Pipe size detection mechanism for plastic pipe discharge

Abstract

The utility model discloses a pipe size detection mechanism for plastic pipe discharge, including orientation subassembly, detection subassembly, a plurality of detection subassembly are installed through bolt array in the one side outer wall of orientation subassembly, and detection subassembly includes installation cylinder, sliding frame, and the one end of installation cylinder is provided with the sliding slot, and the one end of sliding frame is installed with the sliding block through the bolt, and the sliding block and the sliding slot constitute the sliding pair, and the bottom of sliding frame is provided with the recess, and the recess is installed with the detection wheel through bearing in the inside, and the detection wheel and the outer wall of pipe material keep rolling contact, and the outside of detection wheel is provided with four embedded grooves that are array structure distribution, and the embedded groove is bonded with the magnet block through the glue in the inside, the utility model discloses through the synchronous trigger rotational speed signal of encoder and the magnetic pulse signal of hall detector of detection wheel, forms rotational speed - position double factor check mechanism, and the measurement data confidence is improved from the low confidence rate of traditional single encoder system to the high confidence rate, and effectively eliminates the data drift error that causes the detection wheel to slip.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe testing equipment, specifically to a pipe size testing mechanism for plastic pipe discharge. Background Technology

[0002] The pipes are produced on the production line and then cut into plastic pipes. The finished plastic pipes need to be randomly sampled by quality inspectors to check whether their inner and outer diameter dimensions are up to standard. Finished products that meet the standards can be removed from the production line.

[0003] For example, a pipe size detection mechanism for discharging plastic pipes, with application number CN222353099U and authorization announcement date of 20250114, relates to the technical field of pipe testing equipment. This pipe size detection mechanism for discharging plastic pipes includes a pipe clamping mechanism, a pipe laying frame, and pipe outer diameter detection mechanisms and pipe inner diameter detection mechanisms fixed at both ends of the pipe laying frame. The pipe clamping mechanism is fixed on a power trolley of a track-driven trolley, and the linear track of the track-driven trolley is located in front of the pipe laying frame. The pipe clamping mechanism clamps the end of the pipe, and the pipe is laid horizontally on the pipe laying frame. This utility model, by setting up a pipe clamping mechanism, a pipe laying frame, a track-driven trolley, and combining the pipe outer diameter detection mechanism and the pipe inner diameter detection mechanism, can automatically detect the overall wall thickness and outer diameter of the pipe. The detection method is simple, the detection efficiency is high, it can detect the uniformity of pipe dimensions, and the accurate positioning ensures that the pipe to be tested will not deform or bend, improving the measurement accuracy and the detection effect.

[0004] Testing institutions generally suffer from problems such as simplistic measurement parameters, insufficient sensor redundancy, and lack of dynamic compensation mechanisms. In particular, for pipes with diameter fluctuations exceeding ±0.5mm, existing technologies cannot achieve adaptive adjustment of the measuring head pressure, resulting in intermittent disconnection between the testing wheel and the pipe, causing measurement failures. Therefore, there is an urgent need to design a pipe size testing mechanism for plastic pipe output to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pipe size detection mechanism for plastic pipe discharge, so as to solve the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pipe size detection mechanism for plastic pipe discharge includes a guide assembly and a detection assembly. Several detection assemblies are bolted to the outer wall of one side of the guide assembly. Each detection assembly includes a mounting cylinder and a sliding frame. One end of the mounting cylinder has a groove, and one end of the sliding frame has a sliding block bolted to it, forming a sliding pair with the groove. The bottom of the sliding frame has a groove, and a detection wheel is mounted inside the groove via a bearing. The detection wheel maintains rolling contact with the outer wall of the pipe. Four arrayed embedding slots are formed on the outside of the detection wheel, and magnets are glued inside these slots. One side of the outer wall of the sliding frame has a mounting groove, and an encoder is bolted to one side of the inner wall of the mounting groove. The output end of the encoder is mounted to the detection wheel. A Hall effect detector is bolted to one side of the inner wall of the mounting groove, corresponding to the magnet. One side of the outer wall of the sliding frame has a rectangular groove, and a distance sensor is bolted to the inside of this groove.

[0008] Furthermore, two ear plates are welded to one side of the outer wall of the mounting cylinder, and through holes are provided on one side of the outer wall of the ear plates.

[0009] Furthermore, a mounting groove is provided at the other end of the mounting cylinder, and a pressure sensor is installed on one side of the inner wall of the mounting groove by bolts.

[0010] Furthermore, a connecting spring is bolted to the bottom of the pressure sensor, and the top of the sliding block is bolted to the bottom of the connecting spring.

[0011] Furthermore, the guide assembly includes two parallel support frames, each with four insertion holes on one outer wall, and a guide cylinder welded between the two support frames.

[0012] Furthermore, electric push rods are bolted to all four outer walls of the guide cylinder, and limit plates are bolted to the output ends of the electric push rods.

[0013] In the above technical solution, the pipe size detection mechanism for plastic pipe discharge provided by this utility model has the following beneficial effects:

[0014] This invention uses the detection wheel to synchronously trigger the encoder's rotational speed signal and the Hall detector's magnetic pulse signal to form a rotational speed-position dual-factor verification mechanism, which improves the confidence level of the measurement data from the low confidence level of the traditional single encoder system to the high confidence level, effectively eliminating data drift errors caused by detection wheel slippage.

[0015] This utility model pressure sensor dynamically adjusts the contact pressure of the sliding frame on the pipe by connecting springs, maintaining a constant pressure between the detection wheel and the outer wall of the pipe within a pipe diameter fluctuation range of ±0.5mm, thus solving the measurement failure problem caused by intermittent loss of contact during the detection process.

[0016] This utility model's distance measuring sensor can collect the distance between the sliding block and the top of the inner wall of the groove in real time. Combined with the detection of the distance measuring sensor in the detection assembly on the coaxial line, the movement distance of the sliding block can be obtained. Combined with the distance between the detection wheels in the two detection assemblies on the original coaxial line, the two can be added together to obtain the outer diameter of the pipe. In this process, the combination of the distance measuring sensor and the detection wheel can simultaneously acquire the pipe's outer diameter, ellipticity, and surface deformation data, breaking through the limitations of traditional single-parameter detection and meeting the requirements of high-precision quality inspection.

[0017] This utility model presents a multi-degree-of-freedom adjustment system composed of a guide cylinder and an electric push rod. When the electric push rod is activated, it drives the limit plate to move. Through the movement of multiple limit plates, the contact angle deviation between the pipe axis and the detection wheel can be adjusted in real time, eliminating the eccentric error caused by pipe bending and greatly reducing the repeatability error of diameter measurement. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the pipe size detection mechanism for plastic pipe discharge according to this utility model.

[0020] Figure 2 This is a schematic diagram of the guide component and detection component provided in an embodiment of the pipe size detection mechanism for plastic pipe discharge according to this utility model.

[0021] Figure 3 This is a schematic diagram of the guide component structure provided in an embodiment of the pipe size detection mechanism for plastic pipe discharge according to this utility model.

[0022] Figure 4 This is a schematic diagram of the detection component structure provided in an embodiment of the pipe size detection mechanism for plastic pipe discharge according to this utility model.

[0023] Figure 5 This is a schematic diagram of the overall structure of the detection component provided in an embodiment of the pipe size detection mechanism for plastic pipe discharge according to this utility model.

[0024] Figure 6 This is a schematic diagram of the mounting cylinder and sliding frame structure provided in an embodiment of the pipe size detection mechanism for plastic pipe discharge according to this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Guide assembly; 2. Detection assembly; 3. Support frame; 4. Insertion hole; 5. Guide cylinder; 6. Electric push rod; 7. Limiting plate; 8. Mounting cylinder; 9. Placement groove; 10. Pressure sensor; 11. Ear plate; 12. Through hole; 13. Sliding frame; 14. Groove; 15. Detection wheel; 16. Embedding groove; 17. Magnet block; 18. Mounting groove; 19. Hall detector; 20. Encoder; 21. Sliding block; 22. Rectangular groove; 23. Distance sensor; 24. Slide groove; 25. Connecting spring. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-6 As shown in the figure, the pipe size detection mechanism for plastic pipe discharge provided in this embodiment of the utility model includes a guide assembly 1 and a detection assembly 2. A plurality of detection assemblies 2 are mounted on the outer wall of one side of the guide assembly 1 by an array of bolts. Each detection assembly 2 includes a mounting cylinder 8 and a sliding frame 13. One end of the mounting cylinder 8 has a sliding groove 24, and one end of the sliding frame 13 has a sliding block 21 mounted on it by bolts. The sliding block 21 and the sliding groove 24 form a sliding pair. The bottom end of the sliding frame 13 has a groove 14, and a detection wheel 15 is mounted inside the groove 14 via a bearing. The detection wheel 15 maintains rolling contact with the outer wall of the pipe. The detection wheel 15 has four arrayed embedding slots 16 on its outer side, and magnet blocks 17 are glued inside the embedding slots 16. The sliding frame 13 has a mounting slot 18 on one side of its outer wall, and an encoder 20 is bolted to one side of the inner wall of the mounting slot 18. The output end of the encoder 20 is mounted together with the detection wheel 15. A Hall detector 19 is bolted to one side of the inner wall of the mounting slot 18, and the Hall detector 19 corresponds to the magnet blocks 17. The sliding frame 13 has a rectangular slot 22 on one side of its outer wall, and a distance sensor 23 is bolted to the inside of the rectangular slot 22.

[0029] Specifically, in this embodiment, a guide assembly 1 and a detection assembly 2 are included. Several detection assemblies 2 are mounted on the outer wall of one side of the guide assembly 1 by an array of bolts. The detection assembly 2 includes a mounting cylinder 8 and a sliding frame 13. One end of the mounting cylinder 8 has a sliding groove 24. One end of the sliding frame 13 is bolted with a sliding block 21, and the sliding block 21 and the sliding groove 24 form a sliding pair. The bottom end of the sliding frame 13 has a groove 14, and a detection wheel 15 is mounted inside the groove 14 by a bearing. The detection wheel 15 is mounted inside the groove 14 by the bearing. The detection wheel 15 rotates freely, and the outer wall magnet 17 triggers the Hall detector 19 with each rotation cycle, generating a position pulse signal. The encoder 20 directly acquires the rotation speed of the detection wheel 15, and combines it with the magnetic pulse signal to achieve dual verification of rotation speed and position. The detection wheel 15 maintains rolling contact with the outer wall of the pipe. The outer side of the detection wheel 15 has four embedded grooves 16 arranged in an array, and the magnet 17 is glued inside the embedded grooves 16. The outer wall of one side of the sliding frame 13 has a mounting groove 18, and the inner wall of the mounting groove 18 is bolted to install the magnet 17. An encoder 20, preferably model AS5048A, is coaxially connected to the detection wheel 15. It records the rotational speed to calculate the circumference data v=πDn, where D is the pipe diameter and n is the number of revolutions, thus obtaining the length of the pipe to be tested. The output end of the encoder 20 is installed together with the detection wheel 15. A Hall detector 19, preferably model SS49E, is bolted to one side of the inner wall of the mounting groove 18. The Hall detector 19 captures the magnetic pulses of the magnet block 17 embedded in the groove 16, generates a position synchronization signal, and performs time-domain cross-verification with the data from the encoder 20. The Hall detector 19 corresponds to the magnet block 17. A rectangular groove 22 is opened on one side of the outer wall of the sliding frame 13, and a distance sensor 23, preferably model LQD-LD61PS, is bolted to the inside of the rectangular groove 22. As the pipe moves, the distance sensor 23 monitors the displacement ΔL of the sliding block 21 in the groove 24 in real time. Combined with the distance L between adjacent detection components 2, the actual outer diameter D=ΔL+L is calculated.

[0030] The pipe size detection mechanism for plastic pipe discharge provided by this utility model synchronously triggers the speed signal of encoder 20 and the magnetic pulse signal of Hall detector 19 through detection wheel 15 to form a speed-position dual factor verification mechanism, which improves the confidence of measurement data from the low confidence rate of traditional single encoder system to the high confidence rate, effectively eliminating data drift error caused by detection wheel slippage.

[0031] In one embodiment provided by this utility model, such as Figure 4-5As shown, two ear plates 11 are welded to one side of the outer wall of the mounting cylinder 8, and a through hole 12 is provided on one side of the outer wall of the ear plate 11. Bolts pass through the through hole 12 to facilitate the ear plate 11 to be fixed on the support frame 3. A mounting groove 9 is provided at the other end of the mounting cylinder 8, and a pressure sensor 10 is installed on one side of the inner wall of the mounting groove 9 by bolts. The pressure sensor 10 is preferably CK2241. A connecting spring 25 is installed at the bottom of the pressure sensor 10 by bolts. The pressure sensor 10 monitors the pressure of the sliding frame 13 on the pipe in real time through the connecting spring 25. When the pressure exceeds the limit, the electric push rod 6 is automatically adjusted to compensate for the stroke. The top of the sliding block 21 is connected to the bottom of the connecting spring 25 by bolts.

[0032] In another embodiment provided by this utility model, such as Figure 3 As shown, the guide assembly 1 includes two parallel support frames 3. Four insertion holes 4 are opened on one side of the outer wall of the support frame 3. A guide cylinder 5 is welded between the two support frames 3. Electric push rods 6 are bolted to the four outer walls of the guide cylinder 5. The electric push rod 6 is preferably of the THK model. The output end of the electric push rod 6 is bolted to the limiting plate 7. When the electric push rod 6 of the guide cylinder 5 unfolds the limiting plate 7, it forms an initial channel. After the pipe enters, it is clamped to the center line in four directions. Example 1

[0033] A pipe size detection mechanism for plastic pipe discharge includes a guide assembly 1 and a detection assembly 2. Several detection assemblies 2 are bolted to the outer wall of one side of the guide assembly 1. Each detection assembly 2 includes a mounting cylinder 8 and a sliding frame 13. One end of the mounting cylinder 8 has a groove 24. One end of the sliding frame 13 has a sliding block 21 bolted to it, and the sliding block 21 and the groove 24 form a sliding pair. The bottom end of the sliding frame 13 has a groove 14, and a detection wheel 15 is mounted inside the groove 14 via a bearing. The detection wheel 15 is mounted on the bearing... The detection wheel 15 rotates freely within the groove 14. The magnet 17 on its outer wall triggers the Hall effect detector 19 with each rotation cycle, generating a position pulse signal. The encoder 20 directly acquires the rotational speed of the detection wheel 15, combining it with the magnetic pulse signal to achieve dual verification of speed and position. The detection wheel 15 maintains rolling contact with the outer wall of the pipe. Four arrayed embedding grooves 16 are provided on the outside of the detection wheel 15, and magnets 17 are glued to the inside of each embedding groove 16. A mounting groove 18 is provided on one side of the outer wall of the sliding frame 13, and one side of the inner wall of the mounting groove 18 is... An encoder 20, preferably an AS5048A, is bolted on. The encoder 20 is coaxially connected to the detection wheel 15 and records the rotational speed to calculate the circumference data v=πDn, where D is the pipe diameter and n is the number of revolutions, thus obtaining the length of the pipe to be tested. The output end of the encoder 20 is mounted together with the detection wheel 15. A Hall detector 19, preferably an SS49E, is bolted on one side of the inner wall of the mounting groove 18. The Hall detector 19 captures the magnetic pulses of the magnet block 17 embedded in the groove 16, generates a position synchronization signal, and performs time-domain cross-verification with the data from the encoder 20. The Hall detector 19 corresponds to the magnet block 17. A rectangular groove 22 is opened on one side of the outer wall of the sliding frame 13, and a distance sensor 23, preferably an LQD-LD61PS, is bolted on inside the rectangular groove 22. As the pipe moves, the distance sensor 23 monitors the displacement ΔL of the sliding block 21 in the groove 24 in real time. Combined with the distance L between adjacent detection components 2, the actual outer diameter D=ΔL+L is calculated. Example 2

[0034] This embodiment further defines the features of Embodiment 1. Two ear plates 11 are welded to one side of the outer wall of the mounting cylinder 8, and a through hole 12 is formed on one side of the outer wall of the ear plate 11. Bolts pass through the through hole 12 to facilitate fixing the ear plate 11 to the support frame 3. A mounting groove 9 is formed at the other end of the mounting cylinder 8, and a pressure sensor 10 is bolted to one side of the inner wall of the mounting groove 9. The pressure sensor 10 is preferably a CK2241 model. A connecting spring 25 is bolted to the bottom of the pressure sensor 10, and the pressure sensor 10 monitors the pressure exerted by the sliding frame 13 on the pipe in real time via the connecting spring 25. Force, automatically adjusts electric push rod 6 stroke compensation when the limit is exceeded; the top of sliding block 21 is connected to the bottom of connecting spring 25 by bolts; guide assembly 1 includes two parallel support frames 3, four insertion holes 4 are opened on one side of the outer wall of support frame 3, guide cylinder 5 is welded between the two support frames 3, electric push rod 6 is installed on all four outer walls of guide cylinder 5 by bolts, the electric push rod 6 model is preferably THK, and the output end of electric push rod 6 is installed with limit plate 7 by bolts. When the electric push rod 6 of guide cylinder 5 unfolds the limit plate 7 to form an initial channel, the pipe is clamped to the center line in four directions after entering.

[0035] Working principle: When the pipe enters the guide cylinder 5, the electric push rod 6 pushes the limiting plate 7 to move towards the surface of the pipe according to the preset program. Through the synchronous or independent action of the four limiting plates 7, the pipe is flexibly clamped, eliminating axial offset caused by bending or eccentricity, ensuring that the pipe axis is coaxial with the center line of the guide cylinder 5, and eliminating the initial skew error. Subsequently, as the pipe moves, it will contact the detection wheel 15. During this process, the detection wheel 15 rolls in contact with the pipe wall. The encoder 20 is coaxially connected to the detection wheel 15 and records the rotation speed converted to circumference data v=πDn, where D is the pipe diameter and n is the number of revolutions. At the same time, the Hall detector 19... The magnetic pulses of the magnet block 17 embedded in the groove 16 are captured to generate a position synchronization signal, which is then cross-validated with the data from the encoder 20 in the time domain. During the detection process, the pressure sensor 10 forms a closed-loop force feedback through the connecting spring 25. When the pipe diameter changes, the spring compression changes, triggering a pressure value correction, which stabilizes the contact pressure of the detection wheel 15 within a certain range. As the pipe moves, the distance sensor 23 monitors the displacement ΔL of the sliding block 21 in the groove 24 in real time. Combined with the distance L between adjacent detection components 2, the actual outer diameter D = ΔL + L is calculated. The subsequent detection data will be transmitted to the external control panel.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pipe size detection mechanism for plastic pipe discharge, comprising a guide assembly (1) and a detection assembly (2), characterized in that, Several detection components (2) are mounted on the outer wall of one side of the guide component (1) by an array of bolts. The detection component (2) includes a mounting cylinder (8) and a sliding frame (13). A groove (24) is provided at one end of the mounting cylinder (8). A sliding block (21) is mounted on one end of the sliding frame (13) by bolts. The sliding block (21) and the groove (24) form a sliding pair. A groove (14) is provided at the bottom of the sliding frame (13). A detection wheel (15) is installed inside the groove (14) by a bearing. The detection wheel (15) maintains rolling contact with the outer wall of the pipe. Four detection wheels (15) are arranged in an array on the outside of the detection wheel (15). The sliding frame (13) has an embedded groove (16) and a magnet (17) is glued inside the embedded groove (16). An installation groove (18) is provided on one side of the outer wall of the sliding frame (13). An encoder (20) is installed on one side of the inner wall of the installation groove (18) by bolts. The output end of the encoder (20) is installed together with the detection wheel (15). A Hall detector (19) is installed on one side of the inner wall of the installation groove (18) by bolts. The Hall detector (19) corresponds to the magnet (17). A rectangular groove (22) is provided on one side of the outer wall of the sliding frame (13). A distance sensor (23) is installed inside the rectangular groove (22) by bolts.

2. The pipe size detection mechanism for plastic pipe discharge according to claim 1, characterized in that, Two ear plates (11) are welded to one side of the outer wall of the mounting cylinder (8), and a through hole (12) is provided on one side of the outer wall of the ear plate (11).

3. The pipe size detection mechanism for plastic pipe discharge according to claim 1, characterized in that, The other end of the mounting cylinder (8) is provided with a mounting groove (9), and a pressure sensor (10) is installed on one side of the inner wall of the mounting groove (9) by bolts.

4. The pipe size detection mechanism for plastic pipe discharge according to claim 3, characterized in that, The bottom end of the pressure sensor (10) is bolted to a connecting spring (25), and the top end of the sliding block (21) is bolted to the bottom end of the connecting spring (25).

5. The pipe size detection mechanism for plastic pipe discharge according to claim 1, characterized in that, The guide assembly (1) includes two parallel support frames (3), and four insertion holes (4) are provided on one side of the outer wall of the support frame (3). A guide cylinder (5) is welded between the two support frames (3).

6. The pipe size detection mechanism for plastic pipe discharge according to claim 5, characterized in that, The guide cylinder (5) has electric push rods (6) bolted to all four outer walls, and the output end of the electric push rods (6) is bolted to a limit plate (7).

Images