A flange welding device for flange pipe fitting production

Abstract

This invention discloses a flange welding device for flange pipe fitting production, relating to the field of flange pipe fitting welding technology. The invention includes a base, a welding chamber at the top of the base, a driving assembly on the left side of the welding chamber, a worktable at the center of the top of the base with a positioning groove on its top, an electric telescopic rod at the center of the top of the inner wall of the welding chamber, and a welding assembly at the bottom of the telescopic end of the electric telescopic rod; anti-scratch devices are symmetrically arranged inside the welding chamber. This invention relies on a vertical rod to achieve a brushing motion of a soft brush plate against the outer wall of flanges of different sizes, preventing particulate impurities adhering to the outer wall of the flange from causing scratches and appearance defects during the clamping process of the curved clamping plate. It also avoids gaps caused by particulate obstruction preventing the curved clamping plate from fully adhering to the outer wall of the flange.

Description

Technical Field

[0001] This invention relates to the field of flange and pipe fitting welding technology, specifically to a flange welding device for flange and pipe fitting production. Background Technology

[0002] Flange fittings are a type of welded pipe fitting, referring to pipe fittings with flanges or flanges. Flange fittings are mainly used for pipe matching and connection, and can be seen everywhere in daily life. With the continuous advancement of production technology, the production process of flange fittings is also constantly being optimized.

[0003] Patent publication number CN215824646U discloses a flange welding device for flange pipe fitting production, including an operating table. The top of the operating table has a clamping structure and a fixing structure. The clamping structure includes two fixing plates. Each fixing plate has a mounting screw movably mounted on one side of its opposite side, with one end penetrating and extending to its opposite side. Mounting sleeves are movably mounted on the outer surfaces of both mounting screws. First mounting buckles are fixedly mounted on the tops of both mounting sleeves. Second mounting buckles are fixedly mounted on the opposite sides of both fixing plates. Telescopic rods are movably mounted between the bottoms of the two second mounting buckles and the tops of the two first mounting buckles. This flange welding device for flange pipe fitting production, by incorporating a clamping structure, allows for adjustment of the clamping range, thus facilitating the clamping of pipe fittings of different sizes.

[0004] However, the device still has shortcomings: the device can change the clamping range to adapt to different sizes of pipe fittings, but during the clamping process, the clamping structure and the outer wall of the flange are in sliding contact. Therefore, when there are particulate impurities on the flange surface, the clamping structure can easily push the particles to slide and rub on the flange surface and leave scratches during the clamping process, causing certain defects to the appearance of the flange. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a flange welding device for flange pipe fitting production, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a flange welding device for flange pipe fitting production, comprising a base, a welding chamber provided on the top of the base, a driving component provided on the left side of the welding chamber, a workbench provided at the center of the top of the base, and a positioning groove provided on the top of the workbench, an electric telescopic rod provided at the center of the top of the inner wall of the welding chamber, and a welding component provided at the bottom of the telescopic end of the electric telescopic rod.

[0007] The welding chamber is symmetrically equipped with anti-scratch devices, the top of the anti-scratch devices is equipped with anti-corrosion devices, and the inner side of the anti-corrosion devices is equipped with anti-accumulation devices.

[0008] The anti-scratch device includes two electric push rods, which are symmetrically and fixedly installed on the inner wall of the welding chamber. An arc-shaped block is fixedly installed on the side of the electric push rod near the worktable. An arc-shaped clamping plate is hinged to the side of the arc-shaped block away from the axis of the worktable. A rubber pad is fixedly installed on the side of the arc-shaped clamping plate near the axis of the worktable. Several slide rails are symmetrically and fixedly installed on the inner wall of the U-shaped groove of the arc-shaped clamping plate. A vertical rod is slidably installed inside the slide rail. Friction rollers are symmetrically and rotatably installed on the outer walls of both ends of the vertical rod. Several soft brush plates are fixedly installed at equal intervals on the side of the friction roller near the middle of the vertical rod.

[0009] According to the above technical solution, a torsion spring is provided between the arc-shaped block and the arc-shaped clamping plate. A U-shaped groove is opened at the end of the arc-shaped clamping plate near the worktable. Springs are provided between the two ends of the vertical rod and the inside of the slide rail. Friction rollers penetrate the outer walls of the two ends of the vertical rod. The flange to be welded is placed inside the positioning groove of the worktable. The electric push rod is activated. The extension end of the electric push rod drives the arc-shaped block to move towards the center of the welding chamber. The arc-shaped block drives the arc-shaped clamping plate to move synchronously. The arc-shaped clamping plate drives the rubber pad to move synchronously. When the arc surfaces of the arc-shaped clamping plates on both sides synchronously contact the arc surface of the outer wall of the flange, a resistance force is generated. As the arc-shaped clamping plate continues to move, the resistance force is continuously amplified. At this time, the hinge shaft between the arc-shaped clamping plate and the arc-shaped block begins to rotate to different degrees according to the magnitude of the resistance force. When the hinge shaft of the arc-shaped clamping plate rotates, it drives the arc-shaped clamping plate to move away from the axis of the worktable in an arc. The arc-shaped clamping plate moves synchronously with the rubber pad. After the arc-shaped clamping plate is clamped, the welding assembly moves downward through the telescopic end of the electric telescopic rod and welds the flange. When the arc-shaped clamping plate moves towards the center of the welding chamber, it drives the slide rail to move synchronously. The slide rail drives the vertical rod to move synchronously. When the vertical rod drives the friction roller to contact the outer wall of the flange of different sizes, it will generate a resistance force and friction force. When the friction roller generates a resistance force between the friction roller and the outer wall of the flange, it causes the vertical rod to be stressed synchronously. Then, it causes the vertical rod to slide along the inside of the slide rail for orientation adjustment. The spring between the vertical rod and the inside of the slide rail ensures that the outer wall of the friction roller is always in close contact with the outer wall of the flange. When the friction roller generates a friction force between it and the outer wall of the flange during the movement, it begins to rotate along the inner wall of the U-shaped groove of the arc-shaped clamping plate. The friction roller drives the soft brush plate to rotate along the outer wall of the flange.

[0010] According to the above technical solution, the anti-corrosion device includes two U-shaped plates, a crossbar, a bending baffle and a heating component. The bottoms of the two U-shaped plates are symmetrical and fixedly installed on the top of the arc block. Both ends of the crossbar are fixedly installed inside the square groove of the left U-shaped plate. The bending baffle is penetrated through the inside and fixedly installed on the outer wall of the crossbar. The left side of the heating component is fixedly installed on the left side of the inner wall of the left U-shaped plate.

[0011] According to the above technical solution, the top of the U-shaped plate is provided with a square groove, the top of the bending baffle is slidably installed on the top of the inner wall of the welding chamber, the bottom of the inner wall of the bending baffle is in contact with the bottom of the welding assembly, when the arc block moves towards the center of the welding chamber, it drives the U-shaped plate to move synchronously, the U-shaped plate drives the crossbar to move synchronously, when the crossbar drives the bending baffle to move synchronously, the bottom of the inner wall of the bending baffle is released from the obstruction of the welding port at the bottom of the welding assembly, and at the same time, the heating assembly is preheated when preparing for welding, and the heating assembly is preheated inside the welding chamber by heating the chamber, and the range of motion of the heating assembly is expanded during the movement of the U-shaped plate.

[0012] According to the above technical solution, the anti-corrosion device further includes a transmission plate, a sliding column, an inclined plate, an L-shaped insulation plate, and a connecting plate. The transmission plate is hinged between the right side of the heating assembly and the left side of the outer wall of the fixed end of the electric telescopic rod. The outer wall of the sliding column is slidably installed on the left side of the inner wall of the U-shaped plate located at the left end. The top of the outer wall of the sliding column contacts the bottom of the heating assembly. The top of the inclined plate is hinged to the bottom of the outer wall of the sliding column. The L-shaped insulation plate is slidably installed inside the U-shaped plate with a spring passing through it at one end near the axis of the welding chamber. The side of the L-shaped insulation plate near the axis of the welding chamber is hinged to the bottom of the inclined plate. Both sides of the connecting plate are fixedly installed on the side of the L-shaped insulation plate near the center of the welding chamber. The heating assembly moves towards... When the welding chamber moves in the center direction, it drives the transmission plate to move synchronously. The top of the transmission plate is limited by the outer wall of the fixed end of the electric telescopic rod, which causes the hinge shaft of the transmission plate to generate a rotational force and pushes the heating component to slide down along the inner wall of the U-shaped plate. At this time, the heating component performs preheating treatment on the welding component before welding. At the same time, the heating component presses the sliding column to slide down along the inner wall of the U-shaped plate. During the downward movement of the sliding column, it drives the inclined plate to move synchronously. The bottom of the inclined plate is restricted by the L-shaped insulation plate, which causes its own hinge shaft to start rotating. The inclined plate pushes the L-shaped insulation plate to extend away from the axis of the welding chamber around the hinge shaft. At the same time, the left L-shaped insulation plate pulls the right L-shaped insulation plate to extend synchronously through the connecting plate.

[0013] According to the above technical solution, the anti-hoarding device includes an L-shaped pull plate, several anti-slip wheels, a convex panel, a contact plate, a flat plate, and a hollow column. The L-shaped pull plate is fixedly installed on the inner wall of the L-shaped insulation board on the side away from the axis of the welding chamber. The several anti-slip wheels are symmetrically and rotatably installed on the inner wall of the sliding groove of the L-shaped pull plate. The convex panel is fixedly installed on the outer wall of the L-shaped pull plate on the side close to the U-shaped plate. The outer wall of the contact plate is slidably installed on the inner edge of the U-shaped plate through a spring. The bottom of the flat plate is fixedly installed on the top of the contact plate. The top of the hollow column is fixedly installed on the bottom of the flat plate.

[0014] According to the above technical solution, the L-shaped pull plate has a groove on the side near the U-shaped plate, the outer wall of the anti-slip wheel contacts the inner wall of the U-shaped plate, the bottom arc surface of the contact plate is located on the movement trajectory of the convex panel, the bottom of the hollow column contacts the top of the U-shaped plate, and when the L-shaped insulation plate extends away from the welding chamber, it drives the L-shaped pull plate to move synchronously. The L-shaped pull plate drives the anti-slip wheel to slide and rub synchronously along the inner wall of the U-shaped plate. The anti-slip wheel starts to rotate along the inner wall of the groove of the L-shaped pull plate through friction. At the same time, the L-shaped pull plate drives the convex panel to move synchronously. During the movement of the convex panel, its own arc surface will contact the arc surface of the contact plate. Under the guidance of the arc surface of the convex panel, the contact plate is pushed to move upward along the inside of the U-shaped plate. The contact plate drives the flat plate to move synchronously. The flat plate drives the hollow column to disengage from the contact with the top of the U-shaped plate. When the arc surface of the convex panel passes the contact plate, the contact plate no longer stretches the spring. The spring quickly returns to its original state from the stored state and drives the hollow column to strike the top of the U-shaped plate to generate vibration. This process is repeated.

[0015] According to the above technical solution, the anti-hoarding device further includes a reciprocating screw, a U-shaped sliding plate, and a wave plate. Both ends of the reciprocating screw are fixedly installed on the side of the anti-slip wheel near the center of the L-shaped pull plate. The U-shaped sliding plate is internally penetrated and movably installed on the outer wall of the reciprocating screw. The end of the U-shaped sliding plate away from the inner wall of the U-shaped plate is slidably installed on the inner wall of the L-shaped pull plate. The end of the wave plate away from the inner wall of the U-shaped plate is fixedly installed on the outer wall of the U-shaped sliding plate. When the anti-slip wheel rotates, it drives the reciprocating screw to rotate. When the reciprocating screw rotates, the reciprocating spiral groove on its outer wall restricts the internal locking block of the U-shaped sliding plate, causing the reciprocating screw to drive the U-shaped sliding plate to slide longitudinally back and forth along the inner wall of the L-shaped pull plate. The U-shaped sliding plate drives the wave plate to move synchronously.

[0016] This invention provides a flange welding device for flange pipe fitting production. It has the following advantages:

[0017] (1) The present invention, through the setting of the anti-scratch device, through the cooperation of electric push rod, arc block, arc clamping plate, rubber pad, slide rail, vertical rod, friction roller and soft brush plate, enables the arc clamping plate to adaptively clamp flanges of different sizes during the clamping process. At the same time, the friction of the outer wall of the rubber pad effectively improves the clamping tightness of the arc clamping plate on the flange, ensuring the stability of the flange welding process, and reducing the participation of workers, thereby simplifying the welding preparation process and improving the practicality of the equipment. In addition, the vertical rod enables the soft brush plate to brush against the outer wall of flanges of different sizes, preventing the outer wall of the flange from being covered with particulate impurities, which would cause the particulate matter to be pushed and scratch the outer wall of the flange during the clamping process of the arc clamping plate, thus causing appearance defects. At the same time, it avoids the arc clamping plate from being unable to fully adhere to the outer wall of the flange due to the obstruction of particulate matter, thus leaving gaps and preventing the clamping stability from decreasing to a certain extent.

[0018] (2) The present invention, through the setting of the anti-corrosion device, through the cooperation of arc block, U-shaped plate, cross bar, bent baffle, heating component, transmission plate, sliding column, inclined plate, L-shaped insulation plate and connecting plate, relies on the U-shaped plate to effectively expand the heat distribution range of the heating component, ensuring uniform preheating inside the welding chamber. At the same time, the bent baffle shields the welding joint of the welding component when not in use, preventing the welding joint of the welding component from being attached to external dirt when it is stationary, and preventing the welding component from reducing the flatness of the weld due to dirt when welding the flange, thereby reducing the welding quality. At the same time, the transmission plate realizes the orientation adjustment of the heating component, avoiding the increase in the probability of cold cracks at the welding joint when the welding component is cold-started to weld the flange. Meanwhile, the L-shaped insulation plate covers the welding area, shields the welding sparks and reduces the heat loss rate, ensuring that the temperature of the welding area is always balanced and avoiding stress concentration.

[0019] (3) The present invention uses an anti-accumulation device, which combines an L-shaped insulation board, an L-shaped pull plate, an anti-slip wheel, a convex panel, a contact plate, a flat plate, a hollow column, a reciprocating screw, a U-shaped sliding plate, and a wave plate. The L-shaped pull plate blocks the corner of the L-shaped insulation board, preventing heat from spreading and radiating to the connection between the L-shaped insulation board and the U-shaped board for a long time. This also prevents the L-shaped insulation board connection from being damaged due to accelerated oxidation caused by long-term and reciprocating heating and cooling. At the same time, the vibration force improves the smoothness of the L-shaped insulation board during extension and contraction, preventing jamming. Meanwhile, the arc surface of the wave plate guides the airflow speed between the adjacent interior of the U-shaped board and the L-shaped insulation board during the clamping and resetting process of the arc-shaped clamping plate. This prevents the inert gas inside from accumulating in the welding chamber for a long time after processing, which would reduce the oxygen content inside the welding chamber and result in insufficient oxide film formation during welding, thus reducing the filling effect of the welding. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the entire invention;

[0021] Figure 2 This is a cross-sectional schematic diagram of the entire invention;

[0022] Figure 3 This is a schematic diagram of the anti-scratch device of the present invention;

[0023] Figure 4 This is an enlarged schematic diagram of a portion of the anti-scratch device of the present invention;

[0024] Figure 5 This is a schematic diagram of the anti-corrosion device of the present invention;

[0025] Figure 6 This is a schematic diagram of the anti-corrosion device of the present invention from the right side.

[0026] Figure 7 This is a schematic diagram of the anti-hoarding device of the present invention;

[0027] Figure 8 This is a schematic diagram of the anti-hoarding device of the present invention from the left side.

[0028] In the diagram: 1. Base; 2. Welding chamber; 21. Drive assembly; 22. Workbench; 3. Electric telescopic rod; 31. Welding assembly; 4. Anti-scratch device; 41. Electric push rod; 42. Arc block; 43. Arc-shaped clamp; 44. Rubber pad; 45. Slide rail; 46. Vertical rod; 47. Friction roller; 48. Soft brush plate; 5. Anti-corrosion device; 51. U-shaped plate; 52. Horizontal bar; 53. Bending baffle; 54. Heating assembly; 55. Transmission plate; 56. Sliding column; 57. Inclined plate; 58. L-shaped insulation board; 59. Connecting plate; 6. Anti-sludge device; 61. L-shaped pull plate; 62. Anti-slip wheel; 63. Convex panel; 64. Contact plate; 65. Flat plate; 66. Hollow column; 67. Reciprocating screw; 68. U-shaped sliding plate; 69. Wave plate. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Please see Figures 1-8 An embodiment of the present invention is: a flange welding device for flange pipe fitting production, including a base 1, a welding chamber 2 is provided on the top of the base 1, a drive assembly 21 is provided on the left side of the welding chamber 2, a workbench 22 is provided at the center of the top of the base 1, and a positioning groove is provided on the top of the workbench 22. An electric telescopic rod 3 is provided at the center of the top of the inner wall of the welding chamber 2, and a welding assembly 31 is provided at the bottom of the telescopic end of the electric telescopic rod 3.

[0031] The welding chamber 2 is symmetrically equipped with anti-scratch devices 4, the top of the anti-scratch devices 4 is equipped with anti-corrosion devices 5, and the inside of the anti-corrosion devices 5 is equipped with anti-accumulation devices 6.

[0032] The anti-scratch device 4 includes two electric push rods 41, which are symmetrically and fixedly installed on the inner wall of the welding chamber 2. An arc-shaped block 42 is fixedly installed on the side of the electric push rod 41 near the worktable 22. An arc-shaped clamping plate 43 is hinged to the side of the arc-shaped block 42 away from the axis of the worktable 22. A rubber pad 44 is fixedly installed on the side of the arc-shaped clamping plate 43 near the axis of the worktable 22. Several slide rails 45 are symmetrically and fixedly installed on the inner wall of the U-shaped groove of the arc-shaped clamping plate 43. A vertical rod 46 is slidably installed inside the slide rail 45. Friction rollers 47 are symmetrically and rotatably installed on the outer walls of both ends of the vertical rod 46. Several soft brush plates 48 are fixedly installed at equal intervals on the side of the friction roller 47 near the middle of the vertical rod 46.

[0033] A torsion spring is provided between the arc-shaped block 42 and the arc-shaped clamping plate 43. A U-shaped groove is opened at the end of the arc-shaped clamping plate 43 near the worktable 22. Springs are provided between the two ends of the vertical rod 46 and the inside of the slide rail 45. Friction rollers 47 pass through the outer walls of the two ends of the vertical rod 46. Through the above cooperation, the arc-shaped clamping plate 43 can adaptively clamp flanges of different sizes during the clamping process. At the same time, the friction of the outer wall of the rubber pad 44 effectively improves the clamping tightness of the arc-shaped clamping plate 43 on the flange, ensuring the stability of the flange welding process, reducing the need for personnel intervention, simplifying the welding preparation process, and improving the practicality of the equipment. Through the above cooperation, the soft brush plate 48 is brushed against the outer wall of flanges of different sizes by the vertical rod 46, preventing the outer wall of the flange from being covered with particulate impurities, which would cause the particulate matter to be pushed and scratch the outer wall of the flange during the clamping process of the arc-shaped clamping plate 43, resulting in appearance defects. At the same time, it avoids the arc-shaped clamping plate 43 from being unable to fully adhere to the outer wall of the flange due to the obstruction of particulate matter, thus leaving gaps and preventing a certain degree of reduction in clamping stability.

[0034] In use, the flange to be welded is placed inside the positioning slot of the workbench 22. The electric push rod 41 is activated, and its extension end drives the arc-shaped block 42 towards the center of the welding chamber 2. The arc-shaped block 42 drives the arc-shaped clamping plate 43 to move synchronously, and the arc-shaped clamping plate 43 drives the rubber pad 44 to move synchronously. When the arc surfaces of the two arc-shaped clamping plates 43 simultaneously contact the outer arc surface of the flange, a resisting force is generated. As the arc-shaped clamping plate 43 continues to move, the resisting force is continuously amplified. At this time, the hinge shaft between the arc-shaped clamping plate 43 and the arc-shaped block 42 begins to rotate to different degrees according to the magnitude of the resisting force. When the arc-shaped clamping plate 43… When the hinge shaft rotates, it drives the arc-shaped clamping plate 43 to move in an arc-shaped trajectory away from the axis of the worktable 22. Simultaneously, the arc-shaped clamping plate 43 drives the rubber pad 44 to move synchronously. After the arc-shaped clamping plate 43 has clamped the flange, the welding assembly 31 moves downwards via the telescopic end of the electric telescopic rod 3 and welds the flange. This coordination enables the arc-shaped clamping plate 43 to adaptively clamp flanges of different sizes during the flange clamping process. At the same time, the friction of the outer wall of the rubber pad 44 effectively improves the clamping tightness of the arc-shaped clamping plate 43 on the flange, ensuring the stability of the flange welding process and reducing the need for manual intervention. The simplified welding preparation process enhances equipment usability. When the arc-shaped clamp 43 moves towards the center of the welding chamber 2, it drives the slide rail 45 to move synchronously. The slide rail 45 then drives the vertical rod 46 to move synchronously. When the vertical rod 46 drives the friction roller 47 to contact the outer wall of flanges of different sizes, it generates resistance and friction. When the friction roller 47 and the outer wall of the flange generate resistance, the vertical rod 46 is simultaneously subjected to force, causing it to slide along the inside of the slide rail 45 for orientation adjustment. Furthermore, the spring between the vertical rod 46 and the inside of the slide rail 45 ensures that the outer wall of the friction roller 47 remains in close contact with the outer wall of the flange. After friction is generated between the friction roller 47 and the outer wall of the flange during the movement, the roller 47 begins to rotate along the inner wall of the U-shaped groove of the arc-shaped clamp 43. The friction roller 47 drives the soft brush plate 48 to rotate along the outer wall of the flange. Through the above cooperation, the soft brush plate 48 is brushed against the outer wall of flanges of different sizes by the vertical rod 46. This prevents the outer wall of the flange from being covered with particulate impurities, which would cause the particulate matter to be pushed and scratch the outer wall of the flange during the clamping process of the arc-shaped clamp 43, thus causing appearance defects. At the same time, it avoids the arc-shaped clamp 43 from being unable to fully adhere to the outer wall of the flange due to the obstruction of particulate matter, thus leaving gaps and preventing the clamping stability from decreasing to a certain extent.

[0035] Please see Figures 1-8 Based on the above embodiments, another embodiment of the present invention further includes an anti-corrosion device 5;

[0036] The anti-corrosion device 5 includes two U-shaped plates 51, a crossbar 52, a bent baffle 53, and a heating component 54. The bottoms of the two U-shaped plates 51 are symmetrical and fixedly installed on the top of the arc block 42. Both ends of the crossbar 52 are fixedly installed inside the square groove of the left U-shaped plate 51. The bent baffle 53 is penetrated through the inside and fixedly installed on the outer wall of the crossbar 52. The left side of the heating component 54 is fixedly installed on the left side of the inner wall of the left U-shaped plate 51.

[0037] The top of the U-shaped plate 51 has a square groove, and the top of the bent baffle 53 is slidably installed on the top of the inner wall of the welding chamber 2. The bottom of the inner wall of the bent baffle 53 contacts the bottom of the welding assembly 31. Through the above cooperation, the U-shaped plate 51 effectively expands the heat distribution range of the heating assembly 54, ensuring uniform preheating inside the welding chamber 2. At the same time, the bent baffle 53 covers the welding joint of the welding assembly 31 when not in use, preventing the welding joint of the welding assembly 31 from being affected by external dirt when it is stationary. This prevents the welding assembly 31 from being affected by dirt when welding the flange, which would reduce the flatness of the weld and thus reduce the welding quality.

[0038] The anti-corrosion device 5 also includes a transmission plate 55, a sliding column 56, an inclined plate 57, an L-shaped insulation plate 58, and a connecting plate 59. The transmission plate 55 is hinged between the right side of the heating assembly 54 and the left side of the outer wall of the fixed end of the electric telescopic rod 3. The outer wall of the sliding column 56 is slidably installed on the left side of the inner wall of the U-shaped plate 51 located at the left end. The top of the outer wall of the sliding column 56 contacts the bottom of the heating assembly 54. The top of the inclined plate 57 is hinged to the bottom of the outer wall of the sliding column 56. The L-shaped insulation plate 58 is slidably installed inside the U-shaped plate 51 with a spring passing through one end near the axis of the welding chamber 2. The L-shaped insulation plate 58 is hinged to the bottom of the inclined plate 57 on the side near the axis of the welding chamber 2. The connecting plate 59 is fixedly installed on both sides of the L-shaped insulation plate 58 on the side near the center of the welding chamber 2. Through the above cooperation, the position of the heating component 54 is adjusted by the transmission plate 55 to avoid the increased probability of cold cracks at the welding point when the welding component 31 is cold-started to weld the flange. At the same time, the L-shaped insulation plate 58 covers the welding area, shields the welding sparks and reduces the rate of heat loss, and ensures that the temperature of the welding area is always balanced to avoid stress concentration.

[0039] In use, when the arc-shaped block 42 moves towards the center of the welding chamber 2, it drives the U-shaped plate 51 to move synchronously. The U-shaped plate 51 drives the crossbar 52 to move synchronously. When the crossbar 52 drives the bending baffle 53 to move synchronously, the bottom of the inner wall of the bending baffle 53 is no longer obstructed from the bottom welding joint of the welding assembly 31. At the same time, the heating assembly 54 is preheated during welding preparation. The heating assembly 54 preheats the welding chamber 2 by heating the inside of the welding chamber 2. Furthermore, the movement of the U-shaped plate 51 expands the range of motion of the heating assembly 54. The U-shaped plate 51 effectively expands the heat distribution range of the heating component 54, ensuring uniform preheating inside the welding chamber 2. Simultaneously, the bent baffle 53 shields the welding joint of the welding component 31 when not in use, preventing external contaminants from adhering to the joint during rest. This prevents contaminants from affecting the weld smoothness and thus reducing weld quality during welding of the flange. When the heating component 54 moves towards the center of the welding chamber 2, it drives the transmission plate 55 to move synchronously. The top of the transmission plate 55 is subjected to… When the electric telescopic rod 3 reaches the limit on the outer wall of the fixed end, it causes the hinge shaft of the transmission plate 55 to generate a rotational force and pushes the heating component 54 to slide downward along the inner wall of the U-shaped plate 51. At this time, the heating component 54 performs preheating treatment on the welding component 31 before welding. At the same time, the heating component 54 presses the sliding column 56 to slide downward along the inner wall of the U-shaped plate 51. During the downward movement of the sliding column 56, it drives the inclined plate 57 to move synchronously. The bottom of the inclined plate 57 is restricted by the L-shaped insulation plate 58, causing its own hinge shaft to start rotating. The inclined plate 57 rotates around the hinge shaft. The L-shaped insulation plate 58 is pushed to extend away from the axis of the welding chamber 2, and the left L-shaped insulation plate 58 is pulled by the connecting plate 59 to extend the right L-shaped insulation plate 58 synchronously. Through the above cooperation, the position of the heating component 54 is adjusted by the transmission plate 55 to avoid the welding component 31 from cold starting the welding flange, which would increase the probability of cold cracks at the welding point. At the same time, the L-shaped insulation plate 58 covers the welding area, shields the welding sparks and reduces the rate of heat loss, and ensures that the temperature of the welding area is always balanced to avoid stress concentration.

[0040] Please see Figures 1-8 Based on the above embodiments, another embodiment of the present invention further includes an anti-hoarding device 6;

[0041] The anti-hoarding device 6 includes an L-shaped pull plate 61, several anti-slip wheels 62, a convex panel 63, a contact plate 64, a flat plate 65, and a hollow column 66. The L-shaped pull plate 61 is fixedly installed on the inner wall of the L-shaped insulation plate 58 on the side away from the axis of the welding chamber 2. Several anti-slip wheels 62 are symmetrically and rotatably installed on the inner wall of the sliding groove of the L-shaped pull plate 61. The convex panel 63 is fixedly installed on the outer wall of the L-shaped pull plate 61 on the side close to the U-shaped plate 51. The outer wall of the contact plate 64 is slidably installed on the inner edge of the U-shaped plate 51 through a spring. The bottom of the flat plate 65 is fixedly installed on the top of the contact plate 64. The top of the hollow column 66 is fixedly installed on the bottom of the flat plate 65.

[0042] The L-shaped pull plate 61 has a groove on the side near the U-shaped plate 51. The outer wall of the anti-slip wheel 62 contacts the inner wall of the U-shaped plate 51. The bottom arc surface of the contact plate 64 is located on the movement trajectory of the convex plate 63. The bottom of the hollow column 66 contacts the top of the U-shaped plate 51. Through the above cooperation, the L-shaped pull plate 61 shields the corner of the L-shaped insulation board 58, preventing heat from spreading and radiating to the connection between the L-shaped insulation board 58 and the U-shaped plate 51 for a long time. This also prevents the surface of the L-shaped insulation board 58 from being damaged due to long-term and repeated heating and cooling, which accelerates the oxidation rate. At the same time, the vibration force improves the smoothness of the L-shaped insulation board 58 when it extends and retracts, preventing jamming.

[0043] The anti-accumulation device 6 also includes a reciprocating screw 67, a U-shaped sliding plate 68, and a corrugated plate 69. Both ends of the reciprocating screw 67 are fixedly installed on the side of the anti-slip wheel 62 near the center of the L-shaped pull plate 61. The U-shaped sliding plate 68 is internally penetrated and movably installed on the outer wall of the reciprocating screw 67. The end of the U-shaped sliding plate 68 away from the inner wall of the U-shaped plate 51 is slidably installed on the inner wall of the L-shaped pull plate 61. The end of the corrugated plate 69 away from the inner wall of the U-shaped plate 51 is fixedly installed on the outer wall of the U-shaped sliding plate 68. Through the above cooperation, relying on the arc-shaped guide of the corrugated plate 69, the airflow speed of the adjacent internal parts of the U-shaped plate 51 and the L-shaped insulation plate 58 is realized during the clamping and resetting process of the arc-shaped clamping plate 43. This prevents the inert gas inside from accumulating in the welding chamber 2 for a long time after processing, which would reduce the oxygen content inside the welding chamber 2 and result in insufficient oxide film formation during welding, thereby reducing the filling effect of the welding.

[0044] In use, as the L-shaped insulation plate 58 extends away from the welding chamber 2, it drives the L-shaped pull plate 61 to move synchronously. The L-shaped pull plate 61 drives the anti-slip wheel 62 to slide and rub synchronously along the inner wall of the U-shaped plate 51. The anti-slip wheel 62 begins to rotate along the inner wall of the slide groove of the L-shaped pull plate 61 due to friction. At the same time, the L-shaped pull plate 61 drives the convex plate 63 to move synchronously. During the movement of the convex plate 63, its own arc surface will contact the arc surface of the abutment plate 64. Under the guidance of the arc surface of the convex plate 63, the abutment plate 64 is pushed upward along the inside of the U-shaped plate 51. The contact plate 64 drives the flat plate 65 to move synchronously. The flat plate 65 drives the hollow column 66 to disengage from the top of the U-shaped plate 51. When the arc surface of the convex plate 63 passes the contact plate 64, the contact plate 64 no longer stretches the spring. The spring quickly returns to its original state from the stored state and drives the hollow column 66 to strike the top of the U-shaped plate 51 violently, generating vibration. This process is repeated, and through the transmission of force, the L-shaped insulation plate 58 extends with the vibration force. Through the above cooperation, the L-shaped pull plate 61 blocks the corners of the L-shaped insulation plate 58, avoiding... To prevent heat spread and prolonged radiation at the connection point between the L-shaped insulation board 58 and the U-shaped board 51, the connection of the L-shaped insulation board 58 is prevented from undergoing prolonged and repeated heating and cooling, which would accelerate oxidation and cause surface damage. Simultaneously, vibration improves the smoothness of the L-shaped insulation board 58's extension and contraction, preventing jamming. When the anti-slip wheel 62 rotates, it drives the reciprocating screw 67 to rotate. As the reciprocating screw 67 rotates, the reciprocating spiral groove on its outer wall restricts the internal locking block of the U-shaped sliding plate 68, causing the reciprocating screw 67 to drive the U-shaped sliding plate. Plate 68 slides longitudinally back and forth along the inner wall of L-shaped pull plate 61, and U-shaped slide plate 68 drives wave plate 69 to move synchronously. Through the above cooperation, relying on the arc surface guidance of wave plate 69, the airflow speed of adjacent internal parts of U-shaped plate 51 and L-shaped insulation plate 58 is realized during the clamping and resetting process of arc clamp plate 43. This avoids the accumulation of inert gas inside the welding chamber 2 after processing, which would reduce the oxygen content inside the welding chamber 2 and result in insufficient oxide film formation during welding, thereby reducing the filling effect of welding.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A flange welding device for flange pipe fitting production, comprising a base (1), characterized in that: The base (1) is provided with a welding chamber (2) at the top, and a drive assembly (21) is provided on the left side of the welding chamber (2). A workbench (22) is provided at the center of the top of the base (1), and a positioning groove is provided at the top of the workbench (22). An electric telescopic rod (3) is provided at the center of the top of the inner wall of the welding chamber (2), and a welding assembly (31) is provided at the bottom of the telescopic end of the electric telescopic rod (3). The welding chamber (2) is symmetrically provided with anti-scratch devices (4), the top of the anti-scratch devices (4) is provided with anti-corrosion devices (5), and the inside of the anti-corrosion devices (5) is provided with anti-accumulation devices (6). The anti-scratch device (4) includes two electric push rods (41). The two electric push rods (41) are symmetrical and fixedly installed on the inner wall of the welding chamber (2). An arc block (42) is fixedly installed on the side of the electric push rod (41) near the worktable (22). An arc-shaped clamp (43) is hinged on the side of the arc block (42) away from the axis of the worktable (22). A rubber pad (44) is fixedly installed on the side of the arc-shaped clamp (43) near the axis of the worktable (22). Several slide rails (45) are symmetrically installed on the inner wall of the U-shaped groove of the arc-shaped clamp (43). A vertical rod (46) is slidably installed inside the slide rail (45). Friction rollers (47) are symmetrically installed on the outer walls of both ends of the vertical rod (46). Several soft brush plates (48) are fixedly installed at equal distances on the side of the friction roller (47) near the middle of the vertical rod (46). A torsion spring is provided between the arc block (42) and the arc clamp (43). A U-shaped groove is provided at one end of the arc clamp (43) near the worktable (22). A spring is provided between the two ends of the vertical rod (46) and the inside of the slide rail (45). Friction rollers (47) pass through the outer walls of the two ends of the vertical rod (46). The anti-corrosion device (5) includes two U-shaped plates (51), a crossbar (52), a bent baffle (53), and a heating component (54). The bottoms of the two U-shaped plates (51) are symmetrical and fixedly installed on the top of the arc block (42). Both ends of the crossbar (52) are fixedly installed inside the square groove of the left U-shaped plate (51). The bent baffle (53) is installed through the inside and fixedly installed on the outer wall of the crossbar (52). The heating component (54) is fixedly installed on the left side of the inner wall of the left U-shaped plate (51). The top of the U-shaped plate (51) is provided with a square groove, the top of the bent baffle (53) is slidably installed on the top of the inner wall of the welding chamber (2), and the bottom of the inner wall of the bent baffle (53) is in contact with the bottom of the welding assembly (31). The anti-corrosion device (5) also includes a transmission plate (55), a sliding column (56), an inclined plate (57), an L-shaped insulation plate (58), and a connecting plate (59). The transmission plate (55) is hinged between the right side of the heating assembly (54) and the left side of the outer wall of the fixed end of the electric telescopic rod (3). The outer wall of the sliding column (56) is slidably installed on the left side of the inner wall of the U-shaped plate (51) located at the left end. The top of the outer wall of the sliding column (56) is in contact with the bottom of the heating assembly (54). The top of the inclined plate (57) is hinged to the bottom of the outer wall of the sliding column (56). The L-shaped insulation plate (58) is slidably installed inside the U-shaped plate (51) with a spring passing through one end near the axis of the welding chamber (2). The side of the L-shaped insulation plate (58) near the axis of the welding chamber (2) is hinged to the bottom of the inclined plate (57). Both sides of the connecting plate (59) are fixedly installed on the side of the L-shaped insulation plate (58) near the center of the welding chamber (2).

2. The flange welding device for flange pipe fitting production according to claim 1, characterized in that: The anti-hoarding device (6) includes an L-shaped pull plate (61), several anti-slip wheels (62), a convex panel (63), a contact plate (64), a flat plate (65), and a hollow column (66). The L-shaped pull plate (61) is fixedly installed on the inner wall of the L-shaped insulation plate (58) on the side away from the axis of the welding chamber (2). Several anti-slip wheels (62) are symmetrically and rotatably installed on the inner wall of the groove of the L-shaped pull plate (61). The convex panel (63) is fixedly installed on the outer wall of the L-shaped pull plate (61) on the side close to the U-shaped plate (51). The outer wall of the contact plate (64) is slidably installed on the inner edge of the U-shaped plate (51) through a spring. The bottom of the flat plate (65) is fixedly installed on the top of the contact plate (64). The top of the hollow column (66) is fixedly installed on the bottom of the flat plate (65).

3. The flange welding device for flange pipe fitting production according to claim 2, characterized in that: The L-shaped pull plate (61) has a groove on the side near the U-shaped plate (51), the outer wall of the anti-slip wheel (62) is in contact with the inner wall of the U-shaped plate (51), the bottom arc surface of the contact plate (64) is located on the movement trajectory of the convex plate (63), and the bottom of the hollow column (66) is in contact with the top of the U-shaped plate (51).

4. The flange welding device for flange pipe fitting production according to claim 3, characterized in that: The anti-hoarding device (6) also includes a reciprocating screw (67), a U-shaped sliding plate (68), and a wave plate (69). Both ends of the reciprocating screw (67) are fixedly installed on the side of the anti-slip wheel (62) near the center of the L-shaped pull plate (61). The U-shaped sliding plate (68) is internally penetrated and movably installed on the outer wall of the reciprocating screw (67). The end of the U-shaped sliding plate (68) away from the inner wall of the U-shaped plate (51) is slidably installed on the inner wall of the L-shaped pull plate (61). The end of the wave plate (69) away from the inner wall of the U-shaped plate (51) is fixedly installed on the outer wall of the U-shaped sliding plate (68).

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