CN204874274U - 3D curved surface glass forming device - Google Patents

Abstract

The utility model discloses a 3D curved surface glass forming device, which comprises a heater, a vacuum generator, a cavity die, a glass lifting mechanism and a die holder, wherein the cavity die is arranged on the die holder and is provided with a forming surface and an air exhaust groove, the vacuum generator is connected with the air exhaust groove, the glass lifting mechanism is symmetrically arranged at two sides of the die holder, and the heater is arranged at the position above the forming surface; the utility model has the advantages of ingenious design, it is reasonable, make the glass that covers in die cavity mould top soften through the heater heating, vacuum generator evacuation, it produces vacuum suction to let the profiled surface through the groove of taking out air on the die cavity mould, make glass adsorb completely on the profiled surface, rationally combine together dead weight forming technique and additional external force forming technique promptly, make glass can bend into required shape accurately, the camber precision is higher, and the bad phenomenon of outward appearance has effectively been reduced, it is effectual to form, improve fashioned curved surface glass surface quality, overall structure is simple in addition, and easy realization does benefit to extensive popularization and application.

Description

3D Curved Glass Forming Device

technical field

The utility model relates to the technical field of glass forming, in particular to a 3D curved glass forming device.

Background technique

Curved glass sheets are generally used for windows of buildings or automobiles, and are generally formed by gravity bending, in which the glass sheet is heated to or above its glass transition temperature, and then the heated glass sheet is transported to On the forming mold of the forming furnace, the forming mold has a concave forming surface, and the glass plate is bent to the concave forming surface by its own gravity to form a curved glass plate. However, since the gravity bending method uses the gravity of the glass itself to sag and bend, the glass plate needs to be heated to at least the glass transition temperature of the glass plate, and the higher the forming temperature of the glass plate, the more likely it will cause defects on the glass surface, such as too rough high. And because the temperature of the glass plate is higher, its viscosity is smaller, and the fluidity of the glass plate material is also correspondingly enhanced. Although the contour deviation of the curved glass plate after forming will be smaller like this, its appearance will be poor.

In order to reduce the profile error, the glass plate blank can be heated to the glass transition temperature, and then squeezed up and down into a predetermined shape by a mold. Using the mold extrusion molding method, since the mold needs to be in contact with the upper and lower surfaces of the glass plate blank during molding, the concave curved surface and convex curved surface of the curved glass after molding have greater roughness and more surface defects.

Utility model content

In view of the above disadvantages, the purpose of this utility model is to provide a 3D curved glass forming device with ingenious and reasonable structural design, which can effectively reduce the phenomenon of poor appearance and has good forming effect.

In order to achieve the above purpose, the technical solution provided by the utility model is: a 3D curved glass forming device, which includes a heater, a vacuum generator, a cavity mold, a glass lifting mechanism and a mold base, and the cavity mold is arranged on On the mold base, and the upper surface of the cavity mold is provided with a molding surface, the cavity mold is provided with an air extraction groove connected with the molding surface, the vacuum generator is connected with the air extraction groove, and the glass The lifting mechanism is symmetrically arranged on both sides of the mold base, and the heater is arranged above the molding surface.

As an improvement of the utility model, the cavity mold is a silicon carbide ceramic body. It has high thermal conductivity and high temperature mechanical properties, can withstand high temperature during glass forming, and has excellent oxidation resistance, good corrosion resistance, high wear resistance and low friction coefficient, hardness is higher than glass, mold during forming process Not easy to wear and tear.

As an improvement of the utility model, the glass lifting mechanism includes a linear telescopic device and a suction cup arranged on the telescopic device of the linear telescopic device.

As an improvement of the utility model, the linear expansion device is an air cylinder, an oil cylinder or a linear motor.

As an improvement of the utility model, the heater includes a plate body and a plurality of heating pipes arranged side by side in the plate body.

The beneficial effects of the utility model are as follows: the utility model has an ingenious and reasonable structural design, the glass covering the cavity mold is softened by heating with a heater, the vacuum generator evacuates, and the forming surface is cooled by the air suction groove on the cavity mold. Generate vacuum suction, so that the glass is completely absorbed on the forming surface, that is, the reasonable combination of self-weight forming technology and additional external force forming technology, so that the glass can be accurately bent into the desired shape, the curvature accuracy is high, and the appearance is effectively reduced. Phenomenon, good forming effect, improve the surface quality of the formed curved glass, in addition, the overall structure is simple, easy to realize, which is conducive to wide popularization and application.

Below in conjunction with accompanying drawing and embodiment, the utility model is further described.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic structural view of the utility model when glass is formed.

Detailed ways

Referring to Fig. 1 and Fig. 2, a kind of 3D curved surface glass forming device provided by the present embodiment, it comprises heater 1, vacuum generator 2, cavity mold 3, glass lifting mechanism 4 and mold base 5, and described cavity mold 3 is set on the mold base 5, and the upper surface of the cavity mold 3 is provided with a molding surface, and the cavity mold 3 is provided with a suction groove 31 connected with the molding surface, and the vacuum generator 2 and the suction The air grooves 31 are connected to each other. Preferably, there are multiple air extraction grooves 31, so that the adsorption effect is better.

The glass lifting mechanism 4 is arranged symmetrically on both sides of the mold base 5 , specifically, the glass lifting mechanism 4 includes a linear telescopic device 41 and a suction cup 42 arranged on the telescopic device 41 . The linear expansion device 41 is preferably an air cylinder, and in other embodiments, the linear expansion device 41 can also be an oil cylinder or a linear motor.

The heater 1 is arranged above the molding surface. Specifically, the heater 1 includes a plate body and a plurality of heating pipes arranged side by side in the plate body.

Preferably, the cavity mold 3 is preferably a silicon carbide ceramic body, that is, made of silicon carbide ceramic material. It has high thermal conductivity and high temperature mechanical properties, can withstand high temperature during glass forming, and has excellent oxidation resistance, good corrosion resistance, high wear resistance and low friction coefficient, hardness is higher than glass, mold during forming process Not easy to wear and tear.

When working, the glass 6 is placed on the glass lifting mechanism 4, and the glass lifting mechanism 4 runs down to place the glass 6 on the molding surface of the cavity mold 3, and the heater 1 heats to soften the glass 6. At the same time, the vacuum generator evacuates, Through the suction groove 31 on the cavity mold 3, a vacuum suction is generated on the molding surface, so that the glass 6 is completely absorbed on the molding surface, and can be accurately bent into a desired shape, and the molding effect is good.

According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model belongs can also change and modify the above embodiment. Therefore, the utility model is not limited to the specific implementation manners disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model. As described in the above embodiments of the utility model, molds of other structures obtained by adopting the same or similar structure are all within the protection scope of the utility model.

Claims (5)

1. A 3D curved glass molding device, characterized in that it comprises a heater, a vacuum generator, a cavity mold, a glass lifting mechanism and a mold base, the cavity mold is arranged on the mold base, and the cavity mold The upper surface of the upper surface is provided with a molding surface, the cavity mold is provided with an air extraction groove connected with the molding surface, the vacuum generator is connected with the air extraction groove, and the glass lifting mechanism is symmetrically arranged on both sides of the mold base. On the side, the heater is arranged above the molding surface. 2. The 3D curved glass forming device according to claim 1, wherein the cavity mold is a silicon carbide ceramic body. 3. The 3D curved glass forming device according to claim 1 or 2, wherein the glass lifting mechanism comprises a linear telescopic device and a suction cup arranged on the telescopic device of the linear telescopic device. 4. The 3D curved glass forming device according to claim 3, wherein the linear expansion device is an air cylinder, an oil cylinder or a linear motor. 5 . The 3D curved glass forming device according to claim 1 , wherein the heater comprises a plate body and a plurality of heat pipes arranged side by side in the plate body. 5 .