外文翻譯---澆注系統(tǒng)形式和澆口的設(shè)計-展示頁
2025-06-17 15:44本頁面
【正文】 φ4 mm, these values are based on experience, the total length of . 4. Shunt the surface roughness As shunt in contact with the outer layer of plastic mold rapid cooling, only the center of the plastic melt flow better, because of segregation, the inner surface roughness Ra does not require very low, generally from about μ m can, This is not just the surface smooth and help melt the plastic outer cortex fixed cooling, and the center of the melt between the poor have a certain speed, to ensure that the melt flow is appropriate when the shear rate and shear heat . Actual processing, milling machines used to flow Milling Road, less for the province to die, saved processing texture on the trip. (Province Die: manufacturing mold a very important process, generally equipped with a professional women die province, with grinding machine, sand paper, Whetstone, such as grinding tools will mold cavity surface polished, Moliang, lower cavity surface roughness Degrees.) 5. Shunt layout form Shunt at the surface of the arrangement and the foregoing cavity are closely related to a variety of different forms of layout, but should follow two principles: that is, on the one hand with tight, narrow platesize mold the other processes The shortest possible, the clamping force to balance. The flow of the mold form a balanced layout C. Gate Design Gate, also known as the feed mouth, is connected with the cavity of the Road diversion channel, in addition to direct gate, it was pouring system in the crosssection of the smallest part, but it is a key part of gating system, gate location, shape and size Plastic pieces of performance and quality of great. 1. Selection of gate Gate can be divided into restrictive and nonrestrictive gate two. We will adopt restrictive gate. On the one hand through the gate of restrictive crosssectional area of the sudden change to shunt the transmission to produce plastic melt flow rate of acceleration, improve the shear rate, making it ideal state of the movement, full of rapidbalanced cavity, another Improve plastics melt into the cavity when the flow characteristics, adjusting gate size, will enable multicavity at the same time is full, can control the filling time, the cooling time and surface quality of plastic parts, also plays a closed cavity to prevent plastic melt Turn the clock back, and to facilitate gate condensate materials and plastic pieces from the role. We use the side gate. Gate also known as the edge of the side gate, the gate abroad as the standard. Side gate open in the general classification level, the plastic melts in the cavity fillingside, the rectangular crosssection shape for more than slit, to adjust its crosssection of the thickness and width adjustment can melt injection at the shear rate and Gate closing time. This lamp gate processing easy, convenient dressing and plastic parts can shape features the flexibility to choose the feed position, so it is a widel
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