JPH0435112Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a cutting device that cuts several rolls of paper in the axial direction from the surface of a web.

[Conventional technology and its problems]

Generally, the tip of the roll of paper taken out from the paper storage is fixed with tape, so it cannot be pulled out as it is. The rolls are removed by cutting them in the axial direction.

Conventionally, there has been a method of manually cutting paper rolls using a cutting tool such as a bamboo spatula, but this method has poor workability, and moreover, the above-mentioned cutting method requires cutting into the paper feed section of a machine such as a rotary press. This is dangerous because it is carried out in a set state.

Also, pierce the outer diameter surface of the paper roll with a cutter,
There is also a method of mechanically cutting the paper by moving the cutter in the axial direction of the paper roll, but in this case, if there are irregularities in the axial direction of the outer diameter surface of the paper roll, the cut depth of the cutter changes, so a certain number of rolls cannot be cut. There is a disadvantage that the paper cannot be cut reliably.

[Purpose of invention]

Therefore, this idea solves the above disadvantages,
It is an object of the present invention to provide a paper web surface cutting device that can reliably and efficiently cut a predetermined number of rolls of paper from the surface of the paper web.

[Structure of the idea]

In order to achieve the above purpose, a cutter support frame movable in the radial direction of the web, and a cutter support frame movable in the radial direction of the web, and a cutter support frame arranged around the stationary web and movable in the axial direction of the web; An endless belt is provided at the front part of the cutter support frame on the side opposite to the web, and a part of the cutter support frame protrudes forward from the front surface of the cutter support frame and moves by contact with the web. A fork is arranged on the back of the part of the belt that contacts the web, the fork projects forward from the contact part, a paper entry part is formed on the back side of the fork, and the paper entry part In this paper, a part of the circular cutter that rotates as the belt moves and cuts the paper cut by the fork is exposed.

[Effect]

With the above configuration, the cutter support frame is moved toward the outer diameter surface of the fixed web paper, and the moving table is moved toward the outer diameter surface of the web paper with a part of the belt in contact with the edge of the outer diameter surface of the web paper. When moved in the axial direction, the belt moves due to contact with the web, and this movement rotates the cutter. On the other hand, the fork sticks into the surface layer of the web from the end face, and the paper cut out by the fork is cut by the cutter that rotates in one direction. Therefore, by moving the movable stage from one end of the web to the other end, several rolls of paper can be cut in the axial direction from the surface of the web.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in FIGS. 1 and 2, a long rail 1 is provided on the side of the fixed web L in the axial direction of the web L, and a movable member supported movably along the rail 1 is provided. The stand 2 is threadedly engaged with a feed screw 3 arranged parallel to the rail 1, and is moved in the axial direction of the web L by rotation of the feed screw 3.

One end of a pair of parallel links 4, 4 is connected to the moving table 2, and a cutter support frame 5 supported by the other end of the link 4 is connected to the moving table 2, and a cutter support frame 5 supports the operation of the cylinder 6 supported on the moving table 2. is moved toward the outer diameter surface of the web L.

The cutter support frame 5 includes a pair of side plates 7, and between the side plates 7, a head pulley 8, a guide pulley 9, and a tail pulley 10 are provided from the front, and an endless belt 11 is installed between each of the pulleys 8, 9, and 10. It's being passed around.

In the belt 11, a linear running portion 12 between the head pulley 8 and the guide pulley 9 is located forward of the surface of the cutter support frame 5 facing the web L, and the linear running portion 12 serves as a positioning reference surface for the web L. There is.

A fork 13 is arranged behind this reference surface 12.

The fork 13 is made of a plate with a thin tip and a support arm 14 is provided at the rear. A pair of engaged adjustment bolts 15 are rotatably supported by a cutter support frame 5.

Therefore, by rotating the adjustment bolt 15, the fork 13 moves in the radial direction of the web L, and the relative position with respect to the reference surface 12 can be adjusted.

In addition, the back of the fork 13 and the cutter support frame 5
A paper intrusion part 16 is formed between the surfaces facing the paper roll L, and a circular cutter 17, which partially faces the paper intrusion part 16, is connected to the tail pulley 1.
It is non-rotatably mounted on the pulley shaft 10' of No. 0.

Therefore, when the tail pulley 10 rotates due to the movement of the belt 11, the cutter 17 also rotates. A part of the outer periphery of the cutter 17 fits into a fitting part 18 provided on the back surface of the fork 13.
The paper cut out in step 3 is cut.

As described above, since the cutter 17 is rotated by the movement of the belt 11, it is preferable to use a timing belt as the belt 11 and to use a pulley corresponding to the belt.

The cutting device shown in the example has the above structure,
For example, this cutting device is installed around the paper roll located at the paper splicing preparation position among the three paper rolls supported by the three-pronged arm of a rotary printing press, and cuts several rolls of paper from the surface of the paper roll at the preparation position. is cut in the axial direction.

Now, when the cutter support frame 5 is moved toward the stationary web L by the operation of the cylinder 6, the linear traveling portion 12 of the belt 11 comes into contact with the outer diameter surface of the web L.

In this state, when the feed screw 3 is rotated and the moving base 2 is moved in the axial direction of the web L, the belt 11 moves due to contact with the web L, the cutter 17 rotates, and the fork 13 moves the web. Push it into the side of L. Since the fork 13 moves in the axial direction of the paper roll L while entering the inside of several rolls of paper from the surface of the paper roll L, the fork 13 scrapes several rolls of paper.
The cut paper is cut by a cutter 17. Therefore, by moving the cutter 17 from one end of the paper roll L to the other end, several rolls of paper are cut in the axial direction.

Since the fork 13 moves in the radial direction of the paper roll L by the rotation of the adjustment bolt 15, the number of sheets to be cut can be arbitrarily adjusted by adjusting the position of the fork 13.

〔effect〕

As described above, this invention moves the cutter support frame toward the web, and moves the moving base in the axial direction of the web while keeping a part of the belt in contact with the web, so that the fork can move the web toward the web. Since the cutter pierces the surface layer of the end surface and cuts the required number of sheets of paper with the fork, several rolls of paper can be cut in the axial direction from the surface of the web.

In addition, the belt, which is partially in contact with the paper roll, moves due to contact with the paper roll as the moving table moves, and the cutter rotates due to the movement of the belt and cuts the paper, so the paper is securely cut. , and can be cut smoothly.

Furthermore, since the paper cut with a fork is cut with a cutter, the required number of sheets of paper can be reliably cut even if the surface of the paper roll is uneven.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the cutting device according to the invention, FIG. 2 is a front view of the same, FIG. 3 is an enlarged sectional view of the cutter support frame of the above, and FIG. FIG. 4 is a partially cutaway side view of FIG. 3; 2...Moving table, 5...Cutter support frame, 11...
... Belt, 12 ... Straight running part, 13 ... Fork, 15 ... Adjustment bolt, 16 ... Paper entry part, 7 ... Cutter, 18 ... Fitting part.

Claims (1)

[Claims for Utility Model Registration] (1) A cutter support frame that is movable in the radial direction of the web, and a cutter support frame that is movable in the radial direction of the web, on a movable table that is arranged around the stationary web and is movable in the axial direction of the web. an endless belt that partially protrudes forward from the front part of the cutter support frame and moves by contact with the web; A fork is disposed on the back of the contact portion of the belt against the web, the fork is made to protrude forward from the contact portion, a paper entry portion is formed on the back side of the fork, and A surface layer cutting device for web paper, in which a part of a circular cutter that rotates by the movement of the belt and cuts the paper cut by the fork faces the paper entry portion. (2) The paper web surface layer cutting device according to claim 1, wherein the fork is provided so that its position can be adjusted in the radial direction of the paper web.