With the development of the food packaging industry, there will be more and more demand for dynamic belt conveyor metal detector for various food quality control applications. Food Metal detector is adopting latest DSP technology to detect if there is any foreign impurity contamination in the package bag or bottle and reject them with alarm stop or reject them automatically in order to ensure the qualified goods to the consumer market with low complainant, which is important step to control goods quality.
1. Main Structure of Metal Detector Machines
Metal detector refer to dynamic online belt metal detecting devices controlled by main board to execute metal detecting task traditionally performed by manual test on special tool. Normally there are three sections on a full unit, guide-loading section by manual or up-steam production line, detecting head with open tunnel section and automatic rejecting system base on exact project request, such as package size, weight and packing material, widely apply for bag, pouch, bottle, jar or carton package type in food packaging line.
2. Working Principle of Metal Detector Machines
1-The in-order products with equal distance go into the detecting tunnel;
2-When the product pass the metal detecting tunnel, it start to check and detect;
3-During the period the product pass through the detecting head, it will detect the goods with FE, Non-Fe or SUS, which will stop the machine with alarm light;
4-It will reject the NG goods by air blasting, cylinder pusher or drop belt (option).
3. Benefits of Metal Detector
- Product quality control avoid the client’s complaints;
- Save material by recycling use;
- Online dynamic detecting without influence the normal production;
- Stable performance with low maintenance;
4. Different Type Metal Detectors Available
Many models are available for different project requests as below:
- Detecting Tunnel size : 2015/3018/4025/5030/6040 base on package size
- Aluminum Version: Special for any aluminum package bag, bottle or box
- Combo Metal Detector with Check weigher: Compact food metal detecting and weight checking for small package such as sausage, snack food bag or jars, etc.
5. Factors to Consider When Purchasing Metal Detecting
When choose a suitable metal detector machine, several critical factors influence the decision-making process:
- Package size and Weight: Choose best belt size and detecting tunnel height.
- Package Material: Full metal version or Aluminum version
- Rejecting System: Air blasting, Flipper-arm, Cylinder-pusher or belt drop, etc
- Running Direction: From left to right or from Right to left
All the above factors ensures that metal detector machine align with project request requests, maximizing productivity and return on investment.
6. Conclusion
In conclusion, food metal detector is playing more and more importance roles in quality control process, especially in food packaging industry, and provide high detecting sensitivity with high speed solution for various food or non-food packaging line in order to enhance company product quality and meet the market request. After understanding their classification model according to project package size and packing material, and rejecting system, which will be helpful for the clients to make correct decisions to optimize food packaging line. With the advantage benefits of metal detector machine not only improves production qualification rate but also comply with the commitment to food quality in the competitive global market.
