A press-fit elbow processing device and its processing method

Abstract

The present invention discloses a pressing elbow processing device, which includes a loading rack, a flaring processing unit, a detection unit, an inner wall oiling unit, a pipe transferring manipulator unit, a first pipe bending unit and a second pipe bending unit; the workpieces are discharged one by one from the discharging position on the loading rack; after the workpieces are discharged from the loading rack, they enter the flaring processing unit, and the flaring processing unit processes a tapered opening structure at one end of the workpiece; after the workpieces are loaded and unloaded from the flaring processing unit, they enter the detection unit, and the detection unit is used to detect the weld position on the workpiece and rotate the workpiece through the weld position to rotate the workpiece to the pipe bending angle position; the pipe transferring manipulator unit is provided with a first material taking manipulator and a second material taking manipulator. When the pressing elbow is produced and processed by the present invention, steps such as automatic feeding, flaring processing, weld position detection, inner wall oiling, pipe bending processing, and unloading can be realized, with high automation degree, no manual operation required, and greatly improved production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe fitting processing, and particularly relates to a clamping elbow processing device and a processing method thereof. Background Art

[0002] Clamping elbows are widely used in fields such as automobiles, heating, and water supply. Clamping elbows are usually used for the corner connection of two pipe fittings. There is a kind of clamping elbow, and its structure is as shown in the appendix Figure 24 As shown, this clamping elbow 102 is processed with a seamless steel pipe as the raw material. Before processing, the seamless steel pipe is cut into straight pipe segments of a fixed length as blank parts. Then, the operator needs to send the blank parts to a pipe bending device for pipe bending processing to bend the blank parts into the required angles. Since a seamless steel pipe is used as the raw material, there will be a weld 103 on the blank parts and the clamping elbow 102. When the blank parts are subjected to pipe bending processing, the inner side of the bend will be subjected to a large extrusion force, and the outer side of the bend will be subjected to a large tensile force. These two positions are the ones where the force is the greatest, and the weld position on the blank parts is the weakest position. When subjected to a large extrusion force and tensile force, the weld is prone to cracking. Therefore, when the operator feeds the pipe for bending, attention also needs to be paid to the weld position on the blank parts to avoid the weld 103 from being at these two positions, namely the outer side and the inner side of the bend.

[0003] In the production and processing of traditional clamping elbows, there are the following deficiencies: 1. The degree of automation is low and the labor cost is high; 2. When processing a clamping elbow with a small length-diameter ratio, since the overall length of the blank part is small, the effective clamping length of the blank part is short, resulting in the clamping die on the pipe bending device being unable to effectively clamp the blank part, with insufficient clamping force on the blank part. The blank part is prone to slipping with the clamping die during the bending process, resulting in processing failure and workpiece scrapping. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies in the prior art and provide a clamping elbow processing device and a processing method thereof.

[0005] The purpose of the present invention is achieved through the following technical solutions: A clamping elbow processing device includes a loading rack, a flaring processing unit, a detection unit, an inner wall oiling unit, a pipe transfer manipulator unit, a first pipe bending unit, and a second pipe bending unit;

[0006] Workpieces are stored in the loading rack. The loading rack is provided with a discharging position, and the workpieces are discharged one by one from the discharging position on the loading rack;

[0007] After the workpieces are discharged from the loading rack, they enter the flaring processing unit. The flaring processing unit processes a tapered structure at one end of the workpieces; the flaring processing unit is provided with a blanking mechanism, and the blanking of the workpieces is realized through the blanking mechanism;

[0008] After the workpiece is loaded and unloaded from the flaring processing unit, it enters the detection unit. The detection unit is used to detect the weld position on the workpiece and rotate the workpiece according to the weld position, rotating the workpiece to the elbow angle position;

[0009] The pipe transfer manipulator unit is provided with a first material-taking manipulator and a second material-taking manipulator. The first material-taking manipulator is used to transfer the workpiece from the detection unit to the inner wall oiling unit, or transfer the workpiece from the inner wall oiling unit to the first elbow unit; the second material-taking manipulator is used to transfer the workpiece from the detection unit to the inner wall oiling unit, or transfer the workpiece from the inner wall oiling unit to the second elbow unit;

[0010] The first elbow unit and the second elbow unit have the same structure. The first elbow unit and the second elbow unit both include an elbow unit base, a swing arm component, and a circular die. The circular die is rotatably connected to the elbow unit base. The swing arm component is connected to the circular die and rotates together with the circular die; a fixed guide die and a movable guide die corresponding to the fixed guide die are provided on the elbow unit base; the fixed guide die is located on one side of the circular die; a fixed clamping die is provided on the circular die, and a movable clamping die corresponding to the fixed clamping die is provided on the swing arm component; when the movable clamping die and the fixed clamping die are closed, one end of the movable clamping die and the fixed clamping die forms an inner conical surface matching the conical structure on the workpiece;

[0011] A transposition guide rail is provided on the swing arm component, and a transposition seat is slidably connected to the transposition guide rail. A transposition oil cylinder for driving the transposition seat to move is provided on the swing arm component; a third guide rail is provided on the transposition seat, and a third sliding seat is slidably connected to the third guide rail. A front insert mandrel oil cylinder for driving the third sliding seat to move is provided on the transposition seat; a front insert mandrel is provided on the third sliding seat, and an outer conical surface matching the conical structure is provided on the front insert mandrel.

[0012] Preferably, the first elbow unit and the second elbow unit further include a boosting seat, a boosting guide rail, and a rear insert mandrel oil cylinder. The boosting guide rail is provided on the elbow unit base. The boosting seat is slidably connected to the boosting guide rail. A boosting sleeve is provided on the boosting seat. A boosting oil cylinder for driving the boosting seat to move is provided on the elbow unit base; a core rod is connected to the rear insert mandrel oil cylinder, and a rear insert mandrel is provided at one end of the core rod away from the rear insert mandrel oil cylinder; the core rod passes through the boosting seat and the boosting sleeve.

[0013] Preferably, the loading rack includes a hopper. One side of the hopper is the discharging position. The bottom surface of the hopper slopes downward towards the discharging position. The workpieces are stored in the hopper; a discharging port baffle is provided at the discharging position of the hopper. A discharging port guiding plate is provided at the upper end of the outlet baffle. A top material cylinder is provided below the discharging port baffle. A top material rack is connected to the piston rod of the top material cylinder, and a top material plate is provided on the top material rack;

[0014] When the workpiece is discharged, the ejector cylinder and the ejector plate push the workpiece onto the discharge port guide plate, and the workpiece rolls along the discharge port guide plate and is discharged.

[0015] Preferably, the flaring processing unit is arranged on one side of the discharging position of the loading rack; the flaring processing unit includes a base, on which a first fixed end plate and a second fixed end plate are provided, and a support guide rod is arranged between the first fixed end plate and the second fixed end plate; an adjustable baffle is arranged between the first fixed end plate and the second fixed end plate, and the adjustable baffle is slidably connected to the support baffle; a position adjusting mechanism for adjusting the position of the adjustable baffle is arranged between the second fixed end plate and the adjustable baffle; a first ramp baffle component is arranged on the adjustable baffle, a fixed seat is arranged on the support guide rod, and a second ramp baffle component corresponding to the first ramp baffle component is arranged on the fixed seat; both the first ramp baffle component and the second ramp baffle component are provided with ramp surfaces, and the bottom end of the ramp surface is the workpiece stop position;

[0016] A stamping oil cylinder is arranged on the first fixed end plate, a punch mounting plate is slidably connected to the support guide rod, and the piston rod of the stamping oil cylinder is connected to the punch mounting plate; a flaring punch is arranged on the punch mounting plate; when the workpiece stays at the workpiece stop position, the flaring punch is opposite to one end of the workpiece;

[0017] The blanking mechanism includes a discharging cylinder arranged below the first ramp baffle component and the second ramp baffle component, and a discharging guide rod is connected to the discharging cylinder; the detection unit is located on one side of the flaring processing unit, and the discharging guide rod is inclined downward towards the detection unit.

[0018] Preferably, the flaring processing unit further includes a first rotary cylinder, a rotating rod is connected to the first rotary cylinder, and pressing rods are arranged at both ends of the rotating rod; when flaring one end of the workpiece, when the workpiece is at the workpiece stop position, the pressing rods press on both ends of the workpiece.

[0019] Preferably, the detection unit includes a base and a first sliding seat, a first guide rail is arranged on the base, and the first sliding seat is slidably connected to the first guide rail; a first motor and a rotating shaft are arranged on the first sliding seat, one end of the rotating shaft is connected to the output shaft of the first motor, and a clamping device is arranged at the other end of the rotating shaft; a first pushing cylinder for driving the first sliding seat to move is arranged on the base; a first mounting seat and a second mounting seat are arranged on the first guide rail, a first supporting block and a second supporting block are respectively arranged on the first mounting seat and the second mounting seat; a second pushing cylinder is arranged on the second mounting seat, and a pushing block is connected to the second pushing cylinder; a visual detection device is also arranged on the second mounting seat; a photoelectric induction switch is also arranged on the base.

[0020] Preferably, the inner wall oiling unit includes a fixing frame, on which a second guide rail is provided, and a second sliding seat is slidably connected to the second guide rail. A driving mechanism for driving the second sliding seat to move is provided on the fixing frame; a telescopic rod is provided on the second sliding seat, the telescopic rod is of a hollow structure, and an oil passage is provided in the telescopic rod; one end of the telescopic rod is fixed to the second sliding seat and connected to an oil supply device, and the other end of the telescopic rod is provided with an oil injection head, and the oil injection head is provided with oil injection holes, and the oil injection holes are communicated with the oil passage; an oil wiping ring is provided on the outer ring surface of the oil injection head, and the outer diameter of the oil wiping ring is adapted to the inner diameter of the workpiece.

[0021] Preferably, the driving mechanism includes a transmission lead screw rotatably connected to the fixing frame, the transmission lead screw is arranged along the axial direction of the second guide rail, and one end of the transmission lead screw is connected to a second motor; the second sliding seat is in threaded cooperation with the transmission lead screw.

[0022] Preferably, it further includes a discharging conveyor line. The pipe transferring manipulator unit is provided with a first discharging manipulator and a second discharging manipulator. The first discharging manipulator is used to transfer the processed workpieces on the first pipe bending unit to the discharging conveyor line, and the second discharging manipulator is used to transfer the processed workpieces on the second pipe bending unit to the discharging conveyor line.

[0023] A processing method of a press-fit elbow processing device includes the following specific steps:

[0024] Step 1): Place the workpieces into the loading rack and discharge them one by one through the loading rack;

[0025] Step 2): After the workpieces are discharged from the loading rack, they enter the flaring processing unit. The two ends of the workpieces fall onto the inclined planes of the first inclined plane baffle member and the second inclined plane baffle member, and the workpieces roll down along the inclined planes until they stay at the workpiece staying positions. Then, the first rotary cylinder drives the rotating rod to rotate, so that the pressing rods at both ends of the rotating rod press the workpieces; then, the stamping oil cylinder drives the flaring punch to move, and the flaring punch performs flaring processing on one end of the workpiece to form a tapered structure at one end of the workpiece;

[0026] After the flaring processing is completed, the flaring punch and the pressing rods return to their original positions. The discharging air cylinder drives the discharging guide rod to rise, and the discharging guide rod lifts the workpiece. The workpiece rolls down along the discharging guide rod, so that the workpiece rolls onto the first supporting block and the second supporting block on the detection unit;

[0027] Step 3), after the photoelectric induction switch on the detection unit detects the presence of the workpiece, the second pushing cylinder drives the blanking block to move to the preset position, and the first pushing cylinder drives the first sliding seat to move, so that the clamping device presses against one end of the workpiece with a tapered opening structure, and the other end of the workpiece presses against the blanking block. Then the clamping device clamps one end of the workpiece; then the first motor drives the workpiece to rotate, and the visual detection device performs visual detection on the surface of the workpiece and searches for the position of the weld. When the position of the weld is detected, the workpiece is rotated to the bending angle position with the position of the weld as the reference; when the workpiece rotates to the bending angle position, the first motor stops, the clamping device releases the workpiece, and the first pushing cylinder and the second pushing cylinder return to their original positions. The workpiece is transferred to the inner wall oiling unit by the first material taking manipulator or the second material taking manipulator;

[0028] Step 4), the inner wall of the workpiece is oiled by the inner wall oiling unit; when oiling, first rotate the workpiece to a direction parallel to the extension rod by the first material taking manipulator or the second material taking manipulator, and make the end of the workpiece with the tapered opening structure face the oil injection head; first drive the extension rod to extend into the workpiece by the driving mechanism, and then drive the extension rod to withdraw from the workpiece; during the process of the extension rod extending into the workpiece, oil is injected into the inner wall of the workpiece through the oil injection head, and during the process of the extension rod withdrawing, the oil wiping ring spreads the oil on the inner wall evenly;

[0029] After the oiling is completed, the workpiece is transferred to the first bending unit by the first material taking manipulator or transferred to the second bending unit by the second material taking manipulator;

[0030] Step 5), the workpiece is bent by the first bending unit or the second bending unit; when bending, first place the workpiece between the fixed clamping die and the movable clamping die and between the fixed guiding die and the movable guiding die, and the tapered opening structure on the workpiece faces the front core rod; the workpiece is pre-clamped by the movable guiding die, the front core rod is driven by the transposition cylinder to move to a position facing the workpiece, and then the front core rod is inserted into the workpiece. The outer conical surface on the front core rod contacts the tapered opening structure on the workpiece, and the front core rod pushes the workpiece to move until the tapered opening structure on the workpiece contacts the inner conical surface on the fixed clamping die. Subsequently, the workpiece is clamped by the fixed guiding die and the movable guiding die; after the workpiece is clamped in place by the fixed guiding die and the movable guiding die, the front core rod withdraws from the workpiece;

[0031] The rear plug mandrel is inserted into the workpiece from the end far away from the tapered opening structure. After the rear plug mandrel is inserted in place, the movable clamping die and the fixed clamping die clamp the tapered end of the workpiece. At the same time, one end of the boosting sleeve is driven by the boosting cylinder and abuts against one end of the workpiece. Then, the swing arm component and the circular die rotate together, and the workpiece closely adheres to the circular die and bends until the workpiece is bent into the required angle. During the bending process of the workpiece, a fixed thrust is applied to one end of the workpiece through the boosting sleeve to reduce the resistance of the workpiece during bending.

[0032] When the bending of the workpiece is completed, the front plug mandrel is inserted into the workpiece again. Then, the movable clamping die and the fixed clamping die loosen the workpiece, and the transposition seat is driven to move horizontally by the transposition oil cylinder, so that the workpiece is horizontally separated from the circular die. Finally, the workpiece is grabbed by the first unloading manipulator or the second unloading manipulator and transferred to the unloading conveyor line.

[0033] The beneficial effects of the present invention are as follows: When the pressing elbow is produced and processed by the present invention, steps such as feeding, flaring processing, weld position detection, inner wall oiling, pipe bending processing, and unloading can be automatically realized. The degree of automation is high, and no manual operation is required, which greatly improves the production efficiency. Before the pipe bending processing of the workpiece, flaring processing is first carried out at one end of the workpiece to form a tapered opening structure. When the pipe bending processing is carried out by the pipe bending unit, the tapered opening structure cooperates with the inner tapered surfaces on the fixed clamping die and the movable clamping die, and the tapered opening structure is used to limit and constrain one end of the workpiece. When the pipe bending processing of the pressing elbow with a small length-diameter ratio is carried out, due to the existence of the tapered opening structure, even if the effective clamping length of the workpiece is short, the workpiece will not slip with the clamping die during the bending process, thereby avoiding the scrapping of the workpiece caused by processing failure. Since the tapered opening structure is only used to assist the pipe bending processing of the workpiece, after the pipe bending processing of the workpiece is completed, only the tapered opening structure needs to be cut off to obtain the required pressing elbow product. Brief Description of the Drawings

[0034] Figure 1 It is a top view of the present invention.

[0035] Figure 2 It is a processing flow chart of the present invention.

[0036] Figure 3 It is a structural schematic diagram of the feeding conveyor line.

[0037] Figure 4 It is a structural schematic diagram of the loading rack, the flaring processing unit and the detection unit.

[0038] Figure 5 It is a structural schematic diagram of the loading rack.

[0039] Figure 6 It is a structural schematic diagram of the flaring processing unit in one direction.

[0040] Figure 7 It is a schematic structural diagram of the flaring processing unit in another direction.

[0041] Figure 8 It is a schematic structural diagram of one end of the workpiece after flaring processing.

[0042] Figure 9 It is a schematic structural diagram of the detection unit.

[0043] Figure 10 It is a schematic structural diagram of the inner wall oiling unit.

[0044] Figure 11 It is a cross-sectional view of the oiling component.

[0045] Figure 12 It is a schematic structural diagram of the pipe transfer manipulator unit.

[0046] Figure 13 It is a schematic structural diagram of the first material taking manipulator.

[0047] Figure 14 It is a schematic diagram of the process of the material taking manipulator moving the workpiece from the detection unit to the inner wall oiling unit.

[0048] Figure 15 It is a schematic structural diagram of the first pipe bending unit.

[0049] Figure 16 It is a schematic diagram of the partial structure of the first pipe bending unit.

[0050] Figure 17 It is a schematic structural diagram of the front plug mandrel.

[0051] Figure 18 It is a schematic diagram when the movable clamping die and the fixed clamping die on the circular die are closed.

[0052] Figure 19 It is a partial cross-sectional view of the first pipe bending unit.

[0053] Figure 20 It is a schematic diagram when the material taking manipulator moves the workpiece onto the pipe bending unit.

[0054] Figure 21 It is a schematic diagram of the front plug mandrel inserted from one end of the workpiece.

[0055] Figure 22 It is a schematic diagram when the pipe bending unit is performing pipe bending processing on the workpiece.

[0056] Figure 23 It is a schematic diagram when the workpiece is moved away from the circular die after the pipe bending processing is completed.

[0057] Figure 24It is a schematic structural diagram of an existing pressed elbow.

[0058] In the figure: 1. Loading conveyor line, 11. Loading conveyor belt, 12. First edge guard, 13. Second edge guard, 2. Loading rack, 21. Hopper, 23. Outlet guiding plate, 24. Outlet baffle, 25. Pushing cylinder, 26. Pushing rack, 27. Pushing plate, 3. Flaring processing unit, 31. Base, 32. First fixed end plate, 33. Second fixed end plate, 34. Adjustable baffle, 35. Adjusting screw rod, 36. Support guiding rod, 37. Punch mounting plate, 38. Stamping oil cylinder, 39. Flaring punch, 310. Connecting plate, 311. First ramp material blocking component, 312. Fixed seat, 313. Second ramp material blocking component, 314. Unloading cylinder, 315. Unloading guiding rod, 316. Fixed plate, 317. First rotary cylinder, 318. Rotating rod, 319. Pressing rod, 320. Screw nut, 4. Detection unit, 41. Base, 42. First guide rail, 43. First sliding seat, 44. First motor, 45. Rotating shaft, 46. Clamping device, 47. First pushing cylinder, 48. First mounting seat, 49. First material supporting block, 410. Second mounting seat, 411. Second material supporting block, 412. Photoelectric induction switch, 413. Second pushing cylinder, 414. Pushing block, 415. Visual detection device, 5. Inner wall oiling unit, 51. Fixed frame, 52. Oil receiving tray, 53. Second guide rail, 54. Second sliding seat, 55. Second motor, 56. Transmission screw rod, 57. Extending rod, 58. Oil spraying head, 59. Oil wiping ring, 510. Oil passage, 511. Oil spraying hole, 6. Pipe transferring manipulator unit, 61. First horizontal cross beam, 62. Second horizontal cross beam, 63. First horizontal guide rail, 64. First rack, 65. Second horizontal guide rail, 66. Second rack, 67. First material taking manipulator, 68. Second material taking manipulator, 69. First unloading manipulator, 610. Second unloading manipulator, 611. Servo moving platform, 612. First material transferring motor, 613. First gear, 614. Second material transferring motor, 615. Vertical moving component, 616. Third rack, 617. Second rotary cylinder, 618. Clamping device, 7. First pipe bending unit, 71. Pipe bending unit base, 72. Circular die, 73. Fixed guiding die, 74. Movable guiding die, 75. Movable clamping die, 76. Rear core rod oil cylinder, 77. Rear core rod, 78. Swing arm component, 79. Transposition guide rail, 710. Transposition seat, 711. Third guide rail, 712. Third sliding seat, 713. Front core rod, 714. Front core rod oil cylinder, 715. Transposition oil cylinder, 716. Boosting seat, 717. Boosting sleeve, 718. Boosting oil cylinder, 723. Core rod, 725. Main body part, 726. Insertion part, 727. Outer conical surface, 728. Fixed clamping die, 729. Inner conical surface, 730. Boosting guide rail, 8. Second pipe bending unit, 9. Unloading conveyor line, 10. Workpiece, 101. Tapered opening structure, 102. Pressing elbow, 103. Weld. Detailed implementation mode

[0059] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0060] Those skilled in the art should understand that in the disclosure of the present invention, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0061] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation on the number.

[0062] As Figures 1 to 23 shown, a clamping elbow processing device includes a loading rack 2, a flaring processing unit 3, a detection unit 4, an inner wall oiling unit 5, a pipe transfer manipulator unit 6, a first pipe bending unit 7, a second pipe bending unit, and a discharging conveyor line 9.

[0063] The workpieces 10 are stored in the loading rack 2. The loading rack 2 is provided with a discharging position. The workpieces 10 are discharged one by one from the discharging position on the loading rack 2. Among them, the loading rack 2 includes a hopper 21. One side of the hopper 21 is the discharging position. The bottom surface of the hopper 21 slopes downward towards the discharging position. The workpieces 10 are stored in the hopper 21. A discharging port baffle 24 is provided at the discharging position of the hopper 21. An outlet guiding plate 23 is provided at the upper end of the outlet baffle. A top material cylinder 25 is provided below the discharging port baffle 24. A top material rack 26 is connected to the piston rod of the top material cylinder 25. A top material plate 27 is provided on the top material rack 26. Through grooves through which the top material plate 27 can pass are provided on the discharging port baffle 24 and the outlet guiding plate 23.

[0064] When the workpieces 10 are stored in the hopper 21, the workpieces 10 are sequentially laid on the bottom surface of the hopper 21. When the workpieces 10 are discharged, the workpieces 10 are pushed to the outlet guiding plate 23 by the top material cylinder 25 and the top material plate 27. The workpieces 10 roll along the outlet guiding plate 23 and are discharged.

[0065] On one side of the loading rack 2, there is a loading conveyor line 1, which is used to replenish the workpieces 10 into the hopper 21 of the loading rack 2. Among them, the loading conveyor line 1 includes a loading conveyor belt 11. On both sides of the loading conveyor belt 11, there are a first edge 12 and a second edge 13 respectively. The distance between the first edge 12 and the second edge 13 is exactly the length of one workpiece 10. One end of the loading conveyor belt 11 is docked with the hopper 21, and the workpieces 10 are replenished into the hopper 21 through the loading conveyor belt 11.

[0066] After the workpiece 10 exits from the loading rack 2, it enters the flaring processing unit 3. The flaring processing unit 3 processes a tapered opening structure 101 at one end of the workpiece 10. There is a blanking mechanism on the flaring processing unit 3, and the blanking of the workpiece 10 is realized through the blanking mechanism. The flaring processing unit 3 is arranged on one side of the discharging position of the loading rack 2.

[0067] Among them, the flaring processing unit 3 includes a base 31. On the base 31, there are a first fixed end plate 32 and a second fixed end plate 33. Between the first fixed end plate 32 and the second fixed end plate 33, there are four support guide rods 36. There is an adjustable baffle 34 between the first fixed end plate 32 and the second fixed end plate 33. The adjustable baffle 34 is slidably connected to the support baffle; between the second fixed end plate 33 and the adjustable baffle 34, there is a position adjustment mechanism for adjusting the position of the adjustable baffle 34. The position adjustment mechanism includes an adjustment screw rod 35 and a screw nut 320. The screw nut 320 is arranged on the second fixed end plate 33. The adjustment screw rod 35 passes through the screw nut 320 and is in threaded cooperation with the screw nut 320. One end of the adjustment screw rod 35 is rotatably connected to the second fixed end plate 33. The adjustment screw rod 35 is parallel to the support guide rod 36. By rotating the adjustment screw rod 35, the adjustable baffle 34 is driven to slide along the support guide rod 36, and thus the position of the adjustable baffle 34 is adjusted.

[0068] The adjustable baffle 34 is provided with a first ramp baffle member 311. On the support guide rod 36, there is a fixed seat 312. On the fixed seat 312, there is a second ramp baffle member 313 corresponding to the first ramp baffle member 311. Both the first ramp baffle member 311 and the second ramp baffle member 313 are provided with ramp surfaces, and the bottom end of the ramp surface is the workpiece stop position. On the first fixed end plate 32, there is a stamping oil cylinder 38. A punch mounting plate 37 is slidably connected to the support guide rod 36. The piston rod of the stamping oil cylinder 38 is connected to the punch mounting plate 37. The punch mounting plate 37 is provided with a flaring punch 39; when the workpiece 10 stops at the workpiece stop position, the flaring punch 39 is directly opposite to one end of the workpiece 10. There is a connecting plate 310 on the support guide rod 36. The connecting plate 310 is provided with a guide hole, and the flaring punch 39 passes through the guide hole.

[0069] The blanking mechanism includes a blanking cylinder 314 disposed below the first ramp material blocking member 311 and the second ramp material blocking member 313, and a blanking guide rod 315 is connected to the blanking cylinder 314; the detection unit 4 is located on one side of the flaring processing unit 3, and the blanking guide rod 315 is inclined downward in the direction of the detection unit 4.

[0070] The flaring processing unit 3 further includes a first rotary cylinder 317. The first rotary cylinder 317 is fixedly installed on the support guide rod 36 through a fixing plate 316. A rotating rod 318 is connected to the first rotary cylinder 317, and pressing rods 319 are provided at both ends of the rotating rod 318; when flaring one end of the workpiece 10, when the workpiece 10 is located at the workpiece staying position, the pressing rods 319 press on both ends of the workpiece 10.

[0071] After the workpiece 10 is loaded and unloaded from the flaring processing unit 3, it enters the detection unit 4. The detection unit 4 is used to detect the weld position on the workpiece 10 and rotate the workpiece 10 through the weld position, rotating the workpiece 10 to the elbow angle position. Among them, the detection unit 4 includes a base 41 and a first sliding seat 43. A first guide rail 42 is provided on the base 41, and the first sliding seat 43 is slidably connected to the first guide rail 42. A first motor 44 and a rotating shaft 45 are provided on the first sliding seat 43. The rotating shaft 45 is rotatably connected to the first sliding seat 43. The first motor 44 is fixed on the first sliding seat 43. One end of the rotating shaft 45 is connected to the output shaft of the first motor 44, and a clamping device 46 is provided at the other end of the rotating shaft 45. In the present invention, the clamping device 46 adopts a cylinder gripper. A first pushing cylinder 47 for driving the first sliding seat 43 to move is provided on the base 41, and the piston rod on the first pushing cylinder 47 is connected to the first sliding seat 43. A first mounting seat 48 and a second mounting seat 410 are provided on the first guide rail 42. The first mounting seat 48 and the second mounting seat 410 are fixed on the first guide rail 42 and cannot slide. A first material supporting block 49 and a second material supporting block 411 are respectively provided on the first mounting seat 48 and the second mounting seat 410; positioning grooves for placing and positioning the workpiece 10 are provided on both the first material supporting block 49 and the second material supporting block 411. A second pushing cylinder 413 is provided on the second mounting seat 410, and a material pushing block 414 is connected to the second pushing cylinder 413. A visual detection device 415 is also provided on the second mounting seat 410. A photoelectric induction switch 412 is further provided on the base 41; when the workpiece 10 is placed on the first material supporting block 49 and the second material supporting block 411, the photoelectric induction switch 412 is just located below the workpiece 10, and the photoelectric induction switch 412 is used to sense whether there is a workpiece 10 on the first material supporting block 49 and the second material supporting block 411. When the workpiece 10 is placed on the first material supporting block 49 and the second material supporting block 411, the visual detection device 415 is aligned with the surface of the workpiece 10. The visual detection device 415 is connected to a computer system, can take pictures of the workpiece 10 and perform visual detection, and can detect the weld position on the workpiece 10.

[0072] The transfer manipulator unit 6 includes a first horizontal crossbeam 61 and a second horizontal crossbeam 62. There are two second horizontal crossbeams 62, which are respectively located at both ends of the first horizontal crossbeam 61 and are perpendicular to the first horizontal crossbeam 61. A first horizontal guide rail 63 and a first rack 64 are provided on the first horizontal crossbeam 61, and a second horizontal guide rail 65 and a second rack 66 are provided on the second horizontal crossbeam 62. A first material taking manipulator 67 and a second material taking manipulator 68 are provided on the first horizontal crossbeam 61. A first unloading manipulator 69 is provided on one of the second horizontal crossbeams 62, and a second unloading manipulator 610 is provided on the other second horizontal crossbeam 62. The structures of the first material taking manipulator 67, the second material taking manipulator 68, the first unloading manipulator 69, and the second unloading manipulator 610 are the same. The first material taking manipulator 67, the second material taking manipulator 68, the first unloading manipulator 69, and the second unloading manipulator 610 all include a servo moving platform 611. A first material transfer motor 612 and a second material transfer motor 614 are provided on the servo moving platform 611. A first gear 613 is provided on the first material transfer motor 612, and a second gear is provided on the second material transfer motor 614. A vertical moving member 615 is slidably connected to the servo moving platform 611. A third rack 616 is provided on the vertical moving member 615. The setting direction of the third rack 616 is parallel to the moving direction of the vertical moving member 615. A second gear is provided on the second material transfer motor 614, and the second gear on the second material transfer motor 614 meshes with the third rack 616 on the vertical moving member 615, and the vertical moving member 615 is driven to move up and down by the second moving motor. A second swing cylinder 617 is provided at the lower end of the vertical moving member 615, and a clamping device 618 is provided on the second swing cylinder 617. In the present invention, the clamping device 618 is a cylinder gripper. Among them, the servo moving platforms 611 on the first material taking manipulator 67 and the second material taking manipulator 68 are both slidably connected to the first horizontal guide rail 63, and the first gears 613 on the first material taking manipulator 67 and the second material taking manipulator 68 mesh with the first rack 64, and the first material taking manipulator 67 and the second material taking manipulator 68 are driven to move along the first horizontal guide rail 63 by the first material transfer motors 612 on the first material taking manipulator 67 and the second material taking manipulator 68.

[0073] The servo moving platforms 611 on the first unloading manipulator 69 and the second unloading manipulator 610 are both slidably connected to the second horizontal guide rail 65, and the first gears 613 on the first unloading manipulator 69 and the second unloading manipulator 610 mesh with the second rack 66, and the first unloading manipulator 69 and the second unloading manipulator 610 are driven to move along the second horizontal guide rail 65 by the first material transfer motors 612 on the first unloading manipulator 69 and the second unloading manipulator 610. The clamping device 618 is driven to rotate by the second swing cylinder 617.

[0074] The first material taking manipulator 67 is used to move the workpiece 10 from the detection unit 4 to the inner wall oiling unit 5, or move the workpiece 10 from the inner wall oiling unit 5 to the first elbow bending unit 7; the second material taking manipulator 68 is used to move the workpiece 10 from the detection unit 4 to the inner wall oiling unit 5, or move the workpiece 10 from the inner wall oiling unit 5 to the second elbow bending unit. The first unloading manipulator 69 is used to transfer the workpiece 10 completed on the first elbow bending unit 7 to the unloading conveyor line 9, and the second unloading manipulator 610 is used to transfer the workpiece 10 completed on the second elbow bending unit to the unloading conveyor line 9.

[0075] The first elbow bending unit 7 and the second elbow bending unit have the same structure. The first elbow bending unit 7 and the second elbow bending unit both include an elbow bending unit base 71, a swing arm component 78, and a circular die 72. The circular die 72 is rotatably connected to the elbow bending unit base 71. The swing arm component 78 is connected to the circular die 72 and rotates together with the circular die 72. The circular die 72 is driven to rotate by a rotary oil cylinder. A fixed guide die 73 and a movable guide die 74 corresponding to the fixed guide die 73 are provided on the elbow bending unit base 71. The fixed guide die 73 is located on one side of the circular die 72. The movable guide die 74 can move relative to the fixed guide die 73 and is used to clamp the workpiece 10. A fixed clamping die 728 is provided on the circular die 72, and a movable clamping die 75 corresponding to the fixed clamping die 728 is provided on the swing arm component 78. The movable clamping guide die can move relative to the fixed clamping die 728. When the movable clamping die 75 and the fixed clamping die 728 are closed, an inner conical surface 729 matching the conical opening structure 101 on the workpiece 10 is formed at one end of the movable clamping die 75 and the fixed clamping die 728.

[0076] A transposition guide rail 79 is provided on the swing arm component 78. A transposition seat 710 is slidably connected to the transposition guide rail 79. A transposition oil cylinder 715 for driving the transposition seat 710 to move is provided on the swing arm component 78. The piston rod of the transposition oil cylinder 715 is connected to the transposition seat 710. A third guide rail 711 is provided on the transposition seat 710. A third sliding seat 712 is slidably connected to the third guide rail 711. A front insert core rod oil cylinder 714 for driving the third sliding seat 712 to move is provided on the transposition seat 710. The arrangement direction of the transposition oil cylinder 715 is perpendicular to the arrangement direction of the front insert core rod oil cylinder 714. A front insert core rod 713 is provided on the third sliding seat 712. Among them, the front insert core rod 713 includes a main body portion 725 and an insertion portion 726. The diameter of the main body portion 725 is larger than the inner diameter of the workpiece 10, and the diameter of the insertion portion 726 matches the inner diameter of the workpiece 10. An outer conical surface 727 matching the conical opening structure 101 is provided between the main body portion 725 and the insertion portion 726.

[0077] The first elbow unit 7 and the second elbow unit further include a boosting seat 716, a boosting guide rail 730, and a rear plug mandrel oil cylinder 76. The boosting guide rail 730 is arranged on the elbow unit base 71. The boosting seat 716 is slidably connected to the boosting guide rail 730. A boosting sleeve 717 is provided on the boosting seat 716. The cross-section of the boosting sleeve 717 is the same as that of the workpiece 10. Both the boosting sleeve 717 and the workpiece 10 are cylindrical. A boosting oil cylinder 718 for driving the boosting seat 716 to move is provided on the elbow unit base 71. The rear plug mandrel oil cylinder 76 is fixed on the elbow unit base 71, and the rear plug mandrel oil cylinder 76 is located on the side of the boosting seat 716 away from the circular die 72. A core rod 723 is connected to the rear plug mandrel oil cylinder 76. A rear plug mandrel 77 is provided at one end of the core rod 723 away from the rear plug mandrel oil cylinder 76. The core rod 723 passes through the boosting seat 716 and the boosting sleeve 717. When the workpiece 10 is clamped between the fixed guide die 73 and the movable guide die 74, the rear plug mandrel 77 faces one end of the workpiece 10.

[0078] The inner wall oiling unit 5 includes a fixing frame 51. A second guide rail 53 is provided on the fixing frame 51. A second sliding seat 54 is slidably connected to the second guide rail 53. A driving mechanism for driving the second sliding seat 54 to move is provided on the fixing frame 51. Among them, the driving mechanism includes a transmission lead screw 56 rotatably connected to the fixing frame 51. The transmission lead screw 56 is arranged along the axial direction of the second guide rail 53. One end of the transmission lead screw 56 is connected to a second motor 55. The second sliding seat 54 is in threaded cooperation with the transmission lead screw 56. The second motor 55 drives the transmission lead screw 56 to rotate, and then the transmission lead screw 56 drives the second sliding seat 54 to move along the second guide rail 53.

[0079] An oiling component is provided on the second sliding seat 54. The oiling component includes an extension rod 57. The extension rod 57 is of a hollow structure, and an oil passage 510 is provided in the extension rod 57. One end of the extension rod 57 is fixed to the second sliding seat 54 and is connected to an oil supply device. An oil injection head 58 is provided at the other end of the extension rod 57. Oil injection holes 511 are provided on the oil injection head 58. The oil injection holes 511 are communicated with the oil passage 510. An oil wiping ring 59 is provided on the outer ring surface of the oil injection head 58. The outer diameter of the oil wiping ring 59 is adapted to the inner diameter of the workpiece 10. In the present invention, the oil wiping ring 59 is made of materials such as wool or oil felt. An oil receiving tray 52 is provided on the fixing frame. The oil receiving tray 52 is located below the oiling component.

[0080] A processing method of a pressing elbow processing device includes the following specific steps:

[0081] Step 1): Place the workpiece 10 into the loading rack 2, and discharge the workpieces one by one through the loading rack 2.

[0082] Step 2): After the workpiece 10 is discharged from the loading rack 2, it enters the flaring processing unit 3. Both ends of the workpiece 10 fall onto the inclined surfaces of the first inclined baffle member 311 and the second inclined baffle member 313. The workpiece 10 rolls downward along the inclined surface until it stays at the workpiece staying position. The rotating rod 318 is driven to rotate by the first rotary cylinder 317, so that the pressure rods 319 at both ends of the rotating rod 318 press the workpiece 10; then the stamping oil cylinder 38 drives the flaring punch 39 to move, and the flaring punch 39 performs flaring processing on one end of the workpiece 10, so that a tapered opening structure 101 is formed at one end of the workpiece 10.

[0083] After the flaring processing is completed, the flaring punch 39 and the pressure rod 319 return to their original positions. The unloading cylinder 314 drives the unloading guide rod 315 to rise. The unloading guide rod 315 lifts the workpiece 10, and the workpiece 10 rolls downward along the unloading guide rod 315, so that the workpiece 10 rolls onto the first supporting block 49 and the second supporting block 411 on the detection unit 4.

[0084] Step 3): After the photoelectric induction switch 412 on the detection unit 4 detects the presence of the workpiece 10, the second pushing cylinder 413 drives the ejector block 414 to move to the preset position. The first pushing cylinder 47 drives the first sliding seat 43 to move, so that the clamping device 46 presses against one end of the workpiece 10 with the tapered opening structure 101, and the other end of the workpiece 10 presses against the ejector block 414. Then the clamping device 46 clamps one end of the workpiece 10; then the first motor 44 drives the workpiece 10 to rotate, and the visual detection device 415 performs visual detection on the surface of the workpiece 10 and locates the position of the weld. When the position of the weld is detected, the workpiece 10 is rotated to the bent pipe angle position with the position of the weld as the reference; when the workpiece 10 is rotated to the bent pipe angle position, the first motor 44 stops, the clamping device 46 releases the workpiece 10, the first pushing cylinder 47 and the second pushing cylinder 413 return to their original positions, and the workpiece 10 is transferred to the inner wall oiling unit 5 by the first picking manipulator 67 or the second picking manipulator 68.

[0085] Step 4): The inner wall of the workpiece 10 is oiled by the inner wall oiling unit 5; when oiling, first the workpiece 10 is rotated to a direction parallel to the extending rod 57 by the first picking manipulator 67 or the second picking manipulator 68, and the end of the workpiece 10 with the tapered opening structure 101 faces the oil injection head 58; first the driving mechanism drives the extending rod 57 to extend into the workpiece 10, and then the extending rod 57 is driven to withdraw from the workpiece 10; during the process of the extending rod 57 extending into the workpiece 10, the oil injection head 58 injects oil into the inner wall of the workpiece 10, and during the process of the extending rod 57 withdrawing, the oil wiping ring 59 spreads the oil on the inner wall evenly.

[0086] After the oiling is completed, the workpiece 10 is transferred to the first bending unit 7 by the first material taking manipulator 67 or the workpiece 10 is transferred to the second bending unit by the second material taking manipulator 68.

[0087] Step 5): The workpiece 10 is bent by the first bending unit 7 or the second bending unit; during the bending process, the workpiece 10 is first sent between the fixed clamping die 728 and the movable clamping die 75 and between the fixed guiding die 73 and the movable guiding die 74, and the tapered opening structure 101 on the workpiece 10 faces the front core rod 713; the workpiece 10 is pre-clamped by the movable guiding die 74, the front core rod 713 is driven by the transposition oil cylinder 715 to move to a position opposite to the workpiece 10, then the front core rod 713 is inserted into the workpiece 10, the outer tapered surface 727 on the front core rod 713 contacts the tapered opening structure 101 on the workpiece 10, and the workpiece 10 is pushed by the front core rod 713 to move until the tapered opening structure 101 on the workpiece 10 contacts the inner tapered surface 729 on the fixed clamping die 728, and then the workpiece 10 is clamped by the fixed guiding die 73 and the movable guiding die 74; after the workpiece 10 is clamped in place by the fixed guiding die 73 and the movable guiding die 74, the front core rod 713 withdraws from the workpiece 10;

[0088] The rear core rod 77 is inserted from one end of the workpiece 10 away from the tapered opening structure 101. After the rear core rod (77) is inserted in place, the movable clamping die (75) and the fixed clamping die (728) clamp the tapered end of the workpiece (10); at the same time, one end of the boosting sleeve 717 is driven by the boosting air cylinder 718 and abuts against one end of the workpiece 10; then the swing arm component 78 and the circular die 72 rotate together, and the workpiece 10 clings to the circular die 72 and bends until the workpiece 10 is bent into the required angle; during the bending process of the workpiece 10, a fixed thrust is applied to one end of the workpiece 10 through the boosting sleeve 717 to reduce the resistance of the workpiece 10 during bending;

[0089] In this step, when the movable guiding die 74 pre-clamps the workpiece 10, the workpiece 10 is clamped and restricted with a relatively small clamping force. When the workpiece 10 is subjected to the axial fixed thrust of the front core rod 713, the workpiece 10 can slide between the movable guiding die 74 and the fixed guiding die 73 to ensure that the tapered opening structure 101 on the workpiece 10 can move to contact the inner tapered surface 729 on the fixed clamping die 728;

[0090] When the bending of the workpiece 10 is completed, the front core rod 713 is inserted into the workpiece 10 again, then the movable clamping die 75 and the fixed clamping die 728 release the workpiece 10, the transposition seat 710 is driven by the transposition oil cylinder 715 to move horizontally, so that the workpiece 10 is horizontally separated from the circular die 72, and finally the workpiece 10 is grabbed by the first unloading manipulator 69 or the second unloading manipulator 610 and the workpiece 10 is transferred to the unloading conveyor line 9.

[0091] When the present invention is used for the production and processing of the pressed elbow, it can automatically realize steps such as feeding, flaring processing, weld position detection, inner wall oiling, elbow processing, unloading, etc. It has a high degree of automation and does not require manual operation, greatly improving the production efficiency.

[0092] Before the present invention performs elbow processing on the workpiece 10, it first performs flaring processing on one end of the workpiece 10 to form a tapered opening structure 101. When performing elbow processing through the elbow processing unit, the tapered opening structure 101 cooperates with the inner tapered surface 729 on the fixed clamping die 728 and the movable clamping die 75, and the tapered opening structure 101 is used to limit and constrain one end of the workpiece 10. When performing elbow processing on a pressed elbow with a small length-diameter ratio, due to the existence of the tapered opening structure 101, even if the effective clamping length of the workpiece 10 is short, the workpiece 10 will not slip with the clamping die during the bending process, thus avoiding workpiece scrapping caused by processing failure. Since the tapered opening structure 101 is only used to assist the elbow processing of the workpiece 10, after the elbow processing of the workpiece 10 is completed, only the tapered opening structure 101 needs to be cut off to obtain the required pressed elbow product.

[0093] The present invention is not limited to the above-mentioned optimal implementation manner. Anyone can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as it has a technical solution identical or similar to the present application, it falls within the protection scope of the present invention.

Claims

1. A pressing elbow processing device, characterized in that, It includes a loading rack (2), a flaring processing unit (3), a detection unit (4), an inner wall oiling unit (5), a pipe transfer manipulator unit (6), a first pipe bending unit (7) and a second pipe bending unit; The workpieces (10) are stored in the loading rack (2). There is a discharging position on the loading rack (2), and the workpieces (10) are discharged one by one from the discharging position on the loading rack (2); After the workpiece (10) is discharged from the loading rack (2), it enters the flaring processing unit (3). The flaring processing unit (3) processes a tapered opening structure (101) at one end of the workpiece (10); A blanking mechanism is provided on the flaring processing unit (3), and the blanking of the workpiece (10) is realized through the blanking mechanism; After the workpiece (10) is blanked from the flaring processing unit (3), it enters the detection unit (4). The detection unit (4) is used to detect the weld position on the workpiece (10) and rotate the workpiece (10) according to the weld position, rotating the workpiece (10) to the pipe bending angle position; The pipe transfer manipulator unit (6) is provided with a first picking manipulator (67) and a second picking manipulator (68). The first picking manipulator (67) is used to transfer the workpiece (10) from the detection unit (4) to the inner wall oiling unit (5), or transfer the workpiece (10) from the inner wall oiling unit (5) to the first pipe bending unit (7); The second picking manipulator (68) is used to transfer the workpiece (10) from the detection unit (4) to the inner wall oiling unit (5), or transfer the workpiece (10) from the inner wall oiling unit (5) to the second pipe bending unit; The first pipe bending unit (7) and the second pipe bending unit have the same structure. The first pipe bending unit (7) and the second pipe bending unit both include a pipe bending unit base (71), a swing arm component (78), and a circular die (72). The circular die (72) is rotatably connected to the pipe bending unit base (71), and the swing arm component (78) is connected to the circular die (72) and rotates together with the circular die (72); A fixed guide die (73) and a movable guide die (74) corresponding to the fixed guide die (73) are provided on the pipe bending unit base (71); The fixed guide die (73) is located on one side of the circular die (72); A fixed clamping die (728) is provided on the circular die (72), and a movable clamping die (75) corresponding to the fixed clamping die (728) is provided on the swing arm component (78); When the movable clamping die (75) and the fixed clamping die (728) are closed, one end of the movable clamping die (75) and the fixed clamping die (728) forms an inner conical surface (729) matching the tapered opening structure (101) on the workpiece (10); The swing arm component (78) is provided with a transposition guide rail (79), a transposition seat (710) is slidably connected to the transposition guide rail (79), and the swing arm component (78) is provided with a transposition oil cylinder (715) for driving the transposition seat (710) to move; the transposition seat (710) is provided with a third guide rail (711), a third sliding seat (712) is slidably connected to the third guide rail (711), and the transposition seat (710) is provided with a front insert mandrel oil cylinder (714) for driving the third sliding seat (712) to move; the third sliding seat (712) is provided with a front insert mandrel (713), and the front insert mandrel (713) is provided with an outer conical surface (727) matching the conical opening structure (101).

2. A pressing elbow processing device according to claim 1, characterized in that, The first bending unit (7) and the second bending unit further include a boosting seat (716), a boosting guide rail (730), and a rear insert mandrel oil cylinder (76). The boosting guide rail (730) is arranged on the bending unit base (71), the boosting seat (716) is slidably connected to the boosting guide rail (730), the boosting seat (716) is provided with a boosting sleeve (717), and the bending unit base (71) is provided with a boosting oil cylinder (718) for driving the boosting seat (716) to move; a core rod (723) is connected to the rear insert mandrel oil cylinder (76), and a rear insert mandrel (77) is arranged at one end of the core rod (723) far from the rear insert mandrel oil cylinder (76); the core rod (723) passes through the boosting seat (716) and the boosting sleeve (717).

3. A pressing elbow processing device according to claim 1, characterized in that, The loading rack (2) includes a hopper (21). One side of the hopper (21) is the discharging position, the bottom surface of the hopper (21) slopes downward towards the discharging position, and the workpieces (10) are stored in the hopper (21); a discharging port baffle (24) is arranged at the discharging position of the hopper (21), a discharging port guide plate (23) is arranged at the upper end of the outlet baffle, a top material cylinder (25) is arranged below the discharging port baffle (24), a top material rack (26) is connected to the piston rod of the top material cylinder (25), and a top material plate (27) is arranged on the top material rack (26); When the workpiece (10) is discharged, the workpiece (10) is pushed onto the discharging port guide plate (23) by the top material cylinder (25) and the top material plate (27), and the workpiece (10) rolls along the discharging port guide plate (23) and is discharged.

4. The pressing elbow processing equipment according to claim 2, characterized in that, The flaring processing unit (3) is arranged on one side of the discharging position of the loading rack (2); the flaring processing unit (3) includes a base (31), on which a first fixed end plate (32) and a second fixed end plate (33) are provided, and a support guiding rod (36) is arranged between the first fixed end plate (32) and the second fixed end plate (33); an adjustable baffle (34) is arranged between the first fixed end plate (32) and the second fixed end plate (33), and the adjustable baffle (34) is slidably connected to the support baffle; a position adjusting mechanism for adjusting the position of the adjustable baffle (34) is arranged between the second fixed end plate (33) and the adjustable baffle (34); a first ramp material retaining part (311) is arranged on the adjustable baffle (34), a fixed seat (312) is arranged on the support guiding rod (36), and a second ramp material retaining part (313) corresponding to the first ramp material retaining part (311) is arranged on the fixed seat (312); both the first ramp material retaining part (311) and the second ramp material retaining part (313) are provided with ramp surfaces, and the bottom end of the ramp surface is the staying position of the workpiece (10). A stamping oil cylinder (38) is arranged on the first fixed end plate (32), a punch mounting plate (37) is slidably connected to the support guiding rod (36), and the piston rod of the stamping oil cylinder (38) is connected to the punch mounting plate (37); a flaring punch (39) is arranged on the punch mounting plate (37); when the workpiece (10) stays at the staying position of the workpiece (10), the flaring punch (39) faces one end of the workpiece (10). The blanking mechanism includes a blanking air cylinder (314) arranged below the first ramp material retaining part (311) and the second ramp material retaining part (313), and a blanking guide rod (315) is connected to the blanking air cylinder (314); the detection unit (4) is located on one side of the flaring processing unit (3), and the blanking guide rod (315) slopes downward in the direction of the detection unit (4).

5. A pressing elbow processing device according to claim 4, characterized in that, The flaring processing unit (3) further includes a first rotary air cylinder (317), a rotating rod (318) is connected to the first rotary air cylinder (317), and pressing rods (319) are arranged at both ends of the rotating rod (318); when flaring one end of the workpiece (10), when the workpiece (10) is at the staying position of the workpiece (10), the pressing rods (319) press on both ends of the workpiece (10).

6. The pressing elbow processing equipment according to claim 5, characterized in that, The detection unit (4) includes a base (41) and a first sliding seat (43). A first guide rail (42) is provided on the base (41), and the first sliding seat (43) is slidably connected to the first guide rail (42). A first motor (44) and a rotating shaft (45) are provided on the first sliding seat (43). One end of the rotating shaft (45) is connected to the output shaft of the first motor (44), and a clamping device (46) is provided at the other end of the rotating shaft (45). A first pushing cylinder (47) for driving the first sliding seat (43) to move is provided on the base (41). A first mounting seat (48) and a second mounting seat (410) are provided on the first guide rail (42), and a first material supporting block (49) and a second material supporting block (411) are respectively provided on the first mounting seat (48) and the second mounting seat (410). A second pushing cylinder (413) is provided on the second mounting seat (410), and a material pushing block (414) is connected to the second pushing cylinder (413). A vision detection device (415) is further provided on the second mounting seat (410). An optoelectronic induction switch (412) is also provided on the base (41).

7. A pressing elbow processing device according to claim 6, characterized in that, The inner wall oiling unit (5) includes a fixing frame (51). A second guide rail (53) is provided on the fixing frame (51), and a second sliding seat (54) is slidably connected to the second guide rail (53). A driving mechanism for driving the second sliding seat (54) to move is provided on the fixing frame (51). A telescopic rod (57) is provided on the second sliding seat (54). The telescopic rod (57) is of a hollow structure, and an oil passage (510) is provided in the telescopic rod (57). One end of the telescopic rod (57) is fixed to the second sliding seat (54) and is connected to an oil supply device. An oil injection head (58) is provided at the other end of the telescopic rod (57). Oil injection holes (511) are provided on the oil injection head (58), and the oil injection holes (511) communicate with the oil passage (510). An oil wiping ring (59) is provided on the outer ring surface of the oil injection head (58), and the outer diameter of the oil wiping ring (59) is adapted to the inner diameter of the workpiece (10).

8. The pressing elbow processing equipment according to claim 7, wherein, The driving mechanism includes a transmission screw rod (56) rotatably connected to the fixing frame (51). The transmission screw rod (56) is arranged along the axial direction of the second guide rail (53), and one end of the transmission screw rod (56) is connected to a second motor (55). The second sliding seat (54) is in threaded cooperation with the transmission screw rod (56).

9. A pressing elbow processing device according to claim 7, characterized in that, It further includes a discharging conveyor line (9). A first discharging manipulator (69) and a second discharging manipulator (610) are provided on the pipe transferring manipulator unit (6). The first discharging manipulator (69) is used to transfer the workpiece (10) processed on the first pipe bending unit (7) to the discharging conveyor line (9), and the second discharging manipulator (610) is used to transfer the workpiece (10) processed on the second pipe bending unit to the discharging conveyor line (9).

10. A processing method of the pressing elbow processing equipment according to claim 9, characterized in that, It includes the following specific steps: Step 1): Place the workpiece (10) into the loading rack (2), and discharge them one by one through the loading rack (2). Step 2): After the workpiece (10) exits the loading rack (2), it enters the flaring processing unit (3). The two ends of the workpiece (10) fall onto the inclined surfaces of the first inclined baffle member (311) and the second inclined baffle member (313). The workpiece (10) rolls downward along the inclined surface until it stays at the workpiece (10) staying position. The rotating rod (318) is driven to rotate by the first rotary cylinder (317), so that the pressure rods (319) at both ends of the rotating rod (318) press the workpiece (10); then the stamping oil cylinder (38) drives the flaring punch (39) to move, and the flaring punch (39) performs flaring processing on one end of the workpiece (10) to form a tapered opening structure (101) at one end of the workpiece (10). After the flaring processing is completed, the flaring punch (39) and the pressure rod (319) return to their original positions. The unloading cylinder (314) drives the unloading guide rod (315) to rise, and the unloading guide rod (315) lifts the workpiece (10). The workpiece (10) rolls downward along the unloading guide rod (315), so that the workpiece (10) rolls onto the first supporting block (49) and the second supporting block (411) on the detection unit (4). Step 3): After the photoelectric induction switch (412) on the detection unit (4) detects the presence of the workpiece (10), the second pushing cylinder (413) drives the ejector block (414) to move to the preset position. The first pushing cylinder (47) drives the first sliding seat (43) to move, so that the clamping device (46) presses against one end of the workpiece (10) with the tapered opening structure (101), and the other end of the workpiece (10) presses against the ejector block (414). Then the clamping device (46) clamps one end of the workpiece (10); then the first motor (44) drives the workpiece (10) to rotate, and the visual detection device (415) performs visual detection on the surface of the workpiece (10) to find the position of the weld. When the position of the weld is detected, the workpiece (10) is rotated to the bending angle position with the position of the weld as the reference; when the workpiece (10) is rotated to the bending angle position, the first motor (44) stops, the clamping device (46) releases the workpiece (10), the first pushing cylinder (47) and the second pushing cylinder (413) return to their original positions, and the workpiece (10) is transferred to the inner wall oiling unit (5) by the first picking manipulator (67) or the second picking manipulator (68). Step 4), the inner wall of the workpiece (10) is oiled by the inner wall oiling unit (5); when oiling, the workpiece (10) is first rotated to a direction parallel to the extension rod (57) by the first material taking manipulator (67) or the second material taking manipulator (68), and the end of the workpiece (10) with the cone structure (101) is directly facing the oil spray head (58); the extension rod (57) is first driven by the driving mechanism to extend into the workpiece (10), and then the extension rod (57) is driven to withdraw from the workpiece (10); in the process of the extension rod (57) extending into the workpiece (10), the oil spray head (58) sprays oil onto the inner wall of the workpiece (10), and in the process of the extension rod (57) withdrawing, the oiling ring (59) evenly spreads the oil on the inner wall; After the oiling is completed, the workpiece (10) is transferred to the first bending unit (7) by the first material taking robot (67) or the workpiece (10) is transferred to the second bending unit by the second material taking robot (68); Step 5), the workpiece (10) is bent by the first bending unit (7) or the second bending unit; during the bending process, the workpiece (10) is first sent between the fixed clamping die (728) and the movable clamping die (75) and between the fixed guide die (73) and the movable guide die (74), and the cone structure (101) on the workpiece (10) faces the front inserting core rod (713); the workpiece (10) is pre-clamped by the movable guide die (74), and the front inserting core rod (713) is driven to move to a position facing the workpiece (10) by the displacement cylinder (715), and then the front inserting core rod (713) is inserted In the workpiece (10), the outer conical surface (727) on the front insert core rod (713) contacts the conical mouth structure (101) on the workpiece (10), and the workpiece (10) is pushed to move by the front insert core rod (713) until the conical mouth structure (101) on the workpiece (10) contacts the inner conical surface (729) on the fixed clamping die (728), and then the workpiece (10) is clamped by the fixed guide die (73) and the movable guide die (74); after the fixed guide die (73) and the movable guide die (74) clamp the workpiece (10) in place, the front insert core rod (713) withdraws from the workpiece (10); The rear core rod (77) is inserted from the end of the workpiece (10) away from the conical structure (101). After the rear core rod (77) is inserted into place, the movable clamping die (75) and the fixed clamping die (728) clamp the conical end of the workpiece (10); at the same time, the boosting cylinder (718) drives one end of the boosting sleeve (717) to press against one end of the workpiece (10); then the swing arm component (78) rotates together with the circular die (72), and the workpiece (10) is closely attached to the circular die (72) and bent until the workpiece (10) is bent to a desired angle; during the bending process of the workpiece (10), a fixed thrust is applied to one end of the workpiece (10) through the boosting sleeve (717) to reduce the resistance of the workpiece (10) when bending; After the bending of the workpiece (10) is completed, the front mandrel (713) is inserted into the workpiece (10) again. Then, the movable clamping die (75) and the fixed clamping die (728) release the workpiece (10). The transposition seat (710) is driven to move horizontally by the transposition oil cylinder (715), so that the workpiece (10) is horizontally separated from the circular die (72). Finally, the first unloading manipulator (69) or the second unloading manipulator (610) grabs the workpiece (10) and transfers the workpiece (10) to the unloading conveyor line (9).

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