Bending device and bending method for long and thin metal plate

Abstract

The invention discloses a long and thin metal plate bending device and method.The bending device comprises a horizontal mounting table, a front conveying mechanism, a bending mechanism, a rear conveying mechanism and a clamping mechanism, the clamping mechanism comprises a front face clamping roller set and a back face clamping roller set, the front conveying mechanism comprises a front annular conveying belt, and the rear conveying mechanism comprises a rear annular conveying belt; the rear conveying mechanism comprises a rear annular conveying belt, a bending station is formed between the front annular conveying belt and the rear annular conveying belt, and the bending mechanism comprises a fixing roller and a pressing plate. A vertical mode is adopted, a long and thin metal plate is bent in the horizontal plane, and the occupied space of equipment is effectively saved; in the bending process of the long and thin metal plate, the front conveying belt and the rear conveying belt are adopted for conveying, positioning of a bending part cannot be affected by factors such as gravity, and the control precision of the bending process of the long and thin metal plate is improved; the long and thin metal plates are stable in state and not prone to shaking and slipping in the conveying process, and the influence of the large length on the metal plate conveying process is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of metal sheet bending, and in particular relates to a long and thin metal sheet bending device and a bending method. Background Art

[0002] Metal sheets are easy to shape and are widely used in various sheet metal structures. Small metal sheets can be bent using common bending machines. However, long and thin metal sheets are long, and existing bending equipment cannot fix them. The material is in a bent state during the bending process, and the bending positioning is inaccurate, which can easily scratch the surface of the metal sheet. Therefore, it is necessary to design a special bending device based on the characteristics of long and thin metal sheets. Summary of the invention

[0003] In order to solve the above technical problems, the technical solution adopted by the present invention is: a long thin metal sheet bending device, including a horizontal mounting platform, a front conveying mechanism, a bending mechanism, a rear conveying mechanism, and a clamping mechanism, wherein the clamping mechanism includes a front clamping roller group and a back clamping roller group, and a channel for the metal sheet to pass through is formed between the front clamping roller group and the back clamping roller group, and the front clamping roller group and the back clamping roller group are respectively composed of a plurality of clamping rollers arranged in sequence, and the clamping rollers are arranged vertically, and the front conveying mechanism includes a front annular conveyor belt located below the channel, and the front annular conveyor belt It is installed on several transmission rollers, which are arranged horizontally. The transmission rollers are driven to rotate by the driving mechanism. The rear conveying mechanism includes a rear annular conveyor belt, which is installed on several horizontally arranged driven rollers. The front annular conveyor belt and the rear annular conveyor belt are arranged in sequence. A bending station is formed between the front annular conveyor belt and the rear annular conveyor belt. The bending mechanism includes a fixed roller and a pressure plate, which are respectively located on both sides of the bending station. The fixed roller is arranged vertically, and the pressure plate is driven by a hydraulic cylinder to move horizontally from the back clamping roller group to the front clamping roller group.

[0004] As a preferred embodiment of the above technical solution, a row of evenly spaced support plates are provided on the front annular conveyor belt, one end of the support plate is fixedly connected to a fixed splint, and the other end is movably installed with a movable splint, a positioning groove is formed between the movable splint and the fixed splint, the movable splint is pulled by a spring so that the movable splint moves in a direction away from the fixed splint, a pulley is rotatably installed on the outer side of the movable splint, and a fixed slide groove for the pulley to extend into is fixedly provided on one side of the front annular conveyor belt.

[0005] As a preferred embodiment of the above technical solution, a plurality of ring chains are fixedly connected to the inner surface of the front ring conveyor belt, a plurality of gears are fixedly connected to the transmission roller, the gears are respectively engaged with the ring chains, and the driving mechanism includes a servo motor, and one of the transmission rollers is driven to rotate by the servo motor.

[0006] As a preferred embodiment of the above technical solution, the clamping mechanism includes a fixed frame fixedly connected to the horizontal mounting table, the clamping rollers in the back clamping roller group are rotatably mounted on the fixed frame, the clamping mechanism also includes a plurality of movable frames arranged in sequence, the clamping rollers in the front clamping roller group are rotatably mounted on the movable frame, the upper and lower ends of the movable frames are respectively mounted with a plurality of sliding sleeves, sliding rods are respectively inserted in the sliding sleeves, the fixed frame is provided with a plurality of movable holes for the sliding rods to movably pass through, one end of the sliding rod is fixedly connected to the limiting plate, the other end passes through the sliding sleeve and the movable hole in sequence and is threadedly connected to an adjusting nut, a spring is sleeved on the sliding rod, and the spring is clamped between the fixed frame and the corresponding movable frame.

[0007] As a preferred embodiment of the above technical solution, the fixed roller is rotatably installed on the adjusting frame, the upper end and the lower end of the adjusting frame are respectively fixedly connected with the adjusting screws, the fixed frame is provided with a plurality of movable openings for the adjusting screws to movably pass through, one end of the adjusting screw is fixedly connected to the adjusting frame, and the other end passes through the movable opening, the adjusting screw is threadedly connected with the front nut and the rear nut, and the fixed frame is clamped between the front nut and the rear nut.

[0008] As a preferred embodiment of the above technical solution, one end of the driven roller is rotatably connected to a sleeve, one end of the sleeve is hinged to a fixed frame, a tension spring is connected to the sleeve, one end of the tension spring is tilted upward and fixedly connected to the fixed frame, a plurality of gears are installed on the driven roller, and a plurality of chains that mesh with the gears are fixed on the inner surface of the rear annular conveyor belt.

[0009] As a preferred embodiment of the above technical solution, a support platform is provided on one side of the horizontal mounting platform, and the middle part of the support platform is close to the bending station.

[0010] A method for bending a long thin metal sheet, using the above-mentioned long thin metal sheet bending device, includes the following steps: standing up the long thin metal sheet, inserting it between the front clamping roller group and the back clamping roller group, so that the lower edge of the long thin metal sheet is placed on the front annular conveyor belt; the front annular conveyor belt drives the long thin metal sheet to move a certain distance, so that the long thin metal sheet continues to extend a certain length after passing through the bending station and extends into the rear annular conveyor belt; the hydraulic cylinder drives the pressing plate to move, so that the pressing plate supports the long thin metal sheet and bends it at a certain angle; the pressing plate is reset, and the front annular conveyor belt is started, so that the long thin metal sheet continues to move a certain distance; the hydraulic cylinder drives the pressing plate to move, and a second bend is formed at another position of the long thin metal sheet; the bending angle is controlled by controlling the displacement of the pressing plate; the above steps are repeated until the long thin metal sheet exits the channel, and the bending of the long thin metal sheet at a set number of times, a set angle, and a set position is completed.

[0011] The beneficial effects of the present invention are:

[0012] 1. The present invention adopts an upright method to bend the long thin metal sheet in the horizontal plane, which effectively saves the space occupied by the equipment and does not need to significantly increase the height of the equipment to meet the bending needs of the long thin metal sheet;

[0013] 2. Long and thin metal sheets are transported by front and rear conveyor belts during the bending process, which will not affect the positioning of the bending part due to factors such as gravity, thereby improving the control accuracy of the bending process of long and thin metal sheets;

[0014] 3. The conveying process of long and thin metal sheets is stable and not easy to shake or slip, which reduces the impact of long length on the conveying process of metal sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the rear ring conveyor belt. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1-2 As shown, the long thin metal sheet bending device includes a horizontal mounting platform 1, a front conveying mechanism, a bending mechanism, a rear conveying mechanism, and a clamping mechanism. The clamping mechanism includes a front clamping roller group 3 and a back clamping roller group 4. A channel 2 for the metal sheet to pass through is formed between the front clamping roller group 3 and the back clamping roller group 4. The front clamping roller group 3 and the back clamping roller group 4 are respectively composed of a plurality of clamping rollers 5 arranged in sequence. The clamping rollers 5 are arranged vertically. The front conveying mechanism includes a front annular conveyor belt 6 located below the channel 2. The front annular conveyor belt 6 is installed on a plurality of transmission rollers 7. The transmission rollers 7 are horizontally arranged. The transmission roller 7 is driven to rotate by the driving mechanism, the rear conveying mechanism includes a rear annular conveyor belt 8, the rear annular conveyor belt 8 is installed on a plurality of horizontally arranged driven rollers 9, the front annular conveyor belt 6 and the rear annular conveyor belt 8 are arranged in sequence, and a bending station 10 is formed between the front annular conveyor belt 6 and the rear annular conveyor belt 8, and the bending mechanism includes a fixed roller 11 and a pressing plate 12, the fixed roller 11 and the pressing plate 12 are respectively located on both sides of the bending station 10, the fixed roller 11 is arranged vertically, and the pressing plate 12 is driven by a hydraulic cylinder 13 to move horizontally from the back clamping roller group 4 to the front clamping roller group 3. The long thin metal sheet is clamped between the front clamping roller group 3 and the back clamping roller group 4, and is kept in a vertical state for bending. The bent portion formed after bending is bent in a plane, and the rear annular conveyor belt 8 can support the bent portion. The bending process does not affect the positioning of the long thin metal sheet, saving equipment space.

[0022] Furthermore, a row of evenly spaced support plates 15 are provided on the front ring conveyor belt 6, one end of the support plate 15 is fixedly connected to a fixed clamp plate 16, and the other end is movably provided with a movable clamp plate 17, a positioning groove 18 is formed between the movable clamp plate 17 and the fixed clamp plate 16, the movable clamp plate 17 is pulled by a spring 19 so that the movable clamp plate 17 moves in a direction away from the fixed clamp plate 16, a pulley 20 is rotatably provided on the outer side of the movable clamp plate 17, and a fixed slide groove 21 for the pulley 20 to extend into is fixedly provided on one side of the front ring conveyor belt 6. As the front ring conveyor belt 6 rotates, when the support plate 15 moves to the starting point of the fixed slide groove 21, the pulley 20 enters the fixed slide groove 21, and the pulley 20 drives the movable clamp plate 17 to move in the direction of the fixed clamp plate 16, so that the positioning groove 18 clamps the lower side of the long thin metal sheet, so that the long thin metal sheet can move synchronously with the front ring conveyor belt 6, and the movement control accuracy of the long thin metal sheet is improved. After the pulley 20 moves out of the fixed slide groove 21 , the movable positioning groove 18 expands in width under the pulling force of the spring 19 , and returns to the starting point of the fixed slide groove 21 after circular movement.

[0023] Furthermore, the inner surface of the front endless conveyor belt 6 is fixedly connected with a plurality of endless chains 22, and the transmission roller 7 is fixedly connected with a plurality of gears 23, which are respectively engaged with the endless chains 22, and the driving mechanism includes a servo motor, and one of the transmission rollers 7 is driven to rotate by the servo motor. The gears 23 are respectively matched with the endless chains 22, so that the movement of the front endless conveyor belt 6 is more accurate and will not slip, and the bending control is more accurate.

[0024] Further, the clamping mechanism includes a fixed frame 24 fixedly connected to the horizontal mounting platform 1, and the clamping rollers 5 in the back clamping roller group 4 are rotatably mounted on the fixed frame 24. The clamping mechanism also includes a plurality of movable frames 25 arranged in sequence, and the clamping rollers 5 in the front clamping roller group 3 are rotatably mounted on the movable frame 25. The upper and lower ends of the movable frame 25 are respectively installed with a plurality of sliding sleeves, and the sliding sleeves are respectively inserted with sliding rods 26. The fixed frame 24 is provided with a plurality of movable holes for the sliding rods 26 to move through. One end of the sliding rod 26 is fixedly connected to a limit plate 27, and the other end is threadedly connected to an adjusting nut 28 after passing through the sliding sleeve and the movable hole in sequence. The sliding rod 26 is sleeved with a spring 19, and the spring 19 is clamped between the fixed frame 24 and the corresponding movable frame 25. The movable frame 25 can be adjusted to obtain a channel 2 that is first wide and then narrow, which is convenient for adapting to the use of metal sheets after different ends.

[0025] Furthermore, the fixed roller 11 is rotatably mounted on the adjustment frame 30, and the upper and lower ends of the adjustment frame 30 are respectively fixedly connected with the adjustment screw 31, and the fixed frame 24 is provided with a plurality of movable openings for the adjustment screw 31 to move through, one end of the adjustment screw 31 is fixedly connected to the adjustment frame 30, and the other end passes through the movable opening, and the adjustment screw 31 is threadedly connected with the front nut 32 and the rear nut 33, and the fixed frame 24 is clamped between the front nut 32 and the rear nut 33. By loosening and tightening the front nut 32 and the rear nut 33, the position of the fixed frame 24 can be changed, thereby adjusting the position of the fixed roller 11, changing the position of the support point during the bending process, and adapting to the bending needs of long and thin metal sheets of different thicknesses. The fixed roller 11 can also be replaced with a fixed column with a right angle or other angles, and the fixed column can be fixedly mounted on the adjustment frame 30. The fixed column cooperates with the pressure plate 12 to obtain different bending effects.

[0026] Furthermore, one end of the driven roller 9 is rotatably connected to a sleeve 34, one end of the sleeve 34 is hinged on the fixed frame 24, a tension spring 35 is connected to the sleeve 34, one end of the tension spring 35 is tilted upward and fixedly connected to the fixed frame 24, a plurality of gears 23 are installed on the driven roller 9, and a plurality of chains 36 respectively meshing with the gears 23 are fixed on the inner surface of the rear annular conveyor belt 8. The tension spring 35 keeps the driven roller 9 in a horizontal state or tilted upward, so that the rear annular conveyor belt 8 can support the long thin metal sheet when the long thin metal sheet moves. When the pressure plate 12 starts to bend the long thin metal sheet, the rear annular conveyor belt 8 is stressed, the driven roller 9 is tilted, and the bent section of the long thin metal sheet can smoothly detach from the rear annular conveyor belt 8, and the rear annular conveyor belt 8 is reset. After the pressure plate 12 is retracted, the front annular conveyor belt 6 is started, and the unbent part of the long thin metal sheet moves and is caught by the rear annular conveyor belt 8.

[0027] Furthermore, a support platform 36 is provided on one side of the horizontal mounting platform 1, and the middle of the support platform 36 is close to the bending station 10. The support platform 36 is used to support the bent metal sheet.

[0028] The long thin metal sheet bending method uses the long thin metal sheet bending device, which includes the following steps: standing up the long thin metal sheet and inserting it between the front clamping roller group 3 and the back clamping roller group 4, so that the lower side of the long thin metal sheet is placed on the front annular conveyor belt 6; the front annular conveyor belt 6 drives the long thin metal sheet to move a certain distance, so that the long thin metal sheet continues to extend a certain length after passing through the bending station 10 and extends into the rear annular conveyor belt 8; the hydraulic cylinder 13 drives the pressing plate 12 to move, so that the pressing plate 12 supports the long thin metal sheet and bends it to a certain angle; the pressing plate 12 is reset, and the front annular conveyor belt 6 is started, so that the long thin metal sheet continues to move a certain distance; the hydraulic cylinder 13 drives the pressing plate 12 to move, and a second bend is formed at another position of the long thin metal sheet; the bending angle is controlled by controlling the displacement of the pressing plate 12; the above steps are repeated until the long thin metal sheet exits the channel 2, and the bending of the long thin metal sheet at a set number of times, a set angle, and a set position is completed.

[0029] It is worth mentioning that the technical features such as hydraulic cylinders and motors involved in the patent application of this invention should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected according to the conventional methods in the field, and should not be regarded as the inventive point of this patent. This patent will not be further elaborated.

[0030] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A device for bending long thin metal sheets, characterized in that: It includes a horizontal mounting platform, a front conveying mechanism, a bending mechanism, a rear conveying mechanism, and a clamping mechanism. The clamping mechanism includes a front clamping roller group and a back clamping roller group. A channel for the metal sheet to pass through is formed between the front clamping roller group and the back clamping roller group. The front clamping roller group and the back clamping roller group are respectively composed of a number of clamping rollers arranged in sequence. The clamping rollers are arranged vertically. The front conveying mechanism includes a front annular conveyor belt located below the channel. The front annular conveyor belt is installed on a number of transmission rollers. The transmission rollers are arranged horizontally and driven to rotate by a driving mechanism. The rear conveying mechanism includes a rear annular conveyor belt. The rear annular conveyor belt is installed on a number of horizontally arranged driven rollers. The front annular conveyor belt and the rear annular conveyor belt are arranged in sequence. A bending station is formed between the front annular conveyor belt and the rear annular conveyor belt. The bending mechanism includes a fixed roller and a pressure plate. The fixed roller and the pressure plate are respectively located on both sides of the bending station. The fixed roller is arranged vertically. The pressure plate is driven by a hydraulic cylinder to move horizontally from the back clamping roller group to the front clamping roller group.

2. The long thin metal sheet bending device according to claim 1, characterized in that: The front annular conveyor belt is provided with a row of evenly spaced support plates, one end of the support plate is fixedly connected to a fixed clamp plate, and the other end is movably provided with a movable clamp plate, a positioning groove is formed between the movable clamp plate and the fixed clamp plate, the movable clamp plate is pulled by a spring so that the movable clamp plate moves in a direction away from the fixed clamp plate, a pulley is rotatably installed on the outer side of the movable clamp plate, and a fixed slide groove for the pulley to extend into is fixedly provided on one side of the front annular conveyor belt.

3. The long thin metal sheet bending device according to claim 2, characterized in that: The inner surface of the front annular conveyor belt is fixedly connected with a plurality of annular chains, the transmission roller is fixedly connected with a plurality of gears, the gears are respectively engaged with the annular chains, the driving mechanism includes a servo motor, and one of the transmission rollers is driven to rotate by the servo motor.

4. The long thin metal sheet bending device according to claim 1, characterized in that: The clamping mechanism includes a fixed frame fixedly connected to the horizontal mounting table, the clamping rollers in the back clamping roller group are rotatably mounted on the fixed frame, the clamping mechanism also includes a plurality of movable frames arranged in sequence, the clamping rollers in the front clamping roller group are rotatably mounted on the movable frame, the upper and lower ends of the movable frame are respectively mounted with a plurality of sliding sleeves, sliding rods are respectively inserted in the sliding sleeves, the fixed frame is provided with a plurality of movable holes for the sliding rods to movably pass through, one end of the sliding rod is fixedly connected to a limiting plate, and the other end passes through the sliding sleeve and the movable hole in sequence and is threadedly connected to an adjusting nut, a spring is sleeved on the sliding rod, and the spring is clamped between the fixed frame and the corresponding movable frame.

5. The long thin metal sheet bending device according to claim 4, characterized in that: The fixed roller is rotatably mounted on the adjusting frame, and the upper and lower ends of the adjusting frame are respectively fixedly connected with adjusting screws. The fixed frame is provided with a plurality of movable openings for the adjusting screws to movably pass through. One end of the adjusting screw is fixedly connected to the adjusting frame, and the other end passes through the movable opening. The adjusting screw is threadably connected with a front nut and a rear nut, and the fixed frame is clamped between the front nut and the rear nut.

6. The long thin metal sheet bending device according to claim 4, characterized in that: One end of the driven roller is rotatably connected to a sleeve, one end of the sleeve is hinged on a fixed frame, a tension spring is connected to the sleeve, one end of the tension spring is tilted upward and fixedly connected to the fixed frame, a plurality of gears are installed on the driven roller, and a plurality of chains respectively meshing with the gears are fixed on the inner surface of the rear annular conveyor belt.

7. The long thin metal sheet bending device according to claim 1, characterized in that: A support platform is provided on one side of the horizontal installation platform, and the middle part of the support platform is close to the bending station.

8. A method for bending a long thin metal sheet, characterized in that: The use of a long thin metal sheet bending device as claimed in any one of claims 1 to 7 comprises the following steps: standing up the long thin metal sheet and inserting it between the front clamping roller group and the back clamping roller group so that the lower edge of the long thin metal sheet is placed on the front annular conveyor belt; the front annular conveyor belt drives the long thin metal sheet to move a certain distance, so that the long thin metal sheet continues to extend a certain length after passing through the bending station and extends into the rear annular conveyor belt; the hydraulic cylinder drives the pressing plate to move so that the pressing plate supports the long thin metal sheet and bends it at a certain angle; the pressing plate is reset, and the front annular conveyor belt is started, so that the long thin metal sheet continues to move a certain distance; the hydraulic cylinder drives the pressing plate to move, and a second bend is formed at another position of the long thin metal sheet; the bending angle is controlled by controlling the displacement of the pressing plate; the above steps are repeated until the long thin metal sheet exits the channel, and the bending of the long thin metal sheet at a set number of times, a set angle, and a set position is completed.

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