A vertical rotating multi-stage pipe forming device
By using a multi-stage vertical rotation forming device for pipes, and utilizing a servo motor-driven gear transmission and a self-centering fixture, precise positioning of the pipes and rapid mold replacement are achieved. This solves the problems of low efficiency and poor versatility of existing forming equipment, and improves processing accuracy and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- FOSHAN MINGYI MACHINERY CO LTD
- Filing Date
- 2026-03-24
- Publication Date
- 2026-05-26
AI Technical Summary
Existing pipe forming equipment has a cumbersome mold operation process and redundant processing steps, making it difficult to achieve efficient and accurate forming. It is also difficult to adapt to the processing needs of various tapers and shapes of pipes, resulting in poor versatility.
The equipment employs a multi-stage vertical rotation forming device for pipes. A servo motor drives a gear and a gear ring to rotate the indexing plate precisely. Combined with a self-centering fixture and modular mold design, it ensures that the initial position of the pipe is accurately vertical. A stable reaction force is provided through a hydraulic system, and uniform lubrication is achieved with a copper mold cap and a multi-hole distributor.
It improves the pipe forming accuracy and the applicability of the equipment, reduces wear, extends the service life of the equipment, and improves processing efficiency and the surface quality of the finished product.
Smart Images
Figure CN122076840A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipe technology, specifically to a vertically rotating multi-stage pipe forming device. Background Technology
[0002] Pipes are metal products with a hollow cross-section and a length much greater than their diameter or circumference. They are usually made of metal materials such as steel and are widely used in many fields such as fluid transportation, structural support, and machinery manufacturing. Their forming quality, dimensional accuracy, and surface smoothness directly affect their subsequent performance and are an indispensable basic component in industrial production.
[0003] A common method for processing pipes in the existing technology is to use a horizontal drawing machine. By fixing the pipe, different sized dies are used to extrude and shape the pipe in sequence. This method requires the use of a mandrel for auxiliary processing. The disadvantages of this method are that the die operation process is repetitive and cumbersome, the processing steps are redundant, resulting in low production efficiency. The use of a mandrel not only increases the complexity of equipment debugging and operation, but also damages the inner wall of the pipe during processing. At the same time, it is difficult to accurately control the forming accuracy of the pipe, which is prone to dimensional deviations. It cannot flexibly adapt to the processing needs of various tapered and shaped pipes, and has poor versatility.
[0004] To address the above problems, a multi-stage vertical rotation forming device for pipes is proposed. Summary of the Invention
[0005] The purpose of this invention is to provide a multi-stage vertical rotation forming device for pipes, so as to solve the problem that efficient and accurate forming of steel cannot be achieved in the prior art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage vertical rotation forming device for pipes, comprising a base and a ground, wherein fixed rods are fixedly connected to both sides of the top of the base, an upper platform is fixedly connected to the top of the fixed rods, a servo motor is fixedly connected to one side of the top of the upper platform, a gear is fixedly connected to the output end of the servo motor, bushings are slidably connected to the outer ring of the fixed rods, and a scale is fixedly connected to the outer wall of the base.
[0007] By adopting the above technical solution, the four fixed rods have high-strength alloy steel guide columns with lubrication on their surfaces, which run through the upper, middle and lower three-layer structure. The middle layer structure is a combination of the upper plate and the lower plate, which ensures that the middle mold platform moves strictly in the vertical direction without deflection, thus ensuring molding accuracy. The scale is located on the side of the frame, which makes it easy for the operator to quickly observe and calibrate the initial and real-time position of the mold.
[0008] As a further description of the above technical solution: a bearing is installed in the middle of the bottom of the upper platform, a gear ring is fixedly connected to the outer ring of the bearing, and an indexing plate is fixedly connected to the bottom of the gear ring.
[0009] By adopting the above technical solution, 32 specially designed clamps are fixed on the indexing plate. The pipe can be fixed by inserting it into the specially designed clamps and rotating it.
[0010] As a further description of the above technical solution: each indexing plate is provided with a special clamp at its bottom, and a pipe is provided at the bottom of the special clamp.
[0011] By employing the above technical solution, a specially designed clamp is used to firmly hold the thicker end of the pipe. The clamp has a self-centering function to ensure that the initial position of the pipe is precisely vertical.
[0012] As a further description of the above technical solution: the outer ring of the top bushing is rotatably connected to an upper plate, the outer ring of the bottom bushing is rotatably connected to a lower plate, and a guide cover is fixedly connected to the bottom of the lower plate.
[0013] By adopting the above technical solution, the guide cover can guide the oil stored in the lower plate, causing the oil to fall downwards and be collected.
[0014] As a further description of the above technical solution: both sides of the top center of the upper plate are fixedly connected to a multi-hole distributor, and both sides of the top of the upper plate are equipped with a mold cover.
[0015] By adopting the above technical solution, 32 steel sleeves are distributed around the upper plate, and each steel sleeve contains a quick-change precision forming mold. There are two flow dividers in the middle of the upper platform. The platform is connected to four connecting rods via a large flange. Each steel sleeve contains 12 to 16 molds in sequence. The molds can be replaced with different specifications according to different needs. The modular design facilitates replacement, maintenance and inspection. Each mold is grouped and numbered for easy replacement and to ensure that no installation errors are made. There is a copper mold cap at the mold opening to prevent scratching the pipe. There is an oil filling port on the side of the cap to facilitate the injection of metal drawing oil into the mold without obstructing the guide port. The upper plate has two flow dividers. Oil is pumped into the top from the external circulating oil tank and distributed to each mold cap through the flow dividers.
[0016] As a further description of the above technical solution: connecting rods are installed on both sides of the middle between the lower plate and the upper plate, and mold steel sleeves are slidably connected on both sides between the lower plate and the upper plate.
[0017] By adopting the above technical solution, the bottom hydraulic drive system includes a heavy-duty main hydraulic cylinder that pushes the upper plate. The two plates of the middle platform are connected by four connecting rods, which are the space for installing the mold steel sleeve. This design effectively saves the overall height of the machine and provides a stable and adjustable powerful thrust for the entire molding process. The hydraulic pump station, oil tank, valve group, etc. are all integrated on the outside of the machine for easy transportation and maintenance. The hydraulic system is equipped with pressure sensors and displacement sensors to achieve precise closed-loop control of speed and pressure.
[0018] As a further description of the above technical solution: support rods are fixedly connected to both sides of the top center of the base, and a collection guide plate is fixedly connected to the top of the support rods.
[0019] By adopting the above technical solution, the collecting guide plate collects and guides the oil dripping from the guide cover into the storage device, making it convenient for the oil to be reused.
[0020] As a further description of the above technical solution: a first flange is fixedly connected to the top center of the collecting guide plate, and a heavy-duty hydraulic cylinder is fixedly connected to the top of the first flange.
[0021] By adopting the above technical solution, the bottom of the heavy-duty hydraulic cylinder is installed on the top of the collecting guide plate through the first flange.
[0022] As a further description of the above technical solution: the output end of the heavy-duty hydraulic cylinder is fixedly connected to a second flange, and the second flange is installed at the bottom of the upper plate.
[0023] By adopting the above technical solution, the second flange is installed with bolts to the upper plate, and the heavy-duty hydraulic cylinder drives the upper plate to move upward.
[0024] As a further description of the above technical solution: a pit is provided at the top of the ground, and the base is installed at the bottom of the pit.
[0025] By adopting the above technical solution, the entire frame is placed in a pre-made pit, with a height of about 2 meters above the ground, and the staff are basically operating from the upper level.
[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a multi-stage vertical rotation forming device for pipes. A servo motor drives a gear and gear ring to precisely rotate the indexing plate, achieving accurate alignment between the pipe and the mold inlet, further improving forming precision and meeting high-precision processing requirements. A specially designed clamp with self-centering function firmly holds the thick end of the pipe, ensuring a precisely vertical initial position, and the clamping area remains fixed throughout, providing stable reaction force for the stretching process. The modularly designed mold assembly, with its group numbering, allows for quick replacement of different mold specifications according to processing needs, facilitating maintenance and inspection, avoiding installation errors, and significantly improving equipment maintenance efficiency and processing flexibility. One machine can adapt to forming various shapes and tapers of pipes, greatly expanding its applicability. The soft copper mold cap prevents direct contact and friction between the pipe and the hard mold sleeve, preventing scratches on the pipe surface and improving the surface quality of the finished product. A multi-hole distributor evenly distributes metal stretching oil to each mold, ensuring sufficient and balanced lubrication, reducing wear, extending equipment life, and allowing for convenient oil injection through the side oiling port on the cap without obstructing guidance. Attached Figure Description
[0027] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the gears of the present invention; Figure 3 This is a schematic diagram of the bearing of the present invention; Figure 4 This is a schematic diagram of the mold cylinder liner of the present invention; Figure 5 This is a schematic diagram of the heavy-duty hydraulic cylinder of the present invention; Figure 6 This is a ground-view sectional perspective view of the present invention.
[0028] Legend: 1. Base; 2. Fixing rod; 3. Upper platform; 4. Servo motor; 5. Gear; 6. Gear ring; 7. Bearing; 8. Indexing plate; 9. Special fixture; 10. Pipe; 11. Upper plate; 12. Multi-hole distributor; 13. Mold cover; 14. Mold steel sleeve; 15. Connecting rod; 16. Lower plate; 17. First flange; 18. Heavy-duty hydraulic cylinder; 19. Second flange; 20. Bushing; 21. Scale; 22. Ground; 23. Pit; 24. Support rod; 25. Guide cover; 26. Collection guide plate. Detailed Implementation
[0029] The technical solutions of the embodiments of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the invention.
[0030] To further understand the content of this invention, a detailed description of the invention will be provided with reference to the accompanying drawings.
[0031] Reference Figure 1 and Figure 6 A multi-stage vertical rotation forming device for pipes includes a base 1 and a ground 22. The sensor and other structures of this device are existing technologies, feeding information back to an external controller for easier device control; this is not an innovation of this patent. Support rods 24 are fixedly connected to both sides of the top center of the base 1. A collection guide plate 26 is fixedly connected to the top of each support rod 24, supporting the collection guide plate 26. The collection guide plate 26 has a guide opening at one location, and the rest is a frame, ensuring that oil can be guided into the storage mechanism. A first flange 17 is fixedly connected to the top center of the collection guide plate 26, and the first flange 17 is bolted to the collection... The guide plate 26 is connected, and a heavy-duty hydraulic cylinder 18 is fixedly connected to the top of the first flange 17. The heavy-duty hydraulic cylinder 18 can be fixed to the collecting guide plate 26 through the first flange 17. The output end of the heavy-duty hydraulic cylinder 18 is fixedly connected to the second flange 19, and the second flange 19 is installed at the bottom of the upper plate 11. The driving of the heavy-duty hydraulic cylinder 18 causes the second flange 19 to move. The movement of the second flange 19 pushes the upper plate 11 upward to move. A pit 23 is opened at the top of the ground 22, and the base 1 is installed at the bottom of the pit 23. The equipment is installed inside the pit 23 to facilitate the work of the staff and prevent the staff from falling in the air.
[0032] Reference Figure 2 - Figure 5The base 1 has fixed rods 2 on both sides of its top, and an upper platform 3 is fixedly connected to the top of the fixed rods 2. The fixed rods 2 fix the position of the upper platform 3. A servo motor 4 is fixedly connected to one side of the top of the upper platform 3. The servo motor 4 is a precision planetary reducer. A gear 5 is fixedly connected to the output end of the servo motor 4. The drive of the servo motor 4 can make the gear 5 rotate. The outer ring of the fixed rods 2 is slidably connected to the bushings 20. The outer wall of the base 1 is fixedly connected to the scale 21. The scale 21 facilitates the observation of the middle layer movement by the staff. A bearing 7 is installed in the middle of the bottom of the upper platform 3. The bearing 7 is a slewing bearing and is connected to the upper platform 3 by bolts. The outer ring of the bearing 7 is fixed. A gear ring 6 is connected, rotating on the outer ring of the bearing 7. An indexing plate 8 is fixedly connected to the bottom of the gear ring 6. The rotation of the gear ring 6 drives the indexing plate 8 to rotate synchronously. Gear 5 meshes with the gear ring 6, providing a certain transmission ratio. For every one revolution of gear 5, the gear ring 6 rotates only a certain angle. Special clamps 9 are installed at the bottom of the indexing plate 8, with a tube 10 attached to the bottom of each clamp. The clamps 9 remain absolutely fixed throughout the forming process, providing a stable reaction force for the stretching of the tube 10, balancing the external forces during forming, and ensuring the forming effect. The outer ring of the top bushing 20 is rotatably connected to an upper plate 11, and the outer ring of the bottom bushing 20 is rotatably connected to a lower plate 16. A fixing rod 2... The movement of the upper plate 11 and the lower plate 16 is guided by the bushing 20. A guide cover 25 is fixedly connected to the bottom of the lower plate 16. The guide cover 25 can guide the oil dripping from the bottom of the lower plate 16, ensuring that the oil drips above the collecting guide plate 26. A porous distributor 12 is fixedly connected to both sides of the top center of the upper plate 11. The porous distributor 12 receives the stretching oil pumped into the top from the external circulating oil tank and evenly distributes the oil to the 32 mold caps 13 on the platform through its porous structure, ensuring that each set of precision forming molds receives sufficient and balanced lubrication. Mold caps 13 are installed on both sides of the top of the upper plate 11. The mold caps 13 serve as buffer protection parts at the mold inlet and are made of copper. The material is relatively soft, which can prevent the pipe 10 from directly contacting and rubbing against the hard mold steel sleeve 14, thus preventing the surface of the pipe 10 from being scratched from the source. This solves the problem that the surface of the pipe 10 is easily damaged during the forming process of traditional equipment. Connecting rods 15 are installed on both sides of the middle between the lower plate 16 and the upper plate 11. The movement of the upper plate 11 causes the lower plate 16 to move accordingly through the connecting rods 15. Mold steel sleeves 14 are slidably connected on both sides between the lower plate 16 and the upper plate 11, serving as the mounting base for the mold. Each steel sleeve is equipped with 12 to 16 customized precision forming molds in sequence. The rigid structure provides a stable installation environment for the mold, preventing the mold from shifting during the forming process and ensuring the forming accuracy.
[0033] Working principle: First, the base 1 is installed at the bottom of the pit 23, so that the equipment protrudes about 2 meters above the ground 22, which facilitates operation by workers on the upper level and reduces the risk of falls. Then, the thick end of the pipe 10 is placed into the special clamp 9 at the bottom of the indexing plate 8. The special clamp 9 firmly clamps the pipe 10 with its self-centering function, ensuring that its initial position is accurately vertical. At the same time, this area remains absolutely fixed during the forming process, providing a stable reaction force for the stretching process and balancing the external forces of forming to ensure the forming effect. Then, the servo motor 4 on the top of the upper platform 3 is started. The servo motor 4 drives the gear 5 to rotate. The gear 5 meshes with the gear ring 6 on the outer ring of the bearing 7, driving the indexing plate 8 to rotate. The precise rotation of dial 8 ensures that pipe 10 is accurately aligned with the mold inlet below, solving the positioning deviation problem of traditional equipment. Then, an external circulating oil tank pumps metal drawing oil into the perforated distributor 12 at the top of the upper plate 11. The oil is evenly distributed to the 32 mold caps 13. The copper mold caps 13 prevent scratching of pipe 10, and their side oil filling ports facilitate oil injection into the 12-16 custom precision forming molds inside the mold steel sleeves 14 without obstructing the guide ports. The modular mold design, combined with group numbering, facilitates replacement, maintenance, and inspection, preventing installation errors. Sufficient lubrication reduces mold wear and extends equipment lifespan. Subsequently, the heavy-duty hydraulic cylinder 18, fixed to the top of the guide plate 26 via the first flange 17, is activated. The heavy-duty hydraulic cylinder 18 pushes the upper plate 11 via the second flange 19. The upper plate 11 and the lower plate 16 are connected by a connecting rod 15. Under the guidance of the fixed rod 2 and the bushing 20, the cylinder moves smoothly in the vertical direction. The guide system, consisting of four high-strength alloy steel fixed rods 2 with lubricated surfaces, ensures that the middle mold platform does not deflect and effectively bears the lateral force generated during the molding process to protect the heavy-duty hydraulic cylinder 18. The scale 21 on the side of the frame allows the operator to quickly observe and calibrate the initial and real-time position of the mold. The hollow design of the stroke frame facilitates the wiring of the upper and lower layers. The threaded connection effectively protects the safety of communication and power lines. The hydraulic system is equipped with pressure and displacement sensors to achieve precise closed-loop control of speed and pressure. The notch design of the mold effectively prevents the pipe 10 from slipping on the mold. It can be finely adjusted in various directions according to the actual molding effect to adapt to the molding needs of various shapes. After molding, the pipe 10 falls directly into the finished product frame, reducing manual material unloading time. During mold reset, the operator can prepare the next material, which greatly improves processing efficiency. At the same time, the guide cover 25 at the bottom of the lower plate 16 guides the dripping oil to the collection guide plate 26 to realize oil recycling and reuse, saving production costs. The whole process does not require the cooperation of a mandrel.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-stage vertical rotation forming device for pipes, comprising a base (1) and a ground (22), characterized in that: The base (1) has fixed rods (2) on both sides of the top. The fixed rods (2) have an upper platform (3) on the top. The upper platform (3) has a servo motor (4) on one side of the top. The output end of the servo motor (4) has a gear (5) on it. The outer ring of the fixed rods (2) has a bushing (20) on it. The outer wall of the base (1) has a scale (21) on it.
2. The multi-stage vertical rotation forming equipment for pipes according to claim 1, characterized in that: A bearing (7) is installed in the middle of the bottom of the upper platform (3), and a gear ring (6) is fixedly connected to the outer ring of the bearing (7). An indexing plate (8) is fixedly connected to the bottom of the gear ring (6).
3. The multi-stage vertical rotation forming equipment for pipes according to claim 2, characterized in that: Each indexing plate (8) is provided with a special clamp (9) at its bottom, and a pipe (10) is provided at the bottom of the special clamp (9).
4. The multi-stage vertical rotation forming equipment for pipes according to claim 1, characterized in that: The upper plate (11) is rotatably connected to the outer ring of the top bushing (20), and the lower plate (16) is rotatably connected to the outer ring of the bottom bushing (20). A guide cover (25) is fixedly connected to the bottom of the lower plate (16).
5. The multi-stage vertical rotation forming equipment for pipes according to claim 4, characterized in that: The upper plate (11) has a multi-hole distributor (12) fixedly connected to both sides of the top middle, and a mold cover (13) is installed on both sides of the top of the upper plate (11).
6. The multi-stage vertical rotation forming equipment for pipes according to claim 4, characterized in that: Connecting rods (15) are installed on both sides of the middle between the lower plate (16) and the upper plate (11), and mold steel sleeves (14) are slidably connected on both sides between the lower plate (16) and the upper plate (11).
7. The multi-stage vertical rotation forming equipment for pipes according to claim 1, characterized in that: The base (1) has support rods (24) fixedly connected to both sides of the top middle, and a collection guide plate (26) is fixedly connected to the top of the support rods (24).
8. The multi-stage vertical rotation forming equipment for pipes according to claim 7, characterized in that: The top center of the collecting guide plate (26) is fixedly connected to a first flange (17), and the top of the first flange (17) is fixedly connected to a heavy-duty oil cylinder (18).
9. A multi-stage vertical rotation forming device for pipes according to claim 8, characterized in that: The output end of the heavy-duty hydraulic cylinder (18) is fixedly connected to a second flange (19), and the second flange (19) is installed at the bottom of the upper plate (11).
10. A multi-stage vertical rotation forming device for pipes according to claim 1, characterized in that: A pit (23) is provided on the top of the ground (22), and a base (1) is installed at the bottom of the pit (23).