Kunshan Sendemory Metal Products Co., Ltd.

boldface,) 1. Automotive interior sheet extruder production line process flow Pressure surface treatment tractor & cutting
) ', black body,) 2. Introduction to the characteristics of each component of the extruder
) ', black body,), internal mixer functional resin, filler, additives and other materials It is put into the internal mixer, and the polymer material is continuously mixed through the rotor of a specific shape and relatively rotating in a closed state with adjustable temperature and pressure. It is mainly composed of the internal mixing chamber, the rotor, the rotor sealing device, the pneumatic The pressurizing device completes the plasticization and dispersion of the material, and the discharging process is completed through the unloading device and transmission device. The internal mixer has a sealed mixing chamber, so its working environment is relatively clean. The twin rotors rotate at asynchronous speeds and have a strong With the shearing function, the leftover materials during the production process and the defective products produced during subsequent molding can be directly put into the internal mixer to extrude the sheet again without being broken
) ', bold,), automatic stainless steel lifting Machine, cone double forced feeder, single screw extruder single screw
) ', bold,)??Using a series of high-precision hard-toothed thrust seats specially designed for single-screw rubber and plastic extruders The gear transmission box is equipped with a thrust bearing at the front end of the output shaft to withstand the axial thrust of the screw when it is working. The whole machine is small in size, high in load-bearing capacity, stable in transmission, low in noise and high in efficiency
) ', boldface,)?? Equipped with energy-saving variable frequency motors and frequency converters that meet national environmental standards Divided into two parts, solid-liquid phase separation is formed during the plasticizing process of the screw. All solid phase materials remain in the solid phase tank, while the gas in the solid phase tank is discharged from the material backward under the action of pressure, reducing the Air bubbles in the product. At the same time, the heat exchange area between the solid phase material and the inner wall of the barrel is increased. There are many structures of separate screws. In actual design and testing, our company believes that in terms of the convenience of machining and the use effect, the main and auxiliary thread lifts should be equal, and the liquid phase groove and solid phase groove width of the screw groove should be equal. Remaining unchanged, the depth of the solid phase tank gradually becomes shallower starting from the compression section, while the depth of the liquid phase tank gradually becomes deeper until the end of the homogenization section. This structure is beneficial to products with high transparency and raw materials with poor thermal stability. In addition, the separation screw design has strong adaptability to raw materials and needs to reasonably select the screw parameters according to the actual situation, including compression ratio, distribution of three stages, and position of the secondary screw edges.
) ', black body,)?? The material of the barrel is nitrided, nitrided, the deep brittleness is no more than grade 1. The barrel is cooled by water, the coiled copper tube is strengthened and the manufacturing process is improved, and the copper tube hole welding nozzle is fully welded and The belt is reinforced and fixed to prevent water leakage here. The barrel is equipped with a stainless steel protective cover. The protective cover is required to be connected to the machine base. The barrel is equipped with exhaust, an external bell mouth is used for vacuuming, and a hard pipe is used to connect the vacuum chamber to facilitate cleaning of materials and pipes.
) ', bold,) The hanger-type die head of the sheet mold adopts a special double-throttle design to make the thickness adjustment of the sheet more precise. Temperature control ℃ can accurately control the plasticizing process and the thickness and flatness of the sheet. Effective discharge width, product width, product thickness, die head material steel, common zone heating, stainless steel heating rod die head flow surface hard chromium plating.
) ', bold body,) The three-roller calender adopts a double-casing spiral blade circuit to make the surface temperature of the rollers uniform, rapid temperature rise/fall, and does not require a large amount of cooling medium. The surface of the roller is quenched, ground, hard chromium plated (the thickness of the coating is not less than .) and then mirror polished. The hardness reaches above. The roller surface runout is less than the surface temperature error and the error is within ℃. Comes with heating medium rotary joint and heat and pressure resistant hose.
) ', boldface,) The wheel set positioning adopts a precision screw lift and its components. The central wheel is fixed, the upper and lower wheel clearances are roughly adjusted by motors, manual fine adjustment and left and right independent adjustment. It can achieve the purpose of rapid gap adjustment and high-precision fine-tuning at the same time. The high strength, high precision and optimized design of this mechanism are the core components to ensure the quality of the finished plate.
) ', bold,), traction machine cooling traction edge trimming device, traction motor power, the pressure roller is a rubber roller, the driving roller is a steel roller traction, the diameter of the traction roller, the effective lifting distance of the traction passive roller is, both sides Two cutters can effectively cut off the waste material to make the sheet reach the required width. There are two spare ones. The total length of the bracket is divided into two sections. The front section can be moved forward and backward according to the calender. There is an automatic meter counter to set the product length. .
) ', bold,), maximum shearing width of shearing machine. Maximum thickness, shearing speed, times/min. Shearing method: mechanical shearing, motor power. (Customized) automatic film feeding device, when the length is reached, the film feeding will stop. After cutting, the film will be automatically fed. The diameter of the film feeding roller, motor frequency conversion speed regulation, inverter counter, encoder, fixed length cutting Cut the length of the transition bracket and connect the traction and shearing machine.
) ', 黑体,) Features of the unit
) ', 黑体,) This unit is designed for sheet materials. Compared with the traditional production process, it reduces the number of starts and truly achieves low investment. The concept of low noise, low energy consumption, high efficiency, high return, less labor, stable quality and continuous production is adopted. The screw is designed with special mixing function and high plasticizing capacity. The hanger-type die adopts a special double-throttle design to make the thickness adjustment of the sheet more precise. Temperature control ℃ can accurately control the plasticizing process and the thickness and flatness of the plate. The three-roller calender adopts horizontal, vertical or tilted type and can be lifted and lowered freely. The plate thickness control uses screw adjustment and two-way adjustment of the pressure wheel to control the plate thickness. The independently controlled roller temperature control system can accurately control the temperature of the pressing roller to ensure uniform thickness of the sheet. Slicing machine, precise plate length and quantity. Equipped with automatic meter counter to set product length.