A pipe feeding inspection process and equipment

Abstract

This invention provides a pipe feeding inspection process and equipment. The equipment includes a base and a vertical plate. An outer cover is fixedly installed to the bottom side of the vertical plate via a mounting bracket. A cylinder is fixedly installed in the middle of the outer cover, and a support seat is fixedly installed inside the cylinder. An annular cavity is formed between the inner wall of the outer cover and the outer wall of the cylinder. A centering mechanism is installed in the annular cavity. An inner diameter detection unit is located at the axis of the cylinder and is installed on the top surface of the support seat. Outer diameter detection units are arranged in a ring array on the inner wall of the cylinder. A height adjustment mechanism is installed on the side wall of the vertical plate, and a pressure plate is connected to the output end of the height adjustment mechanism. A length detection unit is installed on the top side of the vertical plate. The process includes the following steps: sampling, visual inspection, automatic and manual inspection of inner and outer diameters, automatic and manual inspection of length, and hardness inspection. By automatically inspecting the inner diameter, outer diameter, and length, and combining this with manual verification, the two sets of data are compared to improve the reliability of the inspection.

Description

Technical Field

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

[0002] As a long, strip-shaped material with a hollow cross-section, tubing is widely used in industrial manufacturing due to its lightweight, high strength, and functional adaptability. For example, in the processing of bicycle racks, tubing is a core structural component, and its dimensional accuracy directly affects the product's assembly compatibility, mechanical properties, and safety. Therefore, dimensional inspection of tubing upon arrival at the factory is a crucial step in quality control.

[0003] In traditional testing techniques, inspectors typically rely on tools such as calipers, tape measures, and thickness gauges to manually measure key dimensions of pipes, including their inner and outer diameters, wall thickness, and length. However, this approach has significant limitations: over-reliance on human experience makes it difficult to standardize testing criteria; differences in measurement techniques among different operators can lead to data deviations; subjective errors are unavoidable; and factors such as fatigue, ambient lighting, or tool wear can all affect measurement accuracy, resulting in quality risks. This traditional testing method is no longer sufficient to meet the needs of modern manufacturing. Summary of the Invention

[0004] To address the technical problem that subjective errors are easily introduced by manual inspection alone, this invention provides a pipe material feeding inspection process and equipment.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0006] This invention provides a pipe feeding inspection device, including a base with a vertical plate fixedly installed on the top of the base; it also includes: an outer cover, which is fixedly installed to the bottom side of the vertical plate via a mounting bracket, a cylinder is fixedly installed in the middle of the outer cover, and a support seat is fixedly installed inside the cylinder; an annular cavity is formed between the inner wall of the outer cover and the outer wall of the cylinder; a centering mechanism, which is installed in the annular cavity and extends into the cylinder; an inner diameter detection part and an outer diameter detection part, wherein the inner diameter detection part is located at the axis of the cylinder and is installed on the top surface of the support seat, and the outer diameter detection part is located above the support seat, and there are multiple outer diameter detection parts arranged in a ring array on the inner wall of the cylinder; a height adjustment mechanism, which is installed on the side wall of the vertical plate, and the output end of the height adjustment mechanism is connected to a pressure plate, which is located above the cylinder; and a length detection part, which is installed on the top side of the vertical plate and is located directly above the pressure plate.

[0007] Preferably, the centering mechanism includes multiple radial pushing components; the multiple radial pushing components are arranged in a ring array and respectively inserted into the annular cavity. Each radial pushing component includes a first wedge block and a second wedge block. The bottom of the first wedge block and the top side of the second wedge block are respectively provided with a first wedge surface and a second wedge surface, and the first wedge surface and the second wedge surface are adapted to fit together. One side of the first wedge block is elastically connected to the outer wall of the cylinder by a second spring. A push rod is connected to one side of the first wedge block. A connecting rod is fixedly installed at the bottom of the second wedge surface, and a pushing mechanism is connected to the bottom of the connecting rod.

[0008] Preferably, the push rod includes a movable column and a movable cylinder sleeved onto the movable column; one end of the movable cylinder is fixedly connected to one side of the first wedge block, a third spring is provided inside the movable cylinder, one end of the movable column is elastically connected to the side wall of the first wedge block through the third spring, a guide hole is provided on the cylinder body, the movable cylinder is slidably sleeved with the guide hole, both the movable cylinder and the movable column extend into the cylinder body, a pressure head is fixedly connected to one end of the movable column located inside the cylinder body, and a pressure sensor is provided on the end face of the movable cylinder facing the pressure head.

[0009] Preferably, the pushing mechanism includes a movable ring; the movable ring is slidably sleeved onto the outer wall of the cylinder, and a plurality of sliding sleeves arranged in a ring array are provided on the inner ring of the movable ring. A plurality of guide strips are fixedly installed on the outer wall of the cylinder, and the sliding sleeves are slidably connected to the guide strips. A stop block is fixedly installed at the top of the guide strip, and a stop post is provided below the movable ring. A plurality of second nut seats are fixedly installed on the movable ring, and a second screw is threadedly connected to each of the plurality of second nut seats. The second screw is connected to a driving mechanism.

[0010] Preferably, the drive mechanism includes a bottom shell; the bottom shell is fixedly installed to the bottom of the outer cover, a second motor is fixedly installed at the bottom of the bottom shell, a third cylindrical gear and a plurality of second cylindrical gears are rotatably installed inside the bottom shell, and the plurality of second cylindrical gears are meshed around the third cylindrical gear, the bottom end of the second screw is fixedly connected to the second cylindrical gear, and the output shaft of the second motor is connected to the third cylindrical gear.

[0011] Preferably, the inner diameter detection unit includes a middle cylinder, the bottom end of which is fixedly connected to the top surface of the support seat, and the middle cylinder is located at the axis of the cylinder body. Multiple second displacement sensors are arranged in a ring array around the middle cylinder.

[0012] Preferably, the height adjustment mechanism includes a first motor and an end frame. The first motor is fixedly installed on the top side of one side of the upright plate, and the end frame is fixedly installed on the bottom side of one side of the upright plate. The output shaft end of the first motor is connected to a first screw, and the bottom end of the first screw is rotatably connected to the end frame. A first nut seat is threaded onto the first screw, and a slide is fixedly connected to the first nut seat. The slide is slidably connected to a vertical groove opened on the upright plate, and the slide is fixedly connected to a pressure plate.

[0013] Preferably, the length detection unit includes a side frame, which is fixedly installed on the top side of the upright plate, and a first displacement sensor is fixedly installed on the side frame.

[0014] Preferably, it further includes a protective cover, which is disposed above the outer cover and is connected to an opening and closing mechanism; the opening and closing mechanism includes a first protective shell and a second protective shell; the first and second protective shells are respectively fixedly installed on both sides of the upright plate, a rotating shaft is rotatably installed inside the first protective shell, and the rotating shaft extends into the second protective shell, a first cylindrical gear is fixedly sleeved on one end of the rotating shaft located inside the first protective shell, the first cylindrical gear is meshed with a vertical rack, an end block is fixedly connected to one side of the bottom end of the rack, the end block is elastically connected to the top and bottom surfaces of the first protective shell by a first spring, and the top end of the rack is fixedly connected to... A vertical rod is connected to the first protective shell, which is slidably sleeved with a hole at the top of the first protective shell. A guide sleeve is fixedly installed on one side of the top of the upright plate, and the top of the vertical rod is slidably sleeved with the guide sleeve. A push seat is fixedly installed on the top of the vertical rod. A push bar is fixedly installed on one side of the first nut seat of the height adjustment mechanism, and the push bar is located below the push seat. An inner frame is fixedly installed inside the second protective shell, and a bevel gear is rotatably installed on the inner frame. A bevel gear is fixedly sleeved at one end of the rotating shaft inside the second protective shell, and the two bevel gears are meshed. A shaft is fixedly connected to the bevel gear on the inner frame, and the shaft is fixedly connected to the protective cover.

[0015] Furthermore, the present invention provides a pipe feeding inspection process, the inspection process comprising the following steps:

[0016] Step 1: Sampling is performed on the feed pipe to obtain the pipe to be tested;

[0017] Step two: The inspectors visually inspect the appearance to determine whether it is qualified;

[0018] Step two: The inspector places the bottom end of the pipe to be tested into the cylinder, supports it with the bearing seat, and the inspector holds it with his hand. Then the centering mechanism centers the pipe to be tested in the cylinder.

[0019] Step 3: The inner diameter detection unit and the outer diameter detection unit are used for the automatic detection of the inner and outer diameters of the pipe to be tested, respectively.

[0020] Step four: The inspector manually measures the inner and outer diameters at the top of the pipe to be inspected using calipers, and then compares the manually measured inner and outer diameter data with the automatically measured inner and outer diameter data.

[0021] Step 5: The inspector uses a thickness gauge to measure the wall thickness of the pipe to be inspected;

[0022] Step 6: The height adjustment mechanism presses down the pressure plate on the top of the pipe to be tested, and the length detection part is used for automatic detection of the length of the pipe to be tested;

[0023] Step 7: The inspector manually measures the length of the pipe to be inspected using a measuring tape, and compares the manually measured length data with the automatically measured length data.

[0024] Step 8: The testing personnel use a hardness tester to test the hardness.

[0025] Step nine: The height adjustment mechanism separates the pressure plate from the top of the pipe to be tested, and the pipe to be tested is removed to complete the test.

[0026] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0027] The positive and progressive effects of this invention are as follows:

[0028] The aforementioned pipe feeding inspection process and equipment automatically detects the inner diameter, outer diameter, and length using the equipment, while simultaneously allowing for manual verification by inspectors using professional measuring tools. The two sets of data are used for reference, forming a dual verification mechanism to improve the reliability of the inspection. Furthermore, the protective cover and opening / closing mechanism automatically open and close the top of the cylinder, keeping the cylinder closed during non-inspection periods to prevent foreign objects and dust from entering, thus protecting the inner and outer diameter detection sections within the cylinder. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall front and side structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the overall back structure of the present invention.

[0031] Figure 3 This is a schematic diagram of the pusher and the pusher seat of the present invention.

[0032] Figure 4 This is a schematic diagram of the internal structure of the first protective shell of the present invention.

[0033] Figure 5 This is a schematic diagram of the internal structure of the second protective shell of the present invention.

[0034] Figure 6 This is a schematic diagram of the internal structure of the cylinder of the present invention.

[0035] Figure 7 This is a schematic diagram of the centering mechanism and the pushing mechanism of the present invention.

[0036] Figure 8 This is a schematic diagram of the structure of the first wedge block, the second wedge block, and one side of the first wedge block of the present invention.

[0037] Figure 9 For the present invention Figure 8 Enlarged structural diagram of section A in the middle.

[0038] Figure 10 This is a schematic diagram of the structure of the second and third cylindrical gears of the present invention.

[0039] Explanation of reference numerals in the attached figures

[0040] 1. Base; 2. Vertical plate; 201. Vertical slide groove; 3. Height adjustment mechanism; 301. First motor; 302. End frame; 303. First screw; 304. First nut seat; 305. Slide seat; 4. Length detection unit; 401. Side frame; 402. First displacement sensor; 5. Pressure plate; 6. Outer cover; 7. Mounting bracket; 8. Protective cover; 9. Opening and closing mechanism; 901. Vertical rod; 902. Push seat; 903. Guide sleeve; 904. First protective shell; 905. Rack; 906. First spring; 907. Rotating shaft; 908. First cylindrical gear; 909. Second protective shell; 910. Inner frame; 911. Bevel gear; 10. Push bar; 11. Cylinder; 1101. Bearing seat; 1102. Guide hole; 12. Centering mechanism; 201. First wedge block; 1202. Second wedge block; 1203. Second spring; 1204. Connecting rod; 1205. Movable cylinder; 1206. Pressure head; 1207. Movable column; 1208. Third spring; 1209. Pressure sensor; 13. Inner diameter detection unit; 1301. Middle cylinder; 1302. Second displacement sensor; 14. Outer diameter detection unit; 15. Pushing mechanism; 1501. Movable ring; 1502. Second nut seat; 1503. Second screw; 1504. Stop column; 1505. Sliding sleeve; 1506. Guide bar; 1507. Stop block; 16. Drive mechanism; 1601. Bottom shell; 1602. Second motor; 1603. Second cylindrical gear; 1604. Third cylindrical gear; a. Pipe to be tested. Detailed Implementation

[0041] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0042] like Figure 1-10As shown, a pipe feeding inspection device includes a base 1, on the top of which a vertical plate 2 is fixedly installed; it also includes:

[0043] The outer cover 6 is fixedly installed to the bottom side of the upright plate 2 by the mounting bracket 7. A cylinder 11 is fixedly installed in the middle of the outer cover 6, and a bearing seat 1101 is fixedly installed inside the cylinder 11. An annular cavity is formed between the inner wall of the outer cover 6 and the outer wall of the cylinder 11.

[0044] A centering mechanism 12 is installed inside the annular cavity and extends into the cylinder 11;

[0045] The inner diameter detection unit 13 and the outer diameter detection unit 14 are provided. The inner diameter detection unit 13 is located at the axis of the cylinder 11 and is installed on the top surface of the support seat 1101. The outer diameter detection unit 14 is located above the support seat 1101 and there are multiple outer diameter detection units 14. The multiple outer diameter detection units 14 are distributed in a ring array on the inner wall of the cylinder 11.

[0046] Height adjustment mechanism 3 is installed on the side wall of the upright plate 2, and the output end of the height adjustment mechanism 3 is connected to a pressure plate 5, and the pressure plate 5 is located above the cylinder 11;

[0047] The length detection unit 4 is installed on the top side of the upright plate 2 and is located directly above the pressure plate 5.

[0048] like Figure 7-9 As shown, as a specific technical solution, the centering mechanism 12 includes multiple radial pushing components; the multiple radial pushing components are arranged in a ring array and respectively inserted into the annular cavity. Each radial pushing component includes a first wedge block 1201 and a second wedge block 1202. The bottom of the first wedge block 1201 and the top side of the second wedge block 1202 are respectively provided with a first wedge surface and a second wedge surface, and the first wedge surface and the second wedge surface are adapted to fit together. One side of the first wedge block 1201 is elastically connected to the outer wall of the cylinder 11 by a second spring 1203. A push rod is connected to one side of the first wedge block 1201. A connecting rod 1204 is fixedly installed at the bottom of the second wedge surface, and a pushing mechanism 15 is connected to the bottom of the connecting rod 1204.

[0049] The push rod includes a movable column 1207 and a movable cylinder 1205 sleeved on the movable column 1207; one end of the movable cylinder 1205 is fixedly connected to one side of the first wedge block 1201, a third spring 1208 is provided inside the movable cylinder 1205, one end of the movable column 1207 is elastically connected to the side wall of the first wedge block 1201 through the third spring 1208, a guide hole 1102 is provided on the cylinder body 11, the movable cylinder 1205 is slidably sleeved with the guide hole 1102, both the movable cylinder 1205 and the movable column 1207 extend into the cylinder body 11, a pressure head 1206 is fixedly connected to one end of the movable column 1207 located inside the cylinder body 11, and a pressure sensor 1209 is provided on the end face of the movable cylinder 1205 facing the pressure head 1206.

[0050] The pushing mechanism 15 is used to drive the connecting rod 1204 to move up and down. When the pushing mechanism 15 drives the connecting rod 1204 to move upward, the second wedge block 1202 moves upward together with the connecting rod 1204. The second wedge block 1202 presses the first wedge surface of the first wedge block 1201 through the second wedge surface, causing the first wedge block 1201 to drive the push rod closer to the axis of the cylinder 11 and compress the second spring 1203. When the pushing mechanism 15 drives the connecting rod 1204 to move downward, the second wedge block 1202 moves downward together with the connecting rod 1204. The first wedge block 1201, through the elastic force of the second spring 1203, causes the first wedge block 1201 to drive the push rod away from the axis of the cylinder 11, and the first wedge surface of the first wedge block 1201 always adheres to the second wedge surface of the second wedge block 1202.

[0051] The pipe to be tested, a, is inserted into the cylinder 11, with its bottom surface supported by the bearing seat 1101. The pipe to be tested is manually guided, and the connecting rod 1204 is moved upward by the pushing mechanism 15, so that the push rods of multiple radial pushing components move synchronously toward the axis of the cylinder 11, thereby pushing the pipe to be tested, a, to move to the center of the cylinder 11. During the pushing process, the push rod is subjected to pressure, which causes the push rod to retract as a whole. Specifically, its movable column 1207 moves into the movable cylinder 1205, compressing the third spring 1208, until the pressure head 1206 presses against the pressure sensor 1209, thus completing the centering of the pipe to be tested, a, in the cylinder 11.

[0052] The pressure sensor 1209 is connected to an external control device. The pressure sensor 1209 sends a feedback signal in real time, and the centering is completed after being pressurized.

[0053] After the pipe to be tested (a) has been tested, when the centering of the push rod is released, the push rod is moved away from the axis of the cylinder 11, the push rod is separated from the pipe to be tested (a), and then the pipe to be tested (a) is manually lifted and taken out.

[0054] like Figure 7 As shown, as a specific technical solution, the pushing mechanism 15 includes a movable ring 1501; the movable ring 1501 is slidably sleeved onto the outer wall of the cylinder 11, and a plurality of sliding sleeves 1505 arranged in a ring array are provided on the inner ring of the movable ring 1501. A plurality of guide strips 1506 are fixedly installed on the outer wall of the cylinder 11, and the sliding sleeves 1505 are slidably connected to the guide strips 1506. A stop block 1507 is fixedly installed at the top of the guide strips 1506, and a stop post 1504 is provided below the movable ring 1501. A plurality of second nut seats 1502 are fixedly installed on the movable ring 1501, and a plurality of second nut seats 1502 are threadedly connected to a second screw 1503. The second screw 1503 is connected to a driving mechanism 16.

[0055] like Figure 10 As shown, as a specific technical solution, the drive mechanism 16 includes a bottom shell 1601; the bottom shell 1601 is fixedly installed to the bottom of the outer cover 6, the stop post 1504 is fixedly installed to the top surface of the bottom shell 1601, a second motor 1602 is fixedly installed at the bottom of the bottom shell 1601, a third cylindrical gear 1604 and a plurality of second cylindrical gears 1603 are rotatably installed inside the bottom shell 1601, and the plurality of second cylindrical gears 1603 are meshed around the third cylindrical gear 1604, the second screw 1503 is rotatably connected to the top of the bottom shell 1601, and the bottom end of the second screw 1503 extends into the bottom shell 1601, the bottom end of the second screw 1503 is fixedly connected to the second cylindrical gear 1603, and the output shaft of the second motor 1602 is connected to the third cylindrical gear 1604.

[0056] The second motor 1602 drives the third cylindrical gear 1604 to rotate, and the meshing transmission between the third cylindrical gear 1604 and the second cylindrical gear 1603 causes the second cylindrical gear 1603 and the second screw 1503 to rotate together. The threaded transmission between the second screw 1503 and the second nut seat 1502, combined with the sliding guidance provided between the sliding sleeve 1505 and the guide bar 1506, causes the movable ring 1501 to move vertically, thereby driving the connecting rod 1204 to move upward or downward.

[0057] like Figure 6 As shown, as a specific technical solution, the inner diameter detection unit 13 includes a middle cylinder 1301. The bottom end of the middle cylinder 1301 is fixedly connected to the top surface of the support seat 1101, and the middle cylinder 1301 is located at the axis of the cylinder body 11. Multiple second displacement sensors 1302 arranged in a ring array are provided around the middle cylinder 1301.

[0058] After the pipe to be tested, a, is centered inside the cylinder 11, the second displacement sensor 1302 senses and detects the distance between it and the inner wall of the pipe to be tested, a, and the data is processed by the external control equipment to obtain the inner diameter data of the pipe to be tested, a.

[0059] Specifically, the distance between the second displacement sensor 1302 and the axis of the cylinder 11 is known. By adding this known data to the distance between the second displacement sensor 1302 and the inner wall of the pipe a to be tested, the inner diameter value can be measured.

[0060] The outer diameter detection unit 14 also uses a displacement sensor. After the pipe a to be tested is centered, the outer diameter detection unit 14 detects the distance between it and the outer wall of the pipe a. The distance between the outer diameter detection unit 14 and the axis of the cylinder 11 is known. By subtracting the distance between the outer diameter detection unit 14 and the outer wall of the pipe a obtained by detection from the known data, the outer diameter value can be measured.

[0061] The above design enables the automatic determination of the outer and inner diameters of the pipe to be tested (a). In practice, the testing personnel need to manually measure the inner and outer diameters at the top of the pipe (a) using calipers. The two sets of data obtained by manual and automatic measurement are cross-referenced to improve the reliability of the test data.

[0062] like Figure 1-4 As shown, as a specific technical solution, the height adjustment mechanism 3 includes a first motor 301 and an end frame 302. The first motor 301 is fixedly installed on the top side of the upright plate 2, and the end frame 302 is fixedly installed on the bottom side of the upright plate 2. The output shaft end of the first motor 301 is connected to a first screw 303, and the bottom end of the first screw 303 is rotatably connected to the end frame 302. A first nut seat 304 is threadedly connected to the first screw 303. A slide 305 is fixedly connected to the first nut seat 304. The slide 305 is slidably connected to the vertical sliding groove 201 opened on the upright plate 2, and the slide 305 is fixedly connected to the pressure plate 5.

[0063] like Figure 1 As shown, as a specific technical solution, the length detection unit 4 includes a side frame 401, which is fixedly installed on the top side of the upright plate 2, and a first displacement sensor 402 is fixedly installed on the side frame 401.

[0064] The pipe to be tested, a, is placed between the pressure plate 5 and the bearing seat 1101. The inspector holds the pipe in place. The first motor 301 drives the first screw 303 to rotate. Through the threaded transmission between the first screw 303 and the first nut seat 304, and with the sliding guide between the slide block 305 and the vertical slide groove 201, the pressure plate 5 moves downward and presses down on the top of the pipe to be tested, a.

[0065] After the above operations, the first displacement sensor 402 performs sensing to detect the distance between itself and the top surface of the pressure plate 5. The distance between the first displacement sensor 402 and the top surface of the support 1101 is known, and the thickness of the pressure plate 5 is also known. The length of the pipe a to be tested can be obtained by subtracting the thickness of the pressure plate 5 and the distance between the first displacement sensor 402 and the top surface of the support 1101 from the distance between the first displacement sensor 402 and the top surface of the pressure plate 5.

[0066] The above design enables automatic measurement of the length of the pipe to be tested (a). In practice, the testing personnel need to manually measure the length of the pipe to be tested (a) using a measuring tape. It should be noted that contour lines are marked on the outer wall of the outer cover 6, and the contour lines are at the same height as the top surface of the bearing seat 1101. The length of the pipe to be tested (a) can be manually measured by measuring the distance between the contour lines and the bottom surface of the pressure plate 5. The two sets of data obtained by manual and automatic measurement are cross-referenced to improve the reliability of the test data.

[0067] like Figure 1 As shown, it also includes a protective cover 8, which is disposed above the outer cover 6 and is connected to an opening and closing mechanism 9; as Figure 2-5 As shown, the opening and closing mechanism 9 includes a first protective shell 904 and a second protective shell 909. The first protective shell 904 and the second protective shell 909 are respectively fixedly installed on both sides of the upright plate 2. A rotating shaft 907 is rotatably installed inside the first protective shell 904, and the rotating shaft 907 extends into the second protective shell 909. A first cylindrical gear 908 is fixedly sleeved on one end of the rotating shaft 907 located inside the first protective shell 904. The first cylindrical gear 908 meshes with a vertical rack 905. An end block is fixedly connected to one side of the bottom end of the rack 905. The end block is elastically connected to the top and bottom surfaces of the first protective shell 904 by a first spring 906. A vertical rod 901 is fixedly connected to the top end of the rack 905. The vertical rod 901 is connected to the opening and closing mechanism 909. The top hole of 04 is slidably sleeved. A guide sleeve 903 is fixedly installed on one side of the top of the vertical plate 2. The top end of the vertical rod 901 is slidably sleeved with the guide sleeve 903. A push seat 902 is fixedly installed on the top end of the vertical rod 901. A push bar 10 is fixedly installed on one side of the first nut seat 304 of the height adjustment mechanism 3. The push bar 10 is located below the push seat 902. An inner frame 910 is fixedly installed inside the second protective shell 909. A bevel gear 911 is rotatably installed on the inner frame 910. A bevel gear 911 is fixedly sleeved at one end of the rotating shaft 907 inside the second protective shell 909. The two bevel gears 911 are meshed and connected. A shaft is fixedly connected to the bevel gear 911 on the inner frame 910. The shaft is fixedly connected to the protective cover 8.

[0068] After the pipe material a to be tested has been tested, the height adjustment mechanism 3 adjusts the pressure plate 5 to the position as follows. Figure 1-3 At the indicated height, the pipe to be tested, a, loses downward pressure. At this time, the pipe to be tested, a, can be manually removed. At this time, the top surface of the pusher 10 is in contact with the bottom surface of the push seat 902. When no other pipe to be tested, a, is subsequently tested, the height adjustment mechanism 3 continues to drive the first nut seat 304 to move upward until the top surface of the slide 305 is in contact with the top surface of the vertical slide groove 201. During this process, the pusher 10 pushes the push seat 902. The push seat 902 drives the rack 905 to move upward through the vertical rod 901. Through the meshing transmission between the rack 905 and the first cylindrical gear 908, the rotating shaft 907 rotates and compresses the first spring 906. The rotating shaft 907 drives a bevel gear 911 to rotate together. Through the meshing transmission between the two bevel gears 911, the shaft rotates. The shaft drives the protective cover 8 to flip over and cover the top of the outer cover 6 for protection. In the case of long-term non-use, this prevents foreign objects and dust from entering the inside of the cylinder 11.

[0069] When conducting the test again, first adjust the pressure plate 5 to the position as follows: Figure 1-3 In the aforementioned state, the push bar 10 moves downward, and the push seat 902 loses the upward pressure of the push bar 10. Through the elastic force of the first spring 906, the rack 905, the vertical rod 901, and the push seat 902 move downward together until the bottom end of the rack 905 is in contact with the bottom inner wall of the first protective shell 904 and is blocked. Through the meshing transmission between the rack 905 and the first cylindrical gear 908, the rotating shaft 907 rotates in the opposite direction. The rotating shaft 907 drives a bevel gear 911 to rotate together. Through the meshing transmission of the two bevel gears 911, the shaft rotates. The shaft drives the protective cover 8 to flip, removing the obstruction above the outer cover 6. During subsequent testing, the tube a to be tested can be inserted into the cylinder 11 for testing.

[0070] With the above design, after testing and when not in use for a long time, the top of the cylinder 11 can be automatically closed for protection; when used again, the top of the cylinder 11 can be automatically opened; and the opening and closing is achieved automatically by the upward pushing force provided by the push bar 10 driven by the height adjustment mechanism 3 and the reset elastic force of the first spring 906.

[0071] A pipe material infeed inspection process, the inspection process comprising the following steps:

[0072] Step 1: Sampling is performed on the feed pipe to obtain the pipe to be tested, a;

[0073] Step two: The inspectors visually inspect the appearance to determine whether it is qualified;

[0074] Step 2: The inspector places the bottom end of the pipe to be tested, a, into the cylinder 11, which is supported by the bearing seat 1101. The inspector holds the pipe in place, and then the centering mechanism 12 centers the pipe to be tested, a, in the cylinder 11.

[0075] Step 3: The inner diameter detection unit 13 and the outer diameter detection unit 14 are used for automatic detection of the inner and outer diameters of the pipe a to be tested;

[0076] Step 4: The inspector manually measures the inner and outer diameters at the top of the pipe to be inspected using calipers, and compares the manually measured inner and outer diameter data with the automatically measured inner and outer diameter data.

[0077] Step 5: The inspector uses a thickness gauge to measure the wall thickness of the pipe material (a) to be inspected.

[0078] Step 6: The height adjustment mechanism 3 causes the pressure plate 5 to press down on the top of the pipe a to be tested, and the length detection part 4 is used for automatic detection of the length of the pipe a to be tested;

[0079] Step 7: The inspector manually measures the length of the pipe to be inspected (a) using a measuring tape, and compares the manually measured length data with the automatically measured length data.

[0080] Step 8: The testing personnel use a hardness tester to test the hardness.

[0081] Step 9: The height adjustment mechanism 3 separates the pressure plate 5 from the top of the pipe a to be tested, and the pipe a to be tested is removed to complete the test.

[0082] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A pipe feeding inspection device, comprising a base (1), wherein a vertical plate (2) is fixedly installed on the top of the base (1); characterized in that, Also includes: The outer cover (6) is fixedly installed to the bottom side of the upright plate (2) by the mounting bracket (7). A cylinder (11) is fixedly installed in the middle of the outer cover (6), and a bearing seat (1101) is fixedly installed inside the cylinder (11). The inner wall of the outer cover (6) and the outer wall of the cylinder (11) form an annular cavity. A centering mechanism (12) is installed in the annular cavity and extends into the cylinder (11); The inner diameter detection part (13) and the outer diameter detection part (14) are located at the axis of the cylinder (11) and are installed on the top surface of the support seat (1101). The outer diameter detection part (14) is located above the support seat (1101) and there are multiple outer diameter detection parts (14). The multiple outer diameter detection parts (14) are arranged in a ring array on the inner wall of the cylinder (11). Height adjustment mechanism (3), the height adjustment mechanism (3) is installed on the side wall of the upright plate (2), and the output end of the height adjustment mechanism (3) is connected to a pressure plate (5), and the pressure plate (5) is located above the cylinder (11); The length detection unit (4) is installed on the top side of the upright plate (2) and is located directly above the pressure plate (5); The centering mechanism (12) includes multiple radial pushing components; the multiple radial pushing components are arranged in a ring array and respectively inserted into the annular cavity. Each radial pushing component includes a first wedge block (1201) and a second wedge block (1202). The bottom of the first wedge block (1201) and the top side of the second wedge block (1202) are respectively provided with a first wedge surface and a second wedge surface, and the first wedge surface and the second wedge surface are fitted together. One side of the first wedge block (1201) is elastically connected to the outer wall of the cylinder (11) by a second spring (1203). A push rod is connected to one side of the first wedge block (1201); a connecting rod (1204) is fixedly installed at the bottom of the second wedge surface, and a pushing mechanism (15) is connected to the bottom of the connecting rod (1204); the pushing mechanism (15) includes a movable ring (1501); the movable ring (1501) is slidably sleeved onto the outer wall of the cylinder (11), and a plurality of sliding sleeves (1505) arranged in a ring array are provided on the inner ring of the movable ring (1501); a plurality of guide strips (1506) are fixedly installed on the outer wall of the cylinder (11), and the sliding sleeves ( 1505) is slidably connected to the guide bar (1506). A stop block (1507) is fixedly installed at the top of the guide bar (1506). A stop post (1504) is provided below the movable ring (1501). A plurality of second nut seats (1502) are fixedly installed on the movable ring (1501), and a plurality of second nut seats (1502) are threadedly connected to a second screw (1503). The second screw (1503) is connected to a drive mechanism (16). The drive mechanism (16) includes a bottom shell (1601). The bottom shell (1601) The second motor (1602) is fixedly installed at the bottom of the outer cover (6). A third cylindrical gear (1604) and a plurality of second cylindrical gears (1603) are rotatably installed inside the bottom cover (1601). The plurality of second cylindrical gears (1603) are meshed around the third cylindrical gear (1604). The bottom end of the second screw (1503) is fixedly connected to the second cylindrical gear (1603). The output shaft of the second motor (1602) is connected to the third cylindrical gear (1604).

2. The pipe feeding inspection equipment as described in claim 1, characterized in that: The push rod includes a movable column (1207) and a movable cylinder (1205) sleeved on the movable column (1207); one end of the movable cylinder (1205) is fixedly connected to one side of the first wedge block (1201), a third spring (1208) is provided inside the movable cylinder (1205), and one end of the movable column (1207) is elastically connected to the side wall of the first wedge block (1201) through the third spring (1208). (11) A guide hole (1102) is provided on the upper part. The movable cylinder (1205) is slidably sleeved with the guide hole (1102). The movable cylinder (1205) and the movable column (1207) both extend into the cylinder body (11). One end of the movable column (1207) located in the cylinder body (11) is fixedly connected to a pressure head (1206). A pressure sensor (1209) is provided on the end face of the movable cylinder (1205) facing the pressure head (1206).

3. The pipe feeding inspection equipment as described in claim 1, characterized in that: The inner diameter detection unit (13) includes a middle cylinder (1301), the bottom end of which is fixedly connected to the top surface of the support seat (1101), and the middle cylinder (1301) is located at the axis of the cylinder body (11). Multiple second displacement sensors (1302) are arranged in a ring array around the middle cylinder (1301).

4. The pipe feeding inspection equipment as described in claim 1, characterized in that: The height adjustment mechanism (3) includes a first motor (301) and an end frame (302). The first motor (301) is fixedly installed on the top side of the upright plate (2), and the end frame (302) is fixedly installed on the bottom side of the upright plate (2). The output shaft end of the first motor (301) is connected to a first screw (303), and the bottom end of the first screw (303) is rotatably connected to the end frame (302). A first nut seat (304) is threaded on the first screw (303), and a slide seat (305) is fixedly connected to the first nut seat (304). The slide seat (305) is slidably connected to the vertical sliding groove (201) opened on the upright plate (2), and the slide seat (305) is fixedly connected to the pressure plate (5).

5. The pipe feeding inspection equipment as described in claim 1, characterized in that: The length detection unit (4) includes a side frame (401), which is fixedly installed on the top side of the upright plate (2), and a first displacement sensor (402) is fixedly installed on the side frame (401).

6. The pipe feeding inspection equipment as described in claim 4, characterized in that: It also includes a protective cover (8), which is disposed above the outer cover (6) and is connected to an opening and closing mechanism (9); the opening and closing mechanism (9) includes a first protective shell (904) and a second protective shell (909); the first protective shell (904) and the second protective shell (909) are respectively fixedly installed on both sides of the upright plate (2), and a rotating shaft (907) is rotatably installed inside the first protective shell (904), and the rotating shaft (907) extends to the second protective shell. Inside the shell (909), a first cylindrical gear (908) is fixedly sleeved on one end of the rotating shaft (907) located inside the first protective shell (904). The first cylindrical gear (908) meshes with a vertical rack (905). An end block is fixedly connected to one side of the bottom end of the rack (905). The end block is elastically connected to the top and bottom surfaces of the first protective shell (904) through a first spring (906). A vertical rod (907) is fixedly connected to the top end of the rack (905). 1) The vertical rod (901) is slidably sleeved with the hole at the top of the first protective shell (904). A guide sleeve (903) is fixedly installed on one side of the top of the upright plate (2). The top end of the vertical rod (901) is slidably sleeved with the guide sleeve (903). A push seat (902) is fixedly installed on the top end of the vertical rod (901). A push bar (10) is fixedly installed on one side of the first nut seat (304) of the height adjustment mechanism (3). The push bar (10) is located on the push seat (904). Below 02), an inner frame (910) is fixedly installed inside the second protective shell (909). A bevel gear (911) is rotatably installed on the inner frame (910). A bevel gear (911) is fixedly sleeved on one end of the rotating shaft (907) inside the second protective shell (909). The two bevel gears (911) are meshed and connected. A shaft is fixedly connected to the bevel gear (911) on the inner frame (910). The shaft is fixedly connected to the protective cover (8).

7. A pipe feeding inspection process derived from the pipe feeding inspection equipment as described in any one of claims 1-6, characterized in that: The detection process includes the following steps: Step 1: Sampling is performed on the feed pipe to obtain the pipe to be tested (a); Step two: The inspectors visually inspect the appearance to determine whether it is qualified; Step 2: The inspector places the bottom end of the pipe to be tested (a) in the cylinder (11), supports it through the bearing seat (1101), and the inspector holds it with his hand. Then the centering mechanism (12) centers the pipe to be tested (a) in the cylinder (11). Step 3: The inner diameter detection unit (13) and the outer diameter detection unit (14) are used for automatic detection of the inner and outer diameters of the pipe to be tested (a); Step 4: The inspector manually measures the inner and outer diameters at the top of the pipe (a) to be inspected using calipers, and compares the manually measured inner and outer diameter data with the automatically measured inner and outer diameter data. Step 5: The inspector uses a thickness gauge to measure the wall thickness of the pipe to be inspected (a); Step 6: The height adjustment mechanism (3) presses down the pressure plate (5) on the top of the pipe (a) to be tested, and the length detection part (4) is used for automatic detection of the length of the pipe (a) to be tested; Step 7: The inspector manually measures the length of the pipe to be inspected (a) using a measuring tape, and compares the manually measured length data with the automatically measured length data. Step 8: The testing personnel use a hardness tester to test the hardness. Step 9: The height adjustment mechanism (3) separates the pressure plate (5) from the top of the pipe to be tested (a), and the pipe to be tested (a) is removed to complete the test.

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