Typically, the decision to choose an injection mold depends on the type of product, its design, production volume, and budget. However, even after you have all this sorted, how do you know which mold is better: mold with runner plate(2 plate) or plate mold wthout runner plate(3 plate)?   Don’t worry if you’re confused; this detailed guide will help you understand both molds’ usage, and differences.       What Is A 2 Plate Mold? This is the most fundamental mold type, frequently used to produce inexpensive plastic goods. It has a cavity, a core, and two spits at the dividing line. It goes off into space in a single stage. The runner and gate must be positioned near the dividing line using a two-plate mold.   Consequently, when using the runner, it is important to evacuate the part, and it is necessary to break it apart individually. However, you should not use two-plate molding, even if it is a simpler and less expensive alternative that can pr...

  The shrinkage rates of different plastic materials are different. Usually, the raw materials that are prone to sink marks are crystalline, such as nylon. During the injection molding process, the crystalline plastic is heated to a fluid state, with the molecules randomly arranged; when filled into the cold cavity, the plastic molecules are slowly arranged neatly to crystallize. As a result, the volume is shrunk to be smaller than the specified dimensional range, which is referred to as the “sink mark”.   The shrinkage rates of various plastic materials(mold shrinkage rate) are shown below:   Injection processing: Regarding control of the injection technology, the causes of sink marks include: insufficient pressure, excessively slow injection speed, small gate or long runner. Therefore, when using the injection molding machine, it is necessary to pay attention to the molding conditions and whether the holding pressure is enough to prevent the appearance of s...

The injection mold cooling system purpose is to ensure uniform cooling of the molded product and then eject the product out within a short period of time. The layout of the cooling channel plays an important role in the injection molding quality as well as the production cycle (cost) of a product. Influence on Quality: During the injection molding process, the cooling channel is used to control mold temperature, of which the fluctuation has a direct influence on product shrinkage, deformation, dimensional stability, mechanical strength, residue cracks and surface quality, etc. Mainly include: surface glossiness, residue stress, crystallinity and thermal flexure. Influence on Production Cycle: An injection molding cycle is mainly composed of the following steps. Reducing the cooling time means an improvement in the injection molding efficiency.   Injection Molding Cooling Types and Layout: 1,Cooling line in core /cavity inserts       2,Connecting cooling line between...

Mold sprue bush,The main runner refers to the melt flow passageway from the joint between the injection molding machine nozzle and the mold sprue bushing to the starting point of the branch runner. –The design has to minimize melt temperature drop/pressure loss.   –Adopt the cone shape design, to facilitate removal of the condensed material   Forms of The Mold Sprue Bush   Fixing Methods of the Mold Sprue Bushing   The main runner is usually located along the center line of the plastic injection mold, overlapping with the axle of the injection molding machine nozzle. In horizontal and vertical injection molding machines, the runner axle should be perpendicular to the parting surface. To facilitate removal of condensed materials from the main runner, the main runner should be designed into the cone shape, with a cone angle of 2 – 6º; the diameter of the smaller end D ＞ d + (0.5~1mm), d refers to the diameter of the injection molding machine noz...

How CNC Precision Machining Will Impact Industry 4.0   The Fourth Industrial Revolution, also known as Industry 4.0, is the fusion of advanced manufacturing techniques with digital technologies. This transformative era is underpinned by automation, data exchange, and cyber-physical systems. One vital player in this revolution is CNC (Computer Numerical Control) precision machining, an advanced manufacturing method that promises accuracy, repeatability, and superior quality. This blog post will delve into the impactful role of CNC precision machining in Industry 4.0.           Understanding CNC Precision Machining CNC precision machining is a process used in the manufacturing sector that involves the use of computers to control machine tools. This technology can be applied to various types of machinery, like lathes, mills, routers, and grinders. The precision aspect comes from the computer control, enabling the device to produce complex shapes that would be almost impossible to achieve ...