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 Overview
1. Performance Summary
The MT-DZ-XL-S2-01 is a fully automated functional inspection system designed for high-speed production environments, capable of evaluating up to 300 packages per minute. Utilizing a contact-based online detection method, it measures the internal pressure of containers directly and accurately. The system provides consistent and reliable sampling data, delivering inspection precision that exceeds both domestic and international standards.
Its core technology, the belt-squeeze detection method, has been refined over more than ten years of research and practical application. During operation, a flexible belt gently compresses the product as it moves along the conveyor, while a side-mounted sensor captures the internal pressure response. This signal is then digitized and analyzed to determine the container’s internal pressure and overall product quality.
2. Suitable Products for Inspection
Cartons or bags containing liquid nitrogen
Plastic bags filled with gas or steam
Stand-up pouches containing liquid aluminum foil
3. Inspection Capabilities
Detection of leaks caused by faulty seals
Identification of under-pressurized or abnormally bulging packages
4. Key Features and Technical Specifications
Automatic synchronization with production line speed; the machine halts during line stoppages to prevent damage or jamming
Inspection speed exceeding 300 packages per minute
Compatible with both high- and low-pressure product types
Pressure measurement accuracy up to ±0.02 MPa
High durability against mechanical shocks and vibrations
Intuitive HMI interface for easy operation
Real-time display and monitoring of multiple rejection datasets
Visual alert system for abnormal events
Full Chinese-language menu for localized operation
Proprietary Maotong DSP digital signal processing algorithm
24/7 remote technical support available
Continuous rejection functionality with automatic shutdown protection
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% |
Schematic diagram of equipment extrusion
5. Leak Detection Method
At the system’s front end, a guiding mechanism pre-compresses each product to stabilize internal pressure. If a leak is present, the system releases pressure maximally, resulting in a notable deviation in tail-end pressure readings. Intact products show minimal pressure changes, allowing accurate detection of leaks or poor sealing.
6. Principle of Operation
As a product moves along the conveyor, a positioning sensor records its arrival, identification number, and encoder signal. This triggers the force sensor to measure the instantaneous pressure exerted on the conveyor belt.
Pressure data is transmitted to the Maotong signal processing board for analysis. Results are displayed in real time on the HMI and sent to the control unit. If a product fails to meet pressure standards, the control unit triggers the rejector to remove the defective item.
II. Equipment Installation
1. Transport, Unloading, and Storage
During transport, secure the equipment firmly and use protective packaging. Pay special attention to sensors to prevent pressure or tension damage. Wrap the exterior with moisture- and impact-resistant materials to avoid scratches, dents, or water exposure. Ensure the machine is firmly fixed during transit to minimize vibration.
For unloading, use proper lifting equipment and secure the machine to prevent slipping. During storage and operation, maintain environmental conditions as follows:
Relative humidity: 10%–80%
Temperature: 0°C–50°C
2. Installation Requirements
Install the equipment on a level surface, ensuring the clamping conveyor belt aligns parallel with the bottom conveyor belt.
Before powering on, verify all cable connections and confirm grounding of the control box.
Electrical supply: Single-phase AC 220V, 50Hz, total power 250W.
Compressed air supply: 4–8 bar, meeting industry quality standards.
For optimal measurement accuracy, test products after cooling. Install the system on a straight conveyor section 1.5–2 meters long.
3. Structure and Appearance
Overall dimensions: See design diagram
Frame: 304 stainless steel, integrated with the conveyor system
Approximate weight: 100 kg
III. Safety Guidelines
Before operating the equipment, follow these safety measures:
Only trained personnel should operate the machine.
Maintenance and repairs must be performed by qualified technicians.
Ensure all protective devices and warnings are in place before starting the machine.
Never operate the machine with the cover open. Only open the cover after disconnecting power and compressed air.
Keep hands away from the reject cylinder rod while the machine is running.
Do not block or touch the photoelectric sensor during operation to avoid false rejections or safety hazards.
Do not disconnect electrical connections while the system is powered on to prevent damage.
Use safety tags during maintenance to prevent accidental start-up.
When connecting external devices, power off both systems first and reconnect only after completing all connections.
Electronic components are sensitive to static; ensure the frame and control cabinet are properly grounded.
