JPH0718665Y2 - Roll end tape applying device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is for applying an adhesive tape to the edge of a web take-up roll, which is one step of the web take-up work generally performed in paper mills and the like. The present invention relates to the detection of the paper edge of a web take-up roll and its tape application device.

[Conventional technology]

Referring to FIG. 4, an outline will be given of the paper edge automatic tape attaching work of the take-up roll in the web take-up device (hereinafter referred to as winder) generally used in the paper factory.
First, the take-up roll 01 formed on the take-up drums 15 and 16 of the winder has a paper cutting knife 18 protruding from the inside of the dump bar 17 at the time of kicking by the dump bar 17, so that the paper 08 is aligned linearly in the roll axial direction. After being cut, it rolls out from the winding drum 16 and then rolls in to a roll rotating device 12 which is usually composed of two rolls 19 and 20. On the roll rotation device 12, a paper cutting point 02 (a winding end described in the present invention, which is hereinafter referred to as a paper end because it is described based on a paper web), that is, a post-process The paper edge 02 is attached to the take-up roll 01 so as not to hinder the handling of the take-up roll 01.
The sticking of the paper edge 02 is usually performed using an adhesive tape, but an outline of the automatic tape sticking device, which is put into practical use based on the automated method filed in Japanese Patent Application No. 58-231874, The cross beam 09 over the entire width of the take-up roll 01, which was waiting at the predetermined position 21 before the take-up roll 01 moved into the roll rotation device 12.
After moving into the take-up roll 01, it descends and presses the take-up roll 01 with the tape retainer 22 at the position 14 corresponding to 12 o'clock of the timepiece as shown (solid line). Since the adhesive tape 23 is previously inserted between the tape retainer 22 and the take-up roll 01 so that the adhesive surface is on the take-up roll 01 side, the tape retainer 22 is wound with a certain pressure. By pushing the tape application unit 11 supported by the cross beam 09 over the entire width of the winding roll 01 while pressing it against 01, the adhesive tape can be attached to the entire width of the winding roll 01, that is, the entire width of the paper. .

When applying the tape as described above, first, take-up roll
A step of rotating the take-up roll 01 in the direction of the arrow 13 is necessary in order to bring the paper end 02 to be taped to the position 14 of 01, and the rotation amount of the take-up roll 01 is the position of the paper end 02 position. Therefore, recognizing the position of the paper edge 02 without visual inspection is one of the deciding factors for automation.

As a means for detecting the position of the paper edge 02, Japanese Patent Application No. 58-231874
Method, that is, when cutting the paper on the take-up roll 01 in advance, a mark 25 is attached to the vicinity of the paper edge 02 with a spray gun 24 for painting, etc. Means for detecting with the detector 26 such as a photoelectric switch,
Further, in order to achieve a cheaper and cleaner device than this, as shown in FIG. 5, while rotating the take-up roll 01 in the direction of the arrow 13, the air jet ejected from the air injector 27.
Apply 28 to the surface of take-up roll 01 to
However, when the paper 08 passes under the air ejector 27, the paper 08 is floated up and a commercially available photoelectric sensor 04 provided near the air ejector 27 is used.
For example, a means for detecting the lifted paper edge 02 is known.

[Problems to be solved by the device]

The conventional paper edge detection technology described above has the following problems to be solved.

(1) Since the means shown in FIG. 4 uses a spray gun for painting, there is a risk that the paper 08 and the machine body will become dirty.

(2) In the means shown in FIG. 5, when the basis weight of the paper or the rigidity of the paper changes, the floating amount of the paper edge becomes insufficient, or the air flow rate or the air pressure is used to solve this insufficiency. There is a problem that the paper 08 flutters below the sensor 04 in the vertical direction, that is, in the direction of the arrow 29, resulting in erroneous detection. Along with this, there is a limit to full automation of sticking.

[Means for Solving the Problems]

The present invention solves the above problems by using a suction device provided above the web take-up roll and capable of previously sucking the outermost paper of the web take-up roll, and the suction device is the most effective part of the web take-up roll. Rotating means for rotating the web winding roll around its roll axis in a state where the outer layer paper is sucked, and the winding end of the outermost layer of the web winding roll rotated by the rotating means has a predetermined distance near the suction device. And a tape adhering unit for advancing the winding end of the paper detected by the detecting device in the width direction of the paper end and linearly adhering the tape over the entire width of the paper. The present invention aims to provide a roll winding end tape applying device characterized by the following.

[Action]

Since the present invention is constructed as described above, it has the following effects. That is, when the web take-up roll is rotated while the suction device sucks the paper, the winding end (paper end) always reaches a fixed position.
If you monitor it with a detection means, you can always catch the paper edge that has arrived at a fixed position with the accuracy of fitting it in the center of the narrow tape width, so if you set a tape sticking unit that sticks adhesive tape at that position, you can set the paper edge. The adhesive tape can be attached automatically.

Further, since the tape application unit travels in the width direction of the paper edge and applies the tape in a linear shape over the entire width of the paper, the tape is applied steplessly in sequence, and there is no opportunity for bubbles to intervene, and Since the sticking unevenness does not occur, the sticking strength or discontinuity does not occur at the edge of the paper, and since it is linear, local wrinkles, distortion, and peeling are unlikely to occur on the tape and paper.

Also, since there is no stress unevenness, peeling over time, wrinkles,
No distortion (circular unevenness) etc. will occur.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.

The same parts as those in FIGS. 4 and 5 are designated by the same reference numerals, and the description thereof will be omitted except when necessary. In these figures, 03 is an air suction type adsorber used to adsorb the paper 08 as described later. Reference numeral 04 is a paper edge detection sensor including a photoelectric switch, and an object existing in the detection range 06 on the detection position 05, for example, the paper edge
It is configured to be able to detect 02. 07 is the outermost layer of the take-up roll, 08 is a holding plate for preventing lifting, 09 is a cross beam across the take-up roll 01 in the width direction (roll axis direction), and 10 is for attaching the apparatus of this embodiment to the cross beam 09. It is a bracket. In addition to this, the cross beam 09 is provided with the tape sticking unit 11 shown in FIG. 4, and after detecting and grasping the paper edge 02, the tape sticking unit 11 is located at the paper edge 02 portion in the same manner as the conventional example. It is configured to attach adhesive tape to.

Next, the operation of this embodiment will be described.

After the take-up roll 01 moves into the roll rotating device 12, the cross beam 09 descends, and as shown in FIG. 1, the suction device 03, the paper edge detection sensor 04, and the pressing plate 07 also descend and the take-up roll 01 moves. The relationship is directly above. Next take-up roll 01
While the roll is rotated in the direction of arrow 13 by the roll rotating device 12, the outermost paper 08 of the winding roll 01 is sucked by the suction device 03. At this time, until the paper edge 02 passes under the pressing plate 07, the outermost paper 08 of the take-up roll 01 at the detection position of the paper edge detection sensor 04 is detected as shown in FIG. It is outside the detection range 06 of the sensor 04. Therefore, at this time, the paper edge detection sensor 04 never outputs a detection signal, so that erroneous detection can be prevented. Furthermore, the winding roll 01 is an arrow
When the paper edge 02 continues to rotate in 13 directions and passes under the pressing plate 07, the paper edge 02 is sucked up by the suction device 03 and rises as shown in FIG. Paper 08 enters the detection range 06 of the paper edge detection sensor 04. From this point, the paper edge detection sensor 04 outputs a detection signal, and the paper edge 02 is indicated by an arrow.
It can be seen that the output of the detection signal is stopped when the paper advances in the direction of 13 and passes the detection position 05 of the paper edge detection sensor 04, whereby the paper edge 02 has passed the detection position 05. afterwards,
The take-up roll 01 is moved by the arrow 13 at a known distance from the detection position 05 to the position 14 of the take-up roll 01.
The paper edge 02 is stopped at the position 14 of the take-up roll 01 by rotating the paper edge 02 in the direction of by any known control means.

Next, as described above, the automatic tape application is performed by running the tape application unit 11 in the width direction of the winding roll 01, that is, in the direction perpendicular to the paper surface of FIG.

As shown in FIG. 3, by attaching a net 31 or the like to the suction port 30 of the suction device 03, the paper 08 is sucked into the suction port 30,
It is possible to prevent that the desired flat state of the paper 08 as shown in FIG. 2 cannot be maintained, that is, the paper 08 becomes concave as shown in FIG. However, if it is determined that it is not necessary to provide the net 31 based on the relationship between the suction force of the suction device 03 and the rigidity of the paper 08 that is the suction target, the net 31 may not be provided. or,
The holding plate 07 for holding the paper edge 02 does not necessarily have to be used.

The adsorber 03 is not limited to the configuration shown in FIGS. 1 and 2. The paper edge detection sensor 04 is not limited to the photoelectric switch, and for example, a micro switch or a limit switch having a mechanical work piece may be used, or other means such as a purpose may be used. Good.

As described above, according to the present embodiment, the paper is held at a certain height by the suction device and moved, and the paper surface is always caught and detected within the sensing range of the paper edge detection sensor, so that the paper edge can be reliably captured at a fixed position. By applying this with a tape applying unit, it is possible to achieve complete automation of applying paper edge adhesive tape.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

(1) Since the end of the web (paper) is kept at a fixed position (constant height) by the suction device and detected by the detection means, the end of the web is always detected at a fixed position, and automation of adhesive tape attachment is achieved.

(2) Since no paint is used to detect the edge of the web, the paper and machinery are not contaminated.

(3) Accurate web edge detection and paper edge adhesion can always be achieved without being affected by the type of web or the winding state.

(4) Since the tape applying unit moves the paper edge in the width direction of the paper and applies the tape in a linear shape over the entire width, so-called stress unevenness does not occur on the tape and corresponding paper, and local wrinkles and distortions occur. No peeling occurs.

(5) As described in (4) above, stress unevenness does not occur in tape sticking on the edge of the paper, so local peeling due to deterioration over time does not occur, and moist outside air penetrates from the peeling portion for a long period of time to cause wet strain ( There will be no problems such as local unevenness) or discoloration resulting in extremely reduced product value.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a conceptual view of a state in which the apparatus of the above embodiment detects the paper edge 02, and FIG. 3 is one of the components of the above embodiment. Fig. 4 is a perspective view of a suction device 03 with a net 31 added, Fig. 4 is an explanatory view (side view) of the pasted state of a paper edge adhesive tape which also serves as a conventional example, and Fig. 5 is a side view of another conventional example. The figure is a conceptual diagram of a defect that may be induced by the adsorber 03 having no mesh. 01 ... Winding roll, 02 ... Paper edge, 03 ... Adsorber, 04 ... Paper edge detection sensor, 07 ... Press plate, 08 ... Paper, 09 ... Cross beam, 11
… Tape application unit, 12… Roll rotation device.

Claims (1)

[Scope of utility model registration request] 1. An adsorber provided above the web winding roll and capable of preliminarily sucking the outermost layer paper of the web winding roll, and the adsorber holds the outermost paper of the web winding roll. Rotating means for rotating the web take-up roll around the roll axis in a sucked state, and the winding end of the outermost layer of the web take-up roll rotated by the rotating means has arrived at a predetermined position near the adsorber. And a tape adhering unit for advancing the winding end of the paper detected by the detecting means in the width direction of the paper end and adhering the tape linearly over the entire width of the paper. A roll end tape applying device characterized by: