Pre-assembled double door and machining apparatus therefor and machining method thereof

Abstract

The application discloses a kind of pre-assembled double doors and processing equipment and its processing method for it, pre-assembled double doors include door outer plate, first door skeleton, first door inner plate, second door skeleton and second door inner plate, door outer plate includes first outer plate part and second outer plate part, first door skeleton and first door inner plate are fixedly connected in first outer plate part, second door skeleton and second door inner plate are fixedly connected in second outer plate part.Pre-assembled double doors according to the application, by installing first door skeleton, first door inner plate, second door skeleton and second door inner plate on one door outer plate, can make the manufacture and installation of door more convenient, improve production efficiency, simultaneously, it is also favorable to make left front door and right front door this left-right symmetrical door more consistent and neat in structure when processing door, preferably improve the overall appearance quality and aesthetic degree and assembly precision of door.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing technology, and in particular to a pre-assembled double door and processing equipment and method for it. Background Technology

[0002] With the increasing number of new energy vehicles on the road, and given the differences in body structure compared to traditional vehicles, new energy vehicle manufacturers are adopting more aggressive exterior styling, thus placing higher demands on product design, especially in terms of vehicle aesthetics and the difficulty of achieving them. At the same time, in order to meet these product design requirements, tooling design and manufacturing methods are becoming increasingly important in this demanding environment. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a pre-assembled double door, which can make the appearance of the door more consistent and neat, and improve the overall appearance quality, aesthetics and assembly precision of the door.

[0004] According to an embodiment of the present invention, the pre-assembled dual door includes an outer door panel, a first door frame, a first inner door panel, a second door frame, and a second inner door panel. The outer door panel includes a first outer panel portion and a second outer panel portion. The first door frame and the first inner door panel are both fixedly connected to the first outer panel portion, and the second door frame and the second inner door panel are both fixedly connected to the second outer panel portion.

[0005] According to an embodiment of the present invention, the pre-assembled double door, by mounting the first door frame, the first door inner panel, the second door frame, and the second door inner panel onto a single door outer panel, makes the manufacturing and installation of the door more convenient and improves production efficiency. Furthermore, when the pre-assembled double door is further processed to produce two doors, not only is processing efficiency improved, but the left and right front doors, being symmetrical, are also structurally more consistent and neat during processing, thus significantly improving the overall appearance quality, aesthetics, and assembly precision of the door.

[0006] In addition, the pre-assembled double doors according to the present invention may also have the following additional technical features:

[0007] In some embodiments of the present invention, the first outer panel includes a first door body region and a first edge region, the first edge region surrounding the outer periphery of the first door body region, the first door frame and the first door inner panel being fixedly connected to the first door body region, and the first edge region being adapted to fold from the outer periphery of the first door inner panel to the side of the first door inner panel away from the first door frame; the second outer panel includes a second door body region and a second edge region, the second edge region surrounding the outer periphery of the second door body region, the second door frame and the second door inner panel being fixedly connected to the second door body region, and the second edge region being adapted to fold from the outer periphery of the second door inner panel to the side of the second door inner panel away from the second door frame.

[0008] In some embodiments of the present invention, a first protrusion is provided on the side of the first door inner panel away from the first door frame, and the first edge area is adapted to cover the first protrusion; a second protrusion is provided on the side of the second door inner panel away from the second door frame, and the second edge area is adapted to cover the second protrusion.

[0009] In some embodiments of the present invention, the first convex bulge and the second convex bulge are symmetrically arranged along the central axis of the outer panel of the door.

[0010] In some embodiments of the present invention, the outer door panel further includes a middle panel portion located between the first outer panel portion and the second outer panel portion, the middle panel portion being adapted to be cut to separate the first outer panel portion and the second outer panel portion.

[0011] In some embodiments of the present invention, the intermediate plate portion has a first punching area adjacent to the first outer plate portion, the first punching area including a third edge-binding area adjacent to the first outer plate portion and a first scrap area away from the first outer plate portion, the first scrap area being adapted for punching, and the third edge-binding area being adapted to be folded from the outer periphery of the first door inner plate to the side of the first door inner plate away from the first door frame; the intermediate plate portion has a second punching area adjacent to the second outer plate portion, the second punching area including a fourth edge-binding area adjacent to the second outer plate portion and a second scrap area away from the second outer plate portion, the second scrap area being adapted for punching, and the fourth edge-binding area being adapted to be folded from the outer periphery of the second door inner plate to the side of the second door inner plate away from the second door frame.

[0012] The present invention also provides a processing device for processing pre-assembled double doors.

[0013] In some embodiments of the present invention, the pre-assembled double door processing equipment includes: a frame, on which a slide rail extending in a vertical direction is provided; a mounting plate, which is movably mounted vertically on the frame, and a slider adapted to the slide rail is provided on the mounting plate; a drive mechanism, which is mounted on the frame for driving the mounting plate to move vertically; and a first door mold, which includes a first upper mold, a first lower mold, and a first edge-sealing assembly, wherein the first upper mold is located on the side of the inner panel of the first door away from the first door frame, and the first lower mold is located on the side of the outer panel away from the first door frame. The first edge-sealing assembly is disposed between the first upper mold and the first lower mold, and the first edge-sealing assembly is adapted to perform edge-sealing operations on the first outer panel portion; the second door mold includes a second upper mold, a second lower mold, and a second edge-sealing assembly, the second upper mold is located on the side of the second door inner panel away from the second door frame, the second lower mold is located on the side of the second outer panel portion away from the second door frame, and the second edge-sealing assembly is disposed between the second upper mold and the second lower mold, and the second edge-sealing assembly is adapted to perform edge-sealing operations on the second outer panel portion; wherein, both the first upper mold and the second upper mold are mounted on the mounting plate.

[0014] According to the processing equipment for pre-assembling double doors of the present invention, by controlling the first upper mold and the second upper mold to move up and down synchronously, the first edge-wrapping assembly and the second edge-wrapping assembly can perform edge-wrapping operations synchronously, which can effectively reduce the error of the door edge-wrapping operation, ensure the accuracy and consistency of the door size and shape, and thus improve the quality and aesthetics of the door.

[0015] In some embodiments of the present invention, the processing equipment for pre-assembled double doors further includes a punching assembly disposed on the first door mold and / or the second door mold, the punching assembly being adapted to punch the middle plate portion of the outer door panel to separate the first outer plate portion and the second outer plate portion.

[0016] In some embodiments of the present invention, the first upper die and the second upper die are fixedly connected to form an upper template, and the first lower die and the second lower die are fixedly connected to form a lower template. The punching assembly includes a first punching assembly, which includes a first floating edge trimmer, a first elastic member, and a first lower die cutting and flipping block. The first floating edge trimmer is movably mounted on the lower side of the upper template. In the vertical direction, the first elastic member is mounted between the first floating edge trimmer and the upper template. The first lower die cutting and flipping block is movably mounted on the upper side of the lower template and is vertically opposite to the first floating edge trimmer. The first floating edge trimmer is adapted to move toward the first lower die cutting and flipping block to punch the intermediate plate portion.

[0017] In some embodiments of the present invention, the first punching assembly further includes a second elastic member, which is installed between the first lower die cutting and turning block and the first lower die in the vertical direction.

[0018] In some embodiments of the present invention, the intermediate plate portion has a first punching area adjacent to the first outer plate portion. The first punching area includes a third edge-binding area adjacent to the first outer plate portion and a first waste area away from the first outer plate portion. The upper side of the first lower die-cutting flipper block has a first area and a second area. The first area is opposite to the third edge-binding area, and the second area is opposite to the first waste area. The first floating cutting blade is vertically opposite to the second area to punch the first waste area. The first punching assembly further includes a first driving member, which is adapted to drive the first lower die-cutting flipper block to move so as to fold the third edge-binding area opposite to the first area upward.

[0019] In some embodiments of the present invention, the blanking assembly includes a second blanking assembly, which includes a second floating edge trimming blade and a second lower die cutting and flipping blade block. The second floating edge trimming blade is movably mounted on the lower side of the upper template, and the second lower die cutting and flipping blade block is movably mounted on the upper side of the lower template and is vertically opposite to the second floating edge trimming blade. The second floating edge trimming blade is adapted to move toward the second lower die cutting and flipping blade block to blank the intermediate plate portion. The first floating edge trimming blade and the second floating edge trimming blade are disposed on both sides of the same blade body in the left-right direction, or the first floating edge trimming blade and the second floating edge trimming blade are disposed separately. The second blanking assembly also includes a third elastic member, which is installed between the second floating edge trimming blade and the upper template in the vertical direction.

[0020] In some embodiments of the present invention, the first lower die cutting and flipping block and the second lower die cutting and flipping block are fixedly connected to form a lower die cutting block, or the first lower die cutting and flipping block and the second lower die cutting and flipping block are separately arranged, and the second punching assembly further includes a fourth elastic member, which is installed between the second lower die cutting and flipping block and the second lower die in the vertical direction.

[0021] In some embodiments of the present invention, the intermediate plate portion has a second punching area adjacent to the second outer plate portion. The second punching area includes a fourth edge-wrapping area adjacent to the second outer plate portion and a second waste area away from the second outer plate portion. The upper side of the second lower die-cutting flipper block has a third area and a fourth area. The third area is opposite to the fourth edge-wrapping area, and the fourth area is opposite to the second waste area. The second floating cutting blade is vertically opposite to the fourth area to punch the second waste area. The second punching assembly further includes a second driving member adapted to drive the second lower die-cutting flipper block to move so as to fold the fourth edge-wrapping area opposite to the third area upward.

[0022] The present invention also proposes a processing method for pre-assembled double doors.

[0023] The processing method for pre-assembled dual doors according to an embodiment of the present invention includes: prefabricating an outer door panel, a first door frame, a first inner door panel, a second door frame, and a second inner door panel; installing the first inner door panel and the first door frame onto a first outer panel portion of the outer door panel; installing the second inner door panel and the second door frame onto a second outer panel portion of the outer door panel; and simultaneously performing edge-wrapping operations on a first edge-wrapping area and a second edge-wrapping area of ​​the outer door panel.

[0024] According to the processing method of the pre-assembled double doors of the present invention, when processing the pre-assembled double doors to produce two doors, not only can the processing efficiency be improved, but it is also beneficial to make the left front door and right front door, which are symmetrical, more consistent and neat in structure during the processing of the doors, thereby improving the overall appearance quality and aesthetics of the doors and the assembly precision.

[0025] In some embodiments of the present invention, the simultaneous edge-wrapping operation on the first edge-wrapping area and the second edge-wrapping area of ​​the outer door panel further includes: simultaneously adapting the first edge-wrapping area to cover the first protrusion of the inner door panel and adapting the second edge-wrapping area to cover the second protrusion of the inner door panel.

[0026] In some embodiments of the present invention, after simultaneously performing edge binding operations on the first edge binding area and the second edge binding area of ​​the outer door panel, the process further includes simultaneously performing a punching operation on the middle panel portion of the outer door panel.

[0027] In some embodiments of the present invention, after the simultaneous punching operation on the middle plate portion of the outer door panel, the third and fourth edge areas of the outer door panel are folded.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a schematic diagram of the partitioning of the outer panel of a pre-assembled double door according to an embodiment of the present invention.

[0031] Figure 2 This is a schematic diagram of the first door body area after the outer panel of the pre-assembled double doors has been punched according to an embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram of the structure of the inner panel of the first door of the pre-assembled double doors according to an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the structure of the first door frame of the pre-assembled double doors according to an embodiment of the present invention.

[0034] Figure 5 This is a partial schematic diagram of the inner panel of the first door of a pre-assembled double door according to an embodiment of the present invention, showing a first protrusion.

[0035] Figure 6 This is a schematic diagram of the structure of the first door mold according to an embodiment of the present invention.

[0036] Figure 7 This is a schematic diagram of the structure of the first lower mold according to an embodiment of the present invention.

[0037] Figure 8 This is a schematic diagram of the structure of the first upper mold according to an embodiment of the present invention.

[0038] Figure 9 This is a schematic diagram of the structure of the first elastic element according to an embodiment of the present invention.

[0039] Figure 10 This is a cross-sectional view of the first elastic member according to an embodiment of the present invention.

[0040] Figure label:

[0041] Door outer panel 10, center axis X,

[0042] First outer panel 1, first door area 11, first edging area 12, third edging area 13

[0043] Second outer panel 5, second door area 51, second edging area 52, fourth edging area 53

[0044] Middle plate section 9,

[0045] First door frame 2, first door inner panel 3, first protrusion 31.

[0046] First door mold 4, first upper mold 41, first lower mold 42

[0047] First punching assembly 6, first floating edge trimmer 61, first elastic element 62, guide sleeve 621, guide post 622, cylinder 623, limiting element 624.

[0048] First die-cutting flipper block 63, first area 631, second area 632.

[0049] Second elastic element 64, stop fast 7, guide mechanism 8. Detailed Implementation

[0050] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0051] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] The following is for reference. Figures 1-5 A pre-assembled double door is described according to an embodiment of the present invention.

[0054] like Figures 1-5 As shown, the pre-assembled dual doors include an outer door panel 10, a first door frame 2, a first inner door panel 3, a second door frame, and a second inner door panel. The outer door panel 10 is the exterior part of the entire door, which can better protect the safety of the door and the occupants, and also enhance the overall aesthetics of the door and the car. Figure 1 As shown, the outer door panel 10 includes a first outer panel portion 1 and a second outer panel portion 5. A first door frame 2 and a first door inner panel 3 are both fixedly connected to the first outer panel portion 1, and a second door frame and a second door inner panel are both fixedly connected to the second outer panel portion 5. Here, we will discuss... Figure 1 It should be noted that, Figure 1 The area of ​​the outer door panel 10 is shown in the diagram with a box formed by dashed lines. This is only for the purpose of understanding and should not be regarded as a limitation on the outer door panel 10 of this application.

[0055] The first door frame 2 and the second door frame are the skeletons of the door, supporting the overall structure of the door and possessing high structural strength, which can improve the structural strength and stability of the door. The first door inner panel 3 and the second door inner panel are the internal covering layers of the door, covering the first door frame 2 and the second door frame respectively. They can protect the mechanical components inside the door and improve the sound insulation and heat insulation of the door. The entire pre-assembled double door structure is based on a modular design. Each module is precisely manufactured and pre-assembled. After assembly, the pre-assembled double door can be processed by specific processing equipment 200 to directly produce two doors. Taking a four-door sedan as an example, the two doors may be the left front door and the right front door, or the left rear door and the right rear door; there is no limitation here.

[0056] Thus, taking the left front door and right front door as an example, it can be understood that when the pre-assembled double doors are processed by the processing equipment 200 to process two doors simultaneously, since the left front door and right front door are structurally symmetrical, the force on the left and right sides of the pre-assembled double doors can be more even during processing. Furthermore, the processing equipment 200 can process two doors at once, which not only improves processing efficiency but also makes the left and right front doors, which are symmetrical, more consistent and neat in structure, thus improving the overall appearance quality and aesthetics of the doors.

[0057] Therefore, according to the embodiments of the present invention, the pre-assembled double doors, by installing the first door frame 2, the first door inner panel 3, the second door frame, and the second door inner panel all on a single door outer panel 10, can make the manufacturing and installation of the doors more stable and improve production efficiency. At the same time, when further processing the pre-assembled double doors to produce two doors, not only can processing efficiency be improved, but it is also beneficial to make the left and right front doors, which are symmetrical, more consistent and neat in structure during door processing, thus improving the overall appearance quality, aesthetics, and assembly precision of the doors.

[0058] In some embodiments of the present invention, reference is made to Figure 1 As shown, the first outer panel 1 includes a first door body region 11 and a first edge region 12. The first edge region 12 surrounds the outer periphery of the first door body region 11. The first door frame 2 and the first door inner panel 3 are both fixedly connected to the door body region. The first edge region 12 is adapted to fold from the outer periphery of the first door inner panel 3 to the side of the first door inner panel 3 away from the first door frame 2. The first door body region 11 is the main part of the door. The first door frame 2 and the first door inner panel 3 are fixedly connected to the first door body region 11 to improve the structural strength and stability of the door. Region 12 can improve the aesthetics and sealing of the car door. The design of the first edge-sealing region 12 allows the outer periphery of the first door inner panel 3 to be folded to the side of the first door inner panel 3 away from the frame, which can effectively prevent dust and moisture from entering between the first door body region 11 and the first door inner panel 3, reduce the risk of corrosion and oxidation of the car door, and improve the safety and durability of the car door. During the production process of the car door, the first edge-sealing region 12 can improve the durability of the car door by increasing the thickness and strength of the material, thereby improving the wind pressure resistance and impact resistance of the car door and improving the safety of the car door.

[0059] refer to Figure 1As shown, the second outer panel portion 5 includes a second door body region 51 and a second edge region 52. The second edge region 52 surrounds the outer periphery of the second door body region 51. The second door frame and the second door inner panel are both fixedly connected to the second door body region 51. The second edge region 52 is adapted to fold from the outer periphery of the second door inner panel to the side of the second door inner panel away from the second door frame. The second door body region 51 is the main part of the door. The second door frame and the second door inner panel are fixedly connected to the second door body region 51, improving the structural strength and stability of the door. The second edge region 52 can... To enhance the aesthetics and sealing of the car door, the design of the second edging area 52 allows the outer periphery of the inner panel to fold over to the side of the second door inner panel away from the second door frame. This effectively prevents dust and moisture from entering between the second door body area 51 and the second door inner panel, improving the door's sealing performance, reducing the risk of corrosion and oxidation, and enhancing the safety and durability of the vehicle. During the door manufacturing process, the second edging area 52 can further improve the door's durability by increasing the thickness and strength of the material, thereby enhancing the door's wind pressure resistance and impact resistance, and improving the door's safety.

[0060] In some embodiments of the present invention, reference is made to Figures 1-5 As shown, a first protrusion 31 is provided on the side of the inner panel 3 of the first door away from the first door frame 2. The first edge-covering area 12 is adapted to cover the first protrusion 31. Thus, by cooperating with the first protrusion 31, the first edge-covering area 12 and the first protrusion 31 can maintain relative stability, thereby improving the positional stability of the inner panel 3 of the first door relative to the first door body area 11 during and after edge-covering. It can also better avoid deformation caused by the edge-covering reaction force, effectively prevent the movement and deformation generated during the edge-covering process, and improve the stability and quality of the edge-covering, thereby enhancing the aesthetics of the door and the overall production quality of the automobile.

[0061] Furthermore, a second protrusion is provided on the side of the second door inner panel away from the second door frame, and the second edge-covering area 52 is adapted to cover the second protrusion. Thus, the cooperation between the second edge-covering area 52 and the second protrusion helps to maintain relative stability between them, thereby improving the positional stability of the second door inner panel relative to the second door body area 51 during and after edge-covering. This effectively prevents deformation caused by the edge-covering reaction force, thus preventing shifting and deformation during the edge-covering process, improving the stability and quality of the edge-covering, and enhancing the aesthetics of the door and the overall production quality of the automobile.

[0062] Optionally, the first convex bulge 31 and the second convex bulge are symmetrically arranged along the central axis X of the outer door panel 10, such as... Figures 1-5As shown, the first door inner panel 3 is located on the left side, and the second door inner panel is located on the right side. The first protrusion 31 is located on the left side of the first door inner panel 3, and the second protrusion is located on the right side of the second door inner panel. Thus, when the pre-assembled double doors are processed to construct two symmetrical doors, the first protrusion 31 and the second protrusion can effectively prevent the movement and deformation generated during the edge-wrapping process, effectively improve the stability and quality of the edge-wrapping, and enhance the aesthetics of the doors and the overall production quality of the automobile.

[0063] In some embodiments of the present invention, such as Figures 1-5 As shown, the outer door panel 10 also includes a middle panel 9, which is located between the first outer panel 1 and the second outer panel 5. The middle panel 9 is suitable for cutting to separate the first outer panel 1 and the second outer panel 5. The first door frame 2, the first door inner panel 3, and the first outer panel 1 constitute the first prefabricated door body, and the second door frame, the second door inner panel, and the second outer panel 5 constitute the second prefabricated door body. In other words, constructing a middle panel 9 suitable for cutting on the outer door panel 10 can facilitate further processing of the pre-assembled double door. That is, constructing the middle panel 9 can reserve error dimensions for further processing of the pre-assembled double door, which can avoid the inconsistency in shape between the first prefabricated door body and the second prefabricated door body due to size and other reasons during processing, thereby ensuring the reliability of the first prefabricated door body and the second prefabricated door body after processing.

[0064] In some embodiments of the present invention, such as Figures 1-5 As shown, the middle panel 9 has a first punching area adjacent to the first outer panel 1. The first punching area includes a third edge-binding area 13 adjacent to the first outer panel 1 and a first scrap area away from the first outer panel 1. The first scrap area is suitable for punching, separating the first outer panel 1 from the second outer panel 5 while cutting off excess scrap, thus better ensuring the flatness of the door. The third edge-binding area 13 is suitable for folding from the outer periphery of the first door inner panel 3 to the side of the first door inner panel 3 away from the first door frame 2, which can help fix the first door inner panel 3, enhance the structural strength and stability of the door, and improve the aesthetics of the door. From an aesthetic perspective, the middle panel 9 has a second punching area adjacent to the second outer panel 5. The second punching area includes a fourth edge-binding area 53 adjacent to the second outer panel 5 and a second scrap area away from the second outer panel 5. The second scrap area is suitable for punching, which separates the second outer panel 5 from the first outer panel 1 and cuts off the excess scrap, thus better ensuring the flatness of the door. The fourth edge-binding area 53 is suitable for folding from the outer periphery of the second door inner panel to the side of the second door inner panel away from the first door frame 2, which can help fix the second door inner panel, enhance the structural strength and stability of the door, and improve the aesthetics of the door.

[0065] The present invention also proposes a processing equipment 200 for processing pre-assembled double doors.

[0066] In some embodiments of the present invention, reference is made to Figures 6-10 As shown, the processing equipment 200 includes a frame, a mounting plate, a drive mechanism, a first door mold 4, and a second door mold. The first door mold 4 and the second door mold are arranged symmetrically on the left and right sides. (See attached document.) Figure 6 , Figure 7 and Figure 8 The illustration is based solely on the first door mold 4.

[0067] The frame is provided with a slide rail extending in the vertical direction. The mounting plate is movably mounted on the frame. The mounting plate is provided with a slider that matches the slide rail. The drive mechanism is mounted on the frame to drive the mounting plate to move up and down. The first upper mold 41 and the second upper mold are both mounted on the mounting plate.

[0068] like Figures 1-10 As shown, the first door mold 4 includes a first upper mold 41, a first lower mold 42, and a first edge-wrapping assembly. The first upper mold 41 is located on the side of the first door inner panel 3 away from the first door frame 2, and the first lower mold 42 is located on the side of the first outer panel 1 away from the first door frame 2. The first edge-wrapping assembly is disposed between the first upper mold 41 and the first lower mold 42. The first edge-wrapping assembly is suitable for performing edge-wrapping operations on the first outer panel 1. The first prefabricated door body is fixedly placed on the first lower mold 42, which facilitates the edge-wrapping processing of the first edge-wrapping assembly, thereby improving the quality and aesthetics of the door.

[0069] The second door mold includes a second upper mold, a second lower mold, and a second edge-wrapping assembly. The second upper mold is located on the side of the inner panel of the second door away from the second door frame, and the second lower mold is located on the side of the outer panel 5 away from the second door frame. The second edge-wrapping assembly is disposed between the second upper mold and the second lower mold. The second edge-wrapping assembly is suitable for edge-wrapping the outer panel 5. The second prefabricated door body is fixedly placed on the second lower mold, which facilitates the edge-wrapping process of the second edge-wrapping assembly, thereby improving the quality and aesthetics of the door. By controlling the first upper mold 41 and the second upper mold to move up and down synchronously, the first edge-wrapping assembly and the second edge-wrapping assembly can perform edge-wrapping operations synchronously, which can effectively reduce the error of the door edge-wrapping operation, ensure the accuracy and consistency of the door size and shape, and thus improve the quality and aesthetics of the door. It should be noted that the second door mold and the first door mold 4 are arranged symmetrically on the left and right.

[0070] In some embodiments of the present invention, the processing equipment 200 further includes a punching assembly, optionally, such as Figures 1-10As shown, the punching assembly can be connected between the first door mold 4 and the second door mold, or it can be connected only to the first door mold 4, or only to the second door mold. There is no special limitation here. The punching assembly is suitable for punching the middle plate portion 9 of the outer door panel 10, so that the first outer plate portion 1 and the second outer plate portion 5 can be separated. While ensuring the overall appearance of the door is consistent, it is convenient to further process and treat the door according to the functional requirements of different doors.

[0071] In some embodiments of the present invention, reference is made to Figures 1-10 As shown, the first upper die 41 and the second upper die are fixedly connected to form an upper template, and the first lower die 42 and the second lower die are fixedly connected to form a lower template. The punching assembly includes a first punching assembly 6, which includes a first floating edge trimmer 61, a first elastic member 62, and a first lower die cutting and flipping block 63. The first floating edge trimmer 61 is movably mounted on the lower side of the upper template. In the vertical direction, the first elastic member 62 is mounted between the first floating edge trimmer 61 and the upper template. The first lower die cutting and flipping block 63 is movably mounted on the upper side of the lower template and is vertically opposite to the first floating edge trimmer 61. The first floating edge trimmer 61 is adapted to move toward the first lower die cutting and flipping block 63 to punch the middle plate portion 9. That is, when the upper template moves downward, the first floating edge trimmer 61 moves downward accordingly and cooperates with the first lower die cutting and flipping block 63 to cut the middle plate portion 9.

[0072] refer to Figure 9 and Figure 10 In one specific embodiment shown, the first elastic element 62 includes a guide sleeve 621, a guide post 622, a cylinder 623, and a limiting element 624. In the initial state, the cylinder 623 protrudes downward, and there is a certain distance between the guide post 622 and the limiting element 624. When the first floating cutting blade 61 contacts the stop block 7, the cylinder 623 is subjected to upward pressure, and the guide post 622 moves toward the limiting element 624 until the guide post 622 completely abuts the limiting element 624 and stops moving. Under the downward pressure of the upper template, the first floating cutting blade 61 completes the cutting of the first waste area. In this process, the first elastic element 62 can better buffer the pressure of the first floating cutting blade 61 on the upper template, extending the service life of the processing equipment 200. A guiding mechanism 8 is also provided on the lower template, which can better ensure the stability of the first lower die-cutting flipper block 63 during its up-and-down movement, so as to ensure the quality of the edge wrapping.

[0073] In some embodiments of the present invention, the first punching assembly 6 further includes a second elastic member 64. In the vertical direction, the second elastic member 64 is installed between the first lower die cutting and turning block 63 and the first lower die 42. The second elastic member 64 can better buffer the pressure of the first floating cutting blade 61 on the first lower die 42, reduce the wear of the first floating cutting blade 61 and the first lower die 42, so as to extend the service life of the processing equipment 200 and reduce the impact force on the first outer plate portion 1, so as to ensure the flatness of the first outer plate portion 1.

[0074] In a specific example, the second elastic element 64 can have a structure largely the same as the first elastic element 62, also including a guide sleeve 621, a guide post 622, a cylinder 623, and a limiting element 624. The limiting element 624 is used to limit the stroke range of the guide post 622. When the guide post 622 moves to a predetermined position, the guide post 622 stops moving. By inflating the cylinder 623, the guide post 622 is lifted, thereby lifting the first lower die-cutting flipper block 63 upwards to perform the flanging operation on the third edge-wrapping area 13. Of course, it should be noted that the second elastic element 64 and the first elastic element 62 may differ in the structural form of some components according to actual needs to better adapt to assembly. This application does not impose any restrictions on this.

[0075] In some embodiments of the present invention, the intermediate plate portion 9 has a first punching area adjacent to the first outer plate portion 1. The first punching area includes a third edge-binding area 13 adjacent to the first outer plate portion 1 and a first scrap area away from the first outer plate portion 1. The upper side of the first lower die-cutting flipper block 63 has a first area 631 and a second area 632. The first area 631 is opposite to the third edge-binding area 13, and the second area 632 is opposite to the first scrap area. The first floating edge-cutting blade 61 is vertically opposite to the second area 632 to punch the first scrap area. The first punching assembly 6 also includes a first driving member, which is adapted to drive the first lower die-cutting flipper block 63 to move so as to flip the third edge-binding area 13 opposite to the first area 631 upward. In other words, the first floating edge-cutting blade 61 cooperates with the second area 632 of the first lower die-cutting flip-blade block 63 to cut the first waste area. The first driving component can drive the first lower die-cutting flip-blade block 63 to move upward. Specifically, the first driving component can be the second elastic component 64 mentioned above. The second elastic component 64 includes a guide sleeve 621, a guide post 622, a cylinder 623, and a limiting component 624. It can be inflated toward the cylinder 623, thereby pushing the first lower die-cutting flip-blade block 63 upward. The first area 631 of the first lower die-cutting flip-blade block 63 can lift the third edge-wrapping area 13 upward to achieve the folding effect. This design makes the cutting and folding process of the processing equipment 200 simpler and improves work efficiency.

[0076] In some embodiments of the present invention, the blanking assembly includes a second blanking assembly, which includes a second floating edge cutting blade and a second lower die cutting flipping block. The second floating edge cutting blade is movably mounted on the lower side of the upper template, and the second lower die cutting flipping block is movably mounted on the upper side of the lower template and is vertically opposite to the second floating edge cutting blade. The second floating edge cutting blade is adapted to move toward the second lower die cutting flipping block to blank the intermediate plate portion 9.

[0077] In one example, the first floating cutting blade 61 and the second floating cutting blade are arranged on both sides of the same blade body in the left-right direction. Thus, when the upper template drives the blade body to move downward, and the first floating cutting blade 61 and the second floating cutting blade simultaneously come into contact with the first waste area and continue to punch, the first floating cutting blade 61 and the second floating cutting blade can be buffered by the action of the first elastic member 62.

[0078] In another example, the first floating edge cutting blade 61 and the second floating edge cutting blade are set separately, that is, the first floating edge cutting blade 61 and the second floating edge cutting blade are two independent structural components. The lower end of the first elastic member 62 is connected to the upper side of the first floating edge cutting blade 61. In this case, in order to ensure that the second floating edge cutting blade can also be buffered during the punching operation, a third elastic member can be added. That is, the second punching assembly also includes a third elastic member. In the vertical direction, the third elastic member is installed between the second floating edge cutting blade and the upper template. Thus, when the first floating edge cutting blade 61 and the second floating edge cutting blade perform punching operations simultaneously, the first elastic member 62 can better buffer the first floating edge cutting blade 61, and the third elastic member can better buffer the second floating edge cutting blade.

[0079] In a specific example, the third elastic element can have a structure that is roughly the same as that of the first elastic element 62, including a guide sleeve 621, a guide post 622, a cylinder 623, and a limiting element 624. The limiting element 624 is used to limit the stroke range of the guide post 622. When the guide post 622 moves to a predetermined position, the guide post 622 stops moving. The guide post 622 can be lifted up by inflating the cylinder 623. In this process, the third elastic element can better buffer the pressure of the second floating cutting blade on the second upper die and extend the service life of the processing equipment 200.

[0080] In some embodiments of the present invention, the first lower die cutting and flipping block 63 and the second lower die cutting and flipping block are separately arranged. The second punching assembly also includes a fourth elastic element. In the vertical direction, the fourth elastic element is installed between the second lower die cutting and flipping block and the second lower die. In a specific embodiment, the fourth elastic element can better buffer the pressure of the second floating edge cutting blade on the second lower die, reduce the wear of the second floating edge cutting blade and the second lower die, so as to extend the service life of the processing equipment 200 and reduce the impact force on the second outer plate portion 5 to ensure the flatness of the second outer plate portion 5. Optionally, the fourth elastic element can have the same structure as the first elastic element 62, and also include a guide sleeve 621, a guide post 622, a cylinder 623 and a limiting member 624. The limiting member 624 is used to limit the stroke range of the guide post 622. When the guide post 622 moves to a predetermined position, the guide post 622 stops moving. By inflating the cylinder 623, the guide post 622 is lifted, and the second lower die cutting and flipping block is used to perform the flanging operation on the fourth edge-wrapping area 53.

[0081] Optionally, the first lower die-cutting flipper block 63 and the second lower die-cutting flipper block are fixedly connected to form a lower die block. Only the second elastic element 64 can be provided to buffer the pressure of the lower die block on the lower template. In this way, only one second elastic element 64 can be provided, without the need for a fourth elastic element. That is, only by inflating the second elastic element 64, the second elastic element 64 is lifted up, thereby causing the second elastic element 64 to lift the lower die block upward. This allows the first lower die-cutting flipper block 63 and the second lower die-cutting flipper block to move upward simultaneously to perform the flanging work on the third edge-sealing area 13 and the fourth edge-sealing area 53, respectively.

[0082] In some embodiments of the present invention, the intermediate plate portion 9 has a second punching area adjacent to the second outer plate portion 5. The second punching area includes a fourth edge-wrapping area 53 adjacent to the second outer plate portion 5 and a second scrap area away from the second outer plate portion 5. The upper side of the second lower die-cutting flipper block has a third area and a fourth area. The third area is opposite to the fourth edge-wrapping area 53, and the fourth area is opposite to the second scrap area. The second floating edge-cutting blade is vertically opposite to the fourth area to punch the second scrap area. The second punching assembly also includes a second driving member. The second driving member is adapted to drive the second lower die-cutting flipper block to move so as to fold the fourth edge-wrapping area 53 opposite to the third area upward. That is, the second floating edge-cutting blade and the fourth area are vertically opposite to each other. The fourth area of ​​the second lower die-cutting flip block cooperates to cut the second waste area, and the second driving component can drive the second lower die-cutting flip block to move upward. Specifically, the second driving component inflates the fourth elastic element, causing the fourth elastic element to lift up, which in turn causes the fourth elastic element to lift the second lower die-cutting flip block upward. The third area of ​​the second lower die-cutting flip block can lift the fourth edge-binding area 53 upward to achieve the folding effect. This design makes the cutting and folding process of the processing equipment 200 simpler and improves work efficiency. It should be noted that, under the condition of meeting the function, only one of the first driving component and the second driving component can be set to inflate the second elastic element 64 and the fourth elastic element.

[0083] In one specific embodiment of this application, the first waste area and the second waste area are connected as a whole to form a waste area. That is, after the pre-assembled double doors are punched to construct two doors, a waste area is punched off from the outer panel 10 of the door. The left and right parts of the waste area are the first waste area and the second waste area, respectively.

[0084] The present invention also proposes a processing method for pre-assembled double doors.

[0085] According to the pre-assembled double door processing method of the present invention, a door outer panel 10, a first door frame 2, a first door inner panel 3, a second door frame, and a second door inner panel are prefabricated; the first door inner panel 3 and the first door frame 2 are installed on the first outer panel portion 1 of the door outer panel 10; the second door inner panel and the second door frame are installed on the second outer panel portion 5 of the door outer panel 10; and the first edge-wrapping area 12 and the second edge-wrapping area 52 of the door outer panel 10 are simultaneously edge-wrapped.

[0086] Specifically, the first door inner panel 3 and the first door frame 2 are installed on the first outer panel portion 1 of the door outer panel 10, and the second door inner panel and the second door frame are installed on the second outer panel portion 5 of the door outer panel 10 to improve the structural strength of the door. In one specific embodiment, the first door frame 2 is first welded to the first door inner panel 3 and then placed on the first outer panel portion 1. The second door frame is then welded to the second door inner panel and then placed on the second outer panel portion 5. This not only improves the structural strength of the door but also facilitates the installation of other door components on the first and second door inner panels to meet the functional requirements of the door. Simultaneously, the first edge-sealing area 12 and the second edge-sealing area 52 of the door outer panel 10 are folded to complete the edge-sealing operation, which can better maintain the appearance consistency of the door and improve its aesthetics.

[0087] According to the processing method of the pre-assembled double doors of the present invention, the first edge-sealing area 12 and the second edge-sealing area 52 of the outer door panel 10 are simultaneously edge-sealed, and the middle plate portion 9 of the outer door panel 10 is simultaneously punched, which facilitates the cutting and separation of the first edge-sealing area 12 and the second edge-sealing area 52 with the same size and shape, which can better improve the consistency of the appearance of the door and enhance the aesthetics of the whole vehicle.

[0088] According to the processing method of the pre-assembled double doors of the present invention, after the middle plate portion 9 of the outer door panel 10 is punched simultaneously, the third edge area 13 and the fourth edge area 53 of the outer door panel 10 are folded. At the same time, the third edge area 13 and the fourth edge area are folded in the same process to better ensure the quality and effect of folding, as well as the consistency of appearance, which is beneficial to the aesthetics of the whole vehicle.

[0089] According to the processing method of the pre-assembled double doors of the present invention, the first edge-wrapping area 12 and the second edge-wrapping area 52 of the outer door panel 10 are simultaneously edge-wrapped. The method further includes: simultaneously adapting the first edge-wrapping area 12 to cover the first protrusion 31 of the inner door panel 3 and adapting the second edge-wrapping area 52 to cover the second protrusion of the inner door panel. When the pre-assembled double doors are processed to construct two symmetrical doors, the first protrusion 31 and the second protrusion can better prevent the movement and deformation generated during the edge-wrapping process, better improve the stability and quality of the edge-wrapping, and improve the aesthetics of the doors and the overall production quality of the automobile.

[0090] According to the processing method of the pre-assembled double door of the present invention, the third edge-sealing area 13 and the fourth edge-sealing area 53 after folding are rolled. It is understood that the third edge-sealing area 13 and the fourth edge-sealing area 53 may not be neat and beautiful after folding. Therefore, the third edge-sealing area 13 and the fourth edge-sealing area 53 after folding need to be further processed, for example, by further bending or rolling with other tools, so as to complete the edge-sealing operation of the third edge-sealing area 13 and the fourth edge-sealing area 53.

[0091] Other components and operations of the pre-assembled vehicle door according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0092] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pre-assembled double door, characterized in that, include: The outer door panel (10), the first door frame (2), the inner door panel (3), the second door frame, and the inner door panel. The outer panel of the car door (10) includes a first outer panel portion (1) and a second outer panel portion (5); The first door frame (2) and the first door inner panel (3) are both fixedly connected to the first outer panel (1); The second door frame and the second door inner panel are both fixedly connected to the second outer panel (5). The first outer panel (1) includes a first door body area (11) and a first edge area (12). The first edge area (12) surrounds the outer periphery of the first door body area (11). The first door frame (2) and the first door inner panel (3) are both fixedly connected to the first door body area (11). The first edge area (12) is adapted to be folded from the outer periphery of the first door inner panel (3) to the side of the first door inner panel (3) away from the first door frame (2). The second outer panel (5) includes a second door body area (51) and a second edge area (52). The second edge area (52) surrounds the outer periphery of the second door body area (51). The second door frame and the second door inner panel are both fixedly connected to the second door body area (51). The second edge area (52) is adapted to be folded from the outer periphery of the second door inner panel to the side of the second door inner panel away from the second door frame.

2. The pre-assembled double door according to claim 1, characterized in that, A first protrusion (31) is provided on the side of the first door inner panel (3) away from the first door frame (2), and the first edge area (12) is adapted to cover the first protrusion (31); The second door inner panel has a second protrusion on the side away from the second door frame, and the second edge area (52) is adapted to cover the second protrusion.

3. The pre-assembled double door according to claim 2, characterized in that, The first convex bulge (31) and the second convex bulge are symmetrically arranged along the central axis (X) of the outer panel of the door (10).

4. The pre-assembled double door according to claim 1, characterized in that, The outer door panel (10) also includes a middle panel (9) located between the first outer panel (1) and the second outer panel (5), and the middle panel (9) is adapted to be cut to separate the first outer panel (1) and the second outer panel (5).

5. The pre-assembled double door according to claim 4, characterized in that, The intermediate plate portion (9) has a first punching area adjacent to the first outer plate portion (1). The first punching area includes a third edge-binding area (13) adjacent to the first outer plate portion (1) and a first scrap area away from the first outer plate portion (1). The first scrap area is suitable for punching. The third edge-binding area (13) is suitable for folding from the outer periphery of the first door inner plate (3) to the side of the first door inner plate (3) away from the first door frame (2). The intermediate plate portion (9) has a second punching area adjacent to the second outer plate portion (5). The second punching area includes a fourth edge-binding area (53) adjacent to the second outer plate portion (5) and a second scrap area away from the second outer plate portion (5). The second scrap area is suitable for punching. The fourth edge-binding area (53) is suitable for folding from the outer periphery of the second door inner plate to the side of the second door inner plate away from the second door frame.

6. A processing apparatus for processing pre-assembled double doors according to any one of claims 1-5, characterized in that, include: The frame is equipped with slide rails that extend in the vertical direction; Mounting plate, which can be movably mounted on the frame, and the mounting plate is provided with a slider adapted to the slide rail; A drive mechanism, mounted on the frame, for driving the mounting plate to move up and down; The first door mold (4) includes a first upper mold (41), a first lower mold (42) and a first edge-sealing assembly. The first upper mold (41) is located on the side of the first door inner panel (3) away from the first door frame (2). The first lower mold (42) is located on the side of the first outer panel (1) away from the first door frame (2). The first edge-sealing assembly is disposed between the first upper mold (41) and the first lower mold (42). The first edge-sealing assembly is adapted to perform edge-sealing operations on the first outer panel (1). The second door mold includes a second upper mold, a second lower mold, and a second edge-wrapping assembly. The second upper mold is located on the side of the inner panel of the second door away from the second door frame, and the second lower mold is located on the side of the outer panel (5) away from the second door frame. The second edge-wrapping assembly is disposed between the second upper mold and the second lower mold and is adapted to perform edge-wrapping operations on the second outer panel (5). Both the first upper mold (41) and the second upper mold are mounted on the mounting plate.

7. The processing equipment for pre-assembled double doors according to claim 6, characterized in that, It also includes a punching assembly disposed on the first door mold (4) and / or the second door mold, the punching assembly being adapted to punch the middle plate portion (9) of the outer door panel (10) to separate the first outer plate portion (1) and the second outer plate portion (5).

8. The processing equipment for pre-assembled double doors according to claim 7, characterized in that, The first upper mold (41) and the second upper mold are fixedly connected to form an upper template, and the first lower mold (42) and the second lower mold are fixedly connected to form a lower template. The blanking assembly includes a first blanking assembly (6), which includes: The first floating edge cutting blade (61) is movably mounted on the lower side of the upper template; The first elastic element (62) is installed between the first floating cutting blade (61) and the upper template in the vertical direction; The first lower die-cutting flip-blade block (63) is movably mounted on the upper side of the lower template and is vertically opposite to the first floating edge cutting blade (61). The first floating edge cutting blade (61) is adapted to move toward the first lower die-cutting flip-blade block (63) to punch the middle plate portion (9).

9. The processing equipment for pre-assembled double doors according to claim 8, characterized in that, The first punching assembly (6) further includes: The second elastic element (64) is installed between the first lower die cutting and flipping block (63) and the first lower die (42) in the vertical direction.

10. The processing equipment for pre-assembled double doors according to claim 8, characterized in that, The intermediate plate portion (9) has a first punching area adjacent to the first outer plate portion (1), the first punching area including a third edge-binding area (13) adjacent to the first outer plate portion (1) and a first scrap area away from the first outer plate portion (1). The upper side of the first lower die-cutting blade block (63) has a first region (631) and a second region (632). The first region (631) is opposite to the third edge-binding region (13), and the second region (632) is opposite to the first waste area. The first floating edge-cutting blade (61) is vertically opposite to the second region (632) to punch the first waste area. The first punching assembly (6) further includes a first driving member adapted to drive the first lower die-cutting flipper block (63) to move so as to fold the third edge-binding area (13) opposite to the first area (631) upward.

11. The processing equipment for pre-assembled double doors according to claim 8, characterized in that, The blanking assembly includes a second blanking assembly, the second blanking assembly comprising: The second floating edge cutting blade is movably mounted on the lower side of the upper template; The second lower die-cutting flipper block is movably mounted on the upper side of the lower template and is vertically opposite to the second floating edge cutting blade. The second floating edge cutting blade is adapted to move toward the second lower die-cutting flipper block to punch the intermediate plate portion (9). The first floating edge cutting blade (61) and the second floating edge cutting blade are disposed on opposite sides of the same blade body in the left-right direction, or the first floating edge cutting blade (61) and the second floating edge cutting blade are disposed separately. The second punching assembly also includes a third elastic element, which is installed between the second floating cutting blade and the upper template in the vertical direction.

12. The processing equipment for pre-assembled double doors according to claim 11, characterized in that, The first lower die-cutting flipper block (63) and the second lower die-cutting flipper block are fixedly connected to form a lower die-cutting block, or, The first lower die cutting and flipping block (63) and the second lower die cutting and flipping block are separately arranged. The second punching assembly further includes a fourth elastic element, which is installed between the second lower die cutting and flipping block and the second lower die in the vertical direction.

13. The processing equipment for pre-assembled double doors according to claim 11, characterized in that, The intermediate plate portion (9) has a second punching area adjacent to the second outer plate portion (5), the second punching area including a fourth edge-binding area (53) adjacent to the second outer plate portion (5) and a second scrap area away from the second outer plate portion (5). The upper side of the second lower die-cutting blade block has a third region and a fourth region. The third region is opposite to the fourth edge-wrapping region (53), and the fourth region is opposite to the second waste area. The second floating edge-cutting blade is vertically opposite to the fourth region to punch the second waste area.

14. The processing equipment for pre-assembled double doors according to claim 13, characterized in that, The second die-cutting assembly further includes a second drive member adapted to drive the second lower die-cutting flip block to fold the fourth edge region (53) opposite to the third region upward.

15. A processing method for pre-assembled double doors, characterized in that, The processing equipment for pre-assembled double doors according to any one of claims 6-14, the processing method for the pre-assembled double doors comprising: Prefabricated door outer panel (10), first door frame (2), first door inner panel (3), second door frame and second door inner panel; The first door inner panel (3) and the first door frame (2) are installed on the first outer panel part (1) of the door outer panel (10). The second door inner panel and the second door frame are installed on the second outer panel part (5) of the door outer panel (10); Simultaneously perform edge binding operations on the first edge binding area (12) and the second edge binding area (52) of the outer panel (10) of the car door.

16. The processing method for pre-assembled double doors according to claim 15, characterized in that, The simultaneous edge-sealing operation on the first edge-sealing area (12) and the second edge-sealing area (52) of the outer door panel (10) further includes: The synchronization makes the first edge area (12) suitable for covering the first protrusion (31) of the inner panel of the first door (3) and the second edge area (52) suitable for covering the second protrusion of the inner panel of the second door.

17. The processing method for pre-assembled double doors according to claim 15, characterized in that, After simultaneously performing edge-wrapping operations on the first edge-wrapping area (12) and the second edge-wrapping area (52) of the outer door panel (10), the process further includes: Simultaneously, the middle plate (9) of the outer door panel (10) is punched.

18. The processing method for pre-assembled double doors according to claim 17, characterized in that, After the synchronous punching operation on the middle plate portion (9) of the outer door panel (10), the process includes: The third edge area (13) and the fourth edge area (53) of the outer door panel (10) are folded over.

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