A tube stock detection apparatus

Abstract

The pipe detection equipment disclosed by the application comprises a base, a pipe driving mechanism and a conveying mechanism. The top of the base is provided with a workbench, and the workbench is provided with a support structure. The pipe driving mechanism comprises a driving center, a driven center and a rotary motor. The rotary motor shaft is connected with the connecting part of the driving center. The conveying mechanism comprises a gantry and a first screw motor. The gantry is slidingly connected to the base, and the sliding block of the first screw motor is connected with the gantry. The gantry is provided with a first material taking device and an outer surface detection device. The outer surface detection device comprises a character detection mechanism, a rib height detection mechanism and an outer diameter detection mechanism. The pipe body is positioned and rotated, and the translation measurement device is used to comprehensively measure the outer diameter of the outer surface of the pipe body, the rib height and the visual detection. The application is suitable for the detection of batch pipe bodies, reduces the labor intensity of workers, saves time and effort, and improves the detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of pipe testing equipment technology, and in particular to a pipe testing equipment. Background Technology

[0002] Pipes are materials used to manufacture pipe fittings, also known as pipe materials. They are used in construction engineering, power plants, chemical plants, and other fields. Based on the materials used in their manufacture, pipe materials include plastic pipes, stainless steel pipes, fiberglass pipes, steel pipes, etc. Pipe materials play a role in connecting, sealing, and supporting in piping systems, and therefore have high requirements for dimensions. The inspection objects of pipe materials include length, outer diameter, inner diameter, wall thickness, and markings on the outer surface. If the outer wall of the pipe material has axial ribs, the height of the ribs also needs to be checked to ensure that the error values ​​of each dimension of the pipe material leaving the factory meet the standard requirements. The traditional method is to manually measure the error values ​​of each inspection object of the pipe material using measuring tools such as tape measures, vernier calipers, and micrometers to determine whether the error value exceeds the allowable range. Since manual inspection is not suitable for detecting errors in batches of pipes, external surface inspection devices are required for pipe inspection. Most existing external surface inspection devices are electrically controlled and use a transport mechanism to transfer multiple pipes so that each pipe can be measured by a length inspection mechanism, an inner diameter inspection mechanism, and an outer diameter inspection mechanism. Based on the measured outer and inner diameter dimensions, the wall thickness of the pipe is determined, and thus the error values ​​of each dimension of the pipe are obtained.

[0003] The inspection targets on the outer surface of the pipe include outer diameter, rib height, and visual inspection (marking characters on the outer surface). However, this inspection device can only inspect the outer diameter of a portion of the pipe, resulting in a small inspection range. It requires rotating and moving the pipe, and for measuring the rib height, workers need to hold the pipe and measure the rib height separately, and visually inspect the outer surface of the pipe for marking characters. This is labor-intensive, time-consuming, and inefficient. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the aforementioned technologies by designing a pipe inspection device. By positioning and rotating the pipe body and translating the measuring device, the device can comprehensively measure the outer diameter, rib height, and visual inspection of the outer surface of the pipe body. It is suitable for the inspection of batches of pipe bodies, reducing the labor intensity of workers, saving time and effort, and achieving high inspection efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a pipe material testing device, including a base, a pipe driving mechanism, and a conveying mechanism, wherein a working plate is provided on the top of the base, and a support structure for bearing the pipe material is provided on the working plate;

[0006] The pipe fitting driving mechanism includes an active centering member, a driven centering member, and a rotary motor. The active centering member and the driven centering member are rotatably connected to both ends of the side wall of the base and are laterally translated by a clamping rodless cylinder. The tips of the two are opposite each other and on the same axis. The rotating shaft of the rotary motor is connected to the connecting part of the active centering member. The conveying mechanism includes a gantry frame and a first lead screw motor. The gantry frame is slidably connected to the base. The working plate has a movable groove through which the two columns of the gantry frame can move. The slider of the first lead screw motor is connected to the gantry frame through a column connecting plate. A horizontal lead screw motor is provided on the crossbeam of the gantry frame. A vertical lead screw motor is provided on the slider of the horizontal lead screw motor. The slider of the vertical lead screw motor is provided with two symmetrically arranged first material picking devices and an outer surface detection device. The outer surface detection device includes a character detection mechanism, a rib height detection mechanism, and an outer diameter detection mechanism.

[0007] Preferably, the slider of the vertical lead screw motor is provided with a first detection mounting plate for mounting the outer surface detection device. The first material handling device includes a first pneumatic gripper and a first rodless cylinder that drives the first pneumatic gripper to move vertically. The two first rodless cylinders are respectively located on both sides of the first detection mounting plate.

[0008] Preferably, the character detection mechanism includes a character mounting frame, a camera, and two bar light sources. The camera is located on top of the character mounting frame, and the two bar light sources are tilted downwards and positioned opposite each other.

[0009] Preferably, the rib height detection mechanism includes a rib height dial indicator and a second rodless cylinder for driving the rib height dial indicator to move vertically. The moving end of the second rodless cylinder is provided with a rib height connecting block for mounting the rib height dial indicator. The rib height connecting block is provided with a rib height limiting sleeve for the movement of the probe of the rib height dial indicator. The bottom surface of the rib height limiting sleeve is in contact with the end of the probe of the rib height dial indicator. The bottom surface of the rib height limiting sleeve is provided with a rib height groove for the axial rib to pass through.

[0010] Preferably, the outer diameter detection mechanism includes an outer diameter dial indicator, an outer diameter reference component, and an outer diameter rodless cylinder that drives the outer diameter dial indicator to move closer to the outer diameter reference component. The probe of the outer diameter dial indicator corresponds to the outer diameter reference component and abuts against the outer wall of the pipe body. The first detection mounting plate is provided with an outer diameter mounting bracket for mounting the outer diameter detection mechanism and a third rodless cylinder that drives the outer diameter mounting bracket to move vertically.

[0011] Preferably, two second detection mounting plates are respectively provided at both ends of the side wall of the base near the tube drive mechanism. The active center member, the rotary motor, and the driven center member are respectively provided at the two second detection mounting plates. Any of the second detection mounting plates is slidably connected to the side wall of the base. A second lead screw motor is provided on the base, and the slider of the second lead screw motor is connected to the sliding second detection mounting plate.

[0012] Preferably, both of the second detection mounting plates are provided with wall thickness detection mechanisms, and the detection ends of the two wall thickness detection mechanisms are arranged opposite to each other. The wall thickness detection mechanism includes a wall thickness dial indicator, a wall thickness reference component, and a rodless cylinder for driving the probe of the wall thickness dial indicator to move closer to the wall thickness reference component. The probe of the wall thickness dial indicator corresponds to the wall thickness reference component and abuts against the inner and outer sides of the pipe wall of the pipe body. The second detection mounting plate is provided with a wall thickness mounting bracket for mounting the wall thickness detection mechanism and a fourth rodless cylinder for driving the wall thickness mounting bracket to move laterally.

[0013] Preferably, both of the second detection mounting plates are provided with an inner diameter detection mechanism, and the detection ends of the two inner diameter detection mechanisms are arranged opposite to each other. The inner diameter detection mechanism includes an inner micrometer, a lever assembly, and a rodless cylinder with an inclined top. The lever assembly is located at the inner micrometer away from its probe. The moving end of the rodless cylinder with an inclined top is connected to the lever assembly. The second detection mounting plate is provided with an inner diameter mounting plate for mounting the inner diameter detection mechanism and a fifth rodless cylinder for driving the inner diameter mounting plate to move laterally.

[0014] Preferably, the support structure includes a pipe limiting plate and at least two storage plates. Each storage plate has multiple placement slots evenly provided along the length direction of the pipe limiting plate, and the bottom inner wall of each placement slot has a positioning groove for axial reinforcement insertion. At least one length detection mechanism is provided on the side of the working plate away from the pipe limiting plate. The length detection mechanism includes a length dial indicator and a rodless cylinder for driving the length dial indicator to move laterally. The probe of the length dial indicator is provided with a measuring plate covering the end face of the pipe body. A length reference block corresponding to the length dial indicator is provided on the side of the working plate near the pipe limiting plate.

[0015] Preferably, the crossbeam of the gantry is slidably connected to a support frame and two second material handling devices on the side wall away from the first material handling device. The first detection mounting plate is provided with a support frame, which is slidably connected to the crossbeam of the gantry. The two second material handling devices are connected to the slider of the transverse lead screw motor through the support frame. The second material handling device includes a second pneumatic gripper and a sixth rodless cylinder that drives the second pneumatic gripper to move vertically. The two sixth rodless cylinders are respectively located on both sides of the support frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The conveying device moves the pipe body to the pipe fitting driving mechanism via the first material handling device. The tips of the active and driven centers can be used to clamp and position pipe bodies with different inner diameters. The active center is driven to rotate by a rotary motor, which in turn drives the pipe body being tested to rotate. Meanwhile, the transverse screw motor drives the outer surface inspection device to reciprocate along the crossbeam of the gantry, further expanding the inspection range of the outer surface inspection device on the pipe body. This eliminates the need for manual handling and movement of the pipe body. The equipment can comprehensively measure the outer diameter, rib height, and visual inspection of the outer surface of the pipe body. It is suitable for batch inspection of pipe bodies, reducing the labor intensity of workers, saving time and effort, and achieving high inspection efficiency. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an embodiment. Figure 1 ; Figure 2 This is a structural diagram of an embodiment. Figure 2 ; Figure 3 This is a cross-sectional view of an embodiment; Figure 4 This is a schematic diagram of the conveying mechanism; Figure 5 This is a schematic diagram of the structure of the first testing mounting plate; Figure 6 This is a schematic diagram of the structure of the second detection mounting plate.

[0018] In the diagram: 1. Pipe body; 2. Axial rib; 3. Base; 4. Electrical control box; 5. Working plate; 6. Support structure; 61. Pipe limiting plate; 62. Storage plate; 7. Active centering component; 8. Driven centering component; 9. Rotary motor; 10. Gantry frame; 11. First lead screw motor; 12. Movable groove; 13. Column connecting plate; 14. Horizontal lead screw motor; 15. Vertical lead screw motor; 16. First material handling device; 161. First air... 162. Moving gripper; 17. First rodless cylinder; 18. Second material handling device; 19. Second pneumatic gripper; 10. Sixth rodless cylinder; 11. Character detection mechanism; 12. Character mounting bracket; 13. Camera; 14. Bar light source; 15. Rib height detection mechanism; 161. Rib height dial indicator; 172. Second rodless cylinder; 28. Outer diameter detection mechanism; 29. ​​Outer diameter dial indicator; 202. Outer diameter reference component; 203. 21. Outer diameter rodless cylinder; 211. Wall thickness measuring mechanism; 211. Wall thickness dial indicator; 212. Wall thickness reference component; 213. Wall thickness rodless cylinder; 22. Inner diameter measuring mechanism; 221. Inner micrometer; 222. Lever assembly; 223. Angled rodless cylinder; 23. Length measuring mechanism; 231. Length dial indicator; 232. Length rodless cylinder; 24. First measuring mounting plate; 25. Second measuring mounting plate; 26. Rib height connection 27. Rib height limiting sleeve; 28. Rib height groove; 29. ​​Third rodless cylinder; 30. Second lead screw motor; 31. Fourth rodless cylinder; 32. Fifth rodless cylinder; 33. Placement groove; 34. Positioning groove; 35. Measuring plate; 36. Length reference block; 37. Support frame; 38. First housing; 39. Second housing; 40. Outer diameter mounting bracket; 41. Wall thickness mounting bracket; 42. Inner diameter mounting plate; 43. Clamping rodless cylinder. Detailed Implementation

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

[0020] refer to Figures 1 to 6A pipe material testing device includes a base 3, a conveying mechanism, and a pipe fitting driving mechanism. A working plate 5 is mounted on the top of the base 3. Movable grooves 12 extend through both sides of the working plate 5. A support structure 6 is mounted on the working plate 5. The support structure 6 includes a pipe limiting plate 61 and three storage plates 62. Each storage plate 62 has multiple placement grooves 33 evenly distributed along the length of the pipe limiting plate 61. The pipe limiting component is parallel to each storage plate 62. One storage plate 62 is close to the pipe limiting plate 61, while the other two storage plates 33 are positioned closer to the pipe limiting plate 61. The material plate 62 is far away from the pipe limiting plate 61. According to the length specification of the pipe body 1, one end of the pipe body 1 is placed against the pipe limiting plate 61 and the pipe body 1 is supported in the placement groove 33. The bottom inner wall of each placement groove 33 is provided with a positioning groove 34 for the axial rib 2 to be inserted, so as to guide the workers to pre-place the pipe body 1 with the axial rib 2 on the support structure 6 in the correct position. The pipe limiting plate 61 assists in aligning each pipe body 1 so that the conveying mechanism can move the pipe body 1.

[0021] An electrical control box 4 is installed on one side of the base 3. The electrical control box 4 contains a PLC controller, which can load control instructions into memory for storage and execution at any time. This is existing technology and will not be described in detail here.

[0022] The conveying mechanism includes a gantry frame 10 and a first lead screw motor 11. Column connecting plates 13 are installed at the bottom of the two columns of the gantry frame 10. The column connecting plates 13 are slidably connected to the base 3 via guide rails. A working plate 5 has a through-hole 12 for the movement of the two columns of the gantry frame 10. The first lead screw motor 11 is connected to and controlled by an electrical control box 4. The slider of the first lead screw motor 11 is connected to the gantry frame 10 via the column connecting plates 13. A horizontal lead screw motor 14 is installed on the crossbeam of the gantry frame 10. A vertical lead screw motor 15 is installed on the slider of the horizontal lead screw motor 14. Both the horizontal lead screw motor 14 and the vertical lead screw motor 15... The vertical screw motor 15 is connected to and controlled by the electrical control box 4. The slider of the vertical screw motor 15 is equipped with two symmetrically arranged first material picking devices 16 and an outer surface detection device. The slider of the vertical screw motor 15 is equipped with a first detection mounting plate 24 for mounting the outer surface detection device. The outer surface detection device includes a character detection mechanism 18, a rib height detection mechanism 19, and an outer diameter detection mechanism 20. The first detection mounting plate 24 is covered with a first housing 38 to protect the first material picking device 16 and the outer surface detection device. The bottom of the first housing 38 is open to allow the material picking action of the first material picking device 16 and the detection operation of the outer surface detection device.

[0023] The first material handling device 16 includes a first pneumatic gripper 161 and a first rodless cylinder 162 that drives the first pneumatic gripper 161 to move vertically. The two first rodless cylinders 162 are located on both sides of the first detection mounting plate 24. The character detection mechanism 18, the rib height detection mechanism 19, and the outer diameter detection mechanism 20 are staggered between the two first pneumatic grippers 161 on the first detection mounting plate 24 to avoid mutual interference. The first pneumatic gripper 161 and the first rodless cylinder 162 are both connected to and controlled by the electrical control box 4 through solenoid valves to drive the first pneumatic gripper 161 to pick up and release the pipe body 1.

[0024] The side wall of the crossbeam of the gantry frame 10 away from the first material handling device 16 is slidably connected to a support frame 37 and two second material handling devices 17 via guide rails. The first detection mounting plate 24 is provided with a support frame 37, which is slidably connected to the crossbeam of the gantry frame 10. The two second material handling devices 17 are connected to the slider of the transverse screw motor 14 via the support frame 37. The second material handling device 17 includes a second pneumatic gripper 171 and a sixth rodless cylinder 172 that drives the second pneumatic gripper 171 to move vertically. The two sixth rodless cylinders 172 are located on both sides of the support frame 37. The second pneumatic gripper 171 and the sixth rodless cylinder 172 are both connected to and controlled by the electrical control box 4 via solenoid valves to drive the second pneumatic gripper 171 to pick up and release the pipe body 1.

[0025] Two length detection mechanisms 23 are provided on the working plate 5. The two length detection mechanisms 23 are respectively arranged next to two storage plates 62 away from the pipe limiting plate 61. Additional storage plates 62 and length detection mechanisms 23 can be added as needed. The length detection mechanism 23 includes a length dial indicator 231 and a length rodless cylinder 232 that drives the length dial indicator 231 to move laterally. The probe of the length dial indicator 231 is provided with a measuring plate 35 covering the end face of the pipe body 1. A length reference block 36 corresponding to the length dial indicator 231 is provided on the side of the working plate 5 near the pipe limiting plate 61. The length rodless cylinder 232 is connected to and controlled by the electrical control box 4 through a solenoid valve.

[0026] The first material handling device 16 and the outer surface detection device are respectively translated in the Y, X, and Z directions by the first lead screw motor 11, the horizontal lead screw motor 14, and the vertical lead screw motor 15. All three motors are lead screw servo motors, enabling three-dimensional movement of the first material handling device 16, the second material handling device 17, and the outer surface detection device with controllable stroke. This is to cooperate with the first material handling device 16 to pick up the tube body 1 from the support structure 6 and move it to the length detection mechanism 23, which is compatible with the specifications of the tube body 1. During this process, the second material handling device 17 picks up another tube body 1 from the support structure 6 and moves it to the picking position on the support mechanism. The length rodless cylinder 232 drives the measuring plate 35 to approach and contact the end face of the tube body 1 to measure the length error value of the tube body 1.

[0027] Two second detection mounting plates 25 are respectively provided at both ends of the side wall of the base 3 near the pipe fitting driving mechanism. Either second detection mounting plate 25 is slidably connected to the side wall of the base 3. A second lead screw motor 30 is provided on the base 3. The slider of the second lead screw motor 30 is connected to the slidable second detection mounting plate 25. The second lead screw is connected to and controlled by the electrical control box 4. The pipe fitting driving mechanism includes an active center member 7, a driven center member 8, and a rotary motor 9. Both the active center member 7 and the driven center member 8 are rotatably connected to both ends of the side wall of the base 3 and are laterally translated by a clamping rodless cylinder 43. The tips of the two are opposite each other and on the same axis. The rotating shaft of the rotary motor 9 is connected to the connecting part of the active center member 7. The rotary motor 9 is connected to and controlled by the electrical control box 4. The active center member 7, the rotary motor 9, and the driven center member 8 are respectively located at the two second detection mounting plates 25, making the pipe fitting driving mechanism suitable for clamping, positioning, and rotating pipe bodies 1 of different lengths.

[0028] The character detection mechanism 18 includes a character mounting frame 181, a camera 182, and two bar light sources 183. The camera 182 is located on top of the character mounting frame 181, and the two bar light sources 183 are tilted downwards and positioned opposite each other. The camera 182 and the two bar light sources 183 are connected to and controlled by the electrical control box 4. The two bar light sources 183 provide side lighting to the positioned and rotating pipe body 1 so that the camera 182 can collect images of the outer surface of the pipe body 1 for visual inspection. The camera 182 can also be connected to an external display screen through the electrical control box 4, so that the staff can observe the outer surface of the pipe body 1 more intuitively from the image on the external display screen.

[0029] The rib height detection mechanism 19 includes a rib height dial indicator 191 and a second rodless cylinder 192 that drives the rib height dial indicator 191 to move vertically. The moving end of the second rodless cylinder 192 is provided with a rib height connecting block 26 for mounting the rib height dial indicator 191. The second rodless cylinder 192 is connected to and controlled by the electrical control box 4 through a solenoid valve. The rib height connecting block 26 is provided with a rib height limiting sleeve 27 for the movement of the probe of the rib height dial indicator 191. The bottom surface of the rib height limiting sleeve 27 is in contact with the end of the probe of the rib height dial indicator 191. The bottom surface of the rib height limiting sleeve 27 is provided with a rib height groove 28 for the axial rib 2 to pass through. The displacement change of the probe of the rib height dial indicator 191 in the rib height groove 28 is fed back by the rib height dial indicator 191 to measure the rib height of the axial rib 2.

[0030] The outer diameter measuring mechanism 20 includes an outer diameter dial indicator 201, an outer diameter reference component 202, and an outer diameter rodless cylinder 203 that drives the outer diameter dial indicator 201 to move towards the outer diameter reference component 202. The first measuring mounting plate 24 is provided with an outer diameter mounting bracket 40 for mounting the outer diameter measuring mechanism 20 and a third rodless cylinder 29 that drives the outer diameter mounting bracket 40 to move vertically. The outer diameter rodless cylinder 203 and the third rodless cylinder 29 are both connected to and controlled by the electrical control box 4 through solenoid valves. The third rodless cylinder 29 drives the outer diameter measuring mechanism 20 to move to the pipe body 1 to be tested. The outer diameter rodless cylinder 203 drives the outer diameter dial indicator 201 to approach the outer diameter reference component 202. The probe of the outer diameter dial indicator 201 corresponds to the outer diameter reference component 202 and abuts against the outer wall of the pipe body 1 to measure the outer diameter error value of the pipe body 1.

[0031] Both second detection mounting plates 25 are equipped with a wall thickness detection mechanism 21 and an inner diameter detection mechanism 22. Both second detection mounting plates 25 are covered with a second housing 39, and the opposite sides of the two second housings 39 are connected.

[0032] Two wall thickness measuring mechanisms 21 are arranged with their measuring ends facing each other. Each wall thickness measuring mechanism 21 includes a wall thickness dial gauge 211, a wall thickness reference component 212, and a rodless cylinder 213 that drives the probe of the wall thickness dial gauge 211 to move closer to the wall thickness reference component 212. The probe of the wall thickness dial gauge 211 corresponds to the wall thickness reference component 212 and respectively abuts against the inner and outer sides of the pipe wall of the pipe body 1. A wall thickness mounting bracket 41 for mounting the wall thickness measuring mechanism 21 and a drive wall thickness mounting bracket 41 are provided on the second measuring mounting plate 25. The fourth rodless cylinder 31, which moves laterally on the frame 41, and the fourth rodless cylinder 31 and the wall thickness rodless cylinder 213 are both connected to and controlled by the electrical control box 4 through solenoid valves. The fourth rodless cylinder 31 drives the wall thickness detection mechanism 21 to move to the pipe body 1 held by the two wall thickness reference pieces 212. The wall thickness rodless cylinder 213 drives the probe of the wall thickness dial indicator 211 to move vertically and cooperate with the wall thickness reference pieces 212 to abut against the inner and outer sides of the pipe wall of the pipe body 1 in order to measure the wall thickness error value of the pipe body 1.

[0033] Two internal diameter measuring mechanisms 22 are arranged with their measuring ends facing each other. Each internal diameter measuring mechanism 22 includes an internal micrometer 221, a lever assembly 222, and a rodless cylinder 223. The lever assembly 222 is located away from the measuring head of the internal micrometer 221. The internal micrometer 221 is used for precise internal dimension measurement, which is existing technology and will not be described in detail here. The moving end of the rodless cylinder 223 is connected to the lever assembly 222. The second measuring mounting plate 25 is equipped with an internal diameter mounting plate 42 for mounting the internal diameter measuring mechanism 22, and a fifth rodless cylinder 32 for driving the internal diameter mounting plate 42 to move laterally. The fifth rodless cylinder 32 and the inclined rodless cylinder 223 are both connected to and controlled by the electrical control box 4 through solenoid valves. After the wall thickness of the pipe body is detected, the first material handling device 16 grabs it and moves it between the two inner diameter detection mechanisms 22. The fifth rodless cylinder 32 drives the probe of the inner micrometer 221 to be inserted into the inner hole of the pipe body 1. The lever assembly 222 is driven by the inclined rodless cylinder 223 to drive the probe of the inner micrometer 221 to swing within the radial section of the hole, thereby measuring the inner diameter of the pipe body 1.

[0034] A method for using a pipe material testing device includes the following steps: S1. Multiple pipe bodies 1 of different specifications are fed into the support structure 6, and one end face of each pipe body 1 is in contact with the pipe limiting plate 61. S2. The conveying device takes the previous pipe body 1 from the support structure 6 and moves it to the length detection mechanism 23 that matches it, and moves the next pipe body 1 to the pick-up point of the support structure 6. S3. The length detection mechanism 23 is preset to zero position. The measuring plate 35 and the length reference block 36 respectively clamp the two ends of the standard part and zero the length dial indicator 231 (the standard part is the calibration object corresponding to the specification of the pipe body 1 being measured). When the first material taking device 16 moves the pipe body 1 to the length detection mechanism 23, the length rodless cylinder 232 drives the measuring plate 35 to contact one end of the pipe body 1, and the other end of the pipe body 1 to contact the length reference block 36. The reading of the length dial indicator 231 is D1, where D1 is the length error value between the pipe body 1 and the standard part. If |D1|≤D (D is the preset allowable error value), the length of the pipe body 1 meets the standard requirements. If |D1|≥D, the length of the pipe body 1 does not meet the standard requirements. S4. The conveying device takes the pipe body 1 from the length detection mechanism 23 through the first material taking device 16 and moves it to the pipe driving mechanism. The driven tip 8 moves closer to the active tip 7 through the second screw motor 30 so that the tips of the active tip 7 and the driven tip 8 are inserted into the two ports of the pipe body 1. The rotary motor 9 is started to drive the clamped pipe body 1 to rotate. S5, the character detection mechanism 18 works to detect the appearance of the pipe body 1. Two strip light sources 183 illuminate the rotating pipe body 1 from the side. The conveying device moves the character detection mechanism 18 through the transverse screw motor 14, so that the camera 182 can fully detect the outer surface of the pipe body 1. S6. The rib height detection mechanism 19 presets the zero position. When the bottom surface of the rib height limiting sleeve 27 is in contact with the probe end of the rib height dial indicator 191, the rib height dial indicator 191 is zeroed. The rib height detection mechanism 19 then operates. When the axial rib 2 being measured corresponds to the rib height limiting sleeve 27, the second rodless cylinder 192 drives the rib height dial indicator 191 to move vertically downward. The axial rib 2 enters the rib height groove 28 and drives the side head of the rib height dial indicator 191 until the bottom surface of the rib height limiting sleeve 27 is in contact with the outer wall of the pipe body 1. The reading of the dial indicator is D2, where D2 is the rib height of the axial rib 2 of the pipe body 1. After that, the rib height detection mechanism 19 resets and prepares for the measurement of the rib height of the next axial rib 2. The position of each axial rib 2 on the pipe body 1 is adjusted sequentially by the pipe fitting driving mechanism, so that the rib height detection mechanism 19 sequentially detects the rib height of each axial rib 2 on the pipe body 1. S7. The outer diameter measuring mechanism 20 presets a zero position. The rodless cylinder 203 drives the probe of the outer diameter dial indicator 201 to move, aligning it with the outer diameter reference piece 202 to clamp the outer wall of the standard part. The outer diameter dial indicator 201 is then zeroed. The outer diameter measuring mechanism 20 then operates, measuring the outer diameter of the pipe body 1. The third rodless cylinder 29 moves the outer diameter dial indicator 201 and the outer diameter reference piece 202 to the pipe body 1, where the probe of the outer diameter dial indicator 201 is clamped by the outer diameter reference piece 202. The reading of the outer diameter dial indicator 201 on the pipe body 1 is R1, where R1 is the outer diameter error between the pipe body 1 and the standard part. If |R1|≤R (R is the preset allowable error value), the outer diameter of the pipe body 1 meets the standard requirements. If |R1|≥R, the outer diameter of the pipe body 1 does not meet the standard requirements. The conveying device moves the outer diameter detection mechanism 20 by the transverse screw motor 14, so that the outer diameter detection mechanism 20 can measure the outer diameter of each part of the pipe body 1 more comprehensively. S8. The wall thickness detection mechanism 21 presets a zero position. The wall thickness dial indicator 211 is driven downwards by the rodless cylinder 213 to engage with the wall thickness reference piece 212, which clamps the pipe wall of the standard component and zeroes the dial indicator 211. After all the test objects on the outer surface of the pipe are tested, the pipe fitting drive mechanism stops and resets. The conveying device, through the first material handling device 16, picks up the pipe body 1 from the pipe fitting drive mechanism and transfers it between the two wall thickness detection mechanisms 21. One end of the pipe body 1 is fitted with a wall thickness reference piece 212. The two wall thickness detection mechanisms 21 then test the pipe body 1. The pipe wall is clamped, and the reading of the wall thickness dial indicator 211 is T1. T1 is the wall thickness error value between the pipe body 1 and the standard part. If |T1|≤T (T is the preset allowable error value), the wall thickness of the pipe body 1 meets the standard requirements. If |T1|≥T, the wall thickness of the pipe body 1 does not meet the standard requirements. The corresponding wall thickness dial indicator 211 and wall thickness reference part 212 are driven to translate by the fourth rodless cylinder 31, and the measurement position of the wall thickness detection mechanism 21 on the pipe wall is adjusted, so that the wall thickness detection mechanism 21 can measure the wall thickness of each part of the pipe body 1 more comprehensively. S9. The inner diameter measuring mechanism 22 presets the zero position, inserts the probe of the inner micrometer 221 into the standard part, supports the probe of the inner micrometer 221 on the inner surface of the hole to be measured, and drives the lever assembly 222 to move through the inclined cylinder, so that the probe of the inner micrometer 221 swings in the radial section of the hole, and selects the smallest reading as r1, where r1 is the inner diameter of the pipe body 1.

[0035] Through the present invention and the above-described method, when using the pipe inspection equipment for inspection operations, the inspection range of the outer surface inspection device for the pipe body 1 is further expanded by translating the outer surface measuring device and positioning and rotating the pipe body 1. There is no need for staff to manually pick up and move the pipe body 1. The pipe inspection equipment can comprehensively measure the outer diameter, rib height, and visual inspection of the outer surface of the pipe body 1, as well as detect the length, wall thickness, and inner diameter of the pipe body 1. It is suitable for the inspection of batches of pipe bodies 1, with rich inspection functions, reducing the labor intensity of staff, saving time and effort, and improving inspection efficiency.

[0036] In addition, in the implementation of this invention, each rodless cylinder and each lead screw motor can be replaced with a telescopic cylinder, hydraulic cylinder, electric push rod, or other translational and telescopic drive device, all of which can achieve the same effect.

[0037] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A pipe material testing device, characterized in that: It includes a base (3), a pipe fitting driving mechanism, and a conveying mechanism. The top of the base (3) is provided with a working plate (5), and the working plate (5) is provided with a support structure (6) for supporting the pipe body (1). The pipe fitting driving mechanism includes an active centering member (7), a driven centering member (8), and a rotary motor (9). The active centering member (7) and the driven centering member (8) are rotatably connected to both ends of the side wall of the base (3) and are laterally translated by a clamping rodless cylinder (43). The tips of the two are opposite to each other and on the same axis. The rotating shaft of the rotary motor (9) is connected to the connecting part of the active centering member (7). The conveying mechanism includes a gantry frame (10) and a first lead screw motor (11). The gantry frame (10) is slidably connected to the base (3). The working plate (5) has a through groove (12) for the two columns of the gantry frame (10) to move. The slider of the first lead screw motor (11) is connected to the gantry frame (10) through a column connecting plate (13). A horizontal lead screw motor (14) is provided on the crossbeam of the gantry frame (10). A vertical lead screw motor (15) is provided on the slider of the horizontal lead screw motor (14). The slider of the vertical lead screw motor (15) is provided with two symmetrically arranged first material picking devices (16) and an outer surface detection device. The outer surface detection device includes a character detection mechanism (18), a rib height detection mechanism (19), and an outer diameter detection mechanism (20).

2. The pipe material testing equipment according to claim 1, characterized in that: The slider of the vertical lead screw motor (15) is provided with a first detection mounting plate (24) for mounting the outer surface detection device. The first material handling device (16) includes a first pneumatic gripper (161) and a first rodless cylinder (162) that drives the first pneumatic gripper (161) to move vertically. The two first rodless cylinders (162) are located on both sides of the first detection mounting plate (24).

3. The pipe testing equipment according to claim 2, characterized in that: The character detection mechanism (18) includes a character mounting frame (181), a camera (182), and two bar light sources (183). The camera (182) is located on the top of the character mounting frame (181), and the two bar light sources (183) are tilted downwards and arranged opposite each other.

4. The pipe material testing equipment according to claim 2, characterized in that: The rib height detection mechanism (19) includes a rib height dial indicator (191) and a second rodless cylinder (192) for driving the rib height dial indicator (191) to move vertically. The moving end of the second rodless cylinder (192) is provided with a rib height connecting block (26) for mounting the rib height dial indicator (191). The rib height connecting block (26) is provided with a rib height limiting sleeve (27) for the movement of the probe of the rib height dial indicator (191). The bottom surface of the rib height limiting sleeve (27) is in contact with the end of the probe of the rib height dial indicator (191). The bottom surface of the rib height limiting sleeve (27) is provided with a rib height groove (28) for the axial rib (2) to pass through.

5. The pipe testing equipment according to claim 2, characterized in that: The outer diameter detection mechanism (20) includes an outer diameter dial indicator (201), an outer diameter reference component (202), and an outer diameter rodless cylinder (203) that drives the outer diameter dial indicator (201) to move closer to the outer diameter reference component (202). The probe of the outer diameter dial indicator (201) corresponds to the outer diameter reference component (202) and abuts against the outer wall of the pipe body (1). The first detection mounting plate (24) is provided with an outer diameter mounting bracket (40) for mounting the outer diameter detection mechanism (20) and a third rodless cylinder (29) that drives the outer diameter mounting bracket (40) to move vertically.

6. The pipe material testing equipment according to claim 1, characterized in that: Two second detection mounting plates (25) are respectively provided at both ends of the side wall near the pipe driving mechanism of the base (3). The active center member (7), the rotary motor (9), and the driven center member (8) are respectively provided at the two second detection mounting plates (25). Any one of the second detection mounting plates (25) is slidably connected to the side wall of the base (3). A second lead screw motor (30) is provided on the base (3). The slider of the second lead screw motor (30) is connected to the sliding second detection mounting plate (25).

7. The pipe testing equipment according to claim 6, characterized in that: Both of the second detection mounting plates (25) are provided with wall thickness detection mechanisms (21). The detection ends of the two wall thickness detection mechanisms (21) are arranged opposite to each other. The wall thickness detection mechanism (21) includes a wall thickness dial indicator (211), a wall thickness reference component (212), and a wall thickness rodless cylinder (213) that drives the probe of the wall thickness dial indicator (211) to move closer to the wall thickness reference component (212). The probe of the wall thickness dial indicator (211) corresponds to the wall thickness reference component (212) and abuts against the inner and outer sides of the pipe wall of the pipe body (1). The second detection mounting plate (25) is provided with a wall thickness mounting bracket (41) for mounting the wall thickness detection mechanism (21) and a fourth rodless cylinder (31) that drives the wall thickness mounting bracket (41) to move laterally.

8. The pipe testing equipment according to claim 6, characterized in that: Both of the second detection mounting plates (25) are provided with an inner diameter detection mechanism (22). The detection ends of the two inner diameter detection mechanisms (22) are arranged opposite to each other. The inner diameter detection mechanism (22) includes an inner micrometer (221), a lever assembly (222), and a rodless cylinder (223). The lever assembly (222) is located at the inner micrometer (221) away from its probe. The moving end of the rodless cylinder (223) is connected to the lever assembly (222). The second detection mounting plate (25) is provided with an inner diameter mounting plate (42) for mounting the inner diameter detection mechanism (22) and a fifth rodless cylinder (32) for driving the inner diameter mounting plate (42) to move laterally.

9. The pipe testing equipment according to claim 1, characterized in that: The support structure (6) includes a pipe limiting plate (61) and at least two storage plates (62). Each storage plate (62) is provided with a plurality of placement grooves (33) evenly along the length direction of the pipe limiting plate (61). The bottom inner wall of each placement groove (33) is provided with a positioning groove (34) for the axial rib (2) to be inserted. At least one length detection mechanism (23) is provided on the side of the working plate (5) away from the pipe limiting plate (61). The length detection mechanism (23) includes a length dial indicator (231) and a length rodless cylinder (232) for driving the length dial indicator (231) to move laterally. The probe of the length dial indicator (231) is provided with a measuring plate (35) covering the end face of the pipe body (1). A length reference block (36) corresponding to the length dial indicator (231) is provided on the side of the working plate (5) near the pipe limiting plate (61).

10. The pipe material testing equipment according to claim 2, characterized in that: The crossbeam of the gantry (10) is slidably connected to a support frame (37) and two second material picking devices (17) on the side wall away from the first material picking device (16). The first detection mounting plate (24) is provided with a support frame (37). The support frame (37) is slidably connected to the crossbeam of the gantry (10). The two second material picking devices (17) are connected to the slider of the transverse screw motor (14) through the support frame (37). The second material handling device (17) includes a second pneumatic gripper (171) and a sixth rodless cylinder (172) that drives the second pneumatic gripper (171) to move vertically. The two sixth rodless cylinders (172) are located on both sides of the support frame (37).

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