JP2001335153A - Angle steel stacking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stacking device for efficiently stacking angle steels of a magnetic or non-magnetic type in a simple and inexpensive structure. SOLUTION: The angle steels 2 carried via a chain conveyor 1 are interrupted by a stopper 9 and aligned on a carriage plane. The angle steels 2a, 2c, 2e corresponding to a comb tooth 4a of a protruded portion 4, out of the preset number of aligned angle steels 2a-2f, are lifted slantly upward in package by a lift mechanism 3. The angle steels 2b, 2d, 2f on the chain conveyor 1 are carried to a lift-down position of the lifted angle steels 2a, 2c, 2e and the lifted angle steels 2a, 2c, 2e are lifted down and stacked on the angle steels 2b, 2d, 2f on the chain conveyor 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stacking device for stacking angle irons.

[0002]

2. Description of the Related Art When storing a long angle steel having an L-shaped equilateral or non-equilateral mountain-shaped cross section, which is generally called an angle, in a manufacturing plant or a warehouse, a plurality of parallel steel pieces are arranged with their tops facing up. On top of these angle irons,
A stacking process of stacking another angle iron is performed. The conventional angle iron stacking device for performing the above stacking process is a chain conveyor that transports the angle iron, a lifting magnet that magnetically attracts and lifts the angle iron, a lifting device that raises and lowers this lifting magnet, and a lifting magnet. And an overbridge for suspending and supporting the lifting device. The process of stacking the angle irons in the two-stage manner by the device involves a process of transporting a predetermined number of angle irons (the upper stage of the two-stage stack) sideways by a chain conveyor, and adsorbing these angle irons collectively by a lifting magnet. A step of transporting the same number of other angle irons (the lower part of a two-tier stack) by a chain conveyor while maintaining the lifted state, and a step of lifting the upper angle iron on the lower part of the angle irons And lowering the angle iron into two tiers.

[0003]

The above-described conventional apparatus requires a lifting device for lifting and lowering the lifting magnet and an overbridge, so that there is a problem that the equipment becomes large and the equipment cost increases. Further, in order to prevent the lower angle iron and the upper angle iron from being simultaneously lifted by the lifting magnet, the lower angle iron and the upper angle iron must be transported separately from each other. Therefore, there is a problem that the cycle time becomes long and the efficiency is particularly low when processing a product having a small cross-sectional dimension or a product having a small thickness. Furthermore, since the conventional apparatus uses an electromagnet as means for lifting the angle iron, there is also a problem that non-magnetic angle iron such as stainless steel cannot be treated.

[0004] In view of the above-mentioned conventional problems, an object of the present invention is to provide a stacking device capable of stacking angle irons efficiently with a simple and inexpensive configuration regardless of magnetic or non-magnetic. I do.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, an angle iron stacking apparatus according to the present invention comprises an angle iron in which the same number of angle irons are stacked from above on a plurality of angle irons. In the stacking device of the above, a conveying device for transporting a plurality of angle irons sideways with their tops facing upward, and a predetermined number of angle irons of the angle irons conveyed by this conveying device, Supporting one of the side surfaces from below, raising the diagonally upward by a predetermined height, and then raising and lowering the mechanism, and in a state where the angle iron is raised by the raising and lowering mechanism, controlling the driving of the transfer device, A controller for moving the angle iron remaining on the transfer device to a lowered position of the angle iron raised.

According to the angle steel stacking apparatus having the above structure,
The angle iron, which has been transported by the transport device with the top part upward, is raised obliquely upward by the elevating mechanism every predetermined number, and in this state, the drive of the transport device is controlled by the control unit and remains on the transport device. After moving the angle iron to the lowered position of the raised angle iron, by lowering the raised angle iron by the elevating mechanism, the raised angle iron is moved onto the angle iron remaining on the transfer device. Can be stacked. As described above, the angle iron stacking device is configured to raise and lower the angle irons conveyed by the conveying device every predetermined number and stack the angle irons remaining on the conveying device. The angle iron and the angle iron stacked on the upper stage can be transported without being separated. Also,
Nonmagnetic angle irons can also be stacked without hindrance, and a lifting device for lifting the lifting magnet and an overbridge are not required.

The elevating mechanism includes a comb-shaped push-up portion along one of the inner surfaces of the angle iron, and a drive portion that moves the push-up portion up and down to a lower position of the transfer device and an obliquely upper position thereof. Preferably, it is provided (claim 2). In this case, the push-up unit is moved up and down by the drive unit to the lower position of the transfer device and the diagonally upper position thereof, so that a predetermined number of angle irons are collectively lifted or lowered while maintaining the transfer posture. Or you can.

[0008] It is preferable that the push-up portion is replaceably attached to the drive portion. In this case, the stacking process can be performed according to the type and size of the angle iron and the number of stacks by replacing the push-up portion.

[0009] The angle iron stacking device is provided adjacent to a predetermined number of angle irons to be stacked downstream in the conveying direction, and separates the angle iron following the predetermined number of angle irons from the conveying surface of the conveying device. It is preferable to provide a separation mechanism that causes the apparatus to wait. In this case, from the angle irons on the conveyor, only the number required for the stacking process can be transported, and the subsequent angle irons can be kept adjacent to the predetermined number of angle irons to be stacked. .

It is preferable that the separating mechanism includes a lifting lever for scooping the angle steel from the conveying surface, and a convex portion corresponding to the inner surface of the angle steel is formed at a downstream end of the lifting lever. In this case, since the leading angle steel to be subjected to the subsequent processing can be held by the convex portion of the elevating lever, it is possible to prevent the angle steel from being displaced or falling from the elevating lever due to the scooping operation of the elevating lever.

It is preferable that the stacking device of the angle steel has a stopper for damping a predetermined number of angle irons to be stacked and conveyed by the conveying device and aligning them in a state of being in close contact with each other. . In this case, each angle steel can be aligned without gaps only by damping the predetermined number of angle irons, which are conveyed by the conveyance device, into a stack.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a schematic side view showing one embodiment of the angle steel stacking device of the present invention. This stacking device for angle irons performs a stacking process with a chain conveyor 1 as a conveying device for the angle irons 2 and an elevating mechanism 3 for raising and lowering the angle irons 2 conveyed by the chain conveyor 1 at predetermined intervals. Angle iron 2
Up the angle steel 2 following the chain conveyor 1
A separating mechanism 6 for separating from the conveying surface of the chain conveyor, a stopper 9 for damming the angle iron 2 on the chain conveyor 1 and aligning them in a state of close contact with each other, and driving the chain conveyor 1, the elevating mechanism 3, the separating mechanism 6 and the stopper 9 The main part is constituted by the control unit X that controls

In the above-mentioned conveying apparatus, a plurality of chain conveyors 1 are arranged in parallel at a constant interval. Angle iron 2
Is transported sideways with its top facing upward and its longitudinal direction orthogonal to the transport direction of the chain conveyor 1.

The elevating mechanism 3 is provided for each of the chain conveyors 1.
Is usually provided between the chain conveyors 1
Waiting below. The lifting mechanism 3 includes a push-up portion 4 that supports a predetermined angle iron 2 on the chain conveyor 1 from below, and a drive portion 5 that moves the push-up portion 4 up and down.
And

The push-up portion 4 has a comb-like shape, and is attached to the drive portion 5 via an attachment 41 with its longitudinal direction perpendicular to the longitudinal direction of the angle iron 2. The push-up portion 4 is detachably attached to the attachment 41. The push-up portion 4 is provided with a plurality of comb teeth 42 a at intervals corresponding to a pitch of two angle irons 2 aligned on the chain conveyor 1. Each of the comb teeth 42a extends obliquely upward and parallel to the inner surface A of the angle iron 2, and moves the corresponding angle iron 2 when moved obliquely upward.
Waiting at a position where it can be introduced into the inside of the. The length of each comb tooth 42 a is set to be more than twice as long as the side surface of the angle iron 2. In this embodiment, the number of angle irons 2 aligned on the chain conveyor 1 is six, and three comb teeth 42a are formed correspondingly.

The drive unit 5 includes a fluid pressure cylinder 5a, and a piston rod 5b of the fluid pressure cylinder 5a extends obliquely upward such that its axis is parallel to the inner surface A of the angle iron 2. ing. The elevating mechanism 3 is
By driving the fluid pressure cylinder 5a, the piston rod 5b
Is pushed obliquely upward, and the comb teeth 42 of the push-up portion 4 are pushed out.
a, every other angle iron 2 on the chain conveyor 1
a, 2c, and 2e while supporting each inner surface A,
The angle irons 2a, 2c, 2e are pushed up to a height that allows horizontal movement of the angle irons 2b, 2d, 2f remaining on the chain conveyor 1 (see FIG. 2).

The separation mechanism 6 is provided between the chain conveyors 1 in such a manner that the separation mechanism 6 is adjacent to the six angle irons 2 to be stacked one above the other in the transport direction. The separation mechanism 6 lifts and lowers a plurality of angle irons 2 following the six angle irons 2 to be stacked one by one from the chain conveyor 1 and then mounts the angle irons 2 on the chain conveyor 1 again at a predetermined timing. 6a, and a pair of rotating levers 6b for raising and lowering the lifting lever 6a alternately between a lower position and an upper position on the transport surface.

The upper end of the rotating lever 6b has a shaft 6
The lower end is rotatably connected to a raising / lowering lever 6a and a fixed shaft 6d provided below the chain conveyer 1 via a pair c. The rotating lever 6b is rotated clockwise around the fixed shaft 6d by a driving means (not shown) to be raised, thereby raising the elevating lever 6a to a position above the transport surface (see FIG. 1), and fixing. By turning counterclockwise about the shaft 6d to fall down, the lifting lever 6a is lowered to a position below the transport surface (see FIG. 4). An upper part of the downstream end (left end in FIG. 1) of the elevating lever 6a is formed with a chevron-shaped convex part 6e that matches the inner surface of the angle iron 2, and the convex part 6e allows the elevating lever 6a to be moved. By the scooping operation, the lifting lever 6a
This prevents the top angle iron 2g from being displaced and falling from the lifting lever.

At a position adjacent to the downstream end of the elevating lever 6a, a counting device 8 for counting the number of conveyed angle irons 2 is arranged. The counting device 8 includes a light emitting / receiving type optical sensor, and the light emitting portion 8a and the light receiving portion 8b are arranged to face each other with the transport surface of the chain conveyor 1 interposed therebetween. The counting device 8 is set so as to output a signal to the control unit X when detecting the passage of the six angle irons 2.

On the downstream side in the transport direction of the elevating mechanism 3, there is provided a stopper 9 which can protrude and retract from the transport surface of the chain conveyor 1. The stopper 9 is provided between the chain conveyors 1, advances above the conveying surface, dams the leading angle iron 2 a conveyed on the chain conveyor 1, and stops the subsequent angle iron 2 a conveyed. Steel 2b-2
f are aligned so as to be in close contact with each other. By retracting the stopper 9 below the conveying surface, the stacked angle irons 2 can be carried out.

Next, the operation of the stacking device for the angle iron 2 constructed as described above will be described with reference to FIGS. In FIG. 1, angle irons 2 sequentially conveyed from right to left by a chain conveyor 1 at a certain interval from each other. When a head angle iron 2 a is blocked by a stopper 9, subsequent angle irons 2 b to 2 f are also successively formed. They are dammed and aligned in close contact with each other. At this time, the passage of the sixth angle iron 2f is detected by the counting device 8, and when an output signal thereof is input to the control unit X, the rotation lever 6b is clocked based on the signal from the control unit X. By rotating in the clockwise direction, the elevating lever 6a is tilted in the clockwise direction to separate the subsequent angle irons 2g to 2i from the transport surface and wait, and the chain conveyor 1 is stopped. The result of this operation is the state shown in FIG. That is, FIG.
In this state, the six angle irons 2a to 2f are aligned without gaps, and the tips of the comb teeth 4a of the push-up portion 4 are located below the odd-numbered angle irons 2a, 2c, and 2e from the top. The elevating lever 6a is raised as a whole, and the left end is lifted higher than the chain conveyor 1.
As a result, the angle irons 2g to 2i are reliably separated from the conveying surface and stand by.

When the alignment of the angle irons 2a to 2f is completed, the hydraulic cylinder 5a is driven to raise the push-up portion 4 obliquely upward (see FIG. 2). Accordingly, the odd-numbered angle irons 2a, 2c, and 2e from the top are lifted obliquely upward while being held in contact with the upper surface 42c of the comb teeth 42a of the push-up portion 4. In this state, the drive of the chain conveyor 1 is controlled by the control unit X, and the even-numbered angle irons 2b, 2d, and 2f are moved until they come into contact with the lower surface 42d of each comb tooth 42a of the push-up unit 4 (FIG. 3). reference). At this time, the following angle irons 2g to 2i are restricted by the elevating lever 6a and do not advance.

Next, the push-up portion 4 is connected to the hydraulic cylinder 5
It is lowered by a and returned to the original position (see FIG. 4). Thereby, the odd-numbered angle irons 2a, 2c, 2
e is stacked in two stages on the even-numbered angle irons 2b, 2d, and 2f. Here, the stopper 9 is lowered, and then,
The rotating lever 6b is rotated in the counterclockwise direction to lower the elevating lever 6a. In this state, the chain conveyor 1
Is advanced, the subsequent angle irons 2g to 2i are carried in above the push-up portion 4, and the two-tiered angle irons 2a to 2f are carried out (see FIG. 5).

As described above, the angle steel stacking device is
The angle irons 2 conveyed on the chain conveyor 1 are aligned and stacked by the elevating mechanism 3 every two stages, and the next angle iron 2 is aligned while the stacked angle irons 2 are carried out. Can be stacked. Therefore, compared to a lifting magnet that attracts and suspends the angle iron 2, the stacking process can be performed with a small and simple structure, and the angle iron 2 for two stages can be transported and processed at one time. Time can be shortened. In addition, the nonmagnetic angle steel 2 can be stacked without any problem.

In the above embodiment, the angle iron 2
Is illustrated in the case of stacking in two stages, but it is also possible to stack in multiple stages.
If "a" is arranged at a pitch of two or three angle irons, three-stage stacking becomes possible.

[0026]

As described above, according to the angle steel stacking apparatus according to the first aspect, the angle irons on the transfer device are raised and lowered at predetermined intervals, and are stacked on the angle irons remaining on the transfer device. Since they are stacked, simplification of the structure and miniaturization of the equipment can be achieved, equipment costs can be reduced, and nonmagnetic angle irons can also be stacked without hindrance. Also, a predetermined number of angle irons to be stacked
Since they can be transported without being separated as a lot, the stacking process can be performed efficiently.

According to the angle iron stacking device according to the second aspect, since a plurality of angle irons can be lifted or lowered at once by the comb teeth, the processing efficiency is further improved.

According to the angle iron stacking device according to the third aspect, by replacing the push-up portion, it is possible to cope with various stacking processes according to the type and size of the angle iron and the number of stacked irons, and to change the setup. Can be performed easily and quickly.

According to the fourth aspect of the present invention, from among the angle irons on the transfer device, only the number required for the stacking process is transferred, and the subsequent angle irons are stacked. Can be kept adjacent to the angle iron, so that the subsequent angle iron can be quickly carried into the stacking zone. Therefore, the cycle time can be further effectively reduced.

According to the fifth aspect of the present invention, the leading angle steel to be subsequently processed is held by the convex portion of the elevation lever, and the angle iron is positioned by the scooping operation of the elevation lever. Since it can be prevented from shifting or falling from the lifting lever, the following angle steel can be reliably transported to the stacking zone and sequentially aligned.

According to the apparatus for stacking angle irons according to the sixth aspect, a plurality of angle irons to be stacked can be aligned with no gap by damping with a stopper. They can be easily and reliably aligned.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing one embodiment of an angle iron stacking device according to the present invention.

FIG. 2 is a schematic side view showing a state where odd-numbered angle irons are lifted.

FIG. 3 is a schematic side view showing a state where an even-numbered angle iron is advanced.

FIG. 4 is a schematic side view showing a state where odd-numbered angle irons are stacked on even-numbered angle irons.

FIG. 5 is a schematic side view showing a state in which the stacked angle irons are carried out, and then the angle irons to be stacked are carried in.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chain conveyor (transport apparatus) 2 Angle iron 3 Elevating mechanism 4 Push-up part 42 Comb part 5 Drive part 6 Separation mechanism 6a Elevating lever 6c Convex part 9 Stopper A Inner side surface X Control part

Claims (6)

[Claims] 1. An angle steel stacking apparatus for stacking the same number of angle irons from above on a plurality of angle irons, wherein the plurality of angle irons are transported sideways with their tops facing upward. And a predetermined number of the angle irons conveyed by the conveying device, supporting one of the inner surfaces thereof from below, raising the angle obliquely upward to a predetermined height, and then descending. A raising / lowering mechanism for controlling the driving of the conveying device in a state where the angle iron is raised by the raising / lowering mechanism, and moving the angle iron remaining on the conveying device to a lowered position of the raised angle iron. And a stacking device for angle irons. 2. A comb-shaped raising portion along one of the inner surfaces of the angle iron, and a driving portion for moving the raising portion up and down to a lower position of the conveying device and an obliquely upper position thereof. The stacking device for angle iron according to claim 1, comprising: 3. The stacking device according to claim 2, wherein said push-up portion is exchangeably attached to said drive portion. 4. A separation mechanism which is provided adjacent to a predetermined number of angle irons to be stacked and is located downstream of the conveying direction of the angle irons, and which makes the angle iron following the predetermined number of angle irons away from the conveying surface of the conveying device and waits. The stacking device for angle iron according to claim 1, further comprising: 5. The chevron according to claim 4, wherein said separating mechanism includes a lifting lever for scooping the chevron from the conveying surface, and a downstream end of the raising / lowering lever is formed with a convex portion corresponding to the inner surface of the chevron. Steel stacking equipment. 6. The angle iron stacking device according to claim 1, further comprising a stopper for damping a predetermined number of angle irons conveyed by said conveying device and aligning them in a state of being in close contact with each other.