5-Layer Electric Heating Jaw Hydraulic Molding Machine Use For Tire Tread Manufacturing

Vulcanizing machine press introduction:

I.Structure and Components
1. Curing Chamber: This is the core part of the 5-layer tread vulcanizer. There are multiple layers of molds for placing the tread in the curing chamber. It is generally made of high-strength metal materials and can withstand the high temperature and high pressure during the vulcanization process. The size of the curing chamber is designed according to the size and number of layers of the tread to ensure that each layer of the tread can complete the vulcanization reaction in a suitable space.
2. Heating system: usually steam, hot plate or electric heating. For steam heating, there is a special steam pipe connected to the heating plate of the vulcanizer, and the heat of the steam is transferred to the mold and tread. Hot plate heating uses internal heating elements, such as resistance wires, to increase the temperature of the hot plate and then transfer the heat to the tread. The electric heating method has the characteristics of fast heating speed and precise temperature control. The temperature is accurately controlled by installing electric thermocouples in the mold or heating plate.
3. Pressure system: including hydraulic system or mechanical pressure system. The hydraulic system transports hydraulic oil to the hydraulic cylinder through a hydraulic pump to generate sufficient pressure on the tread. The mechanical pressure system uses mechanical transmission mechanisms, such as screws, nuts, etc., to convert the rotational motion of the motor into linear motion, thereby applying pressure to the tread. The size of the pressure can be adjusted according to the material and process requirements of the tread, generally between a few MPa and tens of MPa.
4. Control system: This is the key part to ensure the normal operation of the vulcanizer. It can be an automated control system based on PLC (Programmable Logic Controller) or a simple electrical control system. The control system can accurately control parameters such as vulcanization time, temperature and pressure. The operator can enter parameters through the control panel, such as vulcanization time can be accurate to seconds, temperature can be accurate to degrees Celsius, and pressure can be accurate to MPa. During the vulcanization process, the control system monitors these parameters in real time and adjusts them according to the set values.

II. Working principle
First, the unvulcanized tread is placed in the multi-layer mold of the vulcanizer. When the vulcanizer is started, the heating system starts to work, raising the temperature in the vulcanization chamber to the temperature required for tread vulcanization, which is generally between 140-180℃, depending on the formula of the tread rubber. At the same time, the pressure system also starts to apply pressure, which will act evenly on each layer of the tread mold, usually in the range of 2-10MPa.
Under the appropriate temperature and pressure, the rubber molecules in the tread react chemically with the vulcanizer, a process called vulcanization. The vulcanization process cross-links the molecular chains of the rubber, thereby changing the physical and chemical properties of the rubber, such as improving the hardness, wear resistance and elasticity of the rubber. The vulcanization time varies depending on factors such as the thickness of the tread and the rubber formula, and generally takes a few minutes to tens of minutes. For example, for thicker treads and rubber formulas containing special additives, the vulcanization time may be longer.
After the vulcanization is completed, the pressure system and the heating system will gradually stop working, the temperature of the vulcanization chamber will decrease, and the pressure will be released. Then the vulcanized treads can be taken out, and these treads can be used for tire production or assembly of other rubber products.

III.Application advantages
1. Improve production efficiency: The 5-layer tread vulcanizer can vulcanize 5 layers of tread at the same time, which greatly improves production efficiency compared to the single-layer vulcanizer. In industries that require a large amount of treads, such as tire manufacturing, it is possible to quickly provide vulcanized treads to meet the needs of the production line.
Ensure product quality consistency: Since multiple layers of treads are vulcanized simultaneously in the same vulcanizer, under the same temperature, pressure, time and other parameter control, the quality of each layer of tread can be guaranteed to be relatively consistent. In this way, in subsequent processes such as tire assembly, product quality problems caused by differences in tread quality can be reduced.
2. Save space and energy: Compared with the use of multiple single-layer vulcanizers, the 5-layer tread vulcanizer occupies less space. Moreover, during the heating process, since the overall structure of the vulcanization chamber is relatively compact and the heat loss is relatively small, energy can be saved to a certain extent.


Technical Parameters:

5 - Layer Tire Tread Curing Press Product Manual:

1. Safety Precautions

• Before operating the curing press, it is essential that the operators have received professional training and are familiar with the operating procedures and safety precautions of the equipment.
• Regularly inspect the electrical system, hydraulic system, heating system, etc. of the equipment to ensure that all components are operating normally. In case of any malfunction, repair it promptly.
• During operation, it is strictly prohibited to touch any moving parts such as hot plates and hydraulic cylinders with any part of the body to avoid accidents such as scalds or pinch injuries.
• During the heating and pressurizing process of the curing press, closely monitor the operating status of the equipment. If any abnormality is detected, immediately stop the operation and take appropriate measures.

2. Equipment Overview

3. Equipment Structure

• Frame: It is welded with high - quality steel and has sufficient strength and rigidity to withstand the pressure and weight during the vulcanization process.
• Hot Plate: The hot plate is one of the key components of the curing press. It is made of high - quality alloy steel plates and the surface is specially treated, providing good thermal conductivity and wear - resistance. The heating elements are installed inside the hot plate, and heat can be transferred to the rubber of the tire tread through steam, heat - transfer oil, or electric heating.
• Hydraulic Cylinder: The hydraulic cylinder is the component that provides the vulcanization pressure. It is made of high - strength steel with good sealing performance to ensure the stability and reliability of the pressure.
• Control System: The control system adopts PLC control, enabling automated operation and precise control. Operators can set vulcanization process parameters such as temperature, pressure, and time through the touch - screen. The system will automatically control the vulcanization process according to the set parameters.

4. Operation Method

5.1 Preparation

• Check whether all components of the equipment are normal, including hot plates, hydraulic cylinders, electrical system, hydraulic system, temperature - control system, etc.
• Prepare the rubber tire treads and molds to be vulcanized and ensure that the dimensions and specifications of the tire treads and molds match the curing press.
• Set the temperature, pressure, time, and other parameters of the curing press according to the vulcanization process requirements of the rubber tire treads.

5.2 Mold Installation

• Install the molds on the hot plates of the curing press and ensure that the molds are firmly installed and accurately positioned.
• Place the rubber tire treads in the molds and pay attention to the correct placement position and direction of the tire treads.

5.3 Vulcanization Process

• Start the hydraulic system and heating system of the curing press and carry out the temperature - rising and pressurizing operations according to the set parameters. During the temperature - rising process, closely monitor the temperature change to ensure a smooth and even temperature rise.
• When the temperature and pressure reach the set values, the curing press enters the constant - temperature and constant - pressure vulcanization stage. During this stage, the operator should regularly check the operating status of the equipment to ensure that parameters such as temperature, pressure, and time remain stable.
• After the vulcanization time is over, the curing press automatically stops heating and pressurizing and enters the cooling stage. During the cooling process, ensure good ventilation of the equipment to accelerate the cooling speed of the tire treads.

5.4 Demolding

• When the tire treads have cooled to room temperature, open the molds of the curing press and take out the vulcanized rubber tire treads. During the demolding process, take care to avoid damaging the tire treads and molds.
• Clean the molds and hot plates of the curing press to remove the remaining rubber and debris and get ready for the next vulcanization.

6. Maintenance and Service

6.1 Daily Maintenance

• After each day's work, clean the surface and inside of the curing press to remove dust, oil, debris, etc.
• Check whether the connecting bolts of each component are loose. If so, tighten them in a timely manner.
• Check the oil level and oil temperature of the hydraulic system. If the oil level is insufficient, add hydraulic oil in a timely manner. If the oil temperature is too high, stop the machine and let it cool down.

6.2 Regular Maintenance

• Conduct a comprehensive inspection of the curing press once a week or once a month, including the flatness of the hot plates, the sealing performance of the hydraulic cylinders, and the insulation performance of the electrical system.
• Conduct a major maintenance of the curing press once every six months or once a year. Replace the vulnerable parts such as hydraulic oil, seals, and heating elements, and carry out a comprehensive overhaul and debugging of the equipment.

Qingdao Beishun Environmental Protection Technology Co., Ltd. is engaged in Environmental protection machinery, rubber machinery R & D and manufacturing enterprises, located in the west coast of Qingdao ---- Jiaonan city, Qingdao Economic and Technological Development Zone, adjacent to the former Bay near Qingdao Port and International Airport Jiaodong airport, excellent geographical location.

The company gathered a large number of the industry's outstanding technical and management personnel, advanced machining, heat treatment equipment and sophisticated detection equipment. With high-quality service, advanced equipment and strong technical force as the basis, through constant innovation and development, Beishun Environmental Protection Technology machinery has many customers at home and abroad to establish a stable business relationship, and gradually establish a brand in the same enterprise.

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