JPH06219610A - Roll paper manufacture - Google Patents

Abstract

PURPOSE:To prevent a web stretched between a web rolling body and a rolling position from tensioning without causing hardly any tension to the web and in the condition of the web rolling body pushed out to its tentative receiving position when the web rolling body is pushed out from the rolling position toward the tentative receiving position. CONSTITUTION:A web T3 drawn out from an original roll is rolled around a rolling shaft U in the rolling position and a web send-out operation is stopped once when the web T3 is rolled round the rolling shaft U by a specified length. Thereafter, when a web rolling body X rolled at the tentative receiving position is pushed out from the rolling position to the tentative receiving position, the web stretched between the rolling position and the tentative receiving position is cut as carrying out the web send-out operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll paper manufacturing method for manufacturing roll paper used for, for example, toilets.

[0002]

2. Description of the Related Art Toilet roll paper is manufactured by using, for example, a roll paper manufacturing apparatus as shown in FIG. In the roll paper manufacturing apparatus shown in FIG. 9, the strip-shaped web T fed from the web roll S by the web feeding device 1 is wound around the winding shaft U by the web winding device 4 and the predetermined web is obtained. After being wound for a length (forming the web winding body X), the web feeding device 1 and the web winding device 4 are stopped, and the web winding body X at the winding position is wound by the winding body pushing device 6. Is pushed out to the temporary receiving device 9 while the web is continuous, and the web stretched between the winding position and the temporary receiving position is cut by the web cutting device 7 to remove the web winding body X from the web. It is designed to be cut off to produce roll paper.

The wound-body pushing-out device 6 is of a type in which a pressing portion 62 is swung back and forth by a cylinder 61. When the cylinder 61 is contracted, the pressing portion 62 is moved through the winding shaft U. The web winding body X at the winding position can be pushed forward. then,
The web winding body X moves to the temporary receiving position side while rolling on the table 16 (while unwinding the web on the web winding body side).

In FIG. 9, reference numeral 5 is a take-up shaft supply device, and the take-up shaft supply device 5 is located at the web winding position.
Are sequentially supplied one by one. Reference numeral 8 is a gluing device, and the gluing device 8 attaches the gluing to the vicinity of the web end on the side of the web winding body X that is cut by the web cutting device 7. Reference numeral 45 is a rider roll forming a part of the web winding device 4,
The rider roll 45 is above the two take-up rolls 41 and 42 and comes into contact with the web winding body to take up the web when the web is taken up, and the web take-up action at the take-up position is completed (web take-up). When the picking device 4 is stopped), it retracts upward as shown by the chain line. Further, the roll paper separated from the web at the temporary receiving position is one roll 92 of the temporary receiving device 9.
Is discharged to the conveyor 17 by being moved downward.

[0005]

By the way, in the roll paper manufacturing method performed by using the roll paper manufacturing apparatus shown in FIG. 9, the web winding body X is extruded after the web winding is completed at the winding position. When it is pushed out by the pressing portion 62 of the device 6, the web winding body X is pushed forward as it is. However, at that time, although the web winding body X can be unwound by rolling, a large tension is instantaneously generated on the web by the forward pushing action on the web winding body. Thus, when a large tension is generated in the web during extrusion of the web winding body, for example, a material having a weak breaking strength against the tension, an extremely thin web, a perforated web, or the like is used. There is a problem that the web may be broken by the tension generated at the time of extrusion. Further, in the roll paper manufacturing method using this roll paper manufacturing apparatus, when the web winding body X is pushed out from the winding position to the temporary receiving position, as shown in FIG. The next winding shaft U is supplied to the upper part of the web between the take-up rolls 41 and 42, but until the web is cut off, a considerable amount of web Ta exists between the web winding body X in the temporary receiving position and the right-hand take-up roll 41. The winding shaft U, which is stretched in a tensioned state and is placed on the web Ta in the tensioned state, is unstable until the rider roll 45 moves downward and presses the winding shaft U downward. There is also a problem that sometimes the winding shaft U rolls in the front-back direction and is displaced (displaced from the winding position). In particular, when a lightweight paper tube is used as the take-up shaft U, the bending margin of the web due to the weight of the take-up shaft becomes small and the take-up shaft is easily displaced. If the next take-up shaft U comes off the take-up position, the next web take-up operation cannot be performed normally.

In view of the problem of pushing out a web winding body in the above-mentioned conventional roll paper manufacturing apparatus, the present invention is such that when the web winding body is pushed out from the winding position to the temporary receiving position side, almost no tension is applied to the web. It is possible to prevent the tension of the web stretched between the web winding body and the winding position when the web winding body is pushed to the temporary receiving position. It is intended to propose a roll paper manufacturing method.

[0007]

SUMMARY OF THE INVENTION A roll paper manufacturing method according to the present invention uses a web winding device in which a web is fed from a raw roll by a web feeding device and a web winding portion is formed between two winding rolls. The unwound web is wound around a take-up shaft, and when the web is wound around the take-up shaft by a predetermined length, a web feeding device such as a web unwinding device and a web winding device is temporarily turned on. Stop it,
The web is wound at the winding position from the winding body extrusion device, and the web is continuously extruded from the winding position to the temporary receiving position, and is stretched between the winding position and the temporary receiving position. When using the roll paper manufacturing apparatus for manufacturing the roll paper by cutting the web is a web cutting device, when pushing the web winding body wound at the winding position to the temporary receiving position side, It is characterized in that the driving device is driven while being driven in the web feeding direction for a predetermined short time.

[0008]

In the roll paper manufacturing method of the present invention, when the web is wound around the winding shaft by a predetermined length at the winding position, the driving device for feeding the web is temporarily stopped and then the driving device is operated. While re-driving for a very short time, the web winding body at the winding position is pushed out from the winding position to the temporary receiving position while the web is continuous.
The web winding body is slackened at the same time as the web winding body is pushed out from the winding position, and tension is not generated in the web when the web winding body is pushed out. Further, as described above, the web stretched between the winding position and the temporary receiving position is
Due to the slack, the take-up shaft to be supplied onto the web between the take-up rolls at the take-up position can accurately take up the take-up shaft even if the take-up shaft has a slight weight. It comes to fit in a predetermined position (valley) between the take-up rolls.

[0009]

As described above, according to the roll paper manufacturing method of the present invention, when the web winding body formed at the winding position is pushed out to the temporary receiving position side, at the same time as the pushing operation, the web is fed in the feeding direction. Since the web is sent out within a predetermined small length range, almost no tension is generated on the web when the web is being pushed out, and therefore the web is not damaged by the pushing operation of the web. . Further, when the web winding body is pushed out to the temporary receiving position, the web stretched between the temporary receiving position and the winding position has a slack, so that the web between the winding rolls is slackened. The take-up shaft supplied to the housing can be accurately accommodated at a predetermined position (valley) between the two take-up rolls, and the take-up shaft is prevented from being displaced, which ensures an automatic operation. .

[0010]

EXAMPLES The roll paper manufacturing method of the embodiment of the present invention will be described below. The roll paper manufacturing method of this embodiment is carried out using the roll paper manufacturing apparatus shown in FIGS.

The roll paper manufacturing apparatus shown in FIGS. 1 to 6 is for manufacturing roll paper for toilets, for example, and is a web feeding device for feeding a strip-shaped web T ₁ from an appropriately wide raw roll S. In order to divide the device 1, the perforation processing device 2 that sequentially perforates the web T ₁ fed from the original roll S at a predetermined length interval, and the perforated web T ₂ into product width product width divisions. Of the slitter device 3, a spray device 14 for spraying a liquid at the winding position to the web winding start end within a predetermined small length range, and a web T ₃ divided into product widths at the winding position. A web winding device 4 for winding around U (see FIG. 7 for details), and a winding shaft for sequentially supplying the winding shafts U to the winding position of the web winding device 4 one by one. A charging device 5, and the wound body extrusion device 6 for extruding the web windings X formed by winding the web T ₃ of a predetermined length around the take-up shaft U at the winding position from the winding position, winding Web roll X pushed out from the take-up position
A temporary receiving device 9 for temporarily holding the web winding body 7, a web cutting device 7 for separating the web winding body X held at the temporary receiving position from the web T _3, and a paste on the cut end portion of the web winding body side. A gluing device 8 for attaching the web, and the web feeding device 1,
A perforation processing device 2, a slitter device 3, and a drive device 10 for simultaneously driving the web winding device 4 are provided.

As the original roll S used in this roll paper manufacturing apparatus, for example, a web having a wide web about 16 times the product width is wound.

The drive unit 10 uses a power transmission mechanism 12 such as a pulley and a belt or a sprocket and a chain to transmit power from a single motor 11 (with a brake) to the web feeding device 1 and the perforation processing device. 2 and the slitter device 3 and the web winding device 4 at the same time so that these devices (1, 2, 3, 4) can be simultaneously driven and stopped.

The web feeding device 1 feeds the web T ₁ by bringing the belt 1a, which is driven to circulate, into contact with the outer peripheral surface of the original fabric roll S to rotate the original fabric roll S.

The perforation processing device 2 includes a rotary blade roll 21.
When the rotary blade provided on the fixed blade 22 comes into contact with the fixed blade provided on the fixed blade roll 22, a perforation is formed over the entire width of the web T ₁ .

The slitter device 3 divides the perforated web T ₂ into product widths (for example, about 114 mm for toilet roll paper) in the width direction. The web T passed through the slitter device 3
₃ is supplied to the winding position side in a flat state in the state of being divided.

The spray device 14 is adapted to spray the liquid onto the web winding start end until the web winding start end is wound around the winding shaft U an appropriate number of times (for example, about 3 to 5 times). . In the vicinity of the web winding start end, which is wet with the liquid, the hydroxyl groups (OH groups) in the cellulose of the web are changed and the cellulose molecules are hydrogen-bonded, and the webs that are polymerized inside and outside are bonded to each other. Like Then, when the water content dries, the web-polymerized portions that have been wetted with the liquid are bound to each other to form a relatively hard cylindrical shape. The roll paper manufacturing apparatus of this embodiment manufactures a web winding body Y with a take-up shaft as shown in FIG. 7, and the web winding body Y with a take-up shaft is used for producing the roll paper. The take-up shaft U is removed by a device different from the device, and finally the coreless roll paper is obtained. At that time, the hardness of the center hole of the roll paper required for the coreless roll paper is set to the spray device 14 described above. Can be achieved by liquid wetting by means of (drying later).

The web winding device 4 includes two winding rolls 41 and 42 which are juxtaposed side by side with an appropriate small interval in the front and back, and a web winding body which is above the both winding rolls 41 and 42 and which holds the web winding body from above. While having a rider roll 45 that performs a winding action. The web take-up device 4 is arranged so that the two take-up rolls 4 in FIG.
1, 42 and the rider roll 45 are rotated counterclockwise, respectively, so that the web winding body is rotated clockwise while the web winding body is rotated right at the winding position.

The take-up shaft supply device 5 is a vertically moving type elevator using a cylinder through a rotor 52 which sequentially sends out the take-up shafts U, U, ... Stored in a storage section 51 one by one. The winding shaft U is transferred to the hook 53, and while the winding shaft U is placed on the lifting hook 53, the winding shaft U is lowered from the upward movement position shown in FIG. 1 to the downward movement position shown in FIG. It acts so as to be in the vicinity of the front portion of the pressing portion 62 of the pushing device 6. In this embodiment, the winding shaft U used is as shown in FIG. 7 (this winding shaft will be described later).

The winding body pushing-out device 6 advances the pressing portion 62 by the expansion operation of the cylinder 61, and the web winding formed by the pressing portion 62 via one winding shaft U at the winding position. The rotating body X is pushed forward. When the winding body pushing device 6 is operated, the web winding body X at the winding position is pushed to the temporary receiving position of the temporary receiving device 9 while rolling on the table 16.

The web cutting device 7 moves the blade 72 downward by the extension operation of the cylinder 71 to simultaneously move each web T ₃ (for example, divided into 16) stretched between the temporary receiving position and the winding position. It is designed to be cut.

The gluing device 8 is, like the web cutting device 7, for adhering the gluing adhered to the brush 82 to the upper surface of each web T ₃ by the extension operation of the cylinder 81.
The cylinder 81 of the gluing device 8 is configured to expand and contract in two stages. The brush 82 has an upper standby position, an intermediate position in contact with the web surface, and a lower position to be inserted into the sizing tank 83. Each of the three positions can be temporarily stopped.

The temporary receiving device 9 has two rolls 91 and 92, which are spaced apart from each other by a predetermined distance in the front and rear.
The web winding body X can be placed between the first and the second rolls 92. Each of the rolls 91 and 92 can be slowly rotated in the web winding direction by a motor 93 of a system different from the driving device 10 in a state where the web winding body X is placed. Further, the rear roll 91 can be rotated upward by a cylinder (not shown) about the front roll 92, whereby the separating roll placed between the two rolls 91, 92 is separated. The completed roll paper Y can be discharged onto the transport conveyor 17.

The web feeding device 1, the perforation processing device 2, the slitter device 3, the web winding device 4, the winding shaft supply device 5, the winding body pushing device 6, the web cutting device 7, and the gluing device 8 are used. The temporary receiving device 9 and the driving device 10 may basically have the structures conventionally used.

As shown in FIG. 7, the winding shaft U used in this embodiment has a large number (for example, 16) outside one common shaft V.
The individual cylindrical cores Q, Q ...
Caps (retaining members) on both ends of the common shaft V
It is formed by fitting W ₁ and W ₂ . In FIG. 7, the right-side cap W ₁ is fixed to the common shaft V, while the left-side cap W ₂ is detachable from the common shaft V. Then, if the left cap W ₂ is separated, the respective cores Q, Q, ... Can be inserted into and removed from the common axis V. The winding shaft U has a common shaft V and winding cores Q,
Each core Q, Q ... Is guided to the winding position with Q .. (16 pieces) externally fitted and caps W ₁ and W ₂ fitted to both ends of the common shaft V, respectively. Each divided web T ₃ , T ₃
.. is supplied to a position that exactly corresponds to.

In the roll paper manufacturing method of this embodiment, the roll paper manufacturing apparatus shown in the drawing is used. The roll paper manufacturing method will be described. First, when the first operation is started, the web from the original roll S is passed through the perforation processing device 2 and the slitter device 3, respectively, and the webs T ₃ , T ₃ · are divided by the slitter device 3 into product widths.・ The tip of (see FIG. 3) is wound around the outside of each winding core Q of the winding shaft U, respectively. Then, in this state, the liquid is sprayed from the spray device 14 toward the web winding start end portion for a very short time, and the drive device 1
When 0 (motor 11) is operated, the web transfer device 1, the perforation processing device 2, the slitter device 3, and the web winding device 4 are simultaneously driven by the power transmission mechanism 12, and the web supply device 1 drives the raw material. web T ₁ is fed out from the roll S, perforation is performed on the web T ₁ by perforation forming apparatus 2, the web T ₂ in the slitter apparatus 3
Are divided into product widths, and the respective webs T ₃ , T ₃ ... Separated by the slitter device 3 into product widths are respectively taken up by the take-up shaft U.
The outside of each core Q, Q ... Then, as shown in FIG. 2, when the web T ₃ is wound by a predetermined length, the motor 11 is temporarily stopped by a signal from a counter device (not shown), and the rider roll 45 is shown by a chain line (FIG. 2). 4 and FIG. 5, the wound-body pushing-out device 6 is actuated, and the pressing portion 62 is moved.
The web winding body X located at the winding position via the winding shaft U by
Is extruded to the temporary receiving device 9 portion (temporary receiving position) while keeping the web continuous. At this time, the web winding body X is
The web T ₃ wound on the web winding body side is unrolled and rolled on the table 16 to reach the temporary receiving position.

By the way, in this roll paper manufacturing method, at the same time as the operation of the winding body pushing device 6, the driving device 10 is operated.
The (motor 11) is operated in the web feeding direction for a very short time (for example, about 0.3 seconds), and the web feeding device 1, the perforation processing device 2, the slitter device 3, and the web winding device 4 are each in a small length range. Just drive. At this time, in the web winding device 4 part, the winding roll 4
For example, 1 rotates about 1/4 rotation to make the web T ₃ 3-4c.
Feeds forward by a length of about m.

In this way, if the drive unit 10 is operated for a predetermined short time (0.3 seconds) at the same time as the operation of pushing out the web winding body X by the winding body pushing device 6,
The web winding body X by the pressing portion 62 of the winding body extrusion device 6
Simultaneously with the pressing operation of, the web T ₃ is fed out within a predetermined small length range, and when the web winding body is pushed out, almost no web tension is generated on the web T ₃ . Therefore, even in the case of the web T ₃ in which perforations for cutting are provided in the web and the breaking width is considerably reduced with respect to the tension in the length direction of the web as in this embodiment, the web is cut into perforations. The web is not damaged by the pushing operation of the web winding body X.

Further, when the web winding body X is pushed out from the winding position, the next winding core U is placed on the web T _{3 at the} winding position.
It is supplied above, but as described above, the winding body extrusion device 6
By driving the driving device 10 at the same time as the pushing-out operation by ( ₃₎ , the web T ₃ stretched between the winding position and the temporary receiving position can sag (reference numeral Ta in FIG. 4). Thus, when the web T ₃ between the winding position and the temporary receiving position is slackened, the resistance due to the web tension disappears, and the weight of the winding shaft U supplied to the winding position is reduced by the weight of the web. (Ta part) is pushed down and both winding rolls 4
It can be reliably accommodated in the web winding predetermined position (valley) between the first and the second positions (state of FIG. 5). In the housed state of the winding shaft U at the winding position, the winding shaft is moved by the winding roll 4
Since the winding shaft U is located in the valley between the first and the second winding positions, the winding shaft U is not displaced in the front-rear direction.

When the web winding body X is pushed out to the temporary receiving position with the web kept continuous, as shown by the chain line in FIG. 5, the brush 82 of the gluing device 8 and the blade 72 of the web cutting device 7 are respectively pushed. The web T ₃ stretched on the table 16 is moved downward and cut, and at the same time, the adhesive is attached to the vicinity of the cut end on the web winding body side. Subsequently, the rolls 91 and 92 of the temporary receiving device 9 are rotated in the web winding direction, so that the glued portion at the end of the web is attached to the outer peripheral surface of the web winding body. Then, the roll paper Y at the temporary receiving position is discharged from the temporary receiving position onto the conveyor 17 (FIG. 1) by moving one roll 91 upward as shown in FIG. On the other hand, the other cut end of the web (divided) accurately corresponds to each winding core Q, Q ... (Figs. 3 and 7) of the next winding shaft U supplied to the winding position. Then, each of them is rewound and then pressed by the rider roll 45, and then the spray device 14 is pressed.
The web winding operation similar to the above is performed by spraying the liquid for a very short time and operating the drive device 10.

The web winding body Y with a take-up shaft (FIG. 7) discharged onto the conveyer 17 is removed from the web around the winding core Q after removing one cap W ₂ by a device (not shown). Each web winding body P, P ...
Is removed from the common shaft V and is in a single row on the conveyor 17 as shown in FIG. 8 (web winding body Z with row winding core).
Is supplied to the post-process side (for example, the drying process side), and then the core Q is removed from the web winding body P with a core by a core removing device to manufacture a coreless roll paper.

In this embodiment, the web is perforated, and the web is preliminarily divided into product widths in the width direction, and the web is wound around the take-up shaft. It is also applicable to a method in which a wide web is wound around a winding shaft made of a paper tube, and then the long roll paper is later cut into product dimensions, as is generally done from the above.

[Brief description of drawings]

FIG. 1 is an overall schematic view of a roll paper manufacturing apparatus used for performing a roll paper manufacturing method according to an embodiment of the present invention.

FIG. 2 is a partially enlarged view of the roll paper manufacturing apparatus of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a partially enlarged state change diagram of FIG.

FIG. 5 is a state change diagram of FIG.

FIG. 6 is a state change diagram of FIG.

FIG. 7 is an explanatory diagram of a web winding body with a winding shaft manufactured by the roll paper manufacturing apparatus of FIG. 1.

8 is an explanatory view of a web winding body with a winding core in which a common shaft is removed from the web winding body with a winding shaft of FIG. 7. FIG.

FIG. 9 is an overall schematic view of a conventional roll paper manufacturing apparatus.

FIG. 10 is an operation explanatory view of the roll paper manufacturing apparatus of FIG.

[Explanation of symbols]

1 is a web feeding device, 2 is a perforation processing device, 3 is a slitter device, 4 is a web winding device, 5 is a core feeding device, 6 is a wound body extrusion device, 7 is a web cutting device, and 9 is a temporary receiving device. The device 10 is a driving device, T (T _{1 to} T ₃ ) is a web, U is a winding shaft, and X is a web winding body.

Claims (1)

[Claims] 1. A web winding device in which a web (T) is fed from a raw roll (S) by a web feeding device (1) and a web winding portion is formed between two winding rolls (41, 42). The web (T) fed out in (4) is wound around the winding shaft (U), and when the web (T) is wound around the winding shaft (U) by a predetermined length, the web is fed out. A web winding body that is wound at a winding position by a winding body extrusion device (6) by temporarily stopping a drive device (10) for feeding the web such as the device (1) and the web winding device (4). (X) The web is continuously extruded from the winding position to the temporary receiving position, and the web stretched between the winding position and the temporary receiving position is cut by the web cutting device (7) to obtain a roll paper. Using a roll paper manufacturing device designed to When the web winding body (X) wound at the winding position is pushed out to the temporary receiving position side, the driving device (10) is driven while being driven in the web feeding direction for a predetermined short time. Characteristic roll paper manufacturing method.