Method for punching arc-shaped surface or inclined surface of television rear shell and punching die

A technology for a TV set and an arc surface is applied in the field of punching methods and punching dies for the arc surface or inclined surface of the TV rear shell, which can solve the problems of easy wrinkling of the rear shell, high rejection rate, poor appearance, etc. The effect of improved appearance quality, reduced production cost and improved clarity

Inactive Publication Date: 2010-06-02
QINGDAO HAILIDA STAMPING PARTS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the defects in the process of punching first and then stretching the curved surface or inclined surface of the traditional TV back shell, that is, the four corners of the back shell are easy to wrinkle, the appearance is poor, and the reject rate is high.

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  • Method for punching arc-shaped surface or inclined surface of television rear shell and punching die
  • Method for punching arc-shaped surface or inclined surface of television rear shell and punching die
  • Method for punching arc-shaped surface or inclined surface of television rear shell and punching die

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing.

[0018] The punching method of the curved surface or inclined surface of the TV back cover of the present invention is realized in the following way: firstly, punch and stretch the cut back cover blank, and then punch out the circle on the curved surface or the inclined surface of the back cover. When punching, the line connecting the holes A and B at the two ends of the arc of the arc surface of the back shell or the oblique line of the slope is a horizontal line, and there is an included angle between the plane of the back shell and the horizontal line, generally 20°~35° ° Angle, so that the punch is basically punched in a vertical state when punching, the punched hole has a good appearance, and the shape of the rear shell is well maintained; the position and number of the punch correspond to the position and number of the circular cooling holes, which can be Realize one-t...

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Abstract

The invention discloses a method for punching an arc-shaped surface or an inclined surface of a television rear shell, comprising the processes of punching, stretching, and the like and comprising the steps of first performing stretch forming on blank of the television rear shell; and then, punching the arc-shaped surface or the inclined surface of the television rear shell. The invention also discloses a punching die of the arc-shaped surface or the inclined surface of the television rear shell, comprising an upper die and a lower die. Punching heads which correspond to holes in the quantity and the positions of holes, which are required for punching on the arc-shaped surface or the inclined surface of the television rear shell, are installed on the upper die; and the lower die fixes the television rear shell and contains the punching heads which pass through the television rear shell. With the punching method for first stretching and then punching and the punching die, the wrinkling of the punched television rear shell can be eliminated, and the disadvantages of oval irregular shape stretched from round heat radiating holes, poor appearance and heat radiating effect, high defective rate, and the like can be overcome.

Description

technical field [0001] The invention relates to a TV casing, in particular to a punching method and a punching die for an arc-shaped or inclined surface of a TV rear casing. Background technique [0002] TV is a kind of household appliance that people often use in our daily life, and with the development and progress of science and technology, it has developed from the previous CRT picture tube TV, rear projection TV, to the current LCD LCD TV, PDP plasma TV, and just now LED TVs put on the market, and LCD / PDP / LED TVs are energy-saving, environmentally friendly, ultra-thin, and clear flat-panel TVs that are prevalent in the market at present, and the annual output is increasing sharply. PDP TV has good dynamic effect and is the first choice for those who like to watch live broadcast programs; LCD and LED are of the same kind, but the latter is more energy-saving, environmentally friendly, ultra-thin and clear, and the former will gradually be replaced by the latter in the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D35/00B21D28/32B21D28/34B29D99/00B26F1/02B26F1/14
Inventor 郝建明
Owner QINGDAO HAILIDA STAMPING PARTS
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