Junction boxes are installed on the backside of photovoltaic (PV) panels and serve to protect electric components from environmental elements. To improve junction box mounting and protect integral components, a solar panel manufacturer was exploring ways to decrease costs, improve manufacturing efficiency, and meet panel lifetime expectations.
CHALLENGE
The customer was looking for the most efficient and consistent way to pot their solar panel junction boxes. It was paramount that they found a reliable solution that would protect the ribbon wire connection from corrosion as well as protect against moisture ingress through the back panel. In addition, the potting materials had to seal and adhere to a variety of substrates including a plastic junction box, metal ribbon wires, and the glass back panel.
SOLUTION
Automation for silicone Sealant Dispensing potting Machinefor Solar Frames and Junction Box
KPD-700 s an automatic silicone dispensing station for j-box. The unit includes an XY robot for silicone/glue dispensing and a conveyor belt for j-box transportation. The system eliminates all the errors typically faced in manual or semi-automatic sealant applications. The system ensures consistent sealant dispensing and helps to cut down on wastage or residue, lowering the production costs. This sealing solution can be adapted to various types and models of j-boxes.
Machine picture
Machine description and working principle
Compound materials A & B are kept in two tanks separately. There are two sets of metering pumps inside the machine for metering A and B resin by setting ratio, draining out material individually from tank A & B. Liquid A & B mix with each other in the mixer pipe and dispensed out according to the programmable data.
Machine Breif introduction
1. The whole bucket of glue only be placed on the tank side of the machine, and the equipment can be automatically extracted without manual pouring into the storage bucket.
2. The storage tank can be customized according to the potting of AB glue in each hour.
3. The storage tank has automatic defoaming function and material location level detection function.
4. The tank can be customized according to your glue need, such as: automatic stirring, automatic constant temperature, air drying, etc. ..
5. High-precision screw pump (gear pump / plunger pump) pushes glue through the cavity, with high pressure and fast glue output.
6. The servo motor drives the screw pump , the speed of each pump can be set separately, to keep the flow speed of each pump, To achieve the required mixing ratio (1: 1--1: 10 adjustable).
7. Equipped with dynamic mixing device to make the mixing of glue more uniform.
8. Equipped with automatic cleaning function, no need to manually cleaning the machine, avoid manual cleaning trouble.
9. Equipped with 500 * 500mm mechanical arm, which can edit the running path, To actual perfect potting ab glue at correct location on product
Options:
1.Dispensing with Dozing nozzle or Static mixer/dynamic mixer
2.Constant or Variable resin:hardener mixing-ratio
3.Single or Multi Dispenser Potting
4.Fixed or Moveable dosing nozzle (Dispensing)
(X-Y-Z axis movement or interpolation)
5.Automatic Loading & Unloading of Trays
6.Ability to dosing different quantities of raw materials to different locations in one program
7.Automation: pre-heating and curing oven with conveyor
8.Extra degassing tanks for uninterrupted production
Dosing Pumps
1. Very precise even at very low volumes
2.Constant mixing ratio ensures faultless dosing
3. Metering pumps ensures minimal amounts of reactive mix
4.Temperature controlled design
5. Resistant to abrasion even when filled with high abrasive casting resins and does not require maintenance
Machine Vacuum Tank Agitator
1. Full homojenization
2.No sedimentation
3. Perfect degassing
Static Mixer /dynamic mixinng
1.Perfect homogenization without dead space
2. Abrasion resistant & low maintanence
3.Temperature controlled design
4. Ensures optimal viscosity of reactive compounds at constant temperature
5.Provides very long service life with a closed cleaning system
Applications:Potting&isolation &Casting: electronics componnets , PCB board, Capacitor, power supply, transformer, ignition coil, reverse sensor, circuit board, filter products ,underwater parts, electronic ballast ,aviation parts, aerospace parts.... Dispensing&Dosing : LED strip , led lamp , led bulb , aluminum,led screen , display module ,medical parts,medical liquid filling ....
Bonding&doming : LCD screen ,LOCA bonding,ABS plastic,different types of stickers , badge , keychains , souvenirs ,arts , photo frame , and other arts graphics....
Transformer , capacitance , power module , regulating plate ,protection module , generator , pressure package , soli relay ,fault indicator , Sensors , junction box , clutch , wave filter , water meter , boattery cover , rectifier and so on ... 
Suitable Material
1K and 2-component polyurethanes, epoxies, acrylics, silicones, temperature, humidity and UV curing materials.Two component potting materials , 2-part compound materials, AB part compound materials , 2K silicones ,2K epoxies resin, Bi-component PU, Ployerster, Polyurethane, UV materials and so on . 
