Roll supporting device and printer

Abstract

To provide a roll supporting device capable of stably supporting a roll, and a printer.SOLUTION: A roll supporting device comprises a shaft member 200 inserted into a through-hole of a roll, and a flange unit 300 detachably attached to the shaft member 200. The flange unit 300 comprises a flange frame 310 attached to the shaft member 200 and having a first hole 313 disposed on its outer peripheral surface, a fixing member 320 for fixing the flange frame 310 to the shaft member 200, a claw member 330 having an engagement part which engages with an inner peripheral surface of the through-hole of the roll, and a fixing plate 340 fixing the claw member 330 and having a second hole 344. The claw member 330 has a first protrusion 333 and a second protrusion 334, is fixed to the flange frame 310 by inserting the first protrusion 333 into the first hole 313, and is fixed to the fixing plate 340 by inserting the second protrusion 334 into the second hole 344.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a roll support device and a printing device. [Background technology]

[0002] Patent Document 1 discloses the configuration of a core support device that can rotatably support cores of different diameters by fitting and fixing core support chucks that expand or contract in the diameter direction to both ends of a cylindrical core. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-329990 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the configuration described in Patent Document 1 has a problem in that when the shaft diameter of the cylindrical winding core is small, it is difficult to process a chuck that can accommodate the small shaft diameter. In addition, it is necessary to process a dedicated chuck, which increases costs. [Means for solving the problem]

[0005] The roll body support device supports a roll body around which a sheet-like medium is wound, and includes an axial member inserted into a through hole of the roll body, and a flange unit removably attached to the axial member, and the flange unit includes a flange frame attached to the axial member and having a first hole on its outer peripheral surface, a fixing member fixing the flange frame to the axial member, a claw member having an engaging portion that engages with the inner peripheral surface of the through hole of the roll body, and a fixing plate fixing the claw member and having a second hole, and the claw member has a first convex portion and a second convex portion, and is fixed to the flange frame by inserting the first convex portion into the first hole, and is fixed to the fixing plate by inserting the second convex portion into the second hole.

[0006] The printing apparatus includes the roll support device described above. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of a printing apparatus. [Diagram 2] FIG. 1 is a perspective view showing a configuration of a printing apparatus. [Diagram 3] FIG. 1 is a perspective view showing a configuration of a printing apparatus. [Figure 4] FIG. 4 is a perspective view showing the configuration of a roll body and a flange unit. [Diagram 5] 5 is an enlarged perspective view showing a portion D of the roll body and the flange unit shown in FIG. 4. [Figure 6] FIG. 4 is a perspective view showing a configuration of a flange unit. [Figure 7] FIG. [Figure 8] FIG. 4 is a perspective view showing a configuration of a flange unit. [Figure 9] FIG. [Figure 10] FIG. 4 is a cross-sectional view showing a configuration of a flange unit. [Figure 11] 13 is a cross-sectional view showing a configuration of a claw member according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] In the following drawings, the three mutually orthogonal axes are referred to as the X-axis, Y-axis, and Z-axis. The direction along the X-axis is referred to as the "X-direction", the direction along the Y-axis is referred to as the "Y-direction", and the direction along the Z-axis is referred to as the "Z-direction", with the arrow direction being the + direction and the direction opposite to the + direction being the - direction. The Z-axis is a virtual axis that runs vertically, with the +Z direction being upward and the -Z direction being downward. The -Z direction is the direction in which gravity acts. The width direction B is the X-direction, and the conveying direction A is the +Y direction.

[0009] The configuration of a printing device 1 will be described with reference to FIG.

[0010] As shown in FIG. 1, the printing device 1 includes a transport unit 20 capable of transporting a sheet-shaped medium M in a transport direction A.

[0011] The transport unit 20 includes a payout unit 2 that is capable of setting a roll 100 on which the medium M is wound and rotating in a rotation direction C1 to pay out the medium M. The transport unit 20 also includes a transport belt 5 that is capable of transporting the medium M paid out from the payout unit 2 in a transport direction A. The roll 100 has a cardboard tube 120 (see FIG. 4) and the medium M wound around the cardboard tube 120.

[0012] The transport unit 20 includes a driven roller 3 located upstream in the transport direction A, a drive roller 4 located downstream in the transport direction A, and a transport belt 5 which is an endless belt stretched between the driven roller 3 and the drive roller 4. The transport unit 20 further includes a detection unit 16 which is capable of detecting the center position in the width direction B of the medium M set in the pay-out unit 2 by detecting both ends of the medium M in the width direction B which intersects with the transport direction A.

[0013] The conveyor belt 5 is an adhesive belt having an outer peripheral surface 5a coated with an adhesive on its outer surface, which is a support surface for the medium M. The medium M is supported by the conveyor belt 5 and conveyed with the medium M affixed to the outer peripheral surface 5a.

[0014] In the printing device 1 of this embodiment, the support area of ​​the conveyor belt 5 for the medium M is the upper area bridged by the driven roller 3 and the driving roller 4. The driving roller 4 is a roller that rotates by the driving force of the motor 15, and the driven roller 3 is a roller that rotates by being driven by the rotation of the conveyor belt 5 that accompanies the rotation of the driving roller 4.

[0015] The printing device 1 of this embodiment includes driven rollers 8 and 18 between the delivery unit 2 and the conveyor belt 5 in the conveying direction A, which are rotated in response to the conveyance of the medium M. A brake roller 7 is disposed between the driven rollers 8 and 18.

[0016] The brake roller 7, like the drive roller 4, rotates by the driving force of the motor 15. The brake roller 7 rotates in the rotation direction C1 so that the conveying speed at which the medium M is conveyed by the brake roller 7 is slower than the conveying speed of the medium M supported and conveyed by the conveyor belt 5.

[0017] By rotating the brake roller 7 in this manner, tension is applied to the medium M in the transport direction A between the brake roller 7 and the transport belt 5, and the medium M is supported by the transport belt 5 in a state where tension is applied in the transport direction A. The printing device 1 also includes a pressure roller 6 in an area facing the transport belt 5 that presses the medium M against the transport belt 5.

[0018] The printing device 1 includes a carriage 70 that can move back and forth in the width direction B of the conveyor belt 5, and a head 71 attached to the carriage 70. The head 71 functions as a recording unit that can record an image on a medium M that is conveyed in the conveying direction A based on recording data.

[0019] The printing device 1 is capable of forming an image by ejecting ink from the head 71 onto the transported medium M while moving the carriage 70 back and forth in a width direction B intersecting with the transport direction A. By being equipped with a carriage 70 configured in this manner, the printing device 1 of this embodiment is capable of forming a desired image on the medium M by repeating the process of transporting the medium M in the transport direction A by a predetermined transport amount and ejecting ink while moving the carriage 70 in the width direction B with the medium M stopped.

[0020] The printing device 1 includes a so-called serial head type recording unit in which a head 71 mounted on a carriage 70 moves back and forth in the width direction B. However, the printing device 1 is not limited to such a recording unit. For example, the printing device 1 may be a line head type recording unit in which the head 71 extends in the width direction B and is fixed, and a plurality of nozzles that eject ink along the width direction B are arranged.

[0021] When the medium M on which an image is formed by ejecting ink from the head 71 is ejected from the printing device 1, it is sent to a drying device that volatilizes the ink components ejected onto the medium M, which is located downstream of the printing device 1, or a winding device that winds up the medium M on which the image is formed.

[0022] A printable material can be preferably used as the medium M. The printable material refers to fabrics, clothing, and other clothing products that are the subject of printing. Fabrics include woven fabrics, knitted fabrics, and nonwoven fabrics made of natural fibers such as cotton, silk, and wool, chemical fibers such as nylon, and composite fibers that are a mixture of these.

[0023] Furthermore, clothing and other clothing products include sewn T-shirts, handkerchiefs, scarves, towels, carrier bags, cloth bags, furniture such as curtains, sheets, bed covers, etc., as well as fabrics that exist as parts before sewing and before or after cutting. However, in addition to the above-mentioned printed materials, ordinary paper, wood-free paper, glossy paper, and other papers dedicated to inkjet printing can also be used.

[0024] When a printable material is used as the medium M, the printable material is prone to ink strike-through, a phenomenon in which ink ejected onto the medium M seeps through to the back surface, and the conveyor belt 5 may become dirty with ink. Therefore, the printing device 1 is provided with a cleaning unit 9 for cleaning ink that has struck through and adhered to the conveyor belt 5. The cleaning unit 9 is provided with a storage unit 14 for storing cleaning liquid, a cleaning roller 10 that is soaked in the cleaning liquid and comes into contact with the conveyor belt 5, and a blade unit 11 that wipes the cleaning liquid adhered to the conveyor belt 5.

[0025] The printing device 1 is capable of transporting the medium M in a transport direction A by rotating the drive roller 4 in a rotation direction C1. The printing device 1 is also capable of transporting the medium M in the direction opposite to the transport direction A by rotating the drive roller 4 in a rotation direction C2 that is the opposite direction to the rotation direction C1. As shown in FIG. 1, the printing device 1 is also equipped with a control unit 40 that performs overall control of each component of the printing device 1.

[0026] As described above, the printing device 1 of this embodiment includes a payout unit 2 on which a roll body 100 on which medium M is wound is set and which pays out the medium M, a conveyor belt 5 which conveys the medium M paid out from the payout unit 2 in a conveying direction A, a head 71 which forms an image on the medium M conveyed by the conveyor belt 5 based on recording data, and a detection unit 16 which detects the center position in the width direction B of the medium M set in the payout unit 2.

[0027] The printing device 1 includes a first projection unit 50 downstream of the head 71 in the transport direction A, and includes a second projection unit 60 upstream of the head 71 in the transport direction A.

[0028] Next, the configurations of the first projection section 50 and the second projection section 60 will be described with reference to FIGS.

[0029] The printing device 1 includes a housing 80 in which a carriage 70 is provided. As shown in Fig. 2, a first projection unit 50 capable of changing a projection position under the control of the control unit 40 is provided at the downstream end of the housing 80 in the transport direction A.

[0030] The first projection unit 50 projects an intended formation position IE of an end of an image in the width direction B recorded by the printing device 1. Specifically, in the printing device 1 of this embodiment, a first projection unit 50A and a first projection unit 50B are provided as the first projection unit 50.

[0031] Of these, the first projection unit 50A projects an intended formation position IE1 of an end of the image on the direction B1 side of the width direction B. The first projection unit 50B projects an intended formation position IE2 of an end of the image on the direction B2 side of the width direction B.

[0032] Here, when multiple images are formed side by side in the width direction B, the first projection unit 50A projects the intended formation position IE of the end portion on the direction B1 side of the image closest to the direction B1 as the intended formation position IE1, and the first projection unit 50B projects the intended formation position IE of the end portion on the direction B2 side of the image closest to the direction B2 as the intended formation position IE2. Note that in the printing device 1 of this embodiment, the control unit 40 is capable of grasping the intended formation positions IE of the end portions of the images in the width direction B based on the recording data.

[0033] 3, a second projection unit 60 capable of changing the projection position under the control of the control unit 40 is provided at the upstream end of the housing 80 in the transport direction A. The second projection unit 60 projects a first central area 5C including the center position of the transport belt 5 in the width direction B, and a second central area MC including the center position of the roll body 100 of the medium M in the width direction B.

[0034] Specifically, in the printing device 1 of this embodiment, a second projection unit 60A and a second projection unit 60B are provided as the second projection unit 60. Of these, the second projection unit 60A projects the first central region 5C, and the second projection unit 60B projects the second central region MC.

[0035] The control unit 40 stores data on the center position of the conveyor belt 5 in advance, and is capable of grasping the center position of the roll body 100 in the width direction B based on the detection result of the detection unit 16.

[0036] In this way, the printing device 1 is provided with a first projection unit 50 downstream of the head 71 in the transport direction A that projects a planned formation position IE of an end portion of an image in the width direction B based on recording data. Furthermore, the printing device 1 is provided with a second projection unit 60 upstream of the head 71 in the transport direction A that projects a first central area 5C including the central position of the transport belt 5 in the width direction B, and a second central area MC including the central position of the roll body 100 in the width direction B detected by the detection unit 16. The printing device 1 is provided with a roll body supporting device 1000.

[0037] Next, the configuration of the roll body supporting device 1000 will be described with reference to FIGS.

[0038] 4, the roll body support device 1000 is used to support a roll body 100 around which a sheet-like medium M is wound. The roll body support device 1000 includes a shaft member 200 and a flange unit 300.

[0039] 5, the shaft member 200 is inserted into the through hole 110 of the roll body 100. The diameter of the through hole 110 is determined according to, for example, the type of medium M and the thickness of the medium M. The diameter of the through hole 110 is, for example, 1 inch. Therefore, the diameter of the shaft member 200 inserted into the through hole 110 is also 1 inch.

[0040] 6 and 7, the flange unit 300 is detachably attached to the shaft member 200. The flange unit 300 includes a flange frame 310, a fixing member 320, a claw member 330, and a fixing plate 340.

[0041] The flange frame 310 is provided with a through hole 311. The flange frame 310 is fitted onto the outer periphery of the shaft member 200. The flange frame 310 is fixed to the shaft member 200 by a fixing member 320. The fixing member 320 is provided with a screw. The flange frame 310 is fixed to the outer periphery of the shaft member 200 by inserting the fixing member 320 into the through hole 312 of the flange frame 310 and rotating the fixing member 320. That is, the position of the flange frame 310 is fixed.

[0042] A first hole 313 is provided on the outer circumferential surface of the flange frame 310 (see FIG. 10). Into the first hole 313, a first protrusion 333 of a claw member 330, which will be described later, is inserted.

[0043] The claw member 330 is a plate-like member formed by, for example, sheet metal processing or press processing. As shown in Fig. 10, the claw member 330 has a first protrusion 333, a second protrusion 334, and an engagement portion 335. The first protrusion 333 is provided on a first surface 330a of the claw member 330. The second protrusion 334 is provided on a second surface 330b intersecting with the first surface 330a. The claw member 330 also has an inclined portion 336 including the engagement portion 335.

[0044] The engaging portion 335 is a portion of the claw member 330 where the inner circumferential surface 110a of the through hole 110 of the roll body 100 and the inclined portion 336 of the claw member 330 engage with each other.

[0045] The fixing plate 340 is arranged to fix the claw member 330. The fixing plate 340 is provided with a second hole 344. The fixing plate 340 has a through hole 341, and is inserted into the flange frame 310 via the through hole 341. The claw member 330 is fixed to the flange frame 310 by inserting the first protrusion 333 into the first hole 313, and is fixed to the fixing plate 340 by inserting the second protrusion 334 into the second hole 344.

[0046] 6, a plurality of first holes 313 are provided at regular intervals in the circumferential direction on the outer circumferential surface of the flange frame 310. In this embodiment, three first holes 313 are provided in the flange frame 310, each of which is equally spaced in the circumferential direction.

[0047] Further, a plurality of second holes 344 are provided at regular intervals in the circumferential direction in the flat portion of the fixing plate 340. In this embodiment, three second holes 344 are provided in the fixing plate 340, each of which is equally spaced in the circumferential direction.

[0048] In this manner, since a plurality of first holes 313 are provided in the flange frame 310 and a plurality of second holes 344 are provided in the fixing plate 340, three claw members 330 can be attached to the flange frame 310 and the fixing plate 340.

[0049] As described above, the flange unit 300 is configured by combining the claw members 330, the fixed plate 340, and the flange frame 310, so compared to an air chuck or the like, even if the through hole 110 of the cardboard tube 120 of the roll body 100 is narrow, the roll body 100 can be supported in accordance with the size of the through hole 110 with a relatively simple configuration. Also, for example, compared to an air chuck or the like, the flange unit 300 can be configured more simply, and the associated costs can be reduced.

[0050] Furthermore, by configuring the flange unit 300 with three claw members 330, the claw members 330 can be evenly arranged around the periphery of the flange frame 310, in other words, in the circumferential direction of the cardboard tube 120 of the roll body 100. Therefore, the roll body 100 can be stably fixed to the shaft member 200.

[0051] The flange unit 300 including the claw members 330 is made of, for example, a metal material and is formed by sheet metal processing. Note that the material is not limited to metal, and may be a resin material or other material as long as it is capable of supporting the roll body 100.

[0052] In this way, since the claw member 330 is formed by sheet metal processing, even if the through hole 110 of the cardboard tube 120 of the roll body 100 is narrow, the flange unit 300 can be formed easily compared to one formed by an air chuck or the like.

[0053] Moreover, the claw member 330 has an inclined portion 336 on the side opposite to the side that contacts the flange frame 310. In the claw member 330, the portion of the inclined portion 336 that contacts the cardboard tube 120 of the roll body 100 becomes the engagement portion 335. Specifically, the engagement portion 335 of the claw member 330 bites into the inner circumferential surface 110a of the cardboard tube 120 of the roll body 100, thereby enabling the roll body 100 and the flange unit 300 to be fixed together.

[0054] Furthermore, since the claw member 330 has the inclined portion 336, even if there is variation in the size of the through hole 110 of the cardboard tube 120 of the roll body 100, by pushing the flange unit 300 along the axial direction of the shaft member 200, it is possible to cause the claw member 330 to firmly bite into the cardboard tube 120, and the roll body 100 can be rotated reliably.

[0055] 8 and 9, the fixing plate 340 is fixed by a C-ring 350. Specifically, a groove into which the C-ring 350 fits is provided at a predetermined location of the flange frame 310. By fitting the C-ring 350 into the groove of the flange frame 310, the fixing plate 340 is fixed and the C-ring 350 can be prevented from coming off the flange frame 310.

[0056] As described above, the roll body support device 1000 of the present embodiment is a roll body support device 1000 that supports the roll body 100 around which the sheet-like medium M is wound, and includes the shaft member 200 that is inserted into the through hole 110 of the roll body 100, and the flange unit 300 that is detachably attached to the shaft member 200. The flange unit 300 includes a flange frame 310 that is attached to the shaft member 200 and has a first hole 313 on its outer circumferential surface, and a flange frame The roll body 100 includes a fixing member 320 that fixes the flange frame 310 to the shaft member 200, a claw member 330 having an engagement portion 335 that engages with the inner surface 110a of the through hole 110 of the roll body 100, and a fixing plate 340 that fixes the claw member 330 and has a second hole 344. The claw member 330 has a first convex portion 333 and a second convex portion 334, and is fixed to the flange frame 310 by inserting the first convex portion 333 into the first hole 313, and is fixed to the fixing plate 340 by inserting the second convex portion 334 into the second hole 344.

[0057] According to this configuration, the flange unit 300 is constructed by combining parts such as the claw members 330 and the fixed plate 340, so compared to an air chuck or the like, even if the through hole 110 of the cardboard tube 120 of the roll body 100 is narrow, the roll body 100 can be stably supported in accordance with the through hole 110. Also, for example, compared to an air chuck or the like, the flange unit 300 can be constructed more simply, and the associated costs can be reduced.

[0058] In the roll body supporting device 1000 of the present embodiment, it is preferable that a plurality of first holes 313 are provided in the flange frame 310, and a plurality of second holes 344 are provided in the fixed plate 340. According to this configuration, since a plurality of first holes 313 and a plurality of second holes 344 are provided, for example, by preparing a plurality of claw members 330 and inserting the first convex portions 333 and the second convex portions 334 into the first holes 313 and the second holes 344, the claw members 330 can be uniformly arranged over the entire circumference of the flange frame 310.

[0059] In the roll body support device 1000 of the present embodiment, the claw members 330 are preferably formed by sheet metal processing. According to this configuration, since the claw members 330 are formed by sheet metal processing, even if the through hole 110 of the cardboard tube 120 of the roll body 100 is narrow, cutting processing is not required as much as possible, and the flange unit 300 can be formed relatively easily.

[0060] Moreover, in the roll body support device 1000 of the present embodiment, it is preferable that the engagement portion 335 of the claw member 330 is inclined with respect to the outer circumferential surface of the shaft member 200. According to this configuration, since the engagement portion 335 of the claw member 330 is inclined, even if there is variation in the size of the through-hole 110 of the cardboard tube 120 of the roll body 100, it is possible for the claw member 330 to firmly bite into the cardboard tube 120, and the roll body 100 can be reliably rotated.

[0061] Moreover, the printing device 1 of the present embodiment includes the above-described roll body support device 1000. With this configuration, it is possible to provide a printing device 1 capable of supporting the roll body 100 even when the through hole 110 of the cardboard tube 120 of the roll body 100 is narrow.

[0062] Modifications of the above embodiment will now be described.

[0063] As described above, the claw member 330 is not limited to having the inclined portion 336 on the side opposite to the side that abuts against the flange frame 310, but may be configured with a multi-step portion 1336 as shown in FIG.

[0064] 11, the multi-step portion 1336 is provided with a plurality of flat portions 336A with different distances in the radial direction of the shaft member 200. The distance from the shaft member 200 to the flat portions 336A is provided so as to gradually increase in the direction from the tip portion 330Aa to the rear end portion 330Ab of the claw member 330A. Between adjacent flat portions 336A, there are provided slope portions 336B whose diameter gradually increases in the direction from the tip portion 330Aa to the rear end portion 330Ab.

[0065] In the claw member 330A of the modified example, the roll body 100 is supported on the flat portion 336A that is closest to the shaft member 200, i.e., the flat portion 336A with the smallest diameter. Even if there is variation in the size of the through-hole 110 of the cardboard tube 120 of the roll body 100, since the inclined portion 336B is provided, by pressing the flange unit 300 along the axial direction of the roll body 100, it is possible to make the inclined portion 336B bite into the cardboard tube 120, and the roll body 100 can be supported.

[0066] In this way, it is preferable that the engaging portion 335 has flat portions 336A with different distances in the radial direction of the shaft member 200. According to this configuration, the flat portions 336A with different distances, in other words, the engaging portion 335 has a multi-stage shape, so that even if there are multiple sizes of through holes 110 in the cardboard tube 120 of the roll body 100, by forming the engaging portion 335 that fits the size of the through hole 110 in advance, it is possible to deal with the situation without replacing the claw member 330A.

[0067] Furthermore, as described above, one claw member 330 is not limited to having one first convex portion 333 and one second convex portion 334, and may have a plurality of first convex portions 333 and a plurality of second convex portions 334.

[0068] Specifically, a plurality of first protrusions 333 are provided along a first surface 330a of the claw member 330. A plurality of second protrusions 334 are provided along a second surface 330b of the claw member 330. The flange frame 310 is provided with a plurality of first holes 313 that mate with the plurality of first protrusions 333. The fixing plate 340 is provided with a plurality of second holes 344 that mate with the plurality of second protrusions 334.

[0069] Since one claw member 330 is fixed using the multiple first protrusions 333 and the multiple second protrusions 334 in this manner, the claw member 330 can be fixed to the flange frame 310 and the fixing plate 340 more stably.

[0070] As described above, the flange unit 300 is configured with three claw members 330, but is not limited to this and may be configured with four or more claw members 330. It is preferable to change the number of claw members 330 appropriately depending on the weight of the roll body 100 so that it can be stably supported.

[0071] Furthermore, as described above, the method for fixing the fixing plate 340 is not limited to using the C-ring 350, and it is also possible to fix it using, for example, a ball spring, a snap fit, or nut tightening. [Explanation of symbols]

[0072] 1...printing device, 2...feeding section, 3...driven roller, 4...driving roller, 5...conveyor belt, 5a...outer periphery, 5C...first central region, 6...pressurizing roller, 7...brake roller, 8...driven roller, 9...cleaning section, 10...cleaning roller, 11...blade section, 14...storage section, 15...motor, 16...detection section, 18...driven roller, 20...conveyor section, 40...control section, 50...first projection section, 50A...first projection section, 50B...first projection section, 60...second projection section, 60A...second projection section, 60B...second projection section, 70...carriage, 71...head, 80...housing, 100...roll body, 11 0...through hole, 110a...inner surface, 120...cardboard tube, 200...shaft member, 300...flange unit, 310...flange frame, 311, 312...through hole, 313...first hole, 320...fixing member, 330...claw member, 330a...first surface, 330A...claw member, 330Aa...tip portion, 330Ab...rear end portion, 330b...second surface, 333...first convex portion, 334...second convex portion, 335...engagement portion, 336...inclined portion, 336A...flat portion, 336B...inclined portion, 340...fixing plate, 341...through hole, 344...second hole, 350...C-ring, 1000...roll body support device, 1336...multi-stage shaped portion.

Claims

1. A roll body support device that supports a roll body around which a sheet-like medium is wound, a shaft member that is inserted into a through hole of the roll body; a flange unit detachably attached to the shaft member; Equipped with The flange unit includes: a flange frame attached to the shaft member and having a first hole on an outer circumferential surface thereof; a fixing member that fixes the flange frame to the shaft member; a claw member having an engagement portion that engages with an inner peripheral surface of the through hole of the roll body; a fixing plate for fixing the claw member and having a second hole; Equipped with The claw member has a first convex portion and a second convex portion, and is fixed to the flange frame by inserting the first convex portion into the first hole, and is fixed to the fixed plate by inserting the second convex portion into the second hole.

2. The roll body supporting device according to claim 1 , The flange frame is provided with a plurality of the first holes, The fixed plate is provided with a plurality of the second holes.

3. The roll body supporting device according to claim 1 , The claw members of the roll body supporting device are formed by sheet metal processing.

4. The roll body supporting device according to claim 1 , The engaging portion of the claw member is inclined with respect to the outer circumferential surface of the shaft member.

5. The roll body supporting device according to claim 1 , The engagement portion has portions at different distances in a radial direction of the shaft member.

6. A printing apparatus comprising the roll body supporting device according to any one of claims 1 to 5.

Images