Lead-acid battery airtightness detection device

Abstract

A lead-acid battery airtightness detection device comprises a pressing plate and a pressing block which can ascend and descend along with a driving device. Vent holes in one-to-one correspondence with the battery cells are formed in the middle of the pressing plate; the vent holes are in one-to-one butt joint with air pipes through air pipe joints; a first long-strip-shaped hole extending in the length direction of the pressing plate is formed in one end of the pressing plate. A second long-strip-shaped hole is formed in one end of the pressing block, and a second connecting block capable of vertically ascending and descending along with a telescopic rod of the second air cylinder is arranged below the other end of the pressing block. The bolt sequentially penetrates through the gasket, the second long-strip-shaped hole and the first long-strip-shaped hole, the nut is installed at the rear end of the bolt, and the pressing block is fixed to the pressing plate. Rubber pads are arranged below the second connecting block and the pressing plate. The switching operation difficulty is reduced, and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid batteries, and in particular relates to an airtightness detection device for lead-acid batteries. Background Art

[0002] The airtightness detection process in the battery production process refers to the process of pressing or extracting air into or out of each single cell of the battery after the slot cover is sealed and the terminals are welded (there are 6 single cells inside a normal battery. At this time, the battery is connected to the outside world through the 6 acid filling holes and status display holes of the single cells, and the 6 single cells are separated by partitions) so that the difference between the internal air pressure and the atmospheric pressure is equal to a specified value (for example, 20kPa is required for starting lead-acid batteries). The pressure gauge reading (pointer) should not drop within 3 to 5 seconds. This is used to detect whether the slot and cover are not sealed tightly or the terminals are not sealed tightly.

[0003] The air tightness detection device disclosed in the prior art includes a frame, a positioning plate and an inflation device are provided on the frame, the inflation device includes an inflation tube, a sealing device is provided at the lower part of the positioning plate, the sealing device includes a base plate, a plurality of inflation heads connected to the inflation tube are provided on the base plate, a positioning block is provided on the outer side of the base plate, and a sealing gasket is provided on the base plate and the positioning block.

[0004] Since the positions of the status display holes of different battery models are different, some batteries may not have status display holes. When the existing airtight detection device is used, it is necessary to switch the substrate with positioning blocks in different positions as a whole to achieve the sealing of the status display holes in different positions. The process is relatively cumbersome and extremely inconvenient. There is also a risk of replacement errors, which increases the difficulty and time of replacement. Summary of the invention

[0005] The purpose of the utility model is to solve the above-mentioned deficiencies in the prior art and provide a lead-acid battery airtightness detection device to reduce the difficulty of switching operations and improve efficiency.

[0006] The technical solution of the utility model is: a lead-acid battery airtightness detection device, including a pressing plate and a pressing block which can be raised and lowered along with a driving device;

[0007] The middle part of the pressing plate is provided with ventilation holes corresponding to the battery cells one by one, and each ventilation hole is connected to the air pipe one by one through the air pipe joint;

[0008] One end of the pressing plate is provided with a long hole 1 extending along the length direction of the pressing plate;

[0009] One end of the pressure block is provided with a second long hole, and the other end is provided with a second connecting block below which can be lifted vertically along with the second telescopic rod of the cylinder;

[0010] The bolts are passed through the gasket, the second strip hole and the rear end of the first strip hole in sequence, and nuts are installed to fix the pressing block on the pressing plate;

[0011] Rubber pads are provided under the connecting block 2 and the pressing plate.

[0012] The driving device comprises a telescopic cylinder and a connecting frame for connecting the telescopic cylinder and the pressing plate;

[0013] The cylinder barrel of the telescopic cylinder is installed on the frame machine, and the telescopic rod of the telescopic cylinder is connected to the upper end of the connecting frame.

[0014] There are two telescopic cylinders, and the two telescopic cylinders are arranged side by side.

[0015] The connecting frame comprises a connecting plate, the lower end of the connecting plate is connected to the pressing plate via two connecting columns, and the upper end of the connecting plate is assembled with the fixing plate.

[0016] The two ends of the pressure plate are provided with stepped holes for mounting connecting columns, the large hole portion of the stepped hole matches the connecting column, and the bolt passes through the small hole portion at the lower end and is positioned in the threaded countersunk hole at the end of the connecting column.

[0017] When the second cylinder is retracted, the lower end surface of the second connecting block is not lower than the lower end surface of the pressing plate.

[0018] The utility model can conveniently adjust the blocking device when switching lead-acid batteries of different models to match the battery model after switching, thereby reducing the difficulty of switching operation and improving efficiency.

[0019] It can realize faster adjustment of airtightness detection device when switching production of different types of lead-acid batteries, reduce operation difficulty and improve efficiency.

[0020] The airtightness detection device can directly adjust the front, back, left, and right positions of the pressing block when switching to produce different types of batteries, thereby changing the position of the connecting block to achieve the blocking of the blocking status display holes at different positions without switching the mold as a whole, thus reducing the switching time and improving production efficiency. In addition, the risk of mold replacement errors is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the main view of airtightness detection;

[0022] Figure 2 This is the platen view;

[0023] Figure 3 This is the briquetting view;

[0024] In the figure, 1, frame; 2, fixing plate; 3, connecting plate; 4, connecting column; 5, pressure plate; 6, telescopic cylinder; 9, cylinder 2; 10, pressure block; 11, connecting block 2; 12, rubber pad 1; 13, air pipe 1; 14, through hole; 15, nut and bolt; 16, gasket; 17, vent hole; 19: step hole; 20, rubber pad 2. DETAILED DESCRIPTION

[0025] Figure 1 There are two telescopic cylinders 6, which are fixed side by side between the frame 1 and the fixed plate 2, and the fixed plate 2 is driven to move up and down by the telescopic cylinders 6; threaded holes are opened at corresponding positions of the fixed plate 2 and the connecting plate 3, and are connected and fixed by bolts installed in the corresponding threaded holes; the upper end of the connecting column 4 is fixedly connected to the connecting plate 3, and the lower end of the connecting column 4 is installed in the step hole 19 at both ends of the pressure plate 5, the large hole part of the step hole 19 cooperates with the connecting column 4, and the middle part of the lower end surface of the connecting column 4 is provided with a threaded countersunk hole, and the bolt passes through the small hole part of the lower end and is positioned in the threaded countersunk hole at the end of the connecting column 4.

[0026] Figure 2 In the figure, there are vent holes 17 in the middle of the pressing plate 5 corresponding to the battery cells one by one, which can be used as a channel for pressing or extracting air into or from each battery slot. Each vent hole 17 is connected to an air pipe 13 through an air pipe joint. One end of the pressing plate 5 is provided with a long hole 1 extending along the length direction of the pressing plate 5 for installing the pressing block 10, and the rubber pad 12 is glued to the pressing plate 5.

[0027] Figure 2 , Figure 3 In the embodiment, one end of the pressing block 10 is provided with a second long hole 14, and a bolt 15 is sequentially passed through the gasket 16, the second long hole 14 and the rear end of the first long hole, and a nut is installed to fix the pressing block 10 on the pressing plate 5. Below the other end of the pressing block 10 is a connecting block 11 that can be vertically lifted and lowered with the telescopic rod of the second cylinder 9, the second cylinder 9 is fixed on the pressing block 10, and the telescopic rod of the second cylinder 9 passes downward through the through hole on the pressing block 10 and then the top end is connected to the connecting block 11, and the rubber pad 20 is glued to the connecting block 11.

[0028] After the battery completes the terminal casting and welding process, it moves to the bottom of the airtight detection device along with the conveyor belt. When the battery reaches the airtight detection position and stops, the fixed plate 2, the connecting plate 3, the connecting column 4, the pressing plate 5 and the pressing block 10 move downward under the action of the telescopic cylinder 6, so that the rubber pad 12 at the lower end of the pressing plate 5 is tightly pressed on the upper part of the battery cover, and then the cylinder 2 9 is started to make the rubber pad 20 at the lower end of the connecting block 2 11 reach the installation hole of the battery cover status display, and then the compressed gas is introduced through the corresponding air pipe 13, the vent hole 17 and the acid addition hole on the battery cover for detection. After the end, the battery reaches the next process.

Claims

1. A lead-acid battery airtightness detection device, characterized in that: It comprises a pressing plate (5) and a pressing block (10) which can be raised and lowered along with the driving device; The middle part of the pressing plate (5) is provided with ventilation holes (17) corresponding to the cells of the battery slots one by one, and each ventilation hole (17) is connected to the air pipe (13) one by one through an air pipe joint; One end of the pressing plate (5) is provided with a long hole extending along the length direction of the pressing plate (5); One end of the pressing block (10) is provided with a second long hole (14), and the lower part of the other end is provided with a second connecting block (11) which can be vertically raised and lowered along with the telescopic rod of the second cylinder (9); The bolt (15) is passed through the gasket (16), the second long hole (14) and the rear end of the first long hole in sequence, and a nut is installed to fix the pressing block (10) on the pressing plate (5); The second connecting block (11) and the pressing plate (5) are both provided with rubber pads.

2. A lead-acid battery airtightness detection device according to claim 1, characterized in that: The driving device comprises a telescopic cylinder (6) and a connecting frame for connecting the telescopic cylinder (6) and the pressing plate (5); The cylinder barrel of the telescopic cylinder (6) is mounted on the frame machine (1), and the telescopic rod of the telescopic cylinder (6) is connected to the upper end of the connecting frame.

3. A lead-acid battery airtightness detection device according to claim 2, characterized in that: There are two telescopic cylinders (6), and the two telescopic cylinders (6) are arranged side by side.

4. A lead-acid battery airtightness detection device according to claim 2, characterized in that: The connecting frame comprises a connecting plate (3), the lower end of the connecting plate (3) and the pressing plate (5) are connected to each other via two connecting columns (4), and the upper end of the connecting plate (3) is assembled with the fixing plate (2).

5. A lead-acid battery airtightness detection device according to claim 4, characterized in that: The two ends of the pressure plate (5) are provided with stepped holes (19) for mounting the connecting column (4). The large hole portion of the stepped hole (19) matches the connecting column (4). The bolt passes through the small hole portion at the lower end and is positioned in the threaded countersunk hole at the end of the connecting column (4).

6. A lead-acid battery airtightness detection device according to claim 1, characterized in that: When the second cylinder (9) is retracted, the lower end surface of the second connecting block (11) is not lower than the lower end surface of the pressing plate (5).

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