How to control the service life of dies Mold is closely related to our life. It can be said that modern people are increasingly inseparable from the use of mold products. For example, mobile phones, televisions, water cups for drinking… and the quality is so good that people doubt it. The mold time is that every time our mold is closed for production, it is called 1 mold time. How many times has a
Problems easy to occur in overmold during molding 1. Dimensional deviation When the hard glue is injected first and then the soft glue is injected, it is necessary to understand that the hard glue is shrunk in the mold design, while the soft glue is not shrunk, and the size deviation has a great relationship with mold design and part processing; Secondly, the soft rubber part usually has appearance requirements, and the size requirements
Description of injection molding parameters 1、 Drying temperature Definition: temperature required for drying polymer in advance to ensure molding quality Functions: 1. Remove water from raw materials 2. Ensure the quality of finished products Setting principle: 1. The polymer will not decompose or agglomerate (polymerize). 2. The drying time should be as short as possible and the drying temperature should be as low as possible without affecting the drying effect 3. Drying temperature and
Injection molding, also known as plastic injection molding, is an injection molding method. The advantages of the injection molding method are fast production speed, high efficiency, automatic operation, a wide variety of patterns, shapes from simple to complex, and sizes from large to small. Moreover, the product size is accurate, the product is easy to be updated, and it can form parts with complex shapes. Injection molding is applicable to mass production, products with complex
Description of basic elements of injection molding 1. Pressure The action pressure provided by the pressure system (oil pump) of the injection molding machine or the driver’s motor is mainly used in various action programs such as the injection device, the Plastic melting device, the mold opening and locking device, the ejection device, the shooting table device, and the core pulling device. After the control panel of the injection molding machine inputs relevant parameters,
Injection molding cycle Molding cycle: The molding cycle directly affects labor productivity and equipment utilization. Therefore, in the production process, the relevant time in the molding cycle should be shortened as much as possible on the premise of ensuring the quality. In the whole molding cycle, injection time and cooling time are the most important, which have a decisive impact on the quality of products. The filling time in the injection time is directly inversely
What is injection molding? Injection molding, also known as injection molding, is an injection molding method. The advantages of the injection molding method are fast production speed, high efficiency, automatic operation, a wide variety of patterns, shapes from simple to complex, and sizes from large to small. Moreover, the product size is accurate, the product is easy to be updated, and it can form parts with complex shapes. Injection molding is applicable to mass production,
How to deal with bubbles in injection molding According to the causes of bubbles, the countermeasures are as follows: 1) When the wall thickness of the product is large, the cooling speed of its outer surface is faster than that of the center part. Therefore, as the cooling proceeds, the resin in the center part shrinks while expanding to the surface, resulting in insufficient filling in the center part. This condition is called a vacuum
SPI Mold Classifications: The American Plastic Industry Institute (SPI AN-102-78) divides molds into five categories. These five types of molds have different requirements and standards, and this mold classification is only applicable to molds equipped with injection molding machines of 400 tons or less. SPI Class 101 Molds: (Rated for one million or more cycles) Mold design required. Mold base should be a minimum hardness of 280 BHN. Molding surfaces (cavities and cores) must be
The thimble in the plastic mold is easy to rust during use. At this time, if not treated, the service life of the thimble will be quickly consumed and become less durable. What should we do when the thimble gets rusty? How to deal with it correctly? How to prevent the thimble from rusting easily in the plastic mold? 1. A large part of the reason for the thimble rust in the production of plastic
Mold classification Classification by hardness: soft mold, hard mold (quenching treatment). Classified by quality grade: Grade I, Grade II, Grade III, Grade IV Classification by difficulty: Grade A, Grade B, Grade C, Grade D Classified by mold size: large, large, medium and small Definition of hard mold and soft mold 1. Mold hardness: soft mold, hard mold 1) Soft die: the die steel has been pre hardened and does not need quenching treatment, but the
Ten factors for improving die quality The mold manufacturing process is a complex process. It can only be put into use in the end from the design, processing, assembly, debugging and other steps. In the entire life cycle, the factors that affect the mold quality mainly include the following ten aspects: 1. Mold steel Several common steels Steel is the decisive factor of mold quality, and selecting reasonable steel is the top priority. The criteria
Summary of Die Technology for Side Plate of Air Conditioner Condenser 1.Condenser side plate product introduction Condenser side plate is one of the most common parts in air conditioning mold manufacturing products. Therefore, the mold has high requirements for design, short manufacturing cycle and high production efficiency; It is an important and only part for connecting radiator in air conditioning mold manufacturing. 2.The dimension requirements of condenser side plate products are as follows: (1) The
Hot runner system The hot runner is often used in our mold design. It is used more frequently in our GDM company. The hot runner system is divided into fully hot runner and semi hot runner. The design of adiabatic runner is complex, but the effect is good and the maintenance cost is very low. The micro semi hot runner is simple in structure, stable and easy to use, low in failure rate, and low
Automotive headlamp decoration frame mold design and production skills Automotive headlight decoration frame is one of the most important parts on the headlight, the appearance requirements are strict, the mold needs electroplating treatment. For the car headlamp decoration frame mold, the design should pay attention to the following points: (1) electroplated parts first to avoid welding wire, because electroplated parts have any welding wire will appear, affect the appearance of plastic parts, the design of