Glass Vacuum Ring Furnace for Automotive Glass Windshields

1. PURPOSE/DESCRIPTION OF PROCESS

The initial pressure is to exhaust the air between the glass and the intermediate film and seal the surroundings. In order to completely eliminate the bubbles in the laminate and firmly bond with the high pressure, it is necessary to use a large and uniform pressure and a suitable temperature to completely exhaust the gas and make the glass and PVB film completely bonded and transparent.
Finally, a sample is needed to test the strength of the glass, and a 2.2Kg iron ball is dropped from a height of 4m.
If the iron ball cannot penetrate the glass, the glass meets the requirements.

In the process of laminated windshield glass production, after windshield hot bending and PVB laminated process, the air is trapped in between two pieces of glass. It is necessary to evacuate air under a certain temperature until all air bubbles are removed, and meanwhile, windshield edges are sealed with melting and bonding of PVB. This is the Vacuum pre-laminate furnace, vacuum ring furnace, it adopts pre-heat and pre-pressure, to finish the de-airing process.

It's also called a pre-heating and pre-pressing furnace, for uniformly heating automobile glass, includes a main controller and a pre-heating device, and an input display device electrically connected to the main controller. The pre-heating device includes a conveyor belt. The direction is provided with the upper sheet area, the heating channel, the cooling channel and the lower sheet are in sequence. By placing the heating tube in the interlayer cavity of the channel wall, the heating tube is kept away from the automobile glass. The air blower forms a circulating air path so that the hot air is evenly sent to the heating channel, which greatly improves the heating conditions of the automobile glass, thereby effectively improving the quality of the product. In addition, by adding the cooling channel, the film is discharged after air cooling. When the temperature of the car glass surface drops significantly, there is no danger of burns when touched with bare hands, which significantly improves the working conditions.

OPTION:
This De-airing System can disconnect the vacuum ring automatically from the connection of the vacuum of the conveyor.

• In the vacuum pumping system, vacuum pressure can be -0.08 to -0.1bar
• Ensuring vacuum pressure of each part of the whole line will be an over-0.08 bar in the process of running.
• Automatic vacuum valve close
• Automatic silicon hose removal
• Automatic vacuum silicon ring removal
• Automatic silicon ring return

2. APPLICATION

Automotive glass de-airing process for laminated Windshield and sunroof.

Automobile glass vacuum pre-laminate process before the autoclave process for preheating, vacuum pre-pressing process.
 

3. PRODUCTION CAPACITY

The capacity for FZVPL-2000: 16-25s/pc (Customized)

4. DESCRIPTION 

• The major component of the Automotive Glass Windscreen Vacuum Pre-Laminate machine includes
• Curved windshield loading system
• Cold De-airing Section,
• Hot De-airing Section, Heated air circulation drying tunnel is composed of a heating pipe, fan, chamber, supply air duct, and automatic temperature control system.
• Cooling Section, After cooling, the surface temperature of the glass is not higher than 55 ° C.
• Automatic Valve Close, The spring block pushes the ball valve handle to a critical position to cut the vacuum system and glass ring connection.
• Hose Remove System,
• Unloading Section, Conveyor system with vertical glass supports.
• Vacuum System, it's composed of a vacuum pump, air storage tank, long-distance pressure alarm, and others.
• Control System,
• Windshields Inspection After De-airing (OPTIONAL), adopts Canada DALSA line scan camera resolution 8K (8192 pixels), A digital negative pressure gauge and an audible and visual alarm device are installed in the lamination room. If a leak occurs in the vacuum system (vacuum pressure is lower than -0.08Mpa), an alarm is issued to remind the operator to handle it.

4.2 Technical Parameters

• Automatic Glass Loading System (Or manual operation)
• Automotive Glass Washing Machine (Curved Windscreen)
• Cooling Tunnel After Washing (Before windshields PVB lamination)
• Automatic Transfer Conveyor 
• Automotive Glass Laminating Line (2 Glass sheets with PVB)
• PVB Shaping Machine (Automatic stretching and cutting for windshields PVB)
• Automotive Glass De-Airing Line (Laminated glass vacuum ring line)
• Rear Mirror Button Bracket
• Autoclave (We don't manufacture it)

7. OUR SERVICE

7.1 Pre-sale Service

FUZUAN's professional technical team will provide you with an all-around and timely service before making the final decision. It includes,

• Help the customer choose the most suitable glass processing machines, automotive tempered or laminated line machines, according to the target market and production volume requirements.
• Help the customer choose the materials, related to the automotive glass field, such as the raw glass material, mirror button, rubber ring, wiper seat connection, etc.
• Help the customer arrange all the automotive glass processing machines in the workshop.
• Arrange visits to other glass processing companies.

7.2 After-sale Service

FUZUAN will provide you with a complete and systematic after-sale service, which can deliver its technology service quickly to reduce equipment
malfunction possibilities and shorten downtime. It includes:

• On-site installation and training.
• English manual and Video for machine use and maintenance.
• 1-year warranty period (except wearing parts), life-long maintenance.
• Via remote service, faults can be immediately localized and targeted actions initiated.
• 24 hours technical support by email skype or WhatsApp.
• High-quality spare parts increase the lifetime of your machine, secure efficiency, and smooth production. We provide you with a reliable spare parts service. Fast and on-time delivery is our top priority.