China OEM Cnc Machining Ejector Pin For Plastic Moulds Injection Mold Parts Ejector Sleeve roto mold vs injection mold

Model Number: EP22571-9
Shaping Mode: Plastic Injection Mould
Product Material: Metal, SKD61
Product: Vehicle Mould
Material: SKH51
Color: Customized Colors
Surface treatment: Nitride
Equipment: Grinder
Product Name: Injection Mold
Drawing Format: 2D/(PDF/CAD)3D(IGES/STEP)
Feature: High-quality
Tolerance: 0.02mm
Port: HangZhou

GL Molds Company is specialized in precision CZPT component manufacturer. We have a group of up-to-date machines and experienced engineers to meet customers’ production requirements. Tolerance of some products could reach 0.003mm. Main products include – punch pin, CZPT pin, CZPT rod, ejector sleeve, ejector pin, locating key, ingate sleeve, stop pin and other CZPT parts.

MaterialSKD61 SKH51 65MN SUJ2 Aluminium6061/6063/7075/5052 etc, Stainless steel303/304/400/316, SteelQ235,20#,45#etc
ProcessCNC turning,CNC lathe machining, CNC boring;CNC milling, CNC grinding;
SizeStandard and customers design
Heat treatmentAvailable
Surface WorkNitriding Polishing Hardness anodizing black/clear, steel oxidizing dark-blue, electro-polishing, electroless nickel plating, silver plating, golden plating etc
ToleranceStandard or + – 0.002mm
Maine equipmentMachining center, CNC, Lathe, Turning machine, Milling machine, Drilling machine, Internal and external grinding machine, Cylindrical grinding machine, Wire cutting machine etc.
Testing facility Coordinate measuring machine, projector, roughness tester, hardness tester, concentricity tester. Height tester
Straight Ejector Pin.The straight ejector pin refers to the part that ejects the product from the mold. When the push rod is ejected, it may break or bend due to compression stress. To prevent this kind of phenomenon, the push rod needs to have sufficient compressive strength and bending strength. Flat Ejector Pin.The rod diameter of the flat ejector pin is cylindrical, and only the front end is ground into a square section.The connection between the square part and the round rod part is processed into a transitional arc R, which can relax the mechanical effect of concentrated stress when subjected to compressive load or bending load, and is not easy to break during use. Step Ejector Pin.The step ejector pin is a part used when ejecting the molded product from the mold. The step connection part is processed with agood transition arc R, which can relieve the stress concentration when it is subjected to a compressive load or a bending load,and it is not easy to break during use. Double-Step Ejector Pin.Features : The double-step ejector pin can achieve the production of a push rod with a very small front end diameter and a long total length through 2 steps. Company Profile HangZhou Guolin CZPT Accessories Co., Ltd. was founded in 2005. As a global manufacturer of high-quality mold components in China, we are specialized in fabricating precision metal stamping parts & Plastic CZPT Parts. Our business covers Automobile, electronics, electric, stationaries & medical industries. We are also CZPT to redraw based on customers’ samples. We have a strong design team for 2D & 3D. We also have a group of experienced engineers and technicians to guarantee High quality standard,competitive price, on-time delivery and professional after-sales service. And this is the foundation for us to develop the mutual trust and confidence with our domestic and international clients. Manufacturing Technique Visiting Client Here is a group photo of some customers from different countries who come to our factory to exchange experience and check the production process. Detection —Production measuring tool Packaging And Delivery FAQ FAQ1. What do you need to provide a quote? Please kindly send us the drawing of your product. Details below should be included, A.Materials B. Surface Finish C. Tolerance D. Quantity (Please be noted that these are essential for our quoting. We couldn’t quote the specific price without any of them.)2. How does the payment process work? Payment terms are flexible for us in accordance with specific conditions. Generally we advise 30%TT deposit, balance be paid before shipment.3. How do I know about the production? We will double confirm your requirements and send you the sample before the mass production. During the mass production, we will keep you informed of any progress. Besides, we will do 100% quality inspection before shipment.4. How do I know about the delivery? We will inform you of the tracking number once we get it from shipping agent. Also we will keep updating the latest shipping information for you.5. What will you do for after sales? When our metal parts apply to your products, we will follow up and await your feedback. Any question related to our metal parts, our experienced engineers are ready to help. Mold ejector pin is also called push rod and cradle pin. It is used more in plastic molds and is a commonly used plastic mold accessory. Application: The first use can be used in plastic molds to separate the product from the mold. This is its typical use. The second use is to unclog longer and thinner holes, such as the tungsten steel ejector pin in the cemented carbide ejector pin. The third use is to play a stable role in the mold, here it is called a pin.

Importance of Wall Thickness in Injection Molded Parts

When designing injection molded parts, it is important to keep the wall thickness uniform. Uneven wall thickness can lead to warping and sinking. To minimize these problems, injection molded parts should have a wall thickness of 40 to 60 percent of the adjacent wall. The thickness of the wall should also fit within the range recommended for the resin that is being used. If the wall thickness is too thick, it should be cored out. Unnecessary wall thickness alters the dimensions of the part, reduces its strength, and may require post-process machining.

Designing out sharp corners on injection molded parts

Injection molded parttDesigning out sharp corners on injection molded components can be a challenging process. There are several factors to consider that impact how much corner radius you need to design out. A general rule is to use a radius that is about 0.5 times the thickness of the adjacent wall. This will prevent sharp corners from occurring on a part that is manufactured from injection molding.
Sharp corners can obstruct the flow of plastic melt into the mold and create flaws on parts. They can also cause stress concentration, which can compromise the strength of the part. To avoid this, sharp corners should be designed out. Adding radii to the corners is also an effective way to avoid sharp angles.
Another common problem is the presence of overhangs. Injection molding parts with overhangs tend to have side-action cores, which enter from the top or bottom. As a result, the cost of making these parts goes up quickly. Moreover, the process of solidification and cooling takes up more than half of the injection molding cycle. This makes it more cost-effective to design parts with minimal overhangs.
Undercuts on injection molded parts should be designed with a greater radius, preferably one or two times the part’s wall thickness. The inside radius of corners should be at least 0.5 times the wall thickness and the outside radius should be 1.5 times the wall thickness. This will help maintain a consistent wall thickness throughout the part. Avoiding undercuts is also important for easy ejection from the mold. If undercuts are present, they can cause a part to stick inside the mold after it has cooled.
Keeping wall thickness uniform is another important issue when designing plastic parts. Inconsistent wall thickness will increase the chance of warping and other defects.

Adding inserts to injection molded parts

Adding inserts to injection molded parts can be a cost-effective way to enhance the functionality of your products. Inserts are usually manufactured from a wide range of materials, including stainless steel, brass, aluminum, bronze, copper, Monel, nickel/nickel alloy, and more. Selecting the right material for your parts depends on the application. Choosing the correct material can help prevent defects and keep production cycles short. The insert material should be durable and resist deformation during the injection molding process. It must also be thin enough to provide the desired grip and have a proper mold depth.
The benefits of adding inserts to injection molded parts include the ability to design parts with unique shapes. These parts can be aesthetically pleasing, while still remaining durable and resistant to wear and tear. In addition, insert molding allows products to have a good external finish. In addition to being cost-effective, insert molding is considered a more efficient manufacturing method than other conventional methods.
Adding inserts to injection molded parts is an excellent way to enhance the strength and performance of your products. There are many different types of inserts, including threaded nuts, bushings, pins, and blades. Some types are even available with knurled outer surfaces that help them adhere to plastic.
In addition to being cost-effective, insert molding is environmentally friendly and compatible with many types of materials. Typical inserts are made of metal or plastic. Depending on the application, stiffening inserts may also be made from wood.

Importance of uniform wall thickness

Injection molded partThe uniformity of wall thickness is an essential factor in the plastic injection molding process. It not only provides the best processing results, but also ensures that the molded part is consistently balanced. This uniformity is especially important for plastics, since they are poor heat conductors. Moreover, if the wall thickness of an injection molded part varies, air will trap and the part will exhibit a poorly balanced filling pattern.
Uniform wall thickness also helps reduce shrinkage. Different materials have different shrinkage rates. For instance, thick parts take longer time to cool than thin ones. As the part’s thickness increases, cooling time doubles. This relationship is due to the one-dimensional heat conduction equation, which shows that heat flows from the center of the part toward the cooling channel. However, this relationship does not hold for all types of plastics.
The general rule for maintaining uniform wall thickness in injection molded parts is that walls should be no thicker than 3mm. In some cases, thicker walls can be used, but they will significantly increase production time and detract from the part’s aesthetic appeal and functionality. Furthermore, the thickness of adjacent walls should be no thicker than 40-60% of each other.
The uniformity of wall thickness is critical to the overall quality and efficiency of the injection molding process. An uneven wall thickness can cause twisting, warping, cracking, and even collapse. A uniform wall thickness also reduces residual stress and shrinkage. Injection molded parts are more stable when the wall thickness is uniform.
An injection molded part with thick walls can be problematic, especially when the molded parts are shaped like a cube. A non-uniform wall thickness can result in problems and costly retooling. Fortunately, there are solutions to this problem. The first step is to understand the problem areas and take action.

Using 3D printing to fabricate molds

splineshaftThe use of 3D printed molds allows manufacturers to manufacture a wide range of injection molded parts. However, 3D-printed molds are not as strong as those made from metallic materials. This means that they do not withstand high temperatures, which can degrade them. As such, they are not suitable for projects that require smooth finishing. In order to reduce this risk, 3D-printed molds can be treated with ceramic coatings.
Using 3D printing to fabricate injection molds can help reduce costs and lead times, allowing manufacturers to bring their products to market faster. This process also has the advantage of being highly efficient, as molds made using 3D printing can be designed to last for many years.
The first step in fabricating an injection mold is to design a design. This design can be complex or simple, depending on the part. The design of the mold can be intricate. A simple example of a mold would be a red cup, with an interior and exterior. The interior portion would have a large cone of material protruding from the other side.
Injection molding is an effective way to produce thousands of parts. However, many engineering companies do not have access to expensive 3D printers. To solve this problem, companies should consider using outside suppliers. In addition to speeding up the manufacturing process, 3D printing can reduce the cost of sample parts.
Plastic injection molding still remains the most popular method for high volume production. However, this process requires a large up-front capital investment and takes a while to adapt. Its advantages include the ability to use multiple molds at once, minimal material wastage, and precision dosing. With an increasing number of materials available, 3D printing can be a smart option for companies looking to manufacture a variety of plastic parts.
China OEM Cnc Machining Ejector Pin For Plastic Moulds Injection Mold Parts Ejector Sleeve     roto mold vs injection moldChina OEM Cnc Machining Ejector Pin For Plastic Moulds Injection Mold Parts Ejector Sleeve     roto mold vs injection mold
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