Sheet metal part product hydraulic forming device

Abstract

The invention discloses a sheet metal part product hydraulic forming device, and relates to the technical field of sheet metal part manufacturing, and the sheet metal part product hydraulic forming device comprises a base, an automatic feeding assembly and a hydraulic forming main body. According to the device, the motor drives the two-way lead screw mechanism to drive the fixing pin to be inserted into the mold, and rapid replacement and stable locking of the upper mold and the lower mold are achieved. The automatic feeding assembly integrates a stock bin, a hydraulic lifting mechanism and a multi-axis adjustable feeding mechanism and can automatically complete the whole process operation of lifting, scraping and conveying, surface cleaning and precise positioning to a lower die cavity of the plate. A closed circulating cooling system is further integrated in the device, and real-time temperature control is conducted on the forming mold through a built-in runner. According to the metal plate hydraulic forming device, the functions of rapid die changing, automatic feeding and efficient cooling are integrated, the automation degree, production efficiency and product quality stability of metal plate hydraulic forming are remarkably improved, and the metal plate hydraulic forming device is particularly suitable for the flexible production requirements of multiple varieties and small batches.

Description

Technical Field

[0001] This invention relates to the field of sheet metal manufacturing technology, and in particular to a hydraulic forming device for sheet metal products. Background Technology

[0002] In existing technologies, hydroforming of sheet metal parts typically relies on hydraulic equipment with a fixed structure. This type of equipment suffers from several drawbacks: First, the installation and replacement of molds are cumbersome and time-consuming, requiring manual tightening with numerous bolts, severely restricting production efficiency, especially in flexible manufacturing scenarios with diverse product types and small batches. Second, the loading process has low automation, relying heavily on manual labor or simple robotic arms, making it difficult to achieve precise and efficient positioning and transfer of sheet metal, and lacking the ability to clean impurities from the sheet metal surface, potentially affecting the final product quality. Third, during continuous high-pressure forming, the mold temperature rises significantly, easily leading to uneven product cooling and thermal deformation, affecting dimensional accuracy; traditional cooling methods are inefficient and lack integration. Furthermore, traditional mold fixing methods also pose a risk of insufficient stability, potentially causing micro-movements under high pressure, affecting forming accuracy. Therefore, there is an urgent need for a hydroforming device that can achieve rapid mold replacement, integrated automated loading and unloading, and a high-efficiency cooling system to comprehensively improve production automation, efficiency, and product consistency. Summary of the Invention

[0003] The present invention provides a sheet metal product hydraulic forming device, including a base and an automatic feeding component. The automatic feeding component is provided on one side of the base, a first mounting frame is provided on the top of the base, a first hydraulic cylinder is provided on the top of the first mounting frame, the bottom output end of the first hydraulic cylinder is fixedly connected to the top of the upper pressure plate, and a lower pressure plate is provided at the bottom of the first mounting frame. An upper mold base is provided below the upper pressure plate. Two first fixing holes are provided on both sides of the upper mold base. A first mounting groove is provided at the bottom of the upper pressure plate. A first bidirectional lead screw is rotatably connected in the first mounting groove. A first motor for driving the first bidirectional lead screw is provided on the side wall of the upper pressure plate. A first connecting block is threaded to both ends of the first bidirectional lead screw. The bottom of the first connecting block is fixedly connected to the bottom of the mounting block. Fixing pins are provided at both ends of the opposite side of the mounting block. The upper pressure plate and the upper mold base are fixed by inserting the fixing pins into the first fixing holes. A lower mold is provided above the lower pressure plate. Two second fixing holes are provided on both sides of the lower mold. A second mounting groove is provided on the top of the lower pressure plate. A second bidirectional lead screw is rotatably connected in the second mounting groove. A second motor for driving the second bidirectional lead screw is provided on the side wall of the lower pressure plate. A second connecting block is threaded to both ends of the second bidirectional lead screw. The top of the second connecting block is fixedly connected to the bottom of the mounting block. The lower pressure plate and the lower mold are fixed by inserting a fixing pin into the second fixing hole.

[0004] Preferred: The automatic feeding assembly includes a second mounting bracket, a scraper, a guide frame, and a hopper; A second mounting bracket is provided on one side of the base. A material box is provided inside the second mounting bracket. Two third mounting slots are provided horizontally at the top of the inner wall of the second mounting bracket away from the base. A first lead screw is rotatably connected in each of the third mounting slots. A third motor for driving the first lead screw is provided on the side wall of the second mounting bracket. A third connecting block is threaded on the first lead screw. The bottom of the third connecting block is fixedly connected to the top of the first electric telescopic rod. The bottom output end of the first electric telescopic rod is fixedly connected to the top of the scraper. The third mounting slot has a fourth mounting slot arranged longitudinally on the side near the base. A transmission rod is rotatably connected in the fourth mounting slot. Two active bevel gears are provided on the transmission rod. A fourth motor for driving the transmission rod is provided on the side wall of the second mounting frame. Two fifth mounting slots are horizontally arranged on the side of the fourth mounting slot near the base. A second lead screw is installed in the fifth mounting slot. One end of the second lead screw is rotatably connected to the inner wall of the fifth mounting slot, and the other end passes through the inner wall of the fifth mounting slot and is equipped with a driven bevel gear. The driven bevel gear meshes with the driving bevel gear. Two fourth connecting blocks are threaded onto the second lead screw. The bottom of the fourth connecting block is fixedly connected to the top of the second electric telescopic rod. The bottom output end of the second electric telescopic rod is movably connected to the top of the guide frame through a universal joint.

[0005] Preferably, brushes are provided on the upper and lower inner walls of the guide frame on the side away from the base, and multiple first guide rollers are arranged on one side of the brushes at the bottom of the guide frame.

[0006] Preferably, a second hydraulic cylinder is provided at the bottom of the inner wall of the material box, the top output end of the second hydraulic cylinder is fixedly connected to the bottom of the lifting plate, a sixth mounting groove is provided on both sides of the inner wall of the material box, a guide rod is provided in the sixth mounting groove, sliders are provided at both ends of the lifting plate, the sliders are slidably connected to the guide rods, and a second guide roller is provided at the top of the side wall of the material box near the base.

[0007] Preferably, the bottom of the material box is slidably connected to the base plate of the second mounting frame via multiple slide rails. A support plate is provided on the side of the material box near the base. The side of the support plate near the material box is fixedly connected to one end of the third electric telescopic rod. The output end of the other end of the third electric telescopic rod is fixedly connected to the lower end of one side wall of the material box.

[0008] Preferably, a chiller is installed inside the base, and a water supply pipe and a water return pipe are connected to the side wall of the chiller away from the base. A water inlet and a water outlet are provided on the side wall of the lower mold. A cooling tank is provided inside the lower mold and is connected to the water inlet and the water outlet. The water supply pipe and the water return pipe are detachably connected to the water inlet and the water outlet, respectively.

[0009] Compared with the prior art, the beneficial effects of the present invention are: The quick-locking mechanism driven by a bidirectional screw-driven fixing pin enables rapid replacement and stable clamping of the upper and lower molds, greatly shortening production preparation time and laying the foundation for flexible production of multiple varieties. The integrated automatic feeding assembly, incorporating hydraulic lifting, scraper feeding, brush cleaning, and an adjustable guide frame, achieves automatic and precise feeding and surface cleaning of sheet metal, effectively improving production efficiency and product consistency. By integrating the chiller and the mold's internal flow channel into a closed-loop cooling system, precise temperature control during the forming process is ensured, significantly improving product dimensional accuracy and quality stability. The synergistic effect of these systems constitutes a highly automated, adaptable, and reliable hydraulic forming device with stable processing quality. Attached Figure Description

[0010] Figure 1 This diagram shows a three-dimensional structural schematic of the present invention; Figure 2 This is a cross-sectional view of the internal structure of the present invention; Figure 3 This invention is shown Figure 1 Enlarged cross-sectional view of the structure at point A in the middle; Figure 4 This invention is shown Figure 2 Enlarged cross-sectional view of the structure at point B in the middle; Figure 5 This invention is shown Figure 2 Enlarged cross-sectional view of the structure at point C; Figure 6 This diagram shows a cross-sectional view of the internal structure of the guide frame of the present invention. Figure 7 This diagram shows a cross-sectional view of the internal structure of the material box of the present invention; Figure 8 A cross-sectional view of the internal structure of the mold of the present invention is shown.

[0011] The components are as follows: 1. Base; 2. First mounting bracket; 3. First hydraulic cylinder; 4. Upper pressure plate; 401. First mounting slot; 5. Lower pressure plate; 501. Second mounting slot; 6. Upper mold base; 601. First fixing hole; 7. Lower mold; 701. Second fixing hole; 702. Water inlet; 703. Water outlet; 704. Cooling tank; 8. First double-acting lead screw; 801. First motor; 9. First connecting block; 10. Second double-acting lead screw; 1001. Second motor; 11. Second connecting block; 12. Mounting block; 1201. Fixing pin; 13. Second mounting bracket; 1301. Third mounting slot; 1302. Fourth mounting slot; 1303. Fifth mounting slot; 14. First lead screw; 14 01. Third motor; 15. Third connecting block; 16. First electric telescopic rod; 17. Scraper; 18. Transmission rod; 1801. Fourth motor; 1802. Driving bevel gear; 19. Second lead screw; 1901. Driven bevel gear; 20. Fourth connecting block; 21. Second electric telescopic rod; 22. Universal joint; 23. Guide frame; 24. Brush; 25. First guide roller; 26. Material box; 2601. Sixth mounting slot; 2602. Guide rod; 2603. Second guide roller; 27. Second hydraulic cylinder; 28. Lifting plate; 2801. Slider; 29. ​​Slide rail; 30. Support plate; 31. Third electric telescopic rod; 32. Chiller; 33. Water supply pipe; 34. Water return pipe. Detailed Implementation

[0012] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0013] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0014] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0015] Reference Figure 1 and Figure 3As shown, in this embodiment, a sheet metal product hydraulic forming device has an upper mold base 6 below the upper pressure plate 4. The upper mold base 6 has two first fixing holes 601 on both sides. The bottom of the upper pressure plate 4 has a first mounting groove 401. A first bidirectional lead screw 8 is rotatably connected in the first mounting groove 401. A first motor 801 for driving the first bidirectional lead screw 8 is provided on the side wall of the upper pressure plate 4. Both ends of the first bidirectional lead screw 8 are threadedly connected to a first connecting block 9. The bottom of the first connecting block 9 is fixedly connected to the bottom of the mounting block 12. Fixing pins 1201 are provided at both ends of the opposite side of the mounting block 12. The upper pressure plate 4 and the upper mold base 6 are fixed by inserting the fixing pins 1201 into the first fixing holes 601. A lower mold 7 is provided above the lower pressure plate 5. Two second fixing holes 701 are provided on both sides of the lower mold 7. A second mounting groove 501 is provided on the top of the lower pressure plate 5. A second bidirectional lead screw 10 is rotatably connected in the second mounting groove 501. A second motor 1001 for driving the second bidirectional lead screw 10 is provided on the side wall of the lower pressure plate 5. A second connecting block 11 is threaded to both ends of the second bidirectional lead screw 10. The top of the second connecting block 11 is fixedly connected to the bottom of the mounting block 12. The lower pressure plate 5 and the lower mold 7 are fixed by inserting the fixing pin 1201 into the second fixing hole 701.

[0016] Through the above embodiments, the first motor 801 and the second motor 1001 can precisely drive the first bidirectional lead screw 8 and the second bidirectional lead screw 10 to rotate, thereby controlling the two sets of mounting blocks 12 to move towards or away from each other. Ultimately, this allows the fixing pin 1201 to synchronously and precisely insert into or disengage from the first fixing hole 601 and the second fixing hole 701. This achieves synchronous, stable, and rapid locking and separation between the upper mold base 6 and the upper pressure plate 4, and between the lower mold 7 and the lower pressure plate 5, greatly shortening mold replacement and production preparation time. It provides key technical support for the equipment to adapt to the flexible production needs of multiple varieties and small batches.

[0017] This invention provides an embodiment, with reference to Figure 2 — Figure 7 As shown, a second mounting bracket 13 is provided on one side of the base 1. A material box 26 is provided inside the second mounting bracket 13. Two third mounting slots 1301 are provided horizontally at the top of the inner wall of the second mounting bracket 13 away from the base 1. A first lead screw 14 is rotatably connected in each of the third mounting slots 1301. A third motor 1401 for driving the first lead screw 14 is provided on the side wall of the second mounting bracket 13. A third connecting block 15 is threadedly connected to the first lead screw 14. The bottom of the third connecting block 15 is fixedly connected to the top of the first electric telescopic rod 16. The bottom output end of the first electric telescopic rod 16 is fixedly connected to the top of the scraper 17. The third mounting slot 1301 is longitudinally provided with a fourth mounting slot 1302 on the side near the base 1. A transmission rod 18 is rotatably connected in the fourth mounting slot 1302. Two active bevel gears 1802 are provided on the transmission rod 18. A fourth motor 1801 for driving the transmission rod 18 is provided on the side wall of the second mounting frame 13. Two fifth mounting slots 1303 are horizontally arranged on the side of the fourth mounting slot 1302 near the base 1. A second lead screw 19 is installed in the fifth mounting slot 1303. One end of the second lead screw 19 is rotatably connected to the inner wall of the fifth mounting slot 1303, and the other end passes through the inner wall of the fifth mounting slot 1303 and is provided with a driven bevel gear 1901. The driven bevel gear 1901 meshes with the driving bevel gear 1802. Two fourth connecting blocks 20 are threadedly connected to the second lead screw 19. The bottom of the fourth connecting block 20 is fixedly connected to the top of the second electric telescopic rod 21. The bottom output end of the second electric telescopic rod 21 is movably connected to the top of the guide frame 23 through a universal joint 22. The upper and lower inner walls of the guide frame 23 away from the base 1 are provided with brushes 24, and a plurality of first guide rollers 25 are arranged on one side of the bottom brushes 24 of the guide frame 23. A second hydraulic cylinder 27 is provided at the bottom of the inner wall of the material box 26. The top output end of the second hydraulic cylinder 27 is fixedly connected to the bottom of the lifting plate 28. A sixth mounting groove 2601 is provided on both sides of the inner wall of the material box 26. A guide rod 2602 is provided in the sixth mounting groove 2601. A slider 2801 is provided at both ends of the lifting plate 28. The slider 2801 is slidably connected to the guide rod 2602. A second guide roller 2603 is provided on the top of the side wall of the material box 26 near the base 1.

[0018] Through the above embodiments, the second hydraulic cylinder 27 can stably lift the lifting plate 28, raising the sheet metal in the material box 26 to the discharge height. The scraper 17, driven by the third motor 1401 and the first electric telescopic rod 16, completes precise lateral pushing and downward scraping actions. The pushed sheet metal is smoothly discharged through the second guide roller 2603 and enters the guide frame 23 driven by the fourth motor 1801 through the bevel gear set 1802, 1901 and the second lead screw 19. The guide frame 23 can move laterally and adjust its tilt angle under the coordinated action of the second lead screw 19, the second electric telescopic rod 21 and the universal joint 22, thereby accurately guiding the sheet metal to the designated position of the lower mold 7. Throughout the process, the brush 24 in the guide frame 23 effectively removes impurities from the surface of the sheet metal, and the first guide roller 25 ensures smooth and damage-free sheet metal conveying.

[0019] This invention provides an embodiment, with reference to Figure 2As shown, the bottom of the material box 26 is slidably connected to the base plate of the second mounting frame 13 via multiple slide rails 29. A support plate 30 is provided on the side of the material box 26 near the base 1. The side of the support plate 30 near the material box 26 is fixedly connected to one end of the third electric telescopic rod 31. The output end of the other end of the third electric telescopic rod 31 is fixedly connected to the lower end of one side wall of the material box 26.

[0020] In the above embodiments, the material bin 26 is slidably connected to the base plate of the second mounting frame 13 via multiple slide rails 29 at its bottom, and is directly driven by the third electric telescopic rod 31 fixed to the support plate 30 to move it smoothly out or retract. This structural design enables the material bin 26 to be smoothly and completely pushed out of the second mounting frame 13 along the slide rails 29 during replenishment or maintenance, greatly facilitating operators to perform fast and efficient filling operations from the front of the equipment; after the operation is completed, the third electric telescopic rod 31 can accurately pull the material bin 26 back to its initial working position, ensuring precise coordination with the components of the automatic feeding system.

[0021] This invention provides an embodiment, with reference to Figure 1 and Figure 8 As shown, a chiller 32 is installed inside the base 1. A water supply pipe 33 and a water return pipe 34 are connected to the side wall of the chiller 32 away from the base 1. A water inlet 702 and a water outlet 703 are installed on one side wall of the lower mold 7. A cooling tank 704 is installed inside the lower mold 7. The cooling tank 704 is connected to the water inlet 702 and the water outlet 703. The water supply pipe 33 and the water return pipe 34 are detachably connected to the water inlet 702 and the water outlet 703, respectively.

[0022] Through the above embodiments, the chiller 32 integrated inside the base 1 establishes a detachable connection channel with the water inlet 702 and water outlet 703 on the side wall of the lower mold 7 via the water supply pipe 33 and water return pipe 34. This channel, together with the cooling tank 704 arranged inside the mold, constitutes a highly efficient closed-loop cooling system. This design allows the cooling medium generated by the chiller 32 to continuously circulate inside the mold, achieving precise control of the working temperature of the lower mold 7. On the one hand, this ensures that the sheet metal parts maintain a stable molding temperature field during high-pressure molding, effectively preventing quality problems such as part deformation and dimensional deviations caused by excessively high mold temperatures; on the other hand, through active temperature control, the cooling waiting time after product molding is significantly shortened, thereby improving production cycle time and overall efficiency.

[0023] Working principle of the invention: During operation, the automatic feeding component is activated first. The second hydraulic cylinder 27 in the material box 26 lifts the lifting plate 28 to raise the sheet to the discharge height. Then, the third motor 1401 drives the first lead screw 14 to drive the scraper 17 to scrape out the top layer of sheet. After the sheet is cleaned by the brush 24, it enters the guide frame 23. Then, the fourth motor 1801 drives the transmission rod 18 to rotate, which drives the second lead screw 19 through the bevel gear set 1802 and 1901 to move the guide frame 23 to the lower mold 7. Finally, the second electric telescopic rod 21 and universal joint 22 adjust the posture of the guide frame 23, and the second guide roller 2603 guides the sheet to be accurately delivered to the cavity of the lower mold 7. Subsequently, the mold quick fixing mechanism is activated. The first motor 801 and the second motor 1001 drive the first bidirectional lead screw 8 and the second bidirectional lead screw 1, respectively. 0. The fixing pin 1201 on the mounting block 12 is simultaneously inserted into the first fixing hole 601 of the upper mold base 6 and the second fixing hole 701 of the lower mold 7, completing the automatic locking of the mold. Then, the main forming system works, the first hydraulic cylinder 3 drives the upper pressure plate 4 and the upper mold base 6 to press down, close with the lower mold 7 and apply high pressure hydraulic pressure to the plate to form it. During this process, the integrated cooling system runs continuously. The chiller 32 is connected to the water inlet 702 and water outlet 703 of the lower mold 7 through the water supply pipe 33 and the water return pipe 34, so that the cooling medium circulates in the cooling tank 704 inside the mold, accurately controlling the mold temperature to ensure the forming quality and improve the production cycle. After forming is completed, each execution component is reset in sequence to realize fully automated cyclic production from automatic feeding, rapid mold changing, precision forming to efficient cooling.

[0024] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A hydraulic forming device for sheet metal products, characterized in that: Includes a base (1) and an automatic feeding component. An automatic feeding component is provided on one side of the base (1). A first mounting frame (2) is provided above the base (1). A first hydraulic cylinder (3) is provided on the top of the first mounting frame (2). The bottom output end of the first hydraulic cylinder (3) is fixedly connected to the top of the upper pressure plate (4). A lower pressure plate (5) is provided at the bottom of the first mounting frame (2). An upper mold base (6) is provided below the upper pressure plate (4). Two first fixing holes (601) are provided on both sides of the upper mold base (6). A first mounting groove (401) is provided at the bottom of the upper pressure plate (4). A first bidirectional screw (8) is rotatably connected in the first mounting groove (401). A first motor (801) for driving the first bidirectional screw (8) is provided on the side wall of the upper pressure plate (4). A first connecting block (9) is threaded to both ends of the first bidirectional screw (8). The bottom of the first connecting block (9) is fixedly connected to the bottom of the mounting block (12). Fixing pins (1201) are provided at both ends of the opposite side of the mounting block (12). The upper pressure plate (4) and the upper mold base (6) are fixed by inserting the fixing pins (1201) into the first fixing holes (601). A lower mold (7) is provided above the lower pressure plate (5). Two second fixing holes (701) are provided on both sides of the lower mold (7). A second mounting groove (501) is provided on the top of the lower pressure plate (5). A second bidirectional screw (10) is rotatably connected in the second mounting groove (501). A second motor (1001) for driving the second bidirectional screw (10) is provided on the side wall of the lower pressure plate (5). A second connecting block (11) is threaded to both ends of the second bidirectional screw (10). The top of the second connecting block (11) is fixedly connected to the bottom of the mounting block (12). The lower pressure plate (5) and the lower mold (7) are fixed by inserting the fixing pin (1201) into the second fixing hole (701).

2. The sheet metal product hydraulic forming device according to claim 1, characterized in that: The automatic feeding assembly includes a second mounting bracket (13), a scraper (17), a guide frame (23), and a hopper (26). A second mounting bracket (13) is provided on one side of the base (1). A material box (26) is provided inside the second mounting bracket (13). Two third mounting slots (1301) are provided horizontally at the top of the inner wall of the second mounting bracket (13) away from the base (1). A first lead screw (14) is rotatably connected in each of the third mounting slots (1301). A third motor (1401) for driving the first lead screw (14) is provided on the side wall of the second mounting bracket (13). A third connecting block (15) is threaded on the first lead screw (14). The bottom of the third connecting block (15) is fixedly connected to the top of the first electric telescopic rod (16). The bottom output end of the first electric telescopic rod (16) is fixedly connected to the top of the scraper (17). The third mounting slot (1301) has a fourth mounting slot (1302) longitudinally arranged on the side near the base (1). A transmission rod (18) is rotatably connected in the fourth mounting slot (1302). Two active bevel gears (1802) are provided on the transmission rod (18). A fourth motor (1801) for driving the transmission rod (18) is provided on the side wall of the second mounting frame (13). Two fifth mounting slots (1303) are arranged horizontally on the side of the fourth mounting slot (1302) near the base (1). A second screw (19) is provided in the fifth mounting slot (1303). One end of the second screw (19) is rotatably connected to the inner wall of the fifth mounting slot (1303), and the other end passes through the inner wall of the fifth mounting slot (1303) and is provided with a driven bevel gear (1901). The driven bevel gear (1901) meshes with the driving bevel gear (1802). Two fourth connecting blocks (20) are threaded on the second screw (19). The bottom of the fourth connecting block (20) is fixedly connected to the top of the second electric telescopic rod (21). The bottom output end of the second electric telescopic rod (21) is movably connected to the top of the guide frame (23) through a universal joint (22).

3. The sheet metal product hydraulic forming device according to claim 2, characterized in that: The guide frame (23) is provided with brushes (24) on the upper and lower inner walls on the side away from the base (1), and a plurality of first guide rollers (25) are arranged on one side of the brushes (24) at the bottom of the guide frame (23).

4. The sheet metal product hydraulic forming device according to claim 2, characterized in that: The bottom of the inner wall of the material box (26) is provided with a second hydraulic cylinder (27). The top output end of the second hydraulic cylinder (27) is fixedly connected to the bottom of the lifting plate (28). The inner walls of the material box (26) are provided with a sixth mounting groove (2601) on both sides. A guide rod (2602) is provided in the sixth mounting groove (2601). The lifting plate (28) is provided with sliders (2801) at both ends. The sliders (2801) are slidably connected to the guide rods (2602). The top of the side wall of the material box (26) near the base (1) is provided with a second guide roller (2603).

5. The sheet metal product hydraulic forming device according to claim 4, characterized in that: The bottom of the material box (26) is slidably connected to the base plate of the second mounting frame (13) via multiple slide rails (29). A support plate (30) is provided on the side of the material box (26) near the base (1). The side of the support plate (30) near the material box (26) is fixedly connected to one end of the third electric telescopic rod (31). The output end of the other end of the third electric telescopic rod (31) is fixedly connected to the lower end of one side wall of the material box (26).

6. The sheet metal product hydraulic forming device according to claim 1, characterized in that: A chiller (32) is installed inside the base (1). A water supply pipe (33) and a return pipe (34) are connected to the side wall of the chiller (32) away from the base (1). A water inlet (702) and a water outlet (703) are installed on one side wall of the lower mold (7). A cooling tank (704) is installed inside the lower mold (7). The cooling tank (704) is connected to the water inlet (702) and the water outlet (703). The water supply pipe (33) and the return pipe (34) are detachably connected to the water inlet (702) and the water outlet (703) respectively.

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