Automatic Pallet Wrapper with Film Cutter: Clamp, Cut, Wipe

Name: Automatic Pallet Stretch Wrapping Machine with Film Cutter: Clamp, Cut and Wipe
Uploaded: 2018-04-17T09:26:42+00:00
Duration: 1 min 46 s
Description: > **Executive Summary** > An automatic turntable stretch wrapper only eliminates manual intervention if it reliably manages the film tail. The B100 achieves fully unmanned operation through an integrated pneumatic clamp-cut-wipe mechanism: mechanical scissors clamp the film tail prior to turntable rotation, an impulse heating wire severs the film at…

Executive Summary
An automatic turntable stretch wrapper only eliminates manual intervention if it reliably manages the film tail. The B100 achieves fully unmanned operation through an integrated pneumatic clamp-cut-wipe mechanism: mechanical scissors clamp the film tail prior to turntable rotation, an impulse heating wire severs the film at cycle completion, and a resilient wiping brush seals the tail firmly against the pallet face. Engineered for continuous industrial duty, the B100 processes pallet loads up to 1,800 kg (with a 2,000 kg structural safety margin) at a throughput of 24+ loads per hour, featuring a powered pre-stretch carriage calibrated at 250% standard (100%–300% adjustable).

The Clamp, Wrap, Cut and Wipe Sequence
How the Automatic Film Cutter Changes Packaging Workflows
Powered Pre-Stretch Ratio and Film Consumption Calculation
Turntable Dynamics and Carriage Elevation Parameters
PLC Control System and Wrap Program Architecture
Utilities, Pneumatic Requirements, and Machinery Safety Standards
Engineering Selection Checklist
Technical FAQ
Next Step and Rapid Proposal Protocol
Related Systems
References and Normative Standards

The Clamp, Wrap, Cut and Wipe Sequence

The primary failure point of entry-level stretch wrappers is film-tail unraveling during transport. The B100 resolves this through an edge-mounted pneumatic mechanical hand that executes four coordinated steps:

Step	Mechanism	Engineering Action
Clamp	Pneumatic Scissor Gripper	Secures the film leading edge against the turntable perimeter before rotation begins, eliminating manual tie-off.
Wrap	Powered Roller Turntable	Accelerates smoothly under VFD control, wrapping the unitized load to preset recipes.
Cut	Impulse Hot-Wire Element	An electrical impulse heats the cutting wire instantly upon cycle completion, cleanly separating the web.
Wipe	High-Density Brush Arm	Pivots dynamically against the rotating load face, smoothing and tacking the film tail onto the palletized carton surface.

The clamping assembly retains the film tail after the wipe phase, locking the film in position so the system is immediately primed for the subsequent pallet without operator reloading.

B100 automatic pallet stretch wrapping machine with turntable roller conveyor — **B100 automatic pallet wrapper.** Motorized turntable roller conveyor with integrated film clamp, cut, and wipe station.

How the Automatic Film Cutter Changes Packaging Workflows

In conventional semi-automatic wrapping operations, the forklift operator dismounts twice per pallet: once to tie the film to the bottom pallet block, and once to slice the web with an open knife and press the film tail.

The B100 automates both operations through mechanical integration:

Engineering Subsystem	B100 Technical Specification	Operational Benefit
Film Clamping	Dual-jaw mechanical scissor gripper	Zero manual film attachment; slip-free start
Cutting Method	Controlled impulse heating wire	Clean, wear-free cut on cast or blown LLDPE
Tail Finishing	Flexible brush with pneumatic stroke	Secure film adhesion without manual pressing
Positioning Sensing	Turntable home-position proximity switch	Precision mechanical synchronization
Cycle Readiness	Automatic retention of primary film tail	Forklift operators remain seated

When paired with upstream and downstream conveyor spurs, the forklift driver deposits the pallet and departs immediately. The machine completes the wrapping, cuts the film, tacks the tail, and signals the outfeed conveyor.

Maintenance Protocol: The heating wire and pneumatic cylinders require standard preventive maintenance checks. Ensure replacement nichrome heating elements are in stock, and verify incoming compressed air is treated with an FRL (Filter-Regulator-Lubricator) set within 0.6–0.8 MPa (6–8 bar).

Powered Pre-Stretch Ratio and Film Consumption Calculation

The B100 features a powered pre-stretch film carriage driven by an independent 0.37 kW gear motor. By routing the film between two rollers geared at differential surface velocities, the film is elongated prior to application.

Standard pre-stretch is fixed at 250% (1 m of master roll film yields 3.5 m applied film). Ratios of 100% to 300% are available via optional gear pairs.

Film Consumption Calculation

For a standard European/Australian pallet (1,200 mm × 1,000 mm) wrapped with 15 revolutions:

Load Perimeter: 2 × (1.2 m + 1.0 m) = 4.4 m
Applied Film Length: 4.4 m × 15 wraps = 66 m
Effective Master Roll Consumption: 66 m ÷ 3.5 = 18.86 m (~19 m)
Yield per Standard 1,500 m Master Roll: 1,500 m ÷ 18.86 m ≈ 79 pallets

(Expressed in SEO-standard notation: Film Applied = Pallet Perimeter × Total Wraps)

Because pre-stretch occurs inside the carriage, film tension is decoupled from the load stability. Fragile, lightweight carton stacks that would collapse under traditional mechanical-brake tensioners remain perfectly intact.

Consumable Specifications: 500 mm web width, 76 mm core diameter, 20–35 µm standard LLDPE film.

Turntable Dynamics and Carriage Elevation Parameters

Kinematic / Dimensional Parameter	B100 Standard Metric
Rated Load Capacity	1,800 kg (2,000 kg structural frame design)
Throughput Speed	≥ 24 pallets per hour (process dependent)
Turntable Disk Diameter	2,200 mm
Turntable Rotational Speed	0–12 RPM (VFD ramped soft-start / soft-stop)
Conveyor Top-of-Roller (TOR) Height	~400 mm
Carriage Vertical Speed	2.9 m/min (smooth chain/sprocket hoist)
Wrapping Layer Configuration	Top, Middle, Bottom independent (0–99 layers)

The turntable assembly rotates on a heavy-duty ring-gear slew bearing, delivering high lateral stiffness under off-center loading. A photoelectric eye automatically scans pallet height up to 2,000 mm (expandable to 2,400 mm), eliminating the need to adjust height limits manually for varying SKU mixes.

Line Integration & Cycle Budget

The Top-of-Roller (TOR) elevation of 400 mm acts as the master datum for integrating powered gravity or motorized roller conveyors.

Cycle Time Breakdown:

Target Productivity: 24 pallets/hour = 150 seconds per pallet cycle
Active Rotation Time (15 turns @ 12 RPM): 75 seconds
Automation Window (indexing, VFD acceleration, home positioning, hot-wire cutting, brush wipe): 75 seconds

PLC Control System and Wrap Program Architecture

The electrical enclosure houses a dedicated programmable logic controller (PLC) coupled with an intuitive digital interface and industrial pushbuttons:

Control Element	Engineering Implementation
Core Architecture	Industrial PLC (Siemens / Mitsubishi compatible)
Operator Interface	Ergonomic pushbuttons + multi-parameter HMI
Overlap Adjustment	Variable carriage speed control for pitch overlap
Load Top Treatment	Selectable overwrap cycle or top-sheet pause program
Production Tracking	Non-resettable master counter & shift-resettable batch counters

Utilities, Pneumatic Requirements, and Machinery Safety Standards

Utility Infrastructure	Consumption / Technical Requirement
Electrical Supply	AC 380 V, 3-Phase, 50 Hz (Optional 220 V / 480 V, 60 Hz)
Turntable Drive Motor	0.75 kW AC Geared Motor
Conveyor Roller Motor	0.75 kW Heavy-Duty Drive
Carriage Elevator Motor	0.37 kW Brake Motor
Pre-Stretch Roller Motor	0.37 kW Inverter-Rated Drive
Compressed Air Supply	0.6–0.8 MPa (6–8 bar), ~1.0 NL/cycle dry pneumatic air

Safety Compliance and Harmonized Standards

The machine conforms to the European Machinery Directive 2006/42/EC and international safety protocols:

EN 415-6:2013: Specific safety requirements for pallet stretch wrapping machines (Type C harmonized standard).
ISO 12100:2010: Comprehensive risk assessment and risk reduction methodology.
EN ISO 13849-1: Safety-related parts of control systems (SRP/CS), covering emergency stop circuits, dual-channel E-stop buttons, and perimeter interlocks.

Engineering Selection Checklist

Before issuing a Request for Quotation (RFQ), confirm your packaging line envelope against these critical constraints:

Pallet Profile: Maximum length × width × height (including pallet base) and minimum/maximum gross weight.
Throughput Target: Required continuous pallets per hour (peak shift demand).
Conveyor Interface: Standalone turntable or inline motorized conveyor integration (verify TOR datum at 400 mm).
Film Specification: Core diameter (76 mm standard), web width (500 mm), and film gauge (17–35 µm).
Pneumatic Supply: Dry plant air available at 0.6–0.8 MPa at the machine connection point.
Top Protection: Standard open wrap versus top-sheet dispensing for dust/rain protection.

Technical FAQ

Q: Does an operator need to tie or cut the film manually?
A: No. The automated mechanical gripper clamps the film tail, an impulse heating element cleanly cuts it, and a brush wipes the tail flat against the load at the conclusion of every cycle.

Q: What is the continuous rated capacity of the B100?
A: The standard cycle rate is 24 loads per hour minimum for standard 15-wrap programs, with a continuous load rating of 1,800 kg.

Q: How much stretch film is consumed per pallet?
A: At the standard 250% pre-stretch setting, a 1,200 × 1,000 mm pallet wrapped with 15 rotations consumes approximately 19 meters of film from the master roll (expanding to 66 meters on the load).

Q: Can the turntable safely handle unstable loads?
A: Yes. The powered pre-stretch carriage stretches the film between internal motorized rollers rather than against the load itself, preventing fragile or lightweight cartons from being pulled off center.

Q: What are the compressed air requirements?
A: The machine requires clean, dry compressed air regulated between 0.6 and 0.8 MPa (6–8 bar), consuming approximately 1.0 NL per complete clamp-cut-wipe actuation.

Next Step and Rapid Proposal Protocol

Optimize your downstream palletizing operations with an engineered proposal delivered within 48 hours:

Submit Layout & Load Specs: Email your pallet dimensions (L × W × H), maximum payload weight, and required pallets-per-hour to info@fhopepack.com.
Receive Engineering Scope (48 Hours): Our application team will return a customized proposal covering conveyor elevations, clamp-and-cut cycle times, and electrical integration options.
Line Integration Validation: Schedule a technical review with our packaging machinery team to confirm infeed/outfeed conveyor heights and PLC communication handshakes.