Analysis of common failure causes of multifunctional aluminum-plastic packaging machine

The multi-function aluminum-plastic packaging machine uses a variable frequency speed control device, and the speed can be adjusted freely within the specified range. Automatic detection function, if the bag is not opened or the bag is incomplete, no feeding, no heat sealing, the bag can be reused, no material is wasted, and the production cost is saved for the user. Safety device, when the working pressure is not normal or the heating pipe is faulty, an alarm will be given. The bag feeding method can store more bags, and the quality of the bag is lower, and the rate of bagging and bagging is high. Applicable to: capsules, plain tablets, sugar coatings, capsules, injections, shaped, etc., as well as medical devices, light foods, electronic components blister sealed packaging.

The long-term use of the multi-functional aluminum-plastic packaging machine is inevitable, and it is necessary to learn how to analyze and solve it. According to the production experience, it is found that the multifunctional aluminum-plastic packaging machine is easy to be formed in the blister and heat-sealed in use. If there are problems in the other areas, here is a brief description of how to solve them.

1, blister forming

According to the blister forming method, the PVC film (hard piece) is heated and then passed through a mold and molded into a blister of a desired shape and size by using compressed air or vacuum. Therefore, when the formed blister has a problem, it is necessary to proceed from the following aspects. solve:

(1) Whether the PVC film (hard piece) is a qualified product;

(2) Whether the temperature of the heating device is too high or too low;

(3) Whether the surface of the heating device adheres to PVC;

(4) Whether the forming mold is qualified, whether the forming hole is smooth, and whether the air hole is smooth;

(5) Whether the cooling system of the forming mold is working properly and effectively;

(6) Whether the vacuum degree and exhaust rate of the drum type negative pressure forming can reach the normal value, and whether the pipeline has abnormal loss;

(7) Whether the compressed air of the flat positive pressure forming is clean and dry, whether the pressure and flow rate can reach the normal value, and whether the pipeline has abnormal loss;

(8) Whether the flat positive pressure forming mold clamps the PVC belt in parallel and whether there is air leakage.

2. Some advanced aluminum-plastic blister packaging machines are equipped with various automatic monitoring devices, which can play various protection functions and automatically stop the operation of the machine when the following problems are found:

(1) The safety shield is opened;

(2) insufficient compressed air pressure;

(3) The heating temperature is not enough;

(4) PVC film or aluminum foil is used up;

(5) The packaged medicines are used up;

(6) Some stations are mechanically overloaded;

(7) The circuit is overloaded.

The machine will not be able to start running until the following issues are resolved:

(1) The safety shield is not completely closed;

(2) insufficient compressed air pressure;

(3) The heating temperature is not enough;

(4) lack of PVC or aluminum foil film;

(5) overload or other faults have not been eliminated;

(6) The setting of the function button is incorrect, and the emergency stop key is not reset.

3, hot pressing sealing

In the hot-press sealing process of the drum type aluminum-plastic blister package, the PVC tape and the aluminum foil are hot-pressed by the mutually parallel roller-shaped heat sealing roller and the anilox roller under the action of a certain temperature and pressure. Sealed. The contact between the heat seal roll and the anilox roll is a linear contact and the required pressure is relatively small.

In the hot-press sealing process of the flat aluminum-plastic blister package, the PVC tape and the aluminum foil are heat-sealed by the parallel flat heat-sealing plate and the anilox plate in the same plane under a certain temperature and pressure. Combined. The contact between the heat seal plate and the anilox plate is in a planar contact, and the required pressure is relatively large.

Whether it is a drum type or a flat type hot-press sealing, when there are problems such as unclear heat-sealing netting, different shades of the net, and heat-closing PVC belt running position causing foaming, etc., it is necessary to solve the following aspects:

(1) Whether the aluminum foil is a qualified product, and whether the heat sealing surface is coated with a hot melt that meets the requirements;

(2) Whether the temperature of the heating device is too high or too low;

(3) Whether the operation of PVC tape or aluminum foil has abnormal resistance;

(4) Whether the heat-sealing mold is qualified, whether the surface is smooth and smooth, and whether the blister formed on the PVC belt can be smoothly inserted into the hole of the heat-sealing roller (plate);

(5) Whether the texture on the anilox roller (plate) is clear and the depth is consistent;

(6) Whether the cooling system of the heat-sealed mold is working properly and effectively;

(7) Whether the pressure required for heat sealing is normal;

(8) Whether the heat sealing roller (plate) and the anilox roller (plate) are parallel.