China China Factory Manufacturers OEM Custom Plastic Injection Molded Parts roto mold vs injection mold

Product Description

Product Description

China factory manufacturers oem Custom Plastic injection molded molding parts 

 

Product Parameters

 

Product Description China factory manufacturers oem Custom Plastic injection molded molding parts 
Plastic Materials: PS, ABS, PP, PVC, PMMA, PBT, PC, POM, PA66, PA6, PBT+GF, PC/ABS, PEEK, HDPE, TPU, PET, PPO,…etc.
Standard: ISO9001:2008
Other materials: Rubber, Slilconce rubber, LSR,Aluminum, Zinc,Copper…Metal…etc.
Quality: RoSH and SGS standard
Feature: Non marking and Non flash
Size: According to your 2D, 3D Drawing
Color,Quantity,Unit price,Tooling cost,Tooling size: To be discussed
Package: Standard exported Wooden box packed, Fumigation process(upon required)
Mold Building Lead Time: T1, 4-5 weeks, Part measurement report (upon required).
Export Country: Europe, Japan, America, Australian, UK, Canada, France, Germany, Italy…etc.:
Experience: 13 years experience in plastic injection mold making and plastic prouducts produce.
To be discussed In-Mold Decoration, Injection Mould, Plastic Mold, Overmould, 2K Mould, Die-Casting Mould, Thermoset Mold, Stack Mold, Interchangeable Mold,Collapsible Core Mold, Die Sets, Compression Mold, Cold Runner System LSR Mold,…etc.
Mould Base: Hasco Standard, European Standard, World Standard
Mould Base Material: LKM, FUTA, HASCO, DME,…etc. Or as per Customer’s Requirment.
Surface Finish: Texture(MT standard), High gloss polishing
Cavity/Core Steel: P20, 2311, H13, 2344, Starvax 420, 236, AdC3, S136, 2312, 2379, 2316, 2083, Nak80, 2767 …etc.
Hot/ Cold Runner HUSKY, INCOE, YDDO, HASCO, DME, MoldMaster, Masterflow, Mastip, ZheJiang made brand…etc.
Mould Life: 5,000 to 1,000,000 Shots. (According to your working environment.)
Design & Program Softwares: CAD, CAM, CAE, Pro-E, UG, Soild works, Moldflow, CATIA….etc.
Equipments: High speed CNC, Standard CNC, EDM, Wire Cutting, WEDM, Grinder, Plastic Injection Molding Machine for trial out mold from 50-3000T available.

Certifications

Who We Are

Rollyu Precision Machining Co., Ltd located in HangZhou, China, is a mechanical manufacturer providing a wide range of custom specialty plastic injection molded parts, cnc machining parts, Sheet Metal Fabrication, Liquid Silicone Rubber Injection Parts, Aluminum Extrusion, Sub-assemblies ,along with advanced over molding capability.
Serving markets including Security systems, Fire systems, Marine ,Health care, Medical Devices, Personal Care, Networking, Internet of Things (IoT), Xihu (West Lake) Dis.n Machine Interaction (HMI) , Consumer Electronics, Telecommunications and Renewable Energy as well as many others with solutions for a variety of challenges they face in these high paced, ever-changing industries. Rollyu Precision provides mechanical components and sub-assemblies to many of the top companies worldwide.

With many years of mechanical parts manufacturing, we continue to expand our capabilities and are well positioned to offer concept-to-commercialization solutions. Rollyu Precision can provide over molding capabilities to streamline timelines and costs. If medical device engineering and design for manufacturing services are needed, our project teams are aligned to provide those services, including tool and fixture fabrication and rapid prototyping.

Examples Of Services And Capabilities Include:

  • Engineering DFM Services
  • CNC Swiss Machining, Milling, and Turning
  • Over molding and Injection Molding
  • Plastic Injection Molded Parts
  • Liquid Silicone Rubber Injection Parts
  • Aluminum Extrusion
  • Sheet Metal Fabrication
  • Sub-assemblies

For a more complete list, please send us inquiry.

What We Do

 

Plastic Injeciton Molded Parts
LSR Parts (Liquid Silicone Rubber Parts)  

More than 36 injection molding machines , mode-locked pressre ranges from 60T to 1000T to mold plastic parts, silicone rubber parts, over 10 years OEM experiences plastic molding processing.
The main industries we served are security, medical device, IoT, human machine interaction, consumer electronics, renewable energy as well as many others markets.

CNC Machining Service
Milling Parts
Turning Parts

Rollyu Precision offers CNC milling and turning service, 3 axis to 5 axis machining capabilities, both standard and live-tooling CNC turning and milling.

Till today, we own 26 CNC milling machines, among those are 18 sets of 3 axis , 6 sets of 4 axis and 2 sets of 5 axis, largest 1 2000mmx1300mm gantry type, max turning diameter applicable range from 150mm to 2000mm.

The main industries we served are security,instrument, phontonics, medical device, IoT, human machine interaction, consumer electronics, renewable energy as well as many others markets.

Sheet Metal Fabrication

Single & progressive stamping with punching dies,CNC laser cutting and bending for larger sizes, we are skilled and experienced for electronics enclosures, covers, wall & chasis, shim, gasket, bracket and spring clips.

Why Choose Us

1.All the Plastic molded parts,  machining parts, sheet metal  fabrication are under 1 roof .
2.Strict Incoming material Control. All raw material including plastic resins, engineering plastic block/tube/bar, steel, stainless steel, aluminum etc. are from certified suppliers.
3.Protect your ideas, drawings as we have confidential system.
4.All parts with reasonable price.Quotatoin within 24 hours.
5.Our professional team will help you to save cost and lead time,efficient production to provide satisfactory service.
6.Satisfied quality for our sheet metal fabrication, plastic molded parts, cnc machining parts and silicone rubber parts. Rollyu Precision offers small, mid & high volume mechanical parts.
7.The important of advanced produciton and testing equipment with high stability. Rollyu Precision offers high precision tolerances ranging from +/-0.001″-0.005″, depending on your specifications.
8.Rollyu Precision is a factory with ISO9001, ISO13485 Certificates. We perform Incoming material inspection, In-processing Quality control and Final cosmetic & dimension Inspeciton. For order less than 20 pieces all the dimensions and cosmetic will be 100% inspected. For order over 20 pieces 100% cosmetic inspection and an AQL MIL-STD-105E (Cr 0,Ma 0.4, Mi 1.0) inspection.

Who We Work With

No matter which industry you from, we are happy to work with you.

Some of our current customers’ industries:

1. Medical device
2. Instrumentation
3. Photonics
4. Security systems
5. Xihu (West Lake) Dis.n Machine Interface 
6. Consumer electronics
7. Automation
8. Energy
9. Aerospace
10. Automobile
11. Marine
12. Networking (IoT)
13. Lighting
14. Biotechnology
15. Nanotechnology 

 

Packaging & Shipping

After Sales Service

 

FAQ

FAQ
Q1: Are you a trading company or a factory ?
A1: We are a manufacturer specialized in precision parts OEM, Machining parts,  Plastic injection molding, Plastic parts, Silicone and rubber parts, Heat sink, sheet metal fabrication as well as Sub-assembly.

Q2: Do you accept to manufacture the customized products based on our design?
A2: Yes, we are a professional factory with an experienced engineering team, would like to provide the OEM service.

Q3: How can I get the quotation?
A3: We will offer you the quotation within 24 working hours after receiving your detailed information. In order to quote you faster and more accurate, please provide us the following information together with your inquiry:
1) CAD or 3D Drawings
2) Tolerance.
3) Material requirement
4) Surface treatment
5) Quantity (per order/per month/annual)
6) Any special demands or requirements, such as packing, labels, delivery,etc.

Q4: Will my drawings be safe after sending to you?
A4: Sure, we will keep them well and not release to others without your permission.

Q5: How long is the lead-time for a mold and plastic parts, machining parts, sheet metal fabrication?
A5: It all depends on the mold (parts) size and complexity.
Normally, the lead time is 18-20 days for molds, 15-20 days for plastic parts. If the molds are very simple and not big, we can work out within 15 days.
The lead time for machining parts is around 2-4 weeks.
For sheet metal fabrication the lead time is around 3-5 weeks.

Q6: I have no 3D drawing, how should I start the new project?
A6: You can supply us the sample or provide us the product sizes and let us know the detailed requirements, our engineers will help you to work out the 3D drawing.

Q7: If you make poor quality goods, will you refund our fund?
A7: As a matter of fact, we won’t take a chance to do poor quality products. Meanwhile, we manufacture good-quality products until your satisfaction.

Q8: Is it possible to know how are my products going on without visiting your factory?
A8: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show the machining progress.
 

Plastic Type: Thermosetting Plastic
Plastic Form: Dispersoid
Molding Method: Injection Molding
Certificate: ISO9001:2015
Size: Customized Size
Drawing Format: 2D/(Pdf/CAD)3D(Iges/Step)

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

|
Request Sample

###

Customization:

###

Product Description China factory manufacturers oem Custom Plastic injection molded molding parts 
Plastic Materials: PS, ABS, PP, PVC, PMMA, PBT, PC, POM, PA66, PA6, PBT+GF, PC/ABS, PEEK, HDPE, TPU, PET, PPO,…etc.
Standard: ISO9001:2008
Other materials: Rubber, Slilconce rubber, LSR,Aluminum, Zinc,Copper…Metal…etc.
Quality: RoSH and SGS standard
Feature: Non marking and Non flash
Size: According to your 2D, 3D Drawing
Color,Quantity,Unit price,Tooling cost,Tooling size: To be discussed
Package: Standard exported Wooden box packed, Fumigation process(upon required)
Mold Building Lead Time: T1, 4-5 weeks, Part measurement report (upon required).
Export Country: Europe, Japan, America, Australian, UK, Canada, France, Germany, Italy…etc.:
Experience: 13 years experience in plastic injection mold making and plastic prouducts produce.
To be discussed In-Mold Decoration, Injection Mould, Plastic Mold, Overmould, 2K Mould, Die-Casting Mould, Thermoset Mold, Stack Mold, Interchangeable Mold,Collapsible Core Mold, Die Sets, Compression Mold, Cold Runner System LSR Mold,…etc.
Mould Base: Hasco Standard, European Standard, World Standard
Mould Base Material: LKM, FUTA, HASCO, DME,…etc. Or as per Customer’s Requirment.
Surface Finish: Texture(MT standard), High gloss polishing
Cavity/Core Steel: P20, 2311, H13, 2344, Starvax 420, 236, AdC3, S136, 2312, 2379, 2316, 2083, Nak80, 2767 …etc.
Hot/ Cold Runner HUSKY, INCOE, YDDO, HASCO, DME, MoldMaster, Masterflow, Mastip, Taiwan made brand…etc.
Mould Life: 5,000 to 1,000,000 Shots. (According to your working environment.)
Design & Program Softwares: CAD, CAM, CAE, Pro-E, UG, Soild works, Moldflow, CATIA….etc.
Equipments: High speed CNC, Standard CNC, EDM, Wire Cutting, WEDM, Grinder, Plastic Injection Molding Machine for trial out mold from 50-3000T available.

###

Plastic Type: Thermosetting Plastic
Plastic Form: Dispersoid
Molding Method: Injection Molding
Certificate: ISO9001:2015
Size: Customized Size
Drawing Format: 2D/(Pdf/CAD)3D(Iges/Step)

###

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

|
Request Sample

###

Customization:

###

Product Description China factory manufacturers oem Custom Plastic injection molded molding parts 
Plastic Materials: PS, ABS, PP, PVC, PMMA, PBT, PC, POM, PA66, PA6, PBT+GF, PC/ABS, PEEK, HDPE, TPU, PET, PPO,…etc.
Standard: ISO9001:2008
Other materials: Rubber, Slilconce rubber, LSR,Aluminum, Zinc,Copper…Metal…etc.
Quality: RoSH and SGS standard
Feature: Non marking and Non flash
Size: According to your 2D, 3D Drawing
Color,Quantity,Unit price,Tooling cost,Tooling size: To be discussed
Package: Standard exported Wooden box packed, Fumigation process(upon required)
Mold Building Lead Time: T1, 4-5 weeks, Part measurement report (upon required).
Export Country: Europe, Japan, America, Australian, UK, Canada, France, Germany, Italy…etc.:
Experience: 13 years experience in plastic injection mold making and plastic prouducts produce.
To be discussed In-Mold Decoration, Injection Mould, Plastic Mold, Overmould, 2K Mould, Die-Casting Mould, Thermoset Mold, Stack Mold, Interchangeable Mold,Collapsible Core Mold, Die Sets, Compression Mold, Cold Runner System LSR Mold,…etc.
Mould Base: Hasco Standard, European Standard, World Standard
Mould Base Material: LKM, FUTA, HASCO, DME,…etc. Or as per Customer’s Requirment.
Surface Finish: Texture(MT standard), High gloss polishing
Cavity/Core Steel: P20, 2311, H13, 2344, Starvax 420, 236, AdC3, S136, 2312, 2379, 2316, 2083, Nak80, 2767 …etc.
Hot/ Cold Runner HUSKY, INCOE, YDDO, HASCO, DME, MoldMaster, Masterflow, Mastip, Taiwan made brand…etc.
Mould Life: 5,000 to 1,000,000 Shots. (According to your working environment.)
Design & Program Softwares: CAD, CAM, CAE, Pro-E, UG, Soild works, Moldflow, CATIA….etc.
Equipments: High speed CNC, Standard CNC, EDM, Wire Cutting, WEDM, Grinder, Plastic Injection Molding Machine for trial out mold from 50-3000T available.

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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 China Factory Manufacturers OEM Custom Plastic Injection Molded Parts     roto mold vs injection moldChina China Factory Manufacturers OEM Custom Plastic Injection Molded Parts     roto mold vs injection mold
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