An air tightness detection tool

Abstract

The utility model discloses a kind of air tightness detection tool, comprising: bottom plate, bottom plate is set with work platform and drive platform from bottom to top by support, drive platform is provided with drive cylinder, the piston rod of drive cylinder is connected with work platform, work platform is outwardly provided with protruding mounting portion, protruding mounting portion is provided with hard shaft gas pipe, the bottom of hard shaft gas pipe is provided with gas head connecting block, rubber gas head is set in gas head mounting hole, rubber gas head is provided with gas blowing port, hard shaft gas pipe is provided with elastic push component above gas head connecting block, the lower end of elastic push component is pressed on gas head connecting block, the upper end of elastic push component is pressed on the protruding mounting portion of work platform.The air tightness detection tool of the utility model is mainly used for the air tightness detection of electrical controller.

Description

Technical Field

[0001] This utility model relates to a testing fixture, specifically a fixture for testing the airtightness of various electrical controllers. Background Technology

[0002] Currently, traditional airtightness testing fixtures all use rigid pressing methods, which can easily lead to deformation of the controller housing or even poor sealing during actual testing. In addition, traditional airtightness testing fixtures are specifically designed for a particular product model; that is, one fixture can only test one model, and different models require different corresponding airtightness testing fixtures. This necessitates significant equipment investment, thereby increasing manufacturing costs. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an airtightness testing fixture that adopts a flexible pressing method.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an airtightness testing fixture, comprising: a base plate, a drive platform mounted on the base plate via a bracket, a working platform slidably mounted on the bracket between the drive platform and the base plate, a drive cylinder mounted on the drive platform, the piston rod of the drive cylinder passing through the drive platform and connected to the working platform via a floating joint, an outwardly extending mounting part provided on the working platform, and a vertically arranged rigid shaft air guide pipe passing through the extending mounting part. A gas head connecting block is provided at the bottom. The gas head connecting block has an air blowing hole that communicates with the rigid shaft air guide tube. The gas head connecting block has a gas head mounting hole that communicates with the air blowing hole on its bottom surface. A rubber gas head is provided in the gas head mounting hole. The rubber gas head has an air blowing port that communicates with the air blowing hole of the gas head connecting block. An elastic pushing component is sleeved on the rigid shaft air guide tube above the gas head connecting block. The lower end of the elastic pushing component presses against the gas head connecting block, and the upper end of the elastic pushing component presses against the extended mounting part of the work platform.

[0005] As a preferred embodiment, in the aforementioned airtightness testing fixture, the base plate is also provided with a replaceable product positioning fixture.

[0006] As a preferred embodiment, in the aforementioned airtightness testing fixture, the product positioning fixture includes: a product placement plate disposed on a base plate, and a pair of L-shaped positioning blocks arranged opposite to each other on the product placement plate.

[0007] As a preferred embodiment, in the aforementioned airtightness testing fixture, a pair of L-shaped positioning blocks are provided with a guide slope at their product inlet, such that the opening between the pair of L-shaped positioning blocks gradually increases outward.

[0008] As a preferred embodiment, in the aforementioned airtightness testing fixture, the drive platform is further equipped with a solenoid valve for switching the air path.

[0009] As a preferred embodiment, in the aforementioned airtightness testing fixture, the rigid shaft air guide tube is specifically configured as follows: the rigid shaft air guide tube is mounted on the extended mounting part of the working platform via a linear bearing, a clamp is provided above the linear bearing on the rigid shaft air guide tube, and the upper end of the elastic pushing component presses against the extended mounting part of the working platform via the linear bearing.

[0010] As a preferred embodiment, in the aforementioned airtightness testing fixture, the support includes at least three columns, with the bottom ends of the columns mounted on a base plate and the top ends of the columns mounted on a drive platform.

[0011] As a preferred embodiment, in the aforementioned airtightness testing fixture, the working platform is movably mounted on the columns via linear bearings that correspond one-to-one with the columns. Specifically, the working platform is equipped with linear bearings that correspond one-to-one with the columns, and the columns are movably mounted within the corresponding linear bearings.

[0012] As a preferred embodiment, in the aforementioned airtightness testing fixture, the air head connecting block is specifically configured as follows: the rigid shaft air guide tube has a lower connecting threaded hole at its bottom that communicates with the inner hole of the rigid shaft air guide tube; the air head connecting block is provided with a columnar threaded connecting part corresponding to the lower connecting threaded hole; the air blowing hole passes through the columnar threaded connecting part; and the columnar threaded connecting part is threadedly connected to the lower connecting threaded hole of the rigid shaft air guide tube.

[0013] As a preferred embodiment, in the aforementioned airtightness testing fixture, the gel-like air head is a rubber air head, and the elastic pushing component is a spring.

[0014] The beneficial effects of this utility model are: 1. This utility model, by adding a floating joint to the piston rod of the drive cylinder and connecting it to the working platform, enables the piston rod end of the drive cylinder to achieve ±2° deflection self-adaptation. The bottom of the air head adapter block is embedded with a conical rubber air head, which makes the connection between the rigid shaft air guide tube and the electrical controller a flexible pressing method, so that the controller will not deform or have poor sealing due to detection.

[0015] 2. This utility model improves the applicability of the airtightness testing device and reduces manufacturing costs by setting a replaceable product positioning fixture on the base plate, thereby allowing the corresponding specifications of products to be tested by changing the product positioning fixture.

[0016] 3. This utility model makes product installation more convenient by setting a guide slope at the product inlet of a pair of L-shaped positioning blocks, so that the opening between the pair of L-shaped positioning blocks gradually increases outward.

[0017] 4. By placing the solenoid valve used for switching the air path on the drive platform, this utility model makes the entire air path drive device neater.

[0018] 5. The rigid shaft air guide tube of this utility model is set on the working platform by a linear bearing and a clamp is set above the linear bearing for limiting the position, which makes the installation of the rigid shaft air guide tube very simple and convenient.

[0019] 6. The working platform described in this utility model is mounted on the column using linear bearings, making the installation of the working platform very simple and convenient.

[0020] 7. This utility model makes the connection between the air head connecting block and the hard shaft air guide tube very simple and convenient by opening a lower connecting threaded hole at the bottom of the hard shaft air guide tube and setting a columnar threaded connecting part on the air head connecting block corresponding to the lower connecting threaded hole. Attached Figure Description Figure 1 This is a three-dimensional structural diagram of the airtightness testing fixture described in this utility model.

[0021] Figure 2 This is a schematic diagram of the rigid shaft air duct.

[0022] Figure 3 yes Figure 2 A schematic diagram of the CC cross-section structure.

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of a specification controller.

[0024] Figures 1 to 4 The reference numerals in the attached drawings are as follows: 1. Base plate; 101. Rubber pad; 2. Product placement plate; 21. L-shaped positioning block; 211. Guide slope; 3. Column; 4. Working platform; 41. Extended mounting part; 42. Linear bearing; 5. Drive platform; 6. Hard shaft air pipe; 601. Center hole; 6011. Upper connecting threaded hole; 6012. Lower connecting threaded hole; 61. Linear bearing; 62. Clamp; 63. Air pipe connector; 64. Push spring; 65. Air head connecting block; 6501. Air blowing through hole; 651. Columnar threaded connection part; 66. Rubber air head; 661. Air blowing port; 7. Drive cylinder; 70. Solenoid valve; 73. Floating joint; 9. Controller; 91. Air tightness detection port. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1 to 4This invention provides a detailed description of the specific implementation scheme of an airtightness testing fixture.

[0026] like Figure 1 As shown, the airtightness testing fixture of this utility model includes: a base plate 1, a drive platform 5 mounted on one corner of the base plate 1 via a support formed by three columns 3, i.e., the bottom ends of the three columns 3 are mounted on the base plate 1, and the top ends of the three columns 3 are mounted on the drive platform 5. A working platform 4 is also movably mounted on the three columns 3 between the base plate 1 and the drive platform 5. Specifically, the working platform 4 is equipped with linear bearings 42 corresponding to the columns 3, and the columns 3 are movably inserted into the corresponding linear bearings 42. The drive platform 5 is equipped with a drive air... The cylinder 7 and the solenoid valve 70 for switching the air path of the drive cylinder 7 are included. The piston rod of the drive cylinder 7 passes downward through the drive platform 5 and is connected to the working platform 4 via a floating joint 73. A protruding mounting part 41 is provided on the working platform 4 facing the center of the base plate 1. A vertically arranged rigid shaft air guide pipe 6 is installed on the protruding mounting part 41. Specifically, the rigid shaft air guide pipe 6 is mounted on the protruding mounting part 41 of the working platform 4 via a linear bearing 61. A clamp 62 is provided above the linear bearing 61 on the rigid shaft air guide pipe 6 (this is a common technique in the art and will not be described further here). Figure 2 and Figure 3As shown, the bottom of the rigid shaft air guide tube 6 is provided with an air head connecting block 65. The air head connecting block 65 has an air blowing through hole 6501 communicating with the central hole 601 of the rigid shaft air guide tube 6. The air head connecting block 65 also has an air head mounting hole on its bottom surface communicating with the air blowing through hole 6501. A rubber air head 66 is installed in the air head mounting hole, and the rubber air head 66 has an air blowing port 661 communicating with the air blowing through hole 6501 of the air head connecting block 65. Above the air head connecting block 65, the rigid shaft air guide tube 6 is fitted with a spring-loaded support for elastic pushing. The push spring 64 of the component has its lower end pressing against the air head connecting block 65 and its upper end pressing against the linear bearing 61. The base plate 1 is also provided with a replaceable product positioning fixture, which includes a product placement plate 2 on the base plate 1. The product placement plate 2 is provided with a pair of L-shaped positioning blocks 21 arranged opposite to each other. The pair of L-shaped positioning blocks 21 are provided with guide slopes 211 at their product inlet, which make the opening between the pair of L-shaped positioning blocks 21 gradually increase outward. In this embodiment, the air head connecting block 65 is specifically configured as follows: the rigid shaft air guide tube 6 has a lower connecting threaded hole 6012 at its bottom that communicates with the central hole 601 of the rigid shaft air guide tube 6; the air head connecting block 65 is provided with a columnar threaded connecting part 651 corresponding to the lower connecting threaded hole 6012; the air blowing through hole 6501 passes through the columnar threaded connecting part 651; the columnar threaded connecting part 651 is threadedly connected to the lower connecting threaded hole 6012 of the rigid shaft air guide tube 6; and rubber pads 101 are respectively provided at the four corners of the back of the base plate 1.

[0027] In practical applications, such as Figure 2 and Figure 3 As shown, the rigid shaft air guide tube 6 has an upper connecting threaded hole 6011 at the top of its central hole 601, which corresponds to the connecting thread on the corresponding end of the air pipe connector 63. The corresponding end of the air pipe connector 63 is located in the upper connecting threaded hole 6011 of the rigid shaft air guide tube 6.

[0028] The working process of this utility model is as follows: the product placement plate 2 corresponding to the controller 9 is fixed on the base plate 1, and then... Figure 4 The controller 9 is pushed into the pair of L-shaped positioning blocks 21 through the opening between them. The air head connecting block 65 is aligned with the airtightness detection port 91 of the controller 9. Then, the drive cylinder 7 is activated, causing the working platform 4 to move downwards along with the rigid shaft air guide tube 6, so that the rubber air head 66 presses against the airtightness detection port 91 of the controller 9. At this point, the airtightness of the internal cavity of the controller 9 can be tested.

[0029] In summary, the above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent variations and modifications made to the shape, structure, features and spirit described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. An airtightness testing fixture, comprising: The base plate is characterized in that a drive platform is mounted upward on the base plate via a bracket, and a working platform is slidably mounted on the bracket between the drive platform and the base plate. A drive cylinder is mounted on the drive platform, and the piston rod of the drive cylinder passes through the drive platform and is connected to the working platform via a floating joint. The working platform has an outwardly extending mounting part, and a vertically arranged rigid shaft air guide pipe is mounted on the extending mounting part. An air head connecting block is provided at the bottom of the rigid shaft air guide pipe. An air blowing through hole communicating with the rigid shaft air guide pipe is opened in the air head connecting block. An air head mounting hole communicating with the air blowing through hole is opened on the bottom surface of the air head connecting block. A rubber air head is installed in the air head mounting hole. An air blowing port communicating with the air blowing through hole of the air head connecting block is opened in the rubber air head. An elastic pushing component is sleeved on the rigid shaft air guide pipe above the air head connecting block. The lower end of the elastic pushing component presses against the air head connecting block, and the upper end of the elastic pushing component presses against the extending mounting part of the working platform.

2. The airtightness testing fixture according to claim 1, characterized in that, The base plate is also equipped with a replaceable product positioning fixture.

3. The airtightness testing fixture according to claim 2, characterized in that, The product positioning fixture includes: a product placement plate set on the base plate, and a pair of L-shaped positioning blocks arranged opposite each other on the product placement plate.

4. The airtightness testing fixture according to claim 3, characterized in that, The pair of L-shaped positioning blocks are provided with a guide slope at their product inlet, which causes the opening between the pair of L-shaped positioning blocks to gradually increase outward.

5. The airtightness testing fixture according to claim 1, characterized in that, The drive platform is also equipped with a solenoid valve for switching the air path.

6. The airtightness testing fixture according to claim 1, characterized in that, The specific arrangement of the rigid shaft air guide tube is as follows: the rigid shaft air guide tube is set on the extended mounting part of the working platform through a linear bearing, and a clamp is set above the linear bearing on the rigid shaft air guide tube. The upper end of the elastic pushing component is pressed against the extended mounting part of the working platform through the linear bearing.

7. The airtightness testing fixture according to claim 1, characterized in that, The support includes at least three columns, with the bottom of the columns mounted on the base plate and the top of the columns mounted on the drive platform.

8. The airtightness testing fixture according to claim 7, characterized in that, The working platform is movably mounted on the columns via linear bearings that correspond one-to-one with the columns. Specifically, the working platform is equipped with linear bearings that correspond one-to-one with the columns, and the columns are movably mounted in the corresponding linear bearings.

9. The airtightness testing fixture according to claim 1, characterized in that, The specific configuration of the air head connecting block is as follows: the rigid shaft air guide tube has a lower connecting threaded hole at its bottom that communicates with the inner hole of the rigid shaft air guide tube; the air head connecting block is provided with a columnar threaded connecting part corresponding to the lower connecting threaded hole; the air blowing hole passes through the columnar threaded connecting part; and the columnar threaded connecting part is threadedly connected to the lower connecting threaded hole of the rigid shaft air guide tube.

10. An airtightness testing fixture according to any one of claims 1 to 9, characterized in that, The gel-like air head is a rubber air head, and the elastic pushing component is a spring.

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