Laser measuring device for bending angle of bending piece

Abstract

The invention discloses a bending angle laser measuring device for a bending piece, and relates to the technical field of laser measurement, the bending angle laser measuring device comprises a detection table, a driving mechanism, a movable rod, a receiver, a laser head, a control panel and a bending pipe, the top of the detection table is provided with a first sliding groove in a penetrating manner, and the inner wall of the first sliding groove is in fit sliding connection with a mounting seat. When laser measurement is carried out on a bent part, a spiral groove is matched with a fixing bead, a rotary handle is rotated to drive an adjusting disc to move, four fixing strips protrude out of a telescopic groove through a connecting rod and a diffusion groove, a pipe is fixed from the interior, and continuous scanning and precision of laser are guaranteed; lifting, rotating, overturning and surface changing of the pipe are achieved, double-face data collection is completed through single-time clamping, and efficiency and data reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser measurement, and particularly to a laser measurement device for the bending angle of a bent part. Background Art

[0002] A bent part is a workpiece formed by bending metal or non-metal pipes, plates, etc. into specific angles or shapes through machining, and is widely used in fields such as automobile manufacturing (such as exhaust pipes, chassis structures), rail transit (such as brake pipes, car body frames), aerospace (such as hydraulic pipelines), and construction machinery. The accuracy of the bending angle of the bent part directly determines the assembly accuracy and performance stability of the workpiece. Traditional manual inspection relies on vernier calipers and angle gauges, with low efficiency and easy to miss inspections. Currently, laser measurement technology has become a research hotspot due to its non-contact and high-precision characteristics.

[0003] For example, Chinese Patent "CN118533104A" discloses a bending angle measurement device for train pipe fittings. This angle measurement device can drive a laser head and a laser measurement head to move forward through a movable plate to detect the bent surface of the pipe, and can prevent the convex and concave parts of the bent surface of the pipe from affecting the bending angle measurement.

[0004] However, the existing bending angle measurement devices still have the following problems in the actual implementation process:

[0005] Since the external clamping method is usually used to clamp and detect the outside of the bent pipe, it will directly cover a local area of the pipe surface. If the incident path of the laser beam overlaps with the clamping component, the blocked area cannot receive the laser signal, thus affecting the laser measurement accuracy. In addition, during a single laser measurement process, only one side of the bent pipe can be detected, and it is impossible to calculate and verify through the bilateral symmetric feature points of the bent pipe. The unilateral data cannot form a comparison, and it is easy to produce misjudgments due to local deformation or measurement errors. If it is necessary to detect the other side, manual flipping or re-adjusting the clamping position is required, significantly reducing the laser measurement efficiency. Summary of the Invention

[0006] The purpose of the present invention is to provide a laser measurement device for the bending angle of a bent part to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides a laser measurement device for the bending angle of a bent part, including a detection table, a driving mechanism, a movable rod, a receiver, a laser head, a control panel, and a bent pipe. A chute one is penetrated through the top of the detection table, and an installation seat is slidably connected to the inner wall of the chute one in a fitting manner;

[0008] An internal clamping anti-blocking component is arranged inside the installation seat to stably fix the bent pipe from the inside during laser measurement, ensuring that the laser can scan the outer surface of the bent area of the pipe without interference;

[0009] Flip - synchronization components are provided on the outer walls on both sides of the mounting base so that during laser measurement, the operation of changing the measurement surface of the bent pipe can be automatically realized, facilitating the comparison and verification of double - sided data.

[0010] Preferably, the inner clamping and anti - shielding component includes a sleeve. The outer wall of the sleeve is rotatably connected to the inside of the mounting base. One end of the sleeve is internally threaded with a threaded rod. The end of the threaded rod away from the mounting base is fixedly connected with a rotating handle. The end of the threaded rod away from the rotating handle is rotatably connected to a shaft rod. The end of the shaft rod away from the threaded rod is fixedly connected with an adjusting disc. The outer wall of the adjusting disc is in sliding fit with the inner wall of the sleeve. A spiral groove is provided on the inner wall of the sleeve. Fixed beads are fixedly connected to the outer wall of the adjusting disc corresponding to the spiral groove, and the outer wall of the fixed beads is in sliding fit with the inner wall of the spiral groove.

[0011] Preferably, a plurality of telescopic grooves are equidistantly penetrated through the inner wall of the end of the sleeve away from the threaded rod. A fixed strip is in sliding fit with the inner wall of the telescopic groove. One end of each of the four fixed strips facing the mounting base is fixedly connected with a connecting rod. A plurality of diffusion grooves are equidistantly penetrated through the inside of the adjusting disc corresponding to the connecting rods, and the outer wall of the connecting rod is in sliding fit with the inner wall of the diffusion groove.

[0012] Preferably, the flip - synchronization component includes a first shaft column. The close ends of the two first shaft columns are fixedly connected to the outer walls on both sides of the mounting base. The far ends of the two first shaft columns are rotatably connected to a mounting frame. An inner groove is provided at the top of the mounting frame. A telescopic rod is slidably connected to the inner wall of the inner groove. One end of the telescopic rod facing the first shaft column is fixedly connected with an anti - detachment block. The outer wall of the anti - detachment block is in sliding fit with the inner wall of the inner groove. The outer wall of the far end of the telescopic rod away from the first shaft column is fixedly connected with a second shaft column. A driving groove is provided on the outer wall of the movable rod corresponding to the second shaft column, and the outer wall of the movable rod is in sliding fit with the inner wall of the driving groove.

[0013] Preferably, a fixing plate is fixedly connected to the bottom of the detection table. A support rod is fixedly connected to the inside of the fixing plate corresponding to the telescopic rod. A groove is provided on the outer wall of the telescopic rod. A first spring is fixedly connected to the inner wall of the groove. The other end of the first spring is fixedly connected with a clamping block. The outer wall of the clamping block is in sliding fit with the inner wall of the groove. One side wall of the clamping block is bevel - shaped corresponding to the support rod. A torsion spring is provided in a fitting manner on the outer wall of the first shaft column. The close ends of the two torsion springs are fixedly connected to the outer walls on both sides of the mounting base. The far ends of the two torsion springs are fixedly connected to the close side walls of the two mounting frames.

[0014] Preferably, a third chute is provided on the outer wall of the mounting base away from the bent pipe, and a sliding rod is fitted and slidably connected to the inner wall of the third chute. A second spring is fixedly connected to the bottom of the sliding rod, and the bottom of the second spring is fixedly connected to the inner wall of the third chute. A toothed rod is fixedly connected to the end of the sliding rod away from the bent pipe. A gear is fixedly connected to the outer wall of the sleeve corresponding to the toothed rod, and one side of the gear is meshed and matched with one side wall of the toothed rod. A second chute is penetrated and provided on the top of the inspection table, and the outer wall of the toothed rod is fitted and slidably connected to the inner wall of the second chute. A limiting plate is fixedly connected to the bottom of the toothed rod. A temporary friction increasing member is provided on the outer wall of the mounting base facing the bent pipe.

[0015] Preferably, the temporary friction increasing member includes a support block. The end portions of the two support blocks close to each other are symmetrically and fixedly connected to the outer wall of the sleeve. A sliding cylinder is slidably connected inside the support block, and a pressing block is fixedly connected to the end of the sliding cylinder facing the bent pipe. The outer wall of the pressing block away from the sliding cylinder is beveled. The side walls of the two pressing blocks close to each other are fitted and slidably connected to the outer wall of the sleeve. A clamping groove is provided at the end of the two sliding cylinders away from the pressing block, and a third spring is fixedly connected to the inner wall of the clamping groove. The other end of the third spring is fixedly connected to a top column, and the outer wall of the top column is fitted and slidably connected to the inner wall of the clamping groove.

[0016] Preferably, semi-circular rings are symmetrically and fixedly connected to the outer wall of the mounting base facing the bent pipe corresponding to the top columns, and inclined grooves are provided on the upper and lower end faces of the semi-circular rings corresponding to the top columns.

[0017] Preferably, the two driving mechanisms are symmetrically installed on the upper surfaces of both sides of the inspection table. The two movable rods are respectively installed in the two driving mechanisms. A plurality of receivers are installed on one side of one of the movable rods, and a plurality of laser heads are installed on one side of the other movable rod. The control panel is installed on the outer wall of one of the movable rods. Limiting grooves are symmetrically provided on the top of the inspection table corresponding to the movable rods.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. When measuring the bent pipe, the two movable rods are synchronously driven by the driving mechanism to move from one end of the bent pipe to the other end. At this time, the receiver and the laser head are controlled to start through the control panel. When the beam irradiated by the laser head contacts one side bending surface of the bent pipe, the data of the contact point between the beam irradiated by the laser head and the bending surface of the bent pipe is transmitted to the display screen of the control panel for display. As the movement of the laser head and the receiver is completed, all the contact points of the bending surface of the bent pipe are measured and displayed at the terminal to complete the measurement of the bending angle of the pipe.

[0020] 2. When performing laser measurement on the bent part, through the cooperation of the spiral groove and the fixed beads, when rotating the rotary handle, the adjustment disk can be driven to rotate and move. At the same time, through the cooperation of the connecting rod and the diffusion groove, the four fixed bars can be synchronously driven to protrude from the telescopic groove, so as to achieve stable fixation from the inside of the bent pipe, ensure that the laser can scan the outer surface of the pipe bending area without interference, ensure the complete acquisition required for angle calculation, realize the continuous detection of laser measurement, and is beneficial to ensuring the laser measurement accuracy.

[0021] 3. When performing laser measurement on the bent part, after the measurement on one side of the bent pipe is completed, through the cooperation of the telescopic rod and the support rod, the bent pipe can be first lifted, and through the cooperation of the toothed rod and the limit plate, the bent pipe can be driven to lift and rotate 180 degrees after lifting a certain height, realizing the operation of turning over and changing the surface, so as to conveniently perform laser measurement operation on the other side of the bent pipe during the return movement. The double-sided data acquisition can be completed with a single clamping, avoiding the time loss of repeated positioning. The double-sided data can be directly compared and verified to identify the possible local differences in the single-sided detection, which is beneficial to improving the laser measurement efficiency and data reliability.

[0022] 4. When performing laser measurement on the bent part, in order to avoid the relative displacement between the pipe and the fixed bar caused by the inertial force during rotation, through the cooperation of the two semi-circular rings and the top column, during the rotation process, the connection strength between the bent pipe and the sleeve can be temporarily increased to ensure the accuracy of the 180-degree flip, and further ensure the accuracy of the bilateral symmetry feature detection of the bent pipe. In addition, during the non-rotation stage, the additional clamping pressure is released, and only the basic fixing force of the internal clamping is retained to prevent the bent pipe from generating plastic deformation due to excessive clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic side view structure diagram of the whole of the present invention;

[0025] Figure 3 It is a schematic structure diagram of the movement relationship between the bent pipe and the sleeve of the present invention;

[0026] Figure 4 For the present invention Figure 3 The enlarged structure diagram at A in;

[0027] Figure 5 It is a schematic structure diagram of the movement relationship between the movable rod and the telescopic rod of the present invention;

[0028] Figure 6 For the present invention Figure 5 The enlarged structure diagram at A in;

[0029] Figure 7 Structural schematic diagram of the installation relationship between the mounting base and the toothed rod of the present invention;

[0030] Figure 8 Structural schematic diagram of the temporary friction increasing component of the present invention.

[0031] In the figure: 1, detection table; 2, first chute; 3, mounting base; 7, driving mechanism; 8, movable rod; 9, receiver; 10, laser head; 11, control panel; 12, limiting groove; 13, driving groove; 14, second chute; 15, bent pipe; 4, inner clamping and shielding component; 401, sleeve; 402, threaded rod; 403, rotating handle; 404, shaft rod; 405, adjusting disc; 406, spiral groove; 407, fixing bead; 408, telescopic groove; 409, fixing strip; 410, connecting rod; 411, diffusion groove; 5, flipping synchronization component; 501, first shaft column; 502, mounting frame; 503, inner groove; 504, telescopic rod; 505, anti - detachment block; 506, second shaft column; 507, fixing plate; 508, support rod; 509, groove; 510, first spring; 511, clamping block; 512, torsion spring; 513, third chute; 514, sliding rod; 515, second spring; 516, toothed rod; 517, gear; 518, limiting plate; 6, temporary friction increasing component; 601, support block; 602, sliding cylinder; 603, pressing block; 604, clamping groove; 605, third spring; 606, ejector pin; 607, semi - circular ring; 608, inclined groove. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] Embodiment 1, please refer to Figures 1-8 , the present invention provides a laser measurement device for the bending angle of a bending part, including a detection table 1, a driving mechanism 7, a movable rod 8, a receiver 9, a laser head 10, a control panel 11, and a bent pipe 15. A first chute 2 runs through the top of the detection table 1, and a mounting base 3 is fitted and slidably connected to the inner wall of the first chute 2.

[0034] An inner clamping and shielding component 4 is arranged inside the mounting base 3.

[0035] Further, the inner clamping and shielding component 4 includes a sleeve 401, and the outer wall of the sleeve 401 is rotatably connected to the inside of the mounting seat 3. A threaded rod 402 is threadedly connected to the inside of one end of the sleeve 401, and a rotary handle 403 is fixedly connected to the end of the threaded rod 402 away from the mounting seat 3. A shaft rod 404 is rotatably connected to the end of the threaded rod 402 away from the rotary handle 403, and an adjusting disc 405 is fixedly connected to the end of the shaft rod 404 away from the threaded rod 402. The outer wall of the adjusting disc 405 is in sliding fit with the inner wall of the sleeve 401. A spiral groove 406 is formed in the inner wall of the sleeve 401, and a fixing bead 407 is fixedly connected to the outer wall of the adjusting disc 405 corresponding to the spiral groove 406, and the outer wall of the fixing bead 407 is in sliding fit with the inner wall of the spiral groove 406.

[0036] More specifically, in the embodiment, when the device is in use and when measuring the fixed bent pipe 15, first, the two movable rods 8 are supported and restricted by the limit grooves 12, so that when the two driving mechanisms 7 operate, the two movable rods 8 can be synchronously driven to move from one end of the bent pipe 15 to the other end. At this time, the receiver 9 and the laser head 10 are started by the control panel 10. When the beam irradiated by the laser head 10 contacts one of the bent surfaces of the bent pipe 15, the data of the contact point between the beam irradiated by the laser head 10 and the bent surface of the bent pipe 15 is transmitted to the display screen of the control panel 10 for display. As the movement of the laser head 10 and the receiver 9 is completed, all the contact points of the bent surface of the bent pipe 15 are measured and displayed at the terminal to complete the measurement of the bending angle of the pipe.

[0037] Then, when installing the bent pipe 15, first, the bent pipe 15 is sleeved outside the sleeve 401. Then, since the threaded rod 402 is threadedly connected to the inside of one end of the sleeve 401, and the rotary handle 403 is fixedly connected to the end of the threaded rod 402 away from the mounting seat 3, and the shaft rod 404 is rotatably connected to the end of the threaded rod 402 away from the rotary handle 403, and the adjusting disc 405 is fixedly connected to the end of the shaft rod 404 away from the threaded rod 402, the threaded rod 402 can be driven to move by rotating the rotary handle 403, and then the adjusting disc 405 can be driven to move by the shaft rod 404.

[0038] Next, a spiral groove 406 is provided on the inner wall of the sleeve 401. A fixing bead 407 is fixedly connected to the outer wall of the adjusting disc 405 corresponding to the spiral groove 406, and the outer wall of the fixing bead 407 is in sliding fit with the inner wall of the spiral groove 406. Thus, through the cooperation of the spiral groove 406 and the fixing bead 407, the adjusting disc 405 can rotate slightly during movement. Then, equal-distance through slots 408 are provided on the inner wall of the end of the sleeve 401 far from the threaded rod 402, and a fixing strip 409 is in sliding fit with the inner wall of the through slot 408. One ends of the four fixing strips 409 facing the mounting base 3 are all fixedly connected with connecting rods 410. Diffusion slots 411 are provided in the adjusting disc 405 corresponding to the connecting rods 410 at equal distances, and the outer wall of the connecting rod 410 is in sliding fit with the inner wall of the diffusion slot 411. Thus, when the adjusting disc 405 rotates slightly, due to the restriction of the fixing strip 409 by the through slot 408, under the cooperation of the connecting rod 410 and the diffusion slot 411, the four fixing strips 409 can continuously extend outwards from the through slot 408 to achieve stable fixation from the inside of the bent pipe 15, ensuring that the laser can scan the outer surface of the pipe bending area without interference, ensuring complete acquisition required for angle calculation, realizing continuous detection of laser measurement, and being beneficial to ensuring the accuracy of laser measurement.

[0039] Embodiment 2: On the basis of the above embodiment, a flipping synchronization component 5 is provided on the outer walls on both sides of the mounting base 3.

[0040] Furthermore, the flipping synchronization component 5 includes a first shaft column 501. One ends of the two first shaft columns 501 close to each other are fixedly connected to the outer walls on both sides of the mounting base 3. One ends of the two first shaft columns 501 far from each other are rotatably connected with a mounting frame 502. An inner slot 503 is provided at the top of the mounting frame 502. A telescopic rod 504 is slidably connected to the inner wall of the inner slot 503. One end of the telescopic rod 504 facing the first shaft column 501 is fixedly connected with an anti-detachment block 505. The outer wall of the anti-detachment block 505 is in sliding fit with the inner wall of the inner slot 503. One end of the telescopic rod 504 far from the first shaft column 501 is fixedly connected with a second shaft column 506. A driving slot 13 is provided on the outer wall of the movable rod 8 corresponding to the second shaft column 506, and the outer wall of the movable rod 8 is in sliding fit with the inner wall of the driving slot 13.

[0041] More specifically, in the embodiment, to achieve rapid and convenient double-sided laser measurement of the bent pipe 15, during the initial measurement of one side of the bent pipe 15, at the far ends of two first shafts 501, there is a rotatable connection with a mounting frame 502. An inner groove 503 is provided at the top of the mounting frame 502. A telescopic rod 504 is slidably connected to the inner wall of the inner groove 503. One end of the telescopic rod 504 facing the first shaft 501 is fixedly connected with an anti-detachment block 505. The outer wall of the anti-detachment block 505 is in sliding fit with the inner wall of the inner groove 503. The outer wall of the end of the telescopic rod 504 away from the first shaft 501 is fixedly connected with a second shaft 506. A driving groove 13 is provided on the outer wall of the movable rod 8 corresponding to the second shaft 506. The outer wall of the movable rod 8 is in sliding fit with the inner wall of the driving groove 13. Thus, during the initial measurement, when the two movable rods 8 move, through the engagement of the driving groove 13 and the second shaft 506, the mounting frame 502 can rotate around the first shaft 501 and pull out the telescopic rod 504 from the mounting frame 502.

[0042] When the measurement is completed, at this time, the two movable rods 8 will continue to move a certain distance. At this time, a fixed plate 507 is fixedly connected to the bottom of the detection table 1. A support rod 508 is fixedly connected to the inside of the fixed plate 507 corresponding to the telescopic rod 504. A groove 509 is provided on the outer wall of the telescopic rod 504. A first spring 510 is fixedly connected to the inner wall of the groove 509. The other end of the first spring 510 is fixedly connected with a clamping block 511. The outer wall of the clamping block 511 is in sliding fit with the inner wall of the groove 509. One side wall of the clamping block 511 is inclined with respect to the support rod 508. Thus, when the measurement is completed, at this time, the outer wall of the telescopic rod 504 will contact the support rod 508. At the same time, due to the setting of the anti-detachment block 505, the pulling-out distance of the telescopic rod 504 also reaches the maximum at this time. During the distance of movement after the measurement is completed, the telescopic rod 504 will drive the mounting seat 3 to rise through the pressing and restriction of the support rod 508.

[0043] Then, when the measurement is completed and the remaining distance of movement is completed, through the cooperation of the clamping block 511 and the first spring 510, before the movement is completed, the clamping block 511 can be pressed into the groove 509 through the contact of the inclined surface with the support rod 508. When the movement is completed, at this time, the clamping block 511 can pop out of the groove 509 again through the first spring 510 and cooperate with the support rod 508 to limit and maintain the current height of the mounting seat 3.

[0044] Next, during the upward movement of the mounting base 3, a third chute 513 is provided on the outer wall of the mounting base 3 away from the bent pipe 15. A sliding rod 514 is fitted and slidably connected to the inner wall of the third chute 513. A second spring 515 is fixedly connected to the bottom of the sliding rod 514, and the bottom of the second spring 515 is fixedly connected to the inner wall of the third chute 513. A rack 516 is fixedly connected to one end of the sliding rod 514 away from the bent pipe 15. A gear 517 is fixedly connected to the outer wall of the sleeve 401 corresponding to the rack 516, and one side of the gear 517 is meshed and matched with one side wall of the rack 516. A second chute 14 is penetratingly provided at the top of the inspection table 1, and the outer wall of the rack 516 is in close contact and sliding connection with the inner wall of the second chute 14. A limiting plate 518 is fixedly connected to the bottom of the rack 516. Thus, during the upward movement, the rack 516 can be synchronously driven to rise. When it rises to a certain height, that is, when the top of the limiting plate 518 is blocked by the bottom of the inspection table 1, at this time, the rack 516 cannot continue to rise. Thus, through the cooperation of the gear 517 and the rack 516, the sleeve 401 can be rotated by a fixed angle, that is, rotated 180 degrees.

[0045] So as to drive the bent pipe 15 to be lifted and rotated 180 degrees after lifting a certain height, realizing the turnover and surface conversion operation, avoiding the situation of jamming caused by premature flipping, so as to conveniently perform laser measurement operation on the other side of the bent pipe 15 when the subsequent movable rod 8 returns to its original position. The double-sided data acquisition can be completed with a single clamping, avoiding the time loss of repeated positioning. The double-sided data can be directly compared and verified to identify the possible local differences in the single-sided detection. Thus, it is beneficial to improve the laser measurement efficiency and data reliability.

[0046] Next, when the bent pipe 15 is just installed, the rotation of the rack 516 and the gear 517 is restricted by the elastic force of the second spring 515 and the sliding rod 514, thus avoiding the free rotation of the sleeve 401 when the rotating handle 403 is rotated and unable to achieve the fixing operation.

[0047] Next, after the two movable rods 8 are reset, at this time, first remove the measured bent pipe 15, and then manually press the two clamping blocks 511 back into the grooves 509. At this time, under the action of gravity, the mounting base 3 descends. At the same time, a torsion spring 512 is provided in close contact with the outer wall of the first shaft column 501. One end of the two torsion springs 512 close to each other is fixedly connected to the outer walls on both sides of the mounting base 3, and one end of the two torsion springs 512 away from each other is fixedly connected to the outer walls on one side of the two mounting frames 502 close to each other. Thus, the two mounting frames 502 can be driven to return to the vertical state again by the elastic force of the torsion spring 512, so that the two telescopic rods 504 slide back into the inner groove 503 again, and under the restriction of the elastic force of the torsion spring 512, it is ensured that the second shaft column 506 can be flush with the driving groove 13.

[0048] Embodiment 3. On the basis of the above embodiment, a temporary friction increasing component 6 is arranged on the outer wall of the mounting seat 3 facing the bent pipe 15.

[0049] Furthermore, the temporary friction increasing component 6 includes a support block 601. The close ends of two support blocks 601 are symmetrically and fixedly connected to the outer wall of the sleeve 401. A sliding cylinder 602 is slidably connected inside the support block 601. And a pressing block 603 is fixedly connected to one end of the sliding cylinder 602 facing the bent pipe 15. The outer wall of the pressing block 603 away from the sliding cylinder 602 is bevel-shaped. The close sides of the two pressing blocks 603 are in sliding fit with the outer wall of the sleeve 401. Card slots 604 are formed at one ends of the two sliding cylinders 602 away from the pressing block 603. And a third spring 605 is fixedly connected to the inner wall of the card slot 604. The other end of the third spring 605 is fixedly connected to a ejector pin 606. And the outer wall of the ejector pin 606 is in sliding fit with the inner wall of the card slot 604.

[0050] More specifically, in the embodiment, when initially installing the bent pipe 15, that is, when the bent pipe 15 is sleeved outside the sleeve 401, the end of the bent pipe 15 should be in contact with the bevel of the pressing block 603, and the end of the ejector pin 606 should be normally in contact with the surface of the mounting seat 3.

[0051] Then, during the subsequent rotation, due to the close ends of two support blocks 601 being symmetrically and fixedly connected to the outer wall of the sleeve 401, card slots 604 being formed at one ends of the two sliding cylinders 602 away from the pressing block 603, a third spring 605 being fixedly connected to the inner wall of the card slot 604, the other end of the third spring 605 being fixedly connected to a ejector pin 606, semi-circular rings 607 are symmetrically and fixedly connected to the outer wall of the mounting seat 3 facing the bent pipe 15 corresponding to the ejector pins 606. And inclined slots 608 are formed in the upper and lower end faces of the semi-circular rings 607 corresponding to the ejector pins 606.

[0052] Thus, when the sleeve 401 drives the bent pipe 15 to rotate, in order to avoid relative displacement between the pipe and the fixing strip 409 caused by the inertial force during the rotation, resulting in the inability to accurately rotate 180 degrees and causing errors in the comparison data, the two ejector pins 606 will be driven to rotate in a circle by the support block 601. Thus, through the setting of the inclined slots 608, during the entire rotation process, the third spring 605 can be compressed, so that the two pressing blocks 603 can be driven by the sliding cylinders 602 to press and fit the inner wall of the bent pipe 15, temporarily increasing the connection strength between the bent pipe 15 and the sleeve 401, ensuring the accuracy of the 180-degree flip, and further ensuring the accuracy of the bilateral symmetry feature detection of the bent pipe 15. In addition, during the non-rotation stage, the additional clamping pressure is released, and only the basic fixing force of the internal clamping is retained to prevent the bent pipe 15 from undergoing plastic deformation due to excessive clamping.

[0053] Working principle: First, the bent pipe 15 is sleeved outside the sleeve 401, and the end of the bent pipe 15 should be in contact with the inclined surface of the pressing block 603, and the end of the ejector pin 606 is normally attached to the surface of the mounting seat 3. Then, by rotating the rotating handle 403, the threaded rod 402 is driven to move, and further, the adjusting disc 405 can be driven to move through the shaft rod 404. At this time, through the cooperation of the spiral groove 406 and the fixing bead 407, the adjusting disc 405 rotates slightly during the movement. At this time, through the restriction of the fixing strip 409 by the telescopic groove 408, under the cooperation of the connecting rod 410 and the diffusion groove 411, the four fixing strips 409 can continuously expand and extend out of the telescopic groove 408 to achieve stable fixation from the inside of the bent pipe 15;

[0054] Then, during the initial measurement process, when the two movable rods 8 move, through the engagement of the driving groove 13 and the second shaft post 506, the mounting frame 502 can be rotated around the first shaft post 501 and the telescopic rod 504 can be pulled out of the mounting frame 502. When the measurement is completed, at this time, the two movable rods 8 will continue to move a certain distance. Since the outer wall of the telescopic rod 504 will contact the support rod 508 at this time, and at the same time, through the setting of the anti-detachment block 505, the pulling distance of the telescopic rod 504 also reaches the maximum at this time. So, during the distance of movement after the measurement is completed, the telescopic rod 504 will drive the mounting seat 3 to rise through the pressing restriction of the support rod 508;

[0055] When the measurement is completed and the remaining distance of movement is completed, before the movement is completed, the block 511 can be pressed into the groove 509 through the contact of the inclined surface with the support rod 508. When the movement is completed, at this time, the block 511 can pop out of the groove 509 again through the first spring 510 and cooperate with the support rod 508 to limit and maintain the current height of the mounting seat 3. Then, during the rising process of the mounting seat 3, the toothed rod 516 can be driven to rise synchronously. When it rises to a certain height, that is, when the top of the limit plate 518 is stuck by the bottom of the detection table 1, at this time, the toothed rod 516 cannot continue to rise. Thus, through the cooperation of the gear 517 and the toothed rod 516, the sleeve 401 can be rotated by a fixed angle, that is, rotated 180 degrees;

[0056] Subsequently, during the subsequent rotation process, when the sleeve 401 drives the bent pipe 15 to rotate, in order to prevent relative displacement between the pipe and the fixed strip 409 caused by inertial force during the rotation process, which may lead to inaccurate 180-degree rotation and errors in the comparison data, the support block 601 will drive the two ejector pins 606 to rotate in a circle. Thus, through the setting of the inclined groove 608, during the entire rotation process, the spring three 605 can be squeezed, so that the sliding cylinder 602 can drive the two pressing blocks 603 to press and fit against the inner wall of the bent pipe 15, temporarily increasing the connection strength between the bent pipe 15 and the sleeve 401, ensuring the accuracy of the 180-degree flip, and further ensuring the accuracy of the bilateral symmetry feature detection of the bent pipe 15. In addition, during the non-rotation stage, the additional clamping pressure is released, and only the basic fixing force of the internal clamping is retained to prevent plastic deformation of the bent pipe 15 due to excessive clamping.

[0057] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser measurement device for the bending angle of a bent part, comprising a detection table (1), a driving mechanism (7), a movable rod (8), a receiver (9), a laser head (10), a control panel (11), and a bent pipe (15), characterized in that: A chute one (2) is penetrated and opened at the top of the detection table (1), and a mounting seat (3) is fitted and slidably connected to the inner wall of the chute one (2); An inner clamping and anti-shielding component (4) is arranged inside the mounting seat (3) to achieve fixation from the inside of the bent pipe (15) during laser measurement, ensuring that the laser scans the outer surface of the pipe bending area without interference; Flip synchronization components (5) are arranged on the outer walls on both sides of the mounting seat (3) to automatically perform the operation of changing the surface measurement of the bent pipe (15) and conduct double-sided data comparison and verification.

2. The laser measurement device for the bending angle of a bent part according to claim 1, characterized in that, Two of the driving mechanisms (7) are symmetrically installed on the upper surfaces on both sides of the detection table (1), two of the movable rods (8) are respectively installed inside the two driving mechanisms (7), several of the receivers (9) are installed on one side of one of the movable rods (8), several of the laser heads (10) are installed on one side of the other movable rod (8), the control panel (11) is installed on the outer wall on one side of one of the movable rods (8), and limiting grooves (12) are symmetrically opened at the top of the detection table (1) corresponding to the movable rods (8).

3. A laser measuring device for the bending angle of a bent part according to claim 1 or 2, characterized in that, The inner clamping and anti-shielding component (4) includes a sleeve (401), and the outer wall of the sleeve (401) is rotatably connected to the inside of the mounting seat (3). One end of the sleeve (401) is internally threaded with a threaded rod (402), and the end of the threaded rod (402) away from the mounting seat (3) is fixedly connected with a rotating handle (403). The end of the threaded rod (402) away from the rotating handle (403) is rotatably connected to a shaft rod (404), and the end of the shaft rod (404) away from the threaded rod (402) is fixedly connected with an adjusting disc (405). The outer wall of the adjusting disc (405) is fitted and slid with the inner wall of the sleeve (401). A spiral groove (406) is opened on the inner wall of the sleeve (401), and fixing beads (407) are fixedly connected to the outer wall of the adjusting disc (405) corresponding to the spiral groove (406), and the outer wall of the fixing beads (407) is fitted and slid with the inner wall of the spiral groove (406).

4. The laser measuring device for the bending angle of a bent part according to claim 3, characterized in that, Equal-distance through slots (408) are opened at the inner wall of one end of the sleeve (401) away from the threaded rod (402), and fixing strips (409) are fitted and slidably connected to the inner walls of the through slots (408). Connecting rods (410) are fixedly connected to the ends of the four fixing strips (409) facing the mounting seat (3). Diffusion slots (411) are opened through the adjusting disc (405) at equal distances corresponding to the connecting rods (410), and the outer walls of the connecting rods (410) are fitted and slid with the inner walls of the diffusion slots (411).

5. The laser measuring device for the bending angle of a bent part according to claim 4, characterized in that, The flipping synchronization component (5) includes a first shaft column (501). One end portions of the two first shaft columns (501) close to each other are fixedly connected to the outer walls on both sides of the mounting base (3). One end portions of the two first shaft columns (501) away from each other are rotatably connected to a mounting frame (502). An inner groove (503) is formed at the top of the mounting frame (502). A telescopic rod (504) is slidably connected to the inner wall of the inner groove (503). One end portion of the telescopic rod (504) facing the first shaft column (501) is fixedly connected to an anti - detachment block (505). The outer wall of the anti - detachment block (505) is in sliding fit with the inner wall of the inner groove (503). One end portion of the telescopic rod (504) away from the first shaft column (501) is fixedly connected to a second shaft column (506) on its outer wall. A driving groove (13) is formed on the outer wall of the movable rod (8) corresponding to the second shaft column (506). The outer wall of the movable rod (8) is in sliding fit with the inner wall of the driving groove (13).

6. The laser measuring device for the bending angle of a bent part according to claim 5, characterized in that, A fixing plate (507) is fixedly connected to the bottom of the detection table (1). A support rod (508) is fixedly connected to the inside of the fixing plate (507) corresponding to the telescopic rod (504). A groove (509) is formed on the outer wall of one side of the telescopic rod (504). A first spring (510) is fixedly connected to the inner wall of the groove (509). The other end portion of the first spring (510) is fixedly connected to a clamping block (511). The outer wall of the clamping block (511) is in sliding fit with the inner wall of the groove (509). One side wall of the clamping block (511) is bevel - shaped corresponding to the support rod (508). A torsion spring (512) is disposed in a fitting manner on the outer wall of the first shaft column (501). One end portions of the two torsion springs (512) close to each other are fixedly connected to the outer walls on both sides of the mounting base (3). One end portions of the two torsion springs (512) away from each other are fixedly connected to the outer walls on one side of the two mounting frames (502) close to each other.

7. A laser measuring device for the bending angle of a bent part according to claim 6, characterized in that, A third chute (513) is formed on the outer wall of the mounting base (3) away from the bent pipe (15). A sliding rod (514) is in sliding fit with the inner wall of the third chute (513). A second spring (515) is fixedly connected to the bottom of the sliding rod (514). The bottom of the second spring (515) is fixedly connected to the inner wall of the third chute (513). One end portion of the sliding rod (514) away from the bent pipe (15) is fixedly connected to a toothed rod (516). A gear (517) is fixedly connected to the outer wall of the sleeve (401) corresponding to the toothed rod (516). One side of the gear (517) is in meshing match with one side wall of the toothed rod (516). A second chute (14) is formed through the top of the detection table (1). The outer wall of the toothed rod (516) is in sliding fit with the inner wall of the second chute (14). A limiting plate (518) is fixedly connected to the bottom of the toothed rod (516).

8. A laser measuring device for the bending angle of a bent part according to claim 7, characterized in that, A temporary friction - increasing component (6) is disposed on the outer wall of the mounting base (3) facing the bent pipe (15); The temporary friction increasing component (6) includes a support block (601). One end portions of the two support blocks (601) close to each other are symmetrically and fixedly connected to the outer wall of the sleeve (401). A sliding cylinder (602) is slidably connected inside the support block (601). One end portion of the sliding cylinder (602) facing the bent pipe (15) is fixedly connected with a pressing block (603). The outer wall of one side of the pressing block (603) away from the sliding cylinder (602) is bevel-shaped. One side walls of the two pressing blocks (603) close to each other are in sliding fit with the outer wall of the sleeve (401). One end portions of the two sliding cylinders (602) away from the pressing block (603) are provided with clamping grooves (604). A third spring (605) is fixedly connected to the inner wall of the clamping groove (604). The other end portion of the third spring (605) is fixedly connected with a ejector pin (606). The outer wall of the ejector pin (606) is in sliding fit with the inner wall of the clamping groove (604).

9. The laser measuring device for the bending angle of a bent part according to claim 8, characterized in that, On the outer wall of one side of the mounting seat (3) facing the bent pipe (15), semi-circular rings (607) are symmetrically and fixedly connected corresponding to the ejector pins (606). Oblique grooves (608) are formed in the upper and lower end faces of the semi-circular rings (607) corresponding to the ejector pins (606).

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