Multi-mode plate bending machine

Abstract

The invention relates to the field of plate machining, in particular to a multi-mode plate bending machine, and aims to solve the problem that the production efficiency is low due to the fact that a traditional bending machine needs to be shut down to replace a cutter and a mold when bending types are switched. The bending machine comprises a deformable cutter set, a deformable die set, a cooperative controller and a workbench with a working cavity. The deformable tool set comprises four independent tool bits, the lower end faces of two first tool bits intersect to form a V-shaped pressing edge, the lower end faces of two second tool bits are arc-shaped curved surfaces, and the arc-shaped pressing edge is formed by conformal arrangement of the arc-shaped curved surfaces and the V-shaped pressing edge. The deformable die set comprises a straight face die set capable of being matched with the V-shaped pressing edge and an arc-shaped die set capable of being matched with the arc-shaped pressing edge. The die set driving mechanism is used for controlling opening and closing of the straight face die set. The cooperative controller accurately controls the lifting driving mechanism and the module driving mechanism according to the working mode, switching between V-shaped bending and arc-shaped bending is achieved, and a cutter or a mold does not need to be replaced after shutdown.

Description

Technical Field

[0001] The present invention relates to the field of sheet metal processing, and specifically to a multi-modal sheet metal bending machine. Background Art

[0002] In the field of sheet metal processing, a bending machine is a common device used for bending thin sheets into different shapes such as V-shaped and arc-shaped. However, traditional bending machines generally adopt fixed cutting tools and die sets. The functions of the cutting tools and dies are single and fixedly matched, and cannot meet multiple bending requirements simultaneously. This results in the need to stop the machine and replace the corresponding cutting tools and dies when switching the bending type (such as switching from V-shaped bending to arc-shaped bending) in actual production. Stopping the machine to replace the cutting tools and dies not only takes time but also increases the complexity of manual operation, leading to production interruptions and seriously affecting the overall efficiency of the production line. Summary of the Invention

[0003] The purpose of the present invention is to provide a multi-modal sheet metal bending machine that can switch different working modes and achieve V-shaped bending and arc-shaped bending without stopping the machine and replacing the cutting tools.

[0004] To achieve the above purpose, the present invention provides a multi-modal sheet metal bending machine, including a deformable cutting tool set, a deformable die set, a cooperative controller, and a workbench with a working cavity. The deformable cutting tool set includes four independent tool heads and a lifting drive mechanism. The lifting drive mechanism is arranged at the top of the working cavity and independently drives each tool head to move vertically. Among them, the lower end faces of the two first tool heads in the middle intersect to form a V-shaped pressing edge; the lower end faces of the two second tool heads on both sides are arc-shaped curved surfaces, and the arc-shaped curved surfaces are conformally arranged with the V-shaped pressing edge to form an arc-shaped cutting tool; the deformable die set is arranged at the bottom of the working cavity and includes: straight surface modules on both sides, the working surface of the straight surface module is a straight surface; arc-shaped modules on both sides, the working surface of the arc-shaped module is a curved surface, and the arc-shaped modules and the straight surface modules are arranged in an alternating sliding manner. The straight surface modules slide towards the middle and extend out of the arc-shaped modules to form a V-shaped die cavity, and the straight surface modules withdraw towards both sides so that the arc-shaped modules extend relatively to form a curved surface die cavity. In this way, the switching of the die cavity is realized; a module drive mechanism is used to drive the opening and closing actions of the straight surface modules; the deformable cutting tool set and the deformable die set cooperate to realize the bending of the sheet metal; the cooperative controller is used to control the lifting drive mechanism and the module drive mechanism to realize the V-shaped bending action and the arc-shaped bending action and the die cavity switching.

[0005] Further, in the first working mode, the cooperative controller synchronously drives the two first tool heads to press down and closes the straight surface modules.

[0006] Further, in the second working mode, the collaborative controller synchronously drives the two first cutting heads and the two second cutting heads to press down, and separates the straight surface module, so that the sheet metal does not contact the working surface of the straight surface module during the bending process.

[0007] As an implementation manner of the present invention, the straight surface module includes a plurality of straight surface modules, the arc module includes a plurality of curved surface modules, and the plurality of straight surface modules and the curved surface modules are alternately distributed; the module driving mechanism includes a connecting member for connecting the straight surface modules on one side, and an electric push rod for driving the connecting member. When the electric push rod controls the straight surface modules to separate, the curved surface cavity formed by the curved surface modules is used to cooperate with the cutting head for bending. When the electric push rod controls the straight surface modules to close, the V-shaped cavity formed by the straight surface modules is used to cooperate with the cutting head for bending.

[0008] Further, it further includes a sheet metal conveying assembly provided on the feeding side of the workbench. The sheet metal conveying assembly includes a hydraulic propulsion mechanism located on the feeding side of the workbench and a pneumatic ejection mechanism located on the discharging side of the workbench; the hydraulic propulsion mechanism includes a clamping assembly for clamping the sheet metal and a pushing assembly for driving the clamping assembly to move.

[0009] Further, it further includes a support table and a lifting mechanism for controlling the lifting of the support table. The lifting mechanism is linked with the bending stroke. During the process of the cutting head performing a bending action on one end of the sheet metal, the lifting mechanism controls the support table to gradually rise to support the other end of the sheet metal.

[0010] Further, the lifting mechanism includes a first telescopic rod close to the deformable mold set and a second telescopic rod far from the deformable mold set. The elongation speed of the second telescopic rod is greater than that of the first telescopic rod to match the angle of the sheet metal warping.

[0011] Further, the lifting drive mechanism is a hydraulic rod.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. Through the design of the deformable tool set and the deformable mold set, the present invention can quickly switch the bending types (such as V-shaped bending and arc bending) in different working modes without stopping to replace the tools or molds. This improvement significantly reduces the production interruption time and improves the overall working efficiency of the production line, especially suitable for the sheet metal processing scenarios of multiple varieties and small batches.

[0014] 2. The collaborative controller can accurately control the actions of the lifting drive mechanism and the module drive mechanism to realize the automatic switching of the bending process. Combined with auxiliary devices such as the sheet metal conveying assembly, the support table and the lifting mechanism, the present invention realizes the full-process automation from sheet metal feeding, bending to discharging, reduces manual intervention, and improves the production accuracy and stability.

[0015] 3. The straight module and the arc module adopt modular design and control the opening and closing actions of the module through electric push rods, enabling them to quickly adapt to different bending requirements. This modular design not only enhances the flexibility of the equipment but also facilitates future upgrades and expansions to meet more complex processing needs. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the present invention in the first working mode.

[0017] Figure 2 It is a schematic structural diagram of the present invention in the second working mode.

[0018] Figure 3 It is an exploded view of the deformable mold set in the present invention.

[0019] Figure 4 It is a schematic structural diagram of an embodiment of the present invention.

[0020] Figure 5 It is a schematic structural diagram of the present invention during operation.

[0021] As shown in the figure: 1. Deformable tool set; 11. Lifting drive mechanism; 12. First tool head; 13. Second tool head; 2. Deformable mold set; 21. Straight module; 22. Arc module; 23. Module drive mechanism; 231. Connecting piece; 232. Electric push rod; 3. Cooperative controller; 4. Workbench; 5. Hydraulic propulsion mechanism; 51. Clamping assembly; 52. Pushing assembly; 6. Pneumatic ejection mechanism; 7. Support table; 8. Lifting mechanism; 81. First telescopic rod; 82. Second telescopic rod; 9. Sheet material. Detailed Embodiments

[0022] To better understand the content of the present invention, the following will further elaborate on the present invention in combination with specific embodiments and drawings. The following embodiments are based on the technology of the present invention and give detailed implementation methods and operation steps, but the protection scope of the present invention is not limited to the following embodiments.

[0023] The present invention provides a multi-modal sheet bending machine, which includes a deformable tool set 1, a deformable die set 2, a cooperative controller 3, and a workbench 4 with a working cavity. The deformable tool set 1 includes four independent tool heads and a lifting drive mechanism 11. The lifting drive mechanism 11 is arranged at the top of the working cavity and independently drives each tool head to move vertically. Among them, the lower end faces of the two first tool heads 12 located in the middle intersect to form a V-shaped pressing edge; the lower end faces of the two second tool heads 13 located on both sides are arc-shaped curved surfaces, and the arc-shaped curved surfaces are conformally arranged with the V-shaped pressing edge to form an arc-shaped pressing tool. The deformable die set 2 is arranged at the bottom of the working cavity and includes: straight surface modules 21 on both sides, the working surface of the straight surface module 21 is a straight surface; arc-shaped modules 22 on both sides, the working surface of the arc-shaped module 22 is a curved surface, and the arc-shaped module 22 and the straight surface module 21 are arranged in an interleaved sliding manner. The straight surface module 21 slides towards the middle and extends out of the arc-shaped module 22 to form a V-shaped die cavity, and the straight surface module 21 retracts towards both sides so that the arc-shaped module 22 extends relatively to form a curved surface die cavity, and the die cavity is switched in the above way; a module drive mechanism 23 for driving the opening and closing action of the straight surface module 21; the deformable tool set 1 and the deformable die set 2 cooperate to realize the bending of the sheet. The cooperative controller 3 is used to control the lifting drive mechanism 11 and the module drive mechanism 23 to realize the V-shaped bending action and the arc-shaped bending action and the switching of the die cavity.

[0024] Through the design of the deformable tool set and the deformable die set, the present invention can quickly switch the bending method under different working modes without stopping to replace the tool or the die. The cooperative controller 3 can accurately control the lifting drive mechanism 11 and the module drive mechanism 23, and through the cooperation of the straight surface module 21, the first tool head 12 and the second tool head 13, the quick switching of the V-shaped bending action or the arc-shaped bending action is realized, further improving the automation degree and production efficiency of the equipment.

[0025] As an implementation manner of the present invention, in the first working mode, the cooperative controller 3 synchronously drives the two first tool heads 12 to press down and closes the straight surface module 21. As Figure 1As shown, the two first cutting heads 12 in the middle are controlled to move downward, and the lower end faces of the two first cutting heads 12 form a V-shaped pressure blade. At this time, the straight-face module 21 is closed, and a V-shaped cavity adapted to the V-shaped pressure blade is formed in the deformable mold group. When the plate 9 is placed between the V-shaped pressure blade and the V-shaped cavity, the bending action can be achieved by squeezing between the V-shaped pressure blade and the V-shaped cavity, thereby achieving V-shaped bending of the plate 9. The synchronous drive function of the collaborative controller enables the two first cutting heads 12 to be pressed down at the same time, closely cooperating with the closing action of the straight-face module 21, reducing the waiting time and operating steps in the bending process. This efficient bending action can significantly improve production efficiency and shorten the plate processing cycle, so that more bending tasks can be completed per unit time. In addition, since the bending angle depends on the distance between the two straight-facing modules 21 and the distance that the first blade head 12 moves downward, within the foreseeable range of the effect of the present invention, the present invention can also achieve bending at different angles by controlling the distance between the straight-facing modules 21 on both sides and controlling the downward pressure distance of the first blade head 12. It can also selectively adopt the method of controlling only one first blade head 12 to press down for bending.

[0026] As an embodiment of the present invention, the collaborative controller 3 in the second working mode synchronously drives the two first cutting heads 12 and the two second cutting heads 13 to press down and separate the facing module 21 so that the plate 9 does not contact the working surface of the facing module 21 during the bending process. Figure 2 As shown, the first blade 12 and the second blade 13 are controlled to press down synchronously. At this time, the arc surface cooperates with the cutting edge of the V-shaped pressure blade to form a circular arc pressure blade, that is, the cutting edge of the V-shaped pressure blade is located on the continuous curved surface formed by the arc surface; because the straight surface module 21 is separated at this time, the curved surface mold cavity formed by the curved surface module is used to contact the plate 9. When the plate 9 is placed between the circular arc pressure blade and the curved surface mold cavity, the bending action can be achieved by squeezing between the circular arc pressure blade and the curved surface mold cavity, thereby achieving arc bending of the plate 9. In conjunction with the working mode in the previous embodiment, the present invention can quickly switch between the two working modes through the collaborative controller 3, can switch the bending action without stopping the machine, and achieve bending of different shapes and angles on the plate.

[0027] As an embodiment of the present invention, the straight-face module 21 includes several straight-face modules, and the arc-shaped module 22 includes several curved-face modules, and several of the straight-face modules and the curved-face modules are staggered; the module driving mechanism 23 includes a connector 231 for connecting the single-side straight-face modules, and an electric push rod 232 for driving the connector 231, wherein, when the electric push rod 232 controls the straight-face modules to separate, the curved-face mold cavity formed by the curved-face modules is used to cooperate with the tool head to perform a bending action, and when the electric push rod 232 controls the straight-face modules to close, the V-shaped mold cavity formed by the straight-face modules is used to cooperate with the tool head to perform a bending action. Figure 3As shown in the figure, the straight surface modules on both sides of the present invention are respectively connected together by a connecting member 231, and the connecting member 231 is further driven by an electric push rod 232 to achieve synchronous driving of the straight surface modules on one side. The straight surface modules and the curved surface modules are staggered. During the movement of the straight surface modules, the position of the curved surface modules will not be affected. Therefore, when the straight surface modules are separated, the curved surfaces of the curved surface modules can contact the plate 9 during work; although there are intervals between adjacent curved surface modules and straight surface modules, due to the large number of curved surface modules and straight surface modules distributed in the length direction, when cooperating with the deformable tool set 1 to work, the intermediate intervals will not affect the bending effect. The precise driving of the electric push rod can ensure the synchronous movement of the straight surface modules, thereby realizing accurate cavity switching. It ensures the consistency of the shape and size of the cavity during the bending process, and avoids bending quality problems caused by inaccurate cavity shape, such as inaccurate bending angle, deformation at the bending position, etc.

[0028] As an embodiment of the present invention, it further includes a plate conveying assembly provided on the feeding side of the workbench 4. The plate conveying assembly includes a hydraulic propulsion mechanism 5 located on the feeding side of the workbench 4 and a pneumatic ejection mechanism 6 located on the discharging side of the workbench 4; wherein the hydraulic propulsion mechanism 5 includes a clamping assembly 51 for clamping the plate 9 and a pushing assembly 52 for driving the clamping assembly 51 to move. During work, the plate 9 is placed on the clamping assembly 51, the clamping assembly 51 is controlled to clamp the plate 9, and then the clamping assembly 51 is driven to move by the hydraulic propulsion mechanism 5, driving one end of the plate 9 to move into the working cavity. The clamping assembly 51 releases the plate 9 and resets under the drive of the hydraulic propulsion mechanism 5. After the bending action is completed, the pneumatic ejection mechanism 6 works to eject the bent plate 9, and then the worker removes the bent plate 9. The automated conveying method adopted in this embodiment reduces the direct contact between workers and the equipment, reducing the risk of accidental accidents during the operation. In traditional manual operations, workers need to approach the workbench to carry the plate during the operation of the equipment, which is prone to safety accidents such as collisions and squeezes. And this technical solution enables workers to stay away from the dangerous area of the equipment through automated conveying, improving the safety of equipment operation.

[0029] As an embodiment of the present invention, it further includes a support table 7 and a lifting mechanism 8 for controlling the lifting of the support table 7. The lifting mechanism 8 is linked with the bending stroke. During the process of the tool head performing a bending action on one end of the plate 9, the lifting mechanism 8 controls the support table 7 to gradually rise to support the other end of the plate 9. As Figure 5As shown in the figure, during operation, with the extrusion between the deformable tool set 1 and the deformable die set 2, one end of the sheet 9 will be bent, and the other end will lift up as the bending action progresses. At this time, the lifting mechanism 8 controls the support table 7 to rise to provide support for the sheet 9, preventing the other end of the sheet 9 from bending and deforming under the action of gravity. It should be noted that in the foregoing embodiment, the hydraulic propulsion mechanism 5 will pass above the support table 7 during the process of conveying the sheet 9, but will not touch it. The bending action of the sheet 9 and the rising action of the support table will only start after the hydraulic propulsion mechanism resets. The lifting action of the support table 7 is linked to the bending stroke, making the entire bending process smoother and more continuous. During the bending process, the support table 7 can automatically provide necessary support, avoiding the bending of the sheet, and at the same time reducing the additional energy consumption required for the tool head to overcome the lever effect of the sheet 9 during the bending action.

[0030] As an implementation manner of the present invention, the lifting mechanism 8 includes a first telescopic rod 81 close to the deformable die set 2 and a second telescopic rod 82 far from the deformable die set 2, and the elongation speed of the second telescopic rod 82 is greater than that of the first telescopic rod 81. Due to the elongation speed difference between the first telescopic rod 81 and the second telescopic rod 82, the angle between the support table 7 and the horizontal plane gradually increases, so as to adapt to the lifting angle of the sheet 9. Different bending processes may result in different lifting angles of the sheet. In this example, the elongation speed difference between the first telescopic rod 81 and the second telescopic rod 82 can be adjusted according to actual production requirements, and then the inclination angle of the support table 7 can be flexibly changed to adapt to the requirements of various different bending processes. This enables the equipment to be widely used in various different bending scenarios, enhancing the versatility of the equipment.

[0031] As an implementation manner of the present invention, the lifting and driving mechanism 11 is a hydraulic rod. Both the first tool head 12 and the second tool head 13 are driven by hydraulic rods and can have sufficient force for the bending action.

[0032] Please refer to Figures 1 to 5 , the working process of the present invention is as follows:

[0033] When the equipment is started, the straight surface module 21 and the arc module 22 are in the initial position, and the lifting mechanism 8 controls the support table 7 to be in the lowest position. Place the sheet 9 on the clamping assembly 51 of the hydraulic propulsion mechanism 5. The clamping assembly 51 clamps the sheet 9, and the hydraulic propulsion mechanism 5 drives the clamping assembly 51 to move along the feeding direction of the workbench 4, sending one end of the sheet 9 into the working cavity. After the sheet 9 is sent into the working cavity, the clamping assembly 51 releases the sheet 9, and the hydraulic propulsion mechanism 5 resets to prepare for the next feeding. According to the required bending type (V-shaped or arc-shaped), the controller 3 cooperates to switch the working mode and control the actions of relevant components:

[0034] The first working mode (V-bending mode): The cooperative controller 3 controls the two first cutting heads 12 to press downwards, and at the same time drives the module driving mechanism 23 to close the straight surface module 21. The lower end surfaces of the first cutting heads 12 form a V-shaped pressing edge, and the straight surface module 21 closes to form a matching V-shaped die cavity. The sheet material 9 is placed between the V-shaped pressing edge and the V-shaped die cavity, and the V-shaped bending is completed through the extrusion of the V-shaped pressing edge and the V-shaped die cavity. The lifting mechanism 8 controls the support table 7 to rise according to the bending progress to support the other end of the sheet material 9 and prevent it from warping and deforming due to gravity.

[0035] The second working mode (arc-bending mode): The cooperative controller 3 synchronously drives the two first cutting heads 12 and the two second cutting heads 13 to press downwards, and at the same time controls the module driving mechanism 23 to separate the straight surface module 21. The arc-shaped curved surface of the second cutting head 13 cooperates with the V-shaped pressing edge of the first cutting head 12 to form an arc-shaped pressing edge, and the arc-shaped module 22 forms a curved surface die cavity. The sheet material 9 is placed between the arc-shaped pressing edge and the curved surface die cavity, and the arc-shaped bending is completed through extrusion. The first telescopic rod 81 and the second telescopic rod 82 of the lifting mechanism 8 extend at different speeds, so that the included angle between the support table 7 and the horizontal plane gradually increases to adapt to the warping angle of the sheet material 9 and ensure the stability of the other end of the sheet material 9 during the bending process.

[0036] After the bending action is completed, the cooperative controller 3 controls the tool group and the die group to reset, and the pneumatic ejecting mechanism 6 works to eject the bent sheet material 9 from the working cavity to the discharging side of the workbench 4, and the worker removes the bent sheet material 9 to complete the entire bending process.

[0037] The above are only the preferred embodiments of the present invention. The present invention may have other forms of embodiments according to the above preparation methods, which will not be listed one by one. Therefore, any person skilled in the art, without departing from the scope of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A multi-modal sheet metal bending machine, characterized in that: It includes a deformable tool set (1), a deformable die set (2), a cooperative controller (3), and a workbench (4) with a working cavity. The deformable tool set (1) includes four independent tool heads and a lifting drive mechanism (11). The lifting drive mechanism (11) is provided at the top of the working cavity and independently drives each tool head to move vertically. Among them, the lower end faces of the two first tool heads (12) located in the middle intersect to form a V-shaped pressing edge; the lower end faces of the two second tool heads (13) located on both sides are arc-shaped curved surfaces, and the arc-shaped curved surfaces are conformally arranged with the V-shaped pressing edge to form an arc-shaped pressing edge. The deformable die set (2) is provided at the bottom of the working cavity and includes: Straight surface modules (21) on both sides, and the working surface of the straight surface modules (21) is a straight surface. Arc-shaped modules (22) on both sides, and the working surface of the arc-shaped modules (22) is a curved surface. The arc-shaped modules (22) and the straight surface modules (21) are arranged in an interleaved sliding manner. When the straight surface modules (21) slide towards the middle and extend out of the arc-shaped modules (22), a V-shaped die cavity can be formed. When the straight surface modules (21) withdraw towards both sides to make the arc-shaped modules (22) extend relatively, a curved surface die cavity can be formed. A module drive mechanism (23) for driving the straight surface modules (21). The deformable tool set (1) and the deformable die set (2) cooperate to realize the bending of the sheet. The cooperative controller (3) is used to control the lifting drive mechanism (11) and the module drive mechanism (23) to realize the execution and switching of the V-shaped bending action and the arc-shaped bending action.

2. The multimodal sheet bending machine according to claim 1, wherein: In the first working mode, the cooperative controller (3) synchronously drives the two first tool heads (12) to press down and closes the straight surface modules (21) on both sides.

3. The multimodal sheet metal bending machine according to claim 1, characterized in that: In the second working mode, the cooperative controller (3) synchronously drives the two first tool heads (12) and the two second tool heads (13) to press down and separates the straight surface modules (21) on both sides, so that the sheet (9) does not contact the working surface of the straight surface modules (21) during the bending process.

4. The multimodal sheet metal bending machine according to claim 1, characterized in that: The straight surface modules (21) include a number of straight surface modules, and the arc-shaped modules (22) include a number of curved surface modules. The number of straight surface modules and the number of curved surface modules are distributed in an interleaved manner; the module drive mechanism (23) includes a connecting member (231) that connects the unilateral straight surface modules and an electric push rod (232) for driving the connecting member; among them, when the electric push rod (232) controls the straight surface modules to separate, the curved surface die cavity formed by the curved surface modules is used to cooperate with the tool heads for the bending action. When the electric push rod (232) controls the straight surface modules to close, the V-shaped die cavity formed by the straight surface modules is used to cooperate with the tool heads for the bending action.

5. The multimodal sheet bending machine according to claim 1, wherein: It further includes a sheet conveying assembly provided on the feeding side of the workbench (4). The sheet conveying assembly includes a hydraulic propulsion mechanism (5) located on the feeding side of the workbench (4) and a pneumatic ejection mechanism (6) located on the discharging side of the workbench (4); among them, the hydraulic propulsion mechanism (5) includes a clamping assembly (51) for clamping the sheet (9) and a pushing assembly (52) for driving the clamping assembly (51) to move.

6. The multimodal sheet metal bending machine according to claim 1, characterized in that: It further includes a support platform (7) and a lifting mechanism (8) for controlling the lifting of the support platform (7). The lifting mechanism (8) is linked to the bending stroke. During the process of the tool head performing a bending action on one end of the sheet material (9), the lifting mechanism (8) controls the support platform (7) to gradually rise to support the other end of the sheet material (9).

7. The multimodal sheet metal bending machine according to claim 6, characterized in that: The lifting mechanism (8) includes a first telescopic rod (81) close to the deformable die set (2) and a second telescopic rod (82) away from the deformable die set (2). The elongation speed of the second telescopic rod (82) is greater than that of the first telescopic rod (81).

8. A multi-modal sheet metal bending machine according to claim 1, characterized in that: The lifting drive mechanism (11) is a hydraulic rod.

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