WO2022196507A1

WO2022196507A1 - Workpiece support body for thermal cutting machine

Info

Publication number: WO2022196507A1
Application number: PCT/JP2022/010440
Authority: WO
Inventors: 正人高津; 宏明石黒; 厚司舟木
Original assignee: 株式会社アマダ
Priority date: 2021-03-15
Filing date: 2022-03-10
Publication date: 2022-09-22
Also published as: JP2022141265A

Abstract

A workpiece support body (30) comprises: a base plate (31) that is disposed upright in the vertical direction on a support table in order to support a workpiece (W) to be subjected to thermal cutting; and a plurality of support pieces (35) which are made of a carbonaceous material, which are provided spaced apart from each other on the base plate (31), and each of which supports the workpiece (W). Each of the support pieces (35): is made of a plate body that is smaller than the base plate (31); and is provided so as to cross the base plate (31). An upper end (35a) of each of the support pieces (35) protrudes further upward than an upper end (31a) of the base plate (31) and thereby supports the workpiece (W).

Description

Work support for thermal cutting machine

The present invention relates to a work support for a thermal cutting machine. Among thermal cutting machines, it particularly relates to a work support for a laser cutting machine.

Patent Document 1 discloses a support member for a thermal cutting machine that supports a work to be processed by thermal energy. The support member includes a support table and a plurality of support pins each rising from the support table. Each support pin is made of a carbonaceous material so that melted material of the workpiece affected by thermal energy and the support pin are less likely to be welded together.

Patent Document 2 discloses a support member for a thermal cutting machine that supports a work to be processed by thermal energy. The support member includes a support table and a structure in which plate-like members each formed as a plurality of protruding projections erected from the support table are combined in a grid pattern.

Patent Document 3 discloses a support member for a thermal cutting machine that supports a work to be processed by thermal energy. This support member includes a support table and a plate-like member formed as a plurality of chevron projections each standing from the support table. The plate-shaped member is formed to be easily deformable and easily attachable and detachable.

Japanese Unexamined Patent Application Publication No. 2001-314998 Japanese Utility Model Laid-Open No. 60-171685 Japanese Patent No. 4188471

According to Patent Document 2, about 100 support pins per 1 m ² are required to prevent a product cut out by thermally cutting a work from dropping. Since products of 100 cm ² or less will surely fall, more number is required. For example, 10,000 support pins are required to ensure that a 4 cm ² product is not dropped.

In order to suppress the rise of the cut product after processing, it is preferable to arrange the support pins that support the work closer to each other. However, when the support pins are arranged close to each other, the space between the adjacent support pins becomes narrower, which hinders the flow of dust collection (assist gas flow) for fumes and dust generated by the thermal cutting process. There is the problem of being caught. Furthermore, increasing the number of support pins also poses a problem of increased cost.

Instead of the support pins that support the workpiece, if a plate-like (belt-like) member is provided with projections to form a grid shape, the escape of the assist gas becomes difficult during the thermal cutting process at the grid-like corners, resulting in poor processing. are more likely to occur.

The convex projections of the plate-shaped (belt-shaped) member that supports the work are changed to chevron projections, and these chevron projections are erected across the work support table. Assist gas escapes better, but if the plate-shaped (band-shaped) member is made of metal, if the thermal cutting position and the top of the chevron projection match, the melted material of the work will adhere to the metal work support member. be.

If the work supporting member is made of a carbonaceous material, the molten material of the work and the work supporting member are not strongly welded, but the carbonaceous material is sublimated by laser irradiation. If the work support member is a pin with a sharp tip, the protrusion will have a sharper shape.

Therefore, the problem to be solved by the present invention is to prevent the melted material of the work from welding to the work supporting member while suppressing the rise of the cut product when the thermal cutting machine cuts the work. To prevent a sharp shape even if the projection sublimates, to prevent deterioration of assist gas escape, and to prevent an increase in cost.

A work support of a thermal cutting machine according to one aspect of the present invention is installed on a support table to support a work to be thermally cut, and includes a vertically standing base plate and a base plate spaced apart from each other. and a plurality of support pieces each supporting a workpiece, each of the support pieces being composed of a plate body smaller than the base plate, provided so as to intersect the base plate, and supporting The upper end of the piece protrudes above the upper end of the base plate to support the work.

According to the work support of the thermal cutting machine according to one aspect of the present invention, the plurality of support pieces are provided so as to intersect the base plate. Adjacent support pieces face each other face-to-face, so even if the support pieces are arranged close to each other, a wide space can be secured between the support pieces.

According to one aspect of the present invention, while suppressing the rising of the cut product, the melted material of the work does not weld to the work supporting member, the protrusion does not become sharp even if sublimated, and the assist gas is released. There is an effect that the quality does not deteriorate and the cost does not increase.

FIG. 1 is a diagram showing a work support of a thermal cutting machine according to this embodiment. FIG. 2 is a diagram schematically showing the configuration of the laser processing machine according to this embodiment. FIG. 3 is an enlarged view of a main part of the work support according to this embodiment. 4 is a view showing the AA section of the work support shown in FIG. 3. FIG. 5 is a diagram showing the base plate shown in FIG. 3. FIG. 6 is a view showing the support piece shown in FIG. 4. FIG. FIG. 7 is a diagram schematically showing the flow of dust collection on the support table. FIG. 8 is a diagram schematically showing the flow of dust collection on the support table. FIG. 9 is an enlarged view of a main part of a work support according to a first modified example. FIG. 10 is an enlarged view showing a main part of a work support according to a second modification. FIG. 11 is an explanatory diagram showing the relationship between the work and the work support.

The work support of the thermal cutting machine according to this embodiment will be described below with reference to the drawings.

FIG. 1 is a diagram showing a work support of a thermal cutting machine according to this embodiment. As shown in FIG. 1, a work support 30 of the thermal cutting machine is installed on a support table to support a work W to be thermally cut. and a plurality of support pieces 35 arranged on the base plate 31 with a space therebetween and each supporting the work W. Each of the support pieces 35 is made up of a smaller plate body than the base plate 31 and is provided so as to cross the base plate 31 . The upper end portion 35a of the support piece 35 projects upward from the upper end portion 31a of the base plate 31 to support the workpiece W. As shown in FIG.

FIG. 2 is a diagram schematically showing the configuration of the laser processing machine according to this embodiment. A laser processing machine, which is an example of a thermal cutting machine to which the work support 30 according to the present embodiment is applied, will be described with reference to FIG. In the following description, as definitions of directions, the left-right direction X, the front-rear direction Y, and the up-down direction Z are defined, but these directions are used only for convenience of explanation. The left-right direction X and the front-rear direction Y correspond to the horizontal direction.

The laser processing machine 1 is a processing machine that laser-processes the workpiece W with a laser beam. A work W to be laser-processed is a sheet-like material, typically a sheet metal. A laser processing machine 1 mainly includes a base 2 , a support table 3 , a frame 4 , a processing head 5 , and a dust collector 6 .

The base 2 is assembled so as to be longitudinal in the horizontal direction X, for example, and has a thin rectangular parallelepiped shape in the vertical direction Z. Guide rails extending in the left-right direction X are provided at both ends of the base 2 in the front-rear direction Y, respectively.

The support table 3 is a table for supporting the workpiece W to be laser-processed. The support table 3 is composed of a frame member that is a rectangular frame, and is fixed on the base 2 . A plurality of work supports 30 extending in the front-back direction Y are arranged in the left-right direction X at predetermined intervals on the support table 3 . A gap is formed between each work support 30, and scraps generated by laser processing fall downward through the gap.

The frame 4 is a gate-shaped frame and is arranged along the front-rear direction Y so as to straddle the support table 3 . The frame 4 has a pair of side frames 41 and 42 extending in the vertical direction Z and an upper frame 43 extending in the front-rear direction Y. As shown in FIG. The frame 4 is configured to be movable in the horizontal direction X by being guided by the guide rails of the base 2 . A carriage (not shown) is mounted in the upper frame 43 . The carriage is configured to be movable in the front-rear direction Y. As shown in FIG.

The machining head 5 is attached to a carriage within the upper frame 43 . The processing head 5 irradiates the workpiece W with a laser beam supplied from a laser oscillator (not shown). A nozzle 51 for emitting a laser beam is detachably attached to the lower end of the processing head 5 . A circular opening is provided at the tip of the nozzle 51 , and the laser beam is applied to the work W from the opening at the tip of the nozzle 51 . Assist gas supplied from an assist gas supply source (not shown) is ejected from the tip of the nozzle 51 . By moving the frame 4 in the horizontal direction X and the carriage in the front-rear direction Y, the machining head 5 can move above the workpiece W in the horizontal direction X and the front-rear direction Y. As shown in FIG.

The dust collector 6 is a device that collects fumes and dust generated by laser processing (hereinafter simply referred to as "fumes"). A space serving as a dust collection chamber is formed inside the base 2, and the bottom of the support table 3 communicates with the dust collection chamber. An exhaust duct 61 is provided on one side of the base that extends in the left-right direction X. As shown in FIG. One end of the exhaust duct 61 is connected to the center of the side surface of the base, and the other end of the exhaust duct 61 is connected to the dust collector 6 . A dust collection chamber inside the base 2 and the dust collection device 6 are communicated with each other by an exhaust duct 61 .

The dust collector 6 has an exhaust fan rotated by a motor. When the exhaust fan rotates, the inside of the dust collector 6 becomes negative pressure, and the air in the support table 3 and the dust collection chamber is taken into the dust collector 6 via the exhaust duct 61 . The fumes ride on the air flow (assist gas jetted from the machining head 5) generated by the dust collector 6, pass between the workpiece supports 30, and are collected by the dust collector 6. FIG.

The laser processing machine 1 configured as described above moves the frame 4 and the carriage in the left-right direction X and the front-rear direction Y, respectively, and emits a laser beam from the processing head 5 and ejects an assist gas. Cutting is performed on the work W placed on the .

FIG. 3 is an enlarged view of the main part of the work support according to this embodiment. 4 is a view showing the AA section of the work support shown in FIG. 3. FIG. 5 is a diagram showing the base plate shown in FIG. 3. FIG. 6 is a view showing the support piece shown in FIG. 4. FIG. The configuration of the work support 30 will be described below with reference to FIGS. 1 and 3 to 6. FIG.

The work support 30 includes a base plate 31 and a plurality of support pieces 35.

The base plate 31 is a plate-shaped member extending in the front-rear direction Y, and is made of a metal material such as steel, for example, mild steel. The base plate 31 is arranged to straddle between a pair of frame members extending in the left-right direction X on the support table 3 , and both ends of the base plate 31 are fixed to the support table 3 . The base plate 31 fixed to the support table 3 stands vertically, for example. However, the base plate 31 only needs to stand up in the up-down direction Z, and does not necessarily have to be vertical.

The base plate 31 has a plurality of first protrusions 32 each extending upward. The plurality of first projecting portions 32 are provided on the upper end portion 31a of the base plate 31 and constitute a part of the base plate 31 (upper end portion 31a). The plurality of first protrusions 32 are spaced apart from each other in the front-rear direction Y. As shown in FIG. The plurality of first protrusions 32 are formed integrally with the base plate 31 and form the same plane as the base plate 31 .

The first protruding part 32 is a plate body elongated along the vertical direction Z. The width direction of the first projecting portion 32 corresponds to the longitudinal direction Y, which is the extending direction of the base plate 31 . The plate thickness direction of the first projecting portion 32 corresponds to the lateral direction X, which is the plate thickness direction of the base plate 31 . In this embodiment, the first projecting portion 32 has a tapered shape in which the width becomes narrower from the intermediate portion in the height direction toward the upper end portion 32a.

A first slit 34 is formed in the upper end portion 32a of the first projecting portion 32 . The first slit 34 is positioned at the center of the first projecting portion 32 in the width direction. The first slit 34 extends downward from the upper end 32a and has a constant depth. The width Wa<b>1 of the first slit 34 corresponds to the plate thickness t<b>2 of the support piece 35 .

The support piece 35 is made of a smaller plate than the base plate 31, and is made of a carbonaceous material such as a carbon fiber reinforced carbon composite material. The support piece 35 has a shape elongated in the up-down direction Z. As shown in FIG. The width direction of the support piece 35 corresponds to the left-right direction X, which is the plate thickness direction of the base plate 31 . The plate thickness direction of the support piece 35 corresponds to the front-rear direction Y, which is the extending direction of the base plate 31 . The plate thickness of the support piece 35 is smaller than the width of the upper end portion 32a (the portion having the minimum width) of the first projecting portion 32, and is preferably the same or approximately the same as the plate thickness of the base plate 31. A carbon fiber reinforced carbon composite material given as an example is a material that can be laser cut using a laser beam. The support piece 35 is formed by cutting out from a sheet material by laser cutting using a laser beam.

An upper end portion 35a of the support piece 35 is provided with a corner portion 36 forming a predetermined angle when viewed from the front in the perpendicular direction. The corner portion 36 is set to be convex upward. In this embodiment, the angle of the corner portion 36 is set to a predetermined reference angle, for example, 100° or more. The corner portion 36 is positioned at the center of the support piece 35 in the width direction, but may be positioned at a location shifted in the left-right direction X from the center.

A second slit 37 is formed in the lower end portion 35b of the support piece 35 . The second slit 37 is positioned at the center of the support piece 35 in the width direction. The second slit 37 extends upward from the lower end portion 35b and has a constant height. The width Wa<b>2 of the first slit 34 corresponds to the thickness t<b>1 of the base plate 31 . In this embodiment, the height of the second slit 37 corresponds to the depth of the first slit 34 described above.

The support piece 35 is inserted into the first slit 34 of the first projecting portion 32 . At this time, the first protrusion 32 is inserted into the second slit 37 of the support piece 35 . The support piece 35 sandwiches the base plate 31 inserted into the second slit 37 from both sides, and the first projecting portion 32 of the base plate 31 sandwiches the support piece 35 inserted into the first slit 34 from both sides. By fitting the second slit 37 of the support piece 35 and the first slit 34 on the side of the base plate 31 in this way, the upper end portion 31 a of the base plate 31 , specifically the first projecting portion 32 , is fitted. A support piece 35 is attached to it. The support piece 35 is provided so as to be orthogonal to the base plate 31 .

Since the base plate 31 is provided with a plurality of first protrusions 32 , a support piece 35 is provided for each of the first protrusions 32 . A plurality of support pieces 35 are provided on the upper end portion 31a of the base plate 31 at intervals in the front-rear direction Y. As shown in FIG.

The upper end portion 35a of the support piece 35 protrudes above the upper end portion 32a of the first protruding portion 32. As shown in FIG. Therefore, the work W is supported by a plurality of supporting pieces 35 arranged on the base plate 31 . The support of the work W by the individual support pieces 35 is performed by the apexes of the corners 36 .

A required space is provided between adjacent support pieces 35 among the plurality of support pieces 35 arranged on the base plate 31 . The distance D2 between the set of support pieces 35 located on the outermost side among the three adjacent support pieces 35 is the minimum product size after cutting from the viewpoint of preventing the cut product from standing up after cutting. It is desirable that: The distance D1 between adjacent support pieces 35 is determined based on the distance D2 resulting from the size of the minimum product. Specifically, the distance D1 is equal to or smaller than the size of the smallest product after cutting, for example 16 mm. As a result, it is possible to prevent the cut product from standing up after cutting.

Also, the space between the adjacent support pieces 35 has a height H1 from the base end of the first projecting portion 32 to the corner portion 36 of the support piece 35 . The height H1 is determined in consideration of the distance D1 so that a sufficient flow of dust can be obtained in the space between the adjacent support pieces 35 . For example, height H1 is 40 mm.

According to the support table 3 having such a configuration, the work W and the cut product can be supported by a plurality of work supports 30 arranged at regular intervals in the left-right direction X. Further, in each work support 30, a plurality of support pieces 35 arranged at regular intervals along the extending direction of the base plate 31 can support the work W and the cut product.

7 and 8 are diagrams schematically showing the flow of dust collection on the support table. 7 corresponds to a view of the support table 3 viewed from above, and FIG. 8 corresponds to a view of the support table 3 viewed from the horizontal direction X. FIG. The operation of collecting fumes by the dust collector 6 will be described below with reference to FIGS. 7 and 8. FIG.

Since the exhaust duct 61 is provided in the center of the side surface of the base extending in the left-right direction X, when the dust collector 6 is activated, the air around the work W moves along the left-right direction X toward the support table 3. While moving toward the center, it flows below the support table 3 through the gaps between the work supports 30 . Then, the air that has flowed below the work support 30 flows along the front-rear direction Y toward the exhaust duct 61 . The fumes generated by laser processing are guided by such air flow, pass through the dust collection chamber in the base 2 and the exhaust duct 61, and reach the dust collector 6. FIG.

As described above, according to the work support 30 according to this embodiment, the plurality of support pieces 35 are provided so as to be perpendicular to the base plate 31 . According to this arrangement, the alignment direction of the plurality of support pieces 35 and the width direction of each support piece 35 are orthogonal to each other, and the adjacent support pieces 35 face each other face-to-face. In order to suppress the rise of the cut product, it is necessary to arrange the support pieces 35 at a narrow pitch so that the distance between the corners 36 that directly support the cut product is small. However, since the adjacent support pieces 35 face each other face-to-face, a wide space can be secured between the adjacent support pieces 35 . As a result, it is possible to appropriately ensure the flow of dust that collects fumes while suppressing the rise of the cut product.

By increasing the width Wb2 of the support piece 35, the strength of the support piece 35 can be ensured without increasing the plate thickness of the support piece 35. Even if the width Wb2 of the support piece 35 is increased, the width of the space between the adjacent support pieces 35 is not affected. Therefore, it is possible to ensure the strength of the support piece 35 against the work load while ensuring the flow of collected dust. In addition, depending on the shape or size of the support piece 35, the strength against the work load can be controlled. Thereby, the work support 30 having the required strength can be realized only by designing the support pieces 35 .

The individual support pieces 35 are made of small plate bodies, and are attached to the base plate 31 so that the surfaces of the support pieces 35 are perpendicular to each other. Therefore, the left-right direction X and the up-down direction Z, which are the flow directions of collected dust toward the dust collection chamber located below the support table 3, correspond to the in-plane directions of the individual support pieces 35. FIG. As a result, the air heading for the dust collection chamber is rectified by passing through the gaps between the support pieces 35 . As a result, the flow of collected dust is properly ensured, so that fumes can be effectively collected.

Here, as a comparative example to the work support 30 according to the present embodiment, consider a work support in which individual support pieces are provided on the upper end of the base plate in parallel with the base plate. In this comparative example, the width direction of the support piece corresponds to the extending direction of the base plate. In order to obtain sufficient strength against the load of the work, it is necessary to increase the width of the supporting piece. Moreover, in order to suppress the rise of the cut product, it is necessary to arrange the supporting pieces close to each other along the extending direction of the base plate. However, since the direction in which the support pieces are arranged corresponds to the width direction of each support piece, the larger the width of the support pieces, the narrower the space between the adjacent supports. For this reason, it is difficult to achieve both the suppression of the rise of the cut product and the securing of the flow of collected dust. You can solve problems.

Further, according to the work support 30 of this embodiment, the support piece 35 that supports the work W and the cut product is made of a carbonaceous material. Therefore, it is possible to prevent problems such as the support piece 35 being melted or softened by the laser beam, or the support piece 35 being welded to the workpiece W or the cut product. Also, by forming the base plate 31 from steel, only the support piece 35 can be made of a carbonaceous material. As a result, the use of the carbonaceous material can be minimized, thereby suppressing an increase in cost.

In addition, since the support piece 35 is composed of a small piece plate, the support piece 35 can be cut out from a carbonaceous material plate by laser processing. As a result, the support piece 35 can be manufactured inexpensively and easily, and the total cost of the work support 30 can be suppressed.

In addition, since the base plate 31 is made of a plate-like member made of steel, it is possible to adopt the same configuration as the existing work support. Compatibility between the work supports applied to the support table 3 can be maintained by using the same thickness and shape as the existing work supports.

In addition, since the support piece 35 has a corner portion 36 at its upper end portion 35a, it is possible to support the work W and the cut product at points. Moreover, since Wb2 of the support piece 35 can be enlarged, the angle of the corner portion 36 can also be enlarged (for example, 100° or more). As a result, even if a notch is formed in the support piece 35 by the laser beam, it is possible to prevent the upper end portion 35a of the support piece 35 from becoming sharp. That is, even if the support piece 35 is partially sublimated by laser irradiation, the upper end portion 35a of the support piece 35 can be prevented from becoming sharp.

According to the work support 30 according to this embodiment, the support piece 35 can be easily attached to the base plate 31 by fitting the first slit 34 of the base plate 31 and the second slit 37 of the support piece 35 together. be able to. Since the base plate 31 and the support piece 35 can be mutually restrained by the first slit 34 and the second slit 37, the support piece 35 can be prevented from falling down without using fixing means.

Also, since the support piece 35 can be attached to and detached from the base plate 31, the support piece 35 can be replaced one by one. As a result, it is possible to replace only the support piece 35, which is a maintenance part, so that running costs can be suppressed.

In addition, since the support piece 35 is replaceable with respect to the base plate 31, the shape or size of the support piece 35 can be selected. As a result, the support piece 35 having an appropriate shape or size can be attached to the base plate 31 according to the processing conditions, work size, and product size to be cut.

In this embodiment, the plurality of support pieces 35 are provided in one-to-one correspondence with the plurality of first slits 34 in the base plate 31 . However, the plurality of support pieces 35 may be selectively provided with respect to the plurality of first slits 34 .

According to this configuration, it is possible to arbitrarily select the range or interval in which the plurality of support pieces 35 are arranged in the plurality of first slits 34 provided in the base plate 31 . Thereby, the arrangement of the plurality of support pieces 35 can be flexibly set according to the processing conditions or the size of the workpiece and product. In addition, since the degree of freedom with respect to the arrangement of the support pieces 35 can be increased, the initial cost at the time of introduction can be controlled.

According to this embodiment, the plurality of first slits in the base plate 31 are provided in the plurality of first protrusions 32 . Thereby, a large height H1 can be ensured in the space positioned between the adjacent support pieces 35 . Thereby, the flow of collected dust can be effectively ensured.

FIG. 9 is an enlarged view of the main part of the work support according to the first modified example. A work support 30 according to a first modified example will be described with reference to FIG. In the work support 30 according to the first modification, the upper end portion 31a of the base plate 31 is configured as a linear portion extending linearly along the front-rear direction Y. As shown in FIG. A plurality of first slits 34 to which the support pieces 35 are attached are provided at intervals in the upper end portion 31a, which is a linear portion.

According to the work support 30 according to the first modification, since the adjacent support pieces 35 face each other face-to-face, a sufficient space can be secured between the adjacent support pieces 35. can. As a result, even if the height H2 in the space is small, it is possible to secure the necessary dust flow. For example, height H2 is 20 mm. The size of the support piece 35 in the vertical direction Z can be made compact. In addition, since the flow of collected dust can be controlled according to the shape or size of the support piece 35 , a desired flow of collected dust can be obtained only by designing the support piece 35 . As a result, it is possible to secure the flow of collected dust for collecting fumes while suppressing the rise of the cut product.

FIG. 10 is an enlarged view of a main part of a work support according to a second modified example. FIG. 11 is an explanatory diagram showing the relationship between the work and the work support. A work support 30 according to a second modification will be described with reference to FIGS. 10 and 11. FIG. In the work support 30 according to the second modification, any of the plurality of first protrusions 32 described above is replaced with a second protrusion 33 . By such replacement, one or more second protrusions 33 are provided between a pair of first protrusions 32 adjacent to each other on the upper end portion 31a of the base plate 31 . The second projecting portion 33 is a plate body elongated in the up-down direction Z, like the first projecting portion 32 . However, the second projecting portion 33 is higher than the first projecting portion 32 and lower than the support piece 35 attached to the first projecting portion 32 . The second projecting portion 33 is not provided with the first slit 34 and the support piece 35 is not attached.

According to this configuration, the upper end portion 31a of the base plate 31 is provided with the first projecting portion 32 and the second projecting portion 33, and only the first projecting portion 32 is provided with the support piece 35. . With this configuration, the number of support pieces 35 mounted on the work support 30 can be reduced, so the cost of the work support 30 can be reduced. In addition, since a predetermined gap G is formed between the second projecting portion 33 and the workpiece W, welding between the second projecting portion 33 made of steel and the workpiece W or the cut product can be prevented. can. On the other hand, since the interval between the support pieces 35 becomes wider, there is a possibility that the cut product will rise. However, as shown in FIG. 11, since the second protrusions 33 exist between the adjacent first protrusions 32, by providing an appropriate gap G between the work W and the cut product, , it is possible to prevent the cut product from rising excessively. As a result, it is possible to secure the flow of collected dust for collecting fumes while suppressing the rise of the cut product.

Note that in this embodiment, the support piece 35 is perpendicular to the base plate 31 . However, the support piece 35 only needs to intersect the base plate 31 . For example, the support piece 35 may be inclined from a direction orthogonal to the base plate 31 in accordance with the direction of the flow of collected dust.

In addition, in the present embodiment, the carbonaceous material is exemplified as the material forming the support piece 35 . However, non-metallic materials such as ceramics may also be used.

Also, the method of attaching the support piece 35 to the base plate 31 is not limited to the method described above. For example, when the base plate 31 has an appropriate plate thickness, the plate thickness of the support piece 35 extending in the direction intersecting the extending direction of the base plate 31 on the upper end portion 31a (upper surface) of the base plate 31 You may provide a groove|channel of the width corresponding to . Accordingly, by inserting the support piece 35 into the groove on the upper surface of the base plate 31 , the support piece 35 can be attached to the upper end portion 31 a of the base plate 31 . Moreover, a pair of protrusions may be provided on the upper surface of the base plate 31 at a distance corresponding to the thickness of the support piece 35 instead of providing the groove on the upper surface of the base plate 31 . In this case, the support piece 35 can be attached to the upper end portion 31a of the base plate 31 by sandwiching the support piece 35 between the pair of protrusions.

Although the embodiments of the present invention have been described as above, the statements and drawings forming part of this disclosure should not be understood to limit the present invention. Various alternative embodiments, implementations and operational techniques will become apparent to those skilled in the art from this disclosure.

The disclosure of this application relates to the subject matter described in Japanese Patent Application No. 2021-041488 filed on March 15, 2021, and all disclosures thereof are incorporated herein by reference.

Claims

a vertically standing base plate installed on a support table to support a work to be thermally cut;
a plurality of support pieces provided on the base plate at intervals and each supporting the work,
each of the support pieces is composed of a plate body that is smaller than the base plate, and is provided so as to intersect the base plate;
A work support for a thermal cutting machine, wherein the upper end of the support piece protrudes above the upper end of the base plate to support the work.
The base plate is made of steel,
2. A work support for a thermal cutting machine according to claim 1, wherein each of said support pieces is made of a carbonaceous material.
each of the support pieces includes a corner portion forming a predetermined angle in a front view from a perpendicular direction at the upper end portion of the support piece;
3. A work support for a thermal cutting machine according to claim 1, wherein the work is supported at apexes of the corners.
4. A work support for a thermal cutting machine according to claim 3, wherein each of said support pieces is made of a material that can be laser cut using a laser beam.
4. A work support for a thermal cutting machine according to claim 3, wherein the distance between said support pieces is equal to or less than the size of the minimum product.
The base plate includes a plurality of first slits provided at the upper end of the base plate at intervals, each having a width corresponding to the thickness of the support piece,
6. The thermal cutting machine according to any one of claims 1 to 5, wherein each of said support pieces includes a second slit provided at the lower end of said support piece and having a width corresponding to the thickness of said base plate. work support.
The thermal cutting machine according to claim 6, wherein the plurality of support pieces are provided in one-to-one correspondence with the plurality of first slits, or are selectively provided with respect to the plurality of first slits. work support.
the base plate includes a plurality of first protrusions provided on an upper end of the base plate at intervals and each extending upward;
The work support for a thermal cutting machine according to claim 6 or 7, wherein the plurality of first slits are provided in the plurality of first protrusions.
The upper end of the base plate is configured as a linear portion extending linearly along the horizontal direction,
8. The work support for a thermal cutting machine according to claim 6, wherein the plurality of first slits are provided in the linear portion at intervals.
The base plate includes a second protrusion provided at the upper end of the base plate and having a height lower than the upper end of the support piece,
9. The work support for a thermal cutting machine according to claim 8, wherein one or more of said second protrusions are provided between a pair of said first protrusions adjacent to each other.