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The Axon EZ-Seal Heat Shrink Tunnel is an automatic packaging system designed for the application of heat shrinkable sleeves and tamper-evident bands. It is available in two primary styles: Convective (BR/SR Models) and Radiant (IR Models), each tailored to specific operational needs. The Convective models utilize forced hot air recirculation, while the Radiant models employ infrared heating. This tunnel, when used in conjunction with an EZ-Seal sleever, forms a comprehensive system for efficient and reliable shrink packaging.
The core function of the EZ-Seal Heat Shrink Tunnel is to apply heat to shrinkable films, causing them to conform tightly to products. This process is crucial for tamper-evident banding, full-body sleeve labeling, and multi-packing applications. The tunnel is equipped with standard control components, sensors, and heating elements that work in concert to achieve precise and consistent heat application.
In Convective (BR/SR Models), the heat shrink process relies on a forced hot air recirculation system. A Blower Motor (1057) drives two blower wheels: a lower wheel (3052) for re-circulating hot air to shrink the film, and an upper wheel (3072) to cool control components and the outer skin of the tunnel. A Temperature Controller (1128) monitors a Thermocouple (1031) to maintain a set temperature by controlling power to the Heating Elements (1042 220VAC / 1221 & 1223 480VAC) via a Solid State Relay (1127 220VAC / 1220 480VAC). A Heat Up/Cool Down Switch (1066) allows the operator to enable or disable the heating elements, facilitating warm-up or cool-down cycles. A Snap Switch (1089), a bimetallic switch, controls the fan's operation, turning it on and off around 120 degrees Fahrenheit. For tunnels operating on voltages other than 220 VAC, a step-down transformer (1222) is provided.
Radiant (IR Models), on the other hand, use Infrared Elements (1629) for heating. A Proportional Controller (1631) with an integral on/off switch monitors and controls the electrical current to these elements to maintain the desired heat level. A dedicated Fan (1054) ensures that control components remain cool and dissipates heat from the tunnel's outer skin. These models are designed for applications where infrared heat is more suitable for the shrink film or product.
The EZ-Seal Heat Shrink Tunnel is designed for ease of operation and reliability, offering several features to enhance user experience and product quality.
For Convective (BR/SR Models), the sequence of operation begins with applying power, which illuminates the temperature controller. The operator sets the desired temperature using the MENU button and UP/DOWN arrows. The Heat Up/Cool Down switch is then moved to the "heat up" position. The fan is designed to start automatically when the temperature reaches approximately 120-130 degrees Fahrenheit. Once the tunnel reaches the setpoint, the shrinking operation can commence. After completing the run, the switch is moved to the "cool down" position, and the fan continues to run until the temperature drops to 110-120 degrees Fahrenheit, at which point power can be turned off. This controlled cool-down prevents damage and ensures safety.
Radiant (IR Models) have a simpler operational sequence. Upon applying power, the fan starts, and a pilot light comes on. The Proportional Controller Switch (1631) is set to the desired level, and the tunnel is ready for product in approximately 10 minutes. After use, the switch is turned off, and the fan is allowed to run for 10 to 15 minutes to cool down the heat tunnel before turning off power.
Installation of the tunnel can be achieved through various means. The standard method involves mounting provided angle brackets onto an existing conveyor, using four threaded rods and nuts to adjust the tunnel height. The recommended height adjustment places the bottom of the tunnel 1/2 inch below the lowest point of the band. Optional mounting solutions include an Auto Tunnel Lift (2030, 2096), which uses a pneumatic cylinder to raise the tunnel from the conveyor surface, preventing damage to the conveyor and product. Another option is a Tunnel Stand, which allows the tunnel to be moved between packaging lines and can be provided with castors for mobility. The Tunnel Stand also includes an EZ-Lift, a manual hand crank for height adjustment.
Safety is a paramount consideration, with clear message conventions to guide operators. "DANGER" alerts to serious injury or death risks, particularly concerning the high temperatures of heating elements. "WARNING" indicates potential for personal injury, such as allowing the unit to cool before turning off power. "CAUTION" highlights risks of equipment damage, like running the tunnel without the conveyor. "ELECTRICAL DANGER" specifically warns about electrical hazards. "TIP" provides helpful information for minimizing operational problems, while "NOTE" offers additional useful information. "CHECK" prompts operators to review actions before proceeding, and "IMPORTANT" alerts to actions that could lead to operational problems or equipment damage if instructions are not followed.
The EZ-Seal Heat Shrink Tunnel is designed for straightforward maintenance to ensure years of trouble-free and reliable operation. Regular preventive maintenance is crucial for optimal performance and longevity.
Key maintenance checks include:
Troubleshooting guidance is provided for common issues such as the tunnel not reaching the desired temperature, not heating up, or not cooling down. For instance, if the tunnel doesn't reach the desired temperature, operators are advised to check the voltage supply, the distance between the tunnel and conveyor (baffles may be needed if the distance is too great or ambient temperature is low), and inspect heating elements for damage using a multi-meter to check resistance. If the tunnel does not heat up, checks include verifying the setpoint, ensuring the Heat-Up/Cool-Down Switch is in the "heat-up" position, observing the red output LEDs on the Temperature Controller and Solid State Relay, and measuring output voltages. Similarly, for cooling issues, operators should confirm the switch is in the "cool-down" position, check the output LEDs, and measure output voltages.
Good housekeeping practices are also highlighted as essential for safety and machine efficiency. Keeping the machine and the surrounding area clean at all times contributes to better performance and easier maintenance.
The EZ-Seal Heat Shrink Tunnel is a robust and user-friendly system, designed with extensive engineering and field-proven experience to provide efficient and satisfactory operation for various packaging needs.
General| Brand | Axon |
|---|---|
| Model | EZ-36 BR |
| Category | Industrial Equipment |
| Language | English |
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