Roll paper support device and cardboard sheet manufacturing device

Abstract

The present invention comprises: a pair of support arms movably supported along the axial direction of a support shaft of a frame; a drive device that causes the pair of support arms to approach and separate; and a pair of chucks that are rotatably mounted on tip portions of the pair of support arms and are capable of supporting a paper roll. The chucks include: a chuck main body that has a shape in which an outer diameter decreases from a base portion toward a tip portion and in which a plurality of guide parts along the axial direction are provided on an outer circumferential surface; and a plurality of support members that include a receiving part movably supported by the plurality of guide parts and capable of contacting an end of the paper roll, and a support part capable of contacting an inner circumferential surface of the paper roll. Further provided are: a movement device that includes a movement member capable of contacting the plurality of support members and that can move the plurality of support members to the tip portion side by the movement member; and a force applying device that applies force in a direction in which the plurality of support members and the movement member approach each other.

Description

[Technical field]

[0001] The present disclosure relates to a roll paper support device having a roll paper chuck for supporting roll paper, and a cardboard sheet manufacturing device equipped with the roll paper chuck and the roll paper support device. [Background technology]

[0002] A corrugating machine, which is a device for manufacturing cardboard sheets, includes a single facer and a double facer. The single facer processes a core paper into a corrugated shape and attaches a back liner to form a single-sided cardboard sheet. The double facer attaches a front liner to the single-sided cardboard sheet to form a double-sided cardboard sheet. The continuous double-sided cardboard sheet manufactured by the double facer is cut to a specified width by a slitter scorer, and then cut to a specified length by a cut-off device to produce cardboard sheets.

[0003] The single facer and double facer each have a mill roll stand that supports the roll paper. The mill roll stand rotatably supports the roll paper, including the core paper, back liner, and front liner. The mill roll stand has a pair of arms. The pair of arms are supported on a frame so that they can move toward and away from each other, and a chuck is provided at the tip of each arm. When the pair of arms are brought toward each other, each chuck is inserted into the core tube of the roll paper to clamp it and support the roll paper.

[0004] The chuck has a chuck body and a plurality of support members. The chuck body is cone-shaped, and a plurality of guide portions are provided on the outer periphery along the axial direction. The plurality of support members are L-shaped, and are supported movably by the respective guide portions of the chuck body. Therefore, when the arm moves, the tip portion of the chuck body is inserted into the core tube of the roll paper, and each support member abuts against the end face of the core tube. Then, each support member moves along the guide portion as the chuck body moves into the core tube. Then, each support member moves to the outside of the chuck body, and the outer periphery presses against the inner surface of the core tube, and the two become one body due to the frictional resistance between them.

[0005] An example of a roll paper support device having such a roll paper chuck is described in the following cited document 1. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Publication number 7-26280 Summary of the Invention [Problem to be solved by the invention]

[0007] The roll paper is loaded onto a transport cart and transported to the mill roll stand. After the roll paper is transported to a specified position, the arm descends to align the center of the roll paper with the center of rotation of the arm (center of the chuck). At this time, the center of the roll paper and the center of the arm may be misaligned. In this case, when the arm moves and the tip of the chuck body is inserted into the core tube of the roll paper, a phenomenon occurs in which some of the support members do not abut on the end face of the core tube. Then, when the chuck body is inserted further into the core tube, the support members that have not abutted on the end face of the core tube bite into the roll paper, damaging the base paper. In addition, the arm supports the roll paper in an eccentric state where the center of rotation is misaligned with the center of the roll paper. Then, when the chuck rotates at high speed and centrifugal force acts on the roll paper, the load acting on the roll paper during rotation fluctuates, and the web being fed may break.

[0008] The present disclosure is intended to solve the above-mentioned problems, and aims to provide a roll paper support device and a cardboard sheet manufacturing apparatus that suppresses damage to the roll paper when the chuck supports the roll paper and suppresses supporting the roll paper in an off-center state. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the roll paper support device disclosed herein comprises a pair of support arms supported so as to be freely movable along the axial direction of a support shaft of a frame, a drive device for moving the pair of support arms towards and away from each other, and a pair of chucks rotatably attached to the tips of the pair of support arms and capable of supporting roll paper, the chuck having a chuck body having an outer diameter that decreases from the base end to the tip end and having multiple guide portions along the axial direction on its outer circumferential surface, and a plurality of support members movably supported on the multiple guide portions and having a receiving portion capable of contacting the end of the roll paper and a support portion capable of contacting the inner surface of the roll paper, a moving device having a moving member capable of contacting the multiple support members and capable of moving the multiple support members towards the tip end using the moving member, and a force application device for applying a force in a direction that brings the multiple support members and the moving member closer together.

[0010] The chuck for roll paper disclosed herein also comprises a chuck body having an outer diameter that decreases from the base end to the tip end and having multiple guide portions along the axial direction on its outer peripheral surface, a plurality of support members that are movably supported by the multiple guide portions and have a receiving portion capable of contacting the end of the roll paper and a support portion capable of contacting the inner peripheral surface of the roll paper, and a plurality of connecting members extending from the multiple support members in a direction intersecting the direction of movement of the support members, and moving the multiple support members together in the axial direction of the chuck body and moving the multiple support members synchronously in the radial direction of the chuck body.

[0011] In addition, the cardboard sheet manufacturing apparatus of the present disclosure includes a roll paper support device that supports the roll paper of the first liner, the roll paper of the second liner, and the roll paper of the core paper that serves as the center core, a single facer that manufactures a single-sided cardboard sheet by bonding the second liner to the corrugated center core, and a double facer that manufactures a cardboard sheet by bonding the first liner to the center core side of the single-sided cardboard sheet. Effect of the Invention

[0012] The roll paper support device, roll paper chuck, and cardboard sheet manufacturing apparatus disclosed herein can prevent damage to the roll paper when the chuck supports the roll paper, and can prevent the roll paper from being supported in an off-center state. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a schematic diagram showing a corrugating machine as a manufacturing device for cardboard sheets. [Diagram 2] FIG. 2 is a schematic front view of a mill roll stand. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, illustrating the roll paper support device of the first embodiment. [Figure 4] FIG. 4 is a schematic diagram showing the main parts of the roll paper support device. [Diagram 5] FIG. 5 is a cross-sectional view showing the chuck. [Figure 6] FIG. 6 is a front view showing the chuck. [Figure 7] FIG. 7 is a cross-sectional view showing a main part of the chuck. [Figure 8] FIG. 8 is an explanatory diagram showing the operation of the pressing device. [Figure 9] FIG. 9 is a perspective view showing a mounting structure of the magnet to the support member. [Figure 10] FIG. 10 is a perspective view showing a first modified example of the mounting structure of the magnet to the support member. [Figure 11] FIG. 11 is a perspective view showing a second modified example of the mounting structure of the magnet to the support member. [Figure 12] FIG. 12 is a schematic diagram showing the beginning of insertion of the chuck into the roll paper. [Figure 13] FIG. 13 is a schematic diagram showing the state in which the chuck is being inserted into the roll of paper. [Figure 14] FIG. 14 is a schematic diagram showing the rotated state after the chuck has been completely inserted into the roll paper. [Figure 15]FIG. 15 is a cross-sectional view showing a main part of a roll paper support device according to the second embodiment. [Figure 16] FIG. 16 is a front view showing the main part of the roll paper support device. [Figure 17] FIG. 17 is a cross-sectional view showing a main part of a roll paper support device according to the third embodiment. [Figure 18] FIG. 18 is a cross-sectional view showing the main parts of a roll paper support device according to the fourth embodiment. [Figure 19] FIG. 19 is a front view showing the chuck. [Figure 20] FIG. 20 is a front view showing the operation of the chuck. [Figure 21] FIG. 21 is a front view showing a modified example of the chuck. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. Note that the present disclosure is not limited to these embodiments, and when there are multiple embodiments, the present disclosure also includes a configuration in which each embodiment is combined. In addition, the components in the embodiments include those that a person skilled in the art can easily imagine, those that are substantially the same, and those that are within the so-called equivalent range.

[0015] [First embodiment] <Corrugating machine> Fig. 1 is a schematic diagram showing a corrugating machine as a manufacturing device for cardboard sheets. In the following explanation, the front-rear direction in the conveying direction of the cardboard sheet is defined as the X direction, the horizontal direction perpendicular to the front-rear direction (X direction) in the conveying direction of the cardboard sheet is defined as the Y direction (width direction of the cardboard sheet), and the vertical direction perpendicular to the front-rear direction (X direction) in the conveying direction of the cardboard sheet (thickness direction of the cardboard sheet) is defined as the Z direction.

[0016] As shown in FIG. 1, a corrugating machine 10, which is a cardboard sheet manufacturing device, produces a single-sided cardboard sheet D by bonding a back liner C to a corrugated core B, bonds a front liner A to the core B side of the single-sided cardboard sheet D produced, produces a double-sided cardboard sheet E by cutting the continuous double-sided cardboard sheet E to a specified length, and produces a sheet-like double-sided cardboard sheet F.

[0017] The corrugating machine 10 includes a mill roll stand 11 and a preheater 12 for the core B, a mill roll stand 13 and a preheater 14 for the back liner C, a single facer 15, a bridge 16, a mill roll stand 17 and a preheater 18 for the front liner A, a glue machine 19, a double facer 20, a rotary shear 21, a slitter scorer 22, a cutoff 23, a defective product ejection device 24, and a stacker 25.

[0018] Rolls of paper with a core B wound in a roll shape are mounted on both sides of the mill roll stand 11 in the X direction, and a splicer 11a that splices the paper is provided above them in the Z direction. When one roll of paper is running low, the splicer 11a splices it to the other roll of paper, allowing the core B to be continuously paid out from the mill roll stand 11 toward the downstream side.

[0019] Roll paper with back liner C wound in a roll shape is mounted on each side of the mill roll stand 13 in the X direction, and a splicer 13a that splices the paper is provided above the roll paper in the X direction. When one roll paper is running low or when the order is switched, the splicer 13a splices it to the other roll paper, so that the back liner C can be continuously paid out downstream from the mill roll stand 13.

[0020] The preheaters 12 and 14 respectively preheat the medium B and the back liner C. The preheaters 12 and 14 have preheating rolls 31 and 32 into which steam is supplied, and the medium B and the back liner C continuously fed from the mill roll stands 11 and 13 are heated by the preheating rolls 31 and 32 while being transported, thereby raising the temperatures of the medium B and the back liner C to a predetermined temperature.

[0021] The single facer 15 processes the corrugated medium B heated by the preheater 12 into a corrugated shape, glues it to the top of each step, and bonds a back liner C heated by the preheater 14 to form a single-faced cardboard sheet D. A pick-up conveyor 15a is provided diagonally above the single facer 15 on the downstream side in the conveying direction. The pick-up conveyor 15a is composed of a pair of endless belts, and holds the single-faced cardboard sheet D formed by the single facer 15 and conveys it to the bridge 16. The bridge 16 temporarily holds the single-faced cardboard sheet D in order to absorb the speed difference between the single facer 15 and the double facer 20.

[0022] Roll paper with the front liner A wound in a roll shape is mounted on each side of the mill roll stand 17 in the X direction, and a splicer 17a for splicing the paper is provided above them. When one roll paper is running low or when the order is switched, the splicer 17a splices it to the other roll paper, so that the front liner A can be continuously paid out downstream from the mill roll stand 17.

[0023] The preheater 18 preheats the single-faced cardboard sheet D and the front liner A. The preheater 18 has preheating rolls 33, 34 to which steam is supplied, and heats the single-faced cardboard sheet D and the front liner A continuously fed from the mill roll stand 17 while transporting them with the preheating rolls 33, 34, thereby raising the temperatures of the single-faced cardboard sheet D and the front liner A to a predetermined temperature.

[0024] The glue machine 19 has a gluing device. The single-faced cardboard sheet D heated by the preheat roll 33 is guided into the glue machine 19 on the way, and is glued to each top of the corrugations of the corrugation medium B as it passes between the rider roll and the gluing roll. The single-faced cardboard sheet D glued by the glue machine 19 is transferred to the double facer 20. The front liner A heated by the preheat roll 34 is also transferred to the double facer 20 through the glue machine 19.

[0025] The double facer 20 is divided into an upstream heating section 20A and a downstream cooling section 20B along the running line of the single-faced corrugated cardboard sheet D and the front liner A. The single-faced corrugated cardboard sheet D glued by the glue machine 19 is conveyed between the pressure belt 20a and the hot plate 20b in the heating section 20A, and the front liner A is conveyed between the pressure belt 20a and the hot plate 20b so as to overlap the core B side of the single-faced corrugated cardboard sheet D. After being conveyed between the pressure belt 20a and the hot plate 20b, the single-faced corrugated cardboard sheet D and the front liner A are transported toward the cooling section 20B in a state where they are overlapped vertically. During this transport, the single-faced corrugated cardboard sheet D and the front liner A are heated while being pressurized, and are bonded together to form a continuous double-sided corrugated cardboard sheet E. The double-sided corrugated cardboard sheet E is naturally cooled while being conveyed while being sandwiched between the pressure belt 20a and the conveyor belt 20c in the cooling section 20B, and is then transferred to the rotary shear 21.

[0026] The rotary shear 21 cuts the double-sided corrugated cardboard sheet E in the width direction (Y direction) fully or partially in the initial stage of operation until the lamination is stabilized. The slitter scorer 22 cuts the wide double-sided corrugated cardboard sheet E in the conveying direction (X direction) to a predetermined width, and processes the crease extending in the conveying direction. The slitter scorer 22 is composed of a first slitter scorer unit 22a and a second slitter scorer unit 22b, which have substantially the same structure and are arranged along the conveying direction of the double-sided corrugated cardboard sheet E. The first slitter scorer unit 22a and the second slitter scorer unit 22b each have multiple pairs of upper and lower crease rolls arranged opposite each other with the double-sided corrugated cardboard sheet E in between, in the width direction, and multiple pairs of slitter knives arranged below the double-sided corrugated cardboard sheet E in the width direction.

[0027] The cutoff 23 cuts the double-sided cardboard sheet E cut in the conveying direction by the slitter scorer 22 in the width direction (Y direction) to form a plate-shaped double-sided cardboard sheet F of a predetermined length. The defective product ejection device 24 ejects double-sided cardboard sheets F determined to be defective by the defect detection device from the conveying line. The stacker 25 stacks non-defective double-sided cardboard sheets F and ejects them outside the machine as products.

[0028] <Mill roll stand> Fig. 2 is a schematic front view of the mill roll stand, and Fig. 3 is a cross-sectional view taken along line III-III in Fig. 2, showing the roll paper support device of the first embodiment. Note that mill roll stands 11, 13, and 17 have almost the same configuration, and therefore the following description will focus on mill roll stand 11, and descriptions of mill roll stands 13 and 17 will be omitted.

[0029] 2, the mill roll stand 11 has two roll paper support devices, a roll paper support device 40A and a roll paper support device 40B. Each roll paper support device 40A, 40B can rotatably support the roll paper R. Since each roll paper support device 40A, 40B has the same configuration, only the roll paper support device 40A will be described.

[0030] <Roll paper support device> As shown in Figures 2 and 3, the roll paper support device 40A includes a pair of frames 41, 42, a rotating shaft (support shaft) 43, a rotating shaft drive device 44, a pair of support arms 45, 46, a screw shaft 47, a screw shaft drive device 48, and chucks (chucks for roll paper) 49, 50.

[0031] The pair of frames 41, 42 are installed vertically on a floor surface G with a predetermined interval therebetween. The rotating shaft 43 is arranged horizontally between the pair of frames 41, 42, and each end in the axial direction is rotatably supported by the pair of frames 41, 42. The rotating shaft driving device 44 is arranged outside the frame 42 and can rotate the rotating shaft 43. The pair of support arms 45, 46 are arranged between the pair of frames 41, 42 with a predetermined interval therebetween. The pair of support arms 45, 46 are supported by the rotating shaft 43 at first support parts 45a, 46a on the base end side. The rotating shaft 43 has a key 51 fixed to the outer circumferential surface along the axial direction. The pair of support arms 45, 46 have support holes 52, 53 and key grooves 54, 55 formed in the first support parts 45a, 46a. The pair of support arms 45, 46 have support holes 52, 53 through which the rotating shaft 43 is inserted, and a key 51 is fitted into key grooves 54, 55. The pair of support arms 45, 46 can rotate together with the rotating shaft 43 in the circumferential direction, and can move relative to the rotating shaft 43 in the axial direction.

[0032] The screw shaft 47 is disposed horizontally between the pair of frames 41, 42. The screw shaft 47 is disposed parallel to the rotating shaft 43. The rotating shaft 43 has a support member 56 fixed between the frame 41 and the support arm 45, and a support member 57 fixed between the frame 42 and the support arm 46. The screw shaft 47 has each end in the axial direction rotatably supported by the support members 56, 57. The screw shaft 47 has threaded portions 58, 59 provided on each end side in the axial direction. The threaded portions 58, 59 are threaded in opposite directions. The screw shaft 47 has the threaded portion 58 screwed into the first support portion 45a of the support arm 45, and the threaded portion 59 screwed into the first support portion 46a of the support arm 46. The screw shaft drive unit 48 is disposed on the outer circumferential surface between the support member 57 and the frame 42 of the rotating shaft 43, and is capable of rotating the screw shaft 47.

[0033] Therefore, when the rotary shaft drive unit 44 is driven, the rotary shaft 43 rotates. When the rotary shaft 43 rotates, the support arms 45, 46 rotate via the key 51 and the key grooves 54, 55. When the screw shaft drive unit 48 is driven, the screw shaft 47 rotates. When the screw shaft 47 rotates, the support arms 45, 46 move synchronously in the axial direction via the threaded portions 58, 59. At this time, since the threaded portions 58, 59 are reverse threads, when the screw shaft 47 rotates in one direction, the support arms 45, 46 approach each other via the threaded portions 58, 59. When the screw shaft 47 rotates in the other direction, the support arms 45, 46 move apart via the threaded portions 58, 59.

[0034] Chucks (roll paper chucks) 49, 50 are attached to second support portions 45b, 46b on the other end sides of the pair of support arms 45, 46. The chucks 49, 50 are attached to the opposing surfaces of the second support portions 45b, 46b. The chucks 49, 50 are detachable from the second support portions 45b, 46b.

[0035] Further, the support member 56 is provided with a detection sensor 61. The detection sensor 61 detects the axial position of the support arm 45 relative to the frame 41. The detection sensor 61 detects the amount of rotation of the screw shaft 47. The detection sensor 61 detects the position of the second support part 45b in the support arm 45 based on the amount of rotation of the screw shaft 47. The frame 42 is provided with an operation control panel (control device) 62 on the upper part. The operation control panel 62 can drive and control the rotation shaft drive device 44 and the screw shaft drive device 48 by being operated by an operator. Furthermore, the operation control panel 62 drives and controls the screw shaft drive device 48 based on the detection result of the detection sensor 61. Note that the detection sensor 61 is not limited to the above-mentioned configuration, and may be, for example, a distance sensor that detects the position of the second support part 45b in the support arm 45 relative to the frame 41.

[0036] The roll paper R is a paper roll (not shown) in which a predetermined length of continuous paper R2 is wound around the outer periphery of a paper (or resin) core tube R1. Transport cart The paper roll R is then loaded onto the support arm 45 and transported between the pair of support arms 45, 46. The support arms 45, 46 then descend to align the center of the paper roll R with the center of rotation of the support arms 45, 46 (center of the chuck). The center of the paper roll R and the center of the chucks 49, 50 approximately coincide with each other. In this state, the screw shaft drive unit 48 is driven to rotate the screw shaft 47, and the support arms 45, 46 are moved closer to each other. Then, the chucks 49, 50 attached to the second support parts 45b, 46b of the pair of support arms 45, 46 are inserted into each end of the core tube R1 of the paper roll R, thereby supporting the paper roll R via the core tube R1.

[0037] <Roll paper support device and chuck> Fig. 4 is a schematic diagram showing the main parts of the roll paper support device of the first embodiment, Fig. 5 is a cross-sectional view showing the chuck, Fig. 6 is a front view showing the chuck, and Fig. 7 is a cross-sectional view showing the main parts of the chuck. Note that support arms 45, 46 and chucks 49, 50 have almost the same configuration, and only support arm 46 and chuck 50 will be explained.

[0038] In the following description, the center of the chuck 50 is the center line O1, and the center of the roll paper R is the center line O2. The direction in which the chuck 50 moves toward the roll paper R is the axial direction of the chuck 50, which is a direction parallel to the center line O1. The radial direction of the chuck 50 is a direction perpendicular to the center line O1, and the circumferential direction of the chuck 50 is a circumferential direction centered on the center line O1. The direction in which the chuck 50 is inserted into the roll paper R is the Oa direction along the center line O1, and the direction in which the chuck 50 is removed from the roll paper R is the Ob direction along the center line O1.

[0039] As shown in FIG. 4, the support arm 46 has a rotating shaft 71 rotatably supported by the second support portion 46b. A rotation drive device (not shown) is connected to one axial end of the rotating shaft 71. The rotation drive device is capable of driving and rotating the rotating shaft 71. A chuck 50 is detachably attached to the other axial end of the rotating shaft 71 via a connecting member 72. The roll paper support device 40A has a pressing device (moving device) 73. The pressing device 73 has multiple air cylinders 74 (two in this embodiment) and a pressing plate (moving member) 75. The multiple air cylinders 74 are fixed to the second support portion 46b. The multiple air cylinders 74 have rods 76 that can expand and contract in the axial direction. The movement direction of each rod 76 is parallel to the center line O1. The multiple rods 76 have a pressing plate 75 connected to their tips via a connecting member 77. That is, rods 76 are connected to each end of the pressing plate 75 in the longitudinal direction. The pressing plate 75 is disposed along a direction perpendicular to the center line O1. A circular opening 78 is formed in the center of the pressing plate 75. The inner diameter of the opening 78 is smaller than the minimum outer diameter of a plurality of support members 82 (described later) that constitute the chuck 50.

[0040] As shown in FIGS. 5 and 6, the chuck 50 includes a chuck body 81 and a plurality of support members 82.

[0041] The chuck body 81 has a shape in which the outer diameter decreases from the base end 81a to the tip end 81b, that is, the chuck body 81 has a conical shape as a whole. The chuck body 81 has an attachment portion 91, a main body portion 92, and a stopper portion 93. The attachment portion 91 is attached to the connecting member 72 of the rotating shaft 71. The attachment portion 91 has a disk shape. The main body portion 92 has a conical shape along the axial direction (the direction of the center line O1). The main body portion 92 has a large outer diameter at the base end 81a and a smaller outer diameter at the tip end 81b than the outer diameter of the base end 81a. The base end 81a of the main body portion 92 is integrally connected to the attachment portion 91. In this case, the attachment portion 91 and the main body portion 92 are integrally molded, but they may be molded separately and connected by adhesion or fastening.

[0042] The main body 92 is provided with a plurality of guide grooves 94 (five in this embodiment) as a plurality of guide portions. The guide portions are not limited to the guide grooves 94, and may be guide recesses or the like. The plurality of guide grooves 94 have the same shape. The number of guide grooves 94 is not limited to five, and may be any number as long as it is a plurality. The plurality of guide grooves 94 are provided along the axial direction on the outer peripheral surface of the main body 92. However, since the main body 92 is conical, the plurality of guide grooves 94 are arranged at an incline so as to approach the center line O1 from the base end side toward the tip end side. The plurality of guide grooves 94 are arranged at predetermined intervals (preferably equal intervals) in the circumferential direction on the outer peripheral surface of the main body 92.

[0043] The stopper portion 93 has a conical shape along the axial direction. The outside diameter of the base end of the stopper portion 93 is large, and the outside diameter of the tip end is smaller than the outside diameter of the base end. The maximum outside diameter of the stopper portion 93 is smaller than the minimum inside diameter of the core tube R1. The stopper portion 93 is integrally connected to the tip end of the main body portion 92 (the tip end portion 81b of the chuck main body 81). The stopper portion 93 has a connecting rod 96 provided at the center position of the base end. The connecting rod 96 of the stopper portion 93 is fixed to the main body portion 92. Note that, although the main body portion 92 and the stopper portion 93 are formed separately and connected, they may be integrally molded.

[0044] A plurality of support members 82 (five in this embodiment) are provided. The plurality of support members 82 have the same shape. The plurality of support members 82 are supported movably by guide grooves 94 provided in the main body portion 92 of the chuck body 81. The number of support members 82 is not limited to five, but may be any number as long as it is the same as the number of guide grooves 94. The plurality of support members 82 move along the guide grooves 94, and thus the axial position and radial position relative to the chuck body 81 change. Therefore, the outer diameter of the plurality of support members 82, that is, the outer diameter of the circle passing through the outer periphery of the plurality of support members 82, changes. As described above, the inner diameter of the opening 78 in the pressing plate 75 is smaller than the minimum outer diameter when the plurality of support members 82 move to the tip portion 81b.

[0045] As shown in FIG. 5 to FIG. 7, the support member 82 has a moving part 101 and a support part 102. The moving part 101 has an attachment support part 103 and a flange part 104. The attachment support part 103 has a shape along the outer circumferential surface of the main body part 92. The flange part 104 is connected to an end part of the attachment support part 103 and is arranged so as to protrude radially outward from the chuck body 81. The support part 102 has a circular arc shape along the outer circumferential surface of the main body part 92. The moving part 101 has the support part 102 arranged outside the attachment support part 103 and fixed integrally. Although the moving part 101 and the support part 102 are fastened as separate bodies, they may be formed integrally. The support member 82 supports the attachment support part 103 of the moving part 101 so as to be freely movable along a guide groove 94 provided in the main body part 92 of the chuck body 81.

[0046] The support member 82 has a receiving surface (receiving portion) 106 and a support surface (support portion) 107. The receiving surface 106 is provided on the flange portion 104 of the moving portion 101. The receiving surface 106 is provided on the front end portion 81b side of the chuck body 81 on the flange portion 104, and is a surface along a direction perpendicular to the center line O1. The receiving surface 106 can come into contact with an end of the core tube R1 of the roll paper R. The support surface 107 is provided on the radially outer side of the chuck body 81 on the support portion 102, and is a surface parallel to the direction of the center line O1. The support surface 107 can come into surface contact with the inner peripheral surface of the core tube R1. The support surface 107 is provided with a protrusion 108 that protrudes outward in the radial direction. The protrusion 108 is provided on the support surface 107 along the axial direction, and supports the roll paper R by being engaged by biting into the inner surface of the core tube R1 of the roll paper R.

[0047] The receiving surface 106 has a first receiving surface (first receiving portion) 106a, a second receiving surface (second receiving portion) 106b, and an inclined surface 106c. The receiving surface 106 is long in the radial direction of the chuck body 81. The first receiving surface 106a is located on the center line O1 side of the chuck body 81, on the tip end portion 81b side. The second receiving surface 106b is located on the radial outside of the chuck body 81, on the base end portion 81a side. That is, the second receiving surface 106b is located closer to the outer periphery side and the base end portion 81a side of the chuck body 81 than the first receiving surface 106a. The inclined surface 106c connects the first receiving surface 106a and the second receiving surface 106b. First receiving surface 106a, second receiving surface 106b, and inclined surface 106c are flat surfaces, but inclined surface 106c may be a curved surface that smoothly connects first receiving surface 106a, second receiving surface 106b, and inclined surface 106c without any steps.

[0048] Many roll paper R have a core tube R1 with an inner diameter of 3 inches (75 mm) or 4 inches (100 mm). When the chuck 50 supports the roll paper R, if the core tube R1 has an inner diameter of 3 inches, the first receiving surfaces 106a of the multiple support members 82 receive and support the end of the core tube R1. On the other hand, when the chuck 50 supports the roll paper R, if the core tube R1 has an inner diameter of 4 inches, the second receiving surfaces 106b of the multiple support members 82 receive and support the end of the core tube R1.

[0049] The support members 82 are supported movably along the guide grooves 94 of the chuck body 81. The movement of the support members 82 along the guide grooves 94 is restricted by the attachment portion 91 and the stopper portion 93. When the support members 82 move toward the tip end 81b of the chuck body 81, they move in a direction approaching the center line O1, and when they move toward the base end 81a of the chuck body 81, they move in a direction away from the center line O1. That is, when the chuck 50 moves in the Oa direction, which is the insertion direction into the core tube R1, the support members 82 move toward the base end 81a of the chuck body 81 by the receiving surface 106 coming into contact with and being pressed against the end of the core tube R1. Then, the support members 82 move radially outward of the chuck 50, and the support surface 107 comes into contact with and presses against the inner peripheral surface of the core tube R1. Therefore, the chuck 50 supports the roll paper R so that it can rotate together with the roll paper R, with the receiving surface 106 pressing against the end of the core tube R1, the support surface 107 pressing against the inner surface of the core tube R1, and the protrusion portion 108 biting into the inner surface of the core tube R1 of the roll paper R.

[0050] <Pressing device> FIG. 8 is an explanatory diagram showing the operation of the pressing device.

[0051] As shown in FIG. 4, the pressing device 73 has a pressing plate 75 that can come into contact with the multiple support members 82, and the pressing plate 75 can move the multiple support members 82 toward the tip 81b of the chuck body 81. That is, when the chuck 50 supports the rolled paper R, the multiple support members 82 are located on the base end 81a side of the chuck body 81. Then, when the chuck 50 releases its support of the rolled paper R, the chuck 50 moves relative to the rolled paper R in the direction Ob, which is the direction in which the chuck 50 separates from the core tube R1. Then, the multiple support members 82 remain located on the base end 81a side of the chuck body 81, making it difficult for the chuck 50 to support the rolled paper R again. Therefore, after the chuck 50 releases its support of the rolled paper R, the pressing device 73 uses the pressing plate 75 to move the multiple support members 82 toward the tip 81b of the chuck body 81.

[0052] Furthermore, when the chuck 50 supports the roll paper R, the receiving surfaces 106 of the multiple pressing members of the chuck 50 press the end of the core tube R1, and the support surfaces 107 press the inner peripheral surface of the core tube R1. Therefore, when the chuck 50 is moved in the direction Ob, which is the direction in which the chuck 50 is removed from the core tube R1, the multiple supporting members 82 are difficult to remove from the core tube R1. Therefore, when the chuck 50 releases its support of the roll paper R, the pressing device 73 uses the pressing plate 75 to press the multiple supporting members 82 so as to move them toward the tip portion 81b of the chuck body 81.

[0053] The air cylinders 74 are divided into two chambers by a piston supported movably inside the cylinder. The rod 76 contracts by supplying air to one chamber and discharging air from the other chamber. The rod 76 extends by supplying air to the other chamber and discharging air from one chamber. The switching device 111 switches between the chamber to which air is supplied and the chamber to which air is discharged. The switching device 111 is connected to an air supply source (e.g., a factory air source) 113 via an air supply and exhaust pipe 112. The air supply and exhaust pipe 112 is provided with a flow rate adjustment valve 114. The flow rate adjustment valve 114 can adjust the amount of air (pressure) supplied to each chamber via the switching device 111. That is, the flow rate adjustment valve 114 can adjust the pressing force of the pressing plate 75 via the rod 76 by adjusting the amount of air supplied to the air cylinders 74.

[0054] The control device 115 can control the switching device 111 and the flow rate adjustment valve 114. The control device 115 performs switching control of the switching device 111 and opening / closing control of the flow rate adjustment valve 114 based on a preset program or an operation command from an operator. Here, the control device 115 is a controller, and is realized by, for example, a CPU (Central Processing Unit) or an MPU (Micro Processing Unit) executing various programs stored in a storage unit using a RAM as a working area.

[0055] As shown in Figures 4 and 8, during operation of the roll paper support device 40A (mill roll stand 11), the chuck 50 supports the roll paper R, and the air cylinder 74 has the rod 76 contracted by the third pressure, and the pressure plate 75 is in the retracted position. At time t1, operation stops, and the chuck 50 moves in the direction Ob, which is the direction of removal from the core tube R1, to release the support of the roll paper R. At this time, the air cylinder 74 has the rod 76 extended by the second pressure, and the pressure plate 75 moves forward, and the pressure plate 75 presses the multiple support members 82 to move toward the tip 81b of the chuck body 81. Therefore, the chuck 50 easily removes from the core tube R1, and support of the roll paper R is released.

[0056] At time t2, when the support of the roll paper R by the roll paper support device 40A is released, the next roll paper R to be used is loaded. At this time, the rod 76 of the air cylinder 74 contracts due to the third pressure, and the pressure plate 75 is in the retracted position. At time t3, when loading of the roll paper R into the roll paper support device 40A is completed, the rod 76 of the air cylinder 74 extends due to the first pressure, the pressure plate 75 moves forward, and the pressure plate 75 moves the multiple support members 82 toward the tip 81b of the chuck body 81. As a result, the chuck 50 is able to support the roll paper R with the multiple support members 82.

[0057] Then, the roll paper support device 40A moves the support arms 45, 46, so that the chuck 50 is inserted into the core tube R1 of the roll paper R and supports the roll paper R. At time t4, the device goes into standby mode, and at time t5, the roll paper support device 40A (mill roll stand 11) starts operation. For example, the third pressure of the air cylinder 74 is the pressure when the flow rate adjustment valve 114 is set to 100% opening. The second pressure is the pressure when the flow rate adjustment valve 114 is set to 20% to 50% opening, and is lower than the third pressure. The first pressure is the pressure when the flow rate adjustment valve 114 is set to 20% opening, and is equal to or lower than the second pressure. Each pressure and opening varies depending on the configuration of the pressing device 73, and is not limited to the above-mentioned values.

[0058] That is, the pressing device 73 is capable of pressing the pressing plate 75 against the multiple support members 82, and operates to advance the pressing plate 75 when the chuck 50 supports the rolled paper R and when the chuck 50 is released from the rolled paper R. The pressing force with which the pressing device 73 presses the pressing plate 75 against the multiple support members 82 is equal to or higher when the chuck 50 is released from the rolled paper R than when the chuck 50 supports the rolled paper R.

[0059] <Suction device> 5 and 6, the roll paper support device 40A is provided with a magnet 121 that functions as a force applying device and a suction device. The magnet 121 exerts a force (attraction force) in a direction that brings the multiple support members 82 and the pressing plate 75 closer together. The force (attraction force) of the magnet 121 is weaker than the support force with which the chuck 50 supports the roll paper R. Specifically, the force (attraction force) of the magnet 121 is weaker than the support force that causes the chuck 50 to come off the core tube R1 when the support surfaces 107 of the multiple support members 82 are pressing against the inner circumferential surface of the core tube R1 of the roll paper R.

[0060] The magnets 121 are provided on the multiple support members 82. The magnets 121 are rectangular parallelepiped-shaped and are arranged on the side surfaces of the multiple support members 82. That is, as shown in FIG. 7, the support member 82 has a moving part 101 and a supporting part 102, and the moving part 101 has an attachment support part 103 and a flange part 104. The magnets 121 are fixed to one side surface 104a of the flange part 104. On the other hand, the pressing plate 75 is a magnetic material and can be attracted by the magnets 121 provided on the multiple support members 82. Although the magnets 121 are rectangular parallelepiped-shaped, the shape is not limited to this. The magnets 121 may have any shape as long as they can attract the pressing plate 75. However, it is preferable that the surface of the magnets 121 that contacts the pressing plate 75 be flat to improve the mounting property with the pressing plate 75.

[0061] When the chuck 50 moves in the Oa direction, which is the insertion direction into the core tube R1, the pressing device 73 presses the multiple support members 82 toward the tip end 81b of the chuck body 81 by the pressing plate 75, and the multiple support members 82 are in a position where they abut against the stopper portion 93. At this time, the multiple support members 82 are attracted to the pressing plate 75 by the magnet 121. Then, as the chuck 50 is inserted into the inside of the core tube R1, the receiving surfaces 106 of the multiple support members 82 come into contact with and are pressed against the end of the core tube R1, and the multiple support members 82 move along the guide groove 94 to the base end 81a of the chuck body 81. Then, the multiple support members 82 move radially outward of the chuck 50, and the support surfaces 107 come into contact with and press against the inner peripheral surface of the core tube R1. That is, the multiple support members 82 move together with the pressing plate 75 by the magnet 121.

[0062] FIG. 9 is a perspective view showing a mounting structure of the magnet to the support member.

[0063] As shown in FIG. 9, the support member 82 has a moving part 101, and the moving part 101 has an attachment support part 103 and a flange part 104. The flange part 104 has a first receiving surface 106a, a second receiving surface 106b, and an inclined surface 106c as a receiving surface 106. The flange part 104 also has a pair of side surfaces 104a that are perpendicular to the receiving surface 106. The flange part 104 also has a bottom surface 104b on the opposite side of the receiving surface 106. The bottom surface 104b is a surface that faces the pressing plate 75 (see FIG. 5). The magnet 121 having a rectangular parallelepiped shape is fixed to one side surface 104a of the flange part 104. In this case, it is preferable that the end surface of the magnet 121 is continuous with the bottom surface 104b of the flange part 104 without any step. However, the magnet 121 may protrude from the bottom surface 104 b of the flange portion 104 toward the pressing plate 75 side.

[0064] The mounting structure of magnet 121 to support member 82 is not limited to the above. Fig. 10 is a perspective view showing a first modified example of the mounting structure of magnet to support member, and Fig. 11 is a perspective view showing a second modified example of the mounting structure of magnet to support member.

[0065] 10, the magnet 121 having a rectangular parallelepiped shape is fixed to the bottom surface 104b of the flange portion 104. In this case, the magnet 121 protrudes from the bottom surface 104b of the flange portion 104 toward the pressing plate 75 side.

[0066] 11, the magnet 121 having a rectangular parallelepiped shape is disposed on the bottom surface 104b side of the flange portion 104. The flange portion 104 has a recess 104c having the same shape as the magnet 121 provided on the bottom surface 104b. The magnet 121 is fixed so as to be housed in the recess 104c. In this case, it is preferable that the end face of the magnet 121 is continuous with the bottom surface 104b of the flange portion 104 without any step. However, the magnet 121 may protrude toward the pressing plate 75 side from the bottom surface 104b of the flange portion 104.

[0067] [Method of supporting roll paper using roll paper support device] FIG. 12 is a schematic diagram showing the state when the chuck begins to be inserted into the roll paper, FIG. 13 is a schematic diagram showing the state during insertion of the chuck into the roll paper, and FIG. 14 is a schematic diagram showing the rotated state after the chuck has been inserted into the roll paper.

[0068] As shown in FIG. 3, the roll paper R is configured by winding a predetermined length of continuous paper R2 around the outer periphery of a core tube R1. Transport cart The paper roll R is mounted on the second support portion 45b, 46b of the pair of support arms 45, 46 and positioned between the pair of support arms 45, 46. Then, the support arms 45, 46 are lowered, and the center of the paper roll R (center line O2) is aligned with the center of the chucks 49, 50 (center line O1). In this state, the screw shaft drive device 48 is driven to rotate the screw shaft 47, and the support arms 45, 46 are moved closer to each other. Then, the chucks 49, 50 attached to the second support portions 45b, 46b of the pair of support arms 45, 46 are inserted into the core tube R1 of the paper roll R and support the paper roll R. The operation of the chucks 49, 50 will be explained below, but since each chuck 49, 50 has the same operation, only one chuck 50 will be explained in detail.

[0069] 12, the pressing device 73 supplies air to the multiple air cylinders 74 to move the pressing plate 75 forward and move the multiple support members 82 in the direction Oa. The multiple support members 82 are pressed by the pressing plate 75 to a position where they abut against the stopper portion 93 of the chuck body 81. In this state, the chuck 50 moves in the direction Oa relative to the roll paper R, which is the insertion direction into the core tube R1. At this time, the center line O2 of the roll paper R is shifted vertically downward by a predetermined height h with respect to the center line O1 of the chuck 50.

[0070] In this state, when the chuck 50 moves in the Oa direction, the stopper portion 93 of the chuck 50 is first inserted into the inside of the core tube R1, and then the support portions 102 of the multiple support members 82 are inserted into the inside of the core tube R1. At this time, a gap is secured between the support surface 107 of each support portion 102 of the chuck 50 and the inner peripheral surface of the core tube R1. Then, when the chuck 50 moves further in the Oa direction, as shown in FIG. 13, the first receiving surface 106a of the flange portion 104 of the multiple support members 82 of the chuck 50 abuts against the end surface of the core tube R1. However, since the center line O2 of the roll paper R is shifted by a predetermined height h from the center line O1 of the chuck 50, the first receiving surface 106a of any of the multiple support members 82 does not abut against the end surface of the core tube R1, and a gap is generated.

[0071] As the chuck 50 continues to move in the Oa direction, the support member 82, whose first receiving surface 106a is in contact with the end face of the core tube R1, receives a pressing force from the core tube R1 and moves in the Ob direction. The support member 82 moves against the pressing force of the air cylinder 74 via the pressing plate 75. At this time, the multiple support members 82 are all attracted to the pressing plate 75 by the magnet 121, so they move in the Ob direction in synchronization. That is, the support members 82 whose first receiving surface 106a is not in contact with the end face of the core tube R1 also move in the Ob direction due to the attraction force of the magnet 121. At this time, the multiple support members 82 move radially outward of the chuck 50 while moving in the Ob direction, and the support surface 107 approaches the inner peripheral surface of the core tube R1.

[0072] As the chuck 50 continues to move in the Oa direction, the support members 82 move radially outward while moving in the Ob direction, as shown in Fig. 14. Then, the gap between the support surfaces 107 of the support members 82 and the inner peripheral surface of the core tube R1 decreases, and the support surfaces 107 come into contact with the inner peripheral surface of the core tube R1. At this time, the support surfaces 107 of the support members 82 move radially outward evenly, so that the support surfaces 107 press against the inner peripheral surface of the core tube R1, correcting the position of the rolled paper R. In other words, the rolled paper R is pushed vertically upward by the support members 82 of the chuck 50, and the center (center line O2) approximately coincides with the center (center line O1) of the chuck 50.

[0073] When the chuck 50 supports the roll paper R, all of the receiving surfaces 106 (first receiving surfaces 106a) of the multiple support members 82 contact the end surface of the core tube R1, and all of the support surfaces 107 contact the inner peripheral surface of the core tube R1. The chuck 50 supports the roll paper R at a position where the center lines O1 and O2 coincide. Therefore, a specific support member 82 will not bite into the roll paper R and damage the continuous paper R2.

[0074] At this time, the chuck 50 stops moving in the Oa direction. In the chuck 50, the receiving surfaces 106 (first receiving surfaces 106a) of the multiple support members 82 press the end faces of the core tube R1, and the supporting surfaces 107 press the inner peripheral surface of the core tube R1. Therefore, the chuck 50 supports the rolled paper R so that the rolled paper R can rotate integrally due to the frictional resistance between the supporting surfaces 107 and the inner peripheral surface of the core tube R1. At this time, the chucks 49 and 50 support the rolled paper R concentrically, so that the rolled paper R does not become eccentric, and the web of the rolled paper R is not broken by the centrifugal force acting during rotation. After that, the pressing device 73 supplies air to the multiple air cylinders 74 to move the pressing plate 75 backward. At this time, the pressing plate 75 moves backward against the attraction force of the magnets 121 and separates from the multiple support members 82.

[0075] 3, the roll paper support device 40A supports the roll paper R so that it can rotate integrally with the roll paper R by inserting chucks 49, 50 attached to the second support portions 45b, 46b of the pair of support arms 45, 46 into the core tube R1 of the roll paper R. The roll paper R is rotatably supported by the pair of support arms 45, 46 via the chucks 49, 50.

[0076] [Second embodiment] Fig. 15 is a cross-sectional view showing the main parts of the roll paper support device of the second embodiment, and Fig. 16 is a front view showing the main parts of the roll paper support device. Note that components having the same functions as those in the above-mentioned embodiments are given the same reference numerals and detailed explanations are omitted.

[0077] 15 and 16, the roll paper support device 40A is provided with a magnet 122 that functions as a force applying device and a suction device. The magnet 122 exerts a force (attraction force) in a direction that brings the support members 82 and the pressing plate 75 closer together. The force (attraction force) of the magnet 122 is weaker than the support force with which the chuck 50 supports the roll paper R. Specifically, the force (attraction force) of the magnet 122 is weaker than the support force that would cause the chuck 50 to come off the core tube R1 when the support surfaces 107 of the support members 82 are pressing against the inner circumferential surface of the core tube R1 of the roll paper R.

[0078] The magnet 122 is provided on the pressing plate 75. The pressing plate 75 is formed with an opening 78 through which the chuck body 81 can be freely inserted. The magnet 122 is provided along the edge of the opening 78. In this embodiment, the opening 78 is circular, and the magnet 122 is ring-shaped. The magnet 122 is provided on the pressing plate 75. Inner circumferential surface of opening 78 The support members 82 are arranged along the line 81. On the other hand, the support members 82 are made of a magnetic material and can be attracted by a magnet 122 provided on the pressing plate 75. The shape of the magnet 122 is not limited to the above. The magnet 122 has a ring shape, but may be, for example, an integrated ring shape, or a ring shape made up of multiple divided members. The magnet 122 is also Opening 78Furthermore, when the opening 78 is polygonal, the magnets 122 are provided continuously or intermittently along the edge of the opening 78.

[0079] When the chuck 50 moves in the Oa direction, which is the insertion direction into the core tube R1, the pressing device 73 presses the multiple support members 82 toward the tip end 81b of the chuck body 81 by the pressing plate 75, and the multiple support members 82 are in a position where they abut against the stopper portion 93. At this time, the multiple support members 82 are attracted to the pressing plate 75 by the magnet 122. Then, as the chuck 50 is inserted into the inside of the core tube R1, the receiving surfaces 106 of the multiple support members 82 come into contact with and are pressed against the end of the core tube R1, and the multiple support members 82 move along the guide groove 94 to the base end 81a of the chuck body 81. Then, the multiple support members 82 move radially outward of the chuck 50, and the support surfaces 107 come into contact with and press against the inner peripheral surface of the core tube R1. That is, the multiple support members 82 move together with the pressing plate 75 by the magnet 122.

[0080] The action of the magnet 122 as a force applying device and an attraction device is similar to that in the first embodiment, and a description thereof will be omitted.

[0081] [Third embodiment] 17 is a cross-sectional view showing the main parts of a roll paper support device of the third embodiment. Note that members having the same functions as those in the above-mentioned embodiments are given the same reference numerals and detailed explanations are omitted.

[0082] As shown in FIG. 17, the roll paper support device 40A has a suction section 123 serving as a force applying device and a suction device, a suction tube 124, and a blower (negative pressure generating device) 125.

[0083] The suction portion 123 is a recess that opens toward the chuck 50 and is provided along the periphery of the opening 78 in the pressing plate 75. The suction portion 123 may be a groove-shaped portion that extends along the periphery of the opening 78 in the pressing plate 75, or may be a plurality of recesses that are spaced apart along the periphery of the opening 78 in the pressing plate 75. The suction portion 123 is connected to the blower 125 via a suction pipe 124. The control device 115 can drive and control the blower 125. When the blower 125 is activated, a suction force (negative pressure) is generated, and the generated suction pressure acts on the suction portion 123 via the suction pipe 124. The suction force of the suction portion 123 is a force in a direction that brings the plurality of support members 82 and the pressing plate 75 closer to each other. The suction force of the suction portion 123 is lower than the support force with which the chuck 50 supports the roll paper R. Specifically, the suction force of the suction unit 123 is lower than the support force that causes the chuck 50 to separate from the core tube R1 when the support surfaces 107 of the multiple support members 82 press against the inner circumferential surface of the core tube R1 of the roll paper R. When the suction force of the suction unit 123 is not needed, the blower 125 may be stopped.

[0084] When the chuck 50 moves in the Oa direction, which is the insertion direction into the core tube R1, the pressing device 73 presses the multiple support members 82 toward the tip end 81b of the chuck body 81 by the pressing plate 75, and the multiple support members 82 are in a position where they abut against the stopper portion 93. At this time, the control device 115 operates the blower 125 to generate a suction force in the suction portion 123. Then, the multiple support members 82 are sucked to the pressing plate 75 by the suction portion 123. Then, as the chuck 50 is inserted into the inside of the core tube R1, the receiving surfaces 106 of the multiple support members 82 come into contact with and are pressed against the end of the core tube R1, and the multiple support members 82 move along the guide groove 94 to the base end 81a of the chuck body 81. Then, the multiple support members 82 move radially outward of the chuck 50, and the support surfaces 107 come into contact with and press against the inner peripheral surface of the core tube R1. That is, the plurality of support members 82 move integrally with the pressing plate 75 due to the suction force of the suction portion 123 .

[0085] The functions of the suction unit 123, suction pipe 124, and blower 125 as a force applying device and a suction device are similar to those in the first embodiment, and therefore a description thereof will be omitted.

[0086] [Fourth embodiment] Fig. 18 is a cross-sectional view showing the main parts of the roll paper support device of the fourth embodiment, Fig. 19 is a front view showing the chuck, and Fig. 20 is a front view showing the operation of the chuck. Note that members having the same functions as those in the above-mentioned embodiments are given the same reference numerals and detailed explanations are omitted. Also, in Fig. 19 and Fig. 20, the stopper portion 93 is shown with a two-dot chain line to make the shape of the chuck easier to understand.

[0087] As shown in FIGS. 18 and 19, the chuck 50 includes a chuck body 81 and a plurality of support members 82. The chuck body 81 has an overall conical shape. The chuck body 81 has a plurality of guide grooves 94 provided along the axial direction. The plurality of support members 82 are supported in the guide grooves 94 of the chuck body 81 so as to be freely movable. The plurality of support members 82 have a receiving surface 106 and a supporting surface 107. The receiving surface 106 of the plurality of support members 82 is capable of contacting an end face of the core tube R1, and the supporting surface 107 is capable of contacting an inner peripheral surface of the core tube R1.

[0088] The chuck 50 has a first connecting member 131 and a second connecting member 132 as connecting members. The first connecting member 131 and the second connecting member 132 extend from the multiple support members 82 in a direction intersecting the movement direction (center line O1 direction) of the support members 82. The first connecting member 131 and the second connecting member 132 move the multiple support members 82 together in the axial direction (center line O1 direction) of the chuck body 81. At this time, the first connecting member 131 and the second connecting member 132 move the multiple support members 82 synchronously in the radial direction of the chuck body 81.

[0089] Specifically, the first connecting member 131 extends from one side surface of each support member 82 in a direction perpendicular to the side surface. The second connecting member 132 extends from the other side surface of each support member 82 in a direction perpendicular to the side surface. The first connecting member 131 and the second connecting member 132 are rectangular plate materials. The first connecting member 131 and the second connecting member 132 are arranged to be shifted by a predetermined distance in the axial direction (center line O1 direction) of the chuck body 81. The first connecting member 131 and the second connecting member 132 of adjacent support members 82 are arranged to overlap with each other in the axial direction of the chuck body 81. The second connecting member 132 overlaps with the first connecting member 131 of adjacent support members 82 so as to be arranged on the tip portion 81b side of the chuck body 81.

[0090] 19 and 20, the support members 82 are supported movably along the guide grooves 94 of the chuck body 81. When the support members 82 move toward the tip end 81b of the chuck body 81, they move in a direction approaching the center line O1. At this time, the support members 82 are connected by overlapping first connecting members 131 and second connecting members 132, so they move together in the axial direction of the chuck body 81 and synchronously move along the axial direction of the chuck body 81. Radial inward 19. On the other hand, when the plurality of support members 82 move toward the base end portion 81a of the chuck body 81, they move in a direction away from the center line O1. At this time, since the plurality of support members 82 are connected by overlapping first connecting members 131 and second connecting members 132, they move together in the axial direction of the chuck body 81 and synchronously move toward the base end portion 81a of the chuck body 81. Radially outward The movement will result in the state shown in Figure 20.

[0091] 18, when the chuck 50 moves in the direction Oa, which is the direction of insertion into the core tube R1, with the pressing plate 75 pressing the multiple support members 82 in the direction Oa, the receiving surfaces 106 of the multiple support members 82 come into contact with and press against the end face of the core tube R1. If the center line O1 of the chuck 50 and the center line O2 of the roll of paper R are misaligned at this time, the first receiving surface 106a of any of the multiple support members 82 will not come into contact with the end face of the core tube R1, creating a gap.

[0092] As the chuck 50 continues to move in the Oa direction, the support members 82 whose receiving surfaces 106 are in contact with the end face of the core tube R1 move in the Ob direction under pressure from the core tube R1. At this time, the support members 82 are all connected by the first connecting member 131 and the second connecting member 132, so they move in the Ob direction in synchronization. That is, the support members 82 whose receiving surfaces 106 are not in contact with the end face of the core tube R1 also move in the Ob direction by the first connecting member 131 and the second connecting member 132. At this time, the support members 82 move radially outward of the chuck 50 while moving in the Ob direction, and the support surfaces 107 approach the inner peripheral surface of the core tube R1.

[0093] As the chuck 50 continues to move in the Oa direction, the multiple support members 82 move radially outward while moving in the Ob direction, and the support surfaces 107 come into contact with the inner circumferential surface of the core tube R1. At this time, the support surfaces 107 of the multiple support members 82 move radially outward evenly, so that the support surfaces 107 press against the inner circumferential surface of the core tube R1, correcting the position of the rolled paper R. In other words, the rolled paper R is pushed vertically upward by the multiple support members 82 of the chuck 50, and the center (center line O2) approximately coincides with the center (center line O1) of the chuck 50.

[0094] When the chuck 50 supports the roll paper R, all of the receiving surfaces 106 of the multiple support members 82 contact the end face of the core tube R1, and all of the support surfaces 107 contact the inner circumferential surface of the core tube R1. The chuck 50 supports the roll paper R at a position where the center lines O1 and O2 are aligned. This prevents a specific support member 82 from digging into the roll paper R and damaging the continuous paper R2.

[0095] The connecting members 131 and 132 are not limited to the above-mentioned shapes. Fig. 21 is a front view showing a modified example of the chuck. In Fig. 21, the stopper portion 93 is shown by a two-dot chain line to make the shape of the chuck easier to understand.

[0096] 21, the chuck 50 has a first connecting member 133 and a second connecting member 134 as connecting members. The first connecting member 133 and the second connecting member 134 extend from the multiple support members 82 in a direction intersecting the moving direction of the support members 82 (the direction of the center line O1). The first connecting member 133 and the second connecting member 134 move the multiple support members 82 together in the axial direction of the chuck body 81 (the direction of the center line O1). At this time, the first connecting member 133 and the second connecting member 134 move the multiple support members 82 synchronously in the radial direction of the chuck body 81.

[0097] Specifically, the first connecting member 133 extends from one side surface of each support member 82 along the circumferential direction of the chuck body 81. The second connecting member 134 extends from the other side surface of each support member 82 along the circumferential direction of the chuck body 81. The first connecting member 133 and the second connecting member 134 are curved plate materials. The first connecting member 133 and the second connecting member 134 are arranged to be shifted by a predetermined distance in the axial direction (direction of the center line O1) of the chuck body 81. Adjacent support members 82 are arranged such that the tip end of the first connecting member 133 and the tip end of the second connecting member 134 overlap in the axial direction of the chuck body 81.

[0098] The functions of the first connecting member 133 and the second connecting member 134 are similar to those of the first connecting member 131 and the second connecting member 132 described above, and therefore a description thereof will be omitted.

[0099] [Effects of this embodiment] The roll paper support device according to the first aspect includes a pair of support arms 45, 46 supported for movement along the axial direction of a rotation shaft 43 of frames 41, 42, a screw shaft drive unit (drive unit) 48 that moves the pair of support arms 45, 46 toward and away from each other, and a pair of chucks 49, 50 rotatably attached to the tips of the pair of support arms 45, 46 and capable of supporting the roll paper R. The chucks 49, 50 have an outer diameter that decreases from the base end to the tip end, and have a number of guide grooves (guide portions) 94 on their outer circumferential surfaces along the axial direction. The apparatus includes a chuck body 81 provided with a chuck 82, a plurality of support members 82 that are supported in a freely movable manner in a plurality of guide grooves 94 and have a receiving surface (receiving portion) 106 that can contact the end of the roll paper R and a support surface (support portion) 107 that can contact the inner surface of the roll paper R, a pressing device (moving device) 73 that has a pressing plate (moving member) 75 that can contact the plurality of support members 82 and can move the plurality of support members 82 toward the tip end side by the pressing plate 75, and a force applying device that applies a force in a direction that brings the plurality of support members 82 and the pressing plate 75 closer together.

[0100] In the roll paper support device of the first aspect, when the screw shaft drive device 48 moves the pair of support arms 45, 46 in a direction approaching each other, the chucks 49, 50 are inserted into the core tube R1 of the roll paper R, thereby supporting the roll paper R so that it can rotate integrally. At this time, the pressing device 73 presses the multiple support members 82 via the pressing plate 75, and the force applying device applies a force in a direction that brings the multiple support members 82 and the pressing plate 75 closer to each other. Therefore, the multiple support members 82 can have the receiving surface 106 appropriately press the end face of the core tube R1 of the roll paper R, and the support surface 107 appropriately press the inner circumferential surface of the core tube R1 of the roll paper R.

[0101] That is, when the center line O1 of the chuck 50 and the center line O2 of the roll paper R are misaligned, the receiving surface 106 of one of the multiple support members 82 does not abut the end face of the core tube R1, and a gap occurs. Then, when the chuck 50 is inserted into the inside of the core tube R1, the support member 82 whose receiving surface 106 abuts the end face of the core tube R1 moves along the guide groove 94. At this time, the support member 82 whose receiving surface 106 does not abut the end face of the core tube R1 also moves together with the pressing plate 75. Then, the multiple support members 82 move radially outward while moving in the axial direction of the chuck 50, so that each support surface 107 presses the inner peripheral surface of the core tube R1 evenly, and the roll paper R is supported with its center (center line O2) coinciding with the center (center line O1) of the chuck 50. As a result, damage to the rolled paper R when the chucks 49, 50 support the rolled paper R can be suppressed, and the rolled paper R can be prevented from being supported with its center (center lines O1, O2) misaligned.

[0102] The roll paper support device of the second aspect is the roll paper support device of the first aspect, furthermore, the force applied by the force application device is lower than the supporting force with which the support surface 107 comes into contact with the inner circumferential surface of the core tube R1 of the roll paper R and the chucks 49, 50 support the roll paper R. As a result, after the chucks 49, 50 support the roll paper R, the pressing plate 75 can be appropriately released from the multiple support members 82, and the force application device does not interfere with the rotation of the roll paper R.

[0103] The roll paper support device according to the third aspect is the roll paper support device according to the first or second aspect, further comprising a suction device in which the force applying device has a suction device, and the suction device is provided on at least one of the multiple support members 82 and the pressure plate 75. This makes it easy to maintain the multiple support members 82 and the pressure plate 75 in a state close to each other.

[0104] The roll paper support device according to the fourth aspect is the roll paper support device according to the third aspect, and further comprises a suction device having magnets 121, 122 provided on at least one of the multiple support members 82 and the pressure plate 75. This simplifies the configuration of the force application device.

[0105] The roll paper support device according to the fifth aspect is the roll paper support device according to the fourth aspect, further comprising: a plurality of support members 82 each having a flange portion 104 that protrudes radially outward from the chuck body 81; and a magnet 121 is disposed on the flange portion 104. This improves the ease with which the magnet 121 can be attached to the support members 82.

[0106] The roll paper support device of the sixth aspect is the roll paper support device of the fourth aspect, with the addition that an opening 78 is formed in the pressure plate 75 through which the chuck body 81 can be freely inserted, and a magnet 122 is provided along the edge of the opening 78. This reduces the number of magnets 122, which reduces manufacturing costs and makes it easier to attach to the pressure plate 75.

[0107] The roll paper support device according to the seventh aspect is the roll paper support device according to the third aspect, and further includes, as a suction device, a suction unit 123 provided on the pressing plate 75, and a blower (negative pressure generating device) 125 that generates negative pressure to act on the suction unit 123. This allows the suction unit 123 to properly adsorb the multiple support members 82 to the pressing plate 75.

[0108] The roll paper support device according to the eighth aspect is the roll paper support device according to the first to seventh aspects, and further includes, as the receiving surface 106, a first receiving surface 106a located toward the center and tip end of the chuck body 81, and a second receiving surface 106b located closer to the outer periphery and base end of the chuck body 81 than the first receiving surface 106a. This makes it possible to support roll paper R with different core tube inner diameters.

[0109] The roll paper support device of the ninth aspect is the roll paper support device of the first to eighth aspects, further comprising a pressing device 73 that can press the pressing plate 75 against the multiple support members 82, and operates when the chucks 49, 50 support the roll paper R and when the chucks 49, 50 release the roll paper R. This allows the pressing plate 75 to be separated from the multiple support members 82 when the roll paper R supported by the chucks 49, 50 rotates.

[0110] The roll paper support device of the tenth aspect is the roll paper support device of the ninth aspect, except that the pressure applied by the pressing device 73 to press the pressing plate 75 against the multiple support members 82 when the chucks 49, 50 are released from the roll paper R is equal to or higher than the pressure applied when the chucks 49, 50 are supporting the roll paper R. As a result, when releasing the chucks 49, 50 from the roll paper R, the pressing force of the pressing plate 75 moves the multiple support members 82, making it easy to remove the chucks 49, 50.

[0111] The chuck for roll paper in the eleventh aspect comprises a chuck body 81 having an outer diameter that decreases from the base end to the tip end and having multiple guide grooves (guide portions) 94 along the axial direction on its outer peripheral surface, multiple support members 82 that are supported for movement by the multiple guide grooves 94 and have a receiving surface (receiving portion) 106 that can contact the end of the roll paper R and a support surface (support portion) 107 that can contact the inner peripheral surface of the roll paper R, and multiple connecting members 131, 132, 133, 134 that extend from the multiple support members 82 in a direction intersecting the direction of movement of the support members 82 and move the multiple support members 82 together in the axial direction of the chuck body 81 and move the multiple support members 82 synchronously in the radial direction of the chuck body 81.

[0112] According to the eleventh aspect Roll Paper ChuckAccording to the method, the chucks 49 and 50 are inserted into the core tube R1 of the rolled paper R to support the rolled paper R so that the rolled paper R can rotate together with the chucks 49 and 50. When the center line O1 of the chuck 50 and the center line O2 of the rolled paper R are misaligned, the receiving surface 106 of one of the support members 82 does not contact the end face of the core tube R1, and a gap is generated. Then, when the chuck 50 is inserted into the inside of the core tube R1, the support member 82 whose receiving surface 106 is in contact with the end face of the core tube R1 moves along the guide groove 94. At this time, the support member 82 whose receiving surface 106 is not in contact with the end face of the core tube R1 due to the connecting members 131, 132, 133, and 134 also moves together with the pressing plate 75. The multiple support members 82 move radially outward while moving in the axial direction of the chuck 50, so that each support surface 107 presses evenly against the inner peripheral surface of the core tube R1, and the rolled paper R is supported with its center (center line O2) approximately aligned with the center (center line O1) of the chuck 50. As a result, damage to the rolled paper R when the chucks 49, 50 support the rolled paper R can be suppressed, and support of the rolled paper R with the center (center lines O1, O2) misaligned can be suppressed.

[0113] The roll paper chuck according to the twelfth aspect is the same as the roll paper chuck according to the eleventh aspect. Roll paper chuck and further includes first connecting members 131, 133 provided on one side of the support member 82, and second connecting members 132, 134 provided on the other side of the support member 82 and disposed offset in the axial direction of the chuck body 81 with respect to the first connecting members 131, 133, and adjacent support members 82 are disposed such that the first connecting members 131, 133 and the second connecting members 132, 134 overlap in the axial direction of the chuck body 81. This allows the multiple support members 82 to move in an appropriate synchronized manner.

[0114] The corrugating machine (corrugated cardboard sheet manufacturing device) 10 according to the thirteenth embodiment includes roll paper support devices 40A, 40B according to the first to tenth embodiments that support a roll paper of a front liner (first liner) A, a roll paper of a back liner (second liner) C, and a roll paper of a core paper that becomes a core B, a single facer 15 that manufactures a single-sided cardboard sheet D by bonding a back liner C to a corrugated core B, and a double facer that manufactures a double-sided cardboard sheet by bonding a front liner (first liner) A to the core side of the single-sided cardboard sheet D. As a result, the roll paper support devices 40A, 40B can prevent damage to the roll paper R when the chucks 49, 50 support the roll paper R, and can also prevent the roll paper R from being supported with the center (center lines O1, O2) misaligned.

[0115] In the above embodiment, the configuration of the roll paper support devices 40A, 40B and the shape of the chucks 49, 50 may be set appropriately depending on the roll paper R being used, and are not limited to those described in the embodiment. [Explanation of symbols]

[0116] 10 Corrugating machine (corrugated cardboard sheet manufacturing equipment) 11 Mill Roll Stand 12 Preheater 13 Mill Roll Stand 14 Preheater 15 Single Facer 16 Bridge 17 Mill Roll Stand 18 Preheater 19 Glue Machine 20 Double Facer 21 Rotary Shaft 22 Slittascorara 23 Cutoff 24 Defective product ejection device 25 Stacker 31, 32, 33, 34 Preheat roll 40A, 40B Roll paper support device 41,42 Frame 43 Rotating shaft (support shaft) 44 Rotary shaft drive unit 45,46 Support arm 45a,46a 1st support part 45b,46b 2nd support part 47 Screw shaft 48 Screw shaft drive unit (drive unit) 49,50 Chuck (Chuck for roll paper) 51 Keys 52,53 Support hole 54,55 Keyway 56,57 Support member 58,59 Threaded part 61 Detection sensor 62 Operation control panel (control device) 71 Rotational Axis 72 Connecting members 73 Pressing device (moving device) 74 Air Cylinder 75 Pressure plate (moving part) 76 Rod 77 Connecting members 78 Opening 81 Chuck body 82 Support member 91 Mounting part 92 Main body 93 Stopper part 94 Guide groove (guide part) 96 Connecting rod 101 Mobile Division 102 Support part 103 Mounting support part 104 Flange part 104a side 104b Bottom 104c Recess 106 Receiving surface (receiving part) 106a: First receiving surface (first receiving portion) 106b Second receiving surface (second receiving portion) 106c slope 107 Support surface (support part) 108 Protrusion 111 Switching Device 112 Air supply and exhaust pipe 113 Air Supply Source 114 Flow control valve 115 Control device 121,122 Magnet 123 Suction part 124 Suction tube 125 Blower (negative pressure generating device) 131, 133 First connecting member (connecting member) 132, 134 Second connecting member (connecting member) A. Surface liner (first liner) B Core C Back liner (second liner) D Single-sided corrugated sheet E. Continuous double-sided corrugated sheet F Double-sided corrugated cardboard sheet R Roll paper R1 core tube R2 Continuous paper O1,O2 center line

Claims

1. A pair of support arms supported so as to be movable along the axial direction of the support shaft of the frame; a drive device for moving the pair of support arms closer to and away from each other; a pair of chucks rotatably attached to the tip ends of the pair of support arms and capable of supporting the roll paper; Equipped with The chuck is A chuck body having an outer diameter that decreases from a base end portion to a tip end portion, and a plurality of guide portions provided on an outer peripheral surface along an axial direction; a plurality of support members that are movably supported by the plurality of guide sections and have receiving sections that can contact the ends of the roll paper and support sections that can contact the inner circumferential surface of the roll paper; having a moving device having a moving member capable of coming into contact with the plurality of support members and capable of moving the plurality of support members toward the tip end portion by the moving member; a force applying device that applies a force in a direction in which the plurality of support members and the moving member approach each other; Equipped with The force applying device has a suction device, and the suction device is provided on at least one of the plurality of support members and the moving member. Roll paper support device.

2. The suction device has a magnet provided on at least one of the plurality of support members and the moving member.

2. The roll paper support device according to claim 1.

3. The plurality of support members each have a flange portion protruding radially outward from the chuck body, and the magnet is disposed on the flange portion.

3. The roll paper support device according to claim 2.

4. The moving member has an opening through which the chuck body can be freely inserted, and the magnet is provided along an edge of the opening.

3. The roll paper support device according to claim 2.

5. The suction device includes a suction unit provided on the moving member and a negative pressure generating device that generates negative pressure and applies it to the suction unit.

2. The roll paper support device according to claim 1.

6. A pair of support arms supported so as to be movable along the axial direction of the support shaft of the frame; a drive device for moving the pair of support arms closer to and away from each other; a pair of chucks rotatably attached to the tip ends of the pair of support arms and capable of supporting the roll paper; Equipped with The chuck is A chuck body having an outer diameter that decreases from a base end portion to a tip end portion, and a plurality of guide portions provided on an outer peripheral surface along an axial direction; a plurality of support members that are movably supported by the plurality of guide sections and have receiving sections that can contact the ends of the roll paper and support sections that can contact the inner circumferential surface of the roll paper; having a moving device having a moving member capable of coming into contact with the plurality of support members and capable of moving the plurality of support members toward the tip end portion by the moving member; a force applying device that applies a force in a direction in which the plurality of support members and the moving member approach each other; Equipped with The receiving portion has a first receiving portion located on the center side and the tip end side of the chuck body, and a second receiving portion located on the outer periphery side and the base end side of the chuck body with respect to the first receiving portion. Roll paper support device.

7. A pair of support arms supported so as to be movable along the axial direction of the support shaft of the frame; a drive device for moving the pair of support arms closer to and away from each other; a pair of chucks rotatably attached to the tip ends of the pair of support arms and capable of supporting the roll paper; Equipped with The chuck is A chuck body having an outer diameter that decreases from a base end portion to a tip end portion, and a plurality of guide portions provided on an outer peripheral surface along an axial direction; a plurality of support members that are movably supported by the plurality of guide sections and have receiving sections that can contact the ends of the roll paper and support sections that can contact the inner circumferential surface of the roll paper; having a moving device having a moving member capable of coming into contact with the plurality of support members and capable of moving the plurality of support members toward the tip end portion by the moving member; a force applying device that applies a force in a direction in which the plurality of support members and the moving member approach each other; Equipped with the moving device is capable of pressing the moving member against the plurality of support members and is actuated when the chuck supports the roll paper and when the chuck is released from the roll paper. Roll paper support device.

8. a pressing force applied by the moving device to press the moving member against the plurality of support members when the chuck is releasing the chuck from the roll paper is equal to or higher than when the chuck is releasing the chuck, compared to when the chuck is supporting the roll paper; 8. The roll paper support device according to claim 7.

9. 2. The roll paper support device according to claim 1, which supports a first liner roll paper, a second liner roll paper, and a core paper roll that serves as a center core; a single facer that laminates the second liner to the corrugated core to produce a single-faced corrugated cardboard sheet; a double facer that laminates the first liner to the core side of the single-faced cardboard sheet to produce a cardboard sheet; A cardboard sheet manufacturing apparatus comprising:

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