Fan-shaped plate bending process

Abstract

The application discloses a kind of fan-shaped plate bending process, plate includes main body, first bending part, second bending part and two third bending parts, main body is fan-shaped, plate is processed by stamping device, multiple first deformation grooves are stamped out at first bending part, multiple first deformation grooves are arranged along the length direction of first bending part, multiple second deformation grooves are stamped out at second bending part, multiple second deformation grooves are arranged along the length direction of second bending part, the plate that stamping is completed is placed in bending device and is bent, first deformation groove gradually contracts when bending at first bending part, second deformation groove gradually expands when bending at second bending part, the whole plate is stamped and bent to form three-dimensional fan-shaped plate in the application, and the structure strength of plate made is higher.

Description

Technical Field

[0001] This invention relates to the field of sheet metal bending technology, and more specifically, to a fan-shaped sheet metal bending process. Background Technology

[0002] In existing technologies, aluminum alloy panels are widely used in curtain wall decoration. Aluminum alloy panels are cut, bent, and riveted. Existing fan-shaped curtain wall panels are made by splicing a fan-shaped flat plate and multiple side plates. The splicing method is welding or riveting. The structure of the fan-shaped curtain wall panel composed of splicing is relatively weak, and cracks or loosening may occur at the splicing points. Therefore, a technical solution is needed to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a fan-shaped panel bending process by forming a stronger wall panel through integral bending of the panel.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention discloses a bending process for a fan-shaped plate, comprising the following steps:

[0006] S1, cut out a board, the board including a main body, a first bent part, a second bent part and two third bent parts, the main body is fan-shaped, the first bent part is located at the large diameter arc of the main body, the second bent part is located at the small diameter arc of the main body, and the two third bent parts are respectively located at both ends of the main body;

[0007] S2, the plate is processed by a stamping device, the plate is fixed to the clamping assembly of the stamping device, and the first bending part and the second bending part are stamped by the stamping die of the stamping device. Multiple first deformation grooves are stamped at the first bending part, and the multiple first deformation grooves are arranged along the length direction of the first bending part. Multiple second deformation grooves are stamped at the second bending part, and the multiple second deformation grooves are arranged along the length direction of the second bending part.

[0008] S3, the stamped plate is placed in the bending device for bending. The second upper die and the second lower die of the bending device are brought close together and pressed together. The main body is placed on the upper surface of the second lower die. The second upper die presses down to bend the first bending part and the second bending part. The first deformation groove gradually closes when the first bending part is bent, and the second deformation groove gradually expands when the second bending part is bent.

[0009] S4, bend the two third bends, bending the third bends in the direction of the first bend and the second bend.

[0010] Furthermore, the plate includes an inner surface and an outer surface, and the first bent portion, the second bent portion and the third bent portion are bent toward the inner surface.

[0011] Furthermore, the stamping die includes a first upper die and a first lower die. The first upper die is provided with a pressure block, and the first lower die is provided with a pressure groove corresponding to the pressure block. The pressure block is triangular pyramidal. The pressure block and the pressure groove press together to deform the first bending portion or the second bending portion, thereby forming the first deformation groove or the second deformation groove.

[0012] Furthermore, the pressing block includes a pressing edge, which is inclined in the vertical direction, with one end of the pressing edge inclined toward the direction close to the first lower mold, and the opening size of the first deformation groove or the second deformation groove expanding toward the direction away from the main body.

[0013] Furthermore, the clamping assembly includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate clamp the plate, the boundary between the main body and the first bent portion is a first bending line, the boundary between the main body and the second bent portion is a second bending line, and the edges of the first clamping plate and the second clamping plate are aligned with the first bending line or the second bending line.

[0014] Furthermore, the fixture assembly for stamping the first bent portion in step S2 includes a telescopic rod, a motor, and a slide rail. The first clamping plate is provided with a fixed frame, and the fixed frame is equipped with a pressure column. The pressure column presses the second clamping plate and the first clamping plate together. The first clamping plate is connected to the telescopic rod, and the telescopic rod is connected to the motor. The rotation shaft of the motor coincides with the center of the plate. The motor is installed on the slide rail, and the motor can move closer to or further away from the stamping die.

[0015] Furthermore, the second upper mold includes an upper mold body and a pressure plate, the pressure plate and the upper mold body being slidably connected. When the second upper mold presses down to bend the first bent portion and the second bent portion, the pressure plate presses against the upper end face of the main body.

[0016] Furthermore, the upper mold body has a guide channel, the pressure plate has a guide plate, the guide plate passes through the guide channel, the end of the guide plate away from the pressure plate has a limiting plate, and multiple springs are installed between the pressure plate and the upper mold body. The multiple springs are arranged along the length of the pressure plate and are distributed on both sides of the guide plate.

[0017] Furthermore, the upper mold body includes a bending groove, which opens toward the second lower mold. The two side walls of the bending groove form a first bending surface and a second bending surface. The first bending surface bends the first bent portion, and the second bending surface bends the second bent portion. The lower ends of the two sides of the second lower mold are inclined close to each other.

[0018] Furthermore, the first folded surface includes a first arc surface and a first straight surface, with the first straight surface located at the upper end of the first arc surface; the second folded surface includes a second arc surface and a second straight surface, with the second straight surface located at the upper end of the second arc surface.

[0019] The beneficial effects of this invention are:

[0020] This invention forms a three-dimensional fan-shaped plate by stamping and bending a whole sheet of plate. The plate is processed by a stamping device, and multiple first deformation grooves are stamped at the first bending part and multiple second deformation grooves are stamped at the second bending part. The stamped plate is placed in a bending device for bending. The first deformation grooves gradually close when bending at the first bending part, and the second deformation grooves gradually expand when bending at the second bending part, so that the finished plate has higher structural strength, is easier to process, and has higher production efficiency. Attached Figure Description

[0021] Figure 1 This is an initial schematic diagram of the plate component in this embodiment.

[0022] Figure 2 This is a schematic diagram of the plate after bending in this embodiment.

[0023] Figure 3 This is a schematic diagram of a stamping device used for stamping the first bending section in this embodiment.

[0024] Figure 4 for Figure 3 A side view of a stamping device.

[0025] Figure 5 This is a schematic diagram of the bending device in this embodiment.

[0026] Figure 6 This is a cross-sectional view of the bending device in its initial state in this embodiment.

[0027] Figure 7 This is a cross-sectional view of the bending device bending a plate in this embodiment.

[0028] Reference numerals: 1. Plate; 11. Main body; 111. First bending line; 112. Second bending line; 12. First bending section; 121. First deformation groove; 13. Second bending section; 131. Second deformation groove; 14. Third bending section; 101. Inner surface; 102. Outer surface; 2. Stamping device; 21. Stamping die; 211. First upper die; 2111. Pressing block; 21111. Pressing edge; 212. First lower die; 2121. Pressing groove; 22. Fixture assembly; 221. First clamping plate; 2211. Fixing frame; 22 12. Pressure column; 222. Second clamping plate; 223. Telescopic rod; 224. Motor; 225. Slide rail; 3. Bending device; 31. Second upper die; 311. Upper die body; 3111. Bending groove; 3112. First pressing and bending surface; 31121. First arc surface; 31122. First straight surface; 3113. Second pressing and bending surface; 31131. Second arc surface; 31132. Second straight surface; 3114. Guide channel; 312. Pressure plate; 3121. Guide plate; 3122. Limiting plate; 313. Spring; 32. Second lower die. Detailed Implementation

[0029] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 7 As shown, this embodiment discloses a fan-shaped plate bending process, which uses a stamping device and a bending device to bend plate 1 from... Figure 1 bending process in the middle Figure 2 The state in.

[0031] like Figure 1 , Figure 2As shown, the plate in this embodiment includes a main body 11, a first bent portion 12, a second bent portion 13, and two third bent portions 14. The main body 11, the first bent portion 12, and the second bent portion 13 are fan-shaped. The first bent portion 12 is formed by extending outward from the large-radius arc of the main body 11, and the second bent portion 13 is formed by extending outward from the small-radius arc of the main body 11. The two third bent portions 14 are flat plates extending outward in a straight line. The boundary between the main body 11 and the first bent portion 12 is the first bending line 111. The first bent portion 12 needs to be... The first bending line 111 is used for bending. The boundary between the main body 11 and the second bending part 13 is the second bending line 112. The second bending part 13 needs to be bent along the second bending line 112. The width of the third bending part 14 is smaller than the width of the main body 11. The width of the third bending part 14 is smaller than the width of the main body 11 by the thickness of two main bodies 11. This allows the two third bending parts 14 to enter between the first bending part 12 and the second bending part 13 after bending, thus improving the edge strength of the first bending part 12 and the second bending part 13 after bending.

[0032] The plate 1 includes an inner surface 101 and an outer surface 102. The first bend 12, the second bend 13 and the third bend 14 are bent toward the inner surface 101. After bending, the first bend 12, the second bend 13 and the third bend 14 form a sidewall around the edge of the main body 11.

[0033] like Figures 1-4 As shown, in order to enable the first bending portion 12 and the second bending portion 13 to be bent, and because the fan-shaped first bending portion 12 and the second bending portion 13 would break during the bending process if they were directly pressed, this embodiment processes the first bending portion 12 and the second bending portion 13 with a first deformation groove 121 and a second deformation groove 131 that can be deformed. The first deformation groove 121 and the second deformation groove 131 are processed by the stamping die 21 of the stamping device 2.

[0034] like Figure 3As shown, the stamping die 21 includes a first upper die 211 and a first lower die 212. The first upper die 211 is provided with a pressure block 2111, and the first lower die 212 is provided with a pressure groove 2121 corresponding to the pressure block 2111. The pressure block 2111 is triangular pyramidal in shape and includes a pressure edge 21111. The pressure edge 21111 is inclined in the vertical direction, with one end of the pressure edge 21111 inclined towards the direction close to the first lower die 212. The pressure edge 21111 is provided with rounded corners to prevent the edge from being too sharp and causing damage to the sheet metal 1 during stamping. Plate 1 is placed on the upper end face of the first lower die 212. The first upper die 211 presses downward to stretch and deform the part being punched. The pressure block 2111 and the pressure groove 2121 press together to deform the first bent part 12 and the second bent part 13, thereby forming the first deformation groove 121 and the second deformation groove 131. The opening size of the first deformation groove 121 and the second deformation groove 131 expands in the direction away from the main body 11. The first deformation groove 121 and the second deformation groove 131 are also in the shape of corresponding triangular pyramids and extend towards the inner surface 101. The direction protrudes, forming an outwardly expanding recess on the outer surface 102. The thickness of the first deformation groove 121 and the second deformation groove 131 decreases. When the first bending portion 12 is bent, the first deformation groove 121, due to bending the planar fan-shaped first bending portion 12 into an arc-shaped side panel, the large diameter edge of the first bending portion 12 will decrease during the bending process. The opening of the first deformation groove 121 will deform and shrink during the bending process. The first deformation groove 121 with reduced thickness is easier to deform. When the second bending portion 13 is bent, the small diameter edge of the second bending portion 13 gradually expands during the bending process. The second deformation groove 131 will deform and expand during the bending process, and the wall thickness of the second deformation groove 131 portion is thinner, making it easier for the second bending portion 13 to deform during bending. The setting of the first deformation groove 121 and the second deformation groove 131 makes the first bending portion 12 and the second bending portion 13 more smoothly during bending, and prevents breakage during bending.

[0035] like Figure 3 , Figure 4As shown, the fixture assembly 22 used in processing the first bent portion 12 includes a first clamping plate 221, a second clamping plate 222, a telescopic rod 223, a motor 224, and a slide rail 225. The first clamping plate 221 and the second clamping plate 222 clamp the plate 1. The first clamping plate 221 is provided with multiple fixing brackets 2211, and the fixing brackets 2211 are equipped with pressure columns 2212. The pressure columns 2212 are threaded onto the fixing brackets 2211. The fixing brackets 2211 extend above the first clamping plate 221. The plate 1 is placed between the first clamping plate 221 and the second clamping plate 222. The edges of the first clamping plate 221 and the second clamping plate 222 are aligned with the first bending line 111. The pressure columns 2212 press the second clamping plate 222 and the first clamping plate 221 together to clamp the plate 1, preventing the first bent portion 12 from deforming the main body 11 during the stamping process. The first bending portion 12 is exposed towards the stamping die 21. The first clamping plate 221 is connected to the telescopic rod 223. The telescopic rod 223 is used to adjust the distance between the plate 1 and the stamping die 21. The telescopic rod 223 is connected to the motor 224 through the mounting base. The mounting base has the function of lifting up and down, and can lift the plate 1 after each stamping. The rotating shaft of the motor 224 coincides with the center of the plate 1. The motor 224 can adjust the angle of the first bending portion 12 after each stamping, so that the first deformation groove 121 of the stamping can be distributed along the arc length of the first bending portion 12. The motor 224 is mounted on the slide rail 225. The motor 224 can move closer to or further away from the stamping die 21. The distance between the motor 224 and the stamping die 21 can be adjusted according to the radius of different first bending portions 12 so that the first bending portion 12 can be better adapted to the stamping die 21.

[0036] When processing the second bend 13, the clamping assembly 22 used for processing the first bend 12 cannot be used. However, the first clamping plate 221 and the second clamping plate 222 are still needed to clamp and fix the plate 1. Similarly, the first clamping plate 221 and the second clamping plate 222 need to be aligned with the second bend line 112 to prevent the second bend 13 from deforming the main body 11 during the stamping process.

[0037] like Figures 5-7 As shown, the second upper mold 31 includes an upper mold body 311 and a pressure plate 312. The upper mold body 311 includes a bending groove 3111, which opens toward the second lower mold 32. The pressure plate 312 is slidably connected to the upper mold body 311. The pressure plate 312 is located within the projection range of the bending groove 3111. The pressure plate 312 can press down on the two arc-shaped edges of the main body 11. When the second upper mold 31 presses down to bend the first bending part 12 and the second bending part 13, the pressure plate 312 presses down on the upper end face of the main body 11, so that the main body 11 will not deform when the first bending part 12 and the second bending part 13 are bent.

[0038] More preferably, the upper mold body 311 has a guide channel 3114, the pressure plate 312 has a guide plate 3121, the guide plate 3121 passes through the guide channel 3114, and the end of the guide plate 3121 away from the pressure plate 312 has a limiting plate 3122. Multiple springs 313 are installed between the pressure plate 312 and the upper mold body 311, arranged along the length of the pressure plate 312, and distributed on both sides of the guide plate 3121. The second upper mold... 31 In the initial state, the lower end face of the pressure plate 312 is flush with or lower than the lower end face of the upper mold body 311, so that the pressure plate 312 can press down the main body 11 before the upper mold body 311 contacts the first bending part 12 and the second bending part 13. When the second upper mold 31 is in the pressing state, the pressure plate 312 is in the bending groove 3111, and the lower end face of the pressure plate 312 is higher than the first arc surface 31121 and the second arc surface 31131.

[0039] Plate 1 is placed on the upper end face of the second lower die 32, with the outer surface 102 of plate 1 facing upwards. The first deformation groove 121 and the second deformation groove 131 protrude downwards. The two side walls of the bending groove 3111 form a first bending surface 3112 and a second bending surface 3113. The first bending surface 3112 bends the first bent portion 12. The first bending surface 3112 includes a first arc surface 31121 and a first straight surface 31122. The first straight surface 31122 is located at the upper end of the first arc surface 31121. During the downward pressing process of the second upper die 31, the lower end of the first arc surface 31121 of the first bending surface 3112 will contact the outer end of the first bent portion 12, causing it to bend downwards. During the downward pressing process, the contact position between the first bending surface 3112 and the first bent portion 12 is... The object gradually moves along the first arc surface 31121 to the first straight surface 31122. Finally, the first bent portion 12 is folded by the first straight surface 31122. Similarly, the second folding surface 3113 folds the second bent portion 13. The second folding surface 3113 includes the second arc surface 31131 and the second straight surface 31132. The second straight surface 31132 is located at the upper end of the second arc surface 31131. The second folding surface 3113 also folds the second bent portion 13. The first folding surface 3112 and the second folding surface 3113 can gradually fold from the outside to the inside of the first bent portion 12 and the second bent portion 13, so that the folding process can be transitioned and prevent the first deformation groove 121 and the second deformation groove 131 from deforming and breaking instantly due to excessive instantaneous pressure.

[0040] The lower ends of the two sides of the second lower die 32 are inclined close to each other. The upper end face of the second lower die 32 is the part with the largest width of the second lower die 32. The side wall of the inwardly contracting second lower die 32 can avoid the first deformation groove 121 and the second deformation groove 131 after bending, so as to prevent interference. After the first bending part 12 and the second bending part 13 are bent, the plate 1 can be pulled out from the side of the second lower die 32 along the circumferential direction of the second lower die 32.

[0041] In this embodiment, the bending process of sheet metal 1 using stamping device 2 and bending device 3 is as follows:

[0042] S1, cut a plate 1 from a whole piece of aluminum alloy sheet. The plate 1 includes a main body 11, a first bent part 12, a second bent part 13 and two third bent parts 14. The main body 11 is fan-shaped. The first bent part 12 is located at the large diameter arc of the main body 11, the second bent part 13 is located at the small diameter arc of the main body 11, and the two third bent parts 14 are located at the two ends of the main body 11 respectively.

[0043] S2, the plate 1 is processed by the stamping device 2. The plate 1 is fixed to the clamp assembly 22 of the stamping device 2. The first bending part 12 and the second bending part 13 are stamped by the stamping die 21 of the stamping device 2. Multiple first deformation grooves 121 are stamped at the first bending part 12. The multiple first deformation grooves 121 are arranged along the length direction of the first bending part 12. Multiple second deformation grooves 131 are stamped at the second bending part 13. The multiple second deformation grooves 131 are arranged along the length direction of the second bending part 13.

[0044] S3, the stamped plate 1 is placed in the bending device 3 for bending. The second upper die 31 and the second lower die 32 of the bending device 3 are brought close together for pressing. The main body 11 is placed on the upper end face of the second lower die 32. The second upper die 31 presses down to bend the first bending part 12 and the second bending part 13. The first deformation groove 121 gradually closes when the first bending part 12 is bent, and the second deformation groove 131 gradually expands when the second bending part 13 is bent.

[0045] S4, bend the two third bends 14, the third bends 14 bend in the bending direction of the first bend 12 and the second bend 13. The plate 1 includes an inner surface 101 and an outer surface 102, the first bend 12, the second bend 13 and the third bend 14 bend toward the inner surface 101.

[0046] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A bending process for a fan-shaped plate, characterized in that, Includes the following steps: S1, cut out a plate (1), the plate (1) includes a main body (11), a first bent part (12), a second bent part (13) and two third bent parts (14), the main body (11) is fan-shaped, the first bent part (12) is located at the large diameter arc of the main body (11), the second bent part (13) is located at the small diameter arc of the main body (11), and the two third bent parts (14) are located at the two ends of the main body (11) respectively; S2, the plate (1) is processed by the stamping device (2), the plate (1) is fixed to the clamp assembly (22) of the stamping device (2), and the first bending part (12) and the second bending part (13) are stamped by the stamping die (21) of the stamping device (2). Multiple first deformation grooves (121) are stamped at the first bending part (12), and the multiple first deformation grooves (121) are arranged along the length direction of the first bending part (12). Multiple second deformation grooves (131) are stamped at the second bending part (13), and the multiple second deformation grooves (131) are arranged along the length direction of the second bending part (13). S3, the stamped plate (1) is placed in the bending device (3) for bending. The second upper die (31) and the second lower die (32) of the bending device (3) are pressed together. The main body (11) is placed on the upper end face of the second lower die (32). The second upper die (31) presses down to bend the first bending part (12) and the second bending part (13). The first deformation groove (121) gradually closes when the first bending part (12) is bent, and the second deformation groove (131) gradually expands when the second bending part (13) is bent. The second upper mold (31) includes an upper mold body (311) and a pressure plate (312). The pressure plate (312) and the upper mold body (311) are slidably connected. When the second upper mold (31) presses down to bend the first bent part (12) and the second bent part (13), the pressure plate (312) presses against the upper end face of the main body (11). The upper mold body (311) has a guide groove (3114), the pressure plate (312) has a guide plate (3121), the guide plate (3121) passes through the guide groove (3114), the end of the guide plate (3121) away from the pressure plate (312) has a limiting plate (3122), and a plurality of springs (313) are installed between the pressure plate (312) and the upper mold body (311). The plurality of springs (313) are arranged along the length direction of the pressure plate (312), and the springs (313) are distributed on both sides of the guide plate (3121). The upper mold body (311) includes a bending groove (3111), which opens toward the second lower mold (32). The two side walls of the bending groove (3111) form a first bending surface (3112) and a second bending surface (3113). The first bending surface (3112) bends the first bent portion (12), and the second bending surface (3113) bends the second bent portion (13). The lower ends of the two sides of the second lower mold (32) are inclined close to each other. The first folded surface (3112) includes a first arc surface (31121) and a first straight surface (31122), the first straight surface (31122) being located at the upper end of the first arc surface (31121); the second folded surface (3113) includes a second arc surface (31131) and a second straight surface (31132), the second straight surface (31132) being located at the upper end of the second arc surface (31131); S4, bend the two third bends (14), and bend the third bends (14) in the bending direction of the first bend (12) and the second bend (13).

2. The bending process for a fan-shaped plate according to claim 1, characterized in that, The plate (1) includes an inner surface (101) and an outer surface (102), and the first bent portion (12), the second bent portion (13) and the third bent portion (14) are bent toward the inner surface (101).

3. The bending process for a fan-shaped plate according to claim 1, characterized in that, The stamping die (21) includes a first upper die (211) and a first lower die (212). The first upper die (211) is provided with a pressure block (2111), and the first lower die (212) is provided with a pressure groove (2121) corresponding to the pressure block (2111). The pressure block (2111) is a triangular pyramid shape. The pressure block (2111) and the pressure groove (2121) press together the first bent part (12) or the second bent part (13) to deform and form the first deformation groove (121) or the second deformation groove (131).

4. The bending process for a fan-shaped plate according to claim 3, characterized in that, The pressure block (2111) includes a pressure edge (21111), which is inclined in the vertical direction. One end of the pressure edge (21111) is inclined toward the direction close to the first lower mold (212), and the opening size of the first deformation groove (121) or the second deformation groove (131) is expanded in the direction away from the main body (11).

5. The bending process for a fan-shaped plate according to claim 1, characterized in that, The clamping assembly (22) includes a first clamping plate (221) and a second clamping plate (222), which clamp the plate (1). The boundary between the main body (11) and the first bent portion (12) is a first bending line (111), and the boundary between the main body (11) and the second bent portion (13) is a second bending line (112). The edges of the first clamping plate (221) and the second clamping plate (222) are aligned with the first bending line (111) or the second bending line (112).

6. The bending process for a fan-shaped plate according to claim 5, characterized in that, The fixture assembly (22) for stamping the first bent part (12) in step S2 includes a telescopic rod (223), a motor (224), and a slide rail (225). The first clamping plate (221) is provided with a fixing frame (2211). The fixing frame (2211) is equipped with a pressure column (2212). The pressure column (2212) presses the second clamping plate (222) and the first clamping plate (221) together. The first clamping plate (221) is connected to the telescopic rod (223). The telescopic rod (223) is connected to the motor (224). The rotating shaft of the motor (224) coincides with the center of the plate (1). The motor (224) is installed on the slide rail (225). The motor (224) can move closer to or further away from the stamping die (21).

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