Automobile rear wheel cover inner plate drawing die

By designing a drawing die for the inner panel of a car rear wheel arch, and using a cylinder to drive the upper die unit to contact the lower die unit for segmented drawing, the problem of poor drawing effect caused by the simultaneous forming of the inner panel body and the pressing edge is solved, thus improving the forming quality.

CN224406172UActive Publication Date: 2026-06-26NANJING QIAOFENG AUTOMOBILE PARTS TECH & R&D CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING QIAOFENG AUTOMOBILE PARTS TECH & R&D CO LTD
Filing Date
2025-07-10
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In the existing technology, when the inner panel of the rear wheel arch of an automobile is formed in two parts, the inner panel body and the pressing edge, at the same time, it leads to the problem of poor drawing effect.

Method used

A drawing die for the inner panel of a car rear wheel arch is used. The upper die unit is moved downward by a cylinder so that it contacts the first recess of the lower die unit for extrusion molding. The inner panel is pressed by the first recess and then contacts the third recess for segmented drawing to ensure the drawing effect.

Benefits of technology

This technology enables segmented drawing of the inner panel of the rear wheel arch of automobiles, improving the drawing effect and ensuring the forming quality of the inner panel.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224406172U_ABST
    Figure CN224406172U_ABST
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Abstract

The utility model discloses an automobile rear wheel cover inner plate drawing die relates to the field of automobile rear wheel cover. The automobile rear wheel cover inner plate drawing die, including upper die unit and lower die unit, the lower die unit is installed on the press main part. The automobile rear wheel cover inner plate drawing die, through the cylinder drive upper die unit and move down, make upper die unit first and first lower concave seat contact, through upper die unit and first lower concave seat carry out rear wheel cover inner plate extrusion forming, position to the automobile rear wheel cover inner plate simultaneously, when upper die unit promotes first lower concave seat and continues to move down, when rear wheel cover inner plate and third lower concave seat contact, under the action of first lower concave seat, will rear wheel cover inner plate and press tightly, carry out sectional type drawing, cooperate third lower concave seat and guarantee the drawing effect of rear wheel cover inner plate.
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Description

Technical Field

[0001] This utility model relates to the field of automotive rear wheel arch technology, specifically a drawing die for the inner panel of an automotive rear wheel arch. Background Technology

[0002] The rear wheel arch cover is an important component of the car body structure, serving to prevent mud and water from splashing and to protect the car body structure.

[0003] When processing the inner panel of a car rear wheel arch, it is necessary to facilitate the drawing of the inner panel according to actual usage requirements. In the existing technology, the inner panel of the car rear wheel arch is stamped by a press during the processing of the car rear wheel arch, and the drawing is achieved at the same time during the stamping process. However, since the drawing of the car rear wheel arch is divided into two parts, the inner panel body and the pressing edge, the current method of forming and drawing at both places at the same time will cause the drawing on both sides to affect the drawing of the inner panel body, thus affecting the drawing effect. Therefore, we propose a drawing die for the inner panel of the car rear wheel arch. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a drawing die for the inner panel of a car rear wheel arch, which solves the problem that when drawing the rear wheel arch, which is divided into the inner panel body and the pressing edge, the drawing of both parts simultaneously causes the drawing of the two sides to affect the drawing of the inner panel body, thus affecting the drawing effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drawing die for the inner panel of a car rear wheel arch, comprising an upper die unit and a lower die unit. The lower die unit is mounted on the main body of a press, and the upper die unit is located directly above the lower die unit. A guide rod is provided on the main body of the press, and the upper die unit is slidably connected to the outer peripheral wall of the guide rod. A cylinder is mounted on the guide rod, and the output end of the cylinder is connected to the upper die unit. The lower die unit includes:

[0006] A connecting seat, which is installed on the main body of the press;

[0007] The first recessed seat is slidably connected in the connecting seat;

[0008] Two third recessed seats are slidably connected to the first recessed seat. The third recessed seats are located on both sides of the first recessed seat, and the initial position of the first recessed seat is above the third recessed seat.

[0009] Preferably, the bottom end face of the first recessed seat is provided with a plurality of first sliding rods, the first sliding rods are slidably connected to the inner wall of the connecting seat, and a first spring is sleeved on the outer peripheral wall of the first sliding rod, the two ends of the first spring being fixedly connected to the first recessed seat and the connecting seat respectively.

[0010] Preferably, a limiting seat is fixedly connected to the bottom end face of the first recessed seat.

[0011] Preferably, a second sliding rod is fixedly connected to the lower part of the third recessed seat, and the second sliding rod is slidably connected to the inner wall of the connecting seat.

[0012] Preferably, a second spring is sleeved on the outer peripheral wall of the limiting seat, and the two ends of the second spring are fixedly connected to the third recessed seat and the connecting seat, respectively.

[0013] Preferably, the upper mold unit includes a sliding frame, the top end face of which is mounted to the output end of the cylinder.

[0014] Preferably, the bottom end face of the sliding frame is equipped with a first upper protrusion and two second upper protrusions, with the second upper protrusions located on both sides of the first upper protrusion.

[0015] Preferably, the first upper convex seat is provided corresponding to the first lower concave seat, and the second upper convex seat is provided corresponding to the third lower concave seat.

[0016] This utility model discloses a drawing die for the inner panel of a car rear wheel arch, which has the following beneficial effects:

[0017] This automotive rear wheel arch inner panel drawing die uses a cylinder to drive the upper die unit downwards, causing the upper die unit to first contact the first recessed seat. The upper die unit and the first recessed seat then extrude and form the rear wheel arch inner panel, while simultaneously positioning it. As the upper die unit pushes the first recessed seat downwards, when the rear wheel arch inner panel contacts the third recessed seat, the first recessed seat presses the rear wheel arch inner panel together, performing segmented drawing. The third recessed seat ensures the drawing effect of the rear wheel arch inner panel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0020] Figure 2 This is a schematic diagram of the upper mold unit structure in this embodiment;

[0021] Figure 3 This is a schematic diagram of the lower mold unit structure in this embodiment.

[0022] In the diagram: 1. Press body; 2. Guide rod; 3. Cylinder; 4. Upper die unit; 41. Sliding frame; 42. First upper protrusion; 43. Second upper protrusion; 5. Lower die unit; 51. Connecting seat; 52. First lower recess; 53. Third lower recess; 54. First sliding rod; 55. First spring; 56. Limiting seat; 57. Second spring; 58. Second sliding rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] This application provides a drawing die for the inner panel of a car rear wheel arch, solving the problem that when drawing the rear wheel arch, which consists of two parts—the inner panel body and the pressing edge—simultaneously forming and drawing both parts at the same time can affect the drawing of the inner panel body and thus the drawing effect. The new die uses a cylinder 3 to drive the upper die unit 4 downwards, so that the upper die unit 4 first contacts the first recessed seat 52. The upper die unit 4 and the first recessed seat 52 then extrude and form the inner panel of the rear wheel arch, simultaneously positioning the inner panel. When the upper die unit 4 pushes the first recessed seat 52 further downwards, and the inner panel contacts the third recessed seat 53, the first recessed seat 52 presses the inner panel, performing segmented drawing. The third recessed seat 53, in conjunction with the upper die unit 4, ensures the effective drawing of the inner panel.

[0025] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0026] This utility model discloses a drawing die for the inner panel of the rear wheel arch of an automobile.

[0027] Example 1: According to the appendix Figure 1-3 As shown, the press includes an upper die unit 4 and a lower die unit 5. The lower die unit 5 is mounted on the press body 1, and the upper die unit 4 is located directly above the lower die unit 5. A guide rod 2 is provided on the press body 1, and the upper die unit 4 is slidably connected to the outer peripheral wall of the guide rod 2. A cylinder 3 is mounted on the guide rod 2, and the output end of the cylinder 3 is connected to the upper die unit 4. The lower die unit 5 includes:

[0028] Connecting seat 51, which is mounted on the press body 1;

[0029] The first recessed seat 52 is slidably connected in the connecting seat 51;

[0030] Two third recessed seats 53 are slidably connected to the first recessed seat 52. The third recessed seats 53 are located on both sides of the first recessed seat 52, and the first recessed seat 52 is initially positioned above the third recessed seats 53.

[0031] The cylinder 3 drives the upper mold unit 4 to move downward, so that the upper mold unit 4 first contacts the first lower recess 52. The upper mold unit 4 and the first lower recess 52 extrude and form the inner plate of the rear wheel cover, and at the same time position the inner plate of the rear wheel cover. When the upper mold unit 4 pushes the first lower recess 52 to continue to move downward, when the inner plate of the rear wheel cover contacts the third lower recess 53, the inner plate of the rear wheel cover is pressed under the action of the first lower recess 52 and segmented drawing is performed. The third lower recess 53 ensures the drawing effect of the inner plate of the rear wheel cover.

[0032] The bottom end face of the first recessed seat 52 is provided with a plurality of first sliding rods 54. The first sliding rods 54 are slidably connected to the inner wall of the connecting seat 51. A first spring 55 is sleeved on the outer peripheral wall of the first sliding rod 54. The two ends of the first spring 55 are fixedly connected to the first recessed seat 52 and the connecting seat 51 respectively.

[0033] When the upper mold unit 4 moves downward, it pushes the first lower recess 52 downward, which in turn causes the first lower recess 52 to move the first sliding rod 54 and compress the first spring 55. When the upper mold unit 4 separates from the first lower recess 52, the first lower recess 52 is pushed upward by the rebound of the first spring 55, which facilitates the removal of the inner panel of the rear wheel cover.

[0034] The bottom end face of the first recessed seat 52 is fixedly connected to the limiting seat 56. When the first upper protrusion 42 pushes the first recessed seat 52 downward, and the limiting seat 56 below the first recessed seat 52 contacts the connecting seat 51, the first recessed seat 52 is limited, which facilitates the upper mold unit 4 to press the first recessed seat 52 to extrude and form the inner plate of the rear wheel cover.

[0035] A second sliding rod 58 is fixedly connected to the lower part of the third recessed seat 53, and the second sliding rod 58 is slidably connected to the inner wall of the connecting seat 51.

[0036] When the upper mold unit 4 pushes the first recessed seat 52 to move, it squeezes and positions the inner plate of the rear wheel cover. When the first recessed seat 52 continues to move downward, the inner plate of the rear wheel cover comes into contact with the third recessed seat 53, causing the third recessed seat 53 to drive the second sliding rod 58 to move downward until the third recessed seat 53 comes into contact with and squeezes the connecting seat 51. At this time, with the cooperation of the second upper protrusion 43 and the third recessed seat 53, the stretching of the inner plate of the rear wheel cover is completed, improving the stretching effect of the inner plate of the rear wheel cover.

[0037] A second spring 57 is sleeved on the outer peripheral wall of the limiting seat 56, and the two ends of the second spring 57 are fixedly connected to the third recessed seat 53 and the connecting seat 51, respectively.

[0038] When the upper mold unit 4 separates from the third lower recess 53, the third lower recess 53 is pushed upward by the rebound of the second spring 57, making it easier to remove the inner plate of the rear wheel arch.

[0039] Example 2: According to the appendix Figure 1-3 As shown, the press includes an upper die unit 4 and a lower die unit 5. The lower die unit 5 is mounted on the press body 1, and the upper die unit 4 is located directly above the lower die unit 5. A guide rod 2 is provided on the press body 1, and the upper die unit 4 is slidably connected to the outer peripheral wall of the guide rod 2. A cylinder 3 is mounted on the guide rod 2, and the output end of the cylinder 3 is connected to the upper die unit 4. The lower die unit 5 includes:

[0040] Connecting seat 51, which is mounted on the press body 1;

[0041] The first recessed seat 52 is slidably connected in the connecting seat 51;

[0042] Two third recessed seats 53 are slidably connected to the first recessed seat 52. The third recessed seats 53 are located on both sides of the first recessed seat 52, and the first recessed seat 52 is initially positioned above the third recessed seats 53.

[0043] The upper mold unit 4 includes a sliding frame 41, the top end face of which is mounted to the output end of the cylinder 3.

[0044] Under the action of cylinder 3, cylinder 3 pushes sliding frame 41 to move, causing sliding frame 41 to slide along the outer peripheral wall of guide rod 2, and causing sliding frame 41 to move to lower mold unit 5.

[0045] The bottom end face of the sliding frame 41 is equipped with a first upper protrusion 42 and two second upper protrusions 43, with the second upper protrusions 43 located on both sides of the first upper protrusion 42.

[0046] The first upper protrusion 42 is set to correspond to the first lower concave seat 52, and the second upper protrusion 43 is set to correspond to the third lower concave seat 53.

[0047] When the cylinder 3 drives the sliding frame 41 to move downward, the first upper protrusion 42 presses the inner plate of the rear wheel cover onto the first lower concave seat 52, and the inner plate of the rear wheel cover is pressed and formed between the first lower concave seat 52 and the first upper protrusion 42. When the first upper protrusion 42 pushes the first lower concave seat 52 to continue to move downward, so that the second upper protrusion 43 moves closer to the third lower concave seat 53, the inner plate of the rear wheel cover is stretched through the second upper protrusion 43 and the third lower concave seat 53.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drawing die for the inner panel of a car rear wheel arch, characterized in that, The press includes an upper die unit (4) and a lower die unit (5). The lower die unit (5) is mounted on the press body (1). The upper die unit (4) is located directly above the lower die unit (5). A guide rod (2) is provided on the press body (1). The upper die unit (4) is slidably connected to the outer peripheral wall of the guide rod (2). A cylinder (3) is mounted on the guide rod (2). The output end of the cylinder (3) is connected to the upper die unit (4). The lower die unit (5) includes: A connecting seat (51) is mounted on the press body (1); The first recessed seat (52) is slidably connected in the connecting seat (51); Two third recessed seats (53) are slidably connected to the first recessed seat (52). The third recessed seats (53) are located on both sides of the first recessed seat (52), and the first recessed seat (52) is initially positioned above the third recessed seat (53).

2. The automobile rear wheel arch inner panel drawing die according to claim 1, characterized in that, The bottom end face of the first recessed seat (52) is provided with a plurality of first sliding rods (54). The first sliding rods (54) are slidably connected to the inner wall of the connecting seat (51). A first spring (55) is sleeved on the outer peripheral wall of the first sliding rod (54). The two ends of the first spring (55) are fixedly connected to the first recessed seat (52) and the connecting seat (51) respectively.

3. The automobile rear wheel arch inner panel drawing die according to claim 2, characterized in that, The bottom end face of the first recessed seat (52) is fixedly connected to the limiting seat (56).

4. The automobile rear wheel arch inner panel drawing die according to claim 3, characterized in that, A second sliding rod (58) is fixedly connected to the lower part of the third recessed seat (53), and the second sliding rod (58) is slidably connected to the inner wall of the connecting seat (51).

5. The automobile rear wheel arch inner panel drawing die according to claim 4, characterized in that, A second spring (57) is sleeved on the outer peripheral wall of the limiting seat (56), and the two ends of the second spring (57) are fixedly connected to the third recessed seat (53) and the connecting seat (51) respectively.

6. The automobile rear wheel arch inner panel drawing die according to claim 1, characterized in that, The upper mold unit (4) includes a sliding frame (41), the top end face of which is installed with the output end of the cylinder (3).

7. The automobile rear wheel arch inner panel drawing die according to claim 6, characterized in that, The bottom end face of the sliding frame (41) is equipped with a first upper protrusion (42) and two second upper protrusions (43), with the second upper protrusions (43) located on both sides of the first upper protrusion (42).

8. The automobile rear wheel arch inner panel drawing die according to claim 7, characterized in that, The first upper protrusion (42) is provided corresponding to the first lower recess (52), and the second upper protrusion (43) is provided corresponding to the third lower recess (53).