Air tightness testing device based on waterproof technology

Abstract

The utility model relates to the technical field of air tightness testing devices, in particular to an air tightness testing device based on a waterproof technology, which comprises a testing table, a water tank is fixedly connected to the lower end of the surface of the testing table, a water pump is communicated to the upper end of the surface of the water tank, and a placement seat is fixedly connected to the top of the testing table; the driving mechanism comprises a liquid spraying pipeline which is rotatably connected to the top of the test board, and the surface of the liquid spraying pipeline is communicated with a plurality of arc-shaped nozzles; according to the device, reciprocating rotation of a liquid spraying pipeline is achieved through a reciprocating lead screw, a rack and a gear, then soapy water is evenly sprayed to a mold on a containing base through reciprocating annular movement of a plurality of arc-shaped spraying heads, and compared with an existing mode that soapy water needs to be evenly sprayed through rotation of the mold, a gap is likely to be generated at the joint of the mold and a cover plate, and the production efficiency is improved. According to the mode, the tightness of the joint of the mold and the cover plate is ensured, and the detection accuracy is further ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing devices, and in particular to an airtightness testing device based on waterproof technology. Background Technology

[0002] An airtightness testing device is used for airtightness testing. This device can perform online airtightness testing, waterproof testing, and sealing testing of products, and is mainly used on production lines. This device is typically used to evaluate the sealing performance of products, ensuring they can function properly without damage in water or other liquid environments.

[0003] A search revealed that the Chinese patent "An Airtightness Testing Device" (authorization announcement number CN220472897U) uses a hydraulic cylinder to press a pressure plate down onto the top of a mold. A rotary motor drives the mold to rotate at the bottom of the pressure plate, which in turn causes a water pump to draw soapy water from a tank and spray it evenly onto the outer wall of the rotating mold, inflating the mold cavity with air. At this point, bubbles will quickly appear at the leaking points, resulting in fast detection and intuitive test results.

[0004] In the aforementioned application, the mold's rotation causes wear on the cover plate, which in turn affects the tightness of the cover plate pressing down on the top of the mold, thereby affecting the inflation effect of the gas inside and the accuracy of the test.

[0005] Therefore, an airtightness testing device based on waterproof technology is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an airtightness testing device based on waterproof technology to solve the above-mentioned problems, thereby improving the problem that wear between the mold and the cover plate during rotation affects the tightness of the cover plate pressing down on the top of the mold.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: an airtightness testing device based on waterproof technology, comprising: a testing platform, a water tank fixedly connected to the lower end of the surface of the testing platform, a water pump connected to the upper end of the surface of the water tank, and a placement seat fixedly connected to the top of the testing platform; a driving mechanism, the driving mechanism including a spray pipe rotatably connected to the top of the testing platform, several arc-shaped nozzles connected to the surface of the spray pipe, the upper end of the surface of the water pump penetrating and extending into the interior of the spray pipe, a gear fixedly connected to the lower end of the surface of the spray pipe, a rack meshing with the surface of the gear, and a reciprocating screw rotatably connected to the inner wall of the testing platform, the surface of the reciprocating screw being disposed on the inner wall of the rack. Through the reciprocating screw, rack, and gear, the spray pipe reciprocates, thereby enabling multiple arc-shaped nozzles to move in a ring to evenly spray soapy water onto the mold on the placement seat. Compared to existing methods that require the mold to rotate for even spraying of soapy water, which can easily lead to gaps at the connection between the mold and the cover plate, this method ensures the tightness of the connection between the mold and the cover plate, thus guaranteeing the accuracy of the test.

[0008] Preferably, a rotating block is slidably connected to the top of the test platform, and a connecting rod is rotatably connected to the upper surface of the rotating block. A magnifying glass is fixedly connected to one end of the connecting rod, and a motor is fixedly connected to one end of the reciprocating screw. The surface of the motor is fixedly connected to the inner wall of the test platform. The magnifying glass magnifies the surface of the mold, facilitating clear observation of whether air bubbles have formed on the mold surface. The rotating block and connecting rod allow for adjustment of the magnifying glass's position, ensuring comprehensive observation of the mold.

[0009] Preferably, the top of the placement base is fixedly connected to a ring of anchor rods. These anchor rods ensure that the mold is centered on the placement base.

[0010] Preferably, the top of the placement seat is provided with a collection frame. The collection frame allows for the collection of soapy water flowing from the mold, reducing the area of ​​soapy water flowing onto the top of the test platform.

[0011] Preferably, a support rod is fixedly connected to the bottom of the spray pipe, and a ball bearing is rotatably connected to the bottom end of the support rod. The surface of the ball bearing is rotatably connected to the top of the test platform. The support rod and ball bearing provide support and limit the movement of the spray pipe, ensuring its stability during rotation.

[0012] Preferably, a sealed bearing is fixedly connected to the lower end of the inner wall of the spray pipe, and the upper end of the surface of the water pump is fixedly connected to the inner edge of the sealed bearing. The sealed bearing ensures that the soapy water inside the spray pipe will not leak during rotation.

[0013] Preferably, a slide rod is fixedly connected to the inner wall of the test platform, and the inner wall of the rack is slidably connected to the inner wall of the slide rod. The slide rod limits the reciprocating movement of the rack, preventing it from shifting during reciprocating motion.

[0014] The beneficial effects of the utility model are:

[0015] 1. By using a reciprocating lead screw, rack and pinion, the spray pipe is reciprocated and rotated, thereby enabling multiple arc-shaped nozzles to move in a reciprocating circular motion to evenly spray soapy water onto the mold on the placement seat. Compared with the existing method that requires the mold to rotate to evenly spray soapy water, which can easily cause gaps at the connection between the mold and the cover plate, this method ensures the tightness of the connection between the mold and the cover plate, thus ensuring the accuracy of the test.

[0016] 2. The magnifying glass allows for magnification of the mold surface, making it easier to clearly observe whether air bubbles have formed on the mold surface. The position of the magnifying glass can be adjusted by the rotating block and connecting rod, ensuring comprehensive observation of the mold. Attached Figure Description

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the test bench of this utility model;

[0019] Figure 3 for Figure 2 A magnified view of middle A;

[0020] Figure 4 This is a schematic diagram of the drive mechanism structure of this utility model.

[0021] In the diagram: 1. Test bench; 2. Water tank; 3. Water pump; 4. Drive mechanism; 41. Spray pipe; 42. Arc nozzle; 43. Support rod; 44. Gear; 45. Rack; 46. Reciprocating screw; 47. Motor; 48. Rotary block; 49. Connecting rod; 410. Magnifying glass; 411. Slide rod; 412. Ball bearing; 413. Collection frame; 414. Support rod; 415. Sealed bearing; 5. Placement seat. Detailed Implementation

[0022] 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.

[0023] When implementing: Figure 1-4As shown, the airtightness testing device based on waterproof technology includes: a test platform 1, a water tank 2 fixedly connected to the lower end of the surface of the test platform 1, a water pump 3 connected to the upper end of the surface of the water tank 2, and a placement seat 5 fixedly connected to the top of the test platform 1; a drive mechanism 4, which includes a spray pipe 41 rotatably connected to the top of the test platform 1, a plurality of arc-shaped nozzles 42 connected to the surface of the spray pipe 41, the upper end of the surface of the water pump 3 penetrating and extending into the interior of the spray pipe 41, a gear 44 fixedly connected to the lower end of the surface of the spray pipe 41, a rack 45 meshing with the surface of the gear 44, and a reciprocating screw 46 rotatably connected to the inner wall of the test platform 1, the surface of the reciprocating screw 46 being disposed on the inner wall of the rack 45.

[0024] The reciprocating screw 46 is a screw that enables the rack 45 to reciprocate without changing the direction of rotation of the main shaft. The reciprocating screw 46 is characterized by two threaded grooves with the same pitch and opposite directions of rotation, connected at both ends by a transition curve. Through the rotation of the screw, the side of the helical groove pushes the rack 45 placed in the helical groove to perform axial reciprocating motion.

[0025] Two electric push rods are fixedly connected to the upper surface of the test platform 1. The telescopic ends of the electric push rods are fixedly connected to rubber covers. An air pump is fixedly connected to the upper surface of the test platform 1. A bellows is connected to the surface of the air pump. The lower end of the bellows is fixedly connected to the bottom end of the rubber cover.

[0026] When an airtightness test is required on the mold, place the mold on top of the placement base 5. Manually activate the electric push rod. The extension end of the electric push rod moves downward, causing the rubber cover plate to move downward, so that the bottom end of the rubber cover plate presses down on the top of the mold. Manually start the air pump, and compressed gas is introduced into the sealed cavity formed by the mold and the rubber cover plate through the bellows. At this time, manually start the motor 47 and the water pump 3. The output shaft of the motor 47 rotates, driving the reciprocating screw 46 to rotate. The rotation of the reciprocating screw 46 drives the rack 45 to move back and forth. The reciprocating movement of the rack 45 drives the gear 44 to rotate back and forth. The reciprocating rotation of the gear 44 drives the spray pipe 41 to rotate back and forth. The reciprocating rotation of the spray pipe 41 drives multiple arc-shaped nozzles 42 to move back and forth in a circular motion. At this time, the water pump 3 draws soapy water from the water tank 2 and delivers it to the spray pipe 41. The soapy water in the spray pipe 41 is delivered to the multiple arc-shaped nozzles 42, which spray soapy water evenly onto the surface of the mold. After the soapy water spraying is completed, manually turn off the water pump 3. After the test is completed, manually turn off the electric push rod, air pump and motor 47.

[0027] like Figure 3 As shown, a rotating block 48 is slidably connected to the top of the test bench 1. A connecting rod 49 is rotatably connected to the upper surface of the rotating block 48. A magnifying glass 410 is fixedly connected to one end of the connecting rod 49. A motor 47 is fixedly connected to one end of the reciprocating screw 46. The surface of the motor 47 is fixedly connected to the inner wall of the test bench 1.

[0028] Rotate the connecting rod 49. The rotation of the connecting rod 49 will cause the magnifying glass 410 to rotate at a suitable angle within the rotating block 48 and push the rotating block 48. At this time, the magnifying glass 410 can make a comprehensive and clear observation of the mold surface. When there is a leak in a certain place of the mold, the soap water will quickly produce bubbles, which can detect the airtightness and waterproofness of the mold.

[0029] like Figure 3 As shown, the top of the placement seat 5 is fixedly connected with a ring of rods 414, and the top of the placement seat 5 is provided with a collection frame 413.

[0030] like Figure 4 As shown, a support rod 43 is fixedly connected to the bottom of the spray pipe 41, and a ball bearing 412 is slidably connected to the bottom end of the support rod 43. The surface of the ball bearing 412 is slidably connected to the top of the test bench 1.

[0031] like Figure 4 As shown, a sealed bearing 415 is fixedly connected to the lower end of the inner wall of the spray pipe 41, and the upper end of the surface of the water pump 3 is fixedly connected to the inner edge of the sealed bearing 415.

[0032] like Figure 4 As shown, a slide rod 411 is fixedly connected to the inner wall of the test bench 1, and the inner wall of the rack 45 is slidably connected to the inner wall of the slide rod 411.

[0033] In use, the three rods 414 center the mold at the top of the placement seat 5. The electric push rod is manually activated, and its telescopic end moves down, causing the rubber cover to move down and press the bottom of the rubber cover against the top of the mold. The air pump is manually started, and compressed gas is introduced into the sealed cavity formed by the mold and the rubber cover through the bellows. At this time, the motor 47 and the water pump 3 are manually started. The output shaft of the motor 47 rotates, which drives the spray pipe 41 to rotate back and forth through the reciprocating screw 46, rack 45 and gear 44. The reciprocating rotation of the spray pipe 41 drives multiple arc-shaped nozzles 42 to move back and forth in a circular motion. At this time, the water pump 3 draws soap water from the water tank 2 and delivers it to the multiple arc-shaped nozzles 42 through the spray pipe 41. The arc-shaped nozzles 42 spray soap water evenly on the surface of the mold. At this time, the surface of the mold is clearly observed through the magnifying glass 410. When there is a leak in the mold, bubbles will quickly appear in the soap water, which can detect the airtightness and waterproofness of the mold.

[0034] It should be noted that the test platform 1, electric push rod, air pump, water pump 3, sealed bearing 415 and motor 47 mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the electric push rod, air pump, water pump 3 and motor 47 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An airtightness testing device based on waterproof technology, characterized in that, include: Test bench (1), a water tank (2) is fixedly connected to the lower end of the surface of the test bench (1), a water pump (3) is connected to the upper end of the surface of the water tank (2), and a placement seat (5) is fixedly connected to the top of the test bench (1). The driving mechanism (4) includes a spray pipe (41) rotatably connected to the top of the test bench (1). The surface of the spray pipe (41) is connected to several arc-shaped nozzles (42). The upper end of the surface of the water pump (3) extends through and into the interior of the spray pipe (41). The lower end of the surface of the spray pipe (41) is fixedly connected to a gear (44). The surface of the gear (44) is meshed with a rack (45). The inner wall of the test bench (1) is rotatably connected to a reciprocating screw (46). The surface of the reciprocating screw (46) is located on the inner wall of the rack (45).

2. The airtightness testing device based on waterproof technology according to claim 1, characterized in that: A rotating block (48) is slidably connected to the top of the test bench (1). A connecting rod (49) is rotatably connected to the upper surface of the rotating block (48). A magnifying glass (410) is fixedly connected to one end of the connecting rod (49). A motor (47) is fixedly connected to one end of the reciprocating screw (46). The surface of the motor (47) is fixedly connected to the inner wall of the test bench (1).

3. The airtightness testing device based on waterproof technology according to claim 1, characterized in that: The top of the placement seat (5) is fixedly connected to a ring of rods (414).

4. The airtightness testing device based on waterproof technology according to claim 1, characterized in that: The top of the placement seat (5) is provided with a collection frame (413).

5. The airtightness testing device based on waterproof technology according to claim 1, characterized in that: The bottom of the spray pipe (41) is fixedly connected to a support rod (43), and the bottom end of the support rod (43) is rotatably connected to a ball bearing (412), the surface of which is rotatably connected to the top of the test bench (1).

6. The airtightness testing device based on waterproof technology according to claim 1, characterized in that: A sealed bearing (415) is fixedly connected to the lower end of the inner wall of the spray pipe (41), and the upper end of the surface of the water pump (3) is fixedly connected to the inner edge of the sealed bearing (415).

7. The airtightness testing device based on waterproof technology according to claim 1, characterized in that: The inner wall of the test bench (1) is fixedly connected to a slide rod (411), and the inner wall of the rack (45) is slidably connected to the inner wall of the slide rod (411).

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