Microwave oven shell CNC metal plate forming process method and microwave oven shell

Abstract

The invention provides a microwave oven shell CNC metal plate forming process method. The microwave oven shell CNC metal plate forming process method comprises the following steps that S1, feeding is conducted; step S2, performing compression molding; step S3, punching is carried out; step S4, bending is carried out; s5, hole flanging; according to the manufacturing method, the integrated microwave oven shell can be directly manufactured from the plate, the production takt is reduced, the production efficiency is improved, the overall structural strength of the microwave oven shell can be improved, the problems of deformation, cracking and the like are effectively avoided, the quality of a microwave oven is improved, and the service life of the microwave oven is prolonged; the invention further provides the microwave oven shell which is high in structural strength, capable of effectively resisting impact and long in service life.

Description

Technical Field

[0001] The invention belongs to the field of sheet metal forming technology, and in particular relates to a CNC sheet metal forming technology method for a microwave oven shell and the microwave oven shell. Background Art

[0002] The microwave oven shell is an important part of the microwave oven. The microwave oven shell can provide structural support, ensure the stable position of each internal component, protect the internal components, protect the circuits, magnetron and other electronic components inside the microwave oven, and effectively prevent dust, moisture and external impact from causing damage to the microwave oven. The microwave oven shell is usually made of metal materials, which can effectively shield microwave radiation and reduce damage to the human body during use. At the same time, the microwave oven shell is usually designed with heat dissipation structures such as heat dissipation holes to help the microwave oven effectively dissipate heat when working and prevent dangerous situations such as overheating.

[0003] The microwave oven shell in the prior art is usually made of spliced ​​plates, which are connected by screws. The spliced ​​microwave oven shell has gaps at the joints, which increases the risk of microwave leakage and affects safety. The spliced ​​microwave oven shell is not strong enough and is easily deformed by external impact. The joints and deformed parts are prone to metal fatigue problems due to thermal expansion during long-term use, resulting in shell cracking and inability to continue to use. The spliced ​​shell has a high production cycle and low production efficiency during the manufacturing process, which increases production costs.

[0004] Therefore, there is an urgent need to develop a CNC sheet metal forming process for a microwave oven shell that can reduce the production cycle, improve production efficiency, directly process the microwave oven shell through the plate, and avoid various problems caused by splicing the microwave oven shell. Summary of the invention

[0005] The present invention is made to solve the above problems, and aims to provide a microwave oven shell CNC sheet metal forming process method and microwave oven shell which can reduce the production cycle, improve production efficiency, directly process the microwave oven shell through the plate, and avoid various problems caused by splicing the microwave oven shell. In order to achieve the above purposes, the technical solution adopted by the present invention is:

[0006] The invention provides a CNC sheet metal forming process method for a microwave oven shell, which has the following characteristics and comprises the following steps: step S1, feeding; step S2, pressing; step S3, punching; step S4, bending; S5, punching; and step S6, U-shaped bending.

[0007] The CNC sheet metal forming process method for a microwave oven shell provided by the present invention may also have the following feature: in step S2, the sheet metal is conveyed to a press by a feeder to perform stamping forming of step grooves on both sides of the sheet metal.

[0008] In the CNC sheet metal forming process method for the microwave oven shell provided by the present invention, it can also have such a feature that step S3 includes the following sub-steps: step S3-1, edge punching of the long side and the short side of one side of the plate; step S3-2, rotating the plate; step S3-3, edge punching of the other long side and the other short side of the plate.

[0009] In the CNC sheet metal forming process method for the microwave oven shell provided by the present invention, it can also have such a feature that in step S3-1, after the edge of the plate is punched, a first bending edge, a second bending edge and a third bending edge are formed on the long side of one side, and a first flange is formed on the short side of one side; in step S3-3, after the plate after the rotation position is punched, a fourth bending edge, a fifth bending edge and a sixth bending edge are formed on the long side of the other side, and a second flange is formed on the short side of the other side.

[0010] In the CNC sheet metal forming process method for the microwave oven shell provided by the present invention, it can also have the following characteristics: a first bending notch is provided between the first bending edge and the second bending edge, a second bending notch is provided between the second bending edge and the third bending edge; a third bending notch is provided between the fourth bending edge and the fifth bending edge, and a fourth bending notch is provided between the fifth bending edge and the sixth bending edge.

[0011] The CNC sheet metal forming process method for a microwave oven shell provided by the present invention may also have the following characteristics: the first bending notch and the second bending notch are rectangular, and the third bending notch and the fourth bending notch are fan-shaped.

[0012] In the CNC sheet metal forming process method for the microwave oven shell provided by the present invention, it can also have such a feature, in step S4, it includes the following steps: step S4-1, bending and flanging the first bending edge, the second bending edge and the third bending edge of the long side of one side of the plate; step S4-2, bending and flanging the fourth bending edge, the fifth bending edge and the sixth bending edge of the long side of the other side of the plate; step S4-3, bending and flanging the first flange and the second flange of the short sides of the plate.

[0013] The CNC sheet metal forming process method for a microwave oven shell provided by the present invention may also have the following feature: in step S5, a hole is punched in the step groove on one side of the plate.

[0014] In the CNC sheet metal forming process method for the microwave oven shell provided by the present invention, it can also have such a feature that in step S6, it includes the following two steps: step S6-1, bending along the center of the first bending notch and the center of the third bending notch; step S6-2, bending along the center of the second bending notch and the center of the fourth bending notch.

[0015] The present invention also provides a microwave oven shell, which is manufactured by the above-mentioned CNC sheet metal forming process method for the microwave oven shell, and has the following characteristics: it includes a back panel, a first side panel and a second side panel, the first side panel and the second side panel are respectively arranged on both sides of the back panel, the first side panel and the second side panel are both provided with step grooves, and the step groove of the second side panel is provided with heat dissipation holes, the edges of the back panel, the first side panel and the second side panel are all flanging processed, and the back panel, the first side panel and the second side panel are integrally formed.

[0016] The technical effect of the present invention is as follows: the CNC sheet metal forming process method for a microwave oven shell provided by the present invention comprises the following steps: step S1, loading; step S2, pressing; step S3, punching; step S4, bending; S5, punching; step S6, U-shaped bending, and can directly process a sheet material to obtain an integrated microwave oven shell, which is beneficial to reducing the production cycle and improving production efficiency, and can improve the overall structural strength of the microwave oven shell, effectively avoiding deformation and cracking, and improving the quality and service life of the microwave oven. The present invention also provides a microwave oven shell with high structural strength, the ability to effectively resist impact, and a long service life.

[0017] Therefore, the CNC sheet metal forming process method for a microwave oven shell provided by the present invention can reduce the production cycle, improve production efficiency, can directly process the microwave oven shell by processing the plate, can avoid various problems caused by splicing the microwave oven shell, and also provides a microwave oven shell with high structural strength, capable of effectively resisting impact and having a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] This specification includes the following drawings, which show the following contents:

[0019] Figure 1 It is a flow chart of a CNC sheet metal forming process method for a microwave oven housing in an embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of a sheet material after pressing in a CNC sheet metal forming process method for a microwave oven housing in an embodiment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of a plate after punching in a CNC sheet metal forming process for a microwave oven housing according to an embodiment of the present invention;

[0022] Figure 4It is a schematic structural diagram of a plate after bending in a CNC sheet metal forming process method for a microwave oven housing in an embodiment of the present invention;

[0023] Figure 5 It is a schematic structural diagram of a plate after punching in a CNC sheet metal forming process for a microwave oven housing in an embodiment of the present invention;

[0024] Figure 6 It is a schematic structural diagram of a plate after U-bending in a CNC sheet metal forming process for a microwave oven housing in an embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of the structure of a microwave oven housing in a top view direction according to an embodiment of the present invention;

[0026] Figure 8 is a schematic structural diagram of a first side plate in an embodiment of the present invention;

[0027] Fig. 9 Schematic diagram of the structure of the second side plate in an embodiment of the present invention.

[0028] Marked in the figure: 1-plate, 2-step groove, 3-first bending edge, 4-second bending edge, 5-third bending edge, 6-first flange, 7-fourth bending edge, 8-fifth bending edge, 9-sixth bending edge, 10-second flange, 11-first bending notch, 12-second bending notch, 13-third bending notch, 14-fourth bending notch, 15-heat dissipation hole, 100-back panel, 200-first side panel, 300-second side panel. DETAILED DESCRIPTION

[0029] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0030] Figure 1 It is a flow chart of a CNC sheet metal forming process method for a microwave oven housing in an embodiment of the present invention.

[0031] like Figure 1 As shown, the CNC sheet metal forming process method for a microwave oven shell provided by the present invention comprises the following steps: step S1, loading; step S2, pressing; step S3, punching; step S4, bending; S5, punching; step S6, U-shaped bending. The CNC sheet metal forming process method for a microwave oven shell provided by the present invention can directly process a sheet material to obtain an integrated microwave oven shell, which is beneficial to reducing the production cycle and improving production efficiency, can improve the overall structural strength of the microwave oven shell, effectively avoid deformation and cracking, and improve the quality and service life of the microwave oven.

[0032] Figure 2 It is a schematic structural diagram of a sheet material after pressing in a CNC sheet metal forming process for a microwave oven housing in an embodiment of the present invention.

[0033] like Figure 2 As shown, in step S2, the plate 1 is conveyed into the press by the feeder, and the step grooves 2 on both sides of the plate 1 are punched and formed. The step grooves 2 are punched and formed on both sides of the rectangular plate 1.

[0034] Figure 3 It is a schematic structural diagram of a plate after punching in a CNC sheet metal forming process for a microwave oven housing in an embodiment of the present invention.

[0035] like Figure 3 As shown, in step S3, the following sub-steps are included:

[0036] Step S3-1, punching one long side and one short side of the plate 1. After punching the edge of the plate 1, a first bending edge 3, a second bending edge 4 and a third bending edge 5 are formed on one long side of the plate 1, and a first flange 6 is formed on one short side of the plate 1;

[0037] Step S3-2, rotating the plate 1 by 180°, so as to facilitate punching of the other long side and the other short side of the plate 1.

[0038] Step S3-3, edge punching is performed on the other long side and the other short side of the plate 1. After punching of the plate after the rotation position, the fourth bending edge 7, the fifth bending edge 8 and the sixth bending edge 9 are formed on the other long side of the plate 1, and the second flange 10 is formed on the other short side.

[0039] Among them, a first bending notch 11 is provided between the first bending edge 3 and the second bending edge 4, and a second bending notch 12 is provided between the second bending edge 4 and the third bending edge 5; a third bending notch 13 is provided between the fourth bending edge 7 and the fifth bending edge 8, and a fourth bending notch 14 is provided between the fifth bending edge 8 and the sixth bending edge 9. The first bending edge 3, the second bending edge 4, the third bending edge 5, the fourth bending edge 7, the fifth bending edge 8 and the sixth bending edge 9 are all bent and flanged inwardly of the plate 1. The first bending notch 11, the second bending notch 12, the third bending notch 13 and the fourth bending notch 14 facilitate U-shaped bending of the plate 1 and avoid deformation of the plate 1 at the U-shaped bending portion, thereby improving the structural strength of the plate 1 after bending and facilitating the plate 1 to be enclosed into a microwave oven shell.

[0040] The first bending notch and the second bending notch are rectangular, and the long sides of the first bending notch and the second bending notch are at the bottom of the microwave oven shell. The third bending notch and the fourth bending notch are fan-shaped, and the long sides of the third bending notch and the fourth bending notch are at the top of the microwave oven shell.

[0041] Figure 4 It is a schematic structural diagram of a plate after bending in a CNC sheet metal forming process method for a microwave oven housing in an embodiment of the present invention.

[0042] like Figure 4 As shown, in step S4, the following steps are included:

[0043] Step S4-1, bending and flanging the first bending edge 3, the second bending edge 4 and the third bending edge 5 of the long side of the plate;

[0044] Step S4-2, bending and flanging the fourth bending edge 7, the fifth bending edge 8 and the sixth bending edge 9 of the other long side of the plate;

[0045] Step S4-3, bending and flanging the first flange and the second flange of the short edges on both sides of the plate.

[0046] Finally, the plate 1 becomes Figure 3 In the structure shown, the first bending edge 3, the second bending edge 4, the third bending edge 5, the first flange 6, the fourth bending edge 7, the fifth bending edge 8, the sixth bending edge 9 and the second flange 10 are flanged and bent, all facing the inside of the plate 1. After the U-shaped bending, the bent edges can improve the sealing of the joints and can facilitate the connection to the microwave oven shell, thereby improving the quality and structural strength of the microwave oven shell.

[0047] Figure 5 It is a schematic structural diagram of a plate after punching in a CNC sheet metal forming process for a microwave oven housing in an embodiment of the present invention.

[0048] like Figure 5 As shown, in step S5, a hole is made inside the step groove 2 on one side of the plate 1 to form a heat dissipation hole 15.

[0049] Figure 6 It is a schematic structural diagram of a plate after U-bending in a CNC sheet metal forming process for a microwave oven housing in an embodiment of the present invention;

[0050] like Figure 6 As shown, in step S6, the following two steps are included:

[0051] Step S6-1, bending along the center of the first bending notch and the center of the third bending notch;

[0052] Step S6-2, bending along the center of the second bending notch and the center of the fourth bending notch.

[0053] Through step S6-1 and step S6-2, the plate 1 is bent into a U shape to obtain the final microwave oven shell, so that the CNC sheet metal forming process method for the microwave oven shell provided by the present invention can directly process the plate into an integrated microwave oven shell, which is beneficial to reducing the production cycle and improving production efficiency. It can improve the overall structural strength of the microwave oven shell, effectively avoid deformation and cracking, and improve the quality and service life of the microwave oven.

[0054] Figure 7 is a schematic diagram of the structure of a microwave oven housing in a top view direction according to an embodiment of the present invention; Figure 8 is a schematic structural diagram of a first side plate in an embodiment of the present invention; Fig. 9 Schematic diagram of the structure of the second side plate in an embodiment of the present invention.

[0055] like Figure 7 , Figure 8 as well as Fig. 9 As shown, a microwave oven shell manufactured by the CNC sheet metal forming process method for a microwave oven shell provided by the present invention comprises a back panel 100, a first side panel 200 and a second side panel 300, wherein the first side panel 200 and the second side panel 300 are respectively arranged on both sides of the back panel 100, and the first side panel 200 and the second side panel 300 are both provided with a step groove 2, and a heat dissipation hole 15 is provided in the step groove 2 of the second side panel 300, and the edges of the back panel 100, the first side panel 200 and the second side panel 300 are all subjected to flanging treatment, and the flanging treatment of the edges can improve the sealing of the connection, and can facilitate the connection with the microwave oven shell, thereby improving the quality and structural strength of the microwave oven shell.

[0056] The back plate 100, the first side plate 200 and the second side plate 300 are directly integrally formed from the plate 1. The microwave oven shell provided by the present invention has no seams, thereby avoiding the risk of microwave leakage, having high safety, improving the overall strength of the microwave oven shell, avoiding the possibility of deformation of the microwave oven shell, and avoiding the problem of metal fatigue due to thermal expansion of the microwave oven shell during long-term use. The CNC sheet metal forming process method for the microwave oven shell provided by the present invention is conducive to reducing the production cycle, improving production efficiency, and can improve the overall structural strength of the microwave oven shell, effectively avoiding problems such as deformation and cracking, and improving the quality and service life of the microwave oven.

[0057] Functions and Effects of the Embodiments

[0058] The CNC sheet metal forming process method for a microwave oven shell provided by the present invention comprises the following steps: step S1, loading; step S2, pressing; step S3, punching; step S4, bending; S5, punching holes; and step S6, U-shaped bending. An integrated microwave oven shell can be directly processed from a sheet material, which is beneficial to reducing the production cycle and improving production efficiency. The overall structural strength of the microwave oven shell can be improved, and problems such as deformation and cracking can be effectively avoided, thereby improving the quality and service life of the microwave oven. The present invention also provides a microwave oven shell with high structural strength, the ability to effectively resist impact, and a long service life.

[0059] Therefore, the CNC sheet metal forming process method for a microwave oven shell provided by the present invention can reduce the production cycle, improve production efficiency, can directly process the microwave oven shell by processing the plate, can avoid various problems caused by splicing the microwave oven shell, and also provides a microwave oven shell with high structural strength, capable of effectively resisting impact and having a long service life.

[0060] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A CNC sheet metal forming process for a microwave oven housing, characterized in that: The following steps are involved: Step S1, loading; Step S2, pressing; Step S3, punching; Step S4, bending; S5, punching; Step S6, U-shaped bending.

2. The CNC sheet metal forming process for a microwave oven housing according to claim 1, characterized in that: Step S2, the plate is transported to a press by a feeder, and step grooves on both sides of the plate are punched and formed.

3. The CNC sheet metal forming process for a microwave oven housing according to claim 2, characterized in that: Step S3 includes the following sub-steps: step S3-1, edge punching of one long side and one short side of the plate; step S3-2, rotating the plate; step S3-3, edge punching of the other long side and the other short side of the plate.

4. The CNC sheet metal forming process for a microwave oven housing according to claim 3, characterized in that: In step S3-1, after the edge of the plate is punched, a first bending edge, a second bending edge and a third bending edge are formed on one long side, and a first flange is formed on one short side; in step S3-3, after the plate is punched after the rotation position, a fourth bending edge, a fifth bending edge and a sixth bending edge are formed on the other long side, and a second flange is formed on the other short side.

5. The CNC sheet metal forming process for a microwave oven housing according to claim 4, characterized in that: A first bending notch is provided between the first bending edge and the second bending edge, a second bending notch is provided between the second bending edge and the third bending edge; a third bending notch is provided between the fourth bending edge and the fifth bending edge, and a fourth bending notch is provided between the fifth bending edge and the sixth bending edge.

6. The CNC sheet metal forming process for a microwave oven housing according to claim 5, characterized in that: The first bending notch and the second bending notch are rectangular, and the third bending notch and the fourth bending notch are fan-shaped.

7. The CNC sheet metal forming process for a microwave oven housing according to claim 6, characterized in that: The step S4 includes the following steps: step S4-1, bending and flanging the first bending edge, the second bending edge and the third bending edge of the long side of one side of the plate; step S4-2, bending and flanging the fourth bending edge, the fifth bending edge and the sixth bending edge of the long side of the other side of the plate; step S4-3, bending and flanging the first flange and the second flange of the short sides of the plate.

8. The CNC sheet metal forming process for a microwave oven housing according to claim 7, characterized in that: In step S5, a hole is formed in the step groove on one side of the plate.

9. The CNC sheet metal forming process for a microwave oven housing according to claim 1, characterized in that: In step S6, the following two steps are included: step S6-1, bending along the center of the first bending notch and the center of the third bending notch; step S6-2, bending along the center of the second bending notch and the center of the fourth bending notch.

10. A microwave oven shell, manufactured by the CNC sheet metal forming process for a microwave oven shell according to any one of claims 1 to 9, characterized in that: It includes a back panel, a first side panel and a second side panel, the first side panel and the second side panel are respectively arranged on both sides of the back panel, the first side panel and the second side panel are both provided with step grooves, the step groove of the second side panel is provided with heat dissipation holes, the edges of the back panel, the first side panel and the second side panel are all flanging processed, and the back panel, the first side panel and the second side panel are integrally formed.

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