Household Dustbin Mold: Professional Injection Molding Solution

I. Product Definition and Features

Household dustbin molds are professional injection molds used to produce various types of dustbins for household and office environments. These molds cover various structural designs, including foot-pedal type, press-type, and sorting-type, meeting modern household demands for functionality, practicality, and space optimization.

II. Core Technical Features

1. Foot-Pedal Linkage Mechanism Mold

Foot-pedal dustbin molds employ a lever linkage system design, connecting the foot pedal and the lid via a precise transmission mechanism. The mold uses a concealed hinge structure, ensuring smooth and quiet opening and closing. The foot-pedal mechanism utilizes a spring structure, with a rebound life ≥100,000 cycles and a load-bearing capacity ≥50 kg. An anti-pinch design ensures safe operation.

2. Sorting Dustbin Mold Design

Four-compartment sorting dustbin molds achieve integrated multi-cavity molding. Through movable insert design, sorting bins of different capacities can be produced in the same mold. Each cavity uses an independent ejection mechanism, ensuring uniform partition wall thickness (1.5-2.5 mm). Color-coded areas are designed for permanent color marking.

3. Sealing Structure Mold

Dustbin molds with built-in sealing designs feature an annular sealing groove inside the lid, using a soft rubber secondary injection molding to form an airtight seal. The sealing ring compression is controlled within 0.8-1.2 mm, ensuring complete closure when the lid is shut.

III. Materials and Process Standards

1. Mold Steel

• Main Cavity: Pre-hardened mold steel NAK80, hardness HRC 38-42, excellent polishability.

• Moving Parts: Stainless mold steel S136, hardness HRC 48-52, strong corrosion resistance.

• Precision Parts: Heat-treated steel SKD61, hardness HRC 52-56, excellent wear resistance.

2. Product Materials

• Bin Body Material: Food-grade PP (Polypropylene), compliant with safety standards.

• Sealing Material: TPE (Thermoplastic Elastomer), Shore hardness 65A-75A.

• Decorative Parts: ABS (Acrylonitrile Butadiene Styrene), high gloss.

3. Special Processes

• Two-Color Injection Molding: Achieves permanent color marking.

• In-Mold Labeling: Completes decorative pattern printing in one step.

• Gas-Assisted Molding: Used for large bin bodies, reduces sink marks.

IV. Structural Design Features

1. Space Optimization Design

Utilizes a conical bin body design, where the top opening diameter is 15-25% larger than the base, facilitating waste disposal. The nestable design reduces the stacked height of empty bins by 40%, saving storage and transportation space. Bin body wall thickness is 1.8-2.5 mm, with reinforcing rib designs ensuring structural strength.

2. Ergonomic Design

Foot pedal height is 80-100 mm, width 150-180 mm, matching adult foot operation habits. Lid opening angle is adjustable between 45°-90°, meeting different usage scenarios. Handle position is designed to align with the natural bend of the human arm, with a load-bearing capacity ≥15 kg.

3. Cleaning-Friendly Design

Inner bin features a smooth curved surface design, with a dead-space-free structure for easy cleaning. Quick-release inner bin design allows removal for cleaning by pressing a release button. Bin bottom incorporates an anti-slip structure, enhancing stability.

V. Quality Control Standards

1. Dimensional Accuracy Control

• Main Dimension Tolerance: ±0.3 mm/100 mm

• Fitting Part Tolerance: ±0.1 mm

• Concentricity Error: ≤0.15 mm

• Flatness Error: ≤0.2 mm/300 mm

2. Functional Testing Standards

• Sealing Test: Water injection test, no leakage after 24 hours.

• Durability Test: Opening/closing test of 50,000 cycles without failure.

• Load-Bearing Test: Drop test from 1.2 m height under full load without breakage.

• Environmental Test: Temperature cycling from -20°C to 60°C, functional operation normal.

3. Safety Certifications

• Material Safety: Passes food contact safety tests.

• Mechanical Safety: Passes relevant safety certifications.

VI. Application Scenarios

1. Kitchen Dustbin Mold

Capacity 10-30L, lid design, good sealing, easy to clean.

2. Living Room Dustbin Mold

Aesthetically pleasing design, various colors, harmonizes with home décor. Quiet opening/closing mechanism.

3. Bathroom Dustbin Mold

Compact and delicate, waterproof design, easy to clean. Often includes an inner bucket for easy cleaning.

4. Office Dustbin Mold

Simple design, high durability, typically foot-pedal type.

5. Outdoor Dustbin Mold

Strong weather resistance, large capacity.

VII. Production Technology Features

1. Mold Change System

Utilizes standardized mold base design, mold change time ≤15 minutes. Equipped with quick connectors, water/electricity/air line connection time ≤3 minutes. Positioning system ensures repeat positioning accuracy ≤0.02 mm.

2. Automated Production

Equipped with an automatic part removal system, removal cycle ≤6 seconds. Inspection system automatically identifies appearance defects, detection accuracy ≥99.5%. Packaging line enables direct packaging after product offloading.

3. Mold Maintenance

Establishes a mold condition monitoring system for real-time monitoring of mold status. Maintenance schedule ensures molds remain in optimal condition.

VIII. Professional Manufacturing Key Points

The successful manufacturing of household dustbin molds relies on four core elements:

1. Practical Design: Design based on usage habits and scenarios.

2. Process Technology: Perfect integration of injection molding technology and structural design.

3. Material Selection: Appropriate material choice and application.

4. Quality Assurance: Quality assurance through precision machining and strict quality control.