JPH0353793Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a gas cutting device in which a number of blowpipe tubes are arranged in parallel, and more particularly to a multi-blowpipe type cutting device equipped with a marking torch.

``Prior art'' A horizontally moving shaft on which a cutting blowpipe is mounted and a traveling rail constructed perpendicularly to the horizontally moving shaft via the cross frame are moved in the X and Y directions, respectively, based on commands from an NC control device. NC cutting machines that cut workpieces into arbitrary shapes while moving in the axial direction are well known, and this type of cutting machine has a lower level of automation than conventional portable automatic cutting machines and photoelectric copying cutting machines. Due to its high price, it has been widely used in recent years.

However, on the other hand, as a result of changing to the NC cutting method, work processes that were handled semi-consciously as incidental to the cutting process in the conventional cutting process have no choice but to be processed as an independent work. Ta. The main one is marking work.

In other words, cutting work is not the final process, but
It is merely an intermediate preparatory work for some purpose. Therefore, the cut parts are marked on the workpiece with various instructions for the work to be done in the next process, such as the part name and code, welding points, parts installation points, reference lines and line of sight for bending work. Needless to say, if you do this, the work in the next process will be easier.

For this reason, in conventional NC cutting machines, a marking torch is attached to the blowpipe attachment unit attached to the lateral movement shaft, and after making the desired marking,
Next, attach a cutting blowpipe instead of the marking torch to the mounting unit and perform the predetermined NC cutting, or arrange the marking torch and cutting blowpipe in parallel on the same beam via the mounting unit, marking and cutting. The structure is such that each of these steps is performed individually.

On the other hand, in order to improve the productivity of recent NC cutting machines, a large number of blowpipe are arranged in parallel at appropriate intervals on the horizontal movement axis arranged perpendicular to the running rail, and the blowpipe is horizontally arranged. A multi-blow pipe type NC cutting device has been proposed that performs NC cutting while integrally moving in a predetermined direction (X-axis direction) via a moving axis.

``Problem that the invention aims to solve'' When marking is performed using such a cutting device, since many sets of blowpipe attachment units are attached to a single lateral movement axis, it is necessary to move these units closer to one side. After that, it is common to attach a marking torch to the blowpipe attachment unit located on the end side of the blowpipe and make the desired markings. However, the movement range of the marking torch was restricted, making it impossible to mark the entire area of the workpiece.

In particular, this problem becomes more serious as the number of installed blowpipe increases, and for this reason, in the multi-blowpipe type NC cutting device, the workpieces cut by the device are individually marked. In such a production procedure, the number of man-hours in the next process becomes extremely large, and the merits of the multiple blowpipe cutting device are greatly diminished.

In view of the drawbacks of the prior art, the present invention provides a multiple blowpipe cutting device that is capable of marking the entire area of the workpiece before cutting without being restricted by the blowpipe attached to the lateral movement shaft. The purpose is to do.

"Means for Solving the Problems" In order to achieve the above-mentioned technical problem, the present invention
As shown in the figure, a linear guide portion 4 is provided, which is arranged parallel to the lateral movement axis 2 on which a large number of blowpipe 1a are arranged in parallel, and is movable along the traveling rail 3. The shaft 2 is generally supported by a cross frame 5 installed perpendicular to the running rail 3 so as to be movable in the axial direction.
In this case, the linear guide portion 4 may be configured as a guide rail supported by the cross frame 5, and the linear guide portion 4 may be formed by using the side wall surface of the cross frame 5 on the opposite side to which the lateral movement shaft 2 is attached. may be formed.

A marking torch 6 movable along the guide part 4 in parallel with the cross frame 5 is disposed on the guide part 4. In this case, the marking torch 6 is not necessarily limited to one, but may be plural as necessary. You may place them separately.

The marking torch 6 is configured to be movable separately from the lateral movement axis 2, particularly based on a signal separate from the control signal for the movement axis 2, and the respective coordinate movement amounts of the marking torch 6 and the blowpipe 1 are set. The point is that a means for setting the amount of coordinate movement is provided.

The coordinate movement amount setting means includes a control circuit 20 that oscillates an instruction signal for marking or cutting in the embodiment described later, and transmits each coordinate signal of (X1, Y) and (X2, Y) based on the instruction signal. It is composed of a function generator 21 that performs the following functions.

A switching means 22 is provided for selectively transmitting the movement signal of the movement amount setting means to the respective drive circuits 24 and 25 of the marking torch 6 and blowpipe 1, and the marking operation and shape cutting can be performed by appropriately switching the switching means. Specifically, for example, the switching means is switched to the marking drive circuit 25 side, marking is performed based on the movement signal of the movement amount setting means, and then the switching means 22 is switched to the marking drive circuit 25 side, and then the switching means 22 is switched to the marking drive circuit 25 side, and marking is performed based on the movement signal of the movement amount setting means. The point is that it is configured to switch to the drive circuit 24 side and perform coordinate cutting based on the movement signal of the movement amount setting means.

We propose a multi-blowpipe 1a... type cutting device that has the following as an essential component.

The present invention is based on a multi-blowpipe 1 equipped with an NC control device.
Although it is suitably applied to a... type cutting devices, it is not limited thereto.

Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail by way of example with reference to the drawings. However, the dimensions, materials, shapes, relative positions, etc. of the components described in this example are as follows, unless otherwise specified.
This is not intended to limit the scope of this invention, but is merely an illustrative example.

FIG. 1 is a schematic plan view of a multi-blowpipe cutting device according to an embodiment of the present invention. In the figure, 3 indicates a pair of parallel pipes arranged on both left and right sides of a surface plate 8 on which a workpiece 7 is placed. A substantially H-shaped cross frame 5 is installed perpendicularly to the traveling rail 3. A Y-axis drive motor 9 is attached to the cross frame 5,
It is configured to be able to travel on the travel rail 3 based on commands from an NC control mechanism to be described later.

Further, a lateral movement shaft 2 is attached to the front wall surface of the cross frame 5 in parallel with the frame 5, and the lateral movement axis 2 is connected to the X1 mounted on the end side of the frame 5.
It is configured to be movable in parallel to the frame 5 by a shaft drive motor 13. and the horizontal movement axis 2
A large number of blowpipe 1a...
are provided in parallel.

On the other hand, a linear guide rail 3 is attached to the rear wall surface of the cross frame 5 in parallel with the cross frame 5. A marking torch 6 is attached to the guide rail 3 via an attachment unit, and the marking torch 6 is connected to an X2 axis drive motor 11 attached to an attachment unit 12.
It is configured to be movable along the guide rail 3.

The X1-axis drive motor 13 and the X2-axis drive motor 11 are configured to be selectively drivable based on commands from the NC control mechanism.

FIG. 2 is a block diagram showing such an NC control mechanism, where 20 is a control circuit that oscillates an instruction signal for marking or cutting, and 21 is a control circuit that generates (X1, Y), (X2, Y) based on the instruction signal. A function generator 23 that transmits each coordinate signal switches the changeover switch 22 based on the instruction signal, and the function generator 21
This is an axis switching device that selectively connects the X1-axis drive circuit 24 or the X2-axis drive circuit 25. In addition, 26
is the Y-axis drive circuit.

Next, the operation of this embodiment will be explained.

First, the control circuit 20 transmits a marking instruction signal, connects the function generator 21 and the X2 drive circuit 25, and then sends the function generator 21 to each drive circuit 2.
Coordinate signals for Y-axis and X2-axis control are transmitted to the 5 and 26 sides, respectively.

Based on the coordinate signal, the drive circuit 25,
The marking torch 6 is moved along the guide rail 3 in the X-axis direction while the cross frame 5 travels along the travel rail 3 in the Y-axis direction by driving the Y-axis and X2-axis drive motors 9 and 11 from 26. As a result, marking can be performed over the entire area of the workpiece 7.

On the other hand, after completing the marking, attach the mounting unit 1.
After setting the intervals between a large number of blowpipes 1a attached to the lateral movement shaft 2 via the control circuit 2
A disconnection instruction signal is transmitted from 0, and the function generator 21 and
After connecting the X1 drive circuit 13, function generator 2
From 1 to each drive circuit 24, 26 side, the Y axis and
Send the coordinate signal for X1-axis control.

Based on the coordinate signal, the drive circuit 24,
Drive the Y-axis and X1-axis drive motors 9 from 26,
While moving the cross frame 5 in the Y-axis direction along the traveling rail 3, the lateral movement axis 2 is moved in the X-axis direction, and as a result, the workpiece 7 after marking is completed.
can be cut into a predetermined shape.

"Effect of the invention" As described above, according to the invention, without being restricted by the large number of blowpipes 1a attached to the lateral movement shaft 2,
Marking can be performed over the entire area of the workpiece 7 before cutting, and as a result, the advantages of the multiple blowpipe type cutting device can be effectively utilized without putting a burden on the next process. It has various effects such as

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view of a multiple blowpipe type cutting device according to an embodiment of the present invention, and Fig. 2 shows the control of the device.
FIG. 3 is a block diagram of the NC control mechanism. 1a...: Many blowpipe, 2: Lateral movement axis, 3: Running rail, 4: Straight guide part, 5: Cross frame, 6: Marking torch.

Claims (1)

[Claim for Utility Model Registration] A linear guide section and a lateral movement axis are arranged on a running rail running in the Y-axis direction, each perpendicular to the running rail, and these move integrally along the running rail. In the multiple blowpipe type cutting device, a marking torch is attached to the linear guide portion, and a plurality of blowpipe are attached to the lateral movement axis so as to be movable in the X-axis direction. A coordinate movement amount setting means for setting the coordinate movement amount, and a switching means for selectively transmitting a movement signal of the movement amount setting means to respective drive circuits of the marking torch and the blowpipe are provided, and the switching means is appropriately switched. A multi-blowpipe cutting device characterized by being configured to sequentially perform marking operations and shape cutting.