JP2012066904A - Printing paper winding core tube and holding device for the same - Google Patents

Abstract

[PROBLEMS] To wrap various kinds of strip-shaped printing paper such as labels, tags, or labels without backing paper in a roll shape and easily remove them together from a winding shaft 17, and to easily mount the printing paper on the winding shaft 17. A core tube and its holding device are provided.
Focusing on the fact that a printing paper take-up core tube 18 can be attached to and detached from a take-up shaft 17 in a reusable manner, it has a cylindrical shape and can be attached to and detached from a cantilever take-up shaft 17 The winding surface 22 is wound around the winding shaft 17, and extends in the axial direction of the winding shaft 17 from one opening end 23 </ b> A of the winding shaft 17. The central through-hole 23 through which the printing paper winding core tube 18 is detachably inserted and the locking piece 21 that can be raised and lowered provided at the free end 17A of the winding shaft 17 can be engaged and disengaged. It has a radial hole 24 located at the other opening end 23B and extending in the radial direction thereof.
[Selection] Figure 7

Description

    BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing paper winding core tube and a holding device thereof, and in particular, a printing paper winding core tube that is convenient for affixing or attaching work after winding work by winding a belt-like printing paper into a roll. And a holding device thereof.

Conventionally, for various types of printing paper such as labels, tags, or labels without mounts, as a pattern for printing issuance and winding work, for example, whether a printer that prints on printing paper is prepared near a product or other object to be attached Or, it may be carried around, and affixing may be performed immediately after printing is issued.
However, in this work pattern, the printer and the adherend must be in close proximity to each other, or in a fixed type or desktop type printer other than a portable printer, at a position far from the adherend. If it is placed, there is a problem that it takes time for the pasting work after the printing paper is issued.

Therefore, when using these fixed type or desktop type printers, the necessary number of printing papers are printed and issued together, and a plurality of printing papers are wound around a winding core tube in a roll shape. Above, this roll-shaped printing paper is carried to a pasting work place and pasted one by one.
The take-up core tube is generally composed of a paper tube, which is set by being fitted to the take-up shaft of the take-up machine so as not to idle. The downstream end of the belt-like print paper is placed in the take-up core tube. The part is fixed, and the printing paper to be printed is rolled up.
After the winding operation, the roll-shaped printing paper is removed together with the winding core tube from the winding shaft, and the sheets are pasted one by one on a product or other adherend at the pasting place.
However, in this work pattern, it is necessary to prepare the winding core tube by firmly fitting it into the winding shaft of the winding machine every time the winding operation is performed. There is a problem that it takes time and labor other than the work of pulling out the winding core tube together with the printing paper.
In addition, the winding core tube is often disposable, and there is a problem from the viewpoint of resource saving.

    Furthermore, in the winding operation, it is troublesome to attach the belt-shaped printing paper to the winding core tube with the center line aligned with each other. If the center line is not properly aligned and attached, the printing paper will meander. There is also a problem that the paper may be wound up and wrinkles may occur on the printing paper or the pasting operation may be hindered.

JP 2003-252501 A

    The present invention has been considered in view of the above problems, and provides a printing paper winding core tube capable of winding various belt-like printing paper such as a label, a tag, or a label without a mount into a roll, and a holding device therefor. The task is to do.

    In addition, the present invention provides a printing paper winding core tube and a holding device for the printing paper which can be easily detached from the winding shaft together with the printing paper wound in a roll shape and can be easily mounted on the winding shaft. This is the issue.

    Another object of the present invention is to provide a printing paper winding core tube and its holding device that can be reused by removing the printing paper wound in a roll form together with the winding core tube from the winding shaft.

    The present invention also provides a printing paper winding core tube that can be easily inserted into and removed from the winding shaft, and can be easily switched between an integrally rotatable state with the winding shaft and a detachable state from the winding shaft. It is an object to provide the holding device.

    Further, the present invention provides a printing paper winding core tube that can be appropriately wound up in a roll shape by easily aligning the center lines of the printing paper and the core tube when the belt-shaped printing paper is attached. It is an object to provide the holding device.

    That is, the present invention focuses on making the printing paper winding core tube detachable with respect to the winding shaft, and the first invention is for winding the belt-shaped printing paper in a roll shape. The printing paper winding core tube has a cylindrical shape, is detachably attached to a cantilever winding shaft, and is rotatable with the winding shaft. A winding surface around which the printing paper is wound, and a central penetration extending in the axial direction of the winding shaft and detachably passing through the printing paper winding core tube from one opening end of the winding shaft. And a radial hole extending in the radial direction at the other opening end of the central through-hole, wherein the undulating lock piece provided at the free end of the winding shaft is detachable. A winding core for printing paper, It is.

    The winding surface extends in the width direction of the printing paper with the center position of each protrusion aligned with the center position of the main body in the length direction of the printing paper winding core tube, and the length thereof is slightly different. A plurality of width setting ridges parallel to each other can be formed to protrude.

    The width set ridges can be formed by forming at least two of the plurality of ridge groups having slightly different lengths in the circumferential direction of the winding surface.

    When the print paper is a general label (label with mount) or a tag other than the label without mount, a paper end attachment that can fix the downstream end of the print paper to the winding surface is attached and detached. Can be possible. When the printing paper is a label without a mount, it is not necessary to use a paper edge fitting.

    A second invention is a holding device for a printing paper winding core tube for winding a belt-like printing paper in a roll shape, and a winding shaft attached in a cantilever manner to the paper winding portion of the printing paper; A lockable piece that can be raised and lowered provided at a free end of the winding shaft, and the lock piece can be raised and lowered in the radial direction of the winding shaft and the axial direction of the winding shaft, respectively. The printing paper winding core tube has a cylindrical shape and can be rotated by driving the winding shaft. The winding surface of the printing paper is wound around the winding surface, and the winding shaft extends in the axial direction of the winding shaft. A central through hole through which the printing paper take-up core tube is detachably inserted from one opening end, and the lock piece can be engaged and disengaged, and at the other opening end of the central through hole And extend in the radial direction of the printing paper winding core tube. A printing paper winding shaft, wherein the winding shaft is detachably attached to the printing paper winding core tube and is rotatable together with the printing paper winding core tube. A holding device for a core tube.

    The lock piece engages with the radial hole of the print paper take-up core tube so that the print paper take-up core tube can rotate integrally with the take-up shaft, and the lock piece becomes the print paper take-up core. The printing paper winding core tube can be attached to and detached from the winding shaft, positioned parallel to the central through hole of the tube.

    In the radial hole of the printing paper winding core tube, a pressing wall portion capable of rotating the lock piece from the radial direction of the winding shaft in the axial direction can be formed.

    An engagement wall that engages with a shoulder portion of the take-up shaft in the central through hole of the print paper take-up core tube and can position the print paper take-up core tube with respect to the take-up shaft. The part can be formed.

    A hoisting biasing member that makes it possible to temporarily hold the lock piece in an upright state in the radial direction of the take-up shaft, and to make it possible to temporarily hold the lock piece in a prone state in the axial direction of the take-up shaft, It can be provided between the winding shaft and the lock piece.

In the printing paper winding core tube and its holding device according to the present invention, the cylindrical printing paper winding core tube extends in the axial direction of the winding shaft, and the printing paper winding core tube extends from one opening end to the winding shaft. The central through-hole through which the core tube is detachably inserted and the undulating lock piece provided at the free end of the take-up shaft can be engaged and disengaged and printed at the other opening end of the central through-hole. A radial hole extending in the radial direction of the paper take-up core tube, which is detachably attached to the take-up shaft so that it can be rotated together with the take-up shaft. In addition, it is possible to easily switch between an integrally rotatable state with the winding shaft and a detachable state from the winding shaft.
Therefore, it is not necessary to press-in or pull out the paper tube from the conventional way into the winding shaft, and the printing paper winding core tube can be reused repeatedly, which can be expected to save costs and save resources. it can. In addition, since a plurality of print sheets can be wound up in a roll shape with an easy and simple operation, the installation location of the printer that prints on the print sheets can be freely selected.

    In particular, according to the printing paper winding core tube of the first invention, since the printing paper winding core tube has a central through hole and a radial hole, the winding shaft is inserted into the central through hole and locked to the radial hole. If the pieces are engaged, the printing paper winding core tube and the winding shaft can be integrally rotated and the belt-like printing paper can be wound up in a roll shape.

    In particular, according to the holding device for the printing paper winding core tube of the second invention, the lock piece can be raised and lowered with respect to the winding shaft. Can be easily switched between a configuration in which the winding shaft is integrally rotated with respect to the winding shaft and a configuration in which the printing paper winding core tube is removable from the winding shaft. .

1 is a side view of a printer 1 and a printing paper winder 2 including a printing paper winding core tube 18 and a holding device 20 according to an embodiment of the present invention. FIG. 2 is a plan view of the printer 1 and the printing paper winder 2. FIG. 2 is a front view of the printing paper winder 2 as viewed from the printer 1 side. FIG. 2 is a perspective view of the printing paper winder 2. FIG. FIG. 5 is a side view of the printing paper take-up core tube 18 as viewed in the direction of the winder body 9 in FIG. 4 in the axial direction thereof. FIG. 3 is a development view of the winding surface 22 (the arrow in the drawing is the downstream side in the transport direction of the label 3 without mount). FIG. 7A is a cross-sectional view of the main part of the winding shaft 17 and the printing paper winding core tube 18, and FIG. 7A is a main portion in a state where the printing paper winding core tube 18 is inserted and fixed to the winding shaft 17. FIG. 7B is a cross-sectional view of the state where the printing paper winding core tube 18 is pulled out from the winding shaft 17. FIG. 4 is a cross-sectional explanatory view showing a mounting structure of the lock piece 21 at the free end portion 17A of the winding shaft 17.

    In the present invention, since the printing paper winding core tube can be easily rotated and detached integrally with the winding shaft, the roll-shaped printing paper can be easily removed from the winding shaft together with the printing paper winding core tube. Thus, a printing paper winding core tube capable of performing the pasting operation and its holding device have been realized.

Next, the printing paper winding core tube 18 and its holding device 20 according to the embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a side view of a printer 1 and a printing paper winder 2 provided with a printing paper winding core tube 18 and a holding device 20 thereof, and FIG. 2 is a plan view of the printer 1 and the printing paper winder 2. is there.
The printer 1 is loaded with printing paper, for example, a label 3 without mount, and prints necessary information by an arbitrary method. The printer 1 is electrically connected to the printing paper winder 2 by a cable 4 and The timing of the printing issue and the winding operation by the printing paper winder 2 can be appropriately controlled.
As shown in FIG. 1 with a part thereof enlarged, the non-mounting label 3 has, for example, a release agent layer 6 on the surface of a label base material 5 coated with a thermosensitive coloring material, and an adhesive for pasting on the back surface thereof. This is a resource-saving printing paper having a configuration that includes the layer 7 but does not include a base sheet temporarily attached to the back surface thereof.

    3 is a front view of the printing paper winder 2 as viewed from the printer 1 side, and FIG. 4 is a perspective view of the printing paper winder 2. The printing paper winder 2 is wound around the base 8. The take-up machine main body 9 is erected, and the winder main body 9 is provided with a paper guide unit 10 and a paper take-up unit 11 in a cantilever manner, and a paper tension adjusting unit is provided between the paper guide unit 10 and the paper take-up unit 11. 12 is attached.

    The winder main body 9 has a power switch 13 and a drive motor 14, and the drive motor 14 is rotationally driven by turning on the power switch 13.

The paper guide unit 10 has a guide roller 16 fixed to the guide shaft 15, and the guide roller 16 rotates freely with respect to the winder main body 9, and the paperless label 3 printed and issued from the printer 1. The back side can be guided and transferred to the paper tension adjusting unit 12.
Since the guide roller 16 contacts the adhesive layer 7 on the back side of the non-mounting label 3, the guide roller 16 is generally made of plastic, like a printing paper winding core tube 18 of the paper winding unit 11 described later. It is desirable to have peelability for the adhesive.

The paper winding unit 11 includes a cantilevered winding shaft 17 (FIGS. 3 and 7), a printing paper winding core tube 18 that can be attached to and detached from the winding shaft 17, and the printing paper winding core tube. 18 is provided with a detachable paper end attachment 19, and a holding device 20 for the print paper winding core tube 18 is provided on the winding shaft 17.
The take-up shaft 17 is intermittently rotated by a drive motor 14 in accordance with the printing amount of the non-mounting label 3 by the printer 1, and the print paper take-up core tube 18 is intermittently driven to rotate.
A lock piece 21 (described later in FIGS. 7 and 8) that can be raised and lowered in the radial direction of the winding shaft 17 and the axial direction of the winding shaft 17 is attached to the free end portion 17A of the winding shaft 17.

The printing paper winding core tube 18 is for winding the strip-shaped non-mounting label 3 in a roll shape, has a cylindrical shape, is detachably attached to the winding shaft 17, and is driven by the driving of the winding shaft 17. It can rotate together with the winding shaft 17.
5 is a side view of the printing paper winding core tube 18 as viewed in the axial direction of the printing paper winding core tube 18 in the direction of the winder body 9 in FIG. 4. The printing paper winding core tube 18 winds the label 3 without the mount. It has a winding surface 22 that is a circumferential surface, a central through hole 23 that passes through the axial direction, and a radial hole 24 that communicates with the central through hole 23.

The central through hole 23 extends in the axial direction of the take-up shaft 17, and the print paper take-up core tube 18 can be removably inserted into the take-up shaft 17 from one open end 23 </ b> A (FIG. 7).
The radial hole 24 is located at the other opening end 23B (FIG. 7) of the central through hole 23 and extends in the radial direction of the printing paper winding core tube 18, and is formed in the free end 17A of the winding shaft 17. The provided rocking piece 21 that can be raised and lowered can be engaged and disengaged.

    The paper end attachment 19 is a substantially U-shaped metal wire rod that is long in the axial direction and is attached to and detached from a mounting groove 25 formed in a pair in the axial direction of the outer peripheral surface of the printing paper winding core tube 18. When a print sheet such as a general label with a mount other than 3 or a tag without an adhesive layer is wound around the print sheet take-up core tube 18, its downstream end is connected to the mounting groove 25. It can be fixed to the winding surface 22 by being sandwiched between them.

FIG. 6 is a development view of the winding surface 22 (in the drawing, the arrow is on the downstream side in the transport direction of the label 3 without mount), and the main body in the length direction of the printing paper winding core tube 18 is disposed on the winding surface 22. A plurality of parallel width setting ridges 26 extending in the width direction of the non-mounting label 3 and slightly different in length are formed by aligning each ridge center position 26A with the center position 18A.
The width setting ridge 26 protrudes in the outer peripheral diameter direction of the printing paper winding core tube 18 to reduce the contact area of the non-mounting label 3 with the adhesive layer 7 as much as possible. The strength applied to the surface 22 is reduced to a predetermined level.
However, as shown in FIG. 6, several sets of width set ridges 26 each having a slightly different length are formed in the circumferential direction (at least two sets, in the example in the figure, four sets) in the circumferential direction. Regardless of the relative position of the printing paper winding core tube 18 and the label 3 without mount, the width of the label 3 without mount is adjusted to be bonded to the winding surface 22 at an arbitrary position on the peripheral surface of the winding surface 22. To be able to.
In addition to the width setting ridges 26 extending in the axial direction, a plurality of auxiliary ridges 27 that are orthogonal to the width setting ridges 26 (extending in the outer circumferential direction of the printing paper winding core tube 18) and parallel to each other are formed. Thus, it is possible to further reduce the adhesive strength of the non-mounting label 3 to the winding surface 22.
Further, a ridge pattern similar to that of the width setting ridge 26 and the auxiliary ridge 27 is formed on the outer peripheral surface of the guide roller 16 of the sheet guide portion 10, and the contact resistance with the non-mounting label 3 is reduced.

FIG. 7 is a cross-sectional view of the main parts of the winding shaft 17 and the printing paper winding core tube 18. FIG. 7 (1) shows a state in which the printing paper winding core tube 18 is inserted and fixed to the winding shaft 17. 7 is a cross-sectional view of the main part, FIG. 7B is a cross-sectional view of the state where the printing paper winding core tube 18 is pulled out from the winding shaft 17, and FIG. 8 is an illustration of attaching the lock piece 21 at the free end 17 A of the winding shaft 17. It is sectional explanatory drawing which shows a structure.
In particular, as shown in FIG. 8, the lock piece 21 undulates around the undulation shaft 28 provided at the free end 17 </ b> A of the take-up shaft 17 in the radial direction of the take-up shaft 17 and the axial direction of the take-up shaft 17. Is possible.
That is, the lock piece 21 is formed with a prone engagement groove 29 and a standing engagement groove 30 at an angular interval of 90 degrees in the circumferential direction at the base, and between the winding shaft 17 and the lock piece 21. The undulation urging member (engagement steel ball 31, urging spring 32) is provided.
The engagement steel ball 31 is selectively engaged with the prong engagement groove 29 or the standing engagement groove 30 while being urged by the urging spring 32, so that the lock piece 21 is moved in the radial direction of the winding shaft 17. The lock piece 21 can be temporarily held in the standing state and can be temporarily held in the prone state in the axial direction of the winding shaft 17.

As shown in FIG. 7, the lock piece 21 engages with the radial hole 24 of the printing paper winding core tube 18, so that the printing paper winding core tube 18 can rotate integrally with the winding shaft 17. Is positioned parallel to the central through hole 23 of the printing paper winding core tube 18, and the printing paper winding core tube 18 can be attached to and detached from the winding shaft 17.
However, in the printing paper winding core tube 18, the locking piece 21 is rotated from the radial direction of the winding shaft 17 in the axial direction so as to face the locking piece 21 on the inner wall surface located at the back of the radial hole 24. The pressing wall portion 33 that can be made to protrude is formed.

    The printing paper winding core tube 18 is engaged with the shoulder portion 17B of the winding shaft 17 on the inner wall surface near the other opening end 23B of the central through-hole 23 to An engaging wall portion 34 that can be positioned with respect to the winding shaft 17 is formed to project.

    The holding device 20 for the printing paper winding core tube 18 according to the present invention includes a winding shaft 17 and a lock piece 21 as described above, an undulating biasing member such as an engagement steel ball 31 and a biasing spring 32, and a pressing force. This is comprised from the wall part 33, the engagement wall part 34, etc. FIG.

    As shown in FIGS. 1 to 4, the sheet tension adjusting unit 12 includes a swing shaft 35 fixed to the base 8 and the winder main body 9 and a swing shaft attached to the swing shaft 35 so as to be swingable. Each of the racks 36 includes a frame 36, a pinion 37 provided at the center of the swing frame 36 on the paper guide portion 10 side, and a pair of racks 38 that engage with the pinion 37 on the upstream side and the downstream side. A width regulating piece 39 (FIG. 3) is attached to the lower part of the plate.

    Therefore, by rotating the pinion 37, the pair of racks 38, that is, the width restricting pieces 39 can be adjusted in the width direction of the non-mounting label 3, and the non-mounting label 3 transferred from the paper guide unit 10 is adjusted in width. It is possible to regulate by direction.

Note that the swinging posture (swinging angle) of the swing frame 36 with respect to the winder body 9 is detected by an arbitrary method, and the printing paper winder 2 with respect to the printing issuance speed of the non-mounting label 3 by the printer. The winding speed of the label 3 without mount is adjusted so that excessive tension is not applied to the label 3 without mount.
That is, when the swing frame 36 reaches the maximum standing state, this posture is detected, the drive motor 14 of the winder body 9 is stopped, and the winding operation of the non-mounting label 3 in the paper winding unit 11 is performed. The oscillating frame 36 is stopped when the label 3 without the mount extends between the sheet guide portion 10 and the sheet take-up portion 11 due to printing and issuing the label 3 without the mount from the printer 1 during the stop period. By swinging downward around the swinging shaft 35 due to its own weight and when it reaches its minimum prone state, this posture is detected and rotational driving of the drive motor 14 is resumed, and the mount in the paper winding unit 11 The winding operation of the none label 3 is resumed.

    In the printer 1 and the printing paper winder 2 having such a configuration, as shown in FIG. 7A in particular, for example, when the lock piece 21 remains standing, the lock piece 21 extends along the radial hole 24. The printing paper winding core tube 18 can be inserted into the winding shaft 17 so as to engage with each other. Alternatively, when the lock piece 21 is in the prone state, the printing paper take-up core tube 18 is inserted into the take-up shaft 17 as it is, and the lock piece 21 in the prone state is against the urging force of the urging spring 32 in the radial direction. Stand up to engage in hole 24. In either case, the printing paper winding core tube 18 and the winding shaft 17 can be integrally rotated.

The label 3 without the mount from the printer 1 is guided to the upper surface of the guide roller 16 of the paper guide unit 10, and the rack 38, that is, the width control piece 39 is adjusted by the pinion 37 in the paper tension adjusting unit 12 to control the width of the label 3 without the mount. It passes between the pieces 39 and is attached to the winding surface 22 of the printing paper winding core tube 18 in the paper winding unit 11.
If the width of the label 3 without mount is matched with the width setting protrusion 26 of the winding surface 22 during this sticking operation, the label 3 without mount is attached to the winding surface 22 at right angles along the transfer direction. Thus, the meandering of the non-mounting label 3 accompanying the winding operation can be prevented.

    The power switch 13 of the printing paper winder 2 is turned on to start the winding operation of the non-mounting label 3, and the tension by the paper tension adjusting unit 12 is applied according to the printing issue length of the non-mounting label 3 from the printer 1. While adjusting, the non-mounting label 3 is wound around the printing paper winding core tube 18 of the paper winding unit 11 in a roll shape.

After the operation of winding the non-mounting label 3 on the printing paper winding core tube 18 is completed, the non-mounting label 3 together with the printing paper winding core tube 18 can be pulled out from the winding shaft 17.
Specifically, as shown in FIG. 7 (2), when the non-mounting label 3 together with the printing paper winding core tube 18 is pulled out of the winding shaft 17, the pressing wall 33 of the printing paper winding core tube 18 is energized. Since the lock piece 21 is shifted to the prone state against the urging force of the spring 32 for printing, the printing paper winding core tube 18 and the mountless label 3 can be easily detached from the paper winding portion 11 as they are.

    The non-mounting label 3 wound in the form of a roll on the printing paper winding core tube 18 can be attached to a necessary adherend, and when the non-mounting label 3 is attached, the printing paper winding core tube 18 is again connected. The next winding operation can be started by inserting the lock piece 21 in the radial hole 24 by being inserted into the winding shaft 17.

Thus, by using the printing paper winding core tube 18 instead of the conventional paper tube, which is troublesome to attach and detach to the winding shaft 17, after the winding operation of the non-mounting label 3 in the paper winding unit 11 is completed. The pulling-out operation can be simplified.

1 Printer (Figs. 1 and 2)
2. Printing paper winding machine provided with printing paper winding core tube 18 and its holding device 20 (FIGS. 1 to 4)
3 Label without mount (printing paper)
4 Cable 5 Label Base 6 Release Agent Layer 7 Adhesive Layer 8 Base 9 Winder Main Body 10 Paper Guide Unit 11 Paper Winding Unit 12 Paper Tension Adjusting Unit 13 Power Switch 14 Drive Motor 15 Guide Shaft 16 Guide Roller 17 Winding Take-up shaft 17A Free end of take-up shaft 17 (FIG. 8)
17B The shoulder of the winding shaft 17 (FIG. 7)
18 Printing paper winding core tube (Example, FIGS. 4 to 7)
18A Center position of main body of printing paper winding core tube 18 (FIG. 6)
19 Paper end fitting 20 Holding device for printing paper winding core tube 18 (Example, FIGS. 4 to 8)
21 Lock piece 22 Winding surface 23 of printing paper winding core tube 18 Central through hole 23A of printing paper winding core tube 18 One open end 23B of central through hole 23 The other opening end 24 of central through hole 23 Radial hole 25 of printing paper take-up core tube 18 Mounting groove 26 of printing paper take-up core tube 18 Width set protrusion 26A on winding surface Center position of protrusion of width set protrusion 26 (FIG. 6)
27 Auxiliary ridge 28 Undulating shaft (Fig. 8)
29 Protrusion engagement groove 30 Standing engagement groove 31 Engagement steel ball (relief bias member)
32 Spring for urging (undulation urging member)
33 Pressing wall portion of the printing paper winding core tube 18 (FIG. 7)
34. Engagement wall portion in printing paper winding core tube 18 (FIG. 7)
35 Oscillating shaft 36 Oscillating frame 37 Pinion 38 A pair of racks 39 Width restricting pieces

Claims (9)

A printing paper winding core tube for winding a belt-shaped printing paper into a roll,
The printing paper take-up core tube has a cylindrical shape, is detachably attached to a cantilever type take-up shaft, and can rotate with the take-up shaft.
A winding surface around which the printing paper is wound;
A central through-hole extending in the axial direction of the take-up shaft and detachably passing through the printing paper take-up core tube from one opening end of the take-up shaft;
A undulating lock piece provided at the free end of the winding shaft is detachable, and a radial hole located in the other opening end of the central through hole and extending in the radial direction thereof,
A printing paper winding core tube, characterized by comprising: On the winding surface,
A plurality of parallel widths that extend in the width direction of the printing paper and have slightly different lengths by aligning the center position of the ridge with the center position of the main body in the length direction of the printing paper winding core tube 2. The printing paper winding core tube according to claim 1, wherein the set protrusion is formed to protrude. 3. The printing paper according to claim 2, wherein the width setting ridge is formed with at least two or more of the plurality of ridges having slightly different lengths in the circumferential direction of the winding surface. Winding core tube. The printing paper winding core tube according to any one of claims 1 to 3, wherein a paper end fitting that can fix a downstream end portion of the printing paper to the winding surface is detachable. A printing paper winding core tube holding device for winding a belt-shaped printing paper into a roll,
A take-up shaft attached to the paper take-up portion of the printing paper in a cantilever manner;
A rockable lock piece provided at the free end of the winding shaft;
Have
The lock pieces can be raised and lowered in the radial direction of the winding shaft and in the axial direction of the winding shaft,
The printing paper winding core tube is
It has a cylindrical shape and can be rotated by driving the winding shaft,
A winding surface around which the printing paper is wound;
A central through hole extending in the axial direction of the take-up shaft and detachably passing through the printing paper take-up core tube from one opening end of the take-up shaft;
The lock piece is detachable and has a radial hole located at the other opening end of the central through hole and extending in the radial direction of the printing paper winding core tube,
An apparatus for holding a printing paper winding core tube, wherein the winding shaft is detachably attached to the printing paper winding core tube and is rotatable together with the printing paper winding core tube. The lock piece engages with the radial hole of the printing paper winding core tube, and the printing paper winding core tube can rotate integrally with the winding shaft;
6. The lock piece is positioned in parallel with the central through hole of the printing paper winding core tube, and the printing paper winding core tube is detachable from the winding shaft. The holding apparatus of the printing paper winding core tube of description. In the radial hole of the printing paper winding core tube,
The printing paper winding core tube according to claim 5 or 6, wherein a pressing wall portion capable of rotating the lock piece in the axial direction from the radial direction of the winding shaft is formed. Holding device. In the central through hole of the printing paper winding core tube,
6. An engagement wall portion that engages with a shoulder portion of the take-up shaft to position the print paper take-up core tube with respect to the take-up shaft is formed. 8. The holding device for a printing paper take-up core tube according to any one of 7 above. A raising and lowering biasing member capable of temporarily holding the lock piece in an upright state in the radial direction of the winding shaft and temporarily holding the lock piece in a prone state in the axial direction of the winding shaft, The printing paper winding core tube holding device according to any one of claims 5 to 8, wherein the holding device is provided between the winding shaft and the lock piece.

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