KR20230102662A - Control system for welding work - Google Patents

Abstract

The present invention relates to a control system for welding work. An objective of the present invention is to adjust dust collection speed in accordance with the amount of produced contaminants including welding fumes and predict the amount of produced contaminants and moving paths by analyzing welding conditions, environmental conditions, and dust collection conditions to actively pre-adjust the dust collection speed to increase dust collection efficiency and improve work environments. The control system for welding work comprises: a dust collection device collecting welding fumes produced at a welding workplace; a dust collection amount control part adjusting the dust collection speed of the dust collection device in proportion to the wire feeding speed of a wire feeder; a work environment monitoring part monitoring the fine dust concentration outside the workplace and the fine dust concentration inside the workplace; and a consumption amount calculation part calculating a wire consumption amount per hour and an accumulated consumption amount based on the wire feeding speed of the feeder.

Description

Control system for welding work {Control system for welding work}

The present invention relates to a control system for welding work, in particular, by adjusting the dust collection speed according to the amount of pollutants including welding fume, as well as by predicting the amount of pollutants generated and the movement path by analyzing welding conditions, environmental conditions, and dust collection conditions. The present invention relates to a control system for a welding operation capable of increasing dust collection efficiency and improving a working environment by actively adjusting the dust collection speed in advance.

Revolutionary development in industries such as shipbuilding, automobiles, heavy equipment, and construction was made rapidly as welding using carbon dioxide gas emerged. As it diversifies into charged composite wire (Fluxcorded wire), etc., welding fume and welding gas harmful to the human body and environment generated during welding using carbon dioxide gas have emerged as a serious industrial safety problem.

When a person inhales these welding fumes and welding gases, they are deposited in the lungs and have a fatal adverse effect on the human body. Efforts have been made to solve this problem by installing a dust collector in the workplace or using a welding fume dust collection torch.

As shown in FIG. 1, the conventional welding device includes a torch 10 for inhaling welding fume, a wire feeding device 20 for providing welding gas and adjusting the working range, and a dust collector 30 with a filter 31 installed was made including

The welding fume suction torch 10 is connected to the welding nozzle 11, has a built-in torch body for easy angle adjustment, and a rubber material or similar soft material at the front end of the torch grip with a built-in torch body A welding fume suction pipe made of is connected. And, a suction nozzle 11 sliding forward and backward is provided at the end of the welding fume suction pipe.

In the dust collector 30, a vacuum chamber is provided inside the upper end of the housing 32 in which an outlet is formed, and a suction motor 33 is installed between the vacuum chamber and the outlet. A fume box 35 is installed at the lower end where the suction pipe is formed on one side of the housing 32, and a filter member 31 is installed detachably inside the housing 32, supplying welding gas and at the same time A conventional wire feeding device 20 in which a welding wire is wound is provided connected to one side so as to adjust the working range.

Looking at the operation of the welding fume collector configured as described above, when a worker performs welding, welding fume is generated, and at this time, the welding fume is released into the atmosphere. At the same time as welding, the suction motor 33 provided in the welding fume collector operates, so that the welding fume is sucked into the welding suction pipe nozzle surrounding the outside of the welding nozzle. The welding fume sucked by the welding suction pipe nozzle is drawn into the housing 32 through the welding fume suction pipe, and the welding fume drawn into the housing 32 through the suction pipe is a suction motor It is moved to the top by the suction force of (33), and welding fume is filtered by the filter member (31) when moving to the top. The filtered welding fume passes through the vacuum chamber and the suction motor 33 and is discharged to the atmosphere through the outlet.

However, there is a limit to improving the workplace environment while actively adjusting the dust collection speed according to the generation amount of contaminants including welding fume using only such a conventional welding fume dust collector.

Registered Utility Model Publication No. 20-0200619 (2000.08.10.)

Accordingly, the present invention has been proposed to solve the above conventional problems, and an object of the present invention is to adjust the dust collection speed according to the amount of contaminants including welding fume, as well as welding conditions, environmental conditions, and dust collection conditions It is an object of the present invention to provide a control system for welding work that can increase the dust collection efficiency and improve the working environment by actively adjusting the dust collection speed in advance by predicting the pollutant generation amount and movement path by analysis.

In order to achieve the above object, a welding control system according to the technical idea of the present invention includes a dust collector for collecting welding fume generated in a welding workshop; A dust collection amount controller for adjusting the dust collection speed of the dust collector in proportion to the wire feeding speed of the wire feeder; A working environment monitoring unit that monitors the concentration of fine dust outside the workplace and the concentration of fine dust inside the workplace in real time; and a consumption calculation unit for calculating wire consumption per hour and cumulative consumption based on the wire feeding speed of the feeder.

Here, the dust collection amount controller adjusts the dust collection speed of the dust collector in proportion to the shield gas supply speed supplied to the torch together with the wire supply speed, but sets different weights to the wire supply speed and the shield gas supply speed. It may be characterized in that the dust collection speed is adjusted.

In addition, a first flow sensor installed near the torch to measure the flow rate of the shield gas supplied to the torch and a second flow sensor to measure the flow rate of the shield gas immediately after being distributed near the gas distributor are provided, The control unit adjusts the dust collection speed of the dust collector by calculating the shield gas supply rate from the shield gas flow rate measured by the first flow sensor, and the work environment monitoring unit calculates the shield gas flow rate measured by the second flow sensor and the shield gas supply rate. 1 It may be characterized by comparing the flow rate of the shield gas measured by the flow sensor to calculate the amount of shield gas leakage in the middle, and generating an inspection request signal if the amount of shield gas leakage exceeds a predetermined value.

In addition, it further includes a dust collection amount correction unit that calculates a correction coefficient for the dust collection speed of the dust collector and provides the dust collection amount control unit to correct the dust collection speed of the dust collector, wherein the dust collection amount correction unit calculates the amount of dust collection outside the workplace from the work environment monitoring unit. The correction coefficient is calculated by the following formula by receiving the fine dust concentration information and the fine dust concentration information inside the workplace,

Correction coefficient = (fine dust concentration inside the workplace - fine dust concentration outside the workplace) / fine dust concentration outside the workplace

It may be characterized in that the dust collection amount control unit corrects the dust collection speed of the dust collector with a weight in proportion to the correction coefficient calculated by the dust collection amount correction unit.

In addition, the dust collection amount correction unit calculates a weight for each area by receiving fine dust concentration information for each area in real time from fine dust measuring sensors installed in a plurality of areas in the workplace and measuring the fine dust concentration, and the dust collection amount control unit may be characterized in that the dust collection speed of the dust collector installed in each zone is differentially corrected by applying the weight for each zone calculated by the dust collection amount correction unit.

In addition, fine dust concentration information in each zone is provided in real time from the fine dust measurement sensors installed in multiple zones in the workplace to measure the concentration of fine dust, and the rate of change in the concentration of fine dust per unit time is calculated for each zone, and from this, the fine dust concentration change rate per unit time is calculated. It further includes a movement path prediction unit for generating movement path information, wherein the dust collection amount control unit receives the movement path information of the fine dust generated by the movement path prediction unit and preemptively adjusts the dust collection speed of dust collectors installed in each zone. It can be characterized as increasing or decreasing.

In addition, the movement path information of the fine dust generated by the movement path prediction unit has the region with the highest fine dust reduction rate per unit time and the region with the highest fine dust increase rate per unit time as the starting and ending points, and the regions located in the middle are virtual It can be characterized as being made by connecting to.

In addition, a work environment improvement unit that increases or decreases the rotational speed of the exhaust fan installed in each zone by receiving the fine dust concentration information by zone in real time from the fine dust measuring sensors installed in multiple zones in the workplace to measure the concentration of fine dust It can be characterized by including.

In addition, a gyro sensor is installed in the welding mask device used in each zone of the workplace to detect the direction of viewing, and the dust collection amount control unit collects the dust of the dust collector when the welding mask device is in a downwardly laid state. It may be characterized in that the dust collection speed of the dust collector is increased when the speed is lowered and the welding mask device is in a state where it is erected to look upward or to the side.

In addition, the mask device for welding, covering the face of the welding operator and a mask body provided with a see-through window on the front; And mounted inside the mask body, a camera for photographing the front of the mask body as seen through the viewing window of the mask body is installed on the front side, and the camera is installed on the rear side at a position corresponding to the eye level of the welding operator. It may be characterized by including; an augmented reality glass module having a display outputting a composite image obtained by overlapping an augmented reality layer reflecting an image and augmented reality content.

In addition, the augmented reality glass module includes a recognition unit for recognizing a region to be welded displayed on the object to be welded from an actual image taken by the camera; and a layer creation unit for generating a translucent augmented reality layer displaying the region to be welded recognized by the recognition unit in the form of a line or a closed curve as the augmented reality content.

In addition, the viewing window is provided with a light blocking material, and the recognition unit recognizes the welding target area along the tack welding flame when the welding operator directs the welding target area while generating a welding spark on the surface of the welding object before the welding operation. can be characterized.

In addition, the viewing window may be made of a transparent material, and the recognition unit may recognize a color or mark previously displayed on the object to be welded as a region to be welded.

In addition, the augmented reality glass module further includes a shutter unit that lowers the contrast of the actual image captured by the camera to below a certain level in order to protect the eyesight of the welding worker at the moment when a certain level of illuminance is detected due to welding sparks. can be characterized.

In addition, an intake/exhaust area having a plurality of air inlets is provided at the lower part of the front surface of the mask body, and a dust collection filter for filtering out fine dust is installed in the intake/exhaust area. It is provided with a first fine dust measuring sensor and a second fine dust measuring sensor that measures the fine dust concentration after dust collection at the back of the dust collecting filter, and the fine dust concentration measured by the second fine dust measuring sensor is the augmented reality content is displayed on the augmented reality layer, and if the concentration of fine dust after dust collection is above a certain value, characters or symbols for requesting filter replacement are additionally displayed on the augmented reality layer, and before dust collection measured by the first fine dust measuring sensor Fine dust concentration information is provided to the management server in real time through the communication unit included in the augmented reality glass module, and when the measured concentration of fine dust before dust collection is above a certain value, it is characterized in that it is possible to request improvement of the working environment of the workplace. can

The control system for welding work according to the present invention not only adjusts the dust collection speed according to the amount of pollutants including welding fume, but also adjusts the dust collection speed by predicting the amount of pollutants generated and the movement path by analyzing welding conditions, environmental conditions, and dust collection conditions. It is to provide a control system for welding work that can increase the dust collection efficiency and improve the working environment by actively adjusting in advance.

1 is a reference diagram for explaining the prior art
Figure 2 is a configuration diagram of the entire welding system to which the control system for welding work according to an embodiment of the present invention is applied
Figure 3 is a block diagram of a control system for welding work according to an embodiment of the present invention
Figure 4 is a perspective view of a mask device for welding in the welding control system according to an embodiment of the present invention
Figure 5 is a rear perspective view of a mask device for welding in the welding control system according to an embodiment of the present invention
Figure 6 is a rear view of the welding mask device in the control system for welding work according to an embodiment of the present invention
7 is a partially exploded perspective view of a welding mask device in a welding control system according to an embodiment of the present invention
Figure 8 is an exploded perspective view of the rear part of the welding mask device in the control system for welding work according to an embodiment of the present invention
Figure 9 is a cross-sectional view along II' of Figure 4
10 is a configuration diagram of a welding mask device in a welding control system according to an embodiment of the present invention

Referring to the accompanying drawings, a control system for a welding operation according to embodiments of the present invention will be described in detail. Since the present invention can have various changes and various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention, or reduced than actual in order to understand the schematic configuration.

Also, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, they are not interpreted in an ideal or excessively formal meaning. .

<Example>

2 is a configuration diagram of an entire welding system to which a control system for a welding operation according to an embodiment of the present invention is applied, and FIG. 3 is a configuration diagram of a control system for a welding operation according to an embodiment of the present invention.

As shown, the control system for welding work according to an embodiment of the present invention includes a dust collector 310, an exhaust fan 330, a dust collection amount control unit 321, a work environment monitoring unit 322, a consumption amount calculation unit 323, A dust collection amount correction unit 324, a movement path prediction unit 325, a working environment improvement unit 326, a first flow sensor 260a, a second flow sensor 260b, fine dust measuring sensors 140a and 140b, The gyro sensor 140c is included as a main component.

The control system for welding work according to an embodiment of the present invention adjusts the dust collection speed according to the generation amount of pollutants including welding fume by the above components, as well as pollutants by analyzing welding conditions, environmental conditions, and dust collection conditions. It is configured to increase the dust collection efficiency and improve the working environment by actively adjusting the dust collection speed in advance by predicting the generation amount and movement path.

Hereinafter, a control system for a welding operation according to an embodiment of the present invention will be described in more detail, focusing on the above components.

The dust collector 310 collects welding fume generated in a welding workshop. The dust collector 310 filters the welding fume generated from the torch 240 by the rotational force of the motor, like the weld groove dust collector disclosed by the present applicant in Patent Publication No. 2020-0063843 (2020.06.05) It may be provided as a dust collector that collects by sucking into the installed housing.

The exhaust fan 330 is installed to discharge polluted air from the workplace to the outside and is provided in the exhaust duct. The rotation speed of the exhaust fan 330 is controlled by the work environment improvement unit 322 in a plurality of zones in the workplace, and the rotation speed of the exhaust fan 330 increases when the concentration of fine dust in the zone is relatively high. When low, the rotational speed of the exhaust fan 330 is reduced. According to the configuration in which the rotational speed of the exhaust fan 330 is controlled by the working environment improvement unit 322, energy consumption due to the operation of the exhaust fan 330 is minimized while maintaining the concentration of fine dust in the entire workplace at an appropriate level. By doing so, the working environment can be improved.

The dust collection amount controller 321 serves to control the amount of dust collection by adjusting the dust collection speed of the dust collector 310 . To this end, the dust collection amount controller 321 adjusts the dust collection speed of the dust collector 310 in proportion to the wire feeding speed of the wire feeder 280 . Here, the dust collection amount controller 321 may be configured to adjust the dust collection speed of the dust collector 310 in proportion to the magnitudes of the welding current and voltage applied to the torch 240 .

In addition to this, the dust collection amount controller 321 is configured to adjust the dust collection speed of the dust collector 310 in proportion to the shield gas supply speed supplied to the torch 240 . However, the dust collection speed of the dust collector 310 is controlled by considering both the wire supply speed and the shield gas supply speed by adjusting the dust collection speed of the dust collector 310 by placing different weights on the wire supply speed and the shield gas supply speed. make it possible For example, the dust collection speed of the dust collector 310 may be adjusted by applying a specific gravity of 0.8 to the wire supply speed and applying a specific gravity of 0.2 to the shield gas supply speed. In this way, in order for the dust collection amount controller 321 to adjust the dust collection speed of the dust collector 310 in consideration of the shield gas supply speed, as shown in FIG. 2, a shield installed near the torch 240 and supplied to the torch 240 A first flow sensor 260a for measuring the flow rate of gas and a second flow sensor 260b for measuring the flow rate of shield gas immediately after being distributed near the gas distributor are installed, and the dust collection amount control unit 321 has a first The dust collection speed of the dust collector 310 may be adjusted by calculating the shield gas supply speed from the shield gas flow rate measured by the flow sensor 260a.

The working environment monitoring unit 322 compares the flow rate of the shield gas measured by the second flow sensor 260b and the flow rate of the shield gas measured by the first flow sensor 260a to calculate the amount of shield gas leaked in the middle. And, if the amount of shield gas leakage exceeds a certain value, an inspection request signal is generated and notified to the management office. This allows the manager to immediately check the leakage of shield gas to prevent misuse and abuse of shield gas, and to prevent increased costs and increased carbon emissions due to excessive supply of shield gas.

The consumption calculation unit 323 calculates power consumption per hour and hourly power consumption from the magnitude of the welding current and voltage of the torch 240, the wire feeding speed of the wire feeder 280, and the shield gas supply flow rate supplied through the torch 240. Calculate wire consumption, shield gas consumption per hour, and their cumulative consumption. The consumption information calculated in this way is stored in the database 327 . As described above, it is possible to grasp a cost expenditure trend according to a welding operation and to set up a plan for cost reduction by the configuration including the consumption calculation unit 323 . The consumption amount information calculated by the consumption calculation unit 323 is stored in the database 327 .

The dust collection amount correction unit 324 serves to calculate the correction coefficient of the dust collection speed of the dust collector 310 and provides the correction coefficient so that the dust collection amount correction unit 324 corrects the dust collection speed of the dust collector 310. . The dust collection amount correction unit 324 receives the fine dust concentration information outside the workplace and the fine dust concentration information inside the workplace from the work environment monitoring unit 322 and calculates a correction coefficient by the following formula.

Correction coefficient = (fine dust concentration inside the workplace - fine dust concentration outside the workplace) / fine dust concentration outside the workplace

Then, the dust collection amount controller 321 corrects the dust collection speed of the dust collector 310 with a weight in proportion to the correction coefficient calculated in this way.

Furthermore, the dust collection amount correction unit 324 receives fine dust concentration information for each region in real time from fine dust measuring sensors installed in a plurality of regions in the workplace and measures the concentration of fine dust, and calculates a weight for each region. Accordingly, the dust collection amount control unit 321 differentially corrects the dust collection speed of the dust collector 310 installed in each area by applying the weight for each area calculated by the dust collection amount correction unit 324. Accordingly, it is possible to adjust the dust collection speed inside the workplace for each zone based on the external environment of the workplace.

The movement path prediction unit 325 serves to generate movement path information of fine dust so that the dust collection amount controller 321 can preemptively increase or decrease the dust collection speed of the dust collector 310 . To this end, the movement path prediction unit 325 receives fine dust concentration information by region in real time from fine dust measuring sensors installed in a plurality of zones in the workplace and measures the concentration of fine dust, and then fine dust concentration per unit time for each zone. The rate of change is calculated, the area with the highest fine dust reduction rate per unit time and the area with the highest fine dust increase rate per unit time are the starting and ending points, and the intermediate areas are virtually connected to determine the movement path and direction of fine dust. Creates movement path information that includes this. In this way, when the movement path prediction unit generates the movement path information of the fine dust, the dust collection amount control unit 321 receives the movement path information of the fine dust generated by the movement path prediction unit 325, and the dust collector installed in each zone ( 310) preemptively increases or decreases the dust collection speed. For example, in the case of an area where the rate of change of the fine dust concentration is the highest, the current fine dust concentration is not the highest, but the dust collector 310 is operated at the highest dust collection speed to prevent the fine dust concentration from increasing to the worst situation. can do. In addition, the dust collection speed of the dust collector 310 is further increased with a weight even in areas where the rate of change in the fine dust concentration increases.

The working environment improvement unit 326 receives the fine dust concentration information for each zone in real time from the fine dust measuring sensors 140a and 140b installed in a plurality of zones in the workplace, and when the fine dust concentration is relatively high, the exhaust fan 330 ) and, if low, the rotational speed of the exhaust fan 330 is reduced. The exhaust fan 330 is installed in the exhaust duct to discharge fine dust from the workplace to the outside of the workplace. According to the configuration provided with the working environment improvement unit 326 as described above, it is possible to improve the working environment by maintaining the concentration of fine dust in the entire workplace at an appropriate level while minimizing energy consumption due to the operation of the exhaust fan 330 .

As shown in FIG. 2, the first flow sensor 260a is installed near the torch 240 to measure the flow rate of the shield gas supplied to the torch 240, and the second flow sensor 260b is installed near the gas distributor. It is installed in and measures the flow rate of shield gas immediately after distribution. According to the configuration including the first flow sensor 260a and the second flow sensor 260b, the final supply flow rate of the shield gas can be measured, as well as the initially branched supply flow rate and the final supply flow rate of the shield gas can be measured. It is also possible to take action by calculating the amount of shield gas leakage leaked in the middle. In addition, the dust collection amount controller 321 may adjust the dust collection speed of the dust collector 310 in proportion to the shield gas supply speed by calculating the shield gas supply speed from the shield gas flow rate measured by the first flow sensor 260a. there will be This is because the high supply rate of the shield gas means that the amount of welding and the amount of fumes generated are proportional to it. Meanwhile, the working environment monitoring unit 322 compares the flow rate of the shield gas measured by the second flow sensor 260b and the flow rate of the shield gas measured by the first flow sensor 260a to shield gas leaking in the middle. The leakage amount is calculated, and if the calculated shield gas leakage amount exceeds a certain value, an inspection request signal is generated to notify the management office. Accordingly, it is possible to minimize the amount of shield gas that is unnecessarily consumed in the middle.

The fine dust measurement sensors 140a and 140b serve to measure the concentration of fine dust in each zone of the workplace. When such a fine dust measuring sensor measures the concentration of fine dust in each zone and generates fine dust concentration information for each zone in real time, the generated fine dust concentration information for each zone is collected by the dust collection amount control unit 321 and the amount of dust collection. It is a basis for adjusting the dust collection speed of the dust collector 310 in the correction unit 324 . In addition, the movement path prediction unit 325 generates movement path prediction information, and the working environment improving unit 326 increases or decreases the rotational speed of the exhaust fan 330 to serve as a basis for improving the working environment. Such a fine dust measuring sensor may be installed in a fixed form in each area of the workplace, and may be provided in each area in the workplace in a form installed in the mask body of the welding mask device 100. In the latter case, the fine dust measuring sensor is installed in the intake/exhaust area provided at the lower front of the mask body, and the first fine dust measuring sensor 140a measures the concentration of fine dust before dust collection at the front of the dust collecting filter, and at the rear of the dust collecting filter. It is provided as a second fine dust measurement sensor 140b for measuring the concentration of fine dust after dust collection. The first fine dust measurement sensor 140a measures the concentration of fine dust that has not been purified in the area where it is currently located to generate fine dust concentration information, and the information is generated by the management office, the dust collection control unit 321, the dust collection amount correction unit 324, and the movement route. It is transmitted to the prediction unit 325 and the working environment improvement unit 326 so that it can be utilized. The second fine dust measuring sensor 140b measures the purified fine dust concentration after being collected by the dust collecting filter, and the measured fine dust concentration is displayed on the augmented reality layer as augmented reality content. If the concentration of fine dust exceeds a certain level after dust collection, characters or symbols for requesting filter replacement are additionally displayed on the augmented reality layer.

The gyro sensor 140c is installed in the welding mask device 100 used in the workplace to detect the direction the welding mask device 100 is facing. Accordingly, when the welding mask device 100 is laid down, the welding operation is considered to be stopped in the corresponding area, and the dust collection amount controller 321 lowers the dust collection speed of the dust collector 310 or the dust collector ( 310) stops, and when the welding mask device 100 is erected to look upward or to the side, it is considered that a welding operation is in progress in the corresponding area, and the dust collection speed of the dust collector 310 is increased. As described above, according to the configuration in which the gyro sensor 140c is installed in the welding mask device 100, it is possible to detect a change in posture of the welding mask device 100, and accordingly, it is determined whether the welding operation is in progress or stopped to determine whether the welding operation is in progress or stopped. It can be reflected in the control of the dust collection speed of the dust collector 310.

Hereinafter, in the control system for welding work according to an embodiment of the present invention, the welding mask device 100 provided in each zone of the workplace and responsible for important functions will be described.

4 is a perspective view of a mask device for welding in a control system for a welding operation according to an embodiment of the present invention, and FIG. 5 is a rear perspective view of a mask device for welding in a control system for a welding operation according to an embodiment of the present invention. FIG. It is a rear view of a mask device for welding in the control system for welding work according to an embodiment of the present invention, and FIG. 7 is a partially exploded perspective view of the mask device for welding in the control system for welding work according to the embodiment of the present invention. It is an exploded perspective view of the rear part of the welding mask device in the welding control system according to the embodiment of the present invention. And FIG. 9 is a cross-sectional view taken along line II′ of FIG. 4 .

As shown, in the control system for welding work according to an embodiment of the present invention, the mask device for welding includes a mask body 110 and augmented reality that grafts augmented reality (AR) technology to the mask body 110. It consists of a glass module 120, a dust filter 130, and fine dust measurement sensors 140a and 140b as main components.

The mask body 110 is not significantly different from the shape of a normal welding mask and serves to cover and protect the face of a welding worker during welding. A viewing window 111 is installed on the front surface of the mask body 110 . The viewing window 111 may be made of a light blocking material like the viewing window of a general welding mask. However, in order to maximize the function of the augmented reality glass module 120, it is preferable to be provided with a transparent material. When the viewing window 111 is made of a transparent material, a light blocking filter 112 for protecting the eyesight of a welding operator from welding sparks is detachably mounted on the rear side of the viewing window 111 . According to the configuration in which the light-blocking filter 112 is detachably provided, when the augmented reality glass module 120 is mounted on the mask body 110, the light-blocking filter 112 is removed from the rear side of the viewing window 111 to create augmented reality The camera 122 of the glass module 120 can block light while smoothly photographing the front of the mask body 110 through the see-through window 111, and the augmented reality glass module 120 is attached to the mask body 110. When not mounted, the light blocking filter 112 is mounted on the rear side of the viewing window 111 so that welding can be performed by the mask body 110 alone.

As shown in FIGS. 7 and 8 , a pair of elastic holders 113 for mounting the augmented reality glass module 120 are installed on the left and right sides of the rear surface of the mask body 110 . The elastic holder 113 supports and mounts the augmented reality glass module 120 on the left and right sides of the mask body 110 . The elastic holder 113 is composed of a fixing part 113a fixed to the inner sidewall of the mask body 110, extending in an elongated shape backward from the fixing part 113a and made of an elastic material, so that the augmented reality glass module 120 An elastic connecting portion 113b in close contact with the side of the main body 121, and a snap coupling portion made of a shape that is additionally extended from the rear end of the elastic connecting portion 113b and protrudes inward compared to the elastic connecting portion 113b ( 113c). Here, in the case of the fixing part 113a of the elastic holder 113, a support protrusion 113d protruding from the inner surface facing each other is further formed.

As a result, the snap coupling portion 113c of the elastic holder 113 is first snapped and seated in the snap coupling groove 121a formed at the rear end of both sides of the main body 121 of the augmented reality glass module 120, and the augmented reality glass module ( 120) in a state in which the support protrusions 113d of the fixing part 113a are inserted into the protrusion inlet grooves 121b formed at the front ends of both sides of the main body 121, and a pair of elastic holders 113 insert the augmented reality glass module 120. Stable support is possible. In particular, the support protrusion 113d of the fixing part 113a of the elastic holder 113 and the protrusion inlet groove 121b formed at the front end of both sides of the main body 121 of the augmented reality glass module 120 result in augmented reality glass module In a state where the front end of 120 is located deeper inside the rear surface of the mask body 110 than the fixed point of the elastic holder 113, it can be noted that the stable support structure allows both the front and rear ends to be supported. This is so that the augmented reality glass module 120 does not interfere with the welding work despite the fact that the elastic holder 113 is formed as a straight body extending to the rear so that the augmented reality glass module 120 can be easily attached and detached. This means that it can be supported very stably.

The inner surface of the elastic connection part 113b of the elastic holder 113 is electrically connected to the first fine dust measuring sensor 140a and the second fine dust measuring sensor 140b installed in the mask body 110 to exchange information. A connection terminal 113e is installed to enable This facilitates wiring processing to exchange information between the augmented reality glass module 120 and the first fine dust measuring sensor 140a and the second fine dust measuring sensor 140b installed on the mask body 110 .

An intake/exhaust area 114 having a plurality of air inlets 114a is provided at the lower front of the mask body 110, and a dust collection filter for filtering out fine dust as shown in FIG. 9 inside the intake/exhaust area 114 ( 130) is installed. The dust collection filter 130 is preferably installed in a replaceable form. In addition, a first fine dust measurement sensor 140a for measuring the concentration of fine dust before dust collection is installed on the front side of the dust collection filter 130, and a second fine dust measurement sensor 140a for measuring the concentration of fine dust after dust collection is installed on the back side of the dust collection filter 130. (140b) is installed.

Here, when the concentration of fine dust before dust collection measured by the first fine dust measurement sensor 140a is above a certain value, information on the concentration of fine dust before dust collection is provided to a separately installed management server through the communication unit included in the augmented reality glass module 120 To request improvement of the work environment in the workplace. On the other hand, if the fine dust concentration measured by the second fine dust measurement sensor 140b is above a certain value, it is displayed as a filter replacement request letter or symbol as part of the augmented reality content in the augmented reality layer.

As described in the introduction, the augmented reality glass module 120 directly provides welding workers with information that can increase the convenience and efficiency of welding work, and monitors the welding worker's physical condition and working environment in real time to obtain a macroscopic view. It plays a key role in improving the working environment and building a more efficient work management system.

To this end, the augmented reality glass module 120 is simply attached and detached by a pair of elastic holders 113 provided on the mask body 110 at a position corresponding to the rear surface of the viewing window 111 as shown in FIGS. 7 and 8 possible to be installed To this end, protrusion inlet grooves 121b and snap coupling grooves 121a are formed in concave shapes at the front and rear ends of both side surfaces of the main body 121 of the augmented reality glass module 120, respectively. As a result, the augmented reality glass module 120 is stably supported by the fixing part 113a of the elastic holder 113, the support protrusion 113d and the snap coupling part 113c.

A camera 122 for photographing the front of the mask body 110 through the viewing window 111 of the mask body 110 is installed on the front of the main body of the augmented reality glass module 120, and the rear surface corresponds to the eye level of the welding operator A display 123 outputting a composite image in which a real image taken by the camera 122 through the viewing window 111 and an augmented reality layer reflecting augmented reality content is overlapped is provided at the location. Internally, as shown in FIG. 10, a recognition unit, a layer creation unit, a shutter unit, and a location information generation unit are provided around a control unit that controls the entire module to implement an augmented reality function, and a welding worker's body condition is monitored. To this end, a heart rate measuring sensor 124a and a body temperature measuring sensor 124b are also provided. Here, a close contact shield ring 122a made of a soft elastic material is installed along the lens circumference of the camera 122 on the front of the main body 121 of the augmented reality glass module 120 . The close shield ring 122a is in close contact with the rear side of the viewing window 111 when the augmented reality glass module 120 is mounted on the mask body 110, and the camera 122 ) serves to protect the filming from being disturbed.

The recognizing unit recognizes the region to be welded displayed on the object to be welded from the actual image captured by the camera 122, and the layer creation unit displays the region to be welded as augmented reality content in the form of a line or a closed curve. It plays a role in creating a semi-transparent augmented reality layer. Here, the recognizing unit recognizes the welding target part along with the tack welding spark when the welding worker directs the welding target part while generating tack welding sparks on the surface of the object to be welded before the welding operation. In this case, it is suitable when the viewing window 111 is provided with a light blocking material such as polarized glass that blocks most of the light itself to protect the eyesight of the welding worker, and it is possible to use a normal welding mask as it is. There are advantages.

Meanwhile, the recognition unit may recognize a color or mark previously displayed on the object to be welded as a region to be welded. This case is suitable when the viewing window 111 is not configured to block light by itself. In the case of the latter in which the viewing window 111 is configured not to block light by itself, it is advantageous to maximize the augmented reality glass module 120 as described above.

The shutter unit lowers the contrast of the actual image captured by the camera 122 to below a certain level at the moment when the augmented reality glass module 120 detects a certain level of illuminance due to welding sparks. When such a shutter unit is provided, it is possible to more actively protect the eyesight of a welding worker by minimizing the time exposed to intense welding sparks.

The location information generating unit serves to sense a current location and generate location information. As a result, it is possible to provide location information to an external management server through the communication unit. In this way, when the augmented reality glass module 120 is provided with a location information generation unit, identification numbers can be assigned to a plurality of welding mask devices used in various workplaces to confirm their location, so systematic equipment management becomes possible. .

The communication unit is responsible for communication of the augmented reality glasses module 120 and is responsible for connection between the management server and the augmented reality glasses module as shown in FIG. 9 . When such a communication unit is provided, the augmented reality glasses module 120 provides information collected and generated by itself to a management server located in a remote location, and can receive external information (second environment information) from the management server through the Internet. It happens. Selected information among the transmitted and received information is displayed on the augmented reality layer as augmented reality content.

The heart rate measurement sensor 124a is installed on the rear surface of the augmented reality glass module 120 and serves to measure the heart rate by contacting the welding worker's face. Accordingly, the heart rate information of the operator measured and generated by the heart rate sensor 124a may be displayed in the augmented reality layer as augmented reality content.

Like the heart rate sensor 124a, the body temperature measurement sensor 124b is installed on the rear surface of the augmented reality glass module 120 and serves to measure the body temperature by contacting the welding worker's face. As a result, the body temperature information of the operator measured and generated by the body temperature measuring sensor 124b may be displayed on the augmented reality layer as augmented reality content.

Since the heart rate information and body temperature information based on the measurements of the heart rate sensor 124a and the body temperature sensor 124b are important criteria for checking the physical condition of the welding worker, they are directly applied to the augmented reality layer as augmented reality content. It is displayed to allow the welding worker to check his/her own condition, and it is transmitted to the management server in real time through the communication unit to check the condition of the worker in real time and grant a break or comprehensively review the collected related information to determine the working time for each welding worker, It makes it possible to establish detailed plans such as shift timing.

As described above, the gyro sensor 140c serves to sense the direction in which the welding mask device 100 is looking. Accordingly, when the welding mask device 100 is laid down, the welding operation is considered to be stopped in the corresponding area, and the dust collection amount controller 321 lowers the dust collection speed of the dust collector 310 or the dust collector ( 310) is stopped, and when the welding mask device 100 is erected to look upward or to the side, it is considered that the welding operation is in progress in the corresponding area, and the dust collection amount control unit 321 controls the dust collection device 310. ) increases the dust collection speed. According to the configuration in which the gyro sensor 140c is installed in the welding mask device 100, it is possible to detect a change in posture of the welding mask device 100, and accordingly, it is possible to determine whether the welding operation is in progress or stopped to collect dust. It can be reflected in the control of the dust collection speed of the device 310. As such, in the case of the gyro sensor 140c in the welding mask device 100, the first fine dust measurement sensor and the gyro sensor 140c are important for improving the environment in the workplace in conjunction with other components of the control system for welding work. will play a role.

Although preferred embodiments of the present invention have been described above, the present invention can use various changes, modifications, and equivalents. It is clear that the present invention can be equally applied by appropriately modifying the above embodiment. Therefore, the above description does not limit the scope of the present invention, which is defined by the limits of the following claims.

100: mask device for welding 110: mask body
120: augmented reality glass module 210: (shield gas) storage container
220: shield gas distributor 230: welder
240: torch 250a: first solenoid valve
250b; Second solenoid valve 260a: first flow sensor
260b: second flow sensor 280: wire feeder
310: dust collector 320: management server
321: dust collection control unit 322: working environment monitoring unit
323: consumption calculation unit 325: movement path prediction unit
326: Work Environment Improvement Department 327: Database

Claims (15)

A dust collector for collecting welding fume generated in a welding workshop;
A dust collection amount controller for adjusting the dust collection speed of the dust collector in proportion to the wire feeding speed of the wire feeder;
A working environment monitoring unit that monitors the concentration of fine dust outside the workplace and the concentration of fine dust inside the workplace in real time; and
a consumption calculation unit for calculating wire consumption per hour and cumulative consumption based on the wire feeding speed of the feeder;
Control system for welding work comprising a. According to claim 1,
The dust collection amount controller adjusts the dust collection speed of the dust collector in proportion to the shield gas supply speed supplied to the torch together with the wire supply speed, but sets different weights to the wire supply speed and the shield gas supply speed. Control system for welding work, characterized in that for adjusting. According to claim 2,
A first flow sensor installed near the torch to measure the flow rate of the shield gas supplied to the torch, and a second flow sensor to measure the flow rate of the shield gas immediately after being distributed near the gas distributor,
The dust collection amount controller calculates a shield gas supply rate from the shield gas flow rate measured by the first flow sensor to adjust the dust collection rate of the dust collector;
The working environment monitoring unit compares the flow rate of the shield gas measured by the second flow sensor and the flow rate of the shield gas measured by the first flow sensor to calculate the amount of shield gas leakage leaked in the middle, and the amount of shield gas leakage is constant. A control system for welding work, characterized in that for generating an inspection request signal if the value is greater than or equal to the value. According to claim 1,
Further comprising a dust collection amount correction unit that calculates a correction coefficient for the dust collection speed of the dust collector and provides the dust collection amount control unit to correct the dust collection speed of the dust collector,
The dust collection amount correction unit receives the fine dust concentration information outside the workplace and the fine dust concentration information inside the workplace from the working environment monitoring unit and calculates a correction coefficient by the following formula,
Correction coefficient = (fine dust concentration inside the workplace - fine dust concentration outside the workplace) / fine dust concentration outside the workplace
The control system for welding work, characterized in that the dust collection amount control unit corrects the dust collection speed of the dust collector with a weight in proportion to the correction coefficient calculated by the dust collection amount correction unit. According to claim 1,
The dust collection amount correction unit receives fine dust concentration information for each region in real time from fine dust measuring sensors installed in a plurality of regions in the workplace and measures the concentration of fine dust, and calculates a weight for each region,
The control system for welding work, characterized in that the dust collection amount control unit differentially corrects the dust collection speed of the dust collector installed in each area by applying the weight for each area calculated by the dust collection amount correction unit. According to claim 1,
Fine dust concentration information in each zone is provided in real time from the fine dust measurement sensors installed in multiple zones in the workplace to measure the concentration of fine dust, and the rate of change in the concentration of fine dust per unit time is calculated for each zone, from which the movement of fine dust Further comprising a movement path prediction unit for generating path information,
The control system for welding work, characterized in that the dust collection amount controller preemptively increases or decreases the dust collection speed of the dust collector installed in each zone by receiving the movement path information of the fine dust generated by the movement path prediction unit. According to claim 6,
The fine dust movement route information generated by the movement route prediction unit has the region with the highest fine dust reduction rate per unit time and the region with the highest fine dust increase rate per unit time as the starting and ending points, and virtually connects the intermediate regions. A control system for welding work, characterized in that made by. According to claim 1,
Further comprising a work environment improvement unit that increases or decreases the rotational speed of the exhaust fan installed in each zone by receiving the fine dust concentration information in each zone in real time from the fine dust measuring sensors installed in multiple zones in the workplace to measure the concentration of fine dust A control system for welding work, characterized in that. According to claim 1,
A gyro sensor is installed in the welding mask device used in each area of the workshop to detect the direction of looking.
The dust collection amount control unit lowers the dust collection speed of the dust collector when the welding mask device is laid down and increases the dust collection speed of the dust collector when the welding mask device is erected to face upward or sideward. A control system for welding work, characterized in that. The method of claim 9, wherein the welding mask device,
A mask body with a see-through window installed on the front and covering the welding worker's face; and
Mounted inside the mask body, a camera for photographing the front of the mask body as seen through the viewing window of the mask body is installed on the front side, and an actual image captured by the camera on the rear side at a position corresponding to the eye level of the welding operator and an augmented reality glass module having a display outputting a synthesized image obtained by overlapping an augmented reality layer reflecting augmented reality content. According to claim 10,
The augmented reality glass module includes a recognition unit for recognizing a region to be welded displayed on the object to be welded from an actual image captured by the camera; and
A control system for a welding operation comprising: a layer creation unit for generating a translucent augmented reality layer displaying the region to be welded recognized by the recognition unit in the form of a line or a closed curve as the augmented reality content. According to claim 11,
The viewing window is provided with a light blocking material,
Wherein the recognition unit recognizes the welding target part along with the tack welding spark when the welding worker directs the welding target part while generating tack welding sparks on the surface of the welding object before the welding operation. According to claim 11,
The viewing window is provided with a transparent material,
The control system for a welding operation, characterized in that the recognition unit recognizes a color or mark previously displayed on the object to be welded and recognizes it as a part to be welded. According to claim 11,
The augmented reality glass module further includes a shutter unit that lowers the contrast of the actual image captured by the camera to below a certain level in order to protect the eyesight of the welding worker at the moment when a certain level of illuminance is detected due to welding sparks. A control system for welding work. According to claim 11,
An intake/exhaust area with a plurality of air inlets is provided at the lower front of the mask body, and a dust collection filter for filtering fine dust is installed in the intake/exhaust area, and a first fine dust concentration measuring the concentration of fine dust before dust collection is installed in the front surface of the dust collection filter. It is provided with a dust measuring sensor and a second fine dust measuring sensor that measures the concentration of fine dust after dust collection at the back of the dust collecting filter, and the fine dust concentration measured by the second fine dust measuring sensor is augmented as the augmented reality content. It is displayed on the reality layer, and when the concentration of fine dust after dust collection is above a certain value, characters or symbols for requesting filter replacement are additionally displayed on the augmented reality layer,
The fine dust concentration information before dust collection measured by the first fine dust measurement sensor is provided to the management server in real time through the communication unit included in the augmented reality glass module, and if the measured fine dust concentration before dust collection is above a certain value, the corresponding workplace A control system for welding work, characterized in that for requesting work environment improvement.

Images