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Weighing & Quantitative Filling Machine Series Selection Guide & Product Overview

I. What is an Automatic Quantitative Weighing Filling Machine?

1.1 Core Definition

An Automatic Quantitative Weighing Filling Machine (or Combination Scale) is an automated equipment that utilizes microcomputer control systems and high-precision load cells to accurately and rapidly portion bulk materials (granules, powders, irregular solid pieces) into packaging bags or containers according to a preset target weight. Our series covers complete weighing solutions, ranging from single-head desktop micro-fillers and multi-head high-speed combination scales, to heavy-duty bulk bagging machines and end-of-line dynamic checkweighers.

1.2 Working Principles

Depending on the model, the core weighing logic is divided into three main categories: 1. Single/Dual/4-Head Linear Vibratory Weighing (FM Series, TD-2M/4M): Materials are fed into the weighing hopper via a stepless vibratory pan. The load cell monitors the weight in real-time. As it approaches the target, the vibration slows down (fine feeding) and stops exactly at the preset weight before opening the gate to discharge. 2. Multi-head Computerized Combination Weighing (TD-10 / TD-14): Material is distributed into 10 or 14 independent weighing hoppers. The microcomputer reads the weight of all hoppers in milliseconds, calculates all possible combinations, and instantly selects the specific combination of hoppers whose total weight is closest to the target weight, achieving a perfect balance of extreme precision and high speed. 3. Dynamic In-line Checkweighing (TD-1C1): Products pass over a weighing module on a moving conveyor belt. The system dynamically captures the weight and compares it against preset upper/lower limits, triggering an alarm or a rejection mechanism if the product is out of tolerance.

1.3 Core Values

  • Extreme Material Saving: Eliminates the errors of traditional manual weighing. High-precision combination scales (error as low as 0.1g) prevent the "over-giving" of high-value materials, directly increasing your profit margin.
  • Efficiency Leap: Speeds range from a few bags to up to 60 bags per minute. Can be operated standalone via foot pedal or seamlessly integrated with fully automatic vertical packaging machines.
  • Flexible Production: The smart control panel/HMI touch screen can store multiple product recipes. Switching products only requires recalling the preset parameters with one click.
  • Versatile Applications: From food and agriculture to chemicals and hardware, applicable to almost any non-sticky material with decent flowability.

1.4 Applicable Industries

  • Food & Agriculture: Rice, grains, nuts, sugar, salt, coffee beans, seeds, tea leaves, seasoning powders.
  • Industrial & Hardware: Screws, nuts, bolts, plastic parts, small fasteners.
  • Chemical & Pharmaceutical: Fertilizer granules, herbal medicine slices, capsules, coarse powders.
  • Quality Control (QC): Finished package weight inspection (detecting missing manuals/desiccants or under-weight bags).

II. Differentiated Selection Overview

(A) FM Series: Single-Head Basic Quantitative Fillers (Ideal for Startups/Low-cost Flexible Packaging)

All models support foot-pedal discharge, with an error range of ±0.2~2g, suitable for low/medium speed or semi-automatic manual bagging.

Model Weighing Range Hopper Size (LWH) Machine Weight Core Features Application Scenarios
FM-50 1~50 g Φ20*15 cm 9 KG Most compact, micro-gram weighing, extremely high precision. Premium tea, flower tea, micro screws sampling.
FM-500 10~500 g 262636 cm 16 KG Mainstream desktop model, high cost-performance. Coffee beans, snacks for startup brands.
FM-999 10~999 g 303040 cm 30 KG Floor-standing design, moderate capacity. Daily food, hardware under 1kg.
FM-3000 10~3000 g 303040 cm 30 KG Enlarged weighing module. Ag-products, seeds, pet food under 3kg.
FM-5000 10~5000 g 404045 cm 40 KG Large hopper design. Catering ingredients, fertilizers, mid-size feed bags.
FM-9999 100~9999 g 484842 cm 50 KG Largest capacity in FM series, nearly 10kg per drop. Large hardware factories, bulk grains, coarse powder packing.

(B) TD Linear & Multihead Scale Series (Ideal for Mid-to-Large Factories / Auto-lines)

Modular control system, stepless vibratory feeding. Can be used standalone semi-automatically or docked with packaging machines for mass production.

Model Heads Weighing Range Avg. Precision Speed (Bags/min) Core Features & Advantages Application Scenarios
TD-2M 2-Head Linear 20-2000 g 1~2 g 30 Heads work alternately, high ROI, supports 2-item mixing. Small/mid food plants, replaces two single-head scales.
TD-4M 4-Head Linear 20-2000 g 1~2 g 30 4 independent heads, excels at precise ratio mixing of multiple materials. Mixed nuts, multi-grain blends recipe packaging.
TD-10-0.5L 10-Head Multihead 50-1000 g 0.1~1 g 10-60 High-speed PC combination, extremely fast, ultimate material saving. High-value items (specialty coffee/seeds), high-speed auto lines.
TD-14-0.5L 14-Head Multihead 50-2000 g 0.1~1 g 10-60 Top-tier calculation matrix, wider range, superior multi-zone mixing. Large food plants, large single-dose or complex multi-item rapid mixing.

(C) Bulk Bagging & In-line QC (Specialized Applications)

Model Product Name Applicable Range Speed / Precision Core Functions & Scenarios
A-25 Heavy Bag Bagging Scale Up to 25 KG (55.1 lbs) per drop 5-7 Bags/min Designed for bulk materials like rice, fertilizer, feed. Manual bagging, auto-weighing, includes conveyor to sewing station to reduce manual labor.
TD-1C1 Dynamic Checkweigher 10-1000 g finished packages 10-60 Bags/min
Prec: 0.5~1.5g		 The final QC gate for packaging lines. Detects missing manuals/pills inside boxes/bags. Auto-alarms or triggers rejector for under/overweight items.

III. Core Selection Advice

3.1 Selection by Material Characteristics

  1. Excellent flowability crystals/coarse granules (Rice, beans, sugar, salt): All models in this catalog are perfectly suitable.
  2. Dry powders with some flowability (Seasoning powder, washing powder): FM Series and TD Linear scales are applicable.
  3. Ultra-fine, dusty, or sticky powders (Flour, fine milk powder): [WARNING] These materials are NOT suitable for the vibratory feeding machines in this catalog as they will compact, bridge, or severely pollute sensors with dust. Please select our "Auger Filler (Screw Metering)" machines instead.
  4. Fragile, high-value materials (Freeze-dried food, premium herbs): Highly recommend TD-10 / TD-14 Multihead Scales. Their smooth feeding and extreme precision protect material integrity and minimize weight giveaway.

3.2 Selection by Capacity & Automation Level

  1. Startups / E-commerce / Low-frequency filling: FM Series standalone. Low investment, small footprint, simple foot-pedal operation. Pair with a manual sealer.
  2. Mid-size factory / Recipe Mixing: TD-2M / TD-4M Linear scales. Moderate speed, meets basic automation upgrade needs and mixing requirements.
  3. Modern automated line / Unmanned workshop: TD-10 / TD-14 Multihead scales. Dock with Z-bucket elevators and VFFS (Vertical Form Fill Seal) machines for 24/7 high-speed unmanned production.

3.3 Selection by Target Weight per Bag

  1. Micro-dose (<50g): Choose FM-50.
  2. Standard bags (50g - 2000g): Mid-size FM series or any TD series. If high precision is strictly required, choose 10/14-head multihead scales.
  3. Heavy bags (3kg - 10kg): Choose FM-5000 or FM-9999.
  4. Bulk woven/kraft bags (25kg level): Must choose the A-25 Heavy Bagging Scale.

IV. General Technical FAQ

4.1 Machine Applications & Limitations

Q: Can this machine kick out products with incorrect weights? A: Filling machines (FM/TD series) are only responsible for dispensing the target weight. If you need to inspect the weight of already sealed packages and reject the unqualified ones from the line, please purchase the TD-1C1 Dynamic Checkweigher and add an optional rejector (e.g., pusher or air blow).

Q: Why do you say flour cannot be used with these machines? A: The equipment in this catalog uses a "Vibratory Feeding" principle. Ultra-fine powders like flour or cocoa powder will compress and clump (bridging) under vibration, failing to flow, or create severe dust that ruins the electronic load cells. Fine powders MUST use "Auger (Screw) Filler" equipment.

4.2 Operation & Maintenance

Q: How does mixed dispensing work? (For TD-4M/10/14-head) A: In the smart touch screen, you can group different weighing heads. For example, on a TD-4M, you can set Head 1 for 50g walnuts, Head 2 for 30g almonds, and Head 3 for 20g raisins. Once triggered, the machine will discharge a perfectly mixed 100g of trail mix in a single drop.

Q: Is the machine easy to clean? A: All contact parts are made of food-grade stainless steel. The hoppers on the TD series multihead scales feature a snap-on design. Operators can detach all hoppers bare-handed without any tools for water washing and sanitizing, which is extremely convenient.

4.3 Power & Warranty

Q: What are the voltage and air supply requirements? A: Standard configurations support Single-Phase 220V (some small FM models support 110V). Heavy-duty equipment like the A-25 supports 3-Phase 380V. Pure weighing equipment generally does not require an air compressor; however, if paired with pneumatic packaging machines or specific bag clamps, the customer must provide an air supply. Q: What is the warranty policy? A: The entire series comes with a standard 1-year machine warranty (excluding wearing parts like belts or heating tubes), along with lifetime technical support and maintenance services.

V. Production Line Matching & System Integration

We provide not just single weighing machines, but complete end-to-end packaging line solutions:

  1. Upstream Feeding: Optional Z-type bucket elevators, inclined belt conveyors, or steep incline skirt conveyors for automated material loading. Includes auto-sensors to replenish material when running low, freeing up manual labor.
  2. Support Platforms: For heavier equipment like TD-10/14 multihead scales, we provide standard carbon steel / stainless steel support platforms with guardrails and stairs, ensuring the weighing modules are isolated from ground vibrations.
  3. Downstream Packaging Integration: Our weighers feature standard signal interfaces to seamlessly dock with VFFS (Vertical Form Fill Seal) machines, Premade Pouch Packers, continuous sealers, and conveyors.
  4. Overseas Customization: For export orders, we support 110V/60Hz voltage customization, and the HMI touch screens can be programmed with English, Spanish, and other multi-language interfaces.

VI. Standard Operating Procedures (SOP - using TD Multihead Scale as an example)

  1. Self-check & Warm-up: Turn on the power; the HMI system initializes and automatically performs a zero-calibration for all load cells.
  2. Recipe Setup/Recall: Call up the preset product program on the touch screen (including target weight e.g., 500g, upper/lower tolerances, and vibration amplitudes for the main/linear pans).
  3. Auto-Feeding: Start the synchronized bucket elevator to continuously supply materials to the central main vibratory pan on top of the scale.
  4. Smart Distribution & Weighing: The main pan distributes material evenly to the surrounding linear pans, which then drop into the individual weighing hoppers.
  5. Millisecond Calculation: The computer motherboard reads data from all hoppers in milliseconds and automatically selects the optimal combination of hoppers that exactly equals 500g.
  6. Synchronized Discharge: Upon receiving the "Ready" signal from the downstream packaging machine, the selected hoppers instantly open their gates, dropping the material accurately into the bag to complete one cycle.
  7. Shutdown & Cleaning: After production, use the one-click "empty material" function, disconnect the power, and detach the hoppers bare-handed for cleaning.