Film roll changing device

Abstract

This utility model relates to the field of film winding technology, specifically a film roll changing device, which can reduce the difficulty and labor intensity of roll changing, avoid film waste, and reduce costs. It includes a winding drum, a liftable arc-shaped guide plate and a cutting air blowing seat are arranged above the winding drum, the cutting air blowing seat is equipped with a movable cutter and a fixed air blowing pipe, and the air blowing pipe has an air outlet facing the side of the arc-shaped guide plate.

Description

Technical Field

[0001] This utility model relates to the field of film winding technology, specifically a film winding device. Background Technology

[0002] After the film is blown into shape by the blow molding machine, it is transported through an intermediate conveyor and finally wound up by the winding drum and winding roller. After one roll is wound up, a roll change operation is required. In the traditional operation, it is necessary to manually wrap tape in the opposite direction on the empty winding roller, with the adhesive side of the tape facing outwards. After cutting the film, the film is then stuck together by the adhesive of the tape before being wound up. This is labor-intensive, consumes a lot of tape, and the film stuck together by the tape cannot be used and needs to be removed later, resulting in film waste and increased costs. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a film roll changing device, which can reduce the difficulty and labor intensity of roll changing, avoid film waste, and reduce costs.

[0004] The technical solution is as follows: a film changing device, which includes a take-up drum, characterized in that a liftable arc-shaped guide plate and a cutting air blowing seat are provided above the take-up drum, a movable cutter and a fixedly arranged air blowing pipe are installed on the cutting air blowing seat, and an air outlet is opened on the air blowing pipe facing one side of the arc-shaped guide plate.

[0005] A further feature is that the cutter is connected to a drive electric cylinder; A rotatable air inlet pipe is provided below the winding drum, and one end of the blowing pipe is provided with an air inlet connector that matches the air port on the air inlet pipe. The arc-shaped guide plate is connected to the lifting cylinder; The cutting air-blowing base is connected to an air-blowing lifting cylinder or an air-blowing rotating swing arm; The air intake pipe is connected to the air intake swing arm, and the rotation center of the air intake swing arm is the same as the rotation center of the winding drum.

[0006] With this invention, when a take-up roller has finished winding and needs to be replaced, the cutter on the air-blowing seat cuts the film, and then the air-blowing pipe blows out air. Due to the presence of the arc-shaped guide plate, the airflow will flow along the inner side of the arc-shaped guide plate, thereby adhering the film below to the empty take-up roller, successfully completing the winding, reducing the difficulty of changing rolls and labor intensity, and also preventing film waste and reducing costs. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the present invention in the winding state; Figure 2 This is a schematic diagram showing the air blowing pipe starting to rotate counterclockwise during the roll changing process. Figure 3 This is a schematic diagram showing the state of the film being lifted when the air blowing tube rotates and passes through the empty take-up roller during the roll changing process. Figure 4 This is a schematic diagram showing the descending state of the arc-shaped guide plate, the empty take-up roller, and the cutting air blower after the air blower has rotated into place during the roll changing process. Figure 5 This is a schematic diagram showing the state after the film is cut, with the fully wound take-up roller leaving the take-up drum and the air inlet pipe blowing air towards the arc-shaped guide plate. Figure 6 This is a schematic diagram showing the air blowing tube in its reset state after the membrane cutting is completed. Figure 7 This is a schematic diagram showing the empty take-up roller rotating to the take-up position after the roll change is completed. Detailed Implementation

[0008] See Figure 1 As shown, a film changing device includes a take-up drum 1, with a liftable arc-shaped guide plate 2 and a cutting air blower 3 above the take-up drum 1. The arc-shaped guide plate 2 is connected to a lifting cylinder 4, which can drive the arc-shaped guide plate 2 to rise and fall. The cutting air blower 3 is connected to a blowing rotating swing arm (not shown in the figure), which can swing and rise and fall. In the winding state, the take-up roller is attached to the take-up drum 1 and rotates with the take-up drum 1. The take-up roller has two positions: one is located above the take-up drum 1, with brackets (not shown in the figure, which are the structures built into the traditional main frame) supporting both ends, which can be raised and lowered to move away from or attached to the take-up drum 1. This position is the empty take-up roller loading position, which is the position of the take-up roller 5 in the figure. The other position is the take-up position, located on one side of the take-up drum and attached to the take-up drum. At this time, the two ends of the take-up roller are no longer supported on the brackets, but on the main frame (not shown in the figure, which is the traditional main frame), which is the position of the take-up roller 10 in the figure. The two ends of the take-up drum 1 are installed on the main frame and connected to the drive mechanism to achieve rotation.

[0009] The cutting air-blowing base 3 is equipped with a movable cutter 6 and a fixed air inlet pipe 7. One end of the air inlet pipe 7 is equipped with an air inlet connector 7-1. The cutter 6 is connected to an electric drive mechanism or a pneumatic drive mechanism, which allows the cutter 6 to quickly move to the other end to cut the film.

[0010] A rotatable air-blowing pipe 8 is located below the take-up drum 1. The air-blowing pipe 8 has an air outlet facing the arc-shaped guide plate 2. One end of the air-blowing pipe 8 has an air inlet that mates with the air inlet connector 7-1. The air-blowing pipe 8 is connected to an air-blowing swing arm, the rotation center of which coincides with the rotation center of the take-up drum 1. When the air-blowing pipe 8 rotates to its designated position, the air inlet pipe 7-1 swings downwards, inserting the air inlet connector 7-1 into the air inlet. Air is then supplied to the air-blowing pipe 8 by the air inlet pipe 7, and the air is blown out through the air outlet. 9 in the figure represents the film-pressing rod.

[0011] The roll changing process is as follows: When the take-up roller 10, which is about to be fully wound, needs to be changed, the empty take-up roller 5 is positioned above the take-up drum 1, with a certain distance between them. The pressure rod 9 rises, and the air blowing pipe 8 begins to rotate counterclockwise, passing under the empty take-up roller 5 and lifting the film 11. Then, the empty take-up roller 5 descends and comes into contact with the take-up drum 1. The arc-shaped guide plate 2 descends, leaving a certain gap between it and the take-up roller 5. The cutter 6 and the air inlet pipe 7 also descend, connecting the air inlet pipe 7 and the air blowing pipe 8. Then, the cutter 6 cuts the film. At the same time, the air blowing pipe 8 blows out airflow, blowing the cut film 11 toward the empty take-up roller 5. The film is affected by the airflow flowing along the arc-shaped guide plate 2. With the take-up roller 5 rotating, the film can be smoothly continued to be wound by the empty take-up roller 5. The originally fully wound take-up roller 10 can leave the take-up drum 1 for unloading. The arc-shaped guide plate 2, the cutter 6 and the air inlet pipe 7 are all raised and reset. The air blowing pipe 8 also continues to rotate counterclockwise and reset to its original position. Then, the originally empty take-up roller 5 is transferred to the main frame against the take-up drum 1 to continue to complete the winding.

Claims

1. A film changing device, comprising a take-up drum, characterized in that, Above the winding drum is a liftable arc-shaped guide plate and a cutting air blowing seat. The cutting air blowing seat is equipped with a movable cutter and a fixed air blowing pipe. The air blowing pipe has an air outlet facing the side of the arc-shaped guide plate.

2. The film changing device according to claim 1, characterized in that, The cutter is connected to a drive electric cylinder.

3. The film changing device according to claim 1, characterized in that, A rotatable air inlet pipe is provided below the winding drum, and one end of the blowing pipe is provided with an air inlet connector that matches the air port on the air inlet pipe.

4. The film changing device according to claim 1, characterized in that, The arc-shaped guide plate is connected to the lifting cylinder.

5. A film changing device according to claim 1, characterized in that, The cutting air-blowing seat is connected to an air-blowing lifting cylinder or an air-blowing rotating swing arm.

6. A film changing device according to claim 3, characterized in that, The air intake pipe is connected to the air intake swing arm, and the rotation center of the air intake swing arm is the same as the rotation center of the winding drum.

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