CN220250945U - Automatic back-firing welding seam recognition device for small assembled workpieces - Google Patents
Automatic back-firing welding seam recognition device for small assembled workpieces Download PDFInfo
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- CN220250945U CN220250945U CN202321855866.1U CN202321855866U CN220250945U CN 220250945 U CN220250945 U CN 220250945U CN 202321855866 U CN202321855866 U CN 202321855866U CN 220250945 U CN220250945 U CN 220250945U
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- 238000003466 welding Methods 0.000 title claims abstract description 42
- 238000010304 firing Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 4
- 238000012790 confirmation Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 3
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Abstract
The utility model provides a welding seam recognition device for automatic back burning of small assembled workpieces, which is suitable for automatic back burning of small assembled workpieces in the ship construction process and belongs to the technical field of manufacturing of ship equipment. The technical proposal is as follows: the welding seam identification mechanism (3) is arranged above the conveying mechanism and spans on the conveying roller way, the welding seam identification mechanism (3) comprises a portal frame (4), a transverse travel mechanism (5) and a two-dimensional line laser measuring instrument (6), the portal frame (4) spans on two sides of the conveying roller way (1), the transverse travel mechanism (5) is arranged on a cross beam of the portal frame (4), the two-dimensional line laser measuring instrument (6) is arranged on the transverse travel mechanism (5), and the two-dimensional line laser measuring instrument (6) transversely travels on the cross beam of the portal frame (4) along with the transverse travel mechanism (5). The utility model is applicable to various rib plates on small assembled workpieces, realizes high-precision weld joint position identification, eliminates manual weld joint position confirmation, and can realize automatic back burning.
Description
Technical Field
The utility model provides a welding seam recognition device for automatic back burning of small assembled workpieces, which is suitable for automatic back burning of small assembled workpieces in the ship construction process and belongs to the technical field of manufacturing of ship equipment.
Background
At present, back firing is a technological measure for heating the reverse side of a welded corner in the ship building process, and the purposes of reducing residual stress generated during welding, correcting angular deformation, preventing ship deformation and facilitating structure installation can be achieved through the technological measure. The back firing has wide range in the whole hull construction, high working strength and high quality requirement, so that the efficiency and precision requirements of shipyards on the back firing process are higher and higher.
The small assemblage is a production management mode of ship manufacture and is a production stage of ship body section assembly. Is a production management method adopted by the modern shipbuilding industry for accelerating shipbuilding speed, improving shipbuilding quality and forming mass production. The simplest hull structural members of the ship are processed at a fixed site. The ship small-assembly workpiece is in a frame structure formed by a bottom plate and a plurality of longitudinal and transverse rib plates, the bottom plate is flat, the structural form is relatively simple, the back burning is carried out in a manual or semi-automatic trolley mode by adopting a workpiece turning mode, and the back burning is completely dependent on operators. Because the front reinforcing ribs and the like are different in height, the bottom plate has inclination angles and shaking after turning over, and certain operation difficulty and construction danger are present.
For this reason, it is proposed to perform back firing without turning over, and some ship building enterprises begin to use this method for carrying out. When the back burning is not performed, the workpiece is conveyed forwards on the roller way, and the back burning mechanism is lower than the conveying roller way of the workpiece. The operator needs to manually or remotely adjust the back burning mechanism according to the position of the welding seam to ensure that the flame heating position is aligned with the welding seam; because the workpiece covers the back burning mechanism, an operator cannot intuitively confirm the superposition degree of the heating position of the back burning mechanism and the welding line position, and the back burning effect is affected. In addition, the height, length and position of the rib plates assembled by the ship are varied, so that the positions of the welding seams are also varied, and an operator needs to continuously rely on experience to adjust.
In order to realize accurate and automatic back burning, the accurate position of the welding seam is required to be transmitted to a back burning mechanism by accurately identifying the welding seam, and the back burning mechanism realizes automatic back burning according to the position data of the welding seam.
Disclosure of Invention
The utility model aims to provide a welding seam recognition device for automatic back burning of small assembled workpieces, which is applicable to various rib plates on the small assembled workpieces, realizes high-precision welding seam position recognition, eliminates manual welding seam position confirmation, can realize automatic back burning and solves the problems in the prior art.
The technical scheme of the device is as follows:
the automatic back burning weld seam recognition device for the small assembled workpieces comprises a conveying roller way and a back burning mechanism, wherein a plurality of conveying roller ways are arranged to form the conveying mechanism, the conveying mechanism is provided with the back burning mechanism, and the small assembled workpieces advance on the conveying roller way and heat the reverse sides of welding corners through the back burning mechanism; the method is characterized in that: the welding seam identification mechanism comprises a portal frame, a transverse mechanism and a two-dimensional line laser measuring instrument, wherein the portal frame spans on two sides of the conveying roller way, the transverse mechanism is arranged on a beam of the portal frame, the two-dimensional line laser measuring instrument is arranged on the transverse mechanism, and the two-dimensional line laser measuring instrument transversely walks on the beam of the portal frame along with the transverse mechanism.
Further, the two-dimensional line laser measuring instrument identifies the top of the small assembled workpiece, and the position of the welding line is obtained through calculation by identifying the position of the rib plate.
Further, the transverse mechanism reciprocates (Y direction) on a beam of the portal frame, the two-dimensional line laser measuring instrument adopts a laser triangulation method to measure the positions (X direction and Z direction) of rib plates at the top of the small assembled workpiece in a non-contact manner, the two-dimensional line laser measuring instrument is arranged on the transverse mechanism, the installation direction requires that the measured horizontal direction is perpendicular to the walking direction of the transverse mechanism, and the two-dimensional line laser measuring instrument moves rapidly along with the transverse mechanism.
The X-direction, Y-direction and Z-direction data and the conveying speed (measured in the prior art) of the small assembled workpiece in the operation process are recorded through the existing control system, the positions of rib plates of the small assembled workpiece are obtained based on the data, the positions of welding seams of the rib plates are obtained according to the positions (thicknesses) of the rib plates, and the welding seam position data are sent to the existing control system, so that automatic back burning of the small assembled workpiece is realized.
The roller conveyor, the back firing mechanism, the traversing mechanism, the two-dimensional line laser measuring instrument and the control system are all well known and commonly used in the field.
The utility model has the positive effects that: 1. the compatibility range is wide, and the device is applicable to various rib plates on small assembled workpieces; 2. the speed of the traversing mechanism can be adjusted according to the complexity of the workpiece, so that high-precision weld position identification is realized; 3. the device is arranged in front of the back firing mechanism, so that continuous detection operation can be realized; 5. the manual weld position confirmation is eliminated, and automatic back burning can be realized;
drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a front view of a weld seam identification apparatus of the present utility model;
FIG. 3 is a side view of the weld identification apparatus of the present utility model;
FIG. 4 is a diagram showing the correspondence between the motion direction and the coordinate system according to the present utility model;
FIG. 5 is a horizontal measurement direction (X-direction) of the two-dimensional line laser measuring instrument of the present utility model;
FIG. 6 shows the measurement range of the two-dimensional line laser measuring instrument driven by the traversing mechanism in the Y direction;
in the figure: the device comprises a conveying roller way 1, a back firing mechanism 2, a welding seam recognition mechanism 3, a portal frame 4, a traversing mechanism 5 and a two-dimensional line laser measuring instrument 6; the two-dimensional line laser measuring instrument measures the laser line and the measuring range 7 emitted to the workpiece, the X direction 8 (small-assembly workpiece conveying direction), the Y direction 9 (transverse moving direction), and the Z direction 10 (vertical direction to the ground).
Detailed Description
The device is further described by way of example with reference to the accompanying drawings.
The automatic back burning welding seam recognition device for the small assembled workpieces comprises a conveying roller way 1 and a back burning mechanism 2, wherein a plurality of conveying roller ways are arranged to form the conveying mechanism, the conveying mechanism is provided with the back burning mechanism 2, and the small assembled workpieces advance on the conveying roller way 1 and heat the reverse side of a welding angle through the back burning mechanism 2; the method is characterized in that: the welding seam identification mechanism 3 is arranged above the conveying mechanism and spans on the conveying roller way, the welding seam identification mechanism 3 comprises a portal frame 4, a transverse mechanism 5 and a two-dimensional line laser measuring instrument 6, the portal frame 4 spans on two sides of the conveying roller way 1, the transverse mechanism 5 is arranged on a beam of the portal frame 4, the two-dimensional line laser measuring instrument 6 is arranged on the transverse mechanism 5, and the two-dimensional line laser measuring instrument 6 transversely walks on the beam of the portal frame 4 along with the transverse mechanism 5.
And the two-dimensional line laser measuring instrument 6 identifies the top of the small-set workpiece, and calculates the position of the welding line by identifying the position of the rib plate.
The transverse mechanism 5 reciprocates (Y direction) on a beam of the portal frame, the two-dimensional line laser measuring instrument 6 adopts a laser triangulation method to measure the positions (X direction and Z direction) of rib plates at the top of small assembled workpieces in a non-contact mode, the two-dimensional line laser measuring instrument 6 is arranged on the transverse mechanism 5, the installation direction requires that the horizontal direction of measurement is perpendicular to the walking direction of the transverse mechanism, and the two-dimensional line laser measuring instrument moves rapidly along with the transverse mechanism.
The X-direction, Y-direction and Z-direction data and the conveying speed (measured in the prior art) of the small assembled workpiece in the operation process are recorded through the existing control system, the positions of rib plates of the small assembled workpiece are obtained based on the data, the positions of welding seams of the rib plates are obtained according to the positions (thicknesses) of the rib plates, and the welding seam position data are sent to the existing control system, so that automatic back burning of the small assembled workpiece is realized.
In an embodiment, the weld seam identification mechanism 3 spans over the rollgang 1. The small assembled workpieces are conveyed forwards on a conveying roller way 1, firstly measured by a welding seam recognition mechanism 3 during conveying, and then conveyed to a back burning mechanism 2 to finish back burning.
The distance between the installation position of the welding seam recognition mechanism 3 and the X direction of the back burning mechanism 2 depends on the measuring range of the X direction 8 of the two-dimensional line laser measuring instrument 6, and is 1.5-3 times of the measuring range. For example, the measurement range of the X-direction 8 of the two-dimensional line laser measuring instrument 6 is 700MM, and the distance between the installation position of the welding seam recognition mechanism 3 and the X-direction of the back burning mechanism 2 is 1050MM-2100 MM.
The installation position of the welding seam recognition mechanism 3 is separated from the Z direction 10 of the conveying roller way 1, and the installation height of the welding seam recognition mechanism 3 is separated from the Z direction 10 of the upper surface of the conveying roller way 1 by 900MM because the height range of the conventional small assembled workpiece of the ship is smaller than 600 MM.
The transverse mechanism 5 is arranged on a walking guide rail on a beam of the portal frame 4, can perform quick reciprocating motion in the Y direction 9, and the motion range covers all small assembled workpieces on the conveying roller way 1. The movement speed is adjustable in the range of 8-64M/Min, and when a small assembled workpiece is complex, one group of measurement data of 0.25MM can be realized by reducing the speed in order to acquire more groups of data through the two-dimensional line laser measuring instrument 6. Conversely, a 1MM set of measurement data can be implemented at an increased speed.
The measurement dimension of the two-dimensional line laser measuring instrument 6 includes two-dimensional data in a horizontal direction (X direction) and a vertical direction (Z direction), which are mounted on the traverse mechanism 5 with the X direction thereof being perpendicular to the traveling Y direction of the traverse mechanism.
The data collected by the prior art control system comprises X-direction data generated by the two-dimensional line laser measuring instrument 6, Z-direction data generated by the two-dimensional line laser measuring instrument 6 and Y-direction data of the position of the traversing mechanism 5, and the conveying speed of the conveying roller way 1 allows the collection frequency to be adjusted according to the actual condition of a workpiece.
When the equipment is started, the small assembled workpiece is conveyed forwards on the conveying roller way 3, and meanwhile, the traversing mechanism 5 of the welding seam recognition mechanism 3 carries the two-dimensional line laser measuring instrument 6 to move in a quick reciprocating mode in a measuring range.
The control system of the prior art performs data acquisition according to fixed acquisition frequency, judges the size and shape of the rib plate to obtain the position of a welding line, obtains the position and shape data of the rib plate, analyzes the position of the welding line at the rib plate and the bottom plate, transmits the analyzed data to the back burning mechanism 2, and performs back burning according to given data.
In the process of weld joint identification and back firing, small assembled workpieces can continuously run without stagnation.
Claims (3)
1. The automatic back burning welding seam recognition device for the small assembled workpieces comprises a conveying roller way (1) and a back burning mechanism (2), wherein a plurality of conveying roller ways are arranged to form the conveying mechanism, the conveying mechanism is provided with the back burning mechanism (2), and the small assembled workpieces advance on the conveying roller way (1) and heat the reverse sides of welding corners through the back burning mechanism (2); the method is characterized in that: the welding seam identification mechanism (3) is arranged above the conveying mechanism and spans on the conveying roller way, the welding seam identification mechanism (3) comprises a portal frame (4), a transverse travel mechanism (5) and a two-dimensional line laser measuring instrument (6), the portal frame (4) spans on two sides of the conveying roller way (1), the transverse travel mechanism (5) is arranged on a cross beam of the portal frame (4), the two-dimensional line laser measuring instrument (6) is arranged on the transverse travel mechanism (5), and the two-dimensional line laser measuring instrument (6) transversely travels on the cross beam of the portal frame (4) along with the transverse travel mechanism (5).
2. The automatic back firing weld joint recognition device for small assembled workpieces according to claim 1, wherein: the two-dimensional line laser measuring instrument (6) identifies from the top of the small assembled workpiece.
3. An automatic back firing weld seam identification device for small assembled workpieces according to claim 1 or 2, characterized in that: the two-dimensional line laser measuring instrument (6) is arranged on the transverse traveling mechanism (5), and the installation direction requires that the horizontal direction of the two-dimensional line laser measuring instrument is perpendicular to the traveling direction of the transverse traveling mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321855866.1U CN220250945U (en) | 2023-07-14 | 2023-07-14 | Automatic back-firing welding seam recognition device for small assembled workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321855866.1U CN220250945U (en) | 2023-07-14 | 2023-07-14 | Automatic back-firing welding seam recognition device for small assembled workpieces |
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| Publication Number | Publication Date |
|---|---|
| CN220250945U true CN220250945U (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321855866.1U Active CN220250945U (en) | 2023-07-14 | 2023-07-14 | Automatic back-firing welding seam recognition device for small assembled workpieces |
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| Country | Link |
|---|---|
| CN (1) | CN220250945U (en) |
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2023
- 2023-07-14 CN CN202321855866.1U patent/CN220250945U/en active Active
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