Air tightness detection equipment

Abstract

The utility model relates to the technical field of air tightness detection, in particular to air tightness detection equipment which comprises a rack and a main air cylinder, a lower die assembly and a detection die assembly are arranged in the rack, vertical guide columns are fixedly installed on the two sides of an inner cavity of the rack respectively, a slidable lifting mechanism is installed between the opposite guide columns, and the lower die assembly and the detection die assembly are arranged on the main air cylinder. The main air cylinder is fixedly installed on the top of the machine frame, the output end of the main air cylinder is fixedly installed on the upper side of the lifting mechanism, an operator can complete the assembling task more easily without overexerting or adopting complex tools, the labor intensity of the operator is lowered, the working efficiency is improved, and the labor intensity of the operator is lowered. Flange guide sleeves are installed on the two symmetrical sides of the lifting table and are concentric with the guide columns in position, stability and accuracy in the lifting process are guaranteed, the die can be easily aligned in the assembling process, the force exerting requirement of operators is further reduced, and the labor-saving effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically to airtightness testing equipment. Background Technology

[0002] As is well known, existing airtightness testing is used to rigorously assess the airtightness of aircraft, automobile shells, ships, and internal containers. It is a quality control application developed to improve the airtightness of vehicles, aircraft, ships, water storage containers, etc., for the transportation sector, military sector, and basic industries.

[0003] Existing airtightness testing methods include pressure testing, flow testing, leak detection, and acoustic imaging testing. Direct pressure testing is a method that involves injecting nitrogen or compressed air at a certain pressure into the inner cavity of the workpiece through a pressure regulating valve, and then measuring and comparing the pressure values ​​before and after the test. Traditional airtightness testing processes include hot compressing, water injection, and air extraction, each of which requires a lot of time to complete and has low production efficiency. Summary of the Invention

[0004] Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, this utility model provides an airtightness testing device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an airtightness testing device, including a frame and a main cylinder, wherein a lower mold assembly and a testing mold assembly are provided inside the frame, vertical guide columns are fixedly installed on both sides of the inner cavity of the frame, and a slidable lifting mechanism is installed between the opposing guide columns, the main cylinder is fixedly installed on the top of the frame, and the output end of the main cylinder is fixedly installed on the upper side of the lifting mechanism.

[0007] To protect the safety of operators when using the equipment, the present invention is improved by installing protective covers on the three sides of the frame, except for the front side.

[0008] To facilitate vertical adjustment, the present invention is improved by setting the lifting mechanism as a lifting platform.

[0009] To enable the testing mold to be quickly and accurately positioned and installed, the present invention is improved as follows: the lower mold assembly is configured as a lower mold base, the testing mold assembly is configured as an airtightness testing mold, the lower mold base is installed at the bottom of the inner cavity of the frame, and the airtightness testing mold is detachably installed at the bottom of the lifting platform.

[0010] To further improve the accuracy and stability of the detection, the present invention includes the following improvement: a pin is placed on the bottom front side of the lower mold base.

[0011] To improve the guiding performance of the equipment, the present invention includes the following improvement: symmetrical flange guide sleeves are installed on both sides of the front end of the lifting platform.

[0012] To further ensure that the lifting platform remains stable during lifting, the present invention is improved by having the guide column and the guide sleeve be concentric.

[0013] Compared with the prior art, the present invention provides an airtightness testing device, which has the following beneficial effects:

[0014] This airtightness testing equipment has airtightness testing molds installed on the lower mold base and the lifting platform. The lifting platform is driven by a main cylinder to move the mold up and down. The airtightness testing molds can be assembled manually from the front of the equipment, making the assembly task easier for operators without excessive force or the use of complex tools. This not only reduces the labor intensity of operators but also improves work efficiency. Flange guide sleeves are installed on both sides of the lifting platform, concentric with the guide column, ensuring the stability and accuracy of the lifting process. This allows the molds to be easily aligned during assembly, further reducing the force required by operators and achieving a labor-saving effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the structure of this utility model.

[0017] In the diagram: 1. Frame; 2. Lower mold base; 3. Main cylinder; 4. Guide sleeve; 5. Lifting platform; 6. Guide post; 7. Pin. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-2An airtightness testing device includes a frame 1 and a main cylinder 3. The frame 1 houses a lower mold assembly and a testing mold assembly. Vertical guide pillars 6 are fixedly installed on both sides of the inner cavity of the frame 1, and a slidable lifting mechanism is installed between the opposing guide pillars 6. The main cylinder 3 is fixedly installed on the top of the frame 1, and its output end is fixedly installed on the upper side of the lifting mechanism. Protective sealing plates are installed on the three sides of the frame 1, except for the front side. The lifting mechanism is a lifting platform 5, the lower mold assembly is a lower mold base 2, and the testing mold assembly is an airtightness testing mold. The lower mold base 2 is installed at the bottom of the inner cavity of the frame 1, and the airtightness testing mold is detachably installed at the bottom of the lifting platform 5. Symmetrical flange guide sleeves 4 are installed on both sides of the front end of the lifting platform 5, and the guide pillars 6 and guide sleeves 4 are concentric.

[0020] During use, the airtightness mold to be tested is assembled onto the lifting platform 5 and the lower mold base 2. The testing mold is detachable, so different molds can be replaced according to different workpiece types or testing requirements. Due to the open design of the front side of the frame 1, the operator can easily install the mold from the front side, place the airtightness workpiece to be tested on the mold, and ensure that the workpiece is accurately and stably positioned. Start the equipment, and the main cylinder 3 starts to work. Its output end pushes the lifting platform 5 downward. The flange guide sleeve 4 and the guide column 6 remain concentric. Under the guidance of the guide column 6, the lifting platform 5 slides smoothly along the guide column 6 to ensure the stability and accuracy of the lifting process. The lifting platform 5 drives the upper mold to slide together until the upper mold and the lower mold are in close contact to form a closed testing chamber. Then the equipment can perform airtightness testing. By injecting gas into the mold and monitoring the change in gas pressure, it is determined whether the airtightness of the workpiece to be tested is qualified.

[0021] In actual use, it is necessary to ensure that the mold does not move or shift during the inspection process. In order to meet the above requirements, in this embodiment, a pin 7 is placed on the bottom front side of the lower mold base 2.

[0022] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airtightness testing device, comprising a frame (1) and a main cylinder (3), characterized in that: The frame (1) is provided with a lower mold assembly and a detection mold assembly. Vertical guide pillars (6) are fixedly installed on both sides of the inner cavity of the frame (1). A sliding lifting mechanism is installed between the opposite guide pillars (6). The main cylinder (3) is fixedly installed on the top of the frame (1). The output end of the main cylinder (3) is fixedly installed on the upper side of the lifting mechanism. The lifting mechanism is configured as a lifting platform (5); The lower mold assembly is configured as a lower mold base (2), the detection mold assembly is configured as an airtightness detection mold, the lower mold base (2) is installed at the bottom of the inner cavity of the frame (1), and the airtightness detection mold is detachably installed at the bottom of the lifting platform (5).

2. The airtightness testing device according to claim 1, characterized in that: The frame (1) is covered with protective plates on the three sides except the front side.

3. The airtightness testing device according to claim 2, characterized in that: A pin (7) is placed on the bottom front side of the lower mold base (2).

4. The airtightness testing device according to claim 3, characterized in that: Symmetrical flange guide sleeves (4) are installed on both sides of the front end of the lifting platform (5).

5. The airtightness testing device according to claim 4, characterized in that: The guide post (6) and the guide sleeve (4) are concentric.

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