An integrated machining device for flanged pipe fittings

Abstract

The application relates to a flange pipe integrated processing device. The device comprises a rack, an outer die movably arranged on the rack, a forging table fixedly arranged on the rack and an inner rod rotatably arranged on the rack. The forging table is located at the limit position of the outer die movement, and the outer die and the inner rod are oppositely located on both sides of the forging table. A blank is arranged on the forging table close to one side of the outer die. The outer die reciprocally moves to act on the outside of the blank, and the inner rod rotates to act on the inside of the blank. The problems that welding processing leads to welding defects of the flange pipe and forging processing cannot be applied to batch production in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of processing equipment, and more particularly to an integrated processing device for flange pipe fittings. Background Technology

[0002] When flanges and pipe fittings are processed, there is a significant difference in wall thickness between the flange and the pipe fitting. The flange is then welded to the pipe fitting. Welding inevitably leads to defects such as weld seams. At the same time, the residual stress generated by welding can cause fatigue cracks during subsequent use, which can easily lead to leakage.

[0003] Forging can produce flange fittings with a dense structure and high strength, and it avoids defects caused by welding. However, forging requires steps such as heating the raw material, upsetting, drawing, punching, die forging, and finishing, making it unsuitable for mass production.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide an integrated processing device for flange pipe fittings, so as to solve the problems of welding defects caused by welding processing and the inapplicability of forging processing to mass production in the prior art.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: An integrated processing device for flange pipe fittings; It includes: a frame, an outer mold movably mounted on the frame, a forging table fixedly mounted on the frame, and an inner rod rotatably mounted on the frame; wherein, the forging table is located at the extreme position of the outer mold's movement, and the outer mold and the inner rod are located opposite each other on the forging table; the billet is mounted on the forging table near the outer mold, the outer mold reciprocates and acts on the outside of the billet, and the inner rod passes through the forging table and rotates and acts on the inside of the billet.

[0007] The alternating motion of the outer mold and the inner rod is divided into an initial processing stage, an extension processing stage, and a final shaping processing stage. In the initial processing stage: the outer mold and the inner rod move alternately relative to each other, the pipe position acted upon by the outer mold expands outward, and the pipe position acted upon by the inner rod contracts inward; During the extended processing stage: after the outer mold and the inner rod approach each other, they overlap inside and outside the position of the blank tube; During the shaping and processing stage: the inner rod rotates at a certain angle, causing the blank to rotate at a certain angle, and the outer mold reciprocates and acts on the flange position of the blank.

[0008] A further technical solution is that the frame includes: a frame body, an end frame movably mounted on the frame body, and a forging frame reciprocatingly mounted on the frame body; wherein the inner rod is rotatably mounted on the end frame; and the outer mold is mounted on the forging frame.

[0009] A further technical solution is that the outer mold includes: an outer cylinder mounted on the forging frame and a cylinder plate arranged around the outer cylinder; wherein, the forging frame drives the outer cylinder to act on the pipe position of the billet, and the forging frame drives the cylinder plate to act on the flange position of the billet.

[0010] A further technical solution is that the forging table includes: a main table vertically arranged on the frame, a boss arranged in the middle of the main table, and a table edge arranged around the main table; wherein the boss and the table edge are respectively arranged on both sides of the main table; the flange of the billet is located inside the table edge, and the inner rod passes through the boss and rotates to act inside the billet.

[0011] A further technical solution is that the inner rod includes a main rod and an end piece that transition with each other by circular arcs; wherein, a chamfer is formed at the transition position; the end piece, the chamfer, and the main rod rotate sequentially and act on the interior of the blank.

[0012] A further technical solution includes a reaming plate mounted on the forging table and an auxiliary plate mounted on the outer mold; wherein, reaming elements are formed side by side on the reaming plate, and through holes are formed side by side on the auxiliary plate, with the reaming elements corresponding to the through holes; the reaming plate and the auxiliary plate act on both sides of the flange position of the blank.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are as follows: (1) The outer mold of this application adopts a linear movement method, and the inner rod adopts a moving and rotating method. Since the thickness of the pipe is thin, the same position of the pipe is not subjected to excessive force and tearing is avoided by using two different movement methods; the alternating movement of the outer mold and the inner rod in this application is different, and is divided into the initial processing stage, the extension processing stage and the shaping processing stage; in the initial processing stage, the outer mold and the inner rod are moved alternately to complete the forging of the outer side of one end of the billet pipe and the forging of the inner side of the other end of the billet pipe. At this time, the deformation of the billet pipe is outward or inward, and the billet has space for deformation under force, so that the material density is improved after the billet is compressed, and the ductility of the billet pipe is improved, which is convenient for subsequent extension; since the outer mold and the inner rod move at this time, the outer mold and the inner rod are moved alternately. After a certain distance from the blank pipe fitting position, the outer mold and inner rod are moved and positioned to ensure uniform wall thickness of the blank pipe fitting position. During the extension processing stage, the outer mold stops moving after contacting the blank pipe fitting position, and the inner rod rotates back and forth. The rotation of the inner rod acts on the inner side of the blank pipe fitting position, while the linear movement of the outer mold acts on the outer side of the blank pipe fitting position. The blank pipe fitting position is placed between the outer mold and the inner rod to form an extension. Since the outer mold stops moving, its position is determined. After the inner rod passes through the forging table, it extends into the blank pipe fitting position. The insertion position of the inner rod is determined, making the wall thickness of the blank pipe fitting position uniform. During the shaping processing stage, the inner rod stops moving after extending into the blank pipe fitting position. The outer mold reciprocates and acts on the blank flange position. The rotation of the inner rod drives the blank to rotate. The outer mold can act on different positions of the blank flange position to ensure uniform force on the blank flange position.

[0014] (2) Both the outer mold and the inner rod are guided by guide rods. The positions of the outer mold and the inner rod are relatively fixed with small errors. The coaxiality of the outer mold and the inner rod ensures that the wall thickness of the pipe is uniform. The movement of the end frame is guided by the guide rod to ensure the accuracy of the movement position of the end frame, thereby ensuring the position accuracy of the inner rod.

[0015] (3) By alternating inclined and straight grooves, the continuous rotation of the inner rod is avoided from acting on the inside of the billet, and the billet is not subjected to large torsional forces, thus ensuring the processing quality of the pipe fitting. In the initial processing stage, the inner rod rotates at a small angle and moves a short distance, so the length of the inclined and straight grooves is short and the inclination angle of the inclined groove is small. In the extended processing stage, the inner rod rotates at a large angle and moves a long distance, so the length of the inclined and straight grooves is long and the inclination angle of the inclined groove is large. In the shaping processing stage, when the billet flange position is forged, the inner rod rotates continuously at a certain angle, so the length of the inclined groove is long and it is formed around the inner rod. When the flange hole at the billet flange position is forged, the inner rod stops rotating, the inclined groove is canceled, and the rotation of the inner rod is restricted by the straight groove. By changing the combination of inclined and straight grooves, the different rotational movement states of the inner rod can be changed to cope with different processing stages. Attached Figure Description

[0016] Figure 1A schematic diagram of the integrated processing device for flange pipe fittings according to an embodiment of the present invention is shown.

[0017] Figure 2 It shows Figure 1 Enlarged structural diagram of the inner rod position.

[0018] Figure 3 A schematic diagram of the unfolded structure of the main rod according to an embodiment of the present invention is shown.

[0019] Figure 4 It shows Figure 1 A partial structural diagram after the expansion plate and auxiliary plate are installed.

[0020] Figure 5 It shows Figure 4 Enlarged structural diagram of the mounting block location.

[0021] Figure 6 A schematic diagram illustrating the structural changes of the billet at each stage according to an embodiment of the present invention is shown.

[0022] The following labels are used in the attached diagram: 1. Frame; 11. Frame body; 111. First power unit; 112. Second power unit; 113. Third power unit; 12. End frame; 121. Mounting slot; 122. Mounting shaft; 123. First bearing; 13. Forging frame; 14. Guide rod; 15. Lifting plate; 2. Outer mold; 21. Outer cylinder; 211. Movable block; 212. Elastic device; 22. Cylinder plate; 221. Mounting block; 222. Hook; 25. Reinforcing rib; 3. Forging table; 31. Main table; 32. Boss; 321. Guide block; 33. Table edge; 4. Inner rod; 401. Inclined groove; 402. Straight groove; 41. Main rod; 42. End; 43. Turning block; 5. Expanding plate; 51. Auxiliary plate; 52. Expanding part; 53. Through hole. Detailed Implementation

[0023] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0024] Figure 1 A schematic diagram of the integrated processing device for flange pipe fittings according to an embodiment of the present invention is shown. (In conjunction with...) Figure 1 As shown, the present invention discloses an integrated processing device for flange pipe fittings, comprising: a frame 1, an outer mold 2 movably mounted on the frame 1, a forging table 3 fixedly mounted on the frame 1, and an inner rod 4 rotatably mounted on the frame 1.

[0025] The billet is mounted on the forging table 3, and the outer die 2 reciprocates along the frame 1, acting on the outer side of the billet. The forging table 3 is located at the extreme position of the outer die 2. During the movement of the outer die 2, it acts on the outer side of the billet fitting position. When the outer die 2 reaches its extreme position, both the outer die 2 and the forging table 3 act on the flange position of the billet. The outer die 2 and the inner rod 4 are located opposite each other on both sides of the forging table 3. The inner rod 4 passes through the forging table 3 from the opposite direction and rotates, acting on the inner side of the billet fitting position.

[0026] The billet is processed in batches through casting, and then integrally formed using an integrated flange fitting processing device. This eliminates casting defects and is suitable for mass production. The billet includes the flange and fitting positions, with a certain machining allowance. The flange position is thicker and has a smaller diameter, while the fitting position is thicker and shorter. The smaller billet size facilitates batch casting. The integrated flange fitting processing device forges and extends the billet to the preset dimensions. The outer mold 2 and inner rod 4 simultaneously press the inner and outer sides of the fitting position to shape it. The outer mold 2 and forging table 3 simultaneously press the two sides of the flange position to shape it.

[0027] The outer die 2 and the inner rod 4 are respectively installed on both sides of the forging table 3 on the frame 1. During blank processing, the blank is installed on the forging table 3 near the outer die 2. The outer die 2 reciprocates and acts on the outside of the blank, while the inner rod 4 rotates through the forging table 3 and acts on the inside of the blank. As the range of reciprocating movement of the outer die 2 gradually increases, the outer die 2 gradually completes the processing of the outer side of the pipe fitting from left to right and finally completes the forging processing of the flange position. As the depth of rotation of the inner rod 4 gradually increases, the inner rod 4 gradually completes the processing of the inner side of the pipe fitting from right to left.

[0028] If both the outer mold 2 and the inner rod 4 move linearly, the pipe fitting will experience significant friction both inside and outside, leading to localized tensile cracking. If both the outer mold 2 and the inner rod 4 move and rotate: if the rotation directions are the same, the pipe fitting will be torsional, causing breakage at the connection between the pipe fitting and the flange. If the rotation directions are opposite, the pipe fitting will experience torsional forces in different directions, resulting in internal cracks. In this application, the outer mold 2 moves linearly, and the inner rod 4 moves and rotates. Due to the thinness of the pipe fitting, these two different movement methods prevent excessive stress on the same location, thus avoiding tearing.

[0029] If the outer mold 2 and the inner rod 4 move relative to each other at the same time, the blank will be subjected to forces in different directions at the same time. When the forces from the outer mold 2 and the inner rod 4 are concentrated, the blank is easily deformed by extrusion.

[0030] Figure 6A schematic diagram illustrating the structural changes of the billet at each stage according to an embodiment of the present invention is shown. (Combined with...) Figure 1 and Figure 6 As shown, the alternating movement of the outer mold 2 and the inner rod 4 in this application varies, and is divided into an initial processing stage, an extension processing stage, and a final shaping processing stage. In the initial processing stage, the outer mold 2 and the inner rod 4 move alternately to complete the forging of the outer side of one end of the billet tube and the inner side of the other end. At this time, the deformation of the billet tube is either outward or inward, and the billet has space for deformation under stress, which increases the material density after compression and improves the ductility of the billet tube, facilitating subsequent extension. Since both the outer mold 2 and the inner rod 4 move a certain distance into the billet tube position at this time, the movement and positioning of the outer mold 2 and the inner rod 4 are completed, ensuring uniform wall thickness of the billet tube position in the subsequent process. In the extension processing stage, the outer mold 2 stops moving after contacting the billet tube position, and the inner rod 4 rotates back and forth. The rotational movement of the inner rod 4 acts on the inner side of the billet tube position, while the linear movement of the outer mold 2 acts on the outer side of the billet tube position. The billet tube position is positioned between the outer mold 2 and the inner rod 4, forming an extension. Since the outer mold 2 stops moving, its position is fixed. The inner rod 4 passes through the forging table 3 and extends into the blank fitting position. The insertion position of the inner rod 4 is fixed, ensuring uniform wall thickness at the blank fitting position. During the shaping and processing stage, the inner rod 4 stops moving after extending into the blank fitting position. The outer mold 2 reciprocates and acts on the blank flange position. The rotation of the inner rod 4 drives the blank to rotate. The outer mold 2 can act on different positions of the blank flange position, ensuring uniform force at the blank flange position.

[0031] In the initial processing stage: the blank tube has a certain thickness. The outer mold 2 and the inner rod 4 move alternately relative to each other. The tube position affected by the outer mold 2 expands outward, while the tube position affected by the inner rod 4 contracts inward. The left side of the blank tube position bears the force of the outer mold 2, and the right side bears the force of the inner rod 4. There is space for expansion and contraction on both sides of the blank tube position. The resistance to the movement of the outer mold 2 and the inner rod 4 is small, so the rotation angle of the inner rod 4 is small. Because the length of the blank tube position is short, the distance that the outer mold 2 and the inner rod 4 move alternately is short.

[0032] During the extension processing stage: After the outer mold 2 and the inner rod 4 approach each other, there is an overlap between the inner and outer sides acting on the blank tube position. The inner rod 4 restricts the tube position from expanding outward, while the outer mold 2 restricts the tube position from contracting inward. The blank tube position is positioned between the outer mold 2 and the inner rod 4 for extension. Because the blank tube position extends a long distance in this stage, the distance that the outer mold 2 and the inner rod 4 move alternately is long. At the same time, the inner rod 4 experiences great resistance, so the inner rod 4 rotates at a large angle.

[0033] During the final shaping stage: After the blank fitting position is extended, the outer mold 2 reciprocates and acts on the blank flange position. The inner rod 4 rotates at a certain angle, causing the blank to rotate at a certain angle, ensuring the outer mold 2 can evenly act on the blank flange position. After the blank flange position is forged, the flange hole is forged. The outer mold 2 continues to reciprocate and act on the blank flange position, while the inner rod 4 stops rotating, maintaining the blank position and completing the flange hole positioning.

[0034] The frame 1 includes: a frame body 11 arranged in the left-right direction, an end frame 12 movably arranged on the frame body 11, and a forging frame 13 reciprocally arranged on the frame body 11.

[0035] The frame 11 is equipped with a first power device 111, the power end of the first power device 111 is connected to the end frame 12, and the first power device 111 drives the end frame 12 to move along the frame 11.

[0036] Guide rods 14 are installed on the frame 11, and the guide rods 14 pass through the end frame 12. Since the outer mold 2 and the inner rod 4 need to complete the processing of the inner and outer sides of the blank pipe fitting, both the outer mold 2 and the inner rod 4 are guided by the guide rods 14. The positions of the outer mold 2 and the inner rod 4 are relatively fixed with small errors, and the coaxiality of the outer mold 2 and the inner rod 4 ensures the uniform wall thickness of the pipe fitting. The guide rods 14 guide the movement of the end frame 12, ensuring the accuracy of the movement position of the end frame 12, thereby ensuring the positional accuracy of the inner rod 4.

[0037] There are three sets of guide rods 14. Two sets of guide rods 14 pass through the upper part of the end frame 12, and one set of guide rods 14 passes through the lower part of the end frame 12, so that the end frame 12 drives the inner rod 4 to move in a stable linear motion. When the inner rod 4 acts on the inner side of the blank tube position, the three sets of guide rods 14 restrict the end frame 12 and prevent the end frame 12 from being displaced by the reaction force.

[0038] Figure 2 It shows Figure 1 Enlarged structural diagram of the inner rod position. Figure 3 A schematic diagram of the unfolded structure of the main rod according to an embodiment of the present invention is shown. (In conjunction with...) Figures 1-3 As shown, the end frame 12 forms a mounting groove 121, and a mounting shaft 122 is formed within the mounting groove 121. The inner rod 4 is rotatably mounted within the mounting groove 121, and the mounting shaft 122 is inserted into the inner rod 4. First bearings 123 are installed both in the mounting groove 121 and on the inner rod 4. The first bearings 123 form rotational supports from the inner and outer sides of the inner rod 4 to ensure the stability of the rotation of the inner rod 4.

[0039] A second power unit 112 is installed on the frame 11. The power end of the second power unit 112 is connected to the forging frame 13, and the second power unit 112 drives the forging frame 13 to move along the frame 11. Guide rods 14 also pass through the forging frame 13. Two sets of guide rods 14 pass through the upper part of the forging frame 13, and one set of guide rods 14 passes through the lower part of the forging frame 13, so that the forging frame 13 drives the outer mold 2 to move stably in a straight line. The outer mold 2 and the inner rod 4 share the guide rods 14 to ensure the coaxiality of the outer mold 2 and the inner rod 4, thereby ensuring the uniform wall thickness of the pipe fitting.

[0040] A lifting plate 15 is installed on the frame 11. The lifting plate 15 is connected to a third power unit 113. The third power unit 113 drives the lifting plate 15 to rise or fall, adjusting the position of the billet. When the billet is placed, the flange is positioned on the forging table 3, and the pipe fitting is positioned on the lifting plate 15. The third power unit 113 drives the lifting plate 15 to rise, moving the billet upward so that both ends of the billet are aligned with the outer mold 2 and the inner rod 4, respectively. During the initial processing stage, the outer mold 2 and the inner rod 4 provide support for both ends of the billet. The third power unit 113 then drives the lifting plate 15 to fall, no longer supporting the billet.

[0041] The outer mold 2 includes an outer cylinder 21 mounted on a forging frame 13 and a cylindrical plate 22 surrounding one end of the outer cylinder 21. During the movement of the outer mold 2 by the forging frame 13, the outer cylinder 21 first acts on the pipe fitting position of the blank. After the forging frame 13 moves the outer mold 2 to its limit position, the cylindrical plate 22 then acts on the flange position of the blank. This allows the outer mold 2 to complete the machining of the outer side of the pipe fitting position through the outer cylinder 21 and the forging of the flange position through the cylindrical plate 22.

[0042] The outer mold 2 also includes reinforcing ribs 25, which are connected to the outer cylinder 21 and the cylinder plate 22 respectively, ensuring a firm connection between the outer cylinder 21 and the cylinder plate 22.

[0043] The forging table 3 includes: a main table 31 vertically mounted on the frame 11, a boss 32 located in the middle of the main table 31, and a table edge 33 surrounding the main table 31. The boss 32 and the table edge 33 are respectively located on both sides of the main table 31. The boss 32 extends to the right near the inner rod 4, and the table edge 33 extends to the left near the outer mold 2.

[0044] The flange of the billet is placed within the platform edge 33, and the pipe fitting position is placed on the lifting plate 15. The platform edge 33 supports the flange position of the billet, and the lifting plate 15 supports the pipe fitting position, keeping the billet level. The inner rod 4 passes through the boss 32 and rotates, acting on the interior of the billet. The boss 32 is a through structure, with a guide block 321 formed inside. The inner rod 4 has interconnected inclined grooves 401 and straight grooves 402. When the inner rod 4 passes through the boss 32, the guide block 321 moves alternately along the inclined grooves 401 and straight grooves 402. When the guide block 321 moves along the inclined groove 401, it causes the inner rod 4 to rotate, acting on the interior of the billet. When the guide block 321 moves along the straight groove 402, it causes the inner rod 4 to impact, acting on the interior of the billet. The alternating inclined grooves 401 and straight grooves 402 prevent the inner rod 4 from continuously rotating and acting on the interior of the billet, avoiding large torsional forces inside the billet and ensuring the processing quality of the pipe fitting position.

[0045] The variations of the inclined groove 401 and the straight groove 402 are determined based on the processing requirements of the initial processing stage, the extension processing stage, and the final processing stage. In the initial processing stage, the inner rod 4 rotates at a small angle and moves a short distance, so the lengths of the inclined groove 401 and the straight groove 402 are short, and the inclination angle of the inclined groove 401 is small. In the extension processing stage, the inner rod 4 rotates at a large angle and moves a long distance, so the lengths of the inclined groove 401 and the straight groove 402 are long, and the inclination angle of the inclined groove 401 is large. In the final processing stage, during forging of the blank flange position, the inner rod 4 rotates continuously at a certain angle, so the length of the inclined groove 401 is long, forming around the inner rod 4; during forging of the flange hole at the blank flange position, the inner rod 4 stops rotating, the inclined groove 401 is eliminated, and the rotation of the inner rod 4 is restricted by the straight groove 402. By varying the combinations of the inclined groove 401 and the straight groove 402, different rotational movement states of the inner rod 4 are changed to cope with different processing stages.

[0046] The inner rod 4 includes a main rod 41 and an end 42 that transition with each other by circular arcs. The end 42 extends into the pipe fitting position and gradually presses outwards to the pipe fitting position, transitioning to the main rod 41 to determine the diameter of the hole at the pipe fitting position.

[0047] A chamfered block 43 is formed at the transition position between the main rod 41 and the end 42. The end 42, the chamfered block 43, and the main rod 41 rotate sequentially and act on the inner side of the blank. When a protrusion is formed locally on the inner side of the pipe fitting, the chamfered block 43 is used to remove the protrusion to ensure uniform wall thickness of the pipe fitting.

[0048] The main rod 41 and the outer mold 2 act on the pipe position to extrude and extend it, so that the pipe position extends to the preset length. However, the end face of the pipe position forms a serrated shape with different shapes, which requires shearing of the end face of the pipe position.

[0049] An arc-shaped movable block 211 is slidably mounted on the outer cylinder 21. The movable block 211 is connected to an elastic device 212, which pushes the movable block 211 inward. For example, the elastic device 212 is a spring. When the inner rod 4 moves close to its limit position, the chopping block 43 and the movable block 211 cooperate to cut the end face of the pipe fitting, ensuring a flat end face. As the inner rod 4 continues to move, the movable block 211 contacts the transition position. With the movement of the inner rod 4, the movable block 211 eventually contacts the outer surface of the main rod 41, ensuring the length of the pipe fitting.

[0050] When the inner rod 4 passes through the forging table 3, the guide block 321 enables the inner rod 4 to rotate and act on the pipe fitting position. Since the inner rod 4 and the outer die 2 act alternately on the pipe fitting position, when the inner rod 4 acts on the pipe fitting position, the inner rod 4 drives the blank to rotate at a certain angle, so that the outer die 2 can act on different positions on the outside of the pipe fitting position, ensuring the uniformity of the processing on the outside of the pipe fitting position.

[0051] After the inner rod 4 and outer mold 2 have been continuously processed, when the processing positions of the inner rod 4 and outer mold 2 overlap, the inner rod 4 drives the blank to rotate at a certain angle, avoiding the outer mold 2 from directly punching the outside of the blank, reducing the frictional resistance between the outer mold 2 and the blank, and the outer mold 2 smoothly completes the processing of the outside of the pipe fitting position, avoiding cracks on the outside of the pipe fitting position.

[0052] The billet is manufactured in batches using casting. The billet has allowances for the thickness of the flange and fitting positions, as well as for the diameter of the flange and the length of the fitting. After heating, the billet is placed on an integrated flange and fitting machining device for processing. The integrated machining steps of the integrated flange and fitting machining device are as follows: The inner rod 4 processes the inner side of the pipe fitting from right to left, moving gradually in one direction. The right end of the pipe fitting expands outward, while the outer mold 2 processes the outer side of the pipe fitting from left to right, moving gradually in one direction. The left end of the pipe fitting contracts inward. At this stage, the deformations of the pipe fitting do not overlap, and the movement of the inner rod 4 and outer mold 2 is smooth, completing the initial processing of the pipe fitting. In the initial processing stage, the inner rod 4 extends a certain distance into the pipe fitting, and the outer mold 2 moves a certain distance around the pipe fitting. The coaxiality of the inner rod 4 and outer mold 2 can be determined, thus ensuring that the wall thickness of the pipe fitting can be uniformly extended in the subsequent extension processing stage.

[0053] After the outer mold 2 moves to the preset position, it stops moving. The inner rod 4 continues to move and enters the extension processing stage. The inner rod 4 processes the inner side of the left end of the pipe fitting, causing the left end of the pipe fitting to expand outward under pressure from the inside. The outer mold 2 restricts the expansion from the outside, so the left end of the pipe fitting is under pressure both inside and outside. At the same time, the outer mold 2 processes the outer side of the right end of the pipe fitting, causing the right end of the pipe fitting to contract inward under pressure from the outside. The inner rod 4 restricts the contraction from the inside, so the right end of the pipe fitting is under pressure both inside and outside. The inner rod 4 and the outer mold 2 move further, causing both ends of the pipe fitting to be under pressure. The pipe fitting undergoes large deformation and extension, resulting in refined grains in the microstructure of the pipe fitting.

[0054] During the shaping and processing stage, the inner rod 4 extends into the preset position of the pipe fitting and stops moving. The outer mold 2 continues to move and acts on the flange position. The forging table 3 and the outer mold 2 forge the flange position from both sides, causing the flange position to expand under pressure. The forging table 3 restricts the size of the flange position. Since the inner rod 4 penetrates the pipe fitting, it provides support for the flange fitting and simultaneously restricts the flange position from contracting inward. The flange position extends outward to complete the shaping. The inner rod 4 drives the billet to rotate at a certain angle. The forging table 3 and the outer mold 2 forge different positions of the flange position to ensure uniform force on the flange position.

[0055] The integrated processing device for flange pipe fittings can process flange pipe fittings of preset dimensions. Subsequently, flange holes are processed on the flange by drilling. The integrated processing device for flange pipe fittings can also process flange pipe fittings of preset dimensions and process the preset flange holes by forging.

[0056] Figure 4 It shows Figure 1 A partial structural diagram after the expansion plate and auxiliary plate are installed. Figure 5 It shows Figure 4 An enlarged structural diagram of the mounting block location. (Combined with...) Figure 1 , Figure 4 and Figure 5 As shown, the integrated processing device for flange pipe fittings also includes an expansion plate 5 mounted on the forging table 3 and an auxiliary plate 51 mounted on the outer mold 2.

[0057] The expanding plate 5 and the auxiliary plate 51 are both annular in shape. Expanding elements 52 are formed side-by-side on the expanding plate 5, and through holes 53 are formed side-by-side on the auxiliary plate 51, with the expanding elements 52 corresponding to the through holes 53. An mounting block 221 is bolted to the side of the cylindrical plate 22. The mounting block 221 forms a hook 222 that extends into the edge of the auxiliary plate 51. After tightening the bolts, the mounting block 221 is fixed, and the auxiliary plate 51 is fixed to the cylindrical plate 22 via the hook 222. The expanding plate 5 and the auxiliary plate 51 are installed by splicing, without needing to disassemble the outer mold 2 and the inner rod 4, ensuring that the coaxiality of the outer mold 2 and the inner rod 4 remains consistent.

[0058] When the integrated processing device for flange fittings processes the pre-set flange hole, the outer mold 2 and inner rod 4 move synchronously to move the blank out of the forging table 3, and the expanding plate 5 is installed on the forging table 3. The outer mold 2 and inner rod 4 move synchronously to move the blank into the forging table 3. The outer mold 2 moves away from the forging table 3, and the auxiliary plate 51 is installed on the outer mold 2. The outer mold 2 resets and moves closer to the forging table 3. The outer mold 2 moves back and forth, so that the expanding plate 5 and the auxiliary plate 51 act on both sides of the flange position of the blank, respectively. After multiple forgings of the flange position, the expanding part 52 passes through the flange position and the through hole 53, thereby completing the forging of the flange hole.

[0059] By forging a pre-set hole and then machining the final flange hole through a subsequent hole-enlarging step, the overall strength of the flange is improved. The forging process using the pre-set hole ensures a denser structure within the flange area.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An integrated processing device for flange pipe fittings, characterized in that, include: The machine frame (1), the outer mold (2) movably mounted on the machine frame (1), the forging table (3) fixedly mounted on the machine frame (1), and the inner rod (4) rotatably mounted on the machine frame (1); wherein, the forging table (3) is located at the extreme position of the movement of the outer mold (2), and the outer mold (2) and the inner rod (4) are located opposite each other on both sides of the forging table (3); the billet is mounted on the forging table (3) on the side close to the outer mold (2), the outer mold (2) reciprocates and acts on the outside of the billet, and the inner rod (4) passes through the forging table (3) and rotates and acts on the inside of the billet; The alternating motion changes of the outer mold (2) and the inner rod (4) are divided into the initial processing stage, the extension processing stage and the shaping processing stage; In the initial processing stage: the outer mold (2) and the inner rod (4) move relative to each other alternately, the pipe position acted by the outer mold (2) expands outward, and the pipe position acted by the inner rod (4) contracts inward; During the extended processing stage: after the outer mold (2) and the inner rod (4) approach each other, they overlap inside and outside the position of the blank tube; During the shaping and processing stage: the inner rod (4) rotates at a certain angle, causing the blank to rotate at a certain angle, and the outer mold (2) moves back and forth to act on the flange position of the blank.

2. The integrated processing device for flange pipe fittings as described in claim 1, characterized in that, The frame (1) includes: a frame body (11), an end frame (12) movably mounted on the frame body (11), and a forging frame (13) reciprocally mounted on the frame body (11); wherein the inner rod (4) is rotatably mounted on the end frame (12); and the outer mold (2) is mounted on the forging frame (13).

3. The integrated processing device for flange pipe fittings as described in claim 2, characterized in that, The outer mold (2) includes an outer cylinder (21) mounted on the forging frame (13) and a cylinder plate (22) arranged around the outer cylinder (21); wherein the forging frame (13) drives the outer cylinder (21) to act on the pipe position of the billet, and the forging frame (13) drives the cylinder plate (22) to act on the flange position of the billet.

4. The integrated processing device for flange pipe fittings as described in claim 2, characterized in that, The forging table (3) includes: a main table (31) vertically arranged on the frame (11), a boss (32) arranged in the middle of the main table (31), and a table edge (33) arranged around the main table (31); wherein the boss (32) and the table edge (33) are respectively arranged on both sides of the main table (31); the flange of the billet is placed inside the table edge (33), and the inner rod (4) passes through the boss (32) and rotates inside the billet.

5. The integrated processing device for flange pipe fittings as described in claim 2, characterized in that, The inner rod (4) includes a main rod (41) and an end (42) that are mutually arc transitioned; wherein, a chamfer (43) is formed at the transition position; the end (42), the chamfer (43) and the main rod (41) rotate sequentially and act on the interior of the blank.

6. The integrated processing device for flange pipe fittings as described in claim 2, characterized in that, It also includes a reaming plate (5) mounted on the forging table (3) and an auxiliary plate (51) mounted on the outer mold (2); wherein, reaming parts (52) are formed side by side on the reaming plate (5), and through holes (53) are formed side by side on the auxiliary plate (51), and the reaming parts (52) correspond to the through holes (53); the reaming plate (5) and the auxiliary plate (51) act on both sides of the flange position of the blank.

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