Application of new hot runner flow regulation system technology

1、 Traditional issues:

There are some problems in the traditional production mode of centrifugal fan blade 1 out 2 - serious waste of runner materials, low qualified rate of products and poor dynamic balance of products· The use of fine nozzle cold channel glue feeding method produces a lot of waste and serious waste of raw materials· After pressure maintaining, the cavity is overweight, the product qualification rate is low, and the dynamic balance of the product is between 0.4-0.5. After the molten plastic enters the splitter plate, due to the processing error, the temperature difference of the splitter plate and other factors, there will be an imbalance in the actual production.

2、 Solution:

1. The throttle valve controls the flow level of the splitter plate.

2. The compound motion structure of oil cylinder gear gate sleeve controls the flow balance of the flow channel.

3、 Technical improvement effect:

1. The first mock exam of the hot runner is cooled by a single spoon type, and the two chamber is balanced. The single chamber has high dynamic balance. The weight of the first nozzle is 14g. The waste material of the runner is reduced by about 50g compared with the three die. The automatic gate is cut off by the compound movement structure of the oil cylinder gear and gate sleeve. Compared with the traditional one out two structure, the product forming cycle is shortened by 20 seconds. Taking the production of 100000 mold products with one set of mold as an example, the production time of 47 shifts will be reduced.

2. The dynamic balance is more stable, kept within 0.3, higher than the standard of Gree 0.5, and the qualified rate of products is as high as 98%; Similarly, 450t injection molding machine is used, which saves customers' injection molding machine resources;

3. Save the waste of flow channel, and produce 100000 products with one set of mold, which can save 4.9t materials. The new hot runner system can be used in other products that are difficult to solve the glue inlet balance, such as cross flow fan blades, so as to greatly improve the output of fan blade products.

4. In 2018, it was used on two sets of Gree molds. For large products such as axial flow fan blades, the flow imbalance of a single blade can be adjusted on the machine by using hot runner throttle valve to avoid repeated loading and unloading, mold repair and mold removal.

5. The new hot runner flow regulation system can realize one output 4 and one output 8 of fan blade products

The details are as follows: