A core body airtightness detection device

Abstract

This utility model relates to the field of industrial testing equipment technology, and in particular to a core airtightness testing device, comprising a base plate, with side plates fixedly connected to the upper left and upper right sides of the base plate. A connecting plate is fixedly connected to the middle of the inner surfaces of the two side plates. Limiting grooves are formed on the upper left and upper right sides of the connecting plate. An adjustment device is fixedly connected to the left end of the left side plate. A fixing frame is fixedly connected to the middle of the front end and the middle of the rear end of the base plate. In this core airtightness testing device, the adjusting device uses a rotary motor to drive a bidirectional threaded rod, which in turn moves the threaded connecting block and clamping assembly laterally, adapting to cores of different widths. The clamping assembly uses an electric telescopic rod to push an arc-shaped clamping plate, flexibly adjusting the clamping force and range to meet the fixing needs of cores of various sizes and shapes, avoiding the need for custom-made fixtures, reducing costs, and improving changeover efficiency.

Description

Technical Field

[0001] This utility model relates to the field of industrial testing equipment technology, and in particular to a core airtightness testing device. Background Technology

[0002] This device specifically falls under the category of core airtightness testing equipment and is mainly used for airtightness testing of various cores in the fields of automotive parts, electronic components, and aerospace.

[0003] In industrial production, the airtightness of the core is crucial to product performance and safety. However, traditional airtightness testing has many shortcomings: 1. The clamping structure of existing testing equipment is mostly fixed. Special fixtures need to be customized for cores of different sizes and shapes, which is costly and time-consuming to replace, and cannot meet the needs of multi-variety small-batch production; 2. Relying on soap water application and visual observation of bubbles to judge leakage is slow and small leaks are difficult to detect, which can easily lead to missed detection or misjudgment. Utility Model Content

[0004] The main objective of this invention is to provide a core airtightness testing device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A core airtightness testing device includes a base plate, with side plates fixedly connected to the upper left and upper right sides of the base plate. A connecting plate is fixedly connected to the middle of the inner surfaces of the two side plates. Limiting grooves are provided on the upper left and upper right sides of the connecting plate. An adjustment device is fixedly connected to the left end of the left side plate. A fixing frame is fixedly connected to the middle of the front and rear ends of the base plate. A testing device is fixedly connected to the middle of the upper end of the fixing frame.

[0007] The adjustment device includes a rotary motor. The output end of the rotary motor is fixedly connected to a bidirectional threaded rod through the left side plate. The left and right sides of the outer surface of the bidirectional threaded rod are threaded with threaded connecting blocks. The lower middle of the two threaded connecting blocks is fixedly connected with a limit block. The upper end of the two threaded connecting blocks is fixedly connected with a clamping assembly. The right end of the rotary motor is fixedly connected to the left end of the left side plate.

[0008] Preferably, the two side plates are arranged in a left-right mirror image, and the right end of the bidirectional threaded rod is movably connected to the left end of the right side plate via a bearing.

[0009] Preferably, the two limiting blocks are respectively disposed in two limiting grooves.

[0010] Preferably, the clamping assembly includes a main board base, with bidirectional threaded rods at both the upper front and upper rear portions of the main board base. A connecting seat is snapped onto the upper end of the main board base. Mounting plates are fixedly connected to the lower front and lower rear portions of the connecting seat. Screws are inserted through the upper ends of both mounting plates. A connecting ring block is fixedly connected to the inner wall of the connecting seat. Electric telescopic rods are fixedly connected to the upper and lower outer surfaces of the connecting ring block. Arc-shaped clamping plates are fixedly connected to the output ends of both electric telescopic rods through the connecting ring block. The lower end of the main board base is fixedly connected to the upper end of the threaded connecting block.

[0011] Preferably, the inner wall of the connecting seat is provided with a mounting hole, and the lower electric telescopic rod is embedded in the mounting hole.

[0012] Preferably, the two screws pass through the two mounting plates and are threaded into the two threaded holes respectively, and the connector is snapped onto the upper end of the main board base by the two mounting plates and the two screws.

[0013] Preferably, the detection device includes a gas source pipe, a regulating valve and a solenoid valve are movably installed on the lower outer surface of the gas source pipe, with the regulating valve located above the solenoid valve, an inflation pipe is fixedly connected to the lower end of the gas source pipe, a pressure sensor is fixedly installed on the lower outer surface of the inflation pipe, a pressure display instrument is electrically connected to the outer surface of the pressure sensor, and the outer surface of the gas source pipe is fixedly connected to the upper middle part of the fixed frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the rotary motor in the adjustment device drives the bidirectional threaded rod, which in turn moves the threaded connecting block and the clamping assembly laterally, thus adapting to cores of different widths. The electric telescopic rod in the clamping assembly pushes the arc-shaped clamping plate, which can flexibly adjust the clamping force and range to meet the fixing requirements of cores of various sizes and shapes, avoids the need for custom-made fixtures, reduces costs and improves changeover efficiency.

[0016] In this invention, the detection device precisely controls the inflation pressure through the air source pipe and the electromagnetic valve. The pressure sensor monitors in real time and the data is fed back through the pressure display instrument. Compared with the soap water detection method, it can accurately detect minute leaks. The digital detection process reduces interference from human factors, ensures reliable detection results, and improves detection speed and accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a core airtightness testing device according to the present invention;

[0018] Figure 2 This is a schematic diagram showing the connection and disassembly of the adjustment device of the core airtightness detection device of this utility model;

[0019] Figure 3 This is a schematic diagram showing the connection and disassembly of the clamping assembly of a core airtightness testing device according to the present invention;

[0020] Figure 4 This is a schematic diagram showing the connection and disassembly of the detection device of the core airtightness detection device of this utility model.

[0021] In the diagram: 1. Base plate; 2. Side plate; 3. Connecting plate; 4. Limiting groove; 5. Adjusting device; 6. Fixing frame; 7. Detection device; 51. Rotary motor; 52. Bidirectional threaded rod; 53. Threaded connecting block; 54. Limiting block; 55. Clamping assembly; 551. Main board base; 552. Threaded hole; 553. Connecting seat; 554. Mounting plate; 555. Screw; 556. Connecting ring block; 557. Electric telescopic rod; 558. Arc-shaped clamping plate; 71. Air source pipe; 72. Adjusting valve; 73. Solenoid valve; 74. Inflation pipe; 75. Pressure sensor; 76. Pressure display instrument. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figure 1-4 This utility model provides a technical solution:

[0026] A core airtightness testing device includes a base plate 1, with side plates 2 fixedly connected to the upper left and upper right sides of the base plate 1. A connecting plate 3 is fixedly connected to the middle of the inner sides of the two side plates 2. Limiting grooves 4 are provided on the upper left and upper right sides of the connecting plate 3. An adjustment device 5 is fixedly connected to the left end of the left side plate 2. A fixing frame 6 is fixedly connected to the middle of the front and rear ends of the base plate 1. A testing device 7 is fixedly connected to the middle of the upper end of the fixing frame 6.

[0027] In this embodiment, the adjusting device 5 includes a rotary motor 51. The output end of the rotary motor 51 is fixedly connected to a bidirectional threaded rod 52 through the left side plate 2. Threaded connecting blocks 53 are threadedly connected to the left and right sides of the outer surface of the bidirectional threaded rod 52. Limiting blocks 54 are fixedly connected to the lower middle of the two threaded connecting blocks 53. Clamping components 55 are fixedly connected to the upper ends of the two threaded connecting blocks 53. The right end of the rotary motor 51 is fixedly connected to the left end of the left side plate 2. The two side plates 2 are mirror images of each other. The right end of the bidirectional threaded rod 52 is movably connected to the left end of the right side plate 2 via a bearing. The two limiting blocks 54 are respectively disposed in two limiting grooves 4. The clamping component 55 includes a main board base 551. The bidirectional threaded rod 52 is provided at the front and rear of the upper end of the main board base 551. A connecting seat 55 is snapped into the upper end of the main board base 551. 3. Mounting plates 554 are fixedly connected to the lower front and lower rear parts of the connecting seat 553. Screws 555 are inserted into the upper ends of the two mounting plates 554. A connecting ring block 556 is fixedly connected to the inner wall of the connecting seat 553. An electric telescopic rod 557 is fixedly connected to the upper and lower outer surfaces of the connecting ring block 556. An arc-shaped clamping plate 558 is fixedly connected to the output ends of the two electric telescopic rods 557 through the connecting ring block 556. The lower end of the main board seat 551 is fixedly connected to the upper end of the threaded connecting block 53. The inner wall of the connecting seat 553 has a mounting hole, and the lower electric telescopic rod 557 is embedded in the mounting hole. Two screws 555 pass through the two mounting plates 554 and are threaded into the two threaded holes 552 respectively. The connecting seat 553 is snapped onto the upper end of the main board seat 551 by the two mounting plates 554 and the two screws 555.

[0028] Through the above scheme: when the adjusting device 5 and the clamping assembly 55 are working, the rotary motor 51 starts, driving the bidirectional threaded rod 52 to rotate. Because the threaded connecting blocks 53 are respectively threadedly engaged with the left and right ends of the bidirectional threaded rod 52, and the limiting block 54 is limited in the limiting groove 4, the two threaded connecting blocks 53 can move laterally in opposite directions, driving the clamping assembly 55 to adjust the spacing to adapt to cores of different widths. When the core needs to be clamped, the connecting seat 553 is fixed to the main board base 551 through the mounting plate 554 and screws 555. The electric telescopic rod 557 is started, and its output end pushes the arc-shaped clamping plate 558 to move towards the core. The clamping force and position are precisely adjusted according to the shape and size of the core to complete the clamping. When disassembling or replacing the connecting seat 553, the screws 555 are unscrewed to separate the connecting seat 553 from the upper end of the main board base 551, which facilitates maintenance and replacement of clamping structures of different specifications and meets diverse testing needs.

[0029] In this embodiment, the detection device 7 includes a gas source pipe 71. A regulating valve 72 and a solenoid valve 73 are movably installed on the lower part of the outer surface of the gas source pipe 71, with the regulating valve 72 located above the solenoid valve 73. An inflation pipe 74 is fixedly connected to the lower end of the gas source pipe 71. A pressure sensor 75 is fixedly installed on the lower part of the outer surface of the inflation pipe 74. A pressure display instrument 76 is electrically connected to the outer surface of the pressure sensor 75. The outer surface of the gas source pipe 71 is fixedly connected to the upper middle part of the fixed frame 6.

[0030] According to the above scheme: during testing, the gas source is delivered through the gas source pipe 71, and the gas pressure is pre-adjusted by the regulating valve 72. When the test is started, the solenoid valve 73 is opened, and the gas is filled into the core through the inflation pipe 74. The pressure sensor 75 monitors the pipeline pressure in real time and transmits the data to the pressure display instrument 76. After the test is completed, the solenoid valve 73 is closed to cut off the gas source. The operator judges whether the airtightness of the core meets the standard by observing the change in the value of the pressure display instrument 76.

[0031] It should be noted that this utility model is a core airtightness testing device. In use, firstly, the rotary motor 51 is started, driving the bidirectional threaded rod 52 to rotate, causing the two threaded connecting blocks 53 to move the clamping assembly 55 laterally. Through the cooperation of the limiting block 54 and the limiting groove 4, the distance is adjusted to a suitable level, and the core is placed between the clamping assemblies 55. Subsequently, the electric telescopic rod 557 in the clamping assembly 55 extends and pushes the arc-shaped clamping plate 558 to clamp the core. If it is necessary to change the clamping specifications or if there is damage and wear, the connecting seat 553 can be disassembled by unscrewing the screw 555 for replacement. After clamping is completed, the testing device 7 is turned on. The air source is delivered through the air source pipe 71. The pressure is first set by the regulating valve 72, and then controlled by the solenoid valve 73. The gas is filled into the core through the inflation pipe 74. The pressure sensor 75 monitors the pipeline pressure in real time and transmits the data to the pressure display instrument 76. If the pressure drops beyond the set threshold, it is determined that there is a leak in the core, the test is over, the solenoid valve 73 is closed, the core is removed, and one test cycle is completed.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A core airtightness testing device, comprising a base plate (1), characterized in that: The upper left and upper right sides of the base plate (1) are fixedly connected to side plates (2), and the middle of the inner sides of the two side plates (2) are fixedly connected to a connecting plate (3). The upper left and upper right sides of the connecting plate (3) are provided with limit grooves (4). The left end of the left side plate (2) is fixedly connected to an adjustment device (5). The middle of the front end and the middle of the rear end of the base plate (1) are fixedly connected to a fixing frame (6). The middle of the upper end of the fixing frame (6) is fixedly connected to a detection device (7). The adjustment device (5) includes a rotary motor (51). The output end of the rotary motor (51) is fixedly connected to a bidirectional threaded rod (52) through the left side plate (2). The left and right sides of the outer surface of the bidirectional threaded rod (52) are threadedly connected to threaded connecting blocks (53). The lower middle part of the two threaded connecting blocks (53) is fixedly connected to a limit block (54). The upper end of the two threaded connecting blocks (53) is fixedly connected to a clamping assembly (55). The right end of the rotary motor (51) is fixedly connected to the left end of the left side plate (2).

2. The core airtightness testing device according to claim 1, characterized in that: The two side plates (2) are arranged in a left-right mirror image, and the right end of the bidirectional threaded rod (52) is movably connected to the left end of the right side plate (2) through a bearing.

3. The core airtightness testing device according to claim 1, characterized in that: The two limiting blocks (54) are respectively disposed in the two limiting grooves (4).

4. The core airtightness testing device according to claim 1, characterized in that: The clamping assembly (55) includes a main board base (551). The upper front and upper rear of the main board base (551) are provided with bidirectional threaded rods (52). The upper end of the main board base (551) is snapped with a connecting seat (553). The lower front and lower rear of the connecting seat (553) are fixedly connected with mounting plates (554). The upper ends of the two mounting plates (554) are each inserted with screws (555). The inner wall of the connecting seat (553) is fixedly connected with a connecting ring block (556). The upper and lower outer surfaces of the connecting ring block (556) are fixedly connected with electric telescopic rods (557). The output ends of the two electric telescopic rods (557) are fixedly connected to arc-shaped clamping plates (558) through the connecting ring block (556). The lower end of the main board base (551) is fixedly connected to the upper end of the threaded connecting block (53).

5. The core airtightness testing device according to claim 4, characterized in that: The inner wall of the connecting seat (553) is provided with an installation hole, and the lower electric telescopic rod (557) is embedded in the installation hole.

6. The core airtightness testing device according to claim 4, characterized in that: The two screws (555) pass through the two mounting plates (554) and are threaded into the two threaded holes (552). The connector (553) is snapped onto the upper end of the main board base (551) by the two mounting plates (554) and the two screws (555).

7. The core airtightness testing device according to claim 1, characterized in that: The detection device (7) includes a gas source pipe (71). A regulating valve (72) and a solenoid valve (73) are movably installed on the lower part of the outer surface of the gas source pipe (71), and the regulating valve (72) is located on the upper side of the solenoid valve (73). An inflation pipe (74) is fixedly connected to the lower end of the gas source pipe (71). A pressure sensor (75) is fixedly installed on the lower part of the outer surface of the inflation pipe (74). A pressure display instrument (76) is electrically connected to the outer surface of the pressure sensor (75). The outer surface of the gas source pipe (71) is fixedly connected to the upper middle part of the fixed frame (6).

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