Air tightness detection device for automobile aluminum alloy die casting

Abstract

The utility model discloses an air tightness detection device for an automobile aluminum alloy die casting, which relates to the technical field of aluminum alloy casting detection and comprises a workbench, the top surface of the workbench is provided with a placing groove for placing the automobile aluminum alloy die casting, a sealing box is arranged above the placing groove, the inner side of the sealing box is provided with two isolation plates, and the two isolation plates are arranged in the placing groove. An adjusting assembly is fixedly connected to one sides of the two isolation plates, a barometer is arranged on the top face of the sealing box, a mounting frame is fixedly mounted on the top face of the workbench, a hydraulic rod is mounted on the top face of the mounting frame, the bottom end of the hydraulic rod extends downwards by a certain distance, and the extending end is fixedly connected with the top face of the sealing box. During use, the sealing space in the sealing box can be actively adjusted according to the size of the die casting, the dilution degree of the air pressure flowing out of the surface of the die casting during detection is reduced, the detection time is shortened, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy die casting detection, in particular to an air tightness detection device for automobile aluminum alloy die castings. Background Art

[0002] Aluminum alloy die castings refer to pure aluminum or aluminum alloy equipment and components obtained by casting. Generally, aluminum or aluminum alloy heated to liquid form is poured into the mold cavity using a sand mold or a metal mold, and the aluminum parts or aluminum alloy parts of various shapes and sizes obtained are usually called aluminum die castings. Products made with various grades have a wide range of uses, such as auto parts, various household items, and industrial machine parts.

[0003] For example, a device for detecting the air tightness of aluminum alloy die castings is disclosed in the utility model with authorization announcement number CN210533630U. The cylinder is set outside for easy later maintenance, and a rectangular sealing cover with a smaller volume than the aluminum alloy casting is set. The detection efficiency is faster and the aluminum alloy casting is more convenient to take. The rubber pad is tightly fitted with the aluminum alloy casting to avoid air leakage, making the detection effect more accurate.

[0004] This prior art also has the following problems when used:

[0005] Since the space in the sealing cover of the device is fixed, it is impossible to actively change the sealing space inside the sealing cover according to the size and volume of the die-casting. Therefore, when the device is testing die-castings with smaller volume and size, the air pressure flowing out from the gap of the die-casting during testing will diffuse into the space inside the sealing cover, and then dilute the outflowing air pressure, which greatly prolongs the time required for testing. When the gap on the surface of the die-casting is small, the outflow of air pressure is also small, and the sealing space cannot be changed. The only way to judge whether the die-casting is qualified is to extend the testing time, which greatly reduces the testing efficiency. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides an automotive aluminum alloy die-casting air tightness detection device. Through the adjustment component, when in use, the rotating rod can be rotated, and the rotating rod drives the tooth column to rotate on the tooth plate. Since the tooth plate is meshed and connected with the tooth column, and the rotating rod is penetrated through the sealing box and the position remains unchanged, when the tooth column rotates, the length of the tooth plate exposed to the outside can be extended. When the tooth plate is extended, the tooth plate can drive the push plate to one side, and the push plate can drive the isolation plate to move, and the distance between the two isolation plates is adjusted to a distance consistent with the die-casting to be die-cast. In this way, the sealing space inside the sealing box can be actively adjusted according to the size of the die-casting, thereby reducing the dilution degree of the outflowing air pressure on the surface of the die-casting during detection, reducing the detection time, and improving the detection efficiency.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: an air tightness detection device for automobile aluminum alloy die-castings, comprising a workbench, the top surface of the workbench is provided with a placement groove for placing automobile aluminum alloy die-castings, a sealing box is provided above the placement groove, two isolation plates are provided on the inner side of the sealing box, one side of the two isolation plates is fixedly connected with an adjustment component, the top surface of the sealing box is provided with a pressure gauge, the top surface of the workbench is fixedly installed with a mounting frame, the top surface of the mounting frame is installed with a hydraulic rod, and the bottom end of the hydraulic rod extends downward for a distance, and the extended end is fixedly connected to the top surface of the sealing box.

[0008] Preferably, the adjustment assembly is composed of a tooth plate, a tooth column, a rotating rod and a push plate, one side of the tooth plate is meshingly connected with the tooth column, one end of the tooth column is fixedly connected to the rotating rod, one side of the push plate is fixedly connected to the tooth plate, and the other side of the push plate is fixedly connected to one side of the isolation plate.

[0009] Preferably, two twisting blocks are provided on one side of the sealing box, and the twisting blocks are fixedly connected to the rotating rod.

[0010] Preferably, mounting shells are provided on both sides of the sealing box, and the tooth plates and tooth columns are arranged inside the sealing box.

[0011] Preferably, a perspective window is provided on one side of the sealing box.

[0012] Preferably, support rods are fixedly connected at the four corners of the bottom surface of the workbench, the bottom ends of the support rods are fixedly connected to a mounting plate, an air pump is provided on the bottom surface of the mounting plate, an air outlet pipe is connected to the top surface of the air pump, and the top end of the air outlet pipe extends into the inner side of the placement groove.

[0013] Preferably, support legs are fixedly connected to the four corners of the bottom surface of the mounting plate.

[0014] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0015] 1. The utility model has an adjustment component. When in use, the rotating rod can be rotated to drive the tooth column to rotate on the tooth plate. Since the tooth plate is meshed and connected with the tooth column, and the rotating rod is penetrated through the sealing box and its position remains unchanged, when the tooth column rotates, the length of the tooth plate exposed to the outside can be extended. When the tooth plate is extended, the tooth plate can drive the push plate to one side, and the push plate can drive the isolation plate to move, and the distance between the two isolation plates is adjusted to a distance consistent with the die-casting to be die-cast. In this way, the sealing space inside the sealing box can be actively adjusted according to the size of the die-casting, thereby reducing the dilution degree of the outflowing air pressure on the surface of the die-casting during detection, reducing the detection time, and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a front view plan view of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the sealing box of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0020] Among them: 1. workbench; 2. placement groove; 3. exhaust pipe; 4. installation frame; 5. sealing box; 6. air pump; 7. pressure gauge; 8. hydraulic rod; 9. installation shell; 10. support rod; 11. installation plate; 12. support leg; 13. perspective window; 14. turning rod; 15. twisting block; 16. tooth plate; 17. push plate; 18. isolation plate; 19. tooth column; 20. sealing rubber block. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0022] Example

[0023] Please refer to Figure 1-2As shown, the utility model provides an air tightness detection device for automobile aluminum alloy die castings, comprising a workbench 1, a placement groove 2 for placing automobile aluminum alloy die castings is opened on the top surface of the workbench 1, a mounting frame 4 is fixedly connected to the top surface of the workbench 1, a sealing box 5 is arranged on the inner side of the mounting frame 4, a hydraulic rod 8 is arranged on the top surface of the mounting frame 4, and the telescopic end of the hydraulic rod 8 extends downward into the inner side of the mounting frame 4, and the telescopic end is fixedly connected to the sealing box 5, so that the hydraulic rod 8 can be driven to drive the sealing box 5 to rise and fall, and the size of the placement groove 2 is larger than the bottom surface size of the sealing box 5, so that the sealing box 5 can be lowered to the inner side of the placement groove 2, and the bottom wall of the placement groove 2 is paved with rubber, when the bottom surface of the sealing box 5 contacts the bottom wall of the placement groove 2, the bottom wall of the sealing box 5 will extend downward due to the softness of the rubber. The workbench 1 is extended and recessed for a certain distance, thereby increasing the sealing performance inside the sealing box 5. Support rods 10 are fixedly connected at the four corners of the bottom surface of the workbench 1. The bottom end of the support rod 10 is fixedly connected to a mounting plate 11. An air pump 6 is installed on the bottom surface of the mounting plate 11. The top surface of the air pump 6 is connected to an air outlet pipe 3, and the top end of the air outlet pipe 3 extends upward for a certain distance, and the extended end is placed at the center of the inner side of the placement groove 2. When in use, the opening and closing part of the die-casting to be die-cast can be connected to the air outlet pipe 3, and air is blown into the air outlet pipe 3 through the air pump 6. The gas enters the die-casting through the air outlet pipe 3, so that the air tightness of the die-casting can be detected. A pressure gauge 7 for detecting air tightness is provided on the top surface of the sealing box 5, and the sensing end of the pressure gauge 7 is connected to the inner side of the sealing box 5. Support legs 12 for supporting the device are fixedly connected at the four corners of the bottom surface of the mounting plate 11;

[0024] When using the device, place the device at a designated position, place the die casting to be tested inside the placement groove 2, and connect it to the air outlet pipe 3, start the hydraulic rod 8, the hydraulic rod 8 drives the sealing box 5 to descend, and the sealing box 5 is lowered to the inside of the placement groove 2 and contacts with the bottom wall of the placement groove 2, so that the space inside the sealing box 5 can be isolated, then start the air pump 6, the air pump 6 blows air into the die casting through the air outlet pipe 3, and the air tightness of the die casting can be tested by observing the pointer of the barometer 7;

[0025] As a further implementation of this embodiment, Figure 1-4As shown, mounting shells 9 are provided on both sides of the sealing box 5, and one side of the two isolation plates 18 is fixedly connected with an adjustment assembly, and the adjustment assembly is composed of a tooth plate 16, a tooth column 19, a rotating rod 14 and a push plate 17, wherein the tooth plate 16 and the tooth column 19 are arranged inside the mounting shell 9, and one side of the tooth plate 16 is meshed with the tooth column 19, and one end of the rotating rod 14 is fixedly connected to the tooth column 19, so that the rotating rod 14 can be rotated, and the rotating rod 14 drives the tooth column 19 to rotate on the tooth plate 16, one side of the push plate 17 is fixedly connected to one side of the tooth plate 16, and the other side of the push plate 17 is fixedly connected to the isolation plate 18, and sealing rubber blocks 20 are provided on both sides of the isolation plate 18, and the sealing rubber blocks 20 have soft characteristics and are tightly attached to the inner wall of the sealing box 5, and the isolation plate 1 The top surface of 8 is also in close contact with the inner wall of the sealing box 5, thereby increasing the sealing of the space between the two isolation plates 18, and the bottom surface of the isolation plate 18 is parallel to the bottom surface of the sealing box 5, so that when the sealing box 5 is lowered into the placement groove 2, the isolation plate 18 is also in contact with the bottom wall of the placement groove 2, thereby further increasing the sealing of the space between the two isolation plates 18, and the distance between the two mounting shells 9 and the bottom surface of the sealing box 5 is greater than the depth of the placement groove 2, so that when the sealing box 5 is lowered into the inside of the placement groove 2, the two mounting shells 9 will not prevent the sealing box 5 from being placed on the inner side of the placement groove 2, one end of the two rotating rods 14 is fixedly connected with a twisting block 15 for rotating the rotating rods 14, and one side of the sealing box 5 is provided with a perspective window 13 for viewing the inner side of the sealing box 5;

[0026] It is worth noting that the sealing box 5 of the device is provided with a rubber sealing ring at the periphery of the connection between the mounting shell 9 and the rotating rod 14, thereby preventing the air inside the sealing box 5 from flowing out from the connection with the penetrating parts outside the sealing box 5, thereby ensuring the sealing inside the sealing box 5;

[0027] When the device is further used, after the sealing box 5 is lowered to the inside of the placement groove 2, the twisting block 15 is rotated, and the twisting block 15 drives the rotating rod 14 to rotate, and the rotating rod 14 drives the tooth column 19 to rotate. Since the tooth plate 16 is meshed and connected with the tooth column 19, and the position of the rotating rod 14 remains unchanged, when the tooth column 19 rotates, the length of the tooth plate 16 can be extended outward. When the tooth plate 16 is extended, the push plate 17 can be pushed to move to one side, and the sealing plate is driven to move, and the distance between the two sealing plates is adjusted to a distance that matches the size of the die-casting. In this way, the size of the sealed space inside the sealing box 5 can be actively adjusted according to the size and size of the die-casting, which greatly reduces the dilution degree of the outflow air pressure of the die-casting during detection and reduces the detection time.

[0028] Specific working principle: the device is placed at the designated position, the automotive aluminum alloy die-casting to be tested is placed inside the placement groove 2, and connected to the exhaust pipe 3, the hydraulic rod 8 is started, the hydraulic rod 8 drives the sealing box 5 to move down, and the sealing box 5 is moved down to the inner side of the placement groove 2, so that the die-casting is surrounded by a sealed environment, and then the twisting block 15 is rotated, the twisting block 15 drives the rotating rod 14 to rotate, and the rotating rod 14 drives the tooth column 19 to rotate on the tooth plate 16. Since the position of the rotating rod 14 remains unchanged, when the tooth column 19 rotates, it can drive the tooth plate 16 to extend the exposed length. When the tooth column 19 rotates, the tooth plate 16 can be extended to the exposed length. When the plate 16 extends its length, it can push the push plate 17 to move to one side, and the push plate 17 drives the isolation plate 18 to move, and adjusts the distance between the two isolation plates 18 to a distance that matches the size of the die-casting. In this way, the sealing space in the sealing box 5 can be actively adjusted according to the size and volume of the die-casting, which greatly reduces the dilution of the air pressure flowing out of the surface of the die-casting during the subsequent inspection of the die-casting, and reduces the inspection time. By starting the air pump 6, the air pump 6 blows air into the inside of the die-casting through the outlet pipe 3, and by observing the pointer of the pressure gauge 7, the air tightness of the die-casting can be detected.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An air tightness detection device for automotive aluminum alloy die castings, comprising a workbench (1), characterized in that: The top surface of the workbench (1) is provided with a placement groove (2) for placing automobile aluminum alloy die-castings, a sealing box (5) is provided above the placement groove (2), two isolation plates (18) are provided on the inner side of the sealing box (5), and one side of the two isolation plates (18) is fixedly connected with an adjustment component, and the top surface of the sealing box (5) is provided with a barometer (7), and the top surface of the workbench (1) is fixedly installed with a mounting frame (4), and the top surface of the mounting frame (4) is installed with a hydraulic rod (8), and the bottom end of the hydraulic rod (8) extends downward for a distance, and the extended end is fixedly connected to the top surface of the sealing box (5).

2. The air tightness detection device for automotive aluminum alloy die castings according to claim 1 is characterized in that: The adjustment assembly is composed of a tooth plate (16), a tooth column (19), a rotating rod (14) and a push plate (17); one side of the tooth plate (16) is meshedly connected with the tooth column (19); one end of the tooth column (19) is fixedly connected with the rotating rod (14); one side of the push plate (17) is fixedly connected to the tooth plate (16); and the other side of the push plate (17) is fixedly connected to one side of the isolation plate (18).

3. The air tightness detection device for automotive aluminum alloy die castings according to claim 2 is characterized in that: Two twisting blocks (15) are provided on one side of the sealing box (5), and the twisting blocks (15) are fixedly connected to the rotating rod (14).

4. The air tightness detection device for automotive aluminum alloy die castings according to claim 2, characterized in that: The two sides of the sealing box (5) are penetrated by a mounting shell (9), and the tooth plate (16) and the tooth column (19) are arranged inside the sealing box (5).

5. The air tightness detection device for automotive aluminum alloy die castings according to claim 1, characterized in that: A perspective window (13) is provided on one side of the sealing box (5).

6. The air tightness detection device for automotive aluminum alloy die castings according to claim 1, characterized in that: Support rods (10) are fixedly connected at the four corners of the bottom surface of the workbench (1), and the bottom end of the support rods (10) is fixedly connected to a mounting plate (11). An air pump (6) is provided on the bottom surface of the mounting plate (11), and an air outlet pipe (3) is connected to the top surface of the air pump (6), and the top end of the air outlet pipe (3) extends into the inner side of the placement groove (2).

7. The air tightness detection device for automobile aluminum alloy die casting according to claim 6, characterized in that: Support legs (12) are fixedly connected at the four corners of the bottom surface of the mounting plate (11).

Images