Steel pipe rounding equipment and method based on visual inspection

Abstract

The invention discloses steel pipe roundness correcting equipment and method based on visual inspection, and relates to the technical field of steel pipe roundness correction.The steel pipe roundness correcting equipment comprises a rack, a pressurizing mechanism, a supporting mechanism and an auxiliary mechanism, the supporting mechanism comprises a lower supporting assembly, an inner supporting assembly and a moving assembly, the inner supporting assembly comprises a main plate, and a circle of groove is formed in the edge of the main plate; a visual monitoring module is laid in the groove, two sets of supporting blocks are arranged on the two sides of the main plate correspondingly, the two supporting blocks are located at the two opposite ends of the main plate and are kept consistent with the pressurizing direction of the pressurizing mechanism, the supporting blocks are connected with connecting rods, connecting blocks are fixed to the other ends of the connecting rods, sliding shafts are rotationally arranged in the connecting blocks, and the sliding shafts are connected with the connecting rods. The sliding shaft is hinged to a rocker arm, the rocker arm is hinged to a first air cylinder, and the first air cylinder is fixed to the surface of the main plate. Deformation damage of the inner diameter of the steel pipe in the rounding process can be avoided, and the rounding quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe rounding, and in particular to a steel pipe rounding device and method based on visual inspection. Background Art

[0002] Steel pipe is a widely used pipe material with various types and uses. Depending on the use requirements, there are many different specifications of steel pipes. Before being put into use, the steel pipes are generally processed, such as cutting and punching. For some steel pipes with thinner wall thickness, slight deformation may occur after processing, that is, the roundness of the steel pipe changes. Therefore, correction is required before formal use. Steel pipe rounding refers to the correction of shape defects such as ovality of steel pipes through certain processes and equipment to achieve the required roundness accuracy. Common steel pipe rounding equipment mostly uses a straightening process of flattening and rounding to reduce the ovality of the steel pipe.

[0003] The straightening process includes: measurement and positioning: using a measuring tool to measure the maximum and minimum outer diameters of the steel pipe, placing the largest diameter vertically and the smallest diameter horizontally; equipment adjustment; and pressure application: using a hydraulic or screw device to slowly press down the upper pressure block or pass the steel pipe through straightening rollers to apply pressure to the steel pipe, causing it to deform and achieve the purpose of straightening. Holding and testing: When the pressure reaches the expected scale, it is maintained for a certain period of time, then released. The straightened steel pipe is then tested to check whether its roundness meets the requirements.

[0004] Thin-walled steel pipes are susceptible to deformation due to stress, so the applied pressure must be precisely controlled. Excessive straightening force can cause scratches or cracks on the pipe surface. While damage to the outer surface is easy to detect, deformation and damage to the inner wall can be difficult to detect during the straightening process. Summary of the Invention

[0005] The purpose of the present invention is to provide a steel pipe rounding device and method based on visual inspection to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a steel pipe rounding equipment based on visual inspection, including a frame, a pressure mechanism, a support mechanism and an auxiliary mechanism. The support mechanism and the auxiliary mechanism are arranged on both sides of the frame for supporting the steel pipe and limiting the steel pipe. The pressure mechanism is installed on the frame for applying pressure to the steel pipe. The support mechanism includes a lower support assembly, an inner support assembly and a moving assembly. The lower support assembly is arranged on the frame for holding the steel pipe. The moving assembly is fixed on the outside of the frame. The inner support assembly and the auxiliary mechanism cooperate with the moving assembly respectively.

[0007] According to the above technical solution, the internal support assembly includes a main board, which is arranged to be circular and has a diameter smaller than the inner diameter of the steel pipe. A circle of grooves is provided on the edge of the main board, and a visual monitoring module is laid in the groove. Two groups of support blocks are respectively provided on both sides of the main board. The two support blocks are located at opposite ends of the main board and are consistent with the pressurizing direction of the pressurizing mechanism. The support block is connected to a connecting rod, and a connecting block is fixed to the other end of the connecting rod. A sliding shaft is rotatably provided inside the connecting block, and the sliding shaft is hinged to a rocker arm, and the rocker arm is hinged to cylinder one, and cylinder one is fixed to the surface of the main board.

[0008] According to the above technical solution, the support block has an arc that matches the inner diameter of the steel pipe. Moving grooves are provided on both sides of the main board to match the moving direction of the support block. The sliding shaft slides in conjunction with the moving groove. A buffer spring is provided on the outside of the connecting rod to improve the supporting effect of the support block and reduce the force on the support block when the steel pipe is under pressure. A force test module is provided at the connection between the connecting rod and the connecting block to determine whether the support block is in contact with the inner wall of the steel pipe.

[0009] According to the above technical solution, the connecting rod is set to a hollow structure, a heat exchange chamber is opened inside the support block, an input pipe is connected to the end of the connecting rod facing the support block, the outlet end of the input pipe is separated from the inner wall surface of the heat exchange chamber, and several exchange ports connected to the heat exchange chamber are opened on the surface of the support block. The exchange port is connected to a temperature change box and a switch valve is provided on the connecting pipeline. The temperature change box is used to adjust the temperature of the heat exchange air flow. The temperature change box is connected to the connecting rod and an air flow conveyor is provided on the connecting pipeline.

[0010] According to the above technical solution, a partition is provided on the input pipe, which divides the interior of the heat exchange chamber into two spaces, the upper and lower spaces. The exchange port is located in the upper space of the partition. A spring is connected between the partition and the inner wall of the heat exchange chamber. The spring is located in the lower space of the partition. A pressure sensing module is provided at the connection end of the spring. Several airflow outlets are opened on the side of the support block facing the main board, and the airflow outlets are located on the lower side of the exchange port.

[0011] According to the above technical solution, several guide rods are connected to the surface of the main board, and a drive plate is passed through the guide rods. The drive plate is mounted on the drive end of the mobile component. A screw rod 1 is passed through the middle of the drive plate, and one end of the screw rod is rotatably connected to the surface of the main board. A gear 1 is rotatably set on the drive plate, and the gear 1 cooperates with the screw rod 1. The gear 1 is connected to the gear 2, and the gear 2 is connected to the driver 1.

[0012] According to the above technical solution, the auxiliary mechanism includes a fixed frame, which is mounted on the driving end of the mobile component, with plug plates connected on both sides of the fixed frame, a mounting plate fixed inside the fixed frame, a screw rod 2 passing through the mounting plate, a gear 3 being sleeved on the screw rod 2, a gear 3 being connected to a gear 4, a gear 4 being connected to a driver 2, a mobile box being passed through both sides of the screw rod 2, the mobile box being threadedly engaged with the screw rod 2, a limit plate being provided in the mobile box in conjunction with the plug plate, a limit block being provided in the mobile box, a cylinder 2 being connected on both sides of the limit block, and the cylinder 2 being fixed on the inner wall of the mobile box.

[0013] According to the above technical solution, the moving assembly includes screw three, which is rotatably arranged on both sides of the frame, and moving seats are passed through both sides of screw three. Guide rails are provided on both sides of the frame to cooperate with the moving seats. Gear five is sleeved on screw three, gear five is connected to gear six, gear six is ​​connected to driver three, driver three is fixed on both sides of the frame, and the drive plate and the fixed frame are respectively connected and fixed to the corresponding moving seats.

[0014] According to the above technical solution, the lower support assembly includes a plurality of support wheels and moving wheels. The support wheels are mounted on the frame, and the moving wheels are arranged on the lower side of the pressurizing mechanism.

[0015] According to the above technical solution, moving blocks are connected on both sides of the moving wheel, a screw rod four is passed through the moving block, the moving block and the screw rod four are threaded together, and one end of the screw rod four is connected to a driver four.

[0016] According to the above technical solution, the pressurizing mechanism includes a hydraulic cylinder and a pressing block. The pressing block is fixed to the driving end of the hydraulic cylinder, and the pressing block matches the standard specifications and shape of the steel pipe.

[0017] Compared with existing technologies, the present invention achieves the following beneficial effects: The internal support assembly allows for flexible adjustment of the internal support range of the steel pipe according to the pipe rounding specifications, resulting in strong applicability. Combined with a visual monitoring module, the deformation state of the inner wall of the steel pipe at the pressure point can be monitored, preventing over-straightening and surface damage, thereby improving the rounding quality. The heat exchange chamber allows for adjustment of the steel pipe surface temperature during the rounding process based on the working environment and pipe wall thickness specifications. Both indirect and direct heat exchange can be performed as needed, improving flexibility and controllability of the pipe rounding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the rounding device of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure of the inner support assembly of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the mainboard of the present invention;

[0022] Figure 4 Schematic diagram of the connection structure of the support block of the present invention;

[0023] Figure 5 is a cross-sectional view of a support block of the present invention;

[0024] Figure 6 Schematic diagram of the position of the airflow outlet of the present invention;

[0025] Figure 7 Schematic diagram of the connection structure of the drive plate of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the auxiliary mechanism of the present invention;

[0027] Figure 9 is an exploded view of the auxiliary mechanism of the present invention;

[0028] Figure 10 It is a partial structural diagram of the mobile assembly of the present invention;

[0029] Figure 11 It is a structural schematic diagram of the pressurizing mechanism of the present invention;

[0030] Figure 12 It is a schematic diagram of the connection structure of the moving wheel of the present invention.

[0031] In the figure: 1. Frame; 11. Support wheel; 12. Moving wheel; 13. Moving block; 14. Screw rod 4; 15. Driver 4; 2. Pressurizing mechanism; 21. Hydraulic cylinder; 22. Pressing block; 3. Auxiliary mechanism; 31. Fixing frame; 311. Insert plate; 312. Mounting plate; 32. Screw rod 2; 33. Gear 3; 34. Gear 4; 35. Driver 2; 36. Moving box; 361. Limit plate; 362. Limit block; 363. Cylinder 2; 4. Steel pipe; 5. Inner support assembly; 51. Main board; 511. Visual monitoring module; 512. Moving slot; 513. Guide rod; 514 , drive plate; 515, screw one; 516, gear one; 517, gear two; 518, driver one; 52, support block; 521, heat exchange chamber; 522, exchange port; 523, partition; 524, spring; 525, air flow output port; 53, connecting rod; 531, buffer spring; 532, input pipe; 54, connecting block; 55, sliding shaft; 56, rocker arm; 57, cylinder one; 6, moving component; 61, screw three; 62, moving seat; 63, guide rail; 64, gear five; 65, gear six; 66, driver three; 7, temperature change box; 8, switch valve; 9, air flow conveyor. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1-12 The present invention provides a technical solution: a steel pipe rounding equipment based on visual inspection, including a frame 1, a pressure mechanism 2, a support mechanism and an auxiliary mechanism 3. The support mechanism and the auxiliary mechanism 3 are arranged on both sides of the frame 1 to support the steel pipe 4 and limit the steel pipe 4. The pressure mechanism 2 is installed on the frame 1 to apply pressure to the steel pipe 4. The support mechanism includes a lower support assembly, an inner support assembly 5 and a moving assembly 6. The lower support assembly is arranged on the frame 1 to hold the steel pipe 4. The moving assembly 6 is fixed to the outside of the frame 1. The inner support assembly 5 and the auxiliary mechanism 3 cooperate with the moving assembly 6 respectively.

[0034] like Figure 2-Figure 4 As shown, the internal support assembly 5 includes a main board 51, which is arranged to be circular and has a diameter smaller than the inner diameter of the steel pipe 4. A circle of grooves is provided on the edge of the main board 51, and a visual monitoring module 511 is laid in the groove. Two groups of support blocks 52 are respectively provided on both sides of the main board 51. The two support blocks 52 are located at opposite ends of the main board 51 and are consistent with the pressurizing direction of the pressurizing mechanism 2. The support block 52 is connected to a connecting rod 53, and a connecting block 54 is fixed to the other end of the connecting rod 53. A sliding shaft 55 is rotatably provided inside the connecting block 54, and the sliding shaft 55 is hinged to a rocker arm 56, and the rocker arm 56 is hinged to a cylinder 57, and the cylinder 57 is fixed to the surface of the main board 51.

[0035] Supplementary explanations based on the above structure are as follows: the support block 52 has a certain curvature, which matches the inner diameter of the steel pipe 4. Moving grooves 512 are provided on both sides of the main board 51 to match the moving direction of the support block 52. The sliding shaft 55 slides with the moving groove 512. Preferably, a buffer spring 531 is provided on the outside of the connecting rod 53 to improve the supporting effect of the support block 52 and reduce the force on the support block 52 when the steel pipe 4 is under pressure. A strong test module is provided at the connection between the connecting rod 53 and the connecting block 54 to determine whether the support block 52 is in contact with the inner wall of the steel pipe 4. When the cylinder 57 pushes the rocker arm 56, the rocker arm 56 simultaneously pushes the sliding shaft 55 to move in the moving groove 512, so that the connecting block 54 drives the support block 52 to move toward the outside of the main board 51. The maximum moving distance of the support block 52 is determined by the inner diameter of the steel pipe 4, which is used to avoid excessive rounding of the steel pipe 4 and plays the role of internal support limit. The visual monitoring module 511 is used to monitor the deformation state of the inner wall of the compressed position of the steel pipe 4; when the cylinder 57 pulls the rocker arm 56, the sliding shaft 55 pulls back the support block 52 to move toward the inside of the main board 51, thereby releasing the limit on the inside of the steel pipe 4.

[0036] Further, such as Figure 5-Figure 6As shown, the connecting rod 53 is set to a hollow structure, a heat exchange chamber 521 is opened inside the support block 52, and an input pipe 532 is connected to the end of the connecting rod 53 facing the support block 52. The outlet end of the input pipe 532 is separated from the inner wall surface of the heat exchange chamber 521, and a plurality of exchange ports 522 connected to the heat exchange chamber 521 are opened on the surface of the support block 52. The exchange ports 522 are externally connected to a temperature change box 7 and a switch valve 8 is provided on the connecting pipeline. The temperature change box 7 is used to adjust the temperature of the heat exchange air flow. The temperature change box 7 is connected to the connecting rod 53 and an air flow conveyor 9 is provided on the connecting pipeline.

[0037] Preferably, the exchange port 522 avoids the central area of ​​the support block 52 and is located at both ends of the support block 52. The heat exchange airflow is pushed from the middle of the heat exchange chamber 521 to the two sides, so that the airflow preferentially exchanges heat with the compressed position of the support block 52, thereby improving energy utilization efficiency. The support block 52 is made of a material with good thermal conductivity. Based on the ambient temperature and the thickness of the steel pipe 4, it is determined whether to adjust the surface temperature of the steel pipe 4. The temperature change box 7 adjusts the airflow temperature through, but not limited to, electric heating and heat exchange systems. The airflow conveyor 9 conveys the heat exchange airflow into the heat exchange chamber 521, and the steel pipe 4 is flexibly heat-exchanged through the support block 52. The heat exchange airflow returns to the temperature change box 7 through the exchange port 522 for circulation.

[0038] Furthermore, a partition 523 is provided on the input pipe 532, and the partition 523 divides the interior of the heat exchange chamber 521 into two spaces, an upper space and an lower space. The exchange port 522 is located in the upper space of the partition 523, and a spring 524 is connected between the partition 523 and the inner wall of the heat exchange chamber 521. The spring 524 is located in the lower space of the partition 523, and a pressure sensing module is provided at the connection end of the spring 524. A plurality of airflow outlets 525 are opened on the side of the support block 52 facing the main board 51, and the airflow outlets 525 are located on the lower side of the exchange port 522.

[0039] It should be noted that: in the initial state, the partition 523 is acted upon by the spring 524. At this time, the airflow outlet 525 is located in the lower space of the partition 523. When the circulating airflow begins to flow into the heat exchange chamber 521, the partition 523 is squeezed by the airflow, and the upper space of the partition 523 becomes larger. The partition 523 is still located between the airflow outlet 525 and the exchange port 522, and the airflow outlet 525 is not connected to the heat exchange chamber 521; when the switch valve 8 is switched to the closed state, the airflow in the heat exchange chamber 521 cannot be output through the exchange port 522. The airflow gradually squeezes the partition 523 and compresses the spring 524, causing the upper space of the partition 523 to continue to expand until the airflow outlet 525 is exposed. The heat exchange airflow will be directly output through the airflow outlet 525 and contact the inner wall of the steel pipe 4 for heat exchange, which is suitable for situations where temperature control is urgently needed. The pressure sensing module is used to detect the force state of the spring 524, thereby monitoring the movement state of the partition 523. Optionally, a thermal sensing module is provided on the edge of the main board 51 to detect the temperature change of the wall of the steel pipe 4 during the deformation process.

[0040] In one embodiment, Figure 7 As shown, several guide rods 513 are connected to the surface of the main board 51, and a driving plate 514 is passed through the guide rod 513. The driving plate 514 is mounted on the driving end of the moving component 6. A screw 1 515 is passed through the middle of the driving plate 514. One end of the screw 1 515 is rotatably connected to the surface of the main board 51. A gear 1 516 is rotatably provided on the driving plate 514. The gear 1 516 cooperates with the screw 1 515. The gear 1 516 is connected to the gear 2 517, and the gear 2 517 is connected to the driver 1 518.

[0041] In actual operation, the driving plate 514 is controlled by the moving component 6 to move relative to the steel pipe 4. When the driver 1 518 is started, the gear 2 517 drives the gear 1 516 to rotate, so that the screw 1 515 rotates and moves relative to the driving plate 514, thereby pushing the main board 51 into the interior of the steel pipe 4.

[0042] like Figure 8-Figure 9 As shown, the auxiliary mechanism 3 includes a fixed frame 31, which is mounted on the driving end of the moving component 6, and plug plates 311 are connected on both sides of the fixed frame 31. A mounting plate 312 is fixed inside the fixed frame 31, and a screw 2 32 is passed through the mounting plate 312. A gear 33 is sleeved on the screw 2 32, and the gear 33 is connected to the gear 4 34. The gear 4 34 is connected to the driver 2 35. A moving box 36 is passed through both sides of the screw 2 32, and the moving box 36 is threadedly engaged with the screw 2 32. The moving box 36 is equipped with a limit plate 361 in conjunction with the plug plate 311, and a limit block 362 is set in the moving box 36. Cylinder 2 363 is connected on both sides of the limit block 362, and cylinder 2 363 is fixed on the inner wall of the moving box 36.

[0043] In actual operation, the fixed frame 31 is controlled by the moving assembly 6 to move relative to the steel pipe 4. When the second driver 35 is activated, the fourth gear 34 drives the third gear 33 to rotate, causing the second screw 32 to rotate, thereby moving the two movable boxes 36 away from or closer to the fixed frame 31. The insert plate 311 and the limit plate 361 are used to guide and limit the movable boxes 36 during movement. The movable boxes 36 are used to adjust the distance between the two limit blocks 362. The second cylinder 363 is used to control the height of the limit block 362, which is used to prevent one end of the steel pipe 4 from tilting.

[0044] like Figure 10 As shown, the moving assembly 6 includes a screw rod 3 61, which is rotatably arranged on both sides of the frame 1, and a moving seat 62 is penetrated on both sides of the screw rod 3 61. Guide rails 63 are provided on both sides of the frame 1 to cooperate with the moving seat 62. A gear 5 64 is sleeved on the screw rod 3 61, and the gear 5 64 is connected to the gear 65. The gear 65 is connected to the driver 3 66. The driver 3 66 is fixed on both sides of the frame 1, and the drive plate 514 and the fixed frame 31 are respectively connected and fixed to the corresponding moving seat 62.

[0045] In actual operation, the driver three 66 drives the gear six 65 to rotate through the gear six 65, so that the screw three 61 rotates synchronously, causing the moving seats 62 on both sides to move closer to or away from each other.

[0046] The lower support assembly includes a plurality of support wheels 11 and moving wheels 12 . The support wheels 11 are mounted on the frame 1 , and the moving wheels 12 are arranged on the lower side of the pressurizing mechanism 2 .

[0047] In one embodiment, Figure 12 As shown, movable blocks 13 are connected to both sides of movable wheel 12. Screws 14 are threaded through movable blocks 13. These screws 14 engage with movable blocks 13, and one end of screws 14 is connected to a driver 15. In actual operation, the driver 15 controls the rotation of screws 14, causing movable blocks 13 to move movable wheel 12 up and down.

[0048] like Figure 11 As shown, the pressurizing mechanism 2 includes a hydraulic cylinder 21 and a pressing block 22 . The pressing block 22 is fixed to the driving end of the hydraulic cylinder 21 . The pressing block 22 matches the standard specifications and shape of the steel pipe 4 .

[0049] The specific implementation methods are as follows:

[0050] Step 1: Feed the material, place the steel pipe 4 on the support wheel 11, place the largest diameter vertically, and the smallest diameter horizontally, press the steel pipe 4 down so that the side shorter than the end faces the inner support assembly 5. The structural rigidity of this end of the steel pipe 4 is relatively good, and press the steel pipe 4 down so that the side longer than the end faces the auxiliary mechanism 3. This end is longer and has a relatively higher risk of warping when pressurized, and requires the limit block 362 of the auxiliary mechanism 3 to constrain it.

[0051] Step 2: Limiting, the moving component 6 controls the inner support component 5 to move to the end of the steel pipe 4, the driving plate 514 controls the main board 51 to advance into the inside of the steel pipe 4, so that the main board 51 is located in the compressed position, and controls the upper and lower support blocks 52 to be pushed outward to reach the standard diameter position. The auxiliary mechanism 3 adjusts the distance between the two moving boxes 36 as needed, and moves the limit block 362 to the surface of the steel pipe 4, in a non-compression state.

[0052] Step 3: Rounding, the pressure mechanism 2 presses down, and the moving wheel 12 lifts up at the same time. The lifting trajectory of the moving wheel 12 and the downward trajectory of the pressing block 22 work together to gradually round the elliptical cross-section of the steel pipe 4 (the short axis is compressed and the long axis is stretched) to the target standard roundness. During this process, the thermal sensing module detects the temperature change of the wall of the steel pipe 4 during the deformation process in real time. According to the range and amplitude of the temperature change, it determines whether heat exchange is needed and selects the heat exchange form.

[0053] Specifically, in step 2, the extension process of the support block 52 is limited by the contact between its arc-shaped structure and the inner wall of the steel pipe 4. When the outer surfaces of the upper and lower support blocks 52 are in contact with the inner wall of the steel pipe 4, and the force testing module detects a stable contact force, it indicates that the support block 52 has expanded to the set "standard diameter position" (usually the target inner diameter or slightly smaller than the target inner diameter). At this time, the support block 52 provides rigid internal support and precise radial limiting for the inner wall of the steel pipe, preventing the steel pipe from being excessively deformed (over-rounding) during subsequent pressurization. The limit block 362 only provides a constraint reference in the axial and / or vertical direction, allowing the steel pipe 4 to have a slight axial movement or rotation during the rounding process, but can effectively prevent the end from seriously warping (bouncing up) when pressurized.

[0054] In step three, based on the preset process parameters (such as material properties, wall thickness, deformation rate, target temperature control range) and the temperature change range and amplitude monitored in real time, it is dynamically determined whether active heat exchange intervention is needed.

[0055] No heat exchange required: If the temperature rise is within a safe and controllable range (such as lower than the material recrystallization temperature or the upper limit allowed by the process) and the temperature distribution is uniform, maintain the status quo.

[0056] Heat exchange is required: first determine the form of heat exchange.

[0057] Flexible Contact Heat Exchange (Preferred): If temperature rise needs to be controlled but is not urgent, open the temperature-variable box 7, airflow conveyor 9, and corresponding on / off valve 8. The temperature-variable box 7 adjusts the airflow temperature as needed (cooling or heating). The airflow enters the heat exchange chamber 521, where it undergoes indirect, flexible heat exchange with the inner wall of the steel pipe 4 through the heat-conducting surface of the support block 52. The airflow then circulates back to the temperature-variable box 7. This method provides gentle and uniform heat exchange.

[0058] Direct Injection Heat Exchange (Emergency): If a sharp rise in temperature is detected in a local area (approaching a dangerous threshold or generating excessive thermal stress risk), requiring rapid cooling, valve 8 is closed. Pressure within heat exchange chamber 521 increases, and airflow squeezes baffle 523, compressing spring 524 until airflow outlet 525 is exposed. At this point, the heat exchange airflow is injected directly through outlet 525 onto the inner surface of steel pipe 4, achieving rapid, direct forced convection heat exchange and emergency cooling.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0060] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A steel pipe rounding device based on visual inspection, comprising a frame (1), a pressurizing mechanism (2), a supporting mechanism and an auxiliary mechanism (3), characterized in that: The supporting mechanism and the auxiliary mechanism (3) are mounted on both sides of the frame (1) and are used to support the steel pipe (4) and to limit the position of the steel pipe (4). The pressurizing mechanism (2) is mounted on the frame (1) and is used to apply pressure to the steel pipe (4). The supporting mechanism comprises a lower supporting assembly, an inner supporting assembly (5) and a moving assembly (6). The lower supporting assembly is arranged on the frame (1) and is used to support the steel pipe (4). The moving assembly (6) is fixed to the outside of the frame (1). The inner supporting assembly (5) and the auxiliary mechanism (3) respectively cooperate with the moving assembly (6). The inner support assembly (5) includes a main board (51), the main board (51) is arranged in a circular shape and has a diameter smaller than the inner diameter of the steel pipe (4), a groove is provided on the edge of the main board (51), and a visual monitoring module (511) is laid in the groove, two groups of support blocks (52) are respectively provided on both sides of the main board (51), the two support blocks (52) are located at opposite ends of the main board (51) and are consistent with the pressurizing direction of the pressurizing mechanism (2), the support blocks (52) are connected to a connecting rod (53), the other end of the connecting rod (53) is fixed with a connecting block (54), a sliding shaft (55) is rotatably provided inside the connecting block (54), the sliding shaft (55) is hinged with a rocker arm (56), the rocker arm (56) is hinged with a cylinder (57), and the cylinder (57) is fixed on the surface of the main board (51).

2. The steel pipe rounding equipment based on visual inspection according to claim 1 is characterized in that: The support block (52) has an arc and matches the inner diameter of the steel pipe (4). Moving grooves (512) are provided on both sides of the main board (51) to match the moving direction of the support block (52). The sliding shaft (55) is slidably matched with the moving grooves (512). A buffer spring (531) is sleeved on the outer side of the connecting rod (53). A force test module is provided at the connection between the connecting rod (53) and the connecting block (54) for judging whether the support block (52) is in contact with the inner wall of the steel pipe (4).

3. The steel pipe rounding device based on visual inspection according to claim 2 is characterized in that: The connecting rod (53) is configured as a hollow structure. A heat exchange chamber (521) is provided inside the support block (52). An input pipe (532) is connected to one end of the connecting rod (53) facing the support block (52). The outlet end of the input pipe (532) is separated from the inner wall surface of the heat exchange chamber (521). The surface of the support block (52) is provided with a plurality of exchange ports (522) connected to the heat exchange chamber (521). The exchange ports (522) are externally connected to the temperature change box (7) and a switch valve (8) is provided on the connecting pipeline. The temperature change box (7) is used to adjust the temperature of the heat exchange air flow. The temperature change box (7) is connected to the connecting rod (53) and an air flow conveyor (9) is provided on the connecting pipeline.

4. The steel pipe rounding device based on visual inspection according to claim 3 is characterized in that: A partition (523) is provided on the input pipe (532), and the partition (523) divides the interior of the heat exchange chamber (521) into two upper and lower spaces. The exchange port (522) is located in the upper space of the partition (523). A spring (524) is connected between the partition (523) and the inner wall of the heat exchange chamber (521). The spring (524) is located in the lower space of the partition (523). A pressure sensing module is provided at the connection end of the spring (524). A plurality of airflow outlets (525) are provided on the side of the support block (52) facing the main board (51), and the airflow outlets (525) are located on the lower side of the exchange port (522).

5. The steel pipe rounding device based on visual inspection according to claim 4 is characterized in that: The surface of the main board (51) is connected to a plurality of guide rods (513), and a driving plate (514) is passed through the guide rods (513). The driving plate (514) is mounted on the driving end of the moving component (6). A screw rod (515) is passed through the middle of the driving plate (514), and one end of the screw rod (515) is rotatably connected to the surface of the main board (51). A gear rod (516) is rotatably provided on the driving plate (514), and the gear rod (516) cooperates with the screw rod (515). The gear rod (516) is connected to a gear rod (517), and the gear rod (517) is connected to a driver (518).

6. The steel pipe rounding device based on visual inspection according to claim 5, characterized in that: The auxiliary mechanism (3) includes a fixed frame (31), the fixed frame (31) is mounted on the driving end of the moving assembly (6), the fixed frame (31) is connected to the two sides of the fixed frame (31) with plug plates (311), the fixed frame (31) is fixed with a mounting plate (312) inside, the mounting plate (312) is provided with a second screw (32), the screw (32) is provided with a third gear (33), the gear (33) is connected to a fourth gear (34), the gear (34) is connected to the fourth gear (34), and the fourth gear (34) is connected to the second gear (34). A second driver (35) is connected, and a moving box (36) is provided on both sides of the second screw (32), and the moving box (36) is threadedly matched with the second screw (32), and the moving box (36) is provided with a limit plate (361) in cooperation with the plug plate (311), and a limit block (362) is provided in the moving box (36), and a second cylinder (363) is connected on both sides of the limit block (362), and the second cylinder (363) is fixed on the inner wall of the moving box (36).

7. The steel pipe rounding device based on visual inspection according to claim 6, characterized in that: The moving assembly (6) includes a screw rod three (61), the screw rod three (61) is rotatably arranged on both sides of the frame (1), a moving seat (62) is passed through both sides of the screw rod three (61), and guide rails (63) are provided on both sides of the frame (1) to cooperate with the moving seat (62), a gear five (64) is sleeved on the screw rod three (61), the gear five (64) is connected to the gear six (65), the gear six (65) is connected to the driver three (66), the driver three (66) is fixed on both sides of the frame (1), and the drive plate (514) and the fixed frame (31) are respectively connected and fixed to the corresponding moving seat (62).

8. The steel pipe rounding device based on visual inspection according to claim 7, characterized in that: The lower support assembly comprises a plurality of support wheels (11) and moving wheels (12); the support wheels (11) are mounted on the frame (1); and the moving wheels (12) are arranged on the lower side of the pressurizing mechanism (2).

9. The steel pipe rounding device based on visual inspection according to claim 8, characterized in that: The two sides of the moving wheel (12) are connected with moving blocks (13), the moving blocks (13) are provided with screw rods (14), the moving blocks (13) are threadedly matched with the screw rods (14), and one end of the screw rods (14) is connected with a driver (15).

10. A method for using a steel pipe rounding device based on visual inspection, applicable to the steel pipe rounding device based on visual inspection according to claim 9, characterized in that: The specific method is as follows: Step 1: feeding, placing the steel pipe (4) on the support wheel (11), placing the largest diameter vertically and the smallest diameter horizontally, pressing the steel pipe (4) downward so that the side shorter than the end faces the inner support assembly (5), and the structural rigidity of this end is relatively good, pressing the steel pipe (4) downward so that the side longer than the end faces the auxiliary mechanism (3), and this end is longer, so the risk of warping is relatively higher when pressurized, and the limit block (362) of the auxiliary mechanism (3) is required to constrain it; Step 2: Limiting, the moving assembly (6) controls the inner support assembly (5) to move to the end of the steel pipe (4), the driving plate (514) controls the main board (51) to advance into the interior of the steel pipe (4), so that the main board (51) is located in the compressed position, and the upper and lower support blocks (52) are controlled to be pushed outward to reach the standard diameter position, the auxiliary mechanism (3) adjusts the distance between the two moving boxes (36) as required, and moves the limit block (362) to the surface of the steel pipe (4) to maintain a non-compressed state; Step 3: Rounding, the pressure mechanism (2) presses down, and the moving wheel (12) lifts up at the same time. The lifting trajectory of the moving wheel (12) and the pressing trajectory of the lower pressing block (22) work together to gradually round the elliptical cross-section of the steel pipe (4) to the target standard roundness. During this process, the thermal sensing module detects the temperature state of the wall of the steel pipe (4) during the deformation process in real time, and determines whether heat exchange is required based on the temperature change range and amplitude, and selects the heat exchange form.

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