Down Press Rubber Compression Molding Machine_Rubber Press Machine

A down press rubber compression molding machine, also known as a down stroke rubber compression molding machine, is a specialized equipment used in the rubber industry for the manufacturing of

rubber products through compression molding. It is commonly used for the production of rubber parts, such as gaskets, seals, O-rings, and automotive components.

Here are the key features and components of a down press rubber compression molding machine:

1. Downward Pressing Mechanism: The machine is equipped with a down press mechanism that applies pressure to the rubber material in the mold. This mechanism can be hydraulic or mechanical, and

it compresses the rubber material to shape and cure it into the desired form.

2. Mold Assembly: The machine has a mold assembly that consists of a top mold and a bottom mold. These molds are typically made of high-quality steel and are designed to withstand the pressure and heat

of the compression molding process. They have cavities and shapes that define the final shape of the rubber product.

3. Heating System: The machine includes a heating system to raise the temperature of the mold during the molding process. This helps to soften the rubber material and facilitate its flow and consolidation within

the mold cavity. The heating system can use electric heaters or thermal oil to provide the necessary heat.

4. Control System: A down press rubber compression molding machine is equipped with a control system that allows operators to set and monitor various parameters, such as temperature, pressure, and curing time.

This system ensures precise control over the molding process and helps achieve consistent and high-quality results.

5. Safety Features: The machine incorporates safety features to protect operators and prevent accidents during operation. These features may include safety guards, emergency stop buttons, and safety interlocks to

ensure safe and reliable operation.

Down press rubber compression molding machines offer several advantages in rubber manufacturing. They allow for efficient and precise molding of rubber parts with complex shapes and intricate details.

The compression molding process ensures excellent dimensional accuracy, high productivity, and consistent quality. Additionally, the machines can accommodate various types of rubber materials,

including natural rubber, synthetic rubber, and elastomers, making them versatile for a wide range of rubber product manufacturing applications.

Common Models, if you need other models or have other special technical requirements on size, pressure, working layer number, please just contact us.

Model	3003002	3503502	4004002	5005002	6006002	7508502	6006002
Nominal Mold Clamping Force（MN）	0.25	0.25	0.5	0.8	1	1.6	2
Heating Platen Size(mm)	300*300	350*350	400*400	500*500	600*600	750*850	600*600
Working Layer	2	2	2	2	2	2	2
Piston Diameter(mm)	ø150	ø150	ø200	ø250	ø300	ø360	ø400
Piston Stroke（mm）	250	250	250	250	250	500	300
Daylight/ Platen Spacing（mm）	125	125	125	125	125	250	150
Unit Area Pressure（Mpa）	2.78	2.1	3.1	3.2	2.78	2.5	5.6
Main Motor Power（KW）	2	2.2	2.2	2.2	2.2	3.0	3.0
Dimension（L×W×H)mm	15004001350	15004001350	18005001600	18005501700	20007001700	200010001900	25509602100
Weight（KG）	950	1000	1500	2000	2600	4300	5000
Mold Closing Speed（mm/s)	≥12	≥12	≥12	≥12	≥12	≥12	≥12
Mold Opening Speed（mm/s）	≥12	≥12	≥12	≥12	≥12	≥12	≥12

Detail Images of PLC control rubber vulcanizing press machine:

Control Panel

we design different type control panel according to machine needs or customers' requirements, here just put a few for your reference.

Control Box

Mainly there are two kinds of electronics for choice. 1. China domestic made: CHNT or Delixi

2. imported international famous brand: Siemens, Schneider, Omron, Abb, etc.

Oil Cylinder and Piston of my company's rubber vulcanizing press machine:

Oil cylinder adopts QT500-7 ductile iron, called FCD50 in Japan, and for some huge size machines, we adopt cast steel oil cylinder;

piston adopts chilled hard alloy cast iron; seal adopt imported international quality sealing ring and dustproof ring, to ensure long working life.

Main parts of our rubber vulcanizing press machine, all adopts casted ductile iron or cast steel, which has good stability, don't deformation.

The piston of our rubber vulcanizing press machine adopts cold/chilled hard cast iron

1、Basic knowledge of cold hard cast iron

Cold hard cast iron is a casting alloy material that is based on elements such as iron, carbon, and silicon. By adding alloying elements such as chromium, molybdenum, and vanadium, and through casting and heat treatment processes, it achieves excellent hardness and wear resistance. Its hardness and wear resistance far exceed those of ordinary cast iron and gray iron, and it also has high strength and toughness, which has been widely used in the industrial field.

2、 The Hardness Characteristics of Cold Hardened Cast Iron

The hardness of cold hard cast iron is mainly achieved through heat treatment and chemical composition control. Compared to other casting materials, its hardness is extremely high, usually between 60-65 HRC, while the hardness of steel is only between 50-55 HRC.

3、 The manufacturing process of cold hard cast iron

The manufacturing process of cold hard cast iron mainly includes two processes: casting and heat treatment. During the casting process, control the chemical composition ratio in the as cast state to ensure the ratio of ferrite and pearlite; During the heat treatment process, magnesium spheroidization is subjected to high-temperature treatment, followed by quenching and tempering to obtain excellent hardness and toughness.

4、 The Application Prospects of Cold Hardened Cast Iron

Due to its excellent properties such as hardness and wear resistance, cold cast iron is widely used in manufacturing mechanical parts and tools under high load and high wear working environments. In the field of engineering machinery, some key components have also begun to use cold cast iron materials to improve the service life and safety performance of machinery.

Valves

Qingdao Steady Machinery Co.,Ltd. adopts international famous brand solenoid valves for it's rubber vulcanizing press machine.

Which works accurately and has a long service life.

Motor

We adopts China famous brand motor or imported brand motor if customers' have special demand.

The brand of motor we choose uses high-quality copper wire for coils and wiring, which has excellent conductivity.

Copper wire motors 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.

Good parts ensures good machine quality, but it need plus a good design.

Our engineer service team provide in time design according to customers work needs or special requirements: