Metal can with double-layer sealing end cover structure

Abstract

The utility model discloses a metal can with a double-layer sealing end cover structure. The metal can comprises a metal can body, an upper cover and a through groove. A bottle opening is formed in the top of the metal can body. The upper cover is arranged at a bottle opening in the top of the metal can body, and an inner cover is arranged in the upper cover; the through groove is formed in the surface of the inner cover; according to the utility model, the bottle opening is in contact with the inner cover, and the surface of the bottle opening is in contact with the sealing ring at the bottom of the inner cover, so that primary sealing is formed, and the leakage condition is avoided; through joint cooperative use of the piston plate and the sealing gasket, air in the upper cover can be discharged into the space between the upper cover and the bottle opening through the through groove, the interior of the upper cover is kept in a sealed state, in this way, air pressure in the upper cover can be increased, a certain air sealing effect is achieved, double-layer sealing is formed, and the interior of the metal can body is not prone to leakage; and the vertical plate and the positioning ring can be driven to move by utilizing the elastic force of the spring, so that the bottle opening is clamped and fixed by the positioning ring, and the fixation is firmer.

Description

Technical Field

[0001] The utility model relates to the technical field of metal cans, in particular to a metal can with a double-layer sealing end cover structure. Background Art

[0002] Metal cans provide a reliable packaging that can withstand various degrees of rough handling, have excellent barrier properties and high mechanical strength, and are widely used in daily life.

[0003] In existing technology, metal can end caps typically have only a single-layer sealing structure, which often does not seal the bottle tightly and easily causes leakage. This reduces the packaging quality of the metal can and the product, causing numerous problems in product production, processing, storage, transportation, and sales. In view of this, we have introduced a metal can with a double-layer sealing end cap structure. Utility Model Content

[0004] The purpose of the utility model is to provide a metal can with a double-layer sealed end cover structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a metal can with a double-layer sealed end cover structure, comprising: a metal can body, an upper cover and a through groove;

[0006] The top of the metal can body is provided with a bottle mouth, and the bottle mouth and the metal can body are integrally formed;

[0007] The upper cover is arranged at the bottle mouth on the top of the metal can body, and an inner cover is arranged inside the upper cover, and a fixed molding arrangement is formed between the inner cover and the upper cover;

[0008] The through groove is provided on the surface of the inner cover, and the through groove and the inner cover are integrally formed, and a sealing ring is provided on the inner side of the inner cover, and the setting of the sealing ring can form a seal;

[0009] A sealing mechanism is provided inside the metal can body, and the threaded rod of the sealing mechanism drives the piston plate and the sealing gasket to move downward, so that the sealing gasket contacts the surface of the inner cover to form a seal.

[0010] Preferably, the sealing mechanism includes a turntable connected to one end of the threaded rod, the turntable and the threaded rod are fixedly arranged, the piston plate is connected to the inside of the upper cover, the threaded rod is connected to the top of the piston plate, and the threaded rod passes through the upper cover, the sealing gasket is connected to the bottom of the piston plate, and the sealing gasket and the piston plate are fixedly arranged.

[0011] Preferably, a positioning mechanism is provided inside the upper cover, and the spring of the positioning mechanism drives the vertical plate and the positioning ring to move to the bottle mouth, so that the positioning ring fixes the bottle mouth.

[0012] Preferably, the positioning mechanism includes a cavity opened inside the upper cover, the cavity and the upper cover are integrally formed, the spring is connected to one side of the cavity, the vertical plate is connected to one side of the spring, the positioning ring is connected to one side of the vertical plate, and the positioning ring and the vertical plate are fixed.

[0013] Preferably, a threaded portion is provided on the surface of the bottle mouth, and the threaded portion and the bottle mouth are integrally formed.

[0014] Preferably, the surface of the positioning ring is provided with an arc portion, and the arc portion and the positioning ring are integrally formed.

[0015] Compared with the prior art, the present invention has the following advantages: when the upper cover is twisted and rotated, the upper cover is installed on the top of the metal can body, and the bottle mouth comes into contact with the inner cover, and the surface of the bottle mouth comes into contact with the sealing ring at the bottom of the inner cover, thereby forming a first seal and avoiding leakage;

[0016] By driving the threaded rod to rotate through the turntable, the piston plate and the sealing gasket can be driven to move downward inside the upper cover. The piston plate and the sealing gasket can be used together to discharge the air inside the upper cover through the through groove into the space between the upper cover and the bottle mouth. Since the upper cover is already in a sealed state at this time, the air pressure inside the upper cover can be increased, which has a certain airtight effect and forms a double-layer seal, which can further improve the sealing effect inside the upper cover, making it difficult for the metal can body to leak out, thereby increasing the packaging quality and facilitating subsequent production and processing as well as later storage, transportation and sales.

[0017] The positioning ring drives the vertical plate to move inside the cavity, and the vertical plate will squeeze the spring inside the cavity, compressing the spring. After the upper cover moves to the specified position, the elastic force of the spring itself can drive the vertical plate and the positioning ring to move, allowing the positioning ring to clamp and fix the bottle mouth, thereby fixing it more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the upper cover of the utility model in side section;

[0020] Figure 3 It is a structural diagram of the positioning mechanism of the utility model.

[0021] In the figure: 1. Metal can body; 2. Threaded part; 3. Bottle mouth; 4. Upper cover; 5. Piston plate; 6. Through groove; 7. Inner cover; 9. Turntable; 10. Threaded rod; 11. Sealing gasket; 12. Sealing ring; 13. Cavity; 14. Spring; 15. Vertical plate; 16. Positioning ring; 17. Arc-shaped part. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not 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 efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-3 The utility model provides a technical solution: a metal can with a double-layer sealed end cover structure, comprising: a metal can body 1, a bottle mouth 3 is provided on the top of the metal can body 1;

[0024] An upper cover 4 is provided at the bottle mouth 3 on the top of the metal can body 1, and an inner cover 7 is provided inside the upper cover 4;

[0025] A through groove 6 is provided on the surface of the inner cover 7, and a sealing ring 12 is provided on the inner side of the inner cover 7;

[0026] A sealing mechanism is provided inside the metal can body 1 , and the threaded rod 10 of the sealing mechanism drives the piston plate 5 and the sealing gasket 11 to move downward, so that the sealing gasket 11 contacts the surface of the inner cover 7 to form a seal.

[0027] The sealing mechanism includes a turntable 9 connected to one end of a threaded rod 10, and the turntable 9 and the threaded rod 10 are fixedly arranged. The piston plate 5 is connected to the inside of the upper cover 4, and the threaded rod 10 is connected to the top of the piston plate 5, and the threaded rod 10 passes through the upper cover 4. The sealing gasket 11 is connected to the bottom of the piston plate 5, and the sealing gasket 11 and the piston plate 5 are fixedly arranged.

[0028] A positioning mechanism is provided inside the upper cover 4 , and the spring 14 of the positioning mechanism drives the vertical plate 15 and the positioning ring 16 to move to the bottle mouth 3 , so that the positioning ring 16 fixes the bottle mouth 3 .

[0029] The positioning mechanism includes a cavity 13 opened inside the upper cover 4, and the cavity 13 and the upper cover 4 are integrally formed. The spring 14 is connected to one side of the cavity 13, the vertical plate 15 is connected to one side of the spring 14, and the positioning ring 16 is connected to one side of the vertical plate 15. The positioning ring 16 and the vertical plate 15 are fixedly arranged.

[0030] A threaded portion 2 is provided on the surface of the bottle mouth 3 , and the threaded portion 2 and the bottle mouth 3 are integrally formed.

[0031] An arc portion 17 is formed on the surface of the positioning ring 16 , and the arc portion 17 and the positioning ring 16 are integrally formed.

[0032] Specifically, when in use, the upper cover 4 is screwed on the bottle mouth 3 at the top of the metal can body 1 to rotate the upper cover 4, and the internal thread of the upper cover 4 is matched with the threaded portion 2 on the surface of the bottle mouth 3, so that the upper cover 4 can be installed on the top of the metal can body 1, and the bottle mouth 3 will come into contact with the inner cover 7, and the surface of the bottle mouth 3 will come into contact with the sealing ring 12 at the bottom of the inner cover 7, thereby forming a first seal to prevent leakage;

[0033] When the upper cover 4 rotates, the threaded portion 2 on the surface of the bottle mouth 3 comes into contact with the arc-shaped portion 17 on the surface of the positioning ring 16, pushing the positioning ring 16 to move, so that the positioning ring 16 drives the vertical plate 15 to move inside the cavity 13, and the vertical plate 15 squeezes the spring 14 inside the cavity 13, causing the spring 14 to compress. After the upper cover 4 moves to the designated position, the elastic force of the spring 14 itself drives the vertical plate 15 and the positioning ring 16 to move, allowing the positioning ring 16 to clamp and fix the bottle mouth 3, thereby making the fixation more secure.

[0034] Then, by rotating the turntable 9, the turntable 9 drives the threaded rod 10 to rotate. Since the threads on the surface of the threaded rod 10 match the threads inside the upper cover 4, the piston plate 5 and the sealing gasket 11 can be driven to move downward inside the upper cover 4. By using the piston plate 5 and the sealing gasket 11 together, the air inside the upper cover 4 can be discharged into the space between the upper cover 4 and the bottle mouth 3 through the through groove 6. Since the upper cover 4 is already in a sealed state at this time, the air pressure inside the upper cover 4 can be increased, which has a certain airtight effect and forms a double-layer seal, which can further improve the sealing effect inside the upper cover 4 and make it difficult for the metal can body 1 to leak out.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal can with a double-layer sealed end cover structure, characterized in that: include: A metal can body (1), wherein a bottle mouth (3) is provided on the top of the metal can body (1); An upper cover (4), the upper cover (4) being arranged at the bottle mouth (3) at the top of the metal can body (1), and an inner cover (7) being arranged inside the upper cover (4); A through groove (6), the through groove (6) is provided on the surface of the inner cover (7), and a sealing ring (12) is provided on the inner side of the inner cover (7); A sealing mechanism is provided inside the metal can body (1), and the threaded rod (10) of the sealing mechanism drives the piston plate (5) and the sealing gasket (11) to move downward, so that the sealing gasket (11) contacts the surface of the inner cover (7) to form a seal.

2. A metal can with a double-layer sealed end cover structure according to claim 1, characterized in that: The sealing mechanism comprises a turntable (9) connected to one end of a threaded rod (10), the piston plate (5) is connected to the inside of the upper cover (4), the threaded rod (10) is connected to the top of the piston plate (5), and the threaded rod (10) passes through the upper cover (4), and the sealing gasket (11) is connected to the bottom of the piston plate (5).

3. The metal can with a double-layer sealed end cover structure according to claim 1, characterized in that: A positioning mechanism is provided inside the upper cover (4), and the spring (14) of the positioning mechanism drives the vertical plate (15) and the positioning ring (16) to move to the bottle mouth (3), so that the positioning ring (16) fixes the bottle mouth (3).

4. The metal can with a double-layer sealed end cover structure according to claim 3, characterized in that: The positioning mechanism comprises a cavity (13) opened inside the upper cover (4), the spring (14) is connected to one side of the cavity (13), the vertical plate (15) is connected to one side of the spring (14), and the positioning ring (16) is connected to one side of the vertical plate (15).

5. The metal can with a double-layer sealed end cover structure according to claim 1, characterized in that: A threaded portion (2) is provided on the surface of the bottle mouth (3).

6. The metal can with a double-layer sealed end cover structure according to claim 4, characterized in that: The surface of the positioning ring (16) is provided with an arc-shaped portion (17).

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