A VAD mandrel bow curvature calibration device

Abstract

The present invention relates to the technical field of optical fiber production, and particularly relates to a VAD mandrel bow curvature calibration device. The technical problem to be solved is to overcome the defect of cutting loss caused by unqualified mandrel bow curvature in the prior art. It is mainly achieved through the following technical solutions: A VAD mandrel bow curvature calibration device includes an operation room and a workbench, and also includes a clamping device, a calibration device, and a processing device. The clamping device is used to clamp the rod body. The clamping device includes a clamping member and a rotating member. The calibration device includes a support member and a calibration member. The support member includes an adjusting frame and a support wheel. The calibration member includes a plurality of calibration frames and calibration wheels. The processing device includes a shaping member and a processing member. The shaping member includes a heating member and a shaping frame. The processing member is arranged above the workbench, rotates to heat and soften the abnormal points, reduces the excessive bow curvature on the rod body, effectively reduces the parameter fluctuations at the nodes during the subsequent wire drawing process, makes the qualification rate of the rod body higher, and reduces the cutting loss.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber production, and particularly relates to a VAD mandrel bow calibration device. Background Art

[0002] Optical fiber is the abbreviation of optical fiber waveguide, which is a fiber made of glass or plastic and can be used as an optical conduction tool. The production of optical fiber requires a preform to be made at high temperature first, then heated and softened in a high-temperature furnace, drawn into filaments, and then coated and sheathed to form an optical fiber core wire. In the process of manufacturing the base material of the optical fiber preform, the VAD (Vapour Axial Deposition) process is considered the main technical means to reduce the production cost of the optical fiber preform base material due to many factors such as high deposition rate, relatively low requirement for raw material purity, and suitability for large-scale production.

[0003] In the prior art, due to sintering deposition during the production process of the VAD mandrel, there are situations of uneven density and unstable diameter. Although the diameter of the mandrel can be controlled and adjusted during the subsequent stretching process, the VAD mandrels with excessive bow need to be cut off. Therefore, the excessive bow caused by length and heat is likely to increase the cutting loss of the VAD mandrel. In order to reduce the cutting loss, the present application designs a VAD mandrel bow calibration device, which can calibrate the bow of the loss part that needs to be cut off due to unqualified bow, thereby reducing the cutting loss and improving the qualification rate of the VAD mandrel. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of cutting loss caused by unqualified mandrel bow in the prior art, and thus provide a VAD mandrel bow calibration device.

[0005] The above technical object of the present invention is achieved by the following technical solutions:

[0006] A VAD mandrel bow calibration device, including an operation room and a workbench, the workbench is arranged in the operation room, and further includes:

[0007] A clamping device, the clamping device is arranged at one end of the upper surface of the workbench, the clamping device is used for clamping a rod body, the clamping device includes a clamping member and a rotating member, the clamping member includes a chuck and jaws, the jaws are arranged in a circumferential array on the chuck and are slidably arranged along the radial direction of the chuck, the clamping member is driven by a hydraulic cylinder, and the rotating member is arranged on one side of the workbench and drives the clamping member to rotate;

[0008] Calibration device, the calibration device includes a support member and a calibration member, the support member is arranged at one end away from the clamping device and is clamped with the workbench, the support member includes an adjustment frame and a support wheel, the support wheel is positioned and rotatably installed on the adjustment frame, the calibration member includes a calibration frame and a calibration wheel, there are multiple calibration frames and they are arranged in an array along the length direction of the workbench, the calibration frame is horizontally slidably arranged on the workbench, and the calibration wheel is positioned and rotatably installed on the calibration frame;

[0009] Processing device, the processing device is arranged above the workbench, the processing device includes a shaping member and a processing member, the shaping member includes a heating member and a shaping frame, the heating member is arranged on the shaping frame, the shaping frame is slidably arranged on the workbench, and the processing member is arranged above the workbench along the axis of the rod.

[0010] By adopting the above technical solutions, after the clamping device clamps and installs the rod, the calibration device monitors and locates the abnormal points on the rod, and then the processing device first heats and softens the rod and then coats it, ensuring the surface quality of the processed abnormal points. Integrating with PLC control, it effectively improves the overall quality of the mandrel, reduces the over-standard bowing of the rod, effectively reduces the parameter fluctuations at the nodes during the subsequent wire drawing process, makes the qualified rate of the rod higher and reduces the slitting loss.

[0011] Furthermore, each of the clamping jaws is provided with a stepped clamping groove, and washers are arranged on one side of the clamping groove close to the center of the circle.

[0012] By adopting the above technical solutions, the stepped clamping grooves with multiple different diameters cooperate with the slidable clamping jaws to adapt to rods of different sizes, improving the clamping adaptability. Washers are arranged in the clamping grooves to ensure stable clamping and avoid damaging the outer surface of the clamped part of the rod.

[0013] Furthermore, the adjustment frame includes a support frame connected to the support wheel and a lifting structure for driving the support frame. The lifting structure includes a lifting plate and a power member. The lifting plate is arranged on the top of the power member, the support frame is fixed on the lifting plate, the power member drives the lifting plate to lift and lower. The lifting structure further includes a guide rod, the guide rod penetrates through the lifting plate and is symmetrically arranged on both sides of the power member. The adjustment frame further includes an adjustment seat clamped with the workbench. Clamping edges extend inward from both sides of the bottom of the adjustment seat, and clamping grooves corresponding to the clamping edges are opened on the workbench.

[0014] By adopting the above technical solutions, the support frame supports the support wheel, and the lifting structure adjusts the height of the support frame and the support wheel to ensure that both ends of the rod are horizontal, thereby reducing the angular deviation caused by the rotation of the rod; the power member drives the lifting plate to lift and lower, and with the vertical guidance of the guide rod, it can adjust the height of the end rod; the lateral sliding arrangement of the adjustment seat can adapt to rods with longer sizes.

[0015] Furthermore, a calibration base is provided at the bottom of the calibration frame. The calibration frames are arranged in an array on the calibration base and are slidably arranged relative to the calibration base. The calibration base includes a sliding base and an adjusting rod rotatably mounted in the sliding base. A sliding track for the sliding base to slide is provided on the workbench. The sliding track is arranged along the length direction of the workbench. The adjusting rod is arranged along the length direction of the sliding base. A rotating motor is provided at one end of the adjusting rod. The bottom of the calibration frame is threadedly connected to the adjusting rod. A gravity sensor is also provided on the calibration wheel.

[0016] By adopting the above technical solution, the calibration frame drives the calibration wheel at the top to slide in the sliding base, which can adjust the density of detection points within a certain length, thereby adjusting the accuracy and precision of detecting the bow. The closer the distance between the calibration bases, the higher the detection frequency of the corresponding points, and thus the higher the detection precision. The gravity sensor provided on the calibration wheel can detect the abnormal bow, and then feedback a pressure signal to the control device, and then operate the heating element to heat and soften this place.

[0017] Furthermore, a moving member is provided below the sliding base. The moving member drives the sliding base to slide. The moving member includes a driving motor, a connecting rod structure, and a driving plate. The driving motor is connected to the connecting rod structure and drives the connecting rod structure to rotate. A plurality of driving plates are vertically fixed at the top of the connecting rod structure. The driving plates are arranged in an array at the top of the connecting rod structure. A plurality of spacer plates are provided below the sliding base and are matched with the driving plates.

[0018] By adopting the above technical solution, the moving member operates the calibration frames with the same spacing to move a fixed distance. The distance between the spacer plates is the distance that the sliding base moves each time the moving member operates. It can detect the rod body in a fixed direction and at a fixed distance, and can be increased or decreased according to requirements during actual operation.

[0019] Furthermore, the connecting rod structure includes a fixed rod, an intermediate rod, and a linkage rod. The fixed rod is fixed in the workbench. The two ends of the fixed rod are respectively hinged to different intermediate rods. The end of the intermediate rod away from the fixed rod is hinged to the linkage rod. The bottom of the linkage rod is hinged to the intermediate rod and the top is fixed to the driving plate. The driving plates are arranged in an array along the length direction at the top of the linkage rod. A plurality of driving motors are provided corresponding to the intermediate rods and drive the corresponding intermediate rods to rotate. The driving motors are fixed on one side of the fixed rod and drive the intermediate rods to rotate.

[0020] By adopting the above technical solution, the driving motor rotates to drive the intermediate rod to rotate. The intermediate rod is hinged to the linkage rod, so that the linkage rod reciprocates. The movement track of the end point of the linkage rod is circular.

[0021] Further, the calibration piece further includes an infrared detection piece, and the infrared detection piece is arranged on the workbench; a control device is further arranged on one side of the workbench, the control device is a programmable logic controller, and the control device is signal-controlled and connected to the rotation motor, the driving motor, the gravity sensor and the infrared detection piece.

[0022] By adopting the above technical solution, the infrared detection piece assists the gravity sensor in detection, ensures the accuracy of the bow curvature detection result and precisely softens and adjusts the points, thereby reducing or even eliminating internal stress and improving the quality of the rod body. The cooperation of the programmable logic controller with multiple power components and induction devices can reduce data errors and achieve intelligent control.

[0023] Further, the control device is also signal-controlled and connected to the shaping piece. A shaping track for the shaping frame to slide is opened on the workbench. The shaping track is arranged side by side with the sliding track and is parallel to the sliding track. The shaping frame is rotationally connected to the heating piece. The heating piece includes a heating torch and a heating frame. The heating frame is clamped and arranged with the heating torch. The heating torch is a hydrogen-oxygen torch, and the heating frame is rotationally installed on the shaping frame.

[0024] By adopting the above technical solution, the heating piece heats the abnormal points according to the control device. During the heating process, the flame and flow rate of the heating torch can be controlled according to the abnormal point data, and the heating frame can also be adjusted in angle according to requirements, improving the adaptability of the device.

[0025] Further, the processing piece is arranged corresponding to the rod body. The processing piece includes a transverse piece and an opening and closing piece. The opening and closing piece is arranged on the transverse piece. The transverse piece drives the opening and closing piece to slide above the workbench. The transverse piece includes a transverse rod fixed in the operation room and a transverse block sliding on the transverse rod. The opening and closing piece is connected to the transverse block.

[0026] By adopting the above technical solution, for the part where the abnormal points have been detected, the transverse piece drives the opening and closing piece to slide and closes and wraps the point to ensure the surface quality.

[0027] Further, the opening and closing pieces are symmetrically arranged about the axis of the rod body. The opening and closing piece includes an opening and closing drive and opening and closing claws. The opening and closing claws are arranged in pairs and are arc-shaped near the bottom. Quartz wool is arranged on the inner side of the mutually approaching sides of the opening and closing claws.

[0028] By adopting the above technical solution, the opening and closing drive controls the opening and closing claws to avoid structural interference during the movement and avoid knocking the surface of the rod body. The quartz wool prevents the opening and closing claws from directly contacting the surface of the rod body and reduces surface damage caused by excessive clamping force.

[0029] In summary, the technical solution of the present invention has the following advantages:

[0030] 1. The VAD mandrel bow curvature calibration equipment provided by the present invention is integrally combined with PLC control, which effectively improves the overall quality of the mandrel, reduces the over-standard parts of the bow curvature on the rod body, effectively reduces the parameter fluctuations at the nodes during the subsequent wire drawing process, makes the qualified rate of the rod body higher and reduces the slitting loss.

[0031] 2. The VAD mandrel bow curvature calibration equipment provided by the present invention has a calibration frame driving the calibration wheel at the top to slide within the sliding base, which can adjust the density of detection points within a certain length, thereby adjusting the accuracy and precision of detecting the bow curvature. The closer the distance between the calibration seats, the higher the detection frequency of the corresponding points, and thus the higher the detection accuracy; it can detect the rod body in a directional and fixed-distance manner, and can be increased or decreased according to requirements during actual operation.

[0032] 3. The VAD mandrel bow curvature calibration equipment provided by the present invention, for the parts where the abnormal points have been detected, the transverse member drives the opening and closing member to slide and wrap the point to ensure the surface quality; the quartz wool avoids the direct contact between the opening and closing claws and the surface of the rod body, avoiding bumping or damaging the surface of the rod body by force. Description of the Drawings

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic diagram of the overall structure of a VAD mandrel bow curvature calibration equipment provided in an embodiment of the present invention;

[0035] Figure 2 It is a partial structural schematic diagram of the clamping device and the processing device provided in an embodiment of the present invention;

[0036] Figure 3 It is a partial structural schematic diagram of the support member provided in an embodiment of the present invention;

[0037] Figure 4 It is a partial structural schematic diagram of the calibration member provided in an embodiment of the present invention;

[0038] Figure 5 It is a partial structural schematic diagram of the calibration member provided in an embodiment of the present invention.

[0039] Description of the Reference Numerals:

[0040] 1. Operating room; 11. Control device; 2. Workbench; 21. Card slot; 22. Sliding track; 23. Shaping track; 3. Clamping device; 31. Clamping member; 311. Chuck; 312. Claw; 3121. Clamping groove; 3122. Washer; 32. Rotating member; 4. Calibration device; 5. Support member; 51. Adjusting frame; 511. Support frame; 512. Lifting structure; 5121. Lifting plate; 5122. Power member; 5123. Guide rod; 513. Adjusting seat; 5131. Clamping edge; 52. Support wheel; 6. Calibration member; 61. Calibration frame; 611. Calibration seat; 612. Sliding base; 6121. Spacer; 613. Positioning rod; 614. Rotating motor; 62. Calibration wheel; 621. Gravity sensor; 63. Moving member; 631. Driving motor; 632. Linkage structure; 6321. Fixed rod; 6322. Intermediate rod; 6323. Linking rod; 63231. Driving plate; 64. Infrared detection member; 7. Processing device; 8. Shaping member; 81. Heating member; 811. Heating torch; 812. Heating frame; 82. Shaping frame; 9. Processing member; 91. Transverse member; 911. Transverse rod; 912. Transverse block; 92. Opening and closing member; 921. Opening and closing drive; 922. Opening and closing claw. Detailed implementation manner

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] A VAD mandrel bow curvature calibration device, as Figure 1 shown, includes an operating time and a workbench 2. The workbench 2 is arranged in the operating room 1, and further includes a clamping device 3, a calibration device 4 and a processing device 7. The clamping device 3 is arranged at the left end of the upper surface of the workbench 2. The clamping device 3 is used for clamping the rod body. The clamping device 3 includes a clamping member 31 and a rotating member 32. The calibration device 4 includes a support member 5 and a calibration member 6. The support member 5 is arranged at the right end of the workbench 2 and is clamped with the workbench 2. The calibration member 6 is arranged below the rod body. The processing device 7 is arranged above the workbench 2. The processing device 7 includes a shaping member 8 and a processing member 9.

[0043] After the clamping device 3 clamps and installs the rod body, the calibration device 4 monitors and locates the abnormal points on the rod body, and then the processing device 7 first heats and softens the rod body and then coats it to ensure the surface quality of the processed abnormal points. Integrally combined with PLC control, the overall quality of the mandrel is effectively improved, the bow curvature exceeding the standard on the rod body is reduced, the qualification rate of the VAD mandrel is higher and the slitting loss is reduced. It can improve the deposition length of the subsequent OVD optical rod, improve the quality of the RIC optical rod and effectively reduce the number of nodes, and effectively reduce the parameter fluctuation at the nodes during the subsequent wire drawing process.

[0044] AsFigure 1 and Figure 2 As shown in Figure 2 , the clamping member 31 includes a chuck 311 and a jaw 312. The jaws 312 are arranged in a circumferential array on the chuck 311 and are slidably arranged along the radial direction of the chuck 311. The clamping member 31 is driven by a hydraulic cylinder, that is, the jaws 312 can be driven by the hydraulic cylinder to approach or move away from the center of the chuck 311. A stepped clamping groove 3121 is provided on each jaw 312, and a washer 3122 is provided on the side of the clamping groove 3121 close to the center of the circle. The stepped clamping grooves 3121 with multiple different diameters cooperate with the slidable jaws 312 to be able to adapt to bars of different sizes, improving the clamping adaptability. A washer 3122 is provided in the clamping groove 3121 to ensure stable clamping and avoid damaging the outer surface of the clamped part of the bar. The rotating member 32 is arranged above one side of the workbench 2 and drives the clamping member 31 to rotate.

[0045] As Figure 1 and Figure 2 shown in Figure 1 and Figure 2 , the processing device 7 includes a shaping member 8 and a processing member 9. The shaping member 8 includes a heating member 81 and a shaping frame 82. The heating member 81 is arranged on the shaping frame 82. The shaping frame 82 is slidably arranged on the workbench 2. The processing member 9 is arranged above the workbench 2 along the axis of the bar.

[0046] A control device 11 is also arranged on one side of the workbench 2. The control device 11 is a programmable logic controller. The control device 11 is signal-controlled and connected to the shaping member 8 and the infrared detection member 64.

[0047] A shaping track 23 for the shaping frame 82 to slide is provided on the workbench 2. The shaping track 23 is arranged in parallel with the sliding track 22 and is parallel to the sliding track 22. The shaping frame 82 is rotatably connected to the heating member 81. The heating member 81 includes a heating torch 811 and a heating frame 812. The heating frame 812 is clamped to the heating torch 811. The heating torch 811 is a hydrogen-oxygen torch. The heating frame 812 is rotatably installed on the shaping frame 82. The heating member 81 heats the abnormal point according to the control device 11. During the heating process, the flame and flow rate of the heating torch 811 can be controlled according to the abnormal point data, and the heating frame 812 can also be adjusted by rotating the angle according to the requirements, improving the adaptability of the device.

[0048] As Figure 1 and Figure 2 shown in Figure 1 and Figure 2 , the processing member 9 corresponds to the bar. The processing member 9 includes a transverse member 91 and an opening / closing member 92. The opening / closing member 92 is arranged on the transverse member 91. The transverse member 91 drives the opening / closing member 92 to slide above the workbench 2. The transverse member 91 includes a transverse rod 911 fixed in the operation room 1 and a transverse block 912 sliding on the transverse rod 911. The opening / closing member 92 is connected to the transverse block 912. For the part where the abnormal point has been detected, the transverse member 91 drives the opening / closing member 92 to slide and closes and wraps the point to ensure the surface quality.

[0049] The opening and closing member 92 is symmetrically arranged about the axis of the rod body. The opening and closing member 92 includes an opening and closing drive 921 and opening and closing claws 922. The opening and closing claws 922 are arranged in pairs and are arc-shaped near the bottom. Quartz wool is provided on the inner side of the opening and closing claws 922 where they are close to each other. The opening and closing drive 921 controls the opening and closing claws 922 to avoid structural interference during movement and avoid knocking against the surface of the rod body. The quartz wool prevents the opening and closing claws 922 from directly contacting the surface of the rod body, reducing surface damage caused by excessive clamping force.

[0050] As Figure 1 and Figure 3 shown, the support member 5 includes an adjustment frame 51 and support wheels 52. The support wheels 52 are rotatably mounted on the adjustment frame 51 in a positioned manner. The adjustment frame 51 includes a support frame 511 and a lifting structure 512. The support wheels 52 are rotatably mounted on the support frame 511 in a positioned manner. The lifting structure 512 drives the support frame 511 to move up and down. The lifting structure 512 adjusts the height of the support frame 511 and the support wheels 52 to ensure that both ends of the rod body are horizontal. The lifting structure 512 includes a lifting plate 5121 and a power member 5122. The lifting plate 5121 is arranged on the top of the power member 5122. The support frame 511 is fixed on the lifting plate 5121. The power member 5122 drives the lifting plate 5121 to lift and lower. With the vertical guidance of the guide rod 5123, the height of the end rod body can be adjusted. The lifting structure 512 further includes a guide rod 5123. The guide rod 5123 vertically penetrates the lifting plate 5121 and is symmetrically arranged on both sides of the power member 5122. The adjustment frame 51 further includes an adjustment seat 513 that is clamped to the workbench 2. The bottom of the adjustment seat 513 extends inward on both sides with clamping edges 5131. The workbench 2 is provided with clamping grooves 21 corresponding to the clamping edges 5131. The adjustment seat 513 is arranged to slide horizontally to adapt to rod bodies of longer sizes.

[0051] As Figure 1 、 Figure 4 and Figure 5 shown, the calibration member 6 includes a calibration frame 61 and calibration wheels 62. There are multiple calibration frames 61, which are arranged in an array along the length direction of the workbench 2. The calibration frames 61 are arranged to slide horizontally on the workbench 2 through calibration seats 611. The calibration wheels 62 are rotatably mounted on the calibration frames 61 in a positioned manner. A gravity sensor 621 is further provided on the calibration wheels 62. The gravity sensor 621 provided on the calibration wheels 62 can detect abnormal bowing, and thus feedback a pressure signal to the control device 11, facilitating subsequent heating operations.

[0052] The calibration base 611 is arranged at the bottom of the calibration frame 61, and all the calibration frames 61 are installed inside the calibration base 611. The calibration frames 61 are arranged in an array on the calibration base 611 and are slidably arranged relative to the calibration base 611. The calibration base 611 includes a sliding base 612 and an adjusting rod 613 that is rotationally positioned and installed inside the sliding base 612. A sliding track 22 for the sliding base 612 to slide is provided on the workbench 2, and the sliding track 22 is arranged along the length direction of the workbench 2. The adjusting rod 613 is arranged along the length direction of the sliding base 612. One end of the adjusting rod 613 is provided with a rotating motor 614, and the rotating motor 614 is also fixed on the sliding base 612. The calibration frame 61 is sleeved on the adjusting rod 613 and is threadedly connected to the adjusting rod 613. The rotating motor 614 moves to control the mutual separation or approach between different calibration frames 61. The distance between the calibration frames 61 is equal during movement. Therefore, the distance between the calibration frames 61 can be adjusted by the rotating motor 614, so as to control the density detected by the calibration wheel 62, and further achieve the purpose of detecting the accuracy and precision of the camber. The closer the distance between the calibration bases 611, the higher the detection frequency of the corresponding points, and thus the higher the detection precision.

[0053] As Figure 4 and Figure 5 shown, a moving member 63 is further arranged below the sliding base 612. The moving member 63 drives the sliding base 612 to slide laterally. The moving member 63 includes a driving motor 631, a connecting rod structure 632, and a driving plate 63231. The driving motor 631 is connected to the connecting rod structure 632 and drives the connecting rod structure 632 to rotate. A plurality of driving plates 63231 are vertically fixed at the top of the connecting rod structure 632. The driving plates 63231 are arranged in an array at the top of the connecting rod structure 632. A plurality of spacer plates 6121 that cooperate with the driving plates 63231 are arranged below the sliding base 612. The moving member 63 operates the calibration frames 61 with the same spacing to move a fixed distance. The distance between the spacer plates 6121 is the distance that the sliding base 612 moves each time the moving member 63 operates, and it can detect the rod body in a fixed direction and at a fixed distance, which can be increased or decreased according to requirements during actual operation.

[0054] The connecting rod structure 632 includes a fixed rod 6321, an intermediate rod 6322, and a linkage rod 6323. The fixed rod 6321 is fixed inside the workbench 2. Both ends of the fixed rod 6321 are respectively hinged to different intermediate rods 6322. One end of the intermediate rod 6322 away from the fixed rod 6321 is hinged to the linkage rod 6323. The bottom of the linkage rod 6323 is hinged to the intermediate rod 6322 and the top is fixed to the driving plate 63231. A plurality of driving plates 63231 are arranged in an array along the length direction at the top of the linkage rod 6323. A plurality of driving motors 631 corresponding to the intermediate rods 6322 are provided and drive the corresponding intermediate rods 6322 to rotate. The driving motors 631 are fixed on one side of the fixed rod 6321 and drive the intermediate rods 6322 to rotate.

[0055] Taking the example of driving the overall sliding base 612 to move to the right at the illustrated position, at this time, the driving plate 63231 abuts against the corresponding spacer plate 6121, and the driving plate 63231 is basically at the highest position. Then, the driving motor 631 rotates clockwise, driving the intermediate rod 6322 to rotate clockwise. As a result, the end point of the linkage rod 6323 draws a circle clockwise. The driving plate 63231 on the linkage rod 6323 first moves downward - leftward - upward - rightward, thereby pushing the previous (right - hand side) spacer plate 6121 to move to the right, achieving the purpose of the overall right - shift of the sliding base 612.

[0056] The working principle and usage method of this VAD mandrel bow calibration device: Select the corresponding stepped groove to clamp the rod according to the rod diameter, adjust the position of the support member 5 according to the rod length, and adjust the height of the rod end through the lifting structure 512; Control the distance between different calibration frames 61, move the calibration member 6 from left to right to mark the abnormal points on the rod and feedback signals to the control device 11. After marking, heat and soften the abnormal points through the heating member 81. When heating, cooperate with the infrared detection member 64 to detect the outer diameter of the rod to avoid excessive softening. After heating, continue to move to the next abnormal point until the overall bow reaches the optimal state.

[0057] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein. It should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A VAD mandrel camber calibration device, comprising an operation chamber (1) and a workbench (2), the workbench (2) is arranged in the operation chamber (1), and is characterized in that, It further includes: A clamping device (3), which is arranged at one end of the upper surface of the workbench (2). The clamping device (3) is used for clamping a rod. The clamping device (3) includes a clamping member (31) and a rotating member (32). The clamping member (31) includes a chuck (311) and clamping jaws (312). The clamping jaws (312) are arranged in a circumferential array on the chuck (311) and are slidably arranged along the radial direction of the chuck (311). The clamping member (31) is driven by a hydraulic cylinder. The rotating member (32) is arranged on one side of the workbench (2) and drives the clamping member (31) to rotate; A calibration device (4), which includes a support member (5) and a calibration member (6). The support member (5) is arranged at the end far from the clamping device (3) and is clamped with the workbench (2). The support member (5) includes an adjusting frame (51) and a support wheel (52). The support wheel (52) is rotatably mounted on the adjusting frame (51). The calibration member (6) includes a calibration frame (61) and a calibration wheel (62). There are multiple calibration frames (61) which are arranged in an array along the length direction of the workbench (2). The calibration frame (61) is slidably arranged transversely on the workbench (2). The calibration wheel (62) is rotatably mounted on the calibration frame (61); A processing device (7), which is arranged above the workbench (2). The processing device (7) includes a shaping member (8) and a processing member (9). The shaping member (8) includes a heating member (81) and a shaping frame (82). The heating member (81) is arranged on the shaping frame (82). The shaping frame (82) is slidably arranged on the workbench (2). The processing member (9) is arranged above the workbench (2) along the axis of the rod.

2. The VAD mandrel camber calibration device according to claim 1, characterized in that Each of the clamping jaws (312) is provided with a stepped clamping groove (3121), and a washer (3122) is arranged on the side of the clamping groove (3121) close to the center of the circle.

3. The VAD mandrel camber calibration device according to claim 2, wherein, The adjusting frame (51) includes a support frame (511) connected to the support wheel (52) and a lifting structure (512) for driving the support frame (511). The lifting structure (512) includes a lifting plate (5121) and a power member (5122). The lifting plate (5121) is arranged on the top of the power member (5122). The support frame (511) is fixed on the lifting plate (5121). The power member (5122) drives the lifting plate (5121) to lift. The lifting structure (512) further includes a guide rod (5123), which penetrates through the lifting plate (5121) and is symmetrically arranged on both sides of the power member (5122). The adjusting frame (51) further includes an adjusting seat (513) clamped with the workbench (2). The bottom of the adjusting seat (513) extends inward on both sides with clamping edges (5131), and the workbench (2) is provided with clamping grooves (21) corresponding to the clamping edges (5131).

4. A VAD mandrel camber calibration device according to claim 1, wherein A calibration base (611) is further provided at the bottom of the calibration frame (61). The calibration frames (61) are arranged in an array on the calibration base (611) and are slidably arranged relative to the calibration base (611). The calibration base (611) includes a sliding base (612) and an adjusting rod (613) which is positioned and rotatably installed in the sliding base (612). A sliding track (22) for the sliding base (612) to slide is provided on the workbench (2). The sliding track (22) is arranged along the length direction of the workbench (2). The adjusting rod (613) is arranged along the length direction of the sliding base (612). A rotating motor (614) is provided at one end of the adjusting rod (613). The bottom of the calibration frame (61) is threadedly connected to the adjusting rod (613). A gravity sensor (621) is further provided on the calibration wheel (62).

5. A VAD mandrel camber calibration device according to claim 4, characterized in that, A moving member (63) is further provided below the sliding base (612). The moving member (63) drives the sliding base (612) to slide. The moving member (63) includes a driving motor (631), a connecting rod structure (632) and a driving plate (63231). The driving motor (631) is connected to the connecting rod structure (632) and drives the connecting rod structure (632) to rotate. A plurality of driving plates (63231) are vertically fixed at the top of the connecting rod structure (632). The driving plates (63231) are arranged in an array at the top of the connecting rod structure (632). A plurality of spacer plates (6121) which cooperate with the driving plates (63231) are provided below the sliding base (612).

6. The VAD mandrel camber calibration device according to claim 5, wherein, The connecting rod structure (632) includes a fixed rod (6321), an intermediate rod (6322) and a linkage rod (6323). The fixed rod (6321) is fixed in the workbench (2). The two ends of the fixed rod (6321) are respectively hinged to different intermediate rods (6322). The end of the intermediate rod (6322) far from the fixed rod (6321) is hinged to the linkage rod (6323). The bottom of the linkage rod (6323) is hinged to the intermediate rod (6322) and the top is fixed to the driving plate (63231). The driving plates (63231) are arranged in an array along the length direction at the top of the linkage rod (6323). A plurality of driving motors (631) corresponding to the intermediate rods (6322) are provided and drive the corresponding intermediate rods (6322) to rotate. The driving motor (631) is fixed on one side of the fixed rod (6321) and drives the intermediate rod (6322) to rotate.

7. A VAD mandrel camber calibration device according to claim 6, wherein The calibration member (6) further includes an infrared detection member (64). The infrared detection member (64) is provided on the workbench (2). A control device (11) is further provided on one side of the workbench (2). The control device (11) is a programmable logic controller. The control device (11) is signal-controlled and connected to the rotating motor (614), the driving motor (631), the gravity sensor (621) and the infrared detection member (64).

8. A VAD mandrel camber calibration device according to claim 7, characterized in that The control device (11) is also signal - controlled and connected to the shaping member (8). A shaping track (23) for the shaping frame (82) to slide is provided on the workbench (2). The shaping track (23) is arranged in parallel with and is parallel to the sliding track (22). The shaping frame (82) is rotatably connected to the heating member (81). The heating member (81) includes a heating blowtorch (811) and a heating frame (812). The heating frame (812) is snap - connected to the heating blowtorch (811). The heating blowtorch (811) is a hydrogen - oxygen blowtorch, and the heating frame (812) is rotatably installed on the shaping frame (82).

9. The VAD mandrel camber calibration device according to claim 8, wherein: The processing member (9) is arranged corresponding to the rod body. The processing member (9) includes a transverse member (91) and a clamping member (92). The clamping member (92) is arranged on the transverse member (91). The transverse member (91) drives the clamping member (92) to slide above the workbench (2). The transverse member (91) includes a transverse rod (911) fixed in the operation room (1) and a transverse block (912) sliding on the transverse rod (911). The clamping member (92) is connected to the transverse block (912).

10. A VAD mandrel camber calibration device according to claim 9, characterized in that: The clamping member (92) is symmetrically arranged about the axis of the rod body. The clamping member (92) includes a clamping drive (921) and clamping claws (922). The clamping claws (922) are arranged in pairs and are arc - shaped near the bottom. The clamping drive (921) drives the clamping claws (922) to approach or separate from each other. Quartz wool is arranged on the side where the clamping claws (922) approach each other.

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