Chapter 47: Case Packing |
1. Introduction and Chapter Summary |
Case packing is the stage in a packaging line where individual products, already primary-packed or grouped, are loaded into corrugated shipping cases. In food and pharmaceutical applications, case packing must be fast, gentle, sanitary, and highly reliable. It often sits at the end of a line where product changeovers are frequent and where traceability matters. |
This chapter focuses on one of the most capable tools for modern case packing: the extended-reach delta robot. Delta robots are parallel-link robots known for very high speed and precision. Standard delta robots have a modest working envelope, typically a few hundred millimeters across. Extended-reach delta robots increase the horizontal reach to as much as 1600 mm, allowing them to span wide conveyors, pick from multiple lanes, and place products into tall boxes without moving the base. That combination is what makes them especially useful in food and pharmaceutical case packing, where lines are often wide, products are delicate, and cases can be deep. |
The chapter explains how extended-reach delta robots work in principle, how they are integrated into case packing cells, and how they are used across many industries. It gives numerous real-world application examples from food, beverage, pharmaceutical, and consumer goods manufacturing. It also covers grippers, vision, sanitation, changeover, safety, and maintenance. The emphasis throughout is on practical understanding rather than engineering math. No formulas or tables are used. The goal is to help a technical reader who is new to the topic understand what these robots do, why they are chosen, and what to consider when applying them. |
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2. What Case Packing Is and Why It Matters |
Case packing is the bridge between product manufacturing and distribution. Upstream, products may be bottles, cans, pouches, jars, blister packs, vials, syringes, or cartons. Downstream, cases are palletized and shipped. If case packing is slow or unreliable, the entire line backs up. If it is too rough, products break or leak. If it is not flexible, changeovers become expensive and slow. |
In food and pharmaceutical production, case packing has additional demands. Food lines must be washdown-capable and must avoid areas where bacteria can hide. Pharmaceutical lines must protect product integrity, avoid cross-contamination, and often maintain serialization or track-and-trace data. Both sectors face labor shortages and rising throughput targets. Robots help address these pressures, but not all robots fit all case packing tasks. |
Traditional case packing methods include manual packing, pick-and-place mechanisms, and Cartesian or articulated robots. Manual packing is flexible but slow and ergonomically risky. Hard automation is fast but inflexible. Articulated robots are flexible but often slower for light, high-speed picks and can have larger footprints. Delta robots fill a specific niche: very high speed for small to medium payloads in a defined workspace. Extended-reach delta robots widen that niche to include case packing across wide conveyors and into tall cases. |
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3. Delta Robot Basics for the Non-Specialist |
A delta robot has a fixed base and three or four lightweight arms arranged in a triangle or similar pattern. Each arm is driven by a motor at the base. The arms connect to a small moving platform, often called the tool plate or end effector. Because the arms are parallel, the platform stays level and moves in three dimensions with very little inertia. This design allows extremely fast accelerations and decelerations. |
Standard delta robots are excellent at picking small items from a narrow conveyor and placing them into trays, cups, or small boxes. Their reach is limited, often 400 to 800 mm horizontally. Extended-reach delta robots use longer arms and sometimes a different linkage geometry to achieve horizontal reach up to about 1600 mm. That reach lets one robot cover a conveyor that is two or three times wider than a standard delta could handle. It also lets the robot place products into a tall case by reaching down into the case rather than requiring the case to be raised. |
The trade-off is that longer arms can reduce maximum speed slightly and can reduce payload capacity. However, for many food and pharmaceutical products, payloads are light, often under 2 kg, so the trade-off is acceptable. The benefit is fewer robots, simpler conveyor layouts, and the ability to pack into tall cases without complex case-lifting mechanisms. |
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4. Why Extended Reach Matters in Case Packing |
Case packing often involves wide product flows. For example, a bakery line may produce rows of bread loaves across a 1200 mm wide conveyor. A pharmaceutical line may have multiple lanes of blister packs or vials. A standard delta robot mounted above the center of a wide conveyor may not be able to reach the outer lanes. One solution is to use multiple standard delta robots, but that increases cost, control complexity, and floor space. Another solution is to use a gantry or a linear axis to move the robot across the conveyor, but that adds moving mass and maintenance. |
An extended-reach delta robot with 1600 mm horizontal reach can cover the full width of a wide conveyor from a single base. It can pick from the far left lane, the center, and the far right lane without moving its base. This reduces the number of robots, simplifies the frame, and improves reliability because there are fewer motors and cables. |
Tall boxes are another challenge. In many case packing applications, the case is deeper than a standard delta robot can reach. If the robot cannot reach into the case, the case must be lifted to the robot, or the robot must be mounted on a lift axis. Both add complexity. An extended-reach delta robot can often reach the bottom of a tall case directly, especially if the case is presented at a slight angle or if the robot is mounted at a height that allows a downward reach. This makes the packing cell simpler and faster. |
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5. How an Extended-Reach Delta Case Packing Cell Is Built |
A typical case packing cell with an extended-reach delta robot includes several subsystems. Understanding these subsystems helps explain the application examples later. |
5.1 Robot and Controller |
The robot itself includes the base, arms, tool plate, and motors. The controller coordinates motion, handles input and output signals, and often includes a vision interface. Modern controllers support high-level programming, simulation, and integration with line control systems. |
5.2 Frame and Mounting |
The robot is usually mounted above the conveyor on a sturdy frame. The frame must be rigid enough to prevent vibration, because delta robots move very fast. The frame also provides mounting points for cameras, lights, and safety guards. |
5.3 Product Infeed |
Products arrive on a conveyor, often in one or more lanes. They may be randomly oriented or aligned. Vision systems or mechanical guides present them to the robot in a known position. In some cases, products are grouped upstream and arrive as a pre-formed pack. |
5.4 Case Handling |
Cases are erected, presented to the packing area, and then transferred to closing and sealing. Cases may be indexed by a conveyor, a rotary table, or a walking beam. The robot places products into the case according to a packing pattern. The case may be stationary during packing or moving continuously, depending on the robot's tracking capability. |
5.5 Grippers and End Effectors |
The gripper is critical. It must pick products without damaging them and release them without disturbing the packing pattern. Common grippers include vacuum cups, mechanical fingers, soft grippers, and magnetic grippers. Food applications often use food-grade vacuum cups or soft silicone fingers. Pharmaceutical applications may use static-dissipative materials and cleanroom-compatible designs. |
5.6 Vision and Sensing |
Vision systems help the robot locate products on the conveyor, verify product orientation, and check for missing or defective items. Some systems use 2D vision; others use 3D vision for randomly oriented products. Sensors also confirm that the case is present and that the product has been placed correctly. |
5.7 Safety and Guarding |
Delta robots move fast and can be dangerous. Safety fences, light curtains, and interlocked doors are common. Some applications use collaborative robot principles, but true high-speed delta robots are usually kept behind guards. Risk assessment is required. |
5.8 Sanitation and Washdown |
In food and pharmaceutical applications, the cell must be cleanable. Stainless steel frames, IP-rated motors, washdown-capable conveyors, and hygienic grippers are common. The robot itself may be designed for washdown or may be enclosed in a washdown shroud. |
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6. Food Industry Applications |
The food industry is the largest user of extended-reach delta robots for case packing. Products are often light, delicate, and produced at high speed. Changeovers are frequent because food brands offer many package sizes and flavors. The following examples show the range of applications. |
6.1 Bakery and Bread |
A commercial bakery produces loaves of bread, buns, and rolls. The loaves come out of the oven and are cooled, sliced, and bagged. The bagged loaves then need to be packed into shipping cases. The conveyor is wide, often 1200 to 1500 mm, because the bakery runs multiple lanes. An extended-reach delta robot with 1600 mm reach is mounted above the conveyor. It picks bagged loaves from the outer lanes and places them into tall corrugated cases. The robot uses soft vacuum cups that grip the plastic bag without tearing it. Because the robot can reach the full conveyor width, one robot replaces two or three standard delta robots. The bakery can switch from large loaves to small rolls by changing the gripper and the packing pattern in software. This reduces changeover time and increases line utilization. |
6.2 Snack Foods |
A snack food plant produces potato chips, tortilla chips, and pretzels in bags. The bags are lightweight and irregularly shaped. They arrive on a wide conveyor after weighing and bagging. The bags must be packed into cases without crushing the chips. An extended-reach delta robot with a soft gripper picks the bags and places them into a tall case. The robot uses vision to locate each bag and determine its orientation. It places the bags in a shingled or stacked pattern to maximize case fill and minimize breakage. Because the robot can reach into a tall case, the case does not need to be lifted. The system runs at high speed, often 100 to 150 picks per minute. The food plant benefits from reduced product giveaway and fewer rejected cases. |
6.3 Confectionery |
A confectionery factory produces chocolate bars, candies, and gummies. The products are often wrapped in flow wrap or foil. They are light and can be sticky. An extended-reach delta robot picks the wrapped products from a wide conveyor and packs them into display cases or shipping cases. For chocolate, the robot may work in a temperature-controlled area to prevent melting. The gripper may use vacuum cups with a special coating to prevent sticking. The robot can pack multiple layers into a tall case by reaching down and placing each layer. This is faster and gentler than a drop packer, which can damage fragile chocolate. |
6.4 Produce and Fresh Foods |
Fresh produce such as apples, oranges, tomatoes, and peppers is packed into cases for retail and food service. These products are delicate and vary in size. An extended-reach delta robot with a soft gripper can pick individual items from a wide conveyor and place them into a case. Vision systems measure size and color, allowing the robot to sort and pack according to grade. For example, a robot may pack large apples into one case and small apples into another. The robot can also pack trays or punnets into cases. Because the robot can reach across a wide conveyor, it can handle multiple lanes of produce at once. This reduces labor and improves consistency. |
6.5 Frozen Foods |
Frozen foods such as frozen vegetables, french fries, and prepared meals are packed into cases at low temperatures. The robot must be rated for cold environments and must use lubricants that do not freeze. An extended-reach delta robot can pick frozen bags or cartons from a wide conveyor and pack them into tall cases. The robot may be enclosed in a cold-room-rated enclosure. The system often runs continuously with minimal maintenance. The benefit is reduced labor in a cold environment, which is difficult for human workers. |
6.6 Dairy Products |
Dairy plants produce yogurt cups, cheese wedges, butter sticks, and milk cartons. These products are often packed in multi-packs or trays before case packing. An extended-reach delta robot can pick the multi-packs from a wide conveyor and place them into cases. For yogurt, the robot may use vacuum cups that grip the top of the cup without crushing it. For cheese, the robot may use soft fingers. The robot can pack cases in multiple layers, reaching into tall cases. Dairy lines often run at high speed, and the robot helps maintain throughput during peak demand. |
6.7 Meat, Poultry, and Seafood |
Meat, poultry, and seafood products are often packed in trays or vacuum-sealed bags. These products can be heavy and irregular. An extended-reach delta robot with a suitable gripper can pick the trays or bags from a wide conveyor and place them into cases. The robot must be washdown-capable because of sanitation requirements. Stainless steel construction and IP-rated components are common. The robot may also use vision to check for correct product placement and to avoid packing defective items. The benefit is reduced labor in a cold, wet environment and improved food safety. |
6.8 Pet Food |
Pet food is a growing market. Dry kibble, wet food pouches, and treats are packed into cases. An extended-reach delta robot can pick pouches or small bags from a wide conveyor and pack them into tall cases. The robot may use a combination of vacuum and mechanical grippers. The system often runs at high speed and must handle frequent changeovers between product sizes. The robot's software allows quick pattern changes, which is important for pet food brands with many SKUs. |
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7. Pharmaceutical and Healthcare Applications |
Pharmaceutical and healthcare case packing is different from food. Products are often high-value, small, and regulated. Cleanliness, traceability, and accuracy are critical. Extended-reach delta robots are used in several ways. |
7.1 Blister Packs and Cartons |
A pharmaceutical line produces blister packs of tablets or capsules. The blister packs are cartoned, then the cartons are packed into shipping cases. An extended-reach delta robot picks the cartons from a wide conveyor and places them into a tall case. The robot may use vacuum cups or mechanical grippers. Vision systems verify that each carton is present and correctly oriented. The robot can also read codes on the cartons and associate them with the case for traceability. This is important for serialization regulations. |
7.2 Vials and Syringes |
Vials and syringes are fragile and must be handled carefully. They often arrive in nests or trays. An extended-reach delta robot can pick the trays from a wide conveyor and place them into cases. Alternatively, the robot can pick individual vials or syringes with a specialized gripper. The robot must be cleanroom-compatible, with smooth surfaces and no particle-generating materials. Stainless steel and anodized aluminum are common. The robot may operate in an isolator or a cleanroom with positive pressure. The benefit is reduced human contact, which lowers contamination risk. |
7.3 Medical Devices |
Medical devices such as catheters, syringes, and diagnostic kits are packed into cases. These products are often in sterile packaging. An extended-reach delta robot can pick the sterile packages from a wide conveyor and place them into cases. The robot may use a vacuum gripper that does not compromise the sterile barrier. The system may include vision to check for package integrity. The robot can also pack cases in multiple layers, reaching into tall cases. The benefit is consistent handling and reduced risk of human error. |
7.4 Nutraceuticals and Supplements |
Nutraceuticals and supplements are often packaged in bottles, jars, or pouches. An extended-reach delta robot can pick the bottles from a wide conveyor and pack them into cases. The robot may use a gripper that grips the bottle body or the cap. Vision systems check for correct labeling and fill level. The robot can pack cases in multiple layers. The system must be washdown-capable if the product is a powder. The benefit is high speed and flexibility for many SKUs. |
7.5 Clinical Diagnostics and Laboratory Products |
Clinical diagnostics products include test tubes, reagent bottles, and microplates. These are often small and delicate. An extended-reach delta robot can pick them from a wide conveyor and place them into cases or shipping boxes. The robot may use a soft gripper or vacuum cups. The system may include barcode scanning for traceability. The robot can operate in a cleanroom or a laboratory environment. The benefit is precise, repeatable handling. |
7.6 Over-the-Counter Medicines |
Over-the-counter medicines such as pain relievers, cold remedies, and vitamins are packed in bottles, blister packs, and cartons. An extended-reach delta robot can pick these items from a wide conveyor and pack them into cases. The robot may use a combination of vacuum and mechanical grippers. Vision systems verify product presence and orientation. The robot can pack cases in multiple layers. The system is designed for high speed and quick changeover. The benefit is reduced labor and improved accuracy. |
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8. Beverage Industry Applications |
The beverage industry uses case packing for bottles, cans, and cartons. Products are often heavy and move at high speed. Extended-reach delta robots are used for lighter products and for secondary packing. |
8.1 Bottled Water and Soft Drinks |
Bottled water and soft drinks are often packed in shrink-wrap or trays before case packing. An extended-reach delta robot can pick the trays or multi-packs from a wide conveyor and place them into cases. The robot may use a heavy-duty gripper with mechanical fingers. The system must handle high speeds and heavy payloads. The robot may be mounted on a sturdy frame above the conveyor. The benefit is reduced labor and improved consistency. |
8.2 Cans and Cans in Sleeves |
Cans are often packed in sleeves or trays. An extended-reach delta robot can pick the sleeves from a wide conveyor and place them into cases. The robot may use a magnetic gripper if the cans are steel, or a vacuum gripper if the cans are aluminum. The system must handle high speeds. The robot can pack cases in multiple layers. The benefit is high throughput and gentle handling. |
8.3 Juice and Dairy Beverages |
Juice and dairy beverages are often packed in cartons or bottles. An extended-reach delta robot can pick the cartons or bottles from a wide conveyor and place them into cases. The robot may use a vacuum gripper or a mechanical gripper. The system must be washdown-capable. The robot can pack cases in multiple layers. The benefit is reduced labor and improved food safety. |
8.4 Craft Breweries and Distilleries |
Craft breweries and distilleries often have smaller lines with many SKUs. An extended-reach delta robot can pick bottles or cans from a wide conveyor and pack them into cases. The robot may use a vacuum gripper or a mechanical gripper. The system must be flexible for frequent changeovers. The robot's software allows quick pattern changes. The benefit is reduced labor and improved flexibility. |
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9. Consumer Goods and Other Applications |
Beyond food and pharmaceuticals, extended-reach delta robots are used in consumer goods, electronics, and other industries. These examples show the versatility of the technology. |
9.1 Cosmetics and Personal Care |
Cosmetics and personal care products such as bottles, jars, and tubes are packed into cases. An extended-reach delta robot can pick the products from a wide conveyor and place them into cases. The robot may use a vacuum gripper or a soft gripper. Vision systems check for correct labeling and orientation. The system must be cleanable. The benefit is high speed and gentle handling. |
9.2 Household Chemicals |
Household chemicals such as detergents, cleaners, and air fresheners are packed into cases. An extended-reach delta robot can pick bottles or pouches from a wide conveyor and place them into cases. The robot may use a mechanical gripper or a vacuum gripper. The system must be corrosion-resistant. The benefit is reduced labor and improved safety. |
9.3 Electronics and Small Parts |
Electronics and small parts are often packed in trays or bags before case packing. An extended-reach delta robot can pick the trays or bags from a wide conveyor and place them into cases. The robot may use a vacuum gripper or a mechanical gripper. The system may include static control. The benefit is high speed and precision. |
9.4 E-Commerce and Order Fulfillment |
E-commerce and order fulfillment centers use case packing for shipping boxes. An extended-reach delta robot can pick items from a wide conveyor and place them into boxes. The robot may use a vacuum gripper or a mechanical gripper. Vision systems identify items and determine the best packing pattern. The system must be flexible for many product types. The benefit is high speed and reduced labor. |
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10. Gripper Selection for Case Packing |
The gripper is often the most application-specific part of the system. The following examples show how gripper choice affects success. |
10.1 Vacuum Cups |
Vacuum cups are common for bags, cartons, and smooth-surfaced products. They are fast and gentle. However, they may not work well for porous or irregular products. Food applications use food-grade vacuum cups that can be cleaned. Pharmaceutical applications use cleanroom-compatible vacuum cups. |
10.2 Soft Grippers |
Soft grippers use flexible silicone or rubber fingers. They are good for delicate produce, bakery items, and irregular shapes. They can conform to the product without crushing it. They are often used in food applications where product damage is a concern. |
10.3 Mechanical Fingers |
Mechanical fingers are good for bottles, cans, and rigid products. They can be designed for specific shapes. They are often used in beverage and consumer goods applications. They may be slower than vacuum grippers but can handle heavier payloads. |
10.4 Magnetic Grippers |
Magnetic grippers are used for steel cans and other magnetic products. They are fast and reliable. They are not suitable for non-magnetic products. |
10.5 Combination Grippers |
Some applications require a combination of vacuum and mechanical gripping. For example, a gripper may use vacuum to pick a bag and mechanical fingers to support it during high-speed motion. Combination grippers are more complex but can handle a wider range of products. |
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11. Vision and Sensing in Case Packing |
Vision and sensing are essential for many case packing applications. They help the robot locate products, verify orientation, and check for defects. |
11.1 2D Vision |
2D vision is used for products that are flat and consistently oriented. It can locate products on a conveyor and determine their position and rotation. It is fast and relatively inexpensive. |
11.2 3D Vision |
3D vision is used for products that are randomly oriented or that vary in height. It can determine the position and orientation of each product in three dimensions. It is more expensive but more flexible. |
11.3 Barcode and QR Code Scanning |
Barcode and QR code scanning is used for traceability. The robot can read codes on products or cases and associate them with production data. This is important in pharmaceutical applications. |
11.4 Sensors |
Sensors confirm that the case is present, that the product has been placed, and that the gripper has released the product. They help prevent errors and downtime. |
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12. Changeover and Flexibility |
Food and pharmaceutical lines often run many SKUs. Changeover speed is critical. Extended-reach delta robots offer several advantages. |
12.1 Software-Based Changeover |
Packing patterns are stored in software. Changing from one product to another can be as simple as selecting a new program. This reduces downtime and eliminates mechanical adjustments. |
12.2 Quick-Change Grippers |
Grippers can be designed for quick change. A single robot can use different grippers for different products. Quick-change couplings allow the gripper to be swapped in minutes. |
12.3 Adjustable Conveyors |
Conveyors can be adjusted for different product widths. This allows the same cell to handle multiple products. |
12.4 Modular Frames |
Modular frames allow the robot to be repositioned or the cell to be expanded. This provides flexibility for future product changes. |
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13. Sanitation and Cleanroom Considerations |
Sanitation and cleanroom requirements vary by industry. Food applications often require washdown. Pharmaceutical applications often require cleanroom. |
13.1 Washdown |
Washdown robots are designed with smooth surfaces, no crevices, and IP-rated motors. They can be cleaned with water and chemicals. Stainless steel is common. The robot may be mounted on a frame that can be cleaned. |
13.2 Cleanroom |
Cleanroom robots are designed to minimize particle generation. They use special lubricants, sealed bearings, and smooth surfaces. They may be made of anodized aluminum or stainless steel. The robot may operate in an isolator or a cleanroom with positive pressure. |
13.3 Hygienic Design |
Hygienic design goes beyond washdown. It includes preventing product accumulation, ensuring drainage, and allowing inspection. The robot and frame should be designed so that food or pharmaceutical product cannot become trapped. |
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14. Safety and Risk Assessment |
Safety is a critical part of any robot installation. Extended-reach delta robots move fast and can cause injury. |
14.1 Guarding |
Guarding is the primary safety measure. Fences, light curtains, and interlocked doors keep people away from the robot. The guarding must be designed to prevent access during operation. |
14.2 Risk Assessment |
A risk assessment identifies potential hazards and defines mitigation measures. It considers the robot, the gripper, the conveyor, and the product. It also considers human interaction during maintenance and changeover. |
14.3 Safety-Rated Controls |
Safety-rated controls ensure that the robot stops safely when a guard is opened. They also ensure that the robot cannot restart unexpectedly. |
14.4 Training |
Operators and maintenance personnel must be trained on safe operation and maintenance. Training should include lockout/tagout procedures. |
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15. Maintenance and Reliability |
Extended-reach delta robots are reliable, but they require maintenance. |
15.1 Preventive Maintenance |
Preventive maintenance includes checking belts, bearings, and motors. It also includes cleaning and inspecting grippers and vision systems. |
15.2 Spare Parts |
Spare parts should be kept on hand for critical components. This reduces downtime when a part fails. |
15.3 Remote Diagnostics |
Many robot controllers support remote diagnostics. This allows technicians to troubleshoot problems without being on site. |
15.4 Reliability Data |
Reliability data helps predict when maintenance is needed. It also helps identify recurring problems. |
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16. Economic and Operational Benefits |
Extended-reach delta robots offer several economic and operational benefits. |
16.1 Labor Reduction |
Robots reduce the need for manual labor. This is important in food and pharmaceutical plants where labor is scarce and expensive. |
16.2 Throughput Increase |
Robots can run at high speeds without fatigue. This increases throughput and reduces bottlenecks. |
16.3 Quality Improvement |
Robots are consistent. They place products correctly every time. This reduces errors and improves quality. |
16.4 Flexibility |
Robots can be reprogrammed for different products. This reduces changeover time and increases line utilization. |
16.5 Safety Improvement |
Robots can handle repetitive tasks that cause ergonomic injuries. This improves worker safety. |
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17. Limitations and Challenges |
Extended-reach delta robots are not suitable for all case packing tasks. |
17.1 Payload Limits |
Extended-reach delta robots have lower payload capacity than articulated robots. They are best for light products. |
17.2 Reach Limits |
Even extended-reach delta robots have limits. Very wide conveyors or very tall cases may require multiple robots or other solutions. |
17.3 Speed Trade-Offs |
Longer arms can reduce maximum speed. This may be acceptable for many applications but not all. |
17.4 Integration Complexity |
Integrating a robot into a case packing line requires careful design. Vision, grippers, conveyors, and controls must all work together. |
17.5 Cost |
The initial cost of a robot cell can be high. However, the payback is often short due to labor savings and throughput increases. |
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18. Application Selection Guide |
The following questions help determine if an extended-reach delta robot is right for a case packing application. |
18.1 Product Weight |
Is the product lightweight, typically under 2 kgIf yes, a delta robot may be suitable. |
18.2 Product Size and Shape |
Is the product small enough to be picked by a gripperIs it delicateIf yes, a delta robot with a soft gripper may be suitable. |
18.3 Conveyor Width |
Is the conveyor wider than a standard delta robot can reachIf yes, an extended-reach delta robot may be suitable. |
18.4 Case Depth |
Is the case deeper than a standard delta robot can reachIf yes, an extended-reach delta robot may be suitable. |
18.5 Speed Requirement |
Is the required speed high, typically over 60 picks per minuteIf yes, a delta robot may be suitable. |
18.6 Changeover Frequency |
Are there many SKUsIf yes, a delta robot with software-based changeover may be suitable. |
18.7 Sanitation Requirement |
Does the application require washdown or cleanroomIf yes, a suitable robot model must be selected. |
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19. Case Studies from Real Production Lines |
The following case studies illustrate how extended-reach delta robots are used in real production lines. They are based on typical applications in food and pharmaceutical manufacturing. |
19.1 Case Study: Bakery Bread Packing |
A large bakery produces 20,000 loaves per hour. The loaves are bagged and conveyed on a 1400 mm wide conveyor. The bakery needs to pack the loaves into tall cases. A standard delta robot cannot reach the outer lanes or the bottom of the case. The bakery installs an extended-reach delta robot with 1600 mm reach. The robot picks bagged loaves from all lanes and places them into cases. The robot uses soft vacuum cups that grip the bag without tearing it. The system runs at 120 picks per minute. The bakery reduces labor by 4 people per shift and increases line throughput by 15 percent. |
19.2 Case Study: Pharmaceutical Blister Pack Cartoning |
A pharmaceutical plant produces blister packs of tablets. The blister packs are cartoned and then packed into shipping cases. The plant needs to pack 200 cartons per minute into tall cases. A standard delta robot cannot reach the bottom of the case. The plant installs an extended-reach delta robot with 1600 mm reach. The robot picks cartons from a wide conveyor and places them into cases. The robot uses vacuum cups and vision to verify orientation. The system also scans barcodes for traceability. The plant reduces labor by 3 people per shift and improves traceability. |
19.3 Case Study: Produce Packing |
A produce company packs apples into cases. The apples arrive on a 1200 mm wide conveyor. The company needs to pack apples into cases by size and grade. An extended-reach delta robot with a soft gripper picks apples from the conveyor. Vision measures size and color. The robot places apples into the correct case. The system runs at 100 picks per minute. The company reduces labor by 5 people per shift and improves packing consistency. |
19.4 Case Study: Frozen Food Packing |
A frozen food plant packs frozen vegetables into cases. The plant needs to pack 150 bags per minute into tall cases. The plant installs an extended-reach delta robot in a cold-room-rated enclosure. The robot picks bags from a wide conveyor and places them into cases. The robot uses vacuum cups and vision. The system runs continuously with minimal maintenance. The plant reduces labor by 4 people per shift and improves food safety. |
19.5 Case Study: Beverage Can Packing |
A beverage plant packs cans into cases. The cans arrive in sleeves on a wide conveyor. The plant installs an extended-reach delta robot with a magnetic gripper. The robot picks sleeves from the conveyor and places them into cases. The system runs at 100 picks per minute. The plant reduces labor by 3 people per shift and improves throughput. |
19.6 Case Study: Cosmetics Packing |
A cosmetics company packs bottles of lotion into cases. The bottles arrive on a wide conveyor. The company installs an extended-reach delta robot with a vacuum gripper. The robot picks bottles from the conveyor and places them into cases. Vision verifies labeling and orientation. The system runs at 80 picks per minute. The company reduces labor by 2 people per shift and improves quality. |
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20. Future Trends |
The future of case packing with extended-reach delta robots is likely to include several trends. |
20.1 Higher Payloads |
New materials and designs may increase payload capacity. This would allow delta robots to handle heavier products. |
20.2 Longer Reach |
New designs may increase reach beyond 1600 mm. This would allow even wider conveyors and taller cases. |
20.3 Better Vision |
Advances in vision and artificial intelligence will make robots better at handling random products. This will reduce the need for mechanical orientation. |
20.4 Collaborative Operation |
Some applications may use collaborative delta robots that can work safely alongside humans. This would allow flexible changeover and maintenance. |
20.5 Integrated Sanitation |
New designs may integrate sanitation features such as self-cleaning grippers and frames. This would reduce downtime for cleaning. |
20.6 Digital Twins |
Digital twins will allow engineers to simulate and optimize case packing cells before installation. This will reduce commissioning time and improve performance. |
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21. Detailed Summary |
This chapter has explained how extended-reach delta robots with 1600 mm horizontal reach are used in case packing for food and pharmaceutical applications. It began with a summary and then defined case packing and its importance. It explained delta robot basics and why extended reach matters for wide conveyors and tall cases. It described how a case packing cell is built, including the robot, frame, infeed, case handling, grippers, vision, safety, and sanitation. |
The chapter then presented numerous application examples. In food, these included bakery and bread, snack foods, confectionery, produce, frozen foods, dairy, meat and poultry, seafood, and pet food. In pharmaceuticals, these included blister packs and cartons, vials and syringes, medical devices, nutraceuticals, clinical diagnostics, and over-the-counter medicines. In beverages, these included bottled water and soft drinks, cans, juice and dairy beverages, and craft breweries. In consumer goods, these included cosmetics, household chemicals, electronics, and e-commerce. |
The chapter discussed gripper selection, including vacuum cups, soft grippers, mechanical fingers, magnetic grippers, and combination grippers. It covered vision and sensing, including 2D vision, 3D vision, barcode scanning, and sensors. It explained changeover and flexibility, sanitation and cleanroom considerations, safety and risk assessment, and maintenance and reliability. It outlined economic and operational benefits, limitations and challenges, and an application selection guide. It presented real production case studies and future trends. |
The key message is that extended-reach delta robots are a powerful solution for case packing when products are light, conveyors are wide, and cases are tall. They offer high speed, flexibility, and reliability. They are not suitable for every application, but when they fit, they can transform a packaging line. As food and pharmaceutical manufacturers face labor shortages, rising throughput targets, and increasing SKU complexity, extended-reach delta robots will continue to play a growing role in case packing. |
cs@easiersoft.com