Forming method of cup making machine
Molding machine cold pressing molding machine. We often call it cold pressed sintering molding. The difference between it and general compression molding is to promote pressurized molding at room temperature. The molded product can be reheated or solidified by chemical action. This method is generally used for molding PTFE materials and for some high temperature resistant plastics such as polyimides. The general process is from the three processes of billet sintering and cooling.
The cup machine is used to transfer molding. This kind is a kind of molding method of thermosetting plastic, when molding, the mold plastic is heated and softened in the heating chamber, and then pressed into the heated mold cavity. The cup making machine passes the molding according to the different equipment and will divide the bonus of different types of work: 1. Plate type; 2 tank type; 3 plunger type.
The requirement for plastic to transfer molding is that before the curing temperature is not reached, the plastic should have a larger activity. After the curing temperature, it must have a faster curing rate. Phenolic resin, melamine formaldehyde and epoxy resin that can meet this requirement.
The transfer molding has the following advantages: (1) less waste products and reduced processing quantity; 2) can mould products with fine or breakable insert and perforation, and can adhere to the correct position of embedded parts and holes; 3. Products have uniform function, accurate scale and high quality; and the wear of die is small. The defects are: 5. The production cost of the mould is higher than that of the tight mold; 6. The plastic loss is large; and the fiber reinforced plastic is anisotropic because of the fiber orientation; the plastic around the embedded parts will sometimes decrease the strength of the products because of the infirm melt press.
The cup machine is molded in low pressure. Use the pressure or lamination method of forming pressure equal to or less than 1.4 MPa.
Low pressure molding is used to make reinforced plastic products. Enhance data such as glass fiber, textile, asbestos, paper, carbon fiber and so on. Most of the commonly used resins are thermosetting, such as phenolic, epoxy, amino, unsaturated polyester, silicone and other resins.
Low pressure molding includes bag pressure method and eruption method
Bag pressure molding. With the elastic bag (or other elastic diaphragm) bearing the pressure of the fluid, the reinforced plastic between the rigid die and the elastic bag is uniformly pressed and become a way of making parts. According to different ways of causing fluid pressure, they can be divided into pressurized bag molding, vacuum bag molding and autoclave molding.
The spray is formed. When molding and strengthening plastic products, spray the short cut fiber and resin together to form a product on the mold.
Extrusion molding. Extrusion molding, also known as kneading molding or extrusion, is a way to make the material pass through the die in a continuous manner after heating and pressurizing in the extruder.
Extrusion is used primarily for thermoplastic molding and for certain thermosets. The extruded products are continuous sections, such as pipes, rods, wires, plates, films, wire and cable cladding, etc. In addition, it can also be used for plastic mixing, plasticizing, granulation, coloring and blending.
The extruder is made up of extrusion equipment, transmission mechanism, heating and cooling system. There are two types of extruders: screw type (single screw and multi screw) and plunger type. The extrusion process of the former is continuous and the latter is intermittent.
The basic structure of Single Screw Extruder mainly includes transmission equipment, feeding equipment, barrel, screw, die and die.
The auxiliary equipment of the extruder has three kinds of materials, such as material delivery and drying, extrusion processing equipment (setting, cooling, traction, cutting or roll) and production condition control equipment.
Plastic cups are used in public places, used for people to use plastic products for water or food, because the demand for plastic cups in public places is still very large, giving a big drive and development to the cup machine. Making plastic cups is always a powerful device for making plastic cups. In making plastic cups, the cup making machine has a very strong function.
The cup making process of cup making machine follows the advance principle of "advanced technology, reasonable economy and comprehensive utilization of resources". It selects advanced distributed control system, controls the process parameters of the whole production line by the computer and makes the quality of the product stable on the high water level, and can reduce the cost of the material together. Strictly according to the professional standard, we should organize production and operation activities, manipulate the quality of products, provide quality products and excellent services for broad customers. On the equipment of the process equipment, the cup machine selects the new energy-saving equipment according to the energy saving criterion. According to the criteria which are beneficial to the environmental protection, the environmental protection equipment is selected first, and the requirements of the product plan made by the cup machine project are satisfied. In order to produce outstanding qualified plastic cups, the machine has been constantly changing and innovating.