Heavy Duty Open Mixing Mill for Premixing (Xk-660)

Product Description
Production Name: Heavy Duty Open Mixing Mill for Premixing XK-660
Model: XK-660
Typical Applications:
 1. Automobile, motorcycle and bicycle tires and tubes.
 2. Rubber shoes, soles and heels.
 3. Rubber rafts, P.V.C sheet, artificial leather.
 4.Rubber/EVA sponge soles.
 5. Rubber rain boots and rain wear.
 6. Rubber nipples, sports balls.
 7. Rubber rollers, rice rollers.
 8. Rubber goods for industry.
 9. Rubber goods for automobiles.
 10. V-belt and conveyor belts.
 11. Rubber cushions.
 12. Regenerating rubber.

The mixing process is typically carried out on a two-roll mill (open mill). This machine consists of two horizontally placed hollow metal cylinders (rolls) that rotate towards each other. The gap between the rolls can be adjusted, usually ranging from 2 to 20 mm. This allows for efficient mixing and processing of various rubber compounds.

Rolls Friction Ratio
The two rolls operate at different speeds, with the back roll rotating faster than the front one. This difference in speed, known as the friction ratio, creates a shearing action at the nip, which helps disperse the ingredients and keep the compound on the front roll. A common friction ratio is 1.25:1.
Mastication Operation
To begin, set the roll gap to 2 mm and maintain the roll temperature at 70 ± 5°C. Add the rubber into the mill’s nip and form it into a continuous sheet on the front roll. Using a hand knife, make two ¾-cuts from each side, allowing the rubber to pass through the nip several times until a smooth rolling bank is formed. This process ensures proper mastication, making the rubber softer and less viscous.
Initial Addition of Ingredients
Adjust the nip opening to 2.5 mm. Add activators (and antidegradants if using synthetic rubber) to the rolling bank. Make two ¾-cuts from each side, then cut through the rubber at one end, remove it, and place it in the nip at the other end to ensure a uniform blend.

Key Features
1. Excellent mixing performance.
2. Low operating costs and high productivity.
3. Compact design for optimal floor space utilization.
4. Latest technology to meet global standards.
5. Maintenance-free operation.
6. Reliable and experienced technical support.
7. Easy installation and quick start-up.
8. No need for continuous lubrication, reducing maintenance costs and wear.
9. Auto-reversing electric control panel.
10. Simple and easy maintenance.


Technical Specifications

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 Services Commitment 
1. Our engineers can design custom machines based on your requirements and send drawings for confirmation.
 2. Throughout production, we will take photos and send them to you for tracking.
3. After delivery, we provide documents such as packing list, commercial invoice, and bill of lading.
4. We offer free English foundation DWG, installation drawing, user guide, maintenance manual, and part drawing.
 5. We provide overseas technical support.
 6. Test the machine before delivery — just connect the wires to the outside of the control cabinet.
 
FAQ 
1. How long does it take to deliver the rubber machines? 
This is a custom-designed machine according to your specific needs. From engineering design to completion, it typically takes 25 to 35 days.
 
2. What quality control measures do you have in place?
We emphasize quality control throughout the entire production process. Every machine is fully assembled and thoroughly tested before shipment.
 
3. What is the warranty period for the machine?
The warranty is one year. We use world-renowned brand components to ensure the machine operates perfectly.
 
4. Can you provide overseas installation and commissioning? How long does it take?
Yes, we can offer overseas service and technical support, but the customer must cover the installation costs. Small machines usually take 2–3 days, while large plants may take about 30 days.
 
5. How can I trust that you’ll deliver the correct machine as ordered? 
We guarantee to deliver a high-quality machine as discussed and confirmed in the order. Our company culture focuses on innovation, quality, integrity, and efficiency. We have worked with many international rubber manufacturers. If you visit our factory, we can show you examples of our clients.
 
6. How can I reach your factory?  
We are located in Qingdao City, Shandong Province, China. The nearest airport is Qingdao Liuting Airport. We can pick you up at the airport.

Our Packaging

Cnc Machining

RongNa has more than 10 years experience manufacturing custom machining and precision parts for diverse regional and national partners. Our working team uses the latest in CNC machining machine
We offer advanced 5-axis and 3-axis machining services that significantly increase the range of possibilities for working with complex surfaces and creating parts in numerous shapes and sizes. We provide custom Cnc Milling service and 3-axis, 5-axis CNC milling parts

How Does 5-axis CNC MILLING WORK?

Milling is the process of cutting and drilling material using a rotating cylindrical tool. This tool is held in a spindle and comes in a variety of sizes and forms. With 5-axis machining, there have two extra rotary axes defined by A, which rotates around the X axis, B, which rotates around the Y axis, and C, which rotates around the Z axis. The combination of additional axes depends on the machine and comes in variations, including AB, AC, or BC.
With 5-axis machining, the table or cutting tool can be tilted, creating the ability to avoid collision with the tool holder and allowing for better access to part geometry. This also ensures improved tool life and cycle time as it helps maintain cutting position and constant chip load. This type of machining offers a push toward single-setup machining, creating shorter lead times and increasing efficiency.
CNC milling is complex machining technique which utilizes several types of pre-programmed CAM and CNC controls to build customized components or parts. We are professional custom CNC milling company and 5 Axis CNC Milling Service provider in China, we offer the manufacturing of precision machined parts and solutions at affordable rates to meet the growing demands of the clients across the world.

We have several machining centers for creating complicated shapes or parts for your products. Contact for more.

Cnc Machining,Custom Cnc Machining,Cnc Machining Service,Cnc Metal Machining

Ningbo Rongna Technology Co.,Ltd , https://www.prototyping-machining.com