1. Injection pressure,This is the pressure that causes the flow of plastic and can be measured with a sensor on the injection nozzle or hydraulic line. It has no fixed value, and the more...
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Fault,Cause,Treatment,I. Motor does not run,1. electrical power supply fuse is blown.2. poor start button connector.3. tripped overload relay.4. Main circuit failure, bad disconnector.Replace the fuse...
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Underfill is a phenomenon that occurs when the injection material does not fill the mold cavity, resulting in an incomplete part, usually in thin-walled areas or areas away from the gate...
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1. The mold temperature is too low to solve the shrinkage problem,The shrinkage problem of hard plastic parts (surface shrinkage concave and internal shrinkage hole) is caused by the defect...
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1. The mold temperature is too low to solve the shrinkage problem,The shrinkage problem of hard plastic parts (surface shrinkage concave and internal shrinkage hole) is caused by the defect...
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I. Start to close the mold, 1. Start clamping pressure: the initial setting value reference is 25, when this pressure is too small and leads to slow speed, try to increase the speed, this pressure...
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Reasons for gas in the manufacture of products,1. The material in the feeding system has gas or there is air in the cavity, and the gas in the runner and cavity is not discharged in time during the molding process...
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It is the hydraulic oil as the working medium, through the power element (oil pump) the mechanical energy of the prime mover into hydraulic oil pressure energy, and then through...
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As the most important molding equipment for injection molding product processing, the quality of injection mold is directly related to the quality of products. Moreover, since...
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Visible defects on the surface of injection molded products include dark spots, gloss differences or fogged areas, and surface wrinkling or what is called orange peel. Usually...
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The depressions on the surface of molded parts are called shrinkage holes, which are caused by the shrinkage of plastic during molding, so most of them are difficult to...
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I. Injection mold, 1). If the mold cavity processing is poor, such as scars, microporous, wear, roughness, and other deficiencies, will inevitably react to the plastic parts...
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1. Colorant quality does not meet the use requirements,The performance of the coloring agent is directly related to the color quality of plastic parts after molding. If the...
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The application of plastic parts is becoming more and more widespread, from simple tableware, kitchenware to complex mechanical parts, electronic products shells, etc. are used...
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Before injection molding, a new mold, or when the machine is replaced by another mold for production, mold trial is an essential part. The result of the mold trial will directly affect...
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1. Guide column damage,The guide pillar mainly plays a guiding role in the mold to ensure that the molding surfaces of the core and cavity do not touch each other under any circumstances...
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Dimensional instability refers to the change in the size of plastic parts between each batch of molded products or between each cavity of molded products produced by each mold under...
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The influence of the nature of inorganic mineral fillers on plastic products is multifaceted, including physical and chemical composition and properties, particle size and distribution...
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For hygroscopic materials (such as nylon), high resin moisture content can also cause screw slippage. Improper drying can significantly reduce the viscosity of the material and cause...
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Compared with other moulds, injection moulds are more complex and precise in structure, so the requirements for operation and maintenance of products are also higher.
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The automotive bumper is one of the larger trim parts of the car, which has three main functions: safety, functionality, and decoration.There are three main ways to achieve the light-weighting...
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When the ejector pin action of the hydraulic injection molding machine is abnormal, we can check and troubleshoot one by one for the following reasons: first of all, you...
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The close relationship between injection speed and product quality makes it a key parameter in injection molding. By defining the beginning, middle, and end of the filling speed segment...
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I. Drawing mold diagram,Before drawing the general assembly diagram of the mold, the process diagram should be drawn, and it should meet the requirements of the part drawing and process...
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Injection molding is to inject molten plastic under high pressure through the nozzle into the closed mold with low temperature and molding. Both thermoplastic and thermosetting...
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