Introduction to Automatic Packaging Unpacking Machine System

Automatic bag-breaking machine systems are specialized equipment designed for automated bag breaking, dust-free unloading, waste bag separation and collection of bagged powder/granular materials (25–50kg small bags, 1–2 ton bags). They are often connected with pneumatic conveying, tubular chain conveying, silos, etc., to form automated feeding production lines, and are widely used in chemical, food, pharmaceutical, new energy, building materials and other industries.

I. Core Types

1. Automatic bag unpacking machine (25–50kg/bag)

• Applications: Powders/granules packaged in woven bags, paper bags, and plastic bags.
• Process: Feeding and conveying → Positioning and clamping → Rotary cutter to break bags → Vibrating screen for unloading → Waste bag discharge → Pulse dust collection.
• Features: High efficiency (300–600 bags/hour), sealed and dust-free environment, low residue.

2. Automatic ton bag unpacking machine (1–2 tons/bag)

• Applications: Bulk materials in flexible ton bags (PP ton bags)
• Process: Overhead crane/hoist hoisting → clamping and positioning → bag bottom cutter breaking the bag → gravity + vibration unloading → empty bag collection → sealed dust collection
• Features: Large processing capacity (5–20 tons/hour), explosion-proof, suitable for high dust/high-value materials

3. Fully automated unpacking line (unmanned operation of the entire pallet)

• Integration: Depalletizing robot + 3D vision + automated unpacking + waste bag compression + pneumatic conveying
• Suitable for: Large-scale continuous production, fully unattended operation

II. System Composition

1. Material feeding and conveying: Belt/roller conveyor, ton bag lifting device
2. Bag breaking mechanism: Rotary cutter/ultrasonic cutter, clamping and positioning device
3. Screening and unloading: Rotary drum screen, vibrator (anti-bridging, reduces residue)
4. Dust collection system: Pulse bag filter/cartridge filter, zero dust spillage
5. Waste bag treatment: Waste bag conveyor, collection box, compression baler
6. Control system: PLC + touch screen, one-button start/stop, interlock protection, remote monitoring
7. Interfacing equipment: Silos, pneumatic conveyors/tube chain conveyors, mixers, reactors, etc.

III. Working Principle (Taking a Small Bag as an Example)

Bagged materials are fed into a sealed box by a conveyor → fixed by a pneumatic bag clamp → the bag is cut open by a high-speed rotating blade → the material is screened by a drum screen and falls into a hopper → the bag is beaten by a vibrating device to reduce residue → the empty bag is discharged to a collection box → the whole process is negative pressure dust removal, and dust does not overflow.

IV. Core Advantages

• ✅ Dust-free and environmentally friendly: Fully enclosed + negative pressure dust removal, meets GMP/explosion-proof requirements
• ✅ High efficiency and labor saving: Replaces manual bag handling, cutting, and shaking, increasing efficiency by 3–5 times
• ✅ Low residue: Vibrating screening + tapping, residue ≤0.5%
• ✅ Safe and reliable: Explosion-proof design, emergency stop interlock, anti-pinch protection
• ✅ Flexible connection: Can be directly connected to pneumatic conveyors, silos, mixers, and other equipment

V. Application Scenarios

• Chemicals: Plastic granules, fertilizers, titanium dioxide, carbon black, resin powder
• New Energy: Lithium iron phosphate, graphite, ternary materials, conductive agents (explosion-proof and anti-static)
• Food: Flour, starch, milk powder, white sugar, food additives (food-grade stainless steel)
• Pharmaceuticals: Raw materials for pharmaceuticals, pharmaceutical excipients, traditional Chinese medicine powder (GMP cleanroom type)
• Building Materials: Cement, fly ash, gypsum, quartz sand, dry mortar raw materials

VI. Relationship with Pneumatic Conveying

Automatic bag unpacking machines handle "bag breaking and unloading," while pneumatic conveying systems handle "long-distance dust-free transport." The two are often used in combination:

Bagged materials → Automatic bag unpacking machine → Hopper → Pneumatic conveying system → Production equipment