阅读说明：本技术 一种冰箱门壳及其成型工艺 (Refrigerator door shell and forming process thereof ) 是由 陆涛 蔡训儒 程春明 于 2020-11-27 设计创作，主要内容包括：本发明公开了一种冰箱门壳及其成型工艺,涉及冰箱技术领域。本发明包括门壳基板；门壳基板的上下两端均具有一第一折弯结构；第一折弯结构为一次折弯成型；第一折弯结构的折弯处弯角半径小于4mm；门壳基板的左右两侧均具有一第二折弯结构；第二折弯结构呈L型结构；第二折弯结构经两次折弯成型；第二折弯结构的折弯处弯角半径不小于0.5mm且不大于4mm。本发明所制的冰箱门壳,能够有效解决现有门壳成型过程中遇到的物料堆积、变形、起皱和掉漆等问题,也为平面门壳的大范围推广提供了技术支撑,具有较高的市场应用价值。(The invention discloses a refrigerator door shell and a forming process thereof, and relates to the technical field of refrigerators. The invention includes a door shell substrate; the upper end and the lower end of the door shell substrate are respectively provided with a first bending structure; the first bending structure is formed by one-time bending; the bend radius of the bend part of the first bending structure is less than 4 mm; the left side and the right side of the door shell substrate are respectively provided with a second bending structure; the second bending structure is of an L-shaped structure; the second bending structure is formed by bending twice; the bending radius of the bending part of the second bending structure is not less than 0.5mm and not more than 4 mm. The refrigerator door shell manufactured by the invention can effectively solve the problems of material accumulation, deformation, wrinkling, paint falling and the like in the existing door shell forming process, also provides technical support for large-scale popularization of a plane door shell, and has higher market application value.)

1. A refrigerator door shell, characterized by comprising a door shell base plate (1);

the upper end and the lower end of the door shell substrate (1) are respectively provided with a first bending structure (2); the first bending structure (2) is formed by one-time bending; the bending radius of the bending part of the first bending structure (2) is less than 4 mm;

the left side and the right side of the door shell substrate (1) are respectively provided with a second bending structure (3); the second bending structure (3) is of an L-shaped structure; the second bending structure (3) is formed by bending twice; the bending radius of the bending part of the second bending structure (3) is not less than 0.5mm and not more than 4 mm.

2. A refrigerator door shell according to claim 1, characterized in that said first bending structure (2) has a bending cut at each of its opposite ends; the bending notch is provided with a process corner in a U-shaped structure.

3. The refrigerator door shell according to claim 1, wherein the opposite ends of the second bending structure (3) each have a bevel notch and a relief notch in the shape of a circular arc.

4. The refrigerator door case and the molding process thereof according to claim 1, wherein the door case base plate (1) employs one of a VCM plate, a PCM plate, a PET plate, and a stainless steel plate.

5. A forming process of a refrigerator door shell is characterized by comprising the following steps:

firstly, punching and blanking a plate to obtain a door shell plate with a required external dimension;

step two, simultaneously stamping and bending the periphery of the door shell plate to form primary bending of the upper end, the lower end, the left end and the right end of the door shell plate;

thirdly, punching the plate materials at the bending notches at the upper end and the lower end of the door shell plate material to form a U-shaped notch, and obtaining a first bending structure (2) of the door shell plate material;

step four, performing secondary bending on the primary bending edges at the left end and the right end of the door shell plate to obtain a second bending structure (3) of the door shell plate; and finally, manufacturing the required refrigerator door shell.

Technical Field

The invention belongs to the technical field of refrigerators, and particularly relates to a refrigerator door shell and a forming process thereof.

Background

Among the existing refrigerators, the refrigerator with the color plate door is an indispensable refrigerator for the current market sale; however, in the process of producing and forming the color plate door shell, the door shell is often left-right symmetrical, and the problems that the number of dies is large and the color plate door shell cannot be used universally exist; meanwhile, in the door shell forming process, the traditional door shell bending forming process is to bend the side edge with the bending height of about 3mm at the end part of the door shell to form a U-shaped bend; at the intersection of the U-shaped bend and the side edge with the thickness of 3mm, the short edge of the side surface is in a compressed state, more material is produced by compression, and the more material flows in a direction which is favorable for the flow of the material, so that the side surface is extruded to form small wrinkles, and the phenomena of material accumulation, deformation, wrinkling, paint falling and the like directly influence the appearance of the refrigerator, and therefore, the fillet of the U-shaped bend is difficult to be made small; the plane door shell is matched with the small R angle, so that people can have a hard feeling, and the large R angle often has a feeling of incompleteness and heaviness, so that the development of the plane door shell is limited. Therefore, it is desired to develop a refrigerator door case and a molding process thereof so as to solve the above problems.

Disclosure of Invention

The invention provides a refrigerator door shell and a forming process thereof, and aims to solve the problems in the background technology.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a refrigerator door shell, which comprises a door shell base plate with a planar structure; the upper end and the lower end of the door shell substrate are respectively provided with a first bending structure; the first bending structure is formed by one-time bending; the bend radius of the bent part of the first bending structure is less than 4 mm; the left side and the right side of the door shell substrate are respectively provided with a second bending structure; the second bending structure is of an L-shaped structure; the second bending structure is formed by bending twice; the bending radius of the bending part of the second bending structure is not less than 0.5mm and not more than 4 mm.

Further, two opposite ends of the first bending structure are provided with a bending notch; the bending notch is provided with a process corner in a U-shaped structure.

Furthermore, the opposite two end parts of the second bending structure are provided with an inclined plane notch and a circular arc abdicating notch.

Further, the door case substrate adopts one of a VCM board, a PCM board, a PET board, and a stainless steel board.

A molding process of a refrigerator door shell comprises the following steps:

firstly, punching and blanking a plate to obtain a door shell plate with a required external dimension;

step two, simultaneously stamping and bending the periphery of the door shell plate to form primary bending of the upper end, the lower end, the left end and the right end of the door shell plate;

punching the plate materials at the bending notches at the upper end and the lower end of the door shell plate material to form a U-shaped notch, and obtaining a first bending structure of the door shell plate material;

step four, performing secondary bending on the primary bending edges at the left end and the right end of the door shell plate to obtain a second bending structure of the door shell plate; and finally, manufacturing the required refrigerator door shell.

The invention has the following beneficial effects:

the refrigerator door shell manufactured by the invention can effectively solve the problems of material accumulation, deformation, wrinkling, paint falling and the like in the existing door shell forming process, also provides technical support for large-scale popularization of a plane door shell, also can greatly reduce the cost of a mould, and has higher market application value.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

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

FIG. 1 is a schematic structural view of a refrigerator door according to the present invention;

fig. 2 is a top view of the structure of fig. 1.

In the drawings, the components represented by the respective reference numerals are listed below:

1-a door shell substrate, 2-a first bending structure and 3-a second bending structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention is a refrigerator door, including a door base plate 1; the upper end and the lower end of the door shell substrate 1 are respectively provided with a first bending structure 2; the first bending structure 2 is formed by one-time bending; the bend radius of the bent part of the first bending structure 2 is less than 4 mm; the left side and the right side of the door shell base plate 1 are respectively provided with a second bending structure 3; the second bending structure 3 is in an L-shaped structure; the second bending structure 3 is formed by bending twice; the bending radius of the bending part of the second bending structure 3 is not less than 0.5mm and not more than 4 mm.

Wherein, the two opposite ends of the first bending structure 2 are provided with a bending notch; the bending cut is provided with a process angle in a U-shaped structure.

Wherein, the opposite two ends of the second bending structure 3 are both provided with an inclined plane gap and a circular arc abdicating notch.

Wherein, the door case base plate 1 adopts one of VCM board, PCM board, PET board and stainless steel board.

A forming process of a refrigerator door shell is characterized by comprising the following steps:

firstly, punching and blanking a plate to obtain a door shell plate with a required external dimension;

step two, simultaneously stamping and bending the periphery of the door shell plate to form primary bending of the upper end, the lower end, the left end and the right end of the door shell plate;

thirdly, punching the plate materials at the bending notches at the upper end and the lower end of the door shell plate material to form a U-shaped notch, and obtaining a first bending structure 2 of the door shell plate material;

step four, performing secondary bending on the primary bending edges at the left end and the right end of the door shell plate to obtain a second bending structure 3 of the door shell plate; and finally, manufacturing the required refrigerator door shell.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.