Injection molding is a manufacturing process used to produce a wide range of plastic products, from small components to large containers and automotive parts. The process involves melting plastic pellets and injecting them into a mold cavity, where they cool and solidify into the desired shape. Injection molding machines are used to automate this process and are typically large, heavy-duty machines that can produce a high volume of products. There are several types of injection molding machines, including hydraulic, electric, and hybrid machines. Hydraulic machines are the most common and use hydraulic pumps to operate the machine’s movements, including the clamping, injection, and ejection processes. Electric machines use electric motors and servo motors to operate the machine’s movements and are more energy-efficient. Hybrid machines combine hydraulic and electric
Read more →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
Read more →1.Check how the machinery works Before starting, the injection molding machine and auxiliary machine must be inspected to ensure that the equipment is in normal condition (according to the requirements of L1 equipment operation records). If any problems are found, the maintenance personnel should be notified in time. 2.Power supply for injection molding machine Turn on the power supply of the injection molding machine, the mold temperature of the mechanical and electrical source, the general mold temperature is set to 80℃, the drying mechanical and electrical source (raw materials need to be dried at 80℃ for 4 hours), the cold water mechanical and electrical source, the exhaust fan and other power supply, turn on the injection molding machine oil pump motor screw and begin to heat up. 3.Grease
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
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Why we need to set mold protection to prevent damage? Beside the injection molding machine itself, the second most expensive piece of equipment we use on a daily basis is the mold. If the molds are damaged, you are not only responsible for the cost of maintenance, but also for downtime and labor costs.If done correctly, the mold can rest on something as thin as a business card. Here are three key components for setting up mold protection on injection molding machines: 1. Starting position of mold protection When do you reach the point in the mold where you might break when the mold is closed? In the figure above, this point is when the mold touches the guide pin. This is where we
Read more →Plastic injection mould is generally composed of forming parts, pouring system, guiding part, pushing mechanism, temperature control system, exhaust system, supporting parts, side parting and core pulling mechanism. Simple description of each part of the injection mold Figure 1-1 Basic structure of the plastic injection mold 1. The forming parts refer to the parts related to the forming cavity of the moving and fixing parts. 2. The pouring system is to melt the plastic 3. Guide part in the injection mold, the guide part is used to guide the dynamic and fixed mold of the mold, so that the mold can be accurately matched when the mold is closed. 4. Push out mechanism refers to the device that pushes out the plastic parts from the mold after parting.
Read more →The use of injection molding machine is becoming more and more of a concern in the industrial industry currently,. Do you know why people want to use injection molding machine? What good does it bring? Here are some of my views. Only for reference. Plastic Moulding Advantages 1.Fast Cycle times can be as low as 10 seconds. Combine that with a multi-impression injection moulding tool and you get a LOT of products very quickly. Generally speaking， it takes a bit longer as it’s a specialist material and has a lot of features to be moulded correctly, but at about 50 seconds you’d still get 70 parts per cavity per hour. CNC machining a one-off would take half a day – 3D printing it even longer! 2. Low cost
Read more →In the existing injection molding industry are faced with: Raw material increase Labor costs have skyrocketed Difficulty in recruiting staff Large turnover of personnel Product price decline The problem of increasingly fierce competition in the industry. I njection molding industry has entered the era of transformation, small profit and reshuffle, injection molding workshop management needs to establish a “scientific, perfect, systematic, standardized” operation management system, so that “everything is managed, everyone is in charge” of the working atmosphere of the department, for the injection molding workshop each post work efficiency improvement, manpower reduction has the following measures and suggestions: First, the upper and lower mold workers to improve work efficiency, reduce manpower measures 1. Do a good job in the production planning arrangement to reduce
Read more →First, the working principle of injection molding machine Injection molding machine for short injection molding machine. Injection molding is the use of plastic thermophysical properties, the material from the hopper into the barrel, the barrel outside the heating ring heating, so that the material melt, in the barrel is equipped with external power motor drive rotating screw, material under the action of the screw, along the screw groove forward transportation and compaction, the material in the external heat and screw shear under the double action gradually plasticized, melting and homogenization, When the screw rotation, the material in the screw groove friction and shear force under the action, the molten material pushed to the head of the screw, at the same time, the screw in the material reaction backward,
Read more →Injection molding process Mobile phone shell is usually made of PC(polycarbonate) or PC+ABS material molding, due to the relatively poor liquidity of PC, so the process is usually filled with high mold temperature, high material temperature; The gate used is usually the point gate, and graded injection molding should be used when filling, to find the gate position and the V-P(injection – pressure maintaining) switching position, which will be of great help to solve the gate mark and underinjection fly-side and other anomalies. The following is the main molding conditions of mobile phone products, introducing the melt temperature, mold temperature, injection speed, back pressure and other molding parameters setting points for attention. Melting temperature and mold temperature The optimal setting of molding temperature is related to many factors,
Read more →1.1 Introduction to the working principle of injection molding The working principle of injection molding machine is similar to that of syringe infusion. It uses the thrust of screw (or plunger) to inject the plastic that has been plasticized into the closed injection mold cavity at high pressure and high speed. After cooling and curing, plastic products with the shape of the mold cavity are obtained. Injection molding is a cyclic process, each cycle mainly includes: quantitative feeding a melting plasticizing a pressure injection a filling cooling a mold lifting parts. After removing the plastic part, the mold is closed again and the next cycle is carried out. 1.2 Application of injection molding machine Injection molding processing method can be shaped complex shape, complex structure, high dimensional precision
Read more →The plastic bottles we often drink have triangular symbols on the back for plastic recycling. The triangles have 1-7 numbers, each representing a different material. The number 1 represents PET, or polyethylene terephthalate Mineral water bottles, carbonated drink bottles are made of this material. Dong Jinshi pointed out that hot water can not be recycled in beverage bottles. This material is heat-resistant to 70℃, which is only suitable for warm or frozen drinks. When loaded with high temperature liquid or heated, it is easy to deform and dissolve harmful substances to human body. Scientists found that after 10 months of use, the plastic could release carcinogens and become toxic to humans. So when you’re done, throw it away. Don’t use it as a water cup, or use it
Read more →Prepare the vertical injection molding machine before starting Check whether each lubrication part is fully lubricated; Check whether the oil pump has abnormal noise; Install and tighten the mold carefully, and pay attention to safety when loading and unloading the mold; Adjust pressure at all levels; Set all levels of temperature. Manual operation and adjustment of vertical injection molding machine Adjust the position of each switch manually to ensure the safety of the die. Set the manual button ON the electronic control panel to ON(open). When the machine is operated manually, each action button ON the electronic control operation panel can only be operated when the button is pressed (ON), and the action disappears when it is released. Mold adjustment: First adjust the die close high voltage proximity
Read more →First, classification of injection molding machine: Due to the structure and variety of injection products, so used for molding injection products injection machine types are more. 1. Classify raw materials according to plasticizing and injection methods. 2. Classification according to the shape and structure of the injection machine. 3. Classification according to the processing capacity of injection molding machine. 4. Classification by special purpose of injection machine. According to the classification of plasticizing and injection of raw materials, the injection molding machine can be divided into three kinds: (1) plunger type, (2) reciprocating screw type and (3) screw plasticizing plunger injection type. According to the different shape and structure of the injection machine, it can be divided into (1) vertical injection molding machine, (2) horizontal injection machine, (3)
Read more →There are the following points for attention in the maintenance of screw tube of injection molding machine: Do not start the machine when the barrel does not reach the preset temperature. The new electric heating is generally required to reach the set temperature 30 minutes before operating the screw. If the machine stops for more than half an hour each time, it is best to close the blanking port and shoot clean the material in the cylinder, and set the insulation Avoid foreign matter falling into the barrel and damaging the screw and barrel. Prevent metal debris and debris from falling into the hopper. If the recycled material is processed, magnetic hopper should be added to prevent iron filings from entering the barrel. The use of anti-salivating
Read more →Working principle of injection molding machine With the continuous improvement and expansion of the information technology foundation, the mechanical products in various industries are gradually realizing the operation mode of intelligent production. Especially in the machinery manufacturing industry, the improvement of the performance of the product itself and the perfection of the working principle will make the product itself have more market profit share in the market. In this regard, we will talk about the working principle of injection molding machine. The working principle of the injection molding machine is similar to that of the syringe used for injection. It is a process of injecting the plastic that has been plasticized into the closed mold cavity with the thrust of the screw (or plunger) and then getting the
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What is an injection molding machine? It is the thermoplastic or thermosetting material using plastic molding mold to make plastic products of various shapes of the main molding equipment. Divided into vertica l, horizontal, full electric. The injection molding machine heats the plastic and applies high pressure to the molten plastic, causing it to shoot out and fill the mold cavity. History of injection molding machine. The injection molding machine was invented in the United States in 1872 and has a history of 130 years, but the screw injection molding machine has been developed in the past 50 years and become the most commonly used injection molding machine in the industry today. At present in the engineering plastics industry, 80% of the use of injection molding. The
Read more →How to reduce the power consumption of injection molding machines to improve their own work efficiency？ Usually, injection molding machines will have the problem of high electricity consumption, and because of what reasons? For the traditional injection molding machine, how to expand the space of energy saving? The energy consumption of the machine is mainly reflected in the following parts: (1) Electric energy consumption of hydraulic system oil pump; (2) The power consumption of the heater; (3) Power consumption of circulating cooling water pump. The power consumption of hydraulic oil pump accounts for more than 80% of the total power consumption of injection molding machine. So, what are the energy-saving transformation methods of injection molding machine?
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