Container cover body and forming die

Abstract

The utility model provides a container cover body and a forming die. The container cover body comprises a glass part and a plastic part; a groove is formed in the glass part, the plastic part and the glass part are subjected to injection molding through the groove, the groove is located in the position, deviating from the center line, of the glass part, and a groove is formed in the plastic part in a surrounding mode. According to the container cover body and the forming mold, glass is adopted as a core part of the cover body, and compared with traditional pure plastic and stainless steel materials, the glass is high in chemical stability, not prone to reacting with drinks, capable of ensuring the original taste of the drinks, free of the risk of releasing harmful substances, recognized to be the most healthy, free of glue fixing in the whole process and capable of being used for manufacturing the container cover body. Integrated forming is achieved through precise mold pressing, glue pollution is eradicated, the assembly process is simplified, the overall structural strength of the cover is enhanced, gaps are reduced, dirt is not prone to being hidden, the sanitary level is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of food container components, and in particular to a container lid and a molding die. Background Technology

[0002] As an essential item in daily life, water cups are usually paired with lids for easy carrying. The two are connected by a conventional threaded connection to achieve a seal.

[0003] Currently, the mainstream water bottle lids on the market typically come in the following forms: pure plastic inner lids, inner lids combining plastic and stainless steel, inner lids combining plastic and other metals, and inner lids that are plastic and glass fixed together with pure glue. Pure plastic materials have problems such as the potential release of harmful substances at high temperatures and easy aging and wear. Although stainless steel is durable, long-term use with poor water quality may lead to the release of heavy metals, and in some cases, it may also affect the taste of the beverage. At the same time, the existing inner lids are glued together, which lacks structural stability and may even pose a risk of glue contamination.

[0004] Therefore, it is necessary to provide a container lid and a molding die to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a container lid and a molding die, which solves the problem that existing lids are mostly glued together, resulting in insufficient structural stability and even the risk of glue release and pollution.

[0006] To solve the above-mentioned technical problems, the container lid provided by this utility model includes: a glass part and a plastic part;

[0007] The glass part has a groove, and the plastic part is injection molded to the glass part through the groove. The groove is located off-center from the center line of the glass part, and the plastic part has a groove around it.

[0008] The glass part is made of high borosilicate or sodium calcium.

[0009] The plastic part is made of PP, Tritan, PC, PE or PPSU (one of these materials combined with a round borosilicate glass sheet or a round soda-lime glass sheet to make the container lid).

[0010] A molding die for processing the container lid includes a first mold base and a second mold base. A glass molding module is mounted on the first mold base, and a plastic molding module is mounted on the second mold base. The glass molding module includes a first mold head, and a mounting seat is provided inside the first mold head. A first mold cavity is formed inside the mounting seat for placing the glass portion. The plastic molding module includes a second mold head, which cooperates with the first mold head to achieve a seal. A second mold cavity is formed inside the second mold head.

[0011] Preferably, the mounting base is surrounded by protrusions.

[0012] Preferably, it further includes a mounting shell, the mounting shell having a cavity inside, a sliding sleeve mounted on the mounting base, the sliding sleeve being slidably connected to the cavity, a first sealing element being installed inside the first mold cavity, a connecting rod being fixedly connected inside the cavity, one end of the connecting rod penetrating the sliding sleeve and extending into the interior of the sliding sleeve, a piston being fixedly connected to one end of the connecting rod, a second sealing element being installed on the outer surface of the piston, and a stroke adaptation component being provided between the mounting shell and the first mold head, the stroke adaptation component being used to allow the first mold head to have a stroke toward the mounting shell.

[0013] Preferably, the travel motion component includes a slide groove, which is formed on the mounting shell. A sliding block is slidably connected in the slide groove. An elastic element is installed between one side of the sliding block and the side wall of the slide groove, and the other side of the sliding block is connected to the first mold head.

[0014] Compared with related technologies, the container lid and molding die provided by this utility model have the following beneficial effects:

[0015] This utility model provides a container lid and a molding mold. The lid uses glass as the core component. Whether it is soda-lime glass or high borosilicate glass, compared with traditional pure plastic and stainless steel materials, it has high chemical stability, is not easy to react with beverages, ensures the original flavor of the beverage, and has no risk of releasing harmful substances. It is fixed with zero glue throughout the process, and is formed in one piece by precise mold pressing, eliminating glue pollution, simplifying the assembly process, enhancing the overall structural strength of the lid, reducing gaps, making it less likely to accumulate dirt and grime, improving hygiene, and extending service life. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the container lid provided by this utility model;

[0017] Figure 2 This is a side sectional view of the container lid provided by this utility model;

[0018] Figure 3 for Figure 1 The diagram shows the structure of the glass section;

[0019] Figure 4 for Figure 1 The diagram shows a side view of the glass section.

[0020] Figure 5 A schematic diagram of a structure with steps for the glass section;

[0021] Figure 6 A schematic diagram of the structure of the first embodiment of the molding die provided by this utility model;

[0022] Figure 7 for Figure 6 The diagram shows the structure of the first mold base;

[0023] Figure 8 for Figure 6 The diagram shows the structure of the second mold base;

[0024] Figure 9 A schematic diagram of the second embodiment of the molding die provided by this utility model.

[0025] The diagram is labeled as follows: 1. Glass part, 2. Plastic part, 3. Groove, 4. Recess, 5. First mold base, 6. Second mold base, 7. Glass molding module, 71. First mold head, 72. Mounting base, 73. First mold cavity, 8. Plastic molding module, 81. Second mold head, 82. Second mold cavity, 9. Protrusion, 10. Step, 11. Mounting shell, 12. Shell cavity, 13. Sliding sleeve, 14. First seal, 15. Connecting rod, 16. Piston, 17. Second seal, 18. Stroke adaptation component, 181. Slide groove, 182. Sliding block, 183. Elastic element. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] First Embodiment

[0028] Please refer to the following: Figure 1-8 ,in, Figure 1 A schematic diagram of a preferred embodiment of the container lid provided by this utility model; Figure 2 This is a side sectional view of the container lid provided by this utility model; Figure 3 for Figure 1 The diagram shows the structure of the glass section; Figure 4 for Figure 1 The diagram shows a side view of the glass section. Figure 5 A schematic diagram of a structure with steps for the glass section; Figure 6A schematic diagram of the structure of the first embodiment of the molding die provided by this utility model; Figure 7 for Figure 6 The diagram shows the structure of the first mold base; Figure 8 for Figure 6 The diagram shows the structure of the second mold base. The container lid includes: a glass part 1 and a plastic part 2;

[0029] The glass part 1 has a groove 3, and the plastic part 2 is injection molded with the glass part 1 through the groove 3 to form a waterproof effect. The groove 3 is located off the center line of the glass part 1, and the plastic part 2 has a groove 4 around it.

[0030] In this embodiment, a groove 3 is provided on the glass part 1. The groove 3 can ensure the sealing between the glass part 1 and the plastic part 2, and can also better fix the two together, providing more attachment points.

[0031] By providing grooves 3, it is possible to prevent loosening between the two when molding with the plastic part 2, avoid falling off, and increase the firmness.

[0032] The groove 3 is located off the center line of the glass part 1, specifically between the center line of the glass part 1 and one-third of the way to one side. By setting the groove 3 in this position, a space can be reserved after injection molding with the plastic part 2 to better install the sealing gasket.

[0033] The protrusion 9 in the mold can form a groove 4 during plastic injection. The groove 4 can cooperate with the mold to fix it and prevent slippage.

[0034] The groove 4 is designed to work with a sealing gasket. By setting a corresponding protrusion on the sealing gasket, when the protrusion enters the groove 4, it positions the sealing gasket and prevents it from rotating when the cup lid is rotated.

[0035] like Figure 4 As shown, in another embodiment, a step 10 may be provided on the glass part 1 to replace the groove 3 for connection with the plastic part 2, which can also ensure the sealing of the molding.

[0036] The glass part 1 is made of high borosilicate or sodium calcium.

[0037] The plastic part 2 is made of PP (polypropylene), Tritan (copolyester), PC (polycarbonate), PE (polyethylene) or PPSU (polyphenylene sulfone).

[0038] Preferably, in this embodiment, Tritan material is combined with a circular borosilicate glass sheet or a circular soda-lime glass sheet, and the plastic water cup lid is pressed out by a mold. The environmentally friendly and non-toxic nature of Tritan material complements the properties of glass.

[0039] In another embodiment, a water cup lid is formed by combining food-grade PP material with a circular borosilicate glass sheet or a circular soda-lime glass sheet and die-casting it in one piece using a professional mold, thus combining the easy formability of PP with the excellent physical and chemical properties of glass.

[0040] In another embodiment, a glass core water cup inner lid is made of food-grade PC material and a circular soda-lime glass sheet or a circular borosilicate glass sheet. The high strength of PC and the stability of glass ensure the sealing and durability of the lid, making it suitable for various types of water cups.

[0041] In another embodiment, the inner lid of the glass cup is made of food-grade PPSU material combined with a circular soda-lime glass sheet or a circular borosilicate glass sheet. This provides excellent high-temperature resistance, capable of withstanding temperatures up to 180°C. This allows the cup lid to withstand high-temperature environments such as high-temperature sterilization and boiling water infusions without deforming, breaking, or releasing harmful substances due to high temperatures, maintaining good physical properties and chemical stability over a long period.

[0042] In another embodiment, the water cup lid is made of food-grade PE material and a circular soda-lime glass sheet or a circular borosilicate glass sheet. It has excellent flexibility and elasticity, and can deform to a certain extent without breaking, ensuring the overall strength of the lid and improving its service life.

[0043] A molding die for processing the container lid includes a first mold base 5 and a second mold base 6. A glass molding module 7 is mounted on the first mold base 5, and a plastic molding module 8 is mounted on the second mold base 6. The glass molding module 7 includes a first mold head 71, and a mounting base 72 is provided inside the first mold head 71. A first mold cavity 73 is opened inside the mounting base 72 for placing the glass part 1. The plastic molding module 8 includes a second mold head 81, which cooperates with the first mold head 71 to achieve sealing. A second mold cavity 82 is opened inside the second mold head 81.

[0044] In this embodiment, the second mold base 6 is designed with a flow channel system based on the characteristics of the selected food-grade plastic material (such as PP, Tritan, etc.) to ensure that the plastic can fill the second mold cavity 82 evenly and smoothly during the injection molding process, so as to obtain a good molding effect. The surface of the second mold cavity 82 is finely polished to ensure the smoothness of the outer surface of the cup lid.

[0045] In this embodiment, to address the issue caused by the different coefficients of thermal expansion and contraction between glass and plastic, the mold incorporates an intelligent adaptive adjustment system. This system uses sensors to monitor temperature changes in various parts of the mold in real time, feeding this information back to the control system. This allows for dynamic adjustment of the mold's opening and closing degree, as well as the flow rate and velocity of the cooling water channels. This ensures that both the plastic and glass are in a suitable temperature environment throughout the entire molding cycle, maintaining a stable dimensional fit.

[0046] The water cup lids produced using this mold have a unique one-piece molding structure, with food-grade plastic and food-grade glass tightly bonded together without the use of any glue or other adhesives, eliminating the risk of chemical contamination from the source and ensuring consumer safety.

[0047] Mold material selection: High-strength, wear-resistant, and heat-conducting mold steel materials that meet food contact safety standards, such as high-quality steel, are selected for manufacturing the main structure of the mold to ensure the durability and stability of the mold.

[0048] Mold processing technology: Precision CNC machining technology is used to process each part of the mold with high precision to ensure that the dimensional accuracy is within ±0.01mm; on the key cavity surfaces, special processes such as electrical discharge machining, grinding and polishing are used to make the surface roughness Ra below 0.1μm to meet the appearance quality requirements of the water cup lid product.

[0049] The mounting base 72 is surrounded by protrusions 9, and there are two glass molding modules 7 and two plastic molding modules 8.

[0050] The protrusions 9 are used for forming the grooves 4 in the cover body. Their number corresponds to the grooves 4. There are two glass forming modules 7 and two plastic forming modules 8, which can produce two products at the same time, improving work efficiency. The number can also be four, and can be adjusted according to actual needs.

[0051] The working principle of the container lid and molding die provided by this utility model is as follows:

[0052] The glass part 1 is placed inside the first mold cavity 73, and then the mold is closed by the relative movement of the first mold base 5 and the second mold base 6. The first mold head 71 and the second mold head 71 are precisely matched and connected. Then, the plastic material is injected into the second mold cavity 82 through the runner and die-cast into the plastic part 2, which is integrally formed with the glass part 1 to form a water cup lid product.

[0053] Compared with related technologies, the container lid and molding die provided by this utility model have the following beneficial effects:

[0054] The lid uses glass as its core component. Whether it's soda-lime glass or high borosilicate glass, compared to traditional pure plastic or stainless steel, it has high chemical stability, is less likely to react with beverages, ensures the original flavor of the beverage, and has no risk of releasing harmful substances. It is recognized as the healthiest material. It is fixed with zero glue throughout the process, relying on precise mold pressing to achieve one-piece molding, eliminating glue pollution, simplifying the assembly process, enhancing the overall structural strength of the lid, reducing gaps, making it less likely to trap dirt and grime, improving hygiene, and extending service life.

[0055] Second Embodiment

[0056] Please refer to the following: Figure 9 Based on the molding die provided in the first embodiment of this application, the second embodiment of this application proposes another molding die. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0057] Specifically, the molding die provided in the second embodiment of this application differs in that it further includes a mounting shell 11, the mounting shell 11 having a cavity 12 inside, a sliding sleeve 13 mounted on the mounting base 72, the sliding sleeve 13 being slidably connected to the cavity 12, a first sealing element 14 being installed inside the first mold cavity 73, a connecting rod 15 being fixedly connected inside the cavity 12, one end of the connecting rod 15 penetrating the sliding sleeve 13 and extending into the interior of the sliding sleeve 13, a piston 16 being fixedly connected to one end of the connecting rod 15, a second sealing element 17 being installed on the outer surface of the piston 16, and a stroke adaptation component 18 being provided between the mounting shell 11 and the first mold head 71, the stroke adaptation component 18 being used to satisfy the first mold head 71 having a stroke toward the mounting shell 11.

[0058] In this embodiment, the first mold base 5 is divided into a stationary part and a moving part, the first mold head 71 is mounted on the moving part, and the mounting shell 11 is mounted on the stationary part.

[0059] The stroke motion component 18 includes a slide groove 181, which is formed on the mounting shell 11. A sliding block 182 is slidably connected in the slide groove 181. An elastic element 183 is installed between one side of the sliding block 182 and the side wall of the slide groove 181. The other side of the sliding block 182 is connected to the first mold head 71.

[0060] The elastic element 183 includes, but is not limited to, springs, elastic sheets, etc., which only need to achieve the rebound effect.

[0061] Compared with related technologies, the container lid and molding die provided by this utility model have the following beneficial effects:

[0062] The glass part 1 is placed in the first mold cavity 73 and pressed against the first sealing member 14. As the first mold head 71 moves and cooperates with the second mold head 81, the first mold head 71 moves to the right, causing the sliding sleeve 13 to move to the right. This causes the piston 16 to slide inside the sliding sleeve 13, creating a negative pressure inside the sliding sleeve 13. This automatically fixes the glass part 1, improving the stability of use and ensuring that the glass part 1 will not fall off during movement. After injection molding is completed, the first mold head 71 returns to its original position. At this time, the first mold head 71 can be moved to the left, causing the piston 16 to push inside the sliding sleeve 13, increasing the internal pressure and pushing out the glass part 1, which facilitates material discharge.

[0063] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A container closure, characterised in that, Include: Glass part and plastic part; The glass part is provided with a groove, the plastic part is injection molded with the glass part through the groove, the groove is located at the off-center position of the glass part, and a groove is provided around the plastic part.

2. The container closure of claim 1 wherein, The material of the glass part is high borosilicate or sodium calcium.

3. The container closure of claim 1 wherein, The material of the plastic part is PP, Tritan, PC, PE or PPSU.

4. A forming die for processing a container closure as claimed in any one of claims 1 to 3, characterised in that, It includes a first mold base and a second mold base, the first mold base is provided with a glass forming module, the second mold base is provided with a plastic forming module, the glass forming module includes a first die head, the inside of the first die head is provided with a mounting seat, the inside of the mounting seat is provided with a first mold cavity, the first mold cavity is used to place the glass part, the plastic forming module includes a second die head, the second die head cooperates with the first die head and realizes sealing, and the inside of the second die head is provided with a second mold cavity.

5. The forming mold of claim 4, wherein, The mounting seat is provided with a protrusion around.

6. The forming mold of claim 4, wherein It also includes a mounting shell, the inside of the mounting shell is provided with a shell cavity, the mounting seat is provided with a sliding sleeve, the sliding sleeve is slidingly connected in the shell cavity, the inside of the first mold cavity is provided with a first sealing element, the inside of the shell cavity is fixedly connected with a connecting rod, one end of the connecting rod penetrates through the sliding sleeve and extends into the inside of the sliding sleeve, one end of the connecting rod is fixedly connected with a piston, the outer surface of the piston is provided with a second sealing element, the mounting shell and the first die head are provided with a stroke adapting assembly, the stroke adapting assembly is used to satisfy the first die head has a stroke towards the mounting shell.

7. The forming mold of claim 6, wherein The stroke adapting assembly includes a sliding groove, the sliding groove is provided on the mounting shell, a sliding block is slidingly connected in the sliding groove, an elastic element is mounted between one side of the sliding block and the side wall of the sliding groove, and the other side of the sliding block is connected to the first die head.

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