Milling machine for double-sided machining of pipeline flange end plate

Abstract

The invention relates to the technical field of milling machining, and discloses a pipeline flange end plate double-face machining milling machine which comprises a main machine, a support is fixed to one side of the main machine, a flange clamp, a flange conveying assembly and a flange driving assembly are arranged on the main machine, and an adjusting assembly and two milling assemblies are arranged on the support. By arranging the flange clamp, the flange conveying assembly, the flange driving assembly, the adjusting assembly and the two milling assemblies, the two milling assemblies can be moved to the top and the bottom of a flange welding point firstly and then moved to the inner side and the outer side of the flange welding point through the adjusting assembly; compared with existing equipment, the machining quality and the machining efficiency are improved, the flange can be controlled to rotate in a reciprocating mode through the flange driving assembly when the inner edge and the outer edge of the flange are machined, and the machining effect of the inner edge and the outer edge of a flange welding point is improved.

Description

Technical Field

[0001] This invention relates to the field of milling technology, specifically to a milling machine for double-sided machining of pipe flange end plates. Background Technology

[0002] Pipe flanges are mainly used to fix the ends of pipes for installation and connection. While most flanges are forged, forging is difficult for larger diameter flanges, so rolling is generally used. Rolled flanges are made by cutting strips from a medium plate, rolling them into circles, welding the joints, and then flattening them. The weld seam at the joint of the rolled flange needs to be milled to make it smooth. In addition to the weld seam treatment, subsequent operations such as rust removal, grinding, and drilling are required on the flange surface. Currently, weld seam treatment is generally done manually, but to improve processing efficiency, automated milling equipment suitable for processing the vertical plates of rolled flanges has emerged.

[0003] Chinese patent application CN109604686A discloses a double-sided milling machine for vertical plates of pipe pile flanges. This equipment, by setting up an upper milling device and a lower milling device, can simultaneously process the welding joints on the upper and lower surfaces of the flange, thereby improving processing efficiency. However, it has certain shortcomings: large rolled flanges have a certain thickness, and in addition to the top and bottom surfaces of the welding points, the inner and outer sides of the welding points also need to be processed. This equipment lacks processing functions applicable to the inner and outer sides of the flange welding points, so further processing is still required, which delays the overall production efficiency.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a double-sided milling machine for pipeline flange end plates, which has advantages such as high processing efficiency and good applicability. It solves the problem that existing milling equipment for pipeline flange weld seams can only process the upper and lower surfaces of the flange, lacking the function of processing the inner and outer sides, requiring subsequent secondary processing, which affects the processing efficiency of the flange.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a double-sided milling machine for pipeline flange end plates, including a main machine, a bracket fixed on one side of the main machine, a flange clamp, a flange conveying assembly and a flange driving assembly provided on the main machine, and an adjustment assembly and two sets of milling assemblies provided on the bracket; The flange conveying assembly is mounted on top of the main unit and includes a movable slide. The flange conveying assembly is used to convey the flange between two sets of milling assemblies. The flange clamp is mounted on the slide block and is used to fix the flange. The flange drive assembly is mounted on the slide block and is used to drive the flange to reciprocate and swing. The adjustment assembly is mounted on the bracket, and the adjustment assembly includes a U-shaped seat. The adjustment assembly is used to adjust the position of the two sets of milling assemblies. Both sets of the milling assemblies are mounted on U-shaped seats, and the milling assemblies are used for machining flanges; The flange clamping mechanism fixes the flange in place. When the flange conveying assembly operates, the slide moves, forcing the flange on the flange clamping mechanism to move between the two sets of milling assemblies. The adjustment component operates and drives the milling component to move in the same direction. At the same time, the milling component operates to mill the top and bottom surfaces of the flange welding point simultaneously. The adjustment component operates and drives the milling component to move in opposite directions, causing the two sets of milling components to be staggered. The flange drive component operates, causing the flange to reciprocate. At the same time, the milling component operates, simultaneously milling the inner and outer edges of the flange welding point.

[0007] Preferably, the flange conveying assembly includes a guide rail, the slide block is slidably connected to the guide rail, a base plate and a first bearing seat are fixed on the top of the guide rail, a screw is provided on the top of the guide rail, the screw is threadedly connected to the slide block, the two ends of the screw are respectively rotatably connected to the base plate and the first bearing seat, a first motor is fixed on the base plate, and the output shaft of the first motor is fixed to the screw.

[0008] Preferably, the flange clamp includes a pipe seat, which is rotatably connected to a slide block. A first gear is fixed to the outer wall of the pipe seat, and a plurality of first slide rails arranged in a circular array are fixed to the side wall of the pipe seat. A strip-shaped slider is slidably connected to the first slide rails. An electric chuck is fixed to the center of the pipe seat, and a plurality of jaws are provided on the electric chuck. The jaws are fixedly connected to one end of the strip-shaped slider.

[0009] Preferably, the flange drive assembly includes a second motor, which is fixedly connected to the slide block. A turntable is fixed to the output shaft of the second motor. A connecting rod is provided on the edge of the turntable. One end of the connecting rod is rotatably connected to the edge of the turntable, and the other end of the connecting rod is rotatably connected to a first rack. The first rack is slidably connected to the surface of the slide block and meshes with a first gear.

[0010] Preferably, the adjustment assembly further includes a second slide rail, which is fixed to the inner wall of the bracket. A vertical plate is fixed to the end of the second slide rail, and a first cylinder is fixed to one side of the vertical plate. A movable frame is fixed to the output shaft of the first cylinder. The movable frame is slidably connected to the second slide rail and fixedly connected to the U-shaped seat. A third slide rail is fixed to both the top and bottom of the U-shaped seat.

[0011] Preferably, the milling assembly includes a transmission slider, which is slidably connected to a third slide rail. A mounting base is fixedly connected to one side of the transmission slider, and a second cylinder is fixedly mounted on the mounting base. A motor frame is fixedly mounted on the output shaft of the second cylinder, and a third motor is fixedly mounted inside the motor frame. A cutting tool is fixedly connected to the output shaft of the third motor.

[0012] Preferably, the adjusting assembly further includes a second bearing seat, which is fixedly connected to a U-shaped seat. A rotating shaft is rotatably connected to the second bearing seat. A drive rod is fixed to one end of the rotating shaft. Both ends of the drive rod have slotted holes. Short pins are inserted into both slotted holes. A push rod is fixed to one end of each short pin. One end of the push rod is fixedly connected to a transmission slider.

[0013] Preferably, a second gear is fixedly connected to the end of the rotating shaft away from the drive rod, a third cylinder is fixedly connected to one side of the U-shaped seat, a second rack is fixed to the output shaft of the third cylinder, the second rack is slidably connected to the side wall of the U-shaped seat, and the second rack meshes with the second gear.

[0014] Preferably, a locking block is fixed to the end of the strip-shaped slider, a groove is formed on the surface of the locking block, a top plate is provided on the top of the locking block, a ball is movably connected to the top of the top plate, a guide rod is fixed to the bottom of the top plate, the guide rod is movably inserted into the locking block, a spring is sleeved on the outside of the guide rod, the two ends of the spring are fixedly connected to the top plate and the locking block respectively, a base shaft is rotatably connected in the groove, a cam and a worm gear are fixed on the base shaft, a fourth motor is fixed to the side wall of the locking block, a worm is fixed to the output shaft of the fourth motor, both ends of the worm are rotatably connected to the inner wall of the groove, and the worm meshes with the worm gear.

[0015] Compared with the prior art, the present invention provides a double-sided milling machine for pipeline flange end plates, which has the following advantages: 1. This type of double-sided milling machine for pipeline flange end plates, by setting up flange clamps, flange conveying components, flange drive components, adjustment components, and two sets of milling components, utilizes the adjustment components to allow the two sets of milling components to first move to the top and bottom of the flange welding point, and then to the inner and outer sides of the flange welding point, which is conducive to performing grinding processing on all four sides of the weld in one go without dead angles. Compared with existing equipment, it improves processing quality and processing efficiency. The flange drive components can control the reciprocating rotation of the flange when processing the inner and outer edges of the flange, improving the processing effect of the inner and outer edges of the flange welding point.

[0016] 2. This type of double-sided milling machine for pipeline flange end plates can adjust the position of the cutting tool by adjusting the adjustment components and milling components, and can adapt to rolled flanges of different thicknesses and diameters, with high processing applicability.

[0017] 3. This type of pipeline flange end plate double-sided milling machine, by setting a movable top plate and ball bearings on the flange fixture, uses a fourth motor to drive the top plate to move up and support the flange. The ball bearings reduce the friction at the bottom of the flange, making it easy to adjust the flange angle. This is beneficial for adjusting the position of the welding point before processing the welding point, thereby achieving positioning, and the operation is labor-saving. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a milling machine for double-sided machining of pipe flange end plates according to the present invention; Figure 2 For the present invention Figure 1 Enlarged view of part A; Figure 3 This is a schematic diagram of the structure of the adjustment component of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of part B; Figure 5 For the present invention Figure 3 Enlarged view of part C; Figure 6 This is a schematic diagram of the drive rod of the present invention; Figure 7 This is a schematic diagram of the operation of the milling assembly of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the operation of the milling assembly of the present invention. Figure 2 ; Figure 9 This is a partial cross-sectional view of the first slide rail of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of part D.

[0019] In the diagram: 1. Main unit; 2. Bracket; 3. Flange clamp; 31. Pipe seat; 32. First gear; 33. First slide rail; 34. Strip slider; 35. Electric chuck; 36. Gripper; 301. Clamping block; 302. Groove; 303. Top plate; 304. Ball bearing; 305. Guide rod; 306. Spring; 307. Base shaft; 308. Cam; 309. Worm gear; 310. Fourth motor; 311. Worm; 4. Flange conveying assembly; 41. Slide; 42. Guide rail; 43. Base plate; 44. First bearing seat; 45. Screw; 46. First motor; 5. Flange drive assembly; 51. 52. Two motors; 53. Turntable; 54. Connecting rod; 55. First rack; 6. Adjustment assembly; 601. U-shaped seat; 602. Second slide rail; 603. Vertical plate; 604. First cylinder; 605. Movable frame; 606. Third slide rail; 607. Second bearing seat; 608. Rotating shaft; 609. Drive rod; 610. Strip hole; 611. Short pin; 612. Push rod; 613. Second gear; 614. Third cylinder; 615. Second rack; 7. Milling assembly; 71. Transmission slider; 72. Mounting base; 73. Second cylinder; 74. Motor frame; 75. Third motor; 76. Cutting tool. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, those skilled in the art who have not made any innovative embodiments are all within the scope of protection of the present invention.

[0021] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a double-sided milling machine for pipeline flange end plates.

[0022] Please see Figures 1-3 A double-sided milling machine for processing pipeline flange end plates includes a main unit 1, a bracket 2 fixed on one side of the main unit 1, a flange clamp 3, a flange conveying assembly 4 and a flange driving assembly 5 provided on the main unit 1, and an adjustment assembly 6 and two sets of milling assemblies 7 provided on the bracket 2. The flange conveying assembly 4 is mounted on top of the main unit 1. The flange conveying assembly 4 includes a movable slide 41. The flange conveying assembly 4 is used to convey the flange between the two sets of milling assemblies 7. The flange clamp 3 is mounted on the slide block 41, and the flange clamp 3 is used to fix the flange. The flange drive assembly 5 is mounted on the slide 41, and the flange drive assembly 5 is used to drive the flange to reciprocate and swing. The adjustment component 6 is mounted on the bracket 2. The adjustment component 6 includes a U-shaped seat 601. The adjustment component 6 is used to adjust the position of the two sets of milling components 7. Both sets of milling assemblies 7 are mounted on U-shaped seats, and the milling assemblies 7 are used for machining flanges; When the flange clamp 3 operates, it fixes the flange. When the flange conveying assembly 4 operates, the slide 41 moves, forcing the flange on the flange clamp 3 to move between the two sets of milling assemblies 7. The adjustment component 6 operates and drives the milling component 7 to move in the same direction. At the same time, the milling component 7 operates to mill the top and bottom surfaces of the flange welding point simultaneously. The adjusting component 6 operates and drives the milling component 7 to move in the opposite direction, causing the two sets of milling components 7 to be staggered. At the same time, the flange driving component 5 operates, causing the flange to reciprocate. Simultaneously, the milling component 7 operates, milling the inner and outer edges of the flange welding point at the same time.

[0023] Among them, the bracket 2 includes a horizontal top frame set obliquely above the host 1 and a side frame fixed to the edge of the top frame. The bottom end of the side frame is fixedly connected to the host 1. Before processing, the flange is placed horizontally on the flange clamp 3. In the initial state, the two sets of milling components 7 are symmetrically distributed vertically. In use, first place the flange on the flange clamp 3, adjust the angle of the flange so that the flange welding point faces the support 2, then start the flange clamp 3 to clamp and fix the flange, then start the flange conveying assembly 4. When the flange conveying assembly 4 is running, the slide 41 moves towards the support 2, which in turn drives the flange clamp 3 on the slide 41 and the flange on the flange clamp 3 to move towards the support 2 until the welding point on the flange moves between the two sets of cutting assemblies. Then start the adjusting assembly 6 and the two sets of cutting assemblies. At this time, the adjusting assembly 6 drives the two sets of cutting assemblies to move in the same direction to grind the top and bottom of the flange welding point. After the processing is completed, start the adjusting assembly 6 again. At this time, the adjusting assembly 6 drives the two sets of cutting assemblies to move in opposite directions, so that the positions of the two sets of cutting assemblies are staggered. The two sets of cutting assemblies move to the inside and outside of the flange welding point respectively. At the same time, the flange drive assembly 5 runs and drives the flange clamp 3 to swing back and forth, so that the flange swings back and forth, cooperating with the cutting assembly to grind the inside and outside of the welding point. By setting up a flange clamp 3, a flange conveying assembly 4, a flange drive assembly 5, an adjustment assembly 6, and two sets of milling assemblies 7, the adjustment assembly 6 enables the two sets of milling assemblies 7 to first move to the top and bottom of the flange welding point, and then to the inner and outer sides of the flange welding point. This facilitates grinding all four sides of the weld without dead angles in one go, improving processing quality and efficiency compared to existing equipment. The flange drive assembly 5 can control the reciprocating rotation of the flange when processing the inner and outer edges of the flange, improving the processing effect of the inner and outer edges of the flange welding point.

[0024] Further, see Figure 1 and Figure 7 The flange conveying assembly 4 includes a guide rail 42, a slide block 41 slidably connected to the guide rail 42, a base plate 43 and a first bearing seat 44 fixed on the top of the guide rail 42, a screw 45 provided on the top of the guide rail 42, the screw 45 being threadedly connected to the slide block 41, the two ends of the screw 45 being rotatably connected to the base plate 43 and the first bearing seat 44 respectively, a first motor 46 fixed on the base plate 43, the output shaft of the first motor 46 being fixed to the screw 45, the flange clamp 3 includes a pipe seat 31, the pipe seat 31 being rotatably connected to the slide block 41, a first gear 32 fixed on the outer wall of the pipe seat 31, a plurality of first slide rails 33 arranged in a ring array fixed on the side wall of the pipe seat 31, a strip slider 34 slidably connected on the first slide rail 33, an electric chuck 35 fixed at the center of the pipe seat 31, a plurality of grippers 36 provided on the electric chuck 35, and the grippers 36 being fixedly connected to one end of the strip slider 34; The screw 45 is rotatably connected to the base or the first bearing seat 44 at both ends via bearings, and the tube seat 31 is rotatably connected to the slide 41 via bearings. The first slide rail 33 is preferably set to three. When the flange is installed on the flange clamp 3, the welding point on the flange is exactly in the gap between the adjacent first slide rails 33, which facilitates processing. The electric chuck 35 and the jaws 36 are the same as the prior art. The jaws 36 are set to three and are fixed to the three strip sliders 34 respectively. In use, the flange is placed on the first slide rail 33. At this time, the three strip sliders 34 are all located inside the flange. Then, the electric chuck 35 is operated. The three jaws 36 on the electric chuck 35 move, which drives the three strip sliders 34 to move. When the three strip sliders 34 move, they press against the inside of the flange to fix the flange. Then, the first motor 46 is started. When the first motor 46 is running, it drives the screw 45 to rotate. When the screw 45 rotates, it drives the slide 41 to move along the guide rail 42. When the slide 41 moves, it drives the flange clamp 3 on the slide 41 and the fixed flange to move until the welding point on the flange moves between the two sets of milling components 7. By setting up the flange clamp 3 and the flange conveying assembly 4, it is beneficial to fix the flange and convey it to the processing position, which facilitates the subsequent processing of the flange. The flange clamp 3 is set with multiple sets of first slide rails 33, electric chucks 35 and strip sliders 34, which can adapt to the shape of the flange and have a good fixing effect. The gap between adjacent first slide rails 33 can avoid the welding points on the flange, which facilitates double-sided processing.

[0025] Further, see Figures 3-7The adjustment assembly 6 further includes a second slide rail 602, which is fixed to the inner wall of the bracket 2. A vertical plate 603 is fixed to the end of the second slide rail 602. A first cylinder 604 is fixed to one side of the vertical plate 603. A movable frame 605 is fixed to the output shaft of the first cylinder 604. The movable frame 605 is slidably connected to the second slide rail 602. The movable frame 605 is fixedly connected to the U-shaped seat 601. A third slide rail 606 is fixed to both the top and bottom of the U-shaped seat 601. The milling assembly 7 includes a transmission slider 71, which is slidably connected to the third slide rail 606. A mounting base 72 is fixedly connected to one side of the transmission slider 71. A second cylinder 73 is fixed to the mounting base 72. A motor frame 74 is fixed to the output shaft of the second cylinder 73. A third motor 75 is fixed inside the motor frame 74. A cutting tool 76 is fixedly connected to the output shaft of the third motor 75. The second slide rail 602 is parallel to the guide rail 42, the first cylinder 604 is horizontally set, the output shaft of the second cylinder 73 of the top milling assembly 7 is vertically downward, the output shaft of the second cylinder 73 of the bottom milling assembly 7 is vertically upward, and the cutting tool 76 is the same as the prior art and can be disassembled and replaced according to processing requirements. When in use, after the flange is moved to the processing position, two sets of third motors 75 and two sets of second cylinders 73 are started. When the third motor 75 is running, it drives the tool 76 to rotate. At the same time, the second cylinder 73 extends and drives the rotating tool 76 to move down to be flush with the top surface of the flange and the ground. Then the first cylinder 604 is started. When the first cylinder 604 is running, it extends and can push the movable frame 605 to slide along the second slide rail 602. When the movable frame 605 slides, it drives the U-shaped seat 601 to move and drives the two sets of milling components 7 on the U-shaped seat 601 to move, so that the rotating tool 76 moves along the surface of the flange welding point, and at the same time grinds the top and bottom surfaces of the welding point flat. By setting up the milling assembly 7 and the adjusting assembly 6, the first cylinder 604 and the second cylinder 73 are used to control the lateral and vertical movement of the cutting tool 76, thereby simultaneously grinding the top and bottom surfaces of the flange welding point, thus achieving efficient processing and adapting to flanges of different specifications, with high applicability.

[0026] Further, see Figures 5-8The adjusting assembly 6 further includes a second bearing seat 607, which is fixedly connected to a U-shaped seat 601. A rotating shaft 608 is rotatably connected to the second bearing seat 607. A drive rod 609 is fixed to one end of the rotating shaft 608. Both ends of the drive rod 609 have slotted holes 610, and short pins 611 are inserted into both slotted holes 610. A push rod 612 is fixed to one end of each short pin 611. One end of the push rod 612 is fixedly connected to a transmission slider 71. A second gear 613 is fixedly connected to the end of the rotating shaft 608 away from the drive rod 609. A third cylinder 614 is fixedly connected to one side of the U-shaped seat 601. The output shaft of the third cylinder 614 is fixed with a second rack 615, which is slidably connected to the side wall of the U-shaped seat 601. The second rack 615 meshes with a second gear 613. The flange drive assembly 5 includes a second motor 51, which is fixedly connected to a slide 41. The output shaft of the second motor 51 is fixed with a turntable 52. A connecting rod 53 is provided on the edge of the turntable 52. One end of the connecting rod 53 is rotatably connected to the edge of the turntable 52, and the other end of the connecting rod 53 is rotatably connected to a first rack 54. The first rack 54 is slidably connected to the surface of the slide 41 and meshes with a first gear 32. The rotating shaft 608 is fixed to the center of the drive rod 609. In the initial state, the drive rod 609 is tilted. The push rods 612 at both ends of the drive rod 609 have different lengths. The top push rod 612 is fixed to the transmission slider 71 of the top milling assembly 7, and the bottom push rod 612 is fixed to the transmission slider 71 of the bottom milling assembly 7. During use, after the grinding of the top and bottom surfaces of the flange welding point is completed, the third cylinder 614 is activated. The third cylinder 614 extends and pushes the second rack 615 to slide. When the second rack 615 moves, it pushes the second gear 613 to rotate. The rotation of the second gear 613 drives the rotating shaft 608 and the drive rod 609 to rotate. When the drive rod 609 rotates, it pushes the two short pins 611 to move through the slotted holes 610 at both ends. The two short pins 611 move in opposite directions. When the two short pins 611 move, they drive the transmission slider 71 to move through the push rod 612, causing the two milling components 7 to move in different directions. Finally, the positions of the two cutting tools 76 are staggered. At this time, the two cutting tools 76 Corresponding to the inner and outer edges of the flange welding point respectively, two sets of third motors 75 and second cylinders 73 are started at this time, which can grind the inner and outer edges of the flange welding point. At the same time, the second motor 51 on the slide 41 is also started. When the second motor 51 is running, it drives the turntable 52 to rotate. When the turntable 52 rotates, it drives the connecting rod 53 to move back and forth, which in turn pushes the first rack 54 to slide back and forth. The first rack 54 slides back and forth, which drives the first gear 32 to rotate back and forth. When the first gear 32 rotates back and forth, it drives the entire flange clamp 3 and the flange to rotate back and forth. When the flange rotates back and forth, the rotating tool 76 grinds the inner and outer edges of the flange within a certain angle range. By setting up an adjustment component 6, a milling component 7, and a flange drive component 5, the adjustment component 6 drives the two milling components 7 to move to positions corresponding to the inner and outer sides of the flange welding point. At the same time, the flange drive component 5 drives the flange to rotate back and forth, which improves the grinding effect and grinding quality of the inner and outer edges of the flange welding point. It can also adapt to flanges of different specifications and has high applicability.

[0027] Further, see Figures 9-10 The strip-shaped slider 34 has a locking block 301 fixed at its end. The locking block 301 has a groove 302 on its surface. The locking block 301 has a top plate 303 on its top. The top of the top plate 303 is movably connected to a ball bearing 304. The bottom of the top plate 303 has a guide rod 305 fixed. The guide rod 305 is movably inserted into the locking block 301. A spring 306 is sleeved on the outside of the guide rod 305. The two ends of the spring 306 are fixedly connected to the top plate 303 and the locking block 301, respectively. A base shaft 307 is rotatably connected in the groove 302. A cam 308 and a worm gear 309 are fixed on the base shaft 307. A fourth motor 310 is fixed on the side wall of the locking block 301. A worm gear 311 is fixed on the output shaft of the fourth motor 310. Both ends of the worm gear 311 are rotatably connected to the inner wall of the groove 302. The worm gear 311 meshes with the worm gear 309. In the initial state, the ball bearing 304 is located inside the first slide rail 33. During use, when the flange is placed on top of the first slide rail 33, the position of the welding point on the flange needs to be adjusted. At this time, the flange clamp 3 is started to fix the flange. Then, after the flange clamp 3 is rotated again, it drives multiple strip sliders 34 to retract and no longer fix the flange. At this time, the movement of the strip sliders 34 will also drive the locking block 301 to move to the bottom of the flange. Then, the fourth motor 310 is started. The fourth motor 310 can drive the worm gear 311 to rotate. The worm gear 311 drives the worm wheel 309, the base shaft 307 and the cam 308 to rotate. When the cam 308 rotates, it pushes the top plate 303 and the ball bearing 304 on the top plate 303 to move upward, which can lift the flange. At this time, the ball bearing 304 reduces the friction at the bottom of the flange, and the operator can manually adjust the angle of the flange. By setting a movable top plate 303 and ball bearings 304 on the flange clamp 3, the fourth motor 310 can drive the top plate 303 to move upward and support the flange. The ball bearings 304 reduce the friction at the bottom of the flange, making it easier to adjust the flange angle. This is beneficial for adjusting the position of the welding point before welding point processing, thereby achieving positioning and saving labor during operation.

[0028] Working principle: When in use, first place the flange on the flange clamp 3 and adjust the angle of the flange so that the flange welding point faces the bracket 2. At this time, the three strip sliders 34 are all located inside the flange. Then, the electric chuck 35 is operated. The three jaws 36 on the electric chuck 35 move, which drives the three strip sliders 34 to move. When the three strip sliders 34 move, they press against the inside of the flange to fix the flange. Then, the first motor 46 is started. When the first motor 46 runs, it drives the screw 45 to rotate. When the screw 45 rotates, it drives the slide 41 to move along the guide rail 42. When the slide 41 moves, it drives the flange clamp 3 on the slide 41 and the fixed flange to move until the welding point on the flange moves between the two sets of milling components 7. After the flange is moved to the processing position, two sets of third motors 75 and two sets of second cylinders 73 are started. When the third motor 75 is running, it drives the tool 76 to rotate. At the same time, the second cylinder 73 extends and drives the rotating tool 76 to move down to be flush with the top surface of the flange and the ground. Then the first cylinder 604 is started. When the first cylinder 604 is running, it extends and can push the movable frame 605 to slide along the second slide rail 602. When the movable frame 605 slides, it drives the U-shaped seat 601 to move and drives the two sets of milling components 7 on the U-shaped seat 601 to move, so that the rotating tool 76 moves along the surface of the flange welding point, and at the same time grinds the top and bottom surfaces of the welding point flat. After the grinding of the top and bottom surfaces of the flange welding point is completed, the third cylinder 614 is activated. The third cylinder 614 extends and pushes the second rack 615 to slide. When the second rack 615 moves, it pushes the second gear 613 to rotate. The rotation of the second gear 613 drives the rotating shaft 608 and the drive rod 609 to rotate. When the drive rod 609 rotates, it pushes the two short pins 611 to move through the strip holes 610 at both ends. The two short pins 611 move in opposite directions. When the two short pins 611 move, they drive the transmission slider 71 to move through the push rod 612, causing the two milling components 7 to move in different directions. Finally, the positions of the two cutting tools 76 are staggered. At this time, the two cutting tools 76 respectively... At the same time, the inner and outer edges of the flange welding point are ground. At this time, two sets of third motors 75 and second cylinders 73 are started to grind the inner and outer edges of the flange welding point. At the same time, the second motor 51 on the slide 41 is also started. When the second motor 51 is running, it drives the turntable 52 to rotate. When the turntable 52 rotates, it drives the connecting rod 53 to move back and forth, which in turn pushes the first rack 54 to slide back and forth. The first rack 54 slides back and forth, which drives the first gear 32 to rotate back and forth. When the first gear 32 rotates back and forth, it drives the entire flange clamp 3 and the flange to rotate back and forth. When the flange rotates back and forth, the rotating tool 76 grinds the inner and outer edges of the flange within a certain angle range. By setting up a flange clamp 3, a flange conveying assembly 4, a flange drive assembly 5, an adjustment assembly 6, and two sets of milling assemblies 7, the adjustment assembly 6 enables the two sets of milling assemblies 7 to first move to the top and bottom of the flange welding point, and then to the inner and outer sides of the flange welding point. This facilitates grinding all four sides of the weld without dead angles in one go, improving processing quality and efficiency compared to existing equipment. The flange drive assembly 5 can control the reciprocating rotation of the flange when processing the inner and outer edges of the flange, improving the processing effect of the inner and outer edges of the flange welding point.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-sided milling machine for machining pipeline flange end plates, comprising a main machine (1), characterized in that: The host (1) is fixed with a bracket (2) on one side. The host (1) is provided with a flange clamp (3), a flange conveying assembly (4) and a flange driving assembly (5). The bracket (2) is provided with an adjustment assembly (6) and two sets of milling assemblies (7). The flange conveying assembly (4) is mounted on top of the main unit (1). The flange conveying assembly (4) includes a movable slide (41) and is used to convey the flange between the two sets of milling assemblies (7). The flange clamp (3) is mounted on the slide (41) and is used to fix the flange. The flange drive assembly (5) is mounted on the slide (41) and is used to drive the flange to swing back and forth. The adjustment component (6) is mounted on the bracket (2), and the adjustment component (6) includes a U-shaped seat (601). The adjustment component (6) is used to adjust the position of the two sets of milling components (7). Both sets of the milling assemblies (7) are mounted on the U-shaped seat, and the milling assemblies (7) are used for machining flanges; The flange clamp (3) operates to fix the flange, and the slide (41) moves when the flange conveying assembly (4) operates, forcing the flange on the flange clamp (3) to move between the two sets of milling assemblies (7); The adjustment component (6) operates and drives the milling component (7) to move in the same direction. At the same time, the milling component (7) operates to mill the top and bottom surfaces of the flange welding point simultaneously. The adjustment component (6) operates and drives the milling component (7) to move in opposite directions, causing the two sets of milling components (7) to be staggered. The flange drive component (5) operates, causing the flange to rotate back and forth. At the same time, the milling component (7) operates, and mills the inner and outer edges of the flange welding point simultaneously.

2. The double-sided milling machine for pipe flange end plates according to claim 1, characterized in that: The flange conveying assembly (4) includes a guide rail (42), a slide block (41) is slidably connected to the guide rail (42), a base plate (43) and a first bearing seat (44) are fixed on the top of the guide rail (42), a screw (45) is provided on the top of the guide rail (42), the screw (45) is threadedly connected to the slide block (41), the two ends of the screw (45) are rotatably connected to the base plate (43) and the first bearing seat (44) respectively, a first motor (46) is fixed on the base plate (43), and the output shaft of the first motor (46) is fixed to the screw (45).

3. A double-sided milling machine for pipe flange end plates according to claim 2, characterized in that: The flange clamp (3) includes a pipe seat (31), which is rotatably connected to a slide (41). A first gear (32) is fixed on the outer wall of the pipe seat (31). A plurality of first slide rails (33) arranged in a ring array are fixed on the side wall of the pipe seat (31). A strip slider (34) is slidably connected on the first slide rail (33). An electric chuck (35) is fixed at the center of the pipe seat (31). A plurality of jaws (36) are provided on the electric chuck (35). The jaws (36) are fixedly connected to one end of the strip slider (34).

4. A double-sided milling machine for machining pipeline flange end plates according to claim 3, characterized in that: The flange drive assembly (5) includes a second motor (51), which is fixedly connected to the slide (41). The output shaft of the second motor (51) is fixed with a turntable (52). A connecting rod (53) is provided on the edge of the turntable (52). One end of the connecting rod (53) is rotatably connected to the edge of the turntable (52), and the other end of the connecting rod (53) is rotatably connected to a first rack (54). The first rack (54) is slidably connected to the surface of the slide (41), and the first rack (54) meshes with a first gear (32).

5. A double-sided milling machine for machining pipeline flange end plates according to claim 4, characterized in that: The adjustment assembly (6) further includes a second slide rail (602), which is fixed to the inner wall of the bracket (2). A vertical plate (603) is fixed to the end of the second slide rail (602). A first cylinder (604) is fixed to one side of the vertical plate (603). A movable frame (605) is fixed to the output shaft of the first cylinder (604). The movable frame (605) is slidably connected to the second slide rail (602). The movable frame (605) is fixedly connected to the U-shaped seat (601). A third slide rail (606) is fixed to both the top and bottom of the U-shaped seat (601).

6. A double-sided milling machine for machining pipeline flange end plates according to claim 5, characterized in that: The milling assembly (7) includes a transmission slider (71), which is slidably connected to a third slide rail (606). A mounting base (72) is fixedly connected to one side of the transmission slider (71). A second cylinder (73) is fixed on the mounting base (72). A motor frame (74) is fixed to the output shaft of the second cylinder (73). A third motor (75) is fixed inside the motor frame (74). A cutting tool (76) is fixedly connected to the output shaft of the third motor (75).

7. A double-sided milling machine for machining pipeline flange end plates according to claim 6, characterized in that: The adjustment assembly (6) further includes a second bearing seat (607), which is fixedly connected to a U-shaped seat (601). A rotating shaft (608) is rotatably connected to the second bearing seat (607). A drive rod (609) is fixed to one end of the rotating shaft (608). Both ends of the drive rod (609) are provided with strip holes (610). Short pins (611) are inserted into both strip holes (610). A push rod (612) is fixed to one end of the short pin (611). One end of the push rod (612) is fixedly connected to the transmission slider (71).

8. A double-sided milling machine for machining pipeline flange end plates according to claim 7, characterized in that: The rotating shaft (608) is fixedly connected to a second gear (613) at the end away from the drive rod (609). A third cylinder (614) is fixedly connected to one side of the U-shaped seat (601). A second rack (615) is fixed to the output shaft of the third cylinder (614). The second rack (615) is slidably connected to the side wall of the U-shaped seat (601). The second rack (615) meshes with the second gear (613).

9. A double-sided milling machine for machining pipeline flange end plates according to claim 3, characterized in that: The end of the strip slider (34) is fixed with a locking block (301). The surface of the locking block (301) is provided with a groove (302). The top of the locking block (301) is provided with a top plate (303). A ball bearing (304) is movably connected to the top of the top plate (303). A guide rod (305) is fixed to the bottom of the top plate (303). The guide rod (305) is movably inserted into the locking block (301). A spring (306) is sleeved on the outside of the guide rod (305). The two ends of the spring (306) are respectively The base shaft (307) is rotatably connected to the top plate (303) and the locking block (301). A cam (308) and a worm gear (309) are fixed on the base shaft (307). A fourth motor (310) is fixed on the side wall of the locking block (301). A worm (311) is fixed on the output shaft of the fourth motor (310). Both ends of the worm (311) are rotatably connected to the inner wall of the groove (302). The worm (311) meshes with the worm gear (309).

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