Thin-walled steel pipe straightening and flaring integrated machine

Abstract

The application relates to the technical field of steel pipe processing, in particular to a thin-wall steel pipe straightening and flaring integrated machine, a base and a moving seat slidingly arranged on the base; the moving seat drives a straightening ring to move along the base to straighten a steel pipe to be straightened; a flaring mechanism can be sleeved into the steel pipe in the straightening ring; a fixed plate is arranged in correspondence with the flaring mechanism; a rotating plate is hinged on the fixed plate; a fixed rod is movably connected to the rotating plate; one side of the fixed rod can be inserted into the steel pipe to be straightened to limit the steel pipe to be straightened; and a rotating disc is used for driving a plurality of first flaring plates to open to flare the steel pipe. The application can gradually straighten and flare the steel pipe, so that the fixing operation of the steel pipe can be completed only once, the operation complexity of the steel pipe straightening and flaring processing is reduced, and the processing speed of the steel pipe can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of steel pipe processing technology, specifically to an integrated machine for straightening and flaring thin-walled steel pipes. Background Technology

[0002] Steel pipes are an indispensable part of industry, serving as supports and fixation tools. They are used in machinery such as fitness equipment and weeding equipment. Before being put into use, steel pipes need to undergo specific processing, including straightening and flaring the ends of the pipes to connect to external equipment.

[0003] Straightening and flaring of steel pipes are two operations that can interfere with each other. The change in inner and outer diameter caused by flaring will affect the straightening standard of the steel pipe, making it difficult for the equipment to determine whether the steel pipe has been straightened to a horizontal state. The straightening process requires overall restriction of the outer wall of the steel pipe, which will limit the outer diameter of the steel pipe, thus making the flaring operation impossible. For the above reasons, existing flaring and straightening are carried out separately: either flaring first and then straightening, or straightening first and then flaring.

[0004] While separating straightening and flaring ensures that both processing steps of the steel pipe can proceed smoothly, the process of changing processing equipment and fixing the steel pipe will consume a lot of time. Although it will not consume too much labor, such operation will undoubtedly reduce the processing speed of the steel pipe. When mass production is carried out, the overall production speed of the steel pipe will be significantly reduced.

[0005] Even if the process is carried out separately, if the straightening work is done first, the subsequent flaring process often applies a force along the axial direction of the steel pipe, which will inevitably affect the straightness of the steel pipe again. If the flaring work is done first, the subsequent straightening requires clamping both ends of the steel pipe. The flared ends often cannot meet the assembly requirements. For thin-walled steel pipes, the effect of this interference is even greater. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, this application provides an integrated machine for straightening and flaring thin-walled steel pipes, which can effectively avoid the mutual interference between the straightening and flaring processes.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] This application provides an integrated machine for straightening and flaring thin-walled steel pipes, including:

[0009] Base

[0010] A movable seat is slidably disposed on one side of the base, and a straightening ring is fixedly disposed on the movable seat. The straightening ring can be sleeved on the outside of the steel pipe to be straightened. Under external drive, the movable seat can drive the straightening ring to move along the base to straighten the steel pipe to be straightened.

[0011] A flaring mechanism is provided on the top side of the base. The flaring mechanism can be fitted into the inner diameter of the steel pipe inside the straightening ring. The flaring mechanism includes a plurality of first flaring plates. The outer walls of the plurality of first flaring plates have an arc-shaped structure and can be squeezed and fitted with the inner wall of the steel pipe.

[0012] A fixing plate is fixedly installed on the top side of the base, corresponding to the flaring mechanism. A rotating plate is hinged to the fixing plate, and a fixing rod is movably connected to the rotating plate. One side of the fixing rod can be inserted into the inner diameter hole of the steel pipe to be straightened to restrict the steel pipe to be straightened.

[0013] A turntable is disposed on one side of a plurality of first flaring plates, and a spiral block is fixedly disposed on the side of the turntable near the first flaring plate. An arc groove is disposed on the first flaring plate corresponding to the spiral block. The plurality of first flaring plates are spirally disposed on the spiral block through the arc groove, so that when the turntable rotates under the drive of the drive mechanism, it drives the plurality of first flaring plates to open and flare the steel pipe.

[0014] As an optional embodiment of this application, the driving mechanism includes a threaded rod rotatably disposed on one side of the straightening ring, and one end of the threaded rod is rotatably disposed through the fixing plate;

[0015] The straightening ring has a movable block on the side near the threaded rod, and a connecting groove is provided on the movable block on the side opposite to the threaded rod. The connecting groove is threadedly connected to the threaded rod, so that when the threaded rod rotates, the movable block can move along the threaded rod to drive the straightening ring to move along the base to straighten the steel pipe.

[0016] Preferably, the movable block is slidably disposed on one side of the straightening ring via a connecting rod, and

[0017] A slot is provided on one side of the straightening ring, and a compression block is slidably disposed within the slot. A compression slot is provided on the movable block corresponding to the compression block.

[0018] The extrusion block is elastically connected to the block groove by multiple first compression springs. Under elastic force, the extrusion block is pressed against the extrusion groove, causing the movable block to adhere to the threaded rod.

[0019] As a preferred embodiment of this application, a magnet is fixedly provided inside the straightening ring corresponding to the connecting rod. The connecting rod can be attracted by the magnet, so that when the extrusion block is disengaged from the extrusion groove, the movable block moves toward the straightening ring, causing the movable block to disengage from the threaded rod.

[0020] Preferably, a return spring is fixedly provided inside the straightening ring corresponding to the connecting rod. The return spring can pull the movable block to move toward the straightening ring. When the extrusion block disengages from the extrusion groove, the movable block moves toward the straightening ring, causing the movable block to disengage from the threaded rod.

[0021] As one embodiment, the extrusion block is provided with a limiting plate on the side away from the movable block, and the straightening ring is provided with a plate groove that slides with the limiting plate. The limiting plate is elastically connected to the plate groove by an extrusion spring.

[0022] The outer walls on both sides of the limiting plate are inclined structures near the movable block.

[0023] The extrusion block has a limiting groove that is inserted into one end of the limiting plate, and the end of the limiting plate near the fixing plate extends out of the groove to the outside.

[0024] The fixed plate is fixed with a vertical plate that is pressed and engaged with both the limiting plate and the pressing block.

[0025] Preferably, the flaring mechanism further includes a second flaring plate, and both the second flaring plate and the inner wall of the first flaring plate are fixedly provided with a fixing seat.

[0026] Each of the fixed seats is connected to a plug at the end away from the turntable. Each of the multiple fixed seats on the second flared plate has a slot adapted to the plug, and the plug can be inserted into the corresponding slot.

[0027] A better solution is to provide two telescopic rods between the two fixing seats on the adjacent first and second flared plates, and

[0028] Both ends of the telescopic rod are spherical structures, and two connecting plates are rotatably connected to both ends of the telescopic rod. The connecting plates are provided with spherical recesses that rotatably cooperate with the ends of the telescopic rod.

[0029] The fixed base has a fixing groove on the side opposite to the turntable, which is inserted into a connecting plate on the side opposite to the turntable. The connecting plate is detachably connected to the fixing groove.

[0030] A support spring is sleeved on the outside of the extension end of the telescopic rod.

[0031] Preferably, a collar is rotatably fitted around the turntable, and a fixing ring is rotatably fitted around the collar, the fixing ring being connected and fixed to the base;

[0032] The inner wall of the fixed ring is evenly provided with multiple circular grooves, and the inner wall of the circular groove is elastically connected to a locking block by a second compression spring. The outer wall of the collar is provided with a locking groove that engages with the locking block. Both the locking block and the locking groove are hemispherical structures.

[0033] The collar is coaxially fixed to the outer shell at one end near the fixed seat, and the fixed seat is slidably connected to the outer shell on the side near the outer shell.

[0034] As one alternative, the drive mechanism also includes a motor fixedly mounted on the top of the base, with the output end of the motor coaxially and fixedly connected to the threaded rod;

[0035] A disc is sleeved on the threaded rod. Multiple inner cavities are evenly opened on the outer wall of the disc. A snap-fit ​​block is elastically connected to the inner wall of the inner cavity by a third compression spring.

[0036] A rotating ring is fitted around the outside of the threaded rod relative to the position between the disc and the motor. The rotating ring has a T-shaped structure and its inner wall does not contact the outer wall of the threaded rod. The disc is inserted into the rotating ring. The inner wall of the rotating ring has a snap-fit ​​groove that engages with the snap-fit ​​block.

[0037] Preferably, a first toothed column is fixedly provided on the outer wall of the rotating ring near the end of the motor;

[0038] A plurality of second toothed columns are uniformly fixedly arranged on the outer wall of the rotating ring away from the motor, and the plurality of second toothed columns partially cover the outer wall of the rotating ring.

[0039] Gears are fitted onto both the end of the collar away from the fixed base and the end of the turntable away from the fixed base. The gear on the collar meshes with the second toothed column, and the gear on the turntable meshes with the first toothed column.

[0040] Optionally, a sliding seat is rotatably connected to one side of the rotating ring, and the sliding seat is slidably connected to the base;

[0041] A connecting rod is fixedly provided at the lower end of the side wall near the rotating ring of the sliding seat. The connecting rod has an L-shaped structure and is slidably connected to the base.

[0042] The base has a guide groove at its top, and the movable seat is slidably disposed in the guide groove. The end of the connecting rod near the fixed plate extends into the guide groove and is fixedly fitted with a slider that slides in cooperation with the guide groove.

[0043] The slider is pressed against the lower end of the movable seat.

[0044] As one of the preferred solutions, the rotating plate has a threaded hole in the middle, and both the fixing rod and the threaded hole are T-shaped structures. The outer wall of the fixing rod away from the moving seat has an external thread that is threaded to the threaded hole.

[0045] A pull rod is fixedly provided at the end of the fixed rod away from the movable seat, and two tension springs are provided opposite to each other between the side wall of the rotating plate and the side wall of the fixed plate.

[0046] Both the rotating plate and the fixed plate have circular holes at positions opposite to the tension springs, and the two ends of the tension springs are respectively connected and fixed to the inner walls of the circular holes on both sides.

[0047] The technical solution provided in this application has the following advantages compared with the known public technology:

[0048] (1) This application is equipped with a straightening ring and a flaring mechanism. Through the driving mechanism to drive the two and the mutual cooperation between the two, the steel pipe can be straightened and flared step by step. The steel pipe can be fixed in one operation to complete the two processes, which reduces the complexity of the steel pipe straightening and flaring process, effectively improves the processing speed of the steel pipe, and reduces the mutual influence between the straightening and flaring processes.

[0049] (2) The drive mechanism provided in this application can drive the device to perform continuous processing of steel pipes by first straightening and then widening. The entire process does not require much intervention from the staff, which greatly reduces the difficulty of operating the device and makes the device more convenient.

[0050] (3) This application is equipped with a turntable, a fixed seat and a telescopic rod. The size of the flare can be flexibly changed by the independent rotation of the turntable. Through the interconnection of multiple fixed seats and telescopic rods, the flare length can be effectively increased. The telescopic rod can ensure the stability of the flare structure and prevent damage from the reaction force of the steel pipe. This makes the device more flexible and versatile in the flare processing of steel pipes. The design is ingenious. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a schematic diagram of the overall structure of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0053] Figure 2This is a schematic diagram of one side of the fixing plate structure of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0054] Figure 3 This is a schematic diagram of the straightening ring structure of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0055] Figure 4 This is a schematic cross-sectional view of the straightening ring structure of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0056] Figure 5 This is a schematic diagram of the drive mechanism structure of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0057] Figure 6 This is a schematic diagram of the external structure of the threaded rod of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0058] Figure 7 This is a schematic diagram of the rotating structure of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0059] Figure 8 This is a schematic diagram of the collar and turntable structure of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0060] Figure 9 This is a schematic diagram of the collar and fixing ring structure of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0061] Figure 10 This is an exploded structural diagram of the first and second flaring plates of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application;

[0062] Figure 11 This is a schematic diagram of the fixed base structure of the thin-walled steel pipe straightening and flaring integrated machine described in the embodiments of this application.

[0063] The labels in the diagram represent:

[0064] 1. Base; 101. Guide groove; 11. Sliding seat; 12. Connecting rod; 121. Slider;

[0065] 2. Portable seat;

[0066] 3. Straightening ring; 301. Plate groove; 302. Block groove; 31. Movable block; 311. Connecting groove; 312. Extrusion groove; 32. Connecting rod; 33. Extrusion block; 331. Limiting groove; 34. First compression spring; 35. Limiting plate; 36. Extrusion spring;

[0067] 4. Flaring mechanism; 41. First flaring plate; 411. Arc groove; 42. Second flaring plate; 43. Fixing base; 431. Fixing groove; 432. Screw; 433. Screw hole; 434. Slot; 44. Insert block; 45. Telescopic rod; 451. Support spring; 46. Connecting plate;

[0068] 5. Fixing plate; 51. Rotating plate; 511. Round hole; 512. Threaded hole; 52. Fixing rod; 521. External thread; 53. Vertical plate; 54. Pull rod; 55. Tension spring;

[0069] 6. Turntable; 61. Spiral block;

[0070] 7. Drive mechanism; 71. Threaded rod; 72. Electric motor; 73. Disc; 731. Inner cavity; 74. Third compression spring; 75. Snap-fit ​​block; 76. Rotary ring; 761. Snap-fit ​​groove; 762. First toothed post; 763. Second toothed post;

[0071] 8. Collar; 801. Slot; 81. Housing; 82. Gear;

[0072] 9. Retaining ring; 901. Circular groove; 91. Second compression spring; 92. Locking block. Detailed Implementation

[0073] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0074] Thin-walled steel pipe straightening and flaring integrated machine, for reference Figure 1-11The system includes a base 1, a movable seat 2 slidably connected to one side of the top surface of the base 1, the lower part of the movable seat 2 having a T-shaped structure, a guide groove 101 slidably engaging with the movable seat 2 on the base 1, a fixed plate 5 fixedly mounted on the other side of the top surface of the base 1, a rotating plate 51 hinged to the fixed plate 5, a fixed rod 52 movably connected to the rotating plate 51, the end of the fixed rod 52 being inserted into the interior of a steel pipe, a threaded hole 512 in the middle of the rotating plate 51, both the fixed rod 52 and the threaded hole 512 having a T-shaped structure, and the outer wall of the fixed rod 52... An external thread 521 is provided at the end away from the movable seat 2, which is threaded to the threaded hole 512. A pull rod 54 is fixed at the end of the fixed rod 52 away from the movable seat 2. Two tension springs 55 are symmetrically provided between the side wall of the rotating plate 51 and the side wall of the fixed plate 5. A round hole 511 is provided on both the rotating plate 51 and the fixed plate 5 at the position opposite to the tension spring 55. The two ends of the tension spring 55 are respectively connected and fixed to the inner wall of the round hole 511 on both sides. A straightening ring 3 is fixed on the movable seat 2. A flaring mechanism 4 is provided on the inner side of the straightening ring 3.

[0075] Before flaring and straightening, the steel pipe to be flared and straightened is placed first. The rotating plate 51 is turned open, and then the steel pipe to be processed is inserted into the straightening ring 3 from one side of the rotating plate 51. At the same time, the flaring mechanism 4 is also inserted into the steel pipe. Then, the rotating plate 51 is released, allowing it to return to its original position under the action of the tension spring 55. Then, the fixing rod 52 is rotated using the pull rod 54, so that the fixing rod 52 moves towards the steel pipe under the threaded connection between the external thread 521 and the threaded hole 512, thereby adapting to the length of the steel pipe. Its larger end is adapted to the inner diameter of the steel pipe. When its larger end is inserted into the steel pipe, the placement of the steel pipe is completed.

[0076] A threaded rod 71 is provided on one side of the straightening ring 3. The end of the threaded rod 71 near the fixed plate 5 is rotatably connected to the fixed plate 5. A movable block 31 is slidably connected on the side of the straightening ring 3 opposite to the threaded rod 71. A connecting groove 311 is provided on the side of the movable block 31 opposite to the threaded rod 71. The connecting groove 311 is a semi-cylindrical structure with multiple curved recesses evenly arranged on the inner wall. The curved recesses on the inner wall of the connecting groove 311 are threadedly connected to the threaded rod 71.

[0077] The straightening ring 3 moves under the drive of the threaded rod 71. The path of the straightening ring 3 is the direction of the sliding fit between the moving seat 2 and the guide groove 101, which is also the direction in which the steel pipe is to be straightened. At the same time, the straightening ring 3 is a rigid structure, so the straightening ring 3 will straighten the steel pipe during its movement. The bent part of the steel pipe will be straightened to a position coaxial with the straightening ring 3 after being squeezed. When the position of the moving seat 2 moves to the end of the guide groove 101 that is closest to the fixed plate 5, the straightening of the steel pipe is completed.

[0078] The movable block 31 is slidably disposed on one side of the straightening ring 3 via the connecting rod 32. In some embodiments, a magnet is fixedly disposed inside the straightening ring 3 corresponding to the connecting rod 32. The connecting rod 32 can be attracted by the magnet, so that when the extrusion block 33 is disengaged from the extrusion groove 312, the movable block 31 moves toward the straightening ring 3, causing the movable block 31 to disengage from the threaded rod 71.

[0079] In another embodiment, a return spring is fixedly provided inside the straightening ring 3 corresponding to the connecting rod 32. The return spring can pull the movable block 31 to move toward the straightening ring 3. When the extrusion block 33 is disengaged from the extrusion groove 312, the movable block 31 moves toward the straightening ring 3, causing the movable block 31 to disengage from the threaded rod 71.

[0080] The movable block 31 has a compression groove 312 on one side wall near the straightening ring 3. Inside the compression groove 312 is a compression block 33 that comes into compression contact with it. Both the compression block 33 and the compression groove 312 are right-angled trapezoidal column structures with their inclined surfaces facing the fixed plate 5. The straightening ring 3 has a block groove 302 on its side wall that slides with the compression block 33. The compression block 33 is elastically connected to the block groove 302 by multiple first compression springs 34. A limiting plate 35 is provided on the side of the compression block 33 away from the movable block 31. The straightening ring 3 has... A plate groove 301 is provided that slides with the limiting plate 35. The limiting plate 35 is elastically connected to the plate groove 301 by two compression springs 36. The outer walls on both sides of the limiting plate 35 are inclined at the end near the movable block 31. A limiting groove 331 is provided on the compression block 33 that is inserted and engaged with the end of the limiting plate 35 away from the fixed plate 5. The end of the limiting plate 35 near the fixed plate 5 extends out of the plate groove 301 to the outside. A vertical plate 53 is fixed on the fixed plate 5 that is in compression engagement with both the limiting plate 35 and the compression block 33.

[0081] When the movable seat 2 moves to the end closest to the fixed plate 5, the vertical plate 53 on the fixed plate 5 will exert a squeezing effect on the limiting plate 35 and the squeezing block 33 near the side wall of the fixed plate 5. As a result, the limiting plate 35 will be pressed into the plate groove 301 first. Then, the squeezing block 33, which is no longer fixed by the limiting plate 35, will move away from the fixed plate 5. The vertical plate 53 will pass the position of the limiting plate 35 and squeeze the squeezing block 33. The squeezing block 33 will then be pushed away from the fixed plate 5. Then, the squeezing support effect of the squeezing block 33 on the squeezing groove 312 will also be lost. The movable block 31 will move towards the straightening ring 3, and the connecting groove 311 will also disengage from the threaded rod 71 at the same time. In this way, the movable seat 2 will stop moving.

[0082] The flaring mechanism 4 includes multiple first flaring plates 41 arranged in a ring with equal spacing. The outer wall of each first flaring plate 41 has an arc-shaped structure and is pressed into the inner wall of the steel pipe. A turntable 6 is provided on one side of each of the multiple first flaring plates 41, and the first flaring plates 41 are slidably connected to the turntable 6. The flaring mechanism 4 also includes a second flaring plate 42. The inner walls of both the second flaring plate 42 and the first flaring plate 41 are fixedly provided with fixing seats 43. Each fixing seat 43 is connected to an insertion block 44 at the end away from the turntable 6. The multiple fixing seats 43 on the side away from the turntable 6 are provided with slots 434 that engage with the insertion blocks 44. A spiral block 61 is fixedly provided on the side wall of the turntable 6 near the fixing seat 43. Multiple arc grooves 411 are evenly provided on the side wall of the fixed seat 43; the arc grooves 411 are engaged with the spiral block 61; a collar 8 is rotatably sleeved on the outside of the turntable 6; a fixed ring 9 is rotatably sleeved on the outside of the collar 8; the fixed ring 9 is connected and fixed to the base 1; multiple circular grooves 901 are evenly provided on the inner wall of the fixed ring 9; a locking block 92 is elastically connected to the inner wall of the circular groove 901 through a second compression spring 91; a locking groove 801 is provided on the outer wall of the collar 8 to engage with the locking block 92; both the locking block 92 and the locking groove 801 are hemispherical structures; a housing 81 is coaxially fixed on one end of the collar 8 near the fixed seat 43; the fixed seat 43 near the housing 81 is slidably connected to the housing 81.

[0083] Two telescopic rods 45 are symmetrically arranged between the two adjacent fixed seats 43 on both sides. Both ends of the telescopic rods 45 are spherical structures. Two connecting plates 46 are symmetrically rotatably connected to the ends of the telescopic rods 45. The connecting plates 46 are provided with spherical recesses that rotatably cooperate with the ends of the telescopic rods 45. The fixed seat 43 is provided with a fixing groove 431 on the side closer to the turntable 6, which is inserted into the connecting plate 46 on the side closer to the turntable 6. Two screws 432 are symmetrically arranged on the connecting plate 46. The connecting plate 46 is provided with screw holes 433 that are threadedly connected to the screws 432 on the inner wall of the second flared plate 42 and the inner wall of the fixing groove 431. A support spring 451 is sleeved on the outside of the extension end of the telescopic rod 45.

[0084] A drive mechanism 7 is provided on the front side of the turntable 6. The drive mechanism 7 causes the movable seat 2 to move away from the turntable 6. The drive mechanism 7 includes a motor 72, which is connected and fixed to the base 1. The output end of the motor 72 is coaxially and fixedly connected to the threaded rod 71. A disc 73 is sleeved on the threaded rod 71. Multiple inner cavities 731 are evenly opened on the outer wall of the disc 73. A snap-fit ​​block 75 is elastically connected to the inner wall of the inner cavity 731 through a third compression spring 74. The snap-fit ​​block 75 has an isosceles trapezoidal column structure. A rotating ring 76 is sleeved on the outside of the threaded rod 71 at a position between the disc 73 and the motor 72. The rotating ring 76 has a T-shaped structure and its inner wall does not contact the outer wall of the threaded rod 71. The disc 73 and the rotating ring 76 are inserted and engaged. The inner wall of the rotating ring 76 has a snap-fit ​​groove 761 that engages with the snap-fit ​​block 75.

[0085] A first toothed column 762 is fixedly provided on the outer circumference of the rotating ring 76 near the motor 72. A plurality of second toothed columns 763 are fixedly provided on the outer circumference of the rotating ring 76 away from the motor 72 in a three-quarter arc shape with equal spacing. Gears 82 are sleeved on the end of the collar 8 away from the fixed seat 43 and the end of the turntable 6 away from the fixed seat 43. The gears 82 on the collar 8 are meshed with the second toothed columns 763. The gears 82 on the turntable 6 are meshed with the first toothed columns 762. A sliding seat 11 is rotatably connected to the rear of the rotating ring 76. The sliding seat 11 is slidably connected to the base 1. A connecting rod 12 is fixedly provided on the lower end of the side wall of the sliding seat 11 near the rotating ring 76. The connecting rod 12 has an L-shaped structure and is slidably connected to the base 1. The end of the connecting rod 12 near the fixed plate 5 extends into the guide groove 101 and is fixedly provided with a slider 121 that slides with the guide groove 101. The slider 121 is pressed with the lower end of the moving seat 2.

[0086] Before starting the flaring and straightening operations of the thin-walled steel pipe in the embodiment of this application, the operator needs to return all the structures on the device to their correct positions and ensure they meet the required standards. Figure 1 In the state shown, when the flare length is short, the first flare plate 41 alone can meet the flare requirements, so there is no need to install the second flare plate 42. If the flare length is long, a sufficient number of second flare plates 42 are used according to the length requirement of the flare. With the insertion and cooperation of the insert block 445 and the slot 434, the two corresponding fixing seats 43 on the second flare plate 42 and the first flare plate 41 can be initially connected and fixed to each other. Then, the telescopic rod 45 is connected to the two adjacent fixing seats 43 through the threaded connection relationship between the screw 432 and the screw hole 433. Because the telescopic rod 45 can not only extend and retract, but its end is also connected to the spherical groove on the connecting plate 46 through the spherical structure. The swivel connection means that the connection between the telescopic rod 45 and the connecting plate 46 is equivalent to a universal swivel connection, which makes it easier for the operator to fix it between the two fixed seats 43. This fixation strengthens the connection between the fixed seat 43 near the turntable 6 and the second flaring plate 42, and the support spring 451 strengthens the reaction force that the second flaring plate 42 can withstand, making the flaring operation easier and less likely to damage the second flaring plate 42. The operator can also connect multiple second flaring plates 42 to this device through the same connection, thereby increasing the degree of flaring of the steel pipe and making the device more flexible to use.

[0087] After the device is set up, the rotating plate 51 can be turned off first, and then the steel pipe to be processed can be inserted into the straightening ring 3 from one side of the rotating plate 51. At the same time, the flaring mechanism 4 will also be inserted into the steel pipe. After the steel pipe is inserted, the rotating plate 51 is released so that it returns to its original position under the action of the tension spring 55. Then, the fixing rod 52 is rotated by the pull rod 54, so that the fixing rod 52 moves towards the steel pipe under the threaded connection between the external thread 521 and the threaded hole 512, thereby adapting to the length of the steel pipe. Its larger end is adapted to the inner diameter of the steel pipe. When its larger end is inserted into the steel pipe, the steel pipe is fixed to the device. This fixing method facilitates the device to perform straightening and flaring operations on the steel pipe.

[0088] After the steel pipe is fixed, the motor 72 drives the threaded rod 71 to rotate. The rotation of the threaded rod 71 will drive the movable block 31 to move through the connecting groove 311. The movement of the movable block 31 will drive the straightening ring 3, which is slidably connected to it, to move. The path of the straightening ring 3 is the direction of the sliding engagement between the moving seat 2 and the guide groove 101. This direction is also parallel to the fixed steel pipe. At the same time, the straightening ring 3 is a rigid structure, so the straightening ring 3 will straighten the steel pipe during movement. The bent part of the steel pipe will be straightened to a position coaxial with the straightening ring 3 after being squeezed. When the position of the moving seat 2 moves to the end of the guide groove 101 that is closest to the fixed plate 5, the straightening of the steel pipe is completed.

[0089] When the movable seat 2 moves to the end closest to the fixed plate 5, the vertical plate 53 on the fixed plate 5 will exert a squeezing effect on the limiting plate 35 and the squeezing block 33 near the side wall of the fixed plate 5. As a result, the limiting plate 35 will be pressed into the plate groove 301 first. Then, the squeezing block 33, which is no longer fixed by the limiting plate 35, can move away from the fixed plate 5. At this time, the vertical plate 53 will pass the position of the limiting plate 35 and squeeze the squeezing block 33. The squeezing block 33 will then be pushed away from the fixed plate 5. Then, the squeezing block 33 will lose its squeezing support effect on the squeezing groove 312. The movable block 31 will move towards the straightening ring 3. The connecting groove 311 will also disengage from the threaded rod 71 at the same time. In this way, the movable seat 2 will stop moving. As the threaded rod 71 continues to rotate, the movable block 31 and the movable seat 2 will also be unable to move.

[0090] Before the movable seat 2 moves to the position closest to the fixed plate 5 and stops moving, the lower end of the movable seat 2 has already squeezed the slider 121. The slider 121 will then drive the sliding seat 11 to move towards the fixed plate 5 through the connecting rod 12. The rotating ring 76 connected to the sliding seat 11 will then be sleeved on the outside of the disc 73. At the same time, under the pressure of the locking block 75 at the edge of the opening end of the rotating ring 76, the locking block 75 will first retract into the inner cavity 731, and then pop out under the action of the third compression spring 74 and engage with the locking groove 761. Because the disc 73 is coaxially fixedly connected to the threaded rod 71, when the threaded rod 71 continues to rotate, it will squeeze the vertical outer wall of the locking block 75 through the vertical outer wall of the locking groove 761, causing the rotating ring 76 and the threaded rod 71 to rotate synchronously.

[0091] While the rotating ring 76 is coaxially and fixedly connected to the disc 73, the first toothed column 762 and the second toothed column 763 on its outer wall will respectively mesh with the corresponding gear 82. After meshing, the second toothed column 763 will push the gear 82 on the collar 8, causing the collar 8 to rotate. The collar 8 will then drive the multiple fixed seats 43 on it to rotate through the outer shell 81. Since the turntable 6 has no structure to restrict its rotation, it will also rotate. The second toothed column 763 only covers three-quarters of the area of ​​the outer wall of the rotating ring 76. When the neutral position corresponds to the gear 82, the gear 82 can no longer rotate.

[0092] It should be noted that in this device, the number of teeth on the gear 82 on the collar 8 is the same as the number of locking blocks 92. Therefore, with a fixed number of second toothed columns 763, the rotation angle of each gear 82 is also fixed. Furthermore, neither the flaring nor straightening operations require high speeds. Thus, the motor 72 in this device maintains a low, uniform rotation speed. Under these conditions, when the collar 8 is in the neutral zone of the second toothed column 763 on the corresponding rotating ring 76, the locking block 92 is pushed out by the second compression spring 91 and locked into the slot 801. The collar 8 can be limited, and then the first tooth 762, which corresponds to the middle position of the gap area of ​​the second tooth 763, will move the gear 82 on the turntable 6. This will cause the spiral block 61 to move the multiple fixed seats 43 outward by squeezing the arc groove 411. Then, the first flaring plate 41 and the second flaring plate 42 will squeeze the inner wall of the steel pipe to complete the flaring operation. After the first tooth 762 moves the turntable 6 multiple times, and with the rotation of the collar 8, the opening end of the steel pipe can be expanded to a suitable inner diameter.

[0093] In addition, because both the locking block 92 and the locking groove 801 are hemispherical structures, they can easily disengage when subjected to a hard external force such as the second toothed column 763 turning the gear 82. On the other hand, due to the weight of the collar 8 itself, and the fact that the friction between the collar 8 and the rotating connection between the collar 8 and the turntable 6 is greatly reduced by adding lubricating oil, coupled with the restriction of the locking block 92 and the locking groove 801, the collar 8 cannot be driven in the opposite direction when the turntable 6 is rotated by force alone. Furthermore, since the turntable 6 has no other connection except with the fixed seat 43 and the collar 8, the resistance encountered by the collar 8 when it drives the turntable 6 to rotate through the fixed seat 43 is extremely small.

[0094] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this application.

Claims

1. A thin-walled steel pipe straightening and flaring integrated machine, characterized in that, include: The base and the movable seat are slidably mounted on the base. A straightening ring is fixedly mounted on the movable seat. The movable seat drives the straightening ring to move along the base to straighten the steel pipe to be straightened. A flaring mechanism is installed on the base and can be fitted into the steel pipe inside the straightening ring. The flaring mechanism includes multiple first flaring plates, the outer wall of which is arc-shaped to press against the inner wall of the steel pipe. A fixed plate is provided in opposition to the flaring mechanism; a rotating plate is hinged to the fixed plate, and a fixed rod is movably connected to the rotating plate; one side of the fixed rod can be inserted into the steel pipe to be straightened to restrict the steel pipe to be straightened. A turntable is positioned on one side of the first flaring plate, and a spiral block is provided on the side of the turntable closest to the first flaring plate. The spiral block is spirally mounted on the first flaring plate. The turntable is used to drive multiple first flaring plates to open and flare the steel pipe. It also includes a drive mechanism; the drive mechanism includes a threaded rod rotatably disposed on one side of the straightening ring, and one end of the threaded rod rotatably passes through the fixed plate; The straightening ring has a movable block on the side near the threaded rod, and a connecting groove is provided on the movable block on the side opposite to the threaded rod. The connecting groove is threadedly connected to the threaded rod, so that when the threaded rod rotates, the movable block can move along the threaded rod to drive the straightening ring to move along the base to straighten the steel pipe. The movable block is slidably mounted on one side of the straightening ring via a connecting rod, and A slot is provided on one side of the straightening ring, and a compression block is slidably disposed within the slot. A compression slot is provided on the movable block corresponding to the compression block. The extrusion block is elastically connected to the block groove by multiple first compression springs. Under elastic force, the extrusion block is pressed against the extrusion groove, causing the movable block to adhere to the threaded rod.

2. The thin-walled steel pipe straightening and flaring integrated machine according to claim 1, characterized in that, A magnet is fixedly installed inside the straightening ring corresponding to the connecting rod. The connecting rod can be attracted by the magnet, so that when the extrusion block is disengaged from the extrusion groove, the movable block moves toward the straightening ring, causing the movable block to disengage from the threaded rod.

3. The thin-walled steel pipe straightening and flaring integrated machine according to claim 2, characterized in that, A return spring is fixedly installed inside the straightening ring corresponding to the connecting rod. The return spring can pull the movable block to move toward the straightening ring. When the extrusion block is disengaged from the extrusion groove, the movable block moves toward the straightening ring, causing the movable block to disengage from the threaded rod.

4. The thin-walled steel pipe straightening and flaring integrated machine according to any one of claims 2 or 3, characterized in that, The extrusion block is provided with a limiting plate on the side away from the movable block, and the straightening ring is provided with a plate groove that slides with the limiting plate. The limiting plate is elastically connected to the plate groove by an extrusion spring. The outer walls on both sides of the limiting plate are inclined structures near the movable block. The extrusion block has a limiting groove that is inserted into one end of the limiting plate, and the end of the limiting plate near the fixing plate extends out of the groove to the outside. The fixed plate is fixed with a vertical plate that is pressed and engaged with both the limiting plate and the pressing block.

5. The thin-walled steel pipe straightening and flaring integrated machine according to claim 1, characterized in that, The flaring mechanism further includes a second flaring plate, and both the second flaring plate and the inner wall of the first flaring plate are fixedly provided with a fixing seat. Each of the fixed seats is connected to a plug at the end away from the turntable. Each of the multiple fixed seats on the second flared plate has a slot adapted to the plug, and the plug can be inserted into the corresponding slot.

6. The thin-walled steel pipe straightening and flaring integrated machine according to claim 5, characterized in that, Two telescopic rods are provided between the two fixed seats on the adjacent first flared plate and second flared plate, and Both ends of the telescopic rod are spherical structures, and two connecting plates are rotatably connected to both ends of the telescopic rod. The connecting plates are provided with spherical recesses that rotatably cooperate with the ends of the telescopic rod. The fixed base has a fixing groove on the side opposite to the turntable, which is inserted into a connecting plate on the side opposite to the turntable. The connecting plate is detachably connected to the fixing groove. A support spring is sleeved on the outside of the extension end of the telescopic rod.

7. The thin-walled steel pipe straightening and flaring integrated machine according to claim 6, characterized in that, The turntable is fitted with a collar that rotates around it, and a fixed ring is fitted with a fixed ring that rotates around it. The fixed ring is connected and fixed to the base. The inner wall of the fixed ring is evenly provided with multiple circular grooves, and the inner wall of the circular groove is elastically connected to a locking block by a second compression spring. The outer wall of the collar is provided with a locking groove that engages with the locking block. Both the locking block and the locking groove are hemispherical structures. The collar is coaxially fixed to the outer shell at one end near the fixed seat, and the fixed seat is slidably connected to the outer shell on the side near the outer shell.

8. The thin-walled steel pipe straightening and flaring integrated machine according to claim 7, characterized in that, The drive mechanism also includes a motor fixedly mounted on the top of the base, and the output end of the motor is coaxially and fixedly connected to the threaded rod; A disc is sleeved on the threaded rod. Multiple inner cavities are evenly opened on the outer wall of the disc. A snap-fit ​​block is elastically connected to the inner wall of the inner cavity by a third compression spring. A rotating ring is fitted around the outside of the threaded rod relative to the position between the disc and the motor. The rotating ring has a T-shaped structure and its inner wall does not contact the outer wall of the threaded rod. The disc is inserted into the rotating ring. The inner wall of the rotating ring has a snap-fit ​​groove that engages with the snap-fit ​​block.

9. The thin-walled steel pipe straightening and flaring integrated machine according to claim 8, characterized in that, A first toothed column is fixedly provided on the outer wall of the rotating ring near the end of the motor. A plurality of second toothed columns are uniformly fixedly arranged on the outer wall of the rotating ring away from the motor, and the plurality of second toothed columns partially cover the outer wall of the rotating ring. Gears are fitted onto both the end of the collar away from the fixed base and the end of the turntable away from the fixed base. The gear on the collar meshes with the second toothed column, and the gear on the turntable meshes with the first toothed column.

10. The thin-walled steel pipe straightening and flaring integrated machine according to claim 9, characterized in that, A sliding seat is rotatably connected to one side of the rotating ring, and the sliding seat is slidably connected to the base. A connecting rod is fixedly provided at the lower end of the side wall near the rotating ring of the sliding seat. The connecting rod has an L-shaped structure and is slidably connected to the base. The base has a guide groove at its top, and the movable seat is slidably disposed in the guide groove. The end of the connecting rod near the fixed plate extends into the guide groove and is fixedly fitted with a slider that slides in cooperation with the guide groove. The slider is pressed against the lower end of the movable seat.

11. The thin-walled steel pipe straightening and flaring integrated machine according to claim 1, characterized in that, The rotating plate has a threaded hole in the middle. Both the fixing rod and the threaded hole are T-shaped structures. The outer wall of the fixing rod away from the moving seat has an external thread that is threaded to the threaded hole. A pull rod is fixedly provided at the end of the fixed rod away from the movable seat, and two tension springs are provided opposite to each other between the side wall of the rotating plate and the side wall of the fixed plate. Both the rotating plate and the fixed plate have circular holes at positions opposite to the tension springs, and the two ends of the tension springs are respectively connected and fixed to the inner walls of the circular holes on both sides.

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