KR102231958B1 - Automatic detection apparatus for welding area check and welding status and automatic detection method using the same - Google Patents

Abstract

Disclosed are an automatic detection apparatus for checking a welding area and a welding status and an automatic detection method using the same, which are designed to be able to automatically determine the thickness of the welding area and the steel grade deviation, to control the pressurizing force, and to precisely grant stress to the position of the welding area. To this end, according to the present invention, the automatic detection apparatus for checking the welding area and the welding status and the automatic detection method using the same are able to precisely hit a welding bonding unit between a preceding steel sheet and a following steel sheet with a certain force, to objectively check if there is any disorder in the welding status, to remove the generation of a coil break of a strip, which has occurred previously, to improve workers′ safety, and to enhance productivity by removing the need to check and repair facilities because of disorders in the facilities. According to the present invention, the automatic detection apparatus for checking the welding area and the welding status comprises: an upper die unit, a lower die unit, a die fixing supporter, a hitting force-granting transfer unit, a position sensor, an image photographer, a control unit, a pressure sensor, an alert lamp, and an image photographer supporter.

Description

Welding part confirmation and welding condition automatic detection device and its detection method {AUTOMATIC DETECTION APPARATUS FOR WELDING AREA CHECK AND WELDING STATUS AND AUTOMATIC DETECTION METHOD USING THE SAME}

The present invention relates to a welding part identification and welding state automatic detection device and a detection method thereof, and more particularly, to a welding part designed to automatically determine the welding part thickness and steel type deviation to adjust the pressing force, and to accurately apply stress to the welding part position. The present invention relates to an apparatus for automatically detecting and detecting a welding state, and a method for detecting the same.

In general, cold-rolled and plated materials are subjected to a subsequent process after manufacturing a strip obtained by butt-welding a preceding steel plate and a trailing steel plate. However, during the welding of cold-rolled and plated materials, there were variations depending on the thickness of the strip between the wire, the preceding steel plate and the trailing steel plate, and the steel type (general, soft, high tensile strength, giga grade).

Accordingly, when the operator manually strikes the welded part of the strip made of different thicknesses and steel types with a hammer, the stress cannot be uniformly transmitted to the welded part, thereby causing plate breakage of the strip, and equipment failure and productivity due to the plate breakage of the strip. A decrease is occurring.

As described above, in the related art, after the operator hits the welded portion of the strip with a hammer, the welding state of the welded portion was visually confirmed. For this reason, it is not objective whether or not the welding part is connected, and when the line is operated in the subjective state of the operator, it acts as a factor causing the plate breakage of the strip. For this reason, productivity is decreasing due to worker safety and equipment failure.

This will be described in more detail below with reference to the accompanying drawings.

1 is a photograph for explaining a conventional method for striking a weld, and FIG. 2 is a photograph for explaining a method for confirming a welding state after striking a conventional weld.

First, as shown in FIG. 1, in the related art, a worker hits through a hammer by a welding part hitting method. Such a hitting method is not easy to accurately hit the weld joint, and it is difficult to hit the welded joint for a long time, resulting in a worker load.

On the other hand, as shown in FIG. 2, in the related art, after hitting the weld, it was confirmed whether or not tearing and bursting were performed by visually checking the hitted weld by a method of confirming the welding state.

In this case, it was difficult to accurately grasp the welding state when the striking position was not accurate on the welding part. Due to such a problem, if the blow is not smoothly performed while the weld joint is in poor condition, and the plate breakage of the steel plate occurs during line operation, the possibility of the worker being exposed to potential risks increases, as well as the decrease in productivity due to equipment failure. There was a continuing problem.

As a related prior document, there is Korean Utility Model Publication No. 20-1997-0000573 (published on January 21, 1997), and the document describes a welding part inspection device of a coil steel sheet.

It is an object of the present invention to provide an apparatus for automatically detecting a welding part and detecting a welding state, which is designed to automatically determine the deviation of the thickness and steel type of the weld, adjust the pressing force, and accurately apply stress to the weld position, and a method for detecting the same.

An apparatus for checking a weld and automatically detecting a weld state according to an embodiment of the present invention for achieving the above object comprises: an upper die portion having at least one striking member mounted thereon to strike a welded portion of a strip to which a preceding steel plate and a trailing steel plate are welded; A lower die portion disposed at a lower portion spaced apart from the upper die portion and provided with a striking member receiving groove for receiving at least a portion of the striking member; A die fixing support having a lifting rail along a side surface for lifting the upper die part, and fixing the lower die part; A striking force imparting transfer unit for controlling an elevating movement of the upper die moving along the elevating rail so that the striking member strikes the welded portion; A position detection sensor for detecting a position of a welding portion with respect to the strip transferred to a space between the upper and lower die portions; An imaging device for photographing a hitting image of the weld hit by the hitting member; And a control unit for determining the impact force of the striking member according to the steel type and thickness of the preceding and trailing steel sheets, and determining whether or not there is an abnormality in the weld joint state by analyzing the striking image of the welding part captured by the imager. It is characterized.

Here, the upper and lower die portions are arranged in a horizontal direction, and the die fixing support fixes one end of the upper and lower die portions and is arranged in a vertical direction crossing the upper and lower die portions.

The striking member protrudes from a lower surface of the upper die part, and the striking member insertion groove is disposed inside the lower die part in a shape and depth corresponding to the striking member so that the striking member is inserted.

In addition, the control unit controls the hydraulic pressure of the striking force imparting transfer unit in response to the determined striking force.

The position detection sensor may include at least one photo sensor transmitter mounted on a lower surface of the upper die portion; And at least one photo sensor receiver mounted on an upper surface of the lower die part.

In this case, the photo sensor transmitter and the photo sensor receiver are preferably disposed at positions corresponding to each other.

In addition, the apparatus for confirming and automatically detecting a welding state according to an embodiment of the present invention includes: a running rail mounted under a die fixing support and a lower die; And a support traveling unit for controlling traveling of the die fixing support on the traveling rail.

It is preferable that each of the striking force imparting transfer unit and the support traveling unit is a hydraulic cylinder.

In addition, the apparatus for automatically detecting a welding part and welding state according to an embodiment of the present invention includes a pressure sensor for measuring a striking force of the striking member, which is mounted on a striking force imparting transfer unit; A notification lamp mounted on the upper die part and configured to receive an alarm signal from the control unit to identify an abnormality in a welding state; And an imaging device support mounted on at least one side of the upper die part and supporting the imaging device.

In order to achieve the above object, a method for automatically detecting a welding part and automatically detecting a welding state according to an embodiment of the present invention includes an automatic detection device disposed on opposite sides in a symmetrical structure, and then a die mounted on a running rail using a support traveling unit. Aligning the fixed support to a position adjacent to each other by running; Detecting the position of the welded portion with respect to the strip by a position sensor while transferring the strip to which the preceding and following steel plates are welded to the space between the automatic detection devices on both sides; Striking the detected welded portion of the strip using a striking member with a striking force determined according to the steel type and thickness of the preceding and following steel sheets; And determining whether or not there is an abnormality in the state of welding by analyzing the image of the hitting of the welding part taken by the imager by the imager and analyzing the image of the hitting of the welding part by the imager by the hitting member. It is characterized by that.

At this time, when the position detection sensor detects the position of the strip welding part, while the transfer of the strip is stopped, the welding part of the strip is hit by the striking member.

The striking using the striking member is carried out in a manner in which the striking member is inserted into the striking member insertion groove on the lower die by lowering the upper die mounted on the lifting rail by the striking force imparting transfer unit.

Here, the control unit generates an alarm signal by analyzing the hitting image of the welding part photographed by the imaging device to determine the presence or absence of an abnormality in the welding joint state, and then transmits the alarm signal to a notification lamp.

The apparatus for checking welds and automatically detecting the welding state according to the present invention and the detection method thereof are to hit the weld joint by automatically adjusting the pressure through the transfer unit applying the impact force in consideration of the thickness and steel type deviation between the preceding steel plate and the trailing steel plate, and The image of the welding part is photographed through and the photographed image is transmitted to the control unit. Thereafter, it may be possible to check the welding state of the welding part in real time through a notification lamp by comparing and analyzing the existing welding state image and the welding hit image stored in the control unit.

As a result of this, the apparatus for confirming the weld and automatically detecting the welding state according to the present invention, and the detection method thereof, can objectively confirm the presence or absence of an abnormality in the welding state by hitting the weld joint between the preceding and succeeding steel sheets with an accurate and constant force, By removing the occurrence of conventional strip breakage, it is possible to improve worker safety and improve productivity by removing equipment inspection and repair due to equipment failure.

1 is a photograph for explaining a conventional welding method.
Figure 2 is a photograph for explaining a method of confirming a welding state after hitting a conventional welding portion.
3 is a perspective view showing an apparatus for automatically detecting a welding part and checking a welding state according to an embodiment of the present invention.
Figure 4 is an enlarged view showing an enlarged portion A of Figure 3;
5 is a schematic diagram for explaining a method of detecting whether a welding portion is defective after hitting the welding portion.
6 is a plan view showing an enlarged portion B of FIG. 5.
7 is a process flow chart showing a method of automatically detecting a welding part and automatically detecting a welding part according to an embodiment of the present invention.
8 to 11 are process schematic diagrams showing a method of automatically detecting a welding part and automatically detecting a welding part according to an embodiment of the present invention.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only this embodiment is intended to complete the disclosure of the present invention, and the general knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to the possessor, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

Hereinafter, an apparatus for confirming a weld and automatically detecting a welding state according to a preferred embodiment of the present invention and a method for detecting the same will be described in detail with reference to the accompanying drawings.

3 is a perspective view showing an apparatus for automatically detecting a welding part and automatically detecting a welding state according to an embodiment of the present invention, and FIG. 4 is an enlarged view showing an enlarged portion A of FIG. 3. In addition, FIG. 5 is a schematic diagram for explaining a method of detecting whether a welding portion is defective after hitting the welding portion.

3 to 5, the apparatus 100 for checking and automatically detecting a welding state according to an embodiment of the present invention includes an upper die part 110, a lower die part 120, a die fixing support 130, and a striking force. It includes a transfer unit 140, a traveling rail 150, a support traveling unit 160, a position detection sensor 170, an image capture device 175, and a control unit 180.

The upper die part 110 may have a plate shape having an upper surface and a lower surface opposite to the upper surface. The upper die part 110 is equipped with at least one striking member 115 to strike the welded portion of the strip to which the preceding and following steel sheets are welded. Here, the strip may be welded by a butt welding method between the preceding and subsequent steel sheets, or may be welded in a form in which the preceding and subsequent steel sheets overlap each other by an overlap welding method.

In this case, in FIG. 3, it is shown that the three striking members 115 are spaced apart at equal intervals, but this is an example, and it will be a well-known fact that the number and arrangement thereof can be changed in various forms. It is preferable that the striking member 115 is mounted in a form protruding from the lower surface of the upper die part 110. At this time, the striking member 115 may be designed as an integral structure that is cut integrally with the upper die portion 110, or may be designed as a separate structure that is joined by welding, and it is more preferable to be designed as an integral structure. Do.

The lower die part 120 is disposed below the upper die part 110 and spaced apart from the upper die part 110. Like the upper die part 110, the lower die part 120 may have a plate shape having an upper surface and a lower surface opposite to the upper surface.

The lower die part 120 is provided with a striking member receiving groove (H) for accommodating at least a portion of the striking member 115. The striking member insertion groove H is disposed inside the lower die part 120 in a shape and depth corresponding to the striking member 115 so that the striking member 115 is inserted. The depth of the striking member insertion groove (H) is preferably the same as the height of the striking member 115, or formed slightly larger. Accordingly, when striking the welded portion of the strip with the striking member 115 provided in the upper die portion 110, the striking member 115 is inserted into the striking member receiving groove (H). At this time, the welded portion of the strip may also be partially inserted into the striking member receiving groove (H).

Here, the upper die part 110 and the lower die part 120 are arranged in a horizontal direction, respectively. Accordingly, the upper die part 110 and the lower die part 120 may be spaced apart from each other in parallel.

The die fixing support 130 is provided with a lifting rail 135 along a side surface for lifting movement of the upper die part 110. The lower die part 120 is fixed to the die fixing support 130.

At this time, the die fixing support 130 fixes one end of the upper and lower die parts 110 and 120. The die fixing support 130 is arranged in a vertical direction crossing the upper and lower die portions 110 and 120, respectively.

The striking force imparting transfer unit 140 controls the lifting motion of the upper die part 110 moving along the lifting rail 135 so that the striking member 115 strikes the weld. To this end, the striking force imparting transfer unit 140 may be mounted in the form of a cantilever in which one side is connected to the die fixing support 130 and the other side is connected to the upper die part 110. A hydraulic cylinder may be used as the striking force imparting transfer unit 140.

The striking force imparting transfer unit 140 imparts a different striking force according to the steel type and thickness of the preceding steel plate and the trailing steel plate.

That is, as the preceding steel plate and the following steel plate have different thicknesses and steel types, or have the same thickness and high strength steel type, a difference in pressure difference may appear. In order to prevent such a pressure deviation from occurring, in the present invention, the pressure can be automatically adjusted by differently applying the pressing force of the impact force imparting transfer unit 140 for each steel type and thickness between the preceding steel plate and the trailing steel plate.

The running rail 150 is mounted under the die fixing support 130 and the lower die part 120. Although not shown in detail in the drawings, a protruding rail may be provided on the bottom surface of the die fixing support 130 and the lower die part 120, and a rail groove is provided in the running rail 150 at a position corresponding to the protruding rail. Can be.

The support traveling unit 160 is mounted on the traveling rail 150 to control the traveling of the die fixing support 130. To this end, the support traveling unit 160, like the striking force imparting transfer unit 140, may use a hydraulic cylinder. Accordingly, the die fixing support 130 and the upper and lower die portions 110 and 120 fixed to the die fixing support 130 are horizontally reciprocated on the traveling rail 150.

The position detection sensor 170 is mounted to detect the position of the welding part with respect to the strip transferred to the space between the upper die part 110 and the lower die part 120.

The position detection sensor 170 includes at least one photo sensor transmitter 172 mounted on the lower surface of the upper die part 110 and at least one photo sensor receiver 174 mounted on the upper surface of the lower die part 120. ) Can be included. Here, it is preferable that the photo sensor transmitter 172 and the photo sensor receiver 174 are arranged in the same number at positions corresponding to each other.

In FIG. 3, three photo sensor transmitters 172 and three photo sensor receivers 174 are installed as an example. However, it will be a well-known fact that the number and location of the photo sensor transmitters 172 and the photo sensor receivers 174 may be changed in various forms.

The imager 175 is mounted to photograph a hitting image of the weld hit by the hitting member 115. An infrared camera, a CCD camera, or the like may be used as the image capture device 175, but is not limited thereto.

The controller 180 determines the impact force of the striking member 115 according to the steel type and thickness of the preceding and trailing steel sheets, and analyzes the striking image of the welding part captured by the imager 175 to determine whether or not there is an abnormality in the bonding state of the welding part. Equipped to judge. At this time, the controller 180 controls the hydraulic pressure of the striking force imparting transfer unit 140 in response to the determined striking force.

In this way, the control unit 180 receives the pressed point of the welding part after hitting the welding part using the striking member 115 and transmits the image of the weld hit taken through the imager 175, and compares and analyzes the previously stored weld hit data, It is determined whether or not there is an abnormality in the state of the weld joint to the weld.

In addition, the apparatus 100 for checking a welding part and automatically detecting a welding state according to an embodiment of the present invention may further include a pressure sensor 190, a notification lamp 195, and an imager support 176.

The pressure sensor 190 is mounted on the striking force imparting transfer unit 140 and mounted to measure the striking force of the striking member 115. The pressure sensor 190 may be mounted on the side of the striking force imparting transfer unit 140.

The notification lamp 195 is mounted on the upper die part 110 and is mounted to receive an alarm signal from the control unit 180 to identify an abnormality in the welding part bonding state. It is preferable that the notification lamps 195 are mounted in substantially the same number as the number of hitting members 115.

At this time, the notification lamp 195 identifies whether it is good or bad by the lighting color.

For example, three notification lamps 195 may be mounted. In this case, the three notification lamps 195 may be displayed as a green light, a green light, and a green light when 3 RBIs are good, and a green light, a red light, and a green light when 2 RBIs are good and 1 RBI is bad.

The imaging device support 176 is mounted on at least one side of the upper die part 110 and serves to support the imaging device 175.

Meanwhile, FIG. 6 is a plan view showing an enlarged portion B of FIG. 5, and will be described in connection with FIGS. 3 and 5.

As shown in FIGS. 3, 5 and 6, a description will be given of a method of operating the apparatus 100 for checking a welding part and automatically detecting a welding state according to an exemplary embodiment of the present invention.

First, when the strip (S) butt-welded between the preceding steel plate and the following steel plate passes between the upper die part 110 and the lower die part 120, the welding part (W) of the strip (S) by the position detection sensor 170 ) When a position in which the position coincides with the striking member 115 is detected, the strip transfer facility is stopped.

Thereafter, the impact member 115 is stripped at the set pressure by lowering the impact force imparting transfer unit 140 that automatically adjusts the pressure by receiving data on the thickness and steel type of the preceding and following steel sheets by the control unit 180 It hits the weld (W) of (S).

At this time, three position detection sensors 170 may be mounted. In this case, when the operator wants to hit all three striking members 115, three points may be hit with the striking member 115. In addition, it is possible to selectively hit only one hitting member 115 among the three hitting members 115 as needed. In this way, the welding part W of the strip S hit by the hitting member 115 transmits the welding part hitting image captured by the imaging device 175 to the control unit.

For example, the imager 175 may include three imagers, that is, a first imager 175a, a second imager 175b, and a third imager 175c. These three image capture devices 175 may be disposed at positions corresponding to the pressing points of the three welding portions W, respectively.

Thereafter, the control unit 180 receives the pressed point of the welding portion after striking the welding portion W using the striking member 115 and compares the pressed point of the welding portion with the previously stored welding portion hit data after receiving the image of the shot of the welding portion through the imager 175. By analyzing, it is determined whether or not there is an abnormality in the state of the welded joint to the welded part.

Thereafter, the controller 180 transmits an alarm signal to the notification lamp 175, and the operator is able to identify whether or not there is an abnormality in the welding joint state with the welding part W by the lighting color of the notification lamp.

The apparatus for confirming a weld and automatically detecting a welding state according to an embodiment of the present invention described above hits the weld joint by automatically adjusting the pressure through the impact force applying transfer unit in consideration of the difference in thickness and steel type between the preceding steel plate and the trailing steel plate. The image of the welding part is photographed through the camera and the photographed image is transmitted to the control unit. Thereafter, it may be possible to check the welding state of the welding part in real time through a notification lamp by comparing and analyzing the existing welding state image and the welding hit image stored in the control unit.

As a result, the apparatus for checking a weld and automatically detecting a weld state according to an embodiment of the present invention can objectively check the presence or absence of an abnormality in the weld state by hitting the weld joint between the preceding steel plate and the following steel plate with an accurate and constant force. By removing the occurrence of strip breakage that occurred in the strip, it is possible to improve the safety of workers and improve productivity by removing equipment inspection and repair due to equipment failure.

This will be described in more detail through a method for checking a welding part and automatically detecting a welding state according to an embodiment of the present invention.

7 is a process flow chart showing a method of automatically detecting a welding part and automatically detecting a welding state according to an embodiment of the present invention, and FIGS. 8 to 11 are process schematic diagrams illustrating a method of checking a welding part and automatically detecting a welding state according to an embodiment of the present invention. .

As shown in FIG. 7, a method for checking a weld and automatically detecting a weld state according to an embodiment of the present invention includes a position alignment step (S110), a weld position detection step (S120), a weld hitting step (S130), and a weld joint state determination. It includes step S140.

Position alignment

7 and 8, in the position alignment step (S110), the automatic detection device 100 is arranged in a symmetrical structure on both sides facing each other. Here, the automatic detection devices 100 on both sides may be spaced apart from each other at regular intervals.

Next, as shown in Figs. 7 and 9, by using the support traveling unit 160 to drive the die fixing support 130 mounted on the traveling rail 150, the automatic detection devices on both sides are adjacent to each other. Align 100. To this end, it is preferable that the support traveling units 160 on both sides are driven in opposite directions to each other.

Weld position detection

7 and 10, in the welding position detection step (S120), while transferring the strip to which the preceding steel plate and the trailing steel plate are welded to the space between the automatic detection devices 100 on both sides, the position detection sensor 170 It detects the position of the weld with respect to the furnace strip (S).

When the position detection sensor 170 detects the position of the welding part of the strip W, the operation of the strip transfer facility is stopped to stop the transfer of the strip.

Weld hit

Next, in the welding part striking step (S130), the welded part of the detected strip S is hit with the striking force determined by the steel type and thickness of the preceding and following steel sheets using the striking member 115.

In this way, in this step, the welding portion of the strip S is hit with the striking member 115 in a state in which the transfer of the strip S is stopped. The striking member 115 is inserted into the striking member insertion groove H on the lower die part 120 by lowering the upper die part 110 mounted on the elevating rail with a striking force imparting transfer unit for striking using the striking member 115. It will be carried out in a way that says.

At this time, by lowering the transfer unit, which automatically adjusts the pressure by receiving data on the thickness and steel type of the preceding and following steel sheets, the striking member 115 lowers the welded portion of the strip (S) at the set pressure. You will hit.

Weld joint status determination

7 and 11, in the welding joint state determination step (S140), the image of the hitting of the welding portion hit by the hitting member 115 is photographed by the imager 175, and then the imager 175 By analyzing the image of the hitting of the welding part captured by the control unit 180, it is determined whether or not there is an abnormality in the state of the welding joint.

Here, the controller 180 generates an alarm signal by analyzing the hitting image of the welding part captured by the imaging device 175 to determine the presence or absence of an abnormality in the welding joint state, and then sends the alarm signal to the notification lamp 195. Will be transmitted.

That is, the control unit 180 transmits the hitting point of the welding part taken through the imager 175 after hitting the welding part using the hitting member 115, and then comparing and analyzing the previously stored welding part hit data, It is determined whether or not there is an abnormality in the state of the welded joint to the welded part.

Thereafter, the controller 180 transmits an alarm signal to the notification lamp 195, and the operator can identify whether or not there is an abnormality in the welding state of the welding part by the lighting color of the notification lamp 195.

As discussed so far, the method for checking welds and automatically detecting welding conditions according to an embodiment of the present invention automatically adjusts the pressure through the transfer unit for applying a striking force in consideration of the deviation of the thickness and the steel type between the preceding and succeeding steel sheets. After hitting, the image of the weld is captured through an imager, and the captured image is transmitted to the control unit. Thereafter, it may be possible to check the welding state of the welding part in real time through a notification lamp by comparing and analyzing the existing welding state image and the welding hit image stored in the control unit.

As a result, in the method for checking a weld and automatically detecting a weld state according to an embodiment of the present invention, it is possible to objectively check the presence or absence of an abnormality in the weld state by hitting the weld joint between the preceding steel plate and the following steel plate with an accurate and constant force. By removing the occurrence of strip breakage that occurred in the strip, it is possible to improve the safety of workers and improve productivity by removing equipment inspection and repair due to equipment failure.

Although the above has been described based on the embodiments of the present invention, various changes or modifications can be made at the level of a person of ordinary skill in the art to which the present invention pertains. Such changes and modifications can be said to belong to the present invention as long as it does not depart from the scope of the technical idea provided by the present invention. Therefore, the scope of the present invention should be determined by the claims set forth below.

100: automatic detection device 110: upper die portion
115: striking member 120: lower die portion
130: die fixing support 135: elevating rail
140: striking force imparting transfer unit 150: traveling rail
160: support traveling unit 170: position detection sensor
175: video camera 176: video camera support
180: control unit 190: pressure sensor
195: notification lamp H: striking member accommodation groove
S110: Position alignment step
S120: Welding part position detection step
S130: Welding part striking step
S140: welding joint state determination step

Claims (13)

An upper die portion on which at least one striking member is mounted to strike the welded portion of the strip to which the preceding and following steel sheets are welded;
A lower die portion disposed at a lower portion spaced apart from the upper die portion and provided with a striking member receiving groove for receiving at least a portion of the striking member;
A die fixing support having a lifting rail along a side surface for lifting the upper die part, and fixing the lower die part;
A striking force imparting transfer unit for controlling an elevating movement of the upper die moving along the elevating rail so that the striking member strikes the welded portion;
A position detection sensor for detecting a position of a welding portion with respect to the strip transferred to a space between the upper and lower die portions;
An imaging device for photographing a hitting image of the weld hit by the hitting member;
A control unit for determining the impact force of the striking member according to the steel type and thickness of the preceding and trailing steel sheets, and determining whether or not there is an abnormality in the weld joint state by analyzing the striking image of the welding part taken by the imager;
A pressure sensor mounted on the striking force imparting transfer unit to measure the striking force of the striking member;
A notification lamp mounted on the upper die part and configured to receive an alarm signal from the control unit to identify an abnormality in a welding state; And
An imaging device support mounted on at least one side of the upper die part and supporting the imaging device;
Welding part confirmation and welding state automatic detection device comprising a.
The method of claim 1,
The upper die part and the lower die part are arranged in a horizontal direction,
The die fixing support fixes one end of the upper and lower die parts, and a device for checking and automatically detecting a welding state of welds arranged in a vertical direction crossing the upper and lower dies.
The method of claim 1,
The striking member protrudes from the lower surface of the upper die part,
The striking member insertion groove has a shape and depth corresponding to the striking member so that the striking member is inserted into the lower die part.
The method of claim 1,
The control unit
A welding part confirmation and welding state automatic detection device for controlling the hydraulic pressure of the striking force imparting transfer unit in response to the determined striking force.
The method of claim 1,
The position detection sensor
At least one photo sensor transmitter mounted on a lower surface of the upper die part; And
At least one photo sensor receiver mounted on an upper surface of the lower die part;
Welding part confirmation and welding state automatic detection device comprising a.
The method of claim 5,
The photo sensor transmitter and the photo sensor receiver are
A device for checking welds and automatic detection of welding conditions, which are disposed at positions corresponding to each other.
The method of claim 1,
A running rail mounted under the die fixing support and the lower die portion; And
A support traveling unit for controlling traveling of the die fixing support on the traveling rail;
A welding part confirmation and welding state automatic detection device further comprising a.
The method of claim 7,
Each of the striking force imparting transfer unit and the support traveling unit
A device for checking the welding part which is a hydraulic cylinder and automatically detecting the welding condition.
delete Arranging the automatic detection device in a symmetrical structure on both sides facing each other, and then driving the die fixing support mounted on the traveling rail using the support traveling unit and aligning the die fixing support to the adjacent positions;
Detecting the position of the welded portion of the strip with a position sensor while transferring the strip to which the preceding and following steel plates are welded to the space between the automatic detection devices on both sides;
Striking the detected welded portion of the strip with a striking force determined according to the steel type and thickness of the preceding and following steel sheets using a striking member; And
After photographing the image of the striking part of the welding part hit by the striking member with an imager, analyzing the image of the striking part of the welded part captured by the imager with a control unit to determine whether or not there is an abnormality in the state of the welded joint; and
The control unit generates an alarm signal by analyzing the hitting image of the welding part captured by the imaging device to determine whether or not there is an abnormality in the welding joint state, and then transmits the alarm signal to a notification lamp to check the welding part and automatically the welding state. Detection method.
The method of claim 10,
When detecting the position of the strip weld with the position detection sensor,
In a state in which the transfer of the strip is stopped, a method for checking and automatically detecting a welded part hitting the welded part of the strip with a striking member.
The method of claim 10,
Strike using the striking member
Confirmation and welding of the welding part performed by lowering the upper die part mounted on the lifting rail with the striking force imparting transfer unit and inserting the striking member into the striking member insertion groove on the lower die part spaced from the upper die part. Automatic detection method.
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