Suction-back type dispensing valve for cosmetic container

Abstract

The invention discloses a back suction type dispensing valve for a cosmetic container. The back suction type dispensing valve comprises an outer valve body; the inner valve element is arranged in the outer valve body; a glue outlet runner is arranged in the inner valve element, one end of the glue outlet runner extends to the side wall of the inner valve element to form a glue inlet, and the other end of the glue outlet runner extends to the end face of the inner valve element to form a glue outlet. A piston part is arranged at one end of the inner valve element, a cavity used for containing the piston part is formed in the outer valve body, a first air inlet hole is formed in the side wall of the cavity, and a second air inlet hole is formed in the top opening of the cavity; the outer valve body is provided with a glue inlet hole and a back suction hole which are sequentially arranged along a straight line. Compared with the prior art, the problems that an existing glue dispensing valve has the glue leakage condition, and the glue dispensing amount cannot be precisely controlled are solved.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetic container assembly, and in particular to a back-suction type glue dispensing valve for a cosmetic container. Background Art

[0002] Cosmetic containers are usually composed of multiple parts. During the assembly process, glue is first dispensed using a glue dispensing machine, and then glue is used to splice and fix the parts together.

[0003] Due to the small size of cosmetic containers, the amount of glue required for a single dispensing is small, and the amount of glue needs to be precisely controlled during the dispensing process. However, the existing dispensing valves of dispensing machines have problems such as poor back suction and glue leakage from the needle, which can easily cause the glue amount to be uncontrollable, and glue leakage from the needle can easily contaminate the product. Summary of the invention

[0004] The purpose of the present invention is to provide a back-suction type glue dispensing valve for cosmetic containers to solve the problems of glue leakage and inability to precisely control the glue dispensing amount in existing glue dispensing valves.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a back-suction type dispensing valve for a cosmetic container, comprising:

[0006] Outer valve body;

[0007] An inner valve core is disposed in the outer valve body;

[0008] Among them, a glue outlet channel is arranged inside the inner valve core, one end of the glue outlet channel extends to the side wall of the inner valve core to form a glue inlet, and the other end of the glue outlet channel extends to the end surface of the inner valve core to form a glue outlet;

[0009] A piston portion is provided at one end of the inner valve core, a cavity for receiving the piston portion is provided on the outer valve body, a first air inlet hole is provided on the side wall of the cavity, and a second air inlet hole is formed by an opening at the top of the cavity;

[0010] The outer valve body is provided with glue inlet holes and back-suction holes which are arranged in sequence along a straight line.

[0011] As a further description of the above technical solution:

[0012] A plurality of sealing partition grooves arranged in parallel are arranged on the outer peripheral surface of the inner valve core.

[0013] As a further description of the above technical solution:

[0014] The glue inlet is arranged on the bottom surface of a sealed partition groove.

[0015] As a further description of the above technical solution:

[0016] A mounting plane is arranged on one side of the outer valve body, and a mounting hole is arranged on the other side of the outer valve body opposite to the mounting plane, and a bottom of the mounting hole extends to the mounting plane.

[0017] As a further description of the above technical solution:

[0018] The mounting holes are countersunk.

[0019] As a further description of the above technical solution:

[0020] The outer valve body is provided with two mounting holes, which are symmetrically arranged on both sides of the inner valve core.

[0021] As a further description of the above technical solution:

[0022] A plurality of parallel annular grooves are arranged on the inner wall of the cavity.

[0023] As a further description of the above technical solution:

[0024] The head of the outer valve body is in a cone-shaped structure.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. In the present invention, the dispensing valve is suitable for dispensing with viscous glue. The dispensing valve adopts a two-way valve core pneumatic control. After the dispensing is completed, the inner valve core retreats and switches to the suction position, thereby blocking the glue outlet to prevent glue overflow. In addition, the residual glue on the needle can also be sucked out from the suction port to avoid dripping and leaking glue under the influence of gravity, thereby realizing accurate control of the single dispensing amount.

[0027] 2. In the present invention, the glue inlet is arranged on the bottom surface of a sealing partition groove. When the inner valve core rotates and the glue inlet is no longer aligned with the glue inlet hole or the sucking hole, the sealing partition groove 23 forms a transition space connected to the glue inlet 211 to ensure smooth glue dispensing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of the dispensing of a suction dispensing valve for cosmetic containers Figure 1 .

[0030] Figure 2 A schematic diagram of the dispensing of a suction dispensing valve for cosmetic containers Figure 2.

[0031] Figure 3 A schematic diagram of the suction of a suction dispensing valve for cosmetic containers Figure 1 .

[0032] Figure 4 A schematic diagram of the back suction of a back suction dispensing valve for cosmetic containers Figure 2 .

[0033] Figure 5 The present invention is a schematic diagram of the structure of an inner valve core in a back-suction type dispensing valve for a cosmetic container.

[0034] Legend:

[0035] 1. Outer valve body; 11. Cavity; 111. First air inlet hole; 112. Second air inlet hole; 113. Ring groove; 12. Glue inlet hole; 13. Back suction hole; 14. Mounting plane; 15. Mounting hole; 16. Head;

[0036] 2. Inner valve core; 21. Glue outlet channel; 211. Glue inlet; 212. Glue outlet; 22. Piston part; 23. Sealing partition groove. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Example 1

[0043] See also Figure 1-5 The present invention provides a technical solution: a back-suction type dispensing valve for a cosmetic container, comprising:

[0044] Outer valve body 1;

[0045] An inner valve core 2, which is arranged in the outer valve body 1;

[0046] A glue outlet channel 21 is provided inside the inner valve core 2, one end of the glue outlet channel 21 extends to the side wall of the inner valve core 2 to form a glue inlet 211, and the other end of the glue outlet channel 21 extends to the end surface of the inner valve core 2 to form a glue outlet 212;

[0047] A piston portion 22 is disposed at one end of the inner valve core 2, a cavity 11 for receiving the piston portion 22 is disposed on the outer valve body 1, a first air inlet hole 111 is disposed on the side wall of the cavity 11, and a second air inlet hole 112 is formed by opening the top of the cavity 11;

[0048] The outer valve body 1 is provided with a glue inlet hole 12 and a sucking hole 13 which are arranged in sequence along a straight line.

[0049] The dispensing valve is suitable for dispensing viscous glue. The dispensing valve adopts dual-way valve core pneumatic control. After dispensing is completed, the inner valve core 2 retreats and switches to the re-suction position, thereby blocking the glue outlet to prevent glue overflow. In addition, the residual glue on the needle can also be sucked out from the re-suction port to avoid dripping and leaking under the influence of gravity, so as to achieve precise control of the single dispensing amount.

[0050] A mounting plane 14 is provided on one side of the outer valve body 1 , and a mounting hole 15 is provided on the other side of the outer valve body 1 opposite to the mounting plane 14 . The bottom of the mounting hole 15 extends to the mounting plane 14 , so as to facilitate the installation of the cylindrical outer valve body 1 .

[0051] The head 16 of the outer valve body 1 is in a conical structure, which further avoids glue residue during dispensing.

[0052] Working principle: When the dispensing valve is working, air is first introduced into the cavity 11 from the second air inlet 112, so that the piston 22 and the inner valve core 2 are pushed forward, and the glue outlet 212 at the end of the inner valve core 2 extends out of the outer valve body 1. At this time, the glue inlet 211 of the glue outlet channel 21 is aligned with the glue inlet hole 12, and the glue is dispensed from the glue inlet hole 12 through the glue inlet 211, the glue outlet channel 21, and the glue outlet 212;

[0053] After glue dispensing is completed, air is introduced into the cavity 11 from the first air inlet 111, so that the piston part 22 and the inner valve core 2 retreat to the re-suction position. On the one hand, the glue outlet 212 at the end of the inner valve core 2 retracts into the outer valve body 1, and on the other hand, the glue inlet 211 of the glue outlet channel 21 is aligned with the re-suction hole 13. The glue is re-sucked under the action of atmospheric pressure to avoid glue overflow and glue dripping under the influence of gravity.

[0054] Example 2

[0055] This embodiment further makes the following improved technical solutions on the basis of the above embodiments: a plurality of parallel sealing partition grooves 23 are provided on the outer peripheral surface of the inner valve core 2, and the sealing partition grooves 23 are annular structures to prevent glue from leaking from the assembly gap between the outer valve body 1 and the inner valve core 2.

[0056] Example 3

[0057] The present embodiment further makes the following improved technical scheme on the basis of the above embodiment: the glue inlet 211 is arranged on the bottom surface of a sealing partition groove 23, and when the inner valve core 2 rotates and the glue inlet 211 is no longer aligned with the glue inlet hole 12 or the sucking hole 13, the sealing partition groove 23 forms a transition space connected to the glue inlet 211 to ensure smooth glue dispensing.

[0058] Example 4

[0059] This embodiment further provides the following improved technical solution based on the above embodiment: the mounting hole 15 is a countersunk hole, so as to hide the mounting bolts of the outer valve body 1 .

[0060] In addition, two mounting holes 15 are provided on the outer valve body 1 , and the two mounting holes 15 are symmetrically arranged on both sides of the inner valve core 2 , so as to improve the mounting firmness of the outer valve body 1 .

[0061] Example 5

[0062] This embodiment further provides the following improved technical solution based on the above embodiment: a plurality of parallel annular grooves 113 are provided on the inner wall of the cavity 11 .

[0063] The annular groove 113 is provided at the top opening of the cavity 11 , and a sealing rubber ring may be arranged in the annular groove 113 , so that the sealing performance is improved when the outer valve body 1 is connected to the gas source, and leakage is avoided when air is ventilated from the second air inlet 112 .

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A back-suction dispensing valve for a cosmetic container, characterized in that: include: Outer valve body; An inner valve core, which is arranged in the outer valve body; Wherein, a glue outlet channel is arranged inside the inner valve core, one end of the glue outlet channel extends to the side wall of the inner valve core to form a glue inlet, and the other end of the glue outlet channel extends to the end surface of the inner valve core to form a glue outlet; A piston portion is provided at one end of the inner valve core, a cavity for receiving the piston portion is provided on the outer valve body, a first air inlet hole is provided on the side wall of the cavity, and a second air inlet hole is formed by an opening at the top of the cavity; The outer valve body is provided with glue inlet holes and back-suction holes which are arranged in sequence along a straight line.

2. A back-suction dispensing valve for a cosmetic container according to claim 1, characterized in that: A plurality of sealing partition grooves arranged in parallel are arranged on the outer peripheral surface of the inner valve core.

3. A back-suction dispensing valve for a cosmetic container according to claim 2, characterized in that: The glue inlet is arranged on the bottom surface of the sealing partition groove.

4. The back-suction dispensing valve for a cosmetic container according to claim 1, characterized in that: A mounting plane is arranged on one side of the outer valve body, a mounting hole is arranged on the other side of the outer valve body opposite to the mounting plane, and a bottom of the mounting hole extends to the mounting plane.

5. A back-suction dispensing valve for a cosmetic container according to claim 4, characterized in that: The mounting hole is a countersunk hole.

6. The back-suction type dispensing valve for a cosmetic container according to claim 4, characterized in that: The outer valve body is provided with two mounting holes, which are symmetrically arranged on both sides of the inner valve core.

7. The back-suction dispensing valve for a cosmetic container according to claim 1, characterized in that: The inner wall of the cavity is provided with a plurality of parallel annular grooves.

8. The back-suction type dispensing valve for a cosmetic container according to claim 1, characterized in that: The head of the outer valve body is in a cone-shaped structure.

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