Stamping die for manufacturing vehicle body covering part, vehicle body covering part and electric vehicle

Abstract

The utility model discloses a stamping die for manufacturing a vehicle body covering part, the vehicle body covering part and an electric vehicle. The punching die comprises a blanking die part, the blanking die part is provided with a knife block assembly for punching an opening in a raw material, the knife block assembly comprises a plurality of knife blocks, each knife block is provided with a knife edge at the edge of each knife block, and the knife blocks are arranged to have a contour corresponding to the shape of the opening, wherein the plurality of knife blocks at least comprise a first knife block with an arc-shaped knife edge and a second knife block adjacent to the first knife block, the first knife block corresponds to an arc-shaped section of the opening shape, and the second knife block corresponds to other sections different from the arc-shaped section. And the first cutter block and the second cutter block are arranged on the blanking die component in a manner that a parting between the first cutter block and the second cutter block is staggered from a boundary position between the arc-shaped section and the other section. By redesigning the arrangement of the tool setting blocks, the opening forming quality can be improved.

Description

Technical Field

[0001] The present application belongs to the field of automobile manufacturing, and specifically relates to a stamping die for manufacturing a body covering. The present application also relates to a body covering manufactured using the stamping die. The present application also relates to an electric vehicle including the body covering. Background Art

[0002] Drawing process directly affects the appearance quality of automobile panels, that is, the development cycle of vehicle models. Cracking of the side panel at the edge of the door opening is one of the common problems in the drawing process. This type of cracking is common in the waste area at the edge of the door opening. It is not easy to be found after the waste is cut off. It has a great impact on the springback size of the part and will affect the matching of the whole vehicle. When the cracking occurs more seriously, the crack will extend to the product itself, causing batch scrapping of parts. An important factor for cracking of the door opening is the inconsistency of the bright band in the corner area. Utility Model Content

[0003] One aspect of the present application is to provide a stamping die for manufacturing a vehicle body covering part to solve the problem of opening cracking.

[0004] The stamping die involved in the present application includes a blanking die component, which has a knife block assembly for punching out an opening of a raw material, wherein the knife block assembly includes a plurality of knife blocks, each of which has a knife edge at its edge, and the plurality of knife blocks are arranged to have a contour corresponding to the shape of the opening, wherein the plurality of knife blocks include at least a first knife block with an arc-shaped knife edge and a second knife block adjacent to the first knife block, the first knife block corresponds to an arc-shaped segment of the opening shape, and the second knife block corresponds to other segments different from the arc-shaped segment, wherein the first knife block and the second knife block are arranged on the blanking die component so that the seam between them is offset from the boundary position between the first arc-shaped segment and the other segments.

[0005] In one embodiment of the stamping die, the second blade block has a straight blade edge, and the boundary position is the tangent point position between the arc segment and the other segments.

[0006] In one embodiment of the stamping die, the separation distance between the separation seam and the boundary position is at least 5 mm.

[0007] In one embodiment of the stamping die, the opening shape includes multiple arc segments with the same or different curvatures, wherein the first arc segment and the second arc segment are connected by a first straight line segment, and the first arc segment and the second arc segment each correspond to a knife block.

[0008] In one embodiment of the stamping die, the opening shape includes at least two arcuate segments adjacent to each other, wherein a third arcuate segment extends to a fourth arcuate segment through a transition segment in the form of a straight line, and a gap between a third knife block corresponding to the third arcuate segment and a fourth knife block corresponding to the fourth arcuate segment is located in the middle of the transition segment.

[0009] In one embodiment of the stamping die, the blanking die component comprises:

[0010] An upper mold, wherein the upper mold has an upper knife block assembly, wherein the upper knife block assembly includes a plurality of upper knife blocks, and the plurality of upper knife blocks include a first upper knife block and a second upper knife block that are adjacent to each other; and

[0011] A lower mold, wherein the lower mold has a lower knife block assembly, wherein the lower knife block assembly includes a plurality of lower knife blocks, and the plurality of lower knife blocks include a first lower knife block and a second lower knife block that are adjacent to each other;

[0012] The first upper knife block and the first lower knife block correspond to the same section of the opening, the second upper knife block and the second lower knife block correspond to another section, and they are respectively arranged on the upper mold and the lower mold so that the first upper seam between the first upper knife block and the second upper knife block is staggered with the first lower seam between the first lower knife block and the second lower knife block.

[0013] In one embodiment of the stamping die, the first upper split and the first lower split are offset by at least 5 mm.

[0014] In one embodiment of the stamping die, the upper blade block assembly has blade edges of the upper blade blocks arranged on its outer edge, and the lower blade block assembly has blade edges of the lower blade blocks arranged on its inner edge.

[0015] Another aspect of the present application is to provide a vehicle body covering part manufactured using the stamping die described in any one of the above embodiments, wherein an opening of the vehicle body covering part is punched out by the stamping die.

[0016] In an embodiment of the vehicle body covering component, the vehicle body covering component is a side panel or a roof cover.

[0017] Another aspect of the present application is to provide an electric vehicle having the vehicle body covering member. The electric vehicle comprises the side panels described in any one of the above embodiments and / or the top cover described in any one of the above embodiments.

[0018] The present application improves the quality of opening formation by redesigning the arrangement of the cutter blocks, thereby reducing scrapped parts, improving production and mass production efficiency, and reducing costs. Through the arrangement of the cutter blocks of the present application, the bright band in the opening corner area is controlled, thereby increasing the safety margin of the opening formation.

[0019] The present application improves the quality of opening formation by staggering the slits between the blade blocks and the shape of the opening.

[0020] The present application also improves the quality of opening formation by not arranging the split seam in the arc section of the opening.

[0021] The present application further improves the quality of opening formation by staggering the splitting seams between the knife blocks of the upper mold and the splitting seams between the knife blocks of the lower mold.

[0022] The stamping die of the present application is suitable for blanking sheets or finished products with a closed arc-shaped cutting edge design.

[0023] The scrap rate of the body covering parts, especially the side panels or the top covers, manufactured by the stamping die of the present application is reduced, thereby providing high-quality parts for the manufacture of automobiles, especially electric vehicles.

[0024] Other aspects and features of the present application will become apparent from the following detailed description with reference to the accompanying drawings. It should be understood, however, that the drawings are designed for illustrative purposes only and are not intended to limit the scope of the present application, as reference should be made to the appended claims. It should also be understood that the drawings are intended only to conceptually illustrate the structures and processes described herein and, unless otherwise indicated, are not necessarily drawn to scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application will be more fully understood by referring to the following detailed description of specific embodiments in conjunction with the accompanying drawings, in which the same reference numerals in the drawings always refer to the same elements in the drawings.

[0026] Figure 1 A schematic diagram of an embodiment of a vehicle body covering member involved in the present application;

[0027] Figure 2 A schematic diagram of an embodiment of a tool in a stamping die involved in the present application;

[0028] Figure 3 A schematic diagram of a first embodiment of a blade block arrangement according to the present application;

[0029] Figure 4 A schematic diagram of a second embodiment of a knife block arrangement involved in the present application;

[0030] Figure 5 A schematic diagram of a third embodiment of the blade block arrangement involved in the present application;

[0031] Figure 6 A schematic diagram of a fourth embodiment of the blade block arrangement involved in the present application;

[0032] Figure 7A schematic diagram of a fifth embodiment of the blade block arrangement involved in the present application;

[0033] Figure 8 A schematic diagram of a sixth embodiment of the blade block arrangement involved in the present application;

[0034] Fig. 9 A schematic diagram of an embodiment of an upper die in a stamping die involved in the present application; and

[0035] Fig.10 It is a schematic diagram of an embodiment of the lower die in the stamping die involved in the present application. DETAILED DESCRIPTION

[0036] In order to help those skilled in the art to accurately understand the subject matter for which protection is sought in the present application, the specific implementation of the present application is described in detail below in conjunction with the accompanying drawings.

[0037] Figure 1 This is a schematic diagram of an embodiment of a body covering member involved in the present application, in which the body covering member is a side panel 10. The side panel 10 has two openings 12, namely a first door opening 14 located on the right side and a second door opening 16 located on the left side. The side panel 10 is formed into the first door opening 14 and the second door opening 16 by the stamping die involved in the present application. For any of the door openings, there is a corresponding pair of cutters that cooperate with each other to punch out the raw material to form a door opening of a target shape. The shape of the cutter conforms to the shape of the door opening, and each of the pair of cutters is composed of multiple cutter blocks to piece together an overall contour that conforms to the complex shape of the door opening. The cutter is arranged in a blanking die component not shown. During the stamping process, parts of the raw material are cut and separated by the cutter to form a door opening.

[0038] Figure 2 It is a schematic diagram of a tool used for the first door opening and for punching the first door opening. The tool is referred to as a tool block assembly 20 here, which includes a plurality of tool blocks 22. The tool block 22 is also referred to as an "insert". In the illustrated embodiment, the tool block assembly 20 includes six tool blocks. These tool blocks have cutting edges 24 at their edges, and they are arranged so that the combined contour of the cutting edges corresponds to the shape of the first door opening. The shape of the door opening is complex, with both arc sections 15 and straight sections 17. Corresponding to these sections of different geometric shapes, there are tool blocks with arc cutting edges and tool blocks with straight cutting edges.

[0039] Although the blade block with an arc-shaped blade corresponds to the arc-shaped section of the door opening, and the blade block with a straight blade corresponds to the straight section of the door opening, according to the conception of the present application, the arrangement of the blade blocks is such that the blade blocks are not completely consistent with the sections.

[0040] Figure 3An embodiment of knife block arrangement. The shape of the door opening includes an arc segment 26 and other segments 28 different from the arc segment 26. The knife block includes a first knife block 30 corresponding to the arc segment 26 and a second knife block 32 corresponding to the other segments 28. In the illustrated embodiment, the second knife block 32 has two pieces, which are arranged on both sides of the first knife block 30. In other embodiments, the second knife block can be arranged only on one side of the first knife block 30, and the other knife blocks are arranged on the other side of the first knife block 30. There is a critical point between the arc segment 28 and the other segments 28, and the position of the critical point is the dividing position 34. There is a slit 36 ​​between the first knife block 30 and the second knife block 32. The slit 36 ​​is staggered from the dividing position 34. In the illustrated embodiment, the other segments 28 are straight segments, and correspondingly, the second knife block 32 has a straight blade. The tangent point 38 where the arc segment and the straight segment are connected is staggered from the slit 36 ​​between the first knife block 30 and the second knife block 32. In one embodiment, such offset distance d is at least 5 mm. Figure 4 For similar Figure 3 Another embodiment of the blade block arrangement. Similar components are indicated by the same reference numerals. The split 36 ​​is staggered from the dividing position 34.

[0041] In one embodiment, if Figure 5 In the embodiment shown, one arc section 54 corresponds to one blade block 56. Only one blade block is used in the corner area of ​​the door opening, so that the bright band of the formed product in this area has consistency.

[0042] Back to Figure 2 In the illustrated embodiment, the door opening includes a plurality of arc segments 15 and a plurality of straight segments 17 connecting adjacent arc segments 15. The curvatures of these arc segments 15 may be the same or different. The number of arc segments 15 corresponds to the number of arc-shaped blade blocks. In the illustrated embodiment, there are two arc segments 15 and two straight segments 17, and each arc segment 15 corresponds to one blade block. Each straight segment 17 corresponds to two blade blocks.

[0043] exist Figure 6 In the illustrated embodiment, the opening shape includes a first arc segment 98 and a second arc segment 100, and the first arc segment 98 and the second arc segment 100 are connected by a first straight segment 99, and the boundary position between the segments is circled in black in the figure. The first arc segment 98 and the second arc segment 100 are each corresponding to a knife block 106, 108, and there are no multiple knife blocks spliced ​​in the first arc segment 98, and there are no multiple knife blocks spliced ​​in the second arc segment 100. The arc segment can be an arc shape. The first straight segment 99 is corresponding to a knife block 107, and the seam between the knife block 107 and the two adjacent knife blocks 106, 108 follows the above-mentioned principle of "the seam and the boundary position are staggered".

[0044] In yet another embodiment, Figure 7 In the illustrated embodiment, the third arc segment 102 and the fourth arc segment 104 are adjacent to each other, that is, they are combined into a continuous arc corner, and the third arc segment 103 extends to the fourth arc segment 104 via a shorter transition segment 103. The transition segment 103 is a straight segment. Two blade blocks are provided corresponding to such a continuous arc corner, wherein the third blade block 110 corresponds to the third arc segment 102, and the fourth blade block 112 corresponds to the fourth arc segment 104, and the split 113 between the third blade block 110 and the fourth blade block 112 is located in the middle of the transition segment 103. The arc segment can be in the shape of a circular arc. For the sake of clarity, Figure 7 The center dividing line is circled in red.

[0045] Figure 8 For application Figure 1 The embodiment of the arrangement of the knife blocks in the stamping die of the side wall is shown. For each door opening, there is a pair of knives for cutting. The raw material is subjected to the stamping process on the stamping machine. The stamping machine is provided with a blanking die component, and includes an upper and a lower part, namely an upper die 58 and a lower die 60, between which the raw material is placed and the machine applies pressure to deform it. The schematic diagram of the upper die 58 and the lower die 60 is shown in FIG. Figure 9-10 As shown. The pair of cutters are arranged in the upper mold 58 and the lower mold 60. The cutter arranged in the upper mold 58 is an upper cutter block assembly 62, and the upper cutter block assembly 62 includes a plurality of upper cutter blocks 66. The cutter arranged in the lower mold 60 is a lower cutter block assembly 64, and the lower cutter block assembly 64 also includes a plurality of lower cutter blocks 68. Taking the second door opening 16 in the figure as an example, the upper cutter block assembly includes a first upper cutter block 74, a second upper cutter block 75, a third upper cutter block 76, a fourth upper cutter block 77, a fifth upper cutter block 78, and a sixth upper cutter block 79. The lower cutter block assembly includes a first lower cutter block 86, a second lower cutter block 87, a third lower cutter block 88, a fourth lower cutter block 89, a fifth lower cutter block 90, and a sixth lower cutter block 91. The first upper blade block 74 and the first lower blade block 86 basically correspond to the same section of the second door opening 16, and the second upper blade block 75 and the second lower blade block 87 basically correspond to another section of the second door opening 16... The corresponding relationship between the upper blade blocks and the lower blade blocks is analogous and will not be elaborated here. The arrangement relationship between the upper blade blocks and the lower blade blocks is that the slit 82 between the first upper blade block 74 and the second upper blade block 75 is staggered with the slit 84 between the first lower blade block 86 and the second lower blade block 87. That is to say, in the illustrated embodiment, the slit between any two adjacent upper blade blocks is staggered with the slit between the corresponding two adjacent lower blade blocks. In one embodiment, the staggered distance d1 between the upper and lower slits is at least 5 mm.

[0046] In the illustrated embodiment, the knife edges are disposed at an outer edge 70 of the upper knife block assembly 62 and an inner edge 72 of the lower knife block assembly 64, respectively.

[0047] In one embodiment, the side panels are made of aluminum alloy.

[0048] Under the concept of the present application, the stamping die involved in the present application can manufacture a vehicle body covering part. In addition to the side panel, the vehicle body covering part can also be a vehicle roof.

[0049] The present application also relates to an electric vehicle having the above-mentioned body covering, wherein the side panels and / or the roof are manufactured by the stamping die involved in the present application.

[0050] Although specific embodiments of the present application have been shown and described in detail to illustrate the principles of the present application, it should be understood that the present application can be implemented in other ways without departing from such principles.

Claims

1. A stamping die for manufacturing a body panel, characterized in that include: A blanking die component, the blanking die component having a knife block assembly for punching out an opening of a raw material, the knife block assembly comprising a plurality of knife blocks, each of the plurality of knife blocks having a knife edge at its edge, and the plurality of knife blocks are arranged to have a contour corresponding to the shape of the opening, wherein the plurality of knife blocks at least comprise a first knife block (30) having an arc-shaped knife edge and a second knife block (32) adjacent to the first knife block (30), the first knife block (30) corresponding to an arc-shaped segment (26) of the opening shape, the second knife block (32) corresponding to another segment (28) different from the arc-shaped segment (26), wherein the first knife block (30) and the second knife block (32) are arranged on the blanking die component such that a slit (36) therebetween is offset from a boundary position (34) between the arc-shaped segment (26) and the other segment (28).

2. The stamping die for manufacturing a vehicle body panel according to claim 1, characterized in that: The second blade block (32) has a straight blade edge, the other section (28) is a straight section, and the boundary position (34) is a tangent point (38) between the arc section (26) and the other section (28).

3. The stamping die for manufacturing a vehicle body panel according to claim 1, characterized in that: The offset distance (d) between the dividing seam (36) and the dividing position (34) is at least 5 mm.

4. The stamping die for manufacturing a vehicle body panel according to claim 1, characterized in that: The opening shape includes a plurality of arc segments with the same or different curvatures, wherein a first arc segment (98) and a second arc segment (100) are connected by a first straight line segment (99), and the first arc segment (98) and the second arc segment (100) are each corresponding to a knife block.

5. The stamping die for manufacturing a vehicle body panel according to claim 1, characterized in that: The opening shape comprises at least two arcuate sections adjacent to each other, wherein a third arcuate section (102) extends to a fourth arcuate section (104) through a transition section (103) in the form of a straight line, and a split between a third blade block (110) corresponding to the third arcuate section (102) and a fourth blade block (112) corresponding to the fourth arcuate section (104) is located in the middle of the transition section (103).

6. The stamping die for manufacturing a vehicle body panel according to claim 1, characterized in that The blanking die components include: An upper mold (58), wherein the upper mold (58) has an upper knife block assembly (62), wherein the upper knife block assembly (62) includes a plurality of upper knife blocks (66), wherein the plurality of upper knife blocks (66) include adjacent first upper knife blocks (74) and second upper knife blocks (75); and A lower mold (60), wherein the lower mold (60) has a lower knife block assembly (64), wherein the lower knife block assembly (64) includes a plurality of lower knife blocks (68), wherein the plurality of lower knife blocks (68) include adjacent first lower knife blocks (86) and second lower knife blocks (87); The first upper blade block (74) and the first lower blade block (86) correspond to the same section of the opening (12), the second upper blade block (75) and the second lower blade block (87) correspond to another section, and the first upper blade block (74), the second upper blade block (75), the first lower blade block (86), and the second lower blade block (87) are respectively arranged on the upper mold (58) and the lower mold (60) such that the first upper splitting seam (82) between the first upper blade block (74) and the second upper blade block (75) is staggered with the first lower splitting seam (84) between the first lower blade block (86) and the second lower blade block (87).

7. The stamping die for manufacturing a vehicle body panel according to claim 6, characterized in that: The distance (d1) between the first upper split seam (82) and the first lower split seam (84) is at least 5 mm.

8. The stamping die for manufacturing a vehicle body panel according to claim 6, characterized in that: The upper blade block assembly (62) has blade edges of the upper blade blocks (66) arranged on its outer edge (70), and the lower blade block assembly (64) has blade edges of the lower blade blocks (68) arranged on its inner edge (72).

9. A vehicle body covering having an opening, characterized in that The opening is manufactured using a stamping die according to any one of claims 1 to 8, wherein the vehicle body panel is a side panel or a roof panel.

10. An electric vehicle, characterized in that The vehicle body covering member comprises the vehicle body covering member as claimed in claim 9.

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