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Since the introduction of fully automatic insulating glass production equipment more than 20 years ago, through the joint efforts of technical engineers, equipment manufacturers, and users in various countries and regions, the production line of insulating glass has been pushed to a new high point. The batch is suitable for insulating glass machinery and equipment in various complex production and processing environments. With the gradual expansion of the production demand for large-format insulating glass, to be more in line with the production of modern automated insulating glass, the equipment has been developed from the original horizontal equipment to the current vertical insulating glass production line. The vertical production line depends on the method of combining the sheets. It is subdivided into three methods: internal combination, external combination, and internal and external combination. This article will specifically explain the characteristics and differences of these three combination methods. 

What is the composite of vertical insulating glass production line? 

The two pieces of glass and the aluminum frame coated with butyl glue are combined with the three parts under a certain pressure to make the finished insulating glass.    

The characteristics and differences of the inner-coated hollow glass production line, the outer-coated sheet, and the inner-outer-coated sheet are as follows:     

1. The number of section from insulating glass production lines is different. 

The outer flap has seven segments, and the inner flap has six components (Jinan LIJIANG Vertical Insulating Glass Production Line - LJBZ2025/LJBZ2535 has seven parts, and the equipment mainly includes 7 parts: 01 feeding section, 02 cleaning section, 03 conveying section, 04 aluminum frame placement section, 05 conveying section, 06 aeration plate pressing section, and 07 output section).

The LJBZ2025/LJBZ2535 Jinan LIJIANG Vertical Insulating Glass Production Line 1

The LJBZ2025/LJBZ2535 Jinan LIJIANG Vertical Insulating Glass Production Line 1

The number of section from Jinan LIJIANG insulating glass production line

The numbers of section from Jinan LIJIANG insulating glass production line

2. The processing efficiency is different. 

The speed and formation rate of the inner-coupling film is lower than that of the outer-coupling film. According to the proficiency of the workers, the external-coupling is about 30% higher than that of the internal-coupling.     

3. The visibility is different. 

The internal closure is the inner closure of the board, and the operator cannot see the closure process. The operator of the outer film can see and adjust the function of the film manually.     

4. The error rate is different. 

In the production process, there is a specific error when scribing the glass so that the workers can see the error of the film during the external closing, and they can perform manual correction in time to reduce the error rate and produce faster speed.     

5. Large and small pieces of processing. 

The inner-coated insulating glass production line can do both large and small-sized slices but not the outer-coated glass production line;     

6. The price is different. 

The internal film production line has low capital investment and is suitable for the initial stage. Compared with the inner-coated sheet, the production line for the outer-coated insulating glass has a different section. The price is moderate, and the production efficiency is high, suitable for most customer needs. The internal and external composite hollow glass production line has comprehensive functions and high capital investment, suitable for medium and large-scale or large-scale hollow glass processing plants.    

7. Both internal and external advantages. 

The internal and external combined film has the advantages of both internal and external bonding. It is the embodiment of the higher technology of Jinan LIJIANG insulating glass equipment. If the capital and scale permit, it is recommended to choose this type of insulating glass equipment to produce various specifications of insulating glass, which could be satisfied.     

8. The first four paragraphs are the same. 

The first four sections of the three types of vertical insulating glass production lines are the same: inner joint, outer joint, and inner and outer joint. They are divided into the upper section, cleaning section, drying chamber, and glass waiting section (upper aluminum frame section). The configurations and functions of each type are the same. However, each equipment manufacturer has a different design and technology in the cleaning and drying section, such as the driving of the brush, a motor for each brush drives some, and a belt drives some to drive the runner, as long as the speed reaches the washing and drying glass requirement, then any kind of drive can be. In terms of energy-saving alone, it is better to be driven by a belt. The difference between the air knife and the air device in the drying section is that some are equipped with circulating internal hot air, and some are external suction through a filter and reheating device to air-dry the glass.  

The glass washing and drying section of Jinan LIJIANG insulating glass production line 1

The glass washing and drying section of Jinan LIJIANG insulating glass production line 1

The glass washing and drying section of Jinan LIJIANG insulating glass production line 2

The glass washing and drying section of Jinan LIJIANG insulating glass production line 2

The glass washing and drying section of Jinan LIJIANG insulating glass production line 3

9. The difference between the fifth section of the insulating glass production line. 

The internal union, external union, the internal and external association began to change in the fifth paragraph. The fifth section is the transitional section of the internal collaboration. At the same time, the external union and the internal-external union are a more critical section in the fifth stage, which is where the film is combined. This section is used to combine the hollow glass, the hydraulic system controls the movable plate, and the forward and backward movement parameters are controlled by the travel switch on the fixed frame; when the front glass reaches the photoelectric switch at the end of the section, the glass decelerates, and the side positioning rises. It stops when the glass comes with the side positioning. 

The plate pressing of Jinan LIJIANG insulating glass production line 1

The plate pressing of Jinan LIJIANG insulating glass production line 1

The plate pressing of Jinan LIJIANG insulating glass production line 2

The plate pressing of Jinan LIJIANG insulating glass production line 2

The pressing method of Jinan LIJIANG insulating glass production line: the lead screw pressing 1

The pressing method of Jinan LIJIANG insulating glass production line: the lead screw pressing 1

The pressing method of Jinan LIJIANG insulating glass production line: the lead screw pressing 2

The pressing method of Jinan LIJIANG insulating glass production line: the lead screw pressing 2

The screw pressing method is used to ensure the ultra-high precision pressing glass with fast speed, which can be used to make super large and super thick glass. However the user must needs a precise temper furnance when they use tempered glass, otherwise it is easy to crush the glass.

At this time, the movable plate retreats and stops when it touches the retreat travel switch. When the photoelectric switch one on the beam detects the second piece of glass, the shaft decelerates and moves down, and when the photoelectric switch two on the beam detects the second piece of glass, the beam stops moving down; The amount of glass is transported forward through the lower support and the tapered wheels on the beam and the sticks on the movable plate. 

The movable plate section of Jinan LIJIANG insulating glass production line 1

The movable plate section of Jinan LIJIANG insulating glass production line 1

The movable plate section of Jinan LIJIANG insulating glass production line adopts Bystronic technology, the pressing board is set with many adjustable screws. Once there are some parts of the board are deformed, the user can adjust the screws of the corresponding parts to restore the flatness of the board.

When the photoelectric switch on the end of the beam detects the second piece of glass, the second piece of glass will decelerate and move to the side position; Hold up and move down to reset, and the beam will move up and stop when it touches the travel switch. Generally, when the first few pieces are produced, step on the footswitch, and the cylinder with a pressing roller will press the two pieces of glass together, and at the same time, the hollow glass will be pressed. Convey to the compulsory section; check the condition of the glass sheet. If the glass sheet is in good condition, it will directly hit the sheet automatically (without stepping on the footswitch), and so on.

The removable timing belt type lower inflation of Jinan LIJIANG insulating glass production line 1

The removable timing belt type lower inflation of Jinan LIJIANG insulating glass production line 1

10. The sixth section is the plate pressing section of the insulating glass production line. 

If it is an inner-fitting sheet, this section is used for flat pressing of the hollow glass. This section has an upper and lower stepping motor and an 8-zone suction cup, which can well control the proper bonding of the glass. The hydraulic system controls the flat pressing process, and the automatic compaction is completed in the flat pressing section of the closed insulating glass. The massive feature of this section is the use of glass middle positioning, which can make the parallel pressing force of the hollow glass uniform and improve the work of the equipment. The principle of intermediate positioning is to check by entering the initial photoelectric switch and the intermediate photoelectric switch of the section, stopping the hollow glass at the middle part, and the microswitch controls the pressing force of this section. If it is an internal or external composite, this section is used for the composite and flat pressing of the insulating glass. 

The plate press and argon gas filling section of Jinan LIJIANG insulating glass production line 1

The hydraulic system controls two processes: the Jinan LIJIANG Glass insulating glass production line LJBZ2025, LJBZ2025G, LJBZ2535, LJBZ2535G, LJBZ2535DG and the pneumatic system controls Germany Siemens PLC control system. The section is automatically completed, which significantly reduces the structural length of the entire insulating glass production line. The glass is supported and conveyed by the conveying rubber roller. The motor directly drives the conveying roller after frequency conversion and speed regulation. The rear press has an air flotation device to assist in conveying the glass; the front press is equipped with a suction cup device, a vortex pump, and an energy storage device. And the vacuum generator enhances the suction force, which can hold the glass firmly. 

The Jinan LIJIANG Glass insulating glass production line is controlled by the cylinder to tilt the transmission beam downward; the glass support of the 1800A, 2200A Jinan LIJIANG insulating glass production line is controlled by a stepping motor and driven by a hydraulic station to ensure stability and control accuracy. When producing large and small pieces, it is set by the touch screen parameter. 1800A, 2200A, 2500A are controlled by PLC stepping motor, offset to the set parameter value, and complete the glass combining action. According to the set time and pressure control, the sheets are combined and flattened to make the insulating glass meeting the requirements.

Jinan LIJIANG Vertical Insulating Air-floating Glass Production Line
Jinan LIJIANG Vertical Insulating Glass Production Line
Jinan LIJIANG Double Gas Filling Insulating Glass Production Line


For more information about Jinan LIJIANG Glass insulating glass processing equipment and insulating glass processing accessories, please click here to learn more

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