When to Use Robotic Palletizer？

Posted by Ben Cisneros on November 11,

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No matter the type of industrial facility you manage, it&#;s crucial that you maintain efficiency in your operations. With the right palletizing solution, you can ensure smooth logistics throughout your warehouse. Palletizing involves stacking goods on pallets for handling, shipping, or storage applications. To improve your supply chain management, it&#;s highly recommended that you implement effective palletizing in your facility.

Palletizing can be separated into two categories, which include robotic and manual palletizing. While both of these solutions can help you improve efficiency in your warehouse, there are pros and cons to each option. Should you choose manual or robotic palletizing? This guide compares the differences to help you make the right choice.

What Is Manual Palletizing?

Manual palletizing occurs when your employees stack items or boxes onto pallets or conveyors by hand. While this is a time-consuming palletizing method, it has a low upfront cost. Manual palletizing has been used in warehouses for decades. The types of industries where manual palletizing is common include woodworking, cosmetics, and glass beverage.

Advantages of Manual Palletizing

Manual palletizing is still in use today because it offers many notable advantages, including everything from added flexibility to a simple setup.

• Flexibility: Workers are able to handle different sizes, weights, and shapes of products without needing to input special programming.
• Low Initial Cost: You don&#;t need to invest in a large amount of equipment to get started with manual palletizing, which is why it&#;s often employed by small businesses.
• Simple Setup: Manual palletizing is easy to integrate into existing processes. You don&#;t need special software or machinery for this form of palletizing.

Challenges of Manual Palletizing

While there are many benefits of manual palletizing, there are several issues that are impossible to mitigate entirely.

• Worker Fatigue: The main issue with manual palletizing is worker fatigue. This process is physically demanding, which means that it can eventually lead to lower worker productivity and injuries.
• Inconsistent Results: Humans make mistakes that can result in issues with pallet quality and stability. If inconsistencies arise with how products are stacked, the entire pallet could become unstable.
• Limited Scalability: A manual palletizing system is significantly slower than an automated one, which causes problems in high-volume environments. If you&#;re seeking rapid growth, robotic alternatives might be better.
• Ongoing Costs: Even though the upfront costs are low, the ongoing expenses can be high. You&#;ll need to pay your employees regularly, which means that your costs will include administration, labor, injury compensation, and supervision.

What is Robotic Palletizing?

Robotic palletizers are machines that can effectively stack products on pallets, often with sensors and AI. These systems are outfitted with a programmable logic controller that allows warehouses to input highly specific tasks. The robot can create layers on a pallet and pick multiple units off a conveyor at once. Robotic palletizers are often found in the following industries:

• Food and beverage
• Automotive
• Consumer goods
• Logistics
• Pharmaceutical
• Furniture
• Cosmetics

Advantages of Robotic Palletizing

Robotic palletizing offers many advantages, which include better efficiency and improved safety.

• Increased Efficiency: These palletizers work continuously, which should improve throughput in your warehouse.
• Enhanced Precision: Robots are able to consistently stack items with precision, which mitigates the potential of unstable pallets or product damage.
• Reduced Labor Costs: Once you install robotic palletizers in your warehouse, you can start reducing your dependency on human labor for repetitive tasks.
• Improved Safety: Stacking pallets is a physically demanding task. When using robotic palletizing, you can reduce the number of workplace injuries that occur.

Challenges of Robotic Palletizing

Even though robotic palletizing can boost efficiency in most manufacturing facilities and warehouses, there are also some challenges associated with this option.

• High Initial Investment: The upfront costs for robotic palletizers are high. You&#;ll need to buy software and hardware for the system.
• Complex Setup: These palletizers require programming and proper setup to ensure they integrate well with existing systems.
• Limited Flexibility: Robotic palletizers can have difficulty loading fragile or irregular products, which isn&#;t an issue when using manual labor.

Key Considerations for Choosing Between Manual and Robotic Palletizing

Below are some of the important considerations you should think about before buying palletizers for your warehouse.

• Production Volume: If you have a low-volume warehouse, you may benefit more from using manual palletizing to handle diverse product types. Robotic palletizers accommodate high-volume applications and can boost efficiency in your warehouse.
• Cost Considerations: Make sure you consider the upfront costs associated with robotic systems as well as the long-term savings when it comes to labor expenses. While the initial investment for manual palletizing is small, the ongoing costs are high. Robotic systems save you money over time.
• Space and Layout: If you decide to use robotic systems in your warehouse, you must have an ample amount of dedicated space. Manual systems are more flexible in this matter.
• Labor Availability and Safety: Warehouses often experience issues related to labor shortages and safety concerns for manual palletizing.

In comparison, robotic palletizing isn&#;t as dependent on manual labor. With automation, you&#;ll be able to reduce the number of repetitive strain injuries that take place. Robotic systems are also equipped with numerous safety features.

Robotic systems provide better scalability if you intend to grow your business. You can scale to meet higher production demands without needing to spend a large sum of money. Manual palletizing can&#;t adapt to increasing demand.

Comparing Conventional vs. Robotic Palletizers

Before buying palletizers for your warehouse, consider the differences between conventional and robotic systems.

Conventional Palletizing: This form of palletizing uses low-level and high-level mechanical systems that have human involvement. Low-level palletizers are designed to handle products that are carried by conveyors. The system will rotate and align the item to create a row that&#;s based on the specific pallet configuration.

High-level palletizers also use conveyors. However, the pallet can be lowered or raised to adhere to the product layers on the pallet, which ensures more efficient palletizing. The infeed conveyor that this system uses comes with an elevation that reaches 84&#; or higher.

Robotic Palletizing: These are fully automated systems that can perform repetitive tasks with a considerable amount of precision. If you select a fully automated model, it might be equipped with an exit pallet conveyor, a pallet dispenser, and a slip sheet dispenser for enhanced speed.

When comparing conventional and robotic palletizing, there are many differences regarding flexibility, space, speed, cost, and maintenance. For example, robotic palletizers allow you to load pallets at a faster speed. This technology is also more reliable than conventional palletizing.

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While robotic palletizers come with a higher initial investment, manual palletizing involves more ongoing costs. You&#;ll also discover that conventional palletizing is more flexible, which means that your employees can load many different shapes and sizes of items with ease. The maintenance requirements associated with robotic palletizers can be high.

Hybrid Palletizing Solutions: A Middle Ground

Hybrid palletizing combines manual labor with automation. It&#;s ideal for operations that require efficiency and flexibility without making a full commitment to automation. A robotic arm is attached to a controlled conventional frame, which allows you to save space. You&#;ll gain the flexibility of manual labor with the speed of robotics. If you have fluctuating demand or varied product types, it&#;s recommended that you choose hybrid palletizing.

Cobot Systems: The Bridge Between Manual and Robotic Palletizing

Collaborative robots (cobots) provide you with a more flexible and accessible automation solution. These systems have a smaller footprint, which should make it easier for you to integrate them into your existing operations. They can handle lighter loads as well as more standardized products. You also don&#;t need specialized programming for this type of automation.

Manual vs Robotic Palletizer: Which One Should You Choose?

All palletizer types have their pros and cons, which you should weigh before making your final decision.

When to Choose Manual Palletizing: While it has its drawbacks, manual palletizing is the best choice for small businesses or low-volume operations. If you don&#;t have much space or budget to work with, you should use manual palletizing. The same is true if your operations involve varied product types that require more flexibility.

When to Choose Robotic Palletizing: Robotic palletizing is ideal for high-volume operations with more consistent product types. If your business is looking to reduce labor costs and enhance safety, you&#;ll benefit from this type of palletizing. It&#;s also suitable for operations that have enough budget and space to accommodate automation.

When to Choose Hybrid or Cobot Palletizing: If you own a mid-sized business that&#;s looking for a balance between automation and flexibility, cobot palletizing is the right option for you. It allows you to benefit from automation without needing to pay the high upfront costs.

Conclusion

Whether you choose manual or robotic palletizing for your warehouse, you should be able to bolster your logistics and improve your supply chain management. Manual palletizing may be the best option if you have a smaller warehouse or more varied products. Robotic palletizing is ideal for high-volume warehouses or distribution centers that need to load pallets quickly. Assess your company&#;s needs regarding volume, cost, and scalability before choosing. Carefully evaluate the specific requirements of each type of palletizer to make an informed decision.

Palletizer Technology Over Time

The first conventional palletizer was developed in the late s as an alternative to manual loading heavy products onto shipping pallets. Conventional palletizers experienced rapid improvement over the next several decades, with both row-forming and inline palletizing developing between and .

By the development of inline palletizing in the s, the demands for palletizer performance had greatly increased with growing performance demands. Automatic palletizing systems not only had to pack products in an organized and consistent manner, but they also had to do so at rapid speeds.

While conventional palletizers remained useful for high-speed and repetitive loading operations, robotic palletizing systems developed in the s and s offer more specialized capabilities; where loading delicate or flexible product (such as bags) was once difficult to perform with conventional palletizers, robotic palletizing systems could now do the job with relative precision.

Today, packaging facilities utilize either conventional or robotic palletizing systems depending on their specific needs. One type is not necessarily better than the other; different solutions are better suited for different products.

Comparing Conventional and Robotic Palletizing

Conventional and robotic palletizing systems have unique advantages and disadvantages. This section covers some of the most important of these factors, which are crucial to consider when choosing between types.

Speed

Increasing speed and reliability has always been the goal in palletizer technology. As palletizers become better equipped at handling more variable tasks, both conventional and robotic palletizing systems are now capable of handling most load building requirements.

Conventional palletizers generally hold a speed advantage over robotic palletizing systems. Where robotic palletizing systems excel in flexible and precise movements, conventional palletizers excel in repeatedly executing palletizing with rapid efficiency.

As a result, while conventional palletizers are challenged by delicate or bagged product than robotic palletizing systems, high-volume packaging facilities with consistent palletizing patterns will ultimately benefit from the increased speed of conventional palletizers.

Pattern Complexity

While robotic palletizing systems are adept at stacking individual units in various ways, they can present drawbacks when handling variations between cases. If, for example, complex patterns are necessary for multiple cases, the packaging process will need to account for these changes in some way.

Product Types

Bags, pails, and other &#;difficult&#; shapes present specific challenges for different palletizers. Conventional palletizers perform best with consistently shaped and sized packages, an assumption which allows them to perform with maximum speed and efficiency.

However, flexible or nonrigid packages are often difficult for conventional palletizers to handle without utilizing some form of additional reinforcement. Robotic palletizing systems, by contrast, can carefully and individually handle almost any type of package.

As a result, robotic palletizing systems are best suited for difficult-to-handle packaging types, while higher speed conventional palletizers are ideal for packaging types with uniform shapes.

Floor Space

Floor space is a valuable commodity in packaging facilities. As such, palletizers of any type should provide the best possible ratio of space to performance.

Conventional palletizers are typically smaller than their robotic counterparts. Robotic palletizers achieve functionality by using a 240 degree arc of the robotic arm. Such functionality includes placing the pallet, picking the product, and placing the pallet on the discharge conveyor. Conventional palletizers achieve all these functions in contained unit which requires less overall floor space.

A conventional palletizer is capable of concurrent stretch wrapping which takes place within the contained unit thereby eliminating the significant space required for a separate stretch wrapper. An integrated pallet dispenser and a sheet dispenser also require less floor space.

Safety

Conventional palletizers can achieve the highest possible safety rating using controlled entry access protection. Robotic palletizers use a variety of safety cage enclosures which are not necessarily integrated with the operation of the robot.

Infeed

Both conventional and robotic palletizers are compatible with upper level and lower floor level infeed. Conventional palletizers achieve the highest possible speed with upper level infeed. Robotic palletizers are typically installed at the lower level and require an additional conveyor to deliver the product from an upper level to the floor level.

Hybrid Robotic Palletizers

An alternative solution is a hybrid robotic palletizer. A robotic armature is integrated into a controlled entry conventional frame. This configuration achieves the space saving, safety, and concurrent stretch wrapping features of a conventional palletizer for handling bags and delicate product.