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Composite Rubber Insulators Molding Machine

HTV Silicone Insulators Injection Machine

HTV Silicone Insulators Injection Machine, suitable for making composite insulators, arrestors, hollow core bushings with solid silicone rubber material.Huayi can provide the models from HYZ-200B to 2400B, and designed the world biggest rubber injection machine for making 1000kv silicone rubber insulators in 2008.
1.Vertical clamping unit, horizontal plastic& injection unit,with large injection volume, suitable for making HTV silicone rubber insulators,insulation bushings, hollow core insulators and cable joint body up to 1000kv;
2. HTV silicone rubber insulators injection machine wIth feeder to push soft HTV silicone inside plastic unit;
3. Proportional flux/ pressure controls the plasticizing process,specially designed plasticizing check valve, the flow channel is fully streamlined, no dead corners,less friction&heat generation, and no aging rubber;
4. Plasticizing screw with reverse function, easier to clean the injection barrel and less rubber wasting while changing rubber;
5. Germany high precise transducer controls moving stroke, accuracy telorance within 0.01mm;
6. Siemens advanced electrical control system, stable and flexible program edition, can provide tailord-made programming according to customer requests;
7. Injection unit adopts the closed-loop control to make higher injection accuracy;
8. Injection barrel adopts a special structure to ensure that the matching gap between it and the metering cylinder is moderate, no rubber leakage, it is convenient for assembly/ disassembly and maintenance.
9. Plasticizing barrel, central connection body and other parts are added air venting channels to ensure that no air trapped during the plasticizing process.
10. The heaters of the heating platens are non-uniformly distributed, and the PLC has the function of temperature compensation and adjustment on both ends of the mold to provide even temperature for insulators molds.
11. Cold runner system for long size molds adopts for saving rubber material, no rubber runners wasted.
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Product Description

HTV Silicone Rubber Insulators Injection Machine, with large injection volume up to 100 L, suitable for making HTV silicone rubber insulators, insulation bushings, hollow core insulators, lightning arresters.
HTV silicone rubber injection machine with horizontal injection unit,can equip with stuffer,cold runner system, lower mold supporter to adopt long size insulators molds.

Item HYZ-200B HYZ-300B HYZ-500B HYZ-650B HYZ-800B HYZ-1200B HYZ-1800B HYZ-2400B HYZ-2400B
Item HYZ-200B HYZ-300B HYZ-500B      HYZ-650B HYZ-800B      HYZ-1200B HYZ-1800B HYZ-2400B HYZ-2400B
Clamping Force(KN) 2000 3000 5000 6500 8000 12000 18000 24000 24000
Injection Volume(CM3) 2000 4000 10000/
15000		 20000 28000/
40000		 30800/
40000		 40000/
80000		 80000 100000
Heating Platen Size(W*L/MM) 550*550 600*1300 630*1500 650*1600 1000*1600 850*3500 1000*2800 850*5500 1200*3500
Space Btwn Platens(MM) 570 780 940 1200 1600 850 1600 1000 1900
Dimension between Tiebar(MM) 650*360 680*500 780*580 920*710 1240*790 1200*2200 1240*2290 1200*4390 1540*2540
Max.Clamping Stroke(MM) 500 600 700 700 1000 650 1200 650 1300
Min.Mold Thickness(MM) 80 190 250 510 610 210 410 360 610

HTV Silicone Insulators Injection Machine Feature One

Cold runner system

    The first cold runner system came from European, and China first cold runner system design came from Huayi Machinery; Why european rubber injection machine developed cold runner system, and what is the advantages of cold runner system？
    1. Cold runner system with temperature control unit, rubber inside is always in melting status, with good flowablity,the rubber are easier to inject inside mold cavity.
    Remark: temperature control of cold runner is so importance, the rubber could not be cured inside;
    2. Insulators molds with long length, cold runner system is an extension of rubber injection machine nozzle, with distributing channels which can carry the rubber to ends/edges of insulators molds. Because the rubber inside with good flowablity, and injection runners are inside the cold runner, there will be less cured rubber wasting.

HTV Silicone Insulators Injection Machine Feature Two

Mold Demoulding System

    To make the silicone rubber insulators, the insulators mold is one of important factors. Compared with compression molding way, injection type insulators molding can get higher quality products.
    1.After mold closed, the rubber filling inside mold cavity by injection pressure,less overflow rubber on the parting line of molds;
    2. To help the insulators demould, demoulding frame will be added on the mold, which cooperated with machine lower supporter/bottom lifter. It can make the molded insulators seperate from mold cavity automatically.
    3. For long rod insulators mold, to avoid any movements of FRP rods inside the mold cavity during mold clamping, a special locating fixtures will be added on the molds. The fixtures wil fix the FRP rods or inserts inside mold cavity before clamping and released/hide itself after clamping, So that the thickness of insulator's rubber layer will be more balancing. Huayi Rubber Machinery provide the hydraulic power for driving the fixtures by cylinders.

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