Punch forming die for machining automobile beam assembly and operation method

Abstract

The invention discloses a punch forming die for machining an automobile beam assembly and an operation method, relates to the technical field of punching dies, and aims to solve the problems that a traditional punching die is single in contact force application mode, workpieces are prone to deformation due to uneven local stress during punching, the problems of thin-wall complex parts are more prominent, and the defective rate is increased. The stamping die comprises an upper die mechanism and a lower die mechanism, and the upper die mechanism and the lower die mechanism are fixed in a supporting mode, so that stamping force concentration is hindered, the stamping effect is limited, and the high-quality requirement is difficult to meet. During machining, the die shell and the movable shell are comprehensively attached to a workpiece, so that stamping force is evenly distributed on the surface of the workpiece, the workpiece is prevented from deforming in the stamping process, due to the fact that the movable shell has flexibility, in the attaching process of the die shell and the movable shell, the movable shell can provide effective supporting force, stability of the workpiece is guaranteed, and during stamping, the workpiece is prevented from being damaged. The movable shell supporting structure can retract in time, conditions are created for centralized release of the punching force, and it is ensured that the punching force can accurately act on the specific part of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and more specifically, to a stamping die and operating method for processing automotive crossbeam assemblies. Background Technology

[0002] In the manufacturing industry, stamping technology is widely used in many fields such as automobiles, electronics, and aerospace due to its high efficiency and precision. It is used to produce metal parts of various shapes and sizes. Although traditional stamping dies can achieve basic forming functions during the stamping process, they have many limitations.

[0003] On the one hand, traditional stamping dies have a relatively simple contact and force application method between the upper and lower dies and the workpiece during stamping. At the moment of stamping, the workpiece is subjected to a large impact force, which can easily cause deformation due to uneven local force, affecting the quality and precision of the product. This deformation problem is more prominent for some thin-walled or complex-shaped parts, leading to an increase in the defect rate and production costs. On the other hand, the support structure of traditional dies is relatively fixed. During the stamping process, the lower die always provides stable support force. However, when the stamping action needs to be completed, this fixed support method cannot be flexibly adjusted. When the stamping force needs to be concentrated on a specific part of the workpiece to achieve precise forming, the fixed lower die support structure will hinder the stamping force to a certain extent, limiting the further improvement of the stamping effect and making it difficult to meet the production requirements of high-precision and high-quality products.

[0004] In view of this, we propose a stamping die and operation method for machining automotive crossbeam assemblies. Summary of the Invention

[0005] The purpose of this invention is to provide a stamping die and operating method for processing automotive crossbeam assemblies, in order to solve the technical problems of traditional stamping dies having a single contact force application mode, workpieces being prone to deformation due to uneven local force during stamping, the problem being more prominent for thin-walled complex parts, and the defect rate increasing; and the lower die being fixed, which hinders the concentration of stamping force, limits the stamping effect, and makes it difficult to meet the requirements of high quality.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a stamping forming die and operating method for processing automotive crossbeam assemblies, comprising an upper die mechanism and a lower die mechanism, wherein the upper die mechanism is fixedly connected above the lower die mechanism;

[0007] The upper mold mechanism includes a top plate, a hydraulic rod located below the top plate, an upper mold assembly connected to the top plate, a stamping assembly, two No. 1 pipes connected to the upper mold assembly, a telescopic pipe, two injection pipes located above the upper mold assembly, a No. 2 pipe, and an exhaust hood. The stamping assembly is located inside the upper mold assembly. The two No. 1 pipes are connected to the two No. 2 pipes respectively through the two telescopic pipes. The other end of the No. 2 pipes is connected to the exhaust hood.

[0008] The lower mold mechanism includes a base plate, a feeding groove located below the base plate, a support, a lower mold assembly, two support assemblies connected to the lower mold assembly, two toothed plates, and two adjustment assemblies. The support is connected to the base plate, the lower mold assembly is connected to the support assemblies, the lower mold assembly is disposed above the support, the toothed plates are disposed above the support, and the toothed plates are connected to the adjustment assemblies.

[0009] During processing, the mold outer shell and the movable shell fully fit the workpiece, ensuring that the stamping force is evenly distributed on the workpiece surface. This effectively avoids localized stress concentration, preventing workpiece deformation during stamping and significantly improving product precision and quality. It also reduces the defect rate and lowers production costs. Furthermore, due to the flexibility of the movable shell, it provides effective support during the mold outer shell and movable shell fitting process, ensuring workpiece stability. When it is necessary to eject the internal structure of the mold outer shell to stamp the workpiece, the movable shell support structure will retract in time, creating conditions for the concentrated release of stamping force. This ensures that the stamping force can be precisely applied to specific parts of the workpiece, achieving high-precision stamping and meeting the production requirements of high-precision, high-quality products.

[0010] Preferably, four hydraulic rods are fixedly connected to the four corners below the top plate, the bottom of the top plate is fixedly connected to the top of the upper mold assembly, the inner wall of the upper mold assembly is slidably connected to the stamping assembly, the two sides of the upper mold assembly are respectively connected to two No. 1 pipes, the other ends of the two No. 1 pipes are connected to No. 2 pipes through telescopic pipes, the other end of the No. 2 pipes is fixedly connected to the air inlet of the exhaust hood, and the top of the upper mold assembly is connected to two injection pipes;

[0011] The exhaust hood is located inside the lower mold assembly, and the bottom ends of the four hydraulic rods are all fixedly connected to the top of the base plate.

[0012] Preferably, the feeding groove is located below the substrate, the upper part of the substrate is fixedly connected to the bracket, the upper part of the bracket is fixedly connected to the bottom of the lower mold assembly, the lower mold assembly is slidably connected to the outside of the bracket, the inner wall of the lower mold assembly is engaged with two support components, the two support components are respectively fixedly connected to two adjustment components, the adjustment components are engaged with toothed plates, and the lower parts of the two toothed plates are fixedly connected to the upper part of the bracket.

[0013] Preferably, the upper mold assembly includes a mold shell, with vent holes on both sides of the mold shell, and two injection holes on the upper part of the mold shell. The two injection holes are respectively connected to two sliding holes. A connecting groove is provided on the lower part of the inner wall of the sliding hole, and the connecting groove is located below the mold shell. Several limiting grooves are provided on the inner wall of the sliding hole.

[0014] The mold housing is connected to the injection pipe through the injection hole, the mold housing is connected to the No. 1 pipe through the vent hole, the vent hole is connected to the bottom of the connecting groove, and the stamping assembly is slidably connected in the sliding hole and the connecting groove.

[0015] Preferably, the stamping assembly includes two sliding sleeves, each with a through hole on one side. Several sealing rings are provided on the outside of the sliding sleeves. A first spring is fixedly connected to the top of each of the two sliding sleeves, and a second spring is fixedly connected inside the sliding sleeves. The strength of the first spring is greater than that of the second spring. A piston plate is slidably connected inside the sliding sleeves. The top end of the piston plate is fixedly connected to the bottom end of the second spring. A connecting block is fixedly connected to the bottom of the piston plate. The bottom of the two connecting blocks is fixedly connected to the same stamping die.

[0016] Preferably, the connecting block is fitted with a sleeve, and the sleeve has a plurality of air leakage grooves on its outer side;

[0017] The top of the first spring is above the inner wall of the sliding hole, the sleeve and the stamping die are both located in the connecting groove, and the sliding sleeve is slidably connected in the sliding hole and the limiting groove.

[0018] Preferably, the lower mold assembly includes a movable shell, and several ventilation slots are provided on both sides of the movable shell. The ventilation slots are connected to the movable shell. Several elastic telescopic rods are fixedly connected inside the movable shell. The several elastic telescopic rods are fixedly connected by reinforcing ribs. A discharge slot is provided on the top of the movable shell.

[0019] The movable shell is fitted onto the top of the bracket, and the bottom ends of several elastic telescopic rods are fixedly connected to the top of the bracket. The support assembly is snapped into the discharge chute.

[0020] Preferably, the support assembly includes two connecting sleeves, with the same connecting shaft sleeved inside the two connecting sleeves, and a support plate fixedly connected to the outside of the connecting shaft. A groove is provided on one side of the support plate.

[0021] The adjusting component is fixedly connected to the outside of the connecting shaft. The adjusting component is located in the groove, and the two connecting sleeves are respectively snapped into the two sides of the inner wall of the discharge trough.

[0022] Preferably, the adjustment assembly includes two positioning plates, and a rotator is snapped between the two positioning plates. The rotator consists of a bearing and a rotating shaft. A transmission wheel and a gear are fixedly connected to the outside of the rotator. There are two transmission wheels, and the two transmission wheels are connected by a transmission belt.

[0023] The gear meshes with the toothed plate, another transmission wheel is fixedly connected to the outside of the connecting shaft, and the upper part of the positioning plate is fixedly connected to the upper part of the inner wall of the movable shell.

[0024] A method for operating a stamping die for machining an automotive crossbeam assembly includes the following steps:

[0025] S1. When in use, place the automotive crossbeam assembly workpiece to be processed on the movable shell of the lower mold assembly, and start the hydraulic rod to drive the upper mold mechanism to move downward;

[0026] S2. As the upper die descends, the stamping assembly gradually contacts the automotive crossbeam assembly workpiece to be processed and applies pressure to the lower die assembly. At this time, the stamping assembly retracts into the upper die assembly. Simultaneously, the movable shell squeezes the elastic telescopic rod to retract and causes the gear to mesh with the toothed plate, driving the connecting shaft to rotate and causing the support plate to flip along the connecting shaft, thereby exposing the discharge groove.

[0027] S3. As the mold shell continues to move downward, the moving shell continues to move downward, causing the support plate to completely flip to a vertical state. The sliding sleeve will also slide completely to the top of the sliding hole. At this time, the pressure accumulated by the external injection device through the injection pipe will enter the through hole on one side of the sliding sleeve along the injection hole, causing the piston plate, connecting block and stamping die below the sliding sleeve to be pressed down quickly, thereby stamping the automotive crossbeam assembly workpiece to be processed. The stamped material will also be discharged along the discharge groove and the blanking groove, completing the processing of the automotive crossbeam assembly workpiece.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. This invention designs an upper die assembly, a stamping assembly, and a lower die assembly. The workpiece is supported by a movable shell below, and the stamping die moves upward under the action of the counter-thrust, pushing the sliding sleeve to slide within the sliding hole. As the first and second springs contract, the movement of the stamping die becomes more difficult. At this time, the movable shell continues to move downward and squeezes the elastic telescopic rod, triggering the gear and toothed plate to mesh and drive the connecting shaft to rotate, causing the support plate to gradually flip from a horizontal state until it is completely flipped to a vertical state, exposing the discharge groove completely. At this time, the movable shell and the die shell are in a close fit, while the sliding sleeve slides synchronously to the top of the sliding hole, and the through hole and the injection hole are completely connected. The pressure applied by the external injection device quickly pushes the piston plate downward through the injection hole and the through hole, thereby driving the connecting block and the stamping die to press down synchronously and quickly. This device performs final pressing on automotive crossbeam assemblies. During processing, the mold shell and movable shell fully conform to the workpiece, ensuring that the stamping force is evenly distributed on the workpiece surface. This effectively avoids localized stress concentration, preventing workpiece deformation during stamping, significantly improving product precision and quality, reducing defect rates, and lowering production costs. Furthermore, due to the flexibility of the movable shell, it provides effective support during the mold shell and movable shell's contact, ensuring workpiece stability. When the internal structure of the mold shell needs to be ejected to stamp the workpiece, the movable shell support structure retracts in time, creating conditions for concentrated release of stamping force. This ensures that the stamping force can be precisely applied to specific parts of the workpiece, achieving high-precision stamping and meeting the production requirements of high-precision, high-quality products.

[0030] 2. This invention also incorporates a stamping assembly, a support assembly, and an adjustment assembly. After processing, the formed automotive crossbeam assembly workpiece will automatically slide out along the discharge groove and unloading groove under gravity. The hydraulic rod gradually drives the mold shell to reset, while the first and second springs will also drive the piston plate, stamping mold, and sliding sleeve to reset respectively. During the reset process, the elastic telescopic rod pushes the movable shell upward, and the gear contacts the tooth plate and rotates in the opposite direction during the upward movement, driving the connecting shaft to rotate in the opposite direction, so that the support plate gradually resets from a vertical state to a horizontal state. This allows the device to reset quickly, giving it high repeatability and adaptive material discharge capability. Furthermore, the reset actions of each actuator are synchronized and coordinated, without jamming or interference, reducing human intervention and significantly improving the stability of mold operation and the consistency of workpiece forming. This further improves the automation efficiency and forming accuracy of the mold.

[0031] 3. The present invention also designs a No. 1 spring and a No. 2 spring, with the No. 1 spring having a greater strength than the No. 2 spring. This ensures that when the stamping die moves down and pushes the piston plate and sliding sleeve back, the piston plate will move up first. This ensures that before the through hole and the injection hole are connected, the mold shell, stamping die, movable shell and support plate have all moved to the designated position, thus ensuring the stability and safety of the device during use. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the upper mold mechanism of the present invention;

[0034] Figure 3 This is a schematic diagram of the upper mold assembly structure of the present invention;

[0035] Figure 4 This is a schematic cross-sectional view of the upper mold assembly of the present invention;

[0036] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A;

[0037] Figure 6 This is a schematic diagram of the lower mold assembly structure of the present invention;

[0038] Figure 7 This is a schematic diagram of the support component structure of the present invention;

[0039] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B;

[0040] Figure 9 This is a schematic cross-sectional view of the lower mold assembly of the present invention.

[0041] Explanation of the labels in the diagram:

[0042] 1. Upper mold mechanism; 2. Lower mold mechanism;

[0043] 11. Top plate; 12. Hydraulic rod; 13. Upper mold assembly; 14. Stamping assembly; 15. Pipe No. 1; 16. Telescopic pipe; 17. Pipe No. 2; 18. Exhaust hood; 19. Injection pipe;

[0044] 21. Substrate; 22. Feeding groove; 23. Support; 24. Lower mold assembly; 25. Support assembly; 26. Toothed plate; 27. Adjustment assembly;

[0045] 131. Mold shell; 132. Vent hole; 133. Injection hole; 134. Sliding hole; 135. Limiting groove; 136. Connecting groove;

[0046] 141. Sliding sleeve; 142. Through hole; 143. Spring No. 1; 144. Spring No. 2; 145. Piston plate; 146. Connecting block; 147. Sleeve; 148. Air leakage groove; 149. Stamping die;

[0047] 241. Movable shell; 242. Ventilation duct; 243. Reinforcing rib; 244. Elastic telescopic rod; 245. Discharge chute;

[0048] 251. Connecting sleeve; 252. Connecting shaft; 253. Support plate; 254. Groove;

[0049] 271. Positioning plate; 272. Rotator; 273. Drive wheel; 274. Drive belt; 275. Gear. Detailed Implementation

[0050] like Figures 1 to 9 As shown, the present invention relates to a stamping forming die and operating method for processing an automotive crossbeam assembly, comprising an upper die mechanism 1 and a lower die mechanism 2, wherein the upper die mechanism 1 is fixedly connected above the lower die mechanism 2;

[0051] The upper mold mechanism 1 includes a top plate 11, a hydraulic rod 12 located below the top plate 11, an upper mold assembly 13 connected to the top plate 11, a stamping assembly 14, two first pipes 15 connected to the upper mold assembly 13, a telescopic pipe 16, two injection pipes 19 located above the upper mold assembly 13, a second pipe 17, and an exhaust hood 18. The stamping assembly 14 is located inside the upper mold assembly 13. The two first pipes 15 are connected to the two second pipes 17 via the two telescopic pipes 16, and the other end of the second pipe 17 is connected to the exhaust hood 18. The lower mold mechanism 2 includes a base plate 21, a blanking groove 22 located below the base plate 21, a bracket 23, a lower mold assembly 24, two support assemblies 25 connected to the lower mold assembly 24, and two... The assembly consists of a toothed plate 26 and two adjusting components 27. A bracket 23 is connected to a base plate 21, and a lower die assembly 24 is connected to a support assembly 25. The lower die assembly 24 is positioned above the bracket 23. The toothed plate 26 is also positioned above the bracket 23 and connected to the adjusting components 27. Through the design of the upper die assembly 13, stamping assembly 14, and lower die assembly 24, the workpiece is supported by a movable shell 241. The stamping die 149 moves upward under the action of the counter-thrust, pushing the sliding sleeve 141 to slide within the sliding hole 134. As the first spring 143 and the second spring 144 contract, the movement of the stamping die 149 becomes more difficult. At this time, the movable shell 241 continues to move downward and squeezes the elastic telescopic rod 244, triggering the gear 27. 5 engages with the toothed plate 26, driving the connecting shaft 252 to rotate, causing the support plate 253 to gradually flip from a horizontal state until it is completely flipped to a vertical state, exposing the discharge groove 245. At this time, the movable shell 241 and the mold shell 131 are in a close fit, while the sliding sleeve 141 slides synchronously to the top of the sliding hole 134. The through hole 142 is fully connected to the injection hole 133. The pressure applied by the external injection device quickly pushes the piston plate 145 downward through the injection hole 133 and the through hole 142, thereby driving the connecting block 146 and the stamping die 149 to press down synchronously and quickly, performing final pressing forming on the automotive crossbeam assembly workpiece to be processed. During processing, the mold shell 131 and the movable shell 241 are fully in contact with the workpiece. This design ensures that the stamping force is evenly distributed on the workpiece surface, effectively avoiding localized stress concentration and preventing workpiece deformation during stamping. This significantly improves product precision and quality, reduces defect rates, and lowers production costs. Furthermore, due to the flexibility of the movable shell 241, it provides effective support during the fitting process between the mold shell 131 and the movable shell 241, ensuring workpiece stability. When it is necessary to eject the internal structure of the mold shell 131 to stamp the workpiece, the supporting structure of the movable shell 241 will retract in time, creating conditions for the concentrated release of stamping force. This ensures that the stamping force can be precisely applied to specific parts of the workpiece, achieving high-precision stamping and meeting the production requirements of high-precision, high-quality products.

[0052] In an embodiment of the present invention, four hydraulic rods 12 are fixedly connected to the four corners below the top plate 11, the lower part of the top plate 11 is fixedly connected to the upper part of the upper mold assembly 13, the inner wall of the upper mold assembly 13 is slidably connected to the stamping assembly 14, the two sides of the upper mold assembly 13 are respectively connected to two No. 1 pipes 15, the other ends of the two No. 1 pipes 15 are connected to No. 2 pipes 17 through telescopic pipes 16, the other end of the No. 2 pipes 17 is fixedly connected to the air inlet of the exhaust hood 18, and the upper part of the upper mold assembly 13 is connected to two injection pipes 19. The exhaust hood 18 is located inside the lower mold assembly 24. The bottom ends of the four hydraulic rods 12 are all fixedly connected to the upper part of the base plate 21. The feed groove 22 is opened below the base plate 21. The upper part of the base plate 21 is fixedly connected to the bracket 23. The upper part of the bracket 23 is fixedly connected to the bottom of the lower mold assembly 24. The lower mold assembly 24 is slidably connected to the outside of the bracket 23. The inner wall of the lower mold assembly 24 is engaged with two support components 25. The two support components 25 are respectively fixedly connected to two adjusting components 27. The adjusting components 27 mesh with the toothed plate 26. The lower part of the toothed plate 26 is fixedly connected to the upper part of the bracket 23. Through the design of the stamping assembly 14, the support assembly 25 and the adjustment assembly 27, after processing, the formed automobile crossbeam assembly workpiece will automatically slide down and be discharged along the discharge groove 245 and the unloading groove 22 under the action of gravity. The hydraulic rod 12 gradually drives the mold shell 131 to reset, while the first spring 143 and the second spring 144 will also drive the piston plate 145, the stamping mold 149 and the sliding sleeve 141 to reset respectively. During the reset process, the elastic telescopic rod 244 pushes the movable shell 241 to move upward. During the upward movement, the gear 275 contacts the toothed plate 26 and rotates in the opposite direction, driving the connecting shaft 252 to rotate in the opposite direction, so that the support plate 253 is gradually reset from the vertical state to the horizontal state. This allows the device to reset quickly, so that the device has high repeatability positioning accuracy and adaptive material discharge capability during use. Moreover, the reset actions of each execution component are synchronized and coordinated, without jamming or interference, reducing human intervention, significantly improving the stability of mold operation and the consistency of workpiece forming, and further improving the automation operation efficiency and forming accuracy of the mold.

[0053] In an embodiment of the present invention, the upper mold assembly 13 includes a mold housing 131. Vent holes 132 are provided on both sides of the mold housing 131. Two injection holes 133 are provided on the upper part of the mold housing 131, and the two injection holes 133 are respectively connected to two sliding holes 134. A connecting groove 136 is provided on the lower part of the inner wall of the sliding hole 134, and the connecting groove 136 is located below the mold housing 131. A plurality of limiting grooves 135 are provided on the inner wall of the sliding hole 134. The mold housing 131 is connected to the injection pipe 19 through the injection holes 133 and to the first pipe 15 through the vent holes 132. The vent holes 132 are connected to the bottom of the connecting groove 136. The stamping assembly 14 is slidably connected within the sliding holes 134 and the connecting groove 136. The stamping assembly 14 includes two sliding sleeves 141, each with a vent hole 132 on one side. The device includes a through hole 142 and several sealing rings on the outside of the sliding sleeve 141. A first spring 143 is fixedly connected to the top of each of the two sliding sleeves 141, and a second spring 144 is fixedly connected inside the sliding sleeve 141. The strength of the first spring 143 is greater than that of the second spring 144. A piston plate 145 is slidably connected inside the sliding sleeve 141. The top of the piston plate 145 is fixedly connected to the bottom of the second spring 144. A connecting block 146 is fixedly connected below the piston plate 145. The two connecting blocks 146 are fixedly connected below the same stamping die 149. After the stamping die 149 inside the die housing 131 adheres to the surface of the steel plate to its limit, it is quickly ejected by the pressure accumulated in the injection hole 133 to complete the stamping process. This rapid ejection design allows the stamping action to be completed in a short time, greatly shortening the stamping cycle of a single part. Compared with traditional dies, this reduces the waiting time during the stamping process, increases the production quantity per unit time, and thus significantly improves overall production efficiency, helping enterprises achieve large-scale, high-efficiency production goals.

[0054] In another embodiment of the present invention, a sleeve 147 is fitted over the connecting block 146. The sleeve 147 has several air-leaking grooves 148 on its outer surface. The top of the first spring 143 is above the inner wall of the sliding hole 134. The sleeve 147 and the stamping die 149 are both located within the connecting groove 136. The sliding sleeve 141 is slidably connected within the sliding hole 134 and the limiting groove 135. The lower die assembly 24 includes a movable shell 241. Several ventilation grooves 242 are provided on both sides of the movable shell 241, and the ventilation grooves 242 are connected to the movable shell 241. Several elastic telescopic rods 244 are fixedly connected inside the movable shell 241, and the elastic telescopic rods 244 are fixedly connected by reinforcing ribs 243. A discharge groove 245 is provided above the mold housing 241. The movable shell 241 is sleeved on the top of the bracket 23. The bottom ends of several elastic telescopic rods 244 are fixedly connected to the top of the bracket 23. The support component 25 is snapped into the discharge groove 245. After stamping, the mold housing 131 and the movable shell 241 can automatically reset without the need for complicated manual reset operations. This not only reduces the labor intensity of workers and reduces mold damage and product defects caused by human error, but also improves the automation level of production. At the same time, the automatic reset function reduces the downtime of the mold, improves the utilization rate of the equipment, further reduces production costs, and improves the economic benefits of the enterprise.

[0055] In another embodiment of the present invention, the support assembly 25 includes two connecting sleeves 251, with the same connecting shaft 252 sleeved inside each sleeve. A support plate 253 is fixedly connected to the outside of the connecting shaft 252. A groove 254 is provided on one side of the support plate 253. An adjusting assembly 27 is fixedly connected to the outside of the connecting shaft 252 and is located inside the groove 254. The two connecting sleeves 251 are respectively engaged on both sides of the inner wall of the discharge trough 245. The adjusting assembly 27 includes two positioning plates 271, with a rotator 272 engaged between each positioning plate 271. The rotator 272 consists of a bearing and a rotating shaft. A transmission wheel 273 and a gear 275 are fixedly connected to the outside of the rotator 272. There are two transmission wheels 273. The driving wheel 273 is connected by a transmission belt 274, the gear 275 meshes with the toothed plate 26, and another driving wheel 273 is fixedly connected to the outside of the connecting shaft 252. The upper part of the positioning plate 271 is fixedly connected to the upper part of the inner wall of the movable shell 241. Because a first spring 143 and a second spring 144 are provided, and the strength of the first spring 143 is greater than that of the second spring 144, when the stamping die 149 moves down and pushes the piston plate 145 and the sliding sleeve 141, the piston plate 145 will move up first. This ensures that between the connection between the through hole 142 and the injection hole 133, the mold shell 131, the stamping die 149, the movable shell 241, and the support plate 253 have all moved to the designated position, ensuring the stability and safety of the device during use.

[0056] Working principle: This embodiment provides a stamping forming die and operation method for processing automotive crossbeam assembly. When in use, the automotive crossbeam assembly workpiece to be processed is placed on the movable shell 241 of the lower die assembly 24. The external hydraulic equipment is connected to the injection pipe 19 and started. The upper die mechanism 1 is driven to move downward through the hydraulic rod 12, so that the stamping assembly 14 initially contacts the workpiece.

[0057] The workpiece is supported by the movable shell 241 below, and the stamping die 149 moves upward under the action of the counter-thrust, pushing the sliding sleeve 141 to slide within the sliding hole 134. As the first spring 143 and the second spring 144 contract, the movement of the stamping die 149 becomes more difficult. At this time, the movable shell 241 continues to move downward and squeezes the elastic telescopic rod 244, triggering the gear 275 to mesh with the toothed plate 26, driving the connecting shaft 252 to rotate, causing the support plate 253 to gradually flip from a horizontal state until the support plate... 253 is completely flipped to a vertical position, and the discharge groove 245 is completely exposed. At this time, the movable shell 241 is in a close fit with the mold shell 131, while the sliding sleeve 141 slides synchronously to the top of the sliding hole 134. The through hole 142 is completely connected with the injection hole 133. The pressure applied by the external injection device quickly pushes the piston plate 145 downward through the injection hole 133 and the through hole 142, thereby driving the connecting block 146 and the stamping die 149 to press down synchronously and quickly, and perform final pressing forming on the automotive crossbeam assembly workpiece to be processed.

[0058] As the stamping die 149 falls rapidly, the piston plate 145 will disengage from the sliding sleeve 141, allowing a large amount of gas to enter the exhaust port 132 along the venting groove 148 outside the sleeve 147, and then be discharged into the movable shell 241 along the exhaust port 132, the first pipe 15, the telescopic pipe 16, the second pipe 17 and the exhaust cover 18, thereby rapidly reducing the temperature of the workpiece and the surface of the stamping die 149.

[0059] After processing, the formed automotive crossbeam assembly workpiece will automatically slide down and be discharged along the discharge groove 245 and the unloading groove 22 under the action of gravity. The hydraulic rod 12 gradually drives the mold shell 131 to reset, while the first spring 143 and the second spring 144 will also drive the piston plate 145, the stamping die 149 and the sliding sleeve 141 to reset respectively. During the reset process, the elastic telescopic rod 244 pushes the movable shell 241 to move upward. During the upward movement, the gear 275 contacts the tooth plate 26 and rotates in the opposite direction, driving the connecting shaft 252 to rotate in the opposite direction, so that the support plate 253 gradually resets from the vertical state to the horizontal state.

[0060] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A stamping die for machining an automotive crossbeam assembly, characterized in that, It includes an upper mold mechanism (1) and a lower mold mechanism (2), wherein the upper mold mechanism (1) is fixedly connected above the lower mold mechanism (2); The upper mold mechanism (1) includes a top plate (11), a hydraulic rod (12) located below the top plate (11), an upper mold assembly (13) connected to the top plate (11), a stamping assembly (14), two first pipes (15) connected to the upper mold assembly (13), a telescopic pipe (16), two injection pipes (19) and a second pipe (17) arranged above the upper mold assembly (13), and an exhaust hood (18). The stamping assembly (14) is located inside the upper mold assembly (13), and the two first pipes (15) are connected to the two second pipes (17) respectively through the two telescopic pipes (16). The other end of the second pipe (17) is connected to the exhaust hood (18). The lower mold mechanism (2) includes a base plate (21), a feeding groove (22) located below the base plate (21), a bracket (23), a lower mold assembly (24), two support components (25) connected to the lower mold assembly (24), two toothed plates (26) and two adjustment components (27), wherein the bracket (23) is connected to the base plate (21), the lower mold assembly (24) is connected to the support components (25), the lower mold assembly (24) is disposed above the bracket (23), the toothed plates (26) are disposed above the bracket (23), and the toothed plates (26) are connected to the adjustment components (27).

2. The stamping die for processing automotive crossbeam assemblies according to claim 1, characterized in that, The top plate (11) is fixedly connected to four hydraulic rods (12) at its four corners. The bottom of the top plate (11) is fixedly connected to the top of the upper mold assembly (13). The inner wall of the upper mold assembly (13) is slidably connected to the stamping assembly (14). The two sides of the upper mold assembly (13) are connected to two No. 1 pipes (15). The other ends of the two No. 1 pipes (15) are connected to the No. 2 pipe (17) through the telescopic pipe (16). The other end of the No. 2 pipe (17) is fixedly connected to the air inlet of the exhaust hood (18). The top of the upper mold assembly (13) is connected to two injection pipes (19). The exhaust hood (18) is located inside the lower mold assembly (24), and the bottom ends of the four hydraulic rods (12) are fixedly connected to the top of the base plate (21).

3. The stamping die for processing automotive crossbeam assemblies according to claim 2, characterized in that, The feeding groove (22) is located below the substrate (21). The upper part of the substrate (21) is fixedly connected to the bracket (23). The upper part of the bracket (23) is fixedly connected to the bottom of the lower mold assembly (24). The lower mold assembly (24) is slidably connected to the outside of the bracket (23). The inner wall of the lower mold assembly (24) is engaged with two support components (25). The two support components (25) are fixedly connected to two adjustment components (27) respectively. The adjustment components (27) mesh with the toothed plate (26). The lower parts of the two toothed plates (26) are fixedly connected to the upper part of the bracket (23).

4. The stamping die for processing automotive crossbeam assemblies according to claim 3, characterized in that, The upper mold assembly (13) includes a mold shell (131), with vent holes (132) on both sides of the mold shell (131). Two injection holes (133) are opened on the upper part of the mold shell (131), and the two injection holes (133) are respectively connected to two sliding holes (134). A connecting groove (136) is opened on the lower part of the inner wall of the sliding hole (134), and the connecting groove (136) is opened below the mold shell (131). A plurality of limiting grooves (135) are opened on the inner wall of the sliding hole (134). The mold housing (131) is connected to the injection pipe (19) through the injection hole (133), the mold housing (131) is connected to the first pipe (15) through the vent hole (132), the vent hole (132) is connected to the bottom of the connecting groove (136), and the stamping assembly (14) is slidably connected in the sliding hole (134) and the connecting groove (136).

5. The stamping die for processing automotive crossbeam assemblies according to claim 4, characterized in that, The stamping assembly (14) includes two sliding sleeves (141). Each of the two sliding sleeves (141) has a through hole (142) on one side. Several sealing rings are provided on the outside of the sliding sleeves (141). A first spring (143) is fixedly connected to the top of each of the two sliding sleeves (141). A second spring (144) is fixedly connected inside the sliding sleeves (141). The strength of the first spring (143) is greater than that of the second spring (144). A piston plate (145) is slidably connected inside the sliding sleeves (141). The top end of the piston plate (145) is fixedly connected to the bottom end of the second spring (144). A connecting block (146) is fixedly connected to the bottom of the piston plate (145). The bottom of the two connecting blocks (146) is fixedly connected to the same stamping die (149).

6. The stamping die for processing automotive crossbeam assemblies according to claim 5, characterized in that, The connecting block (146) is fitted with a sleeve (147), and the sleeve (147) has several air leakage grooves (148) on its outside. The top of the first spring (143) is above the inner wall of the sliding hole (134), the sleeve (147) and the stamping die (149) are both located in the connecting groove (136), and the sliding sleeve (141) is slidably connected in the sliding hole (134) and the limiting groove (135).

7. The stamping die for processing automotive crossbeam assemblies according to claim 6, characterized in that, The lower mold assembly (24) includes a movable shell (241), and several ventilation slots (242) are provided on both sides of the movable shell (241). The ventilation slots (242) are connected to the movable shell (241). Several elastic telescopic rods (244) are fixedly connected inside the movable shell (241). The several elastic telescopic rods (244) are fixedly connected by reinforcing ribs (243). A discharge slot (245) is provided on the top of the movable shell (241). The movable shell (241) is sleeved on the top of the bracket (23), and the bottom ends of several elastic telescopic rods (244) are fixedly connected to the top of the bracket (23). The support component (25) is snapped into the discharge trough (245).

8. The stamping die for processing automotive crossbeam assemblies according to claim 7, characterized in that, The support assembly (25) includes two connecting sleeves (251), and the same connecting shaft (252) is sleeved inside the two connecting sleeves (251). A support plate (253) is fixedly connected to the outside of the connecting shaft (252), and a groove (254) is provided on one side of the support plate (253). The adjustment component (27) is fixedly connected to the outside of the connecting shaft (252). The adjustment component (27) is located in the groove (254). The two connecting sleeves (251) are respectively snapped into the two sides of the inner wall of the discharge groove (245).

9. The stamping die for processing automotive crossbeam assemblies according to claim 8, characterized in that, The adjustment assembly (27) includes two positioning plates (271), and a rotator (272) is snapped between the two positioning plates (271). The rotator (272) is composed of a bearing and a rotating shaft. A transmission wheel (273) and a gear (275) are fixedly connected to the outside of the rotator (272). There are two transmission wheels (273), and the two transmission wheels (273) are connected by a transmission belt (274). The gear (275) meshes with the toothed plate (26), and another transmission wheel (273) is fixedly connected to the outside of the connecting shaft (252). The upper part of the positioning plate (271) is fixedly connected to the upper part of the inner wall of the movable shell (241).

10. A method for operating a stamping die for machining an automotive crossbeam assembly, as described in any one of claims 1-9, characterized in that... The following steps are included: S1. When in use, place the automotive crossbeam assembly workpiece to be processed on the movable shell (241) of the lower mold assembly (24), and start the hydraulic rod (12) to drive the upper mold mechanism (1) to move downward; S2. As the upper die descends, the stamping assembly (14) gradually contacts the workpiece of the automobile crossbeam assembly to be processed and applies pressure to the lower die assembly (24). At this time, the stamping assembly (14) retracts into the upper die assembly (13). At the same time, the movable shell (241) squeezes the elastic telescopic rod (244) to retract and causes the gear (275) to mesh with the toothed plate (26) to drive the connecting shaft (252) to rotate, causing the support plate (253) to flip along the connecting shaft (252), thereby exposing the discharge groove (245). S3. As the mold shell (131) continues to move downward, the movable shell (241) continues to move downward, causing the support plate (253) to completely flip to a vertical state. The sliding sleeve (141) will also slide completely to the top of the sliding hole (134). At this time, the pressure accumulated by the external injection device through the injection pipe (19) will enter the through hole (142) on one side of the sliding sleeve (141) along the injection hole (133), causing the piston plate (145), connecting block (146) and stamping die (149) below the sliding sleeve (141) to press down quickly, thereby stamping the automotive crossbeam assembly workpiece to be processed. The stamped material will also be discharged along the discharge groove (245) and the unloading groove (22), completing the processing of the automotive crossbeam assembly workpiece.

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