JP6014741B1 - Dust collector for processing machine and laser processing machine - Google Patents

Abstract

To provide a dust collector and a laser processing machine for a processing machine capable of separating and removing dust generated by processing an object without using a filter. The present invention relates to a dust collector for a processing machine provided in the middle of a duct that sucks and draws in smoke or dust generated from an object to be processed, and is provided in a cylindrical shape and sucks air A main body that generates a rotating airflow inside, a first capturing unit that is provided along the inner wall surface of the main body and captures smoke and dust separated from the air by the rotating airflow, and from the middle of the main body, And an exhaust pipe extending through the one end and extending to the outside. [Selection] Figure 1

Description

  The present invention relates to a dust collector and a laser processing machine used in a processing machine that processes an object using laser light, heat, a blade, and the like.

  When processing an object with a laser processing machine or the like, smoke and dust (hereinafter also referred to as “dust etc.”) are generated from the object along with the processing. Therefore, it is necessary to proceed while removing the dust and the like during the processing. Usually, in order to remove dust and the like, the generated dust and the like are sucked and the sucked air is passed through an air filter to capture the dust and the like.

  In Patent Document 1, air containing dust is taken in from a suction port provided on the side wall of the vortex chamber, and a swirl flow is generated in the vortex chamber to separate the dust, and is arranged at the central axis position of the vortex chamber. A dust collector that collects dust with a main filter is disclosed.

  In Patent Document 2, a cyclone type separation unit that swirls dust-containing air into dust and air, a shower unit that jets water toward the cyclone type separation unit, a waste liquid storage unit that stores waste liquid, Disclosed is a dust treatment apparatus comprising drain means for discharging waste liquid, filter means disposed in an inner cylinder of a cyclone separation means, and exhaust means for exhausting air filtered by the filter means. .

JP, 2015-120138, A Japanese Patent Laid-Open No. 2004-001118

  However, an air filter that filters dust or the like is easily clogged when the amount of generated dust or the like is large, or when viscous smoke is generated, and the suction force is likely to decrease. For this reason, the problem that the frequency of maintenance, such as filter replacement | exchange, becomes high arises.

  In recent years, in order to reduce the frequency of filter replacement, a method of filtering through an air flow containing dust or smoke using a bag-like filter (bag filter) made of cloth or nonwoven fabric has been used. In this method, the collection effect by the accumulated particles is greater than the collection by the filter itself. For this reason, when a certain time interval or pressure loss reaches a set value, it is necessary to remove the deposited particles. However, if highly viscous smoke or dust is attached, it cannot be removed sufficiently by the removal process.

  An object of the present invention is to provide a dust collector for a processing machine and a laser processing machine capable of separating and removing dust generated by processing of an object without using a filter.

  In order to solve the above problems, the present invention is a dust collector for a processing machine provided in the middle of a duct that sucks and draws in smoke or dust generated from an object to be processed, and is provided in a cylindrical shape. A main body that generates a rotating airflow inside by the sucked air, a first capturing unit that is provided along the inner wall surface of the main body and that captures smoke and dust separated from the air by the rotating airflow, and from the middle of the inside of the main body And an exhaust pipe extending through the one end of the main body to the outside.

  According to such a configuration, by sucking air into the main body, a rotating air flow is generated inside the main body, and smoke and dust contained in the air are centrifuged. Centrifugal separated smoke and dust are captured by a first capturing section provided along the inner wall surface of the main body. The air from which the smoke and dust have been removed is exhausted through an exhaust pipe extending in the middle or outside of the main body. That is, in the present invention, smoke and dust are separated by a centrifugal force by a rotating air current and captured by the first capturing unit using a force pressed against the inner wall surface side of the main body. Therefore, smoke and dust can be separated without using a filter that allows air to pass through, and the purified air can be discharged without pressure loss due to the filter.

  In the dust collector of the present invention, the first capturing part may have a cylindrical catcher arranged along the inner wall surface of the main body or a water film-like catcher formed on the inner wall surface of the main body by a rotating airflow. Good. Thereby, the smoke and dust centrifuged by the rotating air current can be captured by the cylindrical catcher or the water film catcher.

  The dust collector of the present invention may further include a nozzle for mixing a liquid into the air sucked into the main body. Thereby, the temperature of the air to attract | suck can be lowered | hung and the vaporized gas can be solidified. Moreover, since liquid can be mixed with dust to increase its mass, it is possible to perform centrifugal separation more effectively even with small dust.

  In the dust collector of the present invention, the liquid may contain at least one selected from VOC (Volatile Organic Compounds) deodorizing liquid, slightly acidic electrolyzed water, sodium hypochlorite water, and silver ion water. . Thereby, the odor generated by processing can be removed.

  In the dust collector of the present invention, the main body may include a straight body portion having a substantially constant inner diameter from the other end of the main body to at least halfway, and a lid detachably provided at the other end of the main body. Good. Thereby, the dust collection part inserted in the straight body part of the main body can be easily pulled out by opening the lid, or can be easily attached to the main body.

  The dust collector of the present invention may further include a second capturing portion provided on at least one of the inside and the outside of the exhaust pipe. Thereby, smoke and dust that could not be captured by the first capture unit can be captured by the second capture unit, and the purification performance of the air discharged from the exhaust pipe is enhanced.

  The dust collector of the present invention further includes a suction device provided at a subsequent stage of the exhaust pipe, a connection pipe connected between the exhaust pipe and the suction device, and a water supply unit for supplying water to the inside of the connection pipe. It may be. Thereby, the humidity of the air discharged | emitted from the exhaust pipe is raised, and the slight dust contained in air can be made to adhere to the connecting pipe before a suction device.

  The laser processing machine of the present invention includes a laser emitting head that emits laser light to be irradiated on an object, a duct that sucks and draws smoke and dust generated from the object, and the dust collector that is provided in the middle of the duct And.

  According to such a laser processing machine, smoke and dust generated during laser processing can be separated without using a filter that allows air to pass through, and the purified air can be discharged without pressure loss due to the filter. Can do.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to isolate | separate and remove the dust etc. which generate | occur | produced by the process of the target object, without using a filter.

It is a perspective view which shows the structural example of a laser beam machine. (A) And (b) is a figure which shows the detail of the dust collector which concerns on this embodiment. (A) And (b) is a figure which shows the detail of the dust collector which concerns on this embodiment. It is a schematic diagram illustrated about capture | acquisition of the dust etc. by a rotation airflow. It is a perspective view which illustrates a water film-like catcher. (A) And (b) is a schematic diagram which illustrates the nozzle which throws in a liquid. (A) And (b) is a schematic diagram which illustrates a 2nd capture part. (A) And (b) is a schematic diagram which illustrates a 2nd capture part. (A)-(c) is a schematic diagram which illustrates a 2nd capture part. It is a schematic diagram which illustrates a water supply part. It is sectional drawing which shows the example of a dust collection duct.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same members are denoted by the same reference numerals, and the description of the members once described is omitted as appropriate.

(Processing machine configuration)
FIG. 1 is a perspective view illustrating a configuration example of a processing machine.
The dust collector 1 according to the present embodiment captures dust or the like generated from the object W processed by the processing machine 100. A processing machine 100 shown in FIG. 1 is a laser processing machine. The laser processing machine is a device that performs processing such as cutting of the object W using the energy of laser light.

  The processing machine 100 includes a processing machine main body 110, a stage 120, a laser emission head 130, a dust collection nozzle 140, a moving unit 150, and the dust collector 1 according to the present embodiment. Switches 111 are arranged on the front surface of the processing machine main body 110, and a power supply unit, a control circuit, a negative pressure pump, and the like (not shown) are incorporated therein. In the vicinity of the processing machine main body 110, input / output devices such as a display 115, a keyboard 116, and a mouse 117 are arranged so that various processing conditions can be set, read, stored, and controlled by a processing program.

  The stage 120 is disposed on the processing machine main body 110 and is movable in one direction (for example, the Y-axis direction). An object W is placed on the stage 120. The object W is adsorbed and fixed on the stage 120 by, for example, negative pressure.

  The moving unit 150 is configured in a gate shape, for example, and is disposed above the stage 120. A laser emission head 130 is attached to the moving unit 150. The laser emission head 130 can be moved in one direction (for example, the X-axis direction) by the moving unit 150. In the present embodiment, the moving unit 150 moves the laser emission head 130 in the X-axis direction and the stage 120 in the Y-axis direction, so that the relative positional relationship between the laser beam and the object W along the XY axis is determined. Although set, any one of the moving unit 150 and the stage 120 may be configured to be movable along the XY axes.

  The laser emission head 130 collects the laser beam by an optical system (not shown) and irradiates the object W. In the present embodiment, the laser emission head 130 can scan the irradiation range of the laser light by changing the irradiation angle of the laser light with a scan mirror. The laser emission head 130 is, for example, a galvano scanner head. The processing object W is made of various materials such as metal, resin, paper, and wood.

  The dust collection nozzle 140 sucks and collects dust generated from the object W when performing laser processing. In the present embodiment, the dust collection nozzle 140 includes a truncated cone-shaped hood that is disposed above the object W and surrounds the irradiation range of the laser light emitted from the laser emission head 130. The dust collection nozzle 140 is provided with a suction duct 145 to suck up dust collected by the dust collection nozzle 140 through the suction duct 145.

  The dust collector 1 according to the present embodiment is provided in the middle of a duct (passage between sucking dust and the like and sending it to the discharge device) that sucks and draws dust and the like. The dust collector 1 includes a main body 10 provided in a cylindrical shape, a first capture unit 20 provided along an inner wall surface of the main body 10, and an exhaust pipe 30 extending outward from the inside of the main body 10. . In addition, in the dust collector 1 shown in FIG. 1, the state which removed the cover of the main body 10 is shown for convenience of explanation.

  In order to process the object W with the processing machine 100, first, the object W is placed on the stage 120 and fixed by suction or the like. Next, when a processing procedure is set and executed by a predetermined program, the laser beam is irradiated from the laser emitting head 130 onto the object W, and the object W is processed (cutting, grooving, marking, etc.) by the energy of the laser beam. Is given. The irradiation position of the laser beam is controlled by scanning of the laser beam and the operations of the stage 120 and the moving unit 150 by a program process.

  A suction device (not shown) is connected to the subsequent stage of the dust collector 1. During the processing by the processing machine 100, dust or the like is sucked by the negative pressure generated by the suction device. That is, dust or the like generated from the object W by processing is collected by the dust collection nozzle 140 by this suction force and sent to the dust collector 1 of the present embodiment via the suction duct 145. In the dust collector 1, the sucked dust and the like are captured by the first capturing unit 20, and the air from which dust or the like has been removed is discharged from the exhaust pipe 30 to the suction device via the exhaust duct 35.

(Details of dust collector)
Fig.2 (a)-FIG.3 (b) are the figures which show the detail of the dust collector which concerns on this embodiment.
FIG. 2A shows a perspective view of the dust collector 1 as viewed obliquely from above, and FIG. 2B shows a perspective view of the dust collector 1 as viewed from the side. FIG. 3A shows a perspective view of the dust collector 1 as viewed obliquely from the rear, and FIG. 3B shows a perspective view of the dust collector 1 with the lid removed.

  The main body 10 of the dust collector 1 is configured in a cylindrical shape, for example. The main body 10 may be polygonal. The main body 10 has a straight body portion 11 having a substantially constant inner diameter. A lid 12 is detachably provided at the open end 11b of the straight body 11 (the other end of the main body 10). An introduction part 13 is provided at the rear end 11a of the straight body part 11 opposite to the opening end 11b. A suction duct 145 is connected to the introduction pipe 131 of the introduction part 13. In the present embodiment, two suction ducts 145 extending from the dust collection nozzle 140 are connected to the introduction pipe 131 of the introduction unit 13.

  The introduction pipe 131 extends in the tangential direction of the inner wall surface of the cylindrical main body 10. Each of the two introduction pipes 131 is provided to extend in the opposite direction at a position shifted from each other by 180 ° around the inner wall surface.

  The air sucked from the suction duct 145 is sent from the introduction pipe 131 to the introduction portion 13 and is drawn into the main body 10 while rotating here. The air rotated by the introduction unit 13 becomes a rotating airflow that advances while turning along the inner wall surface of the main body 10.

  Inside the main body 10, a first capture unit 20 is provided along the inner wall surface. In the example shown in FIG. 3B, a cylindrical catcher 201 is used as the first capture unit 20. The cylindrical catcher 201 is a sponge or non-woven fabric configured in a cylindrical shape. The cylindrical catcher 201 includes a core material 201a for holding a sponge or a nonwoven fabric in a cylindrical shape. The core material 201a is, for example, a circular wire that matches the inner wall surface of the main body 10, and a plurality of core materials 201a are provided at a predetermined pitch.

  By providing such a cylindrical catcher 201 along the inner wall surface of the main body 10, dust or the like separated to the outside by centrifugal force due to the rotating airflow can be captured by the sponge or nonwoven fabric of the cylindrical catcher 201. .

  The exhaust pipe 30 extends from the middle of the main body 10 to the outside through one end of the main body 10. The cylindrical catcher 201 captures dust and the like, and the purified air is discharged to the outside through the exhaust pipe 30.

FIG. 4 is a schematic diagram illustrating the capture of dust and the like by the rotating airflow.
When air is drawn into the inside of the main body 10 from the introduction pipe 131 of the introduction portion 13, a rotating air current as shown by an arrow A is generated inside the main body 10. The dust contained in the air is centrifuged by this rotating airflow. The centrifuged dust and the like are captured by a cylindrical catcher 201 provided along the inner wall surface of the main body 10.

  That is, in the dust collector 1, a rotating airflow is generated inside the main body 10, and the dust or the like that is separated to the outside by the centrifugal force generated by the rotating airflow is pressed using the force that is pressed against the inner wall surface of the main body 10. Captured with the shape catcher 201. Then, as shown by an arrow B, the air from which dust or the like has been removed is discharged to the outside through the exhaust pipe 30 extending from the central portion to the outside in the middle of the main body 10.

  Thus, in the dust collector 1 which concerns on this embodiment, dust etc. can be isolate | separated without using the filter which allows air to pass through, and the purified air can be discharged | emitted without the pressure loss by a filter.

  Here, generally, in the cyclone type dust collector, the dust and the like that have been centrifuged are dropped downward along the inner wall surface. However, in the dust collector 1 which concerns on this embodiment, it captures with the 1st capture part 20 using the centrifugal force, making dust etc. centrifuge. For this reason, it is not necessary to arrange the main body 10 facing downward (the suction port of the exhaust pipe 30 is directed downward), and the main body 10 is horizontal or slightly upward (with the mouth of the exhaust pipe 30 facing upward). Dust collection is possible even if arranged. In addition, by arranging the main body 10 horizontally or upward in this manner, the rotating airflow can be brought into contact with the first capturing unit 20 for a long time as compared with the case where the main body 10 is arranged downward, such as dust. Capture efficiency increases.

  Moreover, in the dust collector 1, although the air resistance of a rotation airflow arises because the 1st capture part 20 is provided along the inner wall face of the main body 10, between the exhaust pipe 30 and the 1st capture part 20 is produced. It is possible to generate a rotating airflow by the flow of air. Unlike a normal cyclone type dust collector, the dust and the like that have been centrifuged are captured by the first capture unit 20 provided on the inner wall surface without dropping, so it is not necessary to keep the inner wall surface smooth. In addition, by making the shape of the core material 201a of the cylindrical catcher 201 into a circular shape matching the inner wall surface, air can easily rotate along the core material 201a, and the generation of a rotating airflow can be promoted.

  In addition, by disposing the main body 10 of the dust collector 1 almost horizontally, the lid 12 can be removed and the cylindrical catcher 201 can be easily taken out from the straight body portion 11 in the horizontal direction, thereby improving maintenance. Can be made.

  Moreover, the lid | cover 12 may be comprised with the material which has translucency. Thereby, even in the state where the lid 12 is closed, it becomes easy to grasp the situation inside the main body 10. Furthermore, illumination (LED or the like) may be provided inside the main body 10. It becomes easy to grasp the state of the first capture unit 20 provided inside the main body 10 by illumination. At this time, a part having translucency may be provided in a part of the main body 10 (for example, a part of the straight body part 11). As a result, the degree of contamination of the first capture unit 20 can be grasped by irradiating light from the illumination inside the main body 10 and leaking to the outside of the main body 10 via the first capture unit 20.

  Like the dust collector 1 according to the present embodiment, the first capture unit 20 is disposed along the inner wall surface corresponding to the outside of the rotating airflow inside the main body 10, thereby purifying the air while capturing dust and the like. Is discharged without pressure loss due to the filter. That is, even if dust or the like is captured by the first capturing unit 20, it does not affect the flow path of the purified air, so that a decrease in dust collection efficiency can be suppressed.

  In particular, depending on the material of the object W, dust or the like generated from the object W by processing may contain highly viscous smoke or dust. Even such dust can be captured firmly by the first capturing unit 20 and purified air can be guided to the exhaust pipe 30 regardless of clogging in the first capturing unit 20. Therefore, even if a filter of the suction device is provided downstream of the exhaust pipe 30 and the exhaust duct 35, it is possible to reduce the load caused by clogging of the filter and to increase the replacement frequency.

(Water film catcher)
FIG. 5 is a perspective view illustrating a water film catcher.
A water film catcher 202 may be used in place of the cylindrical catcher 201 as the first capturing unit 20 of the dust collector 1 according to the present embodiment. The water film catcher 202 is a liquid film formed on the inner wall surface by the rotating airflow inside the main body 10.

  In order to configure the water film-like catcher 202, a predetermined amount of liquid such as water is stored inside the main body 10, and suction is performed in this state to generate a rotating airflow. Thereby, the stored liquid spreads while rotating on the inner wall surface of the cylindrical main body 10 by the rotating airflow, and forms a liquid film. The liquid film (water film catcher 202) rotates and moves inside the main body 10 in accordance with the airflow.

  Thus, a liquid film is stretched inside the cylindrical main body 10, and dust and smoke having a high specific gravity are pressed against the liquid film and captured by the liquid. Since the liquid film stretched inside the cylindrical main body 10 gathers below the main body 10 when the suction is stopped, the liquid that has become dirty by absorbing dust or the like is more freely selected from the drain 42 provided below the main body 10. Can be discharged. Further, by using the discharge pump 42a, the liquid can be discharged even during operation.

  In addition, it is possible to continuously control the contamination of the liquid by supplying a new liquid from a spray nozzle or a liquid input port (not shown) as the liquid is discharged. Moreover, in the dust collector 1 using the water film-like catcher 202, when the air purified by the dust collecting action is discharged, moisture can be included in the air. Therefore, in this dust collector 1, the humidification effect can be obtained together with the dust collection effect.

(Liquid charging nozzle)
FIGS. 6A and 6B are schematic views illustrating nozzles for injecting liquid.
FIG. 6A shows a perspective view of the dust collector 1 as viewed from the rear side, and FIG. 6B shows a perspective view of the dust collector 1.
The nozzle 40 is attached to the introduction part 13 of the main body 10, for example. The nozzle 40 ejects the liquid, for example, in the form of a mist. When the liquid is supplied from the nozzle 40, the liquid is mixed into the air sucked into the main body 10. The nozzle 40 is desirably provided at a position where liquid can be mixed before the air is sucked into the main body 10. For example, the nozzle 40 is disposed at a position where the liquid can be mixed immediately after the introduction pipe 131 in the introduction unit 13 or at the stage before the rotating air current is generated inside the main body 10, such as the connection part of the suction duct 145 of the dust collection nozzle 140. Is done.

  In this way, the liquid is mixed into the sucked air and is taken into the main body 10 to generate a rotating air current, thereby lowering the temperature of the air and increasing the humidity and increasing the mass of the dust mixed with the liquid. Can do. Thereby, even if it is a small dust etc., it comes to be able to perform centrifugation more effectively. If liquid accumulates inside the main body 10, it may be discharged from the drain 42.

  Here, the liquid supplied from the nozzle 40 may include at least one selected from VOC deodorant liquid, slightly acidic electrolyzed water, sodium hypochlorite water, and silver ion water in addition to water. . Thereby, the odor generated by processing can be removed.

  Note that when the liquid is supplied from the nozzle 40, the cylindrical catcher 201 or the water film catcher 202 may be used as the first capturing unit 20. When the cylindrical catcher 201 is used, dust or the like whose mass is increased by moisture can be efficiently captured. Further, when the water film catcher 202 is used, the liquid introduced from the nozzle 40 may be used as the water film catcher 202.

(Second capture part)
FIG. 7A to FIG. 9C are schematic views illustrating the second capture unit.
FIGS. 7A to 8A are schematic views as seen from the front of the main body 10 with the lid 12 opened. In FIG.8 (b), the perspective view of the 2nd capture part 60 is represented. 9A to 9C, front views of the exhaust pipe 30 and the second capture unit 60 are represented.
In the dust collector 1 according to the present embodiment, the second capture unit 60 may be provided in the exhaust pipe 30.

  In the example illustrated in FIG. 7A, the second capture unit 60 is provided along the inside (inner wall surface) of the exhaust pipe 30. The second capture unit 60 is an inner cylindrical catcher 601. The inner cylindrical catcher 601 is a cylindrical sponge or nonwoven fabric disposed along the inner wall surface of the exhaust pipe 30. By providing the inner cylinder type catcher 601 inside the exhaust pipe 30, the inner cylinder type is formed when air that cannot be captured by the first capture unit 20 and is slightly contained in dust or the like is sucked into the exhaust pipe 30. The catcher 601 can capture dust contained in the air.

  In the example illustrated in FIG. 7B, the second capture unit 60 is provided along the outside (outer wall surface) of the exhaust pipe 30. The second capture unit 60 is an outer cylindrical catcher 602. The outer cylinder type catcher 602 is a cylindrical sponge or non-woven fabric disposed along the outer wall surface of the exhaust pipe 30. Due to the rotating airflow generated inside the main body 10, relatively heavy dust or the like is captured by the first capturing unit 20 outside the rotating airflow. On the other hand, relatively light dust that has not been captured by the first capturing unit 20 is captured by the second capturing unit 60 inside the rotating airflow.

  In addition, as the 2nd capture part 60, you may provide both the inner cylinder type catcher 601 and the outer cylinder type catcher 602.

  In the example shown in FIG. 8A, a radial catcher 603 is provided as the second capture unit 60 provided inside the exhaust pipe 30. The radial catcher 603 includes a plurality of catcher portions 603 a extending radially from the central portion of the exhaust pipe 30. In the example shown in FIG. 8A, as an example, eight catcher portions 603a are provided at intervals of 45 degrees. The air sucked into the exhaust pipe 30 is discharged through a gap between adjacent catcher portions 603a. At this time, dust or the like contained in the air can be captured by the air coming into contact with the catcher portion 603a.

  As illustrated in FIG. 8B, the second capturing unit 60 may have a configuration in which a plurality of radial catchers 603 are stacked. At this time, the plurality of radial catchers 603 may be overlapped while being rotated little by little around the central axis. For example, when the rotation direction of the rotating airflow of the main body 10 is clockwise when viewed from the front, the radial catcher 603 is overlapped while slightly rotating clockwise from the suction port side of the exhaust pipe 30 to the back. The rotation angle is set to be equal to or smaller than the angle corresponding to the thickness of the catcher portion 603a.

  Thereby, the wall twisted by the some catcher part 603a is comprised in the superimposition direction, and the rotation of the same direction as the rotation airflow of the main body 10 is added to the air which passes the some radiation type catcher 603. FIG. The rotation air in the exhaust pipe 30 also stabilizes the rotating airflow of the main body 10. Therefore, air is efficiently sucked into the exhaust pipe 30 from the main body 10, and dust or the like contained in the air is captured when contacting the catcher portion 603a.

  In the example shown in FIG. 9A, a honeycomb type catcher 604 is provided as the second capturing part 60 provided inside the exhaust pipe 30. The size and number of honeycombs of the honeycomb type catcher 604 are set so that the pressure loss of the air sucked into the exhaust pipe 30 does not substantially increase depending on the amount of trapped dust or the like.

  In the example shown in FIG. 9B, a concentric catcher 605 is provided as the second capture unit 60 provided inside the exhaust pipe 30. With the concentric catcher 605, it is possible to make it difficult to prevent the air flow in the center.

  In the example shown in FIG. 9C, a spiral catcher 606 is provided as the second capture unit 60 provided inside the exhaust pipe 30. The spiral catcher 606 does not require radial struts, making it difficult to block air flow. The spiral catcher 606 may have a shape extending in the axial direction from the outside to the inside.

  In the second trapping portion 60 provided inside the exhaust pipe 30 such as the inner cylindrical catcher 601, the radial catcher 603, the honeycomb catcher 604, the concentric catcher 605, and the spiral catcher 606, It is not a filter-like filter with a mesh that covers the flow path, but a large flow path.

Here, the air volume in the exhaust pipe 30 is 25 m ³ / min at the maximum, the wind speed is 50 m / sec at the calculated value, and the differential pressure between the operating main body 10 and the atmospheric pressure is about 500 Pa to 1000 Pa. Therefore, it is desirable that the pressure loss of the second capture unit 60 provided inside the exhaust pipe 30 is set within 50 Pa.

  In general, the pressure loss of the filter covered by the exhaust pipe 30 increases in proportion to the increase in the air volume. On the other hand, unlike the filter, the second capturing unit 60 in the present embodiment has a very small change in pressure loss even if the air volume changes. Further, the pressure loss of the filter increases as the dust holding capacity increases, but the pressure loss of the second capturing unit 60 in the present embodiment does not substantially change even if the dust trapping amount increases.

  In the dust collector 1 according to the present embodiment, dust or the like is captured by the first capturing unit 20 using centrifugal force in a rotating airflow generated inside the main body 10. The second capturing unit 60 can capture dust or the like that could not be captured by the first capturing unit 20 in the vicinity of the suction port of the exhaust pipe 30. Therefore, it is desirable that the second capture unit 60 be provided from the vicinity of the suction port of the exhaust pipe 30 to at least the middle of the exhaust pipe 30.

  Moreover, you may make it change the coarseness of the sponge or nonwoven fabric in the 2nd capture part 60 with the coarseness of the sponge or nonwoven fabric in the 1st capture part 20 (tubular catcher 201). That is, the first capturing unit 20 can easily capture relatively heavy dust and the second capturing unit 60 can easily capture relatively light dust and the like. Therefore, the coarseness of the second capturing part 60 may be finer than the coarseness of the first capturing part 20. Similarly, you may make it change the material of the 2nd capture part 60 with the material of the 1st capture part 20 (tubular catcher 201).

(Water supply department)
FIG. 10 is a schematic view illustrating a water supply unit.
In the dust collector 1 according to the present embodiment, a water supply unit 50 may be provided between the exhaust pipe 30 and the suction device 200. An exhaust duct 35 is connected to the exhaust pipe 30, and a suction device 200 is provided at the end. The suction device 200 includes a suction device main body 210, a filter unit 220, and a suction pump 230. The exhaust duct 35 is connected between the exhaust pipe 30 and a connection port 215 provided in the filter unit 220 of the suction device 200.

  The water supply part 50 is provided in the middle of the exhaust duct 35, for example. The water supply unit 50 has a function of supplying water into the exhaust duct 35. Here, the water supply includes supplying a liquid containing at least one selected from VOC deodorant liquid, slightly acidic electrolyzed water, sodium hypochlorite water and silver ion water in addition to water. The supply includes spraying and water discharge. By supplying water into the exhaust duct 35 from the water supply unit 50, the humidity of the air passing through the exhaust duct 35 is increased, and a slight amount of dust contained in the air is attached to the inner wall of the exhaust duct 35 in front of the suction device 200. Can do. As a result, the exhaust duct 35 itself serves as a filter, reducing the load caused by clogging of the filter unit 220 provided in the suction device 200, and increasing the frequency of cleaning and replacement of the filter unit 220. Become.

  A discharge drain (not shown) may be provided in the middle of the exhaust duct 35. Water or liquid supplied from the water supply unit 50 may be stored in the exhaust duct 35, and the accumulated water or liquid may be periodically discharged from the discharge drain.

(Dust collecting nozzle)
FIG. 11 is a cross-sectional view illustrating an example of a dust collection nozzle.
The inventor of the present application has created a dust collection nozzle 140 shown in FIG. 8 and has reached a patent (Japanese Patent No. 5729739).

  That is, the dust collection nozzle 140 has a rotationally symmetric shape that can surround the laser beam emitted from the laser emission head 130. The dust collection nozzle 140 surrounds a conical space 23 necessary for forming the laser light scanning area 21.

  A gap 31 is provided between the lower edge 29 of the dust collection nozzle 140 and the object W, and ambient air is supplied into the dust collection nozzle 140. In addition, a compressed air supply port 33 is connected to the lower end of the dust collection nozzle 140, and the compressed air is supplied into the dust collection nozzle 140, thereby causing a swirling flow in the dust collection nozzle 140.

  A suction duct 145 is connected to the skirt portion 25 of the dust collection nozzle 140. The suction duct 145 is connected in a tangential direction in the horizontal cross section of the skirt portion 25, and exhausts by the negative pressure of a suction pump communicating with a bellows tube (not shown). As a result, a swirl flow 36 is generated in the dust collection nozzle 140.

  According to this dust collection nozzle 140, the air 41 supplied into the dust collection nozzle 140 from the gap 31 provided between the lower edge 29 of the dust collection nozzle 140 and the object W, and the dust collection nozzle 140 The air supplied into the dust collection nozzle 140 from the compressed air supply port 33 at the lower end almost entrains the air in the vicinity of the laser processing site, becomes an upward flow, and swirls along the rotationally symmetric shape of the dust collection nozzle 140. 36, and is exhausted through the suction duct 145 in the tangential direction of the rotationally symmetric shape. Further, the air 45 supplied from the gap 32 between the upper edge of the elevating unit 27 and the laser emitting head 130 becomes a downward flow, joins the swirling flow 36, and is exhausted through the suction duct 145.

  By using such a dust collection nozzle 140, dust and the like during processing in the processing machine 100 can be sucked efficiently. When the dust collection nozzle 140 having such a high suction efficiency is used, a filter with a normal filter causes clogging of the filter in a short time. Therefore, by applying the dust collector 1 according to the present embodiment, effective dust collection can be realized without causing clogging from efficient suction of dust and the like.

  As described above, according to the dust collector 1 according to the embodiment, it is possible to separate and remove dust generated by processing the object W without using a filter.

  In addition, although this embodiment and its specific example were demonstrated above, this invention is not limited to these examples. For example, the laser emission head 130 may be provided in a multi-joint arm in addition to the case in which the laser emission head 130 is provided in the moving unit 150 that moves in one axis direction. Further, those in which those skilled in the art appropriately added, deleted, and changed the design of the above-described embodiments or specific examples thereof, and combinations of the features of each embodiment as appropriate are also included in the present invention. As long as the gist is provided, it is included in the scope of the present invention.

  As described above, the dust collecting apparatus 1 of the present invention includes a processing machine 100 other than a laser processing machine, for example, a laser welding machine, a heating device using laser or energy other than laser, a cutting device using a blade, and a three-dimensional modeling device. The present invention can be suitably used for a processing machine 100 that generates smoke or dust during processing, such as a (3D printer). Moreover, the structure of the dust collector 1 using the water film-like catcher 202 shown to Fig.6 (a) and (b) can be utilized also as household dust collection (air cleaning) and a humidifier. At this time, the main body 10 is made of a translucent material, and the rotating water film catcher 202 is illuminated with illumination such as LEDs, so that it can also be used as a glowing air cleaning humidifier.

DESCRIPTION OF SYMBOLS 1 ... Dust collector 10 ... Main body 11 ... Straight trunk | drum 11a ... Rear end 11b ... Open end 12 ... Cover 13 ... Introduction part 20 ... 1st capture part 21 ... Scanning area 23 ... Space 25 ... Skirt part 27 ... Lifting part 29 ... Lower edge 30 ... Exhaust pipe 31 ... Gap 32 ... Gap 33 ... Compressed air supply port 35 ... Exhaust duct 36 ... Swirl flow 40 ... Nozzle 41 ... Air 42 ... Drain 45 ... Air 50 ... Water supply part 60 ... Second capture part 100 ... Processing machine 110 ... Processing machine body 115 ... Display 116 ... Keyboard 117 ... Mouse 120 ... Stage 130 ... Laser emission head 131 ... Introducing pipe 140 ... Dust collecting nozzle 145 ... Suction duct 150 ... Moving unit 200 ... Suction device 201 ... Cylindrical shape Catcher 202 ... Water film catcher 210 ... Suction device body 215 ... Connection port 220 ... Filter unit 230 ... Suction pump 601 ... Inner cylinder type catcher 02 ... outer tubular catcher 603 ... emission catcher 603a ... catcher 604 ... honeycomb catcher 605 ... concentric catcher 606 ... spiral catcher W ... object

Claims (8)

A dust collector for a processing machine provided in the middle of a duct that sucks and draws in smoke or dust generated from an object to be processed,
A main body that is provided in a cylindrical shape and generates a rotating airflow inside by sucked air;
A first capturing section that is provided along an inner wall surface of the main body and captures the smoke and dust separated from the air by the rotating airflow;
From the middle of the inside of the main body, an exhaust pipe extending through the one end of the main body to the outside,
Equipped with a,
The dust collecting apparatus for a processing machine, wherein the first capturing unit includes a water film-like catcher formed on an inner wall surface of the main body by the rotating airflow . A dust collector for a processing machine provided in the middle of a duct that sucks and draws in smoke or dust generated from an object to be processed,
A main body that is provided in a cylindrical shape and generates a rotating airflow inside by sucked air;
A first capturing section that is provided along an inner wall surface of the main body and captures the smoke and dust separated from the air by the rotating airflow;
From the middle of the inside of the main body, an exhaust pipe extending through the one end of the main body to the outside,
With
The body is
A straight body having a substantially constant inner diameter from the other end of the main body to at least halfway;
A lid detachably provided at the other end of the main body;
A dust collector for a processing machine, comprising: 3. The dust collector for a processing machine according to claim 1, wherein the first capturing unit includes a cylindrical catcher disposed along an inner wall surface of the main body.   The dust collector for a processing machine according to any one of claims 1 to 3, further comprising a nozzle for mixing a liquid into the air sucked into the main body. The liquid, volatile organic compounds (VOC: Volatile Organic Compounds) deodorant liquid, slightly acidic electrolyzed water, containing at least one selected from among sodium hypochlorite water and silver ion water, according to claim 4, wherein Dust collector for processing machines. The dust collector for a processing machine according to any one of claims 1 to 5 , further comprising a second capturing portion provided on at least one of the inside and the outside of the exhaust pipe. A suction device provided downstream of the exhaust pipe;
A connecting pipe connected between the exhaust pipe and the suction device;
The dust collector for a processing machine according to any one of claims 1 to 6 , further comprising a water supply unit configured to supply water into the connection pipe. A laser emission head for emitting laser light to be irradiated on the object;
A duct for sucking and drawing in smoke or dust generated from the object;
The dust collector according to any one of claims 1 to 7 , provided in the middle of the duct;
A laser processing machine comprising: