Freezer (refrigerator) Glass Tempering Furnace Machine Freezer Glass Making Machine

• Customization: Available
• Control System: PLC Control
• Glass Thickness Range: 4 mm - 25 mm
• Heating Method: Conduction Heating, Convection Heating, Radiant Heating
• Maximum Glass Size: 6000 mm x 12000 mm
• Warranty: 12-24 Months
• Ceramic Roller: Vesuvius, or Chinese Top Brand
• Big Blower: North Glass
• Convection Fan: North Glass
• Blower Inverter: Schneider or Siemens
• Small Inverters: Siemens
• Contactors: Siemens or Schneider
• PLC: Siemens
• Industrial Control Computer: Siemens
• Touch Screen: Available
• Thermocouple: 5mm
• Heating Technology: Force Convection Available
• Bent Tempered: Available
• Automatic Forming: Yes
• with Mould: Depends
• Machine Size: Customized
• Transport Package: Container
• Specification: as customized
• Trademark: Lever
• Origin: China
• HS Code: 84752919
• Production Capacity: 100 Sets Per Year

Product Description

Shaped bent glass tempering furnace with rigid/soft shaft rollers is a special plant used to produce the bent tempered glass and thermal strengthened glass with special shape, such as L shape, U shape, V shape, etc. This tempered glass mainly is used in the fields of refrigerator glass mainly.
We have most advanced technology for this kind of glass tempering furnace in China.

1. Machine Application
LV-TBJ2012 shaped bent glass tempering furnace is a special plant used to produce the bent tempered glass and thermal strengthened glass
The tempered glass could be used for:
Freezer (refrigerator) tempered glass
Showcase tempered glass
Refrigerator tempered glass
Food cabinet tempered glass
U shape tempered glass
L shape tempered glass
V shape tempered glass



1. Supply Scope:
1.1. Loading/unloading section 
1.2. Heating section (Vesuvius ceramic roller; force convection system at top oven, as optional)
1.3. Flat tempering section
1.4. Bent tempering section (we have best technology)
1.5. Unloading/loading section
1.6. Blower system (Schneider or Siemens Blower Inverter)
1.7. Electrical & control system (with Siemens PLC)
1.8. Spare parts as listed in appendix
1.9. Technical documents
 

Name	J shape Bent Tempered Glass -(20C)-
Max. Glass Size (Or Loading Area)	⌒2000 x 1200mm (could be customized)
Min. Glass Size	⌒400 x 300mm
Glass Thickness	3.2-8mm
Min. Radius	R>=200mm
Heating technology	Radiation
Blower Quantity & Power	200 KW X 2 sets (Controlled by frequency one inverter)
Finished product rate	≥98%

3.3. Installation Power & Transformer Capacity

Name	Power (KW)	Remark
Heating Power	400 KW
Quenching Power	200 KW x 2set
Others	20 kw
Total	820 kw	The actual running power is about 70-80%

  4. Suitable For Glass Type (Glass Can Be Tempered)
4.1. Clear & ultra-clear float glass
4.2. Reflective glass
4.3. Online Low-E glass (E≥0.1; Low-E film should be resistant to more than 700ºC)
4.4. Patterned glass (not for all patterns)
4.5. Body-tinted glass
4.6. Silk screen printed glass (The printing ink should be temperable and resistant to more than 700ºC)

5. Machine Main Features:
5.1. Huge piece and higher volume-weight of insulating material
5.2. Energy saving control for blower
5.3. One step forming for cold plate of flat quench
5.4. Upper quench of flat tempering furnace could be lifted independently
5.5. Heating section has a helix matrix structure, which can control the temperature of each area independently. Reasonable design and unique structure of heating elements make a long serve life.
5.6. The heating oven body is full closed and the Insulating materials are of high quality material with top performance which can ensure the power consumption to a minimum and the furnace temperature should be safeguarded uniform.
5.7. Fault diagnosis system for the heating elements.
5.8. We use only two connecting communication between the thermocouples and computer, which will avoid the interruption and make the temperature-mearsuring more exact.
5.9. The working condition of every thermocouple could be monitored automatically, and the warning will come out if there is any abnormal situation.
5.10. Adopting PID for temperature control, which has the better anti-interference function and higher temperature-control precision.
5.11. Equal three phase power consumption during automatic heating up period; avoiding phase no-equal during no-heating period automatically.
5.12. The fine-adjustment for oven temperature could be achieved by fine-adjusting the temperature of every heating element.
5.13. During the night, the furnace can stay at sleep mode around 500-550 degrees celcius and preheating takes place before the start of the shift in the morning so that the furnace is ready for production
5.14. The production process, temperature, time, air pressure, etc could be recorded. Therefore, testing production could be saved and production stability could be improved. Also, the production state in different batches could be tracked.
5.15. The machine has the history record and printing function. When glass come out from the oven, the computer will record the control parameters automatically for reference in future or pint them out.
5.16. Powerful operation prompt facility; if there is any wrong operation or fault, the dialog box will be called out to give you help.  
5.17. Preventive function for the wrong operation. The data which affects the system running has been restricted strictly. The different operator has the different access right to system setting.
5.18. Power monitoring function, the monitoring program could monitor most of the sensors.
5.19. Synchronous and asynchronous running of each section, reciprocating running of heating section and quenching section.
5.20. The operation is simple as the operator only needs to input the parameters into the computer.
5.21. The system is highly automated, manpower is only needed for loading and unloading glass at both ends.

6. Brief Introduction of Main Sections
6.1. Loading table
6.1.1. Size: pls see the attached layout
6.1.2. Roller diameter and quantity: as final design
6.1.3. Roller distance: as final design
6.1.4. Positioning device to guarantee the right position according to glass shape
6.1.5. Material of roller: there are two kinds of roller, one is the rubber coated roller; one is the steel roller with kevlar rope which near to the oven door.
6.1.6. The first roller is free of operation, which is easy for loading the glass
6.1.7. Side rubber-coated rollers are used for loading the glass of large size
6.1.8. Equipped with elevating table with castors, using cylinder up and down mechanical system to lift and lower down the four angles of the loading table at the same time.
6.1.9. During loading, the photoelectric sensor will measure and record the length of the glass entering the furnace.
6.1.10. Driving system with the frequency inverters.
6.1.11. The range of running velocity adjusting: 100-600mm/s
6.1.12. The foot switch is easy to operate

6.2. Cooling section (08L) for sidelite
6.2.1. Size: pls see the attached layout
6.2.2. Materials: aluminum-alloy wheel with kevlar rope
6.2.3. Cooling fan quantity: as final design
6.2.4. This section is for further cooling the glass which come from the bending forming section (09L) to cool the glass completely for easy unloading.

6.3. Bending forming section (08L) for sidelite
6.3.1. Size: pls see the attached layout
6.3.2. Bending type: crosswise (rigid shaft type)
6.3.3. Without any mould. The forming method is automatic quench transmutation.
6.3.4. Materials: aluminum-alloy wheel with fiber rope
6.3.5. As separated structure, the cooling quench for bent tempering are fixed among the rollers and made actions for deformation accordingly. The cooling air is blown in from the grid back through heat resistant soft hose.
6.3.6. The process for glass curvature forming is controlled by computer. You can input the needed radius data to computer, then required glass will be produced accordingly. But some time, for the new radius, you should make some mini-adjustment manually at the first time.
6.3.7. Fixed length swinging and reciprocating swinging during the whole process
6.3.8. There is sensor for glass length measuring.
6.3.9. It is very easy to change the glass with different thickness or radius.

6.4. Heating section (Furnace)
6.4.1. Size: pls see the attached layout
6.4.2. Roller distance: as final design
6.4.3. Ceramic roller quantity: as final design
6.4.4. Heating elements quantity: as final design
6.4.5. Equipped with compressed air jet system, which could ensure the much more homogeneous temperature, good quality, and suitable for more kinds of glass heating.
6.4.6. Double-layer box type covered with high quality insulating materials. The upper furnace can freely move up and down by the roof lifting mechanism for easy maintenance.
6.4.7. The upper and lower parts of the furnace are heated independently in each heating zone. Each heating zone has its thermocouple forming an independent control loop.
6.4.8. Advanced matrix "talent control" process is unique and special designed for temperature control system, which ensure the precision and even/balance of temperature control to best state and situation.
6.4.9. The ceramic rollers system is driven by round belt. Each ceramic roller is separately moved by individual belt, but all the belts are conveyed by same one set of transmission system, which can ensure simultaneous and stable running, and avoid the scratch and destroy of glass when above the rollers.
6.4.10.The emergency cooling system on top of the furnace is used to cool down the oven quickly by the control button in operation panel when necessary, such as some failure occurs in heating oven, or maintains state.

6.5. Forming section with mould(s) for backlite (08V)
6.5.1 Supply scope
6.5.1.1. Glass conveying system
6.5.1.2. Glass support mould & pressing mould (if need)
6.5.1.3. Heating & insulating system, which could keep temperature of the forming section so that the glass is formed in high temperature.
6.5.1.4. Forming chamber
6.5.1.5. Glass mould and pressing mould are drive by Servo System which can insure accuracy and stability.
6.5.2. Working process
After the heated glasses are conveyed to forming section, the glass mould which is waiting under the glass conveying system goes up and takes the glass onto the mould to form. For the glass of deep curvature, glass mould and press mould (one pair of mould) work together to form the glass; for the glass of shallow curvature, it is formed on the mould by gravity only. After the glass has been formed it is transferred to quenching section.

6.6. Quenching section for backlite (08V)
6.6.1. Supply scope
6.6.1.1. the upper & lower quench, quenching system
6.6.1.2. Mould carrier
6.6.1.3. Mould conveying device
6.6.1.4. Servo motors
6.6.1.5. Conveyor rollers
6.6.2. Working process
The mould conveying device drives the glass mould with formed glass to this section, the glass is tempered here. Then it is conveyed to transmission section.
The conveying device, which is driven by Servo System, has liner rail that insure smooth and accurate movement. The conveying device will take the formed glass to this section. Then the lifting roller will lift the glass. then the conveying device go to the quenching section to take another formed glass, then the rollers will put the glass down to rollers and the rollers will send the glass to next section: Cooling section

6.7 Cooling section for backlite (08L)
Unloading section is composed of conveying roller and cooling device and etc.. Conveying rollers conveys the tempered glass out to cooling section for further cooling. Then the glass is conveyed to the  end of unloading section and stop automatically. Operators unload the glass.

6.8. Unloading table
The structure is same as the loading table. When the glass is transported to the end of conveyor, the rollers will stop automatically, and the glass could be taken away by hand.

6.9. Blower system
6.9.1. Blower quantity: 3 sets
6.9.2. Blower power: 280 kw x 1+ 200kw x2
6.9.3. Blower brand: Taixin, Taiwan-North brand
6.9.4. Blower motor brand: Siemens
6.9.5. Blower control cabinet
6.9.6. Air collector, air ducts, etc.
6.9.7. Blower room (supplied by the buyer), to be confirmed by the seller.
6.9.8. The air volume in the upper quench and lower quench can be adjusted according to the production need, making the quality of tempered glass optimum.
6.9.9. With the inverter, the blower can work in different speed according to the technical requirements.

6.10. Control system
Supplied by the seller, but the buyer should provide the control room with the necessary air conditioners inside.
6.10.1. PLC: Simens.
6.10.2. Industrial computer: Simens.
6.10.3. UPS system which could provide the power for the computer system when the main power shut off suddenly to avoid any loose of data.
6.10.4. Most the process parameters can be saved and called freely. When produce the required glass , at first time, the system will automatically save the data that have been set. If you want to make the same glass next time, all the related parameter can be called.
6.10.5. Controller for roller driving system, heating system, quenching system, cooling system.
6.10.6. The abnormity alarming system would warn while trouble happens to indicate how to solve the trouble.
6.10.7. The furnace has auto-heating function. After the shift of one day, the furnace would be in the standby mode. While the ceramic rollers are still running, and ahead of working time on the next morning, the system will start up to heat up to working temperature until the operator begins the production.

 
3.Special Technical Features:
3.1. Ceramic plates installed at the top of oven, which could ensure more even heating, avoid dregs falling
3.2. Ceramic rollers system driven by double/triple belts, which can ensure better simultaneous and stable running, and avoid the scratch and destroy of glass when above the rollers. It would not affect the running when any one of belt damaged.

3. Same top quality insulating materials for whole heating oven
4. Heating elements use the gapless design (parallelogram shape), which could make the heating more even. This could improve the finished product rate and better product quality.for force convection type, no need this design.
And unequal interval of ceramic roller design

5. Using ceramic support for heating elements, which could avoid earth to avoid heater trouble
6. Upper and lower quenching could be moved separately, which is convenient to adjust the flatness of glass.
7. Quenching use whole overall folding.
8. More air in-let in quenching section, which guarantee more homogeneous air blowing.

9. Upper cover of quenching section could be lifted up and down vertically through cylinder,  which save place and easy for checking.
10. Glass position could be displayed onto the main interface
11. Intelligent design for glass coming-out from the quenching section, which could avoid crash in unloading section, and avoid that glass could not come out from heating oven.
12. Lifting frame could come down automatically which could avoid crash with the glass coming from quenching section.

4.Powerful control system

Siemens PLC

Siemens contactors
Siemens inverters
Siemens industrial control computer
Original Taiwan ICP CON Modules

Popular Machine model also customized available.
 

Model	Flat Tempered Glass (mm)
	Max. Size (mm)	Min. Size (mm)	Thickness (mm)	Capacity 5mm (Loads/Hour)
LV-TF0812	800x1200	100x150	3-19	15-16
LV-TF1225	1200X2500	100x250	3-19	15-16
LV-TF1525	1500X2500	100x250	3-19	15-16
LV-TF1742	1700X4200	100x250	3-19	15-16
LV-TF1836	1800X3600	100x250	4-19	15-16
LV-TF2036	2000X3600	150x280	4-19	15-16
LV-TF2242	2200X4200	150x280	4-19	15-16
LV-TF2436	2440X3660	150x280	4-19	15-16
LV-TF2442	2440X4200	150x320	5-19	15-16
LV-TF2450	2440X5000	150x280	4-19	15-16
LV-TF2860	2800X6000	200x350	5-19	15-16
LV-TF3060	3000X6000	200x350	5-19	15-16
LV-TF3360	3300X6000	200x500	5-19	15-16
LV-TF3380	3300X8000	200x500	5-19	14-15
LV-TF33120	3300X12000	200x500	5-19	14-15

FAQ:

Q.: Does your glass tempering furnace has force convection system for processing Low-e glass?
A. Yes. All Lever glass tempering furnace could adopt the force convection system.
Q.: Do you make lower quality glass tempering furnace with cheaper price?
A. No. We only make high grade machine. We use top brand parts for the key parts.pls check the design for reference
Q.: What is the brand of ceramic roller for your glass tempering furnace?
A. Vesuvius, Zyarock, France brand, which the best brand in the world.

Q.: What is the brand of your big blower?
A. North-Taixin, a Taiwan brand. The quality is higher, cost is higher.

Q.What is the brand of your blower inverter?
A.Schneider or Siemens

Q. What is the diameter of your thermocouple
A. 5mm. For most other factory, they use 3mm or 4mm.
Q. Do you use ceramic roller groove?
A. Yes. It is better to avoid heat lose and has longer service life
Q. How about your quenching section compared with others?
A. Lever machine has more air inlet in quenching section, which guarantee more homogeneous air blowing.
Q.What is the brand of your PLC?
A. Siemens
Q. What is the brand of your industrial control computer?
A. Siemens
Q. What is the brand of your monitor?
A. Siemens
Q. Could we choose two monitors for the glass tempering furnace?
A. Yes. For the jumbo machine or flat and bent glass tempering furnace, we could provide 2 monitors, one at the loading section, one at the unloading section.
Q.: Are you the best manufacturer for the jumbo bent glass tempering furnace?
A. Yes. We make many furnace which has biggest bent size in China
Q.: Can i visit your running machines?
A. Yes. We invite you to visit our running machines in China. We have many running machines in different cities.
Q.: Can i get the detailed pictures?
A. Sorry, we don't provide the detailed machine pictures, but you can see the running machines at site.
About force convection system
Q.Why should i buy a glass tempering furnace with force convection system?
A.Yes, we suggest you to choose a force convection type furnace, this furnace could temper soft Low-e glass, because now, the Low-e glass is more and more popular in the market. And this force convection system can not be added in future. So from the beginning, we suggest the customer to buy a tempering furnace with force convection system.
 
Q.Do we need to buy a tempering furnace with top and bottom force convection system?
A.If the furnace with top and bottom force convection system, we call it "full convection tempering furnace". but we don't suggest you to buy the full convection furnace. This technology is a old technology which is popular few years before, during that period, many famous tempering furnace factory, such as North glass, Land glass, Jingglass, use this technology, but after running for some years, there are many problem for the bottom convection system, for example, the convection fan's shape changed, broken glass fall down to the heaters, etc.
Now, more and more factory asked our engineers to modify their full convection to top convection only.
 
Q.So only the top convection system is enough for tempering Low-e glass?
A.Yes, it is enough. You know, there are ceramic rollers at the bottom oven, there are enough heat by radiation from the ceramic roller.
 
Q.Which convection system is better? SS tubes or ceramic tubes?
A. SS convection tubes are better, but its cost is higher than ceramic tubes. For ceramic tubes, it is easy broken or after some time, if the steel pipe shape changed, the ceramic tubes will fall down. And it is not easy to repair to to re-fit the structure. So we suggest you to buy a force convection system with SS tubes.
 
Q.Does all the tempering furnace could have force convection system?
A. Yes. But now, the Low-e glass is mainly for architecture, buildings, and most of them is flat tempered glass. So now, on the market, there is no need the force convection glass tempering furnace for automotive glass, furniture glass.

About two heating chamber furnace
Q.: When will should i buy a glass tempering furnace with two heating chambers?
A. If you have many orders, but one set of glass tempering furnace could not meet the order demand. And you don't have space or extra investment to buy another separate glass tempering furnace. If you want to improve the quality of tempered glass.
Q.: Do these two heating chamber has force convection system?
A. Yes, if the investment is ok, we suggest you to make both two heating chamber with force convection system. This is very good to produce the triple silver Low-E glass. Now, in the market, there are more than 60% two-heating chamber furnace has 2 force convection system. If you don't have triple silver coated glass, you also could choose one heating chamber has force convection system, this could temper double silver coated glass.

What will we do:
Before sales
1. Providing suggestion to the customer how choose the most suitable glass tempering furnace, such as which type, what is the max. Glass size, thickness, capacity, etc, according to the customer's situation and the target market.
2. Providing reference for other glass processing machines once the customer are new for the glass industry.
3. Providing reasonable layout design to help the customer to arrange all the glass processing machines in the workshop.
During production
1.Strict QC inspection for every part and every process
2. Providing progress report to customer
Before shipment:
1.Arranging trial installation and debugging of all componentsto save on-site installation and debugging time
2.Confirm requirements/parts list, etc
During installation:
1.Installation engineer will provide progress report to ours
2.Testing glass according to the requirements in contract and customers
3. Strict tempered glass test
After sales
1. Remote diagnosis to provide zero-distance service;
2. Providing local service for many market
3. Providing spare parts on time.

Why choose us:
Factory to customer direct sale