Exhaust pipe air tightness fully automatic detection device

Abstract

The utility model discloses a fully automatic exhaust pipe air tightness detection device, including a frame and a bearing box fixed thereon for accommodating a medium, a bearing plate is provided on the frame, an air tightness detection unit for detecting the air tightness of the exhaust pipe is provided on the bearing plate, the air tightness detection unit includes a positioning component provided on the bearing plate for positioning the exhaust pipe and a sealing component for blocking the through hole on the exhaust pipe, the sealing component is connected to an external air source; a monitoring unit for monitoring the leakage point of the exhaust pipe is also integrated on the bearing plate, the monitoring unit can drive the air tightness detection unit to be completely immersed in the medium of the bearing box, the monitoring unit includes a driving component for driving the bearing plate to move downward and a flipping component for driving the bearing plate to flip. The beneficial effects of the utility model are mainly reflected in: the design is exquisite, the device realizes fully automatic air tightness detection, the structure is compact, the layout is reasonable, the operation is simple and convenient, and the work efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, and in particular to a fully automatic detection device for the air tightness of an exhaust pipe. Background Art

[0002] The exhaust pipe is a part of the engine exhaust system. The exhaust system mainly includes the exhaust manifold, exhaust pipe and muffler. Generally, the three-school catalytic converter for controlling the engine pollutant emission is also installed in the exhaust system. The exhaust pipe generally includes the front exhaust pipe and the rear exhaust pipe. The automobile exhaust bellows is also called the automobile exhaust pipe hose. It is installed in the exhaust pipe between the engine exhaust branch pipe and the muffler, so that the whole exhaust system is flexibly connected, thereby playing a role in vibration reduction and noise reduction, facilitating installation and extending the life of the exhaust muffler system. It is mainly used in light vehicles, micro vehicles and buses. Its structure is a double-layer corrugated pipe covered with a steel wire mesh sleeve, and the straight edge sections at both ends are covered with a retaining ring. In order to make the muffler effect better, the bellows can be equipped with an expansion joint or a mesh sleeve. The air tightness test is mainly to check whether there is leakage at the various connecting parts of the container.

[0003] For example, the authorization announcement number CN218916724U discloses an exhaust pipe air tightness detection device, which relates to the field of air tightness technology, including a workbench, on which the upper end surface of the workbench is placed the main body of the automobile exhaust pipe to be tested, and both ends of the main body of the automobile exhaust pipe to be tested are provided with second holes to be tested, and the automobile exhaust pipe air tightness detection device, the main body of the automobile exhaust pipe to be tested and the exhaust main pipe can respectively seal the exhaust branch pipe, the first hole to be tested and the second hole to be tested through the action of the first sealing component, the second sealing component and the third sealing component, so as to inflate the main body of the automobile exhaust pipe to be tested and the two exhaust main pipes, and then detect the air tightness of the main body of the automobile exhaust pipe to be tested and the exhaust main pipe. However, the above is to judge its sealing performance by means of pressure drop. When the welding is not firm and pressure drop occurs, it is necessary to detect the leakage position and repair it to ensure the yield rate. At present, when pressure drop occurs, it is usually manually carried to a water tank and immersed in the water tank to find the leak. Manual transportation is time-consuming and labor-intensive, with high work intensity and low efficiency, which is not conducive to mass production and has great limitations. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a fully automatic detection device for the air tightness of an exhaust pipe.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] An exhaust pipe air tightness fully automatic detection device comprises a frame and a carrying box fixed thereon for accommodating a medium, the frame is provided with a carrying plate, the carrying plate is provided with an air tightness detection part for detecting the air tightness of the exhaust pipe, the air tightness detection part comprises a positioning component provided on the carrying plate for positioning the exhaust pipe and a sealing component for blocking a through hole on the exhaust pipe, the sealing component is connected to an external air source;

[0007] The supporting plate also integrates a monitoring unit for monitoring leakage points of the exhaust pipe, and the monitoring unit can drive the airtightness detection unit to be completely immersed in the medium of the supporting box. The monitoring unit includes a driving component for driving the supporting plate to move downward and a flipping component for driving the supporting plate to flip.

[0008] Preferably, the positioning assembly at least comprises a bearing block fixed on the bearing plate, the bearing block is provided with a bearing groove, the bearing groove is semicircular, and its maximum diameter is equal to the diameter of the corresponding position of the exhaust pipe.

[0009] Preferably, the positioning assembly also includes a carrier frame fixed on the carrier plate, a lower positioning block is fixed on the carrier frame, and a positioning groove is opened on the lower positioning block; one side of the carrier frame is provided with an L-shaped fixing block fixed on the carrier plate, one end of the fixing block is pivotally connected to the positioning cylinder, and the other end is pivotally connected to the Z-shaped pushing plate, one end of the pushing plate is pivotally connected to the cylinder axis of the positioning cylinder, and the other end is fixed with an upper positioning block, the upper positioning block can be fitted with the lower positioning block to confine the exhaust pipe within the positioning groove.

[0010] Preferably, an elastic pad is provided between the lower positioning block and the supporting frame.

[0011] Preferably, the sealing assembly at least comprises a sealing plate fixed on the supporting plate, a sealing cylinder is fixed on the sealing plate, a sealing plug is fixed on the cylinder shaft of the sealing cylinder, and the sealing plug is matched with the through hole on the exhaust pipe.

[0012] Preferably, the sealing assembly further comprises a rotating cylinder arranged on the sealing plate, and a rotating plate is fixedly arranged on the cylinder shaft of the rotating cylinder.

[0013] Preferably, the driving assembly comprises a guide rail fixedly mounted on the frame, the guide rail is provided with a guide block matched therewith, the guide block is fixedly mounted with a transfer rack, and the carrying plate is fixedly mounted on the transfer rack.

[0014] Preferably, a driving cylinder is fixedly provided on the frame, and the transfer rack is fixedly provided on the cylinder shaft of the driving cylinder.

[0015] Preferably, the flipping assembly includes at least pivot seats arranged on both sides of the supporting plate, wherein a driven sprocket is fixedly provided on the pivot seat on one side, a driving motor is fixedly provided on the transfer frame, a driving sprocket is fixedly provided on the motor shaft of the driving motor, and the driving sprocket and the driven sprocket are connected by a chain transmission.

[0016] The beneficial effects of the utility model are mainly reflected in:

[0017] 1. With exquisite design, the device can realize fully automatic air tightness detection, compact structure, reasonable layout, simple and convenient operation, greatly improving work efficiency and reducing space occupation. In addition, when pressure drop occurs, it can be directly immersed in the bearing box to detect the leakage point, reducing manual handling steps and reducing work intensity. At the same time, the device is highly integrated, reduces space occupation, facilitates reasonable layout, and has a wide range of applicability;

[0018] 2. The carrier plate can be turned over to inspect both sides of the exhaust pipe to avoid misjudgment, improve the accuracy of detection, and thus improve the yield rate;

[0019] 3. The positioning cylinder can drive the upper positioning block to move downward and fit with the lower positioning block through the push plate, thereby limiting the position of the exhaust pipe. This can prevent the displacement or movement of the pipe under the action of air pressure during air tightness testing, affecting the accuracy of measurement and improving the yield rate;

[0020] 4. The setting of the elastic pad can avoid the damage of the exhaust pipe caused by the hard contact between the upper positioning block and the lower positioning block, further improve the yield rate, and has a wide applicability;

[0021] 5. The sealing plug on each sealing component is matched with the through hole on the exhaust pipe, so as to completely seal the exhaust pipe, thereby avoiding the pressure drop caused by misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0023] Figure 1 : A three-dimensional diagram of an exhaust pipe in a preferred embodiment of the utility model;

[0024] Figure 2 : A three-dimensional diagram of a preferred embodiment of the utility model;

[0025] Figure 3 : A three-dimensional diagram of a preferred embodiment of the utility model, in which the carrying box is removed;

[0026] Figure 4 : Figure 3 A magnified view of part A;

[0027] Figure 5 : A three-dimensional diagram of the positioning assembly in the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0030] like Figures 1 to 5 As shown, the utility model discloses a fully automatic detection device for air tightness of an exhaust pipe, comprising a frame 1 and a carrying box 2 fixed thereon for accommodating a medium, the frame 1 is provided with a carrying plate 3 which can be moved into the carrying box 2, the frame 1 is provided with a carrying plate 3, the carrying plate 3 is provided with an air tightness detection part for air tightness detection of the exhaust pipe 100, the air tightness detection part comprises a positioning component 4 arranged on the carrying plate 3 for positioning the exhaust pipe 100 and a sealing component 5 for blocking the through hole 101 on the exhaust pipe 100, and the sealing component 5 is connected to an external air source.

[0031] The carrier plate 3 is provided with a positioning assembly 4 for positioning the exhaust pipe 100. The positioning assembly 4 at least includes a carrier block 41 fixed on the carrier plate 3. The carrier block 41 is provided with a bearing groove 42. The bearing groove 42 is semicircular, and its maximum diameter is equal to the diameter of the corresponding position of the exhaust pipe 100. In this preferred embodiment, the exhaust pipe 100 falls on the bearing groove 42 of the bearing block 41, so as to realize the positioning of the exhaust pipe 100, and play a bearing and positioning role. Of course, positioning assemblies of other structures can also be used, all of which belong to the protection scope of the utility model, and the utility model does not make too many restrictions on its structure here.

[0032] The positioning assembly 4 also includes a carrier frame 43 fixed on the carrier plate 3, a lower positioning block 44 is fixed on the carrier frame 43, and a positioning groove 45 is formed on the lower positioning block 44; an L-shaped fixing block 46 fixed on the carrier plate 3 is provided on one side of the carrier frame 43, one end of the fixing block 46 is pivotally connected to the positioning cylinder 47, and the other end is pivotally connected to the Z-shaped pushing plate 48, one end of the pushing plate 48 is pivotally connected to the cylinder shaft of the positioning cylinder 47, and the other end is fixed with an upper positioning block 49, the upper positioning block 49 can be fitted with the lower positioning block 44, and the pipe 102 of the exhaust pipe 100 is limited in the positioning groove 45. The positioning cylinder 47 can drive the upper positioning block 49 to move downward and fit with the lower positioning block 44 through the pushing plate 48, so as to limit the pipe of the exhaust pipe 100, which can avoid displacement or movement of the pipe under the action of air pressure during air tightness detection, affecting the accuracy of measurement, and improving the yield rate.

[0033] In this preferred embodiment, an elastic pad 441 is provided between the lower positioning block 44 and the support frame 43. The provision of the elastic pad 441 can prevent the upper positioning block 49 from contacting the lower positioning block 44 and causing damage to the exhaust pipe, further improving the yield rate and having wide applicability.

[0034] The bearing plate 3 is also provided with a sealing component 5 for blocking the through hole 101 on the exhaust pipe 100, and the sealing component 5 is connected to the external gas source. The sealing component 5 at least includes a sealing plate 51 fixed on the bearing plate 3, a sealing cylinder 52 fixed on the sealing plate 51, a sealing plug 53 fixed on the cylinder shaft of the sealing cylinder 52, and the sealing plug 53 is adapted to the through hole 101 on the exhaust pipe 100. In this preferred embodiment, a group of sealing components is provided on the bearing plate 3, and the sealing plug on each sealing component is adapted to the through hole on the exhaust pipe, so as to achieve complete sealing of the exhaust pipe. The above is a preferred embodiment of the utility model, and the sealing component 5 can also be other structures, all of which belong to the protection scope of the utility model. The sealing component 5 also includes a rotating cylinder 54 arranged on the sealing plate 51, and a rotating plate 55 is fixed on the cylinder shaft of the rotating cylinder 54, and the rotating plate 55 can press the flange on the end side of the exhaust pipe.

[0035] In the utility model, the support plate 3 is also integrated with a monitoring unit for monitoring the leakage point of the exhaust pipe 100. The monitoring unit can drive the airtightness detection unit to be completely immersed in the medium of the support box 2. The monitoring unit includes a driving component for driving the support plate 3 to move downward and a flipping component 6 for driving the support plate 3 to flip. Specifically, the driving component includes a guide rail 11 fixedly mounted on the frame 1, and a guide block 12 adapted thereto is provided on the guide rail 11. A transfer rack 13 is fixedly mounted on the guide block 12. The support plate 3 is fixedly mounted on the transfer rack 13. The guide block 12 and the guide rail 11 cooperate with each other to improve the stability of the movement of the transfer rack 13 and improve the accuracy of the movement. In addition, a driving cylinder 14 is fixedly mounted on the frame 1, and the transfer rack 13 is fixedly mounted on the cylinder shaft of the driving cylinder 14. The setting of the driving cylinder 14 realizes fully automatic operation, which is simple and convenient to operate and greatly improves the convenience.

[0036] The frame 1 is also provided with a flipping assembly 6 for driving the supporting plate 3 to flip, and the flipping assembly 6 at least includes pivot seats 61 arranged on both sides of the supporting plate 3, wherein a driven sprocket 62 is fixedly provided on the pivot seat 61 on one side, and a driving motor 63 is fixedly provided on the transfer rack 13, and a driving sprocket 64 is fixedly provided on the motor shaft of the driving motor 63, and the driving sprocket 64 and the driven sprocket 62 are connected by a chain 65.

[0037] The working process of the utility model is briefly described below, including the following steps:

[0038] S1. Clamp the exhaust pipe 100 and place it in the bearing groove 42 of the bearing block 41. Start the positioning cylinder 47 to drive the upper positioning block 49 to move downward and fit with the lower positioning block 44 to limit the pipe 102 of the exhaust pipe 100 in the positioning groove 45.

[0039] S2, the sealing cylinder 52 is started, driving the sealing plug 53 to be inserted into the through hole 101 of the exhaust pipe 100 and tightly fit therewith. At this time, the external gas source injects gas into the exhaust pipe 100 through the opening on the sealing plug 53 to detect whether the internal pressure changes; if there is a change, step S3 is executed; if there is no change, step S5 is executed;

[0040] S3, the driving cylinder 14 is started to drive the transfer rack 13 to move downward until the carrying plate 3 and the exhaust pipe 100 thereon are completely immersed in the medium of the carrying box 2, and the position where bubbles emerge is detected, which is determined as the leakage position and marked. After the detection is completed, step S4 is executed;

[0041] S4, the driving motor 63 is started, and the supporting plate 3 is driven to flip through the active sprocket 64, the chain 65 and the driven sprocket 62 to detect whether there is a leak on the other side of the exhaust pipe 100; when the leak point is detected, the robot can hold a marking pen to mark the position of the leak point for processing. Of course, other marking methods can also be used, which all fall within the protection scope of the present utility model and will not be elaborated here.

[0042] S5. Clamp the exhaust pipe on the supporting block 41 to a subsequent workstation.

[0043] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0044] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic exhaust pipe air tightness detection device, comprising a frame (1) and a carrying box (2) fixed thereon for accommodating a medium, characterized in that: A bearing plate (3) is provided on the frame (1); an airtightness detection unit for detecting the airtightness of the exhaust pipe (100) is provided on the bearing plate (3); the airtightness detection unit comprises a positioning component (4) provided on the bearing plate (3) for positioning the exhaust pipe (100) and a sealing component (5) for blocking a through hole (101) on the exhaust pipe (100); the sealing component (5) is in communication with an external air source; The carrier plate (3) is also integrated with a monitoring unit for monitoring the leakage point of the exhaust pipe (100); the monitoring unit can drive the airtightness detection unit to be completely immersed in the medium of the carrier box (2); the monitoring unit comprises a driving component for driving the carrier plate (3) to move downward and a flipping component (6) for driving the carrier plate (3) to flip.

2. The exhaust pipe air tightness fully automatic detection device according to claim 1 is characterized in that: The positioning assembly (4) comprises at least a bearing block (41) fixedly mounted on the bearing plate (3), the bearing block (41) being provided with a bearing groove (42), the bearing groove (42) being semicircular, and having a maximum diameter equal to the diameter of a corresponding position of the exhaust pipe (100).

3. The exhaust pipe air tightness fully automatic detection device according to claim 2 is characterized in that: The positioning assembly (4) further comprises a carrier frame (43) fixedly mounted on the carrier plate (3), a lower positioning block (44) fixedly mounted on the carrier frame (43), and a positioning groove (45) formed on the lower positioning block (44); an L-shaped fixing block (46) fixedly mounted on the carrier plate (3) is provided on one side of the carrier frame (43), one end of the fixing block (46) is pivotally connected to a positioning cylinder (47), and the other end is pivotally connected to a Z-shaped pushing plate (48), one end of the pushing plate (48) is pivotally connected to a cylinder shaft of the positioning cylinder (47), and the other end is pivotally connected to an upper positioning block (49), the upper positioning block (49) can be fitted with the lower positioning block (44) to confine the pipe (102) of the exhaust pipe (100) within the positioning groove (45).

4. The exhaust pipe air tightness fully automatic detection device according to claim 3 is characterized in that: An elastic pad (441) is provided between the lower positioning block (44) and the supporting frame (43).

5. The exhaust pipe air tightness fully automatic detection device according to claim 1 is characterized in that: The sealing assembly (5) comprises at least a sealing plate (51) fixedly mounted on the supporting plate (3), a sealing cylinder (52) fixedly mounted on the sealing plate (51), a sealing plug (53) fixedly mounted on the cylinder shaft of the sealing cylinder (52), and the sealing plug (53) being adapted to fit the through hole (101) on the exhaust pipe (100).

6. The exhaust pipe air tightness fully automatic detection device according to claim 5 is characterized in that: The sealing assembly (5) further comprises a rotating cylinder (54) arranged on the sealing plate (51), and a rotating plate (55) is fixedly arranged on the cylinder shaft of the rotating cylinder (54).

7. The exhaust pipe air tightness fully automatic detection device according to claim 1 is characterized in that: The driving assembly comprises a guide rail (11) fixedly mounted on the frame (1), a guide block (12) matched therewith being provided on the guide rail (11), a transfer frame (13) being fixedly mounted on the guide block (12), and the carrying plate (3) being fixedly mounted on the transfer frame (13).

8. The exhaust pipe air tightness fully automatic detection device according to claim 7 is characterized in that: A driving cylinder (14) is fixedly arranged on the frame (1), and the transfer rack (13) is fixedly arranged on the cylinder shaft of the driving cylinder (14).

9. The exhaust pipe air tightness fully automatic detection device according to claim 7 is characterized in that: The flip assembly (6) at least comprises pivot seats (61) arranged on both sides of the carrying plate (3), wherein a driven sprocket (62) is fixedly provided on the pivot seat (61) on one side, a driving motor (63) is fixedly provided on the transfer frame (13), a driving sprocket (64) is fixedly provided on the motor shaft of the driving motor (63), and the driving sprocket (64) and the driven sprocket (62) are connected to each other through a chain (65).

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