Internal high-pressure forming machine capable of realizing extrusion material supplement

Abstract

The invention relates to the technical field of internal high-pressure forming equipment, and provides an extrusion feeding internal high-pressure forming machine which comprises an extrusion mechanism, and a forming mechanism is mounted in the extrusion mechanism; the extrusion mechanism comprises an extrusion part, the extrusion part has a telescopic function, and the telescopic end of the telescopic extrusion part is fixedly connected with a sliding plate; the forming mechanism comprises a partition plate and an upper die, the partition plate is provided with at least two second push-and-pull pieces, lower die parts are installed at one ends of the second push-and-pull pieces, all the lower die parts form a complete lower die, the upper die is provided with a forming cavity matched with the lower die in shape, the upper die is provided with at least one sliding rod, and the sliding rod is arranged in the forming cavity. One end of the sliding rod is connected with the upper die in a clamped mode, and a top plate is installed at one end of the sliding rod. The method is characterized in that in the material supplementing step after preliminary forming, more materials are pushed to a deformation part by applying extra pressure, the problem of fracture caused by insufficient materials is avoided, and the deformation specification of a formed part is expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of internal high-pressure forming equipment, and particularly to an extrusion feeding internal high-pressure forming machine. Background Art

[0002] Internal high-pressure forming technology is widely used in manufacturing metal parts with complex geometries, such as automotive frames, pipes, etc. This technology injects high-pressure liquid into the interior of a tubular or sheet-shaped prototype, causing it to expand in a mold and ultimately conform to the mold shape to achieve precise forming. Traditional internal high-pressure forming machines generally include a fixed upper mold and multiple movable lower mold components. These components are arranged around the prototype and, under the action of high-pressure liquid, cause the material to deform to fill the mold space. However, with the growth of industrial demands and technological advancements, the need for forming equipment that can handle more complex shapes and larger dimensional changes is also increasing day by day.

[0003] Although traditional internal high-pressure forming machines perform well in many application scenarios, they face some significant challenges during actual operation. A major problem is that the prototype is prone to bursting during the forming process, especially in cases where large deformations or high pressures are required. This situation is usually caused by the non-uniform distribution of the material under high pressure, resulting in excessive stretching in local areas and thus causing rupture. In addition, traditional forming methods are often limited by specific deformation specifications and are difficult to meet the requirements of modern manufacturing for diverse designs and higher flexibility, restricting their application scope and production efficiency.

[0004] The purpose of the present invention is to solve the problems that the traditional internal high-pressure forming machine is prone to bursting the prototype during the forming process and has limited deformation specifications. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems that the traditional internal high-pressure forming machine is prone to bursting the prototype during the forming process and has limited deformation specifications. The present invention adopts the following technical solutions:

[0006] An extrusion feeding internal high-pressure forming machine, including an extrusion mechanism, and a forming mechanism is installed inside the extrusion mechanism;

[0007] The extrusion mechanism includes an extrusion member, the extrusion member has a telescopic function, and a slide plate is fixedly connected to the telescopic end of the telescopic extrusion member;

[0008] The molding mechanism includes a partition plate and an upper mold. At least two second push-pull members are installed on the partition plate. A lower mold part is installed at one end of each second push-pull member. All the lower mold parts form a complete lower mold. The upper mold is provided with a molding cavity matching the shape of the lower mold. At least one sliding rod is installed on the upper mold. One end of the sliding rod is clamped with the upper mold. A top plate is installed at one end of the sliding rod. A top block is installed on the top plate. The top plate is fixedly connected with the sliding plate.

[0009] For an internal high-pressure molding machine with extrusion and feeding as described above, the extrusion mechanism includes a base. At least one support rod is installed on the base. A top seat is installed at one end of the support rod. The extrusion member is installed on the top seat. The sliding plate is sleeved outside the support rod. The support rod is slidably connected with the sliding plate.

[0010] For an internal high-pressure molding machine with extrusion and feeding as described above, at least one limiting groove is provided on the upper mold. The sliding rod is sleeved in the limiting groove. The limiting groove is slidably connected with the sliding rod. A snap ring is installed on the sliding rod. The snap ring is clamped with the limiting groove.

[0011] For an internal high-pressure molding machine with extrusion and feeding as described above, at least one groove is provided on the partition plate. The groove is used for installing the second push-pull member. At least one chute is provided on the partition plate. A connecting block is slidably connected in the chute. One end of the connecting block is fixedly connected with the lower mold part. The other end of the connecting block is fixedly connected with one end of the second push-pull member.

[0012] For an internal high-pressure molding machine with extrusion and feeding as described above, a bottom plate is installed at the bottom of the partition plate. A water inlet groove is provided on the bottom plate. A support block is installed on the top surface of the partition plate. A water delivery groove is provided on the support block. The water inlet groove is communicated with the water delivery groove.

[0013] For an internal high-pressure molding machine with extrusion and feeding as described above, the support block is provided with a second stepped section. A second chamfer is provided at the top edge of the support block.

[0014] For an internal high-pressure molding machine with extrusion and feeding as described above, the top block is provided with a first stepped section. A first chamfer is provided at the bottom edge of the top block.

[0015] For an internal high-pressure molding machine with extrusion and feeding as described above, first push-pull members are installed on both sides of the top seat. One end of each first push-pull member is fixedly connected with the sliding plate.

[0016] For an internal high-pressure molding machine with extrusion and feeding as described above, the shape of the front orthographic projection of the lower mold is trapezoidal.

[0017] An internal high-pressure forming machine with extrusion feeding as described above, wherein a water receiving groove is formed in the base.

[0018] Implementing the embodiments of the present invention has the following beneficial effects:

[0019] 1. In the present invention, the automatic centering of the prototype is achieved by controlling the synchronous movement of the lower die part, and the top block is pushed by the extrusion part to block the top of the prototype, and then high-pressure liquid is injected to cause the prototype to expand and form. Its uniqueness lies in the feeding step after the preliminary forming. By applying additional pressure to push more materials to the deformed part, it not only avoids the cracking problem caused by insufficient materials, but also expands the deformation specifications of the formed part, improves the design flexibility and manufacturing range of the product, thereby improving the production efficiency and the quality of the finished product.

[0020] In summary, the present invention solves the problems that the traditional internal high-pressure forming machine is prone to burst the prototype during the forming process and the deformation specifications are limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of an internal high-pressure forming machine with extrusion feeding of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the extrusion mechanism of an internal high-pressure forming machine with extrusion feeding of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure when the forming mechanism of an internal high-pressure forming machine with extrusion feeding of the present invention is closed.

[0025] Figure 4 It is a schematic diagram of the structure when the mold of an internal high-pressure forming machine with extrusion feeding of the present invention is opened.

[0026] Figure 5 It is an exploded view of the forming mechanism of an internal high-pressure forming machine with extrusion feeding of the present invention.

[0027] Figure 6 It is Figure 5 a schematic diagram of the structure from another angle.

[0028] Figure 7 It is a schematic diagram of the structure of the second push-pull mechanism of an internal high-pressure forming machine with extrusion feeding of the present invention.

[0029] Figure 8It is a schematic structural diagram of the top block of an internal high-pressure forming machine with extrusion feeding of the present invention.

[0030] Figure 9 It is a schematic structural diagram of the support block of an internal high-pressure forming machine with extrusion feeding of the present invention.

[0031] Figure 10 Is Figure 9 A schematic structural diagram of another angle of.

[0032] As shown in the figure:

[0033] 1. Extrusion mechanism; 11. Base; 111. Water receiving tank; 12. Top seat; 13. Support rod; 14. Slide plate; 15. Extrusion part; 16. First push-pull part; 2. Forming mechanism; 21. Bottom plate; 211. Water inlet tank; 22. Second push-pull part; 221. Connecting block; 23. Partition plate; 231. Slide groove; 232. Groove; 24. Lower die part; 25. Upper die; 251. Limit groove; 252. Forming cavity; 26. Slide rod; 261. Snap ring; 27. Top plate; 28. Top block; 281. First stepped section; 282. First chamfer; 29. Support block; 291. Second stepped section; 292. Second chamfer; 293. Water delivery tank. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0035] As Figures 1 to 10 shown, the present invention provides an internal high-pressure forming machine with extrusion feeding, including an extrusion mechanism 1, and a forming mechanism 2 is installed in the extrusion mechanism 1;

[0036] The extrusion mechanism 1 includes an extrusion part 15, the extrusion part 15 has a telescopic function, and a slide plate 14 is fixedly connected to the telescopic end of the telescopic extrusion part 15;

[0037] The forming mechanism 2 includes a partition plate 23 and an upper die 25. At least two second push-pull parts 22 are installed on the partition plate 23. One end of the second push-pull part 22 is installed with a lower die part 24. All the lower die parts 24 form a complete lower die. The upper die 25 is provided with a forming cavity 252 matching the shape of the lower die. At least one slide rod 26 is installed on the upper die 25. One end of the slide rod 26 is clamped with the upper die 25. One end of the slide rod 26 is installed with a top plate 27. The top plate 27 is installed with a top block 28. The top plate 27 is fixedly connected to the slide plate 14.

[0038] During operation, the prototype is first placed on the partition 23, and then the second push-pull member 22 is activated to move it downward and drive the lower mold part 24 to move synchronously toward the prototype, thereby realizing automatic centering of the prototype. When the lower mold part 24 is completely enclosed into a complete lower mold and surrounds the prototype, the extrusion member 15 in the extrusion mechanism 1 starts to operate, pushing the slide 14, the top plate 27 and the top block 28 to move downward as a whole until the lower mold completely enters the molding cavity 252 and the top block 28 blocks the top of the prototype. Then, by injecting high-pressure liquid into the interior of the prototype, the prototype is caused to expand and fit closely to the internal shape of the lower mold part 24, completing the preliminary molding process. After the preliminary molding stage, the extrusion member 15 in the extrusion mechanism 1 will continue to push the slide 14, the top plate 27 and the top block 28 to move further downward. This action is not just as simple as blocking the top of the prototype, but more importantly, it will apply additional pressure to the prototype. The role of this pressure is to push more material (i.e., incompletely filled or excess material) toward the parts that are undergoing deformation and expansion, thereby increasing the thickness of these parts and avoiding rupture due to insufficient material. At the same time, since material can be replenished in real time, the deformation specifications of the molded parts are no longer restricted, expanding the design and manufacturing range of the product, and improving production efficiency and finished product quality.

[0039] Optionally, in some embodiments, the extrusion member 15 is a hydraulic cylinder.

[0040] Optionally, in some embodiments, the second push-pull member 22 is a combination of one or more of a hydraulic cylinder, a pneumatic cylinder, and an electric push rod.

[0041] Furthermore, as a preferred embodiment of the present invention but not limiting, the extrusion mechanism 1 includes a base 11, the base 11 is equipped with at least one support rod 13, one end of the support rod 13 is equipped with a top seat 12, the extrusion member 15 is installed on the top seat 12, the slide 14 is sleeved outside the support rod 13, and the support rod 13 is slidably connected to the slide 14. The design of the support rod 13 not only provides mechanical structural stability, but also plays a key guiding role, ensuring the high precision and stability of the slide 14, the top plate 27 and the top block 28 during extrusion and feeding operations. This effectively avoids operational errors caused by offset or instability, and improves the reliability of the molding process and the quality of the finished product. In addition, due to the presence of the support rod 13, the entire system can maintain structural stability while withstanding a large extrusion force, further improving the safety and durability of the equipment.

[0042] Furthermore, as a preferred embodiment of the present invention rather than a limitation, the upper die 25 is provided with at least one limiting groove 251. The sliding rod 26 is sleeved in the limiting groove 251, and the limiting groove 251 is slidably connected to the sliding rod 26. A snap ring 261 is installed on the sliding rod 26, and the snap ring 261 is snap-connected to the limiting groove 251. This design allows for a certain amount of movement space between the top plate 27 and the upper die 25, enabling the top plate 27 and the ejector block 28 to move freely within a certain range, facilitating precise entry into the forming cavity 252 for operation. In addition, a snap ring 261 is installed on the sliding rod 26, and the snap ring 261 matches the limiting groove 251 and can achieve snap connection. When the top plate 27 rises, due to the snap connection between the snap ring 261 and the limiting groove 251, the top plate 27 will drive the upper die 25 to rise together, ensuring that the relative positions of the top plate 27, the ejector block 28, and the upper die 25 remain unchanged, thus ensuring that the top plate 27 can accurately enter the forming cavity 252 during each operation. Since there is a certain amount of movement space between the top plate 27 and the upper die 25, after the upper die 25 is sleeved on the lower die, the ejector block 28 still has sufficient descending space, facilitating the feeding operation of the prototype part and preventing the bursting phenomenon caused by insufficient materials.

[0043] Furthermore, as a preferred embodiment of the present invention rather than a limitation, the partition 23 is provided with at least one groove 232 for installing the second push-pull member 22. The partition 23 is provided with at least one chute 231, and a connecting block 221 is slidably connected in the chute 231. One end of the connecting block 221 is fixedly connected to the lower die part 24, and the other end of the connecting block 221 is fixedly connected to one end of the second push-pull member 22. When the second push-pull member 22 is activated, it will push or pull the connecting block 221 to slide along the chute 231, thereby driving the lower die part 24 to move synchronously. This design enables multiple lower die parts 24 to accurately move closer to the center, realizing the automatic centering and surrounding operation of the prototype part. It improves the accuracy and stability of the movement of the lower die part 24 and also ensures that multiple lower die parts 24 can move synchronously, avoiding problems caused by movement deviation.

[0044] Furthermore, as a preferred embodiment of the present invention rather than a limitation, a bottom plate 21 is installed at the bottom of the partition 23. The bottom plate 21 is provided with a water inlet groove 211. A support block 29 is installed on the top surface of the partition 23, and the support block 29 is provided with a water delivery groove 293. The water inlet groove 211 is communicated with the water delivery groove 293. When high-pressure liquid enters through the water inlet groove 211, it will flow along the water delivery groove 293 and finally be injected into the prototype part. This structural design ensures that the high-pressure liquid can be stably and evenly delivered into the prototype part, thereby realizing the expansion effect during the internal high-pressure forming process.

[0045] Furthermore, as a preferred embodiment of the present invention but not a limitation, the support block 29 is provided with a second step section 291, and the top edge of the support block 29 is provided with a second chamfer 292. The function of the second step section 291 is to provide a clear docking position for the prototype, so that the prototype can be accurately placed on the support block 29, ensuring that its initial position during the molding process is accurate. At the same time, the design of the second chamfer 292 on the top edge of the support block 29 can guide the prototype to enter the predetermined position smoothly, reduce the placement deviation caused by manual operation or mechanical error, and thus further improve the positioning accuracy of the prototype. At the same time, the design of the second chamfer 292 plays a guiding and buffering role, which not only reduces the difficulty of operation, but also reduces the risk of friction or collision damage between the prototype and the support block 29.

[0046] Furthermore, as a preferred embodiment of the present invention but not limiting, the top block 28 is provided with a first step section 281, and the bottom edge of the top block 28 is provided with a first chamfer 282. The main function of the first step section 281 is to support the top of the prototype during the molding process, to ensure that the prototype can be accurately sealed, and to prevent high-pressure liquid from leaking from the top during the expansion process. At the same time, the first chamfer 282 design of the bottom edge of the top block 28 helps to guide the top block 28 to accurately enter the opening of the prototype, reducing the risk of operational failure or damage to the prototype due to position deviation. When the extrusion member 15 drives the slide 14, the top plate 27 and the top block 28 to move downward, the first chamfer 282 first contacts the edge of the prototype, and through its guiding effect, helps the top block 28 to enter smoothly and finally complete the closure of the prototype by the first step section 281.

[0047] Furthermore, as a preferred embodiment of the present invention but not a limitation, first push-pull members 16 are installed on both sides of the top seat 12, and one end of the first push-pull member 16 is fixedly connected to the slide 14. This design allows the first push-pull member 16 to apply force synchronously when an extrusion operation is required, pushing or pulling the slide 14 to move up and down precisely along the support rod 13. The first push-pull members 16 arranged symmetrically on both sides provide a balanced push-pull force, ensuring the smoothness and accuracy of the movement of the slide 14. This not only helps maintain mechanical stability throughout the extrusion process, but also ensures that the top block 28 can move down accurately and ultimately close the top of the prototype, preparing for subsequent high-pressure forming operations.

[0048] Optionally, in some embodiments, the first pushing and pulling member 16 is a hydraulic cylinder.

[0049] Further, as a preferred embodiment of the present invention rather than a limitation, the shape of the front orthographic projection of the lower mold is trapezoidal. A fillet is provided at the top edge of the lower mold part 24. When the lower mold part 24 encloses to form a complete lower mold and aligns with the molding cavity 252 of the upper mold 25, this trapezoidal and fillet design facilitates the accurate entry of the lower mold into the molding cavity 252.

[0050] Further, as a preferred embodiment of the present invention rather than a limitation, the base 11 is provided with a water receiving tank 111. The main function of the water receiving tank 111 is to collect the high-pressure liquid flowing out from the prototype or the die gap during the internal high-pressure forming process. After the high-pressure liquid completes the forming task of the prototype, some liquid may flow out along the outer wall of the lower mold part 24 or other gaps. At this time, the design of the water receiving tank 111 can effectively collect the flowing liquid, preventing it from splashing around or accumulating inside the equipment, which may affect the operating environment or cause safety hazards.

[0051] Embodiment 1:

[0052] The present invention provides an internal high-pressure forming machine with extrusion feeding, which includes an extrusion mechanism 1, and a forming mechanism 2 is installed inside the extrusion mechanism 1;

[0053] The extrusion mechanism 1 includes an extrusion member 15, the extrusion member 15 has a telescopic function, the telescopic end of the telescopic extrusion member 15 is fixedly connected with a slide plate 14, and the extrusion member 15 is a hydraulic cylinder;

[0054] The forming mechanism 2 includes a partition plate 23 and an upper mold 25. At least two second push-pull members 22 are installed on the partition plate 23. The second push-pull members 22 are hydraulic cylinders. One end of the second push-pull member 22 is installed with a lower mold part 24. All the lower mold parts 24 form a complete lower mold. The upper mold 25 is provided with a molding cavity 252 matching the shape of the lower mold. At least one sliding rod 26 is installed on the upper mold 25. One end of the sliding rod 26 is clamped with the upper mold 25. One end of the sliding rod 26 is installed with a top plate 27. A top block 28 is installed on the top plate 27. The top plate 27 is fixedly connected with the slide plate 14.

[0055] During operation, first place the prototype on the partition plate 23, and then start the second push-pull member 22 to move it downward and drive the lower die part 24 to approach the prototype synchronously, achieving automatic centering of the prototype. When the lower die part 24 completely encloses to form a complete lower die and surrounds the prototype, the extrusion member 15 in the extrusion mechanism 1 starts to operate, pushing the slide plate 14, the top plate 27, and the top block 28 to move downward as a whole until the lower die completely enters the forming cavity 252 and the top block 28 blocks the top of the prototype. Then, by injecting high-pressure liquid into the prototype, the prototype is prompted to expand and closely fit the internal shape of the lower die part 24, completing the preliminary forming process. After the preliminary forming stage, the extrusion member 15 in the extrusion mechanism 1 will continue to push the slide plate 14, the top plate 27, and the top block 28 to move further downward. This action is not just about blocking the top of the prototype. More importantly, it will apply additional pressure to the prototype. The effect of this pressure is to push more materials (i.e., incompletely filled or excess materials) to the parts that are undergoing deformation and expansion, thereby increasing the thickness of these parts, avoiding rupture caused by insufficient materials, and at the same time, since material can be replenished in real time, the deformation specifications of the formed parts are no longer restricted, expanding the product design and manufacturing scope, and improving production efficiency and finished product quality.

[0056] The shape of the front orthographic projection of the lower die is trapezoidal. The top edge of the lower die part 24 is provided with rounded corners. When the lower die part 24 encloses to form a complete lower die and aligns with the forming cavity 252 of the upper die 25, this trapezoidal and rounded corner design facilitates the accurate entry of the lower die into the forming cavity 252.

[0057] The extrusion mechanism 1 includes a base 11. At least one support rod 13 is installed on the base 11. One end of the support rod 13 is installed with a top seat 12. The extrusion member 15 is installed on the top seat 12. The slide plate 14 is sleeved outside the support rod 13, and the support rod 13 is slidably connected to the slide plate 14. The design of the support rod 13 not only provides mechanical stability but also plays a key guiding role, ensuring the high precision and stability of the slide plate 14, the top plate 27, and the top block 28 during the extrusion and feeding operations. This effectively avoids operation errors caused by deviation or instability, improves the reliability of the forming process and the quality of the finished product. In addition, due to the presence of the support rod 13, the entire system can maintain structural stability while withstanding a large extrusion force, further enhancing the safety and durability of the equipment. On both sides of the top seat 12, first push-pull members 16 are installed. The first push-pull members 16 are hydraulic cylinders. One end of the first push-pull member 16 is fixedly connected to the slide plate 14. This design enables the first push-pull members 16 to apply force synchronously when extrusion operations are required, pushing or pulling the slide plate 14 to move precisely up and down along the support rod 13. By providing balanced pushing and pulling forces through the symmetrically arranged first push-pull members 16 on both sides, the smoothness and accuracy of the movement of the slide plate 14 are ensured. This not only helps to maintain the mechanical stability during the entire extrusion process but also ensures that the top block 28 can move down accurately and finally close the top of the prototype, preparing for the subsequent high-pressure forming operation.

[0058] The base 11 is provided with a water receiving groove 111. The main function of the water receiving groove 111 is to collect the high-pressure liquid flowing out from the prototype or the die gap during the internal high-pressure forming process. When the high-pressure liquid completes the forming task of the prototype, part of the liquid may flow out along the outer wall of the lower die part 24 or other gaps. At this time, the design of the water receiving groove 111 can effectively collect the flowing liquid, preventing it from splashing everywhere or accumulating inside the equipment, which may affect the operation environment or cause safety hazards.

[0059] The upper mold 25 is provided with at least one limit groove 251. The sliding rod 26 is sleeved in the limit groove 251. The limit groove 251 is slidably connected to the sliding rod 26. A snap ring 261 is installed on the sliding rod 26, and the snap ring 261 is clamped with the limit groove 251. This design allows a certain amount of movement space between the top plate 27 and the upper mold 25, allowing the top plate 27 and the top block 28 to move freely within a certain range, so as to accurately enter the forming cavity 252 for operation. In addition, a snap ring 261 is installed on the sliding rod 26, and the snap ring 261 matches the limit groove 251 and can be clamped. When the top plate 27 rises, due to the clamping effect between the snap ring 261 and the limit groove 251, the top plate 27 will drive the upper mold 25 to rise together, ensuring that the relative positions of the top plate 27, the top block 28 and the upper mold 25 remain unchanged, so as to ensure that the top plate 27 can accurately enter the forming cavity 252 during each operation. Since there is a certain amount of movement space between the top plate 27 and the upper mold 25, after the upper mold 25 is sleeved on the lower mold, the top block 28 still has enough descending space, which is convenient for feeding the prototype part and preventing the bursting phenomenon caused by insufficient materials.

[0060] The partition plate 23 is provided with at least one groove 232 for installing the second push-pull member 22. The partition plate 23 is provided with at least one sliding groove 231. A connecting block 221 is slidably connected in the sliding groove 231. One end of the connecting block 221 is fixedly connected to the lower mold part 24, and the other end of the connecting block 221 is fixedly connected to one end of the second push-pull member 22. When the second push-pull member 22 is activated, it will push or pull the connecting block 221 to slide along the sliding groove 231, thereby driving the lower mold part 24 to move synchronously. This design enables multiple lower mold parts 24 to accurately move closer to the center, realizing the automatic centering and surrounding operation of the prototype part. It improves the accuracy and stability of the movement of the lower mold part 24, and also ensures that multiple lower mold parts 24 can move synchronously, avoiding problems caused by movement deviation.

[0061] The bottom of the partition plate 23 is installed with a bottom plate 21. The bottom plate 21 is provided with a water inlet groove 211. The top surface of the partition plate 23 is installed with a support block 29. The support block 29 is provided with a water delivery groove 293. The water inlet groove 211 is communicated with the water delivery groove 293. When high-pressure liquid enters through the water inlet groove 211, it will flow along the water delivery groove 293 and finally be injected into the prototype part. This structural design ensures that the high-pressure liquid can be stably and evenly delivered into the prototype part, thereby realizing the expansion effect during the internal high-pressure forming process.

[0062] The support block 29 is provided with a second step section 291, and the top edge of the support block 29 is provided with a second chamfer 292. The function of the second step section 291 is to provide a clear docking position for the prototype, so that the prototype can be accurately placed on the support block 29, ensuring that its initial position during the molding process is accurate. At the same time, the second chamfer 292 design on the top edge of the support block 29 can guide the prototype to enter the predetermined position smoothly, reduce the placement deviation caused by manual operation or mechanical error, and thus further improve the positioning accuracy of the prototype. At the same time, the design of the second chamfer 292 plays a guiding and buffering role, which not only reduces the difficulty of operation, but also reduces the risk of friction or collision damage between the prototype and the support block 29. The top block 28 is provided with a first step section 281, and the bottom edge of the top block 28 is provided with a first chamfer 282. The main function of the first step section 281 is to support the top of the prototype during the molding process, ensuring that the prototype can be accurately sealed and preventing high-pressure liquid from leaking from the top during the expansion process. At the same time, the first chamfer 282 at the bottom edge of the top block 28 helps guide the top block 28 accurately into the opening of the prototype, reducing the risk of operational failure or damage to the prototype due to positional deviation. When the extrusion member 15 drives the slide 14, the top plate 27, and the top block 28 downward, the first chamfer 282 first contacts the edge of the prototype, guiding the top block 28 smoothly into the prototype, and finally completing the sealing of the prototype by the first step 281.

[0063] Specifically, the working principle of the present invention is as follows:

[0064] When operating the extrusion-filled high-pressure molding machine, first place the prototype on the support block 29 of the partition 23. The second step 291 and the second chamfer 292 on the support block 29 ensure that the prototype can be accurately positioned and smoothly enter the predetermined position. Then start the second push-pull member 22 (hydraulic cylinder) installed on the partition 23, and slide along the slide 231 through the connecting block 221, driving the lower mold part 24 to move synchronously toward the center, realizing automatic centering of the prototype. When the lower mold part 24 is completely enclosed into a complete trapezoidal lower mold and surrounds the prototype, the extrusion member 15 (hydraulic cylinder) on the top seat 12 starts to operate, pushing the slide 14, the top plate 27 and the top block 28 to move downward as a whole until the lower mold completely enters the molding cavity 252. The first step 281 of the top block 28 blocks the top of the prototype, and is guided by the first chamfer 282 to ensure precise docking.

[0065] After initially closing the top of the prototype, high-pressure liquid is introduced into the interior of the prototype through the water inlet groove 211 on the bottom plate 21 and the water delivery groove 293 in the support block 29, causing the prototype to expand and closely fit the internal shape of the lower die part 24, thus completing the preliminary forming process. During this process, due to the precise fit between the top block 28 and the support block 29, it is ensured that the high-pressure liquid does not leak from the top. In addition, there is a certain clearance between the top plate 27 and the upper die 25 through the sliding rod 26 and the limit groove 251. At the same time, the clamping mechanism of the snap ring 261 and the limit groove 251 ensures the immutability of the relative position between the top plate 27 and the upper die 25, enabling the top block 28 to accurately enter the forming cavity 252 during each operation, providing guarantee for subsequent precise material replenishment.

[0066] After the preliminary forming stage is completed, the extrusion member 15 in the extrusion mechanism 1 continues to apply force, pushing the slide plate 14, the top plate 27 and the top block 28 to move further downward, applying additional pressure to the prototype for material replenishment to avoid cracking problems caused by insufficient materials. This real-time material replenishment mechanism not only improves the quality of the finished product but also expands the possibilities of product deformation specifications. During the whole process, the water receiving groove 111 on the base 11 effectively collects the high-pressure liquid that may flow out from the die gap, preventing potential safety hazards caused by liquid splashing or accumulation, and also facilitating cleaning and maintenance to ensure the long-term stable operation of the equipment. The first push-pull members 16 (hydraulic cylinders) symmetrically arranged on both sides provide balanced pushing and pulling forces, ensuring the smoothness and accuracy of the movement of the slide plate 14 and enhancing the mechanical stability of the system.

[0067] In summary, the present invention solves the problems that traditional internal high-pressure forming machines are prone to bursting the prototype during the forming process and have limited deformation specifications.

[0068] It should be understood that in the present invention, terms such as "first" and "second" are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 construed as a limitation to the present invention.

[0069] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and deformations can be made, and these improvements and deformations are also regarded as the protection scope of the present invention.

Claims

1. An internal high-pressure forming machine with extrusion feeding, comprising an extrusion mechanism (1), characterized in that, A forming mechanism (2) is installed inside the extrusion mechanism (1); The extrusion mechanism (1) includes an extrusion member (15), the extrusion member (15) has a telescopic function, and a sliding plate (14) is fixedly connected to the telescopic end of the telescopic extrusion member (15); The forming mechanism (2) includes a partition plate (23) and an upper die (25). At least two second push-pull members (22) are installed on the partition plate (23). A lower die part (24) is installed at one end of the second push-pull member (22). All the lower die parts (24) form a complete lower die. A forming cavity (252) matching the shape of the lower die is provided in the upper die (25). At least one sliding rod (26) is installed on the upper die (25). One end of the sliding rod (26) is clamped with the upper die (25). A top plate (27) is installed at one end of the sliding rod (26). A top block (28) is installed on the top plate (27). The top plate (27) is fixedly connected to the sliding plate (14).

2. The internal high-pressure forming machine for extrusion feeding according to claim 1, wherein, The extrusion mechanism (1) includes a base (11). At least one support rod (13) is installed on the base (11). A top seat (12) is installed at one end of the support rod (13). The extrusion member (15) is installed on the top seat (12). The sliding plate (14) is sleeved outside the support rod (13), and the support rod (13) is slidably connected to the sliding plate (14).

3. The internal high-pressure forming machine for extrusion feeding according to claim 1, characterized in that, At least one limiting groove (251) is provided in the upper die (25). The sliding rod (26) is sleeved in the limiting groove (251), and the limiting groove (251) is slidably connected to the sliding rod (26). A snap ring (261) is installed on the sliding rod (26), and the snap ring (261) is clamped with the limiting groove (251).

4. A hydroforming machine with extrusion feeding according to claim 1, characterized in that At least one groove (232) is provided in the partition plate (23) for installing the second push-pull member (22). At least one chute (231) is provided in the partition plate (23). A connecting block (221) is slidably connected in the chute (231). One end of the connecting block (221) is fixedly connected to the lower die part (24), and the other end of the connecting block (221) is fixedly connected to one end of the second push-pull member (22).

5. The internal high-pressure forming machine for extrusion feeding according to claim 1, wherein A bottom plate (21) is installed at the bottom of the partition plate (23). A water inlet groove (211) is provided in the bottom plate (21). A support block (29) is installed on the top surface of the partition plate (23). A water delivery groove (293) is provided in the support block (29), and the water inlet groove (211) is communicated with the water delivery groove (293).

6. The internal high-pressure forming machine with extrusion feeding according to claim 5, characterized in that, The support block (29) is provided with a second stepped section (291), and a second chamfer (292) is provided at the top edge of the support block (29).

7. The internal high-pressure forming machine for extrusion and feeding according to claim 1, wherein, The top block (28) is provided with a first stepped section (281), and a first chamfer (282) is provided at the bottom edge of the top block (28).

8. The internal high-pressure forming machine with extrusion feeding according to claim 2, characterized in that, First push-pull members (16) are installed on both sides of the top seat (12), and one end of the first push-pull member (16) is fixedly connected to the sliding plate (14).

9. The internal high-pressure forming machine for extrusion feeding according to claim 1, characterized in that, The shape of the front orthographic projection of the lower die is trapezoidal.

10. The internal high-pressure forming machine for extrusion feeding according to claim 2, characterized in that, The base (11) is provided with a water receiving groove (111).

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