Introduction to silicone vulcanizing presses
Silicone vulcanizing presses and vacuum vulcanizing presses
Silicone rubber vulcanizing machine. The automatic mold opening integrates the functions of various rubber vulcanization processes. Such as pre-pressing, automatic air release, holding pressure vulcanization and automatic mold exit. PLC programmable controller is adopted and all mould parameters are capable of being stored in the touch screen for easy operation and management. The silicone plate vulcanizing press has the advantage of high pressure per unit area of the hot plate, reliable operation and low maintenance. The main function of the plate curing is to provide the pressure and temperature required for curing. The pressure comes from the hydraulic system through the hydraulic cylinder and the temperature from the heating medium.
Flat belt vulcanizing presses are mainly divided into two categories: column type flat belt vulcanizing presses and frame type flat belt vulcanizing presses according to the structure of the frame. According to the number of working layers can have a single layer and double layer. According to the hydraulic system working medium can have oil pressure and water pressure. In the rubber industry, the column type flat belt vulcanizing press is one of the earlier models in use. In the past, the flat belt flat vulcanizing press uses a column structure. But at present, the frame structure refers The frame type flat belt flat vulcanizing press has the following advantages compared with the column type flat belt flat vulcanizing press. It allows the installation of larger diameter hydraulic cylinders at a certain centre distance. Thus reducing the number of hydraulic cylinders, and has a simple structure and low maintenance.
Vacuum plate vulcanizing machine, suitable for silicone product and molding vacuum vulcanizing molding process. It is especially suitable for the production of various forms of seals. The products are molded and vulcanized in the vacuum negative pressure environment. It is easier to exhaust and not easy to form air bubbles. It is available in the form of single seat and double seat, with safety enclosure, and with clamping mechanism. So users can choose to use it according to the process requirements.
The silicone molecules cross link and become a network structure. Thus improving the use characteristics of silicone, this change said “vulcanization”. The term “vulcanization” comes from the fact that natural rubber is initially vulcanized. According to the different methods of vulcanization, there are hot vulcanization, cold vulcanization, high frequency vulcanization and so forth. Hot vulcanization is the vulcanization of silica gel by electric or steam heating. And it is widely available for vulcanizing various kinds of mold products and silica gel products.
Application of flat vulcanizing machine
The flat vulcanizing machine is suitable for cell phone cases, O-rings, silicone bracelets, silicone remote control and other key products and household electrical appliances accessories, food utensils. Silicone arts and crafts, toys and accessories, automotive silicone parts, industrial silicone parts, sports equipment, various kitchen utensils, multi-layer mold products and other complex silicone and rubber production, processing, etc.
Features of vacuum plate vulcanizing machine.
1.Comparison with existing common models. The machine has the following features lower hot plate is movable. The upper hot plate is located in the vacuum box. The temperature of the hot plate is even.
2.High thermal efficiency vacuum sealing strip to place on the closed surface of the vacuum box can realize the vacuum box and the lower clamp plate close together and seal reliably.
3.It is not easy to change as it is not easily damaged. Vulcanization mold fixing on the splint. It can automatically start the mold to improve the operating environment and reduce labor intensity. Adopt programmable controller control, high degree of automation, stable and reliable control. Simple and convenient installation and debugging, the number of deflation and vulcanization time can be set arbitrarily.
The working principle of vacuum plate vulcanizing machine.
1、The mainframe of the plate vulcanizing machine adopts four columns structure, the pressurization form is under pressure. 4 columns will connect the upper beam with the machine base to form a stable frame, the vacuum cover is fixed on the upper beam, the upper hot plate is fixed in the vacuum cover, a main hydraulic cylinder and two auxiliary hydraulic cylinders are installed in the machine base, two auxiliary hydraulic cylinders are installed on the upper beam.
2, hydraulic cylinders are single-acting hydraulic cylinders, both sides of the symmetrical arrangement of hydraulic cylinders not only meet the requirements of aesthetics, but also can make the machine run more smoothly, reduce hydraulic oil leakage and improve the quality of molded products.
3、The plunger of the main hydraulic cylinder is connected to the lower hot plate, and the piston rod of the auxiliary hydraulic cylinder is rigidly connected to the movable platform, under the drive of the auxiliary hydraulic cylinder, the lower mould clamping plate can be lifted to achieve the opening and closing of the lower mould clamping plate and the vacuum hood, and the lower hot plate can be lifted in the closed vacuum hood under the drive of the main hydraulic cylinder, in order to adapt to the requirements of different thickness molds and deflation and pressurisation. The lower hot plate and vacuum hood are sealed with a standard vacuum seal and T-slots are provided in the upper and lower hot plates for mould clamping.
Silicone Vulcanizing Press Process
Using the temperature and pressure of a hot press, the product is vulcanised by means of a mould. This process is relatively inexpensive, has a high output and is commonly used. It is mostly used for single-coloured silicone products. It can also be used for two-colour and two-hardness products or multi-colour and multi-hardness products, but the structure of the product is not flexible and is limited. It can also be used to cover plastic or metal, but is also inflexible in structure and has a temperature requirement for the object.
Nowadays, with the expansion of people’s work and life, some fields have to use silicone products, then in this silicone processing industry must use the silicone vulcanizing machine. Because this machine can be said to be one of the basic applications of silicone processing machinery, so no matter what kind of silicone products have to use this machinery.
This machine plays a simple role in heating the silicone and then moulding it through a fixed mould. Although this machine is relatively homogeneous in terms of function, it is an essential part of the production of silicone products. No matter what type of silicone product is being made, the silicone needs to be heated first so that it can be used to produce the silicone product you want.
We use a lot of silicone products in our lives, and all of them are made by this machine. If it were not for these machines, there would not be so many different types of silicone products available in the silicone industry. As one of the basic processing machines in the industry, it would have played a fundamental role in the industry and without it the industry would not have developed as much as it did.
As an environmentally friendly raw material, silicone is loved by the general public for its various superior properties. Its softness and non-toxicity are widely used in industrial seals and medical devices. In particular, its working temperature of -60 to 250 degrees Celsius is incomparable to plastic. The use of silicone wrapped around metal or plastic parts to form some new performance is to make the product soft and hard, for example, silicone wrapped steel kitchen spatula, its environmental protection by the consumer favorite. Silicone is different from plastic, silicone is a thermoforming material, silicone raw materials at a certain temperature, curing to form the products we want.
This is why silicone vulcanizing machines are an essential piece of machinery in the silicone processing industry.