A high-pressure positioning hole forming pressure control device for a front cross beam of a front subframe

Abstract

The utility model discloses a front vice car frame front crossbeam high pressure positioning hole forming pressure control device, including upper mould, lower mould and workstation, still include: multistage pressure control mechanism: multistage pressure control mechanism includes the cavity setting on lower mould, be provided with a plurality of liquid delivery pipeline on the cavity, the inside of liquid delivery pipeline is provided with the positioning pin, the top of liquid delivery pipeline is provided with pressure ring, the hydraulic compensation actuator is connected to the pressure ring bottom outer wall, the pressure ring bottom outer wall is provided with the deformation analysis module, deformation analysis module with hydraulic compensation actuator cooperation uses. The utility model discloses a front vice car frame front crossbeam high pressure positioning hole forming pressure control device has accurate control pressure, improves product quality, promotes positioning hole forming quality and precision, ensures the assembly accuracy and overall performance of the technical effect of automobile parts.

Description

Technical Field

[0001] This utility model relates to the field of stamping forming technology, and in particular to a high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe. Background Technology

[0002] In automobile manufacturing, stamping is a crucial sheet metal processing technology. It uses a press and dies to apply external force to sheet metal, causing it to undergo plastic deformation to obtain parts of the desired shape and size. Stamping plays a vital role in automobile manufacturing. It is the first step in automobile body manufacturing and a key factor determining the quality and performance of the car body.

[0003] However, in the traditional internal high-pressure molding process, there are significant shortcomings in pressure control for the positioning holes of the front crossbeam of the front subframe. Specifically, the traditional process often struggles to achieve precise pressure control during the molding of the positioning holes, leading to deviations in the dimensions of the formed holes. This, in turn, affects subsequent assembly accuracy and overall vehicle performance. Furthermore, once pressure control deviations occur, they are difficult to detect and correct in a timely manner, resulting in a high scrap rate, increased production costs, and wasted resources.

[0004] For example, in existing technologies, the hydraulic system for internal high-pressure forming of positioning holes is affected by changes in oil viscosity and temperature, as well as oil pump pulsation. During the forming process, the pressure is prone to deviate from the set value, leading to deviations in the positioning hole dimensions, such as excessive ovality and uneven wall thickness reduction. Utility Model Content

[0005] This utility model discloses a pressure control device for forming high-pressure positioning holes in the front crossbeam of the front subframe, which aims to solve the technical problem that traditional processes often have difficulty in achieving precise pressure control during positioning hole forming, resulting in deviations in the size of the formed positioning holes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pressure control device for forming high-pressure positioning holes in the front crossbeam of a front subframe includes an upper mold, a lower mold, and a worktable. It further includes: a multi-stage pressure control mechanism: the multi-stage pressure control mechanism includes a cavity disposed on the lower mold, a plurality of liquid delivery pipes disposed on the cavity, positioning pins disposed inside the liquid delivery pipes, a pressure ring disposed at the top of the liquid delivery pipes, a hydraulic compensation actuator connected to the bottom outer wall of the pressure ring, and a deformation analysis module disposed on the bottom outer wall of the pressure ring, the deformation analysis module being used in conjunction with the hydraulic compensation actuator; and an auxiliary circulation mechanism: the auxiliary circulation mechanism is disposed on both outer walls of the lower mold.

[0008] In this solution, a multi-stage pressure control mechanism is set up to precisely control the pressure, improve product quality, and ensure the assembly accuracy and overall performance of automotive parts. During the molding process, the deformation analysis module can monitor the deformation of relevant components in real time. The hydraulic compensation actuator performs precise compensation and adjustment of the pressure based on the monitoring results of the deformation analysis module, thereby achieving precise control of the molding pressure, ensuring stable molding quality of the positioning holes, and meeting the product precision requirements.

[0009] In a preferred embodiment, a connecting block is connected to the outer wall of the upper mold, a guide frame is provided on the connecting block, and a fixing block is provided on the top of the guide frame.

[0010] The guide frame provides a precise guiding path for the movement of the upper mold. During the molding process, the upper mold needs to perform actions such as pressing down and closing the mold according to a specific trajectory. The guide frame ensures that the upper mold does not deviate or shake during the movement, ensuring accurate alignment between the upper and lower molds and improving the mold closing accuracy. This, in turn, ensures the quality and dimensional accuracy of the high-pressure positioning hole forming in the front crossbeam of the front subframe. The combined use of the connecting block and the guide frame further enhances the positioning effect of the upper mold. Through cooperation with the lower mold and other related components, the upper mold can be positioned accurately when closing the mold, ensuring the stability of the relative positional relationship between the components during the molding process. This helps to improve the consistency and pass rate of the molded products. At the same time, the connecting block connects the upper mold and the guide frame, playing a supporting role in the structure of the upper mold. This allows the upper mold to maintain structural stability during movement and molding, withstand various forces generated during the molding process, and prevent the upper mold from deforming or being damaged due to uneven force. This fixing method ensures that the upper mold can stably receive external power and move according to the predetermined pressure and speed, while also ensuring the overall stability and safety of the entire molding device during operation.

[0011] In a preferred embodiment, the auxiliary circulation mechanism includes return pipes disposed at both ends of the cavity.

[0012] During the high-pressure positioning hole forming process in the front crossbeam of the front subframe, the liquid flows and is pressurized within the cavity. Return pipes are located at both ends of the cavity, promoting fluid circulation between the cavity and the hydraulic system. This helps balance the pressure in different parts of the cavity, preventing forming defects caused by excessively high or low local pressure, ensuring pressure uniformity and stability during forming, and thus improving the quality of the positioning hole forming. Simultaneously, during forming, the liquid temperature may vary due to various factors such as frictional heat generation and uneven heat transfer. The return pipes, through liquid circulation, transport the hotter liquid from the cavity to the outside for cooling, while simultaneously returning the cooled liquid to the hydraulic system, making the liquid temperature within the cavity more uniform. A uniform temperature distribution helps reduce material property changes and forming stress caused by temperature gradients, preventing deformation and cracking after positioning hole forming, and improving product performance and reliability.

[0013] As described above, a high-pressure positioning hole forming pressure control device for the front crossbeam of a front subframe includes an upper mold, a lower mold, and a worktable. It also includes: a multi-stage pressure control mechanism: the multi-stage pressure control mechanism includes a cavity disposed on the lower mold, a plurality of liquid delivery pipes disposed on the cavity, positioning pins disposed inside the liquid delivery pipes, a pressure ring disposed at the top of the liquid delivery pipes, a hydraulic compensation actuator connected to the bottom outer wall of the pressure ring, and a deformation analysis module disposed on the bottom outer wall of the pressure ring, the deformation analysis module working in conjunction with the hydraulic compensation actuator; and an auxiliary circulation mechanism: the auxiliary circulation mechanism is disposed on both outer walls of the lower mold. The high-pressure positioning hole forming pressure control device for the front crossbeam of a front subframe provided by this utility model has the technical effect of precisely controlling pressure, improving product quality, enhancing the forming quality and accuracy of the positioning holes, and ensuring the assembly accuracy and overall performance of automotive parts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe proposed in this utility model.

[0015] Figure 2 This is a front view of a high-pressure positioning hole forming pressure control device for the front crossbeam of the front subframe proposed in this utility model.

[0016] Figure 3 This is a schematic diagram of the split structure of a high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe proposed in this utility model.

[0017] Figure 4 This is a cross-sectional view of a high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe proposed in this utility model.

[0018] In the attached diagram: 1. Lower mold; 2. Upper mold; 3. Connecting block; 4. Guide frame; 5. Fixing block; 6. Worktable; 7. Return pipe; 8. Cavity; 9. Liquid conveying pipe; 10. Pressure ring; 11. Positioning pin; 12. Hydraulic compensating actuator; 13. Deformation analysis module. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] The high-pressure positioning hole forming pressure control device disclosed in this utility model is mainly used in scenarios where it is often difficult to achieve precise pressure control during the forming of positioning holes in traditional processes, resulting in deviations in the size of the formed positioning holes.

[0022] Reference Figure 1 and Figure 2 A pressure control device for forming high-pressure positioning holes in the front crossbeam of a front subframe includes an upper mold 2, a lower mold 1, and a worktable 6. It also includes: a multi-stage pressure control mechanism: the multi-stage pressure control mechanism includes a cavity 8 disposed on the lower mold 1, a plurality of liquid delivery pipes 9 disposed on the cavity 8, a positioning pin 11 disposed inside the liquid delivery pipes 9, a pressure ring 10 disposed at the top of the liquid delivery pipes 9, a hydraulic compensation actuator 12 connected to the bottom outer wall of the pressure ring 10, and a deformation analysis module 13 disposed on the bottom outer wall of the pressure ring 10, the deformation analysis module 13 working in conjunction with the hydraulic compensation actuator 12; and an auxiliary circulation mechanism: the auxiliary circulation mechanism is disposed on the outer walls of both sides of the lower mold 1.

[0023] Specifically, by setting up a multi-stage pressure control mechanism, the pressure is precisely controlled, product quality is improved, and the assembly accuracy and overall performance of automotive parts are ensured. During the molding process, the deformation analysis module 13 can monitor the deformation of relevant components in real time. The hydraulic compensation actuator 12 performs precise compensation and adjustment of the pressure based on the monitoring results of the deformation analysis module 13, thereby achieving precise control of the molding pressure, ensuring stable molding quality of the positioning holes, and meeting the product precision requirements.

[0024] The pressure ring 10 is connected to the hydraulic compensation actuator 12 and the deformation analysis module 13, and works together with the positioning pin 11.

[0025] Specifically, the pressure ring 10 monitors the pressure value inside the cavity 8 in real time and transmits the pressure signal to the hydraulic compensating actuator 12. The hydraulic compensating actuator 12 compares the monitored pressure value with the preset value. If the monitored pressure value is lower than the preset value, the hydraulic compensating actuator 12 sends a control signal to the pressure regulating valve to increase the valve opening and increase the flow rate of the high-pressure liquid, thereby increasing the molding pressure. If the monitored pressure value is higher than the preset value, the hydraulic compensating actuator 12 sends a control signal to the pressure regulating valve to decrease the valve opening and decrease the flow rate of the high-pressure liquid, thereby reducing the molding pressure. Under the precise control of the molding pressure, the high-pressure liquid causes the blank of the front crossbeam to undergo plastic deformation in the cavity 8 of the molding mold to form the required positioning hole shape.

[0026] Reference Figure 1 and Figure 4 In a preferred embodiment, a connecting block 3 is connected to the outer wall of the upper mold 2, a guide frame 4 is provided on the connecting block 3, and a fixing block 5 is provided on the top of the guide frame 4.

[0027] Specifically, the guide frame 4 provides a precise guiding path for the movement of the upper mold 2. During the molding process, the upper mold 2 needs to perform actions such as pressing down and closing the mold according to a specific trajectory. The guide frame 4 ensures that the upper mold 2 does not shift or wobble during the movement, ensuring accurate alignment between the upper mold 2 and the lower mold 1, improving the mold closing accuracy, and thus ensuring the quality and dimensional accuracy of the high-pressure positioning hole forming in the front crossbeam of the front subframe. The combined use of the connecting block 3 and the guide frame 4 further enhances the positioning effect of the upper mold 2. Through cooperation with the lower mold 1 and other related components, the upper mold 2 can be positioned accurately when the mold is closed. This ensures the stability of the relative positions of the components during the molding process, which helps improve the consistency and pass rate of the molded products. Simultaneously, the connecting block 3 connects the upper mold 2 and the guide frame 4, supporting part of the upper mold 2's structure. This allows the upper mold 2 to maintain structural stability during movement and molding, withstand various forces generated during molding, and prevent deformation or damage due to uneven stress. This fixing method ensures that the upper mold 2 can stably receive external power and move according to predetermined pressure and speed, while also guaranteeing the overall stability and safety of the entire molding device during operation.

[0028] Reference Figure 1 and Figure 3 In a preferred embodiment, the auxiliary circulation mechanism includes return pipes 7 disposed at both ends of the cavity 8.

[0029] Specifically, during the high-pressure positioning hole forming process in the front crossbeam of the front subframe, the liquid flows and is pressured within the cavity 8. The return pipe 7 is located at both ends of the cavity 8, which promotes the circulation of liquid between the cavity 8 and the hydraulic system. This helps to balance the pressure in different parts of the cavity 8, avoids forming defects caused by excessively high or low local pressure, and ensures the uniformity and stability of pressure during the forming process, thereby improving the forming quality of the positioning hole. At the same time, during the forming process, the liquid temperature may vary due to various factors such as frictional heat generation and uneven heat transfer. The return pipe 7, through liquid circulation, can transport the higher-temperature liquid in the cavity 8 to the outside for cooling, and simultaneously re-transport the cooled liquid to the hydraulic system, making the liquid temperature in the cavity 8 more uniform. A uniform temperature distribution helps to reduce material property changes and forming stress caused by temperature gradients, prevents deformation and cracking after the positioning hole is formed, and improves the performance and reliability of the product.

[0030] Among them, cavity 8 is higher in the middle and lower on both sides.

[0031] Specifically, the blank of the front crossbeam of the front subframe is placed into the forming mold, the upper mold 2 and the lower mold 1 are closed, and high-pressure liquid is injected into the cavity 8 of the forming mold through the liquid delivery pipe 9 for internal high-pressure punching. The internal design of the not completely horizontal cavity 8 helps to achieve reasonable liquid flow and stress distribution, and also reduces the probability of defects during the forming process. This reduces rework and scrap rates caused by defects, thereby improving the efficiency of the entire forming process and reducing production costs.

[0032] Reference Figure 1 and Figure 3 In a preferred embodiment, a worktable 6 is provided at the bottom of the lower mold 1, and the interior of the worktable 6 is connected to a hydraulic system.

[0033] Specifically, the workbench 6 provides a stable support base for the lower mold 1, ensuring that the lower mold 1 can maintain a stable position and posture during the forming process, withstand the downward pressure of the upper mold 2 and various forces generated during the forming process, and prevent the lower mold 1 from moving or deforming due to force, thereby ensuring the smooth progress of the high-pressure positioning hole forming process in the front crossbeam of the front subframe, providing a guarantee for the accurate mold closing of the upper mold 2 and the lower mold 1, and ensuring that the dimensional accuracy and shape accuracy of the formed positioning hole meet the requirements.

[0034] The upper mold 2 fits into the lower mold 1.

[0035] Specifically, the upper mold 2 and the lower mold 1 fit together precisely when the molds are closed, ensuring the stability of the size and shape of the cavity 8 during the molding process. The fit of the molds ensures the integrity and accuracy of the shape of the positioning holes, avoiding problems such as deformation and twisting, so that the shape of the positioning holes after molding meets the design expectations and satisfies the product's usage requirements. At the same time, the close fit of the upper mold 2 and the lower mold 1 forms a closed cavity 8 space, allowing the liquid to punch evenly under stable pressure and environment, reducing the plastic deformation of the positioning holes caused by mold gaps, thereby improving the quality of the molded parts.

[0036] Working principle: During use, the blank of the front crossbeam of the front subframe is placed into the cavity 8. The upper mold 2 moves downward along the precise guide path provided by the guide frame 4. The connecting block 3 and the guide frame 4 ensure that the upper mold 2 does not deviate or wobble during the movement and is accurately aligned with the lower mold 1 to perform the pressing and mold closing action. The multi-stage pressure control mechanism starts to work. The pressure ring 10 monitors the pressure in the cavity 8 in real time. The hydraulic compensating actuator 12 adjusts the flow rate of the high-pressure liquid by controlling the pressure regulating valve based on the comparison between the monitored value and the preset value, thereby controlling the molding pressure. High-pressure liquid is injected into the cavity 8 of the molding mold through the liquid delivery pipe 9. Under the precise control of the molding pressure, the high-pressure liquid causes the blank of the front crossbeam to undergo plastic deformation in the cavity 8 of the molding mold, forming the required positioning hole shape. During the molding process, the return pipe 7 promotes the circulation of liquid between the cavity 8 and the hydraulic system, balances the pressure in the cavity 8, and adjusts the temperature of the liquid in the cavity 8 to make it more uniform. After the positioning hole is formed, the upper mold 2 moves upward and separates from the lower mold 1, and the formed front crossbeam of the front subframe is taken out.

[0037] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A pressure control device for forming high-pressure positioning holes in the front crossbeam of a front subframe, comprising an upper mold (2), a lower mold (1), and a worktable (6), characterized in that, Also includes: Multi-stage pressure control mechanism: The multi-stage pressure control mechanism includes a cavity (8) set on the lower mold (1), a plurality of liquid conveying pipes (9) set on the cavity (8), a positioning pin (11) set inside the liquid conveying pipes (9), a pressure ring (10) set at the top of the liquid conveying pipes (9), a hydraulic compensation actuator (12) connected to the bottom outer wall of the pressure ring (10), and a deformation analysis module (13) set on the bottom outer wall of the pressure ring (10). The deformation analysis module (13) is used in conjunction with the hydraulic compensation actuator (12). Auxiliary circulation mechanism: The auxiliary circulation mechanism is set on the outer walls of both sides of the lower mold (1).

2. The high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe according to claim 1, characterized in that, A connecting block (3) is connected to the outer wall of the upper mold (2), a guide frame (4) is provided on the connecting block (3), and a fixing block (5) is provided on the top of the guide frame (4).

3. The high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe according to claim 1, characterized in that, The auxiliary circulation mechanism includes return pipes (7) at both ends of the cavity (8).

4. The high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe according to claim 1, characterized in that, The bottom of the lower mold (1) is provided with a worktable (6), and the interior of the worktable (6) is connected to the hydraulic system.

5. The high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe according to claim 3, characterized in that, The cavity (8) is higher in the middle and lower on both sides.

6. The high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe according to claim 1, characterized in that, The upper mold (2) fits into the lower mold (1).

7. The high-pressure positioning hole forming pressure control device in the front crossbeam of the front subframe according to claim 1, characterized in that, The pressure ring (10) is connected to the hydraulic compensation actuator (12) and the deformation analysis module (13), and works together with the positioning pin (11).

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