Dosing cap

Abstract

The present invention proposes a dosing cap, which relates to the field of cap technology and includes a cap body formed by surrounding a sealed raw material storage chamber and a sealing plug. A pressing part deforms an elastic part under the action of an external force and moves it downward, and a tower column synchronously pushes the sealing plug downward, thereby causing the sealing plug to detach from the connection with the bottom of the cap cylinder and opening the raw material storage chamber.

Description

Technology Field

[0001] The present invention relates to the field of cap technology, and in particular to dosing caps. Background Technology

[0002] Traditional packaged beverages, such as bottled tea, are all sold by mixing solutes with water. However, preservatives and stabilizers are added to extend the shelf life, which not only affects the taste but also poses a risk to human health. Consequently, dosing caps have emerged to effectively and stably preserve various nutrients by sealing the solute within the cap. When the beverage is ready to be consumed, the solute is released into the water, allowing for a longer shelf life and a fresh taste. Furthermore, by eliminating the need for artificial preservatives, this design better meets the demands of healthy beverages.

[0003] Conventional dosing caps typically utilize a structural design with a hardened layer; when consumed, this layer is punctured or opened to release solutes from the raw material storage chamber and mix them with the water inside the bottle. This design presents the following problems:

[0004] 1. The processing difficulty of the sealing film or thin layer is high, which limits the processing space for bonding the sealing film structure, and the injection molding process for the thin layer structure is difficult, resulting in low efficiency and a high defect rate, thus high processing costs;

[0005] 2. The structure of the sealing film or thinning layer itself is relatively weak, resulting in a lack of stability and sealing ability. One is that the sealing film or thinning layer is easily damaged during storage or transportation, affecting the quality of the encapsulated solute; the other is that even if the thinning layer is not damaged, it lacks the sealing ability to block oxygen and moisture. The problem to be solved

[0006] Taking this into consideration, the present invention proposes a dosing cap to solve the technical problem in the prior art where the processing of the thin layer structure of the dosing cap is difficult and the sealing effect is poor. means of solving the problem

[0007] The technical solution of the present invention is implemented as follows.

[0008] Example 1: The present invention provides a dosing cap, wherein the dosing cap comprises a cap body and a sealing plug, and the cap body and the sealing plug surround a sealed raw material storage chamber;

[0009] The above-described cap body comprises a pressing part, an elastic part, a protective part, a tower column, and a cap cylinder formed integrally, wherein the edge of the pressing part extends outward to form the elastic part, and the edge of the elastic part extends in a direction away from the raw material storage chamber to form the protective part; the tower column is installed below the pressing part, and its lower end is engaged with the sealing plug, the top end of the cap cylinder is integrally connected to the edge of the elastic part, and the bottom end of the cap cylinder is in the shape of an opening and is slide-sealed with the sealing plug to form the raw material storage chamber;

[0010] The above pressing part deforms the elastic part and moves it downward under the action of an external force, and the tower column synchronously pushes the sealing plug downward, thereby causing the sealing plug to disengage from the connection with the bottom of the cap cylinder and opening the raw material storage chamber.

[0011] Example 2: The present invention provides a dosing cap, wherein the dosing cap comprises an upper cap, a lower cap, and a sealing plug, and the upper cap, lower cap, and sealing plug surround and form a sealed raw material storage chamber;

[0012] The upper cap comprises a integrally molded pressing part, a face flexible part, an annular protective part, a tower column, an upper cap cylinder, and an annular upper locking connection part, wherein the annular protective part protrudes upward to form a protective area surrounding the pressing part and the face flexible part, and the height of the annular protective part is higher than the height of the pressing part; the sealing plug is disassembled and sealably connected to the bottom of the lower cap to seal the raw material storage chamber; the tower column is integrally installed below the pressing part of the upper cap, and its lower end is fixedly connected to the sealing plug; and by manually acting downward on the pressing part, the face flexible part is deformed and moves downward, and the tower column synchronously pushes the sealing plug downward, thereby causing the sealing plug to escape the blockage of the lower cap cylinder and open the raw material storage chamber.

[0013] Example 3: The present invention provides a dosing cap, wherein the dosing cap comprises an upper cap, a lower cap, and a sealing plug, and the upper cap, the lower cap, and the sealing plug surround a sealed raw material storage chamber, and wherein;

[0014] The upper cap comprises a pressing portion, an elastic portion, a protective portion, an upper cap cylinder, and a top column formed integrally, wherein the edge of the pressing portion extends outward to form the elastic portion, and the edge of the elastic portion extends protruding in a direction away from the raw material storage chamber to form the protective portion, and the height of the protective portion is greater than the height of the pressing portion; the top column is installed below the pressing portion, and its lower end is engaged with the sealing plug, and the inner edge of the protective portion extends in the direction of the raw material storage chamber to form the upper cap cylinder;

[0015] The lower cap includes a lower cap cylinder and a lower cap body, wherein the lower cap cylinder is integrally fitted onto the lower cap body, and the bottom portion of the lower cap cylinder is engaged with the sealing plug; the inner wall of the lower cap body is connected to the outer wall of the upper cap cylinder, and the top surface of the lower cap body is press-connected to the bottom surface of the protective portion, and the connected area is sealed through ultrasonic welding;

[0016] The above pressing part deforms the elastic part and moves it downward under the action of an external force, and the tower column synchronously pushes the sealing plug downward, thereby causing the sealing plug to detach from the connection with the bottom of the lower cap cylinder and opening the raw material storage chamber. Brief explanation of the drawing

[0017] FIG. 1 is a perspective view of a dosing cap according to Example 1; FIG. 2 is a first visual explosion diagram of a dosing cap according to Example 1; FIG. 3 is a second visual explosion diagram of a dosing cap according to Example 1; FIG. 4 is a cross-sectional view of a dosing cap according to Example 1; FIG. 5 is a perspective view of a dosing cap according to Example 2; FIG. 6 is a first visual explosion diagram of a dosing cap according to Example 2; FIG. 7 is a second visual explosion diagram of a dosing cap according to Example 2; FIG. 8 is a cross-sectional view of one embodiment of a dosing cap according to Example 2; FIG. 9 is a cross-sectional view of another embodiment of a dosing cap according to Example 2; FIG. 10 is a local enlarged view of location A in FIG. 8; FIG. 11 is a perspective view of a dosing cap according to Example 3; FIG. 12 is a first visual explosion diagram of a dosing cap according to Example 3; FIG. 13 is a second visual explosion diagram of a dosing cap according to Example 3; FIG. 14 is a cross-sectional view of a dosing cap according to Example 3; Figure 15 is a local enlarged view of place B in Figure 14. Specific details for implementing the invention

[0018] Example 1

[0019] Referring to the contents illustrated in FIGS. 1-4, the dosing cap of the present embodiment includes a cap body (1A) and a sealing plug (2A), and the cap body (1A) and the sealing plug (2A) surround and form a sealed raw material storage chamber (4A), and the raw material storage chamber (4A) stores a solute.

[0020] Here, the cap body (1A) comprises a pressing part (11A), an elastic part (12A), a protective part (13A), a tower column (14A), and a cap cylinder (15A) formed integrally, wherein the edge of the pressing part (11A) extends outward to form the elastic part (12A), and the edge of the elastic part (12A) extends in a direction away from the raw material storage chamber (4A) to form the protective part (13A), and the protective part (13A) forms an annular tube-shaped structure and the protective part (13A) accommodates the pressing part (11A) and the elastic part (12A); the upper end of the tower column (14A) is integrally connected vertically below the pressing part (11A), and the lower end is connected via a sealing plug (2A); The top portion of the cap cylinder (15A) is integrally connected to the edge of the elastic portion (12A), the axial direction of the cap cylinder (15A) is opposite to the extension direction of the protective portion (13A), the bottom portion of the cap cylinder (15A) is open, and the cap cylinder (15A) and the sealing plug (2A) are slide-sealed to form a raw material storage chamber (4A). Specifically, the sealing plug (2A), the pressing portion (11A), the elastic portion (12A), and the cap cylinder (15A) form a sealed raw material storage chamber (4A).

[0021] The pressing part (11A) deforms the elastic part (12A) under the action of an external force and moves it into the raw material storage chamber (4A), and the tower column (14A) synchronously pushes the sealing plug (2A) downward, thereby causing the sealing plug (2A) to detach from the connection with the inner wall of the bottom of the cap cylinder (15A) and opening the raw material storage chamber (4A).

[0022] In this embodiment, the elastic part (12A) is a flexible material, and under the action of an external force, the elastic part (12A) forms an arc-shaped protrusion structure by its own elasticity, and the arc-shaped protrusion surface faces upward, and when subjected to downward pressure by an external force, the elastic part (12A) can be sunk downward.

[0023] The dosing cap proposed in this embodiment is composed of two injection-molded parts, such as a cap body (1A) and a sealing plug (2A), so that one part can be saved, making the structure of the dosing cap simpler and thus reducing production costs, and since only the connection part between the sealing plug (2A) and the cap cylinder (15A) needs to be sealed, the difficulty of sealing can be reduced.

[0024] In addition, in the sealing plug structure used, the contact area between the plug ring of the sealing plug and the bottom of the inner wall of the cap cylinder is small, so the frictional force is small. Therefore, when using the product, the resistance to opening the raw material storage chamber by manually applying pressure to the upper cap is reduced, making it easier and smoother.

[0025] In this embodiment, the height of the protective part (13A) is higher than the height of the pressing part (11A). The protective part (13A), the pressing part (11A), and the elastic part (12A) can be injection molded in one go without the need to separately install a protective member to protect the pressing part (11A) during production. Since the height of the protective part (13A) is higher than the height of the pressing part (11A), it has the effect of preventing miscontact of external force on the pressing part (11A) when not in use, thereby simplifying the structure of the dosing cap and saving materials, thereby lowering the production cost of the dosing cap.

[0026] In this embodiment, the sealing plug (2A) includes a plug ring (21A), a plug surface (22A), a plug bottom (23A), and a locking connection hole (24A). The sealing plug (2A) generally has a structure similar to a cone, and the portion that is directly sealed and connected to the bottom of the inner wall of the cap cylinder (15A) is the plug ring (21A). The end facing the raw material storage chamber (4A) is the plug surface (22A), which is a cone shape having an arc-shaped slope. A locking connection hole (24A) is installed at the top end of the cone shape, and the top column (14A) of the cap body (1A) is inserted and connected to the locking connection hole (24A). The plug bottom (23A) is a lightweight structure in the shape of multiple interlocking rings of different sizes, and the bottoms of the rings are arranged in order. After the sealing plug (2A) and the cap cylinder (15A) are sealed and locked, the bottoms of both are placed in an orderly arrangement.

[0027] In this embodiment, an integrally molded annular convex sealing line (211A) is installed on the outer wall of the plug ring (21A), and the diameter of the annular convex sealing line (211A) is slightly larger than the inner diameter of the cap cylinder (15A), and a press fit is made between the sealing plug (2A) and the cap cylinder (15A) by the elasticity of the injection molded member, thereby achieving a better sealing effect.

[0028] In this embodiment, an annular groove (241A) is installed on the inner wall of the catch connection hole (24A), and an annular projection (141A) that engages with the annular groove (241A) is installed on the outer wall of the lower part of the tower column (14A). By the annular projection (141A) engaging with the annular groove (241A), a more rigid and stable insertion connection is achieved, so that the sealing plug (2A) does not easily detach after the raw material storage chamber (4A) is opened. In some other embodiments, the structure in which the protrusions of the annular groove (241A) and the annular projection (141A) engage may proceed in the opposite direction, that is, an annular projection may be installed on the inner wall of the catch connection hole (24A) and an annular groove may be installed on the outer wall of the lower part of the tower column (14A).

[0029] In this embodiment, the cap body (1A) further includes a cap body (16A), the cap body (16A) is integrally installed on the outer surface of the cap cylinder (15A), a connecting groove is formed between the cap body (16A) and the cap cylinder (15A), and a female screw (161A) is installed on the inner wall of the cap body (16A) to be connected to a male screw of the bottle opening. The bottle opening is inserted into the connecting groove, and the cap and the bottle opening are connected by rotating the screw threads.

[0030] In the above embodiment, the sealing plug (2A) is slide-sealed to the cap cylinder (15A). Although the sealing plug (2A) and the cap cylinder (15A) are press-fitted to achieve a good sealing effect, this embodiment further installs a sealing film (3A) to enhance the sealing performance. The sealing film (3A) is welded to the surface where the sealing plug (2A) and the cap cylinder (15A) are aligned using an ultrasonic or hot-melt method to cover the gap between the structural members, thereby ensuring a gap-free and better sealing effect. Specifically, the sealing film (3A) is a composite material with high barrier properties.

[0031] The operating principle of the dosing cap of Example 1 is as follows: the integrally molded cap body (1A) is installed upside down so that the opening at the bottom of the cap cylinder (15A) faces upward, and an appropriate amount of solute is injected into the raw material storage chamber (4A) through this opening. Then, the plug surface (22A) of the sealing plug (2A) is assembled at the bottom of the cap cylinder (15A) so that it faces the raw material storage chamber (4A), thereby inserting the top column (14A) of the cap body (1A) into the locking connection hole (24A) of the sealing plug (2A) to securely lock and connect it. At the same time, the plug ring (21A) of the sealing plug (2A) is sealed and connected to the inner wall at the bottom of the cap cylinder (15A), thereby sealing the solute into the raw material storage chamber (4A).

[0032] To further enhance sealing performance, the sealing film (3A) is welded to the surface where the sealing plug (2A) and the cap cylinder (15A) are aligned using an ultrasonic or hot melt method to cover the gap between the structural members, thereby ensuring no gaps and achieving a better sealing effect.

[0033] After the dosing cap completes the solute filling and assembly sealing, the bottle is purified and water is injected, the dosing cap is assembled to the bottle using an automatic capping method, and the dosing cap and bottle can be tightly fastened and sealed using a female screw (161A) and a male screw so that they interlock, and the bottle using this dosing cap can complete the production processing and assembly.

[0034] When using, by pressing down on the pressing part (11A) of the cap body (1A) with a finger, the tower column (14A) moves the sealing plug (2A) downward, thereby causing the sealing plug (2A) to escape the seal blockage of the inner wall of the cap cylinder (15A). At the same time, the sealing film (3A) escapes from the bottom of the cap cylinder (15A) but remains attached to the plug bottom (23A) of the sealing plug (2A) so that it does not fall into the bottle. When the raw material storage chamber (4A) is opened, the solute pre-filled in the raw material storage chamber (4A) falls into the bottle under the action of gravity through the gap between the sealing plug (2A) and the bottom of the cap cylinder (15A), and is mixed and dissolved with the water inside the bottle. It can be drunk by shaking to mix uniformly or by stopping for a certain period of time to dissolve sufficiently.

[0035] In order to expand the capacity of the raw material storage chamber (4A) of the dosing cap by sufficiently utilizing the diameter of the cap body (1A) as the maximum diameter of the raw material storage chamber (4A), and to improve the water storage capacity of the bottle by preventing the cap cylinder (15A) from extending too far downward and reducing the occupation of the internal space of the bottle, the cap body (1A) is divided into two parts such as an upper cap and a lower cap, thereby obtaining the following Examples 2 and 3.

[0036] Example 2

[0037] Referring to FIGS. 5 to 10, the dosing cap of the present embodiment includes an upper cap (1B), a lower cap (2B), and a sealing plug (3B). The upper cap (1B), the lower cap (2B), and the sealing plug (3B) surround and form a sealed raw material storage chamber (5B).

[0038] Here, the upper cap (1B) comprises a integrally molded pressing part (11B), a face flexible part (12B), an annular protective part (13B), a tower column (14B), and an upper cap cylinder (15B), wherein the annular protective part (13B) protrudes upward to form a protective area surrounding the pressing part (11B) and the face flexible part (12B), and the pressing part (11B), the face flexible part (12B), and the annular protective part (13B) are integrally connected, and the height of the annular protective part (13B) is higher than the height of the pressing part (11B) to prevent miscontact of external force on the pressing part (11B) when not in use. The sealing plug (3B) is disassembled and sealed to the bottom of the lower cap (2B) to seal the raw material storage chamber (5B), the tower column (14B) is integrally installed below the pressing part (11B), the upper cap cylinder (15B) is integrally installed on the bottom surface of the protection part (13B), and the upper cap (1B) has a structure in which the top part is closed and the bottom of the upper cap cylinder (15B) is open.

[0039] The lower cap (2B) includes a lower cap body (21B) and a lower cap cylinder (22B), wherein the lower cap (2B) has a tubular structure with upper and lower openings, and the lower cap body (21B) is integrally installed over the outer side of the lower cap cylinder (22B). This embodiment illustrates a method of sealing and fixing the upper cap (1B) and the lower cap (2B). Specifically, the upper cap cylinder (15B) and the lower cap body (21B) are sealed and fixedly connected through a locking connection method.

[0040] Specifically, a double-ring shaped upper locking connection part (151B) is installed at the bottom of the upper cap cylinder (15B), and a locking connection gap is formed between the double rings of the upper locking connection part (151B). A double-ring shaped lower locking connection part (211B) is installed at the top of the lower cap body (21B), and a locking connection gap is formed between the double rings of the lower locking connection part (211B). The upper locking connection part (151B) and the lower locking connection part (211B) are locking connection structures that match each other, and their double-ring structures are alternately inserted into each other's locking connection gaps. An annular projection (T1) and an annular groove (C1) are installed correspondingly on the upper locking connection part (151B) and the lower locking connection part (211B) to engage with the locking connection, thereby achieving a more sealed and more robust locking connection effect.

[0041] In this embodiment, the sealing plug (3B) is slide-sealed to the bottom of the lower cap cylinder (22B) to seal the raw material storage chamber (5B); the top of the tower column (14B) is integrally connected vertically to the bottom of the pressing part (11B) of the upper cap (1B), and the bottom of the tower column is hook-connected to the sealing plug (3B).

[0042] The sealing plug (3B) of the present embodiment includes a plug ring (31B), a plug surface (32B), a plug bottom (33B), and a locking connection hole (34B). The connection relationship of each component part of the sealing plug (3B) of the present embodiment matches the connection relationship of each component part in the sealing plug (2A) related to Example 1, and the connection relationship between the sealing plug (3B) and the lower cap cylinder (22B) matches the connection relationship between the sealing plug (2A) and the cap cylinder (15A), so it is not described further here. Correspondingly, an annular groove (341B) is installed on the inner wall of the locking connection hole (34B), and an annular projection (141B) that interlocks with the annular groove (341B) is installed on the outer wall of the tower column (14B) to achieve a more robust and stable insertion connection effect, thereby preventing the sealing plug (3B) from easily falling off after the raw material storage chamber (5B) is opened. In some other embodiments, the structure in which the annular groove (341B) and the annular projection (141B) interlock may proceed in the opposite direction, that is, an annular projection may be installed on the inner wall of the catch connection hole (34B) and an annular groove may be installed on the outer wall of the lower part of the tower column (14B).

[0043] In addition, to improve the sealing performance between the sealing plug (3B) and the lower cap cylinder (22B), this embodiment further installs an annular convex sealing line (311B) integrally molded on the outer wall of the plug ring (31B). The diameter of the annular convex sealing line (311B) is slightly larger than the inner diameter of the lower cap cylinder (22B), and a press fit is made between the sealing plug (3B) and the lower cap cylinder (22B) due to the elasticity of the injection molded member, thereby achieving a better sealing effect.

[0044] In this embodiment, the lower cap body (21B) is integrally installed on the outer side of the lower cap cylinder (22B), and a connecting groove is formed between the lower cap body (21B) and the lower cap cylinder (22B) so that the bottle opening is inserted into the connecting groove and simultaneously fixedly connected to the cap body. At the same time, a female screw (212B) is installed on the inner wall of the lower cap body (21B) to facilitate the insertion of the bottle opening into the connecting groove, and the male screw of the bottle opening is screw-coupled with the female screw (212B) of the lower cap body (21B).

[0045] It is necessary to explain in particular that, based on Example 2, as one embodiment, with reference to the content illustrated in FIG. 9, the lower cap cylinder (22B) is a straight type, its inner diameter does not change along its axial direction, and the bottom inner wall of the lower cap cylinder (22B) is sealedly connected to the sealing plug (3B). The straight-type design allows the material discharge opening formed after the sealing plug (3B) is opened to be larger, so that it can be applied to solute granules or sticky liquids with a large filling amount and low fluidity, such as meal replacement powder, milk tea topping, honey, etc.

[0046] In another embodiment, as shown in FIG. 10, the lower cap cylinder (22B) may be further installed in a funnel shape, the cross-sectional inner diameter thereof gradually decreases, and the bottom inner wall of the lower cap cylinder (22B) is sealedly connected to the sealing plug (3B). The funnel-shaped design makes the material discharge opening formed after the sealing plug (3B) is opened more aesthetically pleasing and allows it to be applied to powdered solute granules or concentrates with a small filling amount and good fluidity, such as freeze-dried tea powder, freeze-dried coffee powder, tea concentrate, coffee concentrate, etc.

[0047] In Example 2, to further enhance sealing performance, the sealing film (4B) is welded to the lower surface where the sealing plug (3B) and the lower cap cylinder (22B) are aligned using an ultrasonic or heat fusion process to cover the gap between the structural members, thereby ensuring no gaps and achieving a better sealing effect.

[0048] The operating principle of the dosing cap of Example 2 is as follows: First, the upper cap (1B) and the lower cap (2B) are assembled together, and the two are connected by being caught and sealed through the respective upper catch connection (151B) and lower catch connection (211B). Next, an appropriate amount of solute is injected into the raw material storage chamber (5B). Then, the sealing plug (3B) and the lower inner wall of the lower cap cylinder (22B) are sealed to seal the solute in the raw material storage chamber (5B), thereby completing the assembly of the dosing cap. The operating method of the dosing cap of Example 2 for mounting on the bottle and opening the raw material storage chamber (5B) is the same as the operating method of Example 1, so it is not described further here.

[0049] In Example 2, the upper cap and the lower cap are fixedly connected by a double locking connection method, so while a certain degree of sealing requirement can be achieved, a complete sealing requirement cannot be reached. For example, if mechanical vibration occurs between the upper cap and the lower cap, there is a problem in that the seal at the connection point may leak. Regarding the above problems, although ultrasonic welding can achieve a good seal, since the connection point between the upper cap and the lower cap in Example 2 is located in the middle of the entire cap, if the connection point between the upper cap and the lower cap is sealed using ultrasonic welding, the distance between the welding point and the welding head is long, making close-range welding difficult, resulting in low welding efficiency and quality. Consequently, the sealing performance of the entire dosing cap is not stable. Therefore, the present invention proposes a new method for connecting the upper cap and the lower cap.

[0050] Example 3

[0051] Referring to FIGS. 11 to 15, the dosing cap of the present embodiment includes an upper cap (1C), a lower cap (2C), and a sealing plug (3C). The upper cap (1C), the lower cap (2C), and the sealing plug (3C) form a sealed raw material storage chamber (5C).

[0052] Here, the upper cap (1C) includes a pressing part (11C), an elastic part (12C), a protective part (13C), a tower column (14C), and an upper cap cylinder (15C) formed integrally, wherein the protective part (13C) protrudes upward and forms a protective area to accommodate the pressing part (11C) and the elastic part (12C), and the pressing part (11C) is fixed to the protective part (13C) through the elastic part (12C) and is integrally connected, and the height of the protective part (13C) is higher than the height of the pressing part (11C) to prevent miscontact of external force on the pressing part (11C) when not in use. The tower column (14C) is integrally installed below the pressing part (11C), and the upper cap cylinder (15C) is fixedly installed on the bottom surface of the protection part (13C). The upper cap (1C) has a structure in which the top part is closed and the bottom of the upper cap cylinder (15C) is open.

[0053] The lower cap (2C) includes a lower cap body (21C) and a lower cap cylinder (22C), wherein the lower cap (2C) has a tubular structure with upper and lower openings, and the lower cap body (21C) is integrally installed on the outside of the lower cap cylinder (22C), and in this embodiment, the upper cap (1C) and the lower cap (2C) are fixedly connected so as to be sealed, so that the upper cap (1C), the lower cap (2C), and the sealing plug (3C) surround and form the raw material storage chamber (5C).

[0054] In this embodiment, the method of implementing the upper cap (1C) and the lower cap (2C) is an ultrasonic welding method. Specifically, in this embodiment, the volume of the raw material storage chamber (5C) can be increased by extending the upper end of the lower cap body (21C) upward to form a cylindrical structure. The inner wall of the lower cap body (21C) is connected to the outer wall of the upper cap cylinder (15C), and the upper surface of the lower cap body (21C) and the bottom surface of the protective part (13C) are connected through an ultrasonic welding method.

[0055] By using the above technical solution, radial positioning between the upper cap (1C) and the lower cap (2C) can be achieved by inserting the upper cap cylinder (15C) into the lower cap body (21C) so that the outer wall of the upper cap cylinder (15C) and the inner wall of the lower cap body (21C) come into contact. Additionally, by applying ultrasonic welding to the top surface of the protective part (13C) so that the welding position is located at the top of the entire cap, the angle of inclination of the welding head is reduced, and at the same time, the distance between the ultrasonic welding head and the welding position is reduced, thereby enabling close-field welding and improving welding efficiency and quality, which can improve the overall sealing performance of the dosing cap.

[0056] In some preferred embodiments, a fuse wire (131C) is installed at the area where the bottom surface of the protective part (13C) and the lower cap body (21C) come into contact, and the cross-section of the fuse wire (131C) is triangular, and the fuse wire (131C) is used for welding when performing ultrasonic welding to achieve a better welding effect. When performing ultrasonic welding, the action of the fuse wire (131C) is to collect vibration energy at the end of the triangle and then allow the accumulated heat to form a uniform plastic melt across the entire welding interface, which increases the strength of the weld, reduces virtual welding, overflow and amplitude, improves the perfection of the welded part, and can even shorten the processing time.

[0057] The sealing plug (3C) in this embodiment includes a plug ring (31C), a plug surface (32C), a plug bottom (33C), and a locking connection hole (34C). The connection relationship of each component part of the sealing plug (3C) in this embodiment matches the connection relationship of each component part in the sealing plug (3B) related to Example 2. Correspondingly, the connection relationship between the sealing plug (3C) and the lower cap cylinder (22C) matches the connection relationship between the sealing plug (3B) and the lower cap cylinder (22B) in Example 2, so it is not described further here. Correspondingly, an annular projection (341C) is installed on the inner wall of the catch connection hole (34C), and an annular groove (141C) that interlocks with the annular projection (341C) is installed on the outer wall of the tower column (14C) to achieve a more robust and stable insertion connection effect, thereby preventing the sealing plug (3C) from easily falling off after the raw material storage chamber (5C) is opened. In some other embodiments, the structure in which the protrusions and protrusions of the annular projection (341C) and the annular groove (141C) interlock may proceed in the opposite direction, that is, an annular groove may be installed on the inner wall of the catch connection hole (34C) and an annular projection may be installed on the outer wall of the lower part of the tower column (14C).

[0058] In addition, to improve the sealing performance between the sealing plug (3C) and the lower cap cylinder (22C), this embodiment further installs an annular convex sealing line (311C) integrally molded on the outer wall of the plug ring (31C). The diameter of the annular convex sealing line (311C) is slightly larger than the inner diameter of the lower cap cylinder (22C), and a press fit is made between the sealing plug (3C) and the lower cap cylinder (22C) due to the elasticity of the injection molded member, thereby achieving a better sealing effect.

[0059] In this embodiment, the sealing plug (3C) and the lower cap cylinder (22C) are aligned, and the sealing film (4C) is welded to the surface by an ultrasonic or thermal fusion process to cover the gap between the structural members, thereby ensuring a gap-free and better sealing effect. Specifically, the sealing film (4C) is a composite material having high barrier properties.

[0060] In this embodiment, the lower cap body (21C) is integrally installed on the outer side of the lower cap cylinder (22C), and a bottle opening connecting groove is formed between the lower cap body (21C) and the lower cap cylinder (22C) so that the bottle opening is inserted into the bottle opening connecting groove and simultaneously fixedly connected to the cap body. At the same time, a female screw (212C) is installed on the inner wall of the lower cap body (21C) to facilitate the insertion of the bottle opening into the bottle opening connecting groove, and the male screw of the bottle opening is screw-coupled with the female screw (212C) of the lower cap body (21C).

[0061] It should be explained that in this embodiment, the lower cap cylinder (22C) can be installed in a straight or funnel shape, and its operation is the same as that of the lower cap cylinder (22B) in Example 2.

[0062] In Example 3, the upper cap (1C) and the lower cap (2C) are sealed and connected by welding, and the sealing plug (3C) is sealed and mounted on the lower cap (2C) in the same manner as in Example 2. The assembly of the dosing cap and the bottle and the opening method of the raw material storage chamber (5C) in Example 3 are also the same as in Example 2, so they are not described further here.

Claims

Claim 1 A dosing cap comprising a cap body and a sealing plug that surrounds a sealed raw material storage chamber, wherein the cap body comprises an integrally molded pressing portion, an elastic portion, a protective portion, a tower column, and a cap cylinder, wherein the edge of the pressing portion extends outward to form the elastic portion, and the edge of the elastic portion extends protruding in a direction away from the raw material storage chamber to form the protective portion, wherein the height of the protective portion is higher than the height of the pressing portion to prevent miscontact of external force on the pressing portion when not in use, wherein the tower column is installed below the pressing portion, and its lower end is engaged with the sealing plug, wherein the upper end of the cap cylinder is integrally connected to the edge of the elastic portion, and the lower end of the cap cylinder is in the shape of an opening and is slide-sealed with the sealing plug to form the raw material storage chamber, and the dosing cap further comprises a sealing film, wherein the sealing film is welded to the lower surface where the sealing plug and the cap cylinder are placed in alignment using an ultrasonic or hot-melt method, so that the sealing film fills the gap between the structural members between the sealing plug and the cap cylinder. A dosing cap characterized by covering, wherein the pressing part deforms the elastic part and moves downward under the action of an external force, and the tower column synchronously pushes the sealing plug downward, thereby causing the sealing plug to detach from the connection with the bottom of the cap cylinder, wherein the sealing film detaches from the bottom of the cap cylinder but remains adhered to the plug bottom of the sealing plug so as not to fall into the bottle, and the raw material storage chamber is opened through the gap formed between the sealing plug and the bottom of the cap cylinder. Claim 2 A dosing cap according to claim 1, wherein the cap body further comprises a cap body, wherein the cap body is installed on the outer surface of the cap cylinder, a bottle opening connecting groove is formed between the cap body and the cap cylinder, and a female screw is installed on the inner wall of the cap body to be connected to a male screw of the bottle opening. Claim 3 In paragraph 2, the sealing plug comprises an integrally molded plug ring, a plug surface, a plug bottom, and a locking connection hole, wherein the plug ring is installed on the outer edge of the plug surface and the plug ring is sealedly connected to the inner wall of the bottom of the cap cylinder, the plug surface faces the raw material storage chamber and a locking connection hole is installed on the plug surface, the bottom of the top column is inserted and connected to the locking connection hole and an annular groove is installed on the inner wall of the locking connection hole and an annular projection is installed on the outer wall of the bottom of the top column to be locked and connected to the annular groove and an integrally molded annular convex sealing line is installed on the outer wall of the plug ring and the diameter of the annular convex sealing line is larger than the inner diameter of the cap cylinder. Claim 4 delete Claim 5 A dosing cap comprising an upper cap, a lower cap, and a sealing plug that surrounds and forms a sealed raw material storage chamber, wherein the upper cap comprises an integrally molded pressing portion, a face flexible portion, an annular protective portion, a tower column, an upper cap cylinder, and an annular upper catch connecting portion, wherein the annular protective portion protrudes upward to surround and form a protective area for accommodating the pressing portion and the face flexible portion, and the height of the annular protective portion is higher than the height of the pressing portion, and the lower cap comprises a lower cap body, a lower cap cylinder, and an annular lower catch connecting portion, wherein the upper cap has a structure in which the top portion is closed and the bottom of the upper cap cylinder is open, and the lower cap has a tubular structure that is open at the top and bottom, and the lower cap body is integrally installed over the outer side of the lower cap cylinder, and the upper cap and the lower cap each have an annular upper catch connecting portion and It is formed by being engaged through an annular lower engaging connection to surround the raw material storage chamber, and a double-ring shaped upper engaging connection is installed at the bottom of the upper cap cylinder, and an engaging connection gap is formed between the double rings of the upper engaging connection, and a double-ring shaped lower engaging connection is installed at the top end of the lower cap body, and an engaging connection gap is formed between the double rings of the lower engaging connection, and the upper engaging connection and the lower engaging connection are alternately inserted into each other's engaging connection gaps, and an annular projection and an annular groove are installed correspondingly on the upper engaging connection and the lower engaging connection, and the annular projection and the annular groove are matched to each other to form a sealing structure, and the sealing plug is detachably sealed to the bottom of the lower cap to seal the raw material storage chamber, and the tower column is integrally installed below the pressing part of the upper cap, and its lower end is fixedly connected to the sealing plug, and the When a downward external force is applied to the pressing part, the above-mentioned flexible face part is deformed and moves downward, andA dosing cap characterized by the above-described tower column synchronously pushing the sealing plug downward, thereby causing the sealing plug to escape the blockage of the lower cap cylinder and open the raw material storage chamber. Claim 6 delete Claim 7 In claim 5, the lower cap cylinder is a tubular structure with upper and lower openings, the lower cap body is integrally installed over the outer side of the lower cap cylinder, a bottle opening connection groove is formed between the lower cap body and the lower cap cylinder, a female screw is installed on the inner wall of the lower cap body to be connected to a male screw of the bottle opening, the sealing plug includes a plug ring, a plug surface, a plug bottom, and a locking connection hole, wherein the portion directly sealed and connected to the bottom end of the inner wall of the lower cap cylinder is the plug ring, and one end facing the raw material storage chamber is the plug surface, the plug surface is a conical shape having an arc-shaped slope, a locking connection hole is installed at the top end of the conical shape, the top column of the upper cap is inserted and connected to the locking connection hole, and an annular projection and an annular groove are installed correspondingly on the inner wall of the locking connection hole and the outer wall of the top column. Claim 8 A dosing cap comprising an upper cap, a lower cap, and a sealing plug that surround and form a sealed raw material storage chamber, wherein the upper cap comprises an integrally molded pressing portion, an elastic portion, a protective portion, an upper cap cylinder, and a tower column, wherein the edge of the pressing portion extends outward to form the elastic portion, and the edge of the elastic portion extends and protrudes in a direction away from the raw material storage chamber to form the protective portion, the height of the protective portion is higher than the height of the pressing portion, and the tower column is installed below the pressing portion, and its lower end is engaged and connected with the sealing plug, and the inner edge of the protective portion extends in the direction of the raw material storage chamber to form the upper cap cylinder, and the lower cap comprises a lower cap cylinder and a lower cap body, wherein the lower cap cylinder is integrally fitted onto the lower cap body, the bottom of the lower cap cylinder is engaged and connected with the sealing plug, and the inner wall of the lower cap body is connected to the outer wall of the upper cap cylinder, and A dosing cap characterized in that the top surface of the lower cap body is compressed and connected to the bottom surface of the protective part, and the connected portion is sealed through ultrasonic welding, a welding guide line functioning as a fuse wire is installed at the area where the bottom surface of the protective part and the lower cap body come into contact, the longitudinal section of the welding guide line is triangular, the pressing part deforms the elastic part and moves downward under the action of an external force, and the top column synchronously pushes the sealing plug downward, thereby causing the sealing plug to detach from the connection with the bottom of the lower cap cylinder and opening the raw material storage chamber. Claim 9 In claim 8, a bottle opening connection groove is formed between the lower cap body and the lower cap cylinder, and a female screw is installed on the inner wall of the lower cap body to be connected to a male screw of the bottle opening; the sealing plug comprises an integrally molded plug ring, a plug surface, a plug bottom, and a locking connection hole, wherein the plug ring is installed on the outer edge of the plug surface and the plug ring is seal-connected to the inner wall of the bottom of the lower cap cylinder, the plug surface faces the raw material storage chamber and a locking connection hole is installed on the plug surface, the bottom of the top column is inserted and connected to the locking connection hole and an annular groove is installed on the inner wall of the locking connection hole, an annular projection is installed on the outer wall of the bottom of the top column to be lock-connected to the annular groove, and an integrally molded annular convex sealing line is installed on the outer wall of the plug ring, and the diameter of the annular convex sealing line is larger than the inner diameter of the lower cap cylinder. Claim 10 In claim 8, the dosing cap further comprises a sealing film, wherein the sealing film is welded by an ultrasonic or hot melt method to the lower surface where the sealing plug and the lower cap cylinder are aligned, and the sealing film covers the gap between the structural members between the sealing plug and the lower cap cylinder.

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