Air tightness detection equipment

Abstract

The utility model relates to the technical field of air tightness detection, and discloses air tightness detection equipment which comprises a mounting seat and an air tightness detector, the mounting seat comprises a base and a top plate, a plurality of sliding columns are fixedly mounted between the base and the top plate, and a lifting plate is slidably mounted on the surface of each sliding column. A detachable first positioning mold and a detachable second positioning mold are fixedly installed on the upper surface and the lower surface of the lifting plate correspondingly, a first air injection hole and a second air injection hole are formed in the surface of the first positioning mold and the surface of the second positioning mold correspondingly, a telescopic air cylinder is fixedly installed in the top plate, and a pressing plate is fixedly installed at the telescopic end of the telescopic air cylinder. A lifting plate capable of moving up and down along a sliding column is arranged, a first positioning mold and a second positioning mold are arranged on the upper side and the lower side of the lifting plate, an upper cover and a bottom shell of a battery pack cover the molds on the upper side and the molds on the lower side respectively and then are pressed tightly, and air injection detection of air tightness is conducted through an air tightness detector. Therefore, the effect of simultaneously detecting the upper cover and the bottom shell of the battery pack is achieved.

Description

Technical Field

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

[0002] Detect the sealing of the object, that is, the gas filled into the tested object is stopped to stabilize and maintain the pressure after reaching the set value. During the test, the sensor is used to measure the change in the internal pressure of the tested object to determine the sealing state. For example, the prior art announcement number is CN213180577U, which discloses an airtightness detection device, including a control base, the four corners of the bottom surface of the control base are respectively provided with feet, a No. 1 power socket is provided on the right side of the front of the control base, and a control button is provided on the left side of the No. 1 power socket on the front of the control base. A cylinder is provided above the control base, and a telescopic tube is movably installed below the cylinder. A metal tube is penetrated above the cylinder, and an air pipe is movably connected to the top of the metal pipe. A spiral tube is provided at one end of the air pipe, and the air pipe is movably connected to the metal pipe through the spiral tube. The other end of the air pipe is connected to a detection box, and an adjustable sealing structure is installed between the control base and the cylinder. The utility model discloses an air tightness detection device, which can achieve the purpose of satisfying both internal pressure test and external pressure test through an adjustable sealing structure, thus achieving the best of both worlds.

[0003] When testing the air tightness of the battery pack shell, since the battery pack shell is divided into an upper cover and a bottom shell, the existing testing device can only test one separately and cannot test the upper cover and the bottom shell of the battery pack at the same time, which is very inconvenient to use and needs further improvement. Utility Model Content

[0004] The purpose of the utility model is to provide an airtightness detection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an airtightness detection device, comprising a mounting seat and an airtightness detector, the mounting seat comprising a base and a top plate, a plurality of sliding columns are fixedly installed between the base and the top plate, a lifting plate is slidably installed on the surface of the sliding columns, a removable first positioning mold and a second positioning mold are fixedly installed on the upper surface and the lower surface of the lifting plate, respectively, a first positioning mold and a second mold are provided on the surfaces of the first positioning mold and the second mold, respectively, a connecting pipe is fixedly installed on the surface of the lifting plate, and the connecting pipe is connected to the first and second air injection holes.

[0006] A telescopic cylinder is fixedly installed inside the top plate, and a pressing plate is fixedly installed on the telescopic end of the telescopic cylinder. The upper cover of the battery pack is closed on the surface of the first positioning mold, and the bottom shell of the battery pack is closed on the surface of the second positioning mold. The upper cover on the upper side is pressed downward by the pressing plate, and the airtightness tester performs air tightness test through the connecting pipe upper cover and bottom shell internal air injection. The first positioning mold and the second positioning mold are set on the upper and lower sides of the lifting plate, and the upper cover and bottom shell of the battery pack are respectively closed on the upper and lower molds, so as to facilitate the simultaneous detection of the upper cover and the bottom shell.

[0007] In some embodiments, there are four sliding columns, and the surface of each sliding column is sleeved with two sections of supporting springs, and the upper and lower sections of supporting springs are respectively pressed against the upper and lower surfaces of the lifting plate. After the detection is completed, the pressure plate is lifted and the lifting plate is automatically lifted.

[0008] In some embodiments, an air cavity running through the upper and lower parts is opened on the surface of the lifting plate, the connecting tube is connected to the air cavity, the first air injection hole runs through the upper and lower ends of the first positioning mold, the first air injection hole is connected to the air cavity, the second air injection hole runs through the upper and lower ends of the second positioning mold, the second air injection hole is connected to the air cavity, and the end faces of the first positioning mold and the second positioning mold are fixedly installed with sealing rubber strips to achieve sealing of the upper cover and the bottom shell.

[0009] In some embodiments, a T-shaped groove is provided on the upper surface of the base, a sliding block is slidably installed inside the T-shaped groove, a positioning seat is provided on the upper surface of the base, the positioning seat is fixedly connected to the upper surface of the sliding block, and a locking bolt is threadedly installed on the side of the base. The sliding block is pressed by the locking bolt, and the positioning seat can slide to change its position.

[0010] In some embodiments, a positioning groove is provided on the upper surface of the positioning seat, a limit block is slidably installed on the side wall of the positioning groove, an adjusting screw is threadedly installed on the side of the positioning seat, a handwheel is fixedly installed on one end of the adjusting screw, and the other end of the adjusting screw is rotatably connected to the limit block. There are multiple positioning grooves, and multiple bottom shells can be placed in different positioning grooves to realize multi-station detection.

[0011] In some embodiments, four adjustment legs are threadedly mounted on the lower surface of the base, and the four adjustment legs are respectively arranged at the four corners of the lower surface of the base to facilitate adjustment of the level of the base.

[0012] Beneficial Effects

[0013] The utility model provides an airtightness detection device, which has the following beneficial effects:

[0014] 1. The air tightness testing equipment is provided with a lifting plate that can move up and down along a sliding column, and a first positioning mold and a second positioning mold are provided on the upper and lower sides of the lifting plate. The upper cover and the bottom shell of the battery pack are respectively covered on the upper and lower molds, and then pressed tightly. The air tightness is tested by injecting gas through an air tightness tester, thereby achieving the effect of simultaneously testing the upper cover and the bottom shell of the battery pack. After the test, the lifting plate is lifted under the action of a supporting spring, which facilitates the loading and unloading of the upper cover and the bottom shell, and is more convenient to use.

[0015] 2. The air tightness testing equipment, by opening a plurality of positioning grooves on the positioning seat, facilitates the simultaneous installation of a plurality of bottom shells in different positioning grooves. By sliding the positioning seat, each bottom shell is moved in turn to the bottom of the second positioning mold to perform an air tightness testing operation. This design can load and unload materials in the idle positioning grooves during the air tightness pressure maintaining process, saving time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front section structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the front section structure of the lifting plate;

[0018] Figure 3 for Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a schematic diagram of the positioning seat structure from a top view.

[0020] In the figure: 1 base, 2 top plate, 3 sliding column, 4 lifting plate, 5 first positioning mold, 6 second positioning mold, 7 first air injection hole, 8 second air injection hole, 9 connecting pipe, 10 telescopic cylinder, 11 pressure plate, 12 upper cover, 13 bottom shell, 14 support spring, 15 air cavity, 16 sealing rubber strip, 17 sliding block, 18 positioning seat, 19 locking bolt, 20 positioning groove, 21 limit block, 22 adjusting screw, 23 adjusting leg, 24 air tightness detector. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4The utility model provides a technical solution: an air tightness detection device, including a mounting base and an air tightness detector 24, the mounting base includes a base 1 and a top plate 2, four adjustment legs 23 are threadedly installed on the lower surface of the base 1, and the four adjustment legs 23 are respectively arranged at the four corners of the lower surface of the base 1.

[0023] A plurality of sliding columns 3 are fixedly installed between the base 1 and the top plate 2, and a lifting plate 4 is slidably installed on the surface of the sliding columns 3. There are four sliding columns 3, and the surface of each sliding column 3 is sleeved with two sections of supporting springs 14, and the upper and lower sections of the supporting springs 14 are respectively pressed against the upper and lower surfaces of the lifting plate 4.

[0024] The upper and lower surfaces of the lifting plate 4 are respectively fixedly installed with a removable first positioning mold 5 and a second positioning mold 6, and the surfaces of the first positioning mold 5 and the second mold are respectively provided with a first gas injection hole 7 and a second gas injection hole 8. A connecting pipe 9 is fixedly installed on the surface of the lifting plate 4, and the connecting pipe 9 is connected with the first gas injection hole 7 and the second gas injection hole 8.

[0025] Specifically, the first positioning mold 5 and the second positioning mold 6 are fixedly connected to the lifting plate 4 by bolts. An air cavity 15 is opened on the surface of the lifting plate 4 and passes through it from top to bottom. The connecting pipe 9 is connected to the air cavity 15. The first air injection hole 7 passes through the upper and lower ends of the first positioning mold 5 and is connected to the air cavity 15. The second air injection hole 8 passes through the upper and lower ends of the second positioning mold 6 and is connected to the air cavity 15. The end faces of the first positioning mold 5 and the second positioning mold 6 are fixedly installed with sealing rubber strips 16.

[0026] A telescopic cylinder 10 is fixedly installed inside the top plate 2, and a pressing plate 11 is fixedly installed at the telescopic end of the telescopic cylinder 10. The upper cover 12 of the battery pack is covered on the surface of the first positioning mold 5, and the bottom shell 13 of the battery pack is covered on the surface of the second positioning mold 6. The upper cover 12 on the upper side is pressed downward by the pressing plate 11, and the airtightness detector 24 performs air tightness detection by injecting air into the upper cover 12 and the bottom shell 13 through the connecting pipe 9. After reaching the set value, the inflation is stopped to stabilize and maintain the pressure. During the test, the airtightness detector 24 measures the change in the internal pressure of the object to be tested through the internal sensor to determine the sealing state.

[0027] The air tightness testing equipment is provided with a lifting plate 4 that can move up and down along the sliding column 3, and a first positioning mold 5 and a second positioning mold 6 are provided on the upper and lower sides of the lifting plate 4. The upper cover 12 and the bottom shell 13 of the battery pack are respectively covered on the upper and lower molds, and then pressed tightly. The air tightness is tested by injecting gas through the air tightness tester 24, so as to achieve the effect of simultaneously testing the upper cover 12 and the bottom shell 13 of the battery pack. After the test is completed, the telescopic cylinder 10 is shortened, the pressing plate 11 is lifted, and the lifting plate 4 is lifted under the action of the supporting spring 14, so that the loading and unloading of the upper cover 12 and the bottom shell 13 are convenient, and the use is more convenient.

[0028] In this embodiment, a T-shaped groove is provided on the upper surface of the base 1, and a sliding block 17 is slidably installed inside the T-shaped groove. A positioning seat 18 is provided on the upper surface of the base 1, and the positioning seat 18 is fixedly connected to the upper surface of the sliding block 17. A locking bolt 19 is threadedly installed on the side of the base 1, and the sliding block 17 is tightened by the locking bolt 19.

[0029] A positioning groove 20 is provided on the upper surface of the positioning seat 18, and a limit block 21 is slidably installed on the side wall of the positioning groove 20. An adjusting screw 22 is threadedly installed on the side of the positioning seat 18, and a hand wheel is fixedly installed on one end of the adjusting screw 22, and the other end of the adjusting screw 22 is rotatably connected to the limit block 21. There are multiple positioning grooves 20, and multiple bottom shells 13 can be placed in different positioning grooves 20. During use, the adjusting screw 22 is rotated to control the position of the limit block 21 and adjust the size of the inner cavity of the positioning groove 20 so that the bottom shell 13 is placed exactly in the positioning groove 20.

[0030] The air tightness testing equipment, by opening a plurality of positioning grooves 20 on the positioning seat 18, facilitates the simultaneous installation of a plurality of bottom shells 13 in different positioning grooves 20, and by sliding the positioning seat 18, each bottom shell 13 is moved in turn to the bottom of the second positioning mold 6 for air tightness testing. This design facilitates loading and unloading operations on idle positioning grooves 20 during the air tightness pressure maintaining process, thereby saving time and improving work efficiency.

[0031] Although 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 detection device, comprising a mounting seat and an airtightness detection instrument (24), characterized in that: The mounting seat comprises a base (1) and a top plate (2); a plurality of sliding columns (3) are fixedly mounted between the base (1) and the top plate (2); a lifting plate (4) is slidably mounted on the surface of the sliding columns (3); a first positioning mold (5) and a second positioning mold (6) which are detachable are fixedly mounted on the upper surface and the lower surface of the lifting plate (4); a first air injection hole (7) and a second air injection hole (8) are respectively opened on the surfaces of the first positioning mold (5) and the second mold; a connecting pipe (9) is fixedly mounted on the surface of the lifting plate (4); the connecting pipe (9) is connected to the first air injection hole (7) and the second air injection hole (8); A telescopic cylinder (10) is fixedly installed inside the top plate (2), and a pressing plate (11) is fixedly installed at the telescopic end of the telescopic cylinder (10). The upper cover (12) of the battery pack is covered on the surface of the first positioning mold (5), and the bottom shell (13) of the battery pack is covered on the surface of the second positioning mold (6). The upper cover (12) on the upper side is pressed downward by the pressing plate (11), and the air tightness detector (24) injects air into the upper cover (12) and the bottom shell (13) through the connecting pipe (9) to perform air tightness detection.

2. The airtightness detection device according to claim 1, characterized in that: There are four sliding columns (3), and the surface of each sliding column (3) is sleeved with two sections of supporting springs (14), and the upper and lower sections of supporting springs (14) respectively press against the upper and lower surfaces of the lifting plate (4).

3. The airtightness detection device according to claim 2, characterized in that: The surface of the lifting plate (4) is provided with an air cavity (15) which passes through the upper and lower parts, the connecting pipe (9) is connected to the air cavity (15), the first air injection hole (7) passes through the upper and lower ends of the first positioning mold (5), the first air injection hole (7) is connected to the air cavity (15), the second air injection hole (8) passes through the upper and lower ends of the second positioning mold (6), the second air injection hole (8) is connected to the air cavity (15).

4. The airtightness detection device according to claim 3, characterized in that: Sealing rubber strips (16) are fixedly mounted on the end surfaces of the first positioning mold (5) and the second positioning mold (6).

5. The airtightness detection device according to claim 4, characterized in that: The upper surface of the base (1) is provided with a T-shaped slide groove, a sliding block (17) is slidably installed inside the T-shaped slide groove, a positioning seat (18) is provided on the upper surface of the base (1), the positioning seat (18) is fixedly connected to the upper surface of the sliding block (17), and a locking bolt (19) is threadedly installed on the side of the base (1), and the sliding block (17) is pressed by the locking bolt (19).

6. The airtightness detection device according to claim 5, characterized in that: The upper surface of the positioning seat (18) is provided with a positioning groove (20), a limit block (21) is slidably mounted on the side wall of the positioning groove (20), an adjusting screw (22) is threadedly mounted on the side surface of the positioning seat (18), a hand wheel is fixedly mounted on one end of the adjusting screw (22), and the other end of the adjusting screw (22) is rotatably connected to the limit block (21).

7. The airtightness detection device according to claim 6, characterized in that: The number of the positioning grooves (20) is multiple, and multiple bottom shells (13) can be placed in different positioning grooves (20).

8. An airtightness detection device according to any one of claims 1 to 7, characterized in that: Four adjusting legs (23) are threadedly mounted on the lower surface of the base (1), and the four adjusting legs (23) are respectively arranged at the four corners of the lower surface of the base (1).

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