JPH0530688B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention automatically unpacks wrapping paper (wamp) that wraps rolled paper for newspapers, etc., and collects the wrapping paper as waste paper. related to a device for

[Conventional technology]

In newspaper printing, a newspaper roll wrapped in wrapping paper is unpacked and fed to a printing line. This unwrapping work is carried out by tearing the wrapping paper of a cylindrical newspaper roll with a cutter or the like and peeling it off manually. The torn wrapping paper is then folded and collected for use as waste paper.

[Problem to be solved by the invention]

When unpacking newspaper rolls and collecting wrapping paper, a large number of newspaper rolls are supplied within a certain period of time when the printing line is in operation, so workers are always on site to unpack and collect the wrapping paper. You have to wait and work. As described above, although printing technology itself is currently rapidly progressing, the process of feeding printing paper onto a line still relies on manual labor. Therefore, in newspaper printing, which can be said to be a race against time, wasting time on such manual unpacking is a big loss.

Furthermore, similar problems occur not only in newspaper printing but also in printing magazines and other products by supplying rolled paper.

The problem to be solved by the present invention is to enable the most important task in unpacking work, which is to peel the wrapping paper from the web, quickly and without damaging the web.

[Means to solve the problem]

The present invention provides a peeling device that ascends and descends in a substantially vertical direction above the web on a line in which a roll of web packed with wrapping paper is set so that its axis is horizontal, and the peeling device. and a cutter unit that moves up and down independently, and the peeling device includes a pair of squeezing rolls that contact the wrapping paper at two points in the circumferential direction across a line extending perpendicularly from the core of the paper roll. , and an electric motor that drives these squeezing rolls in forward and reverse rotation, and the cutter unit includes a slide cutter that can be inserted between the wrapping paper and the circumferential surface of the web, and a slide cutter that is parallel to the axis of the web. and a drive mechanism that moves the web while being in contact with the circumferential surface of the web in a vertical plane passing through the core of the web, and the slide cutter has a flat slider that slides on the peripheral surface of the web and a drive mechanism that moves the web in a vertical plane passing through the core of the web. It is characterized by having a blade portion with an acute-angled tip.

〔Example〕

Hereinafter, features of the present invention will be specifically explained with reference to embodiments shown in the drawings.

FIG. 1 is a schematic plan view showing a processing line equipped with an unpacking device of the present invention.

In the figure, from the upstream side of the line, a rotary table 1 for setting the web and setting its attitude, a conveyor 2, and a wrapping paper unpacking device 3 are arranged. This wrapping paper unpacking device 3 includes a device that tears and unpacks wrapping paper, a wrapping paper discharge device 4 that pulls out the torn wrapping paper from the line, and a wrapping paper roll that winds up the pulled wrapping paper and collects it as waste paper. The entire system includes a collecting device 5.

A rotary table 1 is used to set a cylindrically wound newspaper roll covered with wrapping paper in a lying state, and set the attitude of the roll using a sensor 1a placed on the side. This sensor 1a can be an illuminance sensor or a color sensor, and detects the winding direction of the wrapping paper printed on the surface of the wrapping paper.
The axis of the paper roll is set to coincide with the running direction of the conveyor 2.

The conveyor 2 carries the paper roll P on the rotary table 1.
The wrapping paper is then transferred to the wrapping paper unpacking device 3 so that its axis does not deviate from the transport direction. FIG. 2 is a front view in the line direction of the wrapping paper unpacking device 3 with the wrapping paper discharge and winding devices 4 and 5 removed, and FIG. 3 is a side view.

As shown in the figure, below the wrapping paper unpacking device 3,
It is equipped with a roll lifter 6 and a wrapping paper Q on the upper part.
A peeling device 7 is provided. The roll lifter 6 is
A pair of paper sheets are arranged with the transport conveyor 2 in between so that the axis thereof is parallel to the axis of the paper roll P. Further, the rotation of these roll lifters 6 is set independently in any direction, and both ends are connected to a lifting device (not shown) such as a cylinder via bearings, so that they can be moved up and down. . That is, as shown in FIG. 2, the roll lifter 6
It is possible to receive and support the circumferential surface of the web P coated with the paper roll P, and to shift it above the conveyor 2. Then, by rotating the roll lifter 6 in the same direction, the web P is rotated around its center, and the tape T adhering the wrapping paper Q is placed directly above. The position of the web P so that the tape T is directly above is set as follows:
This is done by detecting the presence of the tape T with an optical sensor or the like.

In the peeling device 7, a base 7b is suspended from an inverted L-shaped frame 7a. The base 7b is
It is connected to the frame 7a by a link 7c and is raised and lowered by a cylinder 7d that strokes in the horizontal direction. Further, squeezing rolls 8a are provided at the lower ends of arms 8 extending downward from two locations sandwiching the line, and these squeezing rolls 8a are rotationally driven by an electric motor 8b and a chain 8c provided on the base 7b. Furthermore, a cutter unit 9 that is moved up and down by a cylinder 9a is arranged in the center. This cutter unit 9 has two sprocket wheels 10 driven by a chain 9c using an electric motor 9b provided on a base 7b as a drive source.
There are several. A chain 10a is stretched around this sprocket wheel 10 in a direction perpendicular to the line of the conveyor 2. The path plane of this chain 10a is common to the plane containing the axis of the web P as shown in FIG. There is.

Here, a pair of squeezing rolls 8a are arranged with a line in between so that their axes are parallel to the axis of the paper roll P, and as shown in FIG. 2, their rotation directions are opposite to each other. A metal with relatively low frictional resistance is used as the material, and the capacity of the electric motor 8b is selected so that the rotational torque is large. These squeezing rolls 8a
When is rotated in the direction of rotation shown in FIG. 3, that is, in the direction of pulling up the wrapping paper Q, a force is applied to the wrapping paper Q, and the wrapping paper Q is peeled off from the circumferential surface of the web P. This causes wrinkles.

When creating wrinkles on the surface of the wrapping paper Q using such a squeezing roll 8, the cylinder 7d
is activated to extend the link 7c in the vertical direction and push down the base 7b. Thereby, the squeezing roll 8a strongly presses the surface of the wrapping paper Q, and wrinkles can be quickly created in the wrapping paper Q by the rotation of the squeezing roll 8a. Incidentally, wrinkles can also be created in the wrapping paper Q by rotating the squeezing rolls 8a in the same direction and having different circumferential speeds.

On the other hand, a slide cutter 11 provided in the peeling device 7
As shown in Fig. 4, the blade part 1 has an acute-angled tip.
1a and a slider 11b that slides on the paper roll P. Then, the slide cutter 11 lowers the cutter unit 9 using the cylinder 9a, and then the electric motor 9b causes the sprocket wheel 10 to run, thereby moving the slide cutter 11. That is, as shown in FIG. 5, the slide cutter 11 is positioned on the end surface side of the web P and its blade portion 11a is positioned below the wrinkles of the wrapping paper Q, and then the cutter unit 9 is slightly raised to remove the blade portion 11a. Hang the wrinkled part of the wrapping paper Q on it. Then, the electric motor 9b drives the sprocket wheel 10.
Pass and slide 11 of slide cutter 11
While b slides on the circumferential surface of the paper roll P, the blade portion 11b cuts open the wrinkled portion of the wrapping paper Q. The height of the slide cutter 11 is set while detecting the relative height of the cutter unit 9 with respect to the web P using a photoelectric sensor 9d provided at the lower end of the cutter unit 9.

After the slide cutter 11 has cut the entire wrapping paper Q as shown in FIG. 5, the squeezing roll 8a is reversely rotated as shown in FIG. By the rotation of the squeezing roll 8a, the cut portion of the cut wrapping paper Q is divided into two parts. After this operation, the base 7b rises and the squeezing roll 8a and slide cutter 11 are retracted upward to prepare for the subsequent process.

By raising and lowering the squeezing roll 8a in this manner, the state of wrinkles generated on the wrapping paper Q can be varied in various ways. In other words, the force with which the squeezing roll 8a presses the wrapping paper Q can be changed, so even if the properties of the wrapping paper Q vary depending on the material and humidity, the pressing force can be adjusted by setting the level of the squeezing roll 8a. , can create wrinkles of appropriate size.

Further, since the slide cutter 11 has a flat slider 11b that slides on the circumferential surface of the paper web P, the paper web P will not be torn or wrinkled.

The sorted wrapping paper Q is extracted out of the line by the wrapping paper discharge device 4 located on the side of the peeling device 7. As shown in FIG. 7, the wrapping paper discharge device 4 is equipped with a fixed conveyor belt 4a and a tilting conveyor belt 4b.
By setting the wrapping paper Q to the position indicated by the broken line, one end of the wrapping paper Q is grasped and pulled out from the line. The tilting conveyor belt 4b has a cylinder (not shown) connected to the roll 4c at one end via a bearing or the like, and the entire unit can be tilted as shown in FIG. 7 by the operation of this cylinder. structure can be adopted.

When the wrapping paper Q has been removed, the roll lifter 6 is rotated to remove the wrapping paper P as shown in FIG.
is rotated, and the circumferential surface is taped by the taping device 12. This work is done using slide cutter 1.
This is to prepare for the case where the paper roll P is also cut by the sliding action of step 1, and its purpose is to prevent the paper roll P from peeling off when it is transferred to a subsequent process.

After the above operations, the roll lifter 6 is lowered as shown in FIG. 9, the web P is placed on the conveyor 2, and is transferred to the subsequent line.

The wrapping paper discharge device 4 has two conveyor belts 4a and 4b as described above, and the wrapping paper Q is sent to the wrapping paper winding device 5 by the operation of these belts. FIG. 10 is a perspective view schematically showing the wrapping paper winding device 5, in which a winding shaft 5b is rotatably provided on a base 5a.
Pressing roll 5c for pressing the circumferential surface of the wrapped wrapping paper Q to enable winding without loosening.
A pair of . The winding shaft 5b has a rotating shaft structure that is cantilevered with respect to the base 5a, and
As shown in FIG. 11, a slit 5d into which one end of the wrapping paper Q is inserted is cut in the axial direction.

In order to smoothly wind up the wrapping paper Q onto the winding shaft 5b, it is preferable that the fixed conveyor belt 4a is also tiltable as shown in FIG. That is, since the wrapping paper Q is continuously wound up and used as waste paper, a large amount of the wrapping paper Q is collected on the winding shaft 5b. For this reason, in preparation for the increase in the winding thickness of the wrapping paper Q, if the fixed conveyance belt 4a is made tiltable in the direction of the arrow in the figure, the wrapping paper Q can be quickly sent in the direction of the winding shaft 5b. I can do it. After winding up a certain amount of wrapping paper Q, the ends of the wrapping paper Q are taped and the winding shaft 5b is pulled out.
is placed on a trolley 13 and collected as waste paper.

In the above embodiments, a roll paper for newspaper printing was described, but it goes without saying that the apparatus of the present invention can also be used for unwrapping paper rolls for magazines and other printed matter.

〔Effect of the invention〕

In the present invention, by moving the squeezing roll up and down, it is possible to generate appropriate wrinkles in the wrapping paper, and the cutting operation using the slide cutter can be performed quickly, thereby improving work efficiency. In addition, the slide cutter's flat slider cuts the wrapping paper while sliding on the surface of the paper roll like an iron, so it can be fed to the subsequent line without damaging or wrinkling the paper roll. I can do it.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view of the overall layout including the unpacking device of the present invention, Fig. 2 is a front view of the peeling device section as seen in the line direction, Fig. 3 is a side view, and Fig. 4 is a perspective view of the slide cutter. FIG. 5 shows cutting of wrapping paper using a slide cutter. Also,
Fig. 6 is a front view showing how the wrapping paper is sorted after cutting, Fig. 7 is a front view showing how the wrapping paper is removed, Fig. 8 is a front view showing taping of the cut surface of the web, and Fig. 9 is a front view showing the wrapping paper. FIG. 10 is a schematic perspective view of the wrapping paper winding device, and FIG. 11 is a schematic diagram showing the winding of the wrapping paper onto the winding shaft. 1...Rotary table, 1a...Sensor, 2...
Conveyor conveyor, 3...Wrapping paper unpacking device, 4...Wrapping paper discharge device, 4a...Fixed conveyor belt, 4b...
...Tilt conveyor belt, 5...Wrapping paper winding device, 5a
... Base, 5b ... Winding shaft, 5c ... Holder roll, 5d ... Slit, 6 ... Roll lifter, 7
...Peeling device, 7a...Frame, 7b...Base, 7c...Link, 7d...Cylinder, 8...
Arm, 8a...Squeezing roll, 8b...
...Electric motor, 8c...Chain, 9...Cut unit, 9a...Cylinder, 9b...Electric motor, 9c
...Chain, 10...Sprocket wheel,
10a...Chain, 11...Slide cutlet,
11a...blade portion, 11b...slider, 12...
Taping device, 13... Cart, P... Rolling paper,
Q...Wrapping paper.

Claims (1)

[Scope of Claims] 1. A peeling device that moves up and down in a substantially vertical direction above the web on a line in which a roll of web packed with wrapping paper is set so that its axis is in a horizontal position; A cutter unit that moves up and down independently of the peeling device is arranged, and the peeling device has a pair of cutter units that contact the wrapping paper at two points in the circumferential direction across a line segment extending perpendicularly from the core of the paper roll. The cutter unit includes squeezing rolls and an electric motor that drives these squeezing rolls in forward and reverse rotation, and the cutter unit includes a slide cutter that can be inserted between the wrapping paper and the circumferential surface of the web;
a drive mechanism that moves the slide cutter in contact with the circumferential surface of the paper roll in a vertical plane that is parallel to the axis of the paper roll and passes through the core of the paper roll; A wrapping paper unwrapping device for paper rolls, characterized by comprising a flat slider that slides on a surface and a blade portion having an acute-angled tip in the advancing direction.