Forming module of cylindrical rubber bag hydraulic machine

Abstract

The utility model relates to hydraulic machining equipment, and particularly discloses a forming module of a cylindrical rubber bag hydraulic machine. The forming module comprises a cylinder, an upper die assembly and a lower die assembly, and a pressurizing cavity is formed in the forming cylinder; the upper die assembly comprises a supporting piece and a pressure applying piece, the lower die assembly comprises a lower cushion block and a pressure bearing die, and the lower cushion block and the supporting piece are oppositely arranged up and down; two middle check blocks are arranged between the lower cushion block and the supporting piece, and a forming interval is defined by the lower cushion block, the supporting piece and the two middle check blocks; and the pressure-bearing die is movably arranged in the forming section. According to the cylinder type rubber bag hydraulic machine, a rubber bag pressurization mode is adopted for carrying out forming machining on a metal plate, and the cylinder type rubber bag hydraulic machine has the advantages of being wide in application range and high in forming quality.

Description

Technical Field

[0001] The utility model relates to hydraulic processing equipment, in particular to a forming module of a cylindrical rubber bag hydraulic press. Background Art

[0002] Metal sheets are a common metal structural part, widely used in shell pressure bearing, plastic shaping, moving parts enclosure and other occasions. Metal sheets are mainly formed by sheet metal processing, including shearing, punching, folding, welding and other process steps, usually using shearing machines, punching machines, bending machines and other equipment for production and processing.

[0003] However, for some metal sheet parts with higher requirements, existing traditional processing technologies are difficult to achieve. For example, in occasions such as aircraft fuselages and missiles that have high requirements for sheet integrity and surface quality, existing processing technologies are difficult to meet the processing needs. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a forming module of a cylindrical rubber bag hydraulic press, which adopts a rubber bag pressurizing method to form metal plates, and has the advantages of wide application range and high forming quality.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: A forming module of a cylindrical rubber bag hydraulic press, comprising a cylinder, an upper mold assembly and a lower mold assembly; a cylindrical pressurizing chamber is provided in the forming cylinder, and the upper mold assembly and the lower mold assembly are movably arranged in the pressurizing chamber; the upper mold assembly comprises a support member and a pressure member, the upper side surface of the support member is tightly matched with the inner wall of the pressurizing chamber, the pressure member is located below the support member and is connected to the support member; the pressure member includes a rubber bag; the lower mold assembly comprises a lower pad and a pressure-bearing die, the lower side surface of the lower pad is tightly matched with the inner wall of the pressurizing chamber, and the lower pad and the support member are vertically opposed; two intermediate blocks are provided between the lower pad and the support member, the outer sides of the two intermediate blocks are tightly matched with the inner wall of the pressurizing chamber, and the lower pad, the support member and the two intermediate blocks together enclose a forming area; the pressure-bearing die and the lower pad are separately provided and movably arranged in the forming area, and a mold cavity corresponding to the rubber bag is provided on the upper side of the pressure-bearing die.

[0006] During processing, the sheet blank is placed in the mold cavity, and high-pressure liquid is introduced into the rubber bag through the hydraulic module to pressurize it. The rubber bag expands and deforms and extends into the mold cavity to extrude the sheet blank. The rubber bag and the pressure die work together to extrude the sheet into shape.

[0007] During the molding process, molding pressure is transmitted to the cylinder through the supports, lower pads, and intermediate blocks, and is then borne by the cylinder. This ensures balanced circumferential force on the molding module. Axial pressure is borne by the supports and pressure-bearing die, preventing it from being transmitted to the frame. The molding process has minimal impact on external supports, ensuring excellent equipment stability.

[0008] Because the forming pressure is provided by the hydraulically driven expansion of the rubber bladder, the forming process is smooth. The elastic properties of the rubber bladder also ensure even pressure across the sheet, resulting in excellent forming and surface quality. Compared to traditional stamping dies, rubber bladder pressure forming has fewer restrictions on the area of application, allowing for the processing of both large and thick sheets, as well as small and thin sheets. The movable design of the pressure-bearing die not only facilitates sheet loading and unloading but also allows for product changes by simply replacing the pressure-bearing die, providing excellent flexibility.

[0009] The cylindrical rubber bag hydraulic press of the present application uses a rubber bag pressurization method to form metal plates, and has the advantages of a wide range of applications and high forming quality.

[0010] Preferably, the support member includes an upper pad and a containing frame, wherein the containing frame is located below the upper pad and connected to the upper pad;

[0011] Two limiting protrusions are provided on the lower side of the container frame. The limiting protrusions are located at the ends of the pressurized cavity and are arranged through the lower side of the container frame along the width direction. The space between the two limiting protrusions is a containing interval. The pressure member is located in the containing interval and is connected to the container frame.

[0012] The containing frame is used for connecting and limiting the pressure piece. During the processing and forming process, the circumferential pressure of the pressure piece is directly transmitted to the inner wall of the cylinder and borne by the cylinder, while the end pressure is borne by the two limiting protrusions.

[0013] Preferably, the end of the rubber bag contacts the limiting protrusion, and the lower edges of the corresponding ends of the rubber bag and the limiting protrusion are provided with a sealing profile made of rigid material; the lower side of the limiting protrusion is connected to a plurality of limiting plugs, and the limiting plugs extend to the bottom of the sealing profile and cooperate with the sealing profile to limit.

[0014] During pressurization, the rubber bladder expands in all directions, potentially extending into the gap between the containment frame and the pressure die. This deformation of the bladder into this gap can affect its structural stability and service life. A rigid sealing profile can limit this end-to-end deformation, effectively preventing it from expanding into the gap between the containment frame and the pressure die. The limit plate also acts as a limiter for the sealing profile, limiting its minimum height and preventing it from interfering with assembly and disassembly operations during the pressure die.

[0015] Preferably, the intermediate stop block includes a main block and a wedge block, and each of the two ends of the main block corresponds to a wedge block; the lower side surface of the main block contacts the lower pad, and the wedge block is arranged between the main block and the support member; the upper end face and the lower end face of the wedge block are arranged relatively inclined.

[0016] Preferably, the pressure-bearing die is provided with a plurality of walking units corresponding to the guide rails, and the walking units include rollers;

[0017] The lower pad is provided with countersunk holes corresponding to the walking units one by one. A floating assembly is provided in the countersunk hole. The floating assembly includes a floating plate and a floating elastic member. The floating plate is arranged in the countersunk hole to float up and down through the floating elastic member.

[0018] During assembly and disassembly of the pressure-bearing die, the die rolls along the guide rails via the travel unit, providing excellent ease of operation. During the pressurized molding process, as pressure increases, the travel unit compresses the floating elastic member via the floating plate, causing the die to descend until the die body contacts the lower pad. The die body bears the primary pressure during molding, while the travel unit bears limited pressure, thus protecting the moving parts. After molding is complete, as pressure is removed, the floating assembly drives the die and roller upwards to reset, facilitating die disassembly.

[0019] Preferably, the pressure-bearing mold includes a main body, two pressure-bearing bosses are provided on the upper surface of the main body, two deformation baffles are connected between the two pressure-bearing bosses, the pressure-bearing bosses and the deformation baffles together enclose a mold cavity, and the deformation baffles are arranged close to the side of the pressure-bearing bosses.

[0020] During the molding process, the deformation baffle is positioned opposite the intermediate block. Under the deformation pressure of the rubber bladder, the deformation baffle deforms outward and contacts the intermediate block, transferring the pressure to the intermediate block, which is ultimately borne by the cylinder. When the deformation pressure of the rubber bladder is relieved, the deformation baffle returns inward and separates from the intermediate block, facilitating the complete removal of the pressure-bearing mold.

[0021] Preferably, the forming module further comprises a serial connection component, the serial connection component comprises a serial connection rod and a plurality of serial connection ears, each of the serial connection ears is provided with a serial connection hole, and the serial connection rod matches the serial connection hole; the cylinder, the upper mold assembly and the lower mold assembly are respectively provided with serial connection ears, and during the forming process, the serial connection holes on the serial connection ears at the same end of the cylinder are aligned up and down.

[0022] The tandem assembly axially positions the upper and lower mold assemblies during loading and unloading of the molding module assembly machine, ensuring accurate axial installation. Furthermore, if the rubber bladder ruptures during processing, making it difficult to remove the pressure-bearing mold, the tandem assembly can be used to connect the upper and lower molds into a single unit, allowing them to be removed from the pressurized chamber for maintenance.

[0023] Preferably, the pressure member further comprises a core plate made of a rigid material, the core plate being connected to the support member, the core plate comprising a connecting block and a sealing convex edge, the sealing convex edge being annularly arranged around the connecting block, and the upper end surface of the sealing convex edge being lower than the upper end surface of the connecting block;

[0024] The upper end of the rubber bag is open and forms a sealing opening; the core plate extends into the rubber bag from the sealing opening, and the edge of the sealing opening extends between the sealing convex edge and the support member. The core plate and the support member jointly press the edge of the sealing opening to achieve sealing of the sealing opening.

[0025] Preferably, the core plate is connected to the support member through a floating connector, the floating connector is connected to the support member in an up and down floating manner, and the floating connector is fixedly connected to the core plate and floats up and down synchronously; the up and down floating distance of the floating connector relative to the support member is recorded as L, and the thickness of the core plate is recorded as S, L=0.05S~0.1S.

[0026] When the rubber bag is pressurized, the core plate moves upward under the action of the internal pressure, the distance between the sealing convex edge and the support member decreases, and the pressing force of the sealing convex edge on the edge of the sealing port increases, which can achieve a certain self-sealing effect and ensure the sealing.

[0027] Preferably, an oil delivery channel is provided in the support member, and an oil hole is provided on the core plate, and the oil hole is arranged to pass through the core plate up and down; the first end of the oil delivery channel is located at the end of the support member and is connected to the control channel, and the second end of the oil delivery channel is located at the lower side of the support member and is connected to the oil hole on the core plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of the cylindrical rubber bag hydraulic press of this embodiment;

[0029] Figure 2 This is a schematic structural diagram of the cylindrical rubber bag hydraulic press of this embodiment, which does not include the hydraulic module;

[0030] Figure 3 This is a schematic structural diagram of the forming module in the cylindrical rubber bag hydraulic press of this embodiment, wherein the pressure-bearing die is located inside the cylinder;

[0031] Figure 4 1 is a side view of the forming module in the cylindrical rubber bladder hydraulic press of this embodiment;

[0032] Figure 5 This is a schematic structural diagram of the forming module in the cylindrical rubber bag hydraulic press of this embodiment, wherein the pressure-bearing die is located outside the cylinder;

[0033] Figure 6 This is a schematic structural diagram of the cooperation between the loading and unloading drive assembly and the pressure-bearing die in the cylindrical rubber bag hydraulic press of this embodiment;

[0034] Figure 7 for Figure 6 A partial enlarged view of point A in the middle;

[0035] Figure 8 2 is a cross-sectional view of the pressure-bearing module in the cylindrical rubber bag hydraulic press of this embodiment;

[0036] Figure 9 for Figure 8 A partial enlarged view of point B in the middle;

[0037] Figure 10 for Figure 8 A partial enlarged view of point C in the middle;

[0038] Figure 11 This is a schematic structural diagram of the cooperation between the pressure member and the receiving frame in the cylindrical rubber bag hydraulic press of this embodiment;

[0039] Figure 12 This is a structural diagram showing the cooperation between the pressure member and the receiving frame in the cylindrical rubber bag hydraulic press of this embodiment from another perspective;

[0040] Figure 13 This is an exploded view of the cooperation between the pressure member and the container frame of the cylindrical rubber bag hydraulic press of this embodiment;

[0041] Figure 14 This is an exploded view of the pressure member in the cylindrical rubber bag hydraulic press of this embodiment;

[0042] Figure 15 Schematic diagram of the structure of the pressure-bearing die in the cylindrical rubber bag hydraulic press of this embodiment;

[0043] Figure 16 This is a schematic structural diagram of the cooperation between the pressure-bearing die and the floating assembly in the cylindrical rubber bag hydraulic press of this embodiment. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example

[0045] like Figure 1 and Figure 2As shown, a cylindrical rubber bladder 272 hydraulic press includes a frame, a forming module 2, and a hydraulic module 3. The frame includes a forming base 12 and an operating table 11, which is located on one side of the forming base 12. Specifically, there are two operating tables 11, and the forming base 12 is located between the two operating tables 11.

[0046] like Figures 1-4 As shown, the forming module 2 includes a cylinder 22, an upper mold assembly 23, and a lower mold assembly. The forming cylinder 22 is horizontally mounted on the forming base 12. A cylindrical pressurized chamber is defined within the forming cylinder 22. The upper and lower mold assemblies are movably mounted within the pressurized chamber, and the operating table 11 is aligned with the pressurized chamber. Since the cylinder 22 is the primary pressure-bearing component, a reinforcement ring is provided on the outer side of the cylinder 22. In a specific embodiment, a reinforcement ring is provided at each end of the cylinder 22.

[0047] like Figure 3 、 Figure 4 and Figure 8 As shown, the upper mold assembly 23 includes a support member and a pressure member 27. The upper side surface of the support member is tightly matched with the inner wall of the pressurized cavity. The pressure member 27 is located below the support member and is connected to the support member.

[0048] like Figure 3 、 Figure 4 and Figure 8 As shown, the support member includes an upper pad 231 and a frame 232. The frame 232 is located below the upper pad 231 and is connected to the upper pad 231. Figure 11-13 As shown, two limiting protrusions 2321 are provided on the lower side of the container frame 232. The limiting protrusions 2321 are located at the end of the pressurized cavity and are arranged through the lower side of the container frame 232 along the width direction. The space between the two limiting protrusions 2321 is a containing interval 2322. The pressure member 27 is located in the containing interval 2322 and is connected to the container frame 232.

[0049] The receiving frame 232 is used for connecting and limiting the pressure member 27 . During the processing and forming process, the circumferential pressure of the pressure member 27 is directly transmitted to the inner wall of the cylinder 22 and borne by the cylinder 22 , while the end pressure is borne by the two limiting protrusions 2321 .

[0050] like Figures 8-10As shown, the pressure member 27 comprises a rubber bladder 272 made of an elastic material and a core plate 271 made of a rigid material. The upper end of the rubber bladder 272 is open and forms a seal. The rubber bladder 272 comprises an inner tube 2722 and an outer tube 2721. The inner tube 2722 is made of polyurethane or nitrile rubber, while the outer tube 2721 is made of rubber. The inner tube 2722 and the outer tube 2721 are relatively slidable. During processing, the inner tube 2722 primarily serves as a seal, while the outer tube 2721 primarily bears pressure and deforms with the mold to force the sheet into shape.

[0051] like Figure 9 and Figure 14 As shown, the core plate 271 is connected to the support member and includes a connecting block 2712 and a sealing flange 2713. The sealing flange 2713 is arranged in an annular manner around the connecting block 2712, and the upper end surface of the sealing flange 2713 is lower than the upper end surface of the connecting block 2712. The upper end surface of the sealing flange 2713 is inclined upward from the inside to the outside.

[0052] like Figure 9 and Figure 14 As shown, the core plate 271 extends from the sealing port into the rubber bag 272, and the edge of the sealing port extends between the sealing flange 2713 and the support member. The core plate 271 and the support member jointly press the edge of the sealing port to achieve sealing of the sealing port.

[0053] Furthermore, the core plate 271 is connected to the support member via a floating connector. The floating connector is connected to the support member in a floating manner. The floating connector is fixedly connected to the core plate 271 and floats up and down synchronously. The floating distance of the floating connector relative to the support member is denoted as L. The thickness of the core plate 271 is denoted as S, where L = 0.05S to 0.1S.

[0054] When the rubber bag 272 is pressurized, the core plate 271 moves upward under the action of the internal pressure, the distance between the sealing flange 2713 and the support member decreases, and the pressing force of the sealing flange 2713 on the edge of the sealing port increases, which can achieve a certain self-sealing effect and ensure the sealing performance.

[0055] like Figure 3-Figure 5 As shown, the lower mold assembly includes a lower pad 25 and a pressure-bearing mold 21. The lower side of the lower pad 25 tightly fits the inner wall of the pressurized chamber, and the lower pad 25 and the support member are vertically opposed. Two intermediate blocks 26 are provided between the lower pad 25 and the support member. The outer sides of the two intermediate blocks 26 tightly fit the inner wall of the pressurized chamber. The intermediate blocks 26 provide support between the lower pad 25 and the support member. The lower pad 25, the support member, and the two intermediate blocks 26 together enclose a molding area.

[0056] It should be noted that the surfaces that fit closely with the walls of the pressurized chamber, namely the upper side surface of the support member, the upper side surface of the lower pad, and the outer side surface of the middle stop block are all curved surfaces with the same curvature as the inner wall of the pressurized chamber, wherein the upper side surface of the support member includes the upper side surface of the upper pad and the outer side surface of the frame.

[0057] like Figure 4 As shown, specifically, the intermediate block 26 includes a main block 262 and a wedge block 261, with each main block 262 having a corresponding wedge block 261 at each end. The lower side of the main block 262 contacts the lower pad 25, and the wedge block 261 is disposed between the main block 262 and the support member. The upper and lower end surfaces of the wedge block 261 are inclined relative to each other, and correspondingly, the support member is provided with an inclined surface that matches the wedge block 261. Specifically, a wedge groove is provided on the lower side of the upper limit projection 2321 of the container frame 232. The width of the wedge groove matches the wedge block 261, and the bottom surface of the wedge groove is an inclined surface that matches the wedge block 261.

[0058] like Figure 4 As shown, a first lateral positioning assembly is provided between the main block 262 and the lower pad 25, and a second lateral positioning assembly is provided between the main block 262 and the wedge block 261. The first lateral positioning assembly includes a first positioning slot and a first positioning block provided parallel to the main block 262, with one of the first positioning slot and the first positioning block provided on the main block 262 and the other provided on the lower pad 25. The second lateral positioning assembly includes a second positioning slot and a second positioning block provided parallel to the main block 262, with one of the second positioning slot and the second positioning block provided on the main block 262 and the other provided on the wedge block 261.

[0059] like Figure 1-Figure 5 As shown, the pressure-bearing mold 21 and the lower pad 25 are separate components and are movably positioned within the molding area. A mold cavity 212 corresponding to the rubber bladder 272 is provided on the upper side of the pressure-bearing mold 21. There are two pressure-bearing molds 21, each corresponding to one of the operating platforms 11. The two operating platforms 11 can be loaded and unloaded in turns, improving processing efficiency.

[0060] Specifically, such as Figure 15As shown, the pressure-bearing mold 21 comprises a main body, with two pressure-bearing bosses disposed on its upper surface. Two deformable baffles 211 are connected between the two pressure-bearing bosses. The pressure-bearing bosses and the deformable baffles 211 together enclose a mold cavity 212, with the deformable baffles 211 positioned adjacent to the sides of the pressure-bearing bosses. During the molding process, the deformable baffles 211 are positioned opposite the intermediate block 26. Under the deforming pressure of the rubber bladder 272, the deformable baffles 211 deform outward and contact the intermediate block 26, transferring the pressure to the intermediate block 26, which is ultimately borne by the cylinder 22. Once the deforming pressure of the rubber bladder 272 is released, the deformable baffles 211 return inward and separate from the intermediate block 26, facilitating the complete removal of the pressure-bearing mold 21.

[0061] Specifically, such as Figure 9 As shown, the end of the rubber bladder 272 contacts the limiting protrusion 2321, and a sealing profile 2723 made of a rigid material is provided at the lower edge of the corresponding ends of the rubber bladder 272 and the limiting protrusion 2321. A plurality of limiting inserts 28 are connected to the lower side of the limiting protrusion 2321. The limiting inserts 28 extend below the sealing profile 2723 and cooperate with the sealing profile 2723 to limit the position.

[0062] During pressurization, the rubber bladder 272 expands in all directions, potentially extending end-overward into the gap between the containment frame 232 and the pressure-bearing die 21. This deformation of the rubber bladder 272 into this gap can negatively impact its structural stability and service life. The rigid sealing profile 2723 limits the end-overward deformation of the rubber bladder 272, effectively preventing it from expanding into the gap between the containment frame 232 and the pressure-bearing die 21. The limiting plate 28 also limits the sealing profile 2723, limiting its minimum height and preventing it from interfering with assembly and disassembly operations of the pressure-bearing die 21.

[0063] like Figure 10 As shown, the hydraulic module 3 includes a hydraulic source and a control channel. The control channel connects the hydraulic source and the rubber bladder 272. An oil channel 31 is provided within the support member, and an oil hole is provided in the core plate 271, extending vertically through the core plate 271. The first end of the oil channel 31 is located at the end of the support member and connects to the control channel. The second end of the oil channel 31 is located on the underside of the support member and connects to the oil hole in the core plate 271.

[0064] like Figure 10Specifically, to accommodate the vertical floating design of the core plate 271, an oil inlet nozzle 2321 is fixedly mounted on the support member. The oil inlet nozzle 2321 communicates with the second section of the oil delivery channel 31 and is inserted into the oil hole. The oil inlet nozzle 2321 and the oil hole are axially slidingly sealed. Specifically, an oil inlet seat 2711 is disposed in the oil hole, and the oil inlet nozzle 2321 and the oil inlet seat 2711 are axially slidingly sealed.

[0065] The hydraulic source includes an oil storage tank, a main pump and a vacuum pump. The control channel includes a pressurization branch, a pressure relief branch and a vacuum branch arranged in parallel. The pressurization branch is connected to the oil storage tank through the main pump, the pressure relief branch is directly connected to the oil storage tank, and the vacuum branch is connected to the oil storage tank through the vacuum pump.

[0066] The pressurization branch comprises a main pressurization branch and a booster branch connected in parallel. The booster branch is equipped with a supercharger. The pressurization process is divided into two stages. In the first stage, the main pump directly pressurizes the main pressurization branch, delivering 0.9-0.95% of the preset oil volume. Subsequently, the main pump pressurizes the booster branch. The first stage allows for rapid infusion, while the second stage ensures that the pressure reaches the preset value.

[0067] The pressure relief branch is equipped with a booster. During pressure relief, the hydraulic oil in the rubber bladder 272 is first discharged into the oil reservoir through the pressure relief branch. The vacuum pump then operates to create a negative pressure within the rubber bladder 272. The booster on the pressure relief branch controls the pressure relief speed and prevents excessive pressure drop. The vacuum pump ensures that the rubber bladder 272 fully deflates and exits the mold cavity 212.

[0068] To ensure smooth and reliable vacuuming, the lower surface of core plate 271 is recessed inward to form a vacuum groove. The oil holes are located within this vacuum groove, and several support blocks 273 are distributed within this groove. During vacuuming, the inner wall of rubber bladder 272 within the vacuum groove and the bottom surface of the groove are blocked by support blocks 273, resulting in a constant gap. This prevents the oil holes from becoming clogged, ensuring smooth vacuuming.

[0069] During processing, the sheet blank is placed in the mold cavity 212, and high-pressure liquid is introduced into the rubber bag 272 through the hydraulic module 3 to pressurize it. The rubber bag 272 expands and deforms and extends into the mold cavity 212 to extrude the sheet blank. The rubber bag 272 and the pressure-bearing die 21 work together to extrude the sheet into shape.

[0070] During the molding process, the molding pressure is transmitted to the cylinder 22 through the supports, lower pad 25, and intermediate block 26, and is then borne by the cylinder 22. This balances the forces on the molding module 2 in the circumferential direction. Axial pressure is borne by the supports and pressure-bearing die 21, preventing the molding pressure from being transmitted to the frame. The molding process has minimal impact on external supports, ensuring excellent equipment stability.

[0071] Because the forming pressure is provided by the expansion of the hydraulically driven rubber bladder 272, the forming process is smooth. At the same time, due to the elastic properties of the rubber bladder 272, the pressure on each part of the sheet is balanced, and the forming quality and surface quality of the sheet are excellent. Compared with traditional stamping dies, the rubber bladder 272 has fewer restrictions on the area of pressurized forming, and can process large-area and thick-thick sheets, as well as small-area and thin-thick sheets. The movable setting of the pressure-bearing die 21 not only facilitates the loading and unloading operations of the sheet, but also allows the product to be changed by replacing the pressure-bearing die 21, which provides excellent flexibility.

[0072] The cylindrical rubber bag 272 hydraulic press of the present application uses the rubber bag 272 to pressurize the metal plate to form the metal plate, which has the advantages of wide application range and high forming quality.

[0073] Furthermore, the operating table 11 is provided with a guide rail, which is arranged parallel to the center line of the pressurized chamber. Figure 15 As shown, the pressure-bearing mold 21 is provided with a plurality of walking units 213 corresponding to the guide rails, and the walking units 213 include rollers. Figure 16 As shown, the lower pad 25 is provided with a countersunk hole corresponding to the walking unit 213 one by one, and a floating component 29 is provided in the countersunk hole. The floating component 29 includes a floating plate 291 and a floating elastic member 292. The floating plate 291 is set in the countersunk hole to float up and down through the floating elastic member 292.

[0074] During assembly and disassembly of the pressure-bearing die 21, the die 21 rolls along the guide rails via the travel unit 213, providing excellent operational convenience. During the pressurized molding process, as pressure increases, the travel unit 213 compresses the floating elastic member 292 via the floating plate 291, causing the die 21 to descend until the die 21's main body contacts the lower pad 25. The pressure during the molding process is primarily borne by the die 21's main body, while the travel unit 213 experiences limited pressure, thus protecting the moving parts. After the molding process is complete, as pressure is removed, the floating assembly 29 drives the die 21 and roller upward to reset, facilitating disassembly of the die 21.

[0075] Specifically, such as Figure 6 and Figure 7As shown, the operating table 11 is further provided with a loading and unloading drive assembly 13, which includes a transmission block 132 and a drive cylinder 131. The transmission block 132 is fixedly connected to the pressure-bearing die 21. The transmission block 132 is provided with a connecting hole, and the transmission rod is connected to the transmission block 132 through the connecting hole. The loading and unloading drive assembly 13 can drive the pressure-bearing die 21 to move, realizing automated loading and unloading operations.

[0076] Specifically, such as Figure 7 As shown, the connecting hole is a long strip hole extending in the vertical direction. The long strip hole leaves a certain space for the transmission block 132 to move up and down relative to the driving cylinder 131, and correspondingly leaves space for the movement of the pressure mold 21 during processing.

[0077] Furthermore, if Figure 3 As shown, the molding module 2 further includes a connection assembly, which includes a connection rod and a plurality of connection ears 24. Each connection ear 24 is provided with a connection hole, and the connection rod matches the connection hole. The connection assembly is located at at least one end of the cylinder 22, and can also be provided at both ends. The cylinder 22, upper pad 231, frame 232, lower pad 25, and pressure mold 21 are each provided with a connection ear 24. During the molding process, the connection holes on the connection ears 24 at the same end of the cylinder 22 are aligned vertically.

[0078] The connecting assembly can axially position the upper and lower mold assemblies during the loading and unloading process of the molding module 2 assembly machine, ensuring axial installation accuracy. Furthermore, if the rubber bladder 272 ruptures during processing, making it difficult to remove the pressure-bearing mold 21, the connecting assembly can be used to connect the upper and lower molds into a single unit, allowing them to be removed from the pressurized chamber for maintenance.

[0079] Furthermore, a loading positioning assembly is provided between the pressure-bearing die 21 and the lower pad 25. This assembly comprises a movable positioning block and a fixed positioning pin. The movable positioning block is provided on the pressure-bearing die 21, while the fixed positioning pin is provided on the lower pad 25. The movable positioning block is provided with a movable positioning hole that engages with the fixed positioning pin during the molding process. To enhance automation, a switch can be provided between the movable positioning block and the fixed positioning pin.

[0080] A hydraulic processing method using the cylindrical rubber bladder 272 hydraulic press as described above;

[0081] At least the following steps are included:

[0082] S1. Installation: Place the pressure die 21 on the operating table 11 and the plate blank to be processed in the die cavity 212; transfer the pressure die 21 and the plate blank as a whole to the forming area.

[0083] S2. Pressurization: Hydraulic module 3 operates. The main pump first injects hydraulic oil into rubber bladder 272 via the main pressurization branch, reaching a preset level of 0.9-0.95. The main pump then switches to the boost branch, continuing to pump hydraulic oil into rubber bladder 272 via the intensifier until the preset level is reached. During this process, rubber bladder 272 expands downward and gradually extends into mold cavity 212, squeezing the sheet material and forming it.

[0084] S3. Pressure Relief: After maintaining pressure for a preset time, the hydraulic oil is slowly discharged into the oil reservoir via the booster in the pressure relief branch. Once the oil pressure in rubber bladder 272 drops to a preset level, the vacuum pump continues to operate, draining the hydraulic oil from rubber bladder 272 until negative pressure is established. During this process, rubber bladder 272 contracts and exits mold cavity 212.

[0085] S4. Unloading: The pressure-bearing die 21 is removed from the forming area and transferred to the operating table 11 , and the processed sheet is removed from the pressure-bearing die 21 .

[0086] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A forming module for a cylindrical rubber bladder hydraulic press, characterized in that: The moulding cylinder comprises a cylindrical pressurized chamber, and the upper mould assembly and the lower mould assembly are movably arranged in the pressurized chamber; the upper mould assembly comprises a support and a pressure-applying member, the upper side surface of the support is tightly matched with the inner wall of the pressurized chamber, the pressure-applying member is located below the support and is connected to the support; the pressure-applying member comprises a rubber bag; the lower mould assembly comprises a lower pad and a pressure-bearing mould, the lower side surface of the lower pad is tightly matched with the inner wall of the pressurized chamber, and the lower pad and the support are opposite to each other up and down; two intermediate blocks are provided between the lower pad and the support, and the outer sides of the two intermediate blocks are tightly matched with the inner wall of the pressurized chamber, and the lower pad, the support and the two intermediate blocks jointly enclose a forming interval; the pressure-bearing mould and the lower pad are separately arranged and movably arranged in the forming interval, and a mould cavity corresponding to the rubber bag is provided on the upper side of the pressure-bearing mould.

2. The forming module according to claim 1, characterized in that: The support member includes an upper pad and a receiving frame, wherein the receiving frame is located below the upper pad and connected to the upper pad; Two limiting protrusions are provided on the lower side of the container frame. The limiting protrusions are located at the ends of the pressurized cavity and are arranged through the lower side of the container frame along the width direction. The space between the two limiting protrusions is a containing interval. The pressure member is located in the containing interval and is connected to the container frame.

3. The forming module according to claim 2, characterized in that: The end of the rubber bag contacts the limiting protrusion, and the lower edges of the corresponding ends of the rubber bag and the limiting protrusion are provided with a sealing profile made of rigid material; the lower side of the limiting protrusion is connected to a plurality of limiting plugs, and the limiting plugs extend to the bottom of the sealing profile and cooperate with the sealing profile to limit the position.

4. The forming module according to claim 1, characterized in that: The intermediate block includes a main block and a wedge block, and each of the two ends of the main block corresponds to a wedge block; the lower side of the main block contacts the lower pad, and the wedge block is arranged between the main block and the support member; the upper end face and the lower end face of the wedge block are relatively inclined.

5. The forming module according to claim 1, characterized in that: The pressure-bearing mold is provided with several walking units, and the walking units include rollers; the lower pad is provided with countersunk holes corresponding to the walking units one by one, and a floating component is provided in the countersunk holes, and the floating component includes a floating plate and a floating elastic member, and the floating plate is arranged in the countersunk hole to float up and down through the floating elastic member.

6. The forming module according to claim 1, characterized in that: The pressure-bearing mold includes a main body, and two pressure-bearing bosses are provided on the upper surface of the main body. Two deformation baffles are connected between the two pressure-bearing bosses. The pressure-bearing bosses and the deformation baffles together enclose a mold cavity, and the deformation baffles are arranged close to the side of the pressure-bearing bosses.

7. The forming module according to claim 1, characterized in that: The forming module also includes a serial connection component, which includes a serial connection rod and several serial connection ears. Each of the serial connection ears is provided with a serial connection hole, and the serial connection rod matches the serial connection hole; the cylinder, upper mold assembly and lower mold assembly are respectively provided with serial connection ears. During the forming process, the serial connection holes on the serial connection ears at the same end of the cylinder are aligned up and down.

8. The forming module according to any one of claims 1 to 7, characterized in that: The pressure-applying member also includes a core plate made of a rigid material, which is connected to the support member. The core plate includes a connecting block and a sealing ridge, and the sealing ridge is arranged in a ring around the connecting block, and the upper end surface of the sealing ridge is lower than the upper end surface of the connecting block; the upper end of the rubber bag is open and forms a sealing opening; the core plate extends into the rubber bag from the sealing opening, and the edge of the sealing opening extends between the sealing ridge and the support member, and the core plate and the support member jointly press the edge of the sealing opening to achieve sealing of the sealing opening.

9. The forming module according to claim 8, characterized in that: The core plate is connected to the support member through a floating connector. The floating connector is connected to the support member in an up-and-down floating manner. The floating connector is fixedly connected to the core plate and floats up and down synchronously. The up-and-down floating distance of the floating connector relative to the support member is recorded as L, and the thickness of the core plate is recorded as S, where L=0.05S~0.1S.

10. The forming module according to claim 8, characterized in that: An oil delivery channel is provided in the support member, and an oil hole is provided on the core plate, and the oil hole is arranged to pass through the core plate up and down; the first end of the oil delivery channel is located at the end of the support member and is connected to the control channel, and the second end of the oil delivery channel is located on the lower side of the support member and is connected to the oil hole on the core plate.

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