Pipe end structure and packaging tube

Abstract

The utility model belongs to the technical field of packing tube, disclose a pipe head structure and packing tube, the pipe head structure includes the cover body, transition section, pipe nozzle section that connect in proper order, among them, the outer wall extension of transition section is provided with recess, be provided with the cavity in the pipe nozzle section, the one end of cavity is close to transition section and is provided with the liquid outlet hole for making material to flow, and the cavity is provided with the flow guide portion that surrounds the inner wall of cavity in the side close to liquid outlet hole, the material of being located at the liquid outlet hole can flow back and drop in the cavity through the flow guide portion, the stress of the groove bottom of recess set through transition section can break and then separate the cover body and pipe nozzle section, so that personnel can be more convenient through single hand can carry out the separation of cover body and pipe nozzle section, and the flow guide portion makes the material of being located at the liquid outlet hole can flow back and drop in the cavity through the flow guide portion, guarantee that material will not jam the liquid outlet hole.

Description

Technical Field

[0001] This utility model relates to the field of packaging tube technology, and in particular to a tube head structure and packaging tube. Background Technology

[0002] Traditional packaging tube structures typically feature screw caps or flip-top caps. Such designs often require two hands to open the tube, which can be difficult and inconvenient for certain situations or individuals who can only open it with one hand. Furthermore, some existing tube head structures that can be broken off with one hand often suffer from slow backflow of residual material and blockage of the tube head when breaking off to pour out highly viscous colloidal materials. Utility Model Content

[0003] The purpose of this utility model is to provide a pipe head structure that allows personnel to break the pipe with one hand to discharge materials while avoiding residual materials from clogging the outlet hole and preventing backflow.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The tube head structure includes a cover, a transition section, and a nozzle section connected in sequence; wherein, the outer wall of the transition section extends with a groove; the nozzle section has a cavity, and one end of the cavity near the transition section has an outlet hole for material to flow out, and the cavity has a guide section protruding on the side near the outlet hole and surrounding the inner wall of the cavity, so that the material at the outlet hole can flow back through the guide section and drip into the cavity.

[0006] As an optional solution to the tube head structure provided by this utility model, the end of the guide portion away from the liquid outlet is provided with a first sharp corner portion, the tip of the first sharp corner portion extends toward the end of the cavity away from the transition section, and the tip of the first sharp corner portion has a first gap with the inner wall of the cavity.

[0007] As an optional solution to the pipe head structure provided by this utility model, the cover body is provided with a connecting hole that passes through the transition section and communicates with the liquid outlet.

[0008] As an optional solution for the tube head structure provided by this utility model, the depth of the annular groove is 0.05-0.1mm, and the width of the annular groove in the direction from the transition section to the nozzle section is 0.2-0.3mm.

[0009] As an optional solution to the pipe head structure provided by this utility model, a flow-blocking part is provided around the inner wall of the connecting hole. The flow-blocking part is used to prevent material located at the connecting hole from dripping into the transition section.

[0010] As an optional solution for the pipe head structure provided by this utility model, the end of the flow-blocking part away from the transition section is provided with a second sharp corner, and the tip of the second sharp corner has a second gap with the wall of the connecting hole; the end of the flow-blocking part near the transition section is provided with a third sharp corner, and the tip of the third sharp corner contacts the wall of the connecting hole.

[0011] As an optional solution for the tube head structure provided by this utility model, the cavity includes a first cavity and a second cavity that are interconnected. The first cavity has a liquid outlet at one end near the transition section. The longitudinal section of the first cavity is set as a trapezoidal structure. The cross-sectional area of ​​the first cavity gradually increases from the transition section to the nozzle section. The longitudinal section of the second cavity is square, and the cross-sectional area of ​​the second cavity is not less than the maximum cross-sectional area of ​​the first cavity. The flow guide protrudes from the inner wall of the first cavity.

[0012] As an optional solution for the pipe head structure provided by this utility model, the groove is a V-shaped groove with an included angle greater than or equal to 30° and less than or equal to 45°, and the thickness of the transition section at the bottom of the groove is 15-25% of the wall thickness of the nozzle section.

[0013] As an optional solution to the pipe head structure provided by this utility model, the outer wall of the groove is coated with an antibacterial coating.

[0014] Secondly, this utility model also provides a packaging tube, including a tube body and a tube head structure, wherein one end of the tube body is open and connected to the nozzle section.

[0015] The beneficial effects of this utility model are:

[0016] The pipe head structure provided by this utility model includes a cap, a transition section, and a nozzle section connected in sequence. The outer wall of the transition section extends with a groove. The nozzle section has a cavity, and one end of the cavity near the transition section has an outlet hole for material to flow out. The cavity has a guide portion protruding on the side near the outlet hole and surrounding the inner wall of the cavity. Material at the outlet hole can flow back through the guide portion and drip into the cavity. The bottom of the groove in the transition section can break under force, thereby separating the cap and the nozzle section. This allows personnel to easily separate the cap and the nozzle section with one hand. At the same time, the guide portion allows some highly viscous colloidal materials at the outlet hole to flow back quickly through the guide portion and drip into the cavity, ensuring that the material does not block the outlet hole. Attached Figure Description

[0017] Figure 1 This is a front view of the pipe head structure and packaging tube provided in a specific embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the pipe head structure and packaging tube provided in a specific embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of the pipe head structure and packaging tube provided in a specific embodiment of this utility model;

[0020] Figure 4 yes Figure 3 Enlarged diagram of point A in the diagram.

[0021] In the picture:

[0022] 1. Cap; 2. Transition section; 3. Nozzle section;

[0023] 11. Communicating hole; 12. Grip part; 21. Groove; 31. Cavity;

[0024] 111. Flow-blocking section; 311. Liquid outlet; 312. Flow-guiding section; 313. First chamber; 314. Second chamber;

[0025] 1111, Second sharp corner; 1112, Third sharp corner; 3121, First sharp corner;

[0026] 100. Tube body; 101. Tube shoulder structure. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 4 As shown, this utility model embodiment provides a pipe head structure, including a cover body 1, a transition section 2, and a nozzle section 3 connected in sequence; wherein, the outer wall of the transition section 2 extends and is provided with a groove 21; a cavity 31 is provided inside the nozzle section 3, and a liquid outlet hole 311 for material to flow out is provided at one end of the cavity 31 near the transition section 2, and a guide portion 312 protruding on the side of the cavity 31 near the liquid outlet hole 311 and surrounding the inner wall of the cavity 31 is provided, so that the material located at the liquid outlet hole 311 can flow back through the guide portion 312 and drip into the cavity 31.

[0032] It is understandable that the cover 1, transition section 2, and nozzle section 3 are connected sequentially. The outer wall of the transition section 2 extends with a groove 21, meaning that the bottom of the groove 21 can break under force, allowing personnel to easily separate the cover 1 from the nozzle section 3. This greatly improves the ease of breaking the cover 1 from the nozzle section 3, and the groove 21 allows for one-handed operation. Furthermore, the nozzle section 3 has a cavity 31, with an outlet hole 311 near the transition section 2 for material to flow out. When the groove 21 is broken, the cover 1 separates from the nozzle section 3, and the material inside the cavity 31 can be discharged through the outlet hole 311, ensuring normal material discharge. Furthermore, the cavity 31 has a guide portion 312 protruding on the side near the liquid outlet 311 and surrounding the inner wall of the cavity 31. This allows the residual material at the liquid outlet 311 to effectively and quickly flow back through the guide portion 312 and drip into the cavity 31 after the material flows out. This avoids the situation where residual ointments, colloids, or even some sticky materials with high viscosity block the liquid outlet 311 and prevent backflow.

[0033] In other words, in this embodiment, the cap 1 acts as an end cap, the transition section 2 acts as the connection structure and actual breakage structure between the cap 1 and the nozzle section 3, and the nozzle section 3 is essentially the main body of the nozzle structure. The groove 21 of the transition section 2 makes it easier for personnel to break the pipe, such as for people with disabilities, children, or women. The guide section 312 prevents material from remaining in the outlet hole 311 after it flows out. It should also be noted that the specific connection method of the cap 1, transition section 2, and nozzle section 3 can be bonding, one-piece injection molding, etc., and is not limited in detail here.

[0034] In this embodiment, as Figure 1 and Figure 4 As shown, the liquid outlet 311 has a strip-shaped hole structure.

[0035] Understandably, because the tube head structure is used for storing and discharging common liquid materials, it also needs to be applied to some ointments, colloids, and even some sticky materials with high viscosity. Therefore, the discharging hole 311 is a strip-shaped hole structure, which ensures that the material can still be discharged normally without clogging the discharging hole 311. Correspondingly, the transition section 2 and the groove 21 are also consistent in shape with the strip-shaped hole structure of the discharging hole 311. It can also be understood that the groove 21 of the transition section 2 is centrally symmetrically distributed around the discharging hole 311. As for the specific type of strip-shaped hole structure, it can be square, elliptical, etc., and is not limited in detail here. In addition, it should be noted that the cover 1 has a symmetrical structure, which allows it to maintain its shape when subjected to multiple forces, and also allows for more freedom in choosing the direction of the force applied when breaking.

[0036] In this embodiment, as Figure 3 and Figure 4 As shown, the guide portion 312 is provided with a first pointed corner portion 3121 at one end away from the liquid outlet hole 311. The tip of the first pointed corner portion 3121 extends toward the end of the cavity 31 away from the transition section 2, and the tip of the first pointed corner portion 3121 has a first gap with the inner wall of the cavity 31.

[0037] It is understandable that the end of the guide section 312 facing away from the liquid outlet 311 is provided with a first pointed corner 3121. The tip of the first pointed corner 3121 extends toward the end of the cavity 31 away from the transition section 2, and the tip of the first pointed corner 3121 has a first gap with the inner wall of the cavity 31. This allows the material remaining near the liquid outlet 311 to be guided through the end of the guide section 312 near the liquid outlet 311 to the end of the guide section 312 facing away from the liquid outlet 311. At the same time, because the tip of the first pointed corner 3121 is toward the end of the cavity 31 away from the transition section 2... The material at the outlet 311 will not flow along the inner wall of the cavity 31 into the cavity 31, but will flow directly along the guide portion 312 and eventually flow to the tip of the first corner portion 3121 which has a first gap with the inner wall of the cavity 31, and then drip into the cavity 31. This arrangement ensures that the material near the outlet 311 flows back to the cavity 31 in a dripping manner, further avoiding the situation where residual material blocks the outlet 311 and cannot flow back.

[0038] In this embodiment, as Figure 3 and Figure 4 As shown, the cover 1 has a connecting hole 11 that passes through the transition section 2 and communicates with the liquid outlet hole 311.

[0039] It is understandable that the cover body 1 also has an opening structure, namely the connecting hole 11. The connecting hole 11 passes through the transition section 2 and connects with the liquid outlet hole 311. This means that a portion of the material in the cavity 31 is actually located in the connecting hole 11. That is, a portion of the material exists in the cover body 1 through the connecting hole 11. This causes the material in the cavity 31 to interfere with the material in the cover body 1 when the personnel actually break it. As a result, when breaking the groove 21, the tension of the material can be more effectively broken, making it easier to discharge the material after breaking the groove 21 of the transition section 2.

[0040] It is important to note that when the actual material is a highly viscous ointment, colloid, or other viscous material, the surface tension of the material will be stronger. Existing technologies typically only seal the outlet hole 311 with an end cap, which prevents the material from flowing out normally when opened. In fact, during transportation and handling, the material may completely block the outlet, further increasing the surface tension. Even if the end cap is opened directly, the material cannot be quickly poured out, which further increases the probability that the material cannot flow out normally. In this embodiment, a connecting hole 11 is provided inside the cap 1, which passes through the transition section 2 and connects to the outlet hole 311. This makes it easier to break the surface tension of the material, thereby improving the material discharge effect and ensuring the operational stability of the tube head structure. It should also be noted that the shape of the connecting hole 11 is also consistent with that of the outlet hole 311.

[0041] In this embodiment, as Figures 3 to 4 As shown, a flow-blocking part 111 is provided around the inner wall of the connecting hole 11. The flow-blocking part 111 is used to prevent the material located at the connecting hole 11 from dripping into the transition section 2.

[0042] It is understandable that, due to the design of the connecting hole 11, a portion of the material in the cavity 31 will actually be located in the connecting hole 11. More specifically, a portion of the material will exist in the cover 1 through the connecting hole 11. This means that when the transition section 2 of the tube head structure is broken off, there will also be material at the connecting hole 11 of the cover 1. This material is merely residual material inside the cover 1, not the material actually poured out for use. At this time, the flow-blocking part 111 surrounding the inner wall of the connecting hole 11 can ensure that the material located at the connecting hole 11 will not drip into the transition section 2, nor will it drip into the actual working area of ​​the material (such as the target application area of ​​the material), and it will not stick to the personnel's hands. This further ensures the effectiveness of the tube head structure and the accuracy of material discharge.

[0043] In this embodiment, as Figures 3 to 4 As shown, the flow-blocking part 111 is provided with a second sharp corner 1111 at one end away from the transition section 2, and the tip of the second sharp corner 1111 has a second gap with the wall of the connecting hole 11; the flow-blocking part 111 is provided with a third sharp corner 1112 at one end near the transition section 2, and the tip of the third sharp corner 1112 contacts the wall of the connecting hole 11.

[0044] It is understandable that the flow-blocking part 111 and the flow-guiding part 312 have opposite functions. The flow-guiding part 312 allows the material near the liquid outlet 311 to flow back to the cavity 31 in a dripping manner, while the flow-blocking part 111 is designed to prevent the material located at the connecting hole 11 from dripping into the transition section 2. Specifically, the end of the flow-blocking part 111 facing away from the transition section 2 is provided with a second sharp corner 1111, and the tip of the second sharp corner 1111 has a second gap with the hole wall of the connecting hole 11. The end of the flow-blocking part 111 near the transition section 2 is provided with a third sharp corner. The tip of the third pointed portion 1112 contacts the wall of the connecting hole 11, causing the material at the connecting hole 11 to be blocked by the tip of the second pointed portion 1111, thus preventing dripping. Alternatively, the second pointed portion 1111 is arranged around the flow-blocking portion 111 surrounding the inner wall of the connecting hole 11, with the end facing away from the transition section 2 forming a accommodating groove structure, further blocking the material at the connecting hole 11. The third pointed portion 1112 ensures that the area containing it does not significantly affect the normal storage of material near the connecting hole 11. This can be understood as the material near the connecting hole 11 being directly used or applied when broken. The contact between the tip of the third pointed portion 1112 and the wall of the connecting hole 11 ensures that the material near the connecting hole 11 is directly used along with the material in the cavity 31, preventing material waste.

[0045] In this embodiment, as Figure 4 As shown, the cavity 31 includes a first cavity 313 and a second cavity 314 that are interconnected. The first cavity 313 is provided with a liquid outlet 311 at one end near the transition section 2. The longitudinal section of the first cavity 313 is a trapezoidal structure. The cross-sectional area of ​​the first cavity 313 gradually increases from the transition section 2 to the nozzle section 3. The longitudinal section of the second cavity 314 is square, and the cross-sectional area of ​​the second cavity 314 is not less than the maximum cross-sectional area of ​​the first cavity 313. The guide part 312 protrudes from the inner wall of the first cavity 313.

[0046] It is understandable that the cavity 31 is divided into two sections: a first cavity 313 and a second cavity 314. The first cavity 313 and the second cavity 314 are interconnected. The first cavity 313 is located near the liquid outlet 311, and its longitudinal section is trapezoidal. From the transition section 2 to the nozzle section 3, the cross-sectional area of ​​the first cavity 313 gradually increases. Meanwhile, the longitudinal section of the second cavity 314 is square, and its cross-sectional area is not less than the maximum cross-sectional area of ​​the first cavity 313. Thus, the first cavity 313 and the second cavity 314 of the cavity 31 together form a trapezoidal and a square shape. With the combined structure, and the guide portion 312 protruding from the inner wall of the first cavity 313, the guide portion 312 is essentially protruding from the inner wall of the trapezoidal structure of the first cavity 313. This makes the guide portion 312 inclined, so that the residual material at the liquid outlet 311 can be accurately returned through the inclined guide portion 312 and drip directly into the second cavity 314, instead of dripping onto the inner wall of the second cavity 314. That is, this embodiment further ensures the accurate guiding and rapid dripping effect of the guide portion 312, thereby avoiding the situation where residual material blocks the liquid outlet 311 and cannot return.

[0047] In this embodiment, an annular groove is formed on the inner wall of the connecting hole 11 at the position of the transition section 2; the depth of the annular groove is 0.05-0.1mm, and the width of the annular groove in the direction from the transition section 2 to the nozzle section 3 is 0.2-0.3mm.

[0048] Understandably, at the location of transition section 2, an annular groove is formed on the inner wall of the connecting hole 11. The annular groove further reduces the force required to break the groove 21, allowing for normal breaking operations even for individuals with disabilities, children, or women. Furthermore, the depth of the annular groove is 0.05-0.1 mm, and the width of the annular groove in the direction from transition section 2 to nozzle section 3 is 0.2-0.3 mm. That is, in this embodiment, the annular groove is a micron-level groove structure, which maximizes the structural strength of the groove 21 while improving the ease of breaking operations.

[0049] In this embodiment, as Figures 1 to 4 As shown, groove 21 is a V-shaped groove with an included angle greater than or equal to 30° and less than or equal to 45°. The thickness of transition section 2 at the bottom of groove 21 is 15-25% of the wall thickness of nozzle section 3.

[0050] It is understood that the groove 21 has a V-shaped groove structure, wherein the included angle of the groove 21 is greater than or equal to 30° and less than or equal to 45°, and the bottom wall thickness of the groove 21 is 15-25% of the wall thickness of the nozzle section 3. This makes the force required for the actual breakage of the groove 21 more reasonable. When the bottom wall thickness of the groove 21 is larger or smaller than the wall thickness of the nozzle section 3, or when the included angle of the groove 21 is larger or smaller, the force required for the groove 21 to break will be larger or smaller. Therefore, this embodiment further reduces the force required to break the groove, and also avoids the occurrence of structural instability caused by the force required to break the groove being too small.

[0051] It should be noted that when the depth of the annular groove is 0.05-0.1mm, the width of the annular groove in the direction from transition section 2 to nozzle section 3 is 0.2-0.3mm, the included angle of groove 21 is greater than or equal to 30° and less than or equal to 45°, and the wall thickness of the bottom of groove 21 is 15-25% of the wall thickness of nozzle section 3, an audible "click" sound can be produced when groove 21 is broken. Even visually impaired people can confirm complete breakage through this sound. Therefore, as a preferred embodiment, the depth of the annular groove is 0.05-0.1mm, the width of the annular groove in the direction from transition section 2 to nozzle section 3 is 0.2-0.3mm, the included angle of groove 21 is greater than or equal to 30° and less than or equal to 45°, and the wall thickness of the bottom of groove 21 is 15-25% of the wall thickness of nozzle section 3, which further improves the performance of the nozzle structure.

[0052] In this embodiment, transition section 2 is a high-density polyethylene component.

[0053] It is understandable that the transition section 2 is made of high-density polyethylene with an HDPE (High Density Polyethylene) content of ≥90%, that is, the transition section 2 is made of high-density polyethylene, which increases the brittleness of the groove 21 of the transition section 2 when broken, making it easier for personnel to break it. In addition, it should be noted that the specific materials of the cover 1 and the nozzle section 3 can be the same as those of the transition section 2, or they can be other materials, which are not specified in detail here.

[0054] Furthermore, as a preferred embodiment, the material of transition section 2 is a blend modified material of high-flowability high-density polyethylene (HDPE) with a melt index (MI) ≥ 20 g / 10 min and linear low-density polyethylene (mLLDPE) synthesized with a metallocene catalyst, wherein the HDPE content is still maintained at ≥ 90%. The blend modified material of high-flowability HDPE and linear low-density polyethylene synthesized with a metallocene catalyst can ensure brittleness to the maximum extent while controlling the elongation at break of groove 21 to 5-8%. This is because when breaking, the material near groove 21 will be elongated due to fracture, which will lead to the generation of burrs and sharp corners. This embodiment can achieve a clean fracture that is "brittle but not shattered", minimizing burrs and sharp corners. This not only avoids material retention caused by burrs and sharp corners, but also avoids scratching workers. Additionally, it should be noted that when the depth of the annular groove is 0.05-0.1mm, the width of the annular groove in the direction from transition section 2 to nozzle section 3 is 0.2-0.3mm, and the included angle of groove 21 is greater than or equal to 30° and less than or equal to 45°, and the wall thickness of the bottom of groove 21 is 15-25% of the wall thickness of nozzle section 3, and the specific material method of transition section 2 is adopted as described above, the force required to break groove 21 can be stably maintained at 8-12N. This is more suitable for the pressing pressure of normal adults and even for the average pressing pressure of young users or adult women's thumbs, which further improves the use effect of the tube head structure and the actual user experience.

[0055] In this embodiment, as Figures 1 to 3 As shown, the cover 1 is also provided with a gripping part 12.

[0056] It is understandable that the cover 1 is also provided with a gripping part 12, which can further improve the convenience for personnel to grip the cover 1 to break the transition section 2. In this embodiment, preferably, the gripping part 12 is located at the end of the cover 1 away from the transition section 2, so that the structure actually being gripped (grip 12) and the structure actually being broken (groove 21) are on the same axis, ensuring the effect of force transmission and ensuring the convenience of breaking. At the same time, the gripping part 12 adopts a plate-like structure and is perpendicular to the plane of the cover 1. In addition, the outer contour of the gripping part 12 is consistent with the contour of the thumb. This setting can facilitate stable gripping by personnel. It should be noted that it can be as follows: Figures 1 to 2 The two symmetrical arc-shaped plate structures shown can also be other shapes, as long as they are adapted to the shape of the thumb. This embodiment does not impose any specific limitations on them. In addition, the specific material of the grip part 12 is all existing technology and is not limited in detail here. For example, it can be thermoplastic elastomer TPE / TPR, which can improve the comfort of the user's grip while also providing a certain degree of anti-slip effect.

[0057] In this embodiment, the outer surface of the grip portion 12 is also provided with an anti-slip structure.

[0058] Understandably, the grip portion 12, as the actual structure being gripped, also has an anti-slip structure on its outer surface. This effectively ensures the stability of the grip and prevents slippage. It should be noted that the anti-slip structure can be anti-slip protrusions or other anti-slip textures. The specific shape and pattern of the anti-slip structure are existing technologies and will not be detailed here. Preferably, the anti-slip structure is manufactured using a secondary injection molding process. Taking the grip portion 12 as an example made of thermoplastic elastomer TPE / TPR, the secondary injection molding of the anti-slip structure further improves manufacturing convenience and increases friction, maintaining a coefficient of friction ≥0.4 even with wet hands, thus addressing the pain point of using the product with wet hands in humid environments such as bathrooms.

[0059] In this embodiment, reinforcing ribs are provided on the outer surfaces of the cover 1 and the nozzle section 3 in the direction from the transition section 2 to the nozzle section 3.

[0060] It is understandable that, since it is necessary to break the groove 21 of the transition section 2 between the cover 1 and the nozzle section 3, reinforcing ribs are provided on the outer surfaces of the cover 1 and the nozzle section 3 in the direction from the transition section 2 to the nozzle section 3. This ensures that the cover 1 and the nozzle section 3 will not be damaged when the breaking force is applied, thus effectively guaranteeing the structural strength of the nozzle structure. As for the specific type, quantity, and forming method of the reinforcing ribs, these are all existing technologies and are not specified in detail in this embodiment.

[0061] In this embodiment, the outer wall of the groove 21 is coated with an antibacterial coating.

[0062] It is understandable that when the tube head structure is applied to special medical materials or other chemical materials, if the material is not used up when the groove 21 is broken for the first time, the tube head structure needs to be placed for the next use. At this time, the material will inevitably remain here, which will cause some dirt and even contaminate the material in the cavity 31 when left for a long time. Therefore, in this embodiment, the outer wall of the groove 21 is coated with an antibacterial coating to ensure the antibacterial effect of the groove 21 after the first use and extend the shelf life of the material. As for the specific type of antibacterial coating, they are all existing technologies, such as silver ion coating or other antibacterial coatings. Those skilled in the art can make adaptive adjustments according to the actual type of material and requirements. This embodiment does not limit it in detail.

[0063] This utility model also provides a packaging tube, such as Figures 1 to 3 As shown, the packaging tube includes a tube body 100 and a tube head structure, with one end of the tube body 100 open and connected to the nozzle section 3.

[0064] It is understood that both the tube body 100 and the cavity 31 connected to the tube body 100 are structures used for conveying or storing materials. One end of the tube body 100 is open and connected to the nozzle section 3, so that the cavity of the tube body 100 is connected to the cavity 31. When it is necessary to use, pour, or apply materials, the groove 21 of the transition section 2 of the tube head structure is broken off. It should be noted that the tube body 100 can be a bottle structure with only one open end for storing materials, or it can be a rigid or flexible conveying tube with an open end. In this case, the tube body 100 acts as a conveying tube, and the materials are conveyed through the tube body 100 and discharged through the tube head structure. These are all adaptive extensions of the prior art, and will not be described one by one here.

[0065] In this embodiment, as Figures 1 to 3 As shown, the tube body 100 also includes a shoulder structure 101, and one end opening of the tube body 100 is connected to the nozzle section 3 through the shoulder structure 101.

[0066] It is understood that the tube body 100 also includes a shoulder structure 101. One end opening of the tube body 100 is connected to the nozzle section 3 through the shoulder structure 101. That is, the shoulder structure 101 is set at one end opening of the tube body 100 and serves as a connection structure with the nozzle section 3, thereby enabling communication between the chamber of the tube body 100 and the cavity 31 of the nozzle section 3. The setting of the shoulder structure 101 makes the connection between the tube body 100 and the nozzle section 3 more stable, and at the same time, it can also improve the service life when facing long-term use, impact, friction and other situations. It should be noted that the shape and material of the shoulder structure 101 can be set according to actual use needs, which can improve the grip comfort of the user to a certain extent. These are all existing technologies and are not limited in detail here. Of course, in other embodiments, the shoulder structure 101 may not be set, and one end opening of the tube body 100 may be directly connected to the nozzle section 3. The specific connection method may be bonding, welding, integral connection, etc., which are not limited in detail here.

[0067] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pipe head structure, characterized in that, It includes a cover (1), a transition section (2), and a nozzle section (3) connected in sequence. The outer wall of the transition section (2) is provided with a groove (21). The nozzle section (3) is provided with a cavity (31). The cavity (31) is provided with an outlet hole (311) for material to flow out at one end near the transition section (2). The cavity (31) is provided with a guide part (312) protruding on the side near the outlet hole (311) and surrounding the inner wall of the cavity (31). The material located at the outlet hole (311) can flow back through the guide part (312) and drip into the cavity (31).

2. The pipe head structure according to claim 1, characterized in that, The guide portion (312) is provided with a first pointed corner portion (3121) at one end away from the liquid outlet (311). The tip of the first pointed corner portion (3121) extends toward the end of the cavity (31) away from the transition section (2), and the tip of the first pointed corner portion (3121) has a first gap with the inner wall of the cavity (31).

3. The pipe head structure according to claim 1, characterized in that, The cover (1) is provided with a connecting hole (11) that passes through the transition section (2) and communicates with the liquid outlet (311).

4. The pipe head structure according to claim 3, characterized in that, The inner wall of the connecting hole (11) has an annular groove at the position of the transition section (2); The depth of the annular groove is 0.05-0.1 mm, and the width of the annular groove in the direction from the transition section (2) to the nozzle section (3) is 0.2-0.3 mm.

5. The pipe head structure according to claim 3, characterized in that, The inner wall of the connecting hole (11) is surrounded by a flow-blocking part (111), which is used to prevent the material located at the connecting hole (11) from dripping into the transition section (2).

6. The pipe head structure according to claim 5, characterized in that, The flow-blocking part (111) is provided with a second sharp corner (1111) at one end away from the transition section (2), and the tip of the second sharp corner (1111) has a second gap with the hole wall of the connecting hole (11); The flow-blocking part (111) is provided with a third sharp corner (1112) at one end near the transition section (2), and the tip of the third sharp corner (1112) contacts the wall of the connecting hole (11).

7. The pipe head structure according to claim 1, characterized in that, The cavity (31) includes a first cavity (313) and a second cavity (314) that are interconnected. The first cavity (313) has a liquid outlet (311) at one end near the transition section (2). The longitudinal section of the first cavity (313) is a trapezoidal structure. The cross-sectional area of ​​the first cavity (313) gradually increases from the transition section (2) to the nozzle section (3). The longitudinal section of the second cavity (314) is square, and the cross-sectional area of ​​the second cavity (314) is not less than the maximum cross-sectional area of ​​the first cavity (313). The guide portion (312) protrudes from the inner wall of the first cavity (313).

8. The pipe head structure according to any one of claims 1-7, characterized in that, The groove (21) is a V-shaped groove, the included angle of the groove (21) is greater than or equal to 30° and less than or equal to 45°, and the thickness of the transition section (2) at the bottom of the groove (21) is 15-25% of the wall thickness of the nozzle section (3).

9. The pipe head structure according to any one of claims 1-7, characterized in that, The outer wall of the groove (21) is coated with an antibacterial coating.

10. A packaging tube, comprising a tube body (100) and a tube head structure as claimed in any one of claims 1-9, wherein one end of the tube body (100) is open and connected to the nozzle segment (3).

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