A gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams

Abstract

This utility model provides a gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams, relating to the field of automotive parts processing mold technology. It includes: a base, with a controller installed inside; four threaded holes at the lower end of the base, with adjustable feet threaded into the holes; a control button installed on the base, electrically connected to the controller inside the base; and a sliding plate that can slide back and forth on the upper end of the base. This utility model achieves stable clamping and flexible force control of the die body through components such as bearing cylinders and rotating rods in conjunction with a first hydraulic rod. Position and pressure sensors are linked with the controller to achieve dynamic intelligent control of cold forming pressure, improving product qualification rate. The gradient pressure die structure, combined with the top die and guide rod, effectively counteracts material springback stress, improving forming accuracy. The elastic downward pressure structure composed of a screw, spring, and lower pressure plate ensures stable pressure and allows for rapid loading and unloading of workpieces, improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing mold technology, and in particular to a gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams. Background Technology

[0002] In the automotive manufacturing industry, the crossbeam, as a key structural component, plays a crucial role in the overall strength, stability, and safety of the vehicle. Cold forming technology, due to its advantages such as high production efficiency, high material utilization, and good forming precision, is widely used in the processing and manufacturing of automotive crossbeams. This utility model is a gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams.

[0003] In existing technologies, it is difficult to flexibly control the clamping force according to the concave mold points of different specifications of automobile crossbeams, which can easily lead to problems such as insecure clamping or over-clamping that damages the mold. Utility Model Content

[0004] This disclosure relates to a gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams, in order to solve the technical problems mentioned in the background art.

[0005] The first aspect of this disclosure provides a gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams, specifically comprising: a base; a controller is installed inside the base, four threaded holes are provided at the lower end of the base, adjustable feet are screwed into the threaded holes, a control button is installed on the base, the control button is electrically connected to the controller inside the base, a sliding plate is installed at the upper end of the base and can slide back and forth, two pillars are installed at the lower end of the sliding plate, a first hydraulic rod is installed on each of the two pillars, and two bearing cylinders are installed on the sliding plate, a rotating rod is installed inside the bearing cylinder, a clamping plate is installed at the upper end of the rotating rod, a connecting plate is installed at the lower end of the rotating rod, the connecting plate is connected to the piston rod of the first hydraulic rod, a die body is installed on the sliding plate, six rear positioning blocks are installed at the rear end of the die body, and four front positioning blocks are installed at the front end of the die body.

[0006] In at least some embodiments, a lead screw is mounted on the base via a bearing, and a motor is mounted on the base. The output shaft of the motor is connected to the front end of the lead screw. A base plate is fixed to the lower end of the sliding plate, and a threaded cylinder is mounted on the base plate via bolts. The threaded cylinder is threadedly engaged with the lead screw.

[0007] In at least some embodiments, four guide rods are fixed on the die body, and a top die slides on the four guide rods.

[0008] In at least some embodiments, a support is mounted on the base, and a position sensor is mounted on the support.

[0009] In at least some embodiments, a bracket is mounted on the base, a second hydraulic rod is mounted on the bracket, and a sliding lifting plate is mounted on the bracket.

[0010] In at least some embodiments, a mounting base is fixed to the lower end of the landing plate, and a pressure sensor is installed at the lower end of the mounting base.

[0011] In at least some embodiments, four screws are mounted on the landing plate, a pressure plate is mounted on the lower end of the four screws, and a spring is mounted on each of the four screws.

[0012] This utility model provides a gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams, which has the following beneficial effects:

[0013] In this invention, the adjustable feet design enables the equipment to remain stable in different ground environments, ensuring the reference accuracy of the cold forming process. The screw drive, in conjunction with the motor, enables precise forward and backward movement of the sliding plate. The position of the die can be flexibly adjusted according to processing requirements to meet diverse production needs. The bearing cylinder, rotating rod, and clamping plate, in conjunction with the first hydraulic rod, can achieve stable clamping of the mold workpiece at multiple angles and positions, and can flexibly control the clamping force through hydraulic power, adapting to the clamping requirements of different specifications of automotive crossbeam molds. The position sensor monitors the position information of key components such as the sliding plate in real time, providing data support for precise control. The pressure sensor provides real-time feedback of pressure data during the forming process. In conjunction with the controller and control buttons, dynamic monitoring and intelligent control of the cold forming pressure can be achieved, ensuring stable pressure and accurate parameters throughout the entire processing process, effectively avoiding product defects caused by abnormal pressure, and improving the product qualification rate.

[0014] Furthermore, in this invention, the gradient pressure die structure, combined with the top die and guide rod, can apply precise reverse pressure by sliding the top die along the guide rod during the cold forming process. This effectively counteracts the springback stress of the material, significantly improves the forming accuracy of the automotive crossbeam, reduces dimensional deviations and shape errors caused by springback, and enhances product quality.

[0015] Furthermore, in this invention, the elastic pressing structure composed of the screw, spring, and lower pressure plate can ensure stable pressure on the workpiece while enabling rapid loading and unloading of the workpiece, reducing auxiliary production time and improving production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0018] In the attached diagram:

[0019] Figure 1 A schematic diagram of the overall front-end structure of this application is shown.

[0020] Figure 2 A schematic diagram of the overall backend structure of this application is shown.

[0021] Figure 3 This application shows Figure 2 A magnified structural diagram of part A in the middle.

[0022] Figure 4 This application shows Figure 1 A magnified structural diagram of part B.

[0023] Figure 5 A schematic diagram of the sliding plate portion of this application is shown.

[0024] Figure 6 A schematic diagram of the die body portion of this application is shown.

[0025] Figure 7 This application shows Figure 1 A magnified structural diagram of section C.

[0026] List of reference numerals

[0027] 1. Base; 11. Adjustable feet; 12. Control button; 14. Support; 141. Position sensor; 15. Lead screw; 151. Motor; 2. Sliding plate; 21. Base plate; 211. Threaded cylinder; 22. Support column; 221. First hydraulic rod; 23. Bearing cylinder; 231. Rotating rod; 232. Clamping plate; 233. Connecting plate; 3. Die body; 31. Rear positioning block; 32. Front positioning block; 33. Guide rod; 34. Top mold; 4. Bracket; 41. Second hydraulic rod; 42. Lifting plate; 421. Fixed seat; 422. Screw; 423. Lower pressure plate; 4211. Pressure sensor. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] Please refer to Figures 1 to 7 Example 1:

[0030] This utility model proposes a gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams, comprising: a base 1; a controller is installed inside the base 1, four threaded holes are provided at the lower end of the base 1, and adjustable feet 11 are screwed into the threaded holes; a control button 12 is installed on the base 1, and the control button 12 is electrically connected to the controller inside the base 1; a sliding plate 2 that can slide back and forth is installed at the upper end of the base 1; two support pillars 22 are installed at the lower end of the sliding plate 2, and a first hydraulic rod 221 is installed on each of the two support pillars 22; two bearing cylinders 23 are installed on the sliding plate 2, and a rotating rod 231 is installed inside the bearing cylinder 23; a clamping plate 232 is installed at the upper end of the rotating rod 231, and a connecting plate 233 is installed at the lower end of the rotating rod 231, the connecting plate 233 being connected to the piston rod of the first hydraulic rod 221; a die body 3 is installed on the sliding plate 2; six rear positioning blocks 31 are installed at the rear end of the die body 3; and four front positioning blocks 32 are installed at the front end of the die body 3.

[0031] In this embodiment, a lead screw 15 is mounted on the base 1 via bearings, and a motor 151 is also mounted on the base 1. The output shaft of the motor 151 is connected to the front end of the lead screw 15. A base plate 21 is fixed to the lower end of the sliding plate 2, and a threaded cylinder 211 is mounted on the base plate 21 via bolts. The threaded cylinder 211 is threadedly engaged with the lead screw 15. Its function is as follows: the lead screw 15 mounted on the base 1 via bearings engages with the motor 151 mounted on the base 1. The output shaft of the motor 151 is connected to the front end of the lead screw 15, which can convert the rotational motion of the motor 151 into the rotation of the lead screw 15. The threaded cylinder 211 is bolted to the base plate 21 fixed to the lower end of the sliding plate 2. The threaded cylinder 211 is threadedly engaged with the lead screw 15, so that when the lead screw 15 rotates, it drives the threaded cylinder 211 and the sliding plate 2 connected to it to slide back and forth precisely through threaded transmission, thereby realizing the precise adjustment of the position of the die body 3 mounted on the sliding plate 2, and meeting the diverse needs of the die position in different processing scenarios.

[0032] In this embodiment, four guide rods 33 are fixed on the die body 3, and a top die 34 slides on the four guide rods 33. The function of the top die 34 is as follows: the four guide rods 33 fixed on the die body 3 provide a precise sliding guide track for the top die 34. The top die 34 can slide up and down along the guide rods 33. During the cold forming process, it forms a gradient pressure range with the die body 3, which can apply an adjustable reverse support force according to the forming requirements of the workpiece, effectively offsetting the springback stress generated during the cold deformation of the material. At the same time, the rigid support of the guide rods 33 ensures the positional accuracy of the top die 34 when sliding, making the pressure distribution of the top die 34 on the workpiece more uniform, thereby improving the dimensional accuracy and surface quality of the cold forming of the automotive crossbeam.

[0033] In this embodiment, a support 14 is installed on the base 1, and a position sensor 141 is installed on the support 14. The function of the support 14 on the base 1 is to provide stable support for the position sensor 141. The position sensor 141 installed on the support 14 can monitor the position information of key components such as the sliding plate 2 in real time during the cold forming process, and feed the monitoring data back to the controller inside the base 1 in real time. Based on these precise position data and combined with preset processing parameters, the controller precisely controls the drive components such as the motor 151 through the control button 12 to achieve precise calibration of the position of the sliding plate 2 and dynamic adjustment of the position of the die body 3. This ensures that each component is always in the ideal working position during the cold forming process of the automotive crossbeam, effectively improving the accuracy and stability of the cold forming process and avoiding product quality problems caused by component position deviations.

[0034] In Example 2, based on Example 1, a bracket 4 is installed on the base 1, a second hydraulic rod 41 is installed on the bracket 4, and a sliding lifting plate 42 is installed on the bracket 4. A fixed seat 421 is fixed to the lower end of the lifting plate 42, and a pressure sensor 4211 is installed at the lower end of the fixed seat 421. The function of this is that the bracket 4 installed on the base 1 provides a stable support foundation for the second hydraulic rod 41 and the lifting plate 42. The second hydraulic rod 41 installed on the bracket 4 can drive the lifting plate 42 to slide up and down along the bracket 4, realizing flexible adjustment of the height position of the lifting plate 42 to adapt to the cold forming process of different specifications of automotive crossbeams. The mounting base 421 fixed at the lower end of the lifting plate 42 provides a mounting carrier for the pressure sensor 4211. The pressure sensor 4211 can monitor the pressure applied to the workpiece in real time and accurately, and feed the pressure data back to the controller inside the base 1. The controller dynamically adjusts the output pressure of the second hydraulic rod 41 through the control button 12 according to the preset pressure parameters and the actual feedback data, thereby realizing closed-loop precise control of the cold forming pressure, ensuring that the pressure is stable and uniform throughout the cold forming process, effectively suppressing the springback phenomenon in the cold forming process of automobile crossbeams, and improving product forming quality and production efficiency.

[0035] In Example 3, based on Examples 1 and 2, four screws 422 are installed on the lifting plate 42, and a lower pressure plate 423 is installed at the lower end of the four screws 422. Springs are installed on each of the four screws 422. The function of the springs is that the four screws 422 installed on the lifting plate 42 are connected to the lower pressure plate 423 at the lower end, and together with the springs installed on the screws 422, they form an elastic pressing structure. During cold forming operations, the springs can provide a buffering effect to prevent the lower pressure plate 423 from applying rigid impact to the workpiece and ensure that the pressure is applied smoothly to the surface of the workpiece.

[0036] The working principle of this embodiment is as follows: The level of the equipment is adjusted by the adjustable feet 11 at the lower end of the base 1 to ensure the stability of the cold forming reference surface. The controller inside the base 1 is started, and the control button 12 is operated to drive the motor 151 to run. The motor 151 drives the lead screw 15 to rotate. Through the threaded engagement between the threaded cylinder 211 and the lead screw 15, the sliding plate 2 is driven to slide back and forth along the base 1, adjusting the die body 3 to the initial processing position. At the same time, the position sensor 141 on the support 14 monitors the position of the sliding plate 2 in real time and feeds it back to the controller to complete the equipment initialization calibration. The automobile crossbeam blank is placed on the die body 3. The first hydraulic rod 221 pushes the connecting plate 233 to drive the rotating rod 231 to rotate, so that the clamping plate 232 clamps the die body 3. The rear positioning block 31 and the front positioning block 32 at the front and rear ends of the die body 3 position the workpiece. The position is ensured to be fixed during the cold forming process. The second hydraulic rod 41 on the bracket 4 drives the lifting plate 42 to slide down along the bracket 4, so that the lower pressure plate 423 presses down on the top mold 34. The spring on the screw 422 provides elastic buffer to avoid rigid impact. At the same time, the top mold 34 slides along the guide rod 33 to form a gradient pressure zone with the die body 3, and applies a reverse support force to the workpiece. During the forming process, the pressure sensor 4211 at the lower end of the fixed seat 421 monitors the forming pressure in real time, and the position sensor 141 monitors the displacement of the sliding plate 2. The data is synchronously transmitted to the controller. The controller dynamically adjusts the speed of the motor 151 and the output pressure of the second hydraulic rod 41 according to the preset parameters. The die position is finely adjusted by the lead screw 15, and the reverse pressure is adjusted by the sliding of the top mold 34 to accurately offset the springback stress generated by the cold deformation of the material, so as to achieve high-precision forming.

[0037] The following points should be noted in this article:

[0038] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0039] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0040] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams, comprising: A base (1); characterized in that a controller is installed inside the base (1), four threaded holes are provided at the lower end of the base (1), and adjustable feet (11) are threaded into the threaded holes. A control button (12) is installed on the base (1), and the control button (12) is electrically connected to the controller inside the base (1). A sliding plate (2) is installed at the upper end of the base (1) and can slide back and forth. Two support columns (22) are installed at the lower end of the sliding plate (2), and a first hydraulic rod (221) is installed on each of the two support columns (22). Two bearing cylinders (23) are installed on the moving plate (2). A rotating rod (231) is installed inside the bearing cylinder (23). A clamping plate (232) is installed at the upper end of the rotating rod (231). A connecting plate (233) is installed at the lower end of the rotating rod (231). The connecting plate (233) is connected to the piston rod of the first hydraulic rod (221). A die body (3) is installed on the sliding plate (2). Six rear positioning blocks (31) are installed at the rear end of the die body (3). Four front positioning blocks (32) are installed at the front end of the die body (3).

2. The gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams according to claim 1, characterized in that, A lead screw (15) is mounted on the base (1) via a bearing, and a motor (151) is mounted on the base (1). The output shaft of the motor (151) is connected to the front end of the lead screw (15). A base plate (21) is fixed to the lower end of the sliding plate (2). A threaded cylinder (211) is mounted on the base plate (21) via bolts. The threaded cylinder (211) is threadedly engaged with the lead screw (15).

3. The gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams according to claim 1, characterized in that, Four guide rods (33) are fixed on the die body (3), and a top die (34) slides on the four guide rods (33).

4. The gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams according to claim 2, characterized in that, A support (14) is installed on the base (1), and a position sensor (141) is installed on the support (14).

5. The gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams according to claim 4, characterized in that, A bracket (4) is installed on the base (1), a second hydraulic rod (41) is installed on the bracket (4), and a sliding lifting plate (42) is installed on the bracket (4).

6. The gradient pressure die structure for suppressing springback during cold forming of automotive crossbeams according to claim 5, characterized in that, The lower end of the landing plate (42) is fixed with a mounting base (421), and a pressure sensor (4211) is installed at the lower end of the mounting base (421).

7. The gradient pressure die structure for suppressing springback in cold forming of automotive crossbeams according to claim 6, characterized in that, The lifting plate (42) is equipped with four screws (422), and the lower end of the four screws (422) is equipped with a pressure plate (423). Each of the four screws (422) is also equipped with a spring.

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