JP4008269B2 - Ingot stacking method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ingot stacking method and apparatus for stacking a plurality of ingots such as aluminum.
[0002]
[Prior art]
In general, ingots such as aluminum have a substantially trapezoidal cross section and have a predetermined length, and are stacked in a plurality of rows or six in a horizontal pattern in which six or seven are arranged horizontally. From there, it is fastened with a rope and shipped.
In this case, two or four leg ingots are arranged under the stacked ingots for the purpose of inserting the claws of the forklifts for the convenience of moving the piles of the stacked ingots with the forklift.
Most of the operations for shipping such ingots are usually performed by an ingot stacking device. That is, the stacking device grips a plurality of ingots that are successively supplied in the horizontal direction and places them on the transport device. Next, a plurality of ingots are newly gripped, and the angle is changed by 90 degrees and placed on the previous ingot. This operation is repeated, and ingots are stacked in a plurality of stages in a cross-beam shape. Then, after the final stage ingot is stacked, the leg ingot is stacked on the final stage ingot. The leg ingots are piled up manually by a manual operation because the number of grips is smaller than that of the ingot held by the stacking device.
The ingots stacked in this way are transferred from the stacking device to another place and banded. That is, the leg ingot is lowered from the uppermost part of the transferred ingot pile, and the leg ingot is positioned at the lowermost part of the ingot pile, and in this state, the entire ingot is fastened with a rope and fixed. Thus, the ingot is packed and can be shipped.
[0003]
[Problems to be solved by the invention]
By the way, in the work up to the shipment of the ingot, the leg ingots are stacked manually, but there is a problem that a great deal of labor is required. In order to solve this problem, it can be considered that the leg ingots are stacked by a stacking device.
However, in the conventional ingot stacking apparatus, since, for example, seven ingots are accumulated at the gripping position P of the casting line, it is set to finish one stacking process (cycle). If one or four of them are gripped and stacked on the top of the ingot, there will be a problem that the ingot will not accumulate in time and the ingot will accumulate too much on the line. On the other hand, if the normal stacking cycle was set to be the same as the time to stack two or four leg ingots and stacked on the top of the ingot, the normal ingot stacking cycle must be set very fast. It is not realistic.
[0004]
The present invention has such has been made in consideration of the circumstances, a method that purpose, without causing loss to process stacked ordinary ingot, stacked ingot capable of building up leg ingot ingot in the last stage And providing such a device.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides the following means. According to the first aspect of the present invention, a plurality of ingots that are successively supplied to the gripping position are gripped by a gripping mechanism, and the gripped ingots are moved in the horizontal direction and placed on the transport device. In the ingot stacking device that stacks the ingots orthogonally in a plurality of stages by repeating a plurality of times, the gripping mechanism includes a gripping mechanism main body, and a turning means for rotating the gripping mechanism main body around a main axis in a horizontal plane, Elevating means for elevating and lowering the gripping mechanism main body in the vertical direction. The gripping mechanism main body includes a first gripping means for gripping the last stage ingot, and a second gripping means for gripping the leg ingot. wherein the second gripping means to grip the ingot leg, then after the first gripping means has gripped the ingot of the final stage, the gripping mechanism is increased After moving onto the feeding device, it descends so that the first gripping means places the final stage ingot, and then the second gripping means places the leg ingot on the final stage ingot. It is comprised by these.
[0006]
In the ingot stacking apparatus according to the present invention, the leg ingot can be automatically stacked on the final stage ingot.
[0007]
The invention according to claim 2 is the ingot stacking device according to claim 1,
The first gripping means in the gripping mechanism is arranged below the second gripping means.
[0008]
In the ingot stacking apparatus according to the present invention, the leg ingot can be gripped by the second gripping means, and the normal ingot can be gripped simultaneously by the first gripping means.
[0009]
The invention according to claim 3 grips a plurality of ingots that are successively supplied to the gripping position, moves the gripped ingots in the horizontal direction, and places them on the transport device, and this operation is performed a plurality of times. In the ingot stacking method in which the ingots are stacked in a plurality of stages in an orthogonal manner by repeating, when the final stage ingot and the leg ingot are stacked, both the final stage ingot and the leg ingot are gripped, and the final stage ingot is mounted. After placing , the leg ingot is stacked on the final stage ingot .
[0010]
In the ingot stacking method according to the present invention, when the final stage ingot is gripped, the leg ingot is also gripped at the same time, so that the speed of the stacking line is not delayed with respect to the speed of the casting line of the ingot and the operation is smoothly advanced. be able to.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an example of an ingot stacking apparatus according to the present invention, FIG. 2 is a plan view of the ingot stacking apparatus, and FIG. 3 is a side view of the ingot stacking apparatus. Here, the ingot stacking device 10 moves the plurality of ingots 12 gripped at the gripping position P by the gripping mechanism 11 in the horizontal direction and places them on the transport device 13 by repeating the operation a plurality of times. The ingot 12 is stacked orthogonally. The gripping mechanism 11 includes a gripping mechanism main body 15 having a first gripping means 40 and a second gripping means 41, and the gripping mechanism main body 15 in a horizontal plane. Slewing means 17 that pivots around the center and lifting / lowering means 18 that moves up and down in the vertical direction.
[0012]
The gripping mechanism 11 is arranged so as to be movable via a wheel 28 on a rail 27 laid in parallel on the upper part of the device frame 26. The gripping mechanism 11 is driven in the horizontal direction by the fluid cylinder 29. Further, as shown in FIGS. 4 and 5, the first gripping means 40 provided in the gripping mechanism main body 15 includes a pair of left and right arms 23 arranged so as to be rotatable about a support shaft 22 and the arms 23. Driving means 24 for driving the gripping plate 14 fixed to the tip of the gripping plate 14 in the direction of approaching and separating. In FIG. 4, only one of the arm 23, the gripping plate 14, etc. is shown, and the other is omitted. The driving means 24 is composed of a fluid cylinder or the like. The arm 23 has a substantially U-shaped cross section, and a grip plate 14 having an L-shaped cross section is fixed to the tip. The width of the gripping plate 14 can grip seven ingots 12 at a time in this embodiment. The number of grips is not limited to this embodiment, but may be other numbers.
[0013]
Further, the second gripping means 41 is arranged in a direction in which a pair of left and right small arms 43 that are rotatably arranged around the support shaft 42 and a gripping plate 44 fixed to the tip of the small arm 43 are approached and separated. Drive means 45 for driving is provided. In FIG. 4, only one of the small arm 43 and the grip plate 44 is shown, and the other is omitted. The drive means 45 is composed of a fluid cylinder or the like. The small arm 43 has a substantially U-shaped cross section, and a grip plate 44 having an L-shaped cross section is fixed to the tip. The width of the gripping plate 44 can grip two or four ingots 12 at a time in the present embodiment.
[0014]
In addition, the gripping mechanism main body 15 includes a pressing member 25 supported so as to be able to advance and retract in the vertical direction so as to press the upper surface 12a of the ingot 12 gripped by the pair of gripping plates 14. The pressing member 25 is driven by a fluid cylinder 25a. In the present embodiment, only the ingots positioned at both ends of the ingot 12 gripped by the gripping plate 14 are pressed.
[0015]
The turning means 17 can rotate the main shaft 16 at 0 degrees, 90 degrees, 180 degrees, and 270 degrees. Further, by rotating the main shaft 16, the gripping mechanism main body 15 connected thereto rotates, and the gripped ingot 12 can be rotated.
[0016]
The order of rotating the gripped ingot 12 is not limited to the method of securing the position by rotating in one direction with a predetermined orientation as a reference (0 degree), and rotating in one direction or in the opposite direction. You may make it ensure the said position.
[0017]
The conveying device 13 includes a lifting platform 31 and a chain conveyor 32. The lifting platform 31 is within the movement range of the gripping mechanism 11 and is positioned between the chain conveyors 32 divided into left and right. The elevating table 31 includes a mounting table 33 on which the ingot 12 is mounted, a pantograph arm 34 that supports the ingot 12, a fluid cylinder 35 that expands and contracts the arm 34, a base 36 that supports the cylinder 34, and the like.
[0018]
The lifting table 31 configured as described above can raise and lower the mounting table 33 by operating the fluid cylinder 35. Each time an ingot is placed on the lifting platform 31, it is lowered by a certain amount, and after placing the final stage, the placing table 33 is lowered from the upper surface of the chain conveyor 32, and the ingot assembled in a cross-beam shape is transferred onto the placing table 33. To do.
[0019]
The chain conveyor 32 winds an endless chain 32 a around a sprocket 32 b arranged at both ends, and is driven to rotate by a drive motor 37. Moreover, the endless chain 32a is arrange | positioned at right and left at a slightly narrow space | interval rather than the length of an ingot, and the raising / lowering base 31 is arrange | positioned between the endless chains 32a and 32a.
[0020]
Next, the operation of the ingot stacking device configured as described above will be described. First, a plurality of ingots 12 that are sequentially conveyed are simultaneously held at the holding position P by the holding mechanism 11. In the present embodiment, the seven ingots are simultaneously gripped by the first gripping means 40. Specifically, the arm 23 that has been opened by the contraction of the drive unit 24 is closed by the extension of the drive unit 24. When the arm 23 is closed, the gripping plate 14 fixed to the tip of the arm 23 grips both ends of the seven ingots.
[0021]
Next, the gripping mechanism 11 that grips the ingot 12 is moved up on the rail 27 by the fluid cylinder 29 after being lifted by the elevating means 18. The horizontally moving gripping mechanism 11 is lowered and the gripping plate 14 is opened to place the ingot 12 on the mounting base 33 of the lifting base 31.
[0022]
The gripping mechanism 11 on which the ingot 12 is placed on the placing table 33 moves up again and moves horizontally by the fluid cylinder 29 to return to the gripping position P.
[0023]
At the gripping position P, the next ingot is gripped and raised, and the gripping mechanism 11 is rotated 90 degrees by the turning means 17. At the same time, after moving horizontally by the fluid cylinder 29, the fluid cylinder 29 descends and places the ingot on the transport device 13. The second stage ingot is rotated 90 degrees with the first stage ingot. This operation is sequentially repeated, and the ingots are stacked in the order of 0 degrees, 90 degrees, 180 degrees, and 270 degrees. Since the ingot is rotated by 90 degrees for each stage, even if there is a difference in thickness in the longitudinal direction of the ingot, it is possible to stack the cross-beams at an average height. During this time, the second gripping means 41 is located on the upper side and does not get in the way.
[0024]
Further, when stacking the final stage ingot and the leg ingot , at the gripping position P, first, the second gripping means 41 grips two or four leg ingots, and then descends further to the first ingot. The seven last stage ingots are held by the holding means 40. During this time, the gripping mechanism 11 does not move horizontally, but only moves up and down, so that loss time can be minimized. When the first gripping means 40 grips seven ingots, the gripping mechanism 11 is lifted by the lifting / lowering means 18 and then horizontally moved on the rail 27 by the fluid cylinder 29. The horizontally moving gripping mechanism 11 is lowered, and the first gripping means 40 opens the gripping plate 14 to place the ingot 12 on the mounting base 33 of the lifting / lowering base 31. Next, the second gripping means 41 is opened, and the leg ingot is placed on the stacked ingot. In this way, leg ingots can be stacked simultaneously.
[0025]
For example, when the cycle time of the stacking device is 10 sec / 1 cycle, when four leg ingots are gripped and processed only by the first gripping means 40, a movement of 7.2 sec / 1cycle is required. It cannot follow in 12.6sec / 1cycle when processing by gripping seven. However, as in the present embodiment, if 7 are gripped by the first gripping means 40 and 4 are gripped by the second gripping means 41, 10 sec / 1cycle is sufficient, and sufficient follow-up is possible.
[0026]
Thus, the pile of ingots on which the leg ingots are stacked as described above is transferred to a different place as described above, and the leg ingots are positioned at the lowermost part, and the rope is hooked and can be shipped. It becomes a state.
As described above, according to the stacking device, the leg ingots can be automatically stacked, and the work labor can be reduced.
The present invention is not limited to the above embodiments, and various design changes can be made based on the technical idea of the present invention.
[0027]
【The invention's effect】
As described above, according to the invention of claim 1, when stacking the last stage and legs ingots, the final stage in the first gripping means after gripping the leg ingot second gripping means After the ingot is gripped and the first gripping means places the final stage ingot, the second gripping means places the leg ingot, and the gripping mechanism operates the first gripping means and the second gripping means. Since it moves only up and down without moving horizontally, the loss time can be minimized, and the leg ingot can also be gripped and stacked within the normal stacking cycle. Therefore, the leg ingots can be automatically stacked, and the work labor can be reduced.
[0028]
According to the invention of claim 2, since the first gripping means in the gripping mechanism is disposed below the second gripping means, even if the second gripping means grips the leg ingot. The first gripping means can grip and convey a normal stacked stage ingot. Therefore, the normal transfer cycle is not hindered.
[0029]
Further, according to the invention of claim 3, when the final stage and the leg ingot are stacked, both the final stage ingot and the leg ingot are gripped. Can be stacked on the last stage.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of an ingot stacking apparatus according to the present invention.
FIG. 2 is a plan view of the ingot stacking device.
FIG. 3 is a side view of the ingot stacking device.
FIG. 4 is a side view showing a gripping mechanism of the ingot stacking device.
FIG. 5 is a front view showing a gripping mechanism of the ingot stacking device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Ingot stacking device 11 Grip mechanism 12 Ingot 12a Upper surface 13 Conveying device 14 Grip plate 15 Grip mechanism main body 16 Main shaft 17 Turning means 18 Lifting means 22 Support shaft 23 Arm 24 Drive means 25 Pressing member 40 First grip means 41 Second Gripping means

Claims (3)

A plurality of ingots that are successively supplied to the gripping position are gripped by a gripping mechanism, the gripped ingots are moved in the horizontal direction and placed on the transfer device, and this operation is repeated a plurality of times. In an ingot stacking device that stacks the ingots orthogonally to each other,
The gripping mechanism comprises a gripping mechanism main body, a turning means for rotating the gripping mechanism main body around a main axis in a horizontal plane, and an elevating means for raising and lowering the gripping mechanism main body in a vertical direction.
The gripping mechanism main body includes first gripping means for gripping the final stage ingot, and second gripping means for gripping the leg ingot ,
After the second gripping means grips the leg ingot, and then the first gripping means grips the final stage ingot, the gripping mechanism rises and moves onto the transport device, and then descends. An ingot configured so that the first gripping means places the final stage ingot, and then the second gripping means places the leg ingot on the final stage ingot. Stacking device.   2. The ingot stacking apparatus according to claim 1, wherein the first gripping means in the gripping mechanism is disposed below the second gripping means. Grasp a plurality of ingots that are sequentially supplied to the gripping position, move the gripped ingots horizontally and place them on the transport device, and repeat this operation a number of times to place the ingots in a plurality of stages. In the method of stacking ingots that are stacked perpendicularly,
Characterized in building up the last stage ingots and leg ingot and the ingot and a leg ingots in the final stage and both gripping the ingot of the final stage after placing, that pile up Leg ingot on the final stage ingots How to stack ingots.

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