Welding seam detection device for aluminum pipe

Abstract

The utility model discloses a device for detecting a welding seam of an aluminum pipe, which relates to the field of aluminum pipe detection devices and comprises a bottom plate, an L-shaped plate is fixedly arranged on the rear side of the upper end of the bottom plate, a conical upper sealing plug is slidably mounted on the front side of the vertical part of the L-shaped plate through a lifting mechanism, and an inflation pipe is fixedly arranged at the lower end of the upper sealing plug. The L-shaped plate is provided with an inflation mechanism communicated with the inflation pipe, the upper end of the bottom plate is fixedly provided with a fixing seat, the upper end of the fixing seat is fixedly provided with a lower sealing plug vertically aligned with the upper sealing plug, the upper end of the lower sealing plug is fixedly provided with an air pressure sensor, and the front side of the fixing seat is fixedly provided with a display screen. And the air pressure sensor is in signal connection with the display screen. The device can directly detect the air tightness of the welding seam of the aluminum pipe, is simple to operate, does not need to reprocess the aluminum pipe, and is convenient for people to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum tube detection devices, in particular to a device for detecting welding seams of aluminum tubes. Background Art

[0002] Aluminum tube is a kind of non-ferrous metal tube, which refers to a metal tubular material that is hollow along its entire longitudinal length by extrusion of pure aluminum or aluminum alloy. Aluminum is a metal element with the element symbol Al and the atomic number 13. Its single substance is a silvery-white light metal with ductility. The product is often made into rods, sheets, foils, powders, strips and wires. It can form an oxide film to prevent metal corrosion in humid air. Aluminum powder can burn violently when heated in the air and emit a dazzling white flame. It is easily soluble in dilute sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide and potassium hydroxide solutions, but difficult to dissolve in water.

[0003] At present, aluminum tubes are often welded after production and manufacturing. In order to ensure the air tightness of the aluminum tube welding points, it is generally necessary to perform air tightness detection on the welds of the aluminum tubes. In the prior art, when performing air tightness detection on the welds of the aluminum tubes, a general method is to flatten the finished tube body so that the welds are just on both sides of the flattened tube body, thereby observing the condition of the welds. This method not only damages the aluminum tube, but also requires the aluminum tube to be processed again, increasing the processing difficulty. Therefore, a device for detecting the welds of aluminum tubes is proposed. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a device for detecting the weld of an aluminum tube, which effectively solves the problem that the general method for detecting the air tightness of the weld of an aluminum tube is to flatten the finished tube body so that the weld is just on the two side edges of the flattened tube body, thereby observing the condition of the weld. This method not only damages the aluminum tube, but also requires the aluminum tube to be processed again, increasing the difficulty of processing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for detecting welds of aluminum tubes, comprising a base plate, an L-shaped plate is fixedly provided on the rear side of the upper end of the base plate, a conically arranged upper sealing plug is slidably installed on the front side of the vertical portion of the L-shaped plate through a lifting mechanism, an inflation tube is fixedly provided on the lower end of the upper sealing plug, an inflation mechanism connected to the inflation tube is provided on the L-shaped plate, a fixing seat is fixedly provided on the upper end of the base plate, a lower sealing plug vertically aligned with the upper sealing plug is fixedly provided on the upper end of the fixing seat, an air pressure sensor is fixedly provided on the upper end of the lower sealing plug, a display screen is fixedly provided on the front side of the fixing seat, and the air pressure sensor is connected to the display screen signal.

[0006] Preferably, the lifting mechanism includes a cylinder, a lifting plate and a connecting block, the lifting plate is fixedly arranged at the upper end of the upper sealing plug, the vertical portion of the L-shaped plate is provided with a vertically arranged strip opening, the connecting block is slidably arranged in the strip opening, the front end of the connecting block is fixedly connected to the lifting plate, the fixed end of the cylinder is vertically fixedly arranged at the lower rear side of the L-shaped plate, and the upper end of the cylinder is fixedly connected to the connecting block.

[0007] Preferably, a vertically arranged guide rod is fixedly arranged in the strip-shaped opening, and the connecting block is slidably sleeved on the guide rod through the guide opening.

[0008] Preferably, the inflation mechanism includes an air pump and a hose, the air pump is fixedly arranged at the upper end of the horizontal part of the L-shaped plate, the output end of the air pump is fixedly connected to the input end of the hose, and the output end of the hose is fixedly passed through the lifting plate and the upper sealing plug and is fixedly connected to the input end of the inflation tube.

[0009] Preferably, two horizontally arranged rings are provided between the upper sealing plug and the lower sealing plug, the two rings are fixed to each other by a plurality of fixing rods, and a plurality of films are also fixedly provided between the two rings, the plurality of films are evenly distributed in a ring shape, a vertically arranged slide rail is fixedly provided on the left side of the L-shaped plate, a slider is slidably provided in the slide rail, the right end of the slider is fixedly connected to the two rings through a U-shaped fixing plate, a vertically arranged threaded rod is rotatably provided in the slide rail through a bearing, the threaded rod is threadedly connected to the slider, and the upper end of the threaded rod extends to the top of the slide rail and is fixedly connected to a handwheel.

[0010] Technical effects and advantages of the utility model:

[0011] 1. When in use, the aluminum tube with detection is placed vertically between the upper sealing plug and the lower sealing plug, and the inflation tube and the air pressure sensor are respectively inserted into the upper and lower ends of the aluminum tube, and the connecting block and the lifting plate are driven downward by the cylinder until the upper and lower sealing plugs seal the upper and lower ends of the aluminum tube respectively, and then the inside of the aluminum tube is inflated by the air pump. After inflating for a period of time, the inflation is stopped, and the gas pressure inside the aluminum tube is detected by the air pressure sensor to check whether the gas pressure inside the aluminum tube is reduced. If the air pressure remains unchanged, the air tightness of the weld of the aluminum tube is good. If the gas pressure inside the aluminum tube is reduced, the air tightness of the weld of the aluminum tube is poor. Through the above device, the air tightness of the weld of the aluminum tube can be directly detected, the operation is simple, and the aluminum tube does not need to be processed again, which is convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall front structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the side cross-sectional structure of the L-shaped plate of the utility model;

[0015] Figure 3 It is a schematic diagram of the top view structure of the circular ring and multiple films of the utility model.

[0016] In the figure: 1. bottom plate; 2. L-shaped plate; 3. upper sealing plug; 4. inflation tube; 5. fixing seat; 6. lower sealing plug; 7. display screen; 8. air pressure sensor; 9. cylinder; 10. lifting plate; 11. connecting block; 12. guide rod; 13. air pump; 14. hose; 15. ring; 16. fixing rod; 17. film; 18. slide rail; 19. slider; 20. threaded rod; 21. hand wheel. DETAILED DESCRIPTION

[0017] The utility model provides Figure 1-3 The device shown is used for detecting welds of aluminum tubes, and comprises a base plate 1, an L-shaped plate 2 is fixedly provided on the rear side of the upper end of the base plate 1, a conically provided upper sealing plug 3 is slidably installed on the front side of the vertical part of the L-shaped plate 2 through a lifting mechanism, an inflation tube 4 is fixedly provided on the lower end of the upper sealing plug 3, an inflation mechanism connected with the inflation tube 4 is provided on the L-shaped plate 2, a fixing seat 5 is fixedly provided on the upper end of the base plate 1, a lower sealing plug 6 vertically aligned with the upper sealing plug 3 is fixedly provided on the upper end of the fixing seat 5, an air pressure sensor 8 is fixedly provided on the upper end of the lower sealing plug 6, a display screen 7 is fixedly provided on the front side of the fixing seat 5, and the air pressure sensor 8 is connected to the display screen 7 by signal.

[0018] like Figure 2 As shown, the lifting mechanism includes a cylinder 9, a lifting plate 10 and a connecting block 11. The lifting plate 10 is fixedly arranged at the upper end of the upper sealing plug 3. The vertical portion of the L-shaped plate 2 is provided with a vertically arranged strip opening. The connecting block 11 is slidably arranged in the strip opening. The front end of the connecting block 11 is fixedly connected to the lifting plate 10. The fixed end of the cylinder 9 is vertically fixedly arranged at the lower rear side of the L-shaped plate 2 and fixedly connected. The upper end of the cylinder 9 is fixedly connected to the connecting block 11.

[0019] like Figure 2 As shown, a vertically arranged guide rod 12 is fixedly arranged in the strip-shaped opening, and the connecting block 11 is slidably sleeved with the guide rod 12 through the guide opening, which can guide the connecting block 11 when it moves vertically, making the connecting block 11 more stable when it moves vertically.

[0020] like Figure 1As shown, the inflation mechanism includes an air pump 13 and a hose 14. The air pump 13 is fixedly arranged at the upper end of the horizontal part of the L-shaped plate 2. The output end of the air pump 13 is fixedly connected to the input end of the hose 14. The output end of the hose 14 is fixedly penetrated through the lifting plate 10 and the upper sealing plug 3 and is fixedly connected to the input end of the inflation tube 4, so as to inflate the interior of the aluminum tube.

[0021] like Figure 1 and Figure 3 As shown, two horizontally arranged rings 15 are arranged between the upper sealing plug 3 and the lower sealing plug 6, and the two rings 15 are fixed to each other by a plurality of fixing rods 16, and a plurality of films 17 are also fixedly arranged between the two rings 15, and the plurality of films 17 are evenly distributed in a ring shape, a vertically arranged slide rail 18 is fixedly arranged on the left side of the L-shaped plate 2, a slider 19 is slidably arranged in the slide rail 18, and the right end of the slider 19 is fixedly connected to the two rings 15 through a U-shaped fixing plate, and a vertically arranged threaded rod 20 is rotatably arranged in the slide rail 18 through a bearing, and the threaded rod 20 is threadedly connected to the slider 19, and the threaded rod 20 The upper end extends to the top of the slide rail 18 and is fixedly connected with a hand wheel 21. When the air tightness of the weld of the aluminum tube needs to be tested, the aluminum tube can be passed through the two rings 15. When the aluminum tube is fixed, the threaded rod 20 is driven to rotate by turning the hand wheel 21. The rotation of the threaded rod 20 drives the slider 19 to move vertically. The slider 19 drives the two rings 15 to move vertically through the U-shaped plate. The two rings 15 drive multiple films 17 therein to move, so that the multiple films 17 are flush with the weld position of the aluminum tube. Therefore, when the air tightness of the weld of the aluminum tube is poor, the gas will leak from the weld and blow onto the film 17, which is convenient for people to detect.

[0022] The working principle of the utility model is as follows: when in use, the aluminum tube with detection is placed vertically between the upper sealing plug 3 and the lower sealing plug 6, and the inflation tube 4 and the air pressure sensor 8 are respectively inserted into the upper and lower ends of the aluminum tube, and the connecting block 11 and the lifting plate 10 are driven downward by the cylinder 9 until the upper and lower sealing plugs 3 and the lower sealing plug 6 respectively seal the upper and lower ends of the aluminum tube, and then the interior of the aluminum tube is inflated by the air pump 13. After inflating for a period of time, the inflation is stopped, and the gas pressure inside the aluminum tube is detected by the air pressure sensor 8 to check whether the gas pressure inside the aluminum tube is reduced. If the air pressure remains unchanged, the air tightness of the weld of the aluminum tube is better. If the gas pressure inside the aluminum tube is reduced, the air tightness of the weld of the aluminum tube is poor. Through the upper device, the air tightness of the weld of the aluminum tube can be directly detected. The operation is simple, and there is no need to process the aluminum tube again, which is convenient for people to use.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting welds of aluminum tubes, characterized in that: The invention comprises a bottom plate (1), an L-shaped plate (2) is fixedly provided on the rear side of the upper end of the bottom plate (1), a conically arranged upper sealing plug (3) is slidably installed on the front side of the vertical part of the L-shaped plate (2) through a lifting mechanism, an inflation tube (4) is fixedly provided on the lower end of the upper sealing plug (3), an inflation mechanism connected to the inflation tube (4) is provided on the L-shaped plate (2), a fixing seat (5) is fixedly provided on the upper end of the bottom plate (1), a lower sealing plug (6) vertically aligned with the upper sealing plug (3) is fixedly provided on the upper end of the fixing seat (5), an air pressure sensor (8) is fixedly provided on the upper end of the lower sealing plug (6), a display screen (7) is fixedly provided on the front side of the fixing seat (5), and the air pressure sensor (8) is connected to the display screen (7) by signal.

2. The device for detecting weld seams of aluminum tubes according to claim 1, characterized in that: The lifting mechanism comprises a cylinder (9), a lifting plate (10) and a connecting block (11); the lifting plate (10) is fixedly arranged at the upper end of the upper sealing plug (3); the vertical portion of the L-shaped plate (2) is provided with a vertically arranged strip opening; the connecting block (11) is slidably arranged in the strip opening; the front end of the connecting block (11) is fixedly connected to the lifting plate (10); the fixed end of the cylinder (9) is vertically fixedly arranged at the lower rear side of the L-shaped plate (2) and fixedly connected; and the upper end of the cylinder (9) is fixedly connected to the connecting block (11).

3. The device for detecting weld seams of aluminum tubes according to claim 2 is characterized in that: A vertically arranged guide rod (12) is fixedly arranged in the strip-shaped opening, and the connecting block (11) is slidably sleeved on the guide rod (12) through the guide opening.

4. The device for detecting weld seams of aluminum tubes according to claim 3 is characterized in that: The inflation mechanism comprises an air pump (13) and a hose (14); the air pump (13) is fixedly arranged at the upper end of the horizontal portion of the L-shaped plate (2); the output end of the air pump (13) is fixedly connected to the input end of the hose (14); the output end of the hose (14) is fixedly passed through the lifting plate (10) and the upper sealing plug (3) and is fixedly connected to the input end of the inflation tube (4).

5. The device for detecting weld seams of aluminum tubes according to claim 4 is characterized in that: Two horizontally arranged circular rings (15) are arranged between the upper sealing plug (3) and the lower sealing plug (6), and the two circular rings (15) are fixed to each other by a plurality of fixing rods (16), and a plurality of films (17) are also fixedly arranged between the two circular rings (15), and the plurality of films (17) are evenly distributed in a ring shape. A vertically arranged slide rail (18) is fixedly arranged on the left side of the L-shaped plate (2), and a slider (19) is slidably arranged in the slide rail (18), and the right end of the slider (19) is fixedly connected to the two circular rings (15) through a U-shaped fixing plate. A vertically arranged threaded rod (20) is rotatably arranged in the slide rail (18) through a bearing, and the threaded rod (20) is threadedly connected to the slider (19), and the upper end of the threaded rod (20) extends to the top of the slide rail (18) and is fixedly connected to a hand wheel (21).

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