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Automatic Sealing With Shrink Tunnel

Suitable for high capacity, assembly-line packaging scenarios—including disposable food service ware, snack food packaging, medical devices, personal care products, hardware and building materials, stationery and books, and ceramic kitchenware—and supports continuous, 24-hours factory production line operations.

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Product Introduction

1. Model and function

This machine is a pillow packaging machine, which can automatically complete the automatic bag making, wrapping, sealing and cutting of cylindrical roll film. It is suitable for single or multiple continuous packaging of fixed-shaped items. For different product packaging requirements, the longitudinal sealing can achieve bottom sealing or side sealing.

2. Application and characteristics

This machine is suitable for group packaging of food and beverages, bowl noodles, milk tea, mosquito coils, wallpaper, exercise books, filters, electrical switches, various stationery, industrial parts and daily cosmetics skin packaging. This machine has a wide range of applications and can quickly change the packaging variety through adjustment.

3. Working principle and structural features

The packaging film roll is formed after entering the bag maker through the film feeding drive roller. The packaged object is fed into the formed packaging film by the feeding conveyor, and then sealed by the sealing device to form a tube. The longitudinal and transverse sealing and clamping conveyor smoothly feeds the tubular film after wrapping the object into the transverse sealing and slitting device. The photoelectric tracking automatic control system adjusts the sealing and cutting position, and then the product is transported through the bridge into the shrinking furnace for shrinking. After coming out of the shrinking furnace, a packaging process is completed.

This machine uses the most advanced three-servo control system in China, which is programmable and automatically counted. The bag length speed is automatically realized, the temperature is automatically controlled, and the photoelectric tracking is automatically controlled. Overload protection, leakage protection. Fault alarm and other advanced technologies and safety devices are fully functional.

The equipment has a compact structure, simple operation, reliable operation, high packaging speed, stable packaging quality, and a flat and beautiful packaging appearance.

Common fault causes and troubleshooting methods

Common faults	Causes of faults	Troubleshooting methods
1. The power indicator light is off	1. No power	1. Check whether the power is on
	2. The indicator light is broken	2. Replace the power indicator light
2. The leakage switch trips	1. Heating tube leakage 2. Recirculation loop leakage 3. Overcurrent 4. Component damage	1. Close the longitudinal seal and transverse seal air switches respectively to determine whether the longitudinal seal or transverse seal is leaking electricity. Use a megohmmeter or multimeter to detect which heating tube has a lower resistance to the shell than 0.5MΩ and replace it. 2. The carbon brush of the printer and transverse seal is too dirty, causing leakage. Wipe it gently with a dry cloth. 3. Check for short circuit 4. Replace the leakage switch
3. The inverter has an error message		Please refer to the inverter manual
4. The temperature controller shows an error indication	Refer to the temperature controller manual	Check the return loop and whether the thermocouple is short-circuited or open-circuited
5 The host cannot move	1. PLC has no input 2. Inverter operation command has changed 3. Inverter is damaged 4. Motor is damaged	1. Check if the PLC "inverter start" has output 2. The inverter operation command should be "terminal control" 3. Replace the inverter 4. Replace the motor
6. The vertical seal is not firm	1. Improper longitudinal seal temperature adjustment 2. Poor contact of longitudinal seal pressure roller or too little pressure 3. The longitudinal seal is not hot at all	1. Adjust the temperature according to the packaging paper material and packaging speed. 2. Check whether the roller bearing is damaged and adjust its clamping force. 3. Check whether the longitudinal sealing heating circuit, heating tube, and solid-state relay are damaged, and whether the temperature controller has a DC12V voltage to control the solid-state relay. 4. Replace high-quality packaging paper
7. Poor horizontal sealing	1. Improper temperature adjustment 2. Improper adjustment of the horizontal sealer 3. Poor quality of packaging paper 4. Heater is not hot	1. Adjust the temperature according to the material and speed of the wrapping paper. 2. Refer to the adjustment of the transverse sealer and the eccentricity. 3. Replace high-quality wrapping paper 4. Check the transverse seal heating circuit, whether the carbon brush is in good contact, and whether the heating tube and solid-state relay are damaged.
Common faults	Causes of faults	Troubleshooting methods