Advantages and disadvantages of injection molding Injection molding: also known as injection molding, this method of injection and molding. There are many advantages of injection molding, and the general summary is fast production speed, high efficiency, automatic operation, variety of design, simple shape, small size, accurate product size, convenient product update, complex shape and so on. And suitable for mass production and complex shape products and other molding injection processing fields. Factors affecting the quality of injection molding 1. Injection pressure: the reason for the need for injection pressure is to offset the resistance in the process of melt flow, or the resistance in the flow process to eliminate the pressure of the injection machine, the two are just the opposite, in order to ensure the smooth progress
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What Is Injection Molding Clamping Unit? A clamping unit for an IMM is used to keep the mold shut against the forces developed when injection pressure pushes plastic into the closed mold. It includes a drive mechanism for moving a moving platen of the injection molding machine in at least one direction. Some think there are only 2 types of clamping units for injection molding, while actually there are 3. 1.Injection Molding Toggle Type Clamping Unit: A toggle clamping unit for an IMM includes a toggle link, a crosshead connected to the toggle link, and a driving device for driving the crosshead. People mainly use it for high speed injection molding. Due to the different angles to the toggle position has a decelerate interval before the mold touchpoint that can
Read more →Injection molding machine is a special equipment which combines the hot working characteristics of plastics with the principle of melting die casting of metals. The original plunger injection molding machine was not developed until the late 1940s until the preplasticized screw injection molding machine. Since then, the focus of development is mainly around the pre-plasticized screw injection molding machine, has since appeared twin screw, exhaust and other advanced forms. In 1980, France produced the world’s largest screw injection molding machine, with an injection capacity of 170kg. From the 1980s to recent years, the development of injection molding machine is mainly concentrated in several aspects: namely, the application of precision automatic control system and various auxiliary equipment in automatic molding; Precision machinery and high performance hydraulic system; Various special
Read more →How does traditional machining break through the dilemma? The market share of injection caps is gradually expanding, and with the increasing appearance demand of consumers, the role of bottle caps is not only reflected in the sealing, they pay more attention to the appearance of products, such as modeling, refinement, finish and so on. It is bound to have an impact on the production technology of the bottle cap. How to improve the production efficiency while ensuring the quality has become a technical problem in the manufacture of the bottle cap mould. Suction machine will be mixed material into the injection molding machine barrel, heated in the barrel to melt and plasticize state, injected into the mold cavity, cooling in the cavity, demoulding, and then through the ring
Read more →1. Shrinkage rate Forms and calculations of thermoplastic molding shrinkage As mentioned above, the factors affecting thermoplastic molding shrinkage are as follows: 1.1 Thermoplastics In the molding process, due to the volume change from crystallization, strong internal stress, large residual stress frozen in the plastic parts, strong molecular orientation and other factors, thermoplastics have a larger shrinkage rate, wide shrinkage range and obvious directivity compared with thermosetting plastics. In addition, the shrinkage rate after forming, annealing or humidification treatment is generally larger than thermosetting plastics. 1.2 Characteristics of plastic parts During molding, the molten material contacts the surface of the cavity and the outer layer is cooled immediately to form a low-density solid shell. Due to the poor thermal conductivity of plastic, the inner layer of plastic parts
Read more →When we use the injection molding machine, we need to carefully understand the model and specification of the injection molding machine, because the parameters of the injection molding machine have a greater impact on the production cost, quality and efficiency of injection products. How to choose the right injection molding machine?Injection Machines Molding First, the selection method of injection molding machine We should check the product specification provided by the injection molding machine manufacturer. The specification has the performance parameters of the injection molding machine, including the type of raw materials, the quality (weight) of the products, the shape design size and so on. You can sort out what kind of parameters you need, and then compare with the parameters of the injection molding machine, the value is
Read more →Our Professionals: 1. Making interchangeable cores mold : a most effective and cost-saving manufacturing process. Suitable for customers looking for “more variety but less quantity” solution. With only one mold, it can efficiently generate different kinds of products, 2. Making high transparent PC, Acrylic, PMMA, PET.. parts mold with high gloss polishing and Mold-Tech texture on parts surface, applied mostly in lighting parts, outdoor LED parts projects. 3. Making gas assisted injection molds and products projects …mostly applied in projects like the thick handles, monitors, the frame of TV cabinet etc, which prevents the shrinkage mark, improves the strength of the parts and saves material costs. 4 Medical silicone and rubber molds/products making : We manage both “solid” and “liquid” silicone rubber material meeting the
Read more →Bike Helmets are useful as safety gear to prevent or minimize injuries to the head and brain in an uncontrolled environment during riding a bike. According to the US Consumer Product Safety Commission, about 900 people, including more than 200 children are killed annually in bicycle related incidents, and about 60 percent of these deaths involve a head injury. Bike Helmets can help absorb impacts and save their life. A motorcycle helmet is a type of helmet (protective headgear) used by motorcycle riders. The primary goal of a motorcycle helmet is safety – to protect the rider’s head during impact, thus preventing or reducing head injury and saving the rider’s life. Some helmets provide additional conveniences, such as ventilation, face shields, ear protection, intercom etc. Plastic Helmet Manufacturing
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Ballpoint Pen Manufacturing will involve many making processes and pen making machines, like ballpoint pen assembly process, ballpoint pens part manufacturing process, ballpoint pen automatic assembly machines, pens parts making machine, pens materials treatment process & machines, etc. Below we will try to introduce the pen manufacturing industry step by step. Firstly, we should know the pen components & ballpoint pen parts’ names. Most of ballpoint pens will mostly have parts like pen barrel, pen clip, pen tip, thrust device, thrust tube, spring, reservoir, socket, ball & ink. But there are lots of simple design ballpoint pens with quite fewer parts, these ball point pen parts names are pen barrel, pen end clip, reservoir, socket, ball & ink. Secondly, we would like to talk about the
Read more →The following articles will cover plastics helmets manufacturing production, various materials used to build motorcycle helmets and they all have different advantages. Helmets have several layers. The outer shell features a reinforced Styrofoam lined interior and a breathable padding that offers the perfect fit and moisture absorption. Because inner padding or foam layering tend to be more uniform across the helmet spectrum, these articles will focus on the commonly used materials for the exterior shell. The helmet is usually composed of a hard shell, a buffer layer, a comfortable cushion, a wearing device, and goggles, etc. The hard shell is mainly made of resin materials of PC, ABS, PC+ABS alloy materials, glass Fiber, and carbon fiber materials, etc. What are safety helmet production process Plastics helmets manufacturing will
Read more →Crystal cosmetic bottle injection molding production line is very simple. Though the flow rate of acrylic is worse than PS and ABS, and the melt viscosity is more sensitive to temperature changes. During the Cosmetic Bottle injection molding process, we can adjust the injection temperature to find the best melt viscosity. PMMA is an amorphous polymer, which melting temperature is greater than 160°C and the decomposition temperature is up to 270°C. 1. Acrylic Material Processing Before Injection Molding The acrylic has a certain degree of water absorption about 0.3-0.4%, but the injection molding process needs about 0.1% to 0.04%. It will causes bubbles, gas lines, and reduced transparency in the melting if the moisture is high. So the acrylic must be dried before injection molding. Normally, the drying
Read more →Guanxin Plastic Machinery have lots of experience in the PET preforms manufacturing process. We offer our customers professional PET preform production line with lots of optimized functions, manufacturing process management, production management and quality control systems. We provide you a turnkey solution for full process of Dehumidification Drying raw materials, quantitative additive color mixing machine, rapid and stable injection molding output of bottle preform, PET preform mold with hot runners, rapid cooling robot mechanism; Total production cost down with high productivity, and lowest blow bottle defect rate of only 0.5%. This PET Preform Production Line is mainly set up by a 350 ton PET preform injection molding machine with servo motor and electronic gear box Synchronous Charging system, and a 64 cavities high speed PET preform injection mold
Read more →20 Liter Plastic Paint Bucket is a bit special as the thickness is about 1.85mm but the material flow path is about 600 mm. It means the flow path is more than 300 times comparing it`s thickness. So the manufacturing process requires a high injection speed. We will need a optimized Plastic Bucket Moulding Machine to produce the 20 Liter Plastic Paint Buckets. 20L plastic paint kettle is most made with only one cavity with a 650 Ton dedicated injection molding machine. This plastic paint kettle molding machine should have a high injection speed of about 500-600 mm/s, the open stroke should be bigger than 750mm, with a precise mold open controlling system if you may run an in-mold-labeling system in the future. Click here to check more
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