1112 on the lower part of the right-angle fixing plate 111, and can only be discharged from the vent 1112 on the upper side. The lifting plate 112 will drive the shield plate 114 to move upward together with it, and thus will no longer block the vent holes 1112 on the lower side of the right-angled fixing plate 111, and the vent holes 1112 exposed on the lower side will blow away the dust or particles that may exist on the side of the vehicle body during the downward movement of the right-angled fixing plate 111. This design can blow away the dust or particles that may be attached to the clamped part of the vehicle body, and prevent the dust or particles from being clamped between the vehicle body and the right-angled fixing plate 111, causing unstable clamping and affecting the subsequent adsorption effect.

[0039] The outer surface of the shielding plate 114 is slidably connected to the inner wall of the right-angle fixing plate 111, and the outer wall of the sliding shell 107 is fixedly connected with an air guide branch pipe 115. The air guide branch pipe 115 is fixedly connected to the outer wall of the air guide hose 110 at the end away from the sliding shell 107. When the right-angle fixing plate 111 contacts the vehicle body, the sliding shell 107 will also contact the top of the shielding rod 109, thereby sealing and blocking the through hole at the bottom of the air guide hose 110. As the moving shaft 103 continues to move downward, since the sliding shell 107 can no longer move, the moving shaft 103 will drive the sliding plate 104 to overcome the elastic force of the spring 106 and continue to move downward. The sliding plate 104 will stretch the air inside the sliding shell 107 during the downward movement. , thereby causing negative pressure to be generated in the interior of the sliding shell 107 and the upper space of the sliding plate 104. As the sliding plate 104 continues to move, it will suck the air inside the air hose 110 into the sliding shell 107 through the air branch pipe 115. The air hose 110 will suck out the air in the air chamber 1111, thereby causing negative pressure to be generated in the air chamber 1111. At this time, the air vent 1112 will generate an adsorption force on the vehicle body due to the negative pressure in the air chamber 1111. This design can apply an adsorption force to the vehicle body while clamping the vehicle body, thereby improving the clamping effect on the vehicle body, and the adsorption force can apply a lateral pulling force to the vehicle body to prevent lateral displacement during the rotation of the vehicle body.

[0040] For example 2, please refer to Figure 4 - Figure 8 The present invention is a body welding device for electric tricycle production. On the basis of Example 1, the outer surface of the sliding shell 107 is fixedly connected to one end of the second air guide hose 201, and the second air guide hose 201 is fixedly connected to the outer wall of the right-angle fixing plate 111 at the end away from the sliding shell 107. The right side of the fixing plate 202 is fixedly connected to the left side of the sliding shell 107, and the outer surface of the fixing plate 202 is slidably connected to the inner wall of the right-angle fixing plate 111. The right side of the spring 3 203 is fixedly connected to the inner wall of the right-angle fixing plate 111, and the left side of the spring 3 203 is fixedly connected to the outer wall of the fixing plate 202. Fixed connection, when the sliding plate 104 moves downward relative to the sliding shell 107, the sliding plate 104 will also compress the air at its bottom and push the air into the air guide hose 201, and the air guide hose 201 will pass the air into the interior of the right-angle fixed plate 111. The air passed into the interior of the right-angle fixed plate 111 will first apply a leftward thrust to the right-angle fixed plate 111 itself, and the right-angle fixed plate 111 can compress the spring three 203 through the thrust and move a certain distance to the left, so that the lower part of the right-angle fixed plate 111 can be tightly attached to the vehicle body.

[0041] The inner wall of the right-angle fixed plate 111 is slidably connected with a sealing plate 204, and a spring four 205 is fixedly connected to the bottom of the sealing plate 204. The bottom of the spring four 205 is fixedly connected to a limiting shell 206, and the top of the limiting shell 206 is fixedly connected to the outer wall of the right-angle fixed plate 111. The outer surface of the sealing plate 204 is slidably connected to the inner wall of the limiting shell 206. The inner wall of the sealing plate 204 is slidably connected to a limiting rod 207, and the top of the limiting rod 207 is fixedly connected to the outer wall of the right-angle fixed plate 111, and the bottom of the limiting rod 207 is fixedly connected to the inner wall of the limiting shell 206. The inner wall of the sealing plate 204 is fixedly connected with a one-way valve 208. When the right-angle fixed plate 111 moves to the left until it can no longer move, After the movement, in order to prevent excessive air from entering the right-angle fixing plate 111 and causing excessive pressure, thereby causing damage to the device, excessive air can push the sealing plate 204 downward and compress the spring four 205. When the sealing plate 204 moves to separate from the right-angle fixing plate 111, excessive air will be discharged from the gap caused by the separation of the right-angle fixing plate 111 and the sealing plate 204, thereby preventing the pressure from being too high. This design can push the right-angle fixing plate 111 to the left so that the lower side of the right-angle fixing plate 111 is in close contact with the side of the vehicle body, thereby improving the adsorption effect of the right-angle fixing plate 111 and preventing air leakage during the adsorption process, which results in ineffective adsorption.

[0042] The right side of the fixing seat 1 301 is fixedly connected to the left side of the lifting plate 112, the bottom of the spring 5 303 is fixedly connected to the connecting rod 304, the inner wall of the connecting rod 304 is rotatably connected to the fixing column 305, the bottom of the fixing column 305 is fixedly connected to the top of the right-angle fixing plate 111, the inner wall of the connecting rod 304 is rotatably connected to the fixing seat 2 306, the bottom of the fixing seat 2 306 is fixedly connected to the protection plate 307, the outer surface of the protection plate 307 is slidably connected to the inner wall of the right-angle fixing plate 111, when the lifting plate 112 moves upward, it will drive the rotating block 302 to move upward together through the fixing seat 1 301, and when the rotating block 302 moves, it will move upward together with the fixing seat 1 301. Spring five 303 drives the connecting rod 304 to rotate with the fixed column 305 as the center. During the rotation process, the connecting rod 304 will push the fixed seat two 306 downward, thereby driving the protection plate 307 to move downward, and shielding the adsorption pad on the outer wall of the right-angle fixed plate 111. When the protection plate 307 moves to the point where it can no longer move, as the rotating block 302 continues to be driven upward, the rotating block 302 will stretch the spring five 303 so that it can continue to move upward. This design can protect and shield the adsorption pad on the outer wall of the right-angle fixed plate 111 through the protection plate 307 to prevent sparks from hitting the adsorption pad during welding and causing damage to the adsorption pad.

[0043] The welding method of the vehicle body welding device comprises the following steps:

[0044] S1: When using the device, first install the device to a designated position, and then start the electric telescopic rod 102 when performing fixed welding, and the vent 1112 will spray air to blow away dust or particles that may exist on the surface of the vehicle body;

[0045] S2: When the right-angle fixing plate 111 contacts the vehicle body, the sliding shell 107 also contacts the top of the shielding rod 109, sealing and blocking the through hole at the bottom of the air guide hose 110. As the sliding plate 104 continues to move, the vent hole 1112 generates an adsorption force on the vehicle body.

[0046] S3: When the sliding plate 104 moves downward relative to the sliding shell 107, the right-angle fixing plate 111 will be pushed to the left to fit tightly against the side of the vehicle body. When the lifting plate 112 moves upward, the protection plate 307 will move downward to block the adsorption pad.

[0047] A specific application of this embodiment is:

[0048] When using the device, first install the device to the specified position, and then when the vehicle body is to be fixed and welded, start the electric telescopic rod 102 to drive the moving shaft 103 to move downward. The moving shaft 103 will drive the sliding plate 104 to move together during the movement. When the sliding plate 104 moves, the sliding shell 107 as a whole will slide downward in the fixed shell 108 through the spring 106. Due to the large elastic force of the spring 106, the sliding plate 104 will not have obvious relative sliding with the sliding shell 107. In the process of moving downward, the air inside the fixed shell 108 will be squeezed, and the squeezed air will be pushed into the air guide hose 110. Since the elastic force of the spring 106 is large enough, it is difficult for the air guide hose 110 to pass the air into the interior of the sliding shell 107 through the air guide branch pipe 115. Therefore, the air guide hose 110 will first push the air into the air guide cavity 1111 opened inside the right-angle fixed plate 111, and finally be discharged from the vent hole 1112. However, due to the obstruction of the shield plate 114, the air cannot be discharged from the lower side of the right-angle fixed plate 111. The air is discharged from the vent holes 1112 on the upper side only, so that the dust and particles that may exist on the upper side of the clamped part of the vehicle body can be blown away. In the process of the sliding shell 107 moving downward, the right-angle fixing plate 111 will also move downward therewith. In the process of the right-angle fixing plate 111 moving downward, the fixing rod 1121 will first contact the vehicle body. As the right-angle fixing plate 111 continues to move downward, the fixing rod 1121 will push the lifting plate 112 upward and stretch the spring 113, and the lifting plate During the movement, the shield plate 114 is driven to move upward, and the vent holes 1112 on the lower side of the right-angle fixing plate 111 are no longer blocked. The vent holes 1112 exposed in sequence on the lower side can blow away the dust or particles that may exist on the side of the vehicle body during the downward movement of the right-angle fixing plate 111. This design can blow away the dust or particles that may be attached to the clamped part of the vehicle body, and prevent the dust or particles from being clamped between the vehicle body and the right-angle fixing plate 111, causing unstable clamping and affecting the subsequent adsorption effect.

[0049] When the right-angle fixing plate 111 contacts the vehicle body, the sliding shell 107 will also contact the top of the shielding rod 109, thereby sealing and blocking the through hole at the bottom of the air guide hose 110. As the moving shaft 103 continues to move downward, since the sliding shell 107 can no longer move, the moving shaft 103 will drive the sliding plate 104 to overcome the elastic force of the spring 106 and continue to move downward. The sliding plate 104 will stretch the air inside the sliding shell 107 during the downward movement, thereby generating negative pressure inside the sliding shell 107 and the upper space of the sliding plate 104. As the sliding plate 104 continues to move downward, the sliding shell 107 will be pressed downward to release the air. When the vehicle body is moved continuously, the air in the air hose 110 is sucked into the sliding shell 107 through the air branch pipe 115, and the air hose 110 sucks out the air in the air cavity 1111, thereby generating negative pressure in the air cavity 1111. At this time, the vent hole 1112 generates an adsorption force on the vehicle body due to the negative pressure in the air cavity 1111. This design can apply an adsorption force to the vehicle body while clamping the vehicle body, thereby improving the clamping effect on the vehicle body, and the adsorption force can apply a lateral pulling force to the vehicle body, thereby preventing lateral displacement during the rotation of the vehicle body.

[0050] In the process of the sliding plate 104 moving downward relative to the sliding shell 107, the sliding plate 104 will also compress the air at its bottom and push the air into the air guide hose 201, and the air guide hose 201 will pass the air into the interior of the right-angle fixing plate 111. Since the elastic force of the spring 4 205 is greater than the elastic force of the spring 3 203, the air passing into the interior of the right-angle fixing plate 111 will first apply a leftward thrust to the right-angle fixing plate 111 itself, and the right-angle fixing plate 111 can compress the spring 3 203 through the thrust and move a certain distance to the left, thereby making the lower part of the right-angle fixing plate 111 close to the vehicle body, and when the right-angle fixing plate 111 moves to the left to the point where it cannot move, the right-angle fixing plate 111 will move to the left to the point where it cannot move. After the movement, in order to prevent excessive air from entering the right-angle fixing plate 111 and causing excessive pressure, thereby damaging the device, the excessive air can push the sealing plate 204 downward and compress the spring 205. When the sealing plate 204 moves to separate from the right-angle fixing plate 111, the excessive air will be discharged from the gap formed by the separation of the right-angle fixing plate 111 and the sealing plate 204, thereby preventing the pressure from being too high. This design can push the right-angle fixing plate 111 to the left so that the lower side of the right-angle fixing plate 111 is in close contact with the side of the vehicle body, thereby improving the adsorption effect of the right-angle fixing plate 111 and preventing air leakage during the adsorption process, thereby preventing ineffective adsorption.

[0051] When the lifting plate 112 moves upward, it will drive the rotating block 302 to move upward through the fixed seat 1 301. When the rotating block 302 moves, it will drive the connecting rod 304 to rotate with the fixed column 305 as the center through the spring 5 303. During the rotation, the connecting rod 304 will push the fixed seat 2 306 downward, thereby driving the protective plate 307 to move downward, thereby covering the adsorption pad on the outer wall of the right-angle fixed plate 111. When the protective plate 307 moves to the point where it can no longer move, as the rotating block 302 continues to be driven upward, the rotating block 302 will stretch the spring 5 303 to continue to move upward. This design can protect and cover the adsorption pad on the outer wall of the right-angle fixed plate 111 through the protective plate 307 to prevent sparks from hitting the adsorption pad during welding and causing damage to the adsorption pad.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A body welding device for producing an electric tricycle, comprising a fixing assembly (1), wherein the fixing assembly (1) comprises a support plate (101), wherein the bottom of the support plate (101) is fixedly connected to an electric telescopic rod (102), and the output end of the electric telescopic rod (102) is fixedly connected to a movable shaft (103), wherein: Also includes: A clamping assembly (2), the clamping assembly (2) comprising a second air guide hose (201) and a fixing plate (202) arranged above the support plate (101), the outer surface of the fixing plate (202) being sleeved with a third spring (203); A shielding assembly (3), the shielding assembly (3) comprising a fixing seat (301) arranged above a support plate (101), the outer wall of the fixing seat (301) being rotatably connected to a rotating block (302), and the bottom of the rotating block (302) being fixedly connected to a spring (303).

2. The body welding device for electric tricycle production according to claim 1 is characterized in that: The outer surface of the movable shaft (103) is slidably connected to the inner wall of the support plate (101); the top of the movable shaft (103) is fixedly connected to a sliding plate (104); the top of the sliding plate (104) is fixedly connected to a distance limiting rod (105); the top of the sliding plate (104) is fixedly connected to a spring (106); the top of the spring (106) is fixedly connected to a sliding shell (107); the top of the distance limiting rod (105) contacts the top of the inner wall of the sliding shell (107); the outer surface of the sliding plate (104) is slidably connected to the inner wall of the sliding shell (107); the outer surface of the sliding shell (107) is slidably connected to a fixed shell (108); the bottom of the fixed shell (108) is fixedly connected to the top of the support plate (101); the inner wall of the fixed shell (108) is fixedly connected to a shielding rod (109); and the outer wall of the sliding shell (107) is fixedly connected to an air guide hose (110).

3. The body welding device for electric tricycle production according to claim 2 is characterized in that: The air guide hose 1 (110) is fixedly connected to a right angle fixing plate (111) at one end away from the sliding shell (107); an air guide cavity (1111) is provided inside the right angle fixing plate (111); an air vent (1112) is provided on the outer wall of the right angle fixing plate (111); a fixing rod (1121) is slidably connected to the inner wall of the right angle fixing plate (111); a lifting plate (112) is fixedly connected to the top of the fixing rod (1121); a spring 2 (113) is fixedly connected to the bottom of the lifting plate (112); the bottom of the spring 2 (113) is fixedly connected to the top of the right angle fixing plate (111); and a shielding plate (114) is fixedly connected to the right side of the lifting plate (112).

4. The body welding device for electric tricycle production according to claim 3 is characterized in that: The outer surface of the shielding plate (114) is slidably connected to the inner wall of the right-angle fixing plate (111), and the outer wall of the sliding shell (107) is fixedly connected with an air guide branch pipe (115), and the air guide branch pipe (115) is fixedly connected to the outer wall of the air guide hose (110) at one end away from the sliding shell (107).

5. The body welding device for electric tricycle production according to claim 4, characterized in that: The outer surface of the sliding shell (107) is fixedly connected to one end of the second air guide hose (201); the second air guide hose (201) is fixedly connected to the outer wall of the right-angle fixing plate (111) at the end away from the sliding shell (107); the right side of the fixing plate (202) is fixedly connected to the left side of the sliding shell (107); the outer surface of the fixing plate (202) is slidably connected to the inner wall of the right-angle fixing plate (111); the right side of the spring (203) is fixedly connected to the inner wall of the right-angle fixing plate (111); and the left side of the spring (203) is fixedly connected to the outer wall of the fixing plate (202).

6. The body welding device for electric tricycle production according to claim 5, characterized in that: The inner wall of the right-angle fixed plate (111) is slidably connected to a sealing plate (204), the bottom of the sealing plate (204) is fixedly connected to a spring four (205), the bottom of the spring four (205) is fixedly connected to a limiting shell (206), the top of the limiting shell (206) is fixedly connected to the outer wall of the right-angle fixed plate (111), the outer surface of the sealing plate (204) is slidably connected to the inner wall of the limiting shell (206), the inner wall of the sealing plate (204) is slidably connected to a limiting rod (207), the top of the limiting rod (207) is fixedly connected to the outer wall of the right-angle fixed plate (111), the bottom of the limiting rod (207) is fixedly connected to the inner wall of the limiting shell (206), and the inner wall of the sealing plate (204) is fixedly connected to a one-way valve (208).

7. The body welding device for electric tricycle production according to claim 6, characterized in that: The right side of the fixing seat 1 (301) is fixedly connected to the left side of the lifting plate (112); the bottom of the spring 5 (303) is fixedly connected to a connecting rod (304); the inner wall of the connecting rod (304) is rotatably connected to a fixing column (305); the bottom of the fixing column (305) is fixedly connected to the top of the right-angle fixing plate (111); the inner wall of the connecting rod (304) is rotatably connected to a fixing seat 2 (306); the bottom of the fixing seat 2 (306) is fixedly connected to a protection plate (307); the outer surface of the protection plate (307) is slidably connected to the inner wall of the right-angle fixing plate (111).

8. A welding method for a body welding device for producing an electric tricycle, using the body welding device as claimed in claim 7, characterized in that: The steps include: S1: When using the device, first install the device at a designated location, and then start the electric telescopic rod (102) when performing fixed welding, and the vent (1112) will spray air to blow away dust or particles that may exist on the surface of the vehicle body; S2: When the right-angle fixing plate (111) contacts the vehicle body, the sliding shell (107) will also contact the top of the shielding rod (109), sealing and blocking the through hole at the bottom of the air guide hose (110). As the sliding plate (104) continues to move, the vent hole (1112) will generate an adsorption force on the vehicle body; S3: When the sliding plate (104) moves downward relative to the sliding shell (107), the right-angle fixing plate (111) will be pushed to the left to be in close contact with the side of the vehicle body, and when the lifting plate (112) moves upward, the protection plate (307) will move downward to block the adsorption pad.

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