KR850000405B1 - Continuous working process of steel bars for reinforced concrete - Google Patents

Abstract

The equipment for continuous working of steel bars is composed of a material transferring device that supplies an endless steel bar, pressing rollers, transferring rollers to convey or stop the the steel bars intermittently, a cutter, a carrier, an arranging device, a bending device and a packing device. The endless steel bar is cut to the desired length by the cutter. The cut steel bars are arranged in order, and bent into the desired shape by the bending device.

Description

Continuous processing method of steel bars for reinforced concrete

1 is a working flow diagram for carrying out the machining process of the apparatus according to the present invention.

2 is a plan view showing the bundles of steel bars being tied by a stacker and a conveyor device of the device according to the invention.

3 is a front view of the apparatus of FIG.

4 is a side view of the bundle device of the device of FIG.

5 is a partial side cross-sectional view of the bending machine of the device according to the invention.

FIG. 6 is a plan view of the apparatus taken along line VI-VI of FIG. 5. FIG.

FIG. 7 is a plan view showing an operating state of the apparatus of FIG.

The present invention relates to a continuous processing method of steel bars for reinforced concrete, and more particularly, to a method capable of automatically processing steel bars, saving time required for work and reducing loss of materials.

Machining of steel bars for reinforced concrete has been generally performed by the operator cutting and bending the steel bars one by one according to the work drawing or model using simple cutters and bending machines provided near the reinforced concrete workshop. This work was extremely low and very complicated because the operator had to do it manually using a measuring instrument or protractor. In addition, the material used in the operation typically uses a steel bar having a length of 5m to 10m, so that if the material is cut to the desired length, large and small chips are inevitably generated, resulting in a considerable amount of material loss. there was.

In general, the working steps of the bars, such as sorting, bundling and placing, are carried out in the final stage after the machining of the bar is completed, which not only becomes a serious obstacle to the automation of the work but also takes a long time. Since most of the work depends on manual work, the variation in the accuracy of the finishing work is highly dependent on the skill of the individual operator and therefore very inefficient.

Therefore, it is an object of the present invention to provide a continuous processing method of steel bars for reinforced concrete that can solve the problems of the prior art.

Another object of the present invention is to provide a continuous processing method of steel bar for reinforced concrete that can easily perform the automation of work.

It is yet another object of the present invention to provide a method for continuously processing steel bars for reinforced concrete that can effectively use materials without producing large and small chips.

Still another object of the present invention is to provide a continuous processing method of steel bars for reinforced concrete, which can greatly reduce the time required for work.

It is yet another object of the present invention to provide a continuous processing method of steel bars for reinforced concrete with high efficiency as well as high accuracy for finishing operations.

In order to achieve the above objects, the present invention provides a feeder for transferring endless bar material, a cutter for cutting the endless bar material to a predetermined length, and stop by transferring the endless bar material by a predetermined length with respect to the cutter. It provides a continuous processing device of steel bars for reinforced concrete, including a device for pulling together, a plurality of the plurality of bars cut together to bundle together, and a bundle device for tying the plurality of the plurality of steel bars together.

Advantages of the present invention and the above and other objects will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

In FIG. 1, the material conveying apparatus 1 consists of a winding reel 3 in which the bar material is wound in the form of a coil, and a pair of sunrise rollers 5 operated by the motor 4. The winding reel 3 is arranged on the left and right, and the bar material 2 is pulled out while being unwound by the take-out roller 5. The two bar materials 2 thus drawn out are arranged in a line with each other and then supplied to the continuous straight line forming portion 6.

This continuous straight line forming portion 6 is composed of a plurality of horizontal roller mechanisms 7 arranged in a zigzag form, and is drawn out from each winding reel 3 and has a continuous straight shape of the bar material 2 having a curved portion. Correct.

Downstream of the continuous straight line forming section 6 is a pair of feed rollers 9 which are operated by a motor 8 which rotates and stops intermittently, and these feed rollers 9 are formed of a straight bar material ( 2) transfer the cutter (10). The cutter 10 cuts the bar material into a bar 11 having a predetermined length. The predetermined cutting length of the bar 11 is determined by the number of revolutions of the transfer roller 9. In other words, the pair of feed rollers 9 rotate at a speed corresponding to the desired cutting length to stop the rotation after transporting the endless bar material 2 and the cutter 10 is scheduled during the stop of the feed rollers 9. It is operated to cut the bar material 2 into a bar 11 having a length.

The sorting device 12 is installed at the rear of the cutter 10, and the stackers 13 and 13a are disposed at both left and right sides of the sorting device 12. The inclined portions 15 and 15a are formed on the upper surfaces of the stackers 13 and 13a so as to be inclined downward from the cutting position of the cutter 10, and the stoppers 14 and 14a are inclined portions 15 and 15a. The bed is installed to be retractable at appropriate intervals. The sorting device 12 divides the cut bar 11 which requires bending work toward the stacking machine 13 and the bar 11 that does not require bending work, i.e., the straight bar 11 that is used as it is, into the stacking machine 13a. give. In this way, the steel bars 11 classified into each of the stackers 13 and 13a are rolled down on the inclined portions 15 and 15a and are caught by the stoppers 14 and 14a and then collected in the required number. After the required number of bars 11 have been collected, the stoppers 14, 14a are retracted so that the plurality of bars 11 roll down integrally to the subsequent stoppers 14, 14a of the next step where the clouds stop. After these sequences are repeated one after another, the pair of bundles 11 of bars 11 on the loader 13a are moved to a bundle device 16 where they are bundled in a cylindrical form and tied by wire or string. By the marking device 17 the necessary markings such as material, diameter, form and grade are applied to the bar 11 and the bar is then taken out for shipment.

On the other hand, the bar 11 gathered on the other stacker 13 is arrange | positioned in plate shape by the plate-shaped arrangement 19 comprised by the plurality of pair of rollers 18. As shown in FIG. The plate-like arrangement 19 fixes the plurality of bars 11 in a row between the pairs of rollers 18 to arrange them flat. The bundles of steel bars 11 arranged in this way are transported to the binding machine 20 by themselves and are tied there by flat shapes or wires or strings. The bundles of bars 11 bundled in this way are subjected to the markings 21 by means of marking devices 21 such as material, diameter, form and grade. After the marking operation is finished, the bundled bundle 11 is conveyed to the bending machine 22 where it is bent to the desired shape and size by the bending operation while keeping it flat.

Although the endless bar material 2 is withdrawn from the winding reel 3 wound in the form of a coil, it is also possible to produce the bar from a straight bar material having a predetermined length. As shown in the upper left portion of FIG. 1, a plurality of bar materials 102 having a predetermined length are placed on the conveyor 103 and transferred one by one from there. The end and the end are welded to each other by the welder 104 while each of the bar materials 102 of the predetermined length is conveyed in the longitudinal direction.

The series of work process steps of the aforementioned steel bar for reinforced concrete may be controlled by the controller 27 based on the data processed as the computer 24. For example, according to the bar layout 23, the computer 24 processes the data necessary for the machining of the bar 11 to produce the work order card 25 or the tape 26, and then the controller 27 By inputting to the controller 27, an instruction is generated as indicated by an arrow in the drawing to control the work process.

Now, the endless bar material 2, which is unwound from each winding reel 3 and converted into a continuous straight form by a horizontal roller mechanism 7, has a feed roller 9 which is instructed by the control, 27; The cutter 10 is supplied to the cutter 10 by a length determined by the take-out roller 5 which operates to follow the feed roller 9. In accordance with the above-described movement of the material, the bar material 2 still wound on the take-up reel 3 is pulled out, and is converted into a continuous straight form by the horizontal roller mechanism 7 while being transported to the cutter 10. .

After the bar material 2 has been conveyed by the length indicated by the cutter 10, the transfer roller 9 and the take-out roller 5 stop working. This stop causes the controller 27 to send instructions to the cutter 10 so that the cutter 1 cuts the bar material 2 according to the instructions to form a straight bar 11 having a desired length. do.

The bar formed by cutting in this way is placed on the sorting device 12. If the bar is used as the straight tongue itself, it is classified on the loader 13a according to the instructions of the controller 27, and when it is to be bent, it is classified on the loader 13 according to the instructions of the controller 27. .

The above-described processes are repeated according to the instructions from the controller 27 until the required number of bars 11 having the desired length are obtained.

If the bars with the same length are aligned on the stacker 13 or 13a as many times as necessary, the controller 27 feeds the feed roller 9, the take-out roller 5 and the cutter 10 to produce the bars with different lengths. Send instructions When the bars 11 produced by the cutting operation described above are used in the straight form, the controller 27 sends an instruction to the bundle device 16 to bundle the bars 11 on the loader 13a and at the same time the bars 11. Instructions are sent to the marking device 17 to apply the necessary markings. Thereafter, the bars 11 are taken out for shipment.

On the other hand, in the case where the bending operation is performed on the bar 11 generated by the cutting hole, the bars 11 flatly arranged by the plate-shaped arrangement 19 according to the instruction of the controller 27 are bound to the binding machine 20. ) And are tied with wires or strings while maintaining a flat state, and then applies the necessary markings by the marking device 21.

The bars 11 which are arranged flat in this way are transferred to the bending machine 22 according to the instructions of the controller 27 and are bent and carried out in the desired shape and size while maintaining the flat state there.

Instead of tying with wires or strings as used in the embodiments described above, it is also possible to bundle the bundles of steel bars 11 by welding.

2, 3, and 4 show an embodiment in which the bundles of the bar 11 are bundled by welding. As shown in these figures, the conveyor 30 is arranged at the bottom of the stacker 13 to convey the bundles of flattened bars 11 in the longitudinal direction. The conveyor 30 is composed of a support frame 31 and a plurality of transport rollers 32 arranged on the upper surface of the support frame, and the welding device 33 is disposed next to the end portion of the conveyor 30. The welding apparatus includes a support 34 inserted into both sides of the conveyor 30 and a temporary 35 provided to be fixed to the support 34 to cross over the conveyor 30. The two rails 36 are fixed on the upper surface of the temporary construction 35 and cross in the transverse direction with respect to the conveying direction of the conveyor 30. The welder 37 is reciprocable on these rails 36. The tip position of the welding torch of the welder 37 can be adjusted in the vertical direction by the screw mechanism 38. The pressing device 40 for pressing the upper surfaces of the plurality of bars 11 arranged in a flat manner is disposed at the front of the temporary construction 35. The second conveyor 42 is connected to the end portion of the conveyor 30 to carry the bar 11 tied together by welding. The second conveyor 42 also consists of a support frame and a plurality of transport rollers 43 arranged on the upper surface of the support frame.

In the above-mentioned bundle device, a plurality of steel bars 11 conveyed from the loader 13 to the conveyor 30 in a plate-like state are transported until the desired welding position is placed directly under the welding torch 38. Transported by 32 and stopped there. Next, after the pressing device 40 presses and fixes the upper surface of the bar 11, the tip of the welding torch 38 is screwed so as to maintain a proper distance between the surface and the end of the bar 11 in the plate state. It is adjusted by the mechanism 39. While the welder 37 moves over the rail 36, the tip of the welding torch 38 moves transversely to the longitudinal direction along the surface of the plate-shaped bar 11 and thus Weld the parts adjacent to each other. In this case, welding conditions such as the moving speed of the welding torch 38, the welding voltage, the welding current, etc. are appropriately selected to freeze sufficient weld joint strength, so that the plurality of bars 11 are in a plate-like state during the bending operation. It can be maintained.

In this way, after the welding operation is completed in the first welding position, the pressing device 40 is raised and the conveying roller 32 operates to move the plate-shaped bar 11 to the next welding position, after which Repeated welding sequence is repeated.

The welding method may be appropriately selected from among welding methods such as CO ₂ gas welding, plasma gas welding, resistance seam welding and the like.

Compared to bundles using wires or strings, bundles by welding can bundle more bars at once and greatly reduce the labor required. In addition, since no wires or strings are used which may interfere with subsequent bending operations, the bundle by welding has the advantage that subsequent bending operations can be performed easily and simply.

5, 6 and 7 show a bending machine. 5 and 6, the lower frame 52 is fixed on the bottom 50 and the beam 53 is fixed to the fixing frame 51 above the lower frame 52. The lower frame 52 and the beam 53 are provided with rotation limiting mechanisms 54a and 54b, respectively, and bosses 55a and 55b are respectively provided. The central shafts 56a and 56b each having an inclined tip are resiliently fixed in these bosses 55a and 56b and are actuated by respective hydraulic rams 57a and 57b.

The rotation limiting mechanisms 54a, 54b are arranged parallel to each other, and the pair of rollers 58a, 58b provide their axes to coincide with the axes of the central axes 56a, 56b.

The taper hole 59 is drilled at a position facing the center axes 56a and 56b on the pair of rollers 58a and 58b, and the center axis of the taper holes 54a and 54b is tapered. It is sandwiched in the holes 59. The rollers 58a and 58b are connected to the two connecting plates 61 and 62 so as to pivot about the roller shafts 60a and 60b while maintaining a gap enough to allow the bar 11 to pass therebetween. It is supported up and down by. Between these connecting plates 61 and 62 is inserted a planetary gear mechanism 63 configured such that the pair of rollers 58, 58b (which act as a central roller and a rotary roller with respect to each other).

The gears 64a and 64b meshed with each other are fixed to the axes of the rollers 58a and 58b, respectively, and one of these gears 64a and 64b is a hydraulic motor fixed to the lower connecting plate 62. It meshes with the drive gear 65 fitted to the output shaft 67 of 66.

According to the arrangement of the respective mechanisms described above, the rollers 58a and 58b can be disassembled from the rotation limiting mechanisms 54a and 54b together with the connecting plates 61 and 62 and the planetary gear mechanism 63 as an integrated facility. have.

If the dimensions of the rollers 58a and 58b are given in advance, the spacing between the center sides 56a and 56b can be adjusted so that the rollers 58a and 58b can be easily replaced according to the desired bending shape.

On the other hand, the transfer mechanism 68 is disposed at the rear of the rollers 58a and 58b as shown in FIG. 7 to transport the bar to the bending machine. The conveying mechanism 68 is composed of a pair of conveying rolls 69 and a guide roller 70 disposed in the front portion, one of the conveying rolls 69 can be moved according to the diameter of the bar 11. .

Next, how the bars 11 are bent in a crank shape will be described.

For example, in order to bend the bar 11 in the direction of the arrow of FIG. 7, the center side 56a of the rotation limiting mechanism 54a is driven by the pressing force of the hydraulic ram 57a, as shown in FIG. 58a) is inserted into the raper hole 59 to make pressure contact with the hole. In this way, the roller 58a is fixed while the other roller 59b is free.

As a result, the bar 11 is bent as the free roller 58b, which is a rotating roller, rotates with respect to the fixed roller 58a, which is a central roller, as shown in FIG. 7, as if wound on the fixed roller 58a. .

After the bar 11 is bent in the A direction in this manner, the hydraulic motor 66 is rotated in reverse to allow the free roller 58b to return to its original position and the distance shown in FIG. 7 by the transfer mechanism 68. Carries the bar 11 by (L).

While the bar 11 is transported by the distance L, the central axis 54b of the rotation limiting mechanism 54b is inserted into the taper hole 59 of the roller 58b to make pressure contact with the hole, and the central axis 56a. Is separated from the roller 58a so that the center roller and the rotating roller are switched.

Then, as the drive gear 65 of the hydraulic motor 66 is rotated again in the direction of the arrow C as shown in FIG. 6, the gear 64a of the free roller 58a is indicated by the dotted arrow E. The gear 64b of the fixed roller 58b is rotated while being conveyed in the direction of. Accordingly, the free roller 58a rotates along the axis as well as rotates in the direction of the dotted arrow B with respect to the axis, and the hydraulic motor 66 is also rotated in the direction of the dotted arrow B.

As a result, the bar 11 shown in FIG. 7 is bent as the free roller 58a, which is a rotating roller, rotates about the fixed roller 58b, which is a central roller, as if it is wound on the fixed roller 58b.

After the processes described so far have been completed, the hydraulic motor 66 is reversed to return the free roller to its original position. When the bar 11 is conveyed by the transfer mechanism 68 in this state, the bar 11 bent in a crank shape can be obtained without reversing the bar.

In addition, the bending angle of the bar 11 can be arbitrarily determined by adjusting the rotation angle of the hydraulic motor 66. It is also possible to use an electric motor or other operating machine instead of the hydraulic motor 66.

As described above, in forming a plurality of bends having various bending directions in the bar, the present invention can instantaneously form bends having various bending directions without reversing the bar.

Since a plurality of bars can be arranged in a plate-like state according to the present invention and can simultaneously form a plurality of bends having various bending directions, the production efficiency of the bars can be significantly improved.

Moreover, according to the present invention, since the endless steel bars are transported by a transfer device that intermittently adjusts to stop and advance the predetermined distance and are cut as a cutting machine, waste of material by cutting work can be eliminated and cutting work can be continuously performed. You can do it.

In the present invention, the bars are bundled together in a plate shape after being cut to a desired length and then bent into a desired shape so that the bars of the desired shape can be bent together. Therefore, compared with the prior art, the bending work can be done more easily and the time required for the work can also be greatly reduced.

Therefore, the present invention can produce not only steel bars but also in large quantities through continuous operation.

Of course, the invention is not limited to the above-described embodiments and may be variously modified within the scope of the appended claims.

Claims (1)

The bar drawn out from the material transfer device 1 between the material transfer device 1 for supplying the endless bar material 2 and the cutter 10 for cutting the bar material 2 into a bar 11 of a predetermined length. A continuous straight forming portion 6 for forming the material 2 in a continuous straight shape and a pair of feed rollers 9 for intermittently feeding and stopping the bar material 2 to a predetermined length with respect to the cutter 10. In order to install the, in the rear of the cutter 10, the plate-like arrangement 19 for arranging the required number of bars 11 gathered on the stacker 13 in a flat form and the flat plate-shaped bar 11 bundle Continuous processing method of the steel bar for reinforced concrete, characterized in that to sequentially arrange the binding device (20) for tying in a flat state.

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