An on-line detection mechanism for detecting dark cracks of magnetic tiles

Abstract

The utility model discloses a kind of online detection mechanism for detecting magnetic tile dark cracking, including feed conveyor belt and ultrasonic detector, the discharge end side of feed conveyor belt is equipped with detection conveyor belt, the middle position of detection conveyor belt is equipped with medium groove, medium groove is equipped with medium liquid inside, the detection probe of ultrasonic detector is installed medium groove, and detection probe is immersed in medium liquid. The present disclosure transports the to-be-tested magnetic tile backward through the feed conveyor belt, transports the to-be-tested magnetic tile to the lower side of the detection probe through the detection conveyor belt, realizes the accurate detection of the magnetic tile dark cracking by the detection probe using the ultrasonic flaw detection principle, ensures that even a tiny dark crack can be detected, and avoids the risk of missing detection by detecting through a certain pressure in the prior art.

Description

Technical Field

[0001] This disclosure belongs to the field of magnetic tile hidden crack detection technology, specifically relating to an online detection mechanism for detecting magnetic tile hidden cracks. Background Technology

[0002] During the production process of magnetic products, there is a certain probability of cracking. Therefore, after the magnetic products are sintered and ground, they need to be visually inspected. Some external cracks are easy to identify with the naked eye, but internal cracks cannot be identified with the naked eye, so testing agencies are needed.

[0003] Chinese patent application number 201620938113.0 discloses a detection device for hidden cracks in magnetic tiles, including a frame, a first slide rail, a second slide rail, a vertical plate, and a rotating shaft motor. A hollow structure exists between the first and second slide rails. The rotating shaft motor is connected to a brush roller, which drives a brush located at the inlet end. A lever is located behind the brush, and the lever's bend connects to a connecting rod. An upper pressure wheel is located at the lower end of the lever, and a lower pressure wheel is located below it. The lower pressure wheel is a power wheel. The upper and lower pressure wheels are located within the hollow structure, and the space between them is for the magnetic tile to pass through. The upper end of the lever is connected to a cylinder. An air source is connected to a digital pressure gauge and a solenoid valve. The solenoid valve is connected to the cylinder. A controller is connected to the digital pressure gauge, the solenoid valve, and the rotating shaft motor. This invention features a simple structure, low cost, low production cost, low labor intensity, good product quality, and high production efficiency.

[0004] Chinese Patent Application No. 202322267687.2 discloses a detection device for hidden crack defects in magnetic tiles. The device includes a mounting base, on which are mounted a feeding mechanism, a detection mechanism, a clamping mechanism, a discharging mechanism, and a control system. The clamping mechanism is located within the detection mechanism, which includes a fixed plate at its upper end. A cylinder is mounted on the fixed plate, and a detection pressure head is connected to a piston rod inside the cylinder, penetrating downwards through the fixed plate. The cylinder is connected to an air pump via an air pipe, and the air pump is mounted on a side support plate. A pressure regulating valve is located between the air pipe and the air pump, and a regulating valve is connected between the cylinder and the air pipe. A detection sensor is mounted on the feeding mechanism, and the feeding mechanism, discharging mechanism, and detection sensor are all connected to the control system. This utility model's detection device for hidden crack defects in magnetic tiles has a simple structure, is convenient and quick to use, has a wide range of applications, high detection speed, and high accuracy.

[0005] Most existing testing methods involve applying pressure to the magnetic product under test to cause damage. However, some magnetic products have slight cracks, and if the testing pressure is insufficient to destroy them, there is a risk of missed detection.

[0006] Therefore, there is an urgent need for an online inspection mechanism for detecting hidden cracks in magnetic tiles. This mechanism should utilize the principle of ultrasonic flaw detection to achieve accurate detection of hidden cracks, even tiny micro-cracks, thus avoiding missed detections. Utility Model Content

[0007] The purpose of this disclosure is to provide an online detection mechanism for detecting hidden cracks in magnetic tiles, thereby solving the problems mentioned in the background art. The online detection mechanism for detecting hidden cracks in magnetic tiles provided by this disclosure utilizes the principle of ultrasonic flaw detection to achieve accurate detection of hidden cracks, accurately identifying even minute microcracks and avoiding missed detections.

[0008] To achieve the above objectives, this disclosure provides the following technical solution: an online detection mechanism for detecting dark cracks in magnetic tiles, comprising a feeding conveyor belt and an ultrasonic detector, wherein a detection conveyor belt is provided on the discharge end side of the feeding conveyor belt, a medium tank is provided in the middle of the detection conveyor belt, the inside of the medium tank is filled with medium liquid, and the detection probe of the ultrasonic detector is installed on the medium tank and immersed in the medium liquid.

[0009] In order to allow the magnetic tile to be tested to be immersed in the medium liquid, the conveyor belt of the test belt is further provided with a recess in the medium tank corresponding to the conveyor belt.

[0010] In order to press the conveyor surface of the inspection conveyor belt downward to form a concave portion, the inspection conveyor belt further includes two support rollers and four pressure rollers. The two support rollers are located below the upper bend of the concave portion, and the four pressure rollers are located above the lower bend of the concave portion. The four pressure rollers are symmetrically mounted on the side wall of the medium tank in pairs.

[0011] In order to adsorb the magnetic tile to be tested onto the testing conveyor belt and avoid the resistance of the medium liquid affecting the conveyor belt's transport of the magnetic tile, a magnetic plate is further provided below the recess.

[0012] Furthermore, in this disclosure, the medium is an aqueous coupling agent.

[0013] To guide the conveying of the magnetic tiles to be tested, symmetrical baffles are further provided above the feed conveyor belt.

[0014] To facilitate the transition between the feeding conveyor belt and the inspection conveyor belt, a connecting plate is further provided between them.

[0015] To enable the positioning of the magnetic tiles and facilitate the identification of those with hidden cracks, an encoder is installed on the drive shaft of the detection conveyor belt, and a photoelectric sensor is installed on the feed end of the detection conveyor belt. The photoelectric sensor and the encoder are respectively connected to the PLC controller signal.

[0016] To achieve automatic unloading of defective products, a defective product receiving box is further provided on one side of the discharge end of the inspection conveyor belt. An air nozzle corresponding to the defective product receiving box is provided on the other side of the discharge end of the inspection conveyor belt.

[0017] Compared with the prior art, the beneficial effects of this disclosure are:

[0018] 1. This invention uses a feeding conveyor belt to transport the magnetic tile to be tested backward, and a testing conveyor belt to transport the magnetic tile to be tested to the area below the testing probe. The testing probe uses the ultrasonic flaw detection principle to achieve accurate detection of dark cracks in the magnetic tile, ensuring that even tiny dark cracks can be detected, thus avoiding the potential for missed detections in existing technologies that rely on pressure for testing.

[0019] 2. The detection surface of the detection probe disclosed herein has the same shape as the magnetic tile to be tested, ensuring that it can detect in all directions and avoiding missed detections.

[0020] 3. A magnetic plate is provided below the recess in this invention. The magnetic plate attracts the magnetic tile to be tested onto the detection conveyor belt, thus avoiding the resistance of the medium liquid from affecting the conveying of the magnetic tile by the detection conveyor belt.

[0021] 4. The present invention detects that the drive shaft of the conveyor belt is equipped with an encoder and the feed end of the conveyor belt is equipped with a photoelectric sensor. The photoelectric sensor and the encoder are respectively connected to the PLC controller signal to realize the positioning of the magnetic tile, thereby making it easier to identify magnetic tiles with hidden cracks.

[0022] 5. The present invention provides a defective product receiving box on one side of the discharge end of the conveyor belt and an air nozzle corresponding to the defective product receiving box on the other side of the discharge end of the conveyor belt. By blowing air through the air nozzle, the magnetic tiles with hidden cracks are blown into the defective product receiving box, thereby realizing the automatic unloading of defective products. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure disclosed herein.

[0024] Figure 2 This is a schematic diagram of the structure of the conveyor belt tested in this disclosure.

[0025] Figure 3 This is a schematic diagram of the structure of the detection probe disclosed in this paper.

[0026] In the diagram: 1. Feed conveyor belt; 2. Ultrasonic detector; 3. Detection probe; 4. Air nozzle; 5. Detection conveyor belt; 51. Support roller; 52. Pressure roller; 53. Magnetic plate; 6. Defective product receiving box; 7. Medium tank; 8. Through-beam photoelectric sensor; 9. Baffle. Detailed Implementation

[0027] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0028] In the description of this disclosure, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0029] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this disclosure, the terms "upper," "lower," "right," "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation. They 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 disclosure. Furthermore, the terms "first" and "second" are used only for descriptive distinction and have no special meaning.

[0031] Example 1

[0032] Please see Figure 1 , Figure 2 and Figure 3This embodiment provides the following technical solution: an online detection mechanism for detecting dark cracks in magnetic tiles, including a feeding conveyor belt 1 and an ultrasonic detector 2. A detection conveyor belt 5 is provided on the discharge end side of the feeding conveyor belt 1. A medium tank 7 is provided in the middle of the detection conveyor belt 5. The medium tank 7 is filled with a medium liquid. The detection probe 3 of the ultrasonic detector 2 is installed on the medium tank 7 and is immersed in the medium liquid. The medium liquid is a water-based coupling agent. The detection surface of the detection probe 3 is the same shape as the magnetic tile to be tested, ensuring that it can detect in all directions and avoiding missed detections. The drive motor of the feeding conveyor belt 1, the drive motor of the detection conveyor belt 5, and the ultrasonic detector 2 are respectively connected to the PLC controller signal.

[0033] By adopting the above technical solution, this disclosure uses a feeding conveyor belt 1 to transport the magnetic tile to be tested backward, and a detection conveyor belt 5 to transport the magnetic tile to be tested to the area below the detection probe 3. The detection probe 3 utilizes the principle of ultrasonic flaw detection to achieve accurate detection of hidden cracks in the magnetic tile, ensuring that even tiny hidden cracks can be detected, avoiding the potential for missed detections caused by pressure-based detection in existing technologies. The detection surface of the detection probe 3 in this disclosure has the same shape as the magnetic tile to be tested, ensuring detection from all directions and avoiding missed detections.

[0034] Example 2

[0035] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides the following technical solution: an online detection mechanism for detecting dark cracks in magnetic tiles, including a feeding conveyor belt 1 and an ultrasonic detector 2. A detection conveyor belt 5 is provided on the discharge end side of the feeding conveyor belt 1. A medium tank 7 is provided in the middle of the detection conveyor belt 5. The medium tank 7 is filled with a medium liquid. The detection probe 3 of the ultrasonic detector 2 is installed on the medium tank 7 and is immersed in the medium liquid. The medium liquid is a water-based coupling agent. The detection surface of the detection probe 3 is the same shape as the magnetic tile to be tested, ensuring that it can detect in all directions and avoiding missed detections. The drive motor of the feeding conveyor belt 1, the drive motor of the detection conveyor belt 5, and the ultrasonic detector 2 are respectively connected to the PLC controller signal.

[0036] For details, please refer to Figure 2 The conveyor belt 5 has a recess in the medium trough 7 corresponding to the conveying surface.

[0037] By adopting the above technical solution, the magnetic tile to be tested can be immersed in the medium liquid.

[0038] Example 3

[0039] Please see Figure 1 , Figure 2 and Figure 3This embodiment provides the following technical solution: an online detection mechanism for detecting dark cracks in magnetic tiles, including a feeding conveyor belt 1 and an ultrasonic detector 2. A detection conveyor belt 5 is provided on the discharge end side of the feeding conveyor belt 1. A medium tank 7 is provided in the middle of the detection conveyor belt 5. The medium tank 7 is filled with a medium liquid. The detection probe 3 of the ultrasonic detector 2 is installed on the medium tank 7 and is immersed in the medium liquid. The medium liquid is a water-based coupling agent. The detection surface of the detection probe 3 is the same shape as the magnetic tile to be tested, ensuring that it can detect in all directions and avoiding missed detections. The drive motor of the feeding conveyor belt 1, the drive motor of the detection conveyor belt 5, and the ultrasonic detector 2 are respectively connected to the PLC controller signal.

[0040] For details, please refer to Figure 2 The inspection conveyor belt 5 also includes two support rollers 51 and four pressure rollers 52. The two support rollers 51 are located below the upper bend of the concave portion, and the four pressure rollers 52 are located above the lower bend of the concave portion. The four pressure rollers 52 are symmetrically installed in pairs on the side wall of the medium tank 7.

[0041] By adopting the above technical solution, the conveying surface of the detection conveyor belt 5 is pressed downward to form a concave part.

[0042] Example 4

[0043] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides the following technical solution: an online detection mechanism for detecting dark cracks in magnetic tiles, including a feeding conveyor belt 1 and an ultrasonic detector 2. A detection conveyor belt 5 is provided on the discharge end side of the feeding conveyor belt 1. A medium tank 7 is provided in the middle of the detection conveyor belt 5. The medium tank 7 is filled with a medium liquid. The detection probe 3 of the ultrasonic detector 2 is installed on the medium tank 7 and is immersed in the medium liquid. The medium liquid is a water-based coupling agent. The detection surface of the detection probe 3 is the same shape as the magnetic tile to be tested, ensuring that it can detect in all directions and avoiding missed detections. The drive motor of the feeding conveyor belt 1, the drive motor of the detection conveyor belt 5, and the ultrasonic detector 2 are respectively connected to the PLC controller signal.

[0044] For details, please refer to Figure 2 A magnetic plate 53 is provided below the recess.

[0045] By adopting the above technical solution, the magnetic tile to be tested is adsorbed onto the detection conveyor belt 5 by the magnetic plate 53, so as to avoid the resistance of the medium liquid from affecting the conveying of the magnetic tile by the detection conveyor belt 5.

[0046] Example 5

[0047] Please see Figure 1 , Figure 2 and Figure 3This embodiment provides the following technical solution: an online detection mechanism for detecting dark cracks in magnetic tiles, including a feeding conveyor belt 1 and an ultrasonic detector 2. A detection conveyor belt 5 is provided on the discharge end side of the feeding conveyor belt 1. A medium tank 7 is provided in the middle of the detection conveyor belt 5. The medium tank 7 is filled with a medium liquid. The detection probe 3 of the ultrasonic detector 2 is installed on the medium tank 7 and is immersed in the medium liquid. The medium liquid is a water-based coupling agent. The detection surface of the detection probe 3 is the same shape as the magnetic tile to be tested, ensuring that it can detect in all directions and avoiding missed detections. The drive motor of the feeding conveyor belt 1, the drive motor of the detection conveyor belt 5, and the ultrasonic detector 2 are respectively connected to the PLC controller signal.

[0048] For details, please refer to Figure 1 A symmetrical baffle 9 is provided above the feed conveyor belt 1.

[0049] The above technical solution is used to guide the transport of the magnetic tiles to be tested.

[0050] Example 6

[0051] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides the following technical solution: an online detection mechanism for detecting dark cracks in magnetic tiles, including a feeding conveyor belt 1 and an ultrasonic detector 2. A detection conveyor belt 5 is provided on the discharge end side of the feeding conveyor belt 1. A medium tank 7 is provided in the middle of the detection conveyor belt 5. The medium tank 7 is filled with a medium liquid. The detection probe 3 of the ultrasonic detector 2 is installed on the medium tank 7 and is immersed in the medium liquid. The medium liquid is a water-based coupling agent. The detection surface of the detection probe 3 is the same shape as the magnetic tile to be tested, ensuring that it can detect in all directions and avoiding missed detections. The drive motor of the feeding conveyor belt 1, the drive motor of the detection conveyor belt 5, and the ultrasonic detector 2 are respectively connected to the PLC controller signal.

[0052] Specifically, a connecting plate is provided between the feeding conveyor belt 1 and the inspection conveyor belt 5.

[0053] By adopting the above technical solution, a transitional connection between the feeding conveyor belt 1 and the inspection conveyor belt 5 is achieved.

[0054] Example 7

[0055] Please see Figure 1 , Figure 2 and Figure 3This embodiment provides the following technical solution: an online detection mechanism for detecting dark cracks in magnetic tiles, including a feeding conveyor belt 1 and an ultrasonic detector 2. A detection conveyor belt 5 is provided on the discharge end side of the feeding conveyor belt 1. A medium tank 7 is provided in the middle of the detection conveyor belt 5. The medium tank 7 is filled with a medium liquid. The detection probe 3 of the ultrasonic detector 2 is installed on the medium tank 7 and is immersed in the medium liquid. The medium liquid is a water-based coupling agent. The detection surface of the detection probe 3 is the same shape as the magnetic tile to be tested, ensuring that it can detect in all directions and avoiding missed detections. The drive motor of the feeding conveyor belt 1, the drive motor of the detection conveyor belt 5, and the ultrasonic detector 2 are respectively connected to the PLC controller signal.

[0056] Specifically, an encoder is installed on the drive shaft of the detection conveyor belt 5, and a photoelectric sensor 8 is installed on the feed end of the detection conveyor belt 5. The photoelectric sensor 8 and the encoder are respectively connected to the PLC controller signal.

[0057] By adopting the above technical solution, the magnetic tile can be located, making it easier to identify magnetic tiles with hidden cracks.

[0058] Example 8

[0059] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides the following technical solution: an online detection mechanism for detecting dark cracks in magnetic tiles, including a feeding conveyor belt 1 and an ultrasonic detector 2. A detection conveyor belt 5 is provided on the discharge end side of the feeding conveyor belt 1. A medium tank 7 is provided in the middle of the detection conveyor belt 5. The medium tank 7 is filled with a medium liquid. The detection probe 3 of the ultrasonic detector 2 is installed on the medium tank 7 and is immersed in the medium liquid. The medium liquid is a water-based coupling agent. The detection surface of the detection probe 3 is the same shape as the magnetic tile to be tested, ensuring that it can detect in all directions and avoiding missed detections. The drive motor of the feeding conveyor belt 1, the drive motor of the detection conveyor belt 5, and the ultrasonic detector 2 are respectively connected to the PLC controller signal.

[0060] Specifically, a defective product receiving box 6 is provided on one side of the discharge end of the inspection conveyor belt 5, and an air nozzle 4 corresponding to the defective product receiving box 6 is provided on the other side of the discharge end of the inspection conveyor belt 5. The air nozzle 4 is connected to an air source, and a solenoid valve is connected to the connecting pipe between the air nozzle 4 and the air source. The solenoid valve is connected to the PLC controller signal.

[0061] By adopting the above technical solution, the magnetic tiles with hidden cracks are blown into the defective product receiving box 6 by the air nozzle 4, thereby realizing the automatic unloading of defective products.

[0062] In summary, this disclosure uses a feeding conveyor belt 1 to transport the magnetic tile to be tested backward, and a detection conveyor belt 5 to transport the magnetic tile to be tested to the area below the detection probe 3. The detection probe 3 utilizes the principle of ultrasonic flaw detection to achieve accurate detection of hidden cracks in the magnetic tile, ensuring that even tiny hidden cracks can be detected, avoiding the potential for missed detections in existing technologies that rely on pressure testing. The detection surface of the detection probe 3 in this disclosure has the same shape as the magnetic tile to be tested, ensuring detection from all directions and preventing missed detections. A magnetic plate 53 is provided below the recessed portion of this disclosure, which adsorbs the magnetic tile to be tested onto the detection conveyor belt 5, preventing the resistance of the medium liquid from affecting the conveying of the magnetic tile by the detection conveyor belt 5. An encoder is installed on the drive shaft of the detection conveyor belt 5, and a photoelectric sensor 8 is installed on the feeding end of the detection conveyor belt 5. The photoelectric sensor 8 and the encoder are respectively connected to the PLC controller to achieve the positioning of the magnetic tile, thereby facilitating the identification of magnetic tiles with hidden cracks. The present invention provides a defective product receiving box 6 on one side of the discharge end of the inspection conveyor belt 5, and an air nozzle 4 corresponding to the defective product receiving box 6 on the other side of the discharge end of the inspection conveyor belt 5. By blowing air through the air nozzle 4, the magnetic tiles with hidden cracks are blown into the defective product receiving box 6, thereby realizing the automatic unloading of defective products.

[0063] Although embodiments of the present disclosure have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online detection mechanism for detecting hidden cracks in magnetic tiles, characterized in that: It includes a feeding conveyor belt and an ultrasonic detector. The feeding conveyor belt has a detection conveyor belt at the discharge end. The detection conveyor belt has a medium tank in the middle. The medium tank is filled with medium liquid. The detection probe of the ultrasonic detector is installed on the medium tank and is immersed in the medium liquid.

2. The online detection mechanism for detecting dark cracks in magnetic tiles according to claim 1, characterized in that: The conveyor belt of the test is provided with a recess in the medium trough corresponding to the conveying surface.

3. The online detection mechanism for detecting dark cracks in magnetic tiles according to claim 2, characterized in that: The detection conveyor belt also includes two support rollers and four pressure rollers. The two support rollers are located below the upper bend of the concave section, and the four pressure rollers are located above the lower bend of the concave section. The four pressure rollers are symmetrically installed in pairs on the side wall of the medium tank.

4. The online detection mechanism for detecting dark cracks in magnetic tiles according to claim 2, characterized in that: A magnetic plate is provided below the recess.

5. An online detection mechanism for detecting dark cracks in magnetic tiles according to claim 1, characterized in that: The medium is an aqueous coupling agent.

6. The online detection mechanism for detecting hidden cracks in magnetic tiles according to claim 1, characterized in that: The feed conveyor belt is equipped with symmetrical baffles above it.

7. The online detection mechanism for detecting hidden cracks in magnetic tiles according to claim 1, characterized in that: A connecting plate is provided between the feeding conveyor belt and the inspection conveyor belt.

8. An online detection mechanism for detecting hidden cracks in magnetic tiles according to claim 1, characterized in that: An encoder is installed on the drive shaft of the detection conveyor belt, and a photoelectric sensor is installed on the feed end of the detection conveyor belt. The photoelectric sensor and the encoder are respectively connected to the PLC controller signal.

9. An online detection mechanism for detecting dark cracks in magnetic tiles according to claim 1, characterized in that: A defective product receiving box is provided on one side of the discharge end of the inspection conveyor belt.

10. An online detection mechanism for detecting dark cracks in magnetic tiles according to claim 9, characterized in that: The other side of the discharge end of the inspection conveyor belt is equipped with an air nozzle corresponding to the defective product receiving box.

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