JPH0569944A - Automatic steel carrier device - Google Patents

Abstract

PURPOSE:To achieve automation of carrying a steel plate in and out of a roller conveyer. CONSTITUTION:A plurality of magnets 22 are mounted on the lower end of a lifting cylinder 13 loaded on a running flame 8, and a steel plate 1 is magnetized by the magnet 22, and is lifted thereby. The running frame 8 is run by a running cylinder 10, and the steel plate 1 magnetized by the magnet 22 is moved on a roller conveyer 3. Since this system is magnet type, in which the magnet 22 is demagnetized and is removed from the steel plate 1 after the steel plate 1 is lowered on the roller conveyer 3 by the lifting cylinder 13, handling can be carried out even when there is a hole 2 on the steel plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel material automatic loading / unloading apparatus for loading and unloading a steel material such as a steel sheet onto a roller conveyor, and particularly to a steel material suitable for loading and unloading perforated steel sheets. The present invention relates to an automatic loading / unloading device.

[0002]

2. Description of the Related Art For example, in the case of manufacturing steel frames for construction, steel sheets of various sizes are sequentially loaded onto a roller conveyor from the upstream process to the next process, and after being subjected to necessary processing, they are temporarily transferred onto the floor from the roller conveyor. Often placed on a trolley and stacked. In order to transfer the steel sheets thus stacked once to the next step, it is necessary to place them on the next roll conveyor.

Conventionally, when the steel sheets stacked on the floor or on the trolley are placed on the roller conveyor or lowered, small items such as welding backing materials that are light in weight are manually or by a vacuum suction pad. A steel plate was vacuum-adsorbed, lifted, and placed on a roller conveyor or lowered.

[0004]

However, the manual handling of the steel sheet is not only very dangerous, but also inefficient. On the other hand, when the vacuum suction type pad is used, it can be automated and is safe. However, in the case of the vacuum suction type pad, it is impossible to suck a steel plate having a hole such as a splice plate having a bolt hole used when connecting a steel frame column and a steel beam, and it cannot be lifted. The present invention solves the above-mentioned problems of the prior art, and provides a steel material automatic loading / unloading apparatus that can easily lift even a steel material with holes and place it on the roller conveyor, or unload it from the roller conveyor. The purpose is that.

[0005]

In order to achieve the above object, the present invention provides a roller conveyor for conveying a steel material, a gate type support provided in the vicinity of the roller conveyor, and an upper part of the gate type support. A horizontal beam, a pair of horizontal guide rods provided on the horizontal beam in parallel and spaced apart from each other via a horizontal guide member and having a length extending between the steel material storage space and the roller conveyor, and the pair of horizontal guide rods. A traveling frame that is supported along the traveling frame, a traveling cylinder that is connected to the traveling frame and that is disposed on the horizontal beam, and is separated in parallel from both sides of the traveling frame via vertical guide members. And a pair of vertical guide rods vertically erected, a magnet support frame provided at the lower ends of the pair of vertical guide rods, and a magnet support frame. And a plurality of support rods vertically attached to a bracket provided on the magnet support frame, and a plurality of support rods connected vertically An automatic steel material carrying-in / carrying-out device comprising a magnet mounting plate which is supported by a guide so as to be able to move up and down, and which is biased downward by a spring, and a plurality of magnets mounted on the lower part of the magnet mounting plate. Is.

According to the present invention, at least one of the roller conveyors for conveying the steel material is located just below the horizontal frame.
With respect to the two rollers, one side roller shaft is supported by a vertical long hole bearing, the roller shaft supported by the long hole bearing is biased upward through a spring, and a change in inclination of the roller shaft is detected. It is preferable to provide a load detection limit switch, and it is preferable to provide a steel material detection limit switch below the magnet mounting plate.

[0007]

EXAMPLES The structure and operation of the present invention will be described below based on examples. According to the present invention, as shown in FIGS. 1 and 2, a roller-type conveyor 4 for conveying a splice plate 1 having a hole 2 for passing a bolt as a steel material is provided with gate-shaped columns 4 facing each other in the vicinity of both sides thereof. A horizontal beam 5 that extends horizontally across the roller conveyor 3 is provided above the pillar 4. On the horizontal beam 5, a pair of horizontal guide rods 7 having a length extending between the steel material storage area of the splice plates 1 stacked on the floor 6 and the roller conveyor 3 are arranged.

A traveling frame 8 is movably supported by a pair of horizontal guide rods 7 via a horizontal guide member 9. A piston rod 10a of a traveling cylinder 10 arranged on the horizontal beam 5 is connected to a central portion of the traveling frame 8 via a floating joint 15, and the traveling frame 8 is interposed via a horizontal guide member 9. It is adapted to travel along the horizontal guide rod 7. In addition, a vertical guide member is provided from both sides of the traveling frame 8.
A pair of vertical guide rods 11 are vertically provided so as to be separated from each other in parallel via 14, and a magnet support frame 12 is attached to lower end portions of the pair of vertical guide rods 11. The magnet support frame 12 is connected to a piston rod 13a of an elevating cylinder 13 suspended from the center of the traveling frame 8 via a floating joint 15.
The magnet support frame 12 is moved up and down together with the vertical guide rod 11 guided by the vertical guide member 14.

Further, a bracket 16 is provided on the lower portion of the magnet support frame 12, and a plurality of support rods 17 are vertically provided on the bracket 16, and a magnet mounting plate 18 is attached to the lower portion of the support rod 17. While being supported by bolt heads 21 through loose through holes 20 provided in the plate,
The magnet mounting plate 18 is guided by the support rod 17 through the through hole 20 and can be moved up and down. Each support rod
Bracket 16 and magnet mounting plate 18 to surround 17
A coil spring 19 is set so as to urge the magnet mounting plate 18 downward between and. And magnet mounting plate
A plurality of magnets (for example, permanent magnets) 22 that can magnetize only one sheet is attached to the lower surface of the splice plate 1 even if the hole in the splice plate 1 has a burr, and a limit switch 23 for detecting steel material is set. is there. In this case,
When the limit switch 23 is not activated at all times, the permanent magnet is reversely excited to demagnetize it.When the limit switch 23 is activated, reverse excitation is turned off and the permanent magnet is used to magnetize the steel material to the magnet 22. To This is done in order to prevent the steel material from dropping due to the operation of the permanent magnets even if a power failure occurs.

At least one of the rollers 3a arranged on the roller conveyor for conveying the steel material, directly below the horizontal beam 5.
As shown in FIG. 3, the two rollers 3a 'support the roller shaft 3b on one side by a long hole bearing 25 provided with a long hole 24 in the vertical direction. The roller 3b supported by the long hole bearing 25 is biased upward by a coil spring 26 to be tilted, and a load detection limit switch 27 for detecting a tilt change of the roller shaft 3b is provided. There is.

Next, the operation of the present invention will be described. Here, the splice plate 1 stacked on the floor 6 is used.
The case where the sheets are sequentially carried in from the floor 6 onto the roller conveyor 3 in order to remove the burrs formed in the holes 2 will be described. First, in FIGS. 1 and 2, when the piston rod 13a of the lifting cylinder 13 mounted on the traveling frame 8 waiting above the splice plates 1 stacked on the floor 6 is operated in the extending direction, 8. A magnet support frame 12 provided at the lower end of a vertical guide rod 11 guided by a vertical guide member 14 provided at
Goes down.

When the magnet support frame 12 descends and comes into contact with the uppermost splice plate 1 on which magnets (permanent magnets) 22 are stacked, the coil spring 19 bends and the through hole 20 provided in the magnet mounting plate 18 is opened. Support rod 17
It approaches the bracket 16 side while being guided by. At this time,
Limit switch 23 for steel detection is splice plate 1
The surface of the magnet is detected and detected, and the operation of the lifting cylinder 13 is stopped. At the same time, the reverse excitation of the magnet 22 is cut off and the permanent magnet is utilized to attach only the uppermost splice plate 1 to the magnet 22. Magnetize.

Next, the piston rod 13a of the lifting cylinder 13
When it is operated in the contracting direction, the vertical guide rod 11 guides the vertical guide rod 11 and ascends together with the magnet support frame 12. During this ascending process, the magnet mounting plate 18 returns to the state of being supported by the bolt head 21 provided at the lower portion of the support rod 17. Then, the splice plate 1 magnetized by the magnet 22 rises to a set level above the rollers 3a arranged on the roller conveyor 3.

[0014] The piston rod of the traveling cylinder 10 continues
When the 10a is actuated in the contracting direction and moved by a preset stroke, the horizontal guide member 9 provided on the traveling frame 8 moves along the horizontal guide rod 7 on the horizontal beam 5 and magnetizes the magnet 22. The spliced plate 1 is moved above the line of the roller conveyor 3 and stopped.

At the same time, when the elevating cylinder 13 is operated in the extension direction to lower the splice plate 1 magnetized by the magnet 22, the splice plate 1 comes into contact with the roller 3a in the stopped state. Figure 3 (a)
The rollers 3a arranged on the roller conveyor 3 as shown in FIG.
At least one of the rollers 3a 'is a roller shaft 3 on one side.
b is supported by a long hole bearing 25, is biased upward by a coil spring 26, and is inclined. Therefore, when the splice plate 1 that descends while being magnetized to the magnet 22 comes into contact with the roller 3a ', the roller 3a' that is inclined is shown in FIG.
It becomes horizontal as shown in (b). Thus, since the tip end of the load detection limit switch 27 is pushed downward at the same time as the coil spring 26 urging the roller shaft 3b is bent, the load of the splice plate 1 on the roller 3a 'is detected.

When the load detection limit switch 27 is actuated, the permanent magnet of the magnet 22 is reversely excited to demagnetize it, and the piston rod 13a of the lifting cylinder 13 is actuated in the contracting direction to separate the magnet 22 from the splice plate. At the same time, the lifting cylinder 13 causes the magnet 22
To a preset level. In this way, the magnet 22 rises to the set level, and at the same time, the piston rod 10a of the traveling cylinder 10 is actuated in the extension direction to stack the magnets 22 on the splice plate 1.
It is moved to a preset position above and temporarily held.

Rollers 3 arranged on the roller conveyor 3
By driving a, the splice plate 1 is conveyed in the direction of the arrow in FIG. 2, here in the direction of the deburring machine (not shown), and when it leaves the roller 3a ', the coil spring 26 is attached from the horizontal state shown in FIG. The roller 3 is urged through the roller shaft 3b.
a'returns to the inclined state. At this time, it is detected that the tip of the load detection limit switch 27 moves upward and the splice plate 1 is no longer on the roller 3a '. By detecting the unloaded state on the roller 3a 'by the limit switch 27 as described above, the piston rod 13a of the lifting cylinder 13 is again actuated in the extension direction, and is moved onto the roller conveyor 3 of the next splice plate by the same procedure as described above. Start loading work.

In the above-described embodiment, the case where the splice plates 1 stacked on the floor 6 are carried into the roller conveyor 3 has been described. Conversely, the splice plates 1 mounted on the roller conveyor 3 are placed on the floor 6 or Needless to say, the operation of stacking on a dolly or the like can be performed in the same manner. The traveling cylinder 10 and the lifting cylinder 13 may be hydraulic type or pneumatic type, and in some cases, a chain type driven by a motor may be used instead of the cylinder. In the present invention, the cylinder means these known moving devices. It is included.

In the above-mentioned embodiment, the horizontal beam provided on the upper part of the gate type support is arranged so as to straddle the roller conveyor. However, the gate type support is provided at the entrance end or the exit end of the roller conveyor. It is also possible to carry in or carry out steel materials on the roller conveyor by exposing the horizontal beam from this gate-shaped strut in the longitudinal direction of the roller conveyor in a cantilevered state, and installing multiple bases on the conveyor line of the roller conveyor. The steel material can be fully loaded and unloaded.

[0020]

As described above, according to the present invention, it is possible to freely carry in or out a holeless steel material or a perforated steel material onto the roller conveyor.
Work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing a steel material loading / unloading device according to the present invention.

FIG. 2 is a side view showing an arrow AA of FIG.

FIG. 3 is a front view showing a roller structure according to the present invention.

[Explanation of symbols]

 1 Splice Plate 2 Holes 3 Roller Conveyor 4 Gate Column 5 Horizontal Beam 6 Floor 7 Horizontal Guide Rod 8 Travel Frame 9 Horizontal Guide Member 10 Travel Cylinder 11 Vertical Guide Rod 12 Magnet Support Frame 13 Lift Cylinder 14 Vertical Guide Member 15 Floating joint 16 Bracket 17 Support rod 18 Magnet mounting plate 19 Coil spring 20 Through hole 21 Bolt head 22 Magnet 23 Steel material limit switch 24 Long hole 25 Long hole bearing 26 Coil spring 27 Load detection limit switch

Claims (3)

[Claims] 1. A roller conveyor that conveys steel, a gate-shaped support provided near the roller conveyor, a horizontal beam provided above the gate-shaped support, and a horizontal guide member on the horizontal beam. A pair of horizontal guide rods which are provided in parallel and spaced apart from each other and have a length extending between the steel material yard and the roller conveyor, a traveling frame movably supported along the pair of horizontal guide rods, and the traveling frame. And a pair of vertical guide rods vertically spaced apart from each other in parallel via vertical guide members from both sides of the traveling frame. Of the magnet support frame provided at the lower end of the vertical guide rod of the above, and at the center of the traveling frame while being connected to the magnet support frame. A vertically rising and lowering cylinder, a plurality of support rods vertically mounted on a bracket provided on the magnet support frame, and a vertically supported guide rod supported by the plurality of support rods and downward by a spring. A steel material automatic loading / unloading device comprising a biased magnet mounting plate and a plurality of magnets mounted below the magnet mounting plate. 2. At least one roller directly below a horizontal frame in a roller conveyor that conveys steel materials, has a roller shaft on one side supported by a vertical long hole bearing, and the roller shaft supported by the long hole bearing is a spring. The automatic loading and unloading device for steel materials according to claim 1, further comprising a load detection limit switch for detecting an inclination change of the roller shaft while urging the roller shaft upward. 3. The automatic steel material loading / unloading device according to claim 1, wherein a limit switch for detecting a steel material is provided below the magnet mounting plate.