JPH0442288B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is directed to a bar transport conveyor, in which three rods are stacked on top of each other, with their axes aligned and their radial movement restricted. The present invention relates to a device for eliminating the stacked state of the above bars.

(Prior Art) When bar materials are transported by a conveyor, it is inefficient to place the bars one by one on the carry-in end side of the conveyor.

Therefore, it is desirable to place a large number of bars on a conveyor at once.

At this time, in order to place a large number of bars such as round billets and steel pipes on a conveyor, the bars are usually bundled with hanging wires, etc., and then placed on the conveyor using a crane, etc. It will be unraveled and placed on the top of the conveyor.

However, as mentioned above, when a large number (three or more) of bars are placed on the conveyor while being bundled with hanging wires, etc., the friction between the bars and the top of the conveyor causes the bars to stack up and down. It may be placed in the same position.

If there is a case where the bars are cut out one by one at the discharge end of the conveyor, it is necessary to eliminate the vertically stacked state.

However, there has been no conventional device for undoing the stacking of bars stacked on a conveyor.

Therefore, conventionally, the bars had to be placed one by one on the conveyor, which was very troublesome.

By the way, when considering an apparatus for eliminating the stacking of bars, it is possible to apply the technique described in Japanese Utility Model Publication No. 52-48544.

In this conventional technology, a plurality of main conveyors are arranged in parallel, and a plurality of stock conveyors and receiving conveyors are connected in parallel and in series between the main conveyors, and the stock conveyors and receiving conveyors swing. Supports the main conveyor so that it can freely appear and retract from the main conveyor.
The receiving conveyor and the stock conveyor are made to protrude above the main conveyor, and the bars that are continuously sent on the main conveyor are transferred from the receiving conveyor onto the stock conveyor, and then the bars are transferred between the receiving conveyor and the stock conveyor. The conveyor was recessed below the main conveyor, and the bars on the stock conveyor were arranged in arbitrary numbers and transferred onto the main conveyor.

(Problems to be Solved by the Invention) When the technology of the conventional bar alignment device is applied to a stacking removal device, the stacking state can be eliminated when the bars are transferred from the main conveyor to the receiving conveyor.

However, if the stacking condition is resolved when transferring from the main conveyor to the receiving conveyor, the stacking will collapse and the heavy bars will roll, damaging the top surface of the conveyor or damaging the bars themselves. Another drawback is that it generates a lot of noise.

In view of the above, an object of the present invention is to provide a device that can efficiently eliminate the stacking of bars on a conveyor.

(Means for Solving the Problems) A feature of the technical means taken by the present invention to solve the above-mentioned problems is that the bar material conveyor 5 is arranged in a vertically stacked manner on the upper surface of the bar material conveyor 5 with the axial direction coincident. This is a device for eliminating the stacked state of three or more bars 1 placed on a rack, and is equipped with an arrangement table 51 that can be raised and lowered, and this arrangement table 51 can be raised to remove the stacked bars 1. The alignment table 51 has a receiving surface 61 that allows the alignment table 51 to be lifted up from the upper surface of the conveyor 5 and placed thereon.
The shape of the receiving surface 61 is a pair of front and rear so that it becomes a valley shape when lifting the bar 1, and becomes a mountain shape so that the bar 1 can be moved in the radial direction after lifting to eliminate stacking. The bars 55 and 56 are rotatably connected, and the bar conveyor 5
is equipped with a receiving conveyor 2 that carries bars 1 in a stacked state, and a charging conveyor 3 arranged in series on the downstream side of the receiving conveyor 2, and has a charging conveyor 3 arranged in series on the downstream side of the receiving conveyor 2. The point is that the alignment table 51 is arranged at the connection part of the conveyor 3.

(Operation) The bars 1 stacked on the upper surface of the receiving conveyor 2 are conveyed to the end of the conveyor 2 while maintaining the stacked state. Then, the stacked bars 1 at the end of the receiving conveyor 2 are moved to the alignment table 51 by raising the alignment table 51.
is placed on the receiving surface 61 of. At this time, the bar 1 is
It is placed on a valley-shaped receiving surface 61. Therefore, when the receiving surface 61 is later changed into a mountain shape, the bar 1 is reliably moved in the radial direction and the stacking is eliminated. Since this unstacking is performed above the connection between the receiving conveyor 2 and the charging conveyor 3, both conveyors 2 and 3 are not damaged.
Thereafter, by lowering the alignment table 51, the bars 1 can be placed on the charging conveyor 3 without being stacked. Incidentally, the valley shape and the peak shape of the receiving surface 61 of the alignment table 51 are obtained by rotating the pair of front and rear receiving tables 55 and 56 via a connecting portion.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The drawings relate to a conveyance line that conveys round billets as bars 1 in units of up to five pieces, and are shown in Figures 9 to 1.
1 As shown in the figure, there are three types of bar conveyor conveyors 5: a receiving conveyor 2, a charging conveyor 3, and a cutting conveyor 4, a bar 1 destacking device 6, a bar cutting device 7, and a bar 1 cutting device 7. The main components include a material weighing device 8 and a conveying roller device 9 for the bar material 1.

The receiving conveyor 2 includes four rows of support frames 10 arranged in parallel in the direction perpendicular to the conveyance direction, and a chain 12 that is wound around sprockets 11 at the front and rear ends of each frame 10, and whose upper surface serves as a mounting surface for the bar material 1. Equipped with. And one of the sprockets 11 is motor 1.
3. The chain 12 is rotationally driven by being rotationally driven via the reducer 14 and the transmission shaft 15.

As shown in FIG. 12, a stopper 16 is attached to the chain 12 of the receiving conveyor 2 to restrict the radial movement of the bar 1 placed thereon. This stopper 16 is a set of four projections 17, 18, 19, and 20 as shown, which are mounted on the chain 12 at equal intervals.

The distance A between the two central projections 18 and 19 is 2D with respect to the diameter D of the bar 1 conveyed in this embodiment.
<A<3D. As a result, when the three bars 1 are placed between the two protrusions 18 and 19, the bars 1 are stacked in upper and lower layers as shown in the figure.
In addition, the protrusions 17 and 20 at both ends and the protrusion 18 at the center,
The distance B between the bar 19 and the bar 1 is such that only one bar 1 can be accommodated, and by setting 3D<A+B<4D, the first
As shown in FIG. 8, FIG. 19, and FIG. 20, the bars 1 may be placed on the central protrusion 18 in a stacked manner. Also, the distance (C/2) from the end protrusions 17, 20 to the center of the central protrusions 18, 19 is
2.5D>C/2, the bar 1 is prevented from being placed on one side, and the bar 1 is prevented from being lifted on one side when lifted by the alignment table 51, which will be described later.

Then, for example, five bars 1 are tied together with a hanging rope 21 as shown in FIG. As mentioned above, they are stacked in upper and lower stages, but the stopper 16 restricts radial movement due to acceleration/deceleration and vibration during conveyance.
Receiving conveyor 2 due to rolling and falling steps
damage can be prevented.

The charging conveyor 3 transfers the bar material 1 conveyed by the receiving conveyor 2 from the de-stacking device 6 and conveys it. As shown in the figure, a chain 24 is provided which is wound around the front and rear ends of each frame 22 and a sprocket 23 in the middle. One of the sprockets 23 is rotationally driven via a motor 25, a speed reducer 26, and a transmission shaft 27, thereby driving the chain 24 around.

A saddle 30 is attached to the entire circumference of the chain 24 of the charging conveyor 3. The saddle 30 forms valleys 29 at equal intervals by continuously connecting chevron-shaped protrusions 28. By placing the bar 1 in the valley portion 29 of the saddle 30, the bar 1 is restricted from moving in the radial direction. Here, the troughs 29 of the saddle 30 are spaced so that only one bar 1 can be placed thereon.

The cutting conveyor 4 is the charging conveyor 3
The bar material 1 that has been transported is transferred and transported by four rows of support frames 31 arranged in parallel in the direction perpendicular to the transport direction, and as shown in FIG. A chain 33 is wound around a sprocket 32. One of the sprockets 33 is rotated via the motor 34, reducer 35, and transmission shaft 36, so that the chain 33
is driven in rotation.

A saddle 39 is attached to the entire circumference of the chain 33 of the cutting conveyor 4, and has troughs 38 formed by chevron-shaped protrusions 37 at the same intervals as the troughs 29 of the saddle 30 of the charging conveyor 3. By placing the bar 1 in the valley portion 38 of the saddle 39, the bar 1 is restricted from moving in the radial direction.

Further, the support frame 31 of the cut-out conveyor 4 is pivoted to the floor 41 so as to be able to swing freely about the horizontal shaft 40 at the delivery end side, and is pivoted to the support column 43 on the floor 41 via the link 42 at the delivery end side. It is connected to telescopic rods 45 of two air cylinders 44. The link 42 includes a trifurcated link rod 48 which is pivotally connected to the support 46 on the floor 41 at the center of the horizontal rod 47, and a link rod 49 which is pivotally connected to the trifurcated link rod 48 and the support frame 31. 45 is pivotally connected to a trifurcated link rod 48. Note that 50 is a balance weight. As a result, the carry-in end side of the cut-out conveyor 4 swings up and down as the telescopic rod 45 expands and contracts. The carry-in end of the cut-out conveyor 4, which swings up and down, is located in the conveyance direction orthogonal to the discharge end of the charging conveyor 3. As a result, when the cutting conveyor 4 is swung upward, the bar 1 on the charging conveyor 3 is lifted from the charging conveyor 3 and transferred to the cutting conveyor 4.

As shown in FIG.
3. A traveling mechanism 54 is provided.

Five alignment tables 51 are provided in the direction orthogonal to the conveyance direction, and each includes a front cradle 55, a rear cradle 56, and a double cradle 5.
5 and 56, a pair of left and right front wheels 58 are mounted on the front cradle 55, and a rear cradle 56
A pair of left and right rear wheels 59 are attached to the connecting body 5.
A pair of front and rear intermediate wheels 60 are attached to 7. A bar receiving surface 61 is formed by the upper surface of the front cradle 55 and the upper surface of the rear cradle 56. Here, the intermediate wheel 60 is located between the left and right wheels 58 and 59, as shown in the third figure. Further, the rear end of the front pedestal 55 and the front end of the rear pedestal 56 are fitted into a pivot pin 62 of the connecting body 57 so as to be rotatable about the horizontal axis.

Five support frames 52 are provided in the transport orthogonal direction,
An alignment table 51 runs on the upper surface thereof. Here, the running surfaces of the front and rear wheels 58 and 59 are flat surfaces 63. The running surface of the intermediate wheel 60 includes a first flat surface 63a having the same height as the flat surface 63, and a first inclined surface 64 that is connected to the first flat surface 63a and gradually slopes upward from the carry-in side to the carry-out side. , a second flat surface 65 connected to this, a second sloped surface 66 connected to this and gradually inclined downward toward the delivery side, and a third flat surface 67 connected to this and located above the first flat surface 63a. Consists of.

The elevating mechanism 53 allows the alignment table 51 to be raised and lowered by raising and lowering the support frame 52, and includes a pair of link rods 68 and 69 and a connecting rod 11 that connects the link rods 68 and 69.
6 and an air cylinder 70. Each link rod 6
Reference numerals 8 and 69 have a square shape, each end of which is pivotally connected to the support frame 52, and each bent portion is connected to the support column 71 on the floor 41,
72, and each other end is pivotally connected to each end of the connecting rod 116. Here, the link rod 68 on the unloading side
is pivotally connected to the support column 71 via a horizontal rod 73. The telescopic rods 75 of the three air cylinders 70 pivotally mounted on the pillars 74 on the floor 41 are connected to the link rods 68 via the horizontal rods 73.
As a result, the link rod 68 is swung by the expansion and contraction of the telescopic rod 75, and the support pedestal 52 is brought into the lowered state shown in FIG. 1 and the raised state shown in FIG. The platform 51 is also movable up and down.

The traveling mechanism 54 causes the alignment table 51 to reciprocate in the conveying direction on the support frame 52 and positions it at the carry-in side position and the carry-out side position, and includes a link 76 and two air cylinders 7. The link 76 has a first link rod 78 whose one end is pivotally connected to the alignment table 51.
and a second link rod 79, one end of which is pivotally connected to the other end of the first link rod 78.
It is pivotally connected via. The air cylinder 77 is pivotally connected to a column 82 on the floor 41, and its telescopic rod 83 is pivotally connected to an arm 84 attached to the horizontal rod 81 so as to swing together with the second link rod 79. Thereby, by expanding and contracting the telescopic rod 83, the alignment table 51 can freely move back and forth between the carry-in side in FIG. 1 and the carry-out side in FIG. 2.

Unstacking of the stacked bars 1 by the unstacking device 6 and transfer from the receiving conveyor 2 to the charging conveyor 3 are performed in the following manner.

First, the five bars 1 placed on the receiving conveyor 2 in the upper and lower stacks at the center as shown in the first figure are positioned at the conveyor delivery end as shown in the first figure, and then placed on the alignment table. 51 at the carry-in side position. In this state, the intermediate wheel 60 of the alignment table 51 is on the first flat surface 63a, and in this state, the bar receiving surfaces 61 on the front pedestal 55 and the rear pedestal 56 have troughs 61a at the center and both ends. 61b and 61c (the inclination angle of the valley portion is as shown in FIG. 5 in this embodiment), and is located below the bar 1.

Next, the alignment table 51 is raised by the lifting mechanism 53. As a result, the bar 1 is lifted from the upper surface of the receiving conveyor 2 and placed on the receiving surface 61, as shown in FIGS. 4 and 5. On this occasion,
In this embodiment, the receiving surface 61 has a valley shape not only at the center but also at both ends, and as shown in FIG. The total width F of the surface 61 is larger than the interval C between the protrusions at both ends of the stopper 16.

As a result, the five stacked bars 1 are placed on the receiving surface 6.
1, the two bars 1 at both ends are received by the troughs 61a and 61c at both ends, and the three stacked bars 1 at the center are received by the trough 61b at the center. That is, among the five bars 1 stacked on the receiving conveyor 2, the two at both ends are first moved in the radial direction by the lifting action by the receiving surface 61, and separated from the three bars 1 in the center. It can be done.

Next, the alignment table 51 is caused to travel in the unloading direction by the traveling mechanism 54. Then, since the intermediate wheel 60 first runs from the first inclined surface 64 to the second flat surface 65, the pivot pin 62 moves upward. Then,
Since the rear end of the front pedestal 55 and the front end of the rear pedestal 56 are rotatably fitted to the pivot pin 62, the rear end side of the front pedestal 55 swings upward around the front wheel 58, and 56, the front end side thereof swings upward around the rear wheel 59. As a result, the central portion of the receiving surface 61 of the bar gradually rises, and when the intermediate ring 60 reaches the second flat surface 65, it becomes chevron-shaped as shown in the sixth figure. In this case, the bar 1 is not restricted from moving in the radial direction and is forced to move in the radial direction toward both ends of the receiving surface 61 due to its own weight.
This will definitely eliminate the stacked state. Moreover, as described above, the bars 1 stacked in the central trough 61b are already separated from the bars 1 in the troughs 61a and 61c at both ends. It is said that directional movement can be performed more smoothly and reliably.

Then, as shown in the second figure, when the alignment table 51 reaches the unloading side position and the intermediate wheel 60 passes through the second inclined surface 66 and is positioned on the third flat surface 67, the pivot pin 62 is slightly lowered and the seventh As shown, the receiving surface 6
1 is a nearly horizontal plane. In this state, the receiving surface 61
is located above the carry-in end side of the charging conveyor 3.

Next, the alignment table 51 is lowered by the lifting mechanism 53. Then, the bars 1 that are no longer stacked on the receiving surface 61 are placed on the saddle 30 of the charging conveyor 3 as shown in FIG. Here, the interval G between the bars 1 at both ends of the receiving surface 61 in the state shown in FIG. It is assumed that the interval H between both ends of As a result, of the five bars 1 on the receiving surface 61, the two at both ends are securely placed in the trough 29 of the saddle 30, and the middle three are also in the state shown by imaginary lines in FIG. It is guided by the protrusion 28 and placed in the trough 29.
Thereby, the bars 1 are arranged at equal intervals.

Note that the number of bars 1 to be conveyed is not limited to five, but if there are three or more bars, they may be stacked on the receiving conveyor 2, and the stacked states are also different. In each of FIGS. 16 to 20, bar 1
A specific example of the process of eliminating stacks due to differences in the number of stacks and stacking conditions will be shown.

Next, the cutting device 7 uses a weighing device 8 and a conveying roller device 9 to weigh the bars 1 on the cutting conveyor 4 one by one.
As shown in FIG.
8.

Four cutting carts 85 are provided in the direction perpendicular to the conveyance direction.
Each has front and rear wheels 89 and 90, and bar receivers 91 and 92 on which one bar 1 can be placed are provided at the front and rear positions, respectively.

Four support frames 86 are provided in the direction perpendicular to the conveyance direction.
It has a groove shape with an upper opening, and a cutting cart 85 runs on the upper surface thereof.

The lifting mechanism 87 allows the cutting cart 85 to be raised and lowered by raising and lowering the support frame 86.
It is provided with an F-shaped link rod 93, a three-pronged link rod 94, and an air cylinder 95. F-shape link rod 9
3 has one end pivotally connected to a support frame 86, and a bent portion pivotally connected to a column 97 on the floor 41 via a horizontal rod 96. One end of the trifurcated link rod 94 is pivotally connected to the support frame 86, and the center portion is attached to the support column 94 on the floor 41.
8, and a balance weight 99 is suspended from one end. And both link rods 93, 94
are connected by pivotally connecting both ends of a connecting rod 100. And the pillar 1 on the floor 41
The telescopic rods 103 of two air cylinders 95 pivotally attached to the air cylinder 01 are connected to the link rod 93 via a horizontal rod 96. As a result, the telescopic rod 103
The link rod 93 is swung by the expansion and contraction of the support pedestal 86, and the support pedestal 86 is raised and lowered, and the cut-out cart 85 can be raised and lowered.

The traveling mechanism 88 supports the cutting cart 85 on a support frame 86.
It moves back and forth in the conveyance direction on the top and is positioned at the carry-in side position and the carry-out side position, and includes a link 104 and two air cylinders 105. link 10
4 is formed by a first link rod 106 whose one end is pivotally connected to the cutout cart 85, and a second link rod 107 which is pivotally connected to the other end of this first link rod 106. The other end is the support 10 on the floor 41
8 via a horizontal rod 109. The air cylinder 105 is pivotally connected to a column 110 on the floor 41, and its telescopic rod 111 is pivotally connected to an arm 112 attached to a horizontal rod 109 so as to swing together with the second link rod 107. As a result, the cutting truck 85 is driven to travel by the expansion and contraction of the telescopic rod 111.

The weighing device 8 measures the weight of one bar 1 placed on the pedestal 113.

The conveying roller device 9 includes a group of rollers 115 that are rotationally driven by a motor 114, and conveys the bars 1 placed thereon one by one in a direction orthogonal to the conveying direction of the conveyor 5, heating the billets. It leads to a furnace (not shown).

In order to transfer the bar material 1 to the weighing device 8 and the conveying roller device 9 by the cutting device 7, the cutting truck 85 is first lowered at the carry-in side position as shown in Fig. 15.
In this state, the bar material receiver 9 on the loading side of the cutting cart 85
1 is positioned below the bar 1 placed on the cut-out conveyor 4 and conveyed to its discharge end, which is closest to the discharge end. Next, the lifting mechanism 8
By raising the cutting cart 85 by step 7, the bar 1 located on the cutting conveyor 4 at the farthest discharge end side is
It is lifted up by the bar material receiver 91 on the carry-in side and placed thereon. Next, the cutting truck 85 is driven by the traveling mechanism 88 to its unloading side position. At this position, the bar 1 placed on the bar receiver 91 on the loading side
is located above the pedestal 113 of the weighing device 8, and then the cutting cart 85 is lowered by the lifting mechanism 87, and is placed on the pedestal 113 for weight measurement. . At this time, the cutting conveyor 4
The bars 1 placed on the top at equal intervals are conveyed to the discharge side by the equal distance. And the traveling mechanism 8
8, the cutting cart 85 positioned on the carry-in side is operated in the same manner as described above, so that the bars 1 on the cutting conveyor 4 closest to the carrying-out end are sequentially transferred to the weighing device 8.

On the other hand, the bar receiver 92 on the unloading side of the cutting cart 85
is located below the bar 1 placed on the weighing device 8 when the cutting cart 85 is at the carry-in side position, and the bar 1 is lifted and placed on the cutting cart 85 as it rises. When the cutting cart 85 is moved to the unloading position from this state, the bar 1 on the bar receiver 92 is
is located on the roller 115 of the conveying roller device 9, and the bar 1 is transferred onto the roller 115 by lowering the cutting cart 85. As a result, the bars 1 are transported one by one to the heating furnace by the transport roller device 9.

According to the embodiment described above, the conveyor 5
When transporting the bars 1, even if a large number of bars 1 are placed on the conveyor 5 at once and stacked in upper and lower tiers,
The receiving surface 61 of the sorting table 51 of the de-stacking device 6 is
When changing from a valley shape to a mountain shape, the stacking can be reliably eliminated. Moreover, by transferring the bars 1 from the receiving conveyor 2 to the charging conveyor 3 using the alignment table 51, the bars 1 can be aligned at regular intervals in the conveyance direction, and then the bars 1 can be aligned at regular intervals in the conveying direction, and then the bars 1 can be aligned at regular intervals in the conveying direction. It can be cut out one by one.

Further, in the above embodiment, the stopper 16 is provided on the receiving conveyor 2 with four protrusions 17, 18,
A large number of 19 and 20 are provided as a set, and the alignment table 5
The receiving surface 61 of No. 1 has valleys 61a and 6 at the center and both ends.
1b, 61c, and the interval E of the central trough 61b and the interval A of the central projections of each stopper 16.
are substantially coincident with each other, and the full width F of the receiving surface 61 is larger than the interval C between the protrusions at both ends. As a result, each stopper 1 on the receiving conveyor 2
When the bars 1 stacked in a stacked manner by the protrusions 17, 18, 19, 20 of 6 are lifted by the alignment table 51, the bars 1 at both ends fall into the troughs 61a, 61 at both ends.
The bar 1 on the central side is moved in the radial direction as the receiving surface 61 becomes mountain-shaped, and the stacked state is canceled. The resolution has now been completed.

In the above embodiment, a billet is used as the bar 1, but the billet is not limited thereto, and although a billet is exemplified as being conveyed in units of five bars, it may be three or more bars.

(Effects of the Invention) According to the present invention, by conveying the bars by a conveyor instead of by sliding or rolling conveyance, damage to the bars and noise can be reduced, and when cutting the bars one by one, Even if a large number of bars are placed on the conveyor at once, stacking them up and down, the stacking can be resolved by simply raising and lowering the alignment table, improving work efficiency.
This can contribute to automation and labor saving.

[Brief explanation of drawings]

The drawings relate to embodiments of the present invention, and include FIGS. 1 and 2.
The figures are side views of the de-stacking device in different states, Fig. 3 is a sectional view of the sorting cart, Figs. 4 to 8 are explanatory diagrams of the process of de-stacking the bars, and Fig. 9 is the bar material An explanatory diagram of the overall configuration of the conveyance line, FIG. 10 is a side view, FIG. 11 is a plan view, FIG. 12 is a side view of the main part of the receiving conveyor, FIG. 13 is a side view of the charging conveyor, and FIG. 14 is a side view of the cutting conveyor, FIG. 15 is a side view of the cutting device,
FIGS. 16 to 20 are diagrams showing the process of eliminating the stacked state of different bar materials, respectively. DESCRIPTION OF SYMBOLS 1...Bar material, 5...Transportation conveyor, 6...Stack removal device, 51...Alignment table, 61...Receiving surface.

Claims (1)

[Claims] 1 Three or more bars 1 are placed on the upper surface of the bar conveyor 5 in a vertically stacked manner with the same axial direction.
This device eliminates the stacked state, and is equipped with a sorting table 51 that can be raised and lowered, and when raised, the stacked bars 1 can be lifted and placed on the top surface of the conveyor 5. It has a receiving surface 61 that
The alignment table 51 has the receiving surface 61 shaped like the bar 1.
A pair of pedestals 5 at the front and rear are used to form a valley shape when lifting the bar 1, and a mountain shape after lifting to move the bar 1 in the radial direction to eliminate stacking.
5 and 56 are rotatably connected, and the bar conveyor 5 includes a receiving conveyor 2 that carries the bars 1 in a stacked state, and a receiving conveyor 2 that is connected in series on the downstream side of the receiving conveyor 2. a charging conveyor 3 arranged at A device for removing stacks of bars.