High-speed flaw detection equipment for internal defects of copper rod and working method of high-speed flaw detection equipment

Abstract

The invention relates to the technical field of metal flaw detection, in particular to high-speed flaw detection equipment for internal defects of a copper rod and a working method of the high-speed flaw detection equipment. The flaw detection mechanism is used for detecting flaws of the copper rods; the two limiting mechanisms are arranged on the two sides of the flaw detection mechanism and used for limiting shaking of the copper rod; the cleaning mechanism comprises a fixed seat which is independently and fixedly arranged; the rotating seat is driven by the motor to rotate on the fixed seat; the plurality of rotating blocks are rotationally arranged on the end surface of the rotating seat and are annularly distributed along the rotating seat; the driving mechanism is used for driving the multiple rotating blocks to rotate synchronously; the plurality of air knives are respectively arranged on the plurality of rotating blocks; a certain angle is axially formed between the air knife and the copper rod; during working, air outlets of the air knives are aligned with the tangential direction of the outer side face of the copper rod. The invention can effectively solve the problem that the flaw detection accuracy is influenced because impurities are easy to remain on the copper rod during flaw detection in the existing flaw detection technology.

Description

Technical Field

[0001] The invention relates to the technical field of metal flaw detection, and in particular to a high-speed flaw detection device for internal defects of a copper rod and a working method thereof. Background Art

[0002] During the production process of copper rods, it is necessary to perform flaw detection on the inside of the copper rods to ensure that there are no cracks or voids inside the copper rods. The copper rods move continuously and at high speed during production, so eddy current detection technology or ultrasonic detection technology is usually used to achieve high-speed flaw detection of copper rods. These technologies usually reflect the shape of the copper rods through electromagnetic induction or vibration wave changes, so as to judge whether they have defects. In existing flaw detection operations, since the copper rods will go through processing, cleaning and other steps, impurities such as copper chips and water droplets are likely to remain on the surface of the copper rods, and these impurities will have a greater impact on the flaw detection of the copper rods. Summary of the invention

[0003] The invention provides a high-speed flaw detection device for internal defects of a copper rod and a working method thereof, which can effectively solve the problem in the background technology that impurities are easily left on the copper rod, thereby affecting the accuracy of flaw detection.

[0004] The present invention provides a high-speed flaw detection device for internal defects of a copper rod, comprising: Cleaning mechanism, used to remove impurities on the surface of the copper rod; A flaw detection mechanism, used for flaw detection of copper rods; Two limit mechanisms are arranged on both sides of the flaw detection mechanism to limit the shaking of the copper rod; Cleaning agencies include: Fixed seat, independent fixed setting; The rotating seat is driven by a motor to rotate on the fixed seat; A plurality of rotating blocks are rotatably arranged on the end surface of the rotating seat and are distributed along the circumferential direction of the rotating seat; A driving mechanism, used to drive multiple rotating blocks to rotate synchronously; Multiple wind knives are respectively arranged on multiple rotating blocks; the wind knives form a certain angle with the axial direction of the copper rod; When working, the air outlet of the wind knife is aligned with the outer side surface of the copper rod.

[0005] Furthermore, the limiting mechanism includes two roller groups, each roller group is provided with two clamping rollers, the copper rod passes through the two clamping rollers, and the two clamping rollers in one roller group are distributed vertically, and the two clamping rollers in the other roller group are distributed horizontally.

[0006] Furthermore, a first air channel is arranged on the rotating seat, a connecting groove is arranged on the end surface of the rotating block, and a second air channel is also arranged on the rotating block; the first air channel is connected to the connecting groove, and both ends of the second air channel are respectively connected to the connecting groove and the wind knife.

[0007] Furthermore, the distance between the connecting groove and the rotating axis of the rotating block is smaller than the distance between the wind knife and the rotating axis of the rotating block.

[0008] Furthermore, the driving mechanism comprises: A sleeve is sleeved on the rotating seat; a plurality of guide grooves are arranged on the end surface of the sleeve; A plurality of guide posts, each of which passes through a corresponding guide slot, and an end portion of the guide post is fixedly mounted on the rotating block.

[0009] Furthermore, a slide groove is provided on the side of the sleeve, and the slide groove forms a certain angle with the axis of the copper rod; A sliding block is arranged on the rotating seat, the sliding block slides along the axial direction of the copper rod, and one end of the sliding block extends into the sliding groove.

[0010] Furthermore, a rotating shaft is arranged on the rotating seat, a threaded section is arranged on the rotating shaft; a threaded hole is arranged on the sliding block; and the threaded section is meshed with the threaded hole.

[0011] Furthermore, a plurality of positioning mechanisms are included, each positioning mechanism comprising: A connecting block is detachably connected to the rotating block and rotates synchronously; The positioning bar is fixedly mounted on the connecting block, and the side of the positioning bar facing the copper rod is aligned with the air outlet of the wind knife.

[0012] Furthermore, a metal sheet is arranged on the positioning bar, and a side surface of the metal sheet is flush with a side of the positioning bar facing the copper rod.

[0013] The present invention also provides a method for using a copper rod internal defect high-speed flaw detection device, which is used for the above copper rod internal defect high-speed flaw detection device, comprising: S10: The driving mechanism drives the plurality of rotating blocks to rotate outward; S20: Pass the copper rod through the cleaning mechanism and the flaw detection mechanism, and fix the copper rod with a limiting mechanism; S30: The driving mechanism drives the multiple rotating blocks to rotate outwards so that the air outlet of the wind knife is aligned with the tangential direction of the outer side surface of the copper rod; S40: Supply air into the flaw detection mechanism so that the wind knife can blow air outward, start the motor to drive the rotating seat to rotate, so that the wind knife rotates circumferentially along the copper rod to blow away impurities on the copper rod; the copper rod moves forward, so that the flaw detection mechanism continues to perform flaw detection on the copper rod.

[0014] The technical solution of the present invention can achieve the following technical effects: This equipment has improved the cleaning mechanism to ensure that there will be no impurities left on the copper rod that affect the detection accuracy. When the cleaning mechanism is working, the driving mechanism will adjust the rotation angle of the rotating block so that the air outlet of the wind knife is just aligned with the tangent direction of the outer side of the copper rod, and the thrust of the airflow on the impurities is always in the tangent direction of the outer side of the copper rod, so that the impurities can be blown away better; and the motor will continuously drive the rotating seat to rotate, so that the rotating block and the wind knife can rotate around the copper rod continuously, so that the airflow blown by the wind knife can rotate around the copper rod, and the airflow can traverse the entire outer side of the copper rod in an annular direction, thereby ensuring the rapid cleaning effect of the entire outer surface of the copper rod. At the same time, the rotatable design of the rotating block makes the direction of the wind knife adjustable, so that it can adapt to copper rods of various diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the high-speed flaw detection equipment for internal defects of copper rods in the present invention; Figure 2 It is a structural schematic diagram of the limiting mechanism in the present invention; Figure 3 It is a schematic diagram of the structure of the cleaning mechanism in the present invention; Figure 4 It is a front view of the cleaning mechanism in the present invention; Figure 5 is a side sectional view of the cleaning mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the cleaning mechanism in the present invention after the sleeve is removed; Figure 7 It is a schematic diagram of the structure of the cleaning mechanism of the present invention after being disassembled as a whole; Figure 8 It is a front structural schematic diagram of the transfer block of the present invention; Fig. 9 It is a schematic diagram of the back structure of the transfer block of the present invention; Fig.10 It is a structural schematic diagram of the positioning mechanism in the present invention.

[0017] Figure numerals: 1. flaw detection mechanism; 2. limiting mechanism; 21. clamping roller; 3. fixed seat; 4. rotating seat; 41. first air duct; 42. sliding block; 43. rotating shaft; 5. rotating block; 51. connecting groove; 52. second air duct; 6. driving mechanism; 61. sleeve; 61a. guide groove; 61b. slide groove; 62. guide column; 7. wind knife; 8. positioning mechanism; 81. connecting block; 82. positioning strip; 83. metal sheet. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The present invention relates to a high-speed flaw detection device for internal defects of a copper rod. Figure 1 As shown, its main structure includes: The cleaning mechanism can blow air to the surface of the copper rod to remove copper scraps, residual water and other impurities on the surface of the copper rod; The flaw detection mechanism 1 may be an ultrasonic flaw detector or an eddy current flaw detector, which can be used to detect flaws on the copper rod; Two limit mechanisms 2 are arranged on both sides of the flaw detection mechanism 1 to limit the shaking of the copper rod to prevent the shaking of the copper rod from affecting the detection data of the flaw detection mechanism 1 and causing misjudgment.

[0022] The specific structure of the cleaning mechanism is as follows Figures 3 to 10 As shown, including: The fixing seat 3 is independently fixed and used to carry other components in the cleaning mechanism; a through hole is provided in the center of the fixing seat 3 for the copper rod to pass through; The rotating seat 4 is driven by a motor to rotate on the fixed seat 3; a through hole is also provided at the center of the rotating seat 4 for the copper rod to pass through; A plurality of rotating blocks 5 are rotatably arranged on the end surface of the rotating seat 4, the distance between the rotating axis of each rotating block 5 and the axis of the copper rod is equal, and the plurality of rotating blocks 5 are distributed in an annular array along the rotating seat 4; A driving mechanism 6, used for driving the multiple rotating blocks 5 to rotate synchronously; A plurality of wind knives 7 are respectively arranged on a plurality of rotating blocks 5; the wind knives 7 form a certain angle with the axial direction of the copper rod, so that the airflow blown out by the wind knives 7 can flow obliquely toward the copper rod.

[0023] The airflow from the traditional air blowing cleaning structure is directly facing the copper rod, and the center of the airflow is facing the axis of the copper rod. Therefore, if the impurities are in the middle of the axis, the airflow will push the copper chips and other impurities closer to the surface of the copper rod, making it difficult to blow them off. When some impurities are located at the position of the concave defects on the surface of the copper rod, it is difficult for the airflow to blow them out. In addition, the area that the airflow can reach is limited, and the cylindrical side of the copper rod easily blocks the airflow, making it difficult to remove the impurities that cannot be blown to the airflow.

[0024] This cleaning mechanism can better solve the above problems, and its specific working process and principle are as follows: When the cleaning mechanism is working, the rotation angle of the rotating block 5 will be adjusted through the driving mechanism 6, so that the air outlet of the wind knife 7 is just aligned with the tangential direction of the outer side of the copper rod, and the thrust of the airflow on the impurities is always in the tangential direction of the outer side of the copper rod, so that the impurities can be blown away better; and the motor will continuously drive the rotating seat 4 to rotate, so that the rotating block 5 and the wind knife 7 can rotate around the copper rod continuously, so that the airflow blown by the wind knife 7 can rotate around the copper rod, so that the airflow can traverse the entire outer side of the copper rod in an annular direction, thereby ensuring the rapid cleaning effect of the entire outer surface of the copper rod. At the same time, the rotatable design of the rotating block 5 makes the direction of the wind knife 7 adjustable, so that it can adapt to copper rods of various diameters.

[0025] There are many existing implementations of the limiting mechanism 2. The present device provides a limiting mechanism 2 in a relatively low cost form, such as Figure 2 As shown, it includes two roller groups, each roller group is provided with two clamping rollers 21, the two clamping rollers 21 can move away from and approach each other, and their positions can be locked. During installation, the two clamping rollers 21 are moved away from each other, and after the copper rod passes through the two clamping rollers 21, the two clamping rollers 21 are moved closer to each other to clamp the copper rod, and then the positions of the two clamping rollers 21 are locked, thereby restricting the copper rod; when the roller groups are set, the two clamping rollers 21 in one roller group are distributed vertically, and the two clamping rollers 21 in the other roller group are distributed horizontally, so that the two roller groups can limit the shaking of the copper rod in the corresponding directions from the vertical and horizontal directions respectively.

[0026] In the existing structure, the air knife 7 is usually supplied with air through a pipe. However, in this device, since the air knife 7 needs to rotate around the copper rod, the air supply method using the existing structure will cause the pipe to be entangled on the copper rod. In order to avoid the above problem, this device has a new design for the air supply structure, and the specific structure is as follows: A first air duct 41 is arranged on the rotating seat 4, one end of the first air duct 41 moves away from the rotating block 5, and an annular groove is formed at the distal end. This only requires a through hole to be arranged on the fixed seat 3 or other external equipment, and the section of the annular groove is extended into the through hole, and then an air duct connecting the pipeline is arranged on the side of the through hole. The airflow will pass through the air duct to first reach the position of the annular groove at the end of the first air duct 41, and then enter the first air duct 41, so that air can be supplied to the first air duct 41 without the pipeline moving; a connecting groove 51 is arranged on the end face of the rotating block 5, and the connecting groove 51 is arc-shaped, and the center point of the arc is located on the rotating axis of the rotating block 5, the first air duct 41 is connected to the connecting groove 51, and a second air duct 52 is also arranged on the rotating block 5, and the two ends of the second air duct 52 are respectively connected to the connecting groove 51 and the wind knife 7, so that during the rotation of the rotating block 5, the connecting groove 51 can be connected with the first air duct 41 to realize air supply.

[0027] It is preferred that the distance between the connecting groove 51 and the rotating axis 43 of the rotating block 5 is smaller than the distance between the wind knife 7 and the rotating axis 43 of the rotating block 5, that is, the distance of the arc radius of the connecting groove 51 is smaller than the rotation radius of the wind knife 7. Under this structure, even if the wind knife 7 needs to move a large distance, the arc length of the connecting groove 51 can still be relatively shortened, thereby reducing the wear on the sealing ring arranged around the connecting groove 51.

[0028] The driving mechanism 6 can be implemented in various existing forms such as connecting rods and motors. However, considering that the rotating seat 4 and the rotating block 5 need to rotate around the copper rod, the complex structure is not conducive to such rotation requirements. Therefore, the present device designs a more concise driving mechanism 6, including: The sleeve 61 is sleeved on the rotating seat 4; a plurality of guide grooves 61a are provided on the end surface of the sleeve 61, and the distance between one end of the guide groove 61a and the axis of the copper rod is smaller than the distance between the other end of the guide groove 61a and the axis of the copper rod; There are multiple guide columns 62, each of which passes through a corresponding guide groove 61a, and the end is installed on the rotating block 5 by means of threaded connection or other fixing methods after passing through the guide groove 61a, and the connection between the guide column 62 and the rotating block 5 should be as far away from the rotating axis of the rotating block 5 as possible.

[0029] In this structure, as long as the sleeve 61 and the rotating seat 4 rotate relative to each other, the guide groove 61 a will push the guide post 62 to the corresponding position, and the guide post 62 can drive the rotating block 5 to rotate.

[0030] For the structure that drives the sleeve 61 and the rotating seat 4 to rotate relative to each other, the device also has a corresponding simple design, and the specific structure includes: A slide groove 61b is provided on the side of the sleeve 61, and the slide groove 61b forms a certain angle with the axis of the copper rod; A sliding block 42 is disposed on the rotating seat 4. The sliding block 42 slides along the axial direction of the copper rod, and one end of the sliding block 42 extends into the sliding groove 61b. When the sliding block 42 moves, the side wall of the sliding block 42 will push the sliding groove 61b, thereby generating relative rotation between the sleeve 61 and the rotating seat 4. This structure can convert the rotation demand of the sleeve 61 into the sliding demand of the sliding block 42. Even if the rotation angle is small, the sliding distance of the sliding block 42 after the conversion is relatively large, thereby achieving precise control of the rotation amount of the sleeve 61, and then achieving precise control of the rotation amount of the rotating block 5.

[0031] The sliding of the sliding block 42 can be achieved through the following structure: a rotating shaft 43 is set on the rotating seat 4, and a threaded section is set on the rotating shaft 43; a threaded hole is set on the sliding block 42; the threaded section is engaged with the threaded hole to form a screw slider mechanism, so that by rotating the rotating shaft 43, the sliding of the sliding block 42 can be driven, and the sliding of the sliding block 42 cannot drive the rotating shaft 43 in turn, thereby realizing the self-locking of the rotation angle of the sleeve 61.

[0032] Since it is difficult to observe with naked eyes whether the air outlet of the wind knife 7 is tangent to the side of the copper rod, the device also includes a plurality of positioning mechanisms 8 for positioning the rotation angle of the rotating block 5, each positioning mechanism 8 includes: The connecting block 81 needs to be detachably connected to the rotating block 5 and rotate synchronously. One implementation structure is to set an outwardly protruding connecting block on the rotating block 5. The connecting block is coaxial with the rotating axis of the rotating block 5. The connecting block 81 is sleeved on the connecting block, and then screws or plane fitting are used to ensure that the connecting block 81 and the rotating block 5 cannot rotate relative to each other. The positioning bar 82 is fixedly mounted on the connecting block 81 , and the side of the positioning bar 82 facing the copper rod is aligned with the air outlet of the wind knife 7 .

[0033] When the position of the rotating block 5 needs to be adjusted, the positioning mechanism 8 can be installed on the device. Two or more positioning mechanisms 8 can be installed as needed. As the rotating block 5 rotates, the positioning bars 82 can also rotate together. When the positioning bars 82 stick to the side of the copper rod, the rotating block can no longer rotate. At this time, the positioning of the wind knife 7 is completed, and then the positioning mechanisms 8 can be removed.

[0034] Of course, if only the above-mentioned physical limiting form is used, then when the positioning bar 82 just sticks to the copper rod, the personnel may not notice it and will continue to apply force to the rotating block 5, which is easy to cause pressure damage to the surface of the copper rod. Therefore, the device is also optimized in design: the connecting block 81 and the positioning bar 82 are made of non-conductive materials such as plastic, and a metal sheet 83 is arranged on the positioning bar 82. The side of the metal sheet 83 is flush with the side of the positioning bar 82 facing the copper rod. When working, the metal sheet 83 of one positioning mechanism 8 is connected to the electrical signal generating device, and the metal sheet 83 of the other positioning mechanism 8 is connected to the electrical signal receiving device. At the moment when each positioning bar 82 contacts the copper rod, the electrical signal can be conducted through the copper rod, so that the electrical signal receiving device receives the electrical signal, and then sends a signal in time to stop the rotation of the rotating block 5, thereby avoiding pressure damage to the surface of the copper rod.

[0035] The present invention also relates to a method for using a copper rod internal defect high-speed flaw detection device, which is used for the above copper rod internal defect high-speed flaw detection device, comprising: S10: the driving mechanism 6 drives the plurality of rotating blocks 5 to rotate outwards; S20: Pass the copper rod through the cleaning mechanism and the flaw detection mechanism 1, and fix the copper rod with the limiting mechanism 2; S30: The driving mechanism 6 drives the plurality of rotating blocks 5 to rotate outwards, so that the air outlet of the wind knife 7 is aligned with the outer side surface of the copper rod; S40: Supply air into the flaw detection mechanism 1 so that the air knife 7 can blow air outward, start the motor to drive the rotating seat 4 to rotate, so that the air knife 7 rotates circumferentially along the copper rod to blow away impurities on the copper rod; the copper rod moves forward, so that the flaw detection mechanism 1 continues to perform flaw detection on the copper rod.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-speed flaw detection device for internal defects of copper rods, characterized in that: include: Cleaning mechanism, used to remove impurities on the copper rod surface; A flaw detection mechanism (1), used for performing flaw detection on the copper rod; Two limiting mechanisms (2) are arranged on both sides of the flaw detection mechanism (1) and are used to limit the shaking of the copper rod; The cleaning mechanism comprises: A fixing seat (3), independently fixedly arranged; A rotating seat (4) driven by a motor to rotate on the fixed seat (3); A plurality of rotating blocks (5) are all rotatably arranged on the end surface of the rotating seat (4) and are distributed circumferentially along the rotating seat (4); A driving mechanism (6) for driving the plurality of rotating blocks (5) to rotate synchronously; A plurality of wind knives (7) are respectively arranged on a plurality of the rotating blocks (5); the wind knives (7) form a certain angle with the axial direction of the copper rod; When working, the air outlet of the wind knife (7) is aligned with the tangential direction of the outer side surface of the copper rod.

2. The copper rod internal defect high-speed flaw detection equipment according to claim 1 is characterized in that: The limiting mechanism (2) comprises two roller groups, each roller group is provided with two clamping rollers (21), the copper rod passes through the two clamping rollers (21), and the two clamping rollers (21) in one roller group are vertically distributed, and the two clamping rollers (21) in the other roller group are horizontally distributed.

3. The copper rod internal defect high-speed flaw detection equipment according to claim 1 is characterized in that: A first air channel (41) is arranged on the rotating seat (4), a connecting groove (51) is arranged on the end surface of the rotating block (5), and a second air channel (52) is also arranged on the rotating block (5); the first air channel (41) is connected to the connecting groove (51), and the two ends of the second air channel (52) are respectively connected to the connecting groove (51) and the wind knife (7).

4. The copper rod internal defect high-speed flaw detection equipment according to claim 3 is characterized in that: The distance between the connecting groove (51) and the rotating shaft (43) of the rotating block (5) is smaller than the distance between the wind knife (7) and the rotating shaft (43) of the rotating block (5).

5. The copper rod internal defect high-speed flaw detection equipment according to claim 1 is characterized in that: The driving mechanism (6) comprises: A sleeve (61) is sleeved on the rotating seat (4); a plurality of guide grooves (61a) are arranged on the end surface of the sleeve (61); A plurality of guide columns (62), each of the guide columns (62) passes through a corresponding guide slot (61a), and an end portion is fixedly mounted on the rotating block (5).

6. The copper rod internal defect high-speed flaw detection equipment according to claim 5, characterized in that: A slide groove (61b) is provided on the side of the sleeve (61), and the slide groove (61b) forms a certain angle with the axis of the copper rod; A sliding block (42) is arranged on the rotating seat (4), and the sliding block (42) slides along the axial direction of the copper rod, and one end of the sliding block (42) extends into the sliding groove (61b).

7. The copper rod internal defect high-speed flaw detection equipment according to claim 6, characterized in that: A rotating shaft (43) is arranged on the rotating seat (4), and a threaded section is arranged on the rotating shaft (43); a threaded hole is arranged on the sliding block (42); and the threaded section is meshed with the threaded hole.

8. The copper rod internal defect high-speed flaw detection equipment according to claim 5, characterized in that: It also includes a plurality of positioning mechanisms (8), each positioning mechanism (8) comprising: A connecting block (81) is detachably connected to the rotating block (5) and rotates synchronously; A positioning bar (82) is fixedly mounted on the connecting block (81), and a side of the positioning bar (82) facing the copper rod is aligned with the air outlet of the wind knife (7).

9. The copper rod internal defect high-speed flaw detection equipment according to claim 8, characterized in that: A metal sheet (83) is arranged on the positioning bar (82), and a side surface of the metal sheet (83) is flush with a side of the positioning bar (82) facing the copper rod.

10. A method for using a high-speed flaw detection device for internal defects of a copper rod, characterized in that: The high-speed flaw detection device for internal defects of a copper rod as claimed in any one of claims 1 to 9 comprises: S10: the driving mechanism (6) drives the plurality of rotating blocks (5) to rotate outwards; S20: passing the copper rod through the cleaning mechanism and the flaw detection mechanism (1), and fixing the copper rod with the limiting mechanism (2); S30: the driving mechanism (6) drives the plurality of rotating blocks (5) to rotate outwards, so that the air outlet of the wind knife (7) is aligned with the tangential direction of the outer side surface of the copper rod; S40: air is supplied to the flaw detection mechanism (1) so that the air knife (7) can blow air outward, and the motor is started to drive the rotating seat (4) to rotate, so that the air knife (7) rotates along the copper rod in a circular direction to blow away impurities on the copper rod; the copper rod moves forward, so that the flaw detection mechanism (1) continues to perform flaw detection on the copper rod.

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