Galvanized steel sheet hot stamping apparatus and method of use

Abstract

The present application relates to the technical field of galvanized steel plate, and particularly relates to a galvanized steel plate hot stamping forming equipment and a use method thereof, which comprises a workbench, a movable heating cover is arranged in the workbench, a heating switch is arranged at the end of the heating cover, a gas cylinder is arranged on the inner side wall of the workbench, a connecting seat is arranged at the output end of the gas cylinder, a pressing block assembly is coaxially arranged on the outer side wall of the connecting seat, and an upper die is arranged below the connecting seat, a plurality of chamfer dies are arranged at the end of the upper die. The chamfer die is arranged, the gas cylinder drives the upper die to move through the connecting seat, the upper die is in contact with the galvanized steel plate and completes the preliminary stamping, then the fixing rod continues to move downward, the fixing rod drives the chamfer die to extend into the stamping groove, and the chamfer processing of the edges and corners of the galvanized steel plate is completed, so that the main body forming and the edge chamfer processing can be completed in one stamping process, the operation of multiple stamping is reduced, and the production efficiency during subsequent stamping is improved.

Description

Technical Field

[0001] This invention relates to the field of galvanized steel sheet technology, and in particular to a hot stamping forming equipment and method for using galvanized steel sheet. Background Technology

[0002] The hot stamping forming equipment for galvanized steel sheets is an integrated manufacturing system specifically designed for hot stamping forming of galvanized steel sheets. The stamping forming equipment heats the galvanized steel sheet to the austenitizing temperature and then performs high-speed stamping forming in a closed mold.

[0003] Due to the diverse application requirements of galvanized steel sheets during the production process, irregular shapes need to be stamped. Traditional stamping equipment is difficult to meet the processing stability of irregular galvanized steel sheets when performing such operations, which affects the work efficiency of subsequent processing of irregular galvanized steel sheets. Traditional stamping equipment typically uses a single stamping process to complete the forming operation of the workpiece. When faced with workpieces with irregular shapes or complex contours, it is often difficult to complete the chamfering of the edges in a single stamping. Multiple chamfers need to be applied to the workpiece. A single stamping cannot cover all the areas to be processed at the same time, resulting in some chamfer structures not being formed or insufficient processing accuracy. Operators usually need to remove the workpiece from the mold after the first stamping and complete the remaining chamfering through a second stamping, which increases the complexity of the production process and reduces the overall production efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that it is difficult to chamfer the edges and corners of galvanized steel sheets in a single stamping process in the prior art, and to propose a hot stamping forming equipment and method for galvanized steel sheets.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A hot stamping forming equipment for galvanized steel sheets includes a worktable, a movable heating cover inside the worktable, a heating switch at the end of the heating cover, a cylinder on the inner side wall of the worktable, a connecting seat at the output end of the cylinder, a pressure block assembly coaxially arranged on the outer side wall of the connecting seat, an upper mold below the connecting seat, multiple chamfering molds at the end of the upper mold, a base and a support on the inner side wall of the worktable, a stamping groove at the end of the support, a lower mold above the stamping groove, a moving ring above the base, a door on the side wall of the worktable, and a collection box inside the worktable.

[0006] Preferably, the inner sidewall of the workbench is provided with an electromagnetic slide rail, the sidewall of the electromagnetic slide rail is provided with an electric slider, and the sidewall of the electric slider is provided with a support plate.

[0007] Preferably, the inner wall of the support plate has a groove, the inner wall of the groove has a threaded rod, the end of the support plate has a drive motor, the output end of the drive motor and the end of the threaded rod are coaxially connected, the outer wall of the threaded rod has a guide block, and the side wall of the guide block is connected to the outer wall of the heating cover.

[0008] Preferably, the pressure block assembly includes a first pressure block, a second pressure block, and a third pressure block, which are connected by a fixing bolt threaded together.

[0009] Preferably, the end of the connecting seat is provided with a plurality of first return springs, and a first telescopic guide rod is coaxially provided inside the first return spring. The end of the connecting seat is provided with a second telescopic guide rod, and the end of the second telescopic guide rod is connected to the end of the upper mold.

[0010] Preferably, the inner wall of the third pressing block is symmetrically provided with fixing blocks, and the outer wall of the upper mold is symmetrically provided with moving rods.

[0011] Preferably, the end of the connecting seat is provided with a plurality of fixing rods, the fixing rods passing through the end of the upper mold, and the end of the fixing rods being connected to the end of the chamfering mold.

[0012] Preferably, the base end is provided with a plurality of second return springs, the second return springs are coaxially provided with a third telescopic guide rod, the end of the third telescopic guide rod is connected to the bottom of the moving ring, the end of the moving ring is provided with a plurality of positioning blocks, and the bottom of the third pressure block is provided with a plurality of positioning grooves.

[0013] Preferably, the support base has symmetrically arranged connecting grooves that are connected to the stamping grooves, and the bottom of the lower mold has symmetrically arranged connecting rods, the other end of which is connected to the bottom of the moving ring.

[0014] A method for using a hot stamping forming equipment for galvanized steel sheets includes the following operating steps: Step S1: First, place the galvanized steel sheet at the end of the support base, aligning the galvanized steel sheet with the lower mold. Activate the electric slider, which moves the support plate on the electromagnetic slide rail. Activate the drive motor, which rotates the threaded rod, causing the guide block to move along the threaded rod through the internal thread. This allows the heating cover to be coaxially fitted onto the base. Activate the heating switch, adjusting the heating cover to a suitable temperature to preheat the galvanized steel sheet, achieving the temperature conditions required for hot stamping. After heating, move the heating cover to both sides to facilitate subsequent stamping of the galvanized steel sheet.

[0015] Step S2: By starting the cylinder, the cylinder output end drives the connecting seat to move downward. The connecting seat drives the fixed block to move through the moving rod, so that the fixed block drives the pressure block assembly to move, so that the pressure block assembly initially fixes the galvanized steel plate to ensure that no displacement occurs during hot stamping. The first pressure block, the second pressure block and the third pressure block are tightly connected by fixing bolts to enhance the uniformity of the clamping force. The positioning block and the positioning groove are adapted to each other to make the moving ring and the third pressure block fit together.

[0016] Step S3: When the cylinder drives the upper mold and galvanized steel sheet to perform the first stamping, the upper mold and galvanized steel sheet are stamped for the first time. Through the cooperation of the first return spring and the first telescopic guide rod, the ends of the upper mold and the lower mold are brought into contact, and the connecting seat drives the fixing rod to move downward. The fixing rod drives the chamfering mold to extend into the stamping groove to perform the second stamping of the galvanized steel sheet, ensuring the stability of the second stamping of the galvanized steel sheet.

[0017] Step S4: The moving ring is squeezed by the third pressure block, causing the moving ring to move the lower mold in the connecting groove via the connecting rod. After squeezing, the cylinder drives the upper mold to move upward. The second return spring and the third telescopic guide rod on the base work together to move the moving ring, which in turn drives the lower mold via the connecting rod. The lower mold then pushes out the stamped galvanized steel sheet, making it easier for subsequent operators to collect the galvanized steel sheet.

[0018] Compared with the prior art, the present invention has the following advantages: 1. This invention uses a chamfering mold. A cylinder drives the upper mold to move through a connecting seat, so that the upper mold contacts the galvanized steel sheet and completes the initial stamping. Then, the fixing rod continues to move downward, and the fixing rod drives the chamfering mold to extend into the stamping groove to chamfer the edges of the galvanized steel sheet. This allows the galvanized steel sheet to complete the main body forming and edge chamfering in one stamping process, reducing the need for multiple stamping operations and improving the production efficiency of subsequent stamping.

[0019] 2. This invention sets up a lower mold, and the pressing block assembly squeezes the moving ring, causing the moving ring to drive the lower mold to move within the connecting groove via the connecting rod. This ensures the alignment of the lower mold and the upper mold during the stamping process. After stamping is completed, the moving ring is driven to move by the second reset spring, and the moving ring drives the lower mold to move via the connecting rod. This causes the lower mold to push the stamped galvanized steel sheet upwards, achieving automatic demolding of the finished product, improving production efficiency and reducing manual intervention. Attached Figure Description

[0020] Figure 1 This is an isometric view of a hot stamping forming equipment for galvanized steel sheets proposed in this invention; Figure 2 This is a sectional side view of the workbench of a hot stamping forming equipment for galvanized steel sheets proposed in this invention. Figure 3 This is a sectional side view of the pressing assembly of a hot stamping forming equipment for galvanized steel sheets according to the present invention. Figure 4 This is a partial schematic diagram A of a hot stamping forming equipment for galvanized steel sheets proposed in this invention; Figure 5 This is a sectional side view of the connecting seat of a hot stamping forming equipment for galvanized steel sheet proposed in this invention; Figure 6 This is a partial schematic diagram (B) of a hot stamping forming equipment for galvanized steel sheets proposed in this invention; Figure 7 This is a sectional side view of the workbench of a hot stamping forming equipment for galvanized steel sheets proposed in this invention. Figure 8 This is a sectional side view of the support base of a hot stamping forming equipment for galvanized steel sheet proposed in this invention; Figure 9 This is a partial schematic diagram (C) of a hot stamping forming equipment for galvanized steel sheets proposed in this invention; Figure 10 This is a sectional side view of the lower die of a hot stamping forming equipment for galvanized steel sheets proposed in this invention. Figure 11 This is a sectional side view of the lower die of a hot stamping forming equipment for galvanized steel sheets proposed in this invention. Figure 12 This is a sectional side view of the base of a hot stamping forming equipment for galvanized steel sheet proposed in this invention.

[0021] In the diagram: 1. Workbench; 2. Box door; 3. Heating cover; 4. Heating switch; 5. Base; 6. Moving ring; 7. Positioning block; 8. Pressing block assembly; 801. First pressing block; 802. Second pressing block; 803. Third pressing block; 804. Fixing bolt; 9. Cylinder; 10. Connecting seat; 11. First telescopic guide rod; 12. First return spring; 13. Fixing block; 14. Moving rod; 15. Upper mold; 16. Second telescopic guide rod; 17. Positioning groove; 18. Fixing rod; 19. Chamfering mold; 20. Second return spring; 21. Third telescopic guide rod; 22. Electromagnetic slide rail; 23. Electric slider; 24. Drive motor; 25. Threaded rod; 26. Guide block; 27. Support plate; 28. Collection box; 29. ​​Support seat; 30. Lower mold; 31. Connecting rod. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Reference Figures 1-12 A hot stamping forming equipment for galvanized steel sheet and its usage method are disclosed. The equipment includes a workbench 1, a movable heating cover 3 inside the workbench 1, a heating switch 4 fixedly installed at the end of the heating cover 3, and the heating switch 4 and the heating cover 3 are electrically connected. Through the cooperation of the heating switch 4 and the heating cover 3, the heating cover 3 can perform uniform preheating treatment on the galvanized steel sheet to ensure that it reaches the temperature conditions suitable for hot stamping.

[0024] like Figure 1 As shown, the electromagnetic slide rail 22 is fixedly installed on the inner side wall of the workbench 1, the electric slider 23 is slidably installed on the side wall of the electromagnetic slide rail 22, and the support plate 27 is fixedly installed on the side wall of the electric slider 23. The electromagnetic slide rail 22 is equipped with an electrical control system. By activating the electrical control system, the electric slider 23 drives the support plate 27 to slide on the electromagnetic slide rail 22. Through the cooperation between the electric slider 23 and the electromagnetic slide rail 22, it is convenient for the electric slider 23 to drive the support plate 27 to move through the electromagnetic slide rail 22. This allows the equipment to flexibly adjust the position of the heating cover 3, which is convenient for the subsequent preheating of the galvanized steel plate.

[0025] like Figure 7 As shown, a groove is provided on the inner side wall of the support plate 27, and the threaded rod 25 is rotatably mounted on the inner side wall of the groove. The drive motor 24 is fixedly mounted on the end of the support plate 27, and the output end of the drive motor 24 is coaxially and fixedly connected to the end of the threaded rod 25. A guide block 26 is provided on the outer side wall of the threaded rod 25, and a threaded hole adapted to the threaded rod 25 is provided in the guide block 26. The guide block 26 and the threaded rod 25 are threadedly connected, and the side wall of the guide block 26 is fixedly connected to the outer side wall of the heating cover 3. Through the mutual cooperation of the guide block 26 and the threaded rod 25, the guide block 26 can move up and down on the outer side wall of the threaded rod 25 through the internal thread, which facilitates the subsequent lifting and lowering of the heating cover 3.

[0026] like Figure 5 As shown, cylinder 9 is fixedly mounted on the inner side wall of workbench 1. A connecting seat 10 is provided at the output end of cylinder 9. A pressure block assembly 8 is coaxially provided on the outer side wall of the connecting seat 10. The pressure block assembly 8 includes a first pressure block 801, a second pressure block 802, and a third pressure block 803. The first pressure block 801, the second pressure block 802, and the third pressure block 803 are connected by a fixing bolt 804. This arrangement ensures that the pressure block assembly 8 maintains a stable connection during operation, while also facilitating disassembly and maintenance.

[0027] It should be noted that the first pressure block 801, the second pressure block 802 and the third pressure block 803 each undertake different functional areas. The tight connection of the fixing bolts 804 effectively enhances the stability of the overall structure and reduces the occurrence of loosening or displacement during the stamping process.

[0028] like Figure 2 As shown, an upper mold 15 is provided below the connecting seat 10. The upper mold 15 is triangular in shape, and the upper mold 15 also has other embodiments. The preferred embodiment is triangular. This arrangement adapts to the stamping requirements of irregularly shaped galvanized steel sheets, thereby improving the accuracy and efficiency of stamping.

[0029] like Figure 4 As shown, multiple first return springs 12 are fixedly mounted at the end of the connecting seat 10. A first telescopic guide rod 11 is coaxially mounted inside the first return spring 12. The first telescopic guide rod 11 is fixedly mounted at the end of the connecting seat 10. The other end of the first telescopic guide rod 11 is connected to the end of the upper mold 15. Through the cooperation of the first return spring 12 and the first telescopic guide rod 11, it is convenient to perform secondary stamping on the galvanized steel sheet in the future, and the stability of the subsequent equipment operation is ensured.

[0030] like Figure 4 As shown, the second telescopic guide rod 16 is fixedly installed at the end of the connecting seat 10. The end of the second telescopic guide rod 16 is fixedly connected to the end of the upper mold 15. Through the cooperation between the second telescopic guide rod and the upper mold 15, the shaking amplitude of the upper mold 15 during the stamping process is effectively reduced, and the finished product effect during subsequent stamping processing is improved.

[0031] like Figure 4 As shown, the fixed block 13 is symmetrically fixed on the inner wall of the third pressure block 803, and the moving rod 14 is symmetrically fixed on the outer wall of the upper mold 15. The bottom of the moving rod 14 is in contact with the end of the fixed block 13. Through the cooperation of the moving rod 14 and the fixed block 13, the upper mold 15 drives the third pressure block 803 to move during the stamping process, ensuring that the pressing force is evenly distributed and reducing the damage to the galvanized layer caused by uneven local force.

[0032] like Figure 6 As shown, the upper mold 15 is provided with multiple chamfering molds 19 at its end. The fixing rod 18 is fixedly installed at the end of the connecting seat 10. The end of the fixing rod 18 passes through the end of the upper mold 15 and is fixedly connected to the end of the chamfering mold 19. Through the cooperation of the fixing rod 18 and the chamfering mold 19, the chamfering mold 19 can act on the corner area of ​​the galvanized steel sheet during the stamping process, reducing the problem of local insufficient processing caused by irregular shape. It should be noted that during the initial stamping of the galvanized steel sheet, when the upper die 15 and the lower die 30 are in contact, the cylinder 9 drives the connecting seat 10 to perform a second stamping. Under the interaction of the first telescopic guide rod 11 and the first return spring 12, the upper die 15 and the lower die 30 are tightly in contact. The connecting seat 10 drives the chamfering die 19 to perform a second stamping of the galvanized steel sheet through the fixing rod 18, so that the corner areas of the galvanized steel sheet are fully processed, ensuring the overall stamping effect in the subsequent process.

[0033] like Figure 7 As shown, the base 5 and the support 29 are fixedly installed on the inner side wall of the workbench 1. The end of the support 29 is provided with a stamping groove, and a lower mold 30 is provided above the stamping groove. A moving ring 6 is provided above the base 5. Multiple second return springs 20 are fixedly installed at the end of the base 5. A third telescopic guide rod 21 is coaxially provided with the second return springs 20. The end of the third telescopic guide rod 21 is fixedly connected to the bottom of the moving ring 6, and the other end of the third telescopic guide rod 21 is fixedly connected to the end of the base 5. Through the cooperation of the second return springs 20 and the third telescopic guide rod 21, the moving ring 6 is reset after stamping. At the same time, the moving ring 6 is squeezed by the pressure block assembly 8, so that the moving ring 6 squeezes the second return spring 20. The moving ring 6 drives the third telescopic guide rod 21 to move, ensuring the stability of the subsequent equipment operation.

[0034] like Figure 1 As shown, multiple positioning blocks 7 are fixedly installed at the end of the moving ring 6, and multiple positioning grooves 17 are opened at the bottom of the third pressing block 803. The positioning blocks 7 and the positioning grooves 17 are adapted to each other. Through the cooperation of the positioning blocks 7 and the positioning grooves 17, a positioning connection is formed between the moving ring 6 and the third pressing block 803, ensuring that the relative position between the two remains stable during the stamping process and reducing the occurrence of offset during subsequent stamping.

[0035] The support base 29 has symmetrically opened connecting grooves, which are connected to the stamping groove. The connecting rods 31 are symmetrically fixed at the bottom of the lower mold 30 and are located in the connecting groove. The other end of the connecting rod 31 is fixedly connected to the bottom of the moving ring 6. Through the cooperation between the connecting rod 31 and the lower mold 30, the moving ring 6 drives the lower mold 30 to move in the stamping groove through the connecting rod 31, which ensures the stability of the subsequent equipment operation. It should be noted that, for example Figure 11 As shown, the cylinder 9 drives the pressing block assembly 8 and the upper mold 15 to move, so that the upper mold 15 and the lower mold 30 are in close contact. The pressing block assembly 8 squeezes the moving ring 6, so that the upper mold 15 stamps the galvanized steel sheet. like Figure 10As shown, the moving ring 6 is squeezed by the second reset spring 20, and the moving ring 6 drives the lower mold 30 to move through the connecting rod 31, so that the lower mold 30 lifts the stamped galvanized steel sheet, which facilitates the subsequent collection of the finished galvanized steel sheet.

[0036] like Figure 12 As shown, the door 2 is hinged to the side wall of the workbench 1, and the collection box 28 is fixedly installed on the inner side wall of the workbench 1. The support base 29 has multiple connecting holes at its end, and one end of the connecting hole is connected to the collection box 28. The other end of the connecting hole is connected to the stamping groove. When the galvanized steel sheet is stamped, the stamped waste enters the collection box 28 through the connecting holes, which facilitates the subsequent collection and processing of waste by the operators.

[0037] The functional principle of this invention can be explained through the following operational methods: First, place the galvanized steel sheet at the end of the support base 29, aligning the galvanized steel sheet with the lower mold 30. Then, start the electric slider 23, which drives the support plate 27 to move on the electromagnetic slide rail 22. Start the drive motor 24, which drives the threaded rod 25 to rotate, causing the guide block 26 to move on the threaded rod 25 through the internal thread, so that the heating cover 3 is coaxially sleeved on the base 5. Start the heating switch 4, which adjusts the heating cover 3 to a suitable temperature to preheat the galvanized steel sheet and achieve the temperature conditions required for hot stamping. After heating, move the heating cover 3 to both sides to facilitate subsequent stamping of the galvanized steel sheet.

[0038] By activating cylinder 9, the output end of cylinder 9 drives connecting seat 10 to move downward. Connecting seat 10 drives fixed block 13 to move via moving rod 14, causing fixed block 13 to drive pressing block assembly 8 to move, so that pressing block assembly 8 initially fixes the galvanized steel sheet, ensuring that no displacement occurs during hot stamping. First pressing block 801, second pressing block 802 and third pressing block 803 are tightly connected by fixing bolt 804 to enhance the uniformity of pressing force. The positioning block 7 and positioning groove 17 are adapted to each other, so that moving ring 6 and third pressing block 803 fit together. When the cylinder 9 drives the upper mold 15 and the galvanized steel sheet to perform the first stamping, the upper mold 15 and the galvanized steel sheet are stamped for the first time. Through the cooperation of the first return spring 12 and the first telescopic guide rod 11, the end of the upper mold 15 and the end of the lower mold 30 are brought into contact, and the connecting seat 10 drives the fixing rod 18 to move downward. The fixing rod 18 drives the chamfering mold 19 to extend into the stamping groove to perform the second stamping of the galvanized steel sheet, ensuring the stability of the second stamping of the galvanized steel sheet.

[0039] The third pressure block 803 presses the moving ring 6, causing the moving ring 6 to move the lower mold 30 within the connecting groove via the connecting rod 31. After pressing, the cylinder 9 moves the upper mold 15 upward. The second return spring 20 and the third telescopic guide rod 21 on the base 5 work together to move the moving ring 6, which in turn moves the lower mold 30 via the connecting rod 31. The lower mold 30 then ejects the stamped galvanized steel sheet, facilitating subsequent collection by operators.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hot stamping forming equipment for galvanized steel sheets, comprising a workbench (1), characterized in that, The workbench (1) is equipped with a movable heating cover (3), the heating cover (3) is equipped with a heating switch (4) at the end, the inner side wall of the workbench (1) is equipped with a cylinder (9), the output end of the cylinder (9) is equipped with a connecting seat (10), the outer side wall of the connecting seat (10) is equipped with a pressure block assembly (8), the connecting seat (10) is equipped with an upper mold (15) below, the upper mold (15) is equipped with multiple chamfering molds (19) at the end, the inner side wall of the workbench (1) is equipped with a base (5) and a support seat (29), the end of the support seat (29) is equipped with a stamping groove, the upper mold (30) is equipped with a lower mold above the stamping groove, the base (5) is equipped with a moving ring (6), the side wall of the workbench (1) is equipped with a box door (2), and the workbench (1) is equipped with a collection box (28).

2. The hot stamping forming equipment for galvanized steel sheet according to claim 1, characterized in that, The inner wall of the workbench (1) is provided with an electromagnetic slide rail (22), the side wall of the electromagnetic slide rail (22) is provided with an electric slider (23), and the side wall of the electric slider (23) is provided with a support plate (27).

3. The hot stamping forming equipment for galvanized steel sheet according to claim 2, characterized in that, The inner wall of the support plate (27) is provided with a groove, and the inner wall of the groove is provided with a threaded rod (25). The end of the support plate (27) is provided with a drive motor (24). The output end of the drive motor (24) is coaxially connected to the end of the threaded rod (25). The outer wall of the threaded rod (25) is provided with a guide block (26). The side wall of the guide block (26) is connected to the outer wall of the heating cover (3).

4. The hot stamping forming equipment for galvanized steel sheet according to claim 1, characterized in that, The pressure block assembly (8) includes a first pressure block (801), a second pressure block (802) and a third pressure block (803), which are connected by a fixing bolt (804).

5. The hot stamping forming equipment for galvanized steel sheet according to claim 1, characterized in that, The end of the connecting seat (10) is provided with a plurality of first return springs (12), and a first telescopic guide rod (11) is coaxially provided inside the first return spring (12). The end of the connecting seat (10) is provided with a second telescopic guide rod (16), and the end of the second telescopic guide rod (16) is connected to the end of the upper mold (15).

6. The hot stamping forming equipment for galvanized steel sheet according to claim 5, characterized in that, The inner wall of the third pressure block (803) is symmetrically provided with a fixing block (13), and the outer wall of the upper mold (15) is symmetrically provided with a moving rod (14).

7. The hot stamping forming equipment for galvanized steel sheet according to claim 6, characterized in that, The end of the connecting seat (10) is provided with multiple fixing rods (18), the fixing rods (18) pass through the end of the upper mold (15), and the end of the fixing rods (18) is connected to the end of the chamfering mold (19).

8. The hot stamping forming equipment for galvanized steel sheet according to claim 1, characterized in that, The base (5) is provided with multiple second return springs (20) at its end. The second return springs (20) are coaxially provided with a third telescopic guide rod (21). The end of the third telescopic guide rod (21) is connected to the bottom of the moving ring (6). The end of the moving ring (6) is provided with multiple positioning blocks (7). The bottom of the third pressure block (803) is provided with multiple positioning grooves (17).

9. The hot stamping forming equipment for galvanized steel sheet according to claim 1, characterized in that, The support base (29) has symmetrically opened connecting grooves, which are connected to the stamping groove. The bottom of the lower mold (30) has symmetrically provided connecting rods (31), and the other end of the connecting rods (31) is connected to the bottom of the moving ring (6).

10. A method using the hot stamping forming equipment for galvanized steel sheet according to claim 9, comprising the following steps: Step S1: First, place the galvanized steel sheet at the end of the support base (29) and align the galvanized steel sheet with the lower mold (30). Start the electric slider (23), which will drive the support plate (27) to move on the electromagnetic slide rail (22). Start the drive motor (24), which will drive the threaded rod (25) to rotate, so that the guide block (26) moves on the threaded rod (25) through the internal thread, so that the heating cover (3) is coaxially sleeved on the base (5). Start the heating switch (4) to adjust the heating cover (3) to a suitable temperature and preheat the galvanized steel sheet to achieve the temperature conditions required for hot stamping. After heating, move the heating cover (3) to both sides to facilitate the subsequent stamping of the galvanized steel sheet. Step S2: By starting the cylinder (9), the output end of the cylinder (9) drives the connecting seat (10) to move downward. The connecting seat (10) drives the fixed block (13) to move through the moving rod (14), so that the fixed block (13) drives the pressure block assembly (8) to move, so that the pressure block assembly (8) initially fixes the galvanized steel plate to ensure that no displacement occurs during the hot stamping process. The first pressure block (801), the second pressure block (802) and the third pressure block (803) are tightly connected by the fixing bolt (804) to enhance the uniformity of the pressing force. The positioning block (7) and the positioning groove (17) are adapted to each other so that the moving ring (6) and the third pressure block (803) fit together. Step S3: When the cylinder (9) drives the upper mold (15) and the galvanized steel plate to perform stamping, the upper mold (15) and the galvanized steel plate are stamped for the first time. Through the cooperation of the first reset spring (12) and the first telescopic guide rod (11), the end of the upper mold (15) and the end of the lower mold (30) are attached to each other, and the connecting seat (10) drives the fixing rod (18) to move downward. The fixing rod (18) drives the chamfering mold (19) to extend into the stamping groove to perform a second stamping of the galvanized steel plate, thus ensuring the stability of the galvanized steel plate during the second stamping. Step S4: The moving ring (6) is squeezed by the third pressure block (803), so that the moving ring (6) moves the lower mold (30) in the connecting groove through the connecting rod (31). After the squeezing is completed, the cylinder (9) drives the upper mold (15) to move upward. Through the combined action of the second reset spring (20) and the third telescopic guide rod (21) on the base (5), the second reset spring (20) drives the moving ring (6) to move, so that the moving ring (6) drives the lower mold (30) to move through the connecting rod (31), so that the lower mold (30) pushes out the stamped galvanized steel plate, which is convenient for the subsequent operators to collect the galvanized steel plate.

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