Name: China Custom Plastic Mould Core Suppliers, Manufacturers, Factory - KEGAO
Brand: Kegao
SKU: 240093089

Company Profile

Kegao attaches great importance to team construction and investment of precision equipment. Moreover, the company has strong technical force, complete equipment and advanced technology, such as Mitsubishi and Sodick EDM machine, Japan Mitsubishi and SEIBUOPE Wire Cutting machine, WAIDA-SPG-X Optical Grinding, MAZAK and TAKISAWA CNC Lathe, MAKINO CNC Machining Center, surface grinding machine, centerless grinding machine, ladder grinding machine, outer diameter/inner hole grinding machine.

Why Choose Us

01/

Professional Team
We have introduced a group of senior technicians with production Europe and Japan precision parts experience.

02/

Advanced Equipment
Inspection Equipment include Hexagon three-dimensional detector, Nikon projector, Mitutoyo 2.5D tool microscope, Swiss TRIMOS height gage, Nikon height gage and Hardness Tester for test and measurement.

03/

Rich Experience
Our company has many years of production work experience. The concept of customer-oriented and win-win cooperation makes the company more mature and stronger.

04/

High Quality
Our products have been widely applied in many fields, such as precision medical mould, connector mould, various types of cosmetic mould, PET preform mould, medical apparatus & instruments, jig, etc.

KEGAO Mold High Performance Precision Injection Mold Components

KEGAO Mold High Performance Precision Injection Mold Components This is Dongguan kegao precision technology co, .Ltd, founded in 2007, our business is providing plastic moulds,mold precision parts and PC connector

Electrical Discharge Machining Parts CNC Parts

Electrical discharge machining parts CNC Parts Dongguan KEGAO Precision Technology Co.Ltd. is A Precision machining company specialized in CNC machining parts

Medical Device Injection Mold

Injection molding part producing device for use in injection molding machine, has injection molds with half-molds that are attached on mold support, where separate temperature adjustment is provided for mold support and half-molds

High Precision CNC Turning Parts Mould Parts

High Precision CNC Turning parts Mould Parts KEGAO Precision Technology Co.Ltd is a company engaged in the engineering and manufacture of high-precision custom solutions.

Mould Parts Medical Tool Parts

Mould Parts Medical tool parts Kegao is a company have it's own factory which have been researched and produced precision mould for daily goods, cosmetic, connector, medical and motor for 15 years.

Stainless Steel Precision Non-Standard Round Parts

Stainless steel precision non-standard round parts Sophia Liew Sales representative Dongguan Kegao Precision Technology Co.

Plastic And Metal Mould Spare Parts Mould Accessory CNC Parts

KEGAO offers Plastic Mould Components, Connector Mould Parts, Non-standard Round Parts, Standard mould parts, Non-standard|custom round parts, CNC machining, Metal Mould and Plastic Mould.

Chinese High Precision Mould Parts

The KEGAO team includes experienced CNC machining technician also tooling and molding engineers, and manufacturing experts who are dedicated to pushing the manufacturing Precision envelope.

Medical Packaging Dairy Packaging Cosmetic Packaging Bottle Jar Caps Precision Mould Parts

Kegao has ten kinds of utility model patent certificates: 1. A self-ejection injection mold for runner residual material 2. A secondary ejection structure of the flip-chip front mold

What is Plastic Mould Core?

Plastic mould core, also known as the sand core, is the filler used to create the inner cavity shape of castings, and it comes in three varieties: inner sand core, outer core, and sand filling core. The inner sand core is used to create the inner cavity of the casting, and the outer core box supplements the sand core. The sand core is necessary for parts that cannot be drawn and manufactured directly.

The core and cavity in the mold are different. The machining of the core is on the outer surface, and the processing of the cavity works on the inner surface. The material of the core and cavity shall have good polishing, wear resistance, corrosion resistance, and machinability.

Benefits of Plastic Mould Core

Complex Geometries
Cores allow for the creation of intricate shapes and internal structures within the part, which would be challenging to mold directly.

High Precision
Cores can be manufactured to very high tolerances, ensuring precise dimensions and features in the final product.

Enhanced Product Quality
The ability to create complex shapes and features can lead to improved product functionality and aesthetics.

Material Savings
With the ability to create hollow parts, less material is used, leading to cost savings and potentially lighter parts.

Faster Cycle Times
The use of cores can streamline the production process, resulting in faster cycle times and increased productivity.

Improved Strength and Rigidity
In some cases, cores can be designed to add structural support to the part, enhancing its strength and rigidity.

Types of Plastic Mould Core

Fixed Cores

These cores remain stationary within the mold and do not move during the mold process. Fixed cores are commonly used for simpler part geometries where the removal of the core is not necessary.

Movable Cores

Unlike fixed cores, movable cores can be retracted or rotated within the mold to facilitate the ejection of the finished part. This type is often employed in complex designs that require undercuts or internal features.

Hydraulic Cores

These cores use hydraulic systems to move within the mold. Hydraulic cores are ideal for large-scale production where precision and speed are paramount.

Rotating Cores

Employed in rotational molding, rotating cores enable the production of hollow parts. The mold rotates while the material is distributed, creating a uniform layer within the mold.

How To Inspect Plastic Mould Core Quality?

Before using the depth micrometer, ensure it is thoroughly cleaned, and then examine its moving parts to ensure that they are both flexible and reliable. Specifically, the differential cylinder should rotate flexibly during the complete stroke, the differential screw should move steadily, and the locking device should function reliably.

Determine if the depth or height was measured first, then choose whether to replace or keep the measuring rod.

Rotate the differential cylinder to make its end face fall outside the zero line of the fixed sleeve. Stick the micrometer's datum plane on the platform's working surface, press the base with the left hand, and slowly rotate the ratchet with the right hand. The 0-25mm depth micrometer can directly check the zero position. So when the measuring surface has made contact with the working surface of the platform, check that the zero position is correct by ensuring that the zero graduation line on the differential cylinder is aligned with the vertical graduation line on the fixed sleeve and that the end face of the cone surface of the differential cylinder is tangent to the zero graduation line of the sleeve.

The zero position of depth micrometers with a measuring range of more than 25 mm must be checked using a check gauge (which can be replaced by a gauge block) in the following manner: the working surfaces of the check gauge and the platform must be wiped clean; the check gauge must then be placed on the platform; and the datum plane of the depth micrometer must then adhere to the zero position of the check gauge.

When using a depth micrometer to measure blind holes and deep grooves, the bottom of the hole or groove is frequently not visible; therefore, extreme caution should be exercised when operating the depth micrometer, and force should be applied only when necessary.

For measurements of holes with diameters or slot widths that are bigger than the base of the depth micrometer, an auxiliary positioning reference plate may be utilized in place of the base of the depth micrometer.

Application of Plastic Mould Core

The parts that form the product space are called molding parts (i.e. the entire mold), and the (mold) parts that form the inner surface of the product are called cores, also known as sub-molds or back molds. From the appearance of the product mold, the convex part is the core, and the concave part is the cavity. The core and cavity appear in pairs. The cavity and core of the mold are molded together, and the space formed by them is the shape of the mold product.

1. Concave mold and mold sleeve Concave mold is also called female mold. The outer shape of the concave mold is usually round or rectangular. The fewer its combined parts, the more secure it is in use. However, for many parts, the concave mold cannot be used as a whole. It is often made into a combined type for easy processing. The mold sleeve is a component used to clamp the concave mold or the convex molded parts.

2. Punch The punch (also known as the male mold) is the inner surface molding part of the part. It is often composed of a whole or several parts of the mosaic structure. Its function is to transfer the pressure of the press to the plastic to make the plastic parts dense.

3. Cores and inserts Cores are parts that form through holes or blind holes when plastic parts are molded. There are two types of cores: fixed and movable.

4. Threaded cores and threaded rings
Threaded cores are designed to form threaded holes in plastic parts. They can also be used to connect or fix threaded and spring threaded inserts pressed into parts.

Which Production Quality Will Affect The Plastic Mould Core Problem

Core Shift
During the injection molding process, a phenomenon known as core shift can take place if the plastic mould core moves or shifts from the position it was supposed to be in. This can lead to the final molded object having improper alignment or dimensional accuracy issues.

Sticking
The term "sticking" describes the phenomenon in which, during the ejection process, the plastic mould core remains lodged within the molded item. It may result from insufficient draft angles, inadequate release agents, or excessive friction between the plastic mould core and the part material.

Warping
Plastic mould cores are susceptible to warping, particularly when they are put through conditions in which they are exposed to high temperatures and repeated pressure cycles. Warping can result in dimensional distortions, affecting the molded components' accuracy and operation.

Cracking Or Breakage
Due to the tensions and pressures inherent in the injection molding process, plastic mould cores made from less durable or unsuitable materials may exhibit a higher susceptibility to cracking or breaking compared to other mold components. Consequently, this can result in compromised part quality and substantial mold damage.

Wear And Tear
The plastic mould cores are subject to use and abuse whenever they are put through numerous cycles or used continuously. Over time, a core may suffer from abrasion, erosion, and fatigue, resulting in a decline in the surface quality, dimensional integrity, and overall performance of the core.

Problems Associated With Cooling
Plastic mould cores can experience issues associated with cooling, such as insufficient cooling or incorrect heat transmission. If there is not enough cooling, the cycle durations will be longer, the part quality will be poor, and there is a possibility that there may be warping or dimensional changes.

Problems With Venting
Plastic mould cores need correct venting to release any trapped air and gases during the injection process. When vents are inadequate or clogged, air can become entrapped, leading to surface flaws, voids, or an insufficient part filling.

Challenges In Maintenance
To maintain their best performance, we should regularly clean, inspect, and maintain the plastic mould cores. Inadequate maintenance of the plastic mould cores over time might result in problems such as corrosion, contamination, or deterioration.

How to Maintain Plastic Mould Core

Plastic mould core are one of the major parts of plastic injection molding projects. The suitability and quality of molds are highly significant in your plastic mould core process. A well-designed mold makes a difference in the overall cost of injection molding. Routine maintenance of plastic mould core is vital to protect your investment. Nowadays, automated software facilitates the maintenance and operations of molds.

Like other tools and machinery, your plastic mould core undergoes depreciation. However, the rate of depreciation varies with the maintenance and way of use.

Routine maintenance ensures that you can make the best use of the Plastic Mould Core. With regular maintenance, your regular operation does not cause stress to your plastic mould core. It is important to set some rules to guide mold maintenance and operation.

Daily maintenance does not take much time. You need to dismantle the molds, and the spare molds have to be made ready during the maintenance task. It ensures reduced downtime at the time of producing parts.

Our Factory

R&D, production and sales, automation equipment and accessories, mold accessories, hardware accessories, punch products, plastic products.
Our products have been widely applied in many fields, such as precision medical mould, connector mould, various types of cosmetic mould, PET preform mould, medical apparatus & instruments, jig, etc.

FAQ

Q: What is a plastic mould core?

A: A plastic mould core is a separate, removable part of an injection mould that forms complex, internal features or shapes within a plastic part. It allows for the creation of undercuts, intricate details, and hollow areas that would be difficult to achieve with a single mould.

Q: How does the inclusion of a mould core affect the design of a plastic part?

A: Using a mould core can greatly expand the design possibilities for plastic parts, allowing for more complex geometries and features. However, it also requires careful consideration of the part'sassembly, function, and aesthetics, as the core will eventually be removed.

Q: What materials are typically used to manufacture mould cores?

A: Mould cores are typically made from high-strength, wear-resistant materials such as hardened steel or aluminium. The specific material choice depends on the requirements of the application, including the type of plastic being moulded, the desired cycle time, and the complexity of the part.

Q: Can mould cores be used with all types of injection moulding machines?

A: Yes, mould cores can be used with most types of injection moulding machines, although some machines may require modifications or specialized setups to accommodate the core.

Q: What are the common machining processes used to create mould cores?

A: Mould cores are typically created through machining processes such as CNC milling, EDM (electrical discharge machining), or laser cutting. The choice of machining process depends on the complexity and precision required for the core.

Q: How are mould cores aligned within the injection mould to ensure precision?

A: Mould cores are aligned within the injection mould using precision locating pins and bushings. These alignment features ensure that the core is properly positioned in relation to the cavity, allowing for consistent and accurate part formation.

Q: What are the standard tolerances for mould cores, and how are they maintained?

A: The tolerances for mould cores depend on the requirements of the application and the type of plastic being moulded. Standard tolerances are typically in the range of ±0.005 mm to ±0.010 mm. To maintain these tolerances, mould cores are stored and handled carefully to prevent damage or deformation.

Q: Can mould cores accommodate complex geometries or undercuts?

A: Yes, mould cores are specifically designed to accommodate complex geometries and undercuts. They can be machined to precise dimensions and shapes to form intricate features within the plastic part.

Q: What is the typical lifespan of a mould core, and how is it influenced by usage?

A: The lifespan of a mould core depends on several factors, including the material of the core, the type of plastic being moulded, the cycle time, and the level of maintenance provided. With proper care and maintenance, a high-quality mould core can last for thousands of cycles.

Q: What maintenance procedures are recommended for mould cores to prolong their service life?

A: Regular cleaning and lubrication of the mould core are recommended to prevent corrosion and wear. Additionally, the core should be inspected regularly for signs of damage or wear, and replaced if necessary. Proper storage and handling of the core are also important to prevent damage or deformation.

Q: How do environmental conditions like temperature and humidity affect mould core performance?

A: Extreme temperatures and humidity levels can negatively affect the performance of mould cores. High temperatures can cause the core to expand, while low temperatures can cause it to contract. Humidity can lead to corrosion and rust. Therefore, it is important to store mould cores in a controlled environment with stable temperature and humidity levels.

Q: Are mould cores recyclable or reusable?

A: Yes, mould cores are typically recyclable or reusable. After their service life, they can be melted down and reprocessed into new cores or other steel products. However, the recycling process may vary depending on the material of the core and local recycling facilities.

Q: How do mould cores affect the injection moulding cycle time?

A: Mould cores can slightly increase the injection moulding cycle time due to the additional time required to insert and remove the core. However, the overall cycle time may still be reduced due to the improved part quality and reduced scrap rates associated with using mould cores.

Q: What design factors should be considered when incorporating a mould core into a part?

A: When incorporating a mould core into a part, it is important to consider the part's function, assembly, and aesthetics. The core must be designed to create the desired feature while minimizing stress concentrations and ensuring proper ejection of the part. Additionally, the core must be accessible for removal and inspection after the moulding process.

Q: How do mould cores influence the surface finish of injection-moulded parts?

A: Mould cores can affect the surface finish of injection-moulded parts depending on their material and finish. A high-quality, polished core can result in a smooth, glossy surface on the part. Conversely, a rough or improperly finished core can result in visible defects or imperfections on the part's surface.

Q: Can mould cores be used with other moulding technologies?

A: Yes, mould cores can be used with other moulding technologies, such as overmoulding or multi-component injection moulding. However, special considerations may be required to ensure proper alignment and ejection of the core during the moulding process. It is important to consult with a qualified mould maker or injection moulding expert to ensure a successful implementation.

Q: What are the best practices for the storage and transportation of mould cores?

A: To ensure the longevity and performance of mould cores, they should be stored in a clean, dry environment with stable temperature and humidity levels. They should be protected from physical damage during transportation and handling, and stored on shelves or racks that allow for proper air circulation. Additionally, it is important to keep mould cores separate from other metal objects to prevent corrosion or rust.

Q: How do different plastics affect the choice and use of mould cores?

A: Different plastics have varying properties that can affect the choice and use of mould cores. For example, some plastics may require a higher temperature or pressure setting on the injection moulding machine, which can affect the performance of the core. Additionally, certain plastics may be more abrasive or prone to sticking, requiring a more durable or release-enhancing core material. It is important to consult with a qualified mould maker or injection moulding expert to determine the appropriate core material and settings for the specific plastic being moulded.

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