Pipe fitting surface defect detection device and production line

Abstract

The utility model relates to a pipe fitting surface defect detection device and a production line, the pipe fitting surface defect detection device comprises a clamping mechanism, the clamping mechanism comprises two oppositely arranged linear modules, the two linear modules are respectively connected with a base, the two bases are respectively provided with a rotating shaft in a rotating mode, the two rotating shafts are coaxial, and the ends, close to each other, of the two rotating shafts are respectively and coaxially provided with an inner supporting shaft and a clamping jaw; the rotating shaft connected with the clamping jaw is further connected with a driving assembly for driving the rotating shaft to rotate; the photographing mechanism comprises a rack, and a strip-shaped light source and a line scanning camera which face the position between the inner supporting shaft and the clamping jaw are arranged on the rack. According to the detection device, the visual detection device is adopted to detect the product, compared with manual detection, the detection efficiency is higher, and the detection result is more accurate; compared with an existing visual detection device for detecting the pipe fitting, the detection device only needs to be provided with one camera, the product detection process is simplified, the detection efficiency can be further improved, and non-stop detection operation of a product assembly line is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of defect detection devices, in particular to a surface defect detection device and production line for pipe fittings. Background Art

[0002] In industrial production, strict requirements are imposed on the surface quality of workpieces, and defective products on the production line need to be removed in a timely manner. Only when the surface quality meets the requirements can the workpieces be allowed to enter the next production and processing link.

[0003] During the production process of pipe workpieces, it is necessary to detect surface defects. Existing detection methods mostly use manual or visual detection devices for detection. Among them, manual detection has low efficiency, is difficult for detecting small defects, and it is easy for inspectors to have visual fatigue, unable to ensure the reliability of detection; while existing visual detection devices mostly use two annular light sources to illuminate from both ends of the pipe fitting, and then use multiple area array cameras distributed around the pipe fitting to statically photograph the surface of the pipe fitting. The lighting effect is poor, the detection efficiency is low, the obtained image processing is difficult, and it is not suitable for the detection of longer and larger products. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the situation in the prior art that manual or visual detection devices are mostly used to detect surface defects of pipe fittings. Among them, manual detection has low efficiency, is difficult for detecting small defects, and it is easy for inspectors to have visual fatigue, unable to ensure the reliability of detection; while existing visual detection devices mostly use two annular light sources to illuminate from both ends of the pipe fitting, and then use multiple area array cameras distributed around the pipe fitting to statically photograph the surface of the pipe fitting. The lighting effect is poor, the detection efficiency is low, the obtained image processing is difficult, and it is not suitable for the detection of longer and larger products.

[0005] To solve the above technical problem, the utility model provides a surface defect detection device for pipe fittings, including

[0006] A clamping mechanism, the clamping mechanism includes two linear modules arranged oppositely, the output ends of the two linear modules are respectively connected with a base, and a rotating shaft parallel to the linear module is respectively rotatably arranged on the two bases. The two rotating shafts are coaxial, and the inner support shafts and clamping jaws are coaxially arranged at the ends of the two rotating shafts close to each other. The rotating shaft connected with the clamping jaw is also connected with a driving component for driving its rotation;

[0007] A photographing mechanism, the photographing mechanism includes a frame, the frame is arranged on one side of the clamping mechanism, and a strip light source and a line scan camera are respectively arranged on the frame and oriented towards the position between the inner support shaft and the clamping jaw.

[0008] In an embodiment of the present utility model, the driving assembly includes a servo motor, the servo motor is disposed on the base connected to the jaw, and the servo motor drives the rotation of the rotating shaft through a synchronous belt assembly.

[0009] In an embodiment of the present utility model, a through groove is provided on the base on one side of the synchronous belt assembly, an idler shaft is provided in the through groove, an idler wheel is rotatably connected to the idler shaft, and the circumferential surface of the idler wheel tightly presses the synchronous belt of the synchronous belt assembly.

[0010] In an embodiment of the present utility model, one end of the inner support shaft is conical, and the other end is vertically connected to a base. A plurality of connection holes are vertically formed in the base and connected to the rotating shaft through bolts.

[0011] In an embodiment of the present utility model, a through hole is respectively formed on each of the two bases, the two through holes are coaxial, and bearing seats are coaxially provided in the two through holes. The two rotating shafts are respectively rotatably connected to the two bearing seats through bearings.

[0012] In an embodiment of the present utility model, the frame includes two parallel support columns. First locking clamps are respectively provided on the two support columns. A support seat is respectively provided on one side of the two first locking clamps close to each other. Both ends of the bar-shaped light source are respectively connected to the two support seats.

[0013] In an embodiment of the present utility model, a mounting plate is vertically connected between the two support columns. A telescopic cylinder is connected to the middle position of the mounting plate. The output end of the telescopic cylinder is connected to a mounting seat, and the line scan camera is mounted on the mounting seat.

[0014] In an embodiment of the present utility model, the mounting seat includes a base. A horizontal shaft parallel to the mounting plate is provided on the base. A second locking clamp is connected to the horizontal shaft, and a sliding seat perpendicular to the horizontal shaft is provided on the second locking clamp. The line scan camera is connected to the sliding seat.

[0015] In an embodiment of the present utility model, a housing is provided on the mounting seat, and the line scan camera is disposed in the housing.

[0016] A production line includes the pipe surface defect detection device as described in any one of the above.

[0017] The above technical solution of the present utility model has the following advantages compared with the prior art:

[0018] A surface defect detection device and production line for pipe fittings according to the present utility model include a clamping mechanism and a photographing mechanism; the clamping mechanism includes two linear modules arranged oppositely, a base is connected to each of the two linear modules, a rotating shaft is rotatably arranged on each of the two bases, the two rotating shafts are coaxial, and an inner support shaft and a clamping jaw are coaxially arranged at the ends of the two rotating shafts close to each other. The rotating shaft connected with the clamping jaw is also connected with a driving component for driving its rotation; the photographing mechanism includes a frame, the frame is arranged on one side of the clamping mechanism, and a strip light source and a line-scan camera are respectively arranged on the frame and oriented towards the position between the inner support shaft and the clamping jaw. This detection device uses a vision detection device to detect products. Compared with manual detection, its detection efficiency is higher and the detection result is more accurate; compared with the existing vision detection devices for detecting pipe fittings, this detection device only needs to set one camera, simplifies the product detection process, can further improve the detection efficiency, and realizes non-stop detection operation of the product assembly line; moreover, the structure and floor area of the whole device are reduced, and the cost and the difficulty of installation and maintenance are lower; the structure of the whole device is simple, the installation and maintenance are convenient, and it is suitable for practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to the specific embodiments of the present utility model and in conjunction with the drawings, wherein

[0020] Figure 1 is a three-dimensional view of the surface defect detection device for pipe fittings of the preferred embodiment of the present utility model;

[0021] Figure 2 is a schematic structural view of the photographing mechanism of the surface defect detection device for pipe fittings of the preferred embodiment of the present utility model;

[0022] Figure 3 is Figure 2 an enlarged view of part A of the surface defect detection device for pipe fittings shown;

[0023] Figure 4 is a schematic structural view of the clamping mechanism of the surface defect detection device for pipe fittings of the preferred embodiment of the present utility model;

[0024] Figure 5 is a schematic structural view of the mounting base of the surface defect detection device for pipe fittings of the preferred embodiment of the present utility model;

[0025] Figure 6 is Figure 5 an enlarged view of part B of the mounting base of the surface defect detection device for pipe fittings shown.

[0026] Description of the reference numerals in the drawings: 1. Clamping mechanism; 11. Linear module; 12. Base; 121. Through groove; 122. Idler shaft; 123. Idler wheel; 13. Rotating shaft; 14. Inner support shaft; 15. Jaw; 16. Driving assembly; 161. Servo motor; 2. Photographing mechanism; 21. Frame; 211. Support column; 212. First locking clamp; 213. Support base; 214. Installation groove; 215. Telescopic cylinder; 216. Mounting seat; 217. Cross shaft; 218. Second locking clamp; 219. Slide; 22. Strip light source; 23. Line scan camera. Detailed implementation mode

[0027] The present utility model will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments cited are not intended to limit the present utility model.

[0028] Embodiment 1

[0029] Referring to Figures 1-6 As shown, a pipe surface defect detection device of the present utility model includes

[0030] A clamping mechanism 1, the clamping mechanism 1 includes two linear modules 11 arranged oppositely, the output ends of the two linear modules 11 are respectively connected with a base 12, and a rotating shaft 13 parallel to the linear module 11 is respectively rotatably arranged on the two bases 12. The two rotating shafts 13 are coaxial, and the ends of the two rotating shafts 13 close to each other are respectively coaxially provided with an inner support shaft 14 and a jaw 15. The rotating shaft 13 connected with the jaw 15 is also connected with a driving assembly 16 for driving it to rotate;

[0031] A photographing mechanism 2, the photographing mechanism 2 includes a frame 21, the frame 21 is arranged on one side of the clamping mechanism 1, and a strip light source 22 and a line scan camera 23 are respectively arranged on the frame 21 towards the position between the inner support shaft 14 and the jaw 15.

[0032] Working principle: The feeding mechanism of the production line transports the pipe fittings to the detection station. After the pipe fittings arrive (i.e., reach the position between the inner support shaft 14 and the jaw 15), the two linear modules 11 drive the inner support shaft 14 and the jaw 15 to move towards each other, clamping and fixing the pipe fittings located between the inner support shaft 14 and the jaw 15 (during the movement, the jaw 15 first opens and then clamps the pipe fittings). Then, the driving assembly 16 drives the jaw 15 to rotate, thereby driving the pipe fittings to rotate. The line scan camera 23 located above the pipe fittings takes pictures of the surface of the rotating pipe fittings, so as to obtain a complete image of the surface of the pipe fittings. Finally, the image information is transmitted to the image detection device for identification and detection and the detection result is output. The feeding device transports the detected pipe fittings to the corresponding conveyor line according to the detection result.

[0033] Specifically, when the material taking device (which can be a material taking manipulator) takes materials, it first clamps the pipe fittings that have completed the detection, then the clamping jaws 15 are released, and the two linear modules 11 drive the inner support shaft 14 and the clamping jaws 15 to move away from each other to release the pipe fittings. Then, the material taking device transports the pipe fittings to the target position.

[0034] Referring to Figure 2 and Figure 3 As shown, further, the driving component 16 includes a servo motor 161. The servo motor 161 is arranged on the base 12 connected with the clamping jaws 15, and the servo motor 161 drives the rotating shaft 13 to rotate through a synchronous belt component. Specifically, a driving wheel is coaxially connected to the output shaft of the servo motor 161, and the driving wheel is connected to a driven wheel connected to the rotating shaft 13 through a synchronous belt. In this way, the servo motor 161 can drive the clamping jaws 15 to rotate.

[0035] Further, the image detection device can be a PC, and with the cooperation of the controller, it can realize the automatic control of each part of this detection device.

[0036] Further, a through groove 121 is arranged on the base 12 on one side of the synchronous belt component. An idler shaft 122 is arranged in the through groove 121, and an idler wheel 123 is rotatably connected to the idler shaft 122. The circumferential surface of the idler wheel 123 tightly presses the synchronous belt of the synchronous belt component. Specifically, the position of the through groove 121 corresponds to the position of the section of the synchronous belt between the inner support shaft 14 and the clamping jaws 15. The idler shaft 122 can be adjusted in position along the through groove 121, so as to adjust the pressing degree of the idler wheel 123 on the synchronous belt, so as to ensure that the synchronous belt is always in a tensioned state.

[0037] Further, one end of the inner support shaft 14 is conical, and the other end is vertically connected with a base. A plurality of connection holes are vertically opened on the base and are connected to the rotating shaft 13 through bolts. It can be imagined that the inner support shaft 14 with a certain taper at the end can be applicable to a variety of pipe fittings with different inner diameters, and can ensure the stability when the pipe fittings are clamped, ensuring the smooth progress of the detection process.

[0038] Further, a through hole is respectively opened on the two bases 12. The two through holes are coaxial, and bearing seats are coaxially arranged in the two through holes. The two rotating shafts 13 are respectively rotatably connected to the two bearing seats through bearings.

[0039] Referring to Figure 4 、 Figure 5 and Figure 6As shown in the figure, further, the frame 21 includes two support columns 211 arranged in parallel. First locking clamps 212 are respectively provided on the two support columns 211. On one side of the two first locking clamps 212 close to each other, a support seat 213 is respectively provided. Both ends of the strip light source 22 are respectively connected to the two support seats 213. Specifically, the position of the first locking clamp 212 on the support column 211 can be adjusted, so as to realize the adjustment of the position of the strip light source 22, which is convenient for the installation and debugging of the equipment. Specifically, arc-shaped installation grooves 214 are provided on the installation surfaces of the two support seats 213. A plurality of installation holes arranged along the extension direction of the installation groove 214 are respectively provided at both ends of the strip light source 22. When the angle of the strip light source 22 needs to be adjusted, rotate the strip light source 22, and the installation holes can move within a certain range along the installation groove 214, and the fastening of the strip light source 22 can be realized without additional drilling, which is very convenient.

[0040] Further, a mounting plate is vertically connected between the two support columns 211. A telescopic cylinder 215 is connected to the middle position of the mounting plate. The output end of the telescopic cylinder 215 is connected to a mounting seat 216. The line scan camera 23 is installed on the mounting seat 216.

[0041] Further, the mounting seat 216 includes a base. A horizontal shaft 217 parallel to the mounting plate is provided on the base. A second locking clamp 218 is connected to the horizontal shaft 217, and a sliding seat 219 perpendicular to the horizontal shaft is provided on the second locking clamp. The line scan camera 23 is connected to the sliding seat 219. Specifically, the mounting plate can be adjusted in position along the support column 211, so as to realize a large-range adjustment of the height of the line scan camera 23. And when the mounting plate is fixed, the height of the line scan camera 23 can also be adjusted in a small range through the telescopic cylinder 215, which is convenient for installation and ensures the position accuracy of the camera. At the same time, the second locking clamp 218 can rotate around the horizontal shaft 217 to realize the adjustment of the angle of the line scan camera 23. Cooperating with the linear fine adjustment of the sliding seat 219, it is ensured that the line scan camera 23 can be adjusted to the best height and angle, which is beneficial to the shooting effect of the camera.

[0042] Further, a housing is provided on the mounting seat 216. The line scan camera 23 is arranged in the housing. The housing plays a role in protecting the line scan camera 23.

[0043] Embodiment 2

[0044] The present utility model also discloses a production line, including the pipe surface defect detection device as in Embodiment 1.

[0045] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the creation of the present utility model.

Claims

1. A pipe surface defect detection device, characterized in that: include: The clamping mechanism comprises two linear modules arranged opposite to each other, the output ends of the two linear modules are respectively connected to a base, a rotating shaft parallel to the linear module is rotatably arranged on the two bases, the two rotating shafts are coaxial and one end of the two rotating shafts close to each other is coaxially arranged with an inner support shaft and a clamping claw, and the rotating shaft connected to the clamping claw is also connected to a driving component for driving the rotation thereof; The photographing mechanism comprises a frame, the frame is arranged on one side of the clamping mechanism, and a strip light source and a line scanning camera facing the position between the inner support shaft and the clamping claws are respectively arranged on the frame.

2. The pipe surface defect detection device according to claim 1, characterized in that: The driving assembly comprises a servo motor, which is arranged on the base connected with the clamping jaws, and the servo motor drives the rotating shaft to rotate through a synchronous belt assembly.

3. The pipe surface defect detection device according to claim 2, characterized in that: The base is provided with a through slot located at one side of the synchronous belt assembly, an idler wheel shaft is provided in the through slot, an idler wheel is rotatably connected to the idler wheel shaft, and the circumferential surface of the idler wheel presses the synchronous belt of the synchronous belt assembly.

4. The pipe surface defect detection device according to claim 1, characterized in that: One end of the inner support shaft is conical, and the other end is vertically connected to a base. A plurality of connecting holes are vertically opened on the base and connected to the rotating shaft through bolts.

5. The pipe surface defect detection device according to claim 1, characterized in that: A through hole is respectively opened on the two bases, the two through holes are coaxial, and bearing seats are coaxially arranged in the two through holes. The two rotating shafts are rotatably connected to the two bearing seats through bearings.

6. The pipe surface defect detection device according to claim 1, characterized in that: The frame includes two parallel supporting columns, each of which is provided with a first locking clamp, and each of which is provided with a supporting seat on one side of the two first locking clamps close to each other. Both ends of the strip light source are connected to the two supporting seats.

7. The pipe surface defect detection device according to claim 6, characterized in that: A mounting plate is vertically connected between the two support columns, a telescopic cylinder is connected to the middle of the mounting plate, an output end of the telescopic cylinder is connected to a mounting seat, and the line scan camera is mounted on the mounting seat.

8. The pipe surface defect detection device according to claim 7, characterized in that: The mounting seat includes a base, a transverse axis parallel to the mounting plate is arranged on the base, a second locking clamp is connected to the transverse axis, and a slide perpendicular to the transverse axis is arranged on the second locking clamp, and the line scan camera is connected to the slide.

9. The pipe surface defect detection device according to claim 7, characterized in that: A cover shell is arranged on the mounting seat, and the line scan camera is arranged in the cover shell.

10. A production line, characterized in that: It comprises a pipe surface defect detection device as described in any one of claims 1 to 9.

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