Automobile pipe fittings detection device and detection method

Abstract

The present invention relates to the technical field of workpiece size detection, and specifically to an automobile pipe type accessory detection device and detection method; the device comprises a base; a lower rotating groove is arranged at the center of the upper surface of the base; the lower rotating groove is rotatably connected to a lower turntable; the lower surface of the lower turntable is connected to the bottom of the lower rotating groove by a motor; lower detection grooves are evenly arranged around the center of the upper surface of the lower turntable; a lower detection column is movably connected up and down in the lower detection groove; lower contact grooves are evenly arranged on the outer wall of the lower detection column; a lower contact block is movably connected in the lower contact groove; a lower pressure sensor is arranged at the bottom of the lower contact groove; the present invention realizes loading-detection-unloading of pipe fittings in the process of rotation of the lower turntable by cooperating with a rotating lower ring disc and a lower ring seat with an inclined upper surface, and since other pipe fittings are continuously detected during the loading and unloading of one pipe fitting, the detection efficiency of the pipe fittings is higher and more automated.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece size detection, in particular to a detection device and a detection method for automobile pipe accessories. Background Art

[0002] During the processing and manufacturing of automotive parts, the manufactured tubular accessories need to be inspected for size, such as inner diameter inspection. The inner diameter inspection of automotive pipe fittings is generally measured with an inner diameter ruler, and for the deeper position inside the automotive pipe fittings, some inspection devices are needed to measure the inner diameter. When the inner diameter of the automotive pipe fitting is within the error range of the processing size, it means that the automotive pipe fitting meets the manufacturing requirements.

[0003] After the inspectors place the automobile pipe fittings to be inspected on the inspection device, the inspection device will control the inspection components to measure the automobile pipe fittings. After the automobile pipe fittings are inspected, the inspectors will remove the automobile pipe fittings from the inspection device to replace them with new ones to be inspected. It is not difficult to find that the inspection of each automobile pipe fitting requires loading, testing and unloading. Only after each automobile pipe fitting is inspected and unloaded can new pipe fittings to be tested be loaded and inspected. For batch inspection, this is undoubtedly a great waste of inspection time, resulting in low efficiency in automobile pipe inspection.

[0004] In view of this, in order to overcome the above technical problems, the present invention proposes an automobile pipe fitting detection device and a detection method, which solve the above technical problems. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art, the present invention proposes an automobile pipe fittings detection device and detection method. The present invention cooperates with a rotating lower ring disk and a lower ring seat with an inclined upper surface, so that the pipe fittings can complete loading-detection-unloading during the rotation of the lower turntable. Since the other pipe fittings are continuously detected during the loading and unloading of one pipe fitting, the detection efficiency of the pipe fittings is higher and more automated.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an automobile pipe-type accessory detection device described in the present invention comprises a base; a lower rotating groove is arranged at the center of the upper surface of the base; the lower rotating groove is rotatably connected to the lower turntable; the lower surface of the lower turntable and the bottom of the lower rotating groove are connected by a motor; lower detection grooves are evenly arranged around the center on the upper surface of the lower turntable; the lower detection column is movably connected up and down in the lower detection groove; lower touch grooves are evenly arranged on the outer wall of the lower detection column; the lower contact block is movably connected in the lower contact groove; a lower pressure sensor is arranged at the bottom of the lower touch groove; the lower contact block is connected to the lower pressure sensor by a lower spring; the end of the lower contact block away from the corresponding lower spring is conical; the lower surface of the lower detection column is connected to the lower rod; the lower end of the lower rod passes through the lower turntable downward and abuts against the lower ring seat; the upper surface of the lower ring seat is inclined.

[0007] Preferably, the detection position is above the highest point on the upper surface of the lower ring seat; the material change position is above the lowest point on the upper surface of the lower ring seat; a lower ring groove is provided on the upper surface of the lower ring seat; the lower block is movably connected in the lower ring groove; the lower block is fixedly connected to the corresponding lower rod at the lower end; the axial length of the lower detection column is smaller than the axial length of the lower detection groove.

[0008] Preferably, the upper end of the lower rod is rotatably connected to the center of the lower surface of the lower detection column; the inner wall of the lower detection groove is provided with a lower spiral groove; the lower groove block is movably connected in the lower spiral groove; the lower groove block is fixedly connected to the lower outer wall of the lower detection column.

[0009] Preferably, the top of the base is fixedly connected to the top seat by a supporting plate; an upper rotating groove is provided at the center of the lower surface of the top seat; the upper turntable is rotatably connected in the upper rotating groove; the lower surface of the upper turntable is evenly provided with annular protective grooves around the center; the protective groove is located directly above the corresponding lower detection groove; an annular protective sleeve is movably connected in the protective groove; the upper end of the protective sleeve is connected to the upper rod; the upper end of the upper rod passes through the upper turntable and is fixedly connected to the upper block; the center of the lower turntable is fixedly connected to the center of the upper turntable through the center rod; the bottom of the upper rotating groove is fixedly connected to the upper ring seat; the lower surface of the upper ring seat is inclined; the highest point of the lower surface of the upper ring seat is located directly above the material changing position, and the lowest point of the lower surface of the upper ring seat is located directly above the detection position; the lower surface of the upper ring seat is provided with an upper ring groove; the upper block is movably connected in the upper ring groove.

[0010] Preferably, an annular guide surface is provided at a lower position of the inner wall of the protective sleeve; the guide surface is inclined toward the inner side of the protective sleeve; and the guide surface guides the pipe fitting during the downward movement of the protective sleeve.

[0011] Preferably, the axial length of the protective sleeve is smaller than the axial length of the protective groove; the inclination of the lower surface of the upper ring seat is greater than the inclination of the upper surface of the lower ring seat; and the lower detection column extends out of the lower detection groove after the protective sleeve extends out of the protective groove.

[0012] Preferably, the inner wall of the protective sleeve is evenly provided with upper contact grooves around the center of the protective sleeve; the upper contact block is movably connected in the upper contact groove; the upper contact block is connected to the bottom of the upper contact groove through an upper spring; and the end of the upper contact block away from the corresponding upper spring is conical.

[0013] Preferably, an upper pressure sensor is provided at the bottom of the upper contact groove; one end of the upper spring is connected to the upper contact block, and the other end is connected to the upper pressure sensor.

[0014] Preferably, the protective groove is provided with an upper spiral groove near the outer groove wall; the upper spiral groove has an opposite spiral direction to the lower spiral groove; an upper groove block is movably connected inside the upper spiral groove; the upper groove block is fixedly connected to the upper position of the outer wall of the protective sleeve; an annular groove is provided on the upper surface of the protective sleeve; and the upper rod is movably connected to the annular groove at the lower end.

[0015] A method for detecting automobile tubular accessories, which is applicable to the above-mentioned automobile tubular accessories detection device, has the following steps:

[0016] S1: The inspector removes the inspected pipes around the material change position and replaces them with new pipes to be inspected. The lower turntable rotates under the control of the motor, and the lower turntable drives the upper turntable to rotate through the center rod;

[0017] S2: When the pipe fitting approaches the detection position, the protective cover rotates and moves downward and moves out of the corresponding protective groove. The upper contact block enters the outside of the pipe fitting after the upper contact groove exposes the corresponding protective groove. The pipe fitting is covered by the protective cover, and the upper contact block makes a spiral motion on the outer wall of the pipe fitting, and the upper pressure sensor collects data; the lower detection column extends out of the lower detection groove after the corresponding protective cover extends out of the protective groove, and the lower detection rotates and moves upward and moves out of the corresponding lower detection groove. The lower contact block enters the inside of the pipe fitting after the lower contact groove exposes the corresponding lower detection groove, and the lower contact block makes a spiral motion on the inside of the pipe fitting, and the lower pressure sensor collects data;

[0018] S3: When the pipe is close to the material change position, the protective sleeve retracts to the corresponding protective groove, the upper contact block retracts to the corresponding upper contact groove, the lower detection column retracts to the lower detection groove, and the lower contact block retracts to the lower contact groove. After the pipe moves to the material change position, a new round of material change is carried out;

[0019] S4: The control system converts the data of the upper pressure sensor and the lower pressure sensor to obtain the data of the inner and outer diameters, concentricity and cylindricity, and completes the detection process of the pipe fittings.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention uses a rotating lower ring disc to cooperate with a lower ring seat with an inclined upper surface, so that the pipe fittings can be loaded, inspected and unloaded during the rotation of the lower turntable. Since the other pipe fittings are continuously inspected during the loading and unloading of one pipe fitting, the inspection efficiency of the pipe fittings is higher and more automated.

[0022] 2. In the present invention, since the inclination degree of the lower surface of the upper ring seat is greater than the inclination degree of the upper surface of the lower ring seat, the lower detection column will extend out of the lower detection groove only after the protective sleeve extends out of the protective groove. In this way, the protective sleeve covers the outer side of the pipe fitting before the lower detection column extends into the inner side of the pipe fitting, thereby protecting the outer side of the pipe fitting to prevent the pipe fitting from shifting during the rotation of the lower turntable and also preventing the pipe fitting from tipping over, thereby improving the stability of the pipe fitting during the detection process.

[0023] 3. The present invention cooperates with the upper contact block on the inner wall of the protective sleeve and the lower contact block on the outer wall of the lower detection column, thereby synchronously realizing the detection of inner and outer diameters, cylindricity and concentricity during the movement of the pipe fitting. Compared with other detection devices, the detection of the present invention can perform multi-parameter detection at the same time and has a wider detection range. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0025] Figure 1 is a stereogram of the detection device of the present invention;

[0026] Figure 2 is a three-dimensional diagram of the base in the present invention;

[0027] Figure 3 is a three-dimensional diagram of the top seat in the present invention;

[0028] Figure 4 is a cross-sectional view of the detection device of the present invention;

[0029] Figure 5 yes Figure 4 The enlarged view of point A in the middle;

[0030] Figure 6 It is a flow chart of the method of the present invention.

[0031] In the figure: base 1, lower rotating groove 11, support plate 12, lower turntable 2, motor 21, lower detection groove 22, lower spiral groove 23, lower groove block 24, center rod 25, lower detection column 3, lower touch groove 31, lower touch block 32, lower pressure sensor 33, lower spring 34, lower rod 35, lower ring seat 4, detection position 41, material change position 42, lower ring groove 43, lower block 44, top seat 5, upper rotating groove 51, upper turntable 6, protective groove 61, upper spiral groove 62, upper groove block 63, protective sleeve 7, upper rod 71, upper block 72, guide surface 73, upper touch groove 74, upper contact block 75, upper spring 76, upper pressure sensor 77, annular groove 78, upper ring seat 8, upper ring groove 81, pipe fitting 99. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figures 1 to 6 As shown, the present invention includes the following embodiments:

[0034] Embodiment 1, a device for detecting automobile pipe-type accessories, comprising a base 1; a lower rotating groove 11 is arranged at the center of the upper surface of the base 1; the lower rotating groove 11 is rotatably connected to the lower turntable 2; the lower surface of the lower turntable 2 is connected to the bottom of the lower rotating groove 11 by a motor 21; lower detection grooves 22 are evenly arranged around the center of the upper surface of the lower turntable 2; a lower detection column 3 is movably connected to the lower detection groove 22; lower contact grooves 31 are evenly arranged on the outer wall of the lower detection column 3; a lower contact block 32 is movably connected to the lower contact groove 31; a lower pressure sensor 33 is arranged at the bottom of the lower contact groove 31; the lower contact block 32 is connected to the lower pressure sensor 33 by a lower spring 34; the end of the lower contact block 32 away from the corresponding lower spring 34 is conical; the lower surface of the lower detection column 3 is connected to a lower rod 35; the lower end of the lower rod 35 passes through the lower turntable 2 downward and abuts against the lower ring seat 4; the upper surface of the lower ring seat 4 is inclined.

[0035] In this embodiment, the detection position 41 is above the highest point on the upper surface of the lower ring seat 4; the material change position 42 is above the lowest point on the upper surface of the lower ring seat 4; a lower ring groove 43 is provided on the upper surface of the lower ring seat 4; a lower block 44 is movably connected in the lower ring groove 43; the lower block 44 is fixedly connected to the corresponding lower rod 35 at the lower end; the axial length of the lower detection column 3 is less than the axial length of the lower detection groove 22.

[0036] In this embodiment, the upper end of the lower rod 35 is rotatably connected to the center of the lower surface of the lower detection column 3; the inner wall of the lower detection groove 22 is provided with a lower spiral groove 23; the lower groove block 24 is movably connected in the lower spiral groove 23; the lower groove block 24 is fixedly connected to the lower position of the outer wall of the lower detection column 3.

[0037] During operation, the inspector moves the automobile tubular fittings to the front side of the inspection device, and then places the tubular fittings at the material changing position 42 on the upper surface of the lower turntable 2. The automobile tubular fittings are called pipe fittings 99. After the pipe fittings 99 are placed at the material changing position 42, the corresponding lower inspection slots 22 will be covered. As the motor 21 works, the motor 21 will drive the lower turntable 2 to rotate, and the lower turntable 2 will rotate in the lower rotating slot 11. During the rotation of the lower turntable 2, multiple lower inspection slots 22 will be driven to move around the center of the lower turntable 2. During the movement of the lower inspection slots 22, the inner lower inspection column 3 will be driven to move around the center of the lower turntable 2. Since the lower rod 35 on the lower surface of the lower inspection column 3 is movably connected to the lower ring slot 43 by the lower block 44 at the lower end, and the upper surface of the lower ring seat 4 The lower detection column 3 is arranged to be inclined, so that during the movement of the lower detection column 3 toward the detection position 41, the lower block 44 will gradually move upward under the guidance of the inclined lower ring groove 43, and the lower block 44 will drive the lower rod 35 to gradually move upward during the upward movement, and the lower rod 35 will drive the lower detection column 3 to move upward in the corresponding lower detection groove 22 during the upward movement. Since the lower groove block 24 is fixedly connected to the lower groove block 24 at the lower position of the outer wall of the lower detection column 3, and the lower groove block 24 is movably connected in the lower spiral groove 23, the lower groove block 24 will be driven to move along the lower spiral groove 23 during the upward movement of the lower detection column 3, so that the lower detection column 3 moves upward in the lower detection groove 22 while rotating, and the lower contact groove 31 on the outer wall of the lower detection column 3 is exposed from the notch of the lower detection groove 22 and enters as the lower detection column 3 moves upward. To the inner side of the pipe fitting 99, the pipe fitting 99 remains stable due to its own gravity. After the lower contact groove 31 exposes the notch of the lower detection groove 22, the lower contact block 32 extends out of the lower contact groove 31 under the action of the lower spring 34 and contacts the inner side of the pipe fitting 99. The lower spring 34 is away from the corresponding lower contact block 32 and abuts against the lower pressure sensor 33. Therefore, the abutment of the lower contact block 32 on the inner side of the pipe fitting 99 will be transmitted to the corresponding lower pressure sensor 33 through the lower spring 34. The lower pressure sensor 33 will transmit the data to the control system. Multiple lower contact grooves 31 are at the same axial position of the lower detection column 3 and are evenly distributed around the central axis of the lower detection column 3. Therefore, after the values ​​of the multiple lower pressure sensors 33 on the lower detection column 3 are collected, the inner diameter calculation and cylindricity can be performed. According to the calculation, the inner diameter of the pipe 99 is related to the length of the lower contact block 32 extending out of the lower contact groove 31, and the length of the lower contact block 32 extending out of the lower contact groove 31 is related to the expansion length of the lower spring 34. According to f=k*x and the pressure value of the lower pressure sensor 33, the inner diameter data of the pipe 99 is obtained, and the cylindricity of the pipe 99 is directly reflected by the data of each lower pressure sensor 33. When the data difference of multiple lower pressure sensors 33 is within the standard value range, it means that the cylindricity is qualified, otherwise it is unqualified; because the lower detection column 3 will also rotate during the upward movement, the detection range of the lower contact block 32 on the lower detection column 3 to the inner wall of the pipe 99 is expanded, so that the size detection accuracy of the pipe 99 is greatly improved when more data is obtained;

[0038] When the lower detection column 3 moves to the detection position 41, the lower detection column 3 moves up to the highest point, and then the lower detection column 3 begins to move toward the material replacement position 42 as the lower turntable 2 rotates, and the lower block 44 begins to move downward under the guidance of the lower annular groove 43. During the downward movement of the lower block 44, the lower rod 35 is driven to move downward, and during the downward movement of the lower rod 35, the lower detection column 3 is driven to move downward, and the lower detection column 3 moves downward in the lower detection groove 22. Since the lower groove block 24 is movably connected in the lower spiral groove 23, the lower detection column 3 rotates during the downward movement, and during the downward movement of the lower detection column 3, the lower contact block 32 is driven to perform secondary detection and verification on the inner wall of the pipe 99, and the lower detection column 3 gradually moves downward into the lower detection groove 22, and the tapered end of the lower contact block 32 overcomes the lower spring 34 under the extrusion of the notch of the lower detection groove 22 to retract the lower contact The lower detection column 31 is received, and the lower contact groove 31 enters into the lower detection groove 22 as the lower detection column 3 moves downward, and the upper end of the lower detection column 3 enters into the lower detection groove 22. Since the axial length of the lower detection column 3 is less than the axial length of the lower detection groove 22, the upper end of the lower detection column 3 close to the material replacement position 42 is lower than the notch of the lower detection groove 22, so that enough time is reserved for the material replacement of the inspection personnel. The inspection personnel will remove the pipe fittings 99 that have completed the inspection and replace them with new pipe fittings 99 to be tested. In the process of unloading and loading the pipe fittings 99, the pipe fittings 99 far away from the inspection position 41 are not stopped for inspection, so that the inspection process of the pipe fittings 99 is not delayed, and this cycle is repeated; the pipe fittings 99 have a heavier gravity and can remain stable during the process of the lower contact block 32 entering and moving out of the inner side of the pipe fittings 99;

[0039] The present invention cooperates with the lower ring seat 4 with an inclined upper surface by means of a rotating lower ring disk, so that the pipe fittings 99 can complete loading-detection-unloading during the rotation of the lower turntable 2. Since the other pipe fittings 99 are continuously detected during the loading and unloading of one pipe fitting 99, the detection efficiency of the pipe fittings 99 is higher and more automated.

[0040] In Example 2, the top of the base 1 is fixedly connected to the top seat 5 through the support plate 12; the center of the lower surface of the top seat 5 is provided with an upper rotating groove 51; the upper rotating groove 51 is rotatably connected to the upper turntable 6; the lower surface of the upper turntable 6 is evenly provided with annular protective grooves 61 around the center; the protective groove 61 is located directly above the corresponding lower detection groove 22; the protective groove 61 is movably connected to the annular protective sleeve 7; the upper end of the protective sleeve 7 is connected to the upper rod 71; the upper rod 7 1 passes through the upper turntable 6 and is fixedly connected to the upper block 72; the center of the lower turntable 2 is fixedly connected to the center of the upper turntable 6 through the center rod 25; the bottom of the upper turntable 51 is fixedly connected to the upper ring seat 8; the lower surface of the upper ring seat 8 is inclined; the highest point of the lower surface of the upper ring seat 8 is located directly above the material replacement position 42, and the lowest point of the lower surface of the upper ring seat 8 is located directly above the detection position 41; the lower surface of the upper ring seat 8 is provided with an upper ring groove 81; the upper block 72 is movably connected in the upper ring groove 81.

[0041] In this embodiment, an annular guide surface 73 is provided at the lower position of the inner wall of the protective sleeve 7; the guide surface 73 is inclined toward the inner side of the protective sleeve 7; and the guide surface 73 guides the pipe 99 during the downward movement of the protective sleeve 7.

[0042] In this embodiment, the axial length of the protective sleeve 7 is smaller than the axial length of the protective groove 61; the inclination degree of the lower surface of the upper ring seat 8 is greater than the inclination degree of the upper surface of the lower ring seat 4; the lower detection column 3 extends out of the lower detection groove 22 after the protective sleeve 7 extends out of the protective groove 61.

[0043] In this embodiment, the inner wall of the protective sleeve 7 is evenly provided with upper contact grooves 74 around the center of the protective sleeve 7; the upper contact block 75 is movably connected in the upper contact groove 74; the upper contact block 75 is connected to the bottom of the upper contact groove 74 through an upper spring 76; the end of the upper contact block 75 away from the corresponding upper spring 76 is conical.

[0044] During operation, after the inspectors have finished unloading the inspected pipe 99 and loading the new pipe 99 to be inspected at the material changing position 42, the rotation of the lower turntable 2 will drive the upper turntable 6 to rotate through the center rod 25, and the upper turntable 6 will drive the protective groove 61 to move around the center of the upper turntable 6, and the protective groove 61 will drive the protective sleeve 7 to move, and the protective sleeve 7 will drive the upper rod 71 and the upper block 72 to move in the process of approaching the inspection position 41, and the upper block 72 will be movably connected in the upper ring groove 81, and the upper block 72 will move downward under the guidance of the upper ring groove 81, and the lower rod 35 will be driven downward in the process of the upper block 72 moving downward, and the protective sleeve 7 will be driven downward in the process of the lower rod 35 moving downward. Due to the large inclination of the lower surface of the upper ring seat 8 The inclination degree of the upper surface of the lower ring seat 4 is such that the lower detection column 3 will extend out of the lower detection groove 22 only after the protective sleeve 7 extends out of the protective groove 61. In this way, the protective sleeve 7 covers the outer side of the pipe fitting 99 before the lower detection column 3 extends into the inner side of the pipe fitting 99, thereby protecting the outer side of the pipe fitting 99 to prevent the pipe fitting 99 from shifting during the rotation of the lower turntable 2, and also to prevent the pipe fitting 99 from tipping over, thereby improving the stability of the pipe fitting 99 during the detection process; upper contact grooves 74 are evenly arranged on the inner wall of the protective sleeve 7, and after the upper contact grooves 74 are moved out of the protective groove 61, the upper contact block 75 extends out and abuts against the outer wall of the pipe fitting 99 under the elastic force of the upper spring 76, and a cone is arranged on the end of the upper contact block 75 away from the upper spring 76 The shape of the upper contact block 75 allows the end of the upper contact block 75 away from the upper spring 76 to smoothly enter the outside of the pipe 99, thereby being able to clamp the outer wall of the pipe 99 of different outer diameters, and under the action of the plurality of upper contact blocks 75, the central axis of the pipe 99 is close to the central axis of the lower detection column 3, thereby improving the subsequent detection accuracy of the pipe 99, and the detection of the pipe 99 is more stable after being clamped by the upper contact block 75; in order to allow the protective sleeve 7 to be smoothly sleeved on the outside of the pipe 99, a guide surface 73 is provided at the lower position of the inner wall of the protective sleeve 7, so that under the further guidance of the guide surface 73, the offset pipe 99 can be adjusted in position under the pressure of the guide surface 73 of the protective sleeve 7, so that the pipe 99 can be smoothly The protective sleeve 7 covers it; after the protective sleeve 7 moves to the detection position 41, the protective sleeve 7 starts to move toward the material replacement position 42, and the upper block 72 moves upward under the guidance of the upper ring groove 81. The upper rod 71 and the protective sleeve 7 move upward with the upward movement of the upper block 72. During the upward movement of the protective sleeve 7, the upper contact block 75 will be driven to move upward. The upper contact block 75 retracts into the upper contact groove 74 under the pressure of the lower groove of the protective groove 61 to avoid it until the protective sleeve 7 is retracted into the protective groove 61. Since the axial length of the protective sleeve 7 is less than the axial length of the protective groove 61, the lower end of the protective sleeve 7 close to the material replacement position 42 is higher than the lower groove of the protective groove 61, thereby reserving time for the inspection personnel to change materials, and the cycle is repeated.

[0045] In Embodiment 3, an upper pressure sensor 77 is provided at the bottom of the upper contact groove 74 ; one end of the upper spring 76 is connected to the upper contact block 75 , and the other end is connected to the upper pressure sensor 77 .

[0046] In this embodiment, an upper spiral groove 62 is provided on the outer groove wall of the protective groove 61; the spiral direction of the upper spiral groove 62 is opposite to that of the lower spiral groove 23; an upper groove block 63 is movably connected inside the upper spiral groove 62; the upper groove block 63 is fixedly connected to the upper position of the outer wall of the protective sleeve 7; an annular groove 78 is provided on the upper surface of the protective sleeve 7; and the upper rod 71 is movably connected to the annular groove 78 at the lower end.

[0047] During operation, since an upper pressure sensor 77 is provided at the bottom of the upper contact groove 74, after the upper contact block 75 abuts against the outer wall of the pipe 99, the cylindricality of the outer wall of the pipe 99 can be determined based on the data of multiple upper pressure sensors 77. In addition, after obtaining the data of the upper pressure sensor 77, the outer diameter data of the pipe 99 is obtained through conversion, and in combination with the data of the lower pressure sensor 33, the concentricity of the inner and outer walls of the pipe 99 can also be converted; during the downward movement of the protective sleeve 7, the protective sleeve 7 will drive the upper groove block 63 to move along the upper spiral groove 62, so that the protective sleeve 7 will rotate during the downward movement, thereby expanding the detection range of the upper contact block 75 on the inner side of the protective sleeve 7 to the outer wall of the pipe 99, and improving the detection accuracy. In addition, the upper spiral groove 62 and the lower spiral groove 23 has an opposite spiral direction, so that the downward rotation direction of the protective sleeve 7 is opposite to the upward rotation direction of the lower detection column 3, thereby ensuring the detection effect of the upper contact block 75 and the lower contact block 32 on the pipe 99, avoiding the protective sleeve 7 and the lower detection column 3 rotating in the same direction and driving the pipe 99 to rotate synchronously, and the reverse rotation makes the pipe 99 more stable to complete the detection; during the upward movement of the protective sleeve 7, the upper contact block 75 performs secondary detection; in this embodiment, the upper contact block 75 on the inner wall of the protective sleeve 7 cooperates with the lower contact block 32 on the outer wall of the lower detection column 3, so as to synchronously realize the detection of inner and outer diameters, cylindricity and concentricity during the movement of the pipe 99. Compared with other detection devices, the detection of the present invention can perform multi-parameter detection at the same time, and the detection range is wider.

[0048] Embodiment 4, a method for detecting automobile tubular accessories, the method is applicable to the above-mentioned automobile tubular accessories detection device, and the steps of the method are as follows:

[0049] S1: The inspector removes the inspected pipe 99 around the material replacement position 42 and replaces it with a new pipe 99 to be inspected. The lower turntable 2 rotates under the control of the motor 21, and the lower turntable 2 drives the upper turntable 6 to rotate through the center rod 25;

[0050] S2: When the pipe 99 approaches the detection position 41, the protective sleeve 7 rotates and moves downward and moves out of the corresponding protective groove 61. The upper contact block 75 enters the outside of the pipe 99 after the upper contact groove 74 exposes the corresponding protective groove 61. The pipe 99 is covered by the protective sleeve 7. The upper contact block 75 performs a spiral motion on the outer wall of the pipe 99, and the upper pressure sensor 77 collects data; the lower detection column 3 extends out of the lower detection groove 22 after the corresponding protective sleeve 7 extends out of the protective groove 61, and the lower detection rotates and moves upward and moves out of the corresponding lower detection groove 22. The lower contact block 32 enters the inner side of the pipe 99 after the lower contact groove 31 exposes the corresponding lower detection groove 22. The lower contact block 32 performs a spiral motion inside the pipe 99, and the lower pressure sensor 33 collects data;

[0051] S3: When the pipe 99 approaches the material changing position 42, the protective sleeve 7 retracts to the corresponding protective groove 61, the upper contact block 75 retracts to the corresponding upper contact groove 74, the lower detection column 3 retracts to the lower detection groove 22, and the lower contact block 32 retracts to the lower contact groove 31. After the pipe 99 moves to the material changing position 42, a new round of material changing is performed;

[0052] S4: The control system converts the data of the upper pressure sensor 77 and the lower pressure sensor 33 to obtain the data of the inner and outer diameters, the concentricity and the cylindricity, and completes the detection process of the pipe 99.

[0053] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for detecting automobile pipe fittings, comprising a base (1); characterized in that: A lower rotating groove (11) is arranged at the center of the upper surface of the base (1); the lower rotating groove (11) is rotatably connected to the lower rotating disk (2); the lower surface of the lower rotating disk (2) and the bottom of the lower rotating groove (11) are connected via a motor (21); lower detection grooves (22) are evenly arranged around the center of the upper surface of the lower rotating disk (2); the lower detection column (3) is movably connected up and down in the lower detection groove (22); the outer wall of the lower detection column (3) is evenly arranged with lower contact grooves (31); the lower contact grooves (31) are movably connected in the lower detection grooves (22); The lower contact groove (31) is dynamically connected to a lower contact block (32); a lower pressure sensor (33) is arranged at the bottom of the lower contact groove (31); the lower contact block (32) and the lower pressure sensor (33) are connected via a lower spring (34); the end of the lower contact block (32) away from the corresponding lower spring (34) is conical; the lower surface of the lower detection column (3) is connected to a lower rod (35); the lower end of the lower rod (35) passes through the lower rotating disk (2) downward and abuts against the lower ring seat (4); the upper surface of the lower ring seat (4) is inclined; The detection position (41) is located above the highest point of the upper surface of the lower ring seat (4); the material change position (42) is located above the lowest point of the upper surface of the lower ring seat (4); a lower ring groove (43) is provided on the upper surface of the lower ring seat (4); a lower block (44) is movably connected in the lower ring groove (43); the lower block (44) is fixedly connected to the corresponding lower rod (35) at the lower end; the axial length of the lower detection column (3) is smaller than the axial length of the lower detection groove (22); The upper end of the lower rod (35) is rotatably connected to the center of the lower surface of the lower detection column (3); the inner wall of the lower detection groove (22) is provided with a lower spiral groove (23); the lower spiral groove (23) is movably connected to the lower groove block (24); the lower groove block (24) is fixedly connected to the lower position of the outer wall of the lower detection column (3); The top of the base (1) is fixedly connected to the top seat (5) through a support plate (12); an upper rotating groove (51) is arranged at the center of the lower surface of the top seat (5); an upper rotating disc (6) is rotatably connected in the upper rotating groove (51); an annular protective groove (61) is evenly arranged around the center of the lower surface of the upper rotating disc (6); the protective groove (61) is located directly above the corresponding lower detection groove (22); an annular protective sleeve (7) is movably connected in the protective groove (61); the upper end of the protective sleeve (7) is connected to an upper rod (71); the upper end of the upper rod (71) is connected to the upper One end passes through the upper turntable (6) and is fixedly connected to the upper block (72); the center of the lower turntable (2) is fixedly connected to the center of the upper turntable (6) through a center rod (25); the bottom of the upper turntable groove (51) is fixedly connected to the upper ring seat (8); the lower surface of the upper ring seat (8) is inclined; the highest point of the lower surface of the upper ring seat (8) is located directly above the material replacement position (42), and the lowest point of the lower surface of the upper ring seat (8) is located directly above the detection position (41); the lower surface of the upper ring seat (8) is provided with an upper ring groove (81); and the upper block (72) is movably connected in the upper ring groove (81).

2. The automobile pipe fitting detection device according to claim 1, characterized in that: An annular guide surface (73) is provided at a lower position of the inner wall of the protective sleeve (7); the guide surface (73) is inclined toward the inner side of the protective sleeve (7); and the guide surface (73) guides the pipe (99) during the downward movement of the protective sleeve (7).

3. The automobile pipe fitting detection device according to claim 1, characterized in that: The axial length of the protective sleeve (7) is smaller than the axial length of the protective groove (61); the inclination degree of the lower surface of the upper ring seat (8) is greater than the inclination degree of the upper surface of the lower ring seat (4); and the lower detection column (3) extends out of the lower detection groove (22) after the protective sleeve (7) extends out of the protective groove (61).

4. The automobile pipe fitting detection device according to claim 1, characterized in that: The inner wall of the protective sleeve (7) is evenly provided with upper contact grooves (74) around the center of the protective sleeve (7); the upper contact block (75) is movably connected in the upper contact groove (74); the upper contact block (75) is connected to the bottom of the upper contact groove (74) via an upper spring (76); and the end of the upper contact block (75) away from the corresponding upper spring (76) is tapered.

5. The automobile pipe fitting detection device according to claim 4, characterized in that: An upper pressure sensor (77) is provided at the bottom of the upper contact groove (74); one end of the upper spring (76) is connected to the upper contact block (75), and the other end is connected to the upper pressure sensor (77).

6. The automobile pipe fitting detection device according to claim 5, characterized in that: The protective groove (61) is provided with an upper spiral groove (62) on the outer groove wall; the upper spiral groove (62) and the lower spiral groove (23) have opposite spiral directions; the upper spiral groove (62) is movably connected to an upper groove block (63); the upper groove block (63) is fixedly connected to the upper position of the outer wall of the protective sleeve (7); the upper surface of the protective sleeve (7) is provided with an annular groove (78); the upper rod (71) is movably connected to the annular groove (78) on the lower end.

7. A method for detecting automobile tubular accessories, the method being applicable to the automobile tubular accessories detection device according to any one of claims 1 to 6, characterized in that: The steps of this method are as follows: S1: The inspector removes the inspected pipe (99) around the material replacement position (42) and replaces it with a new pipe (99) to be inspected. The lower turntable (2) rotates under the control of the motor (21). The lower turntable (2) drives the upper turntable (6) to rotate through the center rod (25); S2: When the pipe (99) approaches the detection position (41), the protective sleeve (7) rotates and moves downward and moves out of the corresponding protection groove (61), and the upper contact block (75) enters the outer side of the pipe (99) after the upper contact groove (74) exposes the corresponding protection groove (61), and the pipe (99) is covered by the protective sleeve (7). The upper contact block (75) performs a spiral movement on the outer wall of the pipe (99), and the upper pressure sensor (77) collects data; the lower detection column (3) extends out of the lower detection groove (22) after the corresponding protective sleeve (7) extends out of the protection groove (61), and the lower detection rotates and moves upward and moves out of the corresponding lower detection groove (22), and the lower contact block (32) enters the inner side of the pipe (99) after the lower contact groove (31) exposes the corresponding lower detection groove (22), and the lower contact block (32) performs a spiral movement on the inner side of the pipe (99), and the lower pressure sensor (33) collects data; S3: When the pipe (99) approaches the material replacement position (42), the protective sleeve (7) retracts into the corresponding protective groove (61), the upper contact block (75) retracts into the corresponding upper contact groove (74), the lower detection column (3) retracts into the lower detection groove (22), and the lower contact block (32) retracts into the lower contact groove (31), and the pipe (99) performs a new round of material replacement after moving to the material replacement position (42); S4: The control system converts the data from the upper pressure sensor (77) and the lower pressure sensor (33) to obtain the data of the inner and outer diameters, the concentricity and the cylindricity, and completes the detection process of the pipe (99).

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