A small-diameter wire / rod / tube ultrasonic testing system without end blind areas

Abstract

The object of the present invention is to provide a small-diameter wire / rod / tube ultrasonic detection system without end blind zones, which includes an automatic clamping input mechanism, an operation control platform, an ultrasonic detector, an ultrasonic signal processing unit, and a traction output sorting mechanism; wherein, the operation control platform bears the ultrasonic detector and the ultrasonic signal processing unit, and is connected to the automatic clamping input mechanism and the traction output sorting mechanism on the left and right sides; the ultrasonic detector and the ultrasonic signal processing unit are used for the transmission and reception of ultrasonic waves and the processing and display of defect information; the automatic clamping input mechanism and the traction output sorting mechanism are used for the real-time detection and automatic sorting of the whole inspection material; the ultrasonic detector has a unique "acoustic eye" structural feature, which changes the way ultrasonic waves enter the inspection material and can effectively eliminate the end detection blind zones of the wire / rod / tube. The system adopts the method of straight-line transmission of the inspection material, and can realize the direct-entry fast non-blind-zone ultrasonic non-destructive detection of small-diameter wires / rods / tubes.

Description

Technical Field

[0001] The present invention relates to non-destructive testing technology for wires, rods and tubes, and provides an automated ultrasonic non-destructive testing system for small-diameter wires, rods and tubes without end blind zones. Background Art

[0002] In fields such as aviation, aerospace, nuclear industry, special equipment and medical treatment, wires, rods and tubes are widely used as basic raw material forms. If there are defects such as cracks and inclusions in wires, rods and tubes, it will seriously affect the use safety of products and cause serious consequences. Ultrasonic testing methods are generally one of the methods that must be adopted in product quality testing methods, and most of the testing of a large number of test materials uses automatic testing methods.

[0003] Currently, all wire / rod / tube detection systems have a common problem, that is, the end blind zone problem. The equipment manufacturing standard YB4082 stipulates that: "The non-detectable area at the tube end (end blind zone) shall not be greater than 200 mm". The testing method standard GB5777 stipulates that: "When automatically testing, the two ends of the steel pipe cannot be effectively inspected, and this area is regarded as the blind zone of automatic testing. The manufacturer can adopt effective methods to ensure the quality of this area". For the end detection blind zone, one method adopted by the research and production units of wires, rods and tubes is to cut off the ends, which causes huge waste of raw materials; another method is to rely on manufacturing processes to ensure, which will inevitably leave potential safety hazards.

[0004] The ultrasonic detectors used for system integration can be divided into forms such as the mechanical rotation of ultrasonic probes, the electronic rotation of ultrasonic phased arrays, and multi-channel detection units (ZL 2010 1 0146128.0), etc. The above ultrasonic detectors all include a water coupling cavity and coupling sleeves on both sides of the water coupling cavity. The water cavity is used to form a coupling medium for ultrasonic waves, and the coupling sleeves on both sides are used for the positioning of the test material. In actual testing, it can be considered that when the test material is located between the two coupling sleeves, the relative position between the test material and the probe is stable, and reliable ultrasonic signals can be obtained. When the tail of the test material leaves the coupling sleeve at the tail, the relative position between the detector and the probe cannot be guaranteed, and reliable and stable ultrasonic signals cannot be obtained, forming an end detection blind zone. That is to say, half of the distance between the two coupling sleeves is the end detection blind zone. The two forms of ultrasonic detectors, namely the mechanical rotation of ultrasonic probes and the electronic rotation of ultrasonic phased arrays, generally have larger sizes and larger end blind zones. The bar detection system of the BIS system of OLYMPUS Corporation has been optimized for end testing, and a very short non-detectable length at the end can still be obtained, which is 20 mm. The multi-channel detection unit in ZL 2010 1 0146128.0 has a smaller size and can greatly reduce the detection blind zones at both ends of the test material. In terms of its principle, it cannot fundamentally eliminate the detection blind zone.

[0005] In terms of the movement of the test specimen, the test specimen mostly enters and exits by means of roller friction drive. This friction drive method is prone to problems such as lost rotation or slipping, and the speed control is not precise enough; for test specimens with different diameters, the heights of multiple drive wheels need to be adjusted to ensure concentricity, and the operation process is cumbersome and the efficiency is low. For test specimens with a non-circular cross-sectional shape, such as square bars and hexagonal bars, corresponding rollers need to be designed and manufactured according to specifications, and the versatility is poor.

[0006] The present invention provides a small-diameter wire / bar / tube automated ultrasonic non-destructive testing system without end blind spots. The test specimen accurately enters the ultrasonic detector in a clamping and conveying manner, passes through the ultrasonic detector at a high speed in a high-speed clamping and traction manner, and the lifting sorting mechanism completes automatic sorting, which can effectively eliminate the detection blind spots at the beginning and end of the test specimen and achieve high-speed automated detection. Summary of the Invention

[0007] The object of the present invention is to provide a small-diameter wire / bar / tube ultrasonic testing system without end blind spots. Among them, the ultrasonic detector has the structural feature of "acoustic eye". Compared with the existing ultrasonic detectors, the way of ultrasonic wave entering the test specimen is changed, which can effectively eliminate the end detection blind spots of the wire / bar / tube. The ultrasonic testing system integrated with the electromechanical system adopts the straight-line conveying method of the test specimen, and can realize the direct-entry and fast non-blind-spot ultrasonic non-destructive testing of small-diameter wire / bar / tube.

[0008] The technical solution of the present invention is as follows:

[0009] A small-diameter wire / bar / tube ultrasonic testing system without end blind spots, characterized in that: the ultrasonic testing system includes an automatic clamping input mechanism 1, an operation control platform 2, an ultrasonic detector 3, an ultrasonic signal processing unit 4, and a traction output sorting mechanism 5;

[0010] Among them, the operation control platform 2 bears the ultrasonic detector 3 and the ultrasonic signal processing unit 4, and its left and right sides are connected to the automatic clamping input mechanism 1 and the traction output sorting mechanism 5; the ultrasonic detector 3 and the ultrasonic signal processing unit 4 are respectively used for the emission and reception of ultrasonic waves and the processing and display of defect information; the automatic clamping input mechanism 1 is used to send the test specimen into the ultrasonic detector 3 and the real-time detection of the end area of the test specimen, and the traction output sorting mechanism 5 is used to drive the test specimen to pass through and out of the ultrasonic detector 3, realize the real-time detection of the main body area and the tail area of the test specimen, and automatically sort according to the defect situation;

[0011] The automatic clamping input mechanism 1 includes a loading shelf frame 11 and an automatic loading mechanism frame 14. The loading shelf 12 is arranged above the loading shelf frame 11 through a height adjusting mechanism 13. The loading shelf 12 is provided with one or more supporting parts for supporting the test sample. The height adjusting mechanism 13 can adjust the height of the loading shelf 12 for the placement and centering adjustment of the test sample. The automatic loading mechanism frame 14 is located on the left side of the loading shelf frame 11, and is provided with a loading moving unit 15 and a loading centering device 17. The loading clamping mechanism 16 is arranged on the loading moving unit 15 for clamping the test sample. The loading moving unit 15 can drive the loading clamping mechanism 16 to move horizontally for automatic clamping and loading during the detection process.

[0012] The traction output sorting mechanism 5 includes a discharge mechanism frame 51 and a support sorting mechanism 56. The discharge mechanism frame 51 is provided with a discharge traction mechanism and a discharge clamping mechanism 55. The discharge traction mechanism is arranged on the discharge mechanism frame 51 for driving the discharge clamping mechanism 55 to move horizontally. A plurality of support sorting mechanisms 56 are arranged on the discharge mechanism frame 51 for supporting and automatically sorting the test sample during the detection process. The discharge unqualified area shelf 57 and the discharge qualified area shelf 58 are respectively arranged on both sides of the discharge mechanism frame 51 for placing the qualified and unqualified test samples after sorting.

[0013] As a preferred technical solution:

[0014] The ultrasonic detector 3 includes a water storage tank 31, a cover 32, an annular array unit mounting frame 33, an annular array detection unit 34, a water pump 35, a water circulation input / output 36, and a sensor 37. Among them, the cover 32 is located above the water storage tank 31. The annular array unit mounting frame 33 and the water pump 35 are fixed inside the water storage tank 31, and the annular array detection unit 34 is connected to the annular array unit mounting frame 33. The water pump 35 is connected to the input end of the water circulation input / output 36. The sensor 37 is installed on the side where the test sample enters outside the cover 32 for positioning the head and tail of the test sample.

[0015] The annular array detection unit 34 includes an outer ring part and an inner ring part. The outer ring part and the inner ring part are connected as a whole through a wire inlet side end cover 345 and a wire outlet side end cover 346. The outer ring part is composed of an outer ring matrix 341 and an outer ring array probe 342, and the inner ring part is composed of an inner ring core 343 and an inner ring core locking ring 344. The cover 32 is provided with an opening for leading out the connection ports of the outer ring array probe 342 and the water pump 35.

[0016] The outer ring matrix 341 is a toroid. The outer cylindrical surface of the toroid is distributed with probe mounting holes in a multi-column annular array structure. The inner hole of the toroid cooperates with the wire inlet side end cover 345 and the wire outlet side end cover 346 to form a coupling water chamber. The outer ring array probes 342 are sequentially placed in the probe mounting holes. The inner ring core 343 is placed in the core part of the coupling water chamber. The inner ring core 343 is a cylindrical member, and holes or strip-shaped "acoustic eyes" are distributed on the outer cylindrical surface in a multi-column annular array structure. The "acoustic eyes" correspond to the hole axes of the probe mounting holes. The inner hole of the cylinder of the inner ring core 343 is the inspection material walking channel. The inner ring core 343 passes through the wire inlet side end cover 345 and the wire outlet side end cover 346 in sequence, and is fixed by the inner ring core locking ring 344 at the wire inlet side end cover 345 or the wire outlet side end cover 346.

[0017] The outer ring array probes 342 are fixed in the probe mounting holes by outer ring probe adjustment locking screws.

[0018] The outer ring matrix 341 is a toroid made of high-density organic glass material, and the inner ring core 343 is made of copper, aluminum, stainless steel, cemented carbide or polytetrafluoroethylene.

[0019] The support and sorting mechanism 56 includes a support and sorting mechanism frame 561, a support and sorting mechanism control box 562, a lifting mechanism cylinder 563, a lifting bracket 564, a clamping cylinder 565, a clamping mechanism 566, a qualified sorting cylinder 567, a unqualified sorting cylinder 568 and a sorting pallet 569;

[0020] Among them, the support and sorting mechanism frame 561 is connected to the discharge mechanism frame 51. One side of the support and sorting mechanism frame 561 is provided with a support and sorting mechanism control box 562 for the electrical control of the support and sorting mechanism 56, and the other side is provided with a lifting mechanism cylinder 563;

[0021] A U-shaped lifting bracket 564 is connected in the telescopic direction of the lifting mechanism cylinder 563. Above the lifting bracket 564, a clamping cylinder 565 and a clamping mechanism 566 are connected. The clamping mechanism 566 is composed of a bracket and three rollers, which play a role in supporting and centering the test material during the detection process. On both sides of the lifting bracket 564, a qualified sorting cylinder 567 and an unqualified sorting cylinder 568 are respectively provided. A "L-shaped" sorting support plate 569 is respectively connected to the qualified sorting cylinder 567 and the unqualified sorting cylinder 568 for sorting qualified and unqualified test materials. The installation directions of the two sorting support plates 569 are mirror images of each other. When they rise simultaneously, they can support and fix the test material, and the long side of the sorting support plate 569 forms a certain angle (such as 10° - 30°) with the horizontal direction, so that when it is in the raised state on a single side, the test material can naturally slide onto the corresponding shelf. During the movement of the test material, the lifting brackets 564 of each support sorting mechanism 56 rise in sequence, so that the corresponding clamping mechanisms 566 are in the clamping state, playing a role in supporting and limiting the test material. After the test material stops moving, it enters the sorting stage. First, the clamping mechanism 566 opens, and then the qualified sorting cylinder 567 and the unqualified sorting cylinder 568 rise simultaneously, so that the test material is supported and fixed by the sorting support plate 569. At this time, according to the defect situation, if the test material is qualified, the unqualified sorting cylinder 568 drops, and the test material naturally slides onto the shelf 57 in the qualified discharge area through the sorting support plate 569 on the qualified sorting cylinder 567. Finally, after the sorting is completed, the lifting mechanism cylinder 563 and the qualified sorting cylinder 567 drop simultaneously, and vice versa.

[0022] The discharge traction mechanism is composed of a discharge mechanism guide rail 52, a discharge mechanism rack 53, and a discharge moving unit 54. The discharge mechanism guide rail 52 is laid on the discharge mechanism frame 51. The discharge moving unit 54 is located on the discharge mechanism guide rail 52 and is driven by the discharge mechanism rack 53 to move. The discharge clamping mechanism 55 is arranged on the discharge moving unit 54.

[0023] The upper material shelf frame 11, the automatic loading mechanism frame 14, the ultrasonic detector 3, and the discharge mechanism frame 51 are connected and fixed through connecting plates and fastening screws. The ultrasonic detector 3 can be integrated with other automation systems, and the automatic clamping input mechanism 1 and the traction output sorting mechanism 5 can also be integrated with other detectors.

[0024] The upper material centering device 17 is composed of a bracket with adjustable height and support rollers.

[0025] The diameter of the object to be detected is 4 mm - 28 mm, and the end face is a round wire, rod, or pipe with a regular geometric shape.

[0026] The ultrasonic detection system for small-diameter wire / rod / tube without end blind zones of the present invention can achieve automatic detection and automatic sorting without end blind zones.

[0027] The advantages of the present invention are as follows:

[0028] (1) The ultrasonic detection system of the present invention effectively eliminates the end detection blind area of wires / rods / tubes, ensures the test quality of the entire test material, solves the problem that the end of the test material cannot be effectively detected and needs to be cut off, avoids the loss of manpower and material resources caused by cutting off the end of the test material, and greatly reduces the production cost.

[0029] (2) The ultrasonic detection system of the present invention provides a good solution for the high-speed automatic ultrasonic detection of small-diameter wires / rods / tubes. Compared with the spiral detection method, the direct-entry detection method of the present invention greatly improves the detection speed; the full-process automation design of automatic feeding, automatic discharging and automatic sorting simplifies the detection process and ensures the realization of fast and highly reliable detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Overall structure diagram of the equipment.

[0031] Figure 2 Structure diagram of the automatic clamping input mechanism.

[0032] Figure 3 Structure diagram of the traction output sorting mechanism.

[0033] Figure 4 Structure diagram of the support sorting mechanism.

[0034] Figure 5 Basic schematic diagram of the existing ultrasonic detector.

[0035] Figure 6 Basic schematic diagram of the ultrasonic detector without end blind area.

[0036] Figure 7 Side view of the overall structure of the ultrasonic detector.

[0037] Figure 8 Top view of the overall structure of the ultrasonic detector.

[0038] Figure 9 Structure diagram of the annular array detection unit.

[0039] Figure 10 Arrangement diagram of the annular array probes. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] Embodiment 1

[0041] As Figure 1 shown, an ultrasonic detection system for small-diameter wires / rods / tubes without end blind area includes an automatic clamping input mechanism 1, an operation control platform 2, an ultrasonic detector 3, an ultrasonic signal processing unit 4, and a traction output sorting mechanism 5;

[0042] Among them, the operation control platform 2 bears the ultrasonic detector 3 and the ultrasonic signal processing unit 4, and its left and right sides are connected to the automatic clamping input mechanism 1 and the traction output sorting mechanism 5; the ultrasonic detector 3 and the ultrasonic signal processing unit 4 are used for the transmission and reception of ultrasonic waves and the processing and display of defect information; the automatic clamping input mechanism 1 is used to send the test material into the ultrasonic detector 3 and conduct real-time detection of the end area of the test material, and the traction output sorting mechanism 5 is used to pass the test material through and out of the ultrasonic detector 3, realizing real-time detection of the main body area and the tail area of the test material, and automatically sorting according to the defect situation.

[0043] The control system of the ultrasonic detection system includes an industrial control computer, a power supply and a general control unit, a motion control and drive unit, a clamping control unit, and five support sorting mechanism control units. Programmable controllers are provided in each control unit, which form a bus structure with the industrial control computer, and the detection software of the industrial control computer is used to control the entire detection process. At the start of the detection, the test material is clamped and pulled by the automatic clamping input mechanism 1 and penetrates into the ultrasonic detector 3. After the end penetrates out, the automatic clamping input mechanism 1 stops, and the test material continues to pass through the ultrasonic detector 3 under the traction of the traction output sorting mechanism 5 until the test material completely penetrates out. The traction output sorting mechanism 5 conducts qualified or unqualified sorting according to the detection results of the ultrasonic signal processing unit 4.

[0044] As Figure 2 shown, at both ends of the loading shelf frame 11 of the automatic clamping input mechanism 1, a height adjustment mechanism 13 is installed respectively. Above the height adjustment mechanism 13, there is a loading shelf 12, and centering of test materials with different diameters can be achieved through the height adjustment mechanism 13; on the loading shelf 12, there are multiple polytetrafluoroethylene V-shaped grooves (support parts) to ensure the stability of the test material during the loading process; the left side of the loading shelf frame 11 is connected to the bottom of the automatic loading mechanism frame 14 through a connecting plate and fastening screws. On the automatic loading mechanism frame 14, there is a loading moving unit 15. The loading moving unit 15 consists of a stepping motor and a toothed belt to form a linear moving unit. Anti-collision blocks are provided at both ends to ensure the safety during the moving process. A movable slider is provided above it, and a loading clamping mechanism 16 is connected to the slider; the loading clamping mechanism 16 includes a pneumatic claw and a clamping module connected to the pneumatic claw. L-shaped stoppers are connected to both ends of the clamping module, and the test material can be supported when the pneumatic claw is opened; the loading centering device 17 is located between the loading moving unit 15 and the entrance of the ultrasonic detector 3 to ensure the centering of the test material with the ultrasonic detector 3.

[0045] As Figure 5 shown, in the existing ultrasonic detector, the ultrasonic probe and the test material are coupled and propagated in an "open" water environment. When the test material reaches the unconstrained area in the water coupling cavity, the end position of the test material will inevitably have mechanical swing, and a stable ultrasonic detection signal cannot be obtained, and effective detection cannot be implemented. AsFigure 6 The following is the basic schematic diagram of the direct-entry non-blind-zone ultrasonic detector of the present invention. Through the design and use of the kernel, the ultrasonic probe and the test material are coupled and propagated in an "isolated" environment. The ultrasonic beam of the ultrasonic probe enters the test material through the "acoustic eye", and the test material travels stably under the constraint of the kernel. Even at the end position, stable transmission is obtained, and a stable ultrasonic detection signal is obtained. Therefore, the present invention realizes "non-blind-zone" detection at the end.

[0046] As Figure 7 、 8 shown in the figure, the ultrasonic detector 3 includes a water storage tank 31, a cover 32, an annular array unit mounting frame 33, an annular array detection unit 34, a water pump 35, a water circulation input / output 36, and a sensor 37; wherein, the cover 32 is located on the water storage tank 31, and a connection opening is provided on the cover 32 for leading out the connection ports of the outer ring array probe 342 and the water pump 35; the annular array unit mounting frame 33 is fixed to the bottom plate of the water storage tank 31 by welding, the water pump 35 is fixed to the bottom plate of the water storage tank 31 by threaded connection, and the annular array detection unit 34 is connected to the annular array unit mounting frame 33 by screws; the water pump 35 is connected to the input end of the water circulation input / output 36 through a water pipe, and the output end of the water circulation input / output 36 is connected to another water pipe to complete the connection of the water circulation system; the sensor 37 is installed on the side where the test material enters in the cover 32 for positioning the head and tail of the test material.

[0047] As Figure 9 shown in the figure, the annular array detection unit 34 includes an outer ring part and an inner ring part, and the outer ring part and the inner ring part are connected into one body through an incoming wire side end cover 345 and an outgoing wire side end cover 346; the outer ring part is composed of an outer ring base body 341 and regularly distributed outer ring array probes 342, and the inner ring part is composed of an inner ring kernel 343 and an inner ring kernel locking ring 344.

[0048] The outer ring base body 341 is a toroid. The outer cylindrical surface of the toroid is distributed with probe mounting holes in a multi-column annular array structure. The inner hole of the toroid cooperates with the wire feeding side end cover 345 and the wire discharging side end cover 346 to form a coupling water cavity. The outer ring array probes 342 are sequentially fixed in the probe mounting holes through the outer ring probe adjusting lock screws. The number of probes should ensure the acoustic coverage of the test material. The inner ring inner core 343 is placed in the core of the coupling water cavity. The inner ring inner core 343 is a cylindrical member. It passes through the central hole of the wire feeding side end cover 345 and then passes through the central hole of the wire discharging side end cover 346. The inner ring inner core locking ring 344 locks and fixes the inner ring inner core 343 at the wire feeding side end cover 345. The inner ring inner core 343 is distributed with hole-shaped through holes - "acoustic eyes" on the outer cylindrical surface in a multi-column annular array structure. The "acoustic eyes" correspond to the hole axes of the probe mounting holes. The inner hole of the cylinder of the inner ring inner core 343 is the walking channel for the test material. The ultrasonic beam passes through the "acoustic eyes" in the coupling water cavity to reach the surface of the test material and then propagates and tests in the test material. A series of hole-shaped or strip-shaped "air eyes" are also distributed above the inner ring inner core 343. The "air eyes" are through holes with a diameter of about 3 mm. They are located above the inner ring inner core 343 in the coupling water cavity (i.e., the "air eyes" are through holes on the cylinder wall of the inner ring inner core 343). The axial position is in the direction of the test material entry and more than 5 mm away from the first acoustic eye, and is used for discharging the gas in the walking channel of the test material.

[0049] The outer ring base body 341 is a toroid made of high-density organic glass material, and the inner ring inner core 343 is a cylindrical member made of copper.

[0050] As Figure 3 As shown, the traction output sorting mechanism 5 is provided with a discharge mechanism frame 51. The discharge mechanism frame 51 is provided with a discharge mechanism guide rail 52, and a discharge mechanism rack 53 is arranged on the outside. There are a discharge moving unit 54 and a discharge clamping mechanism 55. The discharge moving unit 54 is connected to the discharge mechanism guide rail 52 through a slider. A gear is connected to the moving motor shaft of the discharge moving unit 54. The precise displacement of the discharge moving unit 54 is realized through the meshing transmission between the gear and the rack. The discharge clamping mechanism 55 is provided with clamping claws and a clamping module connected to the claws, which is used for clamping and traction of the test material during the discharging process. A plurality of support sorting mechanisms 56 are arranged inside the discharge mechanism frame 51. During the detection process, the support sorting mechanisms 56 are sequentially lifted to play a role in fixing and supporting the test material. The number of lifted support sorting mechanisms 56 is related to the length of the test material. After the test material completely passes through the detection unit, according to the defect situation of the test material, the support sorting mechanisms 56 complete automatic sorting. A discharge unqualified area shelf 57 is connected in front of the discharge mechanism frame 51, and a discharge qualified area shelf 58 is connected behind, which are used for placing the qualified and unqualified test materials after sorting.

[0051] Embodiment 2

[0052] The difference from Example 1 is that the "acoustic eye" is a strip-shaped through-hole distributed on the outer cylindrical surface of the inner ring core 343, and other parts and the expected results are the same as those in Example 2.

[0053] Example 3

[0054] The difference from Example 1 is that the "acoustic eye" is a hole type and a strip-shaped through-hole distributed on the outer cylindrical surface of the inner ring core 343, and other parts and the expected results are the same as those in Example 2.

[0055] Example 4

[0056] The difference from Example 1 is that the inner ring core 343 is a cylindrical member made of stainless steel, and other parts and the expected results are the same as those in Example 2.

[0057] Example 5

[0058] For the detection method of linear transmission of the test sample, to ensure 100% coverage of the test sample by the sound beam, multiple probes need to be arranged in a limited space. The concept of "outer ring - multiple rings and multiple probes, inner core - multiple rings and multiple acoustic eyes" is adopted. Figure 10 The probe arrangement form of "outer ring - 4 rings and 16 probes, inner core - 4 rings and 16 acoustic eyes" is given. According to the sound beam coverage requirements, a total of 4 rings of probes are arranged in the outer ring, and 4 probes are distributed at intervals of 90° in each ring. The first ring of probes are probe 1-1, probe 1-2, probe 1-3 and probe 1-4 respectively, and the corresponding acoustic eyes 1-1-1, acoustic eye 1-2-2, acoustic eye 1-3-3 and acoustic eye 1-4-4 are distributed on the inner ring core 343. The second ring of probes are arranged at a certain interval along the axial direction of the test sample, which are probe 2-1, probe 2-2, probe 2-3 and probe 2-4 respectively, and four acoustic eyes are correspondingly distributed along the axial direction of the inner ring core 343. And so on, the third ring of probes are probe 3-1, probe 3-2, probe 3-3 and probe 3-4 respectively, and the fourth ring of probes are probe 4-1, probe 4-2, probe 4-3 and probe 4-4 respectively. In this embodiment, a total of 4 rings and 16 probes, 4 rings and 16 acoustic eyes are arranged, ensuring the sound beam coverage rate of the test sample. According to actual needs, the number of probes can be flexibly adopted in the arrangement form of "outer ring - N rings and M probes, inner core - N rings and M acoustic eyes" to achieve blind area-free detection of the direct transmission method.

[0059] Example 6

[0060] As Figure 4 shown, the traction output sorting mechanism 5 is provided with five support sorting mechanisms 56, and each support sorting mechanism 56 includes a support sorting mechanism frame 561, a support sorting mechanism control box 562, a lifting mechanism cylinder 563, a lifting bracket 564, a clamping cylinder 565, a clamping mechanism 566, a qualified sorting cylinder 567, an unqualified sorting cylinder 568, and a sorting pallet 569.

[0061] Among them, the bottom of the support and sorting mechanism frame 561 is fixed on the discharge mechanism frame 51 through fastening screws. A support and sorting mechanism control box 562 and a lifting mechanism cylinder 563 are provided on the support and sorting mechanism frame 561. A programmable controller for cylinder control, solenoid valves, pressure regulating valves, etc. are provided inside the support and sorting mechanism control box 562. A U-shaped lifting bracket 564 is connected in the telescopic direction of the lifting mechanism cylinder 563. During the process of the sample discharging, the lifting bracket 564 realizes the lifting and lowering actions under the control of the lifting mechanism cylinder 563. A clamping cylinder 565 and a clamping mechanism 566 are connected above the lifting bracket 564. The clamping mechanism 566 is composed of a bracket and three rollers arranged in parallel. It plays a role in supporting and centering the sample during the detection process; the clamping and opening actions of the clamping mechanism 566 on the sample are completed through the telescopic movement of the clamping cylinder 565, ensuring that the center of the sample is always on a straight line during the discharging process.

[0062] On both sides of the lifting bracket 564, a qualified sorting cylinder 567 and an unqualified sorting cylinder 568 are respectively provided. The lifting and sorting of the sample are completed through the telescopic actions of the qualified and unqualified cylinders. A "L-shaped" sorting support plate 569 is respectively connected to the qualified sorting cylinder 567 and the unqualified sorting cylinder 568 for sorting qualified and unqualified samples. The two sorting support plates 569 are installed in a mirror image. When they rise simultaneously, they can support and fix the sample, and the long side of the sorting support plate 569 forms a certain angle with the horizontal direction, so that when it is in the rising state on a single side, the sample can naturally slide onto the corresponding shelf.

[0063] During the movement of the sample, the lifting brackets 564 of each support and sorting mechanism 56 rise in sequence. Before the sorting starts, the clamping mechanism 566 is in the clamping state. After the sample stops moving, it enters the sorting stage. First, the clamping mechanism 566 opens. Secondly, the qualified sorting cylinder 567 and the unqualified sorting cylinder 568 rise simultaneously, and the sample is lifted to a height higher than the discharge shelf. Then, according to the qualified or unqualified situation of the sample, the qualified sorting cylinder 567 or the unqualified sorting cylinder 568 drops, and the sample automatically slides onto the corresponding shelf. After the sample completely falls onto the discharge area shelf, the lifting bracket 564 drops, and at the same time, the qualified sorting cylinder 567 or the unqualified sorting cylinder 568 in the rising state also drops, completing a sorting process.

[0064] Embodiment 7

[0065] The difference from Embodiment 6 is that: the sorting support plate 569 is composed of two or more than two sorting support plates installed in parallel. Other parts and the expected results are the same as those in Embodiment 7.

[0066] Embodiment 8

[0067] For the detection method of spiral conveyance of the test sample, compared with the linear conveyance method of the test sample, 100% coverage of the test sample by the sound beam can be achieved by relying on the rotation of the test sample. One or more outer ring probes can be flexibly arranged axially or circumferentially according to actual needs, and the inner core correspondingly distributes sound eyes axially or circumferentially to achieve blind area-free detection in the spiral conveyance method.

[0068] Example 9

[0069] For test samples with different detection methods, detectors can be flexibly selected according to needs. For example, replacing the detector with a detector equipped with an eddy current probe can achieve automatic eddy current detection of the test sample. Using an ultrasonic detector and an eddy current detector simultaneously can achieve automatic ultrasonic detection and automatic eddy current detection of the test sample in the same device.

[0070] Example 10

[0071] According to the material and length range of the test sample, the lengths of the feeding mechanism frame 14 and the discharging mechanism frame 51 can be flexibly adjusted, and the number of support and sorting mechanisms 56 can be increased or decreased, and the spacing distance of the support and sorting mechanisms 56 can be enlarged or reduced.

[0072] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and shall not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A small-diameter wire / rod / tube ultrasonic testing system without end blind areas, characterized in that: The ultrasonic detection system includes an automatic clamping input mechanism (1), an operation control platform (2), an ultrasonic detector (3), an ultrasonic signal processing unit (4), and a traction output sorting mechanism (5); Among them, the operation control platform (2) bears the ultrasonic detector (3) and the ultrasonic signal processing unit (4). The two sides of the operation control platform (2) are respectively connected to the automatic clamping input mechanism (1) and the traction output sorting mechanism (5); the ultrasonic detector (3) is used for the emission and reception of ultrasonic waves, and the ultrasonic signal processing unit (4) is used for the processing and display of defect information; The automatic clamping input mechanism (1) includes a loading shelf frame (11) and an automatic loading mechanism frame (14). Among them, the loading shelf (12) is arranged above the loading shelf frame (11) through a height adjustment mechanism (13). The loading shelf (12) is provided with one or more support parts for supporting the test material; the automatic loading mechanism frame (14) is located on the left side of the loading shelf frame (11), and is provided with a loading moving unit (15) and a loading centering device (17). The loading clamping mechanism (16) is arranged on the loading moving unit (15) for clamping the test material, and the loading moving unit (15) can drive the loading clamping mechanism (16) to move horizontally; The traction output sorting mechanism (5) includes a discharge mechanism frame (51) and a support sorting mechanism (56). The discharge mechanism frame (51) is provided with a discharge traction mechanism and a discharge clamping mechanism (55). The discharge traction mechanism is arranged on the discharge mechanism frame (51) for driving the discharge clamping mechanism (55) to move horizontally; a plurality of support sorting mechanisms (56) are arranged on the discharge mechanism frame (51) for the support and automatic sorting of the test material during the detection process; the two sides of the discharge mechanism frame (51) are respectively provided with a discharge non-conforming area shelf (57) and a discharge conforming area shelf (58); The ultrasonic detector (3) includes a water storage tank (31), a cover (32), an annular array unit mounting rack (33), an annular array detection unit (34), a water pump (35), a water circulation input / output (36), and a sensor (37); the annular array detection unit (34) includes an outer ring part and an inner ring part, and the outer ring part and the inner ring part are connected into one body through an inlet wire end cover (345) and an outlet wire end cover (346); the outer ring part is composed of an outer ring matrix (341) and an outer ring array probe (342), and the inner ring part is composed of an inner ring core (343) and an inner ring core locking ring (344); the cover (32) is provided with an opening for leading out the connection port of the outer ring array probe (342) and the water pump (35); The outer ring base body (341) is a toroid. The outer cylindrical surface of the toroid is distributed with probe mounting holes in a multi-column annular array structure. The inner hole of the toroid cooperates with the wire inlet end cover (345) and the wire outlet end cover (346) to form a coupling water chamber. The outer ring array probes (342) are sequentially placed in the probe mounting holes. The inner ring core (343) is placed in the core of the coupling water chamber. The inner ring core (343) is a cylindrical member. The outer cylindrical surface is distributed with hole-shaped or strip-shaped "acoustic eyes" in a multi-column annular array structure. The "acoustic eyes" correspond to the hole axes of the probe mounting holes. The inner hole of the cylinder of the inner ring core (343) is the walking channel for the test material. The inner ring core (343) sequentially passes through the wire inlet end cover (345) and the wire outlet end cover (346), and is fixed by the inner ring core locking ring (344) at the wire inlet end cover (345) or the wire outlet end cover (346).

2. The small-diameter wire / rod / tube ultrasonic testing system without end blind area according to claim 1, characterized in that: The cover (32) is located above the water storage tank (31). The annular array unit mounting frame (33) and the water pump (35) are fixed inside the water storage tank (31). The annular array detection unit (34) is connected to the annular array unit mounting frame (33). The water pump (35) is connected to the input end of the water circulation input and output (36). The sensor (37) is installed on the side where the test material enters outside the cover (32) for positioning the head and tail of the test material.

3. The ultrasonic testing system for small-diameter wires, rods, and tubes without end blind spots according to claim 1, wherein: The outer ring array probes (342) are fixed in the probe mounting holes by the outer ring probe adjustment locking screws.

4. The ultrasonic testing system for small-diameter wires, rods, and tubes without end blind spots according to claim 2, characterized in that: The outer ring base body (341) is a toroid made of high-density organic glass material, and the inner ring core (343) is made of copper, aluminum, stainless steel, cemented carbide or polytetrafluoroethylene.

5. The small-diameter wire / rod / tube ultrasonic testing system without end blind area according to claim 1, characterized in that: The support and sorting mechanism (56) includes a support and sorting mechanism frame (561), a support and sorting mechanism control box (562), a lifting mechanism cylinder (563), a lifting bracket (564), a clamping cylinder (565), a clamping mechanism (566), a qualified sorting cylinder (567), a unqualified sorting cylinder (568) and a sorting support plate (569). Among them, the support and sorting mechanism frame (561) is connected to the discharge mechanism frame (51). A support and sorting mechanism control box (562) is provided on one side of the support and sorting mechanism frame (561), and a lifting mechanism cylinder (563) is provided on the other side. A U-shaped lifting bracket (564) is connected in the telescopic direction of the lifting mechanism cylinder (563). A clamping cylinder (565) and a clamping mechanism (566) are connected above the lifting bracket (564). The clamping mechanism (566) is composed of a bracket and three rollers. A qualified sorting cylinder (567) and an unqualified sorting cylinder (568) are respectively provided on both sides of the lifting bracket (564). An L-shaped sorting support plate (569) is respectively connected to the qualified sorting cylinder (567) and the unqualified sorting cylinder (568). The installation directions of the two sorting support plates (569) are mirror images. The long side of the sorting support plate (569) forms a certain angle with the horizontal direction.

6. The small-diameter wire / rod / tube ultrasonic testing system without end blind areas according to claim 1, wherein: The discharging and pulling mechanism is composed of a discharging mechanism guide rail (52), a discharging mechanism rack (53) and a discharging moving unit (54). The discharging mechanism guide rail (52) is laid on the discharging mechanism frame (51). The discharging moving unit (54) is located on the discharging mechanism guide rail (52) and is driven by the discharging mechanism rack (53) to move. The discharging clamping mechanism (55) is arranged on the discharging moving unit (54).

7. The ultrasonic testing system for small-diameter wires, rods or tubes without end blind zones according to claim 1, characterized in that: The loading shelf frame (11), the automatic loading mechanism frame (14), the ultrasonic detector (3) and the discharging mechanism frame (51) are connected and fixed through connecting plates and fastening screws.

8. The small-diameter wire / rod / tube ultrasonic testing system without end blind area according to claim 1, wherein: The loading centering device (17) is composed of a bracket with adjustable height and supporting rollers.

9. The ultrasonic testing system for small-diameter wires, rods, and tubes without end blind spots according to claim 1, characterized in that: The test materials are wires, rods or tubes with a diameter of 4 mm - 28 mm and end faces with regular geometric shapes.

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