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Covering part forming mold and design and use method thereof

A technology for forming molds and covering parts, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of complex forming deformation process, increased mold cost, uneven stress, etc., to reduce design cycle, low maintenance cost, The effect of reducing manufacturing costs

Inactive Publication Date: 2012-11-28
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Large-scale coverings on automobile or tractor bodies or other products with similar shapes to coverings are widely used, and their shape is theoretically formed by multiple shallow drawing deformations or (and) local bulging deformations. The comparison of each deformation zone Complex, so the shape of the cover generally has a complex space surface, and the rigid forming die is commonly used for stamping and forming. The forming deformation process is more complicated, the stress is uneven everywhere, and it is easy to produce more unqualified products, and the production cost is high. Therefore, it is necessary to improve the difficulty of mold design to reduce the damage of products due to complex forming; Increased the cost of all aspects of the mold

Method used

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  • Covering part forming mold and design and use method thereof
  • Covering part forming mold and design and use method thereof
  • Covering part forming mold and design and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 The structure and parameter design of the cover forming mold of the present invention

[0037] The covering part of the present invention may be large, medium and small covering parts used on automobiles, tractors or airplanes and other similar vehicle bodies. Such as figure 1 As shown, the cover forming mold includes a punch base 1, a punch 2 installed on the punch base, a binder ring 3, and a die 7 with a stopper 4 at the mouth 13. A top piece plate 12 and a die vent hole 8 are provided, the punch 2 is provided with a punch vent 9, and the punch vent 9 is connected to the atmosphere with a one-way pressure control valve 9'; There is a complete sealing fit between the material ring 3 and the punch 2, and there is no loosening phenomenon during the pressing process; a back-to-block guide plate 10 and a stroke control block 6 are provided outside the die 7 . The lower end of the binder ring 3 is provided with a binder ring foot 5 for cooperating with the ...

Embodiment 2

[0054] Example 2 Method of forming a cover using the mold of the present invention

[0055] Use the air pressure forming method of mold forming covering of the present invention, comprise following process:

[0056] (1) Place the blank on the die mouth and position it;

[0057] (2) The double-action press first presses the binder ring against the blank;

[0058] (3) The press continues to move the punch downward for stamping. Since the one-way pressure control valve on the punch is in a closed state, a closed space is formed between the punch, the blank and the binder ring, and the air in this space moves along with the punch. The downward direction is compressed, and the air pressure generated causes the blank to gradually deform and fit on the die, and finally completely press it on the surface of the die to form a cover;

[0059] (5) demoulding. During the demoulding process, when the air pressure in the enclosed space is less than 0.9-1.1 standard atmospheric pressure, ...

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Abstract

The invention provides a covering part forming mold and a design and use method thereof, and relates to the field of soft molds. The covering part forming mold comprises a convex mold seat and a convex mold arranged on the convex mold seat, and also comprises a concave mold, wherein the opening part of the concave mold is provided with a stopping block; the concave mold is internally provided with a jacking plate and a concave mold ventilating hole; the mold also comprises a pressing ring; the convex mold is provided with a convex mold ventilating hole; and the position of the convex mold ventilating hole, which is communicated with the atmosphere, is provided with a one-way pressure control valve which is closed when in stamping. The covering-part forming mold provided by the invention has the advantages that the design with the convex-mold structure is adopted, the manufacture is simple, the generality is strong, the service life is greatly prolonged, and the mold is made of engineering plastic. A manufactured covering part is high in accuracy, low in cost and short in manufacturing period. The method for forming the covering part is high in accuracy and low in cost.

Description

technical field [0001] The invention relates to the field of moulds, in particular to a mold for forming a covering part and its design and use method. Background technique [0002] Large-scale coverings on automobile or tractor bodies or other products with similar shapes to coverings are widely used, and their shape is theoretically formed by multiple shallow drawing deformations or (and) local bulging deformations. The comparison of each deformation zone Complex, so the shape of the cover generally has a complex space surface, and the rigid forming die is commonly used for stamping and forming. The forming deformation process is more complicated, the stress is uneven everywhere, and it is easy to produce more unqualified products, and the production cost is high. Therefore, it is necessary to improve the difficulty of mold design to reduce the damage of products due to complex forming; Increased the cost of all aspects of the mold. Contents of the invention [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D37/20B21D22/02
Inventor 张石平
Owner HUAIHAI INST OF TECH
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