Foam plastic mold with high air permeability and good hydrophobicity

Abstract

The utility model discloses an efficient foam plastic mould with good air permeability and hydrophobicity, which belongs to the mould field and comprises a concave mould unit and a convex mould unit, the concave mould unit comprises a first outer mould, an inner concave mould is arranged on the first outer mould, a first through hole is formed in the first outer mould, an exhaust hole is formed in the bottom of the inner concave mould, and a second through hole is formed in the bottom of the convex mould. The male die unit comprises a second outer die, an inner male die matched with the inner female die is arranged on the second outer die, a drainage hole capable of accelerating drainage is formed in one side of the inner male die, and an acceleration section and an inclined section are sequentially arranged on a drainage section in the drainage direction. According to the EPS foam box mold with the good hydrophobicity, through the design of the inclined drainage holes, the gravity effect can be better utilized, water or other liquid can be rapidly discharged along the inclined hole channels, and therefore the drainage efficiency is remarkably improved, residues of the liquid in the hole channels can be reduced, blockage or corrosion caused by long-time accumulation is avoided, and the service life of the mold is prolonged. Therefore, the service life of the die is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a foam mold with high efficiency, good air permeability and hydrophobicity. Background Art

[0002] Hydrophobic EPS foam box molds are a key piece of equipment in EPS foam box production. These molds, crafted using foam molding technology, are used to shape EPS raw materials into specific foam boxes during the foam molding process. With the rapid development of industries like e-commerce, express delivery, and cold chain logistics, the demand for EPS foam boxes continues to increase, and the application of these hydrophobic EPS foam box molds is also gradually increasing.

[0003] When using a hydrophobic EPS foam box mold, condensed water will be generated inside the mold during the mold preheating or steam heating process. This condensed water needs to be discharged through the drainage holes. Since the drainage holes on the current hydrophobic EPS foam box mold are small in size, the water cannot be effectively discharged through the drainage holes, resulting in condensed water accumulation inside the mold, which not only increases the difficulty of cleaning the mold, but may also have an adverse effect on the subsequent foaming molding process. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the drainage holes on the existing mold are small in size, moisture cannot be effectively discharged through the drainage holes, resulting in accumulation of condensed water inside the mold, and to propose a foam mold with high efficiency, good air permeability and hydrophobicity.

[0005] In order to achieve the above purpose, the utility model adopts the following technologies:

[0006] A foam mold with high efficiency, good air permeability and hydrophobicity, comprising:

[0007] A concave mold unit, the concave mold unit comprising a first outer mold, an inner concave mold provided on the first outer mold, a first through hole provided on the first outer mold, and an exhaust hole provided at the bottom of the inner concave mold;

[0008] The punch unit includes a second outer mold, the second outer mold is provided with an inner punch that matches the inner concave mold, one side of the inner punch is provided with a drainage hole that can accelerate drainage, and a laser-formed vent hole, and the second outer mold is provided with a second through hole.

[0009] As a further description of the above technical solution: the drainage hole includes a discharge section, and an inclined section connected to the discharge section is provided in the discharge direction of the discharge section.

[0010] As a further description of the above technical solution: the drainage hole is formed by laser punching, and the length of the drainage hole is between 1-30 mm and the width is between 0.3-2 mm.

[0011] As a further description of the above technical solution: the first outer mold is provided with a reinforcement component for reinforcing and fixing the inner concave mold;

[0012] The reinforcement assembly includes a reinforcement rod passing through the first outer mold, the reinforcement rod is detachably connected to the first outer mold through a locking nut, and a buffer sleeve is sleeved on the reinforcement rod.

[0013] As a further description of the above technical solution: the inner die is detachably connected to the first outer die via connecting bolts.

[0014] As a further description of the above technical solution: a cavity is formed between the inner concave mold and the inner convex mold.

[0015] As a further description of the above technical solution: the exhaust hole is connected to the cavity, and the exhaust hole is formed by laser drilling.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. The inclined drainage hole design can better utilize gravity to allow water or other liquids to be quickly discharged along the inclined channel, thereby significantly improving drainage efficiency and reducing liquid residue in the channel, avoiding long-term accumulation leading to blockage or corrosion, thereby extending the service life of the mold;

[0018] 2. The reinforcement rod effectively improves the overall stability of the mold through its rigid structure, ensuring the accurate positioning and shape maintenance of the mold during the foam molding process. The buffer sleeve serves as a buffer layer between the reinforcement rod and the inner concave mold, which can absorb and disperse the vibration and impact force generated by the mold during operation, further enhancing the stability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shows a schematic diagram of the overall structure provided according to an embodiment of the utility model;

[0020] Figure 2 Shows a top view of an inner punch provided according to an embodiment of the utility model;

[0021] Figure 3 Shows a side view of an inner punch provided according to an embodiment of the utility model;

[0022] Figure 4 Shows a rear view of the inner punch provided according to an embodiment of the utility model;

[0023] Figure 5 Shows a structural diagram of a drainage hole provided according to an embodiment of the utility model;

[0024] Figure 6 A partial enlarged schematic diagram of a drainage hole provided according to an embodiment of the present utility model is shown;

[0025] Figure 7 A schematic structural diagram of a reinforcement assembly provided according to an embodiment of the present utility model is shown;

[0026] Figure 8 A top view of a die unit according to an embodiment of the present invention is shown;

[0027] Figure 9 A bottom view of a die unit provided according to an embodiment of the present invention is shown.

[0028] Legend:

[0029] 10. Concave die unit; 11. First outer die; 12. Inner concave die; 13. Connecting bolt; 14. First through hole; 15. Exhaust hole; 16. Reinforcement assembly; 161. Reinforcement rod; 162. Lock nut; 163. Buffer sleeve;

[0030] 20. Punch unit; 21. Second outer mold; 22. Inner punch; 23. Drain hole; 231. Discharge section; 232. Inclined section; 24. Vent; 25. Second through hole. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figures 1-9 The present embodiment provides a foam mold with high efficiency, good air permeability and hydrophobicity, including a concave mold unit 10 and a convex mold unit 20. The concave mold unit 10 includes a first outer mold 11, an inner concave mold 12 is provided on the first outer mold 11, a first through hole 14 is opened on the first outer mold 11, and an exhaust hole 15 is opened at the bottom of the inner concave mold 12. The convex mold unit 20 includes a second outer mold 21, an inner convex mold 22 is provided on the second outer mold 21 to match the inner concave mold 12, a drainage hole 23 that can accelerate drainage and a laser-formed vent 24 are opened on one side of the inner convex mold 22, a second through hole 25 is opened on the second outer mold 21, and a cavity is formed between the inner concave mold 12 and the inner convex mold 22.

[0033] In the present invention, the first outer mold 11 and the second outer mold 21 are used to surround the inner concave mold 12 and the inner convex mold 22, providing necessary support and stability to ensure that the inner mold does not deform during the molding process. When making a foam box, the mold is first preheated, and then the foaming material is injected into the cavity formed between the inner concave mold 12 and the inner convex mold 22. Then, under the action of the foaming agent, the foaming material begins to foam and expand, filling the cavity of the mold. After foaming is completed, cooling water is injected through the first through hole 14 and the second through hole 24 to cool the mold, so that the EPS foam is quickly solidified and shaped. In the process of the foaming material starting to foam and expand and fill the cavity of the mold, the exhaust hole 15 and the vent hole 25 can ensure that the gas in the mold is smoothly discharged to prevent the generation of bubbles, thereby ensuring the quality and appearance of the foam product. During the foaming process, the drainage hole 23 is not only used for drainage, but also can serve as a channel for steam circulation, ensuring that steam can evenly enter the interior of the mold, so that the EPS material is evenly heated and expanded.

[0034] Specifically, such as Figure 5 As shown, the drainage hole 23 includes a discharge section 231, and an inclined section 232 connected to the discharge direction of the discharge section 231 is provided. The drainage hole 23 is formed by laser punching, and the length of the drainage hole 23 is between 1-30 mm and the width is between 0.3-2 mm.

[0035] Among them, when the condensed water enters the inclined section 232 from the discharge section 231, the inclined inclined section 232 will form an acceleration effect when the condensed water is discharged. At the same time, the inclined drainage hole 23 design can better utilize the effect of gravity, so that water or other liquids can be quickly discharged along the inclined channel, thereby significantly improving the drainage efficiency and reducing the residual liquid in the channel, avoiding long-term accumulation leading to blockage or corrosion, thereby extending the service life of the mold.

[0036] Specifically, such as Figure 7 and Figure 9 As shown, the first outer mold 11 is provided with a reinforcement component 16 for reinforcing and fixing the inner mold 12. The reinforcement component 16 includes a reinforcement rod 161 that passes through the first outer mold 11. The reinforcement rod 161 is detachably connected to the first outer mold 11 through a locking nut 162. A buffer sleeve 163 is provided on the reinforcement rod 161.

[0037] Among them, the reinforcement rod 161 effectively improves the overall stability of the mold through its rigid structure, ensuring the accurate positioning and shape maintenance of the mold during the foaming molding process. The rubber buffer sleeve 163 serves as a buffer layer between the reinforcement rod 161 and the inner concave mold 12, which can absorb and disperse the vibration and impact force generated by the mold during operation, further enhancing the stability of the mold.

[0038] Specifically, such as Figure 8As shown, the inner die 12 is detachably connected to the first outer die 11 via connecting bolts 13. The connecting bolts 13 can strengthen the connection between the inner die 12 and the first outer die 11 and enable the inner die 12 to be disassembled, thereby facilitating cleaning and maintenance of the inner die 12.

[0039] It should be noted that the vent holes 15 are connected to the mold cavity and are formed by laser drilling. The vent holes 15 are arranged in an array at the bottom of the inner concave mold 12. Laser drilling has a minimal thermal impact on the material, preventing thermal deformation of the workpiece and helping to maintain the precision and stability of the mold.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foam mold with high efficiency, good air permeability and hydrophobicity, characterized in that: include: A concave mold unit (10), the concave mold unit (10) comprising a first outer mold (11), an inner concave mold (12) being provided on the first outer mold (11), a first through hole (14) being provided on the first outer mold (11), and an exhaust hole (15) being provided at the bottom of the inner concave mold (12); A male mold unit (20) includes a second outer mold (21), an inner male mold (22) matched with an inner female mold (12) is provided on the second outer mold (21), a drainage hole (23) capable of accelerating drainage and a laser-formed vent hole (24) are provided on the inner male mold (22), and a second through hole (25) is provided on the second outer mold (21).

2. A foam mold with high air permeability and good hydrophobicity according to claim 1, characterized in that: The drainage hole (23) comprises a discharge section (231), and an inclined section (232) communicating with the discharge section (231) is provided in the discharge direction of the discharge section (231).

3. A foam mold with high air permeability and good hydrophobicity according to claim 2, characterized in that: The drainage hole (23) is formed by laser punching, and the length of the drainage hole (23) is between 1-30 mm and the width is between 0.3-2 mm.

4. The foam mold with high air permeability and good hydrophobicity according to claim 1, characterized in that: The first outer mold (11) is provided with a reinforcement component (16) for reinforcing and fixing the inner concave mold (12); The reinforcement assembly (16) comprises a reinforcement rod (161) penetrating the first outer mold (11); the reinforcement rod (161) is detachably connected to the first outer mold (11) via a locking nut (162); and a buffer sleeve (163) is sleeved on the reinforcement rod (161).

5. The foam mold with high air permeability and good hydrophobicity according to claim 1, characterized in that: The inner concave mold (12) is detachably connected to the first outer mold (11) via connecting bolts (13).

6. The foam mold with high air permeability and good hydrophobicity according to claim 1, characterized in that: A cavity is formed between the inner concave mold (12) and the inner convex mold (22).

7. The foam mold with high air permeability and good hydrophobicity according to claim 6, characterized in that: The exhaust hole (15) is communicated with the mold cavity, and the exhaust hole (15) is formed by laser drilling.

Images