A process for manufacturing a partitioning stud

Abstract

The application discloses a partition wall batten manufacturing process, which comprises the following steps: step S1, providing a steel plate; step S2, performing roll pressing treatment on the steel plate to obtain a to-be-punched batten; and step S3, performing punching treatment on a to-be-punched area in a connecting section of the to-be-punched batten according to a punching process design to obtain a CH batten or a CHC batten. By adopting the application, the material cost can be saved on the basis of guaranteeing the original wall plate mounting function of the CH batten or the CHC batten, and the production is more favorable.

Description

Technical Field

[0001] This invention relates to the field of keel technology, and in particular to a process for manufacturing partition wall keels. Background Technology

[0002] Keel is a building material used to support shapes and fix structures; it serves as the framework and base material for decoration and is widely used. CH keel and CHC keel, as framework materials for partition walls, have been promoted and used in the market. Figure 1 As shown, existing CH keels are typically formed by rolling and bending a single steel plate to create a continuous C-groove structure 1a and an H-groove structure 1b; for example... Figure 2 As shown, the existing CHC keel is usually formed by rolling and bending a steel plate to form a continuous first C-shaped groove structure 2a, an H-shaped groove structure 2b, and a second C-shaped groove structure 2c.

[0003] However, due to the continuity of the rolling process, the C-shaped groove structure 1a and the H-shaped groove structure 1b in the CH keel are connected by the folded edge structure 1c; the connection between the first C-shaped groove structure 2a and the H-shaped groove structure 2b, and the connection between the H-shaped groove structure 2b and the second C-shaped groove structure 2c in the CHC keel are formed by the folded edge structure 2d. Both the folded edge structures 1c and 2d are formed by folding two layers of steel plates, which increases the amount of sheet metal used in the keel and results in higher production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a partition wall keel manufacturing process that, while ensuring the original wall panel installation function of CH keel or CHC keel, can save material costs and is more conducive to production.

[0005] To achieve the above objectives, one aspect of the technical solution adopted by the present invention is as follows:

[0006] A process for manufacturing partition wall framing includes the following steps:

[0007] Step S1: Provide steel plates;

[0008] Step S2: Roll forming the steel plate to obtain a stamping keel; the stamping keel is formed with a first mounting section, a connecting section and a second mounting section arranged sequentially along the X direction of the keel; the first mounting section includes a top plate, a first side wing plate connected to the side of the top plate away from the connecting section and a second side wing plate connected to the side of the top plate near the connecting section; the second mounting section includes a mounting plate and a first flange connected to one end of the mounting plate in the Z direction; the extension length of the first side wing plate along the Z direction of the keel is greater than the extension length of the second side wing plate along the Z direction of the keel; one end of the connecting section is connected to the end of the second side wing plate away from the top plate, and the other end of the connecting section is connected to the first flange;

[0009] Step S3: According to the stamping process design, the connecting section is divided into multiple areas to be stamped. Then, the areas to be stamped are stamped to form multiple first connecting plates extending along the X direction of the keel and spaced apart along the Y direction of the keel. In the area to be stamped, multiple second connecting plates extending along the Z direction of the keel and spaced apart along the Y direction of the keel are formed at the end of the second side wing plate away from the top plate. The first connecting plates and the second connecting plates are arranged alternately and staggeredly to obtain the CH keel. In the CH keel, the first side wing plate, the top plate, the second side wing plate and the second connecting plate together form a C-shaped groove structure, and the second side wing plate, the second connecting plate, the first connecting plate and the second mounting section together form an H-shaped groove structure.

[0010] As a preferred embodiment of the above-mentioned partition wall keel manufacturing process, the end of the first side wing plate away from the top plate is folded inward toward the C-shaped groove structure to form a flange, so that the flange is arranged at a 90-degree angle with the first side wing plate.

[0011] As a preferred embodiment of the above-mentioned partition wall keel manufacturing process, the end of the second connecting plate away from the second side wing plate is bent into the C-shaped groove structure to form a bent portion.

[0012] As a preferred embodiment of the above-mentioned partition wall keel manufacturing process, the end of the mounting plate away from the first folded edge is bent into the H-shaped groove structure to form a second folded edge.

[0013] In addition, to achieve the above objectives, another aspect of the present invention adopts the following technical solution:

[0014] Step S1: Provide steel plates;

[0015] Step S2: The steel plate is roll-pressed to obtain a stamping keel; the stamping keel is formed with a first mounting section, a connecting section and a second mounting section arranged sequentially along the X direction of the keel. The first mounting section includes a top plate, a first side wing plate connected to the top plate away from the connecting section and a second side wing plate connected to the top plate near the connecting section; the second mounting section includes a bottom plate, a third side wing plate connected to the bottom plate near the connecting section and a fourth side wing plate connected to the bottom plate away from the connecting section; the extension length of the first side wing plate along the Z direction of the keel is greater than the extension length of the second side wing plate along the Z direction of the keel, and the extension length of the third side wing plate along the Z direction of the keel is less than the extension length of the fourth side wing plate along the Z direction of the keel; one end of the connecting section is connected to the end of the second side wing plate away from the top plate, and the other end of the connecting section is connected to the end of the third side wing plate away from the bottom plate;

[0016] Step S3: According to the stamping process design, the connecting section is divided into multiple first stamping areas and multiple second stamping areas. Then, the first and second stamping areas are stamped to form multiple first connecting plates extending along the X direction of the keel and spaced apart from the Y direction of the keel. A portion of the first stamping area forms multiple second connecting plates extending along the Z direction of the keel and spaced apart from the Y direction of the keel at the end of the second side wing plate away from the top plate. A portion of the second stamping area forms multiple second connecting plates extending along the Z direction of the keel and spaced apart from the Y direction of the keel at the end of the third side wing plate away from the bottom plate. A third connecting plate extends and is spaced apart along the Y-direction of the keel. The first connecting plate, the second connecting plate, and the third connecting plate are arranged alternately and staggeredly to form a CHC keel. In the CHC keel, the first side wing plate, the top plate, the second side wing plate, and the second connecting plate together form a first C-shaped groove structure; the second side wing plate, the second connecting plate, the first connecting plate, the third side wing plate, and the third connecting plate together form an H-shaped groove structure; and the third connecting plate, the third side wing plate, the bottom plate, and the fourth side wing plate together form a second C-shaped groove structure.

[0017] As a preferred embodiment of the above-mentioned partition wall keel manufacturing process, the end of the first side wing plate away from the top plate is folded inward toward the first C-shaped groove structure to form a first flange, so that the first flange is arranged at a 90-degree angle with the first side wing plate.

[0018] As a preferred embodiment of the above-mentioned partition wall keel manufacturing process, the end of the fourth side wing plate away from the bottom plate is folded into the second C-shaped groove structure to form a second flange, so that the second flange is arranged at a 90-degree angle with the fourth side wing plate.

[0019] As a preferred embodiment of the above-mentioned partition wall keel manufacturing process, the end of the second connecting plate away from the second side wing plate is bent into the first C-shaped groove structure to form a first bending part.

[0020] As a preferred embodiment of the above-mentioned partition wall keel manufacturing process, the end of the third connecting plate away from the third side wing plate is bent into the second C-shaped groove structure to form a second bending part.

[0021] The advantages of implementing the partition wall keel manufacturing process provided by this invention compared with the prior art are as follows:

[0022] (1) In the manufacturing process of CH keel, this invention performs a stamping process on the stamping area of ​​the connecting section of the keel to be stamped. Multiple second connecting plates extending along the Z-direction of the keel and spaced apart along the Y-direction are formed in the stamping area at the end of the second side wing plate away from the top plate. This replaces the folded edge structure in the existing C-groove and H-groove structures of CH keel, thereby reducing the amount of sheet material used in the folded edge structure. Simultaneously, multiple first connecting plates extending along the X-direction of the keel and spaced apart along the Y-direction are formed in the connecting section. Compared to the existing CH keel where the connecting section is a single piece of sheet material, this reduces the amount of sheet material used in the existing H-groove structure of CH keel. Therefore, this invention saves material costs and is more conducive to production while ensuring the original wall panel installation function of the CH keel.

[0023] (2) In the manufacturing process of CHC keel, the present invention performs stamping treatment on the first stamping area and the second stamping part of the connecting section of the keel to be stamped. The part of the first stamping area forms multiple second connecting plates extending along the Z direction of the keel and spaced apart along the Y direction of the keel at the end of the second side wing plate away from the top plate. The part of the second stamping area forms multiple third connecting plates extending along the Z direction of the keel and spaced apart along the Y direction of the keel at the end of the third side wing plate away from the bottom plate. This can replace the folded edge structure between the first C-shaped groove structure and the H-shaped groove structure, and between the H-shaped groove structure and the second C-shaped groove structure in the existing CHC keel, thereby reducing the amount of sheet material used in the folded edge structure. At the same time, the connecting section forms multiple first connecting plates extending along the X direction of the keel and spaced apart from the Y direction of the keel. Compared with the setting of the connecting section in the existing CHC keel as a whole sheet material, it can reduce the amount of sheet material used in the existing CHC keel H-shaped groove structure. It is evident that this invention, while preserving the original wall panel installation function of CHC keel, can save material costs and is more conducive to production. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0025] Figure 1 This is a schematic diagram of the existing CH keel structure;

[0026] Figure 2 This is a schematic diagram of the existing CHC keel structure;

[0027] Figure 3 This is a schematic diagram of the structure of CH keel obtained under a partition wall keel manufacturing process provided in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of CHC keel obtained under a partition wall keel manufacturing process provided in an embodiment of the present invention.

[0029] Marked in the image:

[0030] 1a. C-shaped groove structure; 1b. H-shaped groove structure;

[0031] 2a. First C-shaped groove structure; 2b. H-shaped groove structure; 2c. Second C-shaped groove structure;

[0032] 1. First mounting section; 11. Top plate; 12. First side wing plate; 13. Second side wing plate; 14. Second connecting plate; 15. Flanged edge; 16. Bending section; 2. Connecting section; 21. First connecting plate; 3. Second mounting section; 31. Mounting plate; 32. First folded edge; 33. Second folded edge;

[0033] 4. First mounting section; 41. Top plate; 42. First side wing plate; 43. Second side wing plate; 44. Second connecting plate; 45. First flange; 46. First bending section; 5. Connecting section; 51. First connecting plate; 6. Second mounting section; 61. Bottom plate; 62. Third side wing plate; 63. Fourth side wing plate; 64. Third connecting plate; 65. Second flange; 66. Second bending section. Detailed Implementation

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0035] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0036] Please see Figure 3 One aspect of the present invention provides a process for manufacturing partition wall framing, which includes the following steps:

[0037] Step S1: Provide steel plates;

[0038] Step S2: The steel plate is rolled to obtain a stamping keel; the stamping keel is formed with a first mounting section 1, a connecting section 2 and a second mounting section 3 arranged sequentially along the X direction of the keel. The first mounting section 1 includes a top plate 11, a first side wing plate 12 connected to the top plate 11 on the side away from the connecting section 2 and a second side wing plate 13 connected to the top plate 11 on the side close to the connecting section 2; the second mounting section 3 includes a mounting plate 31 and a first flange 32 connected to one end of the mounting plate 31 in the Z direction; the extension length of the first side wing plate 12 along the Z direction of the keel is greater than the extension length of the second side wing plate 13 along the Z direction of the keel; one end of the connecting section 2 is connected to the end of the second side wing plate 13 away from the top plate 11, and the other end of the connecting section 2 is connected to the first flange 32;

[0039] Step S3: According to the stamping process design, the connecting section 2 is divided into multiple areas to be stamped. Then, the areas to be stamped are stamped to form multiple first connecting plates 21 extending along the X direction of the keel and spaced apart along the Y direction of the keel. In the area to be stamped, multiple second connecting plates 14 extending along the Z direction of the keel and spaced apart along the Y direction of the keel are formed at the end of the second side wing plate 13 away from the top plate 11. The first connecting plates 21 and the second connecting plates 14 are arranged alternately and staggered to obtain the CH keel. In the CH keel, the first side wing plate 12, the top plate 11, the second side wing plate 13 and the second connecting plate 14 together form a C-shaped groove structure, and the second side wing plate 13, the second connecting plate 14, the first connecting plate 21 and the second mounting section 3 together form an H-shaped groove structure.

[0040] The partition wall keel manufacturing process of this invention involves stamping the area to be stamped in the connecting section 2 of the keel to be stamped. Multiple second connecting plates 14, extending along the Z-direction and spaced apart along the Y-direction of the keel, are formed in the area to be stamped at the end of the second side wing plate 13 away from the top plate 11. This replaces the folded edge structure in the existing C-groove and H-groove structures of CH keels, thereby reducing the amount of sheet material used in the folded edge structure. Simultaneously, the connecting section 2 forms multiple first connecting plates 21 extending along the X-direction and spaced apart along the Y-direction of the keel. Compared to the existing CH keel where the connecting section 2 is a single piece of sheet material, this reduces the amount of sheet material used in the existing H-groove structure of CH keels. Therefore, this invention saves material costs and is more conducive to production while maintaining the original wall panel installation function of the CH keel.

[0041] For example, during production, the end of the first side wing plate 12 away from the top plate 11, the end of the second connecting plate 14 away from the second side wing plate 13, and the end of the mounting plate 31 away from the first folded edge 32 are all provided with bending structures to make the first side wing plate 12, the second connecting plate 14, and the mounting plate 31 flush, so as to avoid the protruding parts affecting the stacking of the keel. The specific operation is as follows:

[0042] (1) The end of the first side wing plate 12 away from the top plate 11 is folded into the C-shaped groove structure to form a flange 15, so that the flange 15 is arranged at 90 degrees with the first side wing plate 12.

[0043] (2) The end of the second connecting plate 14 away from the second side wing plate 13 is bent into the C-shaped groove structure to form a bent part 16;

[0044] (3) The end of the mounting plate 31 away from the first folded edge 32 is bent into the H-shaped groove structure to form a second folded edge 33.

[0045] Additionally, please see Figure 4 Another aspect of the present invention provides a process for manufacturing partition wall keel, which includes the following steps:

[0046] Step S1: Provide steel plates;

[0047] Step S2: The steel plate is roll-pressed to obtain a stamping keel; the stamping keel has a first mounting section 4, a connecting section 5, and a second mounting section 6 arranged sequentially along the X direction of the keel. The first mounting section 4 includes a top plate 41, a first side wing plate 42 connected to the top plate 41 away from the connecting section 5, and a second side wing plate 43 connected to the top plate 41 near the connecting section 5; the second mounting section 6 includes a bottom plate 61 and a third side wing plate 62 connected to the bottom plate 61 near the connecting section 5. And a fourth side wing plate 63 connected to the bottom plate 61 on the side away from the connecting segment 5; the extension length of the first side wing plate 42 along the Z direction of the keel is greater than the extension length of the second side wing plate 43 along the Z direction of the keel, and the extension length of the third side wing plate 62 along the Z direction of the keel is less than the extension length of the fourth side wing plate 63 along the Z direction of the keel; one end of the connecting segment 5 is connected to the end of the second side wing plate 43 away from the top plate 41, and the other end of the connecting segment 5 is connected to the end of the third side wing plate 62 away from the bottom plate 61;

[0048] Step S3: According to the stamping process design, the connecting section 5 is divided into multiple first stamping areas and multiple second stamping areas. Then, the first and second stamping areas are stamped to form multiple first connecting plates 51 extending along the X direction of the keel and spaced apart from the Y direction of the keel. In the portion of the first stamping area, multiple second connecting plates 44 extending along the Z direction of the keel and spaced apart from the Y direction of the keel are formed at the end of the second side wing plate 43 away from the top plate 41. In the portion of the second stamping area, multiple second connecting plates 44 extending along the Z direction of the keel and spaced apart from the Y direction of the keel are formed at the end of the third side wing plate 62 away from the bottom plate 61. A third connecting plate 64 is arranged alternately, with the first connecting plate 51, the second connecting plate 44, and the third connecting plate 64 arranged in a staggered manner to form a CHC keel; wherein, in the CHC keel, the first side wing plate 42, the top plate 41, the second side wing plate 43, and the second connecting plate 44 together form a first C-shaped groove structure; the second side wing plate 43, the second connecting plate 44, the first connecting plate 51, the third side wing plate 62, and the third connecting plate 64 together form an H-shaped groove structure; the third connecting plate 64, the third side wing plate 62, the bottom plate 61, and the fourth side wing plate 63 together form a second C-shaped groove structure.

[0049] The partition wall keel manufacturing process of the present invention involves stamping a first stamping area and a second stamping portion of the connecting section 5 of the keel to be stamped. In the first stamping area, multiple second connecting plates 44 extending along the Z-direction of the keel and spaced apart along the Y-direction are formed at the end of the second side wing plate 43 away from the top plate 41. Similarly, multiple third connecting plates 64 extending along the Z-direction of the keel and spaced apart along the Y-direction are formed at the end of the third side wing plate 62 away from the bottom plate 61. This process can replace the folded edge structure between the first C-groove structure and the H-groove structure, and between the H-groove structure and the second C-groove structure in existing CHC keels, thereby reducing the amount of sheet material used in the folded edge structure. Simultaneously, the connecting section 5 forms multiple first connecting plates 51 extending along the X-direction of the keel and spaced apart from the Y-direction of the keel. Compared to the existing CHC keel where the connecting section is a single piece of sheet material, this process reduces the amount of sheet material used in the existing CHC keel with an H-groove structure. It is evident that this invention, while preserving the original wall panel installation function of CHC keel, can save material costs and is more conducive to production.

[0050] For example, during production, the end of the first side wing plate 42 away from the top plate 41, the end of the second connecting plate 44 away from the third side wing plate 43, the end of the third connecting plate 64 away from the third side wing plate 62, and the end of the fourth side wing plate 63 away from the bottom plate 61 are all provided with bending structures, so that the first side wing plate 42 is flush with the second connecting plate 44, and the third connecting plate 64 is flush with the fourth side wing plate 63, so as to avoid the protruding parts affecting the stacking of the keel. The specific operation is as follows:

[0051] (1) The end of the first side wing plate 42 away from the top plate 41 is folded into the first C-shaped groove structure to form a first flange 45, so that the first flange 45 is arranged at 90 degrees with the first side wing plate 42.

[0052] (2) The end of the fourth side wing plate 63 away from the bottom plate 61 is folded into the second C-shaped groove structure to form a second flange 65, so that the second flange 65 is arranged at 90 degrees with the fourth side wing plate 63.

[0053] (3) The end of the second connecting plate 44 away from the second side wing plate 43 is bent into the first C-shaped groove structure to form a first bending part 46;

[0054] (4) The end of the third connecting plate 64 away from the third side wing plate 62 is bent into the second C-shaped groove structure to form a second bent part 66.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A process for manufacturing a partitioning stud, characterized in that, The method comprises the following steps: Step S1: providing a steel plate; Step S2: performing roll processing on the steel plate to obtain a to-be-stamped keel; the to-be-stamped keel is formed with a first mounting section, a connecting section and a second mounting section arranged in sequence along a keel X direction; the first mounting section comprises a top plate, a first side wing plate connected to a side of the top plate away from the connecting section and a second side wing plate connected to a side of the top plate close to the connecting section; the second mounting section comprises a mounting plate and a first folded edge connected to a Z direction end of the mounting plate; an extension length of the first side wing plate along the keel Z direction is greater than an extension length of the second side wing plate along the keel Z direction; one end of the connecting section is connected to an end of the second side wing plate away from the top plate, and the other end of the connecting section is connected to the first folded edge; Step S3: according to a stamping process design, dividing the connecting section into a plurality of to-be-stamped regions, and then performing stamping processing on the to-be-stamped regions to make the connecting section form a plurality of first connecting plates extending along the keel X direction and arranged at intervals along a keel Y direction, and the to-be-stamped regions form a plurality of second connecting plates extending along the keel Z direction and arranged at intervals along the keel Y direction at an end of the second side wing plate away from the top plate; the first connecting plates and the second connecting plates are arranged in an alternating staggered manner to obtain a CH keel; wherein in the CH keel, the first side wing plate, the top plate, the second side wing plate and the second connecting plate jointly form a C-shaped groove structure, and the second side wing plate, the second connecting plate, the first connecting plate and the second mounting section jointly form an H-shaped groove structure.

2. The process of claim 1, wherein, An end of the first side wing plate away from the top plate is inwardly folded towards the C-shaped groove structure to form a flange, so that the flange is arranged at 90 degrees with the first side wing plate.

3. The process of claim 1 wherein, An end of the second connecting plate away from the second side wing plate is inwardly bent towards the C-shaped groove structure to form a bent portion.

4. The process of claim 1 wherein, An end of the mounting plate away from the first folded edge is inwardly bent towards the H-shaped groove structure to form a second folded edge.

5. A process for manufacturing a partitioning stud, characterized in that, The method comprises the following steps: Step S1: providing a steel plate; Step S2: performing roll processing on the steel plate to obtain a to-be-stamped keel; the to-be-stamped keel is formed with a first mounting section, a connecting section and a second mounting section arranged in sequence along a keel X direction; the first mounting section comprises a top plate, a first side wing plate connected to a side of the top plate away from the connecting section and a second side wing plate connected to a side of the top plate close to the connecting section; the second mounting section comprises a bottom plate, a third side wing plate connected to a side of the bottom plate close to the connecting section and a fourth side wing plate connected to a side of the bottom plate away from the connecting section; an extension length of the first side wing plate along a keel Z direction is greater than an extension length of the second side wing plate along the keel Z direction, and an extension length of the third side wing plate along the keel Z direction is less than an extension length of the fourth side wing plate along the keel Z direction; one end of the connecting section is connected to an end of the second side wing plate away from the top plate, and the other end of the connecting section is connected to an end of the third side wing plate away from the bottom plate; Step S3: according to the stamping process design, the connecting section is divided into a plurality of first to be stamped regions and a plurality of second to be stamped regions, then the first to be stamped regions and the second to be stamped regions are stamped to form a plurality of first connecting plates extending along the keel X direction and spaced apart along the keel Y direction, part of the first to be stamped regions forms a plurality of second connecting plates extending along the keel Z direction and spaced apart along the keel Y direction at one end of the second side wing plate away from the top plate, part of the second to be stamped regions forms a plurality of third connecting plates extending along the keel Z direction and spaced apart along the keel Y direction at one end of the third side wing plate away from the bottom plate, the first connecting plate, the second connecting plate and the third connecting plate are alternately arranged, to obtain a CHC keel; wherein, in the CHC keel, the first side wing plate, the top plate, the second side wing plate and the second connecting plate form a first C-shaped groove structure; the second side wing plate, the second connecting plate, the first connecting plate, the third side wing plate and the third connecting plate form an H-shaped groove structure; the third connecting plate, the third side wing plate, the bottom plate and the fourth side wing plate form a second C-shaped groove structure.

6. The process of claim 5, wherein, The first side wing plate is inwardly folded at one end away from the top plate to form a first flange, so that the first flange is arranged at 90 degrees with the first side wing plate.

7. The process of claim 5, wherein, The fourth side wing plate is inwardly folded at one end away from the bottom plate to form a second flange, so that the second flange is arranged at 90 degrees with the fourth side wing plate.

8. The process of claim 5, wherein, The second connecting plate is inwardly bent at one end away from the second side wing plate to form a first bending part.

9. The process of claim 5, wherein, The third connecting plate is inwardly bent at one end away from the third side wing plate to form a second bending part.

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