Hydraulic machine with mold device and pressing method of hydraulic machine

Abstract

The invention relates to the technical field of hydraulic machines, in particular to a hydraulic machine with a mold device and a pressing method thereof. Comprising a hydraulic machine body, an upper cross beam and a lower cross beam are arranged at the upper end and the lower end of the hydraulic machine body respectively, a sliding block assembly sliding up and down is arranged in the hydraulic machine body, and a driving assembly is arranged in the upper cross beam in a penetrating mode to drive a sliding block to move up and down; mold devices for containing carbon fiber hub mold plates are installed at the up-down corresponding positions of the moving assembly and the sliding block assembly, each mold device comprises an upper mold, a middle mold and a lower mold, the upper mold is arranged on the periphery of the middle mold, the lower mold comprises a mounting plate, a base and a pressing bottom plate which are sequentially arranged, and a plurality of side shaping blocks are slidably arranged on the pressing bottom plate; the multiple side shaping blocks are gathered towards the central axis of the lower die and define a middle die movement space, and a hub forming cavity is formed between the middle die and the multiple side shaping blocks. By applying the device, the pressing precision of the hub is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic presses, and in particular to a hydraulic press with a mold device and a pressing method thereof. Background Art

[0002] At present, the method of forming carbon fiber hubs is to use conical surfaces to match the upper mold and the side molding blocks. The upper mold is pressed downward to control the side molding blocks to slide inward to shape the side of the hub. At the same time, the top and side surfaces of the carbon fiber hub template are pressed at the same time. This method requires very high mold matching accuracy, and it is difficult to ensure that the molding forces of the side and top surfaces meet the requirements at the same time.

[0003] To this end, the present invention proposes a hydraulic press with a mold device and a pressing method thereof, which adopts a pressing method in which side shaping and top shaping are controlled separately to ensure that the forming forces of the top and side surfaces meet the requirements at the same time. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a hydraulic press with a mold device and a pressing method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A hydraulic press with a mold device, comprising a hydraulic press body, an upper crossbeam, and a lower crossbeam, wherein a slider assembly that slides up and down is arranged inside the hydraulic press body; A driving assembly is provided inside the upper cross beam, and the driving assembly drives the slider assembly to move up and down; A moving component is slidably arranged on the lower cross beam; A mold device for holding a carbon fiber wheel hub template is installed at corresponding upper and lower positions of the moving assembly and the sliding block assembly; The driving assembly includes a central cylinder and side cylinders respectively arranged on both sides of the central cylinder; The slider assembly comprises a slider, a central slider is slidably arranged inside the slider, an upper plane of the central slider is connected to the output shaft of the central cylinder, and an upper plane of the slider is connected to the output shafts of the two side cylinders.

[0006] Furthermore, the mold device comprises an upper mold, a middle mold and a lower mold, the upper mold is arranged outside the middle mold, the lower mold comprises a mounting plate, a base and a pressing bottom plate arranged in sequence, a plurality of side shaping blocks are slidably arranged on the pressing bottom plate, the plurality of side shaping blocks gather toward the central axis and enclose to form a middle mold movement space, and a hub molding cavity is formed between the middle mold and the plurality of side shaping blocks. The mold device is installed at corresponding upper and lower positions of the moving assembly and the slider assembly.

[0007] Furthermore, the slider assembly includes a slider, a center slider is slidably arranged inside the slider, the upper plane of the center slider is connected to the output shaft of the center cylinder, the upper plane of the slider is connected to the output shafts of the two side cylinders, the lower plane of the slider is fixedly connected to the top surface of the upper mold, and the lower plane of the center slider is fixedly connected to the top surface of the middle mold.

[0008] Furthermore, the mounting plate is installed on the movable component table, a groove is provided on the base, the pressing base plate is installed in the groove, an annular molding lower ring groove is provided at the center of the pressing base plate, and a plurality of side forming blocks are fixedly connected to the outer sides of the bottoms thereof with pushing blocks, and the pushing blocks are connected to a mold cylinder.

[0009] Furthermore, the outer side of the lower molding ring groove corresponds to the lower end surrounded by the plurality of side shaping blocks.

[0010] Furthermore, the cross section of the middle mold is T-shaped, including a horizontal portion and a vertical portion, the diameter of the vertical portion of the middle mold is slightly smaller than the inner diameter of the lower molding ring groove, and the lower plane of the horizontal portion of the middle mold abuts against the top of the side forming block.

[0011] Furthermore, a forming upper ring groove is provided on the vertical portion of the lower plane ring of the horizontal portion of the middle mold, and the outer side of the forming upper ring groove corresponds to the upper end surrounded by the plurality of side shaping blocks.

[0012] Furthermore, the hub molding cavity is shaped like the outer shape of the hub to be pressed, and the inner surface of the upper mold is provided with a limiting groove corresponding to the side molding block.

[0013] Furthermore, a pressing method includes the carbon fiber wheel hub molding hydraulic press and the mold device described above, the carbon fiber wheel hub to be pressed is installed in the lower mold, and the moving assembly brings the lower mold into the hydraulic press and corresponds to the upper mold, characterized in that it also includes the following steps: S1, the mold cylinder pushes the side shaping block so that the side shaping block is close to the side surface of the carbon fiber hub to be pressed; S2, the driving assembly drives the slider to perform pressing, the side cylinder drives the slider, the center cylinder drives the center slider, the slider and the center slider are synchronously fast-down and reach the fast-down set point respectively to perform pressing and pressure-maintaining; S3, after the pressure holding is completed, the side cylinder drives the slider to slowly demould to the demoulding end point setting point, and the center cylinder drives the center slider to slowly demould to the demoulding end point setting point; when the slider and the center slider reach their respective demoulding end point setting points, the side cylinder and the center cylinder return quickly at the same time; S4, the mold oil cylinder drives the side shaping block to perform side demoulding; S5. After demoulding is completed, the moving assembly carries the lower mold with the molded product and moves it out of the hydraulic press body to take out the molded product.

[0014] Furthermore, in said S2, it also includes: S21, the center slider drives the middle mold to press the top surface of the carbon fiber wheel hub; S22, after the middle mold is pressed into place, the center cylinder maintains pressure to form the top surface of the carbon fiber wheel hub; S23, the side cylinder drives the slider when the center cylinder maintains pressure, and the slider drives the upper mold to continue pressing downward. During the downward pressing process, the groove surface of the limiting groove in the upper mold is in inclined contact with the outside of the side shaping block; the downward pressure of the upper mold is converted into a force that gathers the side shaping block to the central axis. After the side cylinder is pressed into place, the pressure is maintained to form the side of the carbon fiber hub.

[0015] Compared with the prior art, the hydraulic press with a mold device and the pressing method thereof provided by the present invention have the following advantages: 1. Improve molding accuracy, product quality and strength. The wheel hub is pressed separately on the side and top to ensure the pressing and molding of the wheel hub. The requirements of the molding force on the top and side of the wheel hub are met. The hydraulic cylinder provides uniform pressure to ensure that the carbon fiber cloth is subjected to uniform pressure distribution during the molding process, preventing defects such as damage, wrinkling or bubbles in the carbon fiber cloth. 2. The hydraulic press uses a slider and a center slider to press the top and sides of the mold device respectively, ensuring the effect of separate pressing of the top and sides of the mold device; 3. High degree of automation, convenient for loading and unloading. The moving assembly carries the lower die in and out of the hydraulic press. After pressing and demoulding, the moving assembly can move the lower die out of the hydraulic press to unload the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a slider of the present invention; Figure 3 It is a schematic diagram of the structure of the mold device of the present invention; Figure 4 The lower mold structure of the present invention is shown in FIG. Figure 1 ; Figure 5 The lower mold structure of the present invention is shown in FIG. Figure 2 ; Figure 6 It is a schematic diagram of the mold structure of the present invention; Figure 7 It is a schematic diagram of the upper mold structure of the present invention; Figure 8 It is a schematic diagram of the working process of the present invention; In the figure: 1, hydraulic press body, 11, upper crossbeam, 12, slider, 121, center slider, 13, lower crossbeam, 2. Drive assembly, 21. Center cylinder, 22. Side cylinder, 3. mold device, 31. upper mold, 31a. limiting groove, 32, middle die, 32a, forming upper ring groove, 33, lower die, 34, wheel hub forming cavity, 331, mounting plate, 332, base, 333, pressing bottom plate, 333a, forming lower ring groove, 334, side shaping block, 334a, forming arc groove, 335, pushing block, 336, mold cylinder, 4. Mobile components, 5. Electric control cabinet, 6. Operating table. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] Embodiment 1, as Figure 1-Figure 2 As shown, a hydraulic press with a mold device is mainly used for carbon fiber wheel hub molding, including a hydraulic press body 1, an upper crossbeam 11, and a lower crossbeam 13. A slider assembly that slides up and down is arranged inside the hydraulic press body 4; A driving assembly 2 is provided inside the upper cross beam 11, and the driving assembly 2 drives the slider assembly to move up and down; A moving component 4 is slidably arranged on the lower cross beam 13; The movable assembly 4 and the slider assembly are provided with a mold device 3 for holding a carbon fiber wheel hub template at corresponding positions above and below the movable assembly 4; The driving assembly 2 includes a central cylinder 21 and side cylinders 22 respectively arranged on both sides of the central cylinder 21; The slider assembly includes a slider 12 , a center slider 121 is slidably disposed inside the slider 12 , an upper plane of the center slider 121 is connected to the output shaft of the center cylinder 21 , and an upper plane of the slider 12 is connected to the output shafts of the two side cylinders 22 .

[0020] The central cylinder 21 and the side cylinders 22 on both sides are fixed inside the upper cross beam 1 by fixing flanges respectively. Guide slide blocks are installed on both sides of the slide block 12 to slide up and down on the hydraulic press body 1, and the central slide block 12 is suspended and fixed by the central cylinder 21.

[0021] During pressing, the hydraulic press control system controls the extension and retraction of the output shafts of the central cylinder 21 and the side cylinders 22 respectively, and the central cylinder 21 and the side cylinders 22 respectively drive the central slider 121 and the slider 12 to move up and down.

[0022] An electric control cabinet 5 and an operating table 6 are arranged outside the hydraulic press body 1 to facilitate operation of the hydraulic press.

[0023] In this embodiment, the lower part of the hydraulic press body 1 is installed in the foundation, and the moving assembly 4 includes a moving worktable, a worktable clamping device and a slide rail. The moving worktable moves back and forth outside the hydraulic press body 1 and on the lower crossbeam 13 through the slide rail, and the moving worktable is driven by a servo motor. The slide rail is installed on the lower crossbeam 13 and the foundation plane, which can ensure that the moving worktable moves back and forth outside the hydraulic press body 1 and inside the hydraulic press body 1. When the moving worktable moves along the slide rail to the inside of the hydraulic press body 1, the worktable clamping device in the moving assembly 4 clamps the worktable, and the work can be carried out. The specific worktable clamping device is implemented as follows: a through groove is provided at the lower part of the moving worktable at a position corresponding to the slide rail, and bosses are provided on both sides of the through groove, and grippers are provided on the bosses on both sides. The lower end of the gripper is connected to the output end of the tensioning oil cylinder. When the output end of the tensioning oil cylinder moves downward, the gripper can be driven to move downward, thereby pressing the boss, and finally pressing the moving worktable.

[0024] When the mobile workbench moves out, a travel switch is arranged on the slide rail, and the mobile workbench decelerates after hitting the travel switch until it hits the workbench limit block arranged at the end of the slide rail, and the mobile workbench stops moving. Similarly, when the mobile workbench moves into the hydraulic press body 1, the same travel switch and workbench limit block are also arranged on the slide rail inside the hydraulic press body 1 to limit the moving-in position of the mobile workbench.

[0025] A travel switch is arranged inside the cross beam 11 on the hydraulic press. After the formed wheel hub is pressed, the center cylinder 21 and the side cylinder 22 drive the slider 12 and the center slider 121 to hit the travel switch during the rapid return stroke. The travel switch sends a signal to the control system. After the control system receives the signal that the slider 12 and the center slider 121 have returned to their positions, the control system controls the slider 12 and the center slider 121 to stop moving.

[0026] Continue to see Figure 2-Figure 5 , the mold device 3 includes an upper mold 31, a middle mold 32 and a lower mold 33; The upper mold 31 is arranged around the middle mold 32; The lower mold 33 includes a mounting plate 331, a base 332 and a pressing bottom plate 333 which are arranged in sequence. A plurality of side shaping blocks 334 are slidably arranged on the pressing bottom plate 333. The plurality of side shaping blocks 334 gather toward the central axis of the lower mold and enclose to form a movement space of the middle mold 32. A hub molding cavity 34 is formed between the middle mold 32 and the plurality of side molding blocks 334 , and the hub molding cavity 34 is shaped like the outer shape of the hub to be pressed.

[0027] The top surface of the upper mold 31 is fixedly connected to the lower plane of the slider 12 , and the top surface of the middle mold 32 is fixedly connected to the lower plane of the center slider 121 .

[0028] The mold device 3 is installed at corresponding upper and lower positions of the moving component 4 and the slider component.

[0029] During pressing, the central cylinder 21 pushes the central slider 121 , the two side cylinders 22 push the slider 12 , the central slider 121 drives the middle die 32 , and the slider 12 drives the upper die 31 to jointly press the mold device 3 .

[0030] Embodiment 3, as Figure 3 and Figure 4 As shown, the mounting plate 331 is installed on the surface of the mobile workbench, a groove is provided on the base 332, a pressing base plate 333 is installed in the groove, a ring-shaped lower molding groove 333a is provided at the center of the pressing base plate 333, the bottom diameter of the space enclosed by a plurality of side forming blocks 334 is equal to the outer diameter of the lower molding groove 333a, a pushing block 335 is fixedly connected to the outer side of the bottom of the plurality of side forming blocks 334, and the pushing block 335 is connected to the mold cylinder 336.

[0031] The outer side of the lower molding ring groove 333a corresponds to the lower end surrounded by the plurality of side molding blocks 334 .

[0032] like Figure 3 As shown, the centers of the upper mold 31, the middle mold 32 and the lower mold 33 are on the same axis.

[0033] In this embodiment, if Figure 4 and Figure 5As shown, the groove on the base 332 is in a "cross" shape, and there are four side forming blocks 334, each of which is distributed on the "cross" branch in the groove, and is pushed by the pushing block 335, and the pushing block 335 is pushed by the mold cylinder 336. The four side forming blocks 334 are surrounded to form a lower mold cavity, and the upper and lower ends of the inner side surfaces of the side forming blocks 334 are provided with inwardly concave forming arc grooves 334a with the same structure. The forming arc grooves 334a in the four side forming blocks 334 match the shape of the wheel hub to be pressed, and the forming arc grooves 334a at the lower ends of the four side forming blocks 334 correspond to the outer arc surfaces of the forming lower ring grooves 333a.

[0034] The side shaping block 334 is a quarter-circular arc body, and axial assembly grooves are arranged on both sides of the outer arc surface of the side shaping block 334.

[0035] Embodiment 4, as Figure 3 and Figure 6 As shown, the cross-section of the middle mold 32 is T-shaped, including a horizontal portion and a vertical portion. The diameter of the vertical portion of the middle mold 32 is slightly smaller than the inner diameter of the molding lower ring groove 333a, and the lower plane of the horizontal portion of the middle mold 32 abuts against the top of the side shaping block 334.

[0036] In this embodiment, the lower plane of the horizontal part of the middle mold 32 is provided with a molding upper ring groove 32a around the top of the vertical part, and the molding upper ring groove 32a corresponds to the upper end of the plurality of side shaping blocks 334. The horizontal part of the middle mold 32 is a chamfered cube, and the vertical part of the middle mold 32 is a cylinder.

[0037] In Example 5, the entire inner cavity of the hub molding cavity 34 is shaped like the outer shape of the hub to be pressed, and the inner side surface of the upper mold 31 is provided with a limiting groove 31 a corresponding to the side shaping block 334 .

[0038] In this embodiment, if Figure 3 and Figure 7 As shown, a through groove is passed through the middle of the upper mold 31 for the movement of the middle mold 32 and the lower mold 33. When the molds are closed, a part of the top surface of the side shaping block 334 in the lower mold 33 is pressed against the limiting groove 31a, and the other part is pressed against the lower plane of the horizontal part of the middle mold 32. The shape of the limiting groove 31a is similar to the external shape of the side shaping block 334.

[0039] Embodiment 6, as Figure 8 As shown, a pressing method of a hydraulic press with a mold device as described above, firstly, a hub template of a carbon fiber woven fabric impregnated with resin is placed into a lower mold 33, and heated on a heating device to 135-145° C., and then the lower mold 33 is placed in a moving component 4, and the moving component 4 drives the lower mold 33 to the inside of the hydraulic press body 1 and corresponds to the upper mold 31 and the middle mold 32, and also includes the following steps: S1, the mold cylinder 336 pushes the push block 335, and the push block 335 pushes the side shaping block 334, so that the side shaping block 334 is closely attached to the side surface of the carbon fiber hub to be pressed; S2, the driving assembly 2 drives the slider 12 to press, the side cylinder 22 drives the slider 12, the center cylinder 21 drives the center slider 121, the slider 12 and the center slider 121 are synchronously fast down, and reach their respective fast down set points, and the slider 12 and the center slider 121 are pressed and pressure maintained; S3, after the pressure holding is completed, the side cylinder 22 drives the slider 12 to slowly demold to the demolding end point setting point, and the center cylinder 21 drives the center slider 121 to slowly demold to the demolding end point setting point; when the slider 12 and the center slider 121 reach their respective demolding set points, the side cylinder 22 and the center cylinder 21 return quickly at the same time; S4, the mold oil cylinder 336 drives the side shaping block 334 to perform side demoulding; S5. After demoulding is completed, the moving assembly 4 carries the lower mold 33 with the molded product and moves it out of the hydraulic press body 1 to take out the molded product.

[0040] In S2, it also includes: S21, the central slider 121 drives the middle mold 32 to press the top surface of the carbon fiber wheel hub; S22, after the middle mold 32 is pressed into place, the center cylinder 21 maintains pressure to form the top surface of the carbon fiber wheel hub; S23, the side cylinder 22 drives the slider 12 while the central cylinder 21 is maintaining pressure, and the slider 12 drives the upper mold 31 to continue pressing downward. During the downward pressing process, the groove surface of the limiting groove 31a in the upper mold 31 is in inclined contact with the outer surface of the side shaping block 334; the downward pressure of the upper mold 31 is converted into a force that gathers the side shaping block 334 toward the central axis. After the side cylinder (22) is pressed into place, the pressure is maintained to form the side surface of the carbon fiber wheel hub.

[0041] Working principle: First, heat the hub template of the carbon fiber woven fabric impregnated with resin to 135-145℃ through a heating device, and then put it into the lower mold 33. Then, move the lower mold 33 to the hydraulic press body 1 through the moving component 4, and correspond to the upper mold 31 and the middle mold 32. Then, drive the slider 12 through the driving component 2 to press. The center slider 121 drives the middle mold 32 to press the top surface of the carbon fiber hub. The pressing force is 3kg-7.5kg / cm 2, so that the top surface of the carbon fiber hub is pressed and formed. While the side cylinder 22 is maintaining pressure in the center cylinder 21, the side cylinder 22 continues to drive the slider 12, and the slider 12 drives the upper mold 31 to continue to press downward, prompting the downward pressure of the upper mold 31 to be converted into a force for the side shaping block 334 to gather toward the central axis, prompting the side of the carbon fiber hub to be pressed and formed. After the side cylinder 22 and the center cylinder 21 are pressed in place, the pressure is maintained for 2-4 hours. After the pressure is maintained, the demolding is completed, and the mobile component 4 moves the lower mold 33 out of the hydraulic press body 1, and finally the pressed product is taken out. In the process of loading and unloading, robots can be used to load and unload materials to reduce labor costs.

[0042] During pressing, the limiting groove 31a can limit the upward position of the side forming block 334. In this process, since the contact surface between the upper mold 31 and the side forming block 334 of the lower mold 33 is an inclined surface, the downward pressure of the upper mold 31 is converted into a force of the side forming block 334 toward the center of the wheel hub to be pressed, thereby pressing the side of the wheel hub and maintaining the pressure to form the side of the wheel hub.

[0043] The control system disposed in the electric control cabinet 5 controls the actions of the central cylinder 21, the side cylinder 22, the mold oil cylinder 336 and the moving assembly 4. The control system can be programmed by technicians in the relevant field to complete its actions.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic press with a mold device, comprising a hydraulic press body (1), an upper crossbeam (11), and a lower crossbeam (13), characterized in that: A sliding block assembly that slides up and down is arranged inside the hydraulic press body (1); A driving assembly (2) is provided inside the upper cross beam (11) and penetrates through the interior of the upper cross beam, and the driving assembly (2) drives the slider assembly to move up and down; A moving component (4) is slidably arranged on the lower cross beam (13); A mold device (3) for holding a carbon fiber wheel hub template is installed at corresponding upper and lower positions of the moving assembly (4) and the sliding block assembly.

2. A hydraulic press with a mold device according to claim 1, characterized in that: The driving assembly (2) comprises a central cylinder (21) and side cylinders (22) respectively arranged on both sides of the central cylinder (21); The slider assembly comprises a slider (12), a central slider (121) being slidably arranged inside the slider (12), an upper plane of the central slider (121) being connected to an output shaft of the central cylinder (21), and an upper plane of the slider (12) being connected to output shafts of two side cylinders (22).

3. A hydraulic press with a mold device according to claim 1, wherein the mold device comprises an upper mold (31), a middle mold (32) and a lower mold (33); characterized in that: The upper mold (31) is arranged on the periphery of the middle mold (32); The lower die (33) comprises a mounting plate (331), a base (332) and a pressing bottom plate (333) which are arranged in sequence, a plurality of side shaping blocks (334) being slidably arranged on the pressing bottom plate (333), and the plurality of side shaping blocks (334) are gathered towards the central axis of the lower die and enclosed to form a movement space of the middle die (32); A wheel hub molding cavity (34) is formed between the middle mold (32) and the plurality of side molding blocks (334), wherein the wheel hub molding cavity (34) is shaped like the outer shape of the wheel hub to be pressed; The top surface of the upper mold (31) is fixedly connected to the lower plane of the slider (12), and the top surface of the middle mold (32) is fixedly connected to the lower plane of the central slider (121); The mold device (3) is installed at corresponding upper and lower positions of the moving component (4) and the slider component.

4. A hydraulic press with a mold device according to claim 3, characterized in that: The mounting plate (331) is mounted on the table of the moving component (4); a groove is provided on the base (332); the pressing base plate (333) is mounted in the groove; an annular lower forming ring groove (333a) is provided at the center of the pressing base plate (333); a plurality of side shaping blocks (334) are fixedly connected to the outer sides of the bottoms thereof with push blocks (335); and the push blocks (335) are connected to a mold oil cylinder (336).

5. A hydraulic press with a mold device according to claim 4, characterized in that: The outer side of the lower molding ring groove (333a) corresponds to the lower end surrounded by the plurality of side shaping blocks (334).

6. A hydraulic press with a mold device according to claim 3, characterized in that: The middle mold (32) has a T-shaped cross section, comprising a horizontal portion and a vertical portion, the diameter of the vertical portion of the middle mold (32) being slightly smaller than the inner diameter of the lower molding annular groove (333a), and the lower plane of the horizontal portion of the middle mold (32) abuts against the top of the side shaping block (334).

7. A hydraulic press with a mold device according to claim 6, characterized in that: A forming upper ring groove (32a) is arranged on the lower plane of the horizontal part of the middle mold (32) around the top of the vertical part, and the outer side of the forming upper ring groove (32a) corresponds to the upper end surrounded by the plurality of side shaping blocks (334).

8. A hydraulic press with a mold device according to claim 3, characterized in that: The inner side surface of the upper mold (31) is provided with limiting grooves (31a) corresponding to the plurality of side shaping blocks (334).

9. A pressing method, comprising a hydraulic press with a mold device as claimed in any one of claims 1 to 8, wherein a carbon fiber hub template to be pressed is installed in a lower mold (33), and a moving component (4) brings the lower mold into the hydraulic press and corresponds to the upper mold (31), characterized in that: The following steps are also included: S1, the mold oil cylinder (336) pushes the pushing block (335), and the pushing block (335) then pushes the side shaping block (334), so that the side shaping block (334) is closely attached to the side surface of the carbon fiber hub to be pressed; S2, the driving assembly (2) drives the slider (12) to perform pressing, the side cylinder (22) drives the slider (12), and the center cylinder (21) drives the center slider (121), and the slider (12) and the center slider (121) move down synchronously and reach their respective fast-down set points to perform pressing and maintain pressure; S3, after the pressure holding is completed, the side cylinder (22) drives the slider (12) to slowly demould to the demoulding end point setting point, and the center cylinder (21) drives the center slider (121) to slowly demould to the demoulding end point setting point; when the slider (12) and the center slider (121) reach their respective demoulding end point setting points, the side cylinder (22) and the center cylinder (21) simultaneously return quickly; S4, the mold oil cylinder (336) drives the side shaping block (334) to perform side demoulding; S5. After demoulding is completed, the moving assembly (4) carries the lower mold (33) with the molded product and moves it outside the hydraulic press body (1), and then takes out the molded product.

10. A pressing method according to claim 9, characterized in that: In the S2, it also includes: S21, the central slider (121) drives the middle mold (32) to press the top surface of the carbon fiber wheel hub; S22, after the middle mold (32) is pressed into place, the central cylinder (21) maintains the pressure to form the top surface of the carbon fiber wheel hub; S23, the side cylinder (22) drives the slider (12) while the central cylinder (21) is maintaining pressure, and the slider (12) drives the upper mold (31) to continue pressing downward. During the downward pressing process, the groove surface of the limiting groove (31a) in the upper mold (31) is in inclined contact with the outer surface of the side shaping block (334); the downward pressure of the upper mold (31) is converted into a force that gathers the side shaping block (334) toward the central axis, and the side cylinder (22) maintains pressure after pressing in place, so that the side surface of the carbon fiber wheel hub is formed.

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