CN104889248A

CN104889248A - Curved-surface LED display backboard stamping die machining method

Info

Publication number: CN104889248A
Application number: CN201510305274.6A
Authority: CN
Inventors: 关超; 朴日模
Original assignee: JIANGSU FANRUN ELECTRONICS CO Ltd
Current assignee: JIANGSU FANRUN ELECTRONICS CO Ltd
Priority date: 2015-06-08
Filing date: 2015-06-08
Publication date: 2015-09-09

Abstract

The invention relates to a curved-surface LED display backboard stamping die machining method. The method is characterized in that used raw materials are sheets, the sheets are formed into curved-surface sheet bodies on first project curved surfaces, and other subsequent processes such as trimming, convex hull shaping, clamp hook forming, hole stamping, engraving, burr pressing, little bending, engraving, sprouting and complete-cycle bending are all finished on the formed curved-surface sheet bodies. During curved-surface forming, a male die, a female die and a pressure plate are provided, the working surface is a curved surface, pressing ribs are arranged on the die pressure plate, stretching and curved-surface stabilization are facilitated, and accordingly production efficiency is increased, and waste is reduced.

Description

A kind of curved surface LED display backplane diel processing method

Technical field

The present invention relates to a kind of curved surface LED display important feature parts (BOT CHASSIS) backboard diel processing method.

Background technology

(OLED BOT CHASSIS) curved surface backboard is used to install curved surface liquid crystal panel and circuit board important feature parts.Curved surface backboard is similar relative to the structure of flat back plate, surrounding has the forming surface of bending edges, backboard there are many locating holes, projection, fluctuating, the snap fit of recessed, chamfering, various shape, the structure such as to sprout, difference be curved surface backboard as above all process structures be complete on curved surface, production difficulty is larger.

Existing mould production method:

Method 1: before last bending molding process, produce by general closed planar backboard method, and complete curved surface technique or increase by a curved surface shaping process to reach backboard curved surface object after bending molding process completes while bending molding process.

Method 2: curved surface first completes, first in the first engineering tensile box-like extrusion that to go out bottom be curved surface, after other techniques as shaping in trimming, convex closure shaping, snap fit, hole punching press, marking, dabbing thorn, little bending, mark, to sprout and all-round bending etc. is all carried out on curved surface basis.

The above method 1 solution technique defect is: locating hole, projection, recessed, chamfering, snap fit, the technique such as to sprout first complete on datum plane, and after curved surface forming, the relative position of these technique shapes changes, size generation relatively large deviation.Product quality is unstable, increases assembly difficulty.

And although the technology curved surface of method 2 completes after first completing other techniques, overcome the problem of method 1 fitted position instability, curved surface box-like stretching itself produce again new defect:

1. stock utilization is low, and the box like structure up and down of extrusion is slave part, after engineering to excise, cause waste of material;

2., when stretching box body carries out outline die, waste material die cutting is side and the extension composition of box body, and waste material is irregular stereo shape, and take up room large, more than 4 waste from stackings just may result in blockage, and manually will not stop process, waste of manpower in therefore producing.

Summary of the invention

In order to overcome the defect of prior art, the invention provides a kind of new curved surface backboard mould production technology.

Mould manufacturing method of the present invention is:

1. first go out the lamellar body of curved surface at the first engineering tensile, the arc-shaped side of lamellar body is formed by the extension of product curved-surface natural as Suo Shi (2) in Fig. 2, shaping the while of the convex closure on product, section difference and its curved surface.Mould (as Fig. 3) is designed with punch (2), die (1) and holding pad (3), the working surface of punch (2), die (1) and holding pad (3) is designed to curved surface, product curved surface forming completes by punch (2) and die (1) extruding laminating, panel beating tablet is pushed down when the effect of holding pad (3) is shaping, make it carry out plastic deformation, ensure that curved surface forming is stablized.

2. as shaping in trimming, convex closure shaping, snap fit in five engineerings, hole punching press, marking, dabbing thorn, little bending below, mark, to sprout and all-round bending etc. is all carried out on the curved surface first completed, and mould is provided with punch and die equally.

3. the camber ratio product radian originally of the working surface top-surface camber of the first engineering shaping mould punch, die and holding pad described in is little 200 degree, and object causes radian to become large to compensate sheet-metal formed resilience.

4. the 2nd, 3,4,5,6 engineering moulds described in are designed with punch and die equally, and its working surface shape is arc, consistent with the radian of the first engineering (i.e. curved surface forming engineering) punch and cavity die camber, less 200 degree than product radian originally equally.

5. in the first engineering described in, holding pad working surface shape is arc, consistent with the radian of cavity die camber, less 200 degree than product radian originally equally.Which is provided with beading (as Fig. 4), to increase holding pad pressure-plate-force, beading is than relative position height 4MM on its place holding pad curved surface, and beading cross sectional view is radius 4.0MM circular arc, and be highly 4.0MM, width is 8.0MM.

6. stamping products raw materials is sheet material, and pressing equipment used is the automatic assembly line that six punch presses are integrated.

After adopting technical solution of the present invention: not only make Curved LCD backboard stable molding reliable, locating hole on backboard, projection, recessed, chamfering, the fluctuating of various shape, snap fit, the labyrinth position dimension such as to sprout is accurate, and first engineering mold forming structure simple, trimming blanking engineering is simple.

Accompanying drawing explanation

Fig. 1, Curved LCD backboard product figure

Fig. 2, curved surface forming lamellar body

(1) shown in figure is product beading, and (2) are lamellar body arc-shaped side

Fig. 3, curved surface forming structure sectional view

(1) shown in figure is die, and (2) are punch, and (3) are holding pad, and (4) are beading

Fig. 4, curved surface forming de-material beading sectional view

Fig. 5, the stamping process program of invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, mode of the present invention is further elaborated:

According to described scheme of the invention, 6 molds made are arranged on respectively installation and debugging on 6 stamping machines put in place according to new scheme.

The division of labor is so substantially:

Sheet stock is entered No. 1 stamping machine, working face is curved surface and is about to material embryo under being provided with the holding pad of beading to be pressed on the die that same working face is curved surface, then punch is advanced into down die is again curved surface lamellar body by material embryo forming, and the convex closure simultaneously on curved surface also stretches together.

By mechanical arm, semi-finished product taking-up in No. 1 stamping machine is transferred to No. 2 stamping machines, to product design blank, convex closure shaping on curved surface, snap fit is shaping.

By mechanical arm, semi-finished product taking-up in No. 2 stamping machines is transferred to No. 3 stamping machines, product design remainder blank, aperture punching press on curved surface, marking, locally-shaped etc.

By mechanical arm, semi-finished product taking-up in No. 3 stamping machines is transferred to No. 4 stamping machines, product section dabbing stings, little bending, marking, locally-shaped.

By mechanical arm, semi-finished product taking-up in No. 4 stamping machines is transferred to No. 5 stamping machines, the whole dabbing thorn of product remainder, aperture dabbing stings, and sprouts.

By mechanical arm, semi-finished product taking-up in No. 5 stamping machines is transferred to No. 6 stamping machines, all-round bending adds the shaping of part curved surface, and punching press completes.

Claims

1., for a punching production method for Curved LCD backboard, be first curved surface lamellar body in the first engineering panel beating plate material forming, follow-up each engineering is carried out as trimming on its curved surface lamellar body, convex closure shaping, punching, all-round dabbing thorn, the techniques such as all-round bent reshaping.

2. it is characterized in that: the first engineering is shaped to curved surface lamellar body, two arc-shaped sides of lamellar body are formed by curved-surface natural extension, mould is designed with punch (2), die (1) and holding pad (3), and the working surface of punch (2), die (1) and holding pad (3) is designed to curved surface.

3. the camber ratio product radian originally of the working surface top-surface camber of the first engineering shaping mould punch, die and holding pad is little 200 degree according to claim 1.

4. holding pad working surface shape is arc in the first engineering according to claim 1, consistent with the radian of cavity die camber, less 200 degree than product radian originally equally.

5. which is provided with beading, beading is than relative position height 4MM on its place holding pad curved surface, and beading cross sectional view is radius 4.0MM circular arc, and be highly 4.0MM, width is 8.0MM.

6. manufacture method according to claim 1, second, three, four, five, six each engineerings, mould is provided with punch and die equally, punch and die working surface shape are arc, consistent with the radian of the first engineering (i.e. curved surface forming engineering) punch and cavity die camber, less 200 degree than product radian originally equally.

7. be sheet material according to claim 1 stamping products raw materials, pressing equipment used is the automatic assembly line that six punch presses are integrated.