Multifunctional automatic welding workstation and control method thereof

Abstract

The invention relates to the technical field of welding work stations, in particular to a multifunctional automatic welding work station and a control method thereof.The multifunctional automatic welding work station comprises a rack, and the rack is provided with a throttle pipe composed of a cylindrical pipe, a square pipe opening and a round pipe opening; the device comprises a movable square plate, a movable circular plate, a square mounting plate, a circular mounting plate, a scraping strip and a water outlet spray head, and the scraping strip and the water outlet spray head are arranged on the movable square plate, the movable circular plate, the square mounting plate and the circular mounting plate at the same time. The push switch with the mechanical button is arranged to start the flushing function and the rubbing cleaning function, the mechanical button does not depend on software or a complex circuit, manual operation can still be achieved when a PLC breaks down, flushing and rubbing cleaning are guaranteed to be completed, flushing and cleaning interruption is avoided, meanwhile, the mechanical button is low in price, and the cost is low. And the installation and maintenance cost of the mechanical button is far lower than the debugging or module replacement cost of a PLC system.

Description

Technical Field

[0001] The present invention relates to the technical field of welding workstations, and particularly to a multi-functional automatic welding workstation and a control method thereof. Background Art

[0002] Welding, also known as fusion welding, is a manufacturing process that joins metals or other thermoplastic materials by heating, high temperature or high pressure; there are many energy sources for modern welding, including gas flames, electric arcs, lasers, electron beams, friction, and ultrasonic waves, etc.

[0003] In the existing chemical fluid transportation system for actively regulating the medium pressure, a process scheme of adding a variable-diameter throttle pipe section between two main pipelines is usually adopted. When the system involves the connection of pipelines with special-shaped cross-sections (such as a special working condition where the upstream is a square pipe and the downstream is a circular pipe), the existing automatic welding equipment performs automatic welding on a three-section composite pipeline system composed of a square pipe, a circular pipe, and a variable-diameter throttle pipe through a PLC system. And before the chemical pipeline is used, it is necessary to flush and clean the inner and outer sides of the chemical pipeline to avoid contamination of catalysts and chemical solutions by sundries such as mud and sand. However, the residual water body after flushing cannot be removed in time, which makes the chemical pipeline prone to local corrosion. And if the components for flushing and removing the water body are controlled by the above-mentioned PLC system, it will cause the PLC system to be too bloated, which increases the debugging and maintenance costs of the PLC system. And when there is a local failure in the PLC system, the components for flushing and removing the water body will also fail and cannot be used, thus causing the interruption of the flushing and cleaning of the chemical pipeline. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that when the components for flushing and removing the water body are controlled by a PLC system in the prior art, it will increase the debugging and maintenance costs of the PLC system, and to propose a multi-functional automatic welding workstation and a control method thereof.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A multi-functional automatic welding workstation, including a frame, a square pipe, a circular pipe, a first laser welder, and a second laser welder. The following are provided on the frame: A throttle pipe, which is composed of a cylindrical pipe, a square pipe orifice, and a circular pipe orifice; A moving square plate, a moving circular plate, a square mounting plate, a circular mounting plate, a scraping bar, and a water outlet nozzle. The scraping bar and the water outlet nozzle are simultaneously provided at the moving square plate, the moving circular plate, the square mounting plate, and the circular mounting plate; A clamping driving mechanism, which is used for clamping and driving the throttle pipe, the square pipe orifice, the circular pipe orifice, the square pipe, and the circular pipe to rotate; Multiple cleaning mechanism, which is used for cleaning both the inner and outer sides of square tubes and circular tubes multiple times; Adjusting mechanism, which is used to make the first laser welder and the second laser welder contact with the square tube and the circular tube in sequence.

[0006] Preferably, the clamping and driving mechanism includes: Horizontal sliding rails, pushing cylinders and vertical mounting plates. The two horizontal sliding rails are symmetrically and fixedly mounted at the left and right ends of the frame. The two pushing cylinders are respectively fixedly mounted in the two horizontal sliding rails. The two vertical mounting plates are respectively slidably sleeved in the two horizontal sliding rails, and one vertical mounting plate is fixedly connected to the output end of one pushing cylinder; Square limiting plate, circular limiting plate and equipment installation chamber. One square limiting plate and one circular limiting plate are respectively rotatably mounted on the two vertical mounting plates. The square limiting plate is a square plate structure, and the circular limiting plate is a circular plate structure. The equipment installation chamber is fixedly mounted at the middle end of the frame.

[0007] Preferably, the clamping and driving mechanism further includes: First fixing plate, first equipment plate and rotating gear. The first fixing plate is arranged on the frame at the position of the square limiting plate. The first equipment plate is arranged on the first fixing plate. One rotating gear is rotatably mounted in the equipment installation chamber; Driving motors and driving gears. The two driving motors are symmetrically and fixedly mounted in the equipment installation chamber. One driving gear is key-connected to the output end of one driving motor. One rotating gear is meshed with the two driving gears.

[0008] Preferably, the clamping and driving mechanism further includes: Placement holes, clamping telescopic rods, second fixing plates, second equipment plates, fixed cylinders and limiting spheres. The placement holes are penetrated through the middle ends of the equipment installation chamber and the rotating gear. The three clamping telescopic rods are circumferentially and equally spacedly mounted on one rotating gear at the position of the placement hole. The second fixing plate is arranged on the frame at the position of the circular limiting plate. The second equipment plate is arranged on the second fixing plate. The fixed cylinders are arranged inside the first equipment plate, the second equipment plate, the square tube and the circular tube. The limiting spheres are mounted on the fixed cylinders.

[0009] Preferably, the multiple cleaning mechanism includes: First mounting frame, second mounting frame and pressing switches. The first mounting frame and the second mounting frame are respectively arranged inside the first equipment plate and the second equipment plate. The moving square plate and the moving circular plate are respectively rotatably mounted on the first mounting frame and the second mounting frame. The pressing switches are all arranged at the moving square plate, the moving circular plate, the square mounting plate and the circular mounting plate; An outer resistance heater, an inner resistance heater and a temperature sensor. The two outer resistance heaters are respectively fixedly installed at the middle ends inside the first equipment board and the second equipment board. The two inner resistance heaters are respectively arranged at the square mounting plate and the circular mounting plate. The two temperature sensors are respectively fixedly installed at the first fixing plate and the second fixing plate.

[0010] Preferably, the moving square plate, the moving circular plate, the square mounting plate and the circular mounting plate are all provided with built-in water pumps communicated with the water spray nozzles.

[0011] Preferably, the adjusting mechanism includes: An upper mounting chamber, a connecting mounting frame and a vertical cylinder. The upper mounting chamber is fixedly installed at the upper end of the frame. The two connecting mounting frames are symmetrically and slidably installed inside the upper mounting chamber. The two vertical cylinders are symmetrically and fixedly installed inside the upper mounting chamber, and the output end of one vertical cylinder is fixedly connected to one connecting mounting frame.

[0012] Preferably, the adjusting mechanism further includes: A fixed slide rail and a pushing telescopic rod. The fixed slide rail is fixedly connected to the lower end of one of the connecting mounting frames. The pushing telescopic rod is fixedly installed in the fixed slide rail. The first laser welder is slidably sleeved in the fixed slide rail and is fixedly connected to the pushing telescopic rod. The second laser welder is fixedly connected to the lower end of the other connecting mounting frame.

[0013] A control method for a multifunctional automatic welding workstation, comprising the following steps: Step S1: First, pass the throttle pipe, the square pipe orifice and the circular pipe orifice through the placing hole, and sequentially start the three clamping telescopic rods to clamp the throttle pipe. Then, sleeved one end of the square pipe between the two groups of fixed cylinders, and sleeved one end of the circular pipe between the two groups of fixed cylinders to perform multiple cleaning on the inner and outer sides of the square pipe, the circular pipe and the throttle pipe. After that, while removing the residual water body by scraping, heat and evaporate the residual water body to facilitate timely removal of the residual water body, and start the two pushing cylinders so that the other ends of the square pipe and the circular pipe are respectively sleeved in the square pipe orifice and the circular pipe orifice to complete the connection of the square pipe, the circular pipe and the throttle pipe; Step S2: Then start the drive motor to make the three clamping telescopic rods drive the square pipe and the circular pipe to rotate, and start the two vertical cylinders to make the two connecting mounting frames move up and down alternately, so that the first laser welder and the second laser welder are sequentially in contact with the square pipe and the circular pipe; Step S3: When the first laser welder contacts the square tube, the second laser welder moves away from the circular tube, and the first laser welder is pushed by the telescopic rod to weld the contact point between the square tube and the square tube orifice. When the second laser welder contacts the circular tube, the first laser welder moves away from the square tube, and the square tube and the circular tube are driven to rotate so that the second laser welder welds the contact section between the circular tube and the circular tube orifice until the welding of the square tube, the circular tube and the throttle tube is completed.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention starts the flushing function and the scraping and cleaning function by setting a push button switch as a mechanical button. Since the mechanical button does not rely on software or complex circuits, it can still be manually operated when the PLC fails, ensuring the completion of flushing and scraping and cleaning, avoiding the interruption of flushing and cleaning. At the same time, the mechanical button is inexpensive, making the installation and maintenance costs of the mechanical button much lower than the costs of PLC system debugging or module replacement.

[0015] 2. The present invention sets four push button switches at the moving square plate and the moving circular plate, enabling the operator to drive and press the required push button switch according to the cleaning operation requirements, thereby starting the required cleaning operation process, improving the instant response and operation simplicity of the cleaning operation process. At the same time, since the cleaning operation process is independent, it allows the cleaning operation process to be independently optimized, avoiding affecting the normal use of the welding PLC system when optimizing the cleaning operation process.

[0016] 3. The present invention splits the flushing and cleaning outside the square tube, the circular tube and the throttle tube into four cleaning operation processes through the four push button switches at the moving square plate and the moving circular plate, namely the flushing and scraping and cleaning outside the square tube and the circular tube, as well as the flushing and cleaning outside the throttle tube and the heating and drying outside the square tube, the circular tube and the throttle tube, so that the operator can judge whether to start the next cleaning operation process according to the cleaning completion degree, thereby improving the independence of the cleaning operation process. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a multifunctional automatic welding workstation proposed by the present invention; Figure 2 is a front sectional schematic diagram of a multifunctional automatic welding workstation proposed by the present invention; Figure 3 In the present invention Figure 2 is an enlarged schematic diagram of part A; Figure 4 In the present invention Figure 2 is an enlarged schematic diagram of part B; Figure 5Left sectional view of a multi-functional automatic welding workstation proposed by the present invention; Figure 6 Schematic diagram of the structure of multiple moving square plates of a multi-functional automatic welding workstation proposed by the present invention; Figure 7 Schematic diagram of the structure of a moving square plate of a multi-functional automatic welding workstation proposed by the present invention; Figure 8 In the present invention Figure 7 Enlarged schematic diagram of part C; Figure 9 Schematic diagram of the structure of multiple moving circular plates of a multi-functional automatic welding workstation proposed by the present invention; Figure 10 Schematic diagram of the structure of a moving circular plate of a multi-functional automatic welding workstation proposed by the present invention; Figure 11 Schematic diagram of the structure of a square mounting plate of a multi-functional automatic welding workstation proposed by the present invention; Figure 12 Schematic diagram of the structure of a circular mounting plate of a multi-functional automatic welding workstation proposed by the present invention; Figure 13 Schematic diagram of the structure of a fixed cylinder of a multi-functional automatic welding workstation proposed by the present invention; Figure 14 Schematic diagram of the structure of a throttle pipe of a multi-functional automatic welding workstation proposed by the present invention.

[0018] In the figure: 1, frame; 2, throttle pipe; 3, scraping bar; 4, push switch; 5, first connecting telescopic rod; 6, second connecting telescopic rod; 7, first laser welder; 8, second laser welder; 9, horizontal slide rail; 10, first fixing plate; 11, pushing cylinder; 12, vertical mounting plate; 13, square limiting plate; 14, circular limiting plate; 15, equipment installation room; 16, first equipment plate; 17, outer resistance heater; 18, driving gear; 19, driving motor; 20, rotating gear; 21, placing hole; 22, clamping telescopic rod; 23, dirt collection box; 24, second fixing plate; 25, second equipment plate; 26, temperature sensor; 27, vertical cylinder; 28, connecting mounting frame; 29, first mounting frame; 30, moving square plate; 31, fixed slide rail; 32, second mounting frame; 33, pushing telescopic rod; 34, upper end installation room; 35, moving circular plate; 36, fixed cylinder; 37, limiting sphere; 38, first telescopic water pipe; 39, first mounting cylinder; 40, square mounting plate; 41, circular mounting plate; 42, inner resistance heater; 43, mounting truss; 44, water outlet nozzle; 45, second mounting cylinder; 46, second telescopic water pipe. Detailed implementation mode

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1

[0020] Referring to Figures 1 - 14 , a multifunctional automatic welding workstation includes a frame 1. A throttle pipe 2 is arranged on the frame 1. As shown in the attached Figure 14 figure, the throttle pipe 2 is composed of a cylindrical pipe, a square pipe orifice and a round pipe orifice. The cylindrical pipe is of a cylindrical structure, the square pipe orifice is of a frustum shell structure, and the round pipe orifice is of a frustum shell structure. Since the outer surfaces of the square pipe orifice and the round pipe orifice are both inclined surfaces and are not easy to be clamped, the throttle pipe 2 is connected to the square pipe orifice and the round pipe orifice so as to facilitate subsequent clamping of the square pipe orifice and the round pipe orifice through the throttle pipe 2; A square pipe, a round pipe, a first laser welder 7 and a second laser welder 8 are further arranged on the frame 1. The square pipe and the round pipe are respectively slidably sleeved in the square pipe orifice and the round pipe orifice so that the square pipe, the round pipe and the throttle pipe 2 are connected. When the conveyed liquid flows to the throttle pipe 2, since the diameter of the throttle pipe 2 is much smaller than the size of the square pipe and the diameter of the round pipe, a large internal turbulence and energy consumption are generated in the throttle pipe 2 for the conveyed liquid, so as to actively reduce the pressure of the conveyed liquid. The contact position between the square pipe and the square pipe orifice is four linear contact positions, and the first laser welder 7 is used to weld the contact position between the square pipe and the square pipe orifice. The contact position between the round pipe and the round pipe orifice is an arc contact position, and the second laser welder 8 is used to weld the contact position between the round pipe and the round pipe orifice. Since the first laser welder 7 and the second laser welder 8 are both mature technical means in the field to which this application belongs, no further description will be given; A moving square plate 30, a moving round plate 35, a square mounting plate 40, a round mounting plate 41, a scraping strip 3 and a water spray head 44 are provided. The scraping strip 3 and the water spray head 44 are simultaneously arranged at the moving square plate 30, the moving round plate 35, the square mounting plate 40 and the round mounting plate 41, and the inner and outer ends of the square pipe and the round pipe are scraped and cleaned through the scraping strip 3, and the inner and outer ends of the square pipe, the round pipe and the throttle pipe 2 are flushed and cleaned through the water spray head 44; Preferably, a clamping driving mechanism is further arranged on the frame 1. The clamping driving mechanism is arranged on the frame 1 and is used to clamp the throttle pipe 2, and drive the square pipe orifice, the round pipe orifice, the square pipe and the round pipe to rotate through the clamped throttle pipe 2 so as to facilitate subsequent welding operations; Preferably, the multiple cleaning mechanism is used to clean the inner and outer sides of the square pipe and the round pipe multiple times and timely remove the residual water body in the pipeline to reduce the risk of local corrosion of the pipeline; Preferably, an adjusting mechanism is further provided on the frame 1. The adjusting mechanism is arranged on the frame 1 and is used to make the first laser welder 7 and the second laser welder 8 contact the square tube and the round tube in sequence, so as to facilitate the first laser welder 7 and the second laser welder 8 to perform welding operations in sequence.

[0021] The clamping and driving mechanism includes a transverse slide rail 9, a pushing cylinder 11 and a vertical mounting plate 12. As shown in the appendix Figure 1 Two transverse slide rails 9 are symmetrically and fixedly installed at the left and right ends of the frame 1. Two pushing cylinders 11 are respectively fixedly installed in the two transverse slide rails 9. Two vertical mounting plates 12 are respectively slidably sleeved in the two transverse slide rails 9. One vertical mounting plate 12 is fixedly connected to the output end of one pushing cylinder 11, and the pushing cylinder 11 is used to make the vertical mounting plate 12 move linearly in the transverse slide rail 9.

[0022] Preferably, the clamping and driving mechanism further includes a square limiting plate 13, a circular limiting plate 14 and an equipment installation chamber 15. A square limiting plate 13 and a circular limiting plate 14 are respectively rotatably installed on the two vertical mounting plates 12. The square limiting plate 13 is a square plate structure, and a square hole is provided at the middle end of the square limiting plate 13. The circular limiting plate 14 is a circular plate structure, and a circular hole is provided at the middle end of the circular limiting plate 14. One vertical mounting plate 12 is connected to the square mounting plate 40 through a second mounting cylinder 45 and a second telescopic water pipe 46. The second mounting cylinder 45 and the second telescopic water pipe 46 extend to the inside of the square tube through the square hole to make the square mounting plate 40 move and clean inside the square tube. And the other vertical mounting plate 12 is connected to the circular mounting plate 41 through a second mounting cylinder 45 and a second telescopic water pipe 46. The second mounting cylinder 45 and the second telescopic water pipe 46 extend to the inside of the circular tube through the circular hole to make the circular mounting plate 41 move and clean inside the circular tube. Under the push of the square limiting plate 13 and the circular limiting plate 14, the square tube and the circular tube are connected to the throttle tube 2, and the two vertical mounting plates 12 are driven to move towards the middle end of the frame 1. The equipment installation chamber 15 is fixedly installed at the middle end of the frame 1.

[0023] The clamping and driving mechanism further includes a first fixing plate 10, a first equipment plate 16, a rotating gear 20, a driving motor 19 and a driving gear 18. As shown in the appendix Figure 1As shown, the first fixed plate 10 is connected to one of the vertical mounting plates 12 through the first connecting telescopic rod 5, the first equipment plate 16 is arranged on the first fixed plate 10, a rotating gear 20 is rotatably installed in the equipment installation room 15, two driving motors 19 are symmetrically fixedly installed in the equipment installation room 15, one of the driving gears 18 is keyed to an output end of a driving motor 19, a rotating gear 20 is located between the two driving gears 18, and a rotating gear 20 is meshed and connected with the two driving gears 18, as shown in the attached Figure 5 As shown, by starting the two driving motors 19, the two driving gears 18 are both rotated counterclockwise, so that the rotating gear 20 is accelerated to rotate clockwise.

[0024] Preferably, the clamping drive mechanism further includes a placement hole 21, a clamping telescopic rod 22, a second fixing plate 24, a second device plate 25, a fixing cylinder 36 and a limiting ball 37, as shown in the attached Figure 2 and attached Figure 5 As shown, the placement hole 21 is opened through the middle end of the equipment installation room 15 and the middle end of the rotating gear 20, and the diameter of the placement hole 21 is much larger than the size of the throttling tube 2, the square tube mouth, the round tube mouth, the square tube and the round tube, so as to facilitate the placement and removal of the throttling tube 2, the square tube mouth and the round tube mouth, and three clamping telescopic rods 22 are equidistantly installed on a rotating gear 20 at the placement hole 21, and the clamping telescopic rods 22 are electric telescopic rods, and the three clamping telescopic rods 22 are driven to approach the throttling tube 2 to clamp the throttling tube 2, the second fixing plate 24 is connected to another vertical mounting plate 12 through the first connecting telescopic rod 5, the second equipment plate 25 is arranged on the second fixing plate 24, and the fixing cylinder 36 is arranged on the inner side of the first equipment plate 16, the inner side of the second equipment plate 25, the inner side of the square tube and the inner side of the round tube, and as shown in the attached Figure 13 As shown, the limiting ball 37 is installed at the fixed cylinder 36 through a spring, and one end of the square tube is sleeved between the two groups of fixed cylinders 36, and one end of the round tube is sleeved between the two groups of fixed cylinders 36, so that the limiting ball 37 is against the inner and outer sides of the square tube and the round tube, and the square tube and the round tube are limited and supported. At the same time, because the trajectory of the square tube during rotation is an arc, the elastic force of the spring is used to make the limiting ball 37 always fit the outer wall of the square tube; It is particularly noted that when the rotating gear 20 drives the throttle tube 2 to rotate, the square limit plate 13 and the circular limit plate 14 limit the square tube, the circular tube and the throttle tube 2 against each other, and the square limit plate 13, the circular limit plate 14 are rotatably connected with the two vertical mounting plates 12 to allow the square tube and the circular tube to rotate smoothly; and the square limit plate 13 and the circular limit plate 14 are rotatably connected with the two vertical mounting plates 12 through the cylindrical member; Preferably, the multiple cleaning mechanism includes a first mounting frame 29, a second mounting frame 32 and a push switch 4. The first mounting frame 29 and the second mounting frame 32 are arranged on the inner side of the first device plate 16 and the second device plate 25 through a first mounting cylinder 39. The movable square plate 30 and the movable circular plate 35 are rotatably mounted on the first mounting frame 29 and the second mounting frame 32 respectively. At the same time, the first mounting frame 29 and the second mounting frame 32 are built with micro motors connected to the movable square plate 30 and the movable circular plate 35. Since the micro motor is a mature technical means in the field to which the present application belongs, it will not be described in detail. First, the first mounting frame 29 and the second mounting frame 32 are allowed to move vertically in a straight line, leaving room for the movable square plate 30 and the movable circular plate 35. The plate 30 and the movable circular plate 35 rotate in the space, and then the movable square plate 30 and the movable circular plate 35 are rotated by the micro motor, and the movable square plate 30 and the movable circular plate 35 are connected with the first equipment plate 16 and the second equipment plate 25 through two first telescopic water pipes 38, and the push switches 4 are arranged at the movable square plate 30, the movable circular plate 35, the square mounting plate 40 and the circular mounting plate 41, and the square mounting plate 40 is connected with the inner resistance heater 42 and the mounting truss 43 in sequence, and the circular mounting plate 41 is connected with the inner resistance heater 42 and the mounting truss 43 in sequence, and the water outlet nozzles 44 of the square mounting plate 40 and the circular mounting plate 41 are arranged at the mounting truss 43; The two vertical mounting plates 12, the first fixed plate 10 and the second fixed plate 24 are all equipped with a water storage chamber, which is connected to the movable square plate 30, the movable circular plate 35, the square mounting plate 40 and the circular mounting plate 41 through the first telescopic water pipe 38 and the second telescopic water pipe 46 respectively, and the movable square plate 30, the movable circular plate 35, the square mounting plate 40 and the circular mounting plate 41 are all provided with a built-in water pump connected to the water outlet nozzle 44 and the pipeline; And as attached Figure 6 and attached Figure 9 As shown, attached Figure 6 The push switches 4 of the two movable square plates 30 on the left are connected to the Figure 9 The push switch 4 of the upper left movable circular plate 35 is electrically connected to the built-in water pumps of the movable square plate 30 and the movable circular plate 35 respectively. Figure 6 The push switches 4 and the attached Figure 9 When the push switches 4 of the upper left movable circular plate 35 respectively abut against the outer ends of the square tube and the circular tube, the push switches 4 of the remaining movable square plates 30 and the push switches 4 of the movable circular plates 35 do not abut against the outer ends of the square tube and the circular tube, and the built-in water pumps of the movable square plates 30 and the movable circular plates 35 are turned on, so that the movable square plates 30 and the movable circular plates 35 in the vertical state start the flushing function for the outer sides of the square tube and the circular tube; and the attached Figure 6 The push switches 4 of the two upper movable square plates 30 are connected to the Figure 9The pressure switches 4 of the upper right moving circular plate 35 are respectively electrically connected to the built-in water pumps of the moving square plate 30 and the moving circular plate 35. When the first installation cylinder 39 drives the attached Figure 6 the pressure switches 4 of the two upper moving square plates 30 and the attached Figure 9 When the pressure switches 4 of the upper right moving circular plate 35 are respectively abutted against the outer ends of the square pipe and the circular pipe, the built-in water pumps of the moving square plate 30 and the moving circular plate 35 are closed, and the moving square plate 30 and the moving circular plate 35 are rotated from the vertical state to 45°, so that the scraping strip 3 abuts against the outer ends of the square pipe and the circular pipe, thereby starting the scraping and cleaning function for the outer sides of the square pipe and the circular pipe; At the same time, the attached Figure 6 the pressure switches 4 of the two right moving square plates 30 and the attached Figure 9 The pressure switches 4 of the lower left moving circular plate 35 are respectively electrically connected to the built-in water pumps of the moving square plate 30 and the moving circular plate 35. When the first installation cylinder 39 drives the attached Figure 6 the pressure switches 4 of the two right moving square plates 30 and the attached Figure 9 When the pressure switches 4 of the lower left moving circular plate 35 are respectively abutted against the outer ends of the square pipe and the circular pipe, the remaining moving square plate 30 and the moving circular plate 35 are in a horizontal state, and the built-in water pumps of the moving square plate 30 and the moving circular plate 35 are turned on, so that the moving square plate 30 and the moving circular plate 35 in the horizontal state start the flushing function for the outer side of the throttle pipe 2; And the attached Figure 6 the pressure switches 4 of the two lower moving square plates 30 and the attached Figure 9 The pressure switches 4 of the lower right moving circular plate 35 are respectively electrically connected to the outer side resistance heaters 17 of the first equipment plate 16 and the outer side resistance heaters 17 of the second equipment plate 25. When the first installation cylinder 39 drives the attached Figure 6 the pressure switches 4 of the two lower moving square plates 30 and the attached Figure 9 When the pressure switches 4 of the lower right moving circular plate 35 are respectively abutted against the outer ends of the square pipe and the circular pipe, the pressure switches 4 of the remaining moving square plate 30 and the pressure switches 4 of the moving circular plate 35 are not abutted against the outer ends of the square pipe and the circular pipe, so as to start the outer side resistance heaters 17 of the first equipment plate 16 and the outer side resistance heaters 17 of the second equipment plate 25, and heat and dry the outer ends of the square pipe and the circular pipe; For the throttle pipe 2 after flushing and cleaning, the first fixed plate 10, the second fixed plate 24, the square mounting plate 40 and the circular mounting plate 41 are respectively driven by the first connecting telescopic rod 5 and the second installation cylinder 45, so that the outer side resistance heater 17 and the inner side resistance heater 42 are located at the throttle pipe 2, and the inner and outer sides of the throttle pipe 2 are heated and dried; Moreover, the vertical mounting plate 12 is equipped with a sewage collection frame 23 through the second connecting telescopic rod 6. By driving the sewage collection frame 23 to move below the square pipe, circular pipe, and throttle pipe 2, the sundries removed by scraping and the dripping water are collected. When the circular pipe is rotating, the moving circular plate 35 can be in an inclined state, and the scraping bar 3 continues to scrape and clean the outer side of the circular pipe. When the square mounting plate 40 and the circular mounting plate 41 are located inside the square pipe and the circular pipe, the scraping bar 3 and the pressing switch 4 are simultaneously in contact with the inner sides of the square pipe and the circular pipe, and the water spray nozzles 44 of the square mounting plate 40 and the circular mounting plate 41 wash and clean the inner sides of the square pipe, circular pipe, and throttle pipe 2. Preferably, there are an outer side resistance heater 17, an inner side resistance heater 42, and temperature sensors 26. The two outer side resistance heaters 17 are fixedly installed at the middle inner ends of the first equipment plate 16 and the second equipment plate 25. The two inner side resistance heaters 42 are respectively arranged at the square mounting plate 40 and the circular mounting plate 41. The two temperature sensors 26 are respectively fixedly installed at the first fixing plate 10 and the second fixing plate 24. One temperature sensor 26 is electrically connected to one outer side resistance heater 17 and one inner side resistance heater 42, and the other temperature sensor 26 is electrically connected to one outer side resistance heater 17 and one inner side resistance heater 42.

[0025] After the inner and outer sides of the square pipe and the circular pipe are cleaned, while scraping off the residual water by the scraping bar 3, the outer side resistance heater 17 and the inner side resistance heater 42 are used to heat and evaporate the residual water, so as to promptly remove the residual water and reduce the risk of local corrosion of the pipeline. Moreover, an external switch is provided for the built-in water pump at the square mounting plate 40 and the circular mounting plate 41. When the external switch is pressed, the built-in water pump is turned off, and at the same time, the pressing switch 4 is ineffective, and the flushing function is turned off, so that after the flushing and scraping cleaning are completed, the square mounting plate 40 and the circular mounting plate 41 can be heated and dried by the inner side resistance heater 42. Moreover, the outer side resistance heater 17 and the inner side resistance heater 42 can preheat the inner and outer ends of the square pipe and the circular pipe. Since the throttle pipe 2, square pipe orifice, circular pipe orifice, square pipe, and circular pipe are all made of aluminum alloy with good thermal conductivity, the inner and outer ends of the square pipe and the circular pipe have uniform temperatures, avoiding cracks generated during welding due to large surface temperature differences of the square pipe and the circular pipe. The temperature sensors 26 are used to detect the surface temperatures of the square pipe and the circular pipe. When the surface temperatures of the square pipe and the circular pipe are too high, the two temperature sensors 26 transmit a closing signal to the outer side resistance heater 17 and the inner side resistance heater 42, and then the outer side resistance heater 17 and the inner side resistance heater 42 are automatically turned off. After the square tube and the circular tube are in limit support, the movable square plate 30 and the movable circular plate 35 can be located at the middle ends of the square tube and the circular tube, and the square mounting plate 40 and the circular mounting plate 41 can be moved for cleaning; or the square mounting plate 40 and the circular mounting plate 41 can be located at the middle ends of the square tube and the circular tube, and the movable square plate 30 and the movable circular plate 35 can be moved for cleaning; after the square tube and the circular tube are cleaned, the square tube and the circular tube are pushed to be connected with the throttle tube 2 through the square limit plate 13 and the circular limit plate 14. At this time, the movable square plate 30 and the square mounting plate 40 are dynamically moved to the left and right ends of the square tube, and the movable circular plate 35 and the circular mounting plate 41 are dynamically moved to the left and right ends of the circular tube to limit and support the square tube and the circular tube during the pushing process; The adjusting mechanism includes an upper mounting chamber 34, a connecting mounting frame 28 and a vertical cylinder 27. The upper mounting chamber 34 is fixedly mounted at the upper end of the frame 1. Two connecting mounting frames 28 are symmetrically and slidably mounted in the upper mounting chamber 34. Two vertical cylinders 27 are symmetrically and fixedly mounted in the upper mounting chamber 34, and the output end of one vertical cylinder 27 is fixedly connected to one connecting mounting frame 28.

[0026] Preferably, the adjusting mechanism further includes a fixed slide rail 31 and a pushing telescopic rod 33. As shown in the appendix Figure 2 The fixed slide rail 31 is fixedly connected to the lower end of one of the connecting mounting frames 28. The pushing telescopic rod 33 is fixedly mounted in the fixed slide rail 31. The first laser welder 7 is slidably sleeved in the fixed slide rail 31, and the first laser welder 7 is fixedly connected to the pushing telescopic rod 33. The pushing telescopic rod 33 is an electric telescopic rod, and the first laser welder 7 is linearly moved in the fixed slide rail 31 through the pushing telescopic rod 33. The second laser welder 8 is fixedly connected to the lower end of the other connecting mounting frame 28, and the first laser welder 7 and the second laser welder 8 are moved up and down alternately through the two vertical cylinders 27.

[0027] Specifically, when the first laser welder 7 first contacts the square tube, the second laser welder 8 is away from the circular tube, and the first laser welder 7 is moved through the pushing telescopic rod 33 to complete the welding of the first linear contact position between the square tube and the square tube orifice; Since the trajectory of the square tube during rotation is an arc, when the square tube and the circular tube are rotated clockwise by 90°, the first laser welder 7 needs to be driven away from the square tube first, and the second laser welder 8 contacts the circular tube to align the second linear contact position between the square tube and the square tube orifice with the first laser welder 7, and at the same time, the second laser welder 8 completes a quarter of the arc contact position between the circular tube and the circular tube orifice; Then, bring the first laser welder 7 into contact with the square tube, while keeping the second laser welder 8 away from the circular tube, and repeat the above operations to successively complete the welding of the third and fourth linear contact positions of the square tube and the square tube orifice, and complete the welding of the remaining three-quarters of the circular tube and the circular arc contact position of the circular tube orifice. All the above welding operation processes are controlled by the welding PLC system.

[0028] When welding the square tube, circular tube and throttle tube 2, the movable square plate 30 and the movable circular plate 35 can be rotated to the horizontal state to move away from the outer sides of the square tube and the circular tube. The square mounting plate 40 and the circular mounting plate 41 are respectively moved into the cylindrical parts of the square limiting plate 13 and the circular limiting plate 14 to move away from the inner sides of the square tube and the circular tube, so as to avoid interfering with the rotational movement during the welding of the square tube and the circular tube. At the same time, the square tube and the circular tube are limited and supported by the limiting spheres 37. And when the welding of the square tube, circular tube and throttle tube 2 is completed, the movable square plate 30 and the movable circular plate 35 are rotated to the horizontal state to facilitate the final extraction of the square tube, circular tube and throttle tube 2. A control method for a multifunctional automatic welding workstation includes the following steps: Step S1: First, pass the throttle tube 2, the square tube orifice and the circular tube orifice through the placement hole 21, and successively start the three clamping telescopic rods 22 to clamp the throttle tube 2. Then, put one end of the square tube sleeved between the two fixed cylinders 36, and one end of the circular tube sleeved between the two fixed cylinders 36 to perform multiple cleaning on the inner and outer sides of the square tube, circular tube and throttle tube 2. Then, while removing the residual water body by scraping, heat and evaporate the residual water body to facilitate the timely removal of the residual water body, and start the two pushing cylinders 11 to make the other ends of the square tube and the circular tube respectively sleeved in the square tube orifice and the circular tube orifice to complete the connection of the square tube, circular tube and throttle tube 2. Step S2: Then start the driving motor 19 to drive the three clamping telescopic rods 22 to drive the square tube and the circular tube to rotate, and start the two vertical cylinders 27 to make the two connecting mounting frames 28 move up and down alternately, so that the first laser welder 7 and the second laser welder 8 are successively brought into contact with the square tube and the circular tube. When the first laser welder 7 is in contact with the square tube, the second laser welder 8 is away from the circular tube, and the first laser welder 7 is used to weld the contact part between the square tube and the square tube orifice through the pushing telescopic rod 33. When the second laser welder 8 is in contact with the circular tube, the first laser welder 7 is away from the square tube, and the square tube and the circular tube are driven to rotate to make the second laser welder 8 weld a section of the contact between the circular tube and the circular tube orifice until the welding of the square tube, circular tube and throttle tube 2 is completed. Embodiment 2

[0029] When connecting two circular tubes and a throttle tube 2, round tube openings are provided at both ends of the throttle tube 2. The frame 1 is provided with two circular limiting plates 14 and two second equipment plates 25, and the first laser welder 7 and the second laser welder 8 are respectively used to weld the contact parts between the two circular tubes and the round tube openings. Embodiment 3

[0030] When connecting two square tubes and a throttle tube 2, square tube openings are provided at both ends of the throttle tube 2. The frame 1 is provided with two square limiting plates 13 and two first equipment plates 16. At the same time, a fixed slide rail 31 and a pushing telescopic rod 33 are arranged at the upper end of the first laser welder 7, and the first laser welder 7 is used to weld the contact parts between the two square tubes and the square tube openings.

[0031] The functional principle of the present invention can be elaborated through the following operation methods: First, pass the throttle tube 2, the square tube opening and the round tube opening through the placement hole 21, so that the throttle tube 2 is located at the placement hole 21 of the rotating gear 20, and then start the three clamping telescopic rods 22 in sequence to clamp the throttle tube 2. The square tube opening and the round tube opening are located outside the equipment installation chamber 15. Then, sleeved one end of the square tube between two groups of fixed cylinders 36, and sleeved one end of the circular tube between two groups of fixed cylinders 36. After that, drive the moving square plate 30 and the moving circular plate 35 to move through the first installation cylinder 39, and switch to start the scraping and cleaning function and the flushing function of the moving square plate 30 and the moving circular plate 35, and perform multiple cleaning on the outer sides of the square tube, the circular tube and the throttle tube 2. And let the square installation plate 40 and the circular installation plate 41 move through the second installation cylinder 45, and start the scraping and cleaning function and the flushing function, so as to perform multiple cleaning on the inner sides of the square tube, the circular tube and the throttle tube 2. After that, while scraping to remove the residual water body, while heating to evaporate the residual water body, so as to timely remove the residual water body. And drive the sewage collecting frame 23 to move below the square tube, the circular tube and the throttle tube 2 through the second connecting telescopic rod 6 to collect the sundries and dripping water bodies removed by scraping. And start the two pushing cylinders 11 to move the square limiting plate 13 and the circular limiting plate 14 towards the equipment installation chamber 15, so that the other ends of the square tube and the circular tube are respectively sleeved in the square tube opening and the round tube opening to complete the connection of the square tube, the circular tube and the throttle tube 2. After that, start the drive motor 19 to drive the drive gear 18 to rotate. Since the drive gear 18 is meshed with the rotating gear 20 for transmission, the rotating gear 20 drives the square tube and the circular tube to rotate through the three clamping telescopic rods 22, and start the two vertical cylinders 27 to drive the connecting mounting frame 28 to perform up and down alternating movements, and make the first laser welder 7 and the second laser welder 8 contact with the square tube and the circular tube in sequence. When the first laser welder 7 contacts the square tube, the second laser welder 8 is away from the circular tube, and the first laser welder 7 is pushed by the telescopic rod 33 to weld the contact part between the square tube and the square tube orifice. When the second laser welder 8 contacts the circular tube, the first laser welder 7 is away from the square tube, and the square tube and the circular tube are driven to rotate so that the second laser welder 8 welds the contact section between the circular tube and the circular tube orifice until the welding of the square tube, the circular tube and the throttle tube 2 is completed.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A multi-functional automatic welding workstation, comprising a frame (1), square tubes, round tubes, a first laser welder (7) and a second laser welder (8), characterized in that, The following are provided on the frame (1): A throttle tube (2), which is composed of a cylindrical tube, a square pipe orifice, and a circular pipe orifice; A movable square plate (30), a movable circular plate (35), a square mounting plate (40), a circular mounting plate (41), a scraping bar (3), and a water outlet nozzle (44), and the scraping bar (3) and the water outlet nozzle (44) are simultaneously arranged at the movable square plate (30), the movable circular plate (35), the square mounting plate (40), and the circular mounting plate (41); A clamping and driving mechanism, which is used for clamping and driving the throttle tube (2), the square pipe orifice, the circular pipe orifice, the square pipe, and the circular pipe to rotate; A multiple cleaning mechanism, which is used for multiple cleaning of the inner and outer sides of the square pipe and the circular pipe; An adjusting mechanism, which is used for making the first laser welder (7) and the second laser welder (8) contact the square pipe and the circular pipe in sequence.

2. The multifunctional automatic welding workstation according to claim 1, characterized in that, The clamping and driving mechanism includes: A transverse slide rail (9), a pushing cylinder (11), and a vertical mounting plate (12). The two transverse slide rails (9) are symmetrically and fixedly installed at the left and right ends of the frame (1). The two pushing cylinders (11) are respectively fixedly installed in the two transverse slide rails (9). The two vertical mounting plates (12) are respectively slidably sleeved in the two transverse slide rails (9), and one vertical mounting plate (12) is fixedly connected to the output end of one pushing cylinder (11); A square limiting plate (13), a circular limiting plate (14), and an equipment installation chamber (15). One square limiting plate (13) and one circular limiting plate (14) are respectively rotatably installed on the two vertical mounting plates (12). The square limiting plate (13) is a square plate structure, the circular limiting plate (14) is a circular plate structure, and the equipment installation chamber (15) is fixedly installed at the middle end of the frame (1).

3. A multifunctional automatic welding workstation according to claim 2, characterized in that The clamping and driving mechanism further includes: A first fixing plate (10), a first equipment plate (16), and a rotating gear (20). The first fixing plate (10) is arranged on the frame (1) at the position of the square limiting plate (13). The first equipment plate (16) is arranged on the first fixing plate (10). One rotating gear (20) is rotatably installed in the equipment installation chamber (15); A driving motor (19) and a driving gear (18). The two driving motors (19) are symmetrically and fixedly installed in the equipment installation chamber (15). One driving gear (18) is key-connected to the output end of one driving motor (19). One rotating gear (20) is meshed with the two driving gears (18).

4. The multifunctional automatic welding workstation according to claim 3, characterized in that, The clamping and driving mechanism further includes: The placement hole (21), the clamping telescopic rod (22), the second fixing plate (24), the second equipment plate (25), the fixed cylinder (36) and the limit sphere (37). The placement hole (21) is penetrated and opened at the middle end of the equipment installation chamber (15) and the middle end of the rotating gear (20). The three clamping telescopic rods (22) are circumferentially and equidistantly installed on a rotating gear (20) at the placement hole (21). The second fixing plate (24) is arranged on the frame (1) at the circular limit plate (14). The second equipment plate (25) is arranged on the second fixing plate (24). The fixed cylinder (36) is arranged inside the first equipment plate (16), inside the second equipment plate (25), inside the square pipe and inside the circular pipe. The limit sphere (37) is installed at the fixed cylinder (36).

5. A multifunctional automatic welding workstation according to claim 4, characterized in that, The multiple cleaning mechanism includes: The first mounting frame (29), the second mounting frame (32) and the push switch (4). The first mounting frame (29) and the second mounting frame (32) are respectively arranged inside the first equipment plate (16) and the second equipment plate (25). The moving square plate (30) and the moving circular plate (35) are respectively rotatably installed on the first mounting frame (29) and the second mounting frame (32). The push switches (4) are all arranged at the moving square plate (30), the moving circular plate (35), the square mounting plate (40) and the circular mounting plate (41). The outer resistance heater (17), the inner resistance heater (42) and the temperature sensor (26). The two outer resistance heaters (17) are respectively fixedly installed at the middle end inside the first equipment plate (16) and the middle end inside the second equipment plate (25). The two inner resistance heaters (42) are respectively arranged at the square mounting plate (40) and the circular mounting plate (41). The two temperature sensors (26) are respectively fixedly installed at the first fixing plate (10) and the second fixing plate (24).

6. A multifunctional automatic welding workstation according to claim 5, characterized in that, The moving square plate (30), the moving circular plate (35), the square mounting plate (40) and the circular mounting plate (41) are all provided with built-in water pumps communicated with the water outlet nozzle (44).

7. A multifunctional automatic welding workstation according to claim 6, characterized in that, The adjusting mechanism includes: The upper mounting chamber (34), the connecting mounting frame (28) and the vertical cylinder (27). The upper mounting chamber (34) is fixedly installed at the upper end of the frame (1). The two connecting mounting frames (28) are symmetrically and slidably installed inside the upper mounting chamber (34). The two vertical cylinders (27) are symmetrically and fixedly installed inside the upper mounting chamber (34), and the output end of one vertical cylinder (27) is fixedly connected to one connecting mounting frame (28).

8. A multifunctional automated welding workstation according to claim 7, wherein, The adjusting mechanism further includes: A fixed slide rail (31) and a pushing telescopic rod (33), the fixed slide rail (31) is fixedly connected to the lower end of one of the connecting mounting brackets (28), the pushing telescopic rod (33) is fixedly installed in the fixed slide rail (31), the first laser welder (7) is slidably sleeved in the fixed slide rail (31), and the first laser welder (7) is fixedly connected to the pushing telescopic rod (33), and the second laser welder (8) is fixedly connected to the lower end of the other connecting mounting bracket (28).

9. The control method of a multi-functional automatic welding workstation according to claim 8, characterized in that, The control method includes the following steps: Step S1: First, pass the throttle tube (2), the square pipe orifice and the round pipe orifice through the placement hole (21), and sequentially activate the three clamping telescopic rods (22) to clamp the throttle tube (2). Then, sleeved one end of the square pipe between the two groups of fixed cylinders (36), and sleeved one end of the round pipe between the two groups of fixed cylinders (36) to perform multiple cleaning on the inner and outer sides of the square pipe, round pipe and throttle tube (2). After that, scrape off the residual water while heating and evaporating the residual water to facilitate the timely removal of the residual water, and activate the two pushing cylinders (11) to sleeved the other ends of the square pipe and round pipe into the square pipe orifice and round pipe orifice respectively, so as to complete the connection of the square pipe, round pipe and throttle tube (2); Step S2: Then activate the drive motor (19) to drive the square pipe and round pipe to rotate by the three clamping telescopic rods (22), and activate the two vertical cylinders (27) to make the two connecting mounting brackets (28) move up and down alternately, so that the first laser welder (7) and the second laser welder (8) contact the square pipe and round pipe in turn; Step S3: When the first laser welder (7) contacts the square pipe, the second laser welder (8) is away from the round pipe, and the first laser welder (7) is used to weld the contact part between the square pipe and the square pipe orifice by the pushing telescopic rod (33). When the second laser welder (8) contacts the round pipe, the first laser welder (7) is away from the square pipe, and the square pipe and round pipe are driven to rotate, so that the second laser welder (8) welds the contact section between the round pipe and the round pipe orifice until the welding of the square pipe, round pipe and throttle tube (2) is completed.

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