A high-strength steel plate hot stamping forming device and its usage method

Abstract

This invention discloses a hot stamping forming device for high-strength steel plates and its usage method, belonging to the field of hot stamping forming technology for high-strength steel plates. The key technical points are: a support arm is provided at the upper end of the worktable; a hydraulic telescopic rod is provided on the side of the support arm corresponding to the worktable; two sets of moving rods and an upper mold are respectively provided at the telescopic end of the hydraulic telescopic rod from top to bottom; the upper mold is higher than the ends of the two sets of moving rods; a placement groove is provided at the upper end of the worktable; a base is provided in the placement groove; a lower mold is provided on the upper end of the base; and the lower mold corresponds to the upper mold. This invention solves the problem in the prior art where, if a traditional direct-drive ejector is used to eject the formed workpiece, and if synchronous pressure is not applied to the entire contact surface, localized stress will be generated in the weak parts of the workpiece, leading to non-uniform deformation of the workpiece.

Description

Technical Field

[0001] This invention belongs to the field of hot stamping forming technology of high-strength steel plates, and in particular to a hot stamping forming device for high-strength steel plates and its usage method. Background Technology

[0002] High-strength steel plates are commonly used in aerospace, precision aluminum alloy molds, high-speed rail axle boxes, and marine diesel engines. High-strength steel plates are special plates that have significantly higher yield strength and tensile strength than ordinary steel, obtained through specific processing techniques and composition design.

[0003] The high-strength steel plate hot stamping forming device is a special manufacturing equipment that integrates high-temperature heating, plastic forming and rapid quenching. It is specifically designed to address the problems of high-strength steel plates (especially high-strength steel with tensile strength ≥1500MPa) being difficult to form at room temperature and having large springback. Through a precisely controlled thermo-mechanical coupling process, it can achieve high-precision forming and strengthening of complex parts.

[0004] During high-temperature forming, the steel plate is in the austenitic state (face-centered cubic structure) with good plasticity. After quenching, it transforms into martensite with a body-centered cubic structure, increasing its hardness to over HV500. Its yield strength is 3-5 times higher than the original state, forcing the workpiece to produce a wedge-shaped locking effect. At this time, a servo motor is generally used to drive the ejector pin to complete the ejection of the formed workpiece. However, although the yield strength of martensite is increased by 3-5 times after quenching, its plasticity and toughness decrease sharply, making it extremely sensitive to local stress concentration. If a traditional direct-drive ejector pin is used to eject the formed workpiece, if the pressure is not applied synchronously to the entire contact surface, local stress will be generated in the weak parts of the workpiece, resulting in non-uniform deformation of the workpiece.

[0005] The purpose of this invention is to provide a hot stamping forming apparatus for high-strength steel plates and its method of use, so as to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a hot stamping forming apparatus for high-strength steel plates and its method of use, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a hot stamping forming device for high-strength steel plates and its method of use, comprising a worktable, a support arm provided at the upper end of the worktable, a hydraulic telescopic rod provided on the side of the support arm corresponding to the worktable, and two sets of moving rods and an upper mold respectively provided at the telescopic end of the hydraulic telescopic rod from top to bottom, wherein the upper mold is higher than the ends of the two sets of moving rods; The workbench has a placement slot at its upper end, a base is placed in the placement slot, and a lower mold is placed on the upper end of the base, with the lower mold corresponding to the upper mold. The placement slot is provided with multiple symmetrical electric telescopic rods, and the telescopic end of each electric telescopic rod is provided with a top plate. The top plate is symmetrically provided with two racks on the same side. The workbench is located in the placement slot and is equipped with multiple sets of vibration mechanisms. Two sets of moving mechanisms are symmetrically arranged at the upper end of the workbench, and each set of moving mechanisms is equipped with a rolling mechanism. As the hydraulic telescopic rod extends, it drives two sets of moving rods and the upper mold to move to the lower mold. As the two sets of moving rods move downward, they drive two sets of moving mechanisms to move laterally away from the lower mold. The lateral movement of the two sets of moving mechanisms drives two sets of rolling mechanisms to disengage from the side surface of the lower mold. The combination of the upper mold and the lower mold will press and shape the workpiece on the lower mold. The retraction of the hydraulic telescopic rod will drive the two sets of moving rods and the upper mold to move upward. When the two sets of moving rods are disengaged from the two sets of moving mechanisms, the two sets of moving mechanisms complete the lateral reset movement. The lateral reset movement of the two sets of moving mechanisms drives the two sets of rolling mechanisms to conform to the surface of the molded workpiece. Each of the electric telescopic rods extends synchronously, driving the top plate and two sets of racks to move upward. When the two sets of racks move upward, they mesh with the two sets of rolling mechanisms respectively, and drive the two sets of rolling mechanisms to conform to the surface of the formed workpiece to complete rotation. When the top plate moves upward and contacts each vibration mechanism, it will drive each vibration mechanism to contract and complete energy storage. After the top plate disengages from each vibration mechanism, each vibration mechanism extends and impacts the base. After the top plate moves upward and contacts the formed workpiece, it completes the ejection of the formed workpiece. Each of the electric telescopic rods retracts simultaneously, causing the top plate and two sets of racks to move downwards. At the same time, the top plate disengages from the formed workpiece. The downward movement of the two sets of racks causes the two sets of rolling mechanisms to rotate. After the two sets of racks disengage from the two sets of rolling mechanisms, the two sets of rolling mechanisms stop rotating. The top plate moves downwards and completely disengages from each set of vibration mechanisms after the formed workpiece is ejected, thus completing the reset.

[0008] Furthermore, each set of vibration mechanisms includes a support plate, a vibration plate, and a first spring. The worktable is located in the placement slot and is provided with multiple support plates. A vibration plate is slidably arranged in each support plate. Each vibration plate is connected to its respective support plate by multiple first springs, which facilitates the reduction of friction between the molded workpiece and the lower mold through vibration.

[0009] Furthermore, the upper and lower surfaces of each set of vibrating plates are smooth inclined surfaces, which facilitates smoother movement of each vibrating plate into the support plate.

[0010] Furthermore, each set of the moving mechanism includes a connecting plate, a sliding plate, a second spring, and a moving plate. Two sets of connecting plates are symmetrically arranged on the upper end of the worktable. Sliding plates are slidably arranged inside both sets of connecting plates. Both sets of sliding plates are connected to the connecting plates by multiple second springs. Moving plates corresponding to the two sets of moving rods are arranged on both sides of the two sets of sliding plates, which facilitates the control of the lateral movement of the two sets of rolling mechanisms.

[0011] Furthermore, both sets of moving rods that move downwards will contact the corresponding moving plates, and the surfaces of both sets of moving rods that contact the corresponding moving plates are smooth curved. The upper and lower surfaces of each set of sliding plates are smooth curved surfaces, which facilitates the movement of the two sets of moving plates when the two sets of moving rods are in motion.

[0012] Furthermore, each set of the rolling mechanism includes a support frame, a rotating shaft, rollers, and gears. The ends of the two sets of sliding plates that are close to each other are provided with support frames. The two sets of support frames are provided with rotating shafts. The two sets of rotating shafts are provided with multiple rollers. The same end of the two sets of rotating shafts is provided with gears. The two sets of racks that move upward will mesh with the corresponding gears, so that the forming workpiece can be moved upward by the friction force generated by rolling.

[0013] Furthermore, the combination of the upper and lower molds will press and shape the workpiece on the lower mold, making it easier to press and shape the workpiece on the lower mold.

[0014] Furthermore, it includes the following steps: S1: First, the hydraulic telescopic rod extends, causing the two sets of moving rods and the upper mold to move downwards.

[0015] S2: When the two sets of moving rods move downwards and contact the corresponding moving plates, the two sets of moving rods will move the two sets of sliding plates into their respective connecting plates through the moving plates and compress each of the connected second springs.

[0016] S3: When the two sets of slide plates move into their respective connecting plates, they will drive the support frames connected to them to move laterally away from the lower mold. When the two sets of support frames move laterally, the working shaft and each roller on the shaft will move laterally and separate from the surface of the lower mold. At the same time, the laterally moving slide plates will cause the connected gears to move synchronously.

[0017] S4: When the upper mold and lower mold are combined, the workpiece on the lower mold will be pressed and formed. After the workpiece is formed, the upper mold and the two sets of moving rods will move upward by the hydraulic telescopic rod contraction. When the two sets of moving rods move upward, they will disengage from the two sets of moving plates. At this time, each compressed second spring will cause the connected slide plate to move laterally to reset through the elasticity.

[0018] S5: When the two sets of slides move laterally to reset, the support frame, shaft, each roller and gear connected to each other will move to reset. At this time, each roller will be in contact with the surface of the composite workpiece. S6: Next, each electric telescopic rod extends synchronously and the top plate moves upward. When the top plate moves upward, it contacts each vibrating plate and moves each vibrating plate into the support plate. At the same time, when each vibrating plate moves into the support plate, it compresses each connected first spring. When the top plate disengages from each vibrating plate, each compressed first spring will instantly reset the vibrating plate through its elasticity. After the vibrating plate resets instantly, it will impact the base. The impact of each vibrating plate on the base will cause the base to vibrate. At this time, the vibration will be transmitted through the base to the lower mold, and then from the lower mold to the formed workpiece.

[0019] S7: When the top plate continues to move upward, it will cause the two sets of racks to move upward and mesh with the two sets of gears. At the same time, the two sets of gears will rotate. When the two sets of gears rotate, the two sets of rotating shafts will rotate synchronously. When the two sets of rotating shafts rotate, each roller will rotate synchronously. At this time, each roller will be in contact with the surface of the molded workpiece and eject the molded workpiece on the lower mold through the friction generated by the rotation.

[0020] S8: Next, the top plate will continue to move upward until it contacts the formed workpiece. At this time, the mechanically moving top plate will eject the formed workpiece.

[0021] S9: After the top plate ejects the formed workpiece, each electric telescopic rod retracts, causing the top plate to move downwards until it resets. When the top plate moves downwards and contacts each of the support plates, it will squeeze the vibrating plate into the support plate and squeeze each connected first spring. When the top plate disengages from the vibrating plate, each first spring will push the vibrating plate towards the base through its elasticity. When the top plate moves downwards, it will cause both sets of racks to move downwards simultaneously until the top plate resets. At this time, the two sets of gears will also reset.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention utilizes multiple sets of vibration mechanisms mounted on a worktable. After the top plate moves downwards and contacts each vibration plate, each top plate moves each vibration plate inwards towards the support plate, simultaneously compressing each connected first spring. When the top plate detaches from the vibration plate, each first spring, through its resilience, instantly pushes the vibration plate towards the base. The vibration generated when each vibration plate impacts the base is transmitted through the base to the lower mold, and then from the lower mold to the formed workpiece. This achieves the goal of disturbing the static friction state of the interface through high-frequency, low-amplitude vibration energy, reducing the effective friction coefficient between the formed workpiece and the lower mold. This solves the problem in the prior art where, if a traditional direct-drive ejector is used to eject the formed workpiece, and synchronous pressure is not applied to the entire contact surface, localized stress will occur in the weak parts of the workpiece, leading to non-uniform deformation.

[0023] 2. This invention utilizes two sets of racks mounted on the top plate, two sets of moving mechanisms mounted on both sides of the worktable, and rolling mechanisms mounted on two sets of vibrating plates. When the top plate moves upward, the two sets of racks move upward and mesh with the two sets of gears, causing the two sets of gears to rotate. When the two sets of gears rotate, the two sets of rotating shafts rotate synchronously. When the two sets of rotating shafts rotate, each roller rotates synchronously. At this time, each roller will come into contact with the surface of the molded workpiece and push the molded workpiece out of the lower mold through the friction generated by the rotation. This achieves the upward movement of the molded workpiece through the rolling friction of each roller, effectively avoiding the problem of workpiece deformation caused by the top plate pushing the molded workpiece out. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the lower mold in this invention; Figure 3 This is a cross-sectional structural diagram of the workbench in this invention; Figure 4 This is a cross-sectional structural schematic diagram of the support plate in this invention; Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A; Figure 6 This is a cross-sectional structural diagram of the connecting plate in this invention.

[0026] Explanation of reference numerals in the attached figures: In the picture: 1. Workbench; 2. Support arm; 3. Hydraulic telescopic rod; 4. Moving rod; 5. Upper mold; 6. Placement slot; 7. Base; 8. Lower mold; 9. Electric telescopic rod; 10. Top plate; 11. Vibration mechanism; 1101. Support plate; 1102. Vibration plate; 1103. First spring; 12. Rack; 13. Moving mechanism; 1301. Connecting plate; 1302. Slide plate; 1303. Second spring; 1304. Moving plate; 14. Rolling mechanism; 1401. Support frame; 1402. Rotating shaft; 1403. Roller; 1404. Gear. Detailed Implementation

[0027] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0028] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this invention, and are explained here together.

[0029] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0030] Please see Figures 1 to 6 As shown, the present invention provides a high-strength steel plate hot stamping forming device and its usage method, including a workbench 1, which is used to ensure the stability of the overall operation. A support arm 2 is provided at the upper end of the workbench 1, and a hydraulic telescopic rod 3 is provided on the side of the support arm 2 corresponding to the workbench 1. It is used to control the vertical reciprocating movement of the upper mold 5 and two sets of moving rods 4. The telescopic end of the hydraulic telescopic rod 3 is provided with two sets of moving rods 4 and the upper mold 5 from top to bottom. The upper mold 5 is higher than the ends of the two sets of moving rods 4, which is used to ensure that the two sets of moving rods 4 can contact the two sets of moving plates 1304 first. Among them, the upper end of the workbench 1 is provided with a placement groove 6, the placement groove 6 is provided with a base 7, the upper end of the base 7 is provided with a lower mold 8, and the lower mold 8 corresponds to the upper mold 5. Multiple symmetrical electric telescopic rods 9 are installed in the placement slot 6, which are used to control the vertical reciprocating movement of the top plate 10 and the two sets of racks 12. The telescopic end of each electric telescopic rod 9 is provided with the top plate 10, and the top plate 10 is symmetrically provided with two racks 12 on the same side. The workbench 1 is located in the placement slot 6 and is equipped with multiple sets of vibration mechanisms 11. Two sets of moving mechanisms 13 are symmetrically arranged on the upper end of the workbench 1, and rolling mechanisms 14 are provided on both sets of moving mechanisms 13. As the hydraulic telescopic rod 3 extends, it drives the two sets of moving rods 4 and the upper mold 5 to move to the lower mold 8. As the two sets of moving rods 4 move downward, they drive the two sets of moving mechanisms 13 to move laterally away from the lower mold 8. The lateral movement of the two sets of moving mechanisms 13 will drive the two sets of rolling mechanisms 14 to disengage from the side surface of the lower mold 8. The combination of the upper mold 5 and the lower mold 8 will complete the pressing and forming of the workpiece on the lower mold 8. When the hydraulic telescopic rod 3 retracts, it will drive the two sets of moving rods 4 and the upper mold 5 to move upward. When the two sets of moving rods 4 are disengaged from the two sets of moving mechanisms 13, the two sets of moving mechanisms 13 complete the lateral reset movement. The lateral reset movement of the two sets of moving mechanisms 13 drives the two sets of rolling mechanisms 14 to adhere to the surface of the molded workpiece. Each electric telescopic rod 9 extends synchronously, driving the top plate 10 and two sets of racks 12 to move upward. When the two sets of racks 12 move upward, they mesh with the two sets of rolling mechanisms 14 respectively, and drive the two sets of rolling mechanisms 14 to conform to the surface of the molded workpiece to complete rotation. When the top plate 10 moves upward and contacts each vibration mechanism 11, it will drive each vibration mechanism 11 to contract and complete energy storage. After the top plate 10 disengages from each vibration mechanism 11, each vibration mechanism 11 extends and impacts the base 7. After the top plate 10 moves upward and contacts the molded workpiece, it completes the ejection of the molded workpiece. It is used to achieve the following: after the top plate 10 moves downward and contacts each vibrating plate 1102, each top plate 10 will move each vibrating plate 1102 into the support plate 1101, and at the same time, it will squeeze each connected first spring 1103. When the top plate 10 is separated from the vibrating plate 1102, each first spring 1103 will push the vibrating plate 1102 towards the base 7 instantly through the elasticity. When each vibrating plate 1102 hits the base 7, the vibration generated will be transmitted to the lower mold 8 through the base 7, and then to the forming workpiece through the lower mold 8. In this way, the static friction state of the interface is disturbed by high frequency low amplitude vibration energy, and the effective friction coefficient between the forming workpiece and the lower mold 8 is reduced, thereby avoiding the problem of workpiece deformation caused by the top plate 10 ejecting the forming workpiece. Each electric telescopic rod 9 retracts simultaneously, causing the top plate 10 and two sets of racks 12 to move downwards. At the same time, the top plate 10 disengages from the formed workpiece. The downward movement of the two sets of racks 12 causes the two sets of rolling mechanisms 14 to rotate. After the two sets of racks 12 disengage from the two sets of rolling mechanisms 14, the two sets of rolling mechanisms 14 stop rotating. The top plate 10 moves downwards and completely disengages from each set of vibration mechanisms 11 after the formed workpiece is ejected, thus completing the reset. It is used to achieve the following: when the top plate 10 moves upward, it causes the two sets of racks 12 to move upward and mesh with the two sets of gears 1404. At the same time, the two sets of gears 1404 rotate. When the two sets of gears 1404 rotate, the two sets of rotating shafts 1402 rotate synchronously. When the two sets of rotating shafts 1402 rotate, each roller 1403 rotates synchronously. At this time, each roller 1403 will be in contact with the surface of the molded workpiece and push the molded workpiece on the lower mold 8 through the friction generated by the rotation. In this way, the molded workpiece is moved upward by the rolling friction of each roller 1403, which can effectively avoid the problem of workpiece deformation when the top plate 10 pushes the molded workpiece out.

[0031] Each vibration mechanism 11 includes a support plate 1101, a vibration plate 1102, and a first spring 1103. The worktable 1 is located in the placement slot 6 and is provided with multiple support plates 1101. Each support plate 1101 is slidably provided with a vibration plate 1102, which is used to transmit the generated vibration to the forming workpiece by instantaneously impacting the base 7. Each vibration plate 1102 is connected to the support plate 1101 by multiple first springs 1103, which is used to store energy by compressing each first spring 1103 to the vibration plate 1102. The upper and lower surfaces of each set of vibrating plates 1102 are smooth inclined surfaces, which are used to reduce friction when the top plate 10 presses each vibrating plate 1102, so as to push each vibrating plate 1102 into the support plate 1101 more smoothly.

[0032] Each set of moving mechanisms 13 includes a connecting plate 1301, a sliding plate 1302, a second spring 1303, and a moving plate 1304. Two sets of connecting plates 1301 are symmetrically arranged on the upper end of the worktable 1. Sliding plates 1302 are slidably arranged in both sets of connecting plates 1301. Both sets of sliding plates 1302 are connected to the connecting plates 1301 by multiple second springs 1303. This is used to realize that the sliding plate 1302 can be reset by the elasticity of each second spring 1303. And both sides of the two sets of sliding plates 1302 are provided with moving plates 1304 corresponding to the two sets of moving rods 4. Both sets of downward-moving rods 4 will contact the corresponding moving plates 1304. At the same time, the surfaces of the two sets of moving rods 4 in contact with the corresponding moving plates 1304 are smooth curved. The upper and lower surfaces of each set of sliding plates 1302 are smooth curved surfaces. This is to reduce the friction generated when the two sets of moving rods 4 contact the two sets of moving plates 1304, so as to achieve smoother pushing of the two sets of moving plates 1304.

[0033] Each set of rolling mechanisms 14 includes a support frame 1401, a rotating shaft 1402, rollers 1403, and gears 1404. The two sets of sliding plates 1302 are each provided with a support frame 1401 at their respective ends. The two sets of support frames 1401 are each provided with a rotating shaft 1402. The two sets of rotating shafts 1402 are each provided with multiple rollers 1403, which are used to generate friction through the rotation of each roller 1403, thereby pushing the formed workpiece upward. The same end of the two sets of rotating shafts 1402 is provided with a gear 1404, which is used to control the rotation of each roller 1403. The two sets of racks 12 that move upward will mesh with the corresponding gears 1404, which is used to control the rotation of the gears 1404 through the gears 1404.

[0034] The combination of the upper mold 5 and the lower mold 8 will press and shape the workpiece on the lower mold 8.

[0035] Includes the following steps: S1: First, the hydraulic telescopic rod 3 extends, causing the two sets of moving rods 4 and the upper mold 5 to move downwards.

[0036] S2: When the two sets of moving rods 4 move downwards and contact the corresponding moving plate 1304, the two sets of moving rods 4 will cause the two sets of sliding plates 1302 to move into their respective connecting plates 1301 through the moving plate 1304 and compress each of the connected second springs 1303.

[0037] S3: When the two sets of slide plates 1302 move into their respective connecting plates 1301, they will drive the support frames 1401 connected to them to move laterally away from the lower mold 8. When the two sets of support frames 1401 move laterally, the working connected shaft 1402 and each roller 1403 on the shaft 1402 will move laterally and disengage from the surface of the lower mold 8. At the same time, the laterally moving slide plates 1302 will cause the connected gears 1404 to move synchronously.

[0038] S4: When the upper mold 5 and the lower mold are combined, the workpiece on the lower mold 8 will be pressed and formed. After the workpiece is formed, the upper mold 5 and the two sets of moving rods 4 will move upward by the hydraulic telescopic rod 3. When the two sets of moving rods move upward, they will disengage from the two sets of moving plates 1304. At this time, each compressed second spring 1303 will cause the connected slide plate 1302 to move laterally to reset through the elasticity.

[0039] S5: When the two sets of slide plates 1302 move laterally to reset, the support frame 1401, the shaft 1402, each roller 1403 and the gear 1404 connected to each other will move to reset. At this time, each roller 1403 will be in contact with the surface of the composite workpiece. S6: Next, each electric telescopic rod 9 extends synchronously and the top plate 10 moves upward. When the top plate 10 moves upward, it contacts each vibrating plate 1102 and moves each vibrating plate 1102 into the support plate 1101. At the same time, when each vibrating plate 1102 moves into the support plate 1101, it compresses each connected first spring 1103. When the top plate 10 disengages from each vibrating plate 1102, each compressed first spring 1103 will instantly reset the vibrating plate 1102 through its elasticity. After the vibrating plate 1102 resets instantly, it will impact the base 7. The impact of each vibrating plate 1102 on the base 7 will cause the base 7 to vibrate. At this time, the vibration will be transmitted through the base 7 to the lower mold 8, and then from the lower mold 8 to the formed workpiece.

[0040] S7: When the top plate 10 continues to move upward, it will cause the two sets of racks 12 to move upward and mesh with the two sets of gears 1404. At the same time, the two sets of gears 1404 will rotate. When the two sets of gears 1404 rotate, the two sets of rotating shafts 1402 will rotate synchronously. When the two sets of rotating shafts 1402 rotate, each roller 1403 will rotate synchronously. At this time, each roller 1403 will be in contact with the surface of the molded workpiece and eject the molded workpiece on the lower mold 8 through the friction generated by the rotation.

[0041] S8: Next, the top plate 10 will continue to move upward until it contacts the formed workpiece. At this time, the mechanically moving top plate 10 will eject the formed workpiece.

[0042] S9: After the top plate 10 ejects the formed workpiece, each electric telescopic rod 9 retracts, causing the top plate 10 to move downwards until it resets. When the top plate 10 moves downwards and contacts each of the support plates, it will press the vibrating plate 1102 into the support plate 1101 and simultaneously press each of the connected first springs 1103. When the top plate 10 disengages from the vibrating plate 1102, each of the first springs 1103 will push the vibrating plate 1102 towards the base 7 through its elasticity. When the top plate 10 moves downwards, it will cause the two sets of racks 12 to move downwards simultaneously until the top plate 10 resets. At this time, the two sets of gears 1404 will also reset.

[0043] Working principle: When it is necessary to avoid deformation of the molded workpiece caused by the top plate 10 demolding, the hydraulic telescopic rod 3 first extends so that the two sets of moving rods 4 contact the corresponding moving plate 1304. At this time, the two sets of moving rods 4 will move the two sets of sliding plates 1302 into their respective connecting plates 1301 through the moving plate 1304 and compress each connected second spring 1303. When the two sets of slide plates 1302 move into their respective connecting plates 1301, they will drive the support frames 1401 connected to them to move laterally away from the lower mold 8. When the two sets of support frames 1401 move laterally, the working connected rotating shaft 1402 and each roller 1403 on the rotating shaft 1402 will move laterally and disengage from the surface of the lower mold 8. At the same time, the laterally moving slide plates 1302 will cause the connected gears 1404 to move synchronously. When the upper mold 5 and the lower mold are combined, the workpiece on the lower mold 8 will be pressed and formed. After the workpiece is formed, the upper mold 5 and the two sets of moving rods 4 will move upward by the hydraulic telescopic rod 3. When the two sets of moving rods move upward, they will disengage from the two sets of moving plates 1304. At this time, each compressed second spring 1303 will cause the connected slide plate 1302 to move laterally through the elasticity. When the two sets of sliding plates 1302 move laterally to reset, the support frame 1401, rotating shaft 1402, each roller 1403 and gear 1404 connected to each other will move to reset. At this time, each roller 1403 will be in contact with the surface of the composite workpiece. Next, each electric telescopic rod 9 is extended synchronously and the top plate 10 is moved upward. When the top plate 10 moves upward, it will contact each vibrating plate 1102 and move each vibrating plate 1102 into the support plate 1101. At the same time, when each vibrating plate 1102 moves into the support plate 1101, it will compress each connected first spring 1103. When the top plate 10 is separated from each vibrating plate 1102, the compressed first spring 1103 will instantly reset the vibrating plate 1102 through its elasticity. After the vibrating plate 1102 is reset instantly, it will impact the base 7. After each vibrating plate 1102 impacts the base 7, the base 7 will vibrate. At this time, the vibration will be transmitted to the lower mold 8 through the base 7, and then transmitted to the formed workpiece by the lower mold 8. When the top plate 10 continues to move upward, it will cause the two sets of racks 12 to move upward and mesh with the two sets of gears 1404. At the same time, the two sets of gears 1404 will rotate. When the two sets of gears 1404 rotate, the two sets of rotating shafts 1402 will rotate synchronously. When the two sets of rotating shafts 1402 rotate, each roller 1403 will rotate synchronously. At this time, each roller 1403 will be in contact with the surface of the molded workpiece and eject the molded workpiece on the lower mold 8 through the friction generated by the rotation. After the top plate 10 ejects the formed workpiece, each electric telescopic rod 9 retracts, causing the top plate 10 to move downwards until it resets. In this way, the vibrating plate 1102 is squeezed into the support plate 1101. At the same time, when the top plate 10 disengages from the vibrating plate 1102, each first spring 1103 will push the vibrating plate 1102 towards the base 7 through its elasticity until the top plate 10 resets. At this time, the two sets of gears 1404 will also reset.

[0044] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot stamping forming apparatus for high-strength steel plates, characterized in that: Includes a workbench (1), with a support arm (2) at the upper end of the workbench (1), and a hydraulic telescopic rod (3) on one side of the support arm (2) corresponding to the workbench (1). The telescopic end of the hydraulic telescopic rod (3) is provided with two sets of moving rods (4) and an upper mold (5) from top to bottom. The upper mold (5) is higher than the ends of the two sets of moving rods (4). The workbench (1) has a placement slot (6) at its upper end, a base (7) is provided in the placement slot (6), and a lower mold (8) is provided at the upper end of the base (7). The lower mold (8) corresponds to the upper mold (5). The placement slot (6) is provided with a plurality of symmetrical electric telescopic rods (9), and the telescopic end of each electric telescopic rod (9) is provided with a top plate (10), and the top plate (10) is symmetrically provided with two racks (12) on the same side. The workbench (1) is located in the placement slot (6) and is equipped with multiple sets of vibration mechanisms (11). Two sets of moving mechanisms (13) are symmetrically arranged on the upper end of the workbench (1), and rolling mechanisms (14) are provided on both sets of moving mechanisms (13). As the hydraulic telescopic rod (3) extends, it drives the two sets of moving rods (4) and the upper mold (5) to move to the lower mold (8). As the two sets of moving rods (4) move downward, they drive the two sets of moving mechanisms (13) to move laterally away from the lower mold (8). The lateral movement of the two sets of moving mechanisms (13) drives the two sets of rolling mechanisms (14) to detach from the side surface of the lower mold (8). The combination of the upper mold (5) and the lower mold (8) will press and shape the workpiece on the lower mold (8). The retraction of the hydraulic telescopic rod (3) will drive the two sets of moving rods (4) and the upper mold (5) to move upward. When the two sets of moving rods (4) are disengaged from the two sets of moving mechanisms (13), the two sets of moving mechanisms (13) complete the lateral reset movement. The lateral reset movement of the two sets of moving mechanisms (13) drives the two sets of rolling mechanisms (14) to adhere to the surface of the forming workpiece. Each of the electric telescopic rods (9) extends synchronously, driving the top plate (10) and two sets of racks (12) to move upward. When the two sets of racks (12) move upward, they mesh with the two sets of rolling mechanisms (14) respectively, and drive the two sets of rolling mechanisms (14) to fit against the surface of the molded workpiece to complete the rotation. When the top plate (10) moves upward and contacts each vibration mechanism (11), it will drive each vibration mechanism (11) to contract and complete the energy storage. After the top plate (10) disengages from each vibration mechanism (11), each vibration mechanism (11) extends and impacts the base (7). After the top plate (10) moves upward and contacts the molded workpiece, it completes the ejection of the molded workpiece. Each of the electric telescopic rods (9) retracts simultaneously, causing the top plate (10) and two sets of racks (12) to move downwards. At the same time, the top plate (10) disengages from the molded workpiece. The downward movement of the two sets of racks (12) causes the two sets of rolling mechanisms (14) to rotate. After the two sets of racks (12) disengage from the two sets of rolling mechanisms (14), the two sets of rolling mechanisms (14) stop rotating. The top plate (10) completes its reset when it moves downwards and completely disengages from each set of vibration mechanisms (11) after the molded workpiece is ejected.

2. The high-strength steel plate hot stamping forming device according to claim 1, characterized in that: Each vibration mechanism (11) includes a support plate (1101), a vibration plate (1102), and a first spring (1103). The worktable (1) is located in the placement slot (6) and is provided with multiple support plates (1101). Each support plate (1101) is slidably provided with a vibration plate (1102). Each vibration plate (1102) is connected to the support plate (1101) by multiple first springs (1103).

3. The high-strength steel plate hot stamping forming device according to claim 2, characterized in that: The upper and lower surfaces of each set of vibrating plates (1102) are smooth inclined surfaces.

4. The high-strength steel plate hot stamping forming device according to claim 1, characterized in that: Each set of moving mechanisms (13) includes a connecting plate (1301), a sliding plate (1302), a second spring (1303), and a moving plate (1304). Two sets of connecting plates (1301) are symmetrically arranged on the upper end of the workbench (1). Sliding plates (1302) are slidably arranged in both sets of connecting plates (1301). Both sets of sliding plates (1302) are connected to the connecting plates (1301) by multiple second springs (1303). Moving plates (1304) corresponding to the two sets of moving rods (4) are arranged on both sides of the two sets of sliding plates (1302).

5. The high-strength steel plate hot stamping forming device according to claim 4, characterized in that: Both sets of moving rods (4) that move downwards will come into contact with the corresponding moving plate (1304), and the surfaces of both sets of moving rods (4) that come into contact with the corresponding moving plate (1304) are all smooth curved. The upper and lower surfaces of each set of sliding plates (1302) are smooth curved surfaces.

6. The high-strength steel plate hot stamping forming device according to claim 5, characterized in that: Each set of rolling mechanisms (14) includes a support frame (1401), a rotating shaft (1402), rollers (1403) and gears (1404). The two sets of sliding plates (1302) are provided with a support frame (1401) at their respective ends. The two sets of support frames (1401) are provided with a rotating shaft (1402). The two sets of rotating shafts (1402) are provided with multiple rollers (1403). The same end of the two sets of rotating shafts (1402) is provided with a gear (1404). The two sets of racks (12) that move upward will mesh with the corresponding gears (1404).

7. The high-strength steel plate hot stamping forming device according to claim 1, characterized in that: The combination of the upper mold (5) and the lower mold (8) will press and shape the workpiece on the lower mold (8).

8. The high-strength steel plate hot stamping forming apparatus and its method of use according to any one of claims 1-7, characterized in that, Includes the following steps: S1: First, the hydraulic telescopic rod (3) extends, causing the two sets of moving rods (4) and the upper mold (5) to move downward. S2: When the two sets of moving rods (4) move downward and contact the corresponding moving plate (1304), the two sets of moving rods (4) will cause the two sets of sliding plates (1302) to move into their respective connecting plates (1301) through the moving plates (1304) and compress each of the connected second springs (1303). S3: When the two sets of sliding plates (1302) move into their respective connecting plates (1301), they will drive the connected support frames (1401) to move laterally away from the lower mold (8). When the two sets of support frames (1401) move laterally, they will cause the working connected rotating shaft (1402) and each roller (1403) on the rotating shaft (1402) to move laterally and disengage from the surface of the lower mold (8). At the same time, the laterally moving sliding plate (1302) will cause the connected gear (1404) to move synchronously. S4: When the upper mold (5) and the lower mold are combined, the workpiece on the lower mold (8) will be pressed and formed. After the workpiece is formed, the upper mold (5) and the two sets of moving rods (4) will move upward by the hydraulic telescopic rod (3) contracting. When the two sets of moving rods move upward, they will disengage from the two sets of moving plates (1304). At this time, each compressed second spring (1303) will cause the connected slide plate (1302) to move laterally through the elasticity. S5: After the two sets of sliding plates (1302) move laterally to reset, the support frame (1401), the shaft (1402), each roller (1403), and the gear (1404) connected to each other will move to reset. At this time, each roller (1403) will be in contact with the surface of the composite workpiece; S6: Next, each electric telescopic rod (9) will extend synchronously and the top plate (10) will move upward. When the top plate (10) moves upward, it will contact each vibrating plate (1102) and cause each vibrating plate (1102) to move into the support plate (1101) where it is located. At the same time, each vibrating plate (1104) will move inward. 2) When moving into the support plate (1101), each connected first spring (1103) will be compressed. When the top plate (10) is separated from each vibrating plate (1102), each compressed first spring (1103) will instantly reset the vibrating plate (1102) through elasticity. After the vibrating plate (1102) is instantly reset, it will impact the base (7). After each vibrating plate (1102) impacts the base (7), the base (7) will vibrate. At this time, the vibration will be transmitted to the lower mold (8) through the base (7), and then transmitted to the formed workpiece by the lower mold (8).S7: When the top plate (10) continues to move upward, it will cause the two sets of racks (12) to move upward and mesh with the two sets of gears (1404). At the same time, the two sets of gears (1404) will rotate. When the two sets of gears (1404) rotate, the two sets of rotating shafts (1402) will rotate synchronously. When the two sets of rotating shafts (1402) rotate, each roller (1403) will rotate synchronously. At this time, each roller (1403) will be in contact with the surface of the molded workpiece and eject the molded workpiece on the lower mold (8) through the friction generated by the rotation. S8: Next, the top plate (10) will continue to move upward until it contacts the molded workpiece. At this time, the mechanically moving top plate (10) will eject the molded workpiece. S9: After the top plate (10) ejects the formed workpiece, each electric telescopic rod (9) retracts and drives the top plate (10) to move downward until it is reset. When the top plate (10) moves downward and contacts each one, it will squeeze the vibrating plate (1102) into the support plate (1101) and squeeze each connected first spring (1103). When the top plate (10) is separated from the vibrating plate (1102), each first spring (1103) will push the vibrating plate (1102) towards the base (7) through its elasticity. When the top plate (10) moves downward, it will cause the two sets of racks (12) to move downward at the same time until the top plate (10) is reset. At this time, the two sets of gears (1404) will also be reset.

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