JP2015229233A - Formation device of multiple folding paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a formation device of multiple folding paper for effectively preventing unnecessary abrasion of a cutting blade, by properly stopping rotation in a position of not slidingly contacting the mutual relatively rotating cutting blades.SOLUTION: A formation device comprises a plurality of rolls for contributing to the multiple folding paper formation of including a pair or plural pairs of cutting rolls for cutting a band-shaped web in the constant length, and is provided with rotation stopping means for stopping interlocking rotation in a non-sliding contact position of mutual cutting blades by detecting a sliding contact position or the non-sliding contact position of the mutual cutting blades, on the assumption of the formation device of multiple folding paper having a constitution for interlocking-rotating via a gear respectively possessed by the plurality of rolls and having a constitution for cutting the band-shaped web by slidingly contacting a cutting blade possessed by one cutting roll and a cutting blade possessed by the other cutting roll, by oppositely relatively rotating the respective cutting rolls of becoming the pair.

Description

  The present invention relates to an apparatus for forming a multi-folded paper such as a tissue paper accommodated in a tissue box so that it can be continuously taken out.

  For example, as shown in FIGS. 1 and 2 of Patent Document 1 below, a conventional multiple folded paper forming apparatus is configured such that a belt-like web W1 is provided between a pair of cutting rolls 1a and 1b and another pair of cutting rolls 1a ′ and 1b. The belt-like webs W1 'are respectively fed between them, and are cut into fixed lengths to form single-leaf webs W2 and W2'. The intermediate portions of the single-leaf webs W2 and W2 'are joined to the primary waist folding rolls 4a and 4a. ′ To form the webs W3 and W3 ′, and the primary waist folded webs W3 and W3 ′ are subjected to secondary waist folding by the secondary waist folding rolls 7a and 7a ′ and the secondary waist folded web W4. , W4 'are alternately formed, and the above-described secondary waist folded webs W4, W4' are laid flat to form a multiple folded paper W5 while forming an overlap form.

  A plurality of rolls that contribute to the formation of the multifolded paper such as the cutting roll, the forming roll, the primary waist folding roll, and the secondary waist folding roll are configured to rotate in conjunction with each other through gears provided. .

  As shown in FIG. 2, one of the pair of cutting rolls 1a and 1b has one cutting roll 1a disposed on the outer peripheral surface thereof obliquely with respect to the axial direction along the axial direction of the cutting roll 1a. A plurality of cutting blades 2a, and the other cutting roll 1b is provided with a plurality of cutting blades 2b arranged on the outer peripheral surface thereof in parallel with the axial direction along the axial direction of the cutting roll 1b. The blades 2a and 2b intersect and slidably contact to cut the belt-like web W1. Further, as shown in the figure, the cutting blade 2a and the cutting blade 2b are in sliding contact with each other while being inclined and projecting in opposite directions. The configuration of the cutting blade is the same in the other pair of cutting rolls 1a 'and 1b'. Hereinafter, the cutting blades provided in the other pair of cutting rolls 1a 'and 1b' will be described as 2a and 2b, respectively.

Japanese Patent No. 3151199

  In the conventional multiple folding paper forming apparatus, when the interlocking rotation is stopped in a state where the cutting blades 2a and 2b are in sliding contact with each other, the reaction rolls cause the cutting rolls 1a and 1b (1a 'and 1b'). ) Reversely rotate, and the cutting blades 2a and 2b are unnecessarily worn, and the life of these cutting blades is shortened.

  Further, due to an operator error, the interlocking rotation is stopped or reversely rotated while the cutting blades 2a and 2b are in sliding contact, and the cutting rolls 1a and 1b (1a 'and 1b') are stopped or reversely rotated. There was a problem that the cutting blades 2a and 2b were worn unnecessarily.

  In particular, as in the device of Patent Document 1, the paired cutting rolls 1a and 1b (1a 'and 1b') rotate relative to each other, and the cutting blades 2a and 2b included in the respective cutting rolls protrude in opposite directions. In the apparatus, the problem of wear becomes significant.

  The multiple folded paper forming apparatus according to the present invention appropriately stops the interlocking rotation at a position where the cutting blades do not slide against each other, and effectively prevents unnecessary wear of the cutting blades. Moreover, the reverse rotation when the interlocking rotation is stopped is effectively prevented.

  In short, the apparatus according to the present invention includes a plurality of rolls that contribute to the formation of multiple folded paper including a pair or a plurality of pairs of cutting rolls that cut a strip-shaped web into a fixed length, and the gears that each of the plurality of rolls includes. The pair of cutting rolls rotate relative to each other and rotate relative to each other, and slidably contact the cutting blade provided in one cutting roll and the cutting blade provided in the other cutting roll to cut the belt-like web. And a rotation stopping means for detecting a sliding contact position or a non-sliding contact position between the cutting blades and stopping the interlocking rotation at the non-sliding contact position between the cutting blades. The structure which provides is provided and the unnecessary abrasion of a cutting blade is prevented effectively.

  Preferably, the rotation stopping means is a rotating body that is connected to and rotated via an endless belt with a gear included in any one of the plurality of rolls that contribute to the formation of the multiple folded paper or another gear that meshes with the gear. And a plurality of wings that are provided in the rotator and extend radially from the rotation center of the rotator, and are provided along the rotation trajectory of the wings to detect the passage of the wings and transmit a rotation stop signal. The blades are adjusted so that each blade passes through the sensor at a sliding contact position or a non-sliding contact position between the cutting blades.

  In addition, a structure for detachably providing a reverse rotation preventing gear that meshes with a gear included in at least one of the plurality of rolls that contribute to the formation of the multiple folded paper is provided so that the reverse rotation due to the reaction when the interlocking rotation is stopped or due to an operator error. The reverse rotation is effectively prevented, and when the paper (web) being formed is jammed, it is removed so that the plurality of rolls can be reversely rotated.

  Preferably, the reverse rotation prevention gear includes a cam clutch mechanism therein and effectively prevents reverse rotation with a simple structure.

  According to the apparatus for forming multiple folded paper according to the present invention, the interlocking rotation of a plurality of rolls including the cutting roll is appropriately stopped at a position where the cutting blades of the paired cutting rolls do not slide against each other, and no cutting blade is required. Effectively prevents excessive wear.

  Further, the reverse rotation of each roll when the interlocking rotation is stopped is effectively prevented, thereby preventing the reverse rotation of the paired cutting rolls.

Explanatory drawing which outlines the some roll which comprises the formation apparatus of the multiple folding paper which concerns on this invention from the right side surface side. The enlarged view which outlines the cutting blade with which each pair of cutting roll is provided. The top view which outlines the formation apparatus of the multiple folding paper which concerns on this invention. The left view which outlines the gear of the some roll which comprises the formation apparatus of the multiple folding paper which concerns on this invention. The right view which outlines the gear of the some roll which comprises the formation apparatus of the multiple folding paper which concerns on this invention. The perspective view which expands and shows a rotation stop means. The perspective view which expands and shows the gear for a reverse rotation prevention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

  The present embodiment shows a case where the present invention is applied to an apparatus for forming a multi-folded paper described based on Patent Document 1 as a conventional example.

  That is, as shown in FIG. 1, the apparatus for forming multiple folded paper according to this embodiment has a belt-like web W1 between a pair of cutting rolls 1a and 1b and a belt-like web W1 between another pair of cutting rolls 1a 'and 1b'. ′ Are fed to each other and cut into a fixed length to form single-leaf webs W2 and W2 ′, and the intermediate portions of the single-leaf webs W2 and W2 ′ are primary-folded by primary waist folding rolls 4a and 4a ′. The webs W3 and W3 'are formed, and the primary waist folded webs W3 and W3' are secondarily folded by the secondary waist folded rolls 7a and 7a ', and the secondary waist folded webs W4 and W4' are alternately arranged. Then, the secondary waist folded webs W4, W4 ′ are stacked in a overlapping manner to form a multifolded paper W5.

  Further, as shown in FIG. 2, a thin blade-like cutting blade 2a is provided on the outer peripheral surface of one cutting roll 1a of the pair of cutting rolls 1a and 1b along the axial direction of the cutting roll 1a. A thick blade-like cutting blade 2b is provided on the outer peripheral surface of the other cutting roll 1b along the axial direction of the cutting roll 1b in parallel with the axial direction, and the cutting blades 2a, 2b are Are crossed and slid in contact with each other to cut the belt-like web W1. A plurality of the cutting blades 2a, 2b are arranged at equal intervals on the outer peripheral surfaces of the cutting rolls 1a, 1b.

  In addition, as shown in FIG. 2, the cutting blades 2a and 2b are in sliding contact with each other in a state where they are inclined and protrude in opposite directions. This configuration is the same for the other pair of cutting rolls 1a 'and 1b'. The present invention was developed to appropriately prevent unnecessary wear of the cutting blades 2a and 2b other than when the strip-shaped web W1 is cut.

  3 to 5, a plurality of rolls including the pair of cutting rolls 1a and 1b and the other pair of cutting rolls 1a 'and 1b' (primary waist folding rolls 4a and 4a ', secondary waist folding rolls). 7a and 7a ') are configured to rotate in conjunction with each other through gears.

  FIG. 3 is a plan view schematically illustrating the apparatus for forming multiple folded paper according to the present embodiment. In FIG. 3, E1 indicates the left side surface of the apparatus, and E2 indicates the right side surface. Each of the rolls such as the cutting rolls 1a, 1b (1a ', 1b') is provided with gears on the left side E1 side and / or the right side E2 side, and these gears mesh with each other and a plurality of rolls are configured to rotate together. ing. The operator operates the apparatus mainly from the left side E1 side.

<Configuration on the left side E1>
First, the left side E1 side will be described in detail with reference to FIG. On the left side E1, the primary waist folding roll 4a is provided with a gear 4b, and the other primary waist folding roll 4a 'is provided with a gear 4b'. The secondary waist folding roll 7a is provided with a gear 7b, and the other secondary waist folding roll 7a 'is provided with a gear 7b'.

  As will be described later, the secondary waist folding roll 7a is connected to a motor M which is a driving source for interlocking rotation, and a rotational force can be directly transmitted from the motor M. The gear 7b of the secondary waist folding roll 7a meshes with the gear 7b 'of the other secondary waist folding roll 7a' to transmit the rotational force, and the gear 7b meshes with the gear 4b of the primary waist folding roll 4a. Then convey the rotational force. The gear 7b 'of the other secondary waist folding roll 7a' to which the rotational force is transmitted meshes with the gear 4b 'of the other primary waist folding roll 4a' to transmit the rotational force.

  Further, a rotation stop gear 3b constituting the rotation stop means 3 described later is disposed and meshed with the gear 7b of the secondary waist folding roll 7a.

<Configuration on the right side E2 side>
Next, the right side E2 side will be described in detail with reference to FIG. On the right side E2 side, the primary waist folding roll 4a includes a gear 4c, and the other primary waist folding roll 4a 'includes a gear 4c'. The secondary waist folding roll 7 a includes a gear 7 c and is connected to a motor M as a driving source for interlocking rotation via an endless belt 8.

  One of the pair of cutting rolls 1a and 1b (upper side in the figure) has a gear 1c, and the other (lower side in the figure) cutting roll 1b has a gear 1d. Furthermore, one cutting roll 1a 'of the other pair of cutting rolls 1a' and 1b 'includes a gear 1c', and the other cutting roll 1b 'includes a gear 1d'. In the figure, reference numeral 6 denotes an intermediate gear which meshes with the gears 1c and 1d of the pair of cutting rolls 1a and 1b, and 6 'denotes the gears 1c' of the other pair of cutting rolls 1a 'and 1b'. , 1d ′.

  The rotational force applied from the motor M to the secondary waist folding roll 7a is transmitted through the gear 7c of the roll, the gear 4c of the primary waist folding roll 4a, the gear 1d of the other cutting roll 1b, and the intermediate gear 6. The cutting roll 1a is transmitted to the gear 1c, and the plurality of rolls rotate in conjunction with each other. One cutting roll 1 a and the other cutting roll 1 b are relatively rotated by the intermediate gear 6.

  Further, the rotational force applied from the motor M to the secondary waist folding roll 7a includes the gear 7b on the left side E1 side, the gear 7b 'of the other secondary waist folding roll 7a', and other primary waists. The gear 4b 'of the folding roll 4a' is transmitted to the same hip folding roll 4a ', and the gear 4c' on the right side E2 side, the gear 1d of the other cutting roll 1b 'of the other pair of cutting rolls. 'Is transmitted to the gear 1c' of one of the cutting rolls 1a 'via the intermediate gear 6', and the plurality of rolls rotate in conjunction with each other. One cutting roll 1a 'and the other cutting roll 1b' are relatively rotated by an intermediate gear 6 '.

  The other 1b 'of the other pair of cutting rolls 1a' and 1b 'is provided with a gear 1e' that rotates concentrically with the gear 1d 'on the back side of the gear 1d'. Are engaged.

  As described above, the multiple folded paper forming apparatus according to the present embodiment is configured such that a plurality of rolls contributing to the formation of the multiple folded paper are rotated in conjunction with each other through the gears. Therefore, naturally, the pair of cutting rolls 1a and 1b and the other pair of cutting rolls 1a 'and 1b' are also rotated by the above-mentioned interlocking rotation, and the cutting blades 2a and 2b are crossed and slid in contact with each other to form the strip-shaped webs W1 and W1 '. It will be cut off.

  In this embodiment, the case where two pairs of cutting rolls are provided will be described. However, the present invention is not limited to this. In the case where only one pair of cutting rolls is provided, there may be cases where three or more pairs of cutting rolls are provided. It is optional depending on the implementation.

  Further, the number of primary waist folding rolls and secondary waist folding rolls as forming rolls is not particularly limited, and the number of waist folding is not particularly limited.

  Furthermore, the case where the forming apparatus has a roll (for example, a web scraping roll) that contributes to the formation of multiple folded paper other than the waist folding roll is included. The roll includes a bar shape.

<Rotation stop means>
In this embodiment, in the multiple folding paper forming apparatus having the above-described configuration, the rotation stop means 3 is provided, and when the rotation stop operation is performed by the operator, the pair of cutting rolls 1a and 1b are respectively provided. At positions where the cutting blades 2a and 2b and the cutting blades 2a and 2b included in the other pair of cutting rolls 1a 'and 1b' are not in sliding contact with each other, the interlocking rotation of the plurality of rolls is stopped, and thus the cutting blades 2a and 2b are provided. To prevent unnecessary wear.

  As shown in FIGS. 4 and 6, the rotation stopping means 3 is a rotating body that rotates by being connected to a rotation stopping gear 3b that meshes with a gear 7b included in the secondary waist folding roll 7a via an endless belt 3c. 3a, two wings 3d provided on the rotator 3a and extending radially from the center of rotation of the rotator 3a, and passing through the wings 3d provided along the rotation trajectory of each wing 3d (the And a sensor 3e that detects a passage of the tip of each wing 3d and transmits a rotation stop signal.

  The wing body 3d adjusts the arrangement position, the number, the tip width, etc. so as to pass through the sensor 3e at the sliding contact position or the non-sliding contact position between the cutting blades 2a and 2b. When the wing 3d is adjusted to pass the sensor 3e at the sliding contact position between the cutting blades, the rotation stop signal is sent to the motor M side when the sensor 3e does not detect the passage of the wing 3d. To stop the interlocking rotation of multiple rolls. Conversely, when the wing 3d is adjusted to pass the sensor 3e at a non-sliding position between the cutting blades, the sensor 3e outputs a rotation stop signal when the passage of the wing 3d is detected. Transmit to the motor M side and stop the interlocking rotation of multiple rolls.

  The arrangement position, the number of blades 3d, the tip width, etc. of the blade 3d are adjusted by adjusting the rotation ratio (gear diameter, gear) between the paired cutting rolls 1a, 1b and 1a ', 1b' and the secondary waist folding roll 7a. Of course, it is based on the rotation ratio (gear diameter, ratio of the number of gears) between the secondary waist folding roll 7a and the rotation stopping gear 3b.

  Further, in this embodiment, as described above, any one of the rotation stopping gear 3b meshing with the gear 7b of the secondary waist folding roll 7a, that is, any one of a plurality of rolls contributing to the formation of multiple folding sheets. Although the example which connected the said rotary body 3a via the endless belt to another gear meshing with the gear with which a roll is provided was shown, this invention is not limited to this, and any of a plurality of rolls that contribute to the formation of multiple folded paper Depending on the implementation, it is optional to directly connect the rotating body 3a to a gear provided in the roll, for example, the gear 7b of the secondary waist folding roll 7a via an endless belt. However, by providing the rotation stopping gear 3b as in this embodiment, the number of blades 3d can be adjusted freely.

<Gear for reverse rotation>
In the present embodiment, as shown in FIG. 7, in the multiple folded paper forming apparatus having the above-described configuration, the gear 1e ′ provided in the cutting roll 1b ′, that is, a plurality of rolls contributing to the formation of the multiple folded paper. A reverse rotation preventing gear 5 that meshes with a gear included in any one of the rolls is detachably provided. The reverse rotation preventing gear 5 includes a known cam clutch mechanism 9 and has a structure in which only the left rotation and no right rotation are possible in FIG.

  In the present invention, the reverse rotation preventing gear 5 effectively prevents the reverse rotation due to the reaction when the interlocking rotation of the plurality of rolls is stopped, or the reverse rotation due to an operator error, so that the pair of cutting rolls 1a, 1b and other The pair of cutting rolls 1a 'and 1b' is prevented from rotating backward to prevent the cutting blades 2a and 2b from being worn.

  Also, when the paper (web) being formed is jammed, the reverse rotation preventing gear 5 can be removed to rotate the plurality of rolls that rotate in conjunction with each other.

  In this embodiment, as shown in FIG. 7, the gear 1e 'provided in the cutting roll 1b' meshing with the reverse rotation preventing gear 5 transmits the rotational force to another gear (intermediate gear 6 '). It is provided separately from the gear 1d '.

  As described above, according to the multiple folded paper forming apparatus according to the present invention, the rotation stopping means 3 causes the cutting blades 2a and 2b of the paired cutting rolls 1a and 1b (1a ', 1b') to be in sliding contact with each other. The interlocking rotation of the plurality of rolls including the respective cutting rolls is appropriately automatically stopped at the position where the cutting blade is not used, and unnecessary wear of the cutting blade is effectively prevented.

  Further, the reverse rotation prevention gear 5 effectively prevents reverse rotation of each roll when the interlocking rotation is stopped, thereby preventing reverse rotation of the paired cutting rolls and preventing unnecessary wear of the cutting blade. Further, the reverse rotation preventing gear 5 does not directly contribute to the interlocking rotation, and is provided so as to be detachable. Therefore, in an emergency such as clogging of the web being formed, the reverse rotation of the interlocking rotation is allowed.

  1a, 1a '... cutting roll (one cutting roll), 1b, 1b' ... cutting roll (the other cutting roll), 1c, 1c '... cutting roll (one cutting roll) gear, 1d, 1d', 1e ′: Cutting roll (the other cutting roll) gear, 2a: Cutting blade (one cutting blade), 2b: Cutting blade (the other cutting blade), 3: Rotation stop means, 3a: Rotating body, 3b: Rotation stop Gear, 3c ... endless belt, 3d ... wing, 3e ... sensor, 4a, 4a '... primary waist folding roll, 5 ... reverse rotation prevention gear, 6, 6' ... intermediate gear, 7a, 7a '... secondary Waist fold rolls, 7b, 7b '... secondary hip fold roll gear (E1 side), 7c ... secondary hip fold roll gear (E2 side), 8 ... endless belt, 9 ... cam clutch mechanism, W1, W1' ... Strip web, W2, W2 '... Single-leaf web, W3 3 '... primary-folding webs, W4, W4' ... secondary-folding webs, W5 ... multiple folding paper handkerchief, E1 ... left side of the forming apparatus of multi-folding paper handkerchief, E2 ... right side of the forming device of the multi-folding paper handkerchief.

In short, the apparatus according to the present invention includes a plurality of rolls that contribute to the formation of multiple folded paper including a pair or a plurality of pairs of cutting rolls that cut a strip-shaped web into a fixed length, and the gears that each of the plurality of rolls includes. The pair of cutting rolls rotate relative to each other and rotate relative to each other, and slidably contact the cutting blade provided in one cutting roll and the cutting blade provided in the other cutting roll to cut the belt-like web. And a rotation stopping means for detecting a sliding contact position or a non-sliding contact position between the cutting blades and stopping the interlocking rotation at the non-sliding contact position between the cutting blades. The structure which provides is provided and the unnecessary abrasion of a cutting blade is prevented effectively.
In addition, by the configuration in which the reverse rotation preventing gear that meshes with the gear included in at least one of the plurality of rolls that contribute to the formation of the multiple folded paper is detachably provided, the reverse rotation due to the reaction when the interlocking rotation is stopped or due to an operator error The reverse rotation is effectively prevented, and when the paper (web) being formed is jammed, it is removed so that the plurality of rolls can be reversely rotated.

Claims (4)

  A plurality of rolls that contribute to the formation of multiple folded paper including a pair or a plurality of pairs of cutting rolls that cut the belt-like web into a fixed length, and the plurality of rolls are configured to rotate together via gears that are respectively provided, and the pair Each of the cutting rolls is a multi-folded paper forming apparatus having a configuration in which the cutting blade provided in one cutting roll and the cutting blade provided in the other cutting roll are slidably contacted to cut the belt-shaped web. And a rotation stopping means for detecting the sliding contact position or the non-sliding contact position between the cutting blades and stopping the interlocking rotation at the non-sliding contact position between the cutting blades. Forming equipment.   The rotation stopping means is connected to a gear provided in any one of a plurality of rolls contributing to the formation of the multiple folded paper or another gear meshing with the gear via an endless belt, and a rotating body that rotates. A plurality of wings that are provided on the rotating body and extend radially from the rotation center of the rotating body, and a sensor that is provided along the rotation trajectory of each of the wings and detects the passage of each wing and transmits a rotation stop signal. 2. The apparatus for forming multiple folded paper according to claim 1, wherein each blade is adjusted so as to pass through the sensor at a sliding contact position or a non-sliding contact position between the cutting blades.   The reversing prevention gear which meshes with the gear with which at least 1 roll of the several roll which contributes to the said multiple folding paper formation is provided so that attachment or detachment is possible. Multiple folding paper forming device.   4. The apparatus for forming multiple folded paper according to claim 1, wherein the reverse rotation preventing gear includes a cam clutch mechanism therein.

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