JPH07155991A - Cutting cradle - Google Patents

Abstract

(57) [Abstract] [Purpose] A cutting pedestal that can suck dust and smoke generated when performing cutting methods such as gas cutting, plasma cutting, and laser cutting, reduce noise, and eliminate dropped slag. To realize. [Structure] A cutting surface plate A is constructed by arranging a standing member 2 for mounting a material to be cut on a frame 1 in a direction orthogonal to a rail laying direction. The hood B is constituted by the peripheral wall 11, a plurality of suction holes 17 are formed in the intersecting wall 11a, and the hood duct is formed.
18 is provided and the duct 18 is connected to the suction duct 20. Surrounding wall
Install a sound insulation plate on 11 and attach a sound absorber. A scraper 25 is formed below the intersecting wall 11a of the peripheral wall 11, and the tip of this scraper 25 is arranged close to the floor 26 of the space formed below the standing member 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting cradle used in a cutting device for performing gas cutting, plasma cutting or laser cutting.

[0002]

2. Description of the Related Art A torch such as a gas cutting torch, a plasma cutting torch, or a laser cutting torch is selectively used to cut a workpiece made of a ferrous metal such as a steel plate or a stainless steel plate or a non-ferrous metal such as an aluminum plate or a copper plate. A processing method for cutting an intended product is widely practiced. These processing methods are to melt and oxidize the material to be cut by injecting (including irradiation) preheating flame and cutting oxygen, plasma arc, laser beam, assist gas, etc. from a crater or nozzle member attached to the tip of the torch. At the same time, the melt and the oxide are removed from the material to be cut and cut.

As an example of the above processing method, a method of cutting a steel sheet with a transfer type plasma cutting torch will be described. In the plasma processing method, a gas for plasma is supplied around the electrode attached to the torch, and a gas that is turned into plasma by energizing between the electrode and the nozzle member is jetted from the nozzle, and when the plasma gas reaches the steel plate, the electrode And a steel plate are energized to form a plasma arc having an extremely high temperature and flow velocity.

In the steel sheet to which the plasma arc is jetted, the jetted portion locally melts and oxidizes, and at the same time, the jetting energy of the plasma arc removes the melt and the oxidation product (Noro) from the base metal. A kerf is formed. Then, by moving the torch in a desired direction while maintaining the plasma arc jetting onto the steel plate, the steel plate is cut into a shape corresponding to the moving path of the torch.

In the above plasma processing method and other processing methods, a plasma arc ejected from a nozzle member or a crater,
There is a problem that dust and smoke are generated when the cutting oxygen flow and the gas flow such as the assist gas locally oxidize and melt the work material. In addition, there is a problem that a large noise is generated when the slag is removed from the work material, and the removed slag accumulates on the floor, for example, below the work material.

Various dust collecting and smoke exhausting devices have been proposed for the purpose of eliminating dust and smoke generated by processing. For example, in Japanese Examined Patent Publication No. 52-32853, a partition plate is installed in parallel on a surface plate, and a steel plate to be cut is placed on the partition plate so that both ends of the surface plate, the partition plate, and the steel plate to be cut are separated. Disclosed is a dust collecting device configured to form an open branch duct and to blow air from one side of the duct so that dust can be collected by a main duct provided on the other side. With this technology,
Dust and smoke generated by processing can be removed by suction.

[0007]

In the above dust collecting apparatus, since the branch duct is composed of the surface plate, the partition plate, and the steel plate to be cut, when the size of the steel plate to be cut becomes smaller than that of the partition plate, the upper surface is cut. It becomes an incomplete duct shape that is open. Therefore, even if air is blown from one side of the branch duct and sucked from the other side, a large amount of clean air may be sucked in at the same time, or dust or smoke may diffuse into the air, which may reduce the dust collection efficiency. There is.

The surface plate which constitutes the branch duct is composed of a flat surface having no ventilation hole. Therefore, there is a problem that slag accumulates on the surface plate, and a great amount of time and labor is required to remove the slag.

Further, in the above dust collecting apparatus, since no measures are taken against noise, there is a problem in that the operator and the worker are distressed by the sound.

An object of the present invention is to efficiently and stably collect dust and smoke regardless of the size of the material to be cut, to reduce noise, and to accumulate below the material to be cut. It is to provide a cutting pedestal capable of processing the slag.

[0011]

In order to solve the above-mentioned problems, a typical cutting cradle according to the present invention drives a cutting torch mounted on a frame capable of traveling on a rail to cut a material to be cut. A cutting cradle used in a cutting device, a cutting surface plate having a plurality of upright members arranged in a direction orthogonal to the laying direction of the rail, and a rail in a space formed below the upright member. A hood having a peripheral wall that is arranged so that it can travel in a direction parallel to the laying direction and that partitions the space, a traveling device that causes the hood to travel in conjunction with traveling of a frame, and a predetermined peripheral wall that constitutes the hood. And a suction duct that is arranged in parallel with the rail and is connected to the hood duct. .

In the cutting cradle, it is preferable to attach a sound insulating plate to the peripheral wall forming the hood, and it is preferable to attach a sound absorbing body to the peripheral wall and the sound insulating plate.

Further, in each of the cutting pedestals, a bucket having an opening / closing door is attached to the lower end side of the peripheral wall forming the hood, or the peripheral wall forming the hood in a direction orthogonal to the rail laying direction. It is preferable to attach a scraper to the lower end of the peripheral wall, the tip of which is brought close to the surface defining the bottom of the space formed below the standing member that constitutes the surface plate.

[0014]

In the cutting cradle according to the above means, regardless of the size of the material to be cut, it is possible to efficiently collect and exhaust dust and smoke generated by performing the cutting process on the material to be cut.

That is, since the cutting platen is constituted by a plurality of upright members arranged in a direction orthogonal to the laying direction of the rail, when the material to be cut is placed on the cutting platen, A space is formed below the cutting material and the standing member. Further, by disposing a hood which is driven by the traveling device and travels in a direction parallel to the laying direction of the rails in the space, a space surrounded by the peripheral wall of the hood can be partitioned from the space.

By connecting the hood duct formed along the peripheral wall and the space inside the peripheral wall through the hole formed in the peripheral wall, and connecting the hood duct and the suction duct arranged in parallel to the rail, Atmosphere in the area defined by the peripheral wall can be sucked.

Therefore, by sucking the atmosphere in the hood through the suction duct and the hood duct while moving the hood in conjunction with the cutting device that travels on the rail, the material to be cut placed on the upright member is cut. Dust and smoke generated by cutting can be sucked from the peripheral wall.

When a sound insulating plate is attached to the hood of the receiving stand, noise generated by cutting the material to be cut can be reduced, and a sound absorber is attached to the peripheral wall of the hood and the sound insulating plate. In addition, the noise can be reduced by absorbing the noise at the same time as absorbing the noise.

Further, when a bucket having an opening / closing door is attached to the lower end of the peripheral wall constituting the hood of the cutting cradle, all the slag generated by the cutting of the material to be cut must be accommodated in the bucket. In addition, the stored slag can be discharged to the outside from the opening / closing door.

When a scraper is attached to the lower end of the peripheral wall in the direction orthogonal to the laying direction of the rails forming the hood of the cutting cradle, the tip of which is brought close to the bottom surface of the space formed below the standing member. In addition, it is possible to remove the slag accumulated on the bottom surface and to discharge the removed slag to the outside of the space as the cradle runs parallel to the rail laying direction.

[0021]

Embodiments of the cutting cradle to which the above means are applied will be described below with reference to the drawings. FIG. 1 is a diagram illustrating the overall configuration of the cutting cradle, (a) is a plan view, (b) is a front view, (c) is a side view, and FIG. 2 is a front view illustrating the configuration of the hood. FIG. 4 is a side view of a hood having a sound insulation plate and a sound absorber attached, FIG. 4 is a side view illustrating a connection state between the hood and a suction duct, and FIG. 5 is a side view illustrating a configuration of a scraper attached to the hood.

As shown in FIG. 1, the cutting table is composed of a cutting platen A and a hood B. This cutting cradle is provided with a hood B for removing dust or smoke generated when a material to be cut placed on the cutting surface plate A is cut by a torch such as a gas cutting torch, a plasma cutting torch, or a laser cutting torch.
It is configured so that it can be sucked in, noise can be reduced, and fallen slag can be scraped off.

The cutting surface plate A has a size based on the preset specifications of the cutting device. That is, the dimension (length) in the x direction in FIG. 4 (a) has a value that satisfies the maximum cutting length in the specifications set for the cutting device, and the dimension (width) in the y direction is the maximum. It has a value that satisfies the cutting width. The x direction is set in a direction parallel to the laying direction of a rail (not shown) for traveling the frame, and the y direction is set in a direction orthogonal to the laying direction of the rail.

The cutting platen A is composed of a frame 1 and a standing member 2. The frame 1 has a function of detachably attaching the upright member 2 and a function of supporting the weight of the material to be cut placed on the upright member 2, and is configured with a height considering the working posture of the operator. .

As the standing member 2, a long plate (for example, a standard flat bar) having sufficient strength to support the placed material to be cut is used. Since the standing member 2 is cut or adhered and damaged due to cutting of the material to be cut, it is attached to the frame 1 so as to be easily attached and detached without being fixed.

On the upper surface of the frame 1, a plurality of support members 3 for supporting the upright members 2 are formed at predetermined intervals. The support member 3 is constructed by fixing two angles 3a facing each other with an interval according to the thickness of the standing member 2 to the upper surface of the frame 1 by means such as welding. And by inserting the upright member 2 between the angles 3a,
The upright member 2 can be supported and detached.

A cover 1a is detachably attached to the upper surface of the frame 1. The cover 1a is attached so as to cover the upper surface of the standing member 2 excluding a preset cuttable region, and protects the cut material placed on the standing member 2 from dust and smoke generated by cutting. It has the function of reducing the diffusion into the atmosphere and effectively exerting the dust collection and sound insulation effects by the hood B.

Next, the structure of the hood B is shown in FIGS.
Will be described. In the cutting surface plate A configured as described above, a space reaching the floor is formed below the standing member 2, and the hood B is arranged so as to be movable in the space.

The hood B sucks dust and smoke generated by traveling in the same direction in conjunction with traveling of the frame equipped with the torch in the x direction, reduces noise, and reduces the noise on the bottom of the space. Is discharged to the outside of the cutting area.

The hood B is a peripheral wall that divides the space formed under the cutting surface plate A into a space capable of exhibiting a good suction effect.
Have 11. The peripheral wall 11 includes two intersecting walls 11a set according to the dimension in the y direction in the cuttable area set in the cutting device, and a delay according to the nature of the torch and the delay of the hood B with respect to traveling of the frame. End wall 11b which is set in consideration of the scattered state. Therefore, hood B
Has a quadrangular cylindrical shape whose upper and lower parts are open.

The hood B runs in the same direction in conjunction with the running of the frame in the x direction. Therefore, a pair of rails 12 are installed in the x direction along the frame 1 of the cutting surface plate A, and the sprockets 13a and 13b are provided at both ends of each rail 12.
Is provided. A chain 15 having an end connected to a connecting member 14 provided on an end wall 11b of the hood B is wound around these sprockets 13a and 13b. One sprocket 13a is driven by a traveling device 16 for traveling the hood B, and the other sprocket 13b is driven by the driving force transmitted through the chain 15.

The traveling device 16 is constructed so as to detect a traveling state (traveling in the x direction) on a rail of a frame having a torch and can rotate. That is, the rotation of the wheels provided on the frame is detected by a sensor such as a pulse encoder, and the hood B is rotated in accordance with the detected data to drive the hood B in the x direction in conjunction with the traveling of the frame.

A plurality of suction holes 17 are formed in the cross wall 11a of the hood B at a predetermined interval. Also cross wall 11a
A hood duct 18 is provided along. Therefore, the hood duct 18 communicates with the hood internal space 19 defined by the peripheral wall 11 via the suction hole 17.

The hood duct 18 may be formed on one side of the cross wall 11a. However, in this embodiment, the hood duct 18 is provided on each cross wall 11a. The suction holes 17 are formed alternately on the two intersecting walls 11a. As described above, by alternately forming the suction holes 17 in the two intersecting walls 11a, it is possible to efficiently suck the air in the hood space 19.

The hood duct 18 joins at one end of the hood B (on the left side in FIGS. 1 and 2 in this embodiment) and is installed at a position corresponding to the end along the x direction. It is connected to the suction duct 20. The suction duct 20 is connected to a suction device such as a blower (not shown), and sucks the atmosphere in the hood space 19 while cutting the material to be cut.

The suction duct 20 is formed in the shape of a rectangular tube, and the upper surface connected to the hood B is open and the open surface is covered by the belt 21. Also, as shown in FIG. 4, at the position facing the suction duct 20 of the hood B, three rollers are provided.
22 is rotatably provided, and by winding the belt 21 around the roller 22, the hood duct 18 and the suction duct
20 connected.

Therefore, the suction device is driven to drive the space inside the hood.
When the material to be cut is cut while sucking in the atmosphere of 19, the dust and smoke generated by the cutting will be removed from the space inside the hood.
The suction force acting on the suction hole 17, the hood duct 18,
It is sucked through the suction duct 20. At this time, suction hole 17
Is formed along the y direction of the peripheral wall 11 forming the hood B, the width dimension of the material to be cut is smaller than the width dimension of the cutting surface plate A, and therefore, the upper side of the hood B is not sealed. Even in such a case, it is possible to efficiently suck the generated dust or smoke.

A sound insulating plate 23 is provided on the cross wall 11a forming the peripheral wall 11 of the hood B on the hood internal space 19 side. The sound insulating plate 23 is provided below the suction hole 17, and has a function of reducing the noise generated by cutting and once expanding the noise, and exhibiting a sound absorbing effect. . A sound absorbing body 24 made of compressed glass wool or rock wool is attached to the back surface of the sound insulating plate 23 and the wall surface of the intersecting wall 11a.

In the above structure, the noise generated by the cutting of the material to be cut is shielded by the sound insulating plate 23 and simultaneously absorbed by the sound absorber 24. Therefore, it is possible to reduce the noise leaking to the outside of the hood B and improve the working environment.

As described above, since the hood B is formed in the shape of a rectangular cylinder, all the slag generated by the cutting of the material to be cut falls down. Therefore, in this embodiment, the bucket 5 is attached to the lower end side of the peripheral wall 11.

The bucket 5 is composed of a wall portion 5a having a size that can be attached to the peripheral wall 11, a bottom portion 5b attached to the lower end of the wall portion 5a, and an opening / closing door 6 provided on one side wall of the wall portion 5a. Has been done. During the cutting operation, the open / close door 6 is closed to store all the generated slag in the bucket 5, and when the predetermined amount of slag is accumulated in the bucket 5, or the open / close door 6 is opened at regular intervals. When the worker scrapes off the slag, it is possible to discard all the slag that has been generated.

As described above, the bucket 5 is attached to the lower end side of the hood B.
It becomes possible to form a closed space in which only the upper side is opened by attaching the above, and it is possible to more effectively exert the dust collecting and smoke exhausting functions of the hood B.

The hood B constructed as described above has a simple structure and does not increase the cost of the apparatus. However, it is indispensable for the worker to dispose of Noro, the operating rate of the cutting device is reduced, and the number of man-hours required to dispose of Noro is required. For this reason, it is preferable to provide a scraper 25 for discharging slag on the lower end side of the intersecting wall 11a of the hood B so as to scrape the slag generated as the cutting work progresses.

The tip of the scraper 25 attached to the lower end side of the intersecting wall 11a is arranged close to the floor 26 which is the bottom of the space formed below the standing member 2, and is attached to the floor 26 as the hood B runs. It is configured such that the accumulated slag can be scraped off and discharged to one side in the x direction.

That is, a bracket 25b having a scraper member 25a attached to the tip thereof is attached to the lower end of the intersecting wall 11a. The bracket 25b is attached to a bolt 27a fixed to the intersecting wall 11a by a nut 27b, and is attached to the bolt 27a by a spring 28 attached to the intersecting wall 11a.
It is biased toward the 11a side.

The floor 26 has a flat surface so as not to collide with the scraper member 25a. This floor 26 may be a concrete floor as a factory floor. However, it is preferable to construct the floor 26 by a steel plate laid on a concrete floor so that the high temperature slag will not be damaged by the slag when it falls.

The slag generated by the cutting of the material to be cut is removed from the material to be cut, drops in the hood internal space 19 of the hood B, is cooled and solidified during the fall, and is deposited on the floor 26. . When the hood B travels in the direction of arrow a in FIG. 5, the scraper member 25a scrapes off the slag accumulated on the floor 26 and transfers it in the same direction to eliminate it. Further, when the hood B travels in the direction of the arrow b, if the slag is accumulated on the floor 26, the scraper member 25a collides with the accumulated slag and rotates, whereby the scraper member 25a gets over the slag.

Therefore, by installing a conveyor for slag processing (not shown) at a predetermined position on the floor 26, it is possible to scrape the slag accumulated on the floor 26 in accordance with the movement of the hood B and to discard it by the conveyor. Become.

[0049]

As described in detail above, in the cutting cradle according to the present invention, dust or dust generated when the material to be cut placed on the standing member of the cutting surface plate is cut by the torch mounted on the frame Smoke can be sucked out of the hood and eliminated. Since the hood runs in conjunction with the traveling of the frame, the length of the hood parallel to the rail can be shortened to improve the suction efficiency. Further, since the suction holes are formed in the peripheral wall forming the hood, even if the width dimension of the material to be cut is smaller than the width dimension of the cutting surface plate, dust and smoke can be efficiently collected.

Further, when a sound insulation plate is attached to the hood and a sound absorber is attached to the sound insulation plate and the peripheral wall of the hood, noise generated by cutting can be reduced by sound insulation and absorption. Can be improved.

Further, when the bucket is provided below the peripheral wall of the hood, all the slag produced by the cutting can be accommodated in the bucket, and the accommodated slag can be scraped off and removed from the opening / closing door. Can be done.

Further, when the scraper is provided below the peripheral wall of the hood, the slag that is generated by the cutting as the hood runs and is accumulated on the bottom surface of the space formed below the standing member is scraped off. It has features such as being able to.

[Brief description of drawings]

1A and 1B are diagrams illustrating the overall configuration of a cutting cradle, FIG. 1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a side view.

FIG. 2 is a front view illustrating the configuration of a hood.

FIG. 3 is a side view of a hood to which a sound insulating plate and a sound absorber are attached.

FIG. 4 is a side view illustrating a connection state between a hood and a suction duct.

FIG. 5 is a side view illustrating the configuration of the scraper attached to the hood.

[Explanation of symbols]

A Cutting surface plate B Hood 1 Frame 1a Cover 2 Standing member 3 Supporting member 5 Bucket 6 Opening door 11 Surrounding wall 11a Crossing wall 11b End wall 12 Rails 13a, 13b Sprockets 14 Connecting member 15 Chain 16 Traveling device 17 Suction hole 18 Hood duct 19 Space in hood 20 Suction duct 21 Belt 22 Roller 23 Sound insulation plate 24 Sound absorber 25 Scraper 25a Scraper member 25b Bracket 26 Floor 27a Bolt 27b Nut 28 Spring

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B23K 26/10 26/14 37/08 Z

Claims (6)

[Claims] 1. A cutting pedestal used in a cutting device for cutting a material to be cut by driving a cutting torch mounted on a frame capable of traveling on a rail, in a direction orthogonal to a laying direction of the rail. A cutting surface plate having a plurality of standing members arranged, and a hood having a peripheral wall which is arranged so as to be able to run in a space formed below the standing member in a direction parallel to the laying direction of rails and which defines the space. A traveling device that causes the hood to travel in conjunction with traveling of a frame; and a hood duct that is formed along a predetermined peripheral wall that forms the hood and that communicates with a space in the peripheral wall through a hole provided in the peripheral wall, A cutting pedestal having a suction duct arranged in parallel with a rail and connected to the hood duct. 2. A hood duct is provided on each of the peripheral walls forming the hood and in a direction orthogonal to the rail laying direction, and the hood ducts are gathered at the end of the hood on the suction duct side. The cutting cradle according to claim 1, wherein: 3. The cutting cradle according to claim 1, wherein a sound insulating plate is attached to a peripheral wall forming the hood. 4. The cutting cradle according to claim 1, wherein a sound absorber is attached to a peripheral wall forming the hood, and a sound absorber is attached to the sound insulation plate. 5. The cutting cradle according to claim 1, wherein a bucket having a side wall provided with an opening / closing door is attached to a lower end of a peripheral wall forming the hood. 6. A surface that defines a bottom of a space that is formed below a standing member that constitutes a surface plate and that is a peripheral wall that constitutes the hood and that has a tip cut at a lower end of the peripheral wall in a direction orthogonal to the rail laying direction. The cutting cradle according to any one of claims 1 to 4, characterized in that a scraper is attached to the cutting cradle.