Winding drum

Abstract

To provide a take-up drum capable of easily and inexpensively removing a long linear body such as a metal wire taken up by the take-up drum in disassembling with a simple constitution.SOLUTION: In a winding drum in which a pair of disc-shaped flange portions are disposed to face each other, a body portion of a tubular body is disposed between the pair of flange portions, and a long linear body is wound around the body portion, the body portion includes a cutout portion in which a part of the tubular body is cut out over a body length direction, and a fitting portion that is reduced in an inner diameter direction on at least one side end of the tubular body, and the flange portion includes a recessed groove portion that is fitted to at least the fitting portion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a winding drum for winding up long objects such as metal wires, electric wires, and cables, and more particularly to a winding drum from which the long objects can be easily removed. [Background technology]

[0002] Metal wires, electric wires, cables, their prototypes, or remaining wires from their manufacturing lines (hereinafter also referred to as long linear bodies) wound onto a winding drum must then be removed from the winding drum for scrap.

[0003] Currently, when the long wire is a thick metal wire or an electric wire or cable, it is difficult to cut it while it is wound on the winding drum, so it is rewound onto a parasol drum and collected in bundles.On the other hand, when the long wire is a thin metal wire, it is collected by cutting it while it is wound on the winding drum with a cutter or clippers specially designed for metal.

[0004] However, when bundling wires in a parasol drum, it takes an extremely long time to rewind long wires that can be thousands to tens of thousands of meters in length. Furthermore, when cutting thin metal wires, not only does it take time to cut them, but there are also safety concerns for workers, such as the risk of puncture wounds and the ingestion of cutting chips.

[0005] In view of these circumstances, improvements to winding drums have been developed in terms of cost and safety.

[0006] A known conventional winding drum includes, for example, a body portion made up of multiple divided members formed in an arc shape when viewed axially, flange portions provided at both ends of the body portion, multiple pins connecting the flange portions to the multiple divided members, and multiple biasing members that bias each of the multiple pins, wherein a connecting hole into which the pin is inserted is formed in one of the multiple divided members or the flange portion, and the pin and the biasing member are attached to the other of the multiple divided members or the flange portion, and the biasing member biases the pin toward the connecting hole (see Patent Document 1).

[0007] Furthermore, for example, a conventional winding drum is known that includes a body portion made up of multiple divided members formed in an arc shape when viewed axially, flange portions provided at both ends of the body portion, multiple first fasteners fixed to the divided members, and multiple second fasteners fixed to the flange portions, and the body portion and the flange portions are fixed together by engagement between the first fasteners and the second fasteners (see Patent Document 2).

[0008] Also, for example, a conventional winding drum is known in which the winding drum is made of a long member formed by arranging disk-shaped flange members on both the left and right sides of a cylindrically formed body member, and the body member is characterized by comprising a flat plate-like member formed so as to be deformable into a cylindrical shape, and a core member that is placed within the body member and maintains the cylindrical shape when the plate-like member is deformed into a cylindrical shape (see Patent Document 3). [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Publication No. 2020-033169 [Patent Document 2] Patent Publication No. 2021-75348 [Patent Document 3] Japanese Patent Application Publication No. 2020-7149 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0010] Some conventional winding drums, such as those disclosed in Patent Documents 1 and 2, have a body portion made up of multiple divided members, or those disclosed in Patent Document 3, have a body portion made up of a flat plate-like member that is formed so as to be deformable into a cylindrical shape, thereby making disassembly and assembly easier.

[0011] However, when a long linear object such as a metal wire is wound around a conventional winding drum, a tightening force acts on the body, making it difficult to remove the flange or deform the body during dismantling. This poses a problem in that it is difficult to easily remove the long linear object from the body.

[0012] Furthermore, as in Patent Documents 1 to 3, conventional winding drums require more parts and complex mechanisms than normal winding drums, and there is also the problem that the manufacturing and maintenance costs of the winding drum itself are high.

[0013] The present invention has been made to solve the above-mentioned problems, and aims to provide a winding drum with a simple configuration that allows long linear objects such as metal wires wound around the winding drum to be easily and inexpensively removed when dismantling. [Means for solving the problem]

[0014] The inventor conducted extensive research into the operation of winding drums when they are dismantled, and discovered a new mechanism that has a simple configuration and can easily and inexpensively remove long linear objects such as metal wires when dismantled, while maintaining the strength required for normal use, leading to the creation of the present invention.

[0015] Thus, the winding drum of the present invention has a pair of disk-shaped flanges arranged opposite each other, a cylindrical body portion arranged between the pair of flanges, and a long linear body wound around the body portion, wherein the body portion has a cutout portion in which a portion of the cylindrical body is cut out in the body length direction, and an engaging portion at least at one side end of the cylindrical body that reduces in the inner diameter direction, and the flange portion has a recessed groove portion that engages with at least the engaging portion.

[0016] In this way, the winding drum of the present invention has a pair of disk-shaped flanges arranged opposite each other, a cylindrical body portion arranged between the pair of flanges, and a long linear object wound around the body portion, wherein the body portion has a cutout portion in which a portion of the cylindrical body is cut out in the body length direction, and a fitting portion that shrinks in the inner diameter direction at at least one side end of the cylindrical body, and the flange portion has a groove portion that fits into at least the fitting portion.Since the fitting portion has a shape that shrinks in the inner diameter direction at at least one side end of the cylindrical body, when the flange portion and the body portion are released from their fixation, even if the long linear object is wound around the body portion and the body portion is tightened, the tightening force will cause the body portion to slide and shift towards the center of the disk-shaped flange portion, and this simple configuration will allow the wound long linear object to be removed easily and at low cost.

[0017] Furthermore, in the winding drum according to the present invention, the trunk portion is formed of a cylinder divided into a plurality of pieces as necessary. Because the trunk portion is formed of a cylinder divided into a plurality of pieces, when the flange and the trunk portion are released from fixation, the force applied by the long linear object wound and fastened around the trunk portion promotes a sliding movement of each of the divided cylinders so as to shift and form a single cylinder with a smaller inner diameter toward the center of the disk-like flange, thereby enabling the wound long linear object to be removed easily and at low cost with a simpler configuration.

[0018] Furthermore, in the winding drum according to the present invention, the groove portion has an annular shape whose outer periphery coincides with the outer periphery of the cylindrical body, as necessary. Since the groove portion has an annular shape whose outer periphery coincides with the outer periphery of the cylindrical body, the body portion is normally firmly fixed to the outer periphery of the groove portion, and when the fixation of the flange portion and the body portion is released, the force of the long linear object wound and fastened around the body portion promotes the body portion to slide inward toward the inner periphery of the groove portion, thereby enabling the wound long linear object to be removed easily and at low cost with a simpler configuration.

[0019] Furthermore, in the winding drum according to the present invention, the flange may, as necessary, be provided with a protrusion near the position where it engages with the notch, the protrusion having a cross-sectional shape whose width decreases toward the center of the disk of the flange. Since the flange is provided with a protrusion near the position where it engages with the notch, the protrusion normally firmly supports and fixes the end face of the body portion cut out by the notch in a direction that widens it, at a position near the notch, and when the flange and the body portion are released from fixation, the force of the long linear object wound around the body portion and fastening it promotes the body portion to slide inward toward the inner periphery of the recessed groove along the cross-sectional shape whose width decreases, thereby enabling the wound long linear object to be removed easily and at low cost with a simpler configuration. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a configuration diagram of a winding drum according to a first embodiment of the present invention. [Figure 2] 1A and 1B are explanatory views illustrating a fitting portion and a recessed groove portion of a winding drum according to a first embodiment of the present invention. [Figure 3] FIG. 2 is an explanatory view illustrating a recessed groove portion of a flange portion of a winding drum according to the first embodiment of the present invention. [Figure 4] 1 is a configuration diagram of a winding drum according to a first embodiment of the present invention. [Figure 5]1 is an explanatory view illustrating a flange portion of a winding drum according to a first embodiment of the present invention. FIG. [Figure 6] FIG. 2 is an explanatory view illustrating a fixed state of the winding drum according to the first embodiment of the present invention. [Figure 7] 4A and 4B are explanatory views illustrating a fixing operation of a fitting portion and a recessed groove portion of a winding drum according to the first embodiment of the present invention. [Figure 8] 1A and 1B are explanatory views illustrating a state in which a winding drum according to a first embodiment of the present invention is used. [Figure 9] 1A and 1B are explanatory views illustrating a disassembling operation of a winding drum according to a first embodiment of the present invention. [Figure 10] 3A and 3B are explanatory views illustrating the operation of disassembling the fitting portion and the recessed groove portion of the winding drum according to the first embodiment of the present invention. [Figure 11] FIG. 4 is a configuration diagram of a winding drum according to a second embodiment of the present invention. [Figure 12] 10A and 10B are explanatory views illustrating operations when a winding drum according to a second embodiment of the present invention is fixed and disassembled. DETAILED DESCRIPTION OF THE INVENTION

[0021] (First embodiment) As shown in Figure 1(a), the winding drum of the first embodiment has a pair of disk-shaped flanges 1 arranged opposite each other, a cylindrical body 2 arranged between the pair of flanges 1, and a long linear body 100 wound around the body 2, the body 2 having a cutout portion 21 in which a portion of the cylindrical body is cut out in the body length direction, and an engaging portion 22 that narrows in the inner diameter direction at at least one side end A (or one side end B) of the cylindrical body, and the flange 1 has a groove portion 11 that engages with at least the engaging portion 22.

[0022] The material of the flange 1 is not particularly limited, but for example, wood such as beech can be used, which provides sufficient strength and allows for a low-cost, lightweight construction.

[0023] The material of the body 2 is not particularly limited, but for example, a resin such as polyacetal resin (POM) can be used, which provides sufficient strength while being smooth and lightweight. The weight can be reduced by reducing the thickness of the body 2.

[0024] As for the shape of such a body portion 2, for example, as shown in Fig. 1(a), when there are two notches 21, the body portion 2 can be configured from a cylinder divided into two or more parts. Also, as shown in Fig. 1(b), when there are three notches 21, the body portion 2 can be configured from a cylinder divided into three or more parts.

[0025] In addition, the shape of the body 2 can be, for example, as shown in Figure 1(c), in the case where it has one cutout portion 21, and the cross-sectional shape perpendicular to the body length direction can be configured in the shape of the letter C.

[0026] As shown in Figure 2(a), the fitting portion 22 of the body 2 has a shape that narrows in the inner diameter direction C toward the disk center M of the flange portion 1, i.e., a so-called tapered shape, at at least one side end A (or one side end B) of the cylindrical body.

[0027] The inclination angle (taper angle) of this tapered shape is not particularly limited, but for example, as shown in FIG. 2, the inclination angle θ with respect to the body length direction can be set to 30 degrees to 75 degrees, more preferably 40 degrees to 70 degrees, for example, 60 degrees.

[0028] This tapered shape may be present at at least one side end of the cylindrical body, and may be present at both ends of the cylindrical body, one side end A and one side end B, as shown in Fig. 2(a). Alternatively, this tapered shape may be present at one side end A (or one side end B) of the two side ends of the cylindrical body, as shown in Fig. 2(b).

[0029] The groove 11 of the flange 1 fits into the fitting portion 22 of the body 2 having such a shape. That is, when one side end A (or one side end B) of the tubular body in the fitting portion 22 of the body 2 has a tapered shape, the groove 11 of the flange 1 has a shape with a slope that fits into this tapered shape, that is, a wedge shape that becomes shallower toward the inside.

[0030] Furthermore, in the case where one side end of the cylindrical body in the fitting portion 22 of the body portion 2 is not tapered, the groove portion 11 of the flange portion 1 has a shape that can fit into this non-tapered shape.

[0031] The shape of the groove 11 is not particularly limited, but it is preferable that the outer periphery K of the groove 11 has an annular shape (so-called doughnut shape) that matches the outer periphery of the cylindrical body, as shown in Fig. 3. The width L of the groove 11 is equal to or greater than the width J of the cylindrical body. This ensures that the groove 11 has a range of motion when the body 2, which is the cylindrical body, is fastened and released.

[0032] The method for fixing the flange 1 and the body 2 is not particularly limited, but can be, for example, fixing using a bolt 200 and a nut 201. For example, as shown in Fig. 4(a), the flange 1 can have flange through-holes 11a and 11b in the recessed groove 11, through which the bolt 200 and the nut 201 pass, and the body 2 can have, at one side end A (or one side end B), body through-holes 22a and 22b, through which the bolt 200 passes.

[0033] In addition to the configuration in which the bolt 200 penetrates the body 2, the bolt 200 can also be disposed inside the body 2. In this case, since the bolt 200 and the body 2 are separated, the body 2 as a whole can move more easily inward during dismantling, which can improve the efficiency of the dismantling operation.

[0034] As shown in FIG. 4(a), the flange 1 has one or more key holes 1a and 1b used as hook holes for synchronizing with the rotation of the equipment when rotating on the equipment. As shown in FIG. 4(a), the flange 1 has a protruding convex body 12 near the notch 21 of the body 2, and as shown in FIG. 4(b), a portion of the end face of the body 2 near the notch 21 can be configured as a recessed concave body 23. This allows the convex body 12 and the concave body 23 to fit together only when fastened, enabling strong and stable fastening. As shown in FIG. 4(a), the bolt 200 penetrates the interior of the body 2 on the side of the disk of the flange 1 facing the convex body 12, thereby maintaining the fastened position of the body 2.

[0035] The number and arrangement of the above-mentioned collar portion through-holes (11a, 11b) and body portion through-holes (22a, 22b) are not particularly limited. However, more preferably, from the viewpoint of ease of manufacturing and smooth fastening and unlocking operations, they are each arranged at equal intervals on the circumference (on the inner circumference of the collar portion 1 and on the cross-sectional circumference of the cylindrical body, respectively). For example, as shown in FIG. 5(a), four of these collar portion through-holes and body portion through-holes can be arranged at equal intervals on the circumference. Alternatively, for example, as shown in FIG. 5(b), two of these collar portion through-holes and body portion through-holes can be arranged at equal intervals on the circumference. Furthermore, it is more preferable to use a small number of bolts 200, which can shorten the removal work.

[0036] The long linear object 100 wound around the trunk portion 2 refers to a long wire made of metal, and examples thereof include metal wires, electric wires and cables, prototypes thereof, and remaining wires in their production lines.

[0037] Hereinafter, the operation of the winding drum according to the first embodiment will be described taking as an example a case where the body portion 2 is configured from a cylindrical body divided into two parts as shown in FIG. 5(b).

[0038] (Fixed operation) As shown in Figure 6, a bolt 200 and a nut 201 are fastened to each of the two flange through-holes 11a and the two barrel through-holes 22a, which are arranged at equal intervals on the circumference. The use of only two bolts 200 reduces the labor required for disassembly. Furthermore, adding a nut 201 to the inside of one side prevents the bolt 200 from coming loose, improving assembly workability. Furthermore, by reducing the thickness of the barrel 2 and arranging the bolt 200 on the inside of the barrel 2, the barrel 2 as a whole can be more easily moved inward.

[0039] 7, a force F directed toward the outer periphery of the flange 1 is generated in the body 2, and the fitting portion 22 of the body 2 receives a force F1 acting along the slope of the groove 11 of the flange 1. As a result, as shown in FIG. 6 above, the fitting portion 22 of the body 2 slides up to the outer periphery K of the groove 11, and the body 2 is fixed at the outer periphery K of the groove 11, thereby fixing the flange 1 and the body 2 together.

[0040] That is, by using fasteners (bolt 200 and nut 201) fixed to the flange through-hole 11a and the trunk through-hole 22a, respectively, the flange 1 is tightened in a direction sandwiching the trunk 2, pulling the trunk 2 in the outer diameter direction and fixing it to the recessed groove 11. In this fixed state, as shown in FIG. 8, a long linear body 100 can be wound around the outer periphery of the trunk 2.

[0041] (Dismantling operation) When dismantling, the fastening bolts 200 and nuts 201 are removed, generating a force G1 that moves the pair of flanges 1 away from each other, as shown in Fig. 9. As a result, as shown in Fig. 10(a), the body 2, which is fastened by the long linear body 100 wound around it, is constantly subjected to a force by the long linear body 100 that contracts it toward the center (inside) of the disk of the flange 1. In addition to being subjected to this contracting force, the body 2 is also subjected to the above-mentioned force G1 in a superimposed manner, so that the fitting portion 22 of the body 2 is subjected to a force G2 that moves toward the center of the disk of the flange 1 along the slope of the recessed groove portion 11 of the flange 1, as shown in Fig. 10(b).

[0042] 9 above, the trunk portion 2 as a whole naturally receives a force G directed toward the center of the disk of the flange portion 1, and even when the long linear object 100 is wound around the trunk portion 2, the trunk portion 2 shifts inward (toward the center of the disk) by utilizing the force of the winding, thereby easily removing the long linear object 100. In this way, the winding drum according to this embodiment is easy to disassemble, and the long linear object 100 can also be easily removed, making scrapping easy.

[0043] In this way, in the winding drum of this embodiment, the fitting portion 22 is shaped to shrink in the inner diameter direction at at least one side end of the cylindrical body, so that when the flange portion 1 and the body portion 2 are released from their fixation, even if the long linear body 100 is wound around the body portion 2 and the body portion 2 is tightened, the tightening force causes the body portion 2 to slide and shift toward the center of the disk-shaped flange portion 1, and with a simple configuration, the long linear body 100 that is tightly wound around the body portion 2 can be removed easily and at low cost.

[0044] Furthermore, as described above, since the body portion 2 is configured to consist of a cylinder divided into multiple pieces, when the flange portion 1 and the body portion 2 are released from their fixed state, the force of the long linear body 100 being wound and fastened around the body portion 2 is applied, which promotes a sliding movement of each of the multiple divided cylinders toward the center of the disk-shaped flange portion 1 so as to form a single cylinder with a smaller inner diameter, thereby enabling the wound long linear body 100 to be removed easily and at low cost with a simpler configuration.

[0045] Furthermore, as described above, the groove portion 11 has a ring shape whose outer periphery matches the outer periphery of the cylindrical body, and therefore, under normal circumstances, the body portion 2 is firmly fixed to the outer periphery of the groove portion 11, and when the fixation between the flange portion 1 and the body portion 2 is released, the force of the long linear body 100 being wound around and tightened around the body portion 2 promotes the body portion 2 to slide inward toward the inner periphery of the groove portion 11, thereby enabling the wound long linear body 100 to be removed easily and at low cost with a simpler configuration.

[0046] (Second embodiment) The winding drum of the second embodiment has the flange portion 1, the body portion 2, the cutout portion 21, and the fitting portion 22, similar to the first embodiment, and as shown in Figure 11, the flange portion 1 is provided with a protrusion 13 near the position where it fits into the cutout portion 21, the protrusion 13 having a cross-sectional shape whose width decreases toward the center of the disk of the flange portion 1.

[0047] The protrusion 13 is not particularly limited, but can be made of resin. The number of protrusions 13 is also not particularly limited, and at least one is sufficient, but more preferably an even number (for example, two, four, six, etc.) of protrusions are arranged in opposing positions, and for example, two protrusions can be arranged in opposing positions as shown in Fig. 11.

[0048] When the winding drum is fixed, as shown in Figure 12(a), the body 2 receives a force P in a direction away from the center of the disk of the flange 1, causing it to slide along the side of the protrusion 13 near the notch 21, and the notch 21 is fixedly supported by the protrusion 13, firmly fixing it in the fixed position.

[0049] Furthermore, when dismantling the winding drum, for example, by removing the fastened bolt 200 and nut 201, as shown in Figure 12(b), the body 2 receives a force Q in a direction toward the center of the disk of the flange 1 so as to slide along the side of the protrusion 13 near the notch 21, and is also released from fixation to the protrusion 13, so that the body 2 physically separates from the flange 1. Note that, although the number of protrusions 13 is described above as two, arranged in positions facing each other, the number is not particularly limited to this, and as long as there is at least one, the same fixation and release operations as described above can be performed.

[0050] In this way, the flange 1 is provided with a protrusion 13 near the position where it engages with the cutout 21, the protrusion 13 having a cross-sectional shape whose width decreases toward the center of the disk of the flange 1. Under normal circumstances, the protrusion 13 firmly supports and fixes the end face of the body 2 cut out by the cutout 21 in a direction that expands it, at a position near the cutout 21. When the flange 1 and the body 2 are released from fixation, the force of the long linear body 100 being wound around and tightened around the body 2 promotes the body 2 to slide inward toward the inner circumference of the groove 11 along the cross-sectional shape of the protrusion 13 whose width decreases. This makes it possible to easily and inexpensively remove the wound long linear body 100 with a simpler configuration.

[0051] Examples will be described below as examples for explaining the present invention, but the present invention is not limited to these examples.

[0052] Example 1 A winding drum with the configuration shown in Figure 5(a) above was created. That is, a body part was divided into two, with a taper angle of 60 degrees, and four bolts (which penetrated the inside of the body part) were used to secure the drum. A lightweight resin (POM) was used for the body part, and a lightweight and inexpensive wood (beech) was used for the flange part.

[0053] For the winding operation of the winding drum, 2 kg (approximately 140,000 m) of φ0.08 mm metal wire was wound. As a result, it was confirmed that the center of gravity was balanced during the rotation of the winding operation, and winding was possible without any problems even at high speeds. In addition, for dismantling the winding drum, the bolts and nuts were removed, and it was possible to remove the 2 kg (approximately 140,000 m) of φ0.08 mm metal wire wound on it without any problems.

[0054] Example 2 A winding drum with the configuration shown in Figure 5(b) above was created. That is, a body section was divided into two, with a taper angle of 60 degrees, and two bolts (which pass through the inside of the body section) were fixed in place. The body section was also made thinner to reduce weight, and the bolts were positioned inside the body section. A lightweight resin (POM) was used for the body section, and lightweight, inexpensive wood (beech) was used for the flange section.

[0055] For the winding operation of the winding drum, 2 kg (approximately 140,000 m) of φ0.08 mm metal wire was wound. As a result, it was confirmed that the center of gravity was balanced during the rotational motion of the winding operation, and that winding was possible without any problems even at high speeds. Furthermore, for the dismantling operation of the winding drum, the bolts and nuts were removed, and the drum was able to be removed without any problems while still wound with 2 kg (approximately 140,000 m) of φ0.08 mm metal wire. By using a small number of bolts, the removal work time was shortened. Furthermore, because the bolts and body are separated, the body can move inward easily as a whole during dismantling, confirming the high efficiency of the dismantling operation. [Explanation of symbols]

[0056] 1. Tsuba 1a Knockout 1b Knockout 11 Groove 11a Flange through hole 11b Flange through hole 12 Convex body 13 Protrusions 2. Torso 21 Notch 22 Fitting part 22a Body through hole 22b Body through hole 23 Concave body 100 Long linear object 200 volts 201 Nut

Claims

1. A winding drum having a pair of disk-shaped flanges disposed opposite to each other, a cylindrical body disposed between the pair of flanges, and a long linear body wound around the body, the barrel portion has a notch portion formed by cutting out a portion of the cylindrical body in the barrel length direction, and a fitting portion that reduces in an inner diameter direction at at least one side end of the cylindrical body, The flange portion has at least a recessed groove portion that fits with the fitting portion. Winding drum.

2. The winding drum according to claim 1, The body is a cylinder divided into multiple parts. Winding drum.

3. The winding drum according to claim 1, The groove portion has an annular shape whose outer periphery coincides with the outer periphery of the cylindrical body. Winding drum.

4. The winding drum according to claim 1, The flange portion is provided with a protrusion having a cross-sectional shape whose width decreases toward the center of the disk of the flange portion, near the position where the flange portion fits into the notch portion. Winding drum.

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