18 Head Combination Weigher

Keypack Intelligent 3-Layer 18-Head Combination Weigher — a Multihead Combination Weigher designed for quantitative weighing of granular, flake, round, irregular-shaped, and puffed free-flowing materials across food, confectionery, frozen food, and small hardware packaging lines. Available in two configurations (KB-A18-1: 20–300 g; KB-A18-2.5: 20–1000 g), both models operate at X(0.5) accuracy class with a maximum speed of 180P/M, integrating a three-layer memory hopper configuration and CAN bus control to support stable combination weighing performance.

Product Overview

The 3-Layer 18-Head Combination Weigher represents advanced combination weighing technology engineered for high-precision dosing of diverse free-flowing materials including granular, flake, round, irregular-shaped, and puffed products. This intelligent weighing system features a unique three-layer configuration with memory hoppers that temporarily store weighed materials, significantly increasing combination probability and enhancing overall weighing accuracy beyond standard two-layer systems.

The Keypack Intelligent (Kunbupack) multihead weigher integrates high-precision custom sensors with intelligent multi-sampling stabilization modes to ensure consistent, accurate weighing performance across diverse product types and densities. Built with a fully enclosed square-frame chassis and integrated center seat welded construction, this combination scale delivers superior structural rigidity and reduced hopper stabilization time for faster weighing cycles and higher production throughput.

The separated main vibration pan design accommodates two or three different mixed materials simultaneously, while the diamond-shaped hopper design concentrates materials for faster discharge. Advanced asynchronous high-speed discharge functionality effectively prevents material blockage, ensuring continuous operation in demanding production environments. The 10.1-inch touchscreen interface with Modbus industrial communication protocol enables seamless integration with packaging machines for unified control.

Product Specifications

Key Features and Machine Characteristics

Intelligent Weighing Technology

High-Precision Custom Sensors: Equipped with specially manufactured high-precision, high-standard load cells that deliver consistent X(0.5) accuracy class performance across varying product densities and environmental conditions, ensuring reliable weight measurements for quality control and regulatory compliance in food and industrial applications.

Multi-Sampling Stabilization Mode: Intelligent multi-pass sampling algorithm analyzes product flow characteristics and automatically adjusts weighing parameters in real-time, resulting in superior accuracy and reduced giveaway. This advanced stabilization technology directly improves profit margins on high-volume production runs by minimizing product waste.

Three-Layer Memory Hopper Innovation: The unique three-layer configuration with dedicated memory hoppers temporarily stores pre-weighed batches before final discharge, dramatically increasing the number of possible weight combinations. This advanced design enhances weighing precision and consistency compared to standard two-layer systems, particularly beneficial for difficult-to-weigh products with irregular shapes or varying densities.

Advanced Control and Integration

CAN Bus Modular Architecture: New high-integration modular design utilizing CAN (Controller Area Network) bus technology provides faster data transmission between weighing heads, improved system reliability, and simplified troubleshooting. The distributed control architecture reduces wiring complexity and enables real-time communication for synchronized operation.

Modbus Industrial Protocol Integration: Implements Modbus industrial standard communication protocol to achieve unified interface control between the combination weigher and packaging machine. This seamless integration eliminates the need for separate control panels, streamlining operator training, reducing production floor footprint, and enabling centralized monitoring of the complete packaging line.

10.1-Inch Touchscreen Interface: Intuitive touchscreen HMI provides easy access to all weighing parameters, real-time production data, and diagnostic information. Operators can quickly adjust settings, monitor performance metrics, and access historical data for quality assurance and process optimization.

Intelligent Fault Alarm System: Proactive diagnostic monitoring with intelligent fault detection and alarm prompts enables predictive maintenance, minimizes unplanned downtime, and simplifies troubleshooting for maintenance personnel. Clear error messages and diagnostic codes reduce mean time to repair.

Mechanical Excellence

Multi-Material Capability: Features separated main vibration pan design that accommodates two or three different material types simultaneously, enabling mixed-product weighing for combination packs, trail mixes, or multi-component recipes without changeover time. This flexibility maximizes production efficiency for manufacturers offering diverse product portfolios.

Diamond-Shaped Hopper Design: Specially engineered diamond-shaped hoppers concentrate materials toward the center discharge point, accelerating material flow and reducing discharge time. This geometric optimization contributes to faster weighing cycles and higher overall throughput of up to 180 weighments per minute.

High-Speed Asynchronous Discharge: Advanced asynchronous discharge functionality prevents material accumulation and blockage in discharge chutes, maintaining consistent throughput even with sticky, fragile, or irregularly shaped products that typically challenge conventional systems. This feature is particularly valuable for products like dried fruits, candies, and delicate snacks.

Reinforced Structural Design: Fully enclosed square-frame chassis with integrated center seat one-piece welding construction significantly enhances machine rigidity and stability. This robust design reduces hopper stabilization time, enabling faster weighing cycles, minimizing vibration transmission, and improving long-term dimensional accuracy.

Step Motor Drive System: Precision step motor drive provides accurate, repeatable hopper door operation with minimal maintenance requirements. The step motor system ensures consistent discharge timing and contributes to overall weighing accuracy.

Application Areas

Food Industry - Snacks and Confectionery

• Nuts and Seeds: Sunflower seeds, peanuts, cashews, almonds, pistachios, and mixed nut blends for retail packaging and bulk distribution with precise weight control
• Dried Fruits: Raisins, dried cranberries, apricots, and fruit mixes for trail mix production and standalone packaging requiring gentle handling
• Candy and Confectionery: Hard candies, gummies, chocolate pieces, and sugar-coated confections requiring gentle handling and precise portion control for consumer packaging
• Savory Snacks: Potato chips, tortilla chips, pretzels, popcorn, and extruded snacks with fragile structures requiring low-impact discharge to minimize breakage
• Puffed and Extruded Products: Cheese puffs, corn puffs, rice crisps, and expanded snacks with low bulk density and high volume-to-weight ratios

Food Industry - Frozen and Prepared Foods

• Frozen Meatballs: Multi-piece weighing of frozen meatballs, nuggets, and formed protein products requiring count accuracy and weight consistency for portion control
• Frozen Dumplings: Multi-piece weighing of frozen dumplings, wontons, and potstickers for retail and foodservice packaging with count accuracy
• Seafood Products: Breaded shrimp, fish sticks, and seafood-based products with irregular shapes requiring adaptive weighing algorithms

Hardware and Non-Food Applications

• Small Hardware Components: Screws, bolts, nuts, washers, and fasteners for industrial packaging and distribution with precise count-by-weight verification
• Plastic Parts: Injection-molded components, caps, closures, and small plastic parts for various industries requiring accurate batching

Material Characteristics Compatibility

This multihead weigher is suitable for free-flowing materials in the following forms:

• Granular materials: Free-flowing granular products with consistent particle size distribution
• Flake forms: Thin, flat products including chips and flaked materials requiring gentle handling
• Round and spherical shapes: Balls, spheres, and round products with consistent rolling characteristics
• Irregular shapes: Non-uniform products including natural nuts, dried fruits, and formed foods with varying geometries
• Puffed and low-density products: Expanded and puffed materials with low bulk density requiring specialized vibration control
• Hardware components: Small metal parts and fasteners with consistent density and flow properties

Customization and Configuration Options

• Contact Parts Material: Food-grade stainless steel construction available for all product-contact surfaces to meet hygiene standards
• Dimple Plate: Optional textured vibration pan surfaces to improve material flow for sticky or cohesive products
• Timing Hopper: Optional timing hopper for synchronized discharge with downstream packaging equipment
• Data Printer: Optional integrated printer for production records, quality documentation, and traceability requirements
• Reject Device: Optional automatic rejection system for out-of-specification packages to ensure quality control
• Hopper Volume Customization: Customizable hopper sizes based on product bulk density and target weight range requirements
• Discharge Chute Options: Various discharge configurations including standard, anti-stick coating, or specialized geometries for difficult products
• Integration Interfaces: Compatible with vertical form-fill-seal machines, pre-made pouch machines, and other packaging equipment via Modbus protocol
• Voltage Configuration: Available in multiple voltage standards for global deployment and regional electrical requirements

Delivery and Support

• Professional Installation: On-site installation services available including mechanical integration, electrical connection, and system setup
• System Commissioning: Complete system commissioning and performance verification to ensure optimal accuracy and throughput for your specific products
• Operator Training: Comprehensive training programs covering operation, routine maintenance, parameter optimization, and troubleshooting procedures
• Technical Documentation: Complete operation manuals, maintenance schedules, electrical schematics, and spare parts catalogs provided in English and Chinese
• Technical Support: Professional technical support available via phone, email, and remote diagnostic connectivity for rapid troubleshooting and parameter adjustment
• Spare Parts Availability: Critical wear parts and common replacement components maintained in stock for rapid fulfillment and minimal downtime
• Warranty Coverage: Comprehensive warranty coverage provided for parts and service with extended warranty programs available
• Performance Optimization: Post-installation follow-up and parameter fine-tuning services to maximize accuracy and throughput for your specific product mix

Related Solutions

Looking for a complete packaging solution? Explore our Fully Automatic Granule Line to see how this weigher integrates into a full production line. For custom configurations or technical inquiries, please Contact Us — our team is ready to help you find the right solution.