Purlin flat welding device

Abstract

The present invention relates to the technical field of welding equipment and discloses a purlin plate flat welding device, comprising a base plate, a processing table for placing a workpiece installed on one side of the top of the base plate, clamping fixtures for fixing the workpiece installed at both ends of the top of the processing table, and a welding assembly installed on the top of the base plate on one side of the processing table. The welding assembly includes an electric control box installed on one side of the top of the base plate, a mechanical arm for position adjustment installed on the top of the electric control box, and a welding gun installed on the bottom of one side of the mechanical arm; a measuring box is installed on the top of the processing table between two clamping fixtures, a measuring assembly for measuring the size of the workpiece weld is installed on the top of the measuring box, and an air supply assembly is also installed in the measuring box, and the air pressure value at the air supply assembly varies with the measurement result of the measuring assembly. By setting the control assembly and the measuring assembly, the current and voltage on the welding gun are controlled to adapt to different weld widths and required penetration depths.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a purlin plate flat welding device. Background Art

[0002] Purlins are important supporting components in building structures and are mainly used in roof and wall systems. They are responsible for transferring loads, fixing covering materials and maintaining structural stability. During their installation, welding equipment is required.

[0003] However, current purlin welding operations face significant limitations in equipment parameter adjustment: welding current and voltage can only be manually set based on operator experience, lacking an intelligent control mechanism based on weld width and penetration requirements. Specifically, inaccurate current regulation can easily lead to two types of defects: insufficient current, which prevents weld penetration from reaching the required value, resulting in insufficient weld strength; excessive current, which can burn through the parent material. Therefore, the present invention provides a purlin flat welding device to address these issues. Summary of the Invention

[0004] The object of the present invention is to provide a purlin plate flat welding device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A purlin flat welding device comprises a base plate, a processing table for placing a workpiece is installed on one side of the top of the base plate, clamping fixtures for fixing the workpiece are installed at both ends of the top of the processing table, and a welding assembly is installed on the top of the base plate on one side of the processing table, the welding assembly comprises an electric control box installed on one side of the top of the base plate, a mechanical arm for position adjustment is installed on the top of the electric control box, a welding gun is installed on the bottom of one side of the mechanical arm, and the mechanical arm and the welding gun are connected to the electric controller inside the electric control box through electrical signals; a measuring box is installed on the top of the processing table between the two clamping fixtures, a measuring assembly for measuring the size of the workpiece weld is installed on the top of the measuring box, and an air supply assembly is also installed in the measuring box, and the air pressure value at the air supply assembly varies with the measurement result of the measuring assembly; a control box is fixedly connected to one side of the top of the processing table, and a control assembly for adjusting the current and voltage on the welding gun is installed on the inner wall of the control box, and the air supply assembly is connected to the control assembly.

[0007] As a further solution of the present invention, the measuring assembly includes a limit slider, a support rod, an upper measuring plate and a lower measuring plate. The limit slider is slidably connected to the inner wall of the measuring box, the support rod is installed in the middle position of the top of the limit slider, and the top of the support rod is fixedly connected to the top plate. The upper measuring plate and the lower measuring plate are both slidably connected to the outer wall of the support rod, and the upper measuring plate is located at the top position of the lower measuring plate.

[0008] As a further solution of the present invention, the air supply assembly includes a sliding seat, a sleeve ring and an exhaust pipe. The sliding seat is installed on the outer wall of the opposite side of the limit slider and the top plate. The inner wall of the sliding seat is slidably connected with an extension rod. The extension rod located on the opposite side of the limit slider and the top plate is respectively fixedly connected to one side of the lower measuring plate and the upper measuring plate. The sleeve ring is fixedly connected to the opposite side of the limit slider and the top plate. A connecting pipe is sleeved on the inner wall of the sleeve ring. Both ends of the exhaust pipe are respectively connected to the sliding seat and the connecting pipe, and the connecting pipes at both ends are connected to the first delivery pipe.

[0009] As a further solution of the present invention, a fixed plate is fixedly connected to the middle position of the inner wall of the sliding seat, and a sliding rod is slidably connected to the axial position of the fixed plate. A first piston plate and a second piston plate are respectively installed at both ends of the sliding rod. The first piston plate and the second piston plate are both slidably connected to the inner wall of the sliding seat, the second piston plate is fixedly connected to the bottom end of the extension rod, and the connection between the exhaust pipe and the inner wall of the sliding seat is located between the fixed plate and the first piston plate.

[0010] As a further solution of the present invention, the measuring assembly also includes a measuring ring, a first sleeve and a measuring bead. The measuring ring is fixedly connected to the middle position of the outer wall of the top plate and is located between the upper measuring plate and the lower measuring plate. The first sleeve is fixedly connected to both ends of the measuring ring. The inner wall of the first sleeve is slidably connected to the third piston plate. A sleeve rod is installed at one end of the third piston plate. The measuring bead is fixedly connected to the tail end of the sleeve rod. A spring is installed between the first sleeve and the third piston plate.

[0011] As a further solution of the present invention, the air supply assembly also includes a second delivery pipe, which consists of a semicircular pipe and three branch pipe assemblies connected to the two ends and the middle of the semicircular pipe. The semicircular pipe of the second delivery pipe is installed on the inner wall of the measuring ring, and the branch pipes at both ends of the second delivery pipe are connected to the inner wall of the first sleeve.

[0012] As a further solution of the present invention, the control component includes a water storage cylinder and a water tank. The two water storage cylinders are installed at the two ends of the top of the control box. An isolation disk is fixedly connected to the middle of the inner wall of the water storage cylinder. A plurality of linearly arranged water holes are opened in the middle position of the isolation disk. The water tank is installed on the inner wall of the bottom of the water storage cylinder. A water inlet channel is installed in the axial position of the water tank. The top of the water inlet channel is trumpet-shaped and is located at the bottom of the water hole. The top of the water tank is connected to a plurality of circumferentially arranged diversion pipes.

[0013] As a further solution of the present invention, the control component also includes a sealing plate and an adjusting tube. The bottom of the isolation disk is located at both ends of the water hole and is fixedly connected with fixed blocks. A first guide rod is fixedly connected between the fixed blocks. The sealing plate is slidably connected to the outer wall of the first guide rod. The adjusting tube is fixedly connected to the outer wall of one of the fixed blocks. A fifth piston plate is slidably connected to the inner wall of the adjusting tube. A connecting rod is fixedly connected between the fifth piston plate and the sealing plate. The tail ends of the first and second delivery pipes are connected to a third delivery pipe, and the third delivery pipe is connected to the adjusting pipe.

[0014] As a further solution of the present invention, one of the diversion pipes is slidingly connected to the inner wall with a float plate, an adjusting rod is installed at the bottom end of the float plate, and the inner walls on both sides of the control box are fixedly connected with a first sliding resistor and a second sliding resistor, respectively. The adjusting rods at both ends pass through the water tank and the water cylinder and are fixedly connected to the sliding ends of the first sliding resistor and the second sliding resistor, respectively. The first sliding resistor is connected in series in the circuit of the welding gun, and the second sliding resistor is connected in parallel in the circuit of the welding gun.

[0015] As a further solution of the present invention, a second motor is installed on one side of the top of the water tank, a second screw is installed at the output end of the second motor, and a sliding disk is slidably connected to the inner wall of the sliding seat, the second screw is threadedly connected to the inner wall of the sliding disk, and a plurality of support rods arranged in a circle are fixedly connected to the top of the sliding disk, the lengths of the support rods increase at equal intervals, and a sealing disk is fixedly connected to the top of the support rods, and the sealing disk is slidably connected to the inner wall of the diversion pipe.

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

[0017] 1. When the present invention is used, the control component and the measuring component are provided to measure the required penetration depth at the weld, and the flow rate of water entering the water storage tank is controlled according to the measurement results, the resistance of the first sliding resistor is controlled, and the current on the welding gun is controlled to adapt to the required penetration depth of different welds.

[0018] 2. When the present invention is used, the width of the weld can be measured through the control component and the measuring component. The resistance of the second sliding resistor is controlled by the flow rate of water entering the water tank, and then the voltage on the welding gun is controlled to adapt to welds of different widths.

[0019] 3. When the present invention is used, the sliding plate, support rod and sealing plate are provided, so that the sealing plate can be moved out of the diversion pipe within a unit time, and the water in the water tank can be evenly divided, so that the average width of the weld and the required penetration depth can be measured, thereby improving the accuracy of current and voltage control.

[0020] 4. When the present invention is used, the pressure-bearing ball and the rotating block are provided, and the rotating block can be rotated by balancing the air pressure at both ends of the lower measuring plate, so that the lower measuring plate and the workpiece are fitted together, thereby avoiding tilting of the lower measuring plate and the workpiece, which affects the accuracy of measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a structural diagram of a purlin flat welding device.

[0022] Figure 2 The figure is a schematic diagram of the structure of a measuring box in a purlin flat welding device.

[0023] Figure 3 The figure is a schematic diagram of the structure inside the measuring box in a purlin flat welding device.

[0024] Figure 4 The figure is a cross-sectional view of a measuring component in a purlin flat welding device.

[0025] Figure 5 The figure is a cross-sectional view of the sliding seat and extension rod in a purlin flat welding device.

[0026] Figure 6 The figure is a cross-sectional view of the measuring ring in a purlin flat welding device.

[0027] Figure 7 The figure is a cross-sectional view of the lower measuring plate in a purlin flat welding device.

[0028] Figure 8 The figure is a cross-sectional view of the rotating seat in a purlin flat welding device.

[0029] Figure 9 This is a cross-sectional view of the control box in a purlin flat welding device.

[0030] Figure 10 The figure is a cross-sectional view of the water storage cylinder in a purlin flat welding device.

[0031] Figure 11 The figure is a schematic diagram of the structure of a sliding plate in a purlin flat welding device.

[0032] Figure 12 The figure is a schematic diagram of the structure of the sealing plate in a flat welding device for purlin plates.

[0033] In the figure: 100, base plate; 110, electric control box; 111, robotic arm; 112, welding gun; 120, processing table; 130, clamping tool;

[0034] 200, measuring box; 201, magnet block; 210, sliding chamber; 211, limiting slider; 212, guide block; 220, first motor; 221, first screw rod; 230, top plate; 231, support rod; 240, upper measuring plate; 241, lower measuring plate; 250, sliding seat; 251, sleeve ring; 252, first delivery pipe; 253, connecting pipe; 254, exhaust pipe; 255, extension rod; 256, fixed plate; 257, sliding rod; 258, first piston plate; 259, second piston plate; 260, measuring ring; 261, second delivery pipe; 262, first sleeve; 263, third piston plate; 264, sleeve rod; 265, measuring bead; 266, spring;

[0035] 270, rotating seat; 271, rotating pin; 272, connecting plate; 273, rotating block; 280, second sleeve; 281, fourth piston plate; 282, pressure-bearing ball; 283, first air pipe; 284, second air pipe; 285, third air pipe;

[0036] 300, control box; 301, partition plate; 310, first sliding resistor; 311, second sliding resistor; 320, water storage cylinder; 321, vent pipe; 322, isolation plate; 323, water hole; 330, water pump; 331, water inlet pipe; 332, return pipe; 340, blocking plate; 341, third delivery pipe; 342, fixing block; 343, first guide rod; 344, regulating pipe; 345, fifth piston plate; 346, connecting rod; 350, water storage tank; 351, diverter pipe; 352, water inlet channel; 353, buoy plate; 354, regulating rod;

[0037] 360. Second motor; 361. Sliding disk; 362. Second screw rod; 363. Second guide rod; 364. Support rod; 365. Sealing disk. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 efforts are within the scope of protection of the present invention.

[0039] See also Figure 1In an embodiment of the present invention, a purlin flat welding device includes a base plate 100, a processing table 120 for placing a workpiece is installed on one side of the top of the base plate 100, and clamping fixtures 130 for fixing the workpiece are installed at both ends of the top of the processing table 120, and a welding assembly is installed on the top of the base plate 100 on one side of the processing table 120. The welding assembly includes an electric control box 110 installed on one side of the top of the base plate 100, a mechanical arm 111 for position adjustment is installed on the top of the electric control box 110, and a welding gun 112 is installed on the bottom of one side of the mechanical arm 111. The mechanical arm 111 and the welding gun 112 are connected to the electric controller inside the electric control box 110 through electrical signals. When welding is required, the electric control box 110 controls the mechanical arm 111 and the welding gun 112 to move to the weld seam and move with the weld seam, and starts the welding gun 112 to weld the weld seam of the workpiece;

[0040] See Figure 2 and Figure 9 A measuring box 200 is installed on the top of the processing table 120 between the two clamping fixtures 130. The measuring box 200 is set at the bottom of the workpiece. Magnet blocks 201 for adsorbing and fixing the workpiece are installed at the four corners of the top of the measuring box 200. The measuring box 200 supports the workpiece through the magnetic adsorption of the magnet blocks 201, thereby improving the stability of the workpiece during welding. A measuring component for measuring the size of the workpiece weld is installed on the top of the measuring box 200. The measuring component detects the width and penetration of the weld respectively. An air supply component is also installed in the measuring box 200. The air pressure value at the air supply component changes with the measurement result of the measuring component.

[0041] A control box 300 is fixedly connected to one side of the top of the processing table 120, and a partition plate 301 is installed in the middle of the control box 300. The partition plate 301 divides the interior of the control box 300 into two chambers. A control component for adjusting the current and voltage on the welding gun 112 is installed on the inner wall of the chamber. The gas supply component is connected to the control component, and the measurement results of the measuring component are transmitted to the control component through the gas supply component. The control component adjusts the current and voltage of the welding gun 112 according to the measurement results to adapt to the width and penetration depth of different welds.

[0042] See Figure 3The measuring assembly includes a limit slide 211, a support rod 231, an upper measuring plate 240 and a lower measuring plate 241. A limit slide is provided at the middle position of the top of the measuring box 200. Both ends of the bottom of the limit slide are provided with sliding cavities 210. The limit slide 211 is slidably connected to the inner wall of the limit slide at the measuring box 200. The two ends of the bottom of the limit slide 211 are fixedly connected with guide blocks 212. The guide blocks 212 are slidably connected to the inner wall of the sliding cavity 210. The sliding of the guide blocks 212 in the sliding cavity 210 limits the sliding direction of the limit slide 211. The support rod 231 is arranged Installed in the middle position of the top of the limit slider 211, the top of the support rod 231 is fixedly connected to the top plate 230, and the upper measuring plate 240 and the lower measuring plate 241 are both slidably connected to the outer wall of the support rod 231. The side walls of the upper measuring plate 240 and the lower measuring plate 241 are arc-shaped. The upper measuring plate 240 is located at the top position of the lower measuring plate 241. When measuring the workpiece, the weld of the workpiece is passed through the support rod 231. The upper measuring plate 240 and the lower measuring plate 241 are close to each other and abut against the upper and lower ends of the workpiece. The distance between the upper measuring plate 240 and the lower measuring plate 241 is the required penetration depth of the weld.

[0043] See Figure 4 and Figure 5 The air supply assembly includes a sliding seat 250, a sleeve ring 251 and an exhaust pipe 254. The sliding seat 250 is installed on the outer wall of the opposite side of the limiting slider 211 and the top plate 230. The inner wall of the sliding seat 250 is slidably connected with an extension rod 255. The extension rod 255 located on the opposite side of the limiting slider 211 and the top plate 230 is respectively fixedly connected to the lower measuring plate 241 and the side of the upper measuring plate 240. The sleeve ring 251 is fixedly connected to the opposite side of the limiting slider 211 and the top plate 230. A connecting pipe 253 is sleeved on the inner wall of the sleeve ring 251. The two ends of the exhaust pipe 254 are respectively connected to the sliding seat 250 and the connecting pipe 253. The connecting pipes 253 at both ends are connected to the first delivery pipe 252. The internal air pressure of the sliding seat 250 changes, and the gas is transported to the connecting pipe 253 through the exhaust pipe 254. The gas in the connecting pipes 253 at both ends can be transported through the first delivery pipe 252.

[0044] A fixed plate 256 is fixedly connected to the middle position of the inner wall of the sliding seat 250. The fixed plate 256 divides the two ends of the sliding seat 250 into two parts. The top chamber is used to drive the movement, and the bottom chamber is used to generate air pressure changes. The fixed plate 256 is slidably connected to the sliding rod 257 in the axial position. The first piston plate 258 and the second piston plate 259 are respectively installed at both ends of the sliding rod 257. The first piston plate 258 and the second piston plate 259 are both slidably connected to the inner wall of the sliding seat 250. The second piston plate 259 is fixedly connected to the bottom end of the extension rod 255. The space between the fixed plate 256 and the second piston plate 259 is filled with inert gas. The inert gas keeps the extension rod 255 in a stretched state. The upper measuring plate 240 and the lower measuring plate 241 are kept in contact with each other, and the connection point between the exhaust pipe 254 and the inner wall of the sliding seat 250 is located between the fixed plate 256 and the first piston plate 258. The upper measuring plate 240 and the lower measuring plate 241 are moved onto the workpiece, and the workpiece squeezes the arc-shaped surfaces of the upper measuring plate 240 and the lower measuring plate 241 apart. At this time, the upper measuring plate 240 and the lower measuring plate 241 are in contact with the two ends of the workpiece. The movement of the upper measuring plate 240 and the lower measuring plate 241 pushes the second piston plate 259 to slide in the sliding seat 250 through the extension rod 255. The second piston plate 259 drives the first piston plate 258 to move through the sliding rod 257, and the air pressure in the bottom chamber changes.

[0045] See Figure 6 The measuring assembly also includes a measuring ring 260, a first sleeve 262 and a measuring bead 265. The measuring ring 260 is fixedly connected to the middle position of the outer wall of the top plate 230 and is located between the upper measuring plate 240 and the lower measuring plate 241. A columnar fixing groove is provided at both ends of the measuring ring 260. The first sleeve 262 is fixedly connected to the inner wall of the fixing groove on the measuring ring 260. The inner wall of the first sleeve 262 is slidably connected to the third piston plate 263. The sliding of the third piston plate 263 in the first sleeve 262 adjusts the air pressure in the first sleeve 262. The third piston plate A sleeve rod 264 is installed at one end of 263, and a measuring bead 265 is fixedly connected to the tail end of the sleeve rod 264. A spring 266 is installed between the first sleeve 262 and the third piston plate 263. The top plate 230 passes through the weld, and the measuring ring 260 enters the weld. The inner wall of the weld squeezes the measuring bead 265, and the stress is transmitted to the spring 266 through the sleeve rod 264 and the first sleeve 262. The spring 266 contracts under the force. At this time, the third piston plate 263 slides in the first sleeve 262, and the gas in the first sleeve 262 is compressed by the third piston plate 263.

[0046] The air supply assembly also includes a second delivery pipe 261, which consists of a semicircular pipe and three branch pipe assemblies connected to the two ends and the middle of the semicircular pipe. The semicircular pipe of the second delivery pipe 261 is installed on the inner wall of the measuring ring 260. The branch pipes at both ends of the second delivery pipe 261 are connected to the inner wall of the first sleeve 262. The air pressure changes in the first sleeve 262 are collected into the semicircular pipe through the branch pipes at both ends, and then discharged from the middle branch pipe.

[0047] For more details, see Figure 7 and Figure 8 , a plurality of linearly arranged fixed grooves are provided at both ends of the top of the lower measuring plate 241, and the inner wall of the fixed groove is fixedly connected to the second sleeve 280, and the inner wall of the second sleeve 280 is slidably connected to the fourth piston plate 281, and the top of the fourth piston plate 281 is rotatably connected to the pressure-bearing ball 282, and the inner walls on both sides of the lower measuring plate 241 are fixedly connected to the second air pipe 284, the bottom end of the second sleeve 280 is fixedly connected to the first air pipe 283 connected to the second air pipe 284, and the bottom end of the second air pipe 284 is connected to the third air pipe 285, and the top of the limiting slider 211 is fixedly connected to the rotating seat 270, and the bottom end of the support rod 231 is fixedly connected to the rotating block 273, and the inner wall of the rotating seat 270 is fixedly connected to the rotating pin 271, and the rotating pin 271 is rotatably connected to the inner wall of the rotating block 273, and the rotating block 273 is provided with an arc. The outer wall of the rotating pin 271 is fixedly connected to a connecting plate 272 that is rotatably connected to the chamber, and the third air pipes 285 at both ends are respectively connected to the two ends of the chamber. Specifically, when the lower measuring plate 241 contacts the bottom of the workpiece and tilts, the pressure on the pressure-bearing ball 282 on one side increases, and the pressure-bearing ball 282 squeezes the gas in the second sleeve 280 through the fourth piston plate 281, and transports it to the chamber in the rotating block 273 through the second air pipe 284 and the third air pipe 285. At this time, the air pressure on one side of the chamber increases, which can push the rotating block 273 to rotate to one side around the rotating pin 271 until the air pressure at both ends is balanced. At this time, the pressure-bearing balls 282 on both sides are subjected to pressure balance, which can keep the lower measuring plate 241 flush with the workpiece, thereby avoiding errors in the measurement results caused by the tilt of the lower measuring plate 241.

[0048] See Figure 9 and Figure 10The control component includes a water storage cylinder 320 and a water storage tank 350. The two water storage cylinders 320 are installed at both ends of the top of the control box 300. A vent pipe 321 connected to the outside is installed on the top of the outer wall of the water storage cylinder 320. The vent pipe 321 keeps the air pressure at the top of the liquid surface connected to the external atmospheric pressure, so as to keep the pressure of the water consistent when it flows out, and avoid the water pressure from dropping as the liquid surface drops, which affects the stability of the outflow speed. An isolation disk 322 is fixedly connected to the middle of the inner wall of the water storage cylinder 320. A plurality of linearly arranged The water hole 323 is provided, and the water tank 350 is installed on the inner wall of the bottom of the water storage cylinder 320. A water inlet channel 352 is installed in the axial position of the water tank 350. The top of the water inlet channel 352 is trumpet-shaped and is located at the bottom of the water hole 323. Water falling from the water hole 323 enters the water tank 350 through the water inlet channel 352. The top of the water tank 350 is connected to multiple circumferentially arranged diversion pipes 351. Water enters the water tank 350 and is diverted to the diversion pipes 351. Under the action of water pressure, the multiple diversion pipes 351 are kept at the same liquid level.

[0049] See Figure 12 The control component also includes a blocking plate 340 and a regulating tube 344. The bottom of the isolation disk 322 is located at both ends of the water hole 323 and is fixedly connected to a fixed block 342. A first guide rod 343 is fixedly connected between the fixed blocks 342. The blocking plate 340 is slidably connected to the outer wall of the first guide rod 343. The blocking plate 340 fits the bottom of the isolation disk 322. The blocking plate 340 moves at the bottom of the isolation disk 322 to block different numbers of water holes 323, thereby controlling the water flow. The regulating tube 344 is fixedly connected to the outer wall of one of the fixed blocks 342, and the inner wall of the regulating tube 344 is slidably connected to the fifth piston plate 3 45. A connecting rod 346 is fixedly connected between the fifth piston plate 345 and the sealing plate 340. The connecting rod 346 is slidably connected to the inner wall of the fixed block 342. The tail ends of the first delivery pipe 252 and the second delivery pipe 261 are connected to the third delivery pipe 341. The third delivery pipe 341 is connected to the regulating pipe 344. The gas in the first delivery pipe 252 and the second delivery pipe 261 is transported to the inner wall of the regulating pipe 344 through the third delivery pipe 341. The fifth piston plate 345 is squeezed by the gas and moves in the regulating pipe 344, and drives the sealing plate 340 to move on the first guide rod 343 through the connecting rod 346.

[0050] See Figure 9 and Figure 10, a buoy plate 353 is slidably connected to the inner wall of one of the shunt pipes 351, and an adjusting rod 354 is installed at the bottom end of the buoy plate 353, and the inner walls on both sides of the control box 300 are fixedly connected to the first sliding resistor 310 and the second sliding resistor 311, (the first sliding resistor 310 and the second sliding resistor 311 are both existing technologies, and the resistance is changed by moving the sliding end thereon) The adjusting rods 354 at both ends pass through the water tank 350 and the water cylinder 320 and are fixedly connected to the sliding ends of the first sliding resistor 310 and the second sliding resistor 311 respectively. At the moving end, the first sliding resistor 310 is connected in series in the circuit of the welding gun 112, and the second sliding resistor 311 is connected in parallel in the circuit of the welding gun 112. The change in the liquid level in the shunt tube 351 drives the float plate 353 to rise through buoyancy, and the float plate 353 adjusts the resistance of the first sliding resistor 310 and the second sliding resistor 311 through the adjusting rod 354. When the resistance of the first sliding resistor 310 increases, the current on the welding gun 112 decreases, and vice versa. The resistance of the second sliding resistor 311 increases, and the voltage distributed on the welding gun 112 decreases, and vice versa.

[0051] See Figure 10 and Figure 11 A second motor 360 is installed on one side of the top of the water tank 350, and a second screw rod 362 is installed on the output end of the second motor 360. The bottom end of the second screw rod 362 is rotatably connected to the inner wall of the bottom of the water tank 350, and the inner wall of the sliding seat 250 is slidably connected to a sliding disk 361. The inner wall of the sliding seat 250 is fixedly connected to a second guide rod 363, and the sliding disk 361 is slidably connected to the outer wall of the second guide rod 363. The second guide rod 363 guides the movement of the sliding disk 361. The second screw rod 362 is threadedly connected to the inner wall of the sliding disk 361. A plurality of support rods 364 arranged in a circle are fixedly connected to the top of the sliding disk 361. The lengths of the support rods 364 increase at equal intervals, and the tops of the support rods 364 are fixedly connected There is a blocking plate 365, which is slidably connected to the inner wall of the diversion pipe 351. When water enters the water tank 350, the second motor 360 is turned on to drive the second screw rod 362 to rotate. The second screw rod 362 drives the threaded sliding plate 361 to slide in the sliding seat 250. The movement of the sliding plate 361 drives the support rod 364 and the blocking plate 365 to move. The length of the support rod 364 increases at equal intervals. The blocking plate 365 can be moved out of the inner wall of the diversion pipe 351 in sequence as the sliding plate 361 moves, and the blockage of the diversion pipe 351 is released. The water in the water tank 350 can enter the inner wall of the diversion pipe 351 in sequence over time and keep the liquid level level, so that the water in the water tank 350 can be evenly distributed.

[0052] For more details, see Figure 10A water pump 330 is fixedly connected to one side of the bottom of the water storage cylinder 320. The input end of the water pump 330 is equipped with a water inlet pipe 331 connected to the inner wall of the water tank 350, and the output end of the water pump 330 is equipped with a return pipe 332 connected to the inner wall of the top of the water storage cylinder 320. Specifically, when reflux is required, the water pump 330 is turned on to transport the water in the water tank 350 through the return pipe 332 to the top of the water storage cylinder 320 through the water inlet pipe 331.

[0053] The working principle of the present invention is as follows: when welding is required, the workpiece is clamped between two clamping fixtures 130, the electric control box 110 drives the mechanical arm 111 to move the welding gun 112 to the weld seam, the welding gun 112 is turned on and moves along with the mechanical arm 111 at the weld seam to perform welding;

[0054] Before welding, the first motor 220 drives the first screw rod 221 to move the limit slider 211 to one side of the workpiece and move along the workpiece. The upper measuring plate 240 and the lower measuring plate 241 are squeezed by the workpiece and are located at the upper and lower ends of the workpiece respectively. The movement of the upper measuring plate 240 and the lower measuring plate 241 drives the extension rod 255 and the second piston plate 259 to slide within the sliding seat 250. The sliding rod 257 drives the first piston plate 258 to move, generating a change in gas pressure. The gas is discharged from the first delivery pipe 252 through the exhaust pipe 254 and the connecting pipe 253.

[0055] At the same time, the measuring ring 260 follows the support rod 231 into the inner wall of the weld. Under the elastic force of the spring 266, the measuring bead 265 is driven to fit the weld. At this time, the third piston plate 263 slides in the first sleeve 262, generating a change in gas pressure, and the gas is transported through the second delivery pipe 261.

[0056] The gas from the first delivery pipe 252 and the second delivery pipe 261 is delivered to the regulating pipe 344 through the third delivery pipe 341 to squeeze the fifth piston plate 345. The fifth piston plate 345 is squeezed and moves by the gas and pushes the blocking plate 340 to move through the connecting rod 346. The blocking plate 340 adjusts the amount of water hole 323 exposed. At this time, the water flow rate is adjusted, and water falls from the water hole 323 through the water inlet channel 352 into the inner wall of the water tank 350. The second motor 360 is turned on to pass through the second wire. The rod 362 drives the sliding disk 361 to move, and the sliding disk 361 drives the sealing disk 365 to detach from the diversion pipe 351 in turn through the support rod 364. The water in the water tank 350 can be evenly divided by different numbers of diversion pipes 351 over time. The float plate 353 of one of the diversion pipes 351 moves under the action of buoyancy, and the sliding ends of the first sliding resistor 310 and the second sliding resistor 311 can be driven to move through the adjusting rod 354, and the current and voltage control in the connected welding gun 112 can be achieved.

[0057] When the present invention is used, the control component and the measuring component are set to measure the required penetration depth at the weld, and the flow rate of water entering the water tank 350 is controlled according to the measurement results, the resistance of the first sliding resistor 310 is controlled, and then the current on the welding gun 112 is controlled to adapt to the required penetration depth of different welds.

[0058] By setting up the control component and the measuring component, the width of the weld can be measured, and the resistance of the second sliding resistor 311 can be controlled by adjusting the flow rate of water entering the water tank 350, thereby controlling the voltage on the welding gun 112 to adapt to welds of different widths.

[0059] By setting the sliding plate 361, support rod 364 and sealing plate 365, the sealing plate 365 can be moved out of the diversion pipe 351 within a unit time, and the water in the water tank 350 can be evenly divided, so that the average width of the weld and the required penetration depth can be measured, thereby improving the accuracy of current and voltage control.

[0060] By providing the pressure-bearing ball 282 and the rotating block 273 , the rotating block 273 can be rotated by balancing the air pressure at both ends of the lower measuring plate 241 , so that the lower measuring plate 241 fits the workpiece, thereby preventing the lower measuring plate 241 and the workpiece from tilting and affecting the measurement accuracy.

[0061] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A purlin plate flat welding device, comprising a bottom plate (100), characterized in that: A processing table (120) for placing a workpiece is installed on one side of the top of the base plate (100), and clamping fixtures (130) for fixing the workpiece are installed at both ends of the top of the processing table (120). A welding assembly is installed on the top of the base plate (100) on one side of the processing table (120), and the welding assembly includes an electric control box (110) installed on one side of the top of the base plate (100), a mechanical arm (111) for position adjustment is installed on the top of the electric control box (110), and a welding gun (112) is installed on the bottom of one side of the mechanical arm (111). The mechanical arm (111) and the welding gun (112) are connected to the electric controller inside the electric control box (110) through electrical signals. A measuring box (200) is installed on the top of the processing table (120) between the two clamping fixtures (130), and a measuring assembly for measuring the size of the workpiece weld is installed on the top of the measuring box (200). The measuring assembly includes a limit slider (211), a support rod (231), an upper measuring plate (240) and a lower measuring plate (241). The limit slider (211) is slidably connected to the inner wall of the measuring box (200), the support rod (231) is installed at the middle position of the top of the limit slider (211), and the top of the support rod (231) is fixedly connected to the top plate (230). The upper measuring plate (240) and the lower measuring plate (241) are both slidably connected to the outer wall of the support rod (231), and the upper measuring plate (240) is located at the top position of the lower measuring plate (241). An air supply assembly is also installed in the measuring box (200), and the air pressure value at the air supply assembly changes with the measurement result of the measuring assembly; A control box (300) is fixedly connected to one side of the top of the processing table (120). A control component for adjusting the current and voltage on the welding gun (112) is installed on the inner wall of the control box (300). The air supply component is connected to the control component. The control component includes a water storage cylinder (320) and a water storage tank (350). The two water storage cylinders (320) are installed at both ends of the top of the control box (300). An isolation disk (322) is fixedly connected to the middle of the inner wall of the water storage cylinder (320). A plurality of linearly arranged water holes (323) are opened in the middle of the isolation disk (322). The water storage tank (350) is installed on the inner wall of the bottom of the water storage cylinder (320). A water inlet channel (352) is installed in the axial position of the water storage tank (350). The top of the water inlet channel (352) is trumpet-shaped and located at the bottom of the water hole (323). The top of the water storage tank (350) is connected to a plurality of circumferentially arranged diversion pipes (351).

2. A purlin flat welding device according to claim 1, characterized in that: The air supply assembly comprises a sliding seat (250), a sleeve ring (251) and an exhaust pipe (254). The sliding seat (250) is mounted on an outer wall of a side opposite to the limiting slider (211) and the top plate (230). An extension rod (255) is slidably connected to the inner wall of the sliding seat (250). The extension rod (255) located on the side opposite to the limiting slider (211) and the top plate (230) is fixedly connected to one side of the lower measuring plate (241) and the upper measuring plate (240), respectively. The sleeve ring (251) is fixedly connected to the side opposite to the limiting slider (211) and the top plate (230). A connecting pipe (253) is sleeved on the inner wall of the sleeve ring (251). Two ends of the exhaust pipe (254) are respectively connected to the sliding seat (250) and the connecting pipe (253). The connecting pipes (253) at both ends are connected to the first delivery pipe (252).

3. A purlin flat welding device according to claim 2, characterized in that: A fixed plate (256) is fixedly connected to the middle position of the inner wall of the sliding seat (250), and a sliding rod (257) is slidably connected to the axial position of the fixed plate (256). A first piston plate (258) and a second piston plate (259) are respectively installed at both ends of the sliding rod (257). The first piston plate (258) and the second piston plate (259) are both slidably connected to the inner wall of the sliding seat (250), and the second piston plate (259) is fixedly connected to the bottom end of the extension rod (255). The connection point between the exhaust pipe (254) and the inner wall of the sliding seat (250) is located between the fixed plate (256) and the first piston plate (258).

4. A purlin flat welding device according to claim 3, characterized in that: The measuring assembly further comprises a measuring ring (260), a first sleeve (262) and a measuring bead (265), wherein the measuring ring (260) is fixedly connected to the middle position of the outer wall of the top plate (230) and is located between the upper measuring plate (240) and the lower measuring plate (241), the first sleeve (262) is fixedly connected to both ends of the measuring ring (260), the inner wall of the first sleeve (262) is slidably connected to a third piston plate (263), one end of the third piston plate (263) is mounted with a sleeve rod (264), the measuring bead (265) is fixedly connected to the tail end of the sleeve rod (264), and a spring (266) is mounted between the first sleeve (262) and the third piston plate (263).

5. A purlin flat welding device according to claim 4, characterized in that: The air supply assembly further comprises a second delivery pipe (261), the second delivery pipe (261) comprising a semicircular pipe and three branch pipe assemblies connected to both ends and the middle of the semicircular pipe, the semicircular pipe of the second delivery pipe (261) being mounted on the inner wall of the measuring ring (260), and the branch pipes at both ends of the second delivery pipe (261) being in communication with the inner wall of the first sleeve (262).

6. The purlin flat welding device according to claim 1, characterized in that: The control assembly further comprises a blocking plate (340) and a regulating tube (344); the bottom of the isolation disc (322) is fixedly connected to fixed blocks (342) at both ends of the water hole (323); a first guide rod (343) is fixedly connected between the fixed blocks (342); the blocking plate (340) is slidably connected to the outer wall of the first guide rod (343); the regulating tube (344) is fixedly connected to the outer wall of one of the fixed blocks (342); a fifth piston plate (345) is slidably connected to the inner wall of the regulating tube (344); a connecting rod (346) is fixedly connected between the fifth piston plate (345) and the blocking plate (340); the tail ends of the first delivery tube (252) and the second delivery tube (261) are connected to a third delivery tube (341); and the third delivery tube (341) is connected to the regulating tube (344).

7. A purlin flat welding device according to claim 6, characterized in that: A buoy plate (353) is slidably connected to the inner wall of one of the shunt pipes (351), and an adjusting rod (354) is installed at the bottom end of the buoy plate (353). The inner walls of both sides of the control box (300) are fixedly connected to a first sliding resistor (310) and a second sliding resistor (311), respectively. The adjusting rods (354) at both ends pass through the water storage tank (350) and the water storage cylinder (320) and are fixedly connected to the sliding ends of the first sliding resistor (310) and the second sliding resistor (311), respectively. The first sliding resistor (310) is connected in series to the circuit of the welding gun (112), and the second sliding resistor (311) is connected in parallel to the circuit of the welding gun (112).

8. A purlin flat welding device according to claim 7, characterized in that: A second motor (360) is installed on one side of the top of the water storage tank (350), a second screw rod (362) is installed at the output end of the second motor (360), and a sliding disk (361) is slidably connected to the inner wall of the sliding seat (250), the second screw rod (362) is threadedly connected to the inner wall of the sliding disk (361), and a plurality of support rods (364) arranged in a circumference are fixedly connected to the top of the sliding disk (361), the lengths of the support rods (364) are equidistantly increased, and a blocking disk (365) is fixedly connected to the top of the support rods (364), and the blocking disk (365) is slidably connected to the inner wall of the diversion pipe (351).

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