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Drawing die

A technology of drawing dies and punches, applied in the field of drawing dies, can solve problems such as wrinkling and cracking of parts, uneven material flow, large cross-section differences, etc., to shorten the development cycle, smooth material flow, reduce The effect of development costs

Inactive Publication Date: 2011-12-28
BEIQI FOTON MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In addition, due to the different shapes of drawn products, some products have large cross-sectional differences at different positions after forming, so there are different inflows. If there is no treatment, if the inflow difference is too large, the formed product will appear wrinkling and cracking
If the blankholder of a parting line is still designed according to the routine, the material flow will not be uniform during drawing, and it is difficult to solve the problem of wrinkling and cracking of parts

Method used

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Embodiment Construction

[0022] In order to further understand the characteristics and technical content of the present invention, please refer to the following detailed description and drawings related to the present invention, but this description and the accompanying drawings are only used to illustrate the present invention, not to limit the present invention.

[0023] Such as figure 1 As shown, it is a schematic diagram of the assembly structure of the drawing die of the present invention. The drawing die includes two independent punches 4, a die 3 and a "day"-shaped blank holder 5. When in use, two punches 4 are placed on the The "day"-shaped blankholder 5, place a plate on the blankholder 5, place the die 3 on the plate, and then fix the drawing die through the upper mold base 1 and the lower mold base 2 to realize the drawing of the plate. delay.

[0024] Such as figure 2 Shown is the three-dimensional schematic view of the die of the present invention, image 3 It is a sectional view of t...

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Abstract

The invention relates to a new type of drawing die, including a concave die, a punch and a blank holder; wherein the punch is two independent punches, and the blank holder is in the shape of "日"; the "日" character The blank holder includes a frame and a pressure bar connected to the corresponding frame; the drawing die is different from the parting structure of the traditional mold, but divides a punch into two independent punches, and the blank holder It is designed in a "day" shape, so that two parting lines are formed at the predetermined gap between the middle pressure rod of the "day" shape blank holder ring and the punch, which can ensure that the complex plate parts can be cut at one time without division. Successful drawing can avoid wrinkling, which can reduce the difficulty of drawing forming debugging, shorten the mold development cycle, and reduce the mold development cost.

Description

technical field [0001] The invention relates to a drawing die, in particular to a new drawing die for automobile covering parts. Background technique [0002] At present, the drawing dies used for automobile panels with only outer contours are usually composed of three major parts: a punch, a die, and a blank holder. However, in the prior art, only one parting line is formed between the punch and the blank holder along the inner edge of the blank holder frame and the punch. Therefore, for products with large drawing depth and complex molding, such as automobile panels, it is difficult to debug the drawing. Move and delay. When double-action drawing is used, the drawing speed is slower, the production efficiency is low, and the production cost is higher than that of single-action drawing. Second, the use of secondary drawing. When secondary drawing is used, the cost of mold development and stamping production cost will be increased. 3. Divide the product parts into sever...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D22/20
Inventor 马小喆吴锦缑彦甫
Owner BEIQI FOTON MOTOR CO LTD
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