CN215983507U

CN215983507U - Prevent foaming deformation device, door body and refrigerator

Info

Publication number: CN215983507U
Application number: CN202121990255.9U
Authority: CN
Inventors: 朱万象; 李宗照; 清苏珍; 疏超; 王咸鑫
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-03-08
Anticipated expiration: 2031-08-23

Abstract

The utility model provides a foaming deformation prevention device, a door body and a refrigerator, relates to the technical field of refrigerators, and solves the technical problem that the door body is easy to deform due to the fact that a foaming layer of the door body is large in thickness. The anti-foaming deformation device comprises a support frame arranged in a foaming cavity and an anti-stress barrier strip arranged between the top of the support frame and the wall of the foaming cavity and provided with a gap, wherein the anti-stress barrier strip is made of a flexible material; the door body comprises a foaming upper die device, a foaming deformation prevention device, a foaming lower die device covering the foaming upper die device to form a foaming cavity, and a door body foaming material formed in the foaming cavity in a foaming mode. The utility model can separate the door foaming layer in the center of the foaming foam when the foaming material is molded, reduces the outward stress of the door liner and the door shell perpendicular to the interface in the foaming process, reduces the inward stress perpendicular to the interface when the foam shrinks, and simultaneously, the stress-preventing strip arranged in the center of the foaming foam has a certain separation effect on the expansion and shrinkage of the foam.

Description

Prevent foaming deformation device, door body and refrigerator

Technical Field

The utility model relates to the technical field of refrigerators, in particular to a foaming deformation preventing device, a door body and a refrigerator.

Background

As a necessity of the current household, the energy-saving requirement of the refrigerator on the market is higher and higher, the heat-insulating property of a refrigerator door body is an important index influencing the energy-saving property of the refrigerator, and the increase of the thickness of a foaming layer of the door body is the best way for improving the heat-insulating property of the refrigerator. However, the deformation of the door shell and the door liner caused by the increase of the thickness of the foamed layer of the door body is one of the main reasons for limiting the energy efficiency reduction of the refrigerator. The foaming thickness of the door body is increased because the foaming reaction of the door body comprises chain growth and foaming reaction, and after the fixation of the door body is just released by a mould, the foam has a small part of chain growth reaction and can be finished (cured) within a certain time, the door body has slight bulge, and particularly the surface of a door liner with insufficient strength is more prominent; because a certain temperature difference exists between the foaming process of the door body and the foaming process; after the door body is demoulded and cooled, the foam shrinks due to the condensation of gas in the foam holes, and the thicker the foam layer is, the larger the temperature difference is, the larger the foam deformation quantity is; while the more deformation the foam causes to the article.

How to solve the problem that the door body is deformed due to the large thickness of the foaming layer of the door body and provide the energy-saving door body and the refrigerator is a problem to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a foaming deformation prevention device, a door body and a refrigerator, and aims to solve the technical problem that the door body is easy to deform due to the fact that a foaming layer of the door body is large in thickness in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a foaming deformation prevention device which comprises a support frame arranged in a foaming cavity and an anti-stress barrier strip arranged between the top of the support frame and the wall of the foaming cavity and provided with a gap.

As a further improvement of the utility model, the height of the support frame corresponding to the thickness direction of the foaming cavity is equal to half of the thickness of the foaming cavity.

As a further improvement of the utility model, the support frame is of a cuboid frame structure and comprises a base and a support seat, wherein the base is of a flat plate structure and is provided with a window; the supporting seat is of an inverted U-shaped structure and is connected to two sides of the base.

As a further improvement of the utility model, the two side walls of the supporting seat are provided with liquid passing grooves.

As a further improvement of the utility model, the liquid passing groove penetrates along the length direction of the side wall of the supporting seat.

As a further improvement of the utility model, the number of the liquid passing grooves is at least one.

As a further improvement of the utility model, the anti-stress barrier strip is of a flat plate structure, and a side surface of the anti-stress barrier strip, which is far away from the support frame, is provided with an adhesion assisting structure.

As a further improvement of the utility model, the adhesion assisting structure is a convex strip which is arranged in a penetrating way along the length direction of the stress-proof barrier strip.

As a further improvement of the utility model, the number of the convex strips is at least one.

As a further improvement of the utility model, the anti-stress barrier strip is made of a material with flexibility.

As a further improvement of the utility model, the anti-stress barrier strip is made of ABS or HIPS materials.

As a further improvement of the utility model, the bottom surface of the base is provided with a double-sided adhesive layer, and the top surface of the support seat is provided with a double-sided adhesive layer.

As a further improvement of the utility model, the double-sided adhesive layer is made of 3M adhesive tape.

The utility model provides a door body, which comprises a foaming upper die device, a foaming deformation prevention device arranged in the foaming upper die device, a foaming lower die device covering the foaming upper die device to form a foaming cavity, and a door body foaming material foamed and formed in the foaming cavity.

As a further improvement of the utility model, the foaming deformation preventing device is a set, and is arranged on a door guide rail reinforcing iron in the foaming upper die device.

As a further improvement of the present invention, the number of the anti-foaming deformation devices is two or more, wherein one set of the anti-foaming deformation devices is installed on a door guide rail reinforcing iron in the upper foaming mold device, and all other anti-foaming deformation devices are installed on a door liner in the upper foaming mold device.

The utility model provides a refrigerator which comprises a door body.

The anti-foaming deformation device provided by the utility model is arranged on the inner side of the door liner, and can enable a foaming material to separate a door body foaming layer in the center of foaming foam during molding, so that the outward stress of the foam on the door liner and the door shell perpendicular to an interface during foaming is reduced, the inward stress perpendicular to the interface during foam contraction is reduced, and meanwhile, the anti-stress strip arranged in the center of the foaming foam has a certain barrier effect on foam expansion and contraction; in conclusion, the problem of foaming deformation of the door body is solved, and the problem of deformation of door body parts caused by foaming, bulging and shrinkage of the door body is solved; by arranging the anti-foaming deformation device, the foaming layer in the door body is divided into two parts, so that the quality problems of cracking of the foaming layer of the door body, bulging, deformation and debonding of a door liner, deformation of a door shell and the like caused by stress generated by chain growth reaction after the door body is demoulded are solved; by arranging the support frame and arranging the window and the overflowing hole on the support frame, the foaming material is prevented from being blocked to flow; the fusion degree between the foaming material and the foaming deformation prevention device can be further improved by arranging the convex strips and the windows; the utility model also provides a door body with a foaming layer with enough thickness so as to meet the requirements of heat preservation and energy conservation of the refrigerator.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 structural view of the foaming deformation preventing device of the present invention;

FIG. 2 is a schematic structural diagram of a support frame in the anti-foaming deformation device of the present invention;

FIG. 3 is a schematic structural diagram of an anti-stress stop strip in the anti-foaming deformation device of the present invention;

FIG. 4 is a schematic structural view of the upper foaming mold device and the lower foaming mold device of the door body of the present invention when they are not mounted on the mold;

FIG. 5 is a schematic structural view of the door body of the present invention;

FIG. 6 is a schematic structural diagram of two sets of anti-foaming deformation devices arranged in the lower foaming mold device in the door body.

In the figure 1, a support frame; 11. a base; 12. a support seat; 13. a window; 14. a liquid passing groove; 2. a stress-resistant barrier strip; 21. a convex strip; 100. a foaming upper die device; 200. a foaming lower die device; 300. a door guide rail reinforcing iron; 400. a door liner.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

As shown in figure 1, the utility model provides a foaming deformation prevention device, which comprises a support frame 1 arranged in a foaming cavity and a stress prevention barrier strip 2 arranged between the top of the support frame 1 and the wall of the foaming cavity and provided with a gap.

According to the door body foaming deformation preventing device, the door body foaming foam layer is separated from the center of the foaming foam, so that the outward stress of the foam generated in the foaming process on the door liner and the door shell perpendicular to the interface is reduced, and the inward stress perpendicular to the interface when the foam shrinks is reduced; meanwhile, the anti-stress strip arranged in the center of the foaming foam has a certain barrier effect on expansion and contraction of the foam; the problem of door body foaming deformation is solved to sum up.

Further, the height of the support frame 1 is equal to half of the thickness of the foaming cavity. Therefore, the foaming material positioned in the foaming cavity can be divided into two parts within half of the height during the molding, namely the foaming layer is divided into two parts from the door liner to the whole thickness range of the door shell, the foaming layers on the two sides can reduce the stress applied to the door liner or the door shell through the dividing point, so that the deformation of the door body is reduced, and the flexible deformation of the anti-stress barrier strip 2 can further reduce the foaming deformation stress.

As shown in fig. 2, as an alternative embodiment of the present invention, the supporting frame 1 is a rectangular parallelepiped frame structure, and includes a base 11 and a supporting seat 12, wherein the base 11 is a flat plate structure, and a window 13 is disposed thereon; the supporting seat 12 is an inverted U-shaped structure and is connected to two sides of the base 11.

Further, in the present embodiment, the base 11 is a square or rectangular plate-shaped structure, the supporting seat 12 has a certain width, the width is equal to or less than the width of the base 11, and the length of the supporting seat 12 is less than the length of the base 11. Furthermore, liquid passing grooves 14 are provided on both side walls of the stay 12 in order to smoothly flow the foaming liquid.

Furthermore, the liquid passing groove 14 is provided to penetrate along the longitudinal direction of the side wall of the stay 12.

Further, the number of the liquid passing grooves 14 is at least one. In the present embodiment, as shown in fig. 2, the number of the liquid passing grooves 14 is two, and the two liquid passing grooves 14 are arranged in parallel at intervals, however, the liquid passing grooves 14 may be arranged in other numbers, and are not limited to the two embodiments, and can be selectively arranged according to the width of the seat 12; of course, the liquid passing groove 14 may be provided in a plurality of discrete hole patterns, which is not limited herein.

As an alternative embodiment of the present invention, as shown in fig. 3, the anti-stress bar 2 is a flat plate structure, and the surface of the side far away from the support frame 1 is provided with an adhesion-promoting structure.

It should be noted that the width of the anti-stress barrier 2 is equal to the width of the top surface of the supporting seat 12. The anti-stress barrier strip 2 is connected with the supporting seat 12 through a double-faced adhesive layer on the top surface of the supporting seat 12.

As shown in fig. 3, further, the adhesion promoting structure is a protruding strip 21 penetrating along the length direction of the stress-preventing barrier 2.

Further, the number of the convex strips 21 is at least one.

By arranging the convex strips 21, a plurality of shallow groove structures are formed on the surface of the anti-stress barrier strip 2, and the convex strips 21 form separation strips among the shallow grooves.

As an alternative embodiment of the present invention, the stress-preventing barrier 2 is made of a flexible material, and specifically, the stress-preventing barrier 2 is made of ABS or HIPS.

The support frames 1 are fixed in the foaming upper die assembly, the anti-stress barrier strip 2 is fixed in the foaming upper die assembly through the two support frames 1, the anti-stress barrier strip 2 is made of flexible materials, and can generate small or small deformation when the anti-stress barrier strip 2 is stressed, so that the extrusion stress of parts such as a door inner container and a door shell during foaming is reduced.

Further, the bottom surface of the base 11 is provided with a double-sided adhesive layer, and the top surface of the support seat 12 is provided with a double-sided adhesive layer.

In order to improve the bonding firmness, the double-sided adhesive layer is made of 3M adhesive tape.

As shown in fig. 4 and 5, the present invention further provides a door body, which includes an upper foaming mold device 100, a device for preventing foaming deformation disposed in the upper foaming mold device 100, a lower foaming mold device 200 covering the upper foaming mold device 100 to form a foaming cavity, and a door body foam formed in the foaming cavity.

It should be noted that the upper foaming mold device 100, the lower foaming mold device 200 and the door foaming material are all products in the prior art, and technical improvements are not made to these parts in the present invention, so that redundant details are not described.

As shown in fig. 4, when the door body is not large in size, the number of the anti-foaming deformation devices is one, and the anti-foaming deformation devices are mounted on the door rail reinforcing iron 300 in the upper foaming mold device 100.

As shown in fig. 6, when the size of the door body is large, the number of the anti-foaming deformation devices is two or more, one set of the anti-foaming deformation devices is installed on the door guide rail reinforcing iron 300 in the upper foaming mold device 100, and all other anti-foaming deformation devices are installed on the door liner 400 in the upper foaming mold device 100.

The utility model also provides a refrigerator which comprises the door body.

The anti-foaming deformation device provided by the utility model is arranged on the inner side of the door liner 400, and can enable a foaming material to separate a door body foaming layer at the center of foaming foam during molding, so that the outward stress of the foam generated in the foaming process on the door liner 400 and the door shell perpendicular to an interface is reduced, the inward stress perpendicular to the interface during foam shrinkage is reduced, and meanwhile, the anti-stress barrier strip 2 arranged at the center of the foaming foam has a certain barrier effect on foam expansion and shrinkage; in conclusion, the problem of foaming deformation of the door body is solved, and the problem of deformation of door body parts caused by foaming, bulging and shrinkage of the door body is solved; by arranging the anti-foaming deformation device, the foaming layer in the door body is divided into two parts, so that the quality problems of cracking of the foaming layer of the door body, bulging, deformation and debonding of a door liner, deformation of a door shell and the like caused by stress generated by chain growth reaction after the door body is demoulded are solved; by arranging the support frame 1 and arranging the window 13 and the overflowing hole 14 on the support frame 1, the foaming material is prevented from being blocked to flow; the fusion degree between the foaming material and the anti-foaming deformation device can be further improved by arranging the convex strips 21 and the windows 13; the utility model also provides a door body with a foaming layer with enough thickness so as to meet the requirements of heat preservation and energy conservation of the refrigerator.

The utility model provides an energy-saving door body, which comprises an upper foaming mold device 100, a lower foaming mold device 200 and foaming materials (combined polyether and isocyanate components);

before foaming of the door body: the foaming upper die device 100 is clamped in the upper die of the die; the foaming lower die device 200 is horizontally placed in the lower die of the die; injecting a polyurethane foaming material by a foaming device; and (3) foaming process: closing and tightening the upper die and the lower die of the die, and forming a door foaming component through chain growth and foaming reaction (milky white, wire drawing and non-sticking);

the foaming upper die device comprises a door liner 400, two door guide rail reinforcing irons 300 and two sets of foaming deformation prevention devices; the door foaming example provided by the utility model can comprise one foaming deformation prevention device or two foaming deformation prevention devices; only when the foaming height of the door body is larger, two anti-foaming deformation devices are arranged;

the device for preventing foaming deformation mainly comprises: the anti-stress baffle strip 2 comprises two foaming shunt support frames 1; the anti-stress barrier strip 2 is generally an extruded piece, and the requirement on foaming adhesion is high.

A support frame; the upper end and the lower end of the support frame 1 are both required to be attached with double-sided adhesive tapes, 3M adhesive tapes are generally selected and required to be strong in adhesion, the upper end and the lower end of the support frame 1 are respectively the bottom of the base 11 and the top of the support base 12, and therefore the 3M adhesive tapes are arranged at the bottom of the base 11 and the top of the support base 11; two sides of the support frame 1 need to be hollowed out, two sides of the support frame 1 refer to two side walls of the support frame 12, namely liquid passing grooves 14 are formed in the two side walls of the support frame 12, and the purpose is to reduce the flow resistance of foam in the foaming process; the bottom of the support frame 1, namely the bottom of the base 11, needs to be hollowed out, namely the window 13 is arranged on the base 11, so that the possibility that the bottom of the support frame 1 is mixed with air is avoided, and the expansion and contraction after the foaming door body is demoulded are eliminated, so that the door container bulges and is debonded.

It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in fig. 1 to facilitate the description of the utility model and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The device is characterized by comprising a support frame arranged in a foaming cavity and an anti-stress barrier strip arranged between the top of the support frame and the wall of the foaming cavity at intervals.

2. The device of claim 1, wherein the height of the support frame corresponding to the thickness direction of the foaming chamber is equal to half of the thickness of the foaming chamber.

3. The device for preventing foaming and deformation according to claim 1, wherein the supporting frame is a rectangular frame structure and comprises a base and a supporting seat, the base is a flat plate-shaped structure, and a window is arranged on the base; the supporting seat is of an inverted U-shaped structure and is connected to two sides of the base.

4. The device for preventing foaming and deformation according to claim 3, wherein liquid passing grooves are formed on both side walls of the supporting seat.

5. The device of claim 4, wherein the liquid passing groove penetrates along the length direction of the side wall of the seat.

6. The foaming deformation preventing device according to claim 4, wherein the number of the overflowing liquid groove is at least one.

7. The device of claim 1, wherein the anti-stress barrier strip is a flat plate structure, and a surface of the anti-stress barrier strip away from the support frame is provided with an adhesion assisting structure.

8. The device of claim 7, wherein the adhesion promoting structure is a protruding strip extending through the stress barrier strip along the length direction thereof.

9. The device of claim 8, wherein the number of ribs is at least one.

10. The device of claim 1, wherein the anti-stress barrier is made of a flexible material.

11. The device of claim 10, wherein the anti-stress barrier strip is made of ABS or HIPS.

12. The device for preventing foaming and deformation according to claim 3, wherein the bottom surface of the base is provided with a double-faced adhesive layer, and the top surface of the support seat is provided with a double-faced adhesive layer.

13. The device of claim 12, wherein the double-sided adhesive layer is made of 3M adhesive tape.

14. A door body characterized by comprising an upper foaming mold device, the anti-foaming deformation device as claimed in any one of claims 1 to 13, arranged in the upper foaming mold device, a lower foaming mold device covering the upper foaming mold device to form a foaming cavity, and a door body foaming material foamed and formed in the foaming cavity.

15. The door body according to claim 14, wherein the foaming deformation preventing means is a set of one, and is mounted on a door rail reinforcing iron in the foaming upper mold device.

16. The door body according to claim 14, wherein the number of the anti-foaming deformation devices is two or more, one of the anti-foaming deformation devices is mounted on a door rail reinforcing iron in the upper foaming mold device, and all other anti-foaming deformation devices are mounted on a door liner in the upper foaming mold device.

17. A refrigerator comprising the door body according to any one of claims 14 to 16.