Integrally-formed self-sealing bottle cap

Abstract

The utility model provides an integrally formed self-sealing type bottle cap which comprises a bottle cap body and an opening and closing cap capable of covering the bottle cap body, a discharging port is formed in the middle of the bottle cap body, a soft plug body is arranged at the discharging port of the bottle cap body, an extrusion seam for extruding materials in a bottle is formed in the middle of the plug body, and the opening and closing cap is arranged on the opening and closing cap. When materials in a bottle are extruded out, the plug body protrudes outwards to enable the extrusion seam to be opened, the bottle cap body is made of hard plastic, the plug body is made of soft plastic or soft silica gel, and the bottle cap body and the plug body are of an integrated structure manufactured through the double-shot molding technology. The utility model aims to overcome the defects in the prior art, provides the integrally formed self-sealing bottle cap, and the bottle cap is firmer in structure and better in sealing performance, and improves the production efficiency.

Description

Technical Field

[0001] The utility model specifically relates to an integrally formed self-sealing bottle cap. Background Art

[0002] A bottle used to store fluid or semi-fluid such as cream, ketchup, etc. is generally provided with a self-sealing bottle cap, which is usually provided with a soft rubber stopper sheet. The rubber stopper sheet is provided with extrusion holes or slits. When the bottle is squeezed, the rubber stopper sheet bulges due to the air pressure and the extrusion of the material in the bottle, and the holes or slits can be slightly opened, so that the material in the bottle can be squeezed out. Therefore, the rubber stopper sheet is generally made of soft plastic or soft silicone, and the self-sealing bottle cap needs to maintain sufficient mechanical strength. Therefore, the bottle cap body is usually made of hard plastic. In the production process, the rubber stopper sheet and the bottle cap body are first made separately, and then the rubber stopper sheet is installed on the bottle cap by assembly equipment or manual operation. For this structure, reference can be made to the patent application number CN202122675578.5 previously applied by the inventor and the patent named a new type of bottle cap. Since the above-mentioned traditional self-sealing bottle cap needs to assemble the rubber plug piece and the bottle cap body, there are still gaps between the parts after the product is manufactured, which makes the sealing of the product poor. In addition, assembly errors will occur during the assembly process of the product, which will eventually lead to the rubber plug piece being not firmly installed, the product quality is uneven, and the assembly process is time-consuming, which reduces the production efficiency of the product.

[0003] The utility model is produced based on the above-mentioned shortcomings. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide an integrally formed self-sealing bottle cap, which has a firmer structure, better sealing performance and improved production efficiency.

[0005] The utility model is realized through the following technical solutions:

[0006] An integrally formed self-sealing bottle cap comprises a bottle cap body and an opening and closing cover that can be covered thereon, wherein a discharge port is arranged in the middle of the bottle cap body, a soft plug body is arranged at the discharge port, an extrusion slit is arranged in the middle of the plug body for extruding the material in the bottle, when the material in the bottle is extruded, the plug body bulges outwards to open the extrusion slit, the bottle cap body is made of hard plastic, the plug body is made of soft plastic or soft silicone, and the bottle cap body and the plug body are an integral structure made by a two-color injection molding process.

[0007] As described above, the one-piece self-sealing bottle cap, the bottle cap body and the opening and closing cover are an integral structure made by a one-piece injection molding process.

[0008] As described above, the one-piece self-sealing bottle cap, the bottle cap body is provided with a discharge nozzle barrel surrounding the discharge port in the middle part, the plug body is arranged in the discharge nozzle barrel, the top of the plug body is provided with a first connecting ring plate extending outward, the plug body is also provided with a second connecting ring plate located on the lower side of the first connecting ring plate, an annular groove is formed between the first connecting ring plate and the second connecting ring plate, and the inner side wall of the discharge nozzle barrel is provided with an annular rib inserted into the annular groove.

[0009] As described above, the one-piece self-sealing bottle cap, the opening and closing cover is provided with a first sealing ring plate and a second sealing ring plate located outside the first sealing ring plate. When the opening and closing cover is closed on the bottle cap body, the first sealing ring plate is pressed against the first connecting ring plate, and the first sealing ring plate is sleeved on the outside of the discharge nozzle.

[0010] As described above, the integrally formed self-sealing bottle cap has a first protrusion on the outer side wall of the discharge nozzle, and a second protrusion on the inner side wall of the first sealing ring plate.

[0011] In the above-mentioned integrally formed self-sealing bottle cap, the extrusion seam is a cross-shaped seam.

[0012] As described above, the one-piece self-sealing bottle cap, the plug body is made of food-grade silicone or TPE / TPR material.

[0013] As described above, the one-piece self-sealing bottle cap has a first notch on the side wall of the bottle cap body, and a second notch corresponding to the first notch is provided on the opening and closing cover. When the opening and closing cover is closed on the bottle cap body, the first notch and the second notch are closed together to form an operating notch for manual operation.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The one-piece self-sealing bottle cap of the utility model is made into an integrated structure of the bottle cap body and the plug body by a two-color injection molding process. The one-time injection molding makes the processing convenient, thereby improving the product quality and production efficiency, and ensures that the bottle cap body and the plug body are naturally adhered together and difficult to fall off, thereby improving the stability of the connection between the parts and greatly improving the sealing performance. In addition, since the plug body does not need to be bonded or pressed into the bottle cap body, the structural design of the bottle cap body is more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a bottom view schematic diagram of the self-sealing bottle cap of the utility model;

[0017] Figure 2 It is a top view schematic diagram of the self-sealing bottle cap of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the self-sealing bottle cap of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the self-sealing bottle cap of the utility model in the closed state;

[0020] Figure 5 It is a cross-sectional schematic diagram of the self-sealing bottle cap of the utility model in a closed state. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] The directions described in the utility model specification, such as "up", "down", "left", "right", "front", "back", etc., are based on the directions of the drawings and are intended to facilitate the description of the relationship between the various components. They do not indicate the unique or absolute positional relationship between the various components. They are only one of the implementation methods of the utility model and are not a limitation on its implementation method.

[0023] Referring to the patent application number CN202122675578.5 previously applied by the inventor, the existing self-sealing bottle cap generally includes a bottle cap body 1 and an opening and closing cover 2 that can be covered thereon, and a discharge port 10 is provided in the middle of the bottle cap body 1. The present embodiment provides an integrally formed self-sealing bottle cap, such as Figures 1 to 5As shown, the bottle cap body 1 is provided with a soft plug body 3 at the discharge port 10, and an extrusion slit 30 for extruding the material in the bottle is provided in the middle of the plug body 3. When the material in the bottle is extruded, the plug body 3 bulges outward to open the extrusion slit 30. The bottle cap body 1 is made of hard plastic, and the plug body 3 is made of soft plastic or soft silicone. The bottle cap body 1 and the plug body 3 are an integrated structure made by a double-shot molding process, wherein the hard plastic can be made of hard polyethylene PE or polypropylene PP, and the soft plastic can be made of TPE / TPR material or soft polyethylene PE or polypropylene PP, and the soft silicone can be made of food-grade silicone, that is, an inorganic polymer colloid material formed by condensation of silicic acid, and is formed by double-shot molding. After two plastics of different colors or different materials are plasticized by two barrels, they are injection molded through the same nozzle simultaneously or successively, and two injection molding machines or two-color injection molding machines are used for molding. The plug body 3 is molded on the bottle cap body 1 by two-color injection molding, and the bottle cap body 1 and the plug body 3 are made into an integrated structure by the two-color injection molding process. One-time injection molding makes processing convenient, thereby improving product quality and production efficiency, and ensuring that the bottle cap body 1 and the plug body 3 are naturally adhered together and difficult to fall off, thereby improving the stability of the part connection and greatly improving the sealing performance. In addition, since the plug body 3 does not need to be bonded or pressed into the bottle cap body 1, the structural design of the bottle cap body 1 is more compact.

[0024] As a preference, Figure 3 and Figure 5 As shown, the bottle cap body 1 and the opening and closing cover 2 are an integrated structure made by a one-time injection molding process, that is, the bottle cap body 1 and the opening and closing cover 2 are an integrated structure made by one-time injection molding of the same material, making the product structure more compact.

[0025] In order to achieve better adhesion between the bottle cap body 1 and the plug body 3, as Figure 3 and Figure 5 As shown, a discharge nozzle barrel 11 surrounding a discharge port 10 is provided in the middle of the bottle cap body 1, the plug body 3 is arranged in the discharge nozzle barrel 11, a first connecting ring plate 31 extending outward is provided on the top of the plug body 3, the plug body 3 is also provided with a second connecting ring plate 32 located at the lower side of the first connecting ring plate 31, an annular groove 33 is formed between the first connecting ring plate 31 and the second connecting ring plate 32, and an annular rib 12 inserted into the annular groove 33 is provided on the inner side wall of the discharge nozzle barrel 11.

[0026] As a preferred solution of this embodiment, Figure 3 and Figure 5As shown, the opening and closing cover 2 is provided with a first sealing ring plate 21 and a second sealing ring plate 22 located on the outside of the first sealing ring plate 21. When the opening and closing cover 2 is closed on the bottle cap body 1, the first sealing ring plate 21 presses on the first connecting ring plate 31. The first sealing ring plate 21 is sleeved on the outside of the discharge nozzle 11, so that when the opening and closing cover 2 is closed on the bottle cap body 1, the first sealing ring plate 21 presses on the first connecting ring plate 31, generating appropriate damping and improving the feel of the closing operation.

[0027] As a preferred solution of this embodiment, Figure 3 and Figure 5 As shown, a first protrusion 111 is provided on the outer wall of the discharge nozzle barrel 11, and a second protrusion 211 is provided on the inner wall of the first sealing ring plate 21, so that when the opening and closing cover 2 is closed on the bottle cap body 1, the first sealing ring plate 21 presses on the first connecting ring plate 31 to generate appropriate elastic damping, and the second protrusion 211 on the first sealing ring plate 21 is engaged with the first protrusion 111 on the nozzle barrel 11 to achieve stability when the opening and closing cover 2 is closed and smoothness when it is opened.

[0028] As a preference, Figure 1 and Figure 2 As shown, the extrusion slit 30 is a cross-shaped slit.

[0029] As a preferred solution, in order to facilitate manual operation to open the opening and closing cover 2, as Figure 4 and Figure 5 As shown, a first notch 13 is provided on the side wall of the bottle cap body 1, and a second notch 23 corresponding to the first notch 13 is provided on the opening and closing cover 2. When the opening and closing cover 2 is closed on the bottle cap body 1, the first notch 13 and the second notch 23 are closed together to form an operating notch A for manual operation.

[0030] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An integrally formed self-sealing bottle cap, comprising a bottle cap body (1) and an opening and closing cover (2) that can be closed thereon, wherein a discharge port (10) is provided in the middle of the bottle cap body (1), and the characteristics are: The bottle cap body (1) is provided with a soft plug body (3) at the discharge port (10); an extrusion slit (30) for extruding the material in the bottle is provided in the middle of the plug body (3); when the material in the bottle is extruded, the plug body (3) bulges outwards so that the extrusion slit (30) opens; the bottle cap body (1) is made of hard plastic, and the plug body (3) is made of soft plastic or soft silicone; the bottle cap body (1) and the plug body (3) are an integrated structure made by a two-color injection molding process.

2. The one-piece self-sealing bottle cap according to claim 1, characterized in that: The bottle cap body (1) and the opening and closing cover (2) are an integrated structure made by a one-step injection molding process.

3. The one-piece self-sealing bottle cap according to claim 1, characterized in that: The bottle cap body (1) is provided with a discharge nozzle (11) surrounding a discharge port (10) in the middle thereof, the plug body (3) is arranged in the discharge nozzle (11), the top of the plug body (3) is provided with a first connecting ring plate (31) extending outward, the plug body (3) is also provided with a second connecting ring plate (32) located at the lower side of the first connecting ring plate (31), an annular groove (33) is formed between the first connecting ring plate (31) and the second connecting ring plate (32), and an annular convex rib (12) inserted into the annular groove (33) is provided on the inner side wall of the discharge nozzle (11).

4. The one-piece self-sealing bottle cap according to claim 3, characterized in that: The opening and closing cover (2) is provided with a first sealing ring plate (21) and a second sealing ring plate (22) located outside the first sealing ring plate (21); when the opening and closing cover (2) is closed on the bottle cap body (1), the first sealing ring plate (21) is pressed against the first connecting ring plate (31), and the first sealing ring plate (21) is sleeved on the outside of the discharge nozzle (11).

5. The one-piece self-sealing bottle cap according to claim 4, characterized in that: A first protrusion (111) is provided on the outer side wall of the discharge nozzle barrel (11), and a second protrusion (211) is provided on the inner side wall of the first sealing ring plate (21).

6. The one-piece self-sealing bottle cap according to claim 1, characterized in that: The extrusion slit (30) is a cross-shaped slit.

7. The one-piece self-sealing bottle cap according to claim 1, characterized in that: The plug body (3) is made of food-grade silicone or TPE / TPR material.

8. The one-piece self-sealing bottle cap according to claim 1, characterized in that: The side wall of the bottle cap body (1) is provided with a first notch (13), and the opening and closing cover (2) is provided with a second notch (23) corresponding to the first notch (13). When the opening and closing cover (2) is closed on the bottle cap body (1), the first notch (13) and the second notch (23) are closed together to form an operating notch (A) for manual operation.

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