JPS6241003Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper cutting device for an automatic winder that does not require fixing the tail portion with adhesive tape when performing end treatment of a wound roll.

When winding paper into a roll using an automatic winder, once the roll has reached a predetermined diameter, glue is sprayed onto the lower part of the outer periphery of the roll, and the glued surface is rotated toward the paper cutting equipment to remove the paper. An ejector roll installed in the cutting device presses the tail side of the paper against the pasting surface, and a knife is activated to cut the paper.

However, in the conventional device described above, as shown in FIG. 1, the length l from the gluing surface b of the winding roll a after the end treatment to the paper tail end is approximately
Since it is 200mm long, if you leave it as is, there is a risk that the glued side will peel off. Therefore, conventionally the second
As shown in the figure, the end of the tail is fixed with adhesive tape c, but this work has to be done by hand, which is complicated and requires an additional worker, so it is labor-saving. It is also unfavorable from this point of view.

The present invention aims to eliminate the above-mentioned drawbacks of the conventional means and to provide a paper cutting device for an automatic winder that does not require fixing the tail portion with adhesive tape when performing end treatment of a wound roll. This is what I did.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, 1 is a front drum, and 2 is a rear drum that has a suction area 3 and is connected to an appropriate vacuum device. The rolled paper is wound up to form a winding roll 5, and a paper cutting device 6 is disposed above the rear drum 2.

To explain the details of the paper cutting device 6, the paper P
A cutter cylinder 9 is disposed approximately parallel to the extrusion cylinder 7 at the lower end of the beam 8 which can be swung by the extrusion cylinder 7 in a direction parallel to the direction of movement of the cutter cylinder 9.
A knife holder 11 with a knife 10 for cutting paper is attached to the tip of the piston rod 9a.
A roller 12 is pivotally attached to the knife holder 11 so that the knife holder 11 can move on a roller receiver 13 fixed to the beam 8 via the roller 12, and a roller 12 is mounted on the knife holder 11 directly above the knife mounting portion. A paper presser 14 made of an elastic material such as rubber is attached by gluing or screwing, and the winding roll 5 is attached above the knife holder 11 of the beam 8.
The ejector roll 15 that presses the is pivotally mounted. The side of the paper presser 14 facing the winding roll 5 has a substantially flat shape, and the dimension 1 from the tip of the knife 10 to the approximate center of the paper presser 14 is 50 mm or less.

Next, the operation of the present invention will be explained.

When winding the paper P into a winding roll 5, the core 4 is set so as to come into contact with both the front drum 1 and the rear drum 2, and the core 4 is connected to the drum 1,
2 to rotate and wind up the paper P that is continuously fed, and when the winding roll 5 reaches a predetermined diameter, it is rolled from the container 16 disposed below the drum as shown in Fig. 5A. Gluing is performed by spraying glue onto a predetermined position at the bottom of the winding roll 5 through the gap between the front drum 1 and the rear drum 2. After gluing, the winding roll 5 is further rotated by the drum to form a pasting surface 17 as shown in FIG. 5B. Move the paper presser 14 to a position where it can be pressed, and use a predetermined means to move the winding roll 5 to the fifth position.
Place it on the front drum 1 as shown in Figure C.

Once the gluing surface 17 is in place and the winding roll 5 is placed on the front drum 1, the extrusion cylinder 7 is operated to move the beam 8 onto the winding roll 5.
The knife holder 11 is moved to the side of the winding roll 5 by pressing the surface of the winding roll 5 with the ejector roll 15 and operating the cutter cylinder 9.

By moving the knife holder 11 toward the roll 5, the paper presser 14 presses the outermost paper against the gluing surface 17 of the roll 5, and when the knife holder 11 is further advanced, the knife 10
The paper is cut and the winding roll 5 is completed.
At this time, since the paper presser foot 14 is recessed, there is no problem in cutting the paper. Furthermore, since the dimension l from the cut paper tail end to the gluing surface 17 is small, approximately 50 mm or less, the gluing surface 17 will not peel off even if this portion is not fixed with adhesive tape. Furthermore, the cut paper on the rear drum 2 side is attracted and held by the rear drum 2.

It should be noted that the embodiments of the present invention are not limited to the above-described embodiments, and it goes without saying that various changes may be made without departing from the gist of the present invention.

According to the paper cutting device in the automatic winder of the present invention, it is possible to automatically perform the end processing of crimping the rolled roll gluing part and paper cutting, and there is no need to fix the tail part with adhesive tape, so the product Winding can be automated, and various excellent effects can be achieved, such as simplifying the work, reducing the number of workers, and helping to save labor.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the state of the tail part of a conventional winding roll, Figure 2 is an explanatory diagram of the case where the tail part of the winding roll of Figure 1 is fixed with adhesive tape, and Figure 3 is an illustration of the automatic winder of the present invention. An explanatory diagram of the paper cutting device in the apparatus, FIG. 4 is a detailed view of the vicinity of the knife of the paper cutting device in FIG. 3, and FIGS. FIG. In the diagram, 1 is the front drum, 2 is the rear drum, and 6
is a paper cutting device, 7 is an extrusion cylinder, 8 is a beam, 9 is a cutter cylinder, 10 is a knife, 1
1 is a knife holder, 14 is a paper presser, 15 is an ejector roll, and 17 is a gluing surface.

Claims (1)

[Scope of utility model registration request] An ejector roll that presses the surface of the winding roll is attached to a swingable beam that can approach and move away from the winding roll, a knife holder that can move close to and move away from the winding roll is attached to the beam, and the knife holder a presser disposed upstream of the ejector roll in the paper feeding direction and presses the outermost paper against the gluing surface of the winding roll; A paper cutting device for an automatic winder device, characterized in that a knife is provided for cutting on the upstream side in a paper feeding direction.