Multifunctional automatic leakage testing machine for air tightness of electrically-driven shell

Abstract

The utility model relates to the field of shell sealing performance test auxiliary equipment, and discloses a multifunctional electrically-driven shell airtightness automatic leakage test machine, which comprises a shell I, a support frame, an air pump, a detection instrument, a shell and a lower die, an intermittent feeding assembly is arranged in a shell II, a sorting and discharging assembly is arranged on the outer side of the intermittent feeding assembly, and a discharging assembly is arranged on the outer side of the sorting and discharging assembly. The output end of the first motor is fixedly connected with a rotary disc, the output end of the second motor is fixedly connected with a first belt wheel, the interior of the second shell is rotationally connected with a second belt wheel, and the outer side of the first belt wheel and the outer side of the second belt wheel are sleeved with a conveying belt. According to the utility model, the motor I drives the conveyor belt to convey the shell to the clamping groove of the turntable, the turntable guides the shell to enter the leakage test area, the hydraulic rod, the air pump and the detection instrument cooperate for detection, the electric push rod pushes out the shell when the shell is unqualified, the turntable rotates to the next link when the shell is qualified, and the motor drives the deflector rod to realize quick sorting and blanking. The structure is simple and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for testing the airtightness of housings, and in particular to a multifunctional automatic leak tester for the airtightness of electrically driven housings. Background Technology

[0002] As a key encapsulation component of the electric drive system in new energy vehicles, the electric drive housing bears the heavy responsibility of protecting core components such as the internal motor, controller, and reducer. It effectively resists the intrusion of external dust, moisture, and chemicals, prevents mechanical impacts and collisions from damaging internal precision components, and ensures the stable operation of the electric drive system under various complex operating conditions. In the field of new energy vehicles, the application of electric drive housings is extremely widespread; whether in passenger cars, commercial vehicles, or special vehicles, the reliable protection of the electric drive housing is indispensable.

[0003] Currently, there are various types of automated leak testing machines for housings on the market. A common structure typically consists of a clamping system, an airtightness testing instrument, and a control system. The clamping system is responsible for precisely positioning and sealing the electric drive housing, ensuring no gas leakage during testing. The airtightness testing instrument uses differential pressure and flow detection principles to perform operations such as inflation, balancing, pressure holding, and measurement within the housing cavity to accurately detect the leakage rate. However, existing automated leak testing machines operate on a batch basis, testing only one housing at a time, which is time-consuming and reduces production efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a multifunctional automatic leak tester for the airtightness of electric drive housings, which aims to improve the low efficiency of single-feeding inspection in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-functional electric-driven automatic leak tester for housing airtightness includes a housing 1, a support frame, an air pump, a testing instrument, a housing and a lower mold. A housing 2 is fixedly connected inside the housing 1. An intermittent feeding assembly is installed inside the housing 2. A sorting and unloading assembly is installed outside the intermittent feeding assembly.

[0007] The intermittent feeding assembly includes a motor, which is fixedly connected inside the housing. A turntable is fixedly connected to the output end of the motor. A motor is fixedly connected inside the housing. A pulley is fixedly connected to the output end of the motor. A pulley is rotatably connected inside the housing. A conveyor belt is fitted around the outer sides of the pulleys. The lower mold is fixedly connected to the bottom of the housing. The housing overlaps the top of the conveyor belt.

[0008] As a further description of the above technical solution:

[0009] The sorting and unloading assembly includes an electric push rod, which is fixedly connected to the outside of the support frame. The movable end of the electric push rod is fixedly connected to a push claw. The inside of the outer casing is fixedly connected to a motor, and the output end of the motor is fixedly connected to a lever.

[0010] As a further description of the above technical solution:

[0011] A motor box is fixedly connected to the outside of the outer casing 1, a motor 2 is fixedly connected to the inside of the motor box 1, a housing is fixedly connected to the inside of the outer casing 1, a motor 1 is fixedly connected to the inside of the housing, a motor box 2 is fixedly connected to the outside of the housing, and a motor 3 is fixedly connected to the inside of the motor box 2.

[0012] As a further description of the above technical solution:

[0013] The conveyor belt is internally connected to an auxiliary pulley for rotation.

[0014] As a further description of the above technical solution:

[0015] The outer side of the support frame is fixedly connected to the inside of the outer shell, and a hydraulic rod is fixedly connected to the outer side of the support frame. The movable end of the hydraulic rod is fixedly connected to the upper mold.

[0016] As a further description of the above technical solution:

[0017] An air inlet pipe and an air outlet pipe are fixedly connected to the outer side of the upper mold. The air pump is fixedly connected to the other end of the air inlet pipe. A protective box is fixedly connected to the inside of the outer shell. The air pump is fixedly connected to the inside of the protective box. The testing instrument is fixedly connected to the other end of the air outlet pipe.

[0018] As a further description of the above technical solution:

[0019] A display screen and adjustment buttons are fixedly connected to the outer side of the outer casing;

[0020] As a further description of the above technical solution:

[0021] A fixing block is fixedly connected to the outer side of the outer casing, a rotating door is rotatably connected to the outer side of the outer casing, a rotating shaft is fixedly connected to the outer side of the rotating door, a pin is fixedly connected to the outer side of the rotating door, a latch is fixedly connected to the outer side of the outer casing, the pin and the latch are engaged with each other, and glass is fixedly connected to the inside of the rotating door.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this invention, the housing is placed at a designated position on the conveyor belt. Motor one is turned on, causing the pulley to rotate initially, which in turn drives the conveyor belt to rotate. The rotation of the conveyor belt then drives pulley two to rotate, thereby transporting the housing onto a turntable. The turntable is equipped with slots to secure the housing and guide it into the leak testing area. In this area, hydraulic rods, air pumps, and testing instruments work together to complete the leak test. This feeding method is suitable for intermittent production lines, ensuring that multiple housings can be quickly fed and tested for leaks, effectively improving production efficiency and reducing production costs.

[0024] 2. In this utility model, if the result does not meet the standard after the test, the electric push rod will be activated, and the push claw will push the shell out and transport it with the help of another set of conveying systems. If the leak test passes, the shell will be turned to the next stage by the turntable, the motor will start, and the lever will slowly rotate to send the shell into the third set of conveying systems for unloading. At the same time, after the lever rotates once, it will move the next shell to the conveying system. This device realizes rapid sorting and unloading, effectively saves working time, and has a simple structure and is easy to operate. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the multifunctional electric drive housing airtightness automatic leak tester proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the multifunctional electric drive housing airtightness automatic leak tester proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the air pump in the multifunctional electric-driven housing airtightness automatic leak tester proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the intermittent feeding assembly of the multifunctional electric-driven housing airtightness automatic leak tester proposed in this utility model;

[0029] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0030] Figure 6 This is a schematic diagram of the conveyor belt structure of the multifunctional electric-driven automatic leak tester for housing airtightness proposed in this utility model.

[0031] Legend:

[0032] 1. Outer shell 1; 2. Housing; 3. Motor 1; 4. Turntable; 5. Motor 2; 6. Pulley 1; 7. Pulley 2; 8. Conveyor belt; 9. Auxiliary pulley; 10. Lower mold; 11. Outer shell 2; 12. Motor box 1; 13. Support frame; 14. Electric push rod; 15. Push claw; 16. Upper mold; 17. Hydraulic rod; 18. Motor box 2; 19. Lever; 20. Motor 3; 21. Housing; 22. Display screen; 23. Adjustment button; 24. Rotating shaft; 25. Fixing block; 26. Glass; 27. Pin; 28. Lock; 29. ​​Protective box; 30. Air inlet pipe; 31. Air outlet pipe; 32. Testing instrument; 33. Air pump; 34. Rotating door. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 , Figure 2 , Figure 4 and Figure 6 This utility model provides an embodiment of a multifunctional electric-driven automatic leak tester for housing airtightness, including a housing 1, a support frame 13, an air pump 33, a testing instrument 32, a housing 21, and a lower mold 10. The air pump 33 includes a motor providing power, a cylinder compressing gas, an intake valve controlling gas intake, an exhaust valve controlling gas discharge, a gas storage tank storing compressed gas, a pressure gauge displaying pressure values, a safety valve ensuring safety, and a pressure regulating valve adjusting pressure, etc., which are existing technologies and will not be described in detail hereafter. The lower mold 10 is fixed to the bottom of the housing 21, which can plug the screw holes and plug the bottom for subsequent leak testing. A housing 2 11 is fixedly connected inside the housing 1. An intermittent feeding component is installed inside the housing 2 11, and a sorting and unloading component is installed on the outside of the intermittent feeding component.

[0035] The intermittent feeding assembly includes a motor 3, which is fixedly connected inside the outer casing 1. A turntable 4 is fixedly connected to the output end of motor 3. When motor 3 is started, the turntable 4 rotates slowly. The edge of the turntable 4 has grooves to hold the lower mold 10. A motor 5 is fixedly connected inside the outer casing 11. A pulley 6 is fixedly connected to the output end of motor 5. A pulley 7 is rotatably connected inside the outer casing 11. A conveyor belt 8 is fitted around the outer sides of pulleys 6 and 7. When motor 5 is started, it drives pulley 6 to rotate, simultaneously driving the conveyor belt 8 to rotate. The conveyor belt 8 then drives pulley 7 to rotate. The lower mold 10 is fixedly connected to the bottom of the casing 21. The lower mold 10 consists of two parts: the upper part fills the bottom of the casing 21, blocking the screw holes, and the middle part has a thin rod for... The casing 21 is attached to the turntable 4. The bottom is a large cylinder to increase gravity and can be locked in place with a thin rod. The casing 21 is attached to the top of the conveyor belt 8. The outer side of the casing 1 is fixedly connected to the motor box 12, which is used to protect the motor 25. The motor 25 is fixedly connected inside the motor box 12. The inside of the casing 1 is fixedly connected to the housing 2, which is used to protect the motor 3 and facilitate the fixing of the motor box 28. The motor 3 is fixedly connected inside the housing 2. The inside of the conveyor belt 8 is rotatably connected to the auxiliary pulley 9. The function of the auxiliary pulley 9 is to make the casing 21 stable and not shake during transportation. This feeding method is suitable for intermittent assembly line operation, ensuring that multiple casings can be quickly fed and leak tested, improving production efficiency and reducing production costs.

[0036] Reference Figure 1 , Figure 2 , Figure 4 and Figure 6 The sorting and unloading assembly includes an electric push rod 14, which is fixedly connected to the outside of the support frame 13. A pusher 15 is fixedly connected to the movable end of the electric push rod 14. After inspection, if the result does not meet the standard, the electric push rod 14 will be activated, using the pusher 15 to push out the housing 21, which will then be transported by another conveying system. The device has a total of three conveying systems, used for loading, sorting, and unloading of qualified materials. A motor 20 is fixedly connected inside the housing 1, and a lever 19 is fixedly connected to the output end of the motor 20. If the leak test passes, the housing 21 is rotated to the next stage by the turntable 4. The motor 3 20 starts, and the lever 19 rotates slowly, sending the housing 21 into the third conveyor system for unloading. At the same time, after the lever 19 rotates one revolution, it moves the next housing 21 to the conveyor system, realizing rapid sorting and unloading, effectively saving working time. The structure is simple and the operation is convenient. The outer side of the box 2 is fixedly connected to the motor box 2 18. In order to protect the motor 3 20, the motor 3 20 is fixedly connected inside the motor box 2 18.

[0037] Reference Figures 1-6The support frame 13 is fixedly connected to the outside of the outer shell 1. A hydraulic rod 17 is fixedly connected to the outside of the support frame 13. An upper mold 16 is fixedly connected to the movable end of the hydraulic rod 17. During leak testing, the hydraulic rod 17 is activated to push the upper mold 16 into the interior of the shell 21, sealing the shell for testing. An air inlet pipe 30 and an air outlet pipe 31 are fixedly connected to the outside of the upper mold 16. An air pump 33 is fixedly connected to the other end of the air inlet pipe 30. The air pump 33 fills the interior of the shell 21 with gas through the air inlet pipe 30. At the same time, the gas enters the testing instrument 32 from the air outlet pipe 31 for testing. A protective box 29 is fixedly connected inside the outer shell 1. The air pump 33 is fixedly connected inside the protective box 29 to protect it. The testing instrument 32 is fixedly connected to the other end of the air outlet pipe 31. The leak testing instrument includes a detection probe to sense the leak, a signal processing module to analyze the data, and a display device to present the results. The alarm device emits an alarm, the power module provides power, and the data storage module saves records; these are existing technologies and will not be described in detail hereafter. A display screen 22 and an adjustment button 23 are fixedly connected to the outer side of the outer casing 1. The test results will appear on the display screen 22, and the defect rate and pass rate will be automatically calculated for subsequent adjustments. The adjustment button 23 is used to adjust parameters. A fixing block 25 is fixedly connected to the outer side of the outer casing 1. A rotating door 34 is rotatably connected to the outer side of the outer casing 1. The rotating door 34 can be opened when adjusting or repairing the machinery. A rotating shaft 24 is fixedly connected to the outer side of the rotating door 34, and a latch 27 is fixedly connected to the outer side of the rotating door 34. Lifting and rotating the latch 27 will disengage it from the lock 28, opening the rotating door. A lock 28 is fixedly connected to the outer side of the outer casing 1, and the latch 27 and lock 28 are interlocked. A glass 26 is fixedly connected inside the rotating door 34, used for observing the internal workings.

[0038] Working principle: First, place the housing 21 on the conveyor belt 8, start the motor 5, and pulley 6 will rotate, which will drive the conveyor belt 8 to rotate. The rotation of the conveyor belt 8 will drive pulley 7 to rotate, which can transport the housing 21 to the turntable 4. The turntable 4 has a slot to hold the housing and enter the leak test section. The hydraulic rod 17, air pump 33 and testing instruments will be used for leak testing. This feeding method can realize intermittent assembly line feeding, ensure that multiple housings 21 are fed and tested quickly, improve production efficiency and reduce production costs.

[0039] Secondly, after the test is completed, if the test result is unqualified, the electric push rod 14 is activated, and the housing 21 is pushed out through the push claw 15 and transported through another set of conveying devices. If the leak test is qualified, it is rotated to the next position through the turntable 4, the motor 20 is activated, and the lever 19 is slowly rotated to push the housing 21 into the third set of conveying devices. The housing is unloaded through the conveying devices. At the same time, after the lever 19 slowly rotates one revolution, it moves the next housing to the conveying device again. This device can quickly sort and unload materials, saving working time. At the same time, it has a simple structure and is easy to operate.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multifunctional electric-driven automatic leak tester for housing airtightness, comprising a housing (1), a support frame (13), an air pump (33), a testing instrument (32), a housing (21), and a lower mold (10), characterized in that: A second outer shell (11) is fixedly connected inside the first outer shell (1). An intermittent feeding assembly is installed inside the second outer shell (11), and a sorting and unloading assembly is installed on the outside of the intermittent feeding assembly. The intermittent feeding assembly includes a motor (3), which is fixedly connected inside the outer shell (1). A turntable (4) is fixedly connected to the output end of the motor (3). A motor (5) is fixedly connected inside the outer shell (11). A pulley (6) is fixedly connected to the output end of the motor (5). A pulley (7) is rotatably connected inside the outer shell (11). A conveyor belt (8) is sleeved on the outer side of the pulley (6) and the pulley (7). The lower mold (10) is fixedly connected to the bottom of the housing (21). The housing (21) overlaps the top of the conveyor belt (8).

2. The multifunctional electric drive housing airtightness automatic leak tester according to claim 1, characterized in that: The sorting and unloading assembly includes an electric push rod (14), which is fixedly connected to the outside of the support frame (13). The movable end of the electric push rod (14) is fixedly connected to a push claw (15). The inside of the outer shell (1) is fixedly connected to a motor (20), and the output end of the motor (20) is fixedly connected to a lever (19).

3. The multifunctional electric drive housing airtightness automatic leak tester according to claim 2, characterized in that: A motor box (12) is fixedly connected to the outside of the outer shell (1), a motor (5) is fixedly connected to the inside of the motor box (12), a housing (2) is fixedly connected to the inside of the outer shell (1), a motor (3) is fixedly connected to the inside of the housing (2), a motor box (18) is fixedly connected to the outside of the housing (2), and a motor (3) is fixedly connected to the inside of the motor box (18).

4. The multifunctional electric drive housing airtightness automatic leak tester according to claim 1, characterized in that: The conveyor belt (8) is internally connected to an auxiliary pulley (9).

5. The multifunctional electric drive housing airtightness automatic leak tester according to claim 2, characterized in that: The outer side of the support frame (13) is fixedly connected to the inside of the outer shell (1), and a hydraulic rod (17) is fixedly connected to the outer side of the support frame (13). The movable end of the hydraulic rod (17) is fixedly connected to the upper mold (16).

6. The multifunctional electric drive housing airtightness automatic leak tester according to claim 5, characterized in that: An air inlet pipe (30) and an air outlet pipe (31) are fixedly connected to the outside of the upper mold (16). The air pump (33) is fixedly connected to the other end of the air inlet pipe (30). A protective box (29) is fixedly connected inside the outer shell (1). The air pump (33) is fixedly connected inside the protective box (29). The testing instrument (32) is fixedly connected to the other end of the air outlet pipe (31).

7. The multifunctional electric drive housing airtightness automatic leak tester according to claim 1, characterized in that: The outer side of the outer casing (1) is fixedly connected to a display screen (22) and an adjustment button (23).

8. The multifunctional electric drive housing airtightness automatic leak tester according to claim 1, characterized in that: A fixing block (25) is fixedly connected to the outer side of the outer shell (1), a rotating door (34) is rotatably connected to the outer side of the outer shell (1), a rotating shaft (24) is fixedly connected to the outer side of the rotating door (34), a pin (27) is fixedly connected to the outer side of the rotating door (34), a latch (28) is fixedly connected to the outer side of the outer shell (1), the pin (27) and the latch (28) are engaged with each other, and a glass (26) is fixedly connected to the inside of the rotating door (34).

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