JPH0852575A - Work transporting device for thermal cutter - Google Patents

Abstract

PURPOSE:To improve productivity by providing a worktable, by which a plate material cut in a prescribed shape and the remaining material are transported, and an intermediary transporting means which facilitates transfer from the worktable to a storing means, and thereby surely transporting the cut plate material and the remaining material to a storage device. CONSTITUTION:A roller conveyor 33 in which a material A to be cut is stored piece by piece is raised/lowered and stopped at the same height as the upper face of the projected chevron crosspiece 13 of a table 11. Then, the roller conveyor 33 is rotated by its motor 38, and simultaneously the projected chevron crosspiece 13 is rotated through the endless chain 21 of a conveyor part 20. Consequently, the material A on the roller conveyor 33 of a storage device 30 is smoothly transferred from the roller conveyor 33 to the top of comb teeth 42a and to the projected chevron crosspiece 13. At this time, The material A is pressurized by a roller and stably smoothly transferred from a thick plate to a thin sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work transfer device for a heat cutting machine, and more particularly to a work transfer device for transferring a work cut by a heat cutting machine such as a gas laser, plasma or carbon dioxide gas to a storage means. It is about.

[0002]

2. Description of the Related Art Conventionally, as a work transfer device for loading and unloading a work of a material to be cut into a thermal cutting machine such as a laser processing machine or a plasma processing machine, for example, Japanese Patent Laid-Open No. 4-169419 shown in FIG. It has been known. In FIG. 9, the laser processing system 101 has a laser processing machine 143 as a thermal cutting processing machine, and as a storage device for the material to be cut, a material to be cut is provided on the left side of the laser processing machine 143 in the drawing. The stocker 153 and the load station 159 are used as a storage device before processing of the
An unload station 126 and a working station 14 are provided as storage devices after processing on the right side of the figure of 43.
2 are provided. Then, the work transfer device 102
But these load station 159, laser processing machine 1
43 and the unload station 126 are provided so as to communicate with each other. The work transfer device 102 is the traveling rail 10.
3 and the traveling rail 103 has a stocker 53
Of the laser beam machine 143, the table 145 of the laser beam machine 143, and the unload station 126. The traveling rail 103 is provided with a movable traveling device 105, and the traveling device 105 is provided with a loader 107 and an unloader 117 for moving a material to be cut so as to be vertically movable. A work suction device 110 including a vacuum pad 112 and the like is attached to the loader 107, and the work is sucked to suck the work from the load station 159 to the laser processing machine 143.
Are being carried in. The unloader 117 includes a fork 12 including a U-shaped work holding member 122 and the like.
0 is arranged to be movable up and down and horizontally. The unloader 117 carries out the processed work 161 of the material to be cut after processing from the table 145 of the laser processing machine 143 to the unload station 126 by the work supporting member 122 of the fork 120.

[0003]

However, in the conventional Japanese Patent Laid-Open No. 4-169419, the laser processing machine 14 is used.
Since the load station 159 and the unload station 126 are arranged on both sides of the No. 3 and the traveling rail 103 is passed above this and the work transfer device 102 is installed, a lot of space is required to install the device. In addition, there is a problem in that the entire device becomes large in size and the manufacturing cost increases. Further, when the double feeding of the work occurs, the entire apparatus stops, which causes a decrease in productivity. Further, when cutting the work 161, a shape in which the cut portion is partially left (micro joint)
However, for some reason, cutting may occur at a portion that was left partially, and a part of the processed work 161 may hang down at the interval of the blade. At this time, the work detection sensor attached to the tip of the fork detects the work 161 hanging at the interval of the sword and detects the fork 120.
Is stopped to prevent damage to the processed work 161. Therefore, it is necessary to attach a work detection sensor, a control device that outputs a stop command, and a stop device to the work transfer device, and the device becomes complicated and expensive, and since the laser processing system stops, the same as above. This leads to a decrease in productivity. Further, it is necessary to carry out a process of cutting and processing the partially left portion (micro joint) again to make it into a predetermined shape, which leads to a decrease in productivity and a troublesome work.

The present invention focuses on the above problems and relates to a work transfer device for a thermal cutting machine, and in particular, a plate material having a predetermined shape and a residual material cut by a thermal cutting machine such as gas laser, plasma or carbon dioxide gas. It is an object of the present invention to provide a work transfer device for a thermal cutting machine that reliably transfers and to a storage device to improve productivity.

[0005]

In the invention of the work transfer device of the thermal cutting machine according to the present invention, the material to be cut placed on the work table is cut into a plate material having a predetermined shape, and the cut predetermined processing is performed. In a work transfer device of a thermal cutting machine that transfers a plate-shaped material and a residual material to a storage unit, a work table that transfers the cut plate-shaped material and a residual material,
The intermediate transfer means facilitates transfer from the work table to the storage means.

The intermediate conveying means is composed of lower guide means for supporting the cut plate material having a predetermined shape and the remaining material at the lower part, and the lower guide means is composed of a plate having comb teeth. Further, the comb-shaped teeth of the lower guide means and the mountain-shaped cross-shaped projections of the work table intersect. Further, the tips of the comb-shaped teeth cross the rotation center of the conveyor of the work table.

Further, the intermediate conveying means comprises upper guide means for pressing the cut plate material having a predetermined shape and the residual material at the upper part, and the upper guide means is a roller longer than the work table width.

[0008]

According to the above construction, in the storage device arranged near the thermal cutting machine, the material to be cut before cutting, or the processed material and the residual material having a predetermined shape after cutting are processed by the thermal cutting machine. An intermediate transfer device is installed to ensure reliable transfer between the storage device and the storage device, and loading and unloading is performed between the storage device and the thermal cutting machine, reducing the space for installing the thermal cutting system. , The device is simple and the manufacturing cost is low. Since the workpieces are transferred one by one from the storage device via the intermediate transfer device, there is no double feed and there is no stoppage of the entire device, improving productivity. Further, since it is conveyed through the intermediate conveying device, it is possible to perform cutting processing in a final cutting shape by a cutting machine, and there is no step of cutting a cut workpiece of a processed material from a material to be cut,
The hard work is gone. In addition, even if the shape of the processed material of a predetermined shape is separated into small pieces, it is supported by the intermediate transfer device and moves between the storage device and the thermal cutting processing machine, so it is possible to transfer from a thick plate to a thin plate stably and smoothly. it can.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a work transfer device of a thermal cutting machine according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of a work transfer device of a thermal cutting machine for explaining the present invention, and FIG. 2 is a side view. 1 and 2
In the work transfer device of the heat cutting machine, the heat cutting machine is the laser processing machine 1, and the work transfer apparatus 2 is a part of the laser processing machine 1 on which the material A to be cut such as a flat plate is placed. In addition, the work table portion 10 that conveys the plate material Ma (shown in FIG. 5) having a predetermined shape cut from the work material A and the remaining material Ms, and the work table portion 10 installed near the work table portion 10 are provided. The storage device 30 that stores the cut plate-shaped plate material and the residual material is disposed between the work table unit 10 and the storage device 30, and the plate material and the residual material are transferred from the work table unit 10 to the storage device 30. The intermediate transfer device 40 facilitates transfer to and from.

In the laser beam machine 1, a frame 1c is horizontally mounted on a bed 1a via a column 1b, and this frame 1c has a Y direction along the longitudinal direction of the frame 1c.
A processing nozzle unit 2 is provided that is movable in each direction of the axis and the vertical Z axis in the drawing. The processing nozzle unit 2 is provided with a nozzle 2a projecting downward and irradiating a laser beam. As shown in FIG. 3, a work table section 10 is disposed below the nozzle 2a and above the bed 1a, and the work table section 10 includes a table section 11 and a conveyor section 20.
The table portion 10 slides movably along the X axis in the longitudinal direction of the bed 1a. The table unit 10 is fixed to the conveyor unit 20 and slidably moves along the X axis by the rotation of the conveyor unit 20.

As shown in FIG. 4, the table portion 11 is formed by a plurality of crosspieces 11a, 11b, ... Which are long in the Y-axis direction, and the long crosspieces 11a, 11b ,. Endless chain 21 of bracket 12
Is fixed through. Each long bar 11a, 11
b, ... Are provided with mountain-shaped cross-section projections 13 at predetermined intervals in the Y-axis direction.
To place. Also, the long crosspieces 11a, 11b, ...
It is fixed to adjacent chains at a specified interval in the X-axis direction,
As described above, the lattice-shaped work placement portion is formed along with the Y-axis direction.

As shown in FIG. 3, the conveyor section 20 has an endless chain 21 which is rotated by a conveyor motor (not shown) inside both side plates 1d arranged on both sides above the bed 1a. A long crosspiece 11 is attached to the upper chain 21a of these chains 21 via a bracket 12.
a, 11b, ... Are fixed. Upper chain 2
1a is supported from below by a large number of support rods 23 that are vertically movably supported by a support member 22 that projects from the side plate 1d. As shown in FIG. 3, the supporting rod 23 is provided with a compression spring 24 so that the long bars 11a, 11b ,.
.. are urged upward so that the convex portions 13 of the mountain-shaped cross-section have the same height.

As shown in FIGS. 1 and 2, the storage device 30 is installed in the vicinity of the work table portion 10 of the laser processing machine 1, and the storage device 30 includes a pedestal 32 in which columns 31 are erected at four corners. , A plurality of stages of roller conveyors 33 housed between the columns 31 and a lifter 34 that moves the roller conveyors 33 up and down. The roller conveyor 33 has a large number of friction rollers 3 between machine frames 35 provided on both sides.
6 are laid horizontally at equal intervals, and each friction roller 3
One end of 6 is connected to each roller conveyor 3 via a chain 37.
It is connected to the conveyor motor 38 provided for every three. Each of the above-mentioned roller conveyors 33 contains in advance one piece of the cut material A to be carried into the work table section 10 of the laser processing machine 1.

As shown in FIGS. 5 and 6, the intermediate transfer device 40 includes a lower guide 41 fixed to a mount 32 of the storage device 30 and an upper guide portion 43 fixed to the mount 32 of the storage device 30. Consists of. The lower guide 41 is formed by a thin plate 42 having a predetermined width that is long in the Y-axis direction, one end of the long thin plate is fixed to the pedestal 32 substantially horizontally, and the other end thereof has a pointed comb tooth 42a. Has become 42b shows a reinforcing rib. Further, the upper surface of the comb tooth 42a is substantially flush with the tips of the mountain-shaped projections 13 provided on the long crosspieces 11a, 11b, ...
The upper surfaces of the comb teeth 42a are fixed so as to be flush with the upper surface of a predetermined roller conveyor 33 which sequentially carries in and out the material A to be cut from the storage device 30 to and from the work table section 10. Further, the comb teeth 42a having a pointed shape are provided so as to be engaged with and interdigitate between the convex portions 13 of the mountain shape. This shows a state in which the comb teeth 42a and the chevron-shaped projection 13 of the mountain shape are meshed with each other in FIG. 6 (W view of FIG. 5). The tips of the comb teeth 42a cross the rotation center Oa of the conveyor of the work table. That is, the comb teeth 42
a predetermined distance La between the tip of a and the rotation center line of the conveyor
have.

The upper guide portion 43 comprises a lever 46 supported by a pin 45 fixed to a bracket 44 fixed to the pedestal 32 and swingably rotatable, and a roller 47 supported by the lever 46 and rotatable. The roller 47 exerts a pressing force downward on the material to be cut by its own weight, but the torque spring,
Alternatively, a pressing force may be applied by a spring or hydraulic / pneumatic pressure via a link. As shown in FIG. 7, the roller 47 is a roller Lr longer than the width Lt of the long crosspiece 11a of the table portion 11. In addition, the rotatable roller 47
Is made of an elastic material such as rubber or a polymeric material such as plastic. Further, the shape of the roller 47 may be constituted by one as shown in FIG. 7, and as shown in FIG.
The groove 47a may be provided on the way or may be continued on the way.
A thickness sensor that measures the plate thickness of the material to be cut between the lower guide 41 and the upper guide portion 43 when the material to be cut is carried in and carried out from a storage device that stores ordinary plate materials in a stack. May be provided to detect a double feed (double blank), output an alarm, and stop the apparatus.

Next, the operation of the above structure will be described. The lifter is moved up and down in response to a command from a control device (not shown) of the roller conveyors 33 in which the cut materials A are stored one by one in advance, and the commanded roller conveyors 33 are moved to the chevron-shaped projections 13 of the table-shaped portion 11. Stop at the same height as the top surface of. Next, the conveyor motor 38 of the roller conveyor 33 which is instructed rotates the roller conveyor 33, and the conveyor motor (not shown) of the conveyor section 20 is rotated by an instruction from a controller (not shown), and the chain is passed through the endless chain 21. The crosspiece convex portion 13 having a mold shape is rotated. As a result, the material A to be cut on the roller conveyor 33 of the storage device 30 moves from the roller conveyor 33 to the comb teeth 42a.
It is possible to smoothly transfer to the upper surface of each of the comb teeth 42a and the mountain-shaped cross-section of the cross-section 13 of the crosspiece. At this time, since the material A to be cut is pressed by the roller 47, it is possible to stably and smoothly transfer from the thick plate to the thin plate.

When the material A to be cut is placed on the bar-shaped convex portion 13 of the mountain shape, the material A to be cut is brought into contact with the stopper S in the X-axis direction and the Y-axis direction to be positioned and fixed at a predetermined position. To be done.
When the positioning is completed, according to a command from a control device (not shown), the material A to be cut slides movably along the X axis by the rotation of the conveyor section 20, and the processing nozzle unit 2
Slide movably in the Y-axis direction along the longitudinal direction of the frame 1c, and the material A to be cut is completely cut into a predetermined shape without leaving a partial connection point (micro joint).

When the cutting is completed, a conveyor motor (not shown) of the conveyor section 20 is rotated by a command from a controller (not shown) to rotate the mountain-shaped crosspiece projection 13 through the endless chain 21, and the command is issued. The conveyor motor 38 of the roller conveyor 33 is
To rotate. As a result, the material A to be cut placed on the crosspiece convex portion 13 smoothly transfers from the support of the crosspiece convex portion 13 to the upper surface of the comb tooth 42a, and from the upper surface of the comb tooth 42a to the predetermined position of the storage device 30. It is possible to smoothly transfer to the roller conveyor 33.

At this time, the plate material Ma cut completely from the material A to be cut into a predetermined shape also moves from the support of the projection 13 to the upper surface of the comb teeth 42a when the projection 13 and the comb teeth 42 are moved.
Since it crosses and supports a, it does not hang down even if the cutting shape is small, and since the material A to be cut is pressed by the roller 47 and maintains a horizontal state, it is stable and smooth from a thick plate to a thin plate. You can transfer to.

In the above embodiment, the material A to be cut is
Explained the case where it was completely cut into a predetermined shape without leaving partial connection points (micro joints), but this device can be used for those with partial connection points (micro joints). It goes without saying that you can do it.
Further, the storage device has been described as a case where the material A to be cut is loaded and unloaded from the roller conveyor that has been housed one by one in advance. Alternatively, it goes without saying that it can be used for either loading or unloading.

[0021]

As described above, according to the present invention,
Since an intermediate transfer device is installed to reliably transfer the work between the thermal cutting machine and the storage device, the space for installing the work transfer device of the thermal cutting machine is reduced and the device is simple and the manufacturing cost is low. Become. When moving from the thermal cutting machine to the storage device by the work transfer device, it is transferred via the intermediate transfer device, so it is possible to perform the cutting work in the final cutting shape, and the process of cutting the cut work from the material to be cut. This eliminates the need for troublesome work and improves productivity. Further, even if the cut shape is small, even if the plate thickness is changed, it can be reliably transported, and the excellent effect of improving productivity can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view of a work transfer device of a thermal cutting machine for explaining the present invention.

FIG. 2 is a side view of the work transfer device of the thermal cutting machine for explaining the present invention.

FIG. 3 is a partial cross-sectional view of a work table section for explaining the present invention.

FIG. 4 is a partial cross-sectional view of a work table for explaining the present invention.

FIG. 5 is a side sectional view of the intermediate transfer device of the present invention.

6 is a view as seen from W in FIG. 5, showing a state in which the comb teeth and the chevron-shaped projections of the cross-shaped portions mesh with each other.

FIG. 7 is a sectional view of an upper guide portion of the present invention.

FIG. 8 is a side view of the roller of the present invention.

FIG. 9 is a plan view of a work transfer device of a conventional thermal cutting machine.

[Explanation of symbols]

1 ... Laser processing machine, 1a ... Bed, 2 ... Work transfer device, 10 ... Work table section, 11 ... Table section, 11a ... Cross section, 13 ... Cross section, 30 ... Storage apparatus , 33 ... roller conveyor, 40 ... intermediate transfer device,
41 ... Lower guide 41, 42a ... Comb teeth, 43 ... Upper guide part, 47 ... Roller, A ... Cut material, Ma ...
… Cut plate with predetermined shape, Ms …… Remaining material, Oa ……
Center of rotation of the conveyor.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B65G 47/52 A

Claims (7)

[Claims] 1. A work transfer of a thermal cutting machine for cutting a material placed on a work table into a plate having a predetermined shape and transferring the cut plate and the remaining material to a storage means. In the apparatus, a work table for transporting a cut plate material and a residual material, and an intermediate transport means for facilitating transfer from the work table to the storage means. Transport device. 2. The work transfer device for a thermal cutting machine according to claim 1, wherein the intermediate transfer means comprises lower guide means for supporting the cut plate material having a predetermined shape and the residual material at the lower part. 3. The work transfer device for a thermal cutting machine according to claim 2, wherein the lower guide means is a plate having comb-shaped teeth. 4. The work transfer device for a thermal cutting machine according to claim 3, wherein the comb-shaped teeth of the lower guide means and the mountain-shaped projecting protrusions of the work table intersect each other. 5. The work transfer device for a thermal cutting machine according to claim 3, wherein the tips of the comb-shaped teeth cross the center of rotation of the conveyor of the work table. 6. A work transfer device for a thermal cutting machine according to claim 1, wherein the intermediate transfer means comprises upper guide means for pressing the cut plate material having a predetermined shape and the residual material at the upper part. 7. The work transfer device for a thermal cutting machine according to claim 6, wherein the upper guide means is a roller longer than the width of the work table.