Metal sheet bending machine
By using fixed pressure rollers and automatic centering lifting components in the metal sheet bending machine, the problem of deformation and dislocation of metal sheet parts during bending is solved, and precise bending and multi-angle bending capabilities are achieved.
Patent Information
- Application Number
- CN202510042850.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-03-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
在金属薄板件的折弯过程中，常规的刀具下压方式容易导致薄板件的形变和错位，导致形状扭曲和厚度变化。
A metal thin plate piece bending machine is adopted. The two press rollers with fixed downward pressure move along the surface of the convex module, so that the metal thin plate is bent into the bending angle of the convex module. At the same time, the lifting assembly and deflection pallet are used to realize the automatic centering and horizontal state of the metal thin plate to ensure the constant pressure and appropriate movement of the press roller.
Accurate bending of metal thin plate parts is achieved, distortion and thickness changes of thin plate parts are avoided, and bending treatment at different angles can be completed due to the removability of the convex module.
Smart Images
Figure CN119702789A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of plate bending, in particular to a metal sheet bending machine. Background Art
[0002] The power is mainly transmitted through the mechanical structure, so that the upper die (bending tool) moves up and down relative to the lower die to achieve the bending of the plate. Generally, there are two common structures: eccentric shaft type and elbow type. When bending some metal plates, the conventional mode is that the upper punch, that is, the tool, moves up and down, and the metal plate is placed on the upper die. After the tool is pressed down, the metal plate is pressed into the die, so that the metal plate is squeezed into the shape of the die, thereby achieving the bending of the metal plate.
[0003] However, when it is necessary to bend metal sheets, if only the conventional tool pressing method is used, the sheet metal itself will be deformed. Since the metal sheet is too thin, the tool will be misaligned during movement. At this time, the metal sheet will be misaligned and stacked inside the die, causing the shape of the sheet metal to be distorted, resulting in a change in the thickness of the sheet metal. Therefore, it is necessary to improve the existing equipment for bending by extrusion with two dies. Summary of the invention
[0004] The present invention provides a metal sheet bending machine, which solves the problems raised in the above background technology.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] The cam mechanism is a kind of metal sheet bending machine, comprises a base, a column is arranged on the side of the base away from the ground, a top plate arranged parallel to the base is arranged on the end of the column, and also comprises a punch mechanism and a special-shaped die mechanism; the punch mechanism comprises a convex module arranged in the middle of the base, the metal sheet is placed on the top of the convex module, and both sides of the convex module are provided with a lifting component for driving the metal sheet to maintain a horizontal state; the special-shaped die mechanism comprises a slide groove arranged on both sides of the top plate, the slide groove is slidably connected with a sliding seat, the side of the sliding seat is provided with a lifting rod which moves laterally with the sliding seat, the side of the sliding seat is provided with a protruding frame on the side of the lifting rod close to the base, and the protruding frame is rotatably connected with a pressing roller cooperating with the convex module, the side of the top plate is provided with a constant pressure pressing component, the constant pressure pressing component drives the pressing roller to move toward the direction of the base according to a constant pressure, and a spacing adjustment component for adjusting the spacing between the two sliding seats is arranged in the middle of the top plate, and the spacing adjustment component adjusts the two sliding seats to move synchronously, in the opposite direction, and at an equal distance.
[0007] As a preferred technical solution of the present invention, L-shaped card seats are provided on both sides of the base, and the L-shaped card seats can be detachably connected to the convex module.
[0008] As a preferred technical solution of the present invention, the lifting assembly includes vertical plates arranged at both ends of the base, and the ends of the vertical plates are provided with rotating seats, which are rotatably connected to the deflection support plates, and the two deflection support plates are symmetrically arranged relative to the center of the base, and the two deflection support plates rotate synchronously in opposite directions. When the metal sheet is placed on the top of the convex module, the two sides of the metal sheet will fall on the surface of the deflection support plates, and the metal sheet will rotate toward the base under the action of the gravity of the metal sheet. The extension frame is an L-shaped structure, and the end of the extension frame close to the base is deflected toward the center of the base. A sliding rod is provided on the side of the base close to the ground, and a counterweight plate is slidably connected to the middle of the sliding rod. The end of the counterweight plate is connected to one end of the traction belt, and the other end of the traction belt is connected to the end of the deflection support plate away from the center of the base. The end of the sliding rod is provided with a limit plate for limiting the movement of the counterweight plate, and mounting brackets are provided on both sides of the base, and the mounting brackets are rotatably connected to guide rollers that cooperate with the traction belt.
[0009] As a preferred technical solution of the present invention, the constant pressure pressing assembly includes a lifting cylinder arranged at both ends of the top plate, the piston rod of the lifting cylinder is fixedly connected to a fixed block, the fixed block is fixedly connected to the end of the pressing rod, the two sides of the pressing rod are slidably connected to the lifting beams fixedly connected to the ends of the lifting rods, the side of the sliding seat is provided with a horizontal plate, the horizontal plate is slidably connected to the lifting rod. The middle part of the pressing rod is fixedly connected to a limit block, and the limit block is fixedly connected to a limit rod slidably connected to the top plate.
[0010] As a preferred technical solution of the present invention, the spacing adjustment assembly includes a first bearing seat arranged at both ends of the slide slot and fixedly connected to the top plate, the first bearing seat is rotatably connected to a transverse screw, and the middle part of the transverse screw is threadedly connected to a sliding seat. A second bearing seat is arranged in the middle of the top plate, and the second bearing seat is rotatably connected to a driving shaft, one end of the driving shaft is fixedly connected to an active bevel gear, and both sides of the active bevel gear are meshedly connected to driven bevel gears fixedly connected to the end of the transverse screw, and the other end of the driving shaft is fixedly connected to the output shaft of the driving motor.
[0011] As a preferred technical solution of the present invention, support feet are provided at the four corners of the base, and mounting holes are provided at the ends of the support feet.
[0012] The present invention has the following benefits:
[0013] Two pressure rollers with fixed downward pressure move along the surface of the convex module, so that the metal sheet is bent into the bending angle of the convex module, thereby realizing the bending processing of the metal sheet. In addition, since the pressure rollers continue to roll during the bending process, the metal sheet itself will not be twisted but only bent, ensuring that the thickness of the metal sheet will not change. In addition, since the convex module is detachable, the bending machine can complete bending processing at different angles. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 The figure is a schematic diagram of the structure of a metal sheet bending machine.
[0016] Figure 2 The figure is a front view of a metal sheet bending machine.
[0017] Figure 3 The present invention is a schematic diagram of the structure of a punch mechanism in a metal sheet bending machine.
[0018] Figure 4 for Figure 3 Front view of .
[0019] Figure 5 The present invention is a schematic diagram of the structure of a special-shaped die mechanism in a metal sheet bending machine.
[0020] Figure 6 for Figure 5 Front view of .
[0021] Figure 7 The present invention is a schematic diagram of the structure of an extension frame in a metal sheet bending machine.
[0022] Figure 8 The present invention is a schematic diagram of the structure of a spacing adjustment component in a metal sheet bending machine.
[0023] Fig. 9 for Figure 8 Top view of the .
[0024] Fig.10 It is a schematic diagram of the structure of a metal sheet bending machine after the technical sheet is bent.
[0025] Fig.11 for Fig.10 Front view of .
[0026] In the figure: 1, base; 2, support foot; 3, mounting hole; 4, punch mechanism; 5, special-shaped die mechanism; 6, L-shaped clamping seat; 7, convex module; 8, vertical plate; 9, rotating seat; 10, deflection support plate; 11, counterweight plate; 12, limit plate; 13, sliding rod; 14, traction belt; 15, guide roller; 16, mounting bracket; 17, lifting assembly; 18, metal sheet; 19, column; 20, top plate; 21, lifting cylinder; 22 , fixed block; 23, pressing rod; 24, lifting beam; 25, limiting rod; 26, limiting block; 27, constant pressure pressing assembly; 28, slide groove; 29, sliding seat; 30, cross plate; 31, lifting rod; 32, extension frame; 33, pressure roller; 34, spacing adjustment assembly; 35, first bearing seat; 36, transverse screw; 37, driven bevel gear; 38, driving bevel gear; 39, second bearing seat; 40, driving motor; 41, driving shaft. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.
[0028] In one embodiment, see Figure 1-Figure 11 A metal sheet bending machine comprises a base 1, which is arranged horizontally, and support feet 2 are arranged at four corners of the lower surface of the base 1, and the lower end of the support feet 2 is a horizontal flat plate structure, so that the base 1 can be stably placed on a workbench through the support feet 2, and in order to improve stability, a mounting hole 3 is arranged in the middle of the flat plate structure at the lower end of the support feet 2, so that the base 1 can be fixed on the workbench by bolts, so that the entire bending machine maintains effective stability when working, and also includes a male die mechanism 4 and a special-shaped female die mechanism 5;
[0029] The male mold mechanism 4 includes a male mold module 7 disposed in the middle of the upper surface of the base 1. The male mold module 7 protrudes upward, and the upper end of the male mold module 7 is an arc surface, and the left and right sides of the male mold module 7 are inclined surfaces. After the metal sheet 18 is placed on the male mold module 7, the metal sheet 18 will be pressed on the upper surface of the male mold module 7 when bending, thereby realizing the bending process of the metal sheet 18. The left and right sides of the base 1 are provided with lifting components 17. When the metal sheet 18 is clamped, due to the lifting components 17 on both sides, the metal sheet 18 can fall on the top of the male mold mechanism 4 under the action of gravity. At this time, the metal sheet 1 The two ends of 8 will fall on the lifting component 17. At this time, the guiding effect of the lifting component 17 can make the metal sheet 18 automatically centered, and under the action of the lifting component 17, the metal sheet 18 will remain in a horizontal state, which is convenient for subsequent bending processing. In addition, since the self-centering effect of the metal sheet 18 is achieved, when installing the metal sheet 18, the operator only needs to put the metal sheet 18 on the convex module 7, which solves the problem of one-handed operation, and also enables a single operator to complete the operation of the entire bending machine, reducing the difficulty of operating the entire bending machine.
[0030] The special-shaped concave mold mechanism 5 includes a slide groove 28 arranged on the left and right sides of the top plate 20, the slide groove 28 is arranged in a left-right direction, and a sliding seat 29 arranged in a front-back direction is slidably connected in the middle of the slide groove 28. A lifting rod 31 is arranged on the side of the sliding seat 29. One sliding seat 29 is provided with two lifting rods 31. The two lifting rods 31 are vertically arranged and arranged on the front and back sides of the sliding seat 29. An extension frame 32 is fixedly connected to the lower end of the lifting rod 31. A pressure roller 33 arranged in a front-back direction is rotatably connected to the lower end of the extension frame 32. When the pressure roller 33 descends, the pressure roller 33 will fall on the upper surface of the male mold mechanism 4. Constant pressure pressing components 27 are arranged at the left and right ends of the top plate 20. The constant pressure pressing components 27 will cause the pressure roller 33 to move downward according to a fixed pressure, and an interval is arranged in the middle of the top plate 20. The distance adjustment component 34 can adjust the distance between the left and right sliding seats 29, and under the drive of the distance adjustment component 34, the two sliding seats 29 will move simultaneously in opposite directions, and the moving distances are equal, that is, the two sliding seats 29 move synchronously towards or away from each other, and in order to prevent the pressure roller 33 from scratching the surface of the metal sheet 18, a layer of rubber pad can be covered on the surface of the pressure roller 33. On the one hand, the rubber pad can avoid rigid contact between the pressure roller 33 and the metal sheet 18, thereby avoiding the problem of scratching the metal sheet 18. On the other hand, the rubber pad can also increase friction, so that the pressure roller 33 will not slide relative to the metal sheet 18 after falling on the metal sheet 18, and will only move when the pressure roller 33 itself rotates, thereby improving the bending accuracy of the metal sheet 18.
[0031] In one case of the present embodiment, an L-shaped snap-in seat 6 arranged in a front-to-back direction is provided on the left and right sides of the upper surface of the base 1, and the convex module 7 is a hollow structure, that is, the two ends of the convex module 7 are flat plate structures, so the left and right ends of the convex module 7 can be inserted into the interior of the L-shaped snap-in seat 6 from front to back, thereby achieving the effect of detachable connection of the convex module 7, and because the flat plates on the left and right sides of the convex module 7 fall on the base 1, the downward pressure from above can be directly transmitted to the base 1, and because the convex module 7 is in a capital Omega state, that is, the "Ω" state, when the convex module 7 is pressed downward, the two ends of the convex module 7 will press against the L-shaped snap-in seat 6, so that the convex module 7 will be locked when it is pressed, thereby ensuring that the convex module 7 can maintain a stable state during operation.
[0032] In one case of the present embodiment, the supporting assembly 17 includes a vertical plate 8 arranged in the middle of the left and right ends of the base 1, a rotating seat 9 is arranged at the upper end of the vertical plate 8, and the lower surface of the deflection support plate 10 is rotatably connected to the rotating seat 9. The end of the deflection support plate 10 close to the center of the base 1 is tilted toward the base 1, and the end of the deflection support plate 10 close to the center of the base 1 will keep rotating in the direction away from the base 1, and the left and right deflection support plates 10 are arranged in mirror symmetry with respect to the center of the base 1, and the two deflection support plates 10 rotate synchronously in opposite directions. Therefore, when the metal sheet 18 is placed on the convex module 7, the left and right ends of the metal sheet 18 will fall on the upper surfaces of the left and right deflection support plates 10. At this time, due to the deflection support Due to the inclined setting of the plate 10, the metal sheet 18 will slide downward under the action of gravity, and because the two sides of the deflection support plate 10 are mirror-imaged, when the metal sheet 18 slides along the surface of the deflection support plate 10, the metal sheet 18 will eventually slide to a horizontal state under the action of gravity until the middle of the lower surface of the metal sheet 18 falls on the top of the convex module 7, at which time the metal sheet 18 will stop moving and remain in a horizontal state, that is, when the operator clamps the metal sheet 18, he only needs to place the metal sheet 18 on the convex module 7, and under the guiding effect of the deflection support plate 10, the metal sheet 18 will eventually slide to a horizontal and centered state, thereby achieving an automatic centering effect. The extending frame 32 is an L-shaped structure, so the extending frame 32 is composed of two plate-like structures, and the lower ends of the two plates are inclined toward the center of the base 1, so that when the extending frame 32 moves downward, the extending frame 32 will push the deflection support plate 10 away, and when the extending frame 32 moves upward, the deflection support plate 10 will rotate upward, and the deflection support plate 10 will not interfere with the extending frame 32.
[0033] In one case of the present embodiment, a sliding rod 13 is vertically arranged on the left and right sides of the lower surface of the base 1, a horizontally arranged counterweight plate 11 is slidably connected to the middle of the sliding rod 13, and a limit plate 12 is fixedly connected to the lower end of the sliding rod 13, and the limit plate 12 can limit the maximum descending height of the counterweight plate 11, the lower end of the traction belt 14 is connected to the left and right ends of the counterweight plate 11, the upper end of the traction belt 14 is connected to the end of the deflection support plate 10 away from the center of the base 1, and mounting brackets 16 are arranged on the left and right ends of the lower surface of the base 1, and the lower end of the mounting bracket 16 is rotatably connected to the guide roller 1 5. The guide roller 15 will push up the middle part of the traction belt 14 downward, so as to avoid the friction between the middle part of the traction belt 14 and the left and right ends of the base 1, which may cause damage to the traction belt 14. Under the action of the counterweight plate 11, the traction belt 14 will pull the end of the deflection support plate 10 away from the center of the base 1 downward, so that the end of the deflection support plate 10 close to the center of the base 1 will deflect upward, and after the counterweight plate 11 falls to the limit plate 12, the deflection support plate 10 rotates to the top, and at this time, the end of the deflection support plate 10 close to the center of the base 1 is still in a downward tilted state, so it still has a guiding effect.
[0034] In one case of the present embodiment, the constant pressure pressing assembly 27 includes a lifting cylinder 21 arranged at the left and right ends of the top plate 20, the piston rod of the lifting cylinder 21 is extended upward, and the end of the piston rod of the lifting cylinder 21 is fixedly connected to the fixing block 22, and the left and right fixing blocks 22 are fixedly connected to the left and right ends of the pressing rod 23, the pressing rod 23 is arranged in a left-right direction, and the left and right sides of the pressing rod 23 are slidably connected with a lifting beam 24 arranged in a front-back direction, and the front and rear ends of the lower surface of the lifting beam 24 are fixedly connected to the upper end of the lifting rod 31, and the upper and lower sides of the side of the sliding seat 29 are provided with a cross plate 30, and the front and rear ends of the cross plate 30 are slidably connected to the middle part of the lifting rod 31, so when the piston rod of the lifting cylinder 21 is extended or When contracted, the lower pressure rod 23 will move up and down, thereby causing the lifting rod 31 to move up and down. In order to ensure that the lower pressure rod 23 moves up and down in a horizontal state, a limit block 26 set in the front and rear directions is fixedly connected to the middle part of the lower pressure rod 23, and the front and rear ends of the lower surface of the limit block 26 are fixedly connected to the upper end of the vertically set limit rod 25. The lower part of the limit rod 25 is slidably connected to the middle part of the front and rear sides of the top plate 20. The limit rod 25 and the top plate 20 slide up and down, so that the lower pressure rod 23 can move up and down in a horizontal state, and the air inlet ends of the left and right lifting cylinders 21 are connected to the same air source. Therefore, the lifting rod 31 is controlled to move up and down by the same air source, thereby avoiding the problem of jamming caused by different forces on the left and right ends of the lower pressure rod 23.
[0035] In one case of the present embodiment, the spacing adjustment assembly 34 includes a first bearing seat 35 disposed at both ends of the slide slot 28 and fixedly connected to the top plate 20, the first bearing seat 35 is rotatably connected to a transverse screw rod 36, and the middle part of the transverse screw rod 36 is threadedly connected to the sliding seat 29. The transverse screw rod 36 is disposed in the middle part of the slide slot 28 in a left-right direction, so when the transverse screw rod 36 rotates, the sliding seat 29 moves left and right along the slide slot 28. In order to maintain the structural strength of the top plate 20, the slide slots 28 are respectively disposed on the left and right sides of the top plate 20, so that there is still a part of the structure of the top plate 20 between the two slide slots 28, and the two slide slots 28 are not in a completely conductive state, so that the top plate 20 ensures the structural strength. A second bearing seat 39 is set at the rear middle position of the upper surface of the top plate 20, and the middle part of the second bearing seat 39 is rotatably connected with a driving shaft 41 set in a front-to-back direction. A driving bevel gear 38 is set at the front section of the driving shaft 41, and the left and right sides of the driving bevel gear 38 are respectively meshed and connected with a driven bevel gear 37, and the driven bevel gear 37 is fixed to the end of the transverse screw rod 36 close to the center of the top plate 20. Therefore, when the driving shaft 41 rotates, the meshing transmission of the driving bevel gear 38 and the driven bevel gear 37 makes the two transverse screw rods 36 rotate synchronously, so that the two sliding seats 29 move synchronously towards or away from each other. A driving motor 40 is set on the rear side of the upper surface of the top plate 20, and the output shaft of the driving motor 40 is fixedly connected to the rear end of the driving shaft 41. Therefore, the driving motor 40 can drive the driving shaft 41 to rotate, so that the transverse screw rod 36 will rotate under the drive of the driving motor 40.
[0036] During the implementation of this embodiment, the entire bending machine is first placed on the workbench, and a wooden board can be placed under the bending machine. The self-tapping screws can be put into the mounting holes 3 and screwed into the wooden board, so that the supporting legs 2 can be fixed on the wooden board. The bending machine is fixed by bolt connection. A convex module 7 of a suitable size is selected according to the required bending angle, and the convex module 7 is inserted from front to back into the L-shaped clamping seat 6 to complete the fixing of the convex module 7.
[0037] The metal sheet 18 is clamped and processed. First, the lifting cylinder 21 is started, and the piston rod of the lifting cylinder 21 is extended, so that the lower pressure rod 23 moves upward, and the pressure roller 33 moves upward, and the driving motor 40 is started. The two transverse screw rods 36 drive the two sliding seats 29 to move closer to each other, so that the two pressure rollers 33 press against each other and move upward. At this time, the counterweight plate 11 moves downward along the sliding rod 13 under the action of gravity. When the counterweight plate 11 falls on the limit plate 12, the deflection support plate 10 rotates to the top, but the deflection support plate 10 is still in a downward tilted state. At this time, the operator will place the metal sheet 18 on the punch. At the top of the block 7, the left and right ends of the metal sheet 18 will fall on the deflection support plate 10. At this time, under the action of the gravity of the metal sheet 18, the deflection support plates 10 on both sides will be pressed downward. When the middle part of the metal sheet 18 contacts the top of the convex module 7, the metal sheet 18 stops descending, and the left and right ends of the metal sheet 18 will slide along the inclined surface of the deflection support plate 10. When the metal sheet 18 stops moving, the edges of the left and right sides of the metal sheet 18 will fit on the surface of the deflection support plate 10, so that the metal sheet 18 is horizontal and located in the center of the base 1. At this time, the clamping process of the metal sheet 18 is completed.
[0038] The metal sheet 18 is bent by first starting the lifting cylinder 21 and applying a relatively small air pressure to drive the lifting cylinder 21, so that the piston rod of the lifting cylinder 21 moves downward. At this time, the lower pressure rod 23 moves downward, and the pressure roller 33 moves downward and falls on the upper surface of the metal sheet 18. At this time, the two upper pressure rollers 33 press the left and right sides of the upper surface of the metal sheet 18. At this time, the metal sheet 18 is slightly pressed, and the metal sheet 18 completes the preliminary locking process. The air pressure of the lifting cylinder 21 is gradually increased, so that the downward pressure of the pressure roller 33 gradually increases. At this time, the metal sheet 18 begins to be pressed on the top of the convex module 7, and the middle part of the metal sheet 18 is bent and fits on the upper surface of the convex module 7. At the end, when the air pressure meets the pressure requirement, the pressure roller 33 will press against the top of the convex module 7 and stop moving. At this time, the drive motor 40 is started, and the drive motor 40 rotates the transverse screw rods 36 on both sides through gear transmission. The two sliding seats 29 are separated from each other. At this time, the pressure rollers 33 are separated from each other, and because the lifting cylinder 21 continuously provides downward pressure, the pressure rollers 33 gradually move away from each other and remain in a state of being close to the upper surface of the convex module 7, so that the metal sheet 18 is gradually bent, and the metal sheet 18 is gradually pressed tightly on the arc surface at the upper end of the convex module 7. When the pressure roller 33 moves to the inclined surfaces on the left and right sides of the convex module 7, the metal sheet 18 has completed the preliminary bending process.
[0039] Multiple bending processes are not necessary. If the bending angle is large, the metal sheet 18 will be plastically deformed after one bending. After the pressure roller 33 is separated from the metal sheet 18, the metal sheet 18 will not be completely reversed. In this case, no secondary bending process is required. However, if the material properties of the metal sheet 18 or the bending angle are small, the metal sheet 18 is in an elastic deformation state. If the pressure roller 33 is removed after only one bending, the metal sheet 18 will deflect in the opposite direction and reduce the bending angle. In this case, multiple repeated bending processes are required, that is, while keeping the pressure roller 33 constant. Under the premise of downward pressure, the drive motor 40 is started in forward and reverse rotations for multiple times, so that the sliding seats 29 move closer to and away from each other, that is, the sliding seats 29 move back and forth along the slide groove 28, and the two pressure rollers 33 move closer to and away from each other. At this time, the pressure roller 33 rolls along the upper surface of the convex module 7, and the pressure roller 33 will move up and down adaptively. At this time, the pressure roller 33 continuously bends the metal sheet 18. After repeated bending processes, the bending of the metal sheet 18 is in a state of plastic deformation. At this time, after the pressure roller 33 is separated from the metal sheet 18, the metal sheet 18 will not have the problem of reverse bending.
[0040] The metal sheet 18 is disassembled and assembled, and the lifting cylinder 21 is started in reverse. At this time, the pressure roller 33 moves upward, and the driving motor 40 is started, so that the pressure rollers 33 move closer to each other, so that the left and right pressure rollers 33 are pressed against each other and then move upward. At this time, the pressure rollers 33 are away from the metal sheet 18, and the rotating seat 9 is connected to the position of the deflection support plate 10 away from the center of the base 1. That is to say, if the deflection support plate 10 is only subjected to its own gravity, the deflection support plate 10 will rotate downward. At this time, the operator's left hand lifts up the counterweight plate 11, The traction belt 14 reduces the pulling force on the deflection pallet 10, and the deflection pallet 10 rotates downward under the action of gravity, and the deflection pallet 10 moves away from the convex module 7. At this time, the operator's right hand can slide the metal sheet 18 to the front side, and the metal sheet 18 moves forward along the convex module 7. The metal sheet 18 will be disengaged from the convex module 7. At this time, the disassembly of the metal sheet 18 is completed, and the counterweight plate 11 is released, and the counterweight plate 11 will fall on the limit plate 12. At this time, the entire bending machine can perform subsequent bending processing of the metal sheet 18.
[0041] The bending machine is stored and processed. When the bending machine is not used for a long time, it needs to be stored and processed. First, the deflection support plate 10 is rotated downward, and the deflection support plate 10 is rotated to a vertical state and leans against the vertical plate 8. At this time, the fixing belt is taken out and wrapped around the outside of the deflection support plate 10 and the vertical plate 8, so that the deflection support plate 10 and the vertical plate 8 are tied tightly. At this time, the deflection support plate 10 will not shake, and the convex module 7 is pulled out to the front side so that the convex module 7 is disengaged from the L-shaped card seat 6, and the drive motor 40 is started. The two sliding seats 29 are separated and moved from each other, and the jacking cylinder 21 is started. The lower pressure rod 23 moves downward, and the lifting beam 24 moves downward and falls on the cross plate 30. At this time, the lifting beam 24 and the sliding seat 29 can be fixed by the binding belt, and the drive motor 40 is started in the reverse direction. The two sliding seats 29 move closer to each other again. When the two pressure rollers 33 are close to each other, a rubber pad is placed between the two pressure rollers 33. The last two pressure rollers 33 are pressed tightly on the left and right sides of the rubber pad. At this time, the two pressure rollers 33 can be tied together by a strap, so that the position of the pressure rollers 33 is fixed. In addition, since a rubber pad is placed between the two pressure rollers 33, the two pressure rollers 33 are prevented from being squeezed together for a long time, and the two pressure rollers 33 are effectively protected. At the same time, since the rubber pad itself has a certain deformation, after being placed for a long time, if the distance between the two pressure rollers 33 changes slightly, the deformation of the rubber pad can compensate for this change, so that the rubber pad can be continuously placed between the two pressure rollers 33 to continuously provide protection. At this time, the air pipe of the lifting cylinder 21 can be disconnected, the power supply of the entire bending machine can be removed, and the self-tapping screws previously used for fixing can be loosened. At this time, the entire bending machine can be directly placed in the storage box, and during the movement, the various components inside the bending machine will not shake.
[0042] The present invention is applicable to a metal sheet bending machine, which moves along the surface of the convex module 7 through two pressure rollers 33 with fixed downward pressure, so that the metal sheet 18 is bent into the bending angle of the convex module 7, thereby realizing the bending processing of the metal sheet 18. In addition, since the pressure rollers 33 continue to roll during the bending process, the metal sheet 18 itself will not be twisted but only bent, ensuring that the thickness of the metal sheet 18 will not change. In addition, since the convex module 7 is detachably arranged, the bending machine can complete bending processing at different angles.
[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.
Claims
1. A metal sheet bending machine, comprising a base, a column is arranged on the side of the base away from the ground, and a top plate arranged parallel to the base is arranged at the end of the column, characterized in that: It also includes a male die mechanism and a special-shaped female die mechanism; The male mold mechanism comprises a male module disposed in the middle of the base, a metal sheet is placed on the top of the male module, and lifting components for driving the metal sheet to maintain a horizontal state are disposed on both sides of the male module; The special-shaped concave mold mechanism includes a slide groove arranged on both sides of the top plate, the slide groove is slidably connected to a sliding seat, a lifting rod which moves laterally with the sliding seat is arranged on the side of the sliding seat, an extension frame is arranged on the side of the lifting rod close to the base, the extension frame is rotatably connected to a pressure roller which cooperates with the convex module, a constant pressure pressing component is arranged on the side of the top plate, the constant pressure pressing component drives the pressure roller to move toward the direction of the base according to a constant pressure, and a spacing adjustment component for adjusting the spacing between the two sliding seats is arranged in the middle of the top plate, and the spacing adjustment component adjusts the two sliding seats to move synchronously, in the opposite direction, and at equal distances.
2. A metal sheet bending machine according to claim 1, characterized in that: L-shaped card seats are arranged on both sides of the base, and the L-shaped card seats can be detachably connected to the convex module.
3. A metal sheet bending machine according to claim 1, characterized in that: The lifting assembly includes vertical plates arranged at both ends of the base, and rotating seats are arranged at the ends of the vertical plates. The rotating seats are rotatably connected to the deflection support plates. The two deflection support plates are symmetrically arranged relative to the center of the base, and the two deflection support plates rotate synchronously in opposite directions. When the metal sheet is placed on the top of the convex module, both sides of the metal sheet will fall on the surface of the deflection support plates, and the metal sheet will rotate toward the base under the action of the gravity of the metal sheet.
4. A metal sheet bending machine according to claim 3, characterized in that: The extending frame is an L-shaped structure, and one end of the extending frame close to the base is deflected toward the center of the base.
5. The metal sheet bending machine according to claim 3, characterized in that: A sliding rod is provided on the side of the base close to the ground, and a counterweight plate is slidably connected to the middle part of the sliding rod. The end of the counterweight plate is connected to one end of the traction belt, and the other end of the traction belt is connected to the end of the deflection support plate away from the center of the base. A limit plate for limiting the movement of the counterweight plate is provided at the end of the sliding rod, and mounting brackets are provided on both sides of the base. The mounting brackets are rotatably connected to guide rollers that cooperate with the traction belt.
6. The metal sheet bending machine according to claim 1, characterized in that: The constant pressure downward pressure assembly includes a lifting cylinder arranged at both ends of the top plate, the piston rod of the lifting cylinder is fixedly connected to a fixed block, the fixed block is fixedly connected to the end of the downward pressure rod, and the two sides of the downward pressure rod are slidably connected to lifting beams fixedly connected to the ends of the lifting rods. A cross plate is arranged on the side of the sliding seat, and the cross plate is slidably connected to the lifting rod.
7. A metal sheet bending machine according to claim 6, characterized in that: The middle part of the pressing rod is fixedly connected with a limiting block, and the limiting block is fixedly connected with a limiting rod which is slidably connected with the top plate.
8. The metal sheet bending machine according to claim 1, characterized in that: The spacing adjustment component includes a first bearing seat arranged at both ends of the slide groove and fixedly connected to the top plate, the first bearing seat is rotatably connected to a transverse screw rod, and the middle part of the transverse screw rod is threadedly connected to the sliding seat.
9. A metal sheet bending machine according to claim 8, characterized in that: A second bearing seat is provided in the middle of the top plate, and the second bearing seat is rotatably connected to a driving shaft, one end of the driving shaft is fixedly connected to an active bevel gear, and both sides of the active bevel gear are meshingly connected to driven bevel gears fixedly connected to the end of the transverse screw rod, and the other end of the driving shaft is fixedly connected to the output shaft of the driving motor.
10. The metal sheet bending machine according to claim 1, characterized in that: Support feet are arranged at the four corners of the base, and mounting holes are arranged at the ends of the support feet.