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Edge curling die, edge curling method employing edge curling die and edge curling method used in preparation of car doors

A crimping mold and crimping technology, which is applied in the crimping field of crimping molds and automobile door preparations, can solve the problems of low processing efficiency of pneumatic fixtures, difficulty in meeting production needs, low production efficiency, etc., and achieve fast processing, The effect of high production efficiency and simple structure

Active Publication Date: 2015-12-16
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no hemming mold specially used to turn the vertical plate into a U-shaped hem, people also need to move the plate that has been punched to the vertical state to the pneumatic workshop, and use special custom-made pneumatic clamps and other tools to roll and move. The process leads to low production efficiency and high labor intensity, and the processing efficiency of pneumatic clamps is low, which is difficult to meet production needs

Method used

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  • Edge curling die, edge curling method employing edge curling die and edge curling method used in preparation of car doors
  • Edge curling die, edge curling method employing edge curling die and edge curling method used in preparation of car doors
  • Edge curling die, edge curling method employing edge curling die and edge curling method used in preparation of car doors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment provides a crimping die, such as Figure 9 As shown, it includes: a fixing structure for fixing the board 1 and supporting the board 1 at least from the bottom of the side edge 11 of the first part of the board 1; The second side edge 12 of the plate 1 that is substantially perpendicular to the side edge 11 of the first part is bent into a horizontal state substantially parallel to the side edge 11 of the first part to form the U-shaped bead 4 .

[0057] The hemming die of this embodiment has a simple structure and is easy to use, and can directly mold a U-shaped hemming on the substantially vertical plate 1 without moving it to a pneumatic workshop for processing with a pneumatic fixture, so the processing process is fast, high productivity.

[0058] In this embodiment, the above-mentioned “substantially vertical” means that the angle between the second part side edge 12 and the first part side edge 11 is between 70° and 95°, and the “substantially par...

Embodiment 2

[0069] The present embodiment provides a method for hemming using the hemming die in Embodiment 1, comprising the following steps:

[0070] S1. Use the fixing structure to fix the first part of the side edge 11 of the board 1 in a horizontal state, so that the second part of the side edge 12 of the board 1 that is substantially perpendicular to the first part of the side edge 11 is arranged vertically upward;

[0071] S2. Align the concave portion of the crimping die 61 with the upper end portion of the second partial side edge 12, and make the second partial side edge 12 as a whole within the horizontal projection range of the concave portion;

[0072] S3. Use the concave portion to apply pressure to the second part of the side edge 12, and bend the second part of the side edge 12 into a horizontal state substantially parallel to the first part of the side edge 11 to form a U-shaped bead 4.

[0073] In step S1 , the supporting surface 622 of the crimping die 62 is used to su...

Embodiment 3

[0079] This embodiment provides a hemming method in the preparation of an automobile door, such as Figure 5-8 shown, including the following steps:

[0080] S1. Drawing the edge portion 10 of the sheet 1 into an arc-shaped portion 14 and a horizontal portion 13 connected to the arc-shaped portion 14;

[0081] S2. Trimming the horizontal portion 13 to form a via hole 2;

[0082] S3. Perform flanging processing on the arc portion 14 and the horizontal portion 13 to form a target curved surface 3, a horizontal first partial side edge 11 and a second partial side edge 12 substantially perpendicular to the first partial side edge 11 ;

[0083] S4. Perform hemming processing on the second part of the side edge 12, and the hemming processing adopts the hemming method described in Embodiment 2.

[0084] Since the hemming die in Example 1 is used, the structure is simple and the use is convenient, and the U-shaped hemming can be directly molded on the substantially vertical plate w...

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Abstract

The invention provides an edge curling die, an edge curling method employing the edge curling die and an edge curling method used in preparation of car doors. The edge curling die comprises a fixing structure and an edge curling male die (61), wherein the fixing structure is used for fixing a plate (1) and at least supports the plate (1) from the bottom of a first part side edge (11) of the plate (1); and the edge curling male die (61) is provided with a concave part used for bending a second part side edge (12), approximately perpendicular to the first part side edge (11), of the plate (1) to be in the horizontal condition approximately parallel to the first part side edge (11) so as to form a U-shaped curled edge (4). The edge curling die is simple in structure and convenient to use, and can directly process the U-shaped curled edge on the plate (1) which is approximately in the vertical condition through mold pressing without moving the plate to a pneumatic workshop to be processed by a pneumatic fixture, so that the processing is quick and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a hemming mold, a hemming method using the same, and a hemming method in the preparation of an automobile door. Background technique [0002] The inner panel of the car door is an important part in the car cover, and it is provided with a through hole for the electrical wiring to pass through. The part of the traditional inner panel of the car door close to the through hole has an inner side, and the cross-sectional shape of the inner side is like Figure 1-3 As shown in the figure, it has a section 01 facing the direction of the via hole. Because the thickness of the inner panel of the automobile door is very thin, the thickness of the section 01 is very thin, usually only a few millimeters in size, and because the current electrical wiring wire is relatively thin , so the wire is easy to be cut off after passing through the via hole and contacting the section. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D19/12B21D53/88
Inventor 张建彬李树新张明扬刘密崔小清杨学明
Owner BEIQI FOTON MOTOR CO LTD
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