Turnover air-blowing mechanism for ultrasonic detection of shell shell

Abstract

The utility model discloses a turnover air-blowing mechanism for ultrasonic detection of a shell shell, which comprises a blanking roller way mechanism and a turnover air-blowing mechanism, the blanking roller way mechanism comprises a blanking support, and a conveying roller way and a clamping jaw which are arranged on the blanking support; the overturning blowing mechanism comprises an overturning disc, a driving mechanism for driving the overturning disc to rotate, an air blowing device and two clamping assemblies installed on the overturning disc. The overturning air-blowing mechanism is high in working efficiency, synchronous air-blowing and overturning discharging are achieved through double-station operation, air-blowing drying operation can be conducted on workpieces of different specifications, the workpieces are synchronously overturned to enter a subsequent discharging station after air-blowing, and the overturning air-blowing mechanism is high in reliability, easy to operate, high in safety and good in maintainability.

Description

Technical Field

[0001] This utility model belongs to the field of ultrasonic testing technology, and more specifically, relates to a flipping air blowing mechanism for ultrasonic testing of artillery shell casings. Background Technology

[0002] Ultrasonic testing is a method of inspecting defects in parts by utilizing the characteristic that ultrasonic waves are incident on the interior of metal materials and reflected at the interface edges when they enter from one cross section to another. When ultrasonic waves pass from the surface of a part through an ultrasonic probe into the interior of the metal, they are reflected when they encounter defects and the bottom surface of the part, forming pulse waveforms on a fluorescent screen. The location and size of the defects are determined based on these pulse waveforms.

[0003] The propellant cartridge case of a cylindrical artillery shell is generally made of metal and is quite thick, ranging from about 0.3 mm at its thinnest point to about 30 mm at its thickest. Its length can reach up to 2000 mm, and its diameter up to 300 mm. Furthermore, the wall thickness at the bottom of the cartridge case differs from that of the outer casing, ranging from about 0.5 mm at its thinnest point to about 80 mm at its thickest. The overall shape of the cartridge case varies, requiring high precision in inspection and posing a significant challenge to flaw detection.

[0004] There are few existing flaw detection devices for cartridge shells, and their detection efficiency is low, making it impossible to achieve fully automated drying and batch flaw detection. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to overcome the shortcomings of the prior art and provide a flipping air blowing mechanism for ultrasonic testing of artillery shell casings.

[0006] Technical solution: The present invention provides a flipping air blowing mechanism for ultrasonic testing of artillery shell casings, comprising a feeding roller conveyor mechanism and a flipping air blowing mechanism. The feeding roller conveyor mechanism includes a feeding bracket and a conveyor roller and a clamping claw mounted on the feeding bracket. The flipping air blowing mechanism includes a flipping disc and a driving mechanism for driving the flipping disc to rotate, an air blowing device, and two clamping components mounted on the flipping disc.

[0007] In some embodiments, the clamping claw includes a cylindrical clamping mechanism consisting of an end limiting groove and multiple clamping grooves.

[0008] In some embodiments, the angles of the grooves on each of the clamping slots are different.

[0009] In some embodiments, the spacing between the various clamping slots is adjustable.

[0010] In some embodiments, the driving mechanism includes a drive motor, a drive shaft, and a drive gear. The drive motor is coaxially connected to the drive shaft, the drive gear is mounted on the drive shaft, and the drive gear meshes with a gear on the outer circumference of the rotating disk, thereby driving the rotating disk to rotate.

[0011] In some embodiments, the two clamping components have the same structure.

[0012] In some embodiments, the two clamping assemblies include one clamping assembly comprising a first bracket and a first jaw, and the other clamping assembly comprising a second bracket and a second jaw.

[0013] In some embodiments, the nozzle of the air blowing device faces upward.

[0014] Beneficial effects: The beneficial effects of this utility model are as follows:

[0015] (1) The flipping blowing mechanism of this utility model, wherein the clamping claw in the feeding roller mechanism includes an end limiting groove and a cylinder clamping mechanism composed of multiple clamping grooves. The groove angles on each clamping groove are different, so as to adapt to the cartridge shells of different diameters. The spacing between each clamping groove can be adjusted, so as to be suitable for cartridge shells of different lengths.

[0016] (2) The flipping blowing mechanism of this utility model has two clamping components installed on one side of the flipping plate. One clamping component includes a first bracket and a first gripper, and the other clamping component includes a second bracket and a second gripper. When the clamping station is parallel to the conveyor belt, the cartridge shells move forward in sequence and fall to the clamping station. After the clamping station hugs the shell, it rotates 90 degrees to form a shape with the left shell opening downward and the right shell opening upward. The shell with the left opening downward is just above the air nozzle of the air blowing device. The air nozzle blows the inside of the cartridge shell dry. The shell with the right opening upward is dried at the left station and then rotates 180 degrees to reach the right station. At the same time, the upward opening is just enough to satisfy the gripping of the shell by the inner support gripper of the unloading robot. After the robot takes away the cartridge, the empty clamping station rotates 90 degrees and returns to the bottom of the conveyor belt. The conveyor belt drops the shell into the empty clamping station, and the cycle repeats.

[0017] (3) The flipping air blowing mechanism of this utility model has high working efficiency. It adopts dual-station operation for synchronous air blowing and flipping discharge, and can perform air blowing drying operation on workpieces of different specifications. After air blowing, it is synchronously flipped into the subsequent discharge station. Moreover, it has high reliability, simple operation, high safety and good maintainability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of one embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the flipping air blowing mechanism according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the entire detection system structure according to one embodiment of the present invention. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc., which indicate the orientation or positional relationship shown, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0025] Example 1

[0026] like Figures 1 to 3 As shown in Figure 1, a flipping air blowing mechanism for ultrasonic testing of artillery shell casings includes a feeding roller conveyor mechanism 4 and a flipping air blowing mechanism 8. As shown in Figure 1, the feeding roller conveyor mechanism 4 includes a feeding bracket 41 and a conveyor roller conveyor 42 and a clamping claw mounted on the feeding bracket 41. The clamping claw includes a cylinder clamping mechanism composed of an end limiting groove 43 and multiple clamping grooves 44. The groove angles on each clamping groove 44 are different, so as to adapt to cartridge shells of different diameters. The spacing between each clamping groove 44 can be adjusted, so as to be suitable for cartridge shells of different lengths.

[0027] like Figure 1 and Figure 2 As shown, the flipping air blowing mechanism 8 includes a flipping disk 83 and a drive mechanism for driving the flipping disk 83 to rotate, an air blowing device 84, and two clamping assemblies mounted on the flipping disk 83. The drive mechanism includes a drive motor 81, a drive shaft, and a drive gear 82. The drive motor 81 is coaxially connected to the drive shaft, and the drive gear 82 is mounted on the drive shaft and meshes with a gear on the outer circumference of the flipping disk 83, thereby driving the flipping disk 83 to rotate.

[0028] At the same time, such as Figure 2 As shown, two clamping assemblies are installed on one side of the flip plate 83. One clamping assembly includes a first bracket 86 and a first gripper 85, and the other clamping assembly includes a second bracket 88 and a second gripper 87.

[0029] When the clamping station is parallel to the conveyor belt (e.g.) Figure 1 As shown), the cartridge cases advance sequentially and fall into the clamping station. After the clamping station grips the case, it rotates 90 degrees to form a shape where the left side of the case opens downwards and the right side opens upwards (as shown). Figure 2 As shown), the shell with its left opening facing downwards is positioned directly above the air nozzle of the air blowing device 84 (fixed position). The air nozzle dries the inside of the cartridge shell. The shell with its right opening facing upwards rotates 180 degrees after being dried at the left station to reach the right station. At the same time, the upward opening perfectly satisfies the gripper of the unloading robot to grasp the shell. After the robot removes the cartridge, the empty clamping station rotates 90 degrees and returns to the bottom of the conveyor belt. The conveyor belt then drops the shell into the empty clamping station, and the cycle repeats.

[0030] like Figure 3 The diagram shown is a schematic representation of the complete automated testing system used in this testing device. This system specifically includes:

[0031] The loading system uses robots or trusses to place the shell casings to be tested to the testing station.

[0032] The ultrasonic testing system uses the water immersion method or semi-water immersion method to simultaneously perform ultrasonic flaw detection on the cylinder and bottom of the shell to be tested (A scan, B scan, C scan; phased array ultrasonic testing method is also applicable).

[0033] The flip-out air-blowing mechanism (i.e., this utility model) performs an air-blowing drainage operation on the tested shell casing to ensure that it is completely dry.

[0034] The feeding and sorting system places the tested shell casings into designated workstations according to whether they are qualified or unqualified.

[0035] The loading system includes a loading robot 1 (or a truss) and a loading trolley 2. The loading robot 1 or the truss is equipped with a vision recognition system. The loading robot 1 is a 6-axis robot. The robot uses its attached vision system to grasp the cartridges arranged in the trolley. The grasped cartridges are placed on a positioning device 11. The positioning device 11 uses a pneumatic device to push the cartridges to the positioning point, ensuring that the grippers of the handling and holding mechanism accurately place the cartridges into the detection station after grasping them, ensuring accurate probe placement.

[0036] The contact area between the loading trolley 2 and the cartridge shell is made of nylon to prevent collisions. Four wheels are installed at the bottom so that personnel can push it freely. The bottom of the trolley is welded with the fork arm fixing position when the forklift lifts the material tray for transfer.

[0037] Ultrasonic testing systems, such as Figure 1 As shown, it includes a transport and clamping mechanism 9 and a detection host mechanism 3. The transport and clamping mechanism 9 clamps the shell casing to be tested from the positioning device 11 to the detection host mechanism 3 for ultrasonic testing.

[0038] The handling and clamping mechanism 9 includes two columns, a crossbeam, a guide rail, a translation module, a lifting module, and pneumatic grippers. The pneumatic grippers include a feeding gripper and a discharging gripper. The translation module is slidably connected to the guide rail and moves horizontally along the guide rail. The lifting module is mounted on the translation module, and the pneumatic grippers are mounted on the lifting module. The feeding gripper and the discharging gripper are connected by a connecting bracket. The feeding gripper grips the cartridge case to be inspected at the positioning device 11, while the discharging gripper simultaneously clamps the inspected cartridge case to the discharging point. The pneumatic gripper also has a self-locking device to prevent the case from slipping out when the power or gas supply is interrupted.

[0039] The main inspection unit 3 includes an inspection water tank, a water circulation system 10, a shell inspection module, a bottom inspection module, a multi-channel flaw detector system, and a drive wheel module. The shell inspection module and the bottom inspection module are both installed on the inspection water tank and are used to perform ultrasonic inspection on the shell and bottom of the shell, respectively. The inspection probes in the shell inspection module and the bottom inspection module are connected to the multi-channel flaw detector system, and the flaw detection results are processed and analyzed by the software in the host computer of the multi-channel flaw detector system.

[0040] The multi-channel flaw detector system uses the latest multi-channel ultrasonic flaw detector developed by Shanchao Company. It features full-process storage and playback, head and tail removal, audible and visual alarms, full-channel monitoring, flaw detection report printing, and internal and external flaw marking signal output. The storage function includes the test data and waveforms of each pipe and rod. The waveform diagram displays the gate's amplitude limit, and the qualified and unqualified waveforms can be distinguished by color.

[0041] The drive wheel module is located in the testing water tank and includes one or more sets for driving the shell casing to rotate. The drive wheel module includes a drive motor and a drive shaft. Anti-slip drive rollers are installed at intervals on the drive shaft. The rotation of the cartridge case is achieved by placing the cartridge case to be tested on the drive rollers in pairs for support.

[0042] When multi-station testing is required, multiple drive wheel modules can be set up. Furthermore, to accommodate cartridge cases of different diameters, the spacing between each drive wheel module is adjustable, allowing for adaptation to cartridge cases ranging from Ф30 to 300mm in size.

[0043] The water circulation system 10 is located outside and connected to the testing water tank, used to circulate and replace the water in the testing water tank. Water is used as the coupling medium during flaw detection, and effective coupling during ultrasonic testing must be ensured. The main function of the coupling water supply system is to control a constant pressure to complete the circulation of the coupling water, thereby ensuring perfect coupling of the ultrasonic signal. The coupling water supply system of this equipment flows through the main water pipe, hose, probe, and ground trench to the underground sewage collection tank, and then is pumped to the treatment device. The treatment device consists of a stainless steel water tank with a filter, a circulation pump, and other components. A low-pressure pump is used for coupling water circulation, and a high-pressure pump is used for high-pressure cleaning. A dedicated level switch is installed in the collection pit for monitoring the level of the coupling water system.

[0044] The shell detection module includes a horizontal moving mechanism, a vertical lifting mechanism, and a shell multi-axis detection probe frame. The vertical lifting mechanism is mounted on the horizontal moving mechanism, and the shell multi-axis detection probe frame is mounted on the vertical lifting mechanism. The horizontal moving mechanism is a horizontal moving module composed of a slide rail, a slider, and a lead screw. The vertical lifting mechanism is composed of a worm gear lifting reducer, a transmission chain, a lifting guide screw, and a connecting platform. The worm gear drives the shell multi-axis detection probe frame to move up and down.

[0045] The probe holder is equipped with one or more shell probe assemblies. Each shell probe assembly includes a separately controlled multi-axis drive mechanism and a shell detection probe assembly mounted below. When single-station inspection is required, only one shell probe assembly needs to be set up. When multi-station inspection is required, multiple corresponding shell probe assemblies can be set up.

[0046] The multi-axis drive mechanism enables multi-directional position adjustment of the shell detection probe assembly, achieving optimal detection angle and range. The multi-axis drive mechanism's adjustment and tracking device can independently adjust the angle and water layer distance of each probe according to the size of the shell being detected, and is entirely precision-made from stainless steel, copper, and high-strength aluminum alloy. This multi-axis drive mechanism can perform contour-following motion according to the shell shape to ensure that the probe angle remains constant during detection.

[0047] The bottom inspection module includes a bottom horizontal moving mechanism, a bottom vertical lifting mechanism, and a bottom multi-axis inspection probe holder. The bottom vertical lifting mechanism is mounted on the bottom horizontal moving mechanism 37, and the bottom multi-axis inspection probe holder is mounted on the bottom vertical lifting mechanism. One or more bottom inspection probes are mounted on the bottom inspection probe holder. The bottom horizontal moving mechanism and the bottom vertical lifting mechanism adopt a similar structure to the shell inspection module above, and the bottom multi-axis inspection probe holder is used to mount the bottom inspection probes. The bottom inspection probes use one or more high-frequency ultrasonic probes to inspect along the bottom of the cartridge case, meeting the requirements for ultrasonic flaw detection of flat-bottom holes with a wall thickness of φ0.8mm*1 / 2 and φ1.2mm*1 / 2.

[0048] When performing flaw detection on the bottom, the multi-axis detection probe frame at the bottom moves simultaneously from the center to the edge or from the edge to the center to detect flaws on the bottom edge of the workpiece. Since the two motion trajectories intersect when the workpiece is rotating, the flaw detection process is completed.

[0049] The unloading and sorting system includes an unloading robot 7, a shell transport trolley 6, and an NG transport trolley 5. The unloading robot 7 is identical to the loading robot 1 and also includes a built-in vision system. When the detection system detects a defect, it sends an alarm signal to the PLC and a sorting signal to the unloading robot, which then places the defective workpiece into the NG transport trolley 5. Once full, the trolley is transported away by a forklift. Normal, defect-free cartridges are placed into the shell transport trolley 6 by the unloading robot, which is also transported away by a forklift once full.

[0050] The control hardware connections of this system specifically include: the detection probes of the cylinder shell and the bottom of the cylinder are connected to the multi-channel flaw detector system (industrial computer) through the acquisition card to view and analyze the data. At the same time, the multi-channel flaw detector system (industrial computer) is connected to the motors, robots, etc. in each mechanism through the PLCs of each channel, so as to control and adjust the motors, robots, etc. in each mechanism.

[0051] The specific working process of the aforementioned automated testing system includes:

[0052] S1. After the metal cartridge to be tested has been stress-relieved at low temperature, it is placed into the loading trolley and the loading trolley is pushed into the loading area limit.

[0053] S2. The loading robot uses a camera to locate and grab the cartridge to the positioning device. The gripper on the transport clamping mechanism moves the cartridge from the positioning device to the inspection station. The cartridge to be inspected is tilted into the water and inspected by water immersion or semi-water immersion.

[0054] S3. During inspection, the drive wheel module drives the workpiece to be inspected to rotate at a constant speed in the water tank. The shell probe group and the bottom inspection probe are respectively installed on the shell multi-axis inspection probe frame and the bottom multi-axis inspection probe frame. The shell multi-axis inspection probe frame automatically scans the longitudinal direction of the workpiece to detect defects. The inspection probe uses the water immersion method or semi-water immersion normal line focusing to detect defects inside the workpiece and near the surface. At the same time, the bottom multi-axis inspection probe frame moves from the center to the edge or from the edge to the center to inspect the bottom edge of the workpiece. Since the two motion trajectories of the workpiece intersect during rotation, the inspection process is completed.

[0055] S4. After the inspection is completed, the discharge gripper in the transport and clamping mechanism grabs the workpiece after the inspection is completed, lifts it up and transports it to the unloading roller conveyor mechanism. At the same time, the feed gripper simultaneously grabs the cartridge to be inspected from the positioning device to the inspection station for inspection. Repeat the above inspection steps.

[0056] The unloading roller conveyor conveys the inspected cartridges parallel to the clamping mechanism on the rotating mechanism. The clamping mechanism has two stations. The first clamping mechanism clamps the cartridge and rotates it downwards to pour out the water. The water in the cartridge is then quickly removed by an air blowing device. After rotating 90 degrees, the second clamping station receives the second cartridge. Then, it rotates another 90 degrees to the cartridge removal station. At this time, the multi-channel flaw detector system sends a signal to the PLC. The PLC controls the unloading robot to pick up the defective workpiece and place it in the NG (Not Found) cart. The robot removes the qualified workpiece and places it in the housing transport. After the housing transport is full, it is pushed to the storage position. This cycle is repeated until the inspection is completed.

[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A flipping air blowing mechanism for ultrasonic testing of projectile casings, characterized in that: It includes a feeding roller conveyor mechanism and a flipping air blowing mechanism. The feeding roller conveyor mechanism includes a feeding bracket and a conveyor roller and a clamping claw mounted on the feeding bracket. The flipping air blowing mechanism includes a flipping disc and a drive mechanism for driving the flipping disc to rotate, an air blowing device, and two clamping assemblies mounted on the flipping disc.

2. The flipping air blowing mechanism for ultrasonic testing of projectile casings according to claim 1, characterized in that: The clamping claw includes a cylindrical clamping mechanism consisting of an end limiting groove and multiple clamping grooves.

3. The flipping air blowing mechanism for ultrasonic testing of projectile casings according to claim 2, characterized in that: The angles of the grooves on each of the clamping slots are different.

4. The flipping air blowing mechanism for ultrasonic testing of projectile casings according to claim 2, characterized in that: The spacing between each of the clamping slots is adjustable.

5. The flipping air blowing mechanism for ultrasonic testing of projectile casings according to claim 1, characterized in that: The driving mechanism includes a drive motor, a drive shaft, and a drive gear. The drive motor is coaxially connected to the drive shaft, and the drive gear is mounted on the drive shaft and meshes with a gear on the outer circumference of the rotating disk, thereby driving the rotating disk to rotate.

6. The flipping air blowing mechanism for ultrasonic testing of projectile casings according to claim 1, characterized in that: The two clamping components have the same structure.

7. The flipping air blowing mechanism for ultrasonic testing of projectile casings according to claim 6, characterized in that: The two clamping assemblies include a first bracket and a first jaw, and a second bracket and a second jaw.

8. The flipping air blowing mechanism for ultrasonic testing of projectile casings according to claim 1, characterized in that: The nozzle of the air blowing device faces upwards.

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