A rivet nozzle leak detector

Abstract

This invention relates to the field of airtightness testing technology, and more particularly to a leak detector for rivet nozzles. The detector includes a base, on which an inflation seat is fixed. The inflation seat is connected to an air pump via an air inlet pipe. A column is also fixed to one side of the base, and a fixed seat is mounted on the column. Positioning posts are fixed to both ends of the fixed seat, and each positioning post has a connecting rod rotatably connected to it. The ends of the connecting rods are mounted on a movable plate and rotatably connected to it. A push rod, rotatably connected to the bottom of the movable plate, is also provided. The push rod passes through the fixed seat and slidably connects to it. A rubber pressure head is fixed to the bottom of the push rod. This device can promptly detect the airtightness of the rivet joint between the threaded nozzle and the sealing cap, preventing defective products from flowing to the next workstation.

Description

Technical Field

[0001] This invention relates to the field of airtightness testing technology, and in particular to a rivet nozzle leak detector. Background Technology

[0002] Gasoline drums are containers used to store and transport gasoline. Common materials include sheet metal, stainless steel, and plastic, and they are mostly cylindrical or square in design.

[0003] During the production of gasoline cans, metal sheets need to be stamped to form components such as a base, sealing cap, can body, and threaded nozzle. The threaded nozzle is then riveted to the sealing cap, and the sealing cap and base are welded to the can body to form the gasoline can. Gasoline cans require airtightness testing during production. Current airtightness testing methods involve testing the entire produced gasoline can. For example, patent application number CN202321738650.7 discloses a device for testing the airtightness of gasoline cans. In use, the gasoline can is first sealed and assembled into a connecting groove. Then, two detection curtains are rotated around the outside of the gasoline can. The sealing door is then closed, and air is supplied to the gasoline can through the air inlet pipe. If there are gaps in the gasoline can, the air inside will flow through the gaps into the detection chamber, pushing the airflow within the detection chamber and creating wind that blows the detection curtains, which can be observed by the staff. However, since the base, sealing cap and barrel are seamlessly welded by argon arc welding or laser welding, the leakage point on the barrel is usually at the riveting position between the threaded nozzle and the sealing cap. The oil barrel air tightness test is usually carried out after the oil barrel is produced. After the threaded nozzle is riveted, it takes a period of time to flow to the finished product testing position. This can easily cause problems with the riveting machine, resulting in batch defects flowing into the oil barrel production position, and the riveting defects cannot be dealt with in time.

[0004] This invention was proposed in response to the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rivet nozzle leak detector.

[0006] This invention can be achieved through the following technical solutions:

[0007] This invention discloses a rivet nozzle leak detector, comprising a base, an inflatable seat fixed on the base, the inflatable seat being connected to an air pump via an air inlet pipe, a column fixed on one side of the base, a fixed seat on the column, positioning columns fixed at both ends of the fixed seat, a connecting rod rotatably connected to each positioning column, the end of each connecting rod being mounted on a movable plate and rotatably connected to the movable plate, a push rod rotatably connected to the bottom of the movable plate, the push rod passing through the fixed seat and slidably connected to the fixed seat, and a rubber pressure head fixed to the bottom of the push rod. After riveting the threaded nozzle to the sealing cap, apply a layer of soapy water to the riveting area. Place the sealing cap on the air inflator and press down on the movable plate. The movable plate pushes the push rod down, and the rubber pressure head blocks the upper end of the threaded nozzle. Then, use an air pump to inflate the space between the air inflator, the sealing cap, the threaded nozzle, and the rubber pressure head. Afterward, check if there are any bubbles at the riveting area. If no bubbles are generated, it means there are no gaps at the riveting area, and the airtightness of the sealing cap of the riveted threaded nozzle can be tested. If bubbles are generated, check and adjust the machine in time. This allows for timely detection of the airtightness of the riveting area between the threaded nozzle and the sealing cap, preventing batch defects from flowing to the next workstation.

[0008] Preferably, a pressure gauge is also fixed on the air intake pipe.

[0009] Preferably, the fixing base is equipped with a clamp for use with the column, and the clamp is fixed to the column by bolts. The position of the fixing base on the column can be adjusted according to different sizes of threaded nozzles.

[0010] Preferably, a handle is also fixed on the movable plate.

[0011] Preferably, a sealing ring is also fixed on the inflatable base. The sealing ring ensures the airtightness between the inflatable base and the sealing cover.

[0012] Compared with existing technologies, the present invention has the following advantages:

[0013] This device can detect the airtightness of the connection between the threaded nozzle and the sealing cap in a timely manner, preventing batch defects from flowing to the next workstation. Attached Figure Description

[0014] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure from another angle of the present invention;

[0017] In the diagram: 1. Sealing cap; 2. Threaded nozzle; 3. Base; 4. Inflation seat; 5. Air inlet pipe; 6. Pressure gauge; 7. Column; 8. Fixing seat; 9. Clamp; 10. Bolt; 11. Positioning pin; 12. Connecting rod; 13. Movable plate; 14. Handle; 15. Push rod; 16. Sealing ring; 17. Rubber pressure head; Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

[0019] Example 1:

[0020] like Figures 1 to 2 As shown, this embodiment discloses a rivet nozzle leak detector, including a base 3, an inflation seat 4 fixed on the base 3, the inflation seat 4 being connected to an air pump (not shown) via an air inlet pipe 5, a column 7 fixed on one side of the base 3, a fixed seat 8 provided on the column 7, positioning columns 11 fixed at both ends of the fixed seat 8, a connecting rod 12 rotatably connected to the positioning column 11 on each positioning column 11, the ends of the connecting rod 12 being provided on a movable plate 13 and rotatably connected to the movable plate 13, a push rod 15 rotatably connected to the bottom of the movable plate 13, the push rod 15 passing through the fixed seat 8 and slidably connected to the fixed seat 8, and a rubber pressure head 17 fixed at the bottom of the push rod 15. After the threaded nozzle 2 is riveted to the sealing cap 1, a layer of soapy water is applied to the riveting position of the sealing cap 1 and the threaded nozzle 2. The sealing cap 1 is placed on the air inflator 4, and the movable plate 13 is pressed down. The movable plate 13 pushes the push rod 15 down. After the rubber pressure head 17 blocks the upper end of the threaded nozzle 2, air is pumped into the space between the air inflator 4, the sealing cap 1, the threaded nozzle 2 and the rubber pressure head 17. After that, it is checked whether there are bubbles at the riveting position. If no bubbles are generated, it means that there are no gaps at the riveting position. The air tightness of the sealing cap 1 with the threaded nozzle 2 can be tested. If bubbles are generated, the machine is checked and adjusted in time. The air tightness of the riveting position of the threaded nozzle 2 and the sealing cap 1 can be detected in time to prevent batch defects from flowing into the next work station.

[0021] The fixing base 8 is equipped with a clamp 9 that works with the column 7. The clamp 9 is fixed to the column 7 by bolts 10. The position of the fixing base 8 on the column 7 can be adjusted according to different sizes of threaded nozzles 2.

[0022] A handle 14 is also fixed on the movable plate 13.

[0023] A sealing ring 16 is also fixed on the inflatable base 4. The sealing ring 16 ensures the airtightness between the inflatable base 4 and the sealing cover 1.

[0024] Example 2:

[0025] This embodiment discloses a rivet nozzle leak detector. Based on the structure and principle of embodiment 1, this embodiment also has a pressure gauge 6 fixed on the air inlet pipe 5.

[0026] The above are merely preferred embodiments of the present invention. It should be noted that, for those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be considered within the scope of protection of the present invention.

Claims

1. A leak detector for rivet nozzles, characterized in that, The device includes a base on which an inflatable seat is fixed. The inflatable seat is connected to an air pump via an air inlet pipe. A column is also fixed to one side of the base. A fixed seat is provided on the column. Positioning columns are fixed at both ends of the fixed seat. Each positioning column is provided with a connecting rod that is rotatably connected to the positioning column. The end of each connecting rod is provided on a movable plate and is rotatably connected to the movable plate. A push rod is also provided at the bottom of the movable plate and is rotatably connected to the movable plate. The push rod passes through the fixed seat and is slidably connected to the fixed seat. A rubber pressure head is fixed at the bottom of the push rod.

2. The rivet nozzle leak detector according to claim 1, characterized in that, A pressure gauge is also fixed on the air intake pipe.

3. The rivet nozzle leak detector according to claim 1, characterized in that, The mounting base is fixed with a clamp for use with the column, and the clamp is fixed to the column by bolts.

4. The rivet nozzle leak detector according to claim 1, characterized in that, A handle is also fixed to the movable plate.

5. The rivet nozzle leak detector according to claim 1, characterized in that, A sealing ring is also fixed on the inflatable base.

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