Seamless steel tube surface detection device and use method thereof

Abstract

The invention discloses a seamless steel tube surface detection device and a use method thereof.The seamless steel tube surface detection device comprises a box body, a feeding frame is fixed to the top of the box body, a plurality of semicircular grooves are formed in the top of the feeding frame, steel tube bodies are arranged in the semicircular grooves, and an arc-shaped buffer groove is formed in one side of the top of the feeding frame; the invention relates to the technical field of steel pipe detection. According to the seamless steel pipe surface detection device and the use method thereof, through the arrangement of the stepping feeding mechanism, step-by-step rightward feeding movement of a steel pipe body is achieved, the steel pipe body in a semicircular groove is jacked up and then moved rightwards by one grid every time, finally, the steel pipe body is moved into an arc-shaped buffer groove, and the steel pipe body rolls back and forth; meanwhile, the flaw detector is started to uniformly detect the surfaces of the steel pipe bodies, manual detection operation is not needed in the whole process, the automation degree is high, the step-by-step automatic detection function of the multiple steel pipe bodies is achieved, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe detection, in particular to a seamless steel pipe surface detection device and a use method thereof. Background Art

[0002] Precision steel pipes need to undergo surface flaw detection before leaving the factory. After the test, it will be checked whether there are internal defects inside the steel pipe to ensure the quality of the steel pipe. The traditional testing method requires the cooperation of multiple staff members. The steel pipe placed on the bracket is rotated manually at a uniform speed, and another operator holds a handheld flaw detector to keep its position unchanged and performs flaw detection on the surface of an annular surface of the steel pipe. After the steel pipe of a scanning length is inspected, the handheld operator moves a scanning distance and scans the next annular surface until the surface of the entire steel pipe is inspected, and then the next steel pipe is inspected.

[0003] The existing traditional manual inspection method has low efficiency, time-consuming and labor-intensive. In addition, the surface of seamless steel pipes is usually smooth, and reflection is easy to occur when using laser flaw detectors for inspection. When light is irradiated to the surface of the steel pipe, the reflected light may cover up some minor defects on the surface of the steel pipe, such as shallow scratches and slight color unevenness. In this regard, we propose a seamless steel pipe surface inspection device and its use method to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a surface detection device for a seamless steel pipe and a method for using the same, which solve the problems raised in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a seamless steel pipe surface detection device, comprising a box body, a feeding rack is fixed on the top of the box body, a plurality of semicircular grooves are opened on the top of the feeding rack, a steel pipe body is arranged in the semicircular groove, an arc-shaped buffer groove is opened on one side of the top of the feeding rack, and a stepping feeding mechanism is arranged in the box body to drive the steel pipe body to gradually move into the arc-shaped buffer groove;

[0006] The step feeding mechanism includes a rotating rod rotatably connected between the inner walls of the box body, a motor 1 is fixed to one side of the box body, the motor 1 drives the rotating rod to rotate, a cam 1 is fixed on the rotating rod, and a missing tube is also fixed on the rotating rod, two fixed plates are fixed on one side of the inner wall of the box body, a cross rod is slidably connected between the inner surfaces of the two fixed plates, a U-shaped plate is fixed at one end of the cross rod, a roller is rotatably connected between the inner walls of the U-shaped plates, the roller rolls on one side of the missing tube, a circular plate is fixed on the cross rod, a spring 1 is fixed between one side of the circular plate and one of the fixed plates, a bottom plate is fixed to the bottom end of the cross rod, the outer surface of the cam 1 contacts and squeezes the bottom of the bottom plate, a moving seat is fixed on the top of the cross rod, and a plurality of supporting grooves are provided on the moving seat.

[0007] Preferably, the feed rack is also provided with a detection and collection component for performing flaw detection on the surface of the steel pipe body and collecting qualified products separately from defective products, the detection and collection component includes an L-shaped plate fixed to one side of the feed rack, a flaw detector is installed on the L-shaped plate, a cross plate is fixed to one side of the L-shaped plate, a rack is slidably connected to the top of the cross plate, and a gear is rotatably connected to one side of the L-shaped plate, and the gear is meshed with the rack.

[0008] Preferably, folding rods are fixed on both sides of the rack, push plates are fixed on the two folding rods, a rotating shaft is fixed on the gear, motor 2 is fixed on one side of the L-shaped plate, pulley 1 is fixed on the output end of motor 2 and one end of the rotating shaft, the two pulleys 1 are connected through a belt transmission, collection box 1 is fixed on one side of the feeding rack, and collection box 2 is fixed on the other side of the feeding rack.

[0009] Preferably, U-shaped frames are fixed on both sides of the feeding rack, a feeding box is fixed between the opposite sides of the two U-shaped frames, a mounting plate is fixed on the top of the feeding rack, a cylinder is fixed on one side of the mounting plate, the output end of the cylinder passes through the mounting plate and extends to one side of the mounting plate, a connecting plate is fixed to the output end of the cylinder, a paint board is fixed on the feeding rack through four vertical plates, and the bottom of the paint board is coated with water-based matte emulsion.

[0010] Preferably, an intermittent coating unit for intermittently applying paint to the bottom of the paint board is provided on one side of the feed rack, and the intermittent coating unit includes an L-shaped frame fixed on one side of the feed rack, and one side of the L-shaped frame is rotatably connected to a cross bar, and pulley 2 is fixed on both the cross bar and the rotating rod, and the two pulleys 2 are connected by belt 2 transmission.

[0011] Preferably, a cam 2 is fixed to one end of the cross bar, an L-shaped seat is fixed to one side of the feeding rack, the inner surface of the L-shaped seat is slidably connected to a sliding rod, one end of the sliding rod is fixed to a U-shaped seat, a coating roller is rotatably connected between the inner walls of the U-shaped seat, and the outer surface of the coating roller is in rolling contact with the bottom of the paint plate.

[0012] Preferably, a baffle is fixed to the other end of the slide rod, a second spring is fixed between one side of the baffle and one side of the L-shaped seat, the second spring is sleeved on the slide rod, and the outer surface of the second cam is in contact and extrusion with one side of the baffle.

[0013] The present invention also discloses a method for using a seamless steel pipe surface detection device, which specifically comprises the following steps:

[0014] Step 1, put the steel pipe body to be tested into the material box, the bottom steel pipe body falls onto the feeding rack, start the cylinder, so that the cylinder pushes the steel pipe body to roll into the semicircular groove, start the motor 1, the motor 1 drives the rotating rod, the cam 1, and the missing barrel to rotate, and then the roller rolls on one side of the missing barrel when the missing barrel rotates. Due to the width difference on one side of the missing barrel, the roller drives the cross rod to move back and forth left and right, and at the same time, when the cam 1 rotates, it drives the bottom plate to move up and down, and then drives the moving seat to lift the steel pipe body upward, and then move the steel pipe body to the right and then fall to the left to reset, repeat the steps of supporting and moving materials to realize step feeding, and move the steel pipe body into the arc buffer groove;

[0015] Step 2: The steel pipe body rolls back and forth in the arc-shaped buffer groove. During this process, the flaw detector is started to emit a laser to illuminate the steel pipe body, and multiple holograms of the surface of the steel pipe body are recorded. The computer analyzes and compares the multiple holograms. If there are defects on the surface of the object, its surface deformation will be different, thereby reflecting the defect information. If there are no defects on the surface of the steel pipe body, start the second motor to rotate forward, the second motor drives the gear to rotate, the gear drives the rack to move forward, and then the rear push plate pushes the steel pipe body forward, and pushes the steel pipe body into the collection box one. If there are defects on the surface of the steel pipe body, start the second motor to rotate reversely, thereby driving the rack to move backward, and then the front push plate pushes the steel pipe body backward into the collection box two;

[0016] Step three, when the rotating rod rotates, it drives the cross bar to rotate synchronously through the pulley two and the belt two, which in turn drives the cam two to rotate, which in turn drives the baffle to move intermittently in the front and rear directions, which in turn drives the coating roller to roll at the bottom of the paint plate, so that the bottom of the paint plate is always kept full of paint, and in the process of lifting and feeding the steel pipe body, after the surface of the steel pipe body contacts the bottom of the paint plate, the steel pipe body and the bottom of the paint plate roll, and then the paint is evenly applied to the steel pipe body, and then in the process of laser flaw detection, the surface of the steel pipe body is produced with microscopic roughness, which changes the reflection mode of light, effectively reduces reflection, and improves detection accuracy.

[0017] Beneficial Effects

[0018] The present invention provides a seamless steel pipe surface detection device and a method for using the same. Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) Through the setting of the step-by-step feeding mechanism, the steel pipe body is gradually moved to the right by step-by-step feeding. Each time, the steel pipe body in the semicircular groove is lifted up and moved one grid to the right. Finally, the steel pipe body is moved into the arc buffer groove, so that the steel pipe body rolls back and forth. At the same time, the flaw detector is started to uniformly detect the surface of the steel pipe body. No manual inspection operation is required throughout the process. The degree of automation is high, so that multiple steel pipe bodies can realize the function of step-by-step automatic inspection, which greatly improves the inspection efficiency.

[0020] (2) Through the setting of the detection and collection component, after the steel pipe body is inspected by the flaw detector, the second forward and reverse motor can be used in time to push the seamless qualified steel pipe body into the first collection box, and the unqualified steel pipe body with seams can be pushed into the second collection box, so that qualified products and defective products can be separated quickly and efficiently, which is convenient for further statistics of the defective rate.

[0021] (3) Through the setting of the paint plate, a coating roller is used to coat the bottom of the paint plate with a water-based matte emulsion. When the steel pipe body is lifted and moved to the right by the stepping feeding mechanism, it rolls with the bottom of the paint plate, and the water-based matte emulsion is evenly coated on the steel pipe body. Then, during the laser flaw detection process, microscopic roughness is generated on the surface of the steel pipe body, which changes the reflection mode of light, effectively reduces reflection, and improves the detection accuracy.

[0022] (4) By setting up the intermittent coating unit, while the stepping feeding mechanism is working, when the movable seat moves downward and resets to the left, the coating roller is used to coat the water-based matte emulsion on the bottom of the paint plate, so that the bottom of the paint plate always keeps sufficient paint, so that the steel pipe body can always be evenly coated with paint, thereby ensuring the roughness of the surface of the steel pipe body and reducing reflection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The external structure of the present invention is three-dimensional Figure 1 ;

[0024] Figure 2 The external structure of the present invention is three-dimensional Figure 2 ;

[0025] Figure 3 It is a three-dimensional diagram of the step feeding mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A;

[0027] Figure 5 It is a local structural stereogram of the present invention;

[0028] Figure 6 A three-dimensional diagram of the detection and collection assembly of the present invention;

[0029] Figure 7 It is a three-dimensional diagram of the intermittent coating unit of the present invention.

[0030] In the figure: 1, box body; 2, feeding rack; 3, semicircular groove; 4, steel pipe body; 5, arc buffer groove; 6, stepping feeding mechanism; 7, detection and collection assembly; 8, U-shaped frame; 9, feeding box; 10, mounting plate; 11, cylinder; 12, connecting plate; 13, vertical plate; 14, paint plate; 15, intermittent coating unit; 61, rotating rod; 62, motor 1; 63, cam 1; 64, missing cylinder; 65, fixed plate; 66, cross rod; 67, U-shaped plate; 68, roller; 69, round plate; 610, spring 1; 611, bottom plate; 612, moving seat ; 613, material support trough; 71, L-shaped plate; 72, flaw detector; 73, cross plate; 74, rack; 75, gear; 76, folding rod; 77, push plate; 78, rotating shaft; 79, motor 2; 710, pulley 1; 711, belt 1; 712, collection box 1; 713, collection box 2; 151, L-shaped frame; 152, cross bar; 153, pulley 2; 154, belt 2; 155, cam 2; 156, L-shaped seat; 157, slide bar; 158, U-shaped seat; 159, coating roller; 1510, baffle; 1511, spring 2. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides three technical solutions, including the following embodiments:

[0033] Example 1

[0034] See also Figure 1-Figure 5A seamless steel pipe surface detection device comprises a box body 1, a feeding rack 2 is fixed on the top of the box body 1, the feeding rack 2 is supported and lifted by four support plates, a plurality of semicircular grooves 3 are provided on the top of the feeding rack 2, a steel pipe body 4 is provided in the semicircular grooves 3, the steel pipe body 4 is placed in the semicircular grooves 3, the size of the steel pipe body 4 and the semicircular grooves 3 are adapted, an arc-shaped buffer groove 5 is provided on one side of the top of the feeding rack 2, through the setting of the arc-shaped buffer groove 5, when the steel pipe body 4 falls into the arc-shaped buffer groove 5, the steel pipe body 4 swings up and down and left and right in the arc-shaped buffer groove 5, and a stepping feeding mechanism 6 is provided in the box body 1 to drive the steel pipe body 4 to gradually move into the arc-shaped buffer groove 5;

[0035] The stepping feeding mechanism 6 includes a rotating rod 61 rotatably connected between the inner walls of the box body 1, a motor 62 is fixed on one side of the box body 1, the motor 62 is controlled by an external switch and is electrically connected to an external power supply, the motor 62 drives the rotating rod 61 to rotate, the output end of the motor 62 is fixed to one end of the rotating rod 61 through a coupling, a cam 63 is fixed on the rotating rod 61, and a missing cylinder 64 is also fixed on the rotating rod 61, the right side of the missing cylinder 64 has different widths and is in a "Z" shape, two fixed plates 65 are fixed on one side of the inner wall of the box body 1, and a cross rod 66 is slidably connected between the inner surfaces of the two fixed plates 65, the top of the cross rod 66 extends to the outside of the box body 1, and a through groove for the cross rod 66 to pass through is opened on the box body 1, refer to the attached drawings of the specification Figure 1 As shown, a U-shaped plate 67 is fixed to one end of the cross rod 66, and a roller 68 is rotatably connected between the inner walls of the U-shaped plate 67. The roller 68 rolls on one side of the missing tube 64. A circular plate 69 is fixed to the cross rod 66, and a spring 610 is fixed between one side of the circular plate 69 and one of the fixed plates 65. The setting of the spring 610 allows the cross rod 66 to reset to the left. A bottom plate 611 is fixed to the bottom end of the cross rod 66, and the outer surface of the cam 63 contacts and squeezes the bottom of the bottom plate 611. A moving seat 612 is fixed to the top of the cross rod 66, and a plurality of supporting grooves 613 are opened on the moving seat 612. When the moving seat 612 moves upward, the steel pipe body 4 falls into the supporting groove 613, and is lifted by the moving seat 612 to be gradually fed to the right.

[0036] By setting up the step-by-step feeding mechanism 6, the steel pipe body 4 is gradually moved to the right by step-by-step feeding. Each time, the steel pipe body 4 in the semicircular groove 3 is lifted up and moved one grid to the right, and finally the steel pipe body 4 is moved into the arc buffer groove 5, so that the steel pipe body 4 rolls back and forth. At the same time, the flaw detector 72 is started to evenly detect the surface of the steel pipe body 4. No manual detection operation is required throughout the process, and the degree of automation is high, so that multiple steel pipe bodies 4 can realize the function of gradual automatic detection, which greatly improves the detection efficiency.

[0037] U-shaped frames 8 are also fixed on both sides of the feeding rack 2, and a feeding box 9 is fixed between the opposite sides of the two U-shaped frames 8. Multiple steel pipe bodies 4 are stacked in the feeding box 9, and the bottom steel pipe body 4 falls onto the feeding rack 2. A mounting plate 10 is fixed on the top of the feeding rack 2, and a cylinder 11 is fixed on one side of the mounting plate 10. The cylinder 11 is controlled by an external switch and is electrically connected to an external power supply. The output end of the cylinder 11 passes through the mounting plate 10 and extends to one side of the mounting plate 10. A connecting plate 12 is fixed to the output end of the cylinder 11. After the cylinder 11 is started, the connecting plate 12 is driven to move to the right, thereby driving the steel pipe body 4 to move to the right, and finally rolling into the semicircular groove 3. A paint plate 14 is fixed through four vertical plates 13. The setting of the paint plate 14 allows the steel pipe body 4 to be evenly coated with a water-based matte emulsion to reduce the reflection on the surface of the steel pipe body 4. The bottom of the paint plate 14 is coated with a water-based matte emulsion. The water-based matte emulsion is an environmentally friendly coating. The main components are water-based resin emulsion, matte agent and additives, etc. It can form a uniform matte coating on the surface of the seamless steel pipe. For example, a silica matte agent is added to the acrylic emulsion. When the emulsion is coated on the surface of the steel pipe and dried, the water-based resin forms a continuous film structure, and the silica matte agent is distributed in the film, which makes the surface produce microscopic roughness, changes the reflection mode of light, and effectively reduces reflection. At the same time, because it is a water-based system, this coating can be quickly removed by washing with water. After testing, the water-based matte emulsion coating can be removed by rinsing the steel pipe surface with clean water or wiping it with a damp cloth. Compared with some organic solvent-based coatings, water-based coatings are environmentally friendly and will not leave difficult-to-remove organic residues on the steel pipe surface, which will not affect the normal use of the steel pipe. This coating can be flexibly applied and removed as needed, and is a convenient and fast anti-reflective solution.

[0038] Example 2

[0039] Based on Example 1, see Figure 6 As shown, the feeding rack 2 is also provided with a detection and collection component 7 for performing flaw detection on the surface of the steel pipe body 4 and collecting qualified products and defective products separately. The detection and collection component 7 includes an L-shaped plate 71 fixed to one side of the feeding rack 2. A flaw detector 72 is installed on the L-shaped plate 71. The flaw detector 72 is a laser holographic flaw detector. The flaw detector 72 emits a laser to illuminate the steel pipe body 4, and records multiple holograms of the surface of the steel pipe body 4. The computer analyzes and compares the multiple holograms. If there are defects on the surface of the object, its surface deformation will be different, thereby reflecting the defect information. A horizontal plate 73 is fixed on one side of the L-shaped plate 71, and a rack 74 is slidably connected to the top of the horizontal plate 73. A gear 75 is rotatably connected to one side of the L-shaped plate 71, and the gear 75 is meshed with the rack 74.

[0040] Folding rods 76 are fixed on both sides of the rack 74, and push plates 77 are fixed on the two folding rods 76. A rotating shaft 78 is fixed on the gear 75. A motor 2 79 is fixed on one side of the L-shaped plate 71. The motor 2 79 is a three-phase asynchronous motor that can be rotated forward and reversed. It is controlled by an external switch and is electrically connected to an external power supply. A pulley 1 710 is fixed to the output end of the motor 2 79 and one end of the rotating shaft 78. The two pulleys 1 710 are connected by a belt 1 711. A collecting box 1 712 is fixed on one side of the feeding rack 2. The collecting box 1 712 is used to collect qualified steel pipe bodies 4. A collecting box 2 713 is fixed on the other side of the feeding rack 2. The collecting box 2 713 is used to collect unqualified steel pipe bodies 4.

[0041] By setting up the detection and collection component 7, after the steel pipe body 4 is detected by the flaw detector 72, the forward and reverse motor 2 79 can be used in time to push the seamless qualified steel pipe body 4 into the collection box 1 712, and the unqualified steel pipe body with seams into the collection box 2 713, so that qualified products and defective products can be separated quickly and efficiently, which is convenient for further statistics of the defective rate.

[0042] An intermittent coating unit 15 for intermittently applying paint to the bottom of the paint plate 14 is provided on one side of the feeding rack 2. The intermittent coating unit 15 includes an L-shaped frame 151 fixed on one side of the feeding rack 2. A cross bar 152 is rotatably connected to one side of the L-shaped frame 151. A pulley 153 is fixed on the cross bar 152 and the rotating rod 61. The two pulleys 153 are connected through a belt 154 for transmission.

[0043] A cam 155 is fixed to one end of the cross bar 152, an L-shaped seat 156 is fixed to one side of the feeding rack 2, the inner surface of the L-shaped seat 156 is slidably connected to a slide rod 157, one end of the slide rod 157 is fixed to a U-shaped seat 158, a coating roller 159 is rotatably connected between the inner walls of the U-shaped seat 158, the coating roller 159 is stained with a water-based matte emulsion, and the outer surface of the coating roller 159 is in rolling contact with the bottom of the paint plate 14.

[0044] A baffle 1510 is fixed to the other end of the slide rod 157 , a spring 1511 is fixed between one side of the baffle 1510 and one side of the L-shaped seat 156 , the spring 1511 is sleeved on the slide rod 157 , and the outer surface of the cam 155 is in contact and extrusion with one side of the baffle 1510 .

[0045] By setting the intermittent coating unit 15, while the stepping feeding mechanism 6 is working, when the movable seat 612 moves downward and resets to the left, the coating roller 159 is used to coat the water-based matte emulsion on the bottom of the paint plate 14, so that the bottom of the paint plate 14 always keeps sufficient paint, so that the steel pipe body 4 can always be evenly coated with paint, thereby ensuring the roughness of the surface of the steel pipe body 4 and reducing reflection.

[0046] Example 3

[0047] Based on Example 2, see Figure 1-Figure 6 As shown, the present invention also discloses a method for using a seamless steel pipe surface detection device, which specifically includes the following steps:

[0048] Step 1, put the steel pipe body 4 to be tested into the material box 9, the lowest steel pipe body 4 falls onto the feeding rack 2, start the cylinder 11, so that the cylinder 11 pushes the steel pipe body 4 to roll into the semicircular groove 3, start the motor 62, the motor 62 drives the rotating rod 61, the cam 63, and the missing cylinder 64 to rotate, and then the roller 68 rolls on one side of the missing cylinder 64 when the missing cylinder 64 rotates. Due to the width difference on one side of the missing cylinder 64, the roller 68 drives the cross rod 66 to move back and forth left and right, and at the same time, when the cam 63 rotates, it drives the bottom plate to move up and down, and then drives the moving seat 612 to lift the steel pipe body 4 upward, and then move the steel pipe body 4 to the right and then fall to the left to reset, repeat the steps of supporting and moving materials to realize step feeding, and move the steel pipe body 4 into the arc buffer groove 5;

[0049] Step 2, the steel pipe body 4 rolls back and forth in the arc-shaped buffer groove 5. During this process, the flaw detector 72 is started to emit a laser to illuminate the steel pipe body 4, and multiple holograms on the surface of the steel pipe body 4 are recorded. The computer analyzes and compares the multiple holograms. If there are defects on the surface of the object, its surface deformation will be different, thereby reflecting the defect information. If there are no defects on the surface of the steel pipe body 4, the motor 2 is started to rotate forward, and the motor 2 drives the gear 75 to rotate, and the gear 75 drives the rack to move forward, and then the rear push plate 77 pushes the steel pipe body 4 forward, and pushes the steel pipe body 4 into the collection box 1 712. If there are defects on the surface of the steel pipe body 4, the motor 2 79 is started to rotate reversely, thereby driving the rack 74 to move backward, and then the front push plate pushes the steel pipe body 4 to move backward into the collection box 2 713;

[0050] Step three, when the rotating rod 61 rotates, it synchronously drives the cross bar 152 to rotate through the pulley 2 153 and the belt 2 154, and then drives the cam 2 155 to rotate, and then drives the baffle to move intermittently in the front and rear directions, and then drives the coating roller 159 to roll at the bottom of the paint plate 14, so that the bottom of the paint plate 14 is always kept full of paint. In the process of lifting and feeding the steel pipe body 4, after the surface of the steel pipe body 4 contacts the bottom of the paint plate 14, the steel pipe body 4 and the bottom of the paint plate 14 roll, and then the paint is evenly applied to the steel pipe body 4, and then in the process of laser flaw detection, the surface of the steel pipe body 4 is microscopically rough, which changes the reflection mode of light, effectively reduces reflection, and improves detection accuracy.

[0051] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0052] The above embodiments of the invention are described in detail, but the contents are only preferred embodiments of the invention and cannot be considered to limit the scope of the invention. All equivalent changes and improvements made within the scope of the invention should still fall within the scope of the invention.

Claims

1. A seamless steel pipe surface detection device, comprising a housing (1), characterized in that: A feeding rack (2) is fixed on the top of the box body (1), a plurality of semicircular grooves (3) are provided on the top of the feeding rack (2), a steel pipe body (4) is arranged in the semicircular groove (3), an arc-shaped buffer groove (5) is provided on one side of the top of the feeding rack (2), and a stepping feeding mechanism (6) is arranged in the box body (1) for driving the steel pipe body (4) to gradually move into the arc-shaped buffer groove (5); The step feeding mechanism (6) comprises a rotating rod (61) rotatably connected between the inner walls of the box body (1), a motor (62) is fixed on one side of the box body (1), the motor (62) drives the rotating rod (61) to rotate, a cam (63) is fixed on the rotating rod (61), and a missing cylinder (64) is also fixed on the rotating rod (61), two fixed plates (65) are fixed on one side of the inner wall of the box body (1), a cross rod (66) is slidably connected between the inner surfaces of the two fixed plates (65), a U-shaped plate (67) is fixed at one end of the cross rod (66), and the U-shaped plate A roller (68) is rotatably connected between the inner walls of the cross bar (67), and the roller (68) rolls on one side of the missing tube (64). A circular plate (69) is fixed on the cross bar (66), and a spring (610) is fixed between one side of the circular plate (69) and one of the fixed plates (65). A bottom plate (611) is fixed at the bottom end of the cross bar (66), and the outer surface of the cam (63) is in contact and extrusion with the bottom of the bottom plate (611). A movable seat (612) is fixed at the top end of the cross bar (66), and a plurality of material supporting grooves (613) are provided on the movable seat (612).

2. A seamless steel pipe surface detection device according to claim 1, characterized in that: The feeding rack (2) is also provided with a detection and collection assembly (7) for performing flaw detection on the surface of the steel pipe body (4) and collecting qualified products and defective products separately. The detection and collection assembly (7) comprises an L-shaped plate (71) fixed to one side of the feeding rack (2), a flaw detector (72) is installed on the L-shaped plate (71), a transverse plate (73) is fixed to one side of the L-shaped plate (71), a rack (74) is slidably connected to the top of the transverse plate (73), a gear (75) is rotatably connected to one side of the L-shaped plate (71), and the gear (75) is meshed with the rack (74).

3. A seamless steel pipe surface detection device according to claim 2, characterized in that: Folding rods (76) are fixed on both sides of the rack (74), and push plates (77) are fixed on the two folding rods (76). A rotating shaft (78) is fixed on the gear (75). A second motor (79) is fixed on one side of the L-shaped plate (71). A pulley (710) is fixed on the output end of the second motor (79) and one end of the rotating shaft (78). The two pulleys (710) are connected by a belt (711). A collection box (712) is fixed on one side of the feeding rack (2), and a second collection box (713) is fixed on the other side of the feeding rack (2).

4. The surface detection device for a seamless steel pipe according to claim 1, characterized in that: U-shaped frames (8) are also fixed on both sides of the feeding rack (2), and a feeding box (9) is fixed between the opposite sides of the two U-shaped frames (8). A mounting plate (10) is fixed on the top of the feeding rack (2), and a cylinder (11) is fixed on one side of the mounting plate (10). The output end of the cylinder (11) passes through the mounting plate (10) and extends to one side of the mounting plate (10). A connecting plate (12) is fixed on the output end of the cylinder (11). A paint plate (14) is fixed on the feeding rack (2) through four vertical plates (13), and the bottom of the paint plate (14) is coated with a water-based matte emulsion.

5. A seamless steel pipe surface detection device according to claim 4, characterized in that: An intermittent coating unit (15) for intermittently coating the bottom of a paint plate (14) is arranged on one side of the feeding rack (2), and the intermittent coating unit (15) comprises an L-shaped frame (151) fixed on one side of the feeding rack (2), and a cross bar (152) is rotatably connected to one side of the L-shaped frame (151), and a second pulley (153) is fixed on both the cross bar (152) and the rotating rod (61), and the two second pulleys (153) are connected to each other through a second belt (154).

6. A seamless steel pipe surface detection device according to claim 5, characterized in that: A cam 2 (155) is fixed to one end of the cross bar (152), an L-shaped seat (156) is fixed to one side of the feeding rack (2), the inner surface of the L-shaped seat (156) is slidably connected to a slide bar (157), one end of the slide bar (157) is fixed to a U-shaped seat (158), a coating roller (159) is rotatably connected between the inner walls of the U-shaped seat (158), and the outer surface of the coating roller (159) is in rolling contact with the bottom of the paint plate (14).

7. A seamless steel pipe surface detection device according to claim 6, characterized in that: A baffle (1510) is fixed to the other end of the slide bar (157), a second spring (1511) is fixed between one side of the baffle (1510) and one side of the L-shaped seat (156), the second spring (1511) is sleeved on the slide bar (157), and the outer surface of the second cam (155) is in contact and extrusion with one side of the baffle (1510).

8. A method for using a seamless steel pipe surface detection device, characterized in that: The specific steps include: Step 1: Put the steel pipe body (4) to be tested into the material box (9), and the lowest steel pipe body (4) falls onto the feeding rack (2). Start the cylinder (11), so that the cylinder (11) pushes the steel pipe body (4) to roll into the semicircular groove (3), and start the motor 1 (62). The motor 1 (62) drives the rotating rod (61), the cam 1 (63), and the missing cylinder (64) to rotate, and then the missing cylinder (64) rotates to make the roller (68) move on the missing cylinder (64). The roller (68) drives the cross bar (66) to move back and forth due to the width difference on one side of the missing cylinder (64). At the same time, the bottom plate is driven to move up and down when the cam (63) rotates, thereby driving the moving seat (612) to lift the steel pipe body (4) upward, and then move the steel pipe body (4) to the right and then fall to the left to reset. The steps of supporting and moving materials are repeated to realize step feeding, and the steel pipe body (4) is moved into the arc-shaped buffer groove (5); Step 2, the steel pipe body (4) rolls back and forth in the arc-shaped buffer groove (5). During this process, the flaw detector (72) is started to emit a laser to illuminate the steel pipe body (4), and multiple holograms of the surface of the steel pipe body (4) are recorded. The computer analyzes and compares the multiple holograms. If there are defects on the surface of the object, its surface deformation will be different, thereby reflecting the defect information. If there are no defects on the surface of the steel pipe body (4), the motor 2 is started to rotate forward, and the motor 2 drives the gear (75) to rotate. The gear (75) drives the rack to move forward, and then the rear push plate (77) pushes the steel pipe body (4) forward and pushes the steel pipe body (4) into the collection box 1 (712). If there are defects on the surface of the steel pipe body (4), the motor 2 (79) is started to rotate reversely, thereby driving the rack (74) to move backward, and then the front push plate pushes the steel pipe body (4) to move backward into the collection box 2 (713); Step 3, when the rotating rod (61) rotates, it synchronously drives the cross bar (152) to rotate through the pulley 2 (153) and the belt 2 (154), thereby driving the cam 2 (155) to rotate, thereby driving the baffle to move intermittently in the front-rear direction, thereby driving the coating roller (159) to roll at the bottom of the paint plate (14), so that the bottom of the paint plate (14) is always kept full of paint. During the lifting and feeding movement of the steel pipe body (4), after the surface of the steel pipe body (4) contacts the bottom of the paint plate (14), the steel pipe body (4) and the bottom of the paint plate (14) roll, thereby evenly smearing the paint on the steel pipe body (4). During the laser flaw detection process, the surface of the steel pipe body (4) is microscopically rough, which changes the reflection mode of light, effectively reduces reflection, and improves the detection accuracy.

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