Coil transport device

Abstract

To provide a coil carrying device capable of delivering a metal coil at a position as low as possible.SOLUTION: A coil conveying device A for conveying and lifting a metal coil B includes a plate-shaped base portion 1, a holding portion 3 for supporting the metal coil B, and a pair of drive cylinders 2 each having one end pivotally attached to the base portion 1 and the other end pivotally attached to the holding portion 3, wherein the pair of drive cylinders 2 are inclined so as to face each other, the drive cylinders 2 press each other by extending, and the drive cylinders 2 rotate to move the holding portion 3 up and down with respect to the base portion 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a coil transport device, and more particularly to a coil transport device capable of transferring a metal coil at a position as low as possible. [Background technology]

[0002] In metal processing, there is a process in which an uncoiler unrolls a rolled metal coil into a plate shape. A coil conveying device is used to convey the metal coil from a stock and carry it into the uncoiler (for example, Patent Documents 1 to 3). In these coil transport devices, the lifting mechanism for the metal coil is located below the metal coil. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4729308 [Patent Document 2] Japanese Patent Application Laid-Open No. 5300635 [Patent Document 3] Patent No. 7294270 Summary of the Invention

[0004] In metal processing, metal coils are stretched in an uncoiler, then transported to subsequent processes such as cutting and pressing, where they are processed. In this case, if the height of the processing step increases, the height of the processing equipment (device) also increases, which results in an increase in costs. Furthermore, it is desirable to keep the height of the processing process as low as possible, as this also reduces the ease of maintenance. Lowering this height is difficult due to limitations imposed by the machine structure, but it is easy to increase it. Therefore, from this viewpoint, it is also required that the coil transport device that transports the metal coil into the uncoiler receive and transfer the metal coil at as low a position as possible. [Problem to be solved by the invention]

[0005] The present invention has been developed in response to the above-mentioned problems, and has as its object to provide a coil transport device that can transfer a metal coil at a position as low as possible. [Means for solving the problem]

[0006] After extensive research, the inventors discovered that by using a pair of opposing cylinders as the structure for raising and lowering the metal coil in the coil transport device A, it is possible to make the bottom dead center of the metal coil in the coil transport device A as low as possible. The present invention is based on this finding.

[0007] The present invention resides in a coil transport device A for transporting and raising and lowering a metal coil B, which comprises a plate-shaped base 1, a holding part 3 for supporting the metal coil B, and a pair of drive cylinders 2, one end of each of which is pivotally attached to the base 1 and the other end to the holding part 3, the pair of drive cylinders 2 being inclined so as to face each other, and the drive cylinders 2 pressing against each other as they extend, causing the drive cylinders 2 to rotate and raise and lower the holding part 3 relative to the base 1.

[0008] The present invention also resides in the coil transport device A described above, which further includes a drive mechanism 5 and is movable in the horizontal direction.

[0009] The present invention also resides in the coil transport device A described above, in which the pair of drive cylinders 2 extend and retract in synchronization with each other.

[0010] The present invention also resides in the coil transport device A described above, wherein the holding portion 3 is U-shaped in side view.

[0011] The present invention also resides in the coil conveying device A described above, in which the holding unit 3 has rollers 32 provided at both ends and a belt 33 laid across the rollers 32, and the metal coil B held by the holding unit 3 can be rotated by the rotation of the rollers 32.

[0012] The present invention also resides in the coil transport device A described above, wherein the holding part 3 is provided with an attachment part 31, and the other end of the drive cylinder 2 is pivotally attached to the attachment part 31.

[0013] The present invention also resides in the coil transport device A described above, in which a pair of drive cylinders 2 extend and retract in synchronization with each other.

[0014] The present invention also resides in the coil transport device A described above, in which the drive cylinder 2 is provided on one end side of the base 1, an X-shaped auxiliary leg 4 is provided on the other end side of the base 1, and the end of the auxiliary leg 4 on the base 1 side slides along a sliding rail 41 provided on the base 1.

[0015] The present invention may also be implemented by appropriately combining the above configurations. [Effects of the Invention]

[0016] The coil transport device A of the present invention has a pair of drive cylinders 2 inclined so that they face each other, and as the drive cylinders 2 extend, they press against each other, causing the drive cylinders 2 to rotate and move the holding part 3 up and down relative to the base 1, making it possible to raise and lower the holding part 3 without placing the drive cylinders 2 below the holding part 3. Furthermore, when the pair of drive cylinders 2 are contracted and no longer in contact with each other, the bottom dead center of the holding portion 3 is reached. At this time, the tips of the drive cylinders 2 are not in contact with each other. Therefore, the coil transport device A can be raised and lowered even at the bottom dead center without the drive cylinder 2 being positioned below the holder 3. This makes it possible to load or unload the metal coil B at the lowest possible position. Furthermore, since the tips of the drive cylinders 2 are not in contact with each other at the bottom dead center, a working space can be secured for passing a band for binding the metal coil B through, cutting, winding, etc.

[0017] The coil transport device A of the present invention further includes a drive mechanism 5 and is movable in the horizontal direction, thereby making it possible to transport the metal coil B in the horizontal direction. Furthermore, since the holding part 3 can be raised and lowered by extending and contracting the drive cylinder 2, the metal coil B can be raised or lowered at the same time as being conveyed.

[0018] In the coil transport device A of the present invention, the holding unit 3 has a U-shape in side view, and therefore it is possible to prevent the metal coil B from moving in the horizontal direction. Therefore, when the metal coil B is moved up and down or horizontally, the holding portion 3 can hold the metal coil B stably.

[0019] In the coil transport device A of the present invention, the holding unit 3 is composed of rollers 32 provided at both ends and a belt 33 laid across the rollers 32, and the metal coil B held by the holding unit 3 can be rotated by the rotation of the rollers 32, making it possible to adjust the position of the metal coil B in the holding unit 3. This allows the holding unit 3 to hold the metal coil B more stably. Furthermore, since the position of the slit in the metal coil B can be adjusted by rotating the metal coil B, the uncoiler can smoothly start stretching the metal coil B.

[0020] In addition, in the present invention, an attachment portion 31 is provided on the holding portion 3, and the other end of the drive cylinder 2 is pivotally attached to the attachment portion 31, making it possible to raise and lower the holding portion 3 while maintaining its horizontal position.

[0021] Furthermore, in the present invention, the pair of drive cylinders 2 extend and retract in synchronization, so that the holding portion 3 can be raised and lowered while maintaining its horizontal position.

[0022] In the present invention, a drive cylinder 2 is provided on one end side of the base 1, an X-shaped auxiliary leg 4 is provided on the other end side of the base 1, and the end of the auxiliary leg 4 on the base 1 side slides along a sliding rail 41 provided on the base 1, making it possible to stably raise and lower the metal coil B even when the weight of the metal coil B is large. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is an explanatory diagram showing a coil transport device. [Figure 2] FIG. 2 is a side view showing the mounting portion. [Figure 3] FIG. 3 is an explanatory diagram showing the coil transport device when the holding portion is at the bottom dead center. [Figure 4] FIG. 4 is an explanatory diagram showing the coil transport device when the holding unit is in the middle of ascending or descending. [Figure 5] FIG. 5 is an explanatory diagram showing the coil transport device when the holding portion is at the top dead center. [Figure 6] FIG. 6 is a side view showing the auxiliary leg. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary. In the drawings, the same elements are denoted by the same reference numerals, and redundant explanations will be omitted. Furthermore, unless otherwise specified, the positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to the ratios shown in the drawings.

[0025] FIG. 1 is a schematic diagram showing a coil transport device A. As shown in FIG. The coil transport device A is a device for transporting and raising and lowering the metal coil B and carrying it into the uncoiler. The coil transport device A includes a plate-shaped base 1, a pair of drive cylinders 2 provided on the base 1, and a holder 3 for supporting the metal coil B that is raised and lowered by the drive cylinders 2.

[0026] The pair of drive cylinders 2 are provided at one end of the upper surface of the base 1 so as to face each other. One end of each drive cylinder 2 is pivotally attached to the base 1, and the other end is pivotally attached to the holding part 3 via an attachment part 31. The drive cylinders 2 are attached to the base 1 in a state inclined upward.

[0027] The pair of drive cylinders 2 are inclined so as to face each other. In the coil transport device A, the drive cylinders 2 extend and press against each other, causing the drive cylinders 2 to rotate and move the holding part 3 up and down relative to the base part 2. Specifically, the angle formed between the base 1 and the drive cylinder 2 is preferably in the range of 15 to 35 degrees, and more preferably 20 to 30 degrees. This allows the cylinders 2 to smoothly press against each other when the drive cylinder 2 is extended, and allows the upper end to be as low as possible when the drive cylinder 2 is retracted.

[0028] It is preferable that the drive cylinders 2 extend and retract in synchronization, which allows the holder 3 and the metal coil B held by the holder 3 to be moved up and down while maintaining a horizontal position. A known hydraulic cylinder can be suitably used as the drive cylinder 2 .

[0029] Similarly, a pair of drive cylinders 2 are provided facing each other on the other end of the upper surface of the base 1. These components are configured in the same manner as described above. It is preferable that the two pairs of drive cylinders 2 are all driven synchronously. This allows the holder 3 and the metal coil B held by the holder 3 to be moved up and down while remaining horizontal.

[0030] The inside of the drive cylinder 2 is connected to a hydraulic source (not shown), and a relay is provided between the pair of drive cylinders 2 to connect each drive cylinder 2 to the hydraulic source.

[0031] On the underside of the base 1, a drive mechanism 5 for moving the coil transport device A is provided. Known mechanisms such as wheels and a motor can be suitably used for the drive mechanism 5. The drive mechanism 5 moves the coil transport device A in the horizontal direction manually or according to a predetermined program. Specifically, it moves the coil transport device A, which has carried in the metal coil B in the upstream process, to the downstream process.

[0032] The holding portion 3 has a wide belt-like support portion arranged perpendicular to the arrangement direction of the drive cylinder 2 relative to the base 1, a roller 32 arranged on the outside of the belt, and a belt 33 which is narrower than the support portion and is arranged across the roller in a direction parallel to the support portion. The holding portion 3 supports the metal coil B in a state where it is in contact with the support portion and the belt 33 .

[0033] The support part is supported at both ends, so that the center of the top surface is recessed, forming a U-shape in side view. Because the metal coil B is cylindrical, it is positioned by fitting into the U-shaped portion. In the coil transport device A, the holding part 3 is U-shaped in side view, so that it is possible to prevent the metal coil B from moving in the horizontal direction. Therefore, when the metal coil B is moved up and down or horizontally, the holding part 3 can stably hold the metal coil B.

[0034] The rotation of the roller 32 causes the belt 33 to rotate, and the metal coil B is supported by the holding portion 3 and comes into contact with the belt 33, thereby rotating the metal coil B. This makes it possible to adjust the position of the cut in the metal coil B, allowing the uncoiler in the subsequent process to smoothly begin stretching the metal coil B. Furthermore, when cutting the band binding the metal coil B, the tip of the metal coil B can be directed downward, thereby preventing the metal coil B from spreading.

[0035] When the coil transport device A receives the metal coil B, the holding part 3 is raised while the axially supported metal coil B is positioned on the holding part 3, thereby removing the metal coil B from the shaft, and in this state the coil transport device A is moved horizontally by the drive mechanism 5. When the coil transport device A transports the metal coil B to the downstream process, the drive mechanism 5 moves the coil transport device A so that the shaft of the downstream process device (uncoiler) is inserted into the hole of the metal coil B while the metal coil B is supported by the holding unit 3. In this state, the holding unit 3 is lowered, so that the metal coil B is axially supported by the uncoiler. In addition, while the coil transport device A is moving horizontally, the holding part 3 moves upward, positioning the center of gravity at the center of the coil transport device A and stabilizing the movement of the coil transport device A.

[0036] FIG. 2 is a side view showing the mounting portion. The holding portion 3 is provided with the above-mentioned mounting portion 31, and the other end of the drive cylinder 2 is pivotally attached to the mounting portion 31. Since the holding part 3 and the drive cylinder 2 are connected via the mounting part 31, even if the trajectories of the pair of drive cylinders 2 shift when they are extended and they are unable to contact each other at the predetermined contact position, the force of the drive cylinder 2 is released and the holding part 3 rises stably.

[0037] The mounting portion 31 consists of an upper part 31a that is T-shaped in side view and to which the drive cylinder 2 is pivotally attached, and a lower part 31b from which connecting members protrude upward from a plate-like member for pivotally attaching the pair of upper parts 31a.

[0038] The connecting portions of the upper part 31a and the lower part 31b are each hook-shaped, and when the holding part 3 reaches the top dead center, they engage with each other to prevent further extension of the drive cylinder 2. In other words, the mounting part 31 functions as a stopper mechanism or locking mechanism for the lifting function of the coil transport device A. More specifically, the hook-shaped portion of the lower part 31b is located on the inside, and when the drive cylinder 2 extends and the holding part 3 reaches the top dead center, the hook-shaped portion of the upper part 31a rotated by the drive cylinder 2 and the hook-shaped portion of the lower part 31b come into surface contact and engage with each other. This prevents the drive cylinder 2 from extending any further, preventing the holding part 3 from tilting and preventing the drive cylinder 2 from applying more force than necessary to the base 1 and the holding part 3.

[0039] The drive cylinder 2 extends and retracts with its upper end pivotally attached to the mounting portion 31, so that tilting movement is suppressed, and the holding portion 3 can be kept horizontal when it moves up and down. Therefore, the holding portion 3 can stably support the metal coil B. Furthermore, since the attachment portion 31 is provided below the holding portion 3, when the holding portion 3 reaches the bottom dead center, it prevents the holding portion 3 from colliding with the base portion 1. Therefore, even when the drive cylinder 2 behaves unexpectedly or when the weight of the metal coil B is large, it is possible to prevent damage to the base portion 1 and the holding portion 3.

[0040] 3 to 5 are explanatory diagrams showing the lifting and lowering of the coil transport device A. FIG. 3 is an explanatory diagram showing the coil transport device A when the holding part 3 is at the bottom dead center. FIG. 4 is an explanatory diagram showing the coil transport device A when the holding unit 3 is in the middle of ascending or descending. FIG. 5 is an explanatory diagram showing the coil transport device A when the holding part 3 is at the top dead center.

[0041] The rising and falling of the coil transport device A will be described below with reference to FIGS. As shown in FIG. 3, at the bottom dead center, the tip of the drive cylinder 2 and the mounting portion 31 attached to the tip of the drive cylinder 2 are not in contact with each other. This allows for securing a working space for passing a band for binding the metal coil B, cutting it, winding it, etc.

[0042] As the pair of drive cylinders 2 extend in synchronization, the ends of the drive cylinders 2 that are not fixed, that is, the ends of the drive cylinders 2 on the holding portion 3 side, approach each other and come into contact with each other. As the drive cylinders 2 continue to extend, a pressing force acts on each other, causing the drive cylinders 2 to rotate around the pivot point on the base 1. At this time, because the pair of drive cylinders 2 are attached to the base 1 inclined in advance toward the receiving side, the horizontal force is canceled out by the pressing against each other, and only an upward force is exerted.

[0043] As a result, the holding part 3 is raised. More specifically, if the extending movement of the pair of cylinders is considered in terms of vertical and horizontal vectors, the horizontal vectors are cancelled out by the driving cylinders 2 pressing against each other. The vertical vector is released upward because the driving cylinder 2 is pivotally attached to the base 1, and the top plate side end of the driving cylinder 2 and the connected holding part 3 rise. At this time, the pair of cylinders extend at a low speed (low output) until they come into contact with each other, and then extend at a high speed (high output) after they come into contact with each other. This reduces wear on the drive cylinder 2 and makes it possible to stably lift the holding part 3 even when supporting a heavy metal coil B.

[0044] At this time, the auxiliary legs 4 follow the rise of the holding part 3. More specifically, the ends on the base 1 side slide closer to each other, and the height of the entire auxiliary legs 4 increases. As a result, the holding portion 3 is supported at both ends, the drive cylinder 2 side and the auxiliary leg 4 side, and the ascent is stabilized.

[0045] When the drive cylinder 2 is extended to its maximum extent, the holding portion 3 reaches the top dead center. Because the auxiliary legs 4 slide in conjunction with the holding part 3, when the holding part 3 reaches the top dead center, the connection point with the base part 1 is located at the innermost position. At this time, by positioning the auxiliary legs 4 at the inner end of the sliding width, the auxiliary legs 4 are located at the end of the sliding width when the holding part 3 reaches the top dead center, and the holding part 3 is stably supported.

[0046] The holding part 3 descends as the drive cylinder 2 retracts. At this time, the pair of drive cylinders 2 retract synchronously and the auxiliary legs 4 slide along with the holding part 3, allowing the holding part 3 to descend stably while remaining horizontal. When the drive cylinder 2 is contracted to its minimum, the drive cylinder 2 is in a state of being tilted along the base part 1. As a result, the holding part 3 descends and reaches the bottom dead center. Normally, the coil transport device A receives the metal coil B from the upstream process (stock) when the holding part 3 reaches the bottom dead center. This allows the height at which the metal coil B is carried into the downstream process to be as low as possible.

[0047] The horizontal movement of the coil transport device A is performed independently of the raising and lowering of the holder 3. Therefore, the height of the metal coil B can be changed as desired while the coil transport device A is moving. This allows the movement and height adjustment of the metal coil B to be performed simultaneously, making it possible to carry in the metal coil B in a shorter time. Furthermore, no space or separate equipment is required for lifting and lowering, improving the degree of freedom in layout.

[0048] The drive cylinder 2 extends and retracts synchronously when the holder 3 is raised and lowered as described above. By performing this asynchronously, a tilt function can be achieved in which the holder 3 and the metal coil B are tilted.

[0049] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments.

[0050] FIG. 6 is a side view showing the auxiliary leg 4. As shown in FIG. In the above-described embodiment, a pair of drive cylinders 2 is provided on each end of the base 1, but one of them may be an X-shaped auxiliary leg 4. In this embodiment, an X-shaped auxiliary leg 4 is provided on the other end of the top surface of the base 1. The lower end of the auxiliary leg 4 is attached so as to be slidable along a rail 41 provided on the base 1. The upper end of the auxiliary leg 4 is fixed to the holding part 3. The auxiliary leg 4 is pivotally attached at its intersection and driven to follow the rising or falling of the holding part 3. By providing the auxiliary legs 4, both ends of the holding part 3 are supported from below by the drive cylinder 2 and the auxiliary legs 4. Therefore, even if the weight of the metal coil B is large, the holding part 3 moves up and down stably. Moreover, the energy required to drive the drive cylinder 2 can be reduced.

[0051] Furthermore, when the auxiliary leg 4 slides relative to the rail 41, friction between the auxiliary leg 4 and the rail 41 applies braking to the auxiliary leg 4, the holding part 3 connected to the auxiliary leg 4, and the drive cylinder 2. The rails 41 apply a brake to the auxiliary legs 4, thereby preventing the holder 3 from moving up and down rapidly, and allowing the holder 3 to stably support the metal coil B.

[0052] In the above embodiment, hydraulic cylinders are used as the pair of drive cylinders 2, but the present invention is not limited to this and any suitable mechanism such as air pressure or water pressure may be used. The length of the drive cylinder 2 relative to the base 1 can be adjusted as appropriate. For example, the length may be set so that the drive cylinder 2 is not horizontal even when it is contracted to its minimum, and the holder 3 and base 1 do not come into contact with each other. This allows the height of the bottom dead center or top dead center of the holding portion 3 to be adjusted appropriately.

[0053] The drive mechanism 5 may be configured to move along a predetermined track using a combination of rails and wheels, etc.

[0054] In the above embodiment, the holding portion 3 supports the metal coil B by positioning it in the recessed portion, but the present invention is not limited to this. For example, it is possible to employ a mechanism that clamps the metal coil B from the horizontal direction, or a mechanism that has a shaft that moves horizontally and supports the metal coil B by the shaft. [Industrial Applicability]

[0055] The coil conveying device A of the present invention can be widely used in metal processing that requires the loading of a metal coil B, as it can convey the metal coil B to an uncoiler at as low a position as possible, improving the freedom of layout of the processing line. Furthermore, when the height at which the coil material is discharged in the upstream process differs from the height at which it is brought in in the downstream process, it is possible to adjust the height while transporting the metal coil B and carry it in and out. [Explanation of symbols]

[0056] A···Coil transport device 1...Base 2. Drive cylinder 3...Holding part 31 Mounting part 31a···Upper part 31b Lower part 32 Roller 33 Belt 4...Auxiliary legs 41. Slide rail 5. Drive mechanism 6 Stopper B Metal coil

Claims

1. A coil transport device for transporting and lifting a metal coil, A plate-shaped base; a holder for supporting the metal coil; a pair of drive cylinders, one end of each of which is pivotally attached to the base portion and the other end of which is pivotally attached to the holding portion; Equipped with The pair of drive cylinders are inclined so as to face each other, The coil transport device in which the drive cylinder extends to press the holder against the base, and the drive cylinder rotates to move the holder up and down relative to the base.

2. 2. The coil transport device according to claim 1, further comprising a drive mechanism that is movable in a horizontal direction.

3. 2. The coil transport device according to claim 1, wherein the holding portion is U-shaped when viewed from the side.

4. the holding unit has rollers provided at both ends and a belt laid across the rollers, The coil transport device according to claim 1 , wherein the metal coil held by the holding portion can be rotated by the rotation of the roller.

5. The holding portion is provided with an attachment portion, 2. A coil transport device according to claim 1, wherein the other end of said drive cylinder is pivotally attached to said mounting portion.

6. 2. The coil transport device according to claim 1, wherein the pair of drive cylinders extend and retract in synchronization with each other.

7. The drive cylinder is provided on one end side of the base portion, An X-shaped auxiliary leg is provided on the other end side of the base, 2. The coil transport device according to claim 1, wherein the end of the auxiliary leg on the base side slides along a rail provided on the base.

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