Swing-Top Trash Bin Mold - Yige Molds Professional Injection Molding Solution

I. Product Overview

The swing-top trash bin mold is professional mold equipment used for manufacturing various types of swing-top trash bins. It employs injection molding processes to produce structurally stable, user-friendly bin products. Swing-top trash bins achieve automatic balanced lid closure through lid gravity and swing inertia, effectively preventing odor overflow and insect intrusion. With their neat and aesthetically pleasing appearance, they are widely used in households, offices, public spaces, and other fields.

II. Core Design Points

1. Structural Design Optimization

• Swing Mechanism Design: Uses shaft connection structures to ensure smooth lid swinging. Through the combined action of lid gravity, swing inertia, and damper tension, automatic balanced lid closure is achieved

• Slow-Close System: Installs damper devices to ensure slow lid closure, preventing rapid closure that could cause hand injuries and enhancing usage safety

• Balance Bar Design: Fixed connection of balance bars to the lid edge far from the shaft, increasing lid weight to ensure balanced closure on both sides

2. Material Selection

• Mold Steel: Uses high-quality mold steels (such as P20, 718H, 2738), with cavity accuracy controlled within ±0.03mm, ensuring stable structure and no deformation or cracking after bin molding

• Plastic Material: Compatible with engineering plastics like HDPE, PP. Molten plastic fills evenly, allowing complex structures like bin bodies and lids to be formed in one cycle

• Surface Treatment: Cavity surfaces undergo chrome plating or PVD coating treatment, achieving roughness of Ra≤1.6μm, enhancing product surface finish

3. Functional Configuration

• Garbage Bag Fixation System: Uses locking frames and lid brackets to compress and secure garbage bags, preventing exposure and slippage

• Anti-Pinch Design: Uses dampers to ensure slow lid closure, preventing rapid closure that could trap hands, improving safety

• Classification Markings: Can integrate labeling slots to meet waste sorting requirements

III. Technical Advantages

1. High-Precision Molding

• Uses five-axis machining centers for precision processing, with cavity accuracy controlled within ±0.02mm

• Through high-precision mold production, ensures accurate product dimensions, smooth surfaces, and smooth opening/closing

• Positioning slot dimensional accuracy reaches ±0.1mm, ensuring seamless integration with automated logistics equipment

2. Efficient Cooling System

• Uses zoned temperature control and efficient cooling systems, maintaining cavity temperature differences ≤±2°C

• Cooling system adopts conformal cooling technology, using 3D printing to create cooling channels, improving cooling efficiency by approximately 30%

• Water channel spacing controlled at 20-30mm, ensuring uniform cooling of large structures and preventing warping deformation

3. Material Compatibility

• Mold materials use high-quality mold steels such as P20, 718H, 2738, with hardness controlled between HRC33-62

• High-frequency friction areas like sliders and core pins use tungsten steel inserts with surface nitriding treatment, hardness reaching above HV900

• Surface treatment processes achieve cavity roughness of Ra≤1.6μm, enhancing product surface finish

4. Structural System Optimization

• Multi-point synchronized ejection system, ejection pin density at least 2 per 100cm², ensuring smooth demolding of large products

• Optimized exhaust system design, vent hole dimensions set at 0.03-0.05mm, preventing defects like bubbles and shrinkage porosity

• "Avoidance layout" parting surface design, adjusting parting lines from stress areas to non-stress areas, avoiding flash residue

IV. Mold Manufacturing Process

1. Mold Structure Design

• Uses three-plate composite structures, integrating bin body, lid, and other components into the same mold

• Achieves precise component separation through multiple parting surfaces, reducing subsequent assembly processes

• Ejection system uses pusher pin + slider combinations, with specialized ejection mechanisms designed for bin undercut structures, ensuring no scratching or jamming during product demolding

2. Runner System

• Mold design includes hot runner systems + balanced gates, compatible with engineering plastics like HDPE

• Molten plastic fills evenly, allowing complex structures like bin bodies and lids to be formed in one cycle

• Optimized gating system using hot runner technology reduces material waste by 15%-20% compared to traditional cold runners

3. Processing Technology

• CNC Machining: Five-axis machining centers ensure cavity accuracy of ±0.02mm

• EDM Processing: Precision EDM machining achieves complex curved surface formation

• Precision Polishing: Mirror polishing treatment achieves surface finish of Ra≤0.8μm

V. Molded Product Performance

1. Physical Performance

• Molded swing-top trash bins are impact-resistant and aging-resistant, passing outdoor wear and corrosion resistance tests

• Can be used long-term in working conditions from -30°C to 60°C, adapting to various harsh climate conditions

• Products feature impact resistance, anti-aging, high load-bearing strength, stretching, compression, tearing resistance, high-temperature tolerance, and other characteristics

2. Usage Performance

• Swing-top trash bins are easy to use. After waste disposal, automatic balanced lid closure is achieved through lid gravity and swing inertia

• Effectively prevents odor overflow and insect intrusion, maintaining neat and aesthetically pleasing appearance for widespread use

• Consists of three parts: bin body, swing lid, and lid bracket. Ready for use after installing garbage bags

3. Specification Customization

• Supports multiple specification customizations (such as 50L, 100L, 240L, etc.)

• Can integrate personalized designs like sorting label slots, pedal linkage structures, and movable wheel positions

• Meets usage requirements for different scenarios like households, offices, and public spaces

VI. Yige Molds Service Advantages

1. Technical Expertise

• Yige Molds has 10 years of injection mold manufacturing experience, with professional teams providing customized solutions

• Uses CAD/CAM software for 3D modeling, combined with Moldflow molding analysis technology, simulating parameters like melt flow, filling pressure, and shrinkage deformation in advance

• Engineering teams can provide complete mold design solutions within 14 working days based on specific customer requirements

2. Quality Assurance

• Each mold undergoes strict quality inspection and trial verification, with three-coordinate measurement of grid dimensional tolerances ±0.15mm

• Mold key components use slow wire EDM machining with accuracy reaching ±0.005mm

• Mold lifespan exceeds 800,000 cycles, product dimensional tolerances controlled within ±0.1mm

• Surface finish Ra≤0.08μm ensures stable batch-to-batch product quality

3. After-sales Service

• Yige Molds provides 24-hour technical support teams to solve various production problems

• Common spare parts delivered within 48 hours to minimize customer downtime losses

• Establishes mold asset management platforms allowing customers to view mold usage status, maintenance records, and remaining lifespan predictions online

• When molds reach service life, recycling and renovation services are provided, restoring mold performance to over 80% by replacing key components and repairing worn parts

4. Cost Advantage

• Through mass production and optimized processes, provides customers with the most competitive prices

• Implements a standardized and customized mold development model, establishing a comprehensive mold standard parts library covering mold bases, ejector pins, guide pillars, bushings, etc.

• Optimized gating system using hot runner technology reduces material waste by 15%-20% compared to traditional cold runners

• Improved cooling system design using variable frequency pumps to regulate cooling water flow reduces energy consumption by 30%

VII. Mold Maintenance

1. Daily Maintenance

• Lubricates moving parts like ejector pins, sliders, guide pillars, and bushings to maintain good lubrication

• Cleans mold surfaces and clears water channels to ensure normal cooling system operation

• After each production run, uses clean cloths to wipe mold surfaces, removing dust, oil stains, and plastic residues

2. Regular Maintenance

• Cleans vent grooves, adds vents to air-trapped blackened areas to prevent defects like bubbles and shrinkage porosity

• Repairs damaged and worn areas to ensure mold accuracy meets requirements

• Checks whether mold cooling water channels are clear and whether leaks exist

3. Appearance Maintenance

• Applies paint to mold base exteriors to prevent rust and extend mold lifespan

• When removing molds, applies anti-rust oil to both stationary and moving parts to prevent rusting

• Stores molds tightly closed to prevent dust from entering cavities

VIII. Application Scenarios

1. Household Use

• Household spaces like kitchens, bathrooms, living rooms

• Capacities ranging from 1L to 50L, meeting different household needs

• Aesthetically pleasing appearance, harmonizing with home environments

2. Office Spaces

• Office areas like offices, conference rooms, pantries

• Moderate capacity for daily use and cleaning convenience

• Neat appearance, enhancing office environment quality

3. Public Spaces

• Public venues like shopping malls, airports, stations, hospitals

• Larger capacity meeting public space usage requirements

• High durability, suitable for high-frequency use

4. Sorting Bins

• Can be designed as dual or multi-compartment sorting bins

• Meets waste sorting usage requirements

• Clear external markings for easy user identification

Swing-top trash bin molds achieve high-quality, high-efficiency production goals through precision mold design, advanced equipment configuration, and scientific process control. With 17 years of technical accumulation and rich industry experience, Yige Molds ensures products possess excellent dimensional accuracy, stable mechanical performance, and good appearance quality through professional injection molding processes, providing customers with reliable swing-top trash bin product solutions. Through continuous technological innovation and service optimization, Yige Molds will continue to dedicate itself to providing customers with higher-quality products and services, jointly promoting the development of the trash bin industry.