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How does a plastic injection mold work?

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1. Injection steps: The raw material is melted by the high-speed rotation of the screw. The rotation speed is critical to the melting. If it is too slow, the plastic will not melt enough and if it is too fast, the plastic will be carbonized. Of course, the barrel is also important for heating. After the raw material is melted, the melted material is injected into the mold. It also requires an injection molding machine to provide injection pressure to inject molten raw materials into the mold. Then it takes some time to hold the pressure. After that, cool the mold and close the gate of the mold. Finally, the mold is cooled by air and water. Picking up the product: This is the last step. Some customers need a robot to pick up the product, and some let the product fall off automatically after molding. Mainstream Road It is a passage in the mold that connects the injection nozzle of the injection machine to the runner or cavity. The top of the main flow channel is concave
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What's the way to solve the problem of too high temperature of injection molding machine?

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Common reasons for the temperature rise of TPE injection molding machines include the following: (1) The volume of the oil tank of the  injection molding  machine is too small, the heat dissipation area is insufficient, and the cooling device has a small capacity. (2) The fixed pump oil supply system that selects the oil pump capacity according to the fast forward speed, the excess flow will return from the relief valve under high pressure and generate heat during work. (3) The unloading circuit in the system fails or because the unloading circuit is not set, the oil pump cannot be unloaded when it stops working, and the entire flow of the pump overflows under high pressure. Overflow loss occurs and heat is generated, resulting in excessive temperature. (4) The system piping is too thin and long, too much bending, local pressure loss and pressure loss along the process are large. (5) Insufficient component accuracy and poor assembly quality, and large mechanical fric
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What is sheet metal fabrication?

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The processing of metallic plates is sheet metal processing. For example, using sheet materials can be processed into products of various shapes such as chimneys, iron barrels, oil pots, etc. as we know. Sheet metal processing is more and more favored by users. It will evolve the shells we used to make from plastic through the special processing methods of sheet metal to evolve into sheet metal. This way, the processed products are stronger than before. Good, and long use time. Sheet metal processing methods include: non-mold processing and mold processing. Although their processing processes are similar, they can't escape the following points. Let's talk about the processing steps of sheet metal processing: 1. The design department designed the parts and components pictures according to the requirements, and developed them one by one in 3D to facilitate the processing department's processing, and fully demonstrated the specific structure of the sheet metal parts
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What is steel forging?

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What is forging? Upset forging: A method of forming and processing plastic parts, including workpieces, tools, or blanks, by applying external force to metal blanks (excluding plates) to cause plastic deformation, change size, shape, and improve performance. Types and characteristics of  steel forging When the temperature exceeds 300-400 ℃ (blue brittle zone of steel) and reaches 700-800 ℃, the deformation resistance will decrease sharply and the deformation energy will be greatly improved. According to the forging performed in different temperature regions, according to the different forging quality and forging process requirements, it can be divided into three forming temperature regions: cold forging, warm forging, and hot forging. Originally, there was no strict limit on the division of this temperature region. Generally speaking, forging in a temperature region with recrystallization is called hot forging, and forging without heating at room temperature is called c
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Solution for pipe bending defects

In order to prevent or reduce the occurrence of  bending pipel  defects and obtain satisfactory bending pipe quality, corresponding actions should be taken in the process of bending pipe. First of all, in the scope allowed by the product design structure, the bent pipe fittings should be designed with a large bending radius as much as possible. At the same time, when selecting equipment, the pipe bending machine with side boosting and tail pushing mechanism should be the first choice. Under normal circumstances, for the several common defects mentioned above, measures should be taken in a targeted manner. The specific methods can be as follows: For pipe fittings with severe flatten outside the arc, the compacting die (wheel) can be designed to have an anti-deformation groove in the form of a coreless bend to reduce or eliminate the degree of flatten when the pipe is bent. For cored bends, when the diameter of the mandrel is too small or with serious abrasion, the appropriate mandr
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Introduction of Free Forging Products

Free forging  is to use impact force or pressure to make the metal deform freely in all directions between the upper and lower anvil surfaces, it is a method of processing forgings with required shape and size and certain mechanical properties by any restriction. The basic purpose of free forging is to obtain the required shape, size and internal quality of forgings economically. The types of forgings are large and medium-sized forgings. Small forgings are mainly formed with rolling materials, large forgings (especially important parts) and special steels to improve internal quality. Ingot is the main material. After forging, coarse grains are broken, non-metallic inclusions and heterogeneous particles are dispersed, internal defects are forged, the density is high, streamline distribution is reasonable, and comprehensive mechanical properties are greatly improved. Common defects in ingots are segregation, inclusions, bubbles, shrinkage, porosity, cracks, etc. Free forging equi
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Introduction to machining process

1.Lathes Lathes are machine tools designed primarily to do turning, facing and boring. Turning is rarely done on other types of machine tools, and none can do it better than lathes. Because lathes also can do drilling and reaming, and their versatility permits several operations to be done with a single setup of the work piece. Therefore, more lathes of various types are used in manufacturing than any other machine tool.The essential components of a lathe are the bed, headstock assembly, tailstock assembly, the leads crew and feed rod. The bed is the backbone of a lathe. It usually is made of well normalized or aged gray or nodular cast iron and provides s heavy, rigid frame on which all the other basic components are mounted. Two sets of parallel, longitudinal rails, inner and outer, are contained on the bed, usually on the upper side. Some makers use an inverted V-shape for all four rails, whereas others utilize one inverted V and one flat rail in one or both sets. They are precisi
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