Water tank for air tightness detection

Abstract

The invention discloses a water tank for air tightness detection. The water tank is used for solving the technical problem that an existing water tank for product air tightness detection is low in automation degree. The device comprises a rack, a box body used for containing water and a box cover used for covering an opening in the top of the box body. A lifting driving part is installed on the rack, the output end of the lifting driving part is connected with the box cover, the box body is located below the box cover, and the box cover can be driven to move in the vertical direction so as to cover an opening in the top of the box body; the box cover is communicated with an air inlet pipe, the air inlet pipe is connected with an air pump, the air pump is connected with an air source, and the air inlet pipe is connected with a pressure proportional valve; the box body is provided with a lifting assembly, the lifting assembly is connected with a tray, and a positioning cavity used for containing products is formed in the tray.

Description

Technical Field

[0001] The invention relates to the technical field of test equipment design, in particular to a water tank for air tightness detection. Background Art

[0002] In the prior art, in order to ensure the air tightness of the product, the product needs to be tested for air tightness before leaving the factory. At present, the common air tightness test operation is as follows: the product is placed in a water tank with a certain pressure, taken out after a period of time, and image detection or weighing are used to determine whether the air tightness of the product meets the standards.

[0003] At present, the water tanks commonly used for air tightness testing generally have a low degree of automation. Specifically, common water tanks generally include a tank body and a tank cover hinged on the tank body. After the operator places the product in the tank body, the tank cover needs to be closed inside the tank body to ensure that the tank cover and the tank body form a sealed environment. Since products are tested in large quantities, this means that the operator needs to constantly open or close the tank cover. In the long run, this operation imposes a high workload on the operator. In addition, after the test, the tank cover needs to be opened immediately and the product needs to leave the water surface. The urgency of time also brings certain operating difficulties to the operator.

[0004] Therefore, finding a technical solution that can solve the above technical problems has become an important topic studied by technical personnel in this field. Summary of the invention

[0005] The embodiment of the invention discloses a water tank for air tightness detection, which is used to solve the technical problem that the existing water tank for product air tightness detection has a low degree of automation.

[0006] The present invention provides a water box for air tightness detection, comprising a frame, a box body for containing water, and a box cover for covering the top opening of the box body;

[0007] The frame is provided with a lifting drive member, the output end of which is connected to the box cover, the box body is located below the box cover, and the box cover can be driven to move in a vertical direction to cover the top opening of the box body;

[0008] The box cover is connected to an air intake pipe, the air intake pipe is connected to an air pump, the air pump is connected to an air source, and the air intake pipe is connected to a pressure proportional valve;

[0009] The box body is installed with a lifting assembly, the lifting assembly is connected with a tray, and a positioning cavity for placing products is arranged in the tray.

[0010] Optionally, the box cover is also connected to a water inlet pipe, the water inlet pipe is connected to a water inlet pump, the water pump is connected to a water source, and a liquid level sensor for detecting the water level in the box body is also installed in the box cover, and the liquid level sensor is electrically connected to the water inlet pump.

[0011] Optionally, the box cover is also connected to a water outlet pipe, the water outlet pipe is connected to a water pump, and the water pump pumps water out of the box body through the water pump pipe.

[0012] Optionally, a locking assembly for locking the box body is provided on the box cover;

[0013] The locking assembly comprises a finger clamping cylinder, the finger clamping cylinder is connected to a pair of clamping plates, and the clamping plates are provided with a first locking block and a second locking block;

[0014] The box body is provided with a first locking portion matched with the first locking block and a second locking portion matched with the second locking block;

[0015] When the box cover is closed on the top opening of the box body, the clamping finger cylinder drives a pair of clamping plates to approach each other, so that the first locking block is engaged with the first locking portion, and the second locking block is engaged with the second locking portion.

[0016] Optionally, a linear module is further installed on the frame, the box is connected to the linear module, and the box can be moved to just below the box cover under the drive of the linear module.

[0017] Optionally, the lifting assembly includes a rotary drive member, a rotary shaft, a first support seat, a second support seat, a first connecting rod, a second connecting rod, a third connecting rod and a lifting plate;

[0018] A mounting through hole is formed on the side wall of the box body, the rotating shaft is inserted into the mounting through hole and extends into the box body, and the first supporting seat and the second supporting seat are respectively located on opposite sides of the rotating shaft;

[0019] The first end of the first connecting rod is hinged to the first supporting seat, and the second end of the first connecting rod is hinged to the first end of the lifting plate;

[0020] The first end of the second connecting rod is fixed to the rotating shaft, and the second end of the second connecting rod is hinged to the middle part of the lifting plate;

[0021] The first end of the third connecting rod is hinged to the second supporting seat, and the second end of the third connecting rod is hinged to the second end of the lifting plate;

[0022] The lifting plate is connected to the tray;

[0023] The rotary drive member is located outside the housing and connected to the rotary shaft to drive the rotary shaft to rotate;

[0024] When the rotating shaft is driven to rotate in a first rotating direction, the lifting plate rises in a vertical direction to drive the tray to leave the water surface;

[0025] When the rotating shaft is driven to rotate in the second rotating direction, the lifting plate descends in a vertical direction to drive the tray to be immersed in water.

[0026] Optionally, a first sealing ring is provided on the inner edge of the top opening of the box body;

[0027] The first sealing ring includes a main body and a first sealing edge and a second sealing edge connected to the main body, the first sealing edge extends from the main body in an obliquely upward direction, and the second sealing edge extends from the main body in an obliquely downward direction.

[0028] Optionally, a second sealing ring is sleeved on the rotating shaft, and an outer edge of the second sealing ring abuts against a hole wall of the mounting through hole.

[0029] Optionally, the second sealing ring includes a sealing inner ring and a sealing outer ring arranged outside the sealing inner ring, a movable gap is left between the sealing inner ring and the sealing outer ring, and the outer edge of the sealing outer ring abuts against the hole wall of the mounting through hole.

[0030] Optionally, a pressure sensor is also installed on the box cover;

[0031] The pressure sensor is used to detect the air pressure in the box.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] In the air tightness detection water tank of this embodiment, after the operator places the product on the tray through the manipulator, the lifting assembly drives the tray to move downward to immerse the product in water, and then the box cover is automatically closed on the top opening of the box body under the drive of the lifting drive, and after the product is completely immersed, the box cover is separated from the box body under the drive of the lifting drive, and the lifting assembly drives the tray to rise to make the product leave the water surface, and by adjusting the pressure proportional valve on the air pipe, the air pressure in the box body can be automatically adjusted, so that the product can be immersed in water under different pressure environments. In the above design, the water tank can automatically complete the opening and closing of the box cover, and the pressure proportional valve can be used to automatically adjust the air pressure in the box body, which effectively improves the automation level of the air tightness detection water tank and can meet the air tightness detection work of large quantities of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of a water tank for air tightness detection provided by the present invention;

[0036] Figure 2 A schematic diagram of the structure of a box cover of a water tank for air tightness testing provided by the present invention;

[0037] Figure 3 A schematic diagram of the box structure of a water tank for air tightness testing provided by the present invention;

[0038] Figure 4 A structural schematic diagram of a lifting assembly of a water tank for air tightness testing provided by the present invention;

[0039] Figure 5 A schematic structural diagram of a first sealing ring of a water tank for air tightness detection provided by the present invention;

[0040] Figure 6 A schematic diagram of the installation position of a second sealing ring of a water tank for air tightness detection provided by the present invention;

[0041] Figure 7 A schematic structural diagram of a second sealing ring of a water tank for air tightness detection provided by the present invention;

[0042] Illustration: frame 1; box body 2; box cover 3; pressure proportional valve 4; rotary drive member 5; linear module 6; finger cylinder 7; clamping plate 8; first locking block 9; enemy locking block 10; liquid level sensor 11; pressure sensor 12; tray 13; positioning cavity 1301; first sealing ring 14; main body 1401; first sealing edge 1402; second sealing edge 1403; first locking part 15; second locking part 16; rotating shaft 17; first supporting seat 18; second supporting seat 19; first connecting rod 20; second connecting rod 21; third connecting rod 22; lifting plate 23; second sealing ring 24; sealing outer ring 2401; sealing inner ring 2402; lifting drive member 25. DETAILED DESCRIPTION

[0043] The invention discloses a water tank for air tightness detection, which is used to solve the technical problem that the existing water tank for product air tightness detection has a low degree of automation.

[0044] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] See also Figures 1 to 7 , an embodiment of the present invention provides a water tank for air tightness detection, comprising a frame 1, a box body 2 for loading water, and a box cover 3 for covering the top opening of the box body 2;

[0046] The frame 1 is provided with a lifting drive member 25, the output end of which is connected to the box cover 3. The box body 2 is located below the box cover 3, and the box cover 3 can be driven to move in a vertical direction to cover the top opening of the box body 2.

[0047] The box cover 3 is connected to an air intake pipe, the air intake pipe is connected to an air pump, the air pump is connected to an air source, and the air intake pipe is connected to a pressure proportional valve 4;

[0048] The box body 2 is installed with a lifting assembly, and the lifting assembly is connected to a tray 13. The tray 13 is provided with a positioning cavity 1301 for placing products.

[0049] In addition, on the box cover 3

[0050] Specifically, the gas source in this embodiment is a gas storage tank.

[0051] In the airtightness detection water tank of this embodiment, after the operator places the product on the tray 13 through the manipulator, the lifting assembly drives the tray 13 to move downward to immerse the product in water, and then the box cover 3 is automatically closed on the top opening of the box body 2 under the drive of the lifting drive 25, and after the product is completely immersed, the box cover 3 is separated from the box body 2 under the drive of the lifting drive 25, and the lifting assembly drives the tray 13 to rise to make the product leave the water surface, and by adjusting the pressure proportional valve 4 on the air pipe, the air pressure in the box body 2 can be automatically adjusted, so that the product can be immersed in water under different pressure environments. In the above design, the water tank can automatically complete the opening and closing of the box cover 3, and the pressure proportional valve 4 can be used to automatically adjust the air pressure in the box body 2, which effectively improves the automation level of the airtightness detection water tank and can meet the airtightness detection work of large quantities of products.

[0052] Furthermore, the box cover 3 in this embodiment is also connected to a water inlet pipe, the water inlet pipe is connected to a water inlet pump, the water pump is connected to a water source, and a liquid level sensor 11 for detecting the water level in the box body 2 is also installed in the box cover 3, and the liquid level sensor 11 is electrically connected to the water inlet pump.

[0053] Specifically, the water source in this embodiment may be a water tank or a water bucket storing water, etc., and this embodiment does not limit this.

[0054] It should be noted that, through the above design, the water pump can draw water from the water source into the box 2, and when the water in the box 2 reaches a preset liquid level, the liquid level sensor 11 sends a control signal to the water pump through the PLC control system to stop the water pump.

[0055] Furthermore, the box cover 3 in this embodiment is also connected to a water outlet pipe, and the water outlet pipe is connected to a water pump, and the water pump pumps water out of the box body 2 through the water pump pipe.

[0056] It should be noted that, in order to facilitate the replacement of water in the box body 2, a water outlet pipe is connected to the box cover 3 in this embodiment, and the water outlet pipe extends into the box body 2. When the water in the box body 2 needs to be replaced, the water pump is turned on and the water in the box body 2 is pumped out through the water outlet pipe.

[0057] Furthermore, the box cover 3 in this embodiment is provided with a locking assembly for locking the box body 2;

[0058] The locking assembly comprises a clamping cylinder 7, the clamping cylinder 7 is connected to a pair of clamping plates 8, and the clamping plates 8 are provided with a first locking block 9 and a second locking block 10;

[0059] The box body 2 is provided with a first locking portion 15 matched with the first locking block 9 and a second locking portion 16 matched with the second locking block 10;

[0060] When the box cover 3 covers the top opening of the box body 2 , the clamping finger cylinder 7 drives a pair of clamping plates 8 to approach each other, so that the first locking block 9 is engaged with the first locking portion 15 , and the second locking block 10 is engaged with the second locking portion 16 .

[0061] It should be noted that, through the above design, the box cover 3 can be completely locked on the box body 2, ensuring the tightness of the connection between the box cover 3 and the box body 2, and ensuring that the product can be immersed in a closed environment.

[0062] Furthermore, a linear module 6 is installed on the frame 1 in this embodiment, and the box body 2 is connected to the linear module 6 . The box body 2 can be moved to the bottom of the box cover 3 under the drive of the linear module 6 .

[0063] Specifically, the linear module 6 in this embodiment adopts a structure in which a motor is coupled with a lead screw for transmission.

[0064] It should be noted that, through the above design, when the product needs to be placed on the tray 13 of the box 2, the linear module 6 drives the box 2 to move to the loading position, thereby making it more convenient for the operator or the robot to place the product on the tray 13 of the box 2.

[0065] Furthermore, the lifting assembly in this embodiment includes a rotary drive member 5, a rotary shaft 17, a first support seat 18, a second support seat 19, a first connecting rod 20, a second connecting rod 21, a third connecting rod 22 and a lifting plate 23;

[0066] The side wall of the box body 2 is provided with a mounting through hole, the rotating shaft 17 is inserted into the mounting through hole and extends into the box body 2, and the first supporting seat 18 and the second supporting seat 19 are respectively located on opposite sides of the rotating shaft 17;

[0067] The first end of the first connecting rod 20 is hinged to the first supporting seat 18, and the second end of the first connecting rod 20 is hinged to the first end of the lifting plate 23;

[0068] The first end of the second connecting rod 21 is fixed to the rotating shaft 17, and the second end of the second connecting rod 21 is hinged to the middle part of the lifting plate 23;

[0069] The first end of the third connecting rod 22 is hinged to the second supporting seat 19, and the second end of the third connecting rod 22 is hinged to the second end of the lifting plate 23;

[0070] The lifting plate 23 is connected to the tray 13;

[0071] When the rotary drive member 5 is located outside the housing 2 and connected to the rotary shaft 17 to drive the rotary shaft 17 to rotate;

[0072] It should be noted that when the rotating shaft 17 is driven to rotate in a first rotation direction, specifically counterclockwise, the lifting plate 23 rises in a vertical direction to drive the tray 13 out of the water surface; when the rotating shaft 17 is driven to rotate in a second rotation direction, specifically clockwise, the lifting plate 23 descends in a vertical direction to drive the tray 13 to be immersed in water.

[0073] It should be further explained that the lifting assembly using the above structure can achieve the technical effect of stable lifting.

[0074] Furthermore, a first sealing ring 14 is provided at the inner edge of the top opening of the box body 2 in this embodiment;

[0075] The first sealing ring 14 includes a main body 1401 and a first sealing edge 1402 and a second sealing edge 1403 connected to the main body 1401 . The first sealing edge 1402 extends from the main body 1401 in an obliquely upward direction, and the second sealing edge 1403 extends from the main body 1401 in an obliquely downward direction.

[0076] Specifically, the cross section of the first sealing ring 14 in this embodiment is a Y-shaped structure.

[0077] It should be noted that the first sealing ring 14 is used to seal the gap between the box cover 3 and the box body 2 to ensure that a sealed environment is formed after the box cover 3 is closed on the box body 2.

[0078] When the box cover 3 is driven to cover the top opening of the box body 2, the edge of the box cover 3 will be pressed from top to bottom toward the first sealing edge 1402, so that the first sealing edge 1402 and the second sealing edge 1403 are completely fitted together, thereby enabling the first sealing ring 14 to achieve a better sealing effect.

[0079] Furthermore, in this embodiment, a second sealing ring 24 is sleeved on the rotating shaft 17 , and an outer edge of the second sealing ring 24 abuts against the hole wall of the mounting through hole.

[0080] It should be noted that the second sealing ring 24 is used to seal the gap between the rotating shaft 17 and the mounting through hole to ensure that a sealed environment is formed after the box cover 3 is closed on the box body 2 .

[0081] Furthermore, the second sealing ring 24 in this embodiment includes a sealing inner ring 2402 and a sealing outer ring 2401 arranged outside the sealing inner ring 2402, and a movable gap is left between the sealing inner ring 2402 and the sealing outer ring 2401, and the outer edge of the sealing outer ring 2401 abuts against the hole wall of the mounting through hole.

[0082] It should be noted that, through the above design, when the hole wall of the above-mentioned installation through hole will squeeze the sealing outer ring 2401 so that the sealing outer ring 2401 fits against the sealing inner ring 2402, the second sealing ring 24 can achieve a better sealing effect.

[0083] Furthermore, the lifting drive member 25 in this embodiment is specifically a lifting cylinder, and the rotating drive member 5 is specifically a servo motor.

[0084] The above is a detailed description of the specific structure of the water tank for air tightness detection in this embodiment. The water tank will be further described below with a specific working process. The specific working process of the water tank for air tightness detection in this embodiment is as follows:

[0085] The linear module 6 drives the box 2 to move to the loading position of the product, and the operator or the robot places the product into the positioning cavity 1301 of the tray 13 of the box 2. Then, the linear module 6 drives the box 2 to move to just below the box cover 3. At this time, the box cover 3 is pressed downward on the top opening of the box 2 under the drive of the lifting drive 25, and the locking assembly locks the box cover 3 on the box 2. Then, the air pump introduces gas into the box 2 through the air inlet pipe to increase the air pressure in the box 2, and adjusts the air pressure inside the box 2 through the pressure proportional valve 4 to make the air pressure meet the setting requirements. Then, the lifting assembly drives the tray 13 to immerse in water, and after a preset time period, the lifting assembly drives the tray 13 to leave the water surface. Finally, the locking assembly is unlocked, and the lifting drive 25 drives the box cover 3 to rise so that the box cover 3 leaves the box 2.

[0086] The above is a detailed introduction to an air tightness detection water box provided by the present invention. For a general technician in this field, according to the idea of ​​the embodiment of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation of the present invention.

Claims

1. A water tank for air tightness detection, characterized in that: It comprises a frame (1), a box body (2) for carrying water, and a box cover (3) for covering the top opening of the box body (2); The frame (1) is provided with a lifting drive member (25), the output end of the lifting drive member (25) is connected to the box cover (3), the box body (2) is located below the box cover (3), and the box cover (3) can be driven to move in a vertical direction to cover the top opening of the box body (2); The box cover (3) is connected to an air intake pipe, the air intake pipe is connected to an air pump, the air pump is connected to an air source, and the air intake pipe is connected to a pressure proportional valve (4); The box body (2) is installed with a lifting assembly, the lifting assembly is connected to a tray (13), and a positioning cavity (1301) for placing products is provided in the tray (13).

2. The air tightness detection water tank according to claim 1, characterized in that: The box cover (3) is also connected to a water inlet pipe, the water inlet pipe is connected to a water inlet pump, the water pump is connected to a water source, and a liquid level sensor (11) for detecting the water level in the box body (2) is also installed in the box cover (3), and the liquid level sensor (11) is electrically connected to the water inlet pump.

3. The water tank for air tightness detection according to claim 2, characterized in that: The box cover (3) is also connected to a water outlet pipe, and the water outlet pipe is connected to a water pump, and the water pump pumps water out of the box body (2) through the water pump pipe.

4. The water tank for air tightness detection according to claim 1, characterized in that: The box cover (3) is provided with a locking assembly for locking the box body (2); The locking assembly comprises a clamping finger cylinder (7), the clamping finger cylinder (7) is connected to a pair of clamping plates (8), and the clamping plates (8) are provided with a first locking block (9) and a second locking block (10); The box body (2) is provided with a first locking portion (15) cooperating with the first locking block (9) and a second locking portion (16) cooperating with the second locking block (10); When the box cover (3) is closed on the top opening of the box body (2), the clamping finger cylinder (7) drives a pair of clamping plates (8) to move closer to each other, so that the first locking block (9) is engaged with the first locking portion (15), and the second locking block (10) is engaged with the second locking portion (16).

5. The water tank for air tightness detection according to claim 1, characterized in that: A linear module (6) is also installed on the frame (1), and the box body (2) is connected to the linear module (6). The box body (2) can be moved to the position directly below the box cover (3) under the drive of the linear module (6).

6. The water tank for air tightness detection according to claim 1, characterized in that: The lifting assembly comprises a rotary drive member (5), a rotary shaft (17), a first support seat (18), a second support seat (19), a first connecting rod (20), a second connecting rod (21), a third connecting rod (22) and a lifting plate (23); A mounting through hole is provided on the side wall of the box body (2), the rotating shaft (17) is inserted into the mounting through hole and extends into the box body (2), and the first supporting seat (18) and the second supporting seat (19) are respectively located on opposite sides of the rotating shaft (17); The first end of the first connecting rod (20) is hinged to the first supporting seat (18), and the second end of the first connecting rod (20) is hinged to the first end of the lifting plate (23); The first end of the second connecting rod (21) is fixed to the rotating shaft (17), and the second end of the second connecting rod (21) is hinged to the middle part of the lifting plate (23); The first end of the third connecting rod (22) is hinged to the second supporting seat (19), and the second end of the third connecting rod (22) is hinged to the second end of the lifting plate (23); The lifting plate (23) is connected to the tray (13); The rotary drive member (5) is located outside the housing (2) and is connected to the rotary shaft (17) to drive the rotary shaft (17) to rotate; When the rotating shaft (17) is driven to rotate in a first rotating direction, the lifting plate (23) rises in a vertical direction to drive the tray (13) to leave the water surface; When the rotating shaft (17) is driven to rotate in a second rotating direction, the lifting plate (23) descends in a vertical direction to drive the tray (13) to immerse in water.

7. The water tank for air tightness detection according to claim 1, characterized in that: A first sealing ring (14) is provided on the inner edge of the top opening of the box body (2); The first sealing ring (14) comprises a main body (1401) and a first sealing edge (1402) and a second sealing edge (1403) connected to the main body (1401); the first sealing edge (1402) extends from the main body (1401) in an obliquely upward direction, and the second sealing edge (1403) extends from the main body (1401) in an obliquely downward direction.

8. The water tank for air tightness detection according to claim 6, characterized in that: A second sealing ring (24) is sleeved on the rotating shaft (17), and an outer edge of the second sealing ring (24) abuts against a hole wall of the mounting through hole.

9. The water tank for air tightness detection according to claim 8, characterized in that: The second sealing ring (24) comprises a sealing inner ring (2402) and a sealing outer ring (2401) arranged outside the sealing inner ring (2402), a movable gap is left between the sealing inner ring (2402) and the sealing outer ring (2401), and the outer edge of the sealing outer ring (2401) abuts against the hole wall of the installation through hole.

10. The water tank for air tightness detection according to claim 1, characterized in that: A pressure sensor (12) is also installed on the box cover (3); The pressure sensor (12) is used to detect the air pressure in the box (2).

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