CN102408184A - Curved three-dimensional panel mold and manufacture method thereof - Google Patents

Abstract

The invention discloses a curved three-dimensional panel mold and a manufacture method thereof, and relates to a curved three-dimensional panel mold and a process method for manufacturing a panel by using the same. The mold comprises an upper mold core and a lower mold core, wherein an upper mold cavity is arranged on the upper mold core; a lower mold cavity matched with the upper mold cavity is arranged on the lower mold core; and the base bodies of the upper mold core and lower mold core are prepared and shaped from a tungsten carbide (WC) or ceramic or graphite material. The method comprises the following steps: firstly placing a nitre material in a mold; heating the nitre material and the mold in a furnace at the same time; softening the nitre material, and simultaneously applying pressure on the mold; transferring the pressure to the nitre material by virtue of the mold, and deforming and shaping the nitre material; and maintaining the pressure of the mold, simultaneously cooling to maintain the surface shape of a glass element, and taking out the glass element. In the invention, a technique for manufacturing a glass non-spherical surface by using the mold is mainly provided, and the mold with a special design is matched, thus curved three-dimensional panels of various shapes can be manufactured in batches by using the mold. The manufacture method has the advantages of high production effect, low cost and the like.

Description

Curved surface object panel mould and method of manufacture thereof

Technical field

The present invention relates to the process method of a kind of curved surface object panel mould and manufacturing panel thereof; Be mainly used in the manufacturing of electronic product window panel, its main application comprises handheld mobile devices such as mobile phone screen (touch screen, non-touch screen), MP4 screen, MP3 screen, panel computer, PDA.

Background technology

At present, electronic product renewal speed such as smart mobile phone are swift and violent, and the consequent is to the increase of screen panel demand and becomes more diverse.Along with emerging of curved surface mobile phone faceplate; People more and more pursue the curve screens panel; But the processing of existing plane or curved glass panel all adopts cold working methods such as cutting, grinding to carry out; But, use cold processing technique processing free form surface and irregular tabular face to exist the following conspicuous shortcoming that has:

One, complete processing is complicated, the complete processing difficulty;

Two, working (machining) efficiency is low, and tooling cost is high, can not satisfy mass-produced needs.

Three, the processing good article rate is low.

Four, the segment glass material is to use cutting, grinding cold working mode to reach surface accuracy and the smooth finish that needs.

In sum, the form panel that adopts the manufacturing of specific glass cutting production line to form is difficult to satisfy the present market requirement.

The model technology has had 20 years of development historical, and the model technology is applied to making high precision non-spherical lens technical field more.The present invention can use aspheric surface model technology processing curve flat-type optical window panel, can bring into play the speciality of model technology breakthroughly, effectively reduces the production cost of curved surface panel, improves production efficiency of products.

Summary of the invention

To the deficiency that above-mentioned prior art exists, the object of the present invention is to provide a kind of model precision is high, production efficiency is high curved surface object panel mould and method of manufacture thereof, can solve the problems of the technologies described above effectively.

The object of the invention is realized through following technical proposals:

A kind of curved surface object panel mould comprises upper cores and following die, and upper cores is provided with upper cavity, and following die is provided with the lower mode cavity that is complementary with upper cavity, and upper cores and following mold matrix are by wolfram varbide (WC) or pottery or graphite material manufacturing moulding.

As preferably, the base shape of said upper cores and following die is cuboid or the square or the cylinder bodily form or irregularly shaped, and also is arranged with the helical pitch inner core between upper cores and the following die.

As preferably, said upper cavity and lower mode cavity are provided with film.

A kind of curved surface object method for producing panel, this method may further comprise the steps:

1. the helical pitch inner core is set between upper cores and the following die mold cavity of the upper cavity of then glass nitre material being put into upper cores and the lower mode cavity formation of following die;

2. the mould that glass nitre material will be housed places the heating installation internal heating;

3. treat that glass nitre material is softening, apply positive pressure through pressure exerting device to the upper and lower die of mould simultaneously, the pressure transmission of mould to glass nitre material, the distortion of glass nitre material also is molded as required curved surface object panel-shaped;

4. the maintenance die pressure is lowered the temperature simultaneously and is cooled off, and makes glass elements face type be maintained;

5. take out the face glass element.

As preferably, said heating installation is infrared heating oven or electroheat pair process furnace.

The present invention compares than prior art, has the following advantages and beneficial effect:

The present invention has mainly proposed a kind of use moulded glass aspheric surface technology, cooperates the mould of unique design, can process the curved surface object panel part of different shape, and this processing mode can solve the technical problem that the traditional cold processing mode exists easily.Complete processing of the present invention is simple, only needs simple several procedures just can reach the purpose of production high precision best bright finish minute surface; Can produce in batches, production effect is high, and higher good article rate is arranged, and is convenient to cost control; And the part cold working mode can not material processed also can use this mode to process.

Description of drawings

Fig. 1 is a various curved surface object panel construction synoptic diagram of the present invention;

Fig. 2 is the structural representation of upper cores of the present invention and following die;

Fig. 3 is a kind of curved surface object panel mould synoptic diagram of the present invention;

Fig. 4 is an another kind of curved surface object panel mould synoptic diagram of the present invention;

Fig. 5 is a curved surface object method for producing panel schema of the present invention.

Wherein, the pairing name of the Reference numeral in the accompanying drawing is called:

The 1-upper cores, die under the 2-, 3-helical pitch inner core, 4-curved surface object panel, 11-upper cavity, 21-lower mode cavity.

Embodiment

Below in conjunction with embodiment the present invention is done to specify further:

Embodiment

As shown in Figure 2, a kind of curved surface object panel mould comprisesupper cores 1 and following die 2, and Fig. 2 among Fig. 2-1 is aupper cores 1, and Fig. 2-2 is following die 2.Upper cores 1 is provided withupper cavity 11, and following die 2 is provided with thelower mode cavity 21 that is complementary withupper cavity 11, and the matrix ofupper cores 1 and following die 2 is by wolfram varbide (WC) or pottery or graphite material manufacturing moulding.Like Fig. 3～shown in Figure 4; The base shape ofupper cores 1 and following die 2 is cuboid or the square or the cylinder bodily form or irregularly shaped; And also be arranged with helical pitch inner core 3 (as shown in Figure 4) betweenupper cores 1 and the followingdie 2, the matrix of helical pitchinner core 3 is by wolfram varbide (WC) or pottery or graphite material manufacturing moulding.The accessory of helical pitchinner core 3 for cooperating upper and lower die moulding to design, helical pitchinner core 3 can guarantee the specifications such as product top and bottom off-centre after 4 moulding of curved surface object panel, have improved quality product.Helical pitchinner core 3 structures are for having a basal body structure; Base shape is rectangular parallelepiped or square or right cylinder or other regular shape structure and shape; The centre be with die up and down can assembling match through-hole structure, the structural shape in hole is looked the profile of die and is decided.

Scribble or be coated with onupper cavity 11 and thelower mode cavity 21 and have release and film provide protection, whetherupper cavity 11 andlower mode cavity 21 need material that the thickness of membrane structure or film looks institute's moulding with the tackiness of die matrix material and decide.

But Fig. 1 is the various curved surface object panel-shaped of the present invention's model, and the contour substrate of the curvedsurface object panel 4 shown in Fig. 1-1 is regular shapes such as rectangle, square, circle, and two-sided or single face is free form surface, arc or corrugated structure; Curvedsurface object panel 4 shown in Fig. 1-1 also can for: contour substrate is regular shapes such as rectangle, square, circle; Single face is plane, wavy surface, arc, free form surface; Another side has plane, wavy surface, arc, the free form surface structure of chamfering or fillet structure for periphery, and perhaps double-faced peripheral has plane, wavy surface, arc, the free form surface structure of chamfering or fillet structure.The contour substrate of the curvedsurface object panel 4 shown in Fig. 1-2 is regular shapes such as rectangle, square, circle, and single face is plane or arc, and another side is that stepped arc is constructed the perhaps two-sided stepped cambered surface structure that is; Curvedsurface object panel 4 shown in Fig. 1-2 also can for: contour substrate is regular shapes such as rectangle, square, circle; Single face is plane, wavy surface, arc, free form surface; Another side is compound wavy surface (it means this face is that rips curved surface by a lot of quantity forms the structure that a profile is similar to plane, wavy surface, arc, free form surface), perhaps two-sidedly is compound wavy surface structure.The contour substrate of the curvedsurface object panel 4 shown in Fig. 1-3 is regular shapes such as rectangle, square, circle; Single face is plane, wavy surface, arc, the free form surface structure with array structure, perhaps two-sided wavy surface, arc, the free form surface structure with array structure that be.The contour substrate of the curvedsurface object panel 4 shown in Fig. 1-4 is an annular, and annular cross section is that circle, ellipse, rectangle, square structure or top and bottom, cross section are waviness, zig-zag, free form surface, arc structure.The contour substrate of the curvedsurface object panel 4 shown in Fig. 1-5 is regular shapes such as rectangle, square, circle, and single face is plane or free form surface, and another side is that stepped free form surface is constructed the perhaps two-sided stepped free form surface structure that is.The contour substrate of the curvedsurface object panel 4 shown in Fig. 1-6 is regular shapes such as rectangle, square, circle; Single face is plane, wavy surface, arc, free form surface; Another side is plane, wavy surface, arc, the free form surface that periphery has convexity (or depression) structure, and perhaps double-faced peripheral has plane, wavy surface, arc, the free form surface of convexity (or depression) structure; Curvedsurface object panel 4 shown in Fig. 1-6 also can for: contour substrate is regular shapes such as rectangle, square, circle; Single face is plane, wavy surface, arc, free form surface; Another side is plane, wavy surface, arc, the free form surface structure that a part has imaging len class formation (aspheric surface surface structure or Fresnel Lenses structure), and perhaps two-sided a part has plane, wavy surface, arc, the free form surface structure of imaging len class formation (aspheric surface surface structure & Fresnel Lenses structure).

A kind of curved surface object method for producing panel, as shown in Figure 5, this method may further comprise the steps:

1. helical pitchinner core 3 is set betweenupper cores 1 and the followingdie 2, then glass nitre material is put into the mold cavity that thelower mode cavity 21 ofupper cavity 11 and the following die 2 ofupper cores 1 constitutes, and closedupper cores 1 and following die 2 and form unitary mould;

2. the mould that glass nitre material will be housed places the heating installation internal heating, and heating installation of the present invention is infrared heating oven or electroheat pair process furnace, and heating installation conducts heat to mould through media such as air or heat-conducting plates, and mould is heat transferred glass nitre material;

3. treat that glass nitre material is softening; Apply positive pressure (positive pressure that pressure exerting device applies is neglected the material that glass nitre material selects for use greatly and decided) through pressure exerting device to the upper and lower die of mould simultaneously; The pressure transmission of mould to glass nitre material, the distortion of glass nitre material also is molded as required curved surface object panel-shaped (mold temperature of stereoscopic panel product is that a TR is interval);

4. the maintenance die pressure is lowered the temperature simultaneously and is cooled off, and to eliminate the effect of curved surface object panel internal stress, makes glass elements face type be maintained;

5. theupper cores 1 of divided mould and following die 2, and taking-up face glass element.

Use mould of the present invention and model method can easily produce the various curved surface object panels shown in Fig. 1, and this model method protects mould, and improved mould model number of times.Compare traditional cold processing curve stereoscopic panel, have advantages such as surface accuracy height, production effect is high, production cost is low.

The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1. curved surface object panel mould; Comprise upper cores (1) and following die (2); Upper cores (1) is provided with upper cavity (11); Following die (2) is provided with the lower mode cavity (21) that is complementary with upper cavity (11), it is characterized in that: upper cores (1) and following die (2) matrix are by wolfram varbide (WC) or pottery or graphite material manufacturing moulding.

2. according to the described curved surface object panel of claim 1 mould; It is characterized in that: the base shape of said upper cores (1) and following die (2) is cuboid or the square or the cylinder bodily form or irregularly shaped, and also is arranged with helical pitch inner core (3) between upper cores (1) and the following die (2).

3. according to the described curved surface object panel of claim 1 mould, it is characterized in that: said upper cavity (11) and lower mode cavity (21) are provided with film.

4. curved surface object method for producing panel, this method may further comprise the steps:

Helical pitch inner core (3) is set between upper cores (1) and the following die (2), then glass nitre material is put into the mold cavity that the lower mode cavity (21) of upper cavity (11) and the following die (2) of upper cores (1) constitutes;

The mould that glass nitre material is housed is placed the heating installation internal heating;

Treat that glass nitre material is softening, apply positive pressure through pressure exerting device to the upper and lower die of mould simultaneously, the pressure transmission of mould to glass nitre material, the distortion of glass nitre material also is molded as required curved surface object panel-shaped;

Keep die pressure, cooling cooling simultaneously makes glass elements face type be maintained;

Take out the face glass element.

5. according to the described curved surface object method for producing panel of claim 4, it is characterized in that: said heating installation is infrared heating oven or electroheat pair process furnace.

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