Air tightness detection device
By designing an airtightness testing device, an accurate and efficient airtightness test of the motor housing is achieved using a pressure-holding cylinder and an automatic turntable. This solves the problems of inaccurate testing and low efficiency in existing technologies, and realizes efficient and continuous testing of the motor housing.
Patent Information
- Application Number
- CN202422697217.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-06
AI Technical Summary
Existing methods for testing the airtightness of motor housings are not accurate enough and are inefficient. In particular, the presence of slots or holes on the motor housing leads to high uncertainty in the testing structure, and the testing process is cumbersome and time-consuming.
An airtightness testing device was designed, including components such as a bottom box, a top box, a support frame, a pressure-holding cylinder, an upper mold, an automatic turntable, and an airtightness tester. The pressure-holding cylinder pushes the upper mold to close, and the airtightness is judged by the change in air pressure. The automatic turntable enables continuous testing in two stations.
It improves the accuracy and efficiency of motor housing airtightness testing, simplifies the operation process, reduces material change time, and enhances testing stability and efficiency.
Smart Images
Figure CN223512874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of airtightness testing technology, and in particular to an airtightness testing device. Background Technology
[0002] Air tightness testing is a method to ensure the sealing performance of a container or equipment by testing its airtightness. It utilizes the pressure difference between the inside and outside of the container to check for leaks. Air tightness testing typically uses an air tightness testing instrument, which can automatically complete the testing procedure and interpret the results.
[0003] After the motor housing is demolded, it is usually tested for air tightness before leaving the factory to prevent problems such as air leakage and oil leakage during subsequent use. However, the existing testing methods are difficult to specifically test the air tightness of the motor housing. The testing method is mostly to observe the air tightness by immersing it in water. However, there are many slots and holes on the motor housing, so the testing structure may not be accurate. The testing process is cumbersome, the material change time is long, and the testing efficiency is low. Utility Model Content
[0004] In view of the shortcomings of the prior art, this utility model provides an airtightness testing device, which overcomes the shortcomings of the prior art and effectively solves the problems of inaccurate test results and low test efficiency.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An airtightness testing device includes a base box, a top box installed on the top outer wall of the base box, and a support frame installed inside the top box. A pressure-holding cylinder is fixedly connected to the top outer wall of the support frame by screws, and an upper mold is fixedly connected to the piston rod of the pressure-holding cylinder. An air pipe is fixedly connected to one side outer wall of the upper mold. An automatic turntable is rotatably connected to the top outer wall of the top box, and a lower mold 1 and a lower mold 2 are symmetrically distributed on the top outer wall of the automatic turntable.
[0007] A safety cover is fixedly connected to the outer wall of the top of the base box, and a horizontal cylinder is fixedly connected to the inner wall of the safety cover. A lifting cylinder is fixedly connected to the piston rod of the horizontal cylinder, and a turntable safety door is fixedly connected to the piston rod of the lifting cylinder. A positioning plate is welded to one side of the outer wall of the turntable safety door.
[0008] Preferably, a three-color alarm light is installed on the top outer wall of the top box, and a human-machine interface is provided on the top of one side outer wall of the top box.
[0009] Preferably, an airtightness detector is provided at the bottom of the human-machine interface, and a display screen is provided on one side of the airtightness detector, with a judgment light at the bottom of the display screen.
[0010] Preferably, a barcode scanner is fixedly connected to the top outer wall of the base box on one side of the safety cover.
[0011] Preferably, a placement groove is provided on one side of the outer wall of the bottom box, and adjacent sample testing boxes and defective product boxes are placed on the bottom inner wall of the placement groove, and a keyboard tray is slidably connected to the top inner wall of the placement groove.
[0012] Preferably, an air inlet is provided on one side of the outer wall of the upper mold, and an air pipe is fixedly connected to the inner wall of the air inlet. An adjacent positioning pin is fixedly connected to the bottom outer wall of the upper mold, and positioning holes are provided on the top outer walls of both the lower mold and the lower mold. The size of the positioning pin is compatible with the size of the positioning hole.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. The airtightness testing device designed in this paper allows the motor housing to be placed inside the lower mold. The upper mold can be closed by pushing it down with a pressure-holding cylinder. The airtightness of the motor housing can be judged by observing the change in air pressure. The operation is simple, quick and accurate. Furthermore, the automatic turntable can be used to drive the lower mold one and the lower mold two to the bottom of the upper mold in turn, realizing continuous testing at two stations and greatly improving the testing efficiency.
[0015] 2. The airtightness testing device in this design, through the sequential action of the horizontal cylinder and the lifting cylinder, allows the turntable safety door to move closer to the automatic turntable while separating upward from the safety cover. The positioning plate can squeeze the lower mold to complete the limit and prevent the automatic turntable from continuing to rotate, thus improving the stability of the airtightness testing process. At the same time, it expands the space between the turntable safety door and the safety cover, making material handling more convenient and saving material replacement time. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of an airtightness testing device proposed in this utility model.
[0017] Figure 2 This is a schematic diagram of the internal structure of the top box of an airtightness testing device proposed in this utility model;
[0018] Figure 3 This is a schematic diagram of the unfolded structure of the safety cover of the airtightness testing device proposed in this utility model;
[0019] Figure 4 This is a schematic diagram of the upper and lower molds of an airtightness testing device proposed in this utility model.
[0020] In the diagram: 1. Base box; 2. Top box; 3. Support frame; 4. Pressure holding cylinder; 5. Upper mold; 6. Air pipe; 7. Automatic turntable; 8. Lower mold one; 9. Lower mold two; 10. Safety cover; 11. Horizontal cylinder; 12. Lifting cylinder; 13. Turntable safety door; 14. Positioning plate; 15. Three-color alarm light; 16. Human-machine interface; 17. Air tightness detector; 18. Display screen; 19. Judgment light; 20. Barcode scanner; 21. Sample testing box; 22. Defective product box; 23. Keyboard tray; 24. Air inlet; 25. Positioning pin. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Example 1, refer to Figure 1-2 An airtightness testing device includes a base box 1, a top box 2 installed on the top outer wall of the base box 1, and a support frame 3 installed inside the top box 2. A pressure-holding cylinder 4 is fixedly connected to the top outer wall of the support frame 3 by screws, and an upper mold 5 is fixedly connected to the piston rod of the pressure-holding cylinder 4. An air pipe 6 is fixedly connected to one side outer wall of the upper mold 5. An automatic turntable 7 is rotatably connected to the top outer wall of the top box 2, and a lower mold 1 8 and a lower mold 2 9 are symmetrically distributed on the top outer wall of the automatic turntable 7.
[0023] In this embodiment, the motor housing can be placed inside the lower mold. The upper mold 5 can be closed by pushing it downward with the pressure-holding cylinder 4. The airtightness of the motor housing can be judged by observing the change in air pressure. The operation is simple, quick and accurate. Furthermore, the automatic turntable 7 can be used to drive the lower mold 1 8 and the lower mold 2 9 to the bottom of the upper mold 5 in turn, realizing continuous detection at two stations and greatly improving the detection efficiency.
[0024] Example 2, refer to Figure 2-3 An airtightness testing device, wherein a safety cover 10 is fixedly connected to the outer wall of the top of the base box 1, and a horizontal cylinder 11 is fixedly connected to the inner wall of the safety cover 10. A lifting cylinder 12 is fixedly connected to the piston rod of the horizontal cylinder 11, and a turntable safety door 13 is fixedly connected to the piston rod of the lifting cylinder 12. A positioning plate 14 is welded to the outer wall of one side of the turntable safety door 13.
[0025] In this embodiment, through the sequential action of the horizontal cylinder 11 and the lifting cylinder 12, the turntable safety door 13 can move closer to the automatic turntable 7 while separating upward from the safety cover 10. The positioning plate 14 can squeeze the lower mold to complete the limit and prevent the automatic turntable 7 from continuing to rotate, thereby improving the stability during the airtightness test. At the same time, the space between the turntable safety door 13 and the safety cover 10 is expanded, making it convenient to pick up materials and saving the time for changing materials.
[0026] Reference Figure 1 The top outer wall of the top box 2 is equipped with a three-color alarm light 15, and a human-machine interface 16 is set on the top of one side outer wall of the top box 2.
[0027] Reference Figure 1 The bottom of the human-machine interface 16 is equipped with an air tightness detector 17, and a display screen 18 is provided on one side of the air tightness detector 17. A judgment light 19 is provided at the bottom of the display screen 18.
[0028] Reference Figure 1 A barcode scanner 20 is fixedly connected to the top outer wall of the bottom box 1 on one side of the safety cover 10.
[0029] Reference Figure 1 The bottom box 1 has a placement slot on one side of the outer wall, and the adjacent sample test box 21 and defective product box 22 are placed on the bottom inner wall of the placement slot. The keyboard tray 23 is slidably connected to the top inner wall of the placement slot.
[0030] Reference Figure 4 An air inlet 24 is provided on one side of the outer wall of the upper mold 5, and an air pipe 6 is fixedly connected to the inner wall of the air inlet 24. An adjacent positioning pin 25 is fixedly connected to the bottom outer wall of the upper mold 5, and positioning holes are provided on the top outer walls of the lower mold 1 8 and the lower mold 2 9. The size of the positioning pin 25 is compatible with the size of the positioning hole.
[0031] Working principle: First, the motor housing is placed in the lower mold 8. Then, as the automatic turntable 7 rotates, the lower mold 8 is transferred to the bottom of the upper mold 5. The upper mold 5 is pushed down by the pressure-holding cylinder 4 to complete the mold closing operation. During the air passage 6, the airflow will enter the motor housing. By observing the air pressure change, the air tightness of the motor housing can be judged. After the air tightness test of the motor housing in the lower mold 8 is completed, the turntable safety door 13 is opened by the horizontal cylinder 11 and the lifting cylinder 12, and the motor housing is placed into the lower mold 9 to continue the air tightness test. The automatic turntable 7 drives the lower mold 8 and the lower mold 9 to be transferred to the bottom of the upper mold 5 in turn to complete the continuous test of the dual station.
[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An airtightness testing device, comprising a base box (1), characterized in that, The top outer wall of the bottom box (1) is fitted with a top box (2), and a support frame (3) is provided inside the top box (2). The top outer wall of the support frame (3) is fixedly connected to a pressure-holding cylinder (4) by screws, and the piston rod of the pressure-holding cylinder (4) is fixedly connected to an upper mold (5). An air pipe (6) is fixedly connected to one side of the outer wall of the upper mold (5). An automatic turntable (7) is rotatably connected to the top outer wall of the top box (2), and symmetrically distributed lower molds one (8) and lower mold two (9) are installed on the top outer wall of the automatic turntable (7). A safety cover (10) is fixedly connected to the top outer wall of the bottom box (1), and a horizontal cylinder (11) is fixedly connected to the inner wall of the safety cover (10). A lifting cylinder (12) is fixedly connected to the piston rod of the horizontal cylinder (11), and a turntable safety door (13) is fixedly connected to the piston rod of the lifting cylinder (12). A positioning plate (14) is welded to one side of the outer wall of the turntable safety door (13).
2. The airtightness testing device according to claim 1, characterized in that, The top outer wall of the top box (2) is equipped with a three-color alarm light (15), and a human-machine interface (16) is provided on the top of one side outer wall of the top box (2).
3. The airtightness testing device according to claim 2, characterized in that, The bottom of the human-machine interface (16) is provided with an air tightness detector (17), and a display screen (18) is provided on one side of the air tightness detector (17), and a judgment light (19) is provided at the bottom of the display screen (18).
4. The airtightness testing device according to claim 1, characterized in that, A barcode scanner (20) is fixedly connected to the top outer wall of the base box (1) on one side of the safety cover (10).
5. The airtightness testing device according to claim 1, characterized in that, The bottom box (1) has a placement slot on one side of the outer wall, and the adjacent sample testing box (21) and defective product box (22) are placed on the bottom inner wall of the placement slot. The keyboard tray (23) is slidably connected to the top inner wall of the placement slot.
6. The airtightness testing device according to claim 1, characterized in that, An air inlet (24) is provided on one side of the outer wall of the upper mold (5), and an air pipe (6) is fixedly connected to the inner wall of the air inlet (24). An adjacent positioning pin (25) is fixedly connected to the bottom outer wall of the upper mold (5), and positioning holes are provided on the top outer walls of the lower mold (8) and the lower mold (9). The size of the positioning pin (25) is compatible with the size of the positioning hole.