Radiographic detection marker automatic sorting device and use method thereof

Abstract

The invention discloses an automatic sorting device for radiographic inspection markers and a using method of the automatic sorting device. Partition plates are arranged between inner and outer wall plates of a recycling box, and a detachable material box is installed in a cavity formed between every two adjacent partition plates; a motor base is installed in the center of the recycling box, and a push rod support, an upper camera support and a hopper support are fixedly installed on the portion, opposite to the annular opening of the recycling box, of the outer side workbench. Guide tables are arranged on two sides of a through groove in the lower end of the buffer box; the inlet side of the through groove is opposite to the push block; the central control system obtains feature codes of the markers through the upper camera and the lower camera, the linear steering engine releases the markers borne on the transparent storage table, the markers fall into the corresponding detachable material boxes, and single-time sorting is completed. Compared with the prior art, the method has the advantages that the posture uniformity of the markers during discharging is improved, accumulation and blockage of the markers during discharging are avoided, the overall recognition efficiency and classification quality are improved, higher classification precision is achieved, good stability and adaptability are achieved, and the purposes of high precision, high efficiency, modularization and low coupling are achieved.

Description

Technical Field

[0001] The present invention relates to an intelligent classification and collection system for key markers in non-destructive testing, applicable to automatic classification equipment for complex small objects, and particularly relates to an automatic sorting device for ray detection markers and a method for using the same. Background Art

[0002] Ray detection is an important category of non-destructive testing. Based on the characteristics that the workpiece to be inspected has different absorption or scattering of rays due to differences in composition, density, thickness, etc., judgments are made on the internal quality, dimensions, and characteristics of the workpiece to be inspected. Currently, this technology is widely used in industrial fields such as aviation, aerospace, shipbuilding, ordnance, and electronics.

[0003] During the ray detection process, a cuboid marker - lead letter marker 01 made of a high-density non-self-radioactive metal is required (as Figure 1 shown), and its shape and size are usually about 27mm * 7mm * 2mm. When performing ray penetration operations, marker 01 is attached to the outside of the film cassette by an adhesive or other accessories. After the ray detection operation is completed, the metal markers attached to the cassette need to be peeled off, and at this time, a large number of disordered markers 01 will be generated. Usually, the recycling and classification of marker 01 are completed manually by staff, which not only has low efficiency, prolongs the operation time, and has a low accuracy rate, but also adds an operation burden to the staff; increasing the labor cost of the testing unit and enterprise. More seriously, when the staff classifies marker 01 in a hurry or fatigue state, mistakes will occur, which will seriously affect the efficiency of the detection work and even cause additional economic losses. Summary of the Invention

[0004] The present invention provides an automatic sorting device for ray detection markers, which can achieve rapid and accurate collection of markers, reduce the labor intensity of ray detection personnel, improve the recycling accuracy rate, thereby improving work efficiency and reducing the risk of additional economic losses in detection work.

[0005] To achieve the above object, the present invention adopts the following technical solution: A ray detection marker automatic sorting device, including a workbench and a recycling box installed on the workbench. The recycling box is in a "C"-shaped open circular ring shape, with a partition plate arranged between its inner and outer wall plates, and a detachable material box is installed in the cavity formed between two adjacent partition plates; A motor base is installed at the center position of the recycling box, a stepping motor is installed on the motor base, and the upper end of the stepping motor is connected with a bidirectional adapter sleeve; A push rod support, an upper camera support and a hopper support are fixedly installed on the workbench outside the circular opening of the recycling box; A horizontal electric push rod is installed at the top of the push rod support, and a push block is connected to the inner end of the horizontal electric push rod; A support is fixed inside the push rod support, a pressure sensor is installed on the support, a buffer box is installed at the upper end of the support, guide platforms are arranged on both sides of the through slot at the lower end of the buffer box, and the entrance side of the through slot faces the push block; A transparent placement table is arranged below the exit side of the through slot, and the transparent placement table is connected with the bidirectional adapter sleeve through a linear servo motor; An upper camera is fixedly installed above the upper camera support, a lower camera is arranged directly below the upper camera correspondingly, and the lower camera is fixedly connected with the motor base through a lower camera support; A transparent placement table is correspondingly arranged between the upper camera and the lower camera; The hopper support is in a four-legged fork-shaped structure, and an inverted triangular storage hopper is installed on it. A notch is arranged at the upper edge of one side of the storage hopper relative to the buffer box, and a sliding material guide groove is connected between the notch and the buffer box; An upper material sliding block is installed in the storage hopper; The upper material sliding block is in a right-angled trapezoid shape, the upper part of which is the hypotenuse of the right-angled trapezoid, and a "U"-shaped inclined sliding groove is arranged on the hypotenuse. The lower right-angled side of the upper material sliding block is connected with a longitudinal electric push rod, and the lower end of the longitudinal electric push rod is connected with the workbench through a base; The longitudinal electric push rod, the horizontal electric push rod, the pressure sensor, the upper camera, the lower camera, the linear servo motor and the stepping motor are all connected to the console circuit outside the recycling box and form a central control system.

[0006] Further, the shapes of the entrance and exit of the through slot are larger than the longitudinal outer shape of the marker and larger than the end shape of the push block.

[0007] Further, the thickness of the push block is the same as the thickness of the marker, and the height of the through slot corresponds to the thickness of the push block.

[0008] Further, the upper opening of the detachable material box is larger than the planar size of the marker.

[0009] Further, a single-chip microcomputer of model STM32F103RCT6 is installed in the console.

[0010] A method for using an automatic sorting device for radiation detection markers. First, the markers to be sorted are put into the storage hopper. At this time, the hypotenuse of the feeding slider is located below the storage hopper. Then, the power of the control console is turned on. The feeding slider at the upper end of the longitudinal electric push rod lifts the markers that fall into the "U"-shaped inclined chute, while the markers that do not get stuck in the inclined chute fall back into the storage hopper from both sides of the feeding slider. When the markers in the inclined chute are pushed up by the feeding slider until the notch at the upper end of the storage hopper and are aligned with the entrance of the sliding material guide groove, the markers will slide down along the sliding material guide rail into the connected buffer box and stack in the buffer box. When the pressure sensor below the buffer box detects that there are markers in the buffer box, the transverse electric push rod located on one side of the bottom of the buffer box is activated. Through the push block, the marker at the bottom of the buffer box is pushed out from the outlet of the through groove. The pushed-out marker enters the transparent placing table. At this time, the upper and lower cameras simultaneously take pictures and perform image recognition on the marker. The central control system obtains the feature code of the marker through the upper and lower cameras, matches it with the feature code data set stored in the control console, and controls the stepping motor according to the feature code. The release mechanism composed of the bidirectional adapter sleeve, the linear servo and the transparent placing table is rotated to the corresponding detachable material box, and then the linear servo releases the marker carried on the transparent placing table and falls into the corresponding detachable material box. After the marker is released, the stepping motor controls the release mechanism to reset, and the transverse electric push rod resets to complete a single sorting.

[0011] The present invention improves the attitude uniformity of the markers during discharging, avoids the accumulation and blockage of the markers during discharging, thereby improving the overall recognition efficiency and classification quality. It has higher classification accuracy, good stability and adaptability, and achieves the purpose of high precision, high efficiency, modularization and low coupling. It can identify both the front and back sides of the markers at the same time, avoiding the influence of image recognition due to the uncertain factors of the placement attitude of the markers, effectively improving the marker recognition efficiency, ensuring the working stability in a complex environment, and making it convenient to take the sorted markers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic three-dimensional view of the marker 01 in the invention; Figure 2 Front view of the present invention; Figure 3 Partial sectional side view of the present invention; Figure 4 Top view of the present invention; Figure 5 Combined structure diagram of the longitudinal electric push rod 5, the storage hopper 3 and the feeding slider 1 in the invention; Figure 6 Sectional view of the installation structure of the detachable material box 22 in the recycling box 21 in the invention; Figure 7Schematic diagram of the three-dimensional structure of the present invention; Figure 8 Isometric view of the present invention; Figure 9 Combined structure diagram of the buffer box 8 and the support 26 in the present invention; In the figure: 1 - feeding slider, 2 - inclined chute, 3 - storage hopper, 4 - hopper support, 5 - longitudinal electric push rod, 6 - base, 7 - material sliding guide groove, 8 - buffer box, 81 - through groove, 82 - guide platform; 9 - pressure sensor, 10 - transverse electric push rod, 11 - push rod support, 12 - upper camera support, 13 - lower camera support, 14 - upper camera, 15 - lower camera, 16 - transparent storage table, 17 - linear servo, 18 - bidirectional adapter sleeve, 19 - stepping motor, 20 - motor base, 21 - recycling box, 22 - detachable material box, 23 - partition, 24 - workbench, 25 - push block, 26 - support, 27 - console. Detailed implementation manners

[0013] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. Refer to Figures 1 to 9, A ray detection marker automatic sorting device, including a workbench 24 and a recycling bin 21 installed on the upper surface of the workbench 24. The recycling bin 21 is in a "C"-shaped open circular ring shape, and a partition 23 is arranged between its inner and outer wall plates. A detachable material box 22 is installed in the cavity formed between two adjacent partitions 23; the upper opening of the detachable material box 22 is larger than the planar size of the marker 01. A motor base 20 is installed at the central position of the recycling bin 21, a stepping motor 19 is installed on the upper surface of the motor base 20, and the upper end of the stepping motor 19 is connected with a bidirectional adapter sleeve 18; a push rod bracket 11, an upper camera bracket 12 and a hopper bracket 4 are fixedly installed on the workbench 24 outside the circular opening of the recycling bin 21; a horizontal electric push rod 10 is installed at the top of the push rod bracket 11, and the inner end of the horizontal electric push rod 10 is connected with a push block 25; a support 26 is fixed inside the push rod bracket 11, a pressure sensor 9 is installed on the support 26, a buffer box 8 is installed at the upper end of the support 26, and guide platforms 82 are arranged on both sides of the through groove 81 at the lower end of the buffer box 8. The entrance side of the through groove 81 faces the push block 25; the shapes of the entrance and exit of the through groove 81 are larger than the longitudinal outer shape of the marker 01 and larger than the outer shape of the end of the push block 25. The thickness of the push block 25 is the same as the thickness of the marker 01, and the height of the through groove 81 corresponds to the thickness of the push block 25. A transparent storage platform 16 is arranged below the exit side of the through groove 81, and the transparent storage platform 16 is connected with the bidirectional adapter sleeve 18 through a linear servo 17; an upper camera 14 is fixedly installed above the upper camera bracket 12, a lower camera 15 is arranged directly below the upper camera 14 correspondingly, and the lower camera 15 is fixedly connected with the motor base 20 through a lower camera bracket 13; a transparent storage platform 16 is correspondingly arranged between the upper camera 14 and the lower camera 15; the hopper bracket 4 is in a four-legged fork-shaped structure, and an inverted triangular storage hopper 3 is installed on it. A notch is arranged at the upper edge of one side of the storage hopper 3 relative to the buffer box 8, and a sliding material guide groove 7 is connected above the notch and the buffer box 8; an upper feeding slider 1 is installed in the storage hopper 3; the upper feeding slider 1 is in a right-angled trapezoid shape, the upper part is the hypotenuse of the right-angled trapezoid, and a "U"-shaped inclined chute 2 is arranged on the hypotenuse. The lower right-angled side of the upper feeding slider 1 is connected with a longitudinal electric push rod 5, and the lower end of the longitudinal electric push rod 5 is connected with the workbench 24 through a base 6; the longitudinal electric push rod 5, the horizontal electric push rod 10, the pressure sensor 9, the upper camera 14, the lower camera 15, the linear servo 17 and the stepping motor 19 are all electrically connected with a console 27 outside the recycling bin 21 and form a central control system. A single-chip microcomputer of model STM32F103RCT6 is installed in the console 27.

[0014] A method of using an automatic sorting device for ray detection markers. First, the markers to be sorted are put into the storage hopper 3. At this time, the hypotenuse of the feeding slider 1 is located below the storage hopper 3. Then, the power of the console 27 is turned on. The feeding slider 1 at the upper end of the longitudinal electric push rod 5 lifts the markers 01 that fall into the "U"-shaped inclined chute 2, while the markers 01 that do not get stuck in the inclined chute 2 fall back into the storage hopper 3 from both sides of the feeding slider 1. When the markers 01 in the inclined chute 2 are pushed up by the feeding slider 1 until the notch at the upper end of the storage hopper 3 and are aligned with the entrance of the sliding material guide groove 7, the markers 01 will slide down along the sliding material guide rail 7 into the connected buffer box 8 and stack in the buffer box 8. When the pressure sensor 9 below the buffer box 8 detects that there are markers 01 in the buffer box 8, the transverse electric push rod 10 located on one side of the bottom of the buffer box 8 is activated. Through the push block 25, the marker 01 at the bottom of the buffer box 8 is pushed out from the outlet of the through groove 81. The pushed-out marker 01 enters the transparent placement table 16. At this time, the upper and lower cameras 14 and 15 simultaneously take pictures and perform image recognition on the marker 01. The central control system obtains the feature code of the marker 01 through the upper and lower cameras 14 and 15, matches it with the feature code data set stored in the console 27, and controls the stepping motor 19 according to the feature code. The release mechanism composed of the bidirectional adapter sleeve 18, the linear servo 17 and the transparent placement table 16 is rotated to the corresponding detachable material box 22. Subsequently, the linear servo 17 releases the marker 01 carried on the transparent placement table 16, and it falls into the corresponding detachable material box 22. After the release of the marker 01 is completed, the stepping motor 19 controls the release mechanism to reset, and the transverse electric push rod 10 resets, completing a single sorting.

[0015] Embodiment: The following introduces a preferred implementation of the present invention in conjunction with the drawings. In the device of the present invention: The console 27 is equipped with a single-chip microcomputer peripheral expansion board of model STM32F103RCT6, designed using JLCPCB EDA, and is used to install the STM32F103RCT6 single-chip microcomputer, the stepping motor drive module, the power supply, and the drive interfaces for connecting the camera, the linear servo, the electric push rod, and the pressure sensor.

[0016] The stepping motor 19 adopts an A4988 drive module.

[0017] The stepping motor 19 is a 42-series stepping motor.

[0018] The linear servo 17 is an SG90 servo.

[0019] The pressure sensor is an SBT641A-type pressure sensor.

[0020] Both the upper camera 14 and the lower camera 15 are MAIX-II M2dock-type cameras.

[0021] The vertical and horizontal electric push rods 5 and 10 are all electric telescopic rods of the KT2D0905 model.

[0022] Use C language to write program code in the Keil uVision5 software and burn it into the STM32F103RCT6 single-chip microcomputer to control the overall operation of the device.

[0023] All the structural components of the mechanism in the present invention are made by 3D printing. The 3D printing consumables used are PLA-CF high-strength carbon fiber composite materials. The storage hopper 3 is in an inverted triangle shape and can hold about 500 markers. If the number of markers needs to be increased, the volume of the storage hopper 3 needs to be increased, and appropriately, the volumes of other components also need to be increased accordingly. The inner wall width of the inclined chute 2 of the feeding slider 1 should be about 1MM larger than the width of the marker. At the same time, the inner wall widths of the material sliding guide groove 7 and the buffer box 8 should be the same as the inner wall width of the inclined chute 2 to ensure that the marker 01 can slide from the inclined chute 2 into the material sliding guide groove 7 and then smoothly fall into the buffer box 8. The thickness of the push block 25 connected to the inner end of the horizontal electric push rod 10 is the same as the thickness of one marker 01. At the same time, the height of the through groove 81 is the same as the thickness of the push block 25 to ensure that the horizontal electric push rod 10 only ejects one marker 01 each time. The transparent placement table 16 is made of transparent non-reflective acrylic board to ensure the recognition of the front and back sides of the marker 01 by the upper and lower cameras 14 and 15. The recycling box 21 is in a "C"-shaped open circular ring shape, and the overall length of the release structure is between the inner and outer radii of the recycling box 21. In addition, a partition 23 is provided between the inner and outer walls of the recycling box 21, and cavities are formed between adjacent partitions. A detachable material box 22 is installed in the cavity. The upper opening of the detachable material box 22 is larger than the planar size of the marker 01, so that the markers 01 can be laid flat and stacked in the detachable material box 22.

[0024] When the present invention is in use, the marker 01 to be sorted is put into the storage hopper 3, and then the power supply of the recovery device is turned on to start the device; the longitudinal electric push rod 5 starts to work, and the feeding slider 1 lifts the marker 01 that has fallen into the inclined chute 2, and the marker 01 that has not been caught in the inclined chute 2 falls back into the storage hopper 3 from both sides of the feeding slider 1; the marker 01 in the inclined chute 2 is lifted with the feeding slider 1 until the inclined chute 2 of the feeding slider 1 aligns with the entrance of the sliding material guide groove 7, and the marker 01 slides down along the slide rail guide groove 7 into the buffer box 8; when the feeding slider 1 reaches the highest position, it will stay for about two seconds under the control of the central control system and then reset; after the marker 01 slides into the sliding material guide groove 7, it will slide into the connected buffer box 8, and the marker 01 is stacked in the buffer box 8; the pressure sensor 9 in the buffer box 8 is always turned on to detect whether there is too much or any marker 01 in the buffer box 8. When the pressure sensor 9 detects that there is a marker 01 in the buffer box 8, it sends an opening instruction for the transverse electric push rod 10 to the central control system, and the central control system then sends an opening instruction to the transverse electric push rod 10, and the transverse electric push rod 10 starts to work; when the pressure sensor 9 detects that there is too much marker 01 in the buffer box 8, it sends a stop instruction for the longitudinal electric push rod 5 to the central control system, and the central control system then sends a stop instruction to the longitudinal electric push rod 5, and the longitudinal electric push rod 5 stops working and waits for 30S, and the central control system automatically sends an opening instruction to the longitudinal electric push rod 5, and the longitudinal electric push rod 5 continues to work; when the pressure sensor 9 senses that there is no marker 01 in the buffer box 8, it sends a stop instruction for the transverse electric push rod 10 to the central control system, and the central control system then sends a stop instruction to the transverse electric push rod 10, and the transverse electric push rod 10 stops working; the transverse electric push rod 10 works to push out the single marker at the bottom of the buffer box 8, and the pushed-out marker 01 will fall onto the transparent placement table 16. At this time, the upper and lower cameras 14 and 15 start to work simultaneously; the front and back sides of the marker 01 are photographed and image recognized to obtain a feature code, which is sent to the control console 27, and the control console 27 then matches it with the feature code stored in itself; when the matching is completed, the control console 27 controls the stepping motor 19 to rotate the release mechanism to the detachable material box 22 that matches the feature code, and controls the linear servo 17 to release the marker 01 carried on the transparent placement table 16, and the marker 01 falls into the corresponding detachable material box 22; after the release is completed, the stepping motor 19 controls the release mechanism to reset, and the transverse electric push rod 10 resets, completing a single sorting; after a single recognition is completed, the system resets. Repeating this process, the sorting of the marker 01 can be carried out multiple times.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not limited to the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic sorting device for radiation detection markers, comprising a workbench (24) and a recycling bin (21) installed on the workbench (24), characterized in that, The recycling bin (21) is in the shape of a "C"-shaped open ring, and a partition (23) is arranged between its inner and outer wall plates. A detachable material box (22) is installed in the cavity formed between two adjacent partitions (23); a motor base (20) is installed at the central position of the recycling bin (21), a stepping motor (19) is installed on the motor base (20), and the upper end of the stepping motor (19) is connected with a bidirectional adapter sleeve (18); on the outer workbench (24) relative to the annular opening of the recycling bin (21), a push rod bracket (11), an upper camera bracket (12) and a hopper bracket (4) are fixedly installed; a horizontal electric push rod (10) is installed at the top of the push rod bracket (11), and the inner end of the horizontal electric push rod (10) is connected with a push block (25); a support (26) is fixed on the inner side of the push rod bracket (11), a pressure sensor (9) is installed on the support (26), a buffer box (8) is installed at the upper end of the support (26), guide platforms (82) are arranged on both sides of the through groove (81) at the lower end of the buffer box (8), and the inlet side of the through groove (81) faces the push block (25); a transparent storage table (16) is arranged below the outlet side of the through groove (81), and the transparent storage table (16) is connected with the bidirectional adapter sleeve (18) through a linear servo (17); An upper camera (14) is fixedly installed above the upper camera bracket (12), a lower camera (15) is arranged directly below the upper camera (14) correspondingly, and the lower camera (15) is fixedly connected with the motor base (20) through a lower camera bracket (13); a transparent storage table (16) is correspondingly arranged between the upper camera (14) and the lower camera (15); The hopper bracket (4) is in a four-legged fork shape, and an inverted triangular storage hopper (3) is installed on it. A notch is arranged at the upper edge of one side of the storage hopper (3) relative to the buffer box (8), and a sliding material guide groove (7) is connected above the notch and the buffer box (8); an upper feeding slider (1) is installed in the storage hopper (3); the upper feeding slider (1) is in the shape of a right trapezoid, the upper part of which is the hypotenuse of the right trapezoid, and a "U"-shaped inclined chute (2) is arranged on the hypotenuse. The lower right-angled side of the upper feeding slider (1) is connected with a longitudinal electric push rod (5), and the lower end of the longitudinal electric push rod (5) is connected with the workbench (24) through a base (6); The longitudinal electric push rod (5), the horizontal electric push rod (10), the pressure sensor (9), the upper camera (14), the lower camera (15), the linear servo (17) and the stepping motor (19) are all electrically connected to a control console (27) outside the recycling bin (21) and form a central control system.

2. The automatic sorting device for ray detection markers according to claim 1, wherein The shapes of the inlet and outlet of the through groove (81) are larger than the longitudinal outer shape of the marker (01) and larger than the outer shape of the end of the push block (25).

3. The automatic sorting device for ray detection markers according to claim 1, characterized in that, The thickness of the push block (25) is the same as the thickness of the marker (01), and the height of the through groove (81) corresponds to the thickness of the push block (25).

4. The automatic sorting device for ray detection markers according to claim 1, characterized in that, The upper opening of the detachable material box (22) is larger than the planar size of the marker (01).

5. The automatic sorting device for ray detection markers according to claim 1, wherein The control console (27) is equipped with a single-chip microcomputer of model STM32F103RCT6.

6. A method for using the automatic sorting device for ray detection markers according to claim 1, characterized in that, First, the markers to be sorted are put into the storage hopper (3). At this time, the hypotenuse of the feeding slider (1) is located below the storage hopper (3). Then, the power supply of the console (27) is turned on. The feeding slider (1) at the upper end of the longitudinal electric push rod (5) lifts the markers (01) that fall into the "U"-shaped inclined chute (2), while the markers (01) that do not get stuck in the inclined chute (2) fall back into the storage hopper (3) from both sides of the feeding slider (1). The markers (01) in the inclined chute (2) are pushed up by the feeding slider (1) until they reach the notch at the upper end of the storage hopper (3) and align with the entrance of the sliding material guide groove (7). Then, the markers (01) slide down along the sliding material guide rail (7) into the connected buffer box (8) and stack in the buffer box (8). When the pressure sensor (9) below the buffer box (8) detects that there are markers (01) in the buffer box (8), the transverse electric push rod (10) located on one side of the bottom of the buffer box (8) starts. Through the push block (25), the marker (01) at the bottom of the buffer box (8) is pushed out from the outlet of the through groove (81). The pushed-out marker (01) enters the transparent placement table (16). At this time, the upper and lower cameras (14), (15) simultaneously take pictures of and perform image recognition on the marker (01). The central control system obtains the feature code of the marker (01) through the upper and lower cameras (14), (15), matches it with the feature code data set stored in the console (27), and controls the stepping motor (19) according to the feature code. The release mechanism composed of the bidirectional adapter sleeve (18), the linear servo (17) and the transparent placement table (16) is rotated to the corresponding detachable material box (22). Subsequently, the linear servo (17) releases the marker (01) carried on the transparent placement table (16), and it falls into the corresponding detachable material box (22). After the release of the marker (01) is completed, the stepping motor (19) controls the release mechanism to reset, and the transverse electric push rod (10) resets, completing a single sorting operation.

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