Numerical control bending device for environment-friendly ventilation pipeline
By using a servo motor-driven CNC bending device, combined with a lead screw, pneumatic cylinder, and gear structure, the low efficiency and low precision problems of traditional ventilation duct bending methods are solved, enabling high-quality, high-speed production of ventilation ducts that can adapt to various specifications and materials and meet environmental protection standards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HONGXIN ENVIRONMENTAL PROTECTION EQUIP CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional ventilation duct bending methods suffer from low production efficiency, low precision, poor adaptability, and difficulty in meeting high-quality and diversified needs, as well as failing to meet environmental protection standards.
The CNC bending device, driven by a servo motor, combines a lead screw, pneumatic cylinder, and gear structure to precisely control the bending angle and position of the ventilation duct. It is equipped with shock-absorbing pads and a rubber anti-slip layer to improve stability and fixation.
It achieves high-precision and high-speed bending of ventilation ducts, ensuring consistent product quality, improving production efficiency, adapting to various specifications and materials, meeting environmental standards, and reducing production costs.
Smart Images

Figure CN224195670U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of environmentally friendly ventilation duct technology, and in particular to a CNC bending device for environmentally friendly ventilation ducts. Background Technology
[0002] In the manufacturing process of environmentally friendly ventilation ducts, the bending process is a crucial step. With the increasing awareness of environmental protection and the booming development of the construction industry, the demand for environmentally friendly ventilation ducts is growing, and higher requirements are being placed on the quality, precision, and production efficiency of these ducts.
[0003] Traditional methods of bending ventilation ducts have many drawbacks. In the early days, manual bending was often used. This method not only consumes a lot of manpower and time, resulting in extremely low production efficiency, but also the bending accuracy depends entirely on the individual experience and skill level of the workers. It is difficult to guarantee the consistency of bending angles and dimensions, leading to inconsistent product quality. In actual installation and use, problems such as loose connections and air leakage are prone to occur, affecting the overall performance of the ventilation system.
[0004] The subsequent emergence of simple mechanical bending equipment, while improving production efficiency to some extent, still has significant shortcomings. These devices are often simple in structure, have low automation, and cannot achieve precise control over the bending process. They are poorly adaptable when bending ventilation ducts of different specifications and materials, making it difficult to meet diverse production needs. For example, for some thicker or special-material environmental ventilation ducts, existing equipment may not provide sufficient bending force, resulting in unsatisfactory bending effects or even damage to the ducts.
[0005] Furthermore, with increasingly stringent environmental standards, the requirements for the sealing and durability of ventilation ducts are also rising. Traditional bending processes and equipment struggle to meet these high standards, thus limiting the development of the environmentally friendly ventilation duct industry. To improve the production quality and efficiency of environmentally friendly ventilation ducts and meet market demand for high-quality ducts, the development of a high-precision, high-efficiency, and highly adaptable CNC bending device is urgently needed. Utility Model Content
[0006] The purpose of this invention is to solve the above-mentioned problems by providing a CNC bending device for environmentally friendly ventilation ducts.
[0007] To address the aforementioned problems, this utility model provides a technical solution: a CNC bending device for environmentally friendly ventilation ducts, comprising a housing, support legs, a sliding groove, a motor, a lead screw, a first bearing, a moving plate, a fixed base, a clamping sleeve, a guide rod, a limiting block, a second bearing, a screw, a handwheel, an installation platform, reinforcing ribs, and bending components; several support legs are fixedly connected around the lower surface of the housing; a sliding groove is fixedly connected to the bottom surface of the housing cavity; a motor is fixedly connected to the left side of the housing cavity; a lead screw is fixedly connected to the output end of the motor; the other end of the lead screw is movably connected to the right side of the housing cavity via a first bearing; and a threaded connection is provided on the lead screw. A movable plate has its end slidably connected to a groove; an installation platform is fixedly connected to the top of the movable plate, and a reinforcing rib is fixedly connected between the installation platform and the movable plate; a bending assembly is provided on the installation platform; a fixed seat is fixedly connected to the left side of the upper surface of the cover; a ferrule is provided in the cavity of the fixed seat, and guide rods are fixedly connected to both sides of the ferrule; the guide rods are slidably connected to the upper end of the fixed seat, and limit blocks are fixedly connected to the top of the guide rods; a screw is threadedly connected to the middle of the upper end of the fixed seat, a handwheel is fixedly connected to the top of the screw, and the end of the screw is movably connected to the center position of the ferrule through a second bearing.
[0008] Preferably, the bending assembly comprises a gear, a rotating disk, clamps, a pneumatic cylinder, a rack, a third bearing, and a rotating shaft. The lower end of the gear is integrally formed with a rotating shaft, which is movably connected to the mounting platform via the third bearing. The upper end of the gear is fixedly connected to a rotating disk, and two symmetrically distributed clamps are fixedly connected to the upper surface of the rotating disk. A pneumatic cylinder is fixedly connected to the right side of the upper surface of the mounting platform, and a rack is fixedly connected to the output end of the pneumatic cylinder. The rack and the gear mesh together.
[0009] Preferably, the motor is a servo motor, which can precisely control the rotation angle and speed of the lead screw, and thus precisely control the moving distance and speed of the moving plate.
[0010] Preferably, the bottom of the support leg is provided with a shock-absorbing pad to reduce the impact of vibrations generated during device operation on the surrounding environment, while improving the stability of the device.
[0011] Preferably, the inner wall of the sleeve is provided with a rubber anti-slip layer.
[0012] Preferably, the limiting block is disc-shaped and its diameter is larger than that of the guide rod to prevent the guide rod from detaching from the fixed seat.
[0013] The beneficial effects of this utility model are as follows: (1) High-precision bending: The servo motor drives the lead screw, which can accurately control the rotation angle and speed of the lead screw, and thus accurately control the moving distance and speed of the moving plate. This makes the control of the bending position and angle of the ventilation duct more precise during the bending process, effectively solving the problem that traditional manual bending or simple mechanical bending equipment cannot guarantee the consistency of bending accuracy, greatly improving the bending quality of the ventilation duct, ensuring that the product is tightly connected and well sealed during installation and use, and improving the overall performance of the ventilation system.
[0014] (2) High-efficiency production: This CNC bending device has a high degree of automation. Through the coordinated operation of components such as motors, lead screws, and pneumatic cylinders, it can achieve rapid bending processing of ventilation ducts. Compared with the traditional manual bending method, it greatly saves labor and time costs, significantly improves production efficiency, and can meet the growing market demand for environmentally friendly ventilation ducts.
[0015] (3) High adaptability: The unique design of the bending components, such as gears, racks, rotating disks and clamps, makes them suitable for bending environmentally friendly ventilation ducts of various specifications and materials. Whether it is a duct of normal thickness or a duct of greater thickness or special material, it can be effectively bent by adjusting the device parameters, thus broadening the applicability of the device.
[0016] (4) Good stability: The bottom of the support leg is equipped with shock-absorbing pads, which reduces the impact of vibration generated during the operation of the device on the surrounding environment and improves the stability of the device itself. During the bending process, the stable device can ensure that the processing accuracy is not affected by vibration, extend the service life of the device, and ensure the smooth progress of the production process.
[0017] (5) Excellent anti-slip fixing effect: The inner wall of the sleeve is equipped with a rubber anti-slip layer, which can effectively increase friction when fixing the ventilation duct, prevent the duct from sliding during bending, ensure the accuracy and stability of the bending process, and further improve product quality.
[0018] (6) Reasonable structural design: The limiting block is designed as a disc with a diameter larger than that of the guide rod, which can prevent the guide rod from detaching from the fixed seat and ensure the stability and reliability of the sleeve during the lifting process. In addition, the overall structure of the device is compact and the layout is reasonable. There are reinforcing ribs between the installation platform and the moving plate, which enhances the structural strength and makes the device more stable during operation. At the same time, the device has a simple structure, low production cost, and is easy to install, making it easy to promote and apply. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model.
[0020] Figure 2 This is a cross-sectional view of the side of the fixing base of this utility model.
[0021] Figure 3 This is a top view of the bending component of this utility model.
[0022] Figure 4 This utility model Figure 1 A partially enlarged structural diagram.
[0023] 1-Cover; 2-Support leg; 3-Slide groove; 4-Motor; 5-Screw rod; 6-First bearing; 7-Moving plate; 8-Fixed seat; 9-Clip sleeve; 10-Guide rod; 11-Limit block; 12-Second bearing; 13-Screw rod; 14-Handwheel; 15-Mounting platform; 16-Reinforcing rib; 17-Gear; 18-Rotating disk; 19-Clamping device; 20-Pneumatic cylinder; 21-Rack; 22-Third bearing; 23-Shaft. Detailed Implementation
[0024] like Figures 1 to 4 As shown, this specific embodiment adopts the following technical solution: A CNC bending device for environmentally friendly ventilation ducts includes a housing 1, support legs 2, a sliding groove 3, a motor 4, a lead screw 5, a first bearing 6, a moving plate 7, a fixed seat 8, a clamping sleeve 9, a guide rod 10, a limiting block 11, a second bearing 12, a screw 13, a handwheel 14, a mounting platform 15, reinforcing ribs 16, and a bending assembly; several support legs 2 are fixedly connected around the lower surface of the housing 1; a sliding groove 3 is fixedly connected to the bottom surface of the interior of the housing 1; a motor 4 is fixedly connected to the left side of the interior of the housing 1; a lead screw 5 is fixedly connected to the output end of the motor 4; the other end of the lead screw 5 is movably connected to the right side of the interior of the housing 1 through the first bearing 6; a moving plate 7 is threadedly connected to the lead screw 5. The end of the movable plate 7 is slidably connected in the groove 3; an installation platform 15 is fixedly connected to the top of the movable plate 7, and a reinforcing rib 16 is fixedly connected between the installation platform 15 and the movable plate 7. A bending assembly is provided on the installation platform 15; a fixed seat 8 is fixedly connected to the left side of the upper surface of the cover 1; a sleeve 9 is provided in the cavity of the fixed seat 8, and guide rods 10 are fixedly connected to both sides of the sleeve 9. The guide rods 10 are slidably connected to the upper end of the fixed seat 8, and limit blocks 11 are fixedly connected to the top of the guide rods 10; a screw 13 is threadedly connected to the middle of the upper end of the fixed seat 8, and a handwheel 14 is fixedly connected to the top of the screw 13. The end of the screw 13 is movably connected to the center position of the sleeve 9 through a second bearing 12.
[0025] like Figures 1 to 4As shown, the specific structure of the bending assembly includes a gear 17, a rotating disk 18, a clamping element 19, a pneumatic cylinder 20, a rack 21, a third bearing 22, and a rotating shaft 23. The lower end of the gear 17 is integrally formed with a rotating shaft 23, which is movably connected to the mounting platform 15 via the third bearing 22. The upper end of the gear 17 is fixedly connected to the rotating disk 18, and two symmetrically distributed clamping elements 19 are fixedly connected to the upper surface of the rotating disk 18. The right side of the upper surface of the mounting platform 15 is fixedly connected to the pneumatic cylinder 20, and a rack 21 is fixedly connected to the output end of the pneumatic cylinder 20. The rack 21 meshes with the gear 17.
[0026] Among them, the motor 4 is a servo motor, which can precisely control the rotation angle and speed of the lead screw 5, and thus precisely control the moving distance and speed of the moving plate 7; the bottom of the support leg 2 is provided with a shock-absorbing pad to reduce the impact of vibration generated during the operation of the device on the surrounding environment, and at the same time improve the stability of the device; the inner wall of the sleeve 9 is provided with a rubber anti-slip layer; the limiting block 11 is disc-shaped and its diameter is larger than the diameter of the guide rod 10 to prevent the guide rod 10 from detaching from the fixed seat 8.
[0027] The usage state of this utility model is as follows: (1) Power drive and mobile positioning: The motor 4 (servo motor) is used as the power source and is installed on the left side of the cavity of the cover 1. After the motor 4 is started, its output end drives the lead screw 5 to rotate. The other end of the lead screw 5 is movably connected to the right side of the cavity of the cover 1 through the first bearing 6 to ensure that the lead screw 5 rotates stably. The lead screw 5 is threadedly connected to the moving plate 7. The end of the moving plate 7 slides in the slide groove 3. The slide groove 3 is fixed to the bottom surface of the cavity of the cover 1 and plays a guiding role to prevent the moving plate 7 from rotating with the lead screw 5. By controlling the rotation angle and speed of the motor 4, the rotation of the lead screw 5 can be precisely controlled, thereby precisely controlling the moving distance and speed of the moving plate 7 in the slide groove 3, realizing the precise positioning of the installation platform 15, and providing a precise positional basis for subsequent bending operations.
[0028] (2) Pipe fixing and height adjustment: A retaining sleeve 9 is provided in the fixing seat 8 on the left side of the upper surface of the cover 1. The guide rods 10 connected to both sides of the retaining sleeve 9 slide on the upper end of the fixing seat 8. The limiting block 11 (disc-shaped, with a diameter larger than the guide rod 10) at the top of the guide rod 10 can prevent the guide rod 10 from disengaging from the fixing seat 8. Turn the handwheel 14 to drive the screw 13 to rotate. The screw 13 is movably connected to the center position of the retaining sleeve 9 through the second bearing 12. Due to the thread action, the retaining sleeve 9 will move up and down in the cavity of the fixing seat 8. Place the environmentally friendly ventilation pipe to be bent in the retaining sleeve 9. Use the rubber anti-slip layer on the inner wall of the retaining sleeve 9 to increase friction and firmly fix the pipe.
[0029] (3) Bending Operation: The installation platform 15 is equipped with a bending assembly, mainly including a gear 17, a rotating disk 18, a clamp 19, a pneumatic cylinder 20, a rack 21, a third bearing 22, and a rotating shaft 23. The rotating shaft 23 at the lower end of the gear 17 is movably connected to the installation platform 15 through the third bearing 22 and can rotate freely. The upper end of the gear 17 is fixedly connected to the rotating disk 18, and the clamps 19 symmetrically distributed on the rotating disk 18 are used to clamp the ventilation duct. After the pneumatic cylinder 20 on the right side of the upper surface of the installation platform 15 is started, its output end pushes the rack 21 to move. The rack 21 meshes with the gear 17, thereby driving the gear 17 to rotate. When the gear 17 rotates, the rotating disk 18 and the clamp 19 rotate accordingly, applying bending force to the fixed ventilation duct to realize the bending operation of the duct. By controlling the extension and retraction of the pneumatic cylinder 20 and the movement of the moving plate 7 driven by the motor 4, the bending angle and position can be adjusted to meet different bending requirements.
[0030] (4) Stability assurance: The support leg 2 is fixed around the lower surface of the cover 1. The shock-absorbing pad at the bottom can reduce the impact of the vibration generated by the device during operation on the surrounding environment, while improving the stability of the device itself, ensuring that the entire device can operate stably during bending without being disturbed by vibration, and ensuring bending accuracy.
[0031] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.
[0034] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.
Claims
1. A CNC bending device for environmentally friendly ventilation ducts, characterized in that: Includes a housing (1), support legs (2), slide rails (3), motor (4), lead screw (5), first bearing (6), moving plate (7), fixed seat (8), ferrule (9), guide rod (10), limit block (11), second bearing (12), screw (13), handwheel (14), mounting platform (15), reinforcing rib (16), and bending assembly; Several support legs (2) are fixedly connected around the lower surface of the cover (1); The bottom surface of the cavity of the cover (1) is fixedly connected to a sliding groove (3), and a motor (4) is fixedly connected to the left side of the cavity of the cover (1). A lead screw (5) is fixedly connected to the output end of the motor (4), and the other end of the lead screw (5) is movably connected to the right side of the cavity of the cover (1) through a first bearing (6). A movable plate (7) is threadedly connected to the lead screw (5), and the end of the movable plate (7) is slidably connected in the groove (3); An installation platform (15) is fixedly connected to the top of the movable plate (7), and a reinforcing rib (16) is fixedly connected between the installation platform (15) and the movable plate (7). A bending component is provided on the installation platform (15). A fixing seat (8) is fixedly connected to the left side of the upper surface of the cover (1); The cavity of the fixed seat (8) is provided with a sleeve (9), and guide rods (10) are fixedly connected to both sides of the sleeve (9). The guide rods (10) are slidably connected to the upper end of the fixed seat (8), and limit blocks (11) are fixedly connected to the top of the guide rods (10). The upper middle of the fixed base (8) is connected to a screw (13) by a thread. The top end of the screw (13) is fixedly connected to a handwheel (14). The end of the screw (13) is movably connected to the center of the sleeve (9) by a second bearing (12).
2. The CNC bending device for environmentally friendly ventilation ducts according to claim 1, characterized in that: The specific structure of the bending assembly includes a gear (17), a rotating disk (18), a clamp (19), a pneumatic cylinder (20), a rack (21), a third bearing (22), and a rotating shaft (23). The lower end of the gear (17) is integrally formed with a rotating shaft (23), and the rotating shaft (23) is movably connected to the mounting platform (15) through a third bearing (22); The upper end of the gear (17) is fixedly connected to a rotating disk (18), and two symmetrically distributed clips (19) are fixedly connected to the upper surface of the rotating disk (18). A pneumatic cylinder (20) is fixedly connected to the right side of the upper surface of the installation platform (15). A rack (21) is fixedly connected to the output end of the pneumatic cylinder (20). The rack (21) and the gear (17) mesh together.
3. The CNC bending device for environmentally friendly ventilation ducts according to claim 1, characterized in that: The motor (4) is a servo motor, which can precisely control the rotation angle and speed of the lead screw (5), and thus precisely control the moving distance and speed of the moving plate (7).
4. The CNC bending device for environmentally friendly ventilation ducts according to claim 1, characterized in that: The bottom of the support leg (2) is provided with a shock-absorbing pad to reduce the impact of vibration generated during the operation of the device on the surrounding environment and improve the stability of the device.
5. The CNC bending device for environmentally friendly ventilation ducts according to claim 1, characterized in that: The inner wall of the sleeve (9) is provided with a rubber anti-slip layer.
6. The CNC bending device for environmentally friendly ventilation ducts according to claim 1, characterized in that: The limiting block (11) is disc-shaped and its diameter is larger than that of the guide rod (10) to prevent the guide rod (10) from detaching from the fixed seat (8).