Barrel heating coil will generally be divided into bis, three or four control. Electrical cabinet of the ammeter paragraphs show the size of electric current loop. Ammeter reading is relatively fixed, if found running ammeter relatively long period of low readings, it may have taken place in electric coil failure, or poor contact wire or electric wire oxide thinning, or a heating coil to burn, these are parallel circuit will increase the resistance of the current decline. Ammeter reading in a certain time can also be a simple one by one with a plastic wall in the electric outside wiping zoned to see whether or not expected to be fused to determine whether an electric power or burned circle.

 1. All model control Die is a huge mechanical thrust will die together tightly to resist molten plastic injection molding process and fill the high-pressure injection molds and tooling to make the tremendous force open. On the security door, the trip switch signals are given, mold action immediately. First of all, dynamic templates to slow start, ahead of a small short distance later, the original slow down lever switches from the Press, activity board to switch to fast forward. In advance to die near the end, the control rod of the other side of the bar also slow pressure switch, the activities board at this time to slow and turn to low-voltage forward. In the low-pressure die process, if there is no obstacle between the mold, it can successfully fold to pressure on high-voltage switch, switch to high-pressure machine to straight hinge action to complete the mold. The distance is very short, generally only 0.3 ~ 1.0mm, just switch to high-pressure die immediately terminate on the hit limit switch, then moves to stop, making a mold process. Injection molding machine mold structure of the entire hydraulic and mechanical link. No matter what kind of structure, and finally by connecting rod fully extended to implement Die force. The process is straight-link the activities of boards and tail plate open process, but also four rod force the process of being stretched. Die force, you can die from qualified tight moment hydraulic table know deserves the highest rise, with the hydraulic power mode of maximum value would be high, low and vice versa. Smaller-scale injection molding machine is no mold hydraulic table, when according to the straight rod case to determine whether mold together really tight. If a mold injection molding machine easily when the rod straight, or "almost point" can not straighten, or several vice-link in a not yet fully extended, there will be bulging when injection mold, parts on there will be flash or other illnesses.

 2. Kai-model control When the molten plastic injected into the mold cavity until after the completion of cooling, as is the open-mode action, remove the products. Open mold process in three phases. Slow to open the first phase of mold, to prevent mold cavity torn in parts. The second phase of rapid open mold, so as to shorten the time to open mode. Slow to open the third phase of mold, so as to reduce the open mode of inertia and vibration impact.

3. Injection molding process conditions of control At present, the injection molding machine manufacturers have developed a wide range of process control methods, generally are: injection speed control, injection pressure control, plastic injection mold cavity filling volume control, screw back pressure and rotational speed, such as plastic Lian state control. Process control to achieve the purpose is to improve the quality of products, so that the performance of the machine be maximized.

4. Injection speed of process control Injection speed of process control is to screw injection itinerary divided into 3 ~ 4 stage, respectively, at each stage of their appropriate use of injection speed. For example: in the molten plastic through the gate at the beginning of slow injection speed, in the process of filling high-speed injection, in filling the end to slow down. In such a way to prevent the spill is expected to eliminate the flow marks and reduce residual stress and other products.