In the field of food processing and packaging automation, the mixing of metal foreign matters has always been a key quality risk concerned by manufacturing enterprises. With years of deep cultivation in the field of packaging automation, Guangzhou Marchi Packaging Equipment Co., Ltd. independently developed food metal detectors. With stable detection performance and multi-product adaptability, it provides food metal foreign matter detection solutions for various food, pharmaceutical and chemical enterprises, effectively reducing product safety risks.
I. Core Technology Upgrade of Metal Detection, Significantly Improved Detection Accuracy and Stability
Marchi's newly launched automatic metal detector has carried out a number of technical upgrades at both software and hardware levels, further improving the detection accuracy, stability and service life of the equipment:
(1) New Core Functions
- Phase Tracking Function: Equipped with real-time phase tracking capability, it maintains high-precision detection status continuously under different production conditions, and effectively copes with interference caused by changes in material electromagnetic characteristics.
- Product Tracking Function: It can automatically adjust and compensate internally according to changes in product effect, realize fast switching detection of multi-category and multi-specification materials, and reduce manual intervention.
- Automatic Balance Calibration Function: Built-in automatic balance calibration mechanism extends the service life of the equipment and ensures stable detection effect during long-term operation.
(2) Hardware and Data Processing Upgrade
Adopting high-performance FPGA to realize DDS technology, combined with advanced DSP data processing architecture, the overall digital level of the machine is significantly improved, and the anti-interference performance is further enhanced. Different from the traditional analog circuit detection method, this digital solution can maintain stable detection even in complex electromagnetic environments, and is suitable for matching with high-speed packaging production lines.
II. Specification Parameters of Marchi Metal Detector
As a professional metal detector manufacturer, Marchi provides various specifications of metal detection equipment to meet the detection needs of different industries. The key parameters of 5020/5025 food metal detector are as follows:
- Detection Tunnel Width: 500mm
- Detection Tunnel Height: 200mm / 250mm (dual specifications optional)
- Empty Machine Detection Sensitivity: Fe 1.2-1.5mm, Sus304 1.5-2.0mm
- Conveyor Belt Width: 460mm
- Conveyor Height: 750±50mm (customizable)
- Conveying Capacity: Maximum 100kg
- Display Mode: LED Display
- Conveyor Speed: 25m/min (speed regulating inverter optional)
- Power Supply: AC220V, 200W
- Running Direction: From left to right facing the operation side
- Rejection Mode: When metal foreign matter is detected, the buzzer and warning light will alarm, and the air blast rejection device will be activated simultaneously
III. Full Process of Packaging Production Line: From Feeding to Palletizing
Marchi metal detector can be seamlessly connected into the overall packaging production line to realize full-process automation from packaging to palletizing. Taking the food powder packaging production line as an example, the complete technological process is as follows:
- Feeding and Mixing: Raw materials are processed by dust-free feeding and automatic mixing system to ensure material uniformity and dust-free operating environment, reducing potential safety hazards caused by dust overflow.
- Lifting, Weighing and Packaging: Materials enter the fully automatic packaging machine through the elevator. The system adopts a high-precision weighing module to control the filling volume in real time and ensure consistent weight of each package. The packaging speed is stable and controllable, supporting bag making, filling and sealing of various bag types.
- Weight Detection: After packaging, products enter the weight detection process. Packages with overweight or underweight weight will be automatically rejected to ensure that each product complies with specification standards.
- Metal Detection: Qualified products after weight detection are sent to the metal detector via conveyor belt. The food metal foreign matter detector scans each package online. Once metal foreign matter (ferrous or stainless steel) is detected, the system immediately triggers the rejection device to separate defective products from the production line with rapid response, without interrupting the continuous operation of the packaging line.
- Carton Unpacking, Packing and Sealing: Qualified products are conveyed to the automatic carton unpacker, placed into cartons by the automatic case packing equipment, then sealed by the automatic carton sealer and strapped to form finished cartons.
- Automatic Palletizing: Finished cartons enter the fully automatic palletizing system. The robot palletizer stacks products on pallets in order according to preset stacking patterns. The whole process requires no manual intervention, which significantly reduces labor intensity, improves palletizing neatness and space utilization, and facilitates subsequent warehousing and transportation.
Finally, the palletized finished products are sent to the finished product warehouse or directly loaded for delivery through the conveying system. Marchi can customize the design and integrated debugging of the entire production line to ensure seamless connection of each link and realize full-process automatic management from raw material feeding to finished product delivery.
IV. Marchi Service Cases
Marchi Packaging Equipment Factory has 27 years of experience in the packaging machinery industry, more than 5,000 cooperative customer cases, and exports to over 50 countries. It is a long-term supplier to Fortune Global 500 enterprises, supporting whole factory scheme design and non-standard customization. It can package powder, granule, liquid and other materials, and has cooperated with many large food, pharmaceutical and chemical enterprises.
- Food Industry: PepsiCo, Yili, Uni-President Enterprises, YumChina, Little Sheep, Tastien, By-health, Nam Soon Group, Five Grains Mill, Yan Gufang, SEAMILD, Qiandao Bee Garden, Sanjiu Group, Puratos, Guangxi Nongken Mingyang Starch, Dong'e Ejiao, Wen's Group, Amway, etc.
- Pharmaceutical Industry: Tianjin Hongri, Weigao Group, Dong'e Ejiao, Xiuzheng Pharmaceutical, Yibai Pharmaceutical, Lukang Pharmaceutical, Taihang Pharmaceutical, Niscon, Jinkun, Hubei Gongtong Pharmaceutical, Fuhe Group, Infinitus, Zhejiang Medicine, Zhejiang Guobang Pharmaceutical, etc.
- Veterinary Drug Industry: Longxiang Pharmaceutical, Jizhong Pharmaceutical, China Animal Husbandry Industry, Cheng Bixin, Houyi Group, Ramical, Twins Group, Yuehai Group, Haid Group, Wen's Group, Zhengbang Group, etc.
- Food Additive Industry: Xinghu Technology, Xintuyang Biology, Muen Biology, Yinong, Puratos, Sanjiu Group, Ajinomoto, Meihua Group, Chenguang Biology, Rhine Biology, Jinhe Biology.
- Chemical and Daily Chemical Industry: Liby, P&G, Yongxin Chemical, Shengtai Chemical Technology, Guangzhou Hekang, Forster, Sanrun, CATL, Sany Group and other new energy, new material, mineral and chemical products.
V. Customer Pain Points and Solutions
In actual production, food manufacturing enterprises are prone to the following prominent problems from packaging to palletizing, and Marchi provides targeted solutions:
- Pain Point 1: The risk of metal foreign matter mixing is difficult to control, and manual visual inspection has blind spots.
Solution: The online metal detector scans each package in real time and automatically rejects defective products once foreign matter is detected, eliminating hidden quality dangers from the source.
- Pain Point 2: Different products have great differences in detection signal interference, and frequent machine adjustment affects production efficiency.
Solution: The product tracking function automatically adjusts internal parameters without frequent manual calibration, realizing rapid production switching.
- Pain Point 3: Unexpected production line shutdown will cause heavy losses, and customers have high requirements for equipment stability.
Solution: Phase tracking and DSP technology ensure stable detection of the equipment at high operating speed and minimize downtime.
- Pain Point 4: A large number of workers are required in packaging and palletizing processes, who are prone to fatigue with high error rate.
Solution: The entire production line realizes full-process automation from feeding to palletizing, requiring only a small number of personnel for inspection, significantly reducing labor intensity.
- Pain Point 5: The detection effect gradually declines after long-term use of equipment, affecting product quality control.
Solution: The automatic balance calibration function continuously maintains the detection effect of the equipment and prolongs its service life.
VI. Why Choose Marchi
As a metal detector manufacturer capable of providing full-process solutions for packaging production lines, Marchi's advantages are reflected not only in equipment:
- Direct Supply from Source Manufacturer: As a powerful source manufacturer, goods are directly supplied from the production end, eliminating intermediate circulation links.
- Whole Line Integration Capability: Metal detectors can be seamlessly connected with packaging machines, weight checkers, automatic carton unpacking & packing machines, carton sealing & strapping machines, robot palletizers and other equipment to provide one-stop packaging solutions.
- Technical Strength and Engineering Experience: With years of technical accumulation in the field of automated packaging, Marchi has provided customized packaging production lines for food, pharmaceutical, chemical, agricultural and other industries.
- Perfect After-sales System: Each customer's equipment and components have lifelong numbers, common spare parts are in stock for a long time, and all drawings, programs, lists and other materials are fully backed up for maintenance at any time. Nationwide after-sales response ensures customers worry-free use.
Conclusion
The quality safety and efficiency improvement of food packaging production are inseparable from a stable and reliable metal detection link. With continuous technical updates and solution optimization, Marchi will create safe, efficient and complete automated packaging production lines for more customers.
