Magnesium oxide rod automatic detection device

Abstract

The utility model discloses an automatic magnesium oxide rod detection device, which relates to the technical field of material detection equipment and comprises a supporting seat, two protection plates are fixedly mounted on the front side and the rear side of the top surface of the supporting seat, a conveying belt is rotatably connected between the two protection plates, and a supporting frame is fixedly mounted on the top surfaces of the two protection plates. A detection mechanism is arranged below the support frame; the flow dividing assembly is arranged on the top face of the protection plate, the integrated detection mechanism and the flow dividing assembly are arranged, and the conveying belt, the electric push rod, the driving motor, the ultrasonic sensor, the pressure sensor and the controller are matched with one another; the full-process automation of magnesium oxide rods from feeding, positioning, clamping, strength and defect synchronous detection to automatic sorting according to results is realized, the detection efficiency is improved, and the labor cost and errors are reduced.

Description

Technical Field

[0001] This utility model relates to the field of material testing equipment technology, specifically an automatic testing device for magnesium oxide rods. Background Technology

[0002] Magnesium oxide rods, as functional components with properties such as high temperature resistance, good insulation, and stable thermal conductivity, are widely used in industrial heating, refractory materials, and environmental chemical industries. Their quality directly affects the safety, stability, and service life of downstream products; therefore, quality inspection of magnesium oxide rods is a crucial step in the production process.

[0003] A search revealed a Chinese patent with publication number CN210834747U, which discloses a device for detecting microcracks in magnesium oxide in an electric heating tube. The device includes a withstand voltage tester and an oscilloscope. The withstand voltage tester has two pointers, a first pointer and a second pointer. The first pointer is connected to the lead-out rod of the electric heating tube, and the second pointer is connected to the outer shell of the electric heating tube. The second pointer is also connected to the oscilloscope. This invention can quickly detect the presence of microcracks in magnesium oxide and has the advantages of simple structure, convenient operation, and low cost.

[0004] However, existing detection devices have limited functionality and can typically only detect specific defects in magnesium oxide, such as microcracks. They cannot provide rapid and quantitative assessments of the comprehensive mechanical properties of magnesium oxide rods, such as compressive strength.

[0005] Therefore, based on the above-mentioned search and combined with existing technologies, an automatic detection device for magnesium oxide rods is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an automatic detection device for magnesium oxide rods to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An automatic detection device for magnesium oxide rods includes a support base, two protective plates fixedly installed on the front and rear sides of the top surface of the support base, a conveyor belt rotatably connected between the two protective plates, a support frame fixedly installed on the top surface of the two protective plates, a detection mechanism arranged below the support frame, and a diversion component disposed on the top surface of the protective plates.

[0009] Preferably, the testing mechanism includes: an electric actuator, which is fixedly installed on the bottom surface of the support frame, and a lifting plate is fixedly installed at the output end of the electric actuator, with a moving groove provided on the left side wall of the lifting plate.

[0010] Preferably, the detection mechanism further includes: a threaded rod, which is rotatably connected to the inner wall of the movable groove. The outer surface of the threaded rod is provided with two sections of threads with opposite directions of rotation. Each section of the threaded rod with opposite directions of rotation is provided with a movable block. A clamping plate is fixedly installed on the left side wall of each of the two movable blocks. A rotating column is rotatably connected to the adjacent surfaces of the two clamping plates. A pressure sensor is provided in each of the two rotating columns.

[0011] Preferably, the detection mechanism further includes: a drive motor, which is fixedly installed on the front side wall of the lifting plate, the output end of the drive motor is connected to the side wall of the threaded rod, and the top surface of the support frame is provided with a mounting groove in which an ultrasonic sensor is fixedly installed.

[0012] Preferably, the diversion assembly includes: a fixed plate, which is fixedly installed on the top surface of two protective plates; a baffle is fixedly installed on the bottom surface of the fixed plate, the bottom surface of the baffle is in contact with the top surface of the conveyor belt; an L-shaped connecting rod is fixedly installed on the top surface of the fixed plate; a connecting block is fixedly installed on the bottom surface of the L-shaped connecting rod; a servo motor is fixedly installed in the connecting block; a diversion plate is provided at the output end of the servo motor; and the bottom surface of the diversion plate is in contact with the top surface of the conveyor belt.

[0013] Preferably, a distribution box is fixedly installed on the left side wall of the support base, and a controller is fixedly installed on the front side wall of the support base.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, by setting up an integrated detection mechanism and diversion component, and by cooperating with the conveyor belt, electric push rod, drive motor, ultrasonic sensor, pressure sensor and controller, the entire process of magnesium oxide rods from feeding, positioning, clamping, simultaneous detection of strength and defects, to automatic sorting based on the results is automated, which improves detection efficiency and reduces labor costs and errors;

[0016] 2. In this utility model, by setting up a height-adjustable clamping mechanism and a rotatable detection station, the rotating column, conveyor belt and ultrasonic sensor cooperate with each other to realize the automatic rotation of the magnesium oxide rod in the clamping state, so that the fixed ultrasonic sensor can perform a 360-degree comprehensive scan of its circumference without dead angles, overcoming the limitations of single-point detection and improving the detection rate of internal defects and the accuracy of detection results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the left side structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of the testing mechanism of this utility model;

[0020] Figure 4 This is an exploded structural diagram of the current diversion component of this utility model.

[0021] In the diagram: 1. Support base; 2. Protective plate; 3. Conveyor belt; 4. Support frame; 5. Electric actuator; 6. Lifting plate; 7. Moving slot; 8. Threaded rod; 9. Moving block; 10. Clamping plate; 11. Rotating column; 12. Pressure sensor; 13. Drive motor; 14. Mounting slot; 15. Ultrasonic sensor; 16. Fixing plate; 17. Baffle; 18. L-shaped connecting rod; 19. Connecting block; 20. Servo motor; 21. Diverter plate; 22. Distribution box; 23. Controller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top", "bottom", "side", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0024] In one typical implementation of this application, please refer to Figures 1-4As shown, an automatic detection device for magnesium oxide rods includes: a support base 1, which is welded from high-strength steel plate and serves as an overall load-bearing and stable support. Two protective plates 2 are fixedly installed on the front and rear sides of its top surface by bolts. The protective plates 2 are made of wear-resistant alloy material and are used to prevent magnesium oxide rods from falling off the sides of the conveyor belt 3 during the conveying process, while also protecting the internal transmission structure. The two protective plates 2 are rotatably connected to the conveyor belt 3 by bearings. The conveyor belt 3 is made of high-temperature resistant rubber material with anti-slip texture on the surface and is used to carry and transport magnesium oxide rods. The conveyor belt 3 is equipped with an independent motor and is electrically connected to the controller 23, which controls the start, stop and speed adjustment. A support frame 4 is fixedly installed on the top surface of the two protective plates 2 by welding. The support frame 4 is a gantry structure made of stainless steel profiles and is used to install and fix the various components of the detection mechanism. A diversion component is set on the top surface of the protective plates 2 and is used to classify and divert qualified and unqualified magnesium oxide rods after detection.

[0025] The detection mechanism includes: an electric actuator 5, which is fixedly mounted on the bottom surface of the support frame 4 by bolts. The electric actuator 5 is a servo electric actuator, which has the characteristics of precise stroke and stable thrust. Its output end is fixedly mounted with a lifting plate 6 through a flange. The left side wall of the lifting plate 6 is milled with a moving groove 7, which is a rectangular through groove used to accommodate the threaded rod 8 and the moving block 9 and provide them with moving space. An infrared sensor is also embedded in the front side wall of the lifting plate 6. The infrared sensor is electrically connected to the controller 23 and is used to detect whether the magnesium oxide rod has been conveyed to the designated detection position.

[0026] The testing mechanism also includes: a threaded rod 8, which is rotatably connected to the inner wall of the moving groove 7 via a deep groove ball bearing. The inner ring of the bearing is interference-fitted with the threaded rod 8, and the outer ring is interference-fitted with the mounting hole on the inner wall of the moving groove 7, ensuring smooth rotation and accurate positioning of the threaded rod 8. The outer surface of the threaded rod 8 is machined with two sections of threads in opposite directions, with the same pitch. Moving blocks 9 are threadedly connected to the two sections of threads in opposite directions on the threaded rod 8. The moving blocks 9 are rectangular blocks with internal threads on their inner walls that match those of the threaded rod 8. The left side walls of the two moving blocks 9 are open. A clamping plate 10 is bolted and fixedly installed. The clamping plate 10 is made of wear-resistant cast iron and is used to install the rotating column 11. The rotating column 11 is rotatably connected to the adjacent surfaces of the two clamping plates 10 through a thrust bearing. The rotating column 11 is a cylindrical structure with a polished surface to reduce the friction when in contact with the magnesium oxide rod. A pressure sensor 12 is embedded and fixedly installed in each of the two rotating columns 11. The pressure sensor 12 is a miniature strain gauge pressure sensor and is electrically connected to the controller 23. It is used to detect the pressure value borne by the magnesium oxide rod during the clamping process in real time and feed it back to the controller 23.

[0027] The testing mechanism also includes: a drive motor 13, which is fixedly mounted on the front side wall of the lifting plate 6 by motor mount bolts. The drive motor 13 is a stepper motor, which has the advantages of controllable speed and precise positioning. Its output end is fixedly connected to the side wall of the threaded rod 8 through a coupling to ensure stable power transmission. The drive motor 13 is electrically connected to the controller 23 and is controlled by it to achieve forward and reverse rotation. The top surface of the support frame 4 is milled to have an installation groove 14. The installation groove 14 is a circular groove. An ultrasonic sensor 15 is fixedly installed in the installation groove 14 by a buckle. The ultrasonic sensor 15 is a high-frequency ultrasonic flaw detection sensor, which is electrically connected to the controller 23. It is used to detect whether there are defects such as cracks and pores inside the magnesium oxide rod and transmits the detection signal to the controller 23.

[0028] The diversion assembly includes: a fixed plate 16, which is bolted to the top surface of two protective plates 2. The fixed plate 16 is a rectangular steel plate and serves to connect and fix the various components of the diversion assembly. A baffle 17, made of elastic rubber, is welded to the bottom surface of the fixed plate 16 and its bottom surface is in close contact with the top surface of the conveyor belt 3. The baffle 17 is used to limit and guide the magnesium oxide rod, preventing it from deviating from the conveying path before detection. An L-shaped connecting rod 18, made of stainless steel, is bolted to the top surface of the fixed plate 16. The bottom surface of the L-shaped connecting rod 18, which is used for suspending and mounting the servo motor 20, is fixedly mounted with a connecting block 19 by welding. The connecting block 19 is a square steel block with a motor mounting cavity inside. The servo motor 20 is fixedly mounted in the connecting block 19 by bolts. The servo motor 20 is a high-precision servo motor and is electrically connected to the controller 23. Its output end is fixedly connected to the diverter plate 21 by a flat key. The diverter plate 21 is made of wear-resistant plastic material. Its bottom surface contacts the top surface of the conveyor belt 3 and is used to rotate under the drive of the servo motor 20 to change the conveying direction of the magnesium oxide rod and realize diversion.

[0029] A distribution box 22 is bolted to the left side wall of the support base 1. The distribution box 22 contains electrical components such as circuit breakers, contactors, and power modules to provide a stable power supply to the entire device, including the motor of the conveyor belt 3, electric push rod 5, drive motor 13, ultrasonic sensor 15, servo motor 20, controller 23, infrared sensor, etc., and to realize overload and short circuit protection functions. A controller 23 is bolted to the front side wall of the support base 1. The controller 23 is preferably a PLC programmable logic controller, which has a pre-set control program to receive signals from the infrared sensor, pressure sensor 12 and ultrasonic sensor 15, and to process the above signals to control the start-stop and operation logic of each actuator.

[0030] In use, the operator first connects the power supply of the entire device through the distribution box 22. After the controller 23 (PLC programmable logic controller) is initialized, it enters the standby state. The operator places the magnesium oxide rod to be tested evenly on the top left side of the conveyor belt 3, and then starts the detection program through the operation panel of the controller 23. At this time, the controller 23 sends a control signal to start the drive motor of the conveyor belt 3. The conveyor belt 3 starts to rotate clockwise, driving the magnesium oxide rod placed on its top surface to move to the right detection area. At the same time, the controller 23 controls the electric push rod 5 to start. The output shaft of the electric push rod 5 extends downward, driving the lifting plate 6 connected to the output end of the electric push rod 5 through the flange to move downward synchronously until the bottom surface of the lifting plate 6 makes slight contact with the top surface of the conveyor belt 3. The contact pressure can be preset by the controller 23 to avoid affecting the transmission of the conveyor belt 3 and to play a limiting role.

[0031] When the magnesium oxide rod is conveyed to the front wall of the lifting plate 6 via the conveyor belt 3, the infrared sensor pre-installed on the side wall of the lifting plate 6 detects that the magnesium oxide rod has arrived and immediately sends a signal to the controller 23. The controller 23 immediately controls the drive motor of the conveyor belt 3 to stop running and simultaneously controls the drive motor 13 to start. The output shaft of the drive motor 13 drives the threaded rod 8 connected to it to rotate in the bearing of the moving groove 7 through the coupling. Since the outer surface of the threaded rod 8 has two sections of threads with opposite directions of rotation, and the two moving blocks 9 are respectively threadedly connected to these two sections of threads, under the action of the rotation of the threaded rod 8, the two... The moving blocks 9 move closer to each other along the inner wall of the moving groove 7, causing the clamping plate 10 fixedly connected to the moving blocks 9 and the rotating column 11 on the clamping plate 10 to move synchronously until the two rotating columns 11 are in close contact with the outer surfaces of both ends of the magnesium oxide rod and apply clamping force to detect the compressive strength of the magnesium oxide rod. During this process, the pressure sensor 12 embedded in the rotating column 11 converts the pressure data borne by the magnesium oxide rod into an electrical signal in real time and transmits it to the controller 23. The controller 23 collects and analyzes the pressure data in real time to determine whether the compressive strength of the magnesium oxide rod meets the preset standard.

[0032] Meanwhile, the controller 23 activates the ultrasonic sensor 15 on the support frame 4. The ultrasonic sensor 15 emits high-frequency ultrasonic waves towards the magnesium oxide rod. After the ultrasonic waves penetrate the magnesium oxide rod, they are reflected back to the sensor. The sensor converts the reflected signal into an electrical signal and transmits it to the controller 23. The controller 23 analyzes parameters such as the propagation time and amplitude changes of the ultrasonic waves to determine whether there are defects such as cracks or pores inside the magnesium oxide rod. When the ultrasonic sensor 15 needs to perform a comprehensive inspection of the magnesium oxide rod, the controller 23 activates the drive motor of the conveyor belt 3 again. The conveyor belt 3 contacts the surface of the magnesium oxide rod through friction. Since the magnesium oxide rod is held by two rotating columns 11, under the transmission action of the conveyor belt 3, the magnesium oxide rod drives the two rotating columns 11 to rotate synchronously in the thrust bearing of the clamping plate 10. This allows the ultrasonic sensor 15 to perform a comprehensive and thorough inspection of the circumferential surface of the magnesium oxide rod and transmit the complete inspection data to the controller 23 in real time.

[0033] After the test is completed, the controller 23 performs a comprehensive analysis of the test data transmitted by the pressure sensor 12 and the ultrasonic sensor 15 to determine whether the magnesium oxide rod is qualified. If the test is qualified, the controller 23 controls the servo motor 20 to start. The output shaft of the servo motor 20 drives the diverter plate 21 to rotate clockwise to a preset angle, so that the qualified magnesium oxide rod continues to be conveyed to the right along the conveyor belt 3 and is guided into the qualified product collection area through the diverter plate 21. If the test is unqualified, the controller 23 controls the servo motor 20 to rotate in the opposite direction to another preset angle, so that the unqualified magnesium oxide rod is guided to the unqualified product collection area, realizing automatic diversion.

[0034] After the diversion is completed, the controller 23 controls the drive motor 13 to reverse, causing the threaded rod 8 to rotate in the opposite direction, so that the two moving blocks 9 move away from each other, and the two rotating columns 11 release the clamping of the magnesium oxide rod. At the same time, the controller controls the output axis of the electric push rod 5 to retract upward, causing the lifting plate 6 to rise to the initial position. Then the controller 23 controls the conveyor belt 3 to start again, conveying the next magnesium oxide rod to be tested into the testing area. This cycle is repeated to realize the continuous automatic testing of magnesium oxide rods.

[0035] Working principle:

[0036] In use, magnesium oxide rods are conveyed to the inspection station by conveyor belt 3. Then, electric actuator 5 drives lifting plate 6 to descend, while simultaneously driving motor 13 to rotate threaded rod 8, causing two rotating columns 11 equipped with pressure sensors 12 to move towards each other, clamping the rod to test its compressive strength. At the same time, ultrasonic sensor 15 activates to scan the rod for defects; for comprehensive inspection, conveyor belt 3 can slowly rotate again, driving the clamped rod to rotate, achieving a 360-degree scan. Finally, controller 23, based on sensor data, controls servo motor 20 to rotate diverter plate 21, automatically sorting qualified and unqualified products to different areas.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic detection device for magnesium oxide rods, comprising a support base (1), wherein two protective plates (2) are fixedly installed on the front and rear sides of the top surface of the support base (1), and a conveyor belt (3) is rotatably connected between the two protective plates (2), characterized in that: A support frame (4) is fixedly installed on the top surface of the two protective plates (2), and a detection mechanism is provided below the support frame (4); The diversion component is disposed on the top surface of the protective plate (2); The testing mechanism includes: an electric actuator (5), which is fixedly installed on the bottom surface of the support frame (4), and a lifting plate (6) is fixedly installed at the output end of the electric actuator (5). A moving groove (7) is provided on the left side wall of the lifting plate (6). The testing mechanism also includes: a threaded rod (8), which is rotatably connected to the inner wall of the moving groove (7). The outer surface of the threaded rod (8) is provided with two sections of threads with opposite directions of rotation. Each section of the threaded rod (8) with opposite directions of rotation is provided with a moving block (9). Each of the two moving blocks (9) has a clamping plate (10) fixedly installed on its left side wall. Each of the two clamping plates (10) has a rotating column (11) rotatably connected to its adjacent surface. Each of the two rotating columns (11) is provided with a pressure sensor (12). The testing mechanism also includes: a drive motor (13), which is fixedly installed on the front side wall of the lifting plate (6), the output end of the drive motor (13) is connected to the side wall of the threaded rod (8), and the top surface of the support frame (4) is provided with an installation groove (14), in which an ultrasonic sensor (15) is fixedly installed. The diversion assembly includes: a fixed plate (16), which is fixedly installed on the top surface of two protective plates (2), a baffle (17) is fixedly installed on the bottom surface of the fixed plate (16), the bottom surface of the baffle (17) is in contact with the top surface of the conveyor belt (3), an L-shaped connecting rod (18) is fixedly installed on the top surface of the fixed plate (16), a connecting block (19) is fixedly installed on the bottom surface of the L-shaped connecting rod (18), a servo motor (20) is fixedly installed in the connecting block (19), a diversion plate (21) is provided at the output end of the servo motor (20), and the bottom surface of the diversion plate (21) is in contact with the top surface of the conveyor belt (3).

2. The automatic detection device for magnesium oxide rods according to claim 1, characterized in that: A distribution box (22) is fixedly installed on the left side wall of the support base (1), and a controller (23) is fixedly installed on the front side wall of the support base (1).

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