A hydraulic press for high pressure forming

Abstract

The present invention discloses an internal high pressure forming hydraulic press, which relates to the field of industrial production technology. This scheme significantly improves the performance of the internal high pressure forming technology. The synergistic effect of the positioning module, the top stroke seat and the reversing pressure holding component realizes highly precise control of the mold closing process. The positioning module ensures the accurate positioning of the main mold, the top stroke seat provides precise vertical pressure control, and the reversing pressure holding component dynamically adjusts the movement of the guide block to achieve the best fit between the main mold and the end sub-mold. This multi-level control mechanism significantly improves the mold sealing and workpiece molding quality, and enhances the equipment stability and operating efficiency. In addition, this scheme effectively reduces mold wear and mechanical stress concentration, extends the mold service life, and reduces production downtime through fine adjustment of the reversing pressure holding component and smooth sliding of the main mold. In terms of material feeding and discharging, the one-way pull rod design simplifies the mold lifting process, improves production efficiency, and avoids the problem of workpiece picking and placing.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial production, and in particular relates to an internal high pressure forming hydraulic press. Background Art

[0002] With the needs of some products, the demand for lightweight workpieces is high. For example, the corresponding parts of automobiles and airplanes are light in weight to ensure low energy consumption. During the processing of parts, the mold is clamped on the side of the substrate, and the two ends are sealed. High-pressure oil is introduced through the end sub-mold at both ends to make it expand and fit to the inner wall of the main mold under the internal high pressure, so that it fits the shape of the main mold under pressure for molding. In this method, liquid medium needs to be injected from both ends during the forming process, and the internal pressure and axial force are double-checked and loaded according to the pre-set loading curve, which requires perfect coordination of horizontal hydraulic pressure and vertical pressure;

[0003] Among them, in the existing internal high-pressure forming technology, the mold clamping accuracy and the stability of the reset process have always been important factors affecting the quality of workpiece molding. In the process of clamping, traditional internal high-pressure forming equipment is often difficult to accurately control the fitting state between the main mold and the end sub-mold, resulting in problems such as poor sealing and shape deviation after the workpiece is formed. In addition, during the reset process, mold jamming and mechanical stress concentration are also common, which can easily lead to mold wear, shortened life, and even equipment shutdown. In order to avoid these problems, the existing technology usually adopts the method of increasing the complexity of the hydraulic control system to improve the clamping accuracy and reset stability, but this often leads to an increase in equipment cost and increased maintenance difficulty. At the same time, in the process of workpiece feeding and unloading, the existing technology often faces the problems of limited operating space and inconvenient workpiece picking and placing, which not only increases the complexity of operation, but also may affect production efficiency.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] An internal high pressure forming hydraulic press, comprising:

[0007] Positioning module;

[0008] The inner wall of the positioning module is slidably provided with two main mold components, and the two main mold components are axially and horizontally arranged opposite to each other;

[0009] Bottom travel seat;

[0010] The bottom travel seat is arranged below the positioning module and is used to cooperate with the two main mold components in the positioning module to perform bottom sealing and lamination;

[0011] Top travel seat;

[0012] The top travel seat is arranged above the positioning module and is in the same vertical direction as the bottom travel seat;

[0013] Four columns;

[0014] Four columns penetrate the surface of the fixed positioning module, the bottom travel seat and the top travel seat penetrate and slide on the surface of the four columns, and the top ends of the four columns are commonly fixed with a tension frame;

[0015] Direction-changing pressing and holding assembly;

[0016] The direction-changing pressing and holding components are installed on both sides of the top stroke seat and are used for mold closing control of the two main mold components;

[0017] Control components;

[0018] The control assembly is fixedly connected to the bottom ends of the four columns and is used to control the mold clamping pressure and position of the bottom stroke seat.

[0019] Preferably, the positioning module includes a mold base fixed on the surface of four columns, the surface of the mold base is penetrated by a positioning groove for sliding of two main mold components, guide holes are symmetrically opened on both sides of the inner wall of the positioning groove, and the upper surface of the mold base is opened with a pressure hole connected to the guide hole.

[0020] Preferably, the top travel seat comprises a main hydraulic rod which passes through a load-bearing seat and is fixed on the surface of the tension frame, the bottom end of the main hydraulic rod is fixedly connected to a top molded seat, and a top mounting frame is provided on the lower surface of the top molded seat.

[0021] Preferably, the main mold assembly comprises a main mold mounting frame slidably arranged on the inner wall of the positioning groove, guide blocks are symmetrically fixed on both sides of the main mold mounting frame, the guide blocks are slidably arranged on the inner walls of the corresponding two guide holes, and the guide blocks are slidably arranged on the inner wall of the pressing hole;

[0022] The main mold is installed on the surface of the main mold mounting frame, and a support column is fixedly connected to the other side of the main mold mounting frame. The support column slides through one side of the mold base, and a spring for resetting the main mold is arranged on the surface of the support column.

[0023] Preferably, the direction-changing pressing assembly comprises a pressing frame fixedly connected to the upper surface of the top molding seat, the lower surface of the pressing frame is fitted with two main beams for sliding, both sides of the main beams are fixed with inclined pressure plates, the surface of the inclined pressure plates is fixed with two reinforcing guide pillars, and the two reinforcing guide pillars are slidably arranged on one side of the top molding seat;

[0024] A regulating hydraulic rod is fixedly passed through the surface of the pressing frame, one end of the regulating hydraulic rod is fixedly connected to the surface of the main beam, and an arc-shaped rib is fixedly connected to the upper surface of the pressing frame.

[0025] Preferably, the bottom stroke seat includes a bottom molded seat, the surface of the bottom molded seat is penetrated by a through hole, the inner wall of the through hole is slidably provided with a pressure control column, the surface of the pressure control column is fixedly connected with a one-way support seat, the one-way support seat is fixedly connected to the lower surface of the through hole, the top of the pressure control column is fixedly connected with a bottom mounting frame, the top mounting frame is installed on the upper surface of the bottom molded seat, the bottom end of the pressure control column is slidably provided with a pressure control cylinder, the pressure control cylinder is penetrated and fixed on the surface of the control component, and a clamp is fixed on the lower surface of the bottom molded seat.

[0026] Preferably, two one-way pull rods are provided to slide through the surfaces of the bottom molding seat and the top molding seat, and the one-way pull rods slide through the surfaces of the molding seats.

[0027] Preferably, the control assembly comprises a mounting seat, a plurality of combined force hydraulic rods are fixedly mounted on the surface of the mounting seat through a force bearing sleeve, a combined force plate is fixedly connected to the bottom ends of the combined force hydraulic rods, a plurality of retaining columns are fixedly mounted on the upper surface of the combined force plate, and the surfaces of the retaining columns penetrate and slide on the surface of the mounting seat;

[0028] The upper surface of the combined force plate is fixedly connected to the bottom end of the pressure control cylinder.

[0029] Preferably, the inclined pressure plate is slidably arranged on the inner wall of the pressure hole, and one side of the guide block is consistent with the inclined surface of the inclined pressure plate.

[0030] Preferably, end sub-moulds are installed on the surfaces of the top mounting frame and the bottom mounting frame, and the two end sub-moulds are sealed with the upper and lower sides of the two main moulds.

[0031] Beneficial effects:

[0032] This solution achieves highly precise control of the mold closing process through the coordinated cooperation of the positioning module, the top stroke seat and the direction-changing holding assembly. The positioning module provides a stable sliding guide for the main mold assembly to ensure the accurate position of the main mold during the mold closing process; the top stroke seat achieves precise docking between the top molding seat and the main mold through vertical pressure control; the direction-changing holding assembly dynamically adjusts the movement of the guide block by adjusting the lateral holding force, so that the main mold and the end sub-mold can achieve the best fit. This multi-level control mechanism not only significantly improves the sealing between molds and ensures excellent workpiece molding quality, but also improves the operating stability and efficiency of the equipment, providing a strong guarantee for the high-precision manufacturing of complex workpieces.

[0033] At the same time, during the mold closing and resetting process, the mold wear and mechanical stress concentration problems are effectively reduced through the fine adjustment of the variable direction holding component and the smooth sliding of the main mold. The variable direction holding component can flexibly adjust the spacing between the inclined pressure plate and the guide block according to different process requirements, thereby controlling the distribution of the mold closing pressure, so that the main mold is more evenly stressed during mold closing and resetting. This design not only extends the service life of the mold, but also reduces the maintenance cost of the equipment and reduces the production downtime caused by mold damage, thereby improving the overall reliability and economic benefits of the production line.

[0034] In the reset process after the internal high-pressure forming, this solution realizes the smooth reset of the main mold and the end sub-mold through the precise contraction of the main hydraulic rod and the coordinated action of the inclined pressure plate, avoiding damage to the workpiece during the reset process. The auxiliary reset design of the support column and spring enables the main mold to smoothly return to the initial position after the pressure is released, avoiding mold jamming or damage caused by improper reset. This mechanism not only ensures the stability of the reset process, but also improves production efficiency and reduces the risk of failure during the reset process, thereby further improving the overall reliability of the equipment.

[0035] This solution, through the design of the one-way tie rod, enables it to mechanically realize the highest control authority of the main hydraulic rod. After the main hydraulic rod is driven to extend, the control component can obtain the control authority of the mold closing position or height of the bottom stroke seat. When the main hydraulic rod is retracted and reset, regardless of whether the control component is reset, the height control authority of the bottom stroke seat will still be taken over by the main hydraulic rod, and the discharge control will be performed. More specifically, during the feeding and discharging process, the automatic lifting and lowering of the mold is realized through the cooperation of the cleverly designed one-way tie rod and the pressure control column, so as to smoothly complete the feeding and discharging operation of the workpiece. Under the action of gravity, the one-way tie rod drives the bottom mold pressing seat and the end sub-mold to move downward, so that the workpiece is separated from the main mold, exposing the workpiece, and facilitating the robot arm to grab it; after the discharge is completed, the combined force hydraulic rod drives the combined force plate to rise, driving the bottom mold pressing seat and the end sub-mold to reset to the mold closing position, preparing for the next molding. This design simplifies the feeding and discharging process, avoids the problem that the workpiece is difficult to remove due to limited operating space, and improves the automation level and production efficiency of the equipment.

[0036] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In the attached picture:

[0038] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0039] Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention in the front view direction;

[0040] Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention in a side view direction;

[0041] Figure 4 It is a schematic structural diagram of the explosion of the main mold assembly of the present invention;

[0042] Figure 5 It is a structural schematic diagram of the top travel seat and the direction-changing pressing and holding assembly of the present invention in cooperation with each other;

[0043] Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the bottom travel seat and the control assembly of the present invention;

[0044] Figure 7 It is a schematic diagram of the stress state of the direction-changing pressing and holding component of the present invention.

[0045] In the figure: 1. Positioning module; 11. Die base; 12. Positioning groove; 13. Guide hole; 14. Pressing hole; 2. Main die assembly; 21. Main die mounting frame; 22. Guide block; 23. Main die; 24. Support column; 3. Bottom travel seat; 31. Bottom die pressing seat; 32. Bottom mounting frame; 33. Perforation; 34. One-way support seat; 35. Pressure control column; 36. Pressure control cylinder; 37. Fixture; 4. Control assembly; 41. Mounting seat; 42. Combined force hydraulic rod; 43. Combined force plate; 44. Retaining column; 45. Force sleeve; 5. Top travel seat; 51. Main hydraulic rod; 52. Top molded seat; 53. Load-bearing seat; 54. Top mounting frame; 6. Direction-changing pressing assembly; 61. Main beam; 62. Inclined pressure plate; 63. Pressing frame; 64. Arc rib plate; 65. Adjusting hydraulic rod; 66. Strengthening guide column; 7. Tension frame; 8. Column; 9. End sub-mold; 10. One-way pull rod. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0047] like Figures 1 to 7 As shown, an internal high pressure forming hydraulic press comprises:

[0048] Two main mold components 2 are slidably disposed on the inner wall of the positioning mold assembly 1, and the two main mold components 2 are axially and horizontally disposed opposite to each other;

[0049] The bottom travel seat 3 is arranged below the positioning module 1 and is used to cooperate with the two main mold assemblies 2 in the positioning module 1 to perform bottom sealing and lamination;

[0050] The top travel seat 5 is disposed above the positioning module 1 and is in the same vertical direction as the bottom travel seat 3;

[0051] Four columns 8 penetrate the surface of the fixed positioning module 1, the bottom travel seat 3 and the bottom travel seat 3 penetrate and slide on the surface of the four columns 8, and the top ends of the four columns 8 are commonly fixed with a tension frame 7;

[0052] The direction-changing pressing and holding assembly 6 is installed on both sides of the top stroke seat 5 and is used for mold closing control of the two main mold assemblies 2;

[0053] The control assembly 4 is fixedly connected to the bottom ends of the four columns 8 and is used to control the mold clamping pressure and position of the bottom stroke seat 3 .

[0054] This solution achieves highly accurate control of the mold closing process through the coordinated work of the positioning module 1, the top stroke seat 5 and the reversing pressure holding component 6. This ensures the best fit between the main mold 23 and the end sub-mold 9, significantly improving the sealing between the molds and the molding quality of the workpiece. Accurate mold closing control and efficient feeding and unloading design improve the operating stability and efficiency of the equipment, reduce production problems caused by improper operation or inaccurate mold position, and thus improve the overall performance of the production line. By reducing mold wear and mechanical stress concentration, this solution effectively extends the service life of the mold and reduces maintenance costs. This not only reduces equipment downtime, but also reduces long-term production costs. The design of the one-way pull rod 10 automates the lifting and lowering of the mold and simplifies the feeding and unloading process of the workpiece. This solves the problem of difficult workpiece picking and placing in traditional equipment, improves production efficiency, and ensures ease of operation.

[0055] Specifically, Figure 3 As shown: the positioning module 1 includes a mold base 11 fixed on the surface of four columns 8, and a positioning groove 12 for sliding of two main mold assemblies 2 is opened through the surface of the mold base 11, and guide holes 13 are symmetrically opened on both sides of the inner wall of the positioning groove 12, and a pressure hole 14 connected to the guide hole 13 is opened on the upper surface of the mold base 11.

[0056] By setting the positioning module 1, the positioning module 1 as the position of the mold closing is unchanged, and it serves as the reference point of the hydraulic control force and the telescopic length of the mold closing process. At the same time, the guide hole 13 set on the surface of the mold base 11 can cooperate with the guide block 22 to ensure the stability of the horizontal displacement of the main mold assembly 2, and at the same time, the calibration and positioning of the mold closing can be maintained in the positioning groove 12.

[0057] Specifically, Figure 2 As shown: the top travel seat 5 includes a main hydraulic rod 51 that passes through a load-bearing seat 53 and is fixed on the surface of the tension frame 7. The bottom end of the main hydraulic rod 51 is fixedly connected to a top molded seat 52, and a top mounting frame 54 is provided on the lower surface of the top molded seat 52.

[0058] By setting the tension frame 7, the tension frame 7 is located at the top of the four columns 8 and serves as the top support of the main hydraulic rod 51 to ensure that it has sufficient supporting force.

[0059] Specifically, Figure 4 As shown: the main mold assembly 2 includes a main mold mounting frame 21 slidably arranged on the inner wall of the positioning groove 12, and guide blocks 22 are symmetrically fixed on both sides of the main mold mounting frame 21. The guide blocks 22 are slidably arranged on the inner walls of the corresponding two guide holes 13, and the guide blocks 22 are slidably arranged on the inner wall of the pressing hole 14;

[0060] A main mold 23 is installed on the surface of the main mold mounting frame 21, and a support column 24 is fixedly connected to the other side of the main mold mounting frame 21. The support column 24 slides through one side of the mold base 11, and a spring for resetting the main mold 23 is arranged on the surface of the support column 24.

[0061] By providing the spring and the support column 24 , the support column 24 can slide on the surface of the mold base 11 along with the movement of the main mold 23 , and the spring can provide a restoring elastic force to the main mold 23 after being compressed.

[0062] Specifically, Figure 5 As shown, the direction-changing pressing assembly 6 includes a pressing frame 63 fixedly connected to the upper surface of the top mold pressing seat 52, and the lower surface of the pressing frame 63 is fitted and slidably connected with two main beams 61, and both sides of the main beams 61 are fixed with inclined pressure plates 62, and the surface of the inclined pressure plates 62 is fixed with two reinforcing guide pillars 66, and the two reinforcing guide pillars 66 are slidably arranged on one side of the top mold pressing seat 52;

[0063] A regulating hydraulic rod 65 is fixedly passed through the surface of the pressing frame 63 , one end of the regulating hydraulic rod 65 is fixedly connected to the surface of the main beam 61 , and an arc-shaped rib plate 64 is fixedly connected to the upper surface of the pressing frame 63 .

[0064] When the direction-changing pressing component 6 moves downward, the inclined surface of the inclined pressure plate 62 contacts the surface of the guide block 22, so that the guide block 22 has two reaction forces F1 and F2 on the inclined pressure plate 62, wherein the force in the direction of F1 acts on the inclined pressure plate 62 so that the inclined pressure plate 62 has a rotational deflection force F3, and the further deflection force of F3 forms a force F4 that squeezes the pressing frame 63, so that the force F1 is constantly transformed to realize the consumption of the force, and at the same time, the pressing frame 63 supports the force F3, and the pressing frame 63 supports the inclined pressure plate 62 by adjusting the hydraulic rod 65. At this time, the arc-shaped rib plate 64 provides a supporting force K to the pressing frame 63, so that the force of the inclined pressure plate 62 can be stably supported, completing the force conversion of the pressure of the main hydraulic rod 51.

[0065] Specifically, Figure 6As shown: the bottom stroke seat 3 includes a bottom molded seat 31, the surface of the bottom molded seat 31 is penetrated with a through hole 33, the inner wall of the through hole 33 is slidably provided with a pressure control column 35, the surface of the pressure control column 35 is fixedly connected with a one-way support seat 34, the one-way support seat 34 is fixedly connected to the lower surface of the through hole 33, the top of the pressure control column 35 is fixedly connected with a bottom mounting frame 32, the top mounting frame 54 is installed on the upper surface of the bottom molded seat 31, the bottom end of the pressure control column 35 is slidably provided with a pressure control cylinder 36, the pressure control cylinder 36 is penetrated and fixed on the surface of the control component 4, and the lower surface of the bottom molded seat 31 is fixed with a clamp 37.

[0066] The pressure control column 35 can keep sliding on the inner wall of the pressure control cylinder 36, so that the pressure control cylinder 36 can only provide an upward pressure to the pressure control column 35 when sliding up and down, and the downward movement can only be downward with gravity.

[0067] Specifically, Figure 2 As shown: two one-way tie rods 10 are slidably penetrated through the surfaces of the bottom molding seat 31 and the top molding seat 52, and the one-way tie rods 10 are slidably penetrated through the surface of the molding seat 11.

[0068] The clamp 37 can keep the one-way pull rod 10 sliding on the inner wall, and when the one-way pull rod 10 slides to the end, the one-way pull rod 10 will not slip off through the limiting effect of the clamp 37, and the force on the bottom mold seat 31 will be maintained.

[0069] Specifically, Figure 6 As shown, the control assembly 4 includes a mounting seat 41, and a plurality of combined force hydraulic rods 42 are fixedly connected to the surface of the mounting seat 41 through a force sleeve 45, and a combined force plate 43 is fixedly connected to the bottom ends of the combined force hydraulic rods 42, and a plurality of retaining columns 44 are fixedly connected to the upper surface of the combined force plate 43, and the surface of the retaining columns 44 penetrates and slides on the surface of the mounting seat 41;

[0070] The upper surface of the force combining plate 43 is fixedly connected to the bottom end of the pressure control cylinder 36 .

[0071] By providing the combined force plate 43 , the combined force plate 43 can concentrate the force of the combined force hydraulic rod 42 , and cooperate with the retaining column 44 to ensure the stability of lifting.

[0072] Specifically, Figure 1 As shown, the inclined pressure plate 62 is slidably disposed on the inner wall of the pressure hole 14 , and one side of the guide block 22 is consistent with the inclined surface of the inclined pressure plate 62 .

[0073] The inclined surfaces of the inclined pressure plate 62 and the guide block 22 are consistent, which can ensure good fit and ensure the maximum fit surface when subjected to force.

[0074] Specifically, Figure 3 and Figure 5 As shown, the surfaces of the top mounting frame 54 and the bottom mounting frame 32 are both mounted with end sub-molds 9 , and the two end sub-molds 9 are sealed in cooperation with the upper and lower sides of the two main molds 23 .

[0075] By providing the top mounting frame 54 , the bottom mounting frame 32 and the main mold mounting frame 21 , the end sub-molds 9 and the main mold 23 of different specifications can be installed.

[0076] When the present solution is in use, the main hydraulic rod 51 is fixed to the surface of the tension frame 7, and the columns 8 fixed together at the four corners of the tension frame 7, the die base 11 of the positioning die set 1 and the mounting base 41 of the control assembly 4 maintain their pressure to support, and the top travel seat 5 and the bottom travel seat 3 sliding on the surface of the four columns 8 are respectively located in the area between the tension frame 7 and the die base 11 and the die base 11 and the control assembly 4 to slide;

[0077] When the main hydraulic rod 51 presses the top mold pressing seat 52 downward, the end sub-mold 9 installed by the top mounting frame 54 fixed on the lower surface of the top mold pressing seat 52 approaches the mold seat 11. In this process, the direction-changing pressing assembly 6 has two operation modes:

[0078] First, according to the pressure requirement of the two main molds 23, a support force is provided to the inclined pressure plate 62 through the holding frame 63 fixed on the upper surface of the top mold pressing seat 52, and the length of the regulating hydraulic rods 65 on both sides of the holding frame 63 is adjusted so that the main beam 61 is driven by it to move synchronously with the two reinforcing guide pillars 66 and the inclined pressure plate 62. The small change in the spacing between the two inclined pressure plates 62 directly affects the size of the holding force on the guide block 22 when the vertical driving distance of the main hydraulic rod 51 remains unchanged. At this time, the main hydraulic rod 51 passes through the top stroke seat 5 Bring the end sub-mold 9 located above to approach the two main molds 23, so that the inclined pressure plate 62 slides in the pressure hole 14 and presses the guide block 22 to slide horizontally on the inner wall of the guide hole 13, so that the two guide blocks 22 on the same side move toward each other, and the main molds 23 fixed on the surface move toward each other synchronously, until the two main molds 23 fit each other, and then fit with the end sub-mold 9 on the top synchronously, and under the continuous pressure of the main hydraulic rod 51, the pressure between the two main molds 23 and the end sub-mold 9 located above is increased synchronously to ensure the fit and sealing;

[0079] Secondly, when the main hydraulic rod 51 brings the top stroke seat 5 and the upper end sub-mold 9 close to the two main molds 23, the inclined pressure plate 62 simultaneously presses the two guide blocks 22 to move toward each other. At this time, the length of the hydraulic rod 65 is adjusted to be the longest, and the distance between the two inclined pressure plates 62 is the smallest, so that when the upper end sub-mold 9 does not contact the two main molds 23, the two main molds 23 are already in a fitted state. At this time, as the main hydraulic rod 51 continues to push the end sub-mold 9 downward, the synchronously adjusted hydraulic rod 65 begins to reduce the pressure, so that the distance between the two inclined pressure plates 62 begins to increase gradually by a small amplitude. At this time, the clamping pressure of the two main molds 23 is always constant. As the upper end sub-mold 9 contacts the two main molds 23, the clamping pressure between them can be controlled separately.

[0080] Through the above process, the mold closing control and coordination of the two main molds 23 and the end sub-mold 9 located at the top are carried out. The control of the end sub-mold 9 located at the bottom is summarized in detail below:

[0081] Among them, the attached figure of this scheme is in the structural display state of the discharging mode, which can be Figure 2 As shown in the figure, the bottom mounting frame 32 and the end sub-mold 9 installed on its surface are located in the positioning groove 12 of the mold base 11, and moved to the middle position of the two main molds 23. This is the unloading process after the mold is closed. When the top mold pressing seat 52 moves downward with the main hydraulic rod 51, the one-way pull rod 10 on its surface moves downward synchronously, so that the bottom mold pressing seat 31 suspended at the bottom end of the one-way pull rod 10 moves downward synchronously until the bottom mounting frame 32 moves downward out of the positioning groove 12. At this time, the inclined pressure plate 62 contacts the inclined guide block. With the two main molds 23 approaching each other, the end sub-mold 9 on the surface of the bottom mounting frame 32 has completely slid into the pressure control cylinder 36 with the pressure control column 35 controlling it. At this time, the one-way pull rod 10 has moved downward to a certain distance under the action of gravity, and its bottom mounting frame 32 The height of the mold is changed to the direct control of the control component 4. At this time, several combined hydraulic rods 42 are injected with oil synchronously, so that the combined plate 43 of the driving tube starts to rise and fall, and the combined plate 43 slides on the surface of the mounting seat 41 with the retaining column 44. At this time, the combined plate 43 is lifted with the pressure control cylinder 36, and the pressure control column 35 is lifted synchronously with the pressure control column 35 of the inner wall, so that the bottom mold pressing seat 31 moves upward and contacts the mold base 11, so that the bottom mounting frame 32 and the end sub-mold 9 on its surface move upward until the end sub-mold 9 at the bottom contacts the two main molds 23. In this process, according to the fitting needs of the main mold 23 and the end sub-mold 9 located below, the combined hydraulic rod 42 is dynamically controlled to control the fitting relationship between the two main molds 23 and the end sub-mold 9 located at the bottom according to different mold characteristics;

[0082] Here is the mechanism of operation of the post-hydroforming reset:

[0083] After the two end sub-molds 9 are respectively located at the two ends of the two main molds 23 and fit together, high-pressure oil can be injected into the two ends through the end sub-molds 9 until molding. First, the combined force hydraulic rod 42 remains motionless or shortened to carry the combined force plate 43 down, and the main hydraulic rod 51 contracts. The end sub-mold 9 located above begins to move away from the two main molds 23. The two main molds 23 begin to reset under the action of the support columns 24 on one side and the springs on their surfaces. As the inclined pressure plate 62 gradually moves upward, the inclined guide block moves slowly with the main mold 23 until it is fully reset. At the same time, the top molding seat 52 moves and moves upward with the one-way pull rod 10 until the one-way pull rod 10 contacts the bottom molding seat 31 and moves up against it, and moves the end sub-mold 9 located below and the workpiece placed on its surface upward and partially leaks out above the positioning groove 12, which is convenient for the robot arm to take out, and can avoid the problem of limited movement space of the robot arm and difficulty in loading and unloading.

[0084] In summary, this solution not only realizes the control of larger multi-directional clamping force by the main hydraulic rod 51, but also its innovation lies in the precise control of the clamping process under the premise of ensuring a larger clamping pressure, as well as the synchronous coordination of the end sub-mold 9 and the main mold 23, which significantly improves the sealing of the molding and the quality of the workpiece.

[0085] Specifically, the device can adjust the clamping pressure of the main mold 23 and the end sub-mold 9 in real time according to different process requirements through the dual-mode operation of the variable-direction holding assembly 6. In the first mode, by adjusting the linkage of the hydraulic rod 65 and the holding frame 63, the precise adjustment of the holding force of the guide block 22 is achieved, so that the main mold 23 and the end sub-mold 9 can maintain a high degree of fit during the clamping process, ensuring the sealing effect during the molding process and avoiding workpiece defects caused by uneven pressure.

[0086] In addition, during the resetting process after molding, the top mold base 52 and the bottom mold base 31 are linked to achieve a smooth release of the workpiece, and a reasonable structural layout is designed to ensure that the robot arm can smoothly remove the workpiece without space restrictions. This design not only improves the operating efficiency of the equipment, but also reduces the failure rate of the equipment under high-intensity operation and prolongs its service life.

[0087] Therefore, while achieving high-precision molding, this solution significantly improves production efficiency and finished product quality through structural optimization design, providing a strong guarantee for the efficient manufacturing of complex-shaped workpieces.

[0088] 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 high pressure forming hydraulic press, characterized in that: include: Positioning module (1); The inner wall of the positioning module (1) is slidably provided with two main module assemblies (2), and the two main module assemblies (2) are axially and horizontally arranged opposite to each other; the positioning module (1) comprises a module base (11) fixed on the surface of four columns (8), a positioning groove (12) for sliding the two main module assemblies (2) is formed through the surface of the module base (11), guide holes (13) are symmetrically formed on both sides of the inner wall of the positioning groove (12), and a pressure hole (14) communicating with the guide hole (13) is formed on the upper surface of the module base (11); Bottom travel seat (3); The bottom travel seat (3) is arranged below the positioning module (1) and is used to cooperate with the two main module assemblies (2) in the positioning module (1) to perform bottom sealing and bonding; the main module assembly (2) comprises a main module mounting frame (21) slidably arranged on the inner wall of the positioning groove (12), and guide blocks (22) are symmetrically fixed on both sides of the main module mounting frame (21), and the guide blocks (22) are slidably arranged on the inner walls of the corresponding two guide holes (13), and the guide blocks (22) are slidably arranged on the inner wall of the pressure hole (14); A main mold (23) is installed on the surface of the main mold mounting frame (21), and a support column (24) is fixedly connected to the other side of the main mold mounting frame (21). The support column (24) penetrates and slides on one side of the mold base (11), and a spring for resetting the main mold (23) is arranged on the surface of the support column (24); Top travel seat (5); The top stroke seat (5) is arranged above the positioning module (1) and is in the same vertical direction as the bottom stroke seat (3); the top stroke seat (5) comprises a main hydraulic rod (51) which is fixed on the surface of the tension frame (7) through a load-bearing seat (53); the bottom end of the main hydraulic rod (51) is fixedly connected to a top molded seat (52); and a top mounting frame (54) is arranged on the lower surface of the top molded seat (52); Four columns (8); Four columns (8) penetrate the surface of the fixed positioning module (1), the bottom travel seat (3) and the top travel seat (5) penetrate and slide on the surface of the four columns (8), and the top ends of the four columns (8) are commonly fixed with a tension frame (7); Direction-changing pressing and holding component (6); The direction-changing pressing and holding assembly (6) is installed on both sides of the top stroke seat (5) and is used for mold closing control of the two main mold assemblies (2); the direction-changing pressing and holding assembly (6) comprises a pressing frame (63) fixedly connected to the upper surface of the top molding seat (52), the lower surface of the pressing frame (63) is fitted and slidably mounted with two main beams (61), both sides of the main beams (61) are fixed with inclined pressure plates (62), the surface of the inclined pressure plates (62) are fixed with two reinforcing guide columns (66), and the two reinforcing guide columns (66) are slidably arranged on one side of the top molding seat (52); A regulating hydraulic rod (65) is fixedly connected through the surface of the pressing frame (63), one end of the regulating hydraulic rod (65) is fixedly connected to the surface of the main beam (61), and an arc-shaped rib plate (64) is fixedly connected to the upper surface of the pressing frame (63); The inclined pressure plate (62) is slidably arranged on the inner wall of the pressure hole (14), and one side of the guide block (22) is consistent with the inclined surface of the inclined pressure plate (62); Control component (4); The control assembly (4) is fixedly connected to the bottom ends of the four columns (8) and is used to control the mold clamping pressure and position of the bottom stroke seat (3).

2. The high pressure forming hydraulic press according to claim 1, characterized in that: The bottom stroke seat (3) comprises a bottom molded seat (31), a surface of the bottom molded seat (31) is penetrated with a through hole (33), an inner wall of the through hole (33) is slidably provided with a pressure control column (35), a surface of the pressure control column (35) is fixedly connected with a one-way support seat (34), the one-way support seat (34) is fixedly connected to the lower surface of the through hole (33), the top end of the pressure control column (35) is fixedly connected with a bottom mounting frame (32), the top mounting frame (54) is installed on the upper surface of the bottom molded seat (31), the bottom end of the pressure control column (35) is slidably provided with a pressure control cylinder (36), the pressure control cylinder (36) is penetrated and fixed on the surface of the control component (4), and a clamp (37) is fixed on the lower surface of the bottom molded seat (31).

3. The high pressure forming hydraulic press according to claim 2, characterized in that: Two one-way pull rods (10) are slidably connected to the surfaces of the bottom mold base (31) and the top mold base (52), and the one-way pull rods (10) are slidably connected to the surface of the mold base (11).

4. The high pressure forming hydraulic press according to claim 2, characterized in that: The control assembly (4) comprises a mounting seat (41), a plurality of combined force hydraulic rods (42) are fixedly connected to the surface of the mounting seat (41) through a force-bearing sleeve (45), the bottom ends of the combined force hydraulic rods (42) are fixedly connected to a combined force plate (43), a plurality of retaining columns (44) are fixedly connected to the upper surface of the combined force plate (43), and the surfaces of the retaining columns (44) penetrate and slide on the surface of the mounting seat (41); The upper surface of the combined force plate (43) is fixedly connected to the bottom end of the pressure control cylinder (36).

5. The high pressure forming hydraulic press according to claim 4, characterized in that: The surfaces of the top mounting frame (54) and the bottom mounting frame (32) are both mounted with end sub-molds (9), and the two end sub-molds (9) are sealed in cooperation with the upper and lower sides of the two main molds (23).

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