Polar plate screen printing machine is a device used in the hydrogen energy industry for bipolar plate sealing glue printing, also known as polar plate brush glue machine. Its working principle is to print glue into the concave and convex grooves corresponding to the sealing ring of the bipolar plate cathode plate or anode plate through the process of screen printing, and print a high degree, uniform width, and consistent flatness sealant strip.
Compared to the dispensing sealing process, the brushing sealing is currently a more reliable sealing process that has been verified. The sealing area has good airtightness, high reliability, and high energy, effectively controlling the amount of glue, and effectively solving the interface problem of the dispensing process, improving the stability and reliability of fuel cells. For many years, Yibaolai Polar Plate Screen Printing Machine has successfully cooperated with multiple manufacturers and research institutions, and the hydrogen fuel cells produced are widely used in industries such as public transportation, logistics transportation, rail transit, new energy vehicles, aerospace, etc.
Next, we will talk about the main structure and functions of the plate screen printing machine
1. The four column overall structure and high-strength alloy aluminum printing beam ensure the stability of the equipment and the uniformity of printing pressure.
2. The printing machine head includes a mesh frame system, printing transmission system, ink scraper holder, off screen system, lifting guide pillar, mesh frame fine adjustment and other structures
3. The running platform structure includes a printing platform, product fixture, safety grating, safety rod, and platform fine-tuning structure.
4. The host is controlled by a PLC system, and the touch screen human-machine interface is digitized to set printing parameters, making the operation simple and convenient.
Specific functions:
1. Printing platform (running platform): Moving forward and backward, the screen board rises and falls vertically, the printing head runs in a straight line left and right (or forward and backward), and the upper and lower material positions are set at the outer end of the machine for convenient loading and unloading. When running to the inner end, the product is printed;
2. Printing scraper movement form: left and right (brushing glue along the long edge of the electrode plate in the direction of the flow channel; servo motor drives the printing knife holder, photoelectric eye controls the stroke, independent adjustment, and intelligent control of speed.
3. The platform, screen lifting, and printing use independent driving sources, with coordinated movements and stable and adjustable speed; The printing platform is equipped with strong suction, and can choose from two modes: long suction and automatic suction; The printing platform also comes with a hair dryer, which can assist workers in picking up items.
4. Independently designed head lifting device, convenient for scraper/ink return blade, screen loading and unloading, and screen cleaning.
5. The equipment is equipped with safety gratings and emergency stop protection devices. The grating interlock can completely lock all mechanical movements of the machine, ensuring the safety of operators.
6. The fixture is fixed on the printing platform, and the pneumatic positioning pin extends during feeding. After the electrode plate is fixed in position, it is fixed by vacuum adsorption. The positioning pin retracts into the fixture, and the operation is controlled by the PLC main printing linkage.
7. Active mesh frame structure: The left and right mesh clamp arms are equipped with plate spacing adjustment devices, suitable for different specifications of mesh plates, easy to adjust, and the mesh plate is fixed by a dual fixed structure of mechanical locking and pneumatic locking.