Forming die for double-layer longitudinal beam of chassis of heavy truck

Abstract

Compared with the prior art, the forming die for the double-layer longitudinal beam of the chassis of the heavy truck further comprises side pressing plates and jacks, the side pressing plates are respectively fixed on two sides of the upper die and / or the lower die and used for increasing lateral support for a workpiece, and the jacks are used for supporting and fixing each side pressing plate. The forming die technology has the advantages of high-precision forming, modular design, stable lateral supporting and enhanced structural strength, through the precise bending angle design, the influence of material resilience is eliminated, it is ensured that a workpiece reaches an ideal forming angle, and the production efficiency is improved. Meanwhile, through the modular structure of the middle part, the outer side part and the adjusting part, the die can flexibly meet the requirements of workpieces of different specifications and is convenient to maintain and replace, in addition, the side pressing plate and the jack provide stable lateral support, the workpieces are effectively prevented from displacing in the pressing process, the die is made of high-strength materials, the service life is prolonged, and the production cost is reduced. And material waste is reduced, and economical efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber connectors, in particular to a forming die for a double-layer longitudinal beam of a heavy truck chassis. Background Art

[0002] With the increasing electrification of heavy-duty trucks, chassis design must balance factors such as the vehicle's load-bearing capacity and battery weight. The use of high-strength double-layer C-shaped steel longitudinal beams effectively improves chassis strength and durability, meeting the needs of new energy heavy-duty trucks for long-distance and heavy-load transport. Structural Optimization and Enhanced Safety: The double-layer C-shaped structure not only enhances chassis structural stability but also optimizes material utilization and safety. For new energy heavy-duty trucks, this structural design provides a solid foundation for vehicle safety and stability while also aligning with environmental protection and lightweighting trends.

[0003] Our experimental team has been extensively researching and documenting technologies related to heavy-duty truck chassis. Drawing on relevant resources and conducting numerous experiments, we discovered that existing technologies for new energy heavy-duty truck chassis utilize double-layer, C-shaped high-strength steel. The chosen material, LG980LE, has a yield strength Rp0.2 ≥ 900mPa, a strength limit Rm ≥ 980mPa, an elongation A ≥ 12%, and an impact energy J ≥ 27. This high material strength, coupled with the significant difficulty of forming the double-layer structure, makes it difficult for traditional single-layer steel sheet forming processes to meet these requirements.

[0004] The present invention is made in order to solve the problems commonly existing in the art such as complex molding process and difficult springback control. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies in the current field and to propose a forming die for a double-layer longitudinal beam of a heavy truck chassis.

[0006] In order to overcome the deficiencies of the prior art, the present invention adopts the following technical solutions:

[0007] A forming die for a double-layer longitudinal beam of a heavy truck chassis comprises an upper die, a lower die relatively fixed below the upper die, and a press providing downward pressure to push the upper die to press and form a workpiece.

[0008] Furthermore, the forming mold also includes side pressure plates fixed on both sides of the upper mold and / or lower mold for increasing lateral support for the workpiece. The side pressure plates are used to prevent the workpiece from moving laterally under pressure, ensuring that the position of the workpiece remains stable during the forming process.

[0009] Furthermore, the forming mold also includes a jack for supporting and fixing each side pressure plate. The jack supports the side pressure plate and provides a stable lateral support force to ensure that the side pressure plate can firmly clamp both sides of the workpiece during the pressing process and prevent the side pressure plate from shifting when pressure is applied. This design improves the stability of the lateral support and helps maintain the forming accuracy of the workpiece.

[0010] The beneficial effects achieved by the utility model are:

[0011] 1. Both the upper and lower dies are designed with a bending angle of 170°. By eliminating the material springback effect, the workpiece finally reaches the designed bending angle of 176.7°, thereby ensuring the forming accuracy, effectively reducing the workpiece scrap caused by springback, reducing material waste, and meeting the high requirements of workpiece shape and size.

[0012] 2. The side pressure plates and jacks provide reliable lateral support for the workpiece during the molding process, preventing lateral movement. This design ensures the workpiece's position remains stable even during high-pressure pressing, thereby improving molding process stability and product consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but rather the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0014] Figure 1 It is a schematic diagram of the overall experiment of the present utility model.

[0015] Figure 2 It is a schematic structural diagram of the utility model as a whole.

[0016] Figure 3 It is a schematic diagram of the main structure of the entire utility model.

[0017] Figure 4 It is a side view structural diagram of the entire utility model.

[0018] Figure 5 It is a partial structural schematic diagram of the upper mold of the present utility model.

[0019] Explanation of the accompanying figures: 1-press; 2-upper die; 3-jack; 4-side pressure plate; 5-lower die; 6-workpiece; 7-bottom gasket; 8-bending angle; 9-outer component; 10-middle component. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with its embodiments; it should be pointed out that the specific embodiments described herein are only used to explain the present invention and are not used to limit this case. For those skilled in the art, after reviewing the detailed description below, other systems, methods and / or features of this embodiment will become apparent. In addition, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as limiting this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0021] Example 1: Combined with the attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 and attached Figure 5 This embodiment constructs a forming die for a double-layer longitudinal beam of a heavy truck chassis. The forming die includes an upper die 2, a lower die 5 fixed relatively below the upper die 2, and a press 1 that provides downward pressure to push the upper die 2 to press the workpiece 6.

[0022] The molding die further includes side pressure plates 4 fixed to both sides of the upper mold 2 and / or the lower mold 5 for increasing lateral support for the workpiece 6. The side pressure plates 4 are used to prevent the workpiece 6 from moving laterally under pressure, thereby ensuring that the position of the workpiece 6 remains stable during the molding process.

[0023] The molding die also includes a jack 3 that supports and fixes each side pressure plate 4. The jack 3 supports the side pressure plate 4 and provides stable lateral support force, ensuring that the side pressure plate 4 can firmly clamp both sides of the workpiece 6 during the pressing process and prevent the side pressure plate 4 from moving when pressure is applied. This design improves the stability of the lateral support and helps maintain the molding accuracy of the workpiece 6.

[0024] The upper die 2 includes a middle part 10, outer parts 9 located on both sides of the middle part 10, and an adjusting part for adjusting the overall width of the upper die 2. An outer part 9 is provided on each side of the middle part 10, wherein the middle part 10 includes four 50mm thick Q355B steel plates, and the four 50mm thick Q355B steel plates are vertically and closely attached to each other. Each outer part 9 includes two 30mm thick NM400 steel plates. The adjusting part is made of 5mm, 6mm and / or 8mm thick LG980LE material. The adjusting part is used to adjust the actual width of the upper die 2 to achieve the forming operation of the actual workpiece 6. The specific number and type of the adjusting parts are not limited here.

[0025] The upper die 2 is provided with two bending angles 8, each of which is a 170° bending angle, so that the workpiece 6 reaches the required 176.7° bending angle during pressing, thereby eliminating the influence of the material rebound of the workpiece 6 on the forming angle.

[0026] The intermediate component 10, the outer component 9 and the adjustment component are fixed together by means of mechanical connections such as bolts, pins and / or positioning blocks.

[0027] The lower die 5 includes an intermediate component located at the bottom, outer components located on both sides of the intermediate component, an adjustment component for adjusting the overall width of the lower die 5 and a bottom gasket 7. An outer component is provided on each side of the intermediate component. The intermediate component includes four vertically fitted 50mm thick Q355B steel plates, each outer component includes two 30mm thick NM400 steel plates, and the middle width adjustment part adopts 5mm, 6mm and / or 8mm thick LG980LE material. The adjustment component is used to adjust the actual width of the lower die 5 to realize the forming operation of the actual workpiece 6, and the specific number and type of the adjustment component are not limited here. The bottom gasket 7 horizontally supports the bottom of the intermediate component, the outer component and the adjustment component.

[0028] The top of the lower die 5 is provided with two bending angles 8, each of which is a 170° bending angle, corresponding to the bending angle 8 of the upper die 2, so as to match the workpiece 6 to achieve the design requirement of a 176.7° bending angle during the forming process.

[0029] The intermediate component, the outer component and the adjustment component are fixed together by means of mechanical connections such as bolts, pins and / or positioning blocks.

[0030] 8mm and 5mm thick high-strength steel plates are bent and formed respectively by the forming die of the utility model to obtain 8mm and 5mm C-shaped steel plates, which are then stacked. The formed 8mm and 5mm C-shaped steel plates are evenly fixed with high-strength bolts and further pressed and formed by the forming die of the utility model to obtain double-layer C-shaped high-strength steel longitudinal beams for heavy truck chassis.

[0031] The forming mold technology of the present invention has high-precision forming, modular design, stable lateral support and enhanced structural strength. Through the precise bending angle 8 design, the influence of material rebound is eliminated to ensure that the workpiece 6 reaches the ideal forming angle. At the same time, the modular structure of the middle component 10, the outer component 9 and the adjustment component enables the mold to flexibly adapt to the needs of workpieces 6 of different specifications, which is convenient for maintenance and replacement. In addition, the side pressure plate 4 and the jack 3 provide stable lateral support, effectively preventing the workpiece 6 from being displaced during the pressing process. The mold uses high-strength materials, which extends the service life, reduces material waste, and improves economy.

[0032] Although the present invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the present invention. That is, the methods, systems and devices discussed above are examples. Various configurations can appropriately omit, replace or add various processes or components. For example, in alternative configurations, the method can be performed in an order different from the order described, and / or various components can be added, omitted and / or combined. Moreover, the features described with respect to certain configurations can be combined in various other configurations, such as different aspects and elements of the configuration can be combined in a similar manner. In addition, as technology develops, the elements therein can be updated, that is, many elements are examples and do not limit the scope of the present disclosure or the claims. It should also be understood that after reading the contents of the disclosure of the present invention, technicians can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

Claims

1. A forming die for a double-layer longitudinal beam of a heavy truck chassis, characterized in that: The forming die includes an upper die, a lower die fixed relatively below the upper die, and a press that provides downward pressure to push the upper die to press the workpiece. The upper mold includes a middle component, outer components located on both sides of the middle component, and an adjusting component for adjusting the overall width of the upper mold. An outer component is provided on each side of the middle component, wherein the middle component includes four 50mm thick Q355B steel plates, and the four 50mm thick Q355B steel plates are vertically and closely attached to each other. Each outer component includes two 30mm thick NM400 steel plates, and the adjusting component is made of 5mm, 6mm or 8mm thick LG980LE material.

2. The molding die according to claim 1, wherein: The forming mold also includes side pressure plates fixed on both sides of the upper mold and / or lower mold for increasing lateral support for the workpiece. The side pressure plates are used to prevent the workpiece from moving laterally under pressure, ensuring that the position of the workpiece remains stable during the forming process.

3. The molding die according to claim 2, wherein: The forming mold also includes a jack for supporting and fixing each side pressure plate. The jack supports the side pressure plate, providing a stable lateral support force to ensure that the side pressure plate can firmly clamp both sides of the workpiece during the pressing process and prevent the side pressure plate from shifting when pressure is applied. This design improves the stability of the lateral support and helps maintain the forming accuracy of the workpiece.

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