An automatic flaw detection device for ring forgings

Abstract

This invention discloses an automatic flaw detection device for ring forgings, belonging to the field of detection technology. The device includes a base, a pre-processing mechanism, a support base, a marking mechanism, a positioning mechanism, a flaw detection mechanism, and a support column. The positioning mechanism is located at the upper center of the base. Compared to current flaw detection devices, this invention includes both a positioning mechanism and a marking mechanism. The positioning mechanism can clamp and fix forgings of different materials and sizes. Furthermore, in case of a flaw detection device malfunction, the positioning mechanism can automatically release the forging. When a defect is detected in the forging during flaw detection, a rotary motor rotates by a corresponding angle until the damaged area of ​​the forging moves below the marking mechanism. The marking mechanism marks the damaged area of ​​the forging, facilitating subsequent targeted processing by personnel.

Description

Technical Field

[0001] The invention relates to the technical field of detection, in particular to an automatic flaw detection device for annular forgings. Background Art

[0002] The automatic flaw detection device for ring forgings is a device used for non-destructive testing of ring forgings, aiming to ensure the quality and safety of forgings. Currently, ultrasonic flaw detection, X-ray detection or magnetic particle detection are usually used to detect the quality of ring forgings. Compared with traditional manual detection, the automatic flaw detection device can significantly reduce human errors, improve the reliability of detection results, and also improve the work efficiency of the production line.

[0003] However, the existing automatic flaw detection devices for ring forgings, especially those using ultrasonic waves to detect flaws in forgings, usually do not take into account that after the ultrasonic probe is used for a long time, a large amount of ultrasonic coupling agent will accumulate near the ultrasonic probe. For example, in the patents "Publication No. CN117630180A A Ring Forging Ultrasonic Detection Workstation" and "Publication No. CN111796024A A High-precision Automatic Flaw Detection Equipment for Ring Forgings", the staff currently cleans the ultrasonic probe by wiping it manually or using cylinders, scrapers and other components to clean the ultrasonic probe. However, the above cleaning methods will either affect the work efficiency or cause the ultrasonic coupling agent to remain on the cleaning components, so that the cleaning components will not be effective the next time they are used. Finally, in order to ensure the detection accuracy, the existing automatic flaw detection devices for ring forgings usually have rollers, grinding wheels and other components to remove impurities on the surface of the ring forgings. However, the current method of removing impurities on the surface of the ring forgings basically requires stopping the machine every once in a while to replace or clean the rollers and grinding wheels, thereby affecting the work efficiency. Summary of the invention

[0004] The object of the present invention is to provide an automatic flaw detection device for annular forgings to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic flaw detection device for annular forgings, the flaw detection device comprises a machine base, a pretreatment mechanism, a support base, a marking mechanism, a positioning mechanism, a flaw detection mechanism and a pillar, the positioning mechanism is arranged at the middle position above the machine base, the forging is fixed by the positioning mechanism, a rotating motor is arranged inside the machine base, the working end of the rotating motor is connected to the positioning mechanism, the support base is provided with a plurality of groups, and the plurality of groups of support bases are arranged in a ring shape above the machine base, and the purpose of supporting the forgings is achieved through the plurality of groups of support bases, a group of grooves are arranged at both left and right ends of the machine base, and a group of first linear motors are arranged in each group of the grooves, the pretreatment mechanism and the marking mechanism are relatively arranged in the two groups of grooves, the pillar is arranged on the outside of the machine base, the flaw detection mechanism is arranged at one end of the machine base close to the pillar, the flaw detection mechanism and the pillar are connected by a fifth linear motor, and the present invention drives the positioning mechanism and the forgings through the rotating motor The rotary motor rotates above the machine base so that each area of ​​the forging passes through the pretreatment mechanism, the flaw detection mechanism and the marking mechanism in sequence. The upper and lower surfaces of the forging are cleaned by the pretreatment mechanism to avoid the presence of impurities such as oxide scale on the forging, which may affect the subsequent flaw detection. The flaw detection mechanism is used to detect whether there are damages and defects inside each area of ​​the forging. The rotary motor has an angle detection mechanism inside. When damage is detected in a certain area of ​​the forging, the rotary motor will rotate a corresponding angle until the damaged area of ​​the forging moves below the marking mechanism (the functions realized by the rotary motor and the angle detection mechanism belong to conventional technical means in this field, and the specific structure is not described). The damaged area of ​​the forging is marked by the marking mechanism to facilitate the staff to perform fixed-point processing on the forging later. The pretreatment mechanism and the marking mechanism are both moved horizontally in the groove by a group of first linear motors, so as to facilitate the staff to perform flaw detection on forgings of different sizes, thereby improving the use occasions of the present invention.

[0006] Furthermore, the flaw detection mechanism includes a flaw detection seat and a workbench, the flaw detection seat is arranged above the forging, the flaw detection seat is connected to the pillar through a fifth linear motor, the workbench is arranged below the forging, the workbench is fixedly mounted on the machine base and is flush with the support base, the height of the flaw detection seat can be controlled by the fifth linear motor, so as to facilitate the staff to perform flaw detection on forgings of different thicknesses, an ultrasonic probe, a second cleaning roller and a discharge pipe are arranged inside the flaw detection seat, the ultrasonic probe is movably installed at the middle position inside the flaw detection seat through a fourth linear motor, the second cleaning roller is arranged at one end of the flaw detection seat close to the marking mechanism, the discharge pipe is arranged at one end of the flaw detection seat close to the pretreatment mechanism, and a scraper is also arranged at one end of the discharge pipe close to the ultrasonic probe. The discharge pipe is connected to an external ultrasonic coupling agent feeding system. When the present invention is working, the forging will pass under the discharge pipe, the ultrasonic probe and the second cleaning roller in sequence. When the forging passes under the discharge pipe, the external ultrasonic coupling agent feeding system sprays the ultrasonic coupling agent onto the forging through the discharge pipe. When the forging moves from under the discharge pipe to under the ultrasonic probe, the ultrasonic coupling agent on the forging is scraped off by a scraper. When the forging moves to under the ultrasonic probe, the ultrasonic probe is driven by the fourth linear motor to move along the diameter direction of the forging to facilitate the ultrasonic probe to perform flaw detection on different areas of the forging. When the forging moves to under the second cleaning roller, the forging is cleaned by the second cleaning roller to prevent the ultrasonic coupling agent on the forging from affecting the operation of the marking mechanism.

[0007] Furthermore, a cavity is provided inside the flaw detection seat, the ultrasonic probe is arranged in the cavity, a fixing plate is provided below the cavity, two groups of fixing plates are provided, one group of fixing plates is located inside the forging, and the other group of fixing plates is located outside the forging, each group of fixing plates is provided with a group of collecting plates, and each group of collecting plates is connected to the fixing plates through a first compression spring.

[0008] Furthermore, a fixed sleeve is provided on the outside of the ultrasonic probe, and two groups of liquid storage tanks are relatively provided at the upper end of the interior of the fixed sleeve, and a group of movable plates and hydraulic fluid are provided in each group of the liquid storage tanks, and a movable groove is provided at the lower end of the interior of the fixed sleeve, and the movable groove is an annular structure, and a telescopic frame is provided in the movable groove, and the telescopic frame is connected to the movable groove through a second compression spring, and the lower end of the telescopic frame extends out of the movable groove, and a scraper ring is provided at the lower end of the telescopic frame, and the two groups of liquid storage tanks are connected to the movable groove through an arc channel, and push rods are provided at both ends of the interior of the cavity, and the push rods are flush with the movable plate. When the present invention is working, the two groups of collecting plates always fit the inner and outer wall surfaces of the forging. Under normal circumstances, when the fourth linear motor drives the ultrasonic probe to move along the diameter direction of the forging, the ultrasonic probe does not separate from the upper surface of the forging. When too much ultrasonic coupling agent is gathered near the ultrasonic probe When the movable plate is in contact with the push rod, if the ultrasonic probe continues to move, the push rod will exert a set of forces on the movable plate, thereby causing the hydraulic fluid in the reservoir to enter the movable groove. Under the action of the hydraulic pressure, the telescopic frame drives the scraper ring to move downward. During the downward movement of the scraper ring, the ultrasonic coupling agent outside the ultrasonic probe can be pushed onto the aggregate plate, thereby preventing the coupling agent from accumulating too much near the ultrasonic probe and affecting the detection accuracy and image quality. Finally, the telescopic frame and scraper ring in the present invention are made of copper. When the fourth linear motor drives the ultrasonic probe away from the push rod, under the action of the second compression spring, the telescopic frame and the scraper ring will reset and hit the upper inner wall of the movable groove. At this time, the telescopic frame and the scraper ring will vibrate, and the ultrasonic coupling agent attached to the scraper ring when cleaning the ultrasonic probe will be removed through the vibration of the telescopic frame and the scraper ring themselves.

[0009] Furthermore, the positioning mechanism includes a first positioning rod, a second positioning rod, a fixed column and a turntable, the turntable is arranged in the machine base and connected to the working end of the rotating motor, the fixed column is arranged on the turntable and extends out of the machine base, the first positioning rod is provided with a plurality of groups, the plurality of groups of the first positioning rods are fixed at equal angles on the outside of the fixed column, each group of the first positioning rods is provided with a group of second positioning rods, an end of the second positioning rod located in the first positioning rod is wound with an adjusting spring, an end of the second positioning rod extending out of the first positioning rod is provided with a pad, an adjusting groove is provided in the turntable, an electromagnet is provided at the lower end of the adjusting groove, a pressure plate and hydraulic oil are provided at the upper end of the adjusting groove, a magnetic block is inlaid on the end of the pressure plate close to the electromagnet, and the adjusting groove is connected with a plurality of groups through a shunt channel. The first positioning rods are connected. When the staff places the forging on the support seat, the staff can turn on the electromagnet and drive the pressure plate to move up through the electromagnet, so that the hydraulic oil in the adjustment groove enters into the several groups of first positioning rods. Under the action of the hydraulic pressure, the several groups of second positioning rods will extend from the several groups of first positioning rods, and support the inside of the forging through the several groups of pads, so as to facilitate the subsequent rotation of the motor to drive the positioning mechanism and the forging to rotate. Compared with the current clamping mechanism used in the flaw detection device, the present invention can clamp and fix forgings of different materials and different specifications and sizes. On the other hand, when the flaw detection device fails, the positioning mechanism provided in the present invention has an automatic resetting function, so that the staff can remove the forging from the flaw detection device in time to avoid affecting the subsequent maintenance of the device.

[0010] Furthermore, the pretreatment mechanism includes a first mounting frame and a pretreatment seat, and the pretreatment seat is provided with two groups. The two groups of pretreatment seats are relatively arranged on the upper and lower sides of the forging, and a group of pretreatment seats located above the forging is connected to the first mounting frame through a second linear motor. Each group of pretreatment seats is provided with a group of cleaning components, and the cleaning components include a cleaning groove, a first cleaning roller, a gear assembly and a reversing motor. The first cleaning roller is arranged in the cleaning groove, and the reversing motor is connected to the first cleaning roller through the gear assembly. The upper and lower surfaces of the forging are cleaned through the two groups of cleaning components.

[0011] Furthermore, each group of the pretreatment seats is provided with a group of air suction channels, each group of the air suction channels is connected to a group of cleaning grooves, the two groups of the air suction channels are connected through a bellows, a suction fan, a filter cartridge and an air outlet groove are provided in the first mounting frame, the filter cartridge is arranged in the air outlet groove, the filter cartridge is connected to the air outlet end of the suction fan, and a group of air suction channels located below the forging is connected to the air inlet end of the suction fan. When the forgings in the present invention pass through the pretreatment mechanism, the reversing motors in the two groups of the cleaning components will drive the two groups of first cleaning rollers to rotate through the gear assembly, and the upper and lower surfaces of the forgings are cleaned by the two groups of first cleaning rollers. The invention also provides a cleaning mechanism for cleaning the forgings, thereby preventing the presence of impurities such as oxide scale on the upper and lower surfaces of the forgings, so as to affect the accuracy of subsequent flaw detection. Finally, when the two groups of first cleaning rollers in the invention are working, the suction fan will work synchronously to suck away the impurities attached to the two groups of first cleaning rollers and discharge them into the filter cartridge, and the impurities are trapped by the filter cartridge. Compared with the cleaning mechanism used in the current flaw detection device, the invention has the function of automatic cleaning on the one hand, avoiding the need to replace or clean the first cleaning rollers at regular intervals, thereby improving work efficiency. On the other hand, the cleaning mechanism in the invention can be suitable for forgings of different sizes, thereby improving the usage scenarios.

[0012] Furthermore, the marking mechanism includes a second mounting frame, a marking seat, a material storage barrel and a marking tube. The marking seat is movably mounted on the second mounting frame by a third linear motor. The present invention controls the height of the marking seat by a third linear motor to facilitate the marking mechanism to be applicable to forgings of different sizes. The material storage barrel is arranged on the marking seat, and the marking tube is arranged at one end of the material storage barrel close to the forging. A valve is arranged on the marking tube. Through the above technical solution, when a defective part in the forging moves to the bottom of the marking tube, the valve will open. At this time, the coating in the material storage barrel will flow to the defective part of the forging, thereby facilitating the staff to perform subsequent fixed-point processing of the forging.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Compared with the existing flaw detection device, the present invention is provided with a positioning mechanism and a marking mechanism. The positioning mechanism can clamp and fix forgings of different materials and different specifications and sizes. On the other hand, when the flaw detection device fails, the positioning mechanism can automatically release the forging, so that the staff can remove the forging from the flaw detection device in time to avoid affecting the subsequent maintenance of the device. When the forging has defects during the flaw detection, the rotating motor will rotate the corresponding angle until the damaged area of ​​the forging moves to the bottom of the marking mechanism. The damaged area of ​​the forging is marked by the marking mechanism to facilitate the staff to perform the subsequent fixed-point processing of the forging;

[0015] 2. The present invention is also provided with a collecting plate and a fixed sleeve. There are two groups of collecting plates. The two groups of collecting plates always fit the inner wall and outer wall of the forging. When too much ultrasonic coupling agent gathers near the ultrasonic probe, the ultrasonic probe is driven to move to the top of the collecting plate by the fourth linear motor. The push rod can make the telescopic frame in the fixed sleeve drive the scraper ring to move downward. During the downward movement of the scraper ring, the ultrasonic coupling agent outside the ultrasonic probe can be pushed onto the collecting plate, thereby preventing the coupling agent from gathering too much near the ultrasonic probe and affecting the detection accuracy and image quality. In addition, the telescopic frame and the scraper ring in the present invention are made of copper. When the fourth linear motor drives the ultrasonic probe away from the push rod, under the action of the second compression spring, the telescopic frame and the scraper ring will reset and hit the upper inner wall of the movable groove. At this time, the telescopic frame and the scraper ring will vibrate, and the ultrasonic coupling agent attached to the scraper ring when cleaning the ultrasonic probe will be removed by the vibration of the telescopic frame and the scraper ring themselves.

[0016] 3. The present invention is also provided with a pretreatment mechanism. Compared with the cleaning mechanism used in the current flaw detection device, the pretreatment mechanism in the present invention has the function of automatic cleaning on the one hand, thereby avoiding the need to replace or clean the first cleaning roller every once in a while, thereby improving work efficiency. On the other hand, the cleaning mechanism in the present invention can be suitable for forgings of different sizes, thereby improving the use scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the flaw detection mechanism of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the flaw detection seat of the present invention;

[0020] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the middle AA section;

[0021] Figure 5 It is a schematic diagram of the structure of the fixing sleeve of the present invention;

[0022] Figure 6 For the present invention Figure 5 Schematic diagram of the structure of the middle BB part;

[0023] Figure 7 It is a schematic diagram of the positioning mechanism structure of the present invention;

[0024] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the middle D part;

[0025] Fig. 9 For the present invention Figure 7 Schematic diagram of the CC structure;

[0026] Fig.10 It is a schematic diagram of the structure of the pretreatment mechanism of the present invention;

[0027] Fig.11 For the present invention Fig.10 Schematic diagram of the EE structure;

[0028] Fig.12 For the present invention Fig.10 Schematic diagram of the structure of the middle FF part;

[0029] Fig.13 It is a schematic diagram of the marking mechanism structure of the present invention.

[0030] In the figure: 1, machine base; 11, first linear motor; 12, rotary motor; 2, pretreatment mechanism; 21, first mounting frame; 211, suction fan; 212, filter cartridge; 213, air outlet slot; 22, second linear motor; 23, pretreatment seat; 231, first cleaning roller; 232, suction channel; 233, gear assembly; 3, forging; 4, support seat; 5, marking mechanism; 51, second mounting frame; 52, marking seat; 53, storage barrel; 54, marking tube; 55, third linear motor; 6, positioning mechanism; 61, first positioning rod; 62, the first The second positioning rod; 63, the fixed column; 631, the diversion channel; 64, the turntable; 641, the electromagnet; 642, the pressure plate; 65, the cushion block; 7, the flaw detection mechanism; 71, the flaw detection seat; 72, the fourth linear motor; 73, the workbench; 74, the ultrasonic probe; 741, the fixed sleeve; 7411, the movable plate; 7412, the liquid storage tank; 7413, the movable tank; 7414, the scraper ring; 7415, the telescopic frame; 75, the ejector rod; 76, the fixed plate; 77, the collecting plate; 78, the second cleaning roller; 79, the discharge pipe; 8, the support; 81, the fifth linear motor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example: Figure 1-Figure 7As shown, the present invention provides a technical solution, an automatic flaw detection device for annular forgings, the flaw detection device includes a machine base 1, a pretreatment mechanism 2, a support seat 4, a marking mechanism 5, a positioning mechanism 6, a flaw detection mechanism 7 and a pillar 8, the positioning mechanism 6 is arranged at the upper middle position of the machine base 1, the forging 3 is fixed by the positioning mechanism 6, a rotating motor 12 is arranged inside the machine base 1, the working end of the rotating motor 12 is connected to the positioning mechanism 6, the support seat 4 is provided with a plurality of groups, the plurality of groups of support seats 4 are arranged in a ring shape above the machine base 1, and the purpose of supporting the forging 3 is achieved by the plurality of groups of support seats 4, a group of grooves are arranged at both left and right ends of the machine base 1, a group of first linear motors 11 are arranged in each group of grooves, the pretreatment mechanism 2 and the marking mechanism 5 are relatively arranged in the two groups of grooves, the pillar 8 is arranged on the outside of the machine base 1, the flaw detection mechanism 7 is arranged at one end of the machine base 1 close to the pillar 8, the flaw detection mechanism 7 and the pillar 8 are connected by a fifth linear motor 81, the present invention drives the positioning mechanism 6 and the forging 3 on the machine base 1 by the rotating motor 12 The rotary motor 12 is provided with an angle detection mechanism inside. When a certain area of ​​the forging 3 is detected to be damaged, the rotary motor 12 will rotate a corresponding angle until the damaged area of ​​the forging 3 moves to the bottom of the marking mechanism 5 (the functions realized by the rotary motor 12 and the angle detection mechanism belong to conventional technical means in this field, and the specific structure is not described). The damaged area of ​​the forging 3 is marked by the marking mechanism 5 to facilitate the staff to perform fixed-point processing on the forging 3 in the future. The pretreatment mechanism 2 and the marking mechanism 5 are both moved horizontally in the groove by a group of first linear motors 11, so as to facilitate the staff to perform flaw detection on forgings 3 of different sizes, thereby improving the use occasions of the present invention.

[0033] like Figure 2-Figure 4As shown, the flaw detection mechanism 7 includes a flaw detection seat 71 and a workbench 73. The flaw detection seat 71 is arranged above the forging 3. The flaw detection seat 71 is connected to the support 8 through the fifth linear motor 81. The workbench 73 is arranged below the forging 3. The workbench 73 is fixedly mounted on the machine base 1 and is flush with the support base 4. The height of the flaw detection seat 71 can be controlled by the fifth linear motor 81 to facilitate the staff to perform flaw detection on forgings 3 of different thicknesses. An ultrasonic probe 74, a second cleaning roller 78 and a discharge pipe 79 are arranged inside the flaw detection seat 71. The ultrasonic probe 74 is movably mounted at the middle position inside the flaw detection seat 71 through the fourth linear motor 72. The second cleaning roller 78 is arranged at one end of the flaw detection seat 71 close to the marking mechanism 5. The discharge pipe 79 is arranged at one end of the flaw detection seat 71 close to the pretreatment mechanism 2. A scraper is also arranged at one end of the discharge pipe 79 close to the ultrasonic probe 74. 79 is connected to the external ultrasonic coupling agent feeding system. When the present invention is working, the forging 3 will pass under the discharge pipe 79, the ultrasonic probe 74 and the second cleaning roller 78 in sequence. When the forging 3 passes under the discharge pipe 79, the external ultrasonic coupling agent feeding system sprays the ultrasonic coupling agent onto the forging 3 through the discharge pipe 79. When the forging 3 moves from under the discharge pipe 79 to under the ultrasonic probe 74, the ultrasonic coupling agent on the forging 3 is scraped flat by a scraper. When the forging 3 moves to under the ultrasonic probe 74, the ultrasonic probe 74 is driven by the fourth linear motor 72 to move along the diameter direction of the forging 3 to facilitate the ultrasonic probe 74 to perform flaw detection on different areas of the forging 3. When the forging 3 moves to under the second cleaning roller 78, the forging 3 is cleaned by the second cleaning roller 78 to prevent the ultrasonic coupling agent on the forging 3 from affecting the operation of the marking mechanism 5.

[0034] like Figure 2 As shown, a cavity is also provided inside the flaw detection seat 71, and an ultrasonic probe 74 is arranged in the cavity. A fixing plate 76 is arranged below the cavity. Two groups of fixing plates 76 are provided, one group of fixing plates 76 is located inside the forging 3, and the other group of fixing plates 76 is located outside the forging 3. A group of collecting plates 77 is provided on each group of fixing plates 76, and each group of collecting plates 77 is connected to the fixing plates 76 through a first compression spring.

[0035] like Figure 2 , Figure 5-Figure 6As shown, a fixed sleeve 741 is provided on the outside of the ultrasonic probe 74, and two groups of liquid storage tanks 7412 are relatively provided at the upper end of the interior of the fixed sleeve 741, and a group of movable plates 7411 and hydraulic fluid are provided in each group of liquid storage tanks 7412. A movable groove 7413 is provided at the lower end of the interior of the fixed sleeve 741. The movable groove 7413 is an annular structure, and a telescopic frame 7415 is provided in the movable groove 7413. The telescopic frame 7415 is connected to the movable groove 7413 through a second compression spring, and the lower end of the telescopic frame 7415 extends out of the movable groove 7413. A scraper ring 7414 is provided at the lower end of the telescopic frame 7415. The two groups of liquid storage tanks 7412 are connected to the movable groove 7413 through an arc channel, and push rods 75 are provided at both ends of the cavity, and the push rods 75 are flush with the movable plate 7411.

[0036] When the present invention is working, the two sets of collecting plates 77 always fit the inner wall surface and the outer wall surface of the forging 3. Under normal circumstances, when the fourth linear motor 72 drives the ultrasonic probe 74 to move along the diameter direction of the forging 3, the ultrasonic probe 74 does not separate from the upper surface of the forging 3. When too much ultrasonic coupling agent gathers near the ultrasonic probe 74, the staff can drive the ultrasonic probe 74 to move above the collecting plate 77 through the fourth linear motor 72. When the movable plate 7411 contacts the push rod 75, if the ultrasonic probe 74 continues to move, the push rod 75 will apply a set of force to the movable plate 7411, thereby causing the hydraulic fluid in the liquid storage tank 7412 to enter the movable tank 7413. Under the action of the hydraulic pressure, the telescopic frame 7415 drives the scraper ring 7414 When the ultrasonic probe 74 is moved downward, the scraper ring 7414 can push the ultrasonic coupling agent on the outside of the ultrasonic probe 74 onto the collecting plate 77 during the downward movement, thereby preventing the coupling agent from accumulating too much near the ultrasonic probe 74 and affecting the detection accuracy and image quality. Finally, the telescopic frame 7415 and the scraper ring 7414 in the present invention are made of copper. When the fourth linear motor 72 drives the ultrasonic probe 74 away from the top rod 75, under the action of the second compression spring, the telescopic frame 7415 and the scraper ring 7414 will reset and hit the upper inner wall of the movable groove 7413. At this time, the telescopic frame 7415 and the scraper ring 7414 will vibrate, and the ultrasonic coupling agent attached to the scraper ring 7414 when cleaning the ultrasonic probe 74 will be removed through the vibration of the telescopic frame 7415 and the scraper ring 7414 themselves.

[0037] like Figure 7-Figure 9As shown, the positioning mechanism 6 includes a first positioning rod 61, a second positioning rod 62, a fixed column 63 and a turntable 64. The turntable 64 is arranged in the base 1 and connected to the working end of the rotating motor 12. The fixed column 63 is arranged on the turntable 64 and extends out of the base 1. The first positioning rod 61 is provided with a plurality of groups. The plurality of groups of first positioning rods 61 are fixed at equal angles on the outside of the fixed column 63. Each group of first positioning rods 61 is provided with a group of second positioning rods 62. An end of the second positioning rod 62 located in the first positioning rod 61 is wound with an adjusting spring. An end of the second positioning rod 62 extending out of the first positioning rod 61 is provided with a cushion block 65. An adjusting groove is provided in the turntable 64. An electromagnet 641 is provided at the lower end of the adjusting groove. A pressure plate 642 and hydraulic oil are provided at the upper end of the adjusting groove. A magnetic block is inlaid on the end of the pressure plate 642 close to the electromagnet 641. The adjusting groove is connected with the plurality of groups through a shunt channel 631. The first positioning rods 61 are connected. When the staff places the forging on the support seat 4, the staff can turn on the electromagnet 641 and drive the pressure plate 642 to move upward through the electromagnet 641, so that the hydraulic oil in the adjustment groove enters into the several groups of first positioning rods 61. Under the action of the hydraulic pressure, the several groups of second positioning rods 62 will extend from the several groups of first positioning rods 61, and support the inside of the forging 3 through the several groups of pads 65, so as to facilitate the subsequent rotation of the motor 12 to drive the positioning mechanism 6 and the forging 3 to rotate. Compared with the current clamping mechanism used in the flaw detection device, the present invention can clamp and fix the forgings 3 of different materials and different specifications and sizes. On the other hand, when the flaw detection device fails, the positioning mechanism 6 provided in the present invention has an automatic reset function, so that the staff can remove the forging 3 from the flaw detection device in time to avoid affecting the subsequent maintenance of the device.

[0038] like Figure 10-12 As shown, the pretreatment mechanism 2 includes a first mounting frame 21 and a pretreatment seat 23. The pretreatment seat 23 is provided with two groups. The two groups of pretreatment seats 23 are relatively arranged on the upper and lower sides of the forging 3. The group of pretreatment seats 23 located above the forging 3 is connected to the first mounting frame 21 through the second linear motor 22. A group of cleaning components is arranged in each group of pretreatment seats 23. The cleaning components include a cleaning groove, a first cleaning roller 231, a gear assembly 233 and a reversing motor (not shown in the figure). The first cleaning roller 231 is arranged in the cleaning groove. The reversing motor is connected to the first cleaning roller 231 through the gear assembly 233. The upper and lower surfaces of the forging 3 are cleaned through the two groups of cleaning components.

[0039] like Figure 10-12As shown, each group of pretreatment seats 23 is provided with a group of suction channels 232, each group of suction channels 232 is connected to a group of cleaning grooves, and the two groups of suction channels 232 are connected through bellows. A suction fan 211, a filter cartridge 212 and an air outlet groove 213 are provided in the first mounting frame 21. The filter cartridge 212 is arranged in the air outlet groove 213, and the filter cartridge 212 is connected to the air outlet end of the suction fan 211. A group of suction channels 232 located below the forging 3 is connected to the air inlet end of the suction fan 211.

[0040] When the forging 3 in the present invention passes through the pretreatment mechanism 2, the reversing motors in the two groups of the cleaning components will drive the two groups of first cleaning rollers 231 to rotate through the gear assembly 233, and the upper and lower surfaces of the forging 3 are cleaned by the two groups of first cleaning rollers 231 to avoid the presence of impurities such as oxide scale on the upper and lower surfaces of the forging 3, so as to affect the subsequent flaw detection accuracy. Finally, when the two groups of first cleaning rollers 231 in the present invention are working, the suction fan 211 will work synchronously, and the impurities attached to the two groups of first cleaning rollers 231 will be sucked away by the suction fan 211 and discharged to the filter cartridge 212, and the impurities will be trapped by the filter cartridge 212. Compared with the cleaning mechanism used in the current flaw detection device, the present invention has the function of automatic cleaning on the one hand, avoiding the need to replace or clean the first cleaning rollers 231 every other period of time, thereby improving the work efficiency. On the other hand, the cleaning mechanism in the present invention can be suitable for forgings 3 of different sizes, thereby improving the usage scenarios.

[0041] like Fig.13 As shown, the marking mechanism 5 includes a second mounting frame 51, a marking seat 52, a storage barrel 53 and a marking tube 54. The marking seat 52 is movably mounted on the second mounting frame 51 by a third linear motor 55. The present invention controls the height of the marking seat 52 by the third linear motor 55 to facilitate the marking mechanism 5 to be suitable for forgings 3 of different sizes. The storage barrel 53 is arranged on the marking seat 52, and the marking tube 54 is arranged at one end of the storage barrel 53 close to the forging 3. A valve is arranged on the marking tube 54. Through the above technical solution, when a defective part in the forging 3 moves to the bottom of the marking tube 54, the valve will open. At this time, the paint in the storage barrel 53 will flow to the defective part of the forging 3, so as to facilitate the staff to perform fixed-point processing on the forging 3 later.

[0042] The working principle of the present invention is as follows: before work, when the forging is placed on the support seat 4, the pressure plate 642 is driven upward by the electromagnet 641 to allow the hydraulic oil in the adjustment groove to enter the plurality of first positioning rods 61. Under the action of the hydraulic pressure, the plurality of second positioning rods 62 will extend from the plurality of first positioning rods 61, and support the interior of the forging 3 through the plurality of pads 65. Then, the rotating motor 12 is turned on, and the positioning mechanism 6 and the forging 3 are driven to rotate by the rotating motor 12, so that each area of ​​the forging 3 passes through the pretreatment mechanism 2, the flaw detection mechanism 7 and the marking mechanism 5 in turn. The upper and lower surfaces of the forging 3 are cleaned by the pretreatment mechanism 2 to avoid the presence of impurities such as oxide scale on the forging 3. The flaw detection mechanism 7 is used to detect whether there are damages and defects inside each area of ​​the forging 3. When it is detected that a certain area of ​​the forging 3 is damaged, the rotating motor 12 will rotate the corresponding angle until the damaged area of ​​the forging 3 moves to the bottom of the marking mechanism 5. The damaged area of ​​the forging 3 is marked by the marking mechanism 5 to facilitate the staff to perform subsequent fixed-point processing on the forging 3.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. The embodiments should therefore be considered exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An automatic flaw detection device for ring forgings, characterized in that: The flaw detection device comprises a machine base (1), a pretreatment mechanism (2), a support base (4), a marking mechanism (5), a positioning mechanism (6), a flaw detection mechanism (7) and a support (8), wherein the positioning mechanism (6) is arranged at a middle position above the machine base (1), and the forging (3) is fixed by the positioning mechanism (6), a rotating motor (12) is arranged inside the machine base (1), and a working end of the rotating motor (12) is connected to the positioning mechanism (6), the support base (4) is provided with a plurality of groups, and the plurality of groups of support bases (4) are arranged in a ring shape above the machine base (1), and the plurality of groups of support bases (4) are arranged in a ring shape above the machine base (1). A group of grooves are provided at both left and right ends of the machine base (1), and a group of first linear motors (11) are provided in each group of the grooves. The pretreatment mechanism (2) and the marking mechanism (5) are arranged in the two groups of grooves relative to each other, and the pretreatment mechanism (2) and the marking mechanism (5) are both moved horizontally in the grooves by a group of first linear motors (11). The support (8) is arranged on the outside of the machine base (1), and the flaw detection mechanism (7) is arranged at one end of the machine base (1) close to the support (8). The flaw detection mechanism (7) and the support (8) are connected by a fifth linear motor (81). The flaw detection mechanism (7) comprises a flaw detection seat (71) and a workbench (73), wherein the flaw detection seat (71) is arranged above the forging (3), the flaw detection seat (71) is connected to the support (8) via a fifth linear motor (81), the workbench (73) is arranged below the forging (3), the workbench (73) is fixedly mounted on the machine base (1) and is flush with the support base (4), an ultrasonic probe (74), a second cleaning roller (78) and a discharge pipe (79) are arranged inside the flaw detection seat (71), the ultrasonic probe (74) is movably mounted at a middle position inside the flaw detection seat (71) via a fourth linear motor (72), the second cleaning roller (78) is arranged at one end of the flaw detection seat (71) close to the marking mechanism (5), the discharge pipe (79) is arranged at one end of the flaw detection seat (71) close to the pretreatment mechanism (2), and a scraper is also arranged at one end of the discharge pipe (79) close to the ultrasonic probe (74); A cavity is also provided inside the flaw detection seat (71), the ultrasonic probe (74) is arranged in the cavity, a fixing plate (76) is provided below the cavity, two groups of the fixing plates (76) are provided, one group of the fixing plates (76) is located inside the forging (3), and the other group of the fixing plates (76) is located outside the forging (3), each group of the fixing plates (76) is provided with a group of collecting plates (77), and each group of the collecting plates (77) is connected to the fixing plates (76) via a first compression spring; The ultrasonic probe (74) is provided with a fixed sleeve (741) on the outside, two groups of liquid storage tanks (7412) are arranged opposite to each other at the upper end of the interior of the fixed sleeve (741), each group of liquid storage tanks (7412) is provided with a group of movable plates (7411), and a movable groove (7413) is provided at the lower end of the interior of the fixed sleeve (741), the movable groove (7413) is an annular structure, and a telescopic frame (7415) is provided in the movable groove (7413). The telescopic frame (7415) is connected to the movable groove (7413) via a second compression spring; the lower end of the telescopic frame (7415) extends out of the movable groove (7413); a scraper ring (7414) is provided at the lower end of the telescopic frame (7415); the two groups of liquid storage tanks (7412) are connected to the movable groove (7413) via an arc-shaped channel; and push rods (75) are provided at both ends of the cavity; the push rods (75) are flush with the movable plate (7411).

2. The automatic flaw detection device for ring forgings according to claim 1 is characterized in that: The positioning mechanism (6) comprises a first positioning rod (61), a second positioning rod (62), a fixing column (63) and a rotating disk (64); the rotating disk (64) is arranged in the machine base (1) and connected to the working end of the rotating motor (12); the fixing column (63) is arranged on the rotating disk (64) and extends out of the machine base (1); the first positioning rods (61) are provided in a plurality of groups; the plurality of groups of the first positioning rods (61) are fixed at equal angles to the outside of the fixing column (63); each group of the first positioning rods (61) has a A group of second positioning rods (62) is provided, one end of the second positioning rod (62) located inside the first positioning rod (61) is wound with an adjustment spring, one end of the second positioning rod (62) extending from the first positioning rod (61) is provided with a cushion block (65), an adjustment slot is provided inside the rotating disk (64), an electromagnet (641) is provided at the lower end of the adjustment slot, a pressure plate (642) is provided at the upper end of the adjustment slot, and the adjustment slot is connected to the plurality of groups of first positioning rods (61) via a diversion channel (631).

3. The automatic flaw detection device for annular forgings according to claim 1 is characterized in that: The pretreatment mechanism (2) comprises a first mounting frame (21) and a pretreatment seat (23). The pretreatment seat (23) is provided in two groups. The two groups of pretreatment seats (23) are arranged on the upper and lower sides of the forging (3) in a relative manner. The group of pretreatment seats (23) located above the forging (3) is connected to the first mounting frame (21) via a second linear motor (22). A group of cleaning components is arranged in each group of pretreatment seats (23). The cleaning components comprise a cleaning groove, a first cleaning roller (231), a gear assembly (233) and a reversing motor. The first cleaning roller (231) is arranged in the cleaning groove. The reversing motor is connected to the first cleaning roller (231) via the gear assembly (233). The upper and lower surfaces of the forging (3) are cleaned by the two groups of cleaning components.

4. The automatic flaw detection device for ring forgings according to claim 3 is characterized in that: A group of air suction channels (232) is provided in each group of the pretreatment seats (23), each group of the air suction channels (232) is connected to a group of cleaning slots, and the two groups of the air suction channels (232) are connected via a bellows. A suction fan (211), a filter cartridge (212) and an air outlet slot (213) are provided in the first mounting frame (21), the filter cartridge (212) is provided in the air outlet slot (213), the filter cartridge (212) is connected to the air outlet end of the suction fan (211), and a group of air suction channels (232) located below the forging (3) is connected to the air inlet end of the suction fan (211).

5. The automatic flaw detection device for ring forgings according to claim 1 is characterized in that: The marking mechanism (5) comprises a second mounting frame (51), a marking seat (52), a material storage barrel (53) and a marking tube (54); the marking seat (52) is movably mounted on the second mounting frame (51) via a third linear motor (55); the material storage barrel (53) is arranged on the marking seat (52); the marking tube (54) is arranged at one end of the material storage barrel (53) close to the forging (3); a valve is arranged on the marking tube (54); and an angle detection mechanism is arranged inside the rotating motor (12).

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