JP5499242B2 - Roll sheet attachment - Google Patents

Description

  The present invention relates to a roll sheet mounting tool for mounting a roll-shaped sheet material (hereinafter referred to as a roll sheet) on a substantially cylindrical core tube, and particularly to a plurality of core tubes having different outer diameters. It is related with the roll sheet mounting tool which can be used in common.

  In order to continuously supply the sheet material to various devices, a method of attaching a roll sheet to the outer periphery of the core tube attached to the device and rotating the core tube to send the sheet material to the device side is a method. Convenient. Usually, since the outer diameter of a core pipe changes with apparatuses, conventionally, the sheet | seat material was directly wound around the core pipe. However, such a method has a problem in that the work efficiency is poor and the cost for mounting the roll sheet on the core tube increases. Therefore, in recent years, a technique for efficiently attaching a roll sheet to a core tube has attracted attention, and various researches and developments have been conducted. In connection with this, several inventions and devices have already been disclosed.

For example, in Patent Document 1, it is possible to stably support the raw material wound around the outer periphery of various cores having different inner diameters under the name “support device and label sticking device”. An invention relating to a simple support device and a label sticking device using the same is disclosed.
The invention disclosed in Patent Document 1 is a support device that rotatably supports an original fabric in which a belt-like sheet is wound in a roll shape around the outer periphery of a winding core. A slit extends in the axial direction from both ends. The inner peripheral surface of the core is pressed against the cylindrical body installed between the core and the core by means of both ends deformed by screwing in a tapered spacer.
In the support device having such a structure, the displacement amount in the radial direction of the end portion of the cylindrical body is adjusted by changing the moving distance of the spacer and the mutual distance. When the slits are formed at substantially equal intervals along the circumferential direction of the core, a force substantially equal to the circumferential direction acts on the inner peripheral surface of the core. Therefore, the winding core is stably supported.

Further, although it is not an invention relating to a technique for attaching a roll sheet to a core tube, Patent Document 2 discloses that the outer diameter of the core is different under the name of “film winding device and roll shaft intermediate chuck member used in the device”. An invention relating to a roll shaft intermediate chuck member commonly applied to a plurality of rolls is disclosed.
A roll shaft intermediate chuck member according to the invention disclosed in Patent Document 2 is disposed between a roller and a bearing member that supports a film winding roll, and is formed on a flange formed on one side surface of a cylindrical shaft base. , An engaging portion to the bearing member is provided, and a flange formed on the other side surface is provided with annular convex portions that respectively engage with two types of cores having different diameters of the film winding roll. ing.
According to such a structure, in the replacement work of the film-shaped metal foil original fabric roll, even if the outer diameter dimension of the roll core changes, it is possible to cope with one roll shaft intermediate chuck member. Is no longer necessary.

JP 2008-207925 A JP-A-10-29743

  The support device according to the invention disclosed in Patent Document 1 as the above-described prior art includes a winding core, a cylindrical body, and a spacer, and since there are many members, the manufacturing cost may be increased. Moreover, since the space which installs a spacer in the edge part of a cylindrical body is needed, there existed a subject that an application location was restrict | limited.

  Further, in the invention disclosed in Patent Document 2, it is necessary to form an annular protrusion on the flange formed on the side surface of the cylindrical shaft-shaped substrate by the number of rolls having different core outer diameters. There is a problem that the structure of the chuck member becomes complicated and the manufacturing cost increases. Moreover, when the structure of the present invention that holds the roll at one end is applied to the roll sheet mounting means, the roll sheet may not be stably mounted on the core tube.

  The present invention has been made in response to such a conventional situation, and an object thereof is to provide an inexpensive roll sheet mounting tool that can be used in common for a plurality of core tubes having different outer diameters.

In order to achieve the above object, the roll sheet mounting tool according to the first aspect of the present invention is a cylindrical body in which a roll sheet is wound on a side surface and a core tube is inserted into the inside from circular openings provided at both ends. A plurality of pressing pieces made of an elastic material installed inside along the central axis is connected to the inner periphery of the cylindrical body and gradually approaches the central axis from the base toward the distal end. And the shortest distance to the central axis is formed to be shorter than the radius of the core tube, and the pressing piece is a side surface leaving a base according to a U-shaped notch provided on the side surface of the cylindrical body. detached from, is formed by bending radially inwardly of the cylindrical body is characterized in Rukoto.
In the roll sheet wearing tool having such a structure, the core tube is changed in the outer diameter from the pressing piece deformed so that the tip portion approaches the inner periphery of the side surface by the core tube inserted into the cylindrical body. Regardless, it has the effect of receiving a force directed radially inward of the cylindrical body. In addition, the pressing piece can be easily manufactured.

According to a second aspect of the invention, the roll sheet attachment according to claim 1, the pressing piece bent radially outwardly of the cylindrical body in a bent portion provided in the vicinity of the tip portion, the tip portion from the bent portion Instead of being formed so as to be asymptotic to the central axis, it is formed so as to be asymptotic to the inner periphery of the cylindrical body.
In the roll sheet wearing tool having such a structure, there is no possibility that the front end portion of the pressing piece interferes with the front surface of the core tube inserted from the front end portion side.

The invention according to claim 3 is the roll sheet wearing tool according to claim 1 or 2, wherein a plurality of pressing pieces having different lengths are installed on the inner periphery of the cylindrical body. is there.
The roll sheet wearing tool having such a structure has an effect that the core tube inserted into the cylindrical body is respectively held by the pressing pieces at a plurality of axial positions.

According to a fourth aspect of the invention, the roll sheet attachment according to claim 1, as the pressing piece, to the inner periphery of the cylindrical body so that the first pressing piece and the second pressing piece are opposite to each other At least one of the first pressing piece and the second pressing piece is bent outward in the radial direction of the cylindrical body at a bent portion provided in the vicinity of the tip portion, and extends from the bent portion toward the tip portion. In this case, instead of being formed so as to be asymptotic to the central axis, it is formed so as to be asymptotic to the inner periphery of the cylindrical body.
In the roll sheet mounting tool having such a structure, when the first pressing piece and the second pressing piece are formed up to the vicinity of both ends of the core tube, the core tube inserted into the inside of the cylindrical body has both ends. It has the effect of being held in the vicinity.

According to the roll sheet mounting tool of the first aspect of the present invention, even when the outer diameters of the plurality of core tubes are different from each other, the roll sheet can be securely mounted. Further, the manufacturing cost can be reduced.

According to the roll sheet mounting tool of the second aspect of the present invention, the core tube can be inserted into the cylindrical body from either opening side.

According to the roll sheet mounting tool of the third aspect of the present invention, the mounting state can be stabilized even when a wide roll sheet is mounted on a long core tube.

According to the roll sheet mounting tool of claim 4 of the present invention, even a wide roll sheet can be stably mounted on the core tube.

(A) And (b) is the front view and side view of Example 1 of the roll sheet mounting tool which concern on embodiment of this invention, respectively. (A) thru | or (c) are AA arrow directional cross-sectional views of Fig.1 (a). (A) thru | or (c) is a figure which shows the modification of the roll sheet mounting tool of Example 1. FIG. (A) And (b) is the front view and side view of Example 2 of the roll sheet mounting tool which concern on embodiment of this invention, respectively. (A) And (b) is a BB arrow directional cross-sectional view of Fig.4 (a), (c) is CC sectional view taken on the line of Fig.4 (a). (A) And (b) is the front view and side view of Example 3 of the roll sheet mounting tool which concern on embodiment of this invention, respectively. (A) And (b) is DD sectional view taken on the line of FIG. 6 (a), (c) is EE sectional view taken on the line of FIG. 6 (a).

The roll sheet mounting tool of the present invention is mounted as a roll sheet instead of directly winding a sheet material around a core tube that is rotationally driven by the device, and the core tube that is inseparably attached to the device or The present invention can be applied to any core tube that is detachably attached.
Hereinafter, examples of the roll sheet mounting tool according to the embodiment of the present invention will be described with reference to FIGS.

The structure of the roll sheet mounting tool of Example 1 will be described with reference to FIGS. 1 to 3 (particularly, corresponding to claims 1 to 2 ).
1 (a) and 1 (b) are respectively a front view and a side view of Example 1 of the roll sheet mounting tool according to the embodiment of the present invention, and FIGS. 2 (a) to 2 (c) are shown. It is AA arrow sectional drawing of Fig.1 (a). 3 (a) to 3 (c) are diagrams showing modifications of the roll sheet mounting tool of Example 1, and each corresponds to FIG. 2 (a). Since the roll sheet is not a component of the present invention, the roll sheet is illustrated by broken lines in FIG. Moreover, in FIG.2 (b) and FIG.3 (b), some illustrations are abbreviate | omitted among several press pieces.

As shown in FIGS. 1 and 2, the roll sheet mounting tool of this embodiment is a cylindrical body 1 a provided with circular openings 4 a and 4 b at both ends, and the roll sheet 6 is wound around the outer periphery of the side surface 2. In this state, it is extrapolated to the core tube 7. On the inner periphery of the side surface 2, a plurality of pressing pieces 5 extend along the central axis 8 from the vicinity of the opening 4 a toward the vicinity of the opening 4 b.
Further, the pressing pieces 5 are provided at substantially equal intervals with respect to the circumferential direction of the side surface 2 so as to gradually approach the central axis 8 from the base portion 5b toward the distal end portion 5a. The pressing piece 5 is formed by providing a U-shaped cut portion on the side surface 2 of the cylindrical body 1a, and then bending the portion surrounded on three sides by the cut portion to the inner side in the radial direction of the cylindrical body 1a. Is formed. Accordingly, the portion surrounded by the cut portion becomes an opening (hereinafter referred to as a side opening 3).
Since the cylindrical body 1a is made of plastic such as polypropylene, polyethylene, or vinyl chloride, the pressing piece 5 bent inward in the radial direction at the base 5b exhibits elasticity. Therefore, when the pressing piece 5 is deformed by inserting the core tube 7 into the cylindrical body 1a so that the distal end portion 5a approaches the inner periphery of the side surface 2, the core tube 7 is moved radially inward from the pressing piece 5. You will receive the power of heading.

Pressing piece 5 is bent in two stages at the base 5b, the openings 4a, the radius R ₁ is shorter than the distance L ₁ from the bent portion 5c to the center axis 8 and the center axis from the tip 5a It is formed to be longer than the distance L ₂ up to 8. The radius R ₁ of the opening 4 a is longer than the radius of the core tube 7, and the distance L ₂ from the distal end portion 5 a of the pressing piece 5 to the central axis 8 is shorter than the radius of the core tube 7. 4b is formed larger than the opening 4a.

In the roll sheet mounting device having such a structure, the holding force by the plurality of pressing pieces 5 installed in the circumferential direction of the cylindrical body 1 a so as to surround the central axis 8 is substantially uniform in the circumferential direction with respect to the core tube 7. Act on. Note that this action is exhibited regardless of the difference in outer diameter as long as the core tube 7 has an outer diameter sufficient to deform the pressing piece 5 when inserted into the cylindrical body 1a. Further, the pressing piece 5 is formed by utilizing a part of the side surface 2 of the cylindrical body 1a and has a simple structure, so that the manufacturing is easy. Further, since the radius R ₁ of the opening 4a is shorter than the distance L ₁ from the bent portion 5c to the center axis 8, the core tube 7 inserted through the opening 4a is opened to the front does not interfere with the bent portion 5c It has the effect | action of being guided by the part 4a. In addition, the opening 4 a has an effect of restricting the movement of the core tube 7 in the radial direction of the cylindrical body 1 a and stabilizing the holding state of the core tube 7 by the pressing piece 5.

  As described above, according to the roll sheet mounting tool of this embodiment, since the core tube 7 is guided by the opening 4a, the roll sheet 6 can be easily mounted on the core tube 7. Further, even when the outer diameters of the plurality of core tubes 7 are different from each other, the roll sheet 6 can be reliably mounted. Furthermore, since the pressing piece 5 is easy to manufacture and the structure of the cylindrical body 1a is simple, it can be manufactured at low cost. Further, by visually confirming the shape of the pressing piece 5 through the side surface opening 3, it is possible to easily find a shape defect or the like.

In addition, the roll sheet installation tool of this invention is not limited to the structure shown in FIG.1 and FIG.2. For example, as shown in FIG. 3A, the opening 4a is made larger than the opening 4b, the radius of the opening 4b is made longer than the radius of the core tube 7 (see FIG. 2C), and the bent portion shorter than the distance L ₁ from 5c to the center axis 8, and may be formed to be longer than the distance L ₂ from the front end portion 5a to the central axis 8. In the cylindrical body 1b having such a structure, since the front surface of the core tube 7 inserted from the opening 4b interferes with the tip 5a of the pressing piece 5, the core tube 7 must be inserted from the opening 4a. . In this case, the above-described operation of the cylindrical body 1a for guiding the core tube 7 is not exhibited, but the operation of limiting the movement of the core tube 7 in the radial direction and stabilizing the holding state of the core tube 7 by the pressing piece 5 is The same applies to the cylindrical body 1b.

Further, as shown in FIG. 3B, a bent portion 5d is provided in the vicinity of the tip portion 5a of the pressing piece 5 in the cylindrical body 1b, and asymptotically approaches the inner periphery of the side surface 2 from the bent portion 5d toward the tip portion 5a. and forming a pressing piece 5 to longer than the distance L ₃ of the radius R ₂ of the opening 4b from the bent portion 5d to the center axis 8, and, from the distance L ₂ from the distal end portion 5a to the central axis 8 Also, it may be formed to be shorter. In the cylindrical body 1c having such a structure, there is no possibility that the tip portion 5a of the pressing piece 5 interferes with the front surface of the core tube 7 inserted from the tip portion 5a side.
Therefore, in the cylindrical body 1a, the direction in which the core tube 7 is inserted is limited, whereas in the cylindrical body 1c, the core tube 7 can be inserted from either of the openings 4a and 4b. When the core tube 7 is inserted from the opening 4b, the opening 4b has an effect of guiding the front surface of the core tube 7 so as not to interfere with the tip portion 5a of the pressing piece 5.
Furthermore, since the movement of the core tube 7 with respect to the radial direction of the cylindrical body 1c is limited by the opening 4b, the holding state of the core tube 7 by the pressing piece 5 is stabilized.
As described above, since the core tube 7 can be inserted from either side of the openings 4a and 4b, for example, as shown in FIG. 3C, the openings 4a and 4b in the cylindrical body 1c. Can be the same size. In the cylindrical body 1d having such a structure, the core tube 7 is guided by the openings 4a and 4b when the core tube 7 is inserted therein, and the holding state of the core tube 7 by the pressing piece 5 is stabilized. Has an effect.

  Furthermore, in this embodiment, the plurality of pressing pieces 5 are provided from the vicinity of the opening 4a toward the vicinity of the opening 4b and at substantially equal intervals with respect to the circumferential direction of the side surface 2. The number of 5 and the positions of the tip 5a and the base 5b are not limited to the case shown in the present embodiment, and can be changed as appropriate. Moreover, the installation location of the several press piece 5 does not necessarily need to be equidistant with respect to the circumferential direction of the cylindrical body 1a. Furthermore, the pressing piece 5 can also be made into the structure bent in one step in the base part 5b. Further, since the pressing piece 5 only needs to have elasticity, the cylindrical body 1a is not limited to plastic but may be made of light metal or paper, for example. Then, instead of bending part of the side surface 2 of the cylindrical body 1 a to form the pressing piece 5, a pressing piece 5 formed separately from the cylindrical body 1 a may be attached to the inner periphery of the side surface 2. In this case, since the material of the cylindrical body 1a is not limited to the elastic material, the material cost of the cylindrical material 1a can be reduced.

The roll sheet mounting tool of Example 2 will be described with reference to FIGS. 4 and 5 (particularly corresponding to claim 3 ).
4 (a) and 4 (b) are a front view and a side view, respectively, of Example 2 of the roll sheet mounting tool according to the embodiment of the present invention. 5 (a) and 5 (b) are cross-sectional views taken along line BB in FIG. 4 (a), and FIG. 5 (c) is a cross-sectional view taken along line CC in FIG. 4 (a). is there. The constituent elements shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof is omitted.
As shown in FIG. 4 and FIG. 5, the roll sheet mounting tool of this example is configured by surrounding two types of pressing pieces 9 a and 9 b having different lengths in place of the pressing piece 5 in the cylindrical body 1 a of Example 1. It is characterized by being alternately installed in the direction.

The roll sheet wearing tool having such a structure has an effect that the core tube 7 inserted into the cylindrical body 1e is held by the pressing pieces 9a and 9b in the vicinity of both ends. Therefore, even when the wide roll sheet 6 is mounted on the long core tube 7 (see FIG. 5B), the mounting state can be stabilized.
In this embodiment, the pressing pieces 9a and 9b are used. However, the types of the pressing pieces having different lengths are not limited to two types, and may be three or more types, for example. In this case, the core tube 7 has the effect | action that it is hold | maintained by each press piece in the several location of the axial direction of the cylindrical body 1e.

A roll sheet wearing tool of Example 3 will be described with reference to FIGS. 6 and 7 (particularly, corresponding to claim 4 ).
FIGS. 6A and 6B are a front view and a side view, respectively, of Example 3 of the roll sheet mounting tool according to the embodiment of the present invention. 7 (a) and 7 (b) are sectional views taken along the line DD of FIG. 6 (a), and FIG. 7 (c) is a sectional view taken along the line EE of FIG. 6 (a). is there. The constituent elements shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof is omitted.
As shown in FIGS. 6 and 7, the roll sheet mounting tool of the present embodiment is a pressing piece in place of the pressing piece 5 in a cylindrical body 1 d (see FIG. 3C) that is a modification of the first embodiment. 10a and 10b are alternately arranged in the circumferential direction so as to be opposite to each other.

  The roll sheet wearing tool having such a structure has an effect that the pressing pieces 10a and 10b respectively hold the core tube 7 inserted into the cylindrical body 1f in the vicinity of both ends. Therefore, even when the wide roll sheet 6 is mounted on the long core tube 7, the mounting state can be stabilized. In this embodiment, the bent portion 5d is provided on both of the pressing pieces 10a and 10b, but the bent portion 5d may be provided on either one.

The invention described in the first to fourth aspects of the present invention is not only for winding a sheet material around a core of a labeling device or a film winding roll of a camera, but also for a paper tube of a medicine packaging device. The present invention can also be applied to the case where a roll for packaging is attached to the.

DESCRIPTION OF SYMBOLS 1a-1f ... Cylindrical body 2 ... Side surface 3 ... Side surface opening part 4a, 4b ... Opening part 5 ... Pressing piece 5a ... Tip part 5b ... Base part 5c , 5d ... Bending part 6 ... Roll sheet 7 ... Core tube 8 ... Center axis 9a , 9b ... Pressing piece 10a, 10b ... Pressing piece

Claims (4)

A cylindrical body in which a roll sheet is wound on a side surface and a core tube is inserted into the inside from a circular opening provided at both ends,
A plurality of pressing pieces made of an elastic material installed inside along the central axis are connected to the inner periphery of the cylindrical body, and gradually approach the central axis from the base toward the tip. And the shortest distance to the central axis is formed to be shorter than the radius of the core tube ,
Said pressing piece is disconnected from the side leaving the base in accordance with shaped cut portion of the co-provided on the side surface of the cylindrical body, the Rukoto formed bent radially inwardly of the cylindrical body A roll sheet mounting tool. The pressing piece is bent outward in the radial direction of the cylindrical body at a bent portion provided in the vicinity of the tip portion, and is formed so as to gradually approach the central axis from the bent portion toward the tip portion. The roll sheet mounting tool according to claim 1, wherein the roll sheet mounting tool is formed so as to gradually approach the inner periphery of the cylindrical body. The roll sheet mounting device according to claim 1 or 2, wherein a plurality of the pressing pieces having different lengths are installed on the inner periphery of the cylindrical body. As the pressing piece, the first pressing piece and the second pressing piece are installed on the inner periphery of the cylindrical body so as to be opposite to each other,
At least one of the first pressing piece and the second pressing piece is bent outward in the radial direction of the cylindrical body at a bent portion provided in the vicinity of the tip portion, and extends from the bent portion toward the tip portion. The roll sheet mounting device according to claim 1, wherein the roll sheet mounting tool is formed so as to be asymptotic to the inner periphery of the cylindrical body instead of being formed so as to be asymptotic to the central axis.

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