Hot runner technology, with its cost savings, shorten the molding cycle and other unique technological advantages, become an important area of plastic injection molding process.
Benefits of hot runner technology over conventional cold runners:
Save raw materials, reduce costs;
Shorten the molding cycle, improve machine efficiency;
Improve product surface quality and mechanical properties;
Do not have to use three-plate mold that can use point gate;
A single product can be economically molded with side gates;
Improve the degree of automation
Valve gate can be used to control gate freezing;
Multi-cavity mold injection molded parts of the same quality;
Improve the appearance of injection molded products and so on.
The hot runner installation is directly related to product quality, The following is the hot runner installation precautions:
1, put the mold, put the upper die, with air gun clean all holes and templates.
2, check the hole size, focus on the depth of inspection, remove the glitches on the template.At the same time, check the lock manifold screw hole, and the center nail and anti-dowel hole is completed processing, this place for the first time to do hot runner mold Master often missed.
3, the hot-melt adhesive sealing position and the stage to take the two parts with the mold swept red lead.
4, the hot nozzle test equipment, and then check out the closures to see if the plastic sealing position Hongdan, step whether the mold encountered. If not, stop the installation, check the error causes adjustments to ensure close tight with no leakage of material. Do not bump tip.
5, the hot Tsui all installed, at the same time installed the center pad, the center pin, anti-sales, and in their plane swept red lead.
6, check the Tsui plane and the center pad height, error control within 0.05mm.
7, try to install manifold. Note that when installed formally installed manifold not leak hot Tsui seal.
8, check the manifold and hot Tsui with, to ensure that all encountered Hongdan, to ensure that no leakage of plastic.
9, finishing Hot Tsui alignment, be neat and beautiful, and the number of each line in accordance with the order, the line insert plug acne.
10, the official installation of the manifold, lock manifold screws (be sure to lock the balance to maintain the height of the four corners of the manifold), the control manifold higher than the perimeter of the template metronome 0.10-0.15mm, and then in the manifold Meson swept red lead.
11, the code template test equipment, check whether the plane encountered meson red lead, to ensure that the template suppressed shunt meson.
12, locking mold, the mold erected, from the sub-surface inspection of the gate and the tip of the meet with the requirements to be less than the nozzle tip 0.1-0.2mm, the tip can not be eccentric. Detection of each circuit, so no short circuit, open circuit, leakage, etc., each line corresponds to the correct, to ensure that all circuits are normal.
13, connected to the thermostat to test the temperature, the first heating should be less than 100 ℃, holding ten minutes preheat dehumidification, to protect the heater; then, warmed to the desired temperature, normal, then you can arrange lifting Mold test mode.