Injection children scooter moulding

In addition, our company has established cooperative relationships with plastic raw material suppliers, printing manufacturers, etc. to ensure the supply of raw materials and printing quality. Through our rich experience and perfect supply chain, our company can provide customers with high-quality customized injection children scooter moulding products to meet their specific needs. At the same time, we have 10 years of professional foreign trade service experience, understand the foreign trade process, and better serve our customers. For injection children scooter moulding products, we can make corresponding plastic parts, which is mainly done through injection molds.

The injection molding process for children's scooters involves a multi-component, multi-material, and demanding system. It's more than just simple plastic molding; it involves complex considerations for structural strength, safety, aesthetic appeal, and multi-component assembly.

As an excellent mold manufacturer, you should demonstrate to your clients your engineering capabilities and quality control system throughout the entire process.

The following is a detailed breakdown of the process:

The Complete Injection Molding Process for Children's Scooters

Phase 1: Component Analysis and Material Selection

A scooter consists of multiple injection-molded parts, each with its own distinct functions, making material selection crucial.

For the frame/post, core structural components made of PP (polypropylene), ABS, or nylon (PA) + glass fiber (GF) require high rigidity and impact resistance. PP offers low cost and excellent toughness; ABS offers higher strength; and PA + GF is used in high-end models for its excellent strength and creep resistance.

For wheels, PU (polyurethane) and TPE (thermoplastic elastomer) offer wear resistance, high elasticity, and excellent grip. PU is the mainstream choice, providing excellent rolling feel and shock absorption. Pedals: PP, ABS require high rigidity and bend resistance, and the surface is typically treated with an anti-slip texture (etching).

Brake levers: PP, ABS, nylon require excellent strength and fatigue resistance to withstand repeated pedaling.

Decorative parts/housings: ABS, PS (polystyrene): Exterior parts require vibrant colors, a high-gloss surface, and are easily painted or electroplated.

Handlebar covers: TPE, TPR (thermoplastic rubber): Soft rubber provides a soft and comfortable grip and is typically overmolded.

Phase Two: Mold Design and Manufacturing

This is the core step that demonstrates our technical strength.

Mold Types:

Large, complex molds: For example, frame molds typically require large mold bases and require large gantry CNC machining.

Two-shot molds/overmolded molds: Used for manufacturing rigid-soft components, such as handlebars.

Hot runner molds: Standard configuration. Used for most parts, especially multi-cavity molds, to conserve raw materials and ensure efficient injection molding.

Design Key Points:

Structural Analysis: CAE mold flow analysis and structural stress analysis are performed on load-bearing components such as the frame and pedals to predict filling conditions, identify potential defects (such as weld mark locations), and optimize rib design to ensure product strength.

Gating Design: Large components such as the frame require multiple gates for balanced filling and reduced internal stress.

Cooling System: The design must be efficient and uniform, especially in thick-walled areas, to prevent uneven shrinkage and deformation.

Exhaust System: Adequate exhaust slots are provided at the end of the melt to prevent burning.

Stage 3: Injection Molding Process

Process parameters vary significantly for each component depending on its material properties.

Material Pretreatment: All materials must be strictly dried (e.g., ABS at 80-85°C for 3-4 hours) to prevent silver streaks and bubbles.

Injection Molding Machine Selection: Select an injection molding machine with an appropriate tonnage based on the part size. The frame requires a large-tonnage machine (e.g., over 500 tons).

Core Process:

Frame/Stem: Use high mold temperature and medium-to-low injection speeds to reduce molecular orientation and internal stress, preventing later breakage. The holding pressure and time settings are crucial, directly impacting the product's density and strength.

Wheels (PU): PU processing is unique and more sensitive to temperature and humidity, requiring more precise control.

Overmolding: First, the hard component (such as the ABS handlebar) is molded. This component is then placed in a separate mold cavity, where a softer plastic (TPE) is injected, leveraging the chemical bonding properties of the materials to form a single component. The interval between the two injections and the mold temperature must be precisely controlled.

Stage 4: Post-Processing and Assembly

Post-Processing:

De-Gating: Removes residual material from the injection gate.

Silkscreen/Hot Stamping: Prints logos and designs on the frame and pedals.

Quality Control (QC) - This is paramount for children's products!

Dimensional Inspection: Use calipers, CMMs, and other tools to inspect key mounting holes, wheelbase, and other areas to ensure smooth assembly.

Appearance Inspection: Check for shrinkage, flash, air marks, color variations, etc.

Performance Testing (Critical):

Impact Testing: Use a heavy hammer to impact the frame and pedals to test their impact resistance.

Fatigue Testing: Simulates actual use by subjecting the uprights to tens of thousands of reciprocating bends and the brakes to thousands of pedal strokes.

Static Load Testing: Apply pressure far exceeding a child's body weight to the pedals to test for deformation or breakage.

Environmental Testing: Ensures that materials comply with international toy safety standards such as RoHS, REACH, and EN71 to prevent excessive levels of heavy metals and hazardous substances.

Final Assembly:

The injection-molded plastic parts are assembled with purchased metal parts (such as T-bars, bearings, and screws) to create the final product.

Packaging and storage.

We are a injection children scooter moulding manufacturer, providing high-quality injection children scooter moulding manufacturing. As long as you want to customize/develop injection children scooter moulding products, you can find us. We have professional injection mold design and mature manufacturing technology, providing you with one-stop service, from product design-mold making-product production-product packaging-product transportation, we can help you in every link. As long as you come to us, we will provide you with the ultimate service and satisfy you in terms of product quality, production time, information dialogue, etc.

Plastic Injection Mould making

Plastic molding specifications

Mold design:

Transaction process:

Mold testing:

Product packaging

Factory

We are Custom Plastic Mold factory. Our factory is plastic injection mold maker. we has 17 years of experience in professional custom plastic mold and 10 years of foreign trade experience. We are custom Plastic Mold supplier. We can provide custom Plastic Mold service. Our factory can make the Injection molded plastic parts, and the quality of the products will satisfy you.

We have more than 50 high-end machines and hundreds of engineers and designers. We can provide one-stop service, from product design - mold making - product production - product packaging - transportation. We have a complete production chain. We can meet all your requirements.

Services we provide:

Professional custom mold service, Plastic mold design and manufacturing .plastic product production, product design, mold design, blow mold customization, rotational mold customization, die-casting mold customization. 3D printing services, CNC manufacturing services, product packaging, customized packaging, shipping services.

We always adhere to the principles of quality first and time first. While providing customers with the highest quality products, try to maximize the production efficiency and shorten production time. We are proud to tell every customer that our company has not lost any customer since its establishment.If there is a problem with the product, we will seek a solution actively and take responsibility to the end.

FAQ

Q1: Are you trading company or manufacturer ?

A: We are manufacturers.

Q2. When can I get the quotation?

A: We usually quote within 2 days after we get your inquiry.

If you are very urgent, please call us or tell us in your email so that we can quote for you first.

Q3. How long is the lead-time for mold?

A: It all depends on the products' size and complexity. Normally, the lead time is 25 days.

Q4. I have no 3D drawing, how should I start the new project?

A: You can supply us a molding sample, we will help you finish the 3D drawing design.

Q5. Before shipment, how to make sure the products quality?

A: If you don't come to our factory and also don't have the third party for inspection, we will be as your inspection worker.

We will supply you a video for production process detail include process report, products size structure and surface detail, packing detail and so on.

Q6. What is your payment terms?

A: Mold Payment: 40% deposit by T/T in advance, 30% second mold payment before sending out the first trial samples, 30% mold balance after you agree the final samples.

B:Production Payment: 50% deposit in advance, 50% before sending out the final goods.

Q7: How do you make our business long-term and good relationship?

A:1. We keep good quality and competitive price to ensure our customers benefit for best quality products.

2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.