CN107299496A - A kind of washing machine foreboard, processing method and washing machine - Google Patents

Abstract

The present invention relates to the technical field related to washing machines, and specifically discloses a washing machine front plate, a processing method and a washing machine. Pressing, the periphery of the annular pressing is folded back inwards to form the edge of the clothes opening. In the present invention, an outwardly protruding annular profile is added around the periphery of the garment opening, and the periphery of the annular profile is folded back inward to form the edge of the garment intake, and the annular profile is formed by plastic deformation during the stretching process. And take the edge of the clothes opening, and make the stretching direction of the ring-shaped molding and the edge of the clothes opening opposite. During the process of plastic deformation, the crystal lattice is twisted and distorted, the grains are sheared and slipped, and the grains are elongated, which increases the hardness of the metal on the surface layer of the front plate, reduces the plasticity of the metal deformation on the surface layer, and improves the The strength of the front plate.

Description

Washing machine front panel, processing method and washing machine

technical field

The invention relates to the technical field related to washing machines, in particular to a washing machine front plate, a processing method and a washing machine.

Background technique

Since the washing machine is a household appliance with moving parts, vibration will be generated during the working process so that the front plate of the washing machine bears a certain force. For the drum washing machine, in order to facilitate the picking and placing of clothes, the front plate of the washing machine is usually provided with a clothes opening for picking and placing clothes. The setting of the clothes opening will weaken the strength of the front plate of the washing machine to a certain extent. It is necessary to ensure the strength of the front plate of the washing machine to prevent the front plate of the washing machine from being broken due to vibration during the working process of the washing machine.

In the prior art, the strength of the front plate of the washing machine is usually increased by internal riveting to strengthen the iron plate, or the strength of the front plate of the washing machine is increased by increasing the thickness of the material. Adopt above-mentioned two ways, can cause the increase of washing machine production cost.

Although the above two methods for ordinary size front plates increase the production cost, they can still meet the actual strength requirements of the front plate; for large size front plates, due to higher actual strength requirements, the test proves that the above two methods are used It has been unable to meet the demand for actual strength of the front plate.

Contents of the invention

The object of the present invention is to provide a front plate of a washing machine, a processing method and the washing machine, so as to improve the strength of the front plate of the washing machine.

For reaching this purpose, the present invention adopts following technical scheme:

A front panel of a washing machine, comprising a front panel body provided with a clothes outlet,

The periphery of the clothes-taking opening has an outwardly protruding annular profile, and the periphery of the annular pressing-form is folded back inward to form the edge of the clothes-taking opening.

Further, the ring shaped profile is located on the side where the front panel body is connected to the door body of the washing machine.

Further, the edge of the clothes outlet includes a matching curved surface and a folded edge that cooperates with the door of the washing machine, and the folded edge is formed by bending the matching curved surface along its periphery close to the center of the clothes outlet to the side where the door of the washing machine is located.

Further, the slope of the radial cross-section of the ring-shaped mold passing through the center of the clothes-taking opening decreases gradually along the direction away from the main body of the front panel.

In order to achieve the above object, the present invention also provides a method for processing the front panel of a washing machine, the front panel of the washing machine includes a front panel body provided with a clothes outlet,

The periphery of the clothes-taking opening has a ring-shaped pressing formed by stretching outwards, and the ring-shaped pressing is stretched inwards to form the edge of the clothes-taking opening.

Further, at normal temperature or below the recrystallization temperature, the front panel of the washing machine is formed by stretching once.

Further, the periphery of the clothes inlet is stretched toward the side where the door of the washing machine is located to form a ring-shaped profile.

Further, the periphery of the ring-shaped profile is stretched toward the side away from the washing machine door to form a matching curved surface, and the matching curved surface is bent toward the side where the washing machine door is located along its periphery near the center of the clothes inlet to form a hem.

In order to achieve the above purpose, the present invention also provides a washing machine, including the above washing machine front panel.

A washing machine adopts the above-mentioned processing method for the front panel of the washing machine.

Beneficial effects of the present invention: In the present invention, an outwardly protruding ring-shaped profile is added around the garment opening, and the ring-shaped profile is folded back inward to form the edge of the garment intake. Plasticity occurs during the stretching process. The deformation forms the ring-shaped profiling and the edge of the clothes outlet, and makes the stretching directions of the ring-shaped profiling and the edge of the clothes outlet opposite. During the process of plastic deformation, the crystal lattice is twisted and distorted, the grains are sheared and slipped, and the grains are elongated, which increases the hardness of the metal on the surface layer of the front plate, reduces the plasticity of the metal deformation on the surface layer, and improves the The strength of the front panel.

Description of drawings

Fig. 1 is the front view of the washing machine front plate of the present invention;

Fig. 2 is the A-A direction sectional view of Fig. 1;

Fig. 3 is the axonometric view of the washing machine front panel of the present invention;

Fig. 4 is the partially enlarged schematic view of I place in Fig. 2;

Fig. 5 is the partially enlarged schematic diagram of II place in Fig. 2;

Fig. 6 is another isometric view of the front panel of the washing machine according to the present invention.

In the picture:

1. Front panel body; 11. Annular pressing; 12. Clothes opening edge; 121. Matching curved surface; 122. Hemming; 13. Clothing opening.

detailed description

The lower curved surface further illustrates the technical solution of the present invention in combination with the accompanying drawings and specific implementation methods.

As shown in Figures 1 to 6, the present embodiment provides a front panel of a washing machine, including a front panel body 1 provided with a clothes outlet 13, and the periphery of the clothes outlet 13 has a The ring-shaped die 11 that protrudes in the direction of the arrow in FIG.

In this embodiment, an outwardly protruding annular pressure profile 11 is added around the periphery of the garment opening 13, and the periphery of the annular pressure profile 11 is folded back inward to form the edge 12 of the garment intake opening, and plastic deformation occurs during the stretching process. Form the ring-shaped die 11 and the edge 12 of the clothes outlet, and make the stretching directions of the ring-shaped die 11 and the edge 12 of the clothes outlet opposite. During the process of plastic deformation, the crystal lattice is twisted and distorted, the grains are sheared and slipped, and the grains are elongated, which increases the hardness of the metal on the surface layer of the front plate, reduces the plasticity of the metal deformation on the surface layer, and improves the The strength of the front panel.

Concretely, in this embodiment, the ring-shaped profile 11 is located on the side where the front plate body 1 is connected to the door body of the washing machine, as shown in Figure 3, Figure 4 and Figure 6, the ring-shaped profile 11 passes through the clothes The slope of the curve of the radial section at the center of the opening 13 gradually decreases along the direction away from the front panel body 1, which ensures the aesthetic effect of the front panel of the washing machine and improves user satisfaction. Correspondingly, the edge 12 of the clothes-taking port is formed by stretching the ring-shaped profile 11 near the periphery of the laundry port 13 to the side away from the washing machine door body, thereby ensuring the stretching direction of the ring-shaped profile 11 and the edge 12 of the clothes-taking port Instead, to increase the strength of the front panel of the washing machine.

As shown in Figures 5 and 6, the edge 12 of the clothes outlet includes a matching curved surface 121 and a folded edge 122 matched with the door body of the washing machine, and the folded edge 122 passes through the matched curved surface 121 along its periphery close to the center of the clothes outlet 13 It is formed by bending toward the side where the washing machine door body is located. The front plate of the washing machine cooperates with the washing machine door body through the matching curved surface 121. Since the bending direction of the flange 122 is opposite to the stretching direction of the matching curved surface 121, the intensity of the front plate of the washing machine is further improved by setting the flange 122. Specifically, as shown in FIG. 5 , the edge 12 of the clothes taking port includes an arc surface connected to the annular profile 11, and a plane parallel to the front plate body 1, the plane is connected to the arc surface away from One side of the annular profile 11 cooperates with the corresponding structure on the door body of the washing machine through the arc-shaped surface and the plane.

This embodiment also provides a method for processing the front panel of a washing machine, which includes a front panel body 1 provided with a clothes outlet 13, and the periphery of the clothes outlet 13 has a ring-shaped profile 11 formed by stretching outwards. The ring shaped profile 11 is stretched inwards to form the edge 12 of the clothes opening.

In this embodiment, at room temperature or below the recrystallization temperature, the front plate of the washing machine is formed by one-time stretching, so that the raw material undergoes plastic deformation, which greatly improves the strength of the front plate, and due to the use of one-time stretching, the improved processing efficiency.

The periphery of the clothes taking port 13 is stretched toward the side where the washing machine door body is located to form a ring-shaped profile 11, and the ring-shaped profile 11 is stretched along its periphery close to the center of the clothes taking port 13 to the side away from the washing machine door body. Match the curved surface 121 so that the stretching directions of the annular profile 11 and the matched curved surface 121 are opposite.

In this embodiment, the structural strength analysis is carried out with the front plate made of SPCC (general cold-rolled carbon steel sheet and steel strip of Japanese standard), and two sizes of front plate are provided. The large size front plate is 912*701mm in size. The diameter of the clothes opening 13 is 470mm; the small size front plate has a size of 650*520mm, and the diameter of the clothes opening 13 is 300mm. The density of the front plate of the above two sizes is 7800Kg/m ³ , the Young's modulus is 206000MPa, the Poisson's ratio is 0.3, and the yield strength is 210MPa. Each front panel is connected with a corresponding door body of the washing machine.

The position C in Fig. 1 is the position where the door lock is installed. The door body of the washing machine is provided with a door buckle matched with the door lock, and the door body of the washing machine is closed by the cooperation of the door lock and the door buckle.

The first experimental condition: the door of the washing machine is opened at 90 degrees, and at the position of the door lock, that is, the position on the door of the washing machine opposite to the position C in Figure 1, a force of 150N is applied along the vertical direction (shown by the arrow in Figure 1). The load in the direction) is compared and analyzed by Ansys structural strength analysis for the above two front plates, and it can be concluded that:

Table 1 Comparison of Ansys structural strength analysis of the two front plates under the first experimental conditions

result large front panel Small size front plate Maximum stress (MPa) 211.1 222.1 Yield strength (MPa) 210 210 Safety factor 1 <1 The status of the door falling off within 1 minute Did not fall off Did not fall off

Applying a load of 150N in the vertical direction, when using the above two front plates for Ansys structural strength analysis, according to the experimental data in Table 1, it can be known that the strength of the two front plates can meet the requirement of not falling off within 1 minute, although plastic deformation will occur , but the resulting plastic deformation does not affect the normal closing of the washing machine door after the experiment. Under this experimental condition, the differences between the two front plates were not significant.

The second experimental condition: open the door of the washing machine to the maximum angle naturally, and apply a load of 150N perpendicular to the door of the washing machine at the position of the door buckle, that is, the position opposite to the position C in Figure 1 on the door of the washing machine. The Ansys structural strength analysis results of the above two front plates are compared and analyzed, and it can be concluded that:

Table 2 Ansys structural strength analysis comparison table of the two front plates under the second experimental condition

result large front panel Small size front plate Maximum stress (MPa) 244.3 314 Yield strength (MPa) 210 210 Safety factor <1 <1 The status of the door falling off within 1 minute Did not fall off Did not fall off

(1) Under the second experimental condition, both types of front panels meet the requirements of 150N pushing back for 1 minute, and the door body does not fall off;

(2) There will be local plastic deformation on the front plate, but the resulting plastic deformation does not affect the normal closing of the washing machine door after the experiment.

According to the comparative analysis under the above two experimental conditions, it can be seen that the two front panels processed by the processing method of the front panel of the washing machine described in this embodiment can meet the actual strength requirements of the front panel, and can better meet the strength of the large-size front panel Require.

This embodiment also provides a washing machine, including the above-mentioned front plate of the washing machine, and the front plate of the washing machine is processed by the above-mentioned processing method. The strength of the front plate is improved, the service life of the washing machine is prolonged, and the appearance performance of the washing machine is guaranteed at the same time.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. a kind of washing machine foreboard, including provided with the foreboard body (1) for taking clothing mouthful (13), it is characterised in that

Described to take clothing mouthful (13) periphery to have outwardly ring-type die mould (11), ring-type die mould (11) periphery is inwardly turned back Formation takes clothing mouthful edge (12).

2. washing machine foreboard according to claim 1, it is characterised in that the ring-type die mould (11) is located at foreboard body (1) side of connecting washing machine door body.

3. washing machine foreboard according to claim 2, it is characterised in that described to take clothing mouthful edge (12) to include and washing machine Cooperation curved surface (121) and flanging (122) that door body coordinates, the flanging (122) is through coordinating curved surface (121) along it close to taking clothing mouthful (13) periphery at center is formed to side bending where washing machine door body.

4. washing machine foreboard according to claim 3, it is characterised in that the ring-type die mould (11), which is crossed, to be taken in clothing mouthful (13) The slope of curve of the radial section of the heart is gradually reduced along the direction away from foreboard body (1).

5. a kind of processing method of washing machine foreboard, the washing machine foreboard is included provided with the foreboard body for taking clothing mouthful, its feature It is,

It is described to take clothing mouthful periphery inwardly to stretch formation with the ring-type die mould to be formed, the ring-type die mould is stretched out and take clothing mouthful side Edge.

6. the processing method of washing machine foreboard according to claim 5, it is characterised in that normal temperature or recrystallization temperature with Under, it is molded to form washing machine foreboard by one-off drawing.

7. the processing method of washing machine foreboard according to claim 6, it is characterised in that described to take clothing mouthful periphery to laundry Side stretching formation ring-type die mould where gate body.

8. the processing method of washing machine foreboard according to claim 7, it is characterised in that the ring-type die mould periphery is to remote Side stretching formation from washing machine door body coordinates curved surface, the cooperation curved surface along its close to Qu Yikou centers periphery to laundry Side bending forms flanging where gate body.

9. a kind of washing machine, it is characterised in that including any described washing machine foreboard of Claims 1-4.

10. a kind of washing machine, it is characterised in that using the processing method of any described washing machine foreboard of claim 5 to 8.