CN213137516U

CN213137516U - Packaging cushion and manufacturing mold thereof

Info

Publication number: CN213137516U
Application number: CN202020307533.5U
Authority: CN
Inventors: 李先刚
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2021-05-07
Anticipated expiration: 2030-03-12

Abstract

The utility model relates to an electrical apparatus package field discloses a packing pad and mould is made to it, the packing pad sets up to including two at least subregions in the extension plane, the packing pad is in each the subregion intra-area has homogeneous density, and at least two the density of subregion is different. The manufacturing mould is internally provided with a detachable clapboard, the mould is divided into at least two mould subareas through the clapboard, and the mould is provided with a material injection hole in each mould subarea so as to form at least two subareas with different densities of the packaging cushion through the at least two mould subareas. The packaging cushions are arranged such that the density of different areas in the plane of extension may be different, so that the packaging cushions have a lower weight and a lower manufacturing cost while meeting the strength requirements of the appliance.

Description

Packaging cushion and manufacturing mold thereof

Technical Field

The utility model relates to an electrical apparatus package field specifically relates to a packing pad and manufacturing mould thereof.

Background

During transportation of the electric appliance, it is usually necessary to use a packing pad to pack the electric appliance to protect the electric appliance from being damaged by bumping and collision, for example, a bottom pad is padded under the refrigerator during the packing and transportation of the refrigerator, and the packing pad is usually made of foam material, such as EPS foam packing pad.

The density of the existing foam packing cushions is uniform in the extension plane, namely the density is the same at each position, but the actually required minimum density of the foam packing cushions which can meet the protection requirements can be different due to different structures, weights, strengths and protection requirements of all parts of the electric appliance. If the density of the foam packing mattress is set to be the largest of the density values required everywhere in order to make the foam packing mattress meet the strength requirement everywhere, the density of other parts actually exceeds or even far exceeds the strength requirement, which not only causes waste of materials and increase of cost, but also most of the foam packing mattresses with high density may not have enough elasticity although the strength is enough, and the best protection effect for the electric appliance cannot be obtained.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a packing pad, this packing pad sets up to different regional density can be different in the extension plane to make packing pad weight and manufacturing cost are lower when having the required intensity requirement of satisfying the electrical apparatus.

In order to achieve the above object, one aspect of the present invention provides a packaging cushion configured to include at least two sub-regions in an extension plane, the packaging cushion having a uniform density in each of the sub-regions, and at least two of the sub-regions having different densities.

Preferably, the sub-areas comprise a first density sub-area and a second density sub-area, the density of the first density sub-area being greater than the density of the second density sub-area, the packaging cushion further comprising a transition portion between the first density sub-area and the second density sub-area, the density of the transition portion being between the density of the first density sub-area and the density of the second density sub-area.

Preferably, a cross section of the packing pad taken perpendicular to the thickness direction is a polygon, and the packing pad is formed as the first density sub-area at each corner of the polygon.

Preferably, the packaging cushions are formed in a central portion as the second density sub-area.

Preferably, the packaging cushions are formed at the edges as the first density sub-area.

Preferably, the packaging cushion is a single material packaging cushion and the porosity of at least two of the sub-areas is different.

Preferably, the packaging pad is an EPS packaging pad.

Preferably, the appliance is a refrigerator and the packaging pad is a base pad for the refrigerator.

Preferably, the packaging pad is a unitary piece.

Another aspect of the present invention provides a manufacturing mold for a packing mat according to the present invention, wherein a detachable partition plate is provided in the manufacturing mold, and the mold is divided into at least two mold sub-regions by the partition plate, and the mold is formed with a material injection hole in each of the mold sub-regions, so that at least two sub-regions of the packing mat having different densities can be formed by at least two of the mold sub-regions.

Through the technical scheme, make according to the utility model discloses a packing pad is according to the specialization demand of the electrical apparatus of using and is having different densities, for example can set up the subregion that has higher density at the position that is higher to the intensity demand, and can set up the subregion that has lower density adaptively at the position that is lower to the intensity demand, each subregion inside density is the homogeneous, but then have two kinds of different densities at least to whole packing pad, therefore, make each position of packing pad all satisfy required intensity, when the elasticity demand, can also make the required material of manufacturing packing pad minimum, the whole weight of packing pad and cost reduction.

Drawings

FIG. 1 is a schematic view of a packaging cushion according to one embodiment of the present invention;

fig. 2 is a schematic view of a mold for making the packaging cushion of fig. 1.

Description of the reference numerals

1 first density sub-region 2 second density sub-region

3 material injection hole

Detailed Description

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

In the present invention, it should be understood that the terms "deviation", "orientation", "height", "parallel", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and also correspond to orientations or positional relationships in actual use; the use of directional words such as "upper" and "lower" generally means up and down as illustrated with reference to the accompanying drawings; "inner and outer" refer to the inner and outer relative to the contours of the components themselves and are not intended to indicate that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention; also, the "extension plane" of the packing mat described in this application refers to a plane of the packing mat perpendicular to the thickness direction thereof.

The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments. An aspect of the present invention provides a packaging cushion configured to include at least two sub-regions in an extension plane, the packaging cushion being in each of the sub-regions having a uniform density, and the packaging cushion having at least two different densities of at least two of the sub-regions being different in density.

In general, if a cross section of the packing pad taken perpendicular to the thickness direction is a polygon, the packing pad is preferably formed as the first density sub-area 1 at each corner of the polygon, and at this time, the packing pad may be formed as the second density sub-area 2 at a central portion according to a requirement, and the density of the first density sub-area 1 is greater than that of the second density sub-area 2, so that the each corner has greater strength. .

For example, the appliance may be a refrigerator and the packing mat may be a bottom mat for a refrigerator, which generally has a substantially rectangular profile, see fig. 1, and four corners of the rectangle are generally set as the high-intensity sub-areas 1 and the middle portion is set as the low-intensity sub-area 2.

In addition, the packaging cushions are preferably formed at the edges, in general, as the first density sub-areas 1, in order to increase the strength of the edges of the packaging cushions and to prevent the packaging cushions from being damaged by themselves.

Typically, the packaging cushion is a single material packaging cushion, and the porosity of at least two of the sub-areas is different, i.e. the packaging cushion is made of the same material throughout or in each sub-area, e.g. the packaging cushion is an EPS packaging cushion, and the density in different sub-areas is made different by setting the porosity in different sub-areas to be different. In this case, the packaging cushion is preferably in one piece, which may be cast in one piece, for example, by means of a mold.

Of course, the individual sub-areas of the packaging mat can also be made of different materials, depending on the actual requirements.

Also, as an embodiment, the sub-regions may include a first density sub-region 1 and a second density sub-region 2, the density of the first density sub-region 1 is greater than that of the second density sub-region 2, and the packaging cushion further includes a transition portion located between the first density sub-region 1 and the second density sub-region 2, the density of the transition portion is between that of the first density sub-region 1 and that of the second density sub-region 2, for example, if the foam cushion is formed by casting the same material, the transition portion is a welding region of the first density sub-region 1 and the second density sub-region 2, or a region where a high density material and a low density material are welded to each other to form a whole.

In addition, according to the utility model discloses another aspect still provides the manufacturing mould of packing pad, is provided with the detachable baffle in this manufacturing mould to this mould passes through the baffle is separated for at least two mould subregion, the mould all is formed with notes material hole 3 in each the mould subregion to can form through at least two the mould subregion the at least two subregion that the density is different of packing pad and the baffle is for dismantling.

Fig. 2 shows a mold for manufacturing the packaging cushion in fig. 1, for example, the packaging cushion in fig. 1 is an integral EPS packaging cushion, the section of the packaging cushion taken perpendicular to the thickness direction is approximately rectangular, four regions are separated by partition boards at four corners of the rectangle, and injection holes 3 are respectively formed in the four regions, during the manufacturing process, high-density materials can be firstly injected into the four regions from the injection holes 3 at the four corners respectively, when the materials are filled for a period of time, but the materials in the four regions are basically molded but are not solidified, then low-density materials are injected into the central region of the mold from the injection holes 3 in the center of the mold, and the partition boards are removed simultaneously, so that the low-density materials not only flow to the periphery in the central region and are welded with the high-density materials which are not solidified at the boundary, the EPS packing cushion is fused into a whole, and after the whole EPS packing cushion is molded, the whole EPS packing cushion is subjected to demoulding, so that the integrated packing cushion with the first density subarea 1 positioned at four corners, the second density subarea 2 at the center and the transition part connecting the first density subarea 1 and the second density subarea 2 is formed.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical scheme of the utility model in the technical conception scope, can be right carry out multiple simple variant. Including each of the specific features, are combined in any suitable manner. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A packaging cushion, characterized in that it is arranged to comprise at least two sub-areas in an extended plane, said packaging cushion having a uniform density in each of said sub-areas, and the density of at least two of said sub-areas being different.

2. A packaging cushion according to claim 1, wherein the sub-areas comprise a first density sub-area (1) and a second density sub-area (2), the density of the first density sub-area (1) being greater than the density of the second density sub-area (2), the packaging cushion further comprising a transition portion between the first density sub-area (1) and the second density sub-area (2), the transition portion having a density between the density of the first density sub-area (1) and the density of the second density sub-area (2).

3. A packaging cushion according to claim 2, wherein the cross-section of the packaging cushion taken perpendicularly to the thickness direction is a polygon, the packaging cushion being formed into the first density sub-region (1) at each corner of the polygon.

4. A packaging cushion according to claim 3, wherein the packaging cushion is formed in a central portion as the second density sub-area (2).

5. A packaging cushion according to claim 2, wherein the packaging cushion is formed at the edges into the first density sub-area (1).

6. A packaging cushion according to claim 1, wherein the packaging cushion is a single material packaging cushion and the porosity of at least two of the sub-areas is different.

7. A packaging cushion according to claim 1, wherein the packaging cushion is an EPS packaging cushion.

8. The packaging cushion according to claim 1, wherein the packaging cushion is a base cushion for a refrigerator.

9. A packaging cushion according to any one of claims 1 to 8, wherein the packaging cushion is in one piece.

10. A manufacturing mould for packaging cushions, characterised in that a detachable partition is arranged in the manufacturing mould and the mould is divided by the partition into at least two mould sub-areas, the mould being formed with an injection opening (3) in each of the mould sub-areas in order to be able to form at least two sub-areas of the packaging cushion with different densities through at least two of the mould sub-areas.