A welding device for aluminum guardrail production

Abstract

The application discloses a welding device for aluminum guardrail production and belongs to the technical field of welding equipment, which comprises a base, an extension seat is fixedly connected to the right side face of the base, a welding arm is installed on the extension seat, a placing table is installed on the base through a first support column, a first feeding mechanism is arranged on the placing table, and two first bearing blocks are installed on the placing table; in the application, a closed-loop automatic production process is formed, labor intensity and safety risks are reduced, from automatic feeding, accurate positioning and automatic welding to automatic overturning and re-welding, the device constructs a highly coherent automatic operation process, an operator only needs to perform monitoring and a small amount of auxiliary work, the strength of repetitive physical labor is greatly reduced, personnel are kept away from dangerous areas such as welding arc light and metal splashing, the working environment is effectively improved, and the safety of the production process is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of welding equipment, and particularly relates to a welding device for aluminum guardrail production. BACKGROUND

[0002] Aluminum guardrails are widely used in municipal engineering, building decoration and traffic safety fields due to their light weight, corrosion resistance and strong aestheticity. The typical structure of the aluminum guardrail generally comprises two mounting columns on the sides and a protective frame arranged between the two mounting columns. In the installation process, the mounting columns are first fixed to the ground through fasteners such as anchor bolts, and then the prefabricated protective frame is connected with the mounting columns, so as to complete the overall installation. Among them, the protective frame as the core load-bearing and protective component is generally composed of horizontally arranged upper and lower main pipes and a plurality of branch pipes vertically welded between the two main pipes.

[0003] At present, in the production process of the protective frame of the aluminum guardrail, especially in the welding process of the main pipe and the branch pipe, there are still some technical bottlenecks. Some production enterprises still rely on manual or semi-automatic way to carry out feeding and positioning operation. Specifically, the operator needs to manually place the branch pipe one by one on the predetermined welding position of the main pipe, and then weld and fix it.

[0004] However, the traditional production method has the following defects which need to be solved:

[0005] Insufficient positioning accuracy: manual feeding is difficult to ensure the relative position (such as perpendicularity and spacing) between each branch pipe and the main pipe to be completely accurate, and cumulative error is easy to occur, which leads to poor size consistency and irregular shape of the welded protective frame, affecting product quality and installation interchangeability.

[0006] Low production efficiency: manual feeding, positioning and auxiliary fixing and a series of operations are time-consuming and laborious, which seriously restricts the welding rhythm and cannot meet the efficiency demand of large-scale and batch production, resulting in limited overall production capacity.

[0007] Safety and high labor intensity: the operator needs to carry out repeated carrying and positioning operations at close range for a long time, which not only has high labor intensity, but also has safety hazards such as arc light burn and metal splashing burn in the welding process, which threatens the occupational health.

[0008] Therefore, the application designs a welding device for aluminum guardrail production to solve the above problems. SUMMARY

[0009] The purpose of the application is to solve the problems in the background art and provide a welding device for aluminum guardrail production.

[0010] In order to achieve the above purpose, the application adopts the following technical scheme:

[0011] The utility model provides a welding device for aluminum guardrail production, including the base, the right side of base is fixedly connected with extension seat, install the welding arm on the extension seat, install the placement platform through first support on the base, first feeding mechanism is arranged on the placement platform, install two first bearing blocks on the placement platform, install the guide rail on the base, the moving frame is connected in the guide rail and slides, fourth electric hydraulic rod is installed on the base on the left side of moving frame, rotating shaft is rotatably connected in the moving frame, first motor is installed on the rotating shaft front one end and is arranged outside the moving frame, two second bearing blocks are fixedly connected outside the rotating shaft, two extension rods are fixedly connected on the side surface of rotating shaft, install two bearing rods on the extension rod, the clamping mechanism is equipped outside the rotating shaft, the gantry is installed on the base, the transverse movement subassembly is equipped on the gantry, install the longitudinal movement subassembly below the transverse movement subassembly, second feeding mechanism is installed on the bottom end of longitudinal movement subassembly, the semicircle groove is set up on the bearing rod.

[0012] As a further description of the above technical solutions:

[0013] The first feeding mechanism includes a placement frame and an extension receiving assembly, the second support is installed below the placement frame, the second support is fixedly connected on the placement platform, the main pipe for storing the guardrail is in the placement frame, the movable top rod is overlapped on the right side surface of the placement frame, the second electric hydraulic rod is fixedly connected below the movable top rod, the second electric hydraulic rod is installed on the placement platform, the movable top rod is overlapped with the baffle on the right side surface, the baffle is installed on the placement platform, the upper surfaces of the movable top rod and the baffle are provided with consistent inclination angles.

[0014] As a further description of the above technical solutions:

[0015] The extension receiving assembly includes a mounting ring fixedly connected outside the rotating shaft, the sliding frame is fixedly connected outside the mounting ring, the sliding rod is slidably connected in the sliding frame, the first electric hydraulic rod is fixedly connected to one end of the sliding rod in the sliding frame, the first electric hydraulic rod is installed on the inner wall of the sliding frame, the upper surface of the sliding rod is flush with the upper surface of the sliding frame.

[0016] As a further description of the above technical solutions:

[0017] The second feeding mechanism comprises a storage barrel, the storage barrel is installed at the bottom end of the longitudinal moving assembly, the storage barrel is used for storing the branch pipes of the guardrails, third electric hydraulic rods are installed on the left and right sides of the storage barrel, end portions of the third electric hydraulic rods are fixedly connected with vertical plates, the vertical plates are installed on the side close to the storage barrel, the vertical plates are installed on the side close to the storage barrel, the insertion rods are inserted into the lowermost branch pipes in the storage barrel, the insertion rods are used for limiting the lowermost branch pipes in the storage barrel, and the distance between the lower surface of the lowermost limit position of the storage barrel and the bearing rod rotated to the horizontal state is smaller than the diameter of the branch pipe and greater than the radius of the branch pipe.

[0018] As a further description of the above technical solution:

[0019] The clamping mechanism comprises a pressing plate, two intermediate rods are installed on the pressing plate, the intermediate rods are sleeved outside the rotating shaft, first gears are installed outside the intermediate rods, second gears are engaged below the first gears, second motors are installed outside the second gears, fixed plates are installed outside the second motors, and the fixed plates are fixedly connected outside the rotating shaft.

[0020] As a further description of the above technical solution:

[0021] The storage barrel is provided with a transition section, and the transition section is used for temporarily storing a single branch pipe.

[0022] As a further description of the above technical solution:

[0023] The inner wall of the second bearing block is provided with a rubber layer, and the rubber layer is used for buffering the impact of the main pipe falling into the second bearing block.

[0024] As a further description of the above technical solution:

[0025] The upper surfaces of the sliding frame and the sliding rod are provided with anti-skid layers, and the anti-skid layers are provided with transverse lines.

[0026] As a further description of the above technical solution:

[0027] The lower surface of the pressing plate is provided with a Teflon layer, which is used for reducing the friction between the pressing plate and the branch pipe.

[0028] As a further description of the above technical solution:

[0029] The pressing plate is provided with a groove, and the groove is used for pressing the branch pipe.

[0030] As a further description of the above technical solution, the beneficial effects of the present application are:

[0031] 1、The present application, by setting first feeding mechanism and second feeding mechanism, instead of the traditional manual handling and placement, fundamentally eliminates the positioning error caused by human factors, with the precise drive of the fourth electric hydraulic rod, can ensure that each branch pipe can be accurate, fast and main pipe adhesion positioning, to ensure the consistency and accuracy of the welding position, greatly improve the product's pass rate, and lay the foundation for subsequent batch, efficient production; integrated automatic turnover welding function, optimize the welding process, to ensure the welding quality, the present application innovatively integrated by clamping mechanism, rotating shaft and first electric machine into automatic turnover system, after completing the main pipe and branch pipe one side welding, the system can automatic clamping workpiece and realize 180 DEG turnover, make the other side of the welding surface automatic exposure to welding arm, this design not only realizes the double-sided continuous welding of workpiece, avoids the displacement, collision or deformation caused by manual turnover, more ensures the symmetry and quality stability of both sides of the weld, significantly improves the overall structural strength and aesthetic degree of guardrail; form a closed loop of automatic production process, reduce the labor intensity and safety risk, from automatic feeding, accurate positioning, automatic welding, to automatic turnover, welding again, the device constructs a highly coherent automatic operation process, the operator only needs to monitor and a small amount of auxiliary work, greatly reduces the strength of repetitive physical labor, at the same time, make personnel away from the welding arc light, metal splashing and other dangerous area, effectively improve the working environment, improve the safety of production process.

[0032] 2、The application, a kind of by longitudinal moving assembly, transverse moving assembly and storage barrel cooperates with the distribution of material loading mechanism, by accurately controlling the lifting and translation trajectory of storage barrel, and using the specific spacing relationship between it and the carrier bar, ensure that during the movement of storage barrel, only when the bottom of its discharge port and the semicircular groove on the carrier bar is accurately aligned, the lowest single branch pipe can fall into the semicircular groove under the action of gravity, this kind of "non-alignment blocking, alignment falling" mechanical interlocking logic, fundamentally solves the problems of multiple pipes falling at the same time, jamming, interference and other problems in traditional vibration feeding or simple pushing mode, ensures the smoothness and reliability of the feeding process, simplifies the feeding structure, improves the feeding efficiency and positioning accuracy, the feeding mechanism does not need complex sensors or pneumatic gripping elements, only through the two-dimensional movement of the storage barrel and the clever mechanical limiting design, can complete the whole process from storage to accurate placement, the storage barrel can continuously, intermittently send the branch pipe into each semicircular groove of the carrier bar under the drive of the transverse moving assembly, realizes batch, beat fast feeding, since the branch pipe falls directly into the preset positioning semicircular groove, its position accuracy is guaranteed by the machining accuracy, without secondary adjustment, provides a solid foundation for subsequent high quality welding, improves the automation degree and stability of the system, reduces the maintenance cost, the whole feeding process is fully automated, reduces manual intervention, the pure mechanical distribution logic has higher stability and lower failure rate compared with complex electric control system, at the same time, also reduces the manufacturing cost and maintenance difficulty of the equipment, is more suitable for long-term stable operation in industrial production environment.

[0033] 3、In the application, the traditional rigid positioning or manual adjustment mode is abandoned, and a passive self-centering system based on gravity and mechanical structure is innovatively designed, specifically, through the virtual pressure fixation of the pressing plate and the inclination drive of the rotating shaft, the branch pipe naturally slides along the surface of the main pipe under the action of its own gravity, more importantly, by virtue of the arc surface design matched between the end of the branch pipe and the surface of the main pipe, an adaptive adjustment effect of "extrusion-rotation" is generated at the moment of contact, which can automatically eliminate the slight position deviation caused by feeding or manufacturing tolerance, drive the branch pipe to rotate to the perfect fitting state with the main pipe to realize the maximum contact area, and ensure the "zero error" of positioning, greatly simplify the positioning process, and significantly improve the automation degree and production efficiency, the above-mentioned adaptive correction process is completely completed automatically by mechanical structure and physical law, without the need for any sensor for real-time feedback, and without the need for any manual intervention or fine adjustment, which fundamentally solves the bottleneck problem of frequent shutdown and manual adjustment in traditional welding due to inaccurate positioning, so that the whole fitting positioning link can be seamlessly connected in the automatic assembly line, the auxiliary working hours of a single product are greatly shortened, thereby realizing the qualitative leap of production efficiency, and creating an ideal premise for high-quality welding, improving the structural strength and consistency of the product, and the precise and close fitting is the basis of high-quality welding, through the automatic correction mechanism of the application, the branch pipe and the main pipe have reached the ideal contact state before welding, and the welding defects caused by excessive gap or uneven stress are eliminated, which not only ensures the quality stability and consistency of each welding point, but also ensures the overall structural strength and durability of the final finished product guardrail, and significantly improves the product quality level. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 A three-dimensional structure schematic diagram of the welding device for aluminum guardrail production is provided for the application;

[0035] Figure 2 A three-dimensional structure schematic diagram of the placing frame of the welding device for aluminum guardrail production is provided for the application;

[0036] Figure 3 An extended receiving assembly expanded state schematic diagram of the welding device for aluminum guardrail production is provided for the application;

[0037] Figure 4 A main pipe and branch pipe fitting state schematic diagram of the welding device for aluminum guardrail production is provided for the application;

[0038] Figure 5 An extended receiving assembly three-dimensional cross-sectional structure schematic diagram of the welding device for aluminum guardrail production is provided for the application;

[0039] Figure 6 A three-dimensional structure schematic diagram of the welding device for aluminum guardrail production is provided for the application; Figure 5Amplification structure schematic diagram of middle A part;

[0040] Figure 7 A storage barrel three-dimensional section structure schematic diagram of a welding device for aluminum guardrail production is provided for the present application;

[0041] Figure 8 A storage barrel side view section structure schematic diagram of a welding device for aluminum guardrail production is provided for the present application;

[0042] Figure 9 A pressing plate three-dimensional structure schematic diagram of a welding device for aluminum guardrail production is provided for the present application;

[0043] Figure 10 A middle rod three-dimensional structure schematic diagram of a welding device for aluminum guardrail production is provided for the present application.

[0044] Legend:

[0045] 1, base; 2, extension seat; 3, welding arm; 4, first support column; 5, placement table; 6, first feeding mechanism; 61, placement frame; 62, extension receiving assembly; 621, mounting ring; 622, sliding frame; 623, first electric hydraulic rod; 624, sliding rod; 625, anti-skid layer; 63, movable top rod; 64, partition plate; 65, second electric hydraulic rod; 66, second support column; 7, gantry; 8, transverse movement assembly; 9, longitudinal movement assembly; 10, second feeding mechanism; 101, storage barrel; 102, third electric hydraulic rod; 103, vertical plate; 104, insertion rod; 11, first bearing block; 12, guide rail; 13, moving frame; 14, fourth electric hydraulic rod; 15, rotating shaft; 16, first motor; 17, second bearing block; 18, extension rod; 19, bearing rod; 20, clamping mechanism; 201, pressing plate; 202, middle rod; 203, first gear; 204, second gear; 205, second motor; 206, fixed plate; 21, transition section. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] Please refer to the drawings in the embodiments of the present application Figure 1 - the drawings in the embodiments of the present application Figure 10The application provides a technical scheme: a welding device for aluminum guardrail production, which comprises a base 1, an extension seat 2 fixedly connected to the right side of the base 1, a welding arm 3 installed on the extension seat 2, a placing table 5 installed on the base 1 through a first support 4, a first feeding mechanism 6 arranged on the placing table 5, two first bearing blocks 11 installed on the placing table 5, a guide rail 12 installed on the base 1, a moving frame 13 slidably connected to the guide rail 12, a fourth electric hydraulic rod 14 installed on the base 1 and arranged on the left side of the moving frame 13, a rotating shaft 15 rotatably connected to the moving frame 13, a first motor 16 arranged outside the moving frame 13 and installed at one end of the front face of the rotating shaft 15, two second bearing blocks 17 fixedly connected to the rotating shaft 15, two extension rods 18 fixedly connected to the side face of the rotating shaft 15, two bearing rods 19 installed on the extension rods 18, a clamping mechanism 20 arranged outside the rotating shaft 15, a gantry 7 installed on the base 1, a horizontal moving assembly 8 arranged on the gantry 7, a vertical moving assembly 9 installed below the horizontal moving assembly 8, a second feeding mechanism 10 installed at the bottom end of the vertical moving assembly 9, and a semicircular groove formed in the bearing rod 19.

[0048] When the guardrail is welded, the main pipes and branch pipes required by the guardrail are respectively placed in the first feeding mechanism 6 and the second feeding mechanism 10, the main pipes are fed through the first feeding mechanism 6, the branch pipes are automatically fed through the second feeding mechanism 10, the fourth electric hydraulic rod 14 is controlled to be shortened, the fourth electric hydraulic rod 14 drives the moving frame 13, the rotating shaft 15, the bearing rod 19 and the branch pipes to move to the left until the branch pipes are attached to the main pipes, at this time, the fourth electric hydraulic rod 14 is controlled to stop working, then the branch pipes are clamped through the clamping mechanism 20, the upper sides of the main pipes and the branch pipes are welded through the welding arm 3, after the welding is completed, the rotating shaft 15 and the second bearing blocks 17 are driven to rotate through the first motor 16, the main pipes and the branch pipes after the upper side welding are turned over, and the welding of the guardrail is quickly realized through the turning over, and the overall processing and production efficiency is ensured.

[0049] The first feeding mechanism 6 comprises a placing frame 61 and an extension receiving assembly 62, the second support 66 is installed below the placing frame 61 and fixedly connected to the placing table 5, the placing frame 61 is used for storing the main pipes of the guardrail, the movable top rod 63 is overlapped on the right side face of the placing frame 61, the second electric hydraulic rod 65 is fixedly connected below the movable top rod 63 and installed on the placing table 5, the movable top rod 63 and the partition plate 64 are overlapped on the right side face of the movable top rod 63 and installed on the placing table 5, and the upper surfaces of the movable top rod 63 and the partition plate 64 are provided with consistent inclined angles.

[0050] When the guardrail is produced and welded, the two main pipes required for guardrail production and the branch pipes connected between the main pipes are fed, and the main pipes required for the guardrail are directly placed in the placing frame 61. Due to the inclined arrangement of the placing frame 61, the main pipes in the placing frame 61 have a tendency to slide downward under the action of gravity, so there is a main pipe left on the movable top rod 63; the second electric hydraulic rod 65 is controlled to extend, the second electric hydraulic rod 65 drives the movable top rod 63 to move upward, until the upper surface of the movable top rod 63 is flush with the upper surface of the partition plate 64, because the upper surfaces of the movable top rod 63 and the partition plate 64 are arranged at the same inclination angle, the combination of the two forms a continuous inclined surface, at this time the main pipe on the movable top rod 63 slides to the right through the partition plate 64 and falls on the two first bearing blocks 11, completing the feeding and adding of the left main pipe. The feeding process of the main pipe is more accurate, the second electric hydraulic rod 65 drives the movable top rod 63 to move upward once to push out a main pipe, the feeding process of the main pipe is accurate and efficient, which ensures the efficiency of the guardrail welding process to a certain extent.

[0051] The extension receiving assembly 62 includes a mounting ring 621 fixedly connected outside the rotating shaft 15, a sliding frame 622 fixedly connected outside the mounting ring 621, a sliding rod 624 slidably connected inside the sliding frame 622, and a first electric hydraulic rod 623 fixedly connected to one end of the sliding rod 624 inside the sliding frame 622. The first electric hydraulic rod 623 is installed on the inner wall of the sliding frame 622, and the upper surface of the sliding rod 624 is flush with the upper surface of the sliding frame 622.

[0052] When the guardrail is produced and welded, the main pipes required for the guardrail are directly placed in the placing frame 61, and when the right main pipe required for the guardrail needs to be added, the rotating shaft 15, the extension rod 18 and the bearing rod 19 are first controlled to be rotated upward by the first motor 16 until the sliding frame 622 is flush with the partition plate 64, then the first electric hydraulic rod 623 is controlled to extend to drive the sliding rod 624 to move left until the left end of the sliding rod 624 abuts against the right side of the partition plate 64, at this time the partition plate 64, the sliding rod 624 and the sliding frame 622 form a continuous flat surface, then the second electric hydraulic rod 65 is controlled to extend, the main pipe is pushed upward by the movable top rod 63, and the main pipe rolls to the right along the partition plate 64, the sliding rod 624 and the sliding frame 622, and finally the main pipe rolls along the inclined surface and falls into the two second bearing blocks 17, completing the automatic feeding process of the right main pipe quickly, the main pipe feeding process is accurate and efficient, further ensuring the production efficiency of the guardrail.

[0053] The second feeding mechanism 10 comprises a storage barrel 101 installed at the bottom end of the longitudinal moving assembly 9, which is used for storing the support pipes of the guardrail, and third electric hydraulic rods 102 are installed on the left and right sides of the storage barrel 101, the end portions of the third electric hydraulic rods 102 are fixedly connected with vertical plates 103, the vertical plates 103 are installed with insertion rods 104 on the side close to the storage barrel 101, the insertion rods 104 are slidingly connected to the side of the storage barrel 101, the insertion rods 104 are inserted into the lowermost support pipe in the storage barrel 101 and are used for limiting the lowermost support pipe in the storage barrel 101, and the distance between the lower surface of the storage barrel 101 and the bearing rod 19 rotating to the horizontal state is smaller than the diameter of the support pipe and greater than the radius of the support pipe when the storage barrel 101 moves downward to the limit position.

[0054] During the welding process of the guardrail, the support pipes required by the guardrail are fed and added, the storage barrel 101 is directly controlled to move downward by the longitudinal moving assembly 9, and the third electric hydraulic rod 102 is controlled to extend to drive the insertion rod 104 to separate from the support pipe and release the limitation of the support pipe when the storage barrel 101 moves to the limit position of downward movement; the distance between the lower surface of the storage barrel 101 and the bearing rod 19 is greater than 1mm of the radius of the support pipe, and when the storage barrel 101 moves along the length direction of the bearing rod 19, the distance between the storage barrel 101 and the bearing rod 19 is smaller than the diameter of the support pipe, so that the lowermost support pipe in the storage barrel 101 cannot be removed from the storage barrel 101 without moving to the semicircular groove position, but can only slide along the surface of the bearing rod 19; the storage barrel 101 moves to the semicircular groove position on the bearing rod 19 and stays for a short time, the support pipe falls into the semicircular groove on the bearing rod 19, and then the storage barrel 101 is driven by the transverse moving assembly 8 to move along the length direction of the bearing rod 19, gradually feeding the support pipe into each semicircular groove, quickly and accurately completing the feeding of the support pipe, and automatically and efficiently completing the feeding of the support pipe, thereby ensuring the efficiency of the welding process of the guardrail.

[0055] The clamping mechanism 20 comprises a pressing plate 201, two intermediate rods 202 are installed on the pressing plate 201, the intermediate rods 202 are sleeved outside the rotating shaft 15, a first gear 203 is installed outside the intermediate rod 202, a second gear 204 is engaged below the first gear 203, a second motor 205 is installed outside the second gear 204, and a fixed plate 206 is fixedly connected outside the rotating shaft 15.

[0056] During the welding process of the guardrail, after both the main pipe and the branch pipe have been fed, it is necessary to control the branch pipe to fit against the surface of the main pipe. At this time, the second motor 205 is activated. The second motor 205 drives the intermediate rod 202 and the pressure plate 201 to rotate to the left through the second gear 204 and the first gear 203. The pressure plate 201 moves closer to the branch pipe until a certain gap is left between the pressure plate 201 and the surface of the branch pipe, forming a "virtual pressure" state. At the same time, the first motor 16 is activated. The first motor 16 controls the rotating shaft 15 and the branch pipe to rotate in the vertical direction. When the branch pipe rotates to an inclined position, it slides downward due to gravity, and the bottom end of the branch pipe will abut against the surface of the main pipe. Since both ends of the branch pipe have the same curvature as the surface of the main pipe... The curved surface of the branch pipe end is squeezed by the main pipe and will adjust and rotate itself, so that the contact surface between the branch pipe and the main pipe is automatically corrected and fitted. Then, the second motor 205 is controlled to work. The second motor 205 drives the intermediate rod 202 and the pressure plate 201 to rotate to the left through the second gear 204 and the first gear 203 until the pressure plate 201 presses on the surface of the branch pipe, completing the clamping of the branch pipe. After the welding of one side between the branch pipe and the main pipe is completed, the clamping of the branch pipe by the pressure plate 201 keeps the branch pipe flipping process stable, making the branch pipe feeding process efficient and accurate, without the need to manually adjust the fit between the branch pipe and the main pipe, making the production and welding process of the guardrail smoother and more efficient.

[0057] The storage tank 101 is provided with a transition section 21, which is used to temporarily store a single branch pipe.

[0058] The height of the transition section 21 is 6mm larger than the diameter of the branch pipe, allowing one branch pipe to be stored at a time. This is used when the storage bin 101 moves horizontally and before it reaches the semi-circular groove, the branch pipe inside the storage bin 101 enters the transition section 21. This facilitates the quick drop of a single branch pipe into the semi-circular groove when it reaches the corresponding position. The branch pipe inside the storage bin 101 can prepare to fall in advance during the gap in the process of moving to the semi-circular groove, making the feeding operation of the branch pipe more precise and efficient.

[0059] A groove is provided under the pressure plate 201, which is used for the pressure plate 201 to press the branch pipe.

[0060] The groove design increases the contact area between the pressure plate 201 and the branch pipe when they are pressed together. The arc-shaped surface is less likely to cause compression deformation when pressing the branch pipe. The groove and the semi-circular groove work together to achieve stable and safe positioning and clamping of the branch pipe, making the welding process between the branch pipe and the main pipe more stable.

[0061] Both the upper surfaces of the sliding frame 622 and the sliding rod 624 are provided with an anti-slip layer 625, and the anti-slip layer 625 has horizontal textures.

[0062] When the right main pipe is added, since the main pipe moves along the sliding rod 624 and the sliding frame 622, if the main pipe slides on the surface of the sliding frame 622 and the sliding rod 624, the moving amplitude of the front and back of the main pipe cannot be controlled, the main pipe is prone to tilt, and even cannot fall into the second bearing block 17; during the feeding process of the right main pipe, since the friction between the main pipe and the anti-skid layer 625 is large, and the transverse texture is arranged, the main pipe can only roll on the surface of the anti-skid layer 625, and the moving amplitudes of the front and back of the main pipe are the same when the main pipe rolls along the anti-skid layer 625, so that the main pipe does not tilt or move back and forth during the rolling and falling process, ensures that the main pipe falls into the second bearing block 17 smoothly and accurately, and makes the feeding process accurate and stable, and ensures that the production welding process is accurate to a certain extent.

[0063] The inner wall of the second bearing block 17 is provided with a rubber layer, which is used to buffer the impact of the main pipe falling into the second bearing block 17.

[0064] The rubber layer is adopted to buffer the impact of the main pipe falling into the second bearing block 17, so that the main pipe feeding process is safer, and the rubber layer increases the friction between the main pipe and the second bearing block 17, so that the main pipe is more stable in the second bearing block 17 when the branch pipe abuts against the surface of the main pipe, and the main pipe is not easy to fall off from the second bearing block 17, so that the safety of the main pipe feeding process is better.

[0065] The lower surface of the pressing plate 201 is provided with a Teflon layer, which is used to reduce the friction between the pressing plate 201 and the branch pipe.

[0066] The Teflon layer is adopted, so that the friction between the pressing plate 201 and the branch pipe is small, the pressing plate 201 moves close to the branch pipe to leave a certain gap between the pressing plate 201 and the surface of the branch pipe, and a "virtual pressing" state is formed between the two, so that when the branch pipe is fitted between the turning correction position and the main pipe, the friction between the pressing plate 201 and the branch pipe is small, the branch pipe can be turned more smoothly, and the process of fitting the branch pipe in the main pipe surface in the correction position is efficient and accurate.

[0067] Working principle, in use:

[0068] When the guardrail is produced and welded, the main pipe and the branch pipe required by the guardrail are directly placed in the placing frame 61 and the storage barrel 101 respectively, then the second electric hydraulic rod 65 is controlled to extend until the upper surface of the movable top rod 63 is flush with the upper surface of the partition plate 64, at this time the main pipe on the movable top rod 63 slides to the right and falls on the two first bearing blocks 11, then the first electric hydraulic rod 623 is controlled to extend, the first electric hydraulic rod 623 extends to control the sliding rod 624 to move left until the left end of the sliding rod 624 abuts against the right side surface of the partition plate 64, at this time the partition plate 64, the sliding rod 624 and the upper surface of the sliding frame 622 form a continuous flat surface, then the second electric hydraulic rod 65 is controlled to shorten, the movable top rod 63 moves to the initial position, at this time the main pipe in the placing frame 61 slides downward to the movable top rod 63, then the second electric hydraulic rod 65 is controlled to extend, the main pipe is lifted upward by the movable top rod 63, the main pipe rolls rightward along the partition plate 64, the sliding rod 624 and the sliding frame 622, and finally the main pipe rolls along the inclined surface and falls into the two second bearing blocks 17, at this time the feeding operation of the main pipe is completed, then the first electric hydraulic rod 623 is controlled to shorten, and the sliding rod 624 is controlled to move to the initial position;

[0069] Then the first motor 16 controls the rotating shaft 15, the extension rod 18 and the bearing rod 19 to rotate downward to be horizontal, and the controller controls the transverse moving assembly 8 and the longitudinal moving assembly 9 to work, the longitudinal moving assembly 9 controls the storage barrel 101 to move downward until the distance between the lower surface of the storage barrel 101 and the bearing rod 19 is greater than 1mm of the radius of the branch pipe, at this time the third electric hydraulic rod 102 is controlled to extend to drive the insertion rod 104 to separate from the branch pipe, and at the same time the storage barrel 101 is temporarily stopped at the position corresponding to the semicircular groove on the bearing rod 19, the branch pipe falls into the semicircular groove on the bearing rod 19, then the transverse moving assembly 8 drives the storage barrel 101 to move backward, gradually feeding the branch pipe into each semicircular groove, after the feeding of the branch pipe is completed, the third electric hydraulic rod 102 is controlled to shorten to drive the insertion rod 104 to insert into the branch pipe, completing the blocking and limiting of the branch pipe in the storage barrel 101, then the longitudinal moving assembly 9 controls the storage barrel 101 to move upward above the sliding rod 624, and the transverse moving assembly 8 drives the storage barrel 101 to move in front of the main pipe, completing the feeding process of the branch pipe;

[0070] Then the second motor 205 is controlled to work, the second motor 205 drives the intermediate rod 202 and the pressing plate 201 to rotate to the left through the second gear 204 and the first gear 203, until the pressing plate 201 approaches the branch pipe and is virtually pressed on the surface of the branch pipe, at this time the second motor 205 is controlled to stop working, and the first motor 16 is controlled to work, the first motor 16 controls the rotating shaft 15 and the branch pipe to rotate towards the vertical direction, the branch pipe is rotated to be inclined, and due to the gravity, the bottom end of the branch pipe is abutted on the surface of the main pipe, since the two ends of the branch pipe are provided with the arc surfaces with the same arc as the main pipe, the arc surface of the end of the branch pipe is adjusted and rotated due to the extrusion of the main pipe, so that the contact surface between the branch pipe and the main pipe is automatically corrected and adhered; then the second motor 205 is controlled to reverse, the second motor 205 drives the intermediate rod 202 and the pressing plate 201 to rotate through the second gear 204 and the first gear 203, the pressing plate 201 presses the branch pipe tightly, then the first motor 16 drives the rotating shaft 15 to rotate to the left to be horizontal, and the fourth electric hydraulic rod 14 is controlled to shorten, the fourth electric hydraulic rod 14 drives the moving frame 13, the rotating shaft 15, the bearing rod 19 and the branch pipe to move to the left, until the left end of the branch pipe adheres to the main pipe on the left side, at this time the fourth electric hydraulic rod 14 is controlled to stop working, then the welding arm 3 is controlled to weld between the main pipe and the branch pipe; when the welding on the upper side of the main pipe and the branch pipe is finished, the first motor 16 drives the rotating shaft 15, the second bearing block 17, the bearing rod 19, the main pipe and the branch pipe to rotate to the right, the rotating shaft 15 is controlled to shorten while rotating, so that the main pipe and the branch pipe rotate around the rotating shaft 15, and the right main pipe moves to the left, until the main pipe and the branch pipe are turned over and rotated to be horizontal, and the main pipe and the branch pipe are above the base 1, at this time the first motor 16 and the fourth electric hydraulic rod 14 are controlled to stop working, the welding arm 3 is controlled to weld the main pipe and the branch pipe, at this time the welding on the upper and lower sides of the main pipe and the branch pipe is finished.

[0071] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A welding device for producing aluminum railings, comprising a base (1), characterized in that, An extension seat (2) is fixedly connected to the right side of the base (1). A welding arm (3) is installed on the extension seat (2). A placement platform (5) is installed on the base (1) via a first support column (4). A first feeding mechanism (6) is provided on the placement platform (5). Two first bearing blocks (11) are installed on the placement platform (5). A guide rail (12) is installed on the base (1). A movable frame (13) is slidably connected inside the guide rail (12). A fourth electric hydraulic rod (14) is installed on the left side of the movable frame (13) and is mounted on the base (1). A rotating shaft (15) is rotatably connected inside the movable frame (13). One end of the rotating shaft (15) is on the front side. A first motor (16) is installed outside the movable frame (13). Two second bearing blocks (17) are fixedly connected to the outside of the rotating shaft (15). Two extension rods (18) are fixedly connected to the side of the rotating shaft (15). Two bearing rods (19) are installed on the extension rods (18). A clamping mechanism (20) is provided outside the rotating shaft (15). A gantry frame (7) is installed on the base (1). A transverse moving component (8) is provided on the gantry frame (7). A longitudinal moving component (9) is installed below the transverse moving component (8). A second feeding mechanism (10) is installed at the bottom of the longitudinal moving component (9). A semi-circular groove is opened on the bearing rod (19). The first feeding mechanism (6) includes a placement frame (61) and an extension receiving component (62). A second support column (66) is installed under the placement frame (61). The second support column (66) is fixedly connected to the placement platform (5). The placement frame (61) is used to store the main pipe of the guardrail. A movable top rod (63) is attached to the right side of the placement frame (61). A second electric hydraulic rod (65) is fixedly connected to the lower side of the movable top rod (63). The second electric hydraulic rod (65) is installed on the placement platform (5). A partition (64) is attached to the right side of the movable top rod (63). The partition (64) is installed on the placement platform (5). The upper surfaces of the movable top rod (63) and the partition (64) are inclined at the same angle. The second feeding mechanism (10) includes a storage bin (101), which is installed at the bottom of the longitudinal moving component (9). The storage bin (101) is used to store the branch pipe of the guardrail. A third electric hydraulic rod (102) is installed on both the left and right sides of the storage bin (101). A vertical plate (103) is fixedly connected to the end of the third electric hydraulic rod (102). A plug rod (104) is installed on the side of the vertical plate (103) near the storage bin (101). The plug rod (104) is slidably connected to the side of the storage bin (101). The plug rod (104) is inserted into the lowest branch pipe in the storage bin (101) to limit the lowest branch pipe in the storage bin (101). The distance between the lower surface of the storage bin (101) and the bearing rod (19) rotated to the horizontal state at the limit position of the downward movement is less than the diameter of the branch pipe and greater than the radius of the branch pipe. The clamping mechanism (20) includes a pressure plate (201), on which two intermediate rods (202) are mounted. The intermediate rods (202) are sleeved on the outside of the rotating shaft (15). A first gear (203) is mounted on the outside of the intermediate rods (202). A second gear (204) meshes with the first gear (203). A second motor (205) is mounted on the outside of the second gear (204). A fixing plate (206) is mounted on the outside of the second motor (205). The fixing plate (206) is fixedly connected to the outside of the rotating shaft (15).

2. The welding device for producing aluminum guardrails according to claim 1, characterized in that, The extended receiving assembly (62) includes a mounting ring (621) fixedly connected to the outside of the rotating shaft (15). A sliding frame (622) is fixedly connected to the outside of the mounting ring (621). A sliding rod (624) is slidably connected inside the sliding frame (622). A first electric hydraulic rod (623) is fixedly connected to one end of the sliding rod (624) inside the sliding frame (622). The first electric hydraulic rod (623) is installed on the inner wall of the sliding frame (622). The upper surface of the sliding rod (624) is flush with the upper surface of the sliding frame (622).

3. The welding device for producing aluminum guardrails according to claim 1, characterized in that, The storage tank (101) is provided with a transition section (21) for temporarily storing a single branch pipe.

4. The welding device for producing aluminum guardrails according to claim 1, characterized in that, The pressure plate (201) has a groove on its underside, which is used for the pressure plate (201) to press the branch pipe.

5. The welding device for producing aluminum guardrails according to claim 2, characterized in that, The upper surfaces of the sliding frame (622) and the sliding rod (624) are provided with an anti-slip layer (625), and the anti-slip layer (625) has transverse textures.

6. The welding device for producing aluminum guardrails according to claim 1, characterized in that, The inner wall of the second bearing block (17) is provided with a rubber layer, which is used to buffer the impact of the main pipe falling into the second bearing block (17).

7. The welding device for producing aluminum guardrails according to claim 4, characterized in that, The lower surface of the pressure plate (201) is provided with a Teflon layer to reduce the friction between the pressure plate (201) and the branch pipe.

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