JP5960026B2 - Thermal cutting machine - Google Patents

Description

  The present invention relates to a thermal cutting machine such as a laser processing machine, a plasma processing machine, or a gas cutting machine, and more particularly to a thermal cutting machine having a dust collector that sucks dust generated during processing.

  In a laser processing machine as an example of a thermal cutting machine, dust is generated at the time of processing, and the working environment is deteriorated. Therefore, an exhaust duct provided inside is connected to a dust collector placed outside via a connecting duct to remove dust. Exhaust is performed by a dust collector through an exhaust duct (see Patent Documents 1 and 2). Since laser processing machines use oxygen as an assist gas during processing, this assist gas makes the dust collector excessively oxygen, and also processes iron works containing aluminum and oil that are prone to dust explosion. Inflammable metal dust enters the dust collector. For this reason, for example, in the dust collector described in Patent Document 1, fire prevention / digestion measures are taken in the event of a fire in the dry dust collector.

JP 2004-202005 A JP 2009-28785 A

  By the way, as a cause of a fire in the dust collector, when a powder mixture of metal oxide and metal aluminum is ignited, there is a so-called thermite reaction in which aluminum generates a high temperature while reducing the metal oxide. For this reason, when switching the material of the workpiece to be processed, the inside of the dust collector is generally cleaned in advance, but the operator controls only the processing machine at the time of switching to clean the dust collector. There is a possibility of forgetting, and further improvement is desired.

  This invention is made | formed in view of the subject mentioned above, The objective is to provide the thermal cutter which can clean a dust collector reliably, when the material of the workpiece | work to process changes. is there.

The above object of the present invention can be achieved by the following constitution.
That is, the invention according to claim 1
A thermal cutting machine body that cuts an iron or aluminum workpiece placed on the table by heat generated from the processing head;
A dust collector that sucks dust generated in the thermal cutting machine body from the thermal cutting machine body and removes the dust from the air;
A thermal cutting machine having
The dust collector includes a cleaning unit that cleans the dust attached to the dust collector, and a dust collector side control unit that controls the cleaning unit,
The thermal cutting machine main body has an input means for inputting the material of the work to be cut, and when the material of the work inputted to the input means is different from the material of the work that has been cut last time, A main body side control unit for transmitting a signal,
The dust collector side control unit operates the cleaning means by the signal transmitted from the main body side control unit when the material of the work to be cut by the thermal cutting machine main body is switched. Cutting machine.

The invention of claim 2 is the configuration of claim 1,
The dust collector has an iron recovery container, an aluminum recovery container, a container base on which the iron recovery container and the aluminum recovery container are placed, and a driving means for driving the container base,
The dust collector side control unit is driven by the signal transmitted from the main body side control unit when the material of the workpiece to be cut by the thermal cutting machine main body is changed and the cleaning by the cleaning unit is completed. The container base is driven by operating the means so that the positions of the iron recovery container and the aluminum recovery container are switched.

  According to claim 1, when the material of the workpiece to be processed is switched, the dust collector can be reliably cleaned.

  According to the second aspect, when the material of the workpiece to be processed is switched, the recovery container can be switched reliably.

1 is a schematic plan view of a laser beam machine according to an embodiment of the present invention. It is a schematic side view of the laser processing machine shown in FIG. It is a perspective view of a processing head drive mechanism. It is a perspective view of the processing head accommodated in the housing. It is a rear view of the laser processing machine shown in FIG. FIG. 2 is a lower plan view of the laser processing machine shown in FIG. 1. It is a front view which shows the outline inside the dust collector which concerns on this invention. It is a left view which shows the outline inside the dust collector shown in FIG. It is a longitudinal cross-sectional rear view of a pre-processing box. It is AA sectional drawing in FIG. It is a principal part cross-sectional front view of a protrusion hole shielding board. It is a partially broken perspective view of a filter. It is a cross-sectional top view of the filter shown in FIG. It is a figure which shows the operation process of a thermal cutting machine.

Hereinafter, as an example of a thermal cutting machine according to the present invention, an embodiment of a laser beam machine will be described in detail with reference to the drawings.
As shown in FIGS. 1 and 2, the laser processing machine 10 includes a processing machine main body (thermal cutting machine main body) 20, a laser oscillator 21 and a control device (main body side control unit) 22 incorporated in the processing machine main body 20. Assist provided with a pallet changer 23 connected to the processing machine main body 20 and a booster compressor 24 or an air compressor 25 used for separating nitrogen gas in the air or a nitrogen and oxygen gas cylinder 26 It mainly includes a gas supply unit 27, a chiller unit 28 for supplying cooling water for cooling the laser oscillator 21 and the laser processing head 40, and a dust collector 29 for removing dust generated during processing from the air.
In the present embodiment, the front represents a direction closer to the processing machine main body 20 in the arrangement direction of the processing machine main body 20 and the pallet changer 23 (X direction in FIG. 1), and the rear represents the pallet in the arrangement direction. This represents the direction closer to the changer 23. Further, the left side and the right side are represented by directions when the front is viewed from the rear in a direction (Y direction in FIG. 1) orthogonal to the arrangement direction.

  In the cabin 30 of the processing machine body 20, a pallet driving mechanism 32 that drives the pallet 31 in the longitudinal direction (X direction) of the cabin 30, which is a predetermined direction, and a workpiece W mounted on the pallet 31 are processed. A laser processing head 40 for irradiating laser light, a processing head drive mechanism 49 for driving the laser processing head 40, and a recovery conveyor 60 for recovering chips and the like cut during processing are accommodated.

As shown in FIG. 3, the machining head 40 can be moved in the X direction, the width direction (Y direction) of the cabin 30, and the vertical direction (Z direction) of the cabin 30 by a machining head drive mechanism 49. Specifically, a pair of support bases 41 provided on the left and right sides are arranged so as to straddle a beam-shaped X-direction movable base 42, and the X-direction movable base 42 is driven in the X direction by an X-axis motor 43. . The X-direction movable table 42 is provided with a Y-direction movable table 45 that is driven by a Y-axis motor 44 and can move in the Y direction. The Y-direction movable table 45 is driven in the Y direction by a rack and pinion mechanism in which a not-illustrated pinion fixed to the rotation shaft of the Y-axis motor 44 meshes with a rack (not illustrated) arranged in the X-direction movable table 42. The Further, the machining head 40 is disposed on the Y-direction movable table 45 so as to be movable in the Z direction using a rack and pinion mechanism driven by a Z-axis motor 46.
Note that the machining head 40 indicated by the solid line in FIG. 1 and the dotted line in FIG. 2 represents the most forward position in the X direction, and the machining head 40 indicated by the alternate long and short dash line in FIGS. The state located at is shown.

  A fiber cable (only the tip is shown) 50 extending from the laser oscillator 21 is connected to the processing head 40 by being routed through an X-direction cable bear 48x and a Y-direction cable bear 48y. Further, in the processing head 40, a collimator lens 51 for collimating the laser light emitted from the exit end of the fiber cable 50 and a condensing lens 52 for condensing the collimated laser light. And the condensing lens 52 is provided such that its position can be adjusted in the Z direction with respect to the processing head 40. In addition, since the well-known thing is applicable for the structure of the laser oscillator 21, detailed description is abbreviate | omitted.

  Further, as shown in FIG. 4, a cooling pipe 56 supplied from the chiller unit 28 is connected around the processing head 40, and cools the emission end of the fiber cable 50 and the periphery of the condenser lens 52. . Further, around the processing head 40, a gas supply pipe 57 that supplies an assist gas of nitrogen gas or oxygen gas from the assist gas supply unit 27 to the processing head 40 and the vicinity of the laser nozzle 53 of the processing head 40. In addition, another gas supply pipe 58 connected to the side nozzle 54 for blowing an assist gas of nitrogen gas or oxygen gas is provided.

  The cooling pipe 56 and the gas supply pipes 57 and 58 are routed to the X-direction cable bear 48x and the Y-direction cable bear 48y together with the fiber cable 50 after passing through the Z-direction cable bear 48z. Then, the chiller unit 28 and the assist gas supply unit 27 are connected.

  When the processing head 40 operates the laser oscillator 21, the laser beam is collimated by the collimator lens 51 via the fiber cable 50, and the collimated laser beam is incident on the condenser lens 52 and condensed. Then, the workpiece W is processed by being irradiated from the laser nozzle 53 onto the processing portion of the workpiece W. At the time of processing, the assist gas supplied from the assist gas supply unit 27 is ejected from the laser nozzle 53 and the side nozzle 54 toward the processing unit of the workpiece W, and the molten metal generated during the processing is blown off.

  As shown in FIGS. 1 and 2, the pallet driving mechanism 32 is disposed at a position facing the right side surface of the pallet 31 along the X direction, and an endless chain 34 that is rotationally driven by a drive motor 33, and the pallet 31. A plurality of rollers 36 provided on the lower surface side of the roller are guided to roll and have a rail 35 that supports the pallet 31. When the endless chain 34 is rotationally driven by the drive motor 33, a pin (not shown) provided on the endless chain 34 engages with an engaging portion (not shown) of the pallet 31, and the pallet on the rail 35. 31 is moved in the X direction.

  The cabin 30 is provided with a gull wing 38 as an opening / closing door on the front surface 30F, and a loading / unloading port 37 formed in a horizontally long slit shape on the back surface 30R opposite to the front surface 30F corresponding to the pallet changer 23. It has been. Thus, when processing a large lot product, the pallet 31 on which the workpiece W is placed is loaded / unloaded via the loading / unloading port 37, and when processing a small lot product, the workpiece W is loaded / unloaded from the gull wing 38 to correspond to the size of the lot. Can be carried out.

  Further, a first operation panel (input means) 75 is disposed on the side of the gull wing 38 on the front surface 30F, and a second operation panel (input means) 70 is disposed on the left side surface 30L orthogonal to the front surface 30F and the rear surface 30R. It is arranged near the back surface 30R. Further, a foot switch 76 is disposed below the gull wing 38 on the front surface 30F of the cabin 30.

  As shown in FIGS. 1, 2, and 5, the pallet changer 23 is disposed to face the back surface 30 </ b> R of the cabin 30 provided with the loading / unloading port 37. The pallet changer 23 has a movable frame 62 that is driven up and down by a drive mechanism 61 shown in FIG. 1, and two pallets 31 are placed on a substantially U-shaped rail 63 provided on the left and right sides of the movable frame 62. Two stages can be arranged vertically.

  The upper pallet 31 is placed on the upper rail surface 63 a of the U-shaped rail 63, and the lower pallet 31 is placed on the lower rail surface 63 b of the U-shaped rail 63. . The pallet 31 arranged in two stages on the U-shaped rail 63 moves the pallet 31 on the substantially U-shaped rail 63 up and down by driving the movable frame 62 up and down by the drive mechanism 61, so that the cabin The height of the pallet 31 can be adjusted so as to be the same height as the rail 35 disposed in the pallet 30, and the pallet 31 positioned at the same height as the rail 35 is connected to the pallet changer 23 and the cabin 30 via the loading / unloading port 37. You can carry in and out.

Also, below the movable frame 62, a free bearing 64 for moving the workpiece W on the pallet 31 so as to abut the workpiece W against the reference of the pallet 31 is provided so as to be movable up and down (see FIG. 5).
In FIG. 1 and FIG. 2, reference numeral 65 denotes another foot switch for operating the drive mechanism 61 that drives the free bearing 64 up and down.

  As shown in FIG. 1, a sensor composed of a projector 71, a reflector 72, and a light receiver 73 is disposed at each corner of the work area WA surrounding the pallet changer 23, and the light emitted from the projector 71 is By reflecting by the three reflecting plates 72 and receiving light by the light receiver 73, the entry / exit of the worker into the work area WA is monitored. In addition, an area sensor 74 is provided on the back surface 30R of the cabin 30 to detect the presence or absence of an operator in the work area WA. When the sensor composed of the projector 71, the reflector 72, and the light receiver 73 or the area sensor 74 is activated, it is determined that there is an operator in the work area WA and the operation of the laser processing machine 10 is prohibited. Operator safety is ensured.

  As shown in FIG. 6, the pallet 31 as a table on which the laser processing head 40 and the workpiece W are placed is a frame provided in the cabin 30 via the processing head drive mechanism 49 and the pallet drive mechanism 32. 80 is supported. Specifically, the frame 80 includes a support base 41 of the machining head drive mechanism 49 and an endless chain 34 and a rail 35 of the pallet drive mechanism 32. In the frame 80, a pair of duct chambers 90 extending along the X direction are formed.

  In the pair of duct chambers 90, connection ducts 91 are respectively connected to suction ports 90 a provided on the back surface 30 </ b> R side of the cabin 30, and are unified by a coupling portion 92 provided on the back surface of the cabin 30. Then, it is connected to the dust collector 29 via another connection duct 93 (see FIG. 1).

  In the frame 80, a plurality of exhaust chambers 95a, 95b, 95c, and 95d partitioned by a plurality of partition members 84 are formed. The plurality of exhaust chambers 95a, 95b, 95c, and 95d, and a duct chamber 90 communicates with a plurality of exhaust ports (not shown). Thereby, when the dust collector 29 sucks, the dust in each exhaust chamber 95a, 95b, 95c, 95d is sent to the dust collector 29 via a pair of duct chamber 90, the connection duct 91, and the other connection duct 93. .

  As shown in FIGS. 7 and 8, the dust collector 29 is formed in a box shape, and the inside of the dust collector 29 is divided into a duct chamber 120, a filter chamber 130, a dusting drive chamber 140, an intake chamber 150, and a dust collection chamber 160. It is partitioned.

  A connection port 111 to which another connection duct 93 routed from the laser processing machine is connected is provided at the lower side of the side surface of the dust collector 29, and air from the laser processing machine is provided in the upper intake chamber 150. Then, the air is sucked into the dust collector 29 from the connection port 111 by the intake fan 151, and is discharged from the exhaust port (not shown) opened to the upper portion of the intake chamber 150 through the duct chamber 120, the filter chamber 130 and the removal drive chamber 140. . Here, the dust generated from the laser processing machine is filtered by the filter 132 of the filter chamber 130, and the clean air from which the dust has been removed is discharged from the exhaust port.

  The duct chamber 120 is provided with a pretreatment box 122 that constitutes a part of a duct for introducing air from the laser processing machine into the filter chamber 130. Connected to the upstream side of the pretreatment box 122 is a connection duct 121 that sends air flowing from the connection port 11 to the pretreatment box 122.

  As shown in FIGS. 9 and 10, the pretreatment box 122 is formed in a rectangular parallelepiped shape, and is provided with an inflow port 124 through which air flows into one end side and an outflow port 125 through which air flows out through the other end side. The box main body 123 is configured to include a plurality of shielding plates 126 and 127 that partition the box main body 123.

  Here, as the shielding plates 126 and 127, a flat hole shielding plate 126 having a large number of through holes with flat holes and a protruding hole shielding plate 127 having a large number of through holes provided with protrusions around the holes. Two types of shielding plates 126 and 127 are used.

  The flat hole shielding plate 126 is made of punch metal in which a large number of circular through holes having a diameter of 1 mm are formed in a zigzag pattern with a pitch of 2 mm. Further, as shown in FIG. 11, the protruding hole shielding plate 127 is constituted by a metal plate in which a protruding portion 127 b is formed around the through hole 127 a on one side by burring, and each through hole of the protruding hole shielding plate 127 is formed. The holes 127a have a circular shape with a diameter of 3.5 mm, and are arranged in a grid pattern with a pitch of 20 mm. Thus, in this example, a plurality of types (two types) of shielding plates 126 and 127 having different hole sizes and arrangement positions are employed.

  As shown in FIGS. 9 and 10, a plurality of flat hole shielding plates 126 are provided, and each flat hole shielding plate 126 has no gap between the inner side of the box main body 123 and the side portion in the box main body 123. On the other hand, the upper and lower portions are alternately arranged in a standing state rising from the bottom surface of the box body 123 and a hanging state hanging from the top surface of the box body 123 so that a gap is formed in the upper or lower portion. Yes.

  On the other hand, the protruding hole shielding plate 127 is disposed in an inclined state from the lower end of the flat hole shielding plate 126 in the suspended state to the upper end of the flat hole shielding plate 126 in the standing state. Further, the protruding hole shielding plate 127 is arranged such that a gap is not formed between the side portion and the inner surface of the box body 123 while a gap is formed at the upper portion. Further, the protruding hole shielding plate 127 is arranged with the protruding portion around the through hole facing the upstream side of the air flow.

  Further, in this example, an introduction shielding plate 128 is disposed in the most upstream portion of the box body 123. The introduction shielding plate 128 has a projecting portion around the through hole on the one surface side in the same manner as the projecting hole shielding plate 127 described above, but is disposed with the projecting portion facing downstream. Further, the introduction shielding plate 128 is in an inclined state so as to contact the upper end of the most upstream flat hole shielding plate 126, the lower end abutting the lower part of the inlet 124, and the upper end abutting the top surface of the box body 123. It is arranged by. The introduction shielding plate 128 is disposed so that a gap is formed between the introduction shielding plate 128 and the inner surface of the box body 123 on both sides of the introduction shielding plate 128.

  Further, at the four corners of the box body 123, additional members 129 having a triangular cross section are arranged so that air does not stagnate around the corners.

  The flow of air passing through such a pretreatment box 122 is an extremely complicated flow as follows, and fine dust contained in the air collides with each other and changes to large particle dust.

  As shown in FIG. 9, first, the air flowing in from the inflow port 124 flows around the lower sides of the introduction shielding plate 128 (arrow a) and flows around the upper sides of the introduction shielding plate 128 (arrow b). And a flow (arrow c) passing through the through hole of the introduction shielding plate 128. Then, a part of the flow of the arrow a and the flow of the arrow c becomes a flow (arrow d) passing through the through hole of the flat hole shielding plate 126 in the standing state.

  The flow of the arrows b, c, and d then flows through the through hole in the lower part of the protruding hole shielding plate 127 (arrow e) and flows through the through hole of the flat hole shielding plate 126 in the suspended state (arrow). f). Then, the flow of the arrow f becomes a flow (arrow g) that passes through the upper through hole of the protruding hole shielding plate 127 and a flow (arrow h) that gets over the upper end of the protruding hole shielding plate 127. Further, the flow of the arrows e and g becomes a flow (arrow i) that passes through the through hole of the flat hole shielding plate 126 in the standing state thereafter.

  Thus, the flow of air passing through the pretreatment box 122 becomes a very complicated flow, and the fine dust contained in the air collides with each other and efficiently changes to dust of large particles. In addition, the air passing through the through hole of the protruding hole shielding plate 127 becomes a complicated flow due to the protruding portion before entering the through hole, and from this point, fine dust becomes more large particle dust. Change more efficiently.

  Since the air flow in the pretreatment box 122 is complicated, dust easily adheres to the inner surface of the box main body 123 and the shielding plates 126, 127, and 128 in the pretreatment box 122. Therefore, in this example, although not shown, a hammer device (cleaning means) that is driven by an appropriate actuator and strikes the outer surface of the box body 123 is provided, and the box body is impacted by the operation of the hammer device. By giving it, the attached dust drops off. In addition, the fallen dust may be recovered from the recovery port by providing a recovery port on the bottom surface of the box body 123. However, when the dust collector 29 itself has a sufficient dust collection capability. In this case, the dust dropped in the pretreatment box 122 can be filtered by the filter 132 by the operation of the dust collector 29.

  As shown in FIGS. 7 and 8, the air containing dust that has changed into large particles in the pretreatment box 122 passes through a dedicated connection duct (not shown) individually connected to the outlet 125 of the pretreatment box 122. Dust is introduced into the filter chamber 130 from the inlet 131, filtered to clean air by the filter 132 disposed in the filter chamber 130, and then discharged from the exhaust port through the drive-off chamber 140 and the intake chamber 150. The

  Further, a dust collection chamber 160 is provided below the filter chamber 130. Dust removed from the filter 132 by the iron collection container 162A and the aluminum collection container 162B placed in the dust collection chamber 160 is provided. Is recovered. Here, the bottom surface of the filter chamber 130 is an inclined surface so as to incline downward toward the waste outlet 161 communicating with the dust collection chamber 160. The waste outlet 161 is provided with an on-off valve (not shown). The dust removed from the filter 132 accumulates above the closed waste outlet 161. However, the accumulated dust can be dropped by opening the opening / closing valve of the waste outlet.

  In this example, two recovery containers 162A and 162B configured using 20-liter general-purpose steel cans are placed on a container base 163 that can be pulled out from the dust recovery chamber 160 (see arrow A in FIG. 7). Has been. The container base 163 can be moved up and down and horizontally moved by a driving mechanism (driving means) 164. By raising the container base 163, the upper opening of the collection containers 162A and 162B can be brought into close contact with the waste outlet 161. It is. Thereby, by opening the opening / closing valve of the waste outlet 161 while the dust collector 29 is in operation, the dust can be always dropped into the collection containers 162A and 162B. On the other hand, when discarding the dust accumulated in the collection containers 162A and 162B, the open / close valve of the disposal port 161 is closed, the container base 163 is lowered and pulled forward, whereby the collection containers 162A and 162B with accumulated dust are removed. It can be taken out from the dust collector 29. Moreover, since the filter chamber 130 can be shut off from the outside by closing the disposal port 161, the dust collector 29 can be kept in operation even when the collection containers 162A and 162B are taken out.

  Further, in this example, a dusting device (cleaning means) that can automatically dust off the dust attached to the filter 132 is adopted, and periodically or when the dust collecting ability is reduced, in a timely manner, By operating the dusting device, dust adhering to the filter 132 can be removed without relying on manual work.

  Next, details of the pay-off device will be described. As shown in FIGS. 12 and 13, the filter 132 has a cylindrical filter material 136 having a bellows shape in the circumferential direction and an inner bellows portion exposed in a hollow portion inside. Here, the filter material 136 is formed in a star shape in cross section by bending a sheet material made of thickly crumpled paper, a nonwoven fabric having sufficient rigidity, or the like into a zigzag shape and bending it into an annular shape. In addition, an annular first cap 138 is provided at the upper end of the filter material 136, and a saucer-shaped second cap 137 is provided at the lower end of the filter material 136, and the filter material 136 is formed by the first cap 138. The shape of the upper end portion of the filter material 136 is held, and the shape of the lower end portion of the filter material 136 is held by the second cap 137.

  The dropping device includes a rotating shaft 133 that is inserted through a hollow portion of the filter material 136 that is an axial portion of the cylindrical filter 132, and a protruding piece 135 that protrudes in the radial direction of the rotating shaft 133. It is configured. A sprocket 134 (see FIGS. 7 and 8) is attached to the upper portion of the rotary shaft 133. The rotary shaft 133 is driven by a motor installed in the drive-off chamber 140 via a chain (not shown). Driven by rotation.

  In this example, one filter unit is configured by a total of 16 filters 132 arranged in four rows on the left and right and four in the depth. Further, the rotary shaft 133 provided in each filter 132 is dropped at the upper portion and supported on the bottom surface of the drive chamber 140 so as to be rotatable but not movable up and down, and is driven to rotate in units of filter units.

  The filter 132 is fixed to the top surface of the filter chamber 130 via the upper first cap 138 and is suspended from the filter chamber 130. Here, in the conventional filter having a star-shaped cross section, a cylindrical core member is required in the hollow portion in order to hold the bellows on the inner surface side of the filter material. The lower end portion of the rotating shaft 133 is supported by the lower second cap 137 so as to be rotatable but cannot be moved up and down. The rotating shaft 133 ensures sufficient rigidity as the filter 132.

  The projecting piece 135 of the rotating shaft 133 slightly touches the bellows portion 136a on the inner side of the filter material 136 (specifically, so that the protruding portion 135 beats the bellows portion exposed to the inside of the filter material 136 with the rotation of the rotating shaft 133). 1 to 5 mm). The protruding piece 135 is made of a resin such as urethane rubber, and is configured to have sufficient wear resistance and appropriate elastic force.

  By rotating the rotating shaft 133 and hitting and playing the bellows portion 136a inside the filter material 136 with the projecting piece 135, the dust adhering to the filter 132 can be accurately removed. Further, the filter 132 of the present example filters dust by circulating air from the outside to the inside on the peripheral surface of the filter material 136. The valley portion of the bellows as viewed from the outside (the bellows as viewed from the inside). A lot of dust adheres to the back of the mountain). Therefore, by adhering and flipping the bellows portion 136a on the inner side of the filter material 136 with the protruding piece 135, the attached dust can be efficiently removed. Further, in the dust collector 29 of this example, fine dust is changed into large particles by the pre-processing box 122, and the dust of the large particles is attached to the filter 132. Therefore, the dust adhering to the filter 132 can be satisfactorily dropped by hitting and flipping the filter material 136 with the protruding piece 135.

  As mentioned above, although the example of the dust collector 29 which concerns on this invention was demonstrated, the dust collector 29 which concerns on this invention is not restricted to the above-mentioned example, In the range which does not deviate from the summary of this invention, an appropriate change is possible.

  For example, the duct having the shielding plate (the flat hole shielding plate 126 and the protruding hole shielding plate 127) inside the pretreatment box 122 is not limited to the one arranged in the duct chamber 120 in the dust collector 29, but the dust collector 29. It may be installed outside and connected to the dust collector 29. Further, it may be provided around the laser processing machine or in the frame of the laser processing machine and connected to the dust collector main body 10 through an appropriate connection duct. Thus, even if a duct having a shielding plate (flat hole shielding plate 126, protruding hole shielding plate 127) inside is disposed outside the dust collector 29, the duct and the dust collector 29 as a whole include the duct. The dust collector 29 can be configured.

  Here, as shown in FIG. 1, the dust collector 29 includes a dust collector that controls a hammer device of the pretreatment box 122, a removal device of the filter 132, and a drive mechanism 164 that moves the container bases 163 of the recovery containers 162 </ b> A and 162 </ b> B. A side control unit 29a is provided, and the dust collector side control unit 29a is electrically connected to the input unit 29b of the dust collector 29 and the control device 22 of the processing machine body 20 so as to be able to transmit and receive signals.

  When the workpiece processing conditions including the material of the workpiece to be cut are input on the first operation panel 75 or the second operation panel 70 of the processing machine body 20, the control device 22 determines that the material of the workpiece is When it is different from the material of the workpiece cut last time, that is, when switching from iron to aluminum or from aluminum to iron, a signal is transmitted to the dust collector-side control unit 29a. In the dust collector 29, the hammer device and the dusting device are operated based on the signal, and the positions of the collection containers 162A and 162B are switched when the cleaning is completed.

  Hereinafter, with reference to FIG. 14, an operation process of the processing machine body 20 and the dust collector 29 will be described by taking as an example a case where the material of the workpiece is switched. Specifically, an aluminum plate is continuously processed from an iron SPCC plate in this order using the pallet changer 23.

  That is, after carrying in the SPCC, replacing the pallet changer 23, and pre-setting, the SPCC plate is cut. At the same time as the cutting process, the pallet changer 23 performs preparatory work for the aluminum plate (loading of the aluminum plate, replacement of the pallet changer 23, and pre-setting) after taking out the previous product. During the preparation of the aluminum plate, the SPCC plate pallet 31 cannot be carried out even if the processing of the SPCC plate has been completed. It becomes. The pre-setup includes opening operation of the safety door provided at the loading / unloading port 37, nozzle replacement, closing operation of the safety door, program set, and machining start time.

In addition, after the aluminum plate is carried in, the first or second operation panel 75 or 70 is controlled. When the control device 22 determines that the work of the aluminum plate is switched from the SPCC plate, this control signal is sent to the dust collector 29. To the dust collector side control unit 29a, and cleaning is performed by a hammer device or a dusting device. After the cleaning is completed, after the dust that has fallen off from the waste outlet 161 by the cleaning is recovered by the iron recovery container 162A, the dust collector-side control unit 29a performs the operation of the hammer device and the removal device, The drive mechanism 164 is driven to switch the positions of the recovery containers 162A and 162B so that the aluminum recovery container 162B is positioned below the disposal port 161.
In addition, when the material of the workpiece to be processed is switched from aluminum to a steel plate, the same operation as described above is performed. In addition, the dust collector 29 has a hammer device and a removal device when the pretreatment box 122 and the filter 132 are kept clean by cleaning periodically performed in the process of removing dust from the air. Only one of them may be cleaned at the time of switching.

  As described above, according to the laser processing machine 10 of the present embodiment, the dust collector 29 includes the hammer device and the dusting device, the hammer device, and the dusting device for cleaning the dust attached to the pretreatment box 122 and the filter 132. The processing machine body 20 includes a first or second operation panel 75 or 70 for inputting a material of a workpiece to be cut, and a first or second operation panel 75 or 70. And a control device 22 that transmits a signal to the dust collector-side control unit 29a when the material of the workpiece input to the workpiece is different from the material of the workpiece that was cut last time. The dust collector-side control unit 29a When the material of the workpiece to be cut is switched, the hammer device and the removal device are operated by a signal transmitted from the control device 22. Thereby, when the material of the workpiece to be processed is switched, the dust collector 29 can be reliably cleaned.

  The dust collector 29 includes an iron collection container 162A, an aluminum collection container 162B, a container table 163 on which the iron collection container 162A and the aluminum collection container 162B are placed, and a drive mechanism 164 that drives the container table 163. The dust collector-side control unit 29a has a signal transmitted from the control device 22 when the material of the workpiece to be cut by the processing machine body 20 is switched, and the cleaning by the hammer device and the scraping device is completed. By operating the drive mechanism 164, the container base 163 is driven so that the positions of the iron recovery container 162A and the aluminum recovery container 162B are switched. Thereby, when the material of the workpiece to be processed is switched, the recovery containers 162A and 162B can be switched reliably.

In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.
The present invention is not limited to the fiber laser processing machine of this embodiment, and can be applied to any laser processing machine. The present invention is not limited to a laser processing machine, and can be applied to a thermal cutting machine such as a plasma processing machine or a gas cutting machine.

1 Worker 10 Laser processing machine (thermal cutting machine)
20 Processing machine body (Thermal cutting machine body)
22 Control device (Main body control unit)
29 Dust collector 29a Dust collector side control unit 30 Cabin 31 Pallet (table)
32 Pallet drive mechanism 40 Laser processing head 60 Recovery conveyor W Workpiece

Claims (2)

A thermal cutting machine body that cuts an iron or aluminum workpiece placed on the table by heat generated from the processing head;
A dust collector that sucks dust generated in the thermal cutting machine body from the thermal cutting machine body and removes the dust from the air;
A thermal cutting machine having
The dust collector includes a cleaning unit that cleans the dust attached to the dust collector, and a dust collector side control unit that controls the cleaning unit,
The thermal cutting machine main body has an input means for inputting the material of the work to be cut, and when the material of the work inputted to the input means is different from the material of the work that has been cut last time, A main body side control unit for transmitting a signal,
The dust collector side control unit operates the cleaning means by the signal transmitted from the main body side control unit when the material of the work to be cut by the thermal cutting machine main body is switched. Cutting machine. The dust collector has an iron recovery container, an aluminum recovery container, a container base on which the iron recovery container and the aluminum recovery container are placed, and a driving means for driving the container base,
The dust collector side control unit is configured to transmit the signal transmitted from the main body side control unit when the material of the work to be cut by the thermal cutting machine main body is switched, and the driving unit upon completion of cleaning by the cleaning unit. The thermal cutting machine according to claim 1, wherein the container table is driven so that the positions of the iron recovery container and the aluminum recovery container are switched.

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