Coil arrangement and coil placement

Abstract

To provide a coil arrangement method and a coil placement place for facilitating conveyance of a coil using a forklift.SOLUTION: A coil 2 formed by winding a belt-like body is arranged on a line pattern 41 of a planar coil placement place 31. The line pattern 41 has an H shape in plain view of the coil placement place 31, and the coil 2 is placed with a radial direction 7 of the coil 2 and a line direction 45 of the line pattern 41 aligned with each other.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a coil arrangement method and a coil storage location. [Background technology]

[0002] Conventionally, a coil has been known that is formed by winding a strip (e.g., a metal strip such as a steel strip) in one direction into a roll shape. The coil has a hole in the center that penetrates from one side to the other side.

[0003] When manufacturing steel products, coils are sometimes temporarily stored (placed) in a flat coil storage area set up outdoors or elsewhere to control the number of coils to be processed in the processes before and after. Typically, the later processes can process fewer coils at one time, so there is always a certain number of coils placed in the coil storage area.

[0004] Coil storage areas usually have pallets (coil stands) that support the coils. The coils are supported on the coil stands with their side faces (the faces with holes in the center) facing vertically. At this time, part of the outer periphery of the coil comes into contact with the coil stands.

[0005] When the coil supported on the coil stand is transported from the coil storage area to another area (or from another area to the coil storage area), a forklift is used. Patent Document 1 discloses a technique for transporting coils using hooks suspended from the forks of a forklift. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 10-218593 Summary of the Invention [Problem to be solved by the invention]

[0007] The technology described in Patent Document 1 may not be applicable to coils with a large diameter. Therefore, a forklift with a thick round bar instead of the forks is used. Specifically, the round bar is inserted into the hole of the coil supported by the coil stand, and the round bar is lifted up together with the coil. To place the coil (supported by the coil cradle), the same forklift is used to perform the reverse motion. In this way, even large diameter coils can be transported using a forklift. Therefore, in the coil storage area, there needs to be space on the side of the coil (the side with the hole) large enough for a forklift to enter.

[0008] The present invention has been made in consideration of the above points, and has an object to provide a coil arrangement method and a coil storage location that allow the coils to be easily transported using a forklift. [Means for solving the problem]

[0009] The present inventors have found that the above object can be achieved by employing the following configuration, and have completed the present invention.

[0010] That is, the present invention provides the following [1] to

[13] . [1] A method for arranging a coil formed by winding a strip-shaped material on a line pattern of a planar coil storage area, wherein the line pattern is H-shaped when the coil storage area is viewed in a plane, and the coil is arranged such that the radial direction of the coil and the linear direction of the line pattern are aligned. [2] A coil arrangement method as described in [1] above, in which, when the coil placement area is viewed in a plane, two of the line patterns are adjacent to each other in the horizontal direction, and the right vertical line of the line pattern on the left side and the left vertical line of the line pattern on the right side are integrated. [3] A coil arrangement method as described in [1] or [2] above, wherein, when the coil placement area is viewed in a plane, two of the line patterns are adjacent to each other in the horizontal direction, and the right vertical line of the line pattern on the left side is spaced apart from the left vertical line of the line pattern on the right side. [4] A coil arrangement method as described in [2] or [3] above, wherein when the coil placement area is viewed in a plane, the coil placement area is rectangular with a short side in the vertical direction and a long side in the horizontal direction, and there is only one line pattern in the vertical direction of the coil placement area. [5] The coil arrangement method according to any one of [1] to [4] above, wherein the strip is a metal strip. [6] The coil arrangement method according to any one of [1] to [5] above, wherein the strip is a steel strip. [7] A coil arrangement method according to any one of [1] to [6] above, in which a coil stand for supporting the coil is installed on the line pattern, and the coil is supported by the coil stand. [8] A planar coil storage area having a line pattern and a coil stand that supports a coil formed by winding a strip-shaped material on the line pattern, wherein the line pattern is H-shaped when the coil storage area is viewed in a plan view, and the coil stand is installed so that the coil is supported in an orientation where the radial direction of the coil and the linear direction of the line pattern are aligned. [9] A coil placement area as described in [8] above, in which, when the coil placement area is viewed in a plane, two of the line patterns are adjacent to each other in the horizontal direction, and the right vertical line of the line pattern on the left side and the left vertical line of the line pattern on the right side are integrated.

[10] A coil placement area as described in [8] or [9] above, wherein, when the coil placement area is viewed in a plane, two of the line patterns are adjacent to each other in the horizontal direction, and the right vertical line of the line pattern on the left side is spaced apart from the left vertical line of the line pattern on the right side.

[11] A coil placing area as described in [9] or

[10] above, wherein when the coil placing area is viewed in a plane, the coil placing area is rectangular with a short side in the vertical direction and a long side in the horizontal direction, and there is only one line pattern in the vertical direction of the coil placing area.

[12] The coil storage location according to any one of [8] to

[11] above, wherein the strip is a metal strip.

[13] The coil storage location according to any one of [8] to

[12] above, wherein the strip is a steel strip. Effect of the Invention

[0011] According to the present invention, it is possible to provide a coil arrangement method and a coil storage location that allow the coil to be easily transported using a forklift. [Brief description of the drawings]

[0012] [Figure 1] FIG. [Diagram 2] FIG. 2 is a side view showing a coil supported by a coil stand. [Diagram 3] FIG. [Figure 4] FIG. 2 is a plan view showing a coil placement site in the first embodiment. [Diagram 5] FIG. 11 is a plan view showing a coil placement site of the second embodiment. [Figure 6] FIG. 13 is a plan view showing a coil placement area of ​​a comparative example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] <Coil and coil stand> FIG. 1 is a perspective view showing the coil 2. As shown in FIG. The coil 2 is a roll formed by winding the strip 1 in one direction many times. The material of the belt-like object 1 is not particularly limited, and examples thereof include metal, resin, paper, etc., among which metals such as aluminum and steel are preferable, and steel is more preferable. That is, as the belt-like object 1, a metal belt is preferable, and a steel belt is more preferable.

[0014] The coil 2 has a hole 4 at its center, penetrating from one side surface 3a to the other side surface 3b (not shown in FIG. 1). The side surfaces 3a and 3b of the coil 2 are collectively referred to as "side surfaces 3." In other words, the hole 4 is formed in the side surface 3 of the coil 2. The outer peripheral surface 5 of the coil 2 is restrained by a band 6 to prevent the strip 1 from unraveling.

[0015] Fig. 2 is a side view showing the coil 2 supported by the coil stand 11. In Fig. 2, the band 6 is omitted (this is the same in the other figures). 2, the coil 2 is supported by the coil stand 11 with the side surface 3 oriented in a vertical plane. In other words, the coil 2 is not supported with the side surface 3 (side surface 3a or side surface 3b) oriented in a horizontal plane, for example. 2 is, for example, a member having a recessed shape into which part of the outer circumferential surface 5 of the coil 2 fits. The coil 2 is supported (held in position) by the coil stand 11 by fitting into this recessed shape. However, the coil stand 11 is not particularly limited as long as it has a structure capable of holding the coil 2 in position so as not to roll, and the material thereof is also not particularly limited.

[0016] Typically, the diameter of the coil 2 is greater than the width of the strip 1 . Therefore, the coil stand 11 supporting the coil 2 has a rectangular shape when viewed from above (when the coil placement area 31 is viewed from above) as shown in FIG. 4 described later.

[0017] <forklift> FIG. 3 is a side view showing the forklift 21. As shown in FIG. 3 is a counterbalanced forklift 21, which is provided with a balance weight 23 at the rear of a vehicle body 22, as well as a head guard 24, a mast 25, a lift cylinder 26, and a tilt cylinder 27. A backrest 28 is attached to the mast 25 so as to be movable up and down. Normally, a pair of forks (not shown) are attached to the backrest 28, but in the forklift 21 shown in FIG. 3, a single thick round bar 29 is attached instead. The diameter of the round bar 29 is smaller than the diameter of the hole 4 of the coil 2. Therefore, the round bar 29 can be inserted into the hole 4 of the coil 2. The material of the round bar 29 is not particularly limited, and may be, for example, the same material as that of a fork.

[0018] <Coil storage area> In the following, a first embodiment will be described with reference to FIG. 4, and then a second embodiment will be described with reference to FIG.

[0019] First Embodiment FIG. 4 is a plan view showing the coil storage area 31 of the first embodiment. A plurality of coils 2 are arranged in a planar coil storage area 31. The coil storage area 31 is provided outdoors, but may be provided indoors. More specifically, the coil 2 is arranged on the line pattern 41 of the coil storage area 31. That is, a plurality of coils 2 are arranged along the line pattern 41. The line pattern 41 may be an imaginary line and does not need to be a solid line actually drawn on the coil storage area 31. The line pattern 41 shown by a dashed line in Fig. 4 is an imaginary line. 4, the line pattern 41 is H-shaped when the coil storage space 31 is viewed in a plan view. More specifically, the H-shaped line pattern 41 is made up of a left vertical line 42, a right vertical line 43, and a horizontal line 44. In the coil storage area 31, a recessed area 34 into which the forklift 21 can enter is formed by a left vertical line 42, a right vertical line 43 and a horizontal line 44 of the H-shaped line pattern 41.

[0020] The coil 2 is disposed such that a radial direction 7 of the coil 2 coincides with a line direction 45 of the line pattern 41. The radial direction 7 and the line direction 45 are indicated by arrows in Fig. 4 (as in other figures). The line direction 45 of the line pattern 41 is vertical (up and down in FIG. 4) for the left vertical line 42 or right vertical line 43, and horizontal (left and right in FIG. 4) for the horizontal line 44.

[0021] In practice, a coil stand 11 is installed on the line pattern 41 of the coil storage area 31, and the coil 2 is placed on and supported by the coil stand 11. The coil stand 11 is installed so that the radial direction 7 of the coil 2 it supports coincides with the line direction 45 of the line pattern 41. In other words, when the coil storage area 31 is viewed from above, the rectangular coil stand 11 is installed so that its short side faces the short side of another adjacent coil stand 11.

[0022] There are no obstacles or the like in the areas facing both side surfaces 3 (side surface 3a or side surface 3b) of coil 2 arranged in this manner. Therefore, the forklift 21 can approach the coil 2 from either side, 3a or 3b, insert the round rod 29 into the hole 4, and lift up the coil 2. Also, the forklift 21 can approach the coil stand 11 and perform the reverse operation to place (support) the coil 2 on the coil stand 11. That is, the coil 2 can be easily transported using a forklift 21 .

[0023] Incidentally, the coil 2 formed by winding the strip 1 in one direction has a winding direction. Usually, the coil 2 is placed in an empty space (coil stand 11) in the coil storage area 31 without considering the winding direction of the coil 2. For this reason, the winding direction of the coil 2 placed in the coil storage area 31 is random. When such coils 2 are carried out from the coil storage area 31 using the forklift 21, they may be carried out in a specific winding direction in response to a request from a customer. In this case, the forklift 21 is brought close to the area facing one side surface 3a of the coil 2 to be carried out. Then, if the winding direction of the coil 2 as viewed from the side surface 3a is the desired winding direction (for example, "counterclockwise"), the round bar 29 of the forklift 21 is inserted into the hole 4 from the side surface 3a, and the coil 2 is carried out. On the other hand, there are cases where the winding direction as viewed from side 3a of coil 2 is "clockwise" and not the desired "counterclockwise." In that case, forklift 21 is moved to an area facing the other side 3b of coil 2. Since the winding direction as viewed from side 3b is the desired "counterclockwise," round bar 29 is inserted into hole 4 from side 3b, and coil 2 is removed. In this way, the coils 2 can be carried out from the coil storage area 31 with the coils 2 aligned in a specific winding direction. In the first embodiment, the forklift 21 can approach either the side surface 3a or the side surface 3b of the coil 2, so that the coil 2 can be easily carried out in a desired winding direction.

[0024] Second Embodiment 5 is a plan view showing a coil storage 31 according to the second embodiment. The same parts as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof will be omitted. In the second embodiment, as shown in FIG. 5, when the coil placement area 31 is viewed in plan, four line patterns 41 are present adjacent to one another in the horizontal direction (the left-right direction in FIG. 5). The four parallel line patterns 41 are referred to as line pattern 41a, line pattern 41b, line pattern 41c, and line pattern 41d, in that order from the left.

[0025] The right vertical line 43 of the H-shaped line pattern 41a and the left vertical line 42 of the H-shaped line pattern 41b are integrated to form an integrated vertical line 46. Similarly, the right vertical line 43 of the H-shaped line pattern 41c and the left vertical line 42 of the H-shaped line pattern 41d are integrated to form an integrated vertical line 46.

[0026] On the other hand, the right vertical line 43 of the line pattern 41b and the left vertical line 42 of the line pattern 41c are spaced apart from each other, and a passage (internal passage 32) through which the forklift 21 can freely pass is formed between them. The width of the internal passage 32 (the distance in the left-right direction in FIG. 5) is, for example, the width of one forklift 21. Furthermore, in the coil storage area 31, a passage (external passage 33) through which the forklift 21 can freely pass is provided around the four line patterns 41 as well.

[0027] When viewed from above, the coil storage space 31 has a rectangular shape with a short side in the vertical direction (up and down direction in FIG. 5) and a long side in the horizontal direction (left and right direction in FIG. 5). In the second embodiment, four line patterns 41 are present, but only one line pattern 41 exists in the vertical direction of the coil placement area 31.

[0028] In the second embodiment as well, the coil 2 is arranged such that the radial direction 7 of the coil 2 and the line direction 45 of the line pattern 41 coincide with each other. For this reason, there are no obstacles or the like in the area facing side surface 3 of coil 2, and forklift 21 can approach coil 2 from either side surface 3a or side surface 3b, insert round rod 29 into hole 4, and lift up coil 2. In other words, coil 2 can be easily transported using forklift 21. Also in the second embodiment, since the forklift 21 can approach either the side surface 3a or the side surface 3b of the coil 2, the coil 2 can be easily transported in a desired winding direction.

[0029] In the second embodiment, the two line patterns 41 are integrated to form the integrated vertical line 46, but the number of integrated line patterns 41 is not limited to two. For example, three line patterns 41 (for example, line pattern 41a, line pattern 41b, and line pattern 41c) may be integrated together. However, if the number of integrated line patterns 41 is too large, the number of internal passages 32 through which the forklift 21 can pass will be reduced, and it may be difficult to move from one line pattern 41 to another line pattern 41. For this reason, the number of integrated line patterns 41 is preferably three or less, and more preferably two or less.

[0030] Comparative form 6 is a plan view showing a coil storage 51 of a comparative embodiment. The same parts as those in the first and second embodiments described above are indicated by the same reference numerals, and the description thereof will be omitted. The shape and size of the coil storage space 51 of the comparative example are the same as those of the coil storage space 31 of the second embodiment (see FIG. 5).

[0031] In the comparative embodiment, as in the first and second embodiments described above, the coil 2 is arranged along the line pattern 61 of the coil storage area 51. More specifically, a coil stand 11 (not shown in FIG. 6) is placed on the line pattern 61, and the coil 2 is supported by the coil stand 11. However, as shown in FIG. 6, the line pattern 61 of the comparative example is U-shaped when the coil placement area 51 is viewed in a plane, and consists of two vertical lines 62 and 63, and a horizontal line 64 connecting the ends of these lines. In the coil storage area 51, a U-shaped line pattern 61 forms a recessed area 53 into which the forklift 21 can enter.

[0032] Coil storage area 51 has ten line patterns 61. More specifically, it has an upper section consisting of five line patterns 61 and a lower section consisting of another five line patterns 61. Between the upper and lower sections is an aisle (central aisle 52) for forklift 21. Forklift 21 can enter coil storage area 51 only through the openings (openings 54 and 55) at both ends of central aisle 52.

[0033] Typically, two line patterns 61 located at the upper left in FIG. 6 and adjacent to each other in the horizontal direction are referred to as line pattern 61a and line pattern 61b, starting from the left. The vertical line 63 of the line pattern 61a and the vertical line 62 of the line pattern 61b are not integrated but exist side by side, and the same is true for the other two adjacent line patterns 61.

[0034] Comparison of the first and second embodiments with the comparative embodiment (Comparison 1) In the coil placement area 51 of the comparative example, attention will be focused on one coil 2 (also referred to as "coil 2i" for convenience) arranged on the vertical line 63 of the line pattern 61a. In the area facing the side surface 3b of the coil 2i, another coil 2 (or a coil stand 11) is present, so that the forklift 21 cannot approach. Therefore, in order to carry out the coil 2i from the coil storage area 51, it is necessary to bring the forklift 21 close to the area facing the opposite side surface 3a. At this time, as described above, the winding direction of the coil 2i as viewed from the side surface 3a may not be the desired winding direction. In that case, since the forklift 21 cannot approach the area on the opposite side (side surface 3b), the round rod 29 is temporarily inserted into the hole 4 from the side surface 3a, the coil 2i is lifted and transported, and temporarily placed in another location. Then, the forklift 21 goes around to the opposite side (side surface 3b) of the temporarily placed coil 2i, inserts the round rod 29 into the hole 4 from the side surface 3b again, and carries the coil 2i out. Thus, in the comparative example, it may be very complicated to carry out the coil 2 in the desired winding direction. In contrast to this, in the first and second embodiments, as described above, the forklift 21 can approach either side 3a or 3b of the coil 2, making it easy to carry out the coil 2 in a desired winding direction.

[0035] (Comparison 2) In the comparative coil storage area 51, the width of the central passage 52 (the vertical distance in FIG. 6) is the width of one forklift 21. For this reason, multiple forklifts 21 cannot pass each other on the central passage 52, and therefore only one forklift can be used at a time. In addition, even if the width of central aisle 52 is set to be sufficient to allow a plurality of forklifts 21 to pass each other, central aisle 52 is the only aisle through which forklifts 21 can pass, so the traffic lines of forklifts 21 are likely to overlap. For example, if the traffic lines of two forklifts 21 overlap, one of them will need to enter a nearby recessed area 53 and retreat until the other has passed. In contrast, in the second embodiment, not only the internal passage 32 but also the external passage 33 are provided as passages through which the forklifts 21 can pass, so that even if there are multiple forklifts 21, their traffic lines are unlikely to overlap.

[0036] (Comparison 3) In the comparative coil storage area 51, the only passage through which the forklift 21 can pass is the central passage 52. For this reason, when moving from the recessed area 53 to another coil storage area (not shown), the forklift 21 must pass through the central passage 52 and exit through the opening 54 or 55. In other words, since the forklift 21 must always pass through the central passage 52, the travel distance of the forklift 21 becomes longer, and time is likely to be wasted in transporting the coils 2. In contrast, in the second embodiment, when moving from the recessed area 34 to another coil storage area (not shown), it is only necessary to exit from the recessed area 34 to the surrounding external passage 33. This shortens the travel distance of the forklift 21, allowing the coil 2 to be transported efficiently.

[0037] (Comparison 4) The number of coils 2 that can be placed in the coil storage space 31 (second embodiment) is smaller than the number of coils 2 that can be placed in the coil storage space 51 (comparative embodiment) of the same size. However, the coils 2 arranged in the coil storage area 31 correspond to inventory. From the viewpoint of inventory management, it is better to have less inventory. Therefore, the number of coils 2 that can be arranged in the coil storage area 31 may be small. As a temporary storage area for adjusting the number of coils 2 to be brought in and the number of coils 2 to be taken out, it is preferable that old coils 2 do not accumulate and that the coils 2 can be easily removed. As described above, the coil storage area 31 (second embodiment) allows the coils 2 to be removed more easily than the coil storage area 51 (comparative embodiment), so even if the number of coils 2 that can be placed is small, the temporary storage capacity is not reduced. [Explanation of symbols]

[0038] 1: Strip 2, 2i: Coil 3, 3a, 3b: Side 4: Hole 5: Outer surface 6: Band 7: Radial direction 11: Coil stand 21: Forklift 22: Body 23: Balance weight 24: Head guard 25: Mast 26: Lift cylinder 27: Tilt cylinder 28: Backrest 31: Coil storage area 32: Internal passage 33:External passage 34: Concave area 41, 41a, 41b, 41c, 41d: Line pattern 42: Left vertical line 43: Right vertical line 44: Horizontal line 45: Line direction 46: Integrated vertical line 51: Coil storage area (comparison form) 52: Central aisle 53: Concave area 54:Aperture 55:Aperture 61, 62a, 62b: Line pattern (comparison form) 62: Vertical line 63: Vertical line 64: Horizontal line

Claims

1. A method for arranging a coil formed by winding a strip on a line pattern of a planar coil placement area, comprising the steps of: The line pattern is H-shaped when the coil placement area is viewed in a plan view, A coil arrangement method, comprising: arranging the coil such that a radial direction of the coil coincides with a line direction of the line pattern.

2. When the coil placement area is viewed from above, Two of the line patterns are adjacent to each other in the horizontal direction, 2. The coil arrangement method according to claim 1, wherein a right vertical line of the line pattern on the left side and a left vertical line of the line pattern on the right side are integrated.

3. When the coil placement area is viewed from above, Two of the line patterns are adjacent to each other in the horizontal direction, 2. The coil arrangement method according to claim 1, wherein a right vertical line of the line pattern on the left side and a left vertical line of the line pattern on the right side are spaced apart from each other.

4. When the coil placement area is viewed from above, The coil storage area is rectangular in shape having a short side in the vertical direction and a long side in the horizontal direction, 4. The coil arrangement method according to claim 2, wherein only one of the line patterns is present in the vertical direction of the coil placement area.

5. The coil arrangement method according to any one of claims 1 to 3, wherein the strip is a metal strip.

6. The coil arrangement method according to any one of claims 1 to 3, wherein the strip is a steel strip.

7. a coil stand for supporting the coil is installed on the line pattern; The coil arrangement method according to any one of claims 1 to 3, wherein the coil is supported by the coil stand.

8. It has a line pattern, A flat coil placement area is provided on the line pattern, the flat coil placement area being configured to support a coil formed by winding a strip-shaped material, The line pattern is H-shaped when the coil placement area is viewed in a plan view, a coil placement area, the coil stand being installed so that the coil is supported in an orientation in which the radial direction of the coil coincides with the line direction of the line pattern;

9. When the coil placement area is viewed from above, Two of the line patterns are adjacent to each other in the horizontal direction, 9. The coil storage area according to claim 8, wherein a right vertical line of the line pattern on the left side and a left vertical line of the line pattern on the right side are integrated.

10. When the coil placement area is viewed from above, Two of the line patterns are adjacent to each other in the horizontal direction, 9. The coil placement site according to claim 8, wherein a right vertical line of the line pattern on the left side is spaced apart from a left vertical line of the line pattern on the right side.

11. When the coil placement area is viewed from above, The coil storage area is rectangular in shape having a short side in the vertical direction and a long side in the horizontal direction, 11. The coil storage area according to claim 9, wherein only one of the line patterns is present in the vertical direction of the coil storage area.

12. The coil storage facility according to any one of claims 8 to 10, wherein the strip is a metal strip.

13. The coil storage facility according to any one of claims 8 to 10, wherein the strip is a steel strip.

Images