An adjustable angle positioning device for a bending machine
Patent Information
- Application Number
- CN202522460313.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-20
AI Technical Summary
Existing screw-set screw structures struggle to balance efficiency and precision when adjusting the angle of a bending machine. Using a large-pitch screw makes fine-tuning difficult, while using a small-pitch screw results in low efficiency.
A combination of coarse and fine adjustment screws is used. The coarse adjustment screw is used for rapid large-angle adjustment, while the fine adjustment screw is used for precise fine adjustment. Combined with a movable block, adjusting slide rail, and slider, it achieves fast and efficient angle adjustment, and maintains stability through thread self-locking.
This approach achieves improved adjustment efficiency while maintaining adjustment accuracy, avoids excessive operation, and ensures the precision and stability of the angle.
Smart Images
Figure CN224926799U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of adjustable angle bending equipment, specifically an adjustable angle positioning device for a bending machine. Background Technology
[0002] In the field of sheet metal processing, bending machines are an indispensable key piece of equipment. They manufacture various structural components and product shells by bending flat metal into specific angles. The precision and consistency of the bending angle directly determine the quality of the final product, the smoothness of assembly, and the overall aesthetics.
[0003] Currently, a common mechanical solution in the industry for positioning and adjusting bending angles is to use a screw-set screw structure. This involves manually rotating a screw to make its end press against or pull a movable baffle or hinge mechanism, thereby changing the angle of the baffle and using it as a reference for bending the sheet metal.
[0004] However, existing technologies still have shortcomings in use: the traditional screw set screw structure often makes it difficult to balance efficiency and accuracy in the adjustment process; if a large pitch screw is used to achieve rapid adjustment, fine-tuning is difficult, and repeated corrections are easily made due to excessive operation, making it difficult to accurately control small angles; if a small pitch screw is used to ensure accuracy, the adjustment speed is slow and the efficiency is low when changing large angles. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide an adjustable angle positioning device for a bending machine. By coarse adjustment screw and fine adjustment screw working together, the adjustment efficiency can be improved while ensuring the adjustment accuracy, which can effectively solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable angle positioning device for a bending machine, comprising a bending platform, a fastening assembly and a bending assembly disposed on the bending platform, an angle adjustment plate rotatably disposed at one end of the bending platform via a rotating shaft, an adjustment slide rail disposed along the length direction on the side of the angle adjustment plate facing the bending platform, a matching adjustment slider slidably disposed on the adjustment slide rail, the side of the adjustment slider being rotatably connected to one end of a movable block via a rotating shaft, a movable slot being provided on the movable block, an internal threaded cylinder disposed on the lower surface of the bending platform via a connecting block, a coarse adjustment screw being threadedly connected inside the internal threaded cylinder, a fine adjustment screw being rotatably disposed in a groove at the end of the coarse adjustment screw facing the movable block via a bearing, the fine adjustment screw penetrating the movable block and being threadedly connected to the movable block, the fine adjustment screw extending into the movable slot on the movable block, the pitch of the coarse adjustment screw being greater than the pitch of the fine adjustment screw. Rotating the coarse adjustment screw, due to its threaded engagement with the internal threaded cylinder, converts its rotational motion into axial forward movement. The coarse adjustment screw, via a bearing in its end groove, pushes the fine adjustment screw to move axially as well. The fine adjustment screw drives the movable block, and the movement of the movable block is transmitted to the adjusting slider via the second rotating shaft. This forces the adjusting slider to slide along the adjusting rail on the angle adjusting plate, driving the angle adjusting plate to rotate significantly around the first rotating shaft. This allows for rapid adjustment to a large angle close to the target value. Because the coarse adjustment screw has a large pitch, this process is fast, and the coarse adjustment is completed quickly. Then, rotate the fine-tuning screw, which causes the movable block to produce a tiny displacement. This tiny movement is transmitted through the second rotating shaft, the adjusting slider, and the adjusting slide rail, ultimately causing the angle adjusting plate to rotate around the first rotating shaft in an extremely small rotation. Because the pitch of the fine-tuning screw is very small, the angle change caused by one rotation is very limited, thus achieving fine adjustment of the bending angle. When the angle adjusting plate is precisely adjusted to the target angle, the fastening assembly can be activated to press the plate, and the bending assembly can be activated to complete the bending operation. Throughout the bending process, the angle remains stable due to the self-locking characteristics of the thread.
[0007] Furthermore, the pitch of the coarse adjustment screw is greater than twice the pitch of the fine adjustment screw. The angular change caused by one rotation of the coarse adjustment screw is at least twice the angular change caused by one rotation of the fine adjustment screw.
[0008] Furthermore, a limit block is provided at one end of the fine-tuning screw facing the angle adjustment plate. When the fine-tuning screw rotates, the limit block will eventually contact the movable groove on the movable block, preventing the fine-tuning screw from completely disengaging from the threads of the movable block.
[0009] Furthermore, the bending platform is equipped with an angle gauge via a mounting bracket, which cooperates with an angle adjustment plate. When the angle adjustment plate rotates, its edge aligns with the scale of the angle gauge, allowing the real-time angle value to be read directly.
[0010] Furthermore, a coarse adjustment rudder is provided at the end of the coarse adjustment screw away from the angle adjustment plate, and a fine adjustment handwheel is provided at the end of the fine adjustment screw away from the angle adjustment plate. The coarse adjustment rudder increases the lever arm, making it easier to rotate the coarse adjustment screw and improving coarse adjustment efficiency, while the fine adjustment handwheel facilitates the application of fine torque to achieve precise fine adjustment.
[0011] Furthermore, the fastening assembly is a fastening hydraulic cylinder mounted above the bending platform. The fastening hydraulic cylinder is mounted on the bending platform via a fastening frame, and its telescopic end is equipped with a fastening plate that cooperates with the bending platform. The fastening hydraulic cylinder is fixed above the bending platform by the fastening frame, and its telescopic end drives the fastening plate to move downward, pressing and fixing the sheet metal to be bent onto the bending platform.
[0012] Furthermore, the bending assembly is a bending support frame disposed on one end of the bending platform near the angle adjustment plate. A bending hydraulic cylinder is disposed on the bending support frame, and a bending block is disposed on the telescopic end of the bending hydraulic cylinder. The bending hydraulic cylinder is fixed by the bending support frame, and its telescopic end drives the bending block to move downward, applying pressure to the fastened sheet metal, so that it completes bending on the angle adjustment plate.
[0013] Furthermore, the bottom surface of the bending block is a smooth, arc-shaped surface. This smooth, arc-shaped surface prevents scratches or damage to the surface of the sheet material during the bending process.
[0014] Based on the above technical solution, the beneficial effects achieved by the adjustable angle positioning device for bending machines of this utility model through practical application are as follows: This invention utilizes a coarse adjustment screw, a fine adjustment screw, a movable block, an adjustment rail, and an adjustment slider. When making large angle adjustments, the operator only needs to rotate the coarse adjustment screw. Due to its large pitch, one rotation drives the movable block to produce a significant displacement. This, in turn, through the transmission of the adjustment slider and the adjustment rail, causes the angle adjustment plate to rotate rapidly, significantly improving adjustment efficiency. When precise angle adjustment is required, the fine adjustment screw is rotated. Its small pitch means that one rotation only causes a tiny displacement of the movable block, thus achieving fine and gradual adjustment of the angle adjustment plate. This effectively avoids excessive operation and ensures the accuracy of the final angle. Attached Figure Description
[0015] Figure 1 This is a front-view three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention.
[0017] Figure 3 This is a top-view three-dimensional structural diagram of the angle adjustment component in this utility model.
[0018] In the diagram: 1-Bending platform, 2-Fastening frame, 3-Fastening hydraulic cylinder, 4-Fastening plate, 5-Bending support frame, 6-Bending hydraulic cylinder, 7-Bending block, 8-Angle adjustment plate, 9-Coarse adjustment rudder, 10-Coarse adjustment screw, 11-Internal threaded cylinder, 12-Connecting block, 13-Fine adjustment handwheel, 14-Moving block, 15-Moving groove, 16-Adjusting slide rail, 17-Mounting bracket, 18-Angle ruler, 19-Adjusting slider, 20-Limit block, 21-Fine adjustment screw. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-3This embodiment provides a technical solution: an adjustable angle positioning device for a bending machine, including a bending platform 1, a fastening assembly and a bending assembly disposed on the bending platform 1. An angle adjusting plate 8 is rotatably mounted on one end of the bending platform 1 via a rotating shaft. An adjusting slide rail 16 is disposed along the length of the side of the angle adjusting plate 8 facing the bending platform 1. A matching adjusting slider 19 is slidably mounted on the adjusting slide rail 16. The side of the adjusting slider 19 is rotatably connected to one end of a movable block 14 via a rotating shaft. An opening is provided on the movable block 14. The bending platform 1 has a movable groove 15. The lower surface of the bending platform 1 is provided with an internal threaded cylinder 11 through a connecting block 12. The internal threaded cylinder 11 is connected to a coarse adjustment screw 10 through a thread. A fine adjustment screw 21 is rotatably provided in a groove opened at one end of the coarse adjustment screw 10 facing the movable block 14 through a bearing. The fine adjustment screw 21 passes through the movable block 14 and is threadedly connected to the movable block 14. The fine adjustment screw 21 extends into the movable groove 15 opened on the movable block 14. The pitch of the coarse adjustment screw 10 is greater than the pitch of the fine adjustment screw 21. Rotating the coarse adjustment screw 10, due to its threaded engagement with the internal threaded cylinder 11, converts its rotational motion into axial forward movement. The coarse adjustment screw 10, through a bearing in its end groove, pushes the fine adjustment screw 21 to move axially as well. The fine adjustment screw 21 drives the movable block 14 to move, and the movement of the movable block 14 is transmitted to the adjusting slider 19 via the second rotating shaft. This forces the adjusting slider 19 to slide along the adjusting rail 16 on the angle adjusting plate 8, driving the angle adjusting plate 8 to rotate significantly around the first rotating shaft, thus quickly adjusting to a large angle close to the target value. Because the coarse adjustment screw 10 has a large pitch, this process is fast. After the coarse adjustment is roughly in place, rotate the fine adjustment screw 21. The fine adjustment screw 21 drives the movable block 14 to produce a small displacement. This small movement is transmitted through the rotating shaft 2, the adjusting slider 19 and the adjusting slide rail 16, and finally causes the angle adjusting plate 8 to produce an extremely small rotation around the rotating shaft 1. Since the pitch of the fine adjustment screw 21 is very small, the angle change brought about by one rotation is very limited, thus achieving fine adjustment of the bending angle. When the angle adjusting plate 8 is precisely adjusted to the target angle, the fastening component can be activated to press the plate and the bending component can be activated to complete the bending operation. During the entire bending process, the angle is kept stable by relying on the self-locking characteristics of the thread.
[0021] Furthermore, the pitch of the coarse adjustment screw 10 is more than twice the pitch of the fine adjustment screw 21. The angular change caused by one revolution of the coarse adjustment screw 10 is at least twice the angular change caused by one revolution of the fine adjustment screw 21.
[0022] Furthermore, a limiting block 20 is provided at one end of the fine-tuning screw 21 facing the angle adjustment plate 8. When the fine-tuning screw 21 rotates, the limiting block 20 will eventually contact the movable groove 15 opened on the movable block 14, preventing the fine-tuning screw 21 from completely disengaging from the thread of the movable block 14.
[0023] Furthermore, the bending platform 1 is equipped with an angle gauge 18 via a mounting bracket 17, which cooperates with the angle adjustment plate 8. When the angle adjustment plate 8 rotates, its edge can be aligned with the scale of the angle gauge 18, thereby directly reading the real-time angle value.
[0024] Furthermore, a coarse adjustment rudder 9 is provided at the end of the coarse adjustment screw 10 away from the angle adjustment plate 8, and a fine adjustment handwheel 13 is provided at the end of the fine adjustment screw 21 away from the angle adjustment plate 8. The coarse adjustment rudder 9 increases the lever arm, making it easier to rotate the coarse adjustment screw 10 and improving the efficiency of coarse adjustment. The fine adjustment handwheel 13 facilitates the application of fine torque to achieve precise fine adjustment.
[0025] Furthermore, the fastening assembly is a fastening hydraulic cylinder 3 installed above the bending platform 1. The fastening hydraulic cylinder 3 is mounted on the bending platform 1 via a fastening frame 2, and the telescopic end of the fastening hydraulic cylinder 3 is equipped with a fastening plate 4 that cooperates with the bending platform 1. The fastening hydraulic cylinder 3 is fixed above the bending platform 1 by the fastening frame 2, and its telescopic end drives the fastening plate 4 to move downward, pressing and fixing the sheet metal to be bent onto the bending platform 1.
[0026] Furthermore, the bending assembly is a bending support frame 5 mounted on the bending platform 1 near one end of the angle adjustment plate 8. A bending hydraulic cylinder 6 is mounted on the bending support frame 5, and a bending block 7 is mounted on the telescopic end of the bending hydraulic cylinder 6. The bending hydraulic cylinder 6 is fixed by the bending support frame 5, and its telescopic end drives the bending block 7 to move downward, applying pressure to the fastened sheet metal, thus completing the bending on the angle adjustment plate 8.
[0027] Furthermore, the bottom surface of the bending block 7 is a smooth, curved surface. This smooth, curved surface prevents scratches or damage to the surface of the sheet material during bending.
[0028] The working principle of the adjustable angle positioning device for a bending machine provided by this utility model is as follows: In use, the sheet metal to be bent is placed on the bending platform 1 and clamped and fixed by the fastening plate 4 driven by the fastening hydraulic cylinder 3. When a significant change in bending angle is required, the operator rotates the coarse adjustment rudder 9, which drives the coarse adjustment screw 10 to rotate. Since the coarse adjustment screw 10 is threadedly engaged with the fixed internal threaded cylinder 11, its rotational motion is converted into its own axial movement. The coarse adjustment screw 10 pushes or pulls the fine adjustment screw 21 axially through the bearing in the groove at its end. The fine adjustment screw 21, through its threaded connection with the movable block 14, drives the movable block 14 to move synchronously along its axis. The movement of the movable block 14 is transmitted through the rotating shaft 2, the adjusting slider 19, and the adjusting slide rail 16, ultimately driving the angle adjusting plate 8 to rotate significantly around the rotating shaft 1. Because the pitch of the coarse adjustment screw 10 is large, the angle change of the angle adjusting plate 8 caused by one rotation is also large, thus achieving fast and efficient coarse adjustment, making the angle... The operator quickly approaches the target value. After coarse adjustment to near the target angle, the operator rotates the fine adjustment handwheel 13, driving the fine adjustment screw 21 to rotate. At this time, the coarse adjustment screw 10 remains stationary, and its position is temporarily fixed. Since the fine adjustment screw 21 and the movable block 14 are threadedly connected, the rotation of the fine adjustment screw 21 will cause it to produce a small displacement, pushing or pulling the movable block 14 to produce a slight movement. Similarly, this slight movement will cause the angle adjustment plate 8 to produce an extremely small and precise rotation, realizing precise fine adjustment of the angle. When the angle adjustment plate 8 is precisely adjusted to the target angle, the entire adjustment system maintains a stable position by relying on the inherent self-locking characteristics of the threaded pair. Subsequently, the bending hydraulic cylinder 6 drives the bending block 7 to apply pressure to the plate, making it press against the inclined surface of the angle adjustment plate 8 to complete the bending. The angle ruler 18 set on the bending platform 1 can be used to provide intuitive angle readings during the adjustment process.
[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An adjustable angle positioning device for a bending machine, comprising a bending platform, and a fastening assembly and a bending assembly disposed on the bending platform, characterized in that: An angle adjustment plate is rotatably mounted on one end of the bending platform via a rotating shaft. An adjustment slide rail is mounted along the length of the side of the angle adjustment plate facing the bending platform. A matching adjustment slider is slidably mounted on the adjustment slide rail. The side of the adjustment slider is rotatably connected to one end of a movable block via a rotating shaft. A movable slot is provided on the movable block. An internally threaded cylinder is mounted on the lower surface of the bending platform via a connecting block. A coarse adjustment screw is threadedly connected inside the internally threaded cylinder. A fine adjustment screw is rotatably mounted in a groove at the end of the coarse adjustment screw facing the movable block via a bearing. The fine adjustment screw passes through the movable block and is threadedly connected to the movable block. The fine adjustment screw extends into the movable slot on the movable block. The pitch of the coarse adjustment screw is greater than the pitch of the fine adjustment screw.
2. The adjustable angle positioning device for a bending machine according to claim 1, characterized in that: The pitch of the coarse adjustment screw is more than twice the pitch of the fine adjustment screw.
3. The adjustable angle positioning device for a bending machine according to claim 1, characterized in that: A limit block is provided at one end of the fine-tuning screw facing the angle adjustment plate.
4. The adjustable angle positioning device for a bending machine according to claim 1, characterized in that: The bending platform is equipped with an angle gauge via a mounting bracket, and the angle gauge works in conjunction with an angle adjustment plate.
5. The adjustable angle positioning device for a bending machine according to claim 1, characterized in that: The coarse adjustment screw is equipped with a coarse adjustment rudder at the end furthest from the angle adjustment plate, and the fine adjustment screw is equipped with a fine adjustment handwheel at the end furthest from the angle adjustment plate.
6. The adjustable angle positioning device for a bending machine according to claim 1, characterized in that: The fastening assembly is a fastening hydraulic cylinder mounted above the bending platform. The fastening hydraulic cylinder is mounted on the bending platform via a fastening bracket, and the telescopic end of the fastening hydraulic cylinder is provided with a fastening plate that cooperates with the bending platform.
7. The adjustable angle positioning device for a bending machine according to claim 1, characterized in that: The bending assembly is a bending support frame installed on one end of the bending platform near the angle adjustment plate. A bending hydraulic cylinder is installed on the bending support frame, and a bending block is installed on the telescopic end of the bending hydraulic cylinder.
8. The adjustable angle positioning device for a bending machine according to claim 7, characterized in that: The bottom surface of the bending block is a smooth, arc-shaped surface.