Device and method for detecting and adjusting pipe expansion angle of internal thread pipe

Abstract

The invention relates to the technical field of copper pipe forming, in particular to an internal thread pipe expansion angle detection and adjustment device and method, and the device comprises a discharging arm and a control part; a detection mechanism and an adjusting mechanism are arranged at the tail end of the discharging arm; the adjusting mechanism comprises a plurality of movable rollers; the detection mechanism is used for detecting the angle position of the pipe body passing through the movable roller, and the movable roller adjusts the discharging angle of the pipe body. The control part comprises a driving mechanism and a transmission mechanism; the driving mechanism is arranged at the starting end of the discharging arm, the driving mechanism transmits power through the transmission mechanism to drive the movable roller to move, and a material control panel is arranged at the tail end of the discharging arm. A feeding port is formed in the material control panel, fixed rollers are symmetrically arranged in the feeding port up and down, and the movable rollers and the fixed rollers are staggered and perpendicularly arranged, the pipe expanding angle of the internal threaded pipe is detected and adjusted in time, and the situation that a copper pipe is snapped or bent due to adjustment lag is avoided.

Description

Technical Field

[0001] This invention relates to the technical field of copper tube forming, and in particular to a device and method for detecting and adjusting the expansion angle of an internally threaded tube. Background Technology

[0002] In the internal thread expansion forming process of copper tubes, the coiled blank is generally wound on a material frame. During forming, the tube on the material frame is transported to the forming machine. This requires matching the rotation speed of the material frame with the stretching speed to ensure the normal operation of the tube stretching. However, during the long stretching process, due to the accumulation of motion errors of the drive components, the stretching speed and the rotation speed of the material frame will become mismatched. This will cause the tube to be too short between the forming machine and the material frame, resulting in breakage or bending and twisting due to excessive excess of the tube.

[0003] Therefore, in the current process of feeding copper tubes, the feeding swing arm is often used to adjust and compensate for the copper tubes with angular deviation. However, such swing arm mechanisms are mostly bulky and have a long extension length. Not only is the driving energy consumption high, but the swing arm itself has a large inertia, which is prone to causing adjustment response delay. As a result, it is difficult to accurately control the cutting angle of the copper tube entering the forming machine mold. For the internal thread expansion forming process of copper tubes, if the copper tube feeding angle is skewed, it is impossible to ensure that the copper tube, the internal core rod and the spinning mold are coaxial. This can easily lead to problems such as the deviation of the thread core and uneven internal thread tooth shape, thus affecting the forming accuracy and product quality of the internal thread tube.

[0004] Therefore, it is necessary to provide a device and method for detecting and adjusting the expansion angle of an internally threaded pipe to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for detecting and adjusting the expansion angle of an internally threaded tube, so as to realize timely detection and adjustment of the expansion angle of the internally threaded tube and avoid copper tube breakage or bending caused by adjustment lag.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a device for detecting and adjusting the expansion angle of an internally threaded tube, comprising a feeding arm and a control unit; The end of the feeding arm has a detection mechanism and an adjustment mechanism; The adjustment mechanism includes several movable rollers; The detection mechanism is used to detect the angular position of the tube body passing through the movable roller, and the movable roller adjusts the feeding angle of the tube body; The control unit includes a drive mechanism and a transmission mechanism; The drive mechanism is located at the starting end of the feeding arm, and the drive mechanism transmits power to drive the movable roller to move through the transmission mechanism.

[0007] As a preferred embodiment of the present invention, a material control panel is provided at the end of the feeding arm; The material control panel has a feed inlet, and fixed rollers are symmetrically arranged inside the feed inlet. The movable roller and the fixed roller are staggered and perpendicular to each other.

[0008] As a preferred embodiment of the present invention, a linear guide rail is provided on one side of the material control panel, a slider is slidably fitted on the outer side of the linear guide rail, a concave frame is provided on the outer side of the slider, and the movable rollers are symmetrically distributed and rotatably connected to the bottom two ends of the concave frame.

[0009] As a preferred embodiment of the present invention, the detection mechanism includes a laser sensor, and a connecting frame is fixedly connected to one side of the laser sensor. The connecting frame is bolted to the center position of the concave frame.

[0010] As a preferred embodiment of the present invention, the detection mechanism includes a force sensor disposed on the top of the movable roller.

[0011] As a preferred embodiment of the present invention, a lever is provided at the top center of the concave frame, a transverse groove is provided through the center of the material control panel, a drive ring is provided on the side of the material control panel that is connected to the feeding arm, a swing rod is fixedly connected to one end of the drive ring, a limit groove is provided at the center of the swing rod, the limit groove is provided along the length direction of the swing rod, the swing rod passes through the transverse groove, and the limit groove is sleeved on the outside of the lever.

[0012] As a preferred embodiment of the present invention, the other side of the material control panel is bolted with symmetrically arranged hinge seats, the hinge seats are respectively arranged on the upper and lower sides of the horizontal groove, and a hinge shaft is arranged between the hinge seats. One end of the feeding arm is provided with a round end seat, the round end seat is arranged between the hinge seats, and the hinge shaft passes through the round end seat and is rotatably connected to it.

[0013] As a preferred embodiment of the present invention, a torsion spring is provided on the outer side of the hinge shaft, and the torsion spring controls the material control panel to be perpendicular to the feeding arm.

[0014] In a preferred embodiment of the present invention, the transmission mechanism includes a drive shaft that passes through the inner side of the unloading arm and is driven to rotate by the drive mechanism. The inner side of the round end seat is provided with an adaptation cavity. One end of the drive shaft is fixedly connected to a bevel gear one. The bottom of the bevel gear one is meshed with a bevel gear two. The hinge shaft passes through the bevel gear two and is fixedly connected to it. The hinge shaft passes through the drive ring and is fixedly connected to it. One end of the round end seat is provided with an opening slot. The swing rod moves in the opening slot.

[0015] This invention also provides a method for detecting and adjusting the expansion angle of an internally threaded pipe, used in an internally threaded pipe expansion angle detection and adjustment device as described above, comprising the following steps: The angle position of the discharge tube body is detected by the detection mechanism at the end of the discharge arm; The control unit receives the detection signal and then controls the drive mechanism at the starting end of the unloading arm to move. The drive mechanism drives the movable roller to move through the transmission mechanism. The moving rollers move relative to each other, adjusting the feeding angle of the tube body, and completing the real-time detection and adjustment of the tube expansion forming angle.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention uses a movable roller for fine-tuning of displacement, avoiding large-scale swinging of the entire swing arm. The structure is lightweight, making it easy to adjust in a timely manner, reducing drive energy consumption and motion inertia, avoiding adjustment response delay, and realizing real-time and rapid correction of the copper tube feeding angle. This ensures that the copper tube, the core rod inside the forming machine, and the spinning die remain coaxial, avoiding deviation of the thread core and unevenness of the internal thread tooth shape, thus improving the forming accuracy and product qualification rate of the internal thread tube. The angle position of the tube body is set by the detection mechanism and adjusted by the movable roller, thereby dynamically compensating for the speed matching error between the feeding frame and the forming machine, avoiding the tube body from being pulled off due to too short a margin or bending and twisting due to too much margin, and further ensuring the continuous and stable feeding process. The drive mechanism is set at the starting end of the unloading arm, that is, at the connection between the unloading arm and the forming machine, thereby further reducing the load on the unloading arm. The overall device operates more smoothly, and the adjustment accuracy and response speed are better than those of the traditional swing arm, making it suitable for long-term continuous production. Attached Figure Description

[0017] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0018] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the internal threaded tube expansion angle detection and adjustment device of the present invention; Figure 2 This is a three-dimensional schematic diagram of the detection mechanism and adjustment mechanism of the present invention; Figure 3 This is a three-dimensional schematic diagram of the transverse groove of the present invention; Figure 4 This is a three-dimensional schematic diagram of the feeding arm of the present invention; Figure 5 This is a three-dimensional schematic diagram of the bevel gear set meshing of the present invention; Figure 6 This is a three-dimensional schematic diagram of the opening groove of the present invention; In the diagram: 1. Feeding arm; 101. Feed inlet; 102. Material control panel; 103. Horizontal groove; 104. Drive ring; 105. Swing arm; 106. Round end seat; 2. Movable roller; 201. Fixed roller; 202. Linear guide rail; 203. Concave frame; 204. Lever; 3. Hinge seat; 301. Hinge shaft; 4. Drive mechanism; 401. Drive shaft; 402. Bevel gear one; 403. Bevel gear two; 5. Forming machine; 6. Unwinding device; 7. Laser sensor; 701. Connector; 8. Buffer block; 9. Support column; 10. Protective cover. Detailed Implementation

[0019] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0020] Please see Figure 1-6 The present invention provides a technical solution: a device for detecting and adjusting the expansion angle of an internally threaded tube, comprising a feeding arm 1 and a control unit; The end of the feeding arm 1 has a detection mechanism and an adjustment mechanism; The adjustment mechanism includes several movable rollers 2; The detection mechanism is used to detect the angular position of the tube body passing through the movable roller 2. The movable roller 2 adjusts the feeding angle of the tube body. The control unit includes a drive mechanism 4 and a transmission mechanism; The drive mechanism 4 is located at the starting end of the feeding arm 1. The drive mechanism 4 transmits power through the transmission mechanism to drive the movable roller 2 to move.

[0021] This embodiment also provides a method for detecting and adjusting the expansion angle of an internally threaded pipe, including the following steps: Specifically, the unwinding device 6 drives the unwinding frame to rotate, unwinding the tube body. The tube body first passes through the detection mechanism at the end of the unwinding arm 1. The detection mechanism collects the feeding angle and position signal of the tube body in real time and transmits the signal to the control unit. According to the detected signal, the control unit controls the drive mechanism 4 at the beginning of the unwinding arm 1 to start. The drive mechanism 4 transmits power to the movable roller 2 through the transmission mechanism, driving the movable roller 2 to generate a corresponding displacement, thereby adjusting the feeding angle and posture of the tube body, correcting the angle deviation, so that the tube body enters the forming machine 5 in a stable and accurate posture, completing the real-time detection and automatic adjustment of the internal thread expansion angle, avoiding the tube body from breaking and bending, and ensuring the forming accuracy. In this embodiment, the displacement is finely adjusted by setting the movable roller 2, avoiding large swing adjustment of the entire swing arm. The structure is lightweight, which facilitates timely adjustment, reduces driving energy consumption and motion inertia, avoids adjustment response delay, and realizes real-time and rapid correction of the copper tube feeding angle. This ensures that the copper tube and the core rod and spinning die inside the forming machine 5 remain coaxial, avoids the deviation of the thread core and unevenness of the internal thread tooth shape, and improves the forming accuracy and product qualification rate of the internal thread tube. Furthermore, the angle position of the tube body is detected by the detection mechanism and adjusted by the movable roller 2, thereby dynamically compensating for the speed matching error between the feeding frame and the forming machine 5, avoiding the tube body from being pulled off due to too short a margin or bending and twisting due to too much margin, and further ensuring the continuous and stable feeding process. Furthermore, the drive mechanism 4 is set at the starting end of the feeding arm 1, that is, at the connection between the feeding arm 1 and the forming machine 5, thereby further reducing the load on the feeding arm 1, making the overall device run more smoothly, and the adjustment accuracy and response speed are better than the traditional swing arm, making it suitable for long-term continuous production. Preferably, the movable rollers 2 are arranged in pairs symmetrically to restrict the tube body from both sides, thereby improving the stability of the guide and the uniformity of the angle adjustment, and preventing the tube body from deviating and shaking.

[0022] Based on the above embodiments, a material control panel 102 is provided at the end of the feeding arm 1; The material control panel 102 is provided with a feed inlet 101, and fixed rollers 201 are symmetrically arranged inside the feed inlet 101. The movable roller 2 and the fixed roller 201 are staggered and perpendicular to each other.

[0023] Specifically, the tube body is inserted into the feed inlet 101 of the material control panel 102. The detection mechanism detects the angle position of the tube body in real time and feeds it back to the control unit. The fixed rollers 201, which are symmetrically arranged in the feed inlet 101, restrict the vertical movement of the tube body. The control unit drives the movable roller 2 to move. The movable roller 2, through its vertically staggered arrangement with the fixed rollers 201, corrects the feed angle of the tube body from the direction perpendicular to the guide of the fixed rollers 201. That is, it adapts and adjusts the left and right swing generated when the copper tube is fed at high speed, thus completing the angle detection and adjustment. In this embodiment, fixed rollers 201 are symmetrically arranged inside the feed inlet 101 to restrict the vertical movement of the tube body. Together with the movable roller 2, they form a bidirectional guiding structure to avoid the copper tube getting stuck and scraped during the adjustment process, thus protecting the quality of the outer wall of the copper tube. Preferably, the outer surfaces of both the fixed roller 201 and the movable roller 2 are provided with a smooth, wear-resistant, flexible coating layer, thereby reducing friction with the pipe body and preventing scratches on the pipe wall; Preferably, the material control panel 102 is made of lightweight rigid sheet material, which further reduces the load on the end of the feeding arm 1 while ensuring structural strength.

[0024] Based on the above embodiment, a linear guide rail 202 is provided on one side of the material control panel 102, a slider is slidably fitted on the outside of the linear guide rail 202, a concave frame 203 is provided on the outside of the slider, and the movable rollers 2 are symmetrically distributed and rotatably connected to the bottom two ends of the concave frame 203.

[0025] Specifically, the drive mechanism 4 transmits power to the concave frame 203 through the transmission mechanism. Since the concave frame 203 slides with the linear guide rail 202 through the slider, the slider will move along the linear guide rail 202 under the action of power, thereby driving the two movable rollers 2 at both ends of the bottom of the concave frame 203 to move back and forth synchronously. In this embodiment, the linear guide rail 202 is configured to cooperate with the slider to provide stable linear guidance for the displacement of the movable roller 2, avoid adjustment deviation, and improve adjustment accuracy; Furthermore, a concave frame 203 is provided to support the movable roller 2, and with the guidance of the linear guide rail 202, the movable roller 2 can withstand the impact tension of the copper tube during high-speed feeding, thus improving the stability of use. Furthermore, by using the low-friction engagement between the linear guide 202 and the slider, the moving resistance is reduced, the displacement response speed of the movable roller 2 is improved, and the speed deviation between the feeding frame and the forming machine 5 can be quickly compensated, avoiding adjustment lag. Furthermore, by setting up modular linear guides 202 and sliders, assembly is simple and maintenance costs are reduced; Preferably, the concave frame 203 has a U-shaped structure with its opening facing the material control panel 102. It has symmetrical mounting holes at both ends of its bottom. The movable roller 2 is rotatably connected to the mounting hole through a deep groove ball bearing. The axes of the two movable rollers 2 are parallel to each other and perpendicular to the axis of the fixed roller 201. Preferably, the linear guide 202 is a ball linear guide, which has a low coefficient of friction and high positioning accuracy, thus improving adjustment stability; Preferably, the slider and the concave frame 203 are fixed by high-strength bolts to prevent the concave frame 203 from deflecting during the displacement process and to ensure the synchronization of the two movable rollers 2; Preferably, the concave frame 203 is made of lightweight, high-strength aluminum alloy, which, while ensuring structural rigidity, further reduces the load at the end of the feeding arm 1 and improves the adjustment response speed.

[0026] Based on the above embodiments, the detection mechanism includes a laser sensor 7, and a connecting frame 701 is fixedly connected to one side of the laser sensor 7. The connecting frame 701 is bolted to the center position of the concave frame 203.

[0027] In this embodiment, by fixing the laser sensor 7 to the center of the concave frame 203 and moving synchronously with the movable roller 2, the detection point and the adjustment point are always kept relatively fixed, realizing synchronous response of detection and adjustment, and improving the accuracy of angle correction. Preferably, the laser sensor 7 is a laser profile sensor, and the detection direction is perpendicular to the tube body inlet direction, which facilitates the acquisition of copper tube offset and feed angle. Preferably, the connecting frame 701 is an L-shaped lightweight metal bracket, one end of which is fixed to the housing of the laser sensor 7 by bolts, and the other end is detachably connected to the center position of the concave frame 203 by fastening bolts, so as to ensure that the detection center of the laser sensor 7 corresponds to the tube body; Preferably, the laser sensor 7 can establish a signal connection with the control unit through a wireless transmission module to transmit detection data in real time.

[0028] Based on the above embodiments, the detection mechanism includes a force sensor, which is disposed on the top of the movable roller 2.

[0029] In this embodiment, a force sensor is set to monitor the pressure of the copper tube on the movable roller 2 in real time. When the pressure exceeds the standard, such as when the copper tube is stuck or the angle is seriously deviated, the control unit can be quickly triggered to make adjustments to avoid scratching or deformation of the copper tube. This is suitable for processing thin-walled internally threaded tubes. Furthermore, a laser sensor 7 is set to detect the position and angle of the copper tube, and a force sensor is set to detect the force on the movable roller 2. The combination of the two forms a double closed-loop detection, which improves the comprehensiveness and accuracy of the detection. Preferably, the force sensor is a miniature high-precision pressure sensor, including but not limited to strain gauge pressure sensors.

[0030] Based on the above embodiment, a lever 204 is provided at the top center of the concave frame 203, and a transverse groove 103 is provided through the center of the material control panel 102. A drive ring 104 is provided on the side of the material control panel 102 that is connected to the material feeding arm 1. A swing rod 105 is fixedly connected to one end of the drive ring 104. A limiting groove is provided at the center of the swing rod 105. The limiting groove is provided along the length direction of the swing rod 105. The swing rod 105 passes through the transverse groove 103, and the limiting groove is sleeved on the outside of the lever 204.

[0031] Specifically, the drive mechanism 4 drives the drive ring 104 to rotate at a fixed angle. When the drive ring 104 rotates, it synchronously drives the swing rod 105 to swing around the center of the drive ring 104. The swing rod 105 passes through the horizontal groove 103 of the material control panel 102. During the swinging process, the limiting groove inside the swing rod 105 slides relative to the lever 204 at the top of the concave frame 203. At the same time, the lever 204 applies a horizontal thrust to the concave frame 203. Under the action of the thrust, the concave frame 203 moves back in a straight line along the linear guide rail 202, thereby driving the movable rollers 2 at both ends of the bottom to move synchronously. In this embodiment, by setting a linkage structure of drive ring 104, swing arm 105 and lever 204, the complex transmission components are replaced, reducing transmission loss, improving transmission efficiency, enhancing adjustment sensitivity, simplifying the structure, making equipment maintenance more convenient, and centrally arranged at the junction of material control panel 102 and feeding arm 1, the structure is compact and does not occupy feeding space, does not interfere with the normal passage of copper tube, and further reduces the load at the end of feeding arm 1. Preferably, a wear-resistant sliding bushing is provided on the outer side of the lever 204 to reduce the friction with the limiting groove of the rocker arm 105, avoid component wear, and improve service life; Preferably, the two ends of the transverse groove 103 are bolted with elastic buffer blocks 8, which are triangular in shape and the inclined surface is adapted to the swing angle of the swing rod 105 to prevent the swing rod 105 from generating rigid collision and protect the transmission structure. Preferably, the swing arm 105 is made of aluminum alloy for further weight reduction, to avoid deformation during swinging and to ensure accurate displacement transmission. Preferably, a detachable flat arc-shaped protective cover 10 is bolted to one side surface of the material control panel 102. The arc-shaped contour of the protective cover 10 matches the swing range of the swing arm 105. An opening is provided at the bottom to facilitate the displacement of the lever 204. The entire cover is placed outside the swing arm 105 and the transverse groove 103, enclosing the swing area of ​​the swing arm 105, thereby preventing the swing arm 105 from interfering with the outside world during swing and improving the safety of use. Furthermore, the protective cover 10 is made of thin stainless steel plate, which is lightweight, rigid, and not easily deformed.

[0032] In this embodiment, an angle expansion mechanism is also provided in addition to the original adjustment mechanism, as detailed below: The other side of the material control panel 102 is bolted with symmetrically arranged hinge seats 3. The hinge seats 3 are respectively arranged on the upper and lower sides of the transverse groove 103. A hinge shaft 301 is arranged between the hinge seats 3. A round end seat 106 is arranged at one end of the feeding arm 1. The round end seat 106 is arranged between the hinge seats 3. The hinge shaft 301 passes through the round end seat 106 and is rotatably connected to it.

[0033] Specifically, an extension mechanism and movable roller 2 form a two-stage angle adjustment system. When there is a small angle deviation during normal feeding of the tube body, movable roller 2 is displaced along linear guide rail 202, and material control panel 102 remains stationary relative to feeding arm 1, achieving high-precision and rapid correction. When the angle deviation of the copper tube feeding is too large, and movable roller 2 cannot fully adapt and correct even when its displacement reaches the limit of its stroke, material control panel 102 forms a stable rotating pair with the round end seat 106 of feeding arm 1 through the upper and lower symmetrical hinge seats 3 and hinge shaft 301, and swings directionally around hinge shaft 301, thereby expanding the angle adjustment range of the overall device and further avoiding the limitation of the adjustment range of movable roller 2. The precise fine adjustment of movable roller 2 and the swing of material control panel 102 complement each other to ensure adjustment accuracy and response speed under normal working conditions, and achieve full-range coverage adaptation when there is a large angle deviation, with a wide range of adaptable angles. In this embodiment, a rotating connection structure of symmetrical hinge seat 3, round end seat 106 and hinge shaft 301 is set to realize small-amplitude swing of material control panel 102, while the main body of material feeding arm 1 remains fixed, thus avoiding increasing mechanism inertia and adjustment lag. Furthermore, a rotating structure with hinge connection is set up, which is simple, reliable, and low in cost. The bolt-fixed hinge seat 3 further facilitates disassembly and maintenance. Preferably, a miniature needle roller bearing is provided between the round end seat 106 and the hinge shaft 301 to reduce rotational friction and ensure smooth swing without jamming.

[0034] Based on the above embodiment, a torsion spring is provided on the outside of the hinge shaft 301, and the torsion spring controls the material control panel 102 to be perpendicular to the feeding arm 1.

[0035] In this embodiment, in the initial state, the torsion spring on the hinge shaft 301, through pre-tightening torque, makes the material control panel 102 perpendicular to the feeding arm 1, providing a fixed centering guide reference for copper tube feeding, and when the feeding angle deviation is eliminated, the torsion spring facilitates automatic reset, preventing the material control panel 102 from tilting. Preferably, one end of the torsion spring abuts against the hinge seat 3, and the other end abuts against the round end seat 106 of the feeding arm 1. Through the action of the pre-tightening torque, the material control panel 102 is kept perpendicular to the feeding arm 1 when there is no external lateral force.

[0036] Based on the above embodiments, the transmission mechanism includes a drive shaft 401, which passes through the inner side of the feeding arm 1 and is driven to rotate by the drive mechanism 4. The inner side of the round end seat 106 is provided with an adaptation cavity. One end of the drive shaft 401 is fixedly connected to a bevel gear 402. The bottom of the bevel gear 402 is meshed with a bevel gear 403. The hinge shaft 301 passes through the bevel gear 403 and is fixedly connected to it. The hinge shaft 301 passes through the drive ring 104 and is fixedly connected to it. One end of the round end seat 106 is provided with an opening slot, and the rocker arm 105 moves in the opening slot.

[0037] Specifically, after the equipment is started, the drive mechanism 4 drives the drive shaft 401 to rotate in both directions. The drive shaft 401 drives the hinge shaft 301 to rotate synchronously with the drive ring 104 through the vertical meshing of the first bevel gear 402 and the second bevel gear 403. This drives the swing arm 105 to swing around the hinge shaft 301. The swing arm 105 cooperates with the lever 204 on the top of the concave frame 203 through the limiting groove, pushing the concave frame 203 to make linear displacement along the linear guide rail 202, thereby driving the movable roller 2 to move synchronously. At this time, the detection mechanism collects the copper tube angle and force signal in real time. The control unit accurately controls the rotation angle of the drive shaft 401 according to the deviation, so that the movable roller 2 is moved to the corresponding position to correct the copper tube angle deviation. During this process, the torsion spring is kept in a pre-tight state, and the material control panel 102 is perpendicular to the feeding arm 1. When the detection mechanism detects that the angle deviation of the copper tube is too large and the movable roller 2 is displaced to the travel limit of the linear guide rail 202, the swing arm 105 contacts the buffer block 8. At this time, the swing arm 105 can no longer push the movable roller 2 to move. If the drive shaft 401 continues to rotate, the swing arm 105 will continue to apply a thrust. This thrust is transmitted to the material control panel 102 through the swing arm 105 and the buffer block 8, thereby overcoming the pre-tightening torque of the torsion spring. Under the action of the thrust, the material control panel 102 swings in a direction around the hinge shaft 301 through the hinge seat 3, further expanding the angle adjustment range until it adapts to the angle deviation of the copper tube. When the testing mechanism detects that the angle of the copper tube has returned to normal, the control unit controls the drive shaft 401 to rotate in the opposite direction, the thrust of the swing arm 105 on the buffer block 8 disappears, and the elastic reset force of the torsion spring drives the material control panel 102 to rotate quickly, thereby resetting and preparing for the next adjustment. In this embodiment, the entire operation process does not require an additional drive source or electronic control switching. The fine adjustment of the movable roller 2 is achieved through an integrated transmission structure, and then the deflection expansion of the material control panel 102 is achieved. The two are seamlessly connected, which ensures the adjustment accuracy under normal working conditions, and further avoids large angle deviations. This simplifies the structure and control, reduces costs, and improves the reliability and adaptability of the device. Furthermore, through the linkage of the bevel gear set, hinge shaft 301 and drive ring 104, the displacement of the movable roller 2 and the deflection of the material control panel 102 share the power of the same drive shaft 401. No additional drive source is required, the structure is simple, it will not further increase the load on the feeding arm 1, and it will not affect the adjustment response speed. It achieves seamless connection between the two-stage adjustment. When the movable roller 2 reaches the stroke limit, the drive shaft 401 can continue to rotate to trigger the deflection of the material control panel 102. There is no need for electronic control judgment and switching, the response is more agile, and the switching delay is avoided. Furthermore, there is no need to set up a separate programming control extension mechanism; synchronous control can be achieved simply by rotating the drive shaft 401, making control simple and convenient, and reducing the cost of later debugging and maintenance. Preferably, the drive shaft 401 horizontally passes through the inner side of the feeding arm 1, and its two ends are rotatably connected to the feeding arm 1 through rolling bearings. One end is connected to the output end of the drive mechanism 4 and is driven to rotate by it. Preferably, the inner side of the round end seat 106 is provided with an adaptation cavity for the bevel gear set, and the cavity is configured as a space for the bevel gear set to mesh and rotate; Preferably, the bevel gear set uses high-precision helical bevel gears, which have smooth meshing and low noise, and the transmission accuracy is higher than that of straight bevel gears, thus avoiding vibration during power transmission.

[0038] Preferably, the starting end of the feeding arm 1 is fixedly connected to the support column 9, and triangular reinforcing ribs are symmetrically arranged at the contact position between the support column 9 and the feeding arm 1; the bottom of the support column 9 is fixed to the feeding end of the molding machine 5, and the drive mechanism 4 is fixedly installed on the top of the support column 9. The drive mechanism 4 includes a servo motor and a right-angle reducer. When the servo motor at the top of the support column 9 is started, the torque is increased and the speed is stabilized by the right-angle reducer, which can drive the drive shaft 401 to rotate. Furthermore, the bottom of the support column 9 is fixed to the feeding end of the molding machine 5, and with the symmetrical triangular reinforcing ribs, the connection rigidity between the feeding arm 1 and the support column 9 is improved, avoiding shaking during operation and ensuring the stability of angle detection and adjustment; and the triangular reinforcing ribs are made of lightweight high-strength alloy material and are symmetrically arranged, which improves rigidity without adding too much weight.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection, the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0040] The above provides a detailed description of the device and method for detecting and adjusting the expansion angle of an internally threaded pipe according to the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. 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. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An internally threaded tube expansion angle detection adjustment device, characterized by, It includes a feeding arm and a control unit; The end of the feeding arm has a detection mechanism and an adjustment mechanism; The adjustment mechanism includes several movable rollers; The detection mechanism is used to detect the angular position of the tube body passing through the movable roller, and the movable roller adjusts the feeding angle of the tube body; The control unit includes a drive mechanism and a transmission mechanism; The drive mechanism is located at the starting end of the feeding arm, and the drive mechanism transmits power to drive the displacement of the movable roller through the transmission mechanism.

2. The device according to claim 1, wherein The end of the feeding arm is provided with a material control panel; The material control panel has a feed inlet, and fixed rollers are symmetrically arranged inside the feed inlet. The movable roller and the fixed roller are staggered and perpendicular to each other.

3. The device of claim 2, wherein: A linear guide rail is provided on one side of the material control panel, and a slider is slidably fitted on the outside of the linear guide rail. A concave frame is provided on the outside of the slider, and the movable rollers are symmetrically distributed and rotatably connected to the bottom two ends of the concave frame.

4. The device of claim 3, wherein the device further comprises a locking mechanism. The detection mechanism includes a laser sensor, and a connecting frame is fixedly connected to one side of the laser sensor. The connecting frame is bolted to the center of the concave frame.

5. The device of claim 1, wherein: The detection mechanism includes a force sensor, which is located on top of the movable roller.

6. The device of claim 3, wherein: A lever is provided at the top center of the concave frame, and a horizontal groove is provided through the center of the material control panel. A drive ring is provided on the side of the material control panel that connects with the feeding arm. A swing rod is fixedly connected to one end of the drive ring. A limit groove is provided at the center of the swing rod. The limit groove is provided along the length direction of the swing rod. The swing rod passes through the horizontal groove, and the limit groove is sleeved on the outside of the lever.

7. The device for detecting and adjusting the expansion angle of an internally threaded pipe according to claim 6, characterized in that, The other side of the material control panel is bolted with symmetrically arranged hinge seats. The hinge seats are respectively arranged on the upper and lower sides of the horizontal groove. A hinge shaft is arranged between the hinge seats. One end of the feeding arm is provided with a round end seat. The round end seat is arranged between the hinge seats. The hinge shaft passes through the round end seat and is rotatably connected to it.

8. A device for detecting and adjusting the expansion angle of an internally threaded pipe according to claim 7, characterized in that, A torsion spring is provided on the outside of the hinge shaft, and the torsion spring controls the material control panel to be perpendicular to the feeding arm.

9. A device for detecting and adjusting the expansion angle of an internally threaded pipe according to claim 7 or 8, characterized in that, The transmission mechanism includes a drive shaft that passes through the inner side of the feeding arm and is driven to rotate by the drive mechanism. The inner side of the round end seat is provided with an adaptation cavity. One end of the drive shaft is fixedly connected to a bevel gear one. The bottom of the bevel gear one is meshed with a bevel gear two. The hinge shaft passes through the bevel gear two and is fixedly connected to it. The hinge shaft passes through the drive ring and is fixedly connected to it. One end of the round end seat is provided with an opening slot. The swing rod moves in the opening slot.

10. A method for detecting and adjusting the expansion angle of an internally threaded pipe, used in the internally threaded pipe expansion angle detection and adjustment device as described in any one of claims 1 to 9, characterized in that, Includes the following steps: The angle position of the discharge tube body is detected by the detection mechanism at the end of the discharge arm; The control unit receives the detection signal and then controls the drive mechanism at the starting end of the unloading arm to move. The drive mechanism drives the movable roller to move through the transmission mechanism. The moving rollers move relative to each other, adjusting the feeding angle of the tube body, and completing the real-time detection and adjustment of the tube expansion forming angle.

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