Indexable water expansion forming hydraulic machine

Abstract

The utility model belongs to the technical field of hydraulic forming, and provides an indexable water expansion forming hydraulic machine which comprises a bottom plate, a top plate, a rotating disc, a mold, a driving mechanism and a high-pressure water pipe. Wherein the top plate and the bottom plate are arranged at intervals; the turntable is rotationally mounted on the bottom plate and is arranged between the top plate and the bottom plate; the dies comprise lower dies and upper dies which are arranged in pairs, the lower dies are connected to the rotating disc and are symmetrically arranged about the rotating center axis of the rotating disc, and the upper dies abut against the sides, away from the rotating disc, of the lower dies in the direction perpendicular to the rotating disc and are matched with the lower dies to form cavities used for forming target products; the driving mechanism comprises a lifting electric cylinder and a mold locking oil cylinder which are respectively connected to the top plate, and further comprises a pressure head which is connected to the mold locking oil cylinder and can be driven by the mold locking oil cylinder, and the lifting electric cylinder and the mold locking oil cylinder are also symmetrically arranged about the rotating central axis of the turntable; the high-pressure water pipe communicates with the cavity and is used for pouring high-pressure water into the cavity.

Description

Technical Field

[0001] This application belongs to the field of hydraulic forming technology, and in particular relates to an indexable hydroforming hydraulic press. Background Technology

[0002] Traditional hydraulic hydraulic forming presses typically operate in a single-station mode, completing the entire process of material loading, hydraulic forming, finished product removal, and reloading at a fixed location. This operating method suffers from a significant efficiency bottleneck: the waiting time for material loading and unloading substantially reduces the overall forming efficiency of the equipment and limits the production line's capacity. Therefore, it is necessary to address these technical issues. Summary of the Invention

[0003] The purpose of this application is to provide an indexable hydroforming hydraulic press to solve the technical problem of low hydroforming efficiency in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide an indexable hydroforming hydraulic press, comprising:

[0005] Base plate;

[0006] A top plate is spaced apart from the bottom plate;

[0007] A turntable is rotatably mounted on the base plate and positioned between the top plate and the base plate;

[0008] A mold includes a lower mold and an upper mold arranged in pairs. The lower mold is connected to the turntable and is symmetrically arranged about the rotation center axis of the turntable. The upper mold abuts against the lower mold on the side away from the turntable in a direction perpendicular to the turntable and cooperates with the lower mold to form a cavity for molding a target product.

[0009] The driving mechanism includes a lifting electric cylinder and a mold-locking hydraulic cylinder respectively connected to the top plate, and a pressure head connected to the mold-locking hydraulic cylinder and capable of being driven by the mold-locking hydraulic cylinder. The power end of the lifting electric cylinder is detachably connected to the upper mold and can drive the upper mold to move closer to or away from the lower mold in a direction perpendicular to the turntable. The movement path of the pressure head is perpendicular to the turntable and interferes with the rotation path of the upper mold. The lifting electric cylinder and the mold-locking hydraulic cylinder are also symmetrically arranged about the rotation center axis of the turntable.

[0010] A high-pressure water pipe is connected to the cavity and used to inject high-pressure water into the cavity.

[0011] Optionally, the drive mechanism further includes a lifting slider connected to the upper mold and a pulling seat connected to the power end of the lifting electric cylinder;

[0012] The lifting slider has a T-shaped groove extending along an arc path. The T-shaped groove extends in a plane parallel to the turntable and is coaxial with the turntable. All the T-shaped grooves on the lifting slider are located on the same circumferential path. The pull seat is connected to a T-shaped block that is adapted to the shape of the T-shaped groove and can pass through the T-shaped groove or stop in the T-shaped groove.

[0013] Optionally, the drive mechanism further includes a pressure plate detachably connected to the lifting slider and used to abut against the pressure head.

[0014] Optionally, the drive mechanism further includes a rotating bracket coaxially connected to the turntable;

[0015] A linear track is formed on the rotating bracket that is slidably connected to the lifting slider.

[0016] Optionally, the drive mechanism further includes a guide rod connected to the pull seat;

[0017] The guide rod passes through the top plate and is slidably connected to the top plate, and the extension direction of the linear guide is parallel to the sliding direction of the guide rod relative to the top plate.

[0018] Optionally, the drive mechanism further includes a plurality of columns connected between the base plate and the top plate;

[0019] The columns are perpendicular to the turntable and arranged in a triangle, and the rotating bracket is coaxially and movably mounted on one of the columns;

[0020] The other columns are located outside the maximum outline of the turntable.

[0021] Optionally, the drive mechanism further includes a mold-locking slider slidably connected to the column;

[0022] The pressure head is connected to the mold-locking slider and then connected to the mold-locking cylinder via the mold-locking slider.

[0023] Optionally, the indexable hydroforming hydraulic press further includes a support box for supporting the base plate and a pressure plate placed between the turntable and the base plate;

[0024] The turntable is provided with a moving interface that communicates with the cavity, and the pressure plate is provided with a stationary interface that communicates with the moving interface. The high-pressure water pipe is connected to the stationary interface.

[0025] Optionally, the indexable hydroforming hydraulic press further includes a sealing ring placed between the turntable and the pressure plate;

[0026] The stationary interface passes through the sealing ring.

[0027] Optionally, the indexable hydroforming hydraulic press further includes a rotary servo motor connected to the support housing and a gear connected to the power end of the rotary servo motor;

[0028] The gear and the teeth on the outer periphery of the turntable form a gear transmission pair so that the turntable can be driven by the rotary servo motor.

[0029] The beneficial effects of the indexable hydroforming hydraulic press provided in this application are as follows: Compared with the prior art, in the indexable hydroforming hydraulic press provided in this application, the lower molds symmetrically arranged around the rotation center axis of the turntable can interchange positions during the turntable's 180° rotation, and the upper molds abutting against the lower molds can also interchange positions accordingly. Since the lifting electric cylinder and the locking cylinder are also symmetrically arranged about the rotation center axis of the turntable, when one set of molds moves to the working position of the lifting electric cylinder, the other set of molds can move precisely to the working position of the locking cylinder. Thus, as the lifting electric cylinder moves one set of upper molds closer to or away from the lower mold, the locking cylinder can drive the pressure head to press the upper mold of the other set of molds against the lower mold, and high-pressure water is introduced to perform hydroforming on the target product within the set of molds. Therefore, the indexable hydroforming hydraulic press provided in this application can synchronize the raw material loading and finished product unloading processes with the product forming process, which can significantly improve the forming efficiency of hydroforming, far superior to the prior art. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a partial cross-sectional view of the indexable hydroforming hydraulic press in an embodiment of this application;

[0032] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0033] Figure 3 This is a partial structural cross-sectional view of the indexable hydroforming hydraulic press in the embodiments of this application;

[0034] Figure 4 This is a schematic diagram of the main structure of the indexable hydroforming hydraulic press in the embodiments of this application;

[0035] Figure 5 This is a top view of the indexable hydroforming hydraulic press in an embodiment of this application.

[0036] Figure 6 This is a partial enlarged view of an embodiment of this application.

[0037] The reference numerals in the figures are as follows: 101, base plate; 102, top plate; 103, turntable; 104, lower mold; 105, upper mold; 106, cavity; 107, lifting electric cylinder; 108, mold-locking hydraulic cylinder; 109, pressure head; 110, high-pressure water pipe; 111, pressure plate; 112, lifting slider; 113, pull seat; 114, T-slot; 115, T-block; 116, rotating bracket; 117, linear guide; 118, guide rod; 119, column; 120, mold-locking slider; 121, support box; 122, pressure plate; 123, moving interface; 124, stationary interface; 125, sealing ring; 126, rotary servo motor; 127, gear; 128, high-pressure water cylinder; 129, booster hydraulic cylinder; 130, cylindrical cavity; 131, cylindrical boss. Detailed Implementation

[0038] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0039] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0040] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] Please refer to the following: Figures 1 to 6The present application provides a description of a indexable hydroforming hydraulic press. This indexable hydroforming hydraulic press includes a base plate 101, a top plate 102, a turntable 103, a mold, a drive mechanism, and a high-pressure water pipe 110. Wherein:

[0043] The top plate 102 and the bottom plate 101 are spaced apart; the turntable 103 is rotatably mounted on the bottom plate 101 and positioned between the top plate 102 and the bottom plate 101; the mold includes a pair of lower molds 104 and upper molds 105, the lower mold 104 is connected to the turntable 103 and is symmetrically arranged about the rotation center axis of the turntable 103, the upper mold 105 abuts against the side of the lower mold 104 away from the turntable 103 in a direction perpendicular to the turntable 103 and cooperates with the lower mold 104 to form a cavity 106 for molding the target product; the driving mechanism includes a lifting electric cylinder 107 and a mold locking mechanism respectively connected to the top plate 102. The hydraulic cylinder 108 also includes a pressure head 109 connected to and driven by the clamping cylinder 108. The power end of the lifting electric cylinder 107 is detachably connected to the upper mold 105 and can drive the upper mold 105 to move closer to or away from the lower mold 104 in a direction perpendicular to the turntable 103. The movement path of the pressure head 109 is perpendicular to the turntable 103 and interferes with the rotation path of the upper mold 105. The lifting electric cylinder 107 and the clamping cylinder 108 are also symmetrically arranged about the rotation center axis of the turntable 103. The high-pressure water pipe 110 is connected to the cavity 106 and is used to inject high-pressure water into the cavity 106. In this embodiment, the high-pressure water pipe 110 realizes the water expansion molding operation of the target product by injecting high-pressure water into the blank to be expanded in the cavity 106. It is understood that the indexable water expansion forming hydraulic press provided in this embodiment should also include commonly used mechanisms for generating high-pressure water, such as high-pressure water cylinder 128 and booster cylinder 129, as well as water source mechanisms. The plunger of high-pressure water cylinder 128 is driven by booster cylinder 129, thereby pressurizing the water in high-pressure water cylinder 128. The resulting high-pressure water is supplied to the blank to be expanded in the cavity 106 through high-pressure water pipe 110 connected to the output port of high-pressure water cylinder 128. The cylinder diameter of booster cylinder 129 is usually much larger than the plunger diameter of high-pressure water cylinder 128, which will not be elaborated on here.

[0044] According to the structure provided in this embodiment, in the indexable hydroforming hydraulic press provided in this embodiment, the lower molds 104, which are symmetrically arranged around the rotation center axis of the turntable 103, can exchange positions with each other during the process of the turntable 103 rotating 180°, and the upper molds 105, which abut against the lower molds 104, can also exchange positions accordingly. Since the lifting electric cylinder 107 and the mold locking cylinder 108 are also symmetrically arranged about the rotation center axis of the turntable 103, when one set of molds moves to the working position of the lifting electric cylinder 107, the other set of molds can move to the working position of the mold locking cylinder 108. In this way, as the lifting cylinder 107 moves one of the upper molds 105 closer to or further away from the lower mold 104, the locking cylinder 108 can drive the pressure head 109 to press the upper mold 105 on the other set of molds onto the lower mold 104 to achieve mold locking. Then, high-pressure water is introduced to perform hydroforming on the target product within the set of molds. Here, the lifting cylinder 107 is a lifting cylinder powered by a servo motor to facilitate precise control of the position of the T-block 115. Therefore, the indexable hydroforming hydraulic press provided in this application can synchronize the raw material loading and finished product unloading processes with the product forming process, which can significantly improve the forming efficiency of hydroforming, far superior to the prior art.

[0045] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 6 The drive mechanism also includes a lifting slider 112 connected to the upper mold 105 and a pull seat 113 connected to the power end of the lifting electric cylinder 107; a T-shaped groove 114 extending along an arc path is formed on the lifting slider 112, the T-shaped groove 114 extends in a plane parallel to the turntable 103 and is coaxially arranged with the turntable 103, the T-shaped grooves 114 on all the lifting sliders 112 are located on the same circumferential path, and a T-shaped block 115 that is adapted to the shape of the T-shaped groove 114 and can pass through the T-shaped groove 114 or stop in the T-shaped groove 114 is connected to the pull seat 113. According to the structure provided in this embodiment, as the turntable 103 rotates, the T-shaped block 115 connected to the pull seat 113 can sequentially pass through the T-shaped grooves 114 formed by the lifting sliders 112 on different upper molds 105. When the T-shaped block 115 stops in the T-shaped groove 114, the lifting cylinder 107 can sequentially drive the upper mold 105 closer to or further away from the lower mold 104 via the pull seat 113, the T-shaped block 115, and the lifting slider 112. After the raw material is loaded, the rotation of the turntable 103 can quickly separate the T-shaped block 115 from the T-shaped groove 114, which helps to further improve the molding efficiency of the indexable hydroforming hydraulic press in this embodiment.

[0046] With the above settings, initially, the pull seat 113, driven by the lifting cylinder 107, moves the T-block 115 down to the set position. As the turntable 103 moves the upper mold 105 and lower mold 104 below the lifting cylinder 107, the T-block 115 gradually enters the T-groove 114. When the upper mold 105 and lower mold 104 reach directly below the lifting cylinder 107, the turntable 103 stops. Driven by the lifting cylinder 107, the pull seat 113 moves the T-block 115 up, causing the upper mold 105 to move away from the lower mold 104, thus opening the mold. At this time, the target product can be taken out from the lower mold 104, or the blank to be hydro-expanded can be placed into the lower mold. Within 104, after completion, the lifting electric cylinder 107 drives the pull-down seat 113 to move the T-shaped block 115 down, causing the upper mold 105 to approach the lower mold 104 to achieve mold closing. The T-shaped block 115 remains in the current position. Then, the turntable 103 drives the upper mold 105 and lower mold 104, which are loaded with blanks to be water-expanded, to rotate to below the mold locking cylinder 108. During this process, the current T-shaped groove 114 gradually leaves the area of ​​the T-shaped block 115. Simultaneously, another set of upper molds 105 and lower molds 104 that have completed water expansion arrive below the lifting electric cylinder 107 and the T-shaped block 115 enters the T-shaped groove 114. This cycle repeats, automatically switching workstations and realizing mold opening and closing.

[0047] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 6 The drive mechanism also includes a pressure plate 111 detachably connected to the lifting slider 112 and used to abut against the pressure head 109. Specifically, the pressure plate 111 has two plates mounted on the upper end of the lifting slider 112 and located on both sides of the T-slot 114. The interval between the two pressure plates 111 is consistent with the extension path of the T-slot 114, allowing the connection between the T-block 115 and the pull seat 113 to pass through. According to the structure provided in this embodiment, on the one hand, the pressure plate 111 connected to the upper mold 105 can effectively prevent the pressure head 109 from pressing down and locking the mold, thus ensuring that the T-block 115 can smoothly enter and exit the T-slot 114. On the other hand, the detachable connection between the lifting slider 112 and the pressure plate 111 makes it easy to replace the pressure plate 111 after it has been subjected to a lot of wear. This is beneficial for the indexable hydroforming hydraulic press provided in this embodiment to be used stably for a longer period of time.

[0048] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 6The drive mechanism also includes a rotating bracket 116 coaxially connected to the turntable 103; a linear guide 117 is formed on the rotating bracket 116 and slidably connected to the lifting slider 112. According to the structure provided in this embodiment, the linear guide 117 formed on the rotating bracket 116 can ensure that the lifting slider 112 moves more quickly and stably, so as to ensure the positional stability of the upper mold 105 when it moves up and down. This is beneficial to further improve the molding efficiency of the indexable hydroforming hydraulic press in this embodiment. At the same time, since the rotating bracket 116 is located between the working position of the lifting electric cylinder 107 and the working position of the mold locking cylinder 108, the rotating bracket 116 can effectively block accidents such as high-pressure water leakage, product or mold bursting during the hydroforming process, so as to protect the operator loading and unloading products at the working position of the lifting electric cylinder 107, significantly enhancing safety.

[0049] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 6 The drive mechanism also includes a guide rod 118 connected to the pull seat 113; the guide rod 118 passes through the top plate 102 and is slidably connected to the top plate 102, and the extension direction of the linear guide 117 is parallel to the sliding direction of the guide rod 118 relative to the top plate 102. According to the structure provided in this embodiment, the guide rod 118 slidably connected to the top plate 102 can make the pull seat 113 move more quickly and stably, which is beneficial to further improve the molding efficiency of the indexable hydroforming hydraulic press in this embodiment.

[0050] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 6 The drive mechanism also includes several columns 119 connected between the base plate 101 and the top plate 102. The columns 119 are perpendicular to the turntable 103 and arranged in a triangular pattern. A rotating bracket 116 is coaxially mounted on one of the columns 119. It can be understood that the column 119 also coaxially passes through the turntable 103. Here, the rotating bracket 116 and the columns 119 are usually equipped with sliding bearings to provide smooth rotational support for the rotating bracket 116 as it rotates with the turntable 103. The other columns 119 are located outside the maximum contour of the turntable 103. According to the structure provided in this embodiment, the three columns 119 arranged in a triangular pattern can utilize the stability of the triangle to maintain a stable interval between the top plate 102 and the base plate 101, and allow the turntable 103 to rotate smoothly. This is beneficial for the indexable hydroforming hydraulic press provided in this embodiment to be used stably for a longer period of time.

[0051] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 6The drive mechanism also includes a mold-locking slider 120 slidably connected to the column 119; the pressure head 109 is connected to the mold-locking slider 120 and connected to the mold-locking cylinder 108 through the mold-locking slider 120. According to the structure provided in this embodiment, the mold-locking slider 120 slidably connected to the column 119 can make the pressure head 109 connected to the mold-locking slider 120 move more quickly and stably, which is beneficial to further improve the molding efficiency of the indexable hydro-expansion molding hydraulic press in this embodiment.

[0052] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 6 The indexable hydroforming hydraulic press also includes a support housing 121 for supporting the base plate 101 and a pressure plate 122 placed between the turntable 103 and the base plate 101. The turntable 103 has a moving interface 123 communicating with the cavity 106, and the pressure plate 122 has a stationary interface 124 communicating with the moving interface 123. A high-pressure water pipe 110 communicates with the stationary interface 124. According to the structure provided in this embodiment, the support housing 121 and the pressure plate 122 can significantly improve the load-bearing capacity of the turntable 103, which is beneficial for enabling the indexable hydroforming hydraulic press provided in this embodiment to be used stably for a longer period of time. As a further preferred embodiment, in this embodiment, a recessed cylindrical cavity 130 is formed on one end of the pressure plate 122 facing the turntable 103, and a cylindrical boss 131 extending into the cylindrical cavity 130 is formed on the corresponding turntable 103, wherein the outer wall of the cylindrical boss 131 slides in fit with the inner wall of the cylindrical cavity 130; here, the axis of the cylindrical cavity 130, the axis of the cylindrical boss 131, the rotation axis of the rotating bracket 116, and the axis of the turntable 103 are coaxial, so that the turntable 103 can be precisely rotated and guided, and the smooth rotation of the lower mold 104 and the upper mold 105 can be achieved through the cooperation of the rotating bracket 116.

[0053] In addition, during the rotation of the turntable 103, when the stationary interface 124 and the moving interface 123 are connected, the high-pressure water in the high-pressure water pipe 110 can be injected into the blank to be expanded in the cavity 106. That is, when the turntable 103 drives the lower mold 104 and the upper mold 105, which are loaded with the blank to be expanded, to rotate below the pressure head 109, the stationary interface 124 and the moving interface 123 are also aligned and connected. After the pressure head 109 descends and completes the mold locking, the high-pressure water in the high-pressure water pipe 110 can be injected into the blank to be expanded in the cavity 106 to complete the water expansion molding of the target product. This is beneficial to further improve the molding efficiency of the indexable water expansion molding hydraulic press in this embodiment.

[0054] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 6The indexable hydroforming hydraulic press also includes a sealing ring 125 placed between the turntable 103 and the pressure plate 122; the stationary interface 124 passes through the sealing ring 125. In a further preferred embodiment, a circular groove is formed on the surface of the pressure plate 122 facing the turntable 103 for mounting the sealing ring 125. This groove is concentric with the opening of the stationary interface 124 on the upper surface of the pressure plate 122. According to the structure provided in this embodiment, the fixed-position sealing ring 125 can ensure the sealing performance between the moving interface 123 and the stationary interface 124, which is beneficial to further improve the forming efficiency of the indexable hydroforming hydraulic press in this embodiment.

[0055] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 6 The indexable hydroforming hydraulic press also includes a rotary servo motor 126 connected to the support housing 121 and a gear 127 connected to the power end of the rotary servo motor 126. The gear 127 and the teeth on the outer periphery of the turntable 103 form a gear transmission pair so that the turntable 103 can be driven by the rotary servo motor 126. According to the structure provided in this embodiment, the rotary servo motor 126 and the gear 127 that cooperate with the turntable 103 to form a gear transmission pair can make the turntable 103 rotate faster and more accurately. This allows the upper mold 105 to correspond to the lifting electric cylinder 107 and the mold locking cylinder 108 more quickly, which is beneficial to further improve the forming efficiency of the indexable hydroforming hydraulic press in this embodiment.

[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A swivelable hydroexpanding hydraulic press, characterized by, The invention relates to a rotatable water expansion forming hydraulic press, comprising: a bottom plate (101); a top plate (102) arranged in a spaced manner with the bottom plate (101); a rotating disc (103) rotatably mounted on the bottom plate (101) and arranged between the top plate (102) and the bottom plate (101); a mold comprising a lower mold (104) and an upper mold (105) arranged in pairs, the lower mold (104) being connected to the rotating disc (103) and arranged symmetrically about the center axis of rotation of the rotating disc (103), the upper mold (105) abutting the lower mold (104) on a side away from the rotating disc (103) in a direction perpendicular to the rotating disc (103) and cooperating with the lower mold (104) to form a cavity (106) for forming a target product; a driving mechanism comprising a lifting cylinder (107) and a locking cylinder (108) connected to the top plate (102) respectively, and further comprising a pressure head (109) connected to the locking cylinder (108) and capable of being driven by the locking cylinder (108), the power end of the lifting cylinder (107) being detachably connected to the upper mold (105) and capable of driving the upper mold (105) to move closer to or away from the lower mold (104) in a direction perpendicular to the rotating disc (103), the moving path of the pressure head (109) being perpendicular to the rotating disc (103) and interfering with the rotating path of the upper mold (105), the lifting cylinder (107) and the locking cylinder (108) also being arranged symmetrically about the center axis of rotation of the rotating disc (103); a high-pressure water pipe (110) connected to the cavity (106) and used for injecting high-pressure water into the cavity (106).

2. The rotatable water expansion forming hydraulic press according to claim 1, wherein: the driving mechanism further comprises a lifting slider (112) connected to the upper mold (105) and a pulling seat (113) connected to the power end of the lifting cylinder (107); a T-shaped slot (114) extending along an arc-shaped path is formed on the lifting slider (112), the T-shaped slot (114) extending in a plane parallel to the rotating disc (103) and being coaxially arranged with the rotating disc (103), the T-shaped slots (114) on all the lifting sliders (112) being located on the same circumferential path, and a T-shaped block (115) is connected to the pulling seat (113) and is adapted to the shape of the T-shaped slot (114) and capable of being arranged in the T-shaped slot (114).

3. The rotatable water expansion forming hydraulic press according to claim 2, wherein: the driving mechanism further comprises a pressing plate (111) detachably connected to the lifting slider (112) and used for abutting the pressure head (109).

4. The rotatable water expansion forming hydraulic press according to claim 3, wherein: the driving mechanism further comprises a rotating support (116) coaxially connected to the rotating disc (103); a wire rail (117) slidably connected to the lifting slider (112) is formed on the rotating support (116).

5. The indexable hydroforming hydraulic press of claim 4, wherein: the driving mechanism further comprises a guide rod (118) connected to the pulling seat (113); the guide rod (118) penetrates through the top plate (102) and is in sliding connection with the top plate (102), and the extension direction of the linear rail (117) is parallel to the sliding direction of the guide rod (118) relative to the top plate (102).

6. The indexable hydroforming hydraulic press of claim 4, wherein: the driving mechanism further comprises a plurality of vertical columns (119) connected between the bottom plate (101) and the top plate (102); the vertical columns (119) are perpendicular to the rotating disc (103) and are distributed in a triangular shape, and the rotating bracket (116) is coaxially movably sleeved on one of the vertical columns (119); the other vertical columns (119) are located outside the maximum profile of the rotating disc (103).

7. The indexable hydroforming hydraulic press of claim 6, wherein: the driving mechanism further comprises a locking slide (120) in sliding connection with the vertical column (119); the pressure head (109) is connected to the locking slide (120) and is connected to the locking cylinder (108) through the locking slide (120).

8. The indexable hydroforming hydraulic press of claim 1, wherein: the indexable hydroforming hydraulic press further comprises a supporting box (121) for supporting the bottom plate (101), and a pressure bearing plate (122) interposed between the rotating disc (103) and the bottom plate (101); the rotating disc (103) is provided with a dynamic interface (123) in communication with the cavity (106), and the pressure bearing plate (122) is provided with a static interface (124) for communication with the dynamic interface (123), and the high-pressure water pipe (110) is in communication with the static interface (124).

9. The indexable hydroforming hydraulic press of claim 8, wherein: the indexable hydroforming hydraulic press further comprises a sealing ring (125) interposed between the rotating disc (103) and the pressure bearing plate (122); the static interface (124) penetrates through the sealing ring (125).

10. The indexable hydroforming hydraulic press of claim 8, wherein: the indexable hydroforming hydraulic press further comprises a rotating servo motor (126) connected to the supporting box (121), and a gear (127) connected to the power end of the rotating servo motor (126); the gear (127) and the gear teeth on the outer periphery of the rotating disc (103) form a gear transmission pair so that the rotating disc (103) can be driven by the rotating servo motor (126).

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