A high-efficiency and energy-saving heavy-duty CNC bending machine

Abstract

This invention relates to the field of bending machine technology, specifically to a high-efficiency, energy-saving heavy-duty CNC bending machine, which includes a bending chamber. A partition is provided inside the bending chamber, and a bending device for bending sheet metal is provided inside the partition. The bending device contains bending dies for different sheet metal bending shapes, and a limiting plate for controlling the position of the sheet metal is also provided inside the bending device. Changing devices for convenient die rotation are provided on both sides of the partition. The changing device contains a slide rail assembly for limiting the position of the bending device. This invention bends the sheet metal using the bending device and replaces the bending dies using the changing device and slide rail assembly.

Description

Technical Field

[0001] This invention relates to the field of bending machine technology, and more specifically, to a high-efficiency, energy-saving, heavy-duty CNC bending machine. Background Technology

[0002] CNC bending machines use various general-purpose or special-purpose molds to bend cold metal sheets into workpieces with various geometric cross-sectional shapes. They are sheet metal forming machines designed for cold-rolled sheet metal processing and are widely used in sheet metal bending processing in industries such as automobiles, aircraft manufacturing, light industry, shipbuilding, containers, elevators, and railway vehicles.

[0003] Chinese patent application CN113071130B discloses a high-efficiency, energy-saving hybrid hydraulic CNC bending machine. The machine body includes an upper die and a lower die, both positioned vertically. A bending tool is connected to the upper die, and a positioning groove adapted to the bending tool is connected to the lower die. A drive device for moving the upper die vertically is also connected to the machine body. This drive device includes a hydraulic cylinder, with its output rod connected to the upper die. An oil tank is located within the machine body and connected to an oil pump. The oil pump is connected to a servo motor, which drives the oil pump, causing the piston rod of the hydraulic cylinder to move. This design eliminates the need for proportional and directional valves, allowing the oil pump to start with near-pressure-free operation when the servo motor starts, resulting in fast response and improved work efficiency.

[0004] Although the aforementioned patent utilizes a servo motor to drive the oil pump, enabling the piston rod of the oil cylinder to move without the need for proportional valves and directional valves, thus solving the problems of high energy loss, system overheating, low energy utilization, and high noise in bending machines, it still presents challenges. First, when bending sheet metal, it is necessary to determine whether the bending angle meets the requirements. Second, during multiple processes, adjustments and replacements to the molds require disassembling the bending machine, which compromises processing efficiency.

[0005] In view of this, we propose a high-efficiency and energy-saving heavy-duty CNC bending machine. Summary of the Invention

[0006] The purpose of this invention is to provide a high-efficiency and energy-saving heavy-duty CNC bending machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides a high-efficiency and energy-saving heavy-duty CNC bending machine, comprising a bending chamber, an inner partition of which is provided, and a bending device for bending sheet metal is provided on the inner side of the partition. The bending device contains bending dies for different sheet metal bending shapes, and a limiting plate for controlling the position of the sheet metal is also provided within the bending device. Changing devices for convenient die rotation are provided on both sides of the partition, and a slide rail assembly for limiting the position of the bending device is provided within the changing device.

[0008] The bending device bends the sheet metal, and the changing device and slide rail assembly are used to change the bending die.

[0009] As a preferred embodiment of the present invention, an inlet is provided on one side of the bending chamber, a support plate is fixedly connected to the inner side of the inlet, partitions are fixedly connected to both sides of the interior of the bending chamber, and bending devices are provided on the inner sides of the partitions on both sides. The bending devices include an organic body and a hydraulic cylinder.

[0010] As a preferred embodiment of the present invention, the hydraulic cylinder is slidably connected to the upper outer wall of one side of the machine body, and a leveling column is telescopically connected to the bottom of the hydraulic cylinder. A fixing plate is fixedly connected to the lower side of the leveling column by bolts. A bending column is slidably connected between the fixing plate and the leveling column at the bottom. The bending column is connected to the machine body by a connecting column. The connecting column is slidably connected to the machine body and fixedly connected to the leveling column.

[0011] As a preferred embodiment of the present invention, a fixed column is fixedly connected to the inner side of the body, and the fixed column is connected to the regular column through a retractable pipe.

[0012] Preferably, a sliding column is slidably connected to one side of the machine body, a platform is fixedly connected to the top of the sliding column, guard plates are fixedly connected to both sides of the platform, bolts are fixedly connected to both sides of the platform, the guard plates are fixedly connected to both sides of the platform by bolts, fixing members are fixedly connected to the inner sides of the guard plates on both sides, telescopic rods are fixedly connected to the inner sides of the fixing members, and a leveling plate is fixedly connected to the telescopic rod on the side away from the fixing members, wherein:

[0013] Slider blocks are fixedly connected to both sides of the platform.

[0014] As a preferred embodiment of the present invention, both ends of the regular plate are fixedly connected to extension rods, the top of the platform is provided with a bending mold, the bending mold is a cuboid with multiple bending grooves of different specifications, the inner side of the bending mold is fixedly connected to a rotating rod, and the fixed column is fixedly connected to a limit plate through the machine body via a telescopic column.

[0015] In a preferred embodiment of the present invention, the rotating rod, the slider, and the extension rod all pass through the partition, and the outer wall of the partition is provided with a plurality of limiting holes suitable for the movement of the rotating rod, the extension rod, and the slider.

[0016] Preferably, the replacement device includes a motor, which is fixedly connected to the outer wall of the bending chamber. A first turntable is fixedly connected to the output end of the bending chamber. A protruding post and a limiting plate are fixedly connected to the first turntable on the side away from the motor. The protruding post is positioned around the notch of the limiting plate. A second turntable is located on one side of the protruding post. A first gear is fixedly connected to one side of the second turntable. Multiple arched holes are formed on the outer wall of the second turntable, wherein:

[0017] The diameter of the protruding column matches the width of the arched hole.

[0018] Preferably, a second gear is fixedly connected to the outer walls of both ends of the rotating rod. The second gear meshes with a first gear. A slide rail assembly is provided on the side of the second gear away from the partition. The slide rail assembly includes a first slide rail and a second slide rail. A first strip-shaped hole is formed on the outer wall of the first slide rail, and a second strip-shaped hole is formed on the outer wall of the second slide rail. The end of the rotating rod and the slider are slidably connected in the first strip-shaped hole, and the outer wall of the extension rod is slidably connected in the second strip-shaped hole.

[0019] The first slide rail is fixedly connected to the second slide rail, and the first slide rail is fixedly connected to the inner wall of the bending chamber.

[0020] Preferably, the replacement device includes a third turntable, which is rotatably connected to the inner wall of the bending chamber. A threaded component is fixedly connected to the third turntable on the side away from the bending chamber. The thread pitch of the threaded component matches the end diameter of the extension rod. A toggle rod is fixedly connected to the third turntable on the side away from the threaded component. A toggle element is fixedly connected to the end of the toggle rod away from the third turntable. Wherein:

[0021] The shafts of the No. 3 turntables on both sides are fitted with drive belts that drive the No. 3 turntables and the No. 1 turntable.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. In this high-efficiency, energy-saving heavy-duty CNC bending machine, the operator places the metal sheet to be bent into the bending die through the inlet. Under the control of the limiting plate, the bending column presses down and cushions the bending, causing the sheet to bend. A small amount of oil is replaced in the cylinder via a fixed column and connected pipes to dissipate heat. The replaced oil is cooled within the fixed column and recycled for reuse in the next operation.

[0024] 2. In this high-efficiency and energy-saving heavy-duty CNC bending machine, the first turntable and the raised column drive the second turntable to rotate together under the drive of the motor. Under the action of the transmission belt, the extension rods and the straightening plate on both sides loosen the bending die. At the same time, under the action of the actuating component and the actuating rod, the bending die is lifted. The second turntable drives the first gear to rotate the second gear by 90 degrees, so that the bending die changes the bending groove on one side. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the high-efficiency and energy-saving heavy-duty CNC bending machine of the present invention;

[0026] Figure 2 This is a schematic cross-sectional view of the high-efficiency, energy-saving heavy-duty CNC bending machine of the present invention;

[0027] Figure 3 This is a three-dimensional internal view of the high-efficiency, energy-saving heavy-duty CNC bending machine of the present invention;

[0028] Figure 4 This is a three-dimensional schematic diagram of the inner bending device of the partition plate of the high-efficiency and energy-saving heavy-duty CNC bending machine of the present invention.

[0029] Figure 5 This is a three-dimensional schematic diagram of the replacement device for the high-efficiency and energy-saving heavy-duty CNC bending machine of the present invention;

[0030] Figure 6 This is an enlarged schematic diagram of part A of the high-efficiency and energy-saving heavy-duty CNC bending machine of the present invention;

[0031] Figure 7 This is a three-dimensional schematic diagram of the slide rail assembly of the high-efficiency and energy-saving heavy-duty CNC bending machine of the present invention.

[0032] Figure 8 A detailed schematic diagram of the replacement device of the high-efficiency and energy-saving heavy-duty CNC bending machine of the present invention;

[0033] The meanings of the labels in the diagram are as follows:

[0034] 1. Bending chamber; 11. Inlet; 111. Support plate; 12. Partition; 2. Bending device; 21. Machine body; 211. Fixed column; 22. Hydraulic cylinder; 23. Leveling column; 231. Fixed plate; 232. Bending column; 24. Sliding column; 241. Platform; 2411. Guard plate; 2412. Bolt; 2413. Slider; 242. Fixing component; 2421. Telescopic rod; 243. Leveling plate; 2431. Extension rod; 25. Bending die; 251. Rotating rod; 26. Limiting plate;

[0035] 3. Replacement device; 31. Motor; 32. Turntable No. 1; 321. Protruding column; 322. Limiting plate; 33. Turntable No. 2; 331. Arched hole; 332. Gear No. 1; 34. Gear No. 2; 35. Slide rail assembly; 351. Slide rail No. 1; 3511. Strip hole No. 1; 352. Slide rail No. 2; 3521. Strip hole No. 2; 36. Turntable No. 3; 361. Threaded part; 362. Actuating lever; 363. Actuating component. Detailed Implementation

[0036] The technical solutions in 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.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Example 1

[0039] Please see Figures 1-8 As shown, this embodiment provides a high-efficiency and energy-saving heavy-duty CNC bending machine, including a bending chamber 1. A partition 12 is provided on the inner side of the bending chamber 1. A bending device 2 for bending sheet metal is provided on the inner side of the partition 12. A bending die 25 for bending different sheet metal shapes is provided in the bending device 2. A limiting plate 26 for controlling the position of the sheet metal is provided in the bending device 2. A changing device 3 for convenient die rotation is provided on both sides of the partition 12. A slide rail assembly 35 for limiting the position of the bending device 2 is provided in the changing device 3. The bending device 2 bends the sheet metal, and the changing device 3 and slide rail assembly 35 are used to change the bending die 25. An inlet 11 is opened on one side of the bending chamber 1. A support plate 111 is fixedly connected to the inner side of the inlet 11. Partitions 12 are fixedly connected to both sides of the interior of the bending chamber 1. Bending devices 2 are provided on the inner side of the two partitions 12. The bending device 2 includes a body 21 and a hydraulic cylinder 22.

[0040] like Figures 2-5As shown, the hydraulic cylinder 22 is slidably connected to the upper outer wall of one side of the machine body 21. A leveling column 23 is telescopically connected to the bottom of the hydraulic cylinder 22. A fixing plate 231 is fixedly connected to the lower side of the leveling column 23 by bolts 2412. A bent column 232 is slidably connected between the fixing plate 231 and the leveling column 23 at the bottom. The bent column 232 is connected to the machine body 21 by a connecting column. The connecting column is slidably connected to the machine body 21 and fixedly connected to the leveling column 23. A fixing column 211 is fixedly connected to the inner side of the machine body 21. The fixing column 211 is connected to the leveling column 23 through a telescopic pipe. The lower side of the machine body 21... A sliding column 24 is dynamically connected, and a platform 241 is fixedly connected to the top of the sliding column 24. Guard plates 2411 are fixedly connected to both sides of the platform 241, and bolts 2412 are fixedly connected to both sides of the platform 241. Guard plates 2411 are fixedly connected to both sides of the platform 241 by bolts 2412. Fixing members 242 are fixedly connected to the inner side of the guard plates 2411 on both sides. Telescopic rods 2421 are fixedly connected to the inner side of the fixing members 242. A leveling plate 243 is fixedly connected to the telescopic rods 2421 on the side away from the fixing members 242. Slider blocks 2413 are fixedly connected to both sides of the platform 241.

[0041] Therefore, it can be concluded that during the operation of the bending machine, if... Figure 2 As shown, the worker places the metal sheet to be bent into the top of the bending mold 25 through the inlet 11. Under the limit of the limiting plate 26, the leveling plate 243 slides down under the drive of the hydraulic cylinder 22 to bend the sheet on the bending mold 25. At this time, the bending column 232 will move up a small distance in the space between the leveling column 23 and the fixing plate 231 until it reaches the top of the space between the leveling column 23 and the fixing plate 231. Only then will the sheet begin to bend under force. During the operation, the hydraulic cylinder 22 forms a high and low pressure difference through the pipe connected to the fixing column 211, which replaces a small amount of oil in the hydraulic cylinder 22 and dissipates heat in the hydraulic cylinder 22. The replaced oil will be cooled in the fixing column 211 and recycled again in the next operation.

[0042] Example 2

[0043] Unlike Embodiment 1, in order to achieve quick replacement of the bending die 25 and the bending column 232, such as Figures 6-8As shown, the replacement device 3 includes a motor 31, which is fixedly connected to the outer wall of the bending chamber 1. A first turntable 32 is fixedly connected to the output end of the bending chamber 1. A protruding post 321 and a limiting plate 322 are fixedly connected to the side of the first turntable 32 away from the motor 31. The protruding post 321 is positioned around the notch of the limiting plate 322. A second turntable 33 is located on one side of the protruding post 321. A first gear 332 is fixedly connected to one side of the second turntable 33. Multiple arched holes 331 are formed on the outer wall of the second turntable 33, wherein the diameter of the protruding post 321 matches the width of the arched holes 331. Second gears 332 are fixedly connected to the outer walls of both ends of the rotating rod 251. 4. Gear No. 2 34 meshes with gear No. 1 332. Gear No. 2 34 is provided with a slide rail assembly 35 on the side away from partition 12. The slide rail assembly 35 includes a first slide rail 351 and a second slide rail 352. The outer wall of the first slide rail 351 has a first strip hole 3511. The outer wall of the second slide rail 352 has a second strip hole 3521. The end of the rotating rod 251 and the slider 2413 are slidably connected in the first strip hole 3511. The outer wall of the extension rod 2431 is slidably connected in the second strip hole 3521. The first slide rail 351 and the second slide rail 352 are fixedly connected, and the first slide rail 351 is fixedly connected to the inner wall of the bending chamber 1.

[0044] like Figure 7 As shown, the replacement device 3 includes a third turntable 36, which is rotatably connected to the inner wall of the bending chamber 1. A threaded component 361 is fixedly connected to the third turntable 36 on the side away from the bending chamber 1. The thread pitch of the threaded component 361 matches the end diameter of the extension rod 2431. A toggle lever 362 is fixedly connected to the third turntable 36 on the side away from the threaded component 361. A toggle component 363 is fixedly connected to the end of the toggle lever 362 away from the third turntable 36. The shafts of the third turntables 36 on both sides and the outer wall of the shaft of the first turntable 32 are fitted with transmission belts that drive the third turntable 36 and the first turntable 32.

[0045] Therefore, when the bending die 25 needs to be replaced, the motor 31 is controlled to rotate in the control panel. Driven by the motor 31, the first turntable 32 and the protruding column 321 rotate together. During the rotation of the protruding column 321, it gradually rotates into the arched hole 331 of the second turntable 33, and after rotating a certain angle, it disengages from this side of the arched hole 331 and slides into the other side of the arched hole 331. Within this side of the arched hole 331, the second turntable 33 rotates 90 degrees for every full rotation of the first turntable 32. Simultaneously, the rotation of the first turntable 32 drives the rotation of the third turntable 36 on both sides via the transmission belt. The rotation of the third turntable 36 then drives the threaded component 361 to rotate, which in turn drives the extension rod 2431 to slide to both sides within the second strip-shaped hole 3521. This causes the regularizing plates 243 on both sides to loosen the inner bending die 25. During the rotation of turntable 36, the actuating lever 362 and actuating element 363 will rotate towards the rotating rod 251, lifting the rotating rod 251 and bending mold 25 and moving the bending mold 25 upward. During the upward movement of the bending mold 25, the second gear 34 will also move upward until the second gear 34 meshes with each other. At the same time, driven by motor 31, the first gear 332 drives the second gear 34 to rotate. At this time, the first gear 332 rotates 90 degrees, which will also drive the second gear 34 to rotate 90 degrees, so that the bending groove on one side of the square bending mold 25 becomes the bending groove on the other side. At this time, the operator will remove the bolts 2412 on the fixing plate 231 and remove the bending column 232 to replace it with a bending column 232 that is compatible with the bending mold 25. This way, the bending column 232 can be replaced at the same time as the bending mold 25 is replaced by the replacement device 3, which can improve the replacement efficiency.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency energy-saving heavy numerical control bending machine comprising a bending chamber (1), characterized in that: The inner side of the bending chamber (1) is provided with a partition (12), the inner side of the partition (12) is provided with a bending device (2) for bending the plate, the bending device (2) is provided with a bending die (25) for different bending shapes of the plate, the bending device (2) is provided with a limiting plate (26) for controlling the position of the plate, the two sides of the partition (12) are provided with a replacement device (3) for facilitating the replacement of the die, the replacement device (3) is provided with a slide rail assembly (35) for limiting the position of the bending device (2), and the replacement device (3) is provided with a motor (31), the motor (31) is fixedly connected to the outer wall of the bending chamber (1), the output end of the bending chamber (1) is fixedly connected with a first rotary table (32), the first rotary table (32) is fixedly connected with a protruding column (321) and a limiting disc (322) on the side away from the motor (31), the protruding column (321) is arranged at the gap peripheral position of the limiting disc (322), one side of the protruding column (321) is provided with a second rotary table (33), one side of the second rotary table (33) is fixedly connected with a first gear (332), a plurality of arcuate holes (331) are formed in the outer wall of the second rotary table (33), wherein the diameter of the protruding column (321) is matched with the width of the arcuate hole (331), the bending device (2) comprises a machine body (21) and an oil cylinder (22), one side of the machine body (21) is slidably connected with a sliding column (24), the top of the sliding column (24) is fixedly connected with a platform (241), the two sides of the platform (241) are fixedly connected with a guard plate (2411), the inner sides of the two guard plates (2411) are fixedly connected with a fixing piece (242), the inner side of the fixing piece (242) is fixedly connected with an extension rod (2421), the extension rod (2421) is fixedly connected with a regular plate (243) on the side away from the fixing piece (242), and the two ends of the regular plate (243) are fixedly connected with extension rods (2431), the inner side of the bending die (25) is fixedly connected with a rotating rod (251), the outer walls of the two ends of the rotating rod (251) are fixedly connected with a second gear (34), the second gear (34) is meshedly connected with the first gear (332), the second gear (34) is provided with a slide rail assembly (35) on the side away from the partition (12), the slide rail assembly (35) comprises a first slide rail (351) and a second slide rail (352), a first strip-shaped hole (3511) is formed in the outer wall of the first slide rail (351), a second strip-shaped hole (3521) is formed in the outer wall of the second slide rail (352), the end of the rotating rod (251) and the sliding block (2413) are slidably connected in the first strip-shaped hole (3511), and the outer wall of the extension rod (2431) is slidably connected in the second strip-shaped hole (3521). ​ ​ ​ ​ ​ The first slide rail (351) is fixedly connected with the second slide rail (352), and the first slide rail (351) is fixedly connected to the inner wall of the bending chamber (1); The replacement device (3) comprises a third rotating disc (36), the third rotating disc (36) is rotationally connected to the inner wall of the bending chamber (1), the third rotating disc (36) is fixedly connected with a threaded part (361) on the side away from the bending chamber (1), the threaded pitch of the threaded part (361) is matched with the diameter of the end of the extension rod (2431), the third rotating disc (36) is fixedly connected with a pushing rod (362) on the side away from the threaded part (361), the pushing rod (362) is fixedly connected with a pushing part (363) on the end away from the third rotating disc (36), and the pushing part (363) is provided with a plurality of different specifications of bending grooves. The shafts of the third rotating discs (36) on both sides are sleeved with the outer walls of the shafts of the first rotating disc (32) to drive the third rotating disc (36) and the first rotating disc (32) through a transmission belt.

2. The high-efficiency energy-saving heavy numerical control bending machine according to claim 1, characterized in that: The bending chamber (1) is provided with an entry opening (11) on one side, the inner side of the entry opening (11) is fixedly connected with a supporting plate (111), the inner sides of the two sides of the bending chamber (1) are fixedly connected with partition plates (12), and the inner sides of the two sides of the partition plates (12) are provided with bending devices (2).

3. The high-efficiency energy-saving heavy numerical control bending machine according to claim 2, characterized in that: The oil cylinder (22) is slidingly connected to the outer wall of the upper end of the body (21) on one side, the bottom of the oil cylinder (22) is telescopically connected with a regular column (23), the bottom of the regular column (23) is fixedly connected with a fixed plate (231) on one side through bolts, the fixed plate (231) and the regular column (23) are slidingly connected at the bottom, the bending column (232) is connected between the regular column (23) and the body (21) through a connecting column, the connecting column is slidingly connected with the body (21), and the connecting column is fixedly connected with the regular column (23).

4. The high-efficiency energy-saving heavy numerical control bending machine according to claim 3, characterized in that: The inner side of the body (21) is fixedly connected with a fixed column (211), and the fixed column (211) is connected with the regular column (23) through a telescopic pipeline.

5. The high-efficiency energy-saving heavy numerical control bending machine according to claim 4, characterized in that: The two sides of the platform (241) are fixedly connected with bolts (2412), and the guard plates (2411) are fixedly connected to the two sides of the platform (241) through the bolts (2412). The two sides of the platform (241) are fixedly connected with sliding blocks (2413).

6. The high-efficiency energy-saving heavy numerical control bending machine according to claim 5, characterized in that: The top of the platform (241) is provided with a bending die (25), the bending die (25) is a square body provided with a plurality of bending grooves of different specifications, and the fixed column (211) is fixedly connected with a limiting plate (26) through a telescopic column penetrating the body (21).

7. The high-efficiency energy-saving heavy numerical control bending machine according to claim 6, characterized in that: The rotating rod (251), the sliding block (2413) and the extension rod (2431) all penetrate the partition plate (12), and a plurality of limiting holes suitable for the movement of the rotating rod (251), the extension rod (2431) and the sliding block (2413) are formed in the outer wall of the partition plate (12).

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