Automotive Injection Mold is one of the most important injection mold industry segments of KRMOLD, which helps dozens of international famous car manufacturers, including GAC Legend, BMW, Mercedes-Benz, Jaguar, Kia, Tesla and Land Rover, to complete the design, innovation, mold manufacturing and modification of automotive plastic parts injection mold services. With the need for environmental protection and energy saving, automobile lightweight has become one of the main trends in the development of world automobile design, automobile injection molds through the plastic raw materials melt injection molding into the automobile assembly required for automobile interior, exterior and functional parts and other components products, with lightweight, easy to mold, corrosion resistance, elasticity deformation, etc., to help the automobile manufacturing industry to reduce the cost of the entire vehicle and its weight, increase the vehicle payload. It helps the automobile manufacturing industry to reduce the cost and weight of the vehicle and increase the effective load of the vehicle.
Automotive injection molds are the key production tools for molding automotive parts and achieving mass production of automobiles. In automobile production more than 95% of the parts rely on mold molding, manufacturing an ordinary car needs more than 300 sets of plastic mold. Common injection mold cases include:
Interior and exterior parts injection molds: including instrument panel injection molds, door panel injection molds and center control panel injection molds, etc. The injection molded products need to be both aesthetically pleasing and functional.
1. Functional parts injection molds: including engine peripheral components (intake manifold, radiator fan), electronic equipment shell (sensors, connectors), etc.,
2. injection molded products need to meet the performance of high temperature and corrosion resistance.
3. Lightweight structural parts injection molds: through the insert injection molding process to combine metal and plastic, such as nut inserts, brackets, etc., to enhance the strength and reduce weight.
The good or bad of automotive plastic mold directly affects the appearance and performance of the car, which is increasing the professional requirements for injection mold manufacturers.KRMOLD has professional injection mold production workshop and manufacturing team, rich experience in automotive injection mold project cases, welcome to contact us.
Medical Injection Molds are highly precise molds specially designed for the production of medical devices and components by injecting medical-grade plastics into the mold cavities, which are then cooled and cured to form high-precision, sterile, and biocompatible medical components.As a professional injection mold manufacturer in China, KRMOLD is committed to providing our customers with complete production solutions. As a professional injection mold manufacturer in China, KRMOLD is committed to providing customers with complete production solutions. In the field of medical injection molds, KRMOLD strictly controls the precision of injection molds, meets the strict regulatory standards and clinical safety requirements, and achieves high efficiency in the production of injection molds, from simple shell parts to complex implant components.
KRMOLD medical injection mold features include:
1. Achieve high precision injection molding
Medical devices require extremely high dimensional accuracy, KRMOLD medical injection molds can achieve ±0.005mm or even higher accuracy to ensure product functionality and safety. Even when producing millions of products, the size, weight and shape of each part can be kept highly consistent to avoid medical errors.
2.Achieve compatibility with a wide range of medical material injection molding
KRMOLD medical injection molds can meet the polypropylene, polycarbonate, polyether ether ether ketone and silicone steel and other raw materials melt injection molding process, common medical injection molds include medical syringe injection molds, test tube injection molds and scalpel handle injection molds and so on. At the same time, medical injection molds can be applied to high temperature and high pressure sterilization, gamma sterilization, ethylene oxide sterilization and other methods to ensure the safety of medical devices.
3. A variety of injection molding process options
Medical injection molds will be designed according to different plastic parts shape and output requirements to design the appropriate injection mold using different injection molding process. The most common medical injection mold molding process includes multi-cavity mold molding process, to achieve a one-time production of multiple products (such as one out of 128), to improve the injection molding yield of medical parts products.
At the same time, medical injection molds can also be used with robot pickup, CNC post-processing, etc. to reduce manual errors and improve production efficiency.
Consumer Electronics Injection Mold is an injection molding tool designed by KRMOLD to produce parts for customers in the consumer electronics industry. By injecting thermoplastic materials into the mold cavity, high-precision, high-complexity electronic components with both functionality and aesthetics can be quickly produced. In order to meet the high requirements of the consumer electronics industry for miniaturization, lightweight, rapid iteration and surface decoration, KRMOLD has a strict control system for the design, precision and process of injection molds.
1. High-precision injection mold structure design
KRMOLD uses S136 mold steel as the raw material of the injection mold to increase the hardness to cope with the problem of easy deformation of micro-mold demolding, and is used for injection molding to produce thin-walled parts in the consumer electronics industry. The precision hot runner system reduces melt waste and ensures uniform filling to avoid shrinkage marks or weld marks caused by unbalanced flow.
2. Improve the surface treatment process of injection molds
The injection molds for electronic consumer parts use the IMD injection molding process to directly complete the transfer of metal textures, high-gloss mirrors or patterns during the injection molding process, reducing secondary processing (such as spraying), and are used for smart watch dials, touch panels and other appearance parts. KRMOLD uses precise control of injection pressure and temperature curves to eliminate weld marks and shrinkage marks to meet the surface finish requirements of electronic products.
3. The electronic consumer injection mold realizes the insert molding process
The electronic consumer injection molds produced by KRMOLD can use the insert molding injection molding process to embed metal nuts or electronic components (such as the metal contacts of the SIM card slot) during the injection molding process to enhance functional integration. The injection mold can perform intelligent mold monitoring and integrated sensors to monitor temperature, pressure, and mold clamping accuracy in real time, optimize process parameters through data feedback, and improve yield.
KRMOLD provides home appliances injection mold, helping home appliance manufacturing industry customers to provide injection molding tools for plastic parts in the home appliance industry, and providing a series of complete injection mold manufacturing services such as home appliance injection mold design, CNC processing, mold trial and modification. The design of home appliance industry injection molds is used to manufacture high-precision and high-durability plastic parts in the home appliance industry. The application areas of injection molds include injection molding of home appliance product parts such as refrigerators, washing machines, air conditioners, rice cookers, microwave ovens, vacuum cleaners, etc.
Advantages of home appliance injection molds
1. High-precision injection mold design
KRMOLD home injection molds ensure the accuracy of injection molding through the selection of raw materials and precision machining technology. The cavity and core are the core molding parts of the injection mold, which directly determine the geometric shape and details of the parts, and complex three-dimensional structures need to be realized through precision machining. The use of hot runner gating system design can reduce material waste and improve production efficiency, and meet the injection molding needs of high-precision or high-value-added home appliance parts products.
2. Applicable to a variety of raw materials for home appliance parts
The home appliance industry injection molds designed by KRMOLD are compatible with the processing requirements of a variety of raw materials for home appliance parts products, including ABS, PP, PC and PA, etc., and are often used for injection molding of TV housings, refrigerator interiors, washing machine housings, transparent parts, microwave trays, refrigerator drawers, motor gears and vacuum cleaner impellers. Improved the adaptability of plastic raw materials and injection molding processes.
3. A variety of injection molding processes are available
High-pressure injection molding: supports one-time molding of complex structures and reduces the need for secondary processing. Common examples include the runner design of the injection mold for the spray arm of a dishwasher.
High efficiency and low cost: Multi-cavity injection molds can mass-produce small parts, significantly reducing the cost per piece. Common examples include button injection molds and connector injection molds.
Surface treatment integration: Home appliance injection molds directly achieve textures or patterns through in-mold decoration (IMD) technology to avoid spraying processes. Typical examples include the imitation metal effect of air conditioner panel injection molding.
In the field of packaging industry manufacturing and molding, KRMOLD designs and manufactures injection molds for the packaging industry by analyzing the uses and characteristics of different packaging products, helping customers in the packaging industry manufacturing field to improve the efficiency of injection molding and the lightweight requirements of packaging products. Packaging injection molds quickly manufacture high-precision, large-volume packaging containers or functional components by injecting molten plastic into the mold cavity, and are widely used in packaging production in the food, daily chemical, pharmaceutical and other industries. Typical injection mold cases include bottle cap injection molds, beverage preform injection molds, and cosmetic container injection molds.
Design features of KRMODL in the field of packaging industry injection molds:
1. High-cavity mold design
Generally speaking, high production is a significant production demand in the packaging industry manufacturing field. When producing packaging industry injection molds, KRMODL will focus on high-cavity design to increase the output of packaging industry products and reduce unit costs. The design of high-cavity injection molds needs to ensure that the melt in each cavity is evenly distributed. KRMOLD uses a hot runner balanced gating system to avoid product weight differences. Typical case: Bottle cap injection mold adopts multi-cavity mold design to achieve 128 injection molding efficiency.
2. Precision gate design
KRMOLD packaging industry injection mold adopts precision mold gate design. Common gates include pin gate to meet the injection molding needs of small packaging products, valve hot runner gate to achieve high-precision packaging industry product injection molding to prevent flow marks, and side gate mold design is suitable for square and special-shaped containers. When designing the injection mold, it is necessary to ensure that the gate position is uniform to prevent warping and deformation. Generally speaking, injection molds in the micro-packaging industry use small diameter gates to reduce residual marks and improve aesthetics.
3. Rapid cooling system of injection molds
In order to achieve the production needs of large-scale injection molding, the injection molds in the packaging industry need to optimize the cooling system of the injection mold in addition to the design of multi-cavity molds. The cooling time accounts for 70%~80% of the entire injection cycle, so optimizing the cooling system can greatly improve production efficiency. Generally speaking, the direction of injection mold design optimization includes water cooling (Water Cooling) for thin-walled products, high thermal conductivity materials (such as beryllium copper inserts) for local high heat areas, such as the threads of bottle caps. Gas Cooling (Gas Cooling): Applicable to products with special shapes to reduce the problem of uneven cooling.
KRMOLD is committed to providing complete injection mold production solutions for customers from all walks of life. In addition to injection molds for the automotive industry, medical industry, consumer electronics industry, and home appliance industry, KRMOLD can also provide customized injection mold products for customers in the aviation and navigation fields and agricultural manufacturing equipment fields.
According to the plastic parts products produced according to the needs of customers, KRMOLD conducts modeling analysis, mold design, CNC machine tool precision machining, EDM electric spark machining, wire cutting machine machining, polishing and other injection mold design, manufacturing and surface treatment processes. KRMODL's precision injection mold production cases in various industries ensure professionalism in the field of injection mold design and manufacturing, and pay more attention to analyzing customers' actual production needs, including product application areas, environment, output and precision requirements, to design and produce injection molds.
In the fields of aviation, navigation and agricultural equipment manufacturing, injection molds need to adapt to extreme environments, high reliability and complex functional requirements. KRMOLD provides customized plastic injection molds with the following characteristics:
1. High strength and high temperature resistance of injection molds
Aviation molds need to withstand extreme loads, and the materials need to have high strength and high rigidity, and withstand high temperature environments. Navigation equipment molds need to be resistant to salt spray corrosion, and corrosion-resistant alloys or surface coating treatment materials are often used. Injection molds for parts of agricultural equipment that contact soil or crops must use non-toxic, chemically resistant materials and meet environmental regulations.
2. Complex structural design of injection molds
Aviation molds need to achieve micron-level precision, and the cavity structure mostly uses multi-curved surfaces and microporous heat dissipation structures, which rely on EDM or five-axis CNC machine tools. Agricultural molds need to take into account both functionality and durability. For example, the seeder mold needs to integrate a seed channel and a wear-resistant buckle structure. The mold is manufactured using laser melting deposition technology, and conformal cooling channels are integrated to shorten the cooling cycle by more than 30% and reduce the risk of deformation.
3. Increased service life of injection molds
Aviation molds need to withstand high-frequency stress cycles, and special heat treatment processes are used to improve fatigue resistance. The mold life is required to reach more than 1 million times. Agricultural molds are frequently exposed to abrasive particles, so surface hardening treatment (such as nitriding coating) is required to extend the service life.
The injection molds designed and manufactured by KRMODL can meet the production needs of various different injection molding processes and meet the customized needs of customers in different industries for injection molding of plastic parts in terms of precision, output, shape, etc. Common injection molding processes include:
1.Conventional Injection Molding
The most common injection molding process, suitable for general plastic products. By melting plastic particles in a heated screw, the molten plastic is injected into the injection mold cavity through a nozzle, and the cooling water channel in the mold cools the plastic to solidify it, and the ejector or robot removes the injection molded plastic product.
2.Thin-wall Injection Molding
The injection mold uses thin-wall injection molding technology to produce plastic products with a wall thickness of less than 0.6mm. Common examples of injection molding molds include food packaging boxes and mobile phone cases. The thin-wall injection molding process requires high pressure and high-speed injection to ensure that the plastic completely fills the mold. At the same time, high requirements are placed on the injection mold cooling system to ensure that the product does not deform.
3.Two-shot Injection Molding
Two-shot Injection Molding is used to mold two or more colors/materials in one injection molding to improve the aesthetics and functionality of the product. Common injection molding processes include:
Turntable two-shot injection molding: the mold rotates 90°/180° to complete two injection moldings.
Stack Mold: two mold combinations to inject multiple materials at one time.
Insert two-shot injection molding: first inject one material and then coat another material.
4.Gas-assisted Injection Molding
The gas-assisted injection molding process uses high-pressure gas to blow into the cavity to form a hollow structure for the product and reduce material usage. This type of injection mold is suitable for thick-walled products to prevent dents and deformation, reduce product weight, and reduce material costs.
In addition, common injection molding processes include Overmolding, Multi Cavity Injection Molding, and Micro Molding.
The injection molds designed and produced by KRMODL are compatible with a variety of different types of raw material processing requirements, such as PP/PPE Injection Molding, ABS Injection Molding, PC Injection Molding, TPU/TPE Injection Molding, PEEK/PEI Injection Molding and Silicone Rubber Molded. Common injection molding raw materials and mold features:
1.ABS
Excellent overall performance, impact resistance, heat resistance and easy processing, low shrinkage. For ABS raw material injection molding design, attention should be paid to the design of the gating system and cooling system. The runner should be short and thick. The gate can be selected from the side gate, point gate or latent gate to balance the fluidity and surface quality. The cooling water channel should be evenly distributed, 10-15mm away from the cavity surface to avoid interference with the ejection mechanism.
2.PP
Semi-crystalline material, excellent fluidity, high shrinkage, chemical corrosion resistance but poor high temperature resistance. When designing injection molds, it is necessary to avoid direct gates. Needle gates or hot runners are recommended. The raw materials of injection molds are usually pre-hardened steel or aluminum alloy. Nitrided steel can be selected when wear resistance is high.
3. PC
High transparency and strong impact resistance, but high melt viscosity, easy hydrolysis, and narrow molding temperature range. The runners and gates of the injection mold need to be wide. Fan-shaped gates are recommended to reduce flow resistance. The mold material usually chooses S136 high mirror polished mold steel, and avoids the use of release agents to prevent surface defects.
