Automatic welding device for metal square tube support

Abstract

The invention discloses an automatic welding device for a metal square tube support, which belongs to the technical field of square tube support processing and comprises a bottom plate, and a support bracket for horizontally supporting the support is arranged at the front end of the top of the bottom plate. The welding guns are symmetrically arranged at the two ends of the outer side of the transverse plate, the angle adjusting mechanisms are arranged at the tops of the two welding guns, the telescopic mechanism is arranged between the two welding guns, the angle adjusting mechanisms can be used for adjusting the welding angle according to the position of a welding seam, and the distance between the welding guns is adjusted according to the width of a welded pipe; welding seams on the opposite side edges of a welded pipe can be welded at the same time, the welding speed is increased, in addition, a first motor is matched with a Z-shaped rod to control rotation of a transverse plate, in the using process of the device, the horizontal position and the vertical position of a welding gun can be adjusted, the vertical welding seams can be welded at the same time, and the welding efficiency is improved. Horizontal welding seams at the top and the bottom of the support can be welded at the same time, the support does not need to be turned over, welding is more convenient, and practicability is higher.

Description

Technical Field

[0001] This invention relates to a welding device, and more particularly to an automatic welding device for metal square tube supports, belonging to the field of square tube support processing technology. Background Technology

[0002] Metal square tube supports have a wide range of applications. In the construction industry, they can be used as structural supports, scaffolding, and building decoration. In industry, they are used for equipment support, conveyor line supports, and warehouse shelves. In the home furnishing industry, they can be used to make furniture frames, clothes racks, and storage racks. In addition, they are also used in stage construction, automobile modification, and solar panel supports, playing a key role in stable support and structural construction in various fields.

[0003] Currently, although six-axis articulated industrial robots are used for welding square tube supports, which greatly reduces manual labor, the welding angle of the industrial robot is limited. The welding torch cannot reach the bottom weld of the square tube support for welding. It is necessary to flip it over a second time after welding the top and sides, which is inconvenient. In addition, only one weld can be welded at a time, resulting in a low welding rate.

[0004] To address this issue, an automatic welding device for metal square tube supports was designed. Summary of the Invention

[0005] The main objective of this invention is to provide an automatic welding device for metal square tube supports. This device features welding torches symmetrically arranged at both ends of a horizontal plate, with angle adjustment mechanisms at the top of each torch and a telescopic mechanism between them. During use, the angle adjustment mechanisms allow for adjusting the welding angle based on the weld seam position, and the torch spacing can be adjusted according to the width of the tube, enabling simultaneous welding of weld seams on opposite sides of the tube, thus increasing the welding speed. Furthermore, a first motor, in conjunction with a Z-shaped rod, controls the rotation of the horizontal plate, allowing for horizontal and vertical position adjustment of the welding torches. This enables simultaneous welding of vertical weld seams, as well as welding of the top and bottom of the support simultaneously. Horizontal welding eliminates the need to flip the support, making welding more convenient and practical. The support bracket, composed of a first transverse electric slide rail, a first U-shaped plate, a slide rod, a slider, a slide hole, a support rod, a second U-shaped plate, a clamping assembly, and a positioning assembly, can horizontally support the square tube support above the horizontal plane during use. In addition, the clamping assembly, composed of a vertical rod, a through hole, a support plate, a first spring, and an L-shaped clamp, and the positioning assembly, composed of an internal mounting groove on the slider, an arc-shaped pressure plate, a second spring, an insertion hole, a trapezoidal insertion block, and a cone head, uses a linkage control method to clamp and limit the support itself during placement, making the positioning of the square tube support more convenient.

[0006] The objective of this invention can be achieved by adopting the following technical solution: An automatic welding device for metal square tube supports includes a base plate. A support bracket for horizontal support of the support is provided at the front end of the top of the base plate. A longitudinal electric slide rail is provided along the width direction at the rear end of the top of the base plate. A second transverse electric slide rail is mounted on the electric slider at the top of the longitudinal electric slide rail, and the second transverse electric slide rail is arranged along the length direction of the base plate. A vertical electric slide rail is vertically mounted on the electric slider at the top of the second transverse electric slide rail. A mounting plate is mounted on the electric slider outside the vertical electric slide rail. A first motor is mounted on the outside of the mounting plate. A Z-shaped rod is mounted on the output end of the first motor. A horizontal plate is vertically mounted on the end of the Z-shaped rod away from the first motor. An electric telescopic rod is mounted on the top of the horizontal plate, and the length direction of the electric telescopic rod is perpendicular to the straight line direction of the horizontal plate. A first L-shaped plate is mounted on the output end of the electric telescopic rod, and the first L-shaped plate is located outside the horizontal plate. Second L-shaped plates are provided on both sides of the first L-shaped plate. A telescopic mechanism for adjusting the distance between the two sets of second L-shaped plates is provided on the top of the first L-shaped plate. A welding torch is mounted on the bottom of each of the second L-shaped plates, and an angle adjustment mechanism is provided on the top of each welding torch.

[0007] Preferably, the support bracket includes a first transverse electric slide rail, a first U-shaped plate, a slide rod, a slider, a slide hole, a support rod, a second U-shaped plate, a clamping assembly, and a positioning assembly. The first transverse electric slide rail is arranged parallel to the length direction of the base plate, and there are two sets of the first transverse electric slide rail. The first U-shaped plate is fixed between the electric sliders on the two sets of the first transverse electric slide rail. The two ends of the first U-shaped plate are fixed between the two ends. The two ends of the slide rod are slidably mounted with sliders. The sliders are provided with slide holes that cooperate with the slide rods. The sliders are provided with positioning assemblies to fix the position of the sliders inside. The top of each slider is vertically fixed with a support rod. The top of each support rod is rotatably mounted with a second U-shaped plate. The second U-shaped plate is provided with clamping assemblies inside.

[0008] Preferably, the clamping assembly includes a vertical rod, a through hole, a support plate, a first spring, and an L-shaped clamping plate. The vertical rod is vertically slidably disposed inside the support rod and extends to the top of the second U-shaped plate. The bottom end of the second U-shaped plate has a through hole for the vertical rod to pass through. The top end of the vertical rod is rotatably mounted with a support plate. The bottom end of the support plate is provided between the bottom end of the support plate and the inner bottom of the second U-shaped plate. The vertical rod passes through the inside of the first spring. The inner side of the second U-shaped plate is hinged with L-shaped clamping plates, and the bottom end of the L-shaped clamping plates is in contact with the bottom of the support plate.

[0009] Preferably, there are two sets of sliding rods, and the sliding rods pass through both ends of the slider, with the bottom of the slider fitting against the inner bottom of the first U-shaped plate.

[0010] Preferably, the positioning component includes a mounting groove, an arc-shaped pressure plate, a second spring, a socket, a trapezoidal plug, and a cone. The mounting grooves are symmetrically opened inside the slider, and the mounting grooves are respectively connected to the inside of the sliding hole. An arc-shaped pressure plate is slidably installed inside each mounting groove. A second spring is provided between the inner end of the arc-shaped pressure plate and the mounting groove. A socket is vertically opened between the upper and lower ends of the slider. A trapezoidal plug is fixed on the side of the arc-shaped pressure plate away from the sliding hole. The end of the trapezoidal plug slides into the inside of the socket. The bottom end of the vertical rod extends into the inside of the socket. A cone is provided at the bottom end of the vertical rod, and the side of the cone fits against the end of the trapezoidal plug.

[0011] Preferably, the radius of the groove on the side of the arc-shaped pressure plate near the sliding hole is the same as the outer diameter of the sliding rod, and the inner side of the groove of the arc-shaped pressure plate is provided with anti-slip texture.

[0012] Preferably, the telescopic mechanism includes a second motor, a first gear, and a first rack. The second motor is mounted on the top of the first L-shaped plate. The first gear is mounted on the output end of the second motor. The first rack is meshed on both sides of the first gear, and the first rack slides horizontally on the top of the first L-shaped plate. The end of the first rack away from the first gear is fixedly connected to the second L-shaped plate.

[0013] Preferably, a limiting rod is fixed on the side of the second L-shaped plate close to the first L-shaped plate, and limiting holes that cooperate with the limiting rods are opened on both sides of the first L-shaped plate, with the limiting rods slidably disposed inside the limiting holes.

[0014] Preferably, the angle adjustment mechanism includes a second gear, a shaft, a mounting plate, a strip groove, and a second rack. The top of the second L-shaped plate is rotatably mounted with a second gear, and the bottom end of the second gear is fixed with a shaft. The shaft extends to the bottom end of the second L-shaped plate and is rotatably connected to the shaft. The bottom end of the shaft is fixed with a mounting plate. The welding torch is mounted on the bottom of the mounting plate. A strip groove is formed on the outer side of the horizontal plate along its length. The two ends of the strip groove are slidably mounted with a second rack along a straight direction. The second rack is perpendicular to the surface of the horizontal plate. The second rack is located between the outer side of the second gear and the inner end of the second L-shaped plate, and the second rack meshes with the second gear.

[0015] Preferably, the top of the second L-shaped plate has a shaft hole, through which a shaft passes, and the length of the shaft is the same as the thickness of the second L-shaped plate.

[0016] The beneficial effects of this invention are as follows: This invention provides an automatic welding device for metal square tube supports. Welding guns are symmetrically arranged at both ends of the outer side of a horizontal plate, with angle adjustment mechanisms at the top of each set of welding guns and a telescopic mechanism between them. This allows the device to adjust the welding angle according to the weld position using the angle adjustment mechanisms and to adjust the spacing of the welding guns according to the width of the welded tube, enabling simultaneous welding of welds on opposite sides of the tube, thus increasing the welding speed. Furthermore, a first motor, in conjunction with a Z-shaped rod, controls the rotation of the horizontal plate, allowing the welding guns to be adjusted horizontally and vertically during use. This enables simultaneous welding of vertical welds and horizontal welds at the top and bottom of the support without the need to flip the support, making welding more convenient and practical. The support bracket, composed of a first transverse electric slide rail, a first U-shaped plate, a slide rod, a slider, a slide hole, a support rod, a second U-shaped plate, a clamping assembly, and a positioning assembly, can provide horizontal support for the square tube support above the horizontal plane during use. In addition, the clamping assembly, composed of a vertical rod, a through hole, a support plate, a first spring, and an L-shaped clamp, and the positioning assembly, composed of an internal mounting groove, an arc-shaped pressure plate, a second spring, an insertion hole, a trapezoidal insertion block, and a cone head, can be linked and controlled to clamp and limit the square tube support itself during placement using the support's own weight, making the positioning of the square tube support more convenient. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the vertical weld seam welding state in a preferred embodiment of an automatic welding device for metal square tube supports according to the present invention. Figure 2 This is a welding mechanism diagram of a preferred embodiment of an automatic welding device for metal square tube supports according to the present invention; Figure 3 This is a partial exploded view of the welding mechanism in a preferred embodiment of an automatic welding device for metal square tube supports according to the present invention. Figure 4 This is a welding state diagram of the horizontal weld seam of the welding mechanism in a preferred embodiment of the automatic welding device for metal square tube supports of the present invention. Figure 5 This is a diagram of a support bracket in a preferred embodiment of an automatic welding device for metal square tube supports according to the present invention; Figure 6 This is a partially exploded structural diagram of a support bracket in a preferred embodiment of an automatic welding device for metal square tube supports according to the present invention. Figure 7 This is a cross-sectional view of a support rod in a preferred embodiment of an automatic welding device for metal square tube supports according to the present invention; Figure 8 This is a cross-sectional view of the slider in a preferred embodiment of the automatic welding device for metal square tube supports of the present invention.

[0018] In the diagram: 1. Base plate; 2. Support bracket; 201. First transverse electric slide rail; 202. First U-shaped plate; 203. Slide rod; 204. Slider; 205. Slide hole; 206. Support rod; 207. Second U-shaped plate; 208. Clamping assembly; 2081. Vertical rod; 2082. Through hole; 2083. Support plate; 2084. First spring; 2085. L-shaped clamping plate; 209. Positioning component; 2091. Mounting slot; 2092. Arc-shaped pressure plate; 2093. Second spring; 2094. Insertion hole; 2095. Trapezoidal insert; 2096. Conical head; 3. Second transverse electric slide rail; 4. Longitudinal electric slide rail; 5. Vertical electric slide rail; 6. Mounting plate; 7. First motor; 8. Z-shaped rod; 9. Horizontal plate; 10. Electric telescopic rod; 11. First L-shaped plate; 12. Second L-shaped plate; 13. Welding torch; 14. Telescopic mechanism; 1401. Second motor; 1402. First gear; 1403. First rack; 1404. Limiting rod; 1405. Limiting hole; 15. Angle adjustment mechanism; 1501. Second gear; 1502. Shaft; 1503. Mounting plate; 1504. Strip groove; 1505. Second rack. Detailed Implementation

[0019] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0020] like Figures 1-8As shown, this embodiment provides an automatic welding device for metal square tube supports, including a base plate 1. A support bracket 2 for horizontal support of the support is provided at the front end of the top of the base plate 1. A longitudinal electric slide rail 4 is provided along the width direction at the rear end of the top of the base plate 1. A second transverse electric slide rail 3 is mounted on the electric slider at the top of the longitudinal electric slide rail 4, and the second transverse electric slide rail 3 is arranged along the length direction of the base plate 1. A vertical electric slide rail 5 is vertically mounted on the electric slider at the top of the second transverse electric slide rail 3. A mounting plate 6 is mounted on the electric slider outside the vertical electric slide rail 5. A first motor 7 is mounted on the outside of the mounting plate 6. The output of the first motor 7... A Z-shaped rod 8 is installed at one end. A horizontal plate 9 is vertically installed at the end of the Z-shaped rod 8 away from the first motor 7. An electric telescopic rod 10 is installed on the top of the horizontal plate 9. The length direction of the electric telescopic rod 10 is perpendicular to the straight line direction of the horizontal plate 9. A first L-shaped plate 11 is installed at the output end of the electric telescopic rod 10, and the first L-shaped plate 11 is located outside the horizontal plate 9. A second L-shaped plate 12 is provided on both sides of the first L-shaped plate 11. A telescopic mechanism 14 for adjusting the distance between the two sets of second L-shaped plates 12 is provided on the top of the first L-shaped plate 11. A welding torch 13 is installed at the bottom of each of the second L-shaped plates 12. An angle adjustment mechanism 15 is provided on the top of each welding torch 13.

[0021] Overall working principle: During automatic welding, the spot-welded bracket is first placed horizontally on top of the support bracket 2. There is a certain height between the bottom of the bracket and the top of the base plate 1, and this height is greater than the length of the corner of the Z-shaped rod 8. Simultaneously, the support point avoids the weld seam. After the bracket is placed, the second transverse electric slide rail 3 is activated to move the welding torch 13 to one end of the bracket. Welding proceeds sequentially from one end to the other. Then, based on the position of the weld seam, the angle adjustment mechanism 15 controls the tilt angle of the welding torch 13. Next, the longitudinal electric slide rail 4 is activated to bring the welding torch 13 closer to the weld seam. At this point, the welding torch 13 is vertically positioned above the weld seam. Afterwards, the vertical electric slide rail 5 is activated to control the welding torch 13 to be positioned on the horizontal plane at the top of the weld. Finally, the telescopic mechanism 14 is used to attach the two sets of welding torches 13 to the weld, open the welding torches 13, and use the vertical electric slide rail 5 to control the downward movement of the welding torches 13 to simultaneously weld the two sets of vertical welds on opposite sides of the square tube. After the vertical welds are completed, the first motor 7 is activated to control the horizontal plate 9 to rotate, adjusting the vertical welding torches 13 to a horizontal state. Then, the two sets of welding torches 13 are aligned with the horizontal welds and the horizontal welds are welded. The entire welding process does not require flipping the support, making the welding faster.

[0022] In this embodiment, the support bracket 2 includes a first transverse electric slide rail 201, a first U-shaped plate 202, a slide rod 203, a slider 204, a slide hole 205, a support rod 206, a second U-shaped plate 207, a clamping assembly 208, and a positioning assembly 209. The first transverse electric slide rail 201 is arranged parallel to the length direction of the base plate 1, and two sets of the first transverse electric slide rail 201 are provided. The first U-shaped plate 202 is fixed between the electric sliders on the two sets of first transverse electric slide rails 201. A sliding rod 203 is fixed between the two ends of the first U-shaped plate 202. A slider 204 is slidably installed at both ends of the sliding rod 203. A sliding hole 205 is provided on the slider 204 to cooperate with the sliding rod 203. A positioning component 209 is provided inside the slider 204 to fix the position of the slider 204. A support rod 206 is vertically fixed at the top of the slider 204. A second U-shaped plate 207 is rotatably installed at the top of the support rod 206. A clamping component 208 is provided inside the second U-shaped plate 207.

[0023] Local working principle: When supporting and limiting the bracket, the first horizontal electric slide rail 201 is activated to control the position of the first U-shaped plate 202 according to the length of the bracket, so as to ensure that both sets of first U-shaped plates 202 can be under the bracket. Then, according to the selection of the support point position, the second U-shaped plate 207 is rotated, which can be clamped on the horizontal long rod of the bracket or on the vertical end rod. After the second U-shaped plate 207 is engaged with the bracket, the clamping component 208 is used to fix the position of the bracket, and the positioning component 209 is used to position the slider 204 to ensure the stability of the support.

[0024] In this embodiment, the clamping assembly 208 includes a vertical rod 2081, a through hole 2082, a support plate 2083, a first spring 2084, and an L-shaped clamping plate 2085. The vertical rod 2081 is vertically slidably disposed inside the support rod 206 and extends to the top of the second U-shaped plate 207. The bottom end of the second U-shaped plate 207 has a through hole 2082 for the vertical rod 2081 to pass through. The top end of the vertical rod 2081 is rotatably mounted with the support plate 2083. The bottom end of the support plate 2083 is provided with the first spring 2084 between the bottom end of the support plate 2083 and the inner bottom of the second U-shaped plate 207. The vertical rod 2081 passes through the inside of the first spring 2084. The inner side of the second U-shaped plate 207 is hinged with the L-shaped clamping plate 2085, and the bottom end of the L-shaped clamping plate 2085 is in contact with the bottom of the support plate 2083.

[0025] Local working principle: The presence of the vertical rod 2081 can limit the second U-shaped plate 207 so that the second U-shaped plate 207 can rotate around the vertical rod 2081. After the bracket is inserted into the interior of the second U-shaped plate 207, it will first contact the inner bottom of the L-shaped clamp 2085. Since the bracket itself has a certain weight, it will control the L-shaped clamp 2085 to flip inward and compress the first spring 2084 downward. The end of the L-shaped clamp 2085 will be stuck on the side of the bracket for compression and limitation.

[0026] In this embodiment, two sets of sliding rods 203 are provided, and the sliding rods 203 pass through both ends of the slider 204 respectively, and the bottom of the slider 204 is in contact with the inner bottom of the first U-shaped plate 202.

[0027] Local working principle: The use of two sets of sliding rods 203 can ensure the smooth sliding of slider 204.

[0028] In this embodiment, the positioning component 209 includes a mounting groove 2091, an arc-shaped pressure plate 2092, a second spring 2093, an insertion hole 2094, a trapezoidal insertion block 2095, and a cone head 2096. The mounting grooves 2091 are symmetrically formed inside the slider 204, and the mounting grooves 2091 are respectively connected to the interior of the sliding hole 205. The arc-shaped pressure plate 2092 is slidably mounted inside each mounting groove 2091, and there is a connection between the arc-shaped pressure plate 2092 and the inner end of the mounting groove 2091. A second spring 2093 is provided. A vertical insertion hole 2094 is provided between the upper and lower ends of the slider 204. A trapezoidal insertion block 2095 is fixed on the side of the arc-shaped pressure plate 2092 away from the sliding hole 205. The end of the trapezoidal insertion block 2095 slides into the interior of the insertion hole 2094. The bottom end of the vertical rod 2081 extends into the interior of the insertion hole 2094. A cone head 2096 is provided at the bottom end of the vertical rod 2081, and the side of the cone head 2096 is in contact with the end of the trapezoidal insertion block 2095.

[0029] Local working principle: After the bracket is placed inside the second U-shaped plate 207, the support plate 2083 is pressed downward. The downward movement of the support plate 2083 controls the vertical rod 2081 to move downward. The downward movement of the vertical rod 2081 presses the two sets of trapezoidal inserts 2095 toward the inside of the mounting groove 2091, stretching the second spring 2093. The arc-shaped pressure plate 2092 is attached to the surface of the slide rod 203, automatically positioning the slider 204.

[0030] In this embodiment, the radius of the groove on the side of the arc-shaped pressure plate 2092 near the sliding hole 205 is the same as the outer diameter of the sliding rod 203, and the inner side of the groove of the arc-shaped pressure plate 2092 is provided with anti-slip texture.

[0031] Local working principle: Since the radius of the groove of the arc-shaped pressure plate 2092 is the same as the outer diameter of the slide rod 203, there is a large contact area between the arc-shaped pressure plate 2092 and the slide rod 203. Furthermore, the anti-slip texture increases the frictional resistance and ensures the stability of the slider 204.

[0032] In this embodiment, the telescopic mechanism 14 includes a second motor 1401, a first gear 1402, and a first rack 1403. The second motor 1401 is mounted on the top of the first L-shaped plate 11. The first gear 1402 is mounted on the output end of the second motor 1401. The first rack 1403 is meshed on both sides of the first gear 1402, and the first rack 1403 slides horizontally on the top of the first L-shaped plate 11. The end of the first rack 1403 away from the first gear 1402 is fixedly connected to the second L-shaped plate 12.

[0033] Local working principle: Since the width of the welded pipes at the welding point is not the same, it is necessary to use the telescopic mechanism 14 to adjust the position of the two sets of welding torches 13, start the second motor 1401 to control the rotation of the first gear 1402, and the rotation of the first gear 1402 will simultaneously control the movement of the two sets of first racks 1403, thereby causing the two sets of second L-shaped plates 12 to move towards or in opposite directions, changing the distance between the two sets of welding torches 13.

[0034] In this embodiment, a limiting rod 1404 is fixed on the side of the second L-shaped plate 12 close to the first L-shaped plate 11, and a limiting hole 1405 that cooperates with the limiting rod 1404 is provided on both sides of the first L-shaped plate 11. The limiting rod 1404 is slidably disposed inside the limiting hole 1405.

[0035] Local working principle: When controlling the movement of the second L-shaped plate 12, the limiting action of the limiting rod 1404 can ensure that the second L-shaped plate 12 moves horizontally.

[0036] In this embodiment, the angle adjustment mechanism 15 includes a second gear 1501, a shaft 1502, a mounting plate 1503, a strip groove 1504, and a second rack 1505. The top of each of the second L-shaped plates 12 is rotatably mounted with a second gear 1501, and the bottom end of each of the second gears 1501 is fixed with a shaft 1502. The shaft 1502 extends to the bottom end of the second L-shaped plate 12 and is rotatably connected to it. The bottom end of the shaft 1502 is fixed with a mounting plate. The welding torch 13 is installed at the bottom of the mounting plate 1503. A strip groove 1504 is provided on the outer side of the horizontal plate 9 along the length direction. The two ends of the strip groove 1504 are slidably mounted with a second rack 1505 along the straight direction. The second rack 1505 is perpendicular to the surface of the horizontal plate 9. The second rack 1505 is located between the outer side of the second gear 1501 and the inner end of the second L-shaped plate 12, and the second rack 1505 meshes with the second gear 1501.

[0037] Local working principle: During the welding process, in order to ensure the quality of the welding, the welding torch 13 should preferably be positioned perpendicular to the weld seam and located in the middle of the two welding pipes. Therefore, the angle of the welding torch 13 needs to be adjusted. When in use, the electric telescopic rod 10 is activated to push the first L-shaped plate 11 to move. The second gear 1501 moves along the length of the second rack 1505. The second gear 1501 rotates at the same time, thereby controlling the two sets of welding torches 13 to adjust their angles simultaneously.

[0038] In this embodiment, the top of the second L-shaped plate 12 is provided with a shaft hole, and the shaft 1502 passes through the shaft hole. The length of the shaft 1502 is the same as the thickness of the second L-shaped plate 12.

[0039] Local working principle: The shaft hole limits the position of the shaft 1502, and the second gear 1501 and the mounting plate 1503 are respectively attached to the upper and lower sides of the second L-shaped plate 12, and the second gear 1501 can rotate smoothly.

[0040] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. An automatic welding device for metal square tube supports, comprising a base plate (1), characterized in that: The front end of the top of the base plate (1) is provided with a support bracket (2) for horizontal support of the bracket. The rear end of the top of the base plate (1) is provided with a longitudinal electric slide rail (4) along the width direction. A second transverse electric slide rail (3) is installed on the electric slider at the top of the longitudinal electric slide rail (4). The second transverse electric slide rail (3) is set along the length direction of the base plate (1). A vertical electric slide rail (5) is vertically installed on the electric slider at the top of the second transverse electric slide rail (3). A mounting plate (6) is installed on the electric slider outside the vertical electric slide rail (5). A first motor (7) is installed on the outside of the mounting plate (6). A Z-shaped rod (8) is installed at the output end of the first motor (7). The Z-shaped rod (8) is far away from the first motor. A horizontal plate (9) is vertically installed at one end of the machine (7). An electric telescopic rod (10) is installed on the top of the horizontal plate (9). The length direction of the electric telescopic rod (10) is perpendicular to the straight line direction of the horizontal plate (9). A first L-shaped plate (11) is installed at the output end of the electric telescopic rod (10). The first L-shaped plate (11) is located outside the horizontal plate (9). A second L-shaped plate (12) is provided on both sides of the first L-shaped plate (11). A telescopic mechanism (14) for adjusting the distance between the two sets of second L-shaped plates (12) is provided on the top of the first L-shaped plate (11). A welding gun (13) is installed at the bottom of each of the second L-shaped plates (12). An angle adjustment mechanism (15) is provided on the top of each welding gun (13).

2. The automatic welding device for metal square tube supports according to claim 1, characterized in that: The support bracket (2) includes a first transverse electric slide rail (201), a first U-shaped plate (202), a slide rod (203), a slider (204), a slide hole (205), a support rod (206), a second U-shaped plate (207), a clamping assembly (208), and a positioning assembly (209). The first transverse electric slide rail (201) is arranged parallel to the length direction of the base plate (1), and there are two sets of the first transverse electric slide rail (201). The first U-shaped plate (202) is fixed between the electric sliders on the two sets of the first transverse electric slide rail (201). A sliding rod (203) is fixed between the two ends of the plate (202). A slider (204) is slidably installed at both ends of the sliding rod (203). A sliding hole (205) is provided on the slider (204) to cooperate with the sliding rod (203). A positioning component (209) is provided inside the slider (204) to fix the position of the slider (204). A support rod (206) is vertically fixed at the top of the slider (204). A second U-shaped plate (207) is rotatably installed at the top of the support rod (206). A clamping component (208) is provided inside the second U-shaped plate (207).

3. The automatic welding device for metal square tube supports according to claim 2, characterized in that: The clamping assembly (208) includes a vertical rod (2081), a through hole (2082), a support plate (2083), a first spring (2084), and an L-shaped clamping plate (2085). The vertical rod (2081) is vertically slidably disposed inside the support rod (206), and the vertical rod (2081) extends to the top of the second U-shaped plate (207). The bottom end of the second U-shaped plate (207) is provided with a through hole (2082) through which the vertical rod (2081) passes. A support plate (2083) is rotatably mounted on the top of the vertical rod (2081). A first spring (2084) is provided between the bottom end of the support plate (2083) and the inner bottom of the second U-shaped plate (207). The vertical rod (2081) passes through the inside of the first spring (2084). An L-shaped clamp (2085) is hinged to the inner side of the second U-shaped plate (207). The bottom end of the L-shaped clamp (2085) is in contact with the bottom of the support plate (2083).

4. The automatic welding device for metal square tube supports according to claim 3, characterized in that: Two sets of sliding rods (203) are provided, and the sliding rods (203) pass through both ends of the slider (204), and the bottom of the slider (204) is in contact with the inner bottom of the first U-shaped plate (202).

5. The automatic welding device for metal square tube supports according to claim 4, characterized in that: The positioning assembly (209) includes a mounting groove (2091), an arc-shaped pressure plate (2092), a second spring (2093), a socket (2094), a trapezoidal insert (2095), and a cone (2096). The mounting groove (2091) is symmetrically opened inside the slider (204), and the mounting groove (2091) is connected to the inside of the sliding hole (205). The arc-shaped pressure plate (2092) is slidably installed inside the mounting groove (2091). There is a space between the arc-shaped pressure plate (2092) and the inner end of the mounting groove (2091). The second spring (2093) and the slider (204) have vertically opened insertion holes (2094) between their upper and lower ends. The side of the arc-shaped pressure plate (2092) away from the sliding hole (205) is fixed with trapezoidal insertion blocks (2095). The end of the trapezoidal insertion block (2095) slides into the interior of the insertion hole (2094). The bottom end of the vertical rod (2081) extends into the interior of the insertion hole (2094). The bottom end of the vertical rod (2081) is provided with a cone head (2096), and the side of the cone head (2096) is in contact with the end of the trapezoidal insertion block (2095).

6. The automatic welding device for metal square tube supports according to claim 5, characterized in that: The radius of the groove on the side of the arc-shaped pressure plate (2092) near the sliding hole (205) is the same as the outer diameter of the sliding rod (203), and the inner side of the groove of the arc-shaped pressure plate (2092) is provided with anti-slip texture.

7. An automatic welding device for metal square tube supports according to any one of claims 1-6, characterized in that: The telescopic mechanism (14) includes a second motor (1401), a first gear (1402) and a first rack (1403). The second motor (1401) is mounted on the top of the first L-shaped plate (11). The output end of the second motor (1401) is equipped with the first gear (1402). The first rack (1403) is meshed on both sides of the first gear (1402). The first rack (1403) slides horizontally on the top of the first L-shaped plate (11). The end of the first rack (1403) away from the first gear (1402) is fixedly connected to the second L-shaped plate (12).

8. The automatic welding device for metal square tube supports according to claim 7, characterized in that: The second L-shaped plate (12) has a limit rod (1404) fixed on one side near the first L-shaped plate (11). The first L-shaped plate (11) has a limit hole (1405) on both sides that cooperates with the limit rod (1404). The limit rod (1404) is slidably disposed inside the limit hole (1405).

9. The automatic welding device for metal square tube supports according to claim 8, characterized in that: The angle adjustment mechanism (15) includes a second gear (1501), a shaft (1502), a mounting plate (1503), a slot (1504), and a second rack (1505). The top of the second L-shaped plate (12) is rotatably mounted with the second gear (1501). The bottom end of the second gear (1501) is fixed with the shaft (1502). The shaft (1502) extends to the bottom end of the second L-shaped plate (12) and is rotatably connected to the shaft (1502). The bottom end of the shaft (1502) is fixed with the mounting plate (1505). 03), the welding torch (13) is installed at the bottom of the mounting plate (1503). A strip groove (1504) is provided on the outer side of the horizontal plate (9) along the length direction. The two ends of the strip groove (1504) are slidably installed with a second rack (1505) along the straight direction. The second rack (1505) is perpendicular to the surface of the horizontal plate (9). The second rack (1505) is located between the outer side of the second gear (1501) and the inner end of the second L-shaped plate (12). The second rack (1505) meshes with the second gear (1501).

10. The automatic welding device for metal square tube supports according to claim 9, characterized in that: The top of the second L-shaped plate (12) has a shaft hole, through which the shaft (1502) passes. The length of the shaft (1502) is the same as the thickness of the second L-shaped plate (12).

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