Roll Handling Manipulator for Confectionery Production

In the confectionery manufacturing industry, packaging lines are increasingly automated with very high operating speeds to meet market demand. However, in many factories, the step of replacing packaging film rolls is still done manually, even though each roll can weigh from a few dozen to over a hundred kilograms.

The disparity between machine speed and human handling capability has created a significant bottleneck in the production process. Not only does it increase machine downtime and affect overall equipment effectiveness (OEE), but manual lifting of film rolls also poses many risks regarding occupational safety and material damage.

To solve this problem, many businesses are shifting to the application of industrial manipulators to optimize the feeding stage, enhance productivity, and ensure operational safety.

The Current State of Film Roll Feeding in Confectionery Factories

Characteristics of Current Industrial Film Rolls

To optimize operating time and limit the number of machine stops to replace materials, many confectionery factories today use large-format packaging film rolls (Jumbo Rolls). Depending on specifications and applications, the weight of each roll can range from 15 kg to over 150 kg, with a common diameter from 600 mm to 800 mm.

Not only do they have a large mass, but film rolls are also a particularly difficult material to handle due to their cylindrical shape, smooth surface, and difficulty in finding a grip when lifting. During the production process, workers often have to move film rolls from pallets placed close to the floor up to the packaging machine's shaft position at chest height or higher. With continuously operating lines, this operation can be repeated many times in each production shift.

As packaging speeds continuously increase, the film roll replacement stage becomes one of the most bottleneck-prone steps if it still relies entirely on human strength.

Potential Risks of Maintaining Manual Lifting

Using manual labor to lift and install heavy film rolls not only increases operational pressure but also brings multiple risks to the business.

Risks to Occupational Health and Safety

Lifting film rolls is a job that requires workers to frequently perform bending, body twisting, lifting heavy loads, and operating in confined spaces. These postures put significant pressure on the spine, shoulders, and joints, especially when the work is repeated continuously over multiple production shifts.

In the long term, the risk of musculoskeletal disorders (MSDs) can increase, directly affecting workers' health and the business's operational efficiency. At the same time, handling heavy film rolls manually also increases the risk of collisions, slips, or accidents during the working process.

Risks to Material and Product Quality

Packaging film is a high-value material and is highly sensitive to mechanical impacts. During manual transportation or installation, even a minor collision can dent the roll's edges, deform the paper core, or affect the film roll's structure.

These seemingly small damages can cause difficulties when installing onto the machine shaft, trigger film breakage errors during packaging, or force the business to discard a portion of unused material. This not only increases raw material costs but also affects the stability of the entire line.

Risks to Productivity and Overall Equipment Effectiveness (OEE)

While modern packaging machines can operate at very high speeds, changing film rolls manually often takes a lot of time and depends heavily on the operator's experience.

Every roll change means the line must temporarily stop operating. If the feeding process is slow or inaccurate, machine downtime will be prolonged, reducing overall equipment effectiveness (OEE) and directly affecting output.

For factories with multiple lines or continuous multi-shift operations daily, these interruption periods can accumulate into a significant loss in productivity and production costs.

Industrial Manipulator Solution for the Feeding Problem

To eliminate the limitations of manual lifting methods, more and more food and confectionery factories are choosing to apply industrial manipulators in the packaging film roll replacement stage. This solution helps operators handle heavy film rolls gently, accurately, and safely, while significantly reducing machine downtime during the feeding process.

More than just a lifting device, the industrial manipulator is designed to support the entire process from picking up the film roll on the pallet, moving it to the machine position, rotating it to the right orientation, and installing it precisely onto the feeding shaft. Thanks to this, a job that originally required a lot of manpower and posed high risks can easily be performed by a single operator.

Zero Gravity Technology for Effortless Lifting

The core principle of the industrial manipulator is load-balancing technology (zero gravity), which eliminates most of the lifting object's weight during operation. As a result, the operator only needs to apply a very small force to control the film roll moving up and down or to desired positions.

Currently, industrial manipulator systems on the market primarily use two main control technologies:

• Pneumatic technology: uses a system of cylinders and control valves to create a load-balancing force. This is a highly durable solution, operates stably, and is suitable for food production environments due to its ability to work safely in areas with a risk of fire, explosion, or industrial dust generation.
• Intelligent Electronic Technology (IAD): uses force sensors combined with servo motors to automatically detect loads and adjust lifting force in real-time. This technology offers precise control, quick response, and is suitable for applications requiring a high level of automation.

Regardless of the technology used, the common goal is to help operators control heavy loads gently, safely, and accurately.

Specialized Gripping Mechanism for Maximum Film Roll Protection

In the packaging film roll lifting application, the gripping mechanism plays a decisive role in operational efficiency and material protection capability. One of the widely used solutions today is the core clamping mechanism (Core Gripper or Expanding Mandrel).

Instead of clamping directly onto the outer surface of the film roll, the system secures the load from inside the paper core. When activated, the clamping jaws automatically expand and firmly grip the inner wall of the core, creating a safe connection throughout the lifting and moving process.

Thanks to this mechanism, the surface of the film roll remains completely unaffected by mechanical impact, helping to minimize the risk of scratches, dents, or material deformation. At the same time, the film roll is always kept stable during operation, contributing to minimizing incidents that could affect packaging quality.

Flexible Rotation and Tilting to Suit Production Reality

In many confectionery factories, film rolls are often stored vertically on pallets but must be installed horizontally on the machine shaft. This requires the lifting equipment not only to have lifting capability but also to perform precise rotating and tilting operations.

To meet this requirement, the industrial manipulator is integrated with a load rotating or tilting mechanism, allowing the film roll's placement angle to be easily changed right during transport. The operator can perform 90° or 180° rotations gently without using force or coordinating multiple people.

Particularly, the system always maintains a load-balanced state throughout the rotating and tilting process, helping the film roll move stably, limiting vibration, and ensuring safety when working in confined spaces. This is an important factor that makes film roll replacement faster, more accurate, and more consistent between production shifts.

Economic Benefits of Investing in an Industrial Manipulator

Investing in an industrial manipulator is not only a solution to reduce manual labor for workers but also a direct investment in the factory's operational efficiency. From reducing machine downtime and optimizing human resources to minimizing material waste, the system brings clearly measurable values in terms of productivity and costs.

Increasing Productivity and Improving Overall Equipment Effectiveness (OEE)

In high-speed packaging lines, every minute of machine stoppage directly affects output. Meanwhile, changing film rolls manually often takes a lot of time and heavily depends on the operator's skills.

Thanks to the ability to lift, move, and position film rolls quickly, the industrial manipulator helps significantly shorten roll change time, thereby reducing downtime and improving overall equipment effectiveness (OEE). For lines operating continuously over multiple shifts per day, saving just a few minutes during each roll change can create dozens of extra minutes of efficient production time daily.

Not only does it help increase the actual operating time of the packaging machine, but this solution also makes the roll replacement process consistent across shifts, reducing reliance on personal experience and minimizing errors during the feeding process.

Optimizing Human Resources and Reducing Operating Costs

With heavy film rolls, businesses often have to arrange two or more people to perform lifting and installation operations. This not only increases labor costs but also affects the ability to allocate resources to higher-value tasks.

When applying an industrial manipulator, a single operator can perform the entire roll change process easily and safely. As a result, businesses can optimize personnel in the packaging area while improving labor efficiency across the entire production line.

Enhancing Occupational Safety and Minimizing Emerging Risks

Workplace accidents not only affect workers' health but also bring about many indirect costs such as production interruptions, training replacement personnel, compensation, and related legal risks.

By eliminating heavy manual lifting operations, the industrial manipulator helps significantly reduce the risk of musculoskeletal injuries, collisions, or incidents during film roll replacement. This is an especially important factor for businesses aiming for a safe, sustainable working environment that meets modern management standards.

In addition to operational value, a safer working environment also contributes to improving employee satisfaction, reducing turnover rates, and retaining an experienced workforce.

Reducing Material Waste and Protecting Product Quality

Packaging film rolls are high-value materials that directly affect the quality of the finished product. During manual transportation or installation, unwanted collisions can deform the roll core, damage film edges, or cause errors during packaging.

With a specialized gripping mechanism and precise control capability, the industrial manipulator helps keep the film roll stable throughout the lifting and feeding process. This minimizes operation-induced damage, reduces material waste rates, and maintains stability for the packaging line.

Fast Payback Period and Increased Competitiveness

When combining the benefits of increased productivity, reduced downtime, optimized labor, and minimized material waste, the investment efficiency of an industrial manipulator system is often clearly demonstrated in a short time.

Depending on production scale, roll change frequency, and the factory's automation level, the payback period can range from a few months to a few years. However, the greatest value of the solution lies not only in the payback calculation but also in its ability to help businesses build a safe, stable, and highly competitive production line in the long term.

Besides, investing in modern lifting solutions also demonstrates the business's commitment to occupational safety and continuous improvement, contributing to meeting evaluation requirements from international customers as well as management standards such as ISO 45001 or SA8000.

Real-world Case Study

In recent years, Vietmani has implemented many industrial manipulator projects for food and confectionery factories in Ho Chi Minh City, Binh Duong, and key southern industrial zones. Due to customer confidentiality requirements, we do not disclose specific company names and equipment configurations. However, the operational problems these factories face often have many similarities.

The Customer's Problem

A large-scale confectionery factory in Binh Duong was operating multiple automated packaging lines with continuous film roll replacement frequencies throughout the day. The heavy film rolls required being lifted from the pallet onto the packaging machine shaft and precisely aligned before operation.

Before the improvement, the roll change process was mostly done manually with the support of multiple personnel. This caused prolonged machine downtime, posed occupational safety risks, and put great pressure on the operation team.

In addition, the business also recorded material damage due to collisions during the moving and installation of film rolls, affecting production efficiency and operating costs.

The Implemented Solution

After a practical survey process, the Vietmani engineering team designed and provided a specialized industrial manipulator system for the packaging film roll lifting application.

The solution was optimized according to the factory's actual installation space, integrating a clamping mechanism suitable for the film roll's characteristics and supporting rotating/tilting operations to move materials from the storage position exactly onto the packaging machine shaft.

The entire lifting, moving, and positioning process is performed via a load-balancing mechanism, helping the operator control the film roll gently, accurately, and safely.

Achieved Results

After putting the system into operation, the business recorded many clear improvements in production activities:

• Significantly shortened film roll replacement time compared to manual methods.
• Reduced machine downtime, contributing to improving the operational efficiency of the packaging line.
• Limited risks related to heavy lifting and improved working conditions for employees.
• Reduced the rate of material damage during transportation and installation.
• Standardized the roll change process across production shifts, reducing reliance on individual personnel's experience.

Actual results from implemented projects show that the industrial manipulator is not only a mere lifting support solution but also a tool to help businesses optimize production processes, improve productivity, and aim for a safer and more modern working environment.

Why Do Food Factories Choose Vietmani?

For food and confectionery manufacturing businesses, investing in an industrial manipulator system is not just buying a lifting device but also investing in a solution that helps improve long-term productivity, safety, and operational efficiency. Therefore, choosing a supplier with sufficient capacity to consult, design, and accompany throughout the project lifecycle plays a particularly important role.

As a unit researching, producing, and implementing lifting manipulator solutions in Vietnam, Vietmani not only provides equipment but also accompanies businesses from the stage of surveying the current status and designing solutions to installation, operational training, and after-sales maintenance.

Designing Solutions According to Each Factory's Reality

Each production line has its own requirements for load capacity, installation space, operating frequency, and material characteristics. Instead of applying a fixed configuration for every application, Vietmani focuses on practical surveys to build solutions suitable for specific needs.

For packaging film roll lifting applications, the system can be customized in terms of the gripping mechanism, lifting stroke, working radius, and rotating/tilting capabilities to ensure the equipment operates effectively under the factory's practical conditions.

Controlled Production Capacity and Quality

Vietmani's products are manufactured according to the ISO 9001:2015 quality management process, ensuring stability and durability when operating in high-intensity industrial environments.

Besides controlling equipment quality, the engineering team also performs practical evaluations and testing before handover to ensure the solution meets the customer's exact operational requirements.

Optimal Manipulator Technology for Food Production Environments

Vietmani's lines of industrial manipulators are developed based on load-balancing technology (Zero Gravity), helping operators control large loads gently and accurately.

The system is capable of handling various load levels, suitable for lifting applications of film rolls, material bins, product bags, or heavy production components. Flexible rotation designs along with integrated safety mechanisms help the equipment operate stably in continuous production environments.

Proactive in Schedule and Technical Services

Unlike fully imported equipment that often requires prolonged ordering and supply times, Vietmani is proactive in the design and manufacturing process in Vietnam. This helps shorten project implementation times while creating favourable conditions for upgrading or adjusting equipment when production needs change.

Additionally, Vietmani's technical team is always ready to support installation, operational training, periodic maintenance, and rapid troubleshooting, helping businesses maintain stable production activities throughout the usage process.

Implementation Experience Across Multiple Industries

Besides the confectionery and food industry, Vietmani's lifting manipulator solutions are currently applied in various other manufacturing sectors such as packaging, plastics, electronics, mechanics, automotive components, and consumer goods.

Practical experience from many implemented projects helps Vietmani clearly understand the specific requirements of each industry, thereby providing suitable solutions, optimizing investment efficiency, and ensuring long-term operational capabilities for businesses.

Conclusion

In the context of confectionery factories increasingly promoting automation and production optimization, the film roll feeding stage is no longer a simple task but has become a factor directly affecting productivity, overall equipment effectiveness (OEE), and occupational safety.

Maintaining manual lifting methods not only increases machine downtime, material waste, and labor costs but also poses many risks to workers. In contrast, applying industrial manipulators helps businesses standardize the roll change process, improve operational efficiency, reduce pressure on personnel, and build a safer, more modern production environment.

With practical implementation experience for many food and confectionery manufacturing businesses, Vietmani provides custom-designed industrial manipulator solutions tailored to the characteristics of the line and the operational needs of each factory.

Every packaging line has different requirements for load capacity, installation space, roll change frequency, and operational processes. Therefore, the most effective solution always starts with a practical survey.

Contact the Vietmani engineering team to:

• Survey and evaluate the current status of the production line.
• Consult on an industrial manipulator configuration suitable for the load and working space.
• Receive an optimal lifting solution proposal for packaging film roll applications.
• Calculate return on investment (ROI) and expected payback period.
• Watch demo videos and real projects implemented in the food industry.

Are you facing difficulties changing film rolls on your packaging line?

Please send information about the film roll's weight, core size, and current machine layout. The Vietmani engineering team will propose a suitable solution and calculate the investment efficiency for your factory.