Air tightness testing machine

Abstract

The utility model relates to the technical field of air tightness testing, and specifically discloses an air tightness testing machine, comprising: a main body; and also comprising: a moving part, which is arranged on the outer wall of the main body and is used to drive a circular lithium battery shell to move; a connecting part, which is arranged on the inner side of the moving part and is used to fix the circular lithium battery shell; a pushing component, which is provided with two groups of pushing components, and the two groups of pushing components are symmetrically distributed about the central axis of the connecting part, and the pushing component is arranged on one side of the main body and is used to push the circular lithium battery shell; the rotation of the dial plate can dial the positioning plate out a certain distance, and this distance can send the circular lithium battery shell to the most central position of the machine body table, and through the intermittent pushing of the positioning plate, the circular lithium battery shell to be tested can be continuously sent to the most central position of the machine body table, so as to perform continuous testing and automated testing of the machine body, improve testing efficiency, adapt to the needs of the existing market, and test products in large quantities.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness testing, in particular to an air tightness testing machine. Background Art

[0002] A round lithium battery shell is a shell used to encapsulate lithium batteries, usually made of metal materials. This shell has a round appearance and can be easily used with battery cells and other components. The round lithium battery shell needs to go through multiple processes during the manufacturing process, including cutting, stamping, welding, etc., to ensure its strength and sealing. After the round lithium battery shell is completed, it needs to be tested for airtightness by an airtightness tester to determine whether the product is leaking before proceeding to the next process. However, the existing airtightness testers are usually single tests, which are difficult to supply in the face of the large-scale testing needs of the existing market. For this reason, we propose an airtightness tester. Utility Model Content

[0003] The utility model aims to provide an airtightness testing machine to solve the problem of difficulty in supplying the large-volume testing demand in the existing market as mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an airtightness testing machine, comprising: a main body;

[0005] Also includes:

[0006] A moving part, which is arranged on the outer wall of the main body and is used to drive the circular lithium battery housing to move;

[0007] A connecting member, which is arranged on the inner side of the moving member and is used to fix the circular lithium battery housing;

[0008] The pushing assembly comprises two groups, the two groups of pushing assemblies are symmetrically distributed about the central axis of the connecting member, and the pushing assembly is arranged on one side of the main body and is used to push the circular lithium battery shell.

[0009] Wherein, a stamping plate is slidably connected to the upper end of the main body, and a booster pump is arranged at the bottom end of the stamping plate.

[0010] Among them, there are two moving parts, the two moving parts are symmetrically distributed about the central axis of the main body, the internal rotation of the two moving parts is connected with multiple rollers, the multiple rollers are equidistantly distributed inside the moving parts, and the outer walls of the rollers are closely attached to the outer wall of the connecting part.

[0011] Among them, there are two connecting parts, the rear end of the connecting part forms a sliding connection with the moving part, the shape of the connecting part is set to "L" shape, one of the connecting parts has a plurality of mounting rings fixedly connected at equal intervals on the inner wall, and the other connecting part has a fixing ring fixedly connected at equal intervals on the inner wall, one of the connecting parts is embedded in the other connecting part, and the position of the fixing ring corresponds to the position of the mounting ring.

[0012] Wherein, the bottom ends of the two moving parts are fixedly connected with sliders, the sliders are slidably connected with the main body, and the outer walls of the two sliders are threadedly connected with bidirectional screws.

[0013] Among them, the bottom end of one of the connecting members is slidably connected to a plurality of telescopic rods, the positions of the plurality of telescopic rods correspond to the positions of the mounting rings, the top ends of the plurality of telescopic rods are fixedly connected to mounting seats, and the bottom end of the mounting seats is fixedly connected to telescopic springs.

[0014] Among them, the pushing assembly includes a dial plate, a positioning plate, a positioning ring, a positioning groove, a dial groove and a dial block, the dial plate is movably connected to the main body, a positioning plate is arranged on the side of the dial plate, the positioning plate is slidably connected to the main body, the bottom end of the positioning plate is fixedly connected to the positioning ring, a plurality of positioning grooves are provided on the outer wall of the positioning plate, the outer size of the positioning ring is consistent with the inner size of the positioning groove, the spacing between the plurality of positioning grooves is the same as the spacing between the plurality of mounting rings, a dial groove is provided between every two adjacent positioning grooves, and a dial block is fixedly connected to the top end of the positioning plate, and the size of the dial block matches the size of the dial groove.

[0015] The utility model has at least the following beneficial effects:

[0016] The rotation of the dial plate can move the positioning plate a certain distance, and this distance can send the round lithium battery shell to the most central position of the body table. Through the intermittent push of the positioning plate, the round lithium battery shell to be tested can be continuously sent to the most central position of the body table, so as to facilitate continuous and automated testing of the body, improve test efficiency, adapt to the needs of the existing market, and test products in large quantities. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0019] Figure 3 This is a schematic diagram of the connection structure between the moving part and the slider of the utility model;

[0020] Figure 4 This is a schematic diagram of the cutaway structure of the mobile part of the utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure of two connecting pieces of the utility model;

[0022] Figure 6 This is a schematic diagram of the cutaway structure of the connector of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the propulsion component of the utility model.

[0024] In the figure: 001, main body; 002, moving part; 003, connecting part; 004, pushing assembly; 110, stamping plate; 120, booster pump; 210, roller; 220, slider; 230, bidirectional screw; 310, mounting ring; 320, fixing ring; 330, telescopic rod; 340, mounting seat; 350, telescopic spring; 401, dial plate; 402, positioning plate; 403, positioning ring; 404, positioning groove; 405, dial groove; 406, dial block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-7 , the utility model provides a technical solution:

[0027] Embodiment 1

[0028] An air tightness testing machine, comprising: a main body 001;

[0029] Also includes:

[0030] A moving part 002, which is disposed on the outer wall of the main body 001 and is used to drive the circular lithium battery housing to move;

[0031] Connecting member 003, which is disposed on the inner side of the moving member 002 and is used to fix the circular lithium battery housing;

[0032] The pushing component 004 is provided with two groups, and the two groups of pushing components 004 are symmetrically distributed about the central axis of the connecting member 003. The pushing component 004 is arranged on one side of the main body 001 and is used to push the circular lithium battery shell.

[0033] Among them, the staff can put the circular lithium battery shells one by one into the mounting ring 310 in the connector 003, and then start the motor at the rear end of the connector 003, thereby driving the two connectors 003 to move relative to each other, and the two moving parts 002 drive the circular lithium battery shells to move toward the center of the table top of the main body 001. Then, start the main body 001, the stamping plate 110 stamps downward, and the booster pump 120 is aimed at the opening of the circular lithium battery shell, and the gas with a set pressure is filled. The gas fills the circular lithium battery shell and is evenly distributed. The pressure drop value within a certain time interval is detected, and the leakage amount is calculated whether it is within the set range. After a certain period of time, the booster pump 120 restores the original air pressure value and returns to its original position. At the same time, the two sets of pushing components 004 start to operate, driving the two connectors 003 to move at the same time, and moving the next circular lithium battery shell to the center of the table top of the main body 001. The main body 001 starts to test the next circular lithium battery shell.

[0034] The upper end of the main body 001 is slidably connected to a stamping plate 110 , and a booster pump 120 is disposed at the bottom end of the stamping plate 110 .

[0035] Among them, after the main body 001 is started, the booster pump 120 starts to work. The booster pump 120 inflates the opening of the circular lithium battery shell at the most central position of the main body 001 table top, and detects whether the circular lithium battery shell is qualified based on the leakage amount.

[0036] There are two moving parts 002, which are symmetrically distributed about the central axis of the main body 001. The internal rotation of the two moving parts 002 is connected with multiple rollers 210, and the multiple rollers 210 are equidistantly distributed inside the moving parts 002. The outer walls of the rollers 210 are closely attached to the outer wall of the connecting part 003.

[0037] The setting of the roller 210 reduces the friction force generated by the connection member 003 moving inside the moving member 002, so that the connection member 003 can move quickly.

[0038] There are two connecting members 003, and the rear end of the connecting member 003 forms a sliding connection with the movable member 002. The shape of the connecting member 003 is set to be "L" shape. The inner wall of one of the connecting members 003 is fixedly connected with multiple mounting rings 310 at equal intervals, and the inner wall of the other connecting member 003 is fixedly connected with fixing rings 320 at equal intervals. One of the connecting members 003 is embedded in the other connecting member 003, and the position of the fixing ring 320 corresponds to the position of the mounting ring 310.

[0039] The bottom ends of the two moving parts 002 are fixedly connected with sliders 220 , and the sliders 220 form a sliding connection with the main body 001 . The outer walls of the two sliders 220 are threadedly connected with bidirectional screws 230 .

[0040] Among them, a motor is installed at the rear end of the bidirectional screw 230, and the motor drives the bidirectional screw 230 to drive the two sliders 220 on the outer wall to slide relative to each other on the main body 001, and then the moving part 002 drives the circular lithium battery shell inside the mounting ring 310 to move toward the center position of the table top of the main body 001. The two moving parts 002 are embedded and fixed to each other. At the same time, the positioning ring 403 of the other moving part 002 can support the upper and lower ends of the circular lithium battery shell to avoid the circular lithium battery shell from shaking left and right when the main body 001 is tested, resulting in unstable air pressure inside the circular lithium battery shell and inaccurate test results.

[0041] The bottom end of one of the connecting parts 003 is slidably connected to a plurality of telescopic rods 330 , the positions of the plurality of telescopic rods 330 correspond to the position of the mounting ring 310 , the top ends of the plurality of telescopic rods 330 are fixedly connected to a mounting seat 340 , and the bottom end of the mounting seat 340 is fixedly connected to a telescopic spring 350 .

[0042] When the stamping plate 110 stamps downward, the circular lithium battery shell on the mounting seat 340 moves downward, and the telescopic spring 350 can absorb the stamping pressure, thereby facilitating the buffering of the circular lithium battery shell to avoid excessive stamping pressure that causes deformation of the circular lithium battery shell.

[0043] The pushing component 004 includes a dial plate 401, a positioning plate 402, a positioning ring 403, a positioning groove 404, a dial groove 405 and a dial block 406. The dial plate 401 is movably connected to the main body 001. A positioning plate 402 is arranged on the side of the dial plate 401. The positioning plate 402 is slidably connected to the main body 001. The bottom end of the positioning plate 402 is fixedly connected to the positioning ring 403. A plurality of positioning grooves 404 are provided on the outer wall of the positioning plate 402. The outer dimensions of the positioning ring 403 coincide with the inner dimensions of the positioning groove 404. The spacing between the plurality of positioning grooves 404 is the same as the spacing between the plurality of mounting rings 310. A dial groove 405 is provided between every two adjacent positioning grooves 404. A dial block 406 is fixedly connected to the top end of the positioning plate 402. The size of the dial block 406 matches the size of the dial groove 405.

[0044] Among them, a small motor is installed at the rear end of the dial plate 401. When the small motor drives the dial plate 401 to rotate one circle, the dial block 406 automatically aligns with the dial slot 405 and slides inside the dial slot 405. As the dial block 406 rotates, the positioning plate 402 can be moved a certain distance, and this distance can send the circular lithium battery shell to the most central position of the body table. Through the intermittent push of the positioning plate 402, the circular lithium battery shell to be tested can be continuously sent to the most central position of the body table, so as to facilitate continuous testing and automated testing of the body, improve testing efficiency, adapt to the needs of the existing market, and test products in large quantities. At the same time, the positioning ring 403 rotates inside the positioning slot 404. When the dial block 406 is not inside the dial slot 405, the positioning ring 403 can fix the position of the positioning plate 402 through the inside of the positioning slot 404 to avoid the misalignment of the circular lithium battery shell during testing.

[0045] Embodiment 2

[0046] In the second embodiment, other structures remain unchanged. The difference from the first embodiment is that the mounting ring 310 and the positioning ring 403 can be disassembled and replaced according to the shape specifications of the test object to accommodate different test objects, so that the device can be used in a wide range.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airtightness testing machine, comprising: Subject(001); It is characterized by: also including: A moving part (002), the moving part (002) being arranged on the outer wall of the main body (001) and used for driving the circular lithium battery shell to move; A connecting member (003), the connecting member (003) being arranged on the inner side of the moving member (002) and being used for fixing the circular lithium battery housing; A pushing component (004), wherein the pushing component (004) is provided in two groups, and the two groups of pushing components (004) are symmetrically distributed about the central axis of the connecting member (003), and the pushing component (004) is provided on one side of the main body (001) and is used to push the circular lithium battery shell.

2. The airtightness testing machine according to claim 1, characterized in that: The upper end of the main body (001) is slidably connected to a stamping plate (110), and a booster pump (120) is disposed at the bottom end of the stamping plate (110).

3. The airtightness testing machine according to claim 1, characterized in that: Two movable members (002) are provided, and the two movable members (002) are symmetrically distributed about the central axis of the main body (001). The interiors of the two movable members (002) are rotatably connected with a plurality of rollers (210), and the plurality of rollers (210) are equidistantly distributed inside the movable members (002), and the outer walls of the rollers (210) are closely attached to the outer wall of the connecting member (003).

4. The airtightness testing machine according to claim 3, characterized in that: Two connecting members (003) are provided, and the rear end of the connecting member (003) forms a sliding connection with the moving member (002). The shape of the connecting member (003) is set to be "L"-shaped. The inner wall of one of the connecting members (003) is fixedly connected with a plurality of mounting rings (310) at equal intervals, and the inner wall of the other connecting member (003) is fixedly connected with a fixing ring (320) at equal intervals. One of the connecting members (003) is embedded in the other connecting member (003), and the position of the fixing ring (320) corresponds to the position of the mounting ring (310).

5. The airtightness testing machine according to claim 4, characterized in that: The bottom ends of the two moving parts (002) are fixedly connected with a slider (220), the slider (220) and the main body (001) form a sliding connection, and the outer walls of the two sliders (220) are threadedly connected with a bidirectional screw (230).

6. The airtightness testing machine according to claim 4, characterized in that: The bottom end of one of the connecting members (003) is slidably connected to a plurality of telescopic rods (330), the positions of the plurality of telescopic rods (330) correspond to the position of the mounting ring (310), the top ends of the plurality of telescopic rods (330) are fixedly connected to a mounting seat (340), and the bottom end of the mounting seat (340) is fixedly connected to a telescopic spring (350).

7. The airtightness testing machine according to claim 4, characterized in that: The pushing assembly (004) comprises a dial plate (401), a positioning plate (402), a positioning ring (403), a positioning groove (404), a dial groove (405) and a dial block (406); the dial plate (401) is movably connected to the main body (001); a positioning plate (402) is arranged on the side of the dial plate (401); the positioning plate (402) is slidably connected to the main body (001); a positioning ring (403) is fixedly connected to the bottom end of the positioning plate (402); the positioning plate The outer wall of (402) is provided with a plurality of positioning grooves (404), the outer dimensions of the positioning ring (403) match the inner dimensions of the positioning grooves (404), the spacing between the plurality of positioning grooves (404) is the same as the spacing between the plurality of mounting rings (310), a shifting groove (405) is provided between every two adjacent positioning grooves (404), a shifting block (406) is fixedly connected to the top end of the positioning plate (402), and the size of the shifting block (406) matches the size of the shifting groove (405).

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