B-F Mold Technology Co., Ltd is a group of professional plastic mould engineering and manufacturing companies, providing excellent solutions for various industries, and taking innovation, expertise and quality control as the backbone of our business core and provide our customers with a comprehensive end-to-end service for any product, engineering or manufacturing need. The company was established in 2010 and grown up to a medium mold making company with 95 employees and a 4500 square meters tool building shop .The average mold design and building experience of our designer and mold maker isover 10 years. Automotive interior and exterior trim, medical mold, home plastic, cosmetic mold, compression mold.
Why Choose Us
Our Factory
The company was established in 2010 and grown up to a medium mold making company with 95 employees and a 4500 square meters tool building shop .The average mold design and building experience of our designer and mold maker isover 10 years.
Our Product
Automotive interior and exterior trim, medical mold, home plastic, cosmetic mold, compression mold, Product Application, Injection mold & molding, Overmold & 2K Mold, IML Molds(In-Mold Label), Cube Molds, Stack Mold (T Molds), Insert Tooling, Rubber/ Slicon mould, Compression molds baby plastic molds.
Our Service
We provide excellent solutions for various industries, and taking innovation, expertise and quality control as the backbone of our business core and provide our customers with a comprehensive end-to-end service for any product, engineering or manufacturing need.
Our Certificate
GB/ T9001：2016，ISO 9001：2015， ISO9001.
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Mold Components Machining Includes
Plastic Mold Insert
What Is Plastic Mold Insert
Plastic mold insert is a cutting-edge technique in today's plastic mold creation. The cavity is dispersed on two or more layers and is overlaid, which is similar to assembling numerous pairs of molds. The historical context of the lamination mold's need typically, when an injection machine utilizes a single-layer plastic injection mold, the injection volume and mold opening process are only 20% to 40% of the prescribed amount, which limits the injection machine's performance, and the lamination injection mold cannot enhance the clamping force. With a single injection machine and operator, the output may be multiplied depending on the number of layers, significantly increasing production efficiency and equipment utilization rate while lowering production costs and human resource requirements. The stack injection mold is ideal for manufacturing big flat components, shallow cavity shell components, compact multi-cavity thin-wall components, and mass production components.
Advantages of Plastic Mold Insert
The plastic mold insert locking force is raised
When compared to traditional molds, the plastic mold insert locking force is raised by 10% to 15%, while the output may be enhanced by 90% to 95%;
Reduces the mold manufacturing cycle
The mold production requirements are almost identical to those for traditional molds, and the combination of several cavities in a mold significantly reduces the mold manufacturing cycle;
Production efficiency per unit time is doubled
While the plastic mold insert meets the same standards as the single-layer mold, the production efficiency per unit time is doubled.
Reduce raw material costs
Reduce raw material costs, facilitate automation, enhance product performance, and reduce production cycles.
Insert molding and overmolding are two distinctly different processes that produce their own unique types of products. The overmolding process takes place when one material is overmolded over a second material. The base layer is molded first and the additional plastic layer(s) are molded over and around the original part. This results in a single finished product. Overmolding creates a strong finished product with long service life and enhanced safety features. Conversely, insert injection molding occurs when insert injection materials are injected into the mold cavity prior to plastic injection molding. The resulting product is a single piece with the insert encapsulated by the plastic. Plastic injection inserts provide a fast and cost-effective assembly process, producing parts with reduced size and weight.
The experienced staff are experts at the insert injection molding process. They have the capabilities to take insert injection materials and create plastic injection inserts from those materials. However, there are certain factors that should be considered before making a final decision regarding the insert molding process. The insert molding costs must be weighed, including the insert and tooling costs. The inserts themselves also need to be able to withstand the injection molding process, as some pressures and temperatures can damage them. Means to hold the insert during the molding process. Bosses or undercuts that provide additional retention strength within the molded part. Understanding which specific components and technologies are combined into a single component within the insert injection molding process.
Applications of Plastic Mold Insert
Aerospace
The aerospace industry uses the insert injection molding process for seating aircraft, making stowage bin latches, lavatories, handles, and user interface switches. Insert molding also helps create other aircraft parts, including interiors, communication, and controls. Besides, using insert molding for making these aircraft components offers the aerospace industry several benefits, including; a reduction in aircraft weight. It also improves the strength and durability of aircraft components while reducing manufacturing and assembly time. Another benefit the aerospace sector derives from insert molding is an improvement and enhancement in industrial design.
Automotive
The automotive industry is another industry with a huge insert molding adoption. In this industry, insert molding allows manufacturers to replace metal parts with more durable plastic ones. Moreover, this replacement results in the production of lightweight automotive parts or components, thereby improving fuel economy. It also reduces part assembly and labor costs while increasing design reliability and flexibility.
Medical Devices
The health sector is another major benefactor of the process. The process can produce medical devices ranging from simple ones to even intricate and sensitive ones like sutures and implants. Also, insert injection molding facilitates the production of some electronic devices used in the medical industry. Common examples of insert molding in the medical industry include the production of tubes, medical equipment components, and dental instruments. Other applications include prosthetics, medical knobs, blades, surgical instruments, and medical enclosures.
Consumer Electronics
The consumer electronic industry uses insert molding as it boycotts the use of fasteners and solders during manufacturing, making assembly a more seamless process. There are several uses of insert molding in the consumer electronics industry. For instance, the encapsulation of threaded inserts and wire plugs are perfect examples of the application of insert molding in this industry. Other examples include producing digital control panels, and assemblies, making knobs for appliances, making military equipment, and threaded fasteners.
Steps For The Plastic Mold Insert Process
Load Selected Inserts Into The Mold
It would help if you considered the positioning of inserts within the molds when designing the molds for the process. It helps to ensure the insert maintains its orientation and position throughout the molding process. There are two ways of loading inserts into the mold: “automated insertion” and “insertion by hand.” automatic insertion is more precise, consistent, and efficient. It uses robots or automated mechanisms that can resist high-temperature levels to load insert components into the mold. As such, manufacturers often benefit from faster turnaround times since the computerized machines are fast and can mold more parts per hour.
Inject The Molten Plastic Into The Mold
You must use an injection unit to deposit the molten material into the mold under high pressure. The applied pressure forces the molten plastic to fill the mold evenly. As such, it pushes out air through the vents present in the mold, ensuring the plastic bonds firmly and entirely to the inserts.
Open The Mold And Eject The Molded Part After Cooling
While the molten plastic has filled the mold evenly, it would be best to maintain a set temperature to allow consistent solidification. You must maintain a holding pressure to mitigate potential shrinking effects while preventing backflow into the barrel. However, the mold opens when cooled and allows the removal of the insert-molded part.
Separate The Molded Part From The Sprues
Molded parts often get attached to the sprues that helped form them. These sprues are like structures or frames that ensure all components of the molded part are made. You must detach the molded part from the sprue to use the part. However, be more careful when separating the sprues to avoid damaging or affecting the molded part.
Post-molding Operations
Plastic molds often require certain post-processing operations after molding before they are ready for the market. Amongst the common post-processing treatments widely used for inserting molded
Injection Mold Core
What Is Injection Mold Core
Injection mold 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 mold core is a solid or movable component within the mold that forms the internal features or voids of the final molded part. It represents the shape and geometry of the desired internal features of the part. The core is typically mounted or positioned inside the mold cavity and is responsible for creating the hollow or interior portions of the molded part. The core can be fixed in place or designed to move or retract to facilitate part ejection.
Advantages of Injection Mold Core
Complex part design
Injection mold core enables the production of intricate parts with undercuts, threads, and internal features, expanding design possibilities.
Enhanced aesthetics
Smooth surface finishes and precise detailing are achievable with injection mold core, enhancing the visual appeal of the molded parts.
Functionality improvement
Injection mold core allows for the creation of parts with superior functionality, such as snap-fit assemblies and interlocking components.
Cost efficiency
Injection mold core eliminates the need for secondary operations, reducing production costs and lead times.
Ways To Prevent Defective And Waste Production of Injection Mold Core
Once you understand what a mold core is and its importance in manufacturing high-quality products ready to use, it’s crucial to be familiar with ways to inspect the quality of the mold core. Besides, if you don’t use high-quality mold core or maintain the core quality when using it in a plastic injection mold for manufacturing, it can result in defective and waste production.
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. Use the 00-level platform to clean the platform, the datum plane, and the measuring surface of the depth micrometer. 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.
What Affects Injection Mold Core Placement?
Part Shape
The shape, but many injection molded parts are highly complex. The part shape will not only determine where to place the core and cavity in the mold but also where ejector pins, cooling channels, and other necessary components go (which in turn affect core and cavity placement, etc.). Also, uniform wall thickness is a priority in part shape, as variable wall thicknesses will cause issues in both cooling and ejection.
Ejector System
When the mold is opened after the cooling stage, the injection molded part must always be stuck to the side of the mold with the ejector pins. The ejector system and its specific shapes will affect where the core and cavity are placed, such that consistent, repeatable ejection is achieved.
Material
The shrink rate, flow characteristics, and injection speed of the material will partially dictate how the core and cavity are arranged. If a material has a low shrink rate, it will be more challenging to get the part to stick to the ejector pin side, therefore calling for design considerations. Luckily most plastics do shrink considerably, but it is important to understand how the material could potentially affect where the core and cavity should go.
Gates, Runners, And Sprues
The sprue is the primary channel from the injection molding nozzle that feeds plastic into the mold cavity. It is typically perpendicular to the mold cavity’s axis but can sometimes be directly piped into the cavity (in that instance, the sprue is known as a direct sprue gate). Runners are the channels that feed multiple mold cavities with molten plastic from the sprue. Most injection molds use runners as it is more economical to mold multiple parts in one cycle (especially in the case of small parts such as model kit parts, for example). Gates are the entry points from the runner into the core and cavity and are typically much narrower than the runner.
The Importance of Injection Mold Core
Shape And Accuracy
The injection mold core define the shape and dimensions of the molded part. They are responsible for creating the desired features, details, and surface finish of the final product. Precise and well-designed injection mold core ensure accurate replication of the desired part geometry.
Mold Functionality
The injection mold core play a critical role in the overall functionality of the mold. They enable the proper flow and distribution of the molten plastic material, ensuring consistent filling of the mold cavity. Properly designed and machined injection mold core allow for efficient and effective mold operation.
Tooling Durability
The injection mold core experience high levels of stress and thermal cycles during the injection molding process. Therefore, they need to be made from durable and wear-resistant materials to withstand the demands of repeated molding cycles. Proper maintenance and quality construction of the injection mold core contribute to the longevity of the mold. View this post to understand other ways to expand mold lifespan.
Cooling And Ejection
The injection mold core also contribute to the cooling and ejection processes. They incorporate cooling channels to dissipate heat from the molten plastic, aiding in solidification and cycle time optimization. Additionally, the cavity contains the ejection system, which helps remove the molded part from the mold after the cooling process.
