Rubber Mixing Mill
Optimize rubber processing with Crowns Machinery’s Rubber Mixing Mill. Cutting-edge technology for precision mixing, ensuring top-quality rubber products
Rubber Mixing Mill For Sale
Rubber Mixing Mill, also known as open double-roll refiners, are specialised in mixing rubber compounds in the rubber and plastics processing industry, and play a vital role in the production of a wide range of rubber products. Its main purpose is to mix different components together to produce rubber compounds with consistent physical and chemical properties, which are used to prepare various rubber products such as tyres and seals.
rubber mixing machine are mainly composed of machine base, frame, rollers, transmission system, lubrication device, heating and cooling device, roll gap adjustment device, safety braking device, motor, speed reducer and so on. The equipment has various sizes and configurations, which can be selected according to the actual production requirements.
Parameters
| Type | XK-160 | XK-250 | XK-300 |
|---|---|---|---|
| roller diameter | 160mm | 250mm | 300mm |
| roller length | 280mm | 620mm | 300mm |
| front roll linear speed | 11.24 m/min | 14.4 m/min | 15.1 m/min |
| friction ratio of rollers | 01:01.4 | 01:01.2 | 01:01.3 |
| Max gap | 8mm | 8mm | 8mm |
| motor | 7.5 kw | 18.5 kw | 22 kw |
| batch capacity | 1-2 kg | 10-15 kg | 15-20 kg |
| machine size | 1080*796*1415mm | 3400*1500*1500mm | 3580*1550*1695mm |
| machine weight | 1100 kg | 3500kg | 5200 kg |
| model | XK-400 | XM-450 | XK-560 |
| roller diameter | 400mm | 450mm | 560mm |
| roller length | 1000mm | 1200mm | 1530mm |
| front roller linear speed | 16.5m /min | 18.65 m/min | 24.5m/min |
| friction ratio of rollers | 01:01.3 | 01:01.3 | 01:01.2 |
| Max gap | 10mm | 15mm | 20mm |
| motor | 37 kw | 55 kw | 75 kw |
| batch capacity | 18-35 kg | 25-50 kg | 50-65 kg |
| machine size | 4250*1850*1870mm | 5200*2380*1700mm | 6120*2282*2000mm |
| machine weight | 7600kg | 13000 kg | 22000 kg |
Open rubber mixer Working Principle
The Rubber Mixing Mill is equipped with two parallel rollers rotating relative to each other, and the rubber mixture is placed in the gap between the two rollers. The rollers squeeze and shear the rubber raw material by rotating in the opposite direction, which breaks the macromolecule chain of the rubber inside, and makes the various components and additives in the mixture mix evenly.
The rubber sheet is discharged from the gap between the rollers, and then wrapped in one of the rollers due to the difference in surface temperature and speed of the two rollers, and then returned to the two rollers, and so on, thus completing the refining process. In openers used for continuous operation, the rubber raw material is continuously added from one end of the rollers, passed through the rollers several times in accordance with the time required by the refining process, and the required rubber strip is continuously cut from the other end of the rollers.
Application Fields
- Plasticising, mixing, pressing and crushing of raw rubber.
- Mixing, flaking and removal of impurities from rubber.
- Hot mixing and supplying of mixed rubber.
- Crushing, mixing and pressing of recycled rubber.
- Recycling and processing of waste rubber materials.
- Widely used in plastic processing and paint and pigment industrial production.
rubber mixing machine advantages
High-quality materials:The rollers of Rubber mixing machine are made of vanadium and titanium metal alloy cold hard cast iron, with hard and wear-resistant surface; the transmission system adopts hardened gear reducer, with compact structure, high transmission efficiency, low noise and long service life.
Leading technology: our rubber mixing mill adopts the most advanced technology and production process to ensure efficient performance and help reduce maintenance and repair costs.
Energy saving and environmental protection: our equipment adopts energy-saving design, focuses on environmental protection, reduces energy consumption and waste emissions, greatly reduces operating costs and meets the industry’s environmental requirements.
High safety performance: Mixing mill is equipped with an overload protection device, which can prevent damage to the main components; at the same time, it is equipped with an emergency braking device, once an emergency occurs, you can pull the safety lever and the equipment will stop running immediately, which is safe and reliable.
Product customisation service: we have a professional design and production team, customers can come to the drawing to customize, at the same time, our team can also according to customer needs, tailor-made for the customer a perfect set of production solutions.
Worry-free after-sales service: We have a professional after-sales service team to provide customers with comprehensive after-sales service and support, including training, spare parts supply, maintenance services, etc., to ensure that customers get a satisfactory experience after purchase.
Safety & Reliability
Rubber Mixing Mill operation process involves high temperature, high pressure, mechanical movement and other factors, so in order to ensure its safety and reliability, our equipment to do:
Equipped with safety guards: The Mixing Mill is equipped with safety guards, which can quickly cut off the power supply in case of emergency to avoid accidents.
Equipped with monitoring system: the equipment is equipped with monitoring system, which can monitor the temperature, pressure, current and other parameters in real time.
Conform to industry standards: our equipment conforms to national safety standards and regulations.
Factory Inspection: Our equipment has gone through strict pre-shipment inspection procedures to ensure that the quality is qualified, safe and reliable.
Customer Use Safety Recommendations
Regular equipment inspection and maintenance, including electrical system, transmission system, etc.
Mixing Mill training to understand the working principle of the equipment, operation, and emergency procedures.
Follow safety procedures: Operators must follow the opener’s use and maintenance manual to operate the equipment.
FAQ
How is the rubber compound mixed?
The raw rubber material and the required additives are loaded into the feed zone of the opener. As the rollers rotate, the rubber compound is pinched between the two rollers to be squeezed and sheared, and as the rubber compound softens, it begins to move between the two rollers in a circular motion, and after a number of squeezes, the compound and the additives are homogeneously mixed and dispersed. After mixing, the rubber mixture is in the form of continuous belt, sheet or other specific shapes as required, and will be unloaded through the discharge device of the opener.
What is the friction ratio of a Rubber Mixing Mill?
The friction ratio of a rubber opener, also known as the coefficient of friction, is the ratio of the friction between two rollers rotating in opposite directions to the friction between the rubber mixtures. This parameter is critical as it directly affects mix quality and process control.
A higher friction ratio promotes heating and mixing of the rubber compound, but also increases energy consumption and rubber wear. Lower friction ratios require more time to achieve the desired mixing effect. Different rubber production processes require different friction ratios.
Factors that affect the size of the friction ratio of a rubber opener include:
Friction coefficient of the roll surface: the treatment of the roll surface and lubrication measures will affect the friction ratio.
The gap between the rollers: the gap between the rollers can be adjusted, the gap can be adjusted to reduce the friction, the gap can be adjusted to increase the friction.
The rotation speed of the rollers: high rotation speed friction.
What are the main disadvantages of mill mixing?
- Dust flying, easy to cause environmental pollution.
- Occupy human resources, worker operation, physical exertion.
- Complex operation, need experienced operators to carefully control the parameters, improper operation will lead to uneven mixing.
- Friction heating, resulting in heating up the rubber mixture, the temperature is too high rubber may undergo irreversible changes.
What is the nip of a 2-roll Mixing Mill?
The nip of a Rubber mixing machine is the area of tight clearance between two oppositely rotating rollers, where the rubber compound is pinched, squeezed, sheared and fricted many times to achieve the required mixing quality, so this is a critical area for mixing rubber.
The operator can control the mixing process in the nip by adjusting the gap between the rollers, the rotational speed of the stick and the mixing time to achieve satisfactory mixing results.
