Flange plate welding device for flange pipe fitting production

Abstract

The invention discloses a flange plate welding device for flanged pipe fitting production, and relates to the technical field of flanged pipe fitting welding. A driving assembly is arranged on the left side of the welding cavity; a workbench is arranged in the center of the top of the base; a positioning groove is formed in the top of the workbench; an electric telescopic rod is arranged in the center of the top of the inner wall of the welding cavity; and anti-scratch devices are symmetrically arranged in the welding cavity. By means of the vertical rods, fitting brushing of the soft brushing plates on the outer walls of flange plates of different sizes is achieved, and the situation that particle impurities are attached to the outer walls of the flange plates, and the outer walls of the flange plates are scratched by particles pushed in the clamping process of the arc-shaped clamping plates, so that appearance flaws are caused is prevented; meanwhile, gaps reserved due to the fact that the arc-shaped clamping plates cannot be fully attached to the outer wall of the flange plate due to particulate matter blocking are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of flange pipe fitting welding, in particular to a flange plate welding device for flange pipe fitting production. Background Art

[0002] Flange pipe fittings are a type of welded pipe fittings, which refers to pipe fittings with flange flanges or lands. Flange pipe fittings are mainly used for pipeline matching and connection and can be seen everywhere in life. With the continuous advancement of production technology, the production technology of flange pipe fittings has also been continuously optimized.

[0003] Patent announcement number CN215824646U discloses a flange welding device for flange pipe production, including an operating table, a clamping structure is provided on the top of the operating table, a fixing structure is provided on the top of the operating table, the inside of the clamping structure includes two fixing plates, the opposite sides of the two fixing plates are movably installed with a mounting screw with one end penetrating and extending to the opposite side thereof, the outer surfaces of the two mounting screws are movably installed with mounting sleeve rods, the tops of the two mounting sleeve rods are fixedly installed with a first mounting buckle, the opposite sides of the two fixing plates are fixedly installed with a second mounting buckle, and the bottoms of the two second mounting buckles are respectively movably installed with telescopic rods between the tops of the two first mounting buckles. The flange welding device for flange pipe production can change the size of the clamping range by providing a clamping structure, thereby facilitating the clamping of pipes of different sizes.

[0004] However, the device still has some shortcomings: the device can change the clamping range to adapt to pipes of different sizes, 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 surface of the flange, the clamping structure can easily push the particles to slide and rub on the surface of the flange and leave scratches during the process of clamping the flange, causing certain defects in the appearance of the flange. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a flange welding device for flange pipe production, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A flange welding device for flange pipe production, comprising a base, a welding chamber is arranged on the top of the base, a driving assembly is arranged on the left side of the welding chamber, a workbench is arranged at the center of the top of the base, and a positioning groove is opened on the top of the workbench, an electric telescopic rod is arranged at the center of the top of the inner wall of the welding chamber, and a welding assembly is arranged at the bottom of the telescopic end of the electric telescopic rod; The welding chamber is symmetrically provided with an anti-scratch device inside, an anti-corrosion device is provided on the top of the anti-scratch device, and an anti-stockpiling device is provided inside the anti-corrosion device; The anti-scratch device includes two electric push rods, which are symmetrically and fixedly installed on the inner wall of the welding chamber, a curved block is fixedly installed on the telescopic end of the electric push rod close to the workbench, an arc-shaped clamping plate is hinged on the side of the arc-shaped clamping plate away from the axis of the workbench, a rubber pad is fixedly installed on the side of the arc-shaped clamping plate close to the axis of the workbench, a plurality of 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, and a plurality of soft brush plates are fixedly installed at equal distances on the side of the friction roller close to the middle of the vertical rod.

[0007] According to the above technical scheme, a torsion spring is arranged between the arc block and the arc splint, a U-shaped groove is opened on one end of the arc splint close to the workbench, a spring is arranged between the two ends of the vertical rod and the inside of the slide rail, and the outer walls of the two ends of the vertical rod pass through the friction roller, and the flange to be welded is placed in the positioning groove of the workbench, and the electric push rod is started. The telescopic end of the electric push rod drives the arc block to move toward the center of the welding chamber, and the arc block drives the arc splint to move synchronously, and the arc splint drives the rubber pad to move synchronously. When the arc surfaces of the arc splints on both sides synchronously contact the arc surfaces of the outer walls of the flange, a resistance force is generated, and the resistance force is continuously amplified as the arc splint continues to move. At this time, the hinge shaft between the arc splint and the arc block starts to rotate to different degrees according to the size of the resistance force. When the hinge shaft of the arc splint rotates, the arc splint is driven to form an arc in the direction away from the axis of the workbench. The arc clamping plate moves in a U-shaped trajectory, and the arc clamping plate drives the rubber pad to move synchronously. When the arc 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 clamping plate moves toward the center of the welding chamber, it drives the slide rail to move synchronously, and the slide rail drives the vertical rod to move synchronously. When the vertical rod drives the friction roller to contact the outer walls of flanges of different sizes, resistance and friction forces will be generated. When resistance force is generated between the friction roller and the outer wall of the flange, the vertical rod is forced to be subjected to force synchronously, and then the vertical rod is caused to slide along the inside of the slide rail for azimuth adjustment. The spring between the vertical rod and the inside of the slide rail is set to cause the outer wall of the friction roller to always be close to the outer wall of the flange. When the friction roller generates friction with the outer wall of the flange during movement, it begins to rotate along the inner wall of the U-shaped groove of the arc clamping plate, and the friction roller drives the soft brush plate to rotate along the outer wall of the flange.

[0008] According to the above technical solution, the anti-corrosion device includes two U-shaped plates, a cross bar, a bent baffle and a heating assembly. The bottoms of the two U-shaped plates are symmetrical and fixedly installed on the top of the arc block. Both ends of the cross bar are fixedly installed inside the square groove of the left U-shaped plate. The bent baffle passes through the inside and is fixedly installed on the outer wall of the cross bar. The left side of the heating assembly is fixedly installed on the left side of the inner wall of the left U-shaped plate.

[0009] According to the above technical solution, a square groove is provided on the top of the U-shaped plate, and the top of the bending baffle is slidably installed on the top of the inner wall of the welding chamber, and 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 toward the center of the welding chamber, it drives the U-shaped plate to move synchronously, and the U-shaped plate drives the cross bar to move synchronously. When the cross bar drives the bending baffle to move synchronously, the bottom of the inner wall of the bending baffle releases the obstruction of the welding port at the bottom of the welding assembly. At the same time, the heating assembly is pre-started during the welding preparation work, and the inside of the welding chamber of the heating assembly is preheated, and the activity range of the heating assembly will be expanded during the movement of the U-shaped plate.

[0010] According to the above technical solution, the anti-corrosion device also 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 component 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 at the left end. The top of the outer wall of the sliding column contacts the bottom of the heating component. The top of the inclined plate is hinged to the bottom of the outer wall of the sliding column. The end of the L-shaped insulation plate close to the axis of the welding chamber is penetrated by a spring and slidably installed inside the U-shaped plate. The side of the L-shaped insulation plate close to 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 close to the center of the welding chamber. The heating component moves closer to the center of the welding chamber. When the welding chamber moves in the center direction, the transmission plate is driven 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 downward along the inner wall of the U-shaped plate. The heating component then performs preheating treatment on the welding component before welding. At the same time, the heating component presses the sliding column to slide downward along the inner wall of the U-shaped plate. During the downward movement of the sliding column, the inclined plate is driven to move synchronously. The bottom of the inclined plate is limited by the L-shaped insulation plate, causing 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 with the hinge shaft as the axis, and the left end L-shaped insulation plate pulls the right end L-shaped insulation plate to extend synchronously through the connecting plate.

[0011] According to the above technical scheme, the anti-hoarding device includes an L-shaped pull plate, a plurality of anti-skid 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 plate away from the axis of the welding chamber. The plurality of anti-skid wheels are symmetrically and rotatably installed on the inner wall of the L-shaped pull plate slide groove. The convex panel is fixedly installed on the outer wall of the L-shaped pull plate close to the U-shaped plate. The outer wall of the contact plate is penetrated by a spring and slidably installed on the inner edge of the U-shaped plate. The bottom of the flat plate is fixedly installed on the top of the contact plate, and the top of the hollow column is fixedly installed on the bottom of the flat plate.

[0012] The bottom arc surface of the resistance plate is located on the movement trajectory of the convex panel, and the bottom arc surface of the hollow column is in contact with the top of the U-shaped plate. When the L-shaped insulation plate extends in the direction away from the welding chamber, it drives the L-shaped pull plate to move synchronously, and the L-shaped pull plate drives the anti-skid wheel to slide synchronously along the inner wall of the U-shaped plate slide groove through the friction force. 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 resistance plate, and the resistance plate will move upward along the inside of the U-shaped plate under the guidance of the arc surface of the convex panel. The resistance plate drives the flat plate to move synchronously, and the flat plate drives the hollow column to break away from the contact with the top of the U-shaped plate. When the arc surface of the convex panel passes the resistance plate, the resistance plate no longer stretches the spring, and the spring is quickly reset from the stored force state and drives the hollow column to violently knock the top of the U-shaped plate to generate vibration, and so on.

[0013] According to the above technical scheme, the anti-hoarding device also includes a reciprocating screw, a U-shaped slide and a wave plate, both ends of the reciprocating screw are fixedly mounted on the side of the anti-skid wheel close to the center of the L-shaped pull plate, the U-shaped slide passes through the inside and is movably mounted on the outer wall of the reciprocating screw, the end of the U-shaped slide away from the inner wall of the U-shaped plate is slidably mounted on the inner wall of the L-shaped pull plate, and the end of the wave plate away from the inner wall of the U-shaped plate is fixedly mounted on the outer wall of the U-shaped slide, the anti-skid wheel drives the reciprocating screw to rotate when it rotates, and the reciprocating spiral groove on its outer wall limits the built-in block of the U-shaped slide when the reciprocating screw rotates, so that the reciprocating screw drives the U-shaped slide to slide reciprocatingly longitudinally along the inner wall of the L-shaped pull plate, and the U-shaped slide drives the wave plate to move synchronously.

[0014] The present invention provides a flange welding device for flange pipe production, which has the following beneficial effects: (1) The present invention sets an anti-scratch device, and cooperates with an electric push rod, a curved surface block, a curved clamping plate, a rubber pad, a slide rail, a vertical rod, a friction roller and a soft brush plate to enable the curved clamping plate to adaptively clamp flanges of different sizes during the process of clamping the flange. At the same time, the friction force of the outer wall of the rubber pad effectively improves the clamping tightness of the curved clamping plate on the flange, thereby ensuring the stability of the flange during welding, and reducing the participation of staff, thereby simplifying the welding preparation process and improving the practicality of the equipment; and relying on the vertical rod to realize the soft brush plate to brush the outer walls of flanges of different sizes, thereby preventing particulate impurities from adhering to the outer wall of the flange, resulting in the outer wall of the flange being pushed to scratch the particulate matter during the clamping process of the curved clamping plate, thereby causing appearance defects, and at the same time avoiding the arc clamping plate from being unable to fully adhere to the outer wall of the flange due to the obstruction of particulate matter, thereby leaving a gap, thereby preventing the clamping stability from being reduced to a certain extent.

[0015] (2) The present invention adopts the arrangement of an anti-corrosion device, and cooperates with an arc block, a U-shaped plate, a cross bar, a bent baffle plate, a heating assembly, a transmission plate, a sliding column, an inclined plate, an L-shaped insulation plate and a connecting plate. The U-shaped plate effectively expands the heat distribution range of the heating assembly to ensure uniform preheating inside the welding chamber. At the same time, the bent baffle plate shields the welding port of the welding assembly when not in use to prevent the welding port of the welding assembly from being attached to external dirt when it is stationary, thereby preventing the welding assembly from welding the flange and causing the flatness of the weld to be reduced due to the influence of dirt, thereby reducing the welding quality. At the same time, the transmission plate is used to adjust the position of the heating assembly to prevent the welding assembly from cold-starting the flange to weld, which increases the probability of cold cracks at the welding site. At the same time, the L-shaped insulation plate covers the welding area to shield welding sparks and reduce the heat loss rate, thereby ensuring that the temperature of the welding area is always balanced to avoid stress concentration.

[0016] (3) The present invention sets an anti-accumulation device, and cooperates with an L-shaped insulation board, an L-shaped pull plate, an anti-skid wheel, a convex panel, a contact plate, a flat plate, a hollow column, a reciprocating screw, a U-shaped slide plate and a wave plate. The L-shaped pull plate is used to shield the corner of the L-shaped insulation board, so as to avoid long-term radiation of the connection between the L-shaped insulation board and the inside of the U-shaped board during heat spread and distribution, and to avoid the surface damage caused by the accelerated oxidation rate of the connection between the L-shaped insulation board due to long-term and reciprocating heating and cooling. At the same time, the vibration force is used to improve the smoothness of the extension and contraction of the L-shaped insulation board to avoid jamming; at the same time, the arc surface guidance of the wave plate is used to achieve the circulation speed of the air flow adjacent to the U-shaped board and the L-shaped insulation board during the clamping and resetting process of the arc clamping plate, so as to avoid the internal inert gas from being accumulated in the welding chamber for a long time after the processing is completed, resulting in a decrease in the oxygen content in the welding chamber, resulting in insufficient oxide film formation during welding, thereby reducing the filling effect of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the present invention as a whole; Figure 2 It is a cross-sectional schematic diagram of the present invention as a whole; Figure 3 It is a schematic diagram of the anti-scratch device of the present invention; Figure 4 It is a schematic diagram of an enlarged portion of the structure of the anti-scratch device of the present invention; Figure 5 It is a schematic diagram of the anti-corrosion device of the present invention; Figure 6 It is a schematic diagram of the anti-corrosion device of the present invention from the right side perspective; Figure 7 It is a schematic diagram of the anti-hoarding device of the present invention; Figure 8 It is a schematic diagram of the anti-hoarding device of the present invention from the left side perspective.

[0018] In the figure: 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 clamping plate; 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. cross bar; 53. bending baffle; 54. heating assembly; 55. transmission plate; 56. sliding column; 57. inclined plate; 58. L-shaped insulation plate; 59. connecting plate; 6. anti-hoarding device; 61. L-shaped pull plate; 62. anti-skid wheel; 63. convex panel; 64. resistance plate; 65. flat plate; 66. hollow column; 67. reciprocating screw rod; 68. U-shaped slide plate; 69. wave plate. DETAILED DESCRIPTION

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

[0020] See also Figure 1-Figure 8 One embodiment of the present invention is: a flange welding device for flange pipe production, comprising a base 1, a welding chamber 2 is arranged on the top of the base 1, a driving assembly 21 is arranged on the left side of the welding chamber 2, a workbench 22 is arranged at the center of the top of the base 1, and a positioning groove is opened on the top of the workbench 22, an electric telescopic rod 3 is arranged at the center of the top of the inner wall of the welding chamber 2, and a welding assembly 31 is arranged at the bottom of the telescopic end of the electric telescopic rod 3; The inside of the welding chamber 2 is symmetrically provided with an anti-scratch device 4, the top of the anti-scratch device 4 is provided with an anti-corrosion device 5, and the inside of the anti-corrosion device 5 is provided with an anti-hoarding device 6; The anti-scratch device 4 includes two electric push rods 41, which are symmetrical and fixedly installed on the inner wall of the welding chamber 2. A curved block 42 is fixedly installed on the telescopic end of the electric push rod 41 close to the workbench 22. A curved splint 43 is hinged on the side of the curved block 42 away from the axis of the workbench 22. A rubber pad 44 is fixedly installed on the side of the curved splint 43 close to the axis of the workbench 22. A plurality of slide rails 45 are symmetrically and fixedly installed on the inner wall of the U-shaped groove of the curved splint 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. A plurality of soft brush plates 48 are fixedly installed at equal distances on the friction roller 47 close to the middle of the vertical rod 46.

[0021] A torsion spring is arranged between the arc block 42 and the arc clamping plate 43, and a U-shaped groove is opened at one end of the arc clamping plate 43 near the workbench 22. Springs are arranged between the two ends of the vertical rod 46 and the inside of the slide rail 45, and the outer walls of the two ends of the vertical rod 46 pass through the friction rollers 47. Through the above cooperation, the arc clamping plate 43 can adaptively clamp flanges of different sizes in the process of clamping the flange. At the same time, the friction force of the outer wall of the rubber pad 44 effectively improves the clamping tightness of the arc clamping plate 43 on the flange, ensures the stability of the flange welding process, reduces the participation of staff, simplifies the welding preparation process, and improves the practicality of the equipment; through the above cooperation, the vertical rod 46 is relied on to realize the soft brush plate 48 to brush the outer walls of flanges of different sizes, prevents the outer wall of the flange from being attached with granular impurities, and causes the granular matter to scratch the outer wall of the flange during the clamping process of the arc clamping plate 43, thereby causing appearance defects, and at the same time avoids the arc clamping plate 43 from being unable to fully adhere to the outer wall of the flange due to the obstruction of granular matter, thereby leaving a gap, and to a certain extent prevents the clamping stability from being reduced.

[0022] When in use, place the flange to be welded inside the positioning groove of the workbench 22, start the electric push rod 41, and the telescopic end of the electric push rod 41 drives the arc block 42 to move toward the center of the welding chamber 2, and the arc block 42 drives the arc clamping plate 43 to move synchronously, and the arc clamping plate 43 drives the rubber pad 44 to move synchronously. When the arc surfaces of the arc clamping plates 43 on both sides synchronously contact the arc surface of the outer wall of the flange, a resistance force is generated. As the arc clamping plates 43 continue to move, the resistance force is continuously amplified. At this time, the hinge shaft between the arc clamping plate 43 and the arc block 42 begins to rotate to different degrees according to the size of the resistance force. When the arc clamping plate 43 When the hinge shaft rotates, the arc clamping plate 43 is driven to move in an arc trajectory away from the axis of the workbench 22, and the arc clamping plate 43 drives the rubber pad 44 to move synchronously. When the arc clamping plate 43 is clamped, the welding assembly 31 moves downward through the telescopic end of the electric telescopic rod 3 and welds the flange. Through the above cooperation, the arc clamping plate 43 can adaptively clamp flanges of different sizes during the clamping process of the flange. At the same time, the friction force of the outer wall of the rubber pad 44 effectively improves the clamping tightness of the arc clamping plate 43 to the flange, thereby ensuring the stability of the flange welding process and reducing the involvement of staff. The welding preparation process is simplified and the practicality of the equipment is improved. When the arc-shaped clamping plate 43 moves toward the center of the welding chamber 2, it drives the slide rail 45 to move synchronously, and the slide rail 45 drives the vertical rod 46 to move synchronously. When the vertical rod 46 drives the friction roller 47 to contact the outer wall of the flange of different sizes, a resistance force and a friction force will be generated. When a resistance force is generated between the friction roller 47 and the outer wall of the flange, the vertical rod 46 is forced synchronously, and then the vertical rod 46 is caused to slide along the inside of the slide rail 45 for azimuth adjustment. The spring between the vertical rod 46 and the inside of the slide rail 45 is set to cause the outer wall of the friction roller 47 to always be close to the outer wall of the flange. After the friction roller 47 generates friction with the outer wall of the flange during movement, it starts to rotate along the inner wall of the U-shaped groove of the arc-shaped clamping plate 43, and the friction roller 47 drives the soft brush plate 48 to rotate along the outer wall of the flange. Through the above cooperation, the vertical rod 46 is used to realize the soft brush plate 48 to brush the outer walls of flanges of different sizes, thereby preventing particulate impurities from adhering to the outer wall of the flange, causing the particles to scratch the outer wall of the flange during the clamping process of the arc-shaped clamping plate 43, thereby causing 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 particles, thereby leaving a gap, thereby preventing the clamping stability from being reduced to a certain extent.

[0023] See also Figure 1-Figure 8 , based on the above embodiment, another embodiment of the present invention further includes an anti-corrosion device 5; The anti-corrosion device 5 includes two U-shaped plates 51, a cross bar 52, a bent baffle 53 and a heating assembly 54. The bottoms of the two U-shaped plates 51 are symmetrical and fixedly mounted on the top of the arc block 42. Both ends of the cross bar 52 are fixedly mounted inside the square groove of the left end U-shaped plate 51. The bent baffle 53 passes through the inside and is fixedly mounted on the outer wall of the cross bar 52. The left side of the heating assembly 54 is fixedly mounted on the left side of the inner wall of the left end U-shaped plate 51.

[0024] A square groove is provided on the top of the U-shaped plate 51, 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 is relied on to effectively expand the heat distribution range of the heating assembly 54 to ensure uniform preheating inside the welding chamber 2. At the same time, the bent baffle 53 shields the welding port of the welding assembly 31 when not in use, thereby preventing the welding port of the welding assembly 31 from being attached to external dirt when it is stationary, and preventing the welding assembly 31 from welding the flange plate due to the influence of dirt, thereby preventing the flatness of the weld from being reduced, thereby reducing the welding quality.

[0025] 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 component 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 at the left end. The top of the outer wall of the sliding column 56 contacts the bottom of the heating component 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 passed through the end near the axis of the welding chamber 2 through a spring and is slidably installed inside the U-shaped plate 51. The L-shaped insulation plate 58 is hinged on the bottom of the inclined plate 57 near the axis of the welding chamber 2, and 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. Through the above cooperation, the transmission plate 55 is used to adjust the position of the heating component 54 to avoid an 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, blocks welding sparks and reduces the heat loss rate, ensuring that the temperature in the welding area is always balanced to avoid stress concentration.

[0026] When in use, the arc block 42 moves toward the center of the welding chamber 2, driving the U-shaped plate 51 to move synchronously, the U-shaped plate 51 drives the cross bar 52 to move synchronously, and the cross bar 52 drives the bending baffle 53 to move synchronously. The bottom of the inner wall of the bending baffle 53 releases the shielding of the welding port at the bottom of the welding assembly 31. At the same time, the heating assembly 54 is pre-started during the welding preparation work, and the inside of the welding chamber 2 is preheated by the heating assembly 54. In addition, the movement range of the heating assembly 54 will be expanded during the movement of the U-shaped plate 51. The U-shaped plate 51 is used to effectively expand the heat distribution range of the heating component 54, so as to ensure uniform preheating inside the welding chamber 2. At the same time, the bending baffle plate 53 shields the welding port of the welding component 31 when not in use, so as to prevent the welding port of the welding component 31 from being attached by external dirt when it is stationary, and to prevent the welding component 31 from welding the flange plate with dirt, thereby reducing the flatness of the weld and reducing the welding quality. When the heating component 54 moves toward the center of the welding chamber 2, it drives the transmission plate 55 to move synchronously, and the top of the transmission plate 55 is The outer wall of the fixed end of the electric telescopic rod 3 is limited, which 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. The heating component 54 performs a 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, the inclined plate 57 is driven to move synchronously. The bottom of the inclined plate 57 is restricted by the L-shaped insulation plate 58, which causes its own hinge shaft to start rotating. The inclined plate 57 takes the hinge shaft as the axis. The center pushes the L-shaped insulation plate 58 to extend away from the axial direction of the welding chamber 2, and the left end L-shaped insulation plate 58 pulls the right end L-shaped insulation plate 58 to extend synchronously through the connecting plate 59. Through the above cooperation, the position of the heating component 54 is adjusted by relying on the transmission plate 55 to avoid the increase in the 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, blocks the welding sparks and reduces the heat loss rate, ensuring that the temperature in the welding area is always balanced to avoid stress concentration.

[0027] See also Figure 1-Figure 8 , based on the above embodiment, another embodiment of the present invention further includes an anti-hoarding device 6; The anti-hoarding device 6 includes an L-shaped pull plate 61, a plurality of anti-skid 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 away from the axis of the welding chamber 2. The plurality of anti-skid wheels 62 are symmetrically and rotatably installed on the inner wall of the slide 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 close to the U-shaped plate 51. The outer wall of the contact plate 64 is penetrated by a spring and slidably installed on the inner edge of the U-shaped plate 51. 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.

[0028] The L-shaped pull plate 61 is provided with a sliding groove on one side close to 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 resistance plate 64 is located on the movement trajectory of the convex panel 63, and 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 is relied on to shield the curved corners of the L-shaped insulation plate 58 to avoid long-term radiation of the connection between the L-shaped insulation plate 58 and the inside of the U-shaped plate 51 during heat spread and distribution, and to avoid the L-shaped insulation plate 58 connection The connection speed is accelerated due to cooling after long-term and reciprocating heating, thereby causing damage to the surface. At the same time, the vibration force is relied on to improve the smoothness of the extension and contraction of the L-shaped insulation plate 58 to avoid jamming.

[0029] The anti-hoarding device 6 also includes a reciprocating screw rod 67, a U-shaped slide plate 68 and a wave plate 69. Both ends of the reciprocating screw rod 67 are fixedly installed on one side of the anti-skid wheel 62 near the center of the L-shaped pull plate 61. The U-shaped slide plate 68 penetrates inside and is movably installed on the outer wall of the reciprocating screw rod 67. The end of the U-shaped slide 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, and 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 slide plate 68. Through the above coordination and relying on the arc surface guidance of the wave plate 69, the arc clamping plate 43 is clamped and reset. The flow speed of the internal airflow adjacent to the U-shaped plate 51 and the L-shaped insulation plate 58 is achieved, thereby preventing the internal inert gas from being stored in the welding chamber 2 for a long time after the processing is completed, resulting in a decrease in the oxygen content in the welding chamber 2, resulting in insufficient oxide film formation during welding, thereby reducing the filling effect of welding.

[0030] When in use, the L-shaped insulation plate 58 drives the L-shaped pull plate 61 to move synchronously when it extends away from the welding chamber 2. The L-shaped pull plate 61 drives the anti-skid wheel 62 to slide and rub synchronously along the inner wall of the U-shaped plate 51. The anti-skid wheel 62 starts to rotate along the inner wall of the slide groove of the L-shaped pull plate 61 through the friction force. At the same time, the L-shaped pull plate 61 drives the convex panel 63 to move synchronously. During the movement of the convex panel 63, its own arc surface will contact the arc surface of the resistance plate 64. Under the guidance of the arc surface of the convex panel 63, the resistance 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, and the flat plate 65 drives the hollow column 66 to break away from the contact with the top of the U-shaped plate 51. When the arc surface of the convex panel 63 passes the contact plate 64, the contact plate 64 no longer stretches the spring, and the spring quickly resets from the stored force state and drives the hollow column 66 to violently hit the top of the U-shaped plate 51 to vibrate, and so on. The L-shaped insulation plate 58 is extended with the vibration force through the transmission of force. Through the above cooperation, the L-shaped pull plate 61 is used to block the corner of the L-shaped insulation plate 58 to avoid The heat diffusion distribution prevents the connection between the L-shaped insulation board 58 and the U-shaped board 51 from being radiated for a long time, thereby preventing the connection between the L-shaped insulation board 58 from being damaged due to the accelerated oxidation rate after long-term and reciprocating heating and cooling. At the same time, the vibration force is relied on to improve the smoothness of the extension and contraction of the L-shaped insulation board 58 to avoid jamming. When the anti-skid wheel 62 rotates, it drives the reciprocating screw rod 67 to rotate. When the reciprocating screw rod 67 rotates, the reciprocating spiral groove on its outer wall restricts the built-in block of the U-shaped slide plate 68, prompting the reciprocating screw rod 67 to drive the U-shaped slide plate The plate 68 slides back and forth longitudinally along the inner wall of the L-shaped pull plate 61, and the U-shaped slide plate 68 drives the wave plate 69 to move synchronously. Through the above cooperation and relying on the arc surface guidance of the wave plate 69, the arc clamping plate 43 can control the circulation speed of the internal airflow adjacent to the U-shaped plate 51 and the L-shaped insulation plate 58 during the clamping and resetting process, thereby preventing the internal inert gas from being accumulated in the welding chamber 2 for a long time after the processing is completed, resulting in a decrease in the oxygen content in the welding chamber 2, causing insufficient oxide film formation during welding, thereby reducing the filling effect of the welding.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flange welding device for flange pipe production, comprising a base (1), characterized in that: A welding chamber (2) is arranged at the top of the base (1), a driving assembly (21) is arranged on the left side of the welding chamber (2), a workbench (22) is arranged at the center of the top of the base (1), and a positioning groove is opened at the top of the workbench (22), an electric telescopic rod (3) is arranged at the center of the top of the inner wall of the welding chamber (2), and a welding assembly (31) is arranged at the bottom of the telescopic end of the electric telescopic rod (3); The welding chamber (2) is symmetrically provided with an anti-scratch device (4), the top of the anti-scratch device (4) is provided with an anti-corrosion device (5), and the inside of the anti-corrosion device (5) is provided with an anti-accumulation device (6); The anti-scratch device (4) comprises two electric push rods (41), the two electric push rods (41) are symmetrically and fixedly mounted on the inner wall of the welding chamber (2), a curved block (42) is fixedly mounted on the telescopic end of the electric push rod (41) close to the workbench (22), a curved clamping plate (43) is hingedly connected to the curved block (42) on the side away from the axis of the workbench (22), a rubber pad (44) is fixedly mounted on the side of the curved clamping plate (43) close to the axis of the workbench (22), a plurality of slide rails (45) are symmetrically and fixedly mounted on the inner wall of the U-shaped groove of the curved clamping plate (43), a vertical rod (46) is slidably mounted inside the slide rail (45), friction rollers (47) are symmetrically and rotatably mounted on the outer walls of both ends of the vertical rod (46), and a plurality of soft brush plates (48) are fixedly mounted on the friction roller (47) at equal distances on the side close to the middle of the vertical rod (46).

2. A flange welding device for flange pipe production according to claim 1, characterized in that: A torsion spring is provided between the arc surface block (42) and the arc clamping plate (43); a U-shaped groove is provided at one end of the arc clamping plate (43) close to the workbench (22); springs are provided between the two ends of the vertical rod (46) and the inside of the slide rail (45); and the outer walls of the two ends of the vertical rod (46) penetrate the friction roller (47).

3. A flange welding device for flange pipe production according to claim 2, characterized in that: The anti-corrosion device (5) comprises two U-shaped plates (51), a cross bar (52), a bent baffle plate (53) and a heating assembly (54); the bottoms of the two U-shaped plates (51) are symmetrical and fixedly mounted on the top of the arc block (42); both ends of the cross bar (52) are fixedly mounted inside a square groove of the left end U-shaped plate (51); the bent baffle plate (53) penetrates inside and is fixedly mounted on the outer wall of the cross bar (52); and the left side of the heating assembly (54) is fixedly mounted on the left side of the inner wall of the left end U-shaped plate (51).

4. A flange welding device for flange pipe production according to claim 3, characterized in that: A square groove is formed at the top of the U-shaped plate (51); the top of the bent baffle plate (53) is slidably mounted on the top of the inner wall of the welding chamber (2); and the bottom of the inner wall of the bent baffle plate (53) contacts the bottom of the welding assembly (31).

5. A flange welding device for flange pipe production according to claim 4, characterized in that: The anti-corrosion device (5) further comprises a transmission plate (55), a sliding column (56), an inclined plate (57), an L-shaped insulation plate (58) and a connecting plate (59), wherein the transmission plate (55) is hinged between the right side of the heating component (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 mounted on the left side of the inner wall of the U-shaped plate (51) at the left end, the top of the outer wall of the sliding column (56) contacts the bottom of the heating component (54), the top of the inclined plate (57) is hinged to the bottom of the outer wall of the sliding column (56), one end of the L-shaped insulation plate (58) close to the axis of the welding chamber (2) is penetrated by a spring and slidably mounted inside the U-shaped plate (51), the side of the L-shaped insulation plate (58) close to the axis of the welding chamber (2) is hinged to the bottom of the inclined plate (57), and both sides of the connecting plate (59) are fixedly mounted on the side of the L-shaped insulation plate (58) close to the center of the welding chamber (2).

6. A flange welding device for flange pipe production according to claim 5, characterized in that: The anti-hoarding device (6) comprises an L-shaped pull plate (61), a plurality of anti-skid 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 mounted on the inner wall of the L-shaped insulation plate (58) at a side away from the axis of the welding chamber (2); the plurality of anti-skid wheels (62) are symmetrically and rotatably mounted on the inner wall of the slide groove of the L-shaped pull plate (61); the convex panel (63) is fixedly mounted on the outer wall of the L-shaped pull plate (61) at a side close to the U-shaped plate (51); the outer wall of the contact plate (64) is penetrated by a spring and slidably mounted on the inner edge of the U-shaped plate (51); the bottom of the flat plate (65) is fixedly mounted on the top of the contact plate (64); and the top of the hollow column (66) is fixedly mounted on the bottom of the flat plate (65).

7. A flange welding device for flange pipe production according to claim 6, characterized in that: A sliding groove is provided on one side of the L-shaped pull plate (61) close to 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 resistance plate (64) is located on the movement track of the convex plate (63); and the bottom of the hollow column (66) contacts the top of the U-shaped plate (51).

8. A flange welding device for flange pipe production according to claim 7, characterized in that: The anti-hoarding device (6) further comprises a reciprocating screw rod (67), a U-shaped slide plate (68) and a wave plate (69), both ends of the reciprocating screw rod (67) being fixedly mounted on one side of the anti-slip wheel (62) close to the center of the L-shaped pull plate (61), the U-shaped slide plate (68) passing through the inside and being movably mounted on the outer wall of the reciprocating screw rod (67), one end of the U-shaped slide plate (68) away from the inner wall of the U-shaped plate (51) being slidably mounted on the inner wall of the L-shaped pull plate (61), and one end of the wave plate (69) away from the inner wall of the U-shaped plate (51) being fixedly mounted on the outer wall of the U-shaped slide plate (68).

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