A special pipe bending machine for oxygen blowing pipe
By designing a special tube bending machine for oxygen blowing, automated and rapid tube bending was achieved, solving the problems of labor-intensive and safety hazards associated with manual operation, improving the accuracy and consistency of tube bending, and ensuring the effectiveness of oxygen blowing operations in the smelting furnace.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JINTIAN SMELTING
- Filing Date
- 2025-06-04
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional manual pipe bending is labor-intensive, inefficient, and poses safety hazards. It is also difficult to guarantee the accuracy and consistency of pipe bending, which affects the oxygen blowing effect of the smelting furnace.
Design a special tube bending machine for oxygen blowing tubes, including a bending mechanism, a drive mechanism, a clamping mechanism and a transmission mechanism. It realizes rapid bending of tubes through automated control, and ensures bending accuracy by combining the start and end point proximity switch detection. The bending wheels can be replaced to adapt to different tube specifications.
It improved production efficiency, eliminated safety hazards of manual operation, ensured the accuracy and consistency of pipe bending, and guaranteed the smelting quality of the smelting furnace.
Smart Images
Figure CN224525691U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe bending machine technology, and in particular to a special pipe bending machine for oxygen blowing pipes. Background Technology
[0002] In traditional smelting furnaces, air needs to be introduced through a pipe inserted at a specific angle during the oxygen blowing process. However, the pipe wall is only 3.5 mm thick and the diameter is only 38 mm. There are no specialized machines available on the market to purchase from this facility.
[0003] Currently, in actual production, pipe bending is entirely done manually. The specific method involves inserting the pipe into a fixed angle steel and gradually bending it by repeatedly pressing down and releasing it. This manual method has many drawbacks. First, it is extremely labor-intensive; the entire bending process requires operators to invest a significant amount of physical strength and time, greatly increasing labor costs and resulting in extremely low work efficiency. Second, manual operation poses certain safety hazards. For example, during the repeated pressing and releasing of the pipe, operators need to be in close contact with the pipe being processed. If careless, this could lead to accidental injuries to the hands or other parts of the body, such as being pinched or bumped by the pipe. Furthermore, manual bending makes it difficult to guarantee the precision and consistency of the bending. Pipes processed by different operators or even different batches processed by the same operator may have significant differences in bending angles and shapes. This could affect the effectiveness of oxygen blowing operations, thus adversely impacting the smelting quality in the furnace. Utility Model Content
[0004] The purpose of this utility model is to provide a special tube bending machine for oxygen blowing tubes to solve the above-mentioned technical problems.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A special tube bending machine for oxygen blowing tubes includes a bending mechanism, a drive mechanism, a clamping mechanism, a transmission mechanism, and a material rack. The drive mechanism and the bending mechanism are provided at one end of the material rack, and the clamping mechanism is installed at the upper end of the material rack.
[0007] The bending mechanism includes a main shaft, a first bending wheel, a rotating shaft, a second bending wheel, and a rocker arm. The first bending wheel is mounted on the main shaft, the second bending wheel is mounted on the rotating shaft, the rocker arm connects the main shaft and the rotating shaft, and the drive mechanism is connected to the main shaft via the transmission mechanism.
[0008] Preferably, the assembly also includes a frame, a bending platform, and an angular contact ball bearing. The bending platform is mounted on the upper end of the frame, the spindle passes through the bending platform, and the spindle is connected to the bending platform via the angular contact ball bearing.
[0009] Preferably, the device also includes a first deep groove ball bearing and a first guide sleeve. The first bending wheel is connected to the main shaft through the first deep groove ball bearing. First end caps are provided on both sides of the first deep groove ball bearing. The first guide sleeve is sleeved on the main shaft. The first guide sleeve abuts against the first deep groove ball bearing and the rocker arm.
[0010] As a further preferred embodiment, the assembly also includes a second deep groove ball bearing, a second guide sleeve, and a bearing housing. The bearing housing is provided between the main shaft and the bending platform. Both the angular contact ball bearing and the second deep groove ball bearing are installed in the bearing housing. The second guide sleeve and the second deep groove ball bearing are sleeved on the main shaft, with the second guide sleeve located between the angular contact ball bearing and the second deep groove ball bearing.
[0011] As a further preferred embodiment, the system also includes a starting proximity switch mounting bracket and an ending proximity switch mounting bracket, both of which are disposed on the bending platform and distributed on both sides of the first bending wheel. The starting proximity switch mounting bracket is located between the two first bending wheels and the second bending wheel.
[0012] As a further preferred embodiment, the transmission mechanism includes a sliding component, a thrust rack, and a gear. The gear is mounted on the main shaft, the sliding component is mounted on the frame, the thrust rack is connected to the sliding component, the thrust rack meshes with the gear, and the drive mechanism is connected to the thrust rack.
[0013] As a further preferred embodiment, the sliding component includes a slide rail and a slider slidably disposed on the slide rail, the thrust rack is connected to the slider, and the slide rail is connected to the bracket.
[0014] As a further preferred embodiment, the clamping mechanism includes a motor, a bidirectional screw, and clamping blocks. The two clamping blocks are located on both sides of the upper end of the material rack. The bidirectional screw passes through the two clamping blocks and is threadedly engaged with the clamping blocks. The output end of the motor is connected to the bidirectional screw.
[0015] The above technical solution has the following advantages or beneficial effects:
[0016] (1) In this utility model, by setting up a bending mechanism, a driving mechanism, a clamping mechanism and a transmission mechanism, the oxygen blowing pipe can be bent quickly and continuously, which can shorten the processing time, improve production efficiency and meet the needs of large-scale production.
[0017] (2) In this utility model, there is no need for manual pipe bending operation. The pipe is placed on the designated position on the material rack by the operator and then automatically clamped by the clamping mechanism. The pipe is then bent by the bending mechanism, which effectively isolates the operator from the pipe bending operation area. There is no need to directly contact the pipe bending process, which fundamentally eliminates the safety hazards such as hand or other body parts being pinched or bumped by the pipe during manual operation, and provides a safer working environment for the operator.
[0018] (3) In this utility model, by setting up the starting point proximity switch mounting bracket and the ending point proximity switch mounting bracket, an infrared sensor can be set on it to detect the starting and ending positions of the pipe bending, so as to achieve precise control of the bending angle. Furthermore, by replacing the first bending wheel and the second bending wheel of different specifications, it can adapt to the bending requirements of oxygen blowing pipes of different diameters and lengths, ensuring that each oxygen blowing pipe can be accurately bent into the required geometric shape, which greatly improves the bending accuracy and thus ensures the effect of oxygen blowing operation in the smelting furnace and the smelting quality. Attached Figure Description
[0019] Figure 1 This is a front view of the oxygen blowing pipe bending machine of this utility model;
[0020] Figure 2 This is a top view of the oxygen blowing tube bending machine of this utility model;
[0021] Figure 3 This is a side view of the oxygen blowing pipe bending machine of this utility model;
[0022] Figure 4 This is a cross-sectional view of the bending mechanism in this utility model;
[0023] Figure 5 This is a schematic diagram of the bending mechanism in this utility model;
[0024] Figure 6 yes Figure 1 Sectional view along the AA direction.
[0025] In the diagram: 1. Bending mechanism; 2. Drive mechanism; 3. Clamping mechanism; 4. Transmission mechanism; 5. Material rack; 6. Main shaft; 7. First bending wheel; 8. Rotating shaft; 9. Second bending wheel; 10. Rocker arm; 11. Frame; 12. Bending platform; 13. Angular contact ball bearing; 14. First deep groove ball bearing; 16. Second deep groove ball bearing; 18. Bearing housing; 19. Starting point proximity switch mounting bracket; 20. Ending point proximity switch mounting bracket; 21. Thrust rack; 22. Gear; 23. Slide rail; 24. Slider; 25. Motor; 26. Bidirectional screw; 27. Clamping block; 28. Positioning block. Detailed Implementation
[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Figure 1 This is a front view of the oxygen blowing pipe bending machine of this utility model; Figure 2 This is a top view of the oxygen blowing tube bending machine of this utility model; Figure 3 This is a side view of the oxygen blowing pipe bending machine of this utility model; Figure 4 This is a cross-sectional view of the bending mechanism in this utility model; Figure 5 This is a structural schematic diagram of the bending mechanism in this utility model. Figure 6 yes Figure 1 For the sectional view along the AA direction, please refer to [link / reference]. Figures 1 to 6The diagram illustrates a preferred embodiment of a special tube bending machine for oxygen blowing pipes. It includes a bending mechanism 1, a drive mechanism 2, a clamping mechanism 3, a transmission mechanism 4, and a material rack 5. The drive mechanism 2 and the bending mechanism 1 are located at one end of the material rack 5, and the clamping mechanism 3 is mounted on the upper end of the material rack 5. In this embodiment, the drive mechanism 2 is a hydraulic cylinder, which can be connected to one side of the frame 11 via bolts. The hydraulic cylinder drives the transmission mechanism 4 to operate the bending mechanism 1, thereby achieving the tube bending operation. The material rack 5 supports the clamping mechanism 3. An external controller, which can be a PLC controller, is also provided. The controller sets the bending angle and shape parameters and controls the drive mechanism 2 to drive the bending mechanism 1 to bend the tube, thereby improving bending accuracy. The controller can also control the clamping mechanism 3 to clamp the tube. For example, control buttons connected to the controller can be provided externally. Signals are sent to the controller via the corresponding control buttons, causing the controller to control either the drive mechanism 2 or the clamping mechanism 3.
[0030] The bending mechanism 1 includes a main shaft 6, a first bending wheel 7, a rotating shaft 8, a second bending wheel 9, and a rocker arm 10. The first bending wheel 7 is mounted on the main shaft 6, and the second bending wheel 9 is mounted on the rotating shaft 8. The rocker arm 10 connects the main shaft 6 and the rotating shaft 8. The drive mechanism 2 is connected to the main shaft 6 via a transmission mechanism 4. In this embodiment, the first bending wheel 7 is detachably mounted on the main shaft 6, and the second bending wheel 9 is detachably mounted on the rotating shaft 8. When the main shaft 6 rotates, it drives the rocker arm 10 to rotate, which in turn drives the second bending wheel 9 to perform a circular motion around the first bending wheel 7, thereby achieving the bending operation of the tube (oxygen blowing tube) placed between the first bending wheel 7 and the second bending wheel 9. In actual operation, by reasonably adjusting the length of the rocker arm 10 and the initial distance between the first bending wheel 7 and the second bending wheel 9, the degree of bending of the oxygen blowing tube can be precisely controlled. In this embodiment, the rocker arm 10 can be bolted to the main shaft 6.
[0031] Furthermore, as a preferred embodiment, it also includes a frame 11, a bending platform 12, and an angular contact ball bearing 13. The bending platform 12 is mounted on the upper end of the frame 11, and the main shaft 6 passes through the bending platform 12. The main shaft 6 is connected to the bending platform 12 via the angular contact ball bearing 13. The bending platform 12 can be bolted to the upper end of the frame 11, and the main shaft 6 vertically passes through the bending platform 12. This embodiment also includes a second deep groove ball bearing 16, a second guide sleeve, and a bearing housing 18. A bearing housing 18 is provided between the main shaft 6 and the bending platform 12. The angular contact ball bearing 13 and the second deep groove ball bearing 16 are both installed in the bearing housing 18. The second guide sleeve (not shown in the figure) and the second deep groove ball bearing 16 are sleeved on the main shaft 6, and the second guide sleeve is located between the angular contact ball bearing 13 and the second deep groove ball bearing 16. The spindle 6, through the bearing housing 18, angular contact ball bearing 13, second guide sleeve, and second deep groove ball bearing 16, cooperates with the bending platform 12, which can reduce the vibration of the spindle 6 during rotation and improve the stability and durability of the entire bending mechanism 1. Among them, the angular contact ball bearing 13 can withstand large axial and radial loads, ensuring the stability and accuracy of the spindle 6 during high-speed rotation.
[0032] Furthermore, as a preferred embodiment, it also includes a first deep groove ball bearing 14 and a first guide sleeve (not shown in the figure). The first bending wheel 7 is connected to the main shaft 6 via the first deep groove ball bearing 14. First end caps are provided on both sides of the first deep groove ball bearing 14. The first guide sleeve is fitted onto the main shaft 6, and the first guide sleeve abuts against the first deep groove ball bearing 14 and the rocker arm 10. In this embodiment, the first end cap can be a dust cover, connected to the first bending wheel 7 by bolts. This can fix the first deep groove ball bearing 14, preventing axial movement without affecting circumferential rotation, and also preventing dust from entering the first deep groove ball bearing 14. The first deep groove ball bearing 14 ensures the flexible rotation of the first bending wheel 7. The first guide sleeve can position the height of the rocker arm 10.
[0033] Furthermore, as a preferred embodiment, it also includes a starting proximity switch mounting bracket 19 and an ending proximity switch mounting bracket 20. Both the starting proximity switch mounting bracket 19 and the ending proximity switch mounting bracket 20 are disposed on the bending platform 12 and distributed on both sides of the first bending wheel 7. The starting proximity switch mounting bracket 19 is located between the two first bending wheels 7 and the second bending wheel 9. Sensors are installed on the starting proximity switch mounting bracket 19 and the ending proximity switch mounting bracket 20 respectively. The sensors can be connected to the controller. When the pipe is moved to the starting proximity switch position, the sensor detects a signal, and the controller starts to control the drive mechanism 2 to drive the push rack 21 in the transmission mechanism 4 to move. The controller controls the main shaft 6 to drive the rocker arm 10 to rotate in the direction of pipe bending. The pipe bending operation is achieved through the cooperation of the first bending wheel 7 and the second bending wheel 9. During the bending process, the end of the pipe will bend towards the position of the ending proximity switch. When the pipe bends to the position of the ending proximity switch, the sensor detects a signal again, and the controller controls the drive mechanism 2 to control the push rack 21 in the transmission mechanism 4 to move in the opposite direction. Finally, the rocker arm 10 is driven to rotate in the opposite direction to the initial position, which is convenient for the next bending operation.
[0034] In this embodiment, the pipe bending machine can bend pipes of different diameters and lengths by changing the first bending wheel 7 and the second bending wheel 9 of different specifications. During the bending process, the operator can also input the required bending angle and shape parameters through the controller. The pipe bending machine precisely controls the bending process according to these parameters to ensure that the pipe can be bent into the required geometric shape. In this embodiment, by controlling the movement distance of the thrust rack 21 through the drive mechanism 2, the rotation angle of the rotating shaft 8 can be controlled, thereby controlling the rotation angle of the rocker arm 10 and the second bending wheel 9, thus realizing the control of the pipe bending angle.
[0035] Furthermore, as a preferred embodiment, the transmission mechanism 4 includes a sliding component, a thrust rack 21, and a gear 22. The gear 22 is mounted on the main shaft 6, the sliding component is mounted on the frame 11, the thrust rack 21 is connected to the sliding component, and the thrust rack 21 meshes with the gear 22. The drive mechanism 2 is connected to the thrust rack 21. The gear 22 is fixed on the main shaft 6. The sliding component includes a slide rail 23 and a slider 24 slidably mounted on the slide rail 23. The thrust rack 21 is connected to the slider 24, and the slide rail 23 is connected to the bracket. The slide rail 23 is bolted to the inside of the frame 11. (See details below.) Figure 3As shown, the slider 24 is located inside the slide rail 23, and its upper end extends out of the slide rail 23 and is bolted to the thrust rack 21. The output end of the hydraulic cylinder can be connected to the thrust rack 21 via a connecting seat or directly welded to it. When the hydraulic cylinder starts, it drives the thrust rack 21 to move linearly on the slide rail 23. The linear motion of the thrust rack 21 is converted into the rotation of the gear 22 through meshing with the gear 22, which in turn drives the main shaft 6 to rotate, thus realizing the transmission of power. This transmission method has a simple structure and high transmission efficiency, and can stably transmit the power of the drive mechanism 2 to the main shaft 6, ensuring the smooth operation of the pipe bending operation. The controller can control the start or stop of the hydraulic cylinder.
[0036] Furthermore, as a preferred embodiment, the clamping mechanism 3 includes a motor 25, a bidirectional screw 26, and clamping blocks 27. Two clamping blocks 27 are located on both sides of the upper end of the material rack 5. The bidirectional screw 26 passes through the two clamping blocks 27 and is threadedly engaged with them. The output end of the motor 25 is connected to the bidirectional screw 26. In this embodiment, the start or stop of the motor 25 can be controlled by a controller. When the pipe is placed on the material rack 5, one end of the pipe extends into the bending mechanism 1. At this time, the sensor on the starting point proximity switch mounting bracket 19 detects the pipe, and then the controller controls the motor 25 to drive the bidirectional screw 26 to rotate, causing the two clamping blocks 27 to clamp the pipe. Simultaneously, the controller controls the hydraulic cylinder to operate.
[0037] A guide rail can be installed at the upper end of the material rack 5. Two clamping blocks 27 are slidably mounted on the guide rail. The bidirectional screw 26 has external threads with opposite directions at both ends, and the clamping blocks 27 are threadedly engaged with the corresponding threaded sections. When it is necessary to clamp the pipe, the motor 25 is started, and the motor 25 drives the bidirectional screw 26 to rotate. Due to the threaded engagement between the bidirectional screw 26 and the clamping blocks 27, the two clamping blocks 27 move towards each other along the bidirectional screw 26, thereby tightly clamping the pipe placed on the material rack 5. After the pipe is bent, the motor 25 reverses, and the bidirectional screw 26 drives the two clamping blocks 27 to move in opposite directions, releasing the oxygen blowing pipe. This clamping method can automatically adjust the clamping force according to the different diameter oxygen blowing pipes, ensuring that the pipe will not move during the bending process and guaranteeing the accuracy of the bending. The pipe does not need to move axially during the bending process. At this time, the pipe is clamped by the clamping mechanism 3 to prevent the pipe from shifting under bending stress, thereby ensuring the accuracy of the bending. In this embodiment, the motor 25 is located at the upper end of the material rack 5. However, the motor 25 can be mounted on an external structural component so that the motor 25 is positioned at the upper end of the material rack 5, but is not directly connected and fixed to the material rack 5. In other embodiments, the motor 25 can be directly fixed to the upper surface of the material rack 5 by bolts.
[0038] In this embodiment, the guide rails can be bolted to the upper end of the material rack 5. The first bending wheel 7 and the second bending wheel 9 can be bending rollers.
[0039] In this embodiment, two positioning blocks 28 are also provided at the upper end of the material rack 5. A positioning groove is provided in the middle of each positioning block 28 for placing the pipe. The starting point proximity switch mounting bracket 19 and the ending point proximity switch mounting bracket 20 are mainly located in... Figure 5 This is reflected in Figure 1-4 It is not shown in the figure, and the starting proximity switch mounting bracket 19 and the ending proximity switch mounting bracket 20 have the same structure.
[0040] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A special tube bending machine for oxygen blowing tubes, characterized in that, It includes a bending mechanism, a driving mechanism, a clamping mechanism, a transmission mechanism, and a material rack. One end of the material rack is provided with the driving mechanism and the bending mechanism, and the clamping mechanism is installed at the upper end of the material rack. The bending mechanism includes a main shaft, a first bending wheel, a rotating shaft, a second bending wheel, and a rocker arm. The first bending wheel is mounted on the main shaft, the second bending wheel is mounted on the rotating shaft, the rocker arm connects the main shaft and the rotating shaft, and the drive mechanism is connected to the main shaft via the transmission mechanism.
2. The oxygen blowing tube bending machine as described in claim 1, characterized in that, It also includes a frame, a bending platform and an angular contact ball bearing. The bending platform is mounted on the upper end of the frame, the spindle passes through the bending platform, and the spindle is connected to the bending platform through the angular contact ball bearing.
3. The oxygen blowing tube bending machine as described in claim 1, characterized in that, It also includes a first deep groove ball bearing and a first guide sleeve. The first bending wheel is connected to the main shaft through the first deep groove ball bearing. First end caps are provided on both sides of the first deep groove ball bearing. The first guide sleeve is sleeved on the main shaft. The first guide sleeve abuts against the first deep groove ball bearing and the rocker arm.
4. The oxygen blowing tube bending machine as described in claim 2, characterized in that, It also includes a second deep groove ball bearing, a second guide sleeve, and a bearing housing. The bearing housing is provided between the main shaft and the bending platform. The angular contact ball bearing and the second deep groove ball bearing are both installed in the bearing housing. The second guide sleeve and the second deep groove ball bearing are sleeved on the main shaft. The second guide sleeve is located between the angular contact ball bearing and the second deep groove ball bearing.
5. The oxygen blowing tube bending machine as described in claim 2, characterized in that, It also includes a starting proximity switch mounting bracket and an ending proximity switch mounting bracket, both of which are disposed on the bending platform and distributed on both sides of the first bending wheel. The starting proximity switch mounting bracket is located between the two first bending wheels and the second bending wheel.
6. The oxygen blowing tube bending machine as described in claim 2, characterized in that, The transmission mechanism includes a sliding component, a thrust rack, and a gear. The gear is mounted on the main shaft, the sliding component is mounted on the frame, the thrust rack is connected to the sliding component, the thrust rack meshes with the gear, and the drive mechanism is connected to the thrust rack.
7. The oxygen blowing tube bending machine as described in claim 6, characterized in that, The sliding component includes a slide rail and a slider slidably disposed on the slide rail, the thrust rack is connected to the slider, and the slide rail is connected to the frame.
8. The oxygen blowing tube bending machine as described in claim 7, characterized in that, The clamping mechanism includes a motor, a bidirectional screw, and clamping blocks. The two clamping blocks are located on both sides of the upper end of the material rack. The bidirectional screw passes through the two clamping blocks and is threadedly engaged with the clamping blocks. The output end of the motor is connected to the bidirectional screw.