Application of Cold Feed Vacuum Pin Barrel Rubber Extruder

Cold feed vacuum pin barrel rubber extruder is often used in the production of high viscosity rubber, such as tires, sealing rings, rubber tubes, films, etc. The extrusion method can ensure a smooth surface, stable performance, and high product quality of the product. In production, multiple colors and reinforcing agents can be added as needed to meet the requirements of different customers. In addition, the equipment also has the advantages of high production efficiency, easy operation and maintenance, and is widely used in the rubber product manufacturing industry.

The principle of cold feeding vacuum pin barrel rubber extruder

Cold feed vacuum pin barrel rubber extruder is a commonly used equipment in the manufacturing of rubber products. The main principle is to feed rubber raw materials into the barrel through the feeding port, and then through high-speed cutting and extrusion in the barrel, the rubber raw materials are shaped into the desired shape through the mouth mold. In this process, use a vacuum pump to extract excess gas and water. The  pins function is for even the extrusion and strengthen the extrusion pressure.

The development trend of cold feed vacuum pin barrel rubber extruder

With the constantly changing market demand, rubber products are also constantly being updated and replaced. The cold feed vacuum pin barrel rubber extruder has developed with this trend. In the future, the development direction of this device may become more intelligent and automated. For example, in terms of control systems, artificial intelligence technology may be introduced to better monitor and control the production process. In addition, the production of certain products requires higher precision and efficiency, so the technology of cold feed vacuum pin barrel rubber extruder will be further improved to meet market demand.

1、 Why some products need to vacuum

Extruder is a commonly used rubber molding machine, usually used in the production of rubber pipes, plates, sheets, bars, etc. In the production process, the extruder needs to heat the rubber material to a certain temperature before extrusion molding. In this process, vacuuming, as a key link, has the following functions:

1. Remove bubbles and moisture. When heating and extruding rubber materials, they may contain some air or moisture. If vacuum treatment is not carried out, bubbles will form during the extrusion process, affecting the quality of the molding; At the same time, moisture can also cause bubbles to protrude when the rubber surface melts, resulting in defects and affecting product quality. Therefore, vacuuming can effectively remove these bubbles and moisture.

2. Accelerate the melting of rubber materials. During the heating and extrusion process, vacuuming can accelerate the melting of rubber materials, thereby improving production efficiency.

3. Avoid reactions. Some rubber materials may undergo chemical reactions themselves, and if vacuum treatment is not carried out during the extrusion process, adverse chemical reactions may occur, thereby affecting the quality of the molding. Vacuuming can effectively prevent this situation from occurring.

2、 The method of vacuuming

In the production process of extruders, two methods are generally used for vacuum pumping:

1. Pre vacuum method. Install a vacuum pump at the front of the extruder to vacuum the rubber raw materials before entering the extruder.

2. Post vacuum method. Install a vacuum pump at the rear of the extruder to vacuum the already extruded rubber material.

Different vacuum pumping methods are suitable for different extruder production situations, and the appropriate method should be selected according to the actual situation.

3、 Precautions

During the production process of the extruder, the following precautions should also be taken when vacuuming:

1. The vacuum degree should be controlled within a certain range, whether it is too high or too low will affect the forming quality.

2. Pay attention to maintenance and upkeep when using a vacuum pump.

3. Strictly control the production temperature and do not let the materials overheat.

4. Regularly inspect the vacuum system, clean and replace damaged components in a timely manner.

In summary, vacuum pumping is an important part of vacuum type rubber extruder production process, which plays a role in removing bubbles and moisture, accelerating the melting of rubber materials, avoiding reactions, and thereby improving product quality and production efficiency. But vacuum pumping also requires precautions to ensure production quality and safety.

Machine head of Cold Feed Vacuum Pin Barrel Rubber Extruder:

Mold of Pin Barrel Cold Feed Rubber Extruder

T-head of  Cold Feed Vacuum Pin Barrel Rubber Extruder:

Tire Tread Head of Cold Feed Vacuum Pin Barrel Rubber Extruder:

Various type pins(hardness HRC50-55) of Cold Feed Vacuum Pin Barrel Rubber Extruder:

Advantage of Qingdao Steady Machine's Vacuum Pin Barrel Cold Feed Rubber Extruder:

Our Screw & Barrel Advantage is as below, ensures our machine is 1.5 ~2 times more durable than other supplier's extruder 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

Control Panel, which is movable on extruder machine, so it's easy for worker to operate in any position around our extruder machine,

and we can put your language beside the buttons. 

Control Box, our rubber extruding machine use high quality electronics, ensures the machine working sensitive and reliable. 

The speed adjustment is very smooth and stepless. 

Motor, according to machine model and work, there are AC motor and DC motor two kinds to our rubber extruding machine. 

Our extruder machine adopts copper wire motor, which have good conductivity, low resistivity, and can achieve larger output power at smaller currents, thereby reducing electrical energy loss. Good corrosion resistance. 

Copper wire motors are less prone to rusting and have a longer service life.

Excellent reliability. The connection points and joints of copper wire motors are easy to solder and connect, thus having higher reliability.

More durable.

The durability of copper wire motors is better than that of aluminum wire motors, because aluminum wire has a higher resistance than copper wire and generates higher heat during use, which can easily burn out the motor.

More energy-efficient, copper wire motors have a smaller resistance and lower heat generation, making them more energy-efficient.

More silent, copper wire motors used in our rubber vulcanizing press machine have less noise because aluminum wire motors have a noise level approximately 7 decibels higher than copper wire motors.

Mold, good parts makes good machine, but it also need a good design. We are just the maker which can provide you a perfect proposal according to your detail work needs. 

Drawing just for Reference, if you want us make extruding mold for you, please send us your drawings or samples.

Normal Models (Pin Barrel Vacuum Cold Feed Rubber Extruder) for Choice:

The equipment models and production processes used in the production of different rubber products are also different. For example, the type of extruder used in the production of rubber sealing strips and rubber pipes also maybe different. Some rubber products require vacuum pumping during production, while others require the use of pin type rubber extruders during production. In addition, some products belong to single extrusion products, while others require the use of composite rubber extruders for extrusion production. The molding equipment and auxiliary equipment used in the production of different rubber products need to be selected based on the actual needs of the products.

Extruded Rubber Products Picture for reference:

Just contact and tell us your work needs, we can customize the machine and mold according to your work needs.

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Just contact and tell us your work needs, we'll provide you a suitable proposal, high quality pin barrel cold feed vacuum rubber extruder with most reasonable price.