Dust collection system and dust collection method

Abstract

The present invention provides a dust collection system that can efficiently collect harmful substances generated during work. [Solution] The dust collection system in this embodiment includes a dust collector for collecting welding fumes generated by welding work, a moving mechanism for moving the hood of the dust collector that sucks up the welding fumes, and a control device for controlling the moving mechanism. The control device has a moving instruction unit that outputs an instruction to the moving mechanism to move the hood to a predetermined position. The work area where welding work is performed is physically isolated, and the moving instruction unit outputs an instruction from outside the work area by operation of the worker, and the hood moved by the moving mechanism collects the welding fumes generated by the welding work.

Description

Technical Field

[0001] The present invention relates to a dust collection system and a dust collection method.

Background Art

[0002] For example, Patent Document 1 discloses a welding fume collector including sensors for detecting physical quantities such as light, temperature, sound, and fumes, and having a suction port for welding fumes that can automatically track a welding part using the physical quantities detected by the sensors as a medium.

[0003] Also, Patent Document 2 discloses a method for collecting welding fumes, which comprises receiving light generated by welding with a plurality of optical sensors, discriminating an optical sensor that receives the welding light most strongly among these optical sensors, and controlling a drive mechanism based on this discrimination result to move a suction duct with a hood of a dust collector to a light source.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to efficiently collect harmful substances generated by work.

Means for Solving the Problems

[0006] The dust collection system according to the present invention comprises a dust collector for collecting welding fumes generated by welding work, a moving mechanism for moving the hood of the dust collector for sucking in the welding fumes, and a control device for controlling the moving mechanism. The control device has a moving instruction unit that outputs an instruction to the moving mechanism to move the hood to a predetermined position. The work area where the welding work is performed is physically isolated. The moving instruction unit outputs an instruction on the condition that it receives input from an operator from outside the work area. The dust collector collects welding fumes generated by the welding work from the hood moved by the moving mechanism.

[0007] Preferably, the system further includes a transport device for transporting the object to be welded to a predetermined location, wherein the transport device moves horizontally within the work area, and the moving mechanism moves the hood so as to move it out of the trajectory of the transport device.

[0008] Preferably, the moving mechanism has an arm that fixes the hood to its tip and a pivot axis that is the axis of rotation of the arm, the hood is rotated by the arm that rotates around the pivot axis, the transport equipment places the transported object on a platform on which the object is placed, and the moving mechanism rotates the hood so that it is positioned above the object placed by the transport equipment.

[0009] Preferably, the control device further includes a retraction instruction unit that outputs an instruction to retract the hood that has moved onto the object, based on the instruction of the movement instruction unit, and the movement mechanism retracts the hood so that it is removed from the track of the transport equipment, based on the instruction of the retraction instruction unit.

[0010] The dust collection method according to the present invention comprises: a transport step in which a transport device transports an object to be welded to a predetermined location; an isolation step in which an operator physically isolates a work area in which welding work is performed on the object; an input step in which the operator performs an input operation from outside the work area isolated in the isolation step to a control device that controls a movement mechanism for moving the hood of a dust collector; a movement instruction step in which the control device outputs an instruction to move the hood of a dust collector that sucks up welding fumes to a predetermined location; a movement step in which the movement mechanism moves the hood to the predetermined location in accordance with the instruction in the movement instruction step; and a dust collection step in which the dust collector collects welding fumes generated by welding work on the object transported by the transport device from the hood that has been moved in the movement step.

[0011] Preferably, the control device further includes a retraction instruction step in which the operator outputs an instruction to retract the moved hood, and a retraction step in which the moving mechanism retracts the hood in accordance with the instruction in the retraction instruction step, wherein in the retraction step, the moving mechanism retracts the hood to a position away from the track of the transport equipment.

[0012] The dust collection system according to the present invention comprises a dust collector for collecting dust generated by polishing work, a moving mechanism for moving the hood of the dust collector for sucking up dust, and a control device for controlling the moving mechanism. The control device has a moving instruction unit that outputs an instruction to the moving mechanism to move the hood to a predetermined position. The work area where the polishing work is performed is physically isolated. The moving instruction unit outputs an instruction on the condition that it receives input from an operator from outside the work area. The dust collector collects dust generated by the polishing work from the hood moved by the moving mechanism.

[0013] The dust collection method according to the present invention comprises: a transport step in which a transport device transports an object to be polished to a predetermined position; an isolation step in which an operator physically isolates a work area in which polishing work is performed on the object; an input step in which the operator performs an input operation from outside the work area isolated in the isolation step to a control device that controls a movement mechanism for moving the hood of a dust collector; a movement instruction step in which the control device outputs an instruction to move the hood of a dust collector that sucks up dust to a predetermined position; a movement step in which the movement mechanism moves the hood to the predetermined position in accordance with the instruction in the movement instruction step; and a dust collection step in which the dust collector collects dust generated by the polishing work on the object transported by the transport device from the hood that was moved in the movement step. [Effects of the Invention]

[0014] According to the present invention, harmful substances generated during work can be efficiently collected as dust. [Brief explanation of the drawing]

[0015] [Figure 1] This figure illustrates the overall configuration of the dust collection system 1 in the first embodiment. [Figure 2] This figure illustrates the crane 5, hood 34, and track in the first embodiment. [Figure 3] This figure illustrates the hardware configuration of the control device 9 in the first embodiment. [Figure 4] This figure illustrates the functional configuration of the control device 9 in the first embodiment. [Figure 5] This is a flowchart illustrating the dust collection process (S10) by the dust collection system 1 in the first embodiment. [Figure 6] This figure illustrates the overall configuration of the dust collection system 1 in the second embodiment. [Figure 7] This is a flowchart illustrating the dust collection process (S20) by the dust collection system 1 in the second embodiment. [Figure 8]It is a diagram for explaining the dust collection system 1 in a modified example.

Embodiments for Carrying out the Invention

[0016] First, the background of the present invention will be explained. In welding work, for transporting an object to a welding workbench, a transporting device such as a crane is used. Generally, a crane has an arm and a lifting tool for lowering the lifted object, and the arm moves horizontally or rotates, and the lifting tool moves up and down to transport the object to the position where the welding work is to be performed. Also, in welding work, a dust collector for sucking welding fumes, which are harmful fumes and dust generated by the welding work of the object, is arranged. Specifically, the dust collector is installed such that the hood (dust collection suction port) of the dust collector is arranged near the work place. However, since the arm and the lifting tool of the crane operate, they may come into contact with the dust collector, or the hood of the dust collector may interfere with the movement of the crane, which may hinder the operation of the crane and prevent the work flow from proceeding smoothly. Therefore, the dust collection system in the present invention moves the dust collector to prevent interference with the crane and realizes efficient welding work.

[0017] Hereinafter, embodiments according to the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the illustrated examples. [First Embodiment] FIG. 1 is a diagram illustrating the overall configuration of the dust collection system 1. FIG. 2 is a diagram illustrating the trajectories of the crane 5 and the hood 34. As illustrated in FIG. 1, the dust collection system 1 has a dust collector 3 and a crane 5. The dust collector 3 includes a dust collector main body 30, a duct 32, a hood 34, and a moving mechanism 36. The dust collector main body 30 collects the welding fumes sucked from the hood 34 and discharges clean air from which contaminants have been removed by a filter. Examples of hazardous substances according to the present invention include welding fumes and dust. The duct 32 carries welding fumes sucked in from the hood 34 to the dust collector body 30. The duct 32 is equipped with a flexible duct 320, at least in part, which is bellows-shaped. The flexible duct 320 follows the hood 34 located at the end of the duct 32 by bending. The hood 34 is attached to the end of the duct 32 and includes a suction port 340 for drawing in welding fumes and a cover 342 that covers the suction port. The cover 342 is frustoconical in shape. The cover 342 widens from the upper circle of the frustoconical that covers the suction port 340 to the tip of the cover 342, i.e., the lower circle of the frustoconical. As illustrated in Figure 2, the hood 34 is circular when viewed from above over the work area, and its diameter is at least large enough to cover the mounting base 11.

[0018] The moving mechanism 36 moves the hood 34 of the dust collector 3. Specifically, the moving mechanism 36 comprises an arm 360, a rotating shaft 362, a drive unit 364, a column 366, an operation panel 8, and a control device 9. The arm 360 fixes the hood 34 to its tip and moves the hood 34. The arm 360 may be directly attached to the hood 34, or it may support a duct 32 connected to the hood 34 and move the hood 34. The rotating shaft 362 is the axis of rotation of the arm 360. Specifically, the rotating shaft 362 is attached to the column 366 that supports the duct 32, and the arm 360 rotates horizontally around the rotating shaft 362, bending the flexible duct 320 and moving the hood 34. The drive unit 364 is the power source that moves the arm 360, and is, for example, an electric motor. The drive unit 364 operates according to the instructions of the control device 9. The control panel 8 is an input device for inputting instructions to the control device 9, and includes a movement instruction button for inputting instructions to move the hood 34 in order to perform welding work, and a retraction instruction button for inputting instructions to retract the hood 34 when welding work is completed.

[0019] The control device 9 receives input to the control panel 8 and controls the moving mechanism 36. Specifically, the control device 9 controls the drive unit 364 of the moving mechanism 36 to move the arm 360 to a preset position. For example, the control device 9 is a PLC (Programmable Logic Controller). As illustrated in Figure 2, the welding work area A is a partitioned area separated by a partition 17, and the work area A is isolated by a door 170 provided in the partition 17. The partition 17 does not allow welding fumes to pass through and prevents the diffusion of welding fumes from the work area A separated by the partition 17. Specifically, the duct 32 and hood 34 of the dust collector 3, the mounting platform 11, the moving mechanism 36, and the welding robot 13 are located within the work area A. The upper part of the work area A separated by the partition 17 is open. The partition 17 prevents welding fumes from spreading outside the work area, and welding fumes rising within the work area A are sucked in by the hood 34 of the dust collector 3.

[0020] Crane 5 is a transport device that moves the object to be welded to a predetermined location. Crane 5 includes an overhead crane 50 and a jib crane 70. The overhead crane 50 comprises a crane body 52 and support columns 54 that support the crane body 52. ​​The crane body 52 includes a lifting device 520 for hanging an object and a hoisting machine 522 for raising and lowering the object hung on the lifting device 520. The overhead crane 50 moves horizontally along a running rail 56 installed on the ceiling of the work area A. Specifically, the running rail 56 consists of two parallel rails, and the support columns 54, which are suspended perpendicular to the running rails between the running rails 56, move horizontally, causing the object lifted by the lifting device 520 to move horizontally. The trajectory of the overhead crane 50 includes a trajectory for horizontal movement along the running rail 56 and a trajectory for raising and lowering the lifting device 520.

[0021] The jib crane 70 comprises a crane body 72, an arm 74 supporting the crane body 72, and a shaft 76. The crane body 72 includes a lifting device 720 for hanging an object and a hoisting machine 722 for raising and lowering the object hung on the lifting device 720. The jib crane 70 rotates as the arm 74 rotates around the shaft 76, causing the crane body 72, which is supported by the arm 74, to pivot. The trajectory of the jib crane 70 includes the trajectory of the arm 74 rotating around the shaft 76 and the trajectory of the lifting and lowering of the lifting device 720.

[0022] Figure 3 is a diagram illustrating the hardware configuration of the control device 9. As illustrated in Figure 3, the control device 9 includes a CPU 900, memory 902, power supply module 904, network interface 906 (network IF906), display device 908, and input device 910, and these components are connected to each other via a bus 912. The CPU900 is, for example, the central processing unit. Memory 902 is, for example, volatile memory and functions as main memory, storing the control program 90 and other control data. The power supply module 904 supplies the necessary power to the modules within the control unit 9. The network IF906 is an interface for wired or wireless communication, and for example, it enables communication with the drive unit 364. The display device 908 is, for example, a liquid crystal display. The input device 910 is, for example, a keyboard and a mouse.

[0023] Figure 4 is a diagram illustrating the functional configuration of the control device 9. As illustrated in Figure 4, the control device 9 in this example has a control program 90 installed. The control program 90 includes an operation detection unit 950, a movement instruction unit 952, and a retraction instruction unit 954. In the control program 90, the operation detection unit 950 detects the operator's operation of the control panel 8. Specifically, the operation detection unit 950 detects the pressing of the "move instruction button" to move the hood 34 of the dust collector 3 for dust collection, and the pressing of the "retraction instruction button" to retract the hood 34 of the dust collector 3 after the welding work is completed. The operation detection unit 950 notifies the move instruction unit 952 or the retraction instruction unit 954 of the detection result. The movement instruction unit 952 outputs an instruction to move the hood 34 to a predetermined position. Specifically, the movement instruction unit 952 controls the drive unit 364 according to the parameters stored in the parameter storage unit 600 for moving the hood 34 of the dust collector 3 onto the mounting base 11.

[0024] The retraction instruction unit 954 outputs an instruction to retract the hood that has moved to a predetermined position. Specifically, the retraction instruction unit 954 controls the drive unit 364 according to the parameters for retracting the hood 34 that has moved onto the mounting base 11. The parameter storage unit 600 manages parameters that determine the operation of the hood 34 of the dust collector 3. Specifically, the parameter storage unit 600 manages parameters for controlling the moving mechanism 36 so that the hood 34 of the dust collector 3 does not interfere with the trajectory of the overhead crane 50, the jib crane 70, or both. More specifically, the parameter storage unit 600 manages the operation of the moving mechanism 36 when moving the hood 34 of the dust collector 3 onto the mounting base 11, and the operation of the moving mechanism 36 when retracting the hood 34 after it has moved onto the mounting base 11. Even more specifically, the parameter storage unit 600 manages the rotation speed of the motor, the rotation direction of the hood 34, and the stopping position of the hood 34.

[0025] Figure 5 is a flowchart illustrating the dust collection process (S10) by the dust collection system 1. As illustrated in Figure 5, in step 100 (S100), the overhead crane 50 moves horizontally along the travel rail 56, and the object suspended by the lifting device 520 is lowered onto the mounting platform 11 by the hoisting machine 522 of the overhead crane 50 and placed thereon. Alternatively, the jib crane 70 has an arm 74 that rotates around the axis 76, and the object suspended by the lifting device 720 is lowered onto the mounting platform 11 by the hoisting machine 722 of the jib crane 70 and placed thereon. In step 105 (S105), the worker exits work area A, closes the door 170 of work area A, and isolates work area A. In step 110 (S110), the worker presses the "move instruction button" on the control panel 8 from outside the work area.

[0026] In step 115 (S115), the operation detection unit 950 of the control device 9 detects that the move instruction button on the control panel 8 has been pressed. The move instruction unit 952 moves the hood 34 using the move mechanism 36. Specifically, the arm 360 of the move mechanism 36 rotates around a pivot axis 362 attached along the column 366, and the hood 34 also pivots around the pivot axis 362 in the same way as the arm 360. The move mechanism 36 moves the hood 34 so that the suction port of the hood 34 is positioned approximately directly above the mounting base 11. In step 120 (S120), the welding robot 13 starts the welding operation. The dust collector 3 collects the welding fumes generated by the welding operation with the hood 34, sucks them in through the intake port, and sends them to the dust collector body 30 through the duct 34. In step 125 (S125), after the welding work is completed, the operator presses the retraction instruction button on the control panel 8. In step 130 (S130), the operation detection unit 950 of the control device 9 detects that the retraction instruction button on the control panel 8 has been pressed. The retraction instruction unit 954 of the control device 9 moves the hood 34 from its position approximately directly above the mounting platform 11 so that it is off the track of the crane 5.

[0027] As described above, with the dust collection system 1 in this embodiment, the dust collector hood 34 is moved to a position that does not interfere with the crane 5, so the operation of the crane 5 is not obstructed. Furthermore, with the dust collection system 1, since the control panel 8 is located outside the work area, welding work will not start while a worker is inside the work area, thus ensuring the safety of the worker.

[0028] [Second Embodiment] Next, a second embodiment will be described. In the second embodiment, elements having substantially the same function and configuration as those in the above embodiment are denoted by the same reference numerals, thus omitting redundant explanations. In the second embodiment, we will describe a case in which the dust collection system 1 collects dust generated by polishing work. Specifically, in the first embodiment, we described a case in which the dust collection system 1 collects welding fumes generated by welding work performed by welding robot 13, but in the second embodiment, we will describe a case in which the polishing robot 19 collects dust generated by polishing work.

[0029] Figure 6 is a diagram illustrating the overall configuration of the dust collection system 1 in the second embodiment. As illustrated in Figure 6, the dust collection system 1 includes a dust collector 3 and a crane 5. The dust collector 3 comprises a dust collector body 30, a duct 32, a hood 34, and a moving mechanism 36. In the second embodiment, the dust collector body 30 collects dust sucked in from the hood 34 and discharges clean air from which contaminants have been removed by a filter. Specifically, the duct 32 carries the dust sucked in from the hood 34 to the dust collector body 30. The hood 34 is attached to the end of the duct 32 and includes a suction port 340 for sucking in dust and a cover 342 that covers the suction port.

[0030] Figure 7 is a flowchart illustrating the dust collection process (S20) by the dust collection system 1 in the second embodiment. As illustrated in Figure 7, in step 200 (S200), the overhead crane 50 moves horizontally along the travel rail 56, and the object suspended by the lifting device 520 is lowered onto the mounting platform 11 by the hoisting machine 522 of the overhead crane 50 and placed thereon. Alternatively, the jib crane 70 has an arm 74 that rotates around the axis 76, and the object suspended by the lifting device 720 is lowered onto the mounting platform 11 by the hoisting machine 722 of the jib crane 70 and placed thereon. In step 205 (S205), the worker exits work area A (see Figure 2), closes the door 170 of work area A, and isolates work area A. In step 210 (S210), the worker presses the "move instruction button" on the control panel 8 from outside the work area.

[0031] In step 215 (S215), the operation detection unit 950 of the control device 9 detects that the move instruction button on the control panel 8 has been pressed. The move instruction unit 952 moves the hood 34 using the move mechanism 36. Specifically, the arm 360 of the move mechanism 36 rotates around a pivot axis 362 attached along the column 366, and the hood 34 also pivots around the pivot axis 362 in the same way as the arm 360. The move mechanism 36 moves the hood 34 so that the suction port of the hood 34 is positioned approximately directly above the mounting base 11. In step 220 (S220), the polishing operation is started by the polishing robot 19 as illustrated in Figure 6. The dust collector 3 collects the dust generated by the polishing operation with the hood 34, sucks it in through the intake port, and sends it to the dust collector body 30 through the duct 34. In step 225 (S225), after the polishing work is completed, the operator presses the retraction instruction button on the control panel 8. In step 230 (S230), the operation detection unit 950 of the control device 9 detects that the retraction instruction button on the control panel 8 has been pressed. The retraction instruction unit 954 of the control device 9 moves the hood 34 from its position approximately directly above the mounting platform 11 so that it is removed from the track of the crane 5.

[0032] As explained above, according to the dust collection system 1 in the second embodiment, the dust collector hood 34 is moved to a position that does not interfere with the crane 5, so it does not obstruct the operation of the crane 5. In addition, with the dust collection system 1, the control panel 8 is located outside the work area, so the polishing work will not start while the worker is inside the work area, thus ensuring the safety of the worker.

[0033] [Differentiation] Next, a modified example of the dust collection system 1 will be described. In the first and second embodiments, the hood 34 moves in an arc by rotating the arm 360 around the rotation axis 362, but is not limited to this, and for example, the hood 34 may move in a straight line horizontally. Figure 8 illustrates a modified dust collection system 1. In the modified examples, elements having substantially the same function and configuration as those in the above embodiments are denoted by the same reference numerals, thus omitting redundant explanations. As illustrated in Figure 8, a modified dust collection system 1 includes a dust collector 3 and a crane 5.

[0034] The dust collector 3 comprises a dust collector body 30, a duct 32, a hood 38, and a moving mechanism 40. The hood 38 is attached to the end of the duct 32 and includes an intake port 380 for sucking in welding fumes or dust, and a cover 382 that covers the intake port 380. The cover 382 is frustum-shaped. The cover 382 widens from the upper rectangle of the frustum-shaped pyramid that covers the intake port 380 to the tip of the cover 382, ​​i.e., the lower rectangle of the frustum-shaped pyramid. As illustrated in Figure 8, the hood 38 is rectangular when viewed from above over the work area A, and is at least large enough to cover the mounting base 11. In the modified example, the hood 38 is rectangular when viewed from above over the work area, but is not limited to this, and may have a shape that depends on the shape of the object being worked on and the amount of welding fumes and dust generated.

[0035] The moving mechanism 40 moves the hood 38 of the dust collector 3. Specifically, the moving mechanism 40 comprises an arm 400, a slide rail 402, a drive unit 404, a column 366, an operation panel 8, and a control device 9. The arm 400 fixes the hood 38 to its tip and moves the hood 38. The slide rail 402 is a rail that serves as the trajectory for the movement of the arm 400. Specifically, the slide rail 402 supports the other end of the arm 400 relative to the end that fixes the hood 38. As a result, the arm 400 moves along the slide rail 402. The duct 32 also follows the movement of the hood 38 through the expansion, contraction, and curvature of the flexible duct 320. In the modified example, the slide rail 402 is linear, as illustrated in Figure 8, and the arm 400 moves horizontally along the slide rail 402 in a straight line. That is, the hood 38 fixed to the tip of the arm 400 also moves horizontally along a straight line. The installation position of the slide rail 400 is determined based on the movement path of the welding robot 13 or polishing robot 19 that performs work on the object. For example, if the object is long and the welding robot 13 or polishing robot 19 moves from one end to the other to perform work, the location where welding fumes or dust are generated extends from the one end to the other. Therefore, the slide rail 400 is installed so that the hood 38 can capture the generated welding fumes or dust.

[0036] The drive unit 404 is the power source for moving the arm 400, and is, for example, an electric motor. The drive unit 404 operates according to instructions from the control device 9. The control panel 8 is an input device for inputting instructions to the control device 9, and includes a movement instruction button for inputting instructions to move the hood 38 for performing welding or polishing work, and a retraction instruction button for inputting instructions to retract the hood 38 when welding or polishing work is completed. The control device 9 receives input to the control panel 8 and controls the moving mechanism 40. Specifically, the control device 9 controls the drive unit 404 of the moving mechanism 40 to move the arm 400 to a preset position. For example, the control device 9 is a PLC (Programmable Logic Controller).

[0037] As explained above, in the modified dust collection system 1, since the hood 38 moves in a straight line, for example, when the object to be worked on is long, the hood 38 can move according to the working position on the object, making it possible to collect dust efficiently. [Explanation of symbols]

[0038] 1…Dust collection system 3…Dust collector 5... Crane 8…Operation panel 9...Control device 11… Mounting platform 13... Welding robots 17…Partition 19… Polishing robot 32... Duct 34, 38... Food 36, 40...Movement mechanism 90... Control program 360, 400...arm 362... Rotation axis 364, 404… Drive unit 402...Slide rail 950... Operation detection unit 952…Movement instruction section 954...Evacuation instruction section

Claims

1. A dust collector for collecting welding fumes generated during welding operations, A moving mechanism for moving the hood of the dust collector that sucks up welding fumes, A control device that controls the moving mechanism and It has, The control device is Movement instruction unit outputs an instruction to the movement mechanism to move the hood to a predetermined position. It has, The work area where welding is performed is physically isolated. The movement instruction unit outputs an instruction on the condition that it receives an input operation from the worker from outside the work area. The dust collector collects welding fumes generated during welding operations from the hood, which has been moved by the moving mechanism. Dust collection system.

2. A transport device that moves objects to be welded to a designated location. It further possesses, The transport equipment moves horizontally within the work area, The moving mechanism moves the hood so that it is removed from the track of the transport equipment. The dust collection system according to claim 1.

3. The aforementioned moving mechanism is An arm for securing the hood to the tip, The rotation axis of the aforementioned arm, It has, The hood is rotated by the arm which rotates around the axis of rotation, The transport equipment places the transported object onto a platform on which the object is placed. The moving mechanism rotates the hood so that it is positioned above the object placed on the transport device. The dust collection system according to claim 2.

4. The control device is Retraction instruction unit outputs an instruction to retract the hood that has moved onto the object, based on the instruction of the movement instruction unit. It further possesses, The moving mechanism moves the hood away from the track of the transport equipment, as instructed by the retraction instruction unit. The dust collection system according to claim 3.

5. A transport step in which the transport equipment transports the object to be welded to a predetermined location, An isolation step in which the worker physically isolates the work area in which welding work is performed on the object, An input step in which an operator performs an input operation from outside the work area isolated in the isolation step to a control device that controls the movement mechanism for moving the dust collector hood, The control device includes a movement instruction step in which it outputs an instruction to move the hood of the dust collector that sucks up welding fumes to a predetermined position, The moving mechanism includes a moving step in which the hood is moved to a predetermined position in accordance with the instruction in the moving instruction step, The dust collector includes a dust collection step in which it collects welding fumes generated by welding work on an object transported by the transport equipment from the hood that has been moved in the moving step, and has Dust collection method.

6. The control device performs a retraction instruction step in which it outputs an instruction to retract the hood that has been moved by the operator's operation, The moving mechanism, in accordance with the instructions in the retraction instruction step, retracts the hood in a retraction step, It further possesses, The moving mechanism, in the retraction step, retracts the hood to a position away from the track of the transport equipment. The dust collection method according to claim 5.

7. A dust collector that collects dust generated during polishing work, A moving mechanism for moving the hood of the dust collector that sucks up dust, A control device that controls the moving mechanism and It has, The control device is Movement instruction unit outputs an instruction to the movement mechanism to move the hood to a predetermined position. It has, The work area where the polishing work is performed is physically isolated. The movement instruction unit outputs an instruction on the condition that it receives an input operation from the worker from outside the work area. The dust collector collects dust generated by the polishing work from the hood, which has been moved by the moving mechanism. Dust collection system.

8. A transport device transports the object to be polished to a predetermined location in a transport step, An isolation step in which the worker physically isolates the work area in which the polishing work on the object is performed, An input step in which an operator performs an input operation from outside the work area isolated in the isolation step to a control device that controls the movement mechanism for moving the dust collector hood, The control device performs a movement instruction step in which it outputs an instruction to move the hood of the dust collector that sucks up dust to a predetermined position, The moving mechanism includes a moving step in which the hood is moved to a predetermined position in accordance with the instruction in the moving instruction step, The dust collector includes a dust collection step in which it collects dust generated by polishing work on an object transported by the transport equipment from the hood that moved in the moving step, and has Dust collection method.

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