Fixing and welding device for automobile anti-collision beam

Abstract

The invention provides an automobile anti-collision beam fixing and welding device, and relates to the technical field of welding devices.The automobile anti-collision beam fixing and welding device comprises a bottom plate, an adjusting assembly used for adjusting the welding position is arranged on the upper surface of the bottom plate, an extending plate is arranged on one side of the bottom plate, and a fixing assembly used for fixing the position of an anti-collision beam body is arranged above the extending plate; a finger air cylinder used for fixing a connecting piece is fixedly installed on one side of the adjusting assembly, and a welding assembly used for automatic welding is fixedly installed on the upper side of the adjusting assembly. A driving motor located in the middle is started, a driving wheel rotates, a transmission belt obtains power, then driven wheels on the two sides are driven, the driven wheels on the two sides drive a rotating wheel to rotate on a rod body of a connecting rod, a welding gun rotates along with the rotating wheel, and therefore the welding gun can surround the welding position of the connecting piece by a circle; and it is ensured that full-automatic welding can be achieved without overturning when the connecting piece is fixed, and the welding efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to a fixing welding device for an automobile anti-collision beam. Background Art

[0002] The automobile anti-collision beam is a structure used to reduce the impact energy absorbed when the vehicle is hit. In order to place the anti-collision beam on the car, a welding device is needed to weld the anti-collision beam and the connecting parts together for subsequent installation. For example, the patent announcement number is CN220739934U, which is an automatic welding device for automobile anti-collision beams. The utility model provides an automatic welding device for automobile anti-collision beams that can perform double-station welding on automobile anti-collision beams and improve welding efficiency. An automatic welding device for automobile anti-collision beams includes a base, a motor, a screw rod, and a connecting mobile mechanical welding hand. The motor is connected to the left side of the base, and a screw rod is connected to the motor output shaft. The screw rod is rotatably connected to the base, and a connecting mobile mechanical welding hand is threadedly connected to the screw rod. The connecting mobile mechanical welding hand is slidably connected to the base. The utility model starts the motor to drive the screw rod to rotate, so that the connecting mobile mechanical welding hand moves to the right part of the base to weld another automobile anti-collision beam, thereby achieving the effect of being able to perform double-station welding on automobile anti-collision beams and improving welding efficiency.

[0003] However, although the above-mentioned automatic welding device can automatically move to the required welding position for automatic welding, if the anti-collision beam and the connecting piece cannot be fixed in position during the welding process, the weld spacing or placement position therebetween will deviate, thereby reducing the welding accuracy. However, if the existing automatic welding device is equipped with a fixed structure, and welding needs to be performed around the connecting piece when welding the anti-collision beam, the fixed structure will be arranged around the welded piece, thereby interfering with the automatic movement of the welding gun position. For this reason, the present application designs a fixed welding device for automobile anti-collision beams. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a vehicle anti-collision beam fixing welding device, which solves the problem that after using a fixed structure to fix the weldment, it will interfere with the automatic movement of the welding gun, resulting in the existing automatic welding device needing to manually flip the surface of the weldment during welding, resulting in inability to fully automatically weld.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A device for fixing and welding an automobile anti-collision beam comprises a base plate, an upper surface of the base plate is provided with an adjustment component for adjusting a welding position, an extension plate is provided on one side of the base plate, a fixing component for fixing a main body position of the anti-collision beam is provided above the extension plate, a finger cylinder for fixing a connecting piece is fixedly installed on one side of the adjustment component, and a welding component for automatic welding is fixedly installed on the upper side of the adjustment component.

[0007] Preferably, the adjustment assembly includes an electric slide rail, which is arranged on the upper surface of the base plate, a first slide seat is slidably installed on the upper side of the electric slide rail, second slide seats are slidably installed on both sides above the first slide seat, the first slide seat and the second slide seat move alternately, a connecting rod for installing the welding assembly is fixedly installed on the upper surface of the second slide seat, and a finger cylinder is fixedly installed on one end of the connecting rod.

[0008] Preferably, a first motor is fixedly mounted on one side of the first slide, a forward and reverse screw rod is fixedly mounted on the output end of the first motor, and screw holes are penetrated through the insides of the two second slides, and the screw holes cooperate with the threads of the forward and reverse screw rods.

[0009] Preferably, the fixing assembly includes a lifting platform for adjusting the height of the anti-collision beam body, a fixed clamp is fixedly installed on one side of the lifting platform, a boss is fixedly installed on the other side of the lifting platform, a groove is opened inside the boss, a movable seat is movably arranged inside the groove, and a movable clamp is fixedly installed on the upper end of the movable seat.

[0010] Preferably, a second motor is fixedly mounted on one side of the groove, an adjusting screw is fixedly mounted on the output end of the second motor, and the adjusting screw is threadably matched with the movable seat.

[0011] Preferably, the welding assembly includes a rotating wheel, which is rotatably mounted on the connecting rod body, a sealing plug rod is fixedly mounted on the outer side of the rotating wheel, a lifting seat is sleeved on the outer side of the sealing plug rod, an extension frame is fixedly mounted on the upper end of the lifting seat, a slide groove is provided at one end of the extension frame, a through socket is slidably mounted inside the slide groove through bolts, a flip seat is inserted inside the through socket, and a welding gun is rotatably mounted inside the flip seat.

[0012] Preferably, a movable groove is provided on the lower surface of the extension frame, a support rod is slidably installed inside the movable groove, the support rod is a combination of a screw rod and a screw sleeve, and a limiting pulley for fitting the connecting piece is rotatably installed at the bottom of the support rod.

[0013] Preferably, a mounting frame is fixedly mounted on the upper surfaces of the second slide seats on both sides, extension rods are fixedly mounted on both sides of the mounting frame, and a mounting seat is sleeved between the extension rods on both sides.

[0014] Preferably, a driven wheel is fixedly installed on the rear side of the rotating wheels on both sides, a column is fixedly installed in the middle of the mounting seat, a movable sleeve is movably installed on the column body through a tensioning spring, a tensioning wheel is rotatably installed on one side of the movable sleeve, a driving motor is fixedly installed on the lower side of the column, a driving wheel is fixedly installed on the output end of the driving motor, and the driven wheels on both sides are connected to the tensioning wheel and the driving wheel through a transmission belt.

[0015] Preferably, a compressor is fixedly mounted on one side of the mounting seat, the compressor is connected to a pressure tank, a pressure relief valve is fixedly mounted on the upper end of the pressure tank, and the pressure tank is communicated with the lower ends of the lifting seats on both sides through a delivery pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The height position of the anti-collision beam body can be adjusted by starting the lifting platform so that the height between the anti-collision beam body and the connecting piece matches. Then, the second motor can be started to drive the adjusting screw to rotate, and the adjusting screw and the thread of the moving seat cooperate to make the moving seat move to one side, so that the moving splint moves and cooperates with the fixed splint to fix and clamp the internal anti-collision beam body to avoid subsequent movement during welding.

[0018] 2. In order to enable the welding guns on both sides to revolve around the welding position on the corresponding side, the driving motor located in the middle is started and the driving wheel is rotated to make the transmission belt powered, and then the driven wheels on both sides are driven, so that the driven wheels on both sides drive the rotating wheels to rotate on the connecting rod body, and the welding guns rotate accordingly, so that the welding guns can revolve around the welding position of the connecting piece, ensuring that the connecting piece can be fully automatically welded without flipping when it is fixed, greatly improving the welding efficiency.

[0019] 3. By fitting the limiting pulley to the surface of the connecting part and under the support limit of the support rod, the lowest downward position of the welding gun can be limited to ensure that the welding gun can be adjusted to the welding position when it is downward, thereby ensuring stability during welding.

[0020] 4. In order to ensure that the welding gun can fit the welding position when it goes around the welding point and avoid the situation of false welding, the compressor is started to deliver air through the pressure tank and the delivery pipe to the inside of the lifting seat and below the sealing plug rod, wherein the sealing plug rod is fixedly installed on the surface of the rotating wheel, so that the pressure below the lifting seat is greater than that above, pulling the lifting seat downward, cooperating with the rotation of the welding gun and the support of the limit pulley, so that the welding gun can move close to the welding point;

[0021] When welding corners, the rotation of the welding gun will be affected by the interference of the corner. In order to prevent the excessive pressure under the lifting seat from causing jamming, a pressure relief valve is provided at the upper end of the pressure tank to discharge part of the current gas to reduce the pressure, so that the welding gun can move in line with the corner, and then the compressor is used to replenish gas again to ensure that the welding gun moves down close to the welding position. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 is a schematic diagram of a three-dimensional structure from another viewing angle of the present invention;

[0024] Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0025] Figure 4 yes Figure 3 Schematic diagram of the three-dimensional structure of the cross section at AA in the middle;

[0026] Figure 5 yes Figure 3 Schematic diagram of the three-dimensional structure of the cross section at BB in the middle;

[0027] Figure 6 yes Figure 3 Schematic diagram of the three-dimensional structure of the cross section at CC;

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the fixed component;

[0029] Figure 8 is a schematic diagram of the three-dimensional structure of the regulating component;

[0030] Fig. 9 It is a three-dimensional structural schematic diagram of the welded assembly;

[0031] Fig.10 It is a schematic diagram of the top view structure of the welding assembly;

[0032] Fig.11 yes Fig.10 Schematic diagram of the three-dimensional structure of the cross section at DD in the middle;

[0033] Fig.12 It is a schematic diagram of the front view structure of the mounting frame.

[0034] In the figure: 1, bottom plate; 2, extension plate; 3, adjustment assembly; 301, electric slide rail; 302, first slide seat; 303, second slide seat; 3031, screw hole; 3032, positive and negative screw rod; 3033, first motor; 304, connecting rod; 4, finger cylinder; 5, fixing assembly; 501, lifting platform; 502, fixing clamping plate; 503, boss; 504, second motor; 5041, groove; 5042, moving seat; 5043, moving clamping plate; 5044, adjusting screw rod; 6, welding assembly; 601, rotating wheel; 602, driven wheel; 603, lifting seat; 6031, conveying pipe; 60 32. Pressure relief valve; 6033. Compressor; 6034. Pressure tank; 6035. Sealing plug rod; 604. Extension frame; 6041. Moving groove; 6042. Support rod; 6043. Limit pulley; 6044. Slide; 6045. Socket; 6046. Turning seat; 6047. Welding gun; 605. Mounting frame; 6051. Extension rod; 6052. Mounting seat; 606. Column; 6061. Tension spring; 6062. Moving sleeve; 6063. Tensioning wheel; 6064. Transmission belt; 6065. Driving wheel; 6066. Driving motor; 7. Connectors; 8. Anti-collision beam body. DETAILED DESCRIPTION

[0035] The following will be combined with 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 making creative work are within the scope of protection of the present invention.

[0036] like Figures 1 to 12 As shown, a device for fixing and welding an anti-collision beam of an automobile comprises a base plate 1, an upper surface of the base plate 1 is provided with an adjusting component 3 for adjusting a welding position, an extension plate 2 is provided at one side of the base plate 1, a fixing component 5 for fixing the position of an anti-collision beam body 8 is provided above the extension plate 2, a finger cylinder 4 for fixing a connecting piece 7 is fixedly installed at one side of the adjusting component 3, and a welding component 6 for automatic welding is fixedly installed on the upper side of the adjusting component 3.

[0037] In this embodiment, the adjustment component 3 includes an electric slide rail 301, which is arranged on the upper surface of the bottom plate 1. A first slide seat 302 is slidably installed on the upper side of the electric slide rail 301, and second slide seats 303 are slidably installed on both sides above the first slide seat 302. The first slide seat 302 and the second slide seat 303 move alternately. A connecting rod 304 for installing the welding component 6 is fixedly installed on the upper surface of the second slide seat 303, and a finger cylinder 4 is fixedly installed on one end of the connecting rod 304;

[0038] A first motor 3033 is fixedly mounted on one side of the first slide 302 , and a forward and reverse screw rod 3032 is fixedly mounted on the output end of the first motor 3033 . Screw holes 3031 are formed through the inside of the two second slides 303 , and the screw holes 3031 are threadedly matched with the forward and reverse screw rods 3032 .

[0039] The first motor 3033 is started to drive the forward and reverse screw rods 3032 to rotate. During the rotation of the forward and reverse screw rods 3032, the first slide seat 302 and the second slide seats 303 on both sides are slidably matched, so that when the forward and reverse screw rods 3032 and the screw holes 3031 are threadedly matched, the distance between the second slide seats 303 on both sides is controlled, so that the finger cylinder 4 and the welding assembly 6 can be adjusted to the desired welding combination position;

[0040] In the present application, by setting up the finger cylinder 4, the connecting part 7 can be fixed and clamped in advance, and the connecting part 7 can be released after welding is completed to facilitate the removal of the anti-collision beam, and the first slide 302 and the second slide 303 are used to move alternately, so that the present application can not only adjust the welding spacing, but also adjust the spacing between the connecting part 7 and the anti-collision beam body 8 through the first slide 302 and the electric slide rail 301, to ensure that the distance of the weld during welding meets the optimal welding requirements.

[0041] It should be noted that the fixing assembly 5 includes a lifting platform 501 for adjusting the height of the anti-collision beam body 8, a fixed clamping plate 502 is fixedly installed on one side of the lifting platform 501, and a boss 503 is fixedly installed on the other side of the lifting platform 501. A groove 5041 is opened inside the boss 503, and a movable seat 5042 is movably arranged inside the groove 5041. A movable clamping plate 5043 is fixedly installed on the upper end of the movable seat 5042;

[0042] A second motor 504 is fixedly mounted on one side of the groove 5041 , and an adjusting screw rod 5044 is fixedly mounted on the output end of the second motor 504 . The adjusting screw rod 5044 is threadedly matched with the moving seat 5042 .

[0043] By starting the lifting platform 501, the height position of the anti-collision beam body 8 can be adjusted so that the height between the anti-collision beam body 8 and the connecting piece 7 matches. Then, by starting the second motor 504, the adjusting screw 5044 can be driven to rotate, and under the thread cooperation between the adjusting screw 5044 and the movable seat 5042, the movable seat 5042 moves to one side, so that the movable clamping plate 5043 moves and cooperates with the fixed clamping plate 502 to fix and clamp the internal anti-collision beam body 8 to avoid subsequent movement during welding.

[0044] In the present application, the welding assembly 6 includes a rotating wheel 601, which is rotatably mounted on the rod body of the connecting rod 304, a sealing plug rod 6035 is fixedly mounted on the outer side of the rotating wheel 601, a lifting seat 603 is sleeved on the outer side of the sealing plug rod 6035, an extension frame 604 is fixedly mounted on the upper end of the lifting seat 603, a slide groove 6044 is arranged at one end of the extension frame 604, a socket 6045 is slidably mounted inside the slide groove 6044 through bolts, a flip seat 6046 is inserted and installed inside the socket 6045, and a welding gun 6047 is rotatably mounted inside the flip seat 6046;

[0045] In order to ensure that the welding gun 6047 can be moved to the required angle, the position of the through socket 6045 inside the slide groove 6044 is adjusted by bolts, so that the height of the welding gun 6047 can be adjusted. Then, by pulling the flip seat 6046 out of the through socket 6045, the distance between the welding gun 6047 and the weld can be adjusted. Then, the welding gun 6047 can be installed inside the flip seat 6046. By flipping the angle of the welding gun 6047, the welding position of the welding gun 6047 can be accurately adjusted.

[0046] The upper surfaces of the second slides 303 on both sides are fixedly mounted with a mounting frame 605, and extension rods 6051 are fixedly mounted on both sides of the mounting frame 605. A mounting seat 6052 is sleeved between the extension rods 6051 on both sides. The mounting seat 6052 and the extension rod 6051 are interlaced and matched, so that the spacing between the mounting seats 6052 on both sides can be adaptively adjusted to adapt to the position adjustment between the second slides 303 on both sides.

[0047] In the specific setting, a driven wheel 602 is fixedly installed on the rear side of the rotating wheels 601 on both sides, a column 606 is fixedly installed in the middle of the mounting seat 6052, a movable sleeve 6062 is movably installed on the column body of the column 606 through a tensioning spring 6061, a tensioning wheel 6063 is rotatably installed on one side of the movable sleeve 6062, a driving motor 6066 is fixedly installed on the lower side of the column 606, and a driving wheel 6065 is fixedly installed on the output end of the driving motor 6066, and a transmission belt 6064 is commonly connected to the driven wheels 602 on both sides and the tensioning wheel 6063 and the driving wheel 6065.

[0048] In order to enable the welding guns 6047 on both sides to revolve around the welding position on the corresponding side, the driving motor 6066 located in the middle is started and the driving wheel 6065 is rotated to enable the transmission belt 6064 to obtain power, and then the driven wheels 602 on both sides are driven, so that the driven wheels 602 on both sides drive the rotating wheel 601 to rotate on the rod body of the connecting rod 304, and the welding gun 6047 rotates accordingly, so that the welding gun 6047 can revolve around the welding position of the connecting piece 7, ensuring that the connecting piece 7 can be fully automatically welded without flipping when it is fixed, thereby greatly improving the welding efficiency.

[0049] In the present application, a moving groove 6041 is provided on the lower surface of the extension frame 604, a support rod 6042 is slidably installed inside the moving groove 6041, the support rod 6042 is a combination of a screw rod and a screw sleeve, and a limiting pulley 6043 for fitting the connecting member 7 is rotatably installed at the bottom of the support rod 6042;

[0050] By having the limiting pulley 6043 attached to the surface of the connecting member 7 and under the support and limitation of the support rod 6042, the lowest downward position of the welding gun 6047 can be limited, ensuring that the welding gun 6047 can be adjusted to the welding position when it is downward, thereby ensuring stability during welding.

[0051] It can be understood that a compressor 6033 is fixedly installed on one side of the mounting seat 6052, the compressor 6033 is connected to a pressure tank 6034, a pressure relief valve 6032 is fixedly installed on the upper end of the pressure tank 6034, and the pressure tank 6034 is communicated with the lower end of the lifting seat 603 on both sides through a delivery pipe 6031.

[0052] In order to ensure that the welding gun 6047 can fit the welding position when it goes around the welding point and avoid the situation of cold welding, the compressor 6033 is started to deliver air, which is sequentially transmitted through the pressure tank 6034 and the delivery pipe 6031 to the inside of the lifting seat 603 and located below the sealing plug rod 6035, wherein the sealing plug rod 6035 is fixedly installed on the surface of the rotating wheel 601, so that the pressure below the lifting seat 603 is greater than that above, and the lifting seat 603 is pulled downward, and the welding gun 6047 is rotated and supported by the limit pulley 6043, so that the welding gun 6047 can move close to the welding point;

[0053] When welding at a corner, the rotation of the welding gun 6047 will be affected by the interference of the corner. In order to prevent the excessive pressure below the lifting seat 603 from causing jamming, a pressure relief valve 6032 is provided at the upper end of the pressure tank 6034 to discharge part of the current gas to reduce the pressure, so that the welding gun 6047 can move in line with the corner, and then the compressor 6033 is used to replenish gas again to ensure that the welding gun 6047 moves downward close to the welding position.

[0054] The working principle of this automobile anti-collision beam fixing welding device:

[0055] When in use, firstly, the connecting piece 7 and the anti-collision beam body 8 to be welded are placed on the finger cylinder 4 and the lifting platform 501 respectively, then the finger cylinder 4 is started to fix the connecting piece 7, and at the same time, the second motor 504 is started to move the moving clamping plate 5043 and cooperate with the fixed clamping plate 502 to fix and clamp the internal anti-collision beam body 8, thereby completing the position fixation of the welded parts;

[0056] After the fixation is completed, the first motor 3033 is started to drive the forward and reverse screw rods 3032 to rotate. During the rotation of the forward and reverse screw rods 3032, the first slide seat 302 and the second slide seats 303 on both sides are slidably matched, so that when the forward and reverse screw rods 3032 and the screw holes 3031 are threadedly matched, the distance between the second slide seats 303 on both sides is controlled, so that the connector 7 can be adjusted to the desired welding combination position;

[0057] Then, welding is started. During the welding process, the compressor 6033 is started to deliver air, which is sequentially transmitted through the pressure tank 6034 and the delivery pipe 6031 to the inside of the lifting seat 603 and is located below the sealing plug rod 6035. The sealing plug rod 6035 is fixedly mounted on the surface of the rotating wheel 601, so that the pressure below the lifting seat 603 is greater than that above, and the lifting seat 603 is pulled downward, so that the limiting pulley 6043 is attached to the surface of the connecting member 7, and the welding gun 6047 is limited to achieve welding;

[0058] Then, the driving motor 6066 is started again to rotate the driving wheel 6065, so that the transmission belt 6064 is powered, and then the driven wheels 602 on both sides are driven, so that the driven wheels 602 on both sides drive the rotating wheel 601 to rotate on the connecting rod 304, and the welding gun 6047 rotates accordingly;

[0059] During the rotation of the welding gun 6047, the compressor 6033 is used to control the internal pressure in real time to ensure that the lifting seat 603 keeps moving downward, and cooperates with the limiting pulley 6043 so that the welding gun 6047 moves along the surface shape of the connecting member 7 during rotation, so that the welding gun 6047 can automatically find the welding position;

[0060] After the welding is completed, in order to avoid the subsequent connection cables from getting tangled, the present application needs to be reset after one rotation before the next round of welding can be carried out.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A vehicle anti-collision beam fixing and welding device, comprising a bottom plate (1), characterized in that: An adjusting component (3) for adjusting the welding position is arranged on the upper surface of the base plate (1); an extension plate (2) is arranged on one side of the base plate (1); a fixing component (5) for fixing the position of the anti-collision beam body (8) is arranged above the extension plate (2); a finger cylinder (4) for fixing the connecting piece (7) is fixedly mounted on one side of the adjusting component (3); and a welding component (6) for automatic welding is fixedly mounted on the upper side of the adjusting component (3).

2. The automobile anti-collision beam fixing and welding device according to claim 1 is characterized in that: The adjustment component (3) includes an electric slide rail (301), the electric slide rail (301) is arranged on the upper surface of the base plate (1), a first slide seat (302) is slidably mounted on the upper side of the electric slide rail (301), second slide seats (303) are slidably mounted on both sides above the first slide seat (302), the first slide seat (302) and the second slide seat (303) move alternately, a connecting rod (304) for mounting a welding component (6) is fixedly mounted on the upper surface of the second slide seat (303), and a finger cylinder (4) is fixedly mounted on one end of the connecting rod (304).

3. The automobile anti-collision beam fixing and welding device according to claim 2 is characterized in that: A first motor (3033) is fixedly mounted on one side of the first slide seat (302), and a forward and reverse screw rod (3032) is fixedly mounted on the output end of the first motor (3033). Screw holes (3031) are provided through the insides of the two second slide seats (303), and the screw holes (3031) are threadedly matched with the forward and reverse screw rods (3032).

4. The automobile anti-collision beam fixing and welding device according to claim 1, characterized in that: The fixing assembly (5) comprises a lifting platform (501) for adjusting the height of the anti-collision beam body (8); a fixing clamping plate (502) is fixedly mounted on one side of the lifting platform (501); a boss (503) is fixedly mounted on the other side of the lifting platform (501); a groove (5041) is provided inside the boss (503); a movable seat (5042) is movably arranged inside the groove (5041); and a movable clamping plate (5043) is fixedly mounted on the upper end of the movable seat (5042).

5. The automobile anti-collision beam fixing and welding device according to claim 4 is characterized in that: A second motor (504) is fixedly mounted on one side of the groove (5041), and an adjusting screw rod (5044) is fixedly mounted on the output end of the second motor (504), wherein the adjusting screw rod (5044) is threadably matched with the movable seat (5042).

6. The automobile anti-collision beam fixing and welding device according to claim 2, characterized in that: The welding assembly (6) comprises a rotating wheel (601), wherein the rotating wheel (601) is rotatably mounted on the rod body of the connecting rod (304), a sealing plug rod (6035) is fixedly mounted on the outer side of the rotating wheel (601), a lifting seat (603) is sleeved on the outer side of the sealing plug rod (6035), an extension frame (604) is fixedly mounted on the upper end of the lifting seat (603), a slide groove (6044) is provided at one end of the extension frame (604), a through socket (6045) is slidably mounted inside the slide groove (6044) via bolts, a flip seat (6046) is inserted and mounted inside the through socket (6045), and a welding gun (6047) is rotatably mounted inside the flip seat (6046).

7. The automobile anti-collision beam fixing and welding device according to claim 6, characterized in that: The lower surface of the extension frame (604) is provided with a movable groove (6041), a support rod (6042) is slidably mounted inside the movable groove (6041), the support rod (6042) is a combination of a screw rod and a screw sleeve, and a limiting pulley (6043) for fitting the connecting piece (7) is rotatably mounted at the bottom of the support rod (6042).

8. The automobile anti-collision beam fixing and welding device according to claim 6, characterized in that: A mounting frame (605) is fixedly mounted on the upper surfaces of the second slide seats (303) on both sides, extension rods (6051) are fixedly mounted on both sides of the mounting frame (605), and a mounting seat (6052) is sleeved between the extension rods (6051) on both sides.

9. The automobile anti-collision beam fixing and welding device according to claim 8, characterized in that: A driven wheel (602) is fixedly mounted on the rear side of the rotating wheels (601) on both sides, a column (606) is fixedly mounted in the middle of the mounting seat (6052), a movable sleeve (6062) is movably mounted on the column body of the column (606) via a tensioning spring (6061), a tensioning wheel (6063) is rotatably mounted on one side of the movable sleeve (6062), a driving motor (6066) is fixedly mounted on the lower side of the column (606), a driving wheel (6065) is fixedly mounted on the output end of the driving motor (6066), and a transmission belt (6064) is commonly connected to the driven wheels (602) on both sides, the tensioning wheel (6063) and the driving wheel (6065).

10. The automobile anti-collision beam fixing and welding device according to claim 8, characterized in that: A compressor (6033) is fixedly mounted on one side of the mounting seat (6052), the compressor (6033) is connected to a pressure tank (6034), a pressure relief valve (6032) is fixedly mounted on the upper end of the pressure tank (6034), and the pressure tank (6034) is communicated with the lower ends of the lifting seats (603) on both sides via a delivery pipe (6031).

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