Drum replacing device

Abstract

To provide a drum replacing device that enables a worker to replace a drum safely and with a small burden.SOLUTION: A drum replacing device has: a plurality of horizontally arranged holding parts inserted into through holes of a drum around which a long member is wound so as to hold the drum; and a support part for supporting the plurality of holding parts so as to be rotatable in a horizontal direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a drum changing device. [Background technology]

[0002] Conventionally, when cutting long materials such as electric wires and cables using a cutting machine, the long materials of the desired length are wound around a drum installed in the cutting machine. The drum on which the long materials of the desired length are wound is removed from the cutting machine and stored and transported. Drums of various sizes are prepared according to the length of the long materials to be wound.

[0003] Patent Document 1 describes a winding machine (cutting machine) that winds a synthetic yarn (long member) around a winding tube (drum) to produce a bobbin, a device that is arranged to the side of the winding machine and is used to remove the bobbin from the winding machine, a tube supplying device that is arranged above the device for removing the bobbin and is used to supply the tube, and a bobbin transporting device that is arranged on the opposite side of the device for removing the bobbin from the winding machine and is used to transport the bobbin.

[0004] The device for removing the bobbin has a plurality of pivot arms and a holder for pivotably holding the plurality of pivot arms. The pivot axes of the plurality of pivot arms are arranged horizontally, and the plurality of pivot arms rotate along a vertical plane. The device for removing the bobbin moves the bobbin on which the synthetic yarn has been wound from the winding machine to the pivot arm. The pivot arm is then rotated 180° to move the bobbin from the pivot arm to the bobbin transport device. The pivot arm from which the bobbin has been removed is then rotated 90° toward the tube supply device, and the tube supplied from the tube supply device is attached to the pivot arm, and the pivot arm is then further rotated 90° toward the winding machine. The tube is then moved to the winding machine, and the synthetic yarn is wound onto the tube. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Special Publication No. 2009-529472 Summary of the Invention [Problem to be solved by the invention]

[0006] The device described in Patent Document 1 is not suitable for winding a relatively thick and heavy long member such as a cable onto a large drum, rather than a thin and lightweight long member such as a synthetic thread. On the other hand, when an operator attaches such a large drum to the winding machine, the operator needs to lift the drum, which places a heavy burden on the operator.

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a drum changing device that enables an operator to change a drum safely and with a small burden. [Means for solving the problem]

[0008] In order to solve the above problem, according to one aspect of the present invention, A plurality of holding portions arranged in a horizontal direction are inserted into through holes of a drum around which a long member is wound, and are used to hold the drum; A support portion that supports the plurality of holding portions so as to be rotatable in a horizontal direction; A drum changing device is provided, comprising: Effect of the Invention

[0009] According to the present invention, there is provided a drum replacement device that allows an operator to replace a drum safely and with less burden. [Brief description of the drawings]

[0010] [Figure 1] 1A and 1B are diagrams showing a configuration of a drum in one embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of the drum changing device. [Diagram 3] 3A and 3B are diagrams showing the configuration around the fixed portion. [Figure 4] 4A to 4F are diagrams for explaining how to use the drum changing device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, a drum changing device according to an embodiment of the present invention will be described with reference to the attached drawings. The drum changing device of this embodiment is used to remove a drum around which a long member is wound from a cutting machine for cutting long members such as electric wires and cables, and to install an empty drum around which the long member is wound. However, the drum changing device of the present invention is not limited to the embodiment shown below. Also, the attached drawings are schematic diagrams and do not show actual dimensions.

[0012] [Drum configuration] First, the drum to be replaced will be described. Fig. 1A is a front view of drum 10, and Fig. 1B is a left side view of drum 10.

[0013] The configuration of drum 10 is not particularly limited as long as it has through-hole 16 and can wind a long member such as an electric wire or cable. As shown in Figures 1A and 1B, in this embodiment, drum 10 is a parasol drum having a body 11, a first flange 12, a second flange 13, a protrusion 14, a third flange 15, and through-hole 16.

[0014] In this embodiment, the body 11 has a cylindrical shape. A first flange 12 is fixed to one end of the body 11. The body 11 also has a second flange 13 configured to be movable between the first flange 12 and the other end of the body 11. This makes it possible to adjust the distance between the first flange 12 and the second flange 13, and the distance between the second flange 13 and the third flange 15, depending on the length of the elongated member to be cut.

[0015] In this embodiment, the protruding portion 14 has a cylindrical shape. The protruding portion 14 is disposed at the other end of the body 11. A plurality of third flanges 15 are supported by the protruding portion 14. The third flange 15 is formed in a long and thin plate shape, and its base end is supported by the protruding portion 14. The third flange 15 is configured to be movable so as to be parallel to the first flange 12 and the second flange 13 (a state in which the third flange 15 functions as a flange) and parallel to the axis of the body 11 (a state in which the third flange 15 does not function as a flange) (FIG. 1B). The number of the third flanges 15 is not particularly limited as long as the long member wound around the body 11 between the second flange 13 and the third flange 15 does not come off from the body 11. In this embodiment, the number of the third flanges 15 is six. This allows the cut long member to be removed from the drum 10 in a wound state.

[0016] The through hole 16 is disposed penetrating the center of the body 11 and the protruding portion 14. When the drum exchanging device 20 is disposed in the through hole 16, the holding portion main body 31 of the holding portion 21 is inserted into the through hole 16, and when the drum exchanging device 20 is disposed in the cutting machine 100, the support rod 101 is inserted into the through hole 16 (details will be described later).

[0017] Here, a method of using the drum 10 will be described. When the drum 10 is used to store a long member, the long member is wound between the first flange 12 and the second flange 13. The drum 10 is then used for storage and transportation in this state. On the other hand, when the drum 10 is used only to cut the long member, the long member is wound between the second flange 13 and the third flange 15. Next, the third flange 15 is moved so as to be parallel to the axis of the body 11, and the wound long member is removed from the drum 10.

[0018] [Configuration of drum changer] Fig. 2 is a side view of the drum exchanging device 20. Fig. 3A is a partially enlarged perspective view of the fixing portion 26 and its surroundings, and Fig. 3B is a front view of the fixing portion 26.

[0019] 2 and 3A and 3B, the drum changing device 20 has a plurality of holding parts 21 and a support part 22. The drum changing device 20 may include a configuration other than the above-mentioned configuration. In the present embodiment, the drum changing device 20 further has a lifting part 23, a lifting guide 24, casters 25, and a fixing part 26 in addition to the above-mentioned configuration.

[0020] The multiple holding parts 21 are arranged in the horizontal direction and are configured to be inserted into the through holes of the drum 10 to hold the drum 10. More specifically, in this embodiment, the holding parts 21 hold the drum 10 so that the first flange and the second flange 13 of the drum 10 are aligned vertically (so that the through holes 16 of the drum 10 are horizontal). The number of holding parts 21 may be multiple and may be equal to or greater than the number of drums 10 to be held. In this embodiment, the number of holding parts 21 is two. It is preferable that the holding parts 21 are arranged so as to be equally spaced in the circumferential direction with respect to the support part 22 when the drum changing device 20 is viewed in a plane. This makes it possible to further prevent the holding parts 21 and the support part 22 from tilting. In this embodiment, the two holding parts 21 are arranged at positions (opposite sides) at 180° with respect to the support part 22 when the drum changing device 20 is viewed in a plane. That is, in this embodiment, the two holding parts 21 are arranged so as to be located on the same straight line. The configuration of the holding parts 21 is not particularly limited as long as it can exert the above-mentioned function. In this embodiment, the holder 21 has a holder body 31 and a separation prevention pin 32 .

[0021] The holding unit body 31 is inserted into the through hole 16 of the drum 10 to hold the drum 10. The holding unit body 31 is formed in a rod shape that is longer than the length of the through hole 16 of the drum 10. A base end of the holding unit body 31 is supported by the support portion 22, and an insertion hole 33 for inserting the separation prevention pin 32 is disposed at a tip end of the holding unit body 31. In this embodiment, the holding unit body 31 is supported by the support portion 22 so as to be horizontal.

[0022] The anti-detachment pin 32 prevents the drum 10 from being detached from the holding body 31. The anti-detachment pin 32 prevents the drum 10 from being detached from the holding body 31 by being inserted into the insertion hole 33 when the drum 10 is placed in the holding body 31. The anti-detachment pin 32 is removed when the drum 10 is removed from the holding body 31.

[0023] The support section 22 supports the multiple holding sections 21 so that they can rotate in the horizontal direction. The configuration of the support section 22 is not particularly limited as long as it can perform the above-mentioned function. For example, the support section 22 may support the multiple holding sections 21 so that only the multiple holding sections 21 rotate without rotating itself, or may support the multiple holding sections 21 so that the multiple holding sections 21 rotate when at least a part of the support section 22 rotates relative to the lift section 23. In this embodiment, the support section 22 is formed in a rod shape. The base end of the support section 22 is fixed to the upper plate 41 of the lift section 23 via a fixing plate 34, and the tip end of the support section 22 supports the multiple holding sections 21 so that they can rotate in the horizontal direction.

[0024] The lifting unit 23 lifts and lowers the multiple holding units 21 and support units 22. The configuration of the lifting unit 23 is not particularly limited as long as it can perform the above-mentioned functions. In this embodiment, the lifting unit 23 has an upper plate 41, a lower plate 42, multiple arms 43, a hydraulic unit 44, a foot pedal 45, and a release lever (not shown).

[0025] One end of each of the multiple (e.g., four) arms 43 is rotatably attached to either the upper plate 41 or the lower plate 42, and the other end is rotatably and slidably attached to the other of the upper plate 41 and the lower plate 42. The multiple arms 43 are connected at their longitudinal centers by a support shaft (not shown).

[0026] The hydraulic unit 44, the foot pedal 45, and the release lever have the same configuration as a general hydraulic jack. When the foot pedal is operated, the hydraulic cylinder acts on the support shaft to raise the upper plate 41, and slides the other end of the arm 43. On the other hand, when the release lever is operated, the hydraulic cylinder acts on the support shaft to lower the upper plate 41, and slides the other end of the arm 43. However, the lifting unit 23 may be an electric lifting mechanism or the like. In this embodiment, the lifting unit 23 is of a manual type from the viewpoint of reducing the weight of the drum changing device 20.

[0027] The lifting guide 24 prevents the multiple holding parts 21 and the support parts 22 from tilting, and guides the lifting and lowering of the support parts 22 by the lifting part 23 to be vertical. The number of lifting and lowering guides 24 is not particularly limited. In this embodiment, the number of lifting and lowering guides 24 is four, and they are arranged on both sides of the lifting part 23. The configuration of the lifting and lowering guide 24 is not particularly limited as long as it can perform the above-mentioned functions. In this embodiment, the lifting and lowering guide 24 has a first fixed plate 51, a linear bush 52, a guide rod 53, a connecting plate 54, and a second fixed plate 55.

[0028] The first fixed plate 51 is fixed to the lower surface of the upper plate 41, and a pair of linear bushes 52 are fixed thereto. The second fixed plate 55 is fixed to the lower plate 42, and one end of a pair of guide rods 53 is fixed to the upper surface of the second fixed plate 55. The pair of guide rods 53 (linear shafts) are inserted into holes 56 formed in the linear bushes 52. The other end of each of the pair of guide rods 53 is fixed by a connecting plate 54 so that the pair of guide rods 53 are aligned in the vertical direction. When the upper plate 41 moves up and down relative to the lower plate 42, the linear bushes 52 move up and down along the guide rods 53. At this time, since the pair of linear bushes 52 are guided by the pair of guide rods 53, the upper plate 41 does not tilt.

[0029] The casters 25 are fixed directly or indirectly to the lifting unit 23, and facilitate the movement of the drum exchanging device 20. In this embodiment, the casters 25 are fixed to the four corners of the lower surface of the lower plate 42, one by one. The structure of the casters 25 is not particularly limited as long as it can perform the above-mentioned function. In this embodiment, the casters 25 only need to have wheels 61, and may further have stoppers 62 for suppressing the rotation of the wheels 61 or other mechanisms (not shown). The casters 25 may be known casters. In addition, the number and size of the casters 25 are not particularly limited, and are appropriately selected according to the weight, structure, etc. of the drum exchanging device 20.

[0030] The fixing part 26 is a configuration for fixing the drum changing device 20 to the floor. The fixing part 26 may be directly or indirectly fixed to the lifting part 23. In this embodiment, the fixing part 26 is indirectly fixed to the lifting part 23 via the second fixing plate 55. The number of the fixing parts 26 may be one or more. The number of the fixing parts 26 is preferably more than one. In this embodiment, the number of the fixing parts 26 is two. The configuration of the fixing part 26 is not particularly limited as long as it can perform the above-mentioned functions. In this embodiment, the fixing part 26 has a fixing part main body 63, a slide rod 64, a spring 65, and a lever 66.

[0031] The slide bar 64 is inserted into the first slide hole 67 of the fixed part body 63, the spring 65, and the second slide hole 68 of the lever 66, with the spring 65 disposed between the fixed part body 63 and the lever 66. As shown in FIG. 3B, when the drum changing device 20 is fixed to the floor, the lever 66 is first lowered to release the engagement between the second slide hole 68 and the slide bar 64. This allows the slide bar 64 to be raised and lowered. Next, while keeping the lever 66 lowered, the slide bar 64 is lowered until it contacts the floor. Finally, the lever 66 is released. At this time, the lever 66 is biased by the spring 65 in the opposite direction to the floor, so that the second slide hole 68 of the lever 66 and the slide bar 64 engage with each other. As a result, the slide bar 64 is fixed in a state of contact with the floor, so that the drum changing device 20 can be fixed to the floor.

[0032] [How to use the drum changer] Next, a method of using the drum exchanging device 20 will be described. Here, a case will be described in which an empty drum 10 (drum 10A) arranged in one of the holding parts 21 is replaced with a drum 10 (drum 10B) on which a long member is wound by the cutting machine 100. Figures 4A to 4F are diagrams for explaining a method of using the drum exchanging device 20. Figures 4A, 4C, and 4E are schematic diagrams when viewed from above, and Figures 4B, 4D, and 4F are schematic diagrams when viewed from the front. Note that the second flange 13 is omitted in Figures 4A to 4F.

[0033] 4A and 4B, the drum exchanging device 20 is moved by the casters 25 and fixed by the fixing parts 26 while adjusting the height of the holding part 21 by the lifting part 23 so that the holding part main body 31 of the drum exchanging device 20 on which the drum 10 is not placed and the support rod 101 of the cutting machine 100 are aligned in the same straight line. Then, the drum 10B around which the long member is wound is slid into the holding part main body 31. Next, the separation prevention pin 32 is inserted into the insertion hole 33. This allows the drum 10B to be removed from the cutting machine 100 and fixed to the drum exchanging device 20.

[0034] 4C and 4D, the holder body 31 is rotated 180° horizontally by the support 22 so as to exchange the positions of the drum 10A and the drum 10B. At this time, the weight of the empty drum 10A is different from that of the drum 10B on which the long member is wound, but the presence of the lift guide 24 allows the holder 21 to maintain a horizontally disposed state. Therefore, the holder body 31 on which the empty drum 10A is disposed and the support rod 101 are positioned on the same straight line.

[0035] 4E and 4F, after removing the anti-detachment pin 32 from the insertion hole 33, the drum 10A is slid from the holding body 31 onto the support rod 101. This allows the empty drum 10A to be attached to the cutting machine 100.

[0036] Finally, after releasing the fixing portion 26, the casters 25 are used to transport the product to a predetermined position.

[0037] (effect) According to the drum replacement device 20 of the present embodiment, an operator can replace the drum 10 without lifting the drum 10. Therefore, the burden on the operator when replacing the drum 10 is reduced. [Industrial Applicability]

[0038] The drum changing device of the present invention is extremely useful, for example, when cutting long members such as tubes and electric wires. [Explanation of symbols]

[0039] 10, 10A, 10B drums 11. Torso 12 First flange 13 Second flange 14 Convex part 15 Third flange 16 Through hole 20 Drum change device 21 Holding part 22 Support part 23 Lifting section 24 Lifting guide 25 Caster 26 Fixed part 31 Holding part body 32 Anti-detachment pin 33 Insertion hole 34 Fixed plate 41 Upper Board 42 Lower plate 43 Arm 44 Hydraulic section 45 Foot Pedal 51 1st fixed plate 52 Linear bushing 53 Guide rod 54 Connecting plate 55 Second fixing plate 56 holes 61 wheels 62 Stopper 63 Fixed part body 64 Slide bar 65 Spring 66 Lever 67 First slide hole 68 Second slide hole 100 cutting machine 101 Support rod

Claims

1. A plurality of holding portions arranged in a horizontal direction are inserted into through holes of a drum around which a long member is wound, and are used to hold the drum; A support portion that supports the plurality of holding portions so as to be rotatable in a horizontal direction; The drum changing device has

2. In the drum changing device of claim 1, A drum changing device, characterized in that each of the plurality of holding portions has a separation prevention pin for preventing the drum from separating from the holding portion.

3. In the drum changing device of claim 1, The drum changing device further comprises a lifting section for lifting and lowering the plurality of holding sections and the support section.

4. In the drum changing device of claim 3, a lifting guide for preventing tilting of the plurality of holding portions and the support portion and for guiding the lifting of the support portion by the lifting portion in a vertical direction.

5. In the drum changing device of claim 3, The drum changing device further comprises a plurality of casters fixed directly or indirectly to the lifting section.

6. In the drum changing device of claim 5, A drum changing device further comprising a fixing part fixed directly or indirectly to the lifting part for fixing the lifting part to a floor.

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