A flaw detection device and method for producing porcelain insulators

Abstract

The present invention discloses a flaw detection device and method for porcelain insulator production, which relates to the technical field of detection, and includes a bottom cylinder, the bottom cylinder is rotatably connected to a rotating module, the insulator is placed on the top of the rotating module, the rotating module is fixedly connected to a constant heating module for heating the insulator, the bottom cylinder is fixedly connected to a support frame, the support frame is slidably connected to a slide, the slide is provided with a mounting plate, and the mounting plate is fixedly installed with an infrared thermal imaging acquisition module. When the present invention drives the insulator to rotate through the rotating module to perform circular scanning flaw detection, the wedge surface intermittently cooperates with the first clamping rod to automatically realize the step-by-step descent of the infrared thermal imaging acquisition module to realize layered scanning of the insulator, ensuring that the surface details of each layer can be fully detected, especially for complex and uneven insulators, the layered scanning can reduce the detection blind spots caused by viewing angle or distance.

Description

Technical Field

[0001] The invention relates to the technical field of detection, and in particular to a flaw detection device and method for producing porcelain insulators. Background Art

[0002] Porcelain insulators play the role of isolating live parts from grounded parts, and their performance directly affects the safe operation of the power grid. During the production process, porcelain insulators may have defects or damage inside and on the surface, which may affect the electrical performance and mechanical strength of the insulators. In order to ensure product quality and prevent unqualified products from entering the market and causing safety hazards, porcelain insulators need to be inspected during production.

[0003] At present, porcelain insulator inspection usually uses handheld infrared thermal imagers for scanning. The infrared thermal imager detects the surface temperature distribution of porcelain insulators and enhances the display of defective areas of large-tonnage insulator porcelain heads to find areas where defects may exist. Although this method can detect defects on the surface of insulators, when performing infrared thermal wave inspection, due to the large surface area and uneven surface structure of large-tonnage insulators, especially when performing module acquisition on insulators with complex structures, if a large area is collected at one time, it is very easy to cause detection blind areas, thereby affecting the accuracy and completeness of the detection.

[0004] Based on the above situation, the present invention proposes a flaw detection device and method for producing porcelain insulators. Summary of the invention

[0005] In order to overcome the disadvantage of blind areas in a large one-time scan, the present invention provides a flaw detection device and method for porcelain insulator production.

[0006] A flaw detection device for porcelain insulator production, comprising a bottom cylinder, the bottom cylinder is rotatably connected to a rotating module, the insulator is placed on the top of the rotating module, the bottom cylinder is fixedly connected to a motor, the bottom cylinder is rotatably connected to a rotating rod, the motor is used to drive the rotating rod to rotate, the rotating rod is fixedly connected to the rotating module, the rotating module is fixedly connected to a constant heating module for heating the insulator, the bottom cylinder is fixedly connected to a supporting frame, the supporting frame is slidably connected to a slide, the slide is provided with a mounting plate, the mounting plate is fixedly installed with an infrared thermal imaging acquisition module, the output shaft of the motor is fixedly connected to the rotating frame, the bottom cylinder is slidably connected to a first clamping rod, the slide is opened The first clamping grooves are distributed at equal intervals in the longitudinal direction, the first clamping rod is limitedly matched with one of the first clamping grooves, a first spring is fixedly connected between the first clamping rod and the support frame, an arc block is fixedly connected to one end of the first clamping rod close to the motor, a pressure frame is slidably connected in the bottom cylinder, the pressure frame is extruded and matched with the arc block, the rotating rod is threadedly connected to the pressure frame through a thread groove, the rotating rod has a rotating groove, the rotating groove is located at the upper end of the thread groove, one end of the rotating frame is set as a wedge-shaped surface, and when the wedge surface rotates, it is extruded and matched with the end face of the first clamping rod close to the motor, a second spring is fixedly connected between the rotating rod and the pressure frame, and the rotating frame is slidably connected to the clamping frame.

[0007] Furthermore, it also includes a Y-shaped block, which is fixedly connected to one end of the rotating rod close to the bracket, and the bracket is used to rotate and drive the Y-shaped block to rotate. An electromagnet is fixedly connected to one side of the rotating rack, and a magnetic block is fixedly connected to the side of the bracket close to the electromagnet. The electromagnet and the magnetic block cooperate through magnetic force, and a tension spring is fixedly connected between the side of the bracket away from the electromagnet and the rotating rack, and the first clamping rod is provided with a control component for controlling the power on and off of the electromagnet.

[0008] Furthermore, the control member is configured as a contact switch, which is fixedly connected to one end of the first clamping rod away from the slide, and the wedge-shaped surface is squeezed and matched with the contact switch when rotating, and the contact switch is electrically connected to the electromagnet through the control module.

[0009] Furthermore, when power is turned on, the electromagnet and the magnetic block are magnetically attracted to each other.

[0010] Furthermore, the slide bracket is slidably connected to the mounting plate.

[0011] Furthermore, it also includes a guide frame for guiding the mounting plate, and the guide frame is detachably mounted on a side of the support frame close to the slide frame.

[0012] Furthermore, the guide frame is provided with guide grooves, and the mounting plate is rotatably connected with rollers symmetrically distributed along the mounting plate, and the rollers are limitedly matched with adjacent guide grooves.

[0013] Furthermore, it also includes a second clamping rod for clamping the slide for resetting upward, the second clamping rod is slidably connected to the bottom tube, a third spring is fixedly connected between the second clamping rod and the support frame, a second clamping groove is opened at the lower part of one side of the slide close to the second clamping rod, and the second clamping groove cooperates with the second clamping rod to limit the position.

[0014] Furthermore, the end surface of the second clamping rod away from the third spring is arranged as an inclined surface, and the second clamping rod is pressed and matched with the pressing frame through the inclined surface.

[0015] A flaw detection method for porcelain insulator production comprises the following steps:

[0016] S1, placing the insulator on top of the rotating module, and inserting the constant heating module into the insulator;

[0017] S2, pulling the slide upwards so that the first card slot at the bottom moves upwards to the height of the first card rod;

[0018] S3, starting the motor and performing circumferential layered flaw detection on the insulator;

[0019] S4. After completing the layered flaw detection of the insulator from top to bottom, turn off the motor.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. When the present invention drives the insulator to rotate through the rotating module to perform circular scanning flaw detection, the wedge surface intermittently cooperates with the first clamping rod to automatically realize the step-by-step lowering of the infrared thermal imaging acquisition module to achieve layered scanning of the insulator, ensuring that the surface details of each layer can be fully detected, especially for complex and uneven insulators, the layered scanning can reduce the detection blind spots caused by viewing angle or distance.

[0022] 2. Each time the insulator descends, the present invention intermittently contacts the contact switch through the wedge surface to control the intermittent on and off of the electromagnet, so that the output shaft of the motor drives the rotating frame to intermittently idle for a short time. In this way, the rotating rod is paused, thereby pausing the rotating module, and then pausing the infrared thermal imaging acquisition module, thereby solving the problem that when the infrared thermal imaging acquisition module descends, there is a local blank area that cannot be inspected.

[0023] 3. The present invention uses the cooperation of the guide groove and the roller to allow the mounting plate to automatically move left and right, thereby automatically adjusting the distance between the infrared thermal imaging acquisition module and the insulator, so that no matter at which level, the infrared thermal imaging acquisition module is at the most suitable detection distance, reducing the detection blind spot caused by the increase in distance.

[0024] 4. When the slide is pulled upward, the third spring is reset so that the second latching rod is locked in the second latching groove. In this way, the slide can be automatically locked when it is reset upward. There is no need to hold the slide all the time, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the rotating module, motor, rotating rod and other components of the present invention.

[0027] Figure 3 This is a three-dimensional structure separation diagram of the components such as the slide, the mounting plate and the first clamping rod of the present invention.

[0028] Figure 4 It is a three-dimensional structural schematic diagram of the rotating rod, rotating frame, clamping frame and other components of the present invention.

[0029] Figure 5 It is a three-dimensional structural schematic diagram of the components such as the card frame, Y-shaped block and rotating frame of the present invention.

[0030] Figure 6 It is a three-dimensional structural schematic diagram of the electromagnet, magnetic block, tension spring and other components of the present invention.

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the support frame, guide frame, roller and other components of the present invention.

[0032] Figure 8 It is a schematic diagram of the three-dimensional structure of the mounting plate, guide frame and roller of the present invention.

[0033] Fig. 9 It is a three-dimensional structural schematic diagram of the components such as the pressing frame, the second clamping rod and the third spring of the present invention.

[0034] Explanation of the accompanying drawings: 1_bottom cylinder, 101_insulator, 2_rotation module, 3_motor, 4_rotating rod, 5_constant heating module, 6_support frame, 7_slide, 8_mounting plate, 9_infrared thermal imaging acquisition module, 10_rotating frame, 11_first clamping rod, 111_first clamping groove, 12_first spring, 13_arc block, 14_pressing frame, 141_rotating groove, 15_second spring, 16_cage, 161_Y-shaped block, 162_wedge surface, 17_electromagnet, 171_contact switch, 18_magnetic block, 19_tension spring, 20_guide frame, 21_roller, 22_second clamping rod, 222_second clamping groove, 23_third spring. DETAILED DESCRIPTION

[0035] The present invention will now be described more fully below with reference to the accompanying drawings, in which currently preferred embodiments of the present invention are shown. However, the present invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and these embodiments fully convey the scope of the present invention to the skilled person.

[0036] Embodiment 1: A flaw detection device for porcelain insulator production, combined with the attached Figure 1 To Attachment Figure 3, including a bottom cylinder 1, a rotating module 2 is rotatably connected to the top of the bottom cylinder 1, an insulator 101 is placed on the top of the rotating module 2, a motor 3 is fixedly connected to the lower side of the bottom cylinder 1, a rotating rod 4 is rotatably connected to the inside of the bottom cylinder 1, the motor 3 is used to drive the rotating rod 4 to rotate, the rotating rod 4 is fixedly connected to the rotating module 2, a constant heating module 5 for heating the insulator 101 is fixedly connected to the top middle of the rotating module 2, when the insulator 101 is placed on the rotating module 2, the constant heating module 5 is located inside the insulator 101, a support frame 6 is fixedly connected to the upper left part of the bottom cylinder 1, a slide frame 7 is slidably connected to the left side of the support frame 6 along the up and down directions, a mounting plate 8 is arranged on the top of the slide frame 7, an infrared thermal imaging acquisition module 9 for flaw detection of the insulator 101 is fixedly installed on the top of the mounting plate 8, the output shaft of the motor 3 is fixedly connected to a rotating frame 10, the shape of the rotating frame 10 is set as a cross, and the left part of the bottom cylinder 1 is close to the support frame 6 A first clamping rod 11 is slidably connected to one side of the slide 7 along the left and right directions, and three first clamping grooves 111 distributed at equal intervals in the longitudinal direction are opened on the left side of the slide 7. The left part of the first clamping rod 11 is limitedly matched with one of the first clamping grooves 111, and a first spring 12 is fixedly connected between the first clamping rod 11 and the support frame 6. The right end of the first clamping rod 11 is fixedly connected with an arc block 13, and a pressing frame 14 is slidably connected to the bottom tube 1 along the up and down directions. The pressing frame 14 is composed of an inner ring, an outer ring and two connecting rods connecting the inner ring and the outer ring. The outer ring end face of the pressing frame 14 is squeezed and matched with the arc block 13, and the rotating rod 4 is threadedly connected to the pressing frame 14 through a thread groove. A rotating groove 141 is opened on the side of the rotating rod 4 close to the thread groove, and the rotating groove 141 is located at the upper end of the thread groove. The left end of the rotating frame 10 is set to a wedge-shaped surface 162, which is squeezed and matched with the right end face of the first clamping rod 11 when rotating, and a second spring 15 is fixedly connected between the rotating rod 4 and the inner ring of the pressing frame 14.

[0037] First, place the insulator 101 on the top of the rotating module 2, and insert the constant heating module 5 into the insulator 101. Initially, the pressing frame 14 presses the arc block 13, so that the first clamping rod 11 is in an unlocked state, the slide 7 is in a state that can be pulled, and the first spring 12 is in a compressed state. Then, pull the slide 7 upward to move the first clamping groove 111 at the bottom upward to the height of the first clamping rod 11.

[0038] Next, the motor 3 and the constant heating module 5 are started, the motor 3 drives the rotating rod 4 to rotate, and the rotating rod 4 drives the pressing frame 14 to move upward into the rotating groove 141 through the threaded groove, the second spring 15 is compressed, and the pressing frame 14 moves upward to separate from the arc block 13. At this time, the first spring 12 is reset to drive the first clamping rod 11 to move rightward and automatically clamp the first clamping groove 111 at the bottom of the slide 7, so that the slide 7 is locked, and the slide 7 can be released immediately;

[0039] The rotation of the rotating rod 4 will also drive the rotating module 2 and the rotating frame 10 to rotate. The rotating module 2 drives the insulator 101 to rotate, so that the infrared thermal image acquisition module 9 performs a circular scanning flaw detection on the uppermost surface of the insulator 101. During the flaw detection, the constant heating module 5 performs constant heating on the insulator 101. When the wedge-shaped surface 162 of the rotating frame 10 rotates one circle until it contacts the right end surface of the first clamping rod 11, the rotating frame 10 squeezes the first clamping rod 11 to slide to the left through the wedge-shaped surface 162, so that the first clamping rod 11 releases the slide 7. At this time, under the action of gravity, the slide 7 , the mounting plate 8 and the infrared thermal imaging acquisition module 9 move downward as a whole, and then the wedge surface 162 rotates to disengage from the right end surface of the first clamping rod 11. When the second first clamping groove 111 counting from the top of the slide 7 drops to the height of the first clamping rod 11, the first clamping rod 11 slides to the right under the action of the first spring 12 to clamp the first clamping groove 111 of the corresponding height of the slide 7. The infrared thermal imaging acquisition module 9 that has dropped one level can perform circular scanning and flaw detection on the second layer surface counting from the bottom of the insulator 101. This is repeated to achieve layered scanning of the insulator 101.

[0040] After completing the layered flaw detection of the insulator 101 from top to bottom, the motor 3 is turned off. At this time, the second spring 15 is reset to drive the pressure frame 14 to slide downward. The pressure frame 14 drives the rotating rod 4 to reverse through the threaded groove. The pressure frame 14 slides downward until it contacts the arc block 13, and by squeezing the arc block 13, the first clamping rod 11 slides to the left to release the slide 7. The first spring 12 is compressed, and the initial state is automatically restored.

[0041] In summary, when the present invention drives the insulator 101 to rotate through the rotating module 2 to perform circular scanning flaw detection, the wedge surface 162 also intermittently cooperates with the first clamping rod 11 to automatically realize the step-by-step descent of the infrared thermal imaging acquisition module 9, so as to realize layered scanning of the insulator 101, ensuring that the surface details of each layer can be fully detected, especially for complex and uneven insulators 101, layered scanning can reduce detection blind spots caused by viewing angle or distance.

[0042] Embodiment 2: Based on embodiment 1, Figure 4 To Attachment Figure 6, also includes a card frame 16, the card frame 16 is slidably connected to the rotating frame 10, the card frame 16 is composed of a rectangular frame and two left and right protrusions, the bottom end of the rotating rod 4 is fixedly connected to a Y-shaped block 161, the output shaft of the motor 3 drives the rotating frame 10 to rotate, and the rotating frame 10 drives the card frame 16 to rotate. When the card frame 16 rotates, the Y-shaped block 161 is intermittently toggled to rotate by the protrusion on one side, and the Y-shaped block 161 drives the rotating rod 4 to rotate, and the right side of the rotating frame 10 is fixedly connected to an electromagnet 17, and the right end of the first card rod 11 is fixedly connected to a contact switch 171, and the wedge-shaped surface 162 is squeezed and matched with the contact switch 171 when rotating, and the contact switch 171 is electrically connected to the electromagnet 17 through the control module, and the right side of the card frame 16 is fixedly connected to a magnetic block 18. When power is turned on, the electromagnet 17 and the magnetic block 18 are magnetically matched, and a tension spring 19 is fixedly connected between the left side of the card frame 16 and the rotating frame 10.

[0043] In the above-mentioned layered scanning process, since the infrared thermal image acquisition module 9 has a process of descending from the current level to the next level, and the insulator 101 is still rotating during this process, there is a partial blank area in the next level of the insulator 101 that cannot be inspected. To avoid the blank area, the motor 3 cannot be stopped every time the infrared thermal image acquisition module 9 descends (first, the operation is cumbersome, and second, once the motor 3 is stopped, it can be seen from the above that the first clamping rod 11 will automatically release the lock on the slide 7, resulting in the infrared thermal image acquisition module 9 being unable to automatically stop at the height of the next level). Therefore, each time the insulator 101 descends, the output shaft of the motor 3 can only drive the rotating frame 10 to idle for a short time, so that the rotating rod 4 is paused, thereby pausing the rotating module 2, and then pausing the infrared thermal image acquisition module 9. In this way, the situation that there is a partial blank area that cannot be inspected can be avoided. The specific operation is as follows:

[0044] At the beginning, the Y-block 161 contacts the convex block on the right side of the bracket 16, and the rotating bracket 10 rotates through the bracket 16 to drive the Y-block 161 to rotate, thereby driving the rotating rod 4 to rotate, and the rotating rod 4 drives the infrared thermal imaging acquisition module 9 to rotate through the rotating module 2, so as to perform circumferential flaw detection on the insulator 101 at this level. When the rotating bracket 10 rotates one circle, the rotating bracket 10 squeezes the first clamping rod 11 to slide to the left through the wedge surface 162, and the infrared thermal imaging acquisition module 9 starts to automatically descend. At the same time, the contact switch 171 is contacted by the wedge surface 162, so that the contact switch 171 controls the electromagnet 17 to be energized through the control module, so that the electromagnet 17 attracts the magnetic block 18 through magnetic force, thereby driving the bracket 16 to slide along the rotating bracket 10 to the side close to the electromagnet 17, and the tension spring 19 is stretched. The projection on the right side of the card frame 16 is completely separated from the rotating rod 4, and the projection on the left side of the card frame 16 is in contact with the rotating rod 4. At this time, the two projections of the card frame 16 are not in contact with the Y-shaped block 161, and thus cannot drive the Y-shaped block 161 to rotate. After a period of time (during this period, the output shaft of the motor 3 drives the rotating frame 10 to idle), the projection on the left side of the card frame 16 rotates to contact with the Y-shaped block 161, thereby driving the Y-shaped block 161 to rotate again. When the infrared thermal imaging acquisition module 9 starts to automatically descend next time, the contact switch 171 is contacted by the wedge surface 162 again, so that the contact switch 171 controls the electromagnet 17 to cut off the power through the control module, and the tension spring 19 is reset to drive the card frame 16 to slide in the opposite direction and reset, which can also realize that the output shaft of the motor 3 drives the rotating frame 10 to idle for a period of time.

[0045] In this way, each time the insulator 101 descends, the present invention intermittently contacts the contact switch 171 through the wedge surface 162, controls the intermittent on and off of the electromagnet 17, so that the output shaft of the motor 3 drives the rotating frame 10 to intermittently idle for a short time, so that the rotating rod 4 is paused, thereby pausing the rotating module 2, and then pausing the infrared thermal imaging acquisition module 9, thereby solving the problem that when the infrared thermal imaging acquisition module 9 descends, there is a local blank area that cannot be inspected.

[0046] Embodiment 3: Based on Embodiment 2, Figure 7 To Attachment Figure 8 , and also includes a guide frame 20 for guiding the mounting plate 8. The guide frame 20 can be detachably mounted on a side of the support frame 6 close to the slide 7. The slide 7 is slidably connected to the mounting plate 8. The guide frame 20 has a guide groove. The bottom of the mounting plate 8 is rotatably connected to rollers 21 symmetrically distributed along the front and rear of the mounting plate 8. The rollers 21 are limitedly matched with adjacent guide grooves.

[0047] First, according to the shape of the insulator 101, the guide frame 20 corresponding to the track guide groove is matched and installed. When the mounting plate 8 drives the infrared thermal imaging acquisition module 9 to be lowered, the mounting plate 8 is automatically moved left and right through the cooperation of the guide groove and the roller 21, thereby automatically adjusting the distance between the infrared thermal imaging acquisition module 9 and the insulator 101, so that no matter at which level, the infrared thermal imaging acquisition module 9 is at the most suitable detection distance, reducing the detection blind spot caused by the increase in distance.

[0048] Embodiment 4: Based on Embodiment 3, Fig. 9 , and also includes a second clamping rod 22 for clamping the slide 7 that is reset upward. The second clamping rod 22 is slidably connected to the bottom tube 1, and a third spring 23 is fixedly connected between the second clamping rod 22 and the support frame 6. The end surface of the second clamping rod 22 away from the third spring 23 is set as an inclined surface, and the second clamping rod 22 is squeezed and matched with the pressing frame 14 through the inclined surface. A second clamping groove 222 is opened at the lower part of one side of the slide 7 close to the second clamping rod 22, and the second clamping groove 222 is limitedly matched with the second clamping rod 22.

[0049] As can be seen from the above, when the slide 7 is pulled upward to reset, the motor 3 needs to be started so that the slide 7 is locked. Before that, the slide 7 needs to be held by hand all the time, which is troublesome to operate. Therefore, in order to achieve automatic locking when the slide 7 is pulled upward to reset, the specific operation is as follows:

[0050] When the slide 7 is pulled upward, the second clamping rod 22 is aligned with the second clamping groove 222. At this time, the third spring 23 in the compressed state is reset so that the second clamping rod 22 is clamped into the second clamping groove 222, and the slide 7 can be automatically locked when it is reset upward. There is no need to hold the slide 7 all the time. When the pressing frame 14 moves upward, the pressing frame 14 squeezes the inclined surface on the right side of the second clamping rod 22, so that the second clamping rod 22 slides to the right, the third spring 23 is compressed, and the second clamping rod 22 automatically releases the lock on the pressing frame 14, and the pressing frame 14 can perform subsequent layered drops.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A flaw detection device for porcelain insulator production, characterized by: The invention comprises a base cylinder (1), wherein the base cylinder (1) is rotatably connected to a rotating module (2), an insulator (101) is placed on the top of the rotating module (2), the base cylinder (1) is fixedly connected to a motor (3), the base cylinder (1) is rotatably connected to a rotating rod (4), the motor (3) is used to drive the rotating rod (4) to rotate, the rotating rod (4) is fixedly connected to the rotating module (2), the rotating module (2) is fixedly connected to a constant heating module (5) for heating the insulator (101), the base cylinder (1) is fixedly connected to a supporting frame (6), the supporting frame (6) is slidably connected to a sliding frame (7), the sliding frame (7) is provided with a mounting plate (8), an infrared thermal imaging acquisition module (9) is fixedly mounted on the mounting plate (8), the output shaft of the motor (3) is fixedly connected to a rotating frame (10), the base cylinder (1) is slidably connected to a first clamping rod (11), and the sliding frame (7) is provided with first clamping grooves (111) distributed at equal intervals in the longitudinal direction. The first clamping rod (11) is limitedly engaged with one of the first clamping grooves (111), a first spring (12) is fixedly connected between the first clamping rod (11) and the support frame (6), an arc block (13) is fixedly connected to one end of the first clamping rod (11) close to the motor (3), a pressing frame (14) is slidably connected in the bottom tube (1), the pressing frame (14) is pressed and engaged with the arc block (13), and the rotating rod (4) is connected to the pressing frame (14) through a threaded groove. The rotating frame (10) is threadedly connected, the rotating rod (4) is provided with a rotating groove (141), the rotating groove (141) is located at the upper end of the thread groove, one end of the rotating frame (10) is arranged as a wedge-shaped surface (162), when the wedge-shaped surface (162) rotates, it is pressed and matched with the end surface of the first clamping rod (11) close to the motor (3), a second spring (15) is fixedly connected between the rotating rod (4) and the pressing frame (14), and the rotating frame (10) is slidably connected to the clamping frame (16).

2. A flaw detection device for porcelain insulator production as claimed in claim 1, characterized in that: The invention also comprises a Y-shaped block (161), wherein the Y-shaped block (161) is fixedly connected to one end of the rotating rod (4) close to the bracket (16), and the bracket (16) is used to rotate and toggle the Y-shaped block (161) to rotate; an electromagnet (17) is fixedly connected to one side of the rotating rack (10); a magnetic block (18) is fixedly connected to the side of the bracket (16) close to the electromagnet (17); the electromagnet (17) and the magnetic block (18) cooperate with each other through magnetic force; a tension spring (19) is fixedly connected between the side of the bracket (16) away from the electromagnet (17) and the rotating rack (10); and the first clamping rod (11) is provided with a control component for controlling the on and off of power to the electromagnet (17).

3. A flaw detection device for porcelain insulator production as claimed in claim 2, characterized in that: the control part The contact switch (171) is fixedly connected to an end of the first clamping rod (11) away from the slide (7); the wedge-shaped surface (162) is pressed and matched with the contact switch (171) when rotating; and the contact switch (171) is electrically connected to the electromagnet (17) via a control module.

4. A flaw detection device for porcelain insulator production as claimed in claim 3, characterized in that: When power is supplied, the electromagnet (17) and the magnetic block (18) are magnetically attracted to each other.

5. A flaw detection device for porcelain insulator production as claimed in claim 4, characterized in that: The slide frame (7) is slidably connected to the mounting plate (8).

6. A flaw detection device for porcelain insulator production as claimed in claim 5, characterized in that: It also includes a guide frame (20) for guiding the mounting plate (8), and the guide frame (20) is detachably mounted on a side of the support frame (6) close to the slide frame (7).

7. A flaw detection device for porcelain insulator production as claimed in claim 6, characterized in that: The guide frame (20) is provided with a guide groove, and the mounting plate (8) is rotatably connected to rollers (21) symmetrically distributed along the mounting plate (8), and the rollers (21) are limitedly matched with adjacent guide grooves.

8. A flaw detection device for porcelain insulator production as claimed in claim 7, characterized in that: The invention also comprises a second clamping rod (22) for clamping the slide (7) when it is reset upwards, the second clamping rod (22) being slidably connected to the bottom tube (1), a third spring (23) being fixedly connected between the second clamping rod (22) and the support frame (6), a second clamping groove (222) being formed at a lower part of a side of the slide (7) close to the second clamping rod (22), and the second clamping groove (222) and the second clamping rod (22) being limitedly matched.

9. A flaw detection device for porcelain insulator production as claimed in claim 8, characterized in that: The end surface of the second clamping rod (22) away from the third spring (23) is arranged as an inclined surface, and the second clamping rod (22) is pressed and matched with the pressing frame (14) via the inclined surface.

10. A flaw detection method for porcelain insulator production, which is performed using a flaw detection device for porcelain insulator production according to any one of claims 1 to 9, characterized in that: The steps include: S1, placing the insulator (101) on top of the rotating module (2), and inserting the constant heating module (5) into the insulator (101); S2, pulling the slide (7) upwards so that the first clamping slot (111) at the bottom moves upwards to the height of the first clamping rod (11); S3, starting the motor (3), and performing circumferential layered flaw detection on the insulator (101); S4. After completing the layered flaw detection of the insulator (101) from top to bottom, shut down the motor (3).

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