Steel pipe laser detection equipment

Abstract

The invention discloses laser detection equipment for a steel pipe. The laser detection equipment comprises a steel pipe positioning device, a laser emitting device and a light path monitoring device, the steel pipe positioning device is provided with a detection station. The light path monitoring device and the laser emitting device are arranged on the left side and the right side of the detection station respectively. The optical path monitoring device comprises an imaging plate. The laser emitting device comprises a laser emitting unit and a detection driving mechanism. The laser emission unit is arranged towards the imaging plate. The detection driving mechanism is used for driving the laser emission unit to move along the annular path. The annular path extends in a left-right direction. The steel pipe laser detection equipment can directly judge whether foreign matters exist on the inner wall of the steel pipe to block laser imaging or not through the imaging path of the laser moving along the inner wall of the steel pipe, so that flatness detection of the inner wall of the steel pipe is realized, and the equipment can be suitable for inner wall detection of large-length steel pipes.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe production equipment, and in particular to a steel pipe laser detection device. Background Art

[0002] Steel pipes are a common and frequently used metal product. They are increasingly used in industry, agriculture, and all areas of people's lives. In the production of steel pipes, finished steel pipes are quality inspected before being put into use. In the prior art, if it is necessary to determine whether there are foreign objects on the inner wall of a steel pipe, for shorter steel pipes, it can be determined by the naked eye of the inspector. However, for long steel pipes with a longer length, the field of view inside the steel pipe is limited and the lighting conditions are poor, so it is impossible to determine by the naked eye. Generally, only the flatness of the outer wall of the steel pipe is inspected. Summary of the invention

[0003] The object of the present invention is to provide a steel pipe laser detection device to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The technical solutions adopted to solve the above technical problems are:

[0005] A steel pipe laser detection device, comprising: a steel pipe positioning device, a laser emitting device and an optical path monitoring device;

[0006] The steel pipe positioning device has a detection station, and the optical path monitoring device and the laser emitting device are respectively arranged on the left and right sides of the detection station;

[0007] The optical path monitoring device includes an imaging board, and the laser emitting device includes a laser emitting unit and a detection drive mechanism. The laser emitting unit is arranged toward the imaging board, and the detection drive mechanism is used to drive the laser emitting unit to move along a circular path, and the circular path extends in the left and right directions.

[0008] The steel pipe laser detection equipment provided by the present invention has at least the following beneficial effects: the steel pipe to be detected is placed in the detection station, and is detected by the laser emitting device and the optical path monitoring device on the left and right sides. The detection drive mechanism drives the laser emitting unit to move along a ring path, and the circular path of the laser can be drawn on the imaging board. When the laser is not blocked, the imaging path of the laser can be fully displayed; when the laser is blocked by foreign matter, the imaging path cannot be continuous. The steel pipe laser detection equipment of the present invention can directly determine whether there are foreign objects on the inner wall of the steel pipe that block laser imaging through the imaging path of the laser moving along the inner wall of the steel pipe, thereby realizing the flatness detection of the inner wall of the steel pipe, and can be suitable for the inner wall detection of long-length steel pipes.

[0009] As a further improvement of the above technical solution, the steel pipe positioning device includes a steel pipe conveying frame and a material blocking mechanism. The upper end of the steel pipe conveying frame has a conveying surface that is inclined with the front higher and the rear lower. The material blocking mechanism has a material blocking part that can extend from the bottom to the upper side of the conveying surface.

[0010] As a further improvement of the above technical solution, the steel pipe positioning device also includes a trusteeship mechanism, which is arranged below the inspection station and includes a bracket and a trusteeship driving component for driving the bracket to move up and down.

[0011] As a further improvement of the above technical solution, the laser emitting device includes a rotating component, the laser emitting unit is installed on the rotating component, and the detection drive mechanism is transmission-connected to the rotating component and causes the rotating component to rotate around a rotation axis extending left and right.

[0012] As a further improvement of the above technical solution, the detection drive mechanism includes a detection drive motor and a drive shaft, the drive shaft is coaxially fixedly connected to the rotating component, and the output shaft of the detection drive motor is drivingly connected to the drive shaft.

[0013] As a further improvement of the above technical solution, the laser emitting device further includes a variable diameter driving mechanism, and the variable diameter driving mechanism is used to drive the laser emitting unit to move relative to the display board along the radial direction of the driving shaft.

[0014] As a further improvement of the above technical solution, the laser emitting unit has a variable diameter adjustment column extending left and right, the variable diameter driving mechanism includes a variable diameter disk, the variable diameter disk is coaxially arranged with the driving shaft, the variable diameter disk has a variable diameter driving groove extending spirally around the axial direction, and the variable diameter adjustment column is slidably embedded in the variable diameter driving groove.

[0015] As a further improvement of the above technical solution, the variable diameter disk is coaxially rotatably sleeved on the drive shaft, an electromagnetic clutch is coaxially arranged between the drive shaft and the variable diameter disk, and the variable diameter drive mechanism includes a clamping member for clamping the edge of the variable diameter disk.

[0016] As a further improvement of the above technical solution, an encoder is coaxially arranged between the variable diameter disk and the rotating member.

[0017] As a further improvement of the above technical solution, the optical path monitoring device also includes a visual detection system arranged toward the imaging board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0019] Figure 1This is a rear view of an embodiment of the steel pipe laser detection device provided by the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of an embodiment of the steel pipe laser detection device provided by the present invention;

[0021] Figure 3 This is a side cross-sectional view of an embodiment of the steel tube laser detection device provided by the present invention;

[0022] Figure 4 is a rear view of an embodiment of the laser emitting device provided by the present invention;

[0023] Figure 5 This is a side exploded schematic diagram of an embodiment of the laser emitting device provided by the present invention;

[0024] Figure 6 The figure is a three-dimensional exploded schematic diagram of an embodiment of the laser emitting device provided by the present invention.

[0025] In the figure: 100, steel pipe positioning device; 110, steel pipe conveying frame; 120, material blocking mechanism; 121, material blocking member; 122, material blocking driving member; 130, trusteeship mechanism; 131, bracket; 132, trusteeship driving member; 200, laser emitting device; 210, laser emitting unit; 211, variable diameter adjustment column; 220, right frame; 221, sliding seat; 222, sliding driving member; 230, rotating member; 231, laser fixing plate; 232, connecting plate; 233. Connecting column; 240. Detection drive mechanism; 241. Detection drive motor; 242. Drive shaft; 250. Variable diameter disk; 251. Variable diameter drive groove; 252. Avoidance groove; 260. Variable diameter drive mechanism; 261. Electromagnetic clutch; 262. Clamping member; 263. Encoder; 264. Connecting arm; 300. Optical path monitoring device; 310. Display board; 320. Left frame; 330. Visual detection system; 331. Light source; 332. CCD camera. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0030] Reference Figures 1 to 6 The steel tube laser detection device of the present invention is implemented as follows:

[0031] A steel pipe laser detection device comprises: a steel pipe positioning device 100, a laser emitting device 200 and an optical path monitoring device 300.

[0032] The steel pipe positioning device 100 has a detection station. The optical path monitoring device 300 and the laser emitting device 200 are respectively arranged on the left and right sides of the detection station.

[0033] The optical path monitoring device 300 includes an imaging board 310. The laser emitting device 200 includes: a laser emitting unit 210 and a detection drive mechanism 240. The laser emitting unit 210 is arranged toward the imaging board 310. The detection drive mechanism 240 is used to drive the laser emitting unit 210 to move along a circular path.

[0034] In actual use, the steel pipe to be inspected is placed in the inspection station and inspected by the laser emitting device 200 and the optical path monitoring device 300 on the left and right sides. The detection drive mechanism 240 drives the laser emitting unit 210 to move along a circular path, and the circular path of the laser can be drawn on the display board 310. When the laser is not blocked, the imaging path of the laser can be fully displayed; when the laser is blocked by foreign matter, the imaging path cannot be continuous. The steel pipe laser detection equipment of the present invention can directly determine whether there are foreign objects on the inner wall of the steel pipe that block laser imaging through the imaging path of the laser moving along the inner wall of the steel pipe, thereby realizing the flatness detection of the inner wall of the steel pipe.

[0035] In this embodiment, the steel pipe positioning device 100 comprises: a steel pipe conveying frame 110 and a material blocking mechanism 120. The upper end of the steel pipe conveying frame 110 has a conveying surface that is inclined with a high front and a low rear. The material blocking mechanism 120 has a material blocking portion that can extend from the bottom to the upper side of the conveying surface.

[0036] Specifically, the material blocking mechanism 120 includes: a material blocking member 121 and a material blocking driving member 122. The material blocking portion is provided on the material blocking member 121. The material blocking member 121 is slidably connected with the steel pipe conveying frame 110 in the up-down direction. The material blocking driving member 122 has a material blocking driving end which is transmission-connected with the material blocking member 121 and enables the material blocking member 121 to move up-down relative to the steel pipe conveying frame 110.

[0037] Referring to the accompanying drawings, the material blocking member 121 is in the shape of a cylinder extending up and down. The material blocking driving member 122 can be a linear driving member such as a cylinder, an electric push rod, a hydraulic push rod or a screw nut driving assembly.

[0038] In actual use, the steel pipe to be inspected rolls backward on the conveying surface under the action of its own weight, and the material blocking driving component 122 drives the material blocking part of the material blocking member 121 to extend upward to the upper side of the conveying surface, restricting the steel pipe to the front side of the material blocking part to facilitate inspection.

[0039] In this embodiment, in order to prevent the steel pipe from swinging, there are multiple material blocking mechanisms 120. The multiple material blocking mechanisms 120 are arranged in a left-right arrangement. At least two of the material blocking mechanisms 120 are respectively arranged on the left and right sides of the steel pipe conveying frame 110.

[0040] Furthermore, the steel pipe positioning device 100 also includes a trustee mechanism 130. The trustee mechanism 130 is arranged below the inspection station. The trustee mechanism 130 includes: a bracket 131 and a trustee driving component 132. The trustee driving component 132 is used to drive the bracket 131 to move up and down. The trustee driving component 132 can be a linear driving component such as an upwardly arranged cylinder, an electric push rod, a hydraulic push rod, or a screw nut driving assembly.

[0041] After the material blocking mechanism 120 blocks the steel pipe at the inspection station, the hosting driving component 132 mobilizes the bracket 131 to push up, driving the steel pipe to rise, so that the steel pipe is flush with the laser emitting device 200 and the optical path monitoring device 300.

[0042] The upper end of the bracket 131 has a V-shaped bracket. When the bracket 131 is lifted up, the bracket can be clamped on the front and rear sides of the steel pipe, so that the steel pipe is positioned in the center of the bracket. In order to stably lift the steel pipe, in this embodiment, the number of the trusteeship mechanism 130 is multiple. The multiple trusteeship mechanisms 130 are arranged in a left-right direction. At least two trusteeship mechanisms 130 are respectively arranged on the left and right sides of the steel pipe conveying frame 110.

[0043] The laser emitting device 200 includes a rotating member 230. The rotating member 230 has a rotating axis extending left and right. The laser emitting unit 210 is installed on the rotating member 230, and the detection driving mechanism 240 has a detection driving end that is transmission-connected to the rotating member 230 and causes the rotating member 230 to rotate.

[0044] In this embodiment, the detection drive mechanism 240 includes: a detection drive motor 241 and a drive shaft 242. The drive shaft 242 is coaxially fixedly connected to the rotating member 230. The output shaft of the detection drive motor 241 is in driving connection with the drive shaft 242.

[0045] Referring to the accompanying drawings, the detection drive motor 241 is arranged beside the drive shaft 242, and the output shaft of the detection drive motor 241 is parallel to the drive shaft 242. The output shaft of the detection drive motor 241 is synchronously connected with the drive shaft 242 through a synchronous belt assembly. In some other embodiments, the output shaft of the detection drive motor 241 can be coaxially fixedly connected with the drive shaft 242. In some other embodiments, other transmission modes such as chain drive, gear drive or worm gear drive can also be used between the output shaft of the detection drive motor 241 and the drive shaft 242.

[0046] In this embodiment, the laser irradiation device further includes a right frame 220 , a sliding seat 221 and a sliding driving member 222 .

[0047] The right frame 220 is arranged on the right side of the steel pipe conveying frame 110. The sliding seat 221 is slidably arranged on the right frame 220 along the left and right directions. The sliding drive component 222 is used to drive the sliding seat 221 to move left and right relative to the right frame 220. The rotating component 230 and the detection drive mechanism 240 are both installed on the sliding seat 221. Specifically, the sliding seat 221 is slidably connected to the right frame 220 through sliding rails extending left and right, and the sliding drive component 222 can adopt a screw nut driving assembly arranged along the left and right. The driving shaft 242 is rotatably arranged at the upper end of the sliding seat 221. The rotating component 230 is arranged at the left end of the driving shaft 242.

[0048] To ensure the laser imaging effect, the rotation speed of the laser emitting unit 210 should not be too fast. To avoid the detection cycle time being too long, the number of the laser emitting units 210 is preferably multiple. The multiple laser emitting units 210 are evenly distributed around the circumference of the rotating component 230, so that the rotation angle of the rotating component 230 during the detection process is greatly reduced, thereby improving the detection efficiency. In this embodiment, the number of the laser emitting units 210 is four. The four laser emitting units 210 are evenly distributed.

[0049] To adapt to steel pipes of different sizes, the laser emitting unit 210 is preferably adjustable along the radial direction of the drive shaft 242. In this embodiment, the laser emitting device 200 further includes a variable diameter driving mechanism 260 for driving the laser emitting unit 210 to move radially along the drive shaft 242 relative to the display board 310.

[0050] The variable diameter driving mechanism 260 includes a variable diameter disk 250. The variable diameter disk 250 is coaxially arranged with the driving shaft 242. The laser emitting unit 210 is connected to the rotating member 230 in a radial sliding manner and has a variable diameter adjustment column 211 extending left and right. The variable diameter disk 250 has a plurality of variable diameter driving grooves 251 extending spirally around the axial direction. The variable diameter adjustment columns 211 are slidably embedded in the variable diameter driving grooves 251 in a one-to-one correspondence. When the variable diameter disk 250 rotates relative to the rotating member 230, the variable diameter adjustment column 211 moves along the variable diameter driving grooves 251, thereby realizing radial adjustment to adapt to the detection of steel pipes with different inner diameters.

[0051] In this embodiment, the diameter-changing disk 250 is coaxially rotatably sleeved on the driving shaft 242. An electromagnetic clutch 261 is coaxially arranged between the driving shaft 242 and the diameter-changing disk 250. The diameter-changing driving mechanism 260 includes a clamping member 262 for clamping the edge of the diameter-changing disk 250.

[0052] The clamping member 262 is disposed below the variable diameter disk 250 and mounted on the sliding seat 221. The clamping member 262 includes a clamping cylinder and two clamping claws. The two clamping claws are respectively disposed on the left and right sides of the lower edge of the variable diameter disk 250, and the clamping cylinder is used to drive the two clamping claws to move toward or away from each other.

[0053] The electromagnetic clutch 261 is an automatically executed electrical appliance, which uses the principle of electromagnetic induction to combine or separate two rotating parts in the mechanical transmission system without stopping the rotation of the active part. During the normal detection process, the clamping member 262 releases the variable diameter disk 250, and the electromagnetic clutch 261 makes the drive shaft 242 and the variable diameter disk 250 fixedly connected, and the variable diameter disk 250 rotates synchronously with the rotating member 230. During the variable diameter adjustment process of the laser emitting unit 210, the electromagnetic clutch 261 releases the variable diameter disk 250, so that the variable diameter disk 250 is rotatably connected with the drive shaft 242, and the clamping member 262 clamps the lower end of the variable diameter disk 250. At this time, the detection drive member drives the rotating member 230 to rotate, and the laser emitting unit 210 rotates relative to the variable diameter disk 250, thereby realizing variable diameter adjustment.

[0054] Referring to the accompanying drawings, the rotating component 230 includes: a laser fixing disk 231 and a connecting plate 232. The laser fixing disk 231 and the connecting plate 232 are arranged on the left and right. The laser emitting unit 210 and the driving shaft 242 are connected to the laser fixing disk 231 and the connecting plate 232 respectively. The diameter-changing disk 250 is arranged between the laser fixing disk 231 and the connecting plate 232. The diameter-changing disk 250 has a avoidance groove 252 extending circumferentially, and a connecting column 233 is movably arranged in the avoidance groove 252, and the left and right ends of the connecting column 233 are fixedly connected to the laser fixing disk 231 and the connecting plate 232 respectively.

[0055] An encoder 263 is provided between the variable diameter disk 250 and the rotating member 230. In this embodiment, the encoder 263 is coaxially provided between the laser fixed disk 231 and the variable diameter disk 250, and the laser fixed disk 231 has a connecting arm 264 extending in the radial direction. The encoder 263 includes a code disk and a yardstick connected in a coaxial rotation. The code disk and the yardstick are fixedly connected to the connecting arm 264 and the variable diameter disk 250, respectively. The relative rotation angle between the variable diameter disk 250 and the rotating member 230 is controlled by the encoder 263, thereby realizing the radial precision adjustment of the laser emitting unit 210.

[0056] The optical path monitoring device 300 also includes a left frame 320 and a visual detection system 330. The left frame 320 is arranged on the left side of the steel pipe conveying frame 110. The imaging board 310 is arranged at the upper end of the left frame 320. The visual detection system 330 is arranged toward the imaging board 310. The visual detection system 330 includes a light source 331 and a CCD camera 332. In this embodiment, the CCD camera 332 is arranged on the left side of the imaging board 310. The imaging board 310 is made of a light-transmitting material. The material of the imaging board 310 can be acrylic, polyetheretherketone, high-strength organic glass, transparent polyphenylene ester, etc. The imaging path of the laser emitting unit 210 can be monitored and recorded by the CCD camera 332, and the imaging type can be automatically determined by the control center to achieve automatic detection.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, a person skilled in the art may make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of the present invention. These changes, modifications, equivalent variations or substitutions are all included in the scope defined by the claims of this application. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A steel pipe laser detection device, characterized in that: include: Steel pipe positioning device, laser emitting device and optical path monitoring device; The steel pipe positioning device has a detection station, and the optical path monitoring device and the laser emitting device are respectively arranged on the left and right sides of the detection station; The optical path monitoring device includes an imaging board, and the laser emitting device includes a laser emitting unit and a detection drive mechanism. The laser emitting unit is arranged toward the imaging board, and the detection drive mechanism is used to drive the laser emitting unit to move along a circular path, and the circular path extends in the left and right directions.

2. The steel pipe laser detection equipment according to claim 1, characterized in that: The steel pipe positioning device includes a steel pipe conveying frame and a material blocking mechanism. The upper end of the steel pipe conveying frame has a conveying surface that is inclined with the front higher and the rear lower. The material blocking mechanism has a material blocking portion that can extend from the bottom to the upper side of the conveying surface.

3. The steel pipe laser detection equipment according to claim 2, characterized in that: The steel pipe positioning device also includes a trusteeship mechanism, which is arranged below the detection station and includes a bracket and a trusteeship driving component for driving the bracket to move up and down.

4. The steel pipe laser detection equipment according to claim 1, characterized in that: The laser emitting device includes a rotating component, the laser emitting unit is installed on the rotating component, and the detection drive mechanism is transmission-connected with the rotating component and causes the rotating component to rotate around a rotating axis extending left and right.

5. The steel pipe laser detection equipment according to claim 4, characterized in that: The detection drive mechanism comprises a detection drive motor and a drive shaft. The drive shaft is coaxially and fixedly connected with the rotating member. The output shaft of the detection drive motor is drivingly connected with the drive shaft.

6. The steel tube laser detection device according to claim 5, characterized in that: The laser emitting device further comprises a variable diameter driving mechanism, and the variable diameter driving mechanism is used to drive the laser emitting unit to move relative to the imaging board along the radial direction of the driving shaft.

7. The steel tube laser detection device according to claim 6, characterized in that: The laser emitting unit has a variable diameter adjustment column extending left and right, and the variable diameter driving mechanism includes a variable diameter disk, which is coaxially arranged with the driving shaft. The variable diameter disk has a variable diameter driving groove extending spirally around the axial direction, and the variable diameter adjustment column is slidably embedded in the variable diameter driving groove.

8. The steel tube laser detection device according to claim 7, characterized in that: The diameter-changing disk is coaxially rotatably sleeved on the driving shaft, an electromagnetic clutch is coaxially arranged between the driving shaft and the diameter-changing disk, and the diameter-changing driving mechanism includes a clamping member for clamping the edge of the diameter-changing disk.

9. The steel tube laser detection device according to claim 8, characterized in that: An encoder is coaxially arranged between the diameter-changing disk and the rotating member.

10. The steel pipe laser detection equipment according to claim 1, characterized in that: The optical path monitoring device also includes a visual detection system arranged toward the imaging board.

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