Air tightness detection device for aluminum alloy casting

Abstract

The utility model discloses an aluminum alloy casting air tightness detection device, which comprises a leak detection mechanism and a lifting mechanism, the leak detection mechanism comprises a base, the top of the base is fixedly connected with a box body and a vertical plate respectively, one side of the vertical plate is fixedly provided with an air tightness leak detector, and a detection port of the air tightness leak detector is communicated with a connecting pipe. The lifting mechanism comprises a motor fixedly installed on the vertical plate, an output shaft of the motor is fixedly connected with a two-way lead screw, two sections of opposite threads of the two-way lead screw are both in threaded connection with sliding blocks, one sides of the sliding blocks are rotationally connected with connecting arms, one sides of the connecting arms are rotationally connected with a cover plate, and the cover plate is fixedly connected with the vertical plate. And one side of the cover plate is movably connected with the vertical plate. According to the utility model, the lifting mechanism is arranged on the leak detection mechanism, so that after an aluminum alloy casting is placed in the box body, the bidirectional screw rod can be driven to rotate anticlockwise by starting the motor, so that after the two sliding blocks are close to each other, the cover plate can be driven by the connecting arm to be pressed on the box body, and the working efficiency during detection is improved.

Description

Technical Field

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

[0002] As is known to all, since aluminum alloy die castings are usually used in automobile engine systems and are subjected to certain working pressures during normal use, they are required to have good sealing properties. In the prior art, when performing air tightness testing on aluminum alloy die castings, a connecting plate is used to drive a pressure block to fix the castings, and a rubber pad and a combination of multiple rubber rings are used to improve the sealing properties of the castings during testing. A patent with a publication number of CN214843817U published by the China Patent Network discloses an air tightness testing device for aluminum alloy die castings for automobiles, comprising a base, a carrier plate is fixedly connected to the top of the base, and the top of the carrier plate is A limit shaft is fixedly connected, and the outer side of the limit shaft is slidably connected to the limit plate. In the utility model, the rubber pad, the limit ring, the first rubber ring, the second rubber ring, and the third rubber ring are arranged, and the die casting can be limited and fixed by the pressing block to ensure stability during the detection process. At the same time, the die casting can be sealed under the interaction of the rubber pad, the first rubber ring, the second rubber ring and the third rubber ring to ensure that the die casting will not leak during the test, thereby improving the detection accuracy. The display screen of the airtightness leak detector displays the precise leakage amount of this test, and automatically determines whether the airtightness of the product to be tested is qualified without any detection error.

[0003] However, when the aluminum alloy die-casting air tightness detection device in the prior art is in use, the actions of the connecting plate driving the pressure block to press the casting and forming a seal between the connecting plate and the limit ring require manual rotation of the screw to complete, which increases the manpower consumption when using the detection device, and is not conducive to improving the work efficiency during detection. Utility Model Content

[0004] The utility model aims to provide an aluminum alloy casting air tightness detection device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for detecting air tightness of aluminum alloy castings comprises a leak detection mechanism and a lifting mechanism. The leak detection mechanism comprises a base, the top of the base is respectively fixedly connected to a box body and a vertical plate, an air tightness leak detector is fixedly installed on one side of the vertical plate, a detection port of the air tightness leak detector is connected to a connecting pipe, one end of the connecting pipe passes through the base and is connected to the interior of the box body; the lifting mechanism comprises a motor fixedly installed on the vertical plate, an output shaft of the motor is fixedly connected to a bidirectional screw rod, two opposite threads of the bidirectional screw rod are threadedly connected to sliders, one side of the slider is rotatably connected to a connecting arm, one side of the connecting arm is rotatably connected to a cover plate, and one side of the cover plate is movably connected to the vertical plate.

[0007] Preferably, a baffle is fixedly connected to the top of the base, a slide groove is provided on one side adjacent to the baffle and the vertical plate, a movable block is slidably connected to the inner side wall of the slide groove, and one side of the movable block is fixedly connected to the cover plate.

[0008] Preferably, a rubber pad is fixedly connected to the inner side wall of the box body, and a rubber block is fixedly connected to the bottom of the cover plate.

[0009] Preferably, a pressing block is evenly and fixedly connected to the bottom of the cover plate, and the bottom of the pressing block passes through the interior of the rubber block.

[0010] Preferably, the bottom of the base is evenly and fixedly connected with legs.

[0011] Preferably, a protrusion is fixedly connected to the bottom end of the leg.

[0012] Preferably, one end of the bidirectional lead screw away from the motor is rotatably connected to the baffle via a bearing.

[0013] By adopting the above technical solution, the rotation load of the bidirectional screw can be reduced.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] The air tightness detection device for aluminum alloy castings is provided with a lifting mechanism on the leak detection mechanism, so that after the aluminum alloy casting is placed in the box, the bidirectional lead screw can be driven to rotate counterclockwise by starting the motor, so that after the two sliders are close to each other, the cover plate can be driven to be pressed against the box through the connecting arm; through the above arrangement, the problem of increased manpower consumption caused by the need to manually rotate the screw during detection in the prior art is solved, thereby improving the work efficiency during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the air tightness detection device for aluminum alloy castings of the utility model;

[0017] Figure 2It is an enlarged schematic diagram of area A of the structural schematic diagram of the aluminum alloy casting air tightness detection device of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the lifting mechanism in the aluminum alloy casting air tightness detection device of the utility model;

[0019] Figure 4 It is an enlarged schematic diagram of area B of the structural schematic diagram of the lifting mechanism in the aluminum alloy casting air tightness detection device of the utility model.

[0020] In the figure: 1. leak detection mechanism; 10. base; 11. box; 12. vertical plate; 13. airtightness leak detector; 14. connecting pipe; 15. supporting leg; 16. bump; 17. rubber pad; 18. baffle; 2. lifting mechanism; 20. motor; 21. bidirectional screw rod; 22. slider; 23. connecting arm; 24. cover plate; 25. rubber block; 26. pressure block; 27. movable block; 28. slide groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 A device for detecting air tightness of aluminum alloy castings comprises a leak detection mechanism 1 and a lifting mechanism 2. The leak detection mechanism 1 comprises a base 10. The top of the base 10 is respectively fixedly connected with a box body 11 and a vertical plate 12. An air tightness leak detector 13 is fixedly installed on one side of the vertical plate 12. The detection port of the air tightness leak detector 13 is connected with a connecting pipe 14. One end of the connecting pipe 14 passes through the base 10 and is connected with the interior of the box body 11. The lifting mechanism 2 comprises a motor 20 fixedly installed on the vertical plate 12. The output shaft of the motor 20 is fixedly connected with a bidirectional screw rod 21. Two opposite threads of the bidirectional screw rod 21 are both threadedly connected with a slider 22. One side of the slider 22 is rotatably connected with a connecting arm 23. One side of the connecting arm 23 is rotatably connected with a cover plate 24. One side of the cover plate 24 is movably connected with the vertical plate 12.

[0023] The present invention provides an air tightness detection device for aluminum alloy castings by arranging a lifting mechanism 2 on a leak detection mechanism 1, so that after the aluminum alloy casting is placed in a box 11, a bidirectional screw rod 21 can be driven to rotate counterclockwise by starting a motor 20, so that after two sliders 22 are close to each other, a cover plate 24 can be driven to be pressed against the box 11 by a connecting arm 23; through the above arrangement, the problem of increased manpower consumption caused by manually rotating the screw rod during detection in the prior art is solved, thereby improving the work efficiency during detection.

[0024] Specifically, the top of the base 10 is fixedly connected with a baffle 18, and a slide groove 28 is provided on one side adjacent to the baffle 18 and the vertical plate 12. The inner side wall of the slide groove 28 is slidably connected with a movable block 27, and one side of the movable block 27 is fixedly connected to the cover plate 24. The above design can keep the cover plate 24 stable when moving up and down.

[0025] Specifically, the inner wall of the box body 11 is fixedly connected with a rubber pad 17, and the bottom of the cover plate 24 is fixedly connected with a rubber block 25. With the above design, after the aluminum alloy casting enters the box body 11, its outer side can be tightly attached to the rubber pad 17, and after the cover plate 24 is closed on the box body 11, the rubber block 25 can be tightly attached to the rubber pad 17, so that the inside of the box body 11 can be in a sealed state.

[0026] Specifically, the bottom of the cover plate 24 is evenly fixedly connected with a pressing block 26, and the bottom of the pressing block 26 penetrates the inside of the rubber block 25. With the above design, after the cover plate 24 is closed, the pressing block 26 can be driven to press the aluminum alloy casting against the inner bottom wall of the box body 11, so that the inside of the aluminum alloy casting maintains good sealing.

[0027] Specifically, the bottom of the base 10 is evenly and fixedly connected with the legs 15. The above design can improve the stability of the base 10 when it is placed and used.

[0028] Specifically, the bottom end of the leg 15 is fixedly connected with a protrusion 16. The above design can further improve the stability of the leg 15 when in use.

[0029] Specifically, the end of the bidirectional screw 21 away from the motor 20 is rotatably connected to the baffle 18 through a bearing. The above design can reduce the rotation load of the bidirectional screw 21.

[0030] It should be noted that the model of the airtightness leak detector 13 is XF-1ZY.

[0031] The working steps of this scheme are summarized and sorted out according to the above technical scheme: when in use, after the aluminum alloy casting is placed in the box body 11, the bidirectional screw rod 21 can be driven by the motor 20 to rotate counterclockwise, so that the two sliders 22 can move closer to each other, and then the connecting arm 23 can drive the cover plate 24 to move downward on the vertical plate 12 under the action of the slider 22 and seal the box body 11, and after the cover plate 24 is closed, it can drive the pressure block 26 to press the aluminum alloy casting against the inner bottom wall of the box body 11, so that the inside of the aluminum alloy casting maintains good sealing. At this time, the airtightness leak detector 13 can detect the airtightness of the inside of the aluminum alloy casting through the connecting pipe 14; after the detection is completed, the cover plate 24 can be moved upward by driving the bidirectional screw rod 21 to rotate clockwise by the motor 20, so that the aluminum alloy casting can be taken out of the box body 11.

[0032] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An aluminum alloy casting air tightness detection device, characterized in that: It includes a leak detection mechanism and a lifting mechanism, the leak detection mechanism includes a base, the top of the base is fixedly connected to a box body and a vertical plate respectively, one side of the vertical plate is fixedly installed with an airtightness leak detector, the detection port of the airtightness leak detector is connected with a connecting pipe, one end of the connecting pipe passes through the base and is connected with the interior of the box body, the lifting mechanism includes a motor fixedly installed on the vertical plate, the output shaft of the motor is fixedly connected with a bidirectional screw rod, two opposite threads of the bidirectional screw rod are threadedly connected with sliders, one side of the slider is rotatably connected with a connecting arm, one side of the connecting arm is rotatably connected with a cover plate, one side of the cover plate is movably connected with the vertical plate.

2. The air tightness detection device for aluminum alloy castings according to claim 1, characterized in that: The top of the base is fixedly connected with a baffle, and a sliding groove is provided on one side adjacent to the baffle and the vertical plate. The inner side wall of the sliding groove is slidably connected with a movable block, and one side of the movable block is fixedly connected with the cover plate.

3. The air tightness detection device for aluminum alloy castings according to claim 1, characterized in that: The inner side wall of the box body is fixedly connected with a rubber pad, and the bottom of the cover plate is fixedly connected with a rubber block.

4. The air tightness detection device for aluminum alloy castings according to claim 3 is characterized in that: The bottom of the cover plate is evenly and fixedly connected with a pressing block, and the bottom of the pressing block runs through the interior of the rubber block.

5. The air tightness detection device for aluminum alloy castings according to claim 2, characterized in that: The bottom of the base is evenly and fixedly connected with supporting legs.

6. The device for detecting air tightness of aluminum alloy castings according to claim 5, characterized in that: The bottom end of the supporting leg is fixedly connected with a protrusion.

7. The air tightness detection device for aluminum alloy castings according to claim 1, characterized in that: One end of the bidirectional lead screw away from the motor is rotatably connected to the baffle through a bearing.

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