Sheet roll support device

Abstract

To easily, surely and quickly mount a sheet roll and remove its paper core. [Solution] An upper support member 12 and a lower support member 7, arranged vertically, are connected on the left and right sides by support members 16, 16. The lower support member 7 supports the underside of a sheet roll 5 around which a sheet 3 is wound, and has a lower support protrusion 11 that is inserted from the lower end of a cardboard tube 2. The upper support member 12 has an upper support protrusion 20 that can be inserted into the upper end of the cardboard tube 2 from the upper end of the cardboard tube and is slidable in the vertical direction. With the lower support protrusion inserted into the lower end of the cardboard tube, the upper support protrusion 20 slides down, and the insertion shaft 21 is inserted into the upper end of the cardboard tube, allowing the sheet roll to be unwound. The upper support protrusion 20 is slid up to remove the cardboard tube. The upper support protrusion 20 has an extra-length shaft 22, and its length range can accommodate multiple vertical lengths of the sheet roll supported by the upper and lower support members.

Description

[Technical Field]

[0001] The present invention relates to a sheet roll support device, and more particularly to a sheet roll support device that supports a sheet roll in which a sheet is wound around a cardboard core so that the sheet can be unwound. [Background technology]

[0002] An example of a sheet roll support device that supports a sheet roll in which a sheet is wound around a cylindrical core material so that it can be unwound is the sheet roll support device (unwinder) described in Patent Document 1. In this sheet roll support device, support arms attached to both ends of a rod have support protrusions at their tips that are inserted into both ends of the cylindrical core material, one support protrusion being fixed to one support arm, and the other support protrusion being connected to the end of a screw shaft that is screwed into the other support arm.

[0003] To attach the sheet roll to the support arms at both ends, it was necessary to insert one of the support protrusions into one end portion of the core material while widening the distance between the support protrusions to a value greater than the length of the core material, and then to thread the screw shaft toward the other support protrusion and insert the other support protrusion into the other end portion of the core material.

[0004] Furthermore, when removing the core material from the support arm after the sheet has been consumed, the screw shaft portion is screwed back in a direction away from the other support protrusion, so that the distance between the support protrusions is greater than or equal to the length of the core material, and then the core material is removed from the support arm.

[0005] As described above, when using the device described in Patent Document 1, the screw shaft portion must be repeatedly screwed forward and backward each time the sheet roll is attached or detached, which makes the work of attaching or detaching the sheet roll to or from the sheet roll support device cumbersome and results in poor work efficiency. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Public Practical Application No. 144037, Showa 56 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention was developed in consideration of the above-mentioned conventional problems, and aims to provide a sheet roll support device that makes it possible to easily, reliably, and quickly attach a sheet roll to the sheet roll support device and remove the paper core after the sheet on the sheet roll has been consumed. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention employs the following means. That is, a first aspect of the sheet roll support device according to the present invention has a lower support member that supports from below the underside of a sheet roll in which a sheet is wound around a cardboard tube, and a lower support protrusion that protrudes upward from the lower end of the cardboard tube is inserted from the lower end of the cardboard tube. An upper support member is provided above the lower support member, facing the lower support member in the vertical direction, and the sides of the upper and lower support members are connected to each other by a support member. The upper support member has an upper support protrusion that can be inserted from the upper end of the cardboard tube at the upper end of the cardboard tube. , due to slip in the axial direction The support member is provided so as to be movable up and down by a slide. With the lower support protrusion inserted into the lower end portion of the cardboard tube, the upper support protrusion is lowered, and the insertion shaft portion forming the lower end side of the upper support protrusion is inserted into the upper end side portion of the cardboard tube. In this inserted state, the sheet roll can be unwound. Then, by raising the upper support protrusion, the insertion shaft portion is disengaged upward from the upper end of the cardboard tube, and in this disengaged state, the cardboard tube is lifted, and the lower support protrusion is disengaged from the lower end of the cardboard tube, thereby allowing the cardboard tube to be removed from the upper and lower support members. Also, the upper support protrusion is attached to the upper end side of the insertion shaft portion. , 100~500mmThe sheet roll is characterized in that it is configured such that a series of surplus length shaft portions are provided, and that multiple types of sheet rolls with different upper and lower lengths can be supported by the upper and lower support members within the surplus length range of the surplus length shaft portions.

[0009] A second aspect of the sheet roll support device according to the present invention has a lower support member that supports from below the underside of a sheet roll formed by winding a sheet around a cardboard tube, and a lower support protrusion that protrudes upward from the lower end portion of the lower support member and is inserted from the lower end of the cardboard tube. An upper support member is provided above the lower support member so as to face the lower support member in the vertical direction, and the sides of the upper and lower support members are connected to each other by strut members, and an upper support protrusion that can be inserted from the upper end of the cardboard tube and is provided on the upper support member in the upper end portion of the cardboard tube so as to be able to slide up and down. Furthermore, when the lower support protrusion is inserted into the lower end portion of the cardboard tube, the upper support protrusion descends, and the insertion shaft portion forming the lower end side of the upper support protrusion is inserted into the upper end portion of the cardboard tube, and when the insertion shaft portion is inserted into the upper end portion of the cardboard tube, an abutment member provided at the upper end of the insertion shaft portion abuts against and is held against the upper end of the cardboard tube of the sheet roll, and in this inserted state, the sheet roll can be unwound. , due to slip in the axial direction The cardboard tube can be lowered by sliding, and when the cardboard tube is removed from the upper and lower support members after the sheet has been consumed, the cardboard tube is lifted so that its lower end is disengaged from the lower support member, and the magnetic attraction between the abutment member and the upper support member prevents the contact member from falling. By lifting the upper support protrusion, the insertion shaft disengages from the upper end of the cardboard tube, and by lifting the cardboard tube in this disengaged state, the lower support protrusion disengages from the lower end of the cardboard tube, thereby allowing the cardboard tube to be removed from the upper and lower support members. The upper support protrusion is attached to the upper end side of the insertion shaft. , 100~500mmThe sheet roll is characterized in that it is configured such that a series of surplus length shaft portions are provided, and that multiple types of sheet rolls with different upper and lower lengths can be supported by the upper and lower support members within the surplus length range of the surplus length shaft portions.

[0010] A third aspect of the sheet roll supporting device according to the present invention is the same as the first aspect. Like In the above, the upper support protrusion, which is provided on the upper support member so as to be slidable in the up and down direction, is constantly urged upward by a urging means, and when the upper support protrusion is in the highest raised state, the insertion shaft portion forming the lower end side of the upper support protrusion comes off upward from the upper end of the cardboard tube, and the lower support protrusion comes off from the lower end of the cardboard tube, thereby allowing the cardboard tube to be removed from the upper and lower support members, and by lowering the upper support protrusion against the urging action, the insertion shaft portion can be inserted into the upper end side of the cardboard tube, and in this inserted state the upper support protrusion is locked so as not to rise.

[0011] A fourth aspect of the sheet roll supporting device according to the present invention is the same as the first aspect. Like In the present invention, the upper support protrusion, which is provided on the upper support member so as to be slidable in the up and down direction, is constantly urged downward by a urging means, and when the upper support protrusion is in the lowest position, the insertion shaft portion forming the lower end side of the upper support protrusion is inserted into the upper end side of the cardboard tube, and by pulling up the upper support protrusion by a required amount against the urging action, the lower support protrusion comes off the lower end of the cardboard tube and the insertion shaft portion comes off the upper end of the cardboard tube, thereby making it possible to remove the cardboard tube from the upper and lower support members.

[0012] A fifth aspect of the sheet roll support device of the present invention is characterized in that, in the first or second aspect, the lower support member is mounted on the support member so that its position can be changed in the vertical direction. [Effects of the Invention]

[0013] With the sheet roll support device according to the present invention, the attachment of the sheet roll and the removal of the paper core after the sheets on the sheet roll have been consumed can be carried out easily, reliably and quickly. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view illustrating a sheet roll supporting device according to the present invention. [Figure 2] This is a front view. [Figure 3] FIG. [Figure 4] 10 is an explanatory diagram illustrating a process of engaging the engagement pieces provided at both ends of the lower support member with required engagement holes provided in the support member. FIG. [Figure 5] 10A and 10B are a perspective view and a cross-sectional view illustrating the configuration of a lower support protrusion. [Figure 6] FIG. 10 is a perspective view showing the upper support member. [Figure 7] 10 is a front view showing a state in which a contact member provided on the lower end side of the upper support protrusion is attracted and held by a magnet fixed to the lower surface of the upper support member. FIG. [Figure 8] 10 is an explanatory diagram illustrating a state in which the retaining plate at the upper end of the upper support protrusion abuts against the upper end of a guide cylinder erected by the upper support member. FIG. [Figure 9] 10A and 10B are explanatory diagrams illustrating the function of the surplus length shaft portion. [Figure 10] 10A and 10B are explanatory diagrams illustrating the function of the surplus length shaft portion. [Figure 11] 10A and 10B are explanatory views illustrating a process of attaching a sheet roll to a sheet roll support device. [Figure 12] 10 is an explanatory diagram illustrating a process of removing the paper tube from the sheet roll support device. FIG. [Figure 13] FIG. 10 is a perspective view showing a state in which the lower support member is positioned above the support member. [Figure 14] FIG. 10 is a front view showing a state in which the sheet roll is attached to the lower support member and the upper support member. [Figure 15] FIG. 10 is a perspective view showing a state in which a required length of sheet has been unwound from the sheet roll. [Figure 16] FIG. 10 is a perspective view illustrating a sheet cutting process. [Figure 17] FIG. 2 is a perspective view illustrating a sheet cutting device. [Figure 18] FIG. 2 is an exploded perspective view illustrating the sheet cutting device. DETAILED DESCRIPTION OF THE INVENTION [Example]

[0015] 1 to 3, a sheet roll support device (hereinafter also referred to as device) 1 according to the present invention has a lower support member 7 that supports from below a lower surface 6 of a sheet roll 5 (FIG. 2) in which a sheet 3 such as an air bubble cushioning sheet, a cloth sheet, a nonwoven fabric sheet, a resin sheet, or the like is wound around a cardboard tube 2, and a lower support protrusion 11 is provided on the lower support member 7 that protrudes upward and is inserted into a portion 9 on the lower end side of the cardboard tube 2 from a lower end 10 (FIG. 2) of the cardboard tube 2.

[0016] An upper support member 12 is provided above the lower support member 7, facing the lower support member 7 in the vertical direction, and the left side portions 13, 15 and right side portions 13, 15 of the upper and lower support members 12, 7 are connected to each other by support members 16, 16. An upper support protrusion 20 that can be inserted into an upper end portion 17 of the cardboard tube 2 from an upper end 19 of the cardboard tube 2 is provided on the upper support member 12 so as to be able to slide up and down. Here, "slide" means to slide.

[0017] Then, with the lower support protrusion 11 inserted into the lower end portion 9 of the cardboard tube 2, the upper support protrusion 20 descends, and the insertion shaft portion 21 forming the lower end side of the upper support protrusion 20 is inserted into the upper end portion 17 of the cardboard tube 2.

[0018] In this inserted state, the sheet roll 5 can be unwound. By raising the upper support protrusion 20, the insertion shaft 21 is disengaged upward from the upper end 19 of the cardboard tube 2 (Fig. 2), and in this disengaged state, the cardboard tube 2 is lifted as shown by arrow F in Fig. 3, whereby the lower support protrusion 11 is disengaged from the lower end 10 of the cardboard tube 2 (Fig. 3), and thus the cardboard tube 2 can be removed from the upper and lower support members 12, 7.

[0019] The upper support protrusion 20 is formed by connecting an extra length shaft portion 22 to the upper end side of the insertion shaft portion 21. In this embodiment, the upper support protrusion 20 is cylindrical as a whole, and the insertion shaft portion 21 is configured as a cylindrical shaft portion 24. The upper support protrusion 20 is configured so that a plurality of types of sheet rolls 5 having different vertical lengths can be supported by the upper and lower support members 12, 7 within the range of the marginal length of the marginal length shaft portion 22. The configuration of the sheet roll support device 1 will be specifically described below.

[0020] 1, the sheet roll support device 1 in this embodiment has a cross-shaped frame 23 at its lower end, and casters 26 are attached to the underside of four end portions 25, 25, 25, 25 of the cross-shaped frame 23, allowing the device to move freely via the casters 26. In this embodiment, two opposing casters 26a, 26a of the four casters 26 are equipped with a locking function. The support members 16, 16 are erected on the upper surface of both end portions of one frame piece 27 of the cross-shaped frame 23, and the distance between the support members 16, 16 is set larger than the maximum diameter of the sheet roll to be supported, for example, about 550 mm.

[0021] 1 to 3, the upper ends 31, 31 of the left and right support members 16, 16 are connected to each other by the upper support member 12, and the same height portions 32, 32 (FIG. 2) on the lower end sides of the left and right support members 16, 16 are connected to each other by the lower support member 7, whose position can be changed in the vertical direction. As a result, the left side portions 13, 15 of the upper and lower support members 12, 7 and the right side portions 13, 15 of the upper and lower support members 12, 7 are connected to each other by the support members 16, 16.

[0022] 1 and 2, the lower support member 7 in this embodiment is composed of a first straight bar member 33 made of, for example, a channel material that is installed horizontally between the left and right support members 16, 16, and a support plate 35 that is placed on the first straight bar member 33. In this embodiment, the support plate 35 is composed of a disk body 35a. A columnar member (in this embodiment, configured in a truncated cone shape) 34 that constitutes the lower support protrusion 11 is fixed in an upright position to the center of the upper surface 43 of the disk body 35a.

[0023] 3 and 4, in this embodiment, engagement pieces 40, 40 are protruded from both ends of the first straight rod member 33. The engagement pieces 40, 40 can be detachably engaged with locking holes 39, 39 arranged side by side, facing each other, at intervals of, for example, 100 mm in the vertical direction, on the side surfaces 36, 36 of the opposing support members 16, 16, and this engagement prevents the first straight rod member 33, which is in a horizontal state, from moving downward.

[0024] 5, a fixing screw shaft 38 protrudes from the center of the lower surface of the columnar member 34, and a circular hole 37 is formed in the center of the upper surface 43 of the disk body 35a, into which the lower portion 34a of the columnar member 34 is inserted. An insertion hole 44 is formed in the upper flange 33a of the first straight rod member 33 made of the channel material, through which the fixing screw shaft 38 is inserted, and a nut 28, into which the fixing screw shaft 38 can be screwed, is fixed to the lower surface of the upper flange 33a.

[0025] Then, the lower portion 34a is inserted into the circular hole portion 37, and the tip 38a of the fixing screw 38 is brought into contact with the end of the screw hole of the nut 28. In this state, the columnar member 34 is rotated, the fixing screw shaft 38 is threaded into the nut 28, and the columnar member 34 is screwed and rotated until the lower surface 34A of the columnar member 34 is in pressure contact with the upper surface 33B of the upper flange 33a, as shown in Figure 5(B). As a result, the upper portion 34b of the columnar member 34 protrudes from the center of the upper surface of the disk body 35a, and the lower support protrusion 11 is formed.

[0026] The columnar member 34 protrudes about 30 mm from the upper surface 43 of the disk body 35a, and the diameter of its lower end is about 35 mm. The protruding portion constitutes the lower support protrusion 11, which is inserted into the lower end portion 9 of the cardboard tube 2 of the sheet roll 5, which is supported from below by the upper surface 43 of the disk body 35, as shown in Figure 2.

[0027] In this embodiment, the upper support member 12 is configured as a second straight bar member 45 having a rectangular cylindrical shape and positioned horizontally, as shown in FIGS. 1-3, 6, and 7. The upper support member 12 is made of steel, and is provided at its longitudinal center with a hole 49 (FIG. 6) through which an elevator cylinder member 47 (the cylindrical upper support protrusion 20 in this embodiment) can be inserted. A lower end 51 of a guide cylinder 50 is welded to the upper surface of the central portion of the second straight bar member 45 at an upper peripheral edge 52 of the hole 49. The guide cylinder 50 guides the elevator cylinder member 47, which slides through the hole 49, allowing it to move up and down. A disk-shaped retaining plate 56 is attached to the upper end of the elevator cylinder member 47, as shown in FIGS. 1-3 and 7, with a peripheral edge 55 that can abut against the upper end 53 of the guide cylinder 50.

[0028] 1 to 3 and 7 to 8, in this embodiment, a contact member 59 (having a diameter of, for example, 120 mm and a thickness of, for example, about 2.6 mm) having a disk shape is provided at an upper portion of the lower end 48 of the elevating cylinder member 47. The cylindrical shaft portion 24 protruding below the contact member 59 becomes the insertion shaft portion 21 to be inserted into the upper end portion 17 of the cardboard tube 2.

[0029] The sheet 3 is stably pulled out from the sheet roll 5 (FIG. 15) as the upper and lower end portions 17, 9 (FIG. 2) of the cardboard tube 2 are supported by the insertion shaft portion 21 and the lower support protrusion 11. The vertical length of the insertion shaft portion 21 is set to about 35 mm.

[0030] In Figure 3, the state in which the cardboard tube 2 is lifted up so that its lower end 10 (Figures 2-3) is disengaged from the lower support protrusion 11 during the process of removing the cardboard tube 2 from the upper and lower support members 12, 7 after the sheet 3 has been consumed is shown by a dotted line.

[0031] When the cardboard tube 2 is lifted, the upper support protrusion 20 is guided by the guide cylinder 50 and rises by sliding, and the abutment member 59 also rises with this rise. In this embodiment, the raised contact member 59 is attracted and held by a magnet 63 fixed to the lower surface 57 of the upper support member 12 made of steel.

[0032] In this way, since a configuration is adopted in which the contact member 59 is attracted and held by the magnet 63, when attaching the sheet roll 5 to the device 1 (Fig. 11) or when removing the cardboard tube 2 from the device 1 (Fig. 12), there is no need to manually hold the raised contact member 59 to prevent it from falling. Therefore, it is possible to simplify the attachment of the sheet roll 5 to the device 1 and the removal of the cardboard tube 2 from the device 1.

[0033] Here, the effect of the margin length shaft portion 22 will be described with reference to Figures 7 to 10. As described above, the margin length shaft portion 22 enables the upper and lower support members 12, 7 to support a plurality of types of sheet rolls 5 having different upper and lower lengths within the margin length range.

[0034] The extra length is a length required for the insertion shaft portion 21 to move downward, and in this embodiment, referring to Fig. 7, for example, this length corresponds to the length between the lower surface 54 of the retaining plate portion 56 and the upper end 53 of the guide cylinder 50. In Fig. 7, the length portion indicated by the symbol L is the extra length.

[0035] The setting of the surplus length of the surplus length shaft portion 22 is determined taking into consideration factors such as whether the lower support member 7 can be repositioned in the vertical direction, the type of roll length of the sheet roll 5 supported by the lower support member 7, the operability when moving the upper support protrusion 20 up and down, and constraints on the maximum lifting of the upper support protrusion 20 at the installation location of the device 1 (for example, the ceiling height at the installation location of the device 1).

[0036] The allowance length of the shaft portion 22 can be set to, for example, 100 to 500 mm, and is set to 200 mm in this embodiment.

[0037] Fig. 9 shows a state in which the insertion shank 21 is moved downward by about 50% of the allowance length and inserted into the upper end portion 17 of the cardboard tube 2. Fig. 10 shows a state in which the insertion shank 21 is moved downward by about 80% of the allowance length and inserted into the upper end portion 17 of the cardboard tube 2. Fig. 8 shows a state in which the insertion shank 21 is moved downward by 100% of the allowance length and inserted into the upper end portion 17 of the cardboard tube 2.

[0038] Therefore, within the 200 mm surplus length range, the cumbersome height adjustment of the lower support member 7 is not necessary for sheet rolls 5 of different roll lengths. Simply by appropriately moving the upper support protrusion 20 up and down, the insertion shaft 21 can be inserted into the upper end portion 17 of the cardboard core 2 of the sheet roll 5. This eliminates the need to adjust the height of the lower support member 7 each time the length of the sheet roll 5 is changed, allowing for reliable and rapid replacement of the sheet roll 5. In addition, the surplus length shaft 22 allows for stepless adjustment, for example, adjustment in 1 cm increments, which is not possible by selecting the locking holes 39 spaced at 100 mm intervals. Furthermore, since the number of times the height of the lower support member 7 must be adjusted can be reduced, the operator need not bend over when adjusting the height of the lower support member 7, thereby reducing physical strain.

[0039] FIG. 11 shows the process of attaching the sheet roll 5 to the device 1. From the state shown in FIG. 11(A), as shown in FIG. 11(B), the upper support protrusion 20 is lifted so that the abutting member 59 is attracted to and held by the magnet 63 on the lower surface portion 57. Then, as shown in FIG. 11(C), the lower surface portion 6 of the sheet roll 5 is placed on the support plate 35. Then, when the upper support protrusion 20 is lowered, the insertion shaft portion 21 is inserted into the upper end portion 17 of the cardboard tube 2 as shown in FIG. 11(C), and the abutting member 59 rests on the upper end 2a of the cardboard tube 2 (which is at the same height as the upper surface portion 58 of the sheet roll 5). In this way, the sheet roll 5 is attached to the device 1.

[0040] Figure 12 shows the process of removing the cardboard tube 2 from the device 1. Figure 12(A) shows the cardboard tube 2 attached to the device 1 in an upright state, with the insertion shaft 21 inserted into the upper end portion 17 of the cardboard tube 2 and the lower support protrusion 11 inserted into the lower end portion 9. In this state, as shown in Figure 12(B), the cardboard tube 2 is lifted vertically and the abutment member 59 is attracted and held by the magnet 63. Thereafter, as shown in Figure 12(C), the cardboard tube 2 is tilted diagonally to remove it from the device 1.

[0041] Figure 13 shows a state in which, when the overall length of the sheet roll 5 is small (for example, 480 to 1100 mm), the lower support member 7 is positioned on the upper side of the support members 16 by engaging the engagement pieces 40 (Figure 4) provided on both ends of the lower support member 7 with the locking holes 39 provided on the upper part of the support members 16. Figure 14 also shows a state in which the sheet roll 5 is placed on the upper surface 43 of the lower support member 7 through a process similar to that shown in Figure 11, and the insertion shaft portion 21 is inserted into the upper end portion 17 of the cardboard tube 2. By positioning the lower support member 7 at a high position in advance in this way, the worker does not have to bend over as much, making it easier to cut the sheet 3 with a cutter, and improving workability.

[0042] 15-18 show the configuration and operation of a sheet cutting device 65 that cuts the rewound sheet 3 to a required length. The sheet cutting device 65 is configured to cut the rewound sheet 3 to a required length with a cutter 64. As shown in FIG. 15, the sheet cutting device 65 has a base surface 67 that can guide the rewound sheet 3 while maintaining a vertically planar state and is provided with a first cut groove 66 that is continuous in the vertical direction. A cover member 69 that is superimposed on the base surface 67 is attached to an inner edge 72 of one of the support members 16a via a hinge member 71 attached to one side edge 70 of the base surface 67 so as to be able to open and close. As shown in FIGS. 15-16, the cover member 69 is provided with a second cut groove 73 that faces the first cut groove 66 when the cover member 69 is closed.

[0043] Next, we will explain the process of unwinding the sheet 3 by a required length from the sheet roll 5 and cutting the sheet 3. When unwinding the sheet 3 in this way, excessive rotation of the sheet roll 5 can be suppressed by the friction between the lower surface 6 of the sheet roll 5 and the support plate 35 and the friction between the abutment member 59 and the upper surface 58 of the sheet roll 5 (FIG. 15).

[0044] When cutting the sheet 3, the casters 26a (FIG. 1) are locked to stabilize the device 1, and the unwound sheet 3 is brought into contact with the base surface portion 67 by opening the cover member 69 as shown in FIG. 15. In this state, the cover member 69 is closed as shown in FIG. 16. The closed state is maintained by the biasing action of a spring member (not shown) incorporated in the hinge member 71. Thereafter, a sliding cutter blade 75 is inserted into the second cut groove portion 73 of the cover member 69 and the first cut groove portion 66 of the base surface portion 67, which are in a mating state. In this inserted state, the cutter blade 75 is moved from top to bottom, and the sheet 3 is cut to the required length. [Example]

[0045] The present invention is by no means limited to the above-described embodiments, and it goes without saying that various design modifications are possible within the scope of the claims. Examples of such modifications are as follows.

[0046] (1) The upper support protrusion 20 is formed by connecting the surplus length shaft portion 22 to the upper end side of the insertion shaft portion 21, and the upper support protrusion 20 may be formed as a cylindrical or solid columnar body, or as a square pipe or a C-shaped bent cylindrical body. In such a configuration, the insertion shaft portion 21 inserted into the upper end portion 17 of the cardboard tube 2 may be formed so as to allow the sheet roll 5 to be unwound without any hindrance. For example, it is preferable to form it as a cylindrical or columnar member that can abut against the inner peripheral surface of the cardboard tube 2 without any difficulty.

[0047] (2) The upper support protrusion 20, which is provided on the upper support member 12 so as to be slidable in the vertical direction, may be constantly biased upward by a biasing means. In this case, when the upper support protrusion 20 is in the highest raised state, the insertion shaft 21 forming the lower end side of the upper support protrusion 20 disengages upward from the upper end 19 of the cardboard tube 2, and the lower support protrusion 11 disengages from the lower end 10 of the cardboard tube 2, thereby allowing the cardboard tube 2 to be removed from the upper and lower support members 12, 7. By lowering the upper support protrusion 20 against the biasing action, the insertion shaft 21 can be inserted into the upper end portion 17 of the cardboard tube 2, and in this inserted state, the upper support protrusion 20 is locked so as not to rise.

[0048] (3) The upper support protrusion 20, which is provided on the upper support member 12 so as to be slidable in the vertical direction, may be constantly biased downward by a biasing means. In this case, the upper support protrusion 20, which is provided on the upper support member 12 so as to be slidable in the vertical direction, is constantly biased downward by a biasing means, and when the upper support protrusion 20 is in the lowest state, the insertion shaft 21 forming the lower end side of the upper support protrusion 20 is inserted into the portion 17 on the upper end side of the cardboard tube 2, and by pulling up the upper support protrusion 20 by a required amount against the biasing action, the lower support protrusion 11 comes off the lower end of the cardboard tube 2 and the insertion shaft 21 comes off the upper end of the cardboard tube 2, thereby allowing the cardboard tube 2 to be removed from the upper and lower support members 12, 7.

[0049] (4) In the case where the device 1 according to the present invention is configured so that the upper support protrusion 20 can slide down by the action of gravity, and when the cardboard tube 2 is removed from the upper and lower support members 12, 7 after the sheet 3 has been consumed, a configuration is adopted in which the abutment member 59 is prevented from falling by magnetic attraction between the abutment member 59 and the upper support member 12, the arrangement of the magnet 63 as a means of magnetic attraction is not limited to the configuration shown in the above embodiment.

[0050] (5) The abutment member 59 is not limited to a circular plate shape as long as it can abut against the upper surface 58 (FIG. 8) of the sheet roll 5 to ensure the stability of the inserted state of the insertion shaft portion 21, and the magnetic attraction between the abutment member 59 and the upper support member 12 prevents the abutment member 59 from falling.

[0051] (6) If the upper support protrusion 20 is configured to descend with the lower support protrusion 11 inserted into the lower end portion 9 of the cardboard tube 2, and the insertion shaft portion 21 forming the lower end side of the upper support protrusion 20 is inserted into the upper end portion 17 of the cardboard tube 2, the abutment member 59 may be omitted.

[0052] (7) The support member 16 connecting the side portions 13, 15 of the upper and lower support members 12, 7 may be either the left side portions or the right side portions shown in the above embodiment.

[0053] (8) When the sheet roll 5 is heavy, the lower support member 7 supporting the lower surface 6 of the sheet roll 5 from below can be made rotatable via a bearing (the disk body 35a in FIG. 1) in order to facilitate unwinding of the sheet 3 as the sheet roll 5 rotates. In this case, it is preferable that the contact member 59 rotates about its axis due to the rotation of the sheet roll 5 as the sheet roll 5 rotates about its axis due to the rotation of the upper support protrusion 20 within the guide cylinder 50.

[0054] (9) The upper support protrusion 20 can be configured to move up and down by sliding, not only by using the guide cylinder 50, but also by fitting opposing vertical protrusions on the upper support protrusion 20 into opposing vertical guide grooves. [Explanation of symbols]

[0055] 1 Sheet roll support device 2 Paper tube 3 seats 5 sheet rolls 6 Bottom part 7 Lower support member 9 Lower end part 10 Bottom end 11 Lower support protrusion 12 Upper support member 16 Support member 17 Upper end part 21 Insertion shaft 22 Allowance length shaft 35 Support plate 39 Locking hole 40 Engagement piece 50 Guide cylinder 59 Contact member 63 Magnet 65 Sheet cutting device

Claims

1. a lower support member that supports from below the lower surface of the sheet roll in which the sheet is wound around the paper tube; a lower support protrusion that is inserted into a lower end portion of the cardboard tube from the lower end of the cardboard tube and protrudes upward from the lower support member; an upper support member is provided above the lower support member so as to face the lower support member in the vertical direction, and the sides of the upper and lower support members are connected to each other by support members; The upper support member is provided with an upper support protrusion that can be inserted into an upper end portion of the cardboard tube from the upper end of the cardboard tube and that can move up and down by sliding in the axial direction, With the lower support protrusion inserted into the lower end portion of the cardboard tube, the upper support protrusion descends, and an insertion shaft portion forming the lower end side of the upper support protrusion is inserted into the upper end portion of the cardboard tube, The sheet roll can be unwound in the inserted state, By raising the upper support protrusion, the insertion shaft is disengaged upward from the upper end of the cardboard tube, and by lifting the cardboard tube in this disengaged state, the lower support protrusion is disengaged from the lower end of the cardboard tube, thereby allowing the cardboard tube to be removed from the upper and lower support members, The upper support protrusion has a 100 to 500 mm surplus length shaft portion connected to the upper end side of the insertion shaft portion, and the upper and lower support members can support multiple types of sheet rolls with different upper and lower lengths within the surplus length range of the surplus length shaft portion.

2. a lower support member that supports from below the lower surface of the sheet roll in which the sheet is wound around the paper tube; a lower support protrusion that is inserted into a lower end portion of the cardboard tube from the lower end of the cardboard tube and protrudes upward from the lower support member; an upper support member is provided above the lower support member so as to face the lower support member in the vertical direction, and the sides of the upper and lower support members are connected to each other by support members; The upper support member has an upper support protrusion that can be inserted from the upper end of the cardboard tube and is provided on the upper end side of the cardboard tube so as to be movable up and down by sliding, With the lower support protrusion inserted into the lower end portion of the cardboard tube, the upper support protrusion is lowered, and the insertion shaft portion forming the lower end side of the upper support protrusion is inserted into the upper end portion of the cardboard tube, When the insertion shaft portion is inserted into the upper end portion of the cardboard tube, an abutting member provided at the upper end of the insertion shaft portion abuts against the upper end of the cardboard tube of the sheet roll and is held there. The sheet roll can be unwound in the inserted state, Furthermore, the upper support protrusion can be lowered by sliding in its axial direction due to the action of gravity, and when the paper tube is removed from the upper and lower support members after the sheet has been consumed, the paper tube is lifted so that its lower end is released upward from the lower support member, and the magnetic attraction between the abutment member and the upper support member prevents the contact member from falling. By raising the upper support protrusion, the insertion shaft is disengaged upward from the upper end of the cardboard tube, and by lifting the cardboard tube in this disengaged state, the lower support protrusion is disengaged from the lower end of the cardboard tube, thereby allowing the cardboard tube to be removed from the upper and lower support members, The upper support protrusion has a 100 to 500 mm surplus length shaft portion connected to the upper end side of the insertion shaft portion, and the upper and lower support members can support multiple types of sheet rolls with different upper and lower lengths within the surplus length range of the surplus length shaft portion.

3. the upper support protrusion, which is provided on the upper support member so as to be slidable in the up-down direction, is constantly biased upward by a biasing means, and when the upper support protrusion is in the highest raised state, the insertion shaft portion forming the lower end side of the upper support protrusion disengages upward from the upper end of the cardboard tube, and the lower support protrusion disengages from the lower end of the cardboard tube, This allows the paper tube to be removed from the upper and lower support members, and by lowering the upper support protrusion against the biasing action, the insertion shaft can be inserted into the upper end portion of the paper tube, and in this inserted state, the upper support protrusion is locked so that it does not rise.

4. The upper support protrusion, which is provided on the upper support member so as to be slidable in the up-down direction, is constantly biased downward by a biasing means, and when the upper support protrusion is in the lowest position, the insertion shaft portion forming the lower end side of the upper support protrusion is inserted into the upper end side portion of the cardboard tube, 2. The sheet roll support device according to claim 1, wherein the lower support protrusion is disengaged from the lower end of the cardboard tube and the insertion shaft is disengaged from the upper end of the cardboard tube by pulling up the upper support protrusion by a required amount against the urging action, thereby allowing the cardboard tube to be removed from the upper and lower support members.

5. 3. The sheet roll support device according to claim 1, wherein the lower support member is provided on the support member so that its position can be changed in the up-down direction.

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