Automatic welding equipment for the bottom flange of street light pole

Abstract

The present invention discloses an automatic welding device for the bottom flange of a street light pole, which relates to the technical field of welding equipment, including a workbench, a clamping mechanism, a positioning mechanism and a welding mechanism, wherein: the clamping mechanism is centrally arranged in the middle of the workbench and includes a mounting plate, an inner support column, a hydraulic cylinder and an inner support block, and the flange and the street light pole are coaxially clamped above the mounting plate through the clamping mechanism; the positioning mechanism is symmetrically arranged on the front and rear sides of the workbench and includes a double-axis cylinder 1, a cylinder 1 and a positioning plate, and a pair of stiffening plates are synchronously positioned between the flange and the street light pole through the positioning mechanism; the welding mechanism is symmetrically arranged on the left and right sides of the workbench and includes a cylinder 2, a welding gun 1, a double-axis cylinder 2 and a welding gun 2, and the flange is welded to the street light pole through the double-axis cylinder 2 and the welding gun 2, and the stiffening plate is welded between the flange and the street light pole through the cylinder 2 and the welding gun 1. The present invention has the characteristics of reasonable scheme, ingenious structure, convenient use and efficient welding.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to automatic welding equipment for a flange at the bottom of a street lamp pole. Background Art

[0002] Street lights are generally composed of lamps, lamp arms, lamp poles, and base flanges. The lamp arms and lamp poles, as well as the lamp poles and base flanges are connected as a whole by welding, and in order to ensure the connection strength between the lamp poles and base flanges, a circle of stiffening plates is welded between the two.

[0003] At present, when welding the lamp pole and the base flange, the welder first puts the lamp pole horizontally on a pair of Y-shaped brackets, then uses one hand to put the base flange on the end of the lamp pole, and then uses the other hand to hold the welding gun for welding. During this process, the welder needs to wear a welding protective mask to filter the bright light and block the smoke, and wear welding protective gloves to block the high-temperature welding slag. Even so, the welder still needs to stay in the harsh working environment full of turbid welding smoke for a long time, which has a great impact on the physical and mental health of the workers.

[0004] At present, there are welding equipment that can weld flanges and stiffening plates on street light poles, but there are common practical problems such as cumbersome loading and unloading, inconvenient use, and low welding efficiency. In addition, the whole process requires the coordinated intervention of workers. For example, since the stiffening plates are welded one by one, workers are required to stay next to the equipment and place the stiffening plates one by one on the positioning tooling, which seriously restricts the improvement of production efficiency and economic benefits of related manufacturing companies. Summary of the invention

[0005] The object of the present invention is to provide an automatic welding device for the bottom flange of a street light pole to solve the above-mentioned defects caused by the prior art.

[0006] An automatic welding device for the bottom flange of a street light pole comprises a workbench, a clamping mechanism, a positioning mechanism and a welding mechanism, wherein:

[0007] A circular through groove 1 is centrally provided on the workbench, and rectangular through grooves 2 are symmetrically provided on the left and right sides of the through groove 1. A support frame is fixed on the lower side of the workbench, and a plurality of support legs are evenly connected to the lower side of the support frame.

[0008] The clamping mechanism is centrally arranged in the middle of the workbench and includes a mounting plate, an inner support column, a hydraulic cylinder and an inner support block. The inner support column and the inner support block are driven by the hydraulic cylinder to move synchronously, and the flange and the street light pole are coaxially clamped above the mounting plate;

[0009] The positioning mechanism is symmetrically arranged on the front and rear sides of the workbench and includes a double-axis cylinder 1, a cylinder 1 and a positioning plate. The double-axis cylinder 1 and the cylinder 1 drive a pair of positioning plates to move synchronously, and position a pair of stiffening plates between the flange and the street lamp pole synchronously.

[0010] The welding mechanism is symmetrically arranged on the left and right sides of the workbench and includes a cylinder 2, a welding torch 1, a double-axis cylinder 2 and a welding torch 2. The double-axis cylinder 2 drives the welding torch 2 to move inwards and welds the flange to the street lamp pole. The cylinder 2 drives a pair of welding torches 1 to move inwards and welds the stiffening plates between the flange and the street lamp pole.

[0011] Preferably, the mounting plate is coaxially arranged in the first through groove. A circular mounting groove 1 is provided in the middle of the mounting plate, and fan-shaped mounting grooves 2 are evenly distributed around the mounting groove 1. An arc-shaped mounting rod is inserted in each mounting groove 2, and a pair of inner support columns are slidably connected to the mounting rod. A pair of compression springs 1 are sleeved on the mounting rod outside each pair of inner support columns. The lower part of the mounting plate is coaxially connected with a connecting plate through a plurality of connecting columns. The hydraulic cylinder is vertically upwardly mounted in the middle of the connecting plate, and a lifting plate is horizontally connected to the end of its piston rod. A plurality of lifting strips are evenly welded to the edge of the lifting plate. A pair of hinge strips are hinged to each lifting strip. The upper ends of each pair of hinge strips are hinged to a transverse movement strip. An isosceles triangular transverse movement plate is horizontally welded to the outer end of the transverse movement strip. The transverse movement plates on the same side are inserted between a pair of inner support columns. A pair of "L"-shaped linkage strips are hinged to the middle of each pair of hinge strips, and a fan-shaped inner support block is mounted on the upper part of the linkage strip. All the inner support blocks are located in the mounting groove 1.

[0012] Preferably, the double-axis cylinder 1 is horizontally and inwards mounted on the upper side of the workbench, and a "U"-shaped transverse movement frame is connected to the end of its piston rod. There are a pair of cylinders 1, which are correspondingly mounted at both ends of the transverse movement frame. The cylinder 1 is horizontally and inwards arranged, and a hinge seat 1 is connected to the end of its piston rod. An "L"-shaped hinge member 1 is hinged to the hinge seat 1. The transverse movement frame is connected with a hinge seat 2 under each cylinder 1, and an "I"-shaped hinge member 2 is hinged to the hinge seat 2. The hinge member 2 and the hinge member 1 on the same side are hinged to each other. There are a pair of positioning plates, which are correspondingly mounted on the two hinge members 1. A right-angled triangular positioning groove is provided on the positioning plate, and a pair of magnet strips are inlaid on the groove wall of the positioning groove.

[0013] Preferably, the second cylinder is horizontally and inwardly installed on the lower side of the workbench through a fixing plate, and a "U"-shaped transverse movement frame is connected to the end of its piston rod. A pair of hinge frames are hinged on the front and rear sides of the transverse movement frame respectively. The upper ends of each pair of hinge frames are hinged to a linkage frame, and a pair of compression springs II are connected between the linkage frame and the transverse movement frame. An inclined frame plate is obliquely connected to the upper side of the linkage frame. Two welding torches I are symmetrically installed on the two inclined frame plates. The double-axis cylinder II is horizontally and inwardly installed between the two inclined frame plates through a cross plate, and a horizontal frame plate is horizontally connected to the end of its piston rod. The welding torch II is installed on the horizontal frame plate through a clamp. A side mounting column is vertically connected to the middle of the linkage frame. A pair of side mounting plates are symmetrically connected to the front and rear sides of the groove wall of the through groove II, and an "L"-shaped guiding groove is provided on the side mounting plate. The side mounting columns on the same side are slidably installed in the guiding groove.

[0014] Preferably, the inner support block adopts an internally hollow structure. A smoking hole is provided on the upper side of the inner support block and is connected to the suction port of the negative pressure fan. Smoking grooves are evenly distributed on the lower side of the inner support block.

[0015] Preferably, a support plate is horizontally installed in the middle of the support frame, and a motor is centrally installed above the support plate through a motor seat. The output end of the motor is coaxially connected to the lower side of the connecting plate through a flange seat.

[0016] Preferably, a pair of guide columns are symmetrically connected to the front and rear of the transverse movement frame, and the guide columns are slidably connected to the fixing plate through guide sleeves.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The clamping mechanism of the present invention can automatically clamp the flange and the street lamp pole together, avoiding manual close-range holding. After the flange and the street lamp pole are placed in place, the piston rod of the hydraulic cylinder extends to drive the lifting plate and the lifting strip to move upward. After the lifting strip is transmitted through the hinge strip and the transverse movement strip, it will drive the transverse movement plate to move outward, thereby expanding the distance between each pair of inner support columns and clamping the flange. At the same time, after the lifting strip is transmitted through the hinge strip and the linkage strip, it will drive the inner support block to move outward and clamp the street lamp pole.

[0019] 2. The positioning mechanism of the present invention can automatically position all the stiffening plates between the flange and the street lamp pole, avoiding manually placing all the stiffening plates one by one. After a pair of stiffening plates are placed in place, the piston rods of a pair of cylinders I extend to drive this pair of stiffening plates to turn inward and downward by a certain degree, and then the piston rod of the double-axis cylinder I extends to drive this pair of stiffening plates to move inward by a certain distance. At this time, this pair of stiffening plates are exactly located on the left and right sides of the flange and the street lamp pole.

[0020] 3. The present invention can automatically weld the flange, street light pole and stiffening plate together through the welding mechanism, avoiding manual wearing of protective gear to complete welding. The piston rod of the double-axis cylinder 2 is extended and drives the welding gun 2 to move between the clamped flange and the street light pole, and then the motor drives the flange and the street light pole to slowly rotate half a circle. During the rotation, the flange and the street light pole are welded together by the left and right welding guns 2. The piston rod of the cylinder 2 is extended and drives the welding gun 1 to move to the two sides of the positioned stiffening plate. During the movement, the stiffening plate is first welded to the flange by the left and right pairs of welding guns 1, and then the stiffening plate is welded to the street light pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic structural diagram of the overall front view of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of the workbench in the present invention.

[0024] Figure 4 , Figure 5 Schematic diagrams of the structure of the clamping mechanism of the present invention from different perspectives.

[0025] Figure 6 It is a structural schematic diagram of the positioning mechanism in the present invention.

[0026] Figure 7 , Figure 8 Schematic diagrams of the structure of the clamping mechanism of the present invention from different perspectives.

[0027] Fig. 9 This is a schematic diagram of the structure of the flange, street light pole and stiffening plate.

[0028] in:

[0029] 10-working table; 10a-through slot 1; 10b-through slot 2; 11-support frame; 12-support foot;

[0030] 20-clamping mechanism; 201-mounting plate; 201a-mounting slot 1; 201b-mounting slot 2; 202-mounting rod; 203-inner support column; 204-compression spring 1; 205-connecting column; 206-connecting plate; 207-hydraulic cylinder; 208-lifting plate; 209-lifting bar; 210-hinged bar; 211-transverse bar; 212-transverse plate; 213-linkage bar; 214-inner support block; 214a-smoking hole; 214b-smoking slot; 215-support plate; 216-motor seat; 217-motor; 218-flange seat;

[0031] 30-positioning mechanism; 301-double-axis cylinder 1; 302-transverse frame; 303-cylinder 1; 304-hinge seat 1; 305-hinge piece 1; 306-hinge seat 2; 307-hinge piece 2; 308-positioning plate; 308a-positioning groove; 309-magnet strip;

[0032] 40-welding mechanism; 401-fixed plate; 402-cylinder 2; 403-transverse frame; 404-hinged frame; 405-linkage frame; 406-compression spring 2; 407-oblique frame plate; 408-welding gun 1; 409-cross plate; 410-double-axis cylinder 2; 411-cross frame plate; 412-welding gun 2; 413-side mounting column; 414-side mounting plate; 414a-guide groove; 415-guide column; 416-guide sleeve;

[0033] 50-flange; 50a-mounting hole;

[0034] 60-street light pole;

[0035] 70-Stiffener plate. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] like Figures 1 to 9 As shown, an automatic welding device for the bottom flange of a street light pole includes a workbench 10, a clamping mechanism 20, a positioning mechanism 30 and a welding mechanism 40, wherein:

[0038] A circular through groove 10a is centrally provided on the workbench 10, and rectangular through grooves 10b are symmetrically provided on the left and right sides of the through groove 10a. A support frame 11 is fixed to the lower side of the workbench 10, and a plurality of support legs 12 are evenly connected to the lower side of the support frame 11.

[0039] The clamping mechanism 20 is centrally arranged in the middle of the workbench 10 and includes a mounting plate 201, an inner support column 203, a hydraulic cylinder 207 and an inner support block 214. The inner support column 203 and the inner support block 214 are driven by the hydraulic cylinder 207 to move synchronously, and the flange 50 and the street light pole 60 are coaxially clamped above the mounting plate 201;

[0040] The positioning mechanism 30 is symmetrically arranged at the front and rear sides of the workbench 10 and includes a double-axis cylinder 301, a cylinder 303 and a positioning plate 308. The double-axis cylinder 301 and the cylinder 303 drive a pair of positioning plates 308 to move synchronously, and synchronously position a pair of stiffening plates 70 between the flange 50 and the street light pole 60.

[0041] The welding mechanism 40 is symmetrically arranged on the left and right sides of the workbench 10 and includes a cylinder 2 402, a welding gun 1 408, a double-axis cylinder 2 410 and a welding gun 2 412. The double-axis cylinder 2 410 drives the welding gun 2 412 to move inward and weld the flange 50 to the street light pole 60. The cylinder 2 402 drives a pair of welding guns 1 408 to move inward and weld the stiffening plate 70 between the flange 50 and the street light pole 60.

[0042] In this embodiment, the mounting plate 201 is coaxially arranged in the through groove 10a, a circular mounting groove 101a is centrally arranged on the mounting plate 201, and fan-shaped mounting grooves 201b are evenly distributed around the mounting groove 101a, each mounting groove 201b is inserted with an arc-shaped mounting rod 202, and a pair of inner support columns 203 are slidably connected to the mounting rod 202, and the mounting rod 202 is sleeved with a pair of compression springs 104 on the outer side of each pair of inner support columns 203, and a connecting plate 206 is coaxially connected to the lower side of the mounting plate 201 through a plurality of connecting columns 205, and the hydraulic cylinder 207 is vertically upwardly mounted on the connecting plate 20 6, and a lifting plate 208 is horizontally connected to the end of its piston rod, and a plurality of lifting bars 209 are evenly welded on the edge of the lifting plate 208, each lifting bar 209 is hinged with a pair of hinged bars 210, and the upper end of each pair of hinged bars 210 is hinged with a transverse bar 211, and the outer end of the transverse bar 211 is horizontally welded with an isosceles triangle transverse plate 212, and the transverse plates 212 located on the same side are inserted between a pair of inner support columns 203, and the middle part of each pair of hinged bars 210 is hinged with an "L"-shaped linkage bar 213, and a fan-shaped inner support block 214 is installed on the upper part of the linkage bar 213, and all the inner support blocks 214 are located in the installation groove 1 201a. When the flange 50 and the street light pole 60 are put in place, the piston rod of the hydraulic cylinder 207 is extended and drives the lifting plate 208 and the lifting bar 209 to move upward. After the lifting bar 209 is driven by the hinge bar 210 and the transverse bar 211, it will drive the transverse plate 212 to move outward, thereby expanding the distance between each pair of inner support columns 203 and clamping the flange 50. At the same time, after the lifting bar 209 is driven by the hinge bar 210 and the linkage bar 213, it will drive the inner support block 214 to move outward and clamp the street light pole 60.

[0043] In this embodiment, the first double-axis cylinder 301 is horizontally and inwardly installed on the upper side of the workbench 10, and a "U"-shaped transverse movement frame 302 is connected to the end of its piston rod. A pair of the first cylinders 303 are provided and are correspondingly installed at both ends of the transverse movement frame 302. The first cylinders 303 are horizontally and inwardly arranged, and a first hinge seat 304 is connected to the end of their piston rods. A first "L"-shaped hinge member 305 is hinged on the first hinge seat 304. The transverse movement frame 302 is connected with a second hinge seat 306 under each of the first cylinders 303, and a second "one"-shaped hinge member 307 is hinged on the second hinge seat 306. The second hinge members 307 on the same side are hinged with the first hinge members 305. A pair of positioning plates 308 are provided and are correspondingly installed on the two first hinge members 305. A right-angled triangle positioning groove 308a is provided on the positioning plate 308, and a pair of magnet bars 309 are embedded on the groove wall of the positioning groove 308a. When a pair of stiffening plates 70 are placed in place, the piston rods of the pair of the first cylinders 303 extend to drive the pair of stiffening plates 70 to turn inwardly and downwardly by 90 degrees, and then the piston rod of the first double-axis cylinder 301 extends to drive the pair of stiffening plates 70 to move inwardly by a certain distance. At this time, the pair of stiffening plates 70 are exactly located on the left and right sides of the flange 50 and the street lamp pole 60.

[0044] In this embodiment, the second cylinder 402 is horizontally and inwardly mounted on the lower side of the workbench 10 through a fixed plate 401, and a "U"-shaped transverse movement frame 403 is connected to the end of its piston rod. A pair of hinge frames 404 are hinged on the front and rear sides of the transverse movement frame 403. The upper ends of each pair of hinge frames 404 are hinged to a linkage frame 405, and a pair of second compression springs 406 are connected between the linkage frame 405 and the transverse movement frame 403. A slanting frame plate 407 is horizontally connected to the upper side of the linkage frame 405. A pair of first welding torches 408 are provided and symmetrically mounted on the two slanting frame plates 407. The double-acting cylinder 410 is horizontally and inwardly mounted between the two slanting frame plates 407 through a cross plate 409, and a transverse frame plate 411 is horizontally connected to the end of its piston rod. The second welding torch 412 is mounted on the transverse frame plate 411 through a clamp. A side mounting column 413 is vertically connected to the middle of the linkage frame 405. A pair of side mounting plates 414 are symmetrically connected to the front and rear of the groove wall of the second through groove 10b, and an "L"-shaped guiding groove 414a is provided on the side mounting plates 414. The side mounting columns 413 on the same side are slidably mounted in the guiding groove 414a. By extending the piston rod of the double-acting cylinder 410 to drive the second welding torch 412 to move between the clamped flange 50 and the street lamp pole 60, and then driving the mounting plate 101, the flange 50 and the street lamp pole 60 to slowly rotate 180 degrees by the motor 217. During the rotation, the flange 50 and the street lamp pole 60 are welded together by the left and right second welding torches 412. By extending the piston rod of the cylinder 402 to drive the first welding torch 408 to move to both sides of the positioned stiffening plate 70. During the movement, the left and right pairs of first welding torches 408 first weld the stiffening plate 70 to the flange 50, and then weld the stiffening plate 70 to the street lamp pole 60.

[0045] In this embodiment, the inner support block 214 adopts a hollow internal structure. A smoke suction hole 214a is provided on the upper side of the inner support block 214 and is connected to the suction port of the negative pressure fan. Smoke suction grooves 214b are evenly distributed on the lower side of the inner support block 214. The smoke entering the street lamp pole 60 can be sucked into the inner support block 214 through the smoke suction grooves 214b, and then discharged by the negative pressure fan through the smoke suction hole 214a, which can reduce the smoke concentration in the working environment to a certain extent.

[0046] In this embodiment, a support plate 215 is horizontally mounted in the middle of the support frame 11, and a motor 217 is centrally mounted above the support plate 215 through a motor base 216. The output end of the motor 217 is coaxially connected to the lower side of the connecting plate 206 through a flange seat 218. The motor 217 can drive the mounting plate 201 to rotate, and then synchronously drive the clamped flange 50 and the street lamp pole 60 to rotate, which is convenient for forming a circumferential weld between the flange 50 and the street lamp pole 60 by the second welding torch 412, and is also convenient for welding a circle of stiffening plates 70 between the flange 50 and the street lamp pole 60 by the first welding torch 408.

[0047] In this embodiment, a pair of guide posts 415 are symmetrically connected to the transverse frame 403, and the guide posts 415 are slidably connected to the fixed plate 401 through guide sleeves 416. The above structure can improve the structural strength of the welding mechanism 40 and at the same time, limit the deflection or bending of the piston rod of the second cylinder 402.

[0048] The working principle of this automatic welding equipment for the bottom flange of street light poles:

[0049] S1: ① Place the flange 50 horizontally on the upper side of the mounting plate 101, and let each mounting hole 50a on the flange 50 be correspondingly sleeved on the outer side of each pair of inner support columns 203; ② Place the street light pole 60 vertically on the upper side of the mounting plate 101, and let the street light pole 60 be sleeved on the outer side of all inner support blocks 214; ③ Place four stiffening plates 70 on the upper side of each positioning groove 308a, and firmly adsorb the stiffening plates 70 through the magnet strip 309; ④ The staff leaves the welding station;

[0050] S2: The piston rod of the hydraulic cylinder 207 is extended and drives the lifting plate 208 and the lifting bar 209 to move upward. After the lifting bar 209 is driven by the hinge bar 210 and the transverse bar 211, it drives the transverse plate 212 to move outward, thereby expanding the distance between each pair of inner support columns 203 and clamping the flange 50. At the same time, after the lifting bar 209 is driven by the hinge bar 210 and the linkage bar 213, it drives the inner support block 214 to move outward and clamp the street light pole 60.

[0051] S3: The piston rods of the left and right double-axis cylinders 410 are extended to drive the corresponding welding guns 412 to move between the clamped flange 50 and the street light pole 60, and then the motor 217 drives the mounting plate 101, the flange 50 and the street light pole 60 to slowly rotate 180 degrees. During the rotation, the flange 50 and the street light pole 60 are welded together by the left and right welding guns 412. After welding, the piston rods of the left and right double-axis cylinders 410 are contracted to drive the corresponding welding guns 412 to move to the initial position.

[0052] S4: The piston rods of the front pair of cylinders 303 are extended and driven to turn the pair of stiffening plates 70 backward and downward 90 degrees, and then the piston rods of the front double-axis cylinders 301 are extended and driven to move the pair of stiffening plates 70 backward for a distance. At this time, the pair of stiffening plates 70 are just located on the left and right sides of the flange 50 and the street light pole 60;

[0053] S5: The piston rods of the cylinders 2 402 on the left and right sides are extended and driven to move the corresponding welding guns 1 408 to the two sides of the positioned stiffening plate 70. During the movement, the stiffening plate 70 is first welded to the flange 50 by the two pairs of welding guns 1 408 on the left and right sides, and then the stiffening plate 70 is welded to the street lamp pole 60. After welding, the piston rods of the cylinders 2 402 on the left and right sides are extended and driven to move the corresponding welding guns 1 408 to the initial position, and then the piston rods of the front double-axis cylinder 1 301 and a pair of cylinders 1 303 are contracted and driven to move the empty positioning plate 308 to the initial position;

[0054] S6: The motor 217 drives the mounting plate 101, the flange 50, the street light pole 60 and a pair of stiffening plates to rotate 90 degrees quickly;

[0055] S7: The piston rods of the rear pair of cylinders 303 are extended and driven to move the pair of stiffening plates 70 forward and downward by 90 degrees, and then the piston rods of the rear double-axis cylinders 301 are extended and driven to move the pair of stiffening plates 70 forward for a distance. At this time, the pair of stiffening plates 70 are just located on the left and right sides of the flange 50 and the street light pole 60;

[0056] S8: The piston rods of the cylinders 2 402 on the left and right sides are extended and driven to move the corresponding welding guns 1 408 to the two sides of the positioned stiffening plate 70. During the movement, the stiffening plate 70 is first welded to the flange 50 by the two pairs of welding guns 1 408 on the left and right sides, and then the stiffening plate 70 is welded to the street light pole 60. After welding, the piston rods of the cylinders 2 402 on the left and right sides are extended and driven to move the corresponding welding guns 1 408 to the initial position, and then the piston rods of the front double-axis cylinder 1 301 and a pair of cylinders 1 303 are contracted and driven to move the empty positioning plate 308 to the initial position;

[0057] S9: The piston rod of the hydraulic cylinder 207 contracts and drives the lifting plate 208 and the lifting bar 209 to move downward. After the lifting bar 209 is driven by the hinge bar 210 and the transverse bar 211, it will drive the transverse plate 212 to move inward, and the distance between each pair of inner support columns 203 will be reduced and will be out of contact with the flange 50. At the same time, after the lifting bar 209 is driven by the hinge bar 210 and the linkage bar 213, it will drive the inner support block 214 to move inward and out of contact with the street light pole 60, and finally remove the welded product.

[0058] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An automatic welding device for the bottom flange of a street light pole, characterized in that: It comprises a workbench (10), a clamping mechanism (20), a positioning mechanism (30) and a welding mechanism (40), wherein: A circular through groove 1 (10a) is centrally provided on the workbench (10), and rectangular through grooves 2 (10b) are symmetrically provided on the left and right sides of the through groove 1 (10a); a support frame (11) is fixed on the lower side of the workbench (10), and a plurality of support legs (12) are evenly connected to the lower side of the support frame (11); The clamping mechanism (20) is centrally arranged in the middle of the workbench (10) and comprises a mounting plate (201), an inner support column (203), a hydraulic cylinder (207) and an inner support block (214). The hydraulic cylinder (207) drives the inner support column (203) and the inner support block (214) to move synchronously, and the flange (50) and the street light pole (60) are coaxially clamped above the mounting plate (201); The positioning mechanism (30) is symmetrically arranged on the front and rear sides of the workbench (10) and comprises a double-axis cylinder (301), a cylinder (303) and a positioning plate (308). The double-axis cylinder (301) and the cylinder (303) drive a pair of positioning plates (308) to move synchronously, and synchronously position a pair of stiffening plates (70) between the flange (50) and the street light pole (60); The welding mechanism (40) is symmetrically arranged on the left and right sides of the workbench (10) and comprises a second cylinder (402), a first welding gun (408), a second double-axis cylinder (410) and a second welding gun (412). The second double-axis cylinder (410) drives the second welding gun (412) to move inward and weld the flange (50) to the street light pole (60). The second cylinder (402) drives a pair of first welding guns (408) to move inward and weld the stiffening plate (70) between the flange (50) and the street light pole (60). The mounting plate (201) is coaxially arranged in the first through groove (10a). A circular first mounting groove (201a) is provided in the center of the mounting plate (201), and fan-shaped second mounting grooves (201b) are evenly distributed around the first mounting groove (201a). An arc-shaped mounting rod (202) is inserted into each second mounting groove (201b), and a pair of inner support columns (203) are slidably connected to the mounting rod (202). A pair of first compression springs (204) are sleeved outside each pair of inner support columns (203) on the mounting rod (202). The lower part of the mounting plate (201) is coaxially connected to a connecting plate (206) through a plurality of connecting columns (205). The hydraulic cylinder (207) is vertically upwardly mounted in the middle of the connecting plate (206), and a lifting plate (208) is horizontally connected to the end of its piston rod. A plurality of lifting strips (209) are evenly welded to the edge of the lifting plate (208). A pair of hinge strips (210) are hinged to each lifting strip (209). The upper ends of each pair of hinge strips (210) are hinged to a transverse movement strip (211). An isosceles triangular transverse movement plate (212) is horizontally welded to the outer end of the transverse movement strip (211). The transverse movement plates (212) on the same side are inserted between a pair of inner support columns (203). The middle parts of each pair of hinge strips (210) are hinged to an "L"-shaped linkage strip (213), and a fan-shaped inner support block (214) is mounted on the upper part of the linkage strip (213). All the inner support blocks (214) are located in the first mounting groove (201a). The first double-axis cylinder (301) is horizontally and inwardly mounted on the upper side of the workbench (10), and a "U"-shaped transverse movement frame (302) is connected to the end of its piston rod. A pair of first cylinders (303) are provided and correspondingly mounted at both ends of the transverse movement frame (302). The first cylinders (303) are horizontally and inwardly arranged, and a hinge seat one (304) is connected to the end of its piston rod. An "L"-shaped hinge member one (305) is hinged to the hinge seat one (304). The transverse movement frame (302) is connected to a hinge seat two (306) below each first cylinder (303), and an "-" shaped hinge member two (307) is hinged to the hinge seat two (306). The hinge member two (307) on the same side is hinged to the hinge member one (305). A pair of positioning plates (308) are provided and correspondingly mounted on the two hinge members one (305). A right-angled triangular positioning groove (308a) is provided on the positioning plate (308), and a pair of magnet strips (309) are inlaid on the groove wall of the positioning groove (308a). The second cylinder (402) is horizontally and inwardly installed on the lower side of the workbench (10) through a fixed plate (401), and a "U"-shaped transverse movement frame (403) is connected to the end of its piston rod. A pair of articulated frames (404) are articulated on the front and rear sides of the transverse movement frame (403). The upper ends of each pair of articulated frames (404) are articulated with a linkage frame (405), and a pair of second compression springs (406) are connected between the linkage frame (405) and the transverse movement frame (403). An inclined frame plate (407) is obliquely connected to the upper side of the linkage frame (405). A pair of first welding torches (408) are provided and symmetrically installed on two inclined frame plates (407). The double-axis second cylinder (410) is horizontally and inwardly installed between two inclined frame plates (407) through a cross plate (409), and a transverse frame plate (411) is horizontally connected to the end of its piston rod. The second welding torch (412) is installed on the transverse frame plate (411) through a clamp. A side mounting column (413) is vertically connected to the middle of the linkage frame (405). A pair of side mounting plates (414) are symmetrically connected to the front and rear on the groove wall of the second through groove (10b), and an "L"-shaped guiding groove (414a) is provided on the side mounting plate (414). The side mounting columns (413) on the same side are slidably installed in the guiding groove (414a).

2. The automatic welding equipment for the bottom flange of a street light pole according to claim 1 is characterized in that: The inner support block (214) adopts a hollow internal structure. A smoking hole (214a) is provided on the upper side of the inner support block (214) and is connected to the suction port of the negative pressure fan. Smoking grooves (214b) are evenly distributed on the lower side of the inner support block (214).

3. The automatic welding equipment for the bottom flange of a street light pole according to claim 1 is characterized in that: A support plate (215) is horizontally installed in the middle of the support frame (11), and a motor (217) is centrally installed above the support plate (215) through a motor base (216). The output end of the motor (217) is coaxially connected to the lower side of the connecting plate (206) through a flange base (218).

4. The automatic welding equipment for the bottom flange of a street light pole according to claim 1 is characterized in that: A pair of guide columns (415) are symmetrically connected to the front and rear on the transverse movement frame (403), and the guide columns (415) are slidably connected to the fixed plate (401) through guide sleeves (416).

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