Magnetic type auxiliary fixing mechanism of hot air type film heat sealing machine

Abstract

The utility model discloses a magnetic type auxiliary fixing mechanism of a hot air type film heat sealing machine, which comprises a film fixing plate fixed in a cantilever manner, a hot air device blowing high-temperature airflow towards the plate surface of the film fixing plate, and a magnetic rotating wheel arranged at the position close to the suspended end of the film fixing plate, the circumferential surface of the magnetic rotating wheel is adsorbed and pressed on the thin film fixing plate, a thin film supported by the thin film fixing plate is clamped between the magnetic rotating wheel and the thin film fixing plate, and the magnetic rotating wheel freely rotates around the fixing shaft along with the movement of the thin film. The utility model has the advantages that the vibration of the film fixing plate in the heat-sealing process can be obviously reduced and even eliminated, and the heat-sealing quality of the hot air type film heat-sealing machine is improved.

Description

Technical Field

[0001] This utility model relates to a hot air film heat sealing machine, and more particularly to a film fixing plate fixing mechanism in such equipment. Background Technology

[0002] Hot air film sealing machines are equipped with a film fixing plate and a hot air device that blows high-temperature airflow towards the plate. The film to be sealed moves along the film fixing plate, and the high-temperature airflow from the hot air device seals the moving film. Existing hot air film sealing machines use a relatively thin film fixing plate. To prevent the film fixing plate from accumulating excessive heat due to prolonged heating by the high-temperature airflow and conducting it to non-sealing areas, existing hot air film sealing machines use a thin film fixing plate to improve heat dissipation. However, on the other hand, due to the influence of other mechanisms in the film sealing machine, the film fixing plate can only be fixed in a cantilever manner, with one end of the film fixing plate suspended. This causes the relatively thin film fixing plate to vibrate easily during the sealing process, affecting the sealing quality. Utility Model Content

[0003] The purpose of this invention is to provide a magnetic auxiliary fixing mechanism for a hot air film heat sealing machine to reduce the vibration of the film fixing plate during the heat sealing process.

[0004] This invention is implemented as follows: The magnetic auxiliary fixing mechanism of the hot air film heat sealing machine includes a film fixing plate fixed in a cantilever manner, a hot air device that blows high-temperature airflow toward the surface of the film fixing plate, and, in particular, a magnetic wheel that rotates freely around a fixed axis. The magnetic wheel is close to the suspended end of the film fixing plate, and the circumferential surface of the magnetic wheel is pressed onto the film fixing plate by magnetic attraction. The film supported by the film fixing plate is sandwiched between the magnetic wheel and the film fixing plate, and the magnetic wheel rotates freely around the fixed axis as the film moves.

[0005] In the preferred embodiment, the fixed shaft of the magnetic wheel is fixed on a height-adjustable bracket.

[0006] The advantage of this invention is that the magnetic roller has an auxiliary fixing effect on the suspended end of the film fixing plate, which can significantly reduce or even eliminate the vibration of the film fixing plate during the hot air film hot sealing process, thereby improving the hot air sealing quality of the hot air film hot sealing machine. Attached Figure Description

[0007] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model. Detailed Implementation

[0008] To facilitate understanding of this utility model, the following embodiments provide a more comprehensive description of the present utility model. The embodiments illustrate implementation methods of the present utility model. However, the present utility model can be implemented in many different forms and is not limited to the implementation methods described in the embodiments.

[0009] See Figure 1 The magnetic auxiliary fixing mechanism of the hot air film sealing machine includes a film fixing plate 1 fixed in a cantilever manner and a hot air device 2 that blows high-temperature airflow toward the surface of the film fixing plate. The hot air device 2 is connected to a lifting mechanism 3 (only a part of the lifting mechanism is shown in the figure). The distance between the film fixing plate 1 and the hot air device 2 can be adjusted by the lifting mechanism. The left end of the film fixing plate 1 is connected to the lifting mechanism 4 (only a part of the lifting mechanism is shown in the figure). The distance between the film fixing plate 1 and the hot air device 2 can be adjusted by the lifting mechanism 4. The right end of the film fixing plate 1 is the suspended end in the figure. The two films 5 to be sealed (only one film is shown in the figure due to the front and rear obscuring relationship) are supported by the film fixing plate 1 and move synchronously together in the direction shown by the arrow in the figure under the pull of the traction mechanism (not shown in the figure). The joint of the two films 5 converges and overlaps below the hot air device 2. As the two films 5 move synchronously, the high-temperature airflow blown by the hot air device 2 seals the two films 5 together at the joint.

[0010] A magnetic wheel 6, which rotates freely around a fixed axis, is provided near the suspended end of the film fixing plate 1. The magnetic wheel 6 can be made of a permanent magnet. The circumferential surface of the magnetic wheel 6 is magnetically attracted and pressed onto the film fixing plate 1. The film 5 supported by the film fixing plate 1 is sandwiched between the magnetic wheel 6 and the film fixing plate 1. The magnetic wheel 6 rotates freely around the fixed axis 7 as the film 5 moves. During the movement of the film, the magnetic wheel 6 is always attracted and pressed against the part of the film fixing plate 1 near the suspended end, which helps to fix the film fixing plate and can significantly reduce or even eliminate the vibration of the film fixing plate during the heat sealing process. Since the magnetic wheel 6 rotates freely around the fixed axis 7 as the film moves, the magnetic wheel 6 does not hinder the movement of the film 5. The magnetic wheel 6 can be a single roller-shaped magnet or a combination of multiple coaxially arranged annular magnets spaced at a certain distance. The magnetic poles of the magnetic wheel 6 are located on its circumferential surface.

[0011] In the preferred embodiment, the fixing shaft 7 of the magnetic wheel is fixed to the height-adjustable bracket 8 to facilitate adjustment of the position of the magnetic wheel 6, ensuring that the magnetic wheel 6 can be adsorbed onto the part of the film fixing plate 1 near the suspended end. A screw 9 for fixing the bracket 8 passes through the elongated through-hole 10 on the bracket and is connected to the hot air device 2. When the screw 9 is loosened, the bracket 8 can move along the length of the elongated through-hole 10.

[0012] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the appended claims.

Claims

1. A magnetic auxiliary fixing mechanism for a hot air film sealing machine, comprising a film fixing plate fixed in a cantilever manner, and a hot air device that blows high-temperature airflow toward the surface of the film fixing plate, characterized in that: The magnetic rotating wheel is arranged to rotate freely around the fixed shaft, and is close to the overhanging end of the film fixing plate, and the circumferential surface of the magnetic rotating wheel is pressed on the film fixing plate by magnetic force, the film supported by the film fixing plate is clamped between the magnetic rotating wheel and the film fixing plate, and the magnetic rotating wheel rotates freely around the fixed shaft along with the movement of the film.

2. The magnetic auxiliary fixing mechanism of the hot air film sealer according to claim 1, characterized in that: The fixed shaft of the magnetic rotating wheel is fixed on the height-adjustable support.

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