Automatic Nail Screw Nut Weigher Pack Machine

The Automatic Nail Screw Nut Weigher Pack Machine operates through a scientific and efficient workflow that covers four core stages: automatic feeding, precise weighing & counting, bag forming & sealing, and finished product conveying. The entire process is fully automated, requiring only 1-2 operators for monitoring and parameter adjustment, which significantly reduces labor dependence and human error.In the feeding stage, the machine is equipped with a multi-channel vibration feeding system (single or multiple vibration pans optional) that can stably and evenly convey nails, screws or nuts from the storage hopper to the weighing system. The vibration frequency is adjustable, which can be optimized according to the size and weight of the fasteners to avoid jamming or damage to the products. For mixed packaging needs, multiple vibration pans can work synchronously to feed different types of fasteners into the weighing system in a preset ratio.

Technical Parameter Table

Parameter Name	Standard Specification	Optional Specification
Packaging Speed	5-60 bags/min	5-20 bags/min (large-bag model)
Weighing Range	50g-10kg	5-25kg (cartoning model)
Weighing Accuracy	±0.1%	±0.05% (high-precision model)
Counting Accuracy	±0.05% (for uniform-weight fasteners)	±0.03% (high-precision counting model)
Bag Length	80-350mm	80-1000mm (customizable)
Bag Width	60-250mm	60-580mm (customizable)
Film Thickness	0.04-0.12mm	0.03-0.15mm
Max Film Roll Diameter	320mm	400mm
Feeding System	Single vibration pan (1 channel)	2-4 vibration pans (multi-channel, for mixed packaging)
Control System	PLC control + 7-inch touch screen	Imported PLC (Mitsubishi/Siemens) + 10-inch touch screen
Power Supply	AC 220V/110V, 50/60Hz, 2-3kW	AC 380V, 50/60Hz, 4-5kW (large-capacity model)
Machine Dimension (L×W×H)	1217×1015×1343mm	1488×1080×1490mm ~ 1780×1350×2050mm (different models)
Machine Weight	About 650kg	680kg ~ 750kg (different models)
Protection Level	IP65	IP67 (waterproof & dustproof)
Communication Interface	RS485/Modbus-RTU	Bluetooth/USB/LoRa wireless transmission
Optional Devices	Date printing, hole punching device	Air-filling device, tear notch device, metal detector, Z-type conveyor

Core Advantages

High Precision & Stability

Adopts high-sensitivity load cell and intelligent combination weighing algorithm, with weighing accuracy up to ±0.1% and counting accuracy up to ±0.05%, ensuring each package meets the preset weight or quantity standard. The adaptive filtering technology resists vibration and electromagnetic interference, maintaining stable performance in complex industrial environments.

Full Automation & High Efficiency

Integrates feeding, weighing, counting, bag forming, sealing and conveying into one seamless process, reducing labor demand by 80% compared to manual packaging. The packaging speed can reach 5-60 bags per minute, which is 4-7 times higher than manual operation, significantly improving production efficiency and reducing labor costs.

Versatile & Flexible

Suitable for various fasteners including nails, screws, nuts, bolts, washers and rivets of different sizes and materials. Supports both single-type and mixed-type packaging, and can be customized to different bag sizes and packaging forms (back-seal, pillow bag, three-side seal) to meet diverse packaging needs.

Automatic Nail Screw Nut Weigher Pack Machine

User-Friendly & Easy to Maintain

The 7-inch touch screen interface is intuitive and supports multiple languages, enabling operators to set parameters, monitor operations and troubleshoot easily without professional training. The stainless steel contact parts are easy to clean, and the fault self-diagnosis function reduces maintenance time and costs.

why choose us

Cost Reduction & Profit Improvement: By replacing manual labor with full automation, it reduces labor costs by 60-80% and eliminates product waste caused by manual counting/weighing errors. For example, a medium-sized hardware factory can save 5-8 labor costs per month and reduce product waste rate to less than 0.002% after using this machine.

Improved Product Quality & Brand Image: Consistent packaging weight and quantity ensure product standardization, enhancing customer trust and satisfaction. The neat and firm sealing also improves the appearance of the product, helping businesses stand out in the competitive market.

Customizable Solutions: Multiple models and optional devices are available to meet the specific needs of different industries and production scales. Customization options include multi-channel feeding for mixed packaging, waterproof design for humid environments, and special communication interfaces for production line integration.

Low Maintenance & Reliable After-Sales: The simple modular structure and fault self-diagnosis function reduce maintenance costs and downtime. Professional after-sales service provides installation, calibration and repair support, with a 1-year warranty and free lifetime technical guidance, ensuring uninterrupted operation.

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