An automatic film extension device

Abstract

The invention relates to a device for achieving continuous supply of films automatically. The device is simple in structure, high in working efficiency and capable of achieving automation film connection. The device comprises a machine frame, more than two unreeling rollers arranged on the machine frame in a rotary mode, a fusing device arranged in front of the unreeling rollers and used for cutting off the packaging films, a hot melting jointing device arranged in front of the fusing device and used for connecting two packaging films, and an electrical control system, wherein the fusing device comprises a support arranged on the machine frame, a fusing base arranged on the support, and a fusing driving device arranged on the support, two press-fit bases are arranged on the support and located above and below the fusing base respectively, the two press-fit bases can get away from or approach the fusing base under the driving of the fusing driving device, fusing wires communicated with an external power supply are arranged on the upper side and the lower side of the fusing base respectively, and the unreeling rollers, the hot melting jointing device, the fusing wires and the fusing driving device are all connected with the electrical control system.

Description

technical field [0001] The invention relates to an automatic film extension device. Background technique [0002] At present, in packaging and other fields, the unwinding of packaging film is usually single-roll release. After the release is about to be completed, stop, cut, re-wind, and release again, and so on. This single-roll release cycle method not only requires Manual real-time attention also needs to judge whether the remaining amount can reach the amount of one packaging, if not, it needs to be cut, which is a waste of material, and once the judgment is inaccurate, the amount of packaging may not be enough, resulting in a failed packaging , needs to be reworked. The existing method is not efficient, and personnel need to pay attention to the machine at all times, which also wastes materials. There is another way to use a cutter to cut the packaging film, and then use double-layer adhesive tape to bond the front and rear two rolls of packaging film to form a contin...

AI Technical Summary

Problems solved by technology

[0002] At present, in packaging and other fields, the unwinding of packaging film is usually single-roll release. After the release is about to be completed, stop, cut, re-wind, and release again, and so on. This single-roll release cycle method not only requires Manual real-time attention also needs to judge whether the remaining amount can reach the amount of one packaging, if not, it needs to be cut, which is a waste of material, and once the judgment is inaccurate, the amount of packaging may not be enough, resulting in a failed packaging , need to rework

The existing method is not efficient, and personnel need to pay attention to the machine at all times, which also wastes materials.

There is another way to use a cutter to cut the packaging film, and then use double-layer adhesive tape to bond the front and rear two rolls of packaging film to form a continuous conveying state, but this cutting and bonding process is often prone to wrinkling. It is not conducive to the beauty of packaging, and the adhesion is not strong, and it is easy to wrinkle or the two layers of film are separated when there is tension during packaging.

The existing packaging film has a PE packaging film with a thickness of 0.3-1 mm. This film is not easy to be damaged when used for packaging and has a long service life. However, it is relatively difficult to cut this film, and the sharpness of the cutter is required High, when the cutter is used for a long time, it is easy to appear the phenomenon of continuous cutting

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