Bar flaw detection device

Abstract

The utility model provides a bar flaw detection device. The bar flaw detection device comprises a base, a rolling shaft assembly, a moving assembly, a moving mounting head device and a flaw detection assembly, a water tank is arranged in the base, the rolling shaft assembly is arranged in the water tank, the rolling shaft assembly is arranged on the base, and the movable mounting head device is arranged on the movable assembly; the flaw detection assembly is arranged at the end of the movable mounting head device; the rolling shaft assembly comprises a first rolling shaft, second rolling shafts, second power sources and supporting seats, the two supporting seats are arranged in the grooves of the base, the two ends of the first rolling shaft and the two ends of the second rolling shaft are rotationally arranged on the supporting seats, and the two second power sources drive the first rolling shaft and the second rolling shaft to rotate correspondingly. The bar placing device has the beneficial effects that bars are placed through the rolling shaft assembly, and the bars are placed through rotation of the first rolling shaft and the second rolling shaft; the bar can be driven to rotate, and the bar can be located at the center position.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum bar flaw detection, in particular to a bar flaw detection device. Background Art

[0002] At present, the traditional bar flaw detection system uses spiral forward automatic flaw detection equipment. The material loading and unloading is automated through a stand and a flap, and the bar materials are collected and sorted by a basket, and the inspected materials are marked manually. During use, there are problems such as low loading and unloading efficiency, bar collision during the loading and unloading process, and insufficient stability of bar detection. Utility Model Content

[0003] In view of this, the utility model aims to propose a bar flaw detection device, which solves the problems of low loading and unloading efficiency, collision of bars during the loading and unloading process, and insufficient stability of bar detection.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A bar flaw detection device comprises a base, a roller assembly, a moving assembly, a moving mounting head device, and a flaw detection assembly;

[0006] A water tank is provided in the base, a roller assembly is provided in the water tank, the roller assembly is provided on the base, and a movable mounting head device is provided on the movable assembly; the flaw detection assembly is provided at the end of the movable mounting head device, the roller assembly comprises a first roller, a second roller, a second power source, and a support seat, the two support seats are provided in the groove of the base, the first roller and the second roller are rotatably provided at both ends on the support seat, and the two second power sources respectively drive the first roller and the second roller to rotate;

[0007] The first roller and the second roller rotate in opposite directions.

[0008] Furthermore, the moving assembly includes a sliding rod, the sliding rod is arranged on the base, the moving mounting head device is slidably arranged on the sliding rod, and a first power source is arranged on the base, and the first power source can push the moving mounting head device to slide along the sliding rod.

[0009] Furthermore, the mobile mounting head device includes a sliding block, an up-and-down adjustment device, a front-and-back adjustment device, and an angle adjustment device;

[0010] The sliding block is slidably arranged on the sliding rod, and the first power source can push the sliding block to move along the sliding rod;

[0011] The up-and-down adjusting device is installed on the sliding block, and the front-and-rear adjusting device and the angle adjusting device are arranged below the up-and-down adjusting device in sequence.

[0012] Furthermore, the up-down adjustment device comprises an up-down adjustment component and an up-down mounting plate, and a plurality of up-down adjustment components are arranged on the sliding block through the up-down mounting plate bolts;

[0013] The up and down adjustment assembly includes an up and down adjustment block, an up and down adjustment end plate, an up and down adjustment screw, an up and down slide rod, and an up and down locking plate. The up and down adjustment block is fixedly arranged on the slide block.

[0014] Two up and down adjustment end plates are arranged on both sides of the up and down sliding rods, the up and down adjustment screws are rotatably arranged on the up and down adjustment end plates, the two up and down sliding rods are arranged on both sides of the up and down adjusting screws, and the ends of the up and down adjusting screws are provided with a first hand wheel; the up and down adjustment blocks are threadedly arranged on the up and down adjusting screws, and the up and down adjustment blocks are slidably arranged on the up and down sliding rods.

[0015] In the present application, the upper and lower adjustment blocks can be moved up and down along the upper and lower adjustment screws by rotating the first hand wheel, thereby adjusting the height of the flaw detection assembly.

[0016] Furthermore, the upper and lower locking plates are provided with a first mounting through hole, and the upper and lower mounting plates are provided with a second mounting through hole corresponding to the first mounting through hole;

[0017] The upper and lower mounting plates are connected to the upper and lower locking plates through first locking bolts.

[0018] Further, the front-to-back adjustment device includes a front-to-back adjustment assembly, and a plurality of front-to-back adjustment assemblies are arranged at the bottom of the upper and lower adjustment assemblies;

[0019] The front and rear adjustment components include a front and rear adjustment block, a front and rear adjustment end plate, a front and rear adjustment screw rod, a front and rear slide rod, and a front and rear locking plate. The front and rear locking plate bolts are arranged at the bottom of the upper and lower adjustment components.

[0020] Two front and rear adjustment end plates are arranged on both sides of the front and rear sliding rods, the front and rear adjustment screws are rotatably arranged on the front and rear adjustment end plates, the two front and rear sliding rods are arranged on both sides of the front and rear adjustment screws, and a second hand wheel is arranged at the end of the front and rear adjustment screws; the front and rear adjustment blocks are threadedly arranged on the upper and lower adjustment screws, and the front and rear adjustment blocks are slidably arranged on the front and rear sliding rods.

[0021] In the present application, by rotating the second hand wheel, the front and rear adjustment blocks can be moved forward and backward along the upper and lower adjustment screws, thereby adjusting the front and rear position of the flaw detection assembly.

[0022] Further, the angle adjustment device includes a plurality of angle adjustment components, and the plurality of angle adjustment components are arranged below the front and rear adjustment devices;

[0023] The angle adjustment assembly includes an angle adjustment plate, an angle scale plate, an angle adjustment needle, a connecting rod assembly, and a supporting assembly;

[0024] The angle adjustment plate is arranged below the front and rear adjustment devices;

[0025] A protrusion is provided on the angle adjustment plate, and the angle adjustment needle is rotatably set on the protrusion through the first rotating rod; a second locking bolt is provided at the bottom of the protrusion; the present application fixes the first rotating rod through the second locking bolt.

[0026] The angle scale plate is arranged on the angle adjustment plate, and the position of the angle adjustment needle corresponds to the position of the angle scale plate.

[0027] A connecting rod assembly is provided at the end of the first rotating rod; a second rotating rod is provided at the other end of the connecting rod assembly, the second rotating rod is rotatably arranged on the angle adjustment plate, and the supporting assembly is fixedly arranged at the end of the second rotating rod;

[0028] The supporting assembly comprises an L-shaped supporting plate, the vertical end of which is arranged on one side of the second rotating rod, and the horizontal end of which is provided with a flaw detection installation hole for allowing the flaw detection assembly to pass through.

[0029] Further, the connecting rod assembly includes a first connecting rod, a second connecting rod, a first vertical rod, and a second vertical rod;

[0030] The middle portion of the first connecting rod is connected to the first rotating rod, and the middle portion of the second connecting rod is connected to the second rotating rod;

[0031] One end of the first vertical rod is rotatably connected to the first connecting rod, and the other end of the first vertical pipe is rotatably connected to the other end of the second connecting rod;

[0032] One end of the second vertical rod is rotatably connected to the first connecting rod, and the other end of the second vertical rod is rotatably connected to the other end of the second connecting rod.

[0033] Furthermore, the number of up and down adjustment components, front and rear adjustment components, and angle adjustment components is the same.

[0034] Compared with the prior art, the rod flaw detection device described in the utility model has the following advantages:

[0035] 1. The present application places the rods by means of a roller assembly, and places the rods by means of the rotation of a first roller and a second roller; this not only drives the rods to rotate, but also enables the rods to be located at a central position.

[0036] 2. The mobile mounting head of the present application realizes the left and right movement of the flaw detection component through the first power source. The present application realizes the front and rear position and the up and down position adjustment of the flaw detection component through the mobile mounting head, and can realize angle adjustment. Each probe has an independent adjustment function, which can meet the adjustment range of X: ±50mm; Y: ±50mm; Z: 0-100mm, and the probe clamping device can adjust the incident angle of the probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0038] Figure 1 It is an overall schematic diagram of the rod flaw detection device according to an embodiment of the utility model;

[0039] Figure 2 A schematic diagram of a movable mounting head of a bar flaw detection device according to an embodiment of the utility model;

[0040] Figure 3 It is a schematic diagram of a connecting rod assembly of a bar flaw detection device according to an embodiment of the utility model;

[0041] Figure 4 A schematic diagram of a water tank of a bar flaw detection device according to an embodiment of the utility model;

[0042] Figure 5 This is a schematic diagram of the use system of the rod flaw detection device described in an embodiment of the utility model.

[0043] Description of reference numerals:

[0044] 1. Base; 2. Sink; 3. Sliding rod; 4. Sliding block; 5. Upper and lower mounting plates; 6. Upper and lower adjustment blocks; 7. Upper and lower adjustment end plates; 8. Upper and lower adjustment screws; 9. Upper and lower sliding rods; 10. Upper and lower locking plates; 11. First hand wheel; 12. First locking bolt; 13. Front and rear adjustment blocks; 14. Front and rear adjustment end plates; 15. Front and rear adjustment screws; 16. Front and rear sliding rods; 17. Front and rear locking plates; 18. Second hand wheel; 19. Angle adjustment plate; 20. Angle scale plate; 21. Angle adjustment needle; 22. Bump; 23. First connecting rod; 24. Second connecting rod; 25. First vertical rod; 26. Second vertical rod; 27. L-shaped supporting plate; 28. First roller; 29. ​​Second roller; 30. Support seat; 31. Flaw detection assembly; 32. Feeding frame; 33. Bar flaw detection device; 34. Qualified material frame; 35. Unqualified material frame; 36. Manipulator; 37. Safety guardrail; 38. Control cabinet. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0046] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0047] like Figures 1 to 3As shown, a rod flaw detection device 33 includes a base 1, a roller assembly, a moving assembly, a moving mounting head device, and a flaw detection assembly 31; a water tank 2 is provided in the base 1, the roller assembly is arranged in the water tank 2, the roller assembly is arranged on the base 1, and the moving mounting head device is arranged on the moving assembly; the flaw detection assembly 31 is provided with an end of the moving mounting head device, the roller assembly includes a first roller 28, a second roller 29, a second power source, and a support seat 30, the two support seats 30 are arranged in the groove of the base 1, the first roller 28 and the second roller 29 are rotatably arranged at both ends on the support seat 30, and the two second power sources respectively drive the first roller 28 and the second roller 29 to rotate; the rotation directions of the first roller 28 and the second roller 29 are opposite.

[0048] The second power source is two driving motors, which respectively drive the first roller 28 and the second roller 29 to rotate.

[0049] The moving assembly includes a sliding rod 3, which is arranged on the base 1. The moving mounting head device is slidably arranged on the sliding rod 3. The base 1 is provided with a first power source, which can push the moving mounting head device to slide along the sliding rod 3. The moving mounting head device includes a sliding block 4, an up-and-down adjustment device, a front-and-back adjustment device, and an angle adjustment device; the sliding block 4 is slidably arranged on the sliding rod 3, and the first power source can push the sliding block 4 to move along the sliding rod 3;

[0050] The first power source is a push cylinder.

[0051] The up-down adjustment device is installed on the sliding block 4, and the front-back adjustment device and the angle adjustment device are arranged below the up-down adjustment device in sequence. The up-down adjustment device includes an up-down adjustment component and an up-down mounting plate 5. Several up-down adjustment components are arranged on the sliding block 4 through the up-down mounting plate 5 bolts; the up-down adjustment component includes an up-down adjustment block 6, an up-down adjustment end plate 7, an up-down adjustment screw 8, an up-down slide bar 9, and an up-down locking plate 10. The up-down adjustment block 6 is fixedly arranged on the sliding block 4, two up-down adjustment end plates 7 are arranged on both sides of the up-down slide bar 9, the up-down adjustment screw 8 is rotatably arranged on the up-down adjustment end plate 7, two up-down slide bars 9 are arranged on both sides of the up-down adjustment screw 8, and the end of the up-down adjustment screw 8 is provided with a first hand wheel 11; the up-down adjustment block 6 is threadedly arranged on the up-down adjustment screw 8, and the up-down adjustment block 6 is slidably arranged on the up-down slide bar 9. In the present application, the up-down adjustment block 6 can be moved up and down along the up-down adjustment screw 8 by rotating the first hand wheel 11, so as to adjust the height of the flaw detection component 31. The upper and lower locking plates 10 are provided with first mounting through holes, and the upper and lower mounting plates 5 are provided with second mounting through holes corresponding to the first mounting through holes; the upper and lower mounting plates 5 are connected to the upper and lower locking plates 10 via first locking bolts 12 .

[0052] The front-to-back adjustment device includes a front-to-back adjustment component, and several front-to-back adjustment components are arranged at the bottom of the upper and lower adjustment components; the front-to-back adjustment component includes a front-to-back adjustment block 13, a front-to-back adjustment end plate 14, a front-to-back adjustment screw 15, a front-to-back sliding rod 16, and a front-to-back locking plate 17, and the front-to-back locking plate 17 is bolted at the bottom of the upper and lower adjustment components; two front-to-back adjustment end plates 14 are arranged on both sides of the front-to-back sliding rod 16, the front-to-back adjustment screw 15 is rotatably arranged on the front-to-back adjustment end plates 14, two front-to-back sliding rods 16 are arranged on both sides of the front-to-back adjustment screw 15, and a second hand wheel 18 is arranged at the end of the front-to-back adjustment screw 15; the front-to-back adjustment block 13 is threadedly arranged on the upper and lower adjustment screw 8, and the front-to-back adjustment block 13 is slidably arranged on the front-to-back sliding rod 16. In the present application, the front-to-back adjustment block 13 can be moved forward and backward along the upper and lower adjustment screw 8 by rotating the second hand wheel 18, thereby adjusting the front-to-back position of the flaw detection component 31.

[0053] The angle adjustment device includes several angle adjustment components, which are arranged below the front and rear adjustment devices; the angle adjustment components include an angle adjustment plate 19, an angle scale plate 20, an angle adjustment needle 21, a connecting rod assembly, and a supporting assembly; the angle adjustment plate 19 is arranged below the front and rear adjustment devices; a protrusion 22 is arranged on the angle adjustment plate 19, and the angle adjustment needle 21 is arranged on the protrusion 22 by rotating through a first rotating rod; a second locking bolt is arranged at the bottom of the protrusion 22; the first rotating rod is fixed by the second locking bolt. The angle scale plate 20 is arranged on the angle adjustment plate 19, and the position of the angle adjustment needle 21 corresponds to the position of the angle scale plate 20. A connecting rod assembly is provided at the end of the first rotating rod; a second rotating rod is provided at the other end of the connecting rod assembly, and the second rotating rod is rotatably set on the angle adjustment plate 19, and the supporting assembly is fixedly set at the end of the second rotating rod; the supporting assembly includes an L-shaped supporting plate 27, the vertical end of the L-shaped supporting plate 27 is set on one side of the second rotating rod, and the horizontal end of the L-shaped supporting plate 27 is provided with a flaw detection mounting hole for allowing the flaw detection assembly 31 to pass through.

[0054] The flaw detection component 31 is an ultrasonic flaw detection sensor, which is electrically connected to a controller, and the controller adopts the existing PLC technology.

[0055] The model of the flaw detection component 31 is: V327-SU-CF1.50IN-PTF.

[0056] The connecting rod assembly includes a first connecting rod 23, a second connecting rod 24, a first vertical rod 25, and a second vertical rod 26; the middle of the first connecting rod 23 is connected to the first rotating rod, and the middle of the second connecting rod 24 is connected to the second rotating rod; one end of the first vertical rod 25 is rotatably connected to the first connecting rod 23, and the other end of the first vertical rod is rotatably connected to the other end of the second connecting rod 24; one end of the second vertical rod 26 is rotatably connected to the first connecting rod 23, and the other end of the second vertical rod 26 is rotatably connected to the other end of the second connecting rod 24. The number of up and down adjustment assemblies, front and back adjustment assemblies, angle adjustment assemblies, and flaw detection assemblies 31 is the same.

[0057] A bar flaw detection system includes a safety fence 37, a manipulator 36, a feeding frame 32, a qualified frame 34, an unqualified frame 35, and the above-mentioned bar flaw detection device 33; the feeding frame 32, the bar flaw detection device 33, and the qualified frame 34 are sequentially arranged in the safety fence 37, the unqualified frame 35 is arranged in the safety fence 37, and the unqualified frame 35 is arranged below the qualified frame 34; the manipulator 36 is arranged in the safety fence 37 and is arranged on one side of the bar flaw detection device 33, the safety fence 37 is provided with a protective door, the manipulator 36 is electrically connected to the control cabinet 38, the bar flaw detection device 33 is electrically connected to the control cabinet 38, and the control cabinet 38 adopts the existing PLC technology. A laser marking machine is arranged on the side of the qualified material.

[0058] In this system, the manipulator 36 is mainly used to move the bars between the pallet and the flaw detection host. The manipulator 36 moves the bars from the loading frame 32 to the flaw detection host. When unloading, the manipulator 36 grabs the middle section of the workpiece that has been inspected and stacks it in the unloading pallet. After the inspection of a piece of material is completed, the manipulator 36 takes it out and immediately puts the material to be inspected into the flaw detection host, realizing continuous inspection;

[0059] Each flaw detection component 31 can be adjusted in the direction of X (moving the mobile mounting head device to the left and right through the first power source), Y (adjusting the position of the front and rear adjustment block 13 on the front and rear adjustment screw 15), and Z (adjusting the position of the upper and lower adjustment block 6 on the upper and lower adjustment screw 8), with an adjustment range of X: ±50mm; Y: ±50mm; Z: 0-100mm, and an angle of 3°. The probe clamping device should be able to adjust the probe incident angle, with an adjustment range of A and B angles of 30°, and an adjustment minimum step of 0.5°. The mobile mounting head device is made of 304 stainless steel or other corrosion-resistant materials and should have sufficient rigidity. The near-surface detection flaw detection components 31 are horizontally arranged side by side, and each probe has an independent adjustment function, which can meet the adjustment range of X: ±50mm; Y: ±50mm; Z: 0-100mm. The probe clamping device can adjust the probe incident angle, and the adjustment range of A and B angles is 30°. The adjustment range of the flaw detection component 31 can meet the accuracy of workpiece adjustment. There are several V-grooved plates at the bottom of the water tank 2; a display screen is set up in the detection area of ​​the water tank 2 to facilitate parameter adjustment. The material frame is placed near the water tank 2. The material frame design takes into account the principles of convenient material retrieval and no frequent replacement. If the on-site material frame does not meet the use requirements, the supplier will design the material frame independently. In the material frame, the distances of V-grooves of different specifications are different, and the V-grooves need to be replaced. The laser marking machine is used to mark the qualified status of the bar material.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bar flaw detection device, characterized in that: It comprises a base (1), a roller assembly, a moving assembly, a moving mounting head device, and a flaw detection assembly (31); A water tank (2) is provided in the base (1), a roller assembly is arranged in the water tank (2), the roller assembly is arranged on the base (1), and a movable mounting head device is arranged on the movable assembly; the flaw detection assembly (31) is arranged at the end of the movable mounting head device; The roller assembly comprises a first roller (28), a second roller (29), a second power source, and a support seat (30). The two support seats (30) are arranged in a groove of the base (1). Both ends of the first roller (28) and the second roller (29) are rotatably arranged on the support seat (30). The two second power sources respectively drive the first roller (28) and the second roller (29) to rotate.

2. A bar flaw detection device according to claim 1, characterized in that: The moving assembly comprises a sliding rod (3), the sliding rod (3) is arranged on a base (1), a moving mounting head device is slidably arranged on the sliding rod (3), and a first power source is arranged on the base (1), and the first power source can push the moving mounting head device to slide along the sliding rod (3).

3. A bar flaw detection device according to claim 2, characterized in that: The mobile mounting head device comprises a sliding block (4), an up and down adjustment device, a front and back adjustment device, and an angle adjustment device; The sliding block (4) is slidably arranged on the sliding rod (3), and the first power source can push the sliding block (4) to move along the sliding rod (3); The up-and-down adjustment device is installed on the sliding block (4), and the front-and-rear adjustment device and the angle adjustment device are arranged below the up-and-down adjustment device in sequence.

4. A bar flaw detection device according to claim 1, characterized in that: The up-and-down adjustment device comprises an up-and-down adjustment component and an up-and-down mounting plate (5), and a plurality of up-and-down adjustment components are arranged on the sliding block (4) via bolts of the up-and-down mounting plate (5); The up-down adjustment assembly comprises an up-down adjustment block (6), an up-down adjustment end plate (7), an up-down adjustment screw rod (8), an up-down slide rod (9), and an up-down locking plate (10). The up-down adjustment block (6) is fixedly arranged on the slide block (4). Two up-and-down adjustment end plates (7) are arranged on both sides of an up-and-down slide rod (9); an up-and-down adjustment screw rod (8) is rotatably arranged on the up-and-down adjustment end plates (7); two up-and-down slide rods (9) are arranged on both sides of the up-and-down adjustment screw rod (8); and a first hand wheel (11) is arranged at the end of the up-and-down adjustment screw rod (8); an up-and-down adjustment block (6) is threadedly arranged on the up-and-down adjustment screw rod (8), and the up-and-down adjustment block (6) is slidably arranged on the up-and-down slide rod (9).

5. A bar flaw detection device according to claim 4, characterized in that: The upper and lower locking plates (10) are provided with first mounting through holes, and the upper and lower mounting plates (5) are provided with second mounting through holes corresponding to the first mounting through holes; The upper and lower mounting plates (5) are connected to the upper and lower locking plates (10) via first locking bolts (12).

6. A bar flaw detection device according to claim 1, characterized in that: The front-to-back adjustment device includes a front-to-back adjustment component, and a plurality of front-to-back adjustment components are arranged at the bottom of the upper and lower adjustment components; The front-to-back adjustment assembly comprises a front-to-back adjustment block (13), a front-to-back adjustment end plate (14), a front-to-back adjustment screw rod (15), a front-to-back sliding rod (16), and a front-to-back locking plate (17). The front-to-back locking plate (17) is bolted at the bottom of the upper and lower adjustment assembly. Two front and rear adjustment end plates (14) are arranged on both sides of the front and rear slide bars (16); the front and rear adjustment screw rods (15) are rotatably arranged on the front and rear adjustment end plates (14); the two front and rear slide bars (16) are arranged on both sides of the front and rear adjustment screw rods (15); and a second hand wheel (18) is arranged at the end of the front and rear adjustment screw rods (15); the front and rear adjustment blocks (13) are threadedly arranged on the upper and lower adjustment screw rods (8), and the front and rear adjustment blocks (13) are slidably arranged on the front and rear slide bars (16).

7. A bar flaw detection device according to claim 1, characterized in that: The angle adjustment device includes a plurality of angle adjustment components, and the plurality of angle adjustment components are arranged below the front and rear adjustment devices; The angle adjustment component comprises an angle adjustment plate (19), an angle scale plate (20), an angle adjustment needle (21), a connecting rod component, and a supporting component; The angle adjustment plate (19) is arranged below the front and rear adjustment device; A convex block (22) is provided on the angle adjustment plate (19), and the angle adjustment needle (21) is rotatably arranged on the convex block (22) through a first rotating rod; a second locking bolt is provided at the bottom of the convex block (22).

8. A bar flaw detection device according to claim 1, characterized in that: The angle scale plate (20) is arranged on the angle adjustment plate (19), and the position of the angle adjustment needle (21) corresponds to the position of the angle scale plate (20); A connecting rod assembly is provided at the end of the first rotating rod; a second rotating rod is provided at the other end of the connecting rod assembly, the second rotating rod is rotatably arranged on the angle adjustment plate (19), and the supporting assembly is fixedly arranged at the end of the second rotating rod; The supporting assembly comprises an L-shaped supporting plate (27), the vertical end of the L-shaped supporting plate (27) is arranged on one side of the second rotating rod, and the horizontal end of the L-shaped supporting plate (27) is provided with a flaw detection installation hole for allowing the flaw detection assembly (31) to pass through.

9. A bar flaw detection device according to claim 8, characterized in that: The connecting rod assembly comprises a first connecting rod (23), a second connecting rod (24), a first vertical rod (25), and a second vertical rod (26); The middle portion of the first connecting rod (23) is connected to the first rotating rod, and the middle portion of the second connecting rod (24) is connected to the second rotating rod; One end of the first vertical rod (25) is rotatably connected to the first connecting rod (23), and the other end of the first vertical tube is rotatably connected to the other end of the second connecting rod (24); One end of the second vertical rod (26) is rotatably connected to the first connecting rod (23), and the other end of the second vertical rod (26) is rotatably connected to the other end of the second connecting rod (24).

10. A bar flaw detection device according to claim 1, characterized in that: The first roller (28) and the second roller (29) rotate in opposite directions.

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