JP2008114948A - Paper roll manufacturing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper roll manufacturing apparatus for manufacturing paper rolls such as toilet paper, kitchen paper, and facial tissue formed by winding at least one sheet of thin paper. <P>SOLUTION: Core shafts are placed between a pair of winding rolls. A thin sheet is wound by the rotation of the pair of winding rolls. A turret performs a rotating motion at a predetermined speed in the state that the pair of winding rolls and the core shafts are installed at predetermined intervals. A core shaft mounting means mounts the core shafts at a predetermined position between the winding rolls by vertically moving when the turret is rotated. A cutter vertically moves when the turret is rotated, and cuts off the end of the thin paper wrapped around the core shafts. A control means controls the movements and the speeds of the pair of winding rolls, the core shafts, the turret, the rider rolls, the core shaft mounting means, and the cutter. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a paper roll manufacturing apparatus in which at least one thin paper such as toilet paper, kitchen paper, tissue paper, or the like is wound. In particular, the present invention relates to a paper roll manufacturing apparatus for continuously and efficiently manufacturing a long paper roll (log) before being cut into dimensions that can be easily used as the toilet paper or kitchen paper. The paper roll is divided into, for example, 6 to 18 and is in a state of being generally used.

  FIG. 6 is a schematic view for explaining the principle of the paper roll manufacturing apparatus in the conventional example. In FIG. 6, the paper roll manufacturing device includes a pair of winding rolls 61, 62, a core shaft 63 placed between the pair of winding rolls 61, 62, and the core shaft 63 from above. It consists of a rider roll 64 that presses, and a thin paper 65 that passes between the take-up roll 61 and the core shaft 63. Since the take-up roll 61 and the take-up roll 62 are rotationally driven as indicated by arrows, the thin paper 65 rises upward along one of the take-up rolls 61 and the core shaft 63. The air passes through between the core shaft 63 and the rider roll 64 by air or the like from a blowing means (not shown). Thereafter, the thin paper 65 is wound around the core shaft 63 and continuously wound around the core shaft 63 by the winding roll 62.

  FIG. 7 is a schematic view for explaining another principle of the paper roll manufacturing apparatus in the conventional example. In FIG. 7, the paper roll manufacturing apparatus is attached to both ends of the turret 71 so that the first winding shaft 72 and the second winding shaft 73 can rotate around the rotation shaft 77. The thin paper 76 is wound around the first winding shaft 72 by the guide roll 75 and the touch roll 74. The first winding shaft 72 continues to rotate with the rotation of the turret 71 while the thin paper 76 is wound. The wound product roll 78 that has finished winding the thin paper 76 rotates with the rotation of the turret 71 while winding the thin paper 76, and the second winding shaft 73 approaches the vicinity of the touch roll 74. In this case, the winding is controlled to finish. The paper roll manufacturing apparatus starts winding the thin paper 76 around the second winding shaft 73 after separating the thin paper 76.

The techniques described in FIGS. 6 and 7 are described in, for example, Japanese Patent Publication No. 7-110729 and Japanese Patent No. 3530624.
Japanese Patent Publication No.7-110729 Japanese Patent No. 3530624

  The thin paper winding device described in Japanese Patent Publication No. 7-110729 has a problem in mass productivity because it rolls paper rolls one by one. Further, the thin paper winding device described in the above-mentioned Japanese Patent No. 3530624 has an advantage that after the one paper roll is wound by the turret, the next paper roll can be continuously wound. However, there is a problem that the apparatus becomes complicated as compared with the thin paper winding apparatus described in the Japanese Patent Publication No. 7-110729. The former winding device rotates while all the rolls are in contact with each other, whereas the latter winding device rotates while being provided in the turret. It had the problem that control with a roll became complicated.

  In order to solve the above-described problems, the present invention is able to stably wind thin paper even when the winding shaft is rotated at a high speed, and waste time when winding the next core shaft. It is an object of the present invention to provide a paper roll manufacturing apparatus that does not have any.

(First invention)
The paper roll manufacturing apparatus of the first invention is for continuously manufacturing a long paper roll by winding at least one wide thin paper, and can change the rotation speed, A pair of winding rolls long in the width direction of the thin paper, a core shaft for winding the thin paper placed between the pair of winding rolls, and a plurality of the pair of winding rolls and core shafts A turret capable of rotating at a predetermined speed while being mounted at a predetermined interval; a rider roll that is temporarily pressed from above the thin paper wound around the core shaft; and a rotating movement of the turret A core shaft mounting means for mounting the core shaft in a predetermined position by moving up and down in conjunction with the core, and moving up and down in conjunction with the rotational movement of the turret, and the core A cutter for cutting the end of the thin paper wound around the shaft, and a control means for controlling rotation of the pair of winding rolls, attachment of the core shaft, rotation of the turret, movement of the rider roll, and movement of the cutter; It is characterized by comprising at least.

(Second invention)
In the paper roll manufacturing apparatus of the second invention, the control means of the first invention is such that the winding speed of the take-up roll during the mounting of the core shaft, the movement of the rider roll, and the cutting of the paper roll is slow, at other times. It is characterized in that the winding speed of the winding roll is increased so that the thin paper is continuously wound around the core shaft.

(Third invention)
In the paper roll manufacturing apparatus of the third invention, one rotation center of the winding roll of the first invention or the second invention is always located on a circumference separated by a certain distance from the center of the turret. It is characterized by.

  According to the present invention, the speed at which the thin paper is wound around the core shaft is slowed only when the thin paper is wound around the first core shaft and then the operation is started to wind the thin paper around the next core shaft. Therefore, the paper roll can be produced efficiently and stably. The winding speed of the thin paper can be slowed during the mounting of the core shaft, the movement of the rider roll, the movement and cutting of the cutter, etc., to increase the normal winding speed.

  According to the present invention, the pair of take-up rolls rotate and move with the rotation of the turret during winding of the thin paper. Therefore, even if the take-up speed of the thin paper is changed, the pair of take-up rolls can stably rotate and move to a predetermined position. Is called.

  According to the present invention, after the thin paper is wound around the core shaft, the arrangement of one of the pair of winding rolls is rotated on a circumference separated by a certain distance from the center of the turret. The arrangement is such that the thin paper can be smoothly wound around the core shaft.

(First invention)
The paper roll manufacturing apparatus according to the first aspect of the present invention is a winding roll capable of changing a rotational speed mounted on a turret, a core shaft for winding thin paper, and when winding the thin paper on the core shaft. A rider roll for obtaining a pressing force, a core shaft mounting means for mounting the core shaft, a cutter for cutting an end of the wound thin paper, and a control means for controlling the movement and speed of these In order to continuously produce a long paper roll by winding one or more wide thin paper sheets. The winding roll is long in the width direction of the thin paper, and a pair is arranged so as to be almost in contact with each other.

  The core shaft is placed between the pair of winding rolls, and the thin paper is wound by the rotation of the pair of winding rolls. The turret continuously or intermittently rotates at a predetermined speed in a state where a plurality of the pair of winding rolls and core shafts are mounted at predetermined intervals. The rider roll is temporarily pressed from above so that the thin paper can be easily wound around the core shaft. The core shaft mounting means mounts the core shaft between the winding rolls at predetermined positions by moving up and down in conjunction with the rotational movement of the turret. The cutter moves up and down in conjunction with the rotational movement of the turret and cuts the end of the thin paper wound around the core shaft. The control means controls the movement and speed of the pair of winding rolls, core shaft, turret, rider roll, core shaft mounting means, and cutter.

  The turret is provided with a pair of winding rolls and a core shaft, for example, so that the supplied thin paper can be continuously wound around the core shaft. In particular, the speed at which the thin paper is wound around the core shaft is controlled so as to be slow only when the thin paper is wound around one core shaft and then the operation is started to wind the thin paper around the next core shaft. Therefore, a paper roll can be produced efficiently and stably. Since the pair of winding rolls rotate with the rotation of the turret, stable rotation is performed even if the winding speed of the thin paper is changed.

(Second invention)
In the paper roll manufacturing apparatus of the second invention, the control means controls the winding of the thin paper around the core shaft and the winding of the thin paper around the next core shaft to be continuous. The control means slows the turret moving speed, core shaft mounting, rider roll movement, speed during cutting of the thin paper, and increases the speed at other times, so that the thin paper is continuously applied to the core shaft. It is wound. That is, the speed at which the thin paper is wound around the take-up roll can be set to a high speed other than the mounting of the core shaft, the movement of the rider roll, the movement of the cutter and the cutting.

(Third invention)
In the paper roll manufacturing apparatus according to the third aspect of the invention, the center of rotation of one of the take-up rolls always rotates on a circumference separated by a certain distance from the center of the turret. The positional relationship between the winding roll and the turret is such that the thin paper can be smoothly wound around the other core shaft after the thin paper is wound around the core shaft by a pair of winding rolls. ing.

  FIG. 1 is a schematic view for explaining a paper roll manufacturing apparatus according to an embodiment of the present invention. In FIG. 1, the paper roll manufacturing apparatus 100 includes a winding unit that winds at least one wide thin paper on a core shaft, a supply unit that supplies the thin paper, and a core shaft that winds the thin paper. And a drive unit such as a cutter for cutting the wound thin paper.

  The winding part is a turret 11 whose rotation is controlled continuously or intermittently at a predetermined speed, and a pair of first windings that are rotatably attached to the turret 11 and can change the rotation speed. Similarly to the take-up rolls 111 and 111 ', a pair of second take-up rolls 112 and 112' whose rotation speed can be changed, and the pair of first take-up rolls 111 and 111 'or the second take-up roll 112, The core shaft 121 is placed between 112 ′ and winds the thin paper 14, and the rider roll 13 is pressed from above the core shaft 121 with a predetermined force.

  The turret 11 is configured such that the center of rotation of the one first take-up roll 111 is located on a circumference separated by a predetermined distance from the center. The first take-up roll 111 is provided with a first take-up roll 111 ′ that rotates in the same direction and winds the thin paper 14 around the core shaft 121 substantially in contact, for example. Further, the pair of first winding rolls 111, 111 ′ or the second winding rolls 112, 112 ′ are attached to the turret 11 in symmetrical positions, and are driven by a driving device (not shown). High-speed rotation and low-speed rotation are possible. The core shaft 121 is placed between the pair of first take-up rolls 111 and 111 ′ by a driving device described later.

  The thin paper 14 moves along the first winding roll 111 via the tension roll 15 and the free roll 16, and then proceeds along the lower part of the core shaft 121, and is moved by the first winding roll 111 ′. Pulled out. The leading end of the thin paper 14 that has been drawn out is put out on the opposite side along the upper portion of the core shaft 121 by an air blowing device (not shown). At that time, the rider roll 13 gives a pressing force for winding the thin paper 14 around the core shaft 121. The rider roll 13 moves upward after the thin paper 14 is wound around the core shaft 121.

  The drive unit includes a support frame 17, a core shaft support unit 171 attached to the support frame 17, a core shaft drive unit 172, a cutter support unit 173, and a cutter 174 attached to the cutter support unit 173. The cutter driving unit 175 drives the cutter 174. The support frame 17 is not shown in addition to supporting each mechanism, but can support both ends of the turret 11 or the winding rolls 111, 111 ', 112, 112', the tension roll 15, and the like. It has become. The core shaft support portion 171 is controlled by the core shaft driving portion 172 so as to be placed between the pair of first winding rolls 111 and 111 ′ to become the core shaft 121.

  The core shaft driving unit 172 is a device that converts rotational motion into linear motion. For example, the core shaft support portion 171 grips the core shaft 12 from a core shaft hopper (not shown), and is placed between the pair of first winding rolls 111 and 111 ′ by the core shaft driving portion 172. . The cutter 174 is lowered at a predetermined timing by a cutter driving unit 175 that converts a rotational motion into a linear motion, and cuts the winding end portion of the thin paper 14 wound around the core shaft 121 with good timing. 121 '(see FIGS. 3 and 4). Thereafter, the paper roll 121 'is cut into a predetermined length and put into use. The core shaft 12 can be a paper tube or a pipe made of metal. The paper tube is supplied from the core shaft hopper. Further, in the case of the pipe made of the metal, the core shaft 12 is pulled out after the paper roll 121 'is manufactured and ready for the next operation.

  Next, the paper roll winding operation will be described with reference to FIGS. FIG. 1 shows an embodiment of the present invention, which is a state immediately after the thin paper starts to be wound on the core shaft. FIG. 2 is a view for explaining the middle of rotation of the turret during winding of the paper roll, according to an embodiment of the present invention. FIG. 3 is a view for explaining a state where the core shaft and the cutter are lowered in one embodiment of the present invention. FIG. 4 is a view for explaining a state where the core shaft and the rider roll are lowered and winding of the thin paper is started on the core shaft and a state where the winding of the thin paper is finished, according to an embodiment of the present invention. is there.

  In FIG. 1, in the paper roll manufacturing apparatus 100, the rider roll 13 moves upward as shown in a state immediately after starting the winding of the thin paper 14 around the core shaft 121. The rider roll 13 moves upward as the rider roll drive unit 131 rotates about the rotation shaft 132. The first winding rolls 111 and 111 ′ start high-speed rotation in the above state, and the thin paper 14 is wound around the core shaft 121.

  In FIG. 2, the paper roll manufacturing apparatus 100 is in the process of rotating and moving the turret 11 while winding the thin paper 14 around the core shaft 121 by the low-speed rotation of the first winding rolls 111 and 111 ′. Represents a state. In FIG. 3, the paper roll manufacturing apparatus 100 approaches the end of winding the thin paper 14 around the core shaft 121, and the core shaft driving unit 172 and the cutter driving unit 175 cause the core shaft supporting unit 171 and the cutter supporting unit 173 to move to each other. The supported core shaft 122 and cutter 174 are shown lowered. In this state, the thin paper 14 is cut by the cutter 174. The core shaft support 171 mounts the core shaft 122 between the second winding rolls 112 and 112 ′.

  In FIG. 4, the paper roll manufacturing apparatus 100 controls the core shaft support portion 171 and the cutter 174 to be raised. The core shaft 122 placed between the second winding rolls 112 and 112 ′ is wound with the thin paper 14 by the rotation of the second winding rolls 112 and 112 ′. The pressing force of the rider roll 13 acts at the beginning of winding of the thin paper 14 wound around the core shaft 122. Thereafter, in the paper roll manufacturing apparatus 100, the rider roll 13 rises and returns to the state shown in FIG. While moving from the state shown in FIG. 4 to the state shown in FIG. 1, the second winding rolls 112, 112 ′ are rotated at a high speed, and most of the thin paper 14 is wound on the core shaft 122.

  FIG. 5 shows an embodiment of the present invention and is a schematic diagram for explaining the speed of winding thin paper around the core shaft and the state of each mechanism portion. In FIG. 5, the horizontal axis represents the time from the start of winding the thin paper around the core shaft, and the vertical axis represents the winding speed / minute of the thin paper. The total length of the paper roll is, for example, 133 m, the winding speed is increased in 5 sec from the start of winding, then 80 m is wound in 12 sec, then the winding speed is decreased, and the remaining 13 m is illustrated in 8 sec. Chuck removal, rider roll rise, core shaft support lowering, cutter lowering, etc. are performed. That is, the paper roll manufacturing apparatus 100 can stably wind the 133 m thin paper 14 in 30 seconds. The movement and rotation of each part is performed by control means not shown. Note that the positions of FIGS. 1 to 4 in FIG. 5 substantially correspond to each other.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example. The present invention can be modified in various ways without departing from the scope of the claims. For example, mechanical parts such as a winding roll, a rider roll, a driving device, and a rotating device in the paper roll manufacturing device of this embodiment are not described in detail because well-known or publicly known mechanical components can be used.

It is the schematic for demonstrating the paper roll production apparatus which is an Example of this invention. Example 1 In one Example of this invention, it is a figure for demonstrating the middle of rotation of a turret in winding of a paper roll. In one Example of this invention, it is a figure explaining the state which a core shaft and a cutter descend. In one Example of this invention, it is a figure for demonstrating the state which the core shaft and the rider roll descend | fall, the winding of the thin paper on the core shaft was started, and the state which the winding of the thin paper was completed. In one Example of this invention, it is the schematic for demonstrating the speed and the state of each mechanism part which wind a thin paper around a core shaft. It is the schematic for demonstrating the principle of the paper roll production apparatus in a prior art example. It is the schematic for demonstrating the other principle of the paper roll production apparatus in a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Paper roll production apparatus 11 ... Turret 111, 111 '... 1st winding roll 112, 112' ... 2nd winding roll 12, 121, 122, 123 ... Core shaft 121 '... paper roll (log)
DESCRIPTION OF SYMBOLS 13 ... Rider roll 131 ... Rider roll drive part 132 ... Rotating shaft 14 ... Thin paper 15 ... Tension roll 16 ... Free roll 17 ... Support stand 171 ... Core shaft support 172 ... Core shaft drive part 173 ... Cutter support part 174 ... Cutter 175 ... Cutter drive part

Claims (3)

In a paper roll production apparatus for continuously producing a long paper roll by winding at least one wide thin paper,
A pair of winding rolls that can change the rotation speed and are long in the width direction of the thin paper,
A core shaft for winding the thin paper placed between the pair of winding rolls;
A turret capable of rotating at a predetermined speed in a state where a plurality of the pair of winding rolls and the core shaft are mounted at predetermined intervals;
A rider roll that temporarily presses from above the thin paper wound around the core shaft;
Core shaft mounting means for mounting the core shaft in a predetermined position by moving up and down in conjunction with the rotational movement of the turret;
A cutter that moves up and down in conjunction with the rotational movement of the turret and cuts the end of the thin paper wound around the core shaft;
Control means for controlling rotation of the pair of winding rolls, mounting of the core shaft, rotation of the turret, movement of the rider roll, and movement of the cutter;
A paper roll manufacturing apparatus characterized by comprising at least:   The control means slows the winding speed of the winding roll during core shaft mounting, rider roll movement, and paper roll cutting, and increases the winding speed of the winding roll at other times. 2. The paper roll manufacturing apparatus according to claim 1, wherein winding of the thin paper onto the paper is controlled to be continuous.   The rotation center of one of the winding rolls is always located on a circumference separated from the center of the turret by a certain distance. Paper roll production equipment.

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