Apparatus and method for processing raw paper roll, and apparatus for manufacturing corrugated board

Abstract

A base paper roll processing device and method, and a corrugated cardboard manufacturing device are provided with: a winding device for winding unwound corrugated cardboard base paper by rotating a base paper roll; a paper end detection unit for detecting the end of the corrugated board base paper wound by the winding device; a tape adhering device for fixing the end part of the rolled corrugated board raw paper to the outer peripheral surface of the raw paper roller through an adhesive tape; and a control unit that controls the rotational speed of the base paper roller on the basis of the direction of arrival of the end of the cardboard base paper on the outer peripheral surface of the base paper roller with respect to the tape adhesion device when the paper end detection unit detects the end of the cardboard base paper, and that operates the tape adhesion device after controlling the rotational speed of the base paper roller.

Description

Technical Field

[0001] The present invention relates to a device and method for processing a base paper roll wound with corrugated cardboard base paper, and a device for manufacturing corrugated cardboard provided with the device for processing the base paper roll. Background Art

[0002] The corrugated paperboard manufacturing device includes a single-facer and a double-facer. The single-facer processes the core into a corrugated shape and attaches a liner to form a single-faced corrugated paperboard. The double-facer attaches a liner to the single-faced corrugated paperboard to form a double-faced corrugated paperboard. The continuous double-faced corrugated paperboard manufactured by the double-facer is cut into a predetermined width by a slitting and creasing machine, and is cut into a predetermined length by a cutting device to manufacture the corrugated paperboard.

[0003] The front liner, the middle core and the back liner are corrugated paper supplied from the paper roll. The corrugated paper is a roll paper, which is wound into a roll to form a paper roll. The paper stand holds a plurality of paper rolls, and supplies corrugated paper by rotating one of the paper rolls forward. When the remaining corrugated paper on the paper roll becomes less, the paper stand can continuously supply corrugated paper by connecting the corrugated paper being supplied to the corrugated paper roll on standby.

[0004] After the corrugated paper sheet is spliced, the cut used paper roll is reversely rotated to wind up the released corrugated paper sheet and fix the end to the outer peripheral surface of the paper roll by adhesive tape. As such a paper roll processing device, there is a device described in Patent Document 1, for example.

[0005] Prior art literature

[0006] Patent Document 1: Japanese Patent No. 2971264 Summary of the invention

[0007] Problems to be solved by the invention

[0008] In the technology described in Patent Document 1, the diameter of the base paper roll is calculated, the winding amount is calculated based on the diameter of the base paper roll and the rotation speed of the rolling center, and the winding speed of the corrugated cardboard base paper is controlled based on the winding amount. In addition, the micro switch detects the end of the corrugated cardboard base paper and operates the tape pasting device. The rolling center inserts a pair of chucks on both sides of the core tube in the axial direction to support the base paper roll. When the corrugated cardboard base paper is spliced, it is necessary to stop the rotation of the corrugated cardboard base paper being supplied via the chuck, but slippage occurs between the chuck and the core tube, and the rotation position (rotation speed) of the rolling center deviates from the rotation position (rotation speed) of the base paper roll. In addition, the corrugated cardboard base paper released from the base paper roll being supplied remains in a state longer than the original length inside the machine, causing slack or wrinkles inside the machine. In addition, an error occurs between the winding amount of the base paper roll calculated based on the detection result of the detection device and the actual winding amount. In order to properly detect the end of the corrugated cardboard base paper, speed control is performed near the end. However, due to errors, the actual end may not reach the detection unit, and the detection accuracy may decrease, and the tape may not be attached correctly.

[0009] The present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a processing device and method for a base paper roll, and a manufacturing device for corrugated cardboard, which can appropriately wind up and fix the base paper of the corrugated cardboard unwound from the base paper roll with high accuracy.

[0010] Means for solving problems

[0011] The base paper roll processing device of the present disclosure for achieving the above-mentioned purpose comprises: a winding device for winding up the released corrugated cardboard base paper by rotating the base paper roll; a paper end detection unit for detecting the end of the corrugated cardboard base paper wound up by the winding device; a tape sticking device for fixing the end of the wound corrugated cardboard base paper to the outer peripheral surface of the base paper roll by an adhesive tape; and a control unit for controlling the rotation speed of the base paper roll based on the direction in which the end of the corrugated cardboard base paper reaches the tape sticking device on the outer peripheral surface of the base paper roll when the paper end detection unit detects the end of the corrugated cardboard base paper, and operating the tape sticking device after controlling the rotation speed of the base paper roll.

[0012] In addition, the base paper roll processing method disclosed in the present invention has the following steps: winding up the released corrugated cardboard base paper by rotating the base paper roll; detecting the end of the above-mentioned corrugated cardboard base paper being wound up; controlling the rotation speed of the above-mentioned base paper roll based on the arrival direction of the end of the above-mentioned corrugated cardboard base paper on the outer peripheral surface of the above-mentioned base paper roll relative to the tape sticking device; and after controlling the rotation speed of the above-mentioned base paper roll, operating the above-mentioned tape sticking device to fix the end of the above-mentioned corrugated cardboard base paper after winding up to the outer peripheral surface of the above-mentioned base paper roll by adhesive tape.

[0013] In addition, the manufacturing device of the corrugated cardboard of the present invention comprises: a base paper stand, which supports the surface liner, the core and the back liner respectively so that they can rotate freely; a single-sided machine, which adheres the above-mentioned back liner to the above-mentioned core after corrugation processing to manufacture the single-sided corrugated cardboard; a double-sided machine, which adheres the above-mentioned surface liner to the above-mentioned core side of the above-mentioned single-sided corrugated cardboard to manufacture the corrugated cardboard; and a processing device for the above-mentioned base paper roll.

[0014] Effects of the Invention

[0015] According to the base paper roll processing device and method and the corrugated cardboard manufacturing device of the present invention, the corrugated cardboard base paper unwound from the base paper roll can be appropriately wound up and fixed with high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram showing a corrugating machine according to the present embodiment.

[0017] Figure 2 This is a schematic diagram showing a paper splicer.

[0018] Figure 3 1 is a schematic diagram showing the structure of a base paper roll processing device according to the present embodiment.

[0019] Figure 4 It is a schematic front view showing the tape sticking device.

[0020] Figure 5 It is a schematic side view showing the tape sticking device.

[0021] Figure 6 It is a schematic diagram showing the main body of the tape sticking device.

[0022] Figure 7 This is a schematic diagram showing an inner winding path in a base paper roll processing device.

[0023] Figure 8 This is a schematic diagram showing an outer winding path in a base paper roll processing device.

[0024] Fig. 9 This is a flowchart showing the flow of a tape sticking process in a base paper roll processing device.

[0025] Fig.10 This is a timing chart showing the flow of the tape sticking process in the base paper roll processing device. DETAILED DESCRIPTION

[0026] Hereinafter, with reference to the accompanying drawings, the preferred embodiments of the present disclosure will be described in detail. In addition, the present disclosure is not limited to the embodiments, and in the case where there are multiple embodiments, a technical solution composed of a combination of the embodiments is also included. In addition, the constituent elements in the embodiments include elements that can be easily thought of by those skilled in the art, substantially the same elements, and so-called elements of an equal scope.

[0027] [Present Embodiment]

[0028] <Corrugated Machine>

[0029] The manufacturing apparatus of the corrugated cardboard of this embodiment is applied to a corrugator. Figure 1 This is a schematic diagram showing a corrugated machine. In the following description, the longitudinal direction of the corrugated machine is set as the X direction, the horizontal direction perpendicular to the longitudinal direction (X direction) of the corrugated machine is set as the Y direction (the width direction of the corrugated cardboard), and the vertical direction perpendicular to the longitudinal direction (X direction) of the corrugated machine (the thickness direction of the corrugated cardboard) is set as the Z direction for description. In addition, the corrugated cardboard base paper is equivalent to any one of the surface lining board, the core board, and the backing board.

[0030] like Figure 1 As shown, the corrugator 10 firstly laminates the inner liner board C1 to the corrugated core B1 to manufacture the single-faced corrugated board D1, and laminates the inner liner board C2 to the corrugated core B2 to manufacture the single-faced corrugated board D2. Next, laminates the inner liner board C2 of the single-faced corrugated board D2 to the core B1 of the manufactured single-faced corrugated board D1, and laminates the outer liner board A to the core B2 of the single-faced corrugated board D2 to manufacture a continuous multi-faced corrugated board. Furthermore, the continuous multi-faced corrugated board is cut into a predetermined length, thereby manufacturing a plate-shaped multi-faced corrugated board.

[0031] In addition, the corrugator 10 can manufacture double-faced corrugated cardboard by bonding the single-faced corrugated cardboard D2 or the single-faced corrugated cardboard D1 to the liner board A. Therefore, in the following description, the double-faced corrugated cardboard and the multi-faced corrugated cardboard are collectively referred to as the double-faced corrugated cardboard E. In addition, the plate-shaped double-faced corrugated cardboard and the plate-shaped multi-faced corrugated cardboard are collectively referred to as the double-faced corrugated cardboard F.

[0032] The corrugator 10 includes: a base paper stand 11 for the core B1, a base paper stand 12 for the liner board C1, a single-sided machine 13, a bridge 14, a base paper stand 15 for the core B2, a base paper stand 16 for the liner board C2, a single-sided machine 17, a bridge 18, a base paper stand 19 for the surface liner board A, a preheater 20, a glue coater 21, a double-sided machine 22, a rotary shearing machine 23, a longitudinal cutting and creasing machine 24, a cutting machine 25, a defective product discharge device 26 and a paper stacker 27.

[0033] The base paper racks 11 and 15 are respectively provided with rolls of paper that are rolled into rolls of the cores B1 and B2 on both sides in the X direction, and splicers 31 and 32 are provided for splicing the paper between the rolls. When paper is supplied from one roll, the other roll is installed to prepare for splicing, and when the remaining paper of one roll becomes less, the splicers 31 and 32 connect the other roll to one roll. Therefore, the cores B1 and B2 are continuously supplied from the base paper racks 11 and 15 to the downstream side.

[0034] The base paper stands 12 and 16 are provided with rolls of paper wound in rolls by lining plates C1 and C2 on both sides in the X direction, and splicers 33 and 34 are provided for splicing paper between the rolls. When paper is fed from one roll, the other roll is installed to prepare for splicing, and when the remaining paper of one roll becomes less, the splicers 33 and 34 connect the other roll to one roll. Therefore, the lining plates C1 and C2 are continuously supplied from the base paper stands 12 and 16 to the downstream side.

[0035] The cores B1 and B2 fed from the base paper stands 11 and 15 and the liner boards C1 and C2 fed from the base paper stands 12 and 16 are preheated by preheaters (not shown). Each preheater has a heating roller supplied with steam, and the cores B1 and B2 and the liner boards C1 and C2 are wound around the heating rollers and fed to raise their temperatures to a predetermined temperature.

[0036] After the heated core B1 is processed into a corrugated shape, the single-facer 13 applies glue to the top of each corrugation and adheres the heated liner board C1 to form a single-faced corrugated cardboard D1. The single-facer 13 is provided with a pick-up conveyor 28 at the exit of the single-faced corrugated cardboard D1, and the single-faced corrugated cardboard D1 formed by the single-facer 13 is conveyed to the bridge 14. The bridge 14 temporarily retains the single-faced corrugated cardboard D1 in order to absorb the speed difference between the single-facer 13 and the double-facer 22.

[0037] After the heated core B2 is processed into a corrugated shape, the single-facer 17 applies glue to the top of each corrugation and adheres the heated liner board C2 to form a single-faced corrugated cardboard D2. The single-facer 17 is provided with a pick-up conveyor 29 at the exit of the single-faced corrugated cardboard D2, and the single-faced corrugated cardboard D2 formed by the single-facer 17 is conveyed to the bridge 18. The bridge 18 temporarily retains the single-faced corrugated cardboard D2 in order to absorb the speed difference between the single-facer 17 and the double-facer 22.

[0038] The paper guide device 30 is provided at the exit of the bridges 14 and 18. The paper guide device 30 adjusts the Y-direction positions of the single-faced corrugated cardboard D1 and the single-faced corrugated cardboard D2 between the bridges 14 and 18 and the double-facer 22.

[0039] The base paper stand 19 is provided with rolls of paper formed by rolling the top liner A into a roll shape on both sides in the X direction, and a paper splicer 35 is provided for splicing the paper between the rolls. When paper is supplied from one roll, another roll is installed to prepare for splicing, and when the remaining paper of one roll becomes less, the paper splicer connects the other roll to one roll. Therefore, the top liner A is continuously supplied from the base paper stand 19 to the downstream side.

[0040] The three preheating rollers 41, 42, and 43 of the preheater 20 are arranged in a row in the Z direction. The preheating roller 41 heats the face liner board A, the preheating roller 42 heats the single-face corrugated cardboard D2, and the preheating roller 43 heats the single-face corrugated cardboard D1. Each of the preheating rollers 41, 42, and 43 has a winding amount adjustment device (not shown), and steam is supplied inside to heat to a predetermined temperature, and the face liner board A, the single-face corrugated cardboard D2, and the single-face corrugated cardboard D1 are wound around the circumference to perform preheating.

[0041] The glue rollers 44 and 45 of the glue coating machine 21 are arranged in the Z direction. The glue coating roller 44 contacts each top of the corrugation of the core B2 in the single-faced corrugated cardboard D2 heated by the preheating roller 42 to apply glue. The glue coating roller 45 contacts each top of the corrugation of the core B1 in the single-faced corrugated cardboard D1 heated by the preheating roller 43 to apply glue. The single-faced corrugated cardboards D1 and D2 glued by the glue coating machine 21 are transferred to the double-face machine 22 of the next process. The liner board A heated by the preheating roller 41 also passes through the glue coating machine 21 and moves to the double-face machine 22.

[0042] The double-face machine 22 has a heating section 36 on the upstream side and a cooling section 37 on the downstream side along the running line of each single-face corrugated cardboard D1, D2 and the front liner A. The single-face corrugated cardboard D1, D2 and the front liner A coated with glue by the glue coating machine 21 are moved between the pressure belt and the hot plate in the heating section 36, and are transferred to the cooling section 37 in a mutually overlapping state as a whole. During this transfer, each single-face corrugated cardboard D1, D2 and the front liner A are pressed and heated, thereby being bonded to each other to form a continuous double-face corrugated cardboard E, and then naturally cooled while being conveyed.

[0043] The double-faced corrugated cardboard E manufactured by the double-faced machine 22 is transferred to the slitting and creasing machine 24. The slitting and creasing machine 24 cuts the wide double-faced corrugated cardboard E along the X direction so as to have a predetermined width, and processes the grid lines extending along the X direction. The slitting and creasing machine 24 is composed of a first slitting and creasing machine unit 53 and a second slitting and creasing machine unit 54 of substantially the same structure arranged along the X direction of the double-faced corrugated cardboard E. The wide double-faced corrugated cardboard E is cut by the slitting and creasing machine 24, thereby forming a double-faced corrugated cardboard E of a predetermined width.

[0044] The cutter 25 cuts the double-faced corrugated cardboard E cut along the X direction by the slitting and creasing machine 24 along the Y direction, and forms a plate-shaped double-faced corrugated cardboard F having a predetermined length. The defective product discharge device 26 discharges the double-faced corrugated cardboard F determined as a defective product by the defective detection device described later from the conveyor line. Although not shown in the figure, the defective product discharge device 26 has a discharge conveyor and a sorting roller. When the plate-shaped double-faced corrugated cardboard F determined as a defective product is conveyed, the sorting roller descends and sorts the defective plate-shaped double-faced corrugated cardboard F to the discharge conveyor and discharges it. The stacker 27 accumulates the double-faced corrugated cardboard F determined as a good product and discharges it outside the machine as a product.

[0045] <Paper splicer>

[0046] Figure 2 The splicers 31, 32, 33, 34, and 35 are substantially the same in structure, so the splicer 33 for splicing the liner board C1 supported by the base paper stand 12 will be described, and the description of the other splicers 31, 32, 34, and 35 will be omitted.

[0047] like Figure 2 As shown, the base paper stand 12 includes a support frame 51, a first support arm 52A, and a second support arm 52B. The base paper stand 12 rotatably supports base paper rolls Ra and Rb on which a liner board C1 serving as corrugated cardboard base paper is wound.

[0048] The support frame 51 is installed on the ground G. The base end portion 61a of the first support arm 52A is rotatably supported on the support frame 51 via a rotation shaft 62a, and the front end portion 63a is oriented to one side in the X direction ( Figure 2 The base end portion 61b of the second support arm 52B is rotatably supported on the support frame 51 via a rotating shaft 62b, and the front end portion 63b extends to the other side in the X direction ( Figure 2 The first support arm 52A is formed into a pair at a distance in the axial direction (Y direction) of the base paper roll Ra, and is connected as a whole by a rotating shaft 62a. The pair of first support arms 52A can be rotated as a whole by a driving device 64a, and can be moved toward and away from each other freely by a moving device (not shown in the figure). The second support arm 52B is formed into a pair at a distance in the axial direction (Y direction) of the base paper roll Rb, and is connected as a whole by a rotating shaft 62b. The pair of second support arms 52B can be rotated as a whole by a driving device 64b, and can be moved toward and away from each other freely by a moving device (not shown in the figure).

[0049] A pair of first support arms 52A are provided with chucks (rolling centers) 65a at each front end 63a in a manner facing each other. In addition, the first support arm 52A is provided with a driving device 66a at the front end 63a. The pair of chucks 65a can be embedded and clamped in the core tube (not shown) of the base paper roll Ra. The driving device 66a can make the base paper roll Ra rotate forward and reverse through the pair of chucks 65a. A pair of second support arms 52B are provided with chucks (rolling centers) 65b at each front end 63b in a manner facing each other. In addition, the second support arm 52B is provided with a driving device 66b at the front end 63b. A pair of chucks 65b can be embedded and clamped in the core tube (not shown) of the base paper roll Rb. The driving device 66b can make the base paper roll Rb rotate forward and reverse through the pair of chucks 65b.

[0050] The paper splicer 33 is arranged above the base paper stand 12. The paper splicer 33 includes a stand 71, a first support roller (support member) 72A, a second support roller (support member) 72B, a first introduction roller 73A, a second introduction roller 73B, a first pressure contact roller 74A, a second pressure contact roller 74B, a first cutter 75A, and a second cutter 75B. However, the first support roller 72A and the second support roller 72B are not limited to rollers, and any rollers can be used as long as they can support the lining plates C1a and C1b.

[0051] The stand 71 is fixed to the upper part of the support frame 51. The stand 71 is provided with a first support roller 72A, a second support roller 72B, a first introduction roller 73A, a second introduction roller 73B, a first pressing roller 74A, a second pressing roller 74B, a first cutter 75A, and a second cutter 75B.

[0052] The first support roller 72A is arranged above the base paper roll Ra supported by the first support arm 52A. The first support roller 72A is rotatable and can be swung in the Z direction by the swing cylinder 81a through the connecting rod 82a. The first introduction roller 73A is arranged adjacent to the first support roller 72A, rotatable, and can be moved and swung in the X direction. The second support roller 72B is arranged above the base paper roll Rb supported by the second support arm 52B. The second support roller 72B is rotatable and can be swung in the Z direction by the swing cylinder 81b through the connecting rod 82b. The second introduction roller 73B is arranged adjacent to the second support roller 72B, rotatable, and can be moved and swung in the X direction.

[0053] A pair of clamping rollers 83a and 83b are arranged in the middle part of the frame 71 in the X direction. The clamping rollers 83a and 83b are rotatable and can move toward and away from each other freely. The first crimping roller 74A is arranged below the clamping roller 83a, is rotatable, and is moved freely by the crimping cylinder 84a. The second crimping roller 74B is arranged at a distance from the first crimping roller 74A in the X direction, is rotatable, and is moved freely by the crimping cylinder 84b. The first tool 75A is arranged adjacent to the first crimping roller 74A, and the second tool 75B is arranged adjacent to the second crimping roller 74B. In addition, the pressing component 85a is supported by the pressing cylinder 86a adjacent to the first tool 75A so as to be movable. The pressing component 85b is supported by the pressing cylinder 86b adjacent to the second tool 75B so as to be movable. Furthermore, the pressing stage 87 and the pressing rollers 88 a and 88 b are supported so as to be movable in the X direction.

[0054] In addition, the frame 71 is provided with a plurality of (three in this embodiment) fixed rollers 89 and a plurality of (three in this embodiment) floating rollers 90 on the upper part. The fixed rollers 89 are supported to be rotatable. The floating rollers 90 are supported to be rotatable and to be movable in the X direction according to the tension of the lining plates C1a and C1b.

[0055] Therefore, when the base paper roll Ra is Figure 2 When the backing sheet C1a of the base paper roll Ra rotates clockwise, the backing sheet C1a is released from the base paper roll Ra, and the released backing sheet C1a is guided by the first support roller 72A and conveyed in the X direction, and is supplied via the first pressure contact roller 74A, the clamping rollers 83a and 83b, the fixed roller 89, and the floating roller 90. When the backing sheet C1a of the base paper roll Ra is reduced, the backing sheet C1a of the base paper roll Ra and the backing sheet C1b of the base paper roll Rb are spliced.

[0056] First, the second support roller 72B swings downward, and moves to the middle position in the X direction of the stand 71 while the second introduction roller 73B and the pressing roller 88b (pressing table 87) hold the end of the lining board C1b. Next, the rotation of the base paper roll Ra is stopped, and the supply of the lining board C1a is stopped. At this time, the tension of the lining board C1a is kept constant by the movement of the floating roller 90, and the retained lining board C1a is continuously supplied. In addition, the first pressing roller 74A is moved downward and pressed against the second introduction roller 73B by the pressing cylinder 84a, and the end of the lining board C1b is bonded to the lining board C1a by the double-sided tape (not shown). At the same time, the pressing component 85b is operated by the pressing cylinder 86b to press the lining board C1a between it and the pressing table 87. In this state, the first cutter 75A operates to cut the lining board C1a. Then, when the base paper roll Rb is moved upward, Figure 2When the roller 72 rotates clockwise, the lining plate C1b connected to the lining plate C1a is released, and the released lining plate C1b is guided by the second support roller 72B and conveyed along the X direction, and is fed through the second pressure contact roller 74B, the clamping rollers 83a and 83b, the fixed roller 89, and the floating roller 90. Then, the floating roller 90 moves and returns to its original position.

[0057] When the backing sheet C1a is supplied while the base paper roll Ra rotates, and the amount of the backing sheet C1a wound in the base paper roll Ra decreases, the backing sheet C1b is connected to the backing sheet C1a, and the backing sheet C1b is supplied from the waiting base paper roll Rb. At this time, the used base paper roll Ra is reversed to wind up the released backing sheet C1a, and the end portion is fixed to the outer peripheral surface of the base paper roll Ra by the adhesive tape.

[0058] <Schematic Structure of Base Paper Roll Processing Device>

[0059] Figure 3 1 is a schematic diagram showing the structure of a base paper roll processing device according to the present embodiment.

[0060] like Figure 3 As shown, the base paper roll processing device 100 reverses the used base paper rolls Ra and Rb to wind up the liner sheets C1a and C1b, and fixes the ends of the liner sheets C1a and C1b to the outer peripheral surfaces of the base paper rolls Ra and Rb with adhesive tape.

[0061] The base paper roll processing device 100 includes an input unit 101 , a paper end detection unit 102 , an outer diameter acquisition unit 103 , a rotation amount acquisition unit 104 , a control device 105 , a winding device 106 , and a tape applying device 107 .

[0062] The input unit 101 is connected to the control device 105. The input unit 101 can be operated by an operator to input a predetermined command signal to the control device 105. The input unit 101 is, for example, a keyboard or a touch display. In addition, the input unit 101 can input a paper splicing command signal to the control device 105. When the paper splicing command signal is input, the control device 105 operates the paper splicer 33.

[0063] The paper end detection unit 102 is connected to the control device 105. The paper end detection unit 102 detects the ends of the lining boards C1a and C1b taken up by the take-up device 106. The paper end detection unit 102 is a photoelectric sensor. The photoelectric sensor emits light such as visible light or infrared light from a light-projecting unit, and detects the change in the amount of light reflected or blocked by the lining boards C1a and C1b as the detected object through a light-receiving unit to obtain an output signal. For example, when the lining boards C1a and C1b are detected, the output signal of the paper end detection unit 102 becomes ON, and when the lining boards C1a and C1b are not detected, the output signal becomes OFF. The paper end detection unit 102 outputs the detection result to the control device 105. In addition, the paper end detection unit 102 is not limited to a photoelectric sensor, and may also be, for example, an ultrasonic sensor or a laser sensor.

[0064] The outer diameter acquisition unit 103 is connected to the control device 105. The outer diameter acquisition unit 103 measures the outer diameter of the base paper rolls Ra and Rb. The outer diameter acquisition unit 103 is a laser sensor. The laser sensor emits laser light from a light projecting unit, detects the laser light reflected by the outer peripheral surface of the base paper rolls Ra and Rb as the detected object through a light receiving unit, detects the time from the emission of the laser light to the light receiving unit, and thereby obtains a position signal of the outer peripheral surface of the base paper rolls Ra and Rb. The outer diameter acquisition unit 103 outputs the measurement result to the control device 105. The position signal of the center of the base paper rolls Ra and Rb based on the distance from the outer diameter acquisition unit 103 to the center of the base paper rolls Ra and Rb is input to the control device 105, and the outer diameter of the base paper rolls Ra and Rb is calculated based on the position signal of the outer peripheral surface of the base paper rolls Ra and Rb and the position signal of the center. In addition, the outer diameter acquisition unit 103 is not limited to a laser sensor, and can also be, for example, an ultrasonic sensor. Alternatively, the outer diameter acquisition unit 103 may calculate the remaining length of the used base paper rolls Ra, Rb based on the length of the liner boards C1a, C1b released when manufacturing the corrugated cardboard, and then calculate the outer diameters of the base paper rolls Ra, Rb based on the remaining length of the used base paper rolls Ra, Rb.

[0065] The rotation amount acquisition unit 104 is connected to the control device 105. The rotation amount acquisition unit 104 measures the rotation amount (rotation angle) of the base paper rolls Ra and Rb. Figure 2As shown, the base paper rack 12 has chucks 65a and 65b at the front end portions 63a and 63b of the first support arm 52A and the second support arm 52B, and the base paper rolls Ra and Rb can be supported by the chucks 65a and 65b. In addition, the first support arm 52A and the second support arm 52B have driving devices 66a and 66b at the front end portions 63a and 63b, and the base paper rolls Ra and Rb can be rotated by the driving devices 66a and 66b. Here, the driving devices 66a and 66b are servo motors, and the rotation speed of the chucks 65a and 65b (base paper rolls Ra and Rb) is detected by an encoder. In addition, the rotation amount acquisition unit 104 is an encoder of the servo motor. The rotation amount acquisition unit 104 outputs the detection result to the control device 105. In addition, the rotation amount acquisition unit 104 is not limited to the encoder of the servo motor, and an encoder for measuring the rotation amount (rotation angle) of the chucks 65a and 65b can also be set separately.

[0066] The control device 105 includes a calculation unit 111 and a control unit 112. The calculation unit 111 calculates the operation start timing of the tape sticking device 107 based on the detection result of the paper end detection unit 102. In this case, the calculation unit 111 calculates the operation start timing when the paper end detection unit 102 detects the end of the liner boards C1a and C1b after the rotation of the base paper rolls Ra and Rb starts to start winding the liner boards C1a and C1b, and after the rotation speed of the base paper rolls Ra and Rb reaches a predetermined speed set in advance. The control unit 112 operates the tape sticking device 107 at the operation start timing calculated by the calculation unit 111.

[0067] Specifically, the calculation unit 111 calculates the operation start timing based on the detection result of the paper end detection unit 102, the measurement result of the outer diameter acquisition unit 103, and the detection result of the rotation amount acquisition unit 104. In this case, the rotation amount acquisition unit 104 calculates the distance from the detection position of the end of the lining plates C1a and C1b to the operation start timing of the tape sticking device 107, that is, the rotation amount (rotation angle) of the lining plates C1a and C1b required for the end of the lining plates C1a and C1b to reach a predetermined distance from the tape sticking device 107. In addition, the calculation unit 111 calculates the deceleration start timing for reducing the rotation speed of the base paper rolls Ra and Rb at the operation start timing before the operation start timing, and the control unit 112 reduces the rotation of the base paper rolls Ra and Rb through the driving devices 66a and 66b at the deceleration start timing. In addition, after calculating the rotation amount (rotation angle) of the lining plates C1a and C1b, the rotation amount acquisition unit 104 can also calculate the time required for the ends of the lining plates C1a and C1b to move from the detection position of the paper end detection unit 102 to the start timing of the tape pasting device 107 based on the rotation speed of the lining plates C1a and C1b.

[0068] The control device 105 is a controller, and is implemented by, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), or the like executing various programs stored in a storage unit using a RAM as a work area.

[0069] The winding device 106 is connected to the control device 105. The winding device 106 operates when an operation command signal is input from the control device 105. The winding device 106 rotates the base paper rolls Ra and Rb to wind up the released liner boards C1a and C1b. In addition, the winding device 106 is configured as a component of a part of the base paper stand 12. That is, the winding device 106 has at least the first support arm 52A and the second support arm 52B, the chucks 65a and 65b, and the drive devices 66a and 66b.

[0070] The tape sticking device 107 is connected to the control device 105. The tape sticking device 107 operates when an operation command signal is input from the control device 105. The tape sticking device 107 fixes the ends of the wound liner sheets C1a and C1b to the outer peripheral surfaces of the base paper rolls Ra and Rb by adhesive tape. The details of the tape sticking device 107 will be described later.

[0071] <With sticking device>

[0072] Figure 4 This is a schematic front view showing the tape sticking device. Figure 5 1 is a schematic side view showing a tape sticking device. Figure 6 It is a schematic diagram showing the main body of the tape sticking device.

[0073] like Figure 4 and Figure 5 As shown, the tape sticking device 107 includes: a first tape sticking device 107A, which is arranged on the first support arm 52A side supporting the base paper roll Ra (lining plate C1a); and a second tape sticking device 107B, which is arranged on the second support arm 52B side supporting the base paper roll Rb (lining plate C1b). The first tape sticking device 107A and the second tape sticking device 107B are roughly symmetrical structures. The tape sticking devices 107A and 107B respectively have main body support devices 108A and 108B and tape sticking device main bodies 109A and 109B.

[0074] In the main support devices 108A and 108B, the support frame 51 has a first frame 121 and a second frame 122 fixed to the upper part. The first frame 121 supports the synchronization shafts 123a and 123b rotatably along the Y direction at a position above the respective rotation shafts 62a and 62b of the first support arm 52A and the second support arm 52B. Sleeves 124a and 124b are fixed to the respective ends of the synchronization shafts 123a and 123b in the axial direction. The base ends of the first connecting rods 125a and 125b are fixed to the sleeves 124a and 124b. The lifting cylinders 126a and 126b are rotatably supported on the second frame 122. The front ends of the driving rods of the lifting cylinders 126a and 126b are rotatably connected to the front ends of the first connecting rods 125a and 125b.

[0075] The base end of the second connecting rod 127a, 127b is fixed to the sleeve 124a, 124b. The base end of the third connecting rod 128a, 128b is rotatably connected to the front end of the second connecting rod 127a, 127b, and the front end is rotatably connected to the tape sticking device body 109A, 109B through the connecting shaft 129a, 129b. In addition, the base end of the fourth connecting rod 130a, 130b is rotatably connected to the first frame 121, and the front end is rotatably connected to the middle part of the third connecting rod 128a, 128b. The swing cylinder 131a, 131b is rotatably supported on the third connecting rod 128a, 128b, and the front end of the driving rod is rotatably connected to the tape sticking device body 109A, 109B.

[0076] In addition, the first links 125a, 125b, the lifting cylinders 126a, 126b, the second links 127a, 127b, the third links 128a, 128b, the fourth links 130a, 130b, and the swing cylinders 131a, 131b are provided in pairs at intervals in the Y direction.

[0077] Therefore, when the lifting cylinders 126a and 126b are extended and retracted, the synchronous shafts 123a and 123b are rotated via the first connecting rods 125a and 125b, and the second connecting rods 127a and 127b, the third connecting rods 128a and 128b, and the fourth connecting rods 130a and 130b are swung, thereby lifting and lowering the tape sticking device main bodies 109A and 109B. In addition, by extending and retracting the swing cylinders 131a and 131b, the tape sticking device main bodies 109A and 109B are swung with the connecting shafts 129a and 129b as fulcrums.

[0078] In addition, the first support roller 72A and the second support roller 72B are arranged on the stand 71 above the base paper rolls Ra and Rb supported by the first support arm 52A and the second support arm 52B. The lining plates C1a and C1b are wound on the upper and outer sides of the first support roller 72A and the second support roller 72B. The first pressing roller (holding member) 141a and the second pressing roller (holding member) 141b are arranged above the first support roller 72A and the second support roller 72B. However, the first pressing roller 141a and the second pressing roller 141b are not limited to rollers, as long as they can support the lining plates C1a and C1b between the first support roller 72A and the second support roller 72B. In addition, one end of the swing link 142a and 142b is rotatably supported on the stand 71, and the first pressing roller 141a and the second pressing roller 141b are rotatably supported at the front end. The swing cylinders 143a and 143b are rotatably supported on the stand 71, and the front end of the driving rod is connected to the swing link 142a and 142b. When the swing cylinders 143a and 143b are extended, the first pressing roller 141a and the second pressing roller 141b swing through the swing link 142a and 142b and press against the first support roller 72A and the second support roller 72B. Therefore, the lining plates C1a and C1b can be clamped between the first support roller 72A and the second support roller 72B and the first pressing roller 141a and the second pressing roller 141b. In addition, the lining plates C1a and C1b can be prevented from falling on the ground G due to their own weight and causing wrinkles or bends.

[0079] The stand 71 is provided with mounting parts 71a and 71b hanging downward at positions adjacent to the first support roller 72A and the second support roller 72B. The paper end detection parts 102a and 102b (102) are provided at the mounting parts 71a and 71b, respectively. Therefore, the paper end detection parts 102a and 102b detect the ends of the lining plates C1a and C1b between the position where the base paper rolls Ra and Rb are supported by the first support arm 52A and the second support arm 52B and the position where the lining plates C1a and C1b are clamped by the first support roller 72A and the second support roller 72B and the first pressing roller 141a and the second pressing roller 141b. In addition, the paper end detection parts 102a and 102b are preferably provided at positions closer to the first support roller 72A and the second support roller 72B than the middle parts between the base paper rolls Ra and Rb and the first support roller 72A and the second support roller 72B.

[0080] The outer diameter acquisition parts 103a and 103b (103) are provided in the support frame 51. The outer diameter acquisition parts 103a and 103b measure the outer diameters of the base paper rolls Ra and Rb.

[0081] The tape applying device main bodies 109A and 109B have substantially the same structure, and therefore the tape applying device main body 109A will be described, and the description of the tape applying device main body 109B will be omitted.

[0082] like Figure 5 and Figure 6 As shown, in the tape sticking device body 109A, a pair of support frames 151 are arranged at intervals in the Y direction, and between the pair of support frames 151, a rubber roller 152 is supported by a rotating shaft 153 so as to rotate freely. The front end of the third connecting rod 128a of each support frame 151 is connected to the connection shaft 129a so as to rotate freely. Each support frame 151 supports the moving frame 154 so as to move freely along the Z direction. Each support frame 151 is fixed with a tape pressing cylinder 155, and the front end of the driving rod is connected to the flange portion 156 of the moving frame 154.

[0083] In each movable frame 154, the tape roll Rt on which the adhesive tape T is wound is rotatably supported by a support shaft 157, and the movement in the Y direction is restricted by a stopper 158. Each movable frame 154 rotatably supports a pressure plate 159 at the bottom by a support shaft 160, and rotatably supports a guide member 161 by a support shaft 162. The pressure plate 159 is pulled to the left by a tension spring 163. Figure 6 The guide member 161 is stretched by the spring 164 to Figure 6 In each support frame 151, a tool cylinder 165 is fixed adjacent to the guide member 161. The tool cylinder 165 is fixed with a tool 166 at the front end of the driving rod. In addition, each support frame 151 is fixed with a semicircular guide member 167 located below the tool cylinder 165. Moreover, each support frame 151 is provided with a belt remaining amount sensor 168, and each moving frame 154 is provided with a belt rotation detection sensor 169.

[0084] Therefore, by operating the lifting cylinder 126a and the swing cylinder 131a, the tape sticking device body 109A moves to the lowered position. At this time, the rubber roller 152 and the guide member 167 of the tape sticking device body 109A contact the outer peripheral surface of the base paper roll Ra. Figure 6 The liner C1a is wound by rotating in the counterclockwise direction. At a predetermined timing, that is, before the end of the liner C1a reaches the guide member 161, the belt pressing cylinder 155 is extended to lower the movable frame 154. Then, the guide member 161 provided on the movable frame 154 rotates while pressing the end of the adhesive tape T against the outer peripheral surface of the base paper roll Ra. When the base paper roll Ra rotates in this state, the adhesive tape T is attached to the outer peripheral surface of the base paper roll Ra. When the adhesive tape T is attached to the outer peripheral surface of the base paper roll Ra, the belt pressing cylinder 155 is contracted to raise the movable frame 154. Furthermore, at a predetermined timing, that is, when the end of the liner C1a passes the guide member 161, the cutter cylinder 165 is extended to protrude the cutter 166 to cut the adhesive tape T.

[0085] <Transportation route of corrugated cardboard base paper>

[0086] Figure 7 This is a schematic diagram showing the inner winding path in the processing device of the base paper roll. Figure 8 This is a schematic diagram showing an outer winding path in a base paper roll processing device.

[0087] In addition, if Figure 2 As shown, in the paper splicer 33, the base paper rolls Ra and Rb are supported by the first support arm 52A and the second support arm 52B, but the rotation direction is different depending on the type of corrugated board base paper (surface liner A, core B1, B2, backing liner C1, C2). For example, Figure 2 The liner board C1a indicated by the solid line in the figure is supplied to the first support roller 72A side by the base paper roll Ra rotating in the clockwise direction, and is wound onto the base paper roll Ra by the base paper roll Ra rotating in the counterclockwise direction. Figure 2 The liner sheet C1a indicated by the two-dot chain line is supplied to the first support roll 72A side when the base paper roll Ra rotates counterclockwise, and is wound around the base paper roll Ra when the base paper roll Ra rotates clockwise.

[0088] That is, Figure 2 and Figure 7 As shown, the base paper stand 12 has support arms 52A, 52B and support rollers 72A, 72B. For example, the first support roller 72A and the first pressing roller 141a are arranged above the base paper roll Ra in the Z direction and on one side in the horizontal direction relative to the support position of the first support arm 52A. Figure 7 The tape sticking device 107A is arranged on the other side (left side) in the horizontal direction relative to the support position of the base paper roll Ra. In addition, a first path P1 is set in which the liner board C1a passes from the first support roller 72A to the tape sticking device 107A side and is wound around the base paper roll Ra. That is, when the base paper roll Ra is moved to the right side, the liner board C1a passes from the first support roller 72A to the first support roller 72A side and is wound around the base paper roll Ra. Figure 7 When the backing sheet C1a is released from the used base paper roll Ra and rotates counterclockwise in the first path P1, it is wound up. The process of winding the backing sheet C1a around the base paper roll Ra through the first path P1 is called the inner winding process. In this case, the end of the backing sheet C1a, that is, the end of the corrugated cardboard base paper, reaches the tape sticking device 107A from the upper side in the Z direction on the outer peripheral surface of the base paper roll Ra.

[0089] On the other hand, Figure 2 and Figure 8 As shown in FIG. 1 , a second path P2 is set in which the liner board C1a is wound around the base paper roll Ra from the support roll 72A through the side opposite to the tape sticking device 107A. Figure 8When the backing sheet C1a is released from the used base paper roll Ra and rotates clockwise in the second path P2, the backing sheet C1a is wound up through the second path P2. The process of winding the backing sheet C1a around the base paper roll Ra through the second path P2 is called an outer winding process. In this case, the end of the backing sheet C1a, that is, the end of the corrugated cardboard base paper, reaches the tape sticking device 107A from the bottom in the Z direction on the outer peripheral surface of the base paper roll Ra.

[0090] And, if Figure 7 As shown in FIG. 1 , if the backing sheet C1a is wound around the base paper roll Ra through the first path P1, the end of the backing sheet C1a is shaken and folded inside when the backing sheet C1a is wound around the base paper roll Ra at a high speed through the inner winding process. Therefore, in the present embodiment, when the paper end detection unit 102 detects the end of the backing sheet C1a during the inner winding process, the control unit 112 reduces the rotation speed of the base paper roll Ra. That is, when the end of the corrugated cardboard base paper reaches the tape sticking device 107A from above in the Z direction on the outer peripheral surface of the base paper roll Ra, the rotation speed of the base paper roll Ra is reduced.

[0091] On the other hand, Figure 8 As shown in FIG. 1 , if the backing sheet C1a is wound around the base paper roll Ra through the second path P2, the end of the backing sheet C1a falls to the ground and is folded inwardly. Therefore, in the present embodiment, when the paper end detection unit 102 detects the end of the backing sheet C1a during the outward winding process, the control unit 112 increases the rotation speed of the base paper roll Ra. That is, when the end of the corrugated cardboard base paper reaches the tape sticking device 107A from the bottom in the Z direction on the outer peripheral surface of the base paper roll Ra, the rotation speed of the base paper roll Ra is increased.

[0092] In addition, here, the path of the lining plate C1a supported by the first support arm 52A and the first support roller 72A in the base paper stand 12 is described, but the path of the lining plate C1b supported by the second support arm 52B and the second support roller 72B in the base paper stand 12 becomes linearly symmetrical, and the structure and function are the same.

[0093] <Method for handling base paper roll>

[0094] Fig. 9 is a flowchart showing the process of tape pasting processing in a base paper roll processing device, Fig.10 This is a timing chart showing the flow of the tape sticking process in the base paper roll processing device.

[0095] The base paper roll processing method of this embodiment has the following steps: winding the released corrugated cardboard base paper by rotating the base paper rolls Ra and Rb; detecting the end of the wound corrugated cardboard base paper; calculating the operation start timing of the tape sticking device 107 based on the detected position of the end of the corrugated cardboard base paper; and operating the tape sticking device 107 at the operation start timing to fix the end of the wound corrugated cardboard base paper to the outer peripheral surface of the base paper rolls Ra and Rb with the adhesive tape T. In addition, in the following description, only the processing on the base paper roll Ra side is described.

[0096] like Figure 3 and Fig. 9 As shown, in step S11, the control device 105 determines whether a paper splicing instruction signal is input from the input unit 101. When the control device 105 determines that the paper splicing instruction signal is not input (No), the control device 105 waits in this state. On the other hand, if the control device 105 determines that the paper splicing instruction signal is input (Yes), then in step S12, the rotation direction of the base paper roll Ra used to wind the liner C1a is detected. That is, it is detected whether the liner C1a is in the first path P1 (inner winding) or in the second path P2 (outer winding). The detection of the rotation direction of the base paper roll Ra is performed, for example, based on the detection result of the encoder of the servo motor constituting the drive device 66a. In addition, the processing of step S12 is not limited to the above-mentioned timing, as long as it is before the processing of step S16, it can be any timing.

[0097] In step S13, the first pressing roller 141a is lowered by the swing cylinder 143a via the swing link 142a, and the liner C1a is clamped by the first pressing roller 141a and the first support roller 72A. In step S14, the control device 105 obtains the outer diameter of the base paper roll Ra based on the detection result of the outer diameter acquisition unit 103. In step S15, the control device 105 determines whether a winding start signal is input. The winding start signal is a paper splicing completion signal output by the paper splicer 33, and the paper splicing completion signal is, for example, a signal output when the first cutter 75A in the paper splicer 33 operates and cuts the liner C1a. Here, if the control device 105 determines that the winding start signal is not input (no), it waits in this state. On the other hand, if the control device 105 determines that the winding start signal is input (yes), in step S16, the drive device 66a starts the rotation of the base paper roll Ra, and starts winding the released liner C1a by accelerating. In step S17, the main body support device 108A of the tape sticking device 107A lowers the tape sticking device body 109A, so that the rubber roller 152 contacts the outer peripheral surface of the base paper roll Ra. In addition, the processing of step S14 is not limited to the above-mentioned timing, as long as it is between the processing of step S12 and the processing of step S15, any timing can be used.

[0098] In step S18, the control device 105 determines whether the rotation speed of the base paper roll Ra has reached a preset high speed. The control device 105 obtains the rotation speed of the base paper roll Ra based on the detection result of the encoder of the servo motor constituting the drive device 66a. When the control device 105 determines that the rotation speed of the base paper roll Ra has not reached a high speed (No), the control device 105 maintains this state. When the control device 105 determines that the rotation speed of the base paper roll Ra has reached a high speed (Yes), the control device 105 maintains the rotation speed of the base paper roll Ra at a high speed in step S19. In step S20, the control device 105 determines whether the end of the lining plate C1a in the base paper roll Ra is detected based on the detection result of the paper end detection unit 102. Here, if the control device 105 determines that the end of the lining plate C1a in the base paper roll Ra is not detected (No), it stands by in this state. On the other hand, if the control device 105 determines that the end of the lining plate C1a in the base paper roll Ra is detected (Yes), it moves to step S21.

[0099] In step S21, the control device 105 confirms whether the base paper roll Ra is inwardly rolled based on the processing result of step S12. When the control device 105 determines that the base paper roll Ra is inwardly rolled (yes), in step S22, the control device 105 reduces the rotation speed of the base paper roll Ra. And, in step S23, the control device 105 determines whether the rotation speed of the base paper roll Ra has been reduced to a pre-set medium speed. When the control device 105 determines that the rotation speed of the base paper roll Ra has not been reduced to the medium speed (no), the control device 105 maintains this state. When the control device 105 determines that the rotation speed of the base paper roll Ra has been reduced to the medium speed (yes), in step S24, the control device 105 maintains the rotation speed of the base paper roll Ra at the medium speed.

[0100] On the other hand, in step S21, when the control device 105 determines that the base paper roll Ra is not wound inward but wound outward (No), in step S25, the control device 105 increases the rotation speed of the base paper roll Ra. And in step S26, the control device 105 determines whether the rotation speed of the base paper roll Ra has increased to a preset high speed. When the control device 105 determines that the rotation speed of the base paper roll Ra has not increased to a high speed (No), the control device 105 maintains this state. When the control device 105 determines that the rotation speed of the base paper roll Ra has increased to a high speed (Yes), in step S27, the control device 105 maintains the rotation speed of the base paper roll Ra at a high speed.

[0101] In step S28, the control device 105 determines whether the end of the lining plate C1a in the base paper roll Ra has reached the position before the tape is pasted (the timing to start deceleration). The adhesive tape T used to fix the end of the lining plate C1a to the outer peripheral surface of the base paper roll Ra has a predetermined length from the upstream side to the downstream side in the rotation direction of the base paper roll Ra relative to the end of the base paper roll Ra. The timing to start the operation of the tape pasting device 107 refers to the timing to paste the end of the upstream side of the adhesive tape T to the outer peripheral surface of the base paper roll Ra. The timing to end the operation of the tape pasting device 107 refers to the timing to cut the end of the downstream side of the adhesive tape T and paste it on the outer peripheral surface of the base paper roll Ra and cut it. The timing to start deceleration refers to the timing that is a predetermined time (predetermined distance) ahead of the timing to start the operation. The operation start timing, operation end timing, and deceleration start timing are calculated based on the timing when the paper end detection unit 102 detects the end of the liner board C1a, the outer diameter of the base paper roll Ra measured by the outer diameter acquisition unit 103, and the rotation amount of the base paper roll Ra detected by the rotation amount acquisition unit 104.

[0102] In step S28, if the control device 105 determines that the end of the lining plate C1a in the base paper roll Ra has not reached the position before the tape is pasted (the timing to start deceleration) (No), the state is maintained. On the other hand, if the control device 105 determines that the end of the lining plate C1a in the base paper roll Ra has reached the position before the tape is pasted (the timing to start deceleration) (Yes), the rotation speed of the base paper roll Ra is reduced in step S29. And, in step S30, the control device 105 determines whether the rotation speed of the base paper roll Ra has been reduced to a preset low speed. When the control device 105 determines that the rotation speed of the base paper roll Ra has not been reduced to a low speed (No), the state is maintained. When the control device 105 determines that the rotation speed of the base paper roll Ra has been reduced to a low speed (Yes), the rotation speed of the base paper roll Ra is maintained at a low speed in step S31.

[0103] In step S32, the control device 105 determines whether the end of the lining plate C1a in the base paper roll Ra has reached the tape pasting position (operation start timing). Here, if the control device 105 determines that the end of the lining plate C1a in the base paper roll Ra has not reached the tape pasting position (operation start timing) (No), the state is maintained. On the other hand, if the control device 105 determines that the end of the lining plate C1a in the base paper roll Ra has reached the tape pasting position (operation start timing) (Yes), the tape pasting device 107A is operated in step S33. That is, the tape pressing cylinder 155 is extended and the guide member 161 is lowered, and the end of the adhesive tape T is pressed against the outer peripheral surface of the base paper roll Ra. Here, when the base paper roll Ra rotates after a predetermined time, the adhesive tape T is pasted on the outer peripheral surface of the base paper roll Ra with a predetermined length, so in step S34, the tape pressing cylinder 155 is contracted and the guide member 161 is raised and moved to the standby position.

[0104] In step S35, the control device 105 determines whether the end of the lining plate C1a in the base paper roll Ra has reached the tape cutting position (the timing of the end of the work). Here, if the control device 105 determines that the end of the lining plate C1a in the base paper roll Ra has not reached the tape cutting position (the timing of the end of the work) (No), the state is maintained. On the other hand, if the control device 105 determines that the end of the lining plate C1a in the base paper roll Ra has reached the tape cutting position (the timing of the end of the work) (Yes), in step S36, the tool cylinder 165 is extended to make the tool 166 protrude, and the adhesive tape T is cut. Then, in step S37, the main body support device 108A of the tape pasting device 107A is used to raise the tape pasting device body 109A, so that the rubber roller 152 is separated from the outer peripheral surface of the base paper roll Ra. In step S38, the rotation speed of the base paper roll Ra is reduced and stopped.

[0105] based on Fig.10 The control of the rotational speed of the base paper roller in the above-mentioned base paper roller processing is explained with reference to the timing diagram.

[0106] like Fig.10 As shown, at time t0, the base paper roll Ra starts to rotate, and accelerates to start winding the lining plate C1a. At time t1, the rotation speed of the base paper roll Ra reaches and maintains a high speed. At time t2 when the end of the lining plate C1a in the base paper roll Ra is detected, when the base paper roll Ra is inwardly wound, the rotation speed of the base paper roll Ra is reduced. And, at time t3, the rotation speed of the base paper roll Ra is maintained at a medium speed. In addition, at this time, the high speed at time t1 may also be set to a medium speed. On the other hand, at time t2 when the end of the lining plate C1a in the base paper roll Ra is detected, when the base paper roll Ra is outwardly wound, the rotation speed of the base paper roll Ra is increased. And, at time t3, the rotation speed of the base paper roll Ra is maintained at a high speed. In addition, at this time, in order to shorten the time period, etc., the high speed may also be set to a high speed at time t2.

[0107] At time t4, when the end of the liner board C1a in the base paper roll Ra reaches the position before tape sticking (deceleration start timing), the rotation speed of the base paper roll Ra is reduced. And when the base paper roll Ra is inwardly wound, the rotation speed of the base paper roll Ra is maintained at a low speed at time t5. On the other hand, when the base paper roll Ra is outwardly wound, the rotation speed of the base paper roll Ra is maintained at a low speed at time t6.

[0108] At time t7, the end of the lining plate C1a in the base paper roll Ra reaches the tape sticking position (operation start timing), and the tape sticking device 107A operates to press the end of the adhesive tape T to the outer peripheral surface of the base paper roll Ra. At this time, in order to shorten the time cycle, etc., the rotation speed of the base paper roll Ra can be increased after a certain amount of adhesive tape T is stuck. And at time t8, if the end of the lining plate C1a in the base paper roll Ra reaches the tape cutting position (operation end timing), the cutter 166 cuts the adhesive tape T. Then, at time t9, the rotation speed of the base paper roll Ra is reduced, and at time t10, the rotation of the base paper roll Ra is stopped.

[0109] [Effects of this embodiment]

[0110] The first method of the base paper roll processing device comprises: a winding device 106 for winding up the released corrugated cardboard base paper by rotating the base paper rolls Ra and Rb; a paper end detection unit 102 for detecting the end of the corrugated cardboard base paper (surface liner A, core paper B1, B2, backing board C1, C2) wound by the winding device 106; a tape sticking device 107 for fixing the end of the wound corrugated cardboard base paper to the outer peripheral surface of the base paper rolls Ra and Rb by means of an adhesive tape T; and a control unit for controlling the rotation speed of the base paper rolls Ra and Rb based on the direction in which the end of the corrugated cardboard base paper reaches the tape sticking device 107 on the outer peripheral surface of the base paper rolls Ra and Rb when the paper end detection unit 102 detects the end of the corrugated cardboard base paper, and operating the tape sticking device 107 after controlling the rotation speed of the base paper rolls Ra and Rb.

[0111] According to the base paper roll processing device of the first embodiment, the control unit 112 controls the rotation speed of the base paper rolls Ra and Rb based on the direction in which the end of the corrugated cardboard base paper reaches the outer peripheral surface of the base paper rolls Ra and Rb relative to the tape sticking device 107. In this case, it is possible to suppress the end of the corrugated cardboard base paper from being folded inward, and the corrugated cardboard base paper can be appropriately wound on the base paper rolls Ra and Rb. As a result, the corrugated cardboard base paper unwound from the base paper rolls Ra and Rb is appropriately wound, and the adhesive tape T is stuck at an appropriate position, thereby making it possible to fix the end of the corrugated cardboard base paper on the outer peripheral surface of the base paper rolls Ra and Rb with high accuracy.

[0112] The base paper roll processing device of the second embodiment is based on the base paper roll processing device of the first embodiment, and further includes: an outer diameter acquisition unit 103 that acquires outer diameter information of the base paper rolls Ra and Rb; a rotation amount acquisition unit 104 that acquires the rotation amount of the base paper rolls Ra and Rb; and a calculation unit 111 that calculates the operation start timing of the tape sticking device 107 based on the detection result of the paper end detection unit 102, the acquisition result of the outer diameter acquisition unit 103, and the acquisition result of the rotation amount acquisition unit 104, and the control unit 112 operates the tape sticking device 107 at the operation start timing. Thus, the operation start timing is calculated based on the detection timing of the paper end detection unit 102 directly detected by the paper end detection unit 102, so that the tape sticking device 107 can be operated at an appropriate timing.

[0113] The base paper roll processing device of the third embodiment is based on the base paper roll processing device of the second embodiment, wherein the calculation unit 111 further calculates the deceleration start timing for reducing the rotation speed of the base paper rolls Ra and Rb before the operation start timing, and the control unit 112 reduces the rotation of the base paper rolls Ra and Rb at the deceleration start timing. Thus, the deceleration start timing is calculated based on the detection timing of the paper end detection unit 102 directly detected by the paper end detection unit 102, so that the rotation of the base paper rolls Ra and Rb is reduced at an appropriate timing, thereby enabling the adhesive tape T to be appropriately attached by the tape attaching device 107.

[0114] The base paper roll handling device of the fourth embodiment is based on the base paper roll handling device of any one of the first to third embodiments, wherein the winding device 106 further includes: support rollers (support members) 72A and 72B that wind and support the corrugated cardboard base paper on one side of the support position of the base paper rolls Ra and Rb in the vertical direction and in the horizontal direction; and pressing rollers (holding members) 141a and 141b that sandwich the corrugated cardboard base paper between the pressing rollers 141a and 141b and the support rollers 72A and 72B, and paper end detection units 102a and 102b detect the end of the corrugated cardboard base paper between the support position of the base paper rolls Ra and Rb and the support rollers 72A and 72B. Thus, even if there is slack in the corrugated cardboard base paper between the base paper rolls Ra and Rb and the sandwiching position between the support rollers 72A and 72B and the pressing rollers 141a and 141b, the slack is eliminated and supported when winding starts. Therefore, the paper end detection unit 102 detects the end of the corrugated cardboard paper immediately after the clamping state between the support rollers 72A and 72B and the pressing rollers 141a and 141b is released. Therefore, the paper end detection unit 102 can reliably detect the end of the corrugated cardboard paper.

[0115] The base paper roll processing device of the fifth embodiment is based on the base paper roll processing device of any one of the first to fourth embodiments, and further has a first path P1 set, which is a path where the end of the corrugated cardboard base paper reaches the tape sticking device 107 from the upper side in the vertical direction on the outer peripheral surface of the base paper rolls Ra and Rb and is wound on the base paper rolls Ra and Rb, and the control unit 112 reduces the rotation speed of the base paper rolls Ra and Rb through the winding device 106 when the paper end detection unit 102 detects the end of the corrugated cardboard base paper. As a result, in the inner winding process in which the corrugated cardboard base paper is wound on the base paper rolls Ra and Rb through the first path P1, the corrugated cardboard base paper is wound on the base paper rolls Ra and Rb at a medium speed, the shaking of the end of the corrugated cardboard base paper is suppressed, and the folding inward is suppressed, so that the corrugated cardboard base paper can be appropriately wound on the base paper rolls Ra and Rb.

[0116] The base paper roll processing device of the sixth embodiment is based on the base paper roll processing device of any one of the first to fourth embodiments, and further has a second path P2 set, the second path P2 being a path for the end of the corrugated cardboard base paper to reach the tape sticking device 107 from the lower side in the vertical direction on the outer peripheral surface of the base paper rolls Ra and Rb and be wound up on the base paper rolls Ra and Rb, and the control unit 112 increases the rotation speed of the base paper rolls Ra and Rb through the winding device 106 when the paper end detection unit 102 detects the end of the corrugated cardboard base paper. As a result, in the outer winding process of the corrugated cardboard base paper being wound up on the base paper rolls Ra and Rb through the second path P2, the corrugated cardboard base paper is wound up on the base paper rolls Ra and Rb at a high speed, and the end of the corrugated cardboard base paper is suppressed from falling to the ground and being folded inward, so that the corrugated cardboard base paper can be appropriately wound up on the base paper rolls Ra and Rb.

[0117] The seventh method of processing a base paper roll includes the following steps: winding the released corrugated cardboard base paper by rotating the base paper rolls Ra and Rb; detecting the end of the wound corrugated cardboard base paper; controlling the rotation speed of the base paper rolls Ra and Rb based on the direction in which the end of the corrugated cardboard base paper reaches the tape sticking device 107 on the outer peripheral surface of the base paper rolls Ra and Rb; and after controlling the rotation speed of the base paper rolls Ra and Rb, operating the tape sticking device 107 to fix the end of the wound corrugated cardboard base paper to the outer peripheral surface of the base paper rolls Ra and Rb with the adhesive tape T. As a result, the end of the corrugated cardboard base paper can be suppressed from folding inward, and the corrugated cardboard base paper can be appropriately wound on the base paper rolls Ra and Rb. As a result, the corrugated cardboard base paper released from the base paper rolls Ra and Rb is appropriately wound, and the adhesive tape T is stuck at an appropriate position, thereby making it possible to fix the end of the corrugated cardboard base paper on the outer peripheral surface of the base paper rolls Ra and Rb with high accuracy.

[0118] The corrugated cardboard manufacturing device of the eighth embodiment comprises: base paper stands 11, 12, 15, 16, 19 for supporting the front liner A, the core B1, B2, and the back liner C1, C2 so as to be rotatable, respectively; single-facers 13, 17 for bonding the back liner C1, C2 to the core B1, B2 after corrugation processing to manufacture single-faced corrugated cardboards D1, D2; double-facer 22 for bonding the front liner A to the core B1, B2 side of the single-faced corrugated cardboards D1, D2 to manufacture corrugated cardboards E, F; and the base paper roll processing device 100 of any one of the first to fifth embodiments. Thus, the base paper roll processing device 100 appropriately winds up the corrugated cardboard base paper unwound from the base paper rolls Ra, Rb, and affixes the adhesive tape T at an appropriate position, thereby enabling the end of the corrugated cardboard base paper to be fixed to the outer peripheral surface of the base paper rolls Ra, Rb with high accuracy.

[0119] Description of Reference Numerals

[0120] 10Corrugated cardboard machine (a device for manufacturing corrugated cardboard)

[0121] 11, 12, 15, 16, 19 base paper racks

[0122] 13, 17 single-sided machine

[0123] 14.18 Bridge Building

[0124] 20 Preheater

[0125] 21 Glue coating machine

[0126] 22 double-sided machine

[0127] 23 Rotary shearing machine

[0128] 24 Slitting and creasing machine

[0129] 25 Cutting machine

[0130] 26Defective product discharge device

[0131] 27Paper stacker

[0132] 28, 29 Pick-up conveyor

[0133] 30 Paper guide device

[0134] 31, 32 paper splicer

[0135] 33, 34 paper splicer

[0136] 35 Paper splicer

[0137] 41, 42, 43 preheating rollers

[0138] 44, 45 Glue coating roller

[0139] 51 Support frame

[0140] 52A first support arm

[0141] 52B Second support arm

[0142] 71 platforms

[0143] 72A first support roller (support member)

[0144] 72B Second support roller (support component)

[0145] 73A First introduction roller

[0146] 73B Second introduction roller

[0147] 74A first crimping roller

[0148] 74B Second crimping roller

[0149] 75A First Tool

[0150] 75B Second Tool

[0151] 100 base paper roll processing device

[0152] 101 Input Department

[0153] 102, 102a, 102b paper end detection unit

[0154] 103, 103a, 103b outer diameter obtaining portion

[0155] 104 Rotation amount acquisition unit

[0156] 105 Control Device

[0157] 106 Coiling device

[0158] 107 with pasting device

[0159] 108A, 108B Main body support device

[0160] 109A, 109B with sticking device body

[0161] 111 Operation Department

[0162] 112 Control Department

[0163] 123a, 123b synchronous shaft

[0164] 124a, 124b sleeve

[0165] 125a, 125b first connecting rod

[0166] 126a, 126b lifting cylinder

[0167] 128a, 128b third connecting rod

[0168] 130a, 130b fourth connecting rod

[0169] 131a, 131b Swing Cylinder

[0170] 141a First pressing roller (holding member)

[0171] 141b Second pressing roller (holding member)

[0172] 142a, 142b swing link

[0173] 143a, 143b Swing Cylinder

[0174] A-sheet liner (corrugated cardboard base paper)

[0175] B1, B2 core paper (corrugated cardboard base paper)

[0176] C1, C1a, C1b, C2 lining board (corrugated cardboard base paper)

[0177] D1, D2 single-faced corrugated cardboard

[0178] E, F double-sided corrugated cardboard

[0179] P1 First Path

[0180] P2 Second Path

[0181] Ra, Rb base paper roll

[0182] T adhesive tape.

Claims

1. A base paper roll processing device, comprising: A winding device, which winds up the released corrugated board base paper by rotating the base paper roller; A paper end detection unit, for detecting an end of the corrugated paperboard base paper wound up by the winding device; A tape sticking device, which fixes the end of the rolled-up corrugated paperboard to the outer peripheral surface of the paper roll by means of an adhesive tape; and The control unit controls the rotation speed of the base paper roller based on the direction in which the end of the corrugated cardboard base paper reaches the tape sticking device on the outer peripheral surface of the base paper roller when the paper end detection unit detects the end of the corrugated cardboard base paper, and operates the tape sticking device after controlling the rotation speed of the base paper roller.

2. The base paper roll processing device according to claim 1, wherein: The base paper roll processing device comprises: An outer diameter acquisition unit, which acquires outer diameter information of the base paper roll; a rotation amount acquisition unit that acquires the rotation amount of the base paper roll; and a calculation unit that calculates the operation start timing of the tape sticking device based on the detection result of the paper end detection unit, the acquisition result of the outer diameter acquisition unit, and the acquisition result of the rotation amount acquisition unit; The control unit operates the tape applying device at the operation start timing.

3. The base paper roll processing device according to claim 2, wherein: The calculation unit calculates a deceleration start timing for reducing the rotation speed of the base paper roll before the operation start timing, and the control unit reduces the rotation speed of the base paper roll at the deceleration start timing.

4. The base paper roll processing device according to claim 1, wherein: The winding device comprises: a supporting member that supports the corrugated paperboard base paper above the supporting position of the base paper roll in the vertical direction and on one side in the horizontal direction; and a holding member, the corrugated cardboard base paper being clamped between the holding member and the supporting member, the paper end detecting unit detecting an end portion of the corrugated cardboard base paper between the supporting position of the base paper roller and the supporting member.

5. The base paper roll processing device according to claim 1, wherein: A first path is set, which is a path along which the end of the base paper roll reaches the tape pasting device from above in the vertical direction on the outer peripheral surface of the base paper roll and is wound on the base paper roll. When the paper end detection unit detects the end of the base paper roll, the control unit reduces the rotation speed of the base paper roll through the winding device.

6. The base paper roll processing device according to claim 1, wherein: A second path is set, which is a path along which the end of the base paper roll reaches the tape pasting device from the bottom in the vertical direction on the outer peripheral surface of the base paper roll and is wound on the base paper roll. When the paper end detection unit detects the end of the base paper roll, the control unit increases the rotation speed of the base paper roll through the winding device.

7. A method for processing a base paper roll, comprising the following steps: The corrugated cardboard base paper that is released is rolled up by rotating the base paper roller; Detecting the end of the rolled corrugated paperboard; Controlling the rotation speed of the base paper roll based on the direction in which the end of the corrugated board base paper reaches the outer circumferential surface of the base paper roll relative to the tape pasting device; and After the rotation speed of the base paper roll is controlled, the tape sticking device is operated to fix the end of the wound corrugated cardboard base paper to the outer peripheral surface of the base paper roll by the adhesive tape.

8. A corrugated cardboard manufacturing device, comprising: The base paper stand supports the surface lining board, the middle core and the inner lining board so that they can rotate freely; A single-facer machine is used to laminate the lining board to the corrugated core to produce a single-faced corrugated paperboard; A double-face machine, which laminates the surface liner to the core side of the single-face corrugated paperboard to manufacture the corrugated paperboard; and The base paper roll processing device according to claim 1.

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