Bar Stool Mold: Professional Injection Molding Solution

I. Product Definition and Market Positioning

Bar stool molds are professional injection molds used for producing bar stools found in settings such as bars, restaurants, and home bars. Products cover various structures including single-piece, split-type, and height-adjustable designs, meeting seating posture needs for different scenarios. With the upgrade of leisure and entertainment consumption and the increasing popularity of home bars, the bar stool market is showing a trend towards diversification and personalization, driving higher demands for mold precision and functionality.

II. Core Technical Features of the Mold

1. Gas Lift Height Adjustment Structure

Yige Mold utilizes a gas lift system with an adjustment range of 300-500mm and a load-bearing capacity of ≥150kg. The interface between the gas lift and base employs a precision guiding structure with a fit tolerance of ±0.05mm, ensuring smooth and stable height adjustment. The system uses gas springs with customizable adjustment force and a service life of ≥50,000 cycles.

2. Five-Star Base Support Structure

The base features a five-star foot design with leg tube diameters of Φ30-Φ50mm and wall thicknesses of 2.0-3.0mm. The connection between leg tubes and the central hub incorporates reinforced rib structures, with stress concentration areas using R-angle transitions ≥3.0mm. Leg ends are equipped with non-slip foot pads made of TPE or rubber, with a friction coefficient ≥0.8.

3. Ergonomic Seat Design

Seats employ a curved contour design, with the front edge featuring an anti-slip lip and the rear edge having a slightly raised arc to match the natural curve of the human hips. Seat thickness ranges from 25-40mm, and surfaces can include ventilation hole arrays with an open area ratio of 10%-20%. Seat edges undergo rounded edge treatment (R5-R10) to enhance seating comfort.

4. Backrest Structure Design

Some products include a backrest structure with heights of 300-500mm and tilt angles of 95°-105°. The backrest and seat are connected via either integrated molding or separate assembly. Backrests feature lumbar support curves to support the lower back and improve comfort.

III. Materials and Process Standards

1. Mold Steel

• Cavity Materials: Pre-hardened mold steels such as S136H and NAK80, hardness HRC 38-42

• Moving Components: Hot-work steels like SKD61 and H13, hardness HRC 48-52

• Surface Treatment: Mirror polishing (Ra ≤ 0.05μm) and nitriding treatment (HV ≥ 1000)

2. Product Materials

• PP Material: Compliant with FDA standards, temperature resistant from -20°C to 120°C, excellent impact resistance

• ABS Material: High strength and gloss, suitable for demanding applications

• PP+TPE: Hard-soft combination for seats to enhance comfort

3. Injection Molding Process Parameters

• Barrel Temperature: 190-230°C for PP, 220-260°C for ABS

• Mold Temperature: 40-80°C, adjusted based on part wall thickness

• Injection Pressure: 60-120 MPa

• Holding Pressure: 60-80% of injection pressure

• Holding Time: Calculated at 1-3 seconds per mm of wall thickness

IV. Product Structural Design Highlights

1. Multi-functional Integrated Design

• Swivel Mechanism: A rotating bearing at the seat and gas lift connection allows 360° rotation with a service life ≥100,000 cycles

• Foldable Structure: Some products feature folding hinges, reducing volume by 70% when folded for easy storage

• Armrest Design: Some models include armrest structures with heights of 200-250mm, made of PP or ABS

• Footrest Design: Leg tubes incorporate a footrest crossbar to enhance foot comfort

2. User-Friendly Detail Design

• Seat Anti-slip Texture: Seat surfaces feature anti-slip patterns to improve stability

• Gas Lift Adjustment Handle: Ergonomically designed handle for comfortable grip during height adjustment

• Floor-protecting Foot Pads: Foot pad bottoms include a scratch-resistant layer to protect flooring

• Identification Slot Design: Seats have reserved identification slots for brand labels or laser engraving

3. Lightweight and Strength Balance

Through CAE analysis optimization, seat wall thicknesses are 2.5-3.5mm and leg tube wall thicknesses are 2.0-3.0mm. A cross-reinforced rib layout improves bending strength by 40%. Critical connection points feature reinforced corner structures, passing drop tests (1.0m height) without cracking.

V. Production Efficiency Optimization

1. Quick Mold Change System

• Standardized Interface: Molds use standard mold bases, mold change time ≤15 minutes

• Preheating System: Molds preheated to set temperature, reducing heat-up time by 50%

• Rapid Positioning: Uses locating pins and blocks, positioning accuracy ±0.02mm

2. Automated Production Integration

• Robot Part Removal: Removal cycle ≤8 seconds, avoiding damage from manual handling

• Online Inspection: CCD vision inspection system automatically identifies appearance defects

• Data Acquisition: Real-time production data collection, OEE overall equipment efficiency ≥85%

3. Mold Maintenance

• Regular Maintenance: Comprehensive maintenance performed every 50,000 cycles

• Wear Part Warning: Database established for wear part lifespan, enabling advance replacement warning

• Remote Diagnostics: Supports remote fault diagnosis and technical support

VI. Summary of Professional Manufacturing Points

Successful bar stool mold manufacturing relies on four core elements:

1. Precision Design: Accurate structural design based on ergonomic requirements ensures seating comfort and load-bearing performance

2. Quality Materials: Matching of food-grade raw materials with high-performance mold steels meets safety and durability requirements

3. Advanced Processes: Synergistic action of intelligent temperature control and venting systems ensures dimensional stability and surface quality

4. Strict Quality Control: Full-process quality control from mold machining to product molding ensures products meet international standards

Through systematic technical implementation and professional production management, Yige Mold can stably and efficiently produce products that comply with international standards and meet the diverse demands of the bar stool market.

Core Value of This Article: By focusing on specific technical keywords and industry trends such as "Gas Lift System," "Ergonomic Seat Design," and "Five-Star Base Structure," it provides in-depth information beyond simple product descriptions, effectively attracting professional search traffic and achieving better indexing and ranking on Google.