In injection molds design field, commonly used types of water lines or cooling lines are mainly referring the following: 1. Linear waterway: linear waterway channel, simple and practical, suitable for plastic products with small size injection molding. 2. Circular waterway: compared with linear waterway, the flow resistance of circular waterway is smaller, but it is not suitable for injection molding with larger product size. 3. Snail type waterway: The waterway is snail shaped, which can effectively improve the filling performance of plastic products, but the processing difficulty and cost are correspondingly high. 4. Plunger type waterway: the waterway with the plunger as the core can ensure that the product is filled, especially suitable for processing large closed products. 5. Soaking water: The use of special soaking water and efficient circulation water, can effectively improve the quality of injection products, but the cost of equipment and materials is relatively high. Two, injection mold water design principles In the process of injection mold water design, the following principles need to be followed: 1. The water is as short as possible to reduce cooling time and improve production efficiency. 2. The waterway is as large as possible to increase flow and reduce flow resistance. 3. Water should be evenly distributed to ensure that plastic products are filled evenly. 4. The water should avoid direct contact with the wall of the mold cavity to avoid uneven cooling. 5. The waterway should avoid bending and dead corners, so as not to collect water and foam. Third, injection mold water processing method The main processing methods of injection mold waterways are as follows: 1. Drilling method: directly on the mold drilling molding, simple operation, but difficult to control the aperture and position accuracy. 2. Copper tube method: The copper tube is embedded on the mold, the pipe diameter and position accuracy is high, but the processing is complicated and the cost is correspondingly high. 3. Welding method: The use of electron beam welding or laser welding technology to accurately weld the components of the waterway on the mold. Four, injection mold waterway common failure In the process of injection mold production, common water faults include the following: 1. Too high or too low water pressure: it may affect the filling performance and dimensional accuracy of plastic products. 2. Water blockage: may lead to the surface of plastic products is not smooth, blisters and other defects. 3. Water leakage: it may affect the production efficiency of injection molds and the quality stability of products. Taking the above points into account, injection mold waterways play a crucial role in the injection molding production process. Proper waterway design and processing can effectively improve the quality and production efficiency of plastic products and reduce production costs.
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