CN207330729U - Molding 3D Glass Molds - Google Patents

Abstract

The utility model relates to a mould three-dimensional glass mould, it is mainly including an upper mould and bed die, the terminal surface respectively is equipped with a space layer for waiting hot pressing glass's heated surface central part under upper mould up end and the bed die, the terminal surface has the heat source to exert contact heating under upper mould up end and the bed die, the heat source has a clearance because of the space layer with the heated surface central part of upper mould and bed die, and four peripheries are zero clearance, make upper mould and bed die central part and all around have the time difference of arriving softening temperature, when hot pressing glass, wait that hot pressing glass arrives glass softening temperature by the bending portion of waiting to bend all around first, it arrives glass softening temperature to wait hot pressing glass central part again, make the long-pending heat in three-dimensional glass central part after the shaping lower with the heat content, can effectively avoid the three-dimensional glass central part after the shaping to produce the qualitative change, and avoid the middle zone of three-dimensional glass to appear because of high temperature softening and bend the arc or state that hangs down and cause to produce flat behind the hot pressing Absence of uneven traces of the faces.

Description

Molding 3D Glass Molds

technical field

The utility model relates to a glass mold, in particular to a molded three-dimensional glass mold.

Background technique

Because glass has high light transmission characteristics, display devices (such as mobile phones, watches and other electronic products) often use it as the shell of the window part. It can be seen that the surface of the handheld electronic product is usually provided with a glass casing to protect the display module inside the product. At present, most of the glass casings are in the shape of a flat plate, so a seam will be formed on the upper surface of the electronic product. Furthermore, because the periphery of the electronic product must reserve a certain width of the mechanism to fix the flat glass, the top surface of the electronic product cannot be fully utilized. Therefore, three-dimensional or curved glass has been gradually applied to glass casings of electronic products.

The flat glass case is relatively easy to manufacture, but the glass case with a three-dimensional shape is relatively difficult to manufacture. At present, there are usually two methods for manufacturing a three-dimensional glass case: the first method is to manufacture a plurality of flat glass units, and then form a three-dimensional glass case by pasting the edges. The second method is to manufacture a rectangular parallelepiped glass with a certain thickness, and then grind the rectangular parallelepiped glass multiple times to form a three-dimensional shape with multiple sides. However, the above two methods are time-consuming and labor-intensive, and the production speed is very slow. Generally speaking, since the glass material is a flat plate, if a glass with a shape is to be produced, it is better to arrange the flat glass material between an upper mold and a lower mold, and then heat the upper mold , the lower module and the glass material to soften the glass material. When the above-mentioned glass material is softened, the upper mold and the lower mold can be closed, so that the upper mold and the lower mold can jointly shape the shape of the glass material along a mold-closing direction, thereby producing the corresponding Molded glass. China Taiwan Patent, Announcement No. M452174, the patent name is used to manufacture molded glass molding equipment, the announcement date is May 01, 2013, which includes a female mold part, a first male mold part, a second A male mold part, a supporting ejector rod and a pressing rod. The first male mold part is arranged on the female mold part in an openable and closable manner, and the second male mold part is arranged between the female mold part and the first male mold part. The supporting ejector rod is passed through the female mold part, and the supporting ejector rod is used to push against the second male mold part, thereby supporting the second male mold part and the first male mold part together. Holds a molded glass. The pressing rod is arranged on one side of the first male mold part, and the pressing rod is used to press down on the first male mold part so that the first male mold part is opposite to the second male mold part The female mold part is moved to a clamping position to shape the molded glass.

China Taiwan Patent, Announcement No. I404681, Announcement Date: August 11, 2013 Mention: Generally, curved glass is formed by molding. The traditionally used glass molding device includes upper and lower molds, and the material glass embryo The material is placed in the middle, and after the upper and lower molds and the material glass blank are heated up to the plastic critical temperature, the upper and lower molds pressurize the material glass blank to change its shape. After cooling down, the material glass blank is cooled. And its surface will be correspondingly molded into the preset shape of the upper and lower mold surfaces. It is worth noting that when the known glass molding device is applied to the molding of special-shaped thin-shell curved glass, the central area of the thin plate material glass blank placed on the lower mold will be in a very large area in the early stage of mold closing. , because the thinner glass blank of thin plate material cannot bear the weight of the upper mold, so if the upper mold touches the glass blank of thin plate material before reaching the plasticizing temperature, it will easily crush the glass blank of thin plate material. This patent provides a method for molding thin plate material glass, including: setting several supporting components between an upper mold and a lower mold, and the upper mold and the lower mold are provided with corresponding at least one mold core and at least one mold cavity, the thin plate material glass is placed on the lower mold, wherein the plastic critical temperature of the supporting components is greater than or equal to the plastic critical temperature of the thin plate material glass; When the plastic critical temperature is reached, the upper mold is supported by these supporting components, so that a gap is formed between the upper mold and the lower mold. When the heating temperature reaches the plastic critical temperature of the supporting components, the upper mold is subjected to a The pressure deforms the supporting components, so that the mold core forces the thin-plate material glass to deform toward the mold cavity, so as to shape the thin-plate material glass into a glass product. It is known that after the molded glass is placed in the molding chamber, the two sides of the molded glass will contact the inner wall of the molding chamber, and the central area will be suspended inside the molding chamber. When the upper mold and the lower mold heat the molded glass, the molded glass will The middle area will show a curved or wavy state due to high temperature softening. After the upper mold and the lower mold are closed, the aforementioned arc or wavy area will produce uneven marks on the plane after hot pressing. This defect is difficult to use in the future. Process leveling affects the transparency of molded glass. China Taiwan Patent, Announcement No. M546396, Patent for Glass Forming Equipment, announced on August 1, 2017, is used for thermocompression forming of a molded glass. The glass forming equipment includes: a first mold structure, which includes A first mold part; a second mold structure, which is arranged next to the first mold structure in a relatively movable manner, and the second mold structure includes: a second mold part, which has a receiving groove and an air extraction hole in communication and a venting component, arranged on the second mold part to seal the accommodating groove, the venting component is used to carry the molded glass, and cooperates with the first mold part to respectively press the two opposite surfaces of the molded glass to hot-pressing deformation; an air extraction module, arranged outside the second mold structure, exhausting an accommodating space formed by the combination of the accommodating tank and the air-permeable component through the air extraction hole; and a heating module, used for The first mold structure and the second mold structure are heated.

The two sides of the above-mentioned molded glass will contact the inner wall of the molding chamber, and the central area is suspended inside the molding chamber. When the upper mold and the lower mold heat the molded glass, the middle area of the molded glass will sag due to high temperature softening The arc or wavy state of the mold is missing, and the utility model proposes a better and more effective mold structure, so that the hot-press molding of the molded three-dimensional glass product is more perfect.

Utility model content

In view of the lack of known technology, the technical problem to be solved by the utility model is to make the heat accumulation and heat content of the central part of the formed three-dimensional glass lower, avoid the qualitative change of the central part of the three-dimensional glass after forming, and avoid the middle area of the three-dimensional glass The curved or wavy state due to high temperature softening results in uneven plane traces after hot pressing.

In order to solve the above-mentioned technical problems, the utility model provides a molded three-dimensional glass mold, which mainly includes an upper mold and a lower mold. The central portion of the heating surface of the hot-pressed glass is provided with a space layer, and the upper end surface of the upper mold and the lower end surface of the lower mold have a heat source for contact heating. There is a gap, but there is no gap around the edge, so that there is a time difference between the center of the upper mold and the lower mold and the surrounding edge to reach the softening temperature. Until the central part of the hot-pressed glass reaches the glass softening temperature, the heat accumulation and heat content in the central part of the formed three-dimensional glass are lower, which can effectively prevent the qualitative change of the central part of the three-dimensional glass after forming, and prevent the central part of the three-dimensional glass from being affected by high temperature. The bent arc or wavy state presented by softening results in uneven plane traces after hot pressing.

The utility model also provides a molding three-dimensional glass mold, which mainly includes an upper mold, a lower mold, and a heat source, the glass to be hot-pressed is placed between the upper mold and the lower mold, and a long groove parallel to the glass to be hot-pressed is arranged in the middle of the upper mold Holes, the lower end surface of the lower mold is provided with a space layer relative to the central part of the heating surface of the glass to be hot-pressed, and the heat source is provided by non-contact radiant heat from above the upper mold and below the lower mold.

Description of drawings

Fig. 1 is the combined sectional view of an embodiment of the utility model molding three-dimensional glass mold;

Fig. 2 is the front sectional view of an embodiment of the utility model molding three-dimensional glass mold;

Fig. 3 is a side view sectional view of an embodiment of the utility model molded three-dimensional glass mold and a schematic diagram of the upper end surface of the upper mold and the lower end surface of the lower mold;

Fig. 4 is a schematic diagram of a contact heat source of the present invention;

Fig. 5 is the combined sectional view of another embodiment of the three-dimensional glass mold of the utility model;

Fig. 6 is the front cutaway view of another embodiment of the three-dimensional glass mold of the utility model and the enlarged view of the junction of the upper and lower molds;

Fig. 7 is a side view sectional view of another embodiment of the three-dimensional glass mold of the utility model, an enlarged view of the junction of the upper and lower molds, and a schematic diagram of the lower end surface of the lower mold;

Fig. 8 is a schematic diagram of the non-contact heat source of the present invention.

Explanation of symbols in the accompanying drawings:

1 upper mold; 10 upper end surface; 11 space layer; 12 through long slot hole; 2 lower mold; 20 lower end surface; 21 space layer; 3 glass to be hot-pressed; 4 heat source;

Detailed ways

In order to achieve the above-mentioned technical means of the present utility model, an embodiment is listed and described as follows with reference to the drawings, so that a better understanding of the structure, features and achieved effects of the present utility model can be obtained.

The utility model is a brand-new design for molding three-dimensional glass moulds. Referring to Fig. 1 to Fig. 4, it mainly includes an upper mold 1 and a lower mold 2, the upper end surface 10 of the upper mold 1 and the lower end surface 20 of the lower mold 2 are relatively heated. The central portion of the heated surface of the pressed glass 3 is respectively provided with a space layer 11, 21, as shown in a, b, and c in Fig. 3, the upper end surface 10 of the upper mold 1 and the lower end surface 20 of the lower mold 2 have a heat source 4 for contact heating , because there is a space layer 11, 21 between the heat source 4 and the central part of the heating surface of the upper mold 1 and the lower mold 2, there is a gap, and there is no gap around the edges, so that the center and the surrounding edges of the upper mold 1 and the lower mold 2 have a reach The time difference of the softening temperature, when the hot-pressed glass, the hot-pressed glass 3 first reaches the glass softening temperature from the surrounding parts to be bent, and then reaches the glass softening temperature at the central part of the hot-pressed glass 3, so that the central part of the three-dimensional glass after forming The heat accumulation and heat content are low, so that it can effectively avoid the qualitative change of the central part of the three-dimensional glass after molding, and effectively prevent the central area of the three-dimensional glass from being bent or wavy due to high temperature softening, which will cause it to appear after hot pressing. Absence of traces of planar unevenness.

Referring to Fig. 5 to Fig. 8, it is another embodiment of the utility model to mold a three-dimensional glass mold. Compared with the technical solution shown in Fig. And when the bottom of the lower mold 2 is provided with non-contact radiant heat, the lower mold 2 is placed on a transfer tray 5, and the space layer 11 of the upper mold 1 is provided in the middle of the upper mold 1 parallel to the glass 3 to be hot-pressed. Through the slotted hole 12, refer to Fig. 7 shown in a, b.

Furthermore, the mold of the utility model is made of graphite material, and graphite has high hardness, good electrical conductivity, radiation protection, corrosion resistance, good thermal conductivity, low cost, and high temperature resistance. Graphite materials have opposite properties to metal materials when the temperature rises. The higher the temperature, the harder the graphite is, so that the graphite will not have the problem of deformation. Therefore, the three-dimensional glass thermoforming mold is made of graphite material, which can ensure the maximum degree of precision.

The above is only a preferred feasible embodiment of the present utility model, and is not intended to limit the scope of the present utility model. For those who are familiar with this technology, they can use the equivalent structure made by the specification of the utility model and the scope of the patent application. Changes should be included in the patent scope of the present utility model.

Claims (2)

1. A molded three-dimensional glass mold is characterized in that it mainly includes an upper mold and a lower mold, a heat source, the upper mold and the lower mold are placed between the hot-pressed glass, the upper end surface of the upper mold and the lower end surface of the lower mold are relative to the hot-pressed glass The central part of the heating surface is provided with a space layer, and the heat source applies contact heating to the upper end surface of the upper mold and the lower end surface of the lower mold. 2. A molded three-dimensional glass mold is characterized in that it mainly includes an upper mold and a lower mold and a heat source, the upper mold and the lower mold are interposed with hot-pressed glass, and the middle of the upper mold is provided with a penetrating length parallel to the hot-pressed glass. The slot hole and the lower end surface of the lower mold are provided with a space layer relative to the central part of the heated surface of the glass to be hot-pressed. The heat source is heated by non-contact radiant heat from above the upper mold and below the lower mold.