Bread leak detection machine
1.Using extrusion method and advanced force analysis algorithm, the fastest output can reach 400 bags / min.
2.It is suitable for nitrogen flled and other inflatable bagged food products
I. Product Introduction
1. Performance Overview
The MT-DZ-XL-S2-01 is a fully automated functional testing system with a maximum throughput of 300 packs per minute. It employs a contact-based online detection method, which directly measures and accurately reflects the internal pressure characteristics of product containers. The system delivers highly stable sampling data with superior testing accuracy compared to both domestic and international alternatives. Its core belt-squeeze detection technology, refined over more than ten years of R&D, utilizes a flexible belt clamp to compress products during conveying. A side-mounted sensor captures the resulting pressure signal, which is converted into digital form by the controller and analyzed to assess the container’s internal pressure and quality.
2. Applicable Products
Cartons/bags containing liquid nitrogen
Plastic pouches filled with gas or steam
Liquid aluminum foil stand-up pouches
3. Inspection Capabilities
Detection of leaks caused by faulty sealing
Identification of under-pressurized or over-inflated bags
4. Performance Specifications
Automatic line-speed tracking; machine halts when the production line stops to avoid idle operation, bag bursts, or product jams
Inspection speed of up to 300 packs/minute
Capable of detecting both high- and low-pressure products
Pressure detection accuracy of ±0.02 MPa
High-speed impact resistance
User-friendly HMI operation
Real-time dynamic display of multiple rejection data sets
Visual alarm for impact events
Chinese-language interface menu
Proprietary Maotong DSP digital signal processing algorithm
24-hour remote support service
Continuous rejection with automatic line shutdown function
serial number
| Test contents | Test Description | Rejection rate
| False rejection rate
|
1 | Bag leakage | Improper sealing or leakage caused by material jamming | ≥99.98% | ≤0.05% |
2 | Bag pressure | Bagging pressure after sealing is too low or too high, deviating from the normal value by ±0.02 MPa | ≥99.93% |
6. Schematic diagram of equipment extrusion
Leak Detection Mechanism
At the front end of the system, a guiding mechanism pre-compresses the product to establish a stable internal pressure. If leakage occurs, the pressure is released as much as possible and the residual pressure is measured at the rear. For intact products, pressure variation remains minimal, while defective or poorly sealed products exhibit significant pressure deviations. This approach enables reliable identification of leaks and sealing defects.
7. Detection Principle
When a product passes through the belt, it is detected by the positioning sensor, which records both the product ID and encoder signal in the control unit. The sensor then triggers the force sensor to capture the instantaneous pressure exerted by the product against the belt. The measured data is transmitted to the Maotong signal processing board for analysis. The processed results are sent simultaneously to the HMI for real-time visualization and to the control unit for judgment. If a defective product is identified, the control unit sends a signal to the rejection device, which removes the corresponding product from the line.
II. Equipment Installation
1. Loading, Unloading, and Storage
During transport, the equipment must be securely packaged, ensuring that sensors are not exposed to external force or tension.
Wrap the machine with moisture-proof and impact-resistant material to prevent scratches, dents, or water damage.
Fix the equipment firmly on the transport vehicle to avoid vibration or collision damage.
Use proper lifting tools during unloading, ensuring stability and preventing slippage.
Storage environment must meet the following conditions: relative humidity 10%–80%, temperature 0°C–50°C.
2. Installation Specifications
2.1 Place the equipment horizontally, aligning the clamping conveyor belt parallel with the base conveyor belt.
2.2 Before connecting the power supply, inspect all cables and verify proper grounding of the control cabinet.
2.3 Connect power supply: Single-phase AC 220V, 50Hz, total power 250W.
2.4 Connect compressed air: 4–8 bar, air quality must comply with industry standards.
2.5 For reliable results, testing should be conducted after products have cooled. The unit should be installed on a straight conveyor section 1.5–2 m in length.
3. Structure and Appearance
3.1 Overall Dimensions: As shown above.
3.2 Frame: Constructed of 304 stainless steel, mounted on conveyor.
3.3 Weight: Approx. 100 kg.
III. Safety Precautions
Before operating, please follow these safety requirements:
3.1 Only trained personnel are permitted to operate the equipment.
3.2 Maintenance must be performed by qualified professionals.
3.3 Ensure all protective devices and safety labels are in place prior to operation.
3.4 Do not operate with the cover open; remove power and compressed air before opening.
3.5 Keep hands clear of the reject cylinder linkage during operation.
3.6 Avoid blocking or accidentally touching the photoelectric sensor during operation to prevent mis-triggering of the reject cylinder.
3.7 Do not unplug electrical connections while the machine is powered, to avoid damaging components.
3.8 When servicing, apply identification tags to the equipment to ensure safety.
3.9 Disconnect power before connecting any external devices; reconnect power only after installation is complete.
3.10 As internal components are sensitive to static, the frame and control cabinet must be properly grounded.
