Glass machinery mainly refers to industrial machinery and equipment used in glass production and processing. Glass machinery is mainly divided into two categories: glass cold treatment equipment and glass heat treatment equipment. Glass cold treatment equipment mainly includes glass washing machine, glass edging machine, Good glass sanding machine, etc., which treat the glass surface; glass heat treatment equipment mainly includes tempering furnace, hot bending furnace, etc., which treat the internal structure of glass.
Types of glass machinery
Glass machinery mainly includes the following categories: float production line, grid production line, tempering furnace, homogenization furnace, laminating line, hollow line, coating line, screen printing equipment, glass edging machine, glass washing machine, automatic Gourde glass processing Sanding machines, polishing machines, loading tables, cutting machines, drilling machines, engraving machines, etc., among which the most common are glass washing machines and glass edging machines.
1. glass sanding machine
Introduction and function: In daily life, we often see that the surface of some glass is slightly rough, matt, and some have beautiful patterns and patterns. Then the machine that handles this effect is called glass sanding The machine (also called glass sandblasting machine, glass sandblasting machine), the name is different, the function is similar.
The working principle of the glass sanding machine: the blade on the high-speed rotating drum beats the sand flow introduced by the tangent at a speed of 18 m/s, and the sand particles are hit by acceleration to the slowly passing transparent glass surface. The sharp sand particles The glass surface is bumped into microscopic pits, and the glass surface has a frosting effect on the whole. Depending on the hardness and shape of the sand grains, there will be different treatment effects on the glass surface.
2. Glass Edger
Introduction and function: The glass edging machine is mainly suitable for the processing of furniture glass, architectural glass and craft glass. It is one of the earliest and largest cold processing equipment in glass deep processing equipment. Mainly used for grinding and polishing the bottom edge and chamfer of ordinary flat glass. Generally there are manual, digital display control, PLC computer control and other configurations.
The main reasons for glass surface grinding scratches are the quality of the original blank, the process operation, and the condition of the equipment.
3. glass washing machine
Glass is a special equipment for cleaning and drying the glass surface in the pre-processes of deep processing such as mirror making, vacuum coating, tempering, hot bending, and hollow sheeting. The glass washing machine is mainly composed of transmission system, brushing, clean water washing, pure water washing, cold and hot air drying, electric control system, etc. According to user needs, the medium and large glass washing machine is also equipped with manual (pneumatic) glass turning trolley and inspection light source systems.
4. glass drilling machine
Glass drilling machine is a machine specially used for glass drilling. It is mainly divided into: base, operating table, drill bit, motor, etc., with large drilling diameter and large overhanging space on the base, which can drill a variety of sizes of glass Work, the workbench height is low, the operation is convenient, the lower drill adopts air pressure speed regulation, the speed is stable, it is an ideal drilling machine for glass processing enterprises.
· Pay attention to safety during debugging and use, do not touch the moving parts and live parts when the machine is started
· Do not put tools and other objects on the conveyor rail and cover
· In an emergency, immediately press the “emergency stop” button or pull down the air switch;
· Pay attention to the grinding situation at any time: the wear of the grinding wheel should be compensated for in time.
· Keep the water tank with sufficient cooling water and clean water quality at all times to avoid burning the grinding wheel and glass, and clean up the grinding impurities in the water inlet and outlet pipes in time to keep the waterway unblocked
· Before work, check whether all the travel switches work normally and whether the control direction is correct. If they are not correct or the control direction is incorrect, stop the machine immediately for inspection, otherwise the machine will be fatally damaged
5. tempering furnace
glass tempering furnace is an equipment that uses physical or chemical methods to produce tempered glass, including physical glass tempering equipment and chemical glass tempering equipment.
Physically glass tempering equipment uses the technical treatment of heating flat glass and then quenching it to form a compressive stress on the surface of the cooled glass and a tensile stress inside the glass to increase the strength of the glass and turn ordinary annealed glass into tempered glass. . Since this tempering method does not change the chemical composition of the glass, it is called physical glass tempering equipment. If divided according to the characteristics of the heating method of the equipment, the equipment can be divided into forced convection heating tempering equipment and radiant heating tempering equipment; if divided according to the structure and functional characteristics of the equipment, it can be divided into combined tempering equipment and flat tempering equipment , Bent tempered glass equipment, continuous tempering equipment, two-way tempering equipment, hanging furnace, etc.
Chemical tempering equipment is to improve the strength of glass by changing the chemical composition of the glass surface. At present, there are methods such as surface dealkalization and alkali metal ion exchange; because this tempering method changes the chemical composition of the glass, it is called chemical glass tempering equipment .
Before 2014, most companies adopted physical methods.
6. Hot bending furnace
Hot-bent glass is classified from the shape, and can be divided into three categories: single bending, bending and compound bending.
For a single-curved architectural glass, glass bending is relatively easy. However, many manufacturers often do not fit well with the mold at the curved edge approximately 150mm away from the straight edge of the product, and some of them exceed the standard requirements, causing installation difficulties. To solve this problem, first of all, the electric heating arrangement of the hot bending furnace is required to be reasonable, to be able to realize local heating, and the product placement direction must be consistent with the direction of the electric heating wire.
Bending hot-bending glass commonly includes aquarium glass and counter glass. The biggest technical difficulty of bending glass is that the straight edges are bent and the corners are prone to mold marks and other defects. Therefore, curved glass is also very common, such as spherical glass, curved profile, glass wash basin, etc. This kind of glass requires a high level of technology in the bending operation, and the production of precise molds, and some require professional heat The bending furnace can be completed.
Hot-bent glass is curved glass that is made of high-quality glass heated and bent to soften, formed in a mold, and then annealed to meet the high-quality requirements of modern architecture. Beautiful style and smooth lines. It breaks through the singularity of flat glass and is more flexible and diverse in use. It is suitable for special requirements of different shapes such as doors, windows, ceilings, curtain walls, etc.
Generally speaking, my country’s hot-bending glass technology is still relatively backward, and the hot-bending of some specific glass often fails to meet user requirements. For example, the hot bending of oversized and deep arc glass has a lower yield. From a mechanical point of view, the force is concentrated from both sides to the middle during the hot bending of glass. When the force exceeds the allowable stress of the glass, the glass plate bursts. Therefore, when the glass is hot-bent, an auxiliary external force support can be added to solve this problem well.
The development of glass machinery
The development of China’s glass machinery industry began in the early 1990s. The migration of foreign-funded (Taiwan-funded) companies began to take root in China. With the geographical transfer of world processing plants and the rapid development of related industries in China, glass machinery processing The industry began to develop rapidly in China. The early glass machinery manufacturers were represented by Shenzhen Yiweigao Industrial Development Co., Ltd., and then there was a differentiation, becoming several leading enterprises in Guangdong Shunde and Shenzhen. In the later development, it gradually expanded into two large areas dominated by the Pearl River Delta and the Yangtze River Delta.
The current situation of glass machinery
By the beginning of the 20th century, there was a trend following the emergence of glass processing companies. There have been relatively concentrated industrial areas such as Foshan, Shenzhen, Guangzhou, Shanghai, Hangzhou, Suzhou, and Zhangjiagang. Its development area has expanded to the Shandong Peninsula to the Bohai Rim, and spread to many cities in the mainland. At present, more than 50% of my country’s glass cold processing equipment is manufactured in Shunde, Guangdong.
Until 2014, the development of my country’s glass machinery is highly dependent on the international market.
The good development prospects of the glass fine processing industry will enable China’s glass edging machine industry to maintain a rapid development trend. It is estimated that from 2011 to 2013, the annual growth rate of the demand for laminated safety glass for automobiles and construction in the Chinese market is about 30%. This means that the glass machinery industry has huge development potential and endurance in China.
Architectural and automotive glass and glass products, as substrates, play an increasingly important role in the development of diversification, bringing opportunities and challenges to glass production and processing equipment. In 2014, flexible production technology and multi-functional production equipment are the development trend of the world glass processing industry. They require glass processing equipment to be highly repeatable and precise. Automotive and architectural glass have been committed to reducing the thickness of glass to meet market needs, which puts forward higher requirements for glass deep processing technology. Many glass deep processing companies have begun to improve the efficiency of their production lines and integrate all aspects of glass deep processing. This will become the development trend of the glass deep processing industry in the future.
Post time: Dec-14-2021