A mesh die for controlling surface defects of a stamped outer panel of a vehicle door

Abstract

The utility model discloses a grid type die with control car door outer plate stamping surface defect relates to automobile die field, including frame and a plurality of installation platform, each installation platform all is provided with a die for processing car door outer plate, the car door includes car door handle, car door mould surface curvature comb abrupt change area, car door strong pressure area and processing area, the die includes upper die and lower die, the die surface of lower die includes: grid mould, the grid mould is directly opposite with processing area, car door handle area and contour area, the contour area will the grid mould and car door handle area are wrapped and will two areas link to each other, the outer area is located the outer edge of contour area and extends to the side of lower die die surface, the utility model discloses when using, through the processing of grid mould reduces car door outer plate piece pimple defect, improves the yield, and according to the appearance shape of car door outer plate and the strong pressure position in stamping process makes the adjustment and avoids the design, improves the stamping quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of sheet metal stamping technology, and in particular relates to a grid-type mold for controlling surface defects in the stamping of car door outer panels. Background Technology

[0002] Automobile manufacturing requires a large number of sheet metal stamping processes. During the stamping of the outer panels of the car doors, the dust control level in the workshop is low. Dust and particles from the stamping process fall onto the stamped panels, causing problems such as pitting and panel defects. After painting, these defects will cause light and shadow defects, affecting the texture and quality of the paint on the entire vehicle.

[0003] In existing technology, for flat plate stamping, dust can be stored by setting up a grid die, but for example... Figure 2 When stamping the outer panel of a car door, some areas, such as the door handle, the strong pressure area of ​​the door, and the area where the curvature of the door handle changes abruptly, have large irregular shapes. Therefore, it is necessary to design to avoid affecting the stamping quality of the outer panel of the car door. Based on this, this utility model designs a grid-type mold that controls the surface defects of the stamped outer panel of the car door to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the prior art and propose a grid-type mold for controlling surface defects in the stamping of car door outer panels.

[0005] A grid-type mold for controlling surface defects in the stamping of car door outer panels, comprising:

[0006] Base;

[0007] Multiple mounting stations, each of which is equipped with a mold for processing the outer panel of the car door, the car door including a door handle, a door mold surface curvature abrupt change area, a door high pressure area and a processing area;

[0008] The mold includes an upper mold and a lower mold, and the mold surface of the lower mold includes:

[0009] A grid mold with a grid groove structure is provided, the grid mold is directly opposite the processing area, and the grid mold includes mold area one, mold area two and mold area three respectively;

[0010] The door handle area is directly opposite the door handle on the outer panel of the door.

[0011] The outline area encompasses the mesh pattern and the door handle area and connects the two areas to each other.

[0012] The outer region is located at the outer edge of the contour region and extends to the side of the lower mold surface.

[0013] In the above mold, a rounded corner area is provided at the connection between the mesh mold and the contour area, and the rounded corner area is set to have an edge radius greater than 5mm.

[0014] In the above mold, both mold area one and mold area two include a uniform depth area in the middle and a boundary gradient area on the outside. The depth of the mesh groove in the uniform depth area is set to 0.15-0.2 mm, and the mesh groove is set to be distributed at a cross angle of 45°. The boundary gradient area is set to a square ring structure. The depth of the mesh groove in the boundary gradient area is in a gradient shape and extends to the boundary with the contour area before disappearing.

[0015] In the above mold, the width of the gradient area is set to 10mm.

[0016] In the above mold, the distance between the contour area and the edge of the outer door panel is greater than 15mm. The contour area includes the position opposite to the curvature change area 32 of the door mold surface and the strong pressure area.

[0017] In the above mold, the surface curvature of the processing area is greater than 350mm.

[0018] The beneficial effects of this utility model are as follows: When in use, this utility model reduces pitting defects in the outer panel of the car door by processing the grid mold, thereby improving the yield rate. Furthermore, it makes adjustments and avoidance designs based on the appearance shape of the outer panel of the car door and the strong pressure position during the stamping process, thereby improving the stamping quality and making it convenient to use. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a grid-type mold for controlling surface defects in the stamping of car door outer panels, provided by this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of a car door outer panel in a grid-type mold for controlling surface defects during stamping of the car door outer panel, provided by this utility model.

[0021] Figure 3 This is a structural schematic diagram of the lower die in a grid-type mold for controlling surface defects in the stamping of car door outer panels, provided by this utility model.

[0022] In the diagram: 1. Base, 2. Mounting platform, 3. Outer door panel, 31. Door handle, 32. Door mold surface curvature abrupt change zone, 33. Door high pressure zone, 34. Machining zone, 4. Mold, 41. Mesh mold, 411. Mold area one, 412. Mold area two, 413. Mold area three, 42. Door handle area, 43. Contour area, 44. Outer area, 45. Rounded corner area, 51. Area of ​​equal depth, 52. Boundary gradient area. Detailed Implementation

[0023] Reference Figures 1-3 A grid-type mold for controlling surface defects of stamped car door panels includes a base 1 and multiple mounting platforms 2. Each mounting platform 2 is provided with a mold 4 for processing car door panels 3. The car door 3 includes a door handle 31, a door die surface curvature abrupt change zone 32, a door high pressure zone 33 and a processing zone 34. The surface curvature of the processing zone 34 is greater than 350mm.

[0024] Mold 4 includes an upper mold and a lower mold. The mold surface of the lower mold includes:

[0025] A grid mold 41 with a grid groove structure is positioned opposite the processing area 34. The grid mold includes mold area one 411, mold area two 412 and mold area three 413 respectively.

[0026] Door handle area 42, which is directly opposite to the door handle 31 on the outer door panel 3;

[0027] The outline area 43 encloses the mesh module 41 and the door handle area 42 and connects the two areas to each other.

[0028] Outer area 44 is located at the outer edge of contour area 43 and extends to the side of the lower mold surface.

[0029] A rounded corner area 45 is provided at the connection between the mesh mold 41 and the contour area 43, and the rounded corner area 45 is set to have an edge radius greater than 5mm.

[0030] Both module 1 411 and module 2 412 include a uniform depth region 51 in the middle and a boundary gradient region 52 on the outside. The depth of the mesh groove in the uniform depth region 51 is set to 0.15-0.2 mm, and the mesh groove is set to be distributed at a cross angle of 45°. The boundary gradient region 52 is set to a square ring structure. The depth of the mesh groove in the boundary gradient region 52 is in a gradient shape and extends to the boundary with the contour region 43 before disappearing. The width of the gradient region 52 is set to 10 mm.

[0031] The distance between the contour area 43 and the edge of the outer door panel 3 is greater than 15mm. The contour area 43 includes the position opposite to the curvature change area 32 and the strong pressure area 33 of the door mold surface.

[0032] The above-mentioned mesh mold is manufactured using the following method, including the following steps:

[0033] S1: Confirm the location and extent of the grid region in grid module 41, wherein the grid region satisfies the following conditions:

[0034] A. Avoid the area where the corresponding door handle 31 is located to prevent rapid material movement during the stamping process, and also avoid the area near the door die surface curvature abrupt change area.

[0035] B. Avoid the door edge line by more than 15mm to prevent the mesh mold 41 from affecting the material flow and the edge line position. The concave and convex corners of the door 3 and the areas with more material flow are designated as strong pressure zones 33 and should be avoided by more than 10mm.

[0036] C. The curvature of the surface of the grid area is greater than 350mm, and the corner radius of the grid area is ≥R5mm;

[0037] S2: The mesh mold 41 is processed by a machine tool. The machine tool is a Φ2 ball end mill. The processing speed is ≥6000 rpm and the processing speed is ≤1000 mm / min.

[0038] S3: After the mesh mold 41 is processed, it is maintained and chrome-plated. In step S3, the maintenance includes deburring and polishing, and the entire mesh area is covered with 2mm PVC soft board and protected with adhesive tape. After the above process is completed, the production press is debugged and the parts are compared with the sealed sample. After there are no abnormalities, the chrome-plating process is carried out.

[0039] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A grid-type mold for controlling surface defects during stamping of car door outer panels, characterized in that, Includes the base (1); Multiple mounting stations (2), each of which is provided with a mold (4) for processing the outer panel (3) of the car door, the car door (3) including a door handle (31), a door mold surface curvature abrupt change area (32), a door strong pressure area (33) and a processing area (34), the surface curvature of the processing area (34) is greater than 350mm; The mold (4) includes an upper mold and a lower mold, and the mold surface of the lower mold includes: A grid mold (41) with a grid groove structure is provided, the grid mold (41) is directly opposite the processing area (34), and the grid mold includes a first mold area (411), a second mold area (412) and a third mold area (413); The door handle area (42) is directly opposite the door handle (31) on the outer panel (3) of the door; The outline area (43) encloses the mesh pattern (41) and the door handle area (42) and connects the two areas to each other; The outer region (44) is located at the outer edge of the contour region (43) and extends to the side of the lower mold surface.

2. The grid-type mold for controlling surface defects in the stamping of the outer panel of a car door, as described in claim 1, is characterized in that... A rounded corner area (45) is provided at the connection between the grid pattern (41) and the contour area (43), and the rounded corner area (45) is set to have an edge radius greater than 5mm.

3. The grid-type mold for controlling surface defects in the stamping of the outer panel of a car door, as described in claim 1, is characterized in that... The first module (411), the second module (412), and the third module (413) each include a uniform depth region (51) in the middle and a boundary gradient region (52) on the outside. The depth of the mesh groove in the uniform depth region (51) is set to 0.15-0.2 mm, and the mesh groove is set to be distributed at a cross angle of 45°. The boundary gradient region (52) is set to a square ring structure. The depth of the mesh groove in the boundary gradient region (52) is in a gradient shape and extends to the boundary with the contour region (43) and then disappears.

4. The grid-type mold for controlling surface defects in the stamping of the outer door panel according to claim 3, characterized in that, The width of the gradient region (52) is set to 10 mm.

5. The grid-type mold for controlling surface defects in the stamping of the outer door panel according to claim 3, characterized in that, The contour area (43) is more than 15mm away from the edge of the outer panel (3) of the door. The contour area (43) includes the opposite positions of the door surface curvature abrupt change area (32) and the strong pressure area (33).

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