CN206902027U - A kind of oxidation of glass hot-bending die - Google Patents

Abstract

The utility model discloses a kind of oxidation of glass hot-bending die, it is made up of nitrogen pot, air pump, pipeline, gas flow regulating valve；Pure nitrogen is full of in nitrogen pot；Nitrogen in nitrogen pot can be pumped into inside glass bending forming room by air pump；Gas flow regulating valve can adjust nitrogen pump output.

Description

An anti-oxidation device for a glass hot bending mold

technical field

The utility model relates to an anti-oxidation device for a glass hot bending mold, in particular to a nitrogen adding device for a glass hot bending machine.

Background technique

Curved glass hot bending technology is to put the existing flat glass into the hot bending mold, and preheat the mold and glass through the heating plates above and below the mold. After preheating to a certain temperature, the mold needs to be pushed to the heating station to continue Heating to soften the glass in the mold, and then pressing down the mold to press the glass into the required curved shape; the temperature inside the molding chamber is very high during the glass heating and forming process, and the interior is filled with air. The graphite mold is in a high temperature environment It is very easy to oxidize, and the flatness of the punch and die of the mold will decrease after oxidation, and pitting will appear, which will lead to pitting or bubbles in the formed curved glass.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a nitrogen adding device for a glass hot bending machine which has a reasonable structure and can protect the hot bending graphite mold in the high temperature environment of the molding chamber and prevent the graphite mold from oxidation.

For solving the problems referred to above, the technical scheme that the utility model adopts is as follows:

The utility model discloses an anti-oxidation device for a glass hot bending mold, which is composed of a nitrogen tank, an air pump, a pipeline and a gas flow regulating valve; the nitrogen tank is filled with pure nitrogen; the air pump can pump the nitrogen in the nitrogen tank to the glass Inside the hot bending forming room; the gas flow regulating valve can adjust the nitrogen pumping volume.

The mold is a graphite mold with good thermal conductivity.

The punch of the mold is matched with the die, and the forming block of the punch is put into the forming groove of the die for extrusion molding.

The glass hot-bending molding chamber should be filled with nitrogen gas before the graphite mold is put into the molding chamber.

The nitrogen has an anti-oxidation protective effect on the graphite mould.

Compared with the prior art, the beneficial effects of the utility model are:

Nitrogen is introduced into the glass hot bending forming room to discharge the air in the forming room, so that the graphite mold is isolated from the air, preventing the oxidation of the graphite mold under high temperature conditions, prolonging the service life of the graphite mold and effectively reducing the cost of replacing the mold , Improve the quality and yield of hot-bending glass products.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model;

Explanation of reference signs: 1-glass hot bending forming room; 2-pipeline; 3-air pump; 4-gas flow regulating valve; 5-nitrogen tank; 11-mold;

Fig. 2 is a schematic diagram of the mold structure;

Explanation of reference numerals: 6-locating pin; 7-punch; 8-concave; 9-flat glass; 10-boss; 11-mold.

detailed description

As shown in Figure 1, the utility model discloses an anti-oxidation device for a glass hot bending mold, which is composed of a glass hot bending forming chamber 1, a pipeline 2, an air pump 3, a gas flow regulating valve 4, and a nitrogen tank 5; Filled with pure nitrogen; the air pump can pump the nitrogen in the nitrogen tank to the inside of the glass hot-bending forming chamber; the gas flow regulating valve can adjust the pumping volume of nitrogen; the mold is a graphite mold 11 with good thermal conductivity; Before the bending forming chamber is put into the graphite mold, the forming chamber should be filled with nitrogen; the nitrogen has an anti-oxidation protection effect on the graphite mold in a closed high-temperature environment.

The utility model using process is as follows:

First put the high-quality flat glass 9 to be formed into the hot-bending graphite mold 11, then open the gas flow regulating valve 4 to fill the glass hot-bending forming chamber 1 with nitrogen gas, and then put the hot-bending graphite mold 11 into the hot-bending forming chamber Forming in 1, during the entire glass high-temperature molding process, the graphite mold is always in an anti-oxidation protection state of nitrogen, and the mold and glass are taken out after the glass is formed.

Claims (3)

1. An anti-oxidation device for a glass hot bending mold, which is composed of a glass hot bending forming room, a nitrogen tank, an air pump, a pipeline, and a gas flow regulating valve; the hot bending forming mold is in the hot bending forming room; the nitrogen tank is filled with pure nitrogen ; The air pump can pump the nitrogen in the nitrogen tank to the inside of the glass hot bending forming chamber; the gas flow regulating valve can adjust the nitrogen pumping volume. 2. The anti-oxidation device of a glass hot bending mold according to claim 1, characterized in that: the mold is a graphite mold. 3. The anti-oxidation device of a glass hot-bending mold according to claim 1, characterized in that: the punch of the mold is matched with the die, and the forming block of the punch is put into the forming groove of the die for extrusion molding .