Air tightness test tool

Abstract

The utility model discloses an air tightness testing tool which comprises a working table formed by assembling a bottom plate, a supporting rod, a positioning disc and a sealing mechanism, a plurality of L-shaped plates are installed on the top of the positioning disc in a sliding mode, a support is installed on the supporting rod in a rotating mode, the support is connected with the L-shaped plates, and a rotating disc is fixedly installed at the bottom of the support. The top of the bottom plate is slidably provided with an anti-falling cap through an elastic component, and a plurality of inserting holes used for containing the anti-falling cap are formed in the peripheral side of the rotating disc so that the anti-falling cap can be embedded into the inserting holes to limit the rotating disc. According to the utility model, the L-shaped plates, the connecting rods, the support and the rotating disc are assembled to form the air tightness test tool, the distance between the adjacent L-shaped plates is adjustable so as to adapt to workpieces of different shapes and specifications, and compared with a traditional positioning mode that disassembly and reassembly are needed, the air tightness test tool is simple in structure and convenient to operate, greatly shortens the tool adjustment time, accelerates the test process and improves the detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of testing fixtures, specifically an airtightness testing fixture. Background Technology

[0002] In industrial production, airtightness testing is a core step in ensuring product quality and is widely used in fields such as plumbing, gas transmission pipelines, and automotive cooling systems. Due to the diverse structures of pipe fittings (such as tees, crosses, and straight sections) and the wide variety of pipe diameters, rubber positioning seats are usually required to fix the workpiece in order to achieve precise sealing and positioning.

[0003] Existing pipe fitting air tightness testing fixtures mostly use customized rubber positioning seats, which are designed specifically for different types of pipe fittings (such as tees and straight fittings) and pipe diameters. When changing test pipe fittings, operators need to disassemble and replace the positioning seats, which is not only cumbersome and time-consuming, but also prone to inaccurate positioning due to installation errors, affecting the reliability of air tightness test results. Utility Model Content

[0004] The purpose of this utility model is to provide an airtightness testing fixture to solve the problem of the limited adaptability range of the positioning seat in conventional airtightness testing fixtures mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an airtightness testing fixture, comprising a workbench assembled from a base plate, a support rod, a positioning plate, and a sealing mechanism. Several L-shaped plates are slidably mounted on the top of the positioning plate. A bracket is rotatably mounted on the support rod, and the bracket is connected to the several L-shaped plates. A turntable is fixedly mounted on the bottom of the bracket. An anti-detachment cap is slidably mounted on the top of the base plate via an elastic member. Several insertion holes for accommodating the anti-detachment cap are provided on the periphery of the turntable, so that the anti-detachment cap can be embedded in the insertion holes to limit the turntable's position.

[0006] Preferably, a U-shaped block is fixedly installed at the bottom of the L-shaped plate, and a plurality of grooves for accommodating the U-shaped block are provided at the top of the positioning plate. A connecting rod is rotatably installed at the bottom of the U-shaped block, and the other end of the connecting rod is rotatably connected to the bracket.

[0007] Preferably, a rubber pad is fixedly installed on the side wall of the L-shaped plate.

[0008] Preferably, a vertical pole is fixedly installed on the top of the base plate, the anti-detachment cap is slidably installed on the vertical pole, and the elastic member is a spring sleeved on the vertical pole.

[0009] Preferably, the top of the turntable has several through holes.

[0010] Preferably, a U-shaped rod is fixedly installed on the top of the anti-slip cap.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model assembles an airtightness testing fixture using an L-shaped plate, connecting rod, bracket, and turntable. The spacing between adjacent L-shaped plates is adjustable to accommodate workpieces of different shapes and specifications. Compared to traditional positioning methods that require disassembly and reassembly, this design is simple in structure, convenient in operation, significantly reduces fixture adjustment time, speeds up the testing process, and improves testing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0014] Figure 2 This is a cross-sectional three-dimensional structural diagram of the positioning disc of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the base plate, support rod, and positioning plate assembly of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the L-shaped plate and bracket assembly of this utility model;

[0017] Figure 5 This is a three-dimensional structural diagram of the L-shaped plate and U-shaped block assembly of this utility model;

[0018] Figure 6 This is a schematic diagram of the three-dimensional structure of the L-shaped plate and U-shaped block of this utility model.

[0019] In the diagram: 1. Base plate; 2. Support rod; 3. Positioning plate; 4. Sealing mechanism; 5. L-shaped plate; 6. Rubber pad; 7. Turntable; 8. Anti-detachment cap; 9. Upright pole; 10. U-shaped block; 11. Spring; 12. Bracket; 13. Connecting rod. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-6This utility model provides a technical solution: an airtightness testing fixture, including a workbench assembled from a base plate 1, a support rod 2, a positioning plate 3, and a sealing mechanism 4. The sealing mechanism 4 is existing technology, consisting of a cylinder and a rubber plug, used to seal the open end of the workpiece. The principle is not described in detail here. Several L-shaped plates 5 are slidably installed on the top of the positioning plate 3. Rubber pads 6 are fixedly installed on the side walls of the L-shaped plates 5. The advantage of this arrangement is that the rubber pads are soft and can buffer the clamping force, preventing the L-shaped plates 5 from directly squeezing the surface of the workpiece and avoiding scratches, indentations, or deformation. A bracket 12 is rotatably mounted on the support rod 2. The bracket 12 is connected to several L-shaped plates 5. A U-shaped block 10 is fixedly mounted on the bottom of the L-shaped plate 5. The top of the positioning disk 3 is provided with several grooves for accommodating the U-shaped blocks 10. A connecting rod 13 is rotatably mounted on the bottom of the U-shaped block 10. The other end of the connecting rod 13 is rotatably connected to the bracket 12. The purpose of this arrangement is that when the bracket 12 is rotated under force, the connecting rod 13 can drive several L-shaped plates 5 to slide relative to each other on the positioning disk 3.

[0022] A turntable 7 is fixedly installed at the bottom of the bracket 12. An anti-detachment cap 8 is slidably installed on the top of the base plate 1 via an elastic component. A U-shaped rod is fixedly installed on the top of the anti-detachment cap 8. Several insertion holes are provided around the turntable 7 to accommodate the anti-detachment cap 8, so that the anti-detachment cap 8 can be inserted into the insertion holes to limit the turntable 7. The anti-detachment cap 8 can be released by pressing it. The operation steps are simple and intuitive, without the need for complicated tools, which greatly shortens the tooling adjustment time and speeds up the testing process. A vertical rod 9 is fixedly installed on the top of the base plate 1. The anti-detachment cap 8 is slidably installed on the vertical rod 9. The elastic component is a spring 11 sleeved on the vertical rod 9. Several through holes are provided on the top of the turntable 7. The through holes effectively reduce the weight of the turntable 7 and make it convenient for the operator to put their hand into the through holes to drive the turntable 7 to rotate.

[0023] By pressing the anti-disengagement cap 8 until it disengages from the insertion hole of the turntable 7, the turntable 7 is rotated, causing the bracket 12 to rotate. Under the action of the connecting rod 13, the bracket 12 drives several L-shaped plates 5 to move relative to each other on the positioning plate 3, adjusting the spacing between adjacent L-shaped plates 5. After adjusting to the desired position, the anti-disengagement cap 8 is opened, and under the action of the elastic potential energy of the spring 11, the anti-disengagement cap 8 is re-inserted into the insertion hole of the turntable 7 for a limited position. The adjustable spacing between adjacent L-shaped plates 5 allows the fixture to adapt to workpieces of different shapes and specifications. Whether it is a small precision part or a large irregular part, it can be firmly clamped, avoiding frequent tooling changes due to changes in workpiece specifications, reducing usage costs, and improving tooling utilization.

[0024] This application uses an L-shaped plate 5, a connecting rod 13, a bracket 12 and a turntable 7 to assemble an airtightness testing fixture. The spacing between adjacent L-shaped plates 5 is adjustable to accommodate workpieces of different shapes and specifications. Compared with the traditional positioning method that requires disassembly and reassembly, the structure is simple and the operation is convenient, which greatly shortens the fixture adjustment time, speeds up the testing process and improves the testing efficiency.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] 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 fixture, characterized in that: The workbench is assembled from a base plate (1), a support rod (2), a positioning plate (3), and a sealing mechanism (4). Several L-shaped plates (5) are slidably installed on the top of the positioning plate (3). A bracket (12) is rotatably installed on the support rod (2). The bracket (12) is connected to several L-shaped plates (5). A turntable (7) is fixedly installed at the bottom of the bracket (12). An anti-detachment cap (8) is slidably installed on the top of the base plate (1) through an elastic member. Several insertion holes for accommodating the anti-detachment cap (8) are provided on the periphery of the turntable (7) so that the anti-detachment cap (8) can be embedded in the insertion hole to limit the turntable (7).

2. The airtightness testing fixture according to claim 1, characterized in that: The bottom of the L-shaped plate (5) is fixedly installed with a U-shaped block (10), and the top of the positioning plate (3) is provided with several grooves for accommodating the U-shaped block (10). The bottom of the U-shaped block (10) is rotatably installed with a connecting rod (13), and the other end of the connecting rod (13) is rotatably connected to the bracket (12).

3. The airtightness testing fixture according to claim 1, characterized in that: A rubber pad (6) is fixedly installed on the side wall of the L-shaped plate (5).

4. The airtightness testing fixture according to claim 1, characterized in that: A vertical pole (9) is fixedly installed on the top of the base plate (1), and the anti-detachment cap (8) is slidably installed on the vertical pole (9). The elastic component is a spring (11) sleeved on the vertical pole (9).

5. The airtightness testing fixture according to claim 1, characterized in that: The top of the turntable (7) has several through holes.

6. The airtightness testing fixture according to claim 1, characterized in that: A U-shaped rod is fixedly installed on the top of the anti-slip cap (8).

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