A bending device for processing the shell of a prefabricated substation

Abstract

This invention provides a bending device for processing prefabricated substation shells, belonging to the field of steel plate bending technology. The bending device includes a machine tool and a worktable mounted on the machine tool. The machine tool has a fixed frame and further includes two sets of support mechanisms, bending mechanisms, and cleaning mechanisms symmetrically arranged around the worktable. The support mechanisms include two sets of guide plates rotatably mounted on the fixed frame. Through the cooperation of the support mechanisms and bending mechanisms on the upper and lower sides of the worktable, the sheet metal can be bent quickly on both sides without flipping. Simultaneously, the surface of the sheet metal remains in contact with the support plates during bending, avoiding scratches and irregular wrinkles caused by friction between the sheet metal and the bottom mold. Furthermore, the device can dynamically adjust the bottom mold support force and bending angle to adapt to different bending requirements and bending compensation.

Description

Technical Field

[0001] This invention belongs to the field of steel plate bending technology, specifically relating to a bending device for processing the shell of a prefabricated substation. Background Technology

[0002] As a key structure protecting the internal electrical equipment, the enclosure of a prefabricated substation must possess excellent mechanical strength, protective performance, and weather resistance. Its processing quality directly affects the overall safety and service life of the substation. The enclosure is typically made of metal materials such as steel plates through processes such as cutting, bending, and welding. Among these processes, bending is the core step in shaping the enclosure's structural form, directly determining the dimensional accuracy of each component, the sealing performance of connections, and the overall structural stability.

[0003] Chinese patent CN115446162A discloses a double-bending device for steel plates, comprising two bending assemblies, two die base assemblies, and a first driving mechanism. Each bending assembly includes a bending seat and a spring assembly. The two bending seats are staggered vertically, with the steel plate placed on the lower bending seat. A V-shaped bending head is provided on the opposite side of each bending seat. One end of each spring assembly is fixedly connected to the bottom or top of the corresponding bending seat. Each die base assembly includes a support base and a die groove assembly. The two support bases are respectively positioned directly above or below the corresponding V-shaped bending head. This device allows for simultaneous reverse bending of both ends of the steel plate, eliminating the need to flip the plate over for re-bending and improving bending efficiency.

[0004] However, the above technical solution still has the following problems: since the part of the sheet that needs to be bent is suspended and there is no auxiliary support, when the sheet is stamped and bent, the surface of the sheet is prone to wrinkles, scratches or excessive springback due to excessive local stress, which seriously affects the aesthetics and quality of the product; at the same time, due to impurities on the bending device and the sheet, the surface of the sheet is prone to dents or indentations when bending. Summary of the Invention

[0005] The purpose of this invention is to provide a bending device for processing box-type substation shells, which aims to solve the problem in the prior art that the surface of sheet metal is prone to wrinkles, indentations or excessive springback when bending sheet metal due to excessive force.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bending device for processing the shell of a prefabricated substation, comprising: a machine tool and a worktable disposed on the machine tool, wherein a fixed frame is disposed inside the machine tool, and further comprising:

[0007] The support mechanism is installed on the fixed frame. Two sets of support mechanisms are symmetrically arranged with the worktable as the boundary. The support mechanism includes two sets of guide plates that are rotatably installed on the fixed frame. The upper surface of the guide plates is slidably connected to the support plates. When the two sets of guide plates rotate downwards to the side closer to each other, the support plates move closer together and are arranged in a V shape. When they rotate in the opposite direction, the support plates move away from each other. Torsion springs are provided on both sides of the guide plates to reset the rotation of the guide plates.

[0008] The bending mechanism is set inside the fixed frame. Two sets of bending mechanisms are symmetrically arranged with the worktable as the boundary. The bending mechanism includes a punch that moves up and down along the inside of the fixed frame. The punch is set between the two sets of support plates.

[0009] The cleaning mechanism is set on a fixed frame. Two sets of cleaning mechanisms are symmetrically arranged with the workbench as the boundary. The cleaning mechanism includes a lifting frame and a dust removal component. The lifting frame slides up and down on the fixed frame. The lifting frame is equipped with a torsion mechanism. When the lifting frame moves up and down, the guide plate is rotated through the torsion mechanism, and the equipment and the board are cleaned through the dust removal component.

[0010] A further technical solution of the present invention is that the dust removal assembly includes a cleaning roller, a first dust removal device and a second dust removal device. The cleaning roller is horizontally arranged on the two sides adjacent to the torsion mechanism on the fixed frame. The first dust removal device is arranged below the cleaning roller. A first vent is provided on the side of the first dust removal device near the placement plate. The second dust removal device is arranged on the side of the guide plate near the punch. A second vent is provided on the side of the second dust removal device near the punch. A brush that can contact the punch is arranged above the second vent.

[0011] A further technical solution of the present invention is that two sets of placement plates are installed inside the fixed frame, the placement plates are spaced apart, a rotating shaft is provided at the bottom of the guide plate, the guide plate is rotatably mounted on the placement plate through the rotating shaft, a torsion spring is provided on the rotating shaft, and the two ends of the torsion spring are respectively connected to the guide plate and the fixed frame, and the upper surface of the support plate is flush with the upper surface of the worktable.

[0012] A further technical solution of the present invention is that a spring is installed on the bottom surface of the support plate along its moving direction, the other end of the spring is connected to the guide plate, guide grooves are provided on both sides of the fixed frame along the vertical direction, and sliding columns that can slide up and down along the inside of the guide grooves are respectively provided at both ends of the two support plates on the side that are close to each other.

[0013] A further technical solution of the present invention is that a first hydraulic cylinder capable of driving the punch to move up and down is installed inside the fixed frame, so that the punch moves closer to or away from the support plate. When the punch moves closer to the support plate, it can contact the bottom surface of the two support plates on the side with the closest side.

[0014] A further technical solution of the present invention is that the fixed frame is provided with an elongated groove along the moving direction of the lifting frame, and a second hydraulic cylinder for driving the lifting frame to move up and down is installed inside the fixed frame.

[0015] A further technical solution of the present invention is that the torsion mechanism includes a guide block and a guide rod. The guide block is disposed at the ends of both sides of the rotating shaft, and the guide rod is disposed on both sides of the lifting frame near the guide block. When the guide rod moves upward, it contacts the guide block and pushes it to drive the two guide plates to rotate and move away from each other.

[0016] A further technical solution of the present invention is that the surfaces of both the brush and the cleaning roller are made of flexible material.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Through the cooperation of the support mechanism and bending mechanism on the upper and lower sides of the workbench, the sheet material can be bent quickly on both sides without flipping it over. At the same time, the surface of the sheet material is always in contact with the support plate during bending, avoiding scratches and irregular wrinkles caused by friction between the sheet material and the bottom mold during bending. It can also dynamically adjust the bottom mold support force and bending angle to adapt to different bending requirements and bending compensation.

[0019] 2. By setting up a cleaning mechanism, the bending workpiece and the surface of the sheet can be cleaned during the bending process, preventing impurities from adhering after multiple bending of a sheet and causing defects on the sheet surface. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of a specific embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the fixing frame in a specific embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the fixed frame in a specific embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the cooperation structure between the fixing frame and the support plate in a specific embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the bending mechanism and the support mechanism in a specific embodiment of the present invention;

[0027] Figure 7This is a schematic diagram of the guide plate structure in a specific embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the cooperation structure between the guide plate and the support plate in a specific embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the installation structure of the cleaning mechanism in a specific embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the lifting frame in a specific embodiment of the present invention.

[0031] In the diagram: 1. Machine tool; 11. Fixed frame; 12. Guide groove; 2. Worktable; 3. Support mechanism; 31. Placement plate; 32. Guide plate; 33. Rotary shaft; 34. Torsion spring; 35. Support plate; 36. Spring; 37. Sliding column; 38. Guide block; 4. Bending mechanism; 41. Punch; 42. First hydraulic cylinder; 5. Cleaning mechanism; 51. Lifting frame; 52. Second hydraulic cylinder; 53. Guide rod; 54. Cleaning roller; 55. First dust removal device; 56. First vent; 57. Second dust removal device; 58. Second vent; 59. Brush. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention 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.

[0033] Please see Figures 1-10 The present invention provides the following technical solution: a bending device for processing box-type substation shells, comprising a machine tool 1, a worktable 2, a support mechanism 3, a bending mechanism 4, and a cleaning mechanism 5;

[0034] Machine tool 1 is placed horizontally on the ground, and worktable 2 is set on machine tool 1. The support mechanism 3, bending mechanism 4, and cleaning mechanism 5 are all designed with a symmetrical layout. Each set of mechanisms has two sets, and the worktable 2 serves as the dividing line between upper and lower parts. The upper surface of the lower support mechanism 3 is flush with the upper surface of the worktable 2. The worker places the sheet material to be processed on the worktable 2, and the support mechanism 3 contacts the bottom surface of the sheet material. The bending mechanism 4 is located below the support mechanism 3. The bending mechanism 4 applies external force to the sheet material to perform the bending operation. When a downward bend is required, the upper bending mechanism 4 moves downward, and the upper surface of the lower support mechanism 3 concaves downward synchronously with the movement of the bending mechanism 4, forming a groove. The upper surface of the support mechanism 3 always contacts the sheet material and provides support, ensuring the quality of the sheet material during bending. The lower bending mechanism 4 contacts the support mechanism 3 and provides auxiliary support. It can also adjust the bending angle and compensation amount. The principle is the same when bending upwards and downwards. The cleaning mechanism 5 is located inside the machine tool 1 and is used to clean impurities from the support mechanism 3, bending mechanism 4 and the surface of the sheet metal during operation.

[0035] Please see Figures 3-8 The machine tool 1 has a fixed frame 11 inside, and a placement plate 31 is installed inside the fixed frame 11. There are two sets of placement plates 31, and the two sets of placement plates 31 are arranged at intervals. The support mechanism 3 is set on the fixed frame 11. The support mechanism 3 includes a guide plate 32 rotatably mounted on the upper end of the placement plate 31. A rotating shaft 33 is set at the bottom of the guide plate 32, and the rotating shaft 33 is mounted on the upper end of the placement plate 31 so that the guide plate 32 can rotate along its fixed axis. Two sets of torsion springs 34 are set on both sides of the rotating shaft 33. The two ends of the torsion springs 34 are respectively connected to the guide plate 32 and the fixed frame 11. When the torsion springs 34 are not under force, they can keep the upper surface of the guide plate 32 in a horizontal state. A support plate 35 is slidably connected to the upper surface of the guide plate 32. The two support plates 35 can slide closer or further apart relative to each other. The upper surface of the support plate 35 is flush with the upper surface of the worktable 2. A spring 36 is installed on the bottom surface of the support plate 35 along its moving direction. The other end of the spring 36 is connected to the guide plate 32. The spring 36 keeps the relative position of the support plate 35 and the guide plate 32 fixed when no force is applied. Guide grooves 12 are provided on both sides of the fixed frame 11 along the vertical direction. The guide grooves 12 are located above the inner wall of the fixed frame 11. Sliding columns 37 are respectively provided at both ends of the side of the two support plates 35 that are close to each other. The sliding columns 37 can slide up and down along the inside of the guide groove 12. When the torsion spring 34 is not subjected to external force, the upper surface of the support plate 35 remains horizontal, so that the sliding column 37 is exactly located at the upper end of the inside of the guide groove 12.

[0036] When the two guide plates 32 rotate downwards synchronously on their closest side under the action of an external force, the sliding column 37 moves vertically downwards along the guide groove 12, and the two support plates 35 slide along the guide plates 32 towards the closest side. At this time, the two support plates 35 are arranged in a V-shape, and the relative position of the sliding column 37 on the two support plates 35 remains unchanged. When the two guide plates 32 rotate upwards synchronously on their closest side, the sliding column 37 can disengage from the top of the guide groove 12, causing the guide plates 32 to move away from each other. Finally, without external force intervention, the guide plates 32 and support plates 35 return to their initial state through the combined action of the torsion spring 34 and the spring 36.

[0037] Please see Figure 4 , Figure 6 and Figure 9 The bending mechanism 4 includes a punch 41 disposed inside the fixed frame 11. The punch 41 is disposed between two placement plates 31. The punch 41 can move up and down along the inside of the fixed frame 11. A first hydraulic cylinder 42 is installed inside the fixed frame 11. The output end of the first hydraulic cylinder 42 is connected to the punch 41. The punch 41 is driven to move up and down towards or away from the support plate 35 by the first hydraulic cylinder 42. In the initial state, the top of the punch 41 is in contact with the bottom surface of the side end of the two support plates 35 that is close to each other.

[0038] During bending, the sheet metal is first placed on the lower support plate 35. As the upper punch 41 moves downwards, the upper support plate 35 rotates and moves away from the sheet metal, then moves downwards to contact and press it against the sheet metal. Simultaneously, the lower support plate 35 pushes the sliding column 37 vertically downwards along the guide groove 12. At this time, the lower support plate 35 acts as a bending bottom mold to support the sheet metal being processed, ensuring the sheet metal is bent to the specified angle. The lower punch 41 moves downwards along with the rotation of the support plate 35, providing auxiliary support to the bottom of the lower support plate 35. Furthermore, the up-and-down adjustment of the lower punch 41 can meet the bending requirements of different angles of the sheet metal and compensate for materials with large springback, ensuring proper bending. The lower support plate 35 deforms and bends along with the sheet metal, ensuring that the upper surface of the support plate 35 is always in contact with the lower surface of the sheet metal. This avoids the problems of uneven stress, wrinkles, and scratches caused by the bottom of the sheet metal being suspended during bending in traditional bending equipment.

[0039] Please see Figure 3 , Figures 8-10The cleaning mechanism 5 includes a lifting frame 51 that slides up and down on a fixed frame 11. The fixed frame 11 is provided with a long groove along the moving direction of the lifting frame 51 to ensure that the lifting frame 51 moves up and down normally. A second hydraulic cylinder 52 is installed inside the fixed frame 11. The output end of the second hydraulic cylinder 52 is connected to the lifting frame 51, and the lifting frame 51 is driven to move up and down through the second hydraulic cylinder 52. The lifting frame 51 is equipped with a torsion mechanism, which includes a guide block 38 and a guide rod 53. The guide block 38 is located at the ends of both sides of the rotating shaft 33, and the rotating shaft 33 is located outside the fixed frame 11. The guide rod 53 is located on both sides of the lifting frame 51 near the guide block 38, and the guide rod 53 is located directly below the guide block 38. When the lifting frame 51 moves upward, the guide rod 53 moves upward to contact the guide block 38 and pushes it to rotate, thereby driving the two guide plates 32 to rotate synchronously and move away from each other. Finally, the guide plates 32 rotate to the outside of the two placement plates 31 and are in a vertical state. The fixed frame 11 is equipped with a dust removal assembly, which includes a cleaning roller 54 and a first dust removal device 55. In this embodiment, two sets of cleaning rollers 54 are provided. The cleaning rollers 54 are horizontally arranged on the two sides of the fixed frame 11 adjacent to the guide rod 53. The surface of the cleaning roller 54 is made of a flexible material. The flexible material can be rubber, silicone, sponge, nylon filament or flexible fiber, etc., which have a certain elasticity and deformation ability to avoid wear on the support plate 35 during cleaning. The first dust removal device 55 is located below the cleaning roller 54. The first dust removal device 55 has a first ventilation port 56 on the side near the placement plate 31. Dust removal can be performed by drawing air or blowing air through the first ventilation port 56.

[0040] When the bending mechanism 4 begins to bend upwards, the lifting frame 51 moves upwards, driving the guide rod 53 to move upwards, which in turn pushes the guide block 38 to rotate, causing the two support plates 35 to move away from each other until they are in a vertical state. At this time, the lifting frame 51 continues to move upwards, and the cleaning roller 54 can just contact the upper surface of the support plate 35 and clean the impurities on its surface. Subsequently, the first dust removal device 55 contacts the upper surface of the support plate 35, and removes the impurities on the upper surface of the support plate 35 that were not completely removed by the cleaning roller 54 through the blowing or exhaust of the first ventilation port 56, ensuring that the upper surface of the support plate 35 remains clean when bending downwards, and preventing the adhering impurities from affecting the processing quality during bending. After the bending is completed, the lifting frame 51 moves downwards, and after the guide rod 53 disengages from the guide block 38, the support plate 35 returns to a horizontal state under the action of the torsion spring 34.

[0041] Please see Figure 4 , Figure 6 and Figure 7The dust removal assembly also includes a second dust removal device 57, which is located on the side of the guide plate 32 near the punch 41. The second dust removal device 57 has a second vent 58 on the side of the second dust removal device 57 near the punch 41. Dust removal can be performed by drawing or blowing air through the second vent 58. A brush 59 is located above the second vent 58 and can contact the punch 41. The brush 59 is made of a flexible material, such as rubber, silicone, sponge, nylon filament, or flexible fiber, which has a certain elasticity and deformation capacity to avoid wear on the punch 41 during cleaning.

[0042] The working principle of the second dust removal device 57 is similar to that of the first dust removal device 55. When impurities adhere to the surface of the punch 41, the punch 41 is moved upward. At this time, the adhering impurities are removed by the combined action of the brushes 59 on both sides of the punch 41 and the second vent 58. When impurities adhere to the surface of the sheet metal, the cleaning mechanism 5 drives the guide plate 32 to rotate, so that the second vent 58 is aimed at the position of the sheet metal to be bent and blows air to remove impurities from the sheet metal. This ensures that the punch 41, the support plate 35, and the surface of the sheet metal can all remain clean when the bending mechanism 4 is working, thus guaranteeing the processing quality.

Claims

1. A bending device for processing the shell of a prefabricated substation, comprising: A machine tool (1) and a worktable (2) mounted on the machine tool (1), wherein a fixed frame (11) is provided inside the machine tool (1), characterized in that it further includes: Support mechanism (3) is installed on fixed frame (11). Support mechanism (3) is symmetrically arranged in two sets with the workbench (2) as the boundary. Support mechanism (3) includes two sets of guide plates (32) rotatably installed on fixed frame (11). Support plate (35) is slidably connected to the upper surface of guide plate (32). When the two sets of guide plates (32) rotate downwards to the side closer to each other, the support plate (35) moves closer and is set in a V shape. When rotating in the opposite direction, the support plates (35) move away from each other. Torsion springs (34) are provided on both sides of guide plate (32) to reset the rotation of guide plate (32). The bending mechanism (4) is set inside the fixed frame (11). The bending mechanism (4) is symmetrically arranged in two sets with the workbench (2) as the boundary. The bending mechanism (4) includes a punch (41) that moves up and down along the inside of the fixed frame (11). The punch (41) is set between the two sets of support plates (35). Cleaning mechanism (5) is set on fixed frame (11). Two sets of cleaning mechanism (5) are symmetrically arranged with the workbench (2) as the boundary. Cleaning mechanism (5) includes lifting frame (51) and dust removal component. Lifting frame (51) slides up and down on fixed frame (11). Lifting frame (51) is provided with torsion mechanism. When lifting frame (51) moves up and down, guide plate (32) is rotated through torsion mechanism and the equipment and board are cleaned through dust removal component. The fixed frame (11) has two sets of placement plates (31) installed inside. The placement plates (31) are spaced apart. The bottom of the guide plate (32) is provided with a rotating shaft (33). The guide plate (32) is rotatably mounted on the placement plate (31) through the rotating shaft (33). The torsion spring (34) is set on the rotating shaft (33). The two ends of the torsion spring (34) are connected to the guide plate (32) and the fixed frame (11) respectively. The upper surface of the support plate (35) is flush with the upper surface of the worktable (2). A spring (36) is installed on the bottom surface of the support plate (35) along its moving direction. The other end of the spring (36) is connected to the guide plate (32). Guide grooves (12) are provided on both sides of the fixed frame (11) along the vertical direction. The guide grooves (12) are located above the inner wall of the fixed frame (11) and penetrate the bottom surface of the fixed frame (11). Sliding columns (37) that can slide up and down along the inside of the guide grooves (12) are respectively provided at both ends of the two support plates (35) on the side that are close to each other.

2. The bending device for processing the shell of a prefabricated substation according to claim 1, characterized in that: The dust removal assembly includes a cleaning roller (54), a first dust removal device (55), and a second dust removal device (57). The cleaning roller (54) is horizontally arranged on the two sides adjacent to the torsion mechanism on the fixed frame (11). The first dust removal device (55) is arranged below the cleaning roller (54). The first dust removal device (55) is provided with a first vent (56) on the side near the placement plate (31). The second dust removal device (57) is arranged on the side of the guide plate (32) near the punch (41). The second dust removal device (57) is provided with a second vent (58) on the side near the punch (41). A brush (59) that can contact the punch (41) is arranged above the second vent (58).

3. The bending device for processing the shell of a prefabricated substation according to claim 1, characterized in that: The fixed frame (11) is equipped with a first hydraulic cylinder (42) that can drive the punch (41) to move up and down, so that the punch (41) moves closer to or away from the support plate (35). When the punch (41) moves closer to the support plate (35), it can contact the bottom surface of the two support plates (35) on the side that are close to each other.

4. The bending device for processing the shell of a prefabricated substation according to claim 1, characterized in that: The fixed frame (11) is provided with a long groove along the moving direction of the lifting frame (51), and a second hydraulic cylinder (52) is installed inside the fixed frame (11) to drive the lifting frame (51) to move up and down.

5. A bending device for processing a prefabricated substation shell according to claim 4, characterized in that: The torsion mechanism includes a guide block (38) and a guide rod (53). The guide block (38) is located at the ends of both sides of the rotating shaft (33), and the guide rod (53) is located on both sides of the lifting frame (51) near the guide block (38). When the guide rod (53) moves upward, it contacts the guide block (38) and pushes it to drive the two guide plates (32) to rotate and move away from each other.

6. A bending device for processing a prefabricated substation shell according to claim 2, characterized in that: The surfaces of the brush (59) and the cleaning roller (54) are both made of flexible material.

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