Requirements for injection nozzle of injection molding machine
Update:2018-09-19
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The injector nozzle can be divided into straight through nozzles, locking nozzles, hot runner nozzles and multi channel nozzles.
1. Accuracy requirements for injection parts
After assembling, the whole injection parts should be placed on the frame, and the nozzle and the main casting sleeve of the mould must be tightly joined to prevent overflow. The center line of the injection parts should be concentric with the center line of the clamping parts. In order to ensure the matching accuracy of the injection screw and the inner hole of the barrel, the positioning of the two injection cylinder holes and the barrel must be ensured. The parallelism of the center hole and the symmetry of the center line must be guaranteed for the horizontal machine, and the parallelism of the two guide holes of the seat cylinder and the center line must be guaranteed for the vertical machine.
The factors affecting the position accuracy are the dimension accuracy, geometric accuracy, manufacturing accuracy and assembly accuracy of the holes and shafts of the related components.
The clamping part is one of the important parts of the injection molding machine. Its function is to realize the movement of opening and closing, make the system elastic deformation reach the clamping force and lock the mould.
Two. Requirements for clamping parts.
(1) the movement of the opening and closing die of the kinetic model must be high speed, smooth and mute.
2. The clamping mechanism must meet the requirements of rated clamping force and reliably lock the mold.
3. The clamping parts have enough mold space and model stroke.
4. Motion model must be reliable and safe, protect the safety of people and mould, and set double insurance.
The clamping parts and their dies have sufficient strength and rigidity.
The clamping parts consist of clamping frame, clamping mechanism, mould adjusting device, protective device and ejection device.