Defect detection device for metal bar

Abstract

The invention discloses a metal bar defect detection device, comprising: a support frame horizontally arranged on the ground; the sliding table is horizontally and slidably connected to the middle position of the supporting frame; the eddy current detection probe is fixed on the sliding table and allows the metal bar to penetrate through; the transmission rollers are horizontally and rotationally connected to the supporting frame and distributed on the two sides of the sliding table; the conveying mechanism comprises a stand column, a suspension frame and a conveying wheel, the stand column is vertically arranged on the supporting frame, the suspension frame is horizontally arranged on the stand column, and the conveying wheel is rotationally connected to the suspension frame and used for pressing the upper end face of the metal bar and intermittently conveying the metal bar; the marking mechanisms are arranged on the two sides of the sliding table and used for marking the defect positions of the metal bars. According to the invention, the conveying mechanism capable of intermittently conveying the metal bars is arranged and is matched with the sliding type eddy current detection probe, so that automatic detection of surface defects of the metal bars is realized, manual handheld operation is not needed, and the detection convenience and the detection efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the field of metal bar detection, and in particular to a metal bar defect detection device. Background Art

[0002] Defect detection of metal bars is a key step in ensuring product quality and safety. Eddy current testing is a non-destructive detection technology widely used in surface and near-surface defect detection of metal materials. It is based on the principle of electromagnetic induction and detects defects in materials by generating eddy currents in conductive materials and analyzing the changes in these eddy currents.

[0003] In traditional eddy current testing, if the material is uniform and free of defects, the size and distribution of the eddy currents will be constant. However, when defects (such as cracks, corrosion, inclusions, etc.) are present in the material, the resistivity along the eddy current path changes, thereby altering the size and distribution of the eddy currents. These changes can be measured by instruments connected to the coils and converted into visual signals for analysis.

[0004] Currently, when performing eddy current testing on metal bars, workers usually move a handheld detection probe across the surface of the metal bar and use visual signals to determine whether the metal bar has defects. When the metal bar is relatively long, the worker needs to keep walking, which makes the testing process very inconvenient and affects the convenience of detection. This needs to be improved. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a defect detection device for metal bars, which has the effect of improving the convenience of detection.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A defect detection device for metal bars, comprising: The support frame is horizontally arranged on the ground; A slide, horizontally slidably connected to the middle position of the support frame; An eddy current detection probe is fixed on the slide and is provided for the metal bar to pass through horizontally; Transmission rollers are horizontally rotatably connected to the support frame and are distributed on both sides of the slide and are used to support metal bars; The conveying mechanism includes a column, a suspension, and a conveying wheel, wherein the column is vertically arranged on the support frame, the suspension is horizontally arranged on the column, and the conveying wheel is rotatably connected to the suspension and is used to press the upper end surface of the metal bar and intermittently convey the metal bar; The marking mechanism is arranged on both sides of the slide and is used to mark the defect position of the metal bar.

[0007] In a preferred example, the present invention can be further configured as follows: the marking mechanism includes a positioning plate, a marking rod, a seal and a driving mechanism; the positioning plate is vertically arranged on the support frame and distributed on both sides of the slide and is used to block the two ends of the eddy current detection probe; a sliding hole for metal bars to pass through is provided on the positioning plate; a plurality of the marking rods are vertically slidably connected to the positioning plate and are located in the sliding holes; the seal is arranged at the lower end of the marking rod; and the driving mechanism is used to control the synchronous sliding of the plurality of marking rods.

[0008] In a preferred example, the present invention can be further configured as follows: the driving mechanism includes a driving plate, a handle and a cylinder, the driving plate is connected to the positioning plate in a circular rotation, a driving rod is horizontally arranged on the driving plate, and a circular arc-shaped driving hole is provided on the marking rod for the driving rod to slide, the handle is arranged on the outer wall of the driving plate and passes through the positioning plate, the cylinder is rotationally connected to the outer wall of the positioning plate, and the piston rod is positionally rotationally connected to the handle.

[0009] In a preferred example, the present invention can be further configured as follows: the seal is arranged in an arrow shape, and the seals located on both sides of the slide are oriented in opposite directions.

[0010] In a preferred example, the present invention can be further configured as follows: a cleaning mechanism for metal rods to pass through is provided at the front end of the support frame, the cleaning mechanism includes a cleaning seat, a cleaning pool, a cleaning cover, a cleaning pipe and a cleaning support, the cleaning seat is provided on the ground, the cleaning pool is embedded in the cleaning seat, the cleaning cover is buckled on the cleaning seat, and covers the cleaning pool and allows metal rods to pass through, one end of the cleaning pipe is connected to the cleaning pool, and the other end is located at the top of the cleaning cover, the cleaning support is provided at the front and rear ends of the cleaning cover, and is respectively used to support and clean the outer wall of the metal rod.

[0011] In a preferred example, the present invention can be further configured as follows: the cleaning support includes a pair of lower seats, a lower wheel frame, a pair of lower cleaning wheels, an upper seat, an upper wheel frame and an upper cleaning wheel, a pair of the lower seats are distributed on both sides of the cleaning cover, the lower wheel frame is arranged on the lower seat and extends into the cleaning cover, the lower cleaning wheel is rotatably connected to the lower wheel frame, is located in the cleaning cover, and is used to support metal rods, the upper seat is arranged on the cleaning cover, the upper wheel frame is arranged on the upper seat and extends into the cleaning cover, the upper cleaning wheel is rotatably connected to the upper wheel frame, is located in the cleaning cover, and is used to press the metal rods.

[0012] In a preferred example, the present invention can be further configured as follows: the middle position of the lower wheel frame is rotatably connected to the lower seat, the end of the lower seat opposite to the lower seat is provided with a guide rod passing through the wheel frame, the guide rod is provided with a spring located above the lower wheel frame, the middle position of the upper wheel frame is rotatably connected to the upper seat, the cleaning seat is rotatably connected to a hydraulic cylinder, and the piston rod of the hydraulic cylinder is rotatably connected to the end of the upper wheel frame.

[0013] In a preferred example, the present invention can be further configured as follows: a pair of lower seats are laterally slidably connected to the cleaning seat, a screw is horizontally threadedly connected to the cleaning seat, and the screw is rotatably connected to the end of the lower seat.

[0014] In a preferred example, the present invention can be further configured as follows: a flushing seat is provided behind the cleaning seat, a flushing pool is embedded in the flushing seat, a flushing cover for covering the flushing pool is buckled on the flushing seat, a flushing pipe is connected to the flushing pool, and the flushing pipe is connected to the top of the flushing cover.

[0015] In a preferred example, the present invention can be further configured as follows: a drying seat is provided behind the washing seat, and a drying cover for the metal rods to pass through is provided on the drying seat.

[0016] In summary, the present invention has the following beneficial effects: 1. By setting up a conveying mechanism that can intermittently transport metal bars and cooperating with a sliding eddy current detection probe, automatic detection of surface defects of metal bars can be achieved without manual handheld operation, thus improving detection convenience and efficiency; 2. By setting a marking mechanism on the support frame, it is possible to mark both sides of the defect position of the metal bar, making it easier to grasp the defect position when using the metal bar later; 3. By setting up a cleaning mechanism that can clean the surface of the metal bar, the cleanliness of the metal bar surface is ensured, which facilitates the eddy current detection probe to perform accurate detection and improves the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an embodiment; Figure 2 1 is a schematic structural diagram of a conveying mechanism of an embodiment; Figure 3 is a schematic structural diagram of a marking mechanism of an embodiment; Figure 4 2. It is a structural diagram of the cleaning mechanism of the embodiment; Figure 5 2 is a schematic structural diagram of a drying stand according to an embodiment.

[0018] Reference numerals: 1, support frame; 2, slide; 3, eddy current detection probe; 4, transmission roller; 5, conveying mechanism; 51, column; 52, suspension; 53, conveying wheel; 6, marking mechanism; 61, positioning plate; 62, marking rod; 63, seal; 64, sliding hole; 7, driving mechanism; 71, driving plate; 72, handle; 73, cylinder; 74, driving rod; 76, driving hole; 8, cleaning mechanism; 81, cleaning seat; 82 , cleaning tank; 83, cleaning hood; 84, cleaning pipe; 85, cleaning support; 851, lower seat; 852, lower wheel frame; 853, lower cleaning wheel; 854, upper seat; 855, upper wheel frame; 856, upper cleaning wheel; 857, guide rod; 8571, spring; 858, hydraulic cylinder; 859, screw; 86, flushing seat; 87, flushing tank; 88, flushing hood; 89, flushing pipe; 9, drying seat; 91, drying hood. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 As shown, a defect detection device for metal bars includes a support frame 1, a slide 2, an eddy current detection probe 3, a transmission roller 4, a conveying mechanism 5 and a marking mechanism 6.

[0021] like Figure 1 、 Figure 2 As shown, a support frame 1 is horizontally mounted on the ground, with a slide 2 connected to the center of the support frame 1 for horizontal sliding. An eddy current probe 3 is fixed to the slide 2 and allows the metal bar to pass horizontally through it. Drive rollers 4 are horizontally connected to the support frame 1 and are located on both sides of the slide 2 to support the metal bar.

[0022] like Figure 1 、 Figure 2 As shown, the conveying mechanism 5 includes a column 51, a suspension 52, and a conveying wheel 53. The column 51 is vertically arranged on the support frame 1, and the suspension 52 is horizontally arranged on the column 51. The conveying wheel 53 is rotatably connected to the suspension 52 and is used to press the upper end surface of the metal bar and intermittently convey the metal bar.

[0023] like Figure 2 、 Figure 3 As shown, the marking mechanism 6 is arranged on both sides of the slide 2 and is used to mark the defect position of the metal bar. The marking mechanism 6 includes a positioning plate 61, a marking rod 62, a seal 63 and a driving mechanism 7.

[0024] like Figure 2 、 Figure 3As shown, positioning plates 61 are vertically mounted on the support frame 1 and are located on both sides of the slide 2, and are used to block both ends of the eddy current detection probe 3. The positioning plates 61 are provided with sliding holes 64 for metal bars to pass through. A plurality of marking rods 62 are vertically slidably connected to the positioning plates 61 and located within the sliding holes 64. Seals 63 are located at the lower ends of the marking rods 62. The seals 63 are arranged in an arrow shape, and the seals 63 on both sides of the slide 2 face each other.

[0025] like Figure 2 、 Figure 3 As shown, the driving mechanism 7 is used to control the synchronous sliding of multiple marking rods 62, and the driving mechanism 7 includes a driving plate 71, a handle 72 and a cylinder 73.

[0026] like Figure 2 、 Figure 3 As shown, a drive plate 71 is rotatably connected to the positioning plate 61 in an annular shape. A drive rod 74 is horizontally mounted on the drive plate 71. The marking rod 62 is provided with an arc-shaped drive hole 76 for the sliding movement of the drive rod 74. A handle 72 is mounted on the outer wall of the drive plate 71 and extends through the positioning plate 61. A cylinder 73 is rotatably connected to the outer wall of the positioning plate 61, and its piston rod is rotatably connected to the handle 72.

[0027] When defects of the metal bar need to be detected, the metal bar is placed horizontally on the transmission roller 4, and then the conveying wheel 53 on the suspension 52 presses the metal bar, and the cooperation of the conveying wheel 53 and the transmission roller 4 is used to realize the movement control of the metal bar.

[0028] At this time, the metal bar passes through the eddy current detection probe 3, and then the metal bar stops being transported. Then the slide 2 is controlled to drive the eddy current detection probe 3 to slide, so that the eddy current detection probe 3 respectively contacts the positioning plates 61 on both sides. At this time, the eddy current detection probe 3 is used to detect this section of position.

[0029] When there is a defect on the metal bar, the cylinder 73 drives the handle 72 to rotate, and the handle 72 drives the drive plate 71 to move synchronously. At this time, under the cooperation of the drive rod 74 and the drive hole 76, the multiple marking rods 62 slide outward synchronously. At the same time, the seal 63 on the marking rod 62 contacts the surface of the metal bar, and a mark is printed on the surface of the metal bar, which makes it convenient to grasp the defect location when the metal bar is used later.

[0030] Then the control handle 72 is rotated in the opposite direction to make all the marking rods 62 retract, and then the metal bar is controlled to continue to be transported backward a distance to realize the detection of the next position, and the process is repeated in sequence to complete the defect detection of the entire metal bar.

[0031] Therefore, by setting up a conveying mechanism 5 that can intermittently transport metal bars and cooperating with a sliding eddy current detection probe 3, automatic detection of surface defects of metal bars can be achieved without manual handheld operation, thereby improving detection convenience and efficiency.

[0032] like Figure 1 、 Figure 4 As shown, a cleaning mechanism 8 for metal bars to pass through is provided at the front end of the support frame 1 , and the cleaning mechanism 8 includes a cleaning seat 81 , a cleaning tank 82 , a cleaning cover 83 , a cleaning pipe 84 and a cleaning support 85 .

[0033] like Figure 4 、 Figure 5 As shown, a cleaning seat 81 is arranged on the ground, a cleaning pool 82 is embedded in the cleaning seat 81, a cleaning cover 83 is buckled on the cleaning seat 81, and the cover is provided with the cleaning pool 82, and metal bars are passed through. One end of a cleaning pipe 84 is connected to the cleaning pool 82, and the other end is located at the top of the cleaning cover 83.

[0034] like Figure 4 、 Figure 5 As shown, the cleaning supports 85 are provided at the front and rear ends of the cleaning cover 83 and are used to carry and clean the outer wall of the metal bar respectively.

[0035] like Figure 4 、 Figure 5 As shown, a flushing seat 86 is provided behind the cleaning seat 81, and a flushing pool 87 is embedded in the flushing seat 86. A flushing cover 88 covering the flushing pool 87 is buckled on the flushing seat 86, and a flushing pipe 89 is connected to the flushing pool 87, and the flushing pipe 89 is connected to the top of the flushing cover 88.

[0036] like Figure 4 、 Figure 5 As shown, a drying seat 9 is provided behind the washing seat 86, and a drying cover 91 for the metal rod to pass through is provided on the drying seat 9.

[0037] When the outer wall of the metal bar is to be cleaned, the metal bar enters the cleaning cover 83 and is clamped by the cleaning support 85. At this time, the cleaning pipe 84 sprays the cleaning liquid in the cleaning tank 82 onto the outer wall of the metal bar and cooperates with the work of the cleaning support 85 to achieve the cleaning of the outer wall of the metal bar. At the same time, the cleaning liquid can be recycled and reused to reduce waste.

[0038] The metal bar then enters the flushing hood 88, and the flushing pipe 89 sprays the flushing liquid in the flushing tank 87 onto the outer wall of the metal bar, thereby flushing the outer wall of the metal bar and ensuring the cleanliness of the outer wall of the metal bar. At the same time, the flushing liquid can be recycled and reused to reduce waste.

[0039] Finally, the metal bar enters the drying seat 9, at which time the drying seat 9 covers the metal bar. Electric heating or air drying is used to dry the metal bar to ensure the cleanliness of the metal bar surface and avoid affecting the subsequent inspection.

[0040] like Figure 4 、 Figure 5 As shown, the cleaning support 85 includes a pair of lower seats 851 , a lower wheel frame 852 , a pair of lower cleaning wheels 853 , an upper seat 854 , an upper wheel frame 855 and an upper cleaning wheel 856 .

[0041] like Figure 4 、 Figure 5 As shown, a pair of lower seats 851 are distributed on both sides of the cleaning cover 83, and a lower wheel frame 852 is provided on the lower seat 851 and extends into the cleaning cover 83. The lower cleaning wheel 853 is rotatably connected to the lower wheel frame 852 and is located in the cleaning cover 83 and is used to support metal bars.

[0042] like Figure 4 、 Figure 5 As shown, upper seat 854 is arranged on cleaning cover 83, and upper wheel frame 855 is arranged on upper seat 854, and extends into cleaning cover 83. Upper cleaning wheel 856 is rotatably connected to upper wheel frame 855, and is positioned in cleaning cover 83, and is used for compacting metal bar stock.

[0043] like Figure 4 、 Figure 5 As shown, the middle position of the lower wheel frame 852 is rotatably connected to the lower seat 851, and a guide rod 857 that passes through the wheel frame is provided at the opposite end of the lower seat 851, and a spring 8571 located above the lower wheel frame 852 is sleeved on the guide rod 857.

[0044] like Figure 4 、 Figure 5 As shown, the middle position of the upper wheel frame 855 is rotatably connected to the upper seat 854 , the cleaning seat 81 is rotatably connected to a hydraulic cylinder 858 , and the piston rod of the hydraulic cylinder 858 is rotatably connected to the end of the upper wheel frame 855 .

[0045] When cleaning the outer wall of a metal bar, as the metal bar enters, it pushes the lower wheel frame 852 and the lower cleaning wheel 853 downward, compressing the lower wheel frame 852's squeezing spring 8571. When the metal bar leaves the lower wheel frame 852, the spring 8571 automatically flips the lower wheel frame 852 and the lower cleaning wheel 853 back to their initial positions. This allows the lower wheel frame 852 and the lower cleaning wheel 853 to automatically adapt to metal bars of different sizes, constantly pressing against the metal bar surface for stable cleaning.

[0046] At the same time, when the metal bar enters, the hydraulic cylinder 858 is first used to control the upper wheel frame 855 and the upper cleaning wheel 856 to flip upward. When the metal bar enters, the upper wheel frame 855 and the upper cleaning wheel 856 are controlled to flip downward, so that the upper cleaning wheel 856 presses the surface of the metal bar, so that the upper wheel frame 855 and the upper cleaning wheel 856 can automatically adapt to metal bars of different specifications, and always press the surface of the metal bar to achieve stable cleaning.

[0047] like Figure 4 、 Figure 5 As shown, a pair of lower seats 851 are laterally slidably connected to the cleaning seat 81, and a screw 859 is horizontally threadedly connected to the cleaning seat 81, and the screw 859 is rotatably connected to the end of the lower seat 851. Therefore, the distance between the pair of lower seats 851 can be controlled according to the diameter specifications of the metal bar and actual needs to meet different working requirements.

[0048] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A defect detection device for metal bars, characterized in that: include: A support frame (1) is horizontally arranged on the ground; A slide (2) is horizontally slidably connected to the middle position of the support frame (1); An eddy current detection probe (3) is fixed on the slide (2) and is provided for the metal bar to pass through horizontally; Transmission rollers (4) are horizontally rotatably connected to the support frame (1) and are distributed on both sides of the slide (2) and are used to support metal bars; The conveying mechanism (5) comprises a column (51), a suspension (52) and a conveying wheel (53), wherein the column (51) is vertically arranged on the support frame (1), the suspension (52) is horizontally arranged on the column (51), and the conveying wheel (53) is rotatably connected to the suspension (52) and is used to press the upper end surface of the metal bar and intermittently convey the metal bar; The marking mechanism (6) is arranged on both sides of the slide (2) and is used to mark the defect position of the metal bar.

2. The metal bar defect detection device according to claim 1, characterized in that: The marking mechanism (6) includes a positioning plate (61), a marking rod (62), a seal (63) and a driving mechanism (7). The positioning plate (61) is vertically arranged on the support frame (1) and distributed on both sides of the slide (2), and is used to block the two ends of the eddy current detection probe (3). The positioning plate (61) is penetrated by a sliding hole (64) for the metal bar to pass through. The plurality of marking rods (62) are vertically slidably connected to the positioning plate (61) and are located in the sliding hole (64). The seal (63) is arranged at the lower end of the marking rod (62). The driving mechanism (7) is used to control the synchronous sliding of the plurality of marking rods (62).

3. The metal bar defect detection device according to claim 2, characterized in that: The driving mechanism (7) includes a driving plate (71), a handle (72) and a cylinder (73); the driving plate (71) is connected to the positioning plate (61) in an annular rotation manner; a driving rod (74) is horizontally arranged on the driving plate (71); the marking rod (62) is provided with an arc-shaped driving hole (76) for the driving rod (74) to slide; the handle (72) is arranged on the outer wall of the driving plate (71) and passes through the positioning plate (61); the cylinder (73) is rotationally connected to the outer wall of the positioning plate (61), and the piston rod is positionally rotationally connected to the handle (72).

4. The metal bar defect detection device according to claim 2, characterized in that: The seal (63) is arranged in an arrow shape, and the seals (63) located on both sides of the slide (2) are oriented in opposite directions.

5. The metal bar defect detection device according to claim 1, characterized in that: A cleaning mechanism (8) for metal bars to pass through is provided at the front end of the support frame (1). The cleaning mechanism (8) comprises a cleaning seat (81), a cleaning pool (82), a cleaning cover (83), a cleaning pipe (84) and a cleaning support (85). The cleaning seat (81) is provided on the ground, the cleaning pool (82) is embedded in the cleaning seat (81), the cleaning cover (83) is buckled on the cleaning seat (81), and covers the cleaning pool (82) and allows the metal bars to pass through. One end of the cleaning pipe (84) is connected to the cleaning pool (82), and the other end is located at the top of the cleaning cover (83). The cleaning support (85) is provided at the front and rear ends of the cleaning cover (83) and is used for carrying and cleaning the outer wall of the metal bars respectively.

6. The metal bar defect detection device according to claim 5, characterized in that: The cleaning support (85) includes a pair of lower seats (851), a lower wheel frame (852), a pair of lower cleaning wheels (853), an upper seat (854), an upper wheel frame (855) and an upper cleaning wheel (856). The pair of lower seats (851) are distributed on both sides of the cleaning cover (83). The lower wheel frame (852) is arranged on the lower seat (851) and extends into the cleaning cover (83). The lower cleaning wheel (853) rotates The upper wheel (856) is connected to the lower wheel frame (852), is located in the cleaning cover (83), and is used to support the metal bar stock. The upper seat (854) is arranged on the cleaning cover (83). The upper wheel frame (855) is arranged on the upper seat (854) and extends into the cleaning cover (83). The upper cleaning wheel (856) is rotatably connected to the upper wheel frame (855), is located in the cleaning cover (83), and is used to press the metal bar stock.

7. The metal bar defect detection device according to claim 6, characterized in that: The middle position of the lower wheel frame (852) is rotatably connected to the lower seat (851), and a guide rod (857) passing through the wheel frame is provided at the opposite end of the lower seat (851). The guide rod (857) is provided with a spring (8571) located above the lower wheel frame (852). The middle position of the upper wheel frame (855) is rotatably connected to the upper seat (854). A hydraulic cylinder (858) is rotatably connected to the cleaning seat (81), and the piston rod of the hydraulic cylinder (858) is rotatably connected to the end of the upper wheel frame (855).

8. The metal bar defect detection device according to claim 7, characterized in that: A pair of lower seats (851) are connected to the cleaning seat (81) in a transverse sliding manner. A screw rod (859) is horizontally threadedly connected to the cleaning seat (81), and the screw rod (859) is rotatably connected to the end of the lower seat (851).

9. The metal bar defect detection device according to claim 8, characterized in that: A flushing seat (86) is provided at the rear of the cleaning seat (81), a flushing pool (87) is embedded in the flushing seat (86), a flushing cover (88) for covering the flushing pool (87) is buckled on the flushing seat (86), a flushing pipe (89) is connected to the flushing pool (87), and the flushing pipe (89) is connected to the top of the flushing cover (88).

10. The metal bar defect detection device according to claim 9, characterized in that: A drying seat (9) is provided at the rear of the flushing seat (86), and a drying cover (91) for metal rods to pass through is provided on the drying seat (9).

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