Loss‑in‑Weigh失重式喂料机，失重称

Loss‑in‑Weight 失重式喂料机（LIW）

网页标题：Loss‑in‑Weight Gravimetric Feeder｜Continuous Loss‑in‑Weight Feeder for Extrusion SEO标签：Loss‑in‑Weight feeder, LIW feeder, gravimetric loss‑in‑weight feeder,失重式喂料机,连续失重配料机

Product Overview

English Loss‑in‑Weight(LIW) Gravimetric Feeder is continuous closed‑loop gravimetric dosing equipment for plastic extrusion compounding lines. Each feeding hopper is fully mounted on independent high‑precision load‑cells. System calculates real‑time mass flow by measuring weight‑loss rate of material inside hopper, dynamically adjusts screw speed to keep stable feeding rate. It handles pellets, powder, talcum powder, calcium carbonate, glass fiber and various micro‑additives. Multiple LIW feeders can form multi‑component continuous batching station, synchronize with extruder speed. Widely used for twin‑screw compounding, PET/rPET recycling, cast film, high‑speed blown‑film, sheet extrusion. Different from GIW gain‑in‑weight batch blender, it works non‑stop without batch cycle pause。

中文 失重式喂料机LIW是挤出造粒产线连续闭环重量计量设备。每一路料斗整体搭载独立高精度称重传感器，系统监测料斗内部物料重量下降速率，计算实时质量流量，动态调节螺杆转速稳定下料速率。 可处理颗粒、滑石粉、碳酸钙、玻纤、各类微量功能助剂。多台失重喂料机可组成多组份连续配料站，与挤出机转速联动同步。广泛应用双螺杆改性造粒、PET/rPET回收、流延膜、高速吹膜、片材挤出。区别于GIW增重批次混料机，无批次循环，实现不间断连续喂料。

Working Principle

English

1. Whole hopper together with material is weighed by independent load‑cell.
2. Controller calculates real‑time feeding flow rate according to weight reduction per unit time.
3. PID closed‑loop control automatically adjusts screw motor speed to eliminate flow deviation, maintain target mass flow.
4. When material drops to low level, system switches to volumetric mode for fast refill. After refill finished, switch back to loss‑in‑weight gravimetric mode immediately. Realize 24‑hour non‑stop production。

中文

1. 整套料斗连同物料由独立称重传感器承托；
2. 控制器根据单位时间料斗重量减少量，计算实时喂料流量；
3. PID闭环控制自动调节螺杆电机转速，消除流量偏差，稳定目标质量流量；
4. 物料下降至低位，系统短暂切换容积模式快速补料；补料结束立刻切回失重计量模式，实现24小时不间断生产。

Main Technical Specifications

English ‑ Feeding type: Single‑screw / Twin‑screw loss‑in‑weight feeder ‑ Feeding range: 0.1kg/h ~ 3000kg/h per unit ‑ Dosing accuracy: ±0.2% ~ ±0.5% ‑ Material‑contact parts: 304 stainless steel ‑ Control: Siemens PLC + touch‑screen, recipe storage, USB export ‑ Communication: Optional OPC‑UA, synchronize signal with extruder ‑ Power supply: 380V 3‑phase ‑ Material applicable: pellets, powder, glass fiber, masterbatch, fillers

中文 ‑喂料形式：单螺杆 /双螺杆失重喂料机 ‑单机喂料范围：0.1kg/h ~ 3000kg/h ‑计量精度：±0.2% ~ ±0.5% ‑接触物料：304不锈钢 ‑控制：西门子PLC+触摸屏，配方存储，USB生产记录导出 ‑通讯：可选OPC‑UA，挤出机同步信号 ‑供电：380V三相 ‑适配物料：颗粒、粉体、玻纤、色母、填充助剂

Key Advantages

English

1. True continuous gravimetric feeding, no batch pause, match high‑speed extrusion production.
2. Excellent performance for powder, glass‑fiber and micro‑additive dosing, not sensitive to material density fluctuation.
3. Feeding rate automatically synchronizes with extruder running speed.
4. Real‑time monitoring for bridging, blockage, material shortage, complete alarm function.
5. Support multi‑unit combination for centralized continuous batching station, connect with MES / ERP via OPC‑UA.

中文 1.真正连续重量喂料，无批次停顿，适配高速挤出生产线。 2.粉体、玻纤、微量助剂添加表现优异，不受物料密度波动干扰。 3.喂料速率可以跟随挤出主机转速自动同步调整。 4.实时监测物料架桥、堵料、缺料，完整报警保护。 5.多台组合搭建中央连续配料站，OPC‑UA对接MES/ERP系统。

Disadvantages

English

1. High initial investment cost, much higher than GIW gain‑in‑weight blender.
2. Each unit owns independent load‑cells, requires separate regular calibration.
3. Sensitive to workshop vibration, anti‑vibration installation required.
4. Time‑consuming cleaning during frequent color / material change‑over.

中文 1.设备初期投入高，远高于GIW增重批次混料机。 2.每台设备独立传感器，需要分别定期校准维护。 3.对车间震动敏感，安装需要做减震处理。 4.频繁换色换料工况，拆装清洗工作量大。

Application Fields

English Twin‑screw compounding & pelletizing, PET/rPET recycling modification, cast film, high‑speed blown‑film, sheet & board extrusion, non‑woven fabric, engineering plastic production.

中文 双螺杆改性造粒、PET/rPET回收改性、流延膜、高速吹膜、片材板材挤出、无纺布、工程塑料生产。

Optional Accessories

English Import high‑precision load‑cell, anti‑vibration mounting base, auto‑refill hopper, CE export certification, OPC‑UA communication module.

中文 进口高精度称重传感器、减震底座、自动补料料斗、CE出口认证、OPC‑UA通讯模块。

Price Note

English Loss‑in‑Weight gravimetric feeder belongs to custom‑built extrusion auxiliary equipment. Price depends on feeding range, screw type, sensor grade and communication options. Please provide production parameters for formal quotation.

中文 失重式喂料机属于挤出非标辅机，价格取决于喂料量程、螺杆型式、传感器等级、通讯选配，请提供工况获取正式报价。

中文

失重式喂料机LIW为连续动态计量，适合高速挤出造粒、粉体玻纤配料；增重批次混料机GIW为批次循环工作，性价比高，多用于注塑、普通吹膜。

English

English
Loss‑in‑Weight(LIW) feeder provides dynamic continuous dosing for high‑speed compounding and powder / glass‑fiber feeding. Gain‑in‑Weight(GIW) blender runs in batch cycles with cost advantage for injection molding and conventional blown‑film.