The application of Solidot I/O modules on the photovoltaic glass automatic packaging assembly line

Traditional photovoltaic glass factories mostly use manual methods to pack photovoltaic glass pallets, which has low efficiency and high labor intensity. If it is upgraded to automatic packaging, it can greatly reduce the labor intensity of workers and reduce labor costs, and efficiency will be greatly improved. At the same time, the consistency and quality of the packaged products can also be guaranteed.

In response to the above needs, the photovoltaic glass automatic packaging line was born. It can automatically perform processes such as tape strapping, laminating, and wrapping on the stacked photovoltaic glass without manual operation. Both the front and rear ends can be designed to connect to AGV forklifts to automatically load and unload glass pallets.

The products used in this case are XB6-PN2002ST , XB6-3200B , XB6-0032B, etc.

Production process introduction

Process: loading - centering - long side packed inwards - buffer 1 - short side packed inwards - buffer 2 - robot loading - horizontal packaging - long side packed outwards - buffer 3 - short side packed outwards - top laminating - wrapping film all around - unloading

【Centering mechanism】

This component uses a motor reducer to drive the chain transmission. After the push claw contacts the goods, the sensors on both sides of the push claw send feedback signals. If the error between the signal and the set parameters of the goods is large, an alarm signal will be issued, and then the parameters will be manually corrected to ensure that the glass pallet is in the target position.

【Long side strapping machine】

This component straddles the conveyor line and automatically completes the corner protection and inner long side strapping of the goods on the iron pallet, as well as the subsequent outer long side strapping.

【Short side strapping machine】

This component is arranged on one side of the conveyor line to automatically strap the goods on the iron pallet on the inner side of the short side, and subsequently strap them on the outer side of the short side.

【Robot Workstation】

The robot places the side and top wood panels at the set positions of the product. The workstation is surrounded by fences and safety doors. The robot stops working when the safety door is opened to ensure safety.

【Horizontal baler】

The component straddles the conveyor line and when the guard plate is placed, the horizontal frame is lowered for horizontal bundling.

【Laminating machine】

This component uses a motor reducer to drive the chain transmission to move the laminating frame up and down, and can automatically adapt to the size according to the length of the goods. After lamination, the film is cut with a knife.

【Film Winding Machine】

This component wraps the goods around. Fences are installed around the wrapping machine and a safety door is set up. When the safety door is opened, the machine stops working to ensure safety.

Current pain points

Most of the processes need to be performed manually, and the operators are required to have high professional skills, resulting in high labor costs. In addition, the efficiency of manual packaging is relatively low, and it is easy for the baler to fail to thread the arrow due to improper placement, resulting in high losses.

I/O module application

The equipment uses PROFINET protocol for communication and collects, transmits and controls signals through the plug-in I/O modules XB6-PN2002ST, XB6-3200B and XB6-0032B of SOLIDOT. It can promptly detect errors in the packaging process and accurately compensate and correct them, thus realizing automatic packaging of photovoltaic glass pallets, greatly improving packaging efficiency and ensuring packaging consistency, saving labor costs and reducing packaging losses.

The controller controls the displacement of the hydraulic push plate of the glass pallets centering device through the XB6-0032B digital output module, so that the glass pallets stops accurately in the horizontal center position of the conveyor chain line; controls the solenoid valve to drive the robot to automatically grab the packaging materials and stack the packaging materials at the corresponding position of the glass pallets for subsequent packaging processes.

The XB6-3200B digital input module is used to collect position signals at multiple locations on the conveyor line (such as sensors on both sides of the push claw, proximity sensors, film mark sensors, etc.), and to achieve multi-point tracking and detection of the assembly line. When the error between the signal and the set parameters of the goods is large, the system can issue an alarm signal in time; if the technical requirements are still not met after tracking the preset number of times, it can automatically stop for inspection to avoid the generation of waste products.

Product Advantages

The XB6 series of plug-in remote I/O modules from SOLIDOT have the advantages of small size, fast response, simple installation and wiring, pluggable terminals, simple configuration, and stable operation. Through the above applications, it provides a stable and cost-effective solution for the photovoltaic glass automatic packaging line.

At present, SOLIDOT has launched a new generation of plug-in I/O-XB6S series products, which have good anti-interference ability and ease of use. In addition, there are integrated I/O modules suitable for decentralized few-point signal control, IP67 protection grade IO-Link bus I/O, bus valve terminal and other products. The rich product series can meet the diverse and complex needs of customers on site and bring a better user experience.