Air tightness detection device
By using a workbench drainage channel, a slide rail pushing mechanism, and a gantry clamping system, the positioning accuracy and clamping rigidity problems of existing airtightness testing devices have been solved, achieving fully automated and high-precision airtightness testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 广州普敬智能装备科技有限公司
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-05
AI Technical Summary
Existing airtightness testing devices suffer from low workpiece positioning accuracy, insufficient rigidity of clamping mechanisms, poor discharge of leaking media, and low degree of automation, resulting in insufficient testing accuracy and safety.
The system employs a worktable with drainage channels and holes, a slide rail pushing mechanism, a gantry clamping mechanism, and a guide rod guiding system to achieve automatic workpiece positioning and stable clamping, while sensors and buffers prevent overload.
It achieves fully automated testing, improves testing accuracy and safety, reduces the need for manual intervention, and reduces maintenance costs.
Smart Images
Figure CN224202660U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment technology, and in particular to an airtightness testing device. Background Technology
[0002] In the industrial manufacturing sector, airtightness testing is a core step in ensuring the sealing performance of workpieces, especially in precision products such as automotive parts and medical devices, where testing accuracy directly impacts product quality. However, existing airtightness testing devices have significant structural and functional defects, specifically: 1. Low workpiece positioning accuracy, relying on manual adjustment; 2. Insufficient rigidity of the clamping mechanism, easily leading to workpiece deformation or clamping failure; 3. Inadequate drainage of leaked media, resulting in high maintenance costs; 4. Low degree of automation, posing significant safety risks. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide an airtightness testing device that realizes fully automated testing and significantly reduces the need for manual intervention.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: an airtightness testing device, including a worktable with a testing station, a pushing mechanism for pushing a workpiece to the testing station, and a fixing mechanism for clamping and fixing the workpiece at the testing station; the edge of the worktable is provided with a drainage groove and a drainage hole connected to the drainage groove; the pushing mechanism includes a slide rail, a tray that slides with the slide rail, and a pushing cylinder connected to the tray, the slide rail and the pushing cylinder being fixed on the worktable; the fixing mechanism includes a top-pressure cylinder located at the top of the workpiece and side-pressure cylinders located on both sides of the workpiece, the top-pressure cylinder being connected to a top pressure plate, and the side-pressure cylinders being connected to side pressure plates. The principle of this utility model is as follows: after filling the workpiece with water, it is placed upside down on the pushing tray; the drainage grooves around the worktable are used to collect leaked water, keeping the worktable surface dry; after the workpiece is placed on the tray, it is pushed to the predetermined testing station by the pushing cylinder, and then three clamping cylinders clamp the workpiece; the workpiece is then left to stand to check for water leakage.
[0005] As an improvement, the workbench is provided with two slide rails on both sides of the inspection station, forming an avoidance channel between the two slide rails. The push cylinder is located in the avoidance channel, and the bottom of the tray is provided with a connecting block in the avoidance channel. The push cylinder is connected to the connecting block.
[0006] As an improvement, the workbench is equipped with a gantry that spans the testing station, and the top pressure cylinder and the side pressure cylinder are mounted on the gantry.
[0007] As an improvement, the top pressure plate is connected to the first guide rod, the first guide rod is engaged with the first guide hole on the gantry frame, the side pressure plate is provided with a second guide rod, the gantry frame is provided with a second guide plate, and the second guide rod is engaged with the second guide hole on the second guide plate.
[0008] As an improvement, a buffer is provided at the end of the first slide rail on one side, and a sensor is provided on the second slide rail.
[0009] The beneficial effects of this utility model compared with the prior art are:
[0010] The workbench is equipped with drainage grooves and drainage holes for rapid discharge of leaked media; it consists of slide rails, trays and push cylinders to achieve automatic workpiece positioning; the gantry integrates top pressure cylinders and side pressure cylinders, and the guide rods ensure clamping stability; the slide rail ends are equipped with buffers and sensors to prevent overload collisions. Attached Figure Description
[0011] Figure 1 This is a perspective view of the present utility model.
[0012] Figure 2 This is a top view of the present invention. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings.
[0014] like Figure 1 , 2As shown, an airtightness testing device includes a worktable 1 with a testing station, a pushing mechanism for pushing a workpiece to the testing station, and a fixing mechanism for clamping and fixing the workpiece at the testing station. The worktable 1 has a drainage groove 2 and drainage holes connected to the drainage groove 2 on its edge. The drainage groove 2 surrounds the worktable 1, collecting and draining any leaks, keeping the surface of the worktable 1 dry and making it easier for the operator to determine if there is a leak. The pushing mechanism includes a slide rail 6, a tray 9 that slides with the slide rail 6, and a pushing cylinder 3 connected to the tray 9. The slide rail 6 and the pushing cylinder 3 are fixed to the worktable 1. Two slide rails 6 are respectively provided on both sides of the testing station on the worktable 1, forming a clearance channel between the two slide rails 6. The pushing cylinder 3 is located within the clearance channel. A connecting block is provided at the bottom of the tray 9 within the clearance channel, and the pushing cylinder 3 is connected to the connecting block. A buffer 5 is provided at the end of the first slide rail 6 on one side, and a sensor 4 is provided on the second slide rail 6. The fixing mechanism includes a top-pressure cylinder 8 located at the top of the workpiece and side-pressure cylinders 7 located on both sides of the workpiece. The top-pressure cylinder 8 is connected to a top-pressure plate 11, and the side-pressure cylinders 7 are connected to a side-pressure plate 13. A gantry frame 12 spanning the inspection station is provided on the workbench 1, and the top-pressure cylinder 8 and the side-pressure cylinders 7 are mounted on the gantry frame 12. The top-pressure plate 11 is connected to a first guide rod, which engages with a first guide hole on the gantry frame 12. A second guide rod is provided on the side-pressure plate 13, and a second guide plate is provided on the gantry frame 12. The second guide rod engages with a second guide hole on the second guide plate.
[0015] The principle of this utility model is as follows: After the workpiece is filled with water, it is placed upside down on the push plate. The drainage grooves 2 around the worktable 1 are used to collect the leaked water and keep the surface of the worktable 1 dry. After the workpiece is placed on the tray 9, it is sent to the predetermined inspection station by the push cylinder 3. Then, three clamping cylinders clamp the workpiece. The workpiece is left to stand to see if there is any water leakage.
Claims
1. An airtightness testing device, characterized in that: The device includes a worktable with an inspection station, a pushing mechanism for pushing workpieces to the inspection station, and a fixing mechanism for clamping and fixing the workpieces at the inspection station. The edge of the worktable is provided with a drainage groove and a drainage hole connected to the drainage groove. The pushing mechanism includes a slide rail, a tray that slides with the slide rail, and a pushing cylinder connected to the tray. The slide rail and the pushing cylinder are fixed on the worktable. The fixing mechanism includes a top-pressing cylinder located at the top of the workpiece and side-pressing cylinders located on both sides of the workpiece. The top-pressing cylinder is connected to a top-pressing plate, and the side-pressing cylinders are connected to side-pressing plates.
2. The airtightness testing device according to claim 1, characterized in that: The workbench is provided with two slide rails on both sides of the inspection station, forming an avoidance channel between the two slide rails. The push cylinder is located in the avoidance channel, and the bottom of the tray is provided with a connecting block in the avoidance channel. The push cylinder is connected to the connecting block.
3. The airtightness testing device according to claim 1, characterized in that: The workbench is equipped with a gantry frame that spans the testing station, and the top pressure cylinder and the side pressure cylinder are mounted on the gantry frame.
4. The airtightness testing device according to claim 3, characterized in that: The top pressure plate is connected to the first guide rod, the first guide rod is engaged with the first guide hole on the gantry frame, the side pressure plate is provided with a second guide rod, the gantry frame is provided with a second guide plate, and the second guide rod is engaged with the second guide hole on the second guide plate.
5. The airtightness testing device according to claim 2, characterized in that: The first slide rail on one side has a buffer at its end, and the second slide rail has a sensor.