JP2021075361A - Roll paper chuck, roll paper retainer and apparatus for producing corrugated board sheet - Google Patents

Abstract

To provide a roll paper chuck, roll paper retainer and apparatus for producing a corrugated board sheet that is adapted to improve the workability in roll-paper retaining work by properly holding roll paper regardless of the type of a core tube.SOLUTION: A roll paper chuck, for retaining roll paper by being inserted into a core tube thereof, comprises a chuck body that has a conical shape and is provided with a plurality of guide portions extending along an axial direction on an outer peripheral surface, a plurality of support members that are movably supported on the chuck body by the plurality of guide portions and has a receiving face portion with which an end of the core tube can contact, a support face portion that is provided on the support member and can surface-contact an inner peripheral surface of the core tube, and an engagement portion that is provided in a manner radially outwardly protruding from the support face portion on the support member and can contact the inner peripheral surface of the core tube.SELECTED DRAWING: Figure 8

Description

The present disclosure relates to a roll paper chuck for supporting roll paper, a roll paper support device including a roll paper chuck, and a corrugated board sheet manufacturing device including a roll paper support device.

The corrugated machine as a corrugated cardboard sheet manufacturing apparatus includes a single facer and a double facer. In the single facer, the core paper is processed into a corrugated shape, and the back liner is attached to form a single-sided corrugated cardboard sheet. In the double facer, a front liner is attached to a single-sided corrugated cardboard sheet to form a double-sided corrugated cardboard sheet. The continuous double-sided corrugated board sheet manufactured by the double facer is cut to a predetermined width by a slitter scorer and cut to a predetermined length by a cutoff device to manufacture a corrugated board sheet.

The single facer and double facer each have a mill roll stand that supports the roll paper. The mill roll stand rotatably supports roll paper such as core paper, back liner, and front liner. The mill roll stand has a pair of arms. The pair of arms are supported by the frame so as to be close to and separated from each other, and have a chuck at the tip. By bringing the pair of arms close to each other, each chuck is inserted into the core tube of the roll paper and sandwiched to support the roll paper.

The chuck is inserted into the core tube of the roll paper, and a pair of arms support the roll paper due to frictional resistance between the outer surface of the chuck and the inner surface of the core tube. There are multiple types of core tubes because the inner diameter differs depending on the application and manufacturing company. In addition, the core tube is often made of paper. Furthermore, if the specifications of the corrugated cardboard sheet to be manufactured change, the roll paper used accordingly also needs to be replaced. At this time, when one roll paper is used repeatedly, the core tube is easily damaged by the chuck. Therefore, some paper core tubes are reinforced by attaching a base to the inside. In the core tube to which the base tube is attached, a pair of arms support the roll paper by letting the chuck bite into the base tube of the core tube. For roll paper with a base attached to the core tube, a chuck having a polygonal weight shape is often used. The polygonal weight-shaped chuck can support the roll paper regardless of the inner diameter of the core tube. On the other hand, the roll paper to which the base is not attached is not suitable for use because the paper tube may be excessively spread and damaged by the polygonal weight-shaped chuck. The roll paper, which does not have a base attached to the core tube, has a structure in which a pressing plate built in the chuck presses the inner peripheral surface of the core tube to obtain a fastening force. In this case, since the size of the core tube is limited by the pressing amount of the pressing plate, it is necessary to replace the chuck every time the size of the core tube changes. As described above, conventionally, a plurality of types of chucks are prepared according to the size and type of the core tube.

Examples of chucks that do not need to be replaced each time the size or type of the core tube changes include those described in Cited Document 1 below. The chuck described in Reference 1 has a claw guide member having a tapered portion and provided with three or more grooves, and a plurality of claws slidably provided in the grooves and having a non-slip surface and a protruding portion. It is provided with a member.

Jitsukaisho 53-41403

In the conventional chuck described above, a plurality of claw members move along each groove of the claw guide member, and the non-slip surface comes into contact with the inner peripheral surface of the core tube of the roll paper. At this time, the roll paper is supported by the frictional resistance between the non-slip surface of the claw member and the inner surface of the core tube. However, when the roll paper having the base attached to the core tube is supported by such a chuck, slip occurs between the non-slip surface of the claw member and the inner surface of the base, and the core tube is properly adjusted by the chuck. There is a problem that it cannot be supported by.

The present disclosure solves the above-mentioned problems, and aims to improve workability in the work of supporting the roll paper by properly holding the roll paper regardless of the type of the core tube. It is an object of the present invention to provide an apparatus and a corrugated cardboard sheet manufacturing apparatus.

The chuck for roll paper of the present disclosure for achieving the above object is a chuck that is inserted into and supported by a core tube of roll paper, and has a conical shape and is provided with a plurality of guide portions along the axial direction on the outer peripheral surface. The chuck main body, a plurality of support members having a receiving surface portion that is movably supported by the chuck main body by the plurality of guide portions and that the end portion of the core tube can contact, and the core provided on the support member. A support surface portion that can make surface contact with the inner peripheral surface of the tube, and a locking portion that is provided on the support member so as to project outward in the radial direction from the support surface portion and can contact the inner peripheral surface of the core tube. , Equipped with.

Further, the roll paper support device of the present disclosure includes a pair of frames, a support shaft in which each end in the axial direction is supported by the pair of frames, and a pair of supports in which the base end is supported by the support shaft. The arm, a drive device for bringing the pair of support arms closer to each other, and a chuck for roll paper attached to the tip ends of the pair of support arms are provided.

Further, the corrugated cardboard sheet manufacturing apparatus of the present disclosure includes a single facer that manufactures a single-sided corrugated cardboard sheet by attaching a second liner to a corrugated core, and a first liner on the core side of the single-sided corrugated board sheet. It includes a double facer for producing a corrugated cardboard sheet by bonding, and a roll paper support device for supporting the roll paper of the first liner, the roll paper of the second liner, and the roll paper of the core paper serving as the core.

According to the roll paper chuck, the roll paper support device, and the corrugated cardboard sheet manufacturing device of the present disclosure, the workability in the roll paper support work is improved by properly holding the roll paper regardless of the type of the core tube. be able to.

FIG. 1 is a schematic view showing a corrugated machine as a corrugated cardboard sheet manufacturing apparatus. FIG. 2 is a front schematic view showing a mill roll stand as a roll paper support device. FIG. 3 is a sectional view taken along line III-III of FIG. FIG. 4 is a side view showing the chuck of the present embodiment. FIG. 5 is a front view showing the chuck. FIG. 6 is a sectional view taken along line VI-VI of FIG. FIG. 7 is a sectional view taken along line VII-VII of FIG. FIG. 8 is a perspective view showing the chuck. FIG. 9 is a schematic view showing a state in which the chuck is inserted into the roll paper. FIG. 10 is a schematic view showing a state in which the chuck has been inserted into the roll paper. FIG. 11 is a schematic view showing a completed state in which the chuck is inserted into the roll paper with a base. FIG. 12 is a schematic view for explaining the pressing force of the chuck with respect to the core tube. FIG. 13 is a flowchart for explaining the operation of the roll paper support device. FIG. 14 is a graph showing the chuck pressing force with respect to the chuck moving time. FIG. 15 is a perspective view showing a support member of the chuck of the first modification. FIG. 16 is a perspective view showing a support member of the chuck of the second modification.

Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. It should be noted that the present disclosure is not limited by this embodiment, and when there are a plurality of embodiments, the present embodiment also includes a combination of the respective embodiments. Further, the components in the embodiment include those that can be easily assumed by those skilled in the art, those that are substantially the same, that is, those in a so-called equal range.

[Corrugated machine]
FIG. 1 is a schematic view showing a corrugated machine as a corrugated cardboard sheet manufacturing apparatus. In the following description, the front-rear direction in the transport direction of the cardboard sheet is the X direction, the horizontal direction orthogonal to the front-rear direction (X direction) in the transport direction of the cardboard sheet is the Y direction (width direction of the cardboard sheet), and the cardboard sheet. The vertical direction (thickness direction of the corrugated sheet) orthogonal to the front-rear direction (X direction) in the transport direction will be described as the Z direction.

As shown in FIG. 1, the corrugated machine 10 as a corrugated cardboard sheet manufacturing apparatus manufactures a single-sided corrugated cardboard sheet D by bonding a back liner C to a corrugated core B and a single-sided corrugated board sheet D. A front liner A is attached to the core B side to form a double-sided corrugated cardboard sheet E, and a continuous double-sided corrugated cardboard sheet E is cut to a predetermined length to manufacture a sheet-shaped double-sided corrugated cardboard sheet F.

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

The mill roll stand 11 is provided with roll paper on which the core B is wound in a roll shape on both sides in the X direction, and splicers 11a for splicing the paper above the roll paper in the Z direction. When one roll paper is low, the splicer 11a joins the paper to the other roll paper, so that the core B can be continuously fed from the mill roll stand 11 toward the downstream side.

The mill roll stand 13 is provided with roll paper on which the back liner C is wound in a roll shape on both sides in the X direction, and splicers 13a for joining the paper are 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 joins the paper to the other roll paper, so that the back liner C is continuously drawn out from the mill roll stand 13 toward the downstream side. be able to.

The preheaters 12 and 14 preheat the core B and the back liner C, respectively. The preheaters 12 and 14 have preheating rolls 31 and 32 to which steam is supplied to the inside, and the core B and the back liner C continuously fed out from the mill roll stands 11 and 13 are heated by the preheating rolls 31 and 32. By transporting while transporting, the core B and the back liner C are heated to a predetermined temperature.

In the single facer 15, the core B heated by the preheater 12 is processed into a wavy shape and then glued to the top of each step, and the back liner C heated by the preheater 14 is bonded to form a single-sided corrugated cardboard sheet D. The single facer 15 is provided with a pick-up conveyor 15a diagonally upward on the downstream side in the transport direction. The pick-up conveyor 15a is composed of a pair of endless belts, sandwiches the single-sided corrugated cardboard sheet D formed by the single facer 15, and conveys it to the bridge 16. The bridge 16 temporarily retains the single-sided corrugated cardboard sheet D in order to absorb the speed difference between the single facer 15 and the double facer 20.

The mill roll stand 17 is provided with roll paper on which the front liner A is wound in a roll shape on both sides in the X direction, and splicers 17a for splicing the paper are provided above the roll paper. When one roll paper is running low, or when the order is switched, the splicer 17a joins the paper to the other roll paper, so that the front liner A is continuously drawn out from the mill roll stand 17 toward the downstream side. be able to.

The preheater 18 preheats the single-sided corrugated cardboard sheet D and the front liner A, respectively. The preheater 18 has preheating rolls 33 and 34 to which steam is supplied to the inside, and conveys the front liner A continuously fed from the single-sided corrugated cardboard sheet D and the mill roll stand 17 while being heated by the preheating rolls 33 and 34. By doing so, the temperature of the single-sided corrugated cardboard sheet D and the front liner A is raised to a predetermined temperature.

The glue machine 19 has a gluing device. The single-sided corrugated cardboard sheet D heated by the preheating roll 33 is guided into the glue machine 19 on the way, and is glued to each top of the step of the core B as it passes between the rider roll and the glued roll. .. The single-sided corrugated cardboard sheet D glued by the glue machine 19 is transferred to the double facer 20. Further, the front liner A heated by the preheating roll 34 is also transferred to the double facer 20 through the glue machine 19.

The double facer 20 is divided into a heating section 20A on the upstream side and a cooling section 20B on the downstream side along the traveling line of the single-sided corrugated cardboard sheet D and the front liner A. The single-sided corrugated board sheet D glued by the glue machine 19 is carried in between the pressure belt 20a and the hot plate 20b in the heating section 20A, and the front liner A is moved to the core B side of the single-sided corrugated board sheet D. It is carried between the pressure belt 20a and the hot plate 20b so as to overlap each other. The single-sided corrugated cardboard sheet D and the front liner A are carried in between the pressure belt 20a and the hot plate 20b, and then are integrally transferred to the cooling section 20B in a state of being overlapped vertically. During this transfer, the single-sided corrugated cardboard sheet D and the front liner A are heated while being pressurized so that they are bonded to each other to form a continuous double-sided corrugated cardboard sheet E. The double-sided corrugated cardboard sheet E is naturally cooled when it is transported while being sandwiched between the pressure belt 20a and the transport belt 20c in the cooling section 20B, and is transferred to the rotary shear 21.

The rotary shear 21 cuts or partially cuts the double-sided corrugated cardboard sheet E in the width direction (Y direction) until the bonding becomes stable at the initial stage of operation. The slitter scorer 22 cuts a wide double-sided corrugated cardboard sheet E along the transport direction (X direction) so as to have a predetermined width, and processes a ruled line extending in the transport direction. The slitter scorer 22 is composed of a first slitter scorer unit 22a and a second slitter scorer unit 22b having substantially the same structure arranged along the transport direction of the double-sided corrugated cardboard sheet E. The first slitter scorer unit 22a and the second slitter scorer unit 22b have a plurality of pairs of upper ruled line rolls and lower ruled line rolls arranged opposite to each other with the double-sided corrugated cardboard sheet E in between in the width direction, and the double-sided corrugated cardboard sheet E. It has a plurality of sets of slitter knives arranged on the lower side in the width direction.

The cutoff 23 cuts the double-sided corrugated cardboard sheet E cut in the transport direction by the slitter scorer 22 along the width direction (Y direction) to form a plate-shaped double-sided corrugated cardboard sheet F having a predetermined length. The defective product discharging device 24 discharges the double-sided corrugated cardboard sheet F determined to be a defective product by the defective product detecting device from the transport line. The stacker 25 stacks non-defective double-sided corrugated cardboard sheets F and discharges them to the outside of the machine as a product.

[Mill roll stand configuration]
Hereinafter, the mill roll stands 11, 13 and 17 will be described. The mill roll stands 11, 13 and 17 have almost the same configuration, the mill roll stand 11 will be described, and the description of the mill roll stands 13 and 17 will be omitted. FIG. 2 is a schematic front view showing a mill roll stand as a roll paper support device, and FIG. 3 is a sectional view taken along line III-III of FIG.

The mill roll stand 11 has a first roll support portion 40A and a second roll support portion 40B. The first roll support portion 40A and the second roll support portion 40B can rotatably support the roll paper R. Since the first roll support portion 40A and the second roll support portion 40B have the same configuration, the first roll support portion 40A will be described.

The first roll support portion 40A of the mill roll stand 11 includes a pair of frames 41 and 42, a rotation shaft (support shaft) 43, a rotation shaft drive device 44, a pair of support arms 45 and 46, and a screw shaft (arm). A moving device) 47 and a screw shaft driving device (arm moving device) 48 are provided.

The pair of frames 41 and 42 are installed on the floor surface G at predetermined intervals along the vertical direction. The rotating shaft 43 is arranged along the horizontal direction between the pair of frames 41 and 42, and each end in the axial direction is rotatably supported by the pair of frames 41 and 42. The rotary shaft drive device 44 is arranged outside the frame 42, and the rotary shaft 43 can be rotated. The pair of support arms 45, 46 are arranged at predetermined intervals between the pair of frames 41, 42. In the pair of support arms 45, 46, the first support portions 45a, 46a on the proximal end side are supported by the rotating shaft 43. A key 51 is fixed to the outer peripheral surface of the rotating shaft 43 along the axial direction. The pair of support arms 45, 46 are formed with support holes 52, 53 and key grooves 54, 55 in the first support portions 45a, 46a. In the pair of support arms 45 and 46, the rotation shaft 43 is inserted into the support holes 52 and 53, and the key 51 is fitted into the key grooves 54 and 55. The pair of support arms 45, 46 can rotate integrally with the rotation shaft 43 in the circumferential direction, and can move relative to the rotation shaft 43.

The screw shaft 47 is arranged along the horizontal direction between the pair of frames 41 and 42. The screw shaft 47 is arranged parallel to the rotating shaft 43. In the rotating shaft 43, the support member 56 is fixed between the frame 41 and the support arm 45, and the support member 57 is fixed between the frame 42 and the support arm 46. Each end of the screw shaft 47 in the axial direction is rotatably supported by the support members 56 and 57. Further, the screw shaft 47 is provided with screw portions 58 and 59 on each end side in the axial direction. Screws are formed in the threaded portions 58 and 59 along the opposite directions. In the screw shaft 47, the screw portion 58 is screwed into the first support portion 45a of the support arm 45, and the screw portion 59 is screwed into the first support portion 46a of the support arm 46. The screw shaft driving device 48 is arranged on the outer peripheral surface between the support member 57 and the frame 42 on the rotating shaft 43, and the screw shaft 47 can rotate.

Therefore, when the rotary shaft drive device 44 is driven, the rotary shaft 43 can be rotated. When the rotating shaft 43 rotates, the support arms 45 and 46 can be rotated via the key 51 and the key grooves 54 and 55. Also. When the screw shaft drive device 48 is driven, the screw shaft 47 can be rotated. When the screw shaft 47 rotates, the support arms 45 and 46 can be moved synchronously in the axial direction via the screw portions 58 and 59. At this time, since the screw portions 58 and 59 are reverse screws, when the screw shaft 47 rotates in one direction, the support arms 45 and 46 approach each other via the screw portions 58 and 59. Further, when the screw shaft 47 rotates in the other direction, the support arms 45 and 46 are separated from each other via the screw portions 58 and 59.

Chuck (roll paper chuck) 61, 62 is mounted on the second support portions 45b, 46b on the other end side of the pair of support arms 45, 46. The chucks 61 and 62 are mounted on the facing surfaces of the second support portions 45b and 46b. The chucks 61 and 62 are removable from the second support portions 45b and 46b.

Further, the detection sensor 63 is attached to the screw portion 58. The detection sensor 63 detects the position of the support arm 45 with respect to the frame 41. The detection sensor 63 detects the amount of rotation of the screw shaft 47. The detection sensor 63 detects the position of the second support portion 45b on the support arm 45 based on the amount of rotation of the screw shaft 47. An operation control panel (control device) 64 is mounted on the upper part of the frame 42. The operation control panel 64 can drive and control the rotary shaft drive device 44 and the screw shaft drive device 48 by being operated by an operator. Further, the operation control panel 64 can drive and control the screw shaft drive device 48 based on the detection result of the detection sensor 63. The detection sensor 63 is not limited to the above-described configuration, and may be, for example, a distance sensor that detects the position of the second support portion 45b on the support arm 45 with respect to the frame 41.

[Structure of chuck for roll paper]
Here, chucks 61 and 62 will be described. The chucks 61 and 62 have substantially the same configuration, and the chuck 61 will be described in detail. 4 is a side view showing the chuck of the present embodiment, FIG. 5 is a front view of the chuck, FIG. 6 is a sectional view taken along line VI-VI of FIG. 4, and FIG. 7 is a sectional view taken along line VII-VII of FIG. 8 is a perspective view showing a chuck.

As shown in FIG. 3, the roll paper R is a roll paper R in which a continuous paper R2 having a predetermined length is wound around an outer peripheral portion of a paper (or resin) core tube R1. The chuck 61 supports the roll paper R via the core tube R1 by inserting it into the core tube R1 of the roll paper R. The support arm 45 is provided with a rotatable support shaft (not shown) on the second support portion 45b, and the chuck 61 is detachably provided on the support shaft.

As shown in FIGS. 4 to 8, the chuck 61 includes a chuck main body 71 and a plurality of support members 72. The support member 72 has a support surface portion 73 and a locking portion 74. In the following description, the center of the chuck 61 is the center line O. The insertion direction of the chuck 61 into the roll paper R is the axial direction of the chuck 61 and the direction parallel to the center line O. The radial direction of the chuck 61 is a direction orthogonal to the center line O, and the circumferential direction of the chuck 61 is a rotation direction centered on the center line O. Further, the front in the insertion direction of the chuck 61 into the roll paper R (right in FIG. 4) is the O1 direction, and the rear in the insertion direction of the chuck 61 into the roll paper R (left in FIG. 4) is the O1 direction. , O2 direction.

The chuck body 71 has a conical shape as a whole. The chuck body 71 has a mounting portion 81, a support portion 82, and a stopper portion 83. The mounting portion 81 is mounted on the second support portion 45b of the support arm 45 (both refer to FIG. 3). The mounting portion 81 has a disk shape. The support portion 82 has a conical shape along the axial direction (center line O direction). The support portion 82 has a large outer diameter at the base end portion, and the outer diameter of the tip end portion is smaller than the outer diameter of the base end portion. Here, the support portion 82 has a base end portion at the rear end portion (left side in FIG. 4) in the insertion direction of the chuck 61 into the roll paper R, and a tip end portion at the chuck 61 into the roll paper R. It is an end portion of the front portion (right side in FIG. 4) in the insertion direction of. The base end portion of the support portion 82 is integrally connected to the mounting portion 81. In this case, the mounting portion 81 and the supporting portion 82 are integrally molded, but they may be separately molded and connected by adhesion or fastening.

The support portion 82 is provided with guide grooves 84 as a plurality of guide portions. The guide portion is not limited to the guide groove 84, and may be a guide hole or the like. The plurality of guide grooves 84 have the same shape. In the present embodiment, four guide grooves 84 are provided, but a plurality of guide grooves 84 may be provided, for example, two or five or more. The plurality of guide grooves 84 are provided on the outer peripheral surface of the support portion 82 along the axial direction. However, since the support portion 82 has a conical shape, the plurality of guide grooves 84 are arranged so as to be inclined so as to approach the center line O from the base end portion side to the tip end portion side. The plurality of guide grooves 84 are provided on the outer peripheral surface of the support portion 82 at predetermined intervals (equal intervals in the present embodiment) in the circumferential direction. The plurality of guide grooves 84 have a U-shaped cross section along the radial direction. In the plurality of guide grooves 84, the base end side of the support portion 82 is closed and the tip end side is opened. Further, in the support portion 82, a connecting hole 85 having a predetermined length is formed at the center position of the tip portion, and a female screw portion 86 is formed on the inner peripheral surface of the connecting hole 85.

The stopper portion 83 has a conical shape along the axial direction. The stopper portion 83 has a large outer diameter at the base end portion, and the outer diameter of the tip end portion is smaller than the outer diameter of the base end portion. Further, the core tube R1 has an inner diameter of 3 inches (75 mm) and a core tube R1 having an inner diameter of 4 inches (100 mm), and the maximum outer diameter of the stopper portion 83 is a dimension equal to or less than the minimum inner diameter (φ75 mm) of the core tube R1. is there. The stopper portion 83 is integrally connected to the tip end portion of the support portion 82. It is desirable that the outer diameter of the most advanced portion of the support surface portion 73 is equal to or less than the outer diameter of the rear end portion of the stopper portion 83. The stopper portion 83 is provided with a connecting rod 87 at the center position of the base end portion, and a male screw portion 88 is formed on the outer peripheral surface of the connecting rod 87. In the stopper portion 83, the support portion 82 and the stopper portion 83 are integrally connected by inserting the connecting rod 87 into the connecting hole 85 of the support portion 82 and screwing the male screw portion 88 into the female screw portion 86. Although the support portion 82 and the stopper portion 83 are formed as separate bodies and connected to each other, they may be integrally molded.

A plurality of support members 72 (4 in this embodiment) are provided. The plurality of support members 72 have the same shape. The plurality of support members 72 are movably supported by guide grooves 84 provided in the support portion 82 of the chuck body 71. In the present embodiment, four support members 72 are provided, but a plurality of support members 72 may be provided, for example, two or five or more. That is, the number of support members 72 is the same as that of the guide grooves 84.

The support member 72 has a support main body portion 91 and a flange portion 92. The support main body 91 has an arc shape, and the flange 92 has a fan shape. The support main body 91 and the flange 92 are integrally connected in the orthogonal direction. The thickness of the tip portion of the support main body portion 91 is thicker than the thickness of the base end portion. A flange portion 92 is connected to the base end portion of the support main body portion 91. The support main body portion 91 and the flange portion 92 are integrally molded, but they may be separately molded and connected by adhesion or fastening. The support member 72 is provided with a guide protrusion 93 on the inner surface of the support main body 91. The guide protrusion 93 is provided along the longitudinal direction of the support main body 91. The guide protrusion 93 is movably fitted in the guide groove 84 provided in the support portion 82 of the chuck body 71. The support member 72 is assembled by inserting the guide protrusion 93 from the open end of the guide groove 84 in the support portion 82. After that, the stopper portion 83 is fixed to the support portion 82, so that the end portion of the guide groove 84 is closed. The support member 72 is movable between the mounting portion 81 and the stopper portion 83 by the guide groove 84 of the support portion 82. The support member 72 is prevented from moving by coming into contact with the stopper portion 83, and is prevented from falling off from the chuck body 71.

The support member 72 has a receiving surface portion 94 to which the end portion of the core tube R1 of the roll paper R can come into contact. The receiving surface portion 94 is provided on the flange portion 92. The receiving surface portion 94 is a surface along a direction orthogonal to the center line O. The support member 72 has a support surface portion 73 and a locking portion 74. The support member 72 is provided with a mounting recess 95 on the outer surface of the support main body 91. The mounting recess 95 is provided along the longitudinal direction (axial direction) of the support main body 91. The mounting recess 95 is parallel to the guide projection 93. The locking member 96 is mounted on the mounting recess 95. The locking member 96 is fixed to the support main body 91 by a plurality of (two in this embodiment) bolts 97 inserted from the inner peripheral surface side of the support main body 91 in a state of being fitted in the mounting recess 95. To.

The locking member 96 has a rectangular cross-sectional shape, and the locking portion 74 is provided on a surface exposed from the support main body portion 91. Further, the support main body 91 is provided with a support surface 73 on the outer peripheral surface around the locking portion 74. The outer peripheral surface of the locking member 96 other than the locking portion 74 is an arc surface continuous with the outer peripheral surface of the support main body 91 without a step, and the outer peripheral surface of the locking member 96 and the support main body 91 is the support surface 73. .. The support surface portion 73 can come into surface contact with the inner peripheral surface of the core tube R1. The locking portion 74 is provided so as to project outward in the radial direction from the support surface portion 73, and can come into contact with the inner peripheral surface of the core tube R1. The locking portion 74 has a tapered shape toward the outside in the radial direction. In the present embodiment, the support main body 91 and the locking member 96 are separated from each other so that the locking member 96 having the locking portion 74 can be attached to and detached from the support main body 91 of the support member 72. However, the locking portion 74 may be integrally molded with the support member 72.

When a plurality of support members 72 are assembled to the chuck main body 71, each locking portion 74 is provided along the center line O. The support surface portion 73 is provided along the center line O and is provided along the circumferential direction centered on the center line O. The locking portion 74 is provided at an intermediate position in the circumferential direction on the support surface portion 73. The receiving surface portion 94 and the supporting surface portion 73 are arranged orthogonally to each other. The locking portion 74 is provided from the receiving surface portion 94 to an intermediate position in the direction of the center line O on the support surface portion 73. The height of the locking portion 74 becomes lower toward the stopper portion 83 (the length of the chuck body 71 in the radial direction becomes shorter). That is, the locking portion 74 has a triangular cross-sectional shape, and the base end portion is continuous with the orthogonal portion between the receiving surface portion 94 and the supporting surface portion 73. The locking portion 74 maintains a triangular cross-sectional shape toward the stopper portion 83, but the width dimension in the circumferential direction and the height dimension in the radial direction become smaller.

The plurality of support members 72 are movably supported along the center line O on the outer peripheral surface of the chuck body 71. At this time, the support member 72 moves in the direction approaching the center line O when moving in the O1 direction, and moves in the direction away from the center line O when moving in the O2 direction. That is, when the chuck 61 moves in the O1 direction, which is the insertion direction into the core tube R1, the support member 72 moves in the O2 direction by pressing the end portion of the core tube R1 in contact with the receiving surface portion 94. While moving outward in the radial direction of the chuck 61. Further, in the chucks 61 and 62, the support surface portion 73 is arranged in parallel with the inner peripheral surface of the core tube R1 of the roll paper R to be supported, and the locking portion 74 is arranged in an inclined manner.

[How to support roll paper with a mill roll stand]
Hereinafter, a method of supporting the roll paper by the mill roll stand 11 will be described. FIG. 9 is a schematic view showing a state in which the chuck is inserted into the roll paper, FIG. 10 is a schematic view showing the state in which the chuck is inserted into the roll paper, and FIG. 11 is a diagram showing the completion of inserting the chuck into the roll paper with a base. It is the schematic which shows the state.

As shown in FIG. 3, the roll paper R is a roll paper R in which a continuous paper R2 having a predetermined length is wound around an outer peripheral portion of a paper core tube R1. The roll paper R is mounted on a transport table (not shown) and is arranged between the pair of support arms 45 and 46. In this state, the screw shaft drive device 48 is driven to rotate the screw shaft 47, and the support arms 45 and 46 are moved closer to each other. Then, the chucks 61 and 62 mounted on the second support portions 45b and 46b of the pair of support arms 45 and 46 are inserted into the core tube R1 of the roll paper R to support the roll paper R. Hereinafter, the actions of the chucks 61 and 62 will be described, but since the chucks 61 and 62 have the same actions, one chuck 61 will be described in detail.

As shown in FIG. 9, the chuck 61 is arranged at a position where each support member 72 is in contact with the stopper portion 83 on the tip end side with respect to the chuck main body 71. In this state, the chuck 61 moves with respect to the roll paper R in the O1 direction, which is the front in the insertion direction into the core tube R1. Then, in the chuck 61, first, the stopper portion 83 at the tip portion is inserted into the core tube R1. At this time, a gap is secured between the outer peripheral surface of each support member 72 and the inner peripheral surface of the core tube R1. Next, in the chuck 61, the receiving surface portion 94 of each support member 72 comes into contact with the end surface of the core tube R1. When the chuck 61 continues to move in the O1 direction, each support member 72 moves in the O2 direction, which is behind the insertion direction into the core tube R1, when the receiving surface portion 94 receives the pressing force from the core tube R1. At this time, each support member 72 moves outward in the radial direction of the chuck 61 while moving in the O2 direction.

Then, each support member 72 moves outward in the radial direction while moving in the O2 direction, so that the gap between the outer peripheral surface of each support member 72 and the inner peripheral surface of the core tube R1 is reduced. Then, as shown in FIG. 10, each of the support members 72 makes point contact with each locking portion 74 with the inner peripheral surface of the core tube R1. Since the core tube R1 is made of paper, each locking portion 74 bites into the inner peripheral surface of the soft core tube R1. Then, there is no gap between the outer peripheral surface of each support member 72 and the inner peripheral surface of the core tube R1, and each support surface portion 73 comes into surface contact with the inner peripheral surface of the core tube R1. Here, the movement of the chuck 61 in the O1 direction is stopped. As shown in FIGS. 3 and 10, each of the chucks 61 and 62 makes surface contact with the inner peripheral surface of the core tube R1 in which each support surface portion 73 of each support member 72 is made of paper. Therefore, each of the chucks 61 and 62 can integrally rotate the roll paper R by the frictional resistance between each support surface portion 73 and the inner peripheral surface of the core tube R1. At this time, since each locking portion 74 bites into the inner peripheral surface of the core tube R1, the size of the locking portion 74 is such that the core tube R1 is not damaged.

On the other hand, as shown in FIG. 11, in the roll paper R, the base R3 is attached to the axial end portion of the paper core tube R1, and the continuous paper R2 having a predetermined length is wound around the outer peripheral portion of the core tube R1. There is something. The case of such a roll paper R will be described. When the chuck 61 moves in the O1 direction with respect to the roll paper R, first, the stopper portion 83 at the tip portion is inserted into the core tube R1. At this time, a gap is secured between the outer peripheral surface of each support member 72 and the inner peripheral surface of the core tube R1 (base R3). Next, in the chuck 61, the receiving surface portion 94 of each support member 72 comes into contact with the base R3 on the end surface of the core tube R1. When the chuck 61 continues to move in the O1 direction, each support member 72 moves in the O2 direction, which is behind the insertion direction into the core tube R1, when the receiving surface portion 94 receives the pressing force from the core tube R1. At this time, each support member 72 moves outward in the radial direction of the chuck 61 while moving in the O2 direction.

Then, each support member 72 moves outward in the radial direction while moving in the O2 direction, so that the gap between the outer peripheral surface of each support member 72 and the inner peripheral surface of the base R3 is reduced. Then, each of the support members 72 makes point contact with the inner peripheral surface of the base R3 mounted on the core tube R1 by each of the locking portions 74. Since the base R3 is made of metal, each locking portion 74 slightly bites into the hard base R3 and is in a line contact state. Here, in each support member 72, each support surface portion 73 does not come into surface contact with the inner peripheral surface of the core tube R1, and a gap remains between the two. By completely biting into the core tube R1, there is no gap between the outer peripheral surface of each support member 72 and the inner peripheral surface of the core tube R1, and each support surface portion 73 comes into surface contact with the inner peripheral surface of the core tube R1. Here, the movement of the chuck 61 in the O1 direction is stopped. As shown in FIGS. 3 and 11, in each of the chucks 61 and 62, each locking portion 74 of each support member 72 comes into surface contact with the inner peripheral surface of the base R3 made of metal. Therefore, each of the chucks 61 and 62 can integrally rotate the roll paper R by biting into each of the locking portions 74 and the base R3 of the core tube R1. Further, the fastening between the base R3 and the support member 72 can prevent not only the coefficient of friction but also slippage.

[Roll paper support control method using a mill roll stand]
Hereinafter, a control method when the mill roll stand 11 supports the roll paper R will be described. FIG. 12 is a schematic view for explaining the pressing force of the chuck against the core tube, FIG. 13 is a flowchart for explaining the operation of the roll paper support device, and FIG. 14 is a graph showing the pressing force of the chuck with respect to the chuck moving time. Is.

As shown in FIG. 3, the roll paper R has a continuous paper R2 wrapped around the outer peripheral portion of the paper core tube R1 and a base R3 (see FIG. 11) at the end of the paper core tube R1. Some are installed. The chucks 61 and 62 of the present embodiment can be used for both roll papers R, and can be used for roll papers R having different inner diameters of the core tube R1. That is, the chucks 61 and 62 are provided with a support surface portion 73 and a locking portion 74 on the support member 72. In the chucks 61 and 62, the support surface portion 73 comes into surface contact with the inner peripheral surface of the paper core tube R1 to support the roll paper R. Further, the chucks 61 and 62 support the roll paper R by contacting the locking portions 74 so as to bite into the metal base R3. In this case, since the paper core tube R1 has a low hardness and the metal base R3 has a high hardness, the pressing force of the chucks 61 and 62 against the core tube R1 is important.

In the following description, the pressing force is a force that moves the chucks 61 and 62 of the support arms 45 and 46 toward the core tube R1 side of the roll paper R by the screw shaft driving device 48. For example, it is the supply pressure to the hydraulic motor constituting the screw shaft drive device 48 or the torque of the electric motor, and when the hydraulic cylinder is used for moving the support arms 45 and 46, it is the supply pressure of the hydraulic cylinder.

The pressing force will be specifically described. As shown in FIG. 12, when the chuck 61 moves to the roll paper R side (right side in FIG. 12) and the support member 72 of the chuck 61 abuts on the inner surface of the core tube R1 with the pressing force F, the chuck 61 moves. , Receives reaction force F1 from core tube R1. At this time, since the outer surface of the support member 72 of the chuck 61 is an inclined surface, the pressing force F is distributed to a force f parallel to the center line O and a force r orthogonal to the center line O. Then, the force r is the pressing force Fr acting on the inner surface of the core tube R1, and at this time, the chuck 61 receives the reaction force Fr from the core tube R1. That is, the pressing force of the chuck 61 is the pressing force F, and the pressing force acting on the inner surface of the core tube R1 is the pressing force Fr. In this case, the pressing force Fr is calculated by the following mathematical formula, assuming that the coefficient of friction between the chuck 61 and the core tube R1 is 0.
Fr = F / tanθ

As shown in FIG. 3, the operation control panel 64 can drive and control the screw shaft drive device 48 by being operated by an operator, and can drive and control the screw shaft drive device 48 based on the detection result of the detection sensor 63. Is. That is, the operation control panel 64 drives the screw shaft drive device 48 and moves the support arms 45 and 46 closer to each other. The detection sensor 63 detects the position of the support arm 45 and outputs the position to the operation control panel 64. When the detection sensor 63 detects that the chucks 61 and 62 are inserted into the core tube R1 and the change in the arm position of the support arm 45 has disappeared, the operation control panel 64 stops driving the screw shaft drive device 48.

Further, when the support arms 45 and 46 are brought close to each other and the chucks 61 and 62 are inserted into the core tube R1, the operation control panel 64 changes and controls the pressing force by the support arms 45 and 46 according to the type of the core tube R1. .. That is, when the core tube R1 is made of paper and the base R3 is not attached, the operation control panel 64 brings the support arms 45 and 46 closer to each other and inserts the chucks 61 and 62 into the core tube R1. The pressing force by 45 and 46 is constantly increased or increased at a predetermined insertion position. Further, when the core tube R1 is made of paper and the base R3 is attached, the operation control panel 64 approaches the support arms 45 and 46 and inserts the chucks 61 and 62 into the core tube R1. The pressing force of 45 and 46 is increased at a predetermined insertion position.

As shown in FIGS. 3, 12 and 13, in step S11 (time t0), the operation control panel 64 starts to move the support arms 45 and 46 by the screw shaft drive device 48. In step S12, the detection sensor 63 detects the arm position of the support arm 45. In step S13, the operation control panel 64 determines whether or not the support arm 45 has stopped for the first time (first stop position) based on the detection result of the detection sensor 63. As shown in FIG. 9, the first stop position is such that each support member 72 of the chuck 61 moves outward in the radial direction while moving in the O2 direction, and each locking portion 74 moves to the inner peripheral surface of the core tube R1. The position where each locking portion 74 bites into the core tube R1 and each support surface portion 73 does not surface contact with the core tube R1, or each locking portion 74 bites into the core tube R1. This is a position where each support surface portion 73 is in surface contact with the inner peripheral surface of the core tube R1. Here, if it is determined (No) that the support arm 45 is not stopped, the process returns to step S13. On the other hand, if it is determined (Yes) that the support arm 45 is stopped, in step S14, the operation control panel 64 determines whether or not the base R3 is attached to the chucks 61 and 62. Information on whether or not the base R3 is attached to the chucks 61 and 62 is input to the operation control panel 64 in advance.

Here, if it is determined (No) that the base R3 is not attached to the chucks 61 and 62, the pressing force P1 of the support arms 45 and 46 is equal to or higher than the strength of the core tube R1 (internal pressure) in step S15. Determine if. Here, the strength of the core tube R1 is a strength in which safety (safety factor) is taken into consideration. The relationship between the pressing force P1 of the support arms 45 and 46 and the strength of the core tube R1 (internal pressure) is input to the operation control panel 64 in advance. Here, when it is determined (Yes) that the pressing force P1 of the support arms 45 and 46 is equal to or higher than the strength of the core tube R1, the support arm 45 stops at the first stop position, and each locking portion 74 is the core tube. Since the chucks 61 and 62 hold the core tube R1 by biting into R1 and each support surface portion 73 comes into surface contact with the inner peripheral surface of the core tube R1, the operation control panel is in step S16 (time t2). 64 stops the driving of the screw shaft driving device 48. In this case, the movement of the support arms 45 and 46 may be stopped by a predetermined timer.

Further, if it is determined (No) in step S15 that the pressing force P1 of the support arms 45 and 46 is less than the strength of the core tube R1, the pressing force of the chucks 61 and 62 is determined in step S17 (time t1). Is increased to the pressing force P2 (tP2). Then, as shown in FIG. 10, each locking portion 74 bites into the inner peripheral surface of the core tube R1. In step S18, the operation control panel 64 determines whether or not the support arm 45 has stopped for the second time (second stop position) based on the detection result of the detection sensor 63. As shown in FIG. 10, the second stop position is a position where each support surface portion 73 comes into surface contact with the inner peripheral surface of the core tube R1. Here, if it is determined (No) that the support arm 45 is not stopped, the process returns to step S17. On the other hand, when it is determined (Yes) that the support arm 45 is stopped, the support arm 45 is stopped at the second stop position, each locking portion 74 bites into the core tube R1, and each support surface portion 73 is a core tube. Since the chucks 61 and 62 hold the core tube R1 by making surface contact with the inner peripheral surface of R1, the operation control panel 64 drives the screw shaft drive device 48 in step S16 (time t2). Stop. In this case, the movement of the support arms 45 and 46 may be stopped by a predetermined timer.

In the case of the core tube R1 to which the base tube R3 is not attached, the strength of the core tube R1 has a sufficient margin with respect to the pressing force (Fr) applied to the inner surface of the core tube R1 by the pressing force (F) of the arm movement. If there is, the pressing force is increased in order to further increase the fastening force. When each of the locking portions 74 of the chucks 61 and 62 bites into the inner peripheral surface of the paper core tube R1, the pressing force (F) of the support arms 45 and 46, that is, each support member 72 of the core tube R1 The pressing force (Fr) that presses the inner peripheral surface is increased. Therefore, the support member 72 properly presses the inner peripheral surface of the core tube R1, and the core tube R1 can be properly held by the locking portion 74. Further, when the detection sensor 63 detects that the change in the arm position of the support arm 45 has disappeared (second stop position), the operation control panel 64 stops driving the screw shaft drive device 48, so that the core tube R1 is used. The core tube R1 can be properly held without being damaged.

On the other hand, if it is determined (Yes) that the cap R3 is attached to the chucks 61 and 62 in step S14, the pressing force of the chucks 61 and 62 is increased to the pressing force P3 in step S19 (time t1). (TP3). Then, as shown in FIG. 11, each locking portion 74 bites into the inner peripheral surface of the base R3. Then, each locking portion 74 bites into the inner peripheral surface of the base R3 by a predetermined amount, and in step S20, the operation control panel 64 stops the support arm 45 for the second time based on the detection result of the detection sensor 63. It is determined whether or not the (second stop position) has been reached. Here, if it is determined (No) that the support arm 45 is not stopped, the process returns to step S19. On the other hand, when it is determined (Yes) that the support arm 45 is stopped, the support arm 45 is stopped at the second stop position, and each locking portion 74 bites into the core tube R1, so that the chucks 61 and 62 are cored. Since the pipe R1 is held, the operation control panel 64 stops driving the screw shaft drive device 48 in step S16 (time t2). In this case, the movement of the support arms 45 and 46 may be stopped by a predetermined timer.

In the case of the core tube R1 to which the base R3 is attached in this way, there is a possibility that the locking portion 74 does not bite into the base R3 sufficiently at the position where the first stop is made, and the core tube R3 is fastened with more bite. The pressing force is increased to increase the force. When each of the locking portions 74 of the chucks 61 and 62 bites into the inner peripheral surface of the base R3, the pressing force (F) of the support arms 45 and 46, that is, each support member 72 presses on the inner peripheral surface of the core tube R1. The pressing pressure (Fr) to be pressed is increased. Therefore, the support member 72 strongly presses the inner peripheral surface of the base R3, and the locking portion 74 of the support member 72 comes into contact with the base R3 so as to bite into the base R3 to support the roll paper R, thereby supporting the locking portion 74. The core tube R1 can be properly held by the above. Further, when the detection sensor 63 detects that the change in the arm position of the support arm 45 has disappeared, the operation control panel 64 stops driving the screw shaft drive device 48, so that the base R3 and the core tube R1 are damaged. It is possible to properly hold the core tube R1.

Here, when the pressing force of the support arms 45 and 46 is increased at time t1, the pressing force P3 with respect to the paper core tube R1 to which the base R3 is attached is applied to the paper core tube R1 to which the base R3 is not attached. The pressing force against the core tube R1 is made larger than P2. Therefore, when each locking portion 74 presses the core tube R1, each locking portion 74 does not damage the paper core tube R1 to which the base R3 is not attached, while each locking portion 74 Can bite into the base R3 and properly hold the core tube R1.

In the above description, the first stop position is applied as the predetermined insertion position, but the position is not limited to the stop positions of the support arms 45 and 46. For example, as a predetermined insertion position, the positions of the support arms 45 and 46 corresponding to the first stop position are obtained in advance, and even if the support arms 45 and 46 do not stop, the support arms 45 and 46 are in the first stop position. When the position corresponding to is reached, the pressing force of the chucks 61 and 62 may be increased. In this case, the positions of the support arms 45 and 46 may be detected by the detection sensor 63. Further, the pressing force of the chucks 61 and 62 may be increased by detecting the time when the support arms 45 and 46 reach the position corresponding to the first stop position by using a timer.

The locking portion 74 is not limited to the shape described above. FIG. 15 is a perspective view showing the support member of the chuck of the first modification, and FIG. 16 is a perspective view showing the support member of the chuck of the second modification. Members having the same functions as those in the above-described embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In the first modification, as shown in FIG. 15, the support member 101 has a support main body portion 91 and a flange portion 92. The support member 101 is provided with a guide protrusion 93 on the inner surface of the support main body 91. The support member 101 has a receiving surface portion 94 to which the end portion of the core tube R1 of the roll paper R can come into contact. The receiving surface portion 94 is provided on the flange portion 92. The support member 101 has a support surface portion 73 and a locking portion 102. The support member 101 is provided with a mounting recess 95 on the outer surface of the support main body 91. The locking member 103 is mounted on the mounting recess 95. The locking member 103 is fixed to the support main body 91 by a bolt (not shown) in a state of being fitted in the mounting recess 95.

The locking member 103 has a rectangular cross-sectional shape, and the locking portion 102 is provided on a surface exposed from the support main body portion 91. Further, the support main body 91 is provided with a support surface 73 on the outer peripheral surface around the locking portion 102. The outer peripheral surface of the locking member 103 other than the locking portion 102 is an arc surface continuous with the outer peripheral surface of the support main body 91 without a step, and the outer peripheral surfaces of the locking member 103 and the support main body 91 serve as the support surface 73. .. The support surface portion 73 can come into surface contact with the inner peripheral surface of the core tube R1. The locking portion 102 can make line contact with the inner peripheral surface of the core tube R1.

The locking portion 102 is provided at an intermediate position in the circumferential direction on the support surface portion 73. The locking portion 102 is provided from the receiving surface portion 94 to the intermediate position in the direction of the center line O on the support surface portion 73. The locking portion 102 has the same height (the radial length of the chuck body 71) along the longitudinal direction. That is, the locking portion 102 has a triangular cross-sectional shape, and the width dimension in the circumferential direction and the height dimension in the radial direction are the same along the longitudinal direction.

In the second modification, as shown in FIG. 16, the support member 111 has a support main body portion 91 and a flange portion 92. The support member 111 is provided with a guide protrusion 93 on the inner surface of the support main body 91. The support member 111 has a receiving surface portion 94 to which the end portion of the core tube R1 of the roll paper R can come into contact. The receiving surface portion 94 is provided on the flange portion 92. The support member 111 has a support surface portion 73 and a locking portion 112. The support member 111 is provided with a mounting recess 95 on the outer surface of the support main body 91. The locking member 113 is mounted on the mounting recess 95. The locking member 113 is fixed to the support main body 91 by a bolt (not shown) in a state of being fitted in the mounting recess 95.

The locking member 113 has a rectangular cross-sectional shape, and the locking portion 112 is provided on a surface exposed from the support main body portion 91. Further, the support main body 91 is provided with a support surface 73 on the outer peripheral surface around the locking portion 112. The outer peripheral surface of the locking member 113 other than the locking portion 112 is an arc surface continuous with the outer peripheral surface of the support main body 91 without a step, and the outer peripheral surface of the locking member 113 and the support main body 91 is the support surface portion 73. .. The support surface portion 73 can come into surface contact with the inner peripheral surface of the core tube R1. The locking portion 112 can make line contact with the inner peripheral surface of the core tube R1.

The locking portion 112 is provided at an intermediate position in the circumferential direction on the support surface portion 73. The locking portion 112 is provided from the receiving surface portion 94 to an intermediate position in the direction of the center line O on the support surface portion 73. The height of the locking portion 112 is low (the length of the chuck body 71 in the radial direction is short). The locking portion 112 has a triangular cross-sectional shape on the base end side and a trapezoidal cross-sectional shape on the tip end side. That is, the locking portion 112 has a flat surface with the apex of the triangular cross-sectional shape on the base end side cut off, has a trapezoidal cross-sectional shape on the tip end side, and is finally continuous with the support surface portion 73 without a step. That is, the locking portion 112 has the same width dimension in the circumferential direction along the longitudinal direction, but the height dimension in the radial direction becomes smaller.

[Action and effect of this embodiment]
The roll paper chuck according to the first aspect is a plurality of guide grooves (guide portions) having a conical shape and along the axial direction on the outer peripheral surface of the chucks 61 and 62 which are inserted into and supported by the core tube R1 of the roll paper R. ) 84 is provided, and a plurality of support members 72 having a receiving surface portion 94 that is movably supported by the chuck main body 71 by a plurality of guide grooves 84 and has a contact surface portion 94 at the end of the core tube R1. A support surface portion 73 provided on the member 72 and capable of surface contact with the inner peripheral surface of the core tube R1 and an inner circumference of the core tube R1 provided on the support member 72 so as to project outward in the radial direction from the support surface portion 73. A locking portion 74 that can come into contact with the surface is provided.

In the roll paper chuck according to the first aspect, when the tips of the chucks 61 and 62 are inserted into the core tube R1 of the roll paper R to support the roll paper R, a plurality of support members 72 form the core tube R1. It contacts the inner peripheral surface and supports the roll paper R. At this time, when the core tube R1 is made of paper, the support surface portion 73 of the support member 72 comes into surface contact with the inner peripheral surface of the core tube R1 to support the roll paper R. Then, the locking portion 74 bites into the core tube R1, but the size of the locking portion 74 is such that the core tube R1 is not damaged, and the core tube R1 is not damaged. On the other hand, when the core tube R1 has the base R3, the locking portion 74 of the support member 72 comes into contact with the base R3 so as to bite into the base R3 to support the roll paper R. Therefore, the fastening between the base R3 and the support member 72 can prevent not only friction but also slip. That is, the chucks 61 and 62 can properly hold the core tube R1 regardless of the size and type of the core tube R1. As a result, it is possible to improve workability in the support work of the roll paper R by eliminating the need for damage to the core tube R1 due to an inappropriate chuck and replacement work for the chucks 61 and 62.

In the roll paper chuck according to the second aspect, the locking portion 74 has a tapered shape toward the outside in the radial direction. As a result, the locking portion 74 of the support member 72 properly bites into the base R3, and the roll paper R can be properly supported.

In the roll paper chuck according to the third aspect, the locking portion 74 is provided along the axis (center line O) direction of the chuck body 71. As a result, regardless of the size of the core tube R1, the locking portion 74 can bite into the base R3 and properly support the core tube R1.

In the roll paper chuck according to the fourth aspect, the support surface portion 73 is provided along the axial (center line O) direction and the circumferential direction of the chuck body 71, and the locking portion 74 is located at an intermediate position in the circumferential direction on the support surface portion 73. It is provided in. As a result, the locking portion 74 and the support surface portion 73 can stably support the core tube R1 regardless of the size of the core tube R1.

In the roll paper chuck according to the fifth aspect, the receiving surface portion 94 and the supporting surface portion 73 are arranged orthogonally, and the locking portion 74 is located in the axial direction (center line O) of the chuck main body 71 from the receiving surface portion 94 to the supporting surface portion 73. It is provided up to the middle position. As a result, the area of the support surface portion 73 can be increased, and by increasing the contact area between the support surface portion 73 and the inner peripheral surface of the core tube R1, the core tube R1 can be stably supported.

In the roll paper chuck according to the sixth aspect, the length of the chuck main body 71 in the radial direction is shortened so that the locking portion 74 is directed forward in the insertion direction into the core tube R1. As a result, the locking portion 74 is arranged at an angle with respect to the inner peripheral surface of the core tube R1. Therefore, when the core tube R1 is made of paper, the core tube R1 has a base R3 with respect to the core tube R1. In this case, the locking portion 74 easily bites into the base R3, and the core tube R1 can be stably supported.

In the roll paper chuck according to the seventh aspect, the locking portion 74 is detachably provided on the support member 72. As a result, when the locking portion 74 is damaged, the support member 72 can be used for a long period of time by replacing only the locking portion 74.

The roll paper chuck according to the eighth aspect includes a mounting portion 81 as a chuck main body 71, a support portion 82 in which one end is connected to the mounting portion 81 and a plurality of guide grooves 84 are provided, and a support portion 82. A stopper portion 83 which is connected to the end portion and prevents the support member 72 from moving forward in the insertion direction into the core tube R1 is provided. As a result, the support member 72 can be stably supported with respect to the chuck body 71 without falling off.

In the roll paper chuck according to the ninth aspect, the stopper portion 83 has a conical shape, and the maximum outer diameter of the stopper portion is a dimension equal to or less than the minimum inner diameter of the core tube R1. As a result, the core tube R1 can be properly supported regardless of the size of the core tube R1.

The roll paper support device according to the tenth aspect includes a pair of frames 41 and 42, a rotation shaft (support shaft) 43 in which each end in the axial direction is supported by the pair of frames 41 and 42, and a base end portion. A pair of support arms 45, 46 supported by a rotating shaft 43, a screw shaft drive device 48 for bringing the pair of support arms 45, 46 closer to each other, and a chuck mounted on the tip of the pair of support arms 45, 46. (Chuck for roll paper) 61, 62 are provided. As a result, the chucks 61 and 62 can properly support the core tube R1 regardless of the size and type of the core tube R1. As a result, it is possible to improve workability in the support work of the roll paper R by eliminating the need for damage to the core tube R1 due to an inappropriate chuck and replacement work for the chucks 61 and 62.

The roll paper support device according to the eleventh aspect is provided with an operation control panel (control device) 64 for driving and controlling the screw shaft drive device 48, and the operation control panel 64 brings a pair of support arms 45 and 46 close to each other. When the chucks 61 and 62 are inserted into the core tube R1, the pressing force by the pair of support arms 45 and 46 is increased at a predetermined insertion position (for example, the first stop position). As a result, when the support member 72 of the chucks 61 and 62 presses the core tube R1, the pressing force of the support member 72 pressing the inner peripheral surface of the core tube R1 is increased. Therefore, the support member 72 presses the inner peripheral surface of the core tube R1 with an appropriate pressure, and the support member 72 can properly hold the core tube R1.

In the roll paper support device according to the twelfth aspect, the pressing force by the pair of support arms 45, 46 that raises the roll paper support device at a predetermined insertion position is larger than the pressing force when the roll paper support device is inserted into the core tube R1 to which the base tube R3 is not attached. The pressing force when the base tube R3 is inserted into the core tube R1 is increased. As a result, the locking portion 74 does not damage the paper core tube R1 to which the base tube R3 is not attached, while the locking portion 74 bites into the base tube R3 to properly hold the core tube R1. be able to.

The corrugated machine (corrugated cardboard sheet manufacturing apparatus) 10 according to the thirteenth aspect is a single facer 15 for manufacturing a single-sided corrugated cardboard sheet D by bonding a back liner (second liner) C to a corrugated core B and a corrugated cardboard sheet D. A double facer 20 for manufacturing a double-sided corrugated board sheet E by attaching a front liner (first liner) A to the core B side of the single-sided corrugated board sheet D, and a mill roll stand (roll paper support device) 11 for supporting the roll paper R. , 13, 17 and so on. As a result, the chucks 61 and 62 of the mill roll stands 11, 13 and 17 can properly support the core tube R1 regardless of the size and type of the core tube R1. As a result, it is possible to improve workability in the support work of the roll paper R by eliminating the need for damage to the core tube R1 due to an inappropriate chuck and replacement work for the chucks 61 and 62, and to improve the efficiency of the corrugated cardboard sheet manufacturing work. be able to.

In the above-described embodiment, the chuck body has a solid shape, but a hollow shape may be used to reduce the weight.

10 Corrugated 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 shear 22 Slitter scorer 23 Cutoff 24 Defective product discharge device 25 Stacker 31, 32, 33 , 34 Preheating roll 40A 1st roll support 40B 2nd roll support 41,42 Frame 43 Rotating shaft (support shaft)
44 Rotating shaft drive device 45, 46 Support arm 45a, 46a First support part 45b, 46b Second support part 47 Screw shaft (arm moving device)
48 Screw shaft drive device (arm movement device)
51 Keys 52, 53 Support holes 54, 55 Key grooves 56, 57 Support members 56, 57
58, 59 Threaded parts 61, 62 Chuck (Chuck for roll paper)
63 Detection sensor 64 Operation control panel (control device)
71 Chuck body 72, 101, 111 Support member 73 Support surface part 74, 102, 112 Locking part 81 Mounting part 82 Support part 83 Stopper part 84 Guide groove (guide part)
85 Connecting hole 86 Female thread 87 Connecting rod 88 Male thread 91 Support body 92 Flange 93 Guide protrusion (guide)
94 Receiving surface 95 Mounting recess 96, 103, 113 Locking member 97 Bolt A Table liner (1st liner)
B Core C Back liner (2nd liner)
D Single-sided corrugated cardboard sheet E Continuous double-sided corrugated cardboard sheet F Sheet-shaped double-sided corrugated cardboard sheet R Roll paper R1 Core tube R2 Continuous paper R3 Base O Center line

Claims (13)

In a chuck that is inserted into a core tube of roll paper and supported.
A chuck body that has a conical shape and is provided with a plurality of guide portions along the axial direction on the outer peripheral surface.
A plurality of support members having a receiving surface portion that is movably supported by the chuck main body by the plurality of guide portions and that the end portion of the core tube can be contacted with
A support surface portion provided on the support member and capable of surface contact with the inner peripheral surface of the core tube,
A locking portion provided on the support member so as to project outward in the radial direction from the support surface portion and capable of contacting the inner peripheral surface of the core tube.
Chuck for roll paper. The locking portion has a tapered shape toward the outside in the radial direction.
The roll paper chuck according to claim 1. The locking portion is provided along the axial direction of the chuck body.
The roll paper chuck according to claim 1 or 2. The support surface portion is provided along the axial direction and the circumferential direction of the chuck body, and the locking portion is provided at an intermediate position in the circumferential direction of the support surface portion.
The roll paper chuck according to any one of claims 1 to 3. The receiving surface portion and the supporting surface portion are arranged orthogonally, and the locking portion is provided from the receiving surface portion to an intermediate position in the axial direction of the chuck body on the supporting surface portion.
The roll paper chuck according to any one of claims 1 to 4. The length of the locking portion in the radial direction of the chuck body becomes shorter toward the front in the insertion direction into the core tube.
The roll paper chuck according to any one of claims 1 to 5. The locking portion is detachably provided on the support member.
The roll paper chuck according to any one of claims 1 to 6. The chuck body is connected to a mounting portion, a support portion whose one end is connected to the mounting portion to provide the plurality of guide portions, and the other end of the support portion to the core tube of the support member. Has a stopper that prevents the forward movement of the
The roll paper chuck according to any one of claims 1 to 7. The stopper portion has a conical shape, and the maximum outer diameter of the stopper portion is a dimension equal to or less than the minimum inner diameter of the core tube.
The roll paper chuck according to claim 8. A pair of frames and
A support shaft in which each end in the axial direction is supported by the pair of frames, and
A pair of support arms whose base end is supported by the support shaft,
A drive device that brings the pair of support arms closer to each other and
The roll paper chuck according to any one of claims 1 to 9, which is attached to the tip ends of the pair of support arms.
Roll paper support device. A control device for driving and controlling the drive device is provided, and the control device is pushed by the pair of support arms at a predetermined insertion position when the chuck is inserted into the core tube by bringing the pair of support arms close to each other. Increase pressure,
The roll paper support device according to claim 10. The pressing force by the pair of support arms raised at the predetermined insertion position is made of metal on the inner surface of the end portion rather than the pressing force when the metal base tube is inserted into the core tube on which the metal base is not attached to the inner surface of the end portion. Increase the pressing force when inserting into the core tube to which the base is attached.
The roll paper support device according to claim 11. A single facer that manufactures a single-sided corrugated cardboard sheet by attaching a second liner to a corrugated core, and
A double facer for manufacturing a corrugated board sheet by attaching a first liner to the core side of the single-sided corrugated board sheet, and
The roll paper support device according to any one of claims 10 to 12, which supports the roll paper of the first liner, the roll paper of the second liner, and the roll paper of the core paper serving as the core.
A corrugated board sheet manufacturing device.

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