Detection mechanism integrating profile tolerance detection and position tolerance detection

Abstract

The utility model discloses a detection mechanism integrating profile tolerance and position tolerance detection, which comprises a mounting support box, a main body positioning unit is mounted in the middle of the upper end surface of the mounting support box, and a rear assembly surface detection unit is mounted behind the main body positioning unit. A welding flange detection unit is mounted on the outer side of the rear assembly surface detection unit; the rear assembly surface detection unit comprises a second mounting base, the bottom end of the second mounting base is fixedly connected with the mounting supporting box, a second air cylinder is fixedly mounted at the upper end of the second mounting base, and a linear pneumatic guide rail is fixedly mounted at the output end of the second air cylinder; a second displacement sensor is fixedly installed at the rear end of the linear pneumatic guide rail, and a first connecting base is fixedly installed on the upper end face of the linear pneumatic guide rail. According to the utility model, through automatic positioning and detection of the automobile exhaust pipe, high-precision rapid detection operation of profile tolerance and position tolerance is realized, and the detection efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of exhaust pipe detection technology, specifically a detection mechanism that integrates contour and position detection. Background Technology

[0002] The automotive exhaust pipe is part of the engine's exhaust system. The exhaust system mainly includes the exhaust manifold, exhaust pipe, and muffler. A three-way catalytic converter, typically used to control engine pollutant emissions, is also installed in the exhaust system. The exhaust pipe usually employs a double-walled corrugated structure, externally wrapped with a wire mesh, and equipped with straight edges and retaining rings at both ends for stable support. The corrugated pipe may be equipped with expansion joints or a mesh sleeve inside to enhance the system's flexibility and efficiency. During the automotive production and assembly process, various parameters of the exhaust pipe need to be tested.

[0003] Existing methods typically involve manual inspection of the contour and position of automotive exhaust pipes, which is inefficient, lacks accuracy, and fails to adequately control the quality of exhaust pipe inspections. Therefore, this approach does not meet current requirements. To address this, we propose an integrated contour and position inspection mechanism. Utility Model Content

[0004] The purpose of this invention is to provide a detection mechanism that integrates contour and position detection, in order to solve the problem mentioned in the background art that the existing methods of manually detecting the contour and position of automobile exhaust pipes are inefficient, cannot guarantee detection accuracy, and thus facilitate the control of the detection quality of exhaust pipes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a detection mechanism integrating contour and position detection, comprising a mounting support box, a main positioning unit installed in the middle of the upper surface of the mounting support box, a rear assembly surface detection unit installed behind the main positioning unit, and a welding flange detection unit installed on the outer side of the rear assembly surface detection unit.

[0006] The rear assembly surface inspection unit includes a second mounting base. The bottom end of the second mounting base is fixedly connected to the mounting support box. A second cylinder is fixedly mounted on the upper end of the second mounting base. A linear pneumatic guide rail is fixedly mounted on the output end of the second cylinder. A second displacement sensor is fixedly mounted on the rear end of the linear pneumatic guide rail. A first connecting seat is fixedly mounted on the upper end face of the linear pneumatic guide rail. The second displacement sensor is slidably connected to the first connecting seat. An assembly contour detection plate is fixedly mounted on the upper end face of the first connecting seat. A detection pin is slidably connected to the inner side of the assembly contour detection plate. The rear end of the detection pin passes through the assembly contour detection plate and is connected to the first connecting seat by a spring.

[0007] Preferably, a left oxygen sensor detection unit is installed on the left side of the main positioning unit, and a right oxygen sensor detection unit is installed on the right side of the main positioning unit. Both the left and right oxygen sensor detection units include a first mounting base. The bottom ends of the two first mounting bases are fixedly connected to the mounting support box. A first displacement sensor is fixedly installed on the upper end of the first mounting base. A detection shaft is slidably connected to one side of the first displacement sensor. The detection shaft is slidably connected to the first mounting base. A fifth cylinder is fixedly installed at one end of the detection shaft. The fifth cylinder is fixedly connected to the first mounting base. A zeroing pin is installed between the detection shaft and the output end of the fifth cylinder. A contour detection block is slidably installed at the other end of the detection shaft. A spring is provided between the contour detection block and the detection shaft.

[0008] Preferably, the welding flange detection unit includes a third mounting base, the bottom end of which is fixedly connected to a mounting support box. A third cylinder is fixedly mounted on the upper end of the third mounting base, a fourth cylinder is fixedly mounted on the output end of the third cylinder, and a second connecting base is fixedly mounted on the output end of the fourth cylinder. A third displacement sensor is fixedly mounted on the upper surface of the second connecting base. A mounting hole detection rod is mounted in front of the third displacement sensor. Two welding flange contour detection rods are mounted on one side of the mounting hole detection rod. The welding flange contour detection rods are slidably connected to the second connecting base by springs, and the mounting hole detection rods are fixedly connected to the second connecting base.

[0009] Preferably, an exhaust pipe is provided at the upper end of the main positioning unit, and a flange flatness detection unit is installed on the inner side of the main positioning unit. The flange flatness detection unit is used to detect the installation flatness of the main flange of the exhaust pipe. A bellows flange position detection unit is installed on the left side of the left oxygen sensor detection unit. The bellows flange position detection unit is used to detect the position of the bellows flange mounting hole of the exhaust pipe.

[0010] Preferably, a bellows flange positioning frame is installed behind the left oxygen sensor detection unit, a bellows flatness detection unit is installed on the left side of the bellows flange position detection unit, the bellows flatness detection unit is used to detect the flatness of the bellows flange of the exhaust pipe, and an auxiliary support unit is installed between the main positioning unit and the rear assembly surface detection unit, the auxiliary support unit is used to provide auxiliary support during exhaust pipe installation.

[0011] Preferably, the main positioning unit includes a support frame, a calibration block is fixedly installed in the middle of the upper surface of the support frame, a pressure claw is rotatably connected to the upper end of the support frame, the bottom end of the exhaust pipe is fixedly connected to the support frame through multiple pressure claws, multiple positioning pins are provided on the upper surface of the support frame, and two main flange mounting block position detection units are installed on the inner side of the support frame.

[0012] Preferably, the main flange mounting block position detection unit includes a cylinder mounting bracket, the support bracket is fixedly connected to two cylinder mounting brackets, a first cylinder is fixedly mounted at the bottom end of the cylinder mounting bracket, a first detection pin is fixedly mounted at the output end of the first cylinder, and the upper end of the first detection pin passes through the cylinder mounting bracket and the support bracket and is in contact with the bottom end of the exhaust pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses a detection shaft and a contour detection block to slide linearly relative to a first displacement sensor. The first displacement sensor can monitor the displacement of the detection shaft. At the same time, the detection shaft is elastically supported by a spring for the contour detection block, which facilitates the two contour detection blocks to detect the positions of the left and right oxygen sensors of the exhaust pipe. The two detection pins contact the rear assembly surface of the exhaust pipe, and the displacement of the detection pins is monitored by a second displacement sensor to detect the position of the detection pins on the rear assembly surface of the exhaust pipe. At the same time, the surface assembly contour of the exhaust pipe can be detected by the assembly contour detection plate.

[0015] 2. This utility model can detect the profile of the mounting hole and the welded flange of the exhaust pipe by using the mounting hole detection rod and the welded flange profile detection rod respectively. The profile and position parameters of the exhaust pipe are detected by the left oxygen sensor detection unit, the rear assembly surface detection unit, the welded flange detection unit and the right oxygen sensor detection unit, which effectively improves the detection efficiency and accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the positioning of the exhaust pipe of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the left oxygen sensor detection unit of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the rear assembly surface detection unit of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the welding flange inspection unit of this utility model;

[0021] Figure 6 This is an exploded structural diagram of the main positioning unit of this utility model.

[0022] In the diagram: 1. Main positioning unit; 2. Flange flatness detection unit; 3. Left oxygen sensor detection unit; 301. First mounting base; 302. Fifth cylinder; 303. Contour detection block; 304. Detection shaft; 305. First displacement sensor; 306. Zeroing pin; 4. Bellows flange positioning frame; 5. Bellows flatness detection unit; 6. Bellows flange position detection unit; 7. Auxiliary support unit; 8. Rear assembly surface detection unit; 801. Second mounting base; 802. 803. Inspection pin; 804. Assembly contour inspection plate; 805. First connecting seat; 806. Linear pneumatic guide rail; 807. Second cylinder; 808. Second displacement sensor; 9. Welded flange inspection unit; 901. Third mounting seat; 902. Mounting hole inspection rod; 903. Welded flange contour inspection rod; 904. Third cylinder; 905. Fourth cylinder; 906. Second connecting seat; 907. Third displacement sensor; 10. Right oxygen sensor inspection unit; 11. Mounting support box. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1 and Figure 6 This utility model provides an embodiment of a detection mechanism integrating contour and position detection, including a mounting support box 11. A main positioning unit 1 is installed in the middle of the upper surface of the mounting support box 11. The main positioning unit 1 includes a support frame 101. A calibration block 105 is fixedly installed in the middle of the upper surface of the support frame 101. A pressure claw 103 is rotatably connected to the upper end of the support frame 101. The bottom end of the exhaust pipe is fixedly connected to the support frame 101 through multiple pressure claws 103. Multiple positioning pins 102 are provided on the upper surface of the support frame 101. The main positioning unit 1 realizes the positioning calibration and fixed clamping of the exhaust pipe.

[0025] Please see Figure 6 Two main flange mounting block position detection units 104 are installed on the inner side of the support frame 101. The main flange mounting block position detection unit 104 includes a cylinder mounting bracket 108. The support frame 101 is fixedly connected to the two cylinder mounting brackets 108. A first cylinder 107 is fixedly installed at the bottom end of the cylinder mounting bracket 108. A first detection pin 106 is fixedly installed at the output end of the first cylinder 107. The upper end of the first detection pin 106 passes through the cylinder mounting bracket 108 and the support frame 101 and is in contact with the bottom end of the exhaust pipe. The position of the detection hole of the exhaust pipe is detected by the main flange mounting block position detection unit 104.

[0026] Please see Figure 1 and Figure 4 A rear assembly surface detection unit 8 is installed behind the main positioning unit 1. The rear assembly surface detection unit 8 includes a second mounting base 801. The bottom end of the second mounting base 801 is fixedly connected to the mounting support box 11. A second cylinder 806 is fixedly installed at the upper end of the second mounting base 801. A linear pneumatic guide rail 805 is fixedly installed at the output end of the second cylinder 806. A second displacement sensor 807 is fixedly installed at the rear end of the linear pneumatic guide rail 805. A first connecting seat 804 is fixedly installed on the upper end face of the linear pneumatic guide rail 805. The two displacement sensors 807 are slidably connected to the first connecting seat 804. An assembly contour detection plate 803 is fixedly installed on the upper end surface of the first connecting seat 804. A detection pin 802 is slidably connected to the inner side of the assembly contour detection plate 803. The rear end of the detection pin 802 passes through the assembly contour detection plate 803 and is connected to the first connecting seat 804 by a spring. This enables the detection pin 802 to detect the position of the rear assembly surface of the exhaust pipe, and at the same time, the assembly contour detection plate 803 can detect the surface assembly contour of the exhaust pipe.

[0027] Please see Figures 1 to 3 An exhaust pipe is installed at the upper end of the main positioning unit 1. A flange flatness detection unit 2 is installed inside the main positioning unit 1. The flange flatness detection unit 2 is used to detect the flatness of the main flange of the exhaust pipe. A bellows flange position detection unit 6 is installed on the left side of the left oxygen sensor detection unit 3. The bellows flange position detection unit 6 is used to detect the position of the bellows flange mounting hole of the exhaust pipe. A bellows flange positioning frame 4 is installed behind the left oxygen sensor detection unit 3. A bellows flatness detection unit 5 is installed on the left side of the bellows flange position detection unit 6. The bellows flatness detection unit 5 is used to detect the flatness of the bellows flange of the exhaust pipe. An auxiliary support unit 7 is installed between the main positioning unit 1 and the rear assembly surface detection unit 8. The auxiliary support unit 7 is used to provide auxiliary support during the installation of the exhaust pipe.

[0028] Please see Figure 1 and Figure 3A left oxygen sensor detection unit 3 is installed on the left side of the main positioning unit 1, and a right oxygen sensor detection unit 10 is installed on the right side of the main positioning unit 1. Both the left oxygen sensor detection unit 3 and the right oxygen sensor detection unit 10 include a first mounting base 301. The bottom ends of the two first mounting bases 301 are fixedly connected to the mounting support box 11. A first displacement sensor 305 is fixedly installed on the upper end of the first mounting base 301. A detection shaft 304 is slidably connected to one side of the first displacement sensor 305. The detection shaft 304 is slidably connected to the first mounting base 301. A fifth cylinder 302 is fixedly installed on one end of the detection shaft 304. The fifth cylinder 302 is fixedly connected to the first mounting base 301. A zeroing pin 306 is installed between the detection shaft 304 and the output end of the fifth cylinder 302. A contour detection block 303 is slidably installed on the other end of the detection shaft 304. A spring is provided between the contour detection block 303 and the detection shaft 304. The two contour detection blocks 303 detect the positions of the left and right oxygen sensors of the exhaust pipe.

[0029] Please see Figure 1 and Figure 5 A welding flange detection unit 9 is installed on the outer side of the rear assembly surface detection unit 8. The welding flange detection unit 9 includes a third mounting base 901. The bottom end of the third mounting base 901 is fixedly connected to the mounting support box 11. A third cylinder 904 is fixedly installed on the upper end of the third mounting base 901. A fourth cylinder 905 is fixedly installed on the output end of the third cylinder 904. A second connecting base 906 is fixedly installed on the output end of the fourth cylinder 905. A third displacement sensor 907 is fixedly installed on the upper surface of the second connecting base 906. A mounting hole detection rod 902 is installed in front of the third displacement sensor 907. Two welding flange contour detection rods 903 are installed on one side of the mounting hole detection rod 902. The welding flange contour detection rods 903 and the second connecting base 906 are slidably connected by a spring. The mounting hole detection rods 902 and the second connecting base 906 are fixedly connected. The second connecting base 906 drives the mounting hole detection rods 902 and the welding flange contour detection rods 903 to detect the contour of the mounting hole of the exhaust pipe and the welding flange, respectively.

[0030] In summary, when testing the contour and position parameters of the automobile exhaust pipe, the exhaust pipe is manually placed on the main positioning unit 1 for positioning calibration and fixed clamping. The bellows flange positioning bracket 4 facilitates the positioning of the bellows flange of the exhaust pipe. The left oxygen sensor detection unit 3 and the right oxygen sensor detection unit 10 are installed on both sides of the exhaust pipe, so that the fifth cylinder 302, under the support of the first mounting base 301, drives the detection shaft 304 and the contour detection block 303 to slide linearly relative to the first displacement sensor 305. The displacement of the detection shaft 304 can be monitored by the first displacement sensor 305. At the same time, the detection shaft 304 is elastically supported by the contour detection block 303 by the spring, which facilitates the two contour detection blocks 303 to detect the positions of the left and right oxygen sensors of the exhaust pipe.

[0031] The second cylinder 806, supported by the second mounting base 801, drives the first connecting base 804 to slide horizontally. The first connecting base 804 then slides relative to the second mounting base 801 via the linear pneumatic guide rail 805 and simultaneously drives the two detection pins 802 to contact the rear assembly surface of the exhaust pipe. The displacement of the detection pins 802 is monitored by the second displacement sensor 807 to detect the position of the detection pins 802 on the rear assembly surface of the exhaust pipe. At the same time, the surface assembly contour of the exhaust pipe can be detected by the assembly contour detection plate 803.

[0032] The second connecting seat 906 can be adjusted in two directions by the third cylinder 904 and the fourth cylinder 905. Then, the second connecting seat 906 drives the mounting hole detection rod 902 and the welding flange contour detection rod 903 to detect the contour of the mounting hole of the exhaust pipe and the welding flange, respectively. After the exhaust pipe is positioned, fixed and supported by the main positioning unit 1, the bellows flange positioning frame 4 and the auxiliary support unit 7, the contour and position parameters of the exhaust pipe are detected by the left oxygen sensor detection unit 3, the rear assembly surface detection unit 8, the welding flange detection unit 9 and the right oxygen sensor detection unit 10, which effectively improves the detection efficiency and accuracy.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A detection mechanism integrating contour and position detection, comprising a mounting support box (11), characterized in that: A main positioning unit (1) is installed in the middle of the upper surface of the mounting support box (11), a rear assembly surface detection unit (8) is installed behind the main positioning unit (1), and a welding flange detection unit (9) is installed on the outside of the rear assembly surface detection unit (8). The rear assembly surface detection unit (8) includes a second mounting base (801), the bottom end of which is fixedly connected to the mounting support box (11), a second cylinder (806) is fixedly mounted on the upper end of the second mounting base (801), a linear pneumatic guide rail (805) is fixedly mounted on the output end of the second cylinder (806), a second displacement sensor (807) is fixedly mounted on the rear end of the linear pneumatic guide rail (805), a first connecting seat (804) is fixedly mounted on the upper end surface of the linear pneumatic guide rail (805), the second displacement sensor (807) is slidably connected to the first connecting seat (804), an assembly contour detection plate (803) is fixedly mounted on the upper end surface of the first connecting seat (804), a detection pin (802) is slidably connected to the inner side of the assembly contour detection plate (803), and the rear end of the detection pin (802) passes through the assembly contour detection plate (803) and is connected to the first connecting seat (804) by a spring.

2. The detection mechanism integrating contour and position detection according to claim 1, characterized in that: A left oxygen sensor detection unit (3) is installed on the left side of the main positioning unit (1), and a right oxygen sensor detection unit (10) is installed on the right side of the main positioning unit (1). Both the left oxygen sensor detection unit (3) and the right oxygen sensor detection unit (10) include a first mounting base (301). The bottom ends of the two first mounting bases (301) are fixedly connected to the mounting support box (11). A first displacement sensor (305) is fixedly installed on the upper end of the first mounting base (301). One side of the first displacement sensor (305) is slidably connected to... A detection shaft (304) is slidably connected to a first mounting base (301). A fifth cylinder (302) is fixedly installed at one end of the detection shaft (304). The fifth cylinder (302) is fixedly connected to the first mounting base (301). A zeroing pin (306) is installed between the detection shaft (304) and the output end of the fifth cylinder (302). A contour detection block (303) is slidably installed at the other end of the detection shaft (304). A spring is provided between the contour detection block (303) and the detection shaft (304).

3. The detection mechanism integrating contour and position detection according to claim 2, characterized in that: The welding flange detection unit (9) includes a third mounting base (901), the bottom end of which is fixedly connected to the mounting support box (11). A third cylinder (904) is fixedly mounted on the upper end of the third mounting base (901). A fourth cylinder (905) is fixedly mounted on the output end of the third cylinder (904). A second connecting base (906) is fixedly mounted on the output end of the fourth cylinder (905). A third displacement sensor (907) is fixedly mounted on the upper surface of the second connecting base (906). A mounting hole detection rod (902) is mounted in front of the third displacement sensor (907). Two welding flange contour detection rods (903) are mounted on one side of the mounting hole detection rod (902). The welding flange contour detection rod (903) and the second connecting base (906) are slidably connected by a spring. The mounting hole detection rod (902) and the second connecting base (906) are fixedly connected.

4. The detection mechanism integrating contour and position detection according to claim 3, characterized in that: An exhaust pipe is provided at the upper end of the main positioning unit (1). A flange flatness detection unit (2) is installed on the inner side of the main positioning unit (1). The flange flatness detection unit (2) is used to detect the flatness of the main flange of the exhaust pipe. A bellows flange position detection unit (6) is installed on the left side of the left oxygen sensor detection unit (3). The bellows flange position detection unit (6) is used to detect the position of the bellows flange mounting hole of the exhaust pipe.

5. The detection mechanism integrating contour and position detection according to claim 4, characterized in that: A bellows flange positioning frame (4) is installed behind the left oxygen sensor detection unit (3). A bellows flatness detection unit (5) is installed on the left side of the bellows flange position detection unit (6). The bellows flatness detection unit (5) is used to detect the flatness of the bellows flange of the exhaust pipe. An auxiliary support unit (7) is installed between the main positioning unit (1) and the rear assembly surface detection unit (8). The auxiliary support unit (7) is used to provide auxiliary support during the installation of the exhaust pipe.

6. The detection mechanism integrating contour and position detection according to claim 5, characterized in that: The main positioning unit (1) includes a support frame (101), a calibration block (105) is fixedly installed in the middle of the upper surface of the support frame (101), a pressure claw (103) is rotatably connected to the upper end of the support frame (101), the bottom end of the exhaust pipe is fixedly connected to the support frame (101) through multiple pressure claws (103), multiple positioning pins (102) are provided on the upper surface of the support frame (101), and two main flange mounting block position detection units (104) are installed on the inner side of the support frame (101).

7. The detection mechanism integrating contour and position detection according to claim 6, characterized in that: The main flange mounting block position detection unit (104) includes a cylinder mounting bracket (108). The support bracket (101) is fixedly connected to two cylinder mounting brackets (108). A first cylinder (107) is fixedly installed at the bottom end of the cylinder mounting bracket (108). A first detection pin (106) is fixedly installed at the output end of the first cylinder (107). The upper end of the first detection pin (106) passes through the cylinder mounting bracket (108) and the support bracket (101) and is in contact with the bottom end of the exhaust pipe.

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