Chongqing garbage can mold design and manufacturing - the structure of plastic mold of Shenzhen hengxingchang Mold Co., Ltd. mainly includes a die with variable cavity composed of a die combination base plate, a die component and a die combination card, and a die with variable core composed of a die combination base plate, a die component, a die combination card, a cavity truncation component and a side truncation combination plate. In order to improve the properties of plastics, various auxiliary materials, such as fillers, plasticizers, lubricants, stabilizers and colorants, should be added to the polymers. Silica gel raw materials can be divided into solid silica gel and liquid silica gel according to their physical properties. Solid silica gel is mainly used for molding products. For example: silica gel cover, silica gel tableware, silica gel mold, silica gel button, etc. liquid silica gel is mainly used for extrusion products, such as silica gel nipple, silica gel tube, etc.
Although the injection time is very short and has little influence on the molding cycle, the adjustment of injection time has a great effect on the pressure control of gate, runner and cavity. Reasonable injection time is helpful to the ideal filling of melt, and it is very important to improve the surface quality of products and reduce the dimensional tolerance.
The injection time is much lower than the cooling time, about 1 / 10 ~ 1 / 15 of the cooling time, which can be used as the basis for predicting the whole molding time of plastic parts. In the mold flow analysis, only when the melt is completely driven by the screw rotation to fill the cavity, the injection time in the analysis results is equal to the injection time set in the process conditions. If the pressure maintaining switch of the screw occurs before the cavity is filled, the analysis results of the design and manufacture of the garbage can mould - Shenzhen hengxingchang mould Co., Ltd. will be greater than the setting of the process conditions.
Plastic is the most common material in our life today. With the development of the times and the progress of science and technology, the plastic industry has now become a complete industrial system. As a new type of material, it has become an indispensable existence as the basic materials such as steel, cement and wood that we traditionally use. In our life, plastic products are everywhere, so how are these products made?
Speaking of plastic, I think a lot of people are the same as me. The initial understanding of him comes from our chemistry textbooks for junior and senior high schools. But the understanding of him only stops at those simple contents in the chemistry textbooks of junior and senior high schools, which may only be a summary sentence, a kind of polymer compound. But in fact, the plastic used in our life is not so simple.
In the injection molding manufacturing industry, the mold maintenance cost has always been high and uncontrollable, eating into the boss's net profit. Due to the particularity and irregularity of different products, although many mold protection measures are adopted, the loss caused by mold damage and personal injury can not be avoided. However, every injury is costing the company's net profit, which is very painful.
When purchasing injection molding machines, many injection molding machine salesmen will introduce the idea of how good the low-pressure protection period is; but why do we have to install monitors when we actually produce? And the more sophisticated the injection molding machine, the more so. Why? When the injection molding machine is in place, the output signal triggers the mold protector, which continuously takes the image of the mold cavity, the design and manufacturing of the garbage can mold - Shenzhen hengxingchang mold company monitors whether the thimble pushes out and drops the molded workpiece.
In the process of setting up the detection principle system of mold protector of injection molding machine, two standard images are taken: after the mold is opened in place, before the ejector pin acts, the standard image of plastic parts after injection molding is carried on the moving mold; and the standard image of mold after demoulding and after the insert is in place, before the mold is closed.
In the inspection process of mold protector of injection molding machine, when monitoring plastic parts are used, the system takes moving mold image after the mold is opened in place, compares with the recorded standard image with plastic parts, extracts the difference between the two, so as to check whether the product has defects, burrs and other problems. Before the mold cavity is closed, the system takes the image after demoulding and compares it with the stored image of the standard mold cavity, so as to check whether there is any residual product on the mold, whether the garbage can mold design and manufacturing - whether the inserts of Shenzhen hengxingchang mold company are in place, etc.
Too much silicone oil is added in the process of making the mold, which destroys the molecular weight of silica gel, so the mold will have less turnover times and not durable. If we say to make small products with complex patterns, we can use silica gel with high hardness to open the mold, and there will be less times of mold turnover, because silica gel will be brittle and easy to break when it is too hard. On the contrary, if we build products and use silica gel with small hardness to make mold, the result will also be unsatisfactory. Because silica gel is too soft, its tensile strength and tear strength will be reduced, the mold will be deformed, so the number of turnover will be reduced. The quality of mold silica gel itself is very good. Silica gel is not good or bad. The garbage can mold is only suitable or not. This situation will not occur if the silicone suitable for the hardness of the product is used to make the mold.