Bending device for processing box-type substation shell

Abstract

The invention provides a bending device for box-type substation shell machining, and belongs to the technical field of steel plate bending. The bending device for box-type substation shell machining comprises a machine tool and a workbench arranged on the machine tool, and a fixing frame is arranged in the machine tool; the two supporting mechanisms, the two bending mechanisms and the two cleaning mechanisms are symmetrically arranged with the workbench as the boundary, and each supporting mechanism comprises two guide plates rotationally installed on the fixing frame; through cooperation of the supporting mechanism and the bending mechanism on the upper side and the lower side of the workbench, the two sides of a plate can be rapidly bent on the premise that the plate is not turned over, and meanwhile the surface of the plate makes contact with the supporting plate all the time during bending, so that scratches and irregular wrinkles possibly caused by friction between the plate and a bottom die during bending are avoided; and meanwhile, the supporting force and the bending angle of the bottom die can be dynamically adjusted, and different bending requirements and bending compensation can be met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel plate bending, and particularly relates to a bending device for box-type substation shell machining. BACKGROUND

[0002] The shell of a box-type substation, as a key structure for protecting internal electrical equipment, needs to have good mechanical strength, protection performance and weather resistance, and the machining quality thereof directly affects the overall safety and service life of the substation. The shell is usually made of metal materials such as steel plates through processes such as cutting, bending and welding, among which the bending process is a core link for shaping the structure of the shell and directly determines the dimensional accuracy, connection sealing performance and overall structural stability of the shell components.

[0003] A steel plate up-down double-bending device is disclosed in a Chinese patent with the authorization announcement No. CN115446162A, which comprises two bending assemblies, two die seat assemblies and a first driving mechanism. Each of the bending assemblies comprises a bending seat and a spring assembly. The two bending seats are staggered up and down, and the bending seat at the lower position is used for placing a steel plate. Each of the V-shaped bending heads is arranged on the side away from the other V-shaped bending head. One end of each of the spring assemblies is fixedly connected with the bottom or the top of the corresponding bending seat. Each of the die seat assemblies comprises a support seat and a die groove assembly. The two support seats are arranged directly above or below the corresponding V-shaped bending head. The two ends of the steel plate can be simultaneously reversely bent without turning over the steel plate for re-bending, thereby improving the bending efficiency.

[0004] However, the above technical solution still has the following problems. Since the position of the plate to be bent is suspended and lacks auxiliary support, the surface of the plate is prone to wrinkles, scratches or excessive rebound due to excessive local stress when the plate is subjected to stamping and bending, which seriously affects the appearance and quality of the product. At the same time, impurities exist on the bending device and the plate, which causes the surface of the plate to be prone to concave or indentation when bent. SUMMARY

[0005] The purpose of the present application is to provide a bending device for box-type substation shell machining, which aims to solve the problem of wrinkles, indentation or excessive rebound of the plate surface due to excessive stress when the plate is bent in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a bending device for box-type substation shell machining, comprising a machine tool and a workbench arranged on the machine tool, wherein the machine tool is provided with a fixed frame, and further comprising: Supporting mechanism, installed on the fixed frame, the supporting mechanism is symmetrical with two groups with the workbench as the boundary, the supporting mechanism includes two groups of guide plates rotatably installed on the fixed frame, the upper surface of the guide plate is slidably connected with the supporting plate, when the two groups of guide plates rotate towards the lower side of the close side, the supporting plate is close and arranged in V shape, and when the reverse rotation makes the supporting plate away from each other, the guide plate is provided with a torsional spring for resetting the rotation of the guide plate; Bending mechanism, arranged inside the fixed frame, the bending mechanism is symmetrical with two groups with the workbench as the boundary, the bending mechanism includes a punch moving up and down along the inside of the fixed frame, the punch is arranged between the two groups of supporting plates; Cleaning mechanism, arranged on the fixed frame, the cleaning mechanism is symmetrical with two groups with the workbench as the boundary, the cleaning mechanism includes a lifting frame and a dust removal assembly, the lifting frame slides up and down on the fixed frame, the torsion mechanism is arranged on the lifting frame, the lifting frame moves up and down to rotate the guide plate through the torsion mechanism, and the equipment and the plate are cleaned through the dust removal assembly.

[0007] Further technical solutions of the present application are 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 of the torsion mechanism adjacent to the fixed frame, the first dust removal device is arranged below the cleaning roller, the first dust removal device is provided with a first air vent close to the side of the placing plate, the second dust removal device is arranged on the side of the guide plate close to the punch, the second dust removal device is provided with a second air vent close to the side of the punch, and a brush capable of contacting the punch is arranged above the second air vent.

[0008] Further technical solutions of the present application are that the fixed frame is internally provided with two groups of placing plates, the placing plates are arranged at intervals, the bottom of the guide plate is provided with a rotating shaft, the guide plate is rotatably installed on the placing plate through the rotating shaft, the torsional spring is arranged on the rotating shaft, the two ends of the torsional spring are connected with the guide plate and the fixed frame respectively, and the upper surface of the supporting plate is flush with the upper surface of the workbench.

[0009] Further technical solutions of the present application are that the bottom surface of the supporting plate is provided with a spring along the moving direction of the supporting plate, the other end of the spring is connected with the guide plate, the fixed frame is provided with a guide groove in the vertical direction on both sides, and the two ends of the side close to each other of the two supporting plates are respectively provided with a sliding column capable of sliding up and down in the guide groove.

[0010] Further technical solutions of the present application are that the fixed frame is internally provided with a first hydraulic cylinder capable of driving the punch to move up and down, so that the punch is close to or away from the supporting plate, and when the punch is close to the supporting plate, the lower bottom surface of the side close to each other of the two supporting plates can be contacted.

[0011] Further technical solutions of the present application are that the fixed frame is provided with a long groove along the moving direction of the lifting frame, and the fixed frame is internally provided with a second hydraulic cylinder driving the lifting frame to move up and down.

[0012] Further technical solutions of the present application are that the torsion mechanism comprises guide blocks and guide rods, the guide blocks are arranged at the ends of the two sides of the rotating shaft, and the guide rods are arranged at the two sides of the lifting frame close to the guide blocks.

[0013] Further technical solutions of the present application are that the surfaces of the brush and the cleaning roller are made of flexible materials.

[0014] Compared with the prior art, the present application has the following beneficial effects: 1. Through the cooperation of the supporting mechanism and the bending mechanism on the upper and lower sides of the workbench, the plate can be quickly bent on both sides without turning over, and the surface of the plate is in contact with the supporting plate at all times during bending to avoid scratches and irregular wrinkles caused by friction between the plate and the bottom die during bending; at the same time, the supporting force of the bottom die and the bending angle can be dynamically adjusted to adapt to different bending requirements and bending compensation.

[0015] 2. By setting the cleaning mechanism, the surface of the bent workpiece and the plate can be cleaned during the bending process, preventing impurities from adhering to the surface of the plate after multiple bending of a plate. DETAILED DESCRIPTION

[0016] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings: Figure 1 It is the overall structure schematic diagram of the specific embodiment in the present application; Figure 2 It is the internal structure schematic diagram of the specific embodiment in the present application; Figure 3 It is the structure schematic diagram of the fixed frame of the specific embodiment in the present application; Figure 4 It is the internal structure schematic diagram of the fixed frame of the specific embodiment in the present application; Figure 5 It is the cooperation structure schematic diagram of the fixed frame and the supporting plate of the specific embodiment in the present application; Figure 6 It is the structure schematic diagram of the bending mechanism and the supporting mechanism of the specific embodiment in the present application; Figure 7 It is the structure schematic diagram of the guide plate of the specific embodiment in the present application; Figure 8 It is the cooperation structure schematic diagram of the guide plate and the supporting plate of the specific embodiment in the present application; Figure 9 It is the installation structure schematic diagram of the cleaning mechanism of the specific embodiment in the present application; Figure 10 The structure schematic diagram of the lifting frame for the specific embodiment in the present application.

[0017] In the figure: 1, machine tool; 11, fixed frame; 12, guide groove; 2, workbench; 3, supporting mechanism; 31, placing plate; 32, guide plate; 33, rotating shaft; 34, torsional spring; 35, supporting 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 ventilation opening; 57, second dust removal device; 58, second ventilation opening; 59, brush. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0019] Please refer to Figures 1-10 The present application provides the following technical solutions: a bending device for machining a box-type substation shell, comprising a machine tool 1, a workbench 2, a supporting mechanism 3, a bending mechanism 4 and a cleaning mechanism 5. The machine tool 1 is horizontally placed on the ground, the workbench 2 is arranged on the machine tool 1, the supporting mechanism 3, the bending mechanism 4 and the cleaning mechanism 5 are all designed in a symmetrical layout, each group of mechanisms is provided with two sets, and is divided into upper and lower parts with the workbench 2 as a boundary. The upper end surface of the lower supporting mechanism 3 is flush with the upper surface of the workbench 2, a worker places a plate to be machined on the workbench 2, the supporting mechanism 3 is in contact with the bottom surface of the plate, the bending mechanism 4 is arranged below the supporting mechanism 3, and the plate is bent by exerting an external force on the plate through the bending mechanism 4. When downward bending is needed, the upper bending mechanism 4 moves downward, the upper end surface of the lower supporting mechanism 3 is concave downward synchronously with the movement of the bending mechanism 4, a concave groove is formed, the upper end surface of the supporting mechanism 3 is always in contact with the plate and supports the plate, so that the quality of the plate during bending is ensured. The lower bending mechanism 4 is in contact with the supporting mechanism 3 and provides auxiliary support, can adjust the bending angle and the compensation amount, and has the same principle when bending upward and downward. The cleaning mechanism 5 is arranged inside the machine tool 1 and is used for cleaning impurities on the supporting mechanism 3, the bending mechanism 4 and the surface of the plate during work.

[0020] Please refer to Figures 3-8The machine tool 1 is internally provided with a fixed frame 11, the fixed frame 11 is internally mounted with a placing plate 31, the placing plate 31 is provided with two groups and the two groups of placing plates 31 are spaced apart. The support mechanism 3 is arranged on the fixed frame 11, the support mechanism 3 comprises a guide plate 32 rotatably arranged on the upper end of the placing plate 31, the bottom of the guide plate 32 is provided with a rotating shaft 33, and the rotating shaft 33 is arranged on the upper end of the placing plate 31 so that the guide plate 32 can rotate along the rotating shaft 33 as a fixed shaft, and two groups of torsional springs 34 are arranged on both sides of the rotating shaft 33, the two ends of the torsional spring 34 are respectively connected with the guide plate 32 and the fixed frame 11, and the torsional spring 34 can keep the upper surface of the guide plate 32 in a horizontal state when not subjected to force. The guide plate 32 is slidably connected with a support plate 35, the two support plates 35 can slide relative to each other to approach or move away, the upper surface of the support plate 35 is flush with the upper surface of the workbench 2, and the bottom surface of the support plate 35 is provided with a spring 36 along the moving direction of the support plate 35, and the other end of the spring 36 is connected with the guide plate 32, so that the relative position between the support plate 35 and the guide plate 32 is kept fixed by the spring 36 when not subjected to force. The fixed frame 11 is provided with a guide groove 12 in the vertical direction on both sides, and the guide groove 12 is arranged above the inner wall of the fixed frame 11, and the two ends of the side close to each other of the two support plates 35 are respectively provided with a sliding column 37, which can slide up and down in the guide groove 12, and when the torsional spring 34 is not subjected to external force, the upper surface of the support plate 35 remains horizontal, and the sliding column 37 is located at the upper end of the guide groove 12.

[0021] When the two guide plates 32 are synchronously rotated downward on the side close to each other under the action of external force, the sliding column 37 moves vertically downward along the guide groove 12, and the two support plates 35 slide along the guide plate 32 to the side close to each other, at this time, the two support plates 35 are arranged in a V shape, and the relative position of the sliding columns 37 on the two support plates 35 remains unchanged. When the two guide plates 32 are synchronously rotated upward on the side close to each other, the sliding column 37 can be disconnected from the top of the guide groove 12 to make the guide plates 32 move away from each other, and finally the guide plates 32 and the support plates 35 are restored to the initial state through the joint action of the torsional spring 34 and the spring 36 without external intervention.

[0022] Please refer to Figure 4 、 Figure 6 and Figure 9 , the bending mechanism 4 comprises a punch 41 arranged in the fixed frame 11, the punch 41 is arranged between the two placing plates 31, the punch 41 can move up and down in the fixed frame 11, a first hydraulic cylinder 42 is mounted in the fixed frame 11, the output end of the first hydraulic cylinder 42 is connected with the punch 41, the punch 41 is driven by the first hydraulic cylinder 42 to move up and down to approach or move away from the support plate 35, and in the initial state, the top end of the punch 41 is in contact with the lower bottom surface of the end of the two support plates 35 close to each other.

[0023] When bending, first place the plate on the lower support plate 35, move the upper punch 41 down at the same time, and rotate the upper support plate 35 away from each other, then move down to contact and extrude the plate, and push the lower support plate 35 to move the slide column 37 vertically down along the guide groove 12, at this time the lower support plate 35 acts as a bending bottom die for supporting the processed plate, ensuring that the plate is bent to the specified angle, the lower punch 41 can move down with the rotation of the support plate 35, for auxiliary support at the bottom of the lower support plate 35, and through the up and down adjustment of the lower punch 41, the bending of the plate at different angles can be met, and the bending compensation of the material with large rebound can be carried out, to ensure that the bending is in place. The upper surface of the support plate 35 is in contact with the lower surface of the plate at all times, avoiding the problems of uneven stress, wrinkles, scratches and other problems caused by the plate bending position suspended at the bottom in the traditional bending equipment.

[0024] Please refer to Figure 3 、 Figures 8-10 , the cleaning mechanism 5 includes a lifting frame 51 sliding up and down on the fixed frame 11, the fixed frame 11 is provided with a long slot along the moving direction of the lifting frame 51 to ensure the normal up and down movement of the lifting frame 51, and the fixed frame 11 is internally provided with a second hydraulic cylinder 52, the output end of the second hydraulic cylinder 52 is connected with the lifting frame 51, and the lifting frame 51 is driven to move up and down by the second hydraulic cylinder 52. A torsion mechanism is arranged on the lifting frame 51, the torsion mechanism includes guide blocks 38 and guide rods 53, the guide blocks 38 are arranged at the ends on both sides of the rotating shaft 33, and the rotating shaft 33 is located outside the fixed frame 11, the guide rods 53 are arranged on both sides of the lifting frame 51 close to the guide blocks 38, and the guide rods 53 are located directly below the guide blocks 38, when the lifting frame 51 moves upward, the guide rods 53 move upward to contact the guide blocks 38 and push them to rotate, thereby driving the two guide plates 32 to rotate synchronously and away from each other, finally making the guide plates 32 rotate to the outside of the two placing plates 31 and present a vertical state, a dust removal assembly is arranged on the fixed frame 11, the dust removal assembly includes cleaning rollers 54 and first dust removal devices 55, in the embodiment, the cleaning rollers 54 are provided with two groups, the cleaning rollers 54 are horizontally arranged on the two sides of the fixed frame 11 adjacent to the guide rods 53, and the surface of the cleaning rollers 54 is made of a flexible material, which can be selected from rubber, silicone, sponge, nylon wire or flexible fiber, etc. The material has certain elasticity and deformation ability, which can avoid abrasion of the support plate 35 during cleaning. The first dust removal device 55 is arranged below the cleaning roller 54, and the first dust removal device 55 is provided with a first air vent 56 close to one side of the placing plate 31, which can be used for dust removal by suction or blowing.

[0025] When the bending mechanism 4 starts to bend upward, the lifting frame 51 moves upward and drives the guide rod 53 to move upward, and then pushes the guide block 38 to rotate, so that the two support plates 35 move away from each other until they are in a vertical state. At this time, the lifting frame 51 continues to move upward, and the cleaning roller 54 can just contact the upper surface of the support plate 35 and clean the impurities on the surface. Then the first dust removal device 55 contacts the upper surface of the support plate 35, and blows or sucks through the first air vent 56 to remove the impurities on the upper surface of the support plate 35 that are not completely removed by the cleaning roller 54, so as to ensure that the upper surface of the support plate 35 is clean when bending downward, preventing the adhered impurities from affecting the processing quality when bending. After the bending is completed, the lifting frame 51 moves downward, and the guide rod 53 is disengaged from the guide block 38, and the support plate 35 returns to the horizontal state under the action of the torsional spring 34.

[0026] Please refer to Figure 4 、 Figure 6 and Figure 7 , the dust removal assembly further comprises a second dust removal device 57, which is arranged on one side of the guide plate 32 close to the punch 41. The second dust removal device 57 is provided with a second air vent 58 close to the punch 41, which can blow or suck to remove dust. A brush 59 is arranged above the second air vent 58, which can contact the punch 41. The brush 59 is made of flexible material, which can be selected from rubber, silicone, sponge, nylon wire or flexible fiber, etc. which has certain elasticity and deformation ability, to avoid scratching the punch 41 during cleaning.

[0027] The working principle of the second dust removal device 57 is similar to that of the first dust removal device 55. When the punch 41 is adhered with impurities, the punch 41 is moved upward, and the adhered impurities are removed by the combined action of the brushes 59 on both sides of the punch 41 and the second air vent 58. When the plate surface is adhered with impurities, the cleaning mechanism 5 drives the guide plate 32 to rotate, so that the second air vent 58 blows the position of the plate to be bent to remove the impurities on the plate, so that the punch 41, the support plate 35 and the plate surface can be kept clean when the bending mechanism 4 works, to ensure the processing quality.

Claims

1. A bending device for processing a box-type substation shell, comprising: A machine tool (1) and a workbench (2) arranged on the machine tool (1), wherein a fixed frame (11) is arranged in the machine tool (1), and is characterized in that it further comprises: A support mechanism (3) is mounted on the fixed frame (11), and the support mechanism (3) is symmetrically arranged with the workbench (2) as the boundary. The support mechanism (3) includes two groups of guide plates (32) rotatably mounted on the fixed frame (11), and the upper surface of the guide plate (32) is slidably connected to the support plate (35). When the two groups of guide plates (32) rotate downward toward the near side, the support plates (35) are close to each other and are arranged in a V shape. When rotating in the opposite direction, the support plates (35) are moved away from each other. Torsion springs (34) for resetting the rotation of the guide plates (32) are arranged on both sides of the guide plates (32); A bending mechanism (4) is arranged inside the fixed frame (11), and the bending mechanism (4) is symmetrically arranged in two groups 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), and the punch (41) is arranged between the two groups of support plates (35); A cleaning mechanism (5) is provided on the fixed frame (11). The cleaning mechanism (5) is symmetrically provided with two groups with the workbench (2) as the boundary. The cleaning mechanism (5) includes a lifting frame (51) and a dust removal component. The lifting frame (51) slides up and down on the fixed frame (11). A torsion mechanism is provided on the lifting frame (51). When the lifting frame (51) moves up and down, the torsion mechanism rotates the guide plate (32), and the dust removal component cleans the equipment and the plate.

2. A bending device for processing a box-type substation shell according to claim 1, characterized in that: The dust removal assembly comprises a cleaning roller (54), a first dust removal device (55) and a second dust removal device (57), wherein the cleaning roller (54) is horizontally arranged on two side surfaces adjacent to the torsion mechanism on the fixed frame (11), the first dust removal device (55) is arranged below the cleaning roller (54), a first vent (56) is arranged on the side of the first dust removal device (55) close to the placement plate (31), the second dust removal device (57) is arranged on the side of the guide plate (32) close to the punch (41), a second vent (58) is arranged on the side of the second dust removal device (57) close to the punch (41), and a brush (59) capable of contacting the punch (41) is arranged above the second vent (58).

3. The bending device for processing a box-type substation shell according to claim 1 is characterized in that: Two sets of placement plates (31) are installed inside the fixed frame (11). The placement plates (31) are arranged at intervals. A rotating shaft (33) is provided at the bottom of the guide plate (32). The guide plate (32) is rotatably installed on the placement plate (31) through the rotating shaft (33). A torsion spring (34) is provided on the rotating shaft (33). Both ends of the torsion spring (34) are respectively connected to the guide plate (32) and the fixed frame (11). The upper surface of the support plate (35) is flush with the upper surface of the workbench (2).

4. A bending device for processing a box-type substation shell according to claim 3, characterized in that: A spring (36) is installed on the bottom surface of the support plate (35) along its moving direction, and 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. Sliding columns (37) that can slide up and down along the inside of the guide groove (12) are respectively provided at both ends of the side where the two support plates (35) are close to each other.

5. The bending device for processing a box-type substation shell according to claim 1 is characterized in that: A first hydraulic cylinder (42) is installed inside the fixed frame (11) to drive the punch (41) to move up and down, so that the punch (41) approaches or moves away from the support plate (35). When the punch (41) approaches the support plate (35), it can contact the lower bottom surface of the end portion of one side of the two support plates (35).

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

7. The bending device for processing a box-type substation shell according to claim 6, characterized in that: The torsion mechanism comprises a guide block (38) and a guide rod (53). The guide block (38) is arranged at the ends of both sides of the rotating shaft (33). The guide rod (53) is arranged on both sides of the lifting frame (51) close to 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.

8. The bending device for processing a box-type 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 materials.

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