A molding apparatus and method for a slender, strip-shaped, irregularly shaped tubular component.

Abstract

This invention relates to the field of shaped tube forming technology, specifically to a forming device and method for a slender, strip-shaped shaped tubular component. The device mainly includes a forming support, comprising a water tank with an open top, filled with water. Two U-shaped arm plates are fixedly installed on the top surface of the water tank at its two ends. A mold-closing hydraulic assemblies are fixedly installed between the two U-shaped arm plates. Below the mold-closing hydraulic assemblies are two upper mold plate assemblies, and below the upper mold plate assemblies are two lower mold plate assemblies. By setting up dual-station lower and upper mold plate assemblies, and in conjunction with the lateral offset structure of the mold-closing hydraulic assemblies, the two stations can alternately perform blank tube forming and loading / unloading operations. When one station is performing forming processes such as mold closing, liquid filling, and pressure holding, the other station can simultaneously complete the removal of the formed part and the loading of a new blank tube, significantly shortening equipment downtime and solving the problem of low production efficiency caused by single-station serial operations.

Description

Technical Field

[0001] This invention relates to the field of shaped tube forming technology, specifically to a forming device and method for a slender strip-shaped shaped tubular component. Background Technology

[0002] The existing forming device for slender, strip-shaped tubular components mainly consists of a forming mold, a mold closing press, a hydraulic system, and an end sealing mechanism. During operation, the blank tube is first placed in the mold cavity, then the mold closing press drives the mold to close, and then the plugs of the end sealing mechanism are inserted into both ends of the blank tube. Then, the hydraulic system injects high-pressure liquid into the blank tube through the injection channel of the plug, causing the blank tube to undergo plastic deformation under pressure, and finally fit into the mold cavity to complete the forming. The seal between the plug and the inner wall of the blank tube mainly relies on the rubber sealing ring, which achieves the seal through mechanical extrusion.

[0003] However, existing molding devices for slender, strip-shaped tubular components have only one station. At this station, processes such as mold closing, liquid filling, pressure holding, pressure release, and mold opening need to be completed, resulting in long waiting times and low production efficiency. Moreover, the plug sealing structure is simple, and the single sealing ring is prone to deformation and displacement under the impact of high-pressure liquid, leading to seal failure, liquid leakage, and affecting the forming accuracy of the billet tube. At the same time, the installation and removal of the plugs largely rely on manual labor. A separate plug insertion and removal process is required during mold closing and opening, which prolongs the equipment's standby time, and the connection between loading / unloading and sealing operations is not smooth, significantly reducing production efficiency and making it difficult to meet the needs of large-scale continuous production.

[0004] Therefore, there is an urgent need to design a molding device for slender, strip-shaped tubular components to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a molding apparatus and method for a slender, strip-shaped, irregularly shaped tubular component, in order to solve the problems mentioned in the background art, such as low production efficiency due to the single-station design, easy sealing failure due to the simple plug sealing structure, and poor operation due to the reliance on manual installation and removal of the plug.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A molding device for a slender, strip-shaped tubular component includes: a molding support, the molding support including a water tank with an open top, the water tank being filled with water, two U-shaped arm plates fixedly installed on the top surface of the water tank at its two ends, a mold-closing hydraulic device fixedly installed between the two U-shaped arm plates, two upper mold plate assemblies below the mold-closing hydraulic device, two lower mold plate assemblies below the upper mold plate assemblies, a support plate and a fixing platform fixedly installed below the lower mold plate assemblies, the support plate and the fixing platform being fixedly connected to the bottom surface of the inner cavity of the water tank, the two lower mold plate assemblies being aligned with the two upper mold plate assemblies one by one, a buffer mechanism fixedly installed on the top of the upper mold plate assemblies, a mold-opening mechanism and a plug assembly fixedly installed between the aligned lower mold plate assemblies and the upper mold plate assemblies, a pressure-holding mechanism fixedly installed between the buffer mechanism and the mold-opening mechanism, and a control box fixedly installed on one of the U-shaped arm plates.

[0008] Preferably, the lower template assembly includes a lower mounting shell, and the upper template assembly includes an upper mounting shell. The two ends of the lower and upper mounting shells that are close to each other are open, and the ends of the lower and upper mounting shells facing the outside of the water tank are open. Template bodies are slidably inserted into the lower and upper mounting shells. A T-slot is opened on the end face of the template body, and a T-rail is slidably inserted into the T-slot. The T-rail is fixedly connected to the inner wall of the lower and upper mounting shells. A blank tube groove is opened on the two sides of the two template bodies that are close to each other. A feature groove is opened on the inner wall of the blank tube groove. A blank tube is filled inside the blank tube groove and is immersed in water.

[0009] Preferably, electromagnetic telescopic rods are fixedly installed on both sides of the lower and upper mounting shells away from the template body. The electromagnetic telescopic rods are electrically connected to the control box. Fixed through holes are opened on the lower and upper mounting shells. The extension rod of the electromagnetic telescopic rod is movably inserted into the fixed through hole, and the end face of the extension rod is flush with the inner wall of the billet tube groove.

[0010] Preferably, a fixing cylinder is fixedly installed on both sides of the lower mounting shell and the upper mounting shell away from the template body. A locking bolt is threadedly installed on the end face of the fixing cylinder. The locking bolt passes through the fixing cylinder. An operating cap is fixedly connected to one end of the locking bolt, and a locking truncated cone is fixedly connected to the other end of the locking bolt. The locking truncated cone can enter the fixing cylinder. A truncated cone-shaped groove is opened on both the lower mounting shell and the upper mounting shell. The small diameter end of the truncated cone-shaped groove extends into the interior of the template body. The locking truncated cone is adapted to the truncated cone-shaped groove.

[0011] Preferably, the mold closing hydraulic device includes a mold closing plate located between two U-shaped arm plates. A mold closing slide rod is slidably inserted into the mold closing plate, and both ends of the mold closing slide rod are fixedly connected to the two U-shaped arm plates respectively. A drive screw is threadedly installed on the mold closing plate, and both ends of the drive screw are fixedly connected to the two U-shaped arm plates respectively. A servo motor is fixedly installed at one end of the drive screw, and the servo motor is bolted to one of the U-shaped arm plates. The servo motor is electrically connected to the control box. A hydraulic cylinder located in the middle of the mold closing plate is bolted on the mold closing plate. The hydraulic cylinder is connected to an external hydraulic system and controlled by the control box. A telescopic column inside the hydraulic cylinder penetrates the mold closing plate, and a pressure sensor is fixedly installed on the end face of the telescopic column. The pressure sensor is transmitted and connected to the control box.

[0012] Preferably, the buffer mechanism includes a buffer plate located between two U-shaped arm plates and below the closing template. The buffer plate is adapted to the hydraulic cylinder. A buffer column is fixedly connected to the surface of the buffer plate away from the closing template at its end. A buffer spring is movably sleeved on the outside of the buffer column. One end of the buffer spring is fixedly connected to the surface of the buffer plate, and the other end of the buffer spring is fixedly connected to a buffer plate. The buffer plate is slidably sleeved on the outside of the buffer column and is connected to the upper mounting shell for transmission.

[0013] Preferably, the mold opening mechanism includes a mold opening base plate, which is connected to the end of the lower mounting shell. A mold opening spring is fixedly connected to the top surface of the mold opening base plate. The top end of the mold opening spring is fixedly connected to the surface of the buffer plate. A buffer column is movably inserted into the mold opening base plate, and a stop cap is fixedly connected to the end of the buffer column.

[0014] Preferably, the plug assembly includes two extension plates, which are respectively fixedly connected to the two end faces of the lower mounting shell. A mold-opening base plate is connected to the ends of the extension plates. A guide groove is formed on the top surface of the extension plates, and a T-shaped groove is formed on the inner wall of the guide groove. A T-shaped slide rail is slidably inserted into the T-shaped groove, and a guide slider is fixedly connected to the T-shaped slide rail. A limit slider is fixedly connected to the top surface of the guide slider, and a fixed short shaft is fixedly connected to the side of the limit slider. A rotating wheel is movably sleeved on the outside of the fixed short shaft. A force-applying vertical plate is fixedly connected to the buffer plate. The vertical plate is fixedly connected to the end face of the upper mounting shell. The force-applying vertical plate has a force-applying inclined surface at the corner near the lower mounting shell. The rotating wheel rolls on the force-applying inclined surface. A traction spring is fixedly connected to the side of the limiting slider away from the lower mounting shell. A traction plate is fixedly connected to the other end of the traction spring. The traction plate is fixedly connected to the end of the mold opening base plate and the end of the extension plate. A plug body is fixedly connected to the other side of the limiting slider. A sealing ring groove is opened on the plug body. A sealing gasket is embedded in the sealing ring groove. A chamfered inclined surface is opened on the side of the sealing gasket near the lower mounting shell.

[0015] Preferably, the plug body has an internal installation channel with threads on its inner wall. A threaded tube is installed inside the installation channel, and the end of the threaded tube is fixedly connected to a limiting slider. The limiting slider has a fixed cavity inside, which communicates with the threaded tube. The radial depth of the sealing ring groove is deeper than the conventional depth, and the radial thickness of the sealing gasket is thicker than the conventional thickness. Multiple constant pressure through holes are evenly spaced on the inner wall of the installation channel, and these through holes communicate with the sealing ring groove. A guide cone is fixedly connected to the end of the plug body, and a channel hole communicating with the installation channel is opened on the end face of the guide cone. A booster pump is fixedly connected to the fixed cavity inside one limiting slider via a hose, and a pressure relief valve is fixedly connected to the hose. The booster pump is electrically connected to the control box and is fixedly installed on the surface of the water tank and communicates with the inner cavity of the water tank. An exhaust valve is fixedly connected to the fixed cavity inside another limiting slider, and the exhaust valve is fixedly installed on the top surface of the limiting slider.

[0016] Preferably, the pressure-holding mechanism includes a pressure-holding rod and a pressure-holding shell. One end of the pressure-holding rod is fixedly connected to the bottom surface of the buffer plate, and the other end of the pressure-holding rod passes through the buffer plate and the mold base plate. Multiple pressure-holding ring grooves are evenly spaced on the surface of the pressure-holding rod, and the cross-section of the pressure-holding ring groove is a right-angled triangle. The pressure-holding shell is fixedly connected to the bottom surface of the lower mounting shell. A guide sliding hole is provided inside the pressure-holding shell. A pressure-holding cover plate is bolted to one end of the pressure-holding shell. An electromagnet and a spreading spring are fixedly installed on the surface of the pressure-holding cover plate that contacts the pressure-holding shell. The electromagnet is electrically connected to the control box. A guide plate is fixedly connected to the other end of the spreading spring. The electromagnet, the spreading spring, and the guide plate are all movably inserted into the guide sliding hole. A strong magnetic plate is fixedly connected to the side of the guide plate near the electromagnet. The strong magnetic plate is compatible with the electromagnet. A fixed chamfer is provided on the end face of the other end of the guide plate. The fixed chamfer is compatible with the inclined surface inside the pressure-holding ring groove.

[0017] Preferably, a method for forming a slender strip-shaped tubular component includes the following steps;

[0018] Step 1: Place the first billet tube in the billet tube slot;

[0019] The second step is to use the forming bracket to control the action of the mold closing hydraulic device. Then, the mold closing hydraulic device moves the upper mold plate assembly to the lower mold plate assembly through the buffer mechanism. Then, the upper mold plate assembly and the lower mold plate assembly close the mold. At the same time, the upper mold plate assembly drives the plug assembly to move. After that, the plug assembly blocks the end of the blank tube. The pressure holding mechanism fixes the mold closing state between the upper mold plate assembly and the lower mold plate assembly.

[0020] The third step is to use the forming bracket to control the plug assembly, then the plug assembly fills the first blank tube with high-pressure water, and then use the forming bracket to control the offset of the mold closing hydraulic device so that the mold closing hydraulic device is aligned with another upper mold plate assembly. After that, the second blank tube is filled into the lower mold plate assembly corresponding to this upper mold plate assembly and subsequent operations are performed.

[0021] Step 4: The first blank tube undergoes plastic deformation under water pressure. After holding the pressure for a period of time, the forming process is completed. Then, the pressure is released by controlling the plug assembly through the forming bracket. Next, the pressure holding mechanism is released by controlling the forming bracket. After that, the upper mold assembly separates from the lower mold assembly under the elastic force of the mold opening mechanism. Finally, the formed blank tube is taken out.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] By setting up a lower and upper template assembly with two stations, and cooperating with the lateral offset structure of the mold closing hydraulic device, the two stations can alternately perform blank tube forming and loading / unloading operations. When one station is in the forming process such as mold closing, liquid filling, and pressure holding, the other station can simultaneously complete the removal of the formed part and the loading of a new blank tube, which significantly shortens the equipment standby time and solves the problem of low production efficiency caused by single-station serial operation.

[0024] By combining the plug body with sealing ring groove and deformable sealing gasket structure in the plug assembly, along with the constant pressure through hole and ring cavity design, the high pressure liquid simultaneously applies radial and axial pressure to the sealing gasket during the filling process. Under pressure, the sealing gasket undergoes bidirectional deformation, which not only expands the contact area with the inner wall of the blank tube, but also enhances the sealing performance with the plug body. This solves the problem of easy displacement and failure of a single sealing ring under high pressure impact, and significantly improves sealing reliability and forming accuracy.

[0025] By combining the elastic reset structure of the mold opening mechanism with the locking structure of the pressure holding mechanism, and the linkage design of the force-applying vertical plate and the rotating wheel, the plug is automatically inserted into the end of the blank tube during the mold closing process. When the mold opens, the plug is released by electromagnetic repulsion and automatically pulled out under the action of elastic force, eliminating the separate process of manually inserting and removing the plug. This achieves seamless connection between loading and unloading and sealing operations, solves the problem of prolonged equipment standby time caused by manual operation, significantly improves production continuity, and increases production efficiency. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 For the present invention Figure 1 3D structural diagram of the hydraulic actuator for the central mold;

[0028] Figure 3 For the present invention Figure 1A three-dimensional structural diagram showing the separation of the middle forming support and the lower template assembly;

[0029] Figure 4 For the present invention Figure 3 A three-dimensional structural diagram of the lower and upper template components;

[0030] Figure 5 For the present invention Figure 3 A schematic diagram of the split three-dimensional structure of the lower and upper template components;

[0031] Figure 6 For the present invention Figure 4 A three-dimensional structural diagram of the vertical plate under the applied force.

[0032] Figure 7 For the present invention Figure 1 A three-dimensional structural diagram of a booster pump;

[0033] Figure 8 For the present invention Figure 5 A three-dimensional structural diagram of the fixed cylinder in the middle;

[0034] Figure 9 For the present invention Figure 1 A schematic diagram of the disassembled three-dimensional structure of the middle plug body;

[0035] Figure 10 For the present invention Figure 4 A schematic diagram of the disassembled three-dimensional structure of the pressure-holding shell.

[0036] In the picture:

[0037] 1. Molding bracket; 101. Water tank; 102. U-shaped arm plate; 103. Support plate; 104. Fixing platform; 105. Control box;

[0038] 2. Lower template assembly; 200mm billet tube;

[0039] 3. Upper template assembly; 301. Lower mounting shell; 302. Upper mounting shell; 303. Template body; 304. T-slot; 305. T-rail; 306. Billet tube groove; 307. Feature groove; 308. Electromagnetic telescopic rod; 309. Fixing perforation; 310. Fixing cylinder; 311. Locking bolt; 312. Operating cap; 313. Locking truncated cone; 314. Frustum-shaped groove;

[0040] 4. Mold closing hydraulic actuator; 401. Mold closing plate; 402. Mold closing slide bar; 403. Drive screw; 404. Servo motor; 405. Hydraulic cylinder;

[0041] 5. Buffer mechanism; 501. Buffer plate; 502. Buffer column; 503. Buffer spring; 504. Buffer plate;

[0042] 6. Mold opening mechanism; 601. Mold opening base plate; 602. Mold opening spring;

[0043] 7. Plug assembly; 701. Extension plate; 702. Guide groove; 703. T-shaped groove; 704. T-shaped slide rail; 705. Guide slider; 706. Limit slider; 707. Fixed short shaft; 708. Rotating wheel; 709. Force-applying vertical plate; 710. Force-applying inclined surface; 711. Traction spring; 712. Traction plate; 713. Plug body; 714. Sealing ring groove; 715. Sealing gasket; 716. Chamfered inclined surface; 717. Mounting channel; 718. Threaded pipe; 719. Constant pressure through hole; 720. Guide cone; 721. Booster pump; 722. Exhaust valve;

[0044] 8. Pressure holding mechanism; 801. Pressure holding rod; 802. Pressure holding ring groove; 803. Pressure holding outer shell; 804. Guide slide hole; 805. Pressure holding cover plate; 806. Electromagnet; 807. Spreading spring; 808. Guide plate; 809. Strong magnetic plate; 810. Fixed chamfer. Detailed Implementation

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0047] like Figures 1-10As shown, this application provides a molding device for a slender, strip-shaped, irregularly shaped tubular component, comprising: a molding support 1, the molding support 1 including a water tank 101, the top of the water tank 101 being open, the water tank 101 being filled with water, two U-shaped arm plates 102 respectively located at both ends of the top surface of the water tank 101 being fixedly installed, a mold-closing hydraulic device 4 being fixedly installed between the two U-shaped arm plates 102, two upper mold plate assemblies 3 being provided below the mold-closing hydraulic device 4, and two lower mold plate assemblies 2 being provided below the upper mold plate assemblies 3, with a mold-closing hydraulic device 4 fixedly installed below the lower mold plate assemblies 2. A support plate 103 and a fixed platform 104 are fixedly installed on the bottom surface of the inner cavity of the water tank 101. Two lower template assemblies 2 are respectively aligned with two upper template assemblies 3. A buffer mechanism 5 is fixedly installed on the top of the upper template assembly 3. A mold opening mechanism 6 and a plug assembly 7 are fixedly installed between the aligned lower template assembly 2 and upper template assembly 3. A pressure holding mechanism 8 is fixedly installed between the buffer mechanism 5 and the mold opening mechanism 6. A control box 105 is fixedly installed on a U-shaped arm plate 102.

[0048] Please see Figure 5 The lower template assembly 2 includes a lower mounting shell 301, and the upper template assembly 3 includes an upper mounting shell 302. The two ends of the lower mounting shell 301 and the upper mounting shell 302 that are close to each other are open. The ends of the lower mounting shell 301 and the upper mounting shell 302 that face the outside of the water tank 101 are also open. Template bodies 303 are slidably inserted into the lower mounting shell 301 and the upper mounting shell 302. A T-shaped groove 304 is opened on the end face of the template body 303. A T-shaped rail 305 is slidably inserted into the T-shaped groove 304. The T-shaped rail 305 is fixedly connected to the inner wall of the lower mounting shell 301 and the upper mounting shell 302. A blank tube groove 306 is opened on the two sides of the two template bodies 303 that are close to each other. A feature groove 307 is opened on the inner wall of the blank tube groove 306. A blank tube 200 is filled inside the blank tube groove 306 and is immersed in water.

[0049] The T-slot 304 and T-rail 305 facilitate the replacement of the template body 303, allowing for faster replacement and increasing production efficiency.

[0050] By immersing the blank tube 200 in water, the water filling time can be reduced, which helps to increase production efficiency.

[0051] Please see Figure 5 Electromagnetic telescopic rods 308 are fixedly installed on both sides of the lower mounting shell 301 and the upper mounting shell 302 away from the template body 303. The electromagnetic telescopic rods 308 are electrically connected to the control box 105. Fixed through holes 309 are opened on the lower mounting shell 301 and the upper mounting shell 302. The extension rod in the electromagnetic telescopic rod 308 is movably inserted into the fixed through hole 309, and the end face of the extension rod is flush with the inner wall of the billet tube groove 306.

[0052] The electromagnetic telescopic rod 308 can push out the formed blank tube 200, which facilitates material unloading and helps to increase production efficiency.

[0053] Please see Figure 5 and Figure 8 The lower mounting shell 301 and the upper mounting shell 302 are both fixedly mounted on the two sides away from the template body 303. A locking bolt 311 is threadedly mounted on the end face of the fixing cylinder 310. The locking bolt 311 passes through the fixing cylinder 310. An operating cap 312 is fixedly connected to one end of the locking bolt 311, and a locking truncated cone 313 is fixedly connected to the other end of the locking bolt 311. The locking truncated cone 313 can enter the fixing cylinder 310. A truncated cone-shaped groove 314 is opened on both the lower mounting shell 301 and the upper mounting shell 302. The small diameter end of the truncated cone-shaped groove 314 extends into the interior of the template body 303. The locking truncated cone 313 is adapted to the truncated cone-shaped groove 314.

[0054] The locking action of the truncated cone 313 and the truncated cone groove 314 can fix the template body 303 in place, preventing it from falling off. At the same time, it can provide pressure to the template body 303, so that the inner wall of the T-slot 304 and the surface of the T-rail 305 fit together, which can play a pressing role and prevent the template body 303 from shaking.

[0055] Please see Figure 2 The mold closing hydraulic device 4 includes a mold closing plate 401, which is located between two U-shaped arm plates 102. A mold closing slide rod 402 is slidably inserted into the mold closing plate 401, and both ends of the mold closing slide rod 402 are fixedly connected to the two U-shaped arm plates 102 respectively. A drive screw 403 is threadedly installed on the mold closing plate 401, and both ends of the drive screw 403 are fixedly connected to the two U-shaped arm plates 102 respectively. A servo motor 404 is fixedly installed at one end of the drive screw 403. The servo motor 404 is bolted to one of the U-shaped arm plates 102 and is electrically connected to the control box 105. A hydraulic cylinder 405 located in the middle of the mold closing plate 401 is bolted on the mold closing plate 401. The hydraulic cylinder 405 is connected to an external hydraulic system and controlled by the control box 105. A telescopic column inside the hydraulic cylinder 405 passes through the mold closing plate 401, and a pressure sensor is fixedly installed on the end face of the telescopic column. The pressure sensor is transmitted and connected to the control box 105.

[0056] Used for switching workstations, allowing two workstations to work alternately, which helps increase production efficiency.

[0057] The pressure sensor is used to detect the mold closing pressure, and the mold closing pressure value is preset in the control box 105.

[0058] Please see Figure 4The buffer mechanism 5 includes a buffer plate 501, which is located between two U-shaped arm plates 102 and below the closing template 401. The buffer plate 501 is adapted to the hydraulic cylinder 405. A buffer column 502 is fixedly connected to the surface of the buffer plate 501 away from the closing template 401. A buffer spring 503 is movably sleeved on the outside of the buffer column 502. One end of the buffer spring 503 is fixedly connected to the surface of the buffer plate 501, and the other end of the buffer spring 503 is fixedly connected to a buffer plate 504. The buffer plate 504 is slidably sleeved on the outside of the buffer column 502 and is connected to the upper mounting shell 302.

[0059] Apply pressure to the upper template component 3 to stabilize the mold closing of the lower template component 2 and the upper template component 3.

[0060] Please see Figure 4 The mold opening mechanism 6 includes a mold opening base plate 601, which is connected to the end of the lower mounting shell 301. A mold opening spring 602 is fixedly connected to the top surface of the mold opening base plate 601. The top end of the mold opening spring 602 is fixedly connected to the surface of the buffer plate 504. A buffer post 502 is movably inserted into the mold opening base plate 601, and a stop cap is fixedly connected to the end of the buffer post 502.

[0061] It is used to achieve automatic mold opening, making the material cutting process faster and helping to increase production efficiency.

[0062] Please see Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 9The plug assembly 7 includes two extension plates 701, which are fixedly connected to the two end faces of the lower mounting shell 301. A mold-opening base plate 601 is connected to the ends of the extension plates 701. A guide groove 702 is formed on the top surface of the extension plates 701, and a T-shaped groove 703 is formed on the inner wall of the guide groove 702. A T-shaped slide rail 704 is slidably inserted inside the T-shaped slide rail 703. A guide slider 705 is fixedly connected to the T-shaped slide rail 704. A limiting slider 706 is fixedly connected to the top surface of the guide slider 705. A fixed short shaft 707 is fixedly connected to the side of the limiting slider 706. A rotating wheel 708 is movably sleeved on the outside of the fixed short shaft 707. A force-applying vertical plate 709 is fixedly connected to the buffer plate 504. The upper mounting shell 302 is fixedly connected to the end face. The force-applying vertical plate 709 has a force-applying inclined surface 710 at the corner near the lower mounting shell 301. The rotating wheel 708 rolls on the force-applying inclined surface 710. The limiting slider 706 is fixedly connected to the side away from the lower mounting shell 301 with a traction spring 711. The other end of the traction spring 711 is fixedly connected to a traction plate 712. The traction plate 712 is fixedly connected to the end of the mold opening base plate 601 and the end of the extension plate 701. The other side of the limiting slider 706 is fixedly connected to a plug body 713. The plug body 713 has a sealing ring groove 714. A sealing gasket 715 is embedded in the sealing ring groove 714. The sealing gasket 715 has a chamfered inclined surface 716 on the side near the lower mounting shell 301.

[0063] Used to insert the plug body 713 into the blank tube 200 to achieve automatic sealing.

[0064] The plug body 713 has an installation channel 717 inside, and the inner wall of the installation channel 717 is threaded. A threaded tube 718 is installed inside the installation channel 717 in threaded engagement. The end of the threaded tube 718 is fixedly connected to the limiting slider 706. The limiting slider 706 has a fixing cavity inside, which communicates with the threaded tube 718. The radial depth of the sealing ring groove 714 is deeper than the conventional depth, and the radial thickness of the sealing gasket 715 is thicker than the conventional thickness. Multiple constant pressure through holes 719 are equally spaced on the inner wall of the installation channel 717. The constant pressure through holes 719 and the sealing ring groove 714 are connected. The plug body 713 is connected to a guide cone 720 at its end. The end face of the guide cone 720 is provided with a channel hole that communicates with the mounting hole 717. The fixed cavity inside one limit slider 706 is fixedly connected to a booster pump 721 through a hose. A pressure relief valve is fixedly connected to the hose. The booster pump 721 is electrically connected to the control box 105. The booster pump 721 is fixedly installed on the surface of the water tank 101 and communicates with the inner cavity of the water tank 101. The fixed cavity inside another limit slider 706 is fixedly connected to an exhaust valve 722. The exhaust valve 722 is fixedly installed on the top surface of the limit slider 706.

[0065] The sealing performance of the gasket 715 is related to water pressure; the higher the water pressure, the better the sealing performance.

[0066] Please see Figure 4 and Figure 10 The pressure-holding mechanism 8 includes a pressure-holding rod 801 and a pressure-holding housing 803. One end of the pressure-holding rod 801 is fixedly connected to the bottom surface of the buffer plate 501, and the other end of the pressure-holding rod 801 passes through the buffer plate 504 and the mold base plate 601. Multiple pressure-holding ring grooves 802 are evenly spaced on the surface of the pressure-holding rod 801, and the cross-section of each pressure-holding ring groove 802 is a right-angled triangle. The pressure-holding housing 803 is fixedly connected to the bottom surface of the lower mounting shell 301. A guide sliding hole 804 is provided inside the pressure-holding housing 803. A pressure-holding cover plate 805 is bolted to one end of the pressure-holding housing 803. The pressure-holding cover plate 805 and the pressure-holding housing 803 are connected... An electromagnet 806 and a spreading spring 807 are fixedly installed on the contact surface. The electromagnet 806 is electrically connected to the control box 105. A guide plate 808 is fixedly connected to the other end of the spreading spring 807. The electromagnet 806, the spreading spring 807, and the guide plate 808 are all movably inserted into the guide sliding hole 804. A strong magnetic plate 809 is fixedly connected to the side of the guide plate 808 near the electromagnet 806. The strong magnetic plate 809 is adapted to the electromagnet 806. A fixed chamfer 810 is opened on the end face of the other end of the guide plate 808. The fixed chamfer 810 is adapted to the inclined surface inside the pressure holding ring groove 802.

[0067] Restrictions are applied to the lower template component 2 and the upper template component 3 to ensure stable mold closing of the lower template component 2 and the upper template component 3.

[0068] A method for forming a slender, strip-shaped tubular component includes the following steps;

[0069] Step 1: Place the first billet tube 200 into the billet tube groove 306;

[0070] The second step is to use the forming bracket 1 to control the action of the mold closing hydraulic device 4. Then, the mold closing hydraulic device 4 moves the upper mold plate assembly 3 to the lower mold plate assembly 2 through the buffer mechanism 5. Then, the upper mold plate assembly 3 and the lower mold plate assembly 2 close the mold. At the same time, the upper mold plate assembly 3 drives the plug assembly 7 to move. Then, the plug assembly 7 blocks the end of the blank tube 200. The pressure holding mechanism 8 fixes the mold closing state between the upper mold plate assembly 3 and the lower mold plate assembly 2.

[0071] The third step is to use the forming bracket 1 to control the plug assembly 7, and then the plug assembly 7 fills the first blank tube 200 with high-pressure water. Next, use the forming bracket 1 to control the offset of the mold closing hydraulic device 4 so that the mold closing hydraulic device 4 is aligned with another upper mold plate assembly 3. Then, the second blank tube 200 is filled into the lower mold plate assembly 2 corresponding to this upper mold plate assembly 3 and subsequent operations are performed.

[0072] Step 4: The first blank tube 200 undergoes plastic deformation under water pressure and is held under pressure for a period of time to complete the forming process. Then, the pressure is released by controlling the plug assembly 7 through the forming bracket 1. Next, the pressure holding mechanism 8 is released by controlling the forming bracket 1. After that, the upper mold assembly 3 separates from the lower mold assembly 2 under the elastic force of the mold opening mechanism 6, and then the formed blank tube 200 is taken out.

[0073] Working principle: First, the first blank tube 200 is placed in the blank tube groove 306 on a lower template assembly 2. Then, the blank tube 200 is gradually immersed in water under gravity. The inner cavity of the blank tube 200 is then filled with water, reducing subsequent water filling time and increasing production efficiency. Next, the control box 105 controls the extension of the hydraulic cylinder 405, which pushes the corresponding buffer plate 501 downwards. The buffer plate 501 then moves downwards along with the buffer column 502 and the pressure holding rod 801. The inner wall of the pressure holding ring groove 802 applies a thrust to the fixed chamfer 810. Under this thrust, the guide plate 808 retracts into the guide sliding hole 804, ensuring that the guide plate 808 does not obstruct the movement of the pressure holding rod 801. Then, the buffer plate 501 compresses the buffer spring 503, which in turn compresses the buffer plate 504, which in turn compresses the mold opening spring 602. Finally, the buffer spring 503 and the mold opening spring 602 elastically shorten. Then, the buffer plate 504 gradually moves downward. Next, the buffer plate 504 moves downward along with the upper template assembly 3 via the force-applying vertical plate 709. Then, the force-applying vertical plate 709 applies a pushing force towards the lower mounting shell 301 to the rotating wheel 708 via the force-applying inclined surface 710. Then, the rotating wheel 708 moves closer to the lower mounting shell 301. Then, the rotating wheel 708 pulls the traction spring 711, and the traction spring 711 stretches elastically, increasing its elastic potential energy. Then, the limiting slider 706 inserts the plug body 713 into the opening at the end of the blank tube 200. Then, the inner wall of the blank tube 200 applies pressure to the chamfered inclined surface 716. Then, the chamfered inclined surface 716 and the sealing gasket 715 are elastically compressed and slide into the interior of the blank tube 200. Then, under the action of elastic restoring force, the sealing gasket 715 seals the gap between the plug body 713 and the inner wall of the blank tube 200. Then, the lower mounting shell 301 and the upper mounting shell 302 are connected, and at the same time, the two template bodies 303 are connected, thus completing the mold closing.

[0074] Then, under the action of the spring force of the spreading spring 807, the guide plate 808 is inserted into the pressure holding ring groove 802. The pressure holding rod 801 is locked by the insertion action between the guide plate 808 and the pressure holding ring groove 802. Then, the buffer plate 501 fixes the mold closing state between the upper mold plate assembly 3 and the lower mold plate assembly 2 by the spring force of the buffer spring 503, ensuring that the lower mold plate assembly 2 and the upper mold plate assembly 3 will not open after the hydraulic cylinder 405 is removed.

[0075] Next, the control box 105 controls the corresponding booster pump 721 to work. The booster pump 721 then draws water from the water tank 101 and injects it through a hose into a fixed cavity inside a limit slider 706. The water in this fixed cavity then enters the blank tube 200 through a threaded pipe 718, mounting hole 717, and channel hole. Next, the water in the blank tube 200 enters another fixed cavity inside a limit slider 706 through another channel hole, mounting hole 717, and threaded pipe 718. If air is present, it is expelled through the vent valve 722 under the pressure of the water. The water pressure inside the blank tube 200 gradually increases, and then the water in the mounting hole 717 enters the annular cavity formed by the sealing gasket 715 and the inner wall of the sealing ring groove 714 through the constant pressure through hole 719. Inside, water then applies radial outward pressure to the sealing gasket 715 under water pressure. The greater the water pressure, the greater the radial pressure, and the better the sealing effect. Subsequently, the sealing gasket 715 undergoes radial and axial deformation. Radial deformation increases the sealing force between the outer surface of the sealing gasket 715 and the blank tube 200, resulting in a better sealing effect. Furthermore, radial deformation causes the chamfered bevel 716 to press against the inner wall of the blank tube 200, increasing the sealing surface and further enhancing the sealing effect. Simultaneously, axial deformation increases the sealing force between the sealing gasket 715 and the inner wall of the sealing ring groove 714, further enhancing the sealing effect. Then, the blank tube 200 gradually undergoes plastic deformation under water pressure until it adheres to the inner wall of the feature groove 307. After holding the pressure for a period of time, the forming process is completed.

[0076] After the booster pump 721 is activated, the control box 105 controls the hydraulic cylinder 405 to shorten. Then, the hydraulic cylinder 405 separates from the previous buffer plate 501. Next, the hydraulic cylinder 405 shortens to its shortest length. Then, the control box 105 controls the servo motor 404 to run. Then, the servo motor 404 drives the drive screw 403 to rotate. Then, the mold closing plate 401, under the action of the threaded engagement between itself and the drive screw 403, moves the hydraulic cylinder 405 to the top of another buffer plate 501. Then, the control box 105 controls the servo motor 404 to stop. Then, the second blank tube 200 is filled into the blank tube groove 306 on another lower mold plate assembly 2. Then, the mold closing operation is performed according to the above principle. Then, the control box 105 controls the other booster pump 721 to operate. Then, the operation is performed according to the above principle.

[0077] After the first blank tube 200 is formed, the control box 105 opens the pressure relief valve. Water inside the blank tube 200, under pressure, flows into the water tank 101 through the channel hole, mounting hole 717, threaded pipe 718, fixed cavity, hose, and pressure relief valve. The pressure inside the blank tube 200 decreases until it is completely released. The sealing gasket 715 then loses its force and recovers its elasticity, contracting radially and axially. The pressure and friction between the sealing gasket 715 and the inner wall of the blank tube 200 decrease sharply. The control box 105 then energizes the electromagnet 806, which applies a magnetic attraction to the strong magnetic plate 809. The strong magnetic plate 809 then moves the guide plate 808 into the guide sliding hole 804. The pressure ring is pulled out of the pressure-holding ring groove 802, and then the pressure-holding rod 801 is released. Then, the buffer plate 501 moves upward under the action of the buffer spring 503, and the buffer plate 504 moves upward under the action of the mold opening spring 602. Then, the buffer plate 504 moves upward with the upper template assembly 3 through the force-applying vertical plate 709. Then, the force-applying inclined surface 710 moves upward. Then, the limiting slider 706, under the action of the elastic tension of the traction spring 711, pulls the plug body 713 out of the blank tube 200 and gradually moves away from the blank tube 200 until the stop cap contacts the mold opening base plate 601. At this time, the buffer plate 501 and the plug body 713 are reset. Then, the blank tube 200 after molding is taken out. Then, the third blank tube 200 is taken out and filled into the empty blank tube groove 306. Then, the work is repeated according to the above principle.

[0078] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0079] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A forming apparatus for a slender, strip-shaped, irregularly shaped tubular component, comprising: The molding support (1) is characterized in that the molding support (1) includes a water tank (101), the top of the water tank (101) is open, the water tank (101) is filled with water, and two U-shaped arm plates (102) are fixedly installed on the top surface of the water tank (101) respectively located at both ends. A mold closing hydraulic device (4) is fixedly installed between the two U-shaped arm plates (102). Two upper template assemblies (3) are provided below the mold closing hydraulic device (4), and two lower template assemblies (2) are provided below the upper template assemblies (3). A support plate (103) and a fixing platform are fixedly installed below the lower template assemblies (2). (104), the support plate (103) and the fixed platform (104) are fixedly connected to the bottom surface of the inner cavity of the water tank (101). The two lower template components (2) are aligned with the two upper template components (3) respectively. The upper template component (3) is fixedly installed with a buffer mechanism (5). The lower template component (2) and the upper template component (3) are fixedly installed with a mold opening mechanism (6) and a plug component (7). The buffer mechanism (5) and the mold opening mechanism (6) are fixedly installed with a pressure holding mechanism (8). A control box (105) is fixedly installed on a U-shaped arm plate (102). The lower template assembly (2) includes a lower mounting shell (301), and the upper template assembly (3) includes an upper mounting shell (302). The lower mounting shell (301) and the upper mounting shell (302) are open at their close ends. The ends of the lower mounting shell (301) and the upper mounting shell (302) facing the outside of the water tank (101) are also open. A template body (303) is slidably inserted into both the lower mounting shell (301) and the upper mounting shell (302). The template body (303) is located at the end of... A T-shaped groove (304) is provided on the surface, and a T-shaped rail (305) is slidably inserted inside the T-shaped groove (304). The T-shaped rail (305) is fixedly connected to the inner wall of the lower mounting shell (301) and the upper mounting shell (302). A billet tube groove (306) is provided on the two sides of the two template bodies (303) that are close to each other. A feature groove (307) is provided on the inner wall of the billet tube groove (306). A billet tube (200) is filled inside the billet tube groove (306) and the billet tube (200) is immersed in water. Electromagnetic telescopic rods (308) are fixedly installed on both sides of the lower mounting shell (301) and the upper mounting shell (302) away from the template body (303). The electromagnetic telescopic rods (308) are electrically connected to the control box (105). Fixed through holes (309) are opened on the lower mounting shell (301) and the upper mounting shell (302). The extension rod in the electromagnetic telescopic rod (308) is movably inserted into the fixed through hole (309), and the end face of the extension rod is flush with the inner wall of the billet tube groove (306). The lower mounting shell (301) and the upper mounting shell (302) are both fixedly mounted on the two sides away from the template body (303) with a fixed cylinder (310). A locking bolt (311) is threadedly installed on the end face of the fixed cylinder (310). The locking bolt (311) passes through the fixed cylinder (310). An operating cap (312) is fixedly connected to one end of the locking bolt (311), and a locking truncated cone (313) is fixedly connected to the other end of the locking bolt (311). The locking truncated cone (313) can enter the fixed cylinder (310). A truncated cone-shaped groove (314) is opened on both the lower mounting shell (301) and the upper mounting shell (302). The small diameter end of the truncated cone-shaped groove (314) extends into the interior of the template body (303). The locking truncated cone (313) is adapted to the truncated cone-shaped groove (314).

2. The forming apparatus for a slender strip-shaped tubular component according to claim 1, characterized in that, The mold closing hydraulic device (4) includes a mold closing plate (401), which is located between two U-shaped arm plates (102). A mold closing slide rod (402) is slidably inserted into the mold closing plate (401). Both ends of the mold closing slide rod (402) are fixedly connected to the two U-shaped arm plates (102) respectively. A drive screw (403) is threadedly installed on the mold closing plate (401). Both ends of the drive screw (403) are fixedly connected to the two U-shaped arm plates (102) respectively. A servo motor is fixedly installed at one end of the drive screw (403). 404), the servo motor (404) is bolted on a U-shaped arm plate (102), the servo motor (404) is electrically connected to the control box (105), the hydraulic cylinder (405) located in the middle is bolted on the template (401), the hydraulic cylinder (405) is connected to the external hydraulic system and controlled by the control box (105), the telescopic column inside the hydraulic cylinder (405) passes through the template (401), the pressure sensor is fixedly installed on the end face of the telescopic column, and the pressure sensor is connected to the control box (105) for transmission.

3. The forming apparatus for a slender, strip-shaped, irregularly shaped tubular component according to claim 2, characterized in that, The buffer mechanism (5) includes a buffer plate (501), which is located between two U-shaped arm plates (102) and below the closing template (401). The buffer plate (501) is adapted to the hydraulic cylinder (405). A buffer column (502) is fixedly connected to the surface of the buffer plate (501) away from the closing template (401). A buffer spring (503) is movably sleeved on the outside of the buffer column (502). One end of the buffer spring (503) is fixedly connected to the surface of the buffer plate (501), and the other end of the buffer spring (503) is fixedly connected to a buffer plate (504). The buffer plate (504) is slidably sleeved on the outside of the buffer column (502) and is connected to the upper mounting shell (302) in a transmission connection.

4. The forming apparatus for a slender strip-shaped tubular component according to claim 3, characterized in that, The mold opening mechanism (6) includes a mold opening base plate (601), which is connected to the end of the lower mounting shell (301). A mold opening spring (602) is fixedly connected to the top surface of the mold opening base plate (601). The top end of the mold opening spring (602) is fixedly connected to the surface of the buffer plate (504). A buffer column (502) is movably inserted into the mold opening base plate (601). A stop cap is fixedly connected to the end of the buffer column (502).

5. The forming apparatus for a slender strip-shaped tubular component according to claim 4, characterized in that, The plug assembly (7) includes two extension plates (701), which are fixedly connected to the two end faces of the lower mounting shell (301). The mold base plate (601) is connected to the end of the extension plates (701). A guide groove (702) is provided on the top surface of the extension plate (701). A T-shaped groove (703) is provided on the inner wall of the guide groove (702). A T-shaped slide rail (704) is slidably inserted inside the T-shaped slide rail (703). A guide slider (705) is fixedly connected to the T-shaped slide rail (704). A limit slider (706) is fixedly connected to the top surface of the guide slider (705). A fixed short shaft (707) is fixedly connected to the side of the limit slider (706). A rotating wheel (708) is movably sleeved on the outside of the fixed short shaft (707). A force-applying vertical plate (709) is fixedly connected to the buffer plate (504). The force-applying vertical plate (709) and the... The upper mounting shell (302) is fixedly connected to the end face. The force-applying vertical plate (709) is provided with a force-applying inclined surface (710) at the corner near the lower mounting shell (301). The rotating wheel (708) rolls on the force-applying inclined surface (710). The limiting slider (706) is fixedly connected to a traction spring (711) on the side away from the lower mounting shell (301). The other end of the traction spring (711) is fixedly connected to a traction plate (712). The traction plate (712) is fixedly connected to the end of the mold opening base plate (601) and the end of the extension plate (701). The other side of the limiting slider (706) is fixedly connected to a plug body (713). A sealing ring groove (714) is provided on the plug body (713). A sealing gasket (715) is embedded inside the sealing ring groove (714). A chamfered inclined surface (716) is provided on the side of the sealing gasket (715) near the lower mounting shell (301).

6. The forming apparatus for a slender strip-shaped tubular component according to claim 5, characterized in that, The plug body (713) has an installation channel (717) inside. The inner wall of the installation channel (717) is threaded. A threaded tube (718) is installed inside the installation channel (717) in threaded engagement. The end of the threaded tube (718) is fixedly connected to the limiting slider (706). The limiting slider (706) has a fixed cavity inside, which communicates with the threaded tube (718). Multiple constant pressure through holes (719) are equally spaced on the inner wall of the installation channel (717). The constant pressure through holes (719) communicate with the sealing ring groove (714). A guide cone is fixedly connected to the end of the plug body (713). 720), the end face of the guide cone (720) is provided with a channel hole that communicates with the mounting hole (717). The fixed cavity inside one limit slider (706) is fixedly connected to a booster pump (721) through a hose. A pressure relief valve is fixedly connected to the hose. The booster pump (721) is electrically connected to the control box (105). The booster pump (721) is fixedly installed on the surface of the water tank (101) and communicates with the inner cavity of the water tank (101). The fixed cavity inside another limit slider (706) is fixedly connected to an exhaust valve (722). The exhaust valve (722) is fixedly installed on the top surface of the limit slider (706).

7. The forming apparatus for a slender strip-shaped tubular component according to claim 4, characterized in that, The pressure holding mechanism (8) includes a pressure holding rod (801) and a pressure holding shell (803). One end of the pressure holding rod (801) is fixedly connected to the bottom surface of the buffer plate (501), and the other end of the pressure holding rod (801) passes through the buffer plate (504) and the mold base plate (601). Multiple pressure holding ring grooves (802) are evenly spaced on the surface of the pressure holding rod (801). The cross-section of the pressure holding ring groove (802) is a right triangle. The pressure holding shell (803) is fixedly connected to the bottom surface of the lower mounting shell (301). A guide sliding hole (804) is provided inside the pressure holding shell (803). A pressure holding cover plate (805) is bolted to one end of the pressure holding shell (803). The pressure holding cover plate (805) and the pressure holding shell (803) are connected. An electromagnet (806) and a spreading spring (807) are fixedly installed on the contact surface. The electromagnet (806) is electrically connected to the control box (105). A guide plate (808) is fixedly connected to the other end of the spreading spring (807). The electromagnet (806), the spreading spring (807), and the guide plate (808) are all movably inserted into the guide sliding hole (804). A strong magnetic plate (809) is fixedly connected to the side of the guide plate (808) near the electromagnet (806). The strong magnetic plate (809) is compatible with the electromagnet (806). A fixed chamfer (810) is provided on the end face of the other end of the guide plate (808). The fixed chamfer (810) is compatible with the inclined surface inside the pressure ring groove (802).

8. A method for forming a slender, elongated, irregularly shaped tubular component, using the forming apparatus for a slender, elongated, irregularly shaped tubular component as described in claim 7, characterized in that, Includes the following steps; Step 1: Place the first billet tube (200) in the billet tube groove (306); Step 2: Use the forming bracket (1) to control the action of the mold closing hydraulic device (4). Then, the mold closing hydraulic device (4) moves the upper template assembly (3) to the lower template assembly (2) through the buffer mechanism (5). Then, the upper template assembly (3) and the lower template assembly (2) close the mold. At the same time, the upper template assembly (3) drives the plug assembly (7) to move. Then, the plug assembly (7) blocks the end of the blank tube (200). The pressure holding mechanism (8) fixes the mold closing state between the upper template assembly (3) and the lower template assembly (2). Third step: Use the forming bracket (1) to control the plug assembly (7), then fill the first blank tube (200) with high pressure water using the plug assembly (7), then use the forming bracket (1) to control the offset of the mold closing hydraulic device (4) so ​​that the mold closing hydraulic device (4) is aligned with another upper template assembly (3), then fill the second blank tube (200) into the lower template assembly (2) corresponding to this upper template assembly (3) and perform subsequent operations; Step 4: The first blank tube (200) undergoes plastic deformation under water pressure and is held under pressure for a period of time to complete the molding process. Then, the pressure is released by controlling the plug assembly (7) through the molding bracket (1). Next, the pressure holding mechanism (8) is released by controlling the molding bracket (1). After that, the upper template assembly (3) separates from the lower template assembly (2) under the elastic force of the mold opening mechanism (6). Then, the molded blank tube (200) is taken out.

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