Home > Products > Rubber Extruder > Cold Feed Rubber Extruder > Common Cold Feed Rubber Strip Hose Pipe Profile Sheet Extruder Machine
Rubber extruder and its auxiliary equipment are one of the most widely used important equipment in the rubber industry. It is mainly used for extrusion molding of tread, inner tube, rubber strip, rubber hose, tape, and other rubber products. It has excellent characteristics such as energy saving, high yield, good plasticization, and low-temperature rubber refining, which expands the application range of the extruder and becomes a new generation of high-efficiency rubber processing equipment.
Rubber extruder equipment is widely used in the manufacturing of semi-finished products such as pure rubber hoses, tire tread, inner and outer layers of rubber hoses, and wires and cables. It can also be used for the plasticization of raw rubber, filtering of rubber materials, metal wire coating, and so on.
From the perspective of equipment structure, cold feed extruders generally have a longer screw and barrel compared to hot feed extruders, with a length to diameter ratio (L/D) of 8-20 and shallow thread grooves. Due to the long body, multiple functions, and low feed temperature, their power is much larger than that of hot feed extruders, which is about 2-4 times that of hot feed extruders of the same specifications. The emergence of cold feed extruders simplifies the production process, and the fed rubber no longer needs to be hot melted. The rubber can be fed into the extruder at room temperature to obtain various shapes of product rubber preforms. It can completely replace hot feed extruders and save the rubber hot melting process, simplifying the production process. It can establish higher pressure on the machine head, which has a certain effect on improving the quality of extruded products, Therefore, it has been widely used in the production of certain products.
The screw of the cold feed exhaust extruder is divided into feeding section, compression section, throttling section, exhaust section, and extrusion section. The throttling section adopts shallow groove equidistant and deep threads, which can achieve high shear and stable conveying process of the rubber material, and also improve the exhaust effect. In the cold feed screw extruder, room temperature rubber strips are added to the extruder. Rubber extruders are often classified according to whether they are used for exhaust.
Cold feed rubber extruding machine models:
| MODEL | XJD-50 | XJD-65 | XJD-75 | XJD-90 | XJD-120 | XJD-150 | XJD-200 | XJD-250 |
| SCREW DIAMETER(mm) | Ф50 | Ф65 | Ф75 | Ф90 | Ф90 | Ф150 | Ф200 | Ф250 |
| SCREW L/D RATIO | 12:1 or 14:1 | 12:1 or 14:1 | 12:1 or 14:1 | 12:1 14:1 or 16:1 | 14:1 or 16:1 | 14:1 or 16:1 | 18:01 | 12:01 |
| SCREW ROTATION SPEED(r/min) | 7-73 | 6.7-70 | 6-60 | 6.7-60 | 5-50 | 5-44 | 5-33 | 5-23 |
| MAX. PRODUCTION CAPACITY(kg/h) | 60 | 120 | 180 | 350 | 1000 | 1800 | 2600 | 3000 |
| POWER(kw) | 11 | 22 | 37 | 55 | 110 | 135 | 250 | 315 |
| REDUCER | hardened reducer (square box shape) | hardened reducer (square box shape) | hardened reducer (square box shape) | hardened reducer (square box shape) | hardened reducer (square box shape) | hardened reducer (square box shape) | hardened reducer (square box shape) | hardened reducer (square box shape) |
| MACHINE WEIGHT(T) | 1.1 | 1.65 | 1.8 | 2.5 | 5 | 6.5 | 9.8 | 15 |
| Dimension(L×W×H）mm | 1550×1050 ×1500 | 1900×800 ×1500 | 2340×1150 ×1250 | 2300×1150 ×1400 | 3500×1450 ×1700 | 5200×1650 ×1600 | 7150×1950 ×2300 | 8500×2450 ×2600 |
DETAIL IMAGES
Control Box
Qingdao Steady Machinery's extruder adopts famous brand electronics, works accurate and stable
Barrel and Screws
Our Screw & Barrel Advantage is as below, ensures our machine 1.5 times more durable than other machines
The material is: 38CrMOALA
Temper Degree：HB240°～280°
Nitriding Hardness：HV850°～1000°
Nitriding Deepness：0.45～0.7mm
Nitriding Brittleness：≤Grade Ⅱ
Surface Roughness：Ra0.4
Screw Straightness：0.015mm
Hard Chrome Plating after Nitriding：≥900HV
Chrome Thickness：0.05～0.10mm
Two-phase Alloys：HRC56°～65°（nickel-base alloy）
Alloy Deepness：1.5～2.0mm
Screw and barrel processing:
Machine Head
high quality steel, high precision machining
Mold
High quality extruding mold ensures high quality rubber products
Loading Into Container Export
① The machine head should be assembled together and installed as a whole on the extruder.
② Before assembling the machine head, the grease applied during storage should be wiped off, and the surface of the mold cavity should be carefully checked for scratches, scratches, and rust spots. Necessary polishing should be carried out, and then a layer of silicone oil should be applied to the surface of the flow channel.
③ Assemble the various plates of the machine head in sequence, apply high-temperature grease to the threads of the bolts, and then tighten the bolts and flange.
④ Place the porous plate between the machine head flanges to ensure that it is tightly pressed without overflowing.
⑤ Before tightening the fastening bolts of the connecting flange between the machine head and the extruder, the horizontal position of the mouth mold should be adjusted. The square machine head can be horizontally adjusted, while the circular machine head should be leveled with the bottom surface of the machine head mouth mold based on the fixed model adhesive surface.
⑥ Tighten the connecting flange bolts, tighten the machine head fastening bolts, install the heating ring and thermocouple, and ensure that the heating ring is tightly attached to the outer surface of the machine head.
⑦ Install the set sleeve and adjust it in place. Check if the center line of the host, set sleeve, and traction machine is aligned. After adjustment, tighten the fixing bolts. Connect all water pipes and vacuum pipes of the set sleeve.
⑧ Turn on the heating power and evenly heat the machine head and machine casing. At the same time, open the cooling water at the bottom of the feeding hopper and the gearbox, as well as the inlet valve of the exhaust vacuum pump. When heating, adjust the temperature of each section to 140 ℃ first, and hold it for 30-40 minutes when the temperature rises to 140 ℃. Then, raise the temperature to the normal production temperature.
Ø1. Will your machine meet our voltage， can we use your machine in our country?
Yes, we can customize every aspect of the machine according to customers’ work needs, Voltage,
Electricity frequency, clamping force, (heating )platen size, daylight, piston travel, working layer number, with sliding platen or not, assist cylinder, Control method, automatization level, PLC or not, etc,
Ø 2. Guarantee?
For the whole machine, not less than 2 years quality guarantee, and life long technical service whenever it’s needed.
Ø 3. Will the machine be kept well while on the sea journey?
Yes, for small size or single set machine, we use good quality fumigation free ply wood making strong packing for them.
For big size machine or multi sets small size machine, after proper treatment, we fixed them in the container so that the machine won’t get rust or damage in the sea voyage.
Ø 4. Whats’ the payment method?
There are TT, L/C, Credit Card, Western Union, Paypal, Alipay etc.
Ø5. What’s the shipping method?
Our rubber machines are most often shipped by sea, but for land-locked state, there are train or truck transportation. Or there are joint transportation between land and water.
When it come to small pare parts, it’s by international courier by air.
Look forward to hearing from you
Welcome friends and customers at home and abroad to cooperate sincerely and create brilliance together!
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