PVC pipe fitting defect detection equipment

Abstract

The utility model relates to the technical field of pipe fitting defect detection, in particular to PVC pipe fitting defect detection equipment which comprises a mechanical clamping hand and a base, the base comprises a base plate and a vertical rod, the vertical rod is fixedly connected with the top face of the base plate, the PVC pipe fitting defect detection equipment comprises an appearance detection assembly, a weighing platform and a size detection assembly, and the appearance detection assembly comprises a sliding arm and a scanner. The scanner is rotatably connected with the sliding arm, the sliding arm is slidably connected with the chassis, the weighing platform is fixedly connected with the top of the vertical rod, the size detection assembly is slidably connected with the chassis, and the size detection assembly and the sliding arm can slide in the direction close to or away from the weighing platform. According to the utility model, accurate detection of sampling inspection products of PVC injection molding pipe fittings can be realized, the labor cost is reduced, and the production efficiency and the automation degree are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pipe fitting defect detection, more particularly to a PVC pipe fitting defect detection equipment. BACKGROUND

[0002] PVC injection pipe fitting is a kind of plastic pipe material widely used in construction, municipal, agricultural and other fields, in the production process, a series of timing sampling inspection, including appearance, size and weight sampling inspection, the current operation form is completed a series of sampling inspection operation by artificial, and artificial timing sampling inspection cannot accurately detect each sampling product, even if accurate detection is achieved, it is time-consuming and laborious, and production efficiency is low, therefore, it is necessary to improve the degree of automation of pipe sampling inspection, and design related automatic detection equipment. UTILITY MODEL CONTENTS

[0003] The utility model aims at overcoming the prior art PVC injection pipe fitting in artificial timing sampling inspection cannot accurately detect each sampling product, and it is time-consuming and laborious, provide a kind of PVC pipe fitting defect detection equipment, can realize the accurate detection of PVC injection pipe fitting sampling product, reduce artificial cost and improve production efficiency and degree of automation.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of:

[0005] Provide a kind of PVC pipe fitting defect detection equipment, including mechanical gripper and the base of installation in the one side of mechanical gripper, the base includes bottom disc and vertical rod, the vertical rod is fixedly connected with the top surface of bottom disc, still include appearance detection subassembly, weighing platform and size detection subassembly, the appearance detection subassembly includes slide arm and scanner, the scanner is rotationally connected with the slide arm, the slide arm is slidably connected with the end of bottom disc away from mechanical gripper, the weighing platform is fixedly connected with the top of vertical rod, the size detection subassembly is slidably connected with bottom disc, the size detection subassembly and the slide arm can all slide in the direction close to or away from weighing platform.

[0006] In the working process of the above scheme, the mechanical gripper takes the pipe from the external pipe storage area and places it on the weighing platform. After the weighing platform completes the weighing measurement of the pipe, the sliding arm slides towards the weighing platform, driving the scanner to approach the pipe on the weighing platform. After reaching the position, the scanner starts to scan and detect the appearance of the pipe. After the scanner completes the scanning work, if the appearance of the pipe is correct, the sliding arm slides in the opposite direction, driving the scanner away from the weighing platform. At this time, the size detection assembly slides up from the bottom of the stand to the top of the stand and contacts the pipe on the weighing platform. The size detection assembly can detect the size of the pipe. The whole process of weighing, appearance scanning and size detection does not require too much manual intervention, realizes accurate detection of PVC injection pipe products, reduces labor cost and improves production efficiency and automation degree.

[0007] Further, the appearance detection assembly further comprises an electric rotating table, the sliding arm is provided with a scanning head, the scanning head is provided with a scanning space for accommodating the pipe to be detected, the scanning head is rotationally connected with the scanner through the electric rotating table, and the electric rotating table drives the scanner to rotate clockwise and counterclockwise around the output shaft axis of the electric rotating table. A plurality of high-precision cameras are arranged on the scanner. The appearance of the pipe is scanned and identified by the cameras. Meanwhile, the electric rotating table can control the rotation angle of the scanner, can pause at a certain angle position, and can control the scanner to rotate 160 degrees clockwise and counterclockwise respectively, so as to avoid interference between the scanner and the stand or the mechanical gripper.

[0008] Further, the lifting mechanism is further provided, the size detection assembly is installed on the lifting mechanism and is slidably connected with the base plate through the lifting mechanism; and the lifting mechanism drives the size detection assembly to enter the weighing platform to perform size detection work after the appearance detection assembly completes the appearance scanning of the pipe and exits.

[0009] Further, the size detection assembly comprises a planar two-axis moving table, a measuring head and a linear driving mechanism. The linear driving mechanism is connected with the planar two-axis moving table and drives the planar two-axis moving table to slide in the direction close to or away from the weighing platform. The measuring head is connected with the planar two-axis moving table. The size detection assembly needs to complete two works of accurate positioning and measurement of the pipe on the weighing platform. The planar two-axis moving table can be two groups of orthogonal sliders superimposed through cross rails, similar to a traditional XY platform or a two-axis moving platform, and can complete the work of initial coordinate determination before positioning through manual adjustment or motor driving. The planar two-axis moving table can also be a Cartesian coordinate robot. The planar motion only uses X and Y axes, and the initial coordinate determination before positioning is completed through a driving device of a ball screw, a synchronous belt and a linear motor.

[0010] Further, the linear drive mechanism comprises a moving block, a drive motor and a threaded rod, the drive motor is in transmission connection with the threaded rod, one end of the moving block is fixedly connected with the planar two-axis moving table, and the other end is in threaded connection with the threaded rod, and a sensor is arranged on the measuring head; the transmission form of the linear drive mechanism is screw motor transmission, and the transmission form is selected to accurately control displacement, so that the planar two-axis moving table is positioned, and the sensor is installed on the measuring head and is used for sensing the relative position of the measuring head extending into the inner hole of the pipe fitting, so that the measuring head and the inner wall of the pipe fitting are prevented from colliding.

[0011] Further, the measuring head is also provided with an inner diameter measuring instrument, the planar two-axis moving table comprises an adjusting sliding block, a vertical adjusting guide rail and a horizontal adjusting guide rail, one end of the adjusting sliding block is connected with the measuring head, the other end is in sliding connection with the horizontal adjusting guide rail, and the horizontal adjusting guide rail is in sliding connection with the vertical adjusting guide rail; the vertical adjusting guide rail, the horizontal adjusting guide rail and the adjusting sliding block are connected with an external computer control terminal, the planar two-axis moving table is a two-axis moving platform, the horizontal adjusting guide rail, the vertical adjusting guide rail and the adjusting sliding block are driven by a servo motor controlled by the external control terminal, the inner diameter measuring instrument can measure the inner diameter of the pipe, the relative position of the measuring head and the pipe socket is obtained at this time, the planar two-axis moving table is adjusted and moved in sliding mode to make the measuring head be located at the center of the pipe socket, the four inner diameter measuring instruments are evenly and interval arranged on the measuring head in the circumferential direction, the values measured by the four inner diameter measuring instruments on the measuring head are the same through the movement of the horizontal adjusting guide rail and the vertical adjusting guide rail, the center position is determined, and the positioning and centering work is completed.

[0012] Further, the power rotating piece is also provided, one end of the power rotating piece is fixedly connected with the sliding block, the other end is in rotary connection with the measuring head, and the power rotating piece drives the measuring head to rotate around the axis line of the power rotating piece; the power rotating piece is internally provided with a rotating motor, the rotating motor drives the measuring head to rotate, the inner diameter of the whole circle is measured, the inner diameter out-of-roundness is calculated, and qualified comparison is performed.

[0013] Further, the size detection assembly is arranged on the lifting mechanism and at least two groups are arranged; according to the different structures of the pipe fittings, the number and arrangement forms of the size detection assemblies are also different, for general right-angle pipe fittings, only two groups need to be arranged, and the two groups are vertically distributed, for three-way pipe fittings, three groups need to be arranged, and the three groups of size detection assemblies are sequentially and interval ninety degrees in a plane.

[0014] Further, a plurality of weighing sensors are arranged on the weighing platform, and the weighing sensors are evenly distributed on the weighing platform; the weighing sensors are evenly arranged on the weighing platform, and the accuracy of the weighing measurement is ensured.

[0015] Further, the mechanical gripper is further provided with a spraying device, the spraying device is used for spraying marks on the pipe fitting, and production information or marks of whether detection is qualified are sprayed on the surface of the pipe fitting.

[0016] Compared with the prior art, the PVC pipe fitting defect detection equipment has the beneficial effects that:

[0017] 1. By setting the appearance detection assembly, the weighing platform and the size detection assembly, the whole weighing, appearance scanning and size detection process does not need too much manual intervention, realizes accurate detection of the PVC injection pipe fitting sampling product, and reduces the labor cost and improves the production efficiency and the automation degree.

[0018] 2. The built-in motor of the plane two-axis moving table provides moving power for the vertical adjusting guide rail, the horizontal adjusting guide rail and the adjusting sliding block, the inner diameter measuring instrument can measure the inner diameter of the pipe, at this time, the relative position of the measuring head and the pipe socket is obtained, the plane two-axis moving table is slidably adjusted and moved, so that the measuring head is located at the center of the pipe socket, positioning and centering work is completed, and the accuracy of the whole size measuring mechanism is effectively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of a PVC pipe fitting defect detection equipment;

[0020] Figure 2 It is a structural schematic view of a PVC pipe fitting defect detection equipment from a top view angle;

[0021] Figure 3 It is a structural schematic view of a scanning head of a PVC pipe fitting defect detection equipment;

[0022] Figure 4 It is a structural schematic view of a size detection assembly of a PVC pipe fitting defect detection equipment;

[0023] Figure 5 It is a structural schematic view of a linear driving mechanism of a PVC pipe fitting defect detection equipment;

[0024] Figure 6 It is a size detection mechanism arrangement schematic view of a two-way straight pipe fitting of a PVC pipe fitting defect detection equipment;

[0025] Figure 7 It is a size detection mechanism arrangement schematic view of a two-way elbow pipe fitting of a PVC pipe fitting defect detection equipment;

[0026] Figure 8 It is a size detection mechanism arrangement schematic view of a three-way pipe fitting of a PVC pipe fitting defect detection equipment;

[0027] Figure 9It is a four-way pipe size detection mechanism arrangement schematic view of a PVC pipe defect detection equipment;

[0028] Figure 10 It is a structure schematic view of a plane two-axis moving table of a PVC pipe defect detection equipment.

[0029] Figure 11 It is a mechanical gripper structure schematic view of a PVC pipe defect detection equipment.

[0030] In the drawings: 100, mechanical gripper; 110, spraying device; 200, base; 210, bottom disc; 220, vertical rod; 300, appearance detection assembly; 310, sliding arm; 311, scanning head; 320, electric rotating table; 330, scanner; 400, weighing platform; 410, weighing sensor; 500, size detection assembly; 510, plane two-axis moving table; 511, adjusting sliding block; 512, vertical adjusting guide rail; 513, transverse adjusting guide rail; 520, measuring head; 521, inner diameter measuring instrument; 530, linear drive mechanism; 531, moving block; 532, drive motor; 533, threaded rod; 540, power rotating piece; 600, lifting mechanism. DETAILED DESCRIPTION

[0031] The utility model will be further explained in connection with specific implementation. Among them, the drawings are only for example explanation, and the representation is only schematic diagram, and can not be understood as the restriction of the patent; in order to better explain the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of actual product is not represented; for those skilled in the art, it is understandable that some well-known structures and their description in the drawings can be omitted.

[0032] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if there are terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore the positional relationship description term in the drawings is only for example explanation, and can not be understood as the restriction of the patent, for the ordinary skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific situation.

[0033] Embodiment 1

[0034] The embodiment is a first embodiment of a PVC pipe defect detection equipment, as shown in Figures 1 to 4As shown, including mechanical gripper 100 and installed on one side of the base 200, 200, including the base plate 210 and vertical rod 220, vertical rod 220 and the top surface of the base plate 210 is fixedly connected, including appearance detection assembly 300, weighing platform 400 and size detection assembly 500, appearance detection assembly 300 including slide arm 310 and scanner 330, scanner 330 and slide arm 310 rotationally connected, slide arm 310 and the end of the base plate 210 away from the mechanical gripper 100 is connected, weighing platform 400 and the top of the vertical rod 220 is fixedly connected, size detection assembly 500 and the base plate 210 is connected, size detection assembly 500 and slide arm 310 can be slid along the direction of approaching or away from the weighing platform 400.

[0035] Specifically, appearance detection assembly 300 further includes electric rotating table 320, slide arm 310 is provided with scanning head 311, scanning head 311 is provided with scanning space containing the pipe fittings to be detected, scanning head 311 is rotationally connected with scanner 330 through electric rotating table 320, electric rotating table 320 drives scanner 330 to rotate clockwise and counterclockwise around the output shaft axis of electric rotating table 320; A plurality of high-precision cameras are arranged on scanner 330, the appearance of the pipe fittings is scanned and identified by the cameras, at the same time, electric rotating table 320 can control the rotation angle of scanner 330, can pause at a certain angle position, control scanner 330 to rotate 160 degrees clockwise and counterclockwise respectively, avoid interference between scanner 330 and vertical rod 220 of base 200 or mechanical gripper 100.

[0036] Specifically, further including lifting mechanism 600, size detection assembly 500 is installed on lifting mechanism 600 and is connected with base plate 210 through lifting mechanism 600; After appearance detection assembly 300 completes the appearance scanning of the pipe fittings and exits, lifting mechanism 600 drives size detection assembly 500 to enter weighing platform 400 to perform size detection work.

[0037] Specifically, the size detection assembly 500 includes a planar two-axis moving table 510, a measuring head 520, and a linear driving mechanism 530. The linear driving mechanism 530 is connected with the planar two-axis moving table 510 and drives the planar two-axis moving table 510 to slide in the direction of approaching or moving away from the weighing platform 400. The measuring head 520 is connected with the planar two-axis moving table 510. The size detection assembly 500 needs to complete accurate positioning of the pipe on the weighing platform 400 and measurement of two works. The planar two-axis moving table 510 can be two groups of orthogonal sliders superimposed through cross rails, similar to a traditional XY platform or a two-axis moving platform, and the initial coordinate determination work before positioning is completed through manual adjustment or motor-driven form. The planar two-axis moving table 510 can also be a Cartesian coordinate robot. The planar motion only uses X and Y axes, and the initial coordinate determination work before positioning is completed through a ball screw, a synchronous belt, and a linear motor driving device.

[0038] The working principle of the PVC pipe defect detection equipment in the embodiment is as follows:

[0039] The mechanical gripper 100 clamps and places the pipe from the external pipe storage area on the weighing platform 400. After the weighing platform 400 completes the weighing measurement of the pipe, the sliding arm 310 slides, the scanning head 311 approaches the weighing platform 400, and the scanner 330 starts to rotate 160 degrees clockwise and then 320 degrees counterclockwise around the weighing platform 400. The scanning detection of the appearance of the pipe is completed through such forward and backward rotation for several times. The sliding arm 310 slides to drive the scanning head 311 away from the weighing platform 400. The lifting mechanism 600 is started to drive the size detection mechanism to rise and approach the weighing platform 400. The planar two-axis moving table 510 completes the centering work, and the measuring head 520 performs the measurement.

[0040] The PVC pipe defect detection equipment in the embodiment has the following beneficial effects: Through the arrangement of the appearance detection assembly 300, the weighing platform 400, and the size detection assembly 500, the weighing, appearance scanning, and size detection processes do not need too much manual intervention, accurate detection of the PVC injection pipe product is realized, manual cost is reduced, and production efficiency and automation degree are improved.

[0041] Embodiment 2

[0042] The second embodiment of the PVC pipe defect detection equipment is shown in Figures 1 to 5 and Figure 10 The difference between the second embodiment and the first embodiment is that:

[0043] Specifically, the linear drive mechanism 530 includes a moving block 531, a drive motor 532 and a threaded rod 533, the drive motor 532 is in transmission connection with the threaded rod 533, one end of the moving block 531 is fixedly connected with the planar two-axis moving table 510, the other end is in threaded connection with the threaded rod 533, and a sensor is arranged on the measuring head 520; the transmission form of the linear drive mechanism 530 is screw motor transmission, and the transmission form is selected to accurately control displacement, so as to facilitate positioning of the planar two-axis moving table 510; the sensor is installed on the measuring head 520 and is used for sensing the relative position of the measuring head 520 extending into the inner hole of the pipe fitting, so as to avoid collision between the measuring head 520 and the inner wall of the pipe fitting.

[0044] Specifically, the measuring head 520 is further provided with an inner diameter measuring instrument 521, the planar two-axis moving table 510 includes an adjusting sliding block 511, a vertical adjusting guide rail 512 and a horizontal adjusting guide rail 513, one end of the adjusting sliding block 511 is connected with the measuring head 520, the other end is in sliding connection with the horizontal adjusting guide rail 513, and the horizontal adjusting guide rail 513 is in sliding connection with the vertical adjusting guide rail 512; the vertical adjusting guide rail 512, the horizontal adjusting guide rail 513 and the adjusting sliding block 511 are all connected with an external computer control terminal, the planar two-axis moving table 510 is a two-axis moving platform, the servo motor is driven by the external control terminal to drive the horizontal adjusting guide rail 513, the vertical adjusting guide rail 512 and the adjusting sliding block 511, the inner diameter measuring instrument 521 can measure the inner diameter of the pipe, at this time, the relative position of the measuring head 520 and the pipe fitting socket is obtained, the planar two-axis moving table 510 is adjusted and moved in sliding mode to make the measuring head 520 located at the center of the pipe fitting socket, the four inner diameter measuring instruments 521 are evenly and spacedly arranged on the measuring head 520 in the circumferential direction, the values measured by the four inner diameter measuring instruments 521 on the measuring head 520 are made same through movement of the horizontal adjusting guide rail 513 and the vertical adjusting guide rail 512, the center position is determined, and the positioning work is completed.

[0045] Specifically, the power rotating piece 540 is further included, one end of the power rotating piece 540 is fixedly connected with the sliding block, the other end is in rotary connection with the measuring head 520, and the power rotating piece 540 drives the measuring head 520 to rotate around the axis line of the power rotating piece 540; the power rotating piece 540 is internally provided with a rotating motor, the rotating motor drives the measuring head 520 to rotate, the inner diameter of a whole circle is measured, the inner diameter out-of-roundness is calculated, and qualified comparison is performed.

[0046] The working principle of the PVC pipe fitting defect detection equipment in the embodiment is as follows:

[0047] The driving motor 532 drives the planar two-axis moving table 510 to move through the screw rod and the moving block 531, so that one end of the measuring head 520 slightly enters the socket of the pipe fitting. The inner diameter measuring instrument 521 measures the relative position between the measuring head 520 and the inner wall of the socket of the pipe fitting, and uploads the data to the external computer control terminal. The sliding block 511, the vertical adjusting guide rail 512 and the horizontal adjusting guide rail 513 are moved relative to each other under the control of the external computer control terminal, so that the measuring head 520 is located at the center position of the socket of the pipe fitting, and the centering is completed. The driving motor 532 drives the measuring head 520 to continue to enter the inside of the pipe fitting, and the power rotating part 540 drives the measuring head 520 to rotate, so that the inner diameter measuring instrument 521 measures the diameter of the inner wall of the pipe fitting in one revolution, and calculates the inner diameter out-of-roundness.

[0048] The beneficial effects of the embodiment are that the sliding adjustment and movement of the planar two-axis moving table 510 enable the measuring head 520 to be located at the center of the socket of the pipe fitting, and the positioning and centering work is completed, thereby effectively ensuring the accuracy of the entire size measuring mechanism.

[0049] Embodiment 3

[0050] The third embodiment of the PVC pipe fitting defect detection equipment is shown in Figures 6 to 11 The difference between the embodiment 1 and the third embodiment is that the size detection assembly 500 is arranged on the lifting mechanism 600 in at least two groups. According to the different structures of the pipe fittings, the number and arrangement form of the size detection assembly 500 are also different. For general right-angle pipe fittings, only two groups of size detection assemblies 500 are needed, which are vertically distributed. For three-way pipe fittings, three groups of size detection assemblies 500 are needed, which are sequentially and uniformly distributed in a plane at intervals of 90 degrees.

[0051] Specifically, a plurality of weighing sensors 410 are arranged on the weighing platform 400, and the weighing sensors 410 are uniformly distributed on the weighing platform 400. The weighing sensors 410 are uniformly arranged on the weighing platform 400 to ensure the accuracy of the weighing measurement.

[0052] Specifically, the mechanical gripper 100 is further provided with a spraying device 110, which is used for spraying marks on the pipe fitting to spray the production information of the pipe fitting or the marks indicating whether the pipe fitting is qualified or not on the surface of the pipe fitting.

[0053] The working principle of the PVC pipe fitting defect detection equipment is as follows:

[0054] When the pipe fitting is a general two-port straight pipe, as shown in Figure 6 two size detection mechanisms are arranged on the platform at an angle of 180 degrees and detect the pipe fitting at the sockets at both ends. When the pipe fitting is a two-port right-angle elbow pipe, as shown in Figure 7 two size detection mechanisms are arranged on the platform at an angle of 90 degrees. When the pipe fitting is a three-way pipe, as shown inFigure 8 As shown, the three size detection mechanisms are arranged on the platform in sequence with an interval of 90 degrees, when the pipe is a four-way pipe, if the plane of the weighing platform 400 is a square, the four size detection mechanisms can be arranged on two opposite diagonal lines of the square, if the weighing platform 400 is a rectangle, the four size detection mechanisms are arranged at the midpoints of the length of the rectangle, after completing all detection work, the mechanical gripper 100 clamps the pipe, and the spraying device 110 on the mechanical gripper 100 sprays and marks the pipe.

[0055] The beneficial effects of the embodiment are as follows:

[0056] Different numbers of size detection mechanisms are arranged for different types of pipes, compared with only arranging one size detection mechanism, the mechanical gripper 100 does not need to clamp and rotate the pipe multiple times to detect each socket of the pipe, and the detection efficiency is effectively improved.

[0057] In the specific contents of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction, in order to make the description simple, all possible combinations of the above technical features are not described, however, as long as the combination of the technical features does not exist contradiction, it should be considered as the scope of the present application.

[0058] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A PVC pipe fitting defect detection device, comprising a mechanical gripper (100) and a base (200) mounted on one side of the mechanical gripper (100), the base (200) comprising a chassis (210) and a vertical rod (220), the vertical rod (220) being fixedly connected to the top surface of the chassis (210), characterized in that, It also includes an appearance inspection component (300), a weighing platform (400), and a size inspection component (500). The appearance inspection component (300) includes a sliding arm (310) and a scanner (330). The scanner (330) is rotatably connected to the sliding arm (310). The sliding arm (310) is slidably connected to the end of the chassis (210) away from the mechanical gripper (100). The weighing platform (400) is fixedly connected to the top of the upright (220). The size inspection component (500) is slidably connected to the chassis (210). Both the size inspection component (500) and the sliding arm (310) can slide in a direction close to or away from the weighing platform (400).

2. The PVC pipe fitting defect detection equipment according to claim 1, characterized in that, The appearance inspection component (300) also includes an electric rotary table (320), the slide arm (310) is provided with a scanning head (311), the scanning head (311) is provided with a scanning space to accommodate the tube to be inspected, the scanning head (311) is rotatably connected to the scanner (330) through the electric rotary table (320), and the electric rotary table (320) drives the scanner (330) to rotate clockwise and counterclockwise around the axis of the output shaft of the electric rotary table (320).

3. The PVC pipe fitting defect detection equipment according to claim 1, characterized in that, It also includes a lifting mechanism (600), on which the size detection component (500) is mounted and slidably connected to the chassis (210) via the lifting mechanism (600).

4. The PVC pipe fitting defect detection equipment according to claim 3, characterized in that, The dimension detection component (500) includes a planar two-axis moving stage (510), a measuring head (520), and a linear drive mechanism (530). The linear drive mechanism (530) is connected to the planar two-axis moving stage (510) and drives the planar two-axis moving stage (510) to slide in a direction close to or away from the weighing platform (400). The measuring head (520) is connected to the planar two-axis moving stage (510).

5. A PVC pipe fitting defect detection device according to claim 4, characterized in that, The linear drive mechanism (530) includes a moving block (531), a drive motor (532), and a threaded rod (533). The drive motor (532) is connected to the threaded rod (533) in a transmission connection. One end of the moving block (531) is fixedly connected to the planar two-axis moving stage (510), and the other end is threadedly connected to the threaded rod (533). A sensor is provided on the measuring head (520).

6. The PVC pipe fitting defect detection equipment according to claim 4, characterized in that, The measuring head (520) is also equipped with an inner diameter measuring instrument (521). The planar two-axis moving stage (510) includes an adjusting slider (511), a vertical adjusting guide rail (512), and a horizontal adjusting guide rail (513). One end of the adjusting slider (511) is connected to the measuring head (520), and the other end is slidably connected to the horizontal adjusting guide rail (513). The horizontal adjusting guide rail (513) is slidably connected to the vertical adjusting guide rail (512).

7. A PVC pipe fitting defect detection device according to claim 6, characterized in that, The size detection component (500) also includes a power rotating component (540), one end of which is fixedly connected to the adjusting slider (511), and the other end is rotatably connected to the measuring head (520). The power rotating component (540) drives the measuring head (520) to rotate around its own axis.

8. A PVC pipe fitting defect detection device according to any one of claims 3-7, characterized in that, At least two sets of the size detection components (500) are provided on the lifting mechanism (600).

9. A PVC pipe fitting defect detection device according to claim 1, characterized in that, The weighing platform (400) is provided with a plurality of weighing sensors (410), which are evenly distributed on the weighing platform (400).

10. A PVC pipe fitting defect detection device according to claim 1, characterized in that, The mechanical gripper (100) is also equipped with a spraying device (110).

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