CN2808901Y - Special furnace for tempering of glass and sintering of print electrode on surface of glass - Google Patents

Abstract

The utility model relates to a special furnace for glass tempering and surface printing electrode sintering, which comprises a feeding area, a drying area, a preheating area, a sintering and tempering area, a rapid cooling area and a material discharging area. There is a hot air device on the top of the furnace in the preheating zone and the sintering and tempering zone, a heat collector on the bottom of the furnace, and an air grid in the quenching zone, and the glass workpiece is conveyed by the conveyor roller. This special furnace performs glass tempering processing while sintering electrodes on the surface of ordinary glass. The tempered glass produced by this equipment has excellent performance, high bonding strength between glass surface electrodes and substrates, and good tensile performance, which meets the needs of solar cell module production. requirements, greatly reducing production costs.

Description

Special furnace for glass tempering and surface printing electrode sintering

technical field

The utility model relates to a sintering furnace, in particular to a special furnace for glass tempering and surface printed electrode sintering, which is an improvement to the traditional printed electrode sintering furnace and belongs to the technical field of environmental protection and energy saving.

Background technique

The sintering of electronic materials and electrodes and the sintering of ordinary glass electrodes generally require the use of electronic material sintering and glass tempering furnaces respectively. Electronic material sintering furnace is an industrial furnace that sinters silver paste or other metal paste through a specific heat treatment process to make it sintered. It is generally divided into drying, coking, sintering and other processes; Specific tempering processing makes it a process equipment for tempered glass. Ordinary glass is processed by quenching method or air-cooling quenching method. It has the characteristics of high impact strength, high bending strength and good thermal stability. The fragments are scattered when broken. Fine granular, no sharp edges and corners. The above two industrial furnaces are specially designed for metal paste sintering and glass tempering, and are not suitable for simultaneous sintering and tempering of ordinary glass and surface electrodes. Sintering electrodes on the surface of ordinary glass and tempering the glass at the same time is one of the key processes in the production of solar cell modules. The implementation of this method can significantly save the investment in materials and production equipment and reduce production costs.

Contents of the invention

The purpose of this utility model is to provide a special furnace for glass tempering and its surface printed electrode sintering, which is a special industrial furnace for glass tempering treatment while printing and sintering electrodes on the surface of ordinary glass. The performance index of tempered glass made by this equipment complies with the GB standard, the bonding strength between the surface electrode and the substrate is high, and the tensile performance is good, which meets the requirements of solar cell module production and greatly reduces the production cost.

The utility model comprises a furnace frame, a furnace body, a furnace chamber, a heating element and a transmission roller table. A feeding area, a drying area, a preheating area, a sintering and tempering area, a quenching area and a discharging area are sequentially arranged on the furnace frame. Both the feeding area and the discharging area are equipped with transmission rollers driven by motors, hot air devices are installed on the top of the furnace in the preheating area and sintering and tempering area, heat collectors are installed at the bottom of the furnace, and heat collectors are installed on the top and bottom of the furnace in the quenching area. All have air grilles.

The feeding area is composed of a transmission roller table, a motor and a transmission chain, and the motor installed on the furnace frame drives the transmission roller table to run through the transmission chain; the drying area is composed of a furnace, a heating element and a transmission roller table, and the heating element is placed On the top of the furnace, the transmission roller table is placed in the center of the furnace, and the glass workpiece is placed flat on the roller table; the preheating zone is composed of the furnace, heating elements, transmission roller table and hot air device. The hot air device is located on the top of the furnace. There are holes for hot air flow in the heating element; the sintering and tempering zone is composed of a furnace, a heating element, a transfer roller table, a hot air device and a heat collector. There is an air outlet at the bottom; the quenching zone is composed of air grids, blowers, and conveying rollers, and the air grids are respectively placed at the upper and lower parts of the furnace.

The utility model works like this: firstly, the ordinary glass workpiece printed with metal slurry on the surface is sent to the sintering and tempering furnace through the conveying roller table, and the workpiece is dried in the drying area, and the binder of the slurry is discharged and then enters the preheating process. In the preheating zone, forced convection is used to uniformly heat the glass from the upper and lower sides. After preheating, the glass workpiece enters the high-temperature sintering and tempering zone, where the metal paste is sintered and the glass is heated and softened; in the subsequent rapid cooling and quenching, the composition and structure of the glass undergo changes, and the tempering process is completed. At the same time, the metal paste The solidified material is tightly combined with the glass surface.

The utility model has the advantages: compared with the ordinary material sintering furnace and the glass tempering furnace, the utility model integrates all the functions of the above two, that is, the glass tempering process is carried out while the material is sintering, which greatly reduces the production cost of the manufacturer. The production cost is reduced, the production process is simplified, and the production efficiency is improved.

Description of drawings

Fig. 1 is the schematic diagram of the furnace body structure of the utility model.

Fig. 2 is a schematic diagram of the structure of the drying zone of the utility model.

Fig. 3 is a structural schematic diagram of the preheating zone of the present invention.

Fig. 4 is a schematic diagram of the structure of the sintering and tempering zone of the utility model.

Fig. 5 is a structural schematic diagram of the quenching zone of the utility model.

Detailed ways

In the figure: 1. Feeding area, 2. Drying area, 3. Preheating area, 4. Sintering and tempering area, 5. Rapid cooling area, 6. Discharging area, 7. Motor, 8. Transmission chain, 9. Furnace Body, 10, furnace frame, 11, furnace, 12, transmission roller table, 13, heating element, 14, hot air device, 15, air outlet, 16, heat collector, 17, air grid, 18, glass workpiece, 19, air outlet.

In FIG. 1 , a feeding area 1 , a drying area 2 , a preheating area 3 , a sintering and tempering area 4 , a quenching area 5 , and a material discharging area 6 are sequentially arranged on the grate 10 . The feeding area is composed of transmission roller table, the power of motor 7 is transmitted to the roller table through the transmission chain 8, and the workpiece is driven to move by the friction between the roller table and the glass surface. The structure of the drying zone is shown in Figure 2. It consists of a furnace 11, a conveying roller table 12, and a heating element 13. The function of the drying zone is to heat the printed materials on the surface of the workpiece 18 and remove the solvent therein. The structure of the preheating zone is shown in Figure 3. It consists of a furnace 11, a conveying roller table 12, a heating element 13, and a hot air device 14. The air outlet 15 of the hot air device forms a top-down airflow. The disturbance of the airflow makes the upper and lower surfaces of the glass evenly heated; When the temperature reaches above 300°C, a series of physical and chemical changes will occur in the slurry, and the coke will be discharged outward. The structure of the sintering and tempering zone is shown in Figure 4. It consists of a furnace 11, a transmission roller table 12, a heating element 13, a hot air device 14, and a heat collector 16. The high-temperature air flow forms convection in the furnace, so that the glass workpiece 18 is heated evenly; The heat collected by the heat collector 16 is used to preheat the compressed air supplemented into the furnace through the waste heat outlet 19, so as to achieve the purpose of energy saving and uniform convection. The structure of the quenching zone is shown in Figure 5. It is composed of upper and lower air grids 17, blowers, and conveying rollers 12. Adjust the opening of the gate valve of the air grids to adjust the wind pressure of the air grids to achieve air-cooling and quenching treatment of high-temperature glass. The structure of the discharge area is the same as that of the loading area.

The whole machine is controlled by industrial computer, and various glass tempering process parameters are stored in the computer in the form of programs; intelligent optimization heating control technology is adopted to adjust the tempering process according to the shape of the glass.

Claims (6)

1, the special-purpose stove of a kind of glass tempering and surface printing electrode sintering thereof, comprise grate, body of heater, burner hearth, heating unit and transport roller way, on grate, set gradually feeding area, baking zone, preheating zone, sintering tempering district, quench zone and discharge zone, it is characterized in that:

A. (3) roof of the furnace is provided with hot air apparatus (14) in the preheating zone;

B. be provided with hot air apparatus (14) at sintering tempering district (4) roof of the furnace, be provided with heat collection device (16) at burner hearth bottom;

C. be equipped with air grid (17) at quench zone (5) roof of the furnace and bottom;

D., the biography that is driven by motor (7) all is set in feeding area (1) and discharge zone (6)

Defeated roller-way (12).

2, the special-purpose stove of a kind of glass tempering according to claim 1 and surface printing electrode sintering thereof, it is characterized in that feeding area (1) is made up of transport roller way (12), motor (7) and transmission chain (8), motor (7) is installed on the grate, and motor (7) drives transport roller way (12) running by transmission chain.

3, the special-purpose stove of a kind of glass tempering according to claim 1 and surface printing electrode sintering thereof, it is characterized in that baking zone (2) is made up of burner hearth (11), heating unit (13) and transport roller way (12), heating unit places roof of the furnace, transport roller way places the burner hearth middle position, and glass pieces (18) lies on the roller-way (12).

4, the special-purpose stove of a kind of glass tempering according to claim 1 and surface printing electrode sintering thereof, it is characterized in that preheating zone (3) is made up of burner hearth (11), heating unit (13), transport roller way (12) and hot air apparatus (14), hot air apparatus (14) is located at burner hearth (11) top, is located in the heating unit (13) on burner hearth (11) top and has hot wind supply mobile air outlet (15).

5, the special-purpose stove of a kind of glass tempering according to claim 1 and surface printing electrode sintering thereof, it is characterized in that sintering tempering district (4) is made up of burner hearth (11), heating unit (13), transport roller way (12), hot air apparatus (14) and heat collection device (16), hot air apparatus (14) is installed on burner hearth (11) top, heat collection device (16) places the bottom of burner hearth (11), has air outlet (19) in heat collection device (16) bottom.

6, the special-purpose stove of a kind of glass tempering according to claim 1 and surface printing electrode sintering thereof is characterized in that being located at the position, upper and lower that air grid (17) in the quench zone (5) places burner hearth (11) respectively.

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