In any industrial process, the quality of the finished product does not depend solely on correct manufacturing. It is also essential to have systems capable of verifying, in real time, that each unit meets the established standards before proceeding to the subsequent stages of the process.
In sectors such as the food industry, where production lines can process tens of thousands of units per hour, exclusively manual inspection is insufficient to guarantee continuous, objective and reliable control.
Automation has transformed this stage through the incorporation of technologies such as machine vision, industrial sensors, electronic rejectors and synchronised conveying systems. By integrating these technologies, it is possible to inspect the entire production output, detect anomalies and automatically remove defective units without reducing the manufacturing rate.
However, an automated quality control system is not limited to detecting a defect. For the process to operate correctly, the product must arrive at the inspection area in the correct orientation, maintain constant spacing, move steadily and be removed or diverted at precisely the right moment when a non-conformity is identified.
At IFAMAC, we develop solutions that enable all these stages to be integrated into a single line, combining positioning, conveying, inspection, sorting and rejection systems adapted to the actual requirements of each industrial process.
Effective quality control begins before inspection
One of the most common mistakes is to assume that quality control begins when a camera or sensor analyses the product. In reality, inspection reliability depends largely on how each unit arrives at the inspection point.
If products move out of alignment, too close together or in different orientations, incorrect readings, false rejections or difficulties in identifying certain defects may occur.
For this reason, quality control automation begins several metres before the inspection system. Product conveying, separation and positioning must be properly coordinated to ensure that each unit can be analysed under repeatable conditions.
Product positioners: the basis for reliable inspection
Before a camera can correctly analyse a container, tray or any other product, all units must maintain a consistent orientation and suitable spacing.
Product positioners on conveyor belts automatically reorganise the flow so that each unit reaches the inspection point in the required position.
These systems can combine conveyors, guiding elements, sensors and servo-driven mechanisms to progressively correct the product trajectory without having to stop the line.
Their integration makes it possible to:
- Correctly align each unit before inspection.
- Maintain consistent spacing between products.
- Facilitate the operation of cameras, sensors and readers.
- Reduce errors caused by incorrect orientation.
- Improve the repeatability of automated processes.
This type of solution is particularly useful in food, packaging and automated handling lines, where the position of the product affects the subsequent operation of vision, labelling, robotic picking or rejection systems.
Intelligent conveyors: synchronisation and flow stability
The conveyor is not merely the means used to move the product. In an automated quality control line, it plays an active role in the inspection process.
Hinged conveyors can transport jars, containers and other individual products while maintaining a stable path and a speed synchronised with the equipment installed on the line.
Their modular design makes it possible to create layouts with curves, branches, accumulation areas and transfer points. This allows different workstations to be integrated without compromising product continuity.
The following equipment can be installed on these conveyors:
- Machine vision cameras.
- Sensors for detecting the presence or absence of components.
- Code readers and traceability systems.
- Dynamic weighing systems.
- Labelling equipment.
- Automatic rejection or diversion systems.
A stable speed and suitable spacing between units provide inspection systems with the time and space required to analyse each product and respond accurately when an issue is detected.
Machine vision: continuous and objective inspection
Machine vision has become one of the most important technologies in industrial quality control. Using high-resolution cameras and image-processing systems, it can automatically inspect every product travelling along the line.
Depending on the application, these systems can verify aspects such as:
- Product dimensions and geometry.
- Colour and surface finish.
- Position and orientation.
- Container integrity.
- Presence or absence of components.
- Correct label placement.
- Printing of dates, batch numbers or codes.
Unlike manual visual inspection, machine vision applies the same criteria throughout the working day. This reduces subjectivity, improves inspection repeatability and enables defects that are difficult to identify with the naked eye to be detected.
In addition, the data obtained can be stored to analyse trends, study the frequency of each defect and detect potential deviations in earlier stages of the production process.
Electronic rejectors: removing defective products without stopping the line
Detecting an anomaly is only the first part of quality control. The system must also remove the affected unit accurately and without disrupting the flow of the remaining production.
IFAMAC’s high-speed electronic rejector is designed to be integrated downstream of machine vision cameras, presence sensors or any other inspection equipment.
When the control system detects a non-conforming product, it records its position and synchronises the rejector mechanism with the conveyor speed. In this way, only the identified unit is diverted, even when products arrive at high speed or in alternating sequences.
Its main advantages include:
- Operation synchronised with the line speed.
- Ability to remove consecutive products.
- Precise operation without stopping the main conveyor.
- Integration with different inspection systems.
- Preservation of the arrival order in the rejection area.
Preserving the order of the removed products facilitates subsequent analysis, as each unit can be linked to the detected defect and it can be determined whether the cause originates from the product, its packaging or an earlier stage of the line.
Automatic distributors: diverting products for inspection or reprocessing
Not every product identified during inspection needs to be permanently discarded. In some applications, it is more efficient to direct it to a manual inspection, rework or reprocessing area.
Automatic distributors can modify the product path without stopping the main line. Depending on the process configuration, systems with one input and two outputs, two inputs and three outputs, or four inputs and two outputs can be used.
A servo-driven one-to-two high-speed diverter can operate in synchronisation with conveyors running at up to 50 metres per minute and handle production rates of up to 30,000 containers per hour, depending on the dimensions and characteristics of the product.
These systems make it possible to:
- Separate compliant products from those awaiting inspection.
- Send units to a rework line.
- Balance the flow between different stations.
- Prevent congestion in downstream equipment.
- Maintain continuous production during sorting.
Quality control is therefore not limited to accepting or rejecting products, but can organise different destinations according to the type of issue detected.
Manual extractor with collection tray: support during incidents and stoppages
Even when a line is equipped with automatic inspection and rejection systems, situations such as unexpected stoppages, maintenance work, format changes or additional inspections must also be anticipated.
The manual extractor with collection tray allows products to be temporarily removed from the line quickly and in a controlled manner.
Its locking system on both sides provides stability during handling and enables intervention without the need for tools or an electrical power supply.
This solution helps to:
- Prevent build-ups during a stoppage.
- Reduce product losses.
- Facilitate occasional manual inspections.
- Remove units without contaminating the working environment.
- Subsequently restart the flow in an orderly manner.
It is a simple yet useful support system for automatic packaging, filling and individual product conveying lines.
Rotary accumulation tables: manual collection after inspection
Once the product has passed quality control, it can continue to packing, case packing or a manual collection operation.
Rotary accumulation tables are simple solutions designed to remove products from the line and keep them accessible so that the operator can collect them manually.
Their rotary movement distributes the units across the table surface and prevents them from becoming concentrated at a single outlet point. This facilitates visual inspection, case packing and finished product removal tasks.
Their advantages include:
- Simple integration at the end of a conveyor.
- Comfortable and orderly collection by the operator.
- Reduction of build-ups at the outlet point.
- Robust, easy-to-maintain design.
- Adaptation to different containers and formats.
Their simplicity makes it possible to resolve certain outlet requirements effectively without incorporating more complex handling systems.
Automated handling of compliant products
Quality control does not necessarily end when the product passes inspection. In many installations, compliant units must be placed in trays, boxes or supports before proceeding to other stages.
In these applications, robotic handling systems can be integrated to pick up the product, change its orientation and deposit it accurately.
For example, an oven tray loading robot can transfer previously inspected units to the next process, reducing manual intervention and maintaining repeatable placement.
The integration of robotic equipment makes it possible to:
- Maintain a constant handling rate.
- Reduce repetitive operator movements.
- Prevent damage during picking.
- Adapt to different formats using specific tooling.
- Connect quality control with subsequent packaging or processing.
Automation and traceability: information for improving the process
One of the main benefits of automated quality control is the ability to record information about each inspection and each rejected product.
The system can store data such as:
- Total number of units inspected.
- Number of products rejected.
- Type of defect detected.
- Date and time of each incident.
- Frequency of defects.
- Performance of each shift or batch.
This information can be integrated with PLCs, HMI interfaces, SCADA systems or industrial management platforms to facilitate monitoring and decision-making.
Electrical installation and industrial automation solutions make it possible to coordinate the different items of equipment on the line, synchronise conveyors and rejectors, record incidents and adapt operation to production requirements.
Data analysis also helps identify recurring defects and locate their origin. Quality control therefore ceases to be merely a corrective measure and becomes a tool for continuous improvement.
Benefits of integrating the entire quality control process
Combining conveying, positioning, inspection, rejection and handling systems provides benefits that go beyond the occasional detection of defective products.
- Continuous inspection of production.
- Reduction of errors associated with manual quality control.
- Precise removal of non-conforming units.
- Maintenance of the production rate.
- Greater defect traceability.
- Fewer complaints and returns.
- Reduction of build-ups and bottlenecks.
- Better utilisation of the resources assigned to quality control.
In addition, designing the system as an integrated solution prevents each item of equipment from operating in isolation. Coordination between conveyors, cameras, sensors, distributors and rejectors is what enables stable quality control compatible with high-output production lines.
Automated quality control does not simply involve installing a camera at the end of the line. Detecting and removing defective products without stopping production requires the coordination of every stage of the process: product presentation, conveying, positioning, inspection, sorting, rejection and subsequent handling.
The integration of product positioners, hinged conveyors, machine vision systems, electronic rejectors, automatic distributors and auxiliary equipment makes it possible to maintain continuous control without compromising manufacturing speed.
At IFAMAC, we design solutions adapted to the characteristics of each product and industrial line. The objective is not simply to detect an anomaly, but to ensure that the entire system operates in a coordinated manner to improve quality, traceability and the overall efficiency of the production process.