Aluminum casting air tightness detection device

Abstract

The utility model discloses an aluminum casting air tightness detection device which comprises a detection table, a lifting sealing mechanism, a detection mechanism and a fixing mechanism, the lifting sealing mechanism comprises a support, electric telescopic rods, a detection cover, a sealing rubber strip and a rubber sealing groove, the support is fixedly arranged on the detection table, and the electric telescopic rods are symmetrically and fixedly arranged on the top of the support. A detection cover is fixedly arranged at the telescopic end of the electric telescopic rod, two groups of sealing rubber strips are fixedly arranged at the bottom of the detection cover in a surrounding manner, two groups of rubber sealing grooves are concentrically formed in the detection table in a surrounding manner, a detection mechanism is arranged in the detection cover, and a fixing mechanism is arranged in the middle of the detection table; the electric telescopic rod stretches out and draws back to drive the detection cover to ascend and descend so that the aluminum casting can be conveniently taken and placed from the lower portion, the problem that the aluminum casting is inconvenient to take and place is solved, the air pressure is increased by inflating the interior of the aluminum casting through the air pump, the air pressure is observed and recorded through the second barometer, and the airtight performance of the aluminum casting is judged according to the numerical value change of the second barometer.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum casting processing equipment, in particular to an air tightness detection device for aluminum castings. Background Technique

[0002] Aluminum castings refer to equipment devices made of pure aluminum or aluminum alloy by means of casting. Generally, sand molds or metal molds are used to pour molten aluminum or aluminum alloy into the mold cavity, and various shaped and sized aluminum parts or aluminum alloy parts obtained are usually called aluminum die castings. Poor air tightness of aluminum alloy castings means that when a certain pressure is applied inside the die casting, leakage occurs from the inside or outside of the casting, resulting in a pressure drop. If such castings are put into use, they may show oil leakage, air leakage, water leakage, etc. After the aluminum castings are processed, it is necessary to detect their air tightness;

[0003] In the utility model with the application number 202321120667.6, an air tightness detection device for aluminum castings is disclosed. By setting a component convenient for taking, the stability of the aluminum casting can be ensured during the air tightness detection of the aluminum casting, thereby ensuring the effect of the air tightness detection of the aluminum casting, and it is convenient to take the aluminum casting after the air tightness detection of the aluminum casting is completed, improving the convenience of taking the aluminum casting;

[0004] However, in the above-mentioned air tightness detection device for aluminum castings, the telescopic stroke of the electric push rod is limited, which is likely to limit the taking and placing of the aluminum casting. The above-mentioned air tightness detection device for aluminum castings can only judge the air tightness of the aluminum casting by observing whether there are bubbles emerging in the water inside the detection cylinder, and cannot specifically collect the air leakage data. The above-mentioned air tightness detection device for aluminum castings cannot quickly deflate to ensure the safety of the device and personnel in case of emergencies. Therefore, the utility model proposes an air tightness detection device for aluminum castings to solve the problems existing in the prior art. Content of the Utility Model

[0005] Aiming at the above problems, the purpose of the utility model is to propose an air tightness detection device for aluminum castings. The air tightness detection device for aluminum castings drives the detection cover to lift by the telescopic movement of the electric telescopic rod, which is convenient for taking and placing the aluminum casting from below, solving the problem of inconvenient taking and placing of the aluminum casting. The air pressure inside the aluminum casting is increased by inflating with an air pump, and it is observed and recorded by the second pressure gauge. The air tightness performance of the aluminum casting is judged by the change of the value of the second pressure gauge. The air pressure change inside the aluminum casting is detected in real time by a pressure sensor. When the air pressure is too high, the solenoid valve is opened to deflate through the exhaust pipe, solving the problem of inability to quickly deflate in case of emergencies.

[0006] To achieve the purpose of the present utility model, the present utility model is realized through the following technical solutions: An airtightness detection device for aluminum castings, comprising a detection table, a lifting and sealing mechanism, a detection mechanism, and a fixing mechanism. The lifting and sealing mechanism includes a bracket, an electric telescopic rod, a detection cover, a sealing rubber strip, and a rubber sealing groove. The bracket is fixedly arranged on the detection table. Electric telescopic rods are symmetrically and fixedly arranged at the top of the bracket. The telescopic end of the electric telescopic rod is fixedly provided with a detection cover. The sealing rubber strip is fixedly arranged around the bottom of the detection cover. There are two groups of the sealing rubber strips. Rubber sealing grooves are circumferentially formed on the detection table. There are two groups of the rubber sealing grooves arranged concentrically. A detection mechanism is arranged inside the detection cover, and a fixing mechanism is arranged in the middle of the detection table.

[0007] Further improvement lies in: The detection mechanism includes an air pump, an air delivery pipe, a sealing ring, a first pressure gauge, a second pressure gauge, and an exhaust mechanism. The air pump is fixedly arranged on one side of the bracket. An air delivery pipe is connected between the air pump and the detection cover. The sealing ring is fixedly arranged above the inside of the detection cover. The first pressure gauge is communicated and arranged on one side of the detection cover. The second pressure gauge is communicated and arranged on one side of the detection cover. An exhaust mechanism is arranged on the other side of the detection cover.

[0008] Further improvement lies in: The exhaust mechanism includes an exhaust pipe, an electromagnetic valve, a pressure sensor, and an electric control switch. The exhaust pipe is communicated and arranged on the other side of the detection cover. The electromagnetic valve is installed on the exhaust pipe. The pressure sensor is fixedly arranged above the inside of the detection cover. The electric control switch is fixedly arranged on the other side of the detection cover.

[0009] Further improvement lies in: The fixing mechanism includes an installation groove, a fixing plate, fixing holes, limiting grooves, and limiting blocks. The installation groove is formed in the middle of the detection table. The fixing plate is installed and placed in the installation groove. Fixing holes are circumferentially formed above the fixing plate. Limiting grooves are symmetrically formed on both sides of the installation groove. Limiting blocks are symmetrically and fixedly arranged on both sides of the fixing plate.

[0010] Further improvement lies in: The limiting blocks are inserted into the limiting grooves in a matching manner for fixation.

[0011] The beneficial effects of the present utility model are as follows: The present utility model drives the lifting of the detection cover through the telescopic movement of the electric telescopic rod, which is convenient for taking and placing the aluminum casting from below, solving the problem of inconvenient taking and placing of the aluminum casting. The air pump is used to inflate the aluminum casting to increase the air pressure, and the second pressure gauge is used to observe and record. The airtightness performance of the aluminum casting is judged by the change of the value of the second pressure gauge. The pressure sensor is used to detect the change of the air pressure inside the aluminum casting in real time. When the air pressure is too high, the electromagnetic valve is opened to release the air through the exhaust pipe, solving the problem of being unable to quickly release the air in case of emergencies. Description of the Drawings

[0012] Figure 1 It is the overall front view sectional view of the present utility model;

[0013] Figure 2 Top view of the fixed plate of the present utility model;

[0014] Figure 3 Enlarged schematic view of part A of the present utility model.

[0015] Wherein: 1, detection table; 2, bracket; 3, electric telescopic rod; 4, detection cover; 5, sealing strip; 6, rubber sealing groove; 7, air pump; 8, air delivery pipe; 9, sealing ring; 10, first pressure gauge; 11, second pressure gauge; 12, exhaust pipe; 13, solenoid valve; 14, pressure sensor; 15, electric control switch; 16, installation groove; 17, fixed plate; 18, fixing hole; 19, limit groove; 20, limit block. Specific embodiments

[0016] To deepen the understanding of the present utility model, the following will further elaborate on the present utility model in conjunction with embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0017] According to Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides an airtightness detection device for aluminum castings, including a detection table 1, a lifting and sealing mechanism, a detection mechanism, and a fixing mechanism. The lifting and sealing mechanism includes a bracket 2, an electric telescopic rod 3, a detection cover 4, a sealing strip 5, and a rubber sealing groove 6. A bracket 2 is fixedly provided on the detection table 1. Electric telescopic rods 3 are symmetrically and fixedly provided at the top of the bracket 2. A detection cover 4 is fixedly provided at the telescopic end of the electric telescopic rod 3. Sealing strips 5 are fixedly provided around the bottom of the detection cover 4. There are two groups of sealing strips 5. Rubber sealing grooves 6 are provided around the detection table 1 in two concentric groups. A detection mechanism is provided inside the detection cover 4. A fixing mechanism is provided in the middle of the detection table 1. When detecting, the electric telescopic rod 3 extends to drive the detection cover 4 to descend above the detection table 1. The sealing strip 5 and the rubber sealing groove 6 cooperate to seal the inside of the detection cover 4. After the detection is completed, the electric telescopic rod 3 retracts to drive the detection cover 4 to rise, facilitating the removal of the aluminum casting from below, solving the problem that the stroke of the electric push rod is limited and it is inconvenient to take and place the aluminum casting.

[0018] The detection mechanism includes an air pump 7, an air delivery pipe 8, a sealing ring 9, a first pressure gauge 10, a second pressure gauge 11 and an exhaust mechanism. On one side of the bracket 2, the air pump 7 is fixedly installed. An air delivery pipe 8 is connected between the air pump 7 and the detection cover 4. Above the detection cover 4, the sealing ring 9 is fixedly installed. On one side of the detection cover 4, the first pressure gauge 10 is communicated. On one side of the detection cover 4, the second pressure gauge 11 is communicated. On the other side of the detection cover 4, the exhaust mechanism is provided. When detecting, the air pump 7 is started to push air into the aluminum casting through the air delivery pipe 8 to increase the internal air pressure of the aluminum casting, and the second pressure gauge 11 is used to detect the change of the external air pressure of the aluminum casting, so as to judge the airtightness formation of the aluminum casting. At the same time, the first pressure gauge 10 is convenient for visually controlling the pressurization degree and accurately collecting the airtightness data of the aluminum casting.

[0019] The exhaust mechanism includes an exhaust pipe 12, an electromagnetic valve 13, a pressure sensor 14 and an electric control switch 15. The exhaust pipe 12 is communicated on the other side of the detection cover 4. The electromagnetic valve 13 is installed on the exhaust pipe 12. Above the detection cover 4, the pressure sensor 14 is fixedly installed. On the other side of the detection cover 4, the electric control switch 15 is fixedly installed. When pressurizing, the pressure sensor 14 senses the change of the internal air pressure of the aluminum casting in real time. When the internal air pressure of the aluminum casting exceeds the set value, for safety reasons, the electric control switch 15 controls the electromagnetic valve 13 to open for exhaust, preventing the problem that the air cannot be quickly released in case of emergencies and effectively ensuring the safety of the device and personnel.

[0020] The fixing mechanism includes an installation groove 16, a fixing disk 17, fixing holes 18, a limiting groove 19 and a limiting block 20. An installation groove 16 is opened in the middle of the detection table 1. The fixing disk 17 is installed in the installation groove 16. Above the fixing disk 17, fixing holes 18 are surrounded and opened. On both sides of the installation groove 16, limiting grooves 19 are symmetrically opened. On both sides of the fixing disk 17, limiting blocks 20 are symmetrically and fixedly installed. The limiting blocks 20 are inserted into the limiting grooves 19 for cooperation and fixation. When placing the aluminum casting, the fixing disk 17 can be customized and replaced according to the shape of the aluminum casting. When placing, the bottom of the aluminum casting is inserted into the corresponding fixing holes 18 to effectively prevent the aluminum casting from displacing during the test.

[0021] For the airtightness detection device of the aluminum casting, first, the corresponding fixing disk is placed in the installation groove according to the model of the aluminum casting, and the limiting block is inserted into the limiting groove for limiting. The aluminum casting is placed on the fixing disk according to the position of the fixing holes. When detecting, the electric telescopic rod extends to drive the detection cover to descend to the detection table. The sealing rubber sleeve is inserted into the rubber sealing groove for sealing, and the sealing ring presses the aluminum casting from above for sealing. The air pump is started to inflate and pressurize the aluminum casting through the air delivery pipe. The first pressure gauge and the pressure sensor monitor the change of the internal air pressure of the aluminum casting in real time. The second pressure gauge monitors the air pressure change in the detection cover to judge the airtightness of the aluminum casting. When the pressure sensor senses that the internal air pressure of the aluminum casting is too high, the electric control switch controls the electromagnetic valve to open and quickly exhaust through the exhaust pipe to reduce the air pressure.

[0022] The basic principles, main features, and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An aluminum casting air tightness detection device, characterized in that: The invention comprises a detection platform (1), a lifting sealing mechanism, a detection mechanism and a fixing mechanism. The lifting sealing mechanism comprises a bracket (2), an electric telescopic rod (3), a detection cover (4), a sealing rubber strip (5) and a rubber sealing groove (6). The detection platform (1) is fixedly provided with a bracket (2). The top of the bracket (2) is symmetrically fixedly provided with an electric telescopic rod (3). The telescopic end of the electric telescopic rod (3) is fixedly provided with a sealing rubber strip (5). The bottom of the detection cover (4) is fixedly provided with two groups of sealing rubber strips. The detection platform (1) is provided with a rubber sealing groove (6) around it. The rubber sealing groove (6) is concentrically provided with two groups. The detection mechanism is provided in the detection cover (4). The fixing mechanism is provided in the middle of the detection platform (1).

2. The air tightness detection device for aluminum castings according to claim 1, characterized in that: The detection mechanism comprises an air pump (7), an air delivery pipe (8), a sealing ring (9), a first air pressure gauge (10), a second air pressure gauge (11) and an exhaust mechanism. The air pump (7) is fixedly provided on one side of the bracket (2), an air delivery pipe (8) is connected between the air pump (7) and the detection cover (4), a sealing ring (9) is fixedly provided on the upper part of the detection cover (4), the first air pressure gauge (10) is connected to one side of the detection cover (4), the second air pressure gauge (11) is connected to one side of the detection cover (4), and the exhaust mechanism is provided on the other side of the detection cover (4).

3. The air tightness detection device for aluminum castings according to claim 2, characterized in that: The exhaust mechanism comprises an exhaust pipe (12), an electromagnetic valve (13), an air pressure sensor (14) and an electric control switch (15); the other side of the detection cover (4) is connected to the exhaust pipe (12); the exhaust pipe (12) is installed with the electromagnetic valve (13); the air pressure sensor (14) is fixedly arranged on the upper part of the detection cover (4); and the other side of the detection cover (4) is fixedly arranged with the electric control switch (15).

4. The air tightness detection device for aluminum castings according to claim 1, characterized in that: The fixing mechanism comprises a mounting groove (16), a fixing plate (17), a fixing hole (18), a limiting groove (19) and a limiting block (20); a mounting groove (16) is provided in the middle of the detection platform (1); a fixing plate (17) is installed in the mounting groove (16); a fixing hole (18) is provided around the top of the fixing plate (17); limiting grooves (19) are symmetrically provided on both sides of the mounting groove (16); and limiting blocks (20) are symmetrically fixedly provided on both sides of the fixing plate (17).

5. The air tightness detection device for aluminum castings according to claim 4 is characterized in that: The limiting block (20) is inserted into the limiting groove (19) for fixing.

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