JPS5992855A - Equipment for manufacturing roll of paper - Google Patents

Abstract

PURPOSE:To prevent the scatter in the length of a product in an equipment for manufacturing toilet paper of small diameter from a large-diameter roll of paper, by detecting the diameter of the material roll to gradually reduce the braking torque of a brake as the diameter of the material roll decreases. CONSTITUTION:A paper roll manufacturing equipment comprises a material paper deliver-out unit 2 for delivering material paper P from a material roll 1 of paper, a winder 3 for winding the material paper P around a winding core 8 to make a paper winding 9, a brake 13 for quickly stopping the material paper deliver-out unit 2 and the winder 3 simultaneously, a cutter 4 for cutting the paper winding 9 off the material paper P, and a unit 5 for pasting the cut-off end of the winding 9. A material paper roll diameter detector 16 is provided. A braking torque controller 17 is also provided to receive a signal from the detector 16 to gradually reduce the torque of the brake 13 as the diameter of the material paper roll 1 decreases.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roll paper manufacturing apparatus for manufacturing small-diameter roll paper, such as for toilet paper, from a large-diameter roll of base paper. Immediately after the Z base paper is wound around a core by a predetermined length in a winding device that is driven in conjunction with a base paper feed device to form a paper roll, the brake device is actuated to stop the base paper feed device and the winder. This invention relates to a roll paper manufacturing apparatus which simultaneously stops loading R and further takes out the paper roll from a winding device section, and then cuts the base paper to manufacture roll paper.

In KonoMori's roll paper manufacturing equipment, the time (braking time) from when the brake device starts operating to stop the base paper feeder and winder until the base paper feeder and winder completely stop is It is desirable that it always be constant.1. When the braking time changes, the length of the base paper fed out and the length of the winding body change, and the product (
There will be variations in the length of the paper (roll paper).

However, in the conventional general roll paper roll making machine, the braking torque of the brake device is set constant, so as the diameter of the base paper roll changes, the unwinding device and the The braking time of the winding device changed, causing variations in the length of manufactured products. In other words, when the base paper roll has a large diameter, the rotational inertia of the base paper roll increases, and as the diameter of the base paper roll becomes small, the rotational inertia decreases. The smaller the diameter of the roll, the shorter the braking time, resulting in variations in the unwinding length and winding length of the base paper. In addition, using a roll paper manufacturing device with a constant brake torque, for example, roll paper for toilet paper (standard product length is about J% (length: 2~
3m) There will be a difference.

In addition, some of the conventional glazed roll paper manufacturing equipment include:
Equipped with a brake torque adjustment device that can change the brake torque according to changes in the diameter of the base paper roll, the brake torque can be adjusted manually as needed by visually detecting changes in the diameter of the base paper roll, and also by using a so-called "smell". There is an adjustment device that allows the braking time to be adjusted using a manual brake torque adjustment device, but in a roll paper manufacturing machine that can use this manual brake torque adjustment device, the brake torque is adjusted to 11 m. Since this requires manpower and the scale adjustment is done by "gut feeling", the adjustment tends to be inaccurate, and sometimes people forget to adjust the brake torque.

In view of the shortcomings of the conventional roll paper manufacturing apparatus as described above, the present invention automatically changes the brake torque according to the change in the diameter of the base paper roll, thereby starting from the start of operation of the brake device to the unwinding of the base paper. In a roll paper manufacturing apparatus having the basic configuration as shown in the header, the purpose is to keep the time (braking time) until the winding action completely stops (braking time) always constant.
A base paper roll diameter detection device for detecting the diameter of the base paper roll is installed on the mounting side of the base paper roll, while a base paper roll diameter detection device is installed on the side where the base paper roll is installed, and a device that receives a signal from the base paper roll diameter detection device and also detects the diameter of the base paper roll is installed. This is characterized by the provision of a brake torque adjusting device 6 that acts to gradually reduce the brake torque of the brake device as tE1 decreases from the diameter to the small diameter.

Hereinafter, the roll paper manufacturing apparatus of the present invention will be explained with reference to the embodiments shown in FIGS. 1 to 3.
a base paper feeding device for feeding the base paper at a constant speed; a winding device 3 for winding the base paper P fed from the base paper roll around the outer periphery of the core ♂ to form a paper roll; It is formed by a brake device/3 that suddenly stops the base paper feeding device 2 and the winding device 3 at the same time immediately after the winding device 3 portion winds up the base paper P by a predetermined length, and a winding device 3 portion. It is equipped with a cutting device≠ for separating the paper roll from the base paper P, and a gluing device J for gluing the cut end of the paper roll to the outer surface of the paper roll. A base paper roll diameter detection device/B for detecting the size of the diameter of the base paper roll/B is provided on the installation side of the base paper roll/B, and a signal from the base paper roll diameter detection device/B is provided to detect the diameter of the base paper roll/B. A brake torque adjusting device/7 is provided which acts to reduce the brake torque fif of the brake device/3 as the brake torque gradually decreases from the diameter.

The BX paper roll is mounted between two frames 20, 20 in a straight line.

The base paper feeding device 2 and the winding device 3 are a single motor//
and clutch device /2, so that they are driven intermittently in a mutually synchronous manner.

That is, the power from the motor// is transmitted to the clutch device/2 by the belt 2/, and the clutch device H=:
/ , 2 to belt, 22 to first rotation 'Ri,
23, and from the first rotating shaft λ3 to the second rotating shaft, 2j, by the belt 2≠, l1it is transmitted to the second rotating shaft, 2j, from the second rotating shaft, 2J-, to the base paper feeding device, 2 side and the belt. 27 to the winding device 36, and by connecting and disengaging the clutch device/2, the driving machine 1 and σ after the first rotation ho 1123 are transmitted.
is designed to be driven intermittently.

In this embodiment, the base paper feeding devices 2 are of a band belt drive type, and are provided near both ends of the base paper roll. This base paper feeding device 2 includes both frames 201 near the front side of the base paper roll.
．． Rotation + built between 20! A driving pulley 33 is fixed to the rotary shaft 3, /, and a driven pulley 3'A is pivotally supported by the tip 32b of the rocking arm 32, which is freely and swingably attached to the rotary shaft 3, /. Both pulleys 33.31
A belt-like endless belt 3j is installed between A, and the rocking arm 3
2 toward the center of the base paper roll/, the endless belt 3! The running surface of the base paper roll is brought into pressure contact with the outer peripheral surface of the base paper roll.

The rotation shaft 3/ of the base paper feeding device 2 rotates during the second rotation ii:
1 and 123 by a belt 2, and is configured to rotate with the second rotating shaft 2 by an opening force j.

The g-arm 3.2 is M'j hh with two identically shaped elongated plates 3 Otsu and 3 Otsu as a set. This swing I, 1132, has its base (lower part) 32a side mounted on the rotating shaft 3/ through a bearing 37. Moreover, the rocking arm 32 is an air cylinder 3.
K forces the tip end of the rocking arm toward the center of the base paper roll/ around the rotating shaft 3/.

The endless belt 3j of this paper feeding device 2 runs in the direction of arrow A (
Therefore, when the base paper feeding device 2 is driven, the base paper roll/
is rotated in the direction of arrow B, and the base paper P is continuously fed out.

The leading end of the base paper P fed out from this base paper roll is wound through each paper passing roll (lltO to G≠)] [(!
:1<l'j, written above j'.

The take-up device 3 rotates the two take-up rolls 2g and 29 in the same direction in close proximity to each other, and the upper side between the two take-up rolls 2g and 29. A presser roll 30 is provided above the space formed in 11.
・J has been completed. These two winding rolls, 2 and 22
Seven cores g are sequentially supplied to the upper space between them from the outlet of a core hopper (not shown).

The paper winding speed of the winding device 3 is set to be the same as the paper feeding speed of the paper feeding device 2, and since the winding device 3 and the paper feeding device 2 are driven and stopped synchronously, The base paper winding f1''C (length) every 7 times and the base paper feeding length 9yo (length) are made to be the same.
A counter device /g for measuring the number of rotations of the rotating shaft 3/ is provided at /, and the length of the unrolled base paper (which is the same as the length of the unrolled base paper) is measured by the count number of the counter unit /g. Note that when the rotating shaft 3/ rotates l', the endless belt 3 is made to run for a length equivalent to 7 rotations of the outer peripheral surface of the driving pulley 33, thereby rotating the base paper roll/
The raw paper hP of the same length is fed out from the base paper hP, and therefore, the length of the raw paper fed out can be measured by measuring the number of rotations of the rotating shaft 3/.

This counter device/! ? is the specified base paper feeding length (
For example, for toilet paper, number 44 is issued at a count number (for example, 2fO count) corresponding to ssm). Signals (signal lines
is actuated to suddenly stop the driving portions after the brake device/3 (including the base paper feeding device 2 and the winding device 3).

When the drive part after the brake device/3 stops, the presser roll 3θ of the winding device 3 moves upward, and then the paper L' grown on the two winding rolls 21S and 2.9
1jff1 body is pushed out to the winding body support part O side on the exit side by a winding body extrusion device (not shown).

Between the winding device 3 and the winding body support part B, a cutting device ≠ and a picking device 5 are installed in parallel above the winding device ≠ and on the exit side of the cutting device ≠, and the winding body is tfh M47'. As shown in , after being pushed to the roll supporting part Z side, the cutting device ≠ cuts the base paper P.
At the same time as cutting the base paper P, the gluing device t acts to attach the rice grains to the vicinity of the end of the cut I0r of the rolled body I1 of the base paper P. When the pasting is finished near the cut end, the two rolls A1 and A1 of the winding body support part B rotate, and the pasted end of the base paper is glued to the outer surface of the winding body, and the rolls are rotated. Paper production is completed.

The production of the roll paper is completed as described above, and the next core is supplied to the space between the two winding rolls 21X and 29 of the winding device 3, and the cut end of the base paper is wound on the core. After the presser roll 3o moves downward, the clutch device @/, 2
is connected, the base paper feeding unit and the winding unit 3 are driven, and the base paper winding operation is started.

In this embodiment, the base paper roll diameter detecting device/B is provided on a rocking arm 32 of the base paper reeling device, and as the diameter of the base paper roll becomes smaller, the inclination angle of the rocking arm 32 becomes smaller. By taking advantage of this and detecting the inclination angle of the rocking arm 3, the diameter of the base paper roll can be detected. That is, in this base paper roll diameter detection device/B, an arc-shaped gear j/ is attached to the outer surface of one rocking arm 32, and a circular gear 3-2 is meshed with the arc-shaped gear j/. The base paper roll diameter can be detected by the indicated position of the pointer j3 attached to the shaft of 3.2.

A brake torque adjustment device/7 is installed near the base paper roll diameter detection device/B. This brake torque adjustment device/7 operates to increase the base paper roll diameter rake torque and to reduce the brake torque as the detected base paper roll diameter value gradually decreases. Furthermore, this brake torque! i': 1 section device /7 is the base paper q-le diameter detection device ll, /B corresponds to the detected value of the brake torque [) 7 nl:'J B'j L/P
It's like J. Furthermore, this brake torque;
The magnitude of the brake torque of the WJR station '/7 is transmitted to the brake device qj/3 by line 1) Y, and when the brake device/3 is activated, it is operated by that brake torque.

The detection device for detecting the diameter of the base paper roll is a shaking lung with a tilt angle of 3.2 as in the above embodiment.
In addition to the method of detecting the angle, it is also possible to adopt an inverted structure, such as directly detecting the position of the outer peripheral surface of the base paper roll using optical means such as a photosensor.

Next, to explain in more detail the action of the braking mechanism in the illustrated roll paper manufacturing apparatus, when the base paper P is fed out from the base paper roll by a predetermined length and a stop signal is issued from the counter device, the signal (signal At the same time as the clutch device/2 is disengaged by line X), the brake device/
3 is activated and the drive unit h'4 (after the brake device/3) is activated.
(including the paper drafting device ttλ and the winding device 3) are suddenly stopped.

In addition, when braking, the base paper roll / has a large diameter (for example, diameter L)
, the rotational inertia is large; conversely, when the diameter is small (diameter l), the rotational inertia is small; therefore, depending on the diameter of the base paper roll, the force acting on the feeding device ( It acts to make the endless belt 3j run in the direction of arrow A, that is, it acts to make mj different during braking.However, the brake device /3 uses a braking torque il!a mJ device, '7 to adjust the diameter of the base paper roll /. In response to the magnitude of the rotational inertia during braking, when the rotational inertia is large, the brake torque is increased, and conversely, when the rotational inertia is small, the brake torque is automatically adjusted. This acts to keep the braking time constant.

Next, to explain the non-invention in detail, the roll paper manufacturing apparatus of the present invention includes a base paper roll diameter detecting device for detecting the diameter of the base paper roll, and a base paper roll diameter detection device for detecting the diameter of the base paper roll. As the diameter of the brake equipment/3 gradually decreases in response to the signal from the holder, the braking torque of the brake equipment/3 is gradually reduced. Since the IAj device P/7 is installed, even if the diameter of the base paper roll / changes and the rotational inertia force during braking changes, the brake torque of the brake device /3 will automatically adjust accordingly. As a result, the braking direction of the brake device/3 can always be kept constant regardless of the diameter of the base paper roll.
This has the effect of eliminating variations in the length of the product (roll paper).

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a roll paper production apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of the roll paper production apparatus of FIG. 1, and FIG. 3 is a schematic side view of the roll paper production apparatus of FIG. 1. It is a partially enlarged perspective view. / ...Base paper roll 2 ...Base paper feeding device 3 ...... Winding device ... ... Winding core 7 ....Penoku single roll /3 ... ...Brake device

Claims (1)

[Claims] /, base paper roll (1) by base paper feeding device (2)
The base paper (P) fed out from the base paper feeding device (,2
) The brake device (/3) is actuated immediately after the winding device (3) part, which is driven in conjunction with At least the base paper feeding device (2) and the winding device (3) are stopped at the same time, and after the paper roll (ri) is taken out from the winding device (3), the base paper (P) is A roll paper manufacturing apparatus that manufactures roll paper by cutting the base paper roll (1), the base paper roll diameter detection device for detecting the diameter of the base paper roll (1) on the mounting side of the base paper roll (1). A device (/B) is provided, and the braking device (/B) is sequentially activated in response to a signal from the base paper roll diameter detection device (/B) and as the diameter of the base paper roll (1) gradually decreases from a large diameter to a small diameter. A roll paper manufacturing apparatus characterized by being provided with a brake torque adjusting device (/7) that acts to gradually reduce the brake torque of /3).