CN207685130U - A kind of curve glass forming apparatus - Google Patents

Abstract

The utility model discloses a curved glass forming device, which comprises a heating furnace and a material pushing device that pushes the queue of glass forming molds to advance according to the beat. The pushing device described above is installed at the entrance of the glass forming mold queue channel of the heating furnace. The utility model can adopt the flowing water production mode to form the curved glass, and the production efficiency is high.

Description

A curved glass forming device

technical field

The utility model relates to curved glass molding, in particular to a curved glass molding device.

Background technique

Curved glass forming device is a device for processing flat glass into curved glass. The utility model with the patent number CN201520580711.0 discloses a curved glass forming device, which includes a heater, a vacuum generator, a glass lifting mechanism, a mold base and a ventilating template, the ventilating template is set on the mold base, and the vacuum generator is set on the At the bottom of the mold base, the glass lifting mechanism is symmetrically arranged on both sides of the mold base, and the heater is arranged above the molding surface.

This utility model puts the uncut large glass on the mold to be formed, and the edge material used for the lifting of the glass lifting mechanism needs to be cut off after forming, which is time-consuming, labor-intensive and material-intensive; the heater is used to directly heat the glass, so The glass is transparent, and the heating efficiency is low, resulting in low production efficiency; the template, the mold base and the vacuum generator are connected together, and the production efficiency is low; the heating and sealing are not good, and the lifting mechanism will heat up, and it will be exposed to high temperature for a long time It is easy to be damaged, and the service life of the lifting mechanism is low.

Contents of the invention

The technical problem to be solved by the utility model is to provide a curved glass forming device with high production efficiency.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is a curved glass forming device, which includes a heating furnace and a pushing device that pushes the queue of glass forming molds to advance according to the beat. The heating furnace is a tunnel type heating furnace, including glass The channel and heating device of the forming mold queue, the pushing device is installed at the entrance of the channel of the glass forming mold queue in the heating furnace.

In the above-mentioned curved glass forming device, the channel sequentially includes a feeding and heating zone, a heating and softening zone, a heat absorption forming zone and a cooling and cooling zone according to the traveling direction of the glass forming mold queue.

In the curved glass forming device described above, the channel is a groove-shaped slideway, and the groove-shaped slideway includes a bottom plate and two guided side plates; the bottom plate includes a vacuum suction port, and the vacuum suction port is located in the heat suction forming area; The opening is located on the top surface of the bottom plate, and the lower part of the vacuum suction port communicates with an external vacuum source.

The above-mentioned curved glass forming device, the heating device includes an upper heating device and a lower heating device, the upper heating device is arranged above the channel to heat the upper mold of the glass forming mold; the lower heating device is arranged at the top of the channel Below, the lower mold of the glass forming mold is heated through the grooved slideway.

The curved-surface glass forming device of the utility model can form the curved-surface glass by adopting the flowing water production mode, and the production efficiency is high.

Description of drawings

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

Fig. 1 is a cross-sectional view of a curved glass forming device according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view along the line A in Fig. 1 .

Fig. 3 is a cross-sectional view along B direction in Fig. 1 .

Fig. 4 is a sectional view along the direction C in Fig. 1 .

Detailed ways

The structure of the curved glass forming device of the embodiment of the utility model is shown in Figures 1 to 4. The curved glass forming device includes a tunnel-type heating furnace 8, a pneumatic piston type pushing device 11 and a plurality of air-permeable curved glass forming molds 15.

The tunnel type heating furnace 8 includes a mold channel 2 and a heating device of a trough slide type.

The air-permeable curved glass forming mold 15 includes a negative pressure lower mold 1 , an upper mold 3 and four guide pillars 101 . The negative pressure lower die 1 is a die, with a cavity 102 on the top and a negative pressure cavity 103 with a lower opening at the bottom.

Upper die 3 is a convex die, and guide post 101 is vertically fixed on the top surface of negative pressure lower die 1, and is arranged on the four corners of the negative pressure lower die top along the periphery of cavity 102. The upper die 3 has four guide holes 301. When the upper die 3 is buckled above the negative pressure lower die 1, the guide post 101 is inserted into the guide holes 301 of the upper die 3, and the two are slidably matched.

The negative pressure lower die 1 and upper die 3 are made of porous, high temperature resistant, high thermal conductivity materials, such as porous graphite (or silicon carbide ceramics).

The mold passage 2 of the tunnel heating furnace 8 includes a feeding and heating zone, a heating and softening zone, a heat absorption forming zone and a cooling and cooling zone in sequence according to the traveling direction of the mold 15 . The working temperature of the feeding and heating zone is 200°C-500°C, the working temperature of the heating and softening zone is 500°C-1000°C, the working temperature of the heat absorption forming zone is 700°C-1100°C, and the working temperature of the cooling and cooling zone is 100°C -500°C.

The negative pressure lower mold 1 of the glass forming mold 15 is placed in the grooved slideway of the mold passage 2, and the grooved slideway includes a base plate and two side plates guiding the glass forming mold. There is a vacuum suction port 201 on the bottom plate of the grooved slideway of the mold passage 2, the opening at the upper end of the vacuum suction port 201 is located on the top surface of the bottom plate, and the bottom of the vacuum suction port 201 is externally connected to a vacuum source. In the heat absorption forming area, the opening below the bottom of the negative pressure cavity 103 of the glass forming mold 15 negative pressure lower mold 1 is located above the vacuum suction port 201 of the grooved slideway of the mold channel 2 and communicates with the vacuum suction port 201.

The pneumatic piston pusher 11 is arranged at the entrance of the mold passage 2 on the left side of the tunnel heating furnace 8, and pushes the queue of glass forming molds 15 to travel along the mold passage 2 from the entrance to the exit in a rhythmic manner.

The heating device includes an upper heating device 9 and a lower heating device 10 , and the upper heating device 9 is arranged above the mold passage 2 to heat the upper die 3 of the glass forming mold 15 . The lower heating device 10 is arranged below the mold passage 2, and heats the groove slide of the mold passage 2 and the negative pressure lower mold 1 of the glass forming mold 15.

The production of curved glass forming device includes the following working steps:

1) Put the cut glass blank 20 into the cavity 102 of the negative pressure lower mold 1, place the upper die 3 above the glass blank 20, and complete the combination of a glass forming mold 15.

2) At each beat, put a combined glass forming mold 15 into the entrance of the mold passage 2, and the pushing device 11 pushes the glass forming mold 15 into the feeding and heating zone, and the glass forming mold 15 that enters later will first The entering glass forming mold 15 advances the position of one mold 15 toward the exit direction, forming a mold queue. In the feeding and heating zone, the heated negative pressure lower mold 1 contacts and transfers heat to the edge of the glass blank 20, and radiates heat to the middle of the glass blank 20, and the upper die 3 contacts and transfers heat to the middle of the glass blank 20, and the glass blank 20 temperature increase.

3) In the next beat, the glass forming mold 15 is pushed into the heating and softening zone. In the heating and softening zone, the glass blank 20 is softened due to the further increase in temperature, and it collapses under the action of its own weight and the pressure of the upper die 3, and the glass The edge of the blank 20 fits the edge of the cavity 102 of the negative pressure lower mold 1, and the upper die 3 closes the cavity 102 of the negative pressure lower mold 1 due to the gravity drop.

4) In the next beat, the glass forming mold 15 is pushed into the heat absorption forming area, and in the heat absorption forming area, the opening below the bottom of the negative pressure lower mold 1 negative pressure chamber 103 of the glass forming mold 15 is located on the grooved slideway of the mold channel 2 Above the vacuum suction port 201, the two are connected. The vacuum suction entering the negative pressure chamber 103 is introduced into the cavity 102 of the negative pressure lower mold 1 through the micropores of the negative pressure lower mold 1, and under the action of the vacuum suction in the cavity 102, the glass blank 20 and the negative pressure lower mold The mold cavity 102 of 1 is closely fitted and formed, and at this time, the glass blank 20 is out of contact with the upper die 3 .

5) In the next beat, the glass forming mold 15 is pushed into the cooling zone, and in the cooling zone, the glass blank 20 in the glass forming mold 15 is cooled and shaped.

The above embodiments of the utility model make use of the porous and heat-conducting properties of graphite to create airtightness between the lower mold and the glass in the cavity. When the negative pressure is generated under the mold and the air is discharged, the softened glass is closely attached to the cavity of the lower mold, and the upper The mold limits the deformation range of the glass to achieve the purpose of glass forming.

The above embodiments of the utility model have the following beneficial effects:

The structure of the lower mold and the upper mold is directly formed into the final product, such as the curved glass panel of the mobile phone, with high production efficiency, no waste edge of the glass blank, and high material utilization rate;

The lower mold and upper mold are heated in the form of heater heat radiation. The lower mold and upper mold are made of graphite material, which has a good heat absorption effect; the lower mold and upper mold are in contact with heated glass, so the heating efficiency is high;

The molds are pushed into the heating furnace one by one in the way of pushing, and then enter the heating zone, softening zone, forming zone, and then enter the cooling zone. The vacuum generator only passes through the vacuum suction port on the mold channel, and the glass blanks can be formed one by one. , continuous production on the assembly line, high efficiency of heating and molding;

The molds are pushed into the heating furnace one by one in the way of propulsion. The heating furnace is box-shaped, with only one inlet and one outlet. The sealing is good, and the propulsion mechanism will not directly contact the hot air, and will not affect the service life of the propulsion mechanism;

The curved glass is cooled and annealed in the mold, and the function of vacuum adsorption is used to make the glass still closely fit the mold during annealing. The shape of the curved glass will not change during the cooling process, and the yield is high.

Claims (4)

1. a kind of curve glass forming apparatus, including heating furnace, heating furnace includes heating device, which is characterized in that including pushing The material-pulling device that beat is advanced is pressed in the queue of glass-forming die, and heating furnace is tunnel heating, including glass-forming die The channel of queue, the material-pulling device are mounted on the inlet in heating furnace glass-forming die queue channel.

2. curve glass forming apparatus according to claim 1, which is characterized in that press glass-forming die in the channel The direction of travel of queue includes feeding heating region, heating and softening area, heat suction shaping area and the area that cools successively.

3. curve glass forming apparatus according to claim 2, which is characterized in that the channel is flute profile slideway, slot Shape slideway includes the side plate of bottom plate and two guiding；Bottom plate includes suction mouth, and suction mouth is located at heat and inhales shaping area；Vacuum is inhaled The opening of mouth upper end is connected to positioned at the top surface of bottom plate, the lower part of suction mouth with external vacuum source.

4. curve glass forming apparatus according to claim 3, which is characterized in that heating device include upper heating device and Lower heating device, upper heating device are arranged in the top in the channel, are heated to the upper mold of glass-forming die；Lower heating Device is arranged in the lower section in the channel, is heated to the lower die of glass-forming die by flute profile slideway.