Freezer shell CNC forming process method and freezer shell

Abstract

The invention provides a CNC forming process method for a refrigerator shell. The CNC forming process method comprises the following steps that S1, a plate is punched and cut; s2, coaming forming machining is carried out; s3, forming and processing the back plate; s4, door shell forming machining is carried out; s5, forming and processing the inner container; and S6, the inner container is assembled. One plate is divided into a plurality of plates, the utilization rate of the plates is improved, the surrounding plate, the back plate and the door shell are integrally formed in a punching and bending mode, connecting gaps caused by splicing are reduced, the connecting procedure is omitted, the production takt is reduced, and the production efficiency is improved. The CNC forming process method for the refrigerator shell is low in production takt, high in production efficiency, capable of effectively utilizing plates and reducing the production cost, and meanwhile the refrigerator shell which is good in sealing performance, good in heat preservation performance and capable of reducing the energy loss of the refrigerator is provided. The CNC forming process method for the refrigerator shell is low in production takt, high in production efficiency, capable of effectively utilizing the plates and capable of reducing the energy loss of the refrigerator.

Description

Technical Field

[0001] The invention belongs to the field of refrigerator shell processing, and in particular relates to a refrigerator shell CNC forming process method and a refrigerator shell. Background Art

[0002] The freezer shell is the external structure of the freezer, usually made of metal materials (such as steel plates or aluminum alloys). The freezer shell can protect the refrigeration system, cold storage room and other electronic components inside the freezer from physical damage and the influence of the external environment. The inner liner and outer shell of the freezer shell are usually filled with insulation materials (such as polyurethane foam) to reduce heat conduction, maintain the internal temperature stable, and improve energy efficiency.

[0003] The existing refrigerator shell is usually made of multiple plates spliced ​​together, and the joints are connected by welding or riveting, resulting in poor sealing and serious internal water seepage problems. After long-term use, the refrigerator shell is prone to rust, affecting the thermal insulation performance, and thermal bridges may form at the splicing joints, resulting in energy loss and affecting the overall energy efficiency of the refrigerator. At the same time, the overall production cycle of the spliced ​​refrigerator shell is high and the production efficiency is low. The splicing of multiple plates leads to an increase in scraps and increased production costs.

[0004] Therefore, we continue to develop a CNC forming process method for a refrigerator shell with low production cycle, high production efficiency, effective use of sheet materials, and reduced production costs, while providing a refrigerator shell with good sealing performance, good thermal insulation performance, and reduced refrigerator energy loss. Summary of the invention

[0005] The present invention is made to solve the above problems, and aims to provide a CNC forming process method for a refrigerator shell with low production cycle, high production efficiency, effective use of plate materials, and reduced production costs, and at the same time provide a refrigerator shell with good sealing performance, good thermal insulation performance, and reduced energy loss of the refrigerator. In order to achieve the above purposes, the technical solution adopted by the present invention is:

[0006] The present invention provides a CNC forming process method for a refrigerator shell, which has the following characteristics and comprises the following steps: step S1, plate punching and splitting; step S2, enclosure forming processing; step S3, back plate forming processing; step S4, door shell forming processing; step S5, liner forming processing; step S6, liner assembling.

[0007] The CNC forming process method for the refrigerator shell provided by the present invention may also have such a feature that in step S1, the sheet material is punched and divided into a surround sheet material, a back sheet material, a door shell sheet material and an inner liner sheet material.

[0008] The CNC forming process method for the refrigerator shell provided by the present invention may also have such a feature that, in step S2, the following sub-steps are included: step S2-1, punching holes in the enclosure plate; step S2-2, punching the edge of the enclosure plate to form a bending edge of the enclosure plate; step S2-3, bending and flanging the edge of the enclosure plate; step S2-4, U-bending the enclosure plate.

[0009] The CNC forming process method for the refrigerator shell provided by the present invention may also have the following feature: in step S3, the edge of the back plate is bent and flanging.

[0010] The CNC forming process method for the refrigerator shell provided by the present invention may also have such a feature that in step S4, the two side edges of the door shell plate are bent and flanging twice.

[0011] The CNC forming process method for the refrigerator shell provided by the present invention may also have such a feature that step S5 includes the following sub-steps: step S5-1, dividing the inner liner sheet into a bottom plate, a large U plate and a small U plate; step S5-2, bending the bottom plate; step S5-3, bending the large U plate; step S5-4, bending the small U plate.

[0012] The CNC forming process method for the refrigerator shell provided by the present invention may also have the following features: in step S5-2, the bottom plate is subjected to four-corner hemming, a first bending and a second bending in sequence to bend the bottom plate into a "Z" shape; in step S5-3, the large U plate is subjected to two bending processes to bend the large U plate into a "U" shape; in step S5-4, the small U plate is subjected to two bending processes to bend the small U plate into a "U" shape.

[0013] The present invention also provides a refrigerator shell, which is manufactured by the above-mentioned refrigerator shell CNC forming process method and has the following characteristics: it includes a surround, a back plate, a door shell and an inner liner, wherein both sides of the back plate are connected to the surround, the door shell is arranged on the surround, and the inner liner is arranged in the surround.

[0014] The refrigerator shell provided by the present invention may also have such a feature that the inner tank includes a bottom plate, a large U plate and a small U plate, the bottom plate includes a first horizontal plate, a first vertical plate and a second horizontal plate, one side of the first vertical plate is connected to the first horizontal plate, the other side of the first vertical plate is connected to the second horizontal plate, the bottom of the large U plate is connected to the first horizontal plate, the side edge of the large U plate is connected to the first vertical plate, the bottom of the small U plate is connected to the second horizontal plate, and the side edge of the small U plate is connected to the side edge of the large U plate.

[0015] The technical effect of the present invention is as follows: the CNC forming process method for a refrigerator shell provided by the present invention comprises the following steps: step S1, punching and dividing of a plate; step S2, forming and processing of a surrounding plate; step S3, forming and processing of a back plate; step S4, forming and processing of a door shell; step S5, forming and processing of an inner liner; step S6, assembling of an inner liner, by dividing a piece of plate into multiple pieces of plate, the utilization rate of the plate is improved, the surrounding plate, the back plate and the door shell are all integrally formed by punching and bending, reducing the connection gap caused by splicing, eliminating the connection process, which is beneficial to reducing the production cycle and improving the production efficiency. The present invention also provides a refrigerator shell with good sealing performance, good thermal insulation performance and reduced energy loss of the refrigerator.

[0016] Therefore, the CNC forming process method for the refrigerator shell provided by the present invention has a low production cycle, high production efficiency, effective use of plate materials, and reduced production costs, while providing a refrigerator shell with good sealing performance, good thermal insulation performance, and reduced refrigerator energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This specification includes the following drawings, which show the following contents:

[0018] Figure 1 is a flow chart of a CNC forming process method for a refrigerator shell in an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the structure after the edge of the enclosure plate is punched in an embodiment of the present invention;

[0020] Figure 3 2 is a schematic diagram of the structure of the enclosure plate after bending and flanging in an embodiment of the present invention;

[0021] Figure 4 2 is a schematic diagram of the structure of the enclosure plate after U-bending in an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the structure of the back plate after bending and flanging in an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of the structure of the door shell plate after bending and flanging in an embodiment of the present invention;

[0024] Figure 7 2 is a schematic diagram of the structure of the bottom plate after the four corners are hemmed in an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of the structure of the bottom plate after being bent twice in an embodiment of the present invention;

[0026] Fig. 9 This is a schematic diagram of the structure of a large U-shaped plate after bending in an embodiment of the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the small U-shaped plate after bending in an embodiment of the present invention.

[0028] Marked in the figure: 100-enclosure plate, 101-mounting hole, 102-first bending edge, 103-second bending edge, 104-third bending edge, 105-fourth bending plate, 106-fifth bending edge, 107-sixth bending edge, 108-seventh bending edge, 109-eighth bending edge, 110-ninth bending edge, 111-tenth bending edge, 112-first edging, 113-second edging, 200-back plate, 300-door shell plate, 400-liner plate, 410-bottom plate, 411-first bottom plate bending notch, 412-second bottom plate bending notch, 413-first horizontal plate, 414-first vertical plate, 415-second horizontal plate, 420-large U plate, 430-small U plate. 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 the CNC forming process method of the refrigerator shell in an embodiment of the present invention.

[0031] like Figure 1 As shown, the CNC forming process method for the refrigerator shell provided by the present invention comprises the following steps: step S1, plate punching and segmentation; step S2, enclosure forming processing; step S3, back plate forming processing; step S4, door shell forming processing; step S5, liner forming processing; step S6, liner assembly. The CNC forming process method for the refrigerator shell provided by the present invention improves the utilization rate of the plate by dividing a plate into multiple plates. The enclosure, back plate and door shell are all integrally formed by punching and bending, which reduces the connection gap caused by splicing, omits the connection process, is conducive to reducing the production cycle and improving production efficiency. The present invention also provides a refrigerator shell with good sealing performance, good thermal insulation performance and reduced energy loss of the refrigerator.

[0032] In step S1 , the whole plate is punched and divided into a surrounding plate 100 , a back plate 200 , a door shell 300 and an inner liner 400 .

[0033] In step S2, the following sub-steps are included:

[0034] Step S2-1, punching the enclosure plate 100, punching out a mounting hole 101 on one side of the enclosure plate 100, for mounting components such as a power supply in the refrigerator shell.

[0035] Figure 2 It is a schematic diagram of the structure after the edge of the enclosure plate is punched in an embodiment of the present invention.

[0036] Step S2-2, such as Figure 2 As shown, the edge of the panel plate 100 is punched to form a panel bending edge. The panel plate 100 is rectangular, and the first bending edge 102, the second bending edge 103, the third bending edge 104, the fourth bending edge 105, and the fifth bending edge 106 are formed on one long side of the panel plate 100, and the sixth bending edge 107, the seventh bending edge 108, the eighth bending edge 109, the ninth bending edge 110 and the tenth bending edge 111 are formed on the other long side of the panel plate 100, and bending notches are provided between adjacent bending edges, which can improve the compression and bending resistance of the overall structure of the panel plate 100 and reduce stress concentration. The first hemming 112 and the second hemming 113 are also punched on the short sides of the panel plate 100. The bending notch can provide a space at the bending part when the enclosure plate 100 is bent in a U-shape, thereby preventing the enclosure plate 100 from being deformed at the bending part when being bent in a U-shape, thereby affecting the product quality and appearance.

[0037] Figure 3 It is a schematic diagram of the structure of the enclosure plate after bending and flanging in an embodiment of the present invention.

[0038] Step S2-3, such as Figure 3 As shown, the edges of the enclosure plate 100 are bent and flanged, and the first bent edge 102, the second bent edge 103, the third bent edge 104, the fourth bent edge 105, the fifth bent edge 106, the sixth bent edge 107, the seventh bent edge 108, the eighth bent edge 109, the ninth bent edge 110 and the tenth bent edge 111 are bent and flanged inward in sequence.

[0039] Figure 4 It is a schematic diagram of the structure of the enclosure plate after U-shaped bending in an embodiment of the present invention.

[0040] Step S2-4, such as Figure 4 As shown, the panel plate 100 is bent into a U shape. The panel surface between the first bending edge 102 and the sixth bending edge 107 and between the fifth bending edge 106 and the tenth bending edge 111 on both sides of the panel is bent 90°, and then the panel surface between the second bending edge 103 and the seventh bending edge 108 and between the fourth bending plate 105 and the ninth bending edge 110 is bent 90°, so that the panel plate 100 is bent into a U shape to obtain the panel of the refrigerator shell. The panel is directly bent from the panel plate 100 through the above steps. The panel is integrally formed, has high structural strength, reduces the connection gap caused by splicing, and eliminates the connection process, which is conducive to reducing the production cycle and improving production efficiency.

[0041] Figure 5 It is a schematic diagram of the structure of the back panel material after bending and flanging in an embodiment of the present invention.

[0042] In step S3, if Figure 5 As shown, the edge of the back panel plate 200 is bent and flanged, and the edges of the four sides of the back panel plate 200 are bent and flanged to facilitate connection with the edge of the enclosure plate 100, which is beneficial to improving the sealing performance of the connection.

[0043] Figure 6 It is a schematic diagram of the structure of the door shell plate after bending and flanging in an embodiment of the present invention.

[0044] In step S4, the two side edges of the door shell plate 300 are bent and flanging twice at 90 degrees, so that the two side edges of the door shell plate 300 are "concave" shaped, such as Figure 6 As shown, it is convenient to connect the door shell and the door panel.

[0045] Step S5 includes the following sub-steps:

[0046] Step S5 - 1 , the inner liner plate 400 is divided into a bottom plate 410 , a large U plate 420 and a small U plate 430 .

[0047] Figure 7 2 is a schematic diagram of the structure of the bottom plate after the four corners are hemmed in an embodiment of the present invention; Figure 8 It is a schematic diagram of the structure of the bottom plate after being bent twice in an embodiment of the present invention.

[0048] Step S5-2, the bottom plate 410 is bent. First, the edge of the bottom plate 410 is punched. The long sides of the bottom plate 410 are punched to obtain a first bottom plate bending notch 411 and a second bottom plate bending notch 412. The four corners of the bottom plate 410 are punched to obtain the four corner hemming edges. Figure 7 The bent edge of the bent bottom plate 410 is bent inwards 90°, the four corners of the bottom plate 410 are bent inwards 90°, the bottom plate 410 is bent 90° for the first time along the first bottom plate bending notch 411 and the second bottom plate bending notch 412, and the bottom plate 410 is bent 90° for the second time, and the first bending and the second bending directions are opposite, as shown. Figure 8 By performing edge bending, four-corner hemming, first bending and second bending on the bottom plate 410 in step S5-2, an integrally formed bottom plate can be obtained, the bottom plate has high structural strength, reduces the connection gap caused by splicing, saves the connection process, is conducive to reducing the production cycle and improving production efficiency.

[0049] Fig. 9It is a schematic diagram of the structure of a large U-shaped plate after bending in an embodiment of the present invention.

[0050] In step S5-3, the large U-shaped plate 420 is bent into a "U" shape. Fig. 9 shown.

[0051] Fig.10 It is a schematic diagram of the structure of the small U-shaped plate after bending in an embodiment of the present invention.

[0052] In step S5-2, the small U-shaped plate 430 is bent into a "U" shape. Fig.10 shown.

[0053] Step S6, assembling the inner liner, the bottom of the large U plate 420 is connected to the bottom plate 410, the side edge of the large U plate 420 is connected to the bottom plate 410, the bottom of the small U plate 430 is connected to the bottom plate 410, and the side edge of the small U plate 430 is connected to the side edge of the large U plate 420.

[0054] The present invention also provides a refrigerator shell, which is manufactured by the above-mentioned CNC forming process method for a refrigerator shell, and includes a surround, a back panel, a door shell and an inner liner. The two sides of the back panel are connected to the surround, the door shell is arranged on the surround, and the inner liner is arranged in the surround. The inner liner includes a bottom plate, a large U plate and a small U plate. The surround is manufactured from a surround plate material 100 through step S2, the back panel is manufactured from a back panel plate material 200 through step S3, the door shell is manufactured from a door shell plate material 300 through step S4, and the inner liner is manufactured from an inner liner plate material 400 through steps S5 and S6.

[0055] The bottom plate includes a first transverse plate 413, a first vertical plate 414 and a second transverse plate 415. The bottom U-shaped edge of the large U-plate is connected to the edge of the first transverse plate 413, the straight edge of the side of the large U-plate is connected to the edge of the first vertical plate 414, the bottom U-shaped edge of the small U-plate is connected to the edge of the second transverse plate 415, and the straight edge of the side of the small U-plate is connected to the straight edge of the side of the large U-plate, which improves the sealing of the inner tank and is beneficial to improving the thermal insulation performance of the refrigerator.

[0056] Functions and Effects of the Embodiments

[0057] The CNC forming process method of the refrigerator shell provided by the present invention comprises the following steps: step S1, plate punching and segmentation; step S2, enclosure forming and processing; step S3, back plate forming and processing; step S4, door shell forming and processing; step S5, liner forming and processing; step S6, liner assembly. By dividing a plate into multiple plates, the utilization rate of the plate is improved. The enclosure, back plate and door shell are all integrally formed by punching and bending, which reduces the connection gap caused by splicing, saves the connection process, is conducive to reducing the production cycle and improving production efficiency. The present invention also provides a refrigerator shell with good sealing performance, good thermal insulation performance, and reduced energy loss of the refrigerator.

[0058] Therefore, the CNC forming process method for the refrigerator shell provided by the present invention has a low production cycle, high production efficiency, effective use of plate materials, and reduced production costs, while providing a refrigerator shell with good sealing performance, good thermal insulation performance, and reduced refrigerator energy loss.

[0059] 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 forming process for a refrigerator shell, characterized in that: The following steps are involved: Step S1, sheet material punching and splitting; Step S2, enclosure molding; Step S3, back panel molding; Step S4, door shell molding; Step S5, liner molding; Step S6, liner assembly.

2. The CNC forming process for a refrigerator shell according to claim 1, characterized in that: In step S1, the sheet material is punched and divided into a surround sheet material, a back sheet material, a door shell sheet material and an inner liner sheet material.

3. The CNC forming process for a refrigerator shell according to claim 2, characterized in that: In step S2, the following sub-steps are included: step S2-1, punching holes in the enclosure plate; step S2-2, punching the edge of the enclosure plate to form a bending edge of the enclosure plate; step S2-3, bending and flanging the edge of the enclosure plate; step S2-4, U-bending the enclosure plate.

4. The CNC forming process for a refrigerator shell according to claim 3, characterized in that: In step S3, the edge of the back panel material is bent and flanging.

5. The CNC forming process for a refrigerator shell according to claim 4, characterized in that: In step S4, the two side edges of the door shell plate are bent and flanging twice.

6. The CNC forming process for a refrigerator shell according to claim 5, characterized in that: Step S5 includes the following sub-steps: step S5-1, dividing the inner liner plate into a bottom plate, a large U plate and a small U plate; step S5-2, bending the bottom plate; step S5-3, bending the large U plate; step S5-4, bending the small U plate.

7. The CNC forming process for a refrigerator shell according to claim 6, characterized in that: In step S5-2, the bottom plate is subjected to four-corner hemming, a first bending, and a second bending in sequence to bend the bottom plate into a "Z" shape; in step S5-3, the large U plate is bent twice to bend the large U plate into a "U" shape; in step S5-4, the small U plate is bent twice to bend the small U plate into a "U" shape.

8. A refrigerator shell manufactured by the refrigerator shell CNC forming process according to any one of claims 1 to 7, characterized in that: It includes an enclosure, a back plate, a door shell and an inner liner. The two sides of the back plate are connected to the enclosure, the door shell is arranged on the enclosure, and the inner liner is arranged in the enclosure.

9. The refrigerator housing according to claim 8, characterized in that: The liner includes a bottom plate, a large U plate and a small U plate, the bottom plate includes a first transverse plate, a first vertical plate and a second transverse plate, one side of the first vertical plate is connected to the first transverse plate, the other side of the first vertical plate is connected to the second transverse plate, the bottom of the large U plate is connected to the first transverse plate, the side edge of the large U plate is connected to the first vertical plate, the bottom of the small U plate is connected to the second transverse plate, and the side edge of the small U plate is connected to the side edge of the large U plate.

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