Light truck left and right side wall common mode double assembly mold

Abstract

This utility model relates to the field of automobile manufacturing, specifically to a dual-panel mold for the left and right side panels of a light truck. The structure is configured as follows: the left and right side panel outer parts are symmetrically arranged; a drawing process supplementary surface is set on the outer side of the overall panel; a drawing inner supplementary surface is set within the openings of the left and right side panel outer parts; blanking holes are set within the two openings on the left and right sides; three blanking holes are set on the sheet metal between the left and right side panel outer parts; an outer drawing rib is set between the left and right side panel outer parts and the drawing process supplementary surface; an inner drawing rib is set on the inner side of the drawing inner supplementary surface of the left and right side panel outer parts; and CH holes are located at the top and bottom of the left and right side panel outer parts, totaling four holes. This utility model achieves the dual-panel production purpose by purposefully splicing at the side panel threshold; it realizes the development of dual-panel side panels for light trucks through process and mold structure; and it reduces both development and production investment through this process and mold structure, thereby enhancing vehicle competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing, specifically to a double-panel mold for the left and right side panels of a light truck. Background Technology

[0002] As competition in the automotive industry intensifies, automakers are constantly exploring cost reduction and efficiency improvement, leading to a growing demand for cost reduction in mold investment and parts production. Truck side panel parts include a left side panel and a right side panel, both with openings and inner and outer surfaces. A four-stage mold is typically used: a drawing die + a trimming, punching, and shaping die + a trimming, punching, and shaping die + a trimming, punching, and flanging die. Patent CN112756454 A describes a process and structure for common mold production of side panel outer panels, using a single sheet of material for each, producing only one side panel at a time. This invention offers advantages in material saving and production cost control; however, only one side panel is produced at a time. Utility Model Content

[0003] The technical problem this utility model aims to solve is the design and mold structure of a co-molded double-panel process for the left and right side panels of light trucks. This process enables co-molded production, allowing for the production of both left and right side panels in each batch, thereby reducing mold development costs, raw material costs, and long-term manufacturing costs, ultimately achieving cost reduction and efficiency improvement. The specific technical solution is as follows: A dual-panel mold for the left and right side panels of a light truck is configured as follows: the left and right side panel outer plate parts are symmetrically arranged, and a drawing process supplementary surface is set on the outer side of the overall plate; a drawing inner supplementary surface is set inside the openings of the left and right side panel outer plate parts; blanking holes are set in the two openings on the left and right sides, and three blanking holes are set on the sheet metal between the left and right side panel outer plate parts; an outer drawing rib is set between the left and right side panel outer plates and the drawing process supplementary surface, and an inner drawing rib is set inside the drawing inner supplementary surface of the left and right side panel outer plates; CH holes are set at the top and bottom of the left and right side panel outer plates, for a total of four holes.

[0004] Furthermore, the aforementioned mold adopts a 4-step process: (1) OP10 drawing die: using sheet metal to draw into a drawn part including the left and right side outer panel parts; (2) OP20 trimming side trimming punching side punching shaping die: selective trimming to remove waste material and punching out positioning holes for OP30 and OP40 to provide positioning reference, and adopting a trimming and shaping process in the doorway; (3) OP30 trimming side trimming punching side punching side shaping die: selective trimming and selective punching of inner and outer waste material, and shaping of outer flange; (4) OP40 trimming side trimming punching side punching side shaping and flanging die: completing the remaining trimming and punching, shaping and optimizing the dimensions of the parts that need shaping, flanging at the hub, and separating the left and right sides of the side panel parts after this trimming step.

[0005] This utility model achieves the purpose of producing dual-panel side panels by intentionally splicing the panels at the side sills; it realizes the development of dual-panel side panels for light trucks through process and mold structure; and it reduces both development and production investment through this process and mold structure, thereby enhancing vehicle competitiveness. Attached Figure Description

[0006] Figure 1 Example 1: Truck right side panel outer part; Figure 2 Example 1: Truck left side panel parts; Figure 3 Example 1: Illustration of the double-panel construction process for the left and right sides of a truck. Figure 4 Example 1: CAE qualified display diagram of the double-panel drawn outer panels of the left and right sides of the truck; Figure 5 Example 1: A diagram illustrating the four-step process of double-panel construction for the left and right side panels of a truck; Figure 6 Example 1: Display diagram of the upper and lower structure of the double-panel four-stage mold for the left and right side panels of a truck.

[0007] Figure label: 1-Left side outer panel part; 2-Right side outer panel part; 3-Extra surface for drawing process; 4-Extra surface for drawing; 5-Outer boundary; 6-Inner blanking hole; 7-Inner boundary; 8-Middle blanking hole; 9-Inner drawing bead; 10-Inner and outer drawing bead; 11-Upper CH hole; 12-Lower CH hole; 13-Center point. Detailed Implementation

[0008] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0009] like Figure 1-2 As shown: The dimensions of the left and right side panels are 1469*1429*199. With the outer surfaces of the left and right side panels facing upwards, based on the shape of the parts, a four-stage manufacturing process is evaluated for the side panels. The parts are confirmed to be double-jointed at the threshold and analyzed in CAE simulation software to confirm the feasibility of forming. The parts are designed for drawing using external and internal pressure materials, with double pressure materials inside and outside the doorway. In the difficult-to-form double-jointed area of ​​the threshold, the distance is intentionally increased, and three blanking holes are set in the center to solve the formability problem. The dimensions of the formed parts are 0.7*1770*3470, which can be supplied by the steel mill.

[0010] Figure 3 The document showcases the double-panel drawing process setup for the left and right side panels. 1 and 2 represent the left and right side panel parts; 3 shows the outer process supplementary surface of the drawn part; 4 shows the inner supplementary surface, which is inside the doorway, with the left and right parts symmetrically positioned around the center; 5 shows the outer boundary of the material; 7 shows the inner boundary of the material, with symmetrical doorway design on the left and right sides; 6 shows the blanking hole at the inner boundary, along with three blanking holes as shown in 8; 9 and 10 represent the inner and outer drawing ribs, respectively; 11 and 12 show the CH hole design for the left and right parts, totaling four locations; 13 shows the center point of the double-panel part. The results obtained after CAE simulation process setup and calculation are shown below. Figure 4 .

[0011] Based on the aforementioned evaluation conditions, a detailed process plan for the four-stage mold of the left and right side panel double-panel process will be further developed to ensure that the part quality is achieved and production is stable and efficient under the condition that the process is feasible. The main steps are: 1. OP10 drawing die: using sheet metal to draw into a drawn part that includes the left and right side panel outer panel parts designed in CAE; 2. OP20 trimming, side trimming, punching, and shaping die: selectively trimming and removing waste material (including front trimming and side trimming), while punching positioning holes to provide positioning references for OP30 and OP40. The doorway adopts a pre-trimming and post-forming process in this sequence, that is, trimming and shaping; 3. OP30 trimming, punching, and shaping die: OP30 continues to selectively trim and punch the inner and outer scraps, and shapes the outer flange; 4. Trimming, punching, shaping, and flanging die: OP40 completes the remaining trimming and punching, and optimizes the dimensions of the parts that need shaping. Flanging is performed at the wheel hub. The side panel parts have been separated into left and right sides after trimming in this sequence; The four-sequence process of double-panel outer panels of the truck is shown as follows. Figure 5 As shown, the upper and lower structural molds of the 4-stage mold are displayed as follows. Figure 6 As shown.

[0012] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A double-panel mold for the left and right sides of a light truck, characterized in that: The structure is set up as follows: the left and right side outer panel parts are symmetrically arranged; the outer side of the overall plate is set as the external general process supplement surface for the drawn part; the doorway of the left and right side outer panel parts is set as the internal drawing supplement surface; the two doorways on the left and right sides are set as blanking holes; three blanking holes are set on the sheet metal between the left and right side outer panel parts; external drawing ribs are set between the left and right side outer panels and the external general process supplement surface for the drawn part; internal drawing ribs are set on the inner side of the internal drawing supplement surface of the left and right side outer panels; CH holes are set at the top and bottom of the left and right side outer panels, for a total of four.

2. The light truck left and right side co-molded double-panel mold according to claim 1, characterized in that: The aforementioned mold adopts a 4-step process: (1) OP10 drawing die: using sheet metal to draw into a drawing part including left and right side outer panel parts; (2) OP20 trimming side trimming punching side punching shaping die: selective trimming to remove waste material and punching out positioning holes for OP30 and OP40 to provide positioning reference. The door opening adopts a process of trimming first and then shaping; (3) OP30 trimming side trimming punching side punching side shaping die: selective trimming and selective punching of inner and outer waste materials, shaping of outer flange; (4) OP40 trimming side trimming punching side punching side shaping and flanging die: completing the remaining trimming and punching, shaping and optimizing the size of the parts that need shaping, flanging at the hub, and the side panel parts are separated into left and right sides after this trimming step.

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