JP5609745B2 - Gas cutting device - Google Patents

Description

  The present invention relates to a gas cutting device for cutting a slab and other slabs.

As is well known, a continuous cast slab continuously drawn in a continuous casting machine facility is cut into a slab such as a slab or bloom, and then conveyed to a rolling process (for example, Patent Documents). 1 and 2).
The slab is cut into a predetermined length by, for example, a gas cutting device so as to be in a certain weight range before rolling in the rolling process.

  In general, in a gas cutting apparatus, a slab is transported by a transport roller. Therefore, the cutting part (scheduled part of cutting) of the transported slab is positioned in the gap between the transport rollers so that the transport roller is not damaged. It is necessary to cut the gas.

JP 2010-188371 A JP 2000-351209 A

However, when a plurality of cutting parts are set in the slab, it is generally difficult for all cutting parts to be located in the gaps between the conveying rollers. For cutting parts that are not located between the conveying rollers, It was necessary to cut the sheet after it was individually positioned between the conveying rollers.
Therefore, even when the gas cutting device is provided with a plurality of gas blowing pipes, it is difficult to improve productivity in cutting a slab in which a plurality of cutting parts are set.

  Therefore, for a slab set with a plurality of cutting parts, the productivity when gas-cutting the slab regardless of the position relative to the transport roller, and hence the number and position of the cutting parts set for the slab. There is a strong technical demand for a gas cutting device that can improve the efficiency.

  The present invention has been made in consideration of such circumstances, and efficiently cuts the slab regardless of the position relative to the conveyance roller, and hence the position and number of cutting sites set in the slab. Then, it aims at providing the gas cutting device which can improve productivity.

In order to solve the above problems, the present invention proposes the following means.
The invention according to claim 1 is a gas cutting device for cutting a cutting portion set in a slab, wherein a plurality of transport rollers for placing and transporting the slab, and in a transport direction of the slab A movable carriage that is movable, a gas blowing pipe that moves along the cutting site and cuts the cast piece, and a cast piece stop means that stops the cast piece at a predetermined position. And a lifter that lifts the slab from the transport roller, and a control unit, wherein the control unit is configured to separate the slab from the transport roller by the lifter when cutting the slab. It is characterized by being.

  According to the gas cutting device of the present invention, when the slab is cut, the slab is separated from the transport roller by the lifter. Regardless of the position, the slab can be gas cut. As a result, the slab can be efficiently cut.

  The invention according to claim 2 is the gas cutting device according to claim 1, comprising a plurality of the movable carriages, and when there are a plurality of cutting parts to which the movable carriage can correspond to the cast slab, The control unit is configured to dispose the movable carriage at a position where the gas blowing pipe corresponds to the cutting portion, and to cut the cast piece after the cast piece is separated from the transport roller by the lifter. It is characterized by.

  According to the gas cutting device of the present invention, since the plurality of moving carriages are provided, the moving carriage is made to correspond so that the gas blowing tube corresponds to the cut portion of the casting, and the casting piece is separated from the conveying roller by the lifter. By doing so, a plurality of cutting sites can be gas-cut simultaneously, regardless of the relative positions of the cutting site and the conveying roller. As a result, the time required for cutting one slab can be shortened, and the slab can be efficiently gas-cut.

  A third aspect of the present invention is the gas cutting device according to the first or second aspect, wherein a cutting station is formed in which the interval between the conveying rollers adjacent to each other is wider than the interval between the other conveying rollers. It is characterized by being.

  According to the gas cutting device according to the present invention, since the cutting station is formed, when the cutting site is arranged corresponding to the cutting station, the slab can be efficiently cut without lifting up. Can do.

  Invention of Claim 4 is a gas cutting device of Claim 3, Comprising: When the cutting | disconnection site | part of the said slab is one, the said control part is the said gas blowing pipe corresponding to the said cutting station. The movable carriage is disposed at a position, and the slab is configured to stop and cut at a position where the cutting portion corresponds to the cutting station.

  According to the gas cutting device according to the present invention, the gas blow pipe is disposed at a position corresponding to the cutting station, and the slab is stopped at a position where the cutting portion corresponds to the gas blow pipe, and then the gas is cut. The gas can be cut efficiently. In addition, since the chips generated by cutting can be concentrated at the cutting station, the chips can be easily and efficiently collected.

  The invention according to claim 5 is the gas cutting device according to claim 3, comprising a plurality of the moving carriages, and when the cast piece has a plurality of cutting parts that can be accommodated by the moving carriage, The control unit moves the gas blow pipe so as to correspond to the cutting station when all the cutting sites set on the slab on the transport roller can be arranged corresponding to the cutting station. A cart is disposed, and the slab is stopped and cut so that all the cutting parts correspond to the cutting station.

  According to the gas cutting device of the present invention, when all the cutting parts of the slab on the transport roller can be arranged corresponding to the cutting station, the movable carriage is arranged so that the gas blowing pipe corresponds to the cutting station. Since the slab is stopped and cut so that all the cutting sites correspond to the cutting station, all the cutting sites can be cut simultaneously without lifting the slab. As a result, the slab can be efficiently cut.

According to the gas cutting device of the present invention, it is possible to cut the slab also on the transport roller by separating the slab from the transport roller by the lifter, and as a result, the slab is efficiently cut. be able to.
Moreover, when the some mobile trolley is provided, the slab from which the number and location of a cutting | disconnection site | part can differ can be cut | disconnected efficiently.

It is a perspective view showing the outline of the gas cutting device concerning one embodiment of the present invention. It is a figure explaining operation | movement of the gas cutting device which concerns on one Embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a diagram showing an outline of a gas cutting device according to an embodiment of the present invention. Reference numeral 1 indicates a gas cutting device, and reference W indicates a slab.

  The gas cutting device 1 has a plurality of transport rollers 10 for placing and transporting the slab W, and, for example, three movable carriages 20, 30, 40 that can travel in the transport direction of the slab W. The slab W is placed on each movable carriage 20, 30, 40 and moved together with each movable carriage 20, 30, 40, and moved in the width direction of the slab W along the cutting portion of the slab W, thereby cutting the slab W. Gas blow pipe units (gas blow pipes) 22, 32, and 42, slab stop means for stopping the slab W at a predetermined position, a lifter 50 that lifts the slab W away from the conveying roller 10, and a cutting station 55 And a control unit 60.

The conveyance roller 10 is configured by arranging a plurality of rotation shafts orthogonal to the conveyance direction of the slab W and arranging a plurality of rotation axes in the conveyance direction of the slab W.
For example, the transport rollers 10 are each connected to a drive motor (not shown) and can be independently rotated.

  The movable carriages 20, 30, and 40 include a beam disposed on the traveling rail 18 disposed along the conveyance direction of the slab W, and left and right saddles on which the beam is placed, and the slab is placed on the traveling rail. It moves in the conveyance direction F, R direction of W.

  The gas blowing unit 22 includes two gas blowing tubes 22L and 22R. The gas blowing tube 22L is arranged on the left side in the conveying direction of the slab W, and the gas blowing tube 22R is arranged on the right side in the conveying direction of the slab W. Further, the gas blowing pipes 22L and 22R are moved toward the center side of the slab W along the beam to cut the cutting portion.

  The gas blowing units 32 and 42 include two gas blowing tubes 32L and 32R and gas blowing tubes 42L and 42R, respectively, and operate in the same manner as the gas blowing tubes 22L and 22R.

The lifter 50 includes a base plate 51 and a plurality of push-up plates 52 erected on the base plate 51. The lifter 50 is disposed below the transport roller 10 and is moved up and down by a drive source (not shown).
The push-up plate 52 is disposed, for example, between adjacent transport rollers 10 and is positioned below the upper surface when lowered.

  The cutting station 55 can prevent the transport roller 10 from being damaged even if the gap between the adjacent transport rollers 10 is increased and the slab W is placed on the transport roller 10 and gas is cut. In this embodiment, for example, it is provided at three locations.

  The control unit 60 includes a transport roller 10, a drive source for the lifter 50, each moving carriage 20, 30, 40, the gas blowing tube units 22, 32, 42, and position detection means (not shown) necessary for driving them. The slab W connected to the sensor of the above and via the cable 61 is detected, and the slab W conveyed from the previous process (not shown) is detected. When the slab W reaches a predetermined position, the rotation driving of the transport roller 10 is stopped.

  Moreover, the control part 60 is provided with the slab stop means for stopping the slab W at a predetermined position, and the slab stop means is, for example, power to the transport roller 10 that contributes to transport of the slab W. It is comprised by position control of the slab W by control.

  When the slab W is stopped, when the plurality of cutting parts are set in the slab W, the control unit 60 determines whether all the cutting parts coincide with the cutting station 55, and all the cutting parts are determined. Is able to match the cutting station 55, all cutting sites are stopped correspondingly with the cutting station 55, and if all cutting sites do not match the cutting station 55, that is, any cutting site is a cutting station. If it does not coincide with 55, the lifter 50 is raised to lift the slab W to be separated from the conveying roller 10.

  When the slab W is stopped and can be cut, the movable carriages 20, 30, and 40 are moved to a predetermined position (a position corresponding to the cutting site) as necessary. In addition, you may make the mobile trolley | bogie 20,30,40 wait in a cutting position previously.

When the movable carriages 20, 30, and 40 are moved to predetermined positions, the gas blowing tube units 22, 32, and 42 are moved from the left and right sides of the slab W toward the center, and the cutting portion is gas-cut.
The gas blow pipes 22L, 22R, 32L, 32R, 42L, and 42R constituting the gas blow pipe units 22, 32, and 42 wrap at the center portion to reliably cut the slab W, and after the cutting is completed, the gas blow pipes 22L, 22R, 32L, 32R, 42L, and 42R return to their starting positions.

  Hereinafter, the cutting operation by the gas cutting apparatus 1 will be described with reference to FIG. 2A to 2D are views showing the first to fourth cutting operations of the gas cutting apparatus 1.

[First cutting operation]
For example, as shown in FIG. 2 (A), the first cutting operation is such that two slabs W each having one cutting site are transported to the gas cutting device 1, and the cutting site of each slab W is cut. The example applied when it can arrange | position to the cutting station 55 is shown.
In this case, of the mobile carts 20, 30, 40, for example, the mobile carts 20, 40 are made to wait at each cutting station 55.
Next, when the cutting part of each slab W reaches the cutting station 55, the corresponding conveyance roller 10 is stopped, and the gas blowing tube units 22 and 42 are moved along the cutting part to cut the slab W. To do.
According to the first cutting operation, two cutting sites can be cut at the same time, so the productivity when cutting the slab W can be improved. Further, since the chips generated when the gas is cut concentrate and fall on the cutting station 55, the chips can be easily and efficiently collected.

[Second cutting operation]
In the second cutting operation, for example, as shown in FIG. 2 (B), three slabs W each having one cutting site are conveyed to the gas cutting device 1, and the length of each slab W is set. An example is shown in which the position of the cutting part is applied when each slab W can be placed in the cutting station 55.
In this case, for example, the mobile carriages 20, 30, 40 are made to stand by at each cutting station 55.
Next, when the cutting part of each slab W reaches the cutting station 55, the corresponding conveying roller 10 is stopped, and the gas blowing tube units 22, 32, 42 are moved along the cutting part, and each slab is moved. Cut W.
According to the second cutting operation, the cutting portions of the three slabs W are cut at the same time, so that productivity related to cutting can be improved. Moreover, it can collect | recover easily and efficiently.

[Third cutting operation]
In the third cutting operation, for example, as shown in FIG. 2C, when one slab W in which three cutting parts that can correspond to the cutting station 55 are transported to the gas cutting device 1 is transported. The example applied to is shown.
In this case, the mobile carriages 20, 30, 40 are put on standby at the respective cutting stations 55.
Next, when the cutting part of the slab W reaches the cutting station 55, the conveying roller 10 is stopped, and the gas blowing tube units 22, 32, 42 are moved along the cutting part to cut the slab W. .
According to the third cutting operation, the three cutting sites can be cut simultaneously, so that the productivity of slab cutting can be improved. Moreover, it can collect | recover easily and efficiently.

[Fourth cutting operation]
For example, as shown in FIG. 2D, the fourth cutting operation is performed when a single slab W in which three cutting parts not corresponding to the cutting station 55 are set is transported to the gas cutting device 1. An example of application is shown.
In this case, the gas blow tube units 22, 32, 42 wait the moving carriages 20, 30, 40 at positions corresponding to the cut portions of the slab W.
Next, when each cutting part of the slab W reaches a position corresponding to the gas blowing unit 22, 32, 42, the conveying roller 10 is stopped, the lifter 50 is operated to lift the slab W, and the casting The piece W is separated from the conveying roller 10.
Next, the gas blow tube units 22, 32, 42 are moved along the respective cutting sites, and the slab W is cut.
When the cutting part is cut, the lifter 50 is lowered, the slab W is placed on the transport roller 10 and transported to the next process.
According to the fourth cutting operation, a plurality of cutting sites can be simultaneously cut regardless of the relative positions of the cutting site and the conveyance roller 10, so that the time required for cutting the slab can be shortened and productivity can be improved. .

  According to the gas cutting device 1, since the plurality of movable carriages 20, 30, and 40 are provided, a plurality of cutting parts can be simultaneously cut. As a result, the time required for cutting the slab W is shortened, and the slab W can be efficiently gas-cut.

Moreover, according to the gas cutting device 1, since the slab W can be separated from the conveyance roller by the lifter 50, the slab W can be cut regardless of the relative position between the cutting portion and the conveyance roller 10, and When there is only one cutting part, the slab W can be cut on the transport roller 10 without using the lifter 50 by making the cutting part correspond to the cutting station 55.
Accordingly, the cast slab W can be efficiently cut regardless of the number and position of the cut portions of the slab W as long as the movable carriages 20, 30, and 40 are compatible.
As described above, according to the gas cutting device 1, the productivity can be improved with respect to the cutting of the slab W.

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention.
For example, in the above embodiment, the case where the gas cutting device 1 includes the three cutting stations 55 and the lifter 50 has been described. However, for example, the number of cutting stations 55 can be arbitrarily set. For example, only the lifter 50 may be provided and the cutting station 55 may not be provided.

  Moreover, in the said embodiment, although the case where the three mobile trolley | bogies 20, 30, and 40 were provided was demonstrated, the number of mobile trolley | bogies can be set arbitrarily.

  Further, the present invention is not limited to the operations shown in the first to fourth cutting operations, and possible cutting operations can be arbitrarily set. For example, all cutting parts can correspond to the cutting station 55. Needless to say, the lifter 50 may be used for gas cutting.

  Since the slab can be cut efficiently, it is industrially applicable.

W Cast slab 1 Gas cutting device 10 Transport roller 18 Traveling rail 20, 30, 40 Moving carriage 22, 32, 42 Gas blowing unit (gas blowing tube)
22L, 22R, 32L, 32R, 42L, 42R Gas blow pipe 50 Lifter 55 Cutting station 60 Control unit

Claims (5)

A gas cutting device for cutting a cutting site set in a slab,
A plurality of transport rollers for placing and transporting the slab;
A movable carriage that is movable in the direction of conveyance of the slab,
A gas blower pipe that moves with the moving carriage and moves along the cutting site to cut the slab,
Slab stop means for stopping the slab at a predetermined position;
A lifter for lifting the slab from the conveying roller;
A control unit,
The control unit
A gas cutting device characterized in that, when cutting a slab, the slab is separated from the conveying roller by a lifter. The gas cutting device according to claim 1,
When there are a plurality of cutting parts that are equipped with a plurality of moving carriages and can be accommodated in the cast slab,
The control unit
A gas cutting apparatus comprising: a movable carriage disposed at a position corresponding to a cutting portion of a gas blowing tube; and a slab is separated from a conveying roller by a lifter and then the slab is cut. The gas cutting device according to claim 1 or 2, wherein
A gas cutting apparatus characterized in that a cutting station is formed in which the interval between adjacent conveying rollers is larger than the interval between other conveying rollers. The gas cutting device according to claim 3,
When there is one slab cut site,
The control unit
A gas cutting apparatus comprising: a movable carriage disposed at a position corresponding to a cutting station of a gas blowing tube; and a slab is stopped and cut at a position corresponding to the cutting station of a cutting portion. The gas cutting device according to claim 3,
When there are a plurality of cutting parts that are equipped with a plurality of moving carriages and can be accommodated in the cast slab,
The control unit
If all the cutting parts set on the slab on the transport roller can be arranged corresponding to the cutting station, the movable carriage is arranged so that the gas blowing pipe corresponds to the cutting station and all the cutting parts are cut. A gas cutting apparatus configured to stop and cut a slab so as to correspond to a station.

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