China OEM High Precision Plastic Molded PC Injection Moulding Parts with Best Sales

Product Description

OEM High Precision Plastic Molded  PC Injection Moulding Parts With OEM Logo


Injection moulding
 is a manufacturing process for producing parts by injecting molten material into a mould. Injection moulding can be performed with a host of materials mainly including metals, (for which the process is called die-casting), glasses, elastomers, confections, and most commonly thermoplastic and thermosetting polymers.

Material for the part is fed into a heated barrel, mixed (Using a helical shaped screw), and injected (Forced) into a mould cavity, where it cools and hardens to the configuration of the cavity. After a product is designed, usually by an industrial designer or an engineer, moulds are made by a mould-maker (or toolmaker) from metal, usually either steel or aluminium, and precision-machined to form the features of the desired part.

Injection moulding is widely used for manufacturing a variety of parts, from the smallest components to entire body panels of cars. Advances in 3D printing technology, using photopolymers which do not melt during the injection moulding of some lower temperature thermoplastics, can be used for some simple injection moulds.

Applications
Injection moulding is used to create many things such as wire spools, packaging, bottle caps, automotive parts and components, toys, pocket combs, some musical instruments (and parts of them), one-piece chairs and small tables, storage containers, mechanical parts (including gears), and most other plastic products available today. Injection moulding is the most common modern method of manufacturing plastic parts; it is ideal for producing high volumes of the same object.

Power requirements
The power required for this process of injection moulding depends on many things and varies between materials used. Manufacturing Processes Reference Xihu (West Lake) Dis. states that the power requirements depend on “a material’s specific gravity, melting point, thermal conductivity, part size, and molding rate.” Below is a table from page 243 of the same reference as previously mentioned that best illustrates the characteristics relevant to the power required for the most commonly used materials.

Material Specific gravity Melting point (°F) Melting point (°C)
Epoxy 1.12 to 1.24 248 120
Phenolic 1.34 to 1.95 248 120
Nylon 1.01 to 1.15 381 to 509 194 to 265
Polyethylene 0.91 to 0.965 230 to 243 110 to 117
Polystyrene 1.04 to 1.07 338 170

At CZPT Industry, we use the latest machining technology with a wide range of capabilities to meet your demands. Our manufacturing facilities include 3-5 axis milling, lathes, grinding, etc, and state of the art metrology. With these machines, we produce complex parts in the most efficient and accurate way. Our manufacturing capabilities allow us to develop your part from prototype to mass production for the most precise of jobs. 

Plastic Injection Facilities

Equipment Description Specs QTY
Plastic Injection Machine 100 Tons 2
Plastic Injection Machine 150 Tons 2
Plastic Injection Machine 200 Tons 2
Plastic Injection Machine 250 Tons 2
Plastic Injection Machine 350 Tons 1
Plastic Injection Machine 500 Tons 1
Dual-color plastic injection machine 250 Tons 2

CNC Machining Facilities

Equipment Description Workpiece Dimensions Processing Accuracy Quantities Brand
3-axis machining center Max. 1000 x 1200mm +/-0.01mm 6 DMG
4-axis machining center Max. 1000 x 1500mm +/-0.01mm 4 DMG
5-axis machining center Max. 1000 x 1500mm +/-0.01mm 2 DMG
CNC lathe Max. diameter 100mm +/-0.01mm 20 SMTCL
General lathe Max. diameter 500mm +/-0.05mm 2 SMTCL
Turning-Milling machine Max. diameter 100mm +/-0.01mm 6 DMG
Longitudinal lathe Max. diameter 30mm +/-0.01mm 6 TSUGAMI
Automatic lathe Max. diameter 20mm +/-0.02mm 30 TY
CNC Swiss Lathe Max. diameter 20mm +/-0.01mm 6 TSUGAMI

Other assist equipments include:
Milling machine, Drilling machine, Centerless Grinding machine, External Cylindrical Grinding machine, etc.


Vernier Caliper, Micrometer, Height Gage, Hardness Tester, Two-dimensional image measuring instrument, TESA Micro-Hite
300, Mitutoyo surface Roughness Tester, Mitutoyo CMM and Ultrasonic Cleaner.


Q1: Are you a trading company or a manufacturer?

Manufacturer.

Q2: How long is your delivery time?

Normally, the samples delivery is 10-15 days and the lead time for the official order is 30-45 days.

Q3: How long will it take to quote the RFQs?

Normally, it will take 2-3 days.

Q4: Do you provide samples?

Yes, the samples will be free if  the cost is not too high.

Q5: Which countries are your target markets?

America, Canada, Europe, Australia and New Zealand.

Q6: Do you have experience of doing business with overseas customers?

Yes, we have over 10 years exporting experience and 95% of our products were exported to overseas market. We specialized in the high quality OEM parts, we are familiar with the standard of ANSI, DIN, ISO, BS, JIS, etc..

Q7: Do you have reference customers?

Yes, we have been appointed as the supplier of Parker(USA) since 2012. “Supply the top quality precision machined parts” is our management philosophy, ON
TIME and EVERYTIME.

US $0.1-1
/ Piece
|
1,000 Pieces

(Min. Order)

###

Condition: New
Certification: CE, RoHS, GS, ISO9001
Standard: DIN, ASTM, GOST, GB, JIS, ANSI, BS
Customized: Customized
Material: Plastic
Application: Industry

###

Samples:
US$ 10/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Material Specific gravity Melting point (°F) Melting point (°C)
Epoxy 1.12 to 1.24 248 120
Phenolic 1.34 to 1.95 248 120
Nylon 1.01 to 1.15 381 to 509 194 to 265
Polyethylene 0.91 to 0.965 230 to 243 110 to 117
Polystyrene 1.04 to 1.07 338 170

###

Equipment Description Specs QTY
Plastic Injection Machine 100 Tons 2
Plastic Injection Machine 150 Tons 2
Plastic Injection Machine 200 Tons 2
Plastic Injection Machine 250 Tons 2
Plastic Injection Machine 350 Tons 1
Plastic Injection Machine 500 Tons 1
Dual-color plastic injection machine 250 Tons 2

###

Equipment Description Workpiece Dimensions Processing Accuracy Quantities Brand
3-axis machining center Max. 1000 x 1200mm +/-0.01mm 6 DMG
4-axis machining center Max. 1000 x 1500mm +/-0.01mm 4 DMG
5-axis machining center Max. 1000 x 1500mm +/-0.01mm 2 DMG
CNC lathe Max. diameter 100mm +/-0.01mm 20 SMTCL
General lathe Max. diameter 500mm +/-0.05mm 2 SMTCL
Turning-Milling machine Max. diameter 100mm +/-0.01mm 6 DMG
Longitudinal lathe Max. diameter 30mm +/-0.01mm 6 TSUGAMI
Automatic lathe Max. diameter 20mm +/-0.02mm 30 TY
CNC Swiss Lathe Max. diameter 20mm +/-0.01mm 6 TSUGAMI
US $0.1-1
/ Piece
|
1,000 Pieces

(Min. Order)

###

Condition: New
Certification: CE, RoHS, GS, ISO9001
Standard: DIN, ASTM, GOST, GB, JIS, ANSI, BS
Customized: Customized
Material: Plastic
Application: Industry

###

Samples:
US$ 10/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Material Specific gravity Melting point (°F) Melting point (°C)
Epoxy 1.12 to 1.24 248 120
Phenolic 1.34 to 1.95 248 120
Nylon 1.01 to 1.15 381 to 509 194 to 265
Polyethylene 0.91 to 0.965 230 to 243 110 to 117
Polystyrene 1.04 to 1.07 338 170

###

Equipment Description Specs QTY
Plastic Injection Machine 100 Tons 2
Plastic Injection Machine 150 Tons 2
Plastic Injection Machine 200 Tons 2
Plastic Injection Machine 250 Tons 2
Plastic Injection Machine 350 Tons 1
Plastic Injection Machine 500 Tons 1
Dual-color plastic injection machine 250 Tons 2

###

Equipment Description Workpiece Dimensions Processing Accuracy Quantities Brand
3-axis machining center Max. 1000 x 1200mm +/-0.01mm 6 DMG
4-axis machining center Max. 1000 x 1500mm +/-0.01mm 4 DMG
5-axis machining center Max. 1000 x 1500mm +/-0.01mm 2 DMG
CNC lathe Max. diameter 100mm +/-0.01mm 20 SMTCL
General lathe Max. diameter 500mm +/-0.05mm 2 SMTCL
Turning-Milling machine Max. diameter 100mm +/-0.01mm 6 DMG
Longitudinal lathe Max. diameter 30mm +/-0.01mm 6 TSUGAMI
Automatic lathe Max. diameter 20mm +/-0.02mm 30 TY
CNC Swiss Lathe Max. diameter 20mm +/-0.01mm 6 TSUGAMI

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 High Precision Plastic Molded PC Injection Moulding Parts     with Best Sales China OEM High Precision Plastic Molded PC Injection Moulding Parts     with Best Sales
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