CN217752435U - Foam and forming device - Google Patents

Abstract

The utility model relates to the field of packaging technology, concretely relates to foam and forming device, wherein the foam includes: a body structure having an assembly face and a non-assembly face, the assembly face adapted to contact a product; and the net structure is integrally formed with the main body structure and covers the non-assembly surface. Through with major structure integrated into one piece network structure, network structure has elasticity and connection performance, and network structure and major structure are compound integrative, can improve the intensity of this foam, avoid the foam atress damage to break back local emergence displacement and the secondary buffering that leads to inefficacy. The net structure covers the non-assembly surface, the net structure is not in contact with the product, the surface protection of the product is not influenced, the non-assembly surface is generally used for placing accessories, the precision requirement is low, and the net structure is integrally formed on the non-assembly surface, so that the influence on the utilization rate of the non-assembly surface can be reduced.

Description

Foam and forming device

Technical Field

The utility model relates to the field of packaging technology, concretely relates to foam and forming device.

Background

The product circulation in the market needs to be supported by a protective package. The product is distributed in the market and needs protective package support. The foam is widely used for packaging and protecting various products, is commonly known as the foam with the highest cost performance in the world, is popular with extensive product research and development companies, and is widely used for packaging and protecting various products. Although the foam buffering material is low in cost and price, the following problems are urgently solved in the face of a new market situation:

the foam is through self deformation and damaged realization buffering effect behind the atress, but the damaged back local easy displacement of foam, and whole buffering overall arrangement is destroyed, is unfavorable for the secondary and strikes the protection. The problem of secondary protection failure caused by breakage and cracking can be solved by increasing the thickness of the foam buffer, but the problem of cost rise caused by increase of the foam consumption and the product packaging volume is also faced. Meanwhile, right angle transition and/or a machine type with larger weight and smaller available buffer area exist on the appearance, and the effect of increasing the buffer thickness on reducing the foam damage degree is very little. The foam structure design form is limited, and reinforcing ribs can not be arranged on the surface and inside of the injection molding part to improve the strength and reduce the damage. The foam therefore fails to address the impact failure problem at low cost at the structural design end. Foams belong to foamed materials and are cohesive by fusion between foamed particles, but have limited cohesion. The current mode of improving cohesion is that inside adds all kinds of materials such as fibre, and equipment, the technology level that satisfies the demand is high, and the processing cost is high, does not accord with the flat market trend. The light weight of the package gradually becomes a world hotspot, and meanwhile, the investment of the package protection cost and the reduction of the package volume are also one of important means for reducing the cost and improving the profit of each enterprise. Therefore, solving the contradiction between the thinning of the foam and the guarantee of the secondary protection effect becomes the key for the research of the packaging industry.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the foam among the prior art and taking place the displacement, the relatively poor defect of secondary cushioning performance partially easily behind the damage to a forming device who has the foam of secondary cushioning performance and be used for processing the foam is provided.

In order to solve the above technical problem, the utility model provides a pair of foam, include:

a body structure having an assembly face and a non-assembly face, the assembly face adapted to contact a product;

and the net structure is integrally formed with the main body structure and covers the non-assembly surface.

Optionally, the main body structure has a bottom surface and a peripheral side surface, and the bottom surface and the side surface constitute the non-assembly surface.

Optionally, the main body structure has a cavity, and the bottom wall and the side wall of the cavity form the assembling surface.

Optionally, the main body structure is formed by foaming particles, and the net structure is formed by weaving high-temperature-resistant materials.

Optionally, the mesh structure is made of fiber strands or nylon.

Optionally, the mesh of the mesh structure is one of rectangular, diamond, triangular.

The utility model also provides a forming device for the shaping the foam, forming device includes:

the forming die comprises a lower die and an upper die, the lower die is provided with a lower die cavity matched with the shape of the non-assembly surface, the upper die is provided with a forming part for forming the assembly surface, and the upper die and the lower die are matched to form a forming cavity matched with the shape of the main body structure;

and the material net is suitable for being laid on the lower die, is suitable for covering the bottom wall and the side wall of the lower die cavity under the action of gravity and is used for forming the net-shaped structure.

Optionally, a cutting knife is arranged on the end surface of the upper die facing the lower die, and the cutting knife extends along the circumferential direction and is close to the edge of the upper die.

Optionally, a knife groove is formed at the top end of the lower die, and the knife groove corresponds to the cutting knife.

Optionally, the side wall of the lower mold cavity is provided with hooks.

The utility model discloses technical scheme has following advantage:

the utility model provides a foam, through with major structure integrated into one piece network structure, network structure has elasticity and connection performance, and network structure and major structure are compound integrative, can improve the intensity of this foam, avoid the damaged back part of foam atress to take place the displacement and the secondary buffering that leads to is inefficacy. The net structure covers the non-assembly surface, the net structure is not in contact with the product, the surface protection of the product is not affected, the non-assembly surface is generally used for placing accessories, the precision requirement is low, and the net structure is integrally formed on the non-assembly surface, so that the influence on the utilization rate of the non-assembly surface can be reduced. The foam is adopted for products with larger weight, so that the cracking resistance of the products can be improved, the secondary impact resistance protection effect can be improved, the thickness of a main body structure can be properly reduced, the protection cost investment can be reduced, the packaging volume can be reduced, and the transportation cost can be reduced; the foam is adopted for products with smaller weight, so that the foam structure can be further simplified, and the pertinence and the effective degree of the protection cost input are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the structure of the foam provided in example 1 of the present invention at an angle;

fig. 2 is a schematic view of the structure of the foam provided in example 1 of the present invention at another angle;

fig. 3 is a schematic structural view of a lower die provided in embodiment 2 of the present invention;

fig. 4 is a schematic structural view of an upper die provided in embodiment 2 of the present invention;

fig. 5 is a schematic structural view of a material web provided in example 2 of the present invention;

FIG. 6 is a schematic view of the arrangement of the web of material on the lower die;

fig. 7 is a schematic view of the structure of the web of material as it engages the lower die cavity under the force of gravity.

Description of reference numerals:

1. a body structure; 101. a bottom surface; 102. a side surface; 103. a concave cavity; 2. a network structure; 3. a lower die; 301. a lower die cavity; 302. a cutter groove; 4. an upper die; 401. a molding section; 402. a cutting knife; 5. a web of material.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The foam is through self deformation and damaged realization buffering effect behind the atress, but the damaged back local easy displacement of foam, and whole buffering overall arrangement is destroyed, is unfavorable for the secondary and strikes the protection. The problem of secondary protection failure caused by breakage and cracking can be solved by increasing the thickness of the foam buffer, but the problem of cost rise caused by increase of the foam consumption and the product packaging volume is also faced. Meanwhile, right angle transition or a machine type with larger weight and smaller available buffer area exists for the appearance, and the effect of increasing the buffer thickness on reducing the foam damage degree is very little. The foam structure design form is limited, and reinforcing ribs can not be arranged on the surface and inside of the injection molding part to improve the strength and reduce the damage. Foam therefore cannot address the impact breakage problem at low cost at the design end of the structure. Foams are foamed materials, and cohesion is formed by fusion between foamed particles, but cohesion is limited. The current mode of improving cohesion is that inside adds all kinds of materials such as fibre, and equipment, the technology level that satisfies the demand is high, and the processing cost is high, does not accord with the flat market trend.

Therefore, the embodiment provides a foam which has secondary cushioning performance, is beneficial to secondary impact protection, and does not need to increase the volume.

In one embodiment, as shown in fig. 1 and 2, the foam comprises a body structure 1 and a mesh structure 2. Wherein the main body structure 1 is provided with an assembling surface and a non-assembling surface, and the assembling surface is suitable for being in contact with a product; the net structure 2 is integrally formed with the main structure 1 and covers the non-assembly surface.

In this embodiment, through with the major structure 1 integrated into one piece network structure 2, network structure 2 has elasticity and connectivity, and network structure 2 and major structure 1 compound one-tenth are integrative, can improve the intensity of this foam, avoid the foam atress damage after the fracture local displacement and the secondary cushion that leads to become invalid. Because network structure 2 covers the non-assembly face, network structure 2 does not contact with the product, does not have the influence to product surface protection, and the non-assembly face is generally used for placing the accessory, and the precision requirement is lower, and network structure 2 integrated into one piece can reduce the influence to the utilization ratio of non-assembly face at the non-assembly face. The foam is adopted for products with larger weight, so that the cracking resistance of the products can be improved, the secondary impact resistance protection effect can be improved, the thickness of the main body structure 1 can be properly reduced, the protection cost investment can be reduced, the packaging volume can be reduced, and the transportation cost can be reduced; the foam is adopted for products with smaller weight, so that the foam structure can be further simplified, and the pertinence and the effective degree of protection cost input are improved.

In addition to the above embodiments, in a preferred embodiment, as shown in fig. 2, the main body structure 1 has a bottom surface 101 and peripheral side surfaces 102, and the bottom surface 101 and the side surfaces 102 constitute a non-mounting surface. In this embodiment, the net structure 2 covers the bottom surface 101 and the peripheral side surfaces 102 of the main body structure 1, and the strength of the foam can be improved, thereby preventing the secondary cushion failure due to partial displacement after the foam is broken and cracked by a force. Of course, in other alternative embodiments, when the main body structure 1 has other shapes, the non-assembly surface may refer to the outer surface of the main body structure 1.

In addition to the above embodiments, in a preferred embodiment, as shown in fig. 1, the main body structure 1 has a cavity 103, and the bottom wall and the side wall of the cavity 103 constitute a mounting surface. In this embodiment, the product may be placed in cavity 103, which ensures that the product is secured.

In addition to the above embodiments, in a preferred embodiment, the main body structure 1 is formed by foaming particles, and the net structure 2 is formed by weaving a high temperature resistant material. In this embodiment, can ensure that foaming particle can not cause destruction to network 2 in the foaming process, foaming particle is fully connected with network 2 in the foaming process, and foaming particle fully fills in network 2's net space, and foaming particle carries out certain butt fusion with network 2, has the promotion to both joint strength.

On the basis of the above embodiments, in a preferred embodiment, the net structure 2 is made of fiber strands or nylon. In this embodiment, the net-shaped structure 2 is made of fiber strips or nylon, so that the net-shaped structure 2 has certain elasticity and connection performance and is not easy to break, thereby improving the strength of the foam and avoiding secondary buffer failure caused by partial displacement after the foam is stressed, damaged and cracked.

On the basis of the above embodiments, in a preferred embodiment, the mesh of the net structure 2 is one of a rectangle, a diamond, and a triangle. Specifically, the shape of the mesh is most commonly rectangular, and can be changed according to specific requirements, such as rhombus, triangle and the like, and the shape of the mesh has no special requirements and can be a common shape, so that the cost is reduced.

It should be noted that the size of the mesh can be adjusted according to the size of the used expanded beads to achieve the optimal welding effect and optimize the reinforcing effect.

Example 2

This embodiment provides a molding apparatus for molding the foam provided in the above embodiments.

In one embodiment, as shown in fig. 3-5, the forming device includes a forming die and a web of material 5. The forming die comprises a lower die 3 and an upper die 4, the lower die 3 is provided with a lower die cavity 301 matched with the shape of the non-assembly surface, the upper die 4 is provided with a forming part 401 used for forming the assembly surface, and the upper die 4 and the lower die 3 are matched into a forming cavity matched with the shape of the main structure 1 in a forming mode; with reference to fig. 6 and 7, the material web 5 is adapted to be laid on the lower mold 3, the material web 5 being adapted to cover the bottom wall and the side walls of the lower mold cavity 301 under the influence of gravity, the material web 5 being used to form the network 2.

In this embodiment, specifically, when the foam is produced, as shown in fig. 6, the material web 5 is first placed on the lower mold 3, and further referring to fig. 7, the material web 5 and the lower mold cavity 301 are brought into a preliminary following fit state by the gravity of the material web 5 itself, and then the upper mold 4 and the lower mold 3 are aligned and closed, and the foam particles are injected into the molding cavity. The material net 5 is more attached to the bottom wall and the side wall of the lower die cavity 301 by utilizing the thrust of the diffusion motion of the foaming particles to the periphery and the lower die cavity 301 by filling. The foaming particles continue to foam in the forming cavity, and the particles form a welding relation to generate welding force, and meanwhile, the particles can tightly fill the grid gaps in the material net 5 and generate similar welding force on the material net 5. After the pressure and temperature conditions are achieved, the upper die 4 and the lower die 3 are separated, and the foam with the grid structure tightly attached to the main structure 1 is obtained.

In addition to the above embodiments, in a preferred embodiment, a cutting blade 402 is provided on an end surface of the upper die 4 facing the lower die 3, and the cutting blade 402 extends in the circumferential direction and is close to the edge of the upper die 4. In this embodiment, the cutting blade 402 is provided such that when the upper and lower dies 4 and 3 are closed, the cutting blade 402 can cut the web 5 to remove excess web 5 outside the foam molding range.

In addition to the above embodiments, in a preferred embodiment, the top end of the lower mold 3 is provided with the cutter groove 302, and the cutter groove 302 corresponds to the cutter blade 402. In this embodiment, the cutter groove 302 is capable of engaging with the cutter 402, and when the upper mold 4 is closed on the lower mold 3, the cutter 402 is inserted into the cutter groove 302, so that the cutter 402 cuts the web 5 to remove the excess web 5 outside the foam molding range.

On the basis of the above embodiments, in a preferred embodiment, the side wall of the lower mold cavity 301 is provided with hooks. In this embodiment, the hooks are used for hooking the material web 5 and positioning the material web 5, especially when the structure of the lower mold cavity 301 is complex and large in number.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. A foam, comprising:

a body structure (1), said body structure (1) having a mounting face and a non-mounting face, said mounting face being adapted to be in contact with a product;

and the net structure (2) is integrally formed with the main body structure (1) and covers the non-assembly surface.

2. Foam according to claim 1, wherein the body structure (1) has a bottom surface (101) and peripheral side surfaces (102), the bottom surface (101) and the side surfaces (102) constituting the non-assembly surface.

3. Foam according to claim 1, wherein the body structure (1) has a cavity (103), wherein the bottom wall and the side walls of the cavity (103) constitute the assembly surface.

4. A foam according to any of claims 1-3, wherein the body structure (1) is formed by expanded particles and the web structure (2) is woven from a high temperature resistant material.

5. Foam according to claim 4, characterized in that the net-like structure (2) is made of fiber strands.

6. A foam according to any of claims 1-3, wherein the cells of the reticulated structure (2) are one of rectangular, diamond-shaped, triangular.

7. A molding apparatus for molding the foam of any one of claims 1 to 6, comprising:

the forming die comprises a lower die (3) and an upper die (4), the lower die (3) is provided with a lower die cavity (301) matched with the shape of the non-assembly surface, the upper die (4) is provided with a forming part (401) used for forming the assembly surface, and the upper die (4) and the lower die (3) are matched into a forming cavity matched with the shape of the main structure (1);

-a material web (5) adapted to be laid on the lower mould (3), the material web (5) being adapted to cover the bottom wall and the side walls of the lower mould cavity (301) under the action of gravity, the material web (5) being used to form the web-like structure (2).

8. The molding device according to claim 7, characterized in that a cutting knife (402) is provided on the end face of the upper mold (4) facing the lower mold (3), the cutting knife (402) extending circumferentially and being close to the edge of the upper mold (4).

9. The molding apparatus as claimed in claim 8, wherein a top end of the lower mold (3) is provided with a cutter groove (302), and the cutter groove (302) corresponds to the cutter (402).

10. Moulding device according to claim 7, characterized in that the side walls of the lower mould cavity (301) are provided with hooks.

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