Plastic mould عرض2 weeks ago - ملابس وموضة - مكه - 24 الآراء
cavity shape, and the application of the contour shape with the cutting edge can separate the blank according to the contour shape (blanking). Applying the cavity shape allows the blank to obtain a corresponding three-dimensional shape. The mold generally includes two parts, a movable mold and a fixed mold (or a punch and a concave mold), which can be divided and closed. The mold is a precision mold with complex shape, which bears the expansion force of the blank, and has high requirements on structural strength, rigidity, surface hardness, surface roughness and machining accuracy. The development level of mold production is one of the important signs of the level of machinery manufacturing.
Plastic mould is the abbreviation of a combined mold for compression molding, extrusion molding, injection molding, blow molding and low foam molding. The coordinated changes of the mold convex, concave mold and auxiliary molding system can process a series of plastic parts of different shapes and sizes. It mainly includes a concave die with variable cavity composed of a concave die combination substrate, a concave die assemblyThe appearance requirements of medical molds are relatively high. In addition to the absence of microcosm, trapped air, and strain, the finish must be very high. To achieve the mirror effect of the mold, polishing is required. Mold polishing has two purposes; one is to increase the smoothness of the mold, so that the surface of the product out of the mold is smooth, high and beautiful; , Mold polishing is generally the process of using oil stone, sandpaper, polishing paste, etc. to polish the cavity surface of the mold, so that the working surface of the mold can be as bright as a mirror, which is called mold polishing. Don't use the finest whetstone, sandpaper, and polishing paste at the beginning of medical mold polishing, which will not throw away the coarse texture. The live surface polished in that way looks bright and high, but when the side is photographed, the rough texture is revealed. Therefore, it is necessary to first grind with a coarse whetstone, sandpaper or grinding and polishing sound, and then change to a relatively fine whetstone, sandpaper or grinding and polishing paste for polishing, and finally use the finest grinding and polishing paste for polishing. This looks like a lot of trouble, there are many processes, but in fact it is not slow. One process after another, the rough processing lines in the front are polished off, and then the following processes are carried out, without rework, and the finish of the mold can be improved by one step. To meet the requirements of mold polishing, generally first use a coarse oilstone to roughen the surface of the machined mold cavity, grind to remove the knife marks of the machine tool, and then use a fine oilstone to polish the rough oilstone to achieve the marks, and then use a fine The surface polished by the fine oil stone is polished with sandpaper, and finally the cavity surface of the mold is polished with polishing paste or grinding paste to achieve a bright mirror-like effect. This is the general process of polishing medical molds. Of course, if possible, you can use an ultrasonic polishing machine to polish the mold, which is more efficient and less labor-intensive.
Since the auto lamp mould is aCommodity mould is a kind of mold. The design of thin-wall daily necessities mold needs to consider the following points: product parting surface, product wall thickness design, exhaust design of daily necessities mold, waterway design of daily necessities mold, and blowing position of daily necessities mold With the direction design, these problems directly determine the success or failure of a thin-walled daily necessities mold. Commodity molds need to realize fully automatic production: thin-walled products are an industry with small profits but quick turnover. Equipping with a manipulator can make the production run faster. The manipulator can help you stack directly, and the belt can be directly packaged and shipped. The daily necessities molds for all stamping parts on automobiles are called "automotive stamping daily necessities molds".