A bend end face flatness detection mechanism

Abstract

The utility model discloses a kind of elbow end face flatness detection mechanism, including support assembly, the top side of which is equipped with the clamping fixture component for clamping fixed elbow and the anti-deviation component for preventing elbow turning, and the anti-deviation component is equipped above the clamping fixture component, the top side of another side of support assembly is equipped with the detection component for elbow end face flatness detection, and mechanical arm for adjusting the measurement position of detection component and driving detection component rotation measurement is equipped between support assembly and detection component;By clamping fixture component, flexible adjustment clamping spacing can be adapted to elbow of different diameters, and mechanical arm and mounting seat can adjust the position of detection component to adapt elbow of different angles;Adopt dial gauge and laser displacement sensor double detection components symmetrically arranged, data is synchronously collected from both sides of elbow end face, effectively avoids the error of single detection component;Meanwhile, mechanical arm can drive detection component rotation measurement, realize end face full circle detection.

Description

Technical Field

[0001] This utility model relates to the field of elbow detection technology, and in particular to an elbow end face flatness detection mechanism. Background Technology

[0002] In pipeline systems, elbows are core fittings for changing the direction of pipelines. Their applications cover multiple fields such as petroleum, chemical, construction, and water conservancy. Common angles include 45°, 90°, 180°, and other uncommon angles customized according to engineering needs. Materials include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals, and plastics.

[0003] The flatness of the elbow end face directly affects the sealing and stability of the pipeline connection. If the flatness of the end face does not meet the standard, it is easy to cause problems such as leakage at the pipeline connection and increased pressure loss. Therefore, the flatness test of the end face is a key quality control link before the elbow leaves the factory.

[0004] The existing patent document with publication number CN211401062U discloses a factory inspection device for 11.25-degree elbows. Although it can achieve some inspection functions through the flatness inspection structure and the positioning arc surface comparison structure, in practical applications, it is only designed for elbows with a specific angle (11.25 degrees) and cannot meet the inspection needs of elbows with multiple angles and diameters in engineering. The inspection method is highly subjective, relying on manual observation to judge the flatness after applying pigment, making it difficult to quantify the inspection data. It is also easily affected by the operator's experience, resulting in poor consistency of the inspection results and making it difficult to meet the needs of efficient and accurate inspection in mass production.

[0005] To address this, a mechanism for detecting the flatness of elbow end faces is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a mechanism for detecting the flatness of the end face of an elbow, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A mechanism for detecting the flatness of an elbow end face includes a support assembly. One side of the support assembly's top is provided with a clamping assembly for holding and fixing the elbow and an anti-deviation assembly for preventing the elbow from turning. The anti-deviation assembly is positioned above the clamping assembly. Above the other side of the support assembly's top is a detection assembly for detecting the flatness of the elbow end face. A robotic arm is positioned between the support assembly and the detection assembly for adjusting the measurement position of the detection assembly and rotating it for measurement.

[0009] The detection component includes a third adjusting element, which has a mounting base between itself and the end effector of the robotic arm. Two symmetrically arranged U-shaped support plates are movably mounted on the third adjusting element. A dial indicator is mounted on one of the support plates, and a laser displacement sensor is mounted on the other support plate. The detection ends of the dial indicator and the laser displacement sensor are aligned with both sides of the elbow end face. The distance between the detection ends of the dial indicator and the laser displacement sensor is adapted to the diameter of the elbow end face.

[0010] As a preferred technical solution, the support assembly includes a support, a support plate is fixedly connected to one side of the top of the support, a clamping assembly is located on one side of the top of the support, an anti-deviation assembly is located on one side of the support plate, and the robotic arm is fixedly connected to one side of the support and is located away from the support plate.

[0011] As a preferred technical solution, the clamping assembly includes a first adjusting member disposed on one side of the top of the support. The top of the first adjusting member is movably provided with two symmetrically arranged clamping plates in a V-shape, and a bent clamping space is formed between the two clamping plates.

[0012] As a preferred technical solution, the anti-deviation component includes a second adjusting member disposed on one side of the support plate. The second adjusting member has two symmetrically arranged baffles on the side away from the support plate. The baffles are located above the clamping plate, and a limiting space for the bend is formed between the two baffles.

[0013] As a preferred technical solution, the inner wall surface of the clamp is fixedly connected with a first rubber pad that contacts the end of the outer surface of the elbow, and the opposite sides of the two baffles are fixedly connected with a second rubber pad that contacts the curved part of the outer surface of the elbow.

[0014] As a preferred technical solution, the first adjusting member, the second adjusting member, and the third adjusting member have the same structure, and each includes a bracket, a bidirectional screw, a threaded sleeve, and a sliding hole. The two ends of the bidirectional screw are rotatably connected to the bracket. Each of the threaded sleeves has a threaded connection on both sides of the surface of the bidirectional screw. The sliding hole is formed on the surface of the bracket. Wherein:

[0015] The support, support plate, and mounting base are respectively fixedly connected to the corresponding bracket. One side of the clamp and baffle passes through the corresponding sliding hole into the inner cavity of the bracket and is fixedly connected to the threaded sleeve. One side of the support plate is fixedly connected to the corresponding threaded sleeve.

[0016] As a preferred technical solution, one end of the bidirectional screw is fixedly connected to a knob that facilitates the application of force by hand.

[0017] As a preferred technical solution, pointers are fixedly connected to both of the trays. The two pointers are aligned with the detection ends of the dial indicator and the laser displacement sensor, respectively. The inner wall of the pointers is slidably connected to the bracket of the third adjustment component, and the bracket of the third adjustment component is provided with scale lines that cooperate with the pointers.

[0018] This utility model has at least the following beneficial effects:

[0019] This application utilizes a clamping assembly that allows for flexible adjustment of the clamping distance to accommodate elbows of different diameters. The robotic arm, in conjunction with the mounting base, can adjust the position of the detection assembly to accommodate elbows of different angles. This eliminates the need for separate detection equipment for elbows of different specifications, significantly reducing detection costs and improving equipment utilization. The dual-fixing structure of the clamping and anti-deviation assemblies, combined with the design of the first and second rubber pads, ensures the stability of the elbow's posture during detection, providing a foundation for accurate testing. A symmetrical arrangement of dial indicators and laser displacement sensors allows for simultaneous data collection from both sides of the elbow's end face, effectively mitigating errors from a single detection component. Simultaneously, the robotic arm can rotate the detection assembly for measurement, achieving full-circumference end-face inspection. Compared to traditional manual observation methods, the detection data is more objective, quantifiable, and consistent, meeting the quality control requirements of mass production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is an exploded view of the structure of the clamping assembly of this utility model;

[0022] Figure 3 This is an exploded view of the anti-deviation component of this utility model;

[0023] Figure 4 This is an exploded view of the detection component of this utility model;

[0024] Figure 5 This is an exploded view of the structure of the second adjusting component of this utility model.

[0025] In the diagram: 100, support assembly; 110, support base; 120, support plate; 200, clamping assembly; 210, first adjusting component; 220, clamping plate; 230, first rubber pad; 300, anti-deviation assembly; 310, second adjusting component; 320, baffle; 330, second rubber pad; 400, detection assembly; 410, third adjusting component; 420, support plate; 430, dial indicator; 440, laser displacement sensor; 450, pointer; 500, robotic arm; 510, mounting base; 11, bracket; 12, bidirectional screw; 13, threaded sleeve; 14, sliding hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 This utility model provides a mechanism for detecting the flatness of an elbow end face, including a support assembly 100, a clamping assembly 200 for clamping and fixing the elbow, an anti-deviation assembly 300 for preventing the elbow from turning, a detection assembly 400 for detecting the flatness of the elbow end face, and a robotic arm 500 for adjusting the measuring position of the detection assembly 400 and rotating the detection assembly 400 for measurement. The clamping assembly 200 and the anti-deviation assembly 300 are both located on one side of the top of the support assembly 100, and the detection assembly 400 is located above the other side of the top of the support assembly 100. The robotic arm 500 is located between the support assembly 100 and the detection assembly 400. The detection assembly 400 includes a third adjusting member 410, and a mounting base 510 is provided between the third adjusting member 410 and the end effector of the robotic arm 500. Two symmetrically arranged U-shaped support plates 420 are movably mounted on the third adjusting member 410. A dial indicator 430 is mounted on one support plate 420, and an exciter is mounted on the other support plate 420. The optical displacement sensor 440 and laser displacement sensor 440 can be selected as the BD-030 laser displacement sensor. The detection ends of the dial indicator 430 and the laser displacement sensor 440 are aligned with both sides of the elbow end face. The distance between the detection ends of the dial indicator 430 and the laser displacement sensor 440 is adapted to the diameter of the elbow end face. Through the overall structural design of the support component 100, clamping component 200, anti-deviation component 300, detection component 400 and robotic arm 500, a complete elbow end face flatness detection system is constructed: the support component 100 provides a stable installation foundation for each functional component; the clamping component 200 and the anti-deviation component 300 form a double fixation of clamping and limiting to avoid elbow deviation; the robotic arm 500 can drive the detection component 400 to adjust its position and rotate, solving the detection adaptation problem of elbows with different angles; in the detection component 400, the dial indicator 430 and the laser displacement sensor 440 are symmetrically aligned with both sides of the end face to ensure detection coverage and data accuracy. The overall structure has a closed-loop logic, which effectively breaks through the limitations of existing equipment that can only adapt to a single angle and has a limited detection range, and enables stable and comprehensive detection of elbows of various specifications.

[0028] The support assembly 100 includes a support 110, a support plate 120 fixedly connected to one side of the top of the support 110, a clamping assembly 200 located on one side of the top of the support 110, an anti-deviation assembly 300 located on one side of the support plate 120, and a robotic arm 500 fixedly connected to one side of the support 110 and positioned away from the support plate 120. The clamping assembly 200 on the top of the support 110 is used to support the elbow, the anti-deviation assembly 300 on one side of the support plate 120 is used to limit the bend, and the robotic arm 500 is fixed to the support 110 away from the support plate 120. This provides a stable installation foundation for the clamping assembly 200, the anti-deviation assembly 300, and the robotic arm 500, and through reasonable space planning, avoids interference between the components, reserves sufficient operating space for the placement, fixing, and inspection of the elbow, ensures a smooth inspection process, and improves the overall operational reliability of the mechanism.

[0029] The clamping assembly 200 includes a first adjusting member 210 located on one side of the top of the support 110. The top of the first adjusting member 210 is movably provided with two symmetrically arranged clamping plates 220 in a V-shape, forming a clamping space for the elbow between the two clamping plates 220. The clamping assembly 200 adopts an adjustable V-shaped clamping plate 220 design. The V-shaped structure can fit tightly against the outer surface of the elbow, increasing the contact area to improve clamping stability. By adjusting the distance between the two clamping plates 220 through the adjusting member 210, it can not only adapt to elbows of different diameters, breaking the specification limitations of traditional fixed clamping structures, but also avoid excessive squeezing and damage to the workpiece by adjusting the clamping force.

[0030] The anti-deviation component 300 includes a second adjusting member 310 located on one side of the support plate 120. Two symmetrically arranged baffles 320 are movably arranged on the side of the second adjusting member 310 away from the support plate 120. The baffles 320 are located above the clamping plate 220, and a limiting space for the elbow is formed between the two baffles 320. By adjusting the distance between the two baffles 320 through the second adjusting member 310, a precise limiting space can be formed for elbows of different diameters, effectively limiting the lateral deviation and circumferential rotation during the elbow detection process. This design makes up for the deficiency of existing equipment that only clamps without limit, avoids misalignment between the detection component 400 and the end face due to changes in the elbow posture, further improves the stability of the detection process, and ensures the accuracy of the detection data.

[0031] The clamping plate 220 has a first rubber pad 230 fixedly connected to its inner wall surface, which contacts the end of the outer surface of the elbow. The two baffles 320 each have a second rubber pad 330 fixedly connected to their opposite sides, which contacts the curved part of the outer surface of the elbow. This achieves a dual function of protection and anti-slip: on the one hand, the flexible contact of the rubber material can isolate the clamping plate 220 and baffles 320 from the rigid friction with the outer surface of the elbow, preventing scratches and wear on the workpiece surface, especially suitable for elbows made of easily damaged materials such as non-ferrous metals and plastics; on the other hand, the high frictional properties of rubber can increase the frictional force of the contact surfaces between the clamping plate 220 and baffles 320 and the elbow, reducing minute displacements during the inspection process, further strengthening the elbow's fixing effect, and balancing workpiece integrity and clamping stability.

[0032] The first adjusting component 210, the second adjusting component 310, and the third adjusting component 410 have the same structure, and each includes a bracket 11, a bidirectional screw 12, a screw sleeve 13, and a sliding hole 14. The two ends of the bidirectional screw 12 are rotatably connected to the bracket 11 through bearings. The screw sleeve 13 is threaded on both sides of the surface of the bidirectional screw 12. The sliding hole 14 is opened on the surface of the bracket 11. The support 110, the support plate 120, and the mounting base 510 are fixedly connected to the corresponding bracket 11. One side of the clamping plate 220 and the baffle 320 passes through the corresponding sliding hole 14 into the inner cavity of the bracket 11 and is fixedly connected to the screw sleeve 13. One side of the support plate 420 is fixedly connected to the corresponding screw sleeve 13. The adjusting structure of each adjusting component clamping assembly 200, anti-deviation assembly 300, and detection assembly 400 adopts a unified design. With the help of knob operation, the spacing adjustment can be completed without professional tools.

[0033] One end of the bidirectional screw 12 is fixedly connected to a knob for easy hand application of force. The knob at one end of the bidirectional screw 12 provides a convenient point of force application for the operator. The adjustment of the distance can be completed by directly applying force by hand without the need for external tools such as wrenches, simplifying the operation steps and reducing the intensity of manual operation. Especially in batch testing scenarios, it can reduce the time cost of distance adjustment operation, improve the overall testing efficiency, and at the same time avoid damage to the bidirectional screw 12 caused by improper use of tools, thus extending the service life of the component.

[0034] The two trays 420 are each fixedly connected to a pointer 450, which is aligned with the detection ends of the dial indicator 430 and the laser displacement sensor 440, respectively. The inner wall of the pointer 450 is slidably connected to the bracket 11 of the third adjusting component 410, and the bracket 11 of the third adjusting component 410 is provided with scale lines that cooperate with the pointer 450. The pointer 450, in conjunction with the scale lines, converts the distance between the detection ends of the dial indicator 430 and the laser displacement sensor 440 into visual information. Without the need for additional measuring tools, the operator can intuitively judge whether the distance between the detection ends of the dial indicator 430 and the laser displacement sensor 440 is suitable for the elbow end face by looking at the scale indicated by the pointer 450, quickly completing the calibration of the detection component 400 and avoiding deviations in detection data caused by improper detection end distances. At the same time, the scale lines provide a standardized basis for setting detection parameters, ensuring the consistency of parameters when different operators operate, and improving the reliability and traceability of detection results.

[0035] The working principle of this utility model is as follows:

[0036] Preliminary workpiece placement: Place the elbow to be inspected on the clamping assembly 200 on the top of the support 110, so that the end of the elbow is in the clamping space and the bend is in the limiting space, thus completing the preliminary positioning of the workpiece.

[0037] Elbow clamping and fixing: Rotate the knob of the first adjusting piece 210 to drive the corresponding bidirectional screw 12 to rotate; since the threads on both sides of the surface of the bidirectional screw 12 are opposite, the two threaded sleeves 13 on its surface move towards each other along the sliding hole 14 of the bracket 11, thereby driving the two clamping plates 220 to move closer together; until the first rubber pad 230 on the inner wall of the clamping plate 220 is in close contact with the end of the outer surface of the elbow, stop rotating the knob to achieve a stable clamping of the elbow;

[0038] Elbow anti-deviation limit: Rotate the knob of the second adjusting part 310, which in turn drives the corresponding bidirectional screw 12 to rotate, so that the two baffles 320 move towards each other along the sliding hole 14; until the second rubber pad 330 on the inner side of the baffle 320 fits against the bend on the outer surface of the elbow, forming a longitudinal limit on the elbow to prevent the elbow from turning or deviating laterally during the detection process.

[0039] Detection component adjustment: Start the robotic arm 500. Through the end effector of the robotic arm 500 and the mounting base 510, move the detection component 400 to one side of the elbow end face. Adjust the overall position of the detection component 400 so that the detection ends of the dial indicator 430 and the laser displacement sensor 440 are initially aligned with the elbow end face. Then, rotate the knob of the third adjustment component 410 to move the two support plates 420 towards or away from each other. At the same time, observe the pointer 450 and scale lines on the support plates 420 until the distance between the detection ends of the dial indicator 430 and the laser displacement sensor 440 is adapted to the elbow end face and the detection ends are accurately aligned with both sides of the end face.

[0040] Rotation detection and data acquisition: The dial indicator 430 and laser displacement sensor 440 are activated, and the robotic arm 500 drives the detection component 400 to slowly rotate around the elbow end face; during the rotation, the dial indicator 430 and laser displacement sensor 440 simultaneously collect flatness data at different positions on the end face, and provide real-time feedback on the detection results to achieve accurate detection of the entire circumference of the elbow end face and avoid local detection omissions.

[0041] Detection reset and workpiece replacement: After the inspection is completed, rotate the knobs of the clamping assembly 200, the anti-deviation assembly 300, and the detection assembly 400 in the opposite direction to reset the clamping plate 220, the baffle 320, and the support plate 420, and loosen the fixation on the elbow; take out the elbow after inspection, and then place the next workpiece to be inspected. Repeat the above steps to perform continuous inspection.

[0042] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanism for detecting the flatness of an elbow end face, characterized in that, The system includes a support assembly (100), one side of which is provided with a clamping assembly (200) for clamping and fixing the elbow and an anti-deviation assembly (300) for preventing the elbow from turning. The anti-deviation assembly (300) is located above the clamping assembly (200). Above the other side of the top of the support assembly (100), a detection assembly (400) for detecting the flatness of the elbow end face is provided. Between the support assembly (100) and the detection assembly (400), a robotic arm (500) is provided for adjusting the measuring position of the detection assembly (400) and rotating the detection assembly (400) for measurement. The detection component (400) includes a third adjusting member (410), which is mounted on a mounting base (510) between itself and the end effector of the robotic arm (500). Two symmetrically arranged trays (420) with a U-shaped structure are movably mounted on the third adjusting member (410). A dial indicator (430) is mounted on one tray (420), and a laser displacement sensor (440) is mounted on the other tray (420). The detection ends of the dial indicator (430) and the laser displacement sensor (440) are aligned with the two sides of the elbow end face. The distance between the detection ends of the dial indicator (430) and the laser displacement sensor (440) is adapted to the diameter of the elbow end face.

2. The elbow end face flatness detection mechanism according to claim 1, characterized in that: The support assembly (100) includes a support (110), a support plate (120) is fixedly connected to one side of the top of the support (110), the clamping assembly (200) is located on one side of the top of the support (110), the anti-deviation assembly (300) is located on one side of the support plate (120), and the robotic arm (500) is fixedly connected to one side of the support (110) and located away from the support plate (120).

3. The elbow end face flatness detection mechanism according to claim 2, characterized in that: The clamping assembly (200) includes a first adjusting member (210) disposed on one side of the top of the support (110). The top of the first adjusting member (210) is movably provided with two symmetrically arranged clamping plates (220) in a V-shape, and a bent clamping space is formed between the two clamping plates (220).

4. The elbow end face flatness detection mechanism according to claim 3, characterized in that: The anti-deviation assembly (300) includes a second adjusting member (310) disposed on one side of the support plate (120). The second adjusting member (310) has two symmetrically arranged baffles (320) movably disposed on the side away from the support plate (120). The baffles (320) are located above the clamping plate (220), and a limiting space for the bend is formed between the two baffles (320).

5. The elbow end face flatness detection mechanism according to claim 4, characterized in that: The inner wall of the clamp (220) is fixedly connected with a first rubber pad (230) that contacts the end of the outer surface of the elbow, and the two baffles (320) are fixedly connected with a second rubber pad (330) that contacts the bend of the outer surface of the elbow on opposite sides.

6. The elbow end face flatness detection mechanism according to claim 4, characterized in that: The first adjusting member (210), the second adjusting member (310), and the third adjusting member (410) have the same structure, and each includes a bracket (11), a bidirectional screw (12), a threaded sleeve (13), and a sliding hole (14). The two ends of the bidirectional screw (12) are rotatably connected to the bracket (11). The threaded sleeve (13) is threaded on both sides of the surface of the bidirectional screw (12). The sliding hole (14) is opened on the surface of the bracket (11), wherein: The support (110), the support plate (120) and the mounting base (510) are respectively fixedly connected to the corresponding bracket (11). One side of the clamp (220) and the baffle (320) are respectively passed through the corresponding sliding hole (14) into the inner cavity of the bracket (11) and fixedly connected to the threaded sleeve (13). One side of the support plate (420) is fixedly connected to the corresponding threaded sleeve (13).

7. The elbow end face flatness detection mechanism according to claim 6, characterized in that: One end of the bidirectional screw (12) is fixedly connected to a knob that facilitates hand application of force.

8. The elbow end face flatness detection mechanism according to claim 6, characterized in that: A pointer (450) is fixedly connected to each of the two trays (420). The two pointers (450) are aligned with the detection ends of the dial indicator (430) and the laser displacement sensor (440), respectively. The inner wall of the pointer (450) is slidably connected to the bracket (11) of the third adjusting member (410), and the bracket (11) of the third adjusting member (410) is provided with scale lines that cooperate with the pointer (450).

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