JP2007090707A - Roll body holding device, recording device, and roll body holding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roll body holding device capable of holding roll bodies with different inner diameters of paper tubes. <P>SOLUTION: First elastic pieces 6 are pressed and contacted to the paper tube inner face by inserting the protruding portion 5 of a holding device body 1 into the paper tube without mounting an adapter 2 in the case of holding a roll body with a small inner diameter of a paper tube by the roll body holding device 15. A sheath portion 8 is covered to a protruding portion 5 and detent portions 9 are inserted in slots 7, thereafter the adapter 2 is turned to engage the detent porions 9 with the slots 7, the first elastic pieces 6 are fitted into fitting recessed portions 11, and the adapter 2 is mounted to the holding device body 1 so as not to be able to be removed and rotated in the case of holding a roll body with a large inner diameter of a paper tube. Thereafter the sheath portion 8 is inserted into the paper tube to press and contact second elastic pieces 10 to the inner face of the paper tube. The engagement between the detent portions 9 and the slots 7 are released by rotating the adapter 2 after releasing the fitting between the first elastic pieces 6 and the fitting recessed portions 11 by inserting a releasing member 3 into the gap between the protruding portion 5 and the sheath portion 8 when dismounting the adapter 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a roll body holding device, a recording apparatus having the roll body, and a roll body holding method.

  Conventionally, when a web material (continuous long recording medium) is continuously supplied to an apparatus such as a printer, a roll body around which the web material is wound is prepared, and the web material is sequentially fed from the roll body. Is adopted. In particular, in the case of a large printer, a large and heavy web material is often used. Therefore, a roll body is formed by winding a web material around a central axis that is a core material. The central axis is a cylinder or cylinder made of corrugated cardboard, synthetic resin, or the like, and can hold a heavy web material without being greatly bent. And when setting the roll body of the configuration in which the web material is wound around the central axis to the apparatus, the roll body is not supported for the downsizing of the apparatus and the simplification of the configuration. It is common to support both ends of the central axis, particularly both ends of the central axis.

  Patent Document 1 discloses a scroller that supports a central axis of a roll body by two roller-shaped bearing members, rotates the two bearing members in the same direction to rotate the entire roll body, and feeds or winds the web material. Is disclosed.

On the other hand, Patent Document 2 discloses a configuration in which a support mechanism is inserted inside a paper tube (cylindrical central axis), and a contact member presses the paper tube from the inside to hold the roll body. . The cylindrical central axis is generally called a “paper tube”, but is not limited to a paper tubular member, and a synthetic resin tubular member such as vinyl chloride is also widely used.
Japanese Patent Laying-Open No. 2005-212322 JP-A-5-77976

  In the configuration disclosed in Patent Document 1, since the outer peripheral surface of the central axis of the roll body is supported, the part supported by the two bearing members is only a part of the outer periphery of the central axis. There is a high possibility of rattling when the web material is unwound and wound, and the holding stability of the roll body is low. In particular, when the outer diameter of the central shaft is large, the proportion of the portion supported by the two bearing members in the outer periphery of the central shaft is very small, and the stability of holding the roll body is further reduced. On the other hand, when the outer diameter of the central shaft is too small, the central shaft may fall between the two bearing members and may not be securely held.

  In the configuration disclosed in Patent Document 2, since the inner surface of the paper tube (cylindrical central axis of the roll body) is supported, most of the inner periphery of the paper tube can be supported from the inside. Compared to the configuration of Document 1, the stability of holding the roll body is high. However, even in the configuration of Patent Document 2, when the inner diameter of the paper tube is too large, a gap is opened between the inner surface of the paper tube and the abutting member, and rattling occurs when the web material is fed and wound. Therefore, the web material cannot be smoothly advanced and retracted, and the end of the web material may be bent or skew (skew) may occur. Further, when the inner diameter of the paper tube is too small, naturally, the support mechanism cannot be inserted into the paper tube, and the roll body cannot be held at all.

  Thus, even the configuration of Patent Document 2 that supports the inner surface of the paper tube can be used only for holding a roll body having a paper tube having a specific inner diameter. In general, the inner diameter of the paper tube is standardized to some extent, but there are still various roll bodies having paper tubes having different inner diameters such as 2 inches (50.8 mm) and 3 inches (76.2 mm). In the configuration of Patent Document 2, a dedicated roll body holding device for holding a roll body having a paper tube having an inner diameter with a specific dimension is used. When it is desired to hold various roll bodies having paper tubes having different inner diameters, it is necessary to replace the roll body holding device itself. Therefore, the same number of roll body holding devices as the standard number of the inner diameter of the paper tube that is supposed to be used must be prepared.

  Accordingly, an object of the present invention is to provide a roll body holding device and a roll body holding method capable of holding a roll body stably and holding a plurality of types of roll bodies, and a recording apparatus having the roll body holding apparatus. There is.

The roll body holding device of the present invention is
A flange portion disposed in the vicinity of the end portion of the roll body, a protrusion portion that protrudes from the flange portion and can be inserted into the center hole of the roll body, and a cover provided around the protrusion portion of the flange portion. A holding device body including an engaging portion and a first elastic piece provided on the outer peripheral portion of the protruding portion;
A sheath portion having an outer shape larger than the outer shape of the projecting portion, an engagement portion provided around the sheath portion and engageable with the engaged portion, and an inner portion of the sheath portion An adapter that is provided on the periphery and includes a fitting recess into which the first elastic piece of the protruding portion can be fitted;

  According to this configuration, when the roll body is held only by the holding device main body without mounting the adapter, and when the roll body is held by mounting the adapter on the holding device main body, the roll body having a different inner diameter of the center hole is used. Can be retained.

  In the adapter, the sheath portion is put on the protruding portion, the engaging portion is engaged with the engaged portion, and the first elastic piece of the protruding portion is fitted in the fitting concave portion, whereby the holding device body It is preferable that it is mounted so that it cannot rotate. According to this configuration, the adapter rotates relative to the holding device body even when the adapter is mounted on the holding device body, particularly when the roll body is rotated and fed or taken up. Will not come off.

  Furthermore, the first elastic piece is fitted into the fitting recess by inserting a thin plate-like member into the gap between the inner periphery of the sheath portion and the outer periphery of the protruding portion from the opening provided at the tip of the sheath portion. It is preferable that it can be released by doing so. In this case, as described above, the adapter that is non-rotatably mounted to prevent detachment can be easily rotated by a simple operation. Therefore, it is very easy to remove the adapter from the holding device body. A cylindrical release member may be provided as the thin plate member.

  The adapter has a second elastic piece provided on the outer periphery of the sheath, and the first elastic piece is not attached to the adapter in the center hole of the roll body having a relatively small center hole. When the protruding portion of the holding device body in the state is inserted, the second elastic piece is in pressure contact with the inner surface of the center hole from the inside, and the second elastic piece is in the center hole of the roll body having a relatively large center hole. When the protrusion of the holding device main body to which the adapter is attached and having the sheath covered is inserted, the inner surface of the center hole is pressed from the inside. Thereby, the roll body having a relatively small center hole and the roll body having a relatively large center hole can be selectively and securely held.

  The recording apparatus of the present invention includes the roll body holding device having any one of the above-described configurations and a recording unit that performs recording on a recording medium fed from the roll body held by the roll body holding apparatus.

Further, the roll body holding method of the present invention is based on a holding device body having a protruding portion and a sheath portion that has a larger outer shape than the protruding portion and can be covered with the protruding portion. Using a removable adapter,
When holding a roll body having a small-diameter center hole, the first elastic member provided on the outer peripheral portion of the protrusion is formed by inserting the protrusion of the holding device body into the center hole without attaching an adapter. Hold the roll body by pressing the piece to the inner surface of the center hole from the inside,
When holding a roll body having a large-diameter center hole, an adapter is attached to the holding device main body, the sheath portion is inserted into the center hole, and a second elasticity provided on the outer peripheral portion of the sheath portion. The piece is pressed against the inner surface of the center hole from the inside to hold the roll body.

  The step of attaching the adapter to the holding device main body includes covering the sheath portion with the protruding portion, engaging the engaging portion of the adapter with the engaged portion of the holding device main body, and the first elastic piece of the holding device main body, In this step, the adapter is held in a non-rotatable manner with respect to the holding device main body by fitting in a fitting recess provided on the inner periphery of the sheath.

  The step of removing the adapter from the main body of the holding device includes inserting a cylindrical release member into an annular gap between the sheath portion and the protruding portion from the opening at the tip of the sheath portion, and fitting the release member with the first elastic piece. Allowing the adapter to rotate relative to the retainer body by entering between the recesses and releasing their fit; and rotating the rotatable adapter relative to the retainer body; The step includes releasing the engagement between the engaging portion and the engaged portion, and finally, pulling the sheath portion away from the protruding portion.

  According to the present invention, a single roll body holding device can easily hold a plurality of types of roll bodies having different inner diameters of the center hole by a very simple operation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows the entire roll body holding device 15 of the present embodiment. The basic structure of the roll body holding device 15 includes a holding device main body 1, an adapter 2 that can be attached to and detached from the holding device main body 1, and a release member 3.

  The holding device main body 1 has a configuration in which a flange portion 4 is provided with a columnar protruding portion 5 that is slightly tapered, and a plurality of first elastic pieces 6 are formed on the outer peripheral portion of the protruding portion 5. ing. The first elastic piece 6 has a shape in which a part of the outer peripheral portion of the protruding portion 5 is cut out, is in a cantilever shape in the cutout portion, and is raised toward the outside. . A plurality of substantially arc-shaped long grooves (engaged portions) 7 are provided near the base of the protruding portion 5 of the flange portion 4. The long groove 7 has a wide groove width portion 7a and a narrow groove width portion 7b.

  The outer diameter of the protrusion 5 of the holding device body 1 is the inner diameter of a center hole (paper tube if a paper tube is present) of a roll body to be held with a small center hole (see FIG. 2). For example, the diameter is slightly smaller than 2 inches = 50.8 mm. And the maximum diameter which connected the outermost parts in the initial state of the 1st elastic piece 6 which mutually opposes is slightly larger than the internal diameter of the small center hole.

  The adapter 2 has a sheath portion 8 having a shape that covers the protruding portion 5, and the tip of the sheath portion 8 is open. A plurality of claw portions (engaging portions) 9 projecting toward the opposite side of the sheath portion 8 are provided in the vicinity of the root of the sheath portion 8. The number of the claw portions 9 is the same as that of the long grooves 7 and can be inserted into the long grooves 7 and engage with a part of the long grooves 7 (a portion 7b having a narrow groove width). A plurality of second elastic pieces 10 having the same configuration as the first elastic piece 6 are formed on the outer periphery of the sheath portion 8. As shown in FIGS. 6 and 7, the same number of first elastic pieces 6 as the first elastic pieces 6 are provided on the inner periphery of the sheath 8, and fitting recesses 11 into which the first elastic pieces 6 can be fitted are provided. .

  The outer diameter of the sheath portion 8 of the adapter 2 is the inner diameter (for example, 3) of the center hole (paper tube if a paper tube is present) of the roll body to be held having a large center hole (see FIG. 7). The diameter is slightly smaller than (inch = 76.2 mm). And the maximum diameter which connected the outermost parts in the initial state of the 2nd elastic piece 10 which mutually opposes is slightly larger than the internal diameter of the large center hole.

  Here, the relationship between each part of the holding device main body 1 and each part of the adapter 2 will be described. As shown in FIGS. 3 to 7, the adapter 2 is attached to the holding device main body 1 so that the sheath portion 8 covers the protruding portion 5, and is rotated relative to the holding device main body 1, thereby A position of 1 and a second position can be taken. As shown in FIGS. 6 and 7, in the first position, each claw portion 9 engages with the inner wall portion of the narrow groove portion 7 b of each long groove 7, so that the adapter 2 cannot be detached from the holding device main body 1. Furthermore, the adapter 2 is not rotatable with respect to the holding device main body 1 by fitting the first elastic pieces 6 into the fitting recesses 11 respectively. On the other hand, at the second position (not shown) in which the adapter 2 is rotated from the first position by a certain angle with respect to the holding device main body 1, each claw portion 9 is inserted into each long groove 7. However, it is located in the wide groove portion 7 a of the long groove 7 and is not engaged with the inner wall portion, and can escape from the long groove 7. In addition, each first elastic piece 6 is not fitted in each fitting recess 11. Therefore, in this second position, the adapter 2 can be rotated with respect to the holding device main body 1. Thus, normally, the adapter 2 is relatively rotatable with respect to the holding device body 1 from the second position to the first position within a range in which each claw portion 9 is located in each long groove 7. The adapter 2 becomes non-rotatable and non-detachable at the first position. In addition, when the wide groove | channel 7a of the long groove 7 is formed comparatively long, the 2nd position does not point to a single point, but the nail | claw part 9 has the wide groove width of the long groove 7. The whole range located in the part 7a is pointed out.

  The release member 3 includes a flange-shaped handle portion 12 and a cylindrical portion 13, and the cylindrical portion 13 is larger than the outer diameter of the protruding portion 5 of the holding device body 1, and is larger than the inner diameter of the sheath portion 8 of the adapter 2 and the inner diameter of the opening. It has a small diameter. Therefore, as shown in FIGS. 8 and 9, the release member 3 can be inserted into the gap between the protrusion 5 of the holding device body 1 and the sheath 8 of the adapter 2 from the opening of the sheath 8 of the adapter 2. is there.

  A method for holding the roll body in the roll body holding apparatus 15 will be described. As shown in FIG. 2, when holding a roll body having a small center hole (for example, 2 inches = 50.8 mm), the protruding portion 5 of the holding device main body 1 is placed at the center of the roll body without attaching the adapter 2. In this example, the paper tube 101A is inserted into the hole. At the time of insertion, the first elastic piece 6 is once shrunk radially inward and pressed against the inner surface of the paper tube 101A by elasticity. Since the first elastic pieces 6 are distributed over the entire circumference of the protruding portion 5, the entire inner surface of the paper tube 101A is held relatively evenly without being biased. The holding method using such an elastic piece is a conventionally known method.

  On the other hand, as shown in FIG. 7, when holding a roll body having a large center hole (for example, 3 inches = 76.2 mm), the adapter 2 is attached to the holding device body 1. This mounting method will be described. First, the adapter 2 is positioned at the second position described above. That is, each claw portion 9 is inserted into the wide groove portion 7 a of the long groove 7 while covering the protruding portion 5 with the sheath portion 8. At this time, each 1st elastic piece 6 exists in the position away from each fitting recessed part 11, and is the state elastically contracted by the inner surface of the sheath part 8 to radial direction. Next, the adapter 2 is rotated relative to the holding device body 1 and moved to the first position. By this relative rotation, as shown in FIGS. 6 and 7, each claw portion 9 moves to the narrow portion 7 b of the long groove 7 and engages with the inner wall portion thereof. Due to the engagement between the claw portion 9 and the long groove 7, the adapter 2 cannot be removed from the holding device body 1. At the same time, the first elastic pieces 6 are fitted into the fitting recesses 11 on the inner surface of the adapter 2 by the relative rotation described above. Once each first elastic piece 6 is fitted into the fitting recess 11, the first elastic piece 6 is pressed against the inner surface of the fitting recess 11 due to elasticity, so that it cannot escape from the fitting recess 11. By this fitting, the adapter 2 becomes non-rotatable with respect to the holding device body 1.

  Thus, with the adapter 2 attached to the holding device main body 1, the protruding portion 5 covered with the sheath portion 8 is inserted into the center hole of the roll body, in this example, inside the paper tube 101B. Similar to the first elastic piece 6 described above, the second elastic piece 10 is once shrunk radially inward during insertion, and is pressed against the inner surface of the paper tube 101B by elasticity. Since the second elastic pieces 10 are distributed over the entire circumference of the sheath 8, the entire inner surface of the paper tube 101 </ b> B is held relatively evenly.

  2 and 7, only the paper tubes 101A and 101B are shown as roll bodies.

  Since the roll body held by the roll body holding device 15 rotates as the web material is fed or taken up, a rotational force is applied to the adapter 2. If the adapter 2 is rotated relative to the holding device main body 1 by this rotational force, the claw portion 9 is moved to the wide groove portion 7a of the long groove 7, and the engagement is released. May come off from the holding device main body 1. However, in this embodiment, since the first elastic piece 6 is fitted in the fitting recess 11, the adapter 2 cannot rotate relative to the holding device body 1 unless this fitting is released. The claw portion 9 does not move to the wide portion 7 a of the long groove 7. Therefore, even if a rotational force is applied to the adapter 2, there is no possibility that the adapter 2 is detached from the holding device body 1.

  Next, a method of removing the adapter 2 from the holding device body 1 when holding a roll body having a small center hole again will be described. In this embodiment, the release member 3 is used when the adapter 2 is removed.

  As described above, when the adapter 2 is attached to the holding device body 1 (first position) as shown in FIGS. 3 to 7, the first elastic piece 6 is fitted into the fitting recess 11. Since each first elastic piece 6 is elastically pressed against the inner surface of the fitting recess 11 and cannot escape, the adapter 2 cannot be rotated with respect to the holding device main body. Therefore, the claw portion 9 cannot be moved to the wide groove portion 7 a of the long groove 7, and the adapter 2 cannot be removed from the holding device body 1.

  Therefore, in this embodiment, as shown in FIGS. 8 and 9, the cylindrical portion 13 of the release member 3 is inserted from the opening at the tip of the sheath portion 8, and a gap between the outer periphery of the protruding portion 5 and the inner periphery of the sheath portion 8 is inserted. Insert into. At this time, the cylindrical portion 13 enters between the first elastic piece 6 and the fitting recess 11 while pushing the first elastic piece 6 further inward in the radial direction. As a result, the fitting between the first elastic piece 6 and the fitting recess 11 is released. In the present embodiment, since the raised portion of the first elastic piece 6 is formed in a shape that gradually increases along the insertion direction of the cylindrical portion, the cylindrical portion 13 can be obtained without applying a great force. It tends to shrink inward in the radial direction.

  The raised portion of the first elastic piece 6 is a relatively steep step portion in the circumferential direction and does not have a gently sloping shape. Therefore, the first elastic piece 6 is caused by a rotational force. It is difficult for the raised portion of this to climb over the fitting recess 11 in the lateral direction and escape. On the other hand, as described above, the raised portion of the first elastic piece 6 has a gentle slope along the insertion direction of the cylindrical portion. It is easy to escape from the joint recess 11.

  As described above, by inserting the cylindrical portion 13 of the release member 3, the fitting between the first elastic piece 6 and the fitting recess 11 is released, whereby the adapter 2 rotates with respect to the holding device body 1. It becomes possible. Therefore, the adapter 2 is rotated relatively to move the claw portion 9 from the first position to the second position, that is, from the state where the narrow groove 7 of the long groove 7 is engaged with the narrow groove portion 7b. Move to the wide part 7a. Therefore, the adapter 2 can be detached from the holding device main body 1 by pulling out the sheath portion 8 from the protruding portion 5. Thus, in this embodiment, in the state (1st position) in which the adapter 2 is mounted | worn with the holding | maintenance apparatus main body 1, it cannot rotate and cannot detach | leave. However, by using the release member 3, the fitting between the first elastic piece 6 and the fitting recess 11 can be easily released, thereby enabling the adapter 2 to rotate relative to the holding device body 1. Become. Then, by relatively rotating the adapter 2, the engagement of the claw portion 9 with the long groove 7 is released, and the adapter 2 can be easily pulled out from the holding device body 1 and easily removed.

  In the present embodiment, the holding device main body 1 can be mounted with one adapter 2 so that one roll body holding device 15 can handle two types of roll bodies having different inner diameters of paper tubes. Yes. Further, although not shown, a configuration may be adopted in which a plurality of adapters having different outer diameters of the sheath portion 8 can be selectively attached to the holding device body 1. Moreover, although not shown in figure, it is good also as a structure which can attach another adapter on the outer side of the above-mentioned adapter 2, and can pile up an adapter in multiple. According to these modifications, one roll body holding device 15 can correspond to three or more roll bodies having different inner diameters of the paper tubes.

  The example of holding the roll body in which the web material is wound around the paper tube has been described above. However, the roll body holding device 15 of the present invention does not have a paper tube and is configured only by the web body. Can also be held. In any case, the projecting portion 5 that is not covered with the sheath portion 8 or the sheath portion 8 is covered with the center hole of the roll body (when the paper tube is present, the inside of the paper tube becomes the center hole). The roll body can be held by selectively inserting the protruding portion 5 in the formed state.

  Next, an example of a recording apparatus that employs the roll body holding device 15 of the present embodiment will be described with reference to FIGS. This recording apparatus is an ink jet printer that performs recording on a recording medium 30 that is a web material made of paper or synthetic resin having a relatively wide width of about 0.5 m to 2 m, for example. The ink jet printer includes a recording unit 31 that records on the recording medium 30 and a transport unit 32 that transports the recording medium 30 recorded by the recording unit 31.

  The recording unit 31 includes a recording head 33 that ejects ink droplets onto the recording medium 30 and a head moving mechanism that scans the recording head 33 in the width direction orthogonal to the conveyance direction of the recording medium 30. The head moving mechanism includes a carriage 34 that holds the recording head 33, a guide rail (not shown) that guides the carriage 34 so as to be movable in the width direction of the recording medium 30, and drives the carriage 34 along the guide rail. Drive motor (not shown) and the like.

  The transport unit 32 includes, in order of the transport path of the recording medium 30, a supply unit 35 that supports a supply roll body 100 a that supplies the recording medium 30, and a front paper that guides the recording medium 30 that is carried into the recording head 33 side. A guide 36, a platen 37 that supports the recording medium 30 recorded by the recording head 33, a rear paper guide 38 that guides the recording medium 30 carried out from the recording head 33 side, and a recording medium recorded by the recording head 33 And a take-up portion 39 that supports the take-up roll body 100 b for taking up 30. In the present embodiment, the transport unit 32 itself does not have a delivery mechanism for transporting the recording medium 30, but simply with the rotation of a transport roller (not shown) provided near the recording head. As the recording medium 30 moves, both roll bodies 100a and 100b are supported so that they can rotate.

  The supply unit 35 and the take-up unit 39 respectively support the paper tube 101 of the roll bodies 100a and 100b formed by winding the recording medium 30 around the paper tube 101 from the inside. A roll body holding device 15 is provided. FIG. 10 schematically illustrates the roll body holding device 15. However, the supply unit 35 and the winding unit 39 are configured to support the support body 16 and the support body 16 that support the roll bodies 100 a and 100 b and the roll body holding device 15. A frame 14 is further provided.

  As shown in FIG. 11, the support structure 16 is disposed at a position facing both ends of the roll bodies 100 a and 100 b, and a rail-shaped guide member 17 (see FIG. 10) is provided between the support structures 16. , 12 are not shown). And the support frame 14 is arrange | positioned inside each support structure 16, respectively, and the roll body holding | maintenance apparatus 15 of this invention is attached to each support frame 14, respectively. Specifically, the flange portion 4 of the holding device main body 1 is fixed to each support frame 14. And at least one support frame 14 is in a predetermined range along the guide member 17 in order to adjust the distance between the two roll body holding devices 15 to the width of the roll body with the roll body holding device 15 attached. Can be moved within. One support frame 14 has a drive unit 14a for rotating the roll body.

  As shown in FIG. 11, the support structure 16 is provided with a holding portion 16 a that holds the adapter 2 removed from the holding device body 1. The holding portion 16a may have any configuration as long as the adapter 2 can be held. For example, an engagement groove (not shown) in which the claw portion 9 can be engaged may be formed. In FIG. 11, for the sake of convenience, in addition to the adapter 2 attached to the holding device main body 1, the adapter 2 held by the holding portion 16a is also illustrated. Only when it is removed from the apparatus main body 1, it is held by the holding portion 16a.

  In the present embodiment, a drive unit 14a that intermittently rotates the roll bodies 100a and 100b is provided as a feed-out mechanism that actively feeds the recording medium 30. However, the drive unit 14a is not provided, and the recording medium 30 is moved. Accordingly, the configuration may be such that both the roll bodies 100a and 100b are rotated together.

  According to this configuration, the recording medium 30 can be smoothly supplied and desired recording can be performed without skew by holding the supply roll body 100a firmly using the roll body holding device 15 of the present invention. it can. Further, the roll body holding device 15 of the present invention can firmly hold the winding roll body 100b, and the recording medium 30 can be smoothly wound. 11 and 12 show a state in which the adapter 2 is mounted on the holding device body 1 of the roll body holding device 15, but according to the present invention, the adapter 2 is mounted on the holding device body 1 as described above. By properly using the state in which the adapter 2 is not mounted, it is possible to securely hold a plurality of types of roll bodies having different inner diameters of the paper tubes.

  In the example shown in FIG. 10, both the supply roll body 100a and the take-up roll body 100b are held using the roll body holding device 15 of the present invention, but only one of them is held by the roll body of the present invention. It can also be set as the structure hold | maintained using the apparatus 15. FIG.

It is a disassembled perspective view which shows the roll body holding | maintenance apparatus of one Embodiment of this invention. It is sectional drawing which shows the holding | maintenance apparatus main body which is not mounting | wearing with the roll body holding | maintenance apparatus shown in FIG. It is a perspective view which shows the state which attached the adapter to the holding | maintenance apparatus main body of the roll body holding | maintenance apparatus shown in FIG. It is a side view which shows the state which attached the adapter to the holding | maintenance apparatus main body of the roll body holding | maintenance apparatus shown in FIG. It is a front view which shows the state which attached the adapter to the holding | maintenance apparatus main body of the roll body holding | maintenance apparatus shown in FIG. It is the sectional view on the AA line of FIG. It is sectional drawing which shows the state which attached the adapter to the holding | maintenance apparatus main body of the roll body holding | maintenance apparatus shown in FIG. It is a perspective view which shows the state which inserted the cancellation | release member of the roll body holding | maintenance apparatus shown in FIG. It is sectional drawing which shows the state which inserted the cancellation | release member of the roll body holding | maintenance apparatus shown in FIG. It is a front view which shows an example of the recording apparatus which employ | adopted the roll body holding | maintenance apparatus of this invention. It is a perspective view which shows the roll body holding | maintenance apparatus of the recording apparatus shown in FIG. 10, and the structure which supports it. It is a principal part enlarged view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Holding device main body 2 Adapter 3 Release member 4 Flange part 5 Projection part 6 1st elastic piece 7 Long groove (engaged part)
7a Wide groove width portion 7b Small groove width portion 8 Sheath portion 9 Claw portion (engagement portion)
DESCRIPTION OF SYMBOLS 10 2nd elastic piece 11 Fitting recessed part 12 Handle part 13 Cylindrical part 14 Support frame 14a Drive part 15 Roll body holding | maintenance apparatus 16 Support structure 16a Holding part 17 Guide member 30 Recording medium 31 Recording unit 32 Conveyance unit 33 Recording head 34 Carriage 35 Supply unit 36 Front paper guide 37 Platen 38 Rear paper guide 39 Winding unit 100a, 100b Roll bodies 101, 101A, 101B Paper tube

Claims (9)

Provided around the projecting portion of the flange portion, the flange portion disposed near the end of the roll body, a projecting portion projecting from the flange portion and insertable into the center hole of the roll body, and the flange portion A holding device main body including an engaged portion that is engaged, and a first elastic piece provided on an outer peripheral portion of the protruding portion,
A sheath portion having an outer shape larger than the outer shape of the projecting portion, an engaging portion provided around the sheath portion and engageable with the engaged portion; A roll body holding comprising: an adapter that is provided on an inner periphery of the sheath portion and includes a fitting recess into which the first elastic piece of the protruding portion can be fitted. apparatus.   In the adapter, the sheath portion is put on the protruding portion, the engaging portion is engaged with the engaged portion, and the first elastic piece of the protruding portion is fitted in the fitting recess. The roll body holding device according to claim 1, wherein the roll body holding device is attached to the main body of the holding device so as not to rotate.   The fitting of the first elastic piece into the fitting recess is a thin plate in the gap between the inner periphery of the sheath portion and the outer periphery of the protruding portion from the opening provided at the tip of the sheath portion. The roll body holding device according to claim 2, wherein the roll body holding device can be released by inserting the member.   The roll body holding device according to claim 3, wherein the thin plate-like member includes a cylindrical release member. The adapter has a second elastic piece provided on the outer periphery of the sheath portion,
The first elastic piece is inserted into the center hole of the roll body having a relatively small center hole when the protruding portion of the holding device body without the adapter is inserted. It is pressed against the inner surface from the inside,
The second elastic piece is inserted into the central hole of the roll body having a relatively large central hole, and the protruding portion of the holding device body, to which the adapter is attached, is covered with the sheath. And the roll body holding | maintenance apparatus of any one of Claims 1-4 which press-contacts from the inner side to the inner surface of this center hole. The roll body holding device according to any one of claims 1 to 5,
And a recording unit that performs recording on a recording medium fed from the roll body held by the roll body holding device. Using a holding device body having a projecting portion, and an adapter that has a larger outer shape than the outer shape of the projecting portion and has a sheath that can be put on the projecting portion, and is detachable from the holding device body,
When holding a roll body having a small-diameter center hole, the protrusion of the holding device main body is inserted into the center hole without mounting the adapter, and is provided on the outer periphery of the protrusion. Holding the roll body by pressing the first elastic piece from the inside to the inner surface of the central hole,
When holding a roll body having a large-diameter center hole, the adapter is attached to the holding device body, the sheath portion is inserted into the center hole, and provided on the outer peripheral portion of the sheath portion. The second elastic piece is pressed against the inner surface of the center hole from the inside to hold the roll body,
Roll body holding method.   The step of attaching the adapter to the holding device body includes covering the sheath portion with the protruding portion, engaging the engaging portion of the adapter with the engaged portion of the holding device body, The step of holding the adapter in a non-rotatable manner with respect to the holding device main body by fitting the first elastic piece into a fitting recess provided on an inner periphery of the sheath portion. The roll body holding method as described in 2. The step of removing the adapter from the holding device body includes:
A cylindrical release member is inserted into an annular gap between the sheath portion and the protruding portion from the opening at the tip of the sheath portion, and the release member is interposed between the first elastic piece and the fitting recess. Allowing the adapter to rotate relative to the holding device body by entering and releasing their fit;
Releasing the engagement of the engaging portion and the engaged portion by rotating the rotatable adapter relative to the holding device body;
Finally, the step of pulling the sheath part away from the protrusion part.

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