Application of rotary joints in injection molding machines

The rotary joint on the injection molding machine is also known as the water transport sleeve, water shaft, and water circulation rotary joint. It mainly provides water cooling for the mold cooling on the turntable machine. It adopts a 2-inch and 6-out structural design and is usually designed according to the tonnage of the injection molding machine. The size of the water transport sleeve will also change accordingly for each tonnage. It is a hollow shaft rotary joint, mainly designed for the column design of the injection molding machine.
The rotary joints used in the injection molding machine industry usually contain a large amount of river sand in the water medium, which is acidic and has certain material

requirements. At the same time, imported sealing rings are used to resist the wear of the sealing rings caused by river sand inside. Therefore, a labyrinth seal is used to isolate the water medium layer by layer, and screws are installed from top to bottom to fix the inner shaft without rotation. A U-shaped groove connection is used, and the two-color machine turntable rotates to drive the outer ring of the water transport sleeve to rotate. It is a structurally complex rotary joint product.The rotary joint on the injection molding machine has high quality requirements, because once the rotary joint leaks water, it will flow into the bearing under the turntable, causing the bearing to rust and get stuck, affecting the use of the injection molding machine. At the same time, it will reduce the cooling speed of the mold during product production. If the water jacket on the injection molding machine leaks, the entire position on the turntable of the injection molding machine needs to be removed, which is a huge workload. Therefore, the rotary joint in the injection molding machine industry has a 2-year warranty without repair or maintenance. In order to make the product have a longer service life, Xindeli Company has designed a special water jacket for injection molding machines to ensure a longer service life. This product is designed with new technology, new seal, and new structure to make it more worry free for customers to use. More secure and stable.